Nut seat assembly neglected loading prevention testing fixture

Abstract

A nut seat assembly neglected loading prevention testing fixture belongs to the technical field of automobile part detection and comprises a detection portion, an observation portion and an operation rod which are coaxially arranged, the outer diameter of the detection portion is smaller than that of the observation portion, the outer diameter of the detection portion is larger than the initial inner diameter of a locking clamp spring, and the outer diameter of the detection portion is not larger than the diameter of a gasket mounting hole. The detection part can penetrate through the locking clamp spring under the action of force and go deep into a gasket mounting hole, the clamping stagnation phenomenon occurs in the process of penetrating through the locking clamp spring, whether the locking clamp spring is neglected to be mounted or not is judged according to the clamping stagnation phenomenon, and the sum of the lengths of the detection part and the observation part is larger than the sum of the depth of an inner hole of a nut seat and the thickness of the locking clamp spring. The sum of the lengths of the detection part and the observation part is smaller than the sum of the depth of the nut seat inner hole, the thickness of the locking clamp spring and the depth of the gasket mounting hole, the position of the observation part can be controlled through cooperation of the detection part and the rubber gasket, and then whether the rubber gasket is neglected or not can be rapidly judged by observing whether the end of the observation part is exposed out of the nut seat or not.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts detection, in particular to a leak - proof installation detector for a nut seat assembly. Background Technique

[0002] The nut seat assembly includes a nut seat, a locking circlip and a rubber washer. The nut seat is used to screw into the threaded interface of the product component. The locking circlip is installed in the threaded interface to automatically center and lock the joint. The rubber washer is placed in the mounting hole coaxial with the threaded interface to enhance the sealing effect.

[0003] During the installation process of the rubber washer and the locking circlip, the problem of missing installation may occur. Since the method of directly observing with the naked eye to determine whether there is a missing installation is time - consuming and laborious, and there are also defects of missed inspection. To avoid the problems existing in direct visual inspection, a quick - insertion detector (publication number CN216309056U) has emerged. It is provided with a connecting block and a detection block that can slide relative to each other, so that the diameter of the insertion end of the detection block or the diameter of the circumscribed circle is slightly larger than the inner diameter of the locking circlip. The inspector can quickly judge according to the corresponding structural position change and / or mark of the detection block, and then classify and / or check and confirm.

[0004] For the existing quick - insertion detector, the reference parts for detecting missing installation of different components are different. The overall structure of the detector is complex, the manufacturing difficulty is large, and due to the different reference parts, the use and judgment of the detector are difficult. The detection operation process depends highly on the operation experience of the detector. When a novice operator uses it, it is easy to misjudge or the judgment speed is slow, affecting the detection efficiency and accuracy. Content of the Utility Model

[0005] To solve the technical problems of the existing quick - insertion detector for nut seat assembly, such as complex overall structure and difficult use, provided in the above - mentioned background technique, the utility model provides a leak - proof installation detector for a nut seat assembly.

[0006] The technical solution of the utility model is as follows:

[0007] The utility model provides a leak - proof installation inspection tool for a nut seat assembly, which includes an operating rod. One end of the operating rod is fixedly connected with an observation part and a detection part in sequence. The detection part, the observation part and the operating rod are coaxially arranged. The outer diameter of the detection part is smaller than that of the observation part, and the outer diameter of the detection part is larger than the initial inner diameter of the locking circlip, and the outer diameter of the detection part is not larger than the diameter of the washer installation hole. The detection part can pass through the locking circlip under force and penetrate into the washer installation hole. During the process of the detection part passing through the locking circlip, there will be a jamming phenomenon, and whether the locking circlip is missed in installation can be judged through the jamming phenomenon. The sum of the lengths of the detection part and the observation part is larger than the sum of the depth of the inner hole of the nut seat and the thickness of the locking circlip, and the sum of the lengths of the detection part and the observation part is smaller than the sum of the depth of the inner hole of the nut seat, the thickness of the locking circlip and the depth of the washer installation hole. The position of the observation part can be controlled by the cooperation between the detection part and the rubber washer, and then the position of the end of the observation part can be controlled. Whether the rubber washer is missed in installation can be quickly judged by observing whether the end of the observation part is exposed outside the nut seat.

