Gas filling gun

Abstract

The utility model discloses a gas filling gun which comprises a gun body, a gas inlet button, a gas inlet connecting cylinder, a gas discharging button, a gas discharging connecting cylinder and a circuit board. A gas filling channel is arranged in the gun body; the air inlet cavity is separated from the air outlet cavity; an air inlet pressing assembly is arranged on the inner side of the air inlet button; the gas inlet connecting cylinder is connected with a gas inlet cavity of the gas filling channel; the air inlet pressing assembly is arranged in the air inlet connecting cylinder in a penetrating mode. A connecting cylinder air outlet is formed in the side wall of the air inlet connecting cylinder, the connecting cylinder air outlet is communicated with a connecting pipe, and the other end of the connecting pipe is communicated with the air outlet cavity; a deflation pressing assembly is arranged on the inner side of the deflation button; the deflation connecting cylinder is connected with the air outlet cavity; the deflation pressing assembly is arranged in the deflation connecting cylinder in a penetrating mode and blocks the air inlet of the deflation connecting cylinder. A display screen and an air pressure sensor are arranged on the circuit board, and the detection end of the air pressure sensor is communicated with the air outlet cavity. The gas filling gun is simple and convenient to operate and can detect the tire pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle accessories, and more specifically to a gas filling gun. Background Art

[0002] Vehicles travel on the ground via tires, and the amount of air in the pneumatic tire directly affects the friction between the tire and the ground, thereby affecting the vehicle's travel speed and ultimately affecting the effective output power of the power.

[0003] In this regard, when the tire pressure is low, the tire needs to be inflated to achieve an ideal tire pressure. At present, when inflating the tires of various vehicles, a trigger-type air gun is generally used. Since the trigger of the air gun simulates the trigger of a gun, the user needs to spread the thumb and other four fingers as far as possible when using it, which is inconvenient to operate.

[0004] Therefore, developing an air filling gun that is easy to operate and can detect tire pressure is a problem that those skilled in the art need to solve urgently. Utility Model Content

[0005] In view of this, the utility model provides an air filling gun which is easy to operate and can detect tire pressure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A gas filling gun, comprising:

[0008] A gun body, wherein a gas supply channel is arranged inside the gun body; an air inlet is arranged at one end of the gas supply channel, and an air outlet is arranged at the other end; an end of the gas supply channel connected with the air inlet is an air inlet cavity, and an end of the gas supply channel connected with the air outlet is an air outlet cavity, and the air inlet cavity and the air outlet cavity are separated;

[0009] An air intake button, which is arranged outside the gun body; an air intake pressing assembly is arranged inside the air intake button;

[0010] An air inlet connecting cylinder, the air inlet connecting cylinder is connected to the air inlet cavity of the air filling passage; the air inlet connecting cylinder corresponds to the position of the air inlet button; the air inlet pressing assembly is arranged in the air inlet connecting cylinder and blocks the air inlet of the air inlet connecting cylinder; a connecting cylinder air outlet is provided on the side wall of the air inlet connecting cylinder, the connecting cylinder air outlet is connected to a connecting pipe, and the other end of the connecting pipe is connected to the air outlet cavity;

[0011] A deflation button, which is arranged outside the gun body; a deflation pressing assembly is arranged inside the deflation button;

[0012] A deflation connection tube, the deflation connection tube is connected to the air outlet cavity; the deflation connection tube corresponds to the position of the deflation button; the deflation pressing assembly is inserted into the deflation connection tube and blocks the air inlet of the deflation connection tube;

[0013] A circuit board is arranged inside the gun body, and a display screen and an air pressure sensor are arranged on the circuit board, and a detection end of the air pressure sensor is connected to the air outlet cavity.

[0014] The beneficial effect of adopting the above technical solution is that in the utility model, when inflating or deflating, the inflation and deflation process can be completed by only pressing the air intake button or the air deflation button, which is simpler to operate, and the air pressure of the tire can be detected by the air pressure sensor, which is convenient for the user to stop inflation or deflation in time and keep the tire pressure in the optimal state.

