A fuse holder with double-side overheat protection

Abstract

The utility model discloses a kind of fuse holder bracket with double-sided overheating protection, including two thermal fuses, two pins of two thermal fuses are provided with lead A and lead B by welding, to realize the extension connection to thermal fuse, the outer wall of two thermal fuses is wrapped with protective sleeve, and bracket body is installed by the protective sleeve, the pin of two lead B near thermal fuse is set as U type, simultaneously make the outer protective sleeve install in the both sides of bracket body as U type state, to realize the firm installation of thermal fuse on the both sides of bracket body. The utility model is equipped with thermal fuse on the both sides of bracket body, cooperate the installation structure of U type lead B and protective sleeve, realize double-sided overheating protection function, can simultaneously carry out temperature monitoring to the heating component on the both sides of equipment, when the temperature of any side exceeds threshold value, corresponding thermal fuse is fused in time, cut off circuit, improve the security of equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of thermal fuse application technology, and in particular to a fuse support with double-sided overheat protection. Background Technology

[0002] Thermal fuses, as core components of circuit overheat protection, are widely used in various electrical systems such as home appliances and industrial equipment. They cut off circuits through their own fusing characteristics, preventing safety accidents such as fires and damage caused by overheating. The fuse holder, as the mounting carrier for the thermal fuse, directly affects the installation stability, protection response timeliness, and overall circuit operational safety of the thermal fuse.

[0003] In existing technologies, traditional fuse holders mostly adopt a single-sided installation of a single fuse structure, which can only achieve overheat protection in a single direction or a single area. This is insufficient to meet the needs of complex equipment for simultaneous protection of multiple areas on both sides. At the same time, the lead wire connections of existing holders mostly rely on a single welding method, which is prone to problems such as poor soldering and desoldering after long-term use. Furthermore, the lead wires lack an effective protective structure and are susceptible to wear and corrosion, leading to insulation failure. In addition, the assembly of the thermal fuse and the holder is mostly a simple snap-fit, which is prone to loosening and displacement under operating conditions such as equipment vibration and temperature changes. This causes the thermal fuse to be unable to accurately sense temperature changes, affecting the sensitivity and reliability of overheat protection, and in severe cases, even causing circuit failure. Therefore, this utility model proposes a fuse holder with dual-sided overheat protection. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a fuse holder with dual-sided overheat protection. Through the dual-sided thermal fuse layout, stable installation structure and multiple protection designs, the reliability of protection and installation stability are improved.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a fuse holder with double-sided overheat protection is provided, including two thermal fuses, and leads A and B are welded to the two pins of the two thermal fuses to realize the extension connection of the thermal fuses; The outer walls of both thermal fuses are covered with protective sleeves, and the bracket body is installed through the protective sleeves. The two leads B are arranged in a U-shape near the pins of the thermal fuses, and the outer protective sleeves are installed in a U-shape on both sides of the bracket body to securely install the thermal fuses on both sides of the bracket body.

[0006] The present invention is further configured such that: connector A and connector B are respectively crimped to the end faces of lead A and lead B, and rubber sleeves are respectively tightly wrapped around the outside of connector A and connector B.

[0007] Through the above technical solution, connector A and connector B are fixed to lead wire A and lead wire B by crimping process, ensuring the stability of current transmission and avoiding possible problems such as poor soldering and desoldering in welding connections; the outer rubber sleeve has the functions of insulation and sealing, which can prevent the connector from contacting external conductors and causing short circuits, while isolating moisture, dust and other impurities, extending the service life of the connection parts and improving the electrical safety of the overall structure.

[0008] The present invention is further configured such that the outer walls of the lead wire A and the lead wire B are respectively wrapped with protective layer A and protective layer B.

[0009] Through the above technical solution, protective layer A and protective layer B are wrapped around the outer wall of the lead wire to form a physical protective barrier, which can effectively resist the damage to the lead wire caused by external mechanical wear, squeezing and other external forces, avoid the risk of short circuit caused by the damage of the lead wire insulation layer, reduce the loss in the heat conduction process, ensure that the thermal fuse can accurately sense temperature changes, and ensure the timely response of the overheat protection function.

