WO2014106902A1 - Dispositif à plateau tournant - Google Patents

Dispositif à plateau tournant Download PDF

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Publication number
WO2014106902A1
WO2014106902A1 PCT/JP2013/050038 JP2013050038W WO2014106902A1 WO 2014106902 A1 WO2014106902 A1 WO 2014106902A1 JP 2013050038 W JP2013050038 W JP 2013050038W WO 2014106902 A1 WO2014106902 A1 WO 2014106902A1
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WO
WIPO (PCT)
Prior art keywords
conductor
turntable
gap
floor surface
floor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/050038
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English (en)
Japanese (ja)
Inventor
淳司 大塚
昭憲 杉本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Mitsubishi Electric Industrial Systems Corp
Original Assignee
Toshiba Mitsubishi Electric Industrial Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Mitsubishi Electric Industrial Systems Corp filed Critical Toshiba Mitsubishi Electric Industrial Systems Corp
Priority to JP2014555414A priority Critical patent/JP5922258B2/ja
Priority to CN201380069178.5A priority patent/CN104903733B/zh
Priority to PCT/JP2013/050038 priority patent/WO2014106902A1/fr
Publication of WO2014106902A1 publication Critical patent/WO2014106902A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/0821—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning rooms and test sites therefor, e.g. anechoic chambers, open field sites or TEM cells

