Temperature sensor with adjustable insertion length

Abstract

The invention discloses a temperature sensor with adjustable insertion length, comprising a wire, a junction box and a probe, and also comprising a winding component, a driving component and an output component; the wire comprises an input part, a winding part and an output part which are connected in sequence, the input part extends into the interior of the junction box, the winding part is spirally wound on the outside of the winding component, the output part extends out of the junction box and is accommodated in the interior of the output component, and the winding component is provided with the driving component; the driving component slides upward to drive the winding component to reverse, the length of the input part remains unchanged, the driving component drives the end of the winding part to rotate out of the winding component and extend into the interior of the output component, the length of the winding part is shortened, and the output part increases the rotating length of the winding part.

Description

Technical Field

[0001] The invention relates to the field of temperature sensors, and in particular to a temperature sensor with adjustable insertion length. Background Art

[0002] Temperature sensor refers to a sensor that can sense temperature and convert it into a usable output signal. Temperature sensor is the core part of temperature measuring instruments and there are many varieties. According to the measurement method, it can be divided into two categories: contact type and non-contact type. According to the sensor material and electronic component characteristics, it can be divided into two categories: thermal resistor and thermocouple.

[0003] The length-adjustable temperature sensor with the Chinese utility model patent publication number CN214893713U realizes the adjustment of the length between the stop screw and the display box through the flexible compensation wire, and further realizes the adjustment of the distance between the armor platinum lead and the display box. However, when the object to be measured is a tubular part or an object with a small inner diameter, when the stop screw follows the armor platinum lead into the interior of the object to be measured, the staff cannot adjust the stop screw from the outside, which makes the use of this device have certain limitations.

[0004] Therefore, it is proposed to provide a temperature sensor with adjustable insertion length, the insertion length of which is adjusted outside the object to be measured. Summary of the invention

[0005] The object of the present invention is to provide a temperature sensor with adjustable insertion length to solve the technical problem that the existing length-adjustable temperature sensor is limited in that the length is adjusted by a stop screw.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temperature sensor with adjustable insertion length, comprising a wire, a junction box and a probe, and also comprising a winding assembly, a driving assembly and an output assembly; the wire comprises an input part, a winding part and an output part connected in sequence, the input part extends into the interior of the junction box, the winding part is spirally wound on the outside of the winding assembly, the output part extends out of the junction box and is accommodated in the output assembly, and the winding assembly is provided with the driving assembly; the driving assembly slides upward to drive the winding assembly to reverse, the length of the input part remains unchanged, the driving assembly drives the end of the winding part to rotate out of the winding assembly and extend into the interior of the output assembly, the length of the winding part is shortened, and the output part increases the rotating length of the winding part.

[0007] Furthermore, the winding assembly includes a rotating ring, which is rotatably arranged between the upper and lower walls of the junction box through a limiting member, and the limiting member includes a limiting ring, a support ring and a limiting column; the limiting column and the support ring are fixedly installed on the inner bottom wall of the junction box, the rotating ring is arranged on the outside of the limiting column and the inside of the support ring, and the limiting ring is installed on the top of the outer ring surface of the rotating ring; the winding part is spirally wound and arranged on the outside of the rotating ring, the rotating ring is between the limiting ring and the support ring, and there is no gap between two adjacent circles of the winding part.

[0008] Furthermore, the driving assembly includes a threaded shaft and a handle, the inner wall of the rotating ring is provided with an internal thread, the outer side of the threaded shaft is provided with an external thread that matches the internal thread, the handle is fixedly installed on the top of the threaded shaft, the handle is fixedly connected to a scale through a connecting rod, the bottom end of the scale extends into the interior of the junction box and is slidably connected to the top wall of the junction box, and the bottom surface of the threaded shaft is movably engaged with the top surface of the limit column.

