CN101105969A - Hard disk drive for vehicle - Google Patents
Hard disk drive for vehicle Download PDFInfo
- Publication number
- CN101105969A CN101105969A CNA2007101360201A CN200710136020A CN101105969A CN 101105969 A CN101105969 A CN 101105969A CN A2007101360201 A CNA2007101360201 A CN A2007101360201A CN 200710136020 A CN200710136020 A CN 200710136020A CN 101105969 A CN101105969 A CN 101105969A
- Authority
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- China
- Prior art keywords
- hard disk
- air hole
- disk drive
- vehicle
- atmospheric pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
- G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
-
- 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
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1446—Reducing contamination, e.g. by dust, debris
- G11B33/1466—Reducing contamination, e.g. by dust, debris sealing gaskets
-
- 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
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1486—Control/regulation of the pressure, e.g. the pressure inside the housing of a drive
Abstract
A hard disk drive, which is mounted on a vehicle, includes a casing, a hard disk, a magnetic head, and a sealing device. The casing has a breathing hole. The hard disk is assembled in the casing. The magnetic head is assembled in the casing. The sealing device seals the breathing hole of the casing in accordance with external atmospheric pressure.
Description
Technical field
The present invention relates to a kind of hard disk drive that is used for vehicle, it is contained in vehicle for example on the automobile, and storage for example is used to the geodata (map datum) or the music data that navigate.
Background technology
For example, auto-navigation system is carrying hard disk drive (HDD), and it can store mass data, and as being used to store the memory storage of geodata.Simultaneously, hard disk drive is also stored music data, so that can enjoy the enjoyment of car audio system.
Usually, this hard disk drive comprises hard disk, motor, arm and another motor, and they all are assembled in the thin rectangular shape box-shaped shell.A motor makes hard disk with high speed rotating.Described arm at one end has magnetic head.The described arm of another motor-driven.When reading and write data, magnetic head is set on the hard disk face of high speed rotating, floats, between magnetic head and hard disk face, have very little gap simultaneously.
Be noted that housing is suitable for obtaining sealing, enters in the housing with restriction dust and moisture.Yet, formed the little air hole with external communications in a position of housing, for example to prevent that when carrying hard disk drive by flying machine, housing ruptures because of the atm difference between enclosure interior and the outside.Air hole is arranged for also preventing that enclosure interior pressure is along with changing (increase) because of producing the hot temperature change that is caused in the hard disk use.Be noted that the filtrator that is full of hygroscopic agent is installed in the inboard of this air hole.
Described hard disk drive is assembled in such device, for example in the personal computer that adopts in family and the office.Therefore, special consideration atmospheric pressure not usually.Yet, under hard disk drive is assembled in situation in the auto-navigation system as described above,,, in the hard disk operation process, can not between hard disk face and magnetic head, form appropriate gap because atmospheric pressure is lower when vehicle during in the operation of high height above sea level (highly) area.The flying height that this means magnetic head diminishes, and can not normally carry out and read and write operation.Under even worse situation, magnetic head can contact with hard disk, rupture (alleged usually " collision (crash) ").
Therefore, in Japanese patent unexamined communique No.2004-355722 the prior art that addresses the aforementioned drawbacks is disclosed.In the disclosed prior art of this Japanese patent unexamined communique No.2004-355722, when the imaging device is used for aircraft, determine the height above sea level in place according to the positional information that detects by GPS.Simultaneously, according to the height above sea level that records, restriction is to the visit of hard disk.And, in the guider that adopts the disclosed hard disk drive of Japanese patent unexamined communique No.2004-317385, according to making the geodata (map datum) that is stored in advance in the hard disk be stored in the backing store from the positional information of gps receiver or the detection of barometric pressure sensor.When the height above sea level (atmospheric pressure) of vehicle surpasses its critical value, the visit of hard disk is restricted, and from backing store, reads geodata and show.
