WO2014142164A1 - 電子機器用筐体構造 - Google Patents
電子機器用筐体構造 Download PDFInfo
- Publication number
- WO2014142164A1 WO2014142164A1 PCT/JP2014/056471 JP2014056471W WO2014142164A1 WO 2014142164 A1 WO2014142164 A1 WO 2014142164A1 JP 2014056471 W JP2014056471 W JP 2014056471W WO 2014142164 A1 WO2014142164 A1 WO 2014142164A1
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- WO
- WIPO (PCT)
- Prior art keywords
- unit
- electronic device
- housing
- casing
- vibration
- Prior art date
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/08—Insulation or absorption of undesired vibrations or sounds
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
- G06F1/182—Enclosures with special features, e.g. for use in industrial environments; grounding or shielding against radio frequency interference [RFI] or electromagnetical interference [EMI]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
- G06F1/187—Mounting of fixed and removable disk drives
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/022—Cases
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1485—Servers; Data center rooms, e.g. 19-inch computer racks
- H05K7/1488—Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures
- H05K7/1489—Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures characterized by the mounting of blades therein, e.g. brackets, rails, trays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/045—Ball or roller bearings having rolling elements journaled in one of the moving parts
Definitions
- the unit housing After mounting an electronic device unit holding a vibration generation source such as an HDD (Hard Disk Drive) or a disk drive apparatus on the unit housing, the unit housing is moved from the vibration generation source such as the HDD.
- a vibration generation source such as an HDD (Hard Disk Drive) or a disk drive apparatus
- the unit housing is moved from the vibration generation source such as the HDD.
- the present invention relates to a housing structure for an electronic device that suppresses generation of noise caused by vibrations propagating to the body.
- an electronic device such as a server has an operation unit such as an HDD, a disk drive device, and a cooling fan, and this operation unit is a source of vibration generation.
- this operation unit is a source of vibration generation.
- the vibration generated from these vibration generating sources propagates to each part of the unit housing and becomes a noise generating source.
- the noise generated by using the HDD as a vibration source is a sound that causes a human ear and is uncomfortable because the frequency is constant.
- the ratio of the noise derived from the vibration of the HDD to the total noise is relatively high.
- a slight waveform difference may cause a beat waveform, which may cause complaints as an unpleasant sound, and there is a need for countermeasures. there were.
- One effective example of this solution is to prevent the vibration from the vibration source from propagating to each part of the unit housing that can be a noise emission source.
- a housing structure 110 for an electronic device having a structure for preventing vibration propagation as shown in FIG. 6 is known. That is, for example, four HDDs 135 as vibration generation sources are held in the electronic device unit 130 holding the electronic devices.
- the electronic device unit 130 is movable along the arrow A direction (attachment / detachment direction) with respect to the unit housing 111 of the tower-type server device 125 and can be easily attached / detached. ing.
- the unit casing 111 is formed in a square frame shape having a bottom surface portion 112, opposing side surface portions 113 and 113, and an upper surface portion 114.
- the bottom surface portion 112 is provided with a slide plate 112A.
- the bottom surface of the electronic device unit 130 is in contact with the top surface of the slide plate 112A and can slide.
- Three guide rails 113A are provided along the direction of the arrow A on the inner surfaces of the side surfaces 113, 113 facing each other in the vertical direction.
- An opening 114A is formed in the upper surface 114 of the unit casing 111, and a unit pressing member 115 is detachably provided so as to close the opening 114A.
- this unit presser member 115 attachment engaging portions 115B and 115B are bent at both ends in a direction orthogonal to the attaching / detaching direction A.
- the upper surface 114 of the unit housing 111 is formed with engagement holes 114B and 114B that engage with the mounting engagement portions 115B and 115B of the unit pressing member 115.
- a sheet-like low elastic material 116 is provided around the slide plate 112A on the bottom surface portion 112.
- a sheet-like low-elasticity material 117 is provided between the three guide rails 113A and outside the two upper and lower guide rails 113A. Further, a sheet-like low elastic material 118 is provided on the back surface of the unit pressing member 115.
- an acoustic device storage device is known (see Patent Document 1).
- the storage device for an acoustic device disclosed in Patent Document 1 has a configuration in which a plurality of rollers made of an elastic member are provided on four surfaces of a box-shaped sleeve. Therefore, the acoustic device can be easily stored and removed from the sleeve, and the acoustic device is pressed by the elasticity of the roller, so that the vibration of the housing is blocked and the vibration applied to the sleeve from the outside is blocked. ing.
- a drawer device is known as another device for preventing vibration (see Patent Document 2).
- a roller is rotatably attached to a helicate nut of a crosspiece at a lower end portion of a side wall of a housing, and a video tape recorder stored in a storage unit is pulled out on a mounting table.
- the configuration is such that the mounting table is slid out and pulled out by holding the rollers with slider fittings at both ends of the mounting table.
- a storage device for an acoustic device that presses an MD device inserted into a sleeve with elasticity of a roller in storage of the MD device is also known (see Patent Document 3).
- each of the existing examples has the following problems. That is, in the electronic device casing structure 110 shown in FIG. 6, the electronic device unit 130 is detachably slidably brought into contact with the slide plate 112A and the guide rail 113A of the unit housing 111, and is used for the unit.
