KR101554231B1 - system for sensing vehicle - Google Patents

Abstract

A second coupling part protrudes from the upper surface of a disk part. A first protrusion part protrudes from the lower surface of a cover part. A screw thread is configured so that the outer surface of a first coupling part is coupled to the inner surface of the second coupling part. Accordingly, coupling and decoupling of the cover part and the disk part are simply carried out as the thread is coupled and decoupled. An installation part where electric components are installed in the first coupling part are installed to block the introduction of foreign substances and moisture into the electric components as the first coupling part, the second coupling part, and a support part are installed on the outside of the installation part during the installation. The cover part is rotated only by a coupling device in a specific shape, which has been manufactured beforehand. Therefore, the coupling and decoupling can be easily carried out, and the theft of electric parts can be efficiently prevented at the same time.

Description

A system for sensing vehicle

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vehicle detection system, and more particularly, to a vehicle detection system which is configured to simplify assembly and disassembly and efficiently prevent theft of an electric component installed therein, .

As the number of vehicles and large buildings increases, the number of large parking lots has increased. Such a large parking lot has the advantage of providing a large amount of parking space in a large space such as the ground and the underground. However, It is difficult for the driver of the vehicle to perceive the parking status of the driver, which causes the driver of the vehicle to waste unnecessary time.

Accordingly, various researches are being conducted on a parking control system for guiding and guiding a vehicle entering a parking lot to a parking space capable of parking, or providing parking status and parking related information to a driver in order to increase the convenience of use.

The vehicle detection device is an essential component of the parking control system, and is a device for detecting whether the vehicle is parked on a parking surface or on a ceiling of a parking space, wherein the vehicle detection information detected by the vehicle detection device is a parking lot The performance of how accurately the vehicle sensing apparatus detects the vehicle is directly related to the performance of the parking control system since it is utilized in generating the position information of the parking space which is most necessary for the driver of the vehicle entering the vehicle.

A conventional loop type vehicle sensing apparatus has a groove formed in the bottom surface of a parking space, and a loop coil embedded in the groove outputs a high frequency signal, and then changes the inductance of the loop coil according to the high frequency signal output And to detect the vehicle.

However, the conventional loop-type vehicle sensing apparatus is not limited to the above-described conventional arts, in which a cutting operation for forming grooves on the road at the time of installation, a landing operation for embedding the loop coil into the groove formed by the cutting operation, Therefore, the installation is very troublesome, and the cause of the road breakage is provided. Also, the connection line drawn out from the loop coil is easily disconnected, causing frequent breakdowns.

In addition, since the conventional loop type vehicle sensing apparatus is operated in a state where the loop coil is buried in the road, it is difficult to inspect and replace the apparatus.

Accordingly, there has been studied a vehicle sensing device which is installed inside a parking space or on a ceiling of a parking space by installing electric parts such as a sensor, an electric circuit, and an electric device, And it is widely used in a parking control system since it has an advantage of easy inspection and replacement of equipment.

1 is a perspective view showing a vehicle presence / absence checking apparatus disclosed in Korean Patent No. 10-0796920 (entitled " Vehicle presence / absence checking apparatus in a parking lot and a parking management system including the same).

1 includes an infrared sensor unit 203, an electric power supply unit, and a circuit board. The infrared sensor unit 203 is mounted on one surface of the infrared sensor unit 203, And a housing 201 configured to be exposed and bolted to the ceiling or floor of the parking space.

In the related art 200 configured as described above, the housing 201 is provided with the electric parts such as the infrared sensor unit 203, the power supply unit, and the circuit board, and the housing 201 is hermetically sealed. So that it is prevented from flowing into the inner part 201, thereby preventing a component failure and damage due to foreign matter and moisture.

However, the conventional art 200 has a disadvantage in that it is difficult to inspect and replace the equipment when the housing 201 is integrally formed, because it is difficult to open the inside of the housing 201.

In order to overcome such a problem, a housing has been widely used to open and close the housing, so that it is easy to inspect and replace the equipment. However, the conventional opening and closing type vehicle sensing device uses a known coupling device such as a driver So that the electric parts are often stolen.

In order to prevent theft of the vehicle sensing apparatus by installing the CCTV according to the surge of theft detection rate of the vehicle detection apparatus, however, it is practically difficult to efficiently monitor the wide space with a small manpower while simultaneously consuming the human resources .

