JP6790489B2 - Specimen desk and specimen support device - Google Patents

Description

The present invention relates to a specimen desk and a specimen support device used for mounting a test instrument in, for example, an EMI measurement or an immunity test.

Various types of electronic devices have come into widespread use, and the effects of electromagnetic waves on these electronic devices and the effects of electromagnetic waves radiated by the electronic devices themselves on other electronic devices have become problems. Electromagnetic noise measurement (EMI measurement, EMI: Electromagnetic Interference) generated from electronic devices is performed in an outdoor test site or an anechoic chamber, and the resistance test (immunity test) of electronic devices to electromagnetic noise emitted from the outside is electromagnetic interference. It is done in a dark room.

The anechoic chamber for measuring radiation emissions is provided with a turntable for rotating the specimen (EUT: Equipment Under Test) and an antenna positioner for scanning the measuring antenna in the vertical direction. At the time of measuring the radiation emission, the specimen desk is placed on the turntable and the EUT is placed on the top plate of the specimen desk. In this state, the maximum radiation noise from the specimen is measured while scanning the measuring antenna at a certain measurement distance from the EUT in the vertical direction and rotating the turntable.

Here, according to a measurement standard for radiation emissions such as CISPR (Comite International Special des Perturbations Radioelectriques) 32, the specimens are placed aligned with the front edge of the top plate of the specimen desk. In addition, the specimen desk is placed on the turntable so that the center of the specimen (or the center of the virtual circumference including the related equipment if the specimen includes related equipment) is aligned with the rotation center of the turntable. There is a need to.

Japanese Unexamined Patent Publication No. 2013-88175

In CISPR22, since the standard size of the top plate of the test piece desk is 1.5 m × 1.0 m, the test piece desk having the size of the top plate of 1.5 m × 1.0 m is widely used. There is. In addition to this, in order to reduce the size of the anechoic chamber, a turntable as small as possible, for example, having a diameter of about 1.5 m may be used. In this case, if a test object desk having a top plate size of 1.5 m × 1.0 m is placed on the turntable as described above and an attempt is made to measure the radiation emission, the following two problems occur. That is,
(A) If the size of the legs of the test piece desk is approximately the same as the size of the top plate, the legs will protrude from the turntable and the test piece desk cannot be rotated together with the turntable.
(B) If the size of the legs of the test piece desk is made small enough to fit in the turntable, the legs cannot support the part of the top plate in the outer area of the turntable from below, and the turntable. There is a possibility of tipping over when rotating the
There is a problem.

Patent Document 1 "provides a specimen table capable of fitting the legs in the turntable even if the specimen table is moved according to the measurement conditions" ([Problem] of [Summary] of Patent Document 1). The subject was "a top plate extending in the front, rear, left, and right directions, and left and right legs arranged on both sides of the top plate in the left and right directions to support the top plate. In the test piece table, each of the legs is a lower leg and an upper leg that is located above the lower leg and is movably attached to the lower leg in the front and rear directions. The top plate can be moved in the front and rear directions together with the upper leg portion, and the upper leg portion is located on the rear side and can be rotationally moved toward the center side of the top plate. Disclosed "a configuration in which a side rotating portion is provided, and the lower leg portion is provided with a front rotating portion that is located on the front side and can rotate and move toward the center side of the top plate" (paragraph [0008] of Patent Document 1). doing. Here, looking at FIGS. 17 to 19 of Patent Document 1, a case where a test piece desk having a top plate size of 1.5 m × 1.0 m is placed on a turntable having a diameter of about 1.5 m. Therefore, when the specimen desk is arranged so that the front edge of the top plate is aligned with the rotation center of the turntable, the bottom surface of the rear end support portion 31 is arranged so as to come into contact with the turntable 5. With this arrangement, the specimen desk can be placed on a turntable with a diameter of about 1.5 m, but the size (range) of the legs of the specimen desk is small enough to fit in the turntable. The legs cannot support the part of the top plate in the outer region of the turntable from below, and there is a possibility that the legs may tip over when the turntable is rotated.

