CN218525505U

CN218525505U - Thermal protector with compression resistance function

Info

Publication number: CN218525505U
Application number: CN202222433309.2U
Authority: CN
Inventors: 梁安明
Original assignee: Foshan Eagle Technology Co ltd
Current assignee: Foshan Eagle Technology Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-02-24
Anticipated expiration: 2032-09-14

Abstract

The utility model relates to a thermal protector with resistance to compression function, its characteristics lie in including insulating seat, movable contact subassembly, and wherein the movable contact subassembly sets up on the top surface of insulating seat, be provided with a plurality of resistance to compression convex parts on the top surface of insulating seat to make each resistance to compression convex part surround the movable contact subassembly and arrange. The utility model discloses on be provided with a plurality of resistance to compression convex parts around the movable contact subassembly respectively, this can play the resistance to compression, prevent breaking off with the fingers and thumb the effect to the probability that the deformation appears in the movable contact subassembly that can significantly reduce, and then can guarantee that temperature control precision is very accurate, and it can guarantee the security that relevant electrical apparatus used very effectively.

Description

Thermal protector with compression resistance function

Technical Field

The utility model relates to a hairdryer and warm braw machine field, especially a heat protector.

Background

Chinese patent application No. CN201420640371.1 discloses a technical scheme named as "a thermal protector", which includes the following technical features: insulating base, metal mounting, movable contact, stationary contact, bimetallic strip. In the thermal protector, the moving contact piece and the bimetallic strip are arranged outside the insulating base in a protruding mode, no shielding structure is arranged around the moving contact piece and the bimetallic strip, and only the end portions of the moving contact piece and the bimetallic strip are provided with limiting structures. Therefore, in the moving, transporting and assembling processes, the movable contact piece and/or the bimetallic strip are easy to collide, the movable contact piece and/or the bimetallic strip are deformed, the temperature control precision is reduced, and the use safety of the electric hair drier and the warm air blower is easy to be influenced. Therefore, it is necessary to redesign the structure of the thermal protector.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem and not enough, provide a hot protector with resistance to compression function, be provided with a plurality of resistance to compression convex parts around the movable contact subassembly on this hot protector respectively, this can play the resistance to compression, prevent breaking off with the fingers and thumb the effect to the probability that the deformation appears in the movable contact subassembly that can significantly reduce, and then can guarantee that the accuse temperature precision is very accurate, and it can guarantee the security that relevant electrical apparatus used very effectively.

The technical scheme of the utility model is realized like this:

a thermal protector with a compression-resistant function is characterized by comprising an insulating seat and a movable contact assembly, wherein the movable contact assembly is arranged on the top surface of the insulating seat, a plurality of compression-resistant convex parts are arranged on the top surface of the insulating seat, and the compression-resistant convex parts are arranged around the movable contact assembly.

Preferably, the compression-resistant convex parts are four, and the four compression-resistant convex parts are respectively positioned on four corners of the top surface of the insulating seat.

Preferably, two of the anti-pressure convex parts are respectively arranged at two sides of the fixed end of the moving contact component, and the other two anti-pressure convex parts are respectively shielded at two corners of the movable end of the moving contact component.

Preferably, the movable contact assembly comprises a movable contact piece, a bimetallic strip, a movable contact and a first rivet, the bimetallic strip and the movable contact piece are sequentially arranged on the top surface of the insulating seat, the first rivet sequentially penetrates through the movable contact piece and the end part of the bimetallic strip and then is riveted on the insulating seat, and the movable contact is arranged on the movable end of the movable contact piece.

Preferably, a first connection terminal is arranged on the bottom surface of the insulating base, and the first rivet is riveted on the first connection terminal.

Preferably, a first limiting groove is formed in the bottom surface of the insulating base, the end portion of the first connecting terminal is embedded in the first limiting groove, and the first rivet is riveted to the first connecting terminal in the first limiting groove.

Preferably, a through hole which vertically penetrates through is formed in the middle of the insulating base.

Preferably, a second connection terminal is arranged on the bottom surface of the insulating base, and one end of the second connection terminal is placed on the lower opening of the through hole.

Preferably, the thermal protector further comprises a fixed contact and a second rivet, the second rivet is riveted on the insulating base and the second connecting terminal at the same time, the fixed contact is arranged on the top surface of the second rivet, and the movable end of the movable contact component presses on the fixed contact.

