A terminal assembly

Abstract

The utility model discloses a kind of terminal assemblies, for and with the insertion of terminal plug, including the insertion of terminal of terminal body includes two elastic arms oppositely, the first face and the second face between two elastic arms oppositely form clamping space;Elastic contact part, respectively set on elastic arm, each elastic contact part includes at least one elastic conductive element wound on elastic arm, part elastic contact part on the first face and the second face protrude from the first face and the second face, and have the elastic deformation amount towards the first face and the second face;When the insertion of terminal is inserted into clamping space, elastic conductive element is extruded and deformed by the insertion of terminal, so that the axial side of elastic conductive element and the surface of the insertion of terminal form contact area, the utility model uses elastic conductive element winding elastic arm, when the insertion of terminal is inserted into clamping space, the axial side of elastic conductive element and the surface of the insertion of terminal form contact area, improve contact reliability, reduce contact resistance.

Description

Technical Field

[0001] This utility model relates to the field of electrical connections, and more specifically, to a terminal assembly. Background Technology

[0002] With the rapid development of new energy vehicles, the demand for high-voltage connectors is also increasing. One of the main functions of connectors in a vehicle is to transmit electrical energy. The transmission effect is mainly achieved by the terminal contacts. Current spring terminals have the following disadvantages: First, the circular opening is closed, and after the spring is inserted into the plug terminal, it must be covered with a special cover to prevent it from falling out, which complicates the assembly process. Second, after assembly, the spring and the mating terminal are prone to loosening, resulting in excessive temperature rise during power transmission, thus affecting the power transmission effect. Third, the contacts are only made by the arched part of the spring waist, resulting in fewer contacts, which increases power loss and excessive temperature rise during power transmission.

[0003] Therefore, there is an urgent need to design a new terminal structure to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for terminal assemblies to address the problems of easy detachment of the spring in the spring terminal, easy loosening of the spring when mating with the mating terminal, and insufficient contact points between the spring and the mating terminal, resulting in excessive temperature rise.

[0005] According to a first aspect of the present invention, a terminal assembly is provided for insertion into a mating terminal, comprising: a terminal body having one end as a mating end, the mating end including two opposing elastic arms, a clamping space being formed between a first surface and a second surface of the two elastic arms; elastic contact portions respectively disposed on the elastic arms, each elastic contact portion including at least one elastic conductive element wound around the elastic arm, a portion of the elastic contact portion located on the first surface and the second surface protruding from the first surface and the second surface, and having an elastic deformation amount toward the first surface and the second surface; when the mating terminal is inserted into the clamping space, the elastic conductive element is deformed by the compression of the mating terminal, such that the axial side of the elastic conductive element forms a contact area with the surface of the mating terminal.

[0006] Optionally, the elastic conductive element is a metal spring wire.

[0007] Optionally, each of the elastic arms has a groove on its surface, the metal spring wire is housed in the groove, and at least partially protrudes out of the groove.

[0008] Optionally, there are at least two grooves, spaced apart along the length of the elastic arm, and the metal spring wire is spirally wound around the groove of the elastic arm.

[0009] Optionally, the metal spring wire is spirally wound around the elastic arm with a constant pitch.

[0010] Optionally, during the insertion of the mating terminal, the metal spring wire is subjected to force and tilts in the direction of insertion of the mating terminal and elastically abuts against the surface of the mating terminal.

[0011] Optionally, the cross-section of the elastic conductive element is circular or elliptical.

[0012] Optionally, for each of the elastic arms, the starting and ending ends of the metal spring wire wound around it are fixed in a groove on the outer side of the elastic arm opposite to that of the other elastic arm.

[0013] Optionally, the metal spring wire is fixed in the groove by an interference fit.

[0014] Optionally, the metal spring wire is fixed to the groove by spot welding.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention utilizes an elastic conductive element wound around the elastic arm of the terminal body, resulting in a simple, robust, and reliable structure. The axial side of the elastic conductive element forms a contact area with the surface of the mating terminal. Compared to traditional spring terminals, which only use the waist of the spring to arch and make only one loop to make conductive contact with the mating terminal, this invention improves the contact area and reliability while reducing contact resistance.

[0017] 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

[0018] 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.

[0019] Figure 1 This is a three-dimensional structural diagram of the terminal assembly and the mating terminal of this utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of the terminal assembly of this utility model.

