Fuse type resistor

Abstract

The utility model relates to a fuse type resistor. The fuse type resistor comprises a base part, a first lead end and a second lead end, wherein the first lead end and the second lead end are fixed on the base part; the resistance wire is arranged on the base part, and one end of the resistance wire is connected with the first lead end; the fuse is arranged on the carrying part; the carrying part is provided with at least two conductive parts which are connected with the two ends of the fuse respectively, the carrying part is detachably connected with the base part, and the two conductive parts are in contact conduction with the second lead wire end and the other end of the resistance wire respectively. The base part and the carrying part which are detachably connected are configured, so that the fuse and the resistance wire can be integrally assembled, meanwhile, the requirement for separation of the fuse and the resistance wire is met, the fuse part can be independently replaced in the using process, meanwhile, the whole machining and manufacturing process is simpler through a detachable mode, and the cost is reduced. And the cost is lower.

Description

Technical Field

[0001] This application belongs to the technical field of resistors, and specifically relates to a fuse-type resistor. Background Art

[0002] Currently, the surface-mounted components in a circuit are installed with the fuse and resistor separately, which easily results in too many components in the circuit, thus increasing the complexity of the circuit. For this, after retrieval, a Chinese utility model patent with the publication number CN216849519U once disclosed a new type of surface-mounted fuse resistor. By connecting the resistance wire and the fuse in series and encapsulating the two components into a whole through the combination of a ceramic rod and resin, the dual-use effect is achieved, so that the number of circuit components can be simplified when used in a power supply circuit. For this, the inventor believes that this patent still has certain drawbacks. Since the fuse and the resistance wire are integrally encapsulated, when the fuse melts and needs to be replaced, the entire resistor needs to be replaced, which will increase the usage cost. Summary of the Invention

[0003] The purpose of this part is to outline some aspects of the embodiments of this application and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the specification of this application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of this application.

[0004] In view of the following technical problems in the prior art: there is a lack of a component in the current technology that can combine the functions of a resistor and a fuse and can simultaneously replace the fuse separately. To solve this technical problem, this application provides the following technical solutions:

[0005] A fuse-type resistor, comprising:

[0006] A base, and a first lead end and a second lead end fixed on the base;

[0007] A resistance wire, arranged on the base, one end of which is connected to the first lead end;

[0008] A mounting part and a fuse arranged on the mounting part;

[0009] Wherein, there are at least two conductive parts on the mounting part, which are respectively connected to both ends of the fuse. The mounting part is detachably connected to the base, and the two conductive parts are respectively in contact conduction with the second lead end and the other end of the resistance wire.

[0010] As a preferred technical solution of a fuse-type resistor, the base is columnar, the resistance wire is spirally encapsulated inside the base and is coaxial with the base.

[0011] As a preferred technical solution of a fuse-type resistor, an installation cavity is provided on the base, and when the mounting part is connected to the base, the mounting part is located in the installation cavity.

[0012] As a preferred technical solution of a fuse-type resistor, the base includes:

[0013] An outer housing, which has a columnar structure, the installation cavity is formed on the outer housing, and the resistance wire is encapsulated in the outer housing;

[0014] A first conductive part and a second conductive part, which are arranged in the installation cavity, are respectively connected to one end of the resistance wire and the second lead end, and are used to contact the two conductive parts.

[0015] As a preferred technical solution of a fuse-type resistor, the installation cavity extends linearly along the axis direction of the outer housing, the mounting part has a length direction, and the first conductive part and the second conductive part are respectively arranged at both ends of the installation cavity.

[0016] As a preferred technical solution of a fuse-type resistor, the first conductive part is arranged at the port of the installation cavity and is detachably connected to one of the conductive parts.

[0017] As a preferred technical solution of a fuse-type resistor, the mounting part includes:

[0018] A support body, which has a length direction, and the fuse is arranged on the support body;

[0019] A first contact part, which is arranged at one end of the support body, is connected to one end of the fuse, and is in threaded cooperation with the first conductive part.

[0020] As a preferred technical solution of a fuse-type resistor, the mounting part further includes a hand-held body, which is fixedly connected to the first contact part and seals the port of the installation cavity.

