CN206036338U - Dual-purpose air tap joint - Google Patents

Abstract

The utility model relates to a dual-purpose air nozzle joint, which mainly comprises a first air nozzle connecting end, a second air nozzle connecting end, an air inlet, a switching valve chamber, a sealing slide block and a fixing pin; the switching valve chamber is communicated to a first inflation channel of the first air nozzle connecting end, a second inflation channel of the second air nozzle connecting end and an air inlet, and the sealing slide block is accommodated in the switching valve chamber. The fixing pin is arranged in the first inflation channel, and the first end of the fixing pin extends into the switching valve chamber. When the first air nozzle connecting end is coupled with the first air nozzle, the opening and closing valve of the first air nozzle pushes against the second end of the fixing pin so as to open the opening and closing valve, and the air flow from the first air nozzle pushes the sealing slip block to seal the second inflation channel; when the second nozzle connecting end is coupled with the second nozzle, the air flow from the second nozzle pushes the sealing slider to seal the first inflation channel.

Description

Dual-purpose air nozzle connector

technical field

The utility model relates to a dual-purpose air nozzle joint, in particular to an air nozzle joint suitable for inflating vehicle tires in two types of air nozzles.

Background technique

Taking the bicycle industry as an example, there are a variety of valve specifications for different tire types, such as French valve (Presta valve), American valve (Schrader valve), and British valve (Dunlop valve). However, the various valve types often cause confusion for the user, since the fittings have to be changed for different valve types.

Although, at present, manufacturers have developed a single joint that can be used in common with American and French valves, such as Taiwan Patent Publication No. I498479 "American and French dual-purpose valve joint structure", but in terms of user experience , there are still inconveniences in its use.

To further explain, in the above patent, the main feature is that the American-style and French-style valves share the same connection port, and the operation of connecting the American-style valve and the French-style valve is different and quite complicated, which is likely to cause confusion for users. Further explanation, when connecting the American-style valve, the control component must be pushed in the direction of the American-style valve first, so that the limit block bites the brake lever; then, connect the American-style valve, so that the external thread of the American-style valve is screwed into the joint The American-style thread on the body, the brake lever will open the American-style valve during the screwing process, and then it can be inflated.

On the other hand, when the French valve is to be connected, the control unit must be pushed in the opposite direction first, and then after the French valve is inserted, the control unit is then pushed in the direction of the French valve so that the limit block bites into the French valve. The French screw of the mouth, and finally the French valve is opened by the inflation pressure, so that the French air nozzle can be inflated.

As far as the above content is concerned, because the American and French valves share the same connection port, and the operation methods of the two are quite different, it is easy to cause confusion for users. If the operation is wrong, it will not be able to inflate smoothly, and even cause Damage to valves or fittings.

In addition, when the valve connector disclosed in the above patent is connected to the French valve, it is necessary to open the French valve through the inflation pressure; in other words, it is possible only when the air pressure of the inflation source is greater than the pressure inside the tire. Open the French valve; in this case, it can only be inflated in one direction. When the air pressure in the tire is too high, the air nozzle joint cannot perform real-time pressure relief adjustment, so it is quite inconvenient.

Utility model content

The main purpose of the utility model is to provide a dual-purpose air nozzle joint to connect and inflate two air nozzles of different specifications, which is easy to operate and not easy to mix, which is quite convenient for users.

In order to achieve the above purpose, the dual-purpose air nozzle joint of the utility model mainly includes the first air nozzle connection end, the second air nozzle connection end, the air inlet, the switching valve chamber, the sealing slider and the fixing pin; wherein, the first One gas nozzle connection end includes a first gas charging channel, the second gas nozzle connecting end includes a second gas charging channel, and the air inlet is used to connect to the air pressure source, and the switching valve chamber is connected to the first gas charging channel, the second gas charging channel and the inlet The switching valve chamber includes a first end surface and a second end surface. The first end surface is provided with a first opening, and the second end surface is provided with a second opening. The first opening communicates with the first inflation channel, and the second opening communicates with the second Two air-inflating passages, and another airtight sliding block is accommodated in the switching valve chamber and can slide freely. In addition, the fixed pin includes a through hole, a first end and a second end, and the through hole runs through the first end and the second end, and the fixed pin is arranged in the first inflation channel, and the first end extends into the switching valve chamber. The end surface of one end constitutes the first end surface. Wherein, when the connecting end of the first air nozzle is coupled to the first air nozzle, the opening and closing valve of the first air nozzle pushes against the second end of the fixed pin to open the opening and closing valve, and the airflow from the first air nozzle pushes the airtight slide block to seal the second inflation passage, and the inflation airflow from the air pressure source passes through the air inlet, the switching valve chamber, and the first inflation passage to inflate the first air nozzle; wherein, when the second air nozzle connection end is coupled to the first In the case of two air nozzles, the airflow from the second air nozzle pushes the sealing slider to seal the first inflation passage, while the inflation airflow from the air pressure source passes through the air inlet, the switching valve chamber and the second inflation passage to the second airflow. Inflate the mouth.

