A thermal protector device

Abstract

The utility model relates to a thermal protector device, including an open thermal protector body, which is characterized in that it also includes a fixing seat that can be fixedly connected to an electrical appliance, a protection groove is provided on the fixing seat, a temperature sensing hole is provided at the bottom of the protection groove, the open thermal protector body is arranged on the fixing seat, and the temperature sensing action mechanism of the open thermal protector body is placed in the protection groove. The utility model can play a very good shielding and protective role on the temperature sensing action mechanism, thereby greatly reducing the probability of the temperature sensing action mechanism being scratched or intentionally damaged, and it can help to ensure that the temperature sensing action mechanism maintains high accuracy for a long time, thereby enabling the thermal protector device to have high safety for a long time; and the thermal protector is very easy to assemble, which can help to improve assembly efficiency; and it can ensure that the temperature sensing action mechanism is accurate in temperature sensing, which can help to reduce safety hazards; and it can be conveniently fixed on related electrical appliances, which can help to reduce the difficulty of assembling related electrical appliances.

Description

Technical Field

[0001] The utility model relates to the technical field of overheat protection, in particular to a thermal protector device. Background Art

[0002] At present, many thermal protectors (also known as: thermostats) adopt an open structure. The temperature sensing mechanism (the temperature sensing mechanism is composed of a moving contact, a bimetallic strip and a moving contact, etc.) on this thermal protector is mostly placed on the top of its base, that is, the moving contact and the bimetallic strip are placed on the top of the base. For example: thermal protectors disclosed in patent documents such as China's authorization announcement numbers CN218525506U, CN218525505U, CN205881812U, CN215418016U and CN216412947U. On this thermal protector, the moving contact and / or the bimetallic strip are directly exposed to the outside, so it is easy to scratch the moving contact and / or the bimetallic strip during packaging, transportation and installation. Since the moving contact and the bimetallic strip are both very thin metal sheets, the structural strength of the moving contact and the bimetallic strip is limited. In this way, when the scratching force is slightly greater, it is easy to cause the movable contact piece and / or the bimetallic strip to deform, which can easily reduce the accuracy of the movable contact piece and / or the bimetallic strip, and thus reduce safety. Moreover, when this thermal protector is provided to the user manufacturer, if the user manufacturer has ulterior motives, it is easy to cause the movable contact piece and / or the bimetallic strip to have a slight deformation that is difficult to distinguish, thereby reducing the accuracy of the thermal protector, requiring the thermal protector manufacturer to rework, which will cause economic losses to the manufacturer.

[0003] Although there are now thermal protectors with shells, most of these thermal protectors embed the entire thermal protection element in a sealed shell. For example: thermal protectors disclosed in patent documents such as China's authorization announcement numbers CN202454497U, CN206849775U, CN202013849U, CN218602340U and CN216902674U. When assembling such thermal protectors, most of them are manually embedded in the shell. Because the volume of the thermal protection element is generally small, the embedding operation of the thermal protection element is difficult, which easily leads to low assembly efficiency. And because the thermal protection element is completely in a sealed shell, the shell easily hinders the heat transfer to the thermal protection element, which easily leads to inaccurate temperature sensing and action of the thermal protection element, and then easily brings safety hazards.

[0004] At the same time, most thermal protectors now do not have a fixing position, so it is inconvenient to fix the thermal protector on the relevant electrical appliances, which easily increases the difficulty of assembling the relevant electrical appliances.

[0005] Therefore, it is necessary to redesign the structure of the thermal protector. Utility Model Content

[0006] The purpose of the present utility model is to solve the above-mentioned problems and shortcomings, and to provide a thermal protector device, which can provide very good shielding and protection for the temperature sensing action mechanism, thereby greatly reducing the probability of the temperature sensing action mechanism being scratched or intentionally damaged, and can help ensure that the temperature sensing action mechanism maintains high accuracy for a long time, thereby enabling the thermal protector device to have high safety for a long time; and the thermal protector is very easy to assemble, which can help improve assembly efficiency; and it can ensure the temperature sensing accuracy of the temperature sensing action mechanism, which can help reduce safety hazards; and it can be conveniently fixed on related electrical appliances, which can help reduce the difficulty of assembling related electrical appliances.

