阅读说明：本技术 一种恒定车胎胎压的轮毂 (Wheel hub with constant tire pressure ) 是由 魏凤莲 于 2021-01-13 设计创作，主要内容包括：本发明公开了一种恒定车胎胎压的轮毂,包括轮毂,所述轮毂后侧端面上设有开口向后的刹车板放置腔,所述刹车板放置腔前侧内壁上贯通设有连接通孔,所述轮毂远离所述刹车板放置腔中心一侧的环形端面上设有开口远离所述刹车板放置腔中心的轮胎槽,所述轮胎槽内装配有车胎；本发明在轮毂内部设有储气腔,利用轮毂的高强度储存高压气体,使得轮胎在胎压不足时自动对轮胎进行补气,补足胎压,使得车辆在行驶尤其是长途行驶时保证车辆的安全,在充气完成时自动弹出充气阀,保证了轮胎在充气时轮胎胎压以及储气腔压力的正常,防止轮胎过充导致轮胎以及轮毂的磨损。(The invention discloses a wheel hub with constant tire pressure, which comprises a wheel hub, wherein a brake plate placing cavity with a backward opening is arranged on the end surface of the rear side of the wheel hub, a connecting through hole is arranged on the inner wall of the front side of the brake plate placing cavity in a through manner, a tire groove with an opening far away from the center of the brake plate placing cavity is arranged on the annular end surface of one side of the wheel hub far away from the center of the brake plate placing cavity, and a tire is assembled in the tire groove; the air storage cavity is arranged in the hub, high-strength high-pressure air is stored by the aid of the high-strength high-pressure air of the hub, so that air is automatically supplied to the tire when the tire pressure is insufficient, the tire pressure is replenished, the safety of a vehicle is guaranteed when the vehicle runs, particularly a long-distance vehicle runs, the inflation valve is automatically popped up when inflation is finished, the normal tire pressure and the normal air storage cavity pressure of the tire are guaranteed when the tire is inflated, and the tire and the hub are prevented from being worn due to over-inflation of the tire.)

1. The utility model provides a wheel hub of invariable tire pressure, includes wheel hub, its characterized in that: a brake plate placing cavity with a backward opening is formed in the end face of the rear side of the hub, a connecting through hole is formed in the inner wall of the front side of the brake plate placing cavity in a through mode, a tire groove with an opening far away from the center of the brake plate placing cavity is formed in the annular end face of the hub far away from the center of the brake plate placing cavity, a tire is assembled in the tire groove, a gas storage cavity located on the left side of the brake plate placing cavity and a rack plate sliding cavity located on the right side of the brake plate placing cavity are formed in the hub, and an air pressure cavity with an upward opening is formed in the end face of the tire groove far away from the center of the brake plate; the air storage cavity is internally provided with an air pressure push plate in a sliding manner, the left end face of the air pressure push plate is fixedly provided with an air pressure push plate spring fixedly connected with the inner wall of the air storage cavity, the rack plate sliding cavity is internally provided with a rack plate in a sliding manner, a through hole is communicated between the air storage cavity and the rack plate sliding cavity, the left end face of the air pressure push plate is fixedly provided with an arc-shaped arc plate fixedly connected with the left end face of the rack plate, the arc plate penetrates through the through hole and is connected with the through hole in a sliding fit manner, the end face of the arc plate, which is far away from the center side of the brake plate placing cavity, is fixedly provided with arc plate meshing teeth, the top wall in the through hole is provided with a first ratchet cavity with a downward opening, the front inner wall and the rear wall of the first ratchet cavity are rotatably provided with a first ratchet shaft extending backwards, and the, be equipped with chamber with higher speed on the first ratchet chamber rear side inner wall, first ratchet axle stretches into fixed inside engagement gear that is equipped with in the part of intracavity with higher speed, be equipped with magnetism on the chamber rear side inner wall with higher speed and feel the chamber, it is equipped with the coil shaft that extends forward to rotate on the inner wall around the magnetism feels the chamber, the fixed coil that is equipped with the longitudinal symmetry on the coil shaft, all fixed being equipped with the permanent magnet on the inner wall about the magnetism feels the chamber, the coil shaft stretches into fixed being equipped with in the part of intracavity with higher speed with inside engagement gear engaged with drive gear, fixed being equipped with on the chamber rear side inner wall with magnetism feels the signal transmitter who is connected with vehicle signal cooperation.

