CN2563621Y - Magnetic disc driver - Google Patents

Abstract

The utility model discloses a magnetic disc driver which comprises a base structure and a cover body structure. The base structure consists of a base part and a first circuit board, wherein a spindle motor is arranged on the base part, and the base part is also provided with a first opening where the first printed circuit board can be inserted. The cover body structure consists of a cover and a second printed circuit board, wherein the cover is provided with a second opening where the second printed circuit board can be inserted. After the base structure and the cover body structure are assembled into a whole, the magnetic disc driver has a total thickness of 5.0mm and also meets general standards of II type standard model memory card set by the Personal Computer Memory Card International Association.

Description

Disk drive

[technical field]

The utility model is about a kind of disk drive, refers in particular to a kind of disk drive that is used to replace the storage card on the personal computer and can be suitable for the memory card standards of the special requirement that PCMCIA (personal computer memory card international association) formulates.

[technical background]

Integrated circuit card generally becomes the device of hand held especially, the on knee and convenient extended storage capacity of notebook computer, also be used for other coupling arrangement, facsimile recorder, ROM device and other similar device as modulator-demodular unit, parallel port, miniature phone.Be compatibility, physical property, interface and the software standard that promotes these storage cards, the PCMCIA (personal computer memory card international association) and the Japanese Electronic Industries Development Association of the U.S. have worked out unified standard.

General PCMCIA (personal computer memory card international association) is published the memory card standards of the 2.01 versions formulation of issue in November, 1992, difference according to three kinds of physical sizes is divided into model I, model II and model III, and the maximum ga(u)ge that its difference mainly is a storage card is respectively 3.3mm, 5.0mm and 10.5mm.One end of these storage cards is the connector with 68 splicing ears, typically can slip into the side of card by a pair of guide groove guiding.

Above-mentioned model II maximum ga(u)ge is the card of 5.0mm, is that a small-sized disk drive of 1.8 inches replaces by diameter probably, for example replaces the storage card of a solid, provides the abundant big memory capacity of one 100 megabyte to be increased to main frame.Therefore, having this benefit for making this disk drive, must make it that suitable thickness is arranged, is 5.0mm as making its highest thickness, with corresponding with the card physical property of model II type.

Fig. 1 discloses existing disk drive 10 three-dimensional exploded views, and its base body 100 comprises wood side-guide 101,102, and this base body 100 preferably adopts aluminium to make, and also available plastics or other metal are made.One printed circuit board (PCB) 108 and a shield assemblies 109 are installed on this base body 100, and this shield assemblies 109 comprises that a static releasing layer 109B and is bonded in the insulation course 109A on this static releasing layer 109B.Pin 110A on the connector 105 can electrically be bonded to the corresponding pin 110B of circuit board 108.One is installed in above the disk by stamping forming aluminium lid 111, and actuating device or other assembly are installed on the base body 100 with four screw (not shown).Base body 100, printed circuit board (PCB) 108 and shield assemblies 109 are locked on the base body 100 by screw 102 and are assembled together.

The side cutaway view of existing disk drive as shown in Figure 2, a Spindle Motor 200 are installed in the slit 114 of base body 100.Spindle Motor 200 comprises a spindle 201, these spindle 201 outstanding slits 108 of passing on slit 114 and the printed circuit board (PCB) 108.The a pair of data disk 202 of bonding on the spindle 201, these two data disks 202 all are positioned at the upper side of base body 100.Printed circuit board (PCB) 108 is directly arranged under the base body 100, is equipped with on it as representational electronic package 203A, 203B and 203C.Printed circuit board (PCB) 108 and the electronic package that comprises electronic package 203A, 203B and 203C above it place below the shield assemblies 109 and above the base body 100.

As implied above and described Spindle Motor passes the slit on the printed circuit board (PCB) 108, this printed circuit board (PCB) 108 has the total corresponding with base body 100, and this printed circuit board (PCB) 108 and its are gone up electronic package 203A, the 203B and the 203C that bond and be positioned at lid 111 and base body 100 formed external shells.

The disk drive of existing this type as shown in Figure 1 can be designed to its integral thickness and be no more than 10.5mm, matches with the personal computer memory card of model III type.For obtaining the disk drive that integral thickness is a this special card type structure of 5.0mm or the foregoing model II that is no more than 5.0mm, be the problem that the utility model institute desire solves.

[summary of the invention]

The purpose of this utility model is to provide a kind of integral thickness maximum to be no more than 5.0mm, can with the corresponding disk drive of standard card structure of the model II of personal computer memory card association type.

