A retractable miniature temperature sensor head structure

Abstract

This utility model discloses a retractable miniature temperature sensor detection head structure, relating to the technical field of temperature sensor detection heads. It includes a housing with a telescopic shell inserted at one end. Inside the housing is a pneumatic assembly for driving the telescopic shell's vertical movement. Inside the telescopic shell is a thermistor element, with a lead wire body on one side of the thermistor element. Inside the housing is a winding assembly to prevent the lead wire body from tangling during the telescopic shell's vertical movement. This utility model uses a pneumatic assembly to drive the detection head's extension and retraction. A sealing ring on the outer circumference of the piston body ensures the housing's internal sealing, preventing gas leakage and insufficient driving force for extension and retraction, thus ensuring stable operation of the extension function. Simultaneously, a limiting ring plate inside the housing prevents the piston body from overtraveling, effectively protecting the structure of each component, reducing wear caused by excessive component movement, and extending the overall device's service life.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor detection head technology, and in particular to a retractable miniature temperature sensor detection head structure. Background Technology

[0002] In the field of temperature detection technology, the temperature sensor head is the core component for acquiring temperature data, and its structural design directly affects the detection efficiency and applicable scenarios.

[0003] With the increasing demands for temperature detection accuracy and operational flexibility in industrial production and precision instrument monitoring, traditional fixed temperature sensor heads are limited in applicability in confined spaces, deep cavity environments, or scenarios requiring dynamic switching of detection points due to their inability to adjust the detection end position according to detection needs. This makes it difficult to meet diverse detection requirements. Therefore, a retractable miniature temperature sensor head structure is urgently needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a retractable miniature temperature sensor head structure. Its advantages include: stable retraction and extension of the sensor head via pneumatic components; prevention of wire entanglement during retraction and extension using a winding and unwinding assembly, thus ensuring stable signal transmission; and improved wire safety and overall device lifespan through components such as a sheath and limiting ring.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A retractable miniature temperature sensor detection head structure includes a housing, with a telescopic shell inserted into the end of the housing, and a pneumatic component for driving the telescopic shell to move vertically inside the housing.

[0007] The telescopic shell is equipped with a thermistor element inside, and a wire body is provided on one side of the thermistor element;

[0008] The interior of the outer casing is equipped with a winding and unwinding assembly to prevent the wire body from tangling during the vertical movement of the telescopic casing.

[0009] The above technical solution provides a basic installation and telescopic space for the detection head through the plug-in connection between the outer shell and the telescopic shell. At the same time, the pneumatic component serves as a power source, which can precisely control the vertical movement of the telescopic shell, thereby adjusting the position of the detection end of the detection head to adapt to detection needs at different depths and positions. The thermistor element, as the core detection component, can quickly sense temperature changes and transmit signals through the lead wire body. The winding and unwinding assembly moves synchronously with the telescopic shell to avoid the lead wire body from getting tangled and stuck, ensuring smooth signal transmission and telescopic movement. The overall structure balances flexibility and stability.

[0010] Preferably, the pneumatic assembly includes an exhaust pipe and an intake pipe fixedly connected to the outer circumferential wall of the housing. Both the exhaust pipe and the intake pipe are connected to the interior of the housing. A sealing plate is fixedly connected to the interior of the housing. A piston body is provided inside the housing. An installation groove is formed on the outer circumferential wall of the piston body. A sealing ring is fixedly connected inside the installation groove to ensure the sealing of the interior of the housing.

[0011] Through the above technical solution: the intake pipe is used to connect to an external air source and inject gas into the shell to drive the piston body to move; the exhaust pipe is used to discharge gas and realize the piston body's reset. Through the cyclic intake or exhaust of air by the intake and exhaust pipes, the two work together to complete the telescopic shell's extension and retraction cycle. The sealing plate separates the shell's interior into a power chamber and other functional chambers, preventing gas leakage or component interference. At the same time, the piston body is directly connected to the telescopic shell, and its movement can directly drive the telescopic shell to extend and retract. The sealing ring is embedded in the piston body's mounting groove, which can fill the gap between the piston body and the inner wall of the shell, ensuring the airtightness of the power chamber, preventing gas leakage from causing insufficient driving force, and ensuring the stability and controllability of the extension and retraction action.