2. A constant tire pressure hub as claimed in claim 1, wherein: the rack plate slides on the intracavity wall fixed be equipped with rack plate matched with signal block, be equipped with the second ratchet chamber that the opening is decurrent on the rack plate slides the intracavity roof, it is equipped with the transmission shaft to rotate on the inner wall around the second ratchet chamber, fixed be equipped with on the transmission shaft with rack plate matched with second ratchet and be located the first winding wheel of second ratchet rear side, first winding takes turns to fixed winding and has first stay cord, rack plate slides the intracavity and slides and is equipped with the compression plate, fixed be equipped with on the compression plate left end face with rack plate slides intracavity wall fixed connection's compression leaf spring, the compression plate is close to fixedly connected with second stay cord on the terminal surface of chamber center one side is placed to the brake block.

3. A constant tire pressure hub as claimed in claim 1, wherein: the air pressure intracavity slides and is equipped with the air pressure piston, fixed be equipped with on the air pressure piston bottom end face with air pressure intracavity diapire fixed connection's piston spring, be equipped with the ascending rack chamber of opening on the air pressure intracavity diapire, the rack intracavity slide be equipped with air pressure piston bottom end face fixed connection's long rack, fixedly connected with third stay cord on the long rack left side terminal surface, be equipped with opening third ratchet chamber left on the rack chamber right side inner wall, it is equipped with second ratchet axle to rotate on the inner wall around the third ratchet chamber, the epaxial fixed be equipped with of second ratchet with long rack matched with third ratchet and be located the second of third ratchet rear side is twined the wheel, fixed winding has the fourth stay cord on the second twines the wheel.

4. A constant tire pressure hub as claimed in claim 1, wherein: the inner wall of the air storage cavity close to one side of the center of the brake plate placing cavity is provided with a valve inside bayonet communicated with the brake plate placing cavity in a through way, a valve core extending upwards and downwards is fixedly arranged in the valve core clamping opening, a vent hole is arranged in the valve core in a penetrating way, a one-way valve is fixedly arranged in the vent hole, fixing blocks which are bilaterally symmetrical are fixedly arranged on the part positioned in the brake plate placing cavity, the top end surface of the fixed block is provided with a push block chute with an upward opening, a push block is arranged in the push block chute in a sliding way, a push block spring fixedly connected with the inner bottom wall of the push block sliding groove is fixedly arranged on the end surface of the bottom of the push block, and the right end face of the push block is fixedly connected with the second pull rope which is far away from the compression plate and penetrates through the rack plate sliding cavity to be close to the inner wall of one side of the center of the brake plate placing cavity and the other end of the right inner wall of the push block sliding groove.

5. A constant tire pressure hub as claimed in claim 1, wherein: the inner wall of one side of the air storage cavity, which is far away from the center of the brake plate placing cavity, is provided with a ventilation channel communicated with the tire groove in a through manner, the inner wall of the right side of the ventilation channel is provided with a block cutting chute with a leftward opening, a block cutting chute is arranged in the block cutting chute in a sliding manner, the end face of the right side of the block cutting chute is fixedly provided with a block cutting spring fixedly connected with the inner wall of the right side of the block cutting chute, the end face of the right side of the block cutting chute is fixedly connected with a first pull rope which is far away from the first winding wheel and penetrates through the top wall in the second ratchet cavity and the other end of the inner wall of the right side of the block cutting chute, the end face of the right side of the block cutting chute is fixedly connected with a fourth pull rope which is far away from the second winding wheel and penetrates through the inner bottom wall, the fixture block is arranged in the fixture block sliding groove in a sliding mode, a fixture block spring fixedly connected with the bottom wall in the fixture block sliding groove is fixedly arranged on the end face of the bottom of the fixture block, and the third pull rope is fixedly connected to the end face of the bottom of the fixture block and is far away from the long rack and penetrates through the inner wall of the left side of the rack cavity and the other end of the inner bottom wall of the fixture block sliding groove.

