Air jack

Abstract

The present invention provides a safe, efficient and convenient pneumatic jack with multiple functions such as an air pump and lighting. When in use, just plug in the 12V power supply of the cigarette lighter, turn on the air pump switch, and the air pressure will be generated in the micro air pump working pneumatic jack. The top section and several middle sections will be pushed out at the same time, and the required height can be raised at one time, without manual operation, saving time and labor. At night, the LED lights around the lighting switch can also be turned on to provide lighting. If the tire pressure is found to be insufficient during driving, the conversion switch can be turned to the air pump position, and the air pressure jack can be used to inflate the tire. The inflation situation can be controlled by the built-in digital pressure gauge. It is easy to use, convenient to carry, exquisite and beautiful, and can be used for multiple purposes.

Description

Technical Field

[0001] The present invention relates to the technical field of jacks, in particular to the technical field of pneumatic jacks. Background Art

[0002] The jack is the simplest lifting equipment with a small lifting height and a wide range of applications. It is mainly used in factories and mines, vehicle maintenance and other lifting support work. At present, the jacks equipped for small cars and large trucks are almost all scissor-type screw-shaking mechanical jacks and traditional hydraulic jacks. The first type of scissor-type screw-shaking mechanical jack is quite laborious and slow to lift due to the angle when it is just raised, which is time-consuming and laborious. Although the second type of traditional hydraulic jack is more labor-saving to press one by one, it is also more time-consuming, especially when it is raised to a certain height, due to the height limit, the car needs to be padded with hard objects before the jack is removed, and it needs to be reset and the first section of the screw part is screwed out to the previous height before it can continue to be pushed out to the appropriate height. It is very troublesome. If the hard object for replacement is not brought with the car, it is difficult to find it locally, and it has a single purpose and is just a jack, which is inconvenient to use. Summary of the invention

[0003] The purpose of the present invention is to solve the problems of technical performance, inconvenience in use and single function in existing products, and to provide a safe, efficient and convenient pneumatic jack with multiple functions such as inflation and lighting.

[0004] In order to solve many problems such as the technical performance of the above-mentioned products, the technical solution adopted by the present invention is: including a base, a bottom section, a plurality of intermediate sections, a top section, a piston and a middle hole piston, and a rubber liner. The bottom section, a plurality of intermediate sections, a top section, and a retractable sleeve that are fixedly and sealedly connected to the base and are mutually connected in the form of a pull-rod antenna constitute a pneumatic jack body with a closed ejection structure.

[0005] Preferably, the main body of the closed ejection structure is composed of a piston with double seals, a dynamic sealing ring sleeved on the piston and the middle hole piston, and a gas bowl pressed on the piston and the bottom surface of the middle hole piston with a pressure ring, as well as a base and a bottom section, a number of intermediate sections and the middle hole piston, all of which are sealed with static sealing rings and fastened with screws.

[0006] Preferably, the main body of the closed ejection structure is composed of a bottom section, several middle sections, a top section, and a retractable pull-rod antenna-type sleeve with a rubber liner inside. The bottom opening of the rubber liner with a sealing ring is pressed into the bottom surface of the bottom section and the groove provided on the base, and is sealed and connected by screws. The inner sides of the bottoms of the bottom section and several middle sections are provided with limiting protrusions.

[0007] Preferably, the micro air pump is composed of a motor and its connected worm gear, a connecting rod, and a piston in a cylinder, which are movably connected in sequence and placed in a base. The air outlet of the cylinder is connected to a digital pressure gauge and a conversion seat fixed on the outside of the base through a hose. The conversion seat is sealed and rotatably connected to the open end of the conversion duct. The outer portion of the conversion duct is covered with a sealing rubber sleeve with holes corresponding to its three holes, and is arranged in its long hole of the base, and is supported in an annular groove on the conversion duct by a top wire spring. The air pump interface fixed on the base is connected or disconnected with the conversion seat through the inflation channel and the inflation and exhaust holes on the conversion duct. One end of the exhaust channel is connected with the inside of the cavity body, and the other end is connected with the exhaust hole outside the base. The inflation and exhaust channel and the exhaust hole in the middle are connected or disconnected with the conversion. A check valve is provided at one end of the air inlet channel and a port connected with the inside of the cavity body, and the other end is connected or disconnected with the inflation and exhaust channel and the conversion seat with the conversion. The blind end of the conversion duct is fixedly connected with the knob.

[0008] Preferably, the air pump is fixed to the outside of the bottom section of the pneumatic jack body by a cable tie, and the two are independent structures. The air pump interface is connected to the air nozzle fixed on the base through an inflation tube, and the air nozzle is connected to the cavity through an air inlet channel. A check valve is provided at the port of the air inlet channel in the cavity body, and an exhaust button with a rubber pad is provided on the base, which is tightened by a spring and is connected to the cavity body through an exhaust channel.