[0010] The present invention is further configured such that: both protective layer A and protective layer B are made of nylon material interlaced and woven together.

[0011] Through the above technical solutions, nylon material itself has the characteristics of high temperature resistance, wear resistance and high tensile strength. The protective layer made by the interlaced winding process has a tight structure and a certain degree of elasticity. It can not only fit tightly to the outer wall of the lead wire to form all-round protection, but also play a buffering role when the lead wire is subjected to slight pulling and bending to avoid lead wire breakage. At the same time, the insulation performance of nylon material can further improve the electrical safety protection level of the lead wire.

[0012] The present invention is further configured such that: a mounting hole is provided in the middle of the bracket body, and mounting edges are integrally provided on both sides symmetrically, and both mounting edges are arc-shaped; one side of the U-shaped edge of the protective sleeve is installed inside the arc-shaped mounting edge, and the other side is tightly fitted to the outer arc edge of the mounting edge.

[0013] Through the above technical solution, the arc-shaped mounting edge is adapted to the U-shaped structure of the protective sleeve. The contact area between the protective sleeve and the mounting edge is increased by utilizing the fitting characteristics of the arc surface, so that the thermal fuse is stably fixed on both sides of the bracket body through the protective sleeve. The symmetrically arranged mounting edges ensure that the thermal fuse on both sides is subjected to uniform force, avoiding installation offset caused by unilateral imbalance. The mounting hole in the middle facilitates the overall fixing of the bracket body on the equipment, realizing the rapid positioning of the overall structure.

[0014] The present invention is further configured such that: a clamp is fitted onto the outer wall of the protective sleeve near the end face, and the clamp ensures that the protective sleeve is tightly installed inside the mounting edge.

[0015] Through the above technical solution, the clamp firmly fixes the protective sleeve to the arc-shaped installation edge through radial contraction force, preventing the protective sleeve from loosening or shifting due to vibration during equipment operation, thereby ensuring the stability of the installation position of the thermal fuse; the clamp's tightening effect forms a tight-fitting sealing structure between the protective sleeve and the installation edge, reducing the impact of the external environment on the thermal fuse, while enhancing the overall structure's vibration resistance.

[0016] The present invention is further configured such that: a positioning protrusion is fixedly connected to the middle of one end of the bracket body, and the surface of the positioning protrusion is set with a wave-shaped structure, while the end face of the bracket body is symmetrically provided with arc-shaped grooves on both sides of the positioning protrusion.

[0017] Through the above technical solution, the positioning protrusion of the wave-shaped structure can form an anti-slip fit with the equipment mounting surface when the bracket body is installed, increasing the friction and preventing the bracket body from rotating or shifting, thus improving the accuracy of installation positioning. The arc grooves on both sides provide clearance for installation operations, making it easier for tools to be inserted for installation and fixation. On the other hand, they can reduce the overall weight of the bracket body and enhance the structural toughness of the bracket body, preventing deformation when subjected to force or temperature changes.

[0018] The beneficial effects of this utility model are as follows: 1. This utility model achieves dual-sided overheat protection by setting thermal fuses on both sides of the bracket body and using the installation structure of U-shaped lead B and protective sleeve. It can simultaneously monitor the temperature of the heating components on both sides of the equipment. When the temperature on either side exceeds the threshold, the corresponding thermal fuse melts in time, cutting off the circuit and improving the safety of equipment operation. 2. This utility model enhances the reliability and electrical safety of lead wire connections through multiple designs including connector crimping, nylon braided protective layer, and rubber sleeve protection, avoiding problems such as loose connections and short circuits, and extending the service life of the fuse holder; 3. This utility model ensures the installation stability of the thermosetting fuse and the bracket body through the synergistic effect of the arc-shaped mounting edge, clamp and wave-shaped positioning protrusion. It has excellent vibration resistance, is suitable for complex working conditions, and has a reasonable overall structural design, is easy to install and has strong practicality. Attached Figure Description

[0019] Figure 1 This is a first structural diagram of a fuse holder with double-sided overheat protection according to the present invention; Figure 2 This is a second structural diagram of a fuse holder with double-sided overheat protection according to the present invention; Figure 3 This is a front view of a fuse holder with double-sided overheat protection according to the present invention. Figure 4This is a cross-sectional view of a fuse holder with double-sided overheat protection according to the present invention. Figure 5 This is a first structural diagram of the support body in a fuse holder with double-sided overheat protection according to the present invention. Figure 6 This is a second structural diagram of the support body in a fuse holder with double-sided overheat protection according to the present invention.

