JP2008235730A - Testing device for electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a testing device for electronic equipment capable of precisely testing the electronic equipment improved in radio wave shielding performance of a test box. <P>SOLUTION: The testing device 1 for the electronic equipment comprises: the test box 10 into which the electronic equipment P is put and which has an opening 11 for making the outside and the inside communicate with each other; and a door 20 attached to the test box 10 through a hinge to open and close the opening 11. The testing device 1 for the electronic equipment is further provided with: a metallic finger 30 attached to the side face of an erected plate 31 provided on the peripheral edge 22 of the door 20 which is the abutting part of the test box 10 and the door 20; and packing 40 with a radio wave shielding property which is attached to the peripheral edge 22 of the door 20. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to an electronic apparatus test apparatus for performing a test on an electronic apparatus such as a mobile phone.

  In general, an electronic device such as a mobile phone may be subjected to a wireless connection test (hereinafter referred to as a test) using a radio wave as to whether or not the device operates or functions normally after manufacture or repair. Conventionally, in order to perform an accurate reception capability test, such a test is performed in a large special room called an anechoic chamber (an anechoic chamber) where external radio waves are blocked, or a shield box (a radio wave shielding box). ) Was done inside the box.

  For example, Patent Document 1 discloses an outer casing having an inner casing made of aluminum that reflects radio waves, a front panel on which a tray on which a mobile phone is placed is fixed and an opening formed in the casing is closed. A U-shaped deep groove provided on the outer periphery of the front panel, a partition plate provided in the opening of the inner housing, and fitted in the U-shaped deep groove to form a radio wave maze, and provided on the outer periphery of the partition plate A shield box having a finger spring, an L-shaped angle fixed to the inner periphery of the partition plate, and an EMI gasket provided at the bottom of the U-shaped deep groove of the front panel is disclosed.

Further, for example, Patent Document 2 discloses a test box body having an opening, an openable / closable door (hinge type) having a window in which an ITO (Indium Tin Oxide) film is formed on one side of glass, An electronic device test box mainly including a cable wiring waveguide provided on an upper surface of a test box body is disclosed.
JP 2005-252015 (paragraphs 0019 to 0028, FIGS. 1 to 3) JP 2006-153841 A (paragraph 0051, paragraph 0083, FIG. 10)

  By the way, in recent years, with the improvement in performance and sensitivity of electronic devices, there is an increasing need for a test apparatus for electronic devices with excellent radio wave shielding performance that can accurately test electronic devices. .

  In the shield box described in Patent Document 1, the finger spring is provided on the side surface of the U-shaped deep groove and the inner periphery of the partition plate when the mobile phone is placed on the tray and the front panel is slid and closed. The EMI gasket provided on the front panel and the EMI gasket provided at the bottom of the U-shaped deep groove are in contact with the tip of the partition plate, respectively, so that the radio waves passing through the gap between the front panel and the partition plate are shielded in triple. It can be blocked by the structure.

  However, in the electronic equipment test box having a hinged door as described in Patent Document 2 described above, a radio wave shielding structure including an EMI gasket, a conductive rubber packing, or the like at a contact portion between the test box body and the door. However, it has not been able to sufficiently meet the radio wave shielding performance required in recent years. Moreover, it is not realistic to apply the radio wave shielding structure (door structure) described in Patent Document 1 to the door of a large room (test room) such as an anechoic chamber.

  Accordingly, the present invention provides an electronic apparatus test apparatus capable of precisely performing an electronic apparatus test with improved radio wave shielding performance of a test box (test room) in order to solve such problems. Let it be an issue.

  In order to solve the above-described problems, an electronic apparatus test apparatus according to the present invention includes a test box in which an electronic apparatus is placed inside and at least one opening communicating the outside with the inside, and a hinge to the test box. And a door that opens and closes the opening, and is attached to the opening edge of the test box or the peripheral edge of the door, which is a contact portion between the test box and the door. It further comprises metal fingers and a packing having radio wave shielding properties attached to the peripheral edge of the door or the opening edge of the test box.

  According to such an electronic device testing apparatus, when the door is closed, the metal fingers abut on the peripheral edge of the door (or the opening edge of the test box), and the packing having radio wave shielding is provided. It contacts the opening edge of the test box (or the peripheral edge of the door). As a result, the gap between the test box and the door is closed, so that radio waves that try to enter from the contact portion between the test box and the door cause diffraction loss at the fingers and packing, and as a result, enter the contact portion. It is possible to effectively shield the radio wave to be tried.

Here, the diffraction loss means that the radio wave is reflected by a metal finger or the like and is not easily propagated to the traveling direction side of the radio wave (in this case, the inside of the test box).
Note that the test box of the electronic apparatus test apparatus according to the present invention includes a large room (test room) such as an anechoic chamber.

  Moreover, the test apparatus for electronic devices according to the present invention is characterized in that the finger is attached to a side surface of an upright plate provided at an opening edge of a test box or a peripheral edge of a door.

  According to such a test apparatus for electronic equipment, since the finger is attached to the side surface of the standing plate provided on the opening edge (or the peripheral edge of the door) of the test box, the peripheral edge (or the test) of the door when the door is closed. The restoring force of the finger that abuts on the opening edge of the box and deforms is perpendicular to the opening and closing direction of the door. With such a configuration, the door can be prevented from opening due to the restoring force of the fingers. Further, since the restoring force of the fingers is applied perpendicular to the door opening / closing direction, the door can be fixed in the closed state.

  Further, the electronic apparatus testing apparatus according to the present invention is characterized in that the packing is positioned on the outer peripheral side of the finger when the door is closed.

  According to such a test apparatus for electronic equipment, since the packing is positioned on the outer peripheral side of the finger when the door is closed, the shielding function by the finger and the shielding function by the packing work synergistically, and the test box It is possible to more effectively shield radio waves that are about to enter from the contact portion between the door and the door. Moreover, even if the shielding function of either the finger or the packing is lowered, the rapid shielding of the radio wave shielding performance of the electronic device test apparatus can be prevented by the other shielding function.

  In order to solve the above-mentioned problem, an electronic device test apparatus according to the present invention includes an electronic device placed inside, a test box having at least one opening communicating with the outside, and the test box. And a door for opening and closing the opening, and a test apparatus for an electronic device comprising: an opening edge of the test box which is a contact portion between the test box and the door; and a peripheral edge of the door An insertion piece formed on one side and an insertion groove formed on the other side into which the insertion piece is inserted when the door is closed, and the finger is attached to the inner peripheral side of the insertion piece or the insertion groove The packing is attached to the bottom of the insertion groove.

  According to such a test apparatus for electronic equipment, when the door is closed, the radio wave that is about to enter from the contact portion between the test box and the door causes diffraction loss in the insertion piece or the insertion groove. In addition, the gap between the test box and the door is closed by the finger abutting on the opening edge of the test box (or the peripheral edge of the door), and the packing is in contact with the tip of the insertion piece and the insertion piece. Since the gap with the insertion groove is closed, the radio wave entering from the contact portion causes diffraction loss in the fingers and packing. Thus, it is possible to effectively shield radio waves that are about to enter from the contact portion.

  In order to solve the above-mentioned problem, an electronic device test apparatus according to the present invention includes an electronic device placed inside, a test box having at least one opening communicating with the outside, and the test box. And a door for opening and closing the opening, and a test apparatus for an electronic device comprising: an opening edge of the test box which is a contact portion between the test box and the door; and a peripheral edge of the door An insertion piece formed on one side and an insertion groove formed on the other side into which the insertion piece is inserted when the door is closed, and the finger is attached to the inner peripheral side of the insertion piece or the insertion groove The packing is attached to both sides of the insertion piece.