Definitions

  • the present invention relates to a turntable device including a turntable unit used in an anechoic chamber or the like.
  • a turntable device is provided in the anechoic chamber.
  • the turntable device includes a floor surface portion that is a fixed portion and a turntable portion that is rotatable with respect to the floor surface portion.
  • a test body such as an electronic component and an electric appliance is placed on the turntable portion, and the electromagnetic wave characteristics of the test body are tested while rotating the turntable portion.
  • a gap is formed between the turntable portion and the floor surface portion in order to avoid contact between the turntable portion and the floor surface portion when the turntable portion rotates. That is, the turntable portion and the floor surface portion are separated by a small distance. Further, both the turntable portion and the floor surface portion have an electromagnetic wave shielding function.
  • the turntable portion and the floor portion are electrically connected via an earth roller.
  • the earth roller is fixed on the shaft.
  • the earth roller rotates around the shaft while being in contact with the turntable.
  • an object of the present invention is to provide a turntable device that can suppress wear of a conduction mechanism. More preferably, it is an object of the present invention to provide a turntable device that can realize simplification of the structure of the conduction mechanism and cost reduction. Alternatively, more preferably, an object is to provide a turntable device capable of improving the electromagnetic wave shielding effect.
  • a turntable device has an electromagnetic wave shielding function, an opening, a floor surface portion fixedly installed, an electromagnetic wave shielding function, and a horizontal direction.
  • a turntable portion disposed in the opening of the floor surface portion and rotating with respect to the floor surface portion so that a gap is formed between the floor surface portion and the end portion of the floor surface portion, and the floor surface portion and the turntable.
  • a turntable device has an electromagnetic wave shielding function, has an opening, has a floor surface portion fixedly installed, and has an electromagnetic wave shielding function, and in the horizontal direction, an end of the floor surface portion.
  • a turntable portion disposed in the opening of the floor surface portion and rotating with respect to the floor surface portion so as to form a gap therebetween, and so as to contact both the floor surface portion and the turntable portion.
  • a conductor that rolls with respect to the floor surface portion and also rolls with respect to the turntable portion while maintaining the contact when the turntable portion rotates.
  • the conduction mechanism according to the present invention is constituted by a conductor that can roll with respect to both the floor portion and the turntable portion. Since it is a conductor that simply rolls and there is no fixed portion, the wear is very low. Therefore, in the present invention, wear of the conduction mechanism can be suppressed. Therefore, in the present invention, stable equipotentialization between the floor portion and the turntable portion can be maintained over a long period.
  • FIG. 2 is a cross-sectional view showing a schematic configuration of a cross section of an anechoic chamber 100.
  • FIG. FIG. 3 is an enlarged plan view showing the main configuration of the turntable device according to Embodiment 1. It is an expanded sectional view which shows the principal part structure of the turntable apparatus which concerns on Embodiment 1. FIG. It is an enlarged plan view which shows the principal part structure of the turntable apparatus which concerns on Embodiment 2. FIG. It is an expanded sectional view which shows the principal part structure of the turntable apparatus which concerns on Embodiment 2. FIG. It is an expanded sectional view which shows the principal part structure of the turntable apparatus which concerns on Embodiment 3.
  • FIG. 10 is an enlarged view showing a configuration of a truncated cone-shaped conductor 8A according to Embodiment 4.
  • FIG. 10 is an expanded sectional view which shows the principal part structure of the turntable apparatus which concerns on Embodiment 5.
  • FIG. It is an expanded sectional view which shows the other structural example of the turntable apparatus which has the collar part 15.
  • FIG. 10 is an expanded sectional view which shows the principal part structure of the turntable apparatus which concerns on Embodiment 4.
  • FIG. 10 is an enlarged view showing a configuration of a truncated cone-shaped conductor 8A according to Embodiment 4.
  • FIG. is an expanded sectional view which shows the principal part structure of the turntable apparatus which concerns on Embodiment 5.
  • FIG. It is an expanded sectional view which shows the other structural example of the turntable apparatus which has the collar part 15.
  • FIG. 10 is an enlarged view showing a configuration of a truncated cone-shaped conductor 8A according to Embodiment 4.
  • FIG. 1 is a plan view showing a schematic configuration when the anechoic chamber 100 is viewed from above.
  • FIG. 2 is a cross-sectional view showing a schematic configuration of a cross section of the anechoic chamber 100.
  • the ceiling side (upper side in FIG. 2) of the anechoic chamber 100 is referred to as “upper” or “upper”, and the floor side (lower side in FIG. 2) of the anechoic chamber 100 is referred to as “lower” or “upper”.
  • the entire room 50 in which the test and measurement of the specimen is performed is covered with an electromagnetic shielding material. Further, in the anechoic chamber 100, a radio wave absorber is disposed on the wall or ceiling surface of the room 50 in order to prevent reflection of radio waves.
  • a turntable is disposed on the floor surface of the room 50 of the anechoic chamber 100. That is, as shown in FIGS. 1 and 2, the floor surface of the room 50 of the anechoic chamber 100 is composed of the floor surface portion 1 and the turntable portion 2.
  • the floor 1 is fixedly installed in the anechoic chamber 100 (that is, it is immobile in the anechoic chamber 100).
  • the turntable part 2 is rotatable with respect to the floor part 1 which is a fixed state.
  • the floor surface portion 1 and the turntable portion 2 are also covered with an electromagnetic wave shielding material, and a radio wave absorber is provided.
  • the floor surface portion 1 is provided with an opening having a circular shape in plan view.
  • the turntable part 2 whose planar view shape is circular is arrange
  • the upper surface of the floor surface portion 1 and the upper surface of the turntable portion 2 are aligned in the horizontal direction (that is, as described later).
  • the gap 3 exists, the upper surface of the floor surface portion 1 and the upper surface of the turntable portion 2 are flush with each other).
  • the diameter of the turntable 2 is slightly smaller than the diameter of the opening. Accordingly, as shown in FIGS. 1 and 2, in a state where the turntable portion 2 is disposed in the opening portion, in the horizontal direction, between the end portion of the floor surface portion 1 and the end portion of the turntable portion 2. A gap 3 is formed.
  • the presence of the gap 3 prevents the turntable portion 2 from contacting the floor surface portion 3 when the turntable portion 2 rotates.
  • the width of the gap 3 is several mm (for example, about 5 to 7 mm).
  • a space 5 is formed under the floor of the anechoic chamber 100, and various devices (not shown) including the motor 4 are disposed in the space 5.
  • the turntable portion 2 is rotated by the motor 4. More specifically, the turntable unit 2 is rotated by a driving force of the motor 4 about a virtual rotation axis AX passing through the center of the turntable unit 2 (in FIG. 1, clockwise or counterclockwise). The turntable unit 2 rotates).