- the casing 111 is not in direct contact with the sheet-like low elastic material 116 at the bottom surface portion 112 and the sheet-like low elastic material 117 between the guide rails 113A at the side surface portion. Therefore, for example, vibrations caused by driving of the HDD held in the electronic device unit 130 do not directly propagate to the sheet-like low-elasticity materials 116 and 117 but directly propagate to the unit casing 111, thus preventing the vibration.
- FIG. 7 shows temporal changes in sound pressure in the vibration propagation preventing structure 110 according to this existing example. This time change of the sound pressure indicates a result obtained by measuring the sound pressure with a microphone. As can be seen from the measurement results of FIG. 7, the amplitude of the natural vibration is large, and therefore, the vibration transmitted to the unit casing 111 is large, and thus noise is generated.
- the storage device for an acoustic device disclosed in Patent Document 1 it is certainly easy to store and remove the acoustic device from the sleeve, and the acoustic device is pressed by the elasticity of the roller. Vibration is blocked and vibration applied to the sleeve from the outside is blocked.
- the storage device for the acoustic device is for an MD device. Since the MD device is low in height, the storage device for the audio equipment is also low in height. Therefore, if the storage device having such a structure is used for a product having a high height such as an HDD, and a plurality of (for example, four) storage devices can be held, a roller having a long overall length is produced.
- a roller is rotatably attached to the helicate nut of the crosspiece at the lower end of the side wall of the housing. This roller is for sliding the slider fitting. Yes, it does not suppress the propagation of vibration generated from the vibration source held in the electronic device unit. Further, the storage device for an acoustic device disclosed in Patent Document 3 has the same problem as that of Patent Document 1.
- An object of the present invention is to provide an electronic device casing structure that suppresses the generation of noise caused by propagation of vibrations generated from an electronic device held in the electronic device unit to the unit housing.
- the electronic device casing structure of the present invention includes a unit casing in which an electronic device unit holding an electronic device serving as a vibration generation source is detachably mounted.
- a unit support mechanism having a roller member that supports the electronic device unit and guides the electronic device unit at the time of attachment / detachment, and the roller member is formed of an anti-vibration member made of an elastic material.
- the electronic device unit holding the electronic device serving as the vibration generating source is supported by the unit casing via the unit support mechanism having the roller member. Therefore, the electronic device unit and the unit housing are not in direct contact with each other and are supported by a floating structure. And since the roller member is comprised with the vibration proof member which consists of elastic materials, propagation of the vibration which arises from the electronic device which is a vibration generation source is suppressed. As a result, vibration generated from the electronic device can be prevented from propagating to the unit housing and radiated as sound waves therefrom, and generation of noise can be suppressed. In addition, since the electronic device unit is guided by the roller member when being detached from the unit housing, it is easy to attach and detach.
- the roller member is composed of a vibration isolating member and rotates when the electronic device unit is attached / detached, it is possible to prevent the vibration isolating member made of a low elastic material from being greatly deformed by a shearing force. Prevent decline.
- FIG. 1 is an overall exploded perspective view showing an embodiment of a casing structure for an electronic device according to the present invention.
- FIG. 3 is a front view of a cross section of only the unit housing in a state where the electronic device unit of the embodiment is mounted on the unit housing. It is the side view which carried out the cross section of only the unit housing
- FIG. 1 is an overall perspective view of a housing structure 10 for an electronic device
- FIG. 2 shows a state in which an electronic device unit (hereinafter simply referred to as a unit) 30 that holds the electronic device is mounted on the unit housing 11.
- 3 is a front view
- FIG. 3 is a cross-sectional view of the unit 30 attached to the unit housing 11 along the attaching / detaching direction
- FIG. 4 shows the entire unit support mechanism 18 having a rotatable roller member 19. It is a perspective view.
- the electronic device casing structure 10 of this embodiment includes a unit casing 11 in which a unit 30 holding an electronic device such as the HDD 35 serving as a vibration generation source is detachably mounted.
- the unit housing 11 is provided with a plurality of unit support mechanisms 18 that support the unit 30 and guide the unit 30 at the time of attachment and detachment.
- the unit support mechanism 18 includes a rotatable roller member 19. I have.
- the roller member 19 is composed of a vibration isolating member made of an elastic material, particularly a low elastic material.
- the unit 30 is formed in a square box shape made of a steel plate or hard plastic, and a storage chamber partitioned by a partition plate (not shown) is provided therein. In the storage chamber, a plurality of the HDDs 35 (in the present embodiment, four are stored) are replaceable. Such a unit 30 is attached to, for example, the tower type server device 25 including the unit casing 11.
- the unit 30 is moved toward the unit housing 11 side along the attaching / detaching direction indicated by an arrow A in FIG. 1 and can be detachably attached to the unit housing 11.
- an engagement hole 30 ⁇ / b> A that engages with a locking portion 15 ⁇ / b> A provided in the presser member 15, which will be described in detail later, is formed on the insertion opening side of the HDD 35.
- the unit casing 11 is also made of a steel plate or hard plastic, and is formed in a square frame shape into which the unit 30 can be inserted. And it is being fixed to the bottom plate 25A and the side plate 25B of the main-body part of the said tower type server apparatus 25.
