KR100398593B1 - Tire air injection apparatus - Google Patents

Abstract

The present invention relates to a device that floats a tire from the lower side of the tire so that air can be introduced quickly when air is injected into the tire, and is formed on one side of the pedal to control the user to control the air injection. A means for converting air while guiding the control of the air control means while moving left and right according to the rotation of the air control means, and a support plate for applying an electrical signal according to the control of the air control means. An air control device composed of a limit switch formed on an upper side of the air control unit, the air control unit includes a first protrusion formed to be connected to the connection member, and a second signal which contacts the limit switch and controls an electrical signal The protrusion and the air control means are hinged when rotated clockwise according to the control of the pedal. Is a design consisting of an elastic member connected between the hinge portion and the locking portion formed on the support plate and the first protrusion to apply an elastic force.

Description

Tire air injection device {TIRE AIR INJECTION APPARATUS}

The present invention relates to a tire air injection device, and more particularly, to an apparatus for floating a tire on the underside of a tire so that air can be introduced quickly when air is introduced into the tire.

In the conventional case, when air is to be introduced into a tire, air leaks from the inner surface of the tire, and thus, the tire may be prevented from leaking from the tire as several people lift the tire.

However, in this case, when the air is introduced into the tire, several people need to lift the tire, thus unnecessary personnel are required, thereby increasing the work cost.

The present invention is to solve the above problems, the tire that can easily inject air into the tire by injuring the tire by stepping on the pedal in one or two stages depending on the degree of air leakage when inflowing the tire into the tire An air injection device is provided.

Tire air injection device of the present invention for achieving the above object, the air tank for storing the air at a constant pressure, a check valve connected to the air tank and controls the flow of air in one direction, and the check A compressor connected to the valve and compressing air, a solenoid valve connected to the air tank and controlling the discharge of air stored in the air tank, and using air pressure to receive air discharged through the solenoid valve An air distributor which separates the tire from the floor by a predetermined interval, a turntable disposed above the air distributor to support the tire, a support plate fixed to an upper surface of the support frame, and one side of the pedal. Air control means for the user to control the air injection; Air conversion means for guiding the control of the air control means while moving left and right according to the rotation of the air control means and at the upper side of the support plate to apply an electrical signal according to the control of the air control means. In the tire air injection device composed of an air control device composed of a limit switch is formed,

The air control means may include a first protrusion which is formed to be connected to the connection member, a second protrusion which is formed to protrude on one side of the first protrusion and controls an electrical signal while being in contact with the limit switch, and the air. Pedals formed on one side of the control means for controlling the air injection as the user's foot, a hinge portion for the hinge control when the air control means rotates clockwise according to the control of the pedal, the hinge portion is inserted and rotated It is composed of a hinge binding portion that is bonded to the support frame by welding so as to be possible, and an elastic member connected between the locking portion formed on the support plate and the first protrusion to apply an elastic force.

1 is a schematic block diagram of a tire air injection device of the present invention,

2 is a perspective view of the tire inflation device of the present invention before operation;

3 is a perspective view of the tire inflation device of the present invention operated in one step,

Figure 4 is a perspective view of the tire air injection device of the present invention operated in two stages,

5 is an exploded perspective view of the air conversion means of the present invention,

Figure 6 (a) is a cross-sectional view of the air conversion means for the state before the pedal operation of the present invention, (b) is a cross-sectional view of the air conversion means operated in one step, (c) is a state operated in two steps It is sectional drawing of the air conversion means which shows.

<Explanation of symbols for the main parts of the drawings>

100: air tank 110: check valve

120: compressor 130: solenoid valve

132: Hall 1 134: Hall 2

136: 3rd tube 137: compressor connector

138: control signal line 150: turntable

152: Tire binding portion 154: Air nozzle guide portion

160: air distributor 162: air nozzle

200: air control device 201: support plate

202: air control means 204: hinge portion

210: pedal 206: first projection

208: recess 212: second projection

220: connecting member 222: hinge portion

230: air conversion means 232: fastening means

236: elastic force applying member 242: support plate

244: limit switch 246: limit contact plate

250: air switching member 251, 252, 253, 254, 255: first to fifth switching member

270: air switching case member

271 through hole 400 support frame

2362: first incision 2365: departure prevention plate

2366: second incision 2367: elastic member

2512, 2522, 2532, 2542, 2552: through hole

Specific configuration of the tire air injection device of the present invention will be described through the accompanying drawings as follows.