[0008] Preferably, the outer diameter of the observation part is not larger than the inner diameter of the nut seat, so as to facilitate the axial movement of the observation part in the nut seat.

[0009] Preferably, the length of the detection part is equal to the sum of the depth of the washer installation hole and the thickness of the locking circlip, which is convenient for the design and manufacture of the length of the detection part.

[0010] Preferably, the length of the observation part is smaller than the depth of the inner hole of the nut seat, ensuring that the observation part can be immersed in the nut seat.

[0011] Preferably, the outer diameter of the observation part is larger than that of the operating rod, which is convenient for distinguishing the connection position between the observation part and the operating rod.

[0012] Preferably, a handle is fixedly arranged at one end of the operating rod far away from the observation part, which is convenient for applying a downward pressure to the operating rod and facilitating the use of the inspection tool.

[0013] Preferably, scale lines are arranged along the axial direction on the outer wall of the observation part, which is convenient for observing the insertion length of the observation part, and then convenient for judging whether the observation part is partially inserted or fully inserted.

[0014] Preferably, a guiding part is fixedly arranged at one end of the detection part far away from the observation part. The guiding part is coaxially arranged with the detection part, and the outer diameter of the guiding part is smaller than that of the detection part, which is convenient for guiding through the locking circlip.

[0015] Preferably, a circular chamfer or a hemispherical structure is arranged at one end of the guiding part far away from the detection part to facilitate the guiding and inserting work of the guiding part.

[0016] Preferably, a circular chamfer is arranged on the circumferential side at one end of the detection part far away from the operating rod, which facilitates the detection part to pass through the locking circlip.

[0017] It can be seen from the above technical solutions that the advantages of the utility model are as follows:

[0018] The outer diameter of the detection part is larger than the initial inner diameter of the locking circlip, and the outer diameter of the detection part is not larger than the diameter of the washer mounting hole. The detection part can pass through the locking circlip under force and penetrate into the washer mounting hole. During the process of the detection part passing through the locking circlip, a jamming phenomenon will occur, and it is possible to judge whether the locking circlip is missed by the jamming phenomenon. The total length of the detection part and the observation part is greater than the sum of the inner hole depth of the nut seat and the thickness of the locking circlip, and the total length of the detection part and the observation part is less than the sum of the inner hole depth of the nut seat, the thickness of the locking circlip and the depth of the washer mounting hole. It is possible to control the position of the observation part through the cooperation between the detection part and the rubber washer, and further control the position of the end of the observation part. It is possible to quickly judge whether the rubber washer is missed by observing whether the end of the observation part is exposed outside the nut seat. The overall structure of the anti-missing mounting inspection tool is simple, easy to process, and the reference target is fixed, making the judgment method simple, without the need for too much inspection tool operation experience, and it is more convenient to promote and use, improving the detection efficiency and accuracy of missing mounting detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the overall structure of the inspection tool according to one or more embodiments of the present invention;

[0021] Figure 2 Schematic diagram of the cooperative use of the inspection tool according to one or more embodiments of the present invention and the nut seat assembly;

[0022] Figure 3 Schematic diagram of the first use state of the inspection tool when the locking circlip and the rubber washer are not missed according to one or more embodiments of the present invention;

[0023] Figure 4 Schematic diagram of the second use state of the inspection tool when the locking circlip and the rubber washer are not missed according to one or more embodiments of the present invention;

[0024] Figure 5 Schematic diagram of the use state of the inspection tool when the rubber washer is missed according to one or more embodiments of the present invention;

[0025] Figure 6 Schematic diagram of the structure of the locking circlip according to one or more embodiments of the present invention;

[0026] The components represented by the reference numerals in the drawings are:

[0027] 1. Detection part; 2. Observation part; 3. Operating rod; 4. Guiding part; 5. Handle; 6. Base body; 7. Nut seat; 8. Locking circlip; 9. Rubber washer; 10. Washer mounting hole. Specific implementation manner

[0028] In order to make the purpose, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0029] In a typical implementation manner of the present utility model, as Figures 1-6 shown, a leak - proof installation inspection tool for a nut seat assembly is proposed, including: a detection part 1, an observation part 2, and an operating rod 3 arranged in sequence. The detection part 1, the observation part 2, and the operating rod 3 are coaxially arranged. One end of the detection part 1 is fixedly connected to one end of the observation part 2, and one end of the observation part 2 far from the detection part 1 is fixedly connected to one end of the operating rod 3.

