Temperature controller with movably packaged temperature sensing sheet

Abstract

The utility model relates to the technical field of overheat protection devices, in particular to a temperature controller with a movably packaged temperature sensing sheet. Comprising a base, an action piece and a temperature sensing piece, a first terminal and a second terminal are arranged at the two ends of the base respectively, the fixed end of the action piece is fixedly connected with the first terminal, the movable end of the action piece is paired with the second terminal, and the action piece is electrically connected between the first terminal and the second terminal in a disconnectable mode; the temperature sensing sheet is arranged above the action sheet, and two ends of the temperature sensing sheet are respectively connected with the first terminal and the second end of the action sheet in a propping manner; according to the utility model, the structure is reasonable, the temperature sensing sheet is not riveted and is arranged between the first terminal and the action sheet in a top contact connection manner, the assembly is more convenient, the two ends of the temperature sensing sheet are not riveted in a curing manner, the action sheet can be driven to cut off a circuit by a smaller deformation acting force, the action sensitivity is higher, the processing is convenient, and the overall cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of overheat protection devices, in particular to a temperature controller with a movable packaged temperature sensing piece. Background Art

[0002] At present, most thermal protectors use the heat deformation of the bimetallic strip to push the moving contact piece to move, so that the moving contact is separated from the static contact to achieve the overheat protection function. The existing bimetallic strip and the moving contact piece are stacked on the top surface of the insulating seat in sequence, and at least one end of the bimetallic strip is fixed to the insulating seat together with the moving contact piece through the same rivet. After the bimetallic strip is heated, it deforms upward to push the moving contact piece to achieve the purpose of overheat power-off protection.

[0003] For example, Chinese patent CN215418016U discloses a thermal protector with double limit plates, which includes a seat, a moving contact, a bimetallic strip, a rivet, a static contact, and a moving contact, wherein two limit plates are provided at the left end of the moving contact, the moving contact and the bimetallic strip are stacked on the seat in sequence, and the two limit plates are respectively pressed on the front and rear top surfaces of the left end of the bimetallic strip, the rivet passes through the right end of the bimetallic strip and the right end of the moving contact in sequence and is then riveted to the seat, the static contact is arranged on the seat, the moving contact is arranged on the left end of the moving contact, and the moving contact is pressed on the static contact.

[0004] This installation method of fixing one end of the bimetallic strip with rivets requires a large deformation force for the bimetallic strip to cause the other end to jump and drive the moving contact piece to move when it is overheated and deformed, and the sensitivity is poor. In order to improve the sensitivity, some products set a fixed page at one end of the bimetallic strip, and subtract a part between the bimetallic strip and the fixed page to reduce the deformation resistance of the bimetallic strip, which increases the material and processing costs.

[0005] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0006] The utility model aims to provide a thermostat with a movable packaged temperature sensing piece with reasonable structure, high sensitivity and convenient assembly in view of the defects and shortcomings of the prior art.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model discloses a temperature controller with a movable packaged temperature-sensing piece, comprising a base, an action piece and the temperature-sensing piece, wherein the two ends of the base are respectively provided with a first terminal and a second terminal, the fixed end of the action piece is fixedly connected to the first terminal, the movable end of the action piece is matched with the second terminal, and the action piece constructs a disconnectable electrical connection between the first terminal and the second terminal; the temperature-sensing piece is arranged above the action piece, and the two ends of the temperature-sensing piece are respectively in contact with and connected to the first terminal and the second end of the action piece.

[0009] According to the above scheme, a first bayonet is provided between the first terminal and the fixed end of the action piece, a second bayonet is provided on the movable end of the action piece, and both ends of the temperature sensing piece are respectively connected to the first bayonet and the second bayonet.

[0010] According to the above scheme, a bending head is provided on the first terminal, and a first bayonet is formed between the bending head and the fixed end of the action piece; a reverse bending head is provided on the movable end of the action piece, and a second bayonet is formed between the reverse bending head and the action piece.

[0011] According to the above solution, both ends of the temperature sensing piece are provided with slots.

[0012] According to the above scheme, the base is provided with a boss, the action piece is provided with a notch, the temperature sensing piece is arranged between the first and second bayonet in a curved shape, and the boss passes through the notch to touch the temperature sensing piece.