- FIG. 1 is also made of a steel plate or hard plastic, and is formed in a square frame shape into which the unit 30 can be inserted. And it is being fixed to the bottom plate 25A and the side plate 25B of the main-body part of the said tower type server apparatus 25.
- the unit 30 is supported inside the unit housing 11 in a substantially floating state via a roller member 19 of the unit support mechanism 18. That is, a plurality of unit support mechanisms 18 are provided on each of the bottom surface portion 12 and the opposing side surface portion 13 of the unit housing 11 (four each in the present embodiment). Thus, it is configured to include a rotatable roller member 19. Therefore, the unit 30 is supported in a state in which the outer peripheral surface of each roller member 19 and three outer peripheral surfaces of the four peripheral surfaces of the unit 30 are in direct contact, that is, in a floating state.
- Two unit support mechanisms 18 each having a roller member 19 are arranged in two rows on the bottom surface portion 12 of the unit housing 11 along the attaching / detaching direction A, ie, the near side and the far side. Further, two unit support mechanisms 18 each having a roller member 19 are arranged in two rows on the front side and the back side along the attaching / detaching direction A on the side surface portions 13 and 13 facing each other.
- the unit support mechanisms 18 arranged along the attaching / detaching direction A between the bottom surface portion 12 and the side surface portions 13 and 13 are set to have substantially the same distance between the front side and the back side.
- the electronic device unit 30 is supported by using a plurality of (in the embodiment, 12 in total) roller members 19 of the unit support mechanism 18 as support points.
- the vibration to the unit housing 11 is effectively achieved. Insulation can be performed.
- the position where the amplitude in the natural vibration shown by the sound pressure measurement shown in FIG. 7 of the existing structure is minimized that is, the position of (a) and (b) that becomes the vibration node
- two roller members 19 of the unit support mechanism 18 are arranged on each of the bottom surface portion 12 of the unit casing 11 and the side surface portions 13 and 13 facing each other. As shown in FIGS. 1 and 3, this state is indicated by attaching (A) and (B) to each of the roller members 19 in the front-rear direction.
- FIG. 5 is a diagram measured by sound pressure measurement using a microphone.
- four HDDs were mounted as vibration generation sources.
- the unit support mechanism 18 disposed on the bottom surface portion 12 includes a rotatable roller member 19 and a shaft member 20 that supports the roller member 19, and this roller member 19. Is formed of rubber or elastomer which is a low elastic material.
- the shaft member 20 is made of metal or hard plastic.
- the shaft member 20 of the unit support mechanism 18 configured as described above is rotatably supported by the support plate 21.
- the support plate 21 is provided on the upper surface of the bottom plate 25 ⁇ / b> A of the tower-type servo device 25 in a state of being laid below the bottom surface portion 12 of the unit housing 11.
- the support plate 21 is formed in a reverse tray shape with an upper surface portion 21 ⁇ / b> A and an edge portion 21 ⁇ / b> B having a predetermined height formed on the lower side thereof.
- An opening 21 ⁇ / b> C is formed at a predetermined position on the upper surface portion 21 ⁇ / b> A in order to rotatably mount the roller member 19 of the unit support mechanism 18.
- a bifurcated shaft support portion 21D for horizontally supporting the shaft member 20 of the unit support mechanism 18 is formed on the edge facing the opening portion 21C from the upper surface portion 21A.
- the shaft support portion 21D is provided at a predetermined interval in a direction orthogonal to the attachment / detachment direction A so that the roller member 19 can rotate along the attachment / detachment direction A.
- Unit support mechanisms 18 and 18 similar to the unit support mechanism 18 shown in FIG.
- the unit support mechanism 18 provided on the bottom surface portion 12 and the unit support mechanism 18 provided on the side surface portions 13 and 13 are different in the attachment positions and the support portions that rotatably support the shaft member 20. It is. That is, an opening 13A (see FIG. 2) is formed at a predetermined position of the side surfaces 13 and 13 so that the unit support mechanism 18 can be rotatably mounted.
- the unit support mechanism 18 disposed on each of the side surfaces 13 and 13 is provided such that the shaft members 20 at both ends thereof are oriented in the vertical direction, and thus the roller member 19 is rotatable about the vertical axis.
- the shaft member 20 of the unit support mechanism 18 is in contact with the outer surface of the side surface portions 13 and 13 as shown in FIG.
- the shaft member 20 is attached by pressing the outer periphery of the shaft member 20 with a commonly used shaft support member 22 such as a U band.
- a commonly used shaft support member 22 such as a U band.
- the lower shaft member 20 of the upper and lower shaft members 20 of the unit support mechanism 18 arranged in the vertical direction is placed at the corresponding position of the side surface portions 13 and 13.
- a bearing portion (not shown) that comes into contact with the lower surface of the housing is provided.
- the unit support mechanism 18 provided on each of the opposing side surface portions 13, 13 of the unit housing 11 is an electronic device unit.
- the shaft support member 22 supports the outer peripheral surface 30 so that the outer peripheral surface of each roller member 19 of the unit support mechanism 18 is slightly pressed.
