Temperature controller pressing sheet structure and temperature controller

Abstract

The utility model relates to the technical field of temperature controllers, and particularly discloses a temperature controller pressing piece structure and a temperature controller, the temperature controller pressing piece structure comprises a pressing piece body, the pressing piece body comprises a connecting piece and clamping arms connected to the two sides of the connecting piece, the connecting piece is provided with a through hole for an ejector rod to penetrate through, and the ejector rod is arranged in the through hole. The clamping arms on the two sides extend towards the side close to the top of the connecting piece, and the opposite sides of the clamping arms on the two sides are connected with hook feet. The temperature controller comprises an upper shell, a base fixedly connected to the bottom of the upper shell and the temperature controller pressing piece structure, a movable contact piece and a static contact piece are fixedly connected in the base, an adjusting shaft is arranged on the top wall of the upper shell in a penetrating mode, and the end, close to the base, of the adjusting shaft is connected with a diaphragm capsule. The bottom of the diaphragm capsule is fixedly connected with an ejector rod used for pressing the movable contact piece, the ejector rod is arranged on the connecting piece in a penetrating mode, and the distance between the clamping pieces on the two sides of the connecting piece is larger than the width of the upper shell. The method has the advantage that automatic assembly is facilitated.

Description

Technical Field

[0001] The present application relates to the field of thermostat technology, and in particular to a thermostat pressing sheet 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] A new type of liquid expansion mechanical temperature controller is disclosed in the Chinese patent with announcement number CN211125494U, which includes an electrical seat, a thermostat body, a power part 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 installed with a moving contact, the static contact piece is installed with a static contact, and the moving contact piece and the static contact piece are installed 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 part 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, which mainly solves the problems of untimely reset of the thermostat, low temperature control accuracy and poor temperature stability.

[0004] When the above-mentioned temperature controller is assembled, the stainless steel pressing piece is likely to fall out from the bottom of the membrane box, which may easily lead to defective products in the automated production process and reduce production efficiency. Utility Model Content

[0005] To facilitate assembly, the present application provides a thermostat pressing sheet structure and a thermostat.

[0006] The present application provides a thermostat pressing structure and a thermostat that adopt the following technical solutions:

[0007] A thermostat pressing plate structure includes a pressing plate body, the pressing plate body includes a connecting plate and clamping arms connected to both sides of the connecting plate, the connecting plate is provided with a through hole for a push rod to pass through, the clamping arms on both sides extend toward the side close to the top of the connecting plate, and the clamping arms on both sides are connected to hook feet on the opposite sides.

[0008] By adopting the above technical solution, during assembly, the clamping arms can wrap around both sides of the membrane box and hook the inner wall of the membrane box through the hook feet, thereby fixing the pressing structure and ensuring that the pressing body will not fall out during the automated installation process, thereby affecting the assembly efficiency and ensuring the stability of the installation process.

[0009] Optionally, both ends of the connecting piece are bent toward a side close to the base to form a locking piece, and the locking piece and the connecting piece form an angle of 100°-110°.

[0010] By adopting the above technical solution, the locking pieces on both sides need to be squeezed toward each other in order to place the pressing piece body into the shell of the thermostat. At this time, the locking pieces on both sides are continuously squeezed toward the inner wall of the shell of the thermostat under the action of elastic force, thereby providing greater friction, further preventing the pressing piece body from falling out of the shell, and ensuring that the position of the pressing piece body in the shell is fixed, thereby improving the stability of the installation.

[0011] Optionally, both ends of the connecting piece are bent downwards near one side of the locking piece to form a bent portion.

[0012] By adopting the above technical solution, the bending portion can produce a large elastic deformation when the locking piece is squeezed and bent, thereby providing effective elastic supporting force to help the membrane box of the temperature controller to be effectively reset; at the same time, the bending portion changes the rigid structure of the connecting piece, so that when the locking piece is squeezed, the connecting piece is not easy to break, thereby improving durability.

[0013] Optionally, the locking pieces on both sides are bent toward one side away from one end of the connecting piece to form an abutting portion.

[0014] By adopting the above technical solution, the abutment portion can contact the inner wall of the base. Compared with the snap-fit ​​piece directly contacting the inner wall of the base, the bent abutment portion has a larger contact area and can better provide supporting force, thereby ensuring the reset effect of the tablet body.

[0015] Optionally, the connecting piece is provided with a plurality of perforations therethrough.

