WO2015180183A1

WO2015180183A1 - Rotating-shaft mobile telephone protective case with keyboard

Info

Publication number: WO2015180183A1
Application number: PCT/CN2014/079015
Authority: WO
Inventors: 袁建平
Original assignee: 袁建平
Priority date: 2014-05-27
Filing date: 2014-05-30
Publication date: 2015-12-03
Also published as: WO2015180279A1; CN204206237U

Abstract

A rotating-shaft mobile telephone protective case with keyboard, comprising a mobile telephone back case, a mobile telephone placement groove (1) being formed on the bottom surface of the mobile telephone back case; a keyboard input device; and also provided with a rotating shaft (2), arranged near to one side of the keyboard input device and being fixedly connected to the keyboard input device; and a clamping sleeve apparatus, being fixedly connected to one side of the mobile telephone placement groove (1); the rotating shaft (2) is suitable for nesting tightly within the clamping sleeve apparatus, and rotates axially relative to the clamping sleeve apparatus. The present mobile telephone protective case integrally connects the mobile telephone placement groove and the keyboard input device, and is convenient to carry; the mobile telephone placement groove can be parked at a certain angle relative to the keyboard input device, such that the keyboard can still be easily operated without a flat resting place, and the demands of different viewing angles can be met by means of freely adapting the angle of the mobile telephone screen.

