Fuse capable of being rapidly assembled and produced

Abstract

The utility model discloses a fast assembly production fuse relates to fuse technical field, including shell, contact knife subassembly and bottom connecting piece, the lower end of shell is equipped with the butt joint groove, the upper end of butt joint groove is equipped with the mounting groove, the inner wall of the front side and the inner wall of the rear side of mounting groove are both fixedly connected with two convex buckle position that distributes symmetrically, and the bottom connecting piece is equipped with the bottom connecting piece. The contact knife assembly comprises two contacts, a plurality of contact knife springs are fixedly connected between the two contacts, contact grooves are formed in the middles of the upper ends of the contacts, connecting pieces are fixedly connected to the lower ends of the contacts, through holes are formed in the upper ends of the connecting pieces in a penetrating mode, and the bottom connecting piece comprises a bottom plate. According to the fuse structure, the contact knife assembly is embedded into the shell, the bottom connecting piece is connected with the shell in the mode that the buckle reversely hooks the protruding buckle position, the assembling process is simplified, the product structure is simple, assembling is convenient and fast, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, specifically to a fuse that can be rapidly assembled and produced. Background Technology

[0002] A fuse is an electrical device that breaks the circuit by melting its fusible element when the current exceeds a specified value. It is widely used in high and low voltage power distribution systems, control systems, and electrical equipment as a short-circuit and overcurrent protector and is one of the most commonly used protective devices.

[0003] Most existing fuses have complex structures and generally use screws to fix the contacts to the tube body at both ends. This involves many production steps and results in low production efficiency. Therefore, a fuse that can be quickly assembled and produced is proposed to solve the problems mentioned above. Utility Model Content

[0004] To solve the above-mentioned technical problems, a fuse that can be quickly assembled and produced is provided. This technical solution solves the problem mentioned in the background art that most existing fuses have complex structures and generally use screws to fix the contacts to the tube body at both ends, resulting in many production processes and low production efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fuse for rapid assembly includes a housing, a contact assembly, and a bottom connector. The lower end of the housing has a mating groove, and the upper end of the mating groove has a mounting groove. The front inner wall and the rear inner wall of the mounting groove are both fixedly connected with two symmetrically distributed protruding fasteners.

[0007] The contact blade assembly includes two contacts, and multiple contact blade springs are fixedly connected between the two contacts. A contact groove is opened in the middle of the upper end of the contact, and a connecting piece is fixedly connected to the lower end of the contact. A through hole is opened through the upper end of the connecting piece.

[0008] The bottom connector includes a base plate, with a positioning plate fixedly connected to the upper end of the base plate. Two symmetrically distributed buckles are fixedly connected to the front inner wall and the rear inner wall of the positioning plate, with the lower end of the buckles fixedly connected to the upper end of the base plate.

[0009] Preferably, guide strips are fixedly connected to the four corners of the top inner side of the mounting groove.

[0010] Preferably, the contact is inserted between two guide bars.

[0011] Preferably, the base plate is inserted into the inside of the docking groove, and the positioning plate is inserted into the inside of the mounting groove.

[0012] Preferably, a reinforcing rib is fixedly connected to the upper end of the base plate.

[0013] Preferably, a sealing gasket is fixedly connected to the upper end of the positioning plate.

[0014] Preferably, the buckle is engaged with the inner side of the protruding buckle position.

[0015] The advantages of this utility model compared with the prior art are:

[0016] This solution proposes a fuse for rapid assembly and production. The fuse structure involves embedding the contact blade assembly into the housing, and the bottom connector is connected to the housing by hooking the protruding buckle in the opposite direction with a snap. This simplifies the assembly process, makes the product structure simple, and facilitates quick and easy assembly, thereby improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded view of the present invention;

[0019] Figure 3 This is a schematic diagram of the shell structure in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the blade assembly in this utility model;

[0021] Figure 5 This is a schematic diagram of the bottom connector in this utility model.

[0022] The numbers on the map are:

[0023] 1. Housing; 101. Docking groove; 102. Mounting groove; 103. Protruding fastener; 104. Guide strip;

[0024] 2. Contact knife assembly; 201. Contact head; 202. Contact knife spring; 203. Contact groove; 204. Connecting piece; 205. Through hole;

[0025] 3. Bottom connector; 301. Base plate; 302. Positioning plate; 303. Buckle; 304. Reinforcing rib; 305. Sealing gasket. Detailed Implementation

[0026] 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.

[0027] Reference Figures 1-5As shown, a fuse for rapid assembly includes a housing 1, a contact assembly 2 and a bottom connector 3. The lower end of the housing 1 is provided with a mating groove 101 and the upper end of the mating groove 101 is provided with a mounting groove 102. The front inner wall and the rear inner wall of the mounting groove 102 are fixedly connected with two symmetrically distributed protruding fasteners 103.

[0028] The contact knife assembly 2 includes two contacts 201, and multiple contact knife springs 202 are fixedly connected between the two contacts 201. A contact groove 203 is provided in the middle of the upper end of the contact 201, and a connecting piece 204 is fixedly connected to the lower end of the contact 201. A through hole 205 is provided through the upper end of the connecting piece 204.

