JPH02161682A - Disk device - Google Patents

Abstract

PURPOSE:To reduce the size of a control circuit board and to obtain a degree of freedom in the arrangement of the board by forming structure such that a connector for interfacing with host equipment and a connector for power source supply are separated from the control circuit board, and they are arranged by overlapping in the thickness direction of a floppy disk device(FDD). CONSTITUTION:Connector parts 140 are mounted at an end part on an opposite side to the front panel 120 of the FDD. The connector part 140 consists of an I/O connector 141 for interfacing with the host equipment and is connected to a main control circuit, and a power connector 142 for power source. At such a case, both connectors 141 and 142 are separated from a main control circuit board 400, and also, are superposed in two stages and arranged in the thickness direction of the FDD. Accordingly, the size of the control circuit board can be reduced, and the degree of freedom can be obtained in its arrangement.

Description

[Detailed description of the invention]

[Industrial Application Field 1] The present invention relates to a disk device that records or reproduces information on or from a disk by rotating a disk as a recording medium. [Prior Art 1] A typical example of this type of device is a floppy disk device (hereinafter referred to as ``FDD'') which magnetically records or reproduces information on a magnetic disk of a flexible disk-shaped magnetic recording medium called a floppy disk. )
There is. In an FDD, a magnetic disk is inserted and ejected, the magnetic disk is rotated by a motor, and a magnetic head slides into contact with the magnetic disk to record.
It is now ready for playback. In the structure of FDD, F
A disk insertion and ejection mechanism that inserts and ejects a magnetic disk, a disk rotation drive mechanism that rotates the magnetic disk with a motor, and a magnetic head that rotates the magnetic disk along the radial direction are mounted on the hess that supports each component of the DD. A head seek mechanism for moving the magnetic head to a desired track position, and a head loading mechanism for loading and unloading the magnetic head onto and from the disk are provided. In addition to this, F, D
A main control circuit board with a control circuit for controlling the entire D, a motor control circuit board with a drive control circuit for the disk drive motor, a connector for interface with the host device, a connector for power supply, etc. provided. Such FDDs are used as external storage devices for host electronic devices such as personal computers and word processors, and can be configured as independent devices, but in many cases they are built into the main body of the host electronic device. It has become. In recent years, electronic devices in which FDDs are incorporated have become smaller and more portable, and in response to this, FDs
There is a strong demand for D to be smaller, thinner, and lighter. [Problems to be Solved by the Invention] Incidentally, a main control circuit board provided with a control circuit for controlling the entire FDD in the FDD occupies a large space. Conventionally, the main control circuit board is provided with a host device interface connector and a power supply connector, which are normally provided at the rear end of the FDD, so that the main control circuit board is provided at the rear side of the FDD. Such limitations on the size and arrangement of the main control circuit board are an obstacle to reducing the size, thickness, and weight of FDDs. Therefore, the problem of the present invention is i? The object of the present invention is to solve the above-mentioned problems not only in DD but also in disk devices, and to make disk devices smaller, thinner, and lighter. [Means for Solving the Problems] In order to solve the problems described above, the present invention provides a method for interfacing with a host device in a disk device that records or reproduces information by rotating a disk as a recording medium. The connector and the power supply connector are separated from the control circuit board and placed one on top of the other in the thickness direction of the disk device. [Function] According to this structure, both connectors are connected to the control circuit board. By separating the control circuit board from the control circuit board, the size of the control circuit board can be reduced and flexibility can be obtained regarding its arrangement. Furthermore, by stacking both connectors, the space occupied by both connectors can be made compact. [Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. In this embodiment, for the sake of convenience, a floppy disk drive device (hereinafter referred to as FDD) which is incorporated into an electronic device such as a computer or a word processor for recording and reproducing information will be explained. The FDD of the present invention is formed as a small and thin housing as shown in FIGS. 1(A) to 1(D). The reference numeral 100 in the figure is a base that supports the constituent members of the disk device, and has a U-shaped cross section with an open top.
