WO2017022070A1 - ファンユニット取り付け構造および電子機器 - Google Patents
ファンユニット取り付け構造および電子機器 Download PDFInfo
- Publication number
- WO2017022070A1 WO2017022070A1 PCT/JP2015/072040 JP2015072040W WO2017022070A1 WO 2017022070 A1 WO2017022070 A1 WO 2017022070A1 JP 2015072040 W JP2015072040 W JP 2015072040W WO 2017022070 A1 WO2017022070 A1 WO 2017022070A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fan unit
- fan
- holder
- housing
- piece
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
- F04D29/602—Mounting in cavities
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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
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20172—Fan mounting or fan specifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
Definitions
- the present invention relates to a fan unit mounting structure and an electronic device in which a fan unit having a fan device that rotates a fan and a fan holder that holds the fan device is attached to a casing of the electronic device.
- the fan unit is attached to the casing of the electronic device with a vibration-proof fan cover interposed.
- the anti-vibration fan cover is made of an elastic material, and includes a cover main body that covers the outer peripheral surface of the fan unit, and two or more support protrusions that are integrally provided on the cover main body.
- the fan unit in patent document 1 is a member corresponded to the said fan apparatus.
- the fan unit is elastically supported with respect to the housing by the support convex portion of the vibration-proof fan cover.
- the vibration generated in the fan unit is absorbed by the anti-vibration fan cover, so that the propagation of vibration from the fan unit to the housing of the electronic device is suppressed, and noise can be reduced.
- the fan holder made of an elastic material such as the above-mentioned anti-vibration fan cover When the fan holder made of an elastic material such as the above-mentioned anti-vibration fan cover is screwed to the housing of the electronic device, the fan holder itself is compressed by screw tightening, so that the elastic force is reduced and the anti-vibration effect is obtained. It will fade. Therefore, the fan unit configured by holding the fan device in the elastic fan holder is attached to the casing of the electronic device using a mounting member different from the fan unit without screwing the fan holder itself. There are many cases.
- Patent Document 1 describes a mounting structure in which a fan unit is attached to an electronic device using a casing and a mounting bracket as the mounting member.
- the fan unit to which the anti-vibration fan cover is attached is accommodated in the casing, and the casing is attached to the mounting bracket by screwing.
- the fan unit is elastically supported by the support convex portion of the anti-vibration fan cover in the space formed by the casing and the mounting bracket.
- the mounting bracket to which this casing is attached is screwed to the housing side of the electronic device. In this way, the fan unit is attached to the casing of the electronic device via the casing and the attachment bracket.
- the fan unit mounting structure is preferably a structure that does not use the mounting member as described above.
- Patent Document 1 also describes a mounting structure that does not use the mounting member as described above.
- a space constituted by one surface of the casing of the electronic device and a part of the chassis facing this surface is used as a mounting space for the fan unit.
- the fan unit is inserted into the mounting space while the support convex portion of the vibration-proof fan cover is press-fitted.
- the support convex portion of the vibration-proof fan cover is sandwiched between the one surface of the housing constituting the attachment space and a part of the chassis while being pressed.
- the fan unit is elastically supported in the mounting space by the support convex portion of the vibration-proof fan cover.
- the support convex part of the anti-vibration fan cover will be in the state which pressed the one surface of the housing
- the mounting position of the fan unit in the electronic device is designed as an appropriate position where an air flow is formed by the fan unit that suppresses an increase in the internal temperature of the electronic device within an allowable range. Therefore, in an electronic device in which the fan unit is not properly mounted at the mounting position, the flow of air in the housing is biased, and an increase in internal temperature cannot be suppressed, resulting in malfunction due to the temperature increase.
- This invention solves the said subject, and it aims at obtaining the fan unit attachment structure and electronic device which can prevent the attachment mistake of a fan unit with a simple structure.
- the fan unit mounting structure includes a fan unit, a piece, a first elastic engagement portion, and a second elastic engagement portion.
- the fan unit includes a fan device that rotates the fan and an elastic holder that holds the fan device. One part is each provided in the position which pinches
- the first elastic engagement portion is provided on the outer peripheral portion of the holder corresponding to each of the pieces.
- the second elastic engagement portion is provided in one piece, and elastically engages with the first elastic engagement portion in a state where the fan unit is disposed at the attachment position, and holds the fan unit at the attachment position. To do.