[0020] In the diagram: 1. Thermal fuse; 2. Lead wire A; 21. Connector A; 22. Protective layer A; 3. Lead wire B; 31. Connector B; 32. Protective layer B; 4. Protective sleeve; 41. Clamp; 5. Bracket body; 51. Mounting hole; 52. Mounting edge; 53. Arc groove; 54. Positioning protrusion. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0022] like Figures 1-4 As shown, a fuse holder with dual-sided overheat protection includes two thermal fuses 1. Leads A2 and B3 are welded to the two pins of each thermal fuse 1 to extend its connection. Connectors A21 and B31 are respectively crimped to the ends of leads A2 and B3. Rubber sleeves are tightly wrapped around the outside of each connector A21 and connector B31. Connectors A21 and connector B31 are fixed to leads A2 and B3 through a crimping process, ensuring stable current transmission and avoiding potential issues such as incomplete soldering or detachment. The external rubber sleeves provide insulation and sealing, preventing short circuits caused by contact between the connectors and external conductors, while also isolating moisture, dust, and other impurities, extending the service life of the connection and improving the overall electrical safety of the structure. The outer walls of leads A2 and B3 are respectively wrapped with protective layers A22 and B32. Protective layers A22 and B32 wrap around the outer walls of the leads to form a physical protective barrier, which can effectively resist damage to the leads by external mechanical wear, extrusion and other external forces, avoid the risk of short circuit caused by damage to the lead insulation layer, and reduce heat loss during heat conduction. This ensures that the thermal fuse 1 can accurately sense temperature changes and ensures timely response of the overheat protection function. Both protective layers A22 and B32 are made of nylon material through interlaced weaving. Nylon material itself has the characteristics of high temperature resistance, wear resistance and high tensile strength. The protective layers made by the interlaced weaving process have a tight structure and a certain degree of elasticity. They can not only fit tightly to the outer wall of the lead wire to form all-round protection, but also play a buffering role when the lead wire is subjected to slight pulling and bending to prevent the lead wire from breaking. At the same time, the insulation performance of nylon material can further improve the electrical safety protection level of the lead wire.

[0023] like Figures 2-4 As shown, the outer walls of both thermal fuses 1 are covered with protective sleeves 4. A clamp 41 is fitted onto the outer wall of the protective sleeve 4 near the end face, and the clamp 41 tightly installs the protective sleeve 4 inside the mounting edge 52. The clamp 41 firmly fixes the protective sleeve 4 inside the arc-shaped mounting edge 52 through radial contraction force, preventing the protective sleeve from loosening or shifting due to vibration during equipment operation, thereby ensuring the stability of the installation position of the thermal fuse 1. The tightening effect of the clamp forms a tight-fitting sealing structure between the protective sleeve and the mounting edge, reducing the impact of the external environment on the thermal fuse, and enhancing the vibration resistance of the overall structure.

