CN1107327C

CN1107327C - Button switch

Info

Publication number: CN1107327C
Application number: CN98117667A
Authority: CN
Inventors: 高桥一成
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 1997-09-01
Filing date: 1998-09-01
Publication date: 2003-04-30
Anticipated expiration: 2018-09-01
Also published as: DE69819097D1; TW381278B; KR19990029355A; EP0902450B1; JPH1173839A; EP0902450A1; DE69819097T2; CN1210348A; KR100322777B1

Abstract

The invention comes with the structure as a frame 16 made of metal sheet withheld by the external portion of the spacing rubber 14 of the rib-forming face 10c disposed on the casing 10 that is bent along the side wall 10b of the casing 10 and by means of the perimeter of the exposed casing 10 opposing the spacing rubber 14, for installation of the bent opposing plate 16b and, by means of friction of the spacing rubber 14, the push-button switch would not get stuck with the wood rod or the embossing tape and thus preventing poor withdrawal caused by the sealing machine.

Description

Push-button switch

Technical field

The invention relates to the invention of the dustproof and pocket buttons switch that the operation sense of touch is strong of between pressure button cover and button frame, inserting the liner that constitutes by materials such as rubber-like.

Background technology

Fig. 4 is the sectional view of the existing this push-button switch of expression.Push-button switch shown in the figure, have in the central fixed contact that disposing of inner bottom part 2 of its depression position 1a and fixed contact 3 on every side with being spaced from each other, and have outstanding to foreign side from its sidewall 1b, respectively with each fixed contact 2,3 terminals 4 that connect, 5 pressure button cover 1, be contained in the depression position 1a of this pressure button cover 1, remain with fixed contact 3 on every side and to contact, can contact and the disc-shaped Metal Contact device 6 that breaks away from central fixed contact 2, the depression position 1a flange all around that its peripheral part is withstood on pressure button cover 1 forms on the face 1c, cover the rubber packing 7 of this depression position 1a, the peripheral part of this rubber packing 7 is pressed to flange form face 1c, be fixed in the button frame 8 that the metallic plate on the pressure button cover 1 is made, and there is one from the outstanding upward operating portion 9a of the medium pore 8a of this button frame 8, be loaded into button spindle 9 on the Metal Contact device 6 by rubber packing 7, above-mentioned button frame 8 is by the set jut 1d riveted and fixed in pressure button cover 1 upper surface.The peripheral part of the rubber packing of being depressed from above by this button frame 87 forms at the flange of biting pressure button cover 1 under the state of flange of face 1c, and a whole circle is pressing this flange to form face 1c, and the position 1a that therefore caves in is sealed by rubber packing, constitutes dustproof construction.

Push-button switch with this structure, the operating portion 9a of its button spindle 9 to the below shown in the figure depress fixed apart from the time, the central portion of Metal Contact device 6 sends one sound of click, recurvation is come, contact with central fixed contact 2, therefore should central authorities' fixed contact 2 be communicated with fixed contact 3 on every side by Metal Contact device 6, switch is in opening.Under above-mentioned opening, as remove the operating physical force that the operating portion 9a to button spindle 9 applies, the Metal Contact device 6 that recurvation is come breaks away from central fixed contact 2 by the elasticity of self, return to original shape, switch returns to closed condition, this Metal Contact device 6 promotes button spindle 9 simultaneously, makes it rise to initial position.The initial position of button spindle 9 is defined as the position that the interior perimembranous (medium pore 8a around) of its flange part and button frame 8 is joined, and by this button frame 8, can prevent that button spindle 9 from coming off from pressure button cover 1.

