Female terminal anti-fatigue structure

Abstract

The utility model discloses an anti-fatigue structure of a female terminal, a clamping end of the female terminal comprises more than two elastic arms, and the outer wall of each elastic arm is provided with more than one convex hull. According to the utility model, the convex hull is arranged on the outer wall of the clamping end of the female terminal, so that the convex hull can be firstly pushed against the female end rubber shell in the insertion process of the male terminal, thereby achieving the purposes of reducing the deformation quantity of the elastic arm and further reducing the stress and fatigue deformation of the elastic arm; the problems that the clamping end of the female terminal is fatigued and cannot bounce under frequent operation or high-strength vibration, and the contact of the male end and the female end is instantaneously broken are solved, and the service life of the female terminal can be prolonged. Each elastic arm is arranged to be of a structure inclining towards the male terminal (hole groove), so that a certain extrusion force and retention force on the male terminal can still be kept under the condition that the deformation quantity of the elastic arms is small, and the hand feeling of plugging and the stability of the terminals after plugging cannot be influenced.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a fatigue-resistant structure for female terminals. Background Technology

[0002] After a period of use, many mating connectors experience a decrease in the feel of insertion and removal. This is primarily due to fatigue in the female terminal caused by repeated insertion and removal, resulting in deformation and compression. The structure used to hold the male terminal gradually deviates from its intended position and fails to return to its original position even under no stress. This weakens the clamping force between the female and male terminals, leading to a reduced insertion and removal feel. In production, materials with good fatigue resistance and conductivity, such as beryllium copper, are generally used for the female terminals. However, this results in higher material costs and difficulties in reducing production losses, leading to higher overall production costs.

[0003] For the reasons mentioned above, this utility model aims to further improve its fatigue resistance by improving the structure of the female terminal. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a fatigue-resistant structure for the female terminal. A protrusion is provided on the outer wall of the clamping end of the female terminal. During the insertion of the male terminal, the protrusion is first pushed against the rubber shell of the female end, thereby reducing the deformation of the elastic arm and thus slowing down its stress and fatigue deformation. This solves the problems of fatigue and failure to spring back at the clamping end of the female terminal under frequent operation or high-intensity vibration, and instantaneous breakage of the male and female end contact, and can extend the service life of the female terminal.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] The female terminal has a fatigue-resistant structure, with one end being a positioning end and the other end being a clamping end. The clamping end has a slot that extends axially and is adapted to the male terminal. The clamping end includes two or more elastic arms, and the inner walls of several elastic arms surround the slot. Each elastic arm has one or more protrusions that extend radially outward on its outer wall.

[0007] As a further explanation of the above technical solution:

[0008] In the above technical solution, each of the convex bulges is provided on the outer wall of the free end of the elastic arm.

[0009] In the above technical solution, the axial length of each convex hull is less than 1 / 3 of the axial length of the elastic arm.

[0010] In the above technical solution, the middle part of each elastic arm extends inclinedly toward the inside of the slot, and the inner wall of its free end is provided with a chamfer extending inclinedly toward the outside.

[0011] In the above technical solution, a plurality of protrusions arranged along the axial direction are formed on the outer wall of the positioning end, and each of the protrusions extends obliquely toward the outside of the female terminal.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By providing protrusions on the outer wall of the clamping end of the female terminal, the protrusions can be pushed against the female end shell during the insertion of the male terminal, thereby reducing the deformation of the elastic arm and thus slowing down its stress and fatigue deformation. This solves the problem of fatigue and failure to spring back of the female terminal clamping end under frequent operation or high-intensity vibration, and the instantaneous breakage of the male and female end contact, and can extend the service life of the female terminal. By setting each elastic arm to be inclined towards the male terminal (hole groove), a certain squeezing force and holding force can still be maintained on the male terminal when the deformation of the elastic arm is small, without affecting the feel of insertion and removal or the stability of the terminal after insertion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0014] Figure 2 yes Figure 1 Enlarged structural diagram of section A in the middle;

[0015] Figure 3 This is a schematic diagram of another embodiment of the present invention;

[0016] Figure 4 yes Figure 3 The diagram shows the assembly structure of the female terminal and the female terminal housing.

[0017] Figure 5 This is a schematic diagram of the symmetrical structure of the male and female terminals of the connector;

[0018] Figure 6 yes Figure 5 A magnified structural diagram of section B.