6. A constant tire pressure hub as claimed in claim 1, wherein: the signal emitter is electrically connected with the coil through a circuit, the coil charges the signal emitter when rotating in the magnetic induction cavity, and the signal emitter gives an alarm to a vehicle host computer when the rack plate is abutted with the signal block.

Technical Field

The invention relates to the field of vehicle tires, in particular to a hub with constant tire pressure of a vehicle tire.

Background

The hub is a rotating part of a wheel core of which the inner profile steel of the tire is connected through a stand column, namely a metal part which supports the center of the tire and is arranged on a shaft, and is an important supporting part of a vehicle.

At present, most vehicles use the combination of an inflatable rubber tire and a hub to facilitate the running of the vehicles, and the tire is over-inflated during inflation to cause excessive abrasion of tire pressure and insufficient tire pressure after long-time use, thereby causing various potential safety hazards.

Disclosure of Invention

The invention aims to provide a hub with constant tire pressure, and solves the problems.

The invention relates to a wheel hub with constant tire pressure of a tire, which comprises a wheel hub, wherein a brake plate placing cavity with a backward opening is arranged on the end surface of the rear side of the wheel hub, a connecting through hole is arranged on the inner wall of the front side of the brake plate placing cavity in a through manner, a tire groove with an opening far away from the center of the brake plate placing cavity is arranged on the annular end surface of the wheel hub far away from the center of the brake plate placing cavity, the tire is assembled in the tire groove, a gas storage cavity positioned on the left side of the brake plate placing cavity and a rack plate sliding cavity positioned on the right side of the brake plate placing cavity are arranged in the wheel hub, a pneumatic cavity with an upward opening is arranged on the end surface of the tire groove far away from the center of the brake plate placing cavity, a pneumatic push plate is arranged in the gas storage cavity in a sliding manner, a pneumatic push plate spring fixedly connected with the inner wall, the air storage cavity is communicated with the rack plate sliding cavity through a through hole, an arc-shaped arc plate fixedly connected with the rack plate left side end face is fixedly arranged on the air pressure push plate left side end face, the arc plate penetrates through the through hole and is connected with the through hole in a sliding fit manner, arc plate meshing teeth are fixedly arranged on the end face of one side, away from the brake plate placing cavity center, of the arc plate, a first ratchet cavity with a downward opening is arranged on the inner top wall of the through hole, a first ratchet shaft extending backwards is rotatably arranged on the front inner wall and the rear inner wall of the first ratchet cavity, a first ratchet wheel meshed with the arc plate meshing teeth is fixedly arranged on the first ratchet shaft, an accelerating cavity is arranged on the inner wall of the rear side of the first ratchet cavity, an inner meshing gear is fixedly arranged on the part, extending into the accelerating cavity, a magnetic sensing cavity is arranged on the inner wall of the rear side of the accelerating cavity, and a coil shaft extending forwards is rotatably arranged on the front inner wall and the, the automobile acceleration sensor is characterized in that coils which are symmetrical up and down are fixedly arranged on the coil shaft, permanent magnets are fixedly arranged on the upper inner wall and the lower inner wall of the magnetic induction cavity, transmission gears meshed with the internal gear are fixedly arranged on the part, extending into the acceleration cavity, of the coil shaft, and a signal transmitter connected with a vehicle signal in a matched mode is fixedly arranged on the inner wall of the rear side of the magnetic induction cavity.

