Protection structure of sensor

Abstract

The utility model discloses a protection structure of a sensor, which comprises a cylindrical shell, the shell is internally provided with a sensor, the periphery of the upper end of the shell is provided with an external thread and a first groove, the shell is detachably connected with a gas detector through the external thread, and the lower end of the shell is provided with a second groove; the protective cover is detachably arranged on the outer side of the lower end of the shell in a sleeving manner; the first O-shaped ring is arranged in the first groove; and the second O-shaped ring is arranged in the second groove. Through application of the protection structure of the sensor, double protection of the sensor is realized through double-layer combination of the protection cover and the shell, secondary damage to the sensor caused by deformation of the shell after the sensor falls off is avoided, and the protection structure of the sensor is high in stability and small in overall weight when being installed on a gas detector. Normal work of the sensor is effectively guaranteed, and the design cost and the production cost are both low.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a protective structure for a sensor. Background Technology

[0002] Sensors are one of the core components of gas detectors. They can sense the composition and concentration of gases in the environment, convert this gas information into signals, and transmit them to the gas detector. However, sensors are very susceptible to being dropped and damaged during use.

[0003] In existing technologies, sensors typically have only a single-layer shell structure to protect their core components. This single-layer shell structure is generally made of resin or metal. However, existing shell structures often offer poor stability in protecting the sensor, easily deforming upon impact and causing secondary damage. Secondly, existing shell structures are also prone to detaching, thus losing their protective effect on the sensor. Furthermore, when the shell structure is integrated with a gas detector, the sealing performance is poor, and installation is inconvenient. Utility Model Content

[0004] In view of this, and to solve the above problems, the purpose of this utility model is to provide a protective structure for a sensor, comprising:

[0005] The housing is cylindrical in shape, and a sensor is disposed inside the housing. The outer periphery of the upper end of the housing is provided with an external thread and a first groove. The housing is detachably connected to a gas detector through the external thread. The lower end of the housing is provided with a second groove.

[0006] A protective cover, which is detachably fitted onto the outer side of the lower end of the outer shell;

[0007] A first O-ring is disposed in the first groove and is clamped between the outer shell and the gas detector;

[0008] The second O-ring is disposed in the second groove and is clamped between the outer shell and the protective cover.

[0009] In another preferred embodiment, both the first groove and the second groove are arranged in annular structure.

[0010] In another preferred embodiment, a mounting base is formed protruding from the outer side of the gas detector. The mounting base is arranged in a ring structure and has a stepped hole with an internal thread. The outer shell and the mounting base are connected by the threaded engagement of the internal thread and the external thread.

[0011] In another preferred embodiment, the housing includes: a first part and a second part, the first part being connected to the upper end of the second part, the outer side of the first part being provided with the external thread, the first groove being formed at the connection between the first part and the second part, the second groove being formed at the lower end of the second part, and the outer diameter of the first part being smaller than the outer diameter of the second part.

[0012] In another preferred embodiment, the stepped hole includes a large inner diameter portion and a small inner diameter portion connected to each other, the small inner diameter portion being provided with the internal thread, the first portion extending into the small inner diameter portion and the second portion extending into the large inner diameter portion.

[0013] In another preferred embodiment, the inner wall of the protective cover is provided with a third groove, which is directly opposite to the second groove. The third groove is arranged in a ring structure, and the outer side of the second O-ring extends into the third groove.

[0014] In another preferred embodiment, a limiting hole is provided on the protective cover for a limiting member to extend into. One end of the limiting member is disposed against the outer side of the outer shell, and one end of the limiting member is in contact with the second O-ring.

[0015] In another preferred embodiment, the limiting member is a locking screw, one end of which has an outer periphery in contact with the side of the second O-ring closest to the first portion.

[0016] In another preferred embodiment, the outer shell is made of carbon fiber reinforced polycarbonate resin material.

[0017] Because this utility model adopts the above-mentioned technical solution, it has the following positive effects compared with the prior art:

[0018] By applying this utility model, a protective structure for a sensor is provided. The double-layer combination of the protective cover and the outer shell provides dual protection for the sensor, preventing secondary damage to the sensor caused by deformation of the outer shell after the sensor is dropped. It also provides high stability when installed on a gas detector, and the overall weight is small, effectively ensuring the normal operation of the sensor. Furthermore, the design and production costs are low. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the housing of a sensor protective structure according to the present invention;

[0020] Figure 2 This is a cross-sectional view of the outer shell of a sensor protective structure according to the present invention;

[0021] Figure 3 This is a schematic diagram showing the connection between the protective structure of a sensor and a gas detector according to the present invention.

