Static contact connector

Abstract

The utility model discloses a static contact connector, which relates to the technical field of electrical switches and comprises a static contact, a moving contact, a protective cover, a torsion spring, an insulating cylinder and a guide rod, the protective cover is arranged in the insulating cylinder, the torsion spring is arranged on the protective cover, the static contact is arranged on the torsion spring, and the guide rod is arranged on the insulating cylinder. One end of the torsion spring abuts against the protective cover, the other end of the torsion spring abuts against the static contact, the moving contact is arranged at the end, away from the torsion spring, of the protective cover, through holes are formed in the two ends of the protective cover, and the guide rod penetrates through the through holes to be arranged on the insulating cylinder. The side face of the protective cover is of a multi-fold structure and is used for being compressed and stretched, the guide rod and the torsion spring are combined, limiting and positioning of the contacts are achieved, the plum-blossom-shaped static contact and the plum-blossom-shaped moving contact are tightly attached, and the optimal effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical switch technical field especially relates to a static contact connector. BACKGROUND

[0002] The static contact, also known as the static contact point, is a key component in the field of power engineering, mainly applied in power equipment such as switches, relays and contactors, the static contact is usually installed on the contactor body, the position is relatively fixed, according to different application requirements, the static contact can adopt rigid structure or flexible structure. The static contact of rigid structure remains stationary during work, while the static contact of flexible structure moves a tiny distance forward after contacting with the moving contact point to generate necessary contact pressure, the main function of the static contact is to realize the fixation and protection of electrical connection, it can connect the internal circuit of the equipment with the external power supply to provide stable and reliable power supply for the equipment, in high-voltage switches, the connection and disconnection of the static contact is the key to realize the safe operation of high-voltage transmission and transformation network, the static contact connector is a device used to connect the static contact and other parts of the circuit, it can realize stable connection of the circuit and transmission of current, in the power system, the static contact connector usually works with the moving contact, and realizes the on-off of the circuit through contact and separation.

[0003] The patent with publication date of June 14, 2024 and publication number CN221150425U discloses a static contact connector, which comprises a bottom plate, a fixing seat and a supporting seat, the top end of the bottom plate is fixed with the fixing seat, the inside of the fixing seat is provided with a fixing structure, the top end of the bottom plate is fixed with the supporting seat, the outside of the supporting seat is provided with a protection structure, the fixing structure comprises a plug rod, a pressing plate, a spring, a buckle and a clamping groove, the plug rod is inserted in the inside of the fixing seat, and the inside of the plug rod on both sides is provided with a clamping groove. The utility model provides a static contact connector, by inserting the plug rod through the connecting piece and the static contact into the fixing seat, then the buckle is inserted into the inside of the clamping groove, and the pressing plate pushes the connecting piece and the static contact to be connected and fixed, thereby realizing the convenient fixing function of the device, conveniently connecting and fixing the static contact and the connecting piece, reducing the time wasted by rotating the bolt, and enhancing the convenience of the device.

[0004] In a vacuum circuit breaker, the contact and separation of the static contact and the moving contact realize the on-off of the circuit. In order to ensure the contact and stability between the static contact and the moving contact, the static contact and the moving contact are often designed as a plum blossom shape, so as to increase the contact area between the contacts, help the uniform distribution of the current between the contacts, reduce the local overheating and the generation of arc, and have the advantages of strong adaptability to load changes of a power system and acceleration of arc movement and extinction. However, in the connecting process of the moving contact and the static contact, the plum blossom-shaped contacts may not be mutually attached due to inaccurate positioning, so that the target effect cannot be achieved. The static contact connector can play a role in guiding and positioning. The above scheme considers that the static contact connector is convenient to install and fix and is applied to an indoor switch socket, but cannot be applied to the field of circuit breakers and cannot play a role in accurate positioning.