  • the test specimen is placed on the turntable 2. And in the anechoic chamber 100, the test and measurement regarding the electromagnetic wave with respect to the said test body are implemented, rotating the said turntable part 2.
  • the turntable device according to the present invention is constituted by a conduction mechanism in which the floor surface portion 1 and the turntable portion 2 have the same potential in addition to the floor surface portion 1, the turntable portion 2 and the motor 4 described above.
  • the conduction mechanism according to the present invention will be specifically described with reference to the drawings illustrating the embodiments.
  • FIG. 3 is a plan view showing a configuration of a conduction mechanism provided in the turntable device according to the present embodiment. Furthermore, FIG. 4 is a cross-sectional view showing the configuration of the conduction mechanism. Here, FIGS. 3 and 4 are enlarged views showing a part of the gap 3 shown in FIGS. 1 and 2 (including a part of the peripheral configuration).
  • a conductor 8 is provided as a conduction mechanism.
  • the conductor 8 is disposed so as to contact both the floor surface portion 1 and the turntable portion 2. And when the turntable part 2 rotates, the conductor 8 rolls with respect to the floor surface part 1, and also rolls with respect to the turntable part 2, maintaining the said contact. That is, the conductor 8 is not fixed anywhere and can freely roll in the gap 3.
  • the specific configuration of the present embodiment is as follows.
  • the floor portion 1 has a flat plate shape having a predetermined thickness
  • the turntable portion 2 has a disk shape having a predetermined thickness.
  • the thickness of the floor surface portion 1 and the thickness of the turntable portion 2 are the same, but the height of the main surface (upper surface) of the floor surface portion 1 that becomes the floor surface of the room 50. If the main surface (upper surface) height of the turntable portion 2 matches (if it is flush), it is not necessary to make the thicknesses of both members 1 and 2 particularly the same.
  • the peripheral end portion (peripheral end portion on the opening side) facing the turntable portion 2 of the floor surface portion 1 is an inclined surface that expands as it proceeds upward.
  • the peripheral edge part which faces the floor surface part 1 of the turntable part 2 becomes an inclined surface which spreads as it progresses upward.
  • the conductor 8 is disposed in the gap 3 having the tapered shape.
  • the conductor 8 is a sphere.
  • the conductor 8 is in contact with the peripheral end portion of the floor surface portion 1 and the peripheral end portion of the turntable portion 2. By the contact, the floor portion 1 and the turntable portion 2 are electrically connected via the conductor 8.
  • the conductor 8 is made of a conductive material such as copper, brass or iron. Moreover, the diameter of the conductor 8 which is a sphere is about several mm.
  • the conductor 8 is large enough to fit within the gap 3. That is, the conductor 8 is smaller than the widest portion of the gap 3 and larger than the narrowest portion of the gap 3.
  • the upper portion of the conductor 8 is preferably located at a position lower than the upper surface of the floor surface portion 1 and the upper surface of the turntable portion 2. That is, it is desirable that the conductor 8 does not protrude upward from the gap 3.
  • the conductor 8 is disposed so as to be in contact with both the peripheral end portion of the floor surface portion 1 and the peripheral end portion of the turntable portion 2. And when the turntable part 2 rotates, while the said contact is maintained, the conductor 8 rolls also with respect to the peripheral end part of the floor surface part 1, and also with respect to the peripheral end part of the turntable part 2.
  • the conductors 8 are plural, and the conductors 8 are arranged side by side along the circumferential direction in the annular gap 3 shown in the plan view of FIG. (See enlarged view of FIG. 3).
  • the adjacent conductors 8 may be in contact with each other, or the adjacent conductors 8 may be spaced apart.
  • a plurality of partition portions 9 may be evenly arranged in the annular gap 3.
  • the partition portion 9 is connected to the floor surface portion 1 side and is not connected to the turntable portion 2 side.
  • the partition portion 9 may be connected to the turntable portion 2 side and may not be connected to the floor surface portion 1 side.
  • the partition portion 9 divides the annular gap 3 into at least two annular pieces in plan view. And the conductor 8 is each arrange
  • one conductor 8 may be disposed in the gap 3 between each divided annular piece, or two or more conductors 8 may be disposed.
  • the turntable device is disposed so as to come into contact with both the floor surface portion 1 and the turntable portion 2 and maintains the contact when the turntable portion 2 rotates.
  • the electric conductor 8 which rolls with respect to the floor surface part 1 and also rolls with respect to the turntable part 2 is provided.
  • the conduction mechanism according to the present embodiment is configured by the conductor 8 that rolls in the gap 3, and does not have a fixed shaft or the like, and wear of the conductor 8 that simply rolls is very small. Therefore, in the present embodiment, wear of the conduction mechanism can be suppressed, and stable equipotentialization between the floor portion 1 and the turntable portion 2 can be maintained over a long period.
  • the conductor 8 is not fixed in any of the floor portion 1 and the turntable portion 2 and rolls with respect to both 1 and 2. Therefore, there is no wear on the fixing portion for fixing the conductor 8 (for example, a roller on which the conductor 8 rotates, a rotating shaft for rotating the roller, etc.), and maintenance of the fixing portion is not required. . That is, it contributes to simplification of configuration, ease of maintenance, and cost reduction.
  • a plurality of conductors 8 are arranged in the gap 3. Accordingly, the floor surface portion 1 and the turntable portion 2 can be electrically connected to each other at a plurality of locations, and the same electric potential between the floor surface portion 1 and the turntable portion 2 can be improved. Moreover, the electromagnetic wave shielding effect in the gap 3 is also improved.
  • the conductor 8 is arranged in the tapered gap 3 whose width becomes narrower as it goes downward.
  • the configuration of the conduction mechanism is extremely simple. As a result, the cost of the conduction mechanism can be reduced, and since the configuration is simple, maintenance is also facilitated.
  • the conductor 8 is a sphere, the conductor 8 can smoothly roll in the gap 3, the influence of electromagnetic wave measurement / test on the test body can be reduced, and wear of the conduction mechanism can be further reduced. Reduction is possible.
  • the upper portion of the conductor 8 that is a sphere is located lower than the upper surface of the floor surface portion 1 and the upper surface of the turntable portion 2.
  • the conductor 8 can also be prevented from sinking into the gap 3 due to the external force.
  • At least a plurality of partition portions 9 connected to only one side of the floor surface portion 1 and the turntable portion 2 are disposed in the annular gap 3.
  • the annular gap 3 is partitioned into a plurality of annular pieces by the arrangement of the partition portion 9.
  • FIG. 6 is a cross-sectional view illustrating a configuration of a conduction mechanism included in the turntable device according to the present embodiment.
  • FIG. 6 is an enlarged view showing a part of the gap 3 shown in FIGS. 1 and 2 (including a part of the peripheral configuration).
  • a conductor 8 is provided as a conduction mechanism.
