Fuse electric connection terminal

Abstract

The utility model relates to the technical field of fuse electric connection, and particularly discloses a fuse electric connection terminal, two electric connection terminals are respectively arranged at two ends of a cylindrical fuse, the two electric connection terminals are externally connected with cables, and the two electric connection terminals are respectively arranged at two ends of the cylindrical fuse. The electric connection terminal comprises a metal base and a metal sleeve, an insulating sleeve is integrally formed outside the metal base, and a threaded hole base is fixedly arranged at the end, located in the insulating sleeve, of the metal base. According to the technical scheme of the utility model, the structure that the crown spring is embedded and assembled in the conventional wiring terminal is improved into the structure that the metal seat and the metal sleeve adopt the threaded assembly structure, so that the circuit conduction between the wiring terminal and the cylindrical fuse can be realized; and meanwhile, the problem that the crown spring is easily separated from the wiring terminal when the fuse is disassembled in the structure that the wiring terminal is embedded and assembled with the crown spring is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuse electric connection technical field, concretely to a fuse electric connection terminal. BACKGROUND

[0002] Fuse is the common component in the circuit, plays the role of overload protection, the correct installation fuse in the circuit can cut off the current when the current abnormally rises to a certain current value and heat, protects the safe operation of the circuit, the fuse is usually cylindrical, its both ends are fixed with fuse clamp / seat respectively, then is connected with the cable or other electrical structure fixed, the traditional structure has the small contact area with the end of the fuse, leads to the big resistance and the problem of easy to cause the fuse to fall off.

[0003] In the process of realizing the utility model, the inventor finds that at least the following problems in the prior art have not been solved; the above-mentioned patent scheme proposes a technical scheme of an electric connection terminal including an outer metal piece and a crown spring, but the crown spring and the outer metal piece in the technical scheme are connected in a nested manner, and the crown spring is easy to detach from the outer metal piece when the fuse is disassembled or replaced, thereby causing the crown spring to be easy to fall off and lost, which is relatively inconvenient, and only the elastic pieces on the inner wall of the crown spring can clamp the two ends of the fuse, and the fastening degree needs to be improved, therefore, the utility model provides a fuse electric connection terminal. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a fuse electric connection terminal, which solves the problems proposed in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a fuse electric connection terminal, two electric connection terminals are respectively installed at the two ends of a cylindrical fuse, and cables are connected to the outer portions of the two electric connection terminals, the two electric connection terminals are respectively installed at the two ends of a cylindrical fuse, the electric connection terminal includes a metal seat and a metal sleeve, an insulating sleeve is integrally formed on the outer portion of the metal seat, a threaded hole seat is fixedly arranged at one end of the metal seat inside the insulating sleeve, and a threaded column that is screwed with the threaded hole seat is fixedly arranged at one end of the metal sleeve facing the insulating sleeve.

[0006] An elastic metal piece is fixedly installed on the outer surface of the metal sleeve, a through hole is formed in the outer surface of the metal sleeve to accommodate the elastic metal piece, a metal short cylinder is inlaid in the inner portion of the metal sleeve, and the metal short cylinder is elastically connected with the inner wall of the metal sleeve through a spring.

[0007] As a preferred embodiment of the technical scheme of the application, the metal end head is sleeved in the metal sleeve and tightly contacts the surface of the elastic metal sheet.

[0008] As a preferred embodiment of the technical scheme of the application, the metal end head is sleeved in the metal sleeve and tightly contacts the surface of the elastic metal sheet.

[0009] As a preferred embodiment of the technical scheme of the application, the number of the elastic metal sheet and the through hole is 2-4, and the end head of the elastic metal sheet is semicircular.

[0010] As a preferred embodiment of the technical scheme of the application, the outer diameter of the metal end head is consistent with the inner diameter of the metal short cylinder, and the metal end head is pull-insertedly connected with the metal sleeve.

[0011] As a preferred embodiment of the technical scheme of the application, the axial length of the insulating sleeve is 5mm longer than the axial length of the metal sleeve, and the axial length of the metal end head is 5mm shorter than the axial length of the metal sleeve.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] 1. The technical scheme of the application improves the structure of the existing wiring terminal embedded with the crown spring to a threaded assembly structure of the metal seat and the metal sleeve, which not only enables the wiring terminal and the cylindrical fuse to realize circuit conduction, but also solves the problem that the crown spring is easily separated from the wiring terminal when the fuse is disassembled.

[0014] 2. The technical scheme of the application realizes self-adaptive elastic close contact between the elastic metal sheet and the surface of the metal end head, and cooperates with the metal short cylinder to limit the metal end head in a nested manner, compared with the existing structure of the wiring terminal embedded with the crown spring, the cooperation of the elastic metal sheet and the metal short cylinder in the present application can greatly improve the connection fastness of the cylindrical fuse and the metal sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Fig. 1 It is an explosion view of the fuse electric connection terminal of the application;

[0017] Fig. 2 It is a sectional view of the electric connection terminal of the application;

[0018] Fig. 3 It is a sectional view of the metal sleeve of the application.

[0019] In the diagram: 1. Cylindrical fuse; 101. Metal end; 2. Metal sleeve; 201. Elastic metal strip; 202. Through hole; 203. Threaded post; 3. Insulating sleeve; 4. Metal seat; 401. Threaded hole seat; 402. Threaded hole; 5. Cable; 6. Spring; 7. Short metal tube. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1, as Figs. 1-3 As shown, this utility model provides a technical solution: a fuse electrical connection terminal, two electrical connection terminals are respectively installed at both ends of a cylindrical fuse 1, and cables 5 are connected to the outside of both electrical connection terminals. The electrical connection terminal includes a metal base 4 and a metal sleeve 2. An insulating sleeve 3 is integrally formed on the outside of the metal base 4. A threaded hole seat 401 is fixedly provided at one end of the metal base 4 located inside the insulating sleeve 3. A threaded post 203 that is threadedly engaged with the threaded hole seat 401 is fixedly provided at one end of the metal sleeve 2 facing the insulating sleeve 3. A threaded hole 402 that is threadedly connected to the threaded post 203 is opened inside the threaded hole seat 401.

