Manual reset temperature sensitive controller

Abstract

The utility model discloses a manual reset temperature sensitive controller, and belongs to the technical field of over-temperature protection. Which comprises an insulating shell with one open end and the other closed end, and is characterized in that a positioning piece is arranged at the open end of the insulating shell, a bimetallic strip is arranged on the outward end face of the positioning piece, an aluminum cover is buckled on the outer side of the positioning piece to seal the whole controller and fix the outer edge of the bimetallic strip, and a push rod is arranged in the middle of the positioning piece in a penetrating mode. One end of the push rod abuts against a bimetallic strip arranged on the end face of the positioning piece, the other end of the push rod abuts against the movable contact piece, the movable contact piece comprises a connecting plate fixed to the closed end of the insulating shell and a movable plate making contact with the push rod, one end of the static contact piece is fixed in a cavity of the insulating shell, and the other end of the static contact piece directly faces the movable plate of the movable contact piece. A static contact and a movable contact which are mutually contacted or separated are respectively fixed on the opposite surfaces of the static contact piece and the movable plate; and the bimetallic strip is heated to deform to push the push rod so as to drive the movable plate to be far away from the static contact piece. The device has the advantages of simple structure, easiness in implementation, convenience in use and high safety.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of over-temperature protection, and particularly relates to a manual reset temperature-sensitive controller. BACKGROUND

[0002] In daily life, in order to protect household appliances, prevent them from being damaged due to overheating of components during use, a temperature-sensitive controller is often installed in a household appliance. With the popularity of household appliances, the temperature-sensitive controller has long been the most commonly used mechanical temperature control and electrical actuator in household appliances, especially small household appliances, such as water dispensers, water heaters, and low-power electric heaters. However, the existing temperature-sensitive controller for over-temperature protection usually adopts a metal reset rod, so that the creepage distance between two terminals is short, and it is easy to be broken down in harsh environments, resulting in device burnout.

[0003] In view of the above prior art, it is necessary to reasonably improve the structure of the existing temperature-sensitive controller. For this purpose, the applicant has made a beneficial design, and the technical scheme to be introduced below is produced in this background. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide a manual reset temperature-sensitive controller, which is simple in structure, easy to implement, convenient to use, low in cost, and high in safety.

[0005] The utility model is accomplished in the following way. A manual reset temperature-sensitive controller comprises an insulating shell, a positioning sheet, a push rod, a bimetallic sheet, an aluminum cover, a static contact sheet, and a dynamic contact sheet. One end of the insulating shell is open, and the other end is closed. The open end of the insulating shell is provided with the positioning sheet. The outward end face of the positioning sheet is provided with the bimetallic sheet. The outer side of the positioning sheet is further buckled with the aluminum cover to seal the entire controller and fix the outer edge of the bimetallic sheet. The middle part of the positioning sheet is provided with the push rod. One end of the push rod is in contact with the bimetallic sheet arranged on the end face of the positioning sheet, and the other end is in contact with the dynamic contact sheet. The dynamic contact sheet comprises a connecting plate fixed to the closed end of the insulating shell and a dynamic plate in contact with the push rod. One end of the static contact sheet is fixed in the cavity of the insulating shell, and the other end is opposite to the dynamic plate of the dynamic contact sheet. The opposite faces of the static contact sheet and the dynamic plate are respectively fixed with the static contact point and the dynamic contact point in contact or separated with each other. The bimetallic sheet is deformed by heat to push the push rod and drive the dynamic plate away from the static contact sheet.

[0006] In one specific embodiment of the utility model, the outward end face of the positioning sheet is provided with a counterbore for embedding the bimetallic sheet.

[0007] In another specific embodiment of the utility model, a reset rod is inserted into the central hole of the closed end of the insulating shell. The reset rod is in cooperation with the dynamic plate after passing through the connecting plate.

[0008] In still another specific embodiment of the utility model, the aluminum cover further comprises a brim surrounding the cap body.

[0009] In still another specific embodiment of the utility model, the aluminum cover further comprises a brim surrounding the cap body.

[0010] In still another specific embodiment of the utility model, the moving contact is a curved part in U shape.