The present invention has been made in recognition of such a situation, and an object of the present invention is to provide a test piece desk capable of suppressing the risk of falling even if the turntable is small, and a test piece desk. The purpose is to provide a specimen support device.

One aspect of the present invention is
Top plate and
The main landing gear on the turntable and
With auxiliary legs on the floor outside the turntable,
A specimen desk that is placed on the turntable and rotates together with the turntable.
The lower surface of the auxiliary landing gear is located above the lower surface of the main landing gear by a predetermined length.

Another aspect of the present invention is a specimen support device. This specimen support device
Turntable and
The floor surrounding the upper surface of the turntable and
It is equipped with a test object desk placed on the turntable.
The test piece desk
Top plate and
The main landing gear on the turntable and
Anda complement Joashi portion you contact with the floor surface,
Along with the rotation of the turntable, the torque applied to the test object desk by the dynamic friction force between the floor surface and the auxiliary leg portion is caused by the static friction force between the turntable and the main leg portion. It is smaller than the torque applied to the test object desk,
The sample desk rotates together with the turntable due to a static frictional force between the turntable and the main landing gear.

The step between the upper surface of the turntable and the floor surface may be within 5 mm.

It should be noted that any combination of the above components and a conversion of the expression of the present invention between methods, systems and the like are also effective as aspects of the present invention.

According to the present invention, it is possible to provide a specimen desk capable of suppressing the risk of falling even if the turntable is small, and a specimen support device provided with the specimen desk.

A three-view view showing a state in which the specimen desk 1 according to the first embodiment of the present invention is placed on a turntable 7 and the specimen 30 is placed on the top plate 10 of the specimen desk 1. It is an enlarged view of FIG. 1A, and is the explanatory view of the distance from the rotation center of a turntable 7 to the main landing gear 13 and the auxiliary landing gear 15. A three-view view showing a state in which the specimen desk 2 according to the second embodiment of the present invention is placed on a turntable 7 and the specimen 30 is placed on the top plate 10 of the specimen desk 2. The right side view of the state where the specimen desk 3 which concerns on Embodiment 3 of this invention is placed on the turntable 7, and the specimen 30 is placed on the top plate 10 of the specimen desk 3. A three-view view showing a state in which the specimen desk 4 according to the fourth embodiment of the present invention is placed on a turntable 7 and the specimen 30 is placed on the top plate 10 of the specimen desk 4. A three-view view showing a state in which the specimen desk 5 according to the fifth embodiment of the present invention is placed on a turntable 7 and the specimen 30 is placed on the top plate 10 of the specimen desk 5.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The same or equivalent components, members, etc. shown in the drawings are designated by the same reference numerals, and redundant description will be omitted as appropriate. Moreover, the embodiment is not limited to the invention but is an example, and all the features and combinations thereof described in the embodiment are not necessarily essential to the invention.

Embodiment 1
In FIGS. 1A to 1C, the specimen desk 1 according to the first embodiment of the present invention is placed on the turntable 7, and the specimen 30 is placed on the top plate 10 of the specimen desk 1. It is a three-view view in a mounted state, FIG. 1 (A) is a top view (plan view), FIG. 1 (B) is a front view, and FIG. 1 (C) is a right side view. The turntable 7 is provided, for example, in an anechoic chamber. The upper surface of the turntable 7 and the floor surface 8 outside the turntable 7 are substantially flush with each other or have a step within 3 to 5 mm. The upper surface and the floor surface 8 of the turntable 7 may be made of metal, a radio wave absorber may be laid, or may be a ground equivalent floor simulating the radio wave reflection of the ground. If the surface of the radio wave absorber is not flat, such as a wedge shape or a pyramid shape, a fitting member made of foamed resin (such as styrofoam) that fits into the wedge shape or pyramid shape is placed on the surface side of the radio wave absorber. It may be fitted to form a flat surface on the surface side of the radio wave absorber. Furthermore, the surface of metal, radio wave absorbers (including radio wave absorbers in which a flat surface is constructed on the surface side by fitting members made of foamed resin (Styrofoam, etc.)) and the floor equivalent to the ground are coated with epoxy resin or the like. It may be the one on which the resin plate, the resin sheet, etc. are placed (bonded). The test piece desk 1 and the turntable 7 form a test piece support device.