[0005] Therefore, it is necessary to provide a static contact connector. Invention content

[0006] The static contact connector provided by the embodiments of the present application can improve the problem in the related art that the plum blossom-shaped contacts cannot be mutually attached due to inaccurate positioning, so that the target effect cannot be achieved.

[0007] The static contact connector provided by the embodiments of the present application includes a static contact, a moving contact, a protective cover, a torsion spring, an insulating cylinder and a guide rod. The protective cover is arranged inside the insulating cylinder. The torsion spring is arranged on the protective cover. The static contact is arranged on the torsion spring. One end of the torsion spring abuts against the protective cover, and the other end abuts against the static contact. The moving contact is arranged on one end of the protective cover away from the torsion spring. Both ends of the protective cover are provided with through holes. The guide rod is arranged on the insulating cylinder through the through holes. The side surface of the protective cover is a multi-crease structure for being compressed and stretched.

[0008] In the connecting process of the moving contact and the static contact, the moving contact is close to the static contact. Under the limiting action of the guide rod, the moving contact will not be deviated. The connecting line of the center points of the moving contact and the static contact is always perpendicular to the plane of both ends of the insulating cylinder. After the moving contact contacts the static contact, the torsion spring is compressed. The spring reacts on the static contact. The static contact is slightly rotated to realize the close attachment with the moving contact.

[0009] The technical scheme described above in the embodiments of the present application has at least the following technical effects: The guide rod makes the compression and stretching of the protective cover only along one axis, so that the centers of the moving contact and the static contact are always on the same straight line. The torsion spring makes the static contact be able to be rotated and at the same time provides a reaction force after being compressed, so that the static contact is closely attached to the moving contact, thereby maximizing the role of the plum blossom-shaped contacts.

[0010] In some embodiments, the two ends of the protective cover are hollow cylinders, a circular ring is arranged on the hollow cylinder, the circular ring is connected by a wavy multi-pleated side wall, a through hole is formed on the circular ring, and the guide rod is arranged on the insulating cylinder through the through hole.

[0011] In some embodiments, the guide rod is in a vertical relationship with the circular ring, and the circular ring is in a parallel relationship with the planes where the two ends of the insulating cylinder are located.

[0012] In some embodiments, the torsion spring is sleeved with a limiting cylinder, and the inner diameter of the limiting cylinder is as large as the outer diameter of the torsion spring.

[0013] In some embodiments, the bottom surface of the static contact is circular, the diameter of the static contact is as large as the outer diameter of the torsion spring, and the moving contact is consistent in size with the static contact.

[0014] In some embodiments, a limiting ring is arranged on the guide rod, and the limiting ring is in abutment with the circular ring.

[0015] In some embodiments, a threaded line is formed on the guide rod and inside the limiting ring, the limiting ring is threadedly connected with the guide rod, and the limiting ring is used to limit the maximum degree of stretching of the protective cover. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 A schematic diagram of the overall structure of a static contact connector is provided for the embodiments of the present application;

[0018] Figure 2 A schematic diagram of the cross-sectional structure of a static contact connector is provided for the embodiments of the present application;

[0019] Figure 3 An exploded schematic diagram of a static contact connector is provided for the embodiments of the present application.

[0020] In the drawings, various reference signs represent:

[0021] 1, static contact; 2, moving contact; 3, protective cover; 4, torsion spring; 5, insulating cylinder; 6, guide rod; 7, hollow cylinder; 8, side wall; 9, circular ring; 10, limiting ring. DETAILED DESCRIPTION

[0022] Based on this, in order to improve the problem in the related art that due to inaccurate positioning, the star-shaped contact cannot be matched with each other, thereby failing to achieve the target effect, the embodiments of the present application provide the following solutions.

