Terminal locking sheet and connector assembly

Abstract

The utility model discloses a terminal locking sheet and a connector assembly, which belong to the technical field of connectors, and comprise a clamping part and an abutting part, the abutting part is located at one end of the clamping part, and the width of the abutting part is greater than that of the clamping part; one side of the abutting part is provided with an abutting surface used for abutting against and attaching to the tail end of the metal terminal, the connector comprises a connector base and any one of the terminal locking pieces, the terminal locking pieces are additionally arranged, the metal terminal is additionally fixed, and additional holding force is provided, so that the terminal locking pieces can be locked, and the terminal locking pieces can be locked. The terminal locking sheets can enable the terminals to provide holding force in the connector base, so that the terminals are not easy to fall off, and the barbs are prevented from losing efficacy.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a terminal locking piece and a connector assembly. Background Art

[0002] The connector is the main component for electrical connection and signal transmission between devices in an electronic system. A socket is provided in the plastic shell, and a metal pin is inserted into the plastic shell. In order to prevent the metal pin from falling off from the plastic shell, a mutually cooperating stop structure is often set between the metal pin and the plastic shell. However, the existing stop structure is not ideal, and the metal pin is still prone to falling off, and the reliability is poor. The terminal position retaining device (TPA device) plays a key role in the connector. This device is used to ensure the stable position of the connector terminal to prevent displacement or loosening under vibration or external force. It may cooperate with the terminal and the connector body through physical locking or mechanical support to ensure that the terminal maintains the correct position inside the connector.

[0003] Prior art, such as a TPA locking structure and a TPA locking piece thereof disclosed in Chinese patent publication number CN217983789U, wherein the TPA locking structure comprises a connector housing and a TPA locking piece, wherein a terminal is installed in a terminal hole on the connector housing, and the TPA locking piece is inserted into a TPA slot provided on the connector housing to perform secondary fixation on the terminal, wherein the TPA locking piece comprises a main body and side insert arms provided on both sides of the main body, wherein the side insert arms are used to engage with the connector housing snap-fit ​​to realize the positioning of the TPA locking piece in a pre-installed position or a locked position, and a terminal fixing portion is further provided on the main body, wherein the terminal fixing portion is used to engage with a positioning groove on an outer peripheral surface of the terminal when the TPA locking piece is in a locked position to realize secondary fixation of the terminal.

[0004] The structure of the above-mentioned TPA locking plate is relatively complex, resulting in a complex manufacturing process, high cost, and low versatility. Utility Model Content

[0005] The utility model provides a terminal locking piece and a connector assembly. Through the cooperation of a simple terminal locking piece structure and a connector base, the metal terminal can be inserted into the connector base more stably and is not easy to fall out.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A terminal locking piece comprises a clamping portion and an abutting portion, wherein the abutting portion is located at one end of the clamping portion and has a width greater than that of the clamping portion; and an abutting surface for abutting against the end of a metal terminal is provided on one side of the abutting portion.

[0008] An optimal technical solution of the present utility model is that the abutting surface is arranged as a plane.

[0009] An optimal technical solution of the utility model is that it further comprises a mounting portion, which is located at the other end of the clamping portion, and the mounting portion and the abutting portion are symmetrically arranged, and the width of the mounting portion is greater than the width of the clamping portion.

[0010] An optimal technical solution of the present invention is that the material of the terminal locking piece is elastic material.

[0011] A preferred technical solution of the present invention is that the clamping portion, the abutting portion and the mounting portion are integrally formed.

[0012] A preferred technical solution of the utility model is that a side of the clamping portion close to the abutting surface is arranged in an arc shape.

[0013] A connector assembly comprises a connector base and a terminal locking piece as described above, wherein one side of the connector base is provided with a plurality of inner grooves for inserting metal terminals, and the outer top of each inner groove is provided with a snap-in groove for installing the terminal locking piece; when the terminal locking piece is snapped into the snap-in groove, the snap-in portion is located in the snap-in groove, and the abutting portion abuts against the metal terminal.

[0014] An optimal technical solution of the utility model is that a circle of protrusions is provided on the outer side of the connector base, and notches are provided at positions of the protrusions corresponding to the clamping grooves, and the width of the notches is smaller than the width of the clamping grooves.