[0030] Among them, the detection part 1, the observation part 2, and the operating rod 3 are all columnar structures. The outer diameter of the detection part 1 is greater than the initial inner diameter of the locking circlip 8 (i.e., the inner diameter of the locking circlip 8 in the non - clamped state), and the outer diameter of the detection part 1 is not greater than the diameter of the washer mounting hole 10. The detection part 1 can apply a force to expand the locking circlip 8 so as to continue to penetrate deeper in the direction close to the rubber washer 9. The outer diameter of the detection part 1 is smaller than that of the observation part 2, and the outer diameter of the observation part 2 is not greater than the inner diameter of the nut seat 7.

[0031] The sum of the lengths of the detection part 1 and the observation part 2 is greater than the sum of the inner - hole depth of the nut seat 7 and the thickness of the locking circlip 8, and the sum of the lengths of the detection part 1 and the observation part 2 is smaller than the sum of the inner - hole depth of the nut seat 7, the thickness of the locking circlip 8, and the depth of the washer mounting hole 10. Specifically, the sum of the depth of the washer mounting hole 10 on the base body 6 and the thickness of the locking circlip 8 is the same as the length of the detection part 1, and the length of the observation part 2 is smaller than the inner - hole depth of the nut seat 7.

[0032] The outer diameter of the observation part 2 is greater than the outer diameter of the operating rod 3 to facilitate distinguishing the connection position between the observation part 2 and the operating rod 3. A handle 5 is fixedly provided at one end of the operating rod 3 far from the observation part 2. The handle 5 is a spherical structure to facilitate applying a downward pressure to the operating rod 3 and facilitate the use of the inspection tool.

[0033] For the convenience of observing the observation part 2, scale lines can also be provided along the axial direction on the outer wall of the observation part 2 to facilitate observing the insertion length of the observation part 2, and further facilitate judging whether the observation part 2 is partially inserted or fully inserted.

[0034] It should be noted that the scale lines mentioned in this embodiment are mainly used to judge the insertion length of the observation part 2, rather than measuring the depth of the nut seat assembly.

[0035] At one end of the detection part 1 far away from the observation part 2, a guiding part 4 is fixedly provided. The guiding part 4 is of a columnar structure. The guiding part 4 is coaxially arranged with the detection part 1, and the outer diameter of the guiding part 4 is smaller than that of the detection part 1 to play a guiding role.

[0036] The outer diameter of the guiding part 4 is smaller than the initial inner diameter of the locking circlip 8, and the outer diameter of the guiding part 4 is smaller than the inner diameter of the medium flow channel on the base body 6 that is coaxially communicated with the washer mounting hole 10, so as to facilitate the insertion of the guiding part 4 into the flow channel and further position the inspection tool.

[0037] In order to facilitate the detection part 1 and the guiding part 4 to pass through the locking circlip 8, a circular chamfer is provided on the circumferential side of one end of the detection part 1 far away from the operating rod 3, and a circular chamfer is also provided on the circumferential side of one end of the guiding part 4 far away from the detection part 1.

[0038] In other embodiments, the end of the guiding part 4 far away from the detection part 1 can also be set into a hemispherical structure to facilitate the guiding and inserting work of the guiding part 4.

[0039] The specific working principle is as follows:

[0040] Insert the inspection tool into the nut seat 7 to be detected;

[0041] When both the locking circlip 8 and the rubber washer 9 are not omitted, after the inspection tool is inserted into the nut seat 7, since the outer diameter of the detection part 1 is larger than the initial inner diameter of the locking circlip 8, without applying continuous force, the locking circlip 8 will block the detection part 1 from continuing to insert, as Figure 3 shown. At this time, most of the area of the observation part 2 close to the operating rod 3 (at least half of the observation part 2) is exposed outside the nut seat 7. When continuous force is applied to the inspection tool, since the aperture of the locking circlip 8 has the property of expanding when stressed, the inspection tool will continue to penetrate after a jamming phenomenon occurs until it cannot be pressed in further, as Figure 4 shown. The detection part 1 is blocked and limited by the rubber washer 1, so that a small part of the area of the observation part 2 close to the operating rod 3 (for example, 1 / 10 of the observation part 2) is exposed outside the nut seat 7;

