A temperature controlled switch having a protective cover

Abstract

The utility model discloses a temperature control switch with protective cover, including first electric seat, second electric seat, connecting seat, heat deformation component, moving contact block and fixed contact block. Still be provided with the protective cover, and this protective cover is by the enclosure board that encloses in the connecting seat outside and is located the sheltering portion above moving, fixed contact block contact part, and the sheltering portion can adopt the full enclosed roof or local roof, the utility model discloses not only can effectively prevent the outside mechanical impact, prevent the foreign matter to roll in, still can shelter the electric arc that produces when on-off, has promoted the security and reliability.

Description

Technical Field

[0001] This utility model relates to the field of micro switch technology, and in particular to a temperature control switch with a protective cover. Background Technology

[0002] Traditional temperature control switches with protective covers typically include core components such as moving contacts, fixed contacts, and heat-deformable parts. They can disconnect the circuit when the temperature rises abnormally and reconnect it when the temperature returns to normal, providing a certain level of protection. However, most existing temperature control switches with protective covers use an open structure and lack external protection, which presents several problems: During product installation, due to the lack of protective casing, temperature control switches with protective covers are easily subjected to external mechanical forces such as squeezing or collisions, which can cause internal structural deformation or damage, affecting their normal operation or even causing them to fail completely.

[0003] In practical applications such as hair dryers, users' hair can easily get caught inside the temperature control switch with a protective cover during use. This can not only damage the temperature controller itself, but also pose a certain safety hazard.

[0004] Temperature control switches with protective covers can produce electric arc flashes during switching, especially noticeable under high temperature and high current conditions. Existing designs lack effective shielding, and the exposed arc not only affects the product's aesthetics but also easily causes user anxiety, reducing the user experience.

[0005] Therefore, it is necessary to provide a temperature control switch with a more reasonable structure and a protective cover, which can not only ensure its temperature control and safety functions, but also effectively avoid external interference, improve safety and user experience. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a temperature control switch with a protective cover.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a temperature control switch with a protective cover, comprising a first conductive base, a second conductive base, and a connecting base connected between the first conductive base and the second conductive base; further comprising a heat-deformation component, the heat-deformation component being connected to the first conductive base, and having a movable contact on the heat-deformation component, the movable contact being in constant contact with a fixed contact on the second conductive base, and the heat-deformation component being capable of elastic deformation upon heating to drive the movable contact away from or in contact with the fixed contact; further comprising a protective cover, the protective cover comprising an enclosure plate surrounding the outside of the connecting base, and a shielding portion disposed on the upper part of the enclosure plate; the shielding portion being located above the contact area between the movable contact and the fixed contact; the shielding portion being a fully enclosed top plate completely covering the area above the contact area; or a partial top plate partially covering the area above the contact area, thus forming an open top of the protective cover.

[0008] As a preferred embodiment of this utility model, the protective cover includes a left shell and a right shell, which are assembled and connected to the outside of the connecting seat. The left shell has locking blocks on both sides, and the right shell has buckles on both sides that are adapted to the locking blocks. The left shell and the right shell are connected by the cooperation of the locking blocks and buckles.

[0009] As a preferred technical solution of this utility model, the left and right shells are respectively provided with blocking blocks on opposite sides, and the two blocking blocks abut against the side wall of the connecting seat after the two shells are snapped together.

[0010] As a preferred embodiment of this utility model, the heat-deformable component includes a movable plate and a temperature plate; one end of the movable plate forms a connecting end fixed to the first conductive base, and the other end forms a swing end that can swing up and down, and the movable contact block is installed on the swing end; one end of the temperature plate is clamped to the first conductive base, and the other end is clamped to the swing end, the temperature plate deforms under temperature changes, and drives the swing end to swing through the deformation.

[0011] As a preferred embodiment of this utility model, the moving plate includes a horizontally arranged fixed plate and an inclined swing plate extending from the fixed plate; the first conductive seat is provided with a boss, the fixed plate is provided with a mounting hole, the fixed plate is placed horizontally on the connecting seat, and is fixed to the boss through the mounting hole.