[0007] The technical solution of the utility model is achieved in this way:

[0008] A thermal protector device includes an open thermal protector body, which is characterized in that it also includes a fixing base that can be fixedly connected to an electrical appliance, the fixing base is provided with a protection groove, the bottom of the protection groove is provided with at least one temperature sensing hole that penetrates to the outside of the fixing base, the open thermal protector body is arranged on the fixing base, and the temperature sensing action mechanism of the open thermal protector body is placed in the protection groove.

[0009] Preferably, the fixing seat is an insulating fixing seat, and the connection terminals of the open thermal protector body are fixed on the fixing seat.

[0010] Preferably, the thermal protector device further comprises a wire assembly, an end of which is fixedly connected to a wiring terminal.

[0011] Preferably, the wire assembly includes a wire and a conductive sheet, the insulating layer at the end of the wire is exposed to form a wire core head, one end of the conductive sheet is riveted and fixed to a fixing seat together with a terminal, and the other end of the conductive sheet is bent to form a clamping portion, which is clamped on the wire core head.

[0012] Preferably, at least one penetrating positioning hole is formed on the fixing seat.

[0013] Preferably, at least one ventilation gap is provided on the edge of the groove of the protection groove.

[0014] Preferably, the ventilation gap is opened through the notch of the protection groove.

[0015] Preferably, the fixing seat includes a protective seat and a fixing plate, the protective groove is opened on the top surface of the protective seat, the temperature sensing hole penetrates to the bottom surface of the protective seat, the fixing plate is arranged on the side wall of the protective seat, and the open thermal protector body is arranged on the protective seat.

[0016] Preferably, a mounting notch is provided on the side wall of the fixing seat.

[0017] Preferably, the thermal protector device further comprises a fuse, which is arranged in the installation notch, and the two ends of the fuse are respectively fixed on a fixing seat and one of the wiring terminals of the open thermal protector body.

[0018] The beneficial effects of the utility model are as follows: on the thermal protector device, the temperature sensing action mechanism of the open thermal protector body is placed in the protection groove, which can avoid the temperature sensing action mechanism being directly exposed to the outside, so as to provide very good shielding and protection for the temperature sensing action mechanism, which can not only greatly reduce the probability of scratching the temperature sensing action mechanism during packaging, transportation and installation, but also greatly reduce the probability of the user manufacturer deliberately damaging the temperature sensing action mechanism, thereby being conducive to ensuring that the temperature sensing action mechanism maintains high accuracy for a long time, and thus enabling the thermal protector device to have high safety for a long time; and this can reduce the probability of the thermal protector being maliciously returned to the factory by the user manufacturer, and can avoid unnecessary economic losses to the manufacturer.

[0019] Since the open thermal protector body is arranged on the fixing seat, and the temperature sensing mechanism is placed in the protection groove, the assembly of the open thermal protector body and the fixing seat does not require complicated embedding operations, which can help reduce the difficulty of the assembly operation, thereby helping to improve the assembly efficiency. By providing a temperature sensing hole that penetrates the fixing seat at the bottom of the protection groove, it is convenient for heat to act on the temperature sensing mechanism in the protection groove, thereby helping to ensure that the temperature sensing and action of the temperature sensing mechanism are accurate, and thus helping to reduce safety hazards.

[0020] By setting the fixing seat, it can be conveniently fixedly connected to the electrical appliance, so that the thermal protector device can be conveniently fixed on the relevant electrical appliance, thereby helping to reduce the difficulty of assembling the relevant electrical appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the three-dimensional structural schematic diagrams of the first subdivision scheme in the utility model.

[0022] Figure 2 This is the second schematic diagram of the three-dimensional structure of the first subdivision scheme in the utility model.