  According to such a test apparatus for electronic equipment, when the door is closed, the radio wave that is about to enter from the contact portion between the test box and the door causes diffraction loss in the insertion piece or the insertion groove. In addition, the finger abuts the opening edge of the test box (or the peripheral edge of the door), and the packing abuts both sides of the insertion groove, thereby closing the gap between the test box and the door. The radio wave that tries to enter from the source causes diffraction loss at the fingers and packing. Thus, it is possible to effectively shield radio waves that are about to enter from the contact portion.

  The electronic apparatus testing apparatus according to the present invention is characterized in that a metal finger is attached to the inside of the insertion groove.

  According to such a test apparatus for electronic devices, since the metal fingers are further attached inside the insertion groove, the fingers come into contact with the insertion piece when the door is closed. As a result, the gap between the insertion piece and the insertion groove is closed, so that radio waves that try to enter from the contact portion between the test box and the door cause diffraction loss at the finger, and as a result, try to enter from the contact portion. Can be shielded more effectively.

  In the electronic apparatus testing apparatus according to the present invention, a metal finger is attached to the insertion piece.

  According to such a test apparatus for electronic devices, since the metal finger is further attached to the insertion piece, the finger comes into contact with the inside of the insertion groove when the door is closed. As a result, the gap between the insertion piece and the insertion groove is closed, so that radio waves that try to enter from the contact portion between the test box and the door cause diffraction loss at the finger, and as a result, try to enter from the contact portion. Can be shielded more effectively.

  The test apparatus for electronic equipment according to the present invention is characterized in that the test box includes a duct for preventing electromagnetic interference and conducting a cable connectable to the electronic equipment.

  According to such a test apparatus for electronic equipment, the test box is provided with a duct for connecting a cable connectable to the electronic equipment to the inside thereof while preventing the electromagnetic interference, and therefore the electromagnetic interference can be suitably prevented. At the same time, a cable can be wired from the outside to the inside of the test box. In addition, it is possible to shield the radio wave entering the cable insertion portion by the action of the duct as a waveguide.

  In the electronic apparatus testing apparatus according to the present invention, the cable is an optical cable for transmitting an optical signal.

  According to such a test apparatus for electronic devices, electromagnetic interference can be satisfactorily prevented by using an optical cable that transmits an optical signal as the cable.

  According to the present invention, the contact portion between the test box and the door is provided with a metal finger and a packing having radio wave shielding properties, so that it is possible to effectively shield radio waves entering from the outside of the test box. it can. Thereby, it is possible to provide an electronic device testing apparatus that is capable of precisely testing an electronic device and has excellent radio wave shielding performance.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate. FIG. 1 is an overall perspective view showing a test apparatus for electronic equipment.
As shown in FIG. 1, an electronic device test apparatus 1 includes a test box 10 having an electronic device P inserted therein and an opening 11 that communicates the outside with the inside, and a hinge (see FIG. Of the upright plate 31 provided on the peripheral edge 22 of the door 20 which is a contact portion between the test box 10 and the door 20. It further includes a metal finger 30 attached to the side surface and a packing 40 having radio wave shielding properties attached to the peripheral edge portion 22 of the door 20.

  Hereinafter, the structure of each part of the test box 10 and the door 20 will be described with reference to the drawings as appropriate. 2 is a sectional view taken along the line II-II in FIG. 1, FIG. 3 is a sectional view taken along the line III-III in FIG. 1, and FIG. 4 is a sectional view taken along the line IV-IV in FIG.

  As shown in FIGS. 2 to 4, the test box 10 is provided on a metal casing 110, a radio wave absorber 120 provided on the inner surface of the casing 110, and an inner surface side of the upper wall of the casing 110. The LED lamp 130, the EMI duct 140 provided on the back side of the housing 110, the metal honeycomb filter 150, the antenna 160 provided on the inner surface side of the side wall of the housing 110, and the electronic device P are fixed. The mounting unit 170 is provided.

  As shown in FIG. 2, the casing 110 is formed in a substantially rectangular parallelepiped box shape having a plurality of metal panels 111 welded to a frame (not shown) serving as a skeleton and having an opening 11 on the front side. ing. Since the casing 110 is formed of a conductive metal panel 111 and a frame (not shown), the casing 110 has a predetermined rigidity, is improved in durability, and is capable of receiving radio waves from the outside. Has shielding properties. Further, since the panel 111 and the frame (not shown) are joined by welding, the sealing property of the housing 110, that is, the shielding property of radio waves is enhanced.

  The metal forming the panel 111 and the frame (not shown) is not particularly limited in the present invention, and is not only a pure metal (for example, aluminum, steel, copper, etc.) but also an alloy (for example, aluminum alloy, stainless steel, etc.). May be. Note that when the panel 111 and the frame (not shown) are particularly formed of aluminum or an aluminum alloy, desired rigidity can be maintained and the weight of the housing 110 can be reduced. Further, since aluminum or aluminum alloy has a unique luster, the casing 111 is excellent in aesthetics.

  The radio wave absorber 120 is radiated inside the test box 10 by artificially absorbing the radio waves radiated from the electronic device P and the antenna 160 without reflecting them on the inner surface of the housing 110 (test box 10). This is to prevent the radio wave and the reflected radio wave from resonating, and is formed so as to cover the inner surface of each panel 111 as shown in FIG.

  The kind of the radio wave absorber 120 is not particularly limited in the present invention, and known radio wave absorbers can be widely used according to the characteristics of radio waves radiated inside. For example, any of a resistive radio wave absorber, a dielectric radio wave absorber, a magnetic radio wave absorber, and a radio wave absorber combining these can be used. It may be.

  Specifically, for example, (1) in order from the panel 111 side, a spacer having a thickness of λ / 4 (λ is the wavelength of a radio wave radiated inside the test box), and the surface resistance value is impedance of free space ( 376.7Ω), a λ / 4 wave absorber provided with a resin protective film, (2) in order from the panel 111 side, a resistance film sheet (impedance 1088Ω), spacer (38 mm), resistance A radio wave absorber capable of absorbing two types of radio waves (around 80 MHz and around 2050 MHz) including a membrane sheet (impedance 280Ω), a spacer (38 mm), and a protective film (aluminum plate or aluminum foil), (3) carbon powder and titanium oxide Dielectric wave absorbing sheet formed from compounds such as (4) Magnetic wave absorbing sheet formed from compounds such as ferrite and carbonyl iron (5) a radio wave absorbing sheet formed from a composite of a resin such as polyurethane and a magnetic material, and (6) a radio wave absorber (for example, Lumidion (registered trademark) ( Any of Toyo Service Co., Ltd.) can be used.

  The surface of the radio wave absorber 120 is preferably flat (a flat plate type). According to this, for example, the inside (volume) of the test box 10 is increased or the size of the test box 10 is reduced as compared with a case where a wave absorber such as a wave shape, a mountain shape, or a quadrangular pyramid shape is provided. Can be.

  The LED (Light Emitting Diode) lamp 130 is illumination for illuminating the inside of the test box 10, and is provided on the upper wall of the housing 110 as shown in FIG. 3. Thereby, for example, while testing the electronic device P, the electronic device P can be visually recognized by illuminating the inside of the test box 10. Unlike the fluorescent lamp, the LED lamp 130 hardly generates noise at the time of blinking, and thus can be suitably used as illumination for illuminating the inside of the test box 10.