Further, rack board slides on the intracavity wall fixed be equipped with rack board matched with signal block, be equipped with the second ratchet chamber that the opening is decurrent on the rack board slides the intracavity roof, it is equipped with the transmission shaft to rotate on the inner wall around the second ratchet chamber, fixedly on the transmission shaft be equipped with rack board matched with second ratchet and be located the first winding wheel of second ratchet rear side, fixed winding has first stay cord on the first winding wheel, rack board slides the intracavity and slides and is equipped with the compression board, be fixed on the compression board left end face be equipped with rack board slides intracavity wall fixed connection's compression board spring, the compression board is close to fixedly connected with second stay cord on the terminal surface of chamber center one side is placed to the brake block.

Further, it is equipped with the air pressure piston to slide in the air pressure chamber, fixed be equipped with on the terminal surface of air pressure piston bottom fixed connection's piston spring, be equipped with the ascending rack chamber of opening on the terminal wall of air pressure chamber, the rack intracavity slide be equipped with air pressure piston bottom terminal surface fixed connection's long rack, fixedly connected with third stay cord on the terminal surface of long rack left side, be equipped with the third ratchet chamber of opening left on the inner wall of rack chamber right side, it is equipped with the second ratchet axle to rotate on the inner wall around the third ratchet chamber, the epaxial fixed be equipped with of second ratchet with long rack matched with third ratchet and be located the second of third ratchet rear side is twined the wheel, the last fixed winding of second twine the wheel has the fourth stay cord.

Furthermore, a valve inside bayonet communicated with the brake plate placing cavity is arranged on the inner wall of the air storage cavity close to one side of the center of the brake plate placing cavity in a penetrating way, a valve core extending upwards and downwards is fixedly arranged in the valve core clamping opening, a vent hole is arranged in the valve core in a penetrating way, a one-way valve is fixedly arranged in the vent hole, fixing blocks which are bilaterally symmetrical are fixedly arranged on the part positioned in the brake plate placing cavity, the top end surface of the fixed block is provided with a push block chute with an upward opening, a push block is arranged in the push block chute in a sliding way, a push block spring fixedly connected with the inner bottom wall of the push block sliding groove is fixedly arranged on the end surface of the bottom of the push block, and the right end face of the push block is fixedly connected with the second pull rope which is far away from the compression plate and penetrates through the rack plate sliding cavity to be close to the inner wall of one side of the center of the brake plate placing cavity and the other end of the right inner wall of the push block sliding groove.

Furthermore, an air channel communicated with the tire groove is arranged on the inner wall of one side of the air storage cavity far away from the center of the brake plate placing cavity in a through mode, a block blocking chute with a leftward opening is arranged on the inner wall of the right side of the air channel, a blocking block is arranged in the blocking chute in a sliding mode, a blocking block spring fixedly connected with the inner wall of the right side of the blocking block chute is fixedly arranged on the end face of the right side of the blocking block, the first pull rope is fixedly connected onto the end face of the right side of the blocking block, the first pull rope is far away from the first winding wheel and penetrates through the top wall in the second ratchet cavity and the other end of the inner wall of the right side of the blocking block chute, the fourth pull rope is fixedly connected onto the end face of the right side of the blocking block, the second pull rope is far away from the second winding wheel and penetrates through the inner bottom wall of the air, the fixture block is arranged in the fixture block sliding groove in a sliding mode, a fixture block spring fixedly connected with the bottom wall in the fixture block sliding groove is fixedly arranged on the end face of the bottom of the fixture block, and the third pull rope is fixedly connected to the end face of the bottom of the fixture block and is far away from the long rack and penetrates through the inner wall of the left side of the rack cavity and the other end of the inner bottom wall of the fixture block sliding groove.

Furthermore, the signal emitter is electrically connected with the coil through a circuit, the coil charges the signal emitter when rotating in the magnetic induction cavity, and the signal emitter gives an alarm to a vehicle host computer when the rack plate is abutted with the signal block.