It is made of metal or the like, and in this embodiment, this base forms the bottom surface of the FDD, and all of the various constituent members are housed between this base and a shield cover as a lid described later. FIG. 1(C) shows the back side of the FDD, and the bottom mounting portions 101 for attaching to host equipment such as computers and word processors are provided at three locations on the rectangular back surface as through holes for screw fixing. It is formed. At these three bottom mounting points, cutout portions 102 are formed at the rectangular positions on the sleeves to provide a relief for mounting. In other words, the number of attachment points, which were conventionally provided at four locations, has been reduced to three, and the remaining one attachment location is formed as a recess. The base 100 is cut and raised in various shapes in order to attach each component of the disk device, and this will be explained each time as necessary. The base 100 has a round notch near its center, into which a stator yoke 111 made of a magnetic material such as an iron plate provided on the lower surface of a motor 110 of a disk drive motor to be described later is fitted and fixed flush with the base 100. 6 In particular, as shown in FIG. 3(B) and FIG. 4(A) to (D), the stator yoke is flush with the base and the lower surface of the base.
A PCB (printed circuit board) 300 provided with a DD motor drive control circuit (not shown) is superimposed on the upper surface of the motor. To reduce the thickness of FDD, DD motor 1 on PCB
The portion facing the rotor 115 of No. 10 is cut out as an opening 300a, so that the I)D motor is exposed. As is clear from the figure, rotor 1 of PCB300
For example, six coils 112 for exciting the DD motor are arranged at equal angular intervals on the stator yoke 111 within an opening 300a cut out facing the coils 15, and the internal wiring of the coils is F.
The coil terminal connection pattern 112a formed on the coil side of the G jli P CB is connected, for example, by soldering, and the coil 112 and the motor drive control circuit on the PCB 300 are connected by connecting the coil terminal directly to the PCB 300.
It is connected to 0. Connect the coil terminal (coil terminal) of the coil 112 to the PCB 3 without using a separate lead wire or the like.
By connecting directly to the motor drive control circuit on the 00, costs and space can be reduced. moreover,
Two Hall elements 113 are placed between the coils 112 to detect the excitation switching timing of the coils. The terminal portion of the Hall element 113 is connected to the PCB 300.
The detection part is connected to the rotor magnet 11.
The opening 3 protrudes from the PCB 300 so as to face the opening 3
It is located within 00a. The DD motor 110 has a stator yoke 111 fixed integrally with a base ioo at the bottom, and a housing tiib accommodating a bearing], l 1 a is fixed to this stator yoke.
A spindle shaft 114 of the D motor is supported, and a rotor yoke 115 is fixed to the upper part of the spindle shaft 114. A magnet 115a is fixed to the back side of the rotor yoke 115, and the coil 11
It is arranged to face 2. In addition, Fig. 4 (D
FG (Frequency Generator 2
g) A pattern 1i2b is provided, and a solder plate 1 is also provided between this FG pattern and the driving circuit board 300.
The wires are connected by screws, etc. On the front side of the base 100 in the figure is a disk cassette 150.
A front panel 120 having an insertion/ejection [1] is attached, and connects both side surfaces 100a, 100a of the U-shaped profile of the base 100 on one side to form the front surface of the casing. Furthermore, as shown in FIGS. 5(A) and 5(B), a shutter 122 is attached to the inside of the front panel 120 to close the cassette insertion/ejection port 121 when not in use to prevent foreign matter such as dust from entering. There is. This shutter is rotatably supported on a bearing provided on the -F side of the cassette insertion/ejection port 121 by a portion 124, and furthermore, the cassette insertion/ejection is always carried out via a weak coil spring 125 as a first elastic member. It is given the habit of rotating downwards to close the exit. Therefore, when no external force is applied, this shutter always hangs downward and closes the cassette insertion/ejection port 121. A brake spring (handling spring) 1 as a second elastic member is provided above the shutter 122.
