Electric connector

Abstract

The utility model discloses an electric connector which comprises a base, a cover body, a second terminal and an elastic piece. Wherein the base is provided with a first terminal; the cover body is buckled on the base, and the cover body and the base jointly form a shell of the electric connector. The second terminal is arranged between the base and the cover body, and the second terminal is used for being in contact with the first terminal of the base to form electric connection. The elastic piece is arranged between the cover body and the second terminal; when the cover body and the base are assembled in a buckling mode, the cover body can abut against the elastic piece and enable the elastic piece to be compressed and deformed, and elastic force generated by elastic deformation of the elastic piece enables the second terminal to make contact with the first terminal in a pressing mode. Compared with a traditional mode that the two terminals are fastened through bolts, the electric connector does not need to fix the two terminals through the bolts to achieve contact conduction, the assembling process is greatly simplified, and the assembling efficiency of the electric connector is improved.

Description

Technical Field

[0001] The utility model relates to an electric connector, in particular to an electric connector. Background Art

[0002] Electric connectors are widely used in various industrial fields, such as vehicle connectors in automotive electronic and electrical architectures, as well as energy storage connectors for photovoltaic power generation systems, grid energy storage systems, and charging piles. Currently, an electric connector generally includes a plastic housing and a plurality of conductive terminals installed in the housing. The plurality of conductive terminals are connected by bolts so that the terminals are in contact with each other to form an electrical connection. After the plurality of conductive terminals are installed in the housing, an electrical connection is formed with other conductors through appropriate wiring techniques.

[0003] The invention patent with the publication number CN106953185A discloses an electric connector, which includes a socket terminal 2 and a plug terminal 3 installed inside an electric connector housing 1. Figure 1A and Figure 1B shows the components and assembly relationships of this type of electric connector, Figure 1C shows the threaded connection method of the socket terminal 2 and the plug terminal 3 of this type of electric connector.

[0004] In the existing installation method of electric connectors, bolts are generally used to tightly install the plug terminal 3 on the socket terminal 2 so that the plug terminal 3 and the socket terminal 2 are in close contact to establish an electrical connection. Currently, the demand for electric connectors is large, and the bolt installation method also makes the product assembly of electric connectors troublesome and the assembly efficiency low. Summary of the Utility Model

[0005] In order to overcome the above technical defects, the utility model provides an electric connector.

[0006] To solve the above problems, the utility model is realized according to the following technical solutions:

[0007] The electric connector of the utility model includes:

[0008] A base, on which a first terminal is installed;

[0009] A cover body, which is buckled on the base, and the cover body and the base together form the housing of the electric connector;

[0010] A second terminal, which is arranged between the base and the cover body, and the second terminal is used to contact the first terminal of the base to form an electrical connection;

[0011] An elastic member, which is arranged between the cover body and the second terminal;

[0012] When the cover body and the base are snap-fitted and assembled, the cover body can press against the elastic member and cause the elastic member to be compressed and deformed, and the elastic force generated by the elastic deformation of the elastic member is used to tightly press and contact the second terminal and the first terminal.

[0013] The present utility model also provides a preferred embodiment. Specifically, the base includes at least two pairs of snap-fastening members arranged in pairs, and the two snap-fastening members arranged in pairs are symmetrically distributed on the base;

[0014] The outer side wall of the cover body has at least two clamping portions;

[0015] When the cover body and the base are snap-fitted and assembled, the cover body is located between the two snap-fastening members arranged in pairs, and the two snap-fastening members arranged in pairs can clamp the cover body, and the base is snap-connected to the clamping portion of the cover body through the snap-fastening member, so that the base and the cover body are snap-locked with each other.

[0016] The present utility model also provides a preferred embodiment. Specifically, the snap-fastening member has a plurality of pawls arranged along the compression direction of the elastic member, and the plurality of pawls are arranged on the outer side wall of the snap-fastening member in contact with the cover body;

[0017] The clamping portion of the cover body is a plurality of teeth arranged along the compression direction of the elastic member, and the number of the teeth is set to be greater than the number of the pawls;

[0018] When the cover body and the base are snap-fitted and assembled, the pawls of the snap-fastening member are meshed with the teeth of the cover body.

[0019] The present utility model also provides a preferred embodiment. Specifically, the snap-fastening member includes a spring piece and an injection molded body arranged on the spring piece, the end of the spring piece is fixedly connected to the base, and the injection molded body has a plurality of the pawls;

[0020] The snap-fastening member makes the injection molded body in close contact with the cover body through the elastic force generated by the elastic deformation of the spring piece, and the two snap-fastening members arranged in pairs can clamp the cover body.

