Anti-rotation connecting terminal and electric connector

Abstract

The utility model relates to the field of connectors, and discloses an anti-rotation connecting terminal and an electric connector, which comprise a main body section, a matching end which is formed by extending from one end of the main body section along a central axis and is used for being matched with a butt-joint terminal in an inserting manner, and a connecting end which is formed by extending from the other end of the main body section along the central axis and is electrically connected with an object, and the connecting end is provided with a limiting matching part which is used for limiting and matching with the connecting end to limit the rotation of the main body section when the connecting end is mounted in an insulator. Through the cooperation among the main body segment, the cooperation end and the connection end, the plug-in cooperation with an insulator, the cooperation end is cooperated with a butt-joint terminal, and the connection end is cooperated with an object, thereby achieving the electric signal connection. Through the cooperation between the connecting end and the limiting cooperation part, the main body segment is prevented from rotating relative to the insulator, and the stability between the anti-rotation connecting terminal and the insulator is ensured.

Description

Technical Field

[0001] The utility model relates to the field of connectors, and in particular to an anti-rotation connecting terminal and an electric connector. Background Art

[0002] Electrical connectors are widely used in electronics, electrical appliances, and instruments. They serve as a bridge between blocked circuits or independent circuits, and are responsible for current or signal transmission. They can also be used with electrical terminals to form a board-to-line connection, or they can be used independently to connect boards. Electrical connectors are widely used in various fields, such as automobiles, electric vehicles, and other motor vehicle fields to connect various electrical components.

[0003] Existing electrical connectors usually include a male connector and a female connector, which are connected by plugging and mating to realize electrical signal transmission as a connector assembly. Both male and female connectors are composed of an insulator and a metal terminal, but the terminal structures of different connectors vary in shape. However, for some terminal structures that are wide in the middle and narrow at both ends or narrow at one end, in order to install such terminals on the corresponding insulator, a cavity that matches the middle of the terminal is usually opened on the insulator, and then the position is limited by the elastic tight fit between the terminal and the middle of the strength. However, this method can only limit the freedom of the terminal in the radial and / or axial directions. In particular, for some metal terminals with round pins as docking terminals, in order to facilitate docking with them, the metal terminals are usually in a round tube structure. This structure makes it easy for the electrons to rotate relative to the insulator, which affects the use and quality of the connector. For this reason, the installation between the terminal and the insulator is unstable. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an anti-rotation connection terminal and an electrical connector to solve the problem of unstable connection between the terminal and the insulator.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an anti-rotation connecting terminal including a main body section, a mating end extending from one end of the main body section along the central axis and used for plugging and mating with a docking terminal, and a connecting end extending from the other end of the main body section along the central axis and electrically connected to an object, the connecting end is provided with a limiting mating portion for limiting the rotation of the main body section when installed in an insulator, thereby effectively limiting the rotational freedom of the main body section relative to the insulator and ensuring the stability of the electrical connector.

[0006] Furthermore, the main body section has a first annular shell wall and a first through cavity extending along the central axis direction, and the first annular shell wall is provided with a drainage hole extending along its radial direction so as to discharge the electroplating liquid during the electroplating process.

[0007] Furthermore, the mating end has a second annular shell wall and a second through cavity extending along the central axis direction, and a plurality of slits are arranged on the second annular shell wall, and the plurality of slits are distributed on the second annular shell wall at intervals along the circumferential direction, and each of the slits is distributed along the central axis direction and extends through the second annular shell wall in the radial direction; the portion of the second annular shell wall located between each two adjacent slits forms a spring sheet that elastically contacts the docking terminal, and a plurality of the spring sheets are enclosed outside the second through cavity to form an elastic mating cavity, and the elastic mating cavity is plugged into and mated with the docking terminal to achieve elastic mating with the docking terminal and complete electrical signal communication.

[0008] Furthermore, at least one of the spring sheets is defined as an inwardly curved sheet that bends radially inwardly, and the radial dimension of the middle section of the elastic fitting cavity enclosed by the inwardly curved sheet is smaller than the radial dimension of the two ends, so that it can elastically resist against the outer periphery of the docking terminal that is plugged in, thereby tightly fitting with the docking terminal, thereby achieving electrical connection while restricting the docking terminal.

[0009] Furthermore, the mating end also has a third annular shell wall formed on one end of the second annular shell wall away from the first annular shell wall and an insertion port that passes through along the central axis direction, so that an object can be inserted therein and mated therewith.

[0010] Furthermore, the limiting mating portion is defined as a mating plane formed on the connecting end, and the mating plane is limited by a limiting plane in the insulator, thereby achieving the purpose of anti-rotation and realizing the connection stability between the terminal and the insulator.

