Temperature controller

Abstract

The utility model discloses a temperature controller, which can control a circuit to be in a closed or open state by shifting the position of a shifting rod, and when the temperature of the circuit is too high, a thermosensitive bimetallic strip jumps and tilts, the shifting rod automatically returns to a switch to be in the open state of the circuit. And the driving lever needs to be shifted again to a circuit closing state.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, specifically a temperature controller. Background Technology

[0002] A temperature controller is a device that uses the characteristic of a thermistor bimetallic strip to cause a sudden temperature rise when there is an abnormal current, thus disconnecting the circuit when the temperature is too high. Currently, most of these devices are installed with the circuit connected, which poses a safety hazard in actual use. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a temperature controller. This controller features a switch that controls the circuit's state. The internal circuit can be disconnected during preparation for power-on, and then reconnected as needed. Furthermore, in the event of abnormal overheating, a thermistor bimetallic strip trips, disconnecting the controller switch. After the thermistor cools and resets, the switch must be reopened to reconnect the circuit.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A temperature controller includes a housing and a top cover. A support plate is located on the outer side of the housing, and two terminals are located on the support plate for connection to external wires. The terminals are connected to two stationary contacts inside the housing. A lever is located on the outer side of the top cover, and two support rods are fixed to both ends of the lever inside the top cover. The two ends of the support rods are connected to both ends of a thermistor bimetallic strip. The two support rods are confined within two grooves on the top cover. When the lever is moved, the support rods slide within the grooves. A fixing rod is located at the center of the thermistor bimetallic strip, and the fixing rod is confined within a central slide rail on the inner side of the top cover and slides within the central slide rail. The length of the fixing rod is the same as the length of the support rods, ensuring that both ends of the thermistor bimetallic strip contact the stationary contacts. When the circuit malfunctions, both ends of the thermistor bimetallic strip lift up, breaking the circuit. With this structure, when the lever is moved to one end of the slot, both ends of the thermistor bimetallic strip are in contact with the stationary contact, and the circuit is closed. When the lever is moved to the other end of the slot, the circuit is open.

[0005] In the preferred embodiment of the above technical solution, a stop is provided on the outer surface of the upper cover, and the stop is located behind the lever when the lever is moved to the position where the circuit can be turned on. With this structure, the lever is less likely to shift when the circuit is on, thus preventing circuit failure.

[0006] In the preferred embodiment of the above technical solution, the upper cover has a groove, and a spring B is fixed within the groove. The stop block is confined within the groove and compresses the spring B within the groove. With this structure, when the lever is moved, it is not necessary to pull the lever over the stop block, which would cause unnecessary deformation of the thermistor bimetallic strip. Instead, the lever is smoothly moved by pressing the stop block, minimizing damage to the thermistor bimetallic strip.

[0007] In the preferred embodiment of the above technical solution, one side of the stop block parallel to the lever is perpendicular to the upper cover, and the other side parallel to the lever is a ramp. With this structure, the side perpendicular to the upper cover blocks the lever, fixing its position, while the ramp facilitates moving the lever from the temperature controller's open state to its closed state. Simply pushing the lever forward causes it to slide forward, pressing against the stop block, which in turn compresses the spring B downwards, eliminating the need for additional pressing of the stop block.

[0008] In the preferred embodiment of the above technical solution, the fixing rod is connected to a push-pull rod, and the tail end of the push-pull rod stretches a spring A, which is confined within the central slide rail. With this structure, in the event of a circuit malfunction, the thermistor bimetallic strip tilts up, causing the lever to rise and pass the stop block. At this time, spring A pulls the push-pull rod to automatically retract, pulling the thermistor bimetallic strip to the circuit disconnect position, thus ensuring circuit safety.

[0009] In the preferred embodiment of the above technical solution, the upper cover and the outer shell are fixed together by rivets. This structure facilitates disassembly.

[0010] In the preferred embodiment of the above technical solution, the wire connecting the terminal block and the stationary contact is disposed within the bottom interlayer of the housing. This structure avoids the safety risks associated with externally entangled wiring.

[0011] Compared with the prior art, this utility model has the following advantages: This temperature controller can control the circuit to be in a closed or open state by moving the lever, and automatically returns to the open state when the bimetallic strip of the circuit suddenly jumps up due to abnormality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of the outer shell in an embodiment of the present utility model.

[0013] Figure 2 This is a schematic diagram of the inner structure of the upper cover in an embodiment of the present utility model.

[0014] Figure 3 This is a schematic diagram of the outer structure of the upper cover in an embodiment of the present utility model.

[0015] Figure 4 This is a front view structural diagram of the top cover according to an embodiment of the present utility model.