[0022] Figure 4 This is a cross-sectional view of the protective structure of a sensor according to this utility model when connected to a gas detector.

[0023] In the attached image:

[0024] 100. Housing; 110. First part; 111. External thread; 112. First groove; 120. Second part; 121. Second groove; 200. Sensor; 300. Gas detector; 310. Mounting base; 400. Protective cover; 410. Limiting hole; 500. First O-ring; 600. Second O-ring. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0028] like Figures 1 to 4The diagram illustrates a protective structure for a sensor 200 according to a preferred embodiment, comprising: a housing 100, which is cylindrical in shape, with the sensor 200 disposed inside the housing 100; an external thread 111 and a first groove 112 on the outer periphery of the upper end of the housing 100; the housing 100 being detachably connected to a gas detector 300 via the external thread 111; and a second groove 121 on the lower end of the housing 100; a protective cover 400, which is detachably fitted onto the outer side of the lower end of the housing 100; a first O-ring 500, which is disposed within the first groove 112 and sandwiched between the housing 100 and the gas detector 300; and a second O-ring 600, which is disposed within the second groove 121 and sandwiched between the housing 100 and the protective cover 400. Furthermore, the outer shell 100 serves as the main part protecting the sensor 200, forming a wrap-around protection for the sensor 200. The outer shell 100 also forms the connection basis for the gas detector 300 and the protective cover 400. With the setting of the first O-ring 500 and the second O-ring 600, the connection between the outer shell 100, the gas detector 300 and the protective cover 400 is more stable.

[0029] Furthermore, in a preferred embodiment, both the first groove 112 and the second groove 121 are arranged in annular structure.

[0030] Furthermore, as a preferred embodiment, a mounting base 310 is formed protruding on the outer side of the gas detector 300. The mounting base 310 is arranged in a ring structure and has a stepped hole. An internal thread is provided in the stepped hole. The housing 100 and the mounting base 310 are connected by the threaded engagement of the internal thread and the external thread 111.

[0031] Furthermore, as a preferred embodiment, the housing 100 includes: a first part 110 and a second part 120, the upper ends of the first part 110 and the second part 120 are connected, the outer side of the first part 110 is provided with an external thread 111, a first groove 112 is formed at the connection between the first part 110 and the second part 120, a second groove 121 is formed at the lower end of the second part 120, and the outer diameter of the first part 110 is smaller than the outer diameter of the second part 120.

[0032] Furthermore, as a preferred embodiment, the stepped hole includes: a large inner diameter portion and a small inner diameter portion connected to each other, the small inner diameter portion being provided with an internal thread, a first portion 110 extending into the small inner diameter portion, and a second portion 120 extending into the large inner diameter portion.

[0033] Furthermore, as a preferred embodiment, the first O-ring 500 is clamped between the housing 100 and the stepped hole.

[0034] Furthermore, as a preferred embodiment, the inner wall of the protective cover 400 is provided with a third groove, which is directly opposite to the second groove 121. The third groove is arranged in a ring structure, and the outer side of the second O-ring 600 extends into the third groove.

[0035] Furthermore, in a preferred embodiment, the second O-ring 600 is clamped between the second groove 121 and the third groove. Further, the inner side of the second O-ring 600 is disposed within the second groove 121.

[0036] Furthermore, as a preferred embodiment, a limiting hole 410 is provided on the protective cover 400. The limiting hole 410 is for a limiting member to extend into. One end of the limiting member is disposed against the outer side of the outer shell 100, and one end of the limiting member is in contact with the second O-ring 600.

[0037] Furthermore, in a preferred embodiment, the limiting member is a locking screw, with the outer periphery of one end of the locking screw contacting the side of the second O-ring 600 near the first portion 110. Furthermore, the movement of the protective cover 400 is limited by the cooperation between the limiting member and the second O-ring 600, such as... Figure 4 As shown, the limiting member and the second O-ring 600 cooperate to limit the top-to-bottom displacement of the protective cover 400 on the housing 100.

