Temperature controller reed structure and temperature controller

Abstract

The utility model relates to the technical field of temperature controllers, and particularly discloses a temperature controller reed structure and a temperature controller, the temperature controller reed structure comprises a movable reed, the movable reed comprises a main reed and an energy storage reed, one end of the main reed is provided with a movable contact in a penetrating mode, the main reed is provided with a containing hole, and one end, close to the movable contact, of the energy storage reed is fixedly connected with the inner wall of the containing hole; the reed seat comprises a connecting part, an abutting part fixedly connected to one end of the connecting part and a fixing plate fixedly connected to one end, far away from the abutting part, of the connecting part, the fixing plate is used for abutting the energy storage reed, one end, far away from the movable contact, of the main reed is fixedly connected with the abutting part, and the bottom wall of the main reed is attached to the abutting part. The temperature controller comprises an upper shell, a base, a static contact piece set and the temperature controller reed structure, an adjusting shaft is arranged on the top wall of the upper shell in a penetrating mode, the end, close to the base, of the adjusting shaft is fixedly connected with a diaphragm capsule, and the bottom of the diaphragm capsule is fixedly connected with an ejector rod. The temperature controller reed structure and the temperature controller have the effect of improving the temperature control precision.

Description

Technical Field

[0001] The present application relates to the field of thermostat technology, and in particular to a thermostat reed structure and a thermostat. Background Art

[0002] A thermostat is a series of automatic control components that physically deform inside the switch according to the temperature changes in the working environment, thereby producing certain special effects and causing conduction or disconnection actions.

[0003] The Chinese patent with announcement number CN211125494U discloses a new type of liquid expansion mechanical thermostat, including an electrical seat, a thermostat body, a power piece and a stainless steel pressing piece. The electrical seat is composed of a base, a pin, a reed seat, a moving contact piece and a static contact piece. The moving contact piece is equipped with a moving contact, the static contact piece is equipped with a static contact, and the moving contact piece and the static contact piece are equipped with an insulating plate. The thermostat body includes an adjusting shaft, a plastic frame and a fixed bracket. The fixed bracket is provided with a rotating hole, and the rotatable rod of the adjusting shaft is installed inside the rotating hole. A limit plate is installed on the outer upper side of the adjusting shaft. The plastic frame is fixedly installed on the inner side of the fixed bracket. The power piece includes a temperature sensing tube, a sheath tube, a capillary tube, a membrane box and a push rod. The temperature sensing tube is connected to one end of the capillary tube by welding.

[0004] In order to facilitate assembly, a mounting hole is generally opened on the moving contact piece, and then a positioning groove is opened on the side wall of the spring seat, and the inner wall of the positioning groove is fitted with the inner wall of the mounting hole.

[0005] However, there are the following technical defects: the contact surface between the moving contact piece and the reed seat is close to the middle of the moving contact piece, so that the fulcrum appears in the middle of the moving contact piece. When the push rod is pressed down, both ends of the moving reed piece will undergo elastic deformation. The push rod needs to be pressed down to a greater depth to move the end of the moving reed piece with the moving contact point. In this process, the temperature control will have a lag, which will reduce the accuracy of the temperature controller. Utility Model Content

[0006] In order to improve temperature control accuracy, the present application provides a thermostat reed structure and a thermostat.

[0007] In the first aspect, the present application provides a thermostat reed structure adopting the following technical solution:

[0008] A thermostat reed structure, comprising:

[0009] A dynamic spring, comprising a main spring and an energy storage spring, wherein one end of the main spring is provided with a dynamic contact, the main spring is provided with a receiving hole, and the end of the energy storage spring close to the dynamic contact is fixedly connected to the inner wall of the receiving hole;

[0010] The reed seat includes a connecting portion, an abutting portion fixedly connected to one end of the connecting portion, and a fixed plate fixedly connected to the end of the connecting portion away from the abutting portion. The fixed plate is used for abutting the energy storage reed. The end of the main reed away from the moving contact is fixedly connected to the abutting portion, and the bottom wall of the main reed is in contact with the abutting portion.

