A connection assembly

Abstract

The utility model relates to the technical field of connector, specifically relate to a connecting assembly, the connecting assembly includes the casing, terminal, the bolt is worn from top to bottom on the terminal, the upper portion of bolt is equipped with the radial stretch out and prevent the department of taking off, the inside wall of annular closeout step is equipped with the avoidance groove in the upper end of accommodating cavity of being equipped with in the casing, the avoidance groove is from top to bottom through annular closeout step. The department of taking off is entered accommodating cavity from the outside of casing through avoidance groove, when bolt rotates to the predetermined position, the lower end surface of annular closeout step and the department of taking off are opposite to set up on the bolt's taking off path. The scheme need not to install the stop ring and can realize bolt preloading, reduce the part quantity, and convenient for the transportation, assembly of product.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and more specifically, to a connection component. Background Technology

[0002] Some connectors have terminals inside their housings. After the connector is connected to a mating connector, the terminals are locked together using bolts. To facilitate the transport of the connector and its connection to the mating connector, bolts are often pre-installed on the terminals. A common pre-installation method is to add a retaining ring to the bolt after it is inserted into the locking hole of the terminal. The retaining ring engages with the terminal when the bolt moves out of the locking hole, thus preventing the bolt from exiting the locking hole and achieving the purpose of pre-installation. However, this pre-installation method increases the number of parts and makes the transportation and assembly process more inconvenient. Utility Model Content

[0003] This utility model provides a connecting component to solve the problems of a large number of parts and inconvenient transportation and assembly procedures caused by the need to install anti-reverse rings in the above-mentioned pre-assembly methods.

[0004] The present invention provides a connecting component, including a housing and a terminal. A bolt is inserted through the terminal from top to bottom, and the upper part of the bolt is provided with an anti-loosening part extending radially. The housing is provided with a receiving cavity, and the upper end of the receiving cavity is provided with an annular constriction step. The inner wall of the annular constriction step is provided with a relief groove, which runs through the annular constriction step from top to bottom.

[0005] The anti-detachment part enters the receiving cavity from the outside of the shell through the clearance groove. When the bolt is rotated to the predetermined position, the lower end face of the annular constriction step is positioned opposite the anti-detachment part on the bolt's removal path.

[0006] Optionally, an obstruction may be provided within the clearance groove.

[0007] Optionally, the clearance groove extends circumferentially, and the upper and lower sides of the clearance groove are respectively provided with a first clearance opening and a second clearance opening. The first clearance opening and the second clearance opening are offset in the axial direction, and the obstruction part is located between the first clearance opening and the second clearance opening.

[0008] Optionally, the obstruction part is a protrusion structure, and the side of the obstruction part facing the first clearance opening forms a guide surface, and the side facing the second clearance opening forms an obstruction surface.

[0009] Optionally, the housing includes a metal outer shell and a plastic core, the terminals are fixedly assembled with the plastic core, the plastic core is inserted into the metal outer shell, and the annular constriction step is jointly formed by corresponding parts of the metal outer shell and the plastic core, wherein the upper side of the clearance groove is formed by the corresponding part of the metal outer shell and the lower side is formed by the corresponding part of the plastic core.

[0010] Optionally, the obstruction is provided on the upper side of the clearance groove.

[0011] Optionally, in the circumferential direction, the ratio of the distance between the second clearance opening and the adjacent end face of the clearance groove, and the distance between the second clearance opening and the obstruction part to the width of the anti-detachment part, is not greater than 0.5.

[0012] Optionally, in the axial direction, the ratio of the width of the groove to the thickness of the anti-detachment part is 1-1.5.

[0013] Optionally, a protective cap is provided on the upper part of the bolt, and an anti-loosening part is integrally set on the outside of the protective cap.

