A bimetallic temperature regulating device

Abstract

This utility model discloses a bimetallic temperature regulating device, comprising: a watch case, an internal drawing plate, and a pinion and a large gear detachably mounted below the drawing plate; the pinion and large gear mesh with each other, and the pinion is rotatably connected to an adjustable screw, which is used to rotate and drive the pinion, the large gear, and the drawing plate to rotate. In this utility model, a pinion is mounted on one side of the bottom of the watch case via an adjustable screw, and the pinion meshes with the large gear mounted on a bracket below the drawing plate. During finished product inspection, rotating the adjustable screw drives the pinion to rotate, which in turn drives the large gear to rotate, synchronously rotating the drawing plate above, thereby achieving fine adjustment of the temperature reading.

Description

Technical Field

[0001] This utility model relates to the field of thermometer technology, specifically to a bimetallic temperature regulating device. Background Technology

[0002] A bimetallic thermometer uses a spirally wound bimetallic strip as its temperature-sensing element, housed within a protective sleeve. One end of the strip is fixed, called the fixed end, while the other end is connected to a thin shaft, called the free end. A pointer is mounted on the free end shaft. When the temperature changes, the free end of the sensing element rotates, causing the pointer on the shaft to change angle, indicating the corresponding temperature on the scale.

[0003] Existing bimetallic thermometers are sealed by welding after assembly. However, when finished product inspection is required, if there is a deviation in the temperature display, it needs to be cut open for calibration. This process is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a bimetallic temperature regulating device to solve the above problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution, including:

[0006] The watch case has a drawing board installed inside, and a small gear and a large gear are detachably installed below the drawing board.

[0007] The small gear and the large gear mesh with each other. The small gear is rotatably connected to the adjustable screw, which is used to rotate and drive the small gear, the large gear and the drawing board to rotate.

[0008] As a further description of the above technical solution, a mounting through hole is provided on one side of the bottom of the watch case, and the adjustable screw is detachably mounted on the watch case through the mounting through hole. The pinion and the rotating screw are fixedly connected by riveting.

[0009] As a further description of the above technical solution, a gasket is installed between the pinion and the watch case, and the gasket has a cavity formed inside.

[0010] As a further description of the above technical solution, an O-ring is sleeved inside the receiving cavity, and the O-ring abuts against the inner side of the gasket and the outer side of the adjustable screw.

[0011] As a further description of the above technical solution, a bracket is installed in the middle of the drawing board, and the bottom of the bracket is inserted into the middle of the watch case.

[0012] As a further description of the above technical solution, a temperature measuring rod is sleeved between the bracket and the watch case, and a connector is sleeved on the outside of the temperature measuring rod, and the connector is welded to the watch case.

[0013] As a further description of the above technical solution, a temperature sensing component is inserted in the middle of the bracket, and a pointer component is rotatably connected to the top of the temperature sensing component.

[0014] As a further description of the above technical solution, an elastic ring is provided at the edge of the top of the watch case.

[0015] As a further description of the above technical solution, a glass cover is installed on the top of the elastic ring.

[0016] As a further description of the above technical solution, a cover ring is fixedly wrapped around the outside of the watch case and the glass cover.

[0017] The beneficial effects of this utility model are as follows:

[0018] In this invention, a small gear is installed on one side of the bottom of the watch case via an adjustable screw. The small gear meshes with a large gear mounted on a bracket below the drawing board. During finished product inspection, the small gear can be rotated by rotating the adjustable screw, which in turn drives the large gear to rotate, and simultaneously drives the drawing board above to rotate, thereby achieving fine adjustment of the temperature reading.

[0019] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the bimetallic temperature regulating device of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the bimetallic temperature regulating device of this utility model. Figure 2 ;

[0022] Figure 3 yes Figure 2 Enlarged diagram of point AA in the middle.

[0023] Figure label:

[0024] 1. Case; 101. Mounting through hole; 2. Drawing board; 3. Pinion; 4. Gear; 5. Adjustable screw; 6. Washer; 601. Receiving cavity; 7. O-ring; 8. Bracket; 9. Temperature measuring rod; 10. Connector; 11. Temperature sensing component; 12. Pointer component; 13. Elastic ring; 14. Glass cover; 15. Cover ring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] like Figures 1-3 As shown, in one embodiment, a bimetallic temperature regulating device includes: a housing 1, and a display plate 2 for displaying temperature readings is installed inside the housing 1. A pinion 3 and a gear 4 are detachably mounted below the display plate 2, and the pinion 3 and gear 4 mesh with each other. The pinion 3 is rotatably connected to an adjustable screw 5.

[0027] It is understandable that rotating the adjustable screw 5 can drive the small gear 3 to rotate, which in turn drives the large gear 4 and the upper plate 2 to rotate synchronously.

[0028] It should be noted in detail that a mounting through hole 101 is provided on one side of the bottom of the watch case 1. The hole wall is polished to eliminate burrs and reduce surface roughness, ensuring smooth installation and sealing. Correspondingly, the adjustable screw 5 is detachably installed on the watch case 1 through the mounting through hole 101. The end is designed with a cross groove or hexagonal inner hole for easy disassembly, installation and adjustment of tightness using a screwdriver or Allen wrench. In addition, the pinion 3 and the rotating screw are fixedly connected by riveting to ensure that the pinion 3 and the rotating screw always rotate synchronously during operation, effectively avoiding loosening and displacement.

