CN208986957U - A kind of CAU test fixture - Google Patents
A kind of CAU test fixture Download PDFInfo
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- CN208986957U CN208986957U CN201822196148.3U CN201822196148U CN208986957U CN 208986957 U CN208986957 U CN 208986957U CN 201822196148 U CN201822196148 U CN 201822196148U CN 208986957 U CN208986957 U CN 208986957U
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Abstract
The utility model discloses a kind of CAU test fixtures, when doing CAU test, can easily adjust the distance between CAU and transponder by the tooling.Above-mentioned CAU test fixture includes longitudinal rail, the first pallet, the second pallet and locating piece.Wherein: longitudinal rail is provided with multiple (preferably four), the central axis and horizontal plane of multiple longitudinal rails；The top of longitudinal rail is arranged in first pallet, for placing detection antenna；Second pallet guide rail can be erected on longitudinal rail with longitudinal sliding along longitudinal direction, for placing transponder；Locating piece is used to the second pallet being located in longitudinal rail.Also, each component in the CAU test fixture is non-metallic material, does not influence product test performance.
Description
Technical field
The utility model relates to railway signal technology field, in particular to a kind of CAU test fixture.
Background technique
Radiation emission test: the Radiated disturbance field strength that measuring device passes through spatial.
ATP: time interval between to trains system, also known as train protection system, English name are Automatic Train
Protection, abbreviation ATP.
CAU: transponder detects antenna, for reading transponder message information, sends BTM information.
ATP system includes the equipment such as mainframe, BTM, CAU, DMI.Wherein, CAU is installed on train bottom, for send/
BTM and transponder information are received, is powerful device of the work in high frequency.
When carrying out ATP system product radiation emission test, all devices are required to be placed in darkroom in system, measurement
The external radiation value of whole system.Also, when carrying out CAU test, due to the distance between CAU and transponder, relative position
Etc. factors can influence ATP system integrally external radiation value, so in order to by CAU and transponder to whole system influence drop
To minimum, need to inhibit the transmission power of CAU, but can guarantee it is normal read transponder message, to need constantly adjustment CAU
The distance between transponder, to find optimal test position.During adjustment, distance is required not between CAU and transponder
Can be too close, and cannot have metal object in a certain range of the bottom CAU.
In the prior art, the special tooling that do not test for CAU can only use desk, wooden unit, plastic foam etc. interim
The material and device pieced together are stacked, and build test environment temporarily to carry out correlation test.In test process, it is not easy to very much
Adjust the distance between CAU and transponder.
Therefore, when doing CAU test, how the distance between CAU and transponder are easily adjusted, is current this field skill
Art personnel technical problem urgently to be resolved.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of CAU test fixtures, when doing CAU test, by this
Tooling can easily adjust the distance between CAU and transponder.
To achieve the above object, the utility model provides the following technical solutions:
A kind of CAU test fixture, each component in the CAU test fixture are non-metallic material, also, the CAU
Test fixture includes:
The longitudinal rail of central axis and horizontal plane；
For placing the first pallet of detection antenna, the top of the longitudinal rail is arranged in first pallet；
For placing the second pallet of transponder, second pallet can be erected at longitudinal sliding along the longitudinal rail
On the longitudinal rail；
Locating piece for being located in second pallet on the longitudinal rail.
Preferably, in above-mentioned CAU test fixture, the longitudinal rail includes parallel to each other and is located at rectangle quadrangle
First longitudinal direction guide rail, second longitudinal direction guide rail, third longitudinal rail and the 4th longitudinal rail of position.
It preferably, further include parallel to each other and horizontally disposed first X direction guiding rail and in above-mentioned CAU test fixture
Two X direction guiding rails, in which:
The both ends of the first X direction guiding rail are slidably connected with the first longitudinal direction guide rail, the second longitudinal direction guide rail respectively,
To enable the first X direction guiding rail height adjustable；
The both ends of the 2nd X direction guiding rail are slidably connected with the third longitudinal rail, the 4th longitudinal rail respectively,
To enable the 2nd X direction guiding rail height adjustable；
Two parallel sides of second pallet connect with the first X direction guiding rail, the 2nd X direction guiding rail sliding respectively
It connects.
It preferably, further include parallel to each other and horizontally disposed first Y-direction guide rail and in above-mentioned CAU test fixture
Two Y-direction guide rails, in which:
The both ends of first Y-direction guide rail are connect with the first X direction guiding rail, the 2nd X direction guiding rail respectively, and can be with
Second pallet slides in the first X direction guiding rail and the 2nd X direction guiding rail；
The both ends of second Y-direction guide rail are connect with the first X direction guiding rail, the 2nd X direction guiding rail respectively, and can be with
Second pallet is slided in the first X direction guiding rail and the 2nd X direction guiding rail；
Two parallel sides of second pallet connect with first Y-direction guide rail, second Y-direction guide rail sliding respectively
It connects.
