Electric connector

Abstract

The utility model relates to the technical field of electric connectors, and discloses an electric connector, which comprises a terminal provided with a connecting end part and a fixing part; the connector shell is provided with a containing cavity and an elastic arm extending towards the interior of the containing cavity, the elastic arm and the side wall of the containing cavity form a limiting space, the terminal is located in the containing cavity, the connecting end portion is exposed out of the connector shell, and the fixing portion is limited in the limiting space through the elastic arm and the side wall of the containing cavity so that limiting of the terminal can be achieved. The connector shell is provided with a limiting hole part; the locking piece comprises a locking piece body and a crimping part protruding from the locking piece body, the locking piece is installed on the connector shell, the crimping part penetrates through the limiting hole part, and the crimping part abuts against the side, away from the fixing part, of the elastic arm so as to prevent the elastic arm from being separated from the fixing part. In addition, the locking piece locks the terminal in a manner of crimping the elastic arm, and meanwhile, the tightness degree of clearance fit between the locking piece and the terminal and between the locking piece and the interior of the connector shell is reduced, so that the locking piece is easily disassembled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric connector, specifically relates to an electric connector. BACKGROUND

[0002] The connector bears electrical connection, signal transmission and component fixation and various functions, and its reliability directly affects the performance and safety of the equipment. Therefore, the existing electric connector with TPA structure avoids the electric connector from falling off due to external factors in the use process through the locking structure formed between the TPA, the connector shell and the terminal, and has high reliability or safety. However, when facing troubleshooting, equipment replacement or cleaning and maintenance, the electric connector which is quickly and conveniently disassembled is also important to improve the work efficiency of the related work field personnel.

[0003] In the current electric connector, the locking function is realized by the clamping between the TPA structure and the terminal structure. The clamping structure makes the TPA and the terminal be gap fit, which is easy to jam when disassembled, so that the TPA is not easy to disassemble or scratch the TPA, which affects the structure of the electric connector and reduces the work efficiency of the staff.

[0004] Therefore, how to provide an electric connector with stable locking structure and convenient disassembly is a problem to be solved by the related technical field personnel. UTILITY MODEL CONTENTS

[0005] In order to solve the defects of the prior art, the utility model provides an electric connector, which realizes the effect of stable locking structure and convenient disassembly through the optimization and cooperation of the structure between the locking piece, the terminal and the connector shell.

[0006] The technical effects achieved by the utility model are realized through the following technical aspects:

[0007] An electric connector, comprising:

[0008] A terminal is provided with a connecting end and a fixed part;

[0009] A connector shell is provided with a containing cavity for placing the terminal and an elastic arm extending towards the containing cavity, the elastic arm and the side wall of the containing cavity form a limiting space, the terminal is located in the containing cavity, the connecting end is exposed outside the connector shell, the fixed part is limited in the limiting space by the elastic arm and the side wall of the containing cavity to realize the limiting of the terminal, and the connector shell is provided with a limiting hole part; and

[0010] The locking member comprises a locking member body and a press-fit portion protruding from the locking member body, the locking member is installed to the connector housing, the press-fit portion passes through the limiting hole portion, and the press-fit portion abuts against a side of the elastic arm away from the fixed portion to prevent the elastic arm from being detached from the fixed portion.

[0011] Preferably, the connector housing is provided with a mounting port and a limiting port respectively at two ends thereof, the terminal enters the accommodating cavity from the mounting port, and the connecting end portion passes through the limiting port, the fixed portion has a size greater than that of the limiting port;

[0012] The elastic arm abuts against a side of the fixed portion close to the mounting port to prevent the terminal from falling off from the mounting port.

[0013] Preferably, a direction between the mounting port and the limiting port is a first direction, the elastic arm is inclined from an inside of the connector housing towards the limiting port, and is elastically deformed relative to the connecting body in a direction perpendicular to the first direction to facilitate the fixed portion to move to the limiting space.

[0014] Preferably, an end of the elastic arm close to the fixed portion is provided with a limiting groove, the limiting groove is matched with a side wall of the accommodating cavity to limit the fixed portion of the terminal.

