Handheld tire inflation gun

Abstract

The utility model relates to the technical field of inflation guns, and discloses a handheld tire inflation gun which comprises a pressure control component, the bottom end of the pressure control component is communicated with a first air inlet pipe, and the top end of the pressure control component is communicated with an inflation pipe. The second air inlet pipe is connected with the first air inlet pipe through an arranged air filtering assembly, an air inlet nozzle is arranged at the bottom end of the second air inlet pipe, the air filtering assembly is arranged between the first air inlet pipe and the second air inlet pipe, a fixed inserting block is arranged in a filtering connecting block in the air filtering assembly, and the air inlet nozzle is arranged at the bottom end of the second air inlet pipe. A filter cotton net is arranged in the fixed insertion block and can be used for effectively filtering moisture, oil gas molecules and impurities contained in compressed gas passing through the gas inlet hole, so that the gas entering the pressure control part is ensured to be cleaner; and the damage of impurities contained in the compressed gas to a sensor arranged in the pressure control component is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of air gun technology, specifically a handheld tire air gun. Background Technology

[0002] With the increasing popularity of automobiles in China, the products for automobile assembly, repair, and maintenance are also being rapidly updated to adapt to the ever-growing automobile market. At the same time, the requirements for supporting products are becoming higher and higher, not only requiring ease of operation but also higher precision. The earliest auto tire inflator guns used an external pressure gauge. Later, for ease of use and viewing, handheld digital displays appeared, integrating the pressure display into the cavity. Because it is a handheld inflator gun, the air pressure value can be seen at any time when using the inflator gun anywhere.

[0003] A tire inflator gun disclosed in Chinese Patent Publication No. CN 216843284 U, as obtained through a search, includes a handle, an air inlet connector, an inflation hose, a trigger, a pressure gauge, a valve seat assembly, and a valve core assembly. The handle contains an air inlet channel, an inflation port, a first valve port, a first valve chamber, a second valve port, a second valve chamber, and a pressure detection channel. The air inlet connector is connected to the handle and communicates with the air inlet channel. The air inlet channel communicates with the first valve chamber through the first valve port. The first valve chamber communicates with the second valve chamber through the second valve port. The inflation port communicates with the first valve chamber. The inflation hose is connected to the handle and communicates with the inflation port. The pressure detection channel communicates with the second valve chamber. The pressure gauge is connected to the handle and communicates with the pressure detection channel. The valve seat assembly includes a valve seat and a valve stem. The valve seat is fixed to the handle, and the valve stem is movably disposed within the valve seat. The lower end of the valve stem extends into the first valve chamber through the second valve chamber, and the upper end of the valve stem extends out of the valve seat. The trigger is hinged to the handle and abuts against the upper end of the valve stem.

[0004] The air gun described in the aforementioned patent still has some shortcomings. To make it easier for users to inflate tires, existing handheld tire air guns are often equipped with pressure displays and sensors. However, most of these electronic components are concentrated inside the air gun's cavity. The compressed air connected to the air gun sometimes contains dust, moisture, or oil molecules. If these impurities are not effectively filtered, they will enter the air gun, damaging the pressure display and sensors installed inside and affecting the user's experience. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a handheld tire inflator, which solves the problem that existing handheld tire inflators are often equipped with pressure displays and sensors. However, these electronic components are mostly concentrated inside the inflator's cavity. The compressed air connected to the inflator sometimes contains dust, moisture, or oil molecules. If these impurities are not effectively filtered, they will enter the inflator, damaging the pressure display and sensors installed inside the gun and affecting the user's experience.

[0006] This utility model provides the following technical solution: a handheld tire inflator, including a pressure control component, the bottom end of which is connected to a first air inlet pipe, the top end of which is connected to an inflation pipe, the end of which is provided with an inflation nozzle, the bottom of which is provided with a second air inlet pipe, the second air inlet pipe and the first air inlet pipe being connected by a gas filter assembly, and the bottom end of which is provided with an air inlet nozzle;

[0007] The gas filtration assembly includes a filter connecting block disposed between the first air inlet pipe and the second air inlet pipe. A filter slot is provided on the side of the filter connecting block. Air inlet holes are provided on both the upper and lower side walls of the filter slot. A fixing block is inserted into the filter slot. A filter screen mounting hole is provided in the middle of the fixing block. A filter screen limiting groove is provided on the side wall of the filter screen mounting hole. Two filter screen limiting screws are symmetrically arranged on both sides of the bottom wall of the filter screen limiting groove. A filter cotton screen is inserted into the filter screen mounting hole. Two mounting holes are symmetrically provided on both sides of the filter cotton screen. The filter screen limiting screws pass through the mounting holes. A filter screen abutment rod is provided at the top of the filter cotton screen. Two fixing holes are symmetrically provided at both ends of the filter screen abutment rod. The fixing holes are all penetrated by the filter screen limiting screws. A fixing nut is fitted onto the top of each filter screen limiting screw.

