Special high-sensitivity low-structure temperature controller for winding roll

Abstract

The utility model relates to a special high-sensitivity short structure temperature controller for a winding roll, which comprises a shell, terminals and a bimetallic disc, the bimetallic disc is arranged in the shell, the outer side of the shell is provided with an annular groove matched with the bimetallic disc, the two terminals are arranged on the two sides of the shell, the first ends of the terminals are positioned in the shell, and the second ends of the terminals are positioned in the shell. The first ends of the two terminals extend to the outer side of the shell, the second ends of the two terminals extend to the outer side of the shell, a composite bridging plate is arranged in the shell, the first ends of the two terminals are connected through the composite bridging plate, the composite bridging plate is connected with a reset rod, one end of the reset rod is connected with a bimetal disc, and the bimetal disc is used for resetting the reset rod after the environment temperature reaches a preset value. And the reset rod is pushed to separate the composite bridging plate from the two terminals. The kick type temperature controller is fast in temperature sensing action speed, high in reaction sensitivity and small in size, and overcomes the application defects that a traditional kick type temperature controller is slow in temperature sensing action speed, poor in sensitivity, low in safety and reliability, large in size, not easy to install and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature controllers, in particular to a high-sensitivity short-structure temperature controller special for a cable reel. Background Art

[0002] The cable reel is convenient to store, takes up little space, does not tangle the wires, and protects the power cord. The demand for cable reels in the fields of medical beauty, industrial machinery, and household appliances is becoming more and more popular. The use of cable reels involves the use of thermostats to control temperature and overheat protection. With the continuous transformation of various industries, they are becoming more and more high-end, intelligent, and high-quality, and the aesthetics, miniaturization, safety, and reliability of products are constantly improving.

[0003] The traditional snap-action thermostats currently available on the market are large in size, complex to install, and have high price costs. They also have high requirements for the installation location and cannot meet the demand for miniaturization of cable reels. Traditional snap-action thermostats have disadvantages such as "slow temperature sensing action rate and poor sensitivity". It often takes a long time for the thermostat to absorb heat before it can snap. This causes the temperature around the heating components of the equipment to be higher than the temperature required to be controlled by the thermostat, accelerating the aging of the heating electrical components and reducing their service life. In severe cases, it may even cause fire accidents. Therefore, it is necessary to design a new type of thermostat with fast temperature sensing action rate, high response sensitivity, small size and low height to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-sensitivity short-structure temperature controller specially used for a cable reel in view of the above shortcomings.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A high-sensitivity, low-structure temperature controller specially used for a cable reel, comprising a shell, a terminal and a bimetallic disc, wherein the bimetallic disc is arranged in the shell, and an annular groove cooperating with the bimetallic disc is provided on the outer side of the shell, and two terminals are arranged on both sides of the shell, and the first end of the terminal is located in the shell, and the second end extends to the outside of the shell, and a composite bridge plate is arranged in the shell, and the first ends of the two terminals are connected through the composite bridge plate, and the composite bridge plate is connected to a reset rod, and one end of the reset rod is connected to the bimetallic disc, and the bimetallic disc is used to push the reset rod to separate the composite bridge plate from the two terminals after the ambient temperature reaches a preset value.

[0007] Furthermore, a reset rod is provided in the shell, one end of which is connected to the bimetallic disc, the composite bridge plate is provided on the reset rod, and a spring is provided on the outer side of the reset rod, and the spring is used to provide an elastic force to move the composite bridge plate and the reset rod toward the bimetallic disc.

[0008] Furthermore, a silver contact is arranged at the bottom of the first end of the terminal, the composite bridge plate is arranged below the first end of the terminal, and the reset rod is arranged vertically below the bimetallic disc.

[0009] Furthermore, the composite bridge plate can slide up and down on the outside of the reset rod, a limit block is provided on the reset rod, the limit block is located above the composite bridge plate, and the two ends of the spring are respectively connected to the composite bridge plate and the inner wall of the shell.