[0023] Figure 3 This is a schematic diagram of the split structure of the first subdivision scheme in the utility model.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing seat of the first subdivision scheme in the utility model.

[0025] Figure 5 This is one of the three-dimensional structural schematic diagrams of the second subdivision scheme in the utility model.

[0026] Figure 6 This is the second schematic diagram of the three-dimensional structure of the second subdivision scheme in the utility model.

[0027] Figure 7 This is a schematic diagram of the split structure of the second subdivision scheme in the present utility model.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing base of the second subdivision scheme in the utility model.

[0029] Fig. 9 It is a three-dimensional structural schematic diagram of the open thermal protector body in the utility model. DETAILED DESCRIPTION

[0030] like Figures 1 to 4 As shown, a thermal protector device described in the utility model includes an open thermal protector body 1. To achieve the inventive purpose of the utility model, it also includes a fixing base 2 that can be fixedly connected to an electrical appliance. A protection groove 21 is provided on the fixing base 2. The bottom of the protection groove 21 is provided with at least one temperature sensing hole 22 that penetrates to the outside of the fixing base 2. The open thermal protector body 1 is arranged on the fixing base 2, and the temperature sensing action mechanism 11 of the open thermal protector body 1 is placed in the protection groove 21.

[0031] In the thermal protector device, the temperature sensing action mechanism 11 of the open thermal protector body 1 is placed in the protection groove 21, which can avoid the temperature sensing action mechanism 11 being directly exposed to the outside, so as to provide very good shielding and protection for the temperature sensing action mechanism 11. This can not only greatly reduce the probability of scratching the temperature sensing action mechanism 11 during packaging, transportation and installation, but also greatly reduce the probability of the user manufacturer deliberately damaging the temperature sensing action mechanism 11, thereby ensuring that the temperature sensing action mechanism 11 maintains high accuracy for a long time, and thus the thermal protector device has high safety for a long time; and this can reduce the probability of the thermal protector being maliciously returned to the factory by the user manufacturer, and can avoid unnecessary economic losses to the manufacturer.

[0032] Since the open thermal protector body 1 is arranged on the fixing seat 2, and the temperature sensing action mechanism 11 is placed in the protection groove 21, the assembly of the open thermal protector body 1 and the fixing seat 2 does not require complicated embedding operations, which can help reduce the difficulty of the assembly operation, thereby helping to improve the assembly efficiency. By providing a temperature sensing hole 22 that penetrates the bottom of the protection groove 21 to the outside of the fixing seat 2, it is convenient for heat to act on the temperature sensing action mechanism 11 in the protection groove 21, thereby helping to ensure that the temperature sensing and action of the temperature sensing action mechanism 11 are accurate, and further helping to reduce safety hazards.

[0033] By providing the fixing base 2, it can be conveniently fixedly connected to the electrical appliance, so that the thermal protector device can be conveniently fixed on the relevant electrical appliance, thereby helping to reduce the difficulty of assembling the relevant electrical appliance.

[0034] The fixing seat 2 can be assembled with the existing thermal protector, and there is no need to redesign the structure of the thermal protector, which can help reduce the cost investment of the thermal protector production enterprise.

[0035] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Fig. 9 As shown, the temperature sensing mechanism 11 includes a stacked movable contact piece 111 and a bimetallic strip 112, and the bimetallic strip 112 can push the movable contact piece 111 to swing, so that the movable contact 12 on the movable contact piece 111 is separated from the static contact 13, so that the open thermal protector body 1 can achieve the overheat protection function. The movable contact piece 111 and the bimetallic strip 112 are both in the protection groove 21, so that the movable contact piece 111 and the bimetallic strip 112 can be prevented from being exposed to the outside, and can play a very good protective role for the movable contact piece 111 and the bimetallic strip 112, and avoid touching or being scratched by foreign objects during the stacking, storage and packaging process, thereby greatly reducing the probability of abnormal warping, deformation and damage of the movable contact piece 111 and the bimetallic strip 112, thereby ensuring that the open thermal protector body 1 can work normally for a long time, and the thermal protector device can play a very good protective function.