[0021] The present utility model also provides a preferred embodiment. Specifically, the electrical connector includes:

[0022] At least one unlocking member, the unlocking member has a pushing top portion, the unlocking member has an initial position and an unlocking position, and the unlocking member is slidably connected to the cover body so that the unlocking member can be switched between the initial position and the unlocking position;

[0023] Wherein, when the unlocking member is in the unlocking position, the pushing top of the unlocking member can simultaneously abut against two paired fastening members away from the cover body, so that the pawls of the fastening members are away from the teeth of the cover body, so as to release the engagement between the pawls and the teeth, and the cover body can be separated from the base.

[0024] The present utility model also provides a preferred embodiment. Specifically, at least one guiding block is provided on the cover body, and first protruding portions are respectively provided on the left and right side walls of the guiding block;

[0025] The unlocking member has a guiding portion, and a cutting groove is provided on the guiding portion;

[0026] Wherein, the unlocking member is mutually engaged with the guiding block through the cutting groove of the guiding portion, and is slidably matched with the guiding block through the guiding portion to limit the sliding direction of the unlocking member on the cover body;

[0027] The guiding portion is located below the first protruding portion of the guiding block, and the first protruding portion abuts against the surface of the guiding portion to limit the movement of the unlocking member in the direction perpendicular to the sliding direction.

[0028] The present utility model also provides a preferred embodiment. Specifically, a second protruding portion is provided on the upper surface of the guiding block;

[0029] The unlocking member has two paired elastic clamping arms, and the two elastic clamping arms are spaced above the guiding portion, and the opening directions between the two elastic clamping arms are opposite to the opening direction of the cutting groove of the guiding portion;

[0030] Wherein, the second protruding portion of the guiding block penetrates between the two elastic clamping arms of the unlocking member. When the unlocking member is in the initial position, the unlocking member is restricted in the initial position by being buckled on the second protruding portion by the two elastic clamping arms; when the unlocking member is switched from the initial position to the unlocking position, the two elastic clamping arms release the second protruding portion.

[0031] The present utility model also provides a preferred embodiment. Specifically, convex ribs with arc-shaped surfaces are respectively provided on the left and right side walls of the second protruding portion;

[0032] The elastic clamping arm has a head and a root connected to the unlocking member, and a limiting groove is formed between the roots of the two elastic clamping arms, and the limiting groove can accommodate the second protruding portion;

[0033] Wherein, the opening width of the limiting groove is set to be smaller than the width of the second protruding portion, and the distance between the two elastic clamping arms gradually increases from the opening of the limiting groove to the head of the elastic clamping arm, forming a flared opening.

[0034] The present utility model also provides a preferred embodiment. Specifically, the cover body has at least two positioning portions, and the two positioning portions are symmetrically arranged on two side walls of the cover body;

[0035] The base is provided with at least two positioning grooves adapted to the positioning portions;

[0036] Wherein, the sliding fit between the positioning portion of the cover body and the positioning groove of the base is used for the positioning, assembly and buckling of the cover body and the base.

[0037] The present utility model also provides a preferred embodiment. Specifically, the second terminal is a copper bar, and the second terminal has an external portion located outside the electrical connector and a contact portion located between the base and the cover body for contacting the first terminal; a limiting hole is provided in the contact portion of the second terminal;

[0038] A limiting post is provided on the upper surface of the base;

[0039] Wherein, the limiting post of the base passes through the limiting hole of the second terminal to limit the movement of the second terminal relative to the base.

[0040] Compared with the prior art, the beneficial effects of the present utility model are:

[0041] The present utility model provides an electrical connector, including a base, a cover body, a second terminal and an elastic member. Among them, the base is installed with a first terminal; the cover body is buckled on the base, and the cover body and the base jointly form the outer shell of the electrical connector. The second terminal is arranged between the base and the cover body, and the second terminal is used for contacting the first terminal of the base to form an electrical connection. The elastic member is arranged between the cover body and the second terminal; when the cover body and the base are buckled and assembled, the cover body can press against the elastic member and cause the elastic member to be compressed and deformed, and the elastic force generated by the elastic deformation of the elastic member is used to press the second terminal and the first terminal into tight contact.