By two kinds of prior aries in above Japanese patent unexamined communique No.2004-355722 and Japanese patent unexamined communique No.2004-317385, describing, when height above sea level (atmospheric pressure) surpasses critical value, the visit of hard disk is restricted.Yet, although hard disk can not visit, must be from additional memory unit reading of data the storer for example.In view of this point, need for example storer of additional hardware configuration.Simultaneously, also need unnecessary process unfriendly, for example writing to additional memory unit.
Summary of the invention
Make the present invention at above defective.Thereby, the objective of the invention is to solve at least an above defective.
In order to realize purpose of the present invention, a kind of hard disk drive is proposed, it is installed on the vehicle and comprises housing, hard disk, magnetic head and packoff.Housing has air hole.Hard disk groups is contained in the housing.Magnetic head is assembled in the housing.Packoff is according to the air hole of external atmospheric pressure seal casinghousing.
Description of drawings
From following description, accessory claim and accompanying drawing, will be well understood to the present invention and other purpose thereof, feature and advantage, among the figure:
Figure 1A is the amplification longitudinal sectional view according to the major part of first embodiment of the invention, and the expression air hole is in open mode;
Figure 1B is the amplification longitudinal sectional view according to the major part of first embodiment of the invention, and the expression air hole is in sealing state;
Fig. 2 is the skeleton view of hard disk drive, the state that its top cover that is in hard disk drive is removed;
Fig. 3 is the skeleton view of the filtering element of expression back part of top cover;
Fig. 4 is the block diagram that schematically shows the electrical structure of auto-navigation system;
Fig. 5 A is the amplification longitudinal sectional view according to the major part of second embodiment of the invention, and expression is in the state that air hole is opened;
Fig. 5 B is the amplification longitudinal sectional view according to the major part of second embodiment of the invention, and expression is in the state of air hole sealing;
Fig. 6 A is the amplification longitudinal sectional view according to the major part of third embodiment of the invention, and expression is in the state that air hole is opened; And
Fig. 6 B is the amplification longitudinal sectional view according to the major part of third embodiment of the invention, and expression is in the state of air hole sealing.
Embodiment
(first embodiment)
Describe with reference to first embodiment on Figure 1A-4 pair of hard disk drive that applies the present invention to be assembled in the auto-navigation system (Vehicular navigation system).At first, Fig. 4 schematically illustrates the electrical structure of the auto-navigation system 1 that carries by vehicle (automobile).The simple general structure of describing this auto-navigation system 1.
Auto-navigation system 1 comprises Navigation Control circuit 2 and the connection device that links to each other with control circuit 2.This connection device comprises gps receiver 3, gyrosensor 4, acceleration sensor 5, vehicle speed sensor 6, Long-distance Control sensor 7, operating switch group 8, modulator-demodular unit 9, external information input/output device 10, display device 11 and hard disk drive (HDD) 12 related to the present invention.Navigation Control circuit 2 mainly comprises microcomputer (CPU), and the control total system.Simultaneously, modulator-demodular unit 9 links to each other with portable phone 13 (or car phone), and is suitable for carrying out the wireless communication that transmits center 14 with information.
Gps receiver 3, gyrosensor 4, acceleration sensor 5 and vehicle speed sensor 6 are used to detect the position of vehicle as apparatus for detecting position of vehicle.Control circuit 2 is suitable for basis from calculate the current location (longitude, latitude, height above sea level) of this vehicle with the signal high precision ground of exporting the upper sensor.In other words, control circuit 2, gps receiver 3, gyrosensor 4, acceleration sensor 5 and vehicle speed sensor 6 have been formed pick-up unit, and it detects the height above sea level of vehicle location or the external atmospheric pressure of vehicle.The structure person of being designed to be used in of operating switch group 8 makes switches set 8 carry out various operational orders.Operating switch group 8 comprises near mechanical switch that is installed in the display device 11 and the lip-deep touch sensitive panel that is arranged on display device 11.For example, display device 11 has colour liquid crystal display device, and show navigator window (geographical map display window) or various message.