[0036] The utility model provides two subdivision schemes, wherein Figures 1 to 4 What is shown is a schematic diagram of the overall structure and components of the first subdivision scheme. Figures 5 to 8 Shown is a schematic diagram of the overall structure and components of the second subdivision scheme.

[0037] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the fixing seat 2 is an insulating fixing seat, and the connection terminal 14 of the open thermal protector body 1 is fixed on the fixing seat 2. This can facilitate the convenient and stable fixing of the open thermal protector body 1 on the fixing seat 2, thereby helping to improve the convenience and reliability of the thermal protector device assembly.

[0038] The fixing base 2 is made of a high temperature resistant and insulating material, such as a high temperature resistant and insulating plastic, which is not only convenient to manufacture but also ensures high safety in use.

[0039] like Figures 1 to 3 , Figures 5 to 7As shown, the thermal protector device also includes a wire assembly 3, and the end of the wire assembly 3 is fixedly connected to the terminal 14. This makes it easier to assemble and subsequently connect the wire assembly 3, and ensures that the connection of the wire assembly 3 is very stable and reliable, thereby helping to further improve the reliability and applicability of the thermal protector device.

[0040] The wiring terminal 14 can be fixed to the fixing base 2 by rivets, screws or welding. When it is necessary to weld the wiring terminal 14 on the fixing base 2, a welding portion can be buried or embedded in the fixing base 2 for welding the wiring terminal. The wire assembly 3 can be fixed to the wiring terminal 14 by rivets, screws or welding, which can facilitate the realization of a very stable and reliable connection, thereby ensuring that the thermal protector device has a very high reliability.

[0041] like Figure 2 and Figure 3 As shown, the wire assembly 3 includes a wire 31 and a conductive sheet 32. The insulating layer 311 at the end of the wire 31 is exposed to form a wire core head 312. One end of the conductive sheet 32 ​​is riveted and fixed to the fixing seat 2 together with the terminal 14. The other end of the conductive sheet 32 ​​is bent to form a clamping portion 321. The clamping portion 321 clamps on the wire core head 312. Such a wire assembly 3 is very simple and reliable, which not only facilitates the manufacture of the wire assembly 3, but also ensures that the installation and positioning of the wire assembly 3 is very stable and reliable, thereby further improving the reliability of the thermal protector device.

[0042] like Figure 3 As shown, in the actual manufacturing process, the other end of the conductive sheet 32 ​​is further bent to form a clamping sheet 322, and the clamping sheet 322 clamps on the insulating layer 311 of the wire 31. This can further enhance the reliability and stability of the connection between the wire 31 and the conductive sheet 32.

[0043] like Figure 2 and Figure 3 As shown, in the actual manufacturing process, the two connection terminals 14 of the open thermal protector body 1 are fixed to the fixing seat 2 by the first rivets 10, and the two first rivets 10 are riveted to fix a wire assembly 3. In this way, the two connection terminals 14 of the open thermal protector body 1 can be connected to the wire assembly 3 stably and reliably, thereby meeting the actual use requirements very well.

[0044] The wire 31 is a soft wire, and its placement angle can be adjusted and placed at will, so that it can be used in more installation environments. Or when fixed by rivets or screws, the conductive sheet 32 ​​can rotate around the rivets or screws, so that the placement angle of the wire 31 can be adjusted and placed at will.

[0045] like Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, at least one through positioning hole 23 is formed on the fixing base 2. The positioning hole 23 can be inserted with screws or rivets, which can facilitate the fixing base 2 to be stably fixed on the relevant electrical product or circuit board by screws or rivets, thereby facilitating the requirement of stable installation.