[0021] The diagram is marked as follows:

[0022] 10. Terminal body; 11. Elastic arm; 12. Clamping space; 111. Groove; 112. First surface; 113. Second surface; 20. Metal spring wire; 30. Interlocking terminal; 21. Starting end; 22. Ending end; a. Pitch. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] According to the first aspect of this utility model, as Figures 1-2 As shown, a terminal assembly for insertion into a mating terminal 30 includes: a terminal body 10, one end of which is a mating end, the mating end including two opposing elastic arms 11, a clamping space 12 formed between a first surface 112 and a second surface 113 of the two elastic arms 11; elastic contact portions respectively disposed on the elastic arms 11, each elastic contact portion including at least one elastic conductive element wound around the elastic arm, a portion of the elastic contact portion located on the first surface 112 and the second surface 113 protruding from the first surface 112 and the second surface 113, and having an elastic deformation amount toward the first surface 112 and the second surface 113; when the mating terminal 30 is inserted into the clamping space 12, the elastic conductive element is deformed by the compression of the mating terminal 30, such that the axial side of the elastic conductive element forms a contact area with the surface of the mating terminal 30.

[0028] With the rapid development of new energy vehicles, the demand for high-voltage connectors is also increasing. One of the main functions of connectors in a vehicle is to transmit electrical energy. The transmission effect is mainly achieved by the terminal contacts. Current spring terminals have the following disadvantages: First, the circular opening is closed, and after the spring is inserted into the plug terminal, it must be covered with a special cover to prevent it from falling out, which complicates the assembly process. Second, after assembly, the spring and the mating terminal 30 are prone to loosening, resulting in excessive temperature rise during power transmission, thus affecting the power transmission effect. Third, the contacts are only made by the arched part of the spring waist, resulting in fewer contacts, which increases power loss and excessive temperature rise during power transmission.

[0029] This invention utilizes an elastic conductive element wound around the elastic arm 11 of the terminal body 10, resulting in a simple, robust, and reliable structure. The axial side of the elastic conductive element forms a contact area with the surface of the mating terminal 30. Compared to the traditional spring terminal, which only uses the waist of the spring to arch and make only one round of conductive contact with the mating terminal 30, this invention improves the contact area and reliability while reducing contact resistance.

[0030] In some embodiments, the elastic conductive element is a metal spring wire 20.

[0031] The metal spring wire 20 has high corrosion resistance, high temperature resistance and conductivity, as well as excellent elastic deformation ability. Its elastic properties are characterized by reversible deformation when an external force is applied, and complete recovery to the initial state after the load is removed. It is easy to make it into an elastic conductive element and wrap it around the elastic arm 11.

[0032] In some embodiments, such as Figure 1 As shown, each of the elastic arms 11 has a groove 111 on its surface, and the metal spring wire 20 is housed in the groove 111 and at least partially protrudes from the groove 111.

[0033] The groove 111 serves to fix the metal spring wire 20, and at least part of it protrudes outside the groove 111 in order to make conductive contact with the mating terminal 30 of the insertion clamping space 12 to transmit electrical energy.

[0034] In some embodiments, such as Figure 1 As shown, there are at least two grooves 111, which are spaced apart along the length of the elastic arm 11, and the metal spring wire 20 is spirally wound in the grooves 111 of the elastic arm 11.

[0035] This design not only secures the metal spring wire 20 within the groove 111, but also enhances the conductive connection with the terminal body 10 through the metal spring wire 20 within the groove 111 spaced along the length of the elastic arm 11.

[0036] In some embodiments, such as Figure 1 As shown, the metal spring wire 20 is spirally wound around the elastic arm 11 with a constant pitch a.

[0037] The metal spring wire 20 is spirally wound around the elastic arm 11 with equal pitch a, which can provide uniform clamping force for the mating terminal 30, ensuring a stable connection between the mating terminal 30 and the terminal body 10, thereby ensuring the stability of power transmission.

[0038] In some embodiments, such as Figure 1 As shown, during the insertion of the mating terminal 30, the metal spring wire 20 is subjected to force and tilts towards the insertion direction of the mating terminal 30 and elastically abuts against the surface of the mating terminal 30.

[0039] The metal spring wire 20 has excellent elastic deformation capability. Its elastic performance is manifested in the deformation when an external force is applied. The force is tilted towards the insertion direction of the mating terminal 30 and elastically abuts against the surface of the mating terminal 30. It also has reversible deformation. After the load is removed, it can completely return to the initial state. It can maintain good elastic deformation performance even after the mating terminal 30 is repeatedly inserted and removed. Moreover, the overall structure is stable and durable and has a long service life.

