阅读说明：本技术 一种防过冲的自行车轮胎自动打气装置 (Anti-overshoot automatic inflating device for bicycle tire ) 是由 唐杰 于 2020-08-13 设计创作，主要内容包括：本发明公开了一种防过冲的自行车轮胎自动打气装置,包括打气机体,所述打气机体内设有开口向上的滑动槽,所述滑动槽内设有定位装置,所述定位装置包括与所述滑动槽底壁滑动连接的定位块,所述定位块内开设有定位槽,所述定位槽前后两侧对称开设有与所述定位槽连通的打气孔,所述打气孔内滑动连接有打气块,所述打气块下侧开设有与所述定位槽连通的齿条槽,所述齿条槽内滑动连接有滑动齿条,当轮胎转动时,前后两侧所述滑动齿条能让钢丝通过,而所述滑动齿条在所述齿条槽的最大滑动距离不能让气嘴通过。(The invention discloses an overshoot-proof automatic inflating device for a bicycle tire, which comprises an inflating machine body, wherein a sliding groove with an upward opening is arranged in the inflating machine body, a positioning device is arranged in the sliding groove and comprises a positioning block in sliding connection with the bottom wall of the sliding groove, a positioning groove is formed in the positioning block, inflating holes communicated with the positioning groove are symmetrically formed in the front side and the rear side of the positioning groove, an inflating block is connected in the inflating holes in a sliding mode, a rack groove communicated with the positioning groove is formed in the lower side of the inflating block, a sliding rack is connected in the rack groove in a sliding mode, when the tire rotates, the sliding racks on the front side and the rear side can pass through steel wires, and the maximum sliding distance of the sliding rack in the rack groove cannot allow an air tap to pass through.)

1. The utility model provides an automatic inflating device of bicycle tire of preventing overshooting, includes the organism of inflating, its characterized in that: the tyre inflating machine is characterized in that a sliding groove with an upward opening is arranged in the inflating machine body, a positioning device is arranged in the sliding groove, the positioning device comprises a positioning block which is in sliding connection with the bottom wall of the sliding groove, a positioning groove is formed in the positioning block, inflating holes communicated with the positioning groove are symmetrically formed in the front side and the rear side of the positioning groove, an inflating block is connected in the inflating holes in a sliding manner, a rack groove communicated with the positioning groove is formed in the lower side of the inflating block, a sliding rack is connected in the rack groove in a sliding manner, when a tyre rotates, the sliding racks on the front side and the rear side can allow a steel wire to pass through, the sliding rack cannot allow an air nozzle to pass through at the maximum sliding distance of the rack groove, the sliding rack moves to drive the inflating block to approach each other so as to clamp the air nozzle to inflate the tyre, the inflation device comprises a transmission groove arranged on the left side of the inflation cavity, a bevel gear meshing groove is arranged on the upper side of the transmission groove, the right wall of the upper end of the inflator body is provided with a clamping groove communicated with the outer side of the inflator body, the front side and the rear side of the clamping groove are symmetrically provided with detection grooves, a detection block is connected in the detection groove in a sliding way, a detection spring is connected between the detection block and the wall body of the detection groove, a moving groove with an opening facing to the central end face side of the clamping groove is arranged in the detection block, the clamping block is connected in the moving groove in a sliding way, a compression spring is connected between the clamping block and the compression spring wall body, the spring coefficient of the compression spring is greater than that of the detection spring, after the positioning device finishes positioning, the clamping block can clamp the table top on the left side of the tire, and inflation can be stopped to a certain degree along with the increase of the tire.