[0010] Furthermore, the top and bottom of the shell are respectively provided with a top cover and a bottom cover, and a circular sink is opened on the top of the shell, and the bimetallic disc is arranged in the circular sink.

[0011] The bottom of the housing is provided with a mounting groove, the reset rod, the composite bridge plate and the first end of the terminal are all arranged in the mounting groove, the middle of the circular sink is provided with a guide hole, the guide hole is communicated with the mounting groove, the top end of the reset rod passes through the guide hole and is connected with the bimetallic disc.

[0012] The bottom cover is provided with a through hole, and the through hole cooperates with the reset rod.

[0013] Furthermore, a plurality of cylinders are arranged on the top of the bottom cover, a plurality of countersunk holes matching with the cylinders are opened on the bottom of the shell, and the bottom cover and the shell are fixed by an ultrasonic welding process.

[0014] Furthermore, an annular groove is provided on the top cover, and the bottom surface of the annular groove is in contact with the bimetallic disc.

[0015] Furthermore, the bottom cover is provided with a circular recessed groove cooperating with the spring.

[0016] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0017] The utility model has fast temperature sensing action speed, high reaction sensitivity and small size, which solves the application defects of traditional jump-type thermostats, such as slow temperature sensing action speed, poor sensitivity, low safety and reliability, large size, and difficult installation. It can be easily and quickly installed in the reel, and can achieve precise temperature control and overheating protection at the same time.

[0018] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 This is a cross-sectional view of the embodiment of the utility model when it is working normally;

[0021] Figure 3 This is a cross-sectional view of the embodiment of the utility model when the circuit is disconnected;

[0022] Figure 4 An exploded view of an embodiment of the utility model;

[0023] Figure 5 It is an exploded view of another angle of the embodiment of the utility model;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the housing of the utility model;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the housing of the utility model from another angle;

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the bottom cover of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Shell; 11. Top cover; 111. Annular groove; 121. Circular countersunk platform; 122. Mounting groove; 123. Guide hole; 124. Countersunk hole; 13. Bottom cover; 131. Through hole; 132. Cylinder; 133. Circular countersunk groove; 2. Terminal; 21. Silver contact; 3. Bimetallic disc; 4. Composite bridge plate; 5. Reset rod; 51. Limit block; 6. Spring. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a high-sensitivity, low-structure temperature controller specially used for a cable reel comprises a shell 1, a terminal 2 and a bimetallic disc 3, wherein the bimetallic disc 3 is arranged in the shell 1, and an annular groove 111 cooperating with the bimetallic disc 3 is provided on the outer side of the shell 1, and two terminals 2 are arranged on both sides of the shell 1, and the first end of the terminal 2 is located in the shell 1, and the second end extends to the outside of the shell 1, and a composite bridge plate 4 is arranged in the shell 1, and the first ends of the two terminals 2 are connected through the composite bridge plate 4, and the composite bridge plate 4 is connected to a reset rod 5, and one end of the reset rod 5 is connected to the bimetallic disc 3, and the bimetallic disc 3 is used to push the reset rod 5 to separate the composite bridge plate 4 from the two terminals 2 after the ambient temperature reaches a preset value.

[0032] Embodiment 1:

[0033] A reset rod 5 is arranged in the shell 1, one end of which is connected to the bimetallic disc 3, the composite bridge plate 4 is arranged on the reset rod 5, a spring 6 is arranged on the outer side of the reset rod 5, and the spring 6 is used to provide an elastic force to move the composite bridge plate 4 and the reset rod 5 toward the bimetallic disc 3. The reset rod is an integrated part of the action mechanism and the reset mechanism, realizing the dual functions of pushing and resetting.

[0034] A silver contact 21 is disposed at the bottom of the first end of the terminal 2 , the composite bridge plate 4 is disposed below the first end of the terminal 2 , and the reset rod 5 is vertically disposed below the bimetallic disc 3 .

[0035] The composite bridging plate 4 can slide up and down on the outside of the reset rod 5. A limit block 51 is provided on the reset rod 5. The limit block 51 is located above the composite bridging plate 4. Both ends of the spring 6 are respectively connected to the composite bridging plate 4 and the inner wall of the shell 1.

