Capacitor contactor with stable connection

Abstract

The utility model discloses a capacitor contactor with stable connection, which comprises a contactor body, wiring ports arranged at two ends of the contactor body, and fastening screws in threaded connection with the wiring ports, and wire clamping assemblies are arranged at inlets of the wiring ports. The wire clamping assembly comprises a supporting plate, a pressing plate and an insulating plate, the supporting plate is provided with pressure-bearing faces at equal intervals from left to right, guide columns are arranged on the two sides of each pressure-bearing face, the pressing plate and the insulating plate are sequentially arranged on the guide columns in a sliding mode, and a first spring is arranged between the pressing plate and the supporting plate so that a distance can be formed between the pressing plate and the supporting plate. According to the utility model, the fastening screw is rotated to push the insulating plate to move downwards, along with the shortening of the distance between the pressing plate and the insulating plate, the elastic force of the second spring pushes the pressing plate to move downwards and compresses the screw pitch of the first spring, so that the lead is compressed on the pressure-bearing surface, and the product has the advantages of having an anti-dragging function and improving the connection reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to a capacitor contactor with stable connection. Background Art

[0002] A capacitor contactor is an electrical component used to control the connection and disconnection of a capacitor, so that the capacitor can be connected to the line to compensate for reactive power, improve the power factor, and ensure the quality of electric energy. It consists of a contact part, a coil head part, a drive mechanism, a static contact, etc.

[0003] The contact part is usually composed of one or more copper alloy bare contacts, which are used to connect or disconnect the circuit at the on and off positions of the capacitor. The coil head part includes the electromagnetic coil and the magnetic circuit part. The drive mechanism is used to transmit the force of the power signal on the contact or coil to connect or disconnect the contact. The static contact is a fixed contact of the capacitor, which is usually composed of three or more copper alloy contacts.

[0004] When installing or subsequently overhauling the existing capacitor contactor, the staff needs to straighten the wires connected to the capacitor contactor and pull the wires, which causes the connection between the wires and the terminal blocks of the capacitor contactor to become loose. In severe cases, there is a risk that the wires will be detached from the capacitor contactor. Therefore, the applicant has made a useful design and found a solution to the above problem. The technical solution to be introduced below was produced in this context. Summary of the invention

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional capacitor contactor design and provide a product with an anti-pull function and improved connection reliability.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A capacitor contactor with stable connection comprises a contactor body, wiring ports arranged at both ends of the contactor body, and fastening screws threadedly connected to the wiring ports, a wire clamping assembly is arranged at the entrance of the wiring port, the wire clamping assembly comprises a support plate, a pressure plate, and an insulating plate, the support plate is provided with pressure-bearing surfaces with equal spacing from left to right, guide pillars are arranged on both sides of the pressure-bearing surfaces, the pressure plate and the insulating plate are slidably arranged on the guide pillars in sequence, a first spring is arranged between the pressure plate and the support plate to form a spacing between the pressure plate and the support plate, a second spring is arranged between the pressure plate and the insulating plate to form a spacing between the pressure plate and the insulating plate, the insulating plate is provided with a conductive sheet, and is inserted into the cavity of the wiring port and abuts against the end of the fastening screw.

[0008] Preferably, a first blind hole is provided at the bottom of the guide pillar.

[0009] Preferably, the pressing plate is provided with an abutting portion corresponding to the pressure-bearing surface, and the pressing plate is provided with a second blind hole located on the back side of the abutting portion.

[0010] Preferably, the pressure-bearing surface and the abutting portion are arranged in an arc shape.

[0011] Preferably, the first spring is arranged in the first blind hole, and the second spring is arranged in the second blind hole.

[0012] Preferably, the insulating plate is provided with an extension plate, which is in a perpendicular relationship with the insulating plate. The extension plate and the conductive sheet are integrally formed by injection molding, and the conductive sheet and the extension plate are in a perpendicular relationship.

