A cartridge type temperature measuring unit
The rotating connection structure between the outer shell and the guide plate enables stable contact between the probe and the switch contact, solving the problem of easy probe separation in existing temperature measuring devices, improving the accuracy and stability of temperature measurement, and adapting to switch contacts of different sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANDAN AORUI ELECTRONICS MACHINERY
- Filing Date
- 2025-10-20
- Publication Date
- 2026-07-21
AI Technical Summary
The small contact area between the probe and the switch contact in existing temperature measuring devices makes them prone to separation, resulting in inaccurate temperature measurements and an inability to accurately reflect the real-time status of the switch contact.
The outer shell is rotatably connected to the housing of the temperature measuring device. Combined with the guiding effect of the guide plate, the angle of the probe can be flexibly adjusted to ensure stable contact between the probe and the switch contact. The guide plate limits the probe on both sides to prevent separation.
It improves the accuracy and stability of temperature measurement, ensuring continuous measurement even when the switch contacts slide, adapting to switch contact positions in different installation scenarios, and expanding the scope of application.
Smart Images
Figure CN224535261U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of switch contact temperature measurement technology, specifically relating to a cartridge-type temperature measurement unit. Background Technology
[0002] During long-term operation, the contact resistance of switch contacts may increase due to various factors, which may lead to overheating. In order to provide early warning of fault risks and avoid serious power accidents caused by overheating of the contacts, a temperature measuring device is usually installed around the switch contacts to monitor the temperature of the switch contacts in real time.
[0003] Traditional temperature measuring devices typically employ a cartridge-style mounting structure for the temperature probe. After the temperature measuring device is fitted around the outer periphery of the switch contact, the probe rests against the surface of the switch contact under the action of a spring to achieve real-time temperature measurement. However, since the outer surface of the switch contact is curved, the contact between the probe and the switch contact is a point contact. When the switch contact vibrates or its surface is uneven, the probe and the switch contact are easily separated due to the elastic connection between the probe and its housing via a spring. This results in inaccurate temperature readings that fail to accurately reflect the real-time status of the switch contact. Utility Model Content
[0004] This utility model provides a cartridge-type temperature measuring unit, which aims to solve the technical problem in existing temperature measuring devices where the probe has a small contact area against the arc surface of the switch contact, making it easy to separate when shaken, resulting in inaccurate temperature measurements and an inability to accurately reflect the real-time status of the switch contact.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a magazine-type temperature measuring unit, comprising: The outer shell has an inner cavity and an opening communicating with the inner cavity, and one end of the outer shell opposite to the opening is rotatably connected to the housing of the temperature measuring device; A guide member is installed on the outer periphery of the opening of the housing. The guide member includes two guide plates arranged opposite each other, and the distance between the two guide plates gradually increases in the direction away from the housing. A probe that slides into the inner cavity and extends out of the opening is used to abut against the outer surface of the switch contact. An elastic element is disposed within the inner cavity, with its two ends connected to the probe and the bottom wall of the inner cavity, respectively.
[0006] In one possible implementation, one side edge of the guide plate is rotatably engaged with the housing, and a telescopic rod is provided inside the housing, the telescopic rod extending out of the opening end of the housing and abutting against the side wall of the guide plate facing the housing; The guide plate is rotated to adjust the included angle between the two guide plates.
[0007] In one possible implementation, a rotating shaft is fixed to the housing, the guide plate is rotatably connected to the rotating shaft, and a torsion spring is provided between the guide plate and the rotating shaft, the torsion spring having a preload force to make the guide plate fit against the surface of the switch contact.
[0008] In one possible implementation, the guide plate is provided with a rubber strip on one side wall facing the housing, and the rubber strip is perpendicular to the axial direction of the rotating shaft; The top of the telescopic rod is provided with a rubber block that abuts against the rubber strip.
[0009] One possible implementation also includes: The adjusting ring slides within the inner cavity in the vertical direction. An adjusting bolt is threaded into the bottom wall of the housing, and the top end of the adjusting bolt is rotatably engaged with the adjusting ring to drive the adjusting ring to move in the up-down direction; The bottom end of the telescopic rod is fixed to the adjusting ring.
[0010] In one possible implementation, the inner wall of the housing is provided with a groove, and the outer periphery of the adjusting ring is provided with a slider that cooperates with the groove.
[0011] In one possible implementation, the adjusting ring has a rolling groove inside and an extension at the bottom communicating with the rolling groove. The diameter of the extension is smaller than the diameter of the rolling groove. The adjusting ring has a rotating block that rotatably engages with the rolling groove. The end of the adjusting bolt extends into the extension and is fixedly connected to the rotating block.