1 is a schematic view of a tire air injection device according to the present invention, an air tank 100 storing air at a constant pressure, and a check valve connected to the air tank 100 and controlling the flow of air ( 110, a compressor 120 connected to the check valve 110 and compressing air, and connected to the air tank 100 to control the discharge of air stored in the air tank 100. The air distributor 160, which receives the air discharged through the solenoid valve 130 and the solenoid valve 130, and separates the tire 140 from the bottom of the predetermined interval using air pressure, and the air distributor 160. It is composed of a turntable 150 disposed on the upper side to support the tire 140, and an air control device 200 for controlling a step of injecting air by the user to inject air into the tire 140. All.

That is, the user presses the pedal 210 by foot to inject air into the tire 140. The first step is to simply inject air into the tire 140 using air as in the conventional method. When the air is injected into the tire 140, since the air is discharged from the inner surface of the tire 140 is not injected quickly, the air is ejected from the air distributor 160 so that the air easily flows into the tire 140 The compressed air is used to space the tire 140 upward from the turntable 150.

That is, the turntable 150 and the air distributor 160 use a conventional method used in the existing, and in the present invention is characterized by a specific configuration regarding the air supply device to be applied to the air distributor 160. .

The solenoid valve 130 is connected to a plurality of pipes, the first pipe 132 is connected to the solenoid valve 130, and is connected to the air distributor 160 from the first pipe 132 And a second pipe 134 and a third pipe 136 for applying air so that the tire 140 is spaced apart from the ground by injecting air from the bottom surface of the tire 140 and the air control device 200. According to the control, the air is discharged from the solenoid valve 130, and the control signal line 138 is configured to control the air to flow into the air distributor 160.

In addition, the turntable 150 receives air discharged from the air distributor 160 and installs four locations on the circumferential surface at an angle of 90 ° so as to guide the tire 140 to be spaced apart from the ground and then spray compressed air. An air nozzle guide portion 154 is formed, and a tire binding portion 152 is formed on the upper end of the air nozzle guide portion 154 to support the tire 140 to be fixedly installed.

In addition, the air distributor 160 receives air discharged from the solenoid valve 130 and installs four locations on the circumferential surface at an angle of 90 ° to be formed to match the air nozzle guide part 154 to inject compressed air. The air nozzle 162 which guides so that it may be formed is formed.

As shown in FIG. 2, the air control device 200 includes a support frame 400 for supporting a bottom of a main body (not shown), a support plate 201 fixed to an upper surface of the support frame 400, and Is formed on one side of the pedal 210, the air control means 202 to control the user to adjust the air injection, and the air control means while moving from side to side in accordance with the rotation of the air control means (202) The limit switch is formed on the upper side of the support plate 242 to guide the control of the 202 and at the same time to convert the air and to apply an electrical signal under the control of the air control means (202) It consists of 244.

The support plate 201 is formed with a locking portion 203 which is cut off.

The air control means 202 is formed of a plurality of protrusions, and is formed to protrude on one side of the first protrusion 206 and the first protrusion 206 formed to be connected to the connection member 220. And a second protrusion 212 that is in contact with the limit switch 244 and controls an electrical signal, and a pedal 210 that is formed on one side of the air control means 202 to control air injection as a foot of a user. And a hinge part 204 disposed in the inner side of the cylindrical member of the central part of the pedal 210 when the air control means 202 rotates clockwise according to the control of the pedal 210, and the hinge part 204 acts as a hinge. Both ends of the hinge portion 204 are inserted and fixed so as to be rotatable, and the support frame 400 has a hinge binding portion 209 which is fixed by welding or the like, and a locking portion 203 formed on the support plate 201 and It is elastically connected between the first protrusions 206 It is composed of an elastic member 205 for applying a force.

The left portion of the hinge binding portion 204 is partially omitted in order to describe the hinge portion 204. And even if the pedal 210 rotates on both sides of the hinge portion 204, the hinge portion 204 A plurality of washers 2041 are attached to both ends so as not to be separated, that is, the center portion of the hinge portion 204 is supported inside the cylindrical member integrally formed at the center portion of the pedal 210 and the hinge portion ( Both ends of the 204 are supported by the plurality of hinge fastening portions 209 to hinge according to the rotation of the pedal 210.

The first protrusion 206 is formed with a concave portion 208 formed to be concave so as to operate integrally without being separated while being guided to the hinge portion 222.