Description

Rotary type mobile phone protection case with keyboard

TECHNICAL FIELD The present invention relates to the field of electronic accessories, and in particular to a rotary shaft type mobile phone protection case. BACKGROUND OF THE INVENTION Smartphones are easy to use because of their versatility, which brings great convenience to people's work and life. Smartphones usually have a built-in software keyboard. Compared to traditional physical keyboards, the use of software keyboards increases the utilization of the body area and saves a lot of space for setting up the phone screen. However, the built-in software keyboard of this mobile phone has the drawback that the input speed is usually low when people touch the screen by hand. Especially with the powerful function of the smart phone, when the large text editing function such as word document is performed, the input mode of the software keyboard brings great inconvenience. In order to solve the problem of inconvenient operation of the software keyboard, those skilled in the art have developed an additional keyboard for text input. For example, Chinese patent document CN203414881U discloses an input device that can be connected to a tablet or a mobile phone through a flexible hinge. The input device is provided with a pressure sensitive keyboard, and the pressure sensitive key on the keyboard comprises a flexible contact layer (such as a polyester film). And a sensor substrate disposed under the flexible spacer layer, a force sensitive ink is disposed on a side of the flexible contact layer facing the sensor, and the flexible contact layer and the sensor substrate are separated by a spacer. The flexible contact layer does not contact the sensor substrate when the flexible contact layer is not subjected to external pressure; and the sensor substrate is in contact with the force sensitive ink of the flexible contact layer when the operator performs a button operation. Form an analog signal. The input device in the above technology needs to be connected to the mobile phone through a flexible hinge. In addition, in order to further improve the portability of the device, the additional keyboard in the prior art can also be directly disposed on the mobile phone mobile phone slot, such as a Chinese patent. Document CN201985971U discloses a mobile phone holster with a Bluetooth button, the mobile phone holster includes upper and lower flaps connected to the opening and closing; the upper flap is provided with an embedded fitting embedded with the mobile phone, on the lower flap, from the top The Bluetooth keypad and the circuit board are installed layer by layer. The circuit board is integrated with a Bluetooth communication circuit chip, a keyboard circuit, a built-in antenna and a power supply circuit. The buttons in this document are directly placed on the holster of the mobile phone, which can provide certain protection functions for the mobile phone, and can improve the speed and efficiency of command input to a certain extent. The above input device of the prior art improves the operability and portability of the mobile phone keyboard to a certain extent, but the disadvantage of the mobile phone screen and the keyboard can only be placed on the plane and cannot be fixed within a certain angle range. When the mobile phone is placed on the plane, the operation is not convenient, and the practicality of the portable keyboard structure of the mobile phone is not very high. Therefore, how to provide a mobile phone input device that conforms to people's operating habits and is easy to operate is a problem that has not been solved in the prior art. SUMMARY OF THE INVENTION The present invention solves the problem that the additional keyboard of the prior art has poor operability and is not convenient for quick input, thereby providing an easy-to-operate rotary shaft type mobile phone protection case with a keyboard. The technical solution for solving the above technical problem is: a hinged mobile phone protection casing with a keyboard, comprising: a mobile phone back shell, a mobile phone slot is formed on a bottom surface of the mobile phone back shell; a rotating shaft, disposed adjacent to a side of the keyboard input device, and fixedly connected to the keyboard input device; the ferrule device, the ferrule device is fixedly connected to one side of the mobile phone slot; the rotating shaft It is suitable for the expansion to be nested within the ferrule device and to rotate relative to the ferrule device in the axial direction. The ferrule device includes: two connecting members, the two connecting members are connected to one side of the mobile phone receiving slot, and the finite position grooves are respectively disposed on opposite sides of the two connecting members; The rotating shaft includes: a fixing rod fixedly connected to one side of the keyboard input device; two connecting rods respectively connected to both sides of the fixing rod and the fixing rod The two connecting rods are respectively nested in the two limiting grooves; the diameter of the connecting rod is smaller than the diameter of the fixing rod, and the two connecting rods are made of an elastic material. The two connecting rods are made