[0021] As a preferred technical solution of a fuse-type resistor, the second conductive part includes:

[0022] A first plate body, which is connected to the second lead end and abuts against the inner wall of the bottom of the installation cavity;

[0023] A second plate body, which is connected to the first plate body through a spring assembly;

[0024] Wherein, the mounting part further includes a second contact part, which is used to contact the second plate body.

[0025] As a preferred technical solution of a fuse-type resistor, a sealing cavity is formed in the support body, and at least part of the fuse is located in the sealing cavity.

[0026] The beneficial effects of the fuse-type resistor provided by this application are as follows: By configuring a detachably connectable base and a mounting part, the overall assembly between the fuse and the resistance wire can be achieved, while maintaining the separable requirement of both, so as to facilitate the replacement of the fuse part alone during use. At the same time, in a detachable manner, the overall manufacturing process will be simpler and the cost will be lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0028] Figure 1 is a perspective view of this application.

[0029] Figure 2 is another perspective view of this application.

[0030] Figure 3 is a schematic diagram when the base and the mounting part are disassembled in this application.

[0031] Figure 4 In this application, regarding Figure 3 is another perspective view.

[0032] Figure 5 is a schematic diagram of the internal structure of the base in this application.

[0033] Figure 6 In this application, regarding Figure 5 is a sectional perspective view.

[0034] Figure 7 is a schematic diagram of the internal structure of the mounting part in this application.

[0035] Reference numerals: 1, base; 101, outer housing; 102, first conductive part; 103, second conductive part; 103a, first plate body; 103b, second plate body; 2, first lead end; 3, second lead end; 4, resistance wire; 5, mounting part; 501, support body; 502, first contact part; 503, hand-held body; 504, second contact part; 6, fuse; 7, installation cavity; 8, sealing cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In order to make the above-mentioned objects, features, and advantages of this application more obvious and understandable, the following will describe the specific embodiments of this application in detail with reference to the drawings in the specification.

[0037] In the following description, numerous specific details are set forth to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Persons skilled in the art can make similar generalizations without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0038] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present application. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0039] Thirdly, the present application is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present application, for the sake of convenience in explanation, the cross-sectional views showing the device structure will be locally enlarged out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present application herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0040] Referring to Figures 1-7 , one embodiment of the present application provides a fuse-type resistor, comprising:

[0041] A base 1, and a first lead end 2 and a second lead end 3 fixed on the base 1. The first lead end 2 and the second lead end 3 are used for the series connection of the entire component and the circuit, and they can be convex or concave, and the material can be copper, iron, etc.;

[0042] A resistance wire 4, disposed on the base 1, one end of which is connected to the first lead end 2 to maintain conduction;

[0043] A mounting portion 5 and a fuse 6 disposed on the mounting portion 5;

[0044] Wherein, at least two conductive portions are provided on the outer surface of the mounting portion 5, which are respectively connected to both ends of the fuse 6 to maintain conduction. The mounting portion 5 and the base 1 are detachably connected. When the two are assembled together, the two conductive portions on the mounting portion 5 are respectively in contact with the second lead end 3 and the other end of the resistance wire 4 to conduct electricity;

[0045] The internal conduction relationship of this application is that when current passes through the first lead end 2, it then sequentially passes through the resistance wire 4, one of the conductive parts on the overlapping part, the fuse 6, the other conductive part on the overlapping part, and finally passes through the second lead end 3. When the overlapping part is separated, the fuse 6 passes through the two conductive parts and thus disconnects from the above circuit part. Compared with the prior art, this application not only realizes the assembly relationship between the fuse 6 and the resistance wire 4, but also can replace the fuse 6 by replacing the overlapping part. When replacing the overlapping part, the base 1 does not need to be removed from the circuit, so it has good practicability. In addition, during the production process of this application, the base 1 and the mounting part 5 can be separately produced and finally assembled. Compared with integral production, the difficulty is lower, so both the use cost and the production cost are lower than those of the prior art.

[0046] Further, referring to Figures 1-6 , the appearance of the base 1 is columnar, the resistance wire 4 is spirally encapsulated inside the base 1 and is coaxial with the base 1. The columnar structure helps to better cooperate with the resistance wire 4 for spiral folding to achieve volume reduction, and the encapsulated structure helps to protect the resistance wire 4.