[0012] As a preferred embodiment of this utility model, the top of the connecting seat has a supporting protrusion, the moving piece has a hollow hole, and the supporting protrusion passes upward through the hollow hole and is supported in the middle of the temperature plate.

[0013] As a preferred embodiment of this utility model, the first conductive base is provided with an upwardly extending first locking plate, and the moving piece is provided with a second locking plate disposed opposite to the first locking plate; the two ends of the temperature plate are respectively provided with locking slots, and the locking slots are respectively engaged with the inner sides of the first locking plate and the second locking plate.

[0014] As a preferred embodiment of this utility model, the upper ends of the first and second clamping plates are both provided with bent portions that bend toward the temperature plate, which are used to restrict the temperature plate from disengaging from the clamping position.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a protective cover composed of an enclosure plate and a shielding part, mechanical squeezing or collision can be avoided. Depending on the installation position of the temperature control switch with the protective cover, it can effectively isolate the intrusion of external foreign objects (such as hair). Especially in the field of hair dryers, the enclosure plate is directly facing the blowing direction of the hair dryer, thus preventing hair from getting tangled on the internal components of the temperature control switch with the protective cover. In addition, the shielding part of this solution is located above the contact point of the moving and fixed contacts. This shielding part can reliably block the arc flash generated during the switching process, eliminating the user's concern about the arc and improving the safety and experience of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the protective cover of this utility model using part of the top plate; Figure 2 This is a schematic diagram of the structure of the protective cover of this utility model using part of the top plate; Figure 3 This is a schematic diagram of the structure of the protective cover of this utility model, which uses all the top plates; Figure 4 This is a schematic diagram of the structure of the protective cover of this utility model, which uses all the top plates; Figure 5 This is a schematic diagram of the temperature control switch with a protective cover of this utility model without the protective cover; Figure 6 This is a schematic diagram of the structure of the temperature control switch with a protective cover of this utility model, with the protective cover removed. Figure 7 This is a schematic diagram of the bottom structure of the temperature control switch with a protective cover according to this utility model.

[0017] Reference numerals: 1. First conductive base; 2. Second conductive base; 3. Connecting base; 4. Heat-deformed component; 5. Moving contact block; 6. Fixed contact block; 7. Protective cover; 8. Enclosure plate; 9. Shielding part; 10. Left shell; 11. Right shell; 12. Locking block; 13. Buckle; 14. Moving piece; 15. Temperature plate; 16. Fixing plate; 17. Swinging plate; 18. Boss; 19. Mounting hole; 20. Supporting protrusion; 21. Hole; 22. First locking plate; 23. Second locking plate; 24. Bayonet; 25. Bending part; 26. Blocking block. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1-7 A temperature control switch with a protective cover is shown, including a first conductive base 1, a second conductive base 2, and a connecting base 3 connecting the first conductive base 1 and the second conductive base 2; it also includes a heat-deformation component 4, which is connected to the first conductive base 1 and has a movable contact 5. The movable contact 5 is in constant contact with a fixed contact 6 disposed on the second conductive base 2, and the heat-deformation component 4 can be elastically deformed by heat to drive the movable contact 5 away from or in contact with the fixed contact 6; it also includes a protective cover 7, which includes an enclosure plate 8 (a frame structure formed around the outer periphery of the connecting base 3) surrounding the outside of the connecting base 3, and a shielding part 9 disposed on the upper part of the enclosure plate 8; the shielding part 9 is located above the contact area between the movable contact 5 and the fixed contact 6; the shielding part 9 is a fully enclosed top plate that completely covers the area above the contact area; or a partial top plate that partially covers the area above the contact area, forming an open top on the protective cover 7.

[0021] By setting up a protective cover 7 consisting of an enclosure plate 8 and a shielding part 9, mechanical squeezing or collision can be avoided. Depending on the installation position of the temperature control switch with the protective cover, it can effectively prevent the intrusion of external foreign objects (such as hair). Especially in the field of hair dryers, the enclosure plate 8 is directly facing the blowing direction of the hair dryer, thus preventing hair from getting tangled on the internal components of the temperature control switch with the protective cover. In addition, the shielding part 9 of this solution is located above the contact point of the moving and fixed contacts 6. This shielding part 9 can reliably block the arc flash generated during the switching process, eliminating the user's concern about the arc and improving the safety and experience of use.

