Pluggable electric connector
By designing a pluggable electrical connector with flexible arms and contact arms, the cost and size problems caused by increasing the number of terminals in the existing technology are solved, achieving efficient electrical connection for more wire harnesses, simplifying the structure and reducing material costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN JINLING ELECTRONICS CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-21
AI Technical Summary
Existing pluggable electrical connectors, while meeting the needs of more wire harness connections, increase the number of terminals, leading to higher material and manufacturing costs. The connector structure becomes more complex and the physical size increases, making it difficult to install and use in limited spaces.
Design a pluggable electrical connector that uses a terminal assembly inside the housing, including a spring and a terminal. The spring has a base and first and second elastic arms, and the terminal has first and second contact arms. The separation of the elastic arms and contact arms forms a space, which, together with a through hole and a button, enables the plugging and clamping of the wire harness.
With the same number of terminals, each terminal assembly can be plugged into and unplugged with two wire harnesses, increasing the number of wire harness connections, reducing material costs, simplifying the structure, and reducing connector size.
Smart Images
Figure CN224153614U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical connector technology, and in particular to a pluggable electrical connector. Background Technology
[0002] An electrical connector is an electronic component used to achieve electrical connections. It is used in various electrical equipment to facilitate wiring. Its function is to act as a bridge between blocked circuits or independent circuits, and to undertake the task of transmitting current or signals; or it can be used with electrical terminals to form board-to-wire connections; or it can be used independently for board-to-board connections.
[0003] In existing technologies, pluggable electrical connectors are typically designed with a set of terminal assemblies corresponding to a set of wire harnesses. This design limits the number of wire harness connections. To meet the need for more wire harness connections, the traditional approach is to increase the number of terminals. Increasing the number of terminals means requiring more materials and increasing manufacturing costs. Increasing the number of terminals can also lead to greater connector structure complexity, further driving up manufacturing costs. As the number of terminals increases, the physical size of the connector also increases accordingly, which is detrimental to installation and use within limited spaces. Utility Model Content
[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a pluggable electrical connector.
[0005] To solve the above-mentioned technical problems, the present invention provides a pluggable electrical connector, including a housing and a terminal assembly disposed within the housing. The terminal assembly includes a spring and a terminal. The spring has a base located within the housing and a first elastic arm and a second elastic arm connected to the base. The terminal has a first contact arm and a second contact arm that elastically abut against the first elastic arm and the second elastic arm, respectively. The first elastic arm and the second elastic arm can be separated from the first contact arm and the second contact arm, respectively, under the action of external force to form a first space and a second space, respectively. The housing is provided with a first through hole and a second through hole that communicate with the first space and the second space, respectively, and the first through hole and the second through hole are used for corresponding wire harnesses to enter / exit the first space and the second space, respectively.
[0006] Furthermore, the spring and terminal are distributed along the insertion direction of the wire harness; the first through hole and the second through hole are respectively located on the side of the first elastic arm and the second elastic arm away from the terminal; when the wire harness is inserted into the first through hole or the second through hole and squeezes the corresponding first elastic arm or the second elastic arm, the corresponding first elastic arm or the second elastic arm is separated from the corresponding first contact arm or the second contact arm by the squeezing force, so that the wire harness is inserted into the corresponding first space or the second space; when the wire harness remains stationary in the corresponding first space or the second space, the corresponding first elastic arm or the second elastic arm holds the wire harness in the corresponding first space or the second space.
[0007] Furthermore, the first contact arm and the second contact arm are distributed along the insertion direction of the wire harness at the end of the first elastic arm away from the base, and the second contact arm is distributed along the insertion direction of the wire harness at the end of the second elastic arm away from the base; both ends of the first elastic arm and the second elastic arm that are far apart from each other can abut against the opposite side of the first contact arm and the second contact arm.
[0008] Furthermore, it also includes a first button and a second button configured in pairs with the first elastic arm and the second elastic arm. A first through hole parallel to the first through hole is provided on the housing, and a second through hole parallel to the second through hole is provided on the housing. The first button and the second button are respectively inserted into the first through hole and the second through hole and can push the first elastic arm and the second elastic arm inward respectively, so that the first elastic arm and the second elastic arm are separated from the first contact arm and the second contact arm respectively.