[0015] Preferably, the air intake pressing assembly comprises: an air intake pressing rod, an air intake pressing spring, a connecting cylinder and a threaded pressure cap; the interior of the connecting cylinder is hollow and is placed inside the air intake connecting cylinder; the air intake pressing rod is placed in the connecting cylinder, and a gap is left between the air intake pressing rod and the inner wall of the connecting cylinder; an exhaust port is provided on the side wall of the connecting cylinder, and the exhaust port is communicated with the air outlet of the connecting cylinder; the threaded pressure cap is threadedly connected to the air intake connecting cylinder, and the top of the connecting cylinder extends into the interior of the threaded pressure cap, and the threaded pressure cap presses the connecting cylinder; an air intake baffle is provided at the bottom of the air intake pressing rod, and the air intake baffle is placed outside the bottom end of the air intake connecting cylinder and abuts against the bottom end of the air intake connecting cylinder; one end of the air intake pressing spring is connected to the bottom end of the air intake pressing rod, and the other end is connected to the side wall of the air intake cavity. The air intake pressing rod is pressed down, the air intake pressing spring is compressed, the connecting tube is connected with the air intake chamber, the gas enters the connecting tube, and enters the air outlet chamber through the connecting tube, thus completing the inflation process.

[0016] Preferably, the outer sleeve of the air intake pressing rod is provided with a first sealing ring and a second sealing ring, wherein the first sealing ring is provided at the sealing connection between the air intake pressing rod and the top of the connecting tube; and the second sealing ring is provided at the sealing connection between the bottom of the air intake pressing rod and the air intake connecting tube. The first sealing ring can strengthen the sealing of the contact part between the air intake pressing rod and the connecting tube, and the second sealing ring can strengthen the sealing of the bottom of the air intake pressing rod and the air intake connecting tube, so as to prevent air leakage when inflation is not required.

[0017] Preferably, the deflation pressing assembly includes: a deflation pressing rod and a deflation pressing spring; the deflation pressing rod is placed in the deflation connecting tube, and a gap is left between the deflation pressing rod and the inner wall of the deflation connecting tube; a deflation baffle is provided at the bottom of the deflation pressing rod, and the deflation baffle is placed outside the bottom end of the deflation connecting tube and abuts against the bottom end of the deflation connecting tube; the deflation pressing spring is sleeved on the outside of the deflation pressing rod. When the deflation pressing rod is pressed down, the deflation pressing spring is compressed, and the deflation connecting tube is connected to the air outlet cavity to realize the deflation process. When inflation is completed, under the elastic force of the deflation pressing spring, the deflation baffle is pressed against the bottom end of the deflation connecting tube, and a sealing effect is achieved by pressing the third sealing ring to prevent leakage when deflation is not needed.

[0018] Preferably, a recessed portion recessed inward is provided on the outer wall of the deflation pressing rod, the deflation pressing spring is placed in the recessed portion, and the top is connected to the step position of the recessed portion; a limiting plate is provided on the inner wall of the deflation connecting tube, and the bottom of the deflation pressing spring is connected to the limiting plate.

[0019] Preferably, a third sealing ring is provided at the contact portion between the deflation baffle and the bottom of the deflation connection tube. The third sealing ring can enhance the sealing performance of the connection between the deflation connection tube and the deflation pressing rod.

[0020] Preferably, the outlet cavity is connected to a detection cavity, and the other end of the detection cavity is connected to the detection end of the air pressure sensor. The detection cavity is convenient for connecting the outlet cavity with the air pressure sensor and realizing the air pressure sensor to detect the air pressure inside the tire.

[0021] Preferably, the air inlet of the gun body is connected to an air inlet connector, and the air outlet of the gun body is connected to an air outlet connector.

[0022] Preferably, the outlet connector is rotatably connected to an outlet pipe, and the other end of the outlet pipe is connected to an outlet nozzle. The outlet pipe is rotatably connected to the outlet connector, which is convenient for connecting to the air inlet of the tire and convenient for observing the air pressure.

[0023] A lighting lamp is installed on the side wall of the gun body, and the lighting lamp is connected to the circuit board. The lighting lamp can play a lighting role at night or in a dark place.

[0024] Preferably, a charging socket is provided on the side wall of the gun body, and the charging socket is connected to the circuit board; a battery is provided inside the gun body, and the battery is connected to the circuit board. The existing gas gun battery needs to be replaced after it runs out of power, and frequent battery replacement will cause waste and environmental pollution. In the utility model, the battery can be charged through the charging socket, which can avoid the problem of frequent battery replacement. It is not only convenient to use, but also can avoid waste and reduce environmental pollution.