[0022] The temperature control switch with a protective cover described in this application can be widely used in the thermal management and overheat protection of various electrical appliances, and is especially suitable for products including but not limited to: personal care appliances (such as hair dryers, combs, and hand dryers), environmental heating equipment (such as fan heaters and electric heaters), kitchen appliances (such as popcorn machines), household appliances (such as washing machines with drying functions and sterilization appliance drying devices), sanitary ware (such as smart toilets), and various heating brackets, etc.

[0023] The protective cover 7 includes a left shell 10 and a right shell 11, which are assembled and connected to the outside of the connecting seat 3. The left shell 10 has locking blocks 12 on both sides, and the right shell 11 has buckles 13 on both sides that are compatible with the locking blocks 12. The left shell 10 and the right shell 11 are connected by the cooperation of the locking blocks 12 and the buckles 13. The enclosure plate 8 of the protective cover 7 adopts a split design (such as the left and right shells 11) and is assembled and connected by the cooperation of the locking blocks 12 and the buckles 13. This structure not only facilitates production and on-site installation, but also ensures that the protective cover 7 can be firmly fixed to the outside of the connecting seat 3, effectively resisting accidental collisions or squeezing during installation or use, and preventing damage to internal precision components due to external forces.

[0024] The left housing 10 and the right housing 11 are respectively provided with blocking blocks 26 on opposite sides, and the two blocking blocks 26 abut against the side wall of the connecting seat 3 after the two housings are snapped together (e.g., Figure 5 As shown, these are the front and rear side walls. Depending on the orientation, they can also be considered as the left and right side walls, depending on the actual situation.

[0025] The heat-deformable assembly 4 includes a movable piece 14 and a temperature plate 15; one end of the movable piece 14 forms a connection end fixed to the first conductive base 1, and the other end forms a swing end that can swing up and down, and the movable contact block 5 is installed on the swing end; one end of the temperature plate 15 is clamped to the first conductive base 1, and the other end is clamped to the swing end. The temperature plate 15 deforms under temperature changes, and drives the swing end to swing through the deformation. In this embodiment, when an electrical malfunction causes a temperature rise, the generated heat is transferred to the heat-deformable component 4 of the first conductive base 1. When the heat-deformable component 4 reaches the set temperature, it deforms due to heat, causing the movable contact 5 of the heat-deformable component 4 to swing upward, thereby moving the movable contact 5 away from the fixed contact 6 of the second conductive base 2, thus cutting off the circuit. When the temperature drops to the set temperature, the heat-deformable component 4 returns to its initial state, and the movable contact 5 swings downward with the heat-deformable component 4, making contact with the fixed contact 6, and the circuit is reconnected. In this embodiment, the temperature plate 15 is commercially available, and the material selection is not specifically described in this application.

[0026] The moving piece 14 includes a horizontally arranged fixed plate 16 and an inclined swing plate 17 extending from the fixed plate 16; the first conductive seat 1 is provided with a boss 18, the fixed plate 16 is provided with a mounting hole 19, the fixed plate 16 is placed horizontally on the connecting seat 3, and is fixed to the boss 18 through the mounting hole 19.

[0027] The top of the connecting seat 3 has a supporting protrusion 20, and the moving piece 14 has a hollow hole 21. The supporting protrusion 20 passes through the hollow hole 21 and is supported in the middle of the temperature plate 15.