Preferably, in above-mentioned CAU test fixture, graduated scale is provided on the longitudinal rail；
And/or at least one of the first X direction guiding rail and the 2nd X direction guiding rail, it is provided with graduated scale；
And/or at least one of first Y-direction guide rail and second Y-direction guide rail, it is provided with graduated scale.
Preferably, in above-mentioned CAU test fixture, the first X direction guiding rail, the 2nd X direction guiding rail, the first Y
At least two idler wheels that can be rolled along sliding rail extending direction, the idler wheel are respectively arranged in direction guiding rail, second Y-direction guide rail
Central axis be arranged on the side of second pallet.
Preferably, in above-mentioned CAU test fixture, the first X direction guiding rail, the 2nd X direction guiding rail, the first Y
Direction guiding rail, second Y-direction guide rail and the idler wheel are plastic material.
Preferably, in above-mentioned CAU test fixture, the first X direction guiding rail and the 2nd X direction guiding rail are that length can
The telescopic rail of tune；
And/or first Y-direction guide rail and second Y-direction guide rail are length-adjustable telescopic rail.
Preferably, in above-mentioned CAU test fixture, the bottom end of the locating piece and the longitudinal rail are hinged, described fixed
The top of position part is provided with supporting plate, the bottom surface for the second pallet described in support.
When carrying out CAU test using above-mentioned CAU test fixture: firstly, will test antenna and transponder is individually positioned in the
On one pallet and the second pallet；In test process, need to adjust detection antenna and transponder between apart from when, enable the second support
Guide rail slides up and down (also known as longitudinal sliding motion) to disk along longitudinal direction, and until distance is suitable between detection antenna and transponder, the two is in
Until optimal test position；Then, the second pallet is located on longitudinal rail by locating piece.
It can be seen from the above technical proposal that CAU test fixture provided by the utility model, whole device are non-metallic material
Matter does not influence product test performance.Also, when carrying out CAU test, pieces together part without temporarily finding and stacked, without
Artificial lift transponder adjusts its position, only by adusting height of second pallet on longitudinal rail, that is, is convenient to adjust
Second pallet after finding optimal test position, is located in longitudinal direction by locating piece by the vertical range between whole transponder and CAU
On guide rail, i.e., curable test result reads and records convenient for accurate.Its is easy to operate, simple testing process is easy.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of CAU test fixture provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the second pallet provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of telescopic rail provided by the embodiment of the utility model；
Fig. 4 is that the arragement construction of the horizontal adjustment guide provided by the embodiment of the utility model for the second pallet of support is shown
It is intended to.
Wherein:
1-CAU test fixture, 2- detect antenna (i.e. CAU), 3- transponder,
The first pallet of 11-, the second pallet of 12-, 14- locating piece,
120- idler wheel, the first X direction guiding rail of 121-, the 2nd X direction guiding rail of 122-,
The first Y-direction guide rail of 123-, the second Y-direction guide rail of 124-,
131- first longitudinal direction guide rail, 132- second longitudinal direction guide rail,
133- third longitudinal rail, the 4th longitudinal rail of 134-.
Specific embodiment
The utility model discloses a kind of CAU test fixtures, when doing CAU test, can easily be adjusted by the tooling
The distance between whole CAU and transponder.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 is that the overall structure of CAU test fixture provided by the embodiment of the utility model is illustrated referring to FIG. 1 to FIG. 4,
Figure, Fig. 2 are the structural schematic diagram of the second pallet provided by the embodiment of the utility model, and Fig. 3 provides for the utility model embodiment
Telescopic rail structural schematic diagram, Fig. 4 be the Level tune provided by the embodiment of the utility model for the second pallet of support
The arragement construction schematic diagram of guide rail.
CAU test fixture 1 provided by the embodiment of the utility model, each component therein is non-metallic material.Also, it should
CAU test fixture includes longitudinal rail, the first pallet 11, the second pallet 12 and locating piece 14.Wherein: longitudinal rail is provided with more
A (preferably four), the central axis and horizontal plane of multiple longitudinal rails；Longitudinal rail is arranged in first pallet 11
Top, for placing detection antenna 2；Second pallet 12 guide rail can be erected on longitudinal rail with longitudinal sliding along longitudinal direction, be used for
Place transponder 3；Locating piece 14 is used to the second pallet 12 being located in longitudinal rail.
