Fuse with novel temperature sensor mounting structure

Abstract

The utility model provides a kind of fuse with novel temperature sensing body mounting structure, including shell, electrically conductive connecting piece is equipped in shell, first electrically conductive body, second electrically conductive body are equipped in the side of electrically conductive connecting piece, limiting cavity is equipped in the middle of the other side of electrically conductive connecting piece, first elastic deformation body and organic temperature sensing body are equipped in the limiting cavity.In the utility model application, first electrically conductive body, second electrically conductive body and electrically conductive connecting piece form U type electrically conductive path;Through the cooperation of first elastic deformation body and organic temperature sensing body, reliable fusing function is realized;The utility model improves the electrically conductive stability, reduces the influence of current, temperature and other factors on organic temperature sensing body, is suitable for high current application scene, further strengthens the accurate control to organic temperature sensing body;The middle of the side of electrically conductive connecting piece is specially provided with the limiting cavity that contains organic temperature sensing body, organic temperature sensing body does not need to occupy the space of entire electrically conductive connecting piece side, while effectively reducing the volume of organic temperature sensing body, reliable fusing can also be ensured, and compared with traditional fusing structure, the technical scheme of the utility model has low processing technology requirement, reduces production cost.

Description

Technical Field

[0001] This utility model relates to a thermal fuse, specifically a fuse with a novel temperature-sensing element mounting structure. Background Technology

[0002] A thermal fuse, also known as a thermal circuit breaker, is a one-time over-temperature protection device. It is usually installed on the heating components of electrical and electronic devices. It can sense overheating caused by abnormal operation of the product and cut off the circuit to prevent fire. It is widely used in the thermal protection of similar components in home appliances, automobiles, and smart bathrooms. When the internal current of the product is overloaded, the circuit is abnormal, or the ambient temperature rises to a certain temperature, the thermal fuse can achieve over-temperature melting through its own structure, which can automatically interrupt the current and prevent damage or fire caused by excessive temperature.

[0003] Existing thermal fuses typically use a temperature-sensing element to achieve circuit breaking. Its main function is to detect temperature changes and trigger the fuse to protect the circuit or equipment from damage caused by overheating, overload, or other abnormal conditions. The raw materials used in the temperature-sensing element are relatively expensive, resulting in high unit cost per unit volume. Therefore, how to reduce the size of the temperature-sensing element while still ensuring normal circuit operation and effective fuse breaking is a problem we need to solve.

[0004] To address the above issues, we have developed a new technical solution. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a fuse with a novel temperature-sensing element mounting structure, and the technical solution adopted includes:

[0006] A fuse with a novel temperature-sensing element mounting structure includes a housing, a conductive connecting piece inside the housing, a first conductor and a second conductor on one side of the conductive connecting piece, and a limiting cavity in the middle of the other side of the conductive connecting piece. A first elastic deformation body and an organic temperature-sensing element are disposed within the limiting cavity. The organic temperature-sensing element has a first state or a second state. When the organic temperature-sensing element is in the first state, both ends of the first elastic deformation body elastically abut against the organic temperature-sensing element and the conductive connecting piece, respectively. Under the elastic force of the first elastic deformation body, the conductive connecting piece contacts and conducts electricity with the first and second conductors. When the organic temperature-sensing element is in the second state, the first elastic deformation body cannot abut against the conductive connecting piece, and the conductive connecting piece detaches from either the first or second conductor, or from both the first and second conductors.

[0007] According to an embodiment of the present invention, a fuse with a novel temperature-sensing element mounting structure is provided, wherein the housing is a cylindrical body, and an outwardly convex cylindrical body is formed in the middle of one end of the cylindrical body away from the first conductor and the second conductor, and the internal space of the outwardly convex cylindrical body is a limiting cavity; the organic temperature-sensing element is cylindrical.

[0008] According to an embodiment of the present invention, a fuse with a novel temperature-sensing element mounting structure is provided, wherein the housing is formed by three semi-cylindrical bodies arranged side by side and tangentially to the left, middle and right, and the internal space of the middle semi-cylindrical body is a limiting cavity; the organic temperature-sensing element is cylindrical.

[0009] According to an embodiment of the present invention, a fuse with a novel temperature-sensing element mounting structure is provided in the housing, wherein the first conductor and the second conductor are disposed in the pin fixing seat.

[0010] According to an embodiment of the present invention, a fuse with a novel temperature-sensing element mounting structure is provided in the housing with a first fixing seat, and the conductive connecting piece is disposed on the first fixing seat.