- the unit 30 is supported by the roller member 19 of the unit support mechanism 18 provided on the bottom surface portion 12 of the unit casing 11 and the opposite side surface portions 13 and 13, respectively. Thus, it is attached to the unit casing 11 in a substantially floating state.
- an opening 14A is formed in the upper surface portion 14 of the unit housing 11, and the unit pressing member 15 that also serves as a lid can be attached to and detached from the opening 14A. It can be installed.
- the unit pressing member 15 is formed in a substantially quadrangular shape, and the engaging portion 15A formed by bending in a L-shaped section is formed on the front surface portion of the unit housing 11 in the attaching / detaching direction A. Yes.
- the locking portion 15 ⁇ / b> A is formed on the upper surface of the unit 30 after the unit 30 is attached to the unit housing 11 and then inserted through the through hole 14 ⁇ / b> C formed in the upper surface portion 14 of the unit housing 11. It engages with the engaging hole 30A. Therefore, by engaging the locking portion 15A and the engagement hole 30A, the unit 30 attached to the unit housing 11 can be prevented from coming out in the attaching / detaching direction A.
- a plurality (four in this embodiment) of pressing members 16 capable of pressing the upper surface of the unit 30 are provided on the back surface of the unit pressing member 15, and these pressing members 16 are provided on the unit casing 11.
- the unit support mechanism 18 disposed on the bottom surface portion 12 is opposed to the unit support mechanism 18.
- the pressing member 16 is made of rubber or elastomer similar to the roller member 19 of the unit support mechanism 18 and is formed in a columnar shape, for example. Then, the upper surface of the unit 30 mounted on the unit casing 11 can be supported by being pressed with a predetermined pressure.
- the pressing member 15 is formed in an L-shaped cross section toward the lower side so that the pressing member 15 can be attached to and detached from the unit housing 11.
- the attached engaging portions 15B, 15B are formed.
- the upper surface portion 14 of the unit casing 11 is formed with engagement holes 14B and 14B that engage with the mounting engagement portions 15B and 15B. Therefore, after the unit 30 is mounted on the unit housing 11, when the unit pressing member 15 is put on the upper surface portion 14 of the unit housing 11, the engaging portion 15 ⁇ / b> A of the unit pressing member 15 and the engagement hole of the unit 30. 30A is engaged, and the engaging portions 15B and 15B for attachment of the unit pressing member 15 are engaged with the engaging holes 14B and 14B of the upper surface portion 14 of the unit housing 11.
- the unit 30 is attached to or detached from the unit housing 11 as follows. First, when mounting, the unit pressing member 15 of the unit casing 11 is removed. Next, the unit 30 holding the predetermined HDD 35 is moved along the attaching / detaching direction A and inserted into the unit housing 11.
- the outer peripheral bottom surface and the outer peripheral side surface of the unit 30 are slightly pressed by the outer peripheral surface of the roller member 19 of the unit support mechanism 18 provided on the bottom surface portion 12 and the side surface portions 13 and 13 of the unit housing 11.
- the unit 30 is inserted into the unit housing 11 while confirming the position.
- the unit pressing member 15 When the unit 30 is inserted to a predetermined stop position, the unit pressing member 15 is positioned above the opening 14A of the unit housing 11. Next, the locking portion 15 ⁇ / b> A of the pressing member 15 is inserted into the through hole 14 ⁇ / b> C of the upper surface portion 14 of the unit housing 11 and further engaged with the engagement hole 30 ⁇ / b> A of the unit 30. At the same time, the attachment engaging portions 15B, 15B of the pressing member 15 are engaged with the engagement holes 14B, 14B of the upper surface portion 14 of the unit housing 11.
- a procedure reverse to the mounting procedure described above may be performed. That is, first, the presser member 15 is lifted upward to disengage the locking portion 15A of the presser member 15 from the engagement hole 30A of the unit 30, and the mounting engagement portions 15B and 15B of the presser member 15 are attached. And the engagement holes 14B and 14B of the upper surface portion 14 of the unit housing 11 are disengaged.
- the unit 30 may be pulled out from the unit housing 11 along the attaching / detaching direction A. At this time, the unit 30 moves along the roller member 19 of the unit support mechanism 18 held on the three surfaces of the bottom surface portion 12 of the unit casing 11 and the side surface portions 13 and 13 facing each other. Can do.
- the following effects can be obtained. (1) Since the unit 30 holding the HDD 35 serving as a vibration generation source is supported by the unit casing 11 via the unit support mechanism 18 having the roller member 19, the unit 30 and the unit casing 11 are supported. And the unit 30 is supported by a floating structure. And since the roller member 19 is comprised with the vibration proof member which consists of a low elastic material, propagation to the housing
- the roller member 19 is made of a vibration-proof member made of rubber or elastomer, which is a low-elastic material, and rotates when the unit 30 is attached or detached, the vibration-proof member made of the low-elastic material is greatly increased by shearing force. The deformation can be prevented, and the performance deterioration of the vibration isolating member can be prevented.
- a locking portion 15 ⁇ / b> A formed to be bent in an L-shaped cross section is provided on the front surface portion of the unit pressing member 15 in the attaching / detaching direction A of the unit housing 11.
