Anti-displacement sensor for grounding switch

Abstract

The utility model discloses an anti-displacement sensor for a grounding switch, the anti-displacement sensor for the grounding switch comprises a support frame and a sensor, the support frame is provided with a first fixing hole and a second fixing hole for a bolt to pass through, and the front and the back of the two sides of the first fixing hole and the second fixing hole are respectively provided with a first positioning hole and a second positioning hole. And convex columns are arranged on the two sides of the sensor, and the convex columns are inserted into the first positioning holes or the second positioning holes. The first positioning hole and the second positioning hole are used for adjusting the front-back position of the sensor, the convex column is inserted into any positioning hole, and when a bolt is fastened, the convex column and the convex column form reliable constraint, thereby preventing displacement of the sensor, ensuring centering of moving and static contacts, realizing uniform contact of the contacts, avoiding local overheating and excessive loss of a silver layer, maintaining stable electrical performance of the switch, and reducing faults. Product life is prolonged and operation reliability is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of grounding switch technology, and in particular to a displacement-resistant sensor for grounding switches. Background Technology

[0002] Grounding switches provide crucial grounding protection during the maintenance of high-voltage electrical equipment, ensuring personnel safety; their importance is self-evident.

[0003] According to the authorized publication number CN218866935U, "Sensor for Grounding Switch," a sensor for a grounding switch is disclosed, including a main body and a contact disposed on the upper end of the main body. A connecting seat is integrally formed on the upper end of the main body. One end of the connecting seat is correspondingly disposed on the upper end of the main body, and the other end of the connecting seat has an extension portion extending laterally outward. The extension portion mates with the contact. One end of the connecting seat has a groove. The connecting seat and the contact are fixedly connected by a laterally inserted bolt. The contact includes a threaded hole, and the threaded portion of the bolt mates with the threaded hole, with the head of the bolt placed in the groove. This utility model provides a sensor with a simple structure, relatively low cost, and higher safety performance.

[0004] The above technical solution has the following defects: As can be seen from the attached figure, the sensor is fixed to the grounding switch by bolts. However, during the tightening of the nut, the sensor is prone to displacement, causing its contacts to deviate from the predetermined position and fail to be precisely aligned with the moving contact of the switch, resulting in a centering deviation. This deviation causes uneven force when the moving contact and the stationary contact are in contact, concentrating on one side of the contact. This causes the silver layer on that side to be rapidly consumed due to excessive friction, significantly shortening the overall service life of the contact. At the same time, the increased contact and friction on one side also causes a rise in local contact resistance, resulting in severe heat generation, which will affect the electrical performance and long-term operational stability of the switch.

[0005] Therefore, the applicant has made beneficial designs and found a way to solve the above problems. The technical solution to be introduced below is generated in this context. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the above-mentioned technical solutions and provide a product that is anti-displacement and has good centering.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A displacement-preventing sensor for a grounding switch includes a support frame and a sensor. The support frame has a first fixing hole and a second fixing hole for bolts to pass through. The first fixing hole and the second fixing hole have a first positioning hole and a second positioning hole on the front and back sides respectively to prevent the sensor from shifting when fixed. The sensor has protruding posts on both sides and is inserted into the first positioning hole or the second positioning hole.

[0009] Preferably, the first positioning hole and the second positioning hole, and the first fixing hole and the second fixing hole partially overlap and are interconnected.

[0010] Preferably, the sensor has a connecting part facing one side of the sensor, the connecting part has a conductive plate, the conductive plate has a stationary contact, the stationary contact has protrusions on both sides, and the conductive plate has a plurality of mounting holes.

[0011] Preferably, the back of the connecting part is provided with a connecting groove, and the connecting groove is provided with a fastening screw and threadedly connected to the conductive plate.

[0012] Preferably, the support frame is provided with a rotatable main shaft, the main shaft is provided with an actuating arm, and the two sides of the actuating arm are provided with moving contacts corresponding to the stationary contacts.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention adjusts the sensor's position by using a first positioning hole and a second positioning hole. When the protruding pins are inserted into their corresponding positioning holes, during bolt tightening, the protruding pins and the sidewalls of the positioning holes form reliable axial and radial constraints. This structural design effectively prevents sensor displacement during installation and ensures alignment between the stationary and moving contacts. Consequently, the stationary and moving contacts achieve a more uniform and comprehensive contact surface, avoiding pressure concentration at a single point or on one side. This not only effectively prevents localized abnormal heating caused by poor contact but also significantly reduces excessive wear of the silver layer on the contact surface due to uneven friction. This stable and uniform contact helps maintain the long-term electrical performance stability of the switch, reduces potential failure points during operation, extends the overall product lifespan, and ensures the reliability of equipment operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a displacement-resistant sensor for a grounding switch according to the present invention;

[0017] Figure 2 This is a schematic diagram of the bottom structure of a displacement-resistant sensor for a grounding switch according to the present invention;

[0018] Figure 3 This utility model Figure 2 A partial enlarged view A of a displacement-resistant sensor for a grounding switch;

[0019] Figure 4 This is an exploded structural diagram of a displacement-resistant sensor for a grounding switch according to the present invention;

[0020] Figure 5 This is a schematic diagram of the support frame for an anti-displacement sensor used in a grounding switch according to the present invention.

