Air tightness detection tool for motorcycle fuel tank

Abstract

The utility model discloses a motorcycle fuel tank air tightness detection tool, which comprises a handle, a sealing plug, a telescopic shaft, a conical movable block, a sliding block, an O-shaped ring and a limit bolt, the front end of the handle is coaxially provided with the sealing plug, the center of the sealing plug is provided with a stepped hole, the handle is hollow and is internally provided with the telescopic shaft which is directly communicated with the stepped hole, and the sliding block is arranged in the telescopic shaft. A conical movable block coaxially connected with the telescopic shaft is arranged in the stepped hole, and a plurality of sliding blocks spliced with one another are arranged on the conical surface of the conical movable block in a surrounding mode. Through the above mode, according to the motorcycle fuel tank air tightness detection tool provided by the utility model, the interface is plugged through the sealing plug, the sliding block bound in the O-shaped ring is rapidly ejected out through the telescopic shaft, and the fuel tank is firmly clamped on the wall of the fuel tank through cooperation of the sliding block and the step part, so that the loading efficiency of an air tightness test is greatly improved; and the operation test difficulty is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of fuel tank testing equipment, and in particular to a tool for testing the air tightness of motorcycle fuel tanks. Background Technology

[0002] Motorcycle fuel tank caps are typically designed with a filler neck and a fuel outlet. The filler neck is used for adding fuel, and the fuel outlet is used to deliver fuel to the engine. Current technology usually incorporates a mating locator at the fuel outlet for sealing the connection. This locator serves to connect the fuel outlet line. During production testing, this locator is often used for airtightness testing. Typically, an operator manually attaches a cover plate with a polyurethane gasket to the locator, and then uses a screw and nut with an air gun to tighten it securely, thus sealing the fuel outlet. During testing, a leak tester inserts a connector through the filler neck and injects compressed air into the fuel tank to perform the airtightness test. After the test, another operator must remove the screw and nut. This entire testing process is time-consuming and labor-intensive, hindering efficient production and failing to meet production needs. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a tool for testing the air tightness of motorcycle fuel tanks. By sealing the interface with a sealing plug and using a telescopic shaft to quickly push out the slider bound in the O-ring, the fuel tank is firmly attached to the fuel tank wall by the cooperation of the slider and the step part, thereby greatly improving the loading efficiency of the air tightness test and effectively reducing the difficulty of operation and testing.

[0004] To solve the above-mentioned technical problems, the present invention provides a technical solution: a motorcycle fuel tank airtightness testing tool, including a handle, a sealing plug, a telescopic shaft, a conical movable block, a slider, an O-ring, and a limiting bolt. The sealing plug is coaxially disposed at the front end of the handle, and a stepped hole is formed in the center of the sealing plug. The handle is hollow and contains a telescopic shaft that passes through the stepped hole. The stepped hole contains a conical movable block that is coaxially connected to the telescopic shaft. Several interlocking sliders are arranged around the conical surface of the conical movable block. An O-ring is tightly bound around the outer periphery of the slider. A waist hole is formed on the slider, and a limiting bolt that is vertically connected to the sealing plug passes through the waist hole. A fuel tank wall support gap is formed between the slider and the sealing plug.

[0005] In a preferred embodiment of this utility model, the sealing plug is disc-shaped, and an outer sealing ring is inlaid on its outer circumference. The outer sealing ring is used to seal the detection interface of the mating oil tank.

[0006] In a preferred embodiment of this utility model, a plurality of inner sealing rings are nested on the telescopic shaft, and the inner sealing rings are fitted into the inner wall of the handle.

[0007] In a preferred embodiment of the present invention, the conical movable block is in the shape of a frustum of a cone, and the small end of the frustum of a cone extends out of the stepped hole.

[0008] In a preferred embodiment of this utility model, the slider is fan-shaped and the sliders are spliced ​​into a disc structure; when the slider is in the spliced ​​state, the area of ​​the disc structure is smaller than the surface area of ​​the front end of the sealing plug, and a step is formed between the disc structure and the sealing plug, the step being used to cooperate with the detection interface of the oil tank; when the slider is in the dispersed state, the area of ​​the disc structure is equal to the surface area of ​​the front end of the sealing plug, and a tank wall clamping gap is formed between the disc structure and the sealing plug, the tank wall clamping gap being used to clamp the inner and outer walls of the oil tank; the edge of the disc structure is provided with a groove for embedding the O-ring.

[0009] In a preferred embodiment of the present invention, the slider is provided with a conical surface that engages with the conical movable block, and the taper of the conical surface is consistent with that of the conical movable block.

[0010] In a preferred embodiment of the present invention, the sealing plug is provided with a guide groove, the slider is provided with a protruding guide portion, the guide portion is fitted in the guide groove, the guide groove extends outward from the handle as the axis to the edge of the sealing plug, and the guide grooves are evenly distributed.

