TW201539875A - Electrical connector - Google Patents

Abstract

The invention provides an electrical connector, which includes a body, an end cap, and at least a terminal. When the end cap aligns and covers the body, a first buckle of the end cap clasps in a first clasp slot of the body so that a tenon of an inner hook of each terminal slot in the body and a blocking tenon of an extending sheet of the end cap would form a first positioning state in an abutting manner; when each terminal is inserted into the terminal slot of the body, the terminal contacts a buckle bottom surface of the inner hook so that the inner hook is radially deformed until the buckle is fastened in the slot of the terminal, and the tenon of the inner hook and a receiving slot of the extending sheet forms a non-insertion alignment state; finally a second buckle of the end cap clasps in a second clasp slot of the body so that the tenon is inserted into the receiving slot for enabling the end cap to be in a second positioning state relative to the body.

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having a Terminal Position Assurance (TPA) function.

According to electrical connectors, there are many advantages in electrical products. Their main use is in the transmission of power supplies or signals. Therefore, electrical connectors have been widely used for the connection of information products and are indispensable components.

In practical applications, the use of electrical connectors is not only in the aforementioned electrical products, but also widely used in the circuit systems of steam and locomotives as a connection of lines. In order to ensure that the contact terminals in the electrical connector can be stably positioned and locked, the conventional electrical connector is composed of a body and a cover. The body has a plurality of terminal slots, and the terminals are embedded in the terminal slots. In order for a plurality of pins of a complementary electrical connector to be stably inserted into corresponding terminals of the electrical connector, the terminals must be in a positioned and locked state. Therefore, the cover body of the body, that is, the conventional terminal positioning support device is indispensable for the electrical connector.

The terminal positioning securing device is a secondary positioning device as a terminal, and its main functions are: 1. increasing the holding force of the terminal; and 2, confirming whether the terminal is assembled in position. Therefore, the conventional terminal positioning support device usually has a two-stage locking function, wherein the first positioning type is a state of assembly and shipment of the manufacturer, and the purpose is to facilitate the use of the terminal assembly factory to prevent leakage or less loading. The terminal is positioned to secure the device, and the second positioning type is a functional segment, mainly for positioning the terminal.

However, the common disadvantage of the above-mentioned terminal positioning guarantee device is that in order to ensure the convenience of assembling the terminal during the first and second positioning type conversion, it is common practice to form a small insertion force when the terminal is inserted and positioned. It is easy to cause the terminal positioning support device to collide with each other during the transportation process, so that after the terminal positioning support device is stressed, the first positioning type in the body is easily caught in the second positioning type, so that the terminal assembly factory cannot The assembly of the terminals is carried out and needs to be improved.

The purpose of the present invention and the gain of the present invention is to provide an electrical connector. When the body and the end cover are sleeved to form a first positioning type, the hook of the body forms an interference fit with the extension piece of the end cover to ensure an In the state in which the terminal is not inserted, the second positioning type cannot be formed; further, the inner hook and the terminal are designed to have an interference fit, and the interference fit will cause the inner hook to be deformed, so that the inner hook and the inner hook The end cap is formed with a clearance fit by an interference fit to facilitate assembly of the terminal into the positioned and locked state, and the end cap can form a second positioning pattern with the body.

In order to achieve the foregoing objectives, the technical means adopted in the present invention is to provide an electrical connector, comprising: a body, the at least one terminal slot is axially opened, and each of the terminal slots protrudes axially and elastically oscillates. a leg-shaped hook, wherein the inner hook protrudes axially forwardly from a protrusion and a hook portion, and the front portion of the at least one terminal slot in front of the body is provided with a joint portion, and the outer wall of the joint portion A first and a second buckle slot are respectively disposed; an end cover is formed with a slot for the corresponding terminal slot, and an extension piece is disposed in the rear end of the end cover corresponding to each of the terminal slots, wherein the free end of the extension piece is radially adjacent a damper and a accommodating groove are provided, and the inner wall of the two ends of the end cover respectively have a fastening portion including a first hook and a second hook; and at least a terminal is inserted into each of the terminal slots, a card slot is formed in each terminal surface, and a wire is connected; when the engaging portion of the end cap is nested with the engaging portion of the body, the first hook is The first positioning type is formed in the first buckle groove, and the protrusions in the terminal slots form an abutting shape with the damper; when the terminals are inserted by the terminal slots of the body, the bottom surface of the hook portion is touched. And causing the inner hook to be radially deformed upward until the hook is fastened in the slot, and the tongue and the receiving groove form an unplugged alignment type; The two hooks are inserted into the second buckle groove of the body, and the tenon is inserted into the receiving groove to form the second positioning type with respect to the body.

