Protective tube with wiring terminal

Abstract

The utility model discloses a protective tube with wiring terminals, which comprises a ceramic tube, a thermal fuse is arranged in the ceramic tube, two ends of the ceramic tube are provided with inner conducting rings, the periphery of each inner conducting ring is sleeved with a conducting cap, the periphery of each conducting cap is sleeved with a wiring terminal, one end portion of each wiring terminal extends to the outer side of the conducting cap, and the other end portion of each wiring terminal extends to the outer side of the conducting cap. And a wiring end part capable of fixing a cable is arranged on each of the wiring terminals. According to the utility model, the wiring terminals are arranged at the two ends of the ceramic tube in which the thermal fuse is arranged, and the conductive caps are arranged between the inner conductive rings connected with the thermal fuse and the wiring terminals, so that the thermal fuse can be completely wrapped in the fuse tube to avoid the influence of external foreign matters on connection points at the two ends of the thermal fuse, and stable circuit communication between the wiring terminals and the thermal fuse can be ensured; the wiring terminal is safe to use, line connection is not easy to loosen, the wiring end part can be guided to a proper position for wiring operation by changing the shape of the terminal body on the wiring terminal, the space can be effectively utilized, and wiring is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fuse tubes, and particularly relates to a fuse tube with a terminal. Background Art

[0002] A fuse tube is an important protective component on electrical products. Generally, cables are connected to both ends, and a thermal fuse is provided in the middle. Its structural shape varies according to different application scenarios. In actual use, two problems often occur. One is that the connection between the fuse tube and the cable needs to be fixed by means of a locking part, which not only requires reserving an operating space for the locking part, but also is prone to loosening and wire disconnection problems caused by various subjective and objective factors. The other is that it is difficult to intuitively find out whether the circuit is disconnected due to the loosening of the cable or the melting of the thermal fuse, and the problem is generally solved by replacing the fuse tube, which is time-consuming, laborious and causes unnecessary waste. Content of the Utility Model

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a fuse tube with a terminal, which can completely wrap the thermal fuse in the fuse tube to avoid the influence of foreign objects on the connection points at both ends of the thermal fuse, and ensure stable electrical connection between the terminal and the thermal fuse, with safe use and not easy to loosen the wire connection, effectively utilizing the space and convenient wiring.

[0004] To solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A fuse tube with a terminal includes a ceramic tube and terminals provided at both ends thereof, wherein:

[0006] A thermal fuse is provided in the ceramic tube, and inner conductive rings are provided at both ends thereof. Each inner conductive ring is electrically connected to one end of the thermal fuse;

[0007] A conductive cap is sleeved outside each inner conductive ring, a terminal is sleeved outside each conductive cap, one end of each terminal extends to the outside of the conductive cap, and a wiring end for fixing a cable is provided thereon.

[0008] As a further elaboration of the above technical solution:

[0009] In the above technical solution, the thermal fuse is fixedly welded to each inner conductive ring.

[0010] In the above technical solution, each conductive cap is fixedly welded to each terminal.

[0011] In the above technical solution, a solderable metal layer is provided on both the inner conductive ring and the conductive cap, or at least a corrosion-resistant metal layer is provided at the connecting end of the inner conductive ring and the thermal fuse, and at the connecting end of the conductive cap and the wiring terminal.

[0012] In the above technical solution, the wiring terminal includes a terminal body, a conductive end portion provided at both ends thereof, and the wiring end portion. The conductive end portion is a ring-shaped structure or an arc-shaped structure that can be buckled into a ring. The wiring end portion is a U-shaped structure. The terminal body is one of a straight-shaped structure, a Z-shaped structure, and a bent structure. The wiring end portion, the terminal body, and the conductive end portion are integrally formed.

[0013] In the above technical solution, the wiring end portion includes a wire pressing portion and a welding portion that are arranged along its extending direction and are both in a U-shaped structure. The heights of the two opposite side walls of the wire pressing portion are greater than the heights of the two opposite side walls of the welding portion. A plurality of anti-detachment protrusions are formed on the inner wall of the bottom of the welding portion. The anti-detachment protrusions are integrally formed with the wiring end portion.

