CN215811469U

CN215811469U - Headlight leakproofness detects instrument

Info

Publication number: CN215811469U
Application number: CN202121890159.7U
Authority: CN
Inventors: 郭东石
Original assignee: FAW Volkswagen Automotive Co Ltd
Current assignee: FAW Volkswagen Automotive Co Ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-11
Anticipated expiration: 2031-08-11

Abstract

The utility model provides a headlamp sealing detection tool which comprises a gas transmission device and a container for containing liquid, wherein the gas transmission device comprises a gas inlet pipe, a first gas outlet pipe and a second gas outlet pipe; the air inlet pipe is provided with an air inlet; the first air outlet pipe is provided with a first end and a second end, and the first end is connected with the air inlet pipe; the second air outlet pipe is provided with a third end and a fourth end, the third end is connected with the air inlet pipe, and the fourth end is located in the liquid. The tool has the advantages that the tool is simple in structure and convenient to operate, whether the sealing performance of the headlamp is qualified or not can be judged visually according to the change condition of the liquid column in the tool, a pressure measuring device is not needed, and the cost is saved.

Description

Headlight leakproofness detects instrument

Technical Field

The utility model relates to the technical field of headlamp detection, in particular to a headlamp sealing performance detection tool.

Background

The automobile lamp is an important component of an automobile, if the sealing performance of the automobile lamp is poor, water is easy to enter, fog is easy to occur, the normal use of the automobile lamp and the service life of the automobile lamp are influenced, and even the driving safety is influenced. The user discovers that the car light hazes, often can require 4S shop directly to change the car light, but sometimes the car light hazes because user' S operation, if directly wash the engine compartment with the high-pressure squirt, or the service environment of car, causes such as rainy day as following, and not because the car light leakproofness is not good to be caused, has just so caused a large amount of mistake claims. Therefore, in order to enable the vehicle lamp to be used normally and avoid claims by mistake, it is necessary to detect the sealing property of the vehicle lamp.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a headlamp sealing performance detection tool which is simple in structure and convenient to operate and can visually reflect whether the sealing performance of a headlamp is qualified or not.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a headlamp sealing performance detection tool comprises a gas transmission device and a container for containing liquid, wherein the gas transmission device comprises a gas inlet pipe, a first gas outlet pipe and a second gas outlet pipe; the air inlet pipe is provided with an air inlet; the first air outlet pipe is provided with a first end and a second end, and the first end is connected with the air inlet pipe; the second air outlet pipe is provided with a third end and a fourth end, the third end is connected with the air inlet pipe, and the fourth end is located in the liquid.

Furthermore, the gas transmission device also comprises a gas cavity, the gas inlet pipe is connected with the gas cavity, and the first end and/or the third end are connected with the gas inlet pipe through the gas cavity.

Further, the air cavity is covered on the container or is placed in the container close to the opening of the container.

Further, the air cavity comprises an upper cover plate, a lower partition plate and a sealing ring; the lower partition plate is arranged in the container and is close to the opening of the container; the sealing ring is arranged between the side wall of the container and the lower clapboard; the upper cover plate, the lower partition plate and the side wall of the container enclose a synthetic gas cavity.

Furthermore, the air inlet pipe is provided with an adjusting valve.

Furthermore, the container is provided with a transparent side wall, and the second air outlet pipe is a transparent thin pipe.

Furthermore, the second outlet duct is tightly attached to the side wall of the container, and the side wall of the container is provided with an observation window capable of displaying the liquid level of the second outlet duct.

Furthermore, a scale mark value is arranged on the second air outlet pipe, and the mark value represents the distance from the mark position to the fourth end.

Further, the air inlet is an American air nozzle.

Further, the fourth end is located at a depth of 30cm below the liquid surface.

The headlamp sealing performance detection tool has the advantages that: according to the change condition of the liquid column in the tool, whether the sealing performance of the headlamp is qualified or not can be judged visually, the operation is convenient, and time and labor are saved; and a pressure measuring device is not needed, so that the cost is saved.

Drawings

Fig. 1a is a schematic structural view of a headlamp sealing performance detection tool according to a first embodiment of the present invention before ventilation.

Fig. 1b is a schematic structural view of the headlamp sealing performance inspection tool according to the first embodiment of the present invention during ventilation.

Fig. 1c is a schematic view of a headlamp sealing performance qualified structure of the headlamp sealing performance detection tool according to the first embodiment of the present invention.

Fig. 1d is a schematic diagram of a headlamp sealing performance failure structure of the headlamp sealing performance detection tool according to the first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a headlamp sealing performance detection tool according to a second embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a headlamp sealing performance detection tool according to a third embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a headlight tightness detection tool according to a fourth embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a headlamp sealing performance detection tool according to a fifth embodiment of the present invention.

