Single-contact terminal, connector female end and connector

Abstract

The utility model relates to a single-contact terminal, a connector female end and a connector. The single-contact terminal comprises a wiring portion, a connecting portion and a contact portion, one end of the connecting portion is connected with the wiring portion, the other end of the connecting portion is connected with the contact portion, the wiring portion is used for being connected with a cable, and the contact portion is used for being electrically connected with other terminals. The contact part comprises a force arm and a contact head, one end of the force arm is fixedly connected with the connecting part, the contact head is fixedly connected with the other end of the force arm, the force arm and the connecting part are arranged at an angle, the contact head and the force arm are arranged at an angle, the slope of the force arm and the slope of the contact head are opposite, and when the terminal is in contact with other terminals, the contact head is in contact with the other terminals. And the force arm deforms towards the direction of the contact head, so that the contact surface between the contact head and other terminals is larger. The single-contact terminal is more stable in contact with a male end, contact impedance is effectively reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of electric connectors, in particular to a single-contact terminal, a connector female end and a connector. Background Art

[0002] Electricity is indispensable in modern life and production, and the connection between circuits is inseparable from connectors. As a component that can simply and conveniently connect different circuits, connectors are also divided into different types of connectors according to different uses and structures. A single-contact connector is a more commonly used connector, including a male end and a female end. The male end can be inserted into the female end to achieve the connection and conduction of the circuit. The female end includes a base and a terminal. The base is used to fix the terminal, and the terminal is generally a metal contact piece, which is used to contact the male end to conduct the circuit. In the prior art, in order to maintain good contact between the terminal and the male end, the terminal is usually designed to have a certain bending structure so that the terminal is squeezed when the male end is inserted into the base, so that the terminal and the male end are in close contact under the action of elastic force. However, the existing terminals will be deformed due to long-term extrusion after long-term use, resulting in weakening of the elastic force or even failure, and problems such as poor circuit contact will occur, affecting the power experience and power safety. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a single-contact terminal, a connector female end and a connector.

[0004] A single-contact terminal comprises a wiring portion, a connecting portion and a contact portion, wherein one end of the connecting portion is connected to the wiring portion, and the other end is connected to the contact portion, the wiring portion is used to connect to a cable, and the contact portion is used to electrically connect to other terminals; the contact portion comprises a force arm and a contact head, one end of the force arm is fixedly connected to the connecting portion, and the contact head is fixedly connected to the other end of the force arm, the force arm is arranged at an angle to the connecting portion, the contact head is arranged at an angle to the force arm, and the slopes of the force arm and the contact head are opposite, and when the terminal contacts other terminals, the force arm is deformed toward the contact head, so that the contact surface of the contact head with the other terminals is larger.

[0005] The single-contact terminal described in the utility model has a special arrangement for the contact portion, which is divided into a force arm and a contact head, and the two are arranged at an angle, so that the deformation direction of the force arm is specific when the terminal contacts the contact portion, thereby obtaining a larger contact surface with the terminal, thereby improving the contact stability and effectively reducing the contact impedance.

[0006] Furthermore, the thickness of the force arm gradually decreases from the end connected to the connection part to the end connected to the contact head. By setting the force arm with inconsistent thickness, the end of the force arm connected to the connection part is thicker, a more stable connection performance is obtained, and the deformation fatigue degree of the force arm can be reduced, thereby extending the service life.

[0007] Further, the connecting portion includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are fixedly connected at an angle, the wiring portion is fixedly connected to one end of the first connecting portion away from the second connecting portion, and the contact portion is fixedly connected to one end of the second connecting portion away from the first connecting portion.

[0008] Further, the first connecting portion is provided with a horizontal end and a vertical end that are perpendicular to each other. One side surface of the horizontal end is fixedly connected to the wiring portion, and the side surface of the vertical end opposite to the wiring portion is fixedly connected to one end of the second connecting portion.

[0009] Moreover, the present utility model also provides a female connector end, which includes a base and several of the above-mentioned terminals. The base is provided with several terminal holes, and the several terminals are respectively arranged in the terminal holes. The wiring portion protrudes from the base, the connecting portion is snap-fitted into the base, and the contact portion is located in the base.

[0010] Further, an installation groove is provided on the inner side surface of the terminal hole, and the connecting portion is snap-fitted into the installation groove.

[0011] Further, a limiting groove is provided on the inner wall surface of the terminal hole adjacent to the contact portion. The length and width dimensions of the limiting groove are equivalent to those of the contact portion, and the depth is less than the thickness of the contact portion.

[0012] Further, a chamfer is provided at the opening of the terminal hole facing the male end side.

[0013] Meanwhile, the present utility model also provides a connector, which includes the above-mentioned female connector end and a male end that matches it.