[0009] Preferably, an LED lighting lamp is provided on the circumferential surface of the base.

[0010] Preferably, the conversion device connected to the knob adopts a ceramic valve core structure.

[0011] The beneficial effects of the present invention are as follows: since the air pump is ejected by air pressure, a miniature air pump can be directly set in the base, making the product compact and easy to carry and use. As long as the 12V power supply of the cigarette lighter is plugged in and the air pump switch is turned on, air pressure is generated in the working air pressure jack of the miniature air pump. The top section and several intermediate sections are ejected at the same time and can be raised to the required height at one time. No manual operation is required, which saves time and effort. At night, the LED lighting around the lighting switch can also be turned on to provide lighting. If the tire pressure is found to be insufficient during driving, the conversion switch can be turned to the air pump position, and the air pressure jack can be used to inflate the tire. The inflation situation can be controlled by the built-in digital pressure gauge. For vehicles equipped with small air pumps or special large occasions, the third and fourth embodiments can be used to select a single air pressure jack. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the pneumatic jack in the first embodiment of the present invention.

[0013] Figure 2 for Figure 1Schematic diagram of the structure of the middle base viewed from the bottom up.

[0014] Figure 3 for Figure 1 Front view of the exterior.

[0015] Figure 4 This is a schematic diagram of the structure of the attachment.

[0016] Figure 5 It is a structural schematic diagram of the pneumatic jack in the fourth embodiment of the present invention.

[0017] In the figure: 1-top section, 2-middle section, 3-dynamic sealing ring, 4-gas bowl, 5-static sealing ring, 6-middle hole piston, 7-pressure ring, 8-intake channel, 9-air pump interface, 10-inflating channel, 11-knob, 12-conversion guide tube, 13-inflating and exhausting holes, 14-inflating and exhausting channels, 15-sealing rubber sleeve, 16-exhaust channel, 17-exhaust hole, 18-intake hole, 19-hose, 20-cylinder, 21-connecting rod, 22-motor, 2 3-worm gear, 24-bottom cover, 25-base, 26-LED lighting, 27-check valve, 28-screw, 29-bottom section, 30-piston, 31-inflating tube, 32-digital pressure gauge, 33-top screw, 34-spring, 35-top spring, 36-conversion seat, 37-screw hole, 38-ring groove, 39-rubber liner, 40-air pump, 41-cable tie, 42-air nozzle, 43-button, 44-limiting protrusion, 45-switch. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and should not be construed as limiting this patent. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0019] refer to Figure 1-5 A pneumatic jack includes a bottom section, an intermediate section and a top section with a base, and also includes a base 25, a bottom section 29, a plurality of intermediate sections 2, a top section 1, a piston 30 and a middle hole piston 6, a rubber liner 39, a bottom section 29 fixedly and sealedly connected to the base 25, a plurality of intermediate sections 2, a top section 1, and a retractable sleeve that is a pull rod antenna type and is mutually connected to form a pneumatic jack body with a closed ejection structure through the above components. Embodiment 1

[0020] A pneumatic jack also includes a base 25, a bottom section 29, a plurality of intermediate sections 2, a top section 1, a piston 30 and a center hole piston 6. The bottom section 29, the plurality of intermediate sections 2, the top section 1 and a telescopic sleeve which are fixedly and sealedly connected to the base 25 form a pneumatic jack body with a closed ejection structure.

[0021] Its main closed ejection structure is composed of a piston with double sealing, including a dynamic sealing ring 3 sleeved on the piston 30 and the middle hole piston 6, and a gas bowl 4 pressed on the bottom surface of the piston 30 and the middle hole piston 6 by a pressure ring 7, as well as a base 25 and a bottom section 29, a plurality of intermediate sections 2 and the middle hole piston 6, which are all sealed with a static sealing ring 5 and fastened with screws 28.

[0022] The micro air pump is composed of a motor 22 and a worm gear 23 connected thereto, a connecting rod 21, and a piston in a cylinder 20, which are movably connected in sequence and are placed in a base 25. The air outlet of the cylinder 20 is connected to a digital pressure gauge 32 and a conversion seat 36 fixed to the outside of the base 25 through a hose 19. The conversion seat 36 is connected to the open end of the conversion conduit 12 in a sealed rotational manner. The outside of the conversion conduit 12 is covered with a sealing rubber sleeve 15 corresponding to the three holes of the filling and exhaust holes 13, the exhaust holes 17, and the air inlet holes 18, and is arranged in the long hole of the base 25, and is pressed against the annular groove 38 on the conversion conduit 12 through a top screw 33, a spring 34, and a top spring 35, so as to fix the conversion conduit 12. The air pump interface 9 fixed on the base 25 is connected or disconnected with the conversion seat 36 through the charging channel 10 and the charging and exhaust holes 13 and the charging and exhaust channels 14 on the conversion conduit 12. One end of the exhaust channel 16 is connected with the cavity body, and the other end is connected with the exhaust hole outside the base 25. The middle is connected or disconnected with the conversion through the charging and exhaust holes 13 and the charging and exhaust channels 14 and the exhaust holes 17. One end of the air inlet channel 8 is connected with the cavity body. The port is provided with a check valve 27, and the other end is connected with the air inlet hole 18. The charging and exhaust channels 14 and the conversion seat 36 are connected or disconnected with the conversion. The blind end of the conversion conduit 12 is fixedly connected with the knob 11, and the bottom cover 24 is covered. The circumferential surface of the base 25 is provided with an LED lighting lamp 26. Embodiment 2

