Sensor convenient to disassemble

Abstract

The utility model relates to the technical field of sensors, and discloses a sensor convenient to disassemble, which comprises a sensor shell, a sensor main body and a detection head, a wire between the sensor main body and the detection head is fixedly sleeved with a positioning rod, and the positioning rod is sleeved with a fixing sleeve. A fixing sleeve is arranged in the sensor body, one end, close to the sensor shell, of the fixing sleeve is fixedly provided with an external thread pipe, the outer side of the external thread pipe is sleeved with an internal thread cylinder in a threaded mode, and the internal thread cylinder is fixed to the inner wall of the sensor shell. The sensor with good sealing performance can be detached conveniently, the problem that when an existing sensor with good sealing performance needs to be maintained and detached, operation is strenuous and tedious is solved, operation is more convenient and labor-saving when the sensor is maintained, and meanwhile the sealing performance in the sensor is fully guaranteed.

Description

Technical Field

[0001] The utility model application relates to the technical field of sensors, in particular to a sensor which is easy to disassemble. Background Art

[0002] A sensor is a detection device that can sense the information being measured and convert the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control. It is generally composed of four parts: sensitive elements, conversion elements, conversion circuits and auxiliary power supplies. It can be divided into thermal sensors, photosensitive elements, gas sensors, force sensors, magnetic sensors, humidity sensors, sound sensors, radiation sensitive elements, color sensitive elements and taste sensitive elements according to its basic sensing function.

[0003] Since the sensor needs to be in the object to be measured when in use, for objects to be measured in more complex environments, it is necessary to ensure sufficient sealing inside the sensor when in use. However, existing sensors with better sealing properties are very inconvenient to disassemble during maintenance, and the fixing method of multiple bolts makes the disassembly operation more laborious and cumbersome. Summary of the invention

[0004] In order to solve the problem that the existing sensors with good sealing performance are laborious and complicated to operate when they need to be repaired and disassembled, the utility model provides a sensor that is easy to disassemble to solve the above problem.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sensor that is easy to disassemble comprises a sensor housing, a sensor main body and a detection head, a positioning rod is provided on a fixing sleeve on a wire between the sensor main body and the detection head, and a fixing sleeve is provided on the positioning rod, an externally threaded tube is fixed to one end of the fixing sleeve close to the sensor housing, and an internally threaded tube is provided on the outer threaded sleeve of the externally threaded tube, the internally threaded tube is fixed to the inner wall of the sensor housing, a sealing pad is fixed to the outer surface of the positioning rod on the inner side of the fixing sleeve, a sealing rubber pad is glued and fixed to one side of the fixing sleeve close to the sensor housing, and the sealing rubber pad is clamped in the sensor housing.

[0007] Furthermore, a positioning block is fixed at one end of the sensor housing, a rectangular groove cooperating with the positioning block is formed on the side of the sensor body away from the detection head, and a sealing groove cooperating with the sealing pad is formed on the side of the sensor housing away from the positioning block.

[0008] Furthermore, a limiting rod is symmetrically fixed on one side of the external threaded tube close to the sensor body, a limiting sleeve is fixed on one side of the sensor body close to the detection head, and the two limiting rods are slidably inserted inside the limiting sleeve.

[0009] Furthermore, a reinforcement sleeve is provided on the outer side of the fixing sleeve, and the reinforcement sleeve is threadedly connected to the outer surface of the positioning rod, the side of the reinforcement sleeve away from the detection head abuts against the side of the sensor housing, and the distance between the sealing pad and the reinforcement sleeve is equal to the wall thickness of the fixing sleeve.

[0010] Furthermore, the inner ring diameter of the fixing sleeve is larger than the outer ring diameter of the sealing pad, and a sealing rubber pad is glued and fixed to one side of the sealing pad close to the fixing sleeve.

[0011] Furthermore, the limiting sleeve is configured to be in a ring shape that matches the sensor body, and a side of the limiting sleeve close to the detection head is provided with a ring-shaped positioning groove that matches the limiting rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, a composite plug-in connection method is used to ensure the sealing of the connection between the sensor body and the sensor housing while ensuring the convenience during disassembly, thereby solving the problem that the existing sensors with good sealing performance are laborious and cumbersome to operate when they need to be repaired and disassembled, making the sensor more convenient and labor-saving to operate during maintenance, while fully ensuring the sealing inside the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 is a front view schematic diagram of a sensor structure according to an embodiment of the present application;

[0016] Figure 2 yes Figure 1 A schematic front cross-sectional view of the sensor structure in the illustrated embodiment;

[0017] Figure 3 yes Figure 1 A schematic front cross-sectional view of the sensor main structure in the illustrated embodiment;

[0018] Figure 4 yes Figure 1 A schematic front cross-sectional view of the sensor housing structure in the illustrated embodiment.

[0019] The meanings of the reference numerals in the figure are: 1. sensor housing; 2. sensor body; 3. detection head; 4. positioning rod; 5. positioning block; 6. internal threaded tube; 7. external threaded tube; 8. fixing sleeve; 9. sealing plate; 10. sealing rubber pad; 11. limiting rod; 12. limiting sleeve; 13. reinforcement sleeve. DETAILED DESCRIPTION

[0020] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Reference Figure 1 , Figure 2 and Figure 3 A sensor that is easy to disassemble comprises a sensor housing 1, a sensor body 2 and a detection head 3. A positioning block 5 is fixed at one end inside the sensor housing 1. A rectangular groove matching the positioning block 5 is provided on the side of the sensor body 2 away from the detection head 3. A sealing groove matching the sealing rubber pad 10 is provided on the side of the sensor housing 1 away from the positioning block 5. A positioning rod 4 is fixedly sleeved on the wire between the sensor body 2 and the detection head 3, and a fixing sleeve 8 is sleeved on the positioning rod 4. An external threaded tube 7 is fixed to the end of the fixing sleeve 8 close to the sensor housing 1, and an internal threaded tube 6 is sleeved on the outer threaded sleeve of the external threaded tube 7. The internal threaded tube 6 is fixed on the inner wall of the sensor housing 1. A sealing pad 9 is fixed to the outer surface of the positioning rod 4 on the inner side of the fixing sleeve 8. The inner ring diameter of the fixing sleeve 8 is larger than the outer ring diameter of the sealing pad 9. A sealing rubber pad is glued and fixed to the side of the sealing pad 9 close to the fixing sleeve 8. A sealing rubber pad 10 is glued and fixed to the side of the fixing sleeve 8 close to the sensor housing 1, and the sealing rubber pad 10 is clamped in the sensor housing 1.