1‧‧‧ Ontology

11‧‧‧Terminal slot

12‧‧‧Inner hook

121‧‧‧榫

122‧‧‧ hook

123‧‧‧Bevel

13‧‧‧ joints

131, 132‧‧‧first and second buckle slots

14‧‧‧ Plug interface

15‧‧‧ sealing ring

2‧‧‧End cover

21‧‧‧through slot

22‧‧‧Extension

221‧‧‧ 榫

222‧‧‧ accommodating slots

23‧‧‧Deduction Department

231, 232‧‧‧ first and second hooks

3‧‧‧ terminals

31‧‧‧ card slot

32‧‧‧Wire

1 and FIG. 2 are perspective exploded views of two different viewing angles of the electrical connector of the present invention; FIG. 3 and FIG. 4 are a perspective view and a transverse cross-sectional view of the electrical connector of the present invention in a first positioning mode; FIG. 5 and FIG. A perspective view and a transverse cross-sectional view of the second connector in the second positioning mode after the electrical connector is assembled; and FIG. 7 to FIG. 8 are longitudinal profiles of the first positioning type, the insertion terminal, and the second positioning type after the electrical connector is assembled Figure.

As shown in FIG. 1 to FIG. 9 , basically, the electrical connector of the present invention comprises a body 1 , an end cover 2 , and at least one terminal 3 .

The body 1 is injection molded from an insulating material such as plastic. The body 1 defines at least one terminal slot 11 in the axial direction. As shown in FIG. 2, the number of the terminal slots 11 is two and axially parallel. Referring to FIG. 7, each of the terminal slots 11 is axially extended with a spring-like swingable inner-shaped inner card. The hook 12 has a protrusion 121 and a hook portion 122 extending axially forwardly and downwardly of the inner hook 12, and a lower surface of the hook portion 122 forms a slope 123.

Furthermore, as shown in FIG. 1 , FIG. 3 and FIG. 4 , a front portion of the two terminal slots 11 in front of the main body 1 is provided with a joint portion 13 for the end cover 2 to be attached to the main body 1 . A plug-in interface 14 is provided for the complementary electrical connector to interface. The first and second buckle grooves 131 and 132 are respectively disposed on the left and right outer walls of the joint portion 13 so that the end cover 2 is respectively formed with the first positioning type at the factory and the factory. The terminal 3 is assembled to the second positioning type after positioning.

In particular, as shown in FIG. 1, FIG. 2, FIG. 4 and FIG. 6, the body 1 further includes a sealing ring 15 which is sleeved behind the joint portion 13 inside the insertion port 14. When the plug connector 14 of the body 1 is inserted into the complementary electrical connector, the two electrical connectors can be sealed.

The end cap 2 is also injection molded from an insulating material such as plastic. The end cover 2 has a terminal positioning support function, and a corresponding slot 21 is formed in the corresponding terminal slot 11 so that at least one latch of the complementary electrical connector is disposed after the conventional complementary electrical connector is sleeved on the socket 14 of the body 1. (not shown) is inserted through the through slot 21 and inserted into the terminal 3 corresponding to the electrical connector to form an electrical connection. The end cover 2 is provided with an extending piece 22 corresponding to the rear end of each of the terminal slots 11. The free ends of the extending pieces 22 are radially adjacent to a dam 221 and a receiving groove 222 (shown in FIG. 7). In addition, the first and second buckles 231 and 232 of the fastening portion 23 are respectively disposed at the positions of the first and second fastening grooves 131 and 132 of the joint portion 13 of the left and right inner wall of the end cover 2 (shown in FIG. 4 ). The first hook 231 protrudes from the rear end of the inner wall of the right end of the end cover 2, and the second hook 232 protrudes from the front end of the left inner wall of the end cover 2, so that the first and second hooks Both 231 and 232 have a distance difference.

The terminal 3 is inserted into each of the terminal slots 11, and a slot 31 for fastening the hook portion 122 is formed on the surface of each terminal 3. The terminal 3 is further connected to a wire 32 which is passed through the rear of each terminal slot 13.