Accordingly, the utility model is provided with two gas nozzle connection ends, and different types of gas nozzles have independent gas nozzle connection ends, so that users are not easy to confuse, and the probability of operating errors will be greatly reduced. Furthermore, the dual-purpose air nozzle joint of the present utility model can automatically switch the flow path of the inflated air flow through the connected air nozzle, that is, the internal air pressure of the connected air nozzle directly pushes the sealing slider to determine the direction of the inflated air flow. The flow path has no other switching mechanism or means that requires the user to manually switch, and the mechanism is simple, not easy to fail, and the cost is low.

Furthermore, the through hole of the fixed pin of the present invention can be used to form the flow channel of the inflated air flow, and its first end can form a wall surface of the switching valve chamber, and its second end can be directly used to open the first air flow. The opening and closing valve of the nozzle, that is, the second end can withstand the opening and closing valve of the first air nozzle to open the valve. In addition, and more importantly, the setting of the fixing pin can simplify the design of the whole mechanism, making the assembly more convenient and the cost lower.

More preferably, when the connecting end of the first air nozzle is coupled to the first air nozzle, and the pressure inside the first air nozzle is about 1 atmosphere, more than half of the airflow from the air inlet will first flow out through the second inflation channel, And the sealing slider will move and seal the second inflation passage; after the first air nozzle is inflated, the air pressure from the first air nozzle will continuously drive the sealing slider to seal the second inflation passage. When the connecting end of the second air nozzle is coupled to the second air nozzle, and the pressure inside the second air nozzle is about 1 atmosphere, more than half of the airflow from the air inlet will first flow out through the first inflatable channel, sealing the slider It will move and seal the first inflatable passage; after inflating the second air nozzle, the air pressure from the second air nozzle will continuously make the sealing slider seal the first inflatable passage.

In other words, when there is no air in the tire with the first air nozzle, the inflation air flow can first inflate the tire to about 1 atmosphere, and then because the inflation air flow flows to a lower pressure place, most of the inflation air flow will first pass through The second inflatable channel flows out, and the inflated airflow will drive the sealing slider to seal the second inflatable channel; then, the inflated airflow will inflate the first air nozzle, and then the high-pressure air from the first air nozzle will continuously drive the sealing The anti-sliding block seals the second inflation channel, so that the first air nozzle can be inflated smoothly. On the other hand, when it is desired to inflate a tire with a second air nozzle, and the tire is also in an airless state, it operates on the same principle.

Moreover, the switching valve chamber of the dual-purpose air nozzle joint of the present utility model can be a barrel-shaped chamber; the other sealing slider is a cylindrical slider, which includes a first airtight surface and a second airtight surface, and The diameters of the first airtight surface and the second airtight surface are respectively larger than the diameters of the first opening and the second opening. Accordingly, the utility model can slide the cylindrical sealing slider in the barrel-shaped switching valve chamber, and use the first airtight surface and the second airtight surface of the sealing slider to seal the barrel-shaped chamber The first end surface, and the first opening and the second opening on the second end surface achieve the purpose of switching the inflation air flow.

Furthermore, the dual-purpose air nozzle joint of the present invention may further include a body, and the first inflation channel is disposed in the body, and the fixing pin is screwed to be fixed to the body. In addition, the dual-purpose air nozzle joint of the present invention can also include an O-ring, which can be arranged between the fixing pin and the body. In other words, the fixing pin of the present invention can be screwed and fixed into the body, the assembly process is quite simple, and the O-ring can be used to achieve airtightness between the fixing pin and the body.