[0028] The first conductive base 1 is provided with an upwardly extending first retaining plate 22, and the movable piece 14 is provided with a second retaining plate 23 opposite to the first retaining plate 22. The temperature plate 15 has retaining slots 24 at both ends, which engage with the inner sides of the first retaining plate 22 and the second retaining plate 23 respectively. The upper ends of both the first retaining plate 22 and the second retaining plate 23 are provided with bent portions 25 that curve towards the temperature plate 15, used to prevent the temperature plate 15 from disengaging from the retaining position. The retaining structure design of the retaining slots 24 and the retaining plates in this application allows the installation of the temperature plate 15 without complex tools or procedures, simplifying the assembly process and improving production efficiency.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A temperature control switch with a protective cover, comprising a first conductive base (1), a second conductive base (2), and a connecting base (3) connected between the first conductive base (1) and the second conductive base (2); further comprising a heat-deformation component (4), the heat-deformation component (4) being connected to the first conductive base (1), and the heat-deformation component (4) being provided with a movable contact (5), the movable contact (5) being in constant contact with a fixed contact (6) disposed on the second conductive base (2), and the heat-deformation component (4) being capable of elastic deformation upon heating to drive the movable contact (5) away from or in contact with the fixed contact (6); characterized in that: It also includes a protective cover (7), which includes a surrounding plate (8) surrounding the outside of the connecting seat (3) and a shielding part (9) disposed on the upper part of the surrounding plate (8); the shielding part (9) is located above the contact area between the moving contact block (5) and the fixed contact block (6); the shielding part (9) is a fully enclosed top plate that completely covers the area above the contact area; or a partial top plate that partially covers the area above the contact area so that the top of the protective cover (7) forms an opening.

2. The temperature control switch with a protective cover according to claim 1, characterized in that: The protective cover (7) includes a left shell (10) and a right shell (11). The left shell (10) and the right shell (11) are assembled and connected to the outside of the connecting seat (3) facing each other. The left shell (10) has a locking block (12) on both sides, and the right shell (11) has a buckle (13) on both sides that is adapted to the locking block (12). The left shell (10) and the right shell (11) are connected by the cooperation of the locking block (12) and the buckle (13).

3. The temperature control switch with a protective cover according to claim 2, characterized in that: The left shell (10) and the right shell (11) are respectively provided with blocking blocks (26) on opposite sides, and the two blocking blocks (26) abut against the side wall of the connecting seat (3) after the two shells are connected by the snap fasteners (13).

4. The temperature control switch with a protective cover according to claim 2, characterized in that: The heat-deformable component (4) includes a movable piece (14) and a temperature plate (15); one end of the movable piece (14) forms a connection end fixed to the first conductive base (1), and the other end forms a swing end that can swing up and down, and the movable contact block (5) is installed on the swing end; one end of the temperature plate (15) is clamped to the first conductive base (1), and the other end is clamped to the swing end, and the temperature plate (15) deforms under temperature change, and drives the swing end to swing through the deformation.

5. The temperature control switch with a protective cover according to claim 4, characterized in that: The moving piece (14) includes a horizontally arranged fixed plate (16) and an inclined swing plate (17) extending from the fixed plate (16); the first conductive seat (1) is provided with a boss (18), the fixed plate (16) is provided with a mounting hole (19), the fixed plate (16) is placed horizontally on the connecting seat (3), and is fixed to the boss (18) through the mounting hole (19).

6. The temperature control switch with a protective cover according to claim 4, characterized in that: The top of the connecting seat (3) has a supporting protrusion (20), the moving piece (14) has a hollow hole (21), the supporting protrusion (20) passes upward through the hollow hole (21) and is supported in the middle of the temperature plate (15).

7. The temperature control switch with a protective cover according to claim 6, characterized in that: The first conductive base (1) is provided with an upwardly extending first clamping plate (22), and the moving piece (14) is provided with a second clamping plate (23) opposite to the first clamping plate (22); the two ends of the temperature plate (15) are respectively provided with a latch (24), and the latch (24) is respectively engaged with the inner side of the first clamping plate (22) and the second clamping plate (23).

8. The temperature control switch with a protective cover according to claim 7, characterized in that: The upper ends of the first card plate (22) and the second card plate (23) are provided with a bent portion (25) that bends toward the side of the temperature plate (15) to restrict the temperature plate (15) from disengaging from the snap-fit ​​position.

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