of one or a mixture of two of PC plastic, ABS plastic. The two connecting members are respectively connected to two corners of one side of the mobile phone receiving slot, wherein each of the connecting members comprises: a transition surface disposed perpendicular to the bottom surface, the transition surface being disposed along the mobile phone The sidewall of the groove is extended to form a curved surface; the limiting surface is disposed in connection with the transition surface, and is perpendicular to the bottom surface and parallel to the sidewall of the mobile phone slot, the limiting groove is disposed at a cover plate disposed between the transition surface and the limiting surface and parallel to the bottom surface, wherein the cover plate is connected to the side of the transition surface and the limiting surface away from the bottom surface a fastening groove is disposed through the cover plate and the limiting surface, the fastening groove is disposed in communication with the limiting groove, and an opening width of the fastening groove is connected to the limiting groove Less than the width of the limiting groove. The distance between the connecting rod and the keyboard input device is greater than the large distance between the limiting groove and the cover plate by 0-lmm. On each of the connecting rods, a letter groove is provided along the diameter direction of the connecting rod. The keyboard input device includes a soft keyboard, a pot chip, a circuit board and a bottom plate which are sequentially disposed from top to bottom, wherein a Bluetooth module and a charging circuit are disposed on the circuit board; One side of the bottom plate is integrally formed with the bottom plate. Bumps having a height of 0.5 to 0.8 mm are formed under the keys of the flexible keyboard and at the center of the buttons. The keyboard input device is further provided with: a flexible connecting layer, which is pasted between the soft keyboard and the pot piece, and is disposed at a position corresponding to each of the bumps to be suitable for the passage of the bump hole. Elastic protrusions are respectively disposed on opposite sides of the two connecting members and on the outer periphery of the limiting groove; elastic locking members are respectively disposed on two side surfaces of the fixing rod, and the elastic protrusions are respectively disposed Suitable for The rotating shaft type mobile phone protection cover with a keyboard according to the present invention is fastened in the limiting groove of the back cover of the mobile phone through the rotating shaft of the keyboard input device, and not only connects the mobile phone placement slot with the keyboard input device. One-piece, easy to carry, and allows the phone to be placed in a certain angle with respect to the keyboard input device, so that people can easily and conveniently operate the keyboard without a flat shelf. By adjusting the angle of the screen of the mobile phone on the resting plane, the requirements of different viewing angles are further satisfied, and the operation is more convenient. The utility model relates to a rotary shaft type mobile phone protection case with a keyboard, wherein the keyboard input device comprises a soft keyboard, a pot piece, a circuit board and a bottom plate which are sequentially arranged from top to bottom; the utility model is in the soft A bump is formed under the button of the sex keyboard and located at a center of the button. When the keyboard is used, the operator presses the button, and the bump on the button presses the metal dome on the cup. , thereby turning on the circuit and realizing the input of information. In this process, the bumps cooperate with the pot piece to realize the input mode of the elastic keyboard, compared with the pressure sensitive keyboard or the rigid contact key board in the prior art, in the utility model The input method is more easily received by an operator who uses the computer for a long time, thereby effectively increasing the input speed. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the content of the present invention easier to understand, the present invention will be further described in detail below with reference to the accompanying drawings. 1 is a structural view showing a state in which a mobile phone storage slot and a keyboard input device of the mobile phone protective cover of the present invention are opened; FIG. 2 is a structural view of a closed state of the mobile phone protective cover of the present invention; FIG. 4 is a structural view of a specific layered structure of the protective cover of the mobile phone of the present invention; FIG. 5 is a cross-sectional view of the back cover of the mobile phone provided with a groove according to the present invention; Figure 6 is a structural view of the keyboard input device of the present invention in which the rotating shaft is a cylindrical rod; FIG. 7 is a structural diagram of a keyboard input device provided with an elastic locking member according to the present invention; FIG. 8 is a structural view of a mobile phone back shell provided with an elastic protrusion according to the present invention; Wherein, the reference numerals are:

1-Mobile phone slot; 11-slot edge; 12-stop groove; 13-fastening groove; 14-transition surface; 15-limit surface; 16-cover; 17-round groove; 18-ladder groove.

2-rotating shaft; 21-connecting rod; 22-fixing rod;

3-soft keyboard; 4-pot slice; 5-circuit board; 6-base plate; 7-decorative bottom plate; 9-elastic lock member; 91-first elastic lock bar; 92-second elastic lock bar; Elastic bumps. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 The hinged mobile phone protection cover with a keyboard according to the embodiment is shown in FIG. 1 , and includes a mobile phone back shell and a keyboard input device, and a mobile phone is formed on the bottom surface of the mobile phone back shell. Slot 1. As an alternative embodiment, the size of the mobile phone slot 1 can be the same as the size of the battery cover of the mobile phone, and the battery cover of the mobile phone can be removed and installed in the mobile phone slot 1 during use; The inner size of the slot 1 is set to match the size of the outer casing of the mobile phone, and the mobile phone is placed directly in the mobile phone slot 1 . In the embodiment, the thickness of the groove edge 11 of the mobile phone receiving slot 1 is suitably 0.5 mm to 1.5 mm. Two connecting members are further connected to one side of the mobile phone receiving slot 1 . As a preferred embodiment, the two connecting members are respectively connected to two corners of one side of the mobile phone receiving slot 1 in the embodiment. As shown in FIG. 2, each of the connecting members includes: a transition surface 14 disposed perpendicular to the bottom surface, wherein the transition surface 14 is a curved surface formed along a sidewall of the mobile phone slot 1; The positioning surface 15 is disposed on the limiting surface 15 , and is disposed parallel to the bottom surface and parallel to the sidewall of the mobile phone receiving slot 1 . The limiting recess 12 is disposed on the limiting surface 15 . ; a cover plate 16 is disposed between the transition surface 14 and the limiting surface 15 and parallel to the bottom surface, and the cover plate 16 is connected to the side of the transition surface 14 and the limiting surface 15 away from the bottom surface. A fastening groove 13 is disposed through the cover plate 16 and the limiting surface 15 , and the fastening groove 13 is disposed in communication with the limiting groove 12 , the fastening groove 13 and the limiting groove The opening width of the 12 joint is smaller than the width of the limiting groove 12. As an alternative embodiment, the connecting member in the embodiment may be disposed as two parallel wall surfaces respectively connected to one side of the mobile phone receiving slot 1 , and a limiting recess is respectively disposed on the two wall surfaces. The slot 12 is sufficient. The hinged mobile phone protection case with a keyboard according to the embodiment is fixedly connected with the keyboard input device, and is provided with a rotating shaft 2, and the rotating shaft 2 is disposed near one side of the keyboard input device, this embodiment The rotating shaft 2 includes a fixing rod 22 and two connecting rods 21, wherein the fixing rod 22 is fixedly connected to one side of the keyboard input device, and the two connecting rods 21 and the fixing rod 22 respectively The two sides are connected and coaxial with the fixing rod 22, and the two connecting rods 21 are respectively nested in the two limiting grooves 12, and are adapted to be opposite to the connecting member in the axial direction. Rotation; the diameter of the connecting rod 21 is smaller than the diameter of the fixing rod 22. In the embodiment, the two connecting rods 21 are made of an elastic material. As an alternative embodiment, the two connecting rods 21 can be made of one or a mixture of two of PC plastic and ABS plastic. In order to further improve the expansion effect between the connecting rod 21 and the limiting groove 12, a groove is provided on each of the connecting rods 21 along the diameter direction of the connecting rod 21. In the embodiment, the connecting rod 21 is nested in the limiting groove 12 by using the elastic property of the material in the embodiment, and is suitable for the connection with the connecting rod 21 in the embodiment. The rod 21 is relatively rotated. As an alternative embodiment, the limiting groove 12 can be disposed as a circular groove having a diameter slightly smaller than the diameter of the connecting rod 21, and the diameter of the limiting groove 12 in this embodiment. It is smaller than the diameter of the connecting rod 21 by 0.1 mm; at the same time, the opening width of the fastening groove 13 is smaller than the diameter of the connecting rod 21 by 0.2-0.7 mm. In the use, the connecting rod 21 can be slid into the limiting groove 12 through the fastening groove 13 . In order to prevent the connecting rod 21 from falling off from the fastening groove 13 again, the embodiment defines the fastening. The opening width at the junction of the groove 13 and the limiting groove 12 is smaller than the width of the limiting groove 12. In order to facilitate the closing of the mobile phone back shell and the keyboard input device (as shown in FIG. 3 ), the distance between the connecting rod 21 and the keyboard input device is longer than the limiting recess 12 and the cover. Board 16 The distance between them is 0-lmm, that is, the distance between the connecting rod 21 and the keyboard input device and the distance between the limiting groove 12 and the cover plate 16 are equal (0 mm); or The distance between the connecting rod 21 and the keyboard input device is greater than the distance between the limiting groove 12 and the cover plate 16 by more than 1 mm. As a preferred embodiment, the length of the connecting rod 21 in the embodiment may be set to be 1 mm to 5 mm, so that the rotating shaft 2 is not easy to slide out from the limiting groove 12, and material is saved, and the cost is reduced. The keyboard input device in the embodiment includes a soft keyboard 3, a pan 4, a circuit board 5, and a bottom plate 6 which are sequentially disposed from top to bottom, wherein the soft keyboard 3 is as shown in FIG. The soft keyboard 3 is injection molded using a TPU or PU material of moderate hardness. This embodiment is preferably a PU material having a Shore hardness of 90 degrees. National characters and characters can be printed on the keys of the keyboard, and a bump is disposed under the button and at the center of the button, and the height of the bump is 0.8 mm. As a preferred embodiment, the height of the bumps may be set between 0.5 and 0.8 mm. The circuit board 5 is provided with five rows of 38~43 word key points. It includes a radio Bluetooth module and a charging circuit, as well as a rechargeable battery and a charging interface. These components are preferably mounted on the top and bottom of the circuit board 5. The upper surface of the circuit board 5 is kept flat to fit the pan 5 . As an alternative embodiment, under the circuit board 5, a bottom plate 6 is provided in connection with the circuit board 5. A micro switch can also be disposed on the circuit board 5. In an optional implementation manner, the keyboard input device further includes a flexible connecting layer disposed on a lower surface of the flexible keyboard 3 and an upper surface of the dome 4, wherein the flexible connecting layer corresponds to each The positions of the bumps are provided with through holes suitable for the bumps to pass through. The through hole preferably coincides with the size of the button. Also as an alternative embodiment, this embodiment is also provided with a decorative bottom plate 7. In the embodiment, the fixing rod 22 is fixedly disposed on the bottom surface of the keyboard input device, thereby achieving a fixed connection with the keyboard input device. In the embodiment, the hinged mobile phone protection case with a keyboard is used, and the mobile phone placement slot 1 utilizes the frictional force between the connecting rod 21 and the limiting groove 12 to open a certain angle with respect to the keyboard input device. Parked after the stop. Generally, the rotation axis 2 is rotated until the mobile phone placement slot 1 and the back of the keyboard input device are in contact with each other. As an alternative embodiment, the mobile phone protection casing described in this embodiment may also be provided with a locking device, as shown in FIG. 7 and FIG. The preferred locking device in the example is: on opposite sides of the two connecting members and in the limiting groove