[0029] Furthermore, a gasket 6 is installed between the pinion 3 and the case 1 to ensure that it can maintain good elasticity and stability when subjected to the axial force generated by the gear operation; correspondingly, a bowl-shaped receiving cavity 601 is formed inside the gasket 6, and an O-ring 7 is fitted inside the receiving cavity 601.

[0030] Understandably, when the O-ring 7 is inserted into the receiving cavity 601, its outer side fits tightly against the groove on the inner side of the gasket 6, while its inner side tightly wraps around the outer cylindrical surface of the adjustable screw 5, forming a double sealing structure. This not only prevents dust, liquids and other impurities from entering the gear transmission system, but also reduces frictional wear between the adjustable screw 5 and the gasket 6, extends the service life of the components, and thus ensures the reliability and stability of the entire mechanical structure.

[0031] Please continue reading. Figures 1-3 In this embodiment, a bracket 8 is installed in the middle of the plate 2. It is formed by an integrated forging process and the bottom is designed as a tenon structure with a guide bevel. It can be accurately and stably inserted into the positioning hole in the middle of the case 1 and achieve a tight connection through interference fit.

[0032] Furthermore, a temperature measuring rod 9 is fitted between the bracket 8 and the housing 1. Its surface is specially polished to reduce thermal resistance and improve heat conduction efficiency. A custom-made metal connector 10 is fitted on the outside of the temperature measuring rod 9. The connector 10 is firmly welded to the housing 1 using argon arc welding. The weld is inspected for flaws to ensure connection strength and sealing, preventing external environment from interfering with the temperature measuring system.

[0033] Specifically, a temperature sensing component 11 is inserted in the middle of the bracket 8, and a pointer component 12 is rotatably connected to the top of the temperature sensing component 11 to ensure that the pointer can rotate flexibly and accurately, and accurately display the temperature value in conjunction with the drawing board 2.

[0034] It should be noted that a silicone rubber elastic ring 13 is provided at the top edge of the watch case 1, which can maintain a stable shape when subjected to external pressure; a glass cover 14 is installed on the top of the elastic ring 13, and a slight arc is designed at the contact point with the elastic ring 13 to ensure that the two fit seamlessly after installation, further improving the sealing performance; after the cover ring 15 is evenly pressurized, it fits tightly with the watch case 1 and the glass cover 14 and covers their exterior, forming a strong fixed structure.

[0035] Working principle: A small gear 3 is installed on one side of the bottom of the case 1 by an adjustable screw 5. The small gear 3 meshes with the large gear 4 installed on the bracket 8 below the drawing plate 2. During finished product inspection, the small gear 3 can be rotated by rotating the adjustable screw 5, which in turn drives the large gear 4 to rotate, and synchronously drives the drawing plate 2 above to rotate, thereby achieving fine adjustment of the temperature reading.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bimetallic temperature regulating device, characterized in that, include: Watch case (1), inside which a drawing plate (2) is installed, and a small gear (3) and a large gear (4) are detachably installed below the drawing plate (2). The small gear (3) and the large gear (4) mesh with each other. The small gear (3) and the adjustable screw (5) are rotatably connected. The adjustable screw (5) is used to rotate and drive the small gear (3), the large gear (4) and the drawing board (2) to rotate.

2. The bimetallic temperature regulating device according to claim 1, characterized in that, The watch case (1) has a mounting through hole (101) on one side of the bottom. The adjustable screw (5) is detachably mounted on the watch case (1) through the mounting through hole (101). The pinion (3) is fixedly connected to the adjustable screw (5) by riveting.

3. The bimetallic temperature regulating device according to claim 1, characterized in that, A gasket (6) is installed between the pinion (3) and the watch case (1), and the gasket (6) has a cavity (601) formed inside.

4. The bimetallic temperature regulating device according to claim 3, characterized in that, An O-ring (7) is fitted inside the receiving cavity (601), and the O-ring (7) abuts against the inner side of the gasket (6) and the outer side of the adjustable screw (5).

5. The bimetallic temperature regulating device according to claim 1, characterized in that, A bracket (8) is installed in the middle of the drawing board (2), and the bottom of the bracket (8) is inserted into the middle of the case (1).

6. The bimetallic temperature regulating device according to claim 5, characterized in that, A temperature measuring rod (9) is sleeved between the bracket (8) and the watch case (1), and a connector (10) is sleeved on the outside of the temperature measuring rod (9). The connector (10) is welded to the watch case (1).

7. The bimetallic temperature regulating device according to claim 6, characterized in that, A temperature sensing component (11) is inserted in the middle of the bracket (8), and a pointer component (12) is rotatably connected to the top of the temperature sensing component (11).

8. The bimetallic temperature regulating device according to claim 1, characterized in that, An elastic ring (13) is provided at the top edge of the watch case (1).

9. The bimetallic temperature regulating device according to claim 8, characterized in that, A glass cover (14) is installed on the top of the elastic ring (13).

10. The bimetallic temperature regulating device according to claim 9, characterized in that, The outer sides of the watch case (1) and the glass cover (14) are covered and fixed with a cover ring (15).

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