  In addition, the installation position, the number, the arrangement, and the like of the LED lamps 130 can be set as appropriate, and are not limited to the configuration shown in FIG. Moreover, the illumination which illuminates the inside of the test box 10 is not limited to the LED lamp, and may be, for example, a halogen lamp or an incandescent lamp.

  The EMI (Electro Magnetic Interference) duct 140 is a duct for preventing the electromagnetic interference and inserting the cable 180 connected to the electronic device P or the like from the outside of the housing 110 to the inside. As shown in FIG. 4, the housing is fixed to the back surface of the housing 110 via a gasket 141 having insulation resistance.

  Accordingly, the cable 180 can be wired from the outside to the inside of the test box 10 through the EMI duct 140, and the cable is operated by the duct as a waveguide (does not propagate a radio wave having a wavelength longer than a predetermined wavelength). Since it is possible to shield the radio wave entering from the inserted portion of 180, the radio wave shielding property of the test box 10 can be suitably maintained.

  In addition, as shown in FIG. 2, electromagnetic interference can be suitably prevented by wiring the cable 180 so that a predetermined length (for example, 100 mm or more) of the cable 180 passes through the interior of the EMI duct 140. it can.

  As shown in FIG. 2, the cable 180 is coated with a noise absorber 181 that absorbs noise conducted through the cable 180 on the outer peripheral surfaces of the portion passing through the EMI duct 140 and the predetermined front and rear portions. Yes. Specifically, for example, EMI tape such as Lumidion (registered trademark) (Toyo Service Co., Ltd.) is wound around the cable 180 at a predetermined length (for example, 300 mm or more). Thereby, since radiation and propagation of noise from the cable 180 can be suppressed, the radio wave transmitted and received by the electronic device P can be controlled and measured with high accuracy by the test unit 190.

  Such an EMI duct 140 is made of die-casting, and as shown in FIG. 4, a plurality of concave grooves 142 are formed on the side through which the cable 180 passes (side of the housing 110). By passing the cable 180 through the concave groove 142, the cable 180 can be prevented from moving in the vertical direction inside the EMI duct 140, and the cable 180 can be aligned. Further, when a plurality of cables 180 are passed through the EMI duct 140, the space between the cables is filled with the side wall (metal) of the concave groove 142, so that the radio wave shielding property of the test box 10 can be suitably maintained. it can. Furthermore, since each cable can be wired in parallel, for example, when attaching a ground or the like that uniformly contacts each cable, the attachment becomes easy.

  The honeycomb filter 150 is an air supply / exhaust filter that communicates the outside and inside of the test box 10 and shields radio waves entering from the outside of the test box 10. As shown in FIG. It is fixed to the back surface of the housing 110 through a gasket 151 having the following. FIG. 5A is a perspective view showing a honeycomb filter.

  More specifically, as shown in FIG. 5A, the honeycomb filter 150 is formed as a honeycomb body made of metal (for example, made of aluminum, aluminum alloy, etc.) having a plurality of pores 152 having a regular hexagonal shape when viewed from the front. Through the plurality of pores 152, air circulation between the outside and inside of the test box 10 can be ensured, and for example, heat radiated from the electronic device P or the like can be exhausted. . Note that the shape of the pores 152 is not limited to a regular hexagon, and may be, for example, a circle or a rectangle.

  In addition, since the pore 152 is surrounded by the peripheral wall 153 having a function as a waveguide, it does not propagate a radio wave having a wavelength longer than a predetermined wavelength, so that the radio wave entering from the outside of the test box 10 is effective. Can be shielded. Note that the opening diameter of the through-hole 112 (see FIG. 4) formed on the back surface of the casing 110 (test box 10), the length of the honeycomb filter 150 (the length of the waveguide formed of the peripheral wall 153), and the narrow The opening diameter of the hole 152 (distance between two opposite sides of the regular hexagon) is set based on the wavelength of the radio wave that does not propagate inside the honeycomb filter 150.

  Here, in general, if the shape and dimension (length) of the opening of the waveguide are the same, the longer the waveguide, the higher the radio wave shielding performance. Although it depends on the shape of the opening of the waveguide, the limit frequency (predetermined frequency) of the radio wave that can be shielded by the waveguide increases as the area of the opening decreases.

  In addition, it is good also as a structure provided with the mesh filter 155 as shown in FIG.5 (b) instead of the above-mentioned honeycomb filter 150. FIG. FIG. 5B is a perspective view showing the mesh filter.

  The mesh filter 155 communicates the outside and inside of the test box 10 and shields radio waves entering from the outside of the test box 10. The mesh filter 155 has insulation resistance similar to the honeycomb filter. It fixes to the back surface of the housing | casing 110 through the gasket which has (refer FIG. 4).

  The mesh filter 155 is a mesh laminate in which a plurality of metal (for example, aluminum, aluminum alloy, etc.) meshes are stacked, and air circulation between the outside and the inside of the test box 10 is performed via the mesh. For example, the heat radiated from the electronic device P or the like can be exhausted. In addition, since a diffraction loss of radio waves occurs inside the metal mesh laminate, radio waves entering from the outside of the test box 10 can be effectively shielded.

  The antenna 160 is an antenna for transmitting and receiving radio waves to and from the electronic device P. As shown in FIGS. 2 to 4, an antenna waveguide 162 is connected to a connector 161 fixed to the side wall of the housing 110. Is provided. One end of a cable (not shown) is connected to the antenna 160, and this cable (not shown) is pulled out of the test box 10 via the antenna waveguide 162, and the other end is a radio wave. It is connected to a transmission / reception unit (not shown).

  The radio wave transmission / reception unit (not shown) radiates radio waves to the antenna 160, controls the frequency band and output of the radio waves, and measures radio waves from the electronic device P received by the antenna 160. It has a function.

  The connector 161 is for fixing the antenna waveguide 162, and is provided in a state of being fixed to the side wall of the housing 110. After the connector 161 is loosened and the antenna waveguide 162 is rotated to change the direction of the antenna 160, the connector 161 is tightened and the antenna waveguide 162 is fixed again. Can be changed.

Thereby, the axis of the antenna 160 is rotated so that the plane of polarization of the radio wave radiated from the antenna 160 and the plane of polarization of the radio wave radiated from the antenna Pa (see FIG. 3) of the electronic device P are parallel or perpendicular. Can be adjusted.
Note that the polarization plane refers to a plane in which the wave of an electric field vibrates in an electromagnetic wave, and an electromagnetic wave having a certain plane is called a linearly polarized wave. A radio wave radiated from a normal antenna is linearly polarized.

  As shown in FIGS. 2 and 4, another (preliminary) connector 163 may be provided on the left and right (horizontal direction) of the connector 161. As a result, the antenna waveguide 162 can be replaced at a desired position, so that the antenna 160 can be disposed at the desired position. Note that such connectors 163 may be provided above and below the connector 161 (vertical direction), or two or more connectors 163 may be provided above and below the connector 161.

  The antenna waveguide 162 is a metal waveguide formed of, for example, aluminum or an aluminum alloy that is bent in a cylindrical shape and an L shape, and has radio wave shielding properties. The antenna waveguide 162 communicates between the outside and the inside of the test box 10, and a cable (not shown) connected to the antenna 160 is wired in the hollow portion (inside). A rectangular ground plate 164 is fixed to the tip of the antenna waveguide 162. The cross section of the antenna waveguide 162 is not limited to a circle, and may be a polygon, for example.

  The specifications of the antenna waveguide 162 are set based on the wavelength of the radio wave that does not propagate inside the antenna waveguide 162. Specifically, the inner diameter and length of the antenna waveguide 162 are set so that radio waves having a wavelength longer than a predetermined wavelength do not propagate through the inside. Thereby, the radio wave shielding property of the test box 10 can be suitably maintained.