[0038] Furthermore, as a preferred embodiment, when the protective cover 400 is connected to the housing 100, one end of the protective cover 400 abuts against the mounting base 310.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model.

[0040] Based on the above, this utility model also has the following embodiments:

[0041] In a further embodiment of the present invention, the first O-ring 500 is used to increase the sealing between the outer shell 100 and the mounting base 310, and the second O-ring 600 is used to increase the sealing between the protective cover 400 and the outer shell 100. In addition, the first O-ring 500 and the second O-ring 600 are also used to prevent the outer shell 100 and the protective cover 400 from falling off, respectively.

[0042] In a further embodiment of this utility model, both the first O-ring 500 and the second O-ring 600 are made of a relatively hard material.

[0043] Furthermore, as a preferred embodiment, the housing 100 is made of carbon fiber reinforced polycarbonate resin material. Furthermore, the carbon fiber content within the housing 100 can be adjusted according to the needs of different gas detectors 300.

[0044] In a further embodiment of this utility model, the protective cover 400 is preferably made of stainless steel or aluminum alloy.

[0045] In a further embodiment of this utility model, a corresponding coating may be added to the surface of the protective cover 400 according to the requirements of the gas detector 300's operating environment.

[0046] The specific installation steps for the sensor protection structure of this utility model are as follows:

[0047] The operator first places the sensor 200 inside the housing 100; then, the operator screws the housing 100 into the mounting base 310 through the external thread 111 on the housing 100; next, the operator puts the protective cover 400 on the outside of the housing 100, so that one end of the protective cover 400 abuts against the mounting base 310, while the second O-ring 600 is clamped between the second groove 121 and the third groove; finally, the operator screws the locking screw into the limiting hole 410 to further prevent the protective cover 400 from falling off the housing 100.

[0048] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective structure for a sensor, characterized in that, include: The housing is cylindrical in shape, and a sensor is disposed inside the housing. The outer periphery of the upper end of the housing is provided with an external thread and a first groove. The housing is detachably connected to a gas detector through the external thread. The lower end of the housing is provided with a second groove. A protective cover, which is detachably fitted onto the outer side of the lower end of the outer shell; A first O-ring is disposed in the first groove and is clamped between the outer shell and the gas detector; The second O-ring is disposed in the second groove and is clamped between the outer shell and the protective cover.

2. The protective structure for the sensor according to claim 1, characterized in that, Both the first groove and the second groove are arranged in annular structure.

3. The protective structure for the sensor according to claim 1, characterized in that, A mounting base is formed protruding from the outer side of the gas detector. The mounting base has a ring structure and a stepped hole with an internal thread. The outer shell and the mounting base are connected by the threaded engagement of the internal thread and the external thread.

4. The protective structure for the sensor according to claim 3, characterized in that, The outer shell includes: a first part and a second part, the first part being connected to the upper end of the second part, the outer side of the first part being provided with the external thread, the first groove being formed at the connection between the first part and the second part, the second groove being formed at the lower end of the second part, and the outer diameter of the first part being smaller than the outer diameter of the second part.

5. The protective structure for the sensor according to claim 4, characterized in that, The stepped hole includes a large inner diameter portion and a small inner diameter portion that are connected to each other. The small inner diameter portion is provided with the internal thread. The first part extends into the small inner diameter portion and the second part extends into the large inner diameter portion.

6. The protective structure for the sensor according to claim 4, characterized in that, The inner wall of the protective cover is provided with a third groove, which is directly opposite to the second groove. The third groove is arranged in a ring structure, and the outer side of the second O-ring extends into the third groove.

7. The protective structure for the sensor according to claim 6, characterized in that, A limiting hole is provided on the protective cover for a limiting member to extend into. One end of the limiting member is disposed against the outer side of the outer shell, and one end of the limiting member is in contact with the second O-ring.

8. The protective structure for the sensor according to claim 7, characterized in that, The limiting component is a locking screw, and the outer periphery of one end of the locking screw contacts the side of the second O-ring closest to the first part.

9. The protective structure for the sensor according to claim 1, characterized in that, The outer shell is made of carbon fiber reinforced polycarbonate resin.

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