The sample desk 1 is a sample electromagnetic wave low-reflection desk placed on a turntable 7, and is used for measuring electromagnetic waves such as electromagnetic wave noise measurement (EMI measurement) and antenna radiation characteristics. The specimen 30 to be measured is various electronic devices, and is placed on the top plate 10 of the specimen desk 1. Here, in order to correspond to CISPR32, the specimen 30 is placed so as to be aligned with the front edge of the top plate 10, and the plane dimension 1 is such that the center of the specimen 30 is aligned with the rotation center of the turntable 7. A .5 m × 1.0 m specimen desk 1 is arranged on a turntable 7 having a diameter of 1.5 m. As an example, the specimen 30 has a relatively small plane dimension of 0.1 m × 0.1 m and a height of 0.1 m.

The test object desk 1 has a top plate 10, a main landing gear 13 resting on the turntable 7, and an auxiliary landing gear 15 on the floor 8 outside the turntable 7. The top plate 10, the main landing gear 13, and the auxiliary landing gear 15 may be made of a material that reflects less electromagnetic waves. For example, Styrofoam or a resin plate or a resin sheet laminated with Styrofoam may be used. In the present embodiment, there are four main landing gears 13 and two auxiliary landing gears 15, and the legs are independent of each other. Each leg has a flat cross-sectional dimension of 0.2 m × 0.2 m, and the length is set so that the upper surface of the top plate 10 is 0.8 m above the upper surface of the turntable 7. The total contact area between the four main landing gears 13 and the upper surface of the turntable 7 is larger than the total contact area between the two auxiliary landing gears 15 and the floor surface 8 outside the turntable 7. The planographical cross-sectional dimensions of each leg may be appropriately changed depending on the material of each leg, the load capacity to be realized, and the like.

Two of the main landing gears 13 extend downward from both the left and right sides of the front end of the top plate 10 and come into contact with the upper surface of the turntable 7. The remaining two main landing gears 13 extend downward from both the left and right sides at the substantially center of the top plate 10 in the front-rear direction (short direction) and come into contact with the upper surface of the turntable 7. The two auxiliary leg portions 15 extend downward from both the left and right sides of the rear end portion of the top plate 10 and come into contact with the upper surface of the floor surface 8 outside the turntable 7. That is, in the present embodiment, the auxiliary leg portion 15 rests on the floor surface 8 outside the turntable 7. Preferably, the lower surface (bottom surface) of the main landing gear 13 is made of a material having a larger friction coefficient than the lower surface (bottom surface) of the auxiliary landing gear 15. For example, a resistance sheet having a high coefficient of friction made of a rubber sheet or the like is attached (adhered) to the lower surface of the main leg portion 13, and a resistance sheet having a low coefficient of friction made of a silicon coating sheet or a silicon coating film is attached to the lower surface of the auxiliary leg portion 15. Is pasted (adhered).