[0047] Further, referring to Figures 4-6 , an installation cavity 7 is provided on the base 1. When the mounting part 5 is assembled on the base 1, the mounting part 5 is located inside the installation cavity 7, so as to achieve the protection effect on the mounting part 5 and at the same time keep the overall combined volume within a certain range.

[0048] Further, referring to Figures 3-6 , the base 1 includes the following parts:

[0049] The outer shell 101, which has a columnar structure. The outer shell 101 can be made of ceramics. In fact, a protective layer such as a resin layer or a gum layer can also be configured outside the outer shell 101 to protect the ceramic material. The installation cavity 7 is constructed on the outer shell 101, and the resistance wire 4 is encapsulated inside the outer shell 101. The resistance wire 4 can be set in the ceramics during production and then integrally formed, which simplifies the production process and does not affect the performance of the resistance wire 4;

[0050] The first conductive part 102 and the second conductive part 103 are both arranged inside the installation cavity 7 and are respectively connected to one end of the resistance wire 4 and the second lead end 3 to maintain conduction, and are respectively used to contact the two conductive parts to cooperate with the on-off process between the resistance wire 4 and the fuse 6.

[0051] Further, referring to Figures 1-6, the installation cavity 7 extends linearly along the axis direction of the outer housing 101. The carrying part 5 has a length direction, corresponding to the structure of the installation cavity 7, so that it can be inserted into the installation cavity 7 during assembly. The first conductive part 102 and the second conductive part 103 are respectively arranged at both ends of the installation cavity 7, so as to prevent short circuit caused by too close distance.

[0052] Further, referring to Figures 3-6 , the first conductive part 102 is arranged at the port of the installation cavity 7, and the second conductive part 103 is located at the inner bottom of the installation cavity 7. The connection between the first conductive part 102 and one of the conductive parts is detachable, so as to realize the detachable connection between the whole base 1 and the carrying part 5, without the need to set up another disassembly and assembly structure, thus simplifying the product structure and further reducing the manufacturing cost.

[0053] Further, referring to Figures 3-7 , the carrying part 5 includes the following parts:

[0054] A support body 501, which has a length direction. The support body 501 can be made of plastic, and the fuse 6 is arranged on the support body 501;

[0055] A first contact part 502, which is arranged at one end of the support body 501. The first contact part 502 represents one of the conductive parts on the carrying part 5, and is connected to one end of the fuse 6 and is in threaded cooperation with the first conductive part 102, so as to realize the detachable connection between the carrying part 5 and the base 1. The threaded cooperation makes the disassembly and assembly process simple, convenient and easy to operate, which is not only convenient for use, but also convenient for processing.

[0056] Further, referring to Figures 2-7 , the carrying part 5 further includes a hand-held body 503, which has insulating properties and can be made of plastic or resin materials. The hand-held body 503 is fixedly connected to the first contact part 502. Specifically, a fulcrum is formed on the first contact part 502 and is riveted to the hand-held body 503 to ensure the connection strength. When the carrying part 5 is assembled on the base 1, the hand-held body 503 blocks the port of the installation cavity 7, that is Figure 2 the state shown, so that the conductor part is completely blocked inside, thus ensuring the insulation on the outer surface of the whole product. At the same time, corresponding screw grooves can be set on the hand-held body 503, so as to facilitate screwing it to realize the above threaded cooperation process, and thus facilitate the assembly process between the carrying part 5 and the base 1.

[0057] Further, referring to Figure 5 and Figure 6 , the second conductive part 103 further includes the following parts:

[0058] The first plate body 103a is connected to the second lead end 3 and abuts against the inner cavity wall at the bottom of the installation cavity 7;

[0059] The second plate body 103b is connected to the first plate body 103a through a spring assembly. The spring assembly can adopt structures such as leaf springs;

[0060] Wherein, the carrying part 5 further includes a second contact part 504. The second contact part 504 is connected to the other end of the fuse 6 and is used to represent another conductive part on the outer surface of the carrying part 5, so as to contact the second plate body 103b; to realize the on-off process between the other end of the fuse 6 and the second lead end 3;

[0061] The abutting relationship between the first plate body 103a and the cavity wall fixes the entire second conductive part 103 at the inner bottom of the installation cavity 7, and at the same time facilitates the manufacturing process. The function of the spring assembly helps to ensure good contact between the second contact part 504 and the second conductive part 103.

