Kettle thermometer stem fixing structure

Abstract

The utility model relates to thermometer assembly technical field, concretely for the pole body fixed structure of kettle thermometer, including temperature measuring rod, the outside top of temperature measuring rod is equipped with metal gasket, the inside of metal gasket is provided with sealing ring b, the inside of sealing ring b and the outside of temperature measuring rod contact, the outside top of temperature measuring rod is connected with lower watch case slidingly, the top of lower watch case is provided with watch cover ring, the inside bottom of lower watch case is provided with mounting panel, the top of mounting panel is provided with mounting groove, the outside of temperature measuring rod is connected in the inside of mounting panel slidingly, this pole body fixed structure of kettle thermometer, through metal gasket engagement, double sealing ring elastic sealing, from the source avoids the problem of virtual welding and water leakage, compensates thermal expansion and contraction and size error, improves high temperature and high humidity working condition tightness, and the stable anti -loosening of combination positioning round plate anti -rotation limit is realized, modular assembly reduces equipment dependence and assembly difficulty, and dismouting is convenient.

Description

Technical Field

[0001] This utility model relates to the field of thermometer assembly, specifically to a rod fixing structure for a kettle thermometer. Background Technology

[0002] A rod-fixing structure is a device and component for positioning and fixing rod-shaped members. It can resist displacement, maintain stability, and adapt to installation and stress requirements. The rod-fixing structure of a kettle thermometer is used to ensure that the temperature sensing end is stably attached to the inside or wall of the kettle, avoiding shaking and displacement that would affect the temperature measurement accuracy. At the same time, it can withstand water temperature changes and touch during use, ensuring a firm installation, accurate readings, and durability.

[0003] Traditional kettle thermometers use laser welding to fix the rod and the housing directly. However, because the rod and housing are thin (such as thin-walled stainless steel parts), the welding process is prone to defects such as incomplete welding (the incomplete welding rate is about 3%), which can lead to sealing failure and water leakage, affecting product yield and service life.

[0004] To address this, we propose a rod fixing structure for a kettle thermometer that significantly reduces leakage by using a metal gasket for locking and a double sealing ring for elastic sealing, thus eliminating the need for welding. Utility Model Content

[0005] One of the technical problems this application aims to solve is that the rod body and the watch case are directly laser welded together. However, because the walls of the rod body and the watch case are relatively thin, incomplete welding defects are easily generated during the welding process, which leads to sealing failure and water leakage.

[0006] To solve the above-mentioned technical problems, this application provides a rod fixing structure for a kettle thermometer, including a temperature measuring rod. A metal gasket is sleeved on the top outer side of the temperature measuring rod, and a sealing ring b is provided inside the metal gasket. The inner side of the sealing ring b is in contact with the outer side of the temperature measuring rod. A lower cover is slidably connected to the top outer side of the temperature measuring rod, and a cover ring is provided on the top of the lower cover.

[0007] In some embodiments, a mounting plate is provided on the inner bottom of the lower housing, and a mounting groove is provided on the top of the mounting plate. The temperature measuring rod is slidably connected to the inside of the mounting plate.

[0008] In some embodiments, the outer side of the metal gasket engages with the inner side of the mounting groove, and a positioning circular plate is provided on the outer side of the temperature measuring rod.

[0009] In some embodiments, the top of the positioning circular plate is provided with a plurality of toothed limiting protrusions.

[0010] In some embodiments, the bottom of the lower casing is provided with a plurality of limiting grooves, and the top of the positioning circular plate is in contact with the bottom of the lower casing.

[0011] In some embodiments, the outer side of the toothed limiting protrusion is slidably connected to the inner side of the limiting groove, and a sealing ring a is placed in the top groove of the toothed limiting protrusion.

[0012] In some embodiments, the inner side of the sealing ring a is sleeved on the outside of the temperature measuring rod, and the top of the outer side of the sealing ring a contacts the bottom groove of the lower casing.

[0013] This utility model has at least the following beneficial effects: 1. By using the interlocking and fixing of the metal gasket and the mounting plate, and the synergistic effect of the elastic sealing of the double sealing rings, the welding process is eliminated, thus avoiding the defects of false welding at the source, significantly reducing the leakage rate and significantly improving the product yield. At the same time, the double sealing rings can compensate for thermal expansion and contraction and dimensional errors, greatly improving the sealing reliability under high temperature and high humidity conditions, effectively avoiding equipment failure caused by water vapor leakage from the kettle, and extending the product's service life.

[0014] 2. By utilizing the interlocking fit between the toothed protrusions of the positioning circular plate and the limiting groove, as well as the locking and fixing of the metal gasket, a combined force of circumferential anti-rotation and axial limiting is formed, which avoids the temperature measuring rod from shifting or rotating due to vibration and temperature changes, thus achieving a stable and non-loosening mechanism. The modular assembly eliminates the need for welding processes, reducing assembly difficulty and equipment dependence. At the same time, the components are easy to disassemble and assemble, significantly improving production efficiency and the convenience of later maintenance, and adapting to the needs of large-scale production and daily use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the metal gasket structure of this utility model; Figure 3 This is a schematic diagram of the positioning circular plate structure of this utility model; Figure 4 This utility model Figure 3 Enlarged diagram of A in the middle; Figure 5 This is a schematic diagram of the sealing ring b structure of this utility model.

