Electric connector

Abstract

The utility model discloses an electric connector, which comprises a shell and a cover body, the shell is provided with a terminal accommodating cavity, a first terminal, a second terminal and an elastic piece are arranged in the terminal accommodating cavity of the shell, the second terminal is positioned between the first terminal and the elastic piece, and the second terminal is used for contacting with the first terminal to form electric connection; the cover body is in threaded connection with the shell; wherein when the cover body is assembled with the shell, 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 is utilized to enable the second terminal and the first terminal to be in compressed contact. 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 electrical connector, in particular to an electrical connector. Background Art

[0002] Electrical connectors (Electric Connector) are widely used in various industrial fields, such as vehicle connectors in automotive electronic and electrical architectures, and energy storage connectors for photovoltaic power generation systems, grid energy storage systems, and charging piles. Currently, electrical connectors generally include a plastic housing and several conductive terminals installed in the housing. The several conductive terminals are bolt-connected to make the terminals contact each other to form an electrical connection. After the several 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 electrical connector, which includes a socket terminal 2 and a plug terminal 3 installed inside the housing 1 of the electrical connector. Figure 1A and Figure 1B shows the components and assembly relationships of this electrical connector, Figure 1C shows the threaded connection method of the socket terminal 2 and the plug terminal 3 of this electrical connector.

[0004] In the existing installation method of electrical connectors, bolts are generally used to firmly 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, however, the demand for electrical connectors is large, and the bolt installation method also makes the product assembly of electrical 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 electrical connector.

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

[0007] In a first aspect, the electrical connector of the utility model includes:

[0008] A housing having a terminal receiving cavity. In the terminal receiving cavity of the housing, there are a first terminal, a second terminal, and an elastic member. The second terminal is located between the first terminal and the elastic member, and the second terminal is used to contact the first terminal to form an electrical connection;

[0009] A cover body threadedly connected to the housing;

[0010] Wherein, when the cover body is configured to be assembled with the housing, 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.

[0011] In combination with the first aspect, the present utility model provides the first preferred embodiment of the first aspect. Specifically, the housing has a tubular connection portion, and the lumen of the tubular connection portion forms a part of the cavity of the terminal receiving cavity;

[0012] Wherein, an external thread is provided on the outer peripheral wall of the tubular connection portion, and an internal thread is provided on the inner peripheral wall of the cover body. The cover body is threadedly connected to the outer peripheral wall of the tubular connection portion;

[0013] Alternatively, an internal thread is provided on the inner peripheral wall of the tubular connection portion, and an external thread is provided on the outer peripheral wall of the cover body. The cover body is threadedly connected into the lumen of the tubular connection portion.

[0014] In combination with the first aspect, the present utility model provides the second preferred embodiment of the first aspect. Specifically, a cutting groove is provided on the outer peripheral wall of the tubular connection portion, and the cutting groove can be adapted to the outer contour of the second terminal.

[0015] Wherein, the second terminal is inserted through the cutting groove of the tubular connection portion, and the end of the second terminal is placed in the terminal receiving cavity.

[0016] In combination with the first aspect, the present utility model provides the third preferred embodiment of the first aspect. Specifically, the cover body has a tubular limiting portion, and the tubular limiting portion has a columnar cavity adapted to the elastic member;

[0017] Wherein, when the cover body is assembled with the housing, the tubular limiting portion is inserted through the terminal receiving cavity, and the elastic member is inserted through the columnar cavity of the tubular limiting portion.

[0018] In combination with the first aspect, the present utility model provides the fourth preferred embodiment of the first aspect. Specifically, a convex portion is provided in the columnar cavity of the tubular limiting portion, and an insertion gap is formed between the outer side wall of the convex portion and the inner side wall of the tubular limiting portion;

[0019] Wherein, the end of the elastic member can be adaptively inserted into the insertion gap.