[0042] Compared with the traditional method of fastening two terminals with bolts, the electrical connector of the present utility model does not need to use bolts to fix the two terminals to each other to achieve contact conduction, which greatly simplifies the assembly process and improves the assembly efficiency of the electrical connector. In the electrical connector of the present technology, an elastic pressure is applied to the second terminal through the elastic member to make the second terminal and the first terminal in close contact, so as to achieve the electrical connection between the two. And the cover body buckled and assembled with the base can press against the elastic member and cause the elastic member to be compressed and deformed, and the elastic force generated by the elastic deformation of the elastic member is used to press the second terminal and the first terminal into tight contact, so as to keep the second terminal and the first terminal in stable and reliable close contact.

[0043] In summary, the electrical connector of the present utility model adopts a new fixing structure and fixing method, enabling simple and convenient disassembly of components in the electrical connector. This not only simplifies the assembly process but also ensures the stability and reliability of the electrical connection between multiple terminals of the electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The following further elaborates on the specific embodiments of the present utility model with reference to the drawings, where:

[0045] Figure 1A Figure 1 is a schematic assembly view of the existing electrical connector of the present invention;

[0046] Figure 1B Figure 2 is a schematic assembly view of the existing electrical connector of the present invention; Figure 2 ;

[0047] Figure 1C Figure 3 is a schematic cross-sectional view of the existing electrical connector of the present invention;

[0048] Figure 2 Figure 4 is a three-dimensional schematic view of the electrical connector of the present utility model;

[0049] Figure 3 Figure 5 is a schematic assembly view of the electrical connector of the present utility model;

[0050] Figure 4 Figure 6 is a schematic assembly view of the elastic member and the cover body of the electrical connector of the present utility model;

[0051] Figure 5 Figure 7 is a schematic assembly view of the unlocking member and the cover body of the electrical connector of the present utility model;

[0052] Figure 6 Figure 8 is a three-dimensional schematic view of the unlocking member of the electrical connector of the present utility model;

[0053] In the figures:

[0054] 100 - Base, 110 - Fastening member, 111 - Spring piece, 112 - Pawl, 120 - Positioning groove, 130 - Limit post;

[0055] 200 - Cover body, 210 - Clamping portion, 220 - Guide block, 221 - First protruding portion, 222 - Second protruding portion, 230 - Positioning portion, 240 - Tubular limiting portion, 241 - Insertion gap;

[0056] 300 - Elastic member;

[0057] 400 - First terminal, 410 - Flat portion, 420 - Tubular portion, 430 - Conductive end cap;

[0058] 500 - Second terminal, 510 - Limiting hole;

[0059] 600 - unlocking member, 610 - pushing top, 620 - guiding part, 630 - elastic clamping arm. Detailed implementation mode

[0060] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0061] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0062] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments, and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0064] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0065] Embodiment 1

[0066] First, refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 to describe the structural schematic diagram of the electrical connector according to the embodiments of the present application.

[0067] As Figure 2 and Figure 3As shown in the figure, the electrical connector of the present utility model includes a base 100, a cover 200, a second terminal 500 and an elastic member 300. Among them, a first terminal 400 is installed on the base 100; the cover 200 is buckled on the base 100, and the cover 200 and the base 100 together form the outer shell of the electrical connector. The second terminal 500 is disposed between the base 100 and the cover 200, and the second terminal 500 is used to contact the first terminal 400 of the base 100 to form an electrical connection. The elastic member 300 is disposed between the cover 200 and the second terminal 500; when the cover 200 is buckled and assembled with the base 100, the cover 200 can press against the elastic member 300 and cause the elastic member 300 to be compressed and deformed, and the elastic force generated by the elastic deformation of the elastic member 300 is used to tightly press the second terminal 500 against the first terminal 400.

[0068] The electrical connector of the present utility model aims to adopt a new fixing structure to realize simple and convenient disassembly of the components in the electrical connector, which not only simplifies the assembly process, but also can ensure the stability and reliability of the electrical connection between the internal terminals of the electrical connector.

[0069] Specifically, the electrical connector of the present utility model does not need to use bolts to fix two terminals to each other to achieve contact conduction, which greatly simplifies the assembly process and improves the assembly efficiency of the electrical connector. In the electrical connector of the present technology, when the first terminal 400 and the second terminal 500 are installed in the outer shell of the electrical connector, an elastic pressure is applied to the second terminal 500 through the elastic member 300, so that the second terminal 500 is in close contact with the first terminal 400, thereby realizing the electrical connection between the two. The outer shell of the electrical connector is formed by buckling the base 100 and the cover 200, and the cover 200 can press against the elastic member 300 and cause the elastic member 300 to be compressed and deformed. The elastic force generated by the elastic deformation of the elastic member 300 is used to tightly press the second terminal 500 against the first terminal 400, so as to keep the second terminal 500 and the first terminal 400 in stable and reliable close contact.