[0016] Figure 5 This is a side view of the top cover structure according to an embodiment of the present utility model. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1 to 5 A temperature controller includes a housing 1 and a top cover 6. A support plate 3 is located on the outer side of the housing 1, with two terminals 2 for connecting to external wires. The terminals 2 are conductive to two stationary contacts 4 inside the housing. A lever 11 is located on the outer side of the top cover 6. Two support rods 7 are fixed to both ends of the lever 11 inside the top cover 6. The two ends of the support rods 7 are connected to the two ends of a thermistor bimetallic strip 5. The two support rods 7 are confined within two grooves 8 on the top cover 6. When the lever 11 is moved, the support rods 7 slide within the grooves 8. A fixing rod 15 is located at the center of the thermistor bimetallic strip 5. The fixing rod 15 is confined within a central slide rail 9 inside the top cover 6 and slides within the central slide rail 9. The length of the fixing rod 15 is the same as the length of the support rods 7, ensuring that both ends of the thermistor bimetallic strip 5 contact the stationary contacts 4. When the circuit malfunctions, both ends of the thermistor bimetallic strip 5 lift up, breaking the circuit. With this structure, when the lever 11 is moved to one end of the slot 8, both ends of the thermistor bimetallic strip 5 are in contact with the stationary contact 4, and the circuit is closed. When the lever 11 is moved to the other end of the slot 8, the circuit is open.

[0018] In this embodiment, a stop 12 is provided on the outer surface of the upper cover 6. The stop 12 is located behind the lever 11 when it is turned to the position where the circuit can be turned on. With this structure, the lever 11 is less likely to be displaced when the circuit is on, thus preventing circuit failure.

[0019] In this embodiment, the upper cover 6 is provided with a groove 14, in which a spring B13 is fixed. The stop block 12 is confined within the groove 14 and compresses the spring B13 within the groove 14. With this structure, when the lever 11 is moved, it is not necessary to pull the lever 11 over the stop block 12, which would cause unnecessary deformation of the thermistor bimetallic strip 5. Instead, the lever 11 is smoothly moved by pressing the stop block 12, reducing damage to the thermistor bimetallic strip 5.

[0020] In this embodiment, one side of the stop block 12 parallel to the lever 11 is a surface perpendicular to the top cover, and the other side parallel to the lever is a ramp. The surface perpendicular to the top cover is used to block the lever and fix its position, while the ramp facilitates moving the lever from the temperature controller disconnected state to the temperature controller closed state. Simply push the lever forward, and it slides forward, pressing the stop block. The stop block then compresses the spring B downward, eliminating the need to press the stop block separately.

[0021] In this embodiment, the fixed rod 15 is connected to a push-pull rod 16. The tail end of the push-pull rod 16 stretches a spring A10, which is confined within the central slide rail 9. With this structure, in the event of a circuit malfunction, both ends of the thermistor bimetallic strip 5 will tilt upwards, causing the lever 11 to rise and pass the stop block 12. At this time, the spring A10 pulls the push-pull rod 16 to automatically retract to the circuit disconnect position, ensuring circuit safety.

[0022] In this embodiment, the upper cover 6 is fixed to the outer shell 1 by rivets. This structure facilitates disassembly.

[0023] In this embodiment, the wire connecting the terminal 2 and the stationary contact 4 is disposed in the bottom interlayer of the outer casing 1. This structure avoids the safety risks associated with externally tangled wiring.

[0024] Compared with the prior art, this temperature controller can control the circuit to be in a closed or open state by moving the lever, and automatically returns to the open state when the bimetallic strip suddenly jumps up due to an abnormality in the circuit.

[0025] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A temperature controller characterized by: The utility model relates to a circuit breaker, including shell (1) and upper cover (6), the shell (1) outside has a support plate (3), two terminal posts (2) are formed on the support plate (3), the terminal post (2) is in lead conduction with two static contact (4) inside the shell (1), the upper cover (6) outside is equipped with the lever (11), two support rods (7) are fixed in the upper cover (6) inside the lever (11) both ends, two support rods (7) pass through the upper cover (6) on two grooves (8), two support rods (7) other end are connected with the both ends of a heat-sensitive bimetallic strip (5) respectively, the support rod (7) can slide in the groove (8), the heat-sensitive bimetallic strip (5) central position is equipped with fixed rod (15), the fixed rod (15) is limited in the central slide (9) of the upper cover (6) inside and can slide in the central slide (9).

2. A temperature controller as claimed in claim 1, characterised in that: The upper cover (6) outside surface is equipped with a stopper (12), the stopper (12) is located behind the lever (11) when the lever (11) is pushed to the position that circuit can be conducted.

3. A temperature controller as claimed in claim 2, characterised in that: The upper cover (6) is equipped with a recess (14), the recess (14) is fixed with spring B (13) in, the stopper (12) is limited in the recess (14) and compresses spring B (13) with recess (14) in.

4. A temperature controller as claimed in claim 2, characterised in that: The side of the stopper (12) parallel with the lever (11) is the vertical surface of the upper cover, and the other side parallel with the lever is the inclined surface.

5. A temperature controller as claimed in claim 1, characterized in that: The fixed rod (15) is connected with a push-pull rod (16), the push-pull rod (16) tail end stretches a spring A (10), the spring A (10) is limited in the central slide (9).

6. A temperature controller as claimed in claim 1, characterized in that: The upper cover (6) and the shell (1) are fixed by rivet.

7. A temperature controller as claimed in claim 1, characterized in that: The lead connected between the terminal post (2) and the static contact (4) is arranged in the bottom interlayer of the shell (1).

Images