When carrying out CAU test using CAU test fixture 1 provided by the embodiment of the utility model: firstly, will test antenna 2
It is individually positioned on the first pallet 11 and the second pallet 12 with transponder 3；In test process, needs to adjust detection antenna 2 and answer
Answer between device 3 apart from when, enabling the second pallet 12, guide rail slides up and down (also known as longitudinal sliding motion) along longitudinal direction, until detect antenna
Distance is suitable between 2 and transponder 3, until the two is in optimal test position；Then, by locating piece 14 by the second pallet
12 are located on longitudinal rail.
Wherein, in a particular embodiment, there are many optinal plans for the specific structure of locating piece 14 and positioning method:
For example, as shown in fig. 1, the bottom end of locating piece 14 and longitudinal rail are hinged, and the top of locating piece 14 is provided with holds
Supporting plate, the bottom surface for the second pallet of support 12.After the second pallet 12 slides into a certain position to be positioned, rotation 14 makes
The supporting plate of its movable end holds the bottom surface of the second pallet 12.At this point, leading between the bottom surface and supporting plate of the second pallet 12
Crossing frictional force can be realized without mutually sliding, to achieve the purpose that the second pallet 12 navigating to fixed height.
For example, can also be cooperated by the clamping structure being fitted to each other between the bottom surface and supporting plate of the second pallet 12,
Specifically, the bottom surface of the second pallet 12 is provided with multiple clamping grooves parallel to each other, and the upper surface of supporting plate table can be with the clamping
Slot is engaged by clamping, and the second pallet 12 is navigated to fixed height.
For example, the bottom surface of the second pallet 12 is provided with multiple slots, multiple location holes are provided on supporting plate, when the second support
After disk 12 slides into a certain position to be positioned, by the screw detachably installed, the location hole on supporting plate and second
The slot of 12 bottom surface of pallet, is dismantled again when can be fixedly connected, then move by the two.
But be not limited to that this, there are many optinal plan, this field skills for the specific structure and positioning method of locating piece 14
Art personnel can be specifically arranged according to actual needs, and the utility model is not especially limited this.
It can be seen from the above technical proposal that CAU test fixture provided by the embodiment of the utility model, whole device is non-
Metal material does not influence product test performance.Also, when carrying out CAU test, pieces together part without temporarily finding and is stacked,
Its position is adjusted without artificial lift transponder 3, only by adusting height of second pallet 12 on longitudinal rail
The vertical range between transponder and CAU is easily adjusted, after finding optimal test position, by locating piece 4 by the second pallet 2
It is located on longitudinal rail, i.e., curable test result, reads and record convenient for accurate.Its easy to operate, simple testing process
It is easy.
In a particular embodiment, there are four the longitudinal rail settings in CAU test fixture 1, respectively first longitudinal direction guide rail
131, second longitudinal direction guide rail 132, third longitudinal rail 133 and the 4th longitudinal rail 134, four longitudinal rails are parallel to each other and divide
It Wei Yu not rectangle corner location.
Specifically, the first pallet 11 is rectangular plate-like structure, and quadrangle is separately fixed at the top of four longitudinal rails；The
Two pallets 12 are rectangular plate-like structure, and quadrangle is slidably connected with four longitudinal rails respectively.
It in a particular embodiment, further include parallel to each other and horizontally disposed first guide X in above-mentioned CAU test fixture 1
Rail 121 and the 2nd X direction guiding rail 122.
Wherein, the both ends of the first X direction guiding rail 121 connect with first longitudinal direction guide rail 131, the sliding of second longitudinal direction guide rail 132 respectively
It connects, to enable 121 height of the first X direction guiding rail adjustable；The both ends of 2nd X direction guiding rail 122 respectively with third longitudinal rail the 133, the 4th
Longitudinal rail 134 is slidably connected, to enable 122 height of the 2nd X direction guiding rail adjustable.(described " being slidably connected " can be used in this section
The mode of clearance fit, which is realized, to be slided over each other, or the mode that idler wheel or ball roll in sliding slot can also be used realizes and slide each other
It is dynamic.)
Wherein, two parallel sides of the second pallet 12 are slided with the first X direction guiding rail 121, the 2nd X direction guiding rail 122 respectively
Connection.Specifically, multiple 120 (each sides at least two of idler wheel are respectively arranged in two parallel sides of the second pallet 12
Idler wheel 120, the central axis of idler wheel 120 are arranged on the side of the second pallet 12), multiple idler wheels 120 are rollably nested respectively
In the first X direction guiding rail 121 and the 2nd X direction guiding rail 122, in order to the second pallet 12 (i.e. 121 He of the first X direction guiding rail in X direction
The length extending direction of 2nd X direction guiding rail 122) movement adjusting.