[0070] In one embodiment, the outer shell of the electrical connector has a terminal receiving cavity for receiving the second terminal 500, and the terminal receiving cavity is formed when the cover 200 and the base 100 are buckled to each other.

[0071] In a specific embodiment, the upper surface of the base 100 has an installation groove for receiving the second terminal 500. When the cover 200 is buckled with the base 100, the cover 200 and the base 100 enclose to form a terminal receiving cavity. In some scenarios with higher sealing requirements, there is a sealing structure that cooperates with each other between the cover 200 and the base 100, and the sealing structure can include a matching structure of a groove and a protrusion. And a sealing material, such as a rubber pad, a sealing ring, etc., is provided at the contact part between the cover 200 and the base 100. When the cover 200 and the base 100 are buckled, the cover 200 and the base 100 clamp these sealing materials to play a role in sealing and waterproofing.

[0072] In one implementation, the base 100 has a cavity for mounting the first terminal 400. Among them, the first terminal 400 is embedded in the cavity of the base 100.

[0073] In a specific implementation, both the base 100 and the cover 200 are made of insulating plastic. Specifically, the cover 200 can be obtained by plastic injection molding to form structures such as the above-mentioned cavity and mounting groove on the base 100. On the other hand, the base 100 can be injection molded together with the first terminal 400, and the base 100 is an insulating injection part combined on the outer wall of the first terminal 400.

[0074] As Figure 3 shown, in a specific implementation, the base 100 is a plate-like structure, and the mounting groove is formed on the upper surface of the base 100. It is preferred that the shape of the mounting groove is adapted to the second conductive terminal.

[0075] Among them, the first terminal 400 is embedded in the middle of the base 100. It can be understood that the first terminal 400 is detachably inserted in the middle of the base 100. Specifically, one end of the first terminal 400 is located in the mounting groove of the base 100 and is used for surface contact with the second terminal 500 to form an electrical connection. The other end of the first terminal 400 extends out from the bottom of the base 100, and this end is used for being inserted into other electrical connectors or electrical equipment to form an electrical connection when the electrical connector is applied.

[0076] As Figure 3 shown, the base 100 includes at least two pairs of buckling members 110 arranged in pairs, and the two pairs of buckling members 110 arranged in pairs are symmetrically distributed on the base 100. The outer side wall of the cover 200 has at least two clamping portions 210. Among them, when the cover 200 and the base 100 are buckled and assembled, the cover 200 is located between the two pairs of buckling members 110 arranged in pairs, and the two pairs of buckling members 110 arranged in pairs can clamp the cover 200, and the base 100 is clamped with the clamping portion 210 of the cover 200 through the buckling members 110, so that the base 100 and the cover 200 are buckled and locked with each other.

[0077] In the design concept of the cover 200, the cover 200 is assembled with the base 100 by snap - fitting. Place the cover 200 on the base 100. By pressing the cover 200, the base 100 is snap - connected to the engaging portion 210 of the cover 200 through the snap - fitting member 110, so that the base 100 and the cover 200 are snap - locked to each other, and the elastic member 300 located between the base 100 and the cover 200 is compressed. The snap - fitting installation of the cover 200 causes the elastic member 300 to undergo compressive deformation, and the elastic member 300 exerts a pressing force on the second terminal 500, making the second terminal 500 and the first terminal 400 in close contact with each other. When the snap - fitting assembly of the cover 200 and the base 100 is released, the elastic member 300 can elastically recover and drive the cover 200 away from the base 100; and the close contact between the second terminal 500 and the first terminal 400 can be released, and the two can be separated from each other.

[0078] It can be understood that the design purposes of the cover 200 include: on the one hand, restricting the elastic member 300 within the housing of the electrical connector. On the second hand, by compressing the elastic member 300 through the cover 200, the elastic pressure of the elastic pressing member on the second terminal 500 is increased, ensuring the close contact between the first terminal 400 and the second terminal 500, and improving the stability and reliability of the electrical connector.

[0079] In a specific implementation, as Figure 3 shown, the snap - fitting member 110 has a plurality of pawls 112 arranged along the compression direction of the elastic member 300, and the plurality of pawls 112 are provided on the outer side wall of the snap - fitting member 110 in contact with the cover 200; the engaging portion 210 of the cover 200 is a plurality of teeth arranged along the compression direction of the elastic member 300, and the number of teeth is set to be greater than the number of pawls 112; wherein, when the cover 200 is snap - fitted and assembled with the housing, the pawls 112 of the snap - fitting member 110 are engaged with the teeth of the cover 200.