[0012] In one possible implementation, the housing has a strip window extending in the vertical direction and a scale line located next to the strip window.
[0013] In one possible implementation, a ball bearing is embedded in one side wall of the guide plate facing the probe, the ball bearing being used to abut against the outer surface of the switch contact.
[0014] In one possible implementation, the guide plate is rolled outward from one side edge away from the housing to form a bend.
[0015] Compared with the prior art, the solution shown in this application embodiment has a rotatable connection between the outer shell and the housing of the temperature measuring device. With the guidance of the guide plate, the outer shell can drive the probe to swing towards the position of the switch contact under the action of the guide plate, realizing flexible angle adjustment to adapt to the position of the switch contact in different installation scenarios, improving installation flexibility, ensuring that the probe quickly finds the contact position and makes contact with a more appropriate position on the switch contact, and if slippage occurs after contact, the guide plate limits the probe on the left and right sides to prevent the probe from separating from the switch contact, ensuring the stability of the contact between the probe and the switch contact, thereby forming continuous temperature measurement values during operation and improving measurement accuracy. Attached Figure Description
[0016] Figure 1 A three-dimensional structural schematic diagram of the magazine-type temperature measuring unit provided in an embodiment of this utility model; Figure 2 A cross-sectional structural diagram of the magazine-type temperature measuring unit provided in this embodiment of the utility model.
[0017] Explanation of reference numerals in the attached figures: 10-Outer casing; 11-Hinge; 12-Slide groove; 13-Bar window; 14-Scale line; 21-Guide plate; 22-Rubber strip; 23-Ball bearing; 24-Bending section; 30-probe; 40 - Elastic element; 50 - Telescopic pole; 51 - Rubber block; 60 - Adjusting ring; 61 - Slider; 62 - Rotating block; 70 - Adjusting bolt. Detailed Implementation
[0018] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0022] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0023] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.
[0024] In this embodiment, the rotating connection structure between the outer shell 10 and the temperature measuring device housing is not shown in the figure. Specifically, a base is provided at the bottom of the outer shell 10 in the area between the two adjusting bolts 70. The base is provided with a through hole perpendicular to the axial direction of the outer shell 10. The housing of the temperature measuring device is provided with a shaft that rotates with the through hole, thereby realizing the rotation of the temperature measuring unit during use.
[0025] Please refer to the following: Figures 1 to 2 The magazine-type temperature measuring unit provided by this utility model will now be described. The magazine-type temperature measuring unit includes a housing 10, a guide member, a probe 30, and an elastic member 40. The housing 10 has an inner cavity and an opening communicating with the inner cavity. One end of the housing 10 away from the opening is rotatably connected to the housing of the temperature measuring device. The guide member is installed on the outer periphery of the opening of the housing 10. The guide member includes two opposing guide plates 21, the distance between the two guide plates 21 gradually increasing in the direction away from the housing 10. The probe 30 slides into the inner cavity and extends out of the opening. The probe 30 is used to abut against the outer surface of a switch contact. The elastic member 40 is disposed within the inner cavity, and its two ends are respectively connected to the probe 30 and the bottom wall of the inner cavity.
[0026] It should be noted that the temperature measuring unit needs to be installed inside the housing of the temperature measuring device when in use. After installation, the probe 30 and the guide plate 21 extend out of the inner circumference of the housing. When the temperature measuring device is fitted around the outer circumference of the switch contact, the guide plate 21 surrounds the outer circumference of the switch contact, causing the housing 10 to swing so that the probe 30 faces the switch contact and abuts against the outer circumference of the switch contact.
[0027] The specific electrical connection of probe 30 is not mentioned above. However, the electrical connection and temperature data transmission after probe 30 is installed in the housing of the temperature measuring device are existing technologies in the field and will not be elaborated here.
[0028] Compared with the prior art, the cartridge-type temperature measuring unit provided in this embodiment has a rotatable connection between the outer shell 10 and the housing of the temperature measuring device. With the guidance of the guide plate 21, the outer shell 10 can drive the probe 30 to swing towards the position of the switch contact under the action of the guide plate 21, realizing flexible angle adjustment to adapt to the position of the switch contact in different installation scenarios, improving installation flexibility, ensuring that the probe 30 can quickly find the contact position and make contact with a more appropriate position on the switch contact, and if slippage occurs after contact, the guide plate 21 limits the probe 30 on the left and right sides to prevent the probe 30 from separating from the switch contact, ensuring the stability of the contact between the probe 30 and the switch contact, thereby forming continuous temperature measurement values during operation and improving measurement accuracy.
