Self-protection square capacitor capable of being repeatedly used

Abstract

The utility model discloses a square capacitor capable of realizing reutilization and self protection, which relates to the technical field of capacitors and mainly comprises a capacitor body and a protector body, the capacitor body is detachably connected with the protector body, the capacitor body comprises a packaging shell and a core body, an overcurrent protector is an overcurrent protector, and the protector body is a square capacitor. Moving notches are formed in the tops of the two side walls of the packaging shell; according to the utility model, through the arrangement of the double-end positioning piece, in an actual installation scene, once one elastic fastener is damaged due to overlarge stress, only the bridging strip needs to be simply deflected, and the positions of the two elastic fasteners are replaced, so that the installation of the overcurrent protector can be conveniently and manually implemented again in a short time; compared with an existing single elastic clamping piece fixing mode, the design flexibility of the positioning piece with the double ends is higher, even if the elastic clamping piece is damaged, installation parts do not need to be integrally replaced, the installation time is greatly shortened, and the installation difficulty and cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, specifically to a square capacitor that can be reused and self-protected. Background Technology

[0002] In power systems, capacitors are widely used for power factor compensation, filtering, and energy storage. However, during operation, harmonics, short circuits, and overloads often cause overcurrents, which cause the capacitor to heat up rapidly, resulting in insulation aging. In severe cases, insulation breakdown or even explosion can occur, threatening the safety of the power system.

[0003] Therefore, capacitors with overcurrent protection devices have been developed. When the current exceeds the limit, the protector automatically disconnects the circuit to protect the circuit and the capacitor. After the fault is cleared, pressing the reset button will allow the capacitor to resume operation, thus improving safety and reliability.

[0004] Currently, conventional overcurrent protectors are mostly fixed by thin metal elastic clips on the capacitor shell to achieve quick installation. However, due to the small installation space and inconvenient tool operation, the elastic clips are easily subjected to excessive external force. In addition, the material is thin and has low strength, making them very easy to break during installation. Once damaged, the protector cannot be installed securely, and the protection function will fail. Utility Model Content

[0005] To solve the above-mentioned technical problems, a square capacitor that can be reused and self-protected is provided, which solves the problems described in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a square capacitor that can be reused and self-protected. The product mainly consists of a capacitor body and a protector body, and the capacitor body and the protector body are detachably connected.

[0007] The capacitor body includes an encapsulation shell and a core encapsulated in the encapsulation shell by epoxy resin;

[0008] The overcurrent protector is an overcurrent protector. The top of both sides of the package housing are provided with a movement notch. The movement notch is equipped with a double-headed positioning component for quickly fixing the overcurrent protector. The bottom of the side wall of the overcurrent protector is provided with a positioning slot that cooperates with the double-headed positioning component.

[0009] The dual-head positioning component includes a bridging strip rotatable within the movement notch and two elastic fasteners respectively disposed on both ends of the bridging strip.

[0010] Preferably, the back side of the bridging strip is fitted with a connecting seat that is fixed to the innermost inner wall of the moving notch, and a locking stud that is fixed to the connecting seat passes through the center of the bridging strip. The end of the locking stud is threaded with a locking nut that abuts against the front side of the bridging strip.

[0011] Preferably, the elastic fastener includes an elastic sheet fixed to the end face of the bridging strip and a wedge-shaped positioning block fixed to the end of the elastic sheet facing the encapsulation housing, the wedge-shaped positioning block being in the shape of an isosceles trapezoid.

[0012] Preferably, the positioning slot includes a positioning notch formed at the bottom of the overcurrent protector and a wedge-shaped positioning groove formed on the innermost inner wall of the positioning notch, the wedge-shaped positioning groove being adapted to the wedge-shaped positioning block.

[0013] Compared with the prior art, the advantages of this utility model are as follows: By setting up a double-headed positioning component, in actual installation scenarios, if one of the elastic fasteners is damaged due to excessive force, only a simple deflection bridging strip is needed to replace the two elastic fasteners. In this way, it is convenient for manual reinstallation of the overcurrent protector in a short time. Compared with the existing single elastic clip fixing method, this design with double-headed positioning components is more flexible. Even if the elastic clip is damaged, there is no need to replace the entire installation component, which greatly shortens the installation time and reduces the installation difficulty and cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the separate structure of the packaging shell and the overcurrent protector of this utility model;

[0016] Figure 3 This is a schematic diagram of one side of the double-headed positioning component of this utility model;

[0017] Figure 4 This is a schematic diagram of the other side of the double-headed positioning component of this utility model.

[0018] The numbers on the map are:

[0019] 1. Encapsulation shell; 2. Core; 3. Overcurrent protector; 4. Motion notch; 5. Bridging strip; 6. Elastic sheet; 7. Wedge positioning block; 8. Positioning notch; 9. Wedge positioning groove; 10. Connecting seat; 11. Locking stud; 12. Locking nut. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] Reference Figure 1-2 As shown, a square capacitor that can be reused and self-protected is presented. The product mainly consists of a capacitor body and a protector body, and the capacitor body and the protector body are detachably connected.

[0022] The capacitor body includes a casing 1 and a core 2 encapsulated in the casing 1 with epoxy resin;

[0023] The main body of the protector is an overcurrent protector 3;

[0024] A search of existing technology revealed patent publication number CN 219738755 U, entitled "Capacitor with Overcurrent Self-Protection Device." The contents of this document indicate that the capacitor body and protector body in this case utilize conventional technologies. This existing patent clearly describes the basic structure and working principle of the capacitor body, whose main function is to store and release electrical energy. It is a fundamental component well-known to those skilled in the art. Simultaneously, the overcurrent protector plays a crucial protective role in the circuit, quickly cutting off the circuit when the current exceeds a set threshold, preventing component damage and equipment failure due to overcurrent. Therefore, this case will not elaborate on the detailed internal structure and circuit principles of both components; detailed information can be found in the aforementioned document.