  • the conductor 8 is disposed so as to contact both the floor surface portion 1 and the turntable portion 2. And when the turntable part 2 rotates, the conductor 8 rolls with respect to the floor surface part 1, and also rolls with respect to the turntable part 2, maintaining the said contact. That is, the conductor 8 is not fixed anywhere, and can freely roll in the gap 3 (more specifically, in the conductor mounting portion 12 described later).
  • the specific configuration of the present embodiment is as follows.
  • the floor portion 1 is composed of a main body portion 1A and a first member 1B
  • the turntable portion 2 is composed of a main body portion 2A and a second member 2B.
  • the main body 1A has a flat plate shape having a predetermined thickness
  • the main body 2A has a disk shape having a predetermined thickness.
  • the entire portion that can be viewed from above the floor portion 1 is the main body portion 1A
  • the entire portion that can be viewed from above the turntable portion 2 is the main body portion 2A. Note that a part of the first member 1 ⁇ / b> B and a part of the second member 2 ⁇ / b> B are visible from above in the lower part of the gap 3.
  • the thickness of the main body 1A and the thickness of the main body 2A are the same.
  • the main body 1A and the main body 2A are both conductive, and the first member 1B and the second member 2B are both conductive.
  • the first member 1B is composed of an overhang portion 1Ba, an extended portion 1Bb, and a fixed portion 1Bc. Consists of.
  • the fixed portion 1Bc is connected and fixed to the lower surface side of the main body 1A near the gap 3. By the connection and fixation, the main body 1A and the first member 1B are electrically connected.
  • a fixed portion 2Bc is connected and fixed to the lower surface side of the main body 2A near the gap 3. The main body 2A and the second member 2B are electrically connected by the connection fixing.
  • the first member 1B has an extending portion 1Bb extending downward, one end of the extending portion 1Bb is connected to the fixed portion 1Bc, and the other end of the extending portion 1Bb is , Connected to the overhang portion 1Ba.
  • the second member 2B has an extending portion 2Bb extending downward, one end of the extending portion 2Bb is connected to the fixed portion 2Bc, and the other end of the extending portion 2Bb is , Connected to the overhang portion 2Ba.
  • both the overhang portion 1Ba and the overhang portion 2Ba protrude toward the gap 3 side.
  • the end portion of the overhang portion 1Ba and the end portion of the overhang portion 2Ba face each other with the small slit 11 therebetween.
  • the dimension protruding to the gap 3 side of the overhang portion 1Ba is the same as the dimension protruding to the gap 3 side of the overhang portion 2Ba. Further, as apparent from the above configuration and as shown in FIG. 6, the width of the small slit 11 in the left-right direction in FIG. 6 is smaller than the width of the gap 3 in the left-right direction in FIG.
  • the gap 3 is annular, and the first member 1 ⁇ / b> B and the second member 2 ⁇ / b> B having the cross-sectional configuration of FIG. 6 are arranged in a circular shape along the annular shape. ing.
  • the conductor mounting portion 12 having a concave cross-sectional shape is formed below the gap 3 by the first member 1B having the above configuration and the second member 2B having the above configuration (see FIG. 6). That is, the conductor placing portion 12 formed by the first member 1B and the second member 2B is disposed below the gap 3 (the space 5 side below the floor surface).
  • a small slit 11 having a width smaller than the width of the gap 3 is formed at the bottom of the concave conductor mounting portion 12 (see FIG. 6).
  • the first member 1B and the second member 2B are not in direct contact.
  • the conductor 8 is arranged so as to close the small slit 11 in the conductor mounting portion 12. That is, the conductor 8 is completely contained in the conductor placing portion 12 formed below the floor surface.
  • the conductor 8 is a sphere. The conductor 8 is in contact with the first member 1B and the second member 2B in the conductor mounting portion 12. By the contact, the floor portion 1 and the turntable portion 2 are electrically connected via the conductor 8.
  • the conductor 8 is made of a conductive material such as copper, brass or iron.
  • the diameter of the conductor 8 that is a sphere is, for example, about several mm.
  • the conductor 8 has a size that can be accommodated in the conductor mounting portion 12. That is, the conductor 8 is smaller than the width of the conductor placement portion 12 in the horizontal direction in FIG. 6 and larger than the width of the small slit 11.
  • the conductor 8 is in contact with both the vicinity of the small slit 11 of the first member 1B constituting the floor surface portion 1 and the vicinity of the small slit 11 of the second member 2B constituting the turntable portion 2. Has been placed. And when the turntable part 2 rotates, while the said contact is maintained, while the conductor 8 rolls with respect to the floor surface part 1 (more specifically, 1st member 1B), the turntable part 2 (more concretely). Thus, it also rolls against the second member 2B).
  • the conductors 8 are arranged side by side along the circumferential direction in the annular gap 3 shown in the plan view of FIG. .
  • the adjacent conductors 8 may be in contact with each other, or the adjacent conductors 8 may be spaced apart.
  • a plurality of partition portions may be evenly arranged in the annular conductor mounting portion 12.
  • the partition portion is connected to the floor surface portion 1 side (more specifically, the first member 1B side), and the turntable portion 2 side (more specifically, the second member 2B side). Not connected.
  • the partition portion is connected to the turntable portion 2 side (more specifically, the second member 2B side), and the floor surface portion 1 side (more specifically, the first member 1B side) and Is not connected.
  • the partition part partitions the conductor mounting part 12 which is annular in plan view into at least two or more annular pieces.
  • the conductor 8 is arrange
  • one conductor 8 may be disposed in the conductor mounting portion 12 of each divided annular piece, or two or more conductors 8 may be disposed.
  • the turntable device according to the present embodiment is also arranged so as to be in contact with both the floor surface portion 1 and the turntable portion 2, and maintains the contact when the turntable portion 2 rotates.
  • the conductor 8 which rolls with respect to both 1 and 2 is provided.
  • the conductor 8 is not fixed in any of the floor portion 1 and the turntable portion 2 and rolls with respect to both 1 and 2. Therefore, wear of the fixing part for fixing the conductor 8 does not occur, and maintenance of the fixing part becomes unnecessary. That is, it contributes to simplification of configuration, ease of maintenance, and cost reduction.
  • a plurality of conductors 8 are arranged in the conductor mounting portion 12. Accordingly, the floor surface portion 1 and the turntable portion 2 can be electrically connected to each other at a plurality of locations, and the same electric potential between the floor surface portion 1 and the turntable portion 2 can be improved. Moreover, the electromagnetic wave shielding effect in the gap 3 is also improved.
  • the conductor 8 is a sphere, the conductor 8 can be smoothly rolled in the conductor mounting portion 12, and the influence of electromagnetic wave measurement / test on the specimen can be reduced. it can. Further, the wear of the conduction mechanism can be further reduced.
  • the floor surface part 1 has the 1st member 1B which has electroconductivity
  • the turntable part 2 has 2nd member 2B which has electroconductivity. have.
  • the conductor mounting part 12 is formed under the gap 3 by the first member 1B and the second member 2B.