[0080] Through the meshing structure of the adapted pawls 112 and teeth, the detachment of the cover 200 can be well restricted, and the pawls 112 and teeth are arranged along the compression direction of the elastic member 300, with reasonable structural design and stable structure.

[0081] In a specific implementation, the number of teeth is set to be greater than the number of pawls 112, and the width of the teeth is set to be greater than the width of the pawls 112. This can ensure that the pawls 112 of the snap - fitting member 110 are fully engaged with the teeth of the cover 200.

[0082] In a specific implementation, at least two fastening members 110 can achieve the basic fastening function. In a preferred implementation, the base 100 is provided with four fastening members 110, that is, two pairs of fastening members 110 arranged in pairs. The four fastening members 110 are arranged at the four corners of a rectangle on the base 100. By clamping the cover 200 with two groups of fastening members 110, the installation stability can be improved. And the elastic force of the elastic member 300 is often relatively large, and the stability, quantity, etc. of this structural design are better.

[0083] Through research by the applicant, it is found that in order to achieve the close contact between the first terminal 400 and the second terminal 500, a screw spring with a relatively large elastic force is often selected for the elastic member 300. And due to the too large elastic force of the elastic member 300, the requirements for the fastening structure are relatively high. If the fastening member 110 is also directly integrally injection-molded with plastic, the root of the fastening member 110 integrally formed with the base 100 is emphasized, and it is difficult to meet the usage requirements. On the one hand, the root is easily broken and it is difficult to meet the need for repeated disassembly and assembly.

[0084] For this reason, the present technology provides a preferred implementation manner. Specifically, as Figure 3 shown, the fastening member 110 includes a spring piece 111 and an injection-molded body provided on the spring piece 111. The end of the spring piece 111 is fixedly connected to the base 100, and the injection-molded body has a plurality of the pawls 112;

[0085] Wherein, the fastening member 110 makes the injection-molded body in close contact with the cover 200 through the elastic force generated by the elastic deformation of the spring piece 111, and two fastening members 110 arranged in pairs can clamp the cover 200.

[0086] It should be noted that the spring piece 111 can be a stainless steel spring piece 111 or a spring steel piece, with a straight piece spring shape and a rectangular outer contour.

[0087] By using the spring piece 111, the fastening member 110 has good elasticity and anti-deformation ability. Specifically, by integrally injecting with the spring piece 111, the base 100 can be manufactured and the required pawls 112 can be formed.

[0088] In a preferred implementation, in order to facilitate disassembly, assembly and repeated use, the electrical connector includes at least one unlocking member 600. The unlocking member 600 has a pushing top 610. The unlocking member 600 has an initial position and an unlocking position, and the unlocking member 600 is slidably connected to the cover 200 so that the unlocking member 600 can be switched between the initial position and the unlocking position.

[0089] Wherein, when the unlocking member 600 is in the unlocking position, the pushing top portion 610 of the unlocking member 600 can simultaneously abut against two paired fastening members 110 away from the cover body 200, so that the pawls 112 of the fastening members 110 are away from the teeth of the cover body 200, to release the engagement between the pawls 112 and the teeth, and the cover body 200 can be separated from the base.

[0090] Specifically, the unlocking member 600 is also an injection molded part. The pushing top portion 610 of the unlocking member 600 is C-shaped, and the two ends of the pushing top portion 610 are used to simultaneously abut against two paired fastening members 110 away from the cover body 200. Specifically, protrusions are provided on the outer side walls of the two ends of the pushing top portion 610, and the outer walls of the snap members are abutted through the protrusions. In a preferred embodiment, a spherical portion is provided at the uppermost part of the injection molded body of the snap member, and the protrusions on the outer side walls of the two ends of the pushing top portion 610 are in contact with the spherical portion.

[0091] The using method of the unlocking member 600 is as follows: When a person's hand pushes the unlocking member 600 to slide from the initial position to the unlocking position, the protrusions on the outer side walls of the two ends of the pushing top portion 610 will respectively contact the outermost sides of the spherical portions of the two fastening members 110. At this time, the engagement between the pawls 112 and the teeth is released, and under the elastic thrust of the elastic member 300, the cover body 200 is separated from the base 100.