[0014] This solution has the following beneficial effects:

[0015] This design incorporates an annular stepped opening, combined with an anti-loosening feature on the bolt, to confine the bolt within the receiving cavity, achieving pre-assembly. A clearance groove allows the anti-loosening feature to pass through, enabling the bolt to be smoothly inserted into the cavity. Therefore, this design eliminates the need for a locking ring, reducing the number of parts and facilitating product transportation and assembly.

[0016] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0018] Figure 1 This is a structural diagram of the connecting components;

[0019] Figure 2 A schematic diagram showing the state of the anti-detachment part entering the receiving cavity through the second clearance opening (the flip cover is not shown);

[0020] Figure 3 This is a partial cross-sectional view of the connecting assembly after the bolt is rotated, passing through the bolt and the second clearance opening.

[0021] Figure 4 A partial structural diagram of the annular closing step of the connecting component from one perspective (flip cover not shown, after rotating the bolts);

[0022] Figure 5 A partial structural diagram of the annular closing step of the connecting component from another perspective (flip cover not shown, after rotating the bolts);

[0023] Figure 6 This is a schematic diagram of the bolt structure.

[0024] The diagram is marked as follows:

[0025] 1. Shell; 11. Metal outer shell; 12. Plastic core; 13. Receiving cavity;

[0026] 2. Flip cover;

[0027] 3. Annular closing step; 31. Clearance groove; 32. First clearance opening; 33. Second clearance opening; 34. Obstruction section; 341. Guide surface; 342. Obstruction surface;

[0028] 4. Bolts; 41. Protective caps; 42. Anti-detachment parts;

[0029] 5. Terminal. Detailed Implementation

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0033] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0034] like Figure 1-6 As shown, an embodiment of this utility model relates to a connecting component, which includes a housing 1 and a terminal 5. A bolt 4 is inserted through the terminal 5 from top to bottom, and the upper part of the bolt 4 is provided with a radially extending anti-detachment part 42. The housing 1 is provided with a receiving cavity 13, and the upper end of the receiving cavity 13 is provided with an annular constriction step 3. The inner wall of the annular constriction step 3 is provided with a relief groove 31, which passes through the annular constriction step 3 from top to bottom.

[0035] In this design, the anti-detachment part 42 enters the receiving cavity 13 from the outside of the housing 1 through the clearance groove 31. At the same time, the bolt 4 is also housed in the receiving cavity 13 and is mounted on the terminal 5. When the bolt 4 rotates to the predetermined position, the lower end face of the annular constriction step 3 and the anti-detachment part 42 are positioned opposite each other on the bolt 4's removal path. At this time, the bolt 4 can only move in the receiving cavity 13 and cannot be removed from the terminal 5 or the receiving cavity 13. This achieves the purpose of pre-installing and preventing the bolt 4 from detaching. Since this solution can achieve the pre-installation of the bolt 4 without the need to add a backlash ring, it reduces the number of parts and facilitates the transportation and assembly of the product. It has high application prospects and is also conducive to cost reduction and efficiency improvement.

[0036] Furthermore, to prevent the anti-detachment part 42 from coming out of the relief groove 31 and causing the bolt 4 to come out of the receiving cavity 13, and to meet the requirement of completely eliminating the risk of the bolt 4 unexpectedly coming out of the receiving cavity 13, such as Figure 4 , 5 As shown, in this embodiment, the clearance groove 31 is provided with an obstruction part 34. Therefore, in the event of vibration or accident, even if the anti-detachment part 42 enters the clearance groove 31, the anti-detachment part 42 cannot detach from the clearance groove 31 by itself due to the presence of the obstruction part 34, and thus the bolt 4 cannot detach from the receiving cavity 13 by itself.