Moreover, the cross-sectional area of the switching valve chamber of the dual-purpose air nozzle joint of the present invention is larger than that of the sealing slider; and at least one vent hole is opened on the side wall of the switching valve chamber, which communicates with the air inlet. Accordingly, by designing the cross-sectional area of the switching valve chamber to be larger than the cross-sectional area of the sealing slider, the sealing slider can easily slide in the switching valve chamber, and the inflation air can easily pass through the switching valve chamber The ventilation hole in the side wall flows into the switching valve chamber.

In addition, the dual-purpose air nozzle joint of the present utility model can also include an air pressure source connector; the second inflation channel and the switch valve chamber are arranged in the body, and the air pressure source connector is assembled in the body; the air pressure source connector includes an air passage, A pressure relief valve and an air inlet, one end of the air passage is connected to the air inlet, and the other end of the air passage is connected to at least one air hole in the switching valve chamber; the pressure relief valve can selectively connect the air passage to the atmosphere. Accordingly, the utility model can adjust the air pressure in the first air nozzle and the second air nozzle by means of the pressure relief valve.

In addition, the dual-purpose air nozzle joint of the present utility model can also include two sealing rings, and the outer ring of the body can be provided with a ventilation ring groove and two sealing ring grooves, and the ventilation ring groove is arranged between the two sealing rings. between the grooves, and the vent ring groove is connected to the air channel and at least one vent hole; wherein, the two seal rings are respectively arranged in the two seal ring grooves, so that the outer circumferential surface of the body and the inner surface of the air pressure source connector An airtight seal is formed between the circumferential surfaces of the ring. In other words, the inflation air flow from the air pressure source will flow through the air channel of the air pressure source connector and the breather ring groove of the body, and enter the switching valve chamber through at least one air hole on the body; and the two seal rings and the two seals The ring groove is used to prevent gas from leaking from the ventilation ring groove through the outer peripheral surface of the body and the inner peripheral surface of the air pressure source connector.

Furthermore, the dual-purpose air nozzle joint of the present utility model can also include a rear airtight ring and a cap, while the body includes a front end and a rear end, and the rear end includes a convex portion, the cap is assembled on the rear end, and the rear airtight ring covers It is located on the convex part and between the cap and the rear end. In addition, the second inflatable channel can be arranged at the rear end of the body, and the convex part opens at least one radial through hole, which communicates with the second inflatable channel; wherein, when the second air nozzle is connected to the connection end of the second air nozzle, The front edge of the second air nozzle abuts against the rear airtight ring, and the convex portion abuts against the opening and closing valve of the second air nozzle, and the inflation airflow from the air pressure source passes through the air inlet, the air passage, at least one air hole, and the switching valve chamber , the second inflation channel and at least one radial through hole to inflate the second air nozzle.

In order to achieve the above purpose, the dual-purpose air nozzle joint of the utility model mainly includes a body, an air pressure source connector, a sealing slider and a fixing pin; the body includes a first inflation channel, a second inflation channel and a switching valve chamber, and the switching valve The chamber is between the first inflatable channel and the second inflatable channel and communicates with each other; the air pressure source connector is assembled on the body, the air pressure source connector includes an air passage and an air inlet, and the air passage is connected to the switching valve chamber and the air inlet , the air inlet is used to connect to the air pressure source; the sealing slider is accommodated in the switching valve chamber and can slide freely; the fixed pin includes a through hole, a first end and a second end, and the through hole runs through the first end and the second end , The fixed pin is set in the first inflation channel, the first end extends into the switching valve chamber, and the second end is used to push against the opening and closing valve of the air nozzle.

In order to achieve the above purpose, the dual-purpose air nozzle joint of the present utility model mainly includes a body, an air pressure source connector, a sealing slider and a fixed pin; the body includes a first inflation channel, a second inflation channel and a switching valve chamber; and the switching valve The chamber is a barrel-shaped chamber, which includes a first end surface and a second end surface, and the first end surface is provided with a first opening, and the second end surface is provided with a second opening, and the first opening communicates with the first air-filling channel, and the second opening Connected to the second inflatable channel; the air pressure source connector is assembled on the body, and the air pressure source connector includes an air inlet, which is used to connect to the air pressure source and communicate with the switching valve chamber of the body; the sealing slider is accommodated in In the switching valve chamber; the fixing pin includes a through hole, a first end and a second end, the through hole runs through the first end and the second end, the fixing pin is arranged in the first inflation channel, the first end extends into the switching valve chamber, the first The end surface of the end constitutes the first end surface; wherein, when the first air-inflating channel is coupled to the first air nozzle, the airflow from the first air nozzle pushes the sealing slider to seal the second opening of the second end surface; when the second inflatable When the channel is coupled to the second air nozzle, the air flow from the second air nozzle pushes the sealing slider to seal the first opening on the first end surface.