  In general, when an antenna is installed close to a metal object, eddy currents flow through the metal object, causing radio waves to be re-radiated, etc., and may interfere with the radio wave appropriately radiated to the specimen. . Therefore, as shown in FIG. 4, it is desirable to provide a magnetic sheet 165 on the side wall of the casing 110 in the vicinity of the antenna 160 (the antenna 160 is located between the magnetic sheet 165 and the electronic device P). Become). Thereby, it is possible to reduce the influence of re-radiation of radio waves due to the eddy current as described above.

  The mounting unit 170 is a unit for fixing the electronic device P inside the housing 110, and as shown in FIGS. 2 and 3, a fixing plate 171 provided so as to cover the entire bottom surface of the housing 110, The holding plate 171 is detachably fixed on the fixing plate 171 and includes a holding and fixing jig 172 that holds and fixes the electronic device P.

  As shown in FIG. 2, the fixing plate 171 is a plate member having a rectangular shape in plan view, and a plurality of bolt holes 171 a for fixing the holding and fixing jig 172 are formed. A plurality of bolt holes 171a are provided in parallel in the left-right direction in front view of the housing 110 so that the fixing position of the holding fixture 172 can be changed to a desired position. Note that a radio wave absorbing sheet having radio wave absorptivity may be provided on the fixing plate 171 or the fixing plate 171 may be formed of a member having radio wave absorptivity.

  As shown in FIG. 3, the holding and fixing jig 172 is an L-shaped member in a side view, and has a bolt hole 172a for screwing the bolt B into the bottom. The holding and fixing jig 172 is fixed to the fixing plate 171 by screwing the bolt B into the bolt hole 171a of the fixing plate 171 through the bolt hole 172a. An attachment plate 173 and a fixture 174 are attached to the holding fixture 172.

  The mounting plate 173 is a long plate material (see FIG. 2) and is fixed to the holding and fixing jig 172. The fixture 174 is a member that holds the electronic device P, and is formed with an insertion portion 174a that inserts and holds the electronic device P. The fixture 174 is detachably attached to the attachment plate 173 so that the attachment direction and attachment position of the electronic device P can be changed as desired.

  The test unit 190 (see FIG. 2) is a unit that controls and measures radio waves transmitted and received by the electronic device P, that is, whether or not the electronic device P is operating normally by detecting the reception state of the radio waves of the electronic device P. This is a unit that can determine whether or not and send various instructions to the electronic device P for operation.

  Such a test unit 190 can be connected to an electronic device P to be tested via a cable 180. Specifically, one end of the cable 180 is connected to the test unit 190, and the other end is drawn into the test box 10 via the EMI duct 140 and connected to the electronic device P. Note that a connector (not shown) for detachably connecting to the electronic device P is provided at the other end of the cable 180.

As shown in FIG. 2, the door 20 is rotatably attached to the side surface of the test box 10 via a hinge H, and can be opened and closed as appropriate. The door 20 is formed of a metal panel 201, and a window 210 is formed on the right side of the panel 201 when viewed from the front. Further, as shown in FIG. 2, the above-described radio wave absorber 120 is formed so as to cover the inner surface of the panel 201.
In addition, the metal which forms the panel 201 is not specifically limited by this invention, Not only a pure metal (for example, aluminum, steel, copper, etc.) but an alloy (for example, aluminum alloy, stainless steel, etc.) may be sufficient.

  The window 210 includes a rectangular glass plate 211 having transparency to visible light. Thereby, since the inside of the test box 10 can be visually recognized from the outside through the window 210 (glass plate 211) while performing the test of the electronic device P, for example, the electronic device P caused by receiving the radio wave It is possible to confirm whether or not the incoming call lamp is lit.

  The glass plate 211 has radio wave reflectivity (blocking property) in order to prevent radio waves from coming and going through the window 210 (glass plate 211). Thereby, the radio wave shielding property of the test box 10 can be suitably maintained. As such a glass plate 211, for example, a glass plate 211 having an ITO (Indium Tin Oxide) film formed on at least one surface thereof can be used.

  Further, as shown in FIG. 2, a glass plate 211 has a packing 212 (for example, conductive material) having radio wave shielding properties in a concave groove 203 provided around a window opening 202 formed in the door 20. It is fixed via rubber packing or the like. Thereby, since the shielding property of the electromagnetic wave in the peripheral part of the window 210 (glass plate 211) can be ensured, the shielding property of the electromagnetic wave of the test box 10 can be suitably maintained.

When radio waves radiated from the electronic device P, the antenna 160, etc. are directly irradiated on the window 210 (glass plate 211) inside the test box 10, the radio waves are reflected on the surface of the window 210 (glass plate 211). Therefore, it is desirable to provide the window 210 at a position where the radio waves radiated from the electronic device P, the antenna 140, etc. are not irradiated as much as possible.
Here, the radio wave resonance phenomenon refers to a phenomenon in which when radio waves are radiated from an antenna or the like inside a test box having radio wave shielding properties, the radio waves are repeatedly reflected on the inner wall surface of the test box to cause interference. .

As described above, the opening edge 12 of the test box 10 and / or the peripheral edge 22 of the door 20, which is a contact portion between the test box 10 and the door 20 described above, emits radio waves from the outside when the door 20 is closed. A radio wave shielding structure for shielding is formed.
Next, an embodiment of the radio wave shielding structure will be described with reference to the drawings as appropriate. The radio wave shielding structures shown in FIGS. 1, 2, and 4 are radio wave shielding structures according to a first embodiment described later.

[First Embodiment]
FIG. 6A is a schematic diagram showing a state in which the door is opened, and FIG. 6B is a schematic diagram showing a state in which the door is closed.
As shown in FIG. 6A, the radio wave shielding structure according to the first embodiment is a side surface of a standing plate 31 provided on the peripheral edge 22 of the door 20 that is a contact portion between the test box 10 and the door 20. The metal finger 30 attached to the door 20 and the packing 40 having a radio wave shielding property attached to the peripheral portion 22 of the door 20.

  The finger 30 is also called a shield finger, a finger strip, or the like. In the present embodiment, a leaf spring formed by curving a portion corresponding to a comb tooth of a substantially comb-shaped belt-like metal plate in an arc shape in cross section. It is a member, and is biased in the direction perpendicular to the mounting surface, and has radio wave shielding properties. The finger 30 has an outer periphery of an upright plate 31 made of a metal (for example, made of aluminum, aluminum alloy, etc.) having an L-shaped cross-section and fixed to the entire periphery of the peripheral edge portion 22 of the door 20 by, for example, welding. It is attached to the side surface.

  The metal that forms such a finger 30 is not particularly limited in the present invention, and may be an alloy as well as a pure metal. In particular, it is desirable to use a copper alloy. Since the copper alloy mainly composed of copper has high electrical conductivity, the radio wave shielding property of the finger 30 can be improved. Further, since the copper alloy has excellent elastic performance, the contact resistance can be reduced. Examples of such copper alloys include beryllium copper alloys.

  The packing 40 is obtained by coating a sponge material having elasticity (cushioning property) with a conductive fabric, and has radio wave shielding properties. This packing 40 is attached to the outer peripheral side of the finger 30 (standing plate 31) provided on the entire periphery of the peripheral edge portion 22 of the door 20. In addition, as a conductive fabric, what plated the fiber with nickel etc. are mentioned. Further, it is desirable that the permanent set rate of the packing is 60% or less.

