Temperature sensor

Abstract

The utility model discloses a temperature sensor, which comprises a sensor main body, a fixed sleeve and a lead, a temperature probe is arranged at the front end of the sensor main body, a terminal assembly is arranged at the rear end of the sensor main body, the sensor main body penetrates through the fixed sleeve, the sensor main body and the fixed sleeve are fixed in a sealing manner, and an inner sleeve is formed at the rear end of the fixed sleeve. The terminal assembly is located on the inner side of the inner sleeve, a plug bush is formed at the front end of the lead, the plug bush is arranged on the outer side of the inner sleeve in a sleeving mode, the plug bush and the inner sleeve are matched in a sealing mode, a terminal base assembly is arranged at the bottom of the plug bush, and the terminal assembly and the terminal base assembly are matched in an inserted mode and electrically connected. According to the utility model, the lead wire does not need to be plugged manually in the testing process, so that the testing efficiency is improved, and batch testing is facilitated.

Description

Technical Field

[0001] This utility model relates to sensors, and more particularly to a temperature sensor. Background Technology

[0002] Temperature sensors are sensing devices used to collect temperature data. They are usually assembled into a finished product by assembling a temperature probe and wires. For the structure of existing temperature sensors, please refer to the Chinese patent publication document with announcement number CN208721286U and title "A Car Exhaust Temperature Sensor Sheath Device and Temperature Sensor". It describes that "the end of the fixed section 2 is connected to the handle 4, the handle 4 is connected to the temperature sensor wire 6, and the connection between the handle 4 and the temperature sensor wire 6 is provided with a waterproof structure 5". This method of assembling and fixing the wires to the temperature probe first has obvious defects. During product testing, the wires need to be plugged into the testing equipment. This process is done manually or by a robot, which is cumbersome and inefficient. Moreover, the wires need to be plugged in and tested one by one, which is difficult to meet the process requirements of batch testing. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a temperature sensor that can improve testing efficiency and facilitate batch testing, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A temperature sensor includes a sensor body, a fixing sleeve, and a lead wire. A temperature probe is provided at the front end of the sensor body, and a terminal assembly is provided at the rear end of the sensor body. The sensor body passes through the fixing sleeve and the two are sealed and fixed. An inner sleeve is formed at the rear end of the fixing sleeve, and the terminal assembly is located inside the inner sleeve. A plug sleeve is formed at the front end of the lead wire, and the plug sleeve is fitted outside the inner sleeve and the two are sealed and fitted together. A terminal base assembly is provided at the bottom of the plug sleeve, and the terminal assembly is plugged into and electrically connected to the terminal base assembly.

[0006] Preferably, the diameter of the temperature probe is smaller than the diameter of the sensor body.

[0007] Preferably, a conical transition portion is formed between the sensor body and the temperature probe.

[0008] Preferably, the fixing sleeve includes an outwardly protruding fixing retaining ring, and a locking retaining ring is provided on the front side of the fixing retaining ring. The locking retaining ring is sleeved on the outside of the fixing sleeve and the two are screwed together.

[0009] Preferably, the terminal assembly includes a first terminal and a second terminal, and the terminal socket assembly includes a first terminal socket and a second terminal socket, wherein the first terminal is correspondingly inserted into the first terminal socket and the second terminal is correspondingly inserted into the second terminal socket.

[0010] Preferably, the first terminal is a cylindrical terminal, and the first terminal holder is a circular hole terminal holder.

[0011] Preferably, the second terminal is a long strip terminal, and the second terminal holder is a strip-shaped hole terminal holder.

[0012] Preferably, a sealing sleeve is provided on the outer side of the sensor body, and the sealing sleeve is sandwiched between the sensor body and the fixing sleeve.

[0013] Preferably, the inner sleeve has multiple overflow grooves on its side wall. The overflow grooves are elongated and extend for a predetermined length along the circumference of the inner sleeve.

[0014] Preferably, the rear end of the sensor body has an outwardly protruding limiting flange, and the inner side of the fixing sleeve has a limiting step portion, with the limiting flange located behind the limiting step portion and the two abutting against each other.

[0015] In the temperature sensor disclosed in this utility model, the temperature probe is located at the front end of the sensor body, facilitating temperature sensing of the detection area. The fixing sleeve is fixed to the outside of the sensor body, sealing the connection between the two. The fixing sleeve provides support and fixation for the sensor body, making it easy to fix the sensor body onto the corresponding equipment. The rear end of the sensor body is provided with a terminal assembly capable of transmitting electrical signals. The terminal assembly is located inside the inner sleeve. During the production process, when the sensor body and the temperature probe are mass-produced, the terminal assembly can be directly connected using testing equipment to perform batch testing of the temperature probe's performance. Afterward, it is packaged with the lead wire. In practical applications, after the sensor body and the temperature probe pass through the preset mounting holes, they are fixed using the fixing sleeve, and then the insert is fitted onto the outside of the inner sleeve. Simultaneously, electrical connection is achieved based on the insertion and engagement of the terminal assembly and the terminal base assembly. Compared with the prior art, this utility model eliminates the need for manual insertion of the lead wire during testing, which not only improves testing efficiency but also facilitates batch testing. Attached Figure Description