[0012] Preferably, the wire body is fixedly connected to the sealing plate and the piston body, and the wire body passes through the interior of the sealing plate and the piston body.

[0013] The above technical solution involves the wire body passing through the sealing plate and the piston body and being fixed, which can position the wire body, prevent it from shaking randomly inside the device, and ensure that the wire layout is neat.

[0014] Preferably, one end of the outer casing is fixedly connected to a sheath tube for protecting the conductor body.

[0015] The above technical solutions can effectively protect the conductor itself.

[0016] Preferably, the housing is internally fixedly connected with a limiting ring plate to prevent the piston body from moving beyond its travel range.

[0017] Through the above technical solution: when the piston body moves in the telescopic or resetting direction under the drive of gas, the limiting ring plate can directly block the piston body from continuing to move, avoiding the piston body from violently colliding with the end of the outer shell or the sealing plate due to excessive movement, preventing damage to components such as the piston body, telescopic shell or sealing plate, ensuring the integrity of the internal structure of the device, and extending the overall service life.

[0018] Preferably, the take-up and unwind assembly includes a rotating shaft rotatably connected to the inner circumference of the outer casing, one end of the rotating shaft being fixedly connected to a take-up roller, and the conductor body being wound around the outer circumference of the take-up roller.

[0019] The above technical solution provides rotational support for the take-up roller, allowing it to rotate flexibly. The outer wall of the take-up roller is wrapped with the conductor body. When the telescopic shell extends the conductor body outward, the take-up roller rotates synchronously to release the conductor. When the telescopic shell returns to its original position, the take-up roller rotates in the opposite direction to retract the conductor. This achieves synchronous release and retraction of the conductor body and the telescopic action, effectively preventing the conductor from becoming tangled, piled up, or excessively pulled due to telescopic movement, thus ensuring the safety of conductor use and the stability of signal transmission.

[0020] Preferably, the outer circumferential wall of the take-up roller is fixedly connected with a retaining ring plate, and each conductor body is wound between two retaining ring plates.

[0021] Through the above technical solution: two baffle plates form an independent wire storage area on the outer wall of the take-up roller, which restricts the wire body within a fixed range and prevents the wire from slipping off the sides of the take-up roller or crossing and tangling with each other during the take-up and unwinding process.

[0022] Preferably, a rack is fixedly connected to the bottom outer wall of the piston body, and a gear disk is fixedly connected to the circumferential outer wall of the take-up roller, with the rack meshing with the gear disk.

[0023] Through the above technical solution, the meshing transmission of the rack and pinion drives the linear motion of the piston body into the rotational motion of the take-up roller, so that the rotational speed of the take-up roller is synchronized with the moving speed of the piston body, providing a power source for the take-up and unwinding assembly.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. This utility model uses a pneumatic component to drive the extension and retraction of the detection head. The sealing ring on the outer circumference of the piston body ensures the sealing of the inner shell, preventing gas leakage and insufficient driving force for extension and retraction, thus ensuring stable operation of the extension and retraction function. At the same time, the limiting ring plate inside the shell can prevent the piston body from moving beyond its travel range, effectively protecting the structure of each component, reducing wear caused by excessive movement of parts, and extending the service life of the overall device.

[0026] 2. In this utility model, when the conductor body passes through the sealing plate and piston body, the regularity of the conductor layout is ensured. The sheath tube at one end of the outer shell can protect the conductor body, reduce the damage caused by external friction and collision to the conductor, and improve the service life of the conductor. Moreover, the winding and unwinding assembly can realize the synchronous winding and unwinding of the conductor body when the telescopic shell moves, avoiding the conductor from getting tangled or pulled, and further ensuring the stability of signal transmission.

