A thermal fuse having a plastic housing that prevents impact

Abstract

The utility model discloses a kind of hot fusible body with anti-collision plastic shell, including shell, the side fixedly connected with triangular plate of shell, to realize the installation and fixation of whole hot fusible body component, the inside installation of shell has hot fusible body ontology, and the both ends pin of hot fusible body ontology is respectively welded with plug-in conductor, to realize that hot fusible body component is realized fast installation operation by plug-in conductor, the inner cavity of shell is grouted with sealant, realizes the sealing operation to shell inside.The utility model is set by being provided with the plastic shell with limiting post, can avoid the swing of hot fusible body in shell, solve the problem that traditional shellless hot fusible body is easily caused by displacement and leads to contact bad, by plastic shell can have the physical protection effect of anti-collision, scratchproof, dust or liquid splashing, solve the problem that traditional hot fusible body is exposed to external force damage or environmental impurities influence, leading to shortened service life.

Description

Technical Field

[0001] This utility model relates to the field of thermal fuse application technology, and in particular to a thermal fuse with an anti-collision plastic shell. Background Technology

[0002] A thermal fuse, also known as a thermal circuit breaker, is a passive safety component used to protect circuits or equipment from overheating. Its core principle is to melt an internal fusible alloy or organic compound at a set temperature, cutting off the circuit and preventing safety accidents such as equipment damage or fire caused by excessive temperature. It is widely used in household appliances, power adapters, motor equipment and other fields.

[0003] Traditional fusible links are mostly exposed structures, lacking effective physical protection. On the one hand, they are easily damaged by external impacts and scratches during installation and use, affecting normal function; on the other hand, in their exposed state, they are susceptible to environmental factors such as dust and liquid splashes, which not only shorten their service life but may also cause poor contact due to impurities. Furthermore, traditional fusible links have low positioning accuracy during installation, making them prone to displacement and further exacerbating contact problems, failing to meet the stability and safety requirements of equipment. Therefore, this invention proposes a fusible link with an anti-collision plastic shell. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a heat-fused fuse with an anti-collision plastic shell, so as to solve the problems of insufficient protection, easy displacement and poor contact mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a thermosetting fuse with an anti-collision plastic shell, including a shell, wherein a triangular plate is fixedly connected to one side of the shell to realize the installation and fixation of the entire thermosetting fuse assembly; The inside of the housing is equipped with a thermal fuse body, and the two ends of the thermal fuse body are respectively welded with plug-in conductors to enable the thermal fuse assembly to be quickly installed through the plug-in conductors. The inner cavity of the outer shell is filled with sealant to achieve a sealing operation inside the outer shell.

[0006] The present invention is further configured such that a positioning protrusion is fixedly connected to one end of the bottom of the outer shell.

[0007] Through the above technical solution, the positioning protrusions can be precisely matched with the positioning grooves or positioning holes of the external installation station to form a mechanical positioning fit, avoiding the displacement of the thermal fuse assembly during installation, ensuring the accuracy of the installation position, and laying the foundation for the stability of subsequent circuit connections.

[0008] The present invention is further configured such that: two sets of limiting posts are symmetrically fixedly connected to the inner wall of the outer shell near the middle position, and both sets of limiting posts are semi-cylindrical, while the arc surface abuts against the outer wall of the heat-fused fuse body.

[0009] Through the above technical solution, the limiting post of the semi-cylindrical structure can increase the contact area with the outer wall of the fuse body, which can not only avoid pressure damage to the fuse body shell, but also form a bidirectional limiting force through the clamping force of the arc surface, restricting the fuse body from shaking in the horizontal or vertical direction inside the shell, ensuring its fixed position, and preventing the pin contact from becoming loose due to external forces such as vibration.

[0010] The present invention is further configured such that: a locking block A and a locking block B are symmetrically fixedly connected at the corners of the inner wall of the outer shell, and the opposite surfaces of the two sets of locking blocks A and B are respectively engaged and connected to the plug-in conductor.

[0011] Through the above technical solution, the card block A and card block B form a symmetrical clamping structure, and their opposite surfaces can form a tight engagement with the outer wall of the plug-in conductor, restricting the axial displacement and radial rotation of the plug-in conductor, preventing the plug-in conductor from loosening or falling off due to external force pulling or vibration, and ensuring a stable connection between the thermal fuse body and the external circuit.

[0012] The present invention is further provided that: the triangular plate has a mounting hole near the top corner.