[0040] In some embodiments, such as Figure 1 As shown, the cross-section of the elastic conductive element is circular or elliptical.

[0041] The circular or elliptical cross-section of the elastic conductive element is advantageous for shaping and also facilitates the formation of a contact area between the axial side of the elastic conductive element and the surface of the mating terminal 30.

[0042] In some embodiments, such as Figure 1 As shown, for each elastic arm 11, the starting end 21 and the ending end 22 of the metal spring wire 20 wound on it are fixed in the groove 111 on the outer side of the elastic arm 11 opposite to that of the other elastic arm 11.

[0043] This design facilitates the fixation of the starting end 21 and ending end 22 of the metal spring wire 20 within the groove 111 under visible conditions during installation, resulting in simple and efficient installation and assembly.

[0044] In some embodiments, the metal spring wire 20 is fixed in the groove 111 by an interference fit.

[0045] The metal spring wire 20 is fixed in the groove 111 by interference fit, which can strengthen the fixation between the metal spring wire 20 and the groove 111, prevent the metal spring wire 20 from detaching from the groove 111 on the elastic arm 11 or falling off the elastic arm 11, thereby ensuring the stable connection between the terminal body 10 and the mating terminal 30 through the metal spring wire 20, and ensuring electrical safety and power transmission stability.

[0046] In some embodiments, the metal spring wire 20 is fixed to the groove 111 by spot welding.

[0047] The metal spring wire 20 is fixed in the groove 111 by spot welding, which can strengthen the fixation between the metal spring wire 20 and the groove 111 and prevent the metal spring wire 20 from detaching from the groove 111 on the elastic arm 11 or falling off the elastic arm 11. This ensures a stable connection between the terminal body 10 and the mating terminal 30 through the metal spring wire 20, and ensures electrical safety and stable power transmission.

[0048] In some embodiments, each of the elastic conductive elements has an arcuate contact portion facing the mating terminal 30, which is elastically deformed under force during the insertion of the mating terminal 30 until the axial side of the elastic conductive element forms a contact area with the surface of the mating terminal 30.

[0049] 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 terminal assembly for mating with a mating terminal, characterized in that, include: The terminal body has a plug-in end, which includes two elastic arms arranged opposite to each other, and a clamping space is formed between the first and second surfaces of the two elastic arms facing each other. Elastic contact portions are respectively disposed on the elastic arm. Each elastic contact portion includes at least one elastic conductive element wound around the elastic arm. A portion of the elastic contact portion located on the first surface and the second surface protrudes from the first surface and the second surface and has an elastic deformation amount toward the first surface and the second surface. When the mating terminal is inserted into the clamping space, the elastic conductive element is deformed by the pressure of the mating terminal, so that the axial side of the elastic conductive element forms a contact area with the surface of the mating terminal.

2. The terminal assembly according to claim 1, characterized in that, The elastic conductive element is a metal spring wire.

3. The terminal assembly according to claim 2, characterized in that, Each of the elastic arms has a groove on its surface, the metal spring wire is housed in the groove, and at least partially protrudes out of the groove.

4. The terminal assembly according to claim 3, characterized in that, There are at least two grooves, which are spaced apart along the length of the elastic arm, and the metal spring wire is spirally wound around the groove of the elastic arm.

5. The terminal assembly according to claim 3 or 4, characterized in that, The metal spring wire is spirally wound around the elastic arm with equal pitch.

6. The terminal assembly according to claim 2, characterized in that, During the insertion of the mating terminals, the metal spring wire is subjected to force and tilts in the direction of insertion of the mating terminals, and elastically abuts against the surface of the mating terminals.

7. The terminal assembly according to claim 1, characterized in that, The cross-section of the elastic conductive element is circular or elliptical.

8. The terminal assembly according to claim 3, characterized in that, For each of the elastic arms, the starting and ending ends of the metal spring wire wound around it are fixed in a groove on the outer side of the elastic arm opposite to that of the other elastic arm.

9. The terminal assembly according to claim 8, characterized in that, The metal spring wire is fixed in the groove by an interference fit.

10. The terminal assembly according to claim 8, characterized in that, The metal spring wire is fixed in the groove by spot welding.

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