[0009] Furthermore, a protective cover is movably sleeved on the top of the junction box, and the protective cover is provided with an extension hole corresponding to the handle, and the protective cover is provided with a scale hole corresponding to the connecting rod and the scale; when the handle and the extension hole are placed correspondingly, the handle slides through the extension hole; when the handle and the extension hole are placed alternately, the protective cover prevents the handle from sliding, and the inner top wall of the protective cover movably abuts against the top of the handle.

[0010] Further, the output assembly includes a first extending shell, a first protective sleeve, a first sliding ring and a first spring;

[0011] The first protruding shell is fixedly connected to the side wall of the junction box away from the input part, the first protective cover is sleeved on the outside of the output part, the first protective cover is slidably arranged inside the first protruding shell through the first sliding ring, and the first spring is further arranged between the side wall of the junction box and the first sliding ring, the first spring is wound around the outside of the first protective cover, the first spring is arranged as an extension spring, and the first spring keeps the output part away from the junction box.

[0012] Furthermore, the output component includes a second protective cover, a second sliding ring and a second spring; the second protective cover is sleeved on the outer side of the output part, the second sliding ring is fixedly sleeved on the outer side of the second protective cover, the second spring is connected to the bottom of the second sliding ring, and the second protective cover is slidably arranged inside the telescopic part through the second sliding ring and the second spring.

[0013] Furthermore, the side wall of the junction box is installed with the second protruding shell, and multiple groups of the telescopic parts are installed between the second protruding shell and the second protective cover, and the telescopic parts include a connecting seat and a third spring; the leftmost connecting seat is slidably arranged in the second protruding shell, and the diameters of two adjacent connecting seats decrease from left to right, and any one of the middle connecting seats is slidably arranged inside the adjacent left connecting seat, and the second protective cover is slidably arranged in the rightmost connecting seat through the second sliding ring.

[0014] Furthermore, one end of the second spring away from the second sliding ring is fixedly connected to the rightmost connecting seat, and the limit elongation distance of the second spring is the length of one circle of the winding part around the rotating ring;

[0015] The third spring at the leftmost end is connected between the connecting seat at the leftmost end and the outer side wall of the junction box, and the third spring is arranged between any two connecting seats in the middle, and the specifications of the third spring and the second spring are the same; the maximum extension distance of the connecting seat is the length of the winding part around the rotating ring.

[0016] Furthermore, the output end of the output unit is connected to a probe, and the probe is used to test the temperature of the object to be measured.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention drives the rotating ring to rotate by sliding the threaded shaft, thereby increasing or reducing the number of turns of the winding part, thereby changing the length of the output part and adjusting the insertion length of the corresponding probe; at the same time, since the handle is fixedly connected with the scale through the connecting rod, when the threaded shaft slides, the insertion length of the corresponding probe is marked on the scale, which is clearly displayed; when it is necessary to adjust to the specified insertion length, the handle is pulled until the scale displays the specified insertion length, and the operation is simple; at the same time, the insertion length direction of the device is perpendicular to the sliding direction of the threaded shaft, which is more conducive to the measurement of tubular parts or objects with smaller inner diameters.

[0019] 2. The present invention adopts the structural arrangement of the protective cover, the junction box, the handle and the extension hole, so that when the device is not working, the protective cover and the junction box are misaligned and connected, so as to achieve self-locking of the device and protection of the handle and the scale; when the device needs to be adjusted to a specified insertion length, the extension hole on the protective cover is placed correspondingly at the top of the handle, and the insertion length of the probe can be adjusted by pulling the handle and observing the scale to the specified insertion length.