Preferably, the top surface of the insulating seat is provided with a yielding groove, and the upper end part of the second rivet is arranged in the yielding groove.

The utility model has the advantages that: in the thermal protector, a plurality of pressure-resistant convex parts are arranged, and each pressure-resistant convex part is arranged around the movable contact assembly. The probability of pressing and colliding the movable contact assembly can be greatly reduced, and the anti-pressing and anti-breaking device has very good anti-pressing and anti-breaking functions. Therefore, the movable contact component is not easy to press or collide in the moving, transporting and assembling processes, the probability of deformation of the movable contact component can be greatly reduced, the temperature control precision of the thermal protector can be ensured to be very accurate, and the use safety of related electric appliances (electric hair dryers and fan heaters) can be effectively ensured.

By adopting the plurality of anti-compression convex parts, the use of raw materials can be reduced under the condition of ensuring the anti-compression function, so that the manufacturing difficulty and the manufacturing cost can be better controlled. And can guarantee like this that the heat can be from direct action all around on the movable contact subassembly to can avoid hot protective action of hot protector to receive the influence, the reliability of this hot protector is very high.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the middle heat protector of the present invention.

Fig. 2 is one of the schematic diagrams of the split structure of the middle heat protector of the present invention.

Fig. 3 is a second schematic view of the split structure of the middle heat protector of the present invention.

Detailed Description

It should be noted that all directional indicators (such as top, bottom, left, right, front, back, 8230; in the embodiments of the present invention) are only used to explain the relative position of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

As shown in fig. 1 to fig. 3, the thermal protector with anti-pressure function according to the present invention comprises an insulating base 1 and a moving contact assembly 2, wherein the moving contact assembly 2 is disposed on the top surface of the insulating base 1, a plurality of anti-pressure protrusions 11 are disposed on the top surface of the insulating base 1, and each anti-pressure protrusion 11 is disposed around the moving contact assembly 2.

In the thermal protector, by providing a plurality of crush lobes 11, the crush lobes 11 are arranged around the movable contact assembly 2. This can greatly reduce the probability of pressing and colliding the movable contact assembly 2, and has very good pressure-resistant and anti-breaking functions. Therefore, the movable contact component 2 is not easy to press and collide in the moving, transporting and assembling processes, the probability of deformation of the movable contact component 2 can be greatly reduced, the temperature control precision of the thermal protector can be ensured to be very accurate, and the use safety of related electric appliances (electric hair dryers and warm air blowers) can be effectively ensured.

By adopting the plurality of compression-resistant convex parts 11, the use of raw materials can be reduced under the condition of ensuring the compression-resistant function, so that the manufacturing difficulty and the manufacturing cost can be better controlled. And can guarantee like this that the heat can be from direct effect all around on the movable contact subassembly 2 to can avoid the thermal protection effect of thermal protector to receive the influence, the reliability of this thermal protector is very high.

After the heat protector is provided with the plurality of compression-resistant convex parts 11, a cover or a box body is not needed to be arranged for protection, so that the heat protector is convenient to overhaul, and the production and manufacturing cost can be reduced.

As shown in fig. 1 to 3, each crush-resistant protrusion 11 is formed integrally with the insulator base 1. This not only facilitates manufacturing, but also ensures compressive strength, thereby contributing to further improvement in reliability of the thermal protector.

As shown in fig. 1 and fig. 2, there are four crush-resistant protrusions 11, and four crush-resistant protrusions 11 are respectively located on four corners of the top surface of the insulating base 1. The processing difficulty and the processing cost can be controlled better, the thermal protector can be guaranteed to have very good compression resistance and breaking-off prevention functions, and the applicability of the thermal protector is further improved.

As shown in fig. 1, two of the anti-pressure protrusions 11 are respectively disposed at two sides of the fixed end of the moving contact assembly 2, and the other two anti-pressure protrusions 11 are respectively sheltered from two corners of the movable end of the moving contact assembly 2. Therefore, the thermal protector can play a very good limiting and shielding role, can ensure that the installation and the positioning of the movable contact component 2 are very stable and reliable, and can play a very good compression resistance and anti-breaking function, thereby being beneficial to further improving the reliability and the applicability of the thermal protector.