Due to the diameter of the turntable 7, the dimensions of the specimen desk 1, and the dimensions of the specimen 30, the main landing gear 13 of the specimen desk 1 is approximately near the center of the specimen desk 1 in the lateral direction. Can only be installed up to. Therefore, if the turntable 7 is rotated while the main landing gear 13 is simply installed on the turntable, the test piece desk 1 may tip over. Therefore, in the present embodiment, by providing the test piece desk 1 with the auxiliary legs 15 on the floor surface 8 outside the turntable 7, the test piece desk 1 can be tilted even when the turntable 7 is rotated. To prevent. However, if the frictional force (resistance due to friction) between the auxiliary leg portion 15 and the floor surface 8 outside the turntable 7 is large, when the turntable 7 is rotated, the test piece desk 1 is placed on the turntable 7. There is a problem that the position of is shifted. Therefore, in the present embodiment, the frictional force between the auxiliary landing gear 15 and the floor surface 8 outside the turntable 7 when the turntable 7 is rotated is the friction between the main landing gear 13 and the turntable 7. Make it smaller than force. As a result, as the turntable 7 rotates, the torque applied to the specimen desk 1 due to the frictional force between the floor surface 8 outside the turntable 7 and the auxiliary leg portion 15 is applied to the turntable 7 and the main leg portion 13. The torque applied to the specimen desk 1 can be made smaller by the frictional force between the two, and the frictional force between the turntable 7 and the main leg 13 rotates the specimen desk 1 together with the turntable 7. (It is possible to keep the position of the specimen desk 1 on the turntable 7 at the intended position).

FIG. 2 is an enlarged view of FIG. 1A, and is an explanatory view of the distances from the rotation center of the turntable 7 to the main landing gear portion 13 and the auxiliary landing gear portion 15. According to FIG. 2, each leg is numbered for convenience. here,
・ Distance between the center of turntable 7 and each leg: r _n
(N is n = 1, 2, ..., 6 and corresponds to the number of each leg shown in FIG. 2)
-Load applied to one main landing gear 13: Nin
-Load applied to one auxiliary leg 15: Nout
(Usually Nin ≧ Nout depending on the position of the specimen 30)
-Standing friction coefficient of the contact surface between the bottom of the main landing gear 13 and the turntable 7: μin
-Static friction coefficient of the contact surface between the bottom of the auxiliary leg 15 and the floor surface 8 outside the turntable 7: μout
-Dynamic friction coefficient of the contact surface between the bottom of the auxiliary leg 15 and the floor surface 8 outside the turntable 7: μouta
(Generally, μout ≧ μouta)
When defined as
-Static friction force of each main landing gear 13: Fin_n = μin × Nin
-Static frictional force of each auxiliary leg 15: Fout_n = μout × Nout
-Dynamic friction force of each auxiliary leg 15: Fuuta_n = μouta × Nout
-Torque applied to the specimen desk 1 due to the frictional force between each main landing gear 13 and the upper surface of the turntable 7 at the start of rotation of the turntable 7: Tin_n = Fin_n × r _n
-Torque applied to the specimen desk 1 by the frictional force between each auxiliary leg 15 and the upper surface of the floor surface 8 outside the turntable 7 at the start of rotation of the turntable 7: Tout_n = Fout_n × r _n
-Torque applied to the specimen desk 1 due to the frictional force between each auxiliary leg 15 and the upper surface of the floor surface 8 outside the turntable 7 during the rotation of the turntable 7: Touta_n = Fouta_n × r _n
-Conditions for starting to rotate the specimen desk 1 together with the turntable 7:
ΣTin_n> ΣTout_n
(Tin_n is the total of Tin_1 to Tin_4)
(ΣTout_n is Tout_5 + Tout_6)
-Conditions for keeping the specimen desk 1 rotating together with the turntable 7:
ΣTin_n> ΣTouta_n
(ΣTouta_n is Touta_5 + Touta_6)
Will be. Normally, if the condition for starting to rotate the specimen desk 1 together with the turntable 7 is satisfied, the condition for continuing to rotate the specimen desk 1 together with the turntable 7 is also satisfied.

According to this embodiment, the following effects can be obtained.