  In the radio wave shielding structure according to the first embodiment having such a configuration, as shown in FIG. 6B, when the door 20 is closed, the fingers 30 are formed on the opening edge portion 12 (bending portion 13) of the test box 10. The packing 40 elastically contacts the opening edge 12 of the test box 10 while elastically contacting. As a result, the gap between the test box 10 and the door 20 is surely closed by the fingers 30 and the packing 40, so that radio waves that are about to enter from the abutting portion between the test box 10 and the door 20 are transmitted to the fingers 30 and the packing 40. This causes a diffraction loss, so that it is possible to effectively shield radio waves that try to enter from the contact portion.

  Moreover, since the finger 30 is attached to the standing plate 31 as shown in FIG. 6, when the door 20 is closed, the restoring force of the finger 30 that contacts and deforms the test box 10 is This is perpendicular to the opening / closing direction (left-right direction in FIG. 6) (up-down direction in FIG. 6). Thereby, the door 20 can be prevented from opening due to the restoring force of the finger 30, and the door 20 can be fixed in the closed state.

  Furthermore, since the packing 40 is attached to the outer periphery side of the finger 30 as shown in FIG. 6, the shielding function by the finger 30 and the shielding function by the packing 40 work synergistically, and the test box 10 and the door 20. It is possible to more effectively shield radio waves that try to enter from the abutting portion. Moreover, even if the shielding function of either the finger 30 or the packing 40 is lowered, the sudden shielding function of the electronic apparatus testing device 1 can be prevented from being lowered by the other shielding function.

  The finger 30 may be directly attached to the peripheral edge 22 of the door 20 without using the standing plate 31. The packing 40 may be attached to the opening edge 12 side of the test box 10.

[Second Embodiment]
FIG. 7A is a schematic diagram showing a state where the door is opened, and FIG. 7B is a schematic diagram showing a state where the door is closed.
As shown in FIG. 7A, the radio wave shielding structure according to the second embodiment is a standing plate 31 provided at the opening edge portion 12 of the test box 10 that is a contact portion between the test box 10 and the door 20. The metal finger 30 attached to the side surface of the door 20 and the packing 40 having radio wave shielding property attached to the peripheral edge portion 22 of the door 20.

  In the radio wave shielding structure according to the second embodiment, the finger 30 is attached to the outer peripheral side surface of the L-shaped metal standing plate 31 that is fixed to the entire periphery of the opening edge portion 12 of the test box 10. Is different from the radio wave shielding structure according to the first embodiment.

  In the radio wave shielding structure according to the second embodiment having such a configuration, as shown in FIG. 7B, when the door 20 is closed, the fingers 30 are elastic to the peripheral portion 22 (bending portion 23) of the door 20. And the packing 40 elastically contacts the opening edge 12 of the test box 10. As a result, the gap between the test box 10 and the door 20 is surely closed by the fingers 30 and the packing 40, so that radio waves that are about to enter from the abutting portion between the test box 10 and the door 20 are transmitted to the fingers 30 and the packing 40. This causes a diffraction loss, so that it is possible to effectively shield radio waves that try to enter from the contact portion.

  Further, as shown in FIG. 7, since the fingers 30 are attached to the standing plate 31, the restoring force of the fingers 30 that deforms in contact with the door 20 when the door 20 is closed opens and closes the door 20. The vertical direction (the vertical direction in FIG. 7) is applied to the direction (the horizontal direction in FIG. 7). Thereby, the door 20 can be prevented from opening due to the restoring force of the finger 30, and the door 20 can be fixed in the closed state.

  Furthermore, since the packing 40 is attached to the outer peripheral side of the finger 30 as shown in FIG. 7, the shielding function by the finger 30 and the shielding function by the packing 40 work synergistically, and the test box 10 and the door 20. It is possible to more effectively shield radio waves that try to enter from the abutting portion. Moreover, even if the shielding function of either the finger 30 or the packing 40 is lowered, the sudden shielding function of the electronic apparatus testing device 1 can be prevented from being lowered by the other shielding function.

  The finger 30 may be directly attached to the opening edge 12 of the test box 10 without using the standing plate 31. The packing 40 may be attached to the opening edge 12 side of the test box 10.

[Third Embodiment]
FIG. 8A is a schematic diagram illustrating a state in which the door is opened, and FIG. 8B is a schematic diagram illustrating a state in which the door is closed.
As shown in FIG. 8A, the radio wave shielding structure according to the third embodiment includes an insertion piece 50 formed on the opening edge 12 of the test box 10 that is a contact portion between the test box 10 and the door 20. The finger 30 is attached to the inner peripheral side of the insertion groove 60 of the peripheral edge 22 of the door 20, and the packing 41 is the bottom of the insertion groove 60. The packings 42 and 42 are respectively attached to the opening edge portions 12 on the inner peripheral side and the outer peripheral side of the insertion piece 50.

The finger 30 is the same as that used in the radio wave shielding structure according to the first and second embodiments, and is attached to the entire circumference of the peripheral edge portion 22 of the door 20.
Like the packing 40 used in the radio wave shielding structure according to the first and second embodiments, the packings 41 and 42 are formed by covering a sponge material having elasticity (cushioning property) with a conductive fabric. Is different.

  The insertion piece 50 is a standing part made of metal (for example, aluminum, aluminum alloy, etc.) formed on the entire circumference of the opening edge 12 of the test box 10. As shown in FIG. 8A, the insertion piece 50 may be formed integrally with a panel 111 (see FIGS. 2 to 4) constituting the test box 10 (housing 110), or a metal plate (cross section). It may be formed by fixing the entire periphery of the opening edge 12 of the test box 10 by welding or the like. And packing 42,42 is attached to the both sides of this insertion piece 50 over the perimeter of the opening edge part 12 of the test box 10. FIG.

  The insertion groove 60 is a recess formed in the entire circumference of the peripheral edge portion 22 of the door 20, and the above-described insertion piece 50 is inserted when the door 20 is closed. A packing 41 is attached to the bottom of the insertion hole 60 over the entire periphery of the peripheral edge 22 of the door 20.

  In the radio wave shielding structure according to the third embodiment having such a configuration, as shown in FIG. 8B, when the door 20 is closed, the insertion piece 50 is inserted into the insertion groove 60 to form a radio wave diffraction structure. Therefore, the radio wave that is about to enter from the contact portion between the test box 10 and the door 20 causes diffraction loss inside the insertion piece 50 and the insertion groove 60.

  Further, when the door 20 is closed, the packing 41 elastically contacts the tip of the insertion piece 50, so that the gap between the insertion piece 50 and the insertion groove 60 is reliably closed, and the packings 42, 42 are inserted into the insertion groove. Since the gap between the test box 10 and the door 20 is reliably closed by elastically abutting on both sides of the 60, radio waves entering from the abutting portion between the test box 10 and the door 20 are packed 41, 42. , 42 causes diffraction loss.

  Furthermore, when the door 20 is closed, the finger 30 elastically abuts against the opening edge 12 of the test box 10 so that the gap between the test box 10 and the door 20 is reliably closed. A radio wave that tries to enter from the contact portion with the finger causes diffraction loss at the finger 30.

  Therefore, the radio wave shielding structure according to the third embodiment is formed from the contact portion between the test box 10 and the door 20 by the mutual diffraction loss effect of the fingers 30, the packings 41, 42, 42, the insertion piece 50 and the insertion groove 60. It is possible to more effectively shield radio waves that are about to enter.

