CN216902674U

CN216902674U - Heat dissipation type heat protector

Info

Publication number: CN216902674U
Application number: CN202122642355.9U
Authority: CN
Inventors: 汪文瀚; 汪兆龙
Original assignee: Yangzhou Baozhu Electric Appliance Co ltd
Current assignee: Yangzhou Baozhu Electric Appliance Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-07-05
Anticipated expiration: 2031-10-29

Abstract

The utility model provides a heat dissipation type thermal protector which comprises a shell, an insulating fixed seat, a conductive bottom plate and a bimetallic strip, wherein the conductive bottom plate is fixed at the bottom of the insulating fixed seat; a groove is formed in the insulating fixed seat; one end of the bimetallic strip is fixed on the insulating fixed seat, the other end of the bimetallic strip is provided with a movable contact, the bimetallic strip is close to the movable contact, the movable contact is arranged in a groove of the fixed seat, the conductive bottom plate is provided with a static contact matched with the movable contact, and the insulating fixed seat, the conductive bottom plate and the bimetallic strip are arranged in the shell; the groove is provided with a notch at the position of at least one side of the bimetallic strip. The heat dissipation type thermal protector provided by the utility model reduces the use materials of the fixing seat, greatly reduces the temperature difference between the inside and the outside of the thermal protector, and can meet the requirements of people.

Description

Heat dissipation type heat protector

Technical Field

The utility model relates to the technical field of temperature control devices, in particular to a heat dissipation type thermal protector.

Background

The thermal protector is a common electrical element, the safety of a circuit can be directly influenced by the performance of the thermal protector, the existing thermal protector is characterized in that a bimetallic strip is arranged at a position close to a movable contact and the movable contact is arranged in a groove of a fixed seat, and the fixed seat is insulated and has poor heat conduction performance, so that the difference between the internal temperature and the external temperature of the thermal protector is large, and the requirements of people cannot be met.

Disclosure of Invention

The present invention provides a heat dissipation type thermal protector to solve the above technical problems.

The technical scheme of the application is as follows:

a heat dissipation type thermal protector comprises a shell, an insulating fixed seat, a conductive bottom plate and a bimetallic strip, wherein the conductive bottom plate is fixed at the bottom of the insulating fixed seat; a groove is formed in the insulating fixed seat; one end of the bimetallic strip is fixed on the insulating fixed seat, the other end of the bimetallic strip is provided with a movable contact, the bimetallic strip is close to the movable contact, the movable contact is arranged in a groove of the fixed seat, the conductive bottom plate is provided with a fixed contact matched with the movable contact, and the insulating fixed seat, the conductive bottom plate and the bimetallic strip are arranged in the shell; the groove is provided with a notch at the position of at least one side of the bimetallic strip.

Preferably, a conductive cover plate is arranged at the top end of the insulating fixed seat, bends are arranged at two ends of the conductive cover plate, and the cover plate is clamped on the insulating fixed seat through the bends at the two ends; a convex hull is arranged at the position, corresponding to the fixing position of the bimetallic strip, of the conductive cover plate, a concave part is arranged at the position, corresponding to the convex hull, of the insulating fixing seat, and the fixing position of the bimetallic strip is abutted to the concave part by the convex hull; one end, far away from the convex hull, of the cover plate is connected with a first lead, a second lead is connected to the bottom plate, and the first lead and the second lead extend out of the shell.

Preferably, the housing comprises a housing body with an opening at one end and an epoxy sealing body, and the epoxy sealing body seals the opening of the housing; the first lead and the second lead are exposed out of the shell through the epoxy sealing body.

Preferably, the groove is provided with notches on both sides of the bimetal.

Preferably, the thickness of the position of the shell corresponding to the notch is smaller than the thickness of the rest positions of the shell.

Preferably, a hole is arranged on the shell at a position corresponding to the notch.

Preferably, the housing is provided with a U-shaped shielding piece, an opening of the U-shaped shielding piece is arranged downward, a top surface of the U-shaped shielding piece is located above the housing, and a weak part is arranged on the top surface; the two ends of the U-shaped shielding piece are positioned below the hole and connected with the shell, so that the two sides of the U-shaped shielding piece partially cover the residence hole.

Preferably, the weak portion is a strip-shaped hole parallel to the bimetal.

When the heat dissipation type thermal protector provided by the utility model is used, due to the fact that the notches are formed in the two sides of the groove, the used materials of the fixing seat are reduced, heat generated by the bimetallic strip when the bimetallic strip works can be better dissipated to the outside, the temperature difference between the inside and the outside of the thermal protector is greatly reduced, and the requirements of people can be met.