In addition, the air converting means 230 senses the amount of rotation as it rotates in the clockwise direction of the air control means 202 and receives the air applied from the compressor 120 to discharge the tire 140 to the tire. It is operated to inject air into the 140, the connecting member 220 is connected to the air conversion means 230 is guided to move left and right according to the rotation amount of the air control means 202 to the support plate 201 And an air conversion member 260 for converting air supplied from the compressor 120 according to the movement of the connection member 220.

The hinge member 222 is inserted into the concave portion 208 of the first protrusion 206 and connected to the air control means 202 and the connection member 220 integrally with the connection member 220. And the elastic force applying member 236 is formed of a through hole 224 formed to be fastened by the fastening means 232.

In addition, the air conversion member 260 is connected to the connection member 220 and moved integrally with the connection member 220 while controlling the air through a plurality of cutouts formed on the outer surface and at the same time to apply an elastic force Air switching disposed on the outer side of the applying member 236 and the elastic force applying member 236 is formed of a plurality of members to convert the air applied from the compressor 120 in accordance with the movement of the elastic applying member 236 One end of the member 250 and the support plate 201 are formed and an air switching case member 270 having the elastic force applying member 236 and the air switching member 250 disposed on an inner side thereof.

The elastic force applying member 236 is connected to one side of the connecting member 220 in contact with the support plate 201 and the connecting guide member 2361 and a plurality of cutouts are formed on the outer surface, the connection guide An elastic member 2367 formed at one end of the member 2361 to apply an elastic force when the pedal 210 of the air control means 202 is rotated in a clockwise direction, and formed on one side of the elastic member 2367 A separation preventing plate 2365 for guiding the elastic member 2367 so as not to be separated outwardly, and a fastening means 232 for fastening to operate integrally with one side of the connection guide member 2361 and the connection member 220. ) And a fastening member 2363 for binding the release preventing plate 2365 to the outside so that the release preventing plate 2365 is not separated.

The connection guide member 2361 has a second cutout 2366 formed on the leftmost side, a first cutout 2362 formed on the right side of the second cutout 2366, and the second cutout. A first circular portion 2368 formed at one end of the portion 2366, and a second circular portion 2364 formed between the second cutout 2366 and the first cutout 2362. Consists of.

The elastic member 2367 is a spring that is commonly used, it is also included in the present invention that may be applied in various ways, such as a leaf spring according to the user.

In addition, the fastening means 232 is generally used, such as bolts, if necessary, it is also included in the present invention to use welding or other methods.

In addition, the air switching member 250 is formed of a plurality of members and a packing member, the first switching member 251 formed on the leftmost side and the second disposed on the right side of the first switching member 251. A switching member 252, a third switching member 253 disposed on the right side of the second switching member 252, and a fourth switching member 254 disposed on the right side of the third switching member 253; And a fifth switching member 255 disposed on the right side of the fourth switching member 254, and a packing member 256 is disposed between the switching members.

The packing member 256 may use a conventional O-ring or similar packing.

The first switching member 251 is annularly formed in the center of the outer surface of the through hole 2513 and the through hole is formed in the center to be disposed in the first circular portion (2368) and the first switching member 251 The annular incision 2511 cut off and the through-hole 2512 formed in two annular incisions 2511 at 180 degree space | intervals, ie, are formed.

Like the first switching member 251, the second, third, fourth and fifth switching members 252, 253, 254 and 255 are similarly formed.

That is, the second switching member 252 has a through hole 2523 having a through hole formed in the center thereof so as to be disposed in the second cutout 2366, and a central portion of an outer surface of the second switching member 252. The annular incision 2521 cut | disconnected in annular form and the through-hole 2522 in which the two annular incisions 2521 are formed by 180 degree space | interval, ie, are formed.

The third switching member 253 is provided with a through hole 2533 having a through hole formed in the center thereof so as to be disposed in the second circular portion 2364, and an annular portion in the center of the outer surface of the third switching member 253. The annular incision 2253 which is cut out by 2, and the through-hole 2532 which is formed in the annular incision 2253 at 180 degree space | interval, ie, two are formed.

In addition, the fourth switching member 254 is provided with a through hole 2543 having a through hole formed at the center thereof so as to be disposed in the first cutout portion 2236, and an annular portion at the center of the outer surface of the fourth switching member 254. The annular cut-out portion 2541 cut out by the second cut portion and the through-holes 2542 formed in the annular cut-out portion 2581 at 180 ° intervals, that is, two are formed.