2. An anti-overshoot automatic pump up device for a bicycle tire as in claim 1, wherein: the positioning device also comprises a bevel gear rotating groove which is arranged at the upper side of the rack groove and is positioned at the side far away from the central end face direction of the positioning groove, a butting spring is connected between the positioning block and the right wall of the sliding groove, an extension spring is connected between the sliding rack and the wall body of the rack groove, a transmission gear is rotatably matched with the wall body between the rack groove and the bevel gear rotating groove, a connecting screw rod is rotatably matched with the wall body between the bevel gear rotating groove and the inflating hole, the connecting screw rod is connected with a bevel gear pair positioned in the bevel gear rotating groove by the transmission shaft, the connecting screw rod is positioned in the inflating hole and is in threaded connection with the inflating block, the inflating hole is arranged in the inflating block, idle wheels which are rotatably matched with the wall body of the inflating machine body are symmetrically arranged at the left side and the right side of the sliding groove, and, a spline shaft is rotationally matched with a wall body between the bevel gear rotating grooves, a central shaft is rotationally matched with the rear wall of the spline shaft, the central shaft is positioned in the bevel gear rotating grooves and fixedly connected with a friction wheel which can enable the wheel to rotate in a friction mode, the central shaft is positioned in the friction wheel and fixedly connected with a meshing bevel gear which is positioned on the front side of the friction wheel, the spline shaft is positioned in the bevel gear rotating grooves and connected with a rotating bevel gear which can be meshed with the meshing bevel gear in a spline mode, a second groove is formed in the rotating bevel gear, the horizontal part on one side of an oil pipe is installed on the left wall, a third piston push rod which is rotationally connected with the second groove is connected in the oil pipe in a sliding mode, a connecting groove is formed in the upper side of the oil pipe, a permanent magnet which is rotationally connected with the, the oil pipe is characterized in that a connecting spring is connected between the electromagnet and the permanent magnet, the left side of the sliding groove is communicated with the horizontal part of the other side of the oil pipe, and a first piston push rod fixedly connected with the positioning block is connected in the oil pipe in a sliding mode.

3. An anti-overshoot automatic pump up device for a bicycle tire as in claim 1, wherein: the inflating device also comprises a spline bevel gear which is positioned in the bevel gear meshing groove and is in spline connection with the meshing bevel gear, the spline shaft extends leftwards to the tail end of the left side of the spline bevel gear and is in power connection with a power motor embedded in the wall body, the right wall of the bevel gear meshing groove is fixedly provided with a horizontal part at one side of an oil path, a first annular groove is formed in the spline bevel gear, a second piston push rod which is in rotating connection with the first annular groove is in sliding connection in the oil path, the upper side of the oil path is provided with a reset groove, a reset block which is in fixed connection with the second piston push rod is in sliding connection in the reset groove, a reset spring is connected between the reset block and the right wall of the reset groove, the rear wall of the detection groove is provided with the horizontal part at the other side of the oil path, and, the left and right detection blocks are fixedly provided with the horizontal part of the other part of the oil pipe, the oil pipe is internally and slidably connected with a fifth piston push rod fixedly connected with the clamping block, the lower wall of the bevel gear meshing groove is in running fit with a rotating shaft, the upper wall of the transmission groove is in running fit with a one-way shaft, a one-way coupling is connected between the rotating shaft and the one-way shaft, the rotating shaft is a rotating bevel gear which is fixedly connected with the bevel gear meshing groove and can be meshed with the spline bevel gear, the one-way shaft is positioned in the transmission groove and is fixedly connected with a transmission bevel gear, the rear wall of the transmission groove is in running fit with an extension shaft, the extension shaft is positioned in the transmission groove and is fixedly connected with a connection bevel gear meshed with the transmission bevel gear, and the extension shaft is positioned in the transmission groove and is, the limiting pin is fixedly mounted on the front side surface of the rotating wheel, the upper wall body and the lower wall body of the transmission groove are connected with a connecting block in a sliding mode, the connecting block is provided with a limiting groove, the limiting groove is connected with the limiting pin in a sliding mode, a connecting rod fixedly connected with the connecting block is arranged between the transmission groove and the inflating cavity in a sliding mode, and the connecting rod is located in the inflating cavity and fixedly connected with the inflating block.

Technical Field

The invention relates to the technical field of vehicle tires, in particular to an overshoot-proof automatic inflating device for a bicycle tire.

Background

In daily life, a bicycle becomes an indispensable daily vehicle, in daily life, the bicycle needs to be inflated after the tire pressure of the bicycle tire is insufficient, the position of an air tap is manually found during inflation, the inflation is performed manually, the process is complicated, meanwhile, the tire pressure in the bicycle tire cannot be well determined during manual inflation, once the tire pressure overshoots, the tire explosion occurs, economic loss is caused, and the bicycle is unsafe to a human body, so that the invention is very important.

Disclosure of Invention

The invention aims to provide an anti-overshoot automatic inflating device for a bicycle tire, which is used for overcoming the defects in the prior art.