1) Install electric elements such as sensors inside the housing, seal the housing to prevent moisture damage and foreign matter from entering into the housing, and 2) check the equipment periodically for accurate parking information generation. And 3) the cover is opened and closed only by a specific person such as an administrator, whereby it is possible to effectively prevent theft of the sensor, the power supply means, the electric circuit, and the electronic device provided inside the housing, It is urgently required to study a vehicle sensing apparatus which can prevent the vehicle from being detected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a vehicle detection system in which a disk part and a lid part are assembled and disassembled by a thread fastening method to facilitate equipment inspection and replacement.

According to another aspect of the present invention, there is provided a lid comprising: a lid having a plurality of insertion grooves formed on an upper surface of the lid, the lid having a shape corresponding to a shape of each of the insertion grooves; Which can be assembled and disassembled more easily, and at the same time, theft of internal electric parts can be effectively prevented.

In addition, another object of the present invention is to provide a method of manufacturing an electronic part by installing a first installation part, a second installation part and a second support part outside the installation part where the electric parts are installed, The second mounting portion, and the second supporting portion, thereby effectively preventing equipment failure and damage due to foreign matter and moisture.

Another object of the present invention is to provide an air conditioner which is configured such that an upper surface of a lid portion and a rim portion of a disc portion provided on an upper surface of the lid portion at the time of assembling are curved so that moisture generated by the external environment and condensation can be easily drained And a vehicle sensing system including the vehicle sensing system.

Further, another object of the present invention is to provide a vehicle detection system in which a disc is coupled to a parking surface (floor surface) through a bonding means without using a separate joining member, thereby reducing road breakage and simplifying installation.

According to an aspect of the present invention, there is provided a vehicle detection system including a vehicle sensing device for sensing whether a vehicle is parked in a parking zone, the vehicle sensing device comprising: a sensor; A plate portion having a hollow cylindrical second coupling portion having a thread on an inner circumferential surface thereof, the plate portion being provided at the center of one surface, and the other surface being coupled to a bottom surface of the parking space; And a lid portion provided at the center of the inner surface, wherein the lid portion and the plate portion are integrally formed with the first and second fastening portions, Wherein the first fastening portion is formed in a hollow cylindrical shape and has a cylindrical portion provided on an inner surface of the lid portion, and a cylindrical portion formed in a shape of a polyhedron having an opening at one side thereof, wherein the thread portion of the fastening portion and the thread of the second fastening portion are fastened and disassembled, And the sensor is installed in the inside of the cover, and the connecting part of the side surfaces connected to the opening is coupled to the inner circumferential surface of the cylindrical part, and one end is formed of a plate member coupled to the inner surface of the lid part, And a support plate coupled to the inner circumferential surface of the cylindrical portion and the side surface of the mounting portion.

Further, in the present invention, it is preferable that the plate portion is formed as a curved surface which is formed on the curved surface of the lid when assembled.

In the present invention, the plate portion may include a second fitting surface formed in a band shape and having an outer end protruding from a curved surface formed on a rim, wherein the lid portion has a first fitting surface, which is provided on the second fitting surface, .

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Further, in the present invention, the vehicle detection system may further include a coupling device for rotating and rotating the lid part, wherein the lid part is formed with insertion grooves on the outer surface from the outer surface to the inner side, and the coupling device is formed of a plate material; A handle coupled to a side wall of the body; Fixing rods formed in a bar shape and vertically installed from one surface of the body; And protruding insertion portions coupled to one side of the fixing rods facing the center of the body when viewed in a plan view and inserted into the insertion grooves.

Also, in the present invention, the insertion grooves are formed in different shapes, and each of the projecting insertion portions of the coupling device is formed to correspond to the shape of the corresponding insertion groove.

In the present invention, the insertion grooves may include a first groove formed in a rectangular parallelepiped shape inside the lid unit and adjacent to a rim of the lid unit, and a second groove formed adjacent to the center of the lid unit, Wherein the protruding insertion portions are formed in a rectangular parallelepiped shape and are inserted into the first groove and connected to the first insertion portion and inserted into the corresponding second groove, And a second insertion portion.

According to the present invention having the above-mentioned solution, the first fastening portion is formed on the upper surface of the disc portion and the first protruding portion is formed on the lower surface of the lid portion so that threads are formed on the outer circumferential surface of the first fastening portion and the inner circumferential surface of the second fastening portion, And the disassembly and disassembly of the disc portion and the lid portion can be simplified according to the release.