The utility model disk drive, comprise a complete base construction of forming by a base portion and a first circuit board, the one complete cover body structure of forming by a lid and one second printed circuit board (PCB), one Spindle Motor is installed on the base portion of this base construction, this base portion is provided with one first opening, can be embedded this first printed circuit board (PCB) in this first opening, this lid is provided with one second opening, be embedded this second printed circuit board (PCB) in this second opening, after this disk drive assembling, its integral thickness is 5.0mm, and can reach the storing card thickness standard of the II type standard model of PCMCIA (personal computer memory card international association).

Advantage of the present utility model is: adopt in conjunction with loam cake and a printed circuit board (PCB) together cover body structure and by base portion and another printed circuit board (PCB) assembling base construction assembling formation disk drive together, its integral thickness reduces, can reach the storing card thickness standard of the II type standard model of PCMCIA (personal computer memory card international association), and it uses less number of spare parts, can improve the thickness and the intensity of whole device.

[description of drawings]

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the three-dimensional exploded view of the international border of current version III type individual counter storage card association disk drive.

Fig. 2 is the side cutaway view of disk drive among Fig. 1.

Fig. 3 is the three-dimensional exploded view of the utility model disk drive.

Fig. 4 is the plan view of the utility model disk drive.

Fig. 5 is the cut-open view of Fig. 4 along the 5A-5C line.

Fig. 6 is the cut-open view of Fig. 4 along the 6-6 line.

Fig. 6 A is the cut-open view the same with Fig. 6, and only its slide rail overlaps and links together.

Fig. 7 is the three-dimensional exploded view of the utility model disk drive second embodiment.

Fig. 8 is the cutaway view Amplified image of disk drive shown in Figure 7.

Fig. 9 is the cut-open view of the utility model disk drive the 3rd embodiment.

[embodiment]

As Fig. 3 to the utility model disk drive 300 shown in Figure 6, its base construction 302 is made up of the printed circuit board (PCB) 306 that a base portion 304 and is installed on this base portion 304, this base portion 302 preferably is formed from aluminium, also available plastics or steel are made, and this printed circuit board (PCB) 306 can adopt bonding or other to be fixed on the base portion 304 as similar device for fastening such as screw, rivet, anchor clamps.Printed circuit board (PCB) 306 is made up of a plate body 307 and a plurality of integrated circuit 322 of being installed on this plate body 307.Base portion 304 is provided with a port 308, and printed circuit board (PCB) 306 can be installed on the base portion 304 by this port 308, thereby the two constitutes a complete base construction 302.

One flexible circuit 309 is connected with printed circuit board (PCB) 306.

The base portion 304 of base construction 302 is provided with a slit, can install a Spindle Motor 312 in this slit.This Spindle Motor 312 comprises a rotary spindle hub 314, and data storage disk 316 can be fitted on this spindle hub 314.Base portion 304 also is provided with a slit 318, similarly installs the cylinder 320 that an actuator bearing 321 is installed by bonding, extruding, screw, rivet, anchor clamps etc. in this slit 318.All be installed in a side (display circuit is located at the plate body bottom side among the figure) of plate body 307 as a plurality of integrated circuit 322 such as interface control figure circuit, little processing digital circuits.

This disk drive 300 also comprises one by the cover body structure 324 of screw (figure does not show) device on base construction 302, and this cover body structure 324 is made of a lid 326 and a printed circuit board (PCB) 328.This printed circuit board (PCB) 328 comprises a plate body 329 and a plurality of integrated circuit 332 that is located on this plate body 329.Printed circuit board (PCB) 328 just in time with lid 326 on a port 330 match and be fixed on this lid 326, and can make printed circuit board (PCB) 328 and lid 326 be assembled into a complete cover body structure 324 by bonding.All be arranged on a side (being upside as shown in the figure) of plate body 328 as all integrated circuit 332 such as read/write circuits.

This disk drive 300 comprises and can be respectively installed to upper and lower insulation shield assemblies 338,340 on this cover body structure 324 and the base construction 302 by the screw (not shown) that insulation shield assemblies 338,340 can be improved the screening effect of the electromagnetic interference (EMI) of disk drive.These insulation shield assemblies 338,340 can also magnetic be permeated to cover magnetic and electromagnetic interference (EMI).The size of each printed circuit board (PCB) 328,306 and shape that is to say that by the suitable not scanning space decision of actuating device the installation of mechanical component is decided by that the structure of printed circuit board (PCB) can match with aforementioned corresponding base construction and cover body structure.

The best as shown in Figure 6, printed circuit board (PCB) 306,328 combines with the orbit portion 371,37 3 of track 375 respectively, each track 375 is provided with a lengthwise opening 377, and when disk drive 300 was in confined state, an edge of disk 316 can stretch in this opening 377.This kind structure can reduce the thickness of whole device compared to aforementioned structure, and wherein disk is positioned on the set track of base construction one side.