In the figure: (1) an air inlet pipe; (101) an air inlet; (102) adjusting a valve; (201) a first air outlet pipe; (202) a second air outlet pipe; (3) a container; (4) a headlight; (5) an air cavity; (501) an upper cover plate; (502) a lower baffle plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "between", "side wall", "depth", and the like, indicate orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used merely for convenience of description and simplification of the description, and do not indicate or imply that the referenced devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. A connection includes a direct connection between two elements and also includes an indirect connection through other elements. In addition, it is to be understood that, unless otherwise explicitly stated or limited, the term "coupled" is to be interpreted broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; the connection may be direct or indirect through an intermediate medium, and may be a communication between two components or an interaction relationship between two components. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

First embodiment

The utility model provides a headlamp sealing detection tool, which comprises a gas transmission device and a container 3 for containing liquid, wherein the liquid can be directly used by water, and the gas transmission device comprises a gas inlet pipe 1, a first gas outlet pipe 201 and a second gas outlet pipe 202, as shown in figures 1a to 1 d. The intake pipe 1 has an air inlet 101, and the air inlet 101 is preferably an american-style nozzle, and can be directly inflated by using a tire inflation device. The first air outlet pipe 201 is provided with a first end and a second end, the first end is directly connected with the air inlet pipe 1, and the second end is connected with a vent hole of the headlamp 4 to input air into the headlamp 4. The second air outlet pipe 202 is provided with a third end and a fourth end, the third end is directly connected with the air inlet pipe 1, the fourth end is located under the liquid level and can ventilate water, and preferably, the fourth end is approximately located at the depth of 30cm under the liquid level, so that the pressure in the headlamp 4 is about 30 mbar.

And a scale mark value is arranged on the second air outlet pipe 202, the mark value represents the distance from the mark position to the fourth end, and the depth of the second air outlet pipe 202 inserted into water can be directly displayed. The air inlet pipe 1 may further be provided with an adjusting valve 102 to adjust the magnitude of the inlet air flow, so as to keep the liquid level in the container 3 stable. Second outlet duct 202 is transparent tubule, can observe intraductal liquid level change, and is corresponding, container 3 has transparent lateral wall, and is preferred, can use transparent ya keli pipe as container 3 and second outlet duct 202, second outlet duct 202 is placed in the position that is close to transparent lateral wall, can observe second outlet duct 202 through transparent lateral wall.

Second embodiment

Different from the first embodiment, as shown in fig. 2, the gas transmission device is further provided with a gas cavity 5, so that the gas inlet pipe 1 is connected with the gas cavity 5, and the first end of the first gas outlet pipe 201 and/or the third end of the second gas outlet pipe 202 is connected with the gas inlet pipe 1 through the gas cavity 5. The air chamber 5 is directly covered on the container 3 so that the air chamber 5 is located above the container 3. The air inlet pipe 1 and the first air outlet pipe 201 are preferably flexible pipes and are arranged at the same side of the air cavity 5, and the second air outlet pipe 202 is inserted into water.

Third embodiment

Unlike the second embodiment, the air chamber 5 extends into the container 3 and is positioned within the container 3 near the mouth of the container, as shown in fig. 3.

Fourth embodiment

Unlike the second embodiment, as shown in fig. 4, the air chamber 5 includes an upper cover plate 501, a lower partition plate 502, and a sealing ring; the lower baffle 502 is arranged in the container 3 and close to the container opening; the sealing ring is arranged between the side wall of the container 3 and the lower partition plate 502; the upper cover plate 501, the lower partition plate 502 and the side wall of the container 3 enclose a synthetic gas chamber 5. The air inlet pipe 1 and the first air outlet pipe 201 are arranged on the upper cover plate 501, and the second air outlet pipe 202 is arranged on the lower baffle plate 502 and inserted into water.

Fifth embodiment

Different from the fourth embodiment, as shown in fig. 5, the second air outlet pipe 202 is tightly attached to the side wall of the container 3, the side wall of the container 3 is provided with an observation window capable of displaying the liquid level of the second air outlet pipe 202, and the container 3 can be made of opaque materials such as metal, so that the air transmission device and the container 3 are fixed together, the tool is strong and durable, and the tool is prevented from being knocked down and damaged.

When the tool is used for detecting the tightness of the headlamp 4, the operation steps are as follows:

a. the headlight 4 is detached, the second end of the tool is connected with any vent hole or plug of the headlight 4, the tool and the lamp body shell are kept sealed, and other air holes and socket holes of the headlight 4 are sealed; the container 3 is filled with water and the second gas outlet 202 is inserted into the water, preferably, the second gas outlet 202 is inserted into the water to a depth of 30 cm. At this time, as shown in fig. 1a, the initial air pressure p1 in the headlight 4 and the second air outlet pipe 202 is the ambient atmospheric pressure p0, the air pressure p above the liquid level in the container 3 is also the ambient atmospheric pressure p0, the second air outlet pipe 202 is filled with water, and the liquid level in the second air outlet pipe 202 is the same as the liquid level of the water in the container 3.