According to the present invention, the first fastening portion is provided with an installation portion in which the electric parts are installed, and the first fastening portion, the second fastening portion, and the support portion are provided outside the installation portion at the time of assembling to prevent foreign matter and moisture from flowing into the electric parts Thus, it is possible to effectively prevent the breakdown and damage of the electric parts.

According to the present invention, the upper surface of the lid portion is formed as a curved surface, and the rim of the plate portion is formed as a curved surface to be led to the upper surface of the lid portion, so that the generated moisture easily drains to the ground along the curved surface.

Further, according to the present invention, since the upper surface of the lid portion is formed in a gentle curved surface so as not to interfere with the walking of the pedestrian, the pedestrian moving in the installation place can be effectively prevented from slipping or falling over the lid portion protruding upward from the ground do.

In addition, according to the present invention, since the first fastening portion, the second fastening portion, the support portions, and the support plates support the space formed inside the assembly during assembly, the inner pressure can be increased to firmly support the cover even when the cover is pressed by a vehicle tire or the like.

Further, according to the present invention, since the lid part is configured to be rotated only by the coupling device of the specific shape manufactured by the machine, the assembly and disassembly can be made easier and the theft of the internal electric parts can be effectively prevented.

1 is a perspective view showing a vehicle presence / absence checking apparatus disclosed in Korean Patent No. 10-0796920 (entitled " Vehicle presence / absence checking apparatus in a parking lot and a parking management system including the same).
2 is an exploded perspective view showing a vehicle detection system according to an embodiment of the present invention.
3 is an exploded perspective view showing the vehicle sensing apparatus of FIG.
Figure 4 is a side view of Figure 3;
5 is a side view showing the disc portion of Fig.
Fig. 6 is a plan view of Fig. 5. Fig.
7 is a side sectional view showing the lid portion of Fig.
Fig. 8 is a plan view of Fig. 7. Fig.
9 is a plan view showing the second fastening portion of Fig.
10 is a perspective view showing a coupling device for assembling and disassembling the vehicle sensing device of the present invention.
11 is an exemplary view for explaining the protrusion insertion portion of Fig.
Fig. 12 is an exemplary view showing a state in which the coupling device of Fig. 10 is coupled to the lid of Fig. 4;

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

2 is an exploded perspective view showing a vehicle detection system in which the present invention is an embodiment.

The vehicle detection system 1 of FIG. 2 includes a disk unit 5 coupled to the floor or ceiling of the parking compartment and a lid unit 3 coupled to the disk unit 5 to determine whether the vehicle is parked in the parking compartment And a coupling device 100 for assembling and disassembling the lid part 3 from the disk part 5 by rotating or reversing the lid part 3 of the vehicle sensing device 2 .

Fig. 3 is an exploded perspective view showing the vehicle sensing apparatus of Fig. 2, and Fig. 4 is a side view of Fig. 3. Fig.

The vehicle sensing apparatus 2 shown in Figs. 3 and 4 is a device installed on the bottom surface of the parking lot to detect whether the vehicle is parked in the parking space.

In addition, the vehicle sensing apparatus 2 includes a disk unit 5 formed in a disk shape and coupled to a bottom surface thereof, and an electric part such as a sensor, an electric circuit, and an electric element provided on the other surface, And a lid part (3) coupled to the lid part (5). In this case, the direction from the disc portion 5 to the lid portion 3 is referred to as an upper direction, and the direction from the lid portion 3 to the disc portion 5 is referred to as a lower portion.

In addition, the vehicle sensing apparatus 2 is configured such that the disc portion 5 and the lid portion 3 are fastened and disassembled in a threaded manner, thereby facilitating replacement and inspection of parts.

In addition, the vehicle sensing apparatus 2 is configured such that the disk unit 5 and the lid unit 3 are assembled and disassembled only by the coupling apparatus 100 of FIG. 10 described later, thereby facilitating assembly and disassembly, It is possible to effectively prevent theft of the electric parts installed in the vehicle.

Fig. 5 is a side view showing the disk portion of Fig. 4, and Fig. 6 is a plan view of Fig. 5. Fig.