And hard disk drive 12 (hard disk) is being stored geographical data (map datum), the various programs of carrying out navigation feature, content, user's data or the like.For example, geodata comprises the road-map-data on Japanese whole land and the facility data of having.Simultaneously, geodata is included in the data that produce mileage chart on the screen of display device 11 again.Control circuit 2 adopts software configuration to carry out navigation feature, for example positioning function or source guiding function.By positioning function, the current location of this vehicle (and direct of travel) superposes to be presented on the display device 11 with mileage chart.Guiding (root guidance) function in source is calculated automatically and is led to the recommendation travel path that the user specifies the arrival destination, and is led in described path.
Hereinafter with reference to Figure 1A-3, the structure of hard disk drive 12 according to the present invention is elaborated.Hard disk drive 12 has hard disk 16 (disc), spindle motor 17, magnetic head 18, arm 19, voice coil motor 20 and controller, and they all are assembled in the metal shell 15 of thin rectangular shape box shape shown in Figure 2.Spindle motor 17 makes hard disk 16 with high speed rotating.Magnetic head 18 reads and writes the data in the hard disk 16.Arm 19 drives magnetic head 18.Voice coil motor 20 transfer arms 19.
Simultaneously, as Figure 1A, shown in the 1B and 3, filtering element 23 is being set on the circular arc zone that comprises air hole 22 on the top cover 15b rear side (downside).Filtering element 23 comprises hygroscopic agent, activated charcoal for example, thus prevent that dust and moisture from entering in the housing 15.
As shown in Figure 1, diaphragm element in the present embodiment (diaphragm) 24 is arranged on air hole 22 inboards (inner face side of top cover 15b) of housing 15.Diaphragm element 24 plays the effect of packoff, is used for according to outside atmospheric pressure sealing air hole 22.Diaphragm element 24 is made by for example rubber, plastics and metal material, can diastrophic disc-shape to have.In this case, formed the cavity 23a that does not exist filtering element 23 in air hole 22 inside.Diaphragm element 24 is arranged on cavity 23a place (with the position of the inner face of top cover 15b (promptly) spaced slightly), and wherein the neighboring of diaphragm element 24 is supported.Usually, the boundary between the air hole 22 of the neighboring of diaphragm element 24 and housing 15 forms very little hole (gap).Aperture (gap) limit air flows out or flows into housing 15, and the size of aperture (gap) is designed such that diaphragm element 24 is because of inside and the bending of the pressure differential between the outside and the distortion of housing 15.
Diaphragm element 24 becomes have outstanding downwards curved shape shown in Figure 1A, with under normal condition (for example the pressure on the top surface of diaphragm element 24 applies greater than 0.7atm) open air hole 22.On the contrary, shown in Figure 1B, when external atmospheric pressure drops to predetermined value (for example when the pressure on the top surface that is applied to diaphragm element 24 become when being equal to or less than 0.7atm), diaphragm element 24 elasticity (resilience) flexural deformation to project upwards.Therefore, diaphragm element 24 closely contacts with sealing air hole 22 with the inner face (peripheral part of air hole 22) of top cover 15b.When external atmospheric pressure is got back to original pressure (for example when the above-mentioned pressure that is applied to top surface greater than 0.7atm time), diaphragm element 24 is got back to original state (for example above-mentioned normal condition).
Hereinafter the action to above structure is described.Hard disk drive 12 according to the present invention is assembled in the vehicle (automobile) as the part of auto-navigation system 1.When vehicle when for example travel in the area, lowland on the level land with higher relatively atmospheric pressure (approximately 1atm), diaphragm element 24 has curved shape outstanding shown in Figure 1A downwards, to open the air hole 22 that is formed on the housing 15.Therefore, when producing difference between the atmospheric pressure in external atmospheric pressure and the housing 15, air flows out or inflow housing 15 by air hole 22.Thereby, eliminated the inside of housing 15 and the pressure differential between the outside.
