阅读说明：本技术 环境检测装置及环境检测系统 (Environment detection device and environment detection system ) 是由 王修智 张单群 张毅涛 朱娜 王修亮 马超 于 2020-03-24 设计创作，主要内容包括：本公开提供一种环境检测装置及环境检测系统,涉及环境监测技术领域。该环境检测装置包括检测组件、防护支架和疏水疏油膜,其中：检测组件,固定于一安装面上；防护支架,设于检测组件远离安装面的一侧,并具有容纳检测组件的腔体,且其远离安装面的一侧具有露出检测组件的开口；疏水疏油膜,覆盖于开口,并具有供气流流通的微型孔。本公开的环境检测装置及环境检测系统可降低检测组件的维护成本,提高检测精度。(The utility model provides an environment detection device and environment detection system relates to environmental monitoring technical field. This environment detection device includes detection module, protective bracket and hydrophobic oleophobic membrane, wherein: the detection assembly is fixed on a mounting surface; the protection bracket is arranged on one side of the detection assembly, which is far away from the mounting surface, is provided with a cavity for accommodating the detection assembly, and an opening for exposing the detection assembly is arranged on one side of the protection bracket, which is far away from the mounting surface; and a water and oil repellent film covering the opening and having micro-holes for gas flow. The environment detection device and the environment detection system can reduce the maintenance cost of the detection assembly and improve the detection precision.)

1. An environment detection apparatus, comprising:

the detection assembly is fixed on a mounting surface;

the protection bracket is arranged on one side of the detection assembly, which is far away from the mounting surface, is provided with a cavity for accommodating the detection assembly, and is provided with an opening for exposing the detection assembly on one side of the protection bracket, which is far away from the mounting surface;

and a hydrophobic oleophobic membrane covering the opening and having micro-holes for gas flow.

2. The environmental sensor of claim 1, wherein the pores have a diameter of less than or equal to 5 μm.

3. The environmental detection device of claim 1, wherein the shield support comprises:

the protective cover is provided with an inwards sunken cavity, the detection assembly is clamped in the cavity, and one side of the cavity, which is far away from the mounting surface, is provided with an opening for exposing the detection assembly;

the supporting legs are uniformly distributed on one side, close to the mounting surface, of the protective cover and can penetrate through the mounting surface, so that the protective cover is in contact with the mounting surface.

4. The environment detection apparatus according to claim 1, further comprising:

the gasket surrounds the periphery of the opening, and the hydrophobic and oleophobic membrane covers one side of the gasket, which is far away from the opening;

and the first sealing ring is connected between the opening and the gasket in a sealing mode.

5. The environmental detection device of claim 1, wherein the protective bracket is sealingly connected to the mounting surface by a sealant.

6. An environmental detection system, comprising:

the environmental detection device of any one of claims 1-5;

the connecting pipe is arranged on one side, far away from the mounting surface, of the protective support, is communicated with the protective support through the opening and is used for conveying airflow to be detected to the detection assembly.

7. The environmental detection system of claim 6, further comprising:

the fixing seat is clamped at the periphery of the connecting pipe;

the sleeve is sleeved on the periphery of the environment detection device and is detachably connected with the fixed seat.

8. The environmental detection system of claim 7, wherein the sleeve comprises:

the cylinder body is provided with a first end and a second end, and the first end is arranged in the fixed seat in a penetrating way and is communicated with the connecting pipe;

the base covers the end part of the second end and is in threaded connection with the fixed seat.

9. The environmental detection system of claim 8, further comprising:

and the second sealing ring is connected between the cylinder and the base in a sealing manner.

10. The environmental detection system of claim 8, further comprising:

and the plurality of fastening pieces penetrate through the base and are positioned on the periphery of the barrel and in threaded connection with the fixed seat.

Technical Field

The disclosure relates to the technical field of environmental monitoring, in particular to an environment detection device and an environment detection system.

Background

With the development of economy and the improvement of the quality of life of people, more and more attention is paid to the monitoring of temperature and humidity in various industries of life and production. For example, in order to ensure the quality of the production environment, it is usually necessary to detect the temperature or humidity in a narrow space or a pipeline.