As shown in fig. 1 to 3, the movable contact assembly 2 includes a movable contact piece 21, a bimetal piece 22, a movable contact 23, and a first rivet 24, the bimetal piece 22 and the movable contact piece 21 are sequentially disposed on the top surface of the insulating base 1, the first rivet 24 is riveted on the insulating base 1 after sequentially passing through the movable contact piece 21 and the end portion of the bimetal piece 22, and the movable contact 23 is disposed on the movable end of the movable contact piece 21. The movable contact component 2 has a very simple and reliable structure, is convenient to manufacture and can play a very good thermal protection role.

As shown in fig. 1 and 2, the left ends of the moving contact piece 21 and the bimetal piece 22 are fixed by a first rivet 24, wherein two anti-pressure convex parts 11 are respectively arranged in front of and behind the left ends of the moving contact piece 21 and the bimetal piece 22, and the other two anti-pressure convex parts 11 are respectively shielded at the front and rear corners of the right end of the moving contact piece 21. Therefore, the movable ends of the movable contact piece 21 and the bimetallic strip 22 can be well protected, and the thermal protector can have good compression resistance and breaking-off prevention functions, so that the reliability and the applicability of the thermal protector can be ensured.

As shown in fig. 1 and 2, arc-shaped grooves 111 are respectively formed on the surfaces of the other two pressure-resisting convex parts 11 facing to the corners of the right end of the movable contact piece 21, and the two corners of the right end of the movable contact piece 21 are respectively placed in the two arc-shaped grooves 111. Therefore, the movable end of the movable contact piece 21 can be better shielded, and the pressure resistance and the breaking-off prevention performance of the thermal protector can be further improved.

As shown in fig. 1, the height of the top surface of the pressure-resisting protrusion 11 is higher than that of the movable contact piece 21. Thus, the pressure-resistant effect is very good.

As shown in fig. 1 to 3, a first terminal 3 is disposed on a bottom surface of the insulating base 1, and a first rivet 24 is riveted to the first terminal 3. Therefore, the movable contact component 2 can be conveniently and electrically connected with the outside, and the use is convenient.

As shown in fig. 1 and 3, a first limiting groove 12 is formed in the bottom surface of the insulating base 1, an end portion of the first connecting terminal 3 is embedded in the first limiting groove 12, and the first rivet 24 is riveted on the first connecting terminal 3 in the first limiting groove 12. Therefore, the first connecting terminal 3 can be stably and reliably arranged, and the reliability of the thermal protector is further improved.

As shown in fig. 2 and 3, a through hole 13 is formed in the middle of the insulating base 1 and penetrates vertically. When the bimetal strip 22 is located inside the movable contact 21, this facilitates the action of heat on the bimetal strip 22 directly through the through hole 13, thereby contributing to the improvement of the action sensitivity of the bimetal strip 22 and further contributing to the improvement of the reliability of the thermal protector.

As shown in fig. 1 to 3, a second connection terminal 4 is disposed on the bottom surface of the insulating base 1, and one end of the second connection terminal 4 is disposed on the lower opening of the through hole 13. When the through-hole 13 is used for mounting the PTC block, the second connection terminal 4 can be used to realize electrical connection without additionally providing a conductor, which can save parts, materials, and processes, thereby reducing the number of assembly parts and contributing to improvement of the assembly efficiency.

As shown in fig. 1 to 3, a spacer 10 is disposed on the top surface of the insulating base 1, and an end of the bimetal 22 presses on the spacer 10 and a first rivet 24 penetrates through the spacer 10. This serves the purpose of raising the bimetal strip 22 so as to provide a better space for the bimetal strip 22 to move, which in turn helps to improve the reliability of the action of the bimetal strip 22, which helps to further improve the reliability of the thermal protector.

As shown in fig. 1 to 3, the spacer 10 is a conductive sheet structure, and an end of the spacer 10 is disposed at an upper opening of the through hole 13. When a PTC block (not shown) is fitted into the through hole 13, the gasket 10 and the end of the second connection terminal 4 are pressed against the upper and lower surfaces of the PTC block, respectively. Thus, the PTC block can be conveniently installed and can be ensured to well play a role in protection.

As shown in fig. 2 and 3, the through hole 13 is a square hole. This can facilitate the installation of the PTC block.

As shown in fig. 1 to 3, the thermal protector further comprises a fixed contact 5 and a second rivet 6, wherein the second rivet 6 is riveted on the insulating base 1 and the second connection terminal 4 at the same time, the fixed contact 5 is arranged on the top surface of the second rivet 6, and the movable end of the movable contact assembly 2 is pressed on the fixed contact 5. Such structure is very simple reliable, and this can not only be installed fixedly by convenience, can also realize the electricity conveniently and connect to and can guarantee the equipment very reliable, thereby can guarantee that this thermal protector has very high reliability and suitability.