[0011] According to an embodiment of the present invention, a fuse with a novel temperature-sensing element mounting structure is provided. The pin fixing base includes a base body, on which two conductive sleeves for mounting a first conductor and a second conductor are provided. A second elastic deformation body is fitted on the first fixing base, the upper end of the second elastic deformation body abutting against the lower end face of the base body, and the two conductive sleeves are located inside the second elastic deformation body.

[0012] According to an embodiment of the present invention, a fuse with a novel temperature-sensing element mounting structure is provided. The pin fixing base includes a base body, on which two conductive sleeves for mounting a first conductor and a second conductor are provided. A second elastic deformation form is provided between the two conductive sleeves. The upper end of the second elastic deformation form abuts against the lower end face of the base body, and the lower end abuts against a conductive connecting piece.

[0013] According to an embodiment of the present invention, a fuse with a novel temperature-sensing element mounting structure is provided with a gasket between the first elastic deformation form and the organic temperature-sensing element.

[0014] According to an embodiment of the present invention, a fuse with a novel temperature-sensing element mounting structure is provided, wherein the first elastic deformation form and the second elastic deformation form are both springs.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this utility model application, the first conductor, the second conductor, and the conductive connecting piece form a U-shaped conductive path; through the cooperation of the first elastic deformation form and the organic temperature sensing element, a reliable fusing function is achieved; this utility model improves conductivity stability, reduces the influence of factors such as current and temperature on the organic temperature sensing element, is suitable for high-current application scenarios, and further enhances the precise control of the organic temperature sensing element; a limiting cavity for accommodating the organic temperature sensing element is specially provided in the middle of one side of the conductive connecting piece, so that the organic temperature sensing element does not need to occupy the entire space of one side of the conductive connecting piece, effectively reducing the volume of the organic temperature sensing element while ensuring reliable fusing; and compared with the traditional fusing structure, the technical solution of this utility model has lower processing requirements and reduces production costs. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a three-dimensional schematic diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of this utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of Embodiment 2 of the present invention;

[0023] Figure 6 This is a cross-sectional view of Embodiment 2 of the present invention;

[0024] Figure 7 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0025] Explanation of key component symbols:

[0026] 10. Conductive connecting piece; 20. First conductor; 30. Second conductor; 40. Organic temperature sensor; 50. First elastic deformable part; 60. Second elastic deformable part; 70. Pin fixing seat; 71. Seat body; 72. Conductive sleeve; 80. Housing; 81. Limiting cavity; 82. Circular cylinder; 83. Outwardly protruding cylinder; 84. Semi-cylindrical body; 90. First fixing seat; 91. Limiting clamping platform; 100. Gasket; 110. Second fixing seat. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Example

[0032] This utility model provides a fuse with a novel temperature-sensing element mounting structure, such as... Figure 1 , 2As shown in Figures 3, 4, 5, 6, and 7, the device includes a housing 80. A conductive connecting piece 10 is provided within the housing 80. A first conductor 20 and a second conductor 30 are provided on one side of the conductive connecting piece 10. A limiting cavity 81 is provided in the middle of the other side of the conductive connecting piece 10. A first elastic deformation piece 50 and an organic temperature sensor 40 are provided within the limiting cavity 81. The organic temperature sensor 40 has a first state or a second state. When the organic temperature sensor 40 is in the first state, both ends of the first elastic deformation piece 50 elastically press against the organic temperature sensor 40 and the conductive connecting piece 10, respectively. Under the elastic force of the first elastic deformation piece 50, the conductive connecting piece 10 contacts and conducts electricity with the first conductor 20 and the second conductor 30. When the organic temperature sensor 40 is in the second state, the first elastic deformation piece 50 cannot press against the conductive connecting piece 10, and either end of the conductive connecting piece 10 is detached from the first conductor 20 (or the second conductor 30), or both ends are detached from the first conductor 20 and the second conductor 30.

[0033] Under normal operating conditions, i.e., when the organic thermosensitive element 40 is in the first state, the organic thermosensitive element 40 supports the first elastic deformable part 50, which presses against the conductive connecting piece 10. The conductive connecting piece 10 approaches the first conductor 20 and the second conductor 30 and conducts electricity in contact with them, thus achieving a circuit path under normal conditions. When the current in the circuit exceeds a specified value, and the ambient temperature reaches or exceeds the melting point temperature of the organic thermosensitive element 40, the organic thermosensitive element 40 is in the second state. The organic thermosensitive element 40 changes from a solid state to a liquid state, and the elastically compressed first elastic deformable part 50 loses its support and changes from a compressed state to a free length state, unable to press against the conductive connecting piece 10. At this time, either end of the conductive connecting piece 10 is detached from the first conductor 20 (second conductor 30), or both ends are simultaneously detached from the first conductor 20 and the second conductor 30, and the conductive connecting piece 10 cannot form a circuit with the first conductor 20 and the second conductor 30.