Currently, when monitoring temperature and humidity, it is usually necessary to insert a detection assembly into a narrow space or pipe containing a medium to be detected. However, the detection assembly has a large probe, and when the detection assembly is inserted into a detected medium, the cross-sectional state of a space or a pipeline is seriously changed, so that the state of the detected medium is influenced, the detection accuracy is reduced, and the detection assembly is exposed in the detected medium, so that condensation, dust adhesion and oil film contamination are easily generated on the surface of the detection assembly, regular cleaning is required, and the maintenance cost is high.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The purpose of the present disclosure is to overcome the deficiencies in the prior art, and provide an environment detection apparatus and an environment detection system, which can reduce the maintenance cost of the detection assembly and improve the detection precision.

According to an aspect of the present disclosure, there is provided an environment detection apparatus including:

the detection assembly is fixed on a mounting surface;

the protection bracket is arranged on one side of the detection assembly, which is far away from the mounting surface, is provided with a cavity for accommodating the detection assembly, and is provided with an opening for exposing the detection assembly on one side of the protection bracket, which is far away from the mounting surface;

and a hydrophobic oleophobic membrane covering the opening and having micro-holes for gas flow.

In an exemplary embodiment of the present disclosure, the pore size of the micro pores is less than or equal to 5 μm.

In an exemplary embodiment of the present disclosure, the shield stand includes:

the protective cover is provided with an inwards sunken cavity, the detection assembly is clamped in the cavity, and one side of the cavity, which is far away from the mounting surface, is provided with an opening for exposing the detection assembly;

the supporting legs are uniformly distributed on one side, close to the mounting surface, of the protective cover and can penetrate through the mounting surface, so that the protective cover is in contact with the mounting surface.

In an exemplary embodiment of the present disclosure, the environment detection apparatus further includes:

the gasket surrounds the periphery of the opening, and the hydrophobic and oleophobic membrane covers one side of the gasket, which is far away from the opening;

and the first sealing ring is connected between the opening and the gasket in a sealing mode.

In an exemplary embodiment of the present disclosure, the protective bracket is connected to the mounting surface in a sealing manner by a sealant.

According to an aspect of the present disclosure, there is provided an environment detection system including:

the environment detecting device according to any one of the above;

the connecting pipe is arranged on one side, far away from the mounting surface, of the protective support, is communicated with the protective support through the opening and is used for conveying airflow to be detected to the detection assembly.

In an exemplary embodiment of the present disclosure, the environment detection system further includes:

the fixing seat is clamped at the periphery of the connecting pipe;

the sleeve is sleeved on the periphery of the environment detection device and is detachably connected with the fixed seat.

In an exemplary embodiment of the present disclosure, the sleeve includes:

the cylinder body is provided with a first end and a second end, and the first end is arranged in the fixed seat in a penetrating way and is communicated with the connecting pipe;

the base covers the end part of the second end and is in threaded connection with the fixed seat.

In an exemplary embodiment of the present disclosure, the environment detection system further includes:

and the second sealing ring is connected between the cylinder and the base in a sealing manner.

In an exemplary embodiment of the present disclosure, the environment detection system further includes:

and the plurality of fastening pieces penetrate through the base and are positioned on the periphery of the barrel and in threaded connection with the fixed seat.

This disclosed environment detection device and environment detecting system can be fixed in the installation face with determine module one end, and in the cavity was located to the other end card, covered in the opening that the determine module was exposed to the protective bracket through hydrophobic oleophobic membrane, can make and wait to detect the air current and circulate to determine module through the miniature hole on hydrophobic oleophobic membrane to can avoid external impurity, large granule moisture and oil to get into, prevent impurity, oil and water condensation to adhere to determine module surface, reduce determine module's maintenance cost. Meanwhile, during detection, the detection assembly does not need to be directly inserted into the medium to be detected, so that the state of the medium to be detected cannot be changed, and the detection precision is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a block diagram of an environment detection system according to an embodiment of the present disclosure.