By contrast, when vehicle in the area of high height above sea level (highly) (for example being equal to or greater than the height above sea level of 3000m) for example during traveling on mountainous region, atmospheric pressure diminish (for example being equal to or less than 0.7atm).For this reason, when hard disk drive 12 is operated, can not between the face of hard disk 16 and magnetic head 18, form appropriate gap under external atmospheric pressure equals the comparison example state of the inner atmosphere pressure in the housing 15.Thereby the flying height of magnetic head 18 can diminish, and can not normally carry out and read and write.Under even worse situation, magnetic head 18 forms with hard disk 16 unfriendly and contacts, thereby causes fracture (alleged " collision " usually).
Yet different with the state of above comparison example, in the present embodiment, diaphragm element 24 is arranged on the inside of air hole 22.Therefore, when external atmospheric pressure is reduced to when being equal to or less than predetermined value (for example, when the pressure on the top surface side that is applied to diaphragm element 24 becomes when being equal to or less than 0.7atm), diaphragm element 24 flexural deformation shown in Figure 1B is with sealing air hole 22.For this point, the pressure in the housing 15 can keep constant (pressure is greater than 0.7atm), and can not be subjected to the influence of external atmospheric pressure, because the outflow (inflow) of air by air hole 22 is restricted.
In other words, for example carry in the process of hard disk drive 12, prevent between the inside of housing 15 and outside, to produce pressure differential at aircraft.Simultaneously, prevent that the internal pressure in the housing 15 from changing (increase) because of the life of parts in the use is hot.
Thereby even external atmospheric pressure reduces (just hard disk drive 12 is used in high elevational position), the pressure in the housing 15 can not diminish thus yet.Therefore, can between the face of hard disk 16 and magnetic head 18, form (maintenance) appropriate gap, make it possible to access hard disk 16.In other words, in the high altitude localities, can use hard disk drive 12 similarly with normal condition (area, lowland).Be noted that when external atmospheric pressure is got back to original pressure, we can say that diaphragm element 24 gets back to the state shown in Figure 1A to open air hole 22 from dynamic deformation.
Thereby the hard disk drive 12 of this embodiment comprises such diaphragm element 24, and it makes we can say when external atmospheric pressure and drop to when being equal to or less than predetermined value that the air hole 22 that is formed on the housing 15 obtains from motive seal (shutoff).Thereby hard disk drive 12 of the present invention is different from conventional hard disk drive part and is: in conventional hard disk drive, when being used for high altitude localities (area of low atmospheric pressure), stoped the visit to hard disk.When the hard disk drive 12 of this embodiment is used for the high altitude localities, can guarantee (reliable formation) face of hard disk 16 and the appropriate gap between the magnetic head 18.Therefore, when preventing to destroy hard disk 16, can access hard disk 16.
In this case, do not need conventional additional backing store.Simultaneously, packoff has physical construction.Therefore, hard disk drive 12 has simple structure, and makes cheap.In the present embodiment, packoff comprises diaphragm element 24, and it becomes when being equal to or less than predetermined value at external atmospheric pressure, elasticity (resilience) flexural deformation with sealing (shutoff) air hole 22.Therefore, we can say that air hole 22 drops to when being equal to or less than predetermined value at external atmospheric pressure, air hole 22 obtains from motive seal.Simultaneously, air hole 22 is suitable for opening automatically when ambient pressure is got back to original pressure.Present embodiment can form above structure at an easy rate by simple structure.
(second embodiment)
Fig. 5 represents second embodiment of the present invention.Fig. 6 represents the 3rd embodiment of the present invention.Be noted that in second embodiment, the present invention also is applied to hard disk drive, it is assembled in the auto-navigation system and stores geodata.The structure of packoff that is used for sealing the air hole 22 of (shutoff) second embodiment is different from first embodiment.Thereby, represent by identical Reference numeral with the similar similar parts of first embodiment.Save diagram again and detailed description, thereby hereinafter only describe distinctive points similar parts.