[0009] The first button and the second button are respectively unidirectionally confined outward in the first through hole and the second through hole to prevent the first button and the second button from detaching from the first through hole and the second through hole, respectively.
[0010] Furthermore, the first elastic arm is formed with a first recessed portion in the direction of the terminal by bending process at the position corresponding to the first button, and the second elastic arm is formed with a second recessed portion in the direction of the terminal by bending process at the position corresponding to the second button.
[0011] The first elastic arm and the second elastic arm each have a first extension segment extending inward from the base and inclined toward the corresponding first contact arm or second contact arm, a second extension segment extending outward from the first extension segment and inclined toward the corresponding first contact arm or second contact arm, and an elastic abutting end extending inward from the second extension segment and toward the corresponding first contact arm or second contact arm. The two elastic abutting ends abut against one side of the first contact arm and the second contact arm, respectively. A corresponding first recess or second recess is formed between the second extension segment and the first extension segment. The inner ends of the first button and the second button are located in the first recess and the second recess, respectively.
[0012] Furthermore, the terminal also has a main body, and the first contact arm and the second contact arm are respectively disposed on the main body on two sides corresponding to the first elastic arm and the second elastic arm.
[0013] Furthermore, the base is held and limited by the terminal on the inner wall of the housing on the side away from the terminal;
[0014] The base is configured as a U-shaped structure with the opening facing the terminal; the terminal has a pressing part adapted to the inner space of the U-shaped base, the pressing part is disposed on the main body at a position corresponding to the inner space, and the pressing part holds and limits the base against the inner wall of the housing on the side away from the terminal.
[0015] Furthermore, a plug-in portion is provided on the side of the main body away from the base, and a plug-in cavity for accommodating the plug-in portion is provided on the housing at a position corresponding to the plug-in portion, and the plug-in cavity extends outward through the housing to form a plug-in hole.
[0016] Furthermore, the insertion part includes a first elastic clamping arm and a second elastic clamping arm disposed opposite to each other, and a clamping space is formed between the first elastic clamping arm and the second elastic clamping arm; a guide arm is provided in the insertion cavity and inserted into the clamping space along the axial direction of the insertion part, and the projection surface of the guide arm projected in the axial direction of the insertion cavity is located outside the insertion hole.
[0017] The inner diameter of the insertion cavity is larger than the diameter of the insertion hole, so that the cavity wall on the side of the insertion cavity near the insertion hole is an annular cavity wall, and the guide arm is disposed at the annular cavity wall.
[0018] Furthermore, the housing includes a split housing base and a housing cover. The plug portion of the terminal is inserted into the housing cover. The spring and the portion of the terminal near the spring are both disposed in the housing base. The first through hole, the second through hole, the first through hole, the second through hole, the first button and the second button are all disposed on the side of the housing base away from the housing cover.
[0019] The pluggable electrical connector of this invention has the following advantages: The terminals are configured as a first contact arm and a second contact arm, while the spring contacts are configured as a first elastic arm that elastically abuts against the first contact arm and a second elastic arm that elastically abuts against the second contact arm. An elastic first space is formed between the first elastic arm and the first contact arm for plugging into a first wire harness, and an elastic second space is formed between the second elastic arm and the second contact arm for plugging into a second wire harness. Therefore, compared to the prior art, each terminal assembly can be plugged into two wire harnesses, allowing for electrical connection to more wire harnesses with the same number of terminals. Attached Figure Description
[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0021] Figure 1 This is a schematic diagram of one embodiment of the pluggable electrical connector of this utility model.
[0022] Figure 2 yes Figure 1 Exploded view.
[0023] Figure 3 yes Figure 1 A schematic diagram of the structure of the spring and terminal in one of the terminal assemblies.
[0024] Figure 4 yes Figure 1 A schematic diagram of the connection between the spring clip and the terminal.
[0025] Figure 5 yes Figure 1 Sectional view of AA.
[0026] Figure 6 yes Figure 5 A magnified view of part C in the middle.