[0013] According to the above scheme, the first terminal and the fixed end of the action piece are fixed to the base by a first rivet, and the second terminal is fixed to the base by a second rivet; a fixed contact is provided on the second rivet, and a moving contact is provided on the movable end of the action piece.

[0014] The beneficial effects of the utility model are as follows: the utility model has a reasonable structure, the temperature sensing piece is not riveted, and is arranged between the first terminal and the action piece in a top contact connection manner, which is more convenient to assemble, and there are no solidified rivets at both ends of the temperature sensing piece. A small deformation force can drive the action piece to cut off the circuit, the action sensitivity is higher, the processing is convenient, and the overall cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0016] Figure 2 It is a front cross-sectional structural schematic diagram of the utility model.

[0017] In the figure:

[0018] 1. Base; 2. Action piece; 3. Temperature sensing piece; 11. First terminal; 12. Second terminal; 13. Bending head; 14. Boss; 15. First rivet; 16. Second rivet; 17. Fixed contact; 21. First bayonet; 22. Second bayonet; 23. Recurved head; 24. Notch; 25. Moving contact; 31. Slot. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-2 As shown, the thermostat of a movable packaged temperature-sensing piece described in the utility model comprises a base 1, an action piece 2 and a temperature-sensing piece 3, wherein the two ends of the base 1 are respectively provided with a first terminal 11 and a second terminal 12, the fixed end of the action piece 2 is fixedly connected to the first terminal 11, the movable end of the action piece 2 is matched with the second terminal 12, and the action piece 2 constructs a disconnectable electrical connection between the first terminal 11 and the second terminal 12; the temperature-sensing piece 3 is arranged above the action piece 2, and the two ends of the temperature-sensing piece 3 are respectively contacted and connected to the first terminal 11 and the second end of the action piece 2. The first terminal 11 and the second terminal 12 can be fixed on the base 1 by injection molding, riveting, bolts, etc., the fixed end of the action piece 2 is fixedly connected to the first terminal 11, and the movable end of the action piece 2 is in contact with the second terminal 12 under normal conditions, thereby constructing a disconnectable electrical connection between the first terminal 11 and the second terminal 12. Furthermore, the temperature sensing piece 3 is a bimetallic piece, and the two ends of the temperature sensing piece 3 are respectively in contact with the first terminal 11 and the second end of the action piece 2, and the temperature sensing piece 3 also constructs a parallel path between the first terminal 11 and the second terminal. When the current between the first terminal 11 and the second terminal 12 is too large, the temperature of the temperature sensing piece 3 instantly exceeds the critical value, and the temperature sensing piece 3 is deformed and flipped, driving the active end of the action piece 2 to tilt up, thereby disconnecting the electrical connection between the first terminal 11 and the second terminal 12. Preferably, the two ends of the temperature sensing piece 3 are respectively in contact with the first terminal 11 and the second end of the action piece 2. Of course, the temperature sensing piece 3 is in a bent state under normal conditions, and the elasticity of the material of the temperature sensing piece 3 itself causes its two ends to apply an elastic force to the first terminal 11 and the second end of the action piece 2, so that the two ends of the temperature sensing piece 3 remain stable. In other words, the first terminal 11 and the second end of the action piece 2 form a limit to the two ends of the temperature sensing piece 3. Of course, the first terminal 11 and the action piece 2 respectively lock the two ends of the temperature sensing piece 3 to prevent it from falling off.

[0021] A first bayonet 21 is provided between the first terminal 11 and the fixed end of the action piece 2, a second bayonet 22 is provided on the movable end of the action piece 2, and the two ends of the temperature sensing piece 3 are respectively clamped on the first bayonet 21 and the second bayonet 22. The two ends of the temperature sensing piece 3 are buckled in the first bayonet 21 and the second bayonet 22, that is, the first terminal 11 forms a horizontal limit and a vertical lock on one end of the temperature sensing piece 3 through the first bayonet 21. Similarly, the action piece 2 forms a horizontal limit and a vertical lock on the other end of the temperature sensing piece 3 through the second bayonet 22, so that the temperature sensing piece 3 is encapsulated on the thermostat.