[0015] An optimal technical solution of the utility model is that the groove bottom of the clamping groove is configured to be arc-shaped, and the side of the clamping portion close to the abutting surface is configured to be arc-shaped, so that the clamping portion fits the groove bottom of the clamping groove.

[0016] The preferred technical solution of the utility model is that the inner groove wall is provided with an inclined surface for abutting against the barbs of the metal terminal to limit the metal terminal from escaping from the connector base, and an inclined platform is provided at the outer notch of the inner groove.

[0017] A preferred technical solution of the present invention is that the width of the slot opening of the clamping slot is smaller than the width of the interior of the clamping slot.

[0018] The beneficial effects of the utility model are:

[0019] (1) The terminal locking piece is a separate part with a simple structure, which makes it convenient for the user to install the terminal locking piece on the connector base.

[0020] (2) The terminal locking piece and the connector base are clamped together through the clamping portion and the clamping groove, which can clamp the terminal locking piece more effectively.

[0021] (3) A protrusion is provided on the outer side of the connector base, a snap-in groove is provided inside the protrusion, and the width of the slot of the snap-in groove is smaller than the width inside the snap-in groove, so that the snap-in portion is more stable when located in the snap-in groove.

[0022] (4) The position where the bottom of the clamping groove fits with the clamping part is set to an arc shape, and a matching arc shape is also set on the clamping part, so that the clamping part and the clamping groove fit more closely.

[0023] (5) The terminal locking piece is integrally formed to reduce processing costs and make the structure more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the terminal locking piece provided in a specific embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the overall structure of the connector assembly provided in a specific embodiment of the utility model;

[0026] Figure 3 It is a schematic diagram of the overall structure of the connector assembly provided in a specific embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the overall structure of the connector assembly provided in a specific embodiment of the utility model;

[0028] Figure 5 yes Figure 4 A is an enlarged schematic diagram;

[0029] Figure 6 It is a stereoscopic diagram of the overall structure of the terminal locking piece, the connector base and the metal terminal provided in a specific embodiment of the utility model;

[0030] Figure 7 It is a front view of the overall structure of the terminal locking piece, the connector base and the metal terminal provided in a specific embodiment of the utility model;

[0031] Figure 8 yes Figure 7 Section view along AA;

[0032] Fig. 9 It is a schematic diagram of the overall structure of the connector base provided in a specific embodiment of the utility model;

[0033] Fig.10 yes Fig. 9 Cross-section along BB;

[0034] In the figure:

[0035] 1. Snap-fitting part; 2. Abutting part; 201. Abutting surface; 3. Metal terminal; 5. Mounting part; 6. Connector base; 601. Inner groove; 602. Snap-fitting groove; 603. Inclined surface; 604. Inclined platform; 605. Protrusion; 606. Notch. DETAILED DESCRIPTION

[0036] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0037] like Figure 1-10 As shown, the utility model provides a terminal locking piece and a connector assembly, the terminal locking piece includes a clamping portion 1, one end of the clamping portion 1 is provided with an abutting portion 2, the abutting portion 2 is used to abut and fit with the end of the metal terminal 3, the connector assembly includes a connector base 6 and the aforementioned terminal locking piece, the terminal locking piece is inserted into the connector base 6, the metal terminal 3 in the connector base 6 is abutted, providing additional holding force, in case the barb of the metal terminal 3 fails, the terminal locking piece can provide holding force for the metal terminal 3 in the connector base 6, and it is not easy to fall off.

[0038] The terminal locking piece also includes a mounting portion 5, which is located at the other end of the clamping portion 1. The mounting portion 5, the clamping portion 1 and the abutting portion 2 are integrally formed to increase stability and reduce processing difficulty.

[0039] An abutting surface 201 is provided on one side of the abutting portion 2 close to the metal terminal 3 . When the terminal locking piece is inserted into the connector base 6 , the abutting surface 201 abuts against the end of the metal terminal.

[0040] In order for the terminal locking piece to lock the metal terminal 3 more stably, the abutting surface 201 is configured as a plane matched with the metal terminal 3 .

[0041] The terminal locking piece is made of elastic material. One side of the connector base 6 is provided with a plurality of inner grooves 601 for inserting the metal terminals 3 . The top of the inner groove 601 is provided with a clamping groove 602 for clamping the terminal locking piece.