Description of drawings

Fig. 1 is an exploded view of a preferred embodiment of the present invention.

Fig. 2 is a sectional view of a preferred embodiment of the present invention.

Fig. 3 is a cross-sectional exploded view of a preferred embodiment of the present invention.

Fig. 4 is a cross-sectional view of a preferred embodiment of the utility model when it is connected to an American-style valve.

Fig. 5 is a cross-sectional view of a preferred embodiment of the present invention when the French valve is connected.

detailed description

Before the dual-purpose air nozzle joint of the present invention is described in detail in this embodiment, it should be noted that in the following description, similar components will be represented by the same component symbols. Furthermore, the drawings of the present utility model are only for schematic illustration, and they may not be drawn to scale, and not all details may be presented in the drawings.

Please refer to Figure 1, Figure 2 and Figure 3 at the same time, Figure 1 is an exploded view of a preferred embodiment of the dual-purpose air nozzle joint of the present invention, and Figure 2 is a cross-section of a preferred embodiment of the dual-purpose air nozzle joint of the present invention Fig. 3 is a cross-sectional exploded view of a preferred embodiment of the dual-purpose air nozzle joint of the present invention. What needs to be explained first is that the following embodiments are applicable to French valves (Presta valve) and American valves (Schrader valve) as examples for illustration, but the utility model is not limited thereto, and other types of valves are also applicable. Can be applicable to the utility model.

As shown in the figure, the main components of the dual-purpose air nozzle joint in this embodiment include a body 11 , an air pressure source connector 12 , a sealing slider 6 , a fixing pin 7 , a sleeve joint 13 and a sleeve 14 . Wherein, the body 11 includes a first inflation passage 21, a switching valve chamber 5 and a second inflation passage 31, and the three are arranged along the axial direction of the body 11; and the switching valve chamber 5 is a barrel-shaped chamber, which includes a first end surface 51 And the second end surface 52, and the first end surface 51 is opened with a first opening 511, the second end surface 52 is opened with a second opening 521, the first opening 511 communicates with the first inflatable channel 21, and the second opening 521 communicates with the second inflatable channel 21 Channel 31.

In addition, a vent ring groove 116 and two seal ring grooves 117 are formed on the outer ring of the body 11 in the circumferential direction, and the vent ring groove 116 is disposed between the two seal ring grooves 117 . As shown in the figure, the two sealing rings 81 and 82 are respectively disposed in the two sealing ring grooves 117 , and two ventilation holes 53 are opened on the side wall of the switching valve chamber 5 , which communicate with the ventilation ring groove 116 . Accordingly, in this embodiment, through the arrangement of the two sealing rings 81 and 82, an airtight seal can be formed between the outer circumferential surface of the main body 11 and the inner circumferential surface of the air pressure source connector 12, allowing the air to flow through the ventilation ring groove. 116 gas will not leak.

Moreover, the body 11 further includes a front end 111 and a rear end 112 , the rear end 112 includes a convex portion 113 , and the convex portion 113 defines a radial through hole 110 , which communicates with the second inflation channel 31 . In addition, as shown in the figure, the rear end 112 of the body 11 is assembled with a cap 115, and the rear air-tight ring 114 is sleeved on the convex portion 113, and the rear air-tight ring 114 is interposed between the cap 115 and the rear end 112. between. However, the rear end 112 including the body 11, the cap 115 and the rear air-tight ring 114 form the second air nozzle connection end 3, which can be used to connect the second air nozzle S; the second air nozzle S in this embodiment is American-style air mouth.

Furthermore, the air pressure source connector 12 is assembled on the main body 11, and the air pressure source connector 12 includes an air passage 121, a pressure relief valve 122 and an air inlet 4, and one end of the air passage 121 is connected to the air inlet 4, and the air is ventilated. The other end of the passage 121 communicates with the vent ring groove 116 of the switching valve chamber 5 . The pressure relief valve 122 selectively connects the air channel 121 to the atmosphere for pressure regulation.

