Multi-strand wire pin temperature fuse and equipment

Abstract

The utility model relates to the technical field of fuses, in particular to a multi-strand wire pin temperature fuse and equipment. The fuse comprises a shell and pins, a fusible core is arranged in the shell, the pins comprise a first pin and a second pin, and the tail end of the first pin and the tail end of the second pin form an integrated first connector and an integrated second connector respectively; therefore, the integrated first connector and the integrated second connector which are smooth in surface and free of gaps are formed after the multiple strands of wires in the first pin and the second pin are subjected to the processes of fusion welding, extrusion and the like. The first joint and the second joint can be directly welded with the fusible core, so that the technical problem that a plurality of strands of scattered wires cannot be directly welded with the fusible core in a conventional state is solved, and a conventional secondary welding mode through an external terminal is abandoned.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fuse, especially to a multi-strand pin temperature fuse and equipment. BACKGROUND

[0002] Temperature fuse is also called thermal fuse, which can cut off the circuit to avoid safety accidents by overheating generated in abnormal operation of current or temperature induction electrical appliances. At present, most of the conventional multi-strand pin temperature fuses on the market are connected by welding external terminals to external multi-strand pin, which belongs to external terminal mode. For example, Chinese patent CN207097772U discloses an alloy type temperature fuse, which is electrically connected by "combined pin". However, this mode has the following shortcomings:

[0003] 1. External welding needs additional welding process, which increases production cost and reduces production efficiency. The quality of welding directly affects the function of the product, and excessive heat during welding may also cause the alloy inside the fuse to melt prematurely or the pin to fall off due to poor welding.

[0004] 2. The external welding completion needs to be additionally covered with an insulating covering member such as a heat shrink tube, which further increases the production process and production cost.

[0005] Therefore, a temperature fuse that can eliminate the above-mentioned shortcomings and meet the requirements of low cost and rapid production is needed.

[0006] It should be noted that the information disclosed in this background section is only intended to increase the understanding of the overall background of the utility model and should not be considered as acknowledging or implying in any form that this information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0007] To solve the technical problems of the above-mentioned conventional multi-strand pin temperature fuse, the utility model provides a multi-strand pin temperature fuse, which comprises a shell and a pin.

[0008] The pin comprises a first pin and a second pin, both of which are composed of multi-strand wires. The ends of the first pin and the second pin form a first joint and a second joint, respectively. The first joint and the second joint extend into the shell and are connected to the fuse core, respectively.

[0009] Among them, the first joint and the second joint are integrated joints.

[0010] Further, the first joint is formed by fusion welding of the multi-strand wires of the first pin, and the second joint is formed by fusion welding of the multi-strand wires of the second pin.

[0011] Further, the first joint and the second joint are one of cuboid, cylindrical, arc or polygonal.

[0012] Further, the first joint and the second joint are made of copper or copper alloy.

[0013] Further, when the first joint extends into the shell and communicates with the core, the first joint is not in the same straight line with the other end of the first pin, and when the second joint extends into the shell and communicates with the core, the second joint is not in the same straight line with the other end of the second pin.

[0014] Further, the shell comprises a shell body and an upper cover, the shell body is provided with a melting cavity and a first sealing cavity, the core is located in the melting cavity, a first guide hole is opened between the melting cavity and the first sealing cavity, the first joint and the second joint extend into the melting cavity through the first guide hole and respectively communicate with the core, and the upper cover is connected to the shell body.

[0015] Further, the melting cavity is filled with a flux breaking agent.

[0016] Further, the first sealing cavity is filled with a sealing material, the first pin and the second pin are coated with an insulating layer, and when the first joint and the second joint extend into the melting cavity, the sealing material at least wraps part of the insulating layer.

[0017] Further, the multi-strand pin temperature fuse further comprises a second sealing cavity, the second sealing cavity is arranged on the side of the melting cavity away from the first sealing cavity, a second guide hole is arranged between the second sealing cavity and the melting cavity, and the second sealing cavity is filled with a sealing material.

[0018] Further, the multi-strand pin temperature fuse further comprises a communication module, the shell body is provided with a communication cavity, the communication module is located in the communication cavity, and the communication cavity is mutually isolated from the melting cavity and the first sealing cavity and / or the second sealing cavity.

[0019] Further, the utility model further provides a kind of equipment, comprising the multi-strand pin temperature fuse described in any one of the above.

[0020] Based on the above, the multi-strand wire pin temperature fuse and the equipment provided by the utility model, compared with the prior art, the first joint and the second joint which are integral and have smooth surfaces and no gaps are formed by the processes of fusion welding and extrusion on the multi-strand wires in the first pin and the second pin. The first joint and the second joint can be directly welded with the fuse core, so as to solve the technical problem that the multi-strand loose wires cannot be directly welded with the fuse core in the conventional state, abandon the conventional secondary welding mode through the external terminal, thereby avoiding the influence of secondary welding on the function of the fuse itself, and greatly improving the production efficiency and reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor. In the following description, the positional relationship described in the drawings is based on the direction of the components shown in the drawings as the reference.