[0037] like Figure 4 , 5 As shown, as a solution to further hinder the movement of the anti-detachment part 42 within the clearance groove 31, in this embodiment, the clearance groove 31 extends circumferentially, and the upper and lower sides of the clearance groove 31 are respectively provided with a first clearance opening 32 and a second clearance opening 33. The first clearance opening 32 and the second clearance opening 33 are offset axially, and the obstruction part 34 is located between the first clearance opening 32 and the second clearance opening 33. More specifically, as shown... Figure 2 , 5 As shown, the clearance groove 31 is not connected end to end in the circumferential direction, and at least the second clearance opening 33 is located at the end of the clearance groove 31 (of course, as a further modification of this embodiment, the first clearance opening and the second clearance opening can also be distributed at the two ends of the clearance groove in other embodiments). Thus, the anti-detachment part 42 can only have a unidirectional movement tendency from the second clearance opening 33 to the first clearance opening 32 in the circumferential direction. This structure can reduce the number of obstruction parts 34, that is, it is not necessary to set obstruction parts 34 on both sides of the first clearance opening 32, and the overall structure is simplified, and the operation method can also be simplified.

[0038] Furthermore, such as Figure 4 , 5As shown, in this embodiment, the obstruction part 34 is a protrusion structure, and the side of the obstruction part 34 facing the first clearance opening 32 forms a guide surface 341, and the side facing the second clearance opening 33 forms an obstruction surface 342. The guide surface 341 is inclined in a relatively circumferential direction, so as to facilitate the movement of the anti-detachment part 42 and pass over the obstruction part 34. The obstruction surface 342 is a relatively circumferentially perpendicular plane to provide sufficient obstruction to the reverse movement of the anti-detachment part 42.

[0039] Furthermore, considering the commonly used structural components of shell 1 within the field, such as Figure 1-5 As shown, in this embodiment, the housing 1 includes a metal outer shell 11 and a plastic core 12. The metal outer shell 11 is provided with a flip cover 2 at the corresponding receiving cavity 13. The terminal 5 is fixedly assembled with the plastic core 12. The plastic core 12 is inserted into the metal outer shell 11. The annular constriction step 3 is jointly formed by the corresponding parts of the metal outer shell 11 and the plastic core 12. The upper side of the clearance groove 31 is formed by the corresponding part of the metal outer shell 11 and the lower side is formed by the corresponding part of the plastic core 12.

[0040] Because the elastic deformation capacity of the plastic core 12 is higher than that of the metal outer shell 11, therefore, as Figure 4 , 5 As shown, in this embodiment, the obstruction part 34 is provided on the upper side of the clearance groove 31, thereby facilitating the anti-detachment part 42 to pass over the obstruction part 34.

[0041] Furthermore, to prevent the anti-detachment part 42 from getting stuck in the relief groove 31, which would hinder the bolt 4 from falling back into the receiving cavity 13, the ratios of the distance L1 between the second relief opening 33 and the adjacent end face F of the relief groove 31, the distance L2 between the second relief opening 33 and the obstruction part 34, and the width L3 of the anti-detachment part 42 in the circumferential direction are all no greater than 0.5. Figure 4-6 As shown, in this embodiment, the ratio of L1 to L3 is preferably 0.4, and the ratio of L2 to L3 is preferably 0.5 (L1, L2, and L3 shown in the attached figure are for illustrative purposes only and are not used as a basis for dimensional measurement; the specific ratios shall be based on the above data).

[0042] Furthermore, in order to ensure that the anti-detachment part 42 can move smoothly within the clearance groove 31 without tipping over and accidentally detaching from the clearance groove 31, the ratio of the width L4 of the groove to the thickness L5 of the anti-detachment part 42 in the axial direction is 1-1.5, such as... Figure 3 As shown, in this embodiment, the ratio of L4 to L5 is preferably 1.1 (L4 and L5 shown in the attached figure are only for illustrative purposes and are not used as a basis for dimensional measurement; the specific ratio shall be based on the data above).

[0043] Considering the anti-touch function of bolt 4 and to facilitate the formation of the anti-loosening part 42, such as Figure 3 , 6As shown, in this embodiment, the upper part of the bolt 4 is covered with a protective cap 41, and the anti-loosening part 42 is integrally set on the outside of the protective cap 41.