[0027] 3. This utility model uses the retaining ring plate on the outer circumference of the winding roller to limit the conductor body, ensuring that the conductor is always wound between the two retaining ring plates, effectively preventing the conductor from deviating during winding and unwinding, further improving the regularity of conductor winding and unwinding, avoiding the impact of conductor deviation on the winding and unwinding effect, and ensuring the smooth operation of the entire detection head structure. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a retractable miniature temperature sensor detection head proposed in this utility model.

[0029] Figure 2 This is a half-sectional view of the housing, telescopic shell, and sheath of a retractable miniature temperature sensor detection head structure proposed in this utility model.

[0030] Figure 3 This utility model proposes a retractable miniature temperature sensor detection head structure. Figure 2 Enlarged structural diagram at point A;

[0031] Figure 4 This is a schematic diagram of the overall half-sectional planar structure of the retractable miniature temperature sensor detection head structure proposed in this utility model.

[0032] In the diagram: 1. Outer shell; 2. Telescopic shell; 3. Exhaust pipe; 4. Intake pipe; 5. Sheath tube; 6. Wire body; 7. Piston body; 8. Sealing ring; 9. Limiting ring plate; 10. Rack; 11. Sealing plate; 12. Thermistor element; 13. Take-up roller; 14. Gear disk; 15. Baffle plate. Detailed Implementation

[0033] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0034] Reference Figures 1-4 A retractable miniature temperature sensor head structure includes a housing 1, a telescopic shell 2 inserted into the end of the housing 1, and a pneumatic component for driving the telescopic shell 2 to move vertically inside the housing 1.

[0035] The inside of the telescopic shell 2 is provided with a thermistor element 12, and a wire body 6 is provided on one side of the thermistor element 12;

[0036] The housing 1 is equipped with a winding and unwinding assembly to prevent the wire body 6 from getting tangled during the vertical movement of the telescopic housing 2. The pneumatic assembly can stably extend and retract the detection head, and the winding and unwinding assembly can prevent the wire from getting tangled during the extension and retraction of the detection head, thereby ensuring stable signal transmission.

[0037] To achieve stable extension and retraction of the detection head and ensure power transmission efficiency, refer to Figures 1-2 The pneumatic assembly includes an exhaust pipe 3 and an intake pipe 4 fixedly connected to the outer circumference of the outer shell 1. Both the exhaust pipe 3 and the intake pipe 4 are connected to the interior of the outer shell 1. A sealing plate 11 is fixedly connected to the interior of the outer shell 1. A piston body 7 is installed inside the outer shell 1. An installation groove is opened on the outer circumference of the piston body 7. A sealing ring 8 is fixedly connected inside the installation groove to ensure the sealing of the interior of the outer shell 1. In use, an external air source injects gas into the interior of the outer shell 1 through the intake pipe 4. The gas accumulates in the sealed cavity formed by the sealing plate 11 and the piston body 7, generating thrust to push the piston body 7 to move vertically, thereby causing the telescopic shell 2 to extend. When it is necessary to reset, the air supply system supplies gas into the exhaust pipe 3. At this time, the piston body 7 falls back under the action of reverse air pressure, completing the telescopic cycle. At the same time, the sealing ring 8 on the outer wall of the piston body 7 can effectively prevent gas leakage, ensure stable pressure in the sealed cavity, and ensure smooth and accurate telescopic movement.

[0038] To position the conductor body 6 and reduce shaking and friction, refer to Figures 2-4 The wire body 6 is fixedly connected to the sealing plate 11 and the piston body 7. The wire body 6 passes through the inside of the sealing plate 11 and the piston body 7. The wire body 6 passes through and is fixed in the preset hole of the sealing plate 11 and the piston body 7, forming a fixed movement path. When the piston body 7 drives the telescopic shell 2 to move, the wire body 6 can move synchronously along the hole to avoid collision and friction with the inner wall of the shell 1 or other parts. At the same time, it prevents poor contact of the wire due to shaking, and ensures that the detection signal of the thermistor element 12 is stably transmitted to the external device.