[0062] Further, referring to Figure 7 , a sealing cavity 8 is constructed in the support body 501, and at least part of the length of the fuse 6 is located in the sealing cavity 8. The structure of the sealing cavity 8 can achieve the effect of temperature maintenance. When the current on the fuse 6 is overloaded and the temperature rises, it can prevent the temperature from dissipating and affecting the fusing effect.

[0063] In this application, for structures that need to achieve conductive functions, except for the fuse 6 and the resistance wire 4, copper or iron can be used for production.

[0064] It should be understood that in the development process of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions can be made. Such development efforts may be complex and time-consuming, but for those ordinary technical personnel who benefit from this disclosure, without excessive experimentation, the development efforts will be a routine work of design, manufacturing and production.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them. Although this application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of this application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of this application, and they should all be covered by the scope of the claims of this application.

Claims

1. A fuse-type resistor, characterized in that: Comprising: A base (1), a first lead end (2) and a second lead end (3) fixed to the base (1); A resistance wire (4), disposed on the base (1), one end of which is connected to the first lead end (2); A mounting portion (5) and a fuse (6) disposed on the mounting portion (5); Wherein, there are at least two conductive portions on the mounting portion (5), which are respectively connected to both ends of the fuse (6), the mounting portion (5) is detachably connected to the base (1), and the two conductive portions are respectively in contact conduction with the second lead end (3) and the other end of the resistance wire (4).

2. The fuse-type resistor according to claim 1, wherein: The base (1) is columnar, and the resistance wire (4) is spirally encapsulated inside the base (1) and is coaxial with the base (1).

3. The fuse-type resistor according to claim 2, wherein: An installation cavity (7) is provided on the base (1), and when the mounting portion (5) is connected to the base (1), the mounting portion (5) is located inside the installation cavity (7).

4. The fuse-type resistor according to claim 3, characterized in that: The base (1) includes: An outer housing (101), which has a columnar structure, the installation cavity (7) is formed on the outer housing (101), and the resistance wire (4) is encapsulated inside the outer housing (101); A first conductive portion (102) and a second conductive portion (103), disposed inside the installation cavity (7), and respectively connected to one end of the resistance wire (4) and the second lead end (3), and are used to contact the two conductive portions.

5. The fuse-type resistor according to claim 4, characterized in that: The installation cavity (7) extends linearly along the axis direction of the outer housing (101), the mounting portion (5) has a length direction, and the first conductive portion (102) and the second conductive portion (103) are respectively disposed at both ends of the installation cavity (7).

6. The fuse-type resistor according to claim 5, characterized in that: The first conductive portion (102) is disposed at the port of the installation cavity (7), and is detachably connected to one of the conductive portions.

7. The fuse type resistor according to claim 6, wherein: The mounting portion (5) includes: A support body (501), which has a length direction, and the fuse (6) is disposed on the support body (501); A first contact portion (502), disposed at one end of the support body (501), connected to one end of the fuse (6), and in threaded cooperation with the first conductive portion (102).

8. The fuse-type resistor according to claim 7, characterized in that: The mounting portion (5) further includes a hand-held body (503), which is fixedly connected to the first contact portion (502) and plugs the port of the installation cavity (7).

9. The fuse-type resistor according to claim 6, wherein: The second conductive portion (103) includes: A first plate body (103a), connected to the second lead end (3) and abutted against the inner wall of the bottom of the installation cavity (7); A second plate body (103b), connected to the first plate body (103a) through a spring assembly; Wherein, the mounting portion (5) further includes a second contact portion (504), which is used to contact the second plate body (103b).

10. The fuse-type resistor according to claim 7, wherein: A sealing cavity (8) is formed inside the support body (501), and at least a part of the fuse (6) is located inside the sealing cavity (8).

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