(1) Since the specimen desk 1 has the auxiliary leg portion 15, the rear portion of the top plate 10 (the portion in the outer region of the turntable 7) can be supported from below by the auxiliary leg portion 15, and the turn. Even if the table 7 is small, the risk of falling can be suppressed. Specifically, in the case where the specimen desk 1 having the top plate 10 having a standard size of 1.5 m × 1.0 m is placed on a small turntable 7 having a diameter of about 1.5 m or less, for example. Even if there is, the auxiliary leg portion 15 can support the portion of the top plate 10 in the outer region of the turntable 7 from below, and the possibility of tipping over when the turntable 7 rotates can be reduced.

(2) The frictional force between the auxiliary leg 15 and the floor surface 8 outside the turntable 7 when the turntable 7 rotates is smaller than the frictional force between the main leg 13 and the turntable 7. However, since the specimen desk 1 can rotate together with the turntable 7, it is possible to suppress the displacement of the specimen desk 1 on the turntable 7 by providing the auxiliary leg portion 15.

Embodiment 2
In FIGS. 3A to 3C, the specimen desk 2 according to the second embodiment of the present invention is placed on the turntable 7, and the specimen 30 is placed on the top plate 10 of the specimen desk 1. It is a three-view view in a mounted state, FIG. 3 (A) is a top view (plan view), FIG. 3 (B) is a front view, and FIG. 3 (C) is a right side view. In FIGS. 3 (A) and 3 (C), the auxiliary leg portion 15 is highlighted by hatching. In the specimen desk 2, the main landing gear 13 and the auxiliary landing gear 15 are on both the left and right sides of the top plate 10 as compared with the specimen desk 1 of the first embodiment shown in FIGS. 1A to 1C. They differ in that they are continuous, and agree in other respects. That is, the two main landing gears 13 on the left side and one auxiliary landing gear 15 on the left side of the specimen desk 1 shown in FIG. 1 (A) are continuous plate-shaped legs, and the two main landing gears on the right side. The test piece desk 2 shown in FIG. 3A is a plate-shaped leg portion 13 and one auxiliary leg portion 15 which are similarly continuous. Of both plate-shaped legs, the portion inside the outer circumference of the turntable 7 is the main landing gear 13, and the portion outside the outer circumference of the turntable 7 is the auxiliary landing gear 15. The contact area between the main landing gear 13 and the upper surface of the turntable 7 is larger than the contact area between the auxiliary landing gear 15 and the floor surface 8 outside the turntable 7. In the test object desk 2, the bottom surfaces of the main landing gear 13 and the auxiliary landing gear 15 are considered as a set of minute surfaces (quadrangles and triangles), so that the main landing gear 13 and the auxiliary landing gear 15 are as described in FIG. The frictional force of the auxiliary landing gear 15 and the torque resulting from the frictional force can be calculated. The present embodiment can also have the same effect as that of the first embodiment.

Embodiment 3
FIG. 4 shows the right side surface of the specimen desk 3 according to the third embodiment of the present invention in a state where the specimen desk 3 is placed on the turntable 7 and the specimen 30 is placed on the top plate 10 of the specimen desk 1. It is a figure. In FIG. 4, the auxiliary leg portion 15 is highlighted by hatching. In the specimen desk 3, the lower surface of the auxiliary landing gear 15 is more predetermined than the lower surface of the main landing gear 13 as compared with the specimen desk 2 of the second embodiment shown in FIGS. 3 (A) to 3 (C). It differs in that it is located above by the length of, and agrees in other respects. Generally, the turntable 7 embedded in an anechoic chamber or the like is installed so as to have a step of 3 to 5 mm or less with the floor surface 8 on the outside thereof. Therefore, in order to prevent the auxiliary leg portion 15 from coming into contact with the floor surface 8 outside the turntable 7 when the turntable 7 rotates, the predetermined length is preferably 3 to 5 mm. In the example of FIG. 4, since the upper surface of the turntable 7 and the floor surface 8 outside the turntable 7 are flush with each other, the predetermined length is between the floor surface 8 outside the turntable 7 and the lower surface of the auxiliary leg portion 15. A gap is provided. If the gap is 3 to 5 mm, when the test object desk 3 is about to fall, the auxiliary leg portion 15 and the floor surface 8 outside the turntable 7 come into contact with each other before the top plate 10 is greatly tilted. It is possible to prevent the test object desk 3 from tipping over while suppressing the drop of the 30 and the like. In the present embodiment, the lower surface of the auxiliary landing gear 15 does not have to be made of a material having a lower coefficient of friction than the lower surface of the main landing gear 13.