In second embodiment shown in Figure 5, be mounted (setting) cavity 23a at the filtering element 23 of air hole 22 inside of housing 15 (inner face side of top cover 15b) as a bag element 31 that is used for according to the packoff of external atmospheric pressure sealing air hole 22.For example, bag element 31 is made by for example material such as plastic sheeting or rubber.Bag element 31 is formed has thin circular bag shape, and is suitable for expanding and can get back to its original shape after dilatational strain.For example have that the gas of 1atm pressure (for example air) is filled in bag element 31 inside, and a bag element 31 obtains tight seal.
In addition, in the present embodiment, the hot member 32 of life that is used for heating bag element 31 (for example heating inner air) is arranged on the lower face side of bag element 31 (for example being arranged on an opposite side of bag element 31 and outer opposite).Give birth to hot member 32 and produce heat by energising, and as heating arrangement.When Navigation Control circuit 2 according to from the input of for example gps receiver 3 when the height above sea level (highly) of the position (this vehicle location) of vehicle is equal to or greater than critical value (for example 3000m), Navigation Control circuit 2 is to hard disk drive 12 output electrical instruction signals, so that give birth to hot member 32 energisings.When becoming after the height above sea level of this vehicle location when being equal to or less than critical value, Navigation Control circuit 2 is suitable for to hard disk drive 12 output cut-offing instruction signals, so that give birth to hot member 32 outages.Controller in hard disk drive 12 is suitable for energising and the outage that the electrical instruction signal that receives according to these and cut-offing instruction signal controlling are given birth to hot member 32.
For this reason, bag element 31 is the stock size shown in Fig. 5 A (state that shrinks relatively) under normal condition.In other words, normal condition is that the height above sea level of this vehicle location does not reach critical value (external atmospheric pressure is approximately 1atm) and gives birth to the yet state of heating bag element 31 not of hot member 32.At this moment, the end face of bag element 31 is oriented to down to separate with the inner face of top cover 15b, and air hole 22 is opened.
By contrast, when the height above sea level of this vehicle location becomes when being equal to or greater than critical value (for example 3000m), come heating bag element 31 by giving birth to hot member 32.Simultaneously, external atmospheric pressure significantly descends (for example being equal to or less than 0.7 atmospheric pressure) with respect to internal pressure, and therefore shown in Fig. 5 B, bag element 31 expands and upwards distortion.The summit portion of bag element 31 closely contacts with sealing air hole 22 with the inner face (peripheral part of air hole 22) of top cover 15b.Be noted that when the height above sea level of this vehicle reduced, bag element 31 was got back to the state shown in initial position and Fig. 5 A, and give birth to hot member 32 outages.
In above second embodiment, be arranged on the hard disk drive 12 as the bag element 31 of packoff with as the hot member 32 of the life of heating arrangement.Described thus, similar with first embodiment, when hard disk drive 12 is used for the high altitude localities, can guarantee between the face of hard disk 16 and magnetic head 18, to form appropriate gap.Thereby, when preventing to destroy hard disk 16, can also access hard disk 16.
In the present embodiment, especially, when the height above sea level of this vehicle location is detected when being equal to or higher than predetermined value, by giving birth to the gas in the hot member 32 heating bag elements 31.Subsequently, we can say that bag element 31 is forced to dilatational strain, make air hole 22 obtain sealing.Thereby when external atmospheric pressure reduced, air hole 22 can obtain positiver sealing.Simultaneously, according to the detection of apparatus for detecting position of vehicle, can determine the height above sea level of this vehicle location.Therefore, need not to be provided with the height above sea level of direct this vehicle location of detection or the sensor of external atmospheric pressure.Like this, can simplified structure.