It further, further include parallel to each other and horizontally disposed first Y-direction guide rail 123 in above-mentioned CAU test fixture 1
With the second Y-direction guide rail 124.
Wherein, the both ends of the first Y-direction guide rail 123 connect respectively with the first X direction guiding rail 121, the 2nd X direction guiding rail 122 (such as
Overlap or be slidably connected), and can be slided in the first X direction guiding rail 121 and the 2nd X direction guiding rail 122 with the second pallet 12；2nd Y
The both ends of direction guiding rail 124 are connect (such as overlap or be slidably connected) with the first X direction guiding rail 121, the 2nd X direction guiding rail 122 respectively, and
It can be slided in the first X direction guiding rail 121 and the 2nd X direction guiding rail 122 with the second pallet 12.
Wherein, other two parallel sides of the second pallet 12 respectively with the first Y-direction guide rail 123, the second Y-direction guide rail 124
It is slidably connected.Specifically, it is respectively arranged with multiple idler wheels 120 in two parallel sides of the second pallet 12 (each side is at least
Two idler wheels 120, the central axis of idler wheel 120 are arranged on the side of the second pallet 12), multiple difference of idler wheels 120 are rollably
The first Y-direction guide rail 123 is nested in, in the second Y-direction guide rail 124, in order to which the second pallet 12 is along Y-direction (i.e. the first Y-direction guide rail
123 and second Y-direction guide rail 124 length extending direction) mobile adjust.
To, the first X direction guiding rail 121, the 2nd X direction guiding rail 122, the first Y-direction guide rail 123 and the second Y-direction guide rail 124, altogether
With the horizontal adjustment guide (reference can be made to Fig. 1 and Fig. 4) constituted for the second pallet of support 12.
As it can be seen that CAU test fixture 1 provided by the embodiment of the utility model can be in vertical side not only by longitudinal rail
(i.e. longitudinal) adjusts the height of the second pallet 12 upwards；Moreover, by the first X direction guiding rail 121 and the 2nd X direction guiding rail 122, it can
The horizontal position of the second pallet 12 is adjusted in the X direction；It, can be in Y by the first Y-direction guide rail 123 and the second Y-direction guide rail 124
Side is adjusted up the horizontal position of the second pallet 12.It i.e. can be in tri- sides X, Y, Z for placing the second pallet 12 of transponder 3
To movement, consequently facilitating the relative position between adjustment transponder and CAU.
In a particular embodiment, above-mentioned locating piece 14, the first X direction guiding rail 121, the 2nd X direction guiding rail 122, the first Y-direction guide rail
123, the second Y-direction guide rail 124 and idler wheel 120 preferably use plastic material.In addition, other frame knots in CAU test fixture 1
Structure also can be used wooden.But the utility model is not especially limited this, those skilled in the art you can according to actual needs into
The specific setting of row.
Specifically, it in above-mentioned CAU test fixture, especially on the first pallet 11 and the second pallet 12, is provided with to survey
Try the reserved cabling channel of cable.
In order to further optimize the above technical scheme, it is additionally provided with graduated scale on above-mentioned longitudinal rail, in order to timely
Difference in height between measurement and reading transponder and CAU.In addition, in the first X direction guiding rail 121 and the 2nd X direction guiding rail 122 extremely
On a few X direction guiding rail, at least one Y-direction guide rail in the first Y-direction guide rail 123 and the second Y-direction guide rail 124, also all set
It is equipped with graduated scale, in order to measure and read the horizontal distance between transponder and CAU in time.It is finally reached solidification measurement knot
Fruit, accurate reading and record, the purpose convenient for finding optimal test point.
Further, the first X direction guiding rail 121, the 2nd X direction guiding rail 122, the first Y-direction guide rail 123 and the second Y-direction guide rail
124, it is length-adjustable telescopic rail (reference can be made to Fig. 3 or Fig. 4), so as to expand the moving distance of the second pallet 12.
When telescopic rail carries out flexible lengthen, also to guarantee that the first pallet 11 is located in always the top of longitudinal rail, horizontal position
It sets and height and position is all constant.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (9)
1. a kind of CAU test fixture, which is characterized in that each component in the CAU test fixture is non-metallic material, and
And the CAU test fixture includes:
The longitudinal rail of central axis and horizontal plane；
For placing the first pallet (11) of detection antenna (2), the top of the longitudinal rail is arranged in first pallet (11)
Portion；
For placing the second pallet (12) of transponder (3), second pallet (12) can be along the longitudinal rail longitudinal sliding motion
Ground is erected on the longitudinal rail；
Locating piece (14) for being located in second pallet (12) on the longitudinal rail.