[0011] Furthermore, the connecting end has an arc-shaped half shell connected to the first annular shell wall, and an extension piece is provided on both lateral sides of the arc-shaped half shell. The surface where the extension piece and the lateral sides of the arc-shaped half shell are located is defined as the matching plane. The two extension pieces and the arc-shaped half shell are arranged to form a semicircular connecting cavity for an object to pass through and fit tightly with the object.

[0012] Furthermore, a convex hump located in the connecting cavity is provided on the shell wall of the arc-shaped half shell and convexly faces inward, so as to be further used to press against an object passing through the connecting cavity.

[0013] The utility model also provides an electric connector comprising an insulator and an anti-rotation connection terminal mounted on the insulator.

[0014] Furthermore, a first plug-in cavity is provided on the insulator along the central axis direction, and the anti-rotation connecting terminal is inserted therein to achieve plug-in fitting; a mounting cavity is recessed on the first surface of the insulator, and a movable block is detachably connected to the mounting cavity, and a second plug-in cavity is provided on the movable block along the central axis direction, for the connecting end of the anti-rotation connecting terminal to pass through and to be positionally fitted with a limiting fitting part, so as to facilitate positionally fitting with the limiting fitting part and limit the axial freedom and rotational freedom of the anti-rotation connecting terminal.

[0015] The anti-rotation connection terminal and electrical connector of the utility model have at least the following beneficial effects: through the cooperation between the main body section, the mating end and the connecting end, they can be inserted and matched with the insulator, the mating end cooperates with the docking terminal, and the connecting end cooperates with the object to achieve electrical signal connection; through the cooperation between the connecting end and the limiting matching part, the main body section is prevented from rotating relative to the insulator, thereby ensuring the stability between the anti-rotation connection terminal and the insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of the electrical connector of the utility model;

[0018] Figure 2 An exploded view of the electrical connector of the present utility model;

[0019] Figure 3 for Figure 2 An enlarged view of section A is shown;

[0020] Figure 4 It is a cross-sectional view of the electrical connector of the present utility model.

[0021] The meanings of the symbols in the accompanying drawings are:

[0022] Insulator-1; first plug-in cavity-11; closing section-111; installation cavity-12; movable block-13; second plug-in cavity-14; movable cavity-15; insulating sub-body-16; slot-17; anti-rotation connection terminal-2; main body section-21; drainage hole-211; mating end-22; second annular shell wall-221; slit-2211; spring sheet-2212; second through cavity-222; third annular shell wall-223; insertion port-224; connection end-23; arc-shaped half shell-231; limit mating portion-232; extension piece-233; convex hump-234. DETAILED DESCRIPTION

[0023] The utility model will be further described below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 4 As shown, the electrical connector of the utility model includes an insulator 1 and an anti-rotation connection terminal 2 installed on the insulator 1. The insulator 1 is used to protect the anti-rotation connection terminal 2 and prevent electricity. The anti-rotation connection terminal 2 is used to conduct when the electrical connector is matched with the mating electrical connector, thereby realizing circuit connection.

[0025] The insulator 1 is made of insulating material and has an overall cylindrical structure. A first plug-in cavity 11 penetrating the insulator 1 is provided along the central axis of the insulator 1. The shape of the first plug-in cavity 11 is adapted to the anti-rotation connection terminal 2, and the anti-rotation connection terminal 2 is inserted therein to complete the plug-in fit. The end faces of the insulator 1 are respectively defined as a first surface and a second surface, and the second surface is used to face the docking electrical connector. A mounting cavity 12 is recessed on the first surface of the insulator 1. The mounting cavity 12 is open on one side away from the second surface. The mounting cavity 12 is preferably in a cylindrical structure. A movable piece 13 is detachably connected to the mounting cavity 12. The movable piece 13 can be inserted into the mounting cavity 12 along the central axis to facilitate the removal of the movable piece 13. The movable piece 13 can also be screwed to the inner wall of the mounting cavity 12 along the central axis of the insulator 1. Correspondingly, the number of anti-rotation connection terminals 2 needs to be limited to one, so that the rotation of the movable piece 13 affects the setting of the anti-rotation connection terminal 2. A second plug-in cavity 14 is provided on the movable block 13 along the central axis direction for the end of the anti-rotation connection terminal 2 away from the second surface to pass through. The width of the second plug-in cavity 14 is smaller than that of the plug-in cavity, and the second plug-in cavity 14 is arranged opposite to and communicated with the corresponding first plug-in cavity 11. Therefore, the widths of the two ends of the anti-rotation connection terminal 2 are different, and a step is formed between the second plug-in cavity 14 and the first plug-in cavity 11. When installing the anti-rotation connection terminal 2, first remove the movable block 13, and insert the anti-rotation connection terminal 2 into the first plug-in cavity 11, then align the second plug-in cavity 14 on the movable block 13 with the other end of the anti-rotation connection terminal 2 and move toward it until the end of the anti-rotation connection terminal 2 is inserted into the second plug-in cavity 14. A limiting surface is formed on the inner wall of the second plug-in cavity 14. When the anti-rotation connection terminal 2 is installed in the second plug-in cavity 14, the limiting surface cooperates with the anti-rotation connection terminal 2 to prevent the anti-rotation connection terminal 2 from rotating relative to the insulator 1, thereby greatly improving its stability. A fork groove is provided on the outer side wall of the insulator 1 in a direction parallel to the central axis and passes through the second surface, so as to facilitate the docking and limiting of the docking electrical connector.