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] Reference numerals: 1. Support frame; 2. Sensor; 3. Bolt; 4. Conductive plate; 5. Spindle; 6. Actuating arm; 7. Moving contact; 11. First fixing hole; 12. Second fixing hole; 13. First positioning hole; 14. Second positioning hole; 21. Protrusion; 22. Connecting part; 23. Connecting groove; 24. Fastening screw; 41. Stationary contact; 42. Protrusion; 43. Mounting hole. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Reference example Figures 1 to 5A grounding switch anti-displacement sensor includes a support frame 1 and a sensor 2. The support frame 1 is provided with a first fixing hole 11 and a second fixing hole 12 for a bolt 3 to pass through. The first fixing hole 11 and the second fixing hole 12 are respectively provided with a first positioning hole 13 and a second positioning hole 14 on the front and back sides to prevent the sensor 2 from displacing when fixed. The sensor 2 is provided with protruding posts 21 on both sides and inserted into the first positioning hole 13 or the second positioning hole 14.

[0027] The sensor 2 is adjusted in the front and rear positions through the first positioning hole 13 and the second positioning hole 14. When the protrusion 21 is inserted into the corresponding positioning hole, during the tightening of the bolt 3, the protrusion 21 and the side wall of the positioning hole form a reliable axial limit and radial constraint. This structural design effectively prevents the sensor 2 from shifting during the installation and fixing stage, and ensures the alignment between the stationary contact 41 and the moving contact 7. As a result, the moving and stationary contacts 41 can achieve a more uniform and comprehensive contact surface when they contact each other, avoiding the concentration of contact pressure at a single point or on one side. This not only effectively prevents local abnormal heating caused by poor contact, but also significantly reduces the excessive wear of the silver layer on the contact surface caused by uneven friction. This stable and uniform contact state helps to maintain the long-term electrical performance stability of the switch, reduces potential failure points during operation, thereby extending the service life of the entire product and ensuring the reliability of equipment operation.

[0028] It is worth mentioning that the first positioning hole 13 and the second positioning hole 14, and the first fixing hole 11 and the second fixing hole 12 partially overlap and are interconnected. After the positioning holes partially overlap, the protrusion 21 will not be displaced when it is inserted into the first positioning hole 13 or the second positioning hole 14, and it will not enter the other positioning hole. The protrusion 21 will be provided with a chamfered surface to help it enter the positioning hole. Since this is a conventional design in the industry, it is described here.

[0029] It is worth mentioning that the sensor 2 is provided with a connecting part 22 facing one side of the sensor 2. The connecting part 22 is provided with a conductive plate 4. The conductive plate 4 is provided with a stationary contact 41. The stationary contact 41 is provided with protrusions 42 on both sides. The conductive plate 4 is provided with a plurality of mounting holes 43. The protrusions 42 enhance the physical contact area with the moving contact 7, improve the tightness of the contact, and help reduce the resistance of the contact area. At the same time, the mounting holes 43 provide an area for electrical connection with the power supply or other electrical equipment.

[0030] It is worth mentioning that the back of the connecting part 22 is provided with a connecting groove 23, and the connecting groove 23 is provided with a fastening screw 24, which is threaded to the conductive plate 4;

[0031] It is worth mentioning that the support frame 1 is provided with a rotatable main shaft 5, the main shaft 5 is provided with an actuating arm 6, and the two sides of the actuating arm 6 are provided with moving contacts 7 corresponding to the stationary contact 41.

[0032] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A displacement-resistant sensor for a grounding switch, comprising a support frame (1) and a sensor (2), characterized in that: The support frame (1) is provided with a first fixing hole (11) and a second fixing hole (12) for the bolt (3) to pass through. The first fixing hole (11) and the second fixing hole (12) are respectively provided with a first positioning hole (13) and a second positioning hole (14) on the front and back sides to prevent the sensor (2) from shifting when fixed. The sensor (2) is provided with protruding posts (21) on both sides and inserted into the first positioning hole (13) or the second positioning hole (14).

2. The anti-displacement sensor for grounding switches according to claim 1, characterized in that: The first positioning hole (13) and the second positioning hole (14), and the first fixing hole (11) and the second fixing hole (12) partially overlap and are interconnected.

3. The anti-displacement sensor for grounding switches according to claim 1, characterized in that: The sensor (2) is provided with a connecting part (22) facing one side of the sensor (2). The connecting part (22) is provided with a conductive plate (4). The conductive plate (4) is provided with a stationary contact (41). The stationary contact (41) is provided with protrusions (42) on both sides. The conductive plate (4) is provided with a plurality of mounting holes (43).

4. The anti-displacement sensor for grounding switches according to claim 3, characterized in that: The back of the connecting part (22) is provided with a connecting groove (23), and the connecting groove (23) is provided with a fastening screw (24) and is threaded to the conductive plate (4).

5. The anti-displacement sensor for grounding switches according to claim 3, characterized in that: The support frame (1) is provided with a rotatable main shaft (5), the main shaft (5) is provided with an actuating arm (6), and the actuating arm (6) is provided with moving contacts (7) corresponding to the stationary contacts (41) on both sides.

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