[0042] In order to stably clamp the terminal locking piece, a circle of protrusions 605 is provided on the outer side of the connector base 6, and a slot 606 is opened at the position corresponding to the protrusion 605 and the clamping groove 602. The width of the slot 606 is smaller than the width of the clamping groove 602, so that the clamping part 1 can pass through the slot 606, that is, pass through between the protrusions 605, and be clamped in the clamping groove 602. At the same time, the slot 606 of the protrusion 605 can also clamp the terminal locking piece, so that the terminal locking piece is not easy to fall out of the clamping groove 602, so that the abutting part 2 is abutted or fitted with the metal terminal 3, so that the metal terminal 3 can provide a holding force in the connector base 6 and is not easy to fall off.

[0043] The bottom of the clamping groove 602 is configured to be an arc shape, and the side of the clamping portion 1 close to the abutting surface 201 is configured to be a matching arc shape, thereby increasing the adaptability and stability of the clamping portion 1 and the clamping groove 602 .

[0044] The mounting portion 5 is convenient for the user to grasp, and the terminal locking piece is clamped into the connector base 6 by grasping the mounting portion 5. The mounting portion 5 and the abutting portion 2 are symmetrically arranged, and the widths of the mounting portion 5 and the abutting portion 2 are both greater than the width of the clamping portion 1, thereby increasing the stability of the terminal locking piece.

[0045] The inner groove 601 has a groove wall provided with an inclined surface 603 for abutting against the barb of the metal terminal 3 to limit the metal terminal 3 from escaping from the connector base 6 , and an inclined platform 604 is provided at the outer groove opening of the inner groove 601 , so that the metal terminal 3 is more stably fixed in the inner groove 601 .

[0046] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A terminal locking piece, characterized in that: It comprises a clamping portion (1) and an abutting portion (2), wherein the abutting portion (2) is located at one end of the clamping portion (1), and the width of the abutting portion (2) is greater than the width of the clamping portion (1); One side of the abutment portion (2) is provided with an abutment surface (201) for abutting against the end of the metal terminal (3).

2. The terminal locking piece according to claim 1, characterized in that: The abutting surface (201) is configured as a plane.

3. The terminal locking piece according to claim 1, characterized in that: It also comprises a mounting portion (5), which is located at the other end of the clamping portion (1), and the mounting portion (5) and the abutting portion (2) are symmetrically arranged, and the width of the mounting portion (5) is greater than the width of the clamping portion (1).

4. The terminal locking piece according to claim 1, characterized in that: The terminal locking piece is made of elastic material.

5. The terminal locking piece according to claim 3, characterized in that: The clamping portion (1), the abutting portion (2) and the mounting portion (5) are integrally formed.

6. The terminal locking piece according to claim 1, characterized in that: A side of the clamping portion (1) close to the abutting surface (201) is arranged in an arc shape.

7. A connector assembly, characterized in that: It comprises a connector base (6) and a terminal locking piece according to any one of claims 1 to 6, a side close to the connector base (6) is provided with a plurality of inner grooves (601) for inserting metal terminals (3), and a clamping groove (602) for installing the terminal locking piece is provided at the top of the outer side of each inner groove (601); When the terminal locking piece is clamped in the clamping groove (602), the clamping portion (1) is located in the clamping groove (602), and the abutting portion (2) abuts against the metal terminal (3).

8. The connector assembly according to claim 7, characterized in that: A circle of protrusions (605) is arranged on the outer side of the connector base (6), and slots (606) are provided at positions of the protrusions (605) corresponding to the clamping slots (602), and the width of the slots (606) is smaller than the width of the clamping slots (602).

9. The connector assembly according to claim 7, characterized in that: The bottom of the clamping groove (602) is arranged in an arc shape, and the side of the clamping portion (1) close to the abutment surface (201) is arranged in an arc shape, so that the clamping portion (1) fits the bottom of the clamping groove (602).

10. The connector assembly according to claim 7, characterized in that: The inner groove (601) has a groove wall provided with an inclined surface (603) for abutting against the barb of the metal terminal (3) to limit the metal terminal (3) from coming out of the connector base (6), and an inclined platform (604) is provided at the outer groove opening of the inner groove (601).

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