CN219917018U

CN219917018U - Thermal protector

Info

Publication number: CN219917018U
Application number: CN202320386285.1U
Authority: CN
Inventors: 皮爱军; 王政敏
Original assignee: Hunan Guanjun Electronic Technology Co ltd
Current assignee: Hunan Guanjun Electronic Technology Co ltd
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-10-27
Anticipated expiration: 2033-03-03

Abstract

The present utility model provides a thermal protector comprising: the first assembly comprises a bimetallic strip, a first connector and a second connector, wherein the first connector and the second connector are respectively and electrically connected with two ends of the bimetallic strip; and a second assembly comprising a first electrode and a second electrode, the first electrode comprising a third joint; the second electrode includes a fourth joint; the second component is detachably mounted with the first component; when the second component is installed on the first component combination, the first connector is electrically connected with the third connector; the second connector is electrically connected with the fourth connector; compared with the prior art, the thermal protector can replace the double electrode sheet by replacing the first component.

Description

Thermal protector

Technical Field

The utility model relates to the field of electronic devices, in particular to a thermal protector.

Background

The thermal protector, also called micro overheat protector, is used as one common thermal protecting element for household motor and electric equipment, such as washing machine motor, air conditioner fan motor, transformer, ballast, electric heater, etc. to overheat/overcurrent protection, and has small size, great contact capacity, fast trip action, reliable performance, and is used widely in protecting circuit and other equipment.

The common thermal protector in the prior art mainly performs thermal protection through the bimetallic strip packaged in the shell, when the electrical appliance works normally, the bimetallic strip is in a free state, the contact is in a closed/open state, when the temperature rises to an action temperature value, the bimetallic element is heated to generate internal stress to act rapidly, and the contact is opened/closed to cut off/switch on a circuit, so that the thermal protection function is realized; the repeated use of the thermal protector also has the problem of bimetallic strip fatigue, namely the bimetallic strip generates irreversible deformation, thereby causing poor contact of the thermal protector and making the thermal protector incapable of realizing the functions thereof; currently, to solve the above-mentioned problems, it is generally necessary to replace the thermal protector as a whole.

Disclosure of Invention

The utility model provides a thermal protector, wherein a bimetallic strip is positioned on a first component; the electrode used for being electrically connected with the circuit is positioned on the second component, and the first component and the second component are detachably connected; when the first component and the second component are assembled, the bimetallic strip is electrically connected with the electrode to form a thermal protector, and the thermal protector is used for replacing the double electrode plates by replacing the first component.

A thermal protector, comprising:

the first assembly comprises a bimetallic strip, a first connector and a second connector, wherein the first connector and the second connector are respectively and electrically connected with two ends of the bimetallic strip; the method comprises the steps of,

a second assembly comprising a first electrode and a second electrode, the first electrode comprising a third joint; the second electrode includes a fourth joint; the second component is detachably mounted with the first component; when the second component is installed on the first component combination, the first connector is electrically connected with the third connector; the second connector is electrically connected with the fourth connector.

Optionally, the first electrode includes a first end and a second end, and the third joint is located at the first end of the first electrode.

Optionally, the second electrode includes a first end and a second end, and the fourth joint is located at the second end of the second electrode.

Optionally, the first electrode and the second electrode are insulated.

Optionally, the first component comprises a housing, the housing comprising an inner cavity, one end of the inner cavity being open; a third electrode is arranged in the inner cavity of the shell, and comprises a first end close to the opening and a second end far away from the opening; the second connector is arranged at the first end of the third electrode; the bimetal including a first end proximate the opening and a second end distal the opening; the first end of the bimetallic strip is electrically connected with the first end of the third electrode; the second end of the bimetallic strip is provided with the first connector; the second assembly is mounted to the first assembly from an open end of the first assembly.

Optionally, the second component includes a cover, the cover covers the opening of the first component, and the first electrode and the second electrode are mounted on the cover; the first electrode and the second electrode pass through the cover body; the first electrode and the second electrode each include a first end located on a side of the cover facing the opening of the housing; the third joint is arranged at the first end of the first electrode; the fourth joint is arranged at the first end of the second electrode.

Optionally, the cover body is an insulator, and the cover body is provided with two first mounting holes; the first electrode and the second electrode respectively pass through the two first mounting holes.

Optionally, a waterproof ring is arranged on the contact surface of the cover body and the shell, and the waterproof ring is a soft waterproof ring.