[0016] Figure 1 Disassembly of the temperature sensor of this utility model Figure 1 ;

[0017] Figure 2 Disassembly of the temperature sensor of this utility model Figure 2 ;

[0018] Figure 3 This is a three-dimensional view of the temperature sensor of this utility model after assembly. Detailed Implementation

[0019] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0020] This utility model discloses a temperature sensor, combined with Figures 1 to 3 As shown, it includes a sensor body 1, a fixing sleeve 2, and a lead wire 3. The front end of the sensor body 1 is provided with a temperature probe 10, and the rear end of the sensor body 1 is provided with a terminal assembly 11. The sensor body 1 passes through the fixing sleeve 2 and the two are sealed and fixed. The rear end of the fixing sleeve 2 forms an inner sleeve 20. The terminal assembly 11 is located inside the inner sleeve 20. The front end of the lead wire 3 forms a plug sleeve 30. The plug sleeve 30 is fitted on the outside of the inner sleeve 20 and the two are sealed and fitted together. The bottom of the plug sleeve 30 is provided with a terminal base assembly 31. The terminal assembly 11 and the terminal base assembly 31 are plugged in and electrically connected.

[0021] In the above structure, the temperature probe 10 is located at the front end of the sensor body 1, facilitating temperature sensing of the detection area. The fixing sleeve 2 is fixed to the outside of the sensor body 1, sealing the connection between the two. The fixing sleeve 2 provides support and fixation for the sensor body 1, facilitating its installation on appropriate equipment. The rear end of the sensor body 1 is equipped with a terminal assembly 11 for transmitting electrical signals, located inside the inner sleeve 20. During production, once the sensor body 1 and the temperature probe 10 are mass-produced... When completed, the terminal assembly 11 can be directly connected to the testing equipment to conduct batch testing of the performance of the temperature probe 10. After that, it is packaged with the lead wire 3. When in use, after the sensor body 1 and the temperature probe 10 pass through the preset mounting holes, they are fixed by the fixing sleeve 2. Then, the insert 30 is fitted onto the outside of the inner sleeve 20. At the same time, the electrical connection is achieved based on the insertion and cooperation of the terminal assembly 11 and the terminal base assembly 31. Compared with the prior art, this utility model does not require manual insertion of the lead wire during the testing process, which not only improves the testing efficiency, but also facilitates batch testing.

[0022] As a preferred method, please refer to Figure 1 The diameter of the temperature probe 10 is smaller than the diameter of the sensor body 1. Specifically, the diameter of the temperature probe 10 is slightly smaller than that of the sensor body 1, and the solder joints of the terminal assembly 11 and the sensing element within the temperature probe 10 can be accommodated within the sensor body 1.

[0023] Furthermore, a conical transition portion 12 is formed between the sensor body 1 and the temperature probe 10. This conical transition portion 12 prevents the front end of the sensor body 1 from colliding with the mounting hole during temperature sensor installation, facilitating the insertion of the sensor body 1 and the temperature probe 10 into the mounting hole.

[0024] In this embodiment, the fixing sleeve 2 is installed and fixed by clamping, combined with Figure 1 and Figure 2 As shown, the fixing sleeve 2 includes an outwardly protruding fixing retaining ring 21, and a locking retaining ring 22 is provided on the front side of the fixing retaining ring 21. The locking retaining ring 22 is sleeved on the outside of the fixing sleeve 2 and the two are screwed together.

[0025] In the above structure, the inner ring of the locking retaining ring 22 has an internal thread, and the fixing sleeve 2 includes an external thread. The two are matched by a screw engagement method. Please refer to [link to relevant documentation]. Figure 3 The locking retaining ring 22 and the fixing retaining ring 21 have a clamping jaw 25, which is used to clamp the edge of the mounting hole. The locking retaining ring 22 and the fixing retaining ring 21 cooperate to clamp the edge of the mounting hole, thereby achieving reliable fixation. In practical applications, the outer wall of the locking retaining ring 22 has anti-slip texture, or the locking retaining ring 22 is a hexagonal nut.

[0026] Regarding the specific electrical connection method, in this embodiment, the terminal assembly 11 includes a first terminal 110 and a second terminal 111, and the terminal socket assembly 31 includes a first terminal socket 310 and a second terminal socket 311. The first terminal 110 is correspondingly inserted into the first terminal socket 310, and the second terminal 111 is correspondingly inserted into the second terminal socket 311.

[0027] In a preferred embodiment, the first terminal 110 is a cylindrical terminal, and the first terminal holder 310 is a circular hole terminal holder. The second terminal 111 is an elongated terminal, and the second terminal holder 311 is a strip-shaped hole terminal holder.

