EP0227256B1 - Jack combined with an air pump and using a common drive motor - Google Patents
Jack combined with an air pump and using a common drive motor Download PDFInfo
- Publication number
- EP0227256B1 EP0227256B1 EP86308292A EP86308292A EP0227256B1 EP 0227256 B1 EP0227256 B1 EP 0227256B1 EP 86308292 A EP86308292 A EP 86308292A EP 86308292 A EP86308292 A EP 86308292A EP 0227256 B1 EP0227256 B1 EP 0227256B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air pump
- jack
- motor
- pump
- oil pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
Definitions
- DE-A-3,108,208 discloses a vehicle jack which is driven by an electric motor via a screw drive.
- US-A-2,458,590 discloses an automobile jack driven by an air pump, the air pump being driven by an electric motor which also drives rollers for driving the wheels of a vehicle lifted on the jack, so as to start the engine.
- GB-A-131,805 discloses a combined air pump and vehicle lifting jack. In use, compressed air produced by manual operation of the jack is used subsequently to pump up the tyres of a vehicle.
- the present invention provides a combined air pump and vehicle lifting jack (as disclosed in GB 131,805) characterised by a common rotary drive motor which powers both the air pump and an oil pump, the oil pump being arranged to operate a hydraulic lifting jack and the oil pump having drain control means which can be set so as to disable the jack.
- a drive motor 210 has an elongated shaft 201 which serves as the input shaft for the jack and is used to drive the piston 203 of an air pump 202 and to drive speed-reduction gears 206 and 207 as well as speed-reduction gears 206' and 207' of the jack oil pump.
- the above-said structure is further provided with a drain back flow operating valve 205 in the fluid return circuit of the outlet of air pump 202 or jack 208.
- the drain valve of the unit to be operated can be set at the blocked position during operation, while drain valves of the units not to be operated will be set at the respective drain position for the operating selections, thereby determining whether the air pump or jack is driven.
- the jack of Figures 1 to 3 is a stand type jack, in which a stand type jack main body 260 is installed vertically on a base 261; the main body is a cylinder type oil pressure tank coupled with a stand shaft 262 which can move upward and downward under compression.
- a top block 263 is installed on the upper side of the stand shaft 262 and serves as a carrying member; a drive motor 210 with shaft 201 protruding from its two ends is mounted transversely in the cylinder body.
- On one end of the shaft is mounted a small gear wheel 206 which is coupled to a bias mechanism 204 (comprising a curved bias shaft or a bias link rod moved by a bias wheel) by means of large gear wheel 207.
- the bias mechanism drives a crank 209 which is coupled to a gas pump piston 203.
- the gas pump has an intake opening for gas input, an exhaust opening for output of compressed gas and a gas channel communicating with a pressure manometer 264.
- a small gear wheel 206' is mounted which engages a large gear wheel 207'.
- This in turn drives a bias mechanism (including a curved bias shaft or a bias link rod moved by a bias wheel) to cause bias shaft 220 to reciprocate crank set 209'.
- This reciprocating motion is transmitted via a coupling pin 209''' to an oil pump piston rod 209'' which reciprocates within an oil pump cylinder 208.
- a drain circuit piston 205 is used for drain reduction of the jack or to release drain in the non-driven state.
- the large gear wheel 207' has a reduced diameter portion in the periphery of which a circumferential array of holes 207" (which may be screw holes) are formed. These can accommodate an operating rod, so that the oil pump can be driven by back and forth motion by hand.
- FIGS 4, 5 and 6 show a coaxial horizontal-type jack.
- the jack is mounted on wheels 273 which are mounted on wheel shaft 272 at one end of the jack body.
- a drive rod 281 driven by a hydraulic oil pressure tank 280 is coupled with a rising arm assembly 274 by a coupling pin 276, the rising arm plate 274 being mounted on a rod 275 which acts as the centre of oscillation. Consequently, as plate 274 swings about rod 275, an upright arm 277 coupled to plate 274 by coupling pin 278 rises and lifts a supporting block 279.
- a common drive motor 210 having a shaft 201 protruding at each end is mounted on one side of the jack body.
- One end of the shaft has a small gear wheel 206 mounted thereon, which drives a bias mechanism 204 (including a curved bias shaft or a bias link rod moved by the bias wheel) via a large gear wheel 207.
- the gas pump has an intake opening for gas input, an exhaust opening for output of compressed gas and a gas channel communicating with a pressure manometer 264.