[0034] In this utility model application, the first conductor 20, the second conductor 30, and the conductive connecting piece 10 form a U-shaped conductive path to achieve U-shaped conduction on the same side. The reliable fusing function is achieved through the cooperation of the first elastic deformable part 50 and the organic temperature sensor 40. The structure is simple and the response is rapid. This utility model improves conductivity stability and reduces the influence of current, temperature, and other factors on the organic temperature sensor 40, making it suitable for high-current applications and further enhancing the precise control of the organic temperature sensor 40. A limiting cavity 81 for accommodating the organic temperature sensor is specially provided in the middle of one side of the conductive connecting piece 10. The organic temperature sensor does not need to occupy the entire space on one side of the conductive connecting piece 10, effectively reducing the volume of the organic temperature sensor. Correspondingly, the volume of the first elastic deformable part 50 is also smaller, and the radius of the first elastic deformable part 50 is close to the radius of the organic temperature sensor. While effectively reducing the volume of the organic temperature sensor, reliable fusing is still ensured. Compared with traditional fusing structures, the technical solution of this utility model has lower processing requirements and reduces production costs.

[0035] Furthermore, in embodiments one and three of this utility model application, as... Figure 1 , 2 As shown in Figures 3 and 4, the shell 80 is a circular cylindrical body 82. A convex cylindrical body 83 is formed in the middle of the end of the circular cylindrical body 82 that is away from the first conductor 20 and the second conductor 30. The internal space of the convex cylindrical body 83 is a limiting cavity 81. The organic material temperature sensing body 40 is cylindrical.

[0036] Furthermore, in Embodiment 2 of this utility model application, as Figure 5 , 6 As shown in Figures 7 and 8, the shell 80 is formed by three semi-cylindrical bodies 84 arranged side by side and tangentially on the left, middle and right, and the internal space of the middle semi-cylindrical body 84 is a limiting cavity 81; the organic temperature sensor 40 is cylindrical.

[0037] Furthermore, in Embodiments 1, 2, and 3 of this utility model application, as follows: Figures 1 to 7 As shown, a pin fixing seat 70 is provided inside the housing 80, and the first conductor 20 and the second conductor 30 are disposed inside the pin fixing seat 70. A first fixing seat 90 is provided inside the housing 80, and the conductive connecting piece 10 is disposed on the first fixing seat 90. In Embodiment 1, the pin fixing seat 70 and the first fixing seat 90 are respectively cylindrical. In Embodiment 2, the shapes of the pin fixing seat 70 and the first fixing seat 90 are also adapted to the housing 80. In Embodiment 1, the first fixing seat 90 is used not only to fix the conductive connecting piece 10, but also to fix the second elastic deformable part 60. A limiting bracket 91 is provided on the outer periphery of the first fixing seat 90, and the limiting bracket 91 cooperates with the housing 80 to limit the second elastic deformable part 60.

[0038] Furthermore, in Embodiments 1, 2, and 3 of this utility model application, as follows: Figure 2 , 3 As shown in Figures 4, 6, and 7, both the first elastic deformation type 50 and the second elastic deformation type 60 are springs.

[0039] Furthermore, in embodiments one and three of this utility model application, as... Figure 1 , 2 As shown in Figures 3 and 4, the pin fixing base 70 includes a base body 71, on which two conductive sleeves 72 for setting the first conductor 20 and the second conductor 30 are provided; a second elastic deformation form 60 is fitted on the first fixing base 90. In this embodiment, the second elastic deformation form 60 is an integral large spring. The upper end of the second elastic deformation form 60 abuts against the lower end face of the base body 71, and the two conductive sleeves 72 are located inside the second elastic deformation form 60.

[0040] Furthermore, in Embodiment 2 of this utility model application, as Figure 5 , 6 As shown in Figure 7, the pin fixing base 70 includes a base body 71, on which two conductive sleeves 72 for setting the first conductor 20 and the second conductor 30 are provided; in this embodiment, the second elastic deformation form 60 is disposed between the two conductive sleeves 72, the upper end of the second elastic deformation form 60 abuts against the lower end face of the base body 71, and the lower end abuts against the conductive connecting piece 10.