[0020] 3. The present invention arranges the connecting seat, the third spring and the second protective cover (equivalent to the first protective cover), the second sliding ring (equivalent to the first sliding ring) and the second spring in multiple groups of telescopic parts, so that the multi-layer connecting seats can be slidably stored in the second protective cover. At the same time, each telescopic part can represent the length of one circle of the winding part around the rotating ring. The number of circles of the winding part and the telescopic part can be set correspondingly, which is convenient for the most reasonable use of the device, with a compact structure and high linkage of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the internal structure of the first embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of the internal cross-sectional structure of the first embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the top view of the protective cover of the present invention;

[0024] Figure 4 is a schematic cross-sectional structural diagram of an output assembly of Embodiment 1 of the present invention;

[0025] Figure 5 is a schematic diagram of the internal structure of the second embodiment of the present invention;

[0026] Figure 6 is a schematic diagram of the internal cross-sectional structure of the second embodiment of the present invention;

[0027] Figure 7 is a side structural schematic diagram of embodiment 2 of the present invention;

[0028] Figure 8 is a schematic cross-sectional structural diagram of an output assembly of Embodiment 2 of the present invention;

[0029] Description of reference numerals in the figures:

[0030] 10. Wire; 101. Input part; 102. Winding part; 103. Output part; 11. Junction box; 12. Rotating ring; 13. Limiting ring; 14. Supporting ring; 15. Limiting column; 21. Protective cover; 22. Extension hole; 23. Scale hole; 31. Threaded shaft; 32. Handle; 33. Connecting rod; 34. Scale; 41. First extension shell; 42. First protective cover; 43. First sliding ring; 44. First spring; 51. Probe; 61. Second protective cover; 62. Second sliding ring; 63. Second spring; 64. Connecting seat; 65. Third spring; 66. Second extension shell. DETAILED DESCRIPTION

[0031] Embodiment 1, as Figure 1-4 As shown;

[0032] A temperature sensor with adjustable insertion length comprises a wire 10, a junction box 11 and a probe 51, and also comprises a winding assembly, a driving assembly and an output assembly; the wire 10 comprises an input part 101, a winding part 102 and an output part 103 connected in sequence, the input part 101 extends into the interior of the junction box 11, the winding part 102 is spirally wound on the outside of the winding assembly, the output part 103 extends out of the junction box 11 and is accommodated in the output assembly, and the winding assembly is provided with the driving assembly; the driving assembly slides upward to drive the winding assembly to reverse, the length of the input part 101 remains unchanged, the driving assembly drives the end of the winding part 102 to rotate out of the winding assembly and extend into the interior of the output assembly, the length of the winding part 102 is shortened, and the output part 103 increases the length of the winding part 102 that is rotated out.

[0033] Preferably, when the driving assembly slides upward by the diameter of the winding portion 102, the shortened length of the winding portion 102 is the length of one circle of the winding portion 102 around the winding assembly.

[0034] As a further scheme of this embodiment, the winding assembly includes a rotating ring 12, and the rotating ring 12 is rotatably arranged between the upper and lower walls of the junction box 11 through a limiting member, and the limiting member includes a limiting ring 13, a support ring 14 and a limiting column 15; the limiting column 15 and the support ring 14 are fixedly installed on the inner bottom wall of the junction box 11, the rotating ring 12 is arranged on the outside of the limiting column 15 and the inside of the support ring 14, and the limiting ring 13 is installed on the top of the outer ring surface of the rotating ring 12; the winding part 102 is spirally wound and arranged on the outside of the rotating ring 12, the rotating ring 12 is between the limiting ring 13 and the support ring 14, and there is no gap between two adjacent circles of the winding part 102.

[0035] When the driving assembly slides upward by the diameter of the winding portion 102 , the shortened length of the winding portion 102 is the length of one circle of the winding portion 102 around the rotating ring 12 .

[0036] As a further solution of this embodiment, the driving assembly includes a threaded shaft 31 and a handle 32. The inner wall of the rotating ring 12 is provided with an internal thread, and the outer side of the threaded shaft 31 is provided with an external thread that matches the internal thread. The handle 32 is fixedly installed on the top of the threaded shaft 31, and the handle 32 is fixedly connected to a scale 34 through a connecting rod 33. The bottom end of the scale 34 extends into the interior of the junction box 11 and is slidably connected to the top wall of the junction box 11. The bottom surface of the threaded shaft 31 is movably engaged with the top surface of the limit column 15.