[0039] To protect the conductor body 6 from external damage, refer to... Figure 1 One end of the outer shell 1 is fixedly connected to a sheath tube 5 for protecting the conductor body 6. The sheath tube 5 is made of wear-resistant and corrosion-resistant elastic material and is sleeved on the outside of the conductor body 6 extending outside the outer shell 1. It can block dust and moisture from entering the conductor insulation layer, and at the same time buffer the impact of external pulling and squeezing on the conductor, so as to avoid signal interruption due to damage to the conductor and extend the service life of the conductor.

[0040] To prevent excessive movement of piston body 7 from damaging components, refer to Figure 2 The outer casing 1 is internally fixedly connected to a limiting ring plate 9 to prevent the piston body 7 from moving beyond its travel range.

[0041] To achieve synchronized extension and retraction of the conductor body 6 and the telescopic movement, refer to Figures 1-3 The take-up and unwind assembly includes a rotating shaft rotatably connected to the inner circumference of the outer casing 1. One end of the rotating shaft is fixedly connected to a take-up roller 13. The wire body 6 is wound around the outer circumference of the take-up roller 13. When the telescopic shell 2 drives the wire body 6 to extend outward, the tension of the wire drives the take-up roller 13 to rotate clockwise to release the wire. When the telescopic shell 2 returns to its original position, the take-up roller 13 rotates counterclockwise to retract the wire and wind it around the roller body, preventing the wire from loosening and winding.

[0042] To prevent the wire from slipping or shifting during winding, refer to... Figures 2-3 A retaining ring plate 15 is fixedly connected to the outer circumference of the take-up roller 13. Each conductor body 6 is wound between two retaining ring plates 15. The retaining ring plate 15 is integrally formed with the take-up roller 13. The distance between the two retaining ring plates 15 is adapted to the diameter of the conductor body 6, forming an independent conductor storage groove. This ensures that the conductor is always in the groove during take-up and untake-up, and will not slip off the sides of the take-up roller 13 or cross and entangle with other conductors. This ensures smooth rotation of the take-up roller 13 and improves the reliability of the take-up and untake-up assembly.

[0043] To achieve synchronous linkage between the take-up roller 13 and the piston body 7, refer to Figures 1-3 A rack 10 is fixedly connected to the bottom outer wall of the piston body 7, and a gear disk 14 is fixedly connected to the circumferential outer wall of the take-up roller 13. The rack 10 meshes with the gear disk 14. When the piston body 7 moves vertically, the rack 10 at its bottom moves synchronously. Through meshing with the gear disk 14, it drives the take-up roller 13 to rotate. When the piston body 7 rises (i.e., the telescopic shell 2 extends), the rack 10 moves upward, driving the gear disk 14 to rotate clockwise. The take-up roller 13 releases the wire synchronously. When the piston body 7 falls (i.e., the telescopic shell 2 returns to its original position), the rack 10 moves downward, the gear disk 14 rotates counterclockwise, and the take-up roller 13 retracts the wire, so that the winding speed and the telescopic speed are precisely matched, avoiding the wire from being too loose or too tight.

[0044] Working principle: During operation, the extension and retraction of the detection head is completed by the pneumatic components. Specifically, gas is introduced into the air inlet pipe 4 through the external air supply system. After the gas enters the shell 1, it pushes the piston body 7 to move vertically. The piston body 7 then drives the telescopic shell 2 to extend out of the shell 1. When the gas is discharged, it is achieved through the exhaust pipe 3. During this process, the sealing ring 8 on the outer circumference of the piston body 7 can ensure the sealing of the shell 1 and prevent gas leakage from causing insufficient extension and retraction driving force. At the same time, the limiting ring plate 9 inside the shell 1 can prevent the piston body 7 from moving beyond its range, effectively protecting the structure of each component and extending the service life of the overall device.