Be noted that the improvement as second embodiment, the inside and the pressure differential between the outside of housing 15 can be used as the driving force that makes bag element 31 expand and be out of shape alternatively, and need not to adopt living hot member 32.When the dilatational strain of bag element 31 by the driving force of pressure differential seals air hole 22 reliably, need not to be provided with apparatus for detecting position of vehicle and heating arrangement.Simplified the structure of the hard disk drive of second embodiment of the invention distortion like this.
(the 3rd embodiment)
Fig. 6 represents the 3rd embodiment of the present invention.Be noted that in the 3rd embodiment, the present invention also is applied to hard disk drive, it is assembled in the auto-navigation system and stores geodata.The structure of packoff that is used for sealing the air hole 22 of (shutoff) the 3rd embodiment is different from first embodiment.Thereby, represent by identical Reference numeral with the similar similar parts of first embodiment.Save diagram again and detailed description, thereby hereinafter only describe distinctive points similar parts.
In the 3rd embodiment of the present invention shown in Fig. 6 A, the 6B, seal the cap member 33 of air hole 22 as packoff and according to external atmospheric pressure, be set at air hole 22 inside (for example being arranged on the inner face of top cover 15b) in the housing 15.Cap member 33 is made by sheet metal.Cap member 33 be arranged to can be between open position and sealing station, in Fig. 6 to the right and the inner face displacement slidably of direction upper edge top cover 15b left.Open position be as shown in Figure 6A, the position of opening air hole 22.Sealing station is the position that is used for shown in Fig. 6 B, seals the following side of air hole 22.
Simultaneously, shown in Fig. 6 A, 6B, be provided for making the actuating device 34 of cap member 33 slide displacement between open position and sealing station.This actuating device 34 comprises for example solenoid or piezoelectric member.In normal condition, cap member 33 is positioned at open position.When Navigation Control circuit 2 according to from the input of gps receiver 3 grades when the height above sea level (highly) of this vehicle location is equal to or greater than critical value (for example 3000m), Navigation Control circuit 2 is to hard disk drive 12 output displacement command signals, so that cap member 33 moves to sealing station.Afterwards, when the height above sea level of this vehicle location became less than critical value, Navigation Control circuit 2 was suitable for exporting the link order signal, so that cap member 33 returns.Displacement commands signal and link order signal that controller in the hard disk drive 12 is suitable for receiving according to these are controlled actuating device 34.
In the 3rd embodiment, be provided with cap member 33 and the actuating device 34 that is used to drive cap member 33 as packoff.Thereby, similar with first and second embodiments, when being used for the high altitude localities, can guarantee between the face of hard disk 16 and magnetic head 18, to form appropriate gap.Like this, when preventing to destroy hard disk 16, can access hard disk 16.In addition, air hole 22 can be opened or seal reliably.Simultaneously, can simplify the structure that is used for this purpose (reliably opening and sealing of air hole 22) relatively.
Be noted that in above each embodiment the present invention is applied to be assembled in the hard disk drive on the auto-navigation system (Vehicular navigation system) 1.Yet the present invention can be applied to be assembled in the device that is used for storing music data on the automobile audio system.The position that is used to be provided with the air hole 22 of housing 15 can change in several ways.In addition, the critical value (height above sea level of 3000m, atmospheric pressure are 0.7atm) that is used to seal air hole described above only is an example.
Those skilled in the art are easy to expect additional advantage and modification.Therefore, the present invention is not limited to detail in its broad aspect, representative device and shown in and described illustrative examples.
Claims (7)
1. hard disk drive that is installed on the vehicle comprises:
Housing (15) with air hole (22);
Be assembled in the hard disk (16) in the housing (15);
Be assembled in the magnetic head (18) in the housing (15); And
Packoff (24,31,33), it comes the air hole (22) of seal casinghousing (15) according to external atmospheric pressure.
2. hard disk drive as claimed in claim 1 is characterized in that:
Described packoff (24) comprises the diaphragm element (24) that is arranged on air hole (22) inside; And
When external atmospheric pressure is reduced to when being equal to or less than predetermined value, described diaphragm element (24) elastic bending and distortion are with sealing air hole (22).