[0037] In this embodiment, the threaded shaft 31 slides to drive the rotating ring 12 to rotate, thereby increasing or reducing the number of turns of the winding portion 102, thereby changing the length of the output portion 103 and adjusting the insertion length of the corresponding probe 51.

[0038] Preferably, by knowing the diameter of the wire 10, the outer diameter of the rotating ring 12, and the size of the threaded shaft 31, we can set it so that the threaded shaft 31 rises by one wire 10 diameter, the rotating ring 12 rotates one circle, and the winding part 102 reduces the length of the winding part 102 around the rotating ring 12. At this time, the output part 103 increases the screw-out length of the winding part 102, and the corresponding insertion length of the probe 51 is obtained; corresponding to the sliding distance of the threaded shaft 31, the insertion length of the probe 51 is marked on the scale.

[0039] In this embodiment, when the staff pulls the threaded shaft 31 through the handle 31, since the handle 32 is fixedly connected to the scale 34 through the connecting rod 33, when the threaded shaft 31 slides, the insertion length of the corresponding probe 51 is marked on the scale 34, which is clearly displayed; when it is necessary to adjust to the specified insertion length, just pull the handle 32 until the scale 34 displays the specified insertion length, and the operation is simple; at the same time, the insertion length direction of the device is perpendicular to the sliding direction of the threaded shaft 31, which is more conducive to the measurement of tubular parts or objects with a smaller inner diameter.

[0040] As a further solution of this embodiment, a protective cover 21 is movably sleeved on the top of the junction box 11, and the protective cover 21 is provided with an extension hole 22 corresponding to the handle 32, and the protective cover 21 is provided with a scale hole 23 corresponding to the connecting rod 33 and the scale 34; when the handle 32 and the extension hole 22 are placed correspondingly, the handle 32 slides through the extension hole 22; when the handle 32 and the extension hole 22 are placed alternately, the protective cover 21 blocks the handle 32 from sliding, and the inner top wall of the protective cover 21 movably abuts against the top of the handle 32.

[0041] Preferably, the protective cover 21 and the junction box 11 are both arranged in a rectangular shape. Since the extension hole 22 and the scale hole 23 are both opened on the front side of the top wall of the protective cover 21, when the handle 32 on the protective cover 21 and the extension hole 22 are placed correspondingly, the handle 32 and the scale 34 can slide through the extension hole 22. If the protective cover 21 is rotated 180 degrees and then connected to the junction box 11, the handle 32 and the extension hole 22 are staggered, and the handle 32 and the scale 34 are against the bottom end of the protective cover. At this time, the device as a whole is in a locked state.

[0042] Therefore, when the device is not working, the protective cover 21 and the junction box 11 are offset and connected to achieve self-locking of the device and protection of the handle 32 and the scale 34; when the device needs to be adjusted to a specified insertion length, the extension hole 22 on the protective cover 21 is placed correspondingly on the top of the handle 32, and the handle 32 can be pulled and the scale 34 can be observed to the specified insertion length to achieve adjustment of the insertion length of the probe.

[0043] As a further solution of this embodiment, the output assembly includes a first extension shell 41, a first protective cover 42, a first sliding ring 43 and a first spring 44;

[0044] The first protruding shell 41 is fixedly connected to the side wall of the junction box 11 away from the input part 101, and the first protective cover 42 is sleeved on the outside of the output part 103. The first protective cover 42 is slidably arranged inside the first protruding shell 41 through the first sliding ring 43. The first spring 44 is also arranged between the side wall of the junction box 11 and the first sliding ring 43. The first spring 44 is wound around the outside of the first protective cover 42. The first spring 44 is arranged as an extension spring. The first spring 44 keeps the output part 103 away from the junction box 11.

[0045] In this embodiment, the elastic force of the first spring 44 ensures that the input part 101, the winding part 102 and the output part 103 always remain in a straight state; the first sliding ring 43 and the first spring 44 are used to adjust the insertion length of the probe 51, without the need for external power drive or manual operation, and the overall degree of automation of the device is high.