[0029] Furthermore, the bottom connector 3 includes a base plate 301, and a positioning plate 302 is fixedly connected to the upper end of the base plate 301. Two symmetrically distributed buckles 303 are fixedly connected to the front inner wall and the rear inner wall of the positioning plate 302. The lower end of the buckles 303 is fixedly connected to the upper end of the base plate 301.

[0030] Furthermore, guide strips 104 are fixedly connected to the four corners of the top inner side of the mounting groove 102. The contact 201 is inserted between two guide strips 104. The guide strips 104 are used to guide the contact assembly 2 and the housing 1 when they are docked. When installing the contact assembly 2, the contact assembly 2 can be quickly installed by aligning the two contacts 201 and inserting them between the two guide strips 104 on the left and the two guide strips 104 on the right.

[0031] Furthermore, the dimensions of the base plate 301 are consistent with the dimensions of the docking groove 101, and the dimensions of the positioning plate 302 are consistent with the dimensions of the mounting groove 102. These dimensions can guide and limit the installation of the bottom connector 3. After the bottom connector 3 is docked with the housing 1, the base plate 301 is inserted into the interior of the docking groove 101, and the positioning plate 302 is inserted into the interior of the mounting groove 102. At this time, the housing 1, the contact knife assembly 2, and the bottom connector 3 form a whole.

[0032] Furthermore, the upper end of the base plate 301 is fixedly connected with reinforcing ribs 304. There are three reinforcing ribs 304, which are arranged in a cross pattern to improve the compressive strength of the structure.

[0033] Furthermore, a sealing gasket 305 is fixedly connected to the upper end of the positioning plate 302. The sealing gasket 305 is used to fill the gap between the positioning plate 302 and the mounting groove 102 after the bottom connector 3 is installed, to ensure the sealing performance of the fuse after assembly.

[0034] Furthermore, the buckle 303 is engaged with the inside of the protruding buckle 103.

[0035] Furthermore, the buckle 303 is made of elastic material. When the bottom connector 3 is inserted into the housing 1, the buckle 303 will undergo elastic deformation. When the bottom connector 3 is fully inserted, the buckle 303 will rebound and reset, and then hook the protruding buckle 103 in the opposite direction to lock the bottom connector 3, thereby achieving quick assembly.

[0036] Furthermore, the fuse structure adopts a method of embedding the contact blade assembly 2 into the housing 1, and connecting the bottom connector 3 to the housing 1 by hooking the protruding buckle 103 in the opposite direction with the buckle 303, which simplifies the assembly process and makes the assembly quick and easy, thus improving the processing efficiency.

[0037] Working principle: In use, first align the two contacts 201 and insert them between the two guide bars 104 on the left and the two guide bars 104 on the right respectively to quickly complete the installation of the contact knife assembly 2. Then, insert the base plate 301 and the positioning plate 302 into the docking groove 101 and the mounting groove 102. During the insertion process, the buckle 303 will undergo elastic deformation. When the bottom connector 3 is fully inserted, the buckle 303 will rebound and reset, and then hook the protruding buckle 103 in the opposite direction to lock the bottom connector 3. At this time, the housing 1, the contact knife assembly 2 and the bottom connector 3 form a whole.

[0038] 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 fast-assembled production fuse, characterized by It includes a housing (1), a blade assembly (2) and a bottom connector (3). The lower end of the housing (1) is provided with a docking groove (101) and the upper end of the docking groove (101) is provided with a mounting groove (102). The front inner wall and the rear inner wall of the mounting groove (102) are fixedly connected with two symmetrically distributed protruding fasteners (103). The contact knife assembly (2) includes two contacts (201), and a plurality of contact knife springs (202) are fixedly connected between the two contacts (201). A contact groove (203) is provided in the middle of the upper end of the contact (201), and a connecting piece (204) is fixedly connected to the lower end of the contact (201). A through hole (205) is provided through the upper end of the connecting piece (204). The bottom connector (3) includes a base plate (301), and a positioning plate (302) is fixedly connected to the upper end of the base plate (301). Two symmetrically distributed buckles (303) are fixedly connected to the front inner wall and the rear inner wall of the positioning plate (302). The lower end of the buckle (303) is fixedly connected to the upper end of the base plate (301).

2. A fast-assembled production fuse according to claim 1, characterized in that: Guide strips (104) are fixedly connected to the four corners of the top inner side of the mounting groove (102).

3. A fast-assembled production fuse according to claim 1, characterized in that: The contact (201) is inserted between two guide bars (104).

4. A quick assembly production fuse according to claim 1, characterized in that: The base plate (301) is inserted into the inside of the docking groove (101), and the positioning plate (302) is inserted into the inside of the mounting groove (102).

5. A quick assembly production fuse according to claim 1, characterized in that: The upper end of the base plate (301) is fixedly connected to the reinforcing rib (304).

6. A quick assembly production fuse according to claim 1, characterized in that: A sealing gasket (305) is fixedly connected to the upper end of the positioning plate (302).

7. A quick assembly production fuse according to claim 1, characterized in that: The buckle (303) engages with the inside of the protruding buckle (103).

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