  In the third embodiment, the insertion piece 50 is formed in the opening edge portion 12 of the test box 10 and the insertion groove 60 is formed in the peripheral edge portion 22 of the door 20. However, the present invention is not limited to this. . That is, the insertion piece 50 may be formed on the peripheral edge portion 22 of the door 20 and the insertion groove 60 may be formed on the opening edge portion 12 of the test box 10.

  In the third embodiment, the packings (41, 42) are attached to both sides of the insertion piece 50 and the bottom of the insertion groove 60. However, the present invention is not limited to this. It is good also as a structure attached only, and it is good also as a structure attached only to the bottom part of the insertion groove | channel 60. Further, the finger 30 may be attached to the opening edge 12 side of the test box 10.

[Fourth Embodiment]
FIG. 9A is a schematic view showing a state where the door is opened, and FIG. 9B is a schematic view showing a state where the door is closed.
In the radio wave shielding structure according to the fourth embodiment, the fingers 32 and 32 are attached to the inside of the insertion groove 60, and more specifically, the fingers 32 and 32 are provided on the opposing side surfaces inside the insertion groove 60. It differs from the radio wave shielding structure according to the third embodiment in that it is attached to each circumference.

  The finger 32 is a metal arcuate leaf spring member that is urged in the direction perpendicular to the mounting surface. Like the finger 30, the finger 32 has a shielding property against radio waves, but is different in size from the finger 30.

  In the radio wave shielding structure according to the fourth embodiment having such a configuration, in addition to the operational effects of the radio wave shielding structure according to the above-described third embodiment, as shown in FIG. The fingers 32 and 32 are elastically contacted with the insertion piece 50 so as to be sandwiched from both sides. As a result, the gap between the insertion piece 50 and the insertion groove 60 is surely closed, so that radio waves attempting to enter from the contact portion between the test box 10 and the door 20 cause diffraction loss at the fingers 32, 32. As a result, it is possible to more effectively shield the radio wave entering from the contact portion between the test box 10 and the door 20.

[Fifth Embodiment]
FIG. 10A is a schematic view showing a state where the door is opened, and FIG. 10B is a schematic view showing a state where the door is closed.
The radio wave shielding structure according to the fifth embodiment is characterized in that the packing 41 is not provided at the bottom of the insertion groove 60 and that the fingers 33 are attached to the entire circumference of the insertion piece 50. Different from structure.

  The finger 33 is a leaf spring member formed by bending a portion corresponding to a comb tooth of a strip-shaped metal plate having a substantially comb shape into a substantially triangular shape in cross-section, and is biased in a direction perpendicular to the mounting surface, Has shielding properties. Further, the finger 33 is formed with a clip portion 33 a for attaching to the insertion piece 50. The finger 33 is attached to the insertion piece 50 by the clip portion 33 a holding the insertion piece 50.

  In the radio wave shielding structure according to the fifth embodiment having such a configuration, as shown in FIG. 10B, when the door 20 is closed, the insertion piece 50 is inserted into the insertion groove 60 to form a radio wave diffraction structure. Therefore, the radio wave that is about to enter from the contact portion between the test box 10 and the door 20 causes diffraction loss inside the insertion piece 50 and the insertion groove 60.

  When the door is closed, the packings 42 and 42 elastically contact both sides of the insertion groove 60 and the finger 30 elastically contacts the opening edge 12 of the test box 10. Therefore, the radio wave that is about to enter from the contact portion between the test box 10 and the door 20 causes diffraction loss in the packings 42 and 42 and the fingers 30.

  Further, when the door 20 is closed, the distal end portion 33 b and the second bent portion 33 d of the finger 33 elastically contact the inner side surface of the insertion groove 60, and the first bent portion 33 c of the finger 33 is in contact with the insertion groove 60. Since the bottom portion is elastically contacted, the gap between the insertion piece 50 and the insertion groove 60 is surely closed, so that the radio wave entering the contact portion between the test box 10 and the door 20 is diffracted by the finger 33. Cause loss.

  Therefore, the radio wave shielding structure according to the fifth embodiment is based on the mutual diffraction loss effect of the fingers 30 and 33, the packings 42 and 42, the insertion piece 50, and the insertion groove 60 from the contact portion between the test box 10 and the door 20. It is possible to more effectively shield radio waves that are about to enter.

  The embodiment of the radio wave shielding structure has been described above, but the embodiment of the radio wave shielding structure is not limited to this. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention. For example, it may be configured to combine at least two of the first to fifth embodiments described above.

  In the first and second embodiments described above, one packing 40 is attached to the peripheral edge 22 of the door 20 (or the opening edge 12 of the test box 10) (see FIGS. 6 and 7). It is not limited to. For example, a configuration may be adopted in which two packings are attached so as to be doubly arranged with respect to the invasion direction of the radio wave entering from the contact portion between the test box 10 and the door 20 (not shown). ). Of course, you may attach so that packing may be arrange | positioned more than triple. The same applies to the packings 41 and 42 of the third to fifth embodiments.

  In the third to fifth embodiments described above, one finger 30 is attached to the peripheral edge 22 of the door 20 (or the opening edge 12 of the test box 10) (see FIGS. 8 to 10). It is not limited to. For example, a configuration may be adopted in which two fingers are double-arranged with respect to the intrusion direction of the radio wave entering from the contact portion between the test box 10 and the door 20 (not shown). ). Of course, you may attach so that a finger may be arrange | positioned more than triple. The same applies to the first and second embodiments.

  Further, in the third to fifth embodiments, the insertion piece 50 and the insertion groove 60 are formed one by one (see FIGS. 8 to 10). However, the present invention is not limited to this. For example, it is good also as a structure formed so that it may become more than double with respect to the penetration | invasion direction of the electromagnetic wave which tries to penetrate | invade from the contact part of the test box 10 and the door 20. FIG.

  Finally, while explaining the operation of the electronic apparatus test apparatus 1 shown in FIGS. 1 to 4 (including the radio wave shielding structure according to the first embodiment shown in FIG. 6), the electronic apparatus test according to an embodiment of the present invention is performed. The method will be described with reference to the drawings as appropriate.

  First, as shown in FIG. 1, the door 20 is opened, the electronic device P is inserted into the test box 10, and inserted through the insertion portion 174 a (see FIG. 3) formed in the fixture 174 of the mounting unit 170. It is fixed inside the test box 10. Further, a connector (not shown) of the cable 180 is connected to the electronic device P.

  Next, when the door 20 is closed, as shown in FIG. 6, the finger 30 elastically contacts the opening edge 12 (folded portion 13) of the test box 10, and the packing 40 opens the opening edge of the test box 10. 12 is elastically contacted. As a result, the gap between the test box 10 and the door 20 is reliably closed by the fingers 30 and the packing 40, and the radio waves that are about to enter from the contact portion between the test box 10 and the door 20 are diffraction loss by the fingers 30 and the packing 40. As a result, a high radio wave shielding environment can be realized.

  For example, when a test start switch (not shown) or the like is turned on, an electric signal is transmitted from the radio wave transmission / reception unit (not shown) to the antenna 160, and the radio wave is radiated from the antenna 160. The test of the operation of the electronic device P is performed by detecting the reception state of the radio wave of the electronic device P with the test unit 190 (see FIG. 2) while radiating the radio wave from the antenna 160. In the test unit 190, the reception state of the radio wave of the electronic device P is detected to determine whether or not the electronic device P is operating normally.

  At this time, it is also possible to perform a test by changing the intensity or frequency band of the radio wave radiated from the antenna 160 by the radio wave transmission / reception unit (not shown).