- the fan unit is housed in a simple configuration using the first elastic engagement portion formed in the elastic holder and the second elastic engagement portion formed in one piece in the housing. Can be attached to. Further, the second elastic engagement portion is elastically engaged with the first elastic engagement portion in a state where the fan unit is disposed at the fan unit mounting portion. Thereby, the operator can check the mounting state of the fan unit based on the presence or absence of a click feeling generated by this elastic engagement, and therefore, it is possible to prevent a fan unit mounting error.
- FIG. 2 is a cross-sectional arrow view showing a state where the electronic apparatus according to the first embodiment is disassembled by cutting along the line AA in FIG.
- FIG. 3 is a side view showing the fan unit in the first embodiment.
- FIG. 3 is an enlarged side view showing a piece formed on the casing of the electronic device according to the first embodiment. It is an enlarged side view which shows a mode that the positioning convex part of the fan holder in Embodiment 1 carries out fitting engagement with the notch part of one part.
- FIG. 1 is a cross-sectional arrow view showing a state where the electronic apparatus according to the first embodiment is disassembled by cutting along the line AA in FIG.
- FIG. 3 is a side view showing the fan unit in the first embodiment.
- FIG. 3 is an enlarged side view showing a piece formed on the casing of the electronic device according to the first embodiment.
- It is an enlarged side
- FIG. 7 is a cross-sectional arrow view showing a state in which the fan unit mounting structure according to Embodiment 1 is cut along the line DD in FIG. 6.
- FIG. 3 is a front view showing an attachment position in a housing in the electronic device according to the first embodiment.
- FIG. 1 is a perspective view showing an electronic apparatus 1 according to Embodiment 1 of the present invention.
- FIG. 2 is a cross-sectional arrow view showing a state in which the electronic device 1 is cut and taken apart along line AA in FIG.
- FIG. 3 is a side view showing the fan unit 4.
- the electronic device 1 is an electronic device including the fan unit mounting structure according to the present invention, and is realized as an in-vehicle electronic device such as a navigation device, for example.
- the fan unit 4 is housed in a space configured by assembling the top plate 3 to the housing 2.
- the housing 2 is a metal box-shaped member such as a sheet metal whose upper surface is open, and a vent 2a-1 is formed on one side surface 2a thereof.
- the inside of the portion of the side surface 2a where the vent 2a-1 is formed is the attachment position 5 to which the fan unit 4 is attached.
- an attachment surface 2a-2 projecting inward of the housing 2 is formed at the attachment position 5, and the fan unit 4 is attached in the housing 2 in contact with the attachment surface 2a-2.
- the piece 2c is a plate-like member extending toward the inside of the housing 2, and is provided on both the left and right sides of the mounting surface 2a-2 with a gap W1 as shown in FIG. That is, the piece 2c is provided at a position sandwiching the fan unit 4 disposed at the attachment position 5 of the housing 2 from both sides.
- the throttle portion 2 d is provided by drawing the bottom surface 2 b of the housing 2 so as to protrude to the inside of the housing 2, and serves as a base for the fan unit 4 disposed at the attachment position 5.
- the contact portion 3 a is provided by being drawn so as to protrude from the top plate 3, and contacts the contact portion 7 d described later while applying pressure to the contact portion 7 d in a state where the top plate 3 is assembled to the housing 2.
- the fan unit 4 includes a fan device 6 and a fan holder 7.
- the fan device 6 includes a fan motor 6a that rotates the fan 6b and a frame 6c.
- a fan 6b is integrally attached to a motor rotation shaft, and the fan 6b rotates together with the motor rotation shaft.
- the frame 6c is configured as a quadrangular frame, and the fan motor 6a is supported by a support branch that extends inward from the peripheral edge of the opening of the frame 6c.
- the fan holder 7 is a component that embodies the holder according to the present invention, and is, for example, a frame that holds the fan device 6 on its inner periphery as shown in FIG.
- the fan holder 7 is made of an elastic material such as an elastomer that absorbs vibration generated in the fan device 6. That is, the fan device 6 is attached to the attachment position 5 with the elastic fan holder 7 interposed.
- the positioning convex portion 7a is a component embodying the first elastic engagement portion in the present invention, and is provided so as to protrude from both sides of the fan holder 7 corresponding to each of the two pieces 2c. It is a columnar member. As shown in FIG. 3, the positioning convex portion 7a is formed integrally with a positioning portion 7b-2 described later in the fan holder 7 and has elasticity.