FIG. 2 is a cross-sectional view of an environmental detection system according to an embodiment of the present disclosure.

In the figure: 1. a detection component; 11. a mounting surface; 12. a wire; 2. a protective bracket; 21. a protective cover; 22. a support leg; 3. a hydrophobic oleophobic membrane; 4. a gasket; 5. a first seal ring; 6. a connecting pipe; 7. a fixed seat; 8. a sleeve; 81. a barrel; 82. a base; 83. a fixing hole; 84. a tightening piece; 9. and a second seal ring.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.

The embodiment of the present disclosure provides an environment detection apparatus, as shown in fig. 1, the environment detection apparatus may include a detection component 1, a protection bracket 2, and a hydrophobic and oleophobic membrane 3, wherein:

the detection assembly 1 can be fixed on a mounting surface 11;

the protective bracket 2 can be arranged on one side of the detection assembly 1 far away from the mounting surface 11, and can be provided with a cavity for accommodating the detection assembly 1, and one side of the protective bracket far away from the mounting surface 11 can be provided with an opening for exposing the detection assembly 1;

the hydrophobic and oleophobic membrane 3 can cover the opening and can have microscopic holes for the gas flow to pass through.

This disclosed environment detection device can be fixed in installation face 11 with detection component 1 one end, and in the cavity was located to the other end card, cover in protection support 2 through hydrophobic oleophobic membrane 3 and expose detection component 1's opening, can make and wait to detect the air current and circulate to detection component 1 through the miniature hole on hydrophobic oleophobic membrane 3 to can avoid external impurity, large granule moisture and oil to get into, prevent impurity, oil and water condensation to adhere to detection component 1 surface, reduce detection component 1's maintenance cost. Meanwhile, during detection, the detection assembly 1 does not need to be directly inserted into the medium to be detected, so that the state of the medium to be detected cannot be changed, and the detection precision is improved.

The following describes each part of the environment detection device according to the embodiment of the present disclosure in detail:

the detection assembly 1 can be fixed on a mounting surface 11, and the mounting surface 11 can be a plate-shaped structure, which can be circular or rectangular, of course, can also be other shapes, and is not limited herein; the material may be metal, alloy or stainless steel, or may be other materials, such as plastic, which are not listed here. The detecting element 1 can be fixed on the mounting plane, for example, the detecting element 1 can be fixed on the mounting surface 11 by welding, bonding, clipping, screwing, etc., of course, the detecting element 1 can also be fixed on the mounting surface 11 by other methods, which are not listed here. The mounting surface 11 may be a printed circuit board, and the printed circuit board may be connected to an external power source through a wire 12 to supply power to the detection assembly 1; meanwhile, the printed circuit board can be communicated with a signal receiving device or a signal transmitting device through a transmission lead 12, so that the signal transmission between the detection assembly 1 and an external device is realized.

The detecting component 1 can be used to detect environmental parameters, which can be environmental temperature or environmental humidity, and certainly can be other environmental parameters, and is not limited herein, and correspondingly, the detecting component 1 can be a temperature sensor for detecting environmental temperature or a humidity sensor for detecting environmental humidity, or a temperature and humidity sensor integrated on the same hardware for detecting environmental temperature and environmental humidity at the same time, and certainly, when the environmental parameters are other parameters, the detecting component 1 can also be other sensors corresponding to the environmental parameters, and is not limited herein. In an embodiment, the detecting assembly 1 may be a temperature and humidity sensing detecting unit produced by an integrated micro device manufacturing technology, and compared with the existing detecting assembly 1, the detecting assembly 1 has a small size, low power consumption and a wide application range, and can meet the miniaturization design requirements of a detecting device and a detecting system.