If it is determined that the state is normal, the door 20 is opened and the direction of the antenna 160 is changed, and then the door 20 is closed to test different polarization planes (horizontal wave and vertical wave).
If it is determined that the state is normal, the door 20 is opened, the position of the holding fixture 172 is changed and fixed to the fixing plate 171, the distance from the antenna 160 is changed, and the electronic device P normally transmits radio waves. It is also possible to test whether or not it can be received.

Note that the distance between the antenna Pa (see FIG. 3) of the electronic device P and the antenna 160 is preferably set to be equal to or greater than the wavelength λ of the radio wave radiated from the electronic device P or the antenna 160, and is equal to or greater than 2λ. It is more desirable to set so. As a result, the antenna Pa of the electronic device P can be disposed in the region of the far electromagnetic field, and the electronic device P can be tested at a position where the electric field strength is stable. It can be carried out.
Here, the far field region, the wave impedance means that the equal area on the wave impedance Z ₀ of the space. The radio wave radiated from the antenna 160 propagates close to a plane wave in this region.
The above is a series of operations of the electronic apparatus test apparatus 1 and the electronic apparatus test method.

  According to the test apparatus 1 for electronic equipment as described above, the fingers 30, 32, 33, packings 40, 41, 42, the insertion piece 50, the insertion groove 60, and the like are brought into contact with the test box 10 and the door 20. Therefore, it is possible to effectively shield the radio wave that is about to enter from the outside of the test box 10. Moreover, the test of the electronic device P can be precisely performed by using such an electronic device test apparatus 1.

  Although one embodiment of the present invention has been described above, the embodiment of the present invention is not limited to this. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention, For example, the following changes are possible.

  In the above-described embodiment, a mobile phone has been illustrated and described as the electronic device P. However, the electronic device P to be tested in the present invention is not limited to a mobile phone. For example, it may be a personal computer with a PDA (Personal Digital Assistance) or a wireless LAN (Local Area Network) function for transmitting and receiving radio waves, similar to a mobile phone. Further, it may be a precision measuring instrument or a medical instrument that is not preferably affected by external radio waves. Furthermore, it may be a home appliance or a medical device that is not preferable to radiate radio waves of a predetermined value or more to the outside. In this case, it goes without saying that the shape and size of the mounting unit 170 and whether or not the mounting unit 170 is provided are appropriately set according to the electronic device to be tested.

  In addition, the test box 10 is not limited to the above-described embodiment, and may be a large room (test room) in which a tester can enter and exit, for example, an anechoic chamber. Such a test chamber may be formed of a metal casing similarly to the test box 10, or may be a concrete structure having radio wave shielding properties, for example.

  In the above-described embodiment, a plurality of metal panels 111 are welded to a frame (not shown) serving as a skeleton to form the housing 110. However, the present invention is not limited to this. For example, a plurality of metal panels 111 are formed. It is good also as a structure which can be assembled and disassembled and formed by assembling these panels with bolts or the like. In such a configuration, it is desirable to interpose a filler having radio wave shielding properties in the gaps between the plurality of metal panels. Thereby, the radio wave shielding property of the housing (test box) can be maintained well. As a filler having radio wave shielding properties, for example, a resistive loss body (for example, a carbon resistance sheet, a metal thin film) in which at least one of the upper and lower surfaces is insulated by an insulating layer (for example, paper, an adhesive tape that also serves as an adhesive layer). A sheet body for electromagnetic shielding joining having a resistance sheet, a heat ray shielding film, etc. can be used. Specifically, for example, Lumidion (registered trademark) IR (Toyo Service Co., Ltd.) can be used.

  In the above-described embodiment, the casing 110 is made of metal so that the radio wave shielding property, rigidity, and the like are increased. However, the present invention is not limited to this. For example, the housing is made of a plate material having radio wave shielding properties. It may be formed.

In the above-described embodiment, the cable 180 (electric signal cable) is passed through the EMI duct 140. However, the present invention is not limited to this.
Electrical noise is generated in the electrical signal cable because noise is conducted through the cable. In the above-described embodiment, the cable 180 is covered with the noise absorber 181 (see FIG. 2) to suppress the radiation and propagation of noise from the cable 180. Is difficult. Therefore, in order to further improve the radio wave shielding performance of the test box 10, for example, an optical signal cable (optical cable) with extremely small noise may be passed through the EMI duct 140.

FIG. 11 is a horizontal cross-sectional view showing another embodiment of the electronic apparatus testing apparatus. Note that the cables 182 and 186 are cables for electrical signals, and the conversion units 183 and 185 are known units that can mutually convert electrical signals and optical signals.
As shown in FIG. 11, the electronic device P and the test unit 190 are connected via a cable 182, a conversion unit 183, an optical cable 184, a conversion unit 185, and a cable 186.

  Specifically, the other end of the cable 182 having a connector (not shown) that can be detachably connected to the electronic device P at one end is connected to the conversion unit 183 installed inside the casing 110 (test box 10). One end of the optical cable 184 is connected to the conversion unit 183. The optical cable 184 is wired so that a predetermined length (for example, 100 mm or more) passes through the interior of the EMI duct 140. The other end of the optical cable 184 is connected to a conversion unit 185 installed outside the casing 110 (test box 10), one end of the cable 186 is connected to the conversion unit 185, and the other end is connected to the test unit 190. It is connected to the. The conversion units 183 and 185 and the optical cable 184 can be connected via, for example, a USB connector, an RS232C connector, a LAN connector, or the like.

  Here, when the conversion units 183 and 185 are devices that do not include an internal power source, for example, it is necessary to supply power from an external power source (for example, a power outlet or the like) separately. At this time, for example, power can be supplied to the conversion unit 185 installed outside the housing 110 by directly connecting a power cable connected to an external power source (not shown). However, since noise is conducted inside such a power cable, electromagnetic interference occurs when the power cable is directly conducted inside the housing 110 and connected to the conversion unit 183.

  Therefore, as shown in FIG. 11, it is desirable to supply power to the conversion unit 183 via a low-pass filter 187 penetrating the side wall of the housing 110. Specifically, a power cable 188 connected to the low-pass filter 187 is connected to an external power source (not shown) outside the housing 110 and is connected to a conversion unit 183 inside the housing 110. The power cable 189 is connected to the low-pass filter 187 to supply power to the conversion unit 183.

  The low-pass filter 187 is a filter that allows only a low-frequency to pass among filters that block signals other than a specific frequency. For example, when the external power source is a power outlet, such a low-pass filter 187 allows the frequency band of 50 Hz or 60 Hz to pass and blocks the frequency band of the frequency band used by the electronic device P to be tested. It is desirable to be. For example, when the electronic device P is a mobile phone, it is desirable to block the frequency range of 0.8 to 2.4 GHz. Note that the external power source that supplies power to the conversion unit 183 is not limited to a power outlet, and may be, for example, a battery installed in the housing 110.

  As described above, electromagnetic interference can be satisfactorily prevented by wiring the optical cable 184 so that a predetermined length (for example, 100 mm or more) of the optical cable 184 passes through the inside of the EMI duct 140. Thereby, since the radio wave shielding performance of the test box 10 (electronic device testing apparatus 1) can be further improved, the electronic device P can be tested more precisely. In addition, when all the cables that pass through the inside of the EMI duct 140 and are conducted to the inside of the housing 110 are optical cables, the EMI duct 140 may not be provided.

  When both the electronic device P and the test unit 190 are devices that can directly transmit and receive optical signals, the cables 182 and 186 and the conversion units 183 and 185 are not provided, and the electronic device P can be detachably attached to one end. It is good also as a structure (not shown) which directly connects the electronic device P and the test unit 190 with the optical cable 184 provided with the connector (not shown) which can be connected.