[0020] In combination with the first aspect, the present utility model provides the fifth preferred embodiment of the first aspect. Specifically, the second terminal is a copper busbar, and a plurality of notches are provided on the side wall of the second terminal; the housing has a plurality of limiting blocks provided in the terminal receiving cavity, and the plurality of limiting blocks are adapted to the plurality of notches of the second terminal;

[0021] Wherein, the limiting blocks of the housing are inserted into the notches of the second terminal to limit the relative sliding movement of the second terminal with respect to the housing.

[0022] In combination with the first aspect, the present utility model provides the 6th preferred embodiment of the first aspect. Specifically, the second terminal is a copper busbar, and a limiting hole is provided at the end of the second terminal passing through the terminal accommodation cavity;

[0023] The first terminal is embedded in the housing, and a limiting post is provided at the end of the first terminal;

[0024] Wherein, the surface of the copper busbar of the second terminal contacts the end of the first terminal, and the limiting post of the first terminal passes through the limiting hole of the second terminal to limit the relative sliding movement of the second terminal with respect to the first terminal.

[0025] In combination with the first aspect, the present utility model provides the 7th preferred embodiment of the first aspect. Specifically, the first terminal is a pipe structure, and the first terminal has a flat part and a tubular part arranged at the head and tail. The tubular part is fixedly connected with a conductive end cap;

[0026] Wherein, the flat part is a stamping structure formed by stamping at the end of the pipe of the first terminal, the conductive end cap is used for surface contact with the surface of the copper busbar of the second terminal, and the conductive end cap is connected with the limiting post.

[0027] In combination with the first aspect, the present utility model provides the 8th preferred embodiment of the first aspect. Specifically, the tubular part of the first terminal is a tubular structure formed by local pipe diameter expansion of the first terminal;

[0028] The conductive end cap is a cold heading part, and the conductive end cap has an integrally formed head and a connecting part;

[0029] Wherein, the head is flat, and the outer wall surface of the head contacts the surface of the copper busbar of the second terminal;

[0030] The connecting part passes through the tubular part of the first terminal, and the connecting part is fixedly connected with the tubular part by thread connection, welding or press fitting.

[0031] In the second aspect, the present utility model further provides an electrical connector for connecting copper busbars to form an electrical connection, including:

[0032] A housing, the housing has a terminal accommodation cavity, and a conductive terminal is embedded in the terminal accommodation cavity of the housing; the housing has a tubular connecting part, the lumen of the tubular connecting part forms a part of the cavity of the terminal accommodation cavity, the outer peripheral wall of the tubular connecting part is provided with an external thread, and the outer peripheral wall of the tubular connecting part is provided with a cutting groove;

[0033] A cover body, the inner peripheral wall of the cover body is provided with an internal thread, and the cover body is threadedly connected to the outer peripheral wall of the tubular connecting part;

[0034] A threaded spring is disposed in the terminal receiving cavity of the housing.

[0035] Wherein, the copper bar can pass through the housing's terminal receiving cavity through the notch, and the copper bar is located between the threaded spring and the conductive terminal; when the cover is configured to be assembled with the housing, the cover can press against the threaded spring and cause the threaded spring to be compressed and deformed, and the elastic force generated by the compression deformation of the threaded spring is used to tightly contact the copper bar and the conductive terminal.

[0036] Compared with the prior art, the beneficial effects of the present utility model are:

[0037] The present utility model provides an electrical connector, including a housing and a cover. The housing has a terminal receiving cavity, and a first terminal, a second terminal and an elastic member are provided in the terminal receiving cavity of the housing. The second terminal is located between the first terminal and the elastic member, and the second terminal is used to contact the first terminal to form an electrical connection; the cover is threadedly connected to the housing; wherein, when the cover is configured to be assembled with the housing, the cover 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 contact the second terminal and the first terminal.

[0038] Compared with the traditional method of using bolts to fasten two terminals, 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, greatly simplifying the assembly process and improving the assembly efficiency of the electrical connector. In the electrical connector of the present technology, after the first terminal and the second terminal are installed in the terminal receiving cavity of the housing, an elastic pressure is applied to the second terminal through the elastic member, so that the second terminal is in close contact with the first terminal, thereby achieving electrical connection between the two. The cover that is threadedly connected to the housing 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 contact the second terminal and the first terminal, so as to keep the second terminal and the first terminal in stable and reliable close contact.

