CN218525506U

CN218525506U - Heat protector facilitating heat conduction

Info

Publication number: CN218525506U
Application number: CN202222433306.9U
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 do benefit to heat conduction's hot protector, its characteristics lie in including bimetallic strip, movable contact spring, insulator, and wherein bimetallic strip, movable contact spring set gradually on the top surface of insulator, set up the vertical heat conduction hole that runs through on the movable contact spring to make the heat conduction hole be located bimetallic strip directly over. The utility model discloses in, be favorable to the heat conduction hole of heat direct conduction to bimetallic strip on the movable contact spring to the action that can avoid the bimetallic strip delays, and then can guarantee that the heat protector in time plays the thermal protection effect, and it has simple structure, easily makes, the reliability is high, the security is good, the suitability is strong etc. advantage.

Description

Heat protector facilitating heat conduction

Technical Field

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

Background

At present, a plurality of heat protectors applied to electric hair dryers and warm air blowers adopt a structure that a bimetallic strip pushes a movable contact spring to act. In order to facilitate the bimetallic strip to push the movable contact strip to act, the bimetallic strip and the movable contact strip are mostly arranged on the insulating seat in sequence. The movable contact spring is shielded outside the bimetallic strip, and the movable contact spring can block heat from being directly conducted to the bimetallic strip, so that the situation that the action of the bimetallic strip is delayed is easy to occur, and the thermal protector cannot timely play a thermal protection role, and the use safety of the electric hair drier and the fan heater is greatly 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 the above-mentioned problem and not enough, provide a do benefit to heat conduction's hot protector, among this hot protector, be favorable to the heat conduction hole of heat direct conduction to bimetallic strip on the movable contact spring to can avoid the action of bimetallic strip to prolong the back, and then can guarantee that hot protector in time plays the thermal protection effect, it has simple structure, easily makes, the reliability is high, the security is good, the suitability is strong advantage such as.

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

a heat protector beneficial to heat conduction is characterized by comprising a bimetallic strip, a movable contact spring and an insulating seat, wherein the bimetallic strip and the movable contact spring are sequentially arranged on the top surface of the insulating seat, and the movable contact spring is provided with a heat conduction hole which vertically penetrates through the movable contact spring and is positioned right above the bimetallic strip.

Preferably, the top surface of the insulating base is provided with a plurality of pressure-resistant convex parts, each pressure-resistant convex part is arranged around the movable contact piece, and the top surface of each pressure-resistant convex part is higher than the top surface of the movable contact piece.

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 pressure-resistant convex parts are respectively arranged at two sides of the fixed end of the movable contact piece, and the other two pressure-resistant convex parts respectively cover two corners of the movable end of the movable contact piece.

Preferably, the thermal protector further comprises a movable contact and a first rivet, the first rivet penetrates through the movable contact piece and the end part of the bimetallic strip in sequence 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 connecting terminal is arranged on the bottom surface of the insulating base, and the first rivet is riveted on the first connecting 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 heat conduction holes are rectangular holes, kidney-shaped holes, elliptical holes or circular holes.

The utility model has the advantages that: the thermal protector adopts a structure that a bimetallic strip is arranged inside and a movable contact strip is arranged outside. Therefore, under the condition that other assembling structures are not additionally arranged on the bimetallic strip and the movable contact piece, the action of the bimetallic strip can be accurately and stably acted on the movable contact piece, the thermal protector not only can be favorably manufactured, but also has very high reliability.

The movable contact piece is provided with a heat conduction hole which vertically penetrates through the movable contact piece, and the heat conduction hole is positioned right above the bimetallic strip. The movable contact spring can reduce the influence of direct heat conduction to the bimetallic strip by the movable contact spring, and the direct heat conduction to the bimetallic strip can be facilitated, so that the action delay of the bimetallic strip can be avoided, the thermal protector can be guaranteed to play a thermal protection role in time, and the use safety of related electric appliances (electric hair dryers and fan heaters) can be greatly improved.