According to the present embodiment, since the auxiliary leg portion 15 and the floor surface 8 outside the turntable 7 are not in contact with each other and the frictional force between the two is zero, the specimen desk 3 can be smoothly combined with the turntable 7. It can be rotated (the displacement of the specimen desk 3 on the turntable 7 can be suppressed). Further, when the test piece desk 3 is about to fall, the auxiliary leg portion 15 comes into contact with the floor surface 8 outside the turntable 7, so that the test piece desk 3 can be suitably suppressed from falling.

Embodiment 4
In FIGS. 5A to 5C, the specimen desk 4 according to the fourth embodiment of the present invention is placed on the turntable 7, and the specimen 30 is placed on the top plate 10 of the specimen desk 4. It is a three-view view in a mounted state, FIG. 5 (A) is a top view (plan view), FIG. 5 (B) is a front view, and FIG. 5 (C) is a right side view. The test piece desk 4 is different from the test piece desk 2 of the second embodiment shown in FIGS. 3A to 3C in that casters 17 are provided at the lower part of the auxiliary leg portion 15. , In other respects. In the present embodiment, the lower surface of the auxiliary landing gear 15 does not need to be made of a material having a lower coefficient of friction than the lower surface of the main landing gear 13. The caster 17 comes into contact with the floor surface 8 outside the turntable 7.

According to the present embodiment, the frictional force between the caster 17 and the floor surface 8 outside the turntable 7 becomes a rolling frictional force, which is extremely small as compared with the sliding frictional force. It can rotate smoothly together with the turntable 7 (the displacement of the specimen desk 4 on the turntable 7 can be suppressed). Further, when the caster 17 of the auxiliary leg portion 15 comes into contact with the floor surface 8 outside the turntable 7, the risk of the specimen desk 4 falling over can be suppressed.

In the test object desk 4, the lower end of the caster 17 may be located above the lower surface of the main landing gear 13 by a predetermined length (preferably 3 to 5 mm). In this case, when the test piece desk 4 is about to fall, the casters 17 and the floor surface 8 outside the turntable 7 come into contact with each other before the top plate 10 is greatly tilted, so that the test piece 30 is prevented from falling. It is possible to prevent the test object desk 4 from tipping over. Further, since the frictional force between the casters 17 and the floor surface 8 outside the turntable 7 is extremely small, even if the casters 17 and the floor surface 8 outside the turntable 7 come into contact with each other, the turntable 7 is not stopped. The test piece desk 4 can be continuously placed on the turntable 7 at the intended place.

Embodiment 5
In FIGS. 6A to 6C, the specimen desk 5 according to the fifth embodiment of the present invention is placed on the turntable 7, and the specimen 30 is placed on the top plate 10 of the specimen desk 5. It is a three-view view in a mounted state, FIG. 6 (A) is a top view (plan view), FIG. 6 (B) is a front view, and FIG. 6 (C) is a right side view. A second main landing gear portion 13a is added to the specimen desk 5 as compared with the specimen desk 4 of the fourth embodiment shown in FIGS. 5A to 5C, and the main landing gear portion 13 and the second main landing gear portion 13a are added. 2 A caster 14 that comes into contact with the upper surface of the turntable 7 is provided below the main landing gear 13a, and the lower end of the caster 17 of the auxiliary landing gear 15 is smaller than the lower end of the caster 14 of the main landing gear 13 and the second main landing gear 13a. They differ in that they are located above by a predetermined length (preferably 3-5 mm) and agree in other respects.