[0041] Furthermore, in Embodiments 1 and 2 of this utility model application, as... Figure 3 , 6 As shown, a gasket 100 is provided between the first elastic deformable part 50 and the organic temperature sensor 40. The gasket 100 further isolates the conductive component and the organic temperature sensor 40, further preventing the organic temperature sensor 40 from being affected by the temperature of the current. Of course, the gasket 100 may not be provided, and a second fixing seat 110 may be provided outside the first elastic deformable part 50 (as in embodiment three, for example). Figure 4 As shown, it is used to install and fix the first elastic deformable part 50, and also to isolate the first elastic deformable part 50 and the organic temperature sensor 40. The function of the gasket 100 and the second fixing seat 110 is not only to isolate the current and temperature, but also to prevent the first elastic deformable part 50 from directly acting on the organic temperature sensor 40, causing damage to the organic temperature sensor 40, or crushing the organic temperature sensor 40.

[0042] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A fuse with a novel temperature-sensing element mounting structure, characterized in that, The device includes a housing (80), a conductive connecting piece (10) inside the housing (80), a first conductor (20) and a second conductor (30) on one side of the conductive connecting piece (10), and a limiting cavity (81) in the middle of the other side of the conductive connecting piece (10). A first elastic deformable part (50) and an organic temperature sensor (40) are provided within the limiting cavity (81). The organic temperature sensor (40) has a first state or a second state. When the organic temperature sensor (40) is in the first state, the two elastic deformable parts (50)... The ends of the organic thermosensitive body (40) and the conductive connecting piece (10) are elastically pressed against each other. Under the elastic force of the first elastic deformation body (50), the conductive connecting piece (10) contacts the first conductor (20) and the second conductor (30) to conduct electricity. When the organic thermosensitive body (40) is in the second state, the first elastic deformation body (50) cannot press against the conductive connecting piece (10). The conductive connecting piece (10) is separated from either the first conductor (20) or the second conductor (30), or is separated from both the first conductor (20) and the second conductor (30).

2. The fuse with a novel temperature-sensing element mounting structure according to claim 1, characterized in that, The shell (80) is a cylindrical body (82). A convex cylindrical body (83) is formed in the middle of the end of the cylindrical body (82) away from the first conductor (20) and the second conductor (30). The internal space of the convex cylindrical body (83) is a limiting cavity (81). The organic temperature sensor (40) is cylindrical.

3. A fuse with a novel temperature-sensing element mounting structure according to claim 1, characterized in that, The shell (80) is formed by three semi-cylindrical bodies (84) arranged side by side and tangentially on the left, middle and right sides. The internal space of the middle semi-cylindrical body (84) is a limiting cavity (81); the organic temperature sensor (40) is cylindrical.

4. A fuse with a novel temperature-sensing element mounting structure according to claim 1, characterized in that, A pin holder (70) is provided inside the housing (80), and the first conductor (20) and the second conductor (30) are disposed inside the pin holder (70).

5. A fuse with a novel temperature-sensing element mounting structure according to claim 4, characterized in that, A first fixing seat (90) is provided inside the housing (80), and the conductive connecting piece (10) is disposed on the first fixing seat (90).

6. A fuse with a novel temperature-sensing element mounting structure according to claim 5, characterized in that, The pin holder (70) includes a base (71), on which two conductive sleeves (72) for setting the first conductor (20) and the second conductor (30) are provided; a second elastic deformable body (60) is fitted on the first holder (90), the upper end of the second elastic deformable body (60) abuts against the lower end face of the base (71), and the two conductive sleeves (72) are located inside the second elastic deformable body (60).

7. A fuse with a novel temperature-sensing element mounting structure according to claim 5, characterized in that, The pin holder (70) includes a base (71), on which two conductive sleeves (72) for setting the first conductor (20) and the second conductor (30) are provided; a second elastic deformation form (60) is provided between the two conductive sleeves (72), the upper end of the second elastic deformation form (60) abuts against the lower end face of the base (71), and the lower end abuts against the conductive connecting piece (10).

8. A fuse with a novel temperature-sensing element mounting structure according to claim 1, characterized in that, A gasket (100) is provided between the first elastic deformable body (50) and the organic thermosensitive body (40).

9. A fuse with a novel temperature-sensing element mounting structure according to claim 6, characterized in that, Both the first elastic deformation type (50) and the second elastic deformation type (60) are springs.

10. A fuse with a novel temperature-sensing element mounting structure according to claim 7, characterized in that, Both the first elastic deformation type (50) and the second elastic deformation type (60) are springs.

Images