[0029] In some embodiments, a specific cooperation method between the guide plate 21 and the housing 10 can be as follows: Figures 1 to 2 The structure shown. See also Figures 1 to 2 One side of the guide plate 21 is rotatably fitted to the outer casing 10. The outer casing 10 is provided with a telescopic rod 50, which extends out of the opening end of the outer casing 10 and abuts against the side wall of the guide plate 21 facing the outer casing 10. The guide plate 21 is rotated to adjust the included angle between the two guide plates 21.
[0030] Each guide plate 21 corresponds to a telescopic rod 50. Different switch contacts have different sizes. The angle between the two guide plates 21 can be adjusted according to the size of the switch contact. The telescopic rod 50 can limit the maximum angle between the two guide plates 21 to prevent the angle of the guide plates 21 from becoming too large and losing its guiding effect. This embodiment facilitates the adjustment of the guide plates 21, so that one temperature measuring unit can be used with switch contacts of various sizes, expanding the scope of application.
[0031] As a variation, the guide plate 21 can also be fixedly connected to the housing 10. In order to facilitate the replacement of the guide component according to the different sizes of switch contacts, the guide component also includes a fixing ring. The two guide plates 21 are fixedly connected to the fixing ring, and the fixing ring is sleeved on the outer periphery of the opening of the housing 10. The included angle between the two guide plates 21 on different fixing rings is different. The guide component can be replaced by disassembling the fixing ring.
[0032] In some embodiments, a specific connection method between the guide plate 21 and the housing 10 can be as follows: Figures 1 to 2 The structure shown. See also Figures 1 to 2A rotating shaft 11 is fixedly connected to the outer casing 10. A guide plate 21 is rotatably connected to the rotating shaft 11. A torsion spring is provided between the guide plate 21 and the rotating shaft 11. The torsion spring has a preload force to make the guide plate 21 fit against the surface of the switch contact. The guide plate 21 has a shaft hole for the rotating shaft 11 to pass through. The guide plate 21 is sleeved on the rotating shaft 11 through the shaft hole to achieve a rotatable connection with the outer casing 10. When the torsion spring is installed, one end is embedded in the side wall of the guide plate 21, and the other end is fixed to the outer casing 10. The torsion spring will generate a torque on the guide plate 21 in its natural state. The torque forms a preload force to make the guide plate 21 fit against the surface of the switch contact. No manual adjustment is required, which simplifies the installation process. Moreover, when the switch contact shakes, the torsion spring can also make the guide plate 21 always fit against the switch contact, which enhances the fit stability between the temperature measuring unit and the switch contact and ensures the temperature measuring accuracy.
[0033] As an alternative implementation, the guide plate 21 can also be connected to the housing 10 via a hinge.
[0034] In some embodiments, a specific cooperation method between the guide plate 21 and the telescopic rod 50 can be as follows: Figures 1 to 2 The structure shown. See also Figures 1 to 2 A rubber strip 22 is provided on one side wall of the guide plate 21 facing the outer casing 10, and the rubber strip 22 is perpendicular to the axial direction of the rotating shaft 11; a rubber block 51 is provided at the top of the telescopic rod 50 to abut against the rubber strip 22. When the guide plate 21 is at its maximum opening, the rubber strip 22 on the guide plate 21 abuts against the rubber block 51 on the telescopic component, which can avoid frequent rigid collisions between the guide plate 21 and the telescopic rod 50, thus preventing the service life from being shortened. Furthermore, due to the large friction of the rubber material, when the rubber block 51 and the rubber strip 22 abut against each other, it can prevent relative sliding between the telescopic rod 50 and the guide plate 21, ensuring that the support and adjustment effect of the telescopic rod 50 on the guide plate 21 is stable and reliable.
[0035] Specifically, the rubber strip 22 can be directly bonded to the side wall of the guide plate 21, or a groove can be opened on the guide plate 21 and the rubber sheet can be filled into the groove; the same applies to the way the rubber block 51 and the telescopic rod 50 are matched.