[0039] In summary, the electrical connector of the present utility model adopts a new fixing structure and fixing method, realizing simple and convenient disassembly of the components in the electrical connector, not only simplifying the assembly process, but also ensuring the stability and reliability of the electrical connection between multiple terminals of the electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The following further describes in detail the specific embodiments of the present utility model with reference to the drawings, wherein:

[0041] Figure 1A is the first assembly schematic diagram of the existing electrical connector of the present invention;

[0042] Figure 1B is the assembly schematic of the existing electrical connector of the present invention Figure 2;

[0043] Figure 1C is a cross-sectional schematic view of the existing electrical connector of the present invention;

[0044] Figure 2 is a three-dimensional schematic view of the electrical connector of the present utility model;

[0045] Figure 3 is an assembly schematic view of the electrical connector of the present utility model;

[0046] Figure 4 is a schematic view of the structure of another perspective of the electrical connector of the present utility model;

[0047] Figure 5 is Figure 4 a schematic cross-sectional view taken along line A-A of

[0048] Figure 6 is an assembly schematic view of the second terminal and the housing of the present utility model;

[0049] In the figure:

[0050] 100 - housing, 110 - terminal receiving cavity, 111 - limiting block, 120 - tubular connecting portion, 121 - cutting groove;

[0051] 200 - cover body, 210 - tubular limiting portion, 211 - protruding portion, 212 - insertion gap;

[0052] 300 - elastic member;

[0053] 400 - first terminal, 410 - flat portion, 420 - tubular portion, 430 - conductive end cap, 440 - limiting post;

[0054] 500 - second terminal, 510 - notch, 520 - limiting hole. Detailed implementation manners

[0055] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not used to limit the present utility model.

[0056] The technical solutions in the embodiments of the present application will be clearly described below with reference to the 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.

[0057] It should be noted that when a component is referred to as "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.

[0058] 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 herein in the specification of this application 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.

[0059] The following will, with reference to the accompanying drawings, elaborate on some embodiments of this application. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0060] Embodiment 1

[0061] First, refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 to describe the schematic structural diagram of an electrical connector according to an embodiment of this application.

[0062] As shown in Figure 2 , the electrical connector of the present utility model includes a housing 100 and a cover 200. The housing 100 has a terminal receiving cavity 110. In the terminal receiving cavity 110 of the housing 100, there are a first terminal 400, a second terminal 500, and an elastic member 300. The second terminal 500 is located between the first terminal 400 and the elastic member 300. The second terminal 500 is used to contact the first terminal 400 to form an electrical connection. The cover 200 is threadedly connected to the housing 100. Among them, when the cover 200 is configured to be assembled with the housing 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.

[0063] The electrical connector of the present utility model aims to adopt a new fixing structure to achieve simple and convenient disassembly of the components in the electrical connector, which not only simplifies the assembly process but also ensures the stability and reliability of the electrical connection between multiple terminals of the electrical connector.

[0064] 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, greatly simplifying the assembly process and improving the assembly efficiency of the electrical connector. In the electrical connector of the present technology, after the first terminal 400 and the second terminal 500 are installed in the terminal receiving cavity 110 of the housing 100, 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 cover body 200 threadedly connected to the housing 100 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 press the second terminal 500 and the first terminal 400 into tight contact, so as to keep the second terminal 500 and the first terminal 400 in stable and reliable close contact.

[0065] In one embodiment, the terminal receiving cavity 110 of the housing 100 has a partial cavity for installing the first terminal 400, and the remaining partial cavity for accommodating the elastic member 300 and the second terminal 500. Among them, the first terminal 400 is embedded in the terminal receiving cavity 110 of the housing 100.