Elastic protrusions 10 are respectively disposed on the outer periphery of the fixing rods 10; elastic locking members 9 are respectively disposed on the side surfaces of the fixing rods, and the elastic protrusions 10 are adapted to be rotated to the elastic locking members 9 and The elastic locking member abuts the connection. The elastic locking member is fixedly connected to the connecting rod 21 and the fixing rod 22, and the elastic locking rod is fixedly connected with each of the connecting rods, and two elastic locking rods are respectively provided for the first elasticity. a locking lever 91 and a second elastic locking lever 92; wherein the first elastic locking lever 91 is adapted to be in abutting connection with the elastic protrusion 10 when the mobile phone back shell and the keyboard input device are in a closed state; The second elastic locking lever 92 is adapted to be in abutting connection with the elastic protrusion 10 when the mobile phone back shell and the keyboard input device are in the maximum open state; the elastic locking member 9 and the elastic protrusion 10 are also preferably by the PC. A combination of one or a combination of plastic and ABS plastic, the friction between the back cover of the mobile phone and the keyboard input device is further increased when the two are connected, thereby forming a lock. The method for attaching the hinged mobile phone protection case with a keyboard described in this embodiment is:

(1) The flexible connecting layer is pasted on the lower surface of the flexible keyboard 3, and then pasted on the upper surface of the pot piece 4, and the circuit board 5 is sequentially pasted under the pot piece 4. Then, the soft keyboard 3, the pot piece 4 and the circuit board 5 which are affixed together are placed in the grooves of the bottom plate 6;

(2) The bottom plate 7 is pasted on the bottom of the bottom plate 6. On the outer periphery of the flexible bottom layer 8 which is more than 1 mm of the bottom plate 6, the high-frequency machine is used to bond the crimping edges. At the time of crimping, the mini USB port and the T switch port are respectively left at both ends of the circuit protection backplane 6, and the mini USB is used for dry charging and the T switch is used for switching the keyboard power.

