Copper cap for fuse

Abstract

The utility model discloses a copper cap for a fuse, which relates to the field of fuses, solves the problem that the existing spring auxiliary press fitting is tightly attached to the outer wall of a glass tube, so that the spring auxiliary press fitting is easy to slip off and separate from the copper cap, and adopts the following scheme that the copper cap comprises the glass tube and the copper caps at the two ends of the glass tube, and the fuse is movably sleeved on the inner sides of the glass tube and the copper caps; glass end tubes are arranged at the two ends of the glass tube, sliding grooves are formed in the outer walls of the glass end tubes, and clamping grooves communicating with the sliding grooves are further formed in the outer walls of the glass end tubes; a clamping seat is fixedly mounted on the inner side wall of the copper cap, a main body of the clamping seat is an elastic hollow block, a clamping end is arranged at the bottom end of the elastic hollow block, and the clamping end is matched with the clamping groove in specification; according to the copper cap for the fuse, the copper cap is assembled in a mode of clamping the glass tube and the copper cap, and during assembly, the clamping seat is extruded to deform and is clamped in the clamping groove to realize clamping operation, so that the contact area during clamping can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of fuses, in particular to a copper cap for fuses. Background Art

[0002] Fuses are also called current fuses, and they are mainly used for overload protection. If the fuse is correctly placed in the circuit, the fuse will melt and cut off the current when the current abnormally rises to a certain height and temperature, thus protecting the safe operation of the circuit. Generally, a glass tube is set on the outside of the fuse, and copper caps are installed at both ends of the glass tube;

[0003] After searching, the application with patent application number CN202220139412.3 discloses a copper cap for a subminiature fuse, comprising a fuse body and a copper cap body, a positioning mechanism is arranged on the outside of the copper cap body, the positioning mechanism comprises a mounting cylinder mounted on the outside of the copper cap body, a connecting rod is arranged inside the mounting cylinder, a stopper is arranged at one end of the mounting cylinder located inside the mounting cylinder, a spring is arranged inside the mounting cylinder, the other end of the connecting rod extends to the inside of the copper cap body, and an anti-slip pad is arranged at one end of the connecting rod located inside the copper cap body, and a sealing ring is arranged inside the copper cap body;

[0004] The above application document assembles the copper caps on both ends of the glass tube by setting a clamping assembly. However, the external clamping method occupies a large outer space and is a close-fitting clamping method, which uses the elastic force of the spring as the limiting force. Since the outer wall of the glass tube is smooth, the spring pressure may cause relative sliding between them, thereby causing the copper cap to separate from the glass tube, and the stability is limited.

[0005] Therefore, we propose a copper cap for a fuse. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a copper cap for a fuse, which solves the problem that the existing spring-assisted press-fitting is in close contact with the outer wall of the glass tube, which easily causes the copper cap to slip and separate.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a copper cap for a fuse, comprising a glass tube and copper caps at both ends thereof, and the glass tube and the copper cap are movably sheathed with a fuse inside;

[0008] Glass end tubes are arranged at both ends of the glass tube, and a sliding groove is provided on the outer wall of the glass end tube, and a clamping groove connected to the sliding groove is also provided on the outer wall of the glass end tube;

[0009] A card-mounting seat is fixedly installed on the inner side wall of the copper cap. The main body of the card-mounting seat is an elastic hollow block. A card end is arranged at the bottom end of the elastic hollow block, and the card end is adapted to the card-mounting slot.

[0010] Preferably, a guide groove connected to the sliding groove is provided at the outer edge of the glass end tube, and the guide groove is an arc groove which gradually decreases inwards;

[0011] The setting of the guide groove can ensure that the bottom end of the card end enters the guide groove first and passes through the sliding groove to be connected in the card slot during the sliding process, and the card operation is simple.

[0012] Preferably, three groups of sliding grooves distributed in an annular shape are arranged on the outer side wall of the glass end tube, and the glass end tube is made of the same material as the glass tube;

[0013] Among them, the arrangement of three groups of sliding grooves can ensure the stability of the clamping, and the glass tube and the glass end tube are an integrated glass body.