[0042] When only the rubber washer 9 is not installed, without further applying force, the locking circlip 8 will block the detection part 1 from continuing to insert. At this time, most of the area (at least half) of the observation part 2 close to the operating rod 3 is exposed outside the nut seat 7. When continuing to apply force to the inspection tool, the inspection tool will continue to penetrate after jamming, until it cannot be pressed in any further. As Figure 5 shown, the observation part 2 will be completely immersed in the nut seat 7;

[0043] When only the locking circlip 8 is not installed, there will be no jamming or the situation of continuing to penetrate after applying force during the detection process of the inspection tool penetrating into the nut seat assembly. Instead, it will directly penetrate into the nut seat assembly without obstruction, and a small part of the area of the observation part 2 close to the operating rod 3 (for example, 1 / 10 of the observation part 2) is exposed outside the nut seat 7;

[0044] When both the locking circlip 8 and the rubber washer 9 are not installed, the inspection tool will directly penetrate into the nut seat assembly without obstruction, and the observation part 2 will be completely immersed in the nut seat 7.

[0045] The anti-missing installation inspection tool in this embodiment has a simple overall structure, is convenient for processing, and the reference target is fixed. Whether the locking circlip 8 is missing is judged by whether there is a jamming phenomenon during the insertion process of the inspection tool. Whether the rubber washer 9 is missing can be realized only by observing whether one end of the observation part 2 close to the operating rod 3 is exposed outside the nut seat 7. The operation is simple, and the judgment method is simple, without the need for too much inspection tool operation experience, which is more convenient for popularization and use, and improves the detection efficiency and accuracy of missing installation detection.

[0046] 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 obvious to those skilled in the art, and the general principles defined herein can 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 these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A leak-proof inspection tool for a nut seat assembly, comprising: Operating rod (3), characterized in that one end of the operating rod (3) is fixedly connected in sequence with an observation part (2) and a detection part (1), the detection part (1), the observation part (2) and the operating rod (3) are coaxially arranged, the outer diameter of the detection part (1) is smaller than that of the observation part (2), the outer diameter of the detection part (1) is larger than the initial inner diameter of the locking circlip (8), and the outer diameter of the detection part (1) is not larger than the diameter of the washer mounting hole (10), and the total length of the detection part (1) and the observation part (2) is larger than the sum of the inner hole depth of the nut seat (7) and the thickness of the locking circlip (8), and the total length of the detection part (1) and the observation part (2) is smaller than the sum of the inner hole depth of the nut seat (7), the thickness of the locking circlip (8) and the depth of the washer mounting hole (10).

2. The leak-proof installation inspection tool for the nut seat assembly according to claim 1, characterized in that The outer diameter of the observation part (2) is not larger than the inner diameter of the nut seat (7).

3. The leak-proof inspection fixture for the nut seat assembly according to claim 1, characterized in that, The length of the detection part (1) is equal to the sum of the depth of the washer mounting hole (10) and the thickness of the locking circlip (8).

4. The leak-proof installation inspection tool for the nut seat assembly according to claim 3, wherein, The length of the observation part (2) is smaller than the inner hole depth of the nut seat (7).

5. The leak-proof installation inspection tool for the nut seat assembly according to claim 1, characterized in that, The outer diameter of the observation part (2) is larger than that of the operating rod (3).

6. The leak - proof installation inspection tool for the nut seat assembly according to claim 1, wherein, A handle (5) is fixedly provided at one end of the operating rod (3) away from the observation part (2).

7. The leak - proof installation inspection tool for the nut seat assembly according to claim 1, characterized in that, Scale lines are arranged axially along the outer wall of the observation part (2).

8. The leak - proof installation inspection tool for the nut seat assembly according to claim 1, wherein, A guiding part (4) is fixedly provided at one end of the detection part (1) away from the observation part (2), the guiding part (4) is coaxially arranged with the detection part (1), and the outer diameter of the guiding part (4) is smaller than that of the detection part (1).

9. The leak - proof assembly inspection tool for the nut seat assembly according to claim 8, characterized in that, A circular chamfer or a hemispherical structure is provided at one end of the guiding part (4) away from the detection part (1).

10. The leak - proof installation inspection tool for the nut seat assembly according to claim 1, wherein, A circular chamfer is provided on the circumferential side at one end of the detection part (1) away from the operating rod (3).

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