  • a small slit 11 having a width smaller than the width of the gap 3 is formed at the bottom of the conductor mounting portion 12 so that the first member 1B and the second member 2B do not directly contact each other.
  • the conduction mechanism (the spherical conductor 8 and the first and second members 1B and 2B) are disposed below the gap 3 (that is, on the space 5 side). Therefore, even if the specimen is dragged (or rolled) between the floor 1 and the turntable 2, contact between the conductive mechanisms 1B, 2B, 8 and the specimen is completely prevented. can do.
  • a plurality of partition portions connected to only one side of the floor portion 1 and the turntable portion 2 are disposed in the annular conductor mounting portion 12,
  • the annular conductor mounting portion 12 is partitioned into a plurality of annular pieces by arranging the partition portion.
  • FIG. 7 is a cross-sectional view illustrating a configuration of a conduction mechanism included in the turntable device according to the present embodiment.
  • FIG. 7 is an enlarged view showing a part of the gap 3 shown in FIGS. 1 and 2 (including a part of the peripheral configuration).
  • the turntable device according to the present embodiment is additionally provided with a flange 15.
  • the flange portion 15 covers the conductor mounting portion 12 from above.
  • the collar part 15 is comprised from resin etc. which do not have electroconductivity, for example.
  • the flange portion 15 is connected to the floor surface portion 1 side and is not connected to the turntable portion 2 side.
  • the collar part 15 is connected to the turntable part 2 side, and does not need to be connected to the floor surface part 1 side.
  • the flange portion 15 is connected to the external 1A side, but unlike the configuration of FIG. 7, the flange portion 15 may be connected to the first member 1B side. Also, in the case where the flange portion 15 is connected to the turntable portion 2 side, the flange portion 15 may be connected to the main exterior 2A side, or the flange portion 15 is connected to the second member 2B side. It may be connected.
  • the gap 3 has an annular shape, and the first member 1 ⁇ / b> B, the second member 2 ⁇ / b> B, and the flange portion 15 having the cross-sectional configuration of FIG. It is arranged.
  • the turntable device includes the flange portion 15 that covers the conductor placement portion 12 from above.
  • the collar part 15 made of resin, it is possible to prevent the collar part 15 from functioning as an antenna for receiving electromagnetic waves.
  • FIG. 8 is a cross-sectional view showing a configuration of a conduction mechanism provided in the turntable device according to the present embodiment.
  • FIG. 8 is an enlarged view showing a part of the gap 3 shown in FIGS. 1 and 2 (including the peripheral structure of the part).
  • a conductor 8A is provided as a conduction mechanism.
  • the conductor 8A is disposed so as to contact both the floor surface portion 1 and the turntable portion 2. And when the turntable part 2 rotates, the conductor 8A rolls with respect to the floor surface part 1, and also rolls with respect to the turntable part 2, maintaining the said contact. That is, the conductor 8A is not fixed anywhere and can freely roll in the gap 3.
  • the conductor 8A has a truncated cone shape.
  • the frustoconical shape is a trapezoid whose section is symmetrical, and is composed of a circular top surface and a circular bottom surface.
  • a circular shape having a large diameter out of two circular portions is referred to as a “bottom surface” and a circular shape having a small diameter is referred to as an “upper surface”. In, the same treatment is performed).
  • a more specific configuration of the conduction mechanism according to the present embodiment is as follows.
  • the floor portion 1 is composed of a main body portion 1L and a first member 1N
  • the turntable portion 2 is composed of a main body portion 2L and a second member 2N.
  • the main body 1L has a flat plate shape having a predetermined thickness
  • the main body 2L has a disk shape having a predetermined thickness.
  • the entire portion visible from above the floor surface portion 1 is the main body portion 1L
  • the entire portion visible from above the turntable portion 2 is the main body portion 2L.
  • the gap 3 a part of the first member 1N and a part of the second member 2N are visible from above.
  • the thickness of the main body 1L and the thickness of the main body 2L are the same.
  • first member 1N has a flat plate shape having a predetermined thickness
  • second member 2B also has a flat plate shape having a predetermined thickness.
  • the thickness of the first member 1N and the thickness of the second member 2N are the same.
  • both the main body 1L and the main body 2L have conductivity
  • both the first member 1N and the second member 2N have conductivity
  • the first member 1N is connected and fixed to the lower surface side of the main body 1L near the gap 3. By the connection fixing, the main body 1L and the first member 1N are electrically connected.
  • a second member 2N is connected and fixed to the lower surface side of the main body 2L near the gap 3. By the connection fixing, the main body 2L and the second member 2N are electrically connected.
  • the end of the first member 1N projects to the gap 3 side from the end of the main body 1L, and the end of the second member 2N is the end of the main body 2L. Rather than the gap 3 side.
  • the dimension protruding to the gap 3 side of the first member 1N and the dimension protruding to the gap 3 side of the second member 2N are the same.
  • the gap 3 has an annular shape
  • the first member 1N and the second member 2N having the cross-sectional configuration of FIG. 8 are arranged in a circular shape along the annular shape. ing.
  • a step-shaped gap 3 is formed such that the width becomes narrower in the downward direction ( (See FIG. 8).
  • the conductor 8A is disposed in the gap 3 having the step shape.
  • the conductor 8A has a truncated cone shape.
  • the conductor 8 ⁇ / b> A is in contact with the peripheral end portion of the floor surface portion 1 and the peripheral end portion of the turntable portion 2. By the contact, the floor surface portion 1 and the turntable portion 2 are electrically connected via the conductor 8A.
  • the upper surface 8a of the truncated cone-shaped conductor 8A is on the lower side in the gap 3
  • the bottom surface 8d of the truncated cone-shaped conductor 8A is on the upper side in the gap 3.
  • the bottom surface 8 d of the conductor 8 ⁇ / b> A is located at a position lower than the upper surface of the floor surface portion 1 and the upper surface of the turntable portion 2.
  • the conductor 8A is made of a conductive material such as copper, brass or iron. Further, the conductor 8A has a size that fits in the gap 3. For example, the diameter of the upper surface 8a and the bottom surface 8d of the conductor 8A is about several mm. Here, as shown in FIG. 9, the diameter of the upper surface 8a of the conductor 8A is smaller than the diameter of the bottom surface 8d of the conductor 8A.
  • the diameter of the bottom surface 8d is smaller than the distance between the main body 1L and the main body 2L and larger than the distance between the first member 1N and the second member 2N.
  • the diameter of the upper surface 8a is smaller than the distance between the first member 1N and the second member 2N.
  • the conductor 8A is disposed so as to come into contact with both the peripheral end portion of the floor surface portion 1 and the peripheral end portion of the turntable portion 2. And when the turntable part 2 rotates, the conductor 8A is the peripheral end part of the floor surface part 1 (more specifically, the periphery of the first member 1N constituting the floor surface part 1 while maintaining the contact). It rolls with respect to the peripheral end portion of the turntable portion 2 (more specifically, the peripheral end portion of the second member 2N constituting the turntable portion 2).