The invention relates to an overshoot-proof automatic inflating device for a bicycle tire, which comprises an inflating machine body, wherein a sliding groove with an upward opening is arranged in the inflating machine body, a positioning device is arranged in the sliding groove and comprises a positioning block connected with the bottom wall of the sliding groove in a sliding manner, a positioning groove is formed in the positioning block, inflating holes communicated with the positioning groove are symmetrically formed in the front side and the rear side of the positioning groove, an inflating block is connected in the inflating holes in a sliding manner, a rack groove communicated with the positioning groove is formed in the lower side of the inflating block, a sliding rack is connected in the rack groove in a sliding manner, when the tire rotates, the sliding racks on the front side and the rear side can pass through a steel wire, the maximum sliding distance of the sliding racks in the rack groove can not pass through an air nozzle, and the sliding racks move to drive the inflating blocks to approach each other so as to clamp the air, an inflating cavity is formed in the lower side of the sliding groove, an inflating device is arranged in the inflating cavity and comprises a transmission groove formed in the left side of the inflating cavity, a bevel gear meshing groove is formed in the upper side of the transmission groove, a clamping groove communicated with the outer side of the inflating machine body is formed in the right wall of the upper end of the inflating machine body, detection grooves are symmetrically formed in the front side and the rear side of the clamping groove, a detection block is connected in the detection groove in a sliding mode, a detection spring is connected between the detection block and the wall body of the detection groove, a moving groove with an opening facing the central end face side of the clamping groove is formed in the detection block, a clamping block is connected in the moving groove in a sliding mode, a compression spring is connected between the clamping block and the wall body of the compression spring, the spring coefficient of the compression spring is larger than that of the detection spring, and after, as the tire grows, the inflation stops to some extent.

On the basis of the technical scheme, the positioning device also comprises a bevel gear rotating groove which is arranged at the upper side of the rack groove and is positioned at the side far away from the central end face direction of the positioning groove, a butting spring is connected between the positioning block and the right wall of the sliding groove, an extension spring is connected between the sliding rack and the wall body of the rack groove, a transmission gear is rotatably matched on the wall body between the rack groove and the bevel gear rotating groove, a connecting screw rod is rotatably matched on the wall body between the bevel gear rotating groove and the inflating hole, the connecting screw rod is connected with a bevel gear pair in the bevel gear rotating groove by a transmission shaft, the connecting screw rod is positioned in the inflating hole and is in threaded connection with the inflating block, the inflating hole is formed in the inflating block, and idle wheels which are rotatably matched with the wall body of the inflating machine body are symmetrically arranged at the left side, a bevel gear rotating groove is formed in the left side of the sliding groove, a spline shaft is rotationally matched with a wall body between the bevel gear rotating grooves, a central shaft is rotationally matched with the rear wall of the spline shaft, the central shaft is positioned in the bevel gear rotating groove and fixedly connected with a friction wheel capable of enabling the wheel to rotate in a friction mode, the central shaft is positioned in the friction wheel and fixedly connected with a meshing bevel gear positioned on the front side of the friction wheel, the spline shaft is positioned in the bevel gear rotating groove and is in splined connection with a rotating bevel gear capable of being meshed with the meshing bevel gear, a second annular groove is formed in the rotating bevel gear, the left wall is provided with a horizontal part on one side of an oil pipe, a third piston push rod rotationally connected with the second annular groove is slidably connected in the oil pipe, a connecting groove is formed in the upper side of the oil pipe, the oil pipe is characterized in that an electromagnet is fixedly mounted on the left wall of the connecting groove, a connecting spring is connected between the electromagnet and the permanent magnet, the left side of the sliding groove is communicated with the horizontal part of the other side of the oil pipe, and a first piston push rod fixedly connected with the positioning block is connected in the oil pipe in a sliding mode.