b. The air inlet 101 is connected with an air pump for air supply, the air inlet 101 is an American-type air nozzle, and can be directly inflated by using a tire inflation device to convey air to the headlamp 4 and convey air to the second air outlet pipe 202; the air supply pressure is greater than the ambient atmospheric pressure p0, and the air supply gauge pressure is 0.1 bar-2.5 bar. During air supply, the opening degree of the regulating valve 102 can be regulated to regulate the size of the air inlet flow, so that water cannot tumble, and the liquid level in the container 3 is kept stable. As shown in fig. 1b, during air supply, the air pressure p1 in the second air outlet pipe 202 and the headlight 4 is greater than the ambient air pressure p0, water bubbles, water in the second air outlet pipe 202 is squeezed into the container 3 until all water in the second air outlet pipe 202 is discharged, the second air outlet pipe 202 is a thin pipe, water in the second air outlet pipe 202 is discharged into the container 3, the liquid level of the container 3 is basically unchanged, and at this time, the water pressure at the fourth end is stable, that is, the sum of the air pressure p on the liquid level of the container 3 and the water column pressure of 30cm is equal to the air pressure p1 in the second air outlet pipe 202. After about 5s, the air supply can be stopped or the regulating valve 102 can be closed, and the water in the second air outlet pipe 202 is completely discharged, so that the operation time is short and the time is saved.

c. And (5) observing the liquid level change in the second air outlet pipe 202 and judging whether the tightness of the headlamp 4 is qualified.

When the sealing performance of the headlight 4 is qualified, as shown in fig. 1c, the second air outlet pipe 202 and the headlight 4 are closed spaces, the air pressure in the spaces is kept stable, the sum of the air pressure p on the liquid level of the container 3 and the pressure of a 30cm water column is kept unchanged, no water is in the second air outlet pipe 202, and the liquid level is kept unchanged.

If the headlight 4 has a leak due to a defective sealing, as shown in fig. 1d, the headlight 4 is connected to the environment and the gas in the headlight 4 leaks into the environment until the pressure p1 in the headlight 4 is equal to the ambient pressure p 0. Along with the leakage of the gas in the headlamp 4, the gas pressure in the second gas outlet pipe 202 also decreases, the sum of the gas pressure p on the liquid surface of the container 3 and the pressure of a 30cm water column is greater than the gas pressure p1 in the second gas outlet pipe 202, water enters the second gas outlet pipe 202 from the container 3, and the liquid level of the water in the second gas outlet pipe 202 rises. When the container 3 is unsealed, the pressure p above the liquid level in the container 3 is equal to the ambient atmospheric pressure p0, and the liquid level in the second outlet pipe 202 rises to be the same as the liquid level in the container 3. When the air cavity 5 is covered above the container 3 to seal the container 3, and during air transmission, after all the water in the second air outlet pipe 202 is discharged, a part of air enters the upper part of the container 3, so that the air pressure p above the liquid level of the container 3 is greater than the ambient atmospheric pressure p0, and the liquid level in the second air outlet pipe 202 rises to be slightly higher than the liquid level of the container 3.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The headlamp sealing performance detection tool is characterized by comprising a gas transmission device and a container for containing liquid, wherein the gas transmission device comprises a gas inlet pipe, a first gas outlet pipe and a second gas outlet pipe; the air inlet pipe is provided with an air inlet; the first air outlet pipe is provided with a first end and a second end, and the first end is connected with the air inlet pipe; the second air outlet pipe is provided with a third end and a fourth end, the third end is connected with the air inlet pipe, and the fourth end is located in the liquid.

2. The headlamp sealing detection tool of claim 1, wherein the gas delivery device further comprises a gas cavity, the gas inlet pipe is connected with the gas cavity, and the first end and/or the third end are connected with the gas inlet pipe through the gas cavity.

3. The headlamp seal detection tool of claim 2 wherein the air chamber cap is on or placed within the container proximate the container mouth.

4. The headlamp seal detection tool according to claim 2, wherein the air chamber includes an upper cover plate, a lower partition plate, and a seal ring; the lower partition plate is arranged in the container and is close to the opening of the container; the sealing ring is arranged between the side wall of the container and the lower clapboard; the upper cover plate, the lower partition plate and the side wall of the container enclose a synthetic gas cavity.

5. The headlamp seal detection tool according to claim 1, wherein a regulator valve is provided on the intake pipe.

6. The headlamp seal detection tool according to any one of claims 1 to 5, wherein the container has a transparent sidewall, and the second air outlet tube is a transparent thin tube.

7. The headlamp seal detection tool according to any one of claims 1 to 5, wherein the second outlet tube is tightly attached to a side wall of the container, and the side wall of the container is provided with an observation window capable of displaying a liquid level of the second outlet tube.

8. The headlamp seal detection tool of claim 1 wherein the second outlet tube has a graduated marking value disposed thereon, the marking value indicating the distance from the marking to the fourth end.

9. The headlamp seal detection tool of claim 1, wherein the air inlet is a schrader nozzle.

10. The headlamp seal detection tool according to claim 1 or 8, wherein the fourth end is located 30cm deep below the liquid surface.