- the build-up portion 7b is provided by building up the outer peripheral portion of the fan holder 7, and includes an inclined portion 7b-1 and a positioning portion 7b-2 as shown in FIGS.
- the inclined portion 7b-1 is laid so as to gradually protrude outward from the outer peripheral portion of the fan holder 7, and the portion that protrudes most outward is connected to the positioning portion 7b-2.
- the positioning portion 7 b-2 is a convex portion that protrudes outward from the outer peripheral portion of the fan holder 7, and comes into contact with the piece portion 2 c in a state where the fan unit 4 is disposed at the attachment position 5. Since the interval W2 between the positioning portions 7b-2 in the left and right build-up portions 7b of the fan holder 7 is narrower than the interval W1 between the left and right side pieces 2c, the positioning portion 7b-2 Contact with 2c while applying pressure.
- the positioning projection 7c is provided so as to protrude from the bottom of the fan holder 7 as shown in FIG. 2, and fits into a hole 2d-1 described later in a state where the fan unit 4 is disposed at the mounting position 5. That is, the positioning projection 7c is fitted into the hole 2d-1 in a state where the fan unit 4 is in contact with the throttle 2d.
- the contact portion 7d of contact parts are the convex parts provided by protruding from the outer peripheral part on the opposite side to the positioning convex part 7c in the fan holder 7.
- FIG. Further, the contact portion 7d is a convex portion having an L-shaped cross section as shown in FIG. 3, and is elastically crushed downward when a force is applied from above. 2 and 3 show the case where there is one contact portion 7d, two or more contact portions 7d may be provided. In other words, a plurality of contact portions 7d may be provided as long as they are within a range in which the top plate 3 can be brought into contact with the contact portion 3a when assembled to the housing 2.
- FIG. 4 is an enlarged side view showing the piece 2 c formed in the housing 2 of the electronic device 1.
- FIG. 5 is an enlarged side view showing a state in which the positioning projection 7a of the fan holder 7 is fitted and engaged with the notch 2e of the piece 2c.
- the notch 2e is a component that embodies the second elastic engagement portion of the present invention, and is formed in a hole 2e-1 cut into a circle and a part thereof as shown in FIG. Open end 2e-2.
- the fan unit 4 is inserted toward the attachment position 5 in the B direction while contacting the attachment surface 2a-2 shown in FIG.
- the B direction is a direction in which the fan unit 4 is inserted between the left and right pieces 2c toward the aperture 2d.
- the fan unit 4 can be attached to the attachment position 5 of the housing 2 only by inserting the fan unit 4 in the B direction.
- the interval W2 between the positioning portions 7b-2 in the left and right build-up portions 7b of the fan holder 7 is narrower than the interval W1 between the left and right pieces 2c.
- the fan unit 4 when the fan unit 4 is further inserted in the B direction after the piece 2c comes into contact with the inclined portion 7b-1 of the build-up portion 7b, the piece 2c applies pressure to the inclined portion 7b-1. While giving, it moves to the direction which goes up the inclined surface relatively.
- the positioning convex part 7a of the fan holder 7 is opened at the open end 2e-- of the notch part 2e in the piece part 2c as shown by the chain line in FIG. 2 is approached. Since the diameter E of the positioning convex portion 7a is larger than the interval F between the open ends 2e-2, when the fan unit 4 is further inserted, the positioning convex portion 7a is stopped at the open end 2e-2.
- the positioning projection 7a passes through the open end 2e-2 while being elastically deformed.
- the positioning convex portion 7a completely passes through the open end 2e-2, it is elastically engaged with the hole portion 2e-1 by its elastic restoring force, and this operation allows the operator to make the fan unit 4 suitable. It is possible to obtain a click feeling indicating that it is attached to a proper position.
- the fan unit 4 is in contact with the mounting surface 2a-2 of the housing 2, and the piece portion 2c is positioned on the positioning portion 7b of the build-up portion 7b. -2 in contact with pressure.
- the fan unit 4 is held in the housing 2 by the piece 2c and the notch 2e, and is positioned in the front-rear direction and the left-right direction.
- the front-rear direction is a direction in which the fan unit 4 flows air and is a direction along the rotation axis of the fan device 6.
- the left-right direction is a direction facing the piece 2c
- the up-down direction is a direction in which the bottom surface 2b and the top plate 3 are arranged.