Referring to FIG. 1 to FIG. 4 and FIG. 7 , in the manufacturing factory, after the main body 1 and the end cover 2 are respectively manufactured, when the assembly is to be assembled, the sealing ring 15 is firstly sleeved on the joint portion 13 inside the insertion interface 14 . Then, the engaging portion 23 of the end cover 2 is inserted into the engaging portion 13 of the body 1 to be inserted into the first buckle groove 131 (shown in FIG. 4), so that the end The cover 2 is not axially disengaged from the body 1 , and the dam 221 of the extending piece 22 in each of the terminal slots 11 forms an interference fit with the tenon 121 of the inner hook 12, and exhibits an abutting shape. A positioning type is ensured that the second positioning type cannot be formed after the terminal 3 is not inserted.

Referring to FIG. 8, in the terminal assembly factory, each terminal 3 is inserted by the terminal slot 11 at the rear of the body 1. Since the inner hook 12 and the terminal 3 are designed to have an interference fit, each terminal 3 penetrates into the terminal slot. The inner surface of the hook portion 122 is inclined to be radially deformed, so that the inner hook 12 and the extending piece 22 are gap-fitted by the interference fit, that is, the tenon 121. Forming an unplugged alignment with the receiving slot 222, and the hook portion 122 of the inner hook 12 is fastened to the slot 31 of the terminal 3, so that the terminal 3 is assembled into the terminal slot 11 to form Positioning and locking status.

Referring to FIG. 5 , FIG. 6 and FIG. 9 , the end cover 2 is finally inserted into the joint portion 13 of the body 1 , and the second hook 232 is buckled into the second buckle groove 132 (shown in FIG. 6 ). And the accommodating groove 222 is displaced toward the yoke 121 until the yoke 121 is inserted into the accommodating groove 222, and the opening of the terminal 3 is adjacent to the through slot 21 of the end cover 12, so that the end cover 2 is opposite to the end cover 2 The body 1 forms a second positioning pattern.

Therefore, when the electrical connector is assembled, the terminal 3 inside the body 1 is brought into a positioning and locking state. Therefore, the complementary electrical connector can be easily inserted into the plug connector 14, and the complementary electrical connector is electrically connected to the electrical connector of the present invention.

The disclosure of the present invention is a preferred embodiment. Any change or modification of the present invention originating from the technical idea of the present invention and being easily inferred by those skilled in the art will not deviate from the scope of patent rights of the present invention.

1‧‧‧ Ontology

11‧‧‧Terminal slot

12‧‧‧Inner hook

121‧‧‧榫

122‧‧‧ hook

123‧‧‧Bevel

14‧‧‧ Plug interface

15‧‧‧ sealing ring

2‧‧‧End cover

21‧‧‧through slot

22‧‧‧Extension

221‧‧‧ 榫

222‧‧‧ accommodating slots

Claims (5)

An electrical connector includes: a body having at least one terminal slot axially extending therein, and each of the terminal slots axially projecting an elastically radially oscillating step-like inner hook, wherein the inner hook is up and down a front portion of the front portion of the front portion of the body is provided with a joint portion, and the outer wall of the joint portion is respectively provided with a first and second buckle groove; A corresponding slot is formed in the corresponding terminal slot, and an extending piece is disposed in the rear end of the end cover corresponding to each of the terminal slots. The free end of the extending piece is radially adjacent to a dam and a receiving slot, and the end cover is The inner wall of each of the two sides is respectively provided with a fastening portion including a first and a second fastening hook; and at least one terminal is inserted into each terminal slot, and a surface of each terminal is opened. The card slot is connected to a wire; when the engaging portion of the end cap is fitted into the engaging portion of the body, the first hook is buckled into the first buckle groove, and the tenons in each terminal slot are The damper forms a first positioning pattern of abutting shape; when each terminal is connected by the terminal of the body When the insertion is made, the bottom surface of the hook portion is touched, and the inner hook is deformed radially upward until the hook portion is fastened into the card slot, and the protruding portion and the receiving groove form an unplugged alignment type. Finally, the second hook of the end cover is buckled into the second buckle groove of the body, and the tenon is inserted into the receiving groove to form the second positioning type with respect to the body. The electrical connector of claim 1, wherein the number of the terminal slots is two and the axial directions are parallel. The electrical connector of claim 1, wherein the lower edge of the hook portion of the inner hook is formed a slope. The electrical connector of claim 1, wherein the first hook of the fastening portion protrudes from the rear end of the right inner wall of the end cover, and the second hook protrudes from the left side of the end cover. The front end of the wall is such that the first and second clasps have a distance difference. The electrical connector of claim 1, wherein the body further comprises a sealing ring sleeved behind the joint portion inside the plug connector.