[0013] Through the above technical solution, screws, bolts and other fasteners can be inserted through the mounting holes to firmly fix the triangular plate to the external mounting plane, thereby achieving stable installation of the entire thermal fuse assembly, distributing the force on the assembly, avoiding instability caused by single-point fixing, and the triangular structure of the triangular plate has high structural strength, which can improve the assembly's resistance to external forces.

[0014] The present invention is further configured such that: the outer walls of the two plug-in conductors are symmetrically fixedly connected with protrusions near the middle position, and wire holes are opened near the end face of each conductor.

[0015] Through the above technical solution, the protrusion can form a snap-fit ​​with the groove on the inner wall of the slot when the plug-in conductor is connected to the external slot, which enhances the tightness of the connection after plugging and prevents loosening; the wire hole can be used to pass through the wire or cable tie to fix the external connection wire, avoid the wire from being pulled and causing stress on the welding point of the plug-in conductor, protect the integrity of the welding point, and further improve the stability of the circuit connection.

[0016] The present invention is further configured such that the sealant is a resin adhesive.

[0017] Through the above technical solution, the resin adhesive has good sealing and insulation properties. After pouring, it can fill the gaps inside the shell to form a continuous sealing layer, which isolates dust, moisture and liquid impurities in the external air and prevents them from entering the shell and corroding the thermal fuse body or plug conductor. At the same time, the insulation property of the resin adhesive can avoid the risk of leakage of internal components, and after curing, it has a certain elasticity, which can buffer the impact of external vibration on internal components.

[0018] The beneficial effects of this utility model are as follows: 1. The present invention proposes a thermocouple with an anti-collision plastic shell, which, by setting a plastic shell with a limiting post, can prevent the thermocouple from shaking inside the shell and solve the problem that traditional thermocouples without shells are prone to poor contact due to displacement. 2. The present invention proposes a thermosetting fuse with an anti-collision plastic shell, which provides physical protection against collisions, scratches, dust, or liquid splashes through the plastic shell, solving the problem that traditional thermosetting fuses are exposed to the outside and are easily damaged by external forces or environmental impurities, resulting in a shortened service life. Attached Figure Description

[0019] Figure 1 This is a first structural diagram of a heat-fused fuse with an anti-collision plastic shell according to the present invention; Figure 2 This is a second structural diagram of a heat-fused fuse with an anti-collision plastic shell according to the present invention; Figure 3 This is a third structural diagram of a heat-fused fuse with an anti-collision plastic shell according to the present invention; Figure 4 This is an internal structural diagram of a thermal fuse with an anti-collision plastic shell according to the present invention.

[0020] In the diagram: 1. Outer shell; 11. Positioning protrusion; 12. Limiting post; 13. Locking block A; 14. Locking block B; 2. Triangular plate; 3. Thermo-fusible fuse body; 4. Connecting conductor; 41. Protrusion; 42. Wire hole; 5. Sealant. 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 Figure 2 and Figure 4As shown, a thermocouple with an anti-collision plastic shell includes a shell 1. A positioning protrusion 11 is fixedly connected to one end of the bottom of the shell 1. The positioning protrusion 11 can precisely fit with the positioning groove or positioning hole of the external installation position to form a mechanical positioning fit, preventing the thermocouple assembly from shifting during installation and ensuring the accuracy of the installation position. This lays the foundation for the stability of subsequent circuit connections. Two sets of limiting posts 12 are symmetrically fixedly connected to the inner wall of the shell 1 near the middle. Both sets of limiting posts 12 are semi-cylindrical, and their arc surfaces abut against the outer wall of the thermocouple body 3. The semi-cylindrical structure of the limiting posts 12 increases the contact area with the outer wall of the thermocouple body 3, thus preventing damage to the outer wall of the thermocouple body 3. The shell causes pressure damage, and the clamping force of the arc surface forms a bidirectional limit, restricting the movement of the thermal fuse body 3 in the horizontal or vertical direction inside the shell 1, ensuring its fixed position, and preventing the pin contact from loosening due to external forces such as vibration. The inner wall corners of the shell 1 are symmetrically fixed with locking blocks A13 and B14. The opposite faces of the two sets of locking blocks A13 and B14 are respectively engaged with the plug conductor 4. The locking blocks A13 and B14 form a symmetrical clamping structure, and their opposite faces can form a tight engagement with the outer wall of the plug conductor 4, restricting the axial displacement and radial rotation of the plug conductor 4, and preventing the plug conductor 4 from loosening or falling off due to external pulling or vibration, ensuring a stable connection between the thermal fuse body 3 and the external circuit.