[0024] like Figure 5 and Figure 6 As shown, the bracket body 5 is installed through the protective sleeve 4. The two leads B3 are arranged in a U-shape near the pins of the thermal fuse 1, which makes the outer protective sleeve 4 installed in a U-shape on both sides of the bracket body 5 to securely install the thermal fuses 1 on both sides of the bracket body 5. The bracket body 5 has a mounting hole 51 in the middle, and mounting edges 52 are symmetrically and integrally arranged on both sides. Both mounting edges 52 are arc-shaped. One side of the U-shaped edge of the protective sleeve 4 is installed inside the arc-shaped mounting edge 52, and the thermal fuse 1 inside is located inside the mounting edge 52. The other side is tightly fitted to the outer arc edge of the mounting edge 52. The arc-shaped mounting edge 52 is adapted to the U-shaped structure of the protective sleeve 4. The fitting characteristics of the arc surface increase the contact area between the protective sleeve and the mounting edge, so that the thermal fuse 1 is stably fixed on both sides of the bracket body 5 through the protective sleeve. The symmetrically arranged mounting edges ensure that the thermal fuses on both sides are evenly stressed, avoiding installation offset caused by one-sided weight. The mounting hole 51 in the middle facilitates the overall fixing of the bracket body on the equipment, realizing the rapid positioning of the overall structure. A positioning protrusion 54 is fixedly connected to the middle of one end of the bracket body 5, and the surface of the positioning protrusion 54 is set with a wave-shaped structure. At the same time, the end face of the bracket body 5 is symmetrically provided with arc-shaped grooves 53 on both sides of the positioning protrusion 54. The wave-shaped positioning protrusion 54 can form an anti-slip fit with the equipment mounting surface when the bracket body 5 is installed, increasing the friction and preventing the bracket body 5 from rotating or shifting, thus improving the accuracy of installation and positioning. The arc-shaped grooves 53 on both sides provide clearance for installation operations, making it easy for tools to be inserted for installation and fixation. On the other hand, they can reduce the overall weight of the bracket body and enhance the structural toughness of the bracket body, preventing deformation under stress or temperature changes.

[0025] When this utility model is in use, if the temperature of the heating components on both sides of the equipment exceeds the set threshold, the corresponding thermal fuse 1 will quickly melt and cut off the circuit, realizing independent overheat protection on both sides; the multi-protection structure ensures reliable connection and stable installation under complex working conditions, effectively guaranteeing the safe operation of the equipment.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fuse holder with dual-sided overheat protection, comprising two thermal fuses (1), characterized in that, Both of the two fuses (1) are provided with leads A (2) and B (3) by welding at their two pins to achieve an extension connection of the fuses (1); The outer walls of both of the thermal fuses (1) are covered with protective sleeves (4), and the bracket body (5) is installed through the protective sleeves (4). The two leads B (3) are arranged in a U-shape near the pins of the thermal fuses (1), and the outer protective sleeves (4) are installed in a U-shape on both sides of the bracket body (5) to securely install the thermal fuses (1) on both sides of the bracket body (5).

2. The fuse holder with dual-sided overheat protection according to claim 1, characterized in that, The end faces of the lead wire A (2) and the lead wire B (3) are respectively crimped with connector A (21) and connector B (31), and rubber sleeves are respectively tightly wrapped around the outside of connector A (21) and connector B (31).

3. A fuse holder with dual-sided overheat protection according to claim 2, characterized in that, The outer walls of the lead wire A (2) and the lead wire B (3) are respectively wrapped with protective layer A (22) and protective layer B (32).

4. A fuse holder with dual-sided overheat protection according to claim 3, characterized in that, Both protective layers A (22) and B (32) are made of nylon material that is interwoven and twisted.

5. A fuse holder with dual-sided overheat protection according to claim 1, characterized in that, The bracket body (5) has an installation hole (51) in the middle, and installation edges (52) are symmetrically and integrally arranged on both sides. Both installation edges (52) are arc-shaped. One side of the U-shaped edge of the protective sleeve (4) is installed inside the arc-shaped installation edge (52), and the other side is tightly fitted to the outer arc edge of the installation edge (52).

6. A fuse holder with dual-sided overheat protection according to claim 5, characterized in that, The outer wall of the protective sleeve (4) is fitted with a clamp (41) near the end face, and the clamp (41) makes the protective sleeve (4) tightly installed inside the mounting edge (52).

7. A fuse holder with dual-sided overheat protection according to claim 5, characterized in that, A positioning protrusion (54) is fixedly connected to the middle of one end of the bracket body (5), and the surface of the positioning protrusion (54) is set with a wave-shaped structure. Meanwhile, arc-shaped grooves (53) are symmetrically opened on both sides of the positioning protrusion (54) at the end face of the bracket body (5).

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