[0013] Preferably, the wiring port is provided with a countersunk hole, and the head of the fastening screw is arranged in the countersunk hole.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model places the exposed part of the wire in the cavity of the wiring port, and by rotating the fastening screw, the conductive sheet is pushed down and moved, and the exposed part of the wire is pressed against the static spring terminal, which is a primary fixation of the wire. As the distance between the pressure plate and the insulating plate is shortened, the pitch of the second spring is squeezed by the insulating plate, and the elastic force is released to push the pressure plate downward, thereby compressing the pitch of the first spring, and the abutment portion presses the insulating layer of the wire against the pressure-bearing surface, thereby performing a secondary fixation on the wire. Through the above design, only the fastening screw needs to be rotated to complete the double fixation of the wire, thereby preventing the risk of loose connection caused by the wire being pulled, and the above operation is easy to learn, and does not require the user to re-learn and train time, so that the product has the advantages of anti-pull function and improved connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a capacitor contactor with stable connection according to the utility model;

[0018] Figure 2 It is a schematic diagram of the side cross-sectional structure of a capacitor contactor with stable connection according to the utility model;

[0019] Figure 3 An exploded view of a clamping assembly of a capacitor contactor with a stable connection according to the utility model;

[0020] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0021] Figure numerals: 1. contactor body; 2. wiring port; 3. fastening screw; 4. wire clamping assembly; 5. support plate; 6. pressure plate; 7. insulating plate; 8. first spring; 9. second spring; 21. countersunk hole; 51. pressure-bearing surface; 52. guide column; 53. first blind hole; 61. abutment portion; 62. second blind hole; 71. conductive sheet; 72. extension plate. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] Reference example Figures 1 to 3 , a capacitor contactor with stable connection, comprising a contactor body 1, and wiring ports 2 arranged at both ends of the contactor body 1, and fastening screws 3 threadedly connected to the wiring ports 2, a wire clamping assembly 4 is arranged at the entrance of the wiring port 2, the wire clamping assembly 4 comprises a support plate 5, a pressure plate 6, and an insulating plate 7, the support plate 5 is provided with pressure-bearing surfaces 51 with equal intervals from left to right, guide pillars 52 are arranged on both sides of the pressure-bearing surface 51, the pressure plate 6 and the insulating plate 7 are slidably arranged on the guide pillars 52 in sequence, a first spring 8 is arranged between the pressure plate 6 and the support plate 5 to form a gap between the pressure plate 6 and the support plate 5, a second spring 9 is arranged between the pressure plate 6 and the insulating plate 7 to form a gap between the pressure plate 6 and the insulating plate 7, the insulating plate 7 is provided with a conductive sheet 71, and is inserted into the cavity of the wiring port 2 and abuts against the end of the fastening screw 3;

[0025] It is worth mentioning that a first blind hole 53 is provided at the bottom of the guide column 52. The guide column 52 provides a guide for the insulating plate 7 and the pressing plate 6. The first blind hole 53 prevents the first spring 8 from being separated and provides a receiving space for the first spring 8 to prevent the first spring 8 from losing its elastic potential energy due to excessive squeezing when the pressing plate 6 abuts against the support plate 5.

[0026] It is worth mentioning that the pressing plate 6 is provided with an abutting portion 61 corresponding to the pressure-bearing surface 51, and the pressing plate 6 is provided with a second blind hole 62, and is located on the back of the abutting portion 61. The abutting portion 61 can be made of elastic rubber material. The abutting portion 61 presses the wire against the pressure-bearing surface 51, and the second blind hole 62 prevents the second spring 9 from detaching;

[0027] It is worth mentioning that the shapes of the pressure-bearing surface 51 and the abutting portion 61 are set to be arc-shaped, and the arc-shaped fits the surface of the wire better, thereby increasing the contact area with the wire and improving the friction force;

[0028] It is worth mentioning that the first spring 8 is arranged in the first blind hole 53, and the second spring 9 is arranged in the second blind hole 62. The elastic force of the second spring 9 is greater than the total elastic force of the first spring 8, and the second spring 9 can adapt to wires of different diameters. As the diameter of the wire increases, the distance between the pressing plate 6 and the insulating plate 7 will be further reduced, so that the pitch of the second spring 9 is further reduced, releasing a greater elastic force to the pressing plate 6;

[0029] It is worth mentioning that the insulating plate 7 is provided with an extension plate 72, which is in a perpendicular relationship with the insulating plate 7. The extension plate 72 and the conductive sheet 71 are integrally formed by injection molding. The conductive sheet 71 and the extension plate 72 are in a perpendicular relationship. The insulating plate 7 provides a support point for the second spring 9. The extension plate 72 not only raises the distance between the insulating plate 7 and the conductive plate, but also prevents people from accidentally touching the exposed part of the wire. The insulating plate 7 prevents the current of the conductive sheet 71 from being conducted to the insulating plate 7.