[0066] In a specific embodiment, the housing 100 is made of insulating plastic. Specifically, the housing 100 can be obtained by plastic injection molding to form the terminal receiving cavity 110 in the housing 100. On the other hand, the housing 100 can be injection molded together with the first terminal 400, and the housing 100 is an insulating injection molded part combined on the outer wall of the first terminal 400.

[0067] As Figure 3 shown, in a specific embodiment, the housing 100 is a columnar structure, and the housing 100 includes an integrally formed tubular connecting portion 120 and a mounting portion, and the tubular connecting portion 120 and the mounting portion are distributed up and down. Among them, the lumen of the tubular connecting portion 120 and the cavity of the mounting portion communicate with each other, and the lumen of the tubular connecting portion 120 and the cavity of the mounting portion together form the terminal receiving cavity 110. In one embodiment, the mounting portion can also be a tubular structure.

[0068] Among them, the tubular mounting portion is used for embedded installation of the first terminal 400. It can be understood that the first terminal 400 is detachably inserted into the tubular mounting portion. One end of the first terminal 400 is located in the terminal receiving cavity 110 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 tubular mounting portion of the housing 100, and this end is used for insertion into other electrical connectors or electrical equipment to form an electrical connection when the electrical connector is applied.

[0069] In a specific implementation, an external thread is provided on the outer peripheral wall of the tubular connection portion 120 of the housing 100, and an internal thread is provided on the inner peripheral wall of the cover 200. The cover 200 is threadedly connected to the outer peripheral wall of the tubular connection portion 120. As Figure 4 shown, in this implementation, the cover 200 is a tubular structure like a bottle cap structure. One end of the cover 200 is closed and the other end of the cover 200 is open, so that the cover 200 can be threadedly connected to the tubular connection portion 120 of the housing 100. In this implementation, the cover 200 can be directly installed by hand-twisting.

[0070] In the design concept of the cover, the cover is threadedly connected to the housing, and the cover can be screwed in and out along the thread direction. When the cover is screwed in along the thread direction, the relative position between the cover and the housing changes, which can increase the degree of compression deformation of the elastic member, thereby increasing the pressing force of the elastic member on the second terminal, so that the second terminal and the first terminal are in close contact with each other. When the cover is screwed out along the thread direction, the degree of compression deformation of the elastic member can be reduced, and the elastic member can recover elastically. When screwed out to a certain position, the close contact between the second terminal and the first terminal can be released, and the two can be separated from each other.

[0071] It can be understood that the design purposes of the cover 200 include: on the one hand, restricting the elastic member 300 within the terminal receiving cavity 110. On the second hand, compressing the elastic member 300 through the cover 200 to increase the elastic pressure of the elastic pressing member on the second terminal 500, ensuring the close contact between the first terminal 400 and the second terminal 500, and improving the stability and reliability of the electrical connector.

[0072] In another specific implementation, an internal thread is provided on the inner peripheral wall of the tubular connection portion 120, and an external thread is provided on the outer peripheral wall of the cover 200. The cover 200 is threadedly connected to the lumen of the tubular connection portion 120. It can be understood that in this implementation manner, the cover 200 is threadedly connected within the lumen of the tubular connection portion 120, rather than sleeved on the outer peripheral wall of the tubular connection portion 120.

[0073] In this implementation, the cover 200 can be installed by tools. For example, a slotted crosshead is provided on the outer surface of the cover 200 for a screwdriver to be screwed in and out; or a hand-twisting portion can be formed at the end of the cover 200. When the cover 200 is threadedly connected to the housing 100, the hand-twisting portion is located outside the tubular connection portion 120, so that the cover 200 is used in the same way as a wing bolt and can be rotated by hand-twisting.

[0074] As Figure 6As shown, a cutting groove 121 is provided on the outer peripheral wall of the tubular connecting portion 120 of the housing 100, and the cutting groove 121 can be adapted to the outer contour of the second terminal 500. Among them, the second terminal 500 is inserted through the cutting groove 121 of the tubular connecting portion 120, and the end of the second terminal 500 is placed in the terminal accommodation cavity 110.