[0016] By adopting the above technical solution, the material consumption of the tablet body is effectively reduced, thereby reducing the weight of the tablet body. In automated operation, it is convenient for the equipment to lift and install the tablet body, thereby improving installation efficiency.

[0017] A temperature controller comprises an upper shell, a base fixedly connected to the bottom of the upper shell, and the above-mentioned temperature controller pressing plate structure, wherein a moving contact piece and a static contact piece are fixedly connected in the base, an adjusting shaft is passed through the top wall of the upper shell, and the adjusting shaft is connected to a membrane box at one end close to the base, and a top rod for pressing the moving contact piece is fixedly connected to the bottom of the membrane box, the top rod is passed through the connecting piece, and the distance between the locking pieces on both sides of the connecting piece is greater than the width of the upper shell.

[0018] By adopting the above technical solution, it is necessary to squeeze the locking pieces on both sides to place the pressing body so that it can effectively abut the inner wall of the upper shell, and the clamping arms on both sides can buckle the membrane box to achieve effective fixation.

[0019] Optionally, an insulating plate is provided on one side of the base close to the end of the static contact piece, and a positioning hole is opened on the insulating plate for the static contact piece to pass through.

[0020] By adopting this technical solution, the insulating plate can improve the electrical insulation performance between the static contacts, preventing the risk of short circuits caused by contact movement during operation. The positioning holes help position and secure the static contacts, effectively improving assembly efficiency.

[0021] Optionally, the upper shell is provided with a fixing hole, and the insulating plate is circumferentially provided with a fixing groove for inserting the inner wall of the fixing hole.

[0022] By adopting the above technical solution, when the upper shell and the base are merged, the inner wall of the fixing hole will be inserted into the fixing groove, thereby playing an effective fixing role, so that the insulating plate can be stably installed between the upper shell and the base, ensuring that the insulating plate will not move due to external force.

[0023] Optionally, a guide surface is provided on the inner wall of the fixing hole.

[0024] By adopting the above technical solution, the guide surface plays a role of positioning and guiding, and can effectively guide the insulating plate to be inserted into the fixing hole along the fixing groove, thereby improving assembly efficiency.

[0025] Optionally, the side wall of the upper shell extends toward the side close to the base to form a positioning plate, and the side wall of the base is provided with a positioning groove for the positioning plate to engage with.

[0026] By adopting the above technical solution, when the upper shell and the base are closed, the positioning plate can be inserted into the positioning groove, thereby ensuring precise alignment and fixation between the upper shell and the base, thereby ensuring installation accuracy and assembly efficiency.

[0027] In summary, this application has the following beneficial effects:

[0028] 1. By setting the clamping arm and the hook foot, the tablet body can be stably fixed under the membrane box. During the process of moving the upper shell for assembly, the tablet body is not easy to fall, thereby effectively improving the assembly efficiency and ensuring the stability of the assembly process.

[0029] 2. By setting the positioning plate and positioning groove, the upper shell and the base can be accurately aligned and fixed when combined, which facilitates positioning and fixing, thereby effectively improving installation accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of the tablet body according to an embodiment of the present application;

[0031] Figure 2 Schematic diagram of the structure of the thermostat body of the embodiment of the present application;

[0032] Figure 3 is an exploded schematic diagram of the thermostat body of an embodiment of the present application;

[0033] Figure 4 It is a cross-sectional view of the interior of the upper shell of an embodiment of the present application.

[0034] Explanation of the accompanying drawings: 1. Pressing piece body; 11. Connecting piece; 111. Through hole; 12. Clamping arm; 13. Hook; 14. Engaging piece; 15. Bending portion; 16. Abutting portion; 17. Through hole; 2. Upper shell; 21. Adjusting shaft; 22. Membrane box; 23. Push rod; 24. Fixing hole; 241. Guide surface; 25. Positioning plate; 3. Base; 31. Moving contact piece; 32. Static contact piece; 33. Insulating plate; 331. Positioning hole; 332. Fixing groove; 34. Positioning groove. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The embodiment of the present application discloses a thermostat pressing structure and a thermostat. Figure 1 、 Figure 2 and Figure 3 The thermostat includes an upper shell 2 and a base 3 connected to the bottom of the upper shell 2. A movable contact 31 and a stationary contact 32 are fixedly connected to the base 3. The movable contact 31 is an elastic piece. An adjustment shaft 21 is inserted into the top wall of the upper shell 2. A membrane box 22 is fixedly connected to the end of the adjustment shaft 21 near the base 3. A push rod 23 is fixedly connected to the bottom of the membrane box 22 to press the movable contact 31. A pressing plate body 1 is mounted on the outside of the membrane box 22. The pressing plate body 1 has a through hole 111 for the push rod 23 to pass through. When the temperature of the controlled object rises, due to the phenomenon of thermal expansion and contraction, the membrane box 22 will expand, which in turn drives the push rod 23 to move downward, thereby pressing the movable contact 31. Due to the existence of the lever, the movable contact 31 and the stationary contact 32 are connected and disconnected, thereby achieving temperature control.

