Relay protection maintenance terminal

Abstract

The utility model discloses a relay protection maintenance terminal, which relates to the technical field of connectors, aims to solve the technical problems of poor contact and even disconnection and influence on the protection effect caused by the loosening and even slipping of a lead and a terminal or a terminal and a terminal strip, and comprises a connecting terminal for connecting the terminal strip and the lead, according to the utility model, the connection terminal structure formed by combining the wiring piece and the connection end part can be conveniently connected with the terminal strip, and the elastic pressing sheet structure which is designed to be inclined upwards at the top of the connector can be extruded to change the angle when the screw limiting piece moves downwards; therefore, the fitting degree between the screw rod limiting piece and the screw rod limiting piece can be improved under the elastic acting force, the screw rod limiting piece can be automatically attached when loosing and moving upwards, and the advantages of stable connection and high limiting strength are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more particularly to a relay protection maintenance terminal. Background Art

[0002] The relay protector mainly uses the principle of relay protection action to utilize the changes in electrical quantities when short circuits or abnormal conditions occur in components in the power system. There are also other physical quantities, such as the large amount of gas and oil flow rate or the increase in oil pressure intensity generated when a fault occurs in the transformer tank.

[0003] The traditional way of connecting terminals and terminal blocks is to squeeze them by moving the threaded rod after insertion to achieve the effect of fixed connection. The wires and terminals or the terminals and terminal blocks may become loose or even slip, resulting in poor contact or even disconnection, affecting the protection effect. In view of this, we propose a relay protection maintenance terminal. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to actual needs, and provide a relay protection maintenance terminal to solve the problem that the current wires and terminals or terminals and terminal blocks are loose or even slip, resulting in poor contact or even disconnection, which affects the technical problem of protection effect.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a relay protection maintenance terminal, comprising a connecting terminal for connecting a terminal block and a wire, wherein the top thread of the terminal block is provided with a screw limiter connected to the connecting terminal;

[0006] The connecting terminal includes a connecting piece and a connecting end portion connected in one piece, and the connecting end portion is located inside the terminal block;

[0007] The connecting end portion comprises a connecting head, the top of the connecting head is upwardly inclined and is provided with an elastic pressing piece, and the top of the elastic pressing piece is provided with a limiting hole corresponding to the side end of the screw limiting member.

[0008] The connection terminal structure formed by the combination of the wiring member and the connection end of the utility model can be conveniently connected to the terminal block. The elastic pressing piece structure with an upward tilt design on the top of the connecting head can be squeezed to change the angle when the screw limiter moves downward. In this way, the fit between the two can be improved under the elastic force. When the screw limiter loosens and moves upward, the two can automatically come close to each other, maintaining a good extrusion and limiting effect. At the same time, the limiting hole opened on the top of the elastic pressing piece can be connected to the lower end of the screw limiter to improve the limiting effect, further improve the stability of the position of the connecting terminal inside the terminal block, reduce the probability of separation due to vibration or pulling force, effectively enhance the stability of the connection terminal installation, and maintain a good use effect.

[0009] Preferably, the terminal block includes a U-shaped base, and the rear ends of both sides of the base are constructed with clamps with side ends facing each other, and the side ends of the two clamps are fit and connected to the outer surface of the wire, and a partition for bending the wire is constructed between the front ends of both sides of the base.

[0010] Preferably, the top of the elastic pressing sheet is constructed with a guide ring with the same diameter as the bottom and the limiting hole, and the top diameter of the guide ring is larger than the diameter of the limiting hole.

[0011] Preferably, a limiting groove is provided on the side surface of the bottom of the interface of the terminal block, and a limiting block adapted to the limiting groove is fixedly provided on the bottom of the elastic pressing piece.

[0012] Preferably, a limiting sleeve is constructed on the top of the partition, and a limiting cavity is provided on a side of the limiting sleeve close to the wire end.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The connection terminal structure formed by the combination of the wiring member and the connection end of the utility model can be conveniently connected to the terminal block. The elastic pressing piece structure with an upward tilt design on the top of the connecting head can be squeezed to change the angle when the screw limiter moves downward. In this way, the fit between the two can be improved under the elastic force. When the screw limiter loosens and moves upward, it can automatically get close to maintain a good extrusion limiting effect. At the same time, the limiting hole opened on the top of the elastic pressing piece can be connected to the lower end of the screw limiter to improve the limiting effect, further improve the stability of the position of the connecting terminal inside the terminal block, reduce the probability of separation due to vibration or pulling force, effectively enhance the stability of the connection terminal installation, and maintain a good use effect.