[0011] By adopting the above technical solution, the end of the movable spring with the movable contact is more likely to swing. When the movable spring is pressed, both sides of the pressing point tend to push upward. Because the end of the movable spring near the abutment portion is fixed by the spring seat, a fulcrum is formed, and the end of the movable spring with the movable contact becomes a free end. When pressed, the displacement of the movable contact end is amplified, making it easier for the end of the movable spring with the movable contact to move, thereby improving the response speed of the system.

[0012] The energy storage spring sets a threshold for the downward pressure of the moving spring. Only when the pressure reaches the threshold can the moving contact be pressed down, improving stability during use. The energy storage spring is bent and compressed, effectively storing elastic force. When the pressure reaches the threshold, the stored energy in the energy storage spring is rapidly released to provide a boost, improving response speed, helping the moving contact to move quickly, and thus quickly switching the circuit.

[0013] Optionally, the fixing plate is provided with a fixing groove for engaging one end of the energy storage spring.

[0014] By adopting the above technical solution, one end of the energy storage spring can be stably inserted into the fixed groove, so that one end of the energy storage spring can always abut against the fixed plate. The energy storage spring will not fail to store elastic force due to falling out of the fixed plate, thereby ensuring stability of use.

[0015] Optionally, a groove is formed on a side of the energy storage spring close to the fixing plate.

[0016] By adopting the above technical solution, the groove can effectively disperse the stress, so that cracks are not easily generated when the energy storage spring abuts against the fixing groove, thereby improving the service life of the energy storage spring.

[0017] Optionally, one end of the main spring away from the moving contact is riveted to the abutment portion.

[0018] By adopting this technical solution, riveting firmly secures one end of the dynamic spring to the abutment plate. This fixation allows the other end of the dynamic spring to swing more easily when pressure is applied, achieving a quick response. The riveting creates a uniform compressive stress field between the dynamic spring and the abutment, effectively reducing edge stress concentration and improving durability.

[0019] Optionally, the main spring is provided with a bent portion, the bent portion is located on a side of the energy storage spring close to the abutting portion, and the bent portion protrudes toward a side away from the spring seat.

[0020] By adopting the above technical solution, the raised bent portion enables the pressing structure in the temperature controller to better press the dynamic spring and effectively guide the pressing direction, thereby improving the response sensitivity and reliability of the dynamic spring and achieving precise force transmission and mechanical control.

[0021] Optionally, the main spring is provided with a through hole, and the through hole is arranged on a side of the bent portion away from the energy storage spring.

[0022] By adopting the above technical solution, the through hole can reduce the rigidity of the dynamic spring, thereby achieving a more flexible elastic response, effectively realizing the transmission of force, making it easier for one end of the dynamic contact to swing, and improving the response speed.

[0023] Optionally, a space for the main spring to press downward is provided between the main spring and the connecting portion.

[0024] By adopting the above technical solution, the space reserved between the main spring and the connecting part allows the dynamic spring to have a rebound margin, and the pressing structure of the temperature controller will not crush the dynamic spring to cause temperature control failure, and the temperature control is more stable.

[0025] In a second aspect, the present application provides a thermostat that adopts the following technical solution:

[0026] A thermostat comprises an upper shell, a base, a static contact group and the above-mentioned thermostat reed structure, wherein the static contact group comprises a first contact arranged below a dynamic reed and a second contact arranged above the dynamic reed, the bottom of the second contact is fixedly connected to a static contact point, an adjustment shaft is passed through the top wall of the upper shell, the adjustment shaft is fixedly connected to a membrane box at one end close to the base, and the bottom of the membrane box is fixedly connected to a top rod for pressing the bent portion.

[0027] By adopting the above technical solution, when the temperature of the controlled object changes, the membrane box expands or compresses due to the influence of thermal expansion and contraction, driving the push rod to move in the vertical direction and press the movable spring. At this time, the movable spring deforms and drives the movable contact to move, thereby realizing the on-off of the circuit.

[0028] Optionally, a limit plate is connected to the upper surface of the first contact piece, and the limit plate is opposite to the static contact point.