[0046] Embodiment 2, as Figure 5-8 As shown,

[0047] In the first embodiment, the elastic force of the first spring 44 has an elastic limit. If the probe 51 is specified to be inserted for a longer length, it is difficult to achieve this only by the elastic force of the first spring 44. At the same time, the first extended shell 41 that is too long is not conducive to the use and movement of the device, and is extremely inconvenient to use. Therefore, we have improved the output component of the first embodiment.

[0048] Wherein, the output component includes a second protective cover 61 (equivalent to the first protective cover 42), a second sliding ring 62 (equivalent to the first sliding ring 43) and a second spring 63 (equivalent to the first spring 44); the second protective cover 61 is sleeved on the outside of the output part 103, the second sliding ring 62 is fixedly sleeved on the outside of the second protective cover 61, the second spring 63 is connected to the bottom of the second sliding ring 62, and the second protective cover 61 is slidably arranged inside the telescopic member through the second sliding ring 62 and the second spring 63.

[0049] As a further solution of this embodiment, the side wall of the junction box 11 is installed with the second protruding shell 66, and multiple groups of the telescopic parts are installed between the second protruding shell 66 and the second protective cover 61, and the telescopic parts include a connecting seat 64 and a third spring 65; the leftmost connecting seat 64 is slidably arranged in the second protruding shell 66, and the diameters of the two adjacent connecting seats 64 decrease from left to right, and any one of the middle connecting seats 64 is slidably arranged inside the adjacent left connecting seat 64, and the second protective cover 61 is slidably arranged in the rightmost connecting seat 64 through the second sliding ring 62.

[0050] As a further solution of this embodiment, one end of the second spring 63 away from the second sliding ring 62 is fixedly connected to the rightmost connecting seat 64, and the maximum elongation distance of the second spring 63 is the length of the winding portion 102 around the rotating ring 12;

[0051] The third spring 65 at the leftmost end is connected between the connecting seat 64 at the leftmost end and the outer wall of the junction box 11, and the third spring 65 is arranged between any two connecting seats 64 in the middle, and the specifications of the third spring 65 and the second spring 63 are the same; the maximum extension distance of the connecting seat 64 is the length of the winding portion 102 around the rotating ring 12.

[0052] Preferably, the difference between the limit extension distance and the limit shortening distance of the second spring 63 and the third spring 65 is exactly the length of one circle of the winding portion 102 around the rotating ring 12 .

[0053] In this embodiment, through the structural combination arrangement of the connecting seat 64, the third spring 65 and the second protective cover 61 (equivalent to the first protective cover 42), the second sliding ring 62 (equivalent to the first sliding ring 43) and the second spring 63 in the multiple sets of telescopic parts, the multi-layer connecting seat 64 can be slidably stored in the second protective cover 61, and each telescopic part can represent the length of one circle of the winding part 102 around the rotating ring 12, and the number of circles of the winding part 102 and the telescopic part can be set correspondingly, so as to facilitate the most reasonable use of the device.

[0054] As a further solution of this embodiment, the output end of the output unit 103 is connected to a probe 51 , and the probe 51 is used to test the temperature of the object to be measured.

[0055] In this embodiment, the device can be reset by pressing the handle 32, which is simple to adjust and has high precision.