[0025] Furthermore, referring to Figure 1-4 As shown, it is worth noting that the top of both sides of the encapsulation housing 1 is provided with a movement notch 4. The movement notch 4 is equipped with a double-headed positioning component for quickly fixing the overcurrent protector 3. The bottom of the side wall of the overcurrent protector 3 is provided with a positioning slot that cooperates with the double-headed positioning component.

[0026] The double-headed positioning component includes a bridging strip 5 that can rotatably fit within the movement notch 4 and two elastic fasteners respectively disposed on both ends of the bridging strip 5;

[0027] With the dual-head positioning component, in actual installation scenarios, if one of the elastic fasteners breaks due to excessive force, only the simple deflection bridging strip 5 is needed to replace the two elastic fasteners. In this way, it is convenient for manual reinstallation of the overcurrent protector 3 in a short time. Compared with the existing single elastic fastener fixing method, this design with dual-head positioning component is more flexible. Even if the elastic fastener is damaged, there is no need to replace the entire installation component, which greatly shortens the installation time and reduces the installation difficulty and cost.

[0028] Furthermore, referring to Figure 2-4As shown, it is worth noting that the back side of the bridging strip 5 is fitted with a connecting seat 10 that is fixed to the innermost inner wall of the moving notch 4, and the center of the bridging strip 5 is through which a locking stud 11 is fixedly connected to the connecting seat 10. The end of the locking stud 11 is threadedly connected to a locking nut 12 that abuts against the front side of the bridging strip 5.

[0029] As shown above, after rotating the bridging strip 5 to switch the positions of the two elastic fasteners, simply turn the knob to tighten the locking nut 12 so that the locking nut 12 presses against the bridging strip 5 under the thread structure, which can lock the bridging strip 5 to a certain extent and ensure the stability of the two elastic fasteners after switching.

[0030] Furthermore, referring to Figure 2 and Figure 3 As shown, it is worth noting that the elastic fastener includes an elastic piece 6 fixed to the end face of the bridging strip 5 and a wedge-shaped positioning block 7 fixed to the end of the elastic piece 6 facing the encapsulation housing 1. The wedge-shaped positioning block 7 is in the shape of an isosceles trapezoid.

[0031] The positioning slot includes a positioning notch 8 at the bottom of the overcurrent protector 3 and a wedge-shaped positioning groove 9 on the innermost inner wall of the positioning notch 8. The wedge-shaped positioning groove 9 is adapted to the wedge-shaped positioning block 7.

[0032] The installation process for the overcurrent protector 3 to the top of the package housing 1 is as follows: Initially, the elastic piece 6 precisely aligns with the positioning notch 8 and is slowly inserted. As insertion progresses, the inner wall of the bottom of the positioning notch 8 gradually contacts and presses against the inclined side of the wedge-shaped positioning block 7. Under this pressure, the elastic piece 6 bends away from the package housing 1, effectively eliminating any obstruction to the placement of the overcurrent protector 3 and allowing for smoother installation. Once the elastic piece 6 is fully submerged inside the positioning notch 8, the wedge-shaped positioning groove 9 and the wedge-shaped positioning block 7 are precisely in corresponding positions. Due to the elastic potential energy of the elastic piece 6, it quickly rebounds and resets itself the instant the obstruction is eliminated, symmetrically embedding the wedge-shaped positioning block 7 into the wedge-shaped positioning groove 9. Thus, the overcurrent protector 3 is precisely positioned and securely installed on the package housing 1, laying a solid foundation for its subsequent normal protection function.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reusable, self-protected square capacitor, mainly composed of a capacitor body and a protector body, wherein the capacitor body and the protector body are detachably connected; The capacitor body includes a casing (1) and a core (2) encapsulated in the casing (1) by epoxy resin; The protector body is an overcurrent protector (3), characterized in that, The top of both sides of the encapsulation shell (1) is provided with a movement notch (4), and the movement notch (4) is provided with a double-headed positioning component for quickly fixing the overcurrent protector (3). The bottom of the side wall of the overcurrent protector (3) is provided with a positioning buckle groove that cooperates with the double-headed positioning component. The dual-head positioning component includes a bridging strip (5) rotatable within the movement notch (4) and two elastic fasteners respectively disposed on both ends of the bridging strip (5).

2. The square-shaped capacitor of claim 1, wherein, The back side of the bridging strip (5) is fitted with a connecting seat (10) that is fixed to the innermost inner wall of the moving notch (4). A locking stud (11) that is fixed to the connecting seat (10) passes through the center of the bridging strip (5). The end of the locking stud (11) is threaded with a locking nut (12) that abuts against the front side of the bridging strip (5).

3. The square-shaped capacitor of claim 2, wherein, The elastic fastener includes an elastic piece (6) fixed to the end face of the bridging strip (5) and a wedge-shaped positioning block (7) fixed to the end of the elastic piece (6) facing the encapsulation shell (1). The wedge-shaped positioning block (7) is in the shape of an isosceles trapezoid.

4. The square-shaped capacitor of claim 3, wherein, The positioning slot includes a positioning notch (8) at the bottom of the overcurrent protector (3) and a wedge-shaped positioning groove (9) on the innermost inner wall of the positioning notch (8), and the wedge-shaped positioning groove (9) is adapted to the wedge-shaped positioning block (7).

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