The second main landing gear portion 13a extends downward from the top plate 10 and has a V-shaped flat cross section, and connects the rear end portions of the left and right main landing gear portions 13. The V-shaped corner (valley) of the second main landing gear 13a is located on the rear end of the turntable 7, and casters 14 are provided at the corner. The casters 14 are also provided at the lower portions of the front end and the rear end of the left and right main landing gears 13, respectively. The caster 14 preferably has a rotation lock function. Alternatively, a caster stopper or the like (not shown) may be placed around the caster 14.

According to the present embodiment, by adding the second main landing gear portion 13a, the risk of the specimen desk 5 falling over when the turntable 7 is rotated can be further reduced. Further, since the casters 14 are provided below the main landing gear 13 and the second main landing gear 13a, the test object desk 5 can be easily transported. Further, by using a caster 14 having a rotation lock mechanism or by placing a caster stopper (not shown) around the caster 14, it is possible to suppress the displacement of the test piece desk 5 on the turntable 7 (turntable 7). It is possible to keep the position of the test piece desk 5 above at the intended position). Further, since the lower end of the caster 17 of the auxiliary landing gear 15 is located above the lower end of the caster 14 of the main landing gear 13 and the second main landing gear 13a by a predetermined length, the floor outside the caster 17 and the turntable 7 The frictional force between the surface 8 and the surface 8 becomes 0, and the specimen desk 5 can be smoothly rotated together with the turntable 7 (the displacement of the specimen desk 5 on the turntable 7 can be suppressed). When the test object desk 5 is about to fall toward the auxiliary leg portion 15, the caster 17 of the auxiliary leg portion 15 comes into contact with the floor surface 8 outside the turntable 7, so that the fall can be prevented. Further, since the frictional force between the casters 17 of the auxiliary legs 15 and the floor surface 8 outside the turntable 7 is extremely small, even if the casters 17 and the floor surface 8 outside the turntable 7 come into contact with each other, the turntable It is possible to continue to place the specimen desk 5 on the turntable 7 at the intended place without stopping the 7.

Although the present invention has been described above by taking the embodiment as an example, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way. Hereinafter, a modification will be described.

The specific numerical values of each dimension shown in the embodiment are an example, and each dimension can be appropriately changed according to the required specifications. In the configurations of the first to fourth embodiments, the second main landing gear portion 13a (not including the casters 14) of the fifth embodiment shown in FIGS. 6A to 6C may be added. In the fifth embodiment, the second main landing gear 13a may be omitted. Casters may be added to the lower parts of the main landing gear 13 and the auxiliary landing gear 15 of the first embodiment shown in FIGS. 1A to 1C.

1 to 5 Specimen desk (electromagnetic wave low reflection desk for specimen), 7 turntables, 8 floors,
10 Top plate, 13 Main landing gear, 13a 2nd main landing gear, 14 casters, 15 auxiliary landing gears, 17 casters, 30 specimens (EUT)

Claims (3)

Top plate and
The main landing gear on the turntable and
With auxiliary legs on the floor outside the turntable,
A specimen desk that is placed on the turntable and rotates together with the turntable.
A test object desk in which the lower surface of the auxiliary landing gear is located above the lower surface of the main landing gear by a predetermined length. Turntable and
The floor surrounding the upper surface of the turntable and
It is equipped with a test object desk placed on the turntable.
The test piece desk
Top plate and
The main landing gear on the turntable and
Anda complement Joashi portion you contact with the floor surface,
Along with the rotation of the turntable, the torque applied to the test object desk by the dynamic friction force between the floor surface and the auxiliary leg portion is caused by the static friction force between the turntable and the main leg portion. It is smaller than the torque applied to the test object desk,
A specimen support device, characterized in that the specimen desk rotates together with the turntable due to a static frictional force between the turntable and the main landing gear. The specimen support device according to claim 2 , wherein the step between the upper surface of the turntable and the floor surface is within 5 mm.

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