[0027] The meanings of the labels in the attached diagram are as follows:
[0028] 100 housing; 110 housing base; 111 locking hole; 120 housing cover; 121 locking block; 130 assembly cavity; 131 main cavity; 132 insertion cavity; 1321 insertion hole; 1322 guide arm; 1323 annular cavity wall; 141 first through hole; 142 second through hole; 143 first through hole; 144 second through hole;
[0029] Terminal assembly B;
[0030] Spring 200; base 210e; limiting segment 211; first bending segment 212; second bending segment 213; first elastic arm 220; first extension segment 221; second extension segment 222; elastic abutment end 223; first concave portion 224; second elastic arm 230; first extension segment 231; second extension segment 232; elastic abutment end 233;
[0031] Terminal 300; main body 310; first contact arm 320; second contact arm 330; pressing part 340; plug-in part 350; first elastic clamping arm 351; second elastic clamping arm 352; clamping space 353; connecting part 354;
[0032] First button 410; second button 420. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0034] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0035] 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0036] Please see Figures 1 to 6 In this article, combined with Figures 1 to 6 The structure shown is an exemplary description of the pluggable electrical connector of this utility model, so as to more clearly illustrate the various components and mating relationships of the pluggable electrical connector. It should be understood that, although the following will... Figures 1 to 5The pluggable electrical connector shown is described in detail as an example, but is not intended to limit the scope of the pluggable electrical connector of this invention. Apart from the components that solve the necessary technical problems of this invention, the other components can be regarded as non-essential technical elements. These non-essential technical elements can be replaced by other technical elements with the same or similar functions or structures in other embodiments, or these non-essential technical elements may not be needed in other embodiments.
[0037] Please see Figure 1 and Figure 2 The pluggable electrical connector shown includes a housing 100 and five sets of terminal assemblies B disposed within the housing 100. Each set of terminal assemblies B includes a spring contact 200 and a terminal 300 disposed within the housing 100. The spring contact 200 can engage with the terminal 300 and can also separate from the terminal 300 under external force. The spring contact 200 clamps the wire harness inserted into the housing 100 by engaging with the terminal 300 to achieve an electrical connection between the wire harness and the terminal 300. It should be understood that the number of terminal assemblies B is not limited to the five sets shown in the figure; in any case, the number of sets of terminal assemblies B should be at least one.
[0038] In each set of terminal 300 assembly B, the spring 200 and the terminal 300 are distributed in the housing 100 along the insertion direction of the wire harness. The spring 200 is closer to the wire harness side (hereinafter referred to as the first side), and the terminal 300 is further away from the wire harness side (hereinafter referred to as the second side opposite to the first side).
[0039] Please see Figure 3 and Figure 4The spring piece 200 has a base 210 confined within the housing 100 and a first elastic arm 220 and a second elastic arm 230 respectively connected to both ends of the base 210. The base 210 can be held and confined within the housing 100 by a terminal 300. Therefore, the base 210 can be configured as a U-shaped structure with an opening facing a second side (towards the terminal 300) to facilitate the holding and confining by the terminal 300. Specifically, the base 210 has a limiting section 211, a first bending section 212, and a second bending section 213. One end of the limiting section 211 faces a third side adjacent to both the first and second sides, and the other end of the limiting section 211 faces a fourth side opposite to the third side. The first bent segment 212 extends towards the second side after being bent from one end of the limiting segment 211, and the second bent segment 213 extends towards the second side after being bent from the other end of the limiting segment 211, thereby forming a U-shaped base 210 with an opening facing the second side. The first elastic arm 220 is configured to connect to one end of the base 210 (i.e., the first bent segment 212), and the first elastic arm 220 is inclined towards the third side and towards the second side, with the end of the first elastic arm 220 away from the base 210 being closer to the second side. The second elastic arm 230 is configured symmetrically to the first elastic arm 220 and is connected to the other end of the base 210 (i.e., the second bent segment 213), and the second elastic arm 230 is inclined towards the fourth side and towards the second side, with the end of the second elastic arm 230 away from the base 210 being closer to the second side.