5 and 6 is formed of a circular plate material, and the lower surface 53 is formed flat and is coupled to the bottom surface (paper surface) by means of an adhesive such as epoxy. For the sake of convenience, the disk unit 5 is attached to the bottom surface by means of the adhesive means. However, the disk unit 5 is coupled to the bottom surface through a known engaging member such as a bolt ≪ / RTI >

The circular plate portion 5 is formed on the rim of the upper surface 51 and has a curved surface 511 curved downward toward the outer side from the center of the circle and a curved surface 511 projecting from the upper surface, Shaped second fitting surface 513 and a second coupling portion 515 formed at the center of the upper surface and spaced from the second fitting surface 513.

The curved surface 511 is formed on the rim of the upper surface of the circular plate portion 5 and curved downward toward the outer side from the center of the circle when viewed from the plane, So that even if water is generated due to condensation or an external environment, moisture is not introduced into the inside but is easily drained to the outside.

The second fitting surface 513 is formed in a circular strip shape and protrudes outward from the upper surface of the disc portion 5 and has an outer end formed to be connected to the curved surface 511.

The second fitting surface 513 is brought into contact with the first fitting surface 339 of the lid unit 3, which will be described later, when the lid unit 3 is engaged, thereby preventing foreign matter and moisture from flowing into the second fitting surface.

The second fastening portion 515 is formed in a hollow cylindrical shape and is disposed at the center of the upper surface of the disk portion 5, and forms a space 517 therein.

The second fastening portion 515 has an inner diameter larger than the outer diameter of the first fastening portion 333 of the lid portion 3 of FIG. 7 to be described later so that the first fastening portion 515 of the lid portion 3, Is inserted into the inner space 517.

The thread 516 is formed on the inner circumferential surface of the second fastening portion 515 and the screw thread 516 is fastened and disengaged to the thread 338 of the first fastening portion 333 of the lid portion 3, The disk portion 5 and the lid portion 3 are assembled and disassembled according to the thread fastening and disengagement of the fastening portion 333 and the second fastening portions 515. [

Fig. 7 is a side sectional view showing the lid portion of Fig. 3, Fig. 8 is a plan view of Fig. 7, and Fig. 9 is a plan view of the second fastening portion of Fig.

7 and 8, electric parts such as a sensor, an electric circuit, and an electric element are installed in the inside of the lid part 3, and the lid part 5 of Fig. 5 is coupled and disassembled by the thread fastening method.

In addition, since the inner and outer surfaces 31 and 33 of the lid part 3 are formed in a semispherical shape having a diameter smaller than that of the disk part 5, the moisture generated by the external environment such as rain, .

The cover portion 3 is formed such that the insertion grooves 311, 311 ', and 311' 'are spaced apart from each other on the same circle on the outer surface 31 from the outer surface 31 to the inside. At this time, protruding insertion portions 107 of the coupling device 100 of FIG. 10 to be described later are inserted into the insertion grooves 311, 311 'and 311' ', and a force is applied from the rotational force of the coupling device 100 It is preferable to be spaced apart from the center of the outer surface 31 so as to be easily transferred, and be formed adjacent to the rim.

In the present invention, three insert grooves 311, 311 ', and 311 "are formed for convenience of explanation, but the number of insert grooves is not limited thereto.

The insertion grooves 311, 311 'and 311' 'have a first groove 313 formed adjacent to the rim of the outer surface 31 and a second groove 313 formed on the outer surface 31, And the first grooves 313 of the insertion grooves 311, 311 ', and 311' 'are formed in the same shape and size The second grooves 315 of each of the insertion grooves 311, 311 ', and 311' 'are formed in different shapes. At this time, the first groove 313 is formed in a rectangular parallelepiped shape so that the projection insertion portion 107 of the coupling device 100 is firmly supported by the vertical walls of the first groove 313.

For example, the second grooves 315 of the insertion grooves 311, 311 ', and 311' 'may have different shapes such as a triangular shape, a semi-cylindrical shape, an inverted triangle shape, or the like.

That is, the lid portion 3 of the present invention is formed such that the second grooves 315 of the insertion grooves 311, 311 ', and 311 "are formed in different shapes, The lid part 3 is formed in the shape of each of the insertion grooves 311, 311 ', and 311' 'by being coupled with the shape of each of the projection insertion parts 107 of the coupling device 100, It is possible to assemble and disassemble the disc portion 5 only by the coupling device 100 having the corresponding protrusion insertion portion 107 so that the inner opening of the vehicle sensing device 2 is provided with the coupling device 100 It is possible to prevent the internal electric parts from being stolen by only one specific person.