[0092] In a preferred embodiment, in order to facilitate the use of the unlocking member 600. As Figure 5 and Figure 6 shown, at least one guiding block 220 is provided on the cover body 200, and first protrusion portions 221 are respectively provided on the left and right side walls of the guiding block 220; the unlocking member 600 has a guiding portion 620, and a cutting groove is provided on the guiding portion 620;

[0093] Wherein, the unlocking member 600 is mutually engaged with the guiding block 220 through the cutting groove of the guiding portion 620, and the guiding portion 620 is slidably matched with the guiding block 220 to limit the sliding direction of the unlocking member 600 on the cover body 200; the guiding portion 620 is located below the first protrusion portion 221 of the guiding block 220, and the first protrusion portion 221 abuts against the surface of the guiding portion 620 to limit the movement of the unlocking member 600 in the direction perpendicular to the sliding direction.

[0094] Specifically, a second protrusion portion 222 is provided on the upper surface of the guiding block 220; the unlocking member 600 has two paired elastic clamping arms 630, and the two elastic clamping arms 630 are spaced above the guiding portion 620, and the opening directions between the two elastic clamping arms 630 are opposite to the opening direction of the cutting groove of the guiding portion 620;

[0095] Among them, the second protrusion 222 of the guiding block 220 passes through between two elastic clamping arms 630 of the unlocking member 600. When the unlocking member 600 is in the initial position, the two elastic clamping arms 630 buckle on the second protrusion 222 to limit the unlocking member 600 in the initial position; when the unlocking member 600 switches from the initial position to the unlocking position, the two elastic clamping arms 630 release the second protrusion 222.

[0096] In a specific implementation, convex ribs with arc-shaped surfaces are respectively arranged on the left and right side walls of the second protrusion 222; the elastic clamping arm 630 has a head and a root connected to the unlocking member 600, and a limiting groove is formed between the roots of the two elastic clamping arms 630, and the limiting groove can accommodate the second protrusion 222; wherein, the opening width of the limiting groove is set to be smaller than the width of the second protrusion 222, and the distance between the two elastic clamping arms 630 gradually increases from the opening of the limiting groove to the head of the elastic clamping arm 630, forming a flared opening.

[0097] In a specific implementation, in order to facilitate the positioning and installation of the cover body 200, the cover body 200 has at least two positioning parts 230, and the two positioning parts 230 are symmetrically arranged on two side walls of the cover body 200; the base 100 is provided with at least two positioning grooves 120 adapted to the positioning parts 230.

[0098] Among them, the sliding fit between the positioning part 230 of the cover body 200 and the positioning groove 120 of the base 100 is used for the positioning, assembly and buckling of the cover body 200 and the base 100.

[0099] In a preferred implementation, the second terminal 500 is a copper bar, and the second terminal 500 has an external part located outside the electrical connector and a contact part located between the base 100 and the cover body 200 for contacting the first terminal 400; a limiting hole 510 is formed in the contact part of the second terminal 500; a limiting post 130 is arranged on the upper surface of the base 100; wherein, the limiting post 130 of the base 100 passes through the limiting hole 510 of the second terminal 500 to limit the movement of the second terminal 500 relative to the base 100.

[0100] In a specific implementation, the elastic member 300 is a spiral spring, one end of the elastic member 300 abuts against the cover body 200, and the other end of the elastic member 300 abuts against the second terminal 500. It can be understood that after the cover body 200 is buckled and installed, the cover body 200 will squeeze the spiral spring, causing the spiral spring to deform and store energy, thereby increasing the elastic pressure on the second terminal 500.

[0101] In another specific implementation, the elastic member 300 can also be an elastic body made of rubber, which has good elasticity.

[0102] In a preferred embodiment, when the elastic member 300 is a helical spring, the cover 200 further has a limiting structure for conveniently positioning and installing the helical spring. On the one hand, it is convenient to install the helical spring. On the other hand, the limiting structure is used to limit and position the position of the helical spring to ensure that the end of the helical spring can accurately abut against the second terminal 500, thereby ensuring the electrical connection reliability of the electrical connector.

[0103] As Figure 4 shown, the present technology provides a specific implementation manner of a limiting structure. The cover 200 has a tubular limiting portion 240, and the tubular limiting portion 240 has a columnar cavity adapted to the elastic member 300. Wherein, when the cover 200 is assembled with the base 100, the tubular limiting portion 240 penetrates through the terminal receiving cavity, and the elastic member 300 penetrates through the columnar cavity of the tubular limiting portion 240.

[0104] Through the columnar cavity of the tubular limiting portion 240, the inner side wall of the tubular limiting portion 240 can form a good constraining effect on the helical spring, and the structural design ensures the stable position of the helical spring in the electrical connector and the reliability of use.

[0105] In one embodiment, a protrusion is provided in the columnar cavity of the tubular limiting portion 240, and an insertion gap 241 is formed between the outer side wall of the protrusion and the inner side wall of the tubular limiting portion 240. Wherein, the end of the elastic member 300 can be adaptively inserted into the insertion gap 241.