[0025] Preferably, a groove is provided at a position of the gun body corresponding to the display screen, and the provision of the groove facilitates observation of the air pressure value on the display screen.

[0026] It can be seen from the above technical solution that, compared with the prior art, the utility model discloses a gas filling gun, which has the following beneficial effects:

[0027] (1) In the present invention, the inflation and deflation process can be realized by directly pressing the air intake button or the air deflation button, which makes the operation simpler;

[0028] (2) The air pressure of the tire can be detected by the air pressure sensor, and the air outlet pipe is rotatably connected to the air outlet connector, which not only makes it convenient for the user to connect the air outlet pipe to the tire, but also makes it convenient to adjust the angle of the display screen to observe the air pressure value;

[0029] (3) A lighting lamp is provided on the side wall of the gun body, which can provide lighting at night or in dark places;

[0030] (4) A charging socket is provided on the back of the gun body, so that the battery can be charged in time, reducing the replacement of batteries. This is not only convenient to use, but also can avoid waste and reduce pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 The accompanying drawing is a schematic diagram of the structure of the gas filling gun provided by the utility model;

[0033] Figure 2 The accompanying drawing is a top view of the gas filling gun provided by the utility model;

[0034] Figure 3 The accompanying drawings are provided by the utility model Figure 2 Sectional view at AA in the middle;

[0035] Figure 4 The accompanying drawings are provided by the utility model Figure 3 A magnified view of the structure at B in the middle;

[0036] Figure 5 The accompanying drawing is a structural schematic diagram of the back side of the gas filling gun provided by the utility model;

[0037] Figure 6 The accompanying drawing is a schematic diagram of the internal structure of the back side of the gas filling gun provided by the utility model.

[0038] Among them, in the figure,

[0039] 1- Gun body;

[0040] 2-gas filling channel;

[0041] 21- air inlet cavity; 22- air outlet cavity;

[0042] 3- Air intake button;

[0043] 4-Intake pressing assembly;

[0044] 41-intake pressure rod; 42-intake pressure spring; 43-intake baffle; 44-connecting tube; 45-threaded gland; 46-exhaust port; 47-first sealing ring; 48-second sealing ring;

[0045] 5-intake connection tube; 6-connecting pipe; 7-deflation button;

[0046] 8-Deflate and press the assembly;

[0047] 81-deflation pressing rod; 82-deflation pressing spring; 83-deflation baffle; 84-recessed portion; 85-step; 86-third sealing ring;

[0048] 9- venting connection tube;

[0049] 91-limiting plate;

[0050] 10- Circuit board;

[0051] 101-display screen; 102-air pressure sensor;

[0052] 11-detection chamber; 12-air inlet connector; 13-air outlet connector; 14-air outlet pipe; 15-air outlet nozzle; 16-battery; 17-lighting lamp; 18-charging socket; 19-lighting switch button; 20-charging board; 201-protective cover. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] The utility model discloses a gas filling gun, comprising:

[0055] The gun body 1 has a gas supply passage 2 disposed therein; one end of the gas supply passage 2 is provided with an air inlet, and the other end is provided with an air outlet; the end of the gas supply passage 2 connected with the air inlet is an air inlet cavity 21, and the end of the gas supply passage 2 connected with the air outlet is an air outlet cavity 22, and the air inlet cavity 21 and the air outlet cavity 22 are separated;

[0056] An air intake button 3 is arranged outside the gun body 1; an air intake pressing assembly 4 is arranged inside the air intake button 3;

[0057] The air inlet connecting tube 5 is connected to the air inlet cavity 21 of the air filling passage 2; the air inlet connecting tube 5 corresponds to the position of the air inlet button 3; the air inlet pressing assembly 4 is arranged in the air inlet connecting tube 5 and blocks the air inlet of the air inlet connecting tube 5; the side wall of the air inlet connecting tube 5 is provided with a connecting tube air outlet, and the connecting tube air outlet is connected with a connecting pipe 6, and the other end of the connecting pipe 6 is connected with the air outlet cavity 22;

[0058] A deflation button 7 is arranged outside the gun body 1; a deflation pressing assembly 8 is arranged inside the deflation button 7;

[0059] The deflation connection tube 9 is connected to the air outlet cavity 22; the deflation connection tube 9 corresponds to the position of the deflation button 7; the deflation pressing assembly 8 is inserted into the deflation connection tube 9 and blocks the air inlet of the deflation connection tube 9;

[0060] The circuit board 10 is arranged inside the gun body 1, and a display screen 101 and an air pressure sensor 102 are arranged on the circuit board 10, and the detection end of the air pressure sensor 102 is connected to the air outlet cavity 22. A plus sign is drawn on the surface of the air inlet button 3, and a minus sign is drawn on the surface of the air deflation button 7. Inflation and deflation can be achieved by pressing only, which can improve the convenience of operation.