23 is fixed at one end to the inside of the front panel 120. The brake rib 123 is made of a material with a relatively large elastic modulus and is bent downward in the shape shown in the figure. When the cassette is attached and the cassette guide described below is pressed downward, The bent tip does not reach the shutter 122, but comes into contact with the shutter 122 only when loading and unloading the cassette, and biases the shutter 122 in the closing direction. The elastic modulus of this brake spring is selected to provide a stronger spring than the coil spring 125. Next, Fig. 6, Fig. 7 (A) to (C), Fig. 8 (A), (
The disk attachment/detachment and head loading mechanism will be explained using B). In the FDDQ arrangement of this embodiment, disk cassette 1
50, the disk is chucked and the magnetic head is loaded, and when the eject button is operated, the magnetic head is unloaded and the disc cassette 1- is ejected. In the figure, a disk cassette (hereinafter abbreviated as cassette) 150 is inserted and ejected through the disc cassette 1 and insertion/ejection port 121 formed on the front panel 120 attached to the front end of the base 100 (front 11 in the figure). . On the inside of the base 100, which has a cross-section in the shape of an opening, a 11-director (not shown entirely by the reference numeral 160) is provided. In addition, the base 1dol has a slide plate 162 that is guided by a plurality of bent parts 100m protruding from predetermined positions of the base, and is arranged so that the base [-] can be slid in the A and Bh directions. A notch 162B is formed in a part of play 1-162, and this notch 16
2a, one end of the tension coil spring 162b is fixed to the base 100, and the other end of the tension coil spring 162b is attached to the slide plate L-162. As will be described later, the slide plate 162 is held in a predetermined position on the base 100 via the above-mentioned bent portion 100m provided on the base by tension, and the slide plate 1
62, which can be slid in the direction toward the bezel 100 against the bias of the tension coil spring 162b by pressing the operation button (eject button) IO2 integrally attached to the front end in the figure. , as shown in FIGS. 8(A) and (13), the slide plate 1B2
Indoor groove 1 is provided on guide plate 162d vertically provided on both sides of
It is formed by notching 62e. This guide groove 1 B
As is clear from the figure, the outer end of 2e is the base 100.
It is parallel to , and descends obliquely from there to form τ. Similarly, FIGS. 8(A) and 8(B) show the cassette guide 152.
The side surface of the cassette guide 152 is shown (see also FIG. 3(A)).The cassette guide 152 accommodates and guides the cassette 150, and its shape is a thin housing that fits inside the base 100 as a whole. The lower surface is notched over almost the entire area so that the cross section is almost mouth-shaped. Guide grooves 162e formed in the guide plates 162d of the slide plate 162 on both sides of the cassette guide 152
A dowel 152a is provided to protrude outwardly at a position where the dowel 152a is engaged with the dowel 152a. Furthermore, dowels 52b are protruded from the center of both sides of the cassette guide 152.
It is fitted into guide grooves 1000 formed on both side surfaces 100a, 100a of the base 100. An ejector 160 is attached near the rear end of the slide plate 162. That is, an ejector spring 164 is elastically loaded on the shaft 160a that supports the ejector 160 on the opposite side of the front panel 120 side of the base 100 (near the end of Ill). One end of the ejector spring 164 is locked to the ejector 160, and the other end is housed in a spring receiver formed on the side surface 100a of the base 100. The ejector 160 is given a rotational behavior in the counterclockwise direction in the figure. In particular, as is clear from FIGS. A cassette shutter opening and pushing arm 160d is provided at 160c.The base side end surface of the arc-shaped base 160b is connected to the base side surface 100.
a to regulate the standby position of the ejector 160. A protruding latch portion 162c is formed at the end of the slide plate 162 on the ejector 160 side. As shown in FIG. 7(A), this latch portion 162c is caught on the base portion 160b of the ejector 160 in the standby position, thereby causing the base 100 and the slide plate 162 to
The slide plate 162 is maintained in the latched state against the bias in the direction B of the tension coil spring 162b stretched between the two. When the ejector 160 is moved to the operating position by the cassette 150 as shown in FIG. Slide in the direction. Next, the head seek mechanism will be explained. 6. As shown in Figures 9 and 10. The front panel 12 of two bases 100
On the side opposite to 0, there is a 1
In the state where γ is raised, the rear wall 1 (10b) is formed on the body. T1.B formed on this rear wall i oob.