Drawings

Fig. 1 is a schematic view of an internal structure of a heat dissipation type thermal protector provided by the present invention;

FIG. 2 is a side view of the insulative retainer of FIG. 1;

FIG. 3 is a top view of the insulative mounting block of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the housing body provided with the U-shaped shield;

FIG. 5 is a schematic view of the mounting structure of the U-shaped shielding plate;

in the figure: the device comprises a shell body 1, an insulating fixed seat 2, a groove 2-1, a notch 2-2, a concave part 2-3, a conductive bottom plate 3, a bimetallic strip 4, a movable contact 5, a fixed contact 6, a conductive cover plate 8, a convex hull 9, a second lead 10, an epoxy seal body 11, a hole 12, a U-shaped shielding piece 13 and a strip-shaped hole 13-1.

Detailed Description

The utility model is further illustrated by the following figures and examples.

Embodiment 1, the present invention provides a heat dissipation type thermal protector, which is shown in fig. 1 to 3, and includes a housing, an insulating holder 2, a conductive base plate 3, and a bimetal 4, wherein the conductive base plate is fixed to the bottom of the insulating holder; a groove 2-1 is formed in the insulating fixed seat; one end of the bimetallic strip is fixed on the insulating fixed seat, the other end of the bimetallic strip is provided with a movable contact 5, the bimetallic strip is close to the movable contact, the movable contact is arranged in a groove of the fixed seat, the conductive bottom plate is provided with a fixed contact 6 matched with the movable contact, and the insulating fixed seat, the conductive bottom plate and the bimetallic strip are arranged in the shell; notches 2-2 are arranged at the positions of the two sides of the bimetallic strip of the groove, and during actual manufacturing, the size and the shape of the notches are the same as those of the side faces of the groove.

Foretell heat dissipation formula heat protector is when using, because the both sides of recess are provided with the breach, have reduced the use material of fixing base to make the heat that bimetallic strip during operation self produced can be better distribute to the outside, reduced the inside and outside temperature gap of heat protector greatly, more can satisfy people's requirement.

The following are the advantages of the heat dissipation type thermal protector in this embodiment:

1. the size is small, and the device is suitable for wider industries of intelligent household appliances and medical instruments;

2. two notches are arranged in the protector, so that heat generated by the bimetallic strip when the bimetallic strip works can be rapidly radiated outwards, the thermal protector can more accurately sense the temperature of equipment, the protection effect is achieved, and the safety of the equipment is ensured;

3. due to the characteristic of accurate induction, the application of the product in the medium and low temperature field is expanded;

as a preferred embodiment, referring to fig. 1, a conductive cover plate 8 is disposed at the top end of the insulating fixing seat, bends 8-1 are disposed at two ends of the conductive cover plate, and the cover plate is clamped on the insulating fixing seat through the bends at the two ends; a convex hull 9 is arranged at the position, corresponding to the fixing position of the bimetallic strip, of the conductive cover plate, and a concave part 2-3 is arranged at the position, corresponding to the convex hull, of the insulating fixing seat, wherein the concave part can be arranged in a groove or concave surface mode; one end, far away from the convex hull, of the cover plate is connected with a first lead, the bottom plate is connected with a second lead 10, and the first lead and the second lead extend out of the shell. In this embodiment, the apron had both played electrically conductive effect, was used for fixed bimetallic strip again to square protection to the bimetallic strip part on bimetallic strip, reduced the damage to bimetallic strip when the installation operation, the qualification rate can improve greatly, combines the radiating effect of breach, and life obtains very big promotion.

In this embodiment, the housing includes a housing body 1 with an opening at one end and an epoxy sealing body 11, the opening of the housing is sealed by the epoxy sealing body, and the first lead and the second lead both pass through the epoxy sealing body and are exposed outside the housing. When the double-metal-sheet-type electric connector is manufactured, the insulating fixing seat and the conductive bottom plate are manufactured into a whole, the double metal sheets are clamped on the insulating fixing seat by using the conductive cover plate according to the drawing of fig. 1 to form an inner core, the inner core is inserted into the outer shell along an opening on the outer shell body after the first lead and the second lead are connected, the first lead and the second lead are exposed out of the outer shell and sealed by using epoxy sealant, and the epoxy sealant is solidified to form an epoxy sealing body;

it should be noted that, when actually making, one side of recess sets up the breach and also can play the use material that reduces the fixing base to make the purpose that the heat that bimetallic strip self produced can be better distributes to the outside, it has the difference only to set up the mode effect of breach in relative both sides, especially for cooperating the breach heat dissipation, can correspond on the shell body sometimes the position of breach sets up when porose 12, both sides set up the mode of breach and can make the inside air current that forms of recess, and the effect is obviously better.