  In the above-described embodiment, the configuration is such that the air supply / exhaust honeycomb filter 150 (or mesh filter 155) is provided on the back surface of the test box 10 (housing 110), but the air supply / exhaust filter is not limited thereto. is not. For example, on the back of the test box (housing), a plurality of fine through-holes that are set (designed) with an inner diameter and length (panel thickness) to function as a waveguide that does not propagate radio waves longer than a predetermined wavelength. It is good also as the formed structure. Further, such a plate having a plurality of fine through-holes is inserted into a through-hole (see FIG. 4) formed on the back surface of the test box (housing) from the inside through a mounting frame and a gasket having insulation resistance. It is good also as a structure fixed.

  In the above-described embodiment, a single air supply / exhaust filter (honeycomb filter 150 or mesh filter 155) is provided on the back surface of the test box 10 (housing 110). However, the present invention is not limited to this. And at least two filters for exhaust. In this case, all of the same type of filters may be used, or different types of filters may be used in combination. Further, an exhaust fan (not shown) may be attached to an exhaust through hole formed in the back surface of the exhaust filter or the test box (housing). In addition, when it is desired to further improve the radio wave shielding performance of the electronic apparatus test apparatus, the air supply / exhaust filter may not be provided.

  In the above-described embodiment, the rotation adjustment of the antenna 160 is performed by loosening the connector 161 and rotating the antenna waveguide 162 to change the direction of the antenna 160, and then tightening the connector 161 to tighten the antenna waveguide 162 ( Although the configuration is such that the antenna 160) is manually fixed again, the present invention is not limited to this. For example, it may be configured to perform mechanically by combining known power mechanisms and control mechanisms.

  In the above-described embodiment, the fixing tool 174 is detachably attached to the mounting plate 173. However, the present invention is not limited to this, and the fixing tool may be rotatably attached to the mounting plate. In this case, the rotation adjustment of the fixture may be performed mechanically.

  In the above-described embodiment, the holding and fixing jig 172 can be moved stepwise by the plurality of bolt holes 171a and the bolts B formed in the fixing plate 171, but the present invention is not limited to this. For example, the holding and fixing jig may be configured to be able to move steplessly along a rail provided on the fixing plate. According to this, the distance between the antenna and the holding fixture (electronic device) can be easily adjusted.

  In the above-described embodiment, as shown in FIGS. 1, 2, and 4, the door 210 is provided with the window 210. However, the present invention is not limited thereto, and the test box may be provided with a window. A plurality of doors and windows may be provided. Note that the window need not be provided when it is desired to further improve the radio wave shielding performance of the electronic apparatus test apparatus.

  In the above-described embodiment, as the packings 40, 41, and 42, those in which a sponge material is coated with a conductive fabric are exemplified, but the packing usable in the present invention is not limited to this. For example, a packing made of rubber (silicon rubber, chloroprene rubber, etc.) (so-called conductive rubber) mixed with conductive fine particles (metal fine particles, carbon black, etc.) may be used. Moreover, you may use what coat | covered the gasket with the metal mesh (for example, soft shield (Taiyo Wire Net Co., Ltd.)), and may use a metal mesh bundle wire.

  In the above-described embodiment, the electronic device test method has been described in which the test unit 190 determines whether or not the electronic device P can normally receive radio waves by radiating radio waves from the antenna 160. The test method is not limited to this. For example, various instructions are transmitted from the test unit 190 to the electronic device P to cause the electronic device P (antenna Pa. See FIG. 3) to transmit radio waves to the antenna 160, and the radio waves received by the antenna 160 are transmitted to a radio wave transmission / reception unit (not shown). The electronic device P may determine whether or not the electronic device P is operating normally.

1 is an overall perspective view showing an embodiment of a test apparatus for electronic equipment according to the present invention. It is II-II sectional drawing of the testing apparatus for electronic devices shown in FIG. It is III-III sectional drawing of the testing apparatus for electronic devices shown in FIG. It is IV-IV sectional drawing of the testing apparatus for electronic devices shown in FIG. (A) is a perspective view which shows a honey-comb filter, (b) is a perspective view which shows a mesh filter. (A) is the schematic which shows the state which opened the door of the electromagnetic wave shielding structure which concerns on 1st Embodiment, (b) is the schematic which shows the state which closed the door. (A) is the schematic which shows the state which opened the door of the electromagnetic wave shielding structure which concerns on 2nd Embodiment, (b) is the schematic which shows the state which closed the door. (A) is the schematic which shows the state which opened the door of the electromagnetic wave shielding structure which concerns on 3rd Embodiment, (b) is the schematic which shows the state which closed the door. (A) is the schematic which shows the state which opened the door of the electromagnetic wave shielding structure which concerns on 4th Embodiment, (b) is the schematic which shows the state which closed the door. (A) is the schematic which shows the state which opened the door of the electromagnetic wave shielding structure which concerns on 5th Embodiment, (b) is the schematic which shows the state which closed the door. It is a horizontal sectional view showing other embodiments of a testing device for electronic equipment concerning the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Test apparatus for electronic devices 10 Test box 11 Opening part 12 Opening edge part 20 Door 22 Peripheral part 30,32,33 Finger 31 Standing board 40,41,42 Packing 50 Insertion piece 60 Insertion groove 140 EMI duct 180 Cable 184 Optical cable H Hinge P Electronic equipment

Claims (9)

A test box having at least one opening that communicates the outside with the inside of the electronic device;
A door attached to the test box via a hinge and opening and closing the opening;
A finger made of metal attached to an opening edge of the test box or a peripheral edge of the door, which is a contact portion between the test box and the door;
A test apparatus for electronic equipment, further comprising a packing having radio wave shielding properties attached to a peripheral edge of the door or an opening edge of the test box.   The electronic device testing apparatus according to claim 1, wherein the finger is attached to a side surface of an upright plate provided at an opening edge of the test box or a peripheral edge of the door.   3. The electronic apparatus testing device according to claim 1, wherein the packing is positioned on an outer peripheral side of the finger when the door is closed. 4. A test box having at least one opening that communicates the outside with the inside of the electronic device;
A door attached to the test box via a hinge and opening and closing the opening;
An insertion piece formed on one of an opening edge of the test box and a peripheral edge of the door, which is a contact portion between the test box and the door;
An insertion groove formed on the other side into which the insertion piece is inserted when the door is closed;
2. The electronic device testing apparatus according to claim 1, wherein the finger is attached to an inner peripheral side of the insertion piece or the insertion groove, and the packing is attached to a bottom portion of the insertion groove. A test box having at least one opening that communicates the outside with the inside of the electronic device;
A door attached to the test box via a hinge and opening and closing the opening;
An insertion piece formed on one of an opening edge of the test box and a peripheral edge of the door, which is a contact portion between the test box and the door;
An insertion groove formed on the other side into which the insertion piece is inserted when the door is closed;
2. The electronic apparatus testing apparatus according to claim 1, wherein the finger is attached to an inner peripheral side of the insertion piece or the insertion groove, and the packing is attached to both sides of the insertion piece.   6. The electronic apparatus testing apparatus according to claim 4, wherein a metal finger is attached to the insertion groove.   6. The electronic apparatus testing apparatus according to claim 4, wherein a metal finger is attached to the insertion piece.   8. The electronic device according to claim 1, wherein the test box includes a duct that prevents electromagnetic interference and that conducts a cable that can be connected to the electronic device to the inside of the test box. 9. Testing equipment.   9. The electronic device test apparatus according to claim 8, wherein the cable is an optical cable that transmits an optical signal.

Images