- the unit 30 can be engaged with an engagement hole 30 ⁇ / b> A formed on the upper surface. Therefore, by engaging both 15A and 30A, it is possible to prevent the unit 30 mounted on the unit housing 11 from being pulled out in the attaching / detaching direction A.
- roller members 19 each in the front-rear direction along the attachment / detachment direction A of the bottom surface portion 12 of the unit housing 11 and the front-rear direction along the attachment / detachment direction A of the opposing side surface portions 13, 13. , 19 are arranged, and these roller members 19 and 19 are formed to have a size that can support and guide the unit 30, so that it is not necessary to use long rollers as described in the existing examples. It is possible to reduce the weight.
- the unit pressing member 15 is provided with a locking portion 15A formed by bending it in an L-shaped cross section on the front surface portion in the attaching / detaching direction A of the unit casing 11, and this locking portion 15A is a unit holding member 15A.
- this locking portion 15A is a unit holding member 15A.
- the engaging portion 15A is formed on the back side in addition to the front surface portion in the attaching / detaching direction A of the unit pressing member 15, and on the other hand, the engaging portion 15A is also engaged with the engaging portion on the back side of the upper surface of the unit 30.
- a hole may be formed, and a locking portion and an engagement hole may be provided at two positions in the front and rear direction along the attaching / detaching direction A. If it does in this way, unit 30 will be locked in two places before and behind in the direction of attachment and detachment, and it can lock more certainly.
- attachment members 15B and 15B are provided on both ends in the direction orthogonal to the attaching / detaching direction A on the upper surface portion 14 of the unit casing 11 in the pressing member 15, the present invention is not limited thereto.
- attachment engaging portions may be formed at both ends along the attaching / detaching direction A of the pressing member 15.
- the mounting engaging portion in the front in the attaching / detaching direction A is formed in the same shape and size as the locking portion 15A, the locking portion can also be used. As a result, it is only necessary to provide the bending forming portions in two places, and the processing effort can be reduced.
- the housing structure 10 for electronic devices was applied to the tower type server 25, in addition to the tower type server 25, it is applicable to general information equipment.
- the HDD has been described as the vibration generation source.
- the present invention may be applied to all devices having an operation unit such as a disk drive device and a cooling fan other than the HDD.
- the unit housing is provided with a unit support mechanism having a roller member that supports the electronic device unit and guides the electronic device unit at the time of attachment / detachment, and the roller member is constituted by an anti-vibration member made of an elastic material.