Structure changes to some extent compared to track structure shown in Figure 6 shown in Fig. 6 A, and wherein a track 381 combines with printed circuit board (PCB) 306, a track 383 combines with printed circuit board (PCB) 328.And the track structure of symmetry shown in Figure 6 can provide relatively directly electromagnetic interference (EMI) injection path, and the labyrinth type track structure shown in Fig. 6 A can reduce the injection of electromagnetic interference (EMI).

Please refer to shown in Fig. 5 C, base construction 302 (comprising the base portion 304 and the printed circuit board (PCB) 306 that are inlaid in together) and cover body structure 324 (comprising the lid 326 and the printed circuit board (PCB) 328 that are inlaid in together) are installed together, shield assemblies 338, the 340 corresponding position of packing into, thus be assembled into the one-piece construction that an integral thickness can be reduced to 5.0mm (as size X).In addition, all integrated circuit on each printed circuit board (PCB) all are in the device outside of relative disk and actuating device, and the inner space sealing one that base construction and cover body structure limited is so that compatible mutually with ten grades of fast disc head devices of inside.

Printed circuit board (PCB) 328 also comprises a connector 336, this connector 336 can be used for disk drive 300 on assembly set up suitable being electrically connected, pass the suitable channel 325 that is provided on the baseplate part 304 by flexible circuit 323 as the connector on the printed circuit board (PCB) 306 331 and be connected with connector 336.

By in conjunction with a loam cake and a printed circuit board (PCB), baseplate part and the assembling of another printed circuit board (PCB) are together, can reduce the quantity of part, thereby reduce the thickness and the mechanical tolerance of whole device, and can pile up as the space tolerance (each is all in margin tolerance) of a plurality of parts, can reduce the quantity of accumulation with less part, therefore the tolerance of single part can increase, and with less part, each part can make thicker, thereby the thickness of whole device and intensity can improve.

Another embodiment disk drive 400 as shown in Figure 7 and Figure 8, establish a slit 427 on the loam cake 426, the part of the spindle 414 of Spindle Motor 412 extends in this slit 427, thus promoted the height of motor, thus the stack size of motor 412 can be increased to 40%.This kind variation also can improve the bearing attitude of motor, can strengthen the resonance of motor.Simultaneously, lid surface 429 usefulness are covered 431 basal surface and are sealed in the appropriate location.

As mentioned above, disk drive adopts the base construction of integrated formation and the cover body structure of integrated formation, can obtain to comprise that the gross thickness of the whole device of shield assemblies is 5.0mm.Therefore, can obtain the II type standard model memory card standards that computer memory card international association formulates, use, greatly improve the memory storage capacity so that this disk drive can be worked as a memory card.Expect that certainly integrated base construction and integrated cover body structure can be selected a use, only obtain to compare the thin disk drive of prior art.

Fig. 9 discloses the 3rd embodiment of disk drive, and wherein disk 500 has side-play amount compared to previous embodiment, so that printed circuit board (PCB) 502 1 sides are as shown in the figure used higher encapsulation, directly installing is onboard or do not have an electronic installation and opposite side is with chip.

Be appreciated that ground, the utility model also can be used for multiple-disk organization.

Claims (8)

1. disk drive, it comprises a base construction, one cover body structure and one is installed in the Spindle Motor on the base construction, this base construction comprises a base portion and one first printed circuit board (PCB), this first printed circuit board (PCB) has one first side and second side relative with first side, this cover body structure comprises a lid and one second printed circuit board (PCB), this second printed circuit board (PCB) also has one first side and second side relative with first side, it is characterized in that: this base portion is provided with one first opening, and second side of first printed circuit board (PCB) is installed on the base portion and covers on first opening; This lid is provided with one second opening, and second side of second printed circuit board (PCB) is installed on the lid and covers on second opening; Cover body structure and base construction device and form an internal chamber together, and Spindle Motor is contained in this chamber.

2. disk drive as claimed in claim 1 is characterized in that: the described base portion and first printed circuit board (PCB) bond together.

3. disk drive as claimed in claim 1 is characterized in that: the described lid and second printed circuit board (PCB) bond together.

4. disk drive as claimed in claim 1 is characterized in that: the integral thickness of described disk drive is 5.0mm.

5. disk drive as claimed in claim 1 is characterized in that: described Spindle Motor is installed on the base portion.

6. disk drive as claimed in claim 1 is characterized in that: can install at least one disk on the described Spindle Motor, these disks can rotate around rotation motor in chamber.

7. disk drive as claimed in claim 1 is characterized in that: described first printed circuit board (PCB) only is equipped with assembly in its first side.

8. disk drive as claimed in claim 1 is characterized in that: described second printed circuit board (PCB) only is equipped with assembly in its first side.

Images