3. hard disk drive as claimed in claim 1 is characterized in that:
Described packoff (31) comprises the bag element (31) that is arranged on air hole (22) inside;
Described bag element (31) is made by soft material, and has and be filled in a bag element (31) gas inside, and
Described bag element (31) expands according to the reduction of external atmospheric pressure and is out of shape, with sealing air hole (22).
4. hard disk drive as claimed in claim 3 is characterized in that also comprising:
Be used to detect the height above sea level of vehicle location or vehicle external atmospheric pressure pick-up unit (2-6) and
Heating arrangement (32), wherein when described pick-up unit (2-6) detects height above sea level and is equal to or higher than critical value, perhaps when described pick-up unit (2-6) detects external atmospheric pressure and is equal to or less than critical value, described heating arrangement (32) heating bag element (31) is used to force a bag element (31) to expand and distortion.
5. hard disk drive as claimed in claim 1 is characterized in that, described packoff (33) comprises the cap member (33) that is used to open and seal air hole (22), and described hard disk drive also comprises:
Be used to detect the pick-up unit (2-6) of the external atmospheric pressure of the height above sea level of vehicle location or vehicle; And
Actuating device (34), wherein when pick-up unit (2-6) detects height above sea level and is equal to or higher than critical value, perhaps when pick-up unit (2-6) detected external atmospheric pressure and is equal to or less than critical value, described actuating device (34) activation lid element (33) was with sealing air hole (22).
6. hard disk drive as claimed in claim 4 is characterized in that:
Described pick-up unit (2-6) comprises the apparatus for detecting position of vehicle (3-6) that is used to detect vehicle location; And
Described pick-up unit (2-6) is according to the height above sea level that is detected vehicle location by the detected vehicle location of apparatus for detecting position of vehicle (3-6).
7. hard disk drive as claimed in claim 5 is characterized in that:
Described pick-up unit (2-6) comprises the apparatus for detecting position of vehicle (3-6) that is used to detect vehicle location, and
Described pick-up unit (2-6) is according to the height above sea level that is detected vehicle location by the detected vehicle location of apparatus for detecting position of vehicle (3-6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP194202/2006 | 2006-07-14 | ||
| JP2006194202A JP2008021388A (en) | 2006-07-14 | 2006-07-14 | Vehicle mounted hard disk device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101105969A true CN101105969A (en) | 2008-01-16 |
| CN101105969B CN101105969B (en) | 2010-06-02 |
Family
ID=38948157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101360201A Expired - Fee Related CN101105969B (en) | 2006-07-14 | 2007-07-10 | Hard disk drive for vehicle |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20080011641A1 (en) |
| JP (1) | JP2008021388A (en) |
| CN (1) | CN101105969B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935632A (en) * | 2013-01-22 | 2014-07-23 | 株式会社迪思科 | Packaging material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170038117A1 (en) * | 2015-08-03 | 2017-02-09 | Michael D. Newman | Pulsed liquid-gas entrained cryogen flow generator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4177763B2 (en) * | 2004-01-19 | 2008-11-05 | 株式会社東芝 | Disk unit |
-
2006
- 2006-07-14 JP JP2006194202A patent/JP2008021388A/en active Pending
-
2007
- 2007-06-28 US US11/819,551 patent/US20080011641A1/en not_active Abandoned
- 2007-07-10 CN CN2007101360201A patent/CN101105969B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935632A (en) * | 2013-01-22 | 2014-07-23 | 株式会社迪思科 | Packaging material |
| CN103935632B (en) * | 2013-01-22 | 2017-09-29 | 株式会社迪思科 | Packaging material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101105969B (en) | 2010-06-02 |
| JP2008021388A (en) | 2008-01-31 |
| US20080011641A1 (en) | 2008-01-17 |
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