; A pair of Suflifs directly connected to the output shaft of Subing Tanabata 130. - Insert the shaft 1:31 and screw shaft 13
The end of the motor 130 side of 1 is supported by a sliding bearing 135, and the tip of the screw shaft 131 is supported by a pivot bearing lOOd provided on a support plate 100f4, which is cut and raised a predetermined distance from the rear wall 100b of the base. In this state, the recording/reproducing head assembly 20 (described later)
A stepping motor 130 that drives 0 is attached. As shown in FIG. 9, a spiral screw groove 131a is formed in the screw shaft 131 of the stepping motor.
On the other hand, a needle bin 202 protruding from the head assembly 200 is engaged. Further, the screw shaft 131
In the vicinity of the sliding bearing 135, the slurry 1-shaft 131 is 91. The head assembly 200, which has a washer 132 to prevent lubricating grease or foreign matter from entering the base, is attached to the base as shown in FIGS. 1 and 11. A sliding bearing 134 attached to a part of the head carriage is attached to a guide pawl 133 installed between the rear wall 100b of the head 100 and a supporter 100e cut and raised from a bene.

[Base 1oo-i can be moved back and forth
It is set in the second. . The head assembly 200 is provided with a head carriage 201a having a helad arm 201, and a +iii slide bearing 13 is provided on one side of the head carriage 201a.
4 is attached, and a needle bin 202 is provided on the other side, and this needle bin 202 is connected to the screw groove 13 of the screw shaft 131 of the stepping motor 130.
1Fl is engaged. With this structure, the screw shaft 131 is rotated by the driving of the stepping motor 130, the needle bin 202 is pressed through the screw groove 131a, and the six-head carriage 201a, which reciprocates the head assembly 200, has a zero surface on the lower side. A magnetic head for one side is fixed, and a magnetic head for one side is supported on the upper side via a helad arm 201. A head arm 201 having a single-sided head can approach and move away from the disk, and via a damper mechanism or solenoid mechanism described below, the single-sided head softly lands on the disk to record or reproduce information on the disk. I do. First, Figure 12, Figure 13 (A), (B) (C) and 1
4(A) and (B) illustrate the damper mechanism 170. The damper mechanism 170 consists of a damper 171 and a damper arm 172, and is attached to the base 100 via a damper attachment 173. Remove the damper;
The first plate 173 is bent by the hook, and the base 10
It is screwed to the bottom of the 0. Damper installation is on board 1
From the rear wall side of the base 73 to the support shaft 174 parallel to the base side wall
is provided protrudingly, and the damper arm 1 is attached to this support shaft 174.
72 is rotatably supported on a bearing. A coil spring 175 is wound around the support shaft 174, and one end of the coil spring 175 is supported on the side wall of the base of the plate 173 for mounting the damper.
The other end is supported by the damper arm 172, giving the damper arm 172 the habit of constantly rotating toward the bottom surface of the base 100. A bent portion 172a protruding from the damper arm 172 is fitted into a notch formed in the rotary piece 171a of the damper 171, whereby the damper arm 172 and the damper 171 are interlocked. The damper arm 172 also has first and second pivots 176 and 177.
is provided, and the first pivot 176 is an arm 176 that protrudes from the center of the damper arm toward the disk.
The second pivot 177 is attached to the tip of the damper arm 172 toward the base. The first pivot l-176 prevents the upward movement of the cassette guide 152 from the damper arm 1.
72, and the second pivot 177 comes into contact with the bottom surface of the base 100 and serves as a stopper below the damper arm. And both pivots 176.177
The positional relationship between the first pivot 176 and the cassette guide 1 is such that when no cassette is inserted into the disk drive, the first pivot 176 is
52, and when the cassette is inserted and mounted, the second pivot 177 comes into contact with the bottom surface of the base 100, so that the first pivot 176 is lifted from the top surface of the cassette guide 152 by the gap G. This gap G is provided so that when the cassette is inserted and the head is in contact with the disk, the damper arm 172 is reliably separated from the head arm 201 without receiving any external force, and the head arm 15 and 16 (A), (B) and (C) show solenoid assemblies, and It is used as an alternative to the assembly.The choice of whether to use the tambour mechanism or the solenoid mechanism is determined by the system of the host equipment to which the FDD is installed. Using
The head is loaded onto the disk with the cassette attached, and the disk is rotated only when reading or writing. Furthermore, when a solenoid mechanism is used, the disk is constantly rotated when the power is turned on, and the spatula 1 is loaded onto the disk by energizing the solenoid only during read/write operations. The solenoid mechanism 180 includes a solenoid 181, a plunger 182 that is attracted by the excitation of the solenoid, and
It consists of a head load arm 183, and the solenoid is screwed to the base 100 via a plate 184. For installing the solenoid, the U-shaped support part 1 is attached to the root 184.