Also, the fixed pin 7 shown in the figure includes a through hole 71, a first end 72, and a second end 73, and the through hole 71 runs through the first end 72 and the second end 73, and the fixed pin 7 is arranged on the first end 73. In the inflation passage 21, the first end 72 extends into the switching valve chamber 5, and the end surface of the first end 72 constitutes the first end surface 51, and the second end 73 is used to push against the opening and closing valve P1 of the first air nozzle P. The first air nozzle P referred to in the embodiment is a French air nozzle.

In addition, the second end 73 of the fixing pin 7 in this embodiment defines a cross-shaped slot 731 , which communicates with the through hole 71 . However, the main purpose of designing the second end 73 of the fixing pin 7 as a cross-shaped slot 731 in this embodiment is to facilitate locking and fixing the fixing pin 7 in the first inflatable passage 21, or loosening it from the body. 11 break away from, that is to say convenient for assembling or repairing, replacing. Also, as shown in FIG. 2 , the outer ring of the fixed pin 7 of the present embodiment is provided with an O-ring 74 circumferentially, which can prevent gas from flowing from the outer peripheral surface of the fixed pin 7 to the first inflation passage 21 of the main body 11. Leakage between inner peripheral surfaces.

On the other hand, the sealing slider 6 is accommodated in the switching valve chamber 5, and adopts a loose fit to slide freely. The sealing slider 6 of this embodiment is a cylindrical slider made of rubber, which includes a first The airtight surface 61 and the second airtight surface 62, the diameters of the first airtight surface 61 and the second airtight surface 62 are respectively larger than the first opening 511 on the first end 72 of the fixing pin 7 and the diameter on the second end surface 52. The diameter of the second opening 521 , so the first airtight surface 61 and the second airtight surface 62 can completely cover and seal the first opening 511 and the second opening 521 .

As shown in the figure, the sleeve joint 13 is locked and sleeved on the front end 111 of the body 11, and the sleeve joint 13 is provided with two radial through grooves 131, and two clamping blocks 15 are respectively accommodated in two diameters. Into the through groove 131 and can slide relative to each other, there are two reset components 16 arranged between the two clamping blocks 15, and give the two clamping blocks 15 the force to stretch away from each other; the present embodiment The reset assembly 16 is a spring. Furthermore, in this embodiment, the surface of each clamping block 15 facing the first inflatable channel 21 includes engaging teeth 151 for engaging the external thread of the first air nozzle P. As shown in FIG.

In addition, a sleeve 14 is shown in the figure, which is sleeved on the sleeve joint 13, and the inner ring surface of the sleeve 14 includes a step 140, and the step 140 will drive the two clamping blocks 15 toward each other, or allow They are moved away from each other by the spreading force of the two reset components 16 . In addition, sealing rings, namely, a front sealing ring 83 and a rear sealing ring 84 are provided at the front and back of the two radial through grooves 131 . Among them, the front sealing ring 83 is arranged on the socket joint 13, and the rear sealing ring 84 is arranged on the body 11, and the main function of the front sealing ring 83 and the rear sealing ring 84 is to prevent gas from flowing through the radial through groove 131 and from the sleeve joint 13 and Leakage between the sleeves 14 or between the body 11 and the sleeve 14 .

Also, the figure shows a front air-tight ring 85, which is arranged in the sleeve joint 13. The main function of the front air-tight ring 85 is to prevent gas from leaking from the gap between the first gas nozzle P and the sleeve joint 13. On the whole, the sleeve joint 13 , the front air-tight ring 85 and the sleeve 14 constitute the first air nozzle connecting end 2 , which is used to connect the first air nozzle P, that is, the French-style air nozzle.

The following is a brief description of the operating principle of the dual-purpose air nozzle joint in this embodiment. Please refer to FIG. 4 first. FIG. 4 is a cross-sectional view of a preferred embodiment of the present invention when it is connected to an American-style valve. As shown in the figure, when the second air nozzle S is coupled to the second air nozzle connection end 3, the outer thread of the American-style air nozzle is screwed to the inner thread of the cap 115, and the second air nozzle S The front edge abuts against the rear airtight ring 114 to form airtight, and the convex part 113 abuts against the opening and closing valve S1 of the second air nozzle S, thereby opening the opening and closing valve S1, so that the second air nozzle S and the inside of the joint Form communication; wherein, in order to facilitate the display of the opening and closing valve S1 of the second air nozzle S, the front end of the second air nozzle S is taken as a partial section.