[0026] In the utility model, an external thread is provided on the outer wall of the insulator 1 and is used for threaded connection with an object such as a circuit board. Therefore, when the electrical connector is connected to the corresponding external component, the insulator 1 needs to be rotated, which will affect the cooperation between the anti-rotation connection terminal 2 and the docking terminal, causing the anti-rotation connection terminal 2 to twist and deform. To this end, an active cavity 15 penetrating the insulator 1 is provided on the inner side wall of the mounting cavity 12 of the insulator 1, and an insulating sub-body 16 plugged into the active cavity 15 is formed in the active cavity 15. The shape of the insulating sub-body 16 and the shape of the mounting cavity 12 are consistent with the cavity shape of the active cavity 15 and are both cylindrical structures. The mounting cavity 12 and the active cavity 15 are coaxial and have the same diameter. A side of the insulating sub-body 16 away from the movable block 13 and a side of the insulator 1 facing the mating electrical connector are jointly defined as a second surface. The first plug-in cavity 11 is formed on the insulating sub-body 16 and passes through the insulating sub-body 16. In order to limit the anti-rotation connecting terminal 2 from passing through the second surface, a closing section 111 is formed on the side of the first plug-in cavity 11 close to the second surface. The diameter of the closing section 111 is smaller than the diameter of the first plug-in cavity 11 and is adapted to the mating terminal so that the mating terminal can pass through. During installation, one end of the anti-rotation connecting terminal 2 can be inserted into the first plug-in cavity 11, and the other end of the anti-rotation connecting terminal 2 is passed out of the first plug-in cavity 11. After the movable piece 13 is aligned with the anti-rotation connecting terminal 2, the movable piece 13 is sleeved on the anti-rotation connecting terminal 2 so that the other end of the anti-rotation connecting terminal 2 passes through the second plug-in cavity 14 and passes out of the second plug-in cavity 14 toward the side away from the insulating sub-body 16; at this time, the movable piece 13 and the insulating sub-body 16 are connected together through the anti-rotation connecting terminal 2, and then the insulating sub-body 16 and the movable piece 13 are moved toward the installation cavity 12 and the movable cavity 15 along the central axis direction of the insulator 1 until the insulating sub-body 16 and the movable piece 13 are installed in place, thereby completing the assembly of the electrical connector and the anti-rotation connecting terminal 2 and the threaded connection between the electrical connector and the mating electrical connector. A plurality of teeth are provided along the circumferential direction on the outer periphery of the first surface of the insulator 1, and the first plug-in cavity 11, the second plug-in cavity 14 and the anti-rotation connection terminal 2 are all provided in multiple and consistent numbers, wherein a first plug-in cavity 11 and a second plug-in cavity 14 are formed through at the center of the circle of the sub-first surface, and the other first plug-in cavities 11 and second plug-in cavities 14 are distributed in a circular array around the center of the circle.

[0027] like Figures 1 to 4As shown, the anti-rotation connection terminal 2 of this embodiment is made of conductive metal, and the anti-rotation connection terminal 2 includes a main body section 21, a mating end 22 extending from one end of the main body section 21 along the central axis and used for plugging and mating with the docking terminal, and a connecting end 23 extending from the other end of the main body section 21 along the central axis and electrically connected to the object. The main body section 21 and the mating end 22 are both inserted into the first plug-in cavity 11, and the mating end 22 abuts against the inner wall of the first plug-in cavity 11 close to the closing section 111, and the connecting end 23 passes through the second plug-in cavity 14 and passes out of the second plug-in cavity 14, and the connecting end 23 is limitedly matched with the limiting surface plane. It should be noted that the object of this embodiment refers to a cable, and it should be noted that the object is not limited to a cable, for example, the object can also be a circuit board, etc.