But, above-mentioned existing push-button switch, because the peripheral part of the rubber packing of being depressed from above by button frame 87 is maintained fixed under compressive state, so the peripheral part of this rubber packing is easy to generate the bellying 7a (with reference to Fig. 4) that bloats some from the sidewall 1b of pressure button cover 1 to foreign side.In on this push-button switch is assembled into wiring board etc., generally all adopt so-called assembling automatically, promptly by fitting machine with the plug-in mounting frame or concavo-convex with on the finished product push-button switch adorned take out, be mounted to institute's allocation, therefore the bellying 7a that forms if any rubber type of material bloats around pressure button cover 1, when fitting machine takes out switch, with regard to easy frictional force push-button switch is stuck on plug-in mounting frame or concavo-convex being with because of this bellying 7a, cause pickup bad, that gives assembling automatically causes obstacle smoothly.

Summary of the invention

The present invention is on the metallic button frame of the liner peripheral part of pushing down the rubber type of material formation, be provided with this liner may bloat pressure button cover 1 part on every side relative to bending subtend sheet, make liner push-button switch can be stuck on plug-in mounting frame or concavo-convex being with, the automatic assembling of push-button switch is smooth.

Push-button switch of the present invention, has the pressure button cover that is disposing paired fixed contact at the inner bottom part at its depression position, be contained in the above-mentioned depression position of this pressure button cover, remain with in the aforementioned fixation contact one and to contact, can contact and the Metal Contact device that breaks away from another, its peripheral part is contained in around the aforementioned depression position of aforementioned pressure button cover, prevent that dust from entering the elastic insert in this depression position, the peripheral part of this elastic insert is pressed to the aforementioned installed surface of aforementioned pressure button cover, be fixed in the button frame that the metallic plate on this pressure button cover is made, and have one from the medium pore of this button frame to the outstanding operating portion of aforesaid depressed part one side opposition side, the aforementioned metal contactor is pressed by the button spindle that is out of shape, on aforesaid button frame, be provided with sidewall bending along aforementioned pressure button cover, the bending subtend sheet that is relative to the configuration with the side end face of aforementioned liner peripheral part.

For example, the profile of aforementioned pressure button cover is roughly square, and the profile of aforementioned liner is roughly circle, then can be in the side end face of this liner peripheral part near aforementioned pressure button cover sidewall, four positions of substantially equal spacing are provided with aforementioned bending subtend sheet to ground relatively.The profile of the profile of pressure button cover and aforementioned liner is roughly the same as described above, then almost can to ground aforementioned bending subtend sheet be set relatively in the whole side end face of this liner peripheral part.

Push-button switch with this structure, because the part assembling back that the liner that is made of the material of rubber and so on may bloat around the pressure button cover is covered by the bending subtend sheet of button frame, therefore when assembling automatically, difficult frictional force because of liner is stuck in push-button switch on plug-in mounting frame or concavo-convex being with and causes pickup bad.

Description of drawings

Fig. 1 is the sectional view of the push-button switch of one embodiment of the present of invention.

Fig. 2 is the stereogram of button frame shown in Figure 1.

Fig. 3 is the stereogram of the button frame of an alternative embodiment of the invention.

Fig. 4 is the sectional view of existing push-button switch.

Embodiment

With reference to the accompanying drawings embodiment is described, Fig. 1 is the sectional view of push-button switch, and Fig. 2 is the stereogram of button frame shown in Figure 1.