[0046] like Figures 2 to 4 , Figures 6 to 8 As shown, at least one ventilation gap 211 is provided on the edge of the notch of the protection groove 21. In this way, while protecting the temperature sensing action mechanism 11, the probability of heat acting on the temperature sensing action mechanism 11 is further increased, thereby further improving the action accuracy of the thermal protector device.

[0047] like Figure 4 and Figure 8 As shown, the ventilation gap 211 is opened through the notch of the protection groove 21. This can achieve better ventilation effect, which can help the temperature sensing mechanism 11 to sense temperature more accurately, so that the temperature sensing mechanism 11 can sense temperature more normally and accurately and perform accurate protection actions.

[0048] like Figures 1 to 8 As shown, the fixing seat 2 includes a protection seat 24 and a fixing sheet 25. The protection groove 21 is provided on the top surface of the protection seat 24. The temperature sensing hole 22 penetrates to the bottom surface of the protection seat 24. The fixing sheet 25 is provided on the side wall of the protection seat 24. The open thermal protector body 1 is provided on the protection seat 24. The use of the protection seat 24 can facilitate the provision of a suitable thickness for the opening of the protection groove 21, thereby facilitating the high structural strength of the installation location of the open thermal protector body 1; the use of the fixing sheet 25 can control the use of raw materials while meeting the fixing requirements, thereby facilitating the control of manufacturing costs; such a fixing seat 2 is very simple and reliable.

[0049] like Figures 1 to 4As shown, the open thermal protector body 1 is in the shape of a strip extending laterally, and the temperature sensing action mechanism 11 is also in the shape of a strip extending laterally, and the protection groove 21 is in the shape of a strip matching the temperature sensing action mechanism 11; the thickness of the fixing plate 25 is less than the thickness of the protection seat 24, the fixing plate 25 and the protection seat 24 are an integrally formed structure, the side of the fixing plate 25 is connected to the lower side of the protection seat 24, the positioning hole 23 is vertically penetrated through the fixing plate 25, and the ventilation gap 211 is longitudinally penetrated through the protection seat 24; the left and right sides of the protection groove 21 are The side protection seats 24 are respectively provided with vertically penetrating rivet holes 212, and both rivet holes 212 are countersunk holes with narrow upper part and wide lower part, which can not only control the amount of raw materials used on the protection seats 24, but also avoid the need for overly long rivets for fixing; the two wiring terminals 14 of the open thermal protector body 1 are respectively located on the left and right ends thereof, and the two wiring terminals 14 are respectively overlapped on the upper openings of the two rivet holes 212; the two first rivets 10 respectively penetrate the two rivet holes 212 to fix the corresponding wiring terminals 14 and the wire assembly 3 on the protection seat 24. In this way, a thermal protector device that meets actual use can be formed.

[0050] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Fig. 9 As shown, the temperature sensing action mechanism 11 is arranged on the bottom surface of the insulating base 15 of the open thermal protector body 1, and the lower end of the insulating base 15 is also placed in the protection groove 21, which can better protect the temperature sensing action mechanism 11.

[0051] like Figure 3 and Figure 7 As shown, in the actual manufacturing process, the open thermal protector body 1 may be without a PTC chip or with a PTC chip 16. The open thermal protector body 1 may adopt a conventional open thermal protector, which can also meet the actual manufacturing requirements.

[0052] like Figure 1 , Figure 4 , Figure 5 and Figure 8 As shown, when one temperature sensing hole 22 is provided, a slightly larger temperature sensing hole 22 is provided corresponding to the temperature sensing action mechanism 11; when multiple temperature sensing holes 22 are provided, multiple slightly smaller temperature sensing holes 22 are provided corresponding to the temperature sensing action mechanism 11. This can well meet the temperature sensing requirements.

[0053] The fixing seat 2 can facilitate standardized production, thereby reducing the efficiency and cost of batch manufacturing.