[0015] Preferably, the limiting hole portion is provided with an end of the limiting groove close to the elastic arm, the limiting groove is formed by a side of the elastic arm away from the limiting hole portion, and the press-fit portion passes through the limiting hole portion close to the elastic arm to prevent the limiting groove from being detached from the fixed portion.

[0016] Preferably, the limiting hole portion comprises a first through hole and a second through hole, the first through hole is communicated to the elastic arm, and the second through hole is communicated to the limiting space; the press-fit portion comprises a first press-fit block and a second press-fit block, the first press-fit block passes through the first through hole to limit the elastic arm, and the second press-fit block passes through the second through hole to limit the fixed portion.

[0017] Preferably, an end of the fixed portion close to the elastic arm is further connected with a first bent portion, the first bent portion is bent and inclined from a top of the fixed portion towards a side wall of the fixed portion, and the limiting groove is provided with a guide surface matched with the first bent portion to facilitate the terminal to be withdrawn.

[0018] Preferably, the locking member body is provided with a first connecting portion, an outer side wall of the connector housing is provided with a second connecting portion, the first connecting portion is connected with the second connecting portion in a snap-fit manner to realize the connection between the locking member and the connector housing.

[0019] Preferably, the first connecting part is a buckling hole provided in the locking piece, and the second connecting part is a protrusion protruding outward from the connector shell, and the protrusion is clamped with the buckling hole.

[0020] Preferably, the terminal further comprises a wire seat and a wire, the wire seat is provided with a wire passing hole, the terminal is further provided with a wiring part at one end away from the connecting end part, and the wire passes through the wire passing hole and is connected to the wiring part.

[0021] In summary, the utility model has at least the following advantages:

[0022] The electric connector provided by the utility model realizes the effect that the locking structure is stable and convenient to disassemble through the optimization and cooperation of the structure among the locking piece, the terminal and the connector shell. The connector shell limits the terminal in the accommodating cavity through the elastic arm and the side wall of the accommodating cavity to the fixing part of the terminal. The pressing part of the locking piece abuts against one side of the elastic arm away from the fixing part, so that the elastic arm abuts against the fixing part, the limiting capacity of the terminal is improved, and the elastic arm is prevented from separating from the fixing part to cause the wire of the terminal to retreat. The locking piece adopts the mode of pressing the elastic arm to lock the terminal, and meanwhile, the locking piece and the terminal or the locking piece and the internal gap of the connector shell are reduced in the degree of close cooperation, so that the locking piece can be easily disassembled from the inside of the connector shell. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an exploded schematic view of the electric connector of the utility model embodiment 1.

[0024] Figure 2 It is a cross-sectional view of the electric connector of the utility model embodiment 1 after assembly.

[0025] Figure 3 It is a cross-sectional view of the electric connector of the utility model embodiment 1 during assembly.

[0026] Figure 4 It is a cross-sectional view of the electric connector of the utility model embodiment 1 after assembly.

[0027] Figure 5 It is a structure schematic view of the connector shell and the locking piece of the utility model embodiment 2.

[0028] Figure 6 It is an exploded schematic view of the electric connector of the utility model embodiment 3.

[0029] Markings in the figure:

[0030] 1, connector housing; 11, accommodating cavity; 12, elastic arm; 121, limiting groove; 122, guide surface; 13, limiting hole part; 131, first through hole; 132, second through hole; 14, mounting port; 15, limiting port; 16, second connecting part; 161, protruding block;

[0031] 2, locking member; 21, locking member body; 22, crimping part; 221, first crimping block; 222, second crimping block; 23, first connecting part; 231, buckling hole

[0032] 3, terminal; 31, connecting end part; 32, fixing part; 321, first bending part; 322, second bending part; 33, wiring part;

[0033] 4, wire seat; 41, wire passing hole;

[0034] 5, wire. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings and specific embodiments. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0036] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0039] Embodiment 1:

[0040] Please refer to the accompanying drawings Figures 1 to 4 The embodiment provides an electric connector, which comprises a connector housing 1, a locking member 2 and a plurality of terminals 3. The locking member 2 cooperates with the connector housing 1 to form a locking structure, so that the terminals 3 are limited in the connector housing 1 and are prevented from being easily detached. In particular, the locking member 2 is pressed to ensure the stability of the locking structure, and at the same time, the locking member 2 and the terminals 3 or the connector housing 1 inside are reduced in the tightness of the gap cooperation, so as to facilitate the easy disassembly of the locking member 2.