Claims

1. A temperature sensor with adjustable insertion length, comprising a wire, a junction box and a probe, characterized in that: Also includes a winding assembly, a driving assembly and an output assembly; The wire comprises an input part, a winding part and an output part which are connected in sequence, the input part extends into the inside of the junction box, the winding part is spirally wound on the outside of the winding assembly, the output part extends out of the junction box and is accommodated in the output assembly, and the driving assembly is arranged inside the winding assembly; The driving assembly slides upward to drive the winding assembly to reverse, the length of the input portion remains unchanged, the driving assembly drives the end of the winding portion to rotate out of the winding assembly and extend into the output assembly, the length of the winding portion is shortened, and the output portion increases the rotation length of the winding portion; The winding assembly comprises a rotating ring, which is rotatably arranged between the upper and lower walls of the junction box through a limiting member, and the limiting member comprises a limiting ring, a supporting ring and a limiting column; the limiting column and the supporting ring are fixedly installed on the inner bottom wall of the junction box, the rotating ring is arranged on the outer side of the limiting column and the inner side of the supporting ring, and the limiting ring is installed on the top of the outer ring surface of the rotating ring; the winding part is spirally wound and arranged on the outer side of the rotating ring, the rotating ring is between the limiting ring and the supporting ring, and there is no gap between two adjacent turns of the winding part; The driving assembly includes a threaded shaft and a handle, the inner wall of the rotating ring is provided with an internal thread, the outer side of the threaded shaft is provided with an external thread adapted to the internal thread, the handle is fixedly mounted on the top of the threaded shaft, the handle is fixedly connected to a scale through a connecting rod, the bottom end of the scale extends into the interior of the junction box and is slidably connected to the top wall of the junction box, and the bottom surface of the threaded shaft movably abuts against the top surface of the limiting column.

2. The temperature sensor with adjustable insertion length according to claim 1, characterized in that: A protective cover is movably sleeved on the top of the junction box, and a projection hole is provided on the protective cover corresponding to the handle, and a scale hole is provided on the protective cover corresponding to the connecting rod and the scale; when the handle and the projection hole are placed correspondingly, the handle slides through the projection hole; when the handle and the projection hole are placed alternately, the protective cover prevents the handle from sliding, and the inner top wall of the protective cover movably abuts against the top of the handle.

3. The temperature sensor with adjustable insertion length according to claim 2, characterized in that: The output assembly includes a first extending shell, a first protective sleeve, a first sliding ring and a first spring; The first protruding shell is fixedly connected to the side wall of the junction box away from the input part, the first protective cover is sleeved on the outside of the output part, the first protective cover is slidably arranged inside the first protruding shell through the first sliding ring, and the first spring is further arranged between the side wall of the junction box and the first sliding ring, the first spring is wound around the outside of the first protective cover, the first spring is arranged as an extension spring, and the first spring keeps the output part away from the junction box.

4. The temperature sensor with adjustable insertion length according to claim 2, characterized in that: The output assembly includes a second protective sleeve, a second sliding ring and a second spring; The second protective cover is sleeved on the outer side of the output part, the second sliding ring is fixedly sleeved on the outer side of the second protective cover, the second spring is connected to the bottom of the second sliding ring, and the second protective cover is slidably arranged inside the telescopic member through the second sliding ring and the second spring.

5. The temperature sensor with adjustable insertion length according to claim 4, characterized in that: A second extending shell is installed on the side wall of the junction box, and multiple groups of telescopic parts are installed between the second extending shell and the second protective cover, and the telescopic parts include a connecting seat and a third spring; the leftmost connecting seat is slidably arranged in the second extending shell, and the diameters of two adjacent connecting seats decrease from left to right. Any one of the middle connecting seats is slidably arranged inside the adjacent left connecting seat, and the second protective cover is slidably arranged in the rightmost connecting seat through the second sliding ring.

6. The temperature sensor with adjustable insertion length according to claim 5, characterized in that: One end of the second spring away from the second sliding ring is fixedly connected to the rightmost connecting seat, and the limit elongation distance of the second spring is the length of the winding part around the rotating ring; The third spring at the leftmost end is connected between the connecting seat at the leftmost end and the outer side wall of the junction box, and the third spring is arranged between any two connecting seats in the middle, and the specifications of the third spring and the second spring are the same; the maximum extension distance of the connecting seat is the length of the winding part around the rotating ring.

7. The temperature sensor with adjustable insertion length according to claim 3 or 6, characterized in that: The output end of the output part is connected with a probe, and the probe is used to test the temperature of the object to be measured.

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