[0037] Reference Figure 1 The reset clip includes a connecting piece 11 and clamping arms 12 fixedly connected to both sides of the connecting piece 11. The clamping arms 12 extend to the top of the membrane box 22 toward the side close to the membrane box 22. The ends of the clamping arms 12 on both sides away from the connecting piece 11 are fixedly connected to hooks 13, which are located on the opposite sides of the clamping arms 12. During assembly, the clamping arms 12 are tightly attached to both sides of the membrane box 22 and hook the inner wall of the membrane box 22 through the hooks 13 to fix the tablet body 1. This makes it difficult for the tablet body 1 to fall out of the upper shell 2 during the automated assembly process, thereby affecting the assembly efficiency and product yield, and ensuring the stability of the installation process.

[0038] Reference Figure 1The connecting piece 11 is provided with two through-holes 17. The through-holes 17 significantly reduce the amount of material used, thereby reducing the weight of the tablet body 1. In automated operation, the equipment can easily lift and install the tablet body 1, thereby improving installation efficiency. In addition, the through-holes 17 effectively reduce the area of ​​the connecting piece 11, making it easier for the connecting piece 11 to bend and deform, effectively improving the resetting effect of the tablet body 1.

[0039] Reference Figure 1 、 Figure 3 and Figure 4 The two ends of the connecting piece 11 are bent toward the side close to the base 3 to form a snap-fit ​​piece 14. The snap-fit ​​piece 14 forms an angle of 100°-110° with the connecting piece 11. The distance between the snap-fit ​​pieces 14 on both sides is greater than the width of the upper shell 2. Since the distance between the snap-fit ​​pieces 14 on both sides is greater than the width of the upper shell 2, the snap-fit ​​pieces 14 on both sides need to be squeezed toward each other before they can be placed into the upper shell 2. At this time, under the influence of elastic deformation, the snap-fit ​​pieces 14 will continue to squeeze against the inner wall of the upper shell 2, thereby providing a large friction force. Cooperating with the clamping arm 12 and the hook foot 13, it further prevents the tablet body 1 from falling out of the upper shell 2, ensuring the stability of the tablet body 1 during installation and improving installation efficiency.

[0040] Reference Figure 1 The ends of the connecting piece 11 are bent downward to form curved portions 15, which are located near the engaging pieces 14. When the tablet body 1 and the upper shell 2 are to be assembled, the curved portions 15 facilitate bending and deformation of the connecting piece 11, facilitating the approach of the engaging pieces 14 on both sides for assembly to the bottom of the membrane box 22. Furthermore, the curved portions evenly distribute stress during bending, effectively preventing local fatigue fracture and improving the durability of the tablet body 1.

[0041] Reference Figure 1 The end of the engaging piece 14 away from the connecting piece 11 is bent toward the opposite side to form an abutting portion 16. The abutting portion 16 can abut against the inner wall of the base 3, thereby effectively supporting the tablet body 1 and ensuring the reset effect of the tablet body 1.

[0042] Reference Figure 2 、 Figure 3 An insulating plate 33 is mounted on the side of the base 3 near the stationary contact 32. This insulating plate 33 defines positioning holes 331 for the stationary contact 32 to pass through. The insulating plate 33 effectively improves the insulation between adjacent stationary contacts 32. The positioning holes 331 help secure the stationary contacts 32, preventing movement and short circuits during operation, thereby ensuring electrical safety. Furthermore, the positioning holes 331 effectively facilitate positioning during assembly, improving assembly efficiency.