[0041] Specifically, the inside of the connector housing 1 is provided with a receiving cavity 11, and the connector housing 1 is provided with an elastic arm 12 extending towards the receiving cavity 11. The terminal 3 comprises a connecting end 31 and a fixed part 32, when the terminal 3 is installed in the inside of the connector housing 1, the terminal 3 is located in the receiving cavity 11 as a whole, and the connecting end 31 is at least partially exposed outside the connector housing 1, so as to realize electrical connection with other equipment. The fixed part 32 is located in the receiving cavity 11, and the elastic arm 12 and the side wall of the receiving cavity 11 form a limiting space, and the fixed part 32 is limited in the limiting space to realize the limiting of the terminal 3.

[0042] At the same time, the connector housing 1 is provided with a limiting hole part 13, and the locking member 2 is connected to the limiting hole part 13 to realize the locking function of the electric connector, so as to prevent the terminal 3 from being easily detached from the limiting space. Specifically, the locking member 2 comprises a locking member body 21 and a pressing part 22 protruding from the locking member body 21, and the pressing part 22 is located on the side of the elastic arm 12 away from the fixed part 32 after passing through the limiting hole part 13, so as to limit the elastic arm 12. Under the limiting and pressing action of the pressing part 22, the elastic arm 12 is close to the fixed part 32, so as to prevent the terminal 3 from being detached from the limiting space due to the disengagement of the elastic arm 12 from the fixed part 32.

[0043] Compared with the clamping mode of the locking member 2 and the terminal 3, the pressing mode of the locking member 2 to the elastic arm 12 reduces the tightness of the locking member 2 and the terminal 3 or the locking member 2 and the connector housing 1 inside under the action of ensuring the limiting function of the elastic arm 12, so that the disassembly process of the locking member 2 is smooth and convenient, and it is helpful to improve the efficiency of disassembling the electric connector.

[0044] Specifically, the two ends of the connector housing 1 are respectively provided with a mounting port 14 and a limiting port 15 which are in communication with the accommodating cavity 11. The terminal 3 enters the accommodating cavity 11 from the mounting port 14 until the connecting end portion 31 of the terminal 3 passes through the limiting port 15 and the fixing portion 32 is limited in the limiting space, thereby realizing the fixation of the terminal 3. The size of the fixing portion 32 is greater than the size of the limiting port 15, so as to prevent the terminal 3 from being loosened from the limiting port 15. The elastic arm 12 is abutted against the side of the fixing portion 32 close to the mounting port 14, so as to prevent the terminal 3 from being loosened from the mounting port 14 in a non-manual manner.

[0045] Further, the direction of the line between the mounting port 14 and the limiting port 15 is the Z axis, the direction of the arrangement of the plurality of terminals 3 is the X axis, and the direction perpendicular to the X-Z plane is the Y axis, thereby establishing a rectangular coordinate system around the electrical connector. The first direction is parallel to the Z axis, the elastic arm 12 is integrally extended from the inside of the connector housing 1 along the direction of the Z axis, and the extended end is used for limiting the fixing portion 32 of the terminal 3. It should be noted that in order to ensure that the fixing portion 32 can be smoothly limited in the limiting space after the terminal 3 enters the inside of the connector housing 1, the elastic arm 12 is preferably inclined to extend from the inside of the connector housing 1 towards the direction of the limiting port 15, and the elastic arm 12 is elastically deformed in the Y axis direction. With the movement of the terminal 3 towards the direction of the limiting port 15, the elastic arm 12 is in contact with the fixing portion 32 and is close to the connector housing 1 under the action of the fixing portion 32, so as to provide a movement space for the fixing portion 32. After the terminal 3 is in place, the elastic arm 12 returns to the initial state and abuts against the fixing portion 32, thereby realizing the limiting of the terminal 3.