[0054] like Figures 5 to 8As shown, a mounting notch 26 is provided on the side wall of the fixing seat 2. This not only facilitates the opening of the mounting notch 26, but also provides a suitable mounting position for related electrical components by utilizing the mounting notch 26, thereby avoiding the overall volume being too large when adding related electrical components to the thermal protector device, thereby facilitating use in a small space, which can ensure that the thermal protector device has a wide range of applicability.

[0055] like Figures 5 to 7 As shown, the thermal protector device further includes a fuse 4, which is arranged in the installation notch 26, and the two ends of the fuse 4 are respectively fixed on the fixing seat 2 and one of the wiring terminals 14 of the open thermal protector body 1. In this way, not only the purpose of stably installing the fuse 4 can be achieved, but also the use performance of the thermal protector device can be enhanced, thereby helping to further improve the safety of the use of the thermal protector device.

[0056] like Figures 5 to 7 As shown, when the fuse 4 is provided, two wire assemblies 3 are still used, one end of the fuse 4 and one of the wiring terminals 14 of the open thermal protector body 1 are fixed to the fixing seat 2 through a second rivet 20, the other wiring terminal 14 of the open thermal protector body 1 and one of the wire assemblies 3 are fixed to the fixing seat 2 through a third rivet 30, and the other end of the fuse 4 and another wire assembly 3 are fixed to the fixing seat 2 through a fourth rivet 40. When in use, the two wire assemblies 3 can be connected in series in the corresponding circuit, so that the actual use requirements can be met.

[0057] In the above-mentioned fixing process using rivets, both hollow rivets and solid rivets can be used, which can meet the actual assembly requirements.

Claims

1. A thermal protector device, comprising an open thermal protector body (1), characterized in that: It also comprises a fixing seat (2) capable of being fixedly connected to an electrical appliance, the fixing seat (2) being provided with a protection groove (21), the bottom of the protection groove (21) being provided with at least one temperature sensing hole (22) penetrating to the outside of the fixing seat (2), the open type thermal protector body (1) being arranged on the fixing seat (2), and the temperature sensing action mechanism (11) of the open type thermal protector body (1) being arranged in the protection groove (21).

2. The thermal protector device according to claim 1, characterized in that: The fixing seat (2) is an insulating fixing seat, and the connection terminal (14) of the open thermal protector body (1) is fixed on the fixing seat (2).

3. The thermal protector device according to claim 2, characterized in that: It also comprises a wire assembly (3), the end of which is fixedly connected to a wiring terminal (14).

4. The thermal protector device according to claim 3, characterized in that: The wire assembly (3) comprises a wire (31) and a conductive sheet (32); the insulating layer (311) at the end of the wire (31) is exposed to form a wire core head (312); one end of the conductive sheet (32) is riveted and fixed to a fixing seat (2) together with a connecting terminal (14); the other end of the conductive sheet (32) is bent to form a clamping portion (321); the clamping portion (321) is clamped on the wire core head (312).

5. The thermal protector device according to claim 1, characterized in that: The fixing seat (2) is provided with at least one penetrating positioning hole (23).

6. The thermal protector device according to claim 1, characterized in that: At least one ventilation gap (211) is provided on the edge of the groove of the protection groove (21).

7. The thermal protector device according to claim 6, characterized in that: The ventilation gap (211) is opened through the notch of the protection groove (21).

8. The thermal protector device according to claim 1, characterized in that: The fixing seat (2) comprises a protection seat (24) and a fixing plate (25); the protection groove (21) is provided on the top surface of the protection seat (24); the temperature sensing hole (22) penetrates to the bottom surface of the protection seat (24); the fixing plate (25) is arranged on the side wall of the protection seat (24); and the open thermal protector body (1) is arranged on the protection seat (24).

9. The thermal protector device according to claim 1, characterized in that: A mounting notch (26) is provided on the side wall of the fixing seat (2).

10. The thermal protector device according to claim 9, characterized in that: It also includes a fuse (4), which is arranged in the installation notch (26), and has two ends of the fuse (4) respectively fixed to the fixing seat (2) and one of the connection terminals (14) of the open thermal protector body (1).

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