[0040] In the illustrated embodiment, both the first elastic arm 220 and the second elastic arm 230 can be formed by a bending process, for example, they can be configured, but are not limited to, the following structures:
[0041] The first elastic arm 220 extends obliquely from one end (first bent section 212) of the base 210 towards a second side (since the base 210 is closer to the external wiring harness outside the first side, the direction towards the first side can be called outward, and the direction towards the second side can be called inward or inward) and towards a third side (the first contact arm 320 described below is located on the third side) to form a first extension segment 221, a second extension segment 222 extending obliquely outward (in the first side direction) and towards the third side from the first extension segment 221, and an elastic abutment end 223 extending inward (in the second side direction) and towards the third side from the second extension segment 222. The elastic abutment end 223 is used to elastically abut against the first contact arm 320 described below. A first recessed portion 224 is formed between the first extension segment 221 and the second extension segment 222. The first recessed portion 224 is used to form a first button 410 described below (see Figure 5The obstruction prevents the first button 410 from being buried inside the housing 100 due to excessive inward movement, thereby preventing the first elastic arm 220 from failing to return to its original position because the first button 410 is buried inside the housing 100.
[0042] The second elastic arm 230 also has a first extension segment 231 extending obliquely from the other end of the base 210 (the second bent segment 213) towards the second side and towards the fourth side (the second contact arm 330 described below is located on the fourth side), a second extension segment 232 extending obliquely outward (in the first side direction) and towards the fourth side from the first extension segment 231, and an elastic abutment end 233 extending inward (in the second side direction) and towards the fourth side from the second extension segment 232. The elastic abutment end 233 is used to elastically abut against the second contact arm 330 described below. A second recessed portion 234 is formed between the first extension segment 231 and the second extension segment 232. The second recessed portion 234 is used to form a support for the second button 420 described below (see Figure 5 The second button 420 is blocked to prevent it from being buried inside the housing 100 due to excessive inward movement, thereby preventing the second elastic arm 230 from failing to return to its original position because the second button 420 is buried inside the housing 100.
[0043] It should be understood that the first concave portion 224 and the second concave portion 234 described above are preferred but not necessary structures, or the first concave portion 224 and the second concave portion 234 may be formed without the manner described above. In specific implementations, when it is necessary to provide the first concave portion 224 and the second concave portion 234, any existing implementation method can be used to make the spring piece 200 partially concave.
[0044] The terminal 300 can be configured as follows:
[0045] The terminal 300 may include a main body 310, a first contact arm 320 disposed on the main body 310 facing a third side, a second contact arm 330 disposed on the main body 310 facing a fourth side, a holding portion 340 disposed on the main body 310 facing a first side, and a plug-in portion 350 disposed on the main body 310 facing a second side. The main body 310 may be configured as a block structure. It should be understood that the function of the main body 310 is to connect the first contact arm 320, the second contact arm 330, the holding portion 340, and the plug-in portion 350. In other embodiments, the first contact arm 320 and the second contact arm 330 may be directly connected to the plug-in portion 350. In the embodiment where the base 210 does not need to be limited within the housing 100 by the terminal 300, the holding portion 340 may also be omitted accordingly.
[0046] The first contact arm 320 is bent from one edge of the main body 310 toward a third side (corresponding to the position of the first elastic arm 220), and the second contact arm 330 is bent from one edge of the main body 310 toward a fourth side (corresponding to the position of the first elastic arm 220). That is, the first contact arm 320 and the second contact arm 330 are distributed along the insertion direction of the wire harness at the end of the first elastic arm 220 away from the base 210, and the second contact arm 330 is distributed along the insertion direction of the wire harness at the end of the second elastic arm 230 away from the base 210. The first contact arm 320 and the second contact arm 330 have opposing sides and opposite sides.
[0047] The two ends of the first elastic arm 220 and the second elastic arm 230 described above, which are far apart from each other (the two elastic abutment ends 223, 233), can respectively abut against the opposite side of the first contact arm 320 and the second contact arm 330. The first elastic arm 220 and the second elastic arm 230 can be separated from the first contact arm 320 and the second contact arm 330 respectively under the action of external force to form a first space and a second space (not shown in the figure). The first space and the second space are both elastic clamping spaces used to clamp the wire harness entering therein.