[0046] In order to further increase the stability of the structure between the elastic arm 12 and the terminal 3, the elastic arm 12 is provided with a limiting groove 121 at one end close to the fixing portion 32, and the fixing portion 32 is limited between the side wall of the limiting groove 121 and the side wall of the accommodating cavity 11. In this embodiment, the limiting groove 121 is formed by recessing one side of the elastic arm 12 close to the fixing portion 32, and the side wall of the limiting groove 121 abuts against the top and side wall of the fixing portion 32.

[0047] In particular, the locking member 2 acts on one end of the elastic arm 12 provided with the limiting groove 121, so as to improve the locking effect. The limiting hole portion 13 is formed on the connector housing 1 and corresponds to one end of the elastic arm 12 provided with the limiting groove 121, and the limiting hole portion 13 is relatively located above the limiting groove 121. After the crimping portion 22 of the locking member 2 passes through the limiting hole portion 13, it is close to or abuts against the elastic arm 12, so as to prevent the limiting groove 121 from being separated from the fixing portion 32.

[0048] In addition, in order to improve the convenience when disassembling the electrical connector, the fixed part 32 is connected with a first bending part 321 near the elastic arm 12, and the first bending part 321 is bent and formed obliquely from the top of the fixed part 32 to the side wall of the fixed part 32. At the same time, the limiting groove 121 is provided with a guide surface 122 which is matched with the inclined surface of the first bending part 321. When the electrical connector is disassembled manually, after the locking part 2 is disassembled, the terminal 3 moves towards the mounting port 14, the first bending part 321 and the guide surface 122 cooperate to make the elastic arm 12 move towards the connector shell 1, provide space for the movement of the fixed part 32, until the fixed part 32 is away from the elastic arm 12, and the terminal 3 is withdrawn.

[0049] In some embodiments, the fixed part 32 is also connected with a second bending part 322 on the side opposite to the first bending part 321, and the second bending part 322 is bent and formed from the top of the fixed part 32 to the side wall of the fixed part 32. During the installation of the terminal 3, the second bending part 322 is used to abut against the elastic arm 12 to promote the displacement of the elastic arm 12. The provision of the second bending part 322 helps to protect the body of the fixed part 32, increases the structural strength of the terminal 3 and facilitates the installation and disassembly of the terminal 3. In this embodiment, the first bending part 321 and the second bending part 322 are integrally formed and connected to the top of the fixed part 32.

[0050] In order to further improve the strength of the locking structure of the electrical connector and avoid the terminal 3 from being loosened from the connector shell 1 due to external vibration or other environmental factors, the locking part 2 also directly limits the fixed part 32 of the terminal 3. Specifically, the limiting hole part 13 includes a first through hole 131 and a second through hole 132, the first through hole 131 is communicated to the elastic arm 12, and the second through hole 132 is communicated to the limiting space. The crimping part 22 of the locking part 2 includes a first crimping block 221 and a second crimping block 222. When the locking part 2 is installed to the connector shell 1, the first crimping block 221 passes through the first through hole 131 to limit the elastic arm 12, and the second crimping block 222 passes through the second through hole 132 to limit the fixed part 32. The locking part 2 limits the movement of the elastic arm 12 through the first crimping block 221 to avoid loosening of the terminal 3, and the second crimping block 222 directly limits the position of the fixed part 32 to further avoid loosening of the terminal 3, thereby improving the stability of the structure of the electrical connector.

[0051] Embodiment 2:

[0052] The difference between this embodiment and embodiment 1 is that this embodiment further describes the structure of the electrical connector, and the same parts are described in embodiment 1. The electrical connector is described as follows. Figure 5 The electrical connector is described as follows.

[0053] The locking member body 21 is provided with a first connecting portion 23, and the outer side of the connector housing 1 is provided with a second connecting portion 16, the first connecting portion 23 and the second connecting portion 16 are buckled and connected to realize the fixed connection between the locking member 2 and the connector housing 1. In this embodiment, the first connecting portion 23 is a buckling hole 231 opened in the locking member 2, and the second connecting portion 16 is a protruding block 161 protruding on the outer side of the connector housing 1, the protruding block 161 is clamped with the buckling hole 231, and the pressing portion 22 provided on the locking member body 21 is inserted into the limiting hole portion 13, so that the locking member 2 and the connector housing 1 are fixed while limiting the elastic arm 12, and the locking strength is improved.

