Terminal fixing structure of low-voltage connector and low-voltage connector

Abstract

The utility model discloses a terminal fixing structure of a low-voltage connector and the low-voltage connector, and relates to the technical field of low-voltage connectors, and the terminal fixing structure comprises a plurality of terminals, a plurality of TPAs, and a housing. Two sides of the terminal are respectively provided with an elastic sheet, the inner wall of the shell is provided with a plurality of grooves, and the terminal is inserted from one end of the shell and is reversely buckled in the corresponding groove; two elastic arms are arranged on the same side of the TPA, and bosses are arranged on the opposite sides of the two elastic arms respectively. An assembling opening is formed in the side wall of the shell, second assembling grooves are formed in the corresponding positions of the upper portion and the lower portion of the shell, the TPA is inserted into the assembling opening and reversely buckled in the second assembling grooves through bosses, and the elastic arms penetrate through the receding grooves of the terminals. According to the scheme, through the structural cooperation of the TPA and the shell, the terminal can be reinforced, and the terminal is prevented from retreating; in addition, according to the scheme, secondary protection is carried out on the TPA, and after the plug is matched with the socket, the inner wall of the socket can press the TPA so as to protect the TPA from falling off in a vibration or severe environment.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage connectors, in particular to a terminal fixing structure of a low-voltage connector and a low-voltage connector. Background Art

[0002] A low-voltage connector is a connection device installed on a car or device, which provides low-voltage and high-current connection transmission for the car or device. As a component for connecting or separating transmission line electrical appliances, it is widely used in today's new energy vehicles. Today's low-voltage connector terminals are generally fixed by buckling the terminal's own spring arm on the plastic shell, or adding a TPA (Terminal position assurance, called a pin or terminal locking piece) to fix the terminal on the basis of the spring arm buckle, but there is no special protection for the fixation of TPA. During the driving of the car, TPA is likely to fall off due to vibration, resulting in failure of the fixation of the terminal; TPA will also shrink due to harsh environment, causing TPA to fall off. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a terminal fixing structure of a low-voltage connector and a low-voltage connector. The TPA can stably assemble the terminal in the housing and also protect the TPA to prevent it from falling off.

[0004] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0005] A terminal fixing structure of a low-voltage connector comprises a plurality of terminals, a plurality of TPAs ​​and a shell.

[0006] A spring is provided on each side of the terminal, and a plurality of grooves are provided on the inner wall of the housing. The terminal is inserted from one end of the housing and buckled into the corresponding groove;

[0007] Two elastic arms are arranged on the same side of the TPA, and a boss is arranged on each side of the two elastic arms facing away from each other;

[0008] The side wall of the shell is provided with an assembly opening, and the upper and lower corresponding positions of the shell are provided with second assembly grooves. The TPA is inserted into the assembly opening and buckled in the second assembly groove through the boss, and the elastic arm passes through the avoidance groove of the terminal.

[0009] Furthermore, first assembly grooves are provided at corresponding upper and lower positions of the shell. When the TPA is inserted into the assembly opening, the boss is first buckled in the first assembly groove.

[0010] Furthermore, a notch is provided on the side of the TPA facing the shell for prying open the TPA.

[0011] A low voltage connector comprises a plug and a socket. The plug comprises a terminal fixing structure of the low voltage connector. The inner wall of the socket has a first surface. The side of the TPA facing away from the elastic arm has a second surface. When the plug and the socket are mated, the first surface is used to press the second surface.

[0012] The beneficial effects of the utility model are: TPA has a simple structure and is easy to install. Through the structural cooperation between TPA and the shell, the terminals can be reinforced to prevent the terminals from retreating. TPA is also provided with secondary protection. After the plug and the socket are mated with each other, the inner wall of the socket can press down on the TPA to protect the TPA from falling off in vibration or harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 An exploded view of the low voltage connector structure is shown;

[0014] Figure 2 A TPA structural diagram is shown;

[0015] Figure 3 The terminal structure diagram is shown;

[0016] Figure 4 Shows a bottom structural diagram of the housing;

[0017] Figure 5 A horizontal cross-sectional view of the housing is shown;

[0018] Figure 6 A longitudinal cross-sectional view of the terminal fixing structure at TPA is shown;

[0019] Figure 7 A horizontal cross-section of a low voltage connector is shown;

[0020] Figure 8 The overall structure diagram of the low voltage connector is shown. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figure 1 As shown, this embodiment provides a terminal fixing structure of a low voltage connector, including two terminals 102 , two TPAs ​​101 and a housing 103 .

[0023] like Figure 3 , Figure 5 , Figure 7 As shown, a spring 1021 is provided on both sides of each terminal 102. Figure 5 As shown, the housing 103 is provided with two channels, and a groove 1035 is provided at the position of the inner wall of each channel corresponding to the spring piece 1021. The terminal 102 is inserted into the channel from one end of the housing 103 and buckled into the corresponding groove 1035 to achieve the stop function.