  • the conductors 8A there are a plurality of conductors 8A, and the conductors 8A are arranged side by side along the circumferential direction in the annular gap 3 shown in the plan view of FIG. .
  • the adjacent conductors 8A may be in contact with each other, or the adjacent conductors 8A may be spaced apart.
  • a plurality of partition portions may be evenly arranged in the annular gap 3.
  • the partition portion is connected to the floor surface portion 1 side and is not connected to the turntable portion 2 side.
  • the partition part is connected to the turntable part 2 side, and is not connected with the floor surface part 1 side.
  • the partition section partitions the annular gap 3 into at least two or more annular pieces in plan view. Then, conductors 8A are arranged in the gaps 3 of the partitioned annular pieces.
  • each conductor 8A freely rolls and moves within the gap 3 between the annular pieces on which the conductors 8A are disposed.
  • one conductor 8A may be arranged in the gap 3 of each divided annular piece, or two or more conductors 8A may be arranged.
  • the turntable device according to the present embodiment is also arranged so as to be in contact with both the floor surface portion 1 and the turntable portion 2, and maintains the contact when the turntable portion 2 rotates.
  • the electric conductor 8A which rolls with respect to both 1 and 2 is provided.
  • the conductor 8A is not fixed in any of the floor portion 1 and the turntable portion 2, and rolls with respect to both 1 and 2. Therefore, wear of the fixing part for fixing the conductor 8A does not occur, and maintenance of the fixing part becomes unnecessary. That is, it contributes to simplification of configuration, ease of maintenance, and cost reduction.
  • a plurality of conductors 8A are arranged in the gap 3. Accordingly, the floor surface portion 1 and the turntable portion 2 can be electrically connected to each other at a plurality of locations, and the same electric potential between the floor surface portion 1 and the turntable portion 2 can be improved. Moreover, the electromagnetic wave shielding effect in the gap 3 is also improved.
  • the conductor 8A has a truncated cone shape and is disposed in the gap 3.
  • the configuration of the conduction mechanism is extremely simple. As a result, the cost of the conduction mechanism can be reduced, and since the configuration is simple, maintenance is also facilitated. Further, since the conductor 8A has a truncated cone shape, the conductor 8A can smoothly roll in the gap 3. Therefore, the influence of the electromagnetic wave measurement / test on the specimen can be reduced. Further, the wear of the conduction mechanism can be further reduced.
  • a staircase-shaped gap 3 is formed by the peripheral end portion of the floor surface portion 1 and the peripheral end portion of the turntable portion 2 so that the width becomes narrower as it goes downward.
  • the upper surface 8a of the conductor 8A is on the lower side of the gap 3, and the bottom surface 8d of the conductor 8A is at a position lower than the upper surface of the floor surface portion 1 and the upper surface of the turntable portion 2.
  • a plurality of partition portions connected to only one of the floor surface portion 1 and the turntable portion 2 are disposed in the annular gap 3, and the partition portions are arranged. Accordingly, the annular gap 3 is partitioned into at least two or more annular pieces.
  • the partition portion can prevent an unintended inclination of the truncated conical conductor 8A.
  • FIG. 10 is a cross-sectional view illustrating a configuration of a conduction mechanism included in the turntable device according to the present embodiment.
  • FIG. 10 is an enlarged view showing a part of the gap 3 shown in FIGS. 1 and 2 (including a part of the peripheral configuration).
  • a conductor 8 is provided as a conduction mechanism.
  • the conductor 8 is disposed so as to contact both the floor surface portion 1 and the turntable portion 2. And when the turntable part 2 rotates, the said conductor 8 rolls also with respect to the floor table part 1 and also with respect to the turntable part 2, maintaining the said contact. That is, although the conductor 8 is gripped, the conductor 8 can freely roll in the space formed by the depressions 25 and 26 described later.
  • a more specific configuration of the present embodiment is as follows.
  • the floor portion 1 is composed of a main body portion 1P and a first member 1Q
  • the turntable portion 2 is composed of a main body portion 2P and a second member 2Q.
  • the main body 1P has a flat plate shape having a predetermined thickness
  • the main body 2P has a disk shape having a predetermined thickness.
  • the entire portion visible from above the floor portion 1 is the main body portion 1P
  • the entire portion visible from above the turntable portion 2 is the main body portion 2P.
  • below the gap 3 a part of the second member 2Q is visible from above.
  • the thickness of the main body 1P and the thickness of the main body 2P are the same. Moreover, both the main-body part 1P and the main-body part 2P have electroconductivity, and both the 1st member 1Q and the 2nd member 2Q have electroconductivity.
  • the first member 1 ⁇ / b> Q has a flat portion and a first recess 25.
  • the cross-sectional shape of the first depression 25 is an arc shape (that is, rounded).
  • the flat surface portion of the first member 1Q is fixed to the lower surface of the main body portion 1P in the vicinity of the gap 3.
  • the 1st hollow 25 is formed in the side facing a plane part.
  • the second member 2 ⁇ / b> Q includes an extending portion 20 having an L-shaped cross section, an elastic member 21, and a grip portion 22.
  • One end of the extended portion 20 is fixed to the lower surface of the main body portion 2P near the gap 3. Further, as illustrated in FIG. 10, the extending portion 20 extends from the main body portion 2 ⁇ / b> P to the lower portion of the main body portion 1 ⁇ / b> P so as to exist below the gap 3. Near one end of the extended portion 20, one end of the elastic member 21 is connected.
  • the elastic member 21 biases the gripping force of the conductor 8 by the first member 1Q and the gripping portion 22.
  • a grip portion 22 is connected to the other end of the elastic member 21.
  • a second recess 26 is provided on the side of the grip portion 22 that faces the first member 1Q.
  • the cross-sectional shape of the second depression 26 is an arc shape (that is, rounded).
  • the main body 1P and the first member 1Q are electrically connected, and the main body 2P and the second member 2Q are electrically connected.
  • the extending portion 20, the elastic member 21, and the grip portion 22 are electrically connected. Therefore, the floor surface portion 1 and the turntable portion 2 are electrically connected by the state in which the conductor 8 is gripped by the first member 1Q and the second member 2Q (more specifically, the grip portion 22). (That is, the floor portion 1 and the turntable portion 2 are electrically connected via the conductor 8).
  • the structure composed of the first member 1 ⁇ / b> Q and the second member 2 ⁇ / b> Q that holds the conductor 8 has the gap 3 from below (space 5). Covering from the side).
  • the conductor 8 is a sphere, and the conductor 8 is formed by the first depression 25 of the first member 1Q and the second depression 26 of the second member 2Q (more specifically, the grip portion 22). It is gripped (see FIG. 10). As described above, the second member 2Q includes the elastic member 21 that biases the grip of the conductor 8.
  • the gap 3 has an annular shape, and the structure composed of the first member 1 ⁇ / b> Q and the second member 2 ⁇ / b> Q having the sectional configuration of FIG. It is arranged in a circular shape. Therefore, the space formed by the first recess 25 and the second recess 26 facing each other is naturally annular.