[0036] In some embodiments, an improved implementation of the housing 10 described above may employ, as follows: Figures 1 to 2 The structure shown. See also Figures 1 to 2It also includes an adjusting ring 60 and an adjusting bolt 70. The adjusting ring 60 is slidably fitted in the inner cavity in the vertical direction. The adjusting bolt 70 is threadedly fitted with the bottom wall of the outer shell 10. The top end of the adjusting bolt 70 is rotatably fitted with the adjusting ring 60 to drive the adjusting ring 60 to move in the vertical direction. The bottom end of the telescopic rod 50 is fixed to the adjusting ring 60. The adjusting ring 60 is a circular ring structure, and its outer diameter matches the inner diameter of the inner cavity of the outer shell 10. It can slide vertically within the inner cavity of the outer shell 10. The outer surface of the adjusting bolt 70 is threaded, and the bottom wall of the outer shell 10 is provided with a threaded hole that matches the thread of the adjusting bolt 70. The adjusting bolt 70 passes through the threaded hole and extends into the inner cavity of the outer shell 10. The top end of the adjusting bolt 70 is rotatably engaged with the lower surface of the adjusting ring 60 through a bearing. When the adjusting bolt 70 is rotated, due to the thread engagement between the adjusting bolt 70 and the bottom wall of the outer shell 10, the bolt will move vertically along the axial direction, thereby driving the adjusting ring 60 to move vertically within the inner cavity of the outer shell 10. At the same time, the bottom end of the telescopic rod 50 is fixed to the upper surface of the adjusting ring 60 by welding or bolting. The vertical movement of the adjusting ring 60 will drive the telescopic rod 50 to move vertically in sync, thereby adjusting the extension length of the telescopic rod 50.
[0037] In this embodiment, rotating the adjusting bolt 70 can drive the adjusting ring 60 and the telescopic rod 50 to move up and down, thereby adjusting the extension length of the telescopic rod 50 and controlling the maximum included angle of the guide plate 21. Furthermore, the two telescopic rods 50 are fixed on an adjusting ring 60, which ensures that the extension lengths of the two telescopic rods 50 are equal and guarantees the symmetry of the two guide plates 21.
[0038] Specifically, see Figure 2 To improve the stability of the adjusting ring 60 during its up-and-down movement, the inner wall of the outer casing 10 is provided with a sliding groove 12, and the outer periphery of the adjusting ring 60 is provided with a slider 61 that cooperates with the sliding groove 12. This structure guides and limits the movement of the adjusting ring 60, preventing the adjusting ring 60 from rotating or deviating during movement, ensuring that the adjusting ring 60 always moves up and down along the axial direction, and ensuring the consistency of the extension length of the two telescopic rods 50.
[0039] Optionally, the cross-section of the slide groove 12 is T-shaped or dovetail-shaped, the shape of the slider 61 is adapted to the shape of the slide groove 12, and the slider 61 can be integrally formed with the adjusting ring 60.
[0040] In some embodiments, a specific engagement method between the adjusting ring 60 and the adjusting bolt 70 can be as follows: Figure 2 The structure shown. See also Figure 2The adjusting ring 60 has a rolling groove inside and an extension at the bottom communicating with the rolling groove. The diameter of the extension is smaller than the diameter of the rolling groove. The adjusting ring 60 has a rotating block 62 that rotatably engages with the rolling groove. The end of the adjusting bolt 70 extends into the extension and is fixedly connected to the rotating block 62. The adjusting bolt 70 is threaded into the bottom wall of the outer casing 10. When the adjusting bolt 70 is rotated, it drives the rotating block 62 to rotate within the rolling groove. Since the diameter of the rolling groove is larger than the diameter of the extension, the rotating block 62 will not fall out while rotating within the rolling groove, ensuring that the adjusting bolt 70 and the adjusting ring 60 do not separate when the adjusting bolt 70 is rotated for adjustment, thus ensuring the up-and-down movement of the telescopic rod 50.
[0041] As mentioned above, the adjusting bolt 70 can be connected to the adjusting ring 60 via a bearing. Therefore, the rotating block 62 in this embodiment can be replaced by a bearing. The inner ring of the bearing is fixed to the adjusting bolt 70, and the outer ring is fixed to the inner wall of the rolling groove.
[0042] In some embodiments, an improved implementation of the housing 10 described above may employ, as follows: Figure 1 The structure shown. See also Figure 1 The outer casing 10 has a strip-shaped viewing window 13 extending vertically and a scale line 14 located next to the strip-shaped viewing window 13. The viewing window is made of transparent acrylic sheet or glass and is fixed to the opening on the side wall of the outer casing 10 by adhesive or a slot. The position of the adjustment ring 60 inside the outer casing 10 can be clearly observed. By observing the correspondence between the adjustment ring 60 and the scale line 14 through the viewing window, the movement distance of the adjustment ring 60 can be intuitively understood. This allows the operator to intuitively observe the position and movement distance of the adjustment ring 60, which is convenient for precise control of the movement of the adjustment ring 60. In turn, it can accurately adjust the extension length of the telescopic rod 50 and the angle between the guide plate 21, thereby improving the accuracy of the adjustment.