(3) The mobile phone receiving slot 1 and the keyboard input device are installed in a relatively closed state, and the two connecting rods 21 of the rotating shaft 2 integrally formed with the bottom plate 6 are fastened to the limiting recess 12 through the fastening groove 13 Inside. It should be noted that the "side surface of the mobile phone receiving slot 1" described in the present invention refers to a surface located on both sides of the slot side 11 connected to the two connecting members. Example 2 The hinged mobile phone protection case with a keyboard according to the embodiment includes a mobile phone back case and a keyboard input device, and a mobile phone placement slot 1 is formed on a bottom surface of the mobile phone back case. In the embodiment, the thickness of the groove edge 11 of the mobile phone receiving slot 1 is suitably 0.5 mm to 1.5 mm. The card protection device of the embodiment is provided with a ferrule device. As shown in FIG. 5, the ferrule device is fixedly connected to one side of the mobile phone slot 1; The groove is also formed on the bottom surface, and the opening of the groove is elongated and the opening direction is consistent with the opening direction of the mobile phone slot; The groove includes a circular groove 17 having a circular cross section and a trapezoidal groove 18 having a trapezoidal cross section. The circular groove 17 and the trapezoidal groove 18 have the same length, and the trapezoidal groove 18 is disposed in the circle. The outer side of the groove 17 is provided in communication with the circular groove 17, and the opening width at the junction of the trapezoidal groove 18 and the circular groove 17 is smaller than the diameter of the circular groove 17. The hinged mobile phone protection case with a keyboard according to the embodiment is fixedly connected with the keyboard input device and provided with a rotating shaft 2, as shown in FIG. 6, the rotating shaft 2 is close to one of the keyboard input devices. In the embodiment, the rotating shaft 2 is a cylindrical rod of constant diameter, the length of the rotating shaft 2 is the same as the length of the groove, and the rotating shaft 2 is suitable for nesting in the The circular groove 17 is rotated relative to the ferrule device in the axial direction. In this embodiment, the rotating shaft 2 is made of an elastic material, and the rotating shaft 2 is in an expanded state in the circular groove 17. In the embodiment, the diameter of the circular groove 17 is larger than the rotating shaft. The diameter of 2 is 0.1 mm. As an alternative embodiment, the rotating shaft 2 may be made of one or a mixture of two kinds of PC plastic and ABS plastic, and the hinged mobile phone protective cover with a keyboard described in the embodiment, The mobile phone placement slot 1 utilizes the principle of friction between the rotating shaft 2 and the recess of the ferrule device such that it can be parked at a certain angle with respect to the keyboard input device. Generally, the rotation axis 2 is rotated until the mobile phone placement slot 1 and the back of the keyboard input device are in contact with each other. The keyboard input device in the embodiment includes a soft keyboard 3, a pan 4, a circuit board 5, and a bottom plate 6 which are sequentially disposed from top to bottom, wherein the soft keyboard 3 is as shown in FIG. The soft keyboard 3 is injection molded using a TPU or PU material of moderate hardness. This embodiment is preferably a PU material having a Shore hardness of 90 degrees. National characters and characters can be printed on the keys of the keyboard, and each of the keys is below A bump is disposed at a center of the button, and the height of the bump is 0.8 mm. As a preferred embodiment, the height of the bumps may be set between 0.5 and 0.8 mm. The circuit board 5 is provided with five rows of 38~43 word key points. It includes a radio Bluetooth module and a charging circuit, as well as a rechargeable battery and a charging interface. These components are preferably mounted on the top and bottom of the circuit board 5. The upper surface of the circuit board 5 is kept flat to fit the pan 5 . As an alternative embodiment, under the circuit board 5, a bottom plate 6 is provided in connection with the circuit board 5. A micro switch can also be disposed on the circuit board 5. In an optional implementation manner, the keyboard input device further includes a flexible connecting layer disposed on a lower surface of the flexible keyboard 3 and an upper surface of the dome 4, wherein the flexible connecting layer corresponds to each The positions of the bumps are provided with through holes suitable for the bumps to pass through. The through hole preferably coincides with the size of the button. Also as an alternative embodiment, this embodiment is also provided with a decorative bottom plate 7. In this embodiment, the rotating shaft 2 is fixedly disposed on the bottom surface of the keyboard input device, thereby achieving a fixed connection with the keyboard input device. It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. The obvious changes or variations derived therefrom are still within the scope of protection created by the present invention.

Claims

Claim U

A hinged mobile phone protection case with a keyboard, comprising: a back cover of a mobile phone, a mobile phone slot (1) formed on a bottom surface of the back cover of the mobile phone; a keyboard input device; a rotating shaft (2) disposed adjacent to a side of the keyboard input device and fixedly connected to the keyboard input device; a ferrule device, the ferrule device being fixedly connected to one side of the mobile phone receiving slot (1) The rotating shaft (2) is adapted to be nested within the ferrule device and is relatively rotatable relative to the ferrule device in the axial direction.