[0023] Please refer to Figures 1-3 , including static contact 1, moving contact 2, protective cover 3, torsion spring 4, insulating cylinder 5 and guide rod 6, the protective cover 3 is bonded inside the insulating cylinder 5, the torsion spring 4 is arranged on the protective cover 3, the static contact 1 is arranged on the torsion spring 4, one end of the torsion spring 4 abuts against the protective cover 3, the other end abuts against the static contact 1, the moving contact 2 is fixedly connected on the end of the protective cover 3 away from the torsion spring 4, both ends of the protective cover 3 are provided with through holes, the guide rod 6 is arranged on the insulating cylinder 5 through the through holes, the side surface of the protective cover 3 is a multi-crease structure for being compressed and stretched.

[0024] In this way, the side surface of the protective cover 3 is a multi-crease structure, so that the protective cover 3 can be stretched and compressed, and at the same time, the static contact 1 and the moving contact 2 are always located inside the protective cover. During the connection of the moving contact 2 and the static contact 1, the moving contact 2 is close to the static contact 1, and under the limiting action of the guide rod 6, the compression and stretching of the protective cover 3 can only be along one axis, so that the moving contact 2 will not be deviated, and the center line of the moving contact 2 and the static contact 1 is always perpendicular to the plane of both ends of the insulating cylinder 5. When the moving contact 2 contacts the static contact 1, the torsion spring 4 is extruded, the spring is compressed, and the spring reacts on the static contact 1, so that the static contact 1 is tightly matched with the moving contact 2, and at the same time, the static contact 1 is slightly rotated to realize the tight matching with the moving contact 2.

[0025] Optionally, in some embodiments, please refer to Figure 2 , both ends of the protective cover 3 are hollow cylinders 7, the hollow cylinders 7 are bonded with annular rings 9, the annular rings 9 are connected with wave-shaped multi-crease side walls 8, the annular rings 9 are provided with through holes, and the guide rod 6 is fixedly connected on the insulating cylinder 5 through the through holes.

[0026] In this way, the through holes in the annular rings 9 are used for the guide rod 6 to pass through the through holes, so as to limit the compression and stretching of the protective cover 3, and the wave-shaped multi-crease side walls 8 enable the protective cover 3 to be stretched and contracted. When the protective cover 3 is stretched and contracted, the relative positions of the cylinders and the annular rings 9 do not change. The position of the cylinder and the annular ring 9 at the end of the protective cover 3 connected with the insulating cylinder 5 is fixedly unchanged, and the relative position of the cylinder and the annular ring 9 at the end of the protective cover 3 not connected with the insulating cylinder 5 will not change, but they will move in the direction of the guide rod 6 along with the stretching or compression of the protective cover 3. The hollow state of the cylinder is used for placing the torsion spring 4 and the moving contact 2.

[0027] Optionally, in some embodiments, referring to Figure 3 , the guide rod 6 is perpendicular to the circular ring 9, and the circular ring 9 is parallel to the planes where the two ends of the insulating cylinder 5 are located.

[0028] In this way, the moving contact 2 and the static contact 1 are respectively arranged at the two ends of the protective cover 3. When the protective cover 3 is stretched and contracted, one end of the protective cover 3 moves along the direction of the guide rod 6 under the action of the guide rod 6, so that the planes where the two ends of the protective cover 3 are located are always parallel, and the center point connecting line is always on a straight line, avoiding the situation that the moving contact 2 and the static contact 1 are not tightly fitted due to non-parallelism.

[0029] Optionally, in some embodiments, referring to Figure 3 , the torsion spring 4 is sleeved with the hollow cylinder 7, and the inner diameter of the hollow cylinder 7 is as large as the outer diameter of the torsion spring 4.

[0030] In this way, the torsion spring 4 is compressed and stretched within the range defined by the hollow cylinder 7, which limits the torsion spring 4, avoiding the situation that the contact between the static contact 1 and the moving contact 2 is dislocated due to left and right shaking of the torsion spring 4.

[0031] Optionally, in some embodiments, referring to Figure 2 and Figure 3 , the bottom surface of the static contact 1 is circular, the diameter of the static contact 1 is as large as the outer diameter of the torsion spring 4, the moving contact 2 is the same size as the static contact 1, and part of the static contact 1 is located in the hollow cylinder 7 in the case of disconnection.