[0043] In some embodiments, an improved implementation of the guide plate 21 may employ, as follows: Figures 1 to 2 The structure shown. See also Figures 1 to 2 A ball bearing 23 is embedded in the side wall of the guide plate 21 facing the probe 30. The ball bearing 23 is used to abut against the outer surface of the switch contact. Multiple circular mounting holes are evenly distributed on the side wall of the guide plate 21 facing the probe 30. Each mounting hole contains a ball bearing 23, which can roll freely within the mounting hole. A portion of the ball bearing 23 extends out of the mounting hole. When the guide plate 21 is in contact with the switch contact surface, the extended portion of the ball bearing 23 directly abuts against the outer surface of the switch contact. This rolling contact between the ball bearing 23 and the switch contact transforms traditional sliding friction into rolling friction, greatly reducing the friction between the guide plate 21 and the contact. This prevents the guide plate 21 from causing wear on the contact surface when the switch contact shakes, protecting the contact surface.
[0044] In some embodiments, an improved implementation of the guide plate 21 may employ, as follows: Figures 1 to 2 The structure shown. See also Figures 1 to 2 The guide plate 21 has its side edge away from the housing 10 curled outward to form a bend 24. The arc-shaped bend 24 prevents the edge of the guide plate 21 from being too sharp, preventing sharp edges from scratching the operator's hands or damaging the surface of the switch contacts during installation or use, thus improving the safety of the product. The arc-shaped structure formed by the bend 24 guides the switch contacts when they enter between the two guide plates 21, preventing the contacts from being stuck by the edges of the guide plates 21, ensuring that the contacts smoothly enter the designated position, and improving the smoothness of installation.
[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A magazine-type temperature measuring unit, characterized in that, include: The outer shell has an inner cavity and an opening communicating with the inner cavity, and one end of the outer shell opposite to the opening is rotatably connected to the housing of the temperature measuring device; A guide member is installed on the outer periphery of the opening of the housing. The guide member includes two guide plates arranged opposite each other, and the distance between the two guide plates gradually increases in the direction away from the housing. A probe that slides into the inner cavity and extends out of the opening is used to abut against the outer surface of the switch contact. An elastic element is disposed within the inner cavity, with its two ends connected to the probe and the bottom wall of the inner cavity, respectively.
2. The magazine-type temperature measuring unit as described in claim 1, characterized in that, One side edge of the guide plate is rotatably engaged with the outer shell. A telescopic rod is provided inside the outer shell. The telescopic rod extends out of the opening end of the outer shell and abuts against the side wall of the guide plate facing the outer shell. The guide plate is rotated to adjust the included angle between the two guide plates.
3. The magazine-type temperature measuring unit as described in claim 2, characterized in that, A rotating shaft is fixedly connected to the outer casing, and the guide plate is rotatably connected to the rotating shaft. A torsion spring is provided between the guide plate and the rotating shaft, and the torsion spring has a preload force to make the guide plate fit against the surface of the switch contact.
4. The magazine-type temperature measuring unit as described in claim 3, characterized in that, The guide plate has a rubber strip on one side wall facing the outer casing, and the rubber strip is perpendicular to the axial direction of the rotating shaft; The top of the telescopic rod is provided with a rubber block that abuts against the rubber strip.
5. The magazine-type temperature measuring unit as described in claim 2, characterized in that, Also includes: The adjusting ring slides within the inner cavity in the vertical direction. An adjusting bolt is threaded into the bottom wall of the housing, and the top end of the adjusting bolt is rotatably engaged with the adjusting ring to drive the adjusting ring to move in the up-down direction; The bottom end of the telescopic rod is fixed to the adjusting ring.
6. The magazine-type temperature measuring unit as described in claim 5, characterized in that, The inner wall of the outer casing is provided with a sliding groove, and the outer periphery of the adjusting ring is provided with a slider that cooperates with the sliding groove.
7. The magazine-type temperature measuring unit as described in claim 5, characterized in that, The adjusting ring has a rolling groove inside and an extension opening at the bottom that communicates with the rolling groove. The diameter of the extension opening is smaller than the diameter of the rolling groove. The adjusting ring has a rotating block that rotatably engages with the rolling groove. The end of the adjusting bolt extends into the extension opening and is fixedly connected to the rotating block.
8. The magazine-type temperature measuring unit as described in claim 5, characterized in that, The outer casing has a strip-shaped window extending in the vertical direction and a scale line located next to the strip-shaped window.
9. The magazine-type temperature measuring unit as described in claim 1, characterized in that, A ball bearing is embedded in one side wall of the guide plate facing the probe, and the ball bearing is used to abut against the outer surface of the switch contact.
10. The magazine-type temperature measuring unit as described in claim 1, characterized in that, The guide plate is bent outwards at one edge away from the outer casing to form a bend.