[0014] Preferably, the top end of the elastic hollow block is fixedly connected to the inner wall of the copper cap via a mounting seat, and the mounting seat and the copper cap are assembled via a screw groove and a fastening bolt;

[0015] The installation seat is arranged so as to be easily assembled on the inner side wall of the copper cap by means of fastening bolts.

[0016] Preferably, the elastic hollow block is an oblique L-shaped block, and the card end at the bottom of the elastic hollow block is adapted to the shape and specification of the card slot;

[0017] The setting of the elastic hollow block facilitates its automatic deformation under pressure during sliding installation, and its restoration to its original shape and automatic locking in the locking groove.

[0018] Preferably, the right end of the sliding groove is provided with an arc-shaped portion inclined downward, and the outer wall of the elastic hollow block is provided with an arc sliding portion located on the top side of the card end;

[0019] The arrangement of the arc-shaped parts facilitates the sliding and snap connection therebetween.

[0020] The utility model provides a copper cap for a fuse, which has the following beneficial effects:

[0021] 1. The copper cap of the fuse is assembled by clamping the glass tube and the copper cap. During assembly, the clamping seat is squeezed to deform it and clamped in the clamping groove to achieve the clamping operation. This ensures the contact area during clamping, thereby ensuring the clamping effect, and solves the problem that the existing spring-assisted press-fitting is close to the outer wall of the glass tube and is easy to cause it to slip and separate from the copper cap;

[0022] 2. The copper cap for the fuse can make the clamping end at the bottom of the elastic hollow block pass through the sliding groove and automatically slide into the clamping groove for subsequent clamping during sliding installation through the setting of the sliding groove and the guide groove, which is simple to operate and has high clamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a structural schematic diagram of the glass end tube of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the inner side of the copper cap of the utility model;

[0026] Figure 4 It is a structural schematic diagram of the card mounting seat of the utility model.

[0027] In the figure: 1, glass tube; 11, glass end tube; 111, sliding groove; 112, guide groove; 113, clamping groove; 2, copper cap; 21, clamping seat; 211, mounting seat; 212, elastic hollow block; 213, clamping end; 214, arc sliding part. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0029] Embodiment 1:

[0030] A copper cap for a fuse comprises a glass tube 1 and copper caps 2 at both ends thereof, wherein the glass tube 1 and the copper cap 2 are movably sleeved with fuses inside; glass end tubes 11 are arranged at both ends of the glass tube 1, a sliding groove 111 is arranged on the outer wall of the glass end tube 11, and a clamping groove 113 connected to the sliding groove 111 is also arranged on the outer wall of the glass end tube 11; a clamping seat 21 is fixedly installed on the inner side wall of the copper cap 2, the main body of the clamping seat 21 is an elastic hollow block 212, a clamping end 213 is arranged at the bottom end of the elastic hollow block 212, and the clamping end 213 is adapted to the specification of the clamping groove 113;

[0031] The copper cap of the fuse is assembled by clamping the glass tube 1 and the copper cap 2. During assembly, the clamping seat 21 is squeezed to deform the copper cap 2 and clamped in the clamping groove 113 to achieve the clamping operation. This ensures the contact area during clamping, thereby ensuring the clamping effect, and solves the problem that the existing spring-assisted press-fitting is in close contact with the outer wall of the glass tube 1, which easily causes the copper cap 2 to slip and separate.

[0032] Embodiment 2:

[0033] A guide groove 112 connected to the sliding groove 111 is provided at the outer edge of the glass end tube 11, and the guide groove 112 is an arc groove that gradually decreases inward; wherein, the setting of the guide groove 112 can ensure that the bottom end of the card end 213 first enters the guide groove 112 and passes through the sliding groove 111 during the sliding process to be carded in the card slot 113, and the carding operation is simple.