[0032] In this way, the circular bottom surface of the static contact 1 can better contact the torsion spring 4, and at the same time, the shape of the hollow cylinder 7 is matched, and the static contact 1 is limited by the hollow cylinder 7 and cannot be deviated in position. The diameter of the static contact 1 is consistent with the outer diameter of the torsion spring 4, which maximizes the contact area between the torsion spring 4 and the static contact 1. The moving contact 2 is the same size as the static contact 1, so that when the static contact 1 is connected with the moving contact 2, there is no extra part exposed.

[0033] Optionally, in some embodiments, referring to Figure 1 and Figure 2 , the guide rod 6 is provided with a limiting ring 10, the limiting ring 10 abuts against the circular ring 9, and the guide rod 6 and the inside of the limiting ring 10 are both provided with screw threads, the limiting ring 10 is threadedly connected with the guide rod 6, and is used for limiting the maximum degree of stretching of the protective cover 3.

[0034] Thus, by opening thread lines on the guide rod 6 and the limiting ring 10, the guide rod 6 is threadedly connected with the limiting ring 10, by rotating the limiting ring 10 clockwise, the limiting ring 10 is moved on the guide rod 6 to the protective cover direction, thereby reducing the maximum range of the protective cover 3 stretching, by rotating the limiting ring 10 counterclockwise, the limiting ring 10 is moved on the guide rod 6 to the insulating cylinder 5 direction, thereby increasing the maximum range of the protective cover 3 stretching, and controlling the distance required for the moving contact 2 to contact the static contact 1.

[0035] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stationary contact connector, characterized by: It includes static contact (1), moving contact (2), protective cover (3), torsion spring (4), insulating cylinder (5) and guide rod (6), the protective cover (3) is arranged inside the insulating cylinder (5), the torsion spring (4) is arranged on the protective cover (3), the static contact (1) is arranged on the torsion spring (4), one end of the torsion spring (4) is in abutment with the protective cover (3), the other end is in abutment with the static contact (1), the moving contact (2) is arranged on the end of the protective cover (3) away from the torsion spring (4), both ends of the protective cover (3) are provided with through holes, the guide rod (6) is arranged on the insulating cylinder (5) through the through hole, the side of the protective cover (3) is a plurality of pleats structure, for being compressed and stretched.

2. A stationary contact connector according to claim 1, characterized in that Both ends of the protective cover (3) are hollow cylinders (7), the hollow cylinder (7) is provided with a circular ring (9), the circular ring (9) is connected with a plurality of pleats side wall (8) in wave shape, the circular ring (9) is provided with a through hole, the guide rod (6) is arranged on the insulating cylinder (5) through the through hole.

3. A stationary contact connector according to claim 2, characterized in that The guide rod (6) and the circular ring (9) are in perpendicular relationship, the circular ring (9) and the plane where the both ends of the insulating cylinder (5) are parallel relationship.

4. A stationary contact connector according to claim 3, characterized in that The torsion spring (4) is sleeved with the hollow cylinder (7), the inner diameter of the hollow cylinder (7) is as large as the outer diameter of the torsion spring (4).

5. A stationary contact connector according to claim 4, characterized in that The bottom surface of the static contact (1) is circular, the diameter of the static contact (1) is as large as the outer diameter of the torsion spring (4), the moving contact (2) is consistent with the static contact (1) in size.

6. A stationary contact connector according to claim 5, characterized in that The guide rod (6) is provided with a limiting ring (10), the limiting ring (10) is in abutment with the circular ring (9).

7. A stationary contact connector according to claim 6, characterized in that The guide rod (6) and the limiting ring (10) are provided with thread lines inside, the limiting ring (10) and the guide rod (6) are screw connected, for limiting the maximum degree of stretching of the protective cover (3).

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