[0044] During assembly, the plastic core 12 is first installed into the metal casing 11. The corresponding parts of the plastic core 12 and the corresponding parts of the metal casing 11 together form a clearance groove 31. Then, the bolt 4 is installed into the receiving cavity 13, allowing the anti-detachment part 42 to enter the clearance groove 31 from the first clearance opening 32. The bolt 4 is then rotated to allow the anti-detachment part 42 to pass over the obstruction part 34 until the anti-detachment part 42 enters the receiving cavity 13 from the second clearance opening 33. Figure 2 As shown, bolt 4 is now housed in receiving cavity 13 and mounted on terminal 5. Rotating bolt 4 results in a rotation angle of 180°, i.e. Figure 3 As shown, the anti-detachment part 42 rotates with the bolt 4 to a predetermined position, and the anti-detachment part 42 is axially misaligned with the second clearance opening 33. At this time, due to the axial height of the receiving cavity 13, the bolt 4 can move relative to the terminal 5 within the allowable axial range of the receiving cavity 13. However, when the bolt 4 moves to the annular closing step 3, the lower end face of the annular closing step 3 engages with the anti-detachment part 42 to prevent the bolt 4 from continuing to come out, thus achieving the purpose of pre-installing the bolt 4. In addition, even if the anti-detachment part 42 enters the clearance groove 31 from the second clearance opening 33, due to the presence of the obstruction part 34 and its obstruction surface 342, the anti-detachment part 42 cannot continue to move towards the first clearance opening 32, further preventing the bolt 4 from falling off.

[0045] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A connecting assembly, comprising a housing and terminals, wherein bolts are threaded through the terminals from top to bottom, characterized in that: The bolt has a radially extending anti-loosening part at the top; The housing has a receiving cavity, and the upper end of the receiving cavity has an annular constriction step. The inner wall of the annular constriction step has a relief groove that runs through the annular constriction step from top to bottom.

2. A connection component as described in claim 1, characterized in that: The anti-detachment part enters the receiving cavity from the outside of the housing through the clearance groove. When the bolt is rotated to the predetermined position, the lower end face of the annular constriction step is positioned opposite the anti-detachment part on the bolt's removal path.

3. A connection component as described in claim 2, characterized in that: Obstruction parts are provided inside the clearance groove.

4. A connection component as described in claim 3, characterized in that: The clearance groove extends circumferentially, and the upper and lower sides of the clearance groove are respectively provided with a first clearance opening and a second clearance opening. The first clearance opening and the second clearance opening are offset in the axial direction, and the obstruction part is located between the first clearance opening and the second clearance opening.

5. A connection component as described in claim 4, characterized in that: The obstruction part has a protrusion structure, and the side of the obstruction part facing the first clearance opening forms a guide surface, and the side facing the second clearance opening forms an obstruction surface.

6. A connection component as described in claim 5, characterized in that: The housing includes a metal outer shell and a plastic core. The terminals are fixedly assembled with the plastic core, which is inserted into the metal outer shell. The annular constriction step is composed of corresponding parts of both the metal outer shell and the plastic core. The upper side of the clearance groove is formed by the corresponding part of the metal outer shell, and the lower side is formed by the corresponding part of the plastic core.

7. A connection component as described in claim 6, characterized in that: The obstruction is provided on the upper side of the clearance groove.

8. A connection component as described in any one of claims 4-7, characterized in that: In the circumferential direction, the ratio of the distance between the second clearance opening and the adjacent end face of the clearance groove, and the distance between the second clearance opening and the obstruction part to the width of the anti-detachment part, is not greater than 0.

5.

9. A connection component as described in any one of claims 4-7, characterized in that: In the axial direction, the ratio of the width of the groove to the thickness of the anti-detachment part is 1-1.

5.

10. A connection component as claimed in claim 1, characterized in that: The bolt is covered with a protective cap, and the anti-loosening part is integrated on the outside of the protective cap.

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