- the fan unit 4 is positioned and held in this way. Since the operator can determine the mounting state of the fan unit 4 based on the presence or absence of a click feeling, an installation error of the fan unit 4 can be prevented.
- this invention is not limited to this structure.
- a so-called snap-fit structure in which an engagement claw provided in the fan holder 7 is elastically engaged with a hole provided in the piece 2c may be used. That is, in the present invention, any structure may be used as long as the fan unit 4 is elastically engaged with the fan unit 4 disposed at the attachment position 5 to give the operator a click feeling.
- FIG. 6 is a front view showing the fan unit mounting structure according to the first embodiment.
- FIG. 7 is an enlarged view of the fan unit mounting structure according to Embodiment 1 as viewed from the direction C of FIG.
- FIG. 8 is a cross-sectional arrow view showing a state in which the fan unit mounting structure according to Embodiment 1 is cut along the line DD in FIG.
- the positioning projection 7a is fitted in the hole 2e-1
- the fan unit 4 is in a state of riding on the throttle portion 2d.
- the positioning projection 7c of the fan holder 7 is fitted in the hole 2d-1 of the throttle 2d as shown in FIG. 7, and the fan unit 4 is in contact with the mounting surface 2a-2.
- the lower part of the fan unit 4 is also positioned in the front-rear direction and the left-right direction.
- the top plate 3 When the fan unit 4 is held at the attachment position 5, the top plate 3 is assembled to the housing 2. At this time, the contact portion 3 a of the top plate 3 comes into contact with the contact portion 7 d formed on the top of the fan holder 7 while applying pressure. In addition, when the reaction force of the contact part 7d is too large with respect to the pressure from the contact part 3a, the malfunction that the top plate 3 floats by the contact part 7d generate
- the contact portion 7d is formed in an L-shaped cross section, and has a structure that elastically deforms so as to collapse downward as shown in FIG. The reaction force is reduced by this elastic deformation, and the top 3 is not lifted.
- the fan unit 4 is positioned in the vertical direction by the throttle portion 2d and the contact portion 3a. Therefore, since the fan unit 4 is positioned in the front-rear direction, the left-right direction, and the up-down direction at the attachment position 5, the fan unit 4 is held in the housing 2 without rattling.
- FIG. 9 is a front view showing the attachment position 5 in the housing 2 of the electronic device 1 according to the first embodiment.
- the vent 2a-1 is an opening formed when a part of the housing 2 is cut and bent as a piece 2c.
- a treatment for closing the opening formed in the mark formed by cutting and bending the part so as to prevent foreign matter from entering from the outside has been required.
- the opening is used as the vent 2a-1. Thereby, it is not necessary to block the opening, and the sheet metal constituting the housing 2 can be used efficiently.
- the notch 2e of the piece 2c is elastically engaged with the positioning convex portion 7a in a state where the fan unit 4 is disposed at the mounting position 5. Together, the fan unit 4 is held at the mounting position 5.
- the positioning convex portion 7a is a convex portion protruding from the outer peripheral portion of the fan holder 7, and the cutout portion 2e is a cutout portion whose open end 2e-2 is opened narrower than the width of the positioning convex portion 7a. is there.
- the positioning convex portion 7a is elastically fitted to the cutout portion 2e through the open end 2e-2.
- the fan can be configured with a simple configuration using the positioning convex portion 7a formed on the fan holder 7 and the cutout portion 2e of the piece portion 2c formed on the housing 2 without using screws or other attachment members.
- the unit 4 can be attached to the housing 2. Further, the operator can easily recognize that the fan unit 4 is disposed at the appropriate mounting position 5 by the click feeling generated by the elastic engagement. Therefore, the operator can determine the attachment state based on the presence or absence of a click feeling, and can prevent an installation error of the fan unit 4.
- the fan unit mounting structure according to Embodiment 1 is provided on the outer periphery of the fan holder 7 and is a built-up portion that contacts the piece 2c while applying pressure to the piece 2c in a state where the fan unit 4 is disposed at the mounting position 5. 7b. By comprising in this way, the fan unit 4 can be positioned in the left-right direction in which the build-up part 7b was provided.
- the fan unit mounting structure according to Embodiment 1 includes a throttle portion 2d, a positioning convex portion 7c, a contact portion 7d, and a contact portion 3a.
- the throttle portion 2d is provided so as to protrude inside the housing 2, serves as a pedestal for the fan unit 4 disposed at the attachment position 5, and has a hole portion 2d-1 formed on the seat surface.