  • the conductor 8 is made of a conductive material such as copper, brass or iron.
  • the diameter of the conductor 8 that is a sphere is, for example, about several mm.
  • An annular space is formed in a state where the first depression 25 and the second depression 26 are joined together, but the conductor 8 is slightly larger than the dimension in the holding direction of the space. Therefore, in the state where the conductor 8 is gripped by the first member 1Q and the second member 2Q, the first member 1Q and the second member 2Q (more specifically, the grip portion 22) are On the facing side, a small gap exists between the members 1Q and 2Q (see FIG. 10).
  • the conductor 8 is disposed so as to be in contact with both the first member 1Q constituting the floor surface portion 1 and the second member 2Q constituting the turntable portion 2. And when the turntable part 2 rotates, the conductor 8 is the floor surface part 1 (more specifically, the 1st hollow 25 of the 1st member 1Q which comprises the floor surface part 1), maintaining the said contact. ) With respect to the turntable portion 2 (more specifically, the second depression 26 of the gripping portion 22 which is a component of the second member 2Q constituting the turntable portion 2). Also rolls.
  • the conductors 8 are arranged side by side.
  • the adjacent conductors 8 may be in contact with each other, or the adjacent conductors 8 may be spaced apart.
  • a partition portion may be disposed in the annular space.
  • the partition portion is connected to the floor surface portion 1 side (more specifically, the first member 1Q side), and is connected to the turntable portion 2 side (more specifically, the grip portion 22 side).
  • the partition portion is connected to the turntable portion 2 side (more specifically, the holding portion 22 side) and connected to the floor surface portion 1 side (more specifically, the first member 1Q side). It has not been.
  • the partition section divides the annular space into at least two or more annular pieces in plan view. Then, the conductor 8 is arranged in each of the divided areas.
  • each conductor 8 can freely roll and move within the region of the annular piece in which it is disposed.
  • one conductor 8 may be arranged in the region of each divided annular piece, or two or more conductors 8 may be arranged.
  • annular space has a bead shape, and the spherical conductors 8 may be disposed in each of the bead-shaped regions.
  • the turntable device according to the present embodiment is also arranged so as to be in contact with both the floor surface portion 1 and the turntable portion 2, and maintains the contact when the turntable portion 2 rotates.
  • the conductor 8 which rolls with respect to both 1 and 2 is provided.
  • the conductor 8 is gripped in an annular space formed by the first recess 25 and the second recess 26 facing each other, but freely rolls in the annular space. Can do.
  • it does not have the member (namely, rotation fixed shaft) which the rolling of the conductor 8 supports. Therefore, the rotating fixed shaft does not wear and maintenance of the rotating fixed shaft becomes unnecessary. That is, it contributes to simplification of configuration, ease of maintenance, and cost reduction.
  • a plurality of conductors 8 are arranged in the annular space. Accordingly, the floor surface portion 1 and the turntable portion 2 can be electrically connected to each other at a plurality of locations, and the same electric potential between the floor surface portion 1 and the turntable portion 2 can be improved.
  • the conductor 8 is a sphere, the conductor 8 can smoothly roll in the annular space, and the influence on the electromagnetic wave measurement / test is reduced and the conduction mechanism is further worn. Reduction is possible.
  • the structure constituted by the first member 1Q and the second member 2Q that holds the conductor 8 covers the gap 3 from below.
  • electromagnetic waves generated by the motor 4 or the like can be prevented from entering the room 50 from the space 5 through the gap 3. That is, in the invention according to the present embodiment, the electromagnetic wave shielding effect in the gap 3 is significantly improved.
  • the first member 1Q and the second member 2Q (more specifically, in a state where the conductor 8 is gripped by the first member 1Q and the second member 2Q).
  • the gap with the gripping part 22) can be designed extremely small. This is different from the turntable portion 2 and the floor surface portion 1 of 10 m or more, and the dimensions of the first member 1Q and the second member 2Q are several mm to several cm, and the diameter of the conductor 8 is also several. This is because the processing accuracy is easily improved with these small members, and the gap can be reduced to about 1 mm or less (that is, the conductor 8 or the like is larger than the large member such as the main body portion 2P of the turntable portion 2). Smaller members are easier to improve processing accuracy).
  • the width of the gap 3 is about 6 to 7 mm.
  • the processing accuracy is greatly improved, and the gap is 1 mm or less. It becomes possible to do.
  • the conductor 8 that is a sphere and the structure that holds the conductor 8 are disposed below the main body portions 1P and 2P. Therefore, even if the test body is dragged (or rolled) between the floor surface section 1 and the turntable section 2, contact between the above-described structure and the test body can be completely prevented.
  • the conductor 8 is gripped by the first member 1Q and the grip portion 22 by the urging force of the elastic member 21. Therefore, contact between the conductor 8 and the floor portion 1 (more specifically, the first member 1Q) and contact between the conductor 8 and the turntable portion 2 (more specifically, the second member 2Q) Thus, even if the turntable unit 2 is rotated, the same potential can be reliably maintained in the floor surface unit 1 and the turntable unit 2 continuously.
  • a plurality of partition portions connected to only one side of the floor portion 1 and the turntable portion 2 are disposed in an annular space composed of the depressions 25 and 26, By the arrangement of the partition part, the annular space is partitioned into at least two or more annular pieces.
  • the conductive portion 8 is gripped by using the biasing force of the elastic member 21 below the floor portion 1 (see FIG. 10).
  • a configuration in which the conductor 8 is gripped using the biasing of the elastic member below the turntable portion 2 may be employed.
  • a member similar to the first member 1Q is connected to the lower surface of the main body portion 2P near the gap 3
  • a member similar to the second member 2Q is connected to the lower surface of the main body portion 1P near the gap 3. Connected.
  • the member similar to the 2nd member 2Q is extended over the main-body part 2P from the main-body part 1P, and the elastic member and holding part which the same member as the 2nd member 2Q has are the main-body-part 2P side. It is arranged.
  • a resin flange 15 shown in FIG. 11 may be adopted instead of the flange 15 shown in FIG. 7, a resin flange 15 shown in FIG. 11 may be adopted.
  • the flange portion 15 has an L-shaped cross-sectional shape, and the flange portion 15 is connected to the upper surface of the main body portion 1A and extends over the upper surface of the main body portion 2A.
  • the flange portion 15 completely covers the gap 3 from above.
  • the flange portion 15 is not connected to the turntable portion 2 side.
  • the collar part 15 of the form shown in FIG. 11 may be connected to the main body part 2A side. In this case, the flange 15 is not connected to the main body 1A.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Elimination Of Static Electricity (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Electric Ovens (AREA)