[0030] It is worth mentioning that the wiring port 2 is provided with a countersunk hole 21, and the head of the fastening screw 3 is arranged in the countersunk hole 21. When the fastening screw 3 sinks, the countersunk hole 21 prevents people from accidentally touching the live fastening screw 3.

[0031] The use principle of the utility model is now described as follows:

[0032] Place the exposed part of the wire in the cavity of the wiring port 2, and tighten the fastening screw 3 by rotating it. The fastening screw 3 gradually moves downward, and pushes the conductive sheet 71 downward to move, and presses the exposed part of the wire against the static spring terminal. This is the first fixation of the wire.

[0033] As the distance between the pressure plate 6 and the insulating plate 7 shortens, the pitch of the second spring 9 is squeezed by the insulating plate 7, and the elastic force is released to push the pressure plate 6 downward, thereby compressing the pitch of the first spring 8 until the abutment 61 presses the insulating layer of the wire against the pressure-bearing surface 51, thereby performing a second fixation on the wire. Through the above design, the double fixation of the wire can be completed by only rotating the fastening screw 3.

[0034] The above design scheme can enable the product to achieve the advantages of anti-pull function and improved connection reliability.

[0035] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A capacitor contactor with stable connection, comprising a contactor body (1), and wiring ports (2) arranged at both ends of the contactor body (1), and fastening screws (3) threadedly connected to the wiring ports (2), wherein a wire clamping assembly (4) is provided at the entrance of the wiring port (2), characterized in that: The clamping assembly (4) comprises a support plate (5), a pressure plate (6), and an insulating plate (7); the support plate (5) is provided with pressure-bearing surfaces (51) at equal intervals from left to right; guide pillars (52) are provided on both sides of the pressure-bearing surfaces (51); the pressure plate (6) and the insulating plate (7) are slidably arranged on the guide pillars (52) in sequence; a first spring (8) is provided between the pressure plate (6) and the support plate (5) to form a spacing between the pressure plate (6) and the support plate (5); a second spring (9) is provided between the pressure plate (6) and the insulating plate (7) to form a spacing between the pressure plate (6) and the insulating plate (7); the insulating plate (7) is provided with a conductive sheet (71), which is inserted into the cavity of the wiring port (2) and abuts against the end of the fastening screw (3).

2. The capacitor contactor with stable connection according to claim 1, characterized in that: A first blind hole (53) is provided at the bottom of the guide column (52).

3. The capacitor contactor with stable connection according to claim 2, characterized in that: The pressing plate (6) is provided with an abutting portion (61) corresponding to the pressure-bearing surface (51), and the pressing plate (6) is provided with a second blind hole (62) located on the back side of the abutting portion (61).

4. The capacitor contactor with stable connection according to claim 3, characterized in that: The pressure-bearing surface (51) and the abutting portion (61) are arranged in arc shapes.

5. The capacitor contactor with stable connection according to claim 4, characterized in that: The first spring (8) is arranged in the first blind hole (53), and the second spring (9) is arranged in the second blind hole (62).

6. The capacitor contactor with stable connection according to claim 1, characterized in that: The insulating plate (7) is provided with an extension plate (72) which is in a perpendicular relationship with the insulating plate (7); the extension plate (72) and the conductive sheet (71) are integrally formed by injection molding; and the conductive sheet (71) and the extension plate (72) are in a perpendicular relationship.

7. The capacitor contactor with stable connection according to claim 1, characterized in that: The wiring port (2) is provided with a countersunk hole (21), and the head of the fastening screw (3) is arranged in the countersunk hole (21).

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