[0028] In this embodiment, the main body section 21 has a first annular shell wall and a first through cavity 212 that penetrates along the central axis direction, so that the main body section 21 is a circular tubular structure with both ends penetrated, and the diameter of the main body section 21 is adapted to the first plug-in cavity 11 so that it can be inserted therein. The first annular shell wall is provided with a drainage hole 211 that penetrates along its radial direction so that the electroplating liquid can be discharged when the anti-rotation connecting terminal 2 is subjected to the electroplating process.

[0029] In this embodiment, the mating end 22 has a second annular shell wall 221, a second through cavity 222 penetrating the second annular shell wall 221 along the central axis direction, a third annular shell wall 223 formed on the end of the second annular shell wall 221 away from the first annular shell wall, and an insertion port 224 penetrating the third annular shell wall 223 along the central axis direction. The second annular shell wall 221 and the third annular shell wall 223 are both integrally formed with the first annular shell wall and have the same diameter to facilitate insertion into the first plug-in cavity 11. The first through cavity 212, the second through cavity 222 and the insertion port 224 are connected in sequence, and the docking terminal can be inserted into the insertion port 224, the second through cavity 222 and the first through cavity 212 after passing through the closing section 111, thereby achieving conduction. The second annular shell wall 221 is formed by extending from the first annular shell wall along the central axis direction, and the third annular shell wall 223 is formed by extending from the second annular shell wall 221 along the central axis direction. A plurality of slits 2211 are arranged on the second annular shell wall 221, and the plurality of slits 2211 are distributed in the second annular shell wall 221 at intervals along the circumferential direction. The length direction of each slit 2211 is distributed along the central axis direction and penetrates the second annular shell wall 221 in the radial direction. The portion between each two adjacent slits 2211 on the second annular shell wall 221 forms a spring piece 2212 that is in elastic contact with the docking terminal. Each spring piece 2212 is in the shape of a long strip. A plurality of spring pieces 2212 are enclosed outside the second through cavity 222 to form an elastic matching cavity. The elastic matching cavity is plug-matched with the docking terminal. After the docking terminal is inserted into the elastic matching cavity, it can be elastically matched with it to achieve conduction while limiting the movement of the docking terminal to a certain extent. In the content defined in this embodiment, at least one spring piece 2212 is defined as an inner curved piece that curves inwardly in the radial direction, and the inner curved piece makes the radial dimension of the middle section of the elastic matching cavity enclosed by it smaller than the radial dimension of the two ends, and the middle section of the inner curved piece can elastically abut against the outer periphery of the docking terminal that is plugged in and fits in it, so as to press against the docking terminal. Preferably, the middle section of each spring piece 2212 curves inwardly in the corresponding radial direction, so that the diameter of the two ends of the elastic matching cavity is larger than the diameter of the middle section, and the middle diameter of the elastic matching end 22 is smaller than the diameter of the docking terminal, and the docking terminal is usually a round pin-shaped terminal, and the docking terminal achieves an elastic tight fit with the matching end 22 by squeezing the elastic matching cavity after passing through the insertion port 224.

[0030] In this embodiment, the connecting end 23 has an arcuate half shell 231 connected to the first annular shell wall and a limiting fitting portion 232 arranged on the first annular shell wall for limiting the rotation of the main body section 21 by fitting with the second insertion cavity when installed in the insulator 1. The arcuate half shell 231 is inserted into the second insertion cavity 14. The limiting fitting portion 232 and the arcuate half shell 231 cooperate with the second insertion cavity 14 to prevent the main body section 21 from rotating relative to the insulator 1, thereby improving the stability between the anti-rotation connecting terminal 2 and the insulator 1 and ensuring the safety of conductive conduction.

[0031] In this embodiment, the arcuate half shell 231 is formed by extending the first annular shell wall along the central axis direction and is half of the first annular shell wall divided in half along the central axis direction. The cross-section of the arcuate half shell 231 in the axial direction is arc-shaped. The lateral sides of the arcuate half shell 231 are its long sides, the two long sides are flush, and an extension piece 233 is provided on each of the two long sides. The extension piece 233 and the arcuate half shell 231 are integrally formed. The connection between the extension piece 233 and the arcuate half shell 231 is bent and the extension piece 233 is inclined inwardly, and the two extension pieces 233 are arranged at intervals. The two extension pieces 233 can extend horizontally relative to each other, or bend inwardly at different angles and be stacked. The two extension pieces 233 and the arcuate half shell 231 are arranged to form a semicircular (semi-cylindrical) connecting cavity for external objects to pass through. The extension piece 233 can, to a certain extent, press against the object such as a cable to restrict the object. In this embodiment, in order to further press against the object, a convex hump 234 located in the connecting cavity is provided on the upper shell wall of the arc-shaped half shell 231 and protrudes inwardly. The convex hump 234 cooperates with the extending piece 233 to further press against the object.