[0029] By adopting the above technical solution, a space for the moving contact to move is formed between the limit plate and the static contact, preventing the moving contact from being over-pressed and causing material fatigue of the energy storage spring and the moving spring, thereby improving the service life and ensuring the durability of the product.

[0030] Optionally, a reset pressing piece for abutting the bottom of the membrane box is provided inside the upper shell.

[0031] By adopting the above technical solution, the reset pressure piece always provides a supporting force to the membrane box. When the temperature of the controlled object changes, the reset pressure piece can help the membrane box to achieve rapid and accurate reset, driving the top rod to lift up, thereby achieving rapid and accurate temperature control and improving the accuracy of the thermostat.

[0032] In summary, this application has the following beneficial effects:

[0033] 1. By setting the abutment plate, one end of the dynamic spring can be effectively fixed. When the ejector pin is pressed, the dynamic contact point responds more sensitively, thereby effectively improving the accuracy of temperature control.

[0034] 2. By setting the energy storage reed, the energy storage reed can provide elastic force when the moving contact moves, thereby effectively helping the moving contact to achieve fast switching, improving the response speed and ensuring the accuracy of the thermostat. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of the thermostat according to the embodiment of the present application;

[0036] Figure 2 is an exploded view of a thermostat according to an embodiment of the present application;

[0037] Figure 3 2 is a schematic structural diagram of the thermostat reed structure of an embodiment of the present application;

[0038] Figure 4 is a side view of the base of an embodiment of the present application;

[0039] Figure 5 It is a cross-sectional view of the interior of the upper shell of an embodiment of the present application.

[0040] Explanation of the accompanying reference numerals: 1. moving reed; 11. main reed; 111. moving contact; 112. accommodating hole; 113. bending portion; 114. through hole; 12. energy storage reed; 121. groove; 2. reed seat; 21. connecting portion; 22. abutting portion; 23. fixing plate; 231. fixing groove; 3. upper shell; 31. adjusting shaft; 32. membrane box; 33. push rod; 34. reset pressing piece; 4. base; 5. static contact piece group; 51. first contact piece; 511. limit plate; 52. second contact piece; 521. static contact. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-5 This application is described in further detail.

[0042] The embodiments of the present application disclose a thermostat reed structure and a thermostat.

[0043] Reference Figure 1 、 Figure 2The thermostat includes an upper shell 3 and a base 4. The base 4 houses a static contact assembly 5, a dynamic spring 1, and a spring holder 2 for securing the dynamic spring 1. One end of the dynamic spring 1 is connected to a dynamic contact 111 for contacting the contact assembly. An adjustment shaft 31 is pierced through the top wall of the upper shell 3. A membrane cartridge 32 is fixedly connected to the end of the adjustment shaft 31 near the base 4. A push rod 33, which presses the dynamic spring 1, is fixedly connected to the bottom of the membrane cartridge 32. When the temperature of the controlled object changes, the membrane cartridge 32 expands due to thermal expansion and contraction, driving the push rod 33 downward. At this point, the dynamic spring 1 swings under the influence of the push rod 33, driving the dynamic contact 111 to make or break contact with the contact assembly, thereby connecting and disconnecting the circuit and achieving the temperature control function.

[0044] Reference Figure 2 、 Figure 3 The static contact assembly 5 includes a first contact 51 located below the dynamic spring 1 and a second contact 52 located above the dynamic spring 1. A static contact 521 is fixedly connected to the bottom of the second contact 52. When the temperature of the controlled object changes, the push rod 33 presses down, causing the dynamic spring 1 to deform. This disconnects the dynamic contact 111 at one end of the dynamic spring 1 from the static contact 521, thereby switching the circuit.