[0061] In order to further optimize the above technical solution, the air intake pressing assembly 4 includes: an air intake pressing rod 41, an air intake pressing spring 42, a connecting tube 44 and a threaded gland 45; the connecting tube 44 is hollow inside and is placed inside the air intake connecting tube 5; the air intake pressing rod 41 is placed inside the connecting tube 44, and a gap is left between the air intake pressing rod 41 and the inner wall of the connecting tube 44; the side wall of the connecting tube 44 is provided with an exhaust port 46, and the exhaust port 46 is connected to the air outlet of the connecting tube ; The threaded gland 45 is threadedly connected to the air inlet connecting tube 5, and the top of the connecting tube 44 extends into the interior of the threaded gland 45, and the threaded gland 45 presses the connecting tube 44 tightly; the bottom of the air inlet pressing rod 41 is provided with an air inlet baffle 43, which is placed outside the bottom end of the air inlet connecting tube 5 and abuts against the bottom end of the air inlet connecting tube 5; one end of the air inlet pressing spring 42 is connected to the bottom end of the air inlet pressing rod 41, and the other end is connected to the side wall of the air inlet cavity 21. After the bottom of the air inlet pressing rod 41 is in sealing contact with the air inlet connecting tube 5, the gas passes through the gap between the air inlet pressing rod 41 and the inner wall of the connecting tube 44, and the gas passes through the exhaust port 46 of the connecting tube 44 and the connecting tube outlet of the air inlet connecting tube 5, and the gas is discharged, and then passes through the connecting pipe 6, and then enters the outlet cavity 22 to inflate the tire.

[0062] In order to further optimize the above technical solution, the outer sleeve of the air intake pressing rod 41 is provided with a first sealing ring 47 and a second sealing ring 48. The first sealing ring 47 is arranged at the sealing connection between the air intake pressing rod 41 and the top of the connecting tube 44; the second sealing ring 48 is arranged at the sealing connection between the bottom of the air intake pressing rod 41 and the air intake connecting tube 5.

[0063] In order to further optimize the above technical solution, the deflation pressing assembly 8 includes: a deflation pressing rod 81 and a deflation pressing spring 82; the deflation pressing rod 81 is placed in the deflation connecting tube 9, and a gap is left between the deflation pressing rod 81 and the inner wall of the deflation connecting tube 9; a deflation baffle 83 is provided at the bottom of the deflation pressing rod 81, and the deflation baffle 83 is placed outside the bottom end of the deflation connecting tube 9 and abuts against the bottom end of the deflation connecting tube 9; the deflation pressing spring 82 is sleeved on the outside of the deflation pressing rod 81. The gas passes through the gap between the deflation pressing rod 81 and the inner wall of the deflation connecting tube 9, and is discharged from the gap between the top of the deflation pressing rod 81 and the deflation connecting tube 9. When the deflation button 7 is pressed, the deflation operation can be achieved without pressing the deflation pressing rod 81 to the bottom.

[0064] In order to further optimize the above technical solution, a recessed portion 84 is provided on the outer wall of the deflation pressing rod 81, and the deflation pressing spring 82 is placed in the recessed portion 84, and the top is connected to the step 85 of the recessed portion 84; a limit plate 91 is provided on the inner wall of the deflation connecting tube 9, and the bottom of the deflation pressing spring 82 is connected to the limit plate 91. The outside of the deflation connecting tube 9 is provided with an external thread, and the deflation connecting tube 9 is threadedly connected to the side wall of the air outlet cavity 22 and communicates with the air outlet cavity 22.

[0065] In order to further optimize the above technical solution, a third sealing ring 86 is provided at the contact portion between the deflation baffle 83 and the bottom of the deflation connection tube 9. The third sealing ring 86 plays a sealing role, and the third sealing ring 86 can prevent leakage from occurring at the connection between the deflation baffle 83 and the deflation connection tube 9 during inflation.