[0032] The limiting mating portion 232 is limited to a mating plane formed on the connecting end 23, and the side surface of the extension piece 233 facing away from the convex bump 234 and the surface where the two long sides of the arc-shaped half shell 231 are located are defined as a mating plane. The corresponding second plug-in cavity 14 also has a semicircular cross-section and can limit its rotation after the connecting end 23 is inserted into it.

[0033] The working method of one embodiment of the anti-rotation connecting terminal 2 and the electrical connector of the utility model is as follows: first, the insulating sub-body 16 is inserted into the movable cavity 15 and aligned with the docking structure on the electrical connector, and then the mating end 22 and the main body section 21 are inserted into the first plug-in cavity 11, and after the mating end 22 is elastically matched with the docking terminal, the movable block 13 is aligned with the connecting end 23 and inserted into the installation cavity 12, thereby completing the assembly.

Claims

1. An anti-rotation connection terminal, characterized in that: It includes a main body section, a mating end extending from one end of the main body section along the central axis and used for plugging and mating with a docking terminal, and a connecting end extending from the other end of the main body section along the central axis and electrically connected to an object, wherein the connecting end is provided with a limiting mating portion for limiting the rotation of the main body section when installed in an insulator and cooperating with the insulator.

2. The anti-rotation connecting terminal according to claim 1, characterized in that: The main body section has a first annular shell wall and a first through cavity penetrating along the central axis direction. The first annular shell wall is provided with a drainage hole penetrating along the radial direction thereof.

3. The anti-rotation connecting terminal according to claim 2, characterized in that: The mating end has a second annular shell wall and a second through cavity extending along the central axis. The second annular shell wall is provided with a plurality of slits, which are distributed on the second annular shell wall at intervals along the circumferential direction. Each of the slits is distributed along the central axis and extends through the second annular shell wall in the radial direction. The portion of the second annular shell wall located between each two adjacent slits forms a spring sheet that elastically contacts the docking terminal. The plurality of spring sheets are enclosed outside the second through cavity to form an elastic mating cavity, which is plugged into and mated with the docking terminal.

4. The anti-rotation connecting terminal according to claim 3, characterized in that: At least one of the elastic sheets is defined as an inwardly curved sheet that curves radially inwardly, and the radial dimension of the middle section of the elastic matching cavity enclosed by the inwardly curved sheet is smaller than the radial dimension of the two ends, so that it can elastically resist the outer periphery of the docking terminal that is plugged in and matched therein.

5. The anti-rotation connecting terminal according to claim 3, characterized in that: The mating end also has a third annular shell wall formed on the second annular shell wall at one end away from the first annular shell wall and an insertion port penetrating along the central axis direction.

6. The anti-rotation connecting terminal according to claim 4, characterized in that: The position-limiting mating portion is defined as a mating plane formed on the connecting end, and the mating plane is limited by a position-limiting plane in the insulating body.

7. The anti-rotation connecting terminal according to claim 6, characterized in that: The connecting end has an arc-shaped half shell connected to the first annular shell wall, and an extension piece is arranged on both lateral sides of the arc-shaped half shell. The surface where the extension piece and the lateral sides of the arc-shaped half shell are located is defined as the matching plane, and the two extension pieces and the arc-shaped half shell are arranged to form a semicircular connecting cavity.

8. The anti-rotation connecting terminal according to claim 7, characterized in that: A convex hump located in the connecting cavity is convexly provided inwardly on the shell wall of the arc-shaped half shell.

9. An electrical connector, comprising an insulator and the anti-rotation connecting terminal according to any one of claims 1 to 8 mounted on the insulator.

10. The electrical connector according to claim 9, wherein: The insulator is provided with a first plug-in cavity penetrating the insulator along the central axis direction, and the anti-rotation connection terminal is inserted therein; A mounting cavity is recessed on the first surface of the insulator, a movable block is detachably connected in the mounting cavity, and a second plug-in cavity is opened on the movable block along the central axis direction for the connecting end of the anti-rotation connecting terminal to pass through and to engage with the limiting engaging portion.

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