Protective cap for connector

Abstract

The utility model discloses a protective cap for a connector, belongs to the technical field of connectors, and solves the problem that a terminal of a conventional connector is easy to damage by water due to lack of protection. The protective cover comprises a protective cover body of a hollow structure, the size of the inner wall of the protective cover body is larger than the size of the outer wall of a terminal of the connector, the size of the inner wall of the protective cover body is matched with the size of a sealing ring at the bottom of the outer wall of the terminal, and the size of the outer wall of the protective cover body is matched with the size of the inner wall of a shell of the connector. Two sides of the protective cover are respectively provided with a locking structure which can be matched with a pull rod of the connector to lock the protective cover on the connector, each locking structure comprises two guide strips, the two guide strips are symmetrically arranged on the side surface of the protective cover to form a guide groove, and the bottoms of the opposite sides of the two guide strips are respectively provided with a limiting block. The protective cap for the connector can effectively protect the terminal of the connector, realizes quick assembly and disassembly, and does not affect subsequent engine test run and whole vehicle assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more specifically, to a connector protective cap. Background Art

[0002] From the production of the wiring harness to the process of loading the vehicle, the engine is cleaned and placed in the outdoor warehouse of the car factory for storage. For some connectors, due to the lack of protection, dust, water and other foreign objects are found to enter the connectors when loading the vehicle at the car factory, causing deformation and corrosion of the internal terminals, which seriously affects the quality of the engine products. In order to avoid such problems, the traditional practice is to wrap a layer of film or tape around the outside of the connector to cover the internal terminals, so as to prevent dust, water and other impurities from entering. However, the film or tape is usually thin and easily damaged by bumps, and the protective effect is still poor. In addition, the film or tape has poor temperature resistance and is easily damaged during engine testing.

[0003] Therefore, there is an urgent need to design a connector protection cap to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to address the above-mentioned deficiencies in the prior art, and its purpose is to provide a connector protective cap that can effectively protect the connector terminals and achieve quick disassembly and assembly without affecting subsequent engine testing and vehicle assembly.

[0005] The technical solution of the utility model is as follows: a connector protective cap, comprising a protective cover with a hollow structure, the inner wall size of the protective cover is larger than the outer wall size of the connector terminal, and the inner wall size of the protective cover is adapted to the size of the sealing ring at the bottom of the outer wall of the terminal, the outer wall size of the protective cover is adapted to the inner wall size of the connector shell, both sides of the protective cover are provided with locking structures that can cooperate with the pull rod of the connector to lock the protective cover on the connector, the locking structure includes two guide bars, the two guide bars are symmetrically installed on the side of the protective cover to form a guide groove, and the bottom of the opposite side of the two guide bars are provided with a limit block, the top of the protective cover is provided with a flange turned up toward its outer wall, and the guide groove runs through the flange.

[0006] As a further improvement, a first inclined surface is provided on one side opposite to the two limit blocks, and the first inclined surface is inclined downward along the symmetry center line of the two guide strips.

[0007] Furthermore, a second inclined surface is provided at the bottom of one side of the two limit blocks away from the protective cover, and the second inclined surface is inclined downward and toward the side close to the protective cover.

[0008] Furthermore, the sealing ring and the inner wall of the protective cover are in interference fit, and the outer wall of the protective cover and the inner wall of the shell are in clearance fit.

[0009] Furthermore, both the inner wall and the outer wall of the bottom of the protective cover are provided with chamfers.

[0010] Furthermore, the protective cover, guide strip, limit block and flange are all made of nylon or rubber.

[0011] Furthermore, the protective cover, guide strip, limit block and flange are an integrally formed structure.

[0012] Furthermore, a model label is provided on the top of the protective cover.

[0013] Beneficial Effects

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. The connector protective cap of the utility model can be inserted into the gap between the connector shell and the terminal during the connector assembly process, and the outer wall of the protective cap is in contact with the inner wall of the connector shell to form a first layer of sealing, which can block some large particles of impurities. At this time, the inner wall of the protective cap is in contact with the sealing ring at the bottom of the terminal at the same time to form a second layer of sealing. The two-layer sealing structure can greatly improve the sealing of the connector terminal, and the protective cap is a detachable installation method. When assembling the whole vehicle, it is convenient to pull out the protective cap, which is very convenient to use. The protective cap can effectively protect the connector terminal and realize rapid disassembly and assembly without affecting the subsequent engine test and vehicle assembly.