84a is provided to protrude, and this support portion 184
A support shaft 184b is supported on the support shaft 184b. A herad load arm 183 is rotatably supported on the support shaft [84b, and a coil spring 184c is further wound around it. One end of the coil spring I 84c is locked to the U-shaped support portion 184a, and the other end is locked to the Herad load arm 183.
This gives the head load arm 1.83 a clockwise rotational habit in the figure. The side of the plunger 182 opposite to the main body of the solenoid 181 protrudes toward the head assembly through a through hole (not shown) formed in the plate 184. By attaching the E-ring 189, the amount of protrusion of the plunger 182 from the main body of the solenoid 181 is regulated. Further, a plunger return spring 185 is mounted between the E-ring 189 and the solenoid, and applies a biasing force to the plunger in the direction of the head assembly. In addition, noise damping rubber 186 is attached to the solenoid attachment Fi, l 84 side of the E-ring of the plunger 182 and inside the outer end of the plunger to buffer the impact caused by the movement of the plunger and reduce the noise caused by the impact. ing. Further, a first pivot 187a is provided at the tip of the head load arm 183, and when a disk cassette is not inserted into the FDD, this pivot 187a abuts against the upper surface of the cassette guide 152, thereby causing the head load. The arm 183 is a coil spring 184
Push -L to the position shown in Fig. 16(A) against the bias of c.
I'm getting lost. At this time, the lid 204 of the RAD arm 201 is supported by the RAD load arm 183 on one side of the head carriage, and the RAD arm 201 is supported on the other side at the non-use position shown in the figure. Furthermore, a second pivot 187b is provided at a portion of the head load arm 183 that comes into contact with the plunger 182. When a disk cassette is inserted into the FDD, the cassette guide is lowered by the aforementioned cassette mounting mechanism,
When the first pivot 187a is released from the upper surface of the cassette guide, the head load arm 183 is rotated clockwise in the figure by the biasing force of the coil spring l84c, and the second pivot 187b is moved out of the plunger. By abutting the head load arm 183
is held in the position shown in FIG. 16(B). When the second pivot 187b comes into contact with the plunger, the first pivot 187a is in a position where it does not come into contact with the cassette guide. Therefore, in this position, the helad arm 201 has the lifter 204 supported by the head load arm 183, so that the head 205 is supported at a standby position at a predetermined distance from the disk IO. From this state, when the solenoid 181 is energized and the plunger 182 is attracted in the direction of the arrow in FIG. 16(C),
The head load arm 183 is further rotated clockwise in the figure by the biasing force of the coil spring 184C, and as shown in FIG.
It occupies the position shown in C). In this position, the Herad load arm 183 is separated from the Herad arm 201, and the one-sided head 205 provided on the head arm 201 comes into contact with the disk io. Next, the circuit board will be explained. As shown in FIG.
A PCB 400, which is the main control circuit board, is attached to the second part. In addition, as already explained at the beginning using FIGS. 3 and 4, the top surface of the base 100 has a plug for the DD motor.
CB300 is arranged. In other words, in the conventional FDD, the PCB for the DD motor and the Ulj
In this embodiment, the main PCB is placed on the base 100 with various constituent members in between.
It is placed directly opposite the PCB 300 for the D motor. As shown in FIG. 2, one side wall 100a of the base 100
There is a support notch 100 that supports the main PCB 400.
a' is formed in two places, and the same < PCB is formed on the other side wall.
One notch 100a' supporting 400 is formed,
Furthermore, a support part 100 for screwing the PCB 400
a” is formed by, for example, being cut and raised.