The invention has the beneficial effects that: the invention has simple structure and convenient operation, the air storage cavity is arranged in the hub, and high-strength air is stored by using the high strength of the hub, so that the tire can be automatically supplemented with air when the tire pressure is insufficient, the safety of the vehicle is ensured when the vehicle runs, particularly for long distance running, the inflation valve is automatically popped out when the inflation is finished, the normal tire pressure and air storage cavity pressure of the tire are ensured when the tire is inflated, and the abrasion of the tire and the hub caused by the over-inflation of the tire is prevented.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic left sectional structural view of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram at B-B in FIG. 1 according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram at C-C in FIG. 1 according to an embodiment of the present invention;

FIG. 6 is an enlarged schematic view of the structure at D-D in FIG. 1 according to an embodiment of the present invention;

fig. 7 is an enlarged schematic structural diagram at E in fig. 1 according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-7, wherein for ease of description the orientations described below are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Combine figures 1-7 a wheel hub of invariable tire pressure, including wheel hub 10, be equipped with the brake block that the opening backward placed chamber 34 on the wheel hub 10 rear end face, the brake block is placed and is link up on the inner wall of chamber 34 front side and be equipped with connect the via hole 35, wheel hub 10 keeps away from the brake block is placed and is equipped with the opening on the ring-shaped terminal surface of chamber 34 center one side and keeps away from the brake block places the tire groove 32 at chamber 34 center, be equipped with tire 11 in the tire groove 32, be equipped with in wheel hub 10 and be located the brake block places left gas storage chamber 33 of chamber 34 and is located the rack plate sliding chamber 27 on chamber 34 right side is placed to the brake block, tire groove 32 keeps away from the brake block is placed and is equipped with the ascending atmospheric pressure chamber 12 of opening on the terminal surface of chamber 34 center one side, it is equipped with atmospheric pressure push pedal 19 to slide in the gas storage chamber 33, the atmospheric pressure push pedal 19 left side terminal, the rack plate slides and is equipped with rack plate 25 in the chamber 27, the intercommunication has through-hole 23 between the gas storage chamber 33 and the rack plate slides the chamber 27, fixed be equipped with on the left side terminal surface of atmospheric pressure push pedal 19 with rack plate 25 left side terminal surface fixed connection's the curved arc 22 that becomes, arc 22 runs through-hole 23 and sliding fit connects with it, arc 22 keeps away from fixed being equipped with arc meshing tooth 21 on the terminal surface of brake plate placing chamber 34 center one side, be equipped with the first ratchet chamber 55 that the opening is decurrent on the roof in the through-hole 23, rotate on the inner wall around the first ratchet chamber 55 and be equipped with the first ratchet shaft 57 that extends backward, fixed be equipped with on the first ratchet shaft 57 with the first ratchet 56 that arc meshing tooth 21 engaged with mutually, be equipped with chamber 52 with higher speed on the inner wall of first ratchet chamber 55 rear side, first ratchet shaft 57 stretches into fixed being equipped with inside engagement gear 54 on the part in chamber 52 with higher speed, be equipped with magnetism on the cavity 52 rear side inner wall with higher speed and feel the chamber 47, it is equipped with the coil axis 48 that extends forward to rotate on the inner wall around magnetism feels the chamber 47, the fixed coil 51 that is equipped with longitudinal symmetry on the coil axis 48, all be fixed on the inner wall about magnetism feels the chamber 47 and be equipped with permanent magnet 50, the coil axis 48 stretches into fixed being equipped with on the part in the chamber 52 with higher speed with the transmission gear 53 that ring gear 54 engaged with mutually, it is equipped with the signal transmitter 49 of being connected with vehicle signal cooperation to fix on the inner wall of magnetism feels the chamber 47 rear side.