At this time, because the gas pressure higher than 1 atmosphere in the second gas nozzle S is connected to the second inflatable passage 31, the second gas nozzle S will generate air flow into the joint, and push the sealing slider 6 toward the opening of the switching valve chamber 5 The first end surface 51 slides and seals the first opening 511 to prevent gas from leaking through the first inflatable channel 21 . Then, start to inflate, that is, the inflated airflow from the air pressure source passes through the air inlet 4 and the air passage 121 of the air pressure source connector 12 and the ventilation ring groove 116 of the body 11, the switching valve chamber 5, the second inflation passage 31 and the radial passage. The hole 110 inflates the second gas nozzle S.

However, the above operation description is based on the condition that the second gas nozzle S still contains gas, if there is no gas in the second gas nozzle S, that is, when the pressure in the first gas nozzle S is less than or equal to 1 atmosphere , the operation of the dual-purpose air nozzle joint of the present embodiment is described as follows.

When the second air nozzle S is coupled to the second air nozzle connection end 3, because there is no gas in the second air nozzle S or there is not enough air pressure to push the sealing slider 6, and when directly inflated, the air from the intake air The airflow at the port 4 will flow out from the first inflation channel 21 and the second inflation channel 31 respectively. Because the second air nozzle S and the tire (not shown in the figure) are connected to the second inflation channel 31, when the pressure in the tire is higher than or equal to 1 atmosphere, more than half of the inflation air flow will pass through the first inflation. The channel 21 flows out, and the outflowing air flow will drive the sealing slider 6 to move to the first end surface 51 of the switching valve chamber 5 and seal the first opening 511 and the first inflation channel 21 . Next, the inflation airflow will directly fill the second air nozzle S, and as the pressure in the second air nozzle S continues to rise, the internal air pressure of the second air nozzle S will also continuously drive the sealing slider 6 to seal The first inflatable channel 21 prevents gas from leaking out of the first inflatable channel 21 .

On the other hand, the description of the operation of connecting the dual-purpose air nozzle joint to the French air nozzle in this embodiment is as follows, please refer to FIG. Sectional view. When the first air nozzle P is to be connected, the sleeve 14 is operated to slide toward the connecting end 3 of the second air nozzle. At this time, the clamping block 15 will move radially outward to facilitate the insertion of the first air nozzle P. However, when the first air nozzle P is inserted into the connecting end 2 of the first air nozzle, the sleeve 14 is operated to slide in the direction of the first air nozzle P, so that the engaging teeth 151 on the clamping block 15 bite the French air nozzle external thread. At this time, the front air-tight ring 85 will form an airtight seal with the outer peripheral surface of the first air nozzle P. As shown in FIG.

Next, slightly rotate the sleeve 14 for about half a turn, and the components including the body 11 and the sleeve joint 13 will also rotate accordingly, so that the engaging teeth 151 drive the engaged first air nozzle P to approach the fixed pin 7 to ensure that the first air nozzle P is engaged. The front end of an air nozzle P contacts the second end 73 of the fixing pin 7 , and then the opening and closing valve P1 of the first air nozzle P is opened, so that the inside of the first air nozzle P communicates with the first inflation channel 21 .

At this time, because the gas pressure higher than 1 atmosphere in the first gas nozzle P is connected to the first inflation channel 21, the first gas nozzle P will generate air flow into the joint, and push the sealing slider 6 toward the valve chamber 5. The second end surface 52 slides and seals the second opening 521 to prevent gas from leaking through the second inflatable channel 31 . Then, start to inflate, that is, the inflated airflow from the air pressure source passes through the air inlet 4 and the air channel 121 of the air pressure source connector 12 and the air ring groove 116 of the main body 11, the switch valve chamber 5 and the first inflatable channel 21 to the first Air nozzle P is inflated.

However, the above operation description is based on the condition that the first gas nozzle P still contains gas, if there is no gas in the first gas nozzle P, that is, when the pressure in the first gas nozzle P is less than or equal to 1 atmosphere , the operation of the dual-purpose air nozzle joint of the present embodiment is described as follows.