Meanwhile, the integral structure of the thermal protector is simpler, so that the thermal protector can be conveniently manufactured, and has the advantages of simple structure, easiness in manufacturing, high reliability, good safety, strong applicability and the like.

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 the directional indicators in the embodiments of the present invention, such as top, bottom, left, right, front and back, 8230, are only used to explain the relative position between 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 3, a do benefit to heat protector of heat conduction, including bimetallic strip 1, movable contact spring 2, insulator 3, wherein bimetallic strip 1, movable contact spring 2 set gradually on the top surface of insulator 3, set up the heat conduction hole 21 of vertical running through on the movable contact spring 2 to make heat conduction hole 21 be located bimetallic strip 1 directly over.

The thermal protector adopts a structure that a bimetallic strip 1 is arranged inside and a movable contact strip 2 is arranged outside. Therefore, under the condition that other assembling structures are not additionally arranged on the bimetallic strip 1 and the movable contact strip 2, the action of the bimetallic strip 1 can be accurately and stably acted on the movable contact strip 2, the thermal protector not only can be favorably manufactured, but also has very high reliability.

A heat conduction hole 21 which vertically penetrates through the movable contact piece 2 is formed, and the heat conduction hole 21 is positioned right above the bimetallic strip 1. Therefore, the influence of the movable contact spring 2 on the direct conduction of heat to the bimetallic strip 1 can be reduced, the direct conduction of heat to the bimetallic strip 1 can be facilitated, the action delay of the bimetallic strip 1 can be avoided, the thermal protector can be ensured to play a thermal protection role in time, and the use safety of the electric hair drier and the fan heater of related electric appliances can be greatly improved.

As shown in fig. 1, the heat conduction hole 21 is located right above the bent portion of the bimetal 1. Therefore, the bimetallic strip 1 can be directly heated and bent, thermal protection can be rapidly realized, and the thermal protector is very high in reliability.

As shown in fig. 1 to 3, a plurality of pressure-proof protrusions 31 are provided on the top surface of the insulating base 3, and each pressure-proof protrusion 31 is disposed around the movable contact 2, and the top surface of each pressure-proof protrusion 31 is higher than the top surface of the movable contact 2. By providing a plurality of the crush reliefs 31 and arranging the crush reliefs 31 around the movable contact 2. The probability of pressing and colliding the movable contact spring 2 and the bimetallic strip 1 can be greatly reduced, and the anti-pressing and anti-breaking functions are very good. Therefore, in the moving, transporting and assembling processes, the movable contact spring 2 and the bimetallic strip 1 are not easy to press or collide, the probability of deformation of the movable contact spring 2 and the bimetallic strip 1 can be greatly reduced, the temperature control precision of the thermal protector can be ensured to be very accurate, and the use safety of the electric hair drier and the air heater of the related electric appliances can be very effectively ensured. By adopting the plurality of anti-compression convex parts 31, 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 on bimetallic strip 1 all around 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 anti-pressure convex parts 31, a cover or a box body is not needed 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 relief 31 is formed integrally with the insulator base 3. This not only facilitates manufacture, but also ensures compressive strength, thereby contributing to further improvement in reliability of the thermal protector.

As shown in fig. 1, there are four crush-resistant protrusions 31, and four crush-resistant protrusions 31 are respectively located on four corners of the top surface of the insulator base 3. The processing difficulty and the processing cost can be better controlled, the thermal protector can be ensured to have very good compression resistance and anti-breaking functions, and the applicability of the thermal protector can be further improved.