Beneficially, fixed be equipped with on the rack board slides 27 inner walls of chamber with rack board 25 matched with signal piece 24, be equipped with the second ratchet chamber 26 that open side down on the roof in rack board slides 27, it is equipped with transmission shaft 44 to rotate on the inner wall around the second ratchet chamber 26, fixed be equipped with on the transmission shaft 44 with rack board 25 matched with second ratchet 46 and be located the first winding wheel 45 of second ratchet 46 rear side, fixed winding has first stay cord 43 on the first winding wheel 45, it is equipped with pressure receiving plate 29 to slide in the chamber 27 to slide in the rack board slides, be equipped with on the terminal surface of pressure receiving plate 29 left side fixed connection with rack board slides 27 inner walls of chamber fixed connection's pressure receiving plate spring 30, pressure receiving plate 29 is close to fixedly connected with second stay cord 28 on the terminal surface of chamber 34 center one side is placed to the brake block.

Beneficially, an air pressure piston 13 is slidably disposed in the air pressure cavity 12, a piston spring 15 fixedly connected to the bottom wall of the air pressure cavity 12 is fixedly disposed on the bottom end face of the air pressure piston 13, a rack cavity 17 with an upward opening is disposed on the bottom wall of the air pressure cavity 12, a long rack 14 fixedly connected to the bottom end face of the air pressure piston 13 is slidably disposed in the rack cavity 17, a third pull rope 16 is fixedly connected to the left end face of the long rack 14, a third ratchet cavity 18 with a leftward opening is disposed on the right inner wall of the rack cavity 17, a second ratchet shaft 59 is rotatably disposed on the front and rear inner walls of the third ratchet cavity 18, a third ratchet 61 matched with the long rack 14 and a second winding wheel 58 located behind the third ratchet 61 are fixedly disposed on the second ratchet shaft 59, and a fourth pull rope 60 is fixedly wound on the second winding wheel 58.

Beneficially, the air storage cavity 33 is close to the inner wall of the brake pedal placing cavity 34 on one side of the center, is provided with a valve core bayonet 39 communicated with the brake pedal placing cavity 34 in a penetrating manner, the valve core 37 extending to the upper side and the lower side is arranged in the valve core 39 in a fixed manner, the valve core 37 is provided with a vent hole 38 in a penetrating manner, the vent hole 38 is provided with a one-way valve 36 in a fixed manner, the brake pedal placing cavity 34 is provided with a fixed block 63 fixedly provided with bilateral symmetry on the portion, the top end face of the fixed block 63 is provided with a push block sliding groove 65 with an upward opening, a push block 62 is arranged in the push block sliding groove 65 in a sliding manner, the bottom end face of the push block 62 is fixedly provided with a push block spring 64 fixedly connected with the inner wall of the push block sliding groove 65, the second pull rope 28 is fixedly connected to the right side end face of the push block 62, the rack plate sliding cavity 27 is close to the inner wall of the brake pedal placing And the other end of the same.

Advantageously, an air channel 42 communicating with the tire groove 32 is penetratingly disposed on an inner wall of one side of the air storage cavity 33 away from the center of the brake pad placement cavity 34, a block sliding groove 41 with a leftward opening is disposed on an inner wall of a right side of the air channel 42, a block 40 is slidably disposed in the block sliding groove 41, a block spring 69 fixedly connected with the inner wall of the right side of the block sliding groove 41 is fixedly disposed on a right side end face of the block 40, the first pull rope 43 is fixedly connected to the right side end face of the block 40, is away from the first winding wheel 45, and penetrates through an inner top wall of the second ratchet cavity 26 and the other end of the inner wall of the right side of the block sliding groove 41, the fourth pull rope 60 is fixedly connected to the right side end face of the block 40, is away from the second winding wheel 58, and penetrates through an inner bottom wall of the air pressure push plate 19 and the other end of the inner wall of the right side of, a fixture block sliding groove 67 with an upward opening is formed in the inner bottom wall of the block cutting sliding groove 41, a fixture block 68 is slidably arranged in the fixture block sliding groove 67, a fixture block spring 66 fixedly connected with the inner bottom wall of the fixture block sliding groove 67 is fixedly arranged on the bottom end face of the fixture block 68, and the third pull rope 16 is fixedly connected to the bottom end face of the fixture block 68, is far away from the long rack 14 and penetrates through the inner wall of the left side of the rack cavity 17 and the other end of the inner bottom wall of the fixture block sliding groove 67.