Push-button switch shown in Figure 1, disposing central fixed contact 11 and fixed contact 12 on every side by inner bottom part at its depression position 10a with being spaced from each other, and have from its sidewall 10b to exposing outside, respectively with each fixed contact 11, the pressure button cover 10 of 12 terminals (not expressing among the figure) that connect, be contained in the depression position 10a of this pressure button cover 10, remain with fixed contact 12 on every side and to contact, can contact and the disc-shaped Metal Contact device 13 that breaks away from central fixed contact 11, its peripheral part is installed in flange around the depression position 10a of pressure button cover 10 and forms flange-shape rubber packing 14 on the face 10c, be made into integration with this rubber packing 14, be loaded into the button spindle 15 on the Metal Contact device 13, and have along the metallic plate of downward bending fastening piece 16a that bends of the sidewall 10b of pressure button cover 10 and bending subtend sheet 16b, the button frame 16 that promptly is fixed in pressure button cover 10 under the state of the peripheral part of rubber packing 14 being pressed to flange formation face 10c constitutes, and the operating portion 15a of button spindle 15 is outstanding upward from the medium pore 16c of this button frame 16.As shown in Figure 2,10 identical at profile and pressure button cover, roughly be the both sides that foursquare aforementioned button frame 16 is parallel to each other, be formed with aforementioned bending fastening piece 16a, the central portion on each limit forms four above-mentioned bending subtend sheet 16b altogether simultaneously.A pair of bending fastening piece 16a goes up fastening jut 10d (with reference to Fig. 1) fastening of formation respectively with the sidewall 10b of pressure button cover 10, respectively bend the side end face (outer peripheral face) that subtend sheet 16b is disposed at the peripheral part of rubber packing 14 respectively simultaneously.

In the present embodiment, the profile of rubber packing 14 is roughly rounded, in the side end face of these rubber packing 14 peripheral parts, at the sidewall 10b place near pressure button cover 10, four positions of substantially equal spacing are arranged, and the bending subtend sheet 16b of button frame 16 is relative to the configuration with these four positions respectively.Press to the flange-shape rubber packing 14 of the outer peripheral face of this pressure button cover 10 from above, form at the flange of biting pressure button cover 10 under the state of flange of face 10c, a whole circle is pressing this flange to form face 10c, therefore by the sealing height of this rubber packing 14, constitute dustproof construction with the depression position 10a of the bottom surface capping of button spindle 15.

Above-mentioned push-button switch installs on plug-in mounting frame or concavo-convex being with after assembling finishes, be assembled to when wiring board etc. gets on, be by kludge with it from the plug-in mounting frame or concavo-convexly be with taking-up, install to automatically on institute's allocation.When carrying out so automatic assembling, depress from above by button frame 16, the peripheral part that is in the rubber packing 14 of compressive state can or can not bloat to foreign side from the sidewall 10b of pressure button cover 10, because of its frictional force causes obstacle to kludge, this was a problem originally, but according to present embodiment, because four positions that the interval around rubber packing 14 may bloat pressure button cover 10 equates, dispose bending subtend sheet 16b to ground relatively, the measure of promptly having taked not allow rubber packing 14 bloat around the pressure button cover 10, therefore when assembling automatically, can push-button switch be stuck on plug-in mounting frame or concavo-convex being with because of the frictional force of rubber packing 14, assembling cause pickup bad, so can successfully be carried out all the time automatically.

Above-mentioned push-button switch when the button spindle 15 of making one and rubber packing 14 are being assembled into after button frame 16 gets on, be checked, in order it is assembled on the pressure button cover 10 then.At this moment, the relative position relation of button spindle 15 and button frame 16 is determined by the subtend sheet 16b that respectively bends that is abutted against with the side end face (outer peripheral face) of rubber packing 14 peripheral parts, therefore can avoid the malposition in the stage of assembling, and can improve the rate of finished products of automatic assembling.In addition, because the rubber packing of this push-button switch 14 has been made one with button spindle 15, number of components and parts is reduced, and therefore is expected to reduce production costs significantly.

The action of above-mentioned push-button switch and aforementioned existing switch are same.That is to say, the operating portion 15a of its button spindle 15 to the below shown in Fig. 1 depress fixed apart from the time, the central portion of Metal Contact device 13 sends one sound of click, recurvation is come, contact with central fixed contact 11, therefore should central authorities' fixed contact 11 be communicated with fixed contact 12 on every side by Metal Contact device 13, switch is in opening.Under opening, as remove the operating physical force that the operating portion 15a to button spindle 15 applies, the Metal Contact device 13 that recurvation is come breaks away from central fixed contact 11 by the elasticity of self, return to original shape, switch returns to closed condition, and these Metal Contact device 13 promotion button spindles 15 make it rise to initial position simultaneously.The initial position of button spindle 15 is defined as the position that the interior perimembranous of rubber packing 14 and the interior perimembranous of button frame 16 (medium pore 16c around) are joined, and by this button frame 16, can prevent that button spindle 15 from coming off from pressure button cover 10.