[0075] It can be understood that the cutting groove 121 makes the outer peripheral wall of the tubular connecting portion 120 have a notch 510, and this notch 510 is for the second terminal 500 to be inserted into the tubular connecting portion 120 for contacting the first terminal 400 to form an electrical connection. In the field of this electrical connector, the second terminal 500 is generally a copper busbar or a terminal structure for connecting a wire, and the design of the cutting groove 121 allows the copper busbar to be inserted.

[0076] 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 when the cover body 200 is screwed in, 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.

[0077] In another specific implementation, the elastic member 300 can also be an elastic body made of rubber, which has good elasticity.

[0078] In a preferred implementation, when the elastic member 300 is a spiral spring, the cover body 200 further has a limiting structure for conveniently positioning and installing the spiral spring. On the one hand, it is convenient to install the spiral spring. On the other hand, the limiting structure is used to limit and position the position of the spiral spring in the terminal accommodation cavity 110 of the housing 100 to ensure that the end of the spiral spring can accurately abut against the second terminal 500 and ensure the electrical connection reliability of the electrical connector.

[0079] As Figures 4 - 5 shown, the present technology provides a specific implementation manner of the limiting structure. The cover body 200 has a tubular limiting portion 210, and the tubular limiting portion 210 has a columnar cavity adapted to the elastic member 300; among them, when the cover body 200 is assembled with the housing 100, the tubular limiting portion 210 is inserted through the terminal accommodation cavity 110, and the elastic member 300 is inserted through the columnar cavity of the tubular limiting portion 210.

[0080] Through the columnar cavity of the tubular limiting portion 210, the inner side wall of the tubular limiting portion 210 can form a good constraining effect on the spiral spring, and the structural design ensures the stable position of the spiral spring in the electrical connector and the reliability of use.

[0081] In one implementation, a protruding portion 211 is disposed in the columnar cavity of the tubular limiting portion 210, and an insertion gap 212 is formed between the outer sidewall of the protruding portion 211 and the inner sidewall of the tubular limiting portion 210; wherein, the end of the elastic member 300 can be adaptively inserted into the insertion gap 212.

[0082] Specifically, the protruding portion 211 is a cylinder, the protruding portion 211 is coaxially arranged with the tubular limiting portion 210, and the outer diameter of the protruding portion 211 is smaller than the inner diameter of the inner sidewall of the tubular limiting portion 210 to form the insertion gap 212. In a specific implementation, both the tubular limiting portion 210 and the protruding portion 211 are structures integrally injection-molded with the cover body 200.

[0083] In a specific implementation, as Figure 5 shown, the second terminal 500 is a copper busbar, and a plurality of notches 510 are formed in the sidewall of the second terminal 500. At least two notches 510 are preferred, and the two notches 510 are distributed on the left and right sides of the second terminal 500.

[0084] Among them, the housing 100 has a plurality of limiting blocks 111 disposed in the terminal receiving cavity 110. The limiting blocks 111 are integrally formed with the housing 100, and the plurality of limiting blocks 111 are adapted to the plurality of notches 510 of the second terminal 500. The so-called adaptation here means the adaptation of position, quantity, and size, such as the outer contours can be mutually engaged.

[0085] Among them, the limiting blocks 111 of the housing 100 are inserted into the notches 510 of the second terminal 500 to limit the relative sliding movement of the second terminal 500 with respect to the housing 100. It can be understood that through the limiting cooperation structure of the notches 510 and the limiting blocks 111, and the pressing of the elastic member 300, the second terminal 500 is firmly fixed in the housing 100.

[0086] Embodiment 2

[0087] Embodiment 2 of the present invention provides an electrical connector. Embodiment 2 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 1.

[0088] As Figures 3 - 5 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 busbar.

[0089] It should be noted that in a 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 housing 100 and serves as the part for connecting the electrical connector to an external electrical product; while the column structure of the pin terminal is located in the terminal receiving cavity 110 of the housing 100.

[0090] Among them, the copper busbar is a flat copper bar used for electrical connection, usually used in high-current applications because they can carry a large amount of current and provide low-resistance connections.