[0011] In a preferred embodiment of the present invention, the waist hole is in a straight line shape, and the waist hole and the guide groove are aligned and distributed in the same direction.

[0012] In a preferred embodiment of the present invention, a threaded hole for matching limit bolts is provided in the guide groove.

[0013] In a preferred embodiment of this utility model, a pressure plate is threaded through the limiting bolt, the pressure plate covers all the sliders, and the pressure plate is used to adjust the spacing of the tank wall clamping gap.

[0014] The beneficial effects of this utility model are as follows: The motorcycle fuel tank airtightness testing tool provided by this utility model seals the interface with a sealing plug and uses a telescopic shaft to quickly push out the slider bound in the O-ring. The cooperation between the slider and the step part is used to firmly hold the fuel tank to the fuel tank wall, thereby greatly improving the loading efficiency of the airtightness test and effectively reducing the difficulty of operation and testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0016] Figure 1 This is an overall structural diagram of a preferred embodiment of the motorcycle fuel tank airtightness testing tool of this utility model;

[0017] Figure 2 This is a cross-sectional view of the handle of a preferred embodiment of the motorcycle fuel tank airtightness testing tool of this utility model;

[0018] Figure 3 This is an exploded view of a preferred embodiment of a motorcycle fuel tank airtightness testing tool according to this utility model;

[0019] Figure 4 This is a schematic diagram before installation of a preferred embodiment of the motorcycle fuel tank airtightness testing tool of this utility model;

[0020] Figure 5 This is a schematic diagram of the installation of a preferred embodiment of the motorcycle fuel tank airtightness testing tool of this utility model. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figure 1-5 As shown, the embodiments of this utility model include:

[0023] A motorcycle fuel tank airtightness testing tool includes a handle 1, a sealing plug 2, a telescopic shaft 3, a conical movable block 4, a slider 5, an O-ring 6, and a limiting bolt 7. The sealing plug 2 is coaxially mounted on the front end of the handle 1, and a stepped hole 8 is formed in the center of the sealing plug 2. The handle 1 is hollow and contains a telescopic shaft 3 that passes through the stepped hole 8. The conical movable block 4 is coaxially connected to the telescopic shaft 3 inside the stepped hole 8. Several interlocking sliders 5 are arranged around the conical surface of the conical movable block 4. The O-ring 6 is tightly bound around the outer periphery of the slider 5. The slider 5 has a waist hole 9, and the limiting bolt 7, which is vertically connected to the sealing plug 2, passes through the waist hole 9. The slider 5 and the sealing plug 2 form a fuel tank wall reinforcement gap.

[0024] The sealing plug 2 is disc-shaped, with an outer sealing ring 10 embedded on its outer circumference. The outer sealing ring 10 is used to seal the detection interface 12 of the oil tank 11.

[0025] Furthermore, a plurality of inner sealing rings 13 are nested on the telescopic shaft 3, and the inner sealing rings are fitted into the inner wall of the handle 1.

[0026] Furthermore, the conical movable block 4 is in the shape of a frustum, with the small end of the frustum extending out of the stepped hole 8.

[0027] Furthermore, the slider 5 is fan-shaped and is assembled into a disc structure. When the slider 5 is in the assembled state, the area of ​​the disc structure is smaller than the surface area of ​​the front end of the sealing plug 2. A step 14 is formed between the disc structure and the sealing plug 2. The step 14 is used to cooperate with the detection interface 12 of the oil tank 11. When the slider 5 is in the dispersed state 15, the area of ​​the disc structure is equal to the surface area of ​​the front end of the sealing plug 2. A gap is formed between the disc structure and the sealing plug 2 to clamp the inner wall 16 and outer wall 17 of the oil tank 11. The edge of the disc structure is provided with a groove 18 for embedding the O-ring 6.

[0028] Furthermore, the slider 5 is provided with a conical surface 19 that engages with the conical movable block 4, and the taper of the conical surface 19 is consistent with that of the conical movable block 4.

[0029] Furthermore, the sealing plug 2 has a guide groove 20, and the slider 5 has a protruding guide portion. The guide portion fits in the guide groove 20. The guide groove 20 extends outward from the handle 1 as the axis to the edge of the sealing plug 2. The guide grooves 20 are evenly distributed.

[0030] Furthermore, the waist hole 9 is in a straight line shape, and the waist hole 9 and the guide groove 20 are aligned and distributed in the same direction.

[0031] Furthermore, the guide groove 20 is provided with a threaded hole for matching the limiting bolt 7.

[0032] Furthermore, a pressure plate 21 is threaded through the limiting bolt 7, the pressure plate 21 covers all the sliders 5, and the pressure plate 21 is used to adjust the spacing of the gap between the walls of the oil tank 11.