Optionally, the inner diameter of the cover is larger than the outer diameter of the housing; the opening-leaning position of the shell is sleeved in the cover body; the outer surface of the shell is provided with an elastic buckle, and the outer surface of the shell is provided with an avoidance groove relative to the elastic buckle; the cover body is provided with an assembly hole relative to the elastic buckle; the assembly holes are communicated with the inner side surface and the outer side surface of the cover body; the surface of the elastic buckle facing the cover body is a guide inclined surface; the elastic hasp is provided with a stop surface opposite to the guide inclined surface; the elastic buckle is correspondingly clamped with the assembly hole.

Optionally, an arc surface is disposed on one side of the assembly hole on the outer surface of the housing.

Optionally, the thermal protector includes a temperature sensing member, one end of which is located outside the housing; one end of the temperature sensing piece penetrates through the shell and is connected with the third electrode.

In contrast to the prior art, the present utility model provides a thermal protector having a bimetal located in a first assembly; the electrode used for being electrically connected with the circuit is positioned on the second component, and the first component and the second component are detachably connected; when the first component and the second component are assembled, the bimetallic strip is electrically connected with the electrode to form a thermal protector, and the thermal protector is used for replacing the double electrode plates by replacing the first component.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic cross-sectional structure of the thermal protector according to the present utility model.

Fig. 2 is a partial enlarged view of fig. 1.

Fig. 3 is a schematic cross-sectional view of another embodiment of the thermal protector according to the present utility model.

Description of the drawings: 1. a cover body; 11. a fitting hole; 111. an arc surface; 12. a first mounting hole; 3. a first electrode; 31. a third joint; 4. a second electrode; 41. a fourth joint; 5. a housing; 51. an elastic buckle; 52. an avoidance groove; 53. a second mounting hole; 6. a third electrode; 61. a second joint; 62. a heat conduction head; 7. bimetallic strips; 71. a first joint; 8. and (5) a waterproof ring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements defined by the statement "include one … …" are not excluded from the package.

Referring specifically to fig. 1 and 2, fig. 1 is a schematic cross-sectional structure of the thermal protector according to the present utility model; fig. 2 is a partial enlarged view of fig. 1.

The present utility model provides a thermal protector comprising:

a first assembly including a bimetal 7, and a first connector 71 and a second connector 61 electrically connected to both ends of the bimetal 7, respectively; the method comprises the steps of,

a second assembly comprising a first electrode 3 and a second electrode 4, the first electrode 3 comprising a third joint 31; the second electrode 4 comprises a fourth joint 41; the second component is detachably mounted with the first component; when the second component is mounted on the first component, the first connector 71 is electrically connected to the third connector 31; the second connector 61 is electrically connected to the fourth connector 41.

It will be appreciated that the temperature controlled switch is connected to the circuit via the first electrode 3 and the second electrode 4.

It will be appreciated that when the first and second components are combined, the first connector 71 is electrically connected to the third connector 31; the second connector 61 is electrically connected to the fourth connector 41, the circuit including the thermal protector is in a on state, and the current sequentially passes through the first electrode 3, the third connector 31, the first connector 71, the bimetal 7, the second connector 31, the fourth connector 41 and the second electrode 4; or current flows in the opposite direction; in an overtemperature environment, due to the deformation of the bimetallic strip 7; the first terminal 71 is disconnected from the third terminal 31, otherwise the second terminal 61 is disconnected from the fourth terminal 41, and the circuit including the thermal protector is in an open state.

It will be appreciated that the first electrode 3 is insulated from the second electrode 4.

In an alternative embodiment, the first electrode 3 includes a first end and a second end, and the third joint 31 is located at the first end of the first electrode 3; or alternatively;

the second electrode 4 comprises a first end and a second end, and the fourth joint 41 is located at the second end of the second electrode 4.

In the above embodiment, the first electrode 3 and the second electrode 4 are insulated from each other.

In an alternative embodiment, the first assembly comprises a housing 5, the housing 5 comprising an inner cavity, one end of the inner cavity being open; a third electrode 6 is arranged in the inner cavity of the shell 5, and the third electrode 6 comprises a first end close to the opening and a second end far away from the opening; the second connector 61 is arranged at the first end of the third electrode 6; the bimetal 7 comprises a first end close to the opening and a second end remote from the opening; the first end of the bimetal 7 is electrically connected with the first end of the third electrode 6; the second end of the bimetal 7 is provided with the first joint 71; the second assembly is mounted to the first assembly from an open end of the first assembly.