[0014] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0015] Figure 1 Schematic diagram of a single-contact terminal in the prior art;

[0016] Figure 2 Schematic diagram of the single-contact connector of the present utility model;

[0017] Figure 3 Schematic diagram of the terminal of the present utility model;

[0018] Figure 4 Top view of the terminal of the present utility model;

[0019] Figure 5 Side view of the terminal of the present utility model;

[0020] Figure 6Rear view of the base of the present utility model;

[0021] Figure 7 Front view of the base of the present utility model;

[0022] Figure 8 Bottom view of the internal structure model of the terminal hole of the base of the present utility model;

[0023] Figure 9 Top view of the internal structure model of the terminal hole of the base of the present utility model. Detailed implementation manners

[0024] Please refer to Figure 1 , the existing single - contact connector terminals generally include a wiring part, a connecting part and a contact part. The wiring part is used for connecting with a cable, the connecting part is used for connecting the wiring part and the contact part, and the contact part is used for making contact connection with a male terminal. In the prior art, in order to improve the connection stability between the contact part and the male terminal, a certain bend or protrusion is provided for the contact part, so that the male terminal squeezes the bend or protrusion when inserted to make full contact with the contact part. However, the existing contact part has a uniform force - arm thickness, which brings two problems: one is that the contact force provided by the force - arm with uniform thickness is small, making the contact between the male terminal and the terminal unstable and the connection resistance large; the other is that it is easy to generate fatigue after long - term use, so that the elastic deformation turns into plastic deformation and the contact fails.

[0025] Therefore, after in - depth research, the inventor proposed a connector, including a female connector end and a matching male connector end. The female connector end of the connector includes a base and a single - contact terminal. By redesigning the shape and structure of the single - contact terminal, the force - arm is bent and its thickness is made non - uniform, thereby obtaining a more stable contact with the male terminal and reducing the contact impedance and deformation fatigue.

[0026] Please refer to Figure 2 , a connector includes a female end and a male end. The male end is inserted into the female end to connect the circuit. The female end includes a plurality of single - contact terminals 10 and a base 20. The base 20 is provided with a plurality of terminal holes 21, and a plurality of the single - contact terminals 10 are respectively installed in a plurality of the terminal holes 21 in one - to - one correspondence.

[0027] Please refer to Figures 3 - 5 , the single - contact terminal 10 includes a wiring part 11, a connecting part 12 and a contact part 13. One end of the connecting part 12 is connected to the wiring part 11, and the other end is connected to the contact part 13. The wiring part 11 is used for connecting with a cable, and the contact part 13 is used for making electrical connection with the male - terminal.

[0028] The connecting part 12 is divided into a first connecting part 121 and a second connecting part 122 which are fixedly connected. The first connecting part 121 and the second connecting part 122 are angularly connected. One end of the first connecting part 121 away from the second connecting part 122 is connected to one end of the wiring part 11, and one end of the second connecting part 122 away from the first connecting part 121 is connected to the contact part 13. This setting can fix the terminal 10 to the base 20 more firmly. In this embodiment, the first connecting part 121 is bent at the middle by 90 degrees, so that the two ends of the first connecting part 121 are respectively a horizontal end and a vertical end perpendicular to each other. The side surface of the horizontal end of the first connecting part 121 is fixedly connected to the wiring part 11, and the side surface of the vertical end opposite to the wiring part 11 is fixedly connected to one end of the second connecting part 122. The other end of the second connecting part 122 is fixedly connected to the contact part 13.

[0029] The contact part 13 includes a force arm 131 and a contact head 132. One end of the force arm 131 is fixedly connected to the second connecting part 122, and the other end is fixedly connected to the contact head 132. The force arm 131 is angularly arranged with the second connecting part 122, and the contact head 132 is also angularly arranged with the force arm 131, and the slopes of the force arm 131 and the contact head 132 are opposite, so that the axis of the contact head 132 is parallel to the axis of the second connecting part 122 but not collinear. When viewed from above, the three form an approximately reverse Z shape. When contacting other terminals, the force arm 131 deforms in the direction of the contact head 132, so that the contact surface between the contact head 131 and other terminals is larger, which is beneficial to improving the contact stability and reducing the contact impedance. Preferably, the thickness of the force arm 131 gradually thins from the end connected to the second connecting part 122 to the end connected to the contact head 132. The force arm 131 with inconsistent thickness can increase the normal pressure when contacting other terminals, further improving the contact stability; moreover, the thicker end connected to the second connecting part 122 can provide a greater supporting force, reduce the fatigue degree of the deformation of the force arm 131, slow down the fatigue aging, and extend the service life. More preferably, a convex contact point is provided on the side of the contact head 132 in contact with the male end to enhance the wear resistance of the contact head and improve the service life.