[0043] Reference Figure 3 、 Figure 4The upper shell 2 defines a fixing hole 24, and the insulating plate 33 is circumferentially defined with a fixing groove 332 for insertion into the inner wall of the fixing hole 24. A guide surface 241 is defined on the inner wall of the fixing hole 24, near the base 3. This effectively secures the insulating plate 33 between the upper shell 2 and the base 3, preventing it from moving due to external forces. The guide surface 241 acts as a positioning guide, effectively guiding the insulating plate 33 along the fixing groove 332 and into the fixing hole 24, thereby improving assembly efficiency.

[0044] Reference Figure 2 The sidewalls of the upper shell 2 extend toward the side closest to the base 3 to form positioning plates 25. Two positioning plates 25 are provided on either side of the upper shell 2, and positioning grooves 34 are provided on the sidewalls of the base 3 for the positioning plates 25 to engage. When the upper shell 2 and the base 3 are assembled, the positioning plates 25 on either side of the upper shell 2 are inserted into the positioning grooves 34 on either side of the base 3, thereby ensuring precise alignment and fixation between the upper shell 2 and the base 3, effectively improving installation accuracy and efficiency.

[0045] The implementation principle of a temperature controller pressing sheet structure and a temperature controller in an embodiment of the present application is as follows: during assembly, the locking pieces 14 on both sides of the pressing sheet body 1 are squeezed, and then the pressing sheet body 1 is pressed into the upper shell 2. At this time, the clamping arms 12 on both sides of the pressing sheet body 1 can fit on both sides of the membrane box 22, and the hook feet 13 are inserted into the inner wall of the membrane box 22 to achieve stable clamping. Finally, the upper shell 2 and the base 3 are locked together along the positioning plate 25 and the positioning groove 34 to achieve assembly of the temperature controller.

[0046] 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 pressing structure, comprising a pressing body (1), characterized in that: The pressing plate body (1) comprises a connecting plate (11) and clamping arms (12) connected to both sides of the connecting plate (11); the connecting plate (11) is provided with a through hole (111); the clamping arms (12) on both sides extend toward one side close to the top of the connecting plate (11); and hook feet (13) are connected to the opposite sides of the clamping arms (12) on both sides.

2. The thermostat pressing plate structure according to claim 1, characterized in that: Both ends of the connecting piece (11) are bent toward a side away from the clamping arm (12) to form a locking piece (14), and the locking piece (14) and the connecting piece (11) form an angle of 100°-110°.

3. The thermostat pressing plate structure according to claim 2, characterized in that: Both ends of the connecting piece (11) are bent downwards near one side of the locking piece (14) to form a bent portion (15).

4. The thermostat pressing structure according to claim 2, characterized in that: The engaging pieces (14) on both sides are bent toward one side away from one end of the connecting piece (11) to form an abutting portion (16).

5. The thermostat pressing plate structure according to claim 1, characterized in that: The tablet body (1) is provided with a plurality of perforations (17) extending therethrough.

6. A thermostat comprising an upper shell (2), a base (3) fixedly connected to the bottom of the upper shell (2), and a thermostat pressing structure according to any one of claims 1 to 5, characterized in that: A movable contact piece (31) and a stationary contact piece (32) are fixedly connected to the base (3); an adjusting shaft (21) is passed through the top wall of the upper shell (2); an end of the adjusting shaft (21) close to the base (3) is connected to a membrane box (22); a top rod (23) for pressing the movable contact piece (31) is fixedly connected to the bottom of the membrane box (22); the top rod (23) is passed through the connecting piece (11); and the distance between the engaging pieces (14) on both sides of the connecting piece (11) is greater than the width of the upper shell (2).

7. The thermostat according to claim 6, characterized in that: An insulating plate (33) is provided on one side of the base (3) close to the end of the static contact piece (32), and a positioning hole (331) is provided on the insulating plate (33) for the static contact piece (32) to pass through.

8. The thermostat according to claim 7, characterized in that: The upper shell (2) is provided with a fixing hole (24), and the insulating plate (33) is circumferentially provided with a fixing groove (332) for inserting the inner wall of the fixing hole (24).

9. The thermostat according to claim 8, characterized in that: The inner wall of the fixing hole (24) is provided with a guide surface (241).

10. The thermostat according to claim 6, characterized in that: The side wall of the upper shell (2) extends toward a side close to the base (3) to form a positioning plate (25), and the side wall of the base (3) is provided with a positioning groove (34) for the positioning plate (25) to engage.

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