Shuo Ming push-button switch in the above-described embodiments, the profile of its pressure button cover roughly are square, and the profile of rubber packing is roughly rounded, and certainly, the present invention also goes for the profile of pressure button cover and the roughly the same push-button switch of profile of rubber packing.In other words, when the profile of the profile of pressure button cover and rubber packing is roughly the same, the almost whole side end face (outer peripheral face) of the peripheral part of this rubber packing all might bloat around pressure button cover, pickup when adopting the button frame of shape shown in Figure 2 to be difficult to avoid assembling automatically is bad, but, as long as the profile of pressure button cover and rubber packing is the equal big or small foursquare shape that roughly is, the button frame 16 that metallic plate is made is shape shown in Figure 3, promptly make four limits that roughly are foursquare top board from profile, to be that cardinal extremity (folding line) is outstanding downwards with a whole limit be provided with the big bending subtend sheet 16b of width and constitute box-shaped for each, almost all is surrounded the outer peripheral face of rubber packing just passable with these bending subtend sheets 16b.Button frame 16 shown in Figure 3 is fixed in the push-button switch on this pressure button cover applicable to jut that the pressure button cover upper surface is set inserts riveted holes 16d riveted joint.

The present invention implements with above-mentioned execution mode, can obtain following effect.

Because the part assembling back that the liner that is made of the material of rubber and so on may bloat around the pressure button cover is covered by the bending subtend sheet of button frame, therefore when assembling automatically, difficult frictional force because of liner is stuck in push-button switch on plug-in mounting frame or concavo-convex being with and causes pickup bad.

In addition, because liner and button spindle have been made one, not only number of components and parts is reduced, and the relative position relation of button spindle and button frame is determined by the subtend sheet that respectively bends that the outer peripheral face with rubber packing is abutted against, therefore can avoid the malposition in the stage of assembling, can improve the rate of finished products of automatic assembling, reduce production costs significantly.

Claims

1. push-button switch, has the pressure button cover that is disposing paired fixed contact at the inner bottom part at its depression position, be contained in the aforementioned depression position of this pressure button cover, remain with in the aforementioned fixation contact one and to contact, can contact and the Metal Contact device that breaks away from another, its peripheral part is contained in around the aforementioned depression position of aforementioned pressure button cover, prevent that dust from entering the elastic insert in this depression position, the peripheral part of this elastic insert is pressed to the aforementioned installed surface of aforementioned pressure button cover, be fixed in the button frame that the metallic plate on this pressure button cover is made, and have one from the medium pore of this button frame to the outstanding operating portion of aforesaid depressed part one side opposition side, the aforementioned metal contactor is pressed by the button spindle that is out of shape, it is characterized in that on aforesaid button frame, being provided with sidewall bending along aforementioned pressure button cover, the bending subtend sheet that is relative to the configuration with the side end face of aforementioned liner peripheral part.

2. push-button switch according to claim 1, the profile that it is characterized in that aforementioned pressure button cover is roughly square, the profile of aforementioned liner is roughly circle, in the side end face of this liner peripheral part near aforementioned pressure button cover sidewall, four positions of substantially equal spacing are provided with aforementioned bending subtend sheet to ground relatively.

3. push-button switch according to claim 1 is characterized in that the profile of the profile of aforementioned pressure button cover and aforementioned liner is roughly the same, to ground aforementioned bending subtend sheet is set relatively in the whole side end face of this liner peripheral part.

4. according to each described push-button switch of claim 1 to 3, it is characterized in that aforementioned liner and aforementioned button spindle are made into integration.