[0019] In the diagram: 100, female terminal; 200, female end housing; 300, male terminal; 400, male end housing; 10, positioning end; 20, clamping end; 30, slot; 1, elastic arm; 2, convex bulge; 3, chamfer; 4, protrusion. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] like Figure 1-2 As shown, the female terminal has a fatigue-resistant structure. One end of the female terminal 100 is a positioning end 10, and the other end is a clamping end 20. The middle part of the clamping end 20 has a slot 30 that extends axially and is adapted to the male terminal 300. The clamping end 20 includes two or more elastic arms 1. The inner walls of several elastic arms 1 surround the slot 30. Each elastic arm 1 has one or more protrusions 2 that extend radially outward on its outer wall.

[0023] In this embodiment, each convex 2 is provided on the outer wall of the free end of the elastic arm 1, and the axial length of each convex 2 is less than 1 / 3 of the axial length of the elastic arm 1.

[0024] like Figure 3 As shown, in another preferred embodiment of the present invention, the middle part of each elastic arm 2 extends inclinedly toward the inside of the slot 30, and the inner wall of its free end is provided with a chamfer 3 extending inclinedly toward the outside.

[0025] like Figure 1 , 3 As shown, in the above embodiment, a plurality of protrusions 4 arranged axially are formed on the outer wall of the positioning end 10, and each protrusion 4 extends obliquely toward the outside of the female terminal.

[0026] Figure 4 A schematic diagram of the assembly structure of the female terminal 100 and the female end housing 200 is shown. In application, the position and axial length of the protrusion 2 on the outer wall of the elastic arm 1 can be set according to the actual structure of the female end housing 200.

[0027] Figure 5-6 The diagram shows the structure after the female and male terminals of the connector are mated. It can be seen that the male terminal 300 presses the protrusion 2 on the female terminal 100 against the female terminal housing 200. Compared with the conventional straight-plate structure of the female terminal 100, the deformation of the female terminal 100 (elastic arm 1) in this utility model is smaller. Since the middle part of the elastic arm 1 is inclined and bent towards the hole groove 30 (male terminal 300), the male terminal 300 still maintains a certain squeezing force and holding force on the female terminal 100, which will not affect the feel of insertion and removal or the stability of the terminals after mating.

[0028] This invention provides a protrusion 2 on the outer wall of the clamping end 20 of the female terminal 100. During the insertion of the male terminal 300, the protrusion 2 is first pushed against the female end shell 200, thereby reducing the deformation of the elastic arm 1 and thus alleviating its stress and fatigue deformation. This solves the problem of fatigue at the clamping end of the female terminal not springing back under frequent operation or high-intensity vibration, and the instantaneous breakage of the male and female end contact, and can extend the service life of the female terminal. By setting each elastic arm 1 to be inclined towards the male terminal 300 (groove 30), even when the deformation of the elastic arm 1 is small, it can still maintain a certain squeezing force and holding force on the male terminal 300, without affecting the feel of insertion and removal or the stability of the terminal after insertion.

[0029] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the technical scope of this utility model.

Claims

1. A fatigue-resistant structure for a female terminal, wherein one end of the female terminal is a positioning end and the other end is a clamping end, and a groove extending axially and adapted to a male terminal is formed in the middle of the clamping end; characterized in that, The clamping end includes two or more elastic arms, and the inner walls of several elastic arms surround the slot. Each elastic arm has one or more protrusions extending radially outward on its outer wall.

2. The anti-fatigue structure for the female terminal according to claim 1, characterized in that, Each of the convex bulges is located on the outer wall of the free end of the elastic arm.

3. The fatigue-resistant structure for the female terminal according to claim 1, characterized in that, The axial length of each of the convex humps is less than 1 / 3 of the axial length of the elastic arm.

4. The anti-fatigue structure for the female terminal according to claim 1, characterized in that, The middle portion of each elastic arm extends inclined toward the inside of the slot, and the inner wall of its free end is provided with a chamfer extending inclined toward the outside.

5. The anti-fatigue structure for the female terminal according to any one of claims 1-4, characterized in that, The outer wall of the positioning end has a plurality of protrusions arranged along the axial direction, each of the protrusions extending obliquely toward the outside of the female terminal.

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