Advantageously, the signal emitter 49 is electrically connected with the coil 51 through a circuit, the coil 51 charges the signal emitter 49 when rotating in the magnetic induction cavity 47, and the signal emitter 49 gives an alarm to a host computer of the vehicle when the rack plate 25 is abutted to the signal block 24.

In an initial state, the pushing block 62 is contracted into the pushing block sliding groove 65 under the action of the pushing block spring 64, the blocking block 40 is located at a left limit position under the action of the blocking block spring 69 to block the ventilation channel 42, and the blocking block 68 is located at an upper limit position under the action of the blocking block spring 66 to extend into the blocking block sliding groove 41.

During inflation, the inflation valve is inserted on the valve core 37, the inflation valve abuts against the push block 62, the air pump is started to inflate the air storage cavity 33 through the one-way valve 36 and the vent hole 38, the air pressure in the air storage cavity 33 is increased, the air pressure push plate 19 is pushed to move upwards to compress the air pressure push plate spring 20, the air pressure push plate 19 moves upwards to drive the rack plate 25 to move downwards through the arc plate 22, the rack plate 25 moves downwards to enable the rack plate 25 to be meshed with the second ratchet wheel 46 and drive the second ratchet wheel 46 to rotate, the second ratchet wheel 46 rotates to rotate with the first winding wheel 45 coaxial with the second ratchet wheel, the first winding wheel 45 rotates to strain the first pull rope 43, the cut-off block 40 moves rightwards to the right limit position, the clamping block 68 abuts against the left end face of the cut-off block 40 under the action of the clamping block spring 66, so that the air flow inflates the tire inner cavity through the vent channel 42, the air pressure in the inner cavity of the tire 11 is increased to, the air pressure piston 13 moves downwards to tighten the third pull rope 16, when the air pressure piston 13 and the long rack 14 move to the lower limit position, the third pull rope 16 is tightened to enable the clamping block 68 to move downwards to be separated from the abutting joint with the cut-off block 40, so that the cut-off block 40 resets and cuts off the ventilation channel 42 under the action of the cut-off block spring 69, the air storage cavity 33 is continuously pressurized, the rack plate 25 is enabled to abut against the pressure receiving plate 29, the rack plate 25 pushes the pressure receiving plate 29 to tighten the second pull rope 28, the push block 62 moves upwards to pull open the inflation valve, and inflation is finished;

when the air pressure in the inner cavity of the tire 11 is reduced, the air pressure piston 13 moves upwards under the action of the air pressure and the piston spring 15 to drive the long rack 14 to move upwards to be meshed with the third ratchet wheel 61, so that the third ratchet wheel 61 is driven to rotate to tighten the fourth pull rope 60, the cut-off block 40 moves rightwards to prevent the cut-off ventilation channel 42 from being cut off, the air pressure push plate 19 resets under the action of the air pressure push plate spring 20 to extrude the air in the air storage cavity 33 to enter the inner cavity of the tire 11 to complete air supplement, after the air supplement is completed, the air pressure piston 13 moves downwards to the lower limit position, and the cut-off block 40 resets to cut off the ventilation channel;

when air is supplied, the air pressure push plate 19 is reset to drive the rack plate 25 to reset, so that the arc-shaped plate meshing teeth 21 drive the first ratchet wheel 56 meshed with the arc-shaped plate to rotate, the first ratchet wheel 56 rotates to drive the inner meshing gear 54 coaxial with the first ratchet wheel to rotate, so that the transmission gear 53 meshed with the inner meshing gear 54 is driven to rotate, the transmission gear 53 rotates to drive the coil 51 coaxial with the transmission gear to rotate to cut magnetic induction lines, and the signal transmitter 49 is charged;

when the rack plate 25 is reset to abut against the signal block 24, the signal emitter 49 gives an alarm to the host computer of the vehicle to remind the vehicle owner to charge the vehicle as soon as possible.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.