On the basis of the technical scheme, the inflating device further comprises a spline bevel gear which is positioned in the bevel gear meshing groove and is in splined connection with the meshing bevel gear, the spline shaft extends leftwards to the tail end of the left side of the spline bevel gear and is in power connection with a power motor embedded in the wall body, the right wall of the bevel gear meshing groove is fixedly provided with a horizontal part on one side of an oil path, a first annular groove is formed in the spline bevel gear, a second piston push rod which is in rotating connection with the first annular groove is in sliding connection with the oil path, a reset groove is formed in the upper side of the oil path, a reset block which is in fixed connection with the second piston push rod is in sliding connection with the reset groove, a reset spring is connected between the reset block and the right wall of the reset groove, the horizontal part on the other side of the oil path is installed on the rear wall of the detection groove on, the left and right detection blocks are fixedly provided with the horizontal part of the other part of the oil pipe, the oil pipe is internally and slidably connected with a fifth piston push rod fixedly connected with the clamping block, the lower wall of the bevel gear meshing groove is in running fit with a rotating shaft, the upper wall of the transmission groove is in running fit with a one-way shaft, a one-way coupling is connected between the rotating shaft and the one-way shaft, the rotating shaft is a rotating bevel gear which is fixedly connected with the bevel gear meshing groove and can be meshed with the spline bevel gear, the one-way shaft is positioned in the transmission groove and is fixedly connected with a transmission bevel gear, the rear wall of the transmission groove is in running fit with an extension shaft, the extension shaft is positioned in the transmission groove and is fixedly connected with a connection bevel gear meshed with the transmission bevel gear, and the extension shaft is positioned in the transmission groove and is, the limiting pin is fixedly mounted on the front side surface of the rotating wheel, the upper wall body and the lower wall body of the transmission groove are connected with a connecting block in a sliding mode, the connecting block is provided with a limiting groove, the limiting groove is connected with the limiting pin in a sliding mode, a connecting rod fixedly connected with the connecting block is arranged between the transmission groove and the inflating cavity in a sliding mode, and the connecting rod is located in the inflating cavity and fixedly connected with the inflating block.

The invention has the beneficial effects that: rotate the tire, through the slip rack gap about the steel wire process, the position of air cock can not come the definite air cock through the gap of slip rack about, thereby the piece of inflating behind the definite air cock position can self-holding begin to inflate, presss from both sides tight tire simultaneously, after enough gas was beaten to the tire, can the automatic shutdown inflate to prevent that excessive inflating from and the condition of taking place tire explosion takes place.

Drawings

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

FIG. 1 is a schematic view of the overall structure of an anti-overshoot automatic pump for a bicycle tire;

FIG. 2 is a schematic view of the structure in the direction A-A in FIG. 1;

FIG. 3 is a schematic view of the structure in the direction B-B in FIG. 1;

fig. 4 is an enlarged view of a partial structure at C in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: 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.

Referring to fig. 1 to 4, an automatic inflation device for a bicycle tire with overshoot prevention according to an embodiment of the present invention includes an inflation machine body 38, a sliding groove 37 with an upward opening is provided in the inflation machine body 38, a positioning device is provided in the sliding groove 37, the positioning device includes a positioning block 36 slidably connected to a bottom wall of the sliding groove 37, a positioning groove 61 is provided in the positioning block 36, inflation holes 52 communicating with the positioning groove 61 are symmetrically provided on front and rear sides of the positioning groove 61, an inflation block 53 is slidably connected to the inflation holes 52, a rack groove 59 communicating with the positioning groove 61 is provided on a lower side of the inflation block 53, a sliding rack 60 is slidably connected to the rack groove 59, when the tire rotates, the sliding rack 60 can allow a steel wire to pass through on the front and rear sides, and the maximum sliding distance of the sliding rack 60 in the rack groove 59 cannot allow an air nozzle to pass through, the sliding rack 60 moves to drive the inflating blocks 53 to approach each other so as to clamp the air nozzles for inflating the tire, an inflating cavity 35 is formed in the lower side of the sliding groove 37, an inflating device is arranged in the inflating cavity 35, the inflating device comprises a transmission groove 31 formed in the left side of the inflating cavity 35, a bevel gear meshing groove 20 is formed in the upper side of the transmission groove 31, a clamping groove 68 communicated with the outer side of the inflating machine body 39 is formed in the right wall of the upper end of the inflating machine body 39, detection grooves 67 are symmetrically formed in the front and rear sides of the clamping groove 68, a detection block 71 is slidably connected in the detection groove 67, a detection spring 72 is connected between the detection block 71 and the wall body of the detection groove 67, a moving groove 66 with an opening facing the central end face side of the clamping groove 68 is formed in the detection block 71, a clamping block 62 is slidably connected in the moving groove 66, and a compression spring 65 is connected, the spring coefficient of the compression spring 65 is greater than that of the detection spring 72, when the positioning device is positioned, the clamping block 62 clamps the table top on the left side of the tire, and inflation stops to a certain extent along with the increase of the tire.