[0034] Three groups of sliding grooves 111 are arranged in an annular shape on the outer wall of the glass end tube 11, and the glass end tube 11 is made of the same material as the glass tube 1; wherein the arrangement of the three groups of sliding grooves 111 can ensure the stability of the clamping, and the glass tube 1 and the glass end tube 11 are an integrated glass body.

[0035] The top of the elastic hollow block 212 is fixedly connected to the inner wall of the copper cap 2 through the mounting seat 211, and the mounting seat 211 and the copper cap 2 are assembled through screw grooves and fastening bolts; wherein, the setting of the mounting seat 211 facilitates assembly on the inner wall of the copper cap 2 through fastening bolts.

[0036] The elastic hollow block 212 is an oblique L-shaped block, and the clamping end 213 at the bottom of the elastic hollow block 212 is adapted to the shape and specifications of the clamping slot 113; wherein, the setting of the elastic hollow block 212 facilitates its automatic compression deformation during sliding, and restores its original shape and automatically clamps in the clamping slot 113.

[0037] The right end of the sliding groove 111 is provided with a downwardly inclined arc portion, and the outer wall of the elastic hollow block 212 is provided with an arc sliding portion 214 located on the top side of the clamping end 213; wherein, the arrangement of the arc portion facilitates sliding clamping therebetween.

[0038] In addition, the copper cap for the fuse can, through the setting of the sliding groove 111 and the guide groove 112, enable the clamping end 213 at the bottom end of the elastic hollow block 212 to pass through the sliding groove 111 and automatically slide into the clamping groove 113 for subsequent clamping during sliding installation, which is simple to operate and has high clamping efficiency.

[0039] The working principle and use process of the utility model are as follows: when the device is required to work, the copper cap 2 is sleeved on the two ends of the glass tube 1, and the bottom end of the clamping seat 21 on the inner wall thereof is slid into the sliding groove 111, and clamped into the clamping groove 113 along the sliding groove 111, so as to achieve the effect of automatic clamping, with a high degree of automation and good clamping effect. When disassembling, it is only necessary to pull out the copper cap 2 to deform the clamping seat 21 inside it under stress, and then slide out along the sliding groove 111 again to complete the automatic disassembly.

[0040] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A copper cap for a fuse, comprising a glass tube (1) and copper caps (2) at both ends thereof, wherein the glass tube (1) and the copper cap (2) are movably sleeved with a fuse inside; Features: Glass end tubes (11) are provided at both ends of the glass tube (1), a sliding groove (111) is provided on the outer wall of the glass end tube (11), and a clamping groove (113) connected to the sliding groove (111) is also provided on the outer wall of the glass end tube (11); A card-mounting seat (21) is fixedly mounted on the inner side wall of the copper cap (2); the main body of the card-mounting seat (21) is an elastic hollow block (212); a card end (213) is arranged at the bottom end of the elastic hollow block (212); and the card end (213) is compatible with the card-mounting slot (113).

2. The copper cap for a fuse according to claim 1, characterized in that: A guide groove (112) connected to the sliding groove (111) is provided at the outer edge of the glass end tube (11), and the guide groove (112) is an arc groove that gradually decreases inwards.

3. The copper cap for a fuse according to claim 1, characterized in that: The outer wall of the glass end tube (11) is provided with three groups of sliding grooves (111) distributed in an annular shape, and the glass end tube (11) is made of the same material as the glass tube (1).

4. The copper cap for a fuse according to claim 1, characterized in that: The top end of the elastic hollow block (212) is fixedly connected to the inner wall of the copper cap (2) via a mounting seat (211), and the mounting seat (211) and the copper cap (2) are assembled via screw grooves and fastening bolts.

5. The copper cap for a fuse according to claim 1, characterized in that: The elastic hollow block (212) is an oblique L-shaped block, and the clamping end (213) at the bottom end of the elastic hollow block (212) is compatible with the shape and specification of the clamping slot (113).

6. The copper cap for a fuse according to claim 1, characterized in that: The right end of the sliding groove (111) is provided with an arc-shaped portion inclined downward, and the outer wall of the elastic hollow block (212) is provided with an arc sliding portion (214) located on the top side of the clamping end (213).

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