[0023] like Figure 1 As shown, a triangular plate 2 is fixedly connected to one side of the outer casing 1 to install and fix the entire thermal fuse assembly. The triangular plate 2 has a mounting hole 21 near the top corner. Screws, bolts and other fasteners can be inserted through the mounting hole 21 to firmly fix the triangular plate 2 to the external mounting plane, thereby achieving stable installation of the entire thermal fuse assembly, distributing the force on the assembly, and avoiding installation instability caused by single-point fixing. At the same time, the triangular structure of the triangular plate 2 has high structural strength, which can improve the assembly's resistance to external forces.

[0024] like Figure 2 and Figure 3 As shown, the thermal fuse body 3 is installed inside the outer casing 1, and the pins at both ends of the thermal fuse body 3 are respectively welded with plug-in conductors 4 to enable the thermal fuse assembly to be quickly installed through the plug-in conductors 4. The outer walls of the two plug-in conductors 4 are symmetrically fixed with protrusions 41 near the middle, and wire holes 42 are opened near the end face. When the plug-in conductors 4 are connected to the slot, they can form a snap-fit ​​with the groove on the inner wall of the slot to enhance the tightness of the connection after plugging and prevent loosening. The wire holes 42 can be used to pass wires or cable ties to fix the external connecting wires, avoid the wires from being pulled and causing stress on the welding point with the plug-in conductors 4, protect the integrity of the welding point, and further improve the stability of the circuit connection.

[0025] like Figure 1 As shown, the inner cavity of the outer shell 1 is filled with sealant 5 to achieve a sealing operation inside the outer shell 1. The sealant 5 is a resin adhesive, which has good sealing and insulation properties. After being poured, it can fill the gaps inside the outer shell 1 to form a continuous sealing layer, isolating dust, moisture and liquid impurities in the external air and preventing them from entering the inner shell 1 and corroding the thermal fuse body 3 or the plug conductor 4. At the same time, the insulation properties of the resin adhesive can avoid the risk of leakage of internal components, and after curing, it has a certain degree of elasticity, which can buffer the impact of external vibration on internal components.

[0026] In use, this utility model first positions the device with the external installation station via the positioning protrusion 11 at the bottom of the outer shell 1 to ensure accurate installation. Then, fasteners are inserted through the mounting holes 21 of the triangular plate 2 to fix the component. Subsequently, the external circuit wires are connected to the plug-in conductor 4, and the protrusion 41 is used to enhance the stability of the connection. The wires can be fixed by the wire hole 42. The limiting post 12, the locking block A13 and the locking block B14 inside the outer shell 1 fix the thermocouple body 3 and the plug-in conductor 4 respectively. The sealant 5 isolates external impurities, ultimately achieving stable installation and safety protection.

[0027] 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 thermosetting fuse with an anti-collision plastic shell, comprising a shell (1), characterized in that: The bottom of the outer shell (1) is fixedly connected to a positioning protrusion (11) near one end. The inner wall of the outer shell (1) is symmetrically fixedly connected to two sets of limiting posts (12) near the middle. Both sets of limiting posts (12) are semi-cylindrical and their arc surfaces are pressed against the outer wall of the heat-fused fuse body (3). The inner wall corner of the outer shell (1) is symmetrically fixed with a locking block A (13) and a locking block B (14), and the opposite sides of the two sets of locking blocks A (13) and B (14) are respectively engaged and connected to the plug-in conductor (4). A triangular plate (2) is fixedly connected to one side of the outer shell (1) to realize the installation and fixation of the entire thermal fuse assembly; The inside of the outer shell (1) is equipped with a thermal fuse body (3), and the two ends of the thermal fuse body (3) are respectively welded with plug-in conductors (4) so ​​as to realize the quick installation operation of the thermal fuse assembly through the plug-in conductors (4). The outer walls of the two plug-in conductors (4) are symmetrically fixed with protrusions (41) near the middle position, and wire holes (42) are opened near the end face. The inner cavity of the outer shell (1) is filled with sealant (5) to achieve a sealing operation inside the outer shell (1).

2. A thermosetting fuse with an anti-collision plastic shell according to claim 1, characterized in that: The triangular plate (2) has a mounting hole (21) near its apex.

3. A thermosetting fuse with an anti-collision plastic shell according to claim 1, characterized in that: The sealant (5) is a resin adhesive.

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