[0048] The pressing part 340 is disposed on the first side edge of the main body 310 at a position corresponding to the base 210. The shape of the pressing part 340 is adapted to the internal space of the base 210, and the pressing part 340 holds and limits the base 210 against the first side inner wall of the housing 100. The pressing part 340 and the base 210 are similar in shape and also have a U-shaped structure adapted to them. The design of the U-shaped pressing part 340 and the base 210 allows the base 210 to be pressed and limited to the first side inner wall of the housing 100 from the second side to the first side, and can also limit the base 210 from the third and fourth sides.
[0049] The insertion portion 350 is used to engage with the mating portion of the mating connector to achieve an electrical connection between the two. The insertion portion 350 is connected to a side of the main body 310 facing the second side, and includes a first elastic clamping arm 351 and a second elastic clamping arm 352 disposed opposite to each other, forming a clamping space 353 between the first elastic clamping arm 351 and the second elastic clamping arm 352. The ends of the first elastic clamping arm 351 and the second elastic clamping arm 352 near the main body 310 are connected to the second side edge of the main body 310 via a connecting portion 354. The first elastic clamping arm 351 and the second elastic clamping arm 352 can be integrally bent and formed with the connecting portion 354, and can also be integrally formed with the main body 310.
[0050] The internal structure of the housing 100 is configured according to the terminal 300 assembly B. The housing 100 can be configured to include a housing base 110 and a housing cover 120 detachably disposed on the second side of the housing base 110. The housing base 110 and the housing cover 120 can be detachably connected by snap-fit, screw-fit, or other detachable connection methods. In the illustrated embodiment, at least two opposite sidewalls of the housing base 110 are provided with at least one locking hole 111 or locking block at one end facing the housing cover 120. Correspondingly, at least one locking block 121 or locking hole is provided on the housing cover 120. The housing base 110 is used to assemble the spring 200 and the portion of the terminal 300 near the first side therein, such as the main body 310, the first contact arm 320, the second contact arm 330, and the holding portion 340 of the terminal 300. The housing cover 120 is used to assemble the portion of the terminal 300 near the second side therein, such as the insertion portion 350 of the terminal 300.
[0051] Please see Figure 1 , Figure 2 , Figure 5 and Figure 6 The housing 100 has an assembly cavity 130 for assembling each terminal 300 assembly B. The assembly cavity 130 may include a main cavity 131 and a insertion cavity 132 for accommodating the insertion part 350. The insertion cavity 132 extends outward through the housing 100 to form an insertion hole 1321. The main cavity 131 may be configured to be disposed on the housing base 110, and the main cavity 131 extends through the housing base 110 in a second-side direction. The insertion cavity 132 may be configured to be disposed on the housing cover 120, and the insertion cavity 132 extends through the housing cover 120 in a first-side direction so that the insertion cavity 132 and the main cavity 131 are interconnected, thereby allowing the insertion part 350 to be inserted into the insertion cavity 132.
[0052] The insertion cavity 132 is provided with a guide arm 1322 that inserts into the clamping space 353 along the axial direction of the insertion part 350, and the guide arm 1322 is located outside the insertion hole 1321 on the projection surface of the insertion cavity 132 along the axial direction. Specifically, the inner diameter of the insertion cavity 132 is larger than the diameter of the insertion hole 1321, so that the cavity wall of the insertion cavity 132 near the insertion hole 1321 is an annular cavity wall 1323. The guide arm 1322 is located at the annular cavity wall 1323. Therefore, the guide arm 1322 will not obstruct the insertion part inserted into the clamping space 353 through the insertion hole 1321. The guide arm 1322 is used to guide the insertion part 350 during the insertion of the insertion part 350 into the insertion cavity 132, preventing the first elastic clamping arm 351 and the second elastic clamping arm 352 from shifting, ensuring that the insertion part 350 is assembled in place, and improving assembly efficiency.