2. CAU test fixture according to claim 1, which is characterized in that the longitudinal rail includes parallel to each other and divides
Not Wei Yu rectangle corner location first longitudinal direction guide rail (131), second longitudinal direction guide rail (132), third longitudinal rail (133) and
Four longitudinal rails (134).
3. CAU test fixture according to claim 2, which is characterized in that further include parallel to each other and horizontally disposed
One X direction guiding rail (121) and the 2nd X direction guiding rail (122), in which:
The both ends of the first X direction guiding rail (121) respectively with the first longitudinal direction guide rail (131), the second longitudinal direction guide rail
(132) it is slidably connected, to enable the first X direction guiding rail (121) height adjustable；
The both ends of the 2nd X direction guiding rail (122) respectively with the third longitudinal rail (133), the 4th longitudinal rail
(134) it is slidably connected, to enable the 2nd X direction guiding rail (122) height adjustable；
Two parallel sides of second pallet (12) respectively with the first X direction guiding rail (121), the 2nd X direction guiding rail
(122) it is slidably connected.
4. CAU test fixture according to claim 3, which is characterized in that further include parallel to each other and horizontally disposed
One Y-direction guide rail (123) and the second Y-direction guide rail (124), in which:
The both ends of first Y-direction guide rail (123) respectively with the first X direction guiding rail (121), the 2nd X direction guiding rail (122)
Connection, and can be sliding in the first X direction guiding rail (121) and the 2nd X direction guiding rail (122) with second pallet (12)
It is dynamic；
The both ends of second Y-direction guide rail (124) respectively with the first X direction guiding rail (121), the 2nd X direction guiding rail (122)
Connection, and can be slided with second pallet (12) in the first X direction guiding rail (121) and the 2nd X direction guiding rail (122)；
Two parallel sides of second pallet (12) respectively with first Y-direction guide rail (123), second Y-direction guide rail
(124) it is slidably connected.
5. CAU test fixture according to claim 4, which is characterized in that be provided with graduated scale on the longitudinal rail；
And/or at least one of the first X direction guiding rail (121) and the 2nd X direction guiding rail (122), it is provided with scale
Ruler；
And/or at least one of first Y-direction guide rail (123) and second Y-direction guide rail (124), it is provided with scale
Ruler.
6. CAU test fixture according to claim 4, which is characterized in that the first X direction guiding rail (121), described second
Being respectively arranged at least two in X direction guiding rail (122), first Y-direction guide rail (123), second Y-direction guide rail (124) can
The central axis of the idler wheel (120) rolled along sliding rail extending direction, the idler wheel (120) is arranged in the side of second pallet (12)
Bian Shang.
7. CAU test fixture according to claim 6, which is characterized in that the first X direction guiding rail (121), described second
X direction guiding rail (122), first Y-direction guide rail (123), second Y-direction guide rail (124) and the idler wheel (120) are plastics
Material.
8. CAU test fixture according to claim 4, which is characterized in that the first X direction guiding rail (121) and described
Two X direction guiding rails (122) are length-adjustable telescopic rail；
And/or first Y-direction guide rail (123) and second Y-direction guide rail (124) are length-adjustable telescopic rail.
9. CAU test fixture according to claim 1, which is characterized in that indulged with described the bottom end of the locating piece (14)
Direction guiding rail is hinged, and the top of the locating piece (14) is provided with supporting plate, the bottom surface for the second pallet (12) described in support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196148.3U CN208986957U (en) | 2018-12-25 | 2018-12-25 | A kind of CAU test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196148.3U CN208986957U (en) | 2018-12-25 | 2018-12-25 | A kind of CAU test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208986957U true CN208986957U (en) | 2019-06-14 |
Family
ID=66792367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822196148.3U Active CN208986957U (en) | 2018-12-25 | 2018-12-25 | A kind of CAU test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208986957U (en) |
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2018
- 2018-12-25 CN CN201822196148.3U patent/CN208986957U/en active Active
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Effective date of registration: 20211130 Address after: 102613 No.456, langlongsi village, Huangcun Town, Daxing District, Beijing Patentee after: BEIJING RAILWAY SIGNAL Co.,Ltd. Address before: 102613 No.456, langlongsi village, Huangcun Town, Daxing District, Beijing Patentee before: TONGHAO (BEIJING) RAILWAY INDUSTRIAL GROUP Co.,Ltd. |