- the other end of the output shaft of motor 210 has mounted thereon a small transverse gear wheel 206' and which drives a large gear wheel 207'''.
- crank 220' This in turn drives a bias mechanism (including a curved bias shaft or a bias link rod moved by bias wheel) which drives a crank 220'.
- the reciprocating motion of crank 220' is transmitted by a coupling pin 209''' to a piston rod of the oil pump 280.
- a drain circuit piston 205 is provided for draining purposes in order to prevent the drive.
- the rear portion of the large gear wheel is provided with a circumferential array of holes 207'' (which may be screw holes) for accommodating an operating rod which can be driven back and forth by hand to drive the jack oil pump.
- jack devices can be of the AC/DC dual purpose type as shown in Fig. 8.
- a transformer 401 is provided to transform the household power supply into a low voltage output. Its low voltage output end is connected to a rectifier 402 for rectifying the low voltage output and is connected in parallel with a socket 403.
- Socket 403 can be used to supply DC to energise the above said DC motor 404 and drive the air pump or jack. Socket 403 can also be used as a DC output socket for charging purposes. Alternatively an output terminal can be added for this purpose.
- a switch 405 is connected in series with the input of the DC motor 404 to cut off the DC motor 404, when the circuit serves as a charging power supply.
Abstract
Description
- In general, vehicles are often equipped with a wide variety of tools such as a jack and a tyre pump in order to enable drivers to carry out repairs and maintenance for example when a tyre punctures. However such tools often fill up the luggage compartment and in any case take up a lot of space in the car. Furthermore the total cost of such tools is quite significant.
- DE-A-3,108,208, for example, discloses a vehicle jack which is driven by an electric motor via a screw drive.
- US-A-2,458,590 discloses an automobile jack driven by an air pump, the air pump being driven by an electric motor which also drives rollers for driving the wheels of a vehicle lifted on the jack, so as to start the engine.
- GB-A-131,805 discloses a combined air pump and vehicle lifting jack. In use, compressed air produced by manual operation of the jack is used subsequently to pump up the tyres of a vehicle.
- None of the above prior art documents discloses an arrangement in which an electric motor drives both an air pump and a vehicle-lifting jack.
- The present invention provides a combined air pump and vehicle lifting jack (as disclosed in GB 131,805) characterised by a common rotary drive motor which powers both the air pump and an oil pump, the oil pump being arranged to operate a hydraulic lifting jack and the oil pump having drain control means which can be set so as to disable the jack.
- Preferred features of the invention are defined in the dependent claims.
- Preferred embodiments of the invention are described below by way of example only with reference to Figures 1 to 8 of the accompanying drawings, of which:
- Figure 1 is a side elevation of a combined air pump and vehicle lifting jack in accordance with the invention;
- Figure 2 is an end elevation of the air pump and jack of Figure 1;
Figure 3 is a further end elevation of the air pump and jack of Figure 1; - Figure 4 is a side elevation of a horizontal combined air pump and lifting jack in accordance with the invention;
- Figure 5 is a plan view of the air pump and lifting jack of Figure 4;
- Figure 6 is an end elevation of the air pump and lifting jack of Figure 4;
- Figure 7 shows a variant in which the jack and pump assembly are separate, and
- Figure 8 is a circuit diagram of an electrical system that can be incorporated in the above embodiments.