[0053] The first sidewall of the housing 110 (also referred to as the first sidewall of the housing 100) is provided with a first through hole 141 and a second through hole 142 at positions corresponding to the first space and the second space, respectively. The first through hole 141 and the second through hole 142 penetrate the first sidewall of the housing 110 in the direction of the first side and the second side, thereby making the first through hole 141 and the second through hole 142 located on the side of the first elastic arm 220 and the second elastic arm 230 away from the terminal 300, respectively. The first through hole 141 is used for the first wire harness (not shown) to enter or exit the first space, and the second through hole 142 is used for the second wire harness (not shown) to enter or exit the second space.
[0054] When the first wire harness passes inward (towards the second side) into the first through hole 141 and compresses the first elastic arm 220, the first elastic arm 220 is separated from the first contact arm 320 by the compressive force, so that the first wire harness is inserted into the first space; when the first wire harness remains stationary in the first space, the first elastic arm 220 holds the first wire harness in the first space due to its own elasticity. When the second wire harness passes inward (towards the second side) into the second through hole 142 and compresses the second elastic arm 230, the second elastic arm 230 is separated from the second contact arm 330 by the compressive force, so that the second wire harness is inserted into the second space; when the second wire harness remains stationary in the second space, the second elastic arm 230 holds the second wire harness in the second space due to its own elasticity.
[0055] In the illustrated embodiment, to facilitate the removal of the wire harness, the pluggable electrical connector further includes a first button 410 corresponding to the first elastic arm 220 and a second button 420 corresponding to the second elastic arm 230. Correspondingly, a first through hole 143 and a second through hole 144 are also provided on the first sidewall of the housing 110. The first through hole 143 is close to and parallel to the first through hole 141; the second through hole 144 is close to and parallel to the second through hole 142. The first button 410 and the second button 420 are respectively inserted into the first through hole 143 and the second through hole 144 and can push the first elastic arm 220 and the second elastic arm 230 inward, so that the first elastic arm 220 and the second elastic arm 230 are separated from the first contact arm 320 and the second contact arm 330, thereby facilitating the removal of the first and second wire harnesses.
[0056] The first button 410 and the second button 420 are respectively unidirectionally confined outward within the first through hole 143 and the second through hole 144 to prevent the first button 410 and the second button 420 from disengaging from the first through hole 143 and the second through hole 144, respectively. Specifically, each of the first button 410 and the second button 420 is provided with a limiting step, which is located on the inner end face of the corresponding through hole. The limiting step can prevent the first button 410 and the second button 420 from disengaging outward from the first through hole 141 and the second through hole 142, respectively.
[0057] Based on the above embodiments, the pluggable electrical connector of this utility model has the following beneficial effects: The terminal 300 is configured as a first contact arm 320 and a second contact arm 330, while the spring piece 200 is configured as a first elastic arm 220 that elastically abuts against the first contact arm 320 and a second elastic arm 230 that elastically abuts against the second contact arm 330. An elastic first space is formed between the first elastic arm 220 and the first contact arm 320 for plugging into a first wire harness, and an elastic second space is formed between the second elastic arm 230 and the second contact arm 330 for plugging into a second wire harness. Therefore, compared with the prior art, each terminal 300 assembly B can be plugged into two wire harnesses, and with the same number of terminals 300, it can be electrically connected to more wire harnesses.
[0058] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A plug-in electrical connector comprising a housing and a terminal assembly disposed within the housing, characterized by: The terminal assembly includes a spring and a terminal. The spring has a base located within the housing and a first elastic arm and a second elastic arm connected to the base. The terminal has a first contact arm and a second contact arm that elastically abut against the first elastic arm and the second elastic arm, respectively. The first elastic arm and the second elastic arm can be separated from the first contact arm and the second contact arm, respectively, under the action of external force to form a first space and a second space, respectively. The housing is provided with a first through hole and a second through hole that communicate with the first space and the second space, respectively, and the first through hole and the second through hole are used for corresponding wire harnesses to enter / exit the first space and the second space, respectively.
2. The plug-in electrical connector of claim 1, wherein: The spring contacts and terminals are distributed along the insertion direction of the wire harness; the first through hole and the second through hole are respectively located on the side of the first elastic arm and the second elastic arm away from the terminal; when the wire harness is inserted into the first through hole or the second through hole and squeezes the corresponding first elastic arm or the second elastic arm, the corresponding first elastic arm or the second elastic arm is separated from the corresponding first contact arm or the second contact arm by the squeezing force, so that the wire harness is inserted into the corresponding first space or the second space; when the wire harness remains stationary in the corresponding first space or the second space, the corresponding first elastic arm or the second elastic arm holds the wire harness in the corresponding first space or the second space.