[0036] The top and bottom of the housing 1 are respectively provided with a top cover 11 and a bottom cover 13.

[0037] like Figure 6 and Figure 7 As shown, a circular sink 121 is provided on the top of the shell 1, and the bimetallic disc 3 is placed in the circular sink 121, which does not require support from a guide frame, thereby reducing the design size, and the bimetallic disc 3 is located between the shell 1 and the top cover 11. The bimetallic disc 3 can be elastically deformed in this space under the influence of temperature, thereby pushing the reset rod 5 downward, and a circular groove 111 is provided on the top cover 11. The bottom end of the circular groove 111 is in close contact with the bimetallic disc 3, which can quickly transfer heat and improve the temperature sensing rate;

[0038] The bottom of the housing 1 is provided with a mounting groove 122, and concave grooves are provided on both sides of the mounting groove 122. The concave groove is used to fix the first end of the terminal 2, and a supporting structure matching with the terminal 2 is provided on the top of the bottom cover 13. The terminal 2 is fixed by the concave groove and the supporting structure. A silver contact 21 is provided at the bottom of the first end of the terminal 2. The silver contact 21 is integrated with the terminal by riveting or welding technology, and can pass a large current load;

[0039] A guide hole 123 is provided in the middle of the circular sink 121, and the guide hole 123 is downwardly connected to the mounting groove 122. After the top end of the reset rod 5 passes through the guide hole 123, it contacts the bottom surface of the bimetallic disc 3.

[0040] The two silver contacts 21 are connected through the composite bridge plate 4 below, and the composite bridge plate 4 is sleeved on the outside of the reset rod 5, that is, a through hole for the reset rod 5 to pass through is opened on the composite bridge plate 4, and the shape of the through hole can be elliptical (or other shapes that limit the relative rotation of the reset bridge connection plate 4 and the reset rod 5), and a limit block 51 is provided on the reset rod 5, and the limit block 51 is located above the composite bridge plate 4, and a spring 6 is provided below the composite bridge plate 4, and the spring 6 is sleeved on the outside of the reset rod 5;

[0041] like Figure 8 As shown, the bottom cover 13 is used to close the lower surface of the mounting groove 122, and a circular recessed groove 133 is provided in the middle of the top of the bottom cover 13. The circular recessed groove 133 is used to fix the spring 6 so that the spring 6 does not tilt. A through hole 131 is provided in the middle of the circular recessed groove 133, and the bottom end of the reset rod 5 passes through the through hole 131;

[0042] Four vertical cylinders 132 are arranged on the top of the bottom cover 13, and four countersunk holes 124 cooperating with the cylinders 132 are arranged on the bottom of the shell 1. During assembly, the four cylinders 132 are respectively aligned with the corresponding countersunk holes 124, and the cylinders 132 are inserted into the countersunk holes 124, and the bottom cover 13 and the shell 1 are assembled together. The bottom cover 13 and the shell 1 are fused and fixed together by an ultrasonic welding process.

[0043] Working principle:

[0044] like Figure 2 As shown, at room temperature, the bimetallic disc 3 arches upward, and the reset rod 5 does not apply force to the spring 6. At this time, the spring 6 abuts upward under the action of its own elastic force, so that the composite bridge plate 4 abuts against the silver contact 21, and the circuit connected to the thermostat forms a closed loop and works normally.

[0045] like Figure 3As shown, when the ambient temperature of the thermostat rises to a certain temperature, the bimetallic disc 3 is deformed and twisted, and arches downward, pushing the reset rod 5 to move downward. The reset rod 5 pushes the composite bridge plate 4 to move downward through the limit block 51, so that the silver contact 21 and the composite bridge plate 4 are separated, and the spring 6 is compressed. The spring 6 accumulates elastic potential energy. At this time, the circuit connected to the thermostat is disconnected and stops working, which plays a role in temperature control.