[0023] A pneumatic jack also includes a base 25, a bottom section 29, a plurality of intermediate sections 2, a top section 1, and a rubber liner 39. The bottom section 29, the plurality of intermediate sections 2, the top section 1, and a retractable sleeve that are mutually connected to the base 25 form a closed ejection structure of the pneumatic jack body.

[0024] The main body of the closed ejection structure is composed of a bottom section 29, a plurality of intermediate sections 2, a top section 1, and a retractable pull-rod antenna-type sleeve with a rubber liner 39. The bottom of the rubber liner 39 with a sealing ring is pressed into the bottom surface of the bottom section 29 and the groove provided on the base 25, and is fastened and sealed by screws 28 passing through screw holes 37. The bottom inner sides of the bottom of the bottom section 29 and the plurality of intermediate sections 2 are provided with limiting protrusions 44.

[0025] The micro air pump is composed of a motor 22 and a worm gear 23 connected thereto, a connecting rod 21, and a piston in a cylinder 20, which are movably connected in sequence and are placed in a base 25. The air outlet of the cylinder 20 is connected to a digital pressure gauge 32 and a conversion seat 36 fixed to the outside of the base 25 through a hose 19. The conversion seat 36 is connected to the open end of the conversion conduit 12 in a sealed rotational manner. The outside of the conversion conduit 12 is covered with a sealing rubber sleeve 15 corresponding to the three holes of the filling and exhaust holes 13, the exhaust holes 17, and the air inlet holes 18, and is arranged in the long hole of the base 25, and is pressed against the annular groove 38 on the conversion conduit 12 through a top screw 33, a spring 34, and a top spring 35, so as to fix the conversion conduit 12. The air pump interface 9 fixed on the base 25 is connected or disconnected with the conversion seat 36 through the charging channel 10 and the charging and exhaust holes 13 and the charging and exhaust channels 14 on the conversion conduit 12. One end of the exhaust channel 16 is connected with the cavity body, and the other end is connected with the exhaust hole outside the base 25. The middle is connected or disconnected with the conversion through the charging and exhaust holes 13 and the charging and exhaust channels 14 and the exhaust holes 17. One end of the air inlet channel 8 is connected with the cavity body. The port is provided with a check valve 27, and the other end is connected with the air inlet hole 18. The charging and exhaust channels 14 and the conversion seat 36 are connected or disconnected with the conversion. The blind end of the conversion conduit 12 is fixedly connected with the knob 11, and the bottom cover 24 is covered. The circumferential surface of the base 25 is provided with an LED lighting lamp 26. Embodiment 3

[0026] A pneumatic jack also includes a base 25, a bottom section 29, a plurality of intermediate sections 2, a top section 1, a piston 30 and a center hole piston 6. The bottom section 29, the plurality of intermediate sections 2, the top section 1 and a telescopic sleeve which are fixedly and sealedly connected to the base 25 form a pneumatic jack body with a closed ejection structure.

[0027] Its main closed ejection structure is composed of a piston with double sealing, including a dynamic sealing ring 3 sleeved on the piston 30 and the middle hole piston 6, and a gas bowl 4 pressed on the bottom surface of the piston 30 and the middle hole piston 6 by a pressure ring 7, as well as a base 25 and a bottom section 29, a plurality of intermediate sections 2 and the middle hole piston 6, which are all sealed with a static sealing ring 5 and fastened with screws 28.

[0028] The air pump 40 is fixed to the outside of the bottom section 29 of the air jack body by a cable tie 41. The two are independent structures. The air pump interface 9 is connected to the air nozzle 42 fixed on the base 25 through the inflation tube 31. The air nozzle 42 is connected to the cavity body through the air inlet channel 8. The port of the air inlet channel 8 in the cavity body is provided with a check valve 27. The base 25 is provided with an exhaust button 43 with a rubber pad, which is tightened by a spring 34 and is connected to the cavity body through the exhaust channel (16). Embodiment 4

[0029] A pneumatic jack also includes a base 25, a bottom section 29, a plurality of intermediate sections 2, a top section 1, and a rubber liner 39. The bottom section 29, the plurality of intermediate sections 2, the top section 1, and a retractable sleeve that are mutually connected to the base 25 form a closed ejection structure of the pneumatic jack body.