[0016] In the diagram: 1. Temperature measuring rod; 2. Lower housing; 3. Cover ring; 4. Positioning plate; 5. Sealing ring a; 6. Toothed limiting protrusion; 7. Limiting groove; 8. Mounting plate; 9. Mounting groove; 10. Metal gasket; 11. Sealing ring b. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figure 1 , Figure 2 and Figure 5 This utility model provides a technical solution: a rod fixing structure for a kettle thermometer, including a temperature measuring rod 1. A metal gasket 10 is fitted on the top outer side of the temperature measuring rod 1. The metal gasket 10 has an outer square and inner ring structure. It is axially fixed by mechanical clamping force to prevent the temperature measuring rod 1 from moving axially. A sealing ring b11 is provided inside the metal gasket 10. The sealing ring b11 is a ring-shaped elastic body. The elastic deformation of the sealing ring b11 can fill the micro gap between the metal gasket 10 and the contact surface of the rod, forming a sealing structure of physical barrier and elastic fit to achieve static sealing. The inner side of the sealing ring b11 is in contact with the outer side of the temperature measuring rod 1. Dynamic sealing compensation is achieved by radial interference fit. The outer top of the temperature measuring rod 1 is slidably connected to the lower housing 2. The lower housing 2 is a hollow cylindrical structure and serves as the main support carrier for the instrument assembly. The top of the lower housing 2 is provided with a cover ring 3, which is a transparent cover structure used to protect the internal dial and observe the temperature reading. The bottom of the inner side of the lower housing 2 is provided with a mounting plate 8, which is an annular boss structure that provides an axial positioning reference. The top of the mounting plate 8 is provided with a mounting groove 9, which is a rectangular groove that forms a snap-fit ​​with the outer diameter of the metal gasket 10. The outside of the temperature measuring rod 1 is slidably connected to the inside of the mounting plate 8. When the metal gasket 10 is pressed into the mounting groove 9 by the tooling, the outer diameter of the metal gasket 10 and the inner diameter of the mounting groove 9 are interference fit. During the pressing process, the metal gasket 10 undergoes plastic deformation and is tightly locked onto the outside of the temperature measuring rod 1. At the same time, it is tightly locked onto the inner wall of the mounting groove 9. The mechanical clamping force forms a two-way constraint, which not only restricts the axial movement of the temperature measuring rod 1, but also the axial support force of the metal gasket 10 counteracts the displacement tendency of the temperature measuring rod 1 and restricts the radial sway of the temperature measuring rod 1. The friction force generated by the interference fit fixes the radial position, realizing the reliable axial fixation of the rod body. The outside of the metal gasket 10 is locked onto the inside of the mounting groove 9, and the radial displacement of the temperature measuring rod 1 is restricted by mechanical interlocking.

[0019] Example 2: Please refer to Figures 3-5The temperature measuring rod 1 is provided with a positioning circular plate 4 on its outside. The positioning circular plate 4 is a disc-shaped structure and serves as the main load-bearing component for the anti-rotation function. The top of the positioning circular plate 4 is provided with multiple toothed limiting protrusions 6. The toothed protrusions are wedge-shaped and sawtooth-shaped, which are used to cooperate with the limiting grooves 7 to form an anti-rotation lock. The bottom of the lower casing 2 is provided with multiple limiting grooves 7. The limiting grooves 7 are radial grooves that match the toothed protrusions and restrict the degree of rotation. When the equipment vibrates or the temperature changes, causing thermal expansion and contraction, the sawtooth structure restricts its circumferential rotation and axial movement, thereby preventing the temperature measuring rod 1 from being displaced due to the loosening of the metal gasket 10 and ensuring the stability of the fixation. The top of the positioning circular plate 4 and the bottom of the lower casing 2 are in contact to form an axial support surface, which transmits the clamping force to the sealing component. The outside of the toothed limiting protrusions 6 is slidably connected to the inside of the limiting grooves 7, and the relative rotation tendency is eliminated through the groove and tooth cooperation. A sealing ring a5 is placed in the groove. The sealing ring a5 is a corrugated elastomer that provides pre-tightening force compensation and secondary sealing. The inner side of the sealing ring a5 is fitted over the outside of the temperature measuring rod 1, forming a flexible contact seal with the outer wall of the temperature measuring rod 1. The top of the outer side of the sealing ring a5 contacts the bottom of the groove of the lower casing 2. Through elastic deformation, it fills the micro-unevenness of the contact surface, achieving interface sealing. The axially superimposed sealing rings a5 and b11 form a double sealing defense line. When a single sealing gasket has a slight leakage risk due to aging or wear, the other set of sealing gaskets can continue to play a sealing role. At the same time, the elastic deformation of the two sealing gaskets is superimposed, and the gap filling effect is better. It is suitable for the sealing requirements in high temperature and high humidity environments, effectively preventing water vapor and liquid in the kettle from leaking through the gap between the temperature measuring rod 1 and the fixed structure, ensuring the reliability of the seal.