[0015] 2. The present invention can further enhance the fixing effect of the connection position of the side end of the wire through the structural design of the terminal. Under the action of the partition, the U-shaped wire end can be set on the upper side of the partition. The bending and extrusion of the clamping plates on both sides can further enhance the limiting effect of the wire end, thereby improving the stability of the connection and further enhancing the strength of the connection between the connecting terminal and the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of a use state of the connecting terminal in the utility model;

[0018] Figure 3 This is a schematic diagram of the cutaway structure of the utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A.

[0020] Explanation of the numbers in the figure: 1. Terminal block; 101. Screw limiter; 102. Limiting groove; 2. Connecting terminal; 3. Wiring member; 301. Base; 302. Clamp; 303. Partition; 304. Limiting sleeve; 4. Connecting end; 401. Connector; 402. Elastic pressing piece; 403. Limiting hole; 404. Guide ring; 405. Limiting block; 5. Wire. DETAILED DESCRIPTION

[0021] like Figures 1 to 4 As shown, the utility model relates to a relay protection maintenance terminal, comprising a connecting terminal block 1 and a connecting terminal 2 for a wire 5, wherein the top thread of the terminal block 1 is provided with a screw limiter 101 connected to the connecting terminal 2; when the connecting terminal 2 enters the interior of the terminal block 1, the screw limiter 101 moves downward to achieve an extrusion limiting effect.

[0022] The connecting terminal 2 includes an integrally connected wiring member 3 and a connecting end portion 4, and the connecting end portion 4 is located inside the terminal block 1. The connecting end portion 4 includes a connecting head 401, and the top of the connecting head 401 is tilted upward with an elastic pressing piece 402, and the top of the elastic pressing piece 402 is provided with a limiting hole 403 corresponding to the side end of the screw limiter 101; the elastic pressing piece 402 designed on the top of the connecting head 401 can tilt downward when pressed down by the screw limiter 101, so that an elastic reset force can be formed, so that when the screw limiter 101 moves upward and loosens, it can automatically rebound and maintain a close state. At the same time, the limiting hole 403 opened on the top can be inserted when the screw limiter 101 moves downward, thereby enhancing the strength of the connection limit and making it difficult to pull the connecting end portion 4 out of the inside of the terminal block 1.

[0023] In an embodiment of the present utility model, the terminal 3 includes a U-shaped base 301, and the rear ends of both sides of the base 301 are constructed with clamps 302 with side ends facing each other, and the side ends of the two clamps 302 are fit and connected to the outer surface of the wire 5, and a partition 303 for bending the wire 5 is constructed between the front ends of both sides of the base 301; a partition layer can be formed by the cooperation between the base 301 and the partition 303, so that the wire end of the wire 5 enters from the opening between the base 301 and the partition 303 and bends to the top of the partition 303, thereby improving the strength of the connection through the bending effect, and then after the clamp 302 bends and squeezes the surface of the wire 5, the limiting effect can be further enhanced, thereby improving the tensile strength of the connection between the connecting terminal 2 and the wire 5.

[0024] In an embodiment of the present invention, the top of the elastic pressing plate 402 is constructed with a guide ring 404 with the same diameter as the bottom diameter and the diameter of the limiting hole 403, and the top diameter of the guide ring 404 is larger than the diameter of the limiting hole 403; the design of the upper diameter of the guide ring 404 being larger than the lower diameter can increase the contact range when the screw limiter 101 moves downward, so that when the connector 401 is not in place, it can be guided to a fixed connection position through the extrusion of the downward movement of the screw limiter 101, thereby achieving the effect of positioning connection.