In the above embodiment, the first connector 71 is a movable connector; when the bimetal 7 is deformed by heat, the first contact 71 is disconnected from the third contact 31 of the first electrode 3, thereby breaking the circuit.

In an alternative embodiment, the first electrode 3, the second electrode 4 and the third motor 6 may be made of an electrically conductive material.

In an alternative embodiment, the conductive material may be silver, copper, or other conductive metallic materials known in the art.

In an alternative embodiment, the second component includes a cover 1, the cover 1 covers the opening of the first component, and the first electrode 3 and the second electrode 4 are mounted on the cover 1; the first electrode 3 and the second electrode 4 pass through the cover 1; the first electrode 3 and the second electrode 4 each comprise a first end located at a side of the cover 1 facing the opening of the housing 5; the third joint 31 is arranged at the first end of the first electrode 3; the fourth connector 41 is provided at the first end of the second electrode 4.

In the above embodiment, optionally, the first electrode 3 and the second electrode 4 are disposed in parallel.

In the above embodiment, optionally, the length direction of the housing 5 extends along the first direction, and the length direction of the inner cavity extends along the first direction; the length direction of the first electrode 3 and the second electrode 4 also extends in the first direction.

In the above embodiment, optionally, the cover 1 is an insulator, and the cover 1 is provided with two first mounting holes 12; the first electrode 3 and the second electrode 4 pass through the two first mounting holes 12, respectively.

In the above embodiment, optionally, the cover 1 is provided with a first mounting hole 12 extending along the first direction; the two ends of the first mounting hole 12 are open, and the two openings of the first mounting hole 12 are respectively positioned on the inner surface and the outer surface of the cover body 1.

In an alternative embodiment, the cover 1 is sleeved at the opening position of the upper end of the housing 5.

In an alternative embodiment, a waterproof ring 8 is arranged on the contact surface of the cover body 1 and the shell 5, and the waterproof ring 8 is a soft waterproof ring 8.

It will be appreciated that when the cover 1 and the housing 5 are combined, the waterproof ring 8 is compressed to contract, thereby playing a waterproof role, preventing liquid from passing through the gap between the cover 1 and the housing 5.

In an alternative embodiment, the inner diameter of the cover 1 is larger than the outer diameter of the housing 5; the shell 5 is sleeved in the cover body 1 at the position close to the opening; the outer surface of the shell 5 is provided with an elastic buckle 51, and the outer surface of the shell 5 is provided with an avoidance groove 52 relative to the elastic buckle 51; the cover body 1 is provided with an assembly hole 11 relative to the elastic buckle 51; the assembly holes 11 are communicated with the inner side surface and the outer side surface of the cover body 1; the surface of the elastic buckle 51 facing the cover body 1 is a guide inclined surface; the elastic hasp 51 is provided with a stop surface opposite to the guide inclined surface; the elastic buckle 51 is correspondingly clamped with the assembly hole 11.

In the above embodiment, the elastic buckle 51 includes a main body having a rod-like structure, and the main body includes a first end and a second end; the main body is positioned at the opening end of the assembly hole 11; the first end of the main body is connected with the shell 5; the second end of the main body is provided with a buckle body; the buckle body comprises a guide inclined plane facing the cover body 1; the buckle body further comprises a stop surface which is arranged opposite to the guide inclined surface and is opposite to the guide inclined surface; the main body is made of elastic materials; in the process that the cover body 1 moves towards the direction of the shell body 5 and is gradually sleeved on the shell body 5, due to the action of the guide inclined surface, the elastic buckle 51 is pressed into the avoidance groove 52, when the cover body 1 slides to the un-slide state, the elastic buckle 51 rebounds to enter the assembly hole 11, at the moment, the waterproof ring 8 compresses, the waterproof ring 8 applies a first acting force to the cover body 1 to enable the cover body 1 to move towards the direction away from the shell body 5, and the blocking surface of the buckle body exists to prevent the cover body 1 from moving under the action of the first acting force, so that the cover body 1 is tightly covered at one end of the shell body 5. When the elastic buckle 51 is pressed down from the outer side of the assembly hole 11, the stop surface is removed, the cover 1 moves away from the housing 5 under the action of the first force, and the cover 1 can be removed from the housing 5.

In the above embodiment, the side of the assembly hole 11 located on the outer surface of the housing 5 is provided with the arc-shaped surface 111.