In addition, in one embodiment, the positioning device further includes a bevel gear rotating groove 55 opened on the upper side of the rack groove 59 and located on the side far from the center end face direction of the positioning groove 61, an abutting spring 38 is connected between the positioning block 36 and the right wall of the sliding groove 37, an extension spring 58 is connected between the sliding rack 60 and the wall body of the rack groove 59, a transmission gear 57 is rotatably fitted to the wall body between the rack groove 59 and the bevel gear rotating groove 55, a connecting screw 54 is rotatably fitted to the wall body between the bevel gear rotating groove 55 and the gas opening hole 52, the connecting screw 54 is connected with a bevel gear pair in the bevel gear rotating groove 55 of the transmission shaft 56, the connecting screw 54 is internally threaded with the gas opening block 53 in the gas opening hole 52, the gas opening hole 52 is opened in the gas opening block 53, air wheels 69 rotatably fitted to the left and right side walls 39 of the gas opening body are symmetrically arranged on the left and right sides of the sliding groove 37, a bevel gear rotating groove 41 is formed in the left side of the sliding groove 37, a spline shaft 46 is arranged on the wall body between the bevel gear rotating grooves 41 in a rotating fit manner, a center shaft 51 is arranged on the rear wall of the spline shaft 46 in a rotating fit manner, the center shaft 51 is positioned in the bevel gear rotating groove 41 and fixedly connected with a friction wheel 50 capable of enabling the wheel to rotate in a friction manner, the center shaft 51 is positioned in the friction wheel 50 and fixedly connected with a meshing bevel gear 49 positioned on the front side of the friction wheel 50, the spline shaft 46 is positioned in the bevel gear rotating groove 41 and is in spline connection with a rotating bevel gear 48 capable of being meshed with the meshing bevel gear 49, a second ring groove 40 is formed in the rotating bevel gear 48, the horizontal part on one side of the oil pipe 11 is installed on the left wall, a third piston push rod 47 rotationally connected with the second ring groove 40 is connected, a permanent magnet 45 rotatably connected with a third piston push rod 47 is connected in the connecting groove 44 in a sliding manner, an electromagnet 43 is fixedly installed on the left wall of the connecting groove 44, a connecting spring 42 is connected between the electromagnet 43 and the permanent magnet 45, the left side of the sliding groove 37 is communicated with the horizontal part on the other side of the oil pipe 11, a first piston push rod 10 fixedly connected with the positioning block 36 is connected in the oil pipe 11 in a sliding manner, when the positioning block 36 moves rightwards due to the air nozzle, the first piston push rod 10 moves rightwards, so that the permanent magnet 45 drives the third piston push rod 47 to move leftwards, the rotating bevel gear 48 is disengaged from the engaging bevel gear 49, and the friction wheel 50 stops rotating.

In addition, in one embodiment, the inflation device further includes a spline bevel gear 17 in the bevel gear meshing groove 20 and in spline connection with the meshing bevel gear 49, the spline shaft 46 extends leftwards to the left end of the spline bevel gear 17 and is in power connection with a power motor 16 embedded in a wall body, a horizontal part on one side of an oil path 64 is fixedly installed on the right wall of the bevel gear meshing groove 20, a first annular groove 19 is formed in the spline bevel gear 17, a second piston push rod 18 rotatably connected with the first annular groove 19 is connected in the oil path 64 in a sliding manner, a reset groove 13 is formed in the upper side of the oil path 64, a reset block 14 fixedly connected with the second piston push rod 18 is connected in the reset groove 13 in a sliding manner, a reset spring 12 is connected between the reset block 14 and the right wall of the reset groove 13, and a horizontal part on the other side of the oil path 64 is installed on the rear, a fourth piston push rod 63 fixedly connected with the detection block 71 is connected in the oil path 64 in a sliding manner, the left and right detection blocks 71 are fixedly provided with the other horizontal part of the oil pipe 11, the oil pipe 11 is connected in a sliding manner with a fifth piston push rod 70 fixedly connected with the clamping block 62, the lower wall of the bevel gear meshing groove 20 is in rotating fit with a rotating shaft 21, the upper wall of the transmission groove 31 is in rotating fit with a one-way shaft 22, a one-way coupling is connected between the rotating shaft 21 and the one-way shaft 22, the rotating shaft 21 is a rotating bevel gear 15 fixedly connected with the bevel gear meshing groove 20 and capable of meshing with the spline bevel gear 17, the one-way shaft 22 is fixedly connected with a transmission bevel gear 23 in the transmission groove 31, the rear wall of the transmission groove 31 is in rotating fit with an extension shaft 28, the extension shaft 28 is fixedly connected with a connection bevel gear 24 meshed with the transmission bevel gear 23 in the transmission, the extension shaft 28 is positioned in the transmission groove 31 and fixedly connected with a rotating wheel 29 positioned in front of the connecting bevel gear 24, a limiting pin 73 is fixedly installed on the front side surface of the rotating wheel 29, the upper and lower wall bodies of the transmission groove 31 are slidably connected with a connecting block 25, the connecting block 25 is provided with a limiting groove 26, the limiting groove 26 is slidably connected with the limiting pin 73, a connecting rod 33 fixedly connected with the connecting block 25 is arranged in the wall body sliding direction between the transmission groove 31 and the inflating cavity 35, the connecting rod 33 is positioned in the inflating cavity 35 and fixedly connected with an inflating block 34, when the tire inflates, the detection block 71 moves, so that the spline bevel gear 17 moves leftwards, the spline bevel gear 17 is disengaged from the rotating bevel gear 15, and inflating is stopped.