[0014] In the above technical solution, the welding portion is provided with a solderable metal layer.

[0015] In the above technical solution, it further includes an insulating sleeve sleeved on the outer periphery of the ceramic tube and the two wiring terminals and fixedly connected or detachably fixedly connected thereto. Both of the wiring end portions extend to the outside of the insulating sleeve.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing wiring terminals at both ends of the ceramic tube with an internal thermal fuse, and providing a conductive cap between the inner conductive ring connecting the thermal fuse and the wiring terminal, the thermal fuse can be completely wrapped in the fuse tube to avoid the influence of external foreign objects on the connection points at both ends of the thermal fuse, and the stable electrical connection between the wiring terminal and the thermal fuse can be ensured. The use is safe and the circuit connection is not easily loosened. Moreover, by changing the shape of the terminal body at the upper end of the wiring terminal, the wiring end portion can be guided to an appropriate position for wiring operation, which can effectively utilize the space and the wiring is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of this embodiment (the insulating sleeve is not shown);

[0018] Figure 2 is an exploded structural diagram of this embodiment;

[0019] Figure 3 is a schematic structural diagram of the wiring terminal in this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described in detail below with reference to the drawings.

[0021] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "several" and "multiple" is two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0022] As Figures 1 - 3 shown, a fuse tube with a terminal includes a ceramic tube 10 and terminals 20 provided at both ends thereof, wherein:

[0023] A thermal fuse 30 is provided inside the ceramic tube 10, and inner conductive rings 40 are provided at both ends thereof. Each inner conductive ring 40 is electrically connected to one end of the thermal fuse 30;

[0024] A conductive cap 50 is sleeved on the periphery of each inner conductive ring 40, a wiring terminal 20 is sleeved on the periphery of each conductive cap 50, one end of each wiring terminal 20 extends to the outside of the conductive cap 50, and a wiring end 21 capable of fixing a cable is provided thereon.

[0025] Further, the thermal fuse 30 is fixedly welded to each inner conductive ring 40, and each conductive cap 50 is fixedly welded to each wiring terminal 20.

[0026] In this embodiment, the inner conductive rings 40 are press-fitted and fastened to both ends of the ceramic tube 10, and the conductive caps 50 are welded to the periphery of the inner conductive rings 40 by a percussion welding process.

[0027] Further, an easily weldable metal layer is provided on both the inner conductive ring 40 and the conductive cap 50, or at least a corrosion-resistant metal layer is provided at the connecting ends of the inner conductive ring 40 and the thermal fuse 30 and at the connecting ends of the conductive cap 50 and the wiring terminal 20.

[0028] In this embodiment, the connecting ends of the inner conductive ring 40, the conductive cap 50 and the wiring terminal 20 are electroplated with a nickel layer.

[0029] Further, the wiring terminal 20 includes a terminal body 22, conductive ends 23 provided at both ends thereof, and a wiring end 21. The conductive ends 23 are in a ring structure or an arc structure that can be buckled into a ring. The wiring end 21 is in a U-shaped structure. The terminal body 22 is in one of a straight structure, a Z-shaped structure, and a bent structure. The wiring end 21, the terminal body 22 and the conductive ends 23 are integrally formed.

[0030] Further, the wiring end 21 includes a wire pressing portion 1 and a welding portion 2 that are both arranged along its extending direction and are both in a U-shaped structure. The heights of the two opposite side walls of the wire pressing portion 1 are greater than the heights of the two opposite side walls of the welding portion 2. A plurality of anti-loosening protrusions 3 are formed on the inner wall of the bottom of the welding portion 2. The anti-loosening protrusions 3 are integrally formed with the wiring end 21.

[0031] The wiring terminal 20 belongs to the prior art. It is made of a conductive material by itself. One end clamps and fixes a cable and is connected to its internal core wire, and the other end is connected and fixed to a power-taking product to realize circuit conduction. In this embodiment, a wire pressing portion 1, a welding portion 2 and anti-loosening protrusions 3 are provided at the wiring end 21, and the outer sheath and the core wire of the cable can be respectively clamped by clamping two U-shaped grooves, so as to avoid or slow down the loosening of the cable.

[0032] Further, the welding portion 2 is provided with an easily weldable metal layer.