[0020] Based on the above embodiments, the following is the complete working principle of the above embodiments: The temperature measuring rod 1, as the core functional component, has its outer top edge radially limited and axially supported by the mounting plate 8. The temperature measuring rod 1 slides through the mounting plate 8, which is fixed by the assembly structure at the bottom inner side of the lower casing 2, providing stable radial support for the temperature measuring rod 1 and preventing radial swaying. Simultaneously, the metal gasket 10 is coaxially sleeved on the outer top edge of the temperature measuring rod 1, and its exterior engages with the mounting groove 9 at the top of the mounting plate 8, forming a radial constraint chain between the mounting plate 8, the metal gasket 10, and the temperature measuring rod 1. (The sealing ring...) b11 is located inside the metal gasket 10, and its inner side is in close contact with the outside of the temperature measuring rod 1. The elastic deformation of the sealing ring b11 fills the micro gap between the metal gasket 10 and the temperature measuring rod 1, blocking the radial leakage channel. The sealing ring a5 is placed in the groove of the toothed limiting protrusion 6 on the top of the positioning round plate 4. Its inner side is fitted and fits the outside of the temperature measuring rod 1, and its outer top is in close contact with the placement groove at the bottom of the lower casing 2. The elastic compression of the sealing ring a5 fills the axial gap between the positioning round plate 4 and the lower casing 2, forming an axial sealing barrier. The double sealing rings work together to ensure the reliability of the seal. The positioning disc 4 is sleeved on the outside of the temperature measuring rod 1, with its top tightly fitted to the bottom of the lower casing 2. Multiple toothed limiting protrusions 6 on the positioning disc 4 are slidably connected to corresponding limiting grooves 7 on the bottom of the lower casing 2. Through the meshing of the toothed protrusions and the limiting grooves 7, the circumferential rotation of the positioning disc 4 and the temperature measuring rod 1 is restricted, preventing circumferential displacement of the temperature measuring rod 1 due to vibration or temperature changes during kettle use. Simultaneously, the axial fit between the positioning disc 4 and the lower casing 2, combined with the locking and fixing of the metal gasket 10 within the mounting groove 9, forms an axial limiting force, preventing the temperature measuring rod 1 from... The axial movement ensures anti-loosening during long-term use. The modular assembly of each component enables collaborative work. The assembly method of metal gasket 10 engaging with mounting groove 9 and toothed limiting protrusion 6 embedding into limiting groove 7 ensures accurate positioning and convenient assembly of each component. The elastic deformation characteristics of sealing ring a5 and sealing ring b11 can compensate for minor dimensional errors during assembly and thermal expansion and contraction deformation during use, ensuring the sealing performance and fixation stability of the structure under different working conditions. At the same time, it eliminates the need for complex welding processes, reducing assembly difficulty and improving assembly efficiency and structural maintainability.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A rod fixing structure for a kettle thermometer, comprising a temperature measuring rod (1), characterized in that: A metal gasket (10) is fitted on the top outer side of the temperature measuring rod (1). A sealing ring b (11) is provided inside the metal gasket (10). The inner side of the sealing ring b (11) is in contact with the outer side of the temperature measuring rod (1). A lower cover (2) is slidably connected to the top outer side of the temperature measuring rod (1). A cover ring (3) is provided on the top of the lower cover (2).

2. The rod fixing structure of the kettle thermometer according to claim 1, characterized in that: The bottom inner side of the lower casing (2) is provided with a mounting plate (8), and the top of the mounting plate (8) is provided with a mounting groove (9). The temperature measuring rod (1) is externally slidably connected to the inside of the mounting plate (8).

3. The rod fixing structure of the kettle thermometer according to claim 2, characterized in that: The metal gasket (10) is engaged with the inside of the mounting groove (9), and a positioning circular plate (4) is provided on the outside of the temperature measuring rod (1).

4. The rod fixing structure of the kettle thermometer according to claim 3, characterized in that: The top of the positioning circular plate (4) is provided with multiple toothed limiting protrusions (6).

5. The rod fixing structure of the kettle thermometer according to claim 4, characterized in that: The bottom of the lower casing (2) is provided with multiple limiting grooves (7), and the top of the positioning circular plate (4) is in contact with the bottom of the lower casing (2).

6. The rod fixing structure of the kettle thermometer according to claim 5, characterized in that: The toothed limiting protrusion (6) is slidably connected to the inside of the limiting groove (7), and a sealing ring a (5) is placed in the top groove of the toothed limiting protrusion (6).

7. The rod fixing structure of the kettle thermometer according to claim 6, characterized in that: The inner side of the sealing ring a (5) is sleeved on the outside of the temperature measuring rod (1), and the top of the outer side of the sealing ring a (5) is in contact with the bottom groove of the lower casing (2).

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