[0030] Please refer to Figures 6 - 9, the base 20 is provided with a plurality of terminal holes 21. The terminal holes 21 can be arranged in a row according to actual needs, or can be arranged in multiple rows. In this embodiment, the terminal holes 21 are arranged in two rows. An installation groove 211 is formed on the inner side surface of the terminal hole 21. The length and width of the installation groove 211 are equivalent to those of the second connection portion 122 of the terminal 10. When the terminal 10 is installed in the terminal hole 21, the second connection portion 122 is clamped in the installation groove 211. Preferably, protruding installation edges are provided on the upper and lower surfaces of the second connection portion 122 of the terminal 10, which are used to increase the contact friction force with the inner wall of the installation groove 211 when the second connection portion 122 is clamped in the installation groove 211, so as to improve the installation stability.

[0031] Preferably, a positioning groove 212 is provided at the opening of the terminal hole 21 facing the wiring portion 11. The depth of the positioning groove 212 is equivalent to the width of the first connection portion 121. When the second connection portion 122 is clamped in the installation groove 211, the bent end of the first connection portion 121 is clamped in the positioning groove 212. By providing the positioning groove 212 to position the bent first connection portion 121, it is avoided that it is deformed and displaced during use, affecting the stability of the circuit.

[0032] More preferably, a limiting groove 213 is formed on the inner wall surface of the terminal hole 21 adjacent to the contact portion 13. The length and width dimensions of the limiting groove 213 are equivalent to those of the contact portion 13, and the depth is less than the thickness of the contact portion 13. When the male end is inserted into the terminal hole 21, the male end presses the contact portion 13 to deform it. By providing the limiting groove 213 to guide the deformation direction and position of the contact portion 13, so that after deformation, it is placed in the limiting groove 213, which is beneficial to maintaining the best contact position with the male end and realizing a stable contact effect.

[0033] Optionally, a chamfer is provided at the opening of the terminal hole 21 facing the male end. By providing the chamfer, it is beneficial to guide the male end to be inserted into the terminal hole.

[0034] During use, the terminal 10 is installed in the base 20. During installation, the first connection portion 121 is aligned with the positioning groove 212, the second connection portion 122 is aligned with the installation groove 211, and the contact portion 13 is aligned with the limiting groove 213 and then inserted into the terminal hole 21, and the corresponding cable is electrically connected to the wiring portion 11 of the terminal 10 to complete the installation of the female end. When the circuit needs to be connected, the male end is inserted into the terminal hole 21. At this time, the male end presses the contact portion 13, causing it to deform in the thickness direction and generating corresponding elastic force to contact and connect with the male end, realizing circuit conduction.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "vertical", "horizontal", "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] The above-described embodiments only represent some embodiments of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and the present utility model also intends to include these changes and modifications.

Claims

1. A single-contact terminal, characterized in that: It includes a wiring part, a connecting part and a contact part. One end of the connecting part is connected to the wiring part, and the other end is connected to the contact part. The wiring part is used for connecting with a cable, and the contact part is used for electrically connecting with other terminals. The contact part includes a force arm and a contact head. One end of the force arm is fixedly connected to the connecting part, and the contact head is fixedly connected to the other end of the force arm. The force arm is arranged at an angle with the connecting part, and the contact head is arranged at an angle with the force arm, and the slopes of the force arm and the contact head are opposite. When the terminal contacts with other terminals, the force arm deforms towards the contact head direction, so that the contact area between the contact head and other terminals is larger.

2. The single-contact terminal according to claim 1, characterized in that: The thickness of the force arm gradually becomes thinner from the end connected to the connecting part to the end connected to the contact head.

3. The single-contact terminal according to claim 1, wherein: The connecting part includes a first connecting part and a second connecting part. The first connecting part and the second connecting part are fixedly connected at an angle. The wiring part is fixedly connected to one end of the first connecting part away from the second connecting part, and the contact part is fixedly connected to one end of the second connecting part away from the first connecting part.

4. The single-contact terminal according to claim 3, characterized in that: The first connecting part is divided into a horizontal end and a vertical end that are perpendicular to each other. One side surface of the horizontal end is fixedly connected to the wiring part, and the side surface of the vertical end opposite to the wiring part is fixedly connected to one end of the second connecting part.

5. A female connector, characterized in that: The female terminal includes a base and several terminals according to any one of claims 1-4. The base is provided with several terminal holes, and the several terminals are respectively arranged in the terminal holes. The wiring part protrudes from the base, the connecting part is clamped in the base, and the contact part is located in the base.

6. The female connector according to claim 5, wherein: An installation groove is provided on the inner side surface of the terminal hole, and the connecting part is clamped in the installation groove.

7. The female connector according to claim 6, characterized in that: A limiting groove is provided on the inner wall surface of the terminal hole adjacent to the contact part. The length and width dimensions of the limiting groove are equivalent to the length and width dimensions of the contact part, and the depth is less than the thickness of the contact part.

8. The female connector according to claim 7, wherein: A chamfer is provided at the opening of the terminal hole facing the male terminal side.

9. A connector, characterized in that: It includes a connector female terminal according to any one of claims 6-8 and a male terminal that matches it.

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