A first accommodating surface 339 formed in a circular strip shape is formed on the rim of the inner surface 33 of the lid unit 3. The first accommodating surface 339 is formed as a flat surface, And the second fitting surface 513 of the portion 5 is accommodated.

In other words, the lid portion 3 has a lower outer diameter that is the same as the outer diameter of the first receiving surface 339 of the disk portion 5, so that the moisture generated on the outer surface 31 of the lid portion 3 forms the outer surface 31 So that it is easily drained to the lower part.

9, the lid part 3 is provided with a hollow cylindrical support part 331 provided at the center of the inner surface 33 and a support part 331 provided at the center of the inner surface 33 and installed inward from the support part 331 And a cylindrical first fastening portion 333 in which electronic components such as a sensor, a battery, an electric circuit, and an electric element are installed. At this time, the first fastening portion 333 is formed so that its outer side surface is spaced from the inner side surface of the support portion 331, so that a predetermined space is formed between the first fastening portion 333 and the support portion 331, The second fastening portion 515 of the disk portion 5 is inserted.

The supporting portion 331 is formed in a hollow cylindrical shape and is provided at the center of the inner surface 33 of the lid portion 3. When the disk portion 5 is engaged, the end portion of the supporting portion 331 is brought into contact with the upper surface 51 of the disk portion 5, The lid portion 3 is supported so that the lid portion 3 is not collapsed when the lid portion 3 is pressed by a tire or the like.

The first fastening portion 333 is formed in a cylindrical shape and is provided at the center of the inner surface 33 of the lid portion 3 and is provided inside the support portion 331 and spaced apart from the support portion 331.

The first fastening portion 333 is formed in a hollow cylindrical shape and has a cylindrical portion 334 vertically installed on the inner surface 33 of the lid portion 3 and a cylindrical portion 334 formed of a polyhedron partially opened. And a support plate 336 formed of a plate member and having both ends connected to the mounting portion 335 and the inner circumferential surface of the cylindrical portion 334.

The cylindrical portion 334 is formed in a hollow cylindrical shape and protrudes from the inner surface 33 of the lid portion 3 and is formed to be spaced inward from the support portion 331.

The screw 338 is formed on the outer surface of the cylindrical portion 334 and the thread 338 is fastened to the thread of the second fastening portion 515 of the disk portion 5 to form the disk portion 5 and the lid portion 3 are assembled and disassembled.

The mounting portion 335 is formed as a polyhedron with a part thereof opened and is provided at an end portion of the cylindrical portion 334. At this time, the opening of the mounting portion 335 is formed to be connected to the end of the cylindrical portion 334.

The mounting portion 335 is provided with electrical parts such as a sensor, a battery, a circuit board, and an electric element as an internal space. At this time, the mounting portion 335 may have various shapes corresponding to the shape and quantity of the electric parts.

In addition, the mounting portion 335 is coupled to the inner side surface of the cylindrical portion 334, which is a joint portion of side surfaces connected to the opening portion, so that a space is formed between the side surface and the inner side surface of the cylindrical portion. Accordingly, a plurality of support plates 336 are provided between the inner surface of the cylindrical portion 334 and the side surface of the mounting portion 335, thereby increasing the internal pressure of the lid portion 3.

FIG. 10 is a perspective view showing a coupling device for assembling and disassembling the vehicle sensing device of the present invention, FIG. 11 is an exemplary view for explaining the protrusion insertion portion of FIG. 10, And Fig.

10 is an apparatus for assembling and disassembling the lid portion 3 of the vehicle sensing apparatus 2, which is one embodiment of the present invention, from the disk portion 5. Fig.

The coupling device 100 includes a body 101 formed of a disk having a thickness and an area, a handle 103 coupled to one side wall of the body 101, The rods 105 and the insertion rods 311 and 311 'of the cover 3 of FIG. 7 are coupled to one side of the fixing rod 105 which faces the center of the body 101 when viewed in plan. ) And 311 '', respectively.

The body 101 is formed in a disk shape having an area and a thickness, and a handle 103 is coupled to one side wall.