In addition, the fifth switching member 255 has a through hole 2553 having a through hole formed in the center thereof so as to be disposed on the outer surface of the connecting guide member 2361, and an outer surface of the fifth switching member 255. An annular cutout 2551 that is annularly cut in the center portion and two through holes 2552 formed in the annular cutout 2551 at 180 ° intervals, that is, two are formed.

In addition, the air switching case member 270 has an air switching case body 278 which is a body of the air switching case member 270, and a plurality of through holes 272 which are formed to be fixed to the support plate 201, and The elastic force applying member 236 and the air switching member 250 are formed in a plurality of through-holes 271 penetrated therein so as to be disposed therein and formed on the outer surface of the air switching case body 278, and the through-holes. First to fifth connecting pipes (273, 274, 275, 276, 277) connected to the 271, the first connecting valve 282 is connected to the third connecting pipe (275) and the fourth connecting pipe (276) And a second connecting valve 284.

That is, as described above, the first connection valve 282 is a valve that receives air applied from the compressor 120 through the compressor connection pipe 137, and the second connection valve 284 is As the pedal 210 is operated, the air introduced into the first connection valve 282 is discharged, and thus the connection valve is configured to inject air into the tire 140.

In addition, the support plate 242 is attached to the support plate 201 by welding or the like, and the limit switch 244 installed on the support plate 242 protrudes long to be in contact with the second protrusion 212. And a control signal line 138 for applying an electrical signal to the solenoid valve 130 according to the signal of the limit contact plate 246. The operation is described as follows.

When the user drives the apparatus of the present invention after turning on the power (not shown), the compressed air discharged from the air tank 100 is controlled by the solenoid valve 130 to control the discharge of the compressed air. .

As shown in FIG. 1, the user places the tire 140 on the upper end of the turntable 150 and binds the tire 140 by the tire fastening unit 152.

After the operation is completed, the user steps on the pedal 210 formed on the air control unit 202 shown in FIG. 2.

When the user presses the pedal 210 lightly, as described above, as shown in FIG. 3, the operation of the first step is performed, and the air control means 202 is connected to the hinge part 204. Rotate clockwise around.

As such, when the air control means 202 rotates clockwise, the first protrusion 206 formed to protrude on one side of the air control means 202 also rotates clockwise. As the protrusion 206 rotates, the hinge portion 222 of the connection member 220 inserted and fastened to the concave portion 208 of the first protrusion 206 is integrally operated with the first protrusion 206. As you move to the right.

When the connection member 220 is moved to the right as described above, the connection guide member 2361 connected to the connection member 220 by the fastening means 232 is also right along with the movement of the connection member 220. Will be moved to.

As the connecting guide member 2361 moves to the right side, as shown in FIG. 3, the elastic member 2367 disposed on the outside of the connecting guide member 2361 and applying an elastic force also moves to the right side to some extent. After moving to the right while being compressed, the movement of the elastic member 2367 is limited.

However, at this time, the second protrusion 212 connected to the first protrusion 206 rotates together with the first protrusion 206 and does not come into contact with the limit contact plate 246 to apply an electrical signal. will be.

At this time, as shown in FIG. 6 (a), the passage is blocked by the second circular portion 2364 disposed at the lower end of the third switching member 253 before the operation of the first step is performed. Since the air applied from the 120 is blocked, that is, the air is not introduced from the first connecting valve 282 connected to the third connecting pipe 275, and then air can be introduced into the tire 140. It is not there.

However, as shown in FIG. 6 (b), after the operation of step 1 is performed, when the connecting guide member 2361 connected to the connecting member 220 and integrally moved to the left is moved to the left side, the support plate 201 The air passage is formed so that an error is circulated through the third switching member 253 and the fourth switching member 254 by the air switching case member 270 that is fixed to the upper and lower sides.

That is, as shown in FIG. 6B, when the connection guide member 2361 is moved to the right, the first cutout 2362 formed in the connection guide member 2361 is moved to the third switch. It is arrange | positioned at the intermediate part of the member 253 and the 4th switching member 254.

As described above, when the first cutout portion 2362 is disposed at an intermediate portion of the third switching member 253 and the fourth switching member 254, the third switching member 253 and the fourth switching member 254 are disposed on the intermediate portions of the third switching member 253 and the fourth switching member 254. The air is discharged from the compressor 120 through the plurality of through-holes 2532 and 2542 formed therein, and the third switching member passes through the compressor connecting pipe 137 and the third connecting pipe 275. (253).