[0022] Figure 1 The exploded structural schematic view of the multi-strand wire pin temperature fuse provided by one embodiment of the utility model is shown in the figure.

[0023] Figure 2 The structural schematic view of the shell provided by one embodiment of the utility model is shown in the figure.

[0024] Figure 3 The structural schematic view of the shell provided by the second embodiment of the utility model is shown in the figure.

[0025] Figure 4 The structural schematic view of the shell provided by the third embodiment of the utility model is shown in the figure.

[0026] Figure 5 The structural schematic view of the shell provided by the fourth embodiment of the utility model is shown in the figure.

[0027] Reference signs:

[0028] DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments but not all of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0030] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more. In addition, the term "comprising" and any variation thereof means "at least including".

[0031] Please refer to Figure 1 and Figure 2 , Figure 1 The exploded structural schematic view of the multi-strand pin temperature fuse provided by an embodiment of the present application is shown in the figure. Figure 2 The structural schematic view of the shell provided by an embodiment of the present application is shown in the figure.

[0032] To solve the technical problem of the defects of the conventional multi-strand pin temperature fuse, or to achieve at least one of the above advantages or other advantages, an embodiment of the present application provides a multi-strand pin temperature fuse. As shown in the figure, the multi-strand pin temperature fuse comprises a shell 10 and a pin 20. The inside of the shell 10 is provided with a fuse core 30.

[0033] The pin 20 comprises a first pin 21 and a second pin 22. The first pin 21 and the second pin 22 are both collected by multi-strand wire bunching, weaving or winding, and the embodiment adopts the bunching mode. Preferably, the outer side of the first pin 21 and the second pin 22 is covered with an insulating layer 40.

[0034] In specific implementation, the end of the first pin 21 and the end of the second pin 22 form an integrated first connector 50 and an integrated second connector 60, respectively. The first connector 50 and the second connector 60 can directly extend into the shell 10 and be welded with the fuse core 30, respectively, so as to achieve the purpose of not needing secondary welding through external terminals, avoid the influence of secondary welding on the function of the fuse itself, and greatly improve the production efficiency and reduce the production cost.

[0035] Specifically, the first connector 50 is formed by the end of the first pin 21, exposing the plurality of wires after stripping the insulating layer 40, and then performing processes such as fusion welding and extrusion (conventional technical means) to form an integrated connector with a smooth surface and no gap. The second connector 60 is the same. This solves the technical problem that the plurality of scattered wires cannot be directly welded with the fuse core 30 in the conventional state.

[0036] It should be noted that the first connector 50 and the second connector 60 can be fusion welded by resistance welding, ultrasonic welding, etc. or formed by mechanical means such as extrusion, as long as an integrated connector with a smooth surface and no gap can be formed, which is not limited in the present case.

[0037] In some preferred embodiments, the first connector 50 and the second connector 60 are one of a rectangular shape, a cylindrical shape, an arc shape, or a polygonal shape, which can be designed according to requirements in actual application, and is not limited herein. Preferably, the first connector 50 and the second connector 60 are in a rectangular shape, which has a larger welding area and can be more stably welded with the fuse core 30, and at the same time provides a larger adsorption area for the fuse core 30 when it is melted, to ensure that the fuse core 30 is completely cut off after melting.

[0038] Preferably, the material of the first connector 50 and the second connector 60 can be copper or copper alloy, which has high reliability in welding with the fuse core 30.

[0039] Preferably, the material of the first connector 50 and the second connector 60 can be copper or copper alloy, which has high reliability in welding with the fuse core 30. The plurality of wires of the first pin 21 other than the first connector 50 and the plurality of wires of the second pin 22 other than the second connector 60 can be any conductive material, such as aluminum, copper, silver, etc. When the first connector 50 and the plurality of wires of the first pin 21 other than the first connector 50 are different materials, they can be connected by pressure welding, insertion, etc. without welding. The second connector 60 and the second pin 22 other than the second connector 60 are the same.

[0040] The first end 70 is connected to the end of the first pin 21 away from the first connector 50. The second end 80 is connected to the end of the second pin 22 away from the second connector 60. The multi-strand wire pin temperature fuse can be connected to a circuit through the first end 70 and the second end 80. The first end 70 and the second end 80 in the embodiment are provided with screw holes, and the circuit is connected by screwing, which is convenient to operate.

[0041] In some preferred embodiments, the shell 10 comprises a housing 11 and a cover 12. In particular implementation, the housing 11 is respectively provided with a melting cavity 111 and a first sealing cavity 112.