[0025] In an embodiment of the present utility model, a limiting groove 102 is provided on the bottom side of the interface of the terminal block 1, and a limiting block 405 adapted to the limiting groove 102 is fixedly provided at the bottom of the elastic pressing piece 402; the limiting block 405 can be moved down to the inside of the limiting groove 102 by squeezing and tilting the elastic pressing piece 402 downward, thereby further strengthening the limitation of the installation position of the connecting terminal 2 and improving the strength of the connection between the terminal block 1 and the connecting terminal 2.

[0026] In an embodiment of the present utility model, a limiting sleeve 304 is constructed on the top of the partition 303, and a limiting cavity is opened on the side of the limiting sleeve 304 close to the wire end of the wire 5; by inserting the side end of the wire 5 into the limiting cavity of the limiting sleeve 304, the protection of the wire end can be enhanced and the contact effect can be improved.

[0027] Working principle: This embodiment provides a relay protection maintenance terminal. When in use, first bend one end of the wire 5 and then insert it into the interior of the terminal piece 3 so that the bent end is moved out from the other end of the terminal piece 3. Then, the wire end of the wire 5 can be moved upward, and the bent end can be moved to the top of the partition 303 by pulling back. Then, the wire end is bent to the top of the partition 303 through the opening position of the clamping plates 302 on both sides, so that the wire end can be moved to the inside of the limit sleeve 304. Then, the side ends of the clamping plates 302 on both sides can be bent downward with the help of tools so that the side ends can squeeze the outer wall of the wire 5, thereby further fixing the side end position of the wire 5, completing the connection between the connecting terminal 2 and the wire 5, and then the connecting terminal 2 can be inserted Into the interface of the terminal block 1, after the connection end 4 is partially in place, the screw limiter 101 can be screwed to move it downward and contact the elastic pressing piece 402 protruding from the top of the connector 401. By continuously moving downward, the lower end of the screw limiter 101 can be made to enter the interior of the limiting hole 403. At the same time, during the movement, the elastic pressing piece 402 can be squeezed to tilt downward, so that the limiting block 405 at the bottom of the elastic pressing piece 402 can enter the interior of the limiting groove 102, thereby achieving a double limiting effect, enhancing the stability of the position of the connection end 4 in the terminal block 1. Through such structural coordination, the strength of the connection can be effectively improved, and the connection position can be kept fixed under vibration or pulling force, thereby enhancing the use effect of the structural connection.

[0028] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A relay protection maintenance terminal, characterized in that: A connecting terminal (2) comprising a connecting terminal block (1) and a conducting wire (5), wherein the top thread of the terminal block (1) is provided with a screw stopper (101) connected to the connecting terminal (2); The connecting terminal (2) comprises a connecting piece (3) and a connecting end (4) connected in one piece, and the connecting end (4) is located inside the terminal block (1); The connecting end portion (4) comprises a connecting head (401), the top of the connecting head (401) is upwardly inclined and is provided with an elastic pressing piece (402), and the top of the elastic pressing piece (402) is provided with a limiting hole (403) corresponding to the side end of the screw limiting member (101).

2. The relay protection maintenance terminal according to claim 1, characterized in that: The terminal block (3) comprises a U-shaped base (301), and the rear ends of both sides of the base (301) are each constructed with clamping plates (302) with side ends facing each other, and the side ends of the two clamping plates (302) are bonded and connected to the outer surface of the wire (5), and a partition (303) for bending the wire (5) is constructed between the front ends of both sides of the base (301).

3. The relay protection maintenance terminal according to claim 1, characterized in that: The top of the elastic pressing sheet (402) is constructed with a guide ring (404) having the same diameter as the bottom and the diameter of the limiting hole (403), and the top diameter of the guide ring (404) is larger than the diameter of the limiting hole (403).

4. The relay protection maintenance terminal according to claim 1, characterized in that: A limiting groove (102) is provided on the side surface of the bottom interface of the terminal block (1), and a limiting block (405) adapted to the limiting groove (102) is fixedly provided on the bottom of the elastic pressing piece (402).

5. The relay protection maintenance terminal according to claim 2, characterized in that: A limiting sleeve (304) is constructed on the top of the partition (303), and a limiting cavity is provided on a side of the limiting sleeve (304) close to the end of the wire (5).

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