Then, air flows in through the plurality of through holes 2532 formed in the third switching member 253, and then through holes 2254 formed in the fourth switching member 254 through the first cutout 2362. Air is discharged through).

As such, the air discharged through the through-holes 2542 is supplied to the tire 140 through the fourth connecting pipe 276 and the second connecting valve 284 connected to the outside of the fourth switching member 254. It is supplied.

Of course, when the operation of the first step is returned to the original state, as described above, the operation returns to the state shown in FIG. 6 (a), that is, the third switching member 253 and the fourth switching member ( 254 is blocked without being connected to each other, the supply of air to the tire 140 is cut off.

After the operation of the first step, that is, the operation of injecting air into the tire 140 is performed, when the user determines that the injection of air is not easy, as shown in FIG. 4, the pedal ( If 210 is pressed further clockwise, the two-step operation is performed.

That is, when the pedal 210 is pressed further, the air control means 202 is rotated further clockwise around the hinge portion 204, and the air control means 202 is rotated more. As a result, the first protrusion 206 formed in the air control unit 202 is further rotated.

As the first protrusion 206 rotates as described above, the connection member 220 moves to the right together with the hinge portion 222 connected to the first protrusion 206.

That is, since the connection member 220 is further moved to the right side, the elastic member 2367 is compressed to generate a compressive force.

On the other hand, when the second protrusion 212 is further rotated together with the air control means 202 and comes in contact with the limit contact plate 246, it is moved to the right while pushing the limit contact plate 246.

Subsequently, an electrical signal is generated at the limit switch 244 to be applied through the control signal line 138 so that the solenoid valve 130 is controlled. Then, the compressed air discharged from the solenoid valve 130 is discharged from the air. It is applied to the air distributor 160 by the control of the conversion member 260.

As such, when the operation of the second stage is performed, as shown in FIG. 6C, the third switching member 253 and the fourth switching member 254 pass through each other, that is, the compressor 120. In the state where the air supplied from the continuously applied to the tire 140 via the compressor connecting pipe 137, the connecting guide member 2361 connected to the connecting member 220 and moved integrally is more right. As described above, the second protrusion 212 comes into contact with the limit contact plate 246 as described above, so that an electrical signal is applied to the limit switch 244.

As compressed air is applied to the air distributor 160 as described above, when compressed air is applied to the plurality of air nozzles 162 formed on the air distributor 160, the plurality of air nozzle guide parts formed on the turntable 150 are provided. Compressed air is applied to 154, and then air applied through the solenoid valve 130 is applied to the tire 140 because the tire 140 is spaced apart from the bottom of the turntable 150 by the pressure of the compressed air. ) Is easily injected.

On the other hand, when the user performs the operation described above and releases the pedal 210 that is stepped on after injecting air into the tire 140, the air control means 202 is rotated counterclockwise, and then The hinge portion 222 connected to the first protrusion 206 of the air control means 202 moves to the left side.

As the hinge part 222 is moved to the left as described above, the compression of the elastic member 2367 that is compressed on the outside of the connection guide member 2361 is released.

At the same time, the limit contact plate 246 that is pushed to the right while being in contact with the second protrusion 212 is also moved to the left as the second protrusion 212 moves to the left, so that the contact is separated. Will return to its original state.

Tire air injection device of the present invention configured as described above, the air control to form a plurality of air nozzle guide portion and air nozzle on the turntable and the air distributor, the user can inject air by operating in multiple stages during the air injection By forming a device, the invention can inject air into a tire quickly and easily.

Claims (12)