[0022] The first terminal 11 is provided with a bending head 13, and a first bayonet 21 is formed between the bending head 13 and the fixed end of the action piece 2; the movable end of the action piece 2 is provided with a recurved head 23, and a second bayonet 22 is formed between the recurved head 23 and the action piece 2. Both ends of the temperature sensing piece 3 are provided with a slot 31. The bending head 13 is integrally formed with the first terminal 11, and the bending head 13 adopts a bending process to form a Z-shaped structure. The fixed end of the action piece 2 is connected to the first terminal 11, and the bending head 13 is spaced apart from the action piece 2 in the vertical direction, so as to form a first bayonet 21 to match the slot 31 on the temperature sensing piece 3. Similarly, the recurved head 23 on the action piece 2 is also made by a bending process, and the recurved head 23 is spaced apart from the main part of the action piece 2 to form a first bayonet 22 to match the slot 31 on the temperature sensing piece 3. The preferred temperature sensing piece 3 of the present invention no longer adopts the existing fixing methods such as riveting, but is installed on the temperature controller by means of a snap connection, which makes assembly more convenient, uses less material, and improves sensitivity.

[0023] The base 1 is provided with a boss 14, the action piece 2 is provided with a notch 24, the temperature sensing piece 3 is arranged between the first notch 21 and the second notch 22 in a curved shape, and the boss 14 passes through the notch 24 and touches the temperature sensing piece 3. The boss 14 touches the dome of the temperature sensing piece 3, and when the temperature sensing piece 3 rises in temperature and deforms, the boss 14 can make the temperature sensing piece 3 flip faster to realize the power-off action of the action piece 2.

[0024] The fixed ends of the first terminal 11 and the action piece 2 are fixed to the base 1 through the first rivet 15, and the second terminal 12 is fixed to the base 1 through the second rivet 16; the second rivet 16 is provided with a fixed contact 17, and the movable end of the action piece 2 is provided with a movable contact 25. The first rivet 15 and the second rivet first fix the first terminal 11, the action piece 2 and the second terminal 12 to the base, and then install the temperature sensing piece 3, which is convenient to assemble and more efficient.

[0025] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A thermostat with a movable packaged temperature-sensitive sheet, comprising a base (1), an action sheet (2) and a temperature-sensitive sheet (3), characterized in that: The base (1) is provided with a first terminal (11) and a second terminal (12) at two ends thereof, the fixed end of the action piece (2) is fixedly connected to the first terminal (11), the movable end of the action piece (2) is matched with the second terminal (12), and the action piece (2) establishes a disconnectable electrical connection between the first terminal (11) and the second terminal (12); the temperature sensing piece (3) is arranged above the action piece (2), and the two ends of the temperature sensing piece (3) are respectively in contact with and connected to the first terminal (11) and the second end of the action piece (2).

2. The thermostat with movable packaged temperature sensing element according to claim 1, characterized in that: A first bayonet (21) is provided between the first terminal (11) and the fixed end of the action piece (2), a second bayonet (22) is provided on the movable end of the action piece (2), and the two ends of the temperature sensing piece (3) are respectively bayoneted to the first bayonet (21) and the second bayonet (22).

3. The thermostat with movable packaged temperature sensing element according to claim 2, characterized in that: The first terminal (11) is provided with a bending head (13), and a first bayonet (21) is formed between the bending head (13) and the fixed end of the action piece (2); the movable end of the action piece (2) is provided with a reverse bending head (23), and a second bayonet (22) is formed between the reverse bending head (23) and the action piece (2).

4. The thermostat with movable packaged temperature sensing element according to claim 3, characterized in that: Both ends of the temperature sensing piece (3) are provided with slots (31).

5. The thermostat with movable packaged temperature sensing element according to claim 2, characterized in that: The base (1) is provided with a boss (14), the action piece (2) is provided with a notch (24), the temperature sensing piece (3) is arranged in a curved shape between the first bayonet (21) and the second bayonet (22), and the boss (14) passes through the notch (24) to contact the temperature sensing piece (3).

6. The thermostat with movable packaged temperature sensing element according to claim 1, characterized in that: The first terminal (11) and the fixed end of the action piece (2) are fixed to the base (1) via a first rivet (15), and the second terminal (12) is fixed to the base (1) via a second rivet (16); a fixed contact (17) is provided on the second rivet (16), and a movable contact (25) is provided on the movable end of the action piece (2).

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