As shown in fig. 1, the movable contact 23 presses against the fixed contact 5. Thus, a very good thermal protection effect can be achieved.

As shown in fig. 1 and fig. 2, an avoiding groove 14 is formed in the top surface of the insulating base 1, and the upper end of the second rivet 6 is placed in the avoiding groove 14. This can reduce the height of the second rivet 6 protruding above the top surface of the insulating base 1, so that the position of the movable contact assembly 2 does not need to be set too high, and the pressure-resistant protrusion 11 with too high height does not need to be used, which can reduce the use of raw materials, thereby contributing to the reduction of the processing cost and the processing difficulty.

As shown in fig. 1 and 3, a second limiting groove 15 is formed in the bottom surface of the insulating base 1, the second limiting groove 15 penetrates through the lower end of the through hole 13, the end of the second connection terminal 4 is embedded in the second limiting groove 15, and the second rivet 6 is riveted to the second connection terminal 4 in the second limiting groove 15. This ensures that the second connecting terminal 4 is mounted and positioned stably and reliably, which contributes to further improving the reliability of the thermal protector.

Claims

1. The utility model provides a hot protector with resistance to compression function which characterized in that: the movable contact assembly comprises an insulating seat (1) and a movable contact assembly (2), wherein the movable contact assembly (2) is arranged on the top surface of the insulating seat (1), a plurality of pressure-resistant convex parts (11) are arranged on the top surface of the insulating seat (1), and the pressure-resistant convex parts (11) are arranged around the movable contact assembly (2).

2. The thermal protector with crush resistance as set forth in claim 1, wherein: the number of the compression-resistant convex parts (11) is four, and the four compression-resistant convex parts (11) are respectively positioned on four corners of the top surface of the insulating base (1).

3. The thermal protector with crush resistance as set forth in claim 2, wherein: wherein, two compression-resistant convex parts (11) are respectively arranged at two sides of the fixed end of the movable contact component (2), and the other two compression-resistant convex parts (11) are respectively shielded at two corners of the movable end of the movable contact component (2).

4. The thermal protector with crush-resistant function according to claim 1 or 2, wherein: the movable contact component (2) comprises a movable contact piece (21), a bimetallic strip (22), a movable contact (23) and a first rivet (24), the bimetallic strip (22) and the movable contact piece (21) are sequentially arranged on the top surface of the insulating seat (1), the first rivet (24) is riveted on the insulating seat (1) after sequentially penetrating through the movable contact piece (21) and the end part of the bimetallic strip (22), and the movable contact (23) is arranged on the movable end of the movable contact piece (21).

5. The thermal protector with crush resistance as recited in claim 4, wherein: the bottom surface of the insulating base (1) is provided with a first wiring terminal (3), and a first rivet (24) is riveted on the first wiring terminal (3).

6. The thermal protector with crush resistance as set forth in claim 5, wherein: the bottom surface of the insulating base (1) is provided with a first limiting groove (12), the end part of the first wiring terminal (3) is embedded in the first limiting groove (12), and the first rivet (24) is riveted on the first wiring terminal (3) in the first limiting groove (12).

7. The thermal protector with crush resistance as set forth in claim 1, wherein: and a through hole (13) which vertically penetrates through the insulating base (1) is formed in the middle of the insulating base.

8. The thermal protector with crush resistance as recited in claim 7, wherein: and a second wiring terminal (4) is arranged on the bottom surface of the insulating base (1), and one end of the second wiring terminal (4) is arranged on the lower hole opening of the through hole (13).

9. The thermal protector with crush resistant function as recited in claim 8, wherein: the novel switch is characterized by further comprising a fixed contact (5) and a second rivet (6), wherein the second rivet (6) is riveted on the insulating base (1) and the second wiring terminal (4) at the same time, the fixed contact (5) is arranged on the top face of the second rivet (6), and the movable end of the movable contact component (2) is pressed on the fixed contact (5).

10. The thermal protector with crush resistant function as recited in claim 9, wherein: the top surface of the insulating base (1) is provided with a yielding groove (14), and the upper end part of the second rivet (6) is arranged in the yielding groove (14).