Engagement protrusions 400a are formed at positions corresponding to the notches 100a' in the side wall of the base of the CB400. A through hole for screwing, for example, is formed at a position corresponding to the support portion 100a. With this configuration, when the PCB 400 is assembled into an FDD, the engagement protrusion 400a of the PCB 400 is fitted into the notch 100a' of the base side wall, and the PCB 400 is connected to the support part 100a'' of the base side wall through the through hole. Then, tighten the screws with screws 405. Only one place is to be screwed. Then, as shown in FIGS. This shield cover has a rectangular plate shape, and the projecting edges 502 formed on both sides are connected to the side wall 100 of the base 100.
side wall 1 to the hole 502a of the protruding side 502.
It is attached to the base 100 by engaging the protrusion 1 oop formed on the base 100a and engaging the front panel 120 with an engaging part (not shown). At this time, each of the protrusions 400a of P] 3400 is pressed by a claw-shaped PCB holding part 501 formed at a position corresponding to the notch 100a' in the shield cover 500. In this way, the main control board PCB 400 is engaged within the side wall of the base 100, and the shield cover 50
0 holds the PCB 400 on the base. Furthermore, by attaching the shield cover and the base in this way, the shield cover can function as a reinforcing member to prevent distortion of the base. DD for
PCB300 for the motor and PCB that is the main control circuit board
400 is placed directly opposite the base ioo on the same side. Further, at least one pair of a light emitting element and a light receiving element constituting a transmission type optical sensor is arranged on both circuit boards so as to directly face each other. That is, for example, as shown in FIG. 3(B), a circuit board 300 for a DD motor includes a light emitting element or a light receiving element 401 which constitutes a sensor for cassette/1 detection, and a sensor for detecting write protection. Light emitting element or light receiving element 4
As shown in FIG. 2(A), the main control circuit board 400 is provided with a sensor element 401 for detecting the cassette 11Ti and a sensor element 402 for the write protection 1-. A light receiving or light emitting element 401' of the cassette detection sensor and a light receiving or light emitting element 402' of the light product detection sensor are attached. Furthermore, as shown in FIGS. 2, 3, and 17,
A connector portion I40 is provided at the end of the FDD device opposite to the front panel 120. The connector section 140 includes an I10 connector 141 for interfacing with a host device and connected to the main control circuit, and a power connector 142 for power supply. In this embodiment, both connectors 141 and 142 are separated from the main control circuit board 400 and arranged in two layers in the thickness direction of the FDD. A connector 141 is placed at the bottom, and the PCB l
Although the power connectors 142 installed in the PCB 42a are arranged in two stages, the vertical arrangement may be reversed.A flexible printed circuit board (re-pull) 143a is installed between the PCBs 141a and 142a. The PCB l 42a and the main control circuit board 400 are also connected by a flexible printed circuit board 1.43b. i5, I10 connector 141
Although a large number of ground terminals are installed in the board, since these ground terminals are connected together into one common lead wire pattern and pulled out, the number of cables on the flexible printed circuit board 143b is reduced. Here, too, space-saving efforts are being made. . Disk device (F'DI) consisting of the above configuration
When it is taken as an example of an electronic device such as a computer or a word processor, it is shown in FIG. 1(c). l: Sea urchin FD
The bottom mounting formed in three places on the back of the base of D is part i.
For example, one screw is screwed into the electronic device via 01. J: The FDD is fixed to the electronic device with three points of support because it is fixed at only three of the four points forming the rectangle, and the remaining one is cut out. Therefore, even if there is a 1-dimensional error in the FDD fixing part on the electronic equipment side and a difference in height, stress that distorts the base 100 will be applied to the base 100.
Prevents distortion 11: Can be done. Next, the operation of the FDD of this embodiment configured as above will be explained. Turn on the power of the electronic device having the FDD installed as described above, and then insert the disk cassette 1 through the cassette insertion/ejection port 121 of the front panel 120 of the FDD.
50 into the cassette guide 152 of the FDD. , 2, the cassette 150 is braked via the shutter 122 which is biased by the coil spring 125 and the brake spring 123, but this does not pose a problem since the manual pushing force is strong when inserting the cassette 1-1, 50. . When the cassette 150 is inserted into the FDD, the cassette detection sensor elements 401, 401' and (
Or) the write protect sensor element 402 402' of the cassette 150 is activated and the cassette t□ l 50
Insert the cassette and/or manually send a signal to the host device to see if the cassette is write-protected. When the cassette 150 is piloted in the direction shown in FIG. 160d, and opens the shutter of this cassette and pushes out the arm l6.