3. The plug-in electrical connector of claim 2, wherein: The first contact arm and the second contact arm are distributed along the insertion direction of the wire harness at the end of the first elastic arm away from the base, and the second contact arm is distributed along the insertion direction of the wire harness at the end of the second elastic arm away from the base; both ends of the first elastic arm and the second elastic arm that are far apart from each other can abut against the opposite side of the first contact arm and the second contact arm.
4. The plug-in electrical connector of claim 3, wherein: It also includes a first button and a second button that are configured in pairs with the first elastic arm and the second elastic arm. A first through hole parallel to the first through hole is provided on the housing, and a second through hole parallel to the second through hole is provided on the housing. The first button and the second button are respectively inserted into the first through hole and the second through hole and can push the first elastic arm and the second elastic arm inward respectively, so that the first elastic arm and the second elastic arm are separated from the first contact arm and the second contact arm respectively. The first button and the second button are respectively unidirectionally confined outward in the first through hole and the second through hole to prevent the first button and the second button from detaching from the first through hole and the second through hole, respectively.
5. The plug-in electrical connector of claim 4, wherein: The first elastic arm is formed by bending a first recessed portion in the direction of the terminal at the position corresponding to the first button, and the second elastic arm is formed by bending a second recessed portion in the direction of the terminal at the position corresponding to the second button. The first elastic arm and the second elastic arm each have a first extension segment extending inward from the base and inclined toward the corresponding first contact arm or second contact arm, a second extension segment extending outward from the first extension segment and inclined toward the corresponding first contact arm or second contact arm, and an elastic abutment end extending inward from the second extension segment and toward the corresponding first contact arm or second contact arm. The two elastic abutment ends abut against one side of the first contact arm and the second contact arm, respectively. The second extension segment forms a corresponding first recess or second recess with the first extension segment, and the inner ends of the first button and the second button are located in the first recess and the second recess, respectively.
6. The plug-in electrical connector of claim 3, wherein: The terminal also has a main body, and the first contact arm and the second contact arm are respectively disposed on the main body on two sides corresponding to the first elastic arm and the second elastic arm.
7. The plug-in electrical connector of claim 6, wherein: The base is held and limited by the terminal on the inner wall of the housing on the side away from the terminal; The base is configured as a U-shaped structure with the opening facing the terminal; the terminal has a pressing part adapted to the inner space of the U-shaped base, the pressing part is disposed on the main body at a position corresponding to the inner space, and the pressing part holds and limits the base against the inner wall of the housing on the side away from the terminal.
8. The plug-in electrical connector of claim 6, wherein: A plug-in portion is provided on the side of the main body away from the base. A plug-in cavity for accommodating the plug-in portion is provided on the housing at a position corresponding to the plug-in portion. The plug-in cavity extends outward through the housing to form a plug-in hole.
9. The plug-in electrical connector of claim 8, wherein: The insertion part includes a first elastic clamping arm and a second elastic clamping arm disposed opposite to each other, and a clamping space is formed between the first elastic clamping arm and the second elastic clamping arm; a guide arm is provided in the insertion cavity and inserted into the clamping space along the axial direction of the insertion part, and the projection surface of the guide arm projected in the axial direction of the insertion cavity is located outside the insertion hole. The inner diameter of the insertion cavity is larger than the diameter of the insertion hole, so that the cavity wall on the side of the insertion cavity near the insertion hole is an annular cavity wall, and the guide arm is disposed at the annular cavity wall.
10. The plug-in electrical connector of claim 6, wherein: The housing includes a split housing base and a housing cover. The plug portion of the terminal is inserted into the housing cover. The spring and the portion of the terminal near the spring are both disposed in the housing base. The first through hole, the second through hole, the first through hole, the second through hole, the first button and the second button are all disposed on the side of the housing base away from the housing cover.