Certainly, in actual use, because nearby components need to be glued, in order to prevent the glue from entering along the hole and the notch to stick the bimetallic strip during gluing, the shell can only be arranged to be sealed, and in this case, the thickness of the position of the shell corresponding to the notch can be smaller than the thickness of the rest positions of the shell.

Embodiment 2, embodiment 2 is a further improvement on embodiment 1, and the purpose is to make the thermal protector suitable for use in the situation of gluing production nearby, and ensure that it can both use holes to conveniently dissipate heat and prevent glue from entering into the housing along the holes, specifically, referring to fig. 4 and 5, the housing is provided with a U-shaped shielding plate 13, the opening of the U-shaped shielding plate is arranged downwards, the top surface of the U-shaped shielding plate is positioned above the housing, and the top surface is provided with a weak part, wherein the weak part can be arranged in the existing manner, such as arranged as a fold, in the present embodiment, the weak part is a strip-shaped hole 13-1 parallel to the bimetallic strip; the two ends of the U-shaped shielding piece are located below the holes and connected with the shell, the two sides of the U-shaped shielding piece can cover the residence holes in a general epoxy adhesive bonding mode, when the structure is used for gluing nearby, the holes on the two sides are covered by the U-shaped shielding piece to prevent the glue from entering the holes, after the gluing operation is completed, the U-shaped shielding piece is divided into two parts by damaging the weak portions, the two parts are pulled to the two sides, and the holes are exposed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and the terms first, second, etc. are used for distinguishing between similar terms and not for limiting the same to technical terms, and various modifications and variations of the present invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation type thermal protector comprises a shell, an insulating fixed seat (2), a conductive bottom plate (3) and a bimetallic strip (4), wherein the conductive bottom plate is fixed at the bottom of the insulating fixed seat; a groove (2-1) is arranged on the insulating fixed seat;

one end of the bimetallic strip is fixed on the insulating fixed seat, the other end of the bimetallic strip is provided with a movable contact (5), the bimetallic strip is close to the movable contact, the movable contact is arranged in a groove of the fixed seat, the conductive bottom plate is provided with a fixed contact (6) matched with the movable contact, and the insulating fixed seat, the conductive bottom plate and the bimetallic strip are arranged in the shell; it is characterized in that the preparation method is characterized in that,

and notches (2-2) are formed in the positions, on at least one side of the bimetallic strip, of the grooves.

2. The heat dissipation type thermal protector according to claim 1, wherein a conductive cover plate (8) is arranged at the top end of the insulating fixed seat, two ends of the conductive cover plate are provided with bends (8-1), and the cover plate is clamped on the insulating fixed seat through the bends at the two ends;

a convex hull (9) is arranged at the position, corresponding to the fixing position of the bimetallic strip, of the conductive cover plate, a concave part (2-3) is arranged at the position, corresponding to the convex hull, of the insulating fixing seat, and the fixing position of the bimetallic strip is abutted to the concave part by the convex hull;

one end, far away from the convex hull, of the cover plate is connected with a first lead, the bottom plate is connected with a second lead (10), and the first lead and the second lead extend out of the shell.

3. The thermal protector according to claim 2, wherein the housing comprises a housing body (1) open at one end and an epoxy seal (11) that seals the opening of the housing;

the first lead and the second lead are exposed out of the shell through the epoxy sealing body.

4. The thermal protector according to claim 1, wherein the recess is notched on both sides of the bimetal.

5. A heat dissipating thermal protector according to any one of claims 1-4 wherein the thickness of the housing at the location corresponding to the gap is less than the thickness of the housing at the rest of the housing.

6. A protector as claimed in claim 4, characterised in that holes (12) are provided in the casing at positions corresponding to the indentations.

7. The protector according to claim 6, wherein a U-shaped shielding plate (13) is provided on the housing, an opening of the U-shaped shielding plate is disposed downward, a top surface of the U-shaped shielding plate is located above the housing, and a weak portion is provided on the top surface;

the two ends of the U-shaped shielding piece are positioned below the hole and connected with the shell, so that the two sides of the U-shaped shielding piece partially cover the residence hole.

8. A heat dissipating thermal protector according to claim 7 wherein the weakened portion is a strip-shaped hole (13-1) parallel to the bimetal.