The fixing rods 105 are formed in a rod shape having a length and are vertically installed on one surface of the body 101. At this time, the fixing rods 105 are installed to be spaced from each other on the same arc of one side of the body 101.

The protrusion insertion portions 107 include a first insertion portion 171 coupled to one side of the fixing rod 105 facing the center of the body 101 when viewed in plan and a second insertion portion 171 connected to the first insertion portion 171 And a second inserting portion 173 to be inserted into the second inserting portion.

10 and 11, the first insertion portions 171 are formed in a rectangular parallelepiped shape, and one end portion thereof is coupled to the fixing rod 105. When the lid portion 3 is assembled, ), 311 ', and 311' ', respectively. That is, the first insertion portions 171 of the protrusion insertion portion 107 are formed in the same shape and size.

In addition, the second insertion portions 173 are formed in a column or polyhedron shape having different shapes, and one end is coupled to the first insertion portion 171.

The second insertion portions 173 are formed to correspond to the shapes of the second grooves 315 of the insertion grooves 311, 311 ', and 311' 'of the lid unit 3, 3) corresponding to the second grooves 315 when assembled.

Since the second insertion portions 173 are formed in different shapes and correspond to the second grooves 315 of the lid portion 3 in the coupling device 100, (3) can be easily assembled and disassembled, and at the same time, the lid part (3) can be assembled and disassembled only by the coupling device (100), thereby effectively preventing the internal electrical parts from being stolen.

1: vehicle detecting device 3: lid part 5: disk part
100: coupling device 101: body 103: handle
105: fixing rod 107: projection insertion portion 31: upper surface
33: lower surface 311: insertion groove 313: first groove
315: second groove 331: support portion 333: first fastening portion
334: cylindrical portion 335: mounting portion 336:
339: first receiving surface 511: curved surface 513: second receiving surface
515:

Claims (7)

CLAIMS What is claimed is: 1. A vehicle detection system comprising a vehicle sensing device for sensing whether a vehicle is parked in a parking compartment, comprising:
The vehicle sensing device
sensor;
A plate portion having a hollow cylindrical second coupling portion having a thread on an inner circumferential surface thereof, the plate portion being provided at the center of one surface, and the other surface being coupled to a bottom surface of the parking space;
And a lid portion provided at the center of the inner surface, wherein the lid portion and the plate portion are integrally formed with the first and second fastening portions, The thread of the fastening portion and the thread of the second fastening portion are assembled and disassembled as fastened and disengaged,
Wherein the first fastening portion is formed in a hollow cylindrical shape and has a cylindrical portion provided on an inner surface of the lid portion and a polyhedron having one side opened to provide the sensor therein, And a support plate coupled to an inner circumferential surface of the cylindrical portion and a side surface of the installation portion. The vehicle according to claim 1, Detection system. The vehicle detection system according to claim 1, wherein the plate portion is formed as a curved surface that is provided on a curved surface of the lid portion when assembled. [3] The apparatus according to claim 2, wherein the plate portion includes a second accommodating surface formed in a band shape and having an outer end protruding from a curved surface formed on a rim,
Wherein the lid part is formed on a lower end surface of the first accommodating surface, the first accommodating surface being in contact with the second accommodating surface when the lid is assembled. delete The vehicle monitoring system according to any one of claims 1 to 3, wherein the vehicle sensing system further comprises a coupling device for rotating and rotating the lid part, wherein the lid part is formed with insertion grooves on the outer surface from the outer surface to the inner side,
The coupling device
A body formed of a plate material;
A handle coupled to a side wall of the body;
Fixing rods formed in a bar shape and vertically installed from one surface of the body;
And protrusion insertion portions coupled to one side of the fixing rods facing the center of the body when viewed in a plan view and inserted into the insertion grooves. The vehicle detection system according to claim 5, wherein the insertion grooves are formed in different shapes, and each of the projecting insertion portions of the coupling device is formed corresponding to the shape of the corresponding insertion groove. [7] The apparatus of claim 6, wherein the insertion grooves have a first groove formed in a rectangular parallelepiped shape inside the lid unit and adjacent to an edge of the lid unit, and a second groove formed adjacent to the center of the lid unit, And a second groove formed in a different shape,
Wherein the projection insertion portions comprise a first insertion portion formed in a rectangular parallelepiped shape and inserted into the first groove and a second insertion portion connected to the first insertion portion and inserted into a corresponding second groove, Detection system.

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