[0091] In a specific implementation, the first terminal 400 is a pipe structure. The first terminal 400 has a flat portion 410 and a tubular portion 420 arranged 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.

[0092] In the well-known technology in this field, stamping is a metal processing method. By using a die on a punching press, pressure is applied to the metal material to cause plastic deformation 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.

[0093] 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 440. The surface contact method makes the contact surface larger, the mechanical connection more stable, and reduces the phenomenon of poor contact caused by vibration, impact or mechanical stress.

[0094] 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.

[0095] In the well-known technology in this field, diameter expansion refers to a process of increasing the local diameter of a pipe through mechanical processing methods. 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.

[0096] 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.

[0097] In a specific implementation, both the first terminal 400 and the second terminal 500 are made of copper.

[0098] In a preferred implementation, a limiting hole 520 is provided at the end of the second terminal 500 that penetrates into the terminal accommodation cavity 110. A limiting post 440 is provided at the end of the first terminal 400. Specifically, the limiting post 440 is threadedly connected to the exact center of the conductive end cap 430.

[0099] Wherein, the copper row surface of the second terminal 500 contacts the end of the first terminal 400, and the limiting post 440 of the first terminal 400 penetrates through the limiting hole 520 of the second terminal 500 to limit the relative sliding movement of the second terminal 500 with respect to the first terminal 400.

[0100] Embodiment III

[0101] Embodiment III also provides a specific implementation manner of an electrical connector. As Figures 2 - 5 shown, an electrical connector in Embodiment III is used to connect copper rows to form an electrical connection. The electrical connector includes:

[0102] A housing 100 having a terminal accommodation cavity 110, and conductive terminals are embedded in the terminal accommodation cavity 110 of the housing 100; the housing 100 has a tubular connection portion 120, the lumen of the tubular connection portion 120 forms a part of the cavity of the terminal accommodation cavity 110, an external thread is provided on the outer peripheral wall of the tubular connection portion 120, and a cut groove 121 is provided on the outer peripheral wall of the tubular connection portion 120;

[0103] A cover body 200 having an internal thread on its inner peripheral wall, and the cover body 200 is threadedly connected to the outer peripheral wall of the tubular connection portion 120;

[0104] A threaded spring disposed in the terminal accommodation cavity 110 of the housing 100;

[0105] Wherein, the copper row can pass through the cut groove 121 into the terminal accommodation cavity 110 of the housing 100, and the copper row is located between the threaded spring and the conductive terminal; when the cover body 200 is configured to be assembled with the housing 100, the cover body 200 can press against the threaded spring and cause the threaded spring to be compressed and deformed, and the elastic force generated by the compression deformation of the threaded spring is used to tightly press the copper row and the conductive terminal in contact.

[0106] In this embodiment, the housing 100, the cover body 200, and the threaded spring all adopt the structures and assembly methods in Embodiment I. The conductive terminal is equivalent to the first terminal 400 in Embodiment I, and the copper row is equivalent to the second terminal 500 in Embodiment I.

[0107] For other structures of the electrical connector described in this embodiment, refer to the prior art.

[0108] 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 decorations 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 housing, wherein the housing has a terminal accommodating cavity, wherein a first terminal, a second terminal and an elastic member are arranged in the terminal accommodating cavity of the housing, wherein the second terminal is located between the first terminal and the elastic member, and the second terminal is used to contact the first terminal to form an electrical connection; A cover body, the cover body being threadedly connected to the shell; The cover is configured such that when assembled with the housing, 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 the second terminal into contact with the first terminal.

2. An electrical connector according to claim 1, characterized in that: The housing has a tubular connecting portion, and the tubular cavity of the tubular connecting portion forms a part of the cavity of the terminal accommodating cavity; Wherein, the outer peripheral wall of the tubular connecting part is provided with an external thread, the inner peripheral wall of the cover body is provided with an internal thread, and the cover body is threadedly connected to the outer peripheral wall of the tubular connecting part; Alternatively, the inner circumferential wall of the tubular connecting portion is provided with an internal thread, the outer circumferential wall of the cover body is provided with an external thread, and the cover body is threadedly connected to the tubular cavity of the tubular connecting portion.