The protection bracket 2 can be arranged on one side of the detection assembly 1 away from the mounting surface 11 and can be in contact connection with the mounting surface 11. The protective bracket 2 may be a block-shaped or plate-shaped structure, and the material thereof may be metal, alloy, stainless steel or plastic, of course, the protective bracket 2 may also be made of other materials, which is not limited herein. The protective bracket 2 may have a cavity for accommodating the detection assembly 1, and the detection assembly 1 may be covered between the protective bracket 2 and the mounting surface 11 through the cavity. The cavity may be a groove formed by inward recessing of the side of the protective bracket 2 close to the mounting surface 11, and the groove may be integrally formed on the protective bracket 2, or may be a groove-shaped structure formed by a grooving process, which is not particularly limited herein.

Protection support 2 can with 11 sealing connection of installation face to prevent external moisture or impurity entering cavity, avoid detecting component 1 and external moisture or direct contact such as impurity, prevent that detecting component 1 surface from attaching to dust or deposit condensation, reduce the maintenance cost. For example, a sealant may be applied to the surface of the protective bracket 2 close to the mounting surface 11, and the protective bracket 2 and the mounting surface 11 are connected in a sealing manner by the sealant. One side of the protection bracket 2, which is far away from the mounting surface 11, can be provided with an opening which exposes the detection component 1, so that the medium to be detected can flow into the cavity through the opening, and further, various parameters of the medium to be detected can be tested through the detection component 1 in the cavity. The medium to be detected may be a gas, a liquid or other state medium, and is not particularly limited herein.

In an embodiment, the shield support 2 may comprise a shield 21 and a plurality of legs 22, wherein:

the protective cover 21 may be disposed on a side of the detecting assembly 1 away from the mounting surface 11, and may be a plate-shaped structure, and the shape thereof may be a circle, an ellipse, a square or an irregular figure, which is not limited herein. One side that the protection casing 21 is close to installation face 11 can have by the inside sunken cavity that forms in surface, the size of cavity can with determine module 1's size phase-match to in locating determine module 1 card in the cavity, avoid determine module 1 and external impurity contact, prevent determine module 1 surface adhesion dust, reduce the maintenance cost. One side of the cavity, which is far away from the mounting surface 11, can be provided with an opening communicated with the cavity, and the opening can be used for exposing the detection assembly 1, so that the medium to be detected is in contact with the detection assembly 1 through the opening, and the detection assembly 1 is convenient to test various parameters of the medium to be detected. The opening may be circular, oval or rectangular, and the shape and size of the opening are not particularly limited as long as the detection assembly 1 is exposed.

The support legs 22 may have a column or plate structure, and may be disposed on a side of the protection cover 21 close to the mounting surface 11, and may be used to fixedly connect the protection cover 21 with the mounting surface 11. The number of the legs 22 may be plural, and the plural legs 22 may be uniformly distributed on one side of the shield 21 close to the mounting surface 11 and may be disposed around the cavity, for example, the number of the legs 22 may be 2, 3, 4, 5 or 6, or of course, other numbers may be also used, which are not listed here. Each stabilizer blade 22 all can wear to locate installation face 11 to evenly distributed is in determine module 1's periphery, so that cavity and determine module 1 alignment joint, and can guarantee protection casing 21 and the laminating of installation face 11. For example, the number of the legs 22 may be 4, and the 4 legs 22 may be columns parallel to each other.

The support leg 22 and the protective hood 21 can be fixed together by welding, bonding, clipping, or screwing, and the like, and of course, the support leg 22 and the protective hood 21 can also be in an integral structure, and the fixing manner of the support leg 22 and the protective hood 21 is not particularly limited.

The hydrophobic and oleophobic membrane 3 can cover the opening of the protective support 2 exposed out of the detection component 1, and the size of the hydrophobic and oleophobic membrane can be larger than that of the opening so as to completely cover the opening, can be used for blocking external large-particle moisture and oil from entering the cavity and preventing the oil and water from being attached to the surface of the detection component 1, so that the detection component 1 is in direct contact with a medium to be detected, and the detection precision is improved. The hydrophobic and oleophobic membrane 3 can be made of a polymer material with hydrophobic and oleophobic properties, for example, it can be made of polytetrafluoroethylene or thermoplastic polyester material, but of course, other materials with better hydrophobic and oleophobic properties can be used, which is not listed here. The hydrophobic and oleophobic membrane 3 can have micro-pores, which can be used for gas flow, and can block the macromolecular moisture and oil outside, and prevent the macromolecular moisture and oil from entering the cavity, for example, the pore size of the micro-pores can be less than or equal to 5 μm, for example, it can be 1 μm, 2 μm, 3 μm, 4 μm or 5 μm, and of course, other pore sizes can be used, which is not limited herein, as long as the macromolecular moisture and oil can be blocked outside the cavity.