- the positioning convex portion 7 c is provided so as to protrude from the outer peripheral portion of the fan holder 7, and fits into the hole 2 d-1 in a state where the fan unit 4 is disposed at the attachment position 5.
- the contact portion 7d is provided so as to protrude from the outer peripheral portion of the fan holder 7 opposite to the positioning convex portion 7c.
- the contact portion 3 a is provided so as to protrude from the top plate 3, and contacts the contact portion 7 d while applying pressure to the contact portion 7 d in a state where the top plate 3 is assembled to the housing 2.
- the fan unit 4 can be positioned in the up-down direction sandwiched between the throttle portion 2d and the contact portion 3a. Further, since the positioning projection 7c is fitted into the hole 2d-1, the fan unit 4 can be positioned in the front-rear direction and the left-right direction.
- the air vent 2a-1 that is taken in and out of the housing 2 by the rotation of the fan has a part of the housing 2 cut and bent as a piece 2c.
- any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.
- the fan unit mounting structure according to the present invention is suitable for, for example, an in-vehicle electronic device to which vibration due to running of a vehicle is applied because the fan unit is mounted at an appropriate mounting position in the housing.
Abstract
Description
しかしながら、ファンを回転させるファン装置が電子機器の筐体に直に取り付けられると、ファンの回転でファン装置に発生する振動が筐体に伝播して騒音が大きくなるという問題があった。
この取り付け構造では、防振ファンカバーが装着されたファンユニットをケーシングに収容し、このケーシングを取り付けブラケットにねじ止めして取り付ける。
このとき、ファンユニットは、ケーシングと取り付けブラケットで構成される空間内で防振ファンカバーの支持凸部によって弾性的に支持される。このケーシングを取り付けた取り付けブラケットを電子機器の筐体側にねじ止めして取り付ける。
このようにして、ファンユニットはケーシングと取り付けブラケットを介して電子機器の筐体に取り付けられる。
また、取り付け部材を設けた分だけ取り付け作業の工程が増えるため、取り付け作業の繁雑化と長時間化が懸念される。従って、ファンユニットの取り付け構造としては、上記のような取り付け部材を使用しない構造が望ましい。
ファンユニットは、防振ファンカバーの支持凸部を圧入させながら取り付け空間に挿入される。このとき、防振ファンカバーの支持凸部が、取り付け空間を構成する筐体の一面とシャーシの一部を押圧した状態で、これらの間に挟み込まれる。
これにより、ファンユニットは、防振ファンカバーの支持凸部によって上記取り付け空間内に弾性的に支持される。
このように中途半端に取り付けられたファンユニットは、筐体から脱落しやすく、電子機器全体の生産性を落とす要因となり得る。
すなわち、ファンユニットは、中途半端な位置においても、支持凸部によって弾性的に支持される。このため、ファンユニットが中途半端に配置された電子機器が、製品として組み上げられる可能性がある。
電子機器におけるファンユニットの取り付け位置は、ファンユニットによって電子機器の内部温度の上昇を許容範囲内に抑える空気の流れが形成される適切な位置が設計されている。従って、ファンユニットが取り付け位置に適切に取り付けられていない電子機器では、筐体内の空気の流れが偏って内部温度の上昇を抑えられず、温度上昇に起因した動作不良を起こす場合がある。
実施の形態1.