[0022] An elastic metal sheet 201 is fixedly installed on the outer surface of the metal sleeve 2. A through hole 202 is opened on the outer surface of the metal sleeve 2 to accommodate the elastic metal sheet 201. A metal short cylinder 7 is embedded inside the metal sleeve 2. The metal short cylinder 7 is elastically connected to the inner wall of the metal sleeve 2 by a spring 6.

[0023] In one specific embodiment of the utility model, metal seat 4 and insulating sleeve 3 adopt hot melting process connection, metal seat 4 and the wire part of cable 5 contact, four through holes 202 are opened around equidistance on the surface of metal sleeve 2, and elastic metal sheet 201 is bent towards the inside of through hole 202, the threaded column 203 of metal sleeve 2 is matched with threaded hole 402 of threaded hole seat 401, when metal end 101 is embedded in the inside of metal sleeve 2, will first contact with the end of elastic metal sheet 201, along with the continued embedding of metal end 101, the end of elastic metal sheet 201 is self-adapting elastic deformation in the process, finally metal end 101 is interference assembly to the inside of metal short cylinder 7, cylindrical fuse 1 is attached contact with elastic metal sheet 201 and metal short cylinder 7 through metal end 101, so that cylindrical fuse 1 and metal sleeve 2 establish electric connection relationship, metal sleeve 2 and threaded hole seat 401 cooperate, so that metal sleeve 2 and metal seat 4 establish electric connection relationship, to finally make cylindrical fuse 1 and cable 5 establish electric connection relationship.

[0024] In the preferred technical scheme, the both ends of cylindrical fuse 1 are fixedly provided with metal end 101, metal end 101 is sleeved in metal sleeve 2 and is attached contact with the surface of elastic metal sheet 201, when metal end 101 is embedded in the inside of metal sleeve 2, will first contact with the end of elastic metal sheet 201, along with the continued embedding of metal end 101, the end of elastic metal sheet 201 is self-adapting elastic deformation in the process, elastic metal sheet 201 not only plays the role of clamping metal end 101, but also plays the role of electric connection.

[0025] In the preferred technical scheme, metal end 101 is sleeved in metal sleeve 2 and is embeddedly connected with metal short cylinder 7, the external diameter of metal end 101 is consistent with the internal diameter of metal short cylinder 7, metal end 101 is pull-insertedly connected with metal sleeve 2, metal end 101 is embeddedly assembled to the inside of metal short cylinder 7, which can improve the fastening degree of metal end 101 and metal sleeve 2.

[0026] In the preferred technical scheme, the number of elastic metal sheet 201 and through hole 202 is 4, the end of elastic metal sheet 201 is semicircular, and setting 4 elastic metal sheets 201 can improve the contact area of elastic metal sheet 201 and cylindrical fuse 1 and improve elastic metal sheet 201.

[0027] In the preferred technical scheme, the axial length of insulating sleeve 3 is 5mm longer than the axial length of metal sleeve 2, so that the insulating sleeve 3 can completely cover the metal sleeve 2, the axial length of metal end 101 is 5mm shorter than the axial length of metal sleeve 2, so that the metal sleeve 2 can completely cover the metal end 101, so that the insulating sleeve 3 can wrap the conductive area of the cylindrical fuse.

[0028] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A fuse electrical connection terminal, wherein two electrical connection terminals are respectively installed at both ends of a cylindrical fuse (1), and both electrical connection terminals are externally connected to a cable (5), characterized in that: The electrical connection terminal includes a metal base (4) and a metal sleeve (2). The metal base (4) is integrally formed with an insulating sleeve (3). A threaded hole seat (401) is fixedly provided at one end of the metal base (4) inside the insulating sleeve (3). A threaded post (203) that is threadedly engaged with the threaded hole seat (401) is fixedly provided at one end of the metal sleeve (2) facing the insulating sleeve (3). An elastic metal sheet (201) is fixedly installed on the outer surface of the metal sleeve (2). A through hole (202) is opened on the outer surface of the metal sleeve (2) to accommodate the elastic metal sheet (201) extending in. A metal short cylinder (7) is embedded inside the metal sleeve (2). The metal short cylinder (7) is elastically connected to the inner wall of the metal sleeve (2) by a spring (6).

2. A fuse electrical connection terminal according to claim 1, characterized in that: The cylindrical fuse (1) has metal ends (101) fixedly installed at both ends. The metal ends (101) are sleeved inside the metal sleeve (2) and are in close contact with the surface of the elastic metal sheet (201).

3. A fuse electrical connection terminal according to claim 2, characterized in that: The metal end (101) is fitted inside the metal sleeve (2) and is embedded and connected to the metal short cylinder (7).

4. A fuse electrical connection terminal according to claim 1, characterized in that: The number of the elastic metal sheet (201) and the through hole (202) is set to 2 to 4, and the end shape of the elastic metal sheet (201) is semi-circular.

5. A fuse electrical connection terminal according to claim 2, characterized in that: The outer diameter of the metal end (101) is consistent with the inner diameter of the metal short cylinder (7), and the metal end (101) is plugged into the metal sleeve (2).

6. A fuse electrical connection terminal according to claim 2, characterized in that: The axial length of the insulating sleeve (3) is 5 mm longer than that of the metal sleeve (2), and the axial length of the metal end (101) is 5 mm shorter than that of the metal sleeve (2).

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