- the unit casing is formed into a quadrangular cross-sectional shape consisting of four surrounding surfaces, 4.
- the unit pressing member is provided with a locking portion so that the electronic device unit attached to the unit housing does not move in the attaching / detaching direction, and the locking portion is formed on the electronic device unit.
- a housing structure for electronic equipment characterized in that it can be engaged with a joint hole.
- the casing structure for an electronic device according to the present invention can be used when an electronic device unit holding an electronic device as a vibration source is mounted on a general information device in addition to a tower server.
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Abstract
Description
これらの振動発生源から生じた振動は、電子機器を保持した電子機器用ユニットがユニット用筐体に装着された際、そのユニット用筐体の各部に伝播して騒音発生源となる。
さらに、HDDを複数台搭載する場合、互いの振動が干渉する際に、僅かなHDD振動数の差からうなり波形が表れ、耳障りな音としてクレームの要因となる場合があり、対策の必要性があった。
この解決策の有効な一つの例としては、振動発生源からの振動を騒音の放出源となりうるユニット用筐体の各部に伝播させないことである。
すなわち、電子機器を保持する電子機器用ユニット130には、振動発生源としての例えばHDD135が4個保持されている。この電子機器用ユニット130は、例えば、タワー型サーバ機器125のユニット用筐体111に対して、矢印A方向(着脱方向)に沿って移動可能となっており、かつ、容易に着脱可能となっている。
底面部112には、スライド用プレート112Aが設けられており、このスライド用プレート112Aの上面に電子機器用ユニット130の底面が当接し、かつスライドできるようになっている。
側面部113,113の互いに対向する内面部には、それぞれ上下方向に3本のガイドレール113Aが矢印A方向に沿って設けられている。
これに対して、ユニット用筐体111の上面部114には、ユニット押え部材115の取付け用係合部115B,115Bと係合する係合孔114B,114Bが形成されている。
この特許文献1に開示された音響機器の収納装置では、箱状のスリーブの4面に弾性部材からなる複数個のローラを設けた構成となっている。そのため、音響機器のスリーブへの収納および離脱が容易となり、ローラの弾性により音響機器が押圧されるので、筐体の振動が阻止されると共に外部からスリーブに加えられる振動が遮断される構成となっている。
この特許文献2に開示された引き出し装置では、収納部に収納されるビデオテープレコーダーを載置台に乗せて引き出す、筐体の側壁の下端部の桟のヘリサートナットにローラが回転自在に取り付け、載置台の両端部のスライダー金具によりローラを抱くようにして載置台をスライドして引き出すような構成となっている。
また、MD装置の収納等において、スリーブに挿入のMD装置をローラの弾性で押圧する音響機器の収納装置も知られている(特許文献3参照)。
すなわち、図6に示す電子機器用筐体構造110では、電子機器用ユニット130が、ユニット用筐体111のスライド用プレート112Aおよびガイドレール113Aと接触して着脱可能にスライドされており、ユニット用筐体111は、底面部112ではシート状の低弾性素材116と、側面部ではガイドレール113Aの間のシート状の低弾性素材117と、それぞれ直接に接触していない。
そのため、電子機器用ユニット130内に保持されている、例えばHDDの駆動に伴う振動が、シート状の低弾性素材116,117に直接伝播せずにユニット用筐体111に直接伝播するため、防振効果が不十分であり、筐体からの騒音発生を十分に抑制することができないという問題が生じている。
図7には、この既存例による振動伝播防止構造110での音圧の時間変化が示されている。この音圧の時間変化は、マイクロフォンによる音圧測定によって行われた結果を示したものである。
図7の測定結果からわかるように、固有振動の振幅が大きく、そのため、ユニット用筐体111に伝わる振動が大きいので騒音が発生するものであった。
しかし、上記音響機器の収納装置はMD装置用である。このMD装置は高さが低いため、音響機器の収納装置も高さが低いものとなっている。そのため、このような構成の収納装置を、HDD等のように高さの高い製品用として、しかも複数個(例えば4個)を保持できるように製作しようとすると、全体の長さが長いローラが必要となり、ローラの重量が重くなるため、音響機器の収納装置の重量もが嵩むという問題がある。
また、長さが長く重量も重いローラを取付けた後、何らかの理由により、そのローラが故障した場合、その1本ごと交換する必要があり効率が悪い。
また、特許文献3に開示された音響機器の収納装置でも、特許文献1と同様の問題がある。
本願発明の目的は、電子機器用ユニット内に保持された電子機器から発生する振動がユニット用筐体に伝播することによる騒音発生を抑制する電子機器用筐体構造を提供することにある。
また、電子機器用ユニットがユニット用筐体からの着脱時にローラ部材でガイドされるので、着脱が容易である。
さらに、ローラ部材が防振部材で構成され、かつ電子機器用ユニットの着脱時に回転するので、低弾性材料の防振部材がせん断力によって大きく変形することを防ぐことができ、防振部材の性能低下を防止する。
このユニット用筐体11には、ユニット30を支持しかつ着脱時に当該ユニット30をガイドするユニット支持機構18が複数箇所に設けられており、これらのユニット支持機構18は回転自在なローラ部材19を備えている。そして、このローラ部材19は弾性材料、特に低弾性材料からなる防振部材で構成されている。