[0033] Before performing an airtightness test on the fuel tank, this device needs to be blocked at the output interface of the fuel tank, that is, this device is installed on the detection interface 12, and then compressed air is used to seal and inflate the fuel filling hole of the fuel tank. During the inflation process, the entire fuel tank needs to be immersed in water for about 30 seconds, and the water body is visually inspected to see if there are leaking bubbles. If there are no bubbles during the test, it is considered qualified and can be taken off the production line.

[0034] As Figure 4 shown, the fuel tank 11 is equipped with a detection interface 12, which also serves as the output interface of the motorcycle fuel tank. The detection interface 12 is a stepped hole, including an inner wall 16 and an outer wall 17. The size of the stepped hole is smaller than that of the sealing plug 2. When the slider 5 is in the reset state, manually pressing down the handle 1 can make the stepped portion 14 rest on the outer wall 17, and then pressing down the telescopic shaft 3 can make the conical movable block 4 push out the slider 5 to obtain the holding state as Figure 5 shown.

[0035] In the holding state, this device can completely block the detection interface 12. Due to this special structure of two-way holding, the difficulty of the installation operation of this product is significantly reduced. As long as it is inserted into the detection interface 12 and then the telescopic shaft 3 is pressed down to make the conical movable block 4 push out.

[0036] In summary, the present utility model provides a tool for detecting the airtightness of a motorcycle fuel tank 11. The interface is blocked by the sealing plug 2, and the slider 5 bound in the O-ring 6 is quickly pushed out by using the telescopic shaft. The cooperation between the slider 5 and the stepped portion 14 is used to firmly hold the fuel tank on the fuel tank wall, thereby greatly improving the loading efficiency of the airtightness test and effectively reducing the operation and test difficulty.

[0037] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A tool for testing the airtightness of a motorcycle fuel tank, characterized in that, The device includes a handle, a sealing plug, a telescopic shaft, a conical movable block, a slider, an O-ring, and a limiting bolt. The sealing plug is coaxially mounted on the front end of the handle, and a stepped hole is formed in the center of the sealing plug. The handle is hollow and contains a telescopic shaft that passes through the stepped hole. A conical movable block is coaxially connected to the telescopic shaft inside the stepped hole. Several interlocking sliders are arranged around the conical surface of the conical movable block. An O-ring is tightly bound around the slider. A waist hole is formed on the slider, and a limiting bolt that is vertically connected to the sealing plug passes through the waist hole. The slider and the sealing plug form a tank wall support gap.

2. The motorcycle fuel tank airtightness testing tool according to claim 1, characterized in that, The sealing plug is disc-shaped, with an outer sealing ring embedded on its outer circumference. The outer sealing ring is used to seal the detection interface of the oil tank.

3. The motorcycle fuel tank airtightness testing tool according to claim 1, characterized in that, Several inner sealing rings are nested on the telescopic shaft, and the inner sealing rings fit into the inner wall of the handle.

4. The motorcycle fuel tank airtightness testing tool according to claim 1, characterized in that, The conical movable block is shaped like a frustum of a cone, with the small end of the frustum extending out of the stepped hole.

5. The motorcycle fuel tank airtightness testing tool according to claim 1, characterized in that, The sliders are fan-shaped and assembled into a disc structure. When the sliders are in the assembled state, the area of ​​the disc structure is smaller than the surface area of ​​the front end of the sealing plug, and a step is formed between the disc structure and the sealing plug. The step is used to cooperate with the detection interface of the oil tank. When the sliders are in the dispersed state, the area of ​​the disc structure is equal to the surface area of ​​the front end of the sealing plug, and a tank wall clamping gap is formed between the disc structure and the sealing plug. The tank wall clamping gap is used to clamp the inner and outer walls of the oil tank. The edge of the disc structure has a groove for embedding the O-ring.

6. The motorcycle fuel tank airtightness testing tool according to claim 5, characterized in that, The slider is provided with a conical surface that engages with the conical movable block, and the taper of the conical surface is consistent with that of the conical movable block.

7. The motorcycle fuel tank airtightness testing tool according to claim 1, characterized in that, The sealing plug has a guide groove, and the slider has a raised guide part. The guide part fits in the guide groove. The guide groove radiates outward from the handle as the axis to the edge of the sealing plug. The guide grooves are evenly distributed.

8. The motorcycle fuel tank airtightness testing tool according to claim 7, characterized in that, The waist hole is in a straight line shape, and the waist hole and the guide groove are aligned and distributed in the same direction.

9. The motorcycle fuel tank airtightness testing tool according to claim 7, characterized in that, The guide groove is provided with threaded holes for matching limit bolts.

10. The motorcycle fuel tank airtightness testing tool according to claim 1, characterized in that, A pressure plate is threaded through the limiting bolt, the pressure plate covers all the sliders, and the pressure plate is used to adjust the spacing of the tank wall clamping gap.

Images