図1は、この発明の実施の形態1に係る電子機器1を示す斜視図である。図2は、電子機器1を、図1のA-A線で切断して分解した状態を示す断面矢示図である。図3は、ファンユニット4を示す側面図である。
電子機器1は、この発明に係るファンユニット取り付け構造を備える電子機器であり、例えば、ナビゲーション装置などの車載用電子機器として実現される。また、電子機器1において、ファンユニット4は、筐体2に天板3を組み付けて構成される空間内に収納される。
また、取り付け位置5には、筐体2の内側に突出した取り付け面2a-2が形成されており、ファンユニット4は、取り付け面2a-2に接触した状態で筐体2内に取り付けられる。
すなわち、片部2cは、筐体2の取り付け位置5に配置されたファンユニット4を両側から挟む位置にそれぞれ設けられている。
当たり部3aは、天板3から突出するように絞り加工して設けられ、天板3が筐体2に組み付けられた状態で、後述する接触部7dに圧力を与えながら接触する。
ファン装置6は、図2に示すように、ファン6bを回転させるファンモータ6aおよびフレーム6cを備えている。ファンモータ6aは、モータ回転軸にファン6bが一体的に取り付けられ、ファン6bは、モータ回転軸とともに回転する。フレーム6cは、四角形の枠体として構成されており、ファンモータ6aは、フレーム6cの開口周縁部から内側に延びた支持枝によって支持される。
傾斜部7b-1は、ファンホルダ7の外周部から外側に徐々に張り出すように肉盛りされており、外側に最も張り出した部分が位置決め部7b-2と接続している。
ファンホルダ7の左右の肉盛り部7bにおける位置決め部7b-2同士の間隔W2は、前述した左右両側の片部2cの間隔W1よりも狭くなっているため、位置決め部7b-2は、片部2cに対して圧力を与えながら接触する。
なお、図2および図3では、接触部7dが1つである場合を示したが、2以上の接触部7dを設けてもよい。すなわち、天板3を筐体2に組み付けたときに当たり部3aに接触できる範囲内であれば、複数の接触部7dを設けてもよい。
図4は、電子機器1の筐体2に形成された片部2cを示す拡大側面図である。図5は、ファンホルダ7の位置決め凸部7aを、片部2cの切り欠き部2eに嵌合係合させる様子を示す拡大側面図である。
切り欠き部2eは、この発明における第2の弾発係合部を具体化した構成要素であり、図4に示すように、円形に切り欠かれた孔部2e-1およびその一部に形成された開放端2e-2から構成されている。
B方向は、絞り部2dへ向けて左右の片部2cの間にファンユニット4を挿入する方向である。ファンユニット4は、このB方向に挿入する操作だけで筐体2の取り付け位置5に取り付けることが可能である。
なお、前述したように、ファンホルダ7の左右の肉盛り部7bにおける位置決め部7b-2同士の間隔W2は、左右両側の片部2cの間隔W1よりも狭くなっている。
このため、片部2cが肉盛り部7bの傾斜部7b-1に接触してから、さらにB方向にファンユニット4を挿入していくと、片部2cは、傾斜部7b-1に圧力を与えながら、その傾斜面を相対的に上る方向に移動する。
位置決め凸部7aが孔部2e-1に嵌まった状態において、ファンユニット4は、筐体2の取り付け面2a-2に接触しており、片部2cは、肉盛り部7bの位置決め部7b-2に圧力を与えながら接触している。
なお、前後方向とは、ファンユニット4が空気を流す方向であり、ファン装置6の回転軸に沿った方向である。また、左右方向とは、片部2cに対向する方向であり、上下方向は、底面2bと天板3が配置される方向である。
取り付け位置5では、このようにファンユニット4が位置決めされて保持される。
作業者は、クリック感の有無によってファンユニット4の取り付け状態を判断できるので、ファンユニット4の取り付けミスを防ぐことができる。
例えば、片部2cに設けられた孔部に対して、ファンホルダ7に設けた係合爪が弾発的に係合嵌合する、いわゆる、スナップフィットのような構造であってもよい。すなわち、この発明では、ファンユニット4が取り付け位置5に配置された状態で弾発的に係合して作業者にクリック感を与える構造であればよい。
図6および図8に示すように、位置決め凸部7aが孔部2e-1に嵌まっているとき、ファンユニット4は、絞り部2dに乗った状態となっている。この状態において、ファンホルダ7の位置決め凸部7cは、図7に示すように絞り部2dの孔部2d-1に嵌合しており、ファンユニット4は取り付け面2a-2に接触している。これにより、ファンユニット4の下側の部分も前後方向と左右方向に位置決めされる。
なお、当たり部3aからの圧力に対して接触部7dの反力が大き過ぎると、接触部7dによって天板3が浮き上がるという不具合が発生する。
このようにして、ファンユニット4は、絞り部2dと当たり部3aによって上下方向に位置決めされる。従って、ファンユニット4は、取り付け位置5において前後方向、左右方向および上下方向に位置決めされるので、ガタツキなく筐体2内に保持される。