[0033] In this embodiment, the wiring ends 21 are all electroplated with a tin layer, which is not only easy for welding the core wire of the circuit, but also has good glossiness, improving the appearance quality of the product.

[0034] Further, it further includes an insulating sleeve 60 sleeved on the periphery of the ceramic tube 10 and the two wiring terminals 20 and fixedly connected or detachably fixed thereto, and both wiring ends 21 extend to the outside of the insulating sleeve 60.

[0035] In this embodiment, the insulating sleeve 60 is made of transparent PVC material and has an openable structure. Both of its ends extend to the periphery of the welding part 2, facilitating visually checking the connection of the core wire and the wiring terminal 20 on the two welding parts 2 from the outside, so as to open the insulating sleeve 60 to reinforce the connection of the cable when the core wire welding part becomes loose, avoiding or reducing the open circuit phenomenon caused by abnormal line connection and reducing unnecessary waste of the fuse tube.

[0036] In the present utility model, wiring terminals 20 are provided at both ends of the ceramic tube 10 with the thermal fuse 30 installed inside, and a conductive cap 50 is provided between the inner conductive ring 40 connected to the thermal fuse 30 and the wiring terminal 20. This can not only completely wrap the thermal fuse inside the fuse tube to avoid the influence of external foreign objects on the connection points at both ends of the thermal fuse 30, but also ensure stable electrical connection between the wiring terminal 20 and the thermal fuse 30, with safe use and the line connection not easily becoming loose. Moreover, by changing the shape of the terminal body 22 at the upper end of the wiring terminal 20, the wiring end 21 can be guided to an appropriate position for wiring operation, effectively utilizing the space and facilitating wiring.

[0037] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A fuse tube with a terminal, characterized in that, It includes a ceramic tube and terminal blocks provided at both ends thereof, wherein: A thermal fuse is provided inside the ceramic tube, and inner conductive rings are provided at both ends thereof. Each of the inner conductive rings is electrically connected to one end of the thermal fuse; A conductive cap is sleeved outside the periphery of each of the inner conductive rings, a terminal block is sleeved outside the periphery of each of the conductive caps, one end of each of the terminal blocks extends to the outside of the conductive cap, and a wiring end portion capable of fixing a cable is provided thereon.

2. The fuse tube with a terminal according to claim 1, characterized in that, The thermal fuse is fixedly welded to each of the inner conductive rings.

3. The fuse tube with a terminal according to claim 1, characterized in that, Each of the conductive caps is fixedly welded to each of the terminal blocks.

4. The fuse tube with a terminal according to claim 1, characterized in that, An easy-to-weld metal layer is provided on both the inner conductive ring and the conductive cap, or at least a corrosion-resistant metal layer is provided at the connection end portions of the inner conductive ring and the thermal fuse and at the connection end portions of the conductive cap and the terminal block.

5. The fuse tube with a terminal according to claim 1, wherein The terminal block includes a terminal body and conductive end portions and the wiring end portion provided at both ends thereof. The conductive end portion is a ring-shaped structure or an arc-shaped structure that can be buckled into a ring. The wiring end portion is a U-shaped structure. The terminal body is one of a straight-shaped structure, a Z-shaped structure, and a bent structure. The wiring end portion, the terminal body, and the conductive end portion are integrally formed.

6. The fuse tube with a terminal according to claim 5, characterized in that, The wiring end portion includes a wire pressing portion and a welding portion that are arranged along its extending direction and are both in a U-shaped structure. The heights of the two opposite side walls of the wire pressing portion are greater than the heights of the two opposite side walls of the welding portion. A plurality of anti-detachment protrusions are formed on the inner wall of the bottom of the welding portion, and the anti-detachment protrusions are integrally formed with the wiring end portion.

7. The fuse tube with a terminal according to claim 6, characterized in that The welding portion is provided with an easy-to-weld metal layer.

8. A fuse tube with a terminal according to any one of claims 1-7, characterized in that It further includes an insulating sleeve sleeved outside the ceramic tube and the two terminal blocks and fixedly connected or detachably fixedly connected thereto. Both of the wiring end portions extend to the outside of the insulating sleeve.

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