In an embodiment, the environment detecting device of the present disclosure may further include a gasket 4 and a first sealing ring 5, wherein:

the washer 4 may be a ring-shaped structure and may surround the periphery of the opening, the washer 4 may be a flat washer, a corrugated washer, a tooth-shaped washer, or the like, and the washer 4 may be an elastic material such as rubber, or may be metal, asbestos, or other materials, which is not limited herein. The hydrophobic and oleophobic membrane 3 can be attached to the side of the gasket 4 away from the opening, and can be fixedly connected with the opening through the gasket 4, so that the hydrophobic and oleophobic membrane 3 is fixed on the opening.

The gasket 4 and the opening are in a sealing fit, specifically, the first sealing ring 5 can be hermetically connected between the opening and the gasket 4 and surround the opening for a circle, and the first sealing ring 5 can be clamped between the opening and the gasket 4, so that the gasket 4 and the opening are sealed, and external water drops, water vapor and dust are further prevented from entering the cavity and the mounting surface 11, and further the printed circuit board is polluted, corroded or short-circuited. The material of the first sealing ring 5 may be an elastic material such as rubber, silica gel, etc., which are not listed here.

The embodiments of the present disclosure further provide an environment detection system, which includes the environment detection device and the connection pipe 6 of the above embodiments, and the specific content of the environment detection device may refer to the environment detection device in any of the above embodiments, which is not described herein again.

The connecting pipe 6 can be arranged on one side of the protective bracket 2 far away from the mounting surface 11, can be communicated with the protective bracket 2 through the opening, and can be used for conveying airflow to be detected to the detection assembly 1.

This disclosed environment detecting system, accessible connecting pipe 6 conveys to detect the air current to detection component 1, and at this in-process, the air current that detects can flow to detection component 1 through the miniature hole on hydrophobic oleophobic membrane 3 to detect the parameter information of medium through detection component 1 test. In the process, the detection assembly 1 does not need to be directly inserted into the medium to be detected, so that the state of the medium to be detected is not changed, and the detection precision is improved.

The connecting pipe 6 can be arranged on one side, far away from the mounting surface 11, of the protective support 2, can be communicated with the protective support 2 through the opening, and can be used for conveying airflow to be detected to the detection assembly 1. For example, the opening of protective bracket 2 can communicate with the lateral wall of connecting pipe 6 to detect subassembly 1 and provide simultaneously to detecting through the both ends of connecting pipe 6 and detect the medium, improve the supply rate of air current, guarantee the air current supply quantity, avoid detecting the accuracy reduction because of detecting that the medium flow is not enough. The connection pipe 6 may be a plastic pipe or a metal pipe, and is not particularly limited herein. The gas flow to be detected may be water vapor having a certain temperature, and may be a gas flow containing other substances, which is not particularly limited herein.

In order to fix connecting pipe 6 and environment detection device, avoid connecting pipe 6 and environment detection device because of becoming flexible bad contact in the use, the environment detection system of this disclosure can also include fixing base 7 and sleeve 8, and fixing base 7 can be cubic, cuboid, cylinder or other shapes, and no longer enumerate here one by one. Fixing base 7 is inside to have the cavity that both ends link up, and fixing base 7 is passed through to connecting pipe 6 accessible cavity to locate connecting pipe 6 card in this cavity, promptly: the fixing piece can be clamped on the periphery of the connecting pipe 6 to fix the connecting pipe 6, so that the connecting pipe 6 is prevented from being bent, and the service life of the connecting pipe 6 is prolonged.