[0106] Specifically, the protrusion is a cylinder, the protrusion is coaxially arranged with the tubular limiting portion 240, and the outer diameter of the protrusion is smaller than the inner diameter of the inner side wall of the tubular limiting portion 240 to form the insertion gap 241. In a specific implementation, the tubular limiting portion 240 and the protrusion are both structures integrally injection-molded with the cover 200.

[0107] Embodiment Two

[0108] Embodiment Two of the present invention provides an electrical connector. Embodiment Two provides a specific application structure of a first terminal 400 and a second terminal 500 on the basis of the structure of the electrical connector in Embodiment One.

[0109] As Figure 3 shown, the first terminal 400 adopts a pin terminal structure in the field of this electrical connector, and the second terminal 500 is a copper bus bar.

[0110] It should be noted that in the conventional pin terminal structure, the pin terminal has a flat structure and a column structure distributed at the head and tail. The flat structure of the pin terminal often exposes outside the base 100 and serves as the part for the electrical connector to connect with external electrical products. The column structure of the pin terminal is located in the terminal receiving cavity of the base 100.

[0111] Among them, the copper busbar is a flat copper strip used for electrical connection and is usually used in high-current applications because they can carry a large amount of current and provide a low-resistance connection.

[0112] In a specific implementation, the first terminal 400 is of a pipe structure. The first terminal 400 has a flat portion 410 and a tubular portion 420 distributed at the head and tail. The tubular portion 420 is fixedly connected with a conductive end cap 430. Among them, the flat portion 410 is a stamping structure formed by stamping at the pipe end of the first terminal 400.

[0113] In the well-known technology in this field, stamping is a metal processing method. By using a die on a punching press to apply pressure to the metal material, plastic deformation is generated to obtain a workpiece with the required shape and size. The stamping process has the advantages of high production efficiency, low cost, and stable quality, so it has been widely used in industrial production. The flat portion 410 of the first terminal 400 in this embodiment is formed by stamping, without the need to use a cutting process to cut a large amount of copper column material in the prior art, improving the material utilization rate.

[0114] In this technology, the conductive end cap 430 is used to make surface contact with the copper busbar surface of the second terminal 500, and the conductive end cap 430 is connected with the limit post 130. The surface contact method makes the contact surface larger, the mechanical connection more stable, and reduces the poor contact phenomenon caused by vibration, impact, or mechanical stress.

[0115] Specifically, the tubular portion 420 of the first terminal 400 is a tubular structure formed by local pipe diameter expansion of the first terminal 400. The conductive end cap 430 is a cold heading part, and the conductive end cap 430 has an integrally formed head and a connecting portion. Among them, the head is flat, and the outer wall surface of the head makes surface contact with the copper busbar surface of the second terminal 500. The connecting portion passes through the tubular portion 420 of the first terminal 400, and the connecting portion is fixedly connected with the tubular portion 420 by threading, welding, or crimping.

[0116] In the well-known technology in this field, diameter expansion refers to a process of increasing the local diameter of a pipe through a mechanical processing method. The diameter expansion process mainly has two methods: mechanical diameter expansion and hydraulic diameter expansion. Mechanical diameter expansion is to expand the pipe by using special mechanical tools, such as a diameter expander or a diameter expansion die. Hydraulic diameter expansion is to expand the pipe by using the pressure generated by a hydraulic device.

[0117] Wherein, the head is flat, and the outer wall surface of the head contacts the copper row surface of the second terminal 500; the connecting portion is disposed in the tubular portion 420 of the first terminal 400, and the connecting portion is fixedly connected to the tubular portion 420 by screwing, welding or crimping.

[0118] In a specific embodiment, both the first terminal and the second terminal are made of copper.

[0119] For other structures of the electrical connector in this embodiment, refer to the prior art.

[0120] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An electrical connector, characterized in that: include: A base, wherein a first terminal is installed on the base; A cover body, the cover body is buckled on the base, and the cover body and the base together constitute a shell of the electrical connector; A second terminal, the second terminal is arranged between the base and the cover, and the second terminal is used to contact with the first terminal of the base to form an electrical connection; An elastic member, the elastic member is arranged between the cover body and the second terminal; When the cover is buckled and assembled with the base, the cover can press against the elastic member and compress and deform the elastic member, and the elastic force generated by the elastic deformation of the elastic member is used to press and contact the second terminal with the first terminal.