[0042] Specifically, the fuse core 30 is arranged in the melting cavity 111. A first guide hole 113 is opened between the melting cavity 111 and the first sealing cavity 112. The first connector 50 and the second connector 60 extend into the melting cavity 111 through the first guide hole 113, and the first connector 50 and the second connector 60 are respectively welded to the two ends of the fuse core 30. The melting cavity 111 is filled with a fluxing agent. When overcurrent or overtemperature occurs, the fluxing agent can make the fuse core 30 melt more quickly, thereby cutting off the circuit and avoiding the occurrence of safety accidents.

[0043] The first sealing cavity 112 is filled with a sealing material. When the first connector 50 and the second connector 60 extend into the melting cavity 111, the sealing material at least wraps part of the insulating layer 40. That is, when the first connector 50 and the second connector 60 extend into the melting cavity 111 and are welded to the fuse core 30, the insulating layer 40 wrapped on the first pin 21 and the second pin 22 at least partially locates in the first sealing cavity 112. At this time, the sealing material is filled in the first sealing cavity to complete sealing, and the insulating layer 40 is at least partially wrapped by the sealing material, so that the first pin 21 and the second pin 22 are completely insulated from the outside, without the need for additional wrapping of an insulating wrapping member such as a heat shrink tube, which can greatly reduce the production process and reduce the production cost. Preferably, the sealing material is resin.

[0044] On the basis of the above, the cover 12 is connected to the housing 11. When the first connector 50 and the second connector 60 are welded to the fuse core 30 and the fluxing agent is filled, the cover 12 is covered on the housing 11 to form an integral shell.

[0045] It can be understood that the shell 10 can be made of different materials such as plastic and ceramic. Also, the shell 10 can be made into different structures such as an open-end type, an up-down opening and closing type, and a left-right opening and closing type. When the up-down opening and closing type or the left-right opening and closing type is adopted, the cover 12 and the housing 11 can be combined by different forms such as ultrasonic welding and resin bonding, which is not limited in the present case.

[0046] In some preferred embodiments, when the first joint 50 extends into the melting cavity 111 through the first guide hole 113 and communicates with the core 30, the other end of the first joint 50 is not in the same straight line as the first pin 21. That is, when the first joint 50 is welded to the core 30, it is bent and deflected, and at this time the other end of the first joint 50 is not in the same straight line as the first pin 21 away from the other end of the first joint 50. This can improve the tensile strength and prevent the first joint 50 from being separated from the core 30 due to tension. Even if the sealing material softens in a high temperature environment, it can ensure the stable connection of the first joint 50 and the core 30.

[0047] When the second joint 60 extends into the melting cavity 111 through the first guide hole 113 and communicates with the core 30, the other end of the second joint 60 is not in the same straight line as the second pin 22. That is, when the second joint 60 is welded to the core 30, it is bent and deflected, and at this time the other end of the second joint 60 is not in the same straight line as the second pin 22 away from the other end of the second joint 60. This can improve the tensile strength and prevent the second joint 60 from being separated from the core 30 due to tension. Even if the sealing material softens in a high temperature environment, it can ensure the stable connection of the second joint 60 and the core 30.

[0048] It should be understood that the above scheme is a preferred scheme of the present embodiment. In actual application scenarios, the first joint 50 and the second joint 60 can also be in the same straight line as the first pin 21 and the second pin 22, or the first joint 50 and the first pin 21 can be in the same straight line, and the second joint 60 and the second pin 22 are not in the same straight line, or vice versa. It can be adjusted according to actual needs, and it is within the protection scope of the present application.

[0049] In some preferred embodiments, as shown in Figure 2 , the first joint 50 and the second joint 60 are bent and deflected simultaneously towards the core 30. At this time, the first joint 50 and the second joint 60 are symmetrically arranged at both ends of the core 30. It can be understood that the first joint 50 and the second joint 60 can also be bent and deflected simultaneously away from the core 30.

[0050] In some preferred embodiments, as shown in Figure 3 , the first joint 50 and the second joint 60 can be bent and deflected simultaneously to the same side.

[0051] In some preferred embodiments, as shown in Figure 4 , the multi-strand pin temperature fuse further comprises a second sealing cavity 114. The second sealing cavity 114 is arranged on the side of the melting cavity 111 away from the first sealing cavity 112, and a second guide hole 115 is arranged between the second sealing cavity 114 and the melting cavity 111. The second sealing cavity 114 is filled with sealing material.

[0052] In the implementation, the multi-strand pin temperature fuse can be an axial type, i.e., the first pin 21 and the second pin 22 are oppositely arranged on two sides of the melting cavity 111. The first connector 50 extends into the melting cavity 111 through the first guide hole 113, is bent and deflected, and is welded with the fuse core 30. At this time, the insulating layer 40 outside the first pin 21 is at least partially located in the first sealing cavity 112 and is covered by the sealing material.