[0054] Embodiment 3:

[0055] This embodiment is based on the above-mentioned embodiments, and further perfects and optimizes the structure of the electric connector.

[0056] Please refer to Figure 6 The electric connector further comprises a wire seat 4 and a wire 5, the wire seat 4 is provided with a wire passing hole 41, the terminal 3 is provided with a wiring portion 33 at one end away from the connecting end portion 31, and the wire 5 passes through the wire passing hole 41 and is connected to the wiring portion 33, so as to realize the electrical conduction subsequently. Wherein, the wire seat 4 is installed to the mounting port 14 of the connector housing 1.

[0057] It should be noted that a plurality of limiting ports 15 are provided in one electric connector, and a plurality of terminals 3 can be installed correspondingly, and a plurality of wire passing holes 41 are provided correspondingly at the wire seat 4.

[0058] The above is only an example and description of the structure of the utility model, which is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, and these obvious replacement forms belong to the protection scope of the utility model.

Claims

1. An electrical connector, characterized by, The application relates to a terminal, a connector shell and a locking member. The terminal is provided with a connecting end and a fixing part. The connector shell is provided with a receiving cavity for placing the terminal and an elastic arm extending into the receiving cavity. The elastic arm and the side wall of the receiving cavity form a limiting space. The terminal is located in the receiving cavity.

2. The electrical connector of claim 1, wherein, The connecting end is exposed outside the connector shell. The fixing part is limited in the limiting space by the elastic arm and the side wall of the receiving cavity to limit the terminal.

3. The electrical connector of claim 2, wherein, The connector shell is provided with a limiting hole.

4. The electrical connector of claim 2, wherein, The locking member is installed on the connector shell.

5. The electrical connector of claim 4, wherein, The locking member is provided with a locking member body and a press-fit part protruding from the locking member body.

6. The electrical connector of claim 1, wherein, The press-fit part passes through the limiting hole and abuts against one side of the elastic arm away from the fixing part to prevent the elastic arm from being separated from the fixing part.

7. The electrical connector of claim 4, wherein, The connector shell is provided with a mounting port and a limiting port at two ends respectively.

8. The electrical connector of claim 1, wherein, The terminal enters the receiving cavity from the mounting port until the connecting end passes through the limiting port.

9. The electrical connector of claim 8, wherein, The size of the fixing part is larger than that of the limiting port. The elastic arm abuts against one side of the fixing part close to the mounting port to prevent the terminal from falling off from the mounting port. The direction between the mounting port and the limiting port is a first direction. The elastic arm is inclined from the inside of the connector shell towards the limiting port. The fixing part moves to the limiting space by elastic deformation in a direction perpendicular to the first direction. The elastic arm is provided with a limiting groove at one end close to the fixing part. The limiting groove cooperates with the side wall of the receiving cavity to limit the fixing part of the terminal. The limiting hole is provided with one end of the limiting groove close to the elastic arm. The limiting groove is formed by one side of the elastic arm away from the limiting hole. The press-fit part passes through the limiting hole close to the elastic arm to prevent the limiting groove from being separated from the fixing part. The limiting hole comprises a first through hole and a second through hole. The first through hole is connected to the elastic arm. The second through hole is connected to the limiting space. The press-fit part comprises a first press-fit block and a second press-fit block. The first press-fit block passes through the first through hole to limit the elastic arm. The second press-fit block passes through the second through hole to limit the fixing part. The fixing part is further connected with a first bending part at one side close to the elastic arm. The first bending part is bent and inclined from the top of the fixing part towards the side wall of the fixing part. The limiting groove is provided with a guide surface matched with the first bending part to facilitate the terminal to be withdrawn. The locking member body is provided with a first connecting part. The outside wall of the connector shell is provided with a second connecting part. The first connecting part and the second connecting part are connected by snap-fit to connect the locking member with the connector shell. The first connecting part is a snap-fit hole of the locking member. The second connecting part is a protruding block of the outside wall of the connector shell. The block is clamped with the snap-fit hole.

10. The electrical connector of claim 1, wherein, The terminal further comprises a wire seat provided with a wire passing hole, and a wire connected to the wire seat.

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