Abstract

L'invention concerne un plateau tournant comportant une partie de surface de sol (1), une partie de plateau tournant (2), et un élément électroconducteur (8, 8A). La partie de surface de sol (1) et la partie de plateau tournant (2) possèdent une fonction de protection contre les ondes électromagnétiques. La partie de plateau tournant (2) est disposée de sorte qu'un écartement est formé entre la partie de plateau tournant (2) et la partie de surface de sol, et la partie de plateau tournant (2) tourne par rapport à la partie de surface de sol (1). L'élément électroconducteur (8, 8A) touche à la fois la partie de surface de sol (1) et la partie de plateau tournant (2), et roule par rapport à l'un et l'autre de ces composants (1, 2) lorsque la partie de plateau tournant (2) tourne.
PCT/JP2013/050038 2013-01-07 2013-01-07 Dispositif à plateau tournant Ceased WO2014106902A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2014555414A JP5922258B2 (ja) 2013-01-07 2013-01-07 ターンテーブル装置
CN201380069178.5A CN104903733B (zh) 2013-01-07 2013-01-07 转台装置
PCT/JP2013/050038 WO2014106902A1 (fr) 2013-01-07 2013-01-07 Dispositif à plateau tournant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/050038 WO2014106902A1 (fr) 2013-01-07 2013-01-07 Dispositif à plateau tournant

Publications (1)

Publication Number Publication Date
WO2014106902A1 true WO2014106902A1 (fr) 2014-07-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/050038 Ceased WO2014106902A1 (fr) 2013-01-07 2013-01-07 Dispositif à plateau tournant

Country Status (3)

Country Link
JP (1) JP5922258B2 (fr)
CN (1) CN104903733B (fr)
WO (1) WO2014106902A1 (fr)

Cited By (1)

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WO2021110914A1 (fr) * 2019-12-06 2021-06-10 TDK Europe GmbH Dispositif hydraulique d'essai de la compatibilité électromagnétique et/ou d'autres caractéristiques d'un moteur électrique

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JPH0348775U (fr) * 1988-06-01 1991-05-10
JPH04106773U (ja) * 1991-02-27 1992-09-14 株式会社アドバンテスト 電磁波測定用ターンテーブルの接地構造
JPH0514941U (ja) * 1991-08-12 1993-02-26 株式会社アドバンテスト 埋め込み型ｅｍｃ用ターン・テーブル
JPH10221392A (ja) * 1997-02-03 1998-08-21 Tanabe:Kk ターンテーブル装置
JP2000187052A (ja) * 1998-12-21 2000-07-04 Tdk Corp タ―ンテ―ブル装置

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JP3280861B2 (ja) * 1996-07-11 2002-05-13 宏之 新井 電磁波環境試験用の電波反射箱及びそれを用いる電磁波環境試験方法
JP2001324524A (ja) * 2000-05-12 2001-11-22 Nec Corp 不要輻射の自動測定方法および装置
JP4338292B2 (ja) * 2000-05-23 2009-10-07 Ｔｄｋ株式会社 ノイズ測定システム、ノイズ測定方法およびノイズ測定用プログラムを記録した記録媒体
JP2004101300A (ja) * 2002-09-06 2004-04-02 Murata Mfg Co Ltd 電磁波測定装置及び電磁波測定方法
JP4915050B2 (ja) * 2005-03-18 2012-04-11 ソニー株式会社 電磁界測定装置及び電磁界測定方法
JP2007271317A (ja) * 2006-03-30 2007-10-18 Murata Mfg Co Ltd Ｅｍｉ測定装置及びｅｍｉ測定方法
CN100498352C (zh) * 2007-06-27 2009-06-10 浙江大学 天线辐射特性实验装置

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Publication number Priority date Publication date Assignee Title
JPH01120398U (fr) * 1988-02-05 1989-08-15
JPH0348775U (fr) * 1988-06-01 1991-05-10
JPH0379517A (ja) * 1989-08-11 1991-04-04 Safetech Pty Ltd ターンテーブル
JPH04106773U (ja) * 1991-02-27 1992-09-14 株式会社アドバンテスト 電磁波測定用ターンテーブルの接地構造
JPH0514941U (ja) * 1991-08-12 1993-02-26 株式会社アドバンテスト 埋め込み型ｅｍｃ用ターン・テーブル
JPH10221392A (ja) * 1997-02-03 1998-08-21 Tanabe:Kk ターンテーブル装置
JP2000187052A (ja) * 1998-12-21 2000-07-04 Tdk Corp タ―ンテ―ブル装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021110914A1 (fr) * 2019-12-06 2021-06-10 TDK Europe GmbH Dispositif hydraulique d'essai de la compatibilité électromagnétique et/ou d'autres caractéristiques d'un moteur électrique

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CN104903733A (zh) 2015-09-09
JP5922258B2 (ja) 2016-05-24
JPWO2014106902A1 (ja) 2017-01-19
CN104903733B (zh) 2017-04-26

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