[0011] In still another specific embodiment of the utility model, the moving contact is a curved part in U shape.

[0012] In still another specific embodiment of the utility model, the moving contact is a curved part in U shape.

[0013] The utility model has the beneficial effects that: the controller pushes the push rod to drive the moving contact to make the moving contact and the static contact disconnected, and the circuit is disconnected, so that the electric appliance is not damaged due to overheating; before restarting, the reset rod pushes the moving contact to make the moving contact and the static contact connected, and the circuit is connected, the whole controller structure is simple, easy to realize, not only convenient to use, but also low in cost, high in safety, long in service life of the electric appliance, and applicable to the requirements of industrialized amplification production. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a sectional view of the controller in one direction of the utility model;

[0015] Figure 2 It is a sectional view of the controller in another direction of the utility model.

[0016] In the drawing: 1. aluminum cover, 11. cap top, 12. cap body, 121. boss, 13. brim; 2. bimetallic strip; 3. push rod; 4. positioning sheet, 41. counterbore; 5. insulating shell, 51. outer ring step I, 52. step II; 6. static contact, 61. static contact; 7. moving contact, 71. moving contact, 72. connecting plate, 73. moving plate; 8. wiring sheet; 9. reset rod. DETAILED DESCRIPTION

[0017] The specific embodiments of the utility model will be described in detail below in combination with the drawings, but the description of the embodiments is not a limitation on the technical solutions, and any change in form but not in substance according to the concept of the utility model should be regarded as the protection scope of the utility model.

[0018] In the following description, the directional or positional concepts of up, down, left, right, front and back are all based on the positions shown in the corresponding drawings, which are only provided for the technical solutions of the utility model and simplify the description, and thus should not be understood as the special limitation on the technical solutions of the utility model.

[0019] Please refer to Figure 1 and Figure 2 The utility model relates to a kind of manual reset temperature-sensitive controller, including insulating shell 5, locating sheet 4, push rod 3, bimetallic strip 2, aluminum cover 1, static contact 6, moving contact 7, reset rod 9, the insulating shell 5 selects bakelite or plastic shell, the insulating shell 5 one end opening, the other end is closed and is equipped with multiple rivet holes.The opening end of the insulating shell 5 is equipped with locating sheet 4, the outward end face of the locating sheet 4 is equipped with the counterbore 41 for bimetallic strip 2 embedding, the outside of the locating sheet 4 is again buckled aluminum cover 1 and seals the whole controller well.Specifically, the aluminum cover 1 is hat-shaped, including cap top 11 and cap body 12, cap body 12 is equipped with the boss 121 for being inserted into insulating shell 5, when the boss 121 is inserted into the sunken outer ring step I 551 of insulating shell 5, cap top 11 presses the outer edge of bimetallic strip 2 against the counterbore 41 of locating sheet 4, and locating sheet 4 is fixed at the end of insulating shell 5, realize the sealing of the whole controller.In the embodiment, the aluminum cover 1 also includes brim 13 around cap body 12.

[0020] The locating sheet 4 is provided with a central hole, and the push rod 3 is arranged in the central hole, one end of the push rod 3 is in contact with the bimetallic strip 2 arranged on the end face of the locating sheet 4, and the other end is in contact with the moving contact 7. The moving contact 7 is a curved part and is in the shape of U, including two opposite plates, i.e., a connecting plate 72 fixedly connected with the closed end of the insulating shell 5 and a moving plate 73 in contact with the push rod 3. The connecting plate 72 is installed on the closed end of the insulating shell 5 by rivets.

[0021] One end of the static contact 6 is installed on the step II 552 in the cavity of the insulating shell 5 by rivets, the other end of the static contact 6 extending out of the step II 552 is opposite to the moving plate 73 of the moving contact 7, the opposite surfaces of the static contact 6 and the moving plate 73 are respectively fixed with the static contact 61 and the moving contact 71 in contact or separated with each other, when the static contact 61 and the moving contact 71 are in contact with each other, the circuit is connected; when they are separated from each other, the circuit is disconnected. The bimetallic strip 2 is deformed by heat to push the push rod 3, so as to drive the moving plate 73 away from the static contact 6.