[0030] The main body of the closed ejection structure is composed of a bottom section 29, a plurality of intermediate sections 2, a top section 1, and a retractable pull-rod antenna-type sleeve with a rubber liner 39. The bottom of the rubber liner 39 with a sealing ring is pressed into the bottom surface of the bottom section 29 and the groove provided on the base 25, and is fastened and sealed by screws 28 passing through screw holes 37. The bottom inner sides of the bottom of the bottom section 29 and the plurality of intermediate sections 2 are provided with limiting protrusions 44.

[0031] The air pump 40 is fixed to the outside of the bottom section 29 of the air jack body by a cable tie 41. The two are independent structures. The air pump interface 9 is connected to the air nozzle 42 fixed on the base 25 through the inflation tube 31. The air nozzle 42 is connected to the cavity body through the air inlet channel 8. The port of the air inlet channel 8 in the cavity body is provided with a check valve 27. The base 25 is provided with an exhaust button 43 with a rubber pad, which is tightened by a spring 34 and is connected to the cavity body through the exhaust channel (16).

[0032] When in use, just plug in the 12V power supply of the cigarette lighter and turn on the air pump switch 45 to generate air pressure in the micro air pump working air pressure jack. The top section 1 and several middle sections 2 are pushed out at the same time and can be raised to the required height at one time, without manual operation, saving time and effort. At night, the LED lighting 26 around the lighting switch 45 can also be turned on to provide lighting. If the tire pressure is found to be insufficient during driving, the conversion switch 11 can be turned to the air pump position, and the air pressure jack can be used to inflate the tire. The inflation situation can be controlled by the built-in digital pressure gauge 32. For vehicles equipped with small air pumps or special large occasions, the third and fourth embodiments can be used to select a single air pressure jack.

[0033] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A pneumatic dry jack, comprising a bottom section with a base, an intermediate section and a spiral top section that can be swung out, characterized in that: The pneumatic jack body comprises a base, a bottom section, several middle sections, a top section, a piston, a middle-hole piston, a rubber liner, a bottom section fixedly and sealedly connected to the base, several middle sections, a top section, and a telescopic sleeve that is mutually connected as a rod antenna to form a closed ejection structure. The main body of the closed ejection structure is composed of a piston with a dynamic seal ring sleeved on the piston and the middle hole piston, a piston with a double seal of a gas bowl pressed on the piston and the bottom surface of the middle hole piston by a pressure ring, and a base and a bottom section, several intermediate sections and the middle hole piston are all sealed with static seal rings and fastened with screws. The main body of the closed ejection structure is composed of a bottom section, several middle sections, a top section, and a retractable rod antenna sleeve with a rubber liner. The bottom of the rubber liner with a sealing ring is pressed into the bottom surface of the bottom section and the groove on the base, and is sealed and connected with screws. The bottom inner side of the bottom of the bottom section and several middle sections are all provided with limiting convex heads. The micro air pump is composed of a motor and a worm gear, a connecting rod, and a piston in a cylinder, which are movably connected in sequence and placed in a base. The air outlet of the cylinder is connected to a digital pressure gauge and a conversion seat fixed on the outside of the base through a hose. The conversion seat is sealed and rotatably connected to the open end of the conversion conduit. The outer sleeve of the conversion conduit is provided with a sealing rubber sleeve corresponding to the three holes of the filling and exhaust holes, the exhaust holes, and the air inlet holes, and is arranged in the long hole of the base, and is supported in the annular groove on the conversion conduit by a top wire spring. The air pump interface fixed on the base is connected or disconnected with the conversion seat through the filling channel and the filling and exhaust holes on the conversion conduit. One end of the exhaust channel is connected with the cavity body, and the other end is connected with the exhaust hole outside the base. The filling and exhaust channel and the exhaust hole are connected or disconnected with the conversion through the filling and exhaust holes in the middle. A check valve is provided at one end of the intake channel and the port connected with the cavity body, and the other end is connected with the intake hole. The filling and exhaust channel and the conversion seat are connected or disconnected with the conversion. The blind end of the conversion conduit is fixedly connected with the knob. The air pump is fixed to the outside of the bottom section of the air jack body by a cable tie. The two are independent structures. The air pump interface is connected to the air nozzle fixed on the base through an inflation tube. The air nozzle is connected to the cavity body through an air inlet channel. A check valve is provided at the port of the air inlet channel in the cavity body. An exhaust button with a rubber pad is provided on the base, which is tightened by a spring and is connected to the cavity body through an exhaust channel. There are LED lights on the circumference of the base. The conversion device connected to the knob adopts a ceramic valve core structure.

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