このようなユニット30は、例えば、上記ユニット用筐体11を備えたタワー型サーバ機器25に装着される。
ユニット30の上面でHDD35の挿入口側には、後で詳細を説明する押え部材15に設けられた係止部15Aと係合する係合孔30Aが形成されている。
すなわち、ユニット支持機構18は、ユニット用筐体11の底面部12および対向する側面部13にそれぞれ複数個(本実施形態では各4個づつ)設けられており、ユニット支持機構18は、前述のように回転自在なローラ部材19を備えて構成されている。
そのため、各ローラ部材19の外周面とユニット30の周囲4面のうち3面の外周面とが直接接触した状態、つまり浮いた状態で、ユニット30が支持されている。
また、対向する側面部13,13には、着脱方向Aに沿って手前側と奥側との二列に、それぞれローラ部材19を有するユニット支持機構18が2個づつ配置されている。
底面部12と側面部13,13との着脱方向Aに沿って配置されたユニット支持機構18は、それぞれ手前側と奥側との間隔が略同じ寸法に設定されている。
ここで、電子機器用ユニット30においては、HDD等の振動発生源から発生する固有振動における振幅が極小となる箇所(振動の節)を支持すれば、効果的にユニット用筐体11への振動絶縁を行うことができるものである。
そして、この状態が、図1,3に示すように、前後方向のローラ部材19のそれぞれに(イ)、(ロ)を付して示されている。
すなわち、図5は、マイクロフォンによる音圧測定によって計測された図であり、測定では振動発生源として4個のHDDを搭載した。
HDDの回転数は15000rpmであり、これによって発生する振動の主要振動数は、250Hz(=15000/60)である。したがって、HDDに由来する音に着目するために、バンドパス・フィルタによって、中心周波数が250Hzのバンド帯の音波を抽出した。
軸部材20は、金属あるいは硬質プラスチックで形成されている。
上面部21Aの所定位置には、上記ユニット支持機構18のローラ部材19を回転自在に取付けるために開口部21Cが形成されている。
この軸支持部21Dは、上記ローラ部材19が着脱方向Aに沿って回転自在となるように、着脱方向Aと直交する方向に所定間隔をおいて設けられている。
すなわち、側面部13,13の所定位置には、上記ユニット支持機構18を回転自在に取付けるために開口部13A(図2参照)が形成されている。側面部13,13にそれぞれ配置されるユニット支持機構18は、その両端の軸部材20が垂直方向に向くように設けられ、そのため、ローラ部材19は垂直軸回りに回転自在となっている。
この際、ユニット支持機構18の荷重を受けるため、側面部13,13の該当位置には、垂直方向に配置されているユニット支持機構18の上下の軸部材20のうち、下側の軸部材20の下面と当接する軸受け部(図略)が、設けられている。
ユニット押え部材15は、略四角形形状に形成されており、ユニット用筐体11の前記着脱方向Aの前面部には、断面L字状に曲げて形成された前記係止部15Aが形成されている。
そのため、係止部15Aと係合孔30Aとを係合させることで、ユニット用筐体11に装着されたユニット30が着脱方向Aへ抜け出さないように防止することができる。
押圧部材16は、ユニット支持機構18のローラ部材19と同様のゴムまたはエラストマーで例えば円柱状に形成されている。そして、ユニット用筐体11に装着されたユニット30の上面を所定の圧力で押し付けて支持できるようになっている。
そのため、ユニット30がユニット用筐体11に装着された後、ユニット押え部材15をユニット用筐体11の上面部14に被せると、ユニット押え部材15の係止部15Aとユニット30の係合孔30Aとが係合すると共に、ユニット押え部材15の取付け用係合部15B,15Bとユニット用筐体11の上面部14の係合孔14B,14Bとが係合する。
まず、装着に際しては、ユニット用筐体11のユニット押え部材15を取り外しておく。次いで、所定のHDD35が保持されたユニット30を着脱方向Aに沿って移動させ、ユニット用筐体11内に挿入する。
次いで、押え部材15の係止部15Aをユニット用筐体11の上面部14の貫通孔14Cに挿通させ、さらに、ユニット30の係合孔30Aに係合させる。同時に、押え部材15の取付け用係合部15B,15Bをユニット用筐体11の上面部14の係合孔14B,14Bに係合させる。
すなわち、まず、押え部材15を上方に持ち上げて、その押え部材15の係止部15Aとユニット30の係合孔30Aとの係合を外すと共に、押え部材15の取付け用係合部15B,15Bとユニット用筐体11の上面部14の係合孔14B,14Bとの係合を外す。
(1)内部に振動発生源となるHDD35を保持したユニット30が、ローラ部材19を有するユニット支持機構18を介してユニット用筐体11に支持されているので、ユニット30とユニット用筐体11とが直接接触せず、ユニット30は浮構造で支持されている。そして、ローラ部材19が低弾性材料からなる防振部材で構成されているので、振動発生源であるHDD35から生じる振動のユニット用筐体11への伝播が抑制される。その結果、HDD35から発生する振動がユニット用筐体11に伝播しそこから音波として放射されることを防止することができ、騒音の発生を抑制することができる。
この場合、着脱方向Aの前方の取付け用係合部を、前記係止部15Aと同様の形状および大きさに形成すれば、係止部を兼用することができる。その結果、折り曲げ形成部を2箇所に設ければよく、加工の手間が少なくてすむ。
また、振動発生源として、実施形態ではHDDを用いて説明したが、HDD以外のディスク駆動装置、冷却ファン等の稼動部を有するデバイス全般に対しても適用してもよい。
内部に振動発生源となる電子機器を保持した電子機器用ユニットを着脱可能に装着するユニット用筐体を備え、
このユニット用筐体に、前記電子機器用ユニットを支持しかつ着脱時に当該電子機器用ユニットをガイドするローラ部材を有するユニット支持機構を設け、前記ローラ部材を弾性材料からなる防振部材で構成したことを特徴とする電子機器用筐体構造。
付記1に記載の電子機器用筐体構造において、
前記ユニット用筐体の前記上面の開口部に、前記ユニット用筐体に装着された前記電子機器用ユニットの上面を押え付けるユニット押え部材を設けたことを特徴とする電子機器用筐体構造。
付記2に記載の電子機器用筐体構造において、
前記ユニット用筐体を周囲4面からなる断面四角枠形状に形成し、
前記ユニット用筐体の前記上面を除く3面のそれぞれに、前記電子機器用ユニットの3面のそれぞれと当接する4個の前記ローラ部材を設けたことを特徴とする電子機器用筐体構造。
付記3に記載の電子機器用筐体構造において、
前記ユニット押え部材に、前記ユニット用筐体に装着された前記電子機器用ユニットが着脱方向に移動しないように係止部を設けると共に、当該係止部を前記電子機器用ユニットに形成された係合孔に係合可能としたことを特徴とする電子機器用筐体構造。
付記4に記載の電子機器用筐体構造において、