[0028] Please see Figure 1 and Figure 2 In this embodiment, the terminal assembly 11 is preferably composed of cylindrical terminals and elongated terminals, and the terminal base assembly 31 is composed of round hole terminal bases and elongated hole terminal bases. This shape setting mainly serves to prevent mistaken insertion and avoid misinsertion.

[0029] To achieve a tight fit, in this embodiment, a sealing sleeve 4 is fitted onto the outer side of the sensor body 1, and the sealing sleeve 4 is sandwiched between the sensor body 1 and the fixing sleeve 2. In practical applications, the sensor body 1 and the outer shell of the temperature probe 10 are integrally formed, specifically a stainless steel outer shell, the sealing sleeve 4 can be a soft rubber sealing sleeve, and the fixing sleeve 2 can be a hard plastic.

[0030] As a preferred embodiment, the inner sleeve 20 has multiple overflow grooves 23 on its sidewall. These overflow grooves 23 are elongated and extend a predetermined length circumferentially along the inner sleeve 20. In practical applications, the insert 30 and the inner sleeve 20 are adjustable. During actual use, sealant can be applied as needed, i.e., a small amount of sealant is applied to the inner sidewall of the insert 30. When the insert 30 is fitted onto the outer side of the inner sleeve 20, the two are bonded together by the sealant. Excess sealant can overflow into the overflow grooves 23, preventing the sealant from spreading towards the terminals and terminal blocks. This ensures reliable fixing between the fixing sleeve 2 and the lead wire 3, and also ensures reliable electrical connection between the terminal assembly 11 and the terminal block assembly 31.

[0031] In this embodiment, a limiting flange 13 protruding outward is formed at the rear end of the sensor body 1, and a limiting step portion 24 is formed on the inner side of the fixing sleeve 2. The limiting flange 13 is located behind the limiting step portion 24, and the two abut against each other. The matching relationship between the limiting flange 13 and the limiting step portion 24 helps to install the fixing sleeve 2 relative to the sensor body 1, thereby ensuring better product consistency.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A temperature sensor, characterized in that, The sensor includes a sensor body (1), a fixed sleeve (2), and a lead wire (3). The front end of the sensor body (1) is provided with a temperature probe (10), and the rear end of the sensor body (1) is provided with a terminal assembly (11). The sensor body (1) passes through the fixed sleeve (2) and the two are sealed and fixed. The rear end of the fixed sleeve (2) forms an inner sleeve (20). The terminal assembly (11) is located inside the inner sleeve (20). The front end of the lead wire (3) forms a plug sleeve (30). The plug sleeve (30) is fitted on the outside of the inner sleeve (20) and the two are sealed and fitted together. The bottom of the plug sleeve (30) is provided with a terminal base assembly (31). The terminal assembly (11) and the terminal base assembly (31) are plugged in and electrically connected.

2. The temperature sensor as described in claim 1, characterized in that, The diameter of the temperature probe (10) is smaller than the diameter of the sensor body (1).

3. The temperature sensor as described in claim 2, characterized in that, A conical transition section (12) is formed between the sensor body (1) and the temperature probe (10).

4. The temperature sensor as described in claim 1, characterized in that, The fixed sleeve (2) includes an outwardly protruding fixed retaining ring (21), and a locking retaining ring (22) is provided on the front side of the fixed retaining ring (21). The locking retaining ring (22) is sleeved on the outside of the fixed sleeve (2) and the two are screwed together.

5. The temperature sensor as described in claim 1, characterized in that, The terminal assembly (11) includes a first terminal (110) and a second terminal (111), and the terminal socket assembly (31) includes a first terminal socket (310) and a second terminal socket (311). The first terminal (110) is correspondingly inserted into the first terminal socket (310), and the second terminal (111) is correspondingly inserted into the second terminal socket (311).

6. The temperature sensor as described in claim 5, characterized in that, The first terminal (110) is a cylindrical terminal, and the first terminal block (310) is a circular hole terminal block.

7. The temperature sensor as described in claim 5, characterized in that, The second terminal (111) is a long strip terminal, and the second terminal block (311) is a strip hole terminal block.

8. The temperature sensor as described in claim 1, characterized in that, A sealing sleeve (4) is fitted on the outside of the sensor body (1), and the sealing sleeve (4) is sandwiched between the sensor body (1) and the fixed sleeve (2).

9. The temperature sensor as described in claim 1, characterized in that, The inner sleeve (20) has multiple glue overflow grooves (23) on its side wall. The glue overflow grooves (23) are elongated and extend for a predetermined length along the circumference of the inner sleeve (20).

10. The temperature sensor as claimed in claim 1, characterized in that, The sensor body (1) has an outwardly protruding limiting flange (13) at its rear end, and the fixed sleeve (2) has a limiting step (24) on its inner side. The limiting flange (13) is located behind the limiting step (24) and the two abut against each other.

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