[0016] 2. The connector protective cap of the utility model cooperates with the pull rod of the connector by designing a locking structure. When installing the protective cap, first rotate the pull rod to rotate the pressure block on the pull rod to an upward position, then align the guide groove of the protective cap with the pressure block on the pull rod, and then press the protective cap into the gap between the connector housing and the terminal, and finally rotate the pull rod to make the pressure block on the pull rod squeeze the limit block. Since the pressure block interferes with the limit block, the protective cap cannot be loosened, which further improves the stability of the protective cap installation and prevents it from falling off during subsequent circulation, and it is also more convenient to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a connector in the prior art;

[0018] Figure 2 It is a structural schematic diagram of a pull rod in the prior art;

[0019] Figure 3 It is a structural schematic diagram of one side of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the other side of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure when the utility model is applied.

[0022] Among them: 1-protective cover, 2-terminal, 3-sealing ring, 4-housing, 5-pull rod, 6-guide bar, 7-guide groove, 8-limiting block, 9-flanging, 10-first inclined surface, 11-second inclined surface, 12-chamfer, 13-pressing block. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0024] The protective cap of the utility model is applied to Figure 1-2 The connector shown is a product in the prior art, which includes a shell 4 and a terminal 2 located in the shell 4. A sealing ring 3 is provided at the bottom of the terminal 2 to achieve sealing when the wiring harness is connected. A pull rod 5 is rotatably installed on the shell 4. The pull rod 5 is U-shaped. A rotating shaft connected to the shell 4 is provided on both inner sides of the opening of the pull rod 5. A pressure block 13 is provided on the rotating shaft in the shell 4 to facilitate the compression of the wiring harness.

[0025] like Figure 3-5 As shown, a connector protective cap of the utility model comprises a protective cover 1 with a hollow structure, the inner wall size of the protective cover 1 is larger than the outer wall size of the terminal 2 of the connector, so that the protective cover 1 can be sleeved around the terminal, and the inner wall size of the protective cover 1 is adapted to the size of the sealing ring 3 at the bottom of the outer wall of the terminal 2 to ensure that a seal is formed between the protective cover 1 and the sealing ring 3, and the outer wall size of the protective cover 1 is adapted to the inner wall size of the housing 4 of the connector to ensure that the protective cover 1 can be inserted into the housing 4.

[0026] The connector protective cap of the utility model can insert the protective cover 1 into the gap between the housing 4 and the terminal 2 of the connector during the process of connector assembly, and use the contact between the outer wall of the protective cover 1 and the inner wall of the housing 4 of the connector to form a first layer of sealing, which can block some large particles of impurities. At this time, the inner wall of the protective cover 1 and the sealing ring 3 at the bottom of the terminal 2 are in contact at the same time to form a second layer of sealing. The two-layer sealing structure can greatly improve the sealing of the connector terminal, and the protective cap is a detachable installation method. When assembling the whole vehicle, it is convenient to pull out the protective cap, which is very convenient to use. The protective cap can effectively protect the terminals of the connector and realize rapid disassembly and assembly without affecting the subsequent engine test and vehicle assembly.

[0027] A locking structure is provided on both sides of the protective cover 1, which can cooperate with the pull rod 5 of the connector to lock the protective cover 1 on the connector. The locking structure includes two guide strips 6, and the two guide strips 6 are symmetrically installed on the side of the protective cover 1 to form a guide groove 7, providing a clearance space for the pressure block 13 corresponding to the pull rod 5, and a limit block 8 is provided at the bottom of the opposite side of the two guide strips 6, which is used to cooperate with the pressure block 13 on the pull rod 5 to form a limit. A flange 9 is provided on the top of the protective cover 1, which is turned up toward its outer wall, to facilitate the removal of the protective cap, wherein the guide groove 7 runs through the flange 9.

[0028] The connector protective cap of this embodiment cooperates with the pull rod 5 of the connector by designing a locking structure. When installing the protective cap, first rotate the pull rod 5 to rotate the pressure block 13 on the pull rod 5 to an upward position, then align the guide groove 7 of the protective cap with the pressure block 13 on the pull rod 5, so that the pressure block 13 can pass through the bottom of the guide groove 7, and then press the protective cap into the gap between the connector housing 4 and the terminal 2, and finally rotate the pull rod 5 to make the pressure block 13 on the pull rod 5 squeeze the limit block 8. Since the pressure block 13 interferes with the limit block 8, the protective cap cannot be loosened, which further improves the stability of the installation of the protective cap, prevents it from falling off during subsequent circulation, and makes disassembly and assembly more convenient.