[0022] Specifically, when the sensor housing 1 and the sensor body 2 need to be disassembled, the reinforcement sleeve 13 is twisted to release the fixation between the reinforcement sleeve 13 and the positioning rod 4, and the reinforcement sleeve 13 can be separated from the fixing sleeve 8. Then the fixing sleeve 8 is rotated to drive the external threaded tube 7 to rotate until it is separated from the internal threaded tube 6, and the internal threaded tube 6 can be pulled out from the inside of the sensor housing 1. At this time, the fixation between the fixing sleeve 8 and the positioning rod 4 is released, and the fixing sleeve 8, the sealing pad 9 and the limiting rod 11 are directly separated from the limiting sleeve 12.

[0023] As an optimization solution, Figure 3 and Figure 4As shown, a limiting rod 11 is symmetrically fixed on one side of the external threaded tube 7 close to the sensor body 2, and a limiting sleeve 12 is fixed on one side of the sensor body 2 close to the detection head 3. The limiting sleeve 12 is set to be a ring shape that matches the sensor body 2, and a ring-shaped positioning groove that matches the limiting rod 11 is opened on the side of the limiting sleeve 12 close to the detection head 3. The two limiting rods 11 are slidably inserted in the limiting sleeve 12, and a reinforcement sleeve 13 is provided on the outer side of the fixed sleeve 8, and the reinforcement sleeve 13 is threadedly connected to the outer surface of the positioning rod 4, and the side of the reinforcement sleeve 13 away from the detection head 3 abuts against the side of the sensor housing 1, and the distance between the sealing pad 9 and the reinforcement sleeve 13 is equal to the wall thickness of the fixed sleeve 8.

[0024] Specifically, during installation, the sensor body 2 is inserted into the sensor housing 1, and the sensor body 2 is placed on the positioning block 5. The fixing sleeve 8 is screwed so that the fixing sleeve 8 drives the external threaded tube 7 to rotate until it is fixed with the internal threaded tube 6. When fixed, the sealing rubber gasket 10 is driven to engage with the sealing groove. The reinforcement sleeve 13 is then placed on the positioning rod 4 and screwed until it abuts against the side of the sensor housing 1. At this time, the positioning rod 4 is clamped and fixed with the fixing sleeve 8 in cooperation with the sealing pad 9 and the reinforcement sleeve 13.

[0025] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0026] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sensor that is easy to disassemble, comprising a sensor housing (1), a sensor body (2) and a detection head (3), characterized in that: A positioning rod (4) is fixedly sleeved on the wire between the sensor body (2) and the detection head (3), and a fixing sleeve (8) is sleeved on the positioning rod (4); an external threaded tube (7) is fixed to one end of the fixing sleeve (8) close to the sensor housing (1), and an internal threaded tube (6) is sleeved on the outer thread of the external threaded tube (7); the internal threaded tube (6) is fixed to the inner wall of the sensor housing (1); a sealing pad (9) is fixed to the outer surface of the positioning rod (4) on the inner side of the fixing sleeve (8); a sealing rubber pad (10) is glued and fixed to one side of the fixing sleeve (8) close to the sensor housing (1), and the sealing rubber pad (10) is snapped into the inside of the sensor housing (1).

2. The easily disassembled sensor according to claim 1, characterized in that: A positioning block (5) is fixed at one end of the interior of the sensor housing (1); a rectangular groove cooperating with the positioning block (5) is provided on the side of the sensor body (2) away from the detection head (3); and a sealing groove cooperating with the sealing rubber pad (10) is provided on the side of the sensor housing (1) away from the positioning block (5).

3. The easily disassembled sensor according to claim 1, characterized in that: A limiting rod (11) is symmetrically fixed on one side of the external threaded tube (7) close to the sensor body (2), and a limiting sleeve (12) is fixed on one side of the sensor body (2) close to the detection head (3), and the two limiting rods (11) are slidably inserted inside the limiting sleeve (12).

4. The easily disassembled sensor according to claim 1, characterized in that: A reinforcing sleeve (13) is provided on the outer side of the fixing sleeve (8), and the reinforcing sleeve (13) is threadedly connected to the outer surface of the positioning rod (4); the side of the reinforcing sleeve (13) away from the detection head (3) abuts against the side of the sensor housing (1); and the distance between the sealing pad (9) and the reinforcing sleeve (13) is equal to the wall thickness of the fixing sleeve (8).

5. The easily disassembled sensor according to claim 1, characterized in that: The inner diameter of the fixing sleeve (8) is larger than the outer diameter of the sealing pad (9), and a sealing pad is glued and fixed on one side of the sealing pad (9) close to the fixing sleeve (8).

6. The easily disassembled sensor according to claim 3, characterized in that: The limiting sleeve (12) is arranged in a ring shape to match the sensor body (2), and a ring-shaped positioning groove to match the limiting rod (11) is provided on a side of the limiting sleeve (12) close to the detection head (3).

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