- In the embodiment shown in Figures 1 to 3, a
drive motor 210 has anelongated shaft 201 which serves as the input shaft for the jack and is used to drive thepiston 203 of anair pump 202 and to drive speed-reduction gears flow operating valve 205 in the fluid return circuit of the outlet ofair pump 202 orjack 208. The drain valve of the unit to be operated can be set at the blocked position during operation, while drain valves of the units not to be operated will be set at the respective drain position for the operating selections, thereby determining whether the air pump or jack is driven. - The jack of Figures 1 to 3 is a stand type jack, in which a stand type jack
main body 260 is installed vertically on abase 261; the main body is a cylinder type oil pressure tank coupled with astand shaft 262 which can move upward and downward under compression. Atop block 263 is installed on the upper side of thestand shaft 262 and serves as a carrying member; adrive motor 210 withshaft 201 protruding from its two ends is mounted transversely in the cylinder body. On one end of the shaft is mounted asmall gear wheel 206 which is coupled to a bias mechanism 204 (comprising a curved bias shaft or a bias link rod moved by a bias wheel) by means oflarge gear wheel 207. The bias mechanism drives acrank 209 which is coupled to agas pump piston 203. The gas pump has an intake opening for gas input, an exhaust opening for output of compressed gas and a gas channel communicating with apressure manometer 264. - On the other end of the shaft of motor 210 a small gear wheel 206' is mounted which engages a large gear wheel 207'. This in turn drives a bias mechanism (including a curved bias shaft or a bias link rod moved by a bias wheel) to cause
bias shaft 220 to reciprocate crank set 209'. This reciprocating motion is transmitted via a coupling pin 209''' to an oil pump piston rod 209'' which reciprocates within anoil pump cylinder 208. Adrain circuit piston 205 is used for drain reduction of the jack or to release drain in the non-driven state. - As shown in Figure 1 the large gear wheel 207' has a reduced diameter portion in the periphery of which a circumferential array of
holes 207" (which may be screw holes) are formed. These can accommodate an operating rod, so that the oil pump can be driven by back and forth motion by hand. - Figures 4, 5 and 6 show a coaxial horizontal-type jack. The jack is mounted on
wheels 273 which are mounted onwheel shaft 272 at one end of the jack body. Adrive rod 281 driven by a hydraulicoil pressure tank 280 is coupled with a risingarm assembly 274 by acoupling pin 276, the risingarm plate 274 being mounted on arod 275 which acts as the centre of oscillation. Consequently, asplate 274 swings aboutrod 275, anupright arm 277 coupled toplate 274 by couplingpin 278 rises and lifts a supportingblock 279. - A
common drive motor 210 having ashaft 201 protruding at each end is mounted on one side of the jack body. One end of the shaft has asmall gear wheel 206 mounted thereon, which drives a bias mechanism 204 (including a curved bias shaft or a bias link rod moved by the bias wheel) via alarge gear wheel 207. Thus it can move thecrank 209 and hencegas pump piston 203 to pump gas. The gas pump has an intake opening for gas input, an exhaust opening for output of compressed gas and a gas channel communicating with apressure manometer 264. The other end of the output shaft ofmotor 210 has mounted thereon a small transverse gear wheel 206' and which drives a large gear wheel 207'''. This in turn drives a bias mechanism (including a curved bias shaft or a bias link rod moved by bias wheel) which drives a crank 220'. The reciprocating motion of crank 220' is transmitted by a coupling pin 209''' to a piston rod of theoil pump 280. Adrain circuit piston 205 is provided for draining purposes in order to prevent the drive. The rear portion of the large gear wheel is provided with a circumferential array of holes 207'' (which may be screw holes) for accommodating an operating rod which can be driven back and forth by hand to drive the jack oil pump. - The above-described various combined air pump and hydraulic jack devices using a common drive motor can be of the separate type as shown in Fig. 7
- Furthermore the above-mentioned jack devices can be of the AC/DC dual purpose type as shown in Fig. 8. As shown in Fig. 8, inside the base a
transformer 401 is provided to transform the household power supply into a low voltage output. Its low voltage output end is connected to arectifier 402 for rectifying the low voltage output and is connected in parallel with asocket 403.Socket 403 can be used to supply DC to energise the above saidDC motor 404 and drive the air pump or jack.Socket 403 can also be used as a DC output socket for charging purposes. Alternatively an output terminal can be added for this purpose. Aswitch 405 is connected in series with the input of theDC motor 404 to cut off theDC motor 404, when the circuit serves as a charging power supply.
Claims (4)
- A combined air pump and vehicle lifting jack characterised by a common rotary drive motor (210) which powers both the air pump (202) and an oil pump (208), the oil pump being arranged to operate a hydraulic lifting jack (260, 262, 263; 280, 281, 274-279) and the oil pump having drain control means (205) which can be set so as to disable the jack.
- A combined air pump and vehicle lifting jack as claimed in claim 1 wherein both the oil pump (208) and the air pump (202), have drain valve means (205) which can be set so as to disable the air pump and jack selectively.
- A combined air pump and vehicle lifting jack as claimed in claim 2 wherein said motor (210) has an elongate double-ended shaft (201) having respective end portions projecting from the motor, one of said end portions being coupled to said air pump (202) and the other of said end portions being coupled via reduction gearing (207) to said oil pump (208), said hydraulic jack including a generally horizontally disposed hydraulic cylinder (280), which drives a piston (281) in the horizontal direction, the piston (281) being coupled to an offset portion (276) of a swinging link (274) which drives a support arm (277) in the vertical direction, the support arm carrying a supporting block (279) for lifting a vehicle.