2. An electrical connector according to claim 1, characterized in that: The base comprises at least two buckling members arranged in pairs, and the two buckling members arranged in pairs are symmetrically distributed on the base; The outer side wall of the cover body has at least two clamping parts; Among them, when the cover body and the base are snap-fitted and assembled, the cover body is located between two snap-fitting parts arranged in pairs, the two snap-fitting parts arranged in pairs can clamp the cover body, and the base is snap-fitted with the snap-fitting parts of the cover body through the snap-fitting parts, so that the base and the cover body are snap-fitted and locked with each other.

3. An electrical connector according to claim 2, characterized in that: The buckle member has a plurality of pawls arranged along the compression direction of the elastic member, and the plurality of pawls are arranged on the outer side wall of the buckle member contacting the cover body; The locking portion of the cover body is a plurality of locking teeth arranged along the compression direction of the elastic member, and the number of the locking teeth is greater than the number of the pawls; When the cover body and the base are snap-fitted and assembled, the pawls of the snap-fitting member and the latching teeth of the cover body mesh with each other.

4. An electrical connector according to claim 3, characterized in that: The buckle comprises a spring sheet and an injection molded body arranged on the spring sheet, the end of the spring sheet is fixedly connected to the base, and the injection molded body has a plurality of ratchets; The elastic force generated by the elastic deformation of the spring sheet of the buckle piece enables the injection molded body to be in close contact with the cover body, and the two buckle pieces arranged in pairs can clamp the cover body.

5. An electrical connector according to claim 3 or 4, characterized in that: include: At least one unlocking member, the unlocking member having a push-up portion, the unlocking member having an initial position and an unlocking position, the unlocking member being slidably connected to the cover body so that the unlocking member can switch between the initial position and the unlocking position; When the unlocking member is in the unlocking position, the pushing top portion of the unlocking member can simultaneously push the two buckling members arranged in pairs away from the cover body, so that the pawl of the buckling member is away from the latching tooth of the cover body to release the engagement between the pawl and the latching tooth, and the cover body can be separated from the base.

6. An electrical connector according to claim 5, characterized in that: The cover body is provided with at least one guide block, and the left and right side walls of the guide block are respectively provided with first protrusions; The unlocking member has a guide portion, and the guide portion is provided with a cutting groove; The unlocking member is engaged with the guide block through the groove of the guide portion, and the guide portion and the guide block are slidably matched to limit the sliding direction of the unlocking member on the cover body; The guide portion is located below the first protrusion of the guide block, and the first protrusion abuts against the surface of the guide portion to limit the unlocking member from moving in a direction perpendicular to the sliding direction.

7. An electrical connector according to claim 6, characterized in that: The upper surface of the guide block is provided with a second protrusion; The unlocking member has two elastic clamping arms arranged in pairs, the two elastic clamping arms are arranged above the guide portion at an interval, and the opening direction between the two elastic clamping arms is opposite to the opening direction of the groove of the guide portion; In which, the second protrusion of the guide block is inserted between the two elastic clamping arms of the unlocking member. When the unlocking member is in the initial position, the two elastic clamping arms are buckled on the second protrusion to restrict the unlocking member to the initial position; when the unlocking member switches from the initial position to the unlocking position, the two elastic clamping arms release the second protrusion.

8. An electrical connector according to claim 7, characterized in that: The left and right side walls of the second raised portion are respectively provided with convex ribs with arc-shaped surfaces; The elastic clamp arm has a head and a root connected to the unlocking member, and a limiting groove is formed between the roots of the two elastic clamp arms, and the limiting groove can accommodate the second protrusion; The opening width of the limiting groove is smaller than the width of the second protrusion, and the distance between the two elastic clamping arms gradually increases from the opening of the limiting groove to the head of the elastic clamping arm, forming a trumpet-shaped opening.

9. An electrical connector according to any one of claims 1 to 4, characterized in that: The cover body has at least two positioning parts, and the two positioning parts are symmetrically arranged on two side walls of the cover body; The base is provided with at least two positioning grooves adapted to the positioning portion; The sliding cooperation between the positioning portion of the cover and the positioning groove of the base is used for positioning, assembling and buckling of the cover and the base.

10. An electrical connector according to any one of claims 1 to 4, characterized in that: The second terminal is a copper bar, and the second terminal has an external portion located outside the electrical connector, and a contact portion located between the base and the cover body for contacting the first terminal; the contact portion of the second terminal is provided with a limiting hole; A limiting column is provided on the upper surface of the base; Wherein, the limiting column of the base passes through the limiting hole of the second terminal to limit the movement of the second terminal relative to the base.

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