2. The rotary shaft type mobile phone protection case with a keyboard according to claim 1, wherein the ferrule device comprises: two connecting members, the two connecting members and the mobile phone placement slot ( 1) one side of the connection arrangement, a limited groove (12) is respectively disposed on opposite sides of the two connecting members; the rotating shaft (2) comprises: a fixing rod (22), the fixing rod (22) Fixedly connected to one side of the keyboard input device; two connecting rods (21) respectively connected to both sides of the fixing rod (22) and with the fixing rod (22) Coaxially disposed, the two connecting rods (21) are respectively nested in the two limiting grooves (12); the diameter of the connecting rod (21) is smaller than the diameter of the fixing rod (22) The two connecting rods (21) are made of an elastic material.

3. The rotary shaft type 2 mobile phone protective case with a keyboard according to claim 2, wherein the two connecting rods (21) are made of a mixture of one or two of PC plastic and ABS plastic. to make.

The rotary shaft type 2 mobile phone protection case with a keyboard according to claim 2 or 3, wherein the two connecting members are respectively connected to two corners of one side of the mobile phone receiving slot, wherein each The connectors include: a transition surface (14) disposed perpendicular to the bottom surface, the transition surface (14) being a curved surface extending along a sidewall of the mobile phone slot; a limiting surface (15), and the transition surface (14) The connection arrangement is perpendicular to the bottom surface and parallel to the sidewall of the mobile phone slot, the limiting recess (12) is disposed on the limiting surface (15); the cover (16) Located between the transition surface (14) and the limiting surface (15) and parallel to the bottom surface, the cover plate (16) is away from the transition surface (14) and the limiting surface (15) The side of the bottom surface is connected to the cover plate (16) and the limiting surface (15) is provided with a fastening groove (13), the fastening groove (13) and the limiting groove (12) The communication setting is that the opening width of the connection between the fastening groove (13) and the limiting groove (12) is smaller than the width of the limiting groove (12).

The rotary shaft type mobile phone protection case with a keyboard according to claim 4, wherein a distance between the connecting rod (21) and the keyboard input device is smaller than the limiting groove (12) The distance from the cover plate (16) is 0-lmm.

6. The rotary shaft type 2 mobile phone protective case with a keyboard according to claim 2 or 3 or 5, characterized in that, on each of the connecting rods (21), along the connecting rod (21) A fluted groove is provided in the diameter direction.

7 . The rotary shaft type mobile phone protection case with a keyboard according to claim 6 , wherein the keyboard input device comprises a soft keyboard ( 3 ) and a pot piece which are sequentially arranged from top to bottom ( 4) a circuit board (5) and a bottom plate (6), wherein a bluetooth module and a charging circuit are disposed on the circuit board (5); the rotating shaft (2) is disposed on one side of the bottom plate (6) And integrally formed with the bottom plate (6).

The rotary shaft type mobile phone protection case with a keyboard according to claim 1 or 2 or 3, characterized in that, under the keys of the soft keyboard (3) and at the center of the button A bump having a height of 0.5 to 0.8 mm is formed.

The mobile phone protection device according to claim 8, wherein the keyboard input device is further provided with: a flexible connection layer, which is pasted between the soft keyboard (3) and the pot piece (4), A through hole suitable for the passage of the bump is provided at a position corresponding to each of the bumps.

10. The mobile phone protective case according to claim 1 or 2 or 3 or 5 or 7 or 9, wherein on the opposite sides of the two connecting members and located in the limiting recess (12) Elastic protrusions (10) are respectively disposed on the outer periphery; elastic locking members (9) are respectively disposed on both side sides of the fixing rod, and the elastic protrusions (10) are adapted to be rotated to the elastic locking members (9) And is in abutting connection with the elastic locking member.