When the first air nozzle P is coupled to the first air nozzle connection end 2, because there is no gas in the first air nozzle P or there is not enough air pressure to push the sealing slider 6, and when directly inflated, the air from the intake air The airflow at the port 4 will flow out from the first inflation channel 21 and the second inflation channel 31 respectively. Because the first inflation channel 21 is connected with the first air nozzle P and the tire (not shown), so when the pressure in the tire is higher than or equal to 1 atmospheric pressure, more than half of the inflation air flow will first pass through the second The inflatable channel 31 flows out, and the outflowing air flow will drive the sealing slider 6 to seal the second inflatable channel 31, and the next inflatable air flow will directly fill the first air nozzle P, and with the first air nozzle P The internal pressure continues to rise, and the internal air pressure will also continuously drive the sealing slider 6 to seal the second inflatable passage 31, preventing gas from leaking out from the second inflatable passage 31.

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the utility model should be determined by the claims, rather than limited to the above-mentioned embodiments.

Symbol Description

11 Body

110 radial through hole

111 front end

112 backend

113 Convex

114 Rear airtight ring

115 cap

116 Vent ring groove

117 Seal ring groove

12 Air pressure supply connection

121 airway

122 pressure relief valve

13 sockets

131 radial through groove

14 sleeve

140 steps

15 clips

151 occlusal teeth

16 Reset component

2 Connecting end of the first air nozzle

21 The first inflation channel

3 Connecting end of the second valve

31 Second inflation channel

4 air inlets

5 switching valve chamber

51 First end face

511 First opening

52 Second end face

521 Second opening

53 Vent

6 sealing slider

61 The first airtight surface

62 Second airtight surface

7 fixing pin

71 through hole

72 first end

73 second end

731 cross slot

74 O-ring

81,82 sealing ring

83 front sealing ring

84 rear sealing ring

85 front air seal ring

P first valve

P1 opening and closing valve

S Second valve

S1 On-off valve.

Claims (11)