In an alternative embodiment, referring to fig. 3, the thermal protector comprises a temperature sensing member having one end located outside the housing 5; one end of the temperature sensing member is connected to the third electrode 6 through the housing 5. The temperature sensing member enables the thermal protector to sense an ambient temperature more accurately.

In an alternative embodiment, a heat conducting head 62 is mounted at one end of the temperature sensing element, which is located outside the housing 5, and both the heat conducting head 62 and the temperature sensing element are made of metal materials with high heat conductivity; one surface of the heat conducting head 62 is provided with a comb-shaped structure for increasing the heat conducting area.

The foregoing is only a specific embodiment of the utility model so that those skilled in the art may understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thermal protector comprising:

the first assembly comprises a bimetallic strip (7), and a first connector (71) and a second connector (61) which are respectively and electrically connected with two ends of the bimetallic strip (7); the method comprises the steps of,

-a second assembly comprising a first electrode (3) and a second electrode (4), the first electrode (3) comprising a third joint (31); the second electrode (4) comprises a fourth joint (41); the second component is detachably mounted with the first component; when the second component is mounted on the first component combination, the first connector (71) is electrically connected with the third connector (31); the second connector (61) is electrically connected with the fourth connector (41).

2. The thermal protector according to claim 1, wherein,

the first electrode (3) comprises a first end and a second end, and the third joint (31) is positioned at the first end of the first electrode (3); or alternatively;

the second electrode (4) comprises a first end and a second end, and the fourth joint (41) is positioned at the second end of the second electrode (4).

3. Thermal protector according to claim 1, characterized by the fact that the first electrode (3) and the second electrode (4) are insulated from each other.

4. The thermal protector according to claim 1, characterized in that the first assembly comprises a housing (5), the housing (5) comprising an inner cavity, one end of which is open; a third electrode (6) is arranged in the inner cavity of the shell (5), and the third electrode (6) comprises a first end close to the opening and a second end far away from the opening; the second connector (61) is arranged at the first end of the third electrode (6); the bimetal (7) comprises a first end close to the opening and a second end remote from the opening; the first end of the bimetallic strip (7) is electrically connected with the first end of the third electrode (6); the second end of the bimetallic strip (7) is provided with the first joint (71); the second assembly is mounted to the first assembly from an open end of the first assembly.

5. The thermal protector according to claim 4, characterized in that the second assembly comprises a cover (1), the cover (1) covering the open position of the first assembly, the first electrode (3) and the second electrode (4) being mounted to the cover (1); the first electrode (3) and the second electrode (4) pass through the cover body (1); the first electrode (3) and the second electrode (4) each comprise a first end located on a side of the cover (1) facing the opening of the housing (5); the third joint (31) is arranged at the first end of the first electrode (3); the fourth connector (41) is arranged at the first end of the second electrode (4).

6. The thermal protector according to claim 5, characterized in that the cover (1) is an insulator, the cover (1) being provided with two first mounting holes (12); the first electrode (3) and the second electrode (4) respectively penetrate through the two first mounting holes (12).

7. The thermal protector according to claim 5, characterized in that the contact surface of the cover (1) and the housing (5) is provided with a waterproof ring (8), the waterproof ring (8) being a soft waterproof ring (8).

8. The thermal protector according to claim 7, characterized by the fact that the inner diameter of the cover (1) is greater than the outer diameter of the housing (5); the opening-leaning position of the shell (5) is sleeved in the cover body (1); an elastic buckle (51) is arranged on the outer surface of the shell (5), and an avoidance groove (52) is formed on the outer surface of the shell (5) opposite to the elastic buckle (51); the cover body (1) is provided with an assembly hole (11) relative to the elastic buckle (51); the assembly holes (11) are communicated with the inner side surface and the outer side surface of the cover body (1); the surface of the elastic buckle (51) facing the cover body (1) is a guide inclined surface; the elastic hasp (51) is provided with a blocking surface relative to the guide inclined surface; the elastic buckle (51) is correspondingly clamped with the assembly hole (11).

9. A thermal protector according to claim 8, characterized in that the fitting hole (11) is provided with an arcuate surface (111) on the side of the outer surface of the housing (5).

10. A thermal protector according to claim 9, characterized by comprising a temperature sensing member, one end of which is located outside the housing (5); one end of the temperature sensing element passes through the shell (5) and is connected with the third electrode (6).