[0066] In order to further optimize the above technical solution, the air outlet cavity 22 is connected to the detection cavity 11 , and the other end of the detection cavity 11 is connected to the detection end of the air pressure sensor 102 .

[0067] In order to further optimize the above technical solution, the air inlet of the gun body 1 is connected to an air inlet connector 12, and the air outlet of the gun body 1 is connected to an air outlet connector 13. The air inlet connector 12 and the air outlet nozzle 15 are convenient for connecting with the air pump and the tire.

[0068] In order to further optimize the above technical solution, the air outlet connector 13 is rotatably connected to the air outlet pipe 14 , and the other end of the air outlet pipe 14 is connected to the air outlet nozzle 15 .

[0069] In order to further optimize the above technical solution, a lighting lamp 17 is installed on the side wall of the gun body 1, and the lighting lamp 17 is connected to the circuit board 10. A lighting switch button 19 is set on the surface of the gun body 1, and the lighting switch button 19 is connected to the circuit board 10, and the lighting switch button 19 controls the opening and closing of the lighting lamp 17.

[0070] In order to further optimize the above technical solution, a charging socket 18 is provided on the side wall of the gun body 1, and the charging socket 18 is connected to the circuit board 10; a battery 16 is provided inside the gun body 1, and the battery 16 is connected to the circuit board 10. A charging board 20 is provided inside the gun body 1, and the charging socket 18 is electrically connected to the charging board 20, and the charging board is electrically connected to the circuit board 10, thereby realizing charging of the battery 16. The electrical connection can be in the form of a wire connection.

[0071] In order to further optimize the above technical solution, a sealing plug is provided at the position of the charging socket 18. When not charging, the sealing plug will seal the charging socket 18, effectively playing a role of dustproof and waterproof.

[0072] In order to further optimize the above technical solution, a protective cover 201 is provided on the outside of the gun body 1 , and anti-slip patterns protruding outward are provided on the surface of the protective cover 201 .

[0073] In order to further optimize the above technical solution, a groove is provided at a position corresponding to the gun body 1 and the display screen 101 .

[0074] Working principle:

[0075] When inflation is required, the air inlet button 3 is pressed, and the air inlet pressing rod 41 is pressed downward, compressing the air inlet pressing spring 42, so that the contact portion between the air inlet baffle 43 and the air inlet connecting tube 5 is released from the air inlet cavity 21 into the connecting tube 44, and then passes through the exhaust port 46, the connecting tube outlet, and the connecting tube 6 in sequence into the air outlet cavity 22, thus completing the inflation process;

[0076] When deflation is required, the deflation pressing assembly 8 is pressed, thereby pressing down the deflation pressing rod 81, compressing the deflation pressing spring 82, so that the contact portion between the deflation baffle 83 and the deflation connecting tube 9 is released from the seal, and the gas in the tire enters the deflation connecting tube 9 from the air outlet cavity 22, and is then discharged from the gap between the deflation connecting tube 9 and the deflation pressing rod 81, completing the deflation process.

[0077] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0078] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gas filling gun, characterized in that: include: A gun body (1), wherein an air supply channel (2) is arranged inside the gun body (1); an air inlet is arranged at one end of the air supply channel (2), and an air outlet is arranged at the other end; the end of the air supply channel (2) communicating with the air inlet is an air inlet cavity (21), and the end of the air supply channel (2) communicating with the air outlet is an air outlet cavity (22); the air inlet cavity (21) and the air outlet cavity (22) are separated; An air intake button (3), the air intake button (3) being arranged outside the gun body (1); an air intake pressing assembly (4) being arranged inside the air intake button (3); An air intake connecting tube (5), the air intake connecting tube (5) is connected to the air intake cavity (21) of the air filling passage (2); the air intake connecting tube (5) corresponds to the position of the air intake button (3); the air intake pressing assembly (4) is inserted into the air intake connecting tube (5) and blocks the air intake port of the air intake connecting tube (5); a connecting tube air outlet is provided on the side wall of the air intake connecting tube (5), the connecting tube air outlet is connected to a connecting pipe (6), and the other end of the connecting pipe (6) is connected to the air outlet cavity (22); A deflation button (7), the deflation button (7) being arranged outside the gun body (1); a deflation pressing assembly (8) being arranged inside the deflation button (7); A deflation connection tube (9), the deflation connection tube (9) being connected to the air outlet cavity (22); the deflation connection tube (9) corresponding to the position of the deflation button (7); the deflation pressing assembly (8) being inserted into the deflation connection tube (9) and blocking the air inlet of the deflation connection tube (9); A circuit board (10), the circuit board (10) being arranged inside the gun body (1), and a display screen (101) and an air pressure sensor (102) being arranged on the circuit board (10), and a detection end of the air pressure sensor (102) being connected to the air outlet cavity (22).