The sleeve 8 can be sleeved on the periphery of the environment detection device and can be detachably connected with the fixing seat 7, and when the environment detection device is used, the environment detection device can be fixed on the fixing seat 7, so that the environment detection device is convenient to fix on a wall surface.

The sleeve 8 may include a cylinder 81 and a base 82, the cylinder 81 may have a first end and a second end penetrating therethrough, the first end may be inserted into the fixing seat 7 and may communicate with the connection pipe 6, and the second end may extend to a side away from the connection pipe 6. The cylinder 81 may be cylindrical or prismatic, and the cross section thereof may be circular, elliptical or polygonal, and the material thereof may be metal, alloy or other material, and the shape and material of the cylinder 81 are not particularly limited herein.

In one embodiment, as shown in fig. 2, an opening in the shield bracket 2 on the side away from the mounting surface 11 may communicate with the wall surface of the connection pipe 6. For example, the connection pipe 6 may have a connection port connected to the opening of the protection bracket 2, the size of the connection port may match the size of the opening of the protection bracket 2, and the connection port may be hermetically connected to the opening of the protection bracket 2 by a sealant, at this time, the hydrophobic and oleophobic membrane 3 may be attached to the inner wall of the connection pipe 6 in a conformal manner, and may cover the opening of the protection bracket 2 and the connection port of the connection port.

The connection port may have a hole-shaped structure, and may be a stepped hole, a straight hole, or a threaded hole, which is not particularly limited herein. The environment detecting device may have one opening or a plurality of openings, and correspondingly, one connecting pipe 6 may have one or a plurality of connecting ports, as long as the number of openings on the environment detecting device is equal to the number of openings in the connecting pipe 6, and the environment detecting device is arranged by wearing.

The base 82 may cover the end of the second end of the cylinder 81, and may have a plate-shaped structure, which may be circular, rectangular or irregular, and may be made of metal, alloy or stainless steel, and the like, and the material and shape of the base 82 are not particularly limited. The seat 82 can be in sealing engagement with the sleeve 8, for example: the environmental detection system of the embodiment of the present disclosure may further include a second sealing ring 9, the second sealing ring 9 may be sealably connected between the cylinder 81 and the base 82, for example, it may be embedded in the end surface of the second end of the sleeve 8 and surround the periphery of the second end, and the second sealing ring 9 may be clamped between the base 82 and the end surface of the second end, thereby sealing the base 82 and the cylinder 81, preventing water drops and impurities from entering the sleeve 8, avoiding the environmental detection device from being contaminated or corroded, and prolonging the service life of the environmental detection device. The material of the second sealing ring 9 may be an elastic material such as rubber, silica gel, etc., which are not listed here.

It should be noted that the base 82 and the sleeve 8 may also be connected by welding, bonding, clamping, or screwing, and the like, and of course, the base 82 and the sleeve 8 may also be in an integral structure, and the fixing manner of the base 82 and the sleeve 8 is not particularly limited herein.

The environmental detection system of the embodiment of the present disclosure further includes a fastening member 84, which can be disposed on the base 82, can be located on the outer periphery of the cylinder 81, and can be in threaded connection with the fixing base 7. For example, the base 82 may have fixing holes 83, each fixing hole 83 may be located at the periphery of the cylinder 81, the fastening member 84 may pass through the fixing hole 83 to be connected with the fixing base 7 through a screw, and the base 82 and the fixing base 7 may be fixed by the fastening member 84, so as to fix the environment detection device between the base 82 and the fixing base 7, and prevent each component of the environment detection device from loosening or falling off during detection. The number of the tightening pieces 84 may be plural, for example, it may be 2, 3, 4 or 5, of course, other numbers are also possible, and there is no particular limitation.

The fastening member 84 may be a strip, which may have threads thereon, and may be connected with the fixing hole 83 and the fixing base 7 by threads, and the material thereof may be metal, alloy or other material, as long as it is a hard structure. The tightening member 84 may be a bolt, for example, but may be other members.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.