[0029] Preferably, the two stop blocks 8 are provided with a first inclined surface 10 on the opposite side, and the first inclined surface 10 is inclined downward along the symmetric center line of the two guide strips 6. The first inclined surface 10 cooperates with the pressure block 13 to form an interference limit, which can improve the stability of the limit. Furthermore, the two stop blocks 8 are provided with a second inclined surface 11 at the bottom of the side away from the protective cover 1, and the second inclined surface 11 is inclined downward and toward the side close to the protective cover 1. The second inclined surface 11 is equivalent to a guide angle, which can facilitate the insertion of the protective cover 1 into the housing 4.

[0030] Preferably, the sealing ring 3 and the inner wall of the protective cover 1 are interference fit to ensure its sealing performance, and the outer wall of the protective cover 1 and the inner wall of the shell 4 are clearance fit, and the fitting tolerance is 10-20 threads. In this way, while satisfying the initial sealing, it is convenient for insertion and removal.

[0031] Preferably, chamfers 12 are provided on both the inner wall and the outer wall of the bottom of the protective cover 1 to facilitate the insertion of the protective cover 1 .

[0032] Preferably, the protective cover 1, guide strip 6, limit block 8, and flange 9 are all made of nylon or rubber. Specifically, the material can be made of high-temperature resistant rubber material to ensure the high-temperature resistance of the protective cap; it can not only meet the high-temperature resistant test requirements, but also has a certain plasticity, which is convenient for pressing into the connector.

[0033] Preferably, the protective cover 1, the guide strip 6, the limit block 8 and the flange 9 are an integrally formed structure, which is easy to manufacture and has better structural strength.

[0034] Preferably, a model label (not shown in the figure) is also provided on the top of the protective cover 1. The model label can be set on the protective cover 1 in the form of inkjet coding or engraving to facilitate identification of the protective cover 1.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A connector protective cap, characterized in that: The invention comprises a protective cover (1) with a hollow structure, wherein the inner wall size of the protective cover (1) is larger than the outer wall size of the terminal (2) of the connector, and the inner wall size of the protective cover (1) is matched with the size of the sealing ring (3) at the bottom of the outer wall of the terminal (2), and the outer wall size of the protective cover (1) is matched with the inner wall size of the housing (4) of the connector, and both sides of the protective cover (1) are provided with locking structures that can cooperate with the pull rod (5) of the connector to lock the protective cover (1) on the connector, and the locking structure comprises two guide strips (6), and the two guide strips (6) are symmetrically installed on the side of the protective cover (1) to form a guide groove (7), and the bottom of the two opposite sides of the two guide strips (6) are provided with a limit block (8), and the top of the protective cover (1) is provided with a flange (9) turned up toward its outer wall, and the guide groove (7) passes through the flange (9).

2. A connector protective cap according to claim 1, characterized in that: A first inclined surface (10) is provided on one side opposite to the two limit blocks (8), and the first inclined surface (10) is arranged to be inclined downward along the symmetry center line of the two guide strips (6).

3. A connector protective cap according to claim 1, characterized in that: A second inclined surface (11) is provided at the bottom of the two limit blocks (8) on the side away from the protective cover (1), and the second inclined surface (11) is inclined downward and toward the side close to the protective cover (1).

4. A connector protective cap according to claim 1, characterized in that: There is an interference fit between the sealing ring (3) and the inner wall of the protective cover (1), and there is a clearance fit between the outer wall of the protective cover (1) and the inner wall of the shell (4).

5. The connector protective cap according to claim 1, characterized in that: The inner wall and the outer wall of the bottom of the protective cover (1) are both provided with chamfers (12).

6. A connector protective cap according to claim 1, characterized in that: The protective cover (1), guide strip (6), limit block (8) and flange (9) are all made of nylon or rubber.

7. A connector protective cap according to claim 6, characterized in that: The protective cover (1), the guide strip (6), the limit block (8) and the flange (9) are an integrally formed structure.

8. A connector protective cap according to any one of claims 1 to 7, characterized in that: A model label is also provided on the top of the protective cover (1).

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