2. A gas filling gun according to claim 1, characterized in that: The air intake pressing assembly (4) comprises: an air intake pressing rod (41), an air intake pressing spring (42), a connecting tube (44) and a threaded pressure cap (45); the connecting tube (44) is hollow inside and is placed inside the air intake connecting tube (5); the air intake pressing rod (41) is placed inside the connecting tube (44), and a gap is left between the air intake pressing rod (41) and the inner wall of the connecting tube (44); an exhaust port (46) is provided on the side wall of the connecting tube (44), and the exhaust port (46) is communicated with the air outlet of the connecting tube; the threaded pressure cap (45) ) is threadedly connected to the air intake connecting tube (5), and the top of the connecting tube (44) extends into the interior of the threaded cover (45), and the threaded cover (45) presses the connecting tube (44); an air intake baffle (43) is provided at the bottom of the air intake pressing rod (41), and the air intake baffle (43) is placed outside the bottom end of the air intake connecting tube (5) and abuts against the bottom end of the air intake connecting tube (5); one end of the air intake pressing spring (42) is connected to the bottom end of the air intake pressing rod (41), and the other end is connected to the side wall of the air intake cavity (21).

3. A gas filling gun according to claim 2, characterized in that: The outer sleeve of the air intake pressing rod (41) is provided with a first sealing ring (47) and a second sealing ring (48); the first sealing ring (47) is arranged at the sealing connection between the air intake pressing rod (41) and the top of the connecting tube (44); the second sealing ring (48) is arranged at the sealing connection between the bottom of the air intake pressing rod (41) and the air intake connecting tube (5).

4. A gas filling gun according to claim 1, characterized in that: The deflation pressing assembly (8) comprises: a deflation pressing rod (81) and a deflation pressing spring (82); the deflation pressing rod (81) is disposed in the deflation connecting tube (9), and a gap is left between the deflation pressing rod (81) and the inner wall of the deflation connecting tube (9); a deflation baffle (83) is provided at the bottom of the deflation pressing rod (81), and the deflation baffle (83) is disposed outside the bottom end of the deflation connecting tube (9) and abuts against the bottom end of the deflation connecting tube (9); the deflation pressing spring (82) is sleeved on the outside of the deflation pressing rod (81).

5. A gas filling gun according to claim 4, characterized in that: The outer wall of the deflation pressing rod (81) is provided with a recessed portion (84) recessed inwardly, the deflation pressing spring (82) is placed in the recessed portion (84), and the top is connected to the step (85) position of the recessed portion (84); the inner wall of the deflation connecting tube (9) is provided with a limiting plate (91), and the bottom of the deflation pressing spring (82) is connected to the limiting plate (91).

6. A gas filling gun according to claim 5, characterized in that: A third sealing ring (86) is provided at the contact portion between the degassing baffle (83) and the bottom of the degassing connecting tube (9).

7. A gas filling gun according to claim 1, characterized in that: The air outlet cavity (22) is connected to a detection cavity (11), and the other end of the detection cavity (11) is connected to a detection end of the air pressure sensor (102).

8. A gas filling gun according to claim 1, characterized in that: The air inlet of the gun body (1) is connected to an air inlet connector (12), and the air outlet of the gun body (1) is connected to an air outlet connector (13); the air outlet connector (13) is rotatably connected to an air outlet pipe (14), and the other end of the air outlet pipe (14) is connected to an air outlet nozzle (15).

9. A gas filling gun according to claim 1, characterized in that: A lighting lamp (17) is installed on the side wall of the gun body (1), and the lighting lamp (17) is connected to the circuit board (10).

10. A gas filling gun according to claim 1, characterized in that: A charging socket (18) is provided on the side wall of the gun body (1), and the charging socket (18) is connected to the circuit board (10); a battery (16) is provided inside the gun body (1), and the battery (16) is connected to the circuit board (10).

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