- A combined air pump and vehicle lifting jack as claimed in any preceding claim, further comprising a mains transformer (401) having a low-voltage output winding coupled via a rectifier (402) and a switch (405) to said motor (404), a D.C. input/output socket being connected in parallel with said motor to enable the motor to be driven by an external D.C. supply as an alternative to the mains and to enable a low voltage D.C. output to be taken from said terminals when said transformer is energised from the mains and said motor is disconnected by said switch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86308292T ATE63531T1 (en) | 1985-10-24 | 1986-10-24 | JACK COMBINED WITH AN AIR PUMP AND DRIVEN BY A COMMON ENGINE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8526270 | 1985-10-24 | ||
GB858526270A GB8526270D0 (en) | 1985-10-24 | 1985-10-24 | Jack |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0227256A2 EP0227256A2 (en) | 1987-07-01 |
EP0227256A3 EP0227256A3 (en) | 1988-07-13 |
EP0227256B1 true EP0227256B1 (en) | 1991-05-15 |
Family
ID=10587203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86308292A Expired - Lifetime EP0227256B1 (en) | 1985-10-24 | 1986-10-24 | Jack combined with an air pump and using a common drive motor |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0227256B1 (en) |
AT (1) | ATE63531T1 (en) |
DE (1) | DE3679297D1 (en) |
ES (1) | ES2022127B3 (en) |
GB (1) | GB8526270D0 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7225959B2 (en) | 2001-04-30 | 2007-06-05 | Black & Decker, Inc. | Portable, battery-powered air compressor for a pneumatic tool system |
US7494035B2 (en) | 2001-04-30 | 2009-02-24 | Black & Decker Inc. | Pneumatic compressor |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6468047B1 (en) * | 2001-05-22 | 2002-10-22 | Ying-Che Huang | Power pump device |
CN100425181C (en) * | 2005-03-08 | 2008-10-15 | 唐斌 | Automatic left and right rotatable chair |
KR101704056B1 (en) * | 2011-10-26 | 2017-02-08 | 현대자동차주식회사 | motor jack |
CN109650278A (en) * | 2019-01-24 | 2019-04-19 | 仉贵勇 | Pneumatic jack |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB131805A (en) * | 1900-01-01 | |||
US1983444A (en) * | 1934-03-22 | 1934-12-04 | Dry William Alfred | Pneumatic pump and jack |
US2458590A (en) * | 1946-04-19 | 1949-01-11 | George W Harris | Combination automobile jack and engine starting device |
CH462411A (en) * | 1967-12-29 | 1968-09-15 | Wiederkehr Hans | Jack |
DE3108208A1 (en) * | 1981-03-04 | 1982-09-16 | Eckhart Dipl.-Ing. 4544 Ladbergen Dewert | Jack for motor vehicles or small utility vehicles |
DE3470514D1 (en) * | 1983-02-24 | 1988-05-26 | Emgi Engineering Srl | Electrically operated lifting jack |
-
1985
- 1985-10-24 GB GB858526270A patent/GB8526270D0/en active Pending
-
1986
- 1986-10-24 AT AT86308292T patent/ATE63531T1/en not_active IP Right Cessation
- 1986-10-24 EP EP86308292A patent/EP0227256B1/en not_active Expired - Lifetime
- 1986-10-24 DE DE8686308292T patent/DE3679297D1/en not_active Expired - Lifetime
- 1986-10-24 ES ES86308292T patent/ES2022127B3/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7225959B2 (en) | 2001-04-30 | 2007-06-05 | Black & Decker, Inc. | Portable, battery-powered air compressor for a pneumatic tool system |
US7494035B2 (en) | 2001-04-30 | 2009-02-24 | Black & Decker Inc. | Pneumatic compressor |
Also Published As
Publication number | Publication date |
---|---|
GB8526270D0 (en) | 1985-11-27 |
EP0227256A2 (en) | 1987-07-01 |
EP0227256A3 (en) | 1988-07-13 |
ES2022127B3 (en) | 1991-12-01 |
DE3679297D1 (en) | 1991-06-20 |
ATE63531T1 (en) | 1991-06-15 |
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