[0045] When the telescopic shell 2 extends, its internal thermistor element 12 can contact the object to be tested for temperature detection. The detected signal is transmitted through the conductor body 6, which passes through the sealing plate 11 and the piston body 7, ensuring the regularity of the conductor layout. The sheath 5 at one end of the outer shell 1 protects the conductor body 6, reducing damage caused by external friction and collisions and extending the conductor's service life. During the vertical movement of the telescopic shell 2 along with the piston body 7, the rack 10 at the bottom of the piston body 7 moves synchronously. The rack 10 and the gear disk 14 on the outer circumference of the take-up roller 13 mesh with each other. The movement of the rack 10 will drive the gear disk 14 to rotate, which in turn will cause the take-up roller 13 to rotate, realizing the synchronous winding and unwinding of the wire body 6. This avoids the wire from getting tangled or pulled due to the movement of the telescopic shell 2, ensuring the stability of signal transmission. At the same time, the retaining ring plate 15 on the outer circumference of the take-up roller 13 can limit the wire body 6, ensuring that the wire is always wound between the two retaining ring plates 15, further improving the regularity of the wire winding and unwinding, and preventing the wire from deviating and affecting the winding and unwinding effect.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A retractable micro temperature sensor probe structure comprising a housing (1), characterized in that, The end of the outer shell (1) is connected to a telescopic shell (2), and the interior of the outer shell (1) is provided with a pneumatic component for driving the telescopic shell (2) to move vertically. The inside of the telescopic shell (2) is provided with a thermistor element (12), and a wire body (6) is provided on one side of the thermistor element (12); The housing (1) is provided with a winding and unwinding assembly to prevent the wire body (6) from getting tangled during the vertical movement of the telescopic housing (2).

2. The retractable micro temperature sensor detection head structure of claim 1, wherein, The pneumatic assembly includes an exhaust pipe (3) and an intake pipe (4) fixedly connected to the outer circumferential wall of the housing (1). Both the exhaust pipe (3) and the intake pipe (4) are connected to the interior of the housing (1). A sealing plate (11) is fixedly connected to the interior of the housing (1). A piston body (7) is provided inside the housing (1). An installation groove is provided on the outer circumferential wall of the piston body (7). A sealing ring (8) is fixedly connected inside the installation groove to ensure the sealing of the interior of the housing (1).

3. The retractable miniature temperature sensor detection head structure according to claim 2, characterized in that, The wire body (6) is fixedly connected to the sealing plate (11) and the piston body (7), and the wire body (6) passes through the interior of the sealing plate (11) and the piston body (7).

4. The retractable miniature temperature sensor detection head structure according to claim 3, characterized in that, One end of the outer shell (1) is fixedly connected to a sheath (5) for protecting the conductor body (6).

5. The retractable miniature temperature sensor detection head structure according to claim 4, characterized in that, The housing (1) is fixedly connected to a limiting ring plate (9) to prevent the piston body (7) from moving too far.

6. The retractable miniature temperature sensor detection head structure according to claim 5, characterized in that, The take-up and unwind assembly includes a rotating shaft rotatably connected to the inner circumference of the outer casing (1), one end of which is fixedly connected to a take-up roller (13), and the conductor body (6) is wound around the outer circumference of the take-up roller (13).

7. The retractable miniature temperature sensor detection head structure according to claim 6, characterized in that, The outer circumferential wall of the take-up roller (13) is fixedly connected with a retaining ring plate (15), and each conductor body (6) is wound between two retaining ring plates (15).

8. The retractable miniature temperature sensor detection head structure according to claim 7, characterized in that, A rack (10) is fixedly connected to the bottom outer wall of the piston body (7), and a gear disk (14) is fixedly connected to the circumferential outer wall of the take-up roller (13). The rack (10) meshes with the gear disk (14).

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