[0022] The outside of the closed end of the insulating shell 5 is riveted with a pair of terminal blocks 8. A reset lever 9 is inserted into the central hole of the closed end of the insulating shell 5, which passes through the connecting plate 72 and cooperates with the moving plate 73.

[0023] Please continue to refer to Figure 1 and Figure 2 The working principle of the temperature-sensitive controller is as follows: when the temperature of the temperature-sensitive controller rises to the critical point of the jumping of the bimetallic strip 2, the bimetallic strip 2 jumps, which pushes the push rod 3, and the push rod 3 pushes the moving plate 73 of the moving contact 7 to be close to the connecting plate 72, so that the moving contact 71 on the moving plate 73 is disconnected from the static contact 61, the circuit is disconnected, and the electrical equipment stops running. When resetting, press the reset lever 9 once, the reset lever 9 pushes the moving plate 73 to be close to the static contact 6, so that the moving contact 71 on the moving plate 73 is in contact with the static contact 61, the circuit is connected, and at this time, the power supply is inserted, and the electrical equipment can be normally used.

Claims

1. A manual reset temperature sensitive controller comprising an insulating shell (5), a positioning sheet (4), a push rod (3), a bimetallic sheet (2), an aluminum cover (1), a static contact sheet (6), a dynamic contact sheet (7), the insulating shell (5) is open at one end and closed at the other end, characterized in that: The opening end of the insulating shell (5) is provided with a positioning sheet (4), the outward end face of the positioning sheet (4) is provided with a bimetallic sheet (2), the outer side of the positioning sheet (4) is buckled with an aluminum cover (1) to seal the whole controller and fix the outer edge of the bimetallic sheet (2), the middle part of the positioning sheet (4) is provided with a push rod (3), one end of the push rod (3) is in contact with the bimetallic sheet (2) arranged on the end face of the positioning sheet (4), the other end is in contact with a moving contact sheet (7), the moving contact sheet (7) comprises a connecting plate (72) fixed to the closed end of the insulating shell (5) and a moving plate (73) in contact with the push rod (3), one end of a stationary contact sheet (6) is fixed in the cavity of the insulating shell (5), the other end is opposite to the moving plate (73) of the moving contact sheet (7), the opposite faces of the stationary contact sheet (6) and the moving plate (73) are respectively fixed with a stationary contact point (61) and a moving contact point (71) in contact or separated from each other, the bimetallic sheet (2) is deformed by heat to push the push rod (3) and drive the moving plate (73) away from the stationary contact sheet (6).

2. A manual reset temperature sensitive controller according to claim 1 wherein: The outward end face of the positioning sheet (4) is provided with a counterbore (41) for embedding the bimetallic sheet (2).

3. A manual reset temperature sensitive controller according to claim 1 wherein: The center hole of the closed end of the insulating shell (5) is inserted with a reset rod (9), the reset rod (9) passes through the connecting plate (72) and cooperates with the moving plate (73).

4. A manual reset temperature sensitive control according to claim 1 wherein: The aluminum cover (1) is a cap-shaped structure, comprising a cap top (11) and a cap body (12), the inside of the cap body (12) is provided with a boss (121) clamped into the insulating shell (5), when the boss (121) is clamped into the sunken outer ring step I (51) of the insulating shell (5), the cap top (11) presses the outer edge of the bimetallic sheet (2) against the counterbore (41) of the positioning sheet (4), and the positioning sheet (4) is fixed to the end of the insulating shell (5).

5. A manual reset temperature sensitive control according to claim 4 wherein: The aluminum cover (1) further comprises a brim (13) surrounding the cap body (12).

6. A manual reset temperature sensitive control according to claim 1 wherein: The moving contact sheet (7) is a curved part, in the shape of U.

7. A manual reset temperature sensitive control according to claim 1 wherein: One end of the stationary contact sheet (6) is installed in the cavity of the insulating shell (5) through a rivet on a step II (52).

8. A manual reset temperature sensitive control according to claim 1 wherein: The closed end of the insulating shell (5) is externally installed with a pair of terminal sheets (8) through rivets.

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