[0008] Preferred technical solution 1: Two side connecting plates are symmetrically arranged on both sides of the filter connecting block, and two fastening screw holes are symmetrically opened on both sides of the end of the fixing plug.

[0009] Preferred technical solution 2: A fastening screw is inserted through the side connecting plate, and the end of the fastening screw is inserted into the fastening screw hole.

[0010] Preferred technical solution 3: The filter cotton mesh is funnel-shaped, and the height of the top of the filter cotton mesh is less than the depth of the filter mesh mounting hole.

[0011] This solution allows for smoother insertion of the fixing block into the filter slot.

[0012] Preferred technical solution four: The diameter of the bottom end of the filter cotton mesh is the same as the diameter of the filter mesh limiting groove.

[0013] This design allows the filter cotton mesh to be inserted into the filter mesh mounting hole and better supported by the bottom wall of the filter mesh limiting groove.

[0014] Preferred technical solution five: A sealing ring is sleeved on the outer side of the end of the fixing block.

[0015] This solution enables a more airtight seal when the fixing block is inserted into the filter slot.

[0016] Compared with the prior art, this utility model provides a handheld tire inflator gun, which has the following features:

[0017] Beneficial effects:

[0018] (1) This utility model provides a gas filter assembly between the first and second air inlets. The gas filter assembly has a fixed insert block in the filter connecting block and a filter cotton mesh in the fixed insert block. The filter cotton mesh can effectively filter the moisture, oil, gas molecules and impurities contained in the compressed gas passing through the air inlet, thereby ensuring that the gas entering the pressure control component is cleaner. This effectively avoids the impurities contained in the compressed gas from damaging the sensors in the pressure control component and ensures the long-term safe use of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 For the present utility model Figure 1 Schematic diagram of the exploded structure of the gas filtration assembly;

[0021] Figure 3 For the present utility model Figure 2 Enlarged view of the structure of the middle filter screen limiting groove;

[0022] Figure 4 For the present utility model Figure 2 Enlarged view of the structure of the middle filter cotton mesh.

[0023] In the diagram: 1. Pressure control component; 2. First air inlet pipe; 3. Inflation pipe; 4. Inflation nozzle; 5. Gas filter assembly; 6. Second air inlet pipe; 7. Air inlet nozzle;

[0024] 501. Filter connecting block; 502. Filter slot; 503. Air inlet; 504. Fixing block; 505. Filter screen mounting hole; 506. Filter screen limiting groove; 507. Filter screen limiting screw; 508. Filter cotton screen; 509. Mounting hole; 510. Filter screen abutment rod; 511. Fixing hole; 512. Fixing nut; 513. Side connecting plate; 514. Fastening screw hole; 515. Fastening screw. Detailed Implementation

[0025] Please see Figure 1-4 ,

[0026] Example 1: A handheld tire inflator includes a pressure control component 1, a first air inlet pipe 2 connected to the bottom end of the pressure control component 1, an inflation pipe 3 connected to the top end of the pressure control component 1, an inflation nozzle 4 provided at the end of the inflation pipe 3, a second air inlet pipe 6 provided at the bottom of the first air inlet pipe 2, the second air inlet pipe 6 and the first air inlet pipe 2 being connected by a gas filter assembly 5, and an air inlet nozzle 7 provided at the bottom end of the second air inlet pipe 6.

[0027] The gas filtration assembly 5 includes a filter connecting block 501 disposed between the first air inlet pipe 2 and the second air inlet pipe 6. A filter slot 502 is provided on the side of the filter connecting block 501. Air inlet holes 503 are provided on both the upper and lower side walls of the filter slot 502. A fixing block 504 is inserted into the filter slot 502. A filter screen mounting hole 505 is provided in the middle of the fixing block 504. A filter screen limiting groove 506 is provided on the side wall of the filter screen mounting hole 505. Two filter screen limiting screws 507 are symmetrically arranged on both sides of the bottom wall of the filter screen limiting groove 506. A filter cotton mesh 508 is inserted into the filter screen mounting hole 505. Two mounting holes 509 are symmetrically opened on both sides of the filter cotton mesh 508. The filter screen limiting screws 507 pass through the mounting holes 509.

[0028] The top of the filter cotton mesh 508 is provided with a filter mesh abutment rod 510. Two fixing holes 511 are symmetrically opened at both ends of the filter mesh abutment rod 510. The fixing holes 511 are all penetrated by the filter mesh limiting screw 507. The top of the filter mesh limiting screw 507 is fitted with a fixing nut 512. Two side connecting plates 513 are symmetrically arranged on both sides of the filter connecting block 501. Two fastening screw holes 514 are symmetrically opened on both sides of the end of the fixing block 504. Fastening screws 515 are inserted through the side connecting plates 513. The end of the fastening screw 515 is inserted into the fastening screw hole 514.