0d is pushed upward in the figure against the bias of the ejector spring 164 and rotated counterclockwise. At this time, the cassette printer i 50 b is moved to the left in the figure by the shutter release of the force cell [-] and the push-out arm 160 d.
- Since the cassette is pushed all the way, the shutter of the cassette 1- is opened at the same time as the cassette is inserted, exposing the disc 1. Also, the cassette 150 reaches the position shown in FIG. When the shutter opening and ejecting arm l60d reaches the position where it moves downward from the front end of the cassette 1, the arcuate base 160 of the ejector 160
b does not come out from the latch portion 162c of the slide plate 162. Then, the engagement between the SQUID B1 NO)-162 and the RGE TA 160 is disengaged, and the slide plate 162 is disengaged.
is caused by the tension of the tension coil spring 162b []
Slide towards the note. Cassette 1 containing cassette 150 - guide 152
Dowels 152a formed overhanging on both sides are slur r1! Since it is engaged with the guide grooves 162e of the guide plates 162d on both sides of the plate 162, the slab f dob 1-1-162 is pulled in the direction 13 in the figure, and when L
, jξ1. T, ``;
T-rollers 15 are provided in the center of both sides of the cassette guide.
2 b is b,! , 1000 both sides 100 El, 10
Guide groove 1 (-') Ot
・Since the cassette guide 152 is engaged with A in the figure. It cannot move in direction B. In addition, F, Ride Brake
The guide groove 162e of the guide plate 162d of -162 is shown in FIGS. 8(A) and (■3) and has already been explained! 1. As shown in the figure, when the slide play 1-162 is stretched by the elasticity of the tension coil spring 162b, it is guided by the guide groove 162e and forced to move in one direction. 1) The case where a damper mechanism is provided as the U-impact mechanism of the head assembly will be explained. 2 As already explained, the damper 17+ is provided with damper arms 172 - (6 damper arms 172, 3- damper arms 1
．． 72 is the support shaft 174;
754 When it is stiff, it moves towards the left side, but the tip of the damper arm \172 (the first pivot provided facing downward) - 176 or the top surface of the cassette guide 152 Supported by 1-2,
Cassette 1 - Masu kesa to the genuine top 5 ~ (71'l transfer IpJj
The cassette device's mouth, which is regulated only
i = r :j, ``y 1'' Doble t-162 moves, and then 4-) na-) force Sera 1-Guide 1
52 is base X 00jj direction 8. '' movement), the damper 1-m 172, which was on the L side G of the cassette 1-guide 152, is moved downward by the bias of the coil spring 175. is filled with oil, and due to the oil resistance, the damper, -
Arm 172 slowly descends. When the head arm 201 of the head assembly 200, whose lifter 204 was not supported by the tamper arm 172, moves to the damper arm 172i, the lead is lowered, and the head 205 on the first side is 1'. Isk 10-L hesof 1-Run~P ing, 0 side head 20 (K and 1 side head 20)
The disk 10 is held between the disk 5 and the disk 2. In this state, the disk 10 is rotated during read/write. As already mentioned! The damper arm 177 is provided with a second pivot 177 as shown in FIG.
2 is lowered, this second pivot 177 moves to the base 10.
The damper arm 172 is prevented from moving downward by contacting the two surfaces of the damper arm 172. In this state, as shown in FIG. 13(B), the head arm 2
01 between the glue lid 204 and the damper arm 172 f,
: is set to one in which a predetermined V Yap is made J1a. Next, let's discuss the case where the solenoid mechanism is staged as a shock absorbing mechanism for the head assembly. Kase! - Slide Buttoneau by inserting 150) 1
When the latch part 162e of G2 disengages from the engagement with the lid 160, the latch l/-1-16 is pulled by the elasticity of the spring 1-21). Pull it to the front panel side.
62ac dowel I 52 a +: Through -CIE, the cassette guide 152 moves downward. Sowabanko J: This skein/sol 1-guide l 52 top surface 6
．． The downward movement of the maid 181 was restricted due to the fact that the pivot 187a was in the up position.