[0046] like Figure 3 As shown, after the ambient temperature returns to normal, the bimetallic disc 3 keeps arching downward, the silver contact 21 and the composite bridge plate 4 remain separated, and after the equipment fault is eliminated, it is necessary to push the reset rod 5 (manually) to push the bimetallic disc 3 upward through the reset rod 5, and reset the spring 6, so that the composite bridge plate 4 abuts against the silver contact 21 again, and the thermostat and the electrical appliance resume normal operation.

[0047] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A high-sensitivity, low-profile thermostat for a cable reel, characterized in that: The invention comprises a shell (1), a terminal (2) and a bimetallic disc (3), wherein the bimetallic disc (3) is arranged in the shell (1), an annular groove (111) cooperating with the bimetallic disc (3) is provided on the outer side of the shell (1), the two terminals (2) are arranged on both sides of the shell (1), the first end of the terminal (2) is located in the shell (1), and the second end extends to the outside of the shell (1), a composite bridge plate (4) is provided in the shell (1), the first ends of the two terminals (2) are connected through the composite bridge plate (4), the composite bridge plate (4) is connected to the reset rod (5), one end of the reset rod (5) is connected to the bimetallic disc (3), and the bimetallic disc (3) is used to push the reset rod (5) to separate the composite bridge plate (4) from the two terminals (2) after the ambient temperature reaches a preset value.

2. The high-sensitivity, low-profile thermostat for a cable reel according to claim 1, characterized in that: A reset rod (5) is provided in the housing (1), one end of the reset rod (5) is connected to the bimetallic disc (3), the composite bridge plate (4) is provided on the reset rod (5), and a spring (6) is provided on the outer side of the reset rod (5), and the spring (6) is used to provide an elastic force to move the composite bridge plate (4) and the reset rod (5) toward the bimetallic disc (3).

3. The high-sensitivity, low-profile thermostat for a cable reel according to claim 2, characterized in that: A silver contact (21) is provided at the bottom of the first end of the terminal (2), the composite bridge plate (4) is provided below the first end of the terminal (2), and the reset rod (5) is vertically provided below the bimetallic disc (3).

4. The high-sensitivity, low-profile thermostat for a cable reel according to claim 3, characterized in that: The composite bridge plate (4) can slide up and down on the outside of the reset rod (5); a limit block (51) is provided on the reset rod (5); the limit block (51) is located above the composite bridge plate (4); and the two ends of the spring (6) are respectively connected to the composite bridge plate (4) and the inner wall of the housing (1).

5. The high-sensitivity, low-profile temperature controller for a cable reel according to any one of claims 2 to 4, characterized in that: The top and bottom of the shell (1) are respectively provided with a top cover (11) and a bottom cover (13). The top of the shell (1) is provided with a circular sink (121), and the bimetallic disc (3) is arranged in the circular sink (121). The bottom of the housing (1) is provided with a mounting groove (122), the reset rod (5), the composite bridge plate (4) and the first end of the terminal (2) are all arranged in the mounting groove (122), the middle of the circular sink (121) is provided with a guide hole (123), the guide hole (123) is communicated with the mounting groove (122), the top end of the reset rod (5) passes through the guide hole (123) and is connected to the bimetallic disc (3), A through hole (131) is provided on the bottom cover (13), and the through hole (131) cooperates with the reset rod (5).

6. The high-sensitivity, low-profile temperature controller for a cable reel according to claim 5, characterized in that: The top of the bottom cover (13) is provided with a plurality of cylinders (132), the bottom of the shell (1) is provided with a plurality of countersunk holes (124) that match the cylinders (132), and the bottom cover (13) and the shell (1) are fixed by an ultrasonic welding process.

7. The high-sensitivity, low-profile thermostat for a cable reel according to claim 5, characterized in that: An annular groove (111) is provided on the top cover (11), and the bottom surface of the annular groove (111) is in contact with the bimetallic disc (3).

8. The high-sensitivity, low-profile thermostat for a cable reel according to claim 5, characterized in that: The bottom cover (13) is provided with a circular sink groove (133) that matches the spring (6).

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