[0045] Reference Figure 2 、 Figure 3 The dynamic spring 1 includes a main spring 11 and an energy storage spring 12. The main spring 11 is provided with an accommodating hole 112 for the energy storage spring 12 to pass through. The end of the energy storage spring 12 close to the moving contact 111 is fixedly connected to the inner wall of the accommodating hole 112. The spring seat 2 includes a connecting portion 21, an abutting portion 22 fixedly connected to one end of the connecting portion 21, and a fixed plate 23 fixedly connected to the end of the connecting portion 21 away from the abutting portion 22. The energy storage spring 12 is bent, and the end of the energy storage spring 12 away from the moving contact 111 abuts against the fixed plate 23. The end of the main spring 11 away from the moving contact 111 is riveted to the abutting portion 22.

[0046] When the push rod 33 is pressed down, the movable spring 1 will be deformed, so that the two sides of the pressing point will tend to swing upward. Since the end of the movable spring 1 away from the movable contact 111 is fixed by the abutment portion 22, a fulcrum is formed at this time. The end of the movable spring 1 with the movable contact 111 becomes a free end, and the displacement of the movable contact 111 end will be amplified, making it easier for the movable contact 111 end to be pressed down, thereby improving the temperature control accuracy.

[0047] The energy storage spring 12 abuts against the fixed plate 23, limiting the downward pressure of the movable spring 1 to a threshold. The energy storage spring 12 is bent and compressed, effectively storing elastic force. When the pressure reaches the threshold, the stored energy in the energy storage spring 12 is rapidly released to provide a boost, improving response speed and helping the movable contact 111 to move quickly, thereby achieving rapid circuit switching and improving temperature control accuracy.

[0048] Reference Figure 3 The fixing plate 23 is provided with a fixing groove 231 for engaging one end of the energy storage spring 12 on one side thereof close to the energy storage spring 12. This allows one end of the energy storage spring 12 to be effectively fixed, and the energy storage spring 12 is not easy to fall out of the fixing plate 23 during operation of the thermostat.

[0049] Reference Figure 3 The energy storage spring 12 is provided with a groove 121 on one side close to the fixing plate 23. The groove 121 can effectively disperse stress. When the energy storage spring 12 is working, the side abutting against the fixing groove 231 is not prone to cracks, thereby improving the service life of the energy storage spring 12.

[0050] Reference Figure 2 、 Figure 3 The main spring 11 is provided with a bent portion 113 for pressing by the ejector 33. The bent portion 113 is located on the side of the energy storage spring 12 near the abutment portion 22, and the bent portion 113 protrudes toward the side closer to the upper shell 3. The bent portion 113 facilitates pressing by the ejector 33, thereby effectively guiding the pressing direction of the ejector 33. The raised bent portion 113 toward the side closer to the upper shell 3 enables the ejector 33 to press the movable spring 1 more quickly, causing the movable spring 1 to deform, thereby improving the response sensitivity and reliability of the movable spring 1.

[0051] Reference Figure 2 、 Figure 3 The main spring 11 is provided with a through hole 114, which is located on the side of the bent portion 113 facing away from the energy storage spring. The provision of through hole 114 effectively reduces the rigidity of the movable spring 1, making it more susceptible to elastic deformation. This in turn drives the movable contact 111 to swing more easily, thereby improving the response speed.

[0052] Reference Figure 2 、 Figure 3 There is space between the bottom wall of the movable spring 1 near the bent portion 113 and the inner bottom wall of the spring seat 2 for the movable spring 1 to press down. When the thermostat reaches the highest control temperature and needs to be adjusted to a lower level, the adjustment shaft 31 will reverse, and the movable spring 1 will be subjected to a large pressure. The space reserved between the movable spring 1 and the spring seat 2 allows the movable spring 1 to rebound, and the movable spring 1 will not contact the bottom wall of the spring seat 2. Therefore, the adjustment shaft 31 will not crush the spring and cause temperature control failure, thereby ensuring the stability of temperature control.

[0053] Reference Figure 2 、 Figure 3 and Figure 4A limit plate 511 is fixedly connected to the upper surface of the first contact piece 51. The limit plate 511 is L-shaped and directly opposite the static contact 521. A space is formed between the limit plate 511 and the static contact 521 for the movable contact 111 to move. When the movable spring 1 drives the movable contact 111 downward, the limit plate 511 effectively acts as a limit, thereby preventing the movable spring 1 from excessively pressing the movable contact 111 downward, which could cause material fatigue of the energy storage spring 12 and the movable spring 1 and shorten its service life, thereby ensuring the durability of the product.