1. A dual-purpose air nozzle joint, comprising: a first gas nozzle connection end, which includes a first inflation channel; the second gas nozzle connection end, which includes a second gas charging channel; an air inlet for connection to a source of air pressure; The switch valve chamber is connected to the first inflatable passage, the second inflatable passage, and the air inlet. The switch valve chamber includes a first end face and a second end face. The first end face is provided with a first opening. The first end face is provided with a first opening. Two end surfaces are provided with second openings, the first opening communicates with the first inflatable channel, and the second opening communicates with the second inflatable channel; A sealing slider, which is accommodated in the switching valve chamber and can slide freely; and A fixed pin, which includes a through hole, a first end and a second end, the through hole runs through the first end and the second end, the fixed pin is arranged in the first inflatable channel, and the first end extends into the switch a valve chamber, the end surface of the first end constitutes the first end surface; Wherein, when the connecting end of the first air nozzle is coupled to the first air nozzle, the opening and closing valve of the first air nozzle pushes against the second end of the fixing pin to open the opening and closing valve, and the opening and closing valve from the first air nozzle The air flow from the nozzle pushes the sealing slider to seal the second inflation channel, and the inflation air flow from the air pressure source inflates the first air nozzle through the air inlet, the switching valve chamber and the first inflation channel; Wherein, when the connecting end of the second air nozzle is coupled to the second air nozzle, the air flow from the second air nozzle pushes the sealing slider to seal the first inflation passage, and the inflation air flow from the air pressure source passes through The air inlet, the switching valve chamber and the second air charging channel inflate the second air nozzle. 2. The dual-purpose gas nozzle joint according to claim 1, wherein when the first gas nozzle connection end is coupled to the first gas nozzle, and the pressure in the first gas nozzle is about 1 atmosphere, the More than half of the airflow at the air inlet will first flow out through the second inflatable channel, and the sealing slider will move and seal the second inflatable channel; after inflating the first air nozzle, the The air pressure will continuously drive the sealing slider to seal the second inflatable channel; when the second air nozzle connection end is coupled to the second air nozzle, and the pressure inside the second air nozzle is about 1 atmosphere , more than half of the airflow from the air inlet will first flow out through the first inflatable channel, and the sealing slider will move and seal the first inflatable channel; after inflating the second air nozzle, and from the second The air pressure of the air nozzle will continuously drive the sealing slider to seal the first air-filling channel. 3. The dual-purpose air nozzle joint according to claim 1, wherein the switching valve chamber is a barrel-shaped chamber; the sealing slider is a cylindrical slider, which includes a first airtight surface and a second airtight surface The diameters of the first airtight surface and the second airtight surface are respectively larger than the diameters of the first opening and the second opening. 4 . The dual-purpose air nozzle joint as claimed in claim 3 , further comprising a body, the first inflation channel is disposed in the body, and the fixing pin is screwed to be fixed to the body. 5. The dual-purpose air nozzle joint as claimed in claim 4, further comprising an O-ring disposed between the fixing pin and the body. 6. The dual-purpose air nozzle joint according to claim 4 or 5, further comprising an air pressure source connector; the second inflation channel and the switching valve chamber are arranged in the body, and the air pressure source connector is assembled in the body ; The side wall of the switching valve chamber is provided with at least one air hole, which communicates with the air inlet; An air port, the other end of the air channel communicates with the at least one air hole of the switching valve chamber; the pressure relief valve can selectively communicate the air channel to the atmosphere. 7. The dual-purpose gas nozzle joint according to claim 6, which further comprises two sealing rings, the outer ring of the main body is provided with a ventilation ring groove and two sealing ring grooves, and the ventilation ring groove is arranged between the Between the two seal ring grooves, the vent ring groove communicates with the air channel and the at least one vent hole; the two seal rings are respectively arranged in the two seal ring grooves so that the outer ring circumferential surface of the body is in contact with the at least one vent hole. Airtightness is formed between the circumferential surfaces of the inner ring of the air pressure source connecting piece. 8. The dual-purpose air nozzle joint according to claim 6, further comprising a rear air-tight ring and a cap, the body includes a front end and a rear end, the rear end includes a convex portion, the cap is assembled on the rear end, The rear air-tight ring is sleeved on the protrusion and interposed between the cap and the rear end. 9. The dual-purpose air nozzle joint as claimed in claim 8, wherein the second inflation channel is disposed at the rear end of the body, and the protrusion defines at least one radial through hole, which communicates with the second inflation channel ; Wherein, when the second gas nozzle is connected to the connection end of the second gas nozzle, the front edge of the second gas nozzle abuts against the rear air-tight ring, and the convex portion abuts against the opening and closing valve of the second gas nozzle , and the inflation airflow from the air pressure source passes through the air inlet, the air channel, the at least one air hole, the switching valve chamber, the second inflation channel and the at least one radial through hole to inflate the second air nozzle . 10. A dual-purpose air nozzle joint, comprising: a body, which includes a first inflation channel, a second inflation channel, and a switching valve chamber, the switching valve chamber is interposed between the first inflation channel and the second inflation channel and communicates with each other; An air pressure source connector, which is assembled on the body, the air pressure source connector includes an air passage and an air inlet, the air passage is connected to the switching valve chamber and the air inlet, and the air inlet is used to connect to the air pressure source; a sealing slider, which is accommodated in the switching valve chamber and can slide freely; and A fixed pin, which includes a through hole, a first end and a second end, the through hole runs through the first end and the second end, the fixed pin is arranged in the first inflatable channel, and the first end extends into the switch Valve chamber, the second end is used to push against the opening and closing valve of the air nozzle. 11. A dual-purpose air nozzle joint, comprising: The main body includes a first inflatable passage, a second inflatable passage and a switching valve chamber; the switching valve chamber is a barrel-shaped chamber, which includes a first end face and a second end face, the first end face is provided with a first opening, and the first end face is provided with a first opening. Two end surfaces are provided with second openings, the first opening communicates with the first inflatable channel, and the second opening communicates with the second inflatable channel; An air pressure source connector, which is assembled on the body, the air pressure source connector includes an air inlet, which is used to connect to the air pressure source and communicate with the switch valve chamber of the body; a sealing slider, which is accommodated in the switching valve chamber; and A fixed pin, which includes a through hole, a first end and a second end, the through hole runs through the first end and the second end, the fixed pin is arranged in the first inflatable channel, and the first end extends into the switch a valve chamber, the end surface of the first end constitutes the first end surface; Wherein, when the first inflatable passage is coupled with the first air nozzle, the air flow from the first air nozzle pushes the sealing slider to seal the second opening of the second end face; when the second inflatable passage is coupled When the second air nozzle is connected, the air flow from the second air nozzle pushes the sealing slider to seal the first opening of the first end surface.