板金製の筐体2の一部を切り曲げて片部を設ける場合、従来では、外部から異物が侵入しないように片部を切り曲げた跡に形成される開口部を塞ぐ処置を必要としていた。
これに対して、この発明では、上記開口部を通気口2a-1として利用する。これにより、上記開口部を塞ぐ必要がなくなり、筐体2を構成する板金を、効率よく利用することができる。
これにより、ねじあるいは他の取り付け部材を用いることなく、ファンホルダ7に形成された位置決め凸部7aと筐体2に形成された片部2cの切り欠き部2eとを用いた簡易な構成でファンユニット4を筐体2に取り付けることができる。
さらに、作業者は、弾発的な係合で発生したクリック感によりファンユニット4が適切な取り付け位置5に配置されたことを容易に認識できる。
従って、作業者は、クリック感の有無で取り付け状態を判断でき、ファンユニット4の取り付けミスを防ぐことができる。
このように構成することで、肉盛り部7bが設けられた左右方向にファンユニット4を位置決めすることができる。
絞り部2dは、筐体2の内側に突出して設けられ、取り付け位置5に配置されたファンユニット4の台座となり、座面に孔部2d-1が形成されている。位置決め凸部7cは、ファンホルダ7の外周部から突出して設けられ、ファンユニット4が取り付け位置5に配置された状態で孔部2d-1に嵌合する。
接触部7dは、ファンホルダ7における位置決め凸部7cとは反対側の外周部から突出して設けられる。当たり部3aは、天板3から突出して設けられ、天板3が筐体2に組み付けられた状態で接触部7dに圧力を与えながら接触する。
このように構成することで、絞り部2dと当たり部3aとに挟まれた上下方向にファンユニット4を位置決めすることができる。また、位置決め凸部7cが孔部2d-1に嵌合することから、ファンユニット4を前後方向と左右方向に位置決めすることができる。
Claims (6)
- ファンを回転させるファン装置および前記ファン装置を保持する弾性のホルダを有するファンユニットと、
筐体内の取り付け位置に配置された前記ファンユニットを両側から挟む位置にそれぞれ設けられた片部と、
前記片部のそれぞれに対応して前記ホルダの外周部に設けられた第1の弾発係合部と、
前記片部に設けられ、前記ファンユニットが前記取り付け位置に配置された状態で前記第1の弾発係合部と弾発的に係合して前記ファンユニットを前記取り付け位置に保持する第2の弾発係合部と
を備えたことを特徴とするファンユニット取り付け構造。 - 前記第1の弾発係合部は、前記ホルダの外周部から突出した第1の凸部であり、
前記第2の弾発係合部は、前記片部に設けられ、一部が前記第1の凸部の幅よりも狭く開放された切り欠き部であり、
前記第1の凸部は、前記開放された一部を経由した状態で前記切り欠き部に弾発的に嵌合することを特徴とする請求項1記載のファンユニット取り付け構造。 - 前記ホルダの外周部に設けられ、前記ファンユニットが前記取り付け位置に配置された状態で前記片部に圧力を与えながら接触する肉盛り部を備えたことを特徴とする請求項1記載のファンユニット取り付け構造。
- 前記筐体の内側に突出して設けられ、前記取り付け位置に配置された前記ファンユニットの台座となり、座面に孔部が形成された絞り部と、
前記ホルダの外周部から突出して設けられ、前記ファンユニットが前記取り付け位置に配置された状態で前記孔部に嵌合する第2の凸部と、
前記ホルダの外周における前記第2の凸部とは反対側の外周部から突出して設けられた接触部と、
天板から突出して設けられ、前記天板が前記筐体に組み付けられた状態で前記接触部に圧力を与えながら接触する当たり部と
を備えたことを特徴とする請求項1記載のファンユニット取り付け構造。 - 前記ファンの回転によって前記筐体内に出し入れされる空気の通気口は、筐体の一部が前記片部として切り曲げられたときに形成される開口部であることを特徴とする請求項1記載のファンユニット取り付け構造。
- ファンを回転させるファン装置および前記ファン装置を保持する弾性のホルダを有するファンユニットと、
前記ファンユニットが取り付けられる筐体と、
前記筐体内の取り付け位置に配置された前記ファンユニットを両側から挟む位置にそれぞれ設けられた片部と、
前記片部のそれぞれに対応して前記ホルダの外周部に設けられた第1の弾発係合部と、
前記片部に設けられ、前記ファンユニットが前記取り付け位置に配置された状態で前記第1の弾発係合部と弾発的に係合して前記ファンユニットを前記取り付け位置に保持する第2の弾発係合部と
を備えたことを特徴とする電子機器。
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DE112015006770.1T DE112015006770B4 (de) | 2015-08-04 | 2015-08-04 | Gebläseeinheitbefestigungsstruktur und elektronisches Gerät |
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