3. An electrical connector according to claim 2, characterized in that: The outer peripheral wall of the tubular connecting portion is provided with a groove, and the groove can be adapted to the outer contour of the second terminal. Wherein, the second terminal is inserted into the groove of the tubular connecting portion, and the end of the second terminal is placed in the terminal accommodating cavity.

4. An electrical connector according to claim 1, characterized in that: The cover body has a tubular limiting portion, and the tubular limiting portion has a columnar cavity adapted to the elastic member; Wherein, when the cover body is assembled with the housing, the tubular limiting portion is inserted into the terminal accommodating cavity, and the elastic member is inserted into the columnar cavity of the tubular limiting portion.

5. An electrical connector according to claim 4, characterized in that: A protrusion is provided in the columnar cavity of the tubular limiting portion, and an insertion gap is formed between the outer wall of the protrusion and the inner wall of the tubular limiting portion; The end of the elastic member can be adapted to be inserted in the insertion gap.

6. An electrical connector according to any one of claims 1 to 5, characterized in that: The second terminal is a copper bar, and a plurality of notches are formed on the side wall of the second terminal; The housing has a plurality of limit blocks arranged in the terminal accommodating cavity, and the plurality of limit blocks are adapted to the plurality of notches of the second terminal; Wherein, the limiting block of the shell is arranged through the notch of the second terminal to limit the sliding movement of the second terminal relative to the shell.

7. An electrical connector according to any one of claims 1 to 5, characterized in that: The second terminal is a copper bar, and a limiting hole is provided at the end of the second terminal passing through the terminal accommodating cavity; The first terminal is embedded in the housing, and a limiting column is provided at the end of the first terminal; The copper bar surface of the second terminal contacts the end of the first terminal, and the limiting column of the first terminal passes through the limiting hole of the second terminal to limit the sliding movement of the second terminal relative to the first terminal.

8. An electrical connector according to claim 7, characterized in that: The first terminal is a tubular structure, and the first terminal has a flat portion and a tubular portion arranged end to end, and the tubular portion is fixedly connected to a conductive end cap; The flat portion is a stamped structure formed by stamping the end of the tube of the first terminal, the conductive end cap is used for surface contact with the copper busbar surface of the second terminal, and the conductive end cap is connected to the limiting column.

9. An electrical connector according to claim 8, characterized in that: The tubular portion of the first terminal is a tubular structure formed by expanding the diameter of a local tube of the first terminal; The conductive end cap is a cold-forged part, and the conductive end cap has an integrally formed head and a connecting part; The head is flat, and the outer wall surface of the head contacts the surface of the copper bar of the second terminal; The connecting portion is inserted into the tubular portion of the first terminal, and the connecting portion is threadedly connected, welded or crimped to the tubular portion.

10. An electrical connector for connecting copper bars to form an electrical connection, characterized in that: include: A housing, wherein the housing has a terminal accommodating cavity, in which a conductive terminal is embedded; the housing has a tubular connecting portion, the tubular cavity of the tubular connecting portion forms a partial cavity of the terminal accommodating cavity, the outer peripheral wall of the tubular connecting portion is provided with an external thread, and the outer peripheral wall of the tubular connecting portion is provided with a groove; A cover body, wherein the inner peripheral wall of the cover body is provided with an internal thread, and the cover body is threadedly connected to the outer peripheral wall of the tubular connecting portion; A thread spring, the thread spring being arranged in the terminal receiving cavity of the housing; The copper bar can be passed through the slot and arranged in the terminal accommodating cavity of the shell, and the copper bar is located between the threaded spring and the conductive terminal; the cover body is constructed so that when assembled with the shell, the cover body can press against the threaded spring and compress and deform the threaded spring, and the elastic force generated by the compression and deformation of the threaded spring is used to press the copper bar into contact with the conductive terminal.

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