[0029] Example 2: The difference between this example and Example 1 is that the filter cotton mesh 508 is funnel-shaped, and the height of the top of the filter cotton mesh 508 is less than the depth of the filter mesh mounting hole 505.

[0030] This makes it easier for the fixing block 504 to be inserted into the filter slot 502.

[0031] Example 3: The difference between this example and Example 1 is that the diameter of the bottom end of the filter cotton mesh 508 is the same as the diameter of the filter mesh limiting groove 506.

[0032] This allows the filter cotton mesh 508 to be inserted into the filter mesh mounting hole 505 and better supported by the bottom wall of the filter mesh limiting groove 506.

[0033] Example 4: The difference between this example and Example 1 is that a sealing ring is provided on the outer side of the end of the fixing block 504.

[0034] This makes the sealing of the fixing block 504 into the filter slot 502 more tight.

[0035] In this embodiment, since existing handheld tire inflators are often equipped with pressure displays and sensors, most of these electronic components are concentrated inside the inflator's cavity. The compressed air connected to the inflator sometimes contains dust, moisture, or oil molecules. If these impurities are not effectively filtered, they will enter the inflator and damage the pressure display and sensors installed inside the gun, affecting the user's use.

[0036] In summary, in specific implementation, a gas filter assembly 5 is provided between the first air intake pipe 2 and the second air intake pipe 6. The air intake hole 503 in the gas filter assembly 5 allows compressed gas connected to the air intake nozzle 7 to enter the pressure control component 1 and be inflated into the tire through the inflation nozzle 4 at the end of the inflation pipe 3. When the compressed gas contains impurities, it will be filtered by the filter cotton mesh 508, effectively filtering out oil, moisture or dust contained in the gas, thereby ensuring that the gas inflated into the tire is cleaner.

[0037] During prolonged use, dust will accumulate on the filter screen 508. At this time, the user can pull out the fastening screw 515 inserted into the fastening screw hole 514, so that the fixing block 504 can be inserted into the filter slot 502 without restriction. Then, the user can quickly and easily pull out the filter screen 508 set in the filter slot 502. Then, by removing the fixing nut 512 from the top of the filter screen limiting screw 507, the user can quickly remove and clean the filter screen 508, making it more convenient for the user.

Claims

1. A hand-held tire inflator gun comprising a pressure control unit (1), characterized in that: The bottom end of the pressure control component (1) is connected to a first air inlet pipe (2), the top end of the pressure control component (1) is connected to an inflation pipe (3), the end of the inflation pipe (3) is provided with an inflation nozzle (4), the bottom of the first air inlet pipe (2) is provided with a second air inlet pipe (6), the second air inlet pipe (6) and the first air inlet pipe (2) are connected by a gas filter assembly (5), and the bottom end of the second air inlet pipe (6) is provided with an air inlet nozzle (7). The gas filtration assembly (5) includes a filter connecting block (501) disposed between the first air inlet pipe (2) and the second air inlet pipe (6). A filter slot (502) is provided on the side of the filter connecting block (501). Air inlets (503) are provided on both the upper and lower side walls of the filter slot (502). A fixing block (504) is inserted into the filter slot (502). A filter screen mounting hole (505) is provided in the middle of the fixing block (504). A filter screen limiting groove (506) is provided on the side wall of the filter screen mounting hole (505). Two filter screen limiting grooves (506) are symmetrically arranged on both sides of the bottom wall of the filter screen limiting groove (506). A filter screen limiting screw (507) is provided. A filter cotton screen (508) is inserted into the filter screen mounting hole (505). Two mounting holes (509) are symmetrically opened on both sides of the filter cotton screen (508). The filter screen limiting screw (507) passes through the mounting holes (509). A filter screen abutment rod (510) is provided at the top of the filter cotton screen (508). Two fixing holes (511) are symmetrically opened at both ends of the filter screen abutment rod (510). The fixing holes (511) are all penetrated by the filter screen limiting screw (507). A fixing nut (512) is fitted on the top of the filter screen limiting screw (507).

2. A hand-held tire inflator gun as defined in claim 1 wherein: The filter connecting block (501) has two symmetrically arranged side connecting plates (513) on both sides, and the fixed plug (504) has two symmetrically opened fastening screw holes (514) on both sides of its end.

3. A hand-held tire inflator gun as defined in claim 2 wherein: A fastening screw (515) is inserted through the side connecting plate (513), and the end of the fastening screw (515) is inserted into the fastening screw hole (514).

4. A handheld tire inflator according to claim 3, characterized in that: The filter cotton mesh (508) is funnel-shaped, and the height of the top of the filter cotton mesh (508) is less than the depth of the filter mesh mounting hole (505).

5. A handheld tire inflator according to claim 4, characterized in that: The diameter of the bottom end of the filter cotton mesh (508) is the same as the diameter of the filter mesh limiting groove (506).

6. A handheld tire inflator according to claim 5, characterized in that: A sealing ring is fitted on the outer side of the end of the fixed plug (504).

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