[0024] like Figure 2 As shown, two elastic arms 1012 are disposed on the same side of the TPA 101 , and a boss 1013 is disposed on each of the opposite sides of the two elastic arms 1012 .

[0025] like Figure 4 , Figure 6 As shown, both left and right side walls of the shell 103 are provided with assembly openings 1034, and the assembly openings 1034 are connected with the corresponding channels. The upper and lower corresponding positions of each channel of the shell 103 are provided with second assembly grooves 1032, and the upper and lower corresponding positions of each channel are also provided with first assembly grooves 1031, and the first assembly groove 1031 is closer to the assembly opening 1034 than the second assembly groove 1032. The TPA 101 is inserted into the assembly opening 1034 and buckled in the second assembly groove 1032 through the boss 1013, and the elastic arm 1012 passes through the avoidance groove of the terminal 102 to prevent the terminal 102 from retreating.

[0026] The specific method of use is as follows: insert the terminal 102 into the housing 103; then insert the TPA 101 into the assembly port 1034, the boss 1013 first enters the first assembly groove 1031, the elastic arm 1012 returns to its position, and the boss 1013 is just buckled in the first assembly groove 1031. After completing the first lock of the TPA 101, the staff can observe whether the terminal 102 is assembled in place. If the terminal 102 is assembled in place, continue to push the TPA 101, so that the boss 1013 can be smoothly buckled into the second assembly groove 1032, thereby completing the assembly task of the TPA 101; if the terminal 102 is not assembled in place, the TPA 101 cannot be pushed into the second assembly groove 1032. On the one hand, the TPA 101 can check whether the terminal 102 is assembled in place, and on the other hand, after the TPA 101 is assembled in place, it can also prevent the terminal 102 from retreating.

[0027] More specifically, a notch 1014 is provided on the side of the TPA 101 facing the elastic arm 1012. When the TPA 101 is installed in the housing 103, the notch 1014 faces the housing 103, which does not affect the aesthetics of the product. When the terminal 102 needs to be removed, the staff can insert a sharp tool into the notch 1014 to pry open the TPA 101.

[0028] Example 2

[0029] like Figure 1 , Figure 8As shown, this embodiment provides a low-voltage connector, including a plug 100 and a socket 200. The plug 100 includes the terminal fixing structure of the low-voltage connector in Example 1. A first surface 201 is provided at a position of the inner wall of the socket 200 corresponding to the TPA 101, and a second surface 1011 is provided on the side of the TPA 101 away from the elastic arm 1012. When the plug 100 and the socket 200 are mated with each other, the first surface 201 can be pressed on the second surface 1011, and the TPA 101 will not fall off even in the case of vibration or harsh environment.

[0030] The above embodiments are only used to illustrate the technical ideas and features of the utility model, and are not intended to be the only or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A terminal fixing structure of a low voltage connector, characterized in that: It includes a plurality of terminals (102), a plurality of TPAs ​​(101), and a housing (103); A spring sheet (1021) is provided on each side of the terminal (102); a plurality of grooves (1035) are provided on the inner wall of the housing (103); the terminal (102) is inserted from one end of the housing (103) and buckled into the corresponding groove (1035); Two elastic arms (1012) are arranged on the same side of the TPA (101), and a boss (1013) is respectively arranged on opposite sides of the two elastic arms (1012); The side wall of the housing (103) is provided with an assembly opening (1034), and the housing (103) is provided with a second assembly groove (1032) at corresponding upper and lower positions. The TPA (101) is inserted into the assembly opening (1034) and buckled in the second assembly groove (1032) through the boss (1013), and the elastic arm (1012) passes through the avoidance groove of the terminal (102).

2. The terminal fixing structure of the low voltage connector according to claim 1, characterized in that: The housing (103) is also provided with first assembly grooves (1031) at corresponding upper and lower positions. When the TPA (101) is inserted into the assembly opening (1034), the boss (1013) is first buckled in the first assembly groove (1031).

3. The terminal fixing structure of the low voltage connector according to claim 1, characterized in that: A notch (1014) is provided on a side of the TPA (101) facing the housing (103) for prying open the TPA (101).

4. A low voltage connector, characterized in that: The invention comprises a plug (100) and a socket (200), wherein the plug (100) comprises the terminal fixing structure of the low-voltage connector according to any one of claims 1 to 3, the inner wall of the socket (200) comprises a first surface (201), and the side of the TPA (101) facing away from the elastic arm (1012) comprises a second surface (1011), and when the plug (100) and the socket (200) are mated with each other, the first surface (201) is used to press the second surface (1011).

Images