Air tank 100 for storing air at a constant pressure, and the check valve 110 is connected to the air tank 100 and controls the flow of air in one direction, and is connected to the check valve 110 Compressor 120 for compressing air, a solenoid valve 130 connected to the air tank 100 and controlling the discharge of air stored in the air tank 100, and the solenoid valve 130 An air distributor 160 which receives the air discharged through the air and separates the tire 140 from the floor by a predetermined interval, and a turntable disposed on the air distributor 160 to support the tire 140. 150, and a support plate 201 fixed to the upper side of the support frame 400, and air control means 202 formed on one side of the pedal 210 to control the air injection by the user. And above Air conversion means 230 for guiding the control of the air control means 202 and converting air at the same time while moving left and right according to the rotation of the air control means 202, and the control of the air control means 202 In the tire air injection device composed of an air control device 200 is composed of a limit switch 244 formed on the upper side of the support plate 242 to apply an electrical signal, The air control means 202 is formed to protrude on one side of the first protrusion 206 and the first protrusion 206 formed to be connected to the connecting member 220 and the limit switch 244 and A second protrusion 212 for contacting and controlling an electrical signal, a pedal 210 formed on one side of the air control means 202 to control air injection as a foot of the user, and the air control means 202 ) Is hinged to the support frame 400 to be rotatable by the hinge portion 204 and the hinge portion 204 is inserted into the hinge when the clockwise rotation under the control of the pedal 210 is rotatable It is composed of an elastic member 205 is connected between the hinge binding portion 209 and the locking portion 203 formed on the support plate 201 and the first protrusion 206 to apply an elastic force. Tire inflation device. delete delete delete According to claim 1, The air conversion means 230 is connected to the support plate 201, the connecting member 220 for guiding to move left and right according to the rotation amount of the air control means 202 and the connecting member ( Tire air injection device, characterized in that consisting of an air conversion member 260 for converting the air supplied from the compressor (120) in accordance with the movement. The method of claim 5, wherein the connecting member 220 is inserted into the recess 208 of the first protrusion 206 is connected to the air control means 202 and the connecting member 220 to operate integrally. A tire air injection device, characterized in that the hinge portion (222) and the elastic force applying member (236) is formed by a through hole (224) formed to be fastened by the fastening means (232). The air conversion member 260 is connected to the connection member 220 and moved integrally with the connection member 220 while simultaneously controlling the air through a plurality of cutouts formed on the outer surface thereof. An elastic force applying member 236 for applying an elastic force and a plurality of members disposed outside the elastic force applying member 236 to convert air applied by the compressor 120 according to the movement of the elastic applying member 236. One end of the air switching member 250 and the support plate 201 are formed, and the air switching case member 270 having the elastic force applying member 236 and the air switching member 250 disposed on an inner side thereof. Tire air injection device, characterized in that configured. The connecting guide member 2361 of claim 7, wherein the elastic force applying member 236 is connected to one side of the connecting member 220 in contact with the support plate 201 and has a plurality of cutouts formed on an outer surface thereof. And an elastic member 2367 formed at one end of the connection guide member 2361 to apply an elastic force when the pedal 210 of the air control means 202 is rotated in a clockwise direction, and the elastic member 2367. Is formed on one side of the separation preventing plate (2365) for guiding the elastic member (2367) to be separated to the outside, and to operate integrally with one side of the connection guide member (2361) and the connection member 220 Tire air injection, characterized in that the fastening means 232 for fastening, and the fastening member 2363 is fastened so that the departure prevention plate 2365 is bound to the outside to prevent the separation prevention plate 2365 from being separated. Device. 9. The second cutout 2362 formed in one side of the connection guide member 2361 and the second cutout 2366 formed at the left side of the first cutout 2362. And a first circular portion 2368 formed at one end of the second cutout 2366, and a second formed between the second cutout 2366 and the first cutout 2362. Tire air injection device, characterized in that composed of a circular portion (2364). The method of claim 7, wherein the first switching member 251 disposed on one side of the air switching member 250, and the second switching member 252 disposed on the right side of the first switching member 251 and The third switching member 253 disposed on the right side of the second switching member 252, the fourth switching member 254 disposed on the right side of the third switching member 253, and the fourth switching member. And a packing member 256 disposed between the fifth switching member 255 disposed on the right side of the 254 and the plurality of first to fifth switching members 251 to 255, respectively. Tire air injector. 11. The method of claim 10, wherein the first switching member 251 of the through hole 2513 having a through hole formed in the center so as to be disposed in the first circular portion (2368) and the first switching member 251 of the A tire air injecting device, comprising: an annular cutout portion 2511 that is annularly cut in the center of the outer surface, and a plurality of through holes 2512 formed in the annular cutout portion 2511. According to claim 7, The air switching case member 270 has a plurality of through-holes to be formed in the air switching case body 278 that is the body of the air switching case member 270 and the support plate 201 272, a plurality of through holes 271 through which the elastic force applying member 236 and the air switching member 250 are disposed inward to operate, and a plurality of outer side surfaces of the air switching case body 278. First to fifth connection pipes 273, 274, 275, 276 and 277 formed and connected to the through hole 271, a first connection valve 282 connected to the third connection pipe 275, and the fourth connection pipe ( Tire inflation device, characterized in that consisting of a second connecting valve (284) connected to.