前記ローラ部材を、前記ユニット用筐体の前記3面のうち、底面部にあっては前記着脱方向に沿って所定間隔をおいて前後方向にそれぞれ2個づつ、対向する側面部にあっては前記着脱方向に沿って所定間隔をおいて前後方向にそれぞれ2個づつ配置したことを特徴とする電子機器用筐体構造。
付記5に記載の電子機器用筐体構造において、
前記各ローラ部材が配置された前後方向の前記所定間隔は、前記電子機器用ユニットが前記ユニット用筐体に装着されたとき前記電子機器用ユニットの固有振動の振幅が極小となる二つの節の間隔であることを特徴とする電子機器用筐体構造。
付記6に記載の電子機器用筐体構造において、
前記ユニット押え部材の裏面に、前記電子機器用ユニットの上面を押さえる押圧部材を設けたことを特徴とする電子機器用筐体構造。
付記7に記載の電子機器用筐体構造において、
前記押え部材を前記ユニット用筐体に対して着脱可能としたことを特徴とする電子機器用筐体構造。
付記8に記載の電子機器用筐体構造において、
前記電子機器用ユニットが複数のハードディスクドライブ装置を搭載したHDD保持電子機器用ユニットであることを特徴とする電子機器用筐体構造。
11 ユニット用筐体
12 底面部
13 側面部
14 上面部
14B 係合孔
15 ユニット押え部材
15A 係止部
16 押圧部材
18 ユニット支持機構
19 ローラ部材
30 電子機器用ユニット
35 HDD
Claims (9)
- 内部に振動発生源となる電子機器を保持した電子機器用ユニットを着脱可能に装着するユニット用筐体を備え、
このユニット用筐体に、前記電子機器用ユニットを支持しかつ着脱時に当該電子機器用ユニットをガイドするローラ部材を有するユニット支持機構を設け、前記ローラ部材を弾性材料からなる防振部材で構成したことを特徴とする電子機器用筐体構造。 - 請求項1に記載の電子機器用筐体構造において、
前記ユニット用筐体の前記上面の開口部に、前記ユニット用筐体に装着された前記電子機器用ユニットの上面を押え付けるユニット押え部材を設けたことを特徴とする電子機器用筐体構造。 - 請求項2に記載の電子機器用筐体構造において、
前記ユニット用筐体を周囲4面からなる断面四角枠形状に形成し、
前記ユニット用筐体の前記上面を除く3面のそれぞれに、前記電子機器用ユニットの3面のそれぞれと当接する4個の前記ローラ部材を設けたことを特徴とする電子機器用筐体構造。 - 請求項3に記載の電子機器用筐体構造において、
前記ユニット押え部材に、前記ユニット用筐体に装着された前記電子機器用ユニットが着脱方向に移動しないように係止部を設けると共に、当該係止部を前記電子機器用ユニットに形成された係合孔に係合可能としたことを特徴とする電子機器用筐体構造。 - 請求項4に記載の電子機器用筐体構造において、
前記ローラ部材を、前記ユニット用筐体の前記3面のうち、底面部にあっては前記着脱方向に沿って所定間隔をおいて前後方向にそれぞれ2個づつ、対向する側面部にあっては前記着脱方向に沿って所定間隔をおいて前後方向にそれぞれ2個づつ配置したことを特徴とする電子機器用筐体構造。 - 請求項5に記載の電子機器用筐体構造において、
前記各ローラ部材が配置された前後方向の前記所定間隔は、前記電子機器用ユニットが前記ユニット用筐体に装着されたとき前記電子機器用ユニットの固有振動の振幅が極小となる二つの節の間隔であることを特徴とする電子機器用筐体構造。 - 請求項6に記載の電子機器用筐体構造において、
前記ユニット押え部材の裏面に、前記電子機器用ユニットの上面を押さえる押圧部材を設けたことを特徴とする電子機器用筐体構造。 - 請求項6に記載の電子機器用筐体構造において、
前記押え部材を前記ユニット用筐体に対して着脱可能としたことを特徴とする電子機器用筐体構造。 - 請求項8に記載の電子機器用筐体構造において、
前記電子機器用ユニットが複数のハードディスクドライブ装置を搭載したHDD保持電子機器用ユニットであることを特徴とする電子機器用筐体構造。
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CN102467944B (zh) * | 2010-11-17 | 2016-04-13 | 北京华夏一脉拜拜网网络科技有限公司 | 硬盘固定架 |
CN103839566A (zh) * | 2012-11-20 | 2014-06-04 | 英业达科技有限公司 | 防震构件及其壳体结构 |
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2014
- 2014-03-12 US US14/768,089 patent/US20150378402A1/en not_active Abandoned
- 2014-03-12 JP JP2015505510A patent/JP6272297B2/ja active Active
- 2014-03-12 EP EP14763893.6A patent/EP2975612A4/en not_active Withdrawn
- 2014-03-12 CN CN201480014330.4A patent/CN105074824A/zh active Pending
- 2014-03-12 WO PCT/JP2014/056471 patent/WO2014142164A1/ja active Application Filing
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JPH09191186A (ja) | 1996-01-10 | 1997-07-22 | Nippon Columbia Co Ltd | 音響機器の収納装置 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023176171A (ja) * | 2022-05-31 | 2023-12-13 | 株式会社タツノ | 安全継手用収容装置 |
JP7459896B2 (ja) | 2022-05-31 | 2024-04-02 | 株式会社タツノ | 安全継手用収容装置 |
KR102468880B1 (ko) * | 2022-09-15 | 2022-11-21 | 주식회사 윈박스 | 양면 개방형 박스 구조체 |
Also Published As
Publication number | Publication date |
---|---|
EP2975612A1 (en) | 2016-01-20 |
JP6272297B2 (ja) | 2018-01-31 |
CN105074824A (zh) | 2015-11-18 |
US20150378402A1 (en) | 2015-12-31 |
EP2975612A4 (en) | 2016-11-16 |
JPWO2014142164A1 (ja) | 2017-02-16 |
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