[0054] Reference Figure 5 The upper shell 3 is internally provided with a reset pressing piece 34 for contacting the bottom of the membrane box 32. When the upper shell 3 and the base 4 are combined, the bottom of the reset pressing piece 34 contacts the base 4, thereby providing a constant reset support force for the membrane box 32. When the temperature of the controlled object changes, the reset pressing piece 34 can help the membrane box 32 to achieve a rapid reset, thereby improving the accuracy of temperature control.

[0055] The implementation principle of a thermostat reed structure and a thermostat in an embodiment of the present application is as follows: when the temperature of the controlled object changes, the membrane box 32 expands and drives the top rod 33 to press down. At this time, the movable reed 1 is under pressure, and both ends of the movable reed 1 are elastically deformed. Since one end of the movable reed 1 is riveted to the abutment plate, the force is transmitted along the movable reed 1 to the end close to the movable contact 111, making it easier for the movable contact 111 to move to open and close the circuit, thereby achieving precise temperature control.

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A thermostat reed structure, characterized in that: include: A movable spring (1), the movable spring (1) comprising a main spring (11) and an energy storage spring (12), one end of the main spring (11) being provided with a movable contact (111), the main spring (11) being provided with a receiving hole (112), and one end of the energy storage spring (12) being close to the movable contact (111) being fixedly connected to the inner wall of the receiving hole (112); A reed seat (2), the reed seat (2) comprising a connecting portion (21), an abutting portion (22) fixedly connected to one end of the connecting portion (21), and a fixing plate (23) fixedly connected to one end of the connecting portion (21) away from the abutting portion (22), the fixing plate (23) being used for abutting the energy storage reed (12), the end of the main reed (11) away from the moving contact (111) being fixedly connected to the abutting portion (22), and the bottom wall of the main reed (11) being in contact with the abutting portion (22).

2. The thermostat reed structure according to claim 1, characterized in that: The fixing plate (23) is provided with a fixing groove (231) for engaging one end of the energy storage spring (12).

3. The thermostat reed structure according to claim 1, characterized in that: A groove (121) is provided on one side of the energy storage spring (12) close to the fixing plate (23).

4. The thermostat reed structure according to claim 1, characterized in that: One end of the main spring (11) away from the moving contact (111) is riveted to the abutment portion (22).

5. The thermostat reed structure according to claim 1, characterized in that: The main spring (11) is provided with a bent portion (113), the bent portion (113) is located on a side of the energy storage spring (12) close to the abutment portion (22), and the bent portion (113) protrudes toward a side away from the spring seat (2).

6. The thermostat reed structure according to claim 5, characterized in that: The main spring (11) is provided with a through hole (114), and the through hole (114) is arranged on a side of the bent portion (113) facing away from the energy storage spring (12).

7. The thermostat reed structure according to claim 1, characterized in that: A space for the main spring to be pressed downward is provided between the main spring (11) and the connecting portion (21).

8. A thermostat comprising an upper shell (3), a base (4), a static contact piece group (5), and the thermostat reed structure according to any one of claims 1 to 7, characterized in that: The static contact piece group (5) comprises a first contact piece (51) arranged below the dynamic spring piece (1) and a second contact piece (52) arranged above the dynamic spring piece (1); the bottom of the second contact piece (52) is fixedly connected to a static contact point (521); an adjustment shaft (31) is passed through the top wall of the upper shell (3); an end of the adjustment shaft (31) close to the base (4) is fixedly connected to a membrane box (32); and a top rod (33) for pressing the bent portion (113) is fixedly connected to the bottom of the membrane box (32).

9. The thermostat according to claim 8, characterized in that: The upper surface of the first contact piece (51) is connected to a limit plate (511), and the limit plate (511) is directly opposite to the static contact point (521).

10. The thermostat according to claim 8, characterized in that: A reset pressing piece (34) for abutting against the bottom of the membrane box (32) is provided inside the upper shell (3).

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