In the initial state, the contact spring 38 is in a relaxed state, the rotating bevel gear 15 is engaged with the spline bevel gear 17, the rotating bevel gear 48 is engaged with the engaging bevel gear 49, the connecting spring 42 is in a stretched state, the compression spring 65 is in a contracted state, and the detection spring 72 is in a relaxed state.

When the tire needs to be inflated, one side of the tire is placed into the clamping groove 68 to abut against the friction wheel 50, the power motor 16 is started to rotate forwards, the power motor 16 rotates to enable the rotating shaft 21 to rotate, the one-way shaft 22 cannot be driven to rotate under the action of the one-way coupler, meanwhile, the spline shaft 46 drives the rotary bevel gear 48 to rotate, so that the central shaft 51 rotates, the friction wheel 50 rotates, the tire rotates due to the friction force of the friction wheel 50, the tire rotates, the steel wire of the tire can pass through the gap of the left and right sliding racks 60, the air nozzle cannot rotate through the gap, the left and right sliding racks 60 mutually rotate, the sliding racks 60 move to drive the transmission gear 57 to rotate, so that the inflating block 53 mutually approaches to clamp the air nozzle, meanwhile, the positioning block 36 moves rightwards under the rotation of the tire, the oil pressure in the oil pipe 11 is reduced, the third piston push rod 47 drives the rotary bevel gear 48 to move leftwards, so that the rotary bevel gear 48 is disengaged from the meshing bevel gear 49, the tire does not rotate any more, meanwhile, under the action of the compression spring 65, the clamping blocks 62 approach each other to clamp the tire, then the power motor 16 rotates reversely, so that the one-way shaft 22 rotates, the rotating wheel 29 rotates, so that the connecting block 25 moves leftwards and rightwards, the inflating block 34 compresses to inflate the tire, the detection blocks 71 are separated from each other along with continuous inflation of the tire, the oil pressure in the oil path 64 is continuously increased, when the detection blocks 71 are separated from the limit position, the spline bevel gear 17 is disengaged from the rotary bevel gear 15, so that the connecting bevel gear 24 does not rotate any more to stop inflating, after the power motor 16 stops working, the electromagnet 43 is electrified, the repulsion permanent magnet 45 is restored to the original position, so that the positioning block 36 moves leftwards to be, the air pump blocks 53 are thus moved away from each other and the air nozzles are reexposed, while the rotation bevel gear 48 is caused to reengage the meshing bevel gear 49, while the fifth piston push rods 70 are moved away from each other to be reset so that the tire is no longer clamped.

The invention has the beneficial effects that: rotate the tire, through the slip rack gap about the steel wire process, the position of air cock can not come the definite air cock through the gap of slip rack about, thereby the piece of inflating behind the definite air cock position can self-holding begin to inflate, presss from both sides tight tire simultaneously, after enough gas was beaten to the tire, can the automatic shutdown inflate to prevent that excessive inflating from and the condition of taking place tire explosion takes place.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.