[0053] The second connector 60 extends into the melting cavity 111 through the second guide hole 115, is bent and deflected, and is welded with the fuse core 30. At this time, the insulating layer 40 of the second pin 22 is at least partially located in the second sealing cavity 114 and is covered by the sealing material.

[0054] In some preferred embodiments, as shown in the drawings, the multi-strand pin temperature fuse further comprises a communication module 90. In the implementation, the housing 11 is provided with a communication cavity 116. The communication module 90 is arranged in the communication cavity 116. The communication cavity 116 is isolated from the melting cavity 111 and the first sealing cavity 112 and / or the second sealing cavity 114. The communication module 90 can identify the presence or absence of a signal or whether the signal is correct. Figure 5

[0055] In some preferred embodiments, the communication cavity 116 is filled with an elastic material to avoid damage to the communication module 90 caused by thermal expansion and contraction of the sealing material during use. Preferably, the elastic material is one of silicone, polyurethane glue, or flexible epoxy resin.

[0056] In some preferred embodiments, the utility model further provides a device comprising the above-mentioned multi-strand pin temperature fuse.

[0057] In summary, the multi-strand pin temperature fuse and the device provided by the utility model have the following advantages. Compared with the prior art, the multi-strand pin temperature fuse and the device provided by the utility model can form an integral first connector and an integral second connector by melting and welding or extruding the multi-strand wires in the first pin and the second pin. The first connector and the second connector can be directly welded with the fuse core, thereby solving the technical problem that the multi-strand wires in the conventional state cannot be directly welded with the fuse core. The utility model discards the conventional secondary welding mode through an external terminal, thereby avoiding the influence of secondary welding on the function of the fuse itself and greatly improving the production efficiency and reducing the production cost.

[0058] Although the terms such as pin, integral connector, and the like are used more frequently in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; any interpretation of them as any kind of additional limitation is contrary to the spirit of the utility model.

[0059] ​In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present application can only be improved in one or several aspects, and it is not necessary to solve all the technical problems listed in the prior art or background art at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be regarded as a limitation of the claim.

[0060] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-strand pin temperature fuse, characterized by: The shell is internally provided with a fuse core; The pin comprises a first pin and a second pin, both of which are composed of a plurality of wires, and the ends of the first pin and the second pin form a first joint and a second joint respectively, which extend into the shell and are respectively communicated with the fuse core; The first joint and the second joint are one-piece joints. The first joint is formed by fusion welding of the plurality of wires of the first pin, and the second joint is formed by fusion welding of the plurality of wires of the second pin.

2. The multi-strand pin temperature fuse of claim 1, wherein: The first joint and the second joint are one of rectangular, cylindrical, arc-shaped or polygonal.

3. The multi-strand pin temperature fuse of claim 1, wherein: The first joint and the second joint are made of copper or copper alloy.

4. The multi-strand pin temperature fuse of claim 1, wherein: When the first joint extends into the shell and is communicated with the fuse core, the other end of the first pin is not in the same straight line as the first joint, and when the second joint extends into the shell and is communicated with the fuse core, the other end of the second pin is not in the same straight line as the second joint.

5. The multi-strand pin temperature fuse of claim 1, wherein: The shell comprises a shell body and an upper cover, the shell body is provided with a melting cavity and a first sealing cavity, the fuse core is located in the melting cavity, a first guide hole is opened between the melting cavity and the first sealing cavity, the first joint and the second joint extend into the melting cavity through the first guide hole and are respectively communicated with the fuse core, and the upper cover is connected to the shell body.

6. The multi-strand pin temperature fuse of claim 1, wherein: The melting cavity is filled with a fluxing agent.

7. The multi-strand pin temperature fuse of claim 6, wherein: The first sealing cavity is filled with a sealing material, the first pin and the second pin are coated with an insulating layer, and when the first joint and the second joint extend into the melting cavity, the sealing material at least wraps part of the insulating layer.

8. The multi-strand pin temperature fuse of claim 6, wherein: The multi-strand wire pin temperature fuse further comprises a second sealing cavity, which is arranged on the side of the melting cavity away from the first sealing cavity, a second guide hole is arranged between the second sealing cavity and the melting cavity, and the second sealing cavity is filled with a sealing material.

9. The multi-strand pin temperature fuse of claim 6, wherein: The multi-strand wire pin temperature fuse further comprises a communication module, the shell body is provided with a communication cavity, the communication module is located in the communication cavity, and the communication cavity is isolated from the melting cavity and the first sealing cavity and / or the second sealing cavity.

10. The multi-strand pin temperature fuse of claim 6, wherein: The multi-strand wire pin temperature fuse as claimed in any one of claims 1-10.

11. An apparatus, comprising: ​

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