As shown in fig. 1, two of the pressure-proof protrusions 31 are respectively disposed at two sides of the fixed end of the movable contact piece 2, and the other two pressure-proof protrusions 31 are respectively shielded at two corners of the movable end of the movable contact piece 2. Therefore, the thermal protector can play a very good limiting and shielding role, can ensure that the movable contact spring 2 and the bimetallic strip 1 are very stable and reliable in installation and positioning, and can play a very good compression-resistant 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 thermal protector further comprises a moving contact 4 and a first rivet 5, the first rivet 5 is riveted on the insulating base 3 after sequentially passing through the moving contact 2 and the end part of the bimetallic strip 1, and the moving contact 4 is arranged on the moving end of the moving contact 2. The structure of the thermal protector is very simple and reliable, which not only can facilitate the manufacture, but also can play a very good thermal protection role.

As shown in fig. 1, the movable contact piece 2 and the left end of the bimetallic strip 1 are fixed by a first rivet 5, wherein two anti-pressure protrusions 31 are respectively arranged in front of and behind the movable contact piece 2 and the left end of the bimetallic strip 1, and the other two anti-pressure protrusions 31 are respectively shielded at the front and rear corners of the right end of the movable contact piece 2. Therefore, the movable ends of the movable contact piece 2 and the bimetallic strip 1 can be well protected, and the thermal protector can have good compression resistance and breaking prevention functions, so that the reliability and the applicability of the thermal protector can be guaranteed.

As shown in fig. 1 and fig. 2, the surfaces of the other two pressure-proof protrusions 31 facing the corner of the right end of the moving contact 2 are respectively opened with an arc-shaped slot 311, and the two corners of the right end of the moving contact 2 are respectively placed in the two arc-shaped slots 311. Therefore, the movable end of the movable contact piece 2 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 to 3, a first terminal 6 is disposed on a bottom surface of the insulating base 3, and a first rivet 5 is riveted to the first terminal 6. Therefore, the thermal protector 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 32 is formed in the bottom surface of the insulating base 3, an end portion of the first connecting terminal 6 is embedded in the first limiting groove 32, and the first rivet 5 is riveted to the first connecting terminal 6 in the first limiting groove 32. This ensures that the first connecting terminal 6 is mounted and positioned stably and reliably, which contributes to further improving the reliability of the thermal protector.

As shown in fig. 2 and 3, a through hole 33 vertically penetrating is formed in the middle of the insulating base 3. This facilitates the application of heat directly through the through-hole 33 to the bimetal 1, thereby contributing to an increase in the sensitivity of the bimetal 1 to the action and further contributing to an increase in the reliability of the thermal protector.

As shown in fig. 1 to 3, the bottom surface of the insulating base 3 is provided with a second connection terminal 7, and one end of the second connection terminal 7 is placed on the lower opening of the through hole 33. When the through-hole 33 is used for mounting the PTC block, electrical connection can be achieved using the second connection terminal 7 without additionally providing a conductor, which can save parts, materials, and processes, thereby reducing the number of assembly parts and contributing to improvement of assembly efficiency.

As shown in fig. 1 to 3, a spacer 10 is disposed on the top surface of the insulating base 3, and the end of the bimetal 1 is pressed against the spacer 10, and the first rivet 5 is inserted through the spacer 10. This serves the purpose of raising the bimetal 1 so as to provide a better space for the bimetal 1 to move, which in turn contributes to improving the reliability of the movement of the bimetal 1, which contributes to further improving the reliability of the thermal protector.

As shown in fig. 1 to 3, the gasket 10 is a conductive sheet structure, and an end of the gasket 10 is placed at an upper orifice of the through hole 33. When the PTC block is inserted into the through hole 33, not shown, the gasket 10 and the end of the second connection terminal 7 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 33 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 8 and a second rivet 9, wherein the second rivet 9 is riveted on the insulating base 3 and the second connecting terminal 7 at the same time, the fixed contact 8 is arranged on the top surface of the second rivet 9, and the movable contact 4 is pressed on the fixed contact 8. The structure is very simple and reliable, and the thermal protector can be conveniently installed and fixed, can also conveniently realize electric connection, and can ensure very reliable assembly, thereby ensuring very high reliability and applicability of the thermal protector.

As shown in fig. 1 and 2, an avoiding groove 34 is formed on the top surface of the insulating base 3, and the upper end of the second rivet 9 is disposed in the avoiding groove 34. This can reduce the height of the second rivet 9 projecting above the top surface of the insulating base 3, so that it is unnecessary to set the position of the movable contact 2 too high, and it is unnecessary to use the pressure-resistant projection 31 having too high a height, 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 35 is formed in the bottom surface of the insulating base 3, the second limiting groove 35 penetrates through the lower end of the through hole 33, the end of the second connection terminal 7 is embedded in the second limiting groove 35, and the second rivet 9 is riveted to the second connection terminal 7 in the second limiting groove 35. This ensures that the second connecting terminal 7 is mounted and positioned stably and reliably, which contributes to further improving the reliability of the thermal protector.

As shown in fig. 1 to 3, the heat conduction hole 21 is a rectangular hole, a kidney-shaped hole, an elliptical hole, or a circular hole. The hole shapes are not only beneficial to processing, but also can conduct heat, thereby ensuring that the thermal protector has very high reliability.

Claims

1. A thermal protector facilitating heat conduction is characterized in that: the novel bimetallic strip comprises a bimetallic strip (1), a movable contact spring (2) and an insulating seat (3), wherein the bimetallic strip (1) and the movable contact spring (2) are sequentially arranged on the top surface of the insulating seat (3), and the movable contact spring (2) is provided with a heat conduction hole (21) which vertically penetrates through, and the heat conduction hole (21) is positioned right above the bimetallic strip (1).

2. A thermal protector for facilitating heat transfer according to claim 1, wherein: the top surface of the insulating seat (3) is provided with a plurality of pressure-resistant convex parts (31), each pressure-resistant convex part (31) is arranged around the movable contact (2), and the top surface of each pressure-resistant convex part (31) is higher than the top surface of the movable contact (2).

3. A thermal protector for facilitating heat transfer according to claim 2, wherein: the number of the compression-resistant convex parts (31) is four, and the four compression-resistant convex parts (31) are respectively positioned on four corners of the top surface of the insulating base (3).

4. A thermal protector for facilitating heat transfer according to claim 3, wherein: two of the pressure-resistant convex parts (31) are respectively arranged at two sides of the fixed end of the movable contact piece (2), and the other two pressure-resistant convex parts (31) are respectively shielded at two corners of the movable end of the movable contact piece (2).

5. A thermal protector for facilitating heat transfer according to claim 2 or 3, wherein: the rivet is characterized by further comprising a movable contact (4) and a first rivet (5), wherein the first rivet (5) penetrates through the movable contact piece (2) and the end portion of the bimetallic strip (1) in sequence and then is riveted on the insulating seat (3), and the movable contact (4) is arranged on the movable end of the movable contact piece (2).

6. A thermal protector for facilitating heat transfer according to claim 5, wherein: a first wiring terminal (6) is arranged on the bottom surface of the insulating base (3), and a first rivet (5) is riveted on the first wiring terminal (6).

7. A thermal protector for facilitating heat transfer according to claim 6, wherein: the bottom surface of the insulating base (3) is provided with a first limiting groove (32), the end part of the first wiring terminal (6) is embedded in the first limiting groove (32), and the first rivet (5) is riveted on the first wiring terminal (6) in the first limiting groove (32).

8. A thermal protector for facilitating heat transfer according to claim 1 or 2, wherein: and a through hole (33) which vertically penetrates through the insulating base (3) is formed in the middle of the insulating base.

9. A thermal protector for facilitating heat transfer according to claim 8, wherein: and a second wiring terminal (7) is arranged on the bottom surface of the insulating base (3), and one end of the second wiring terminal (7) is placed on the lower hole opening of the through hole (33).

10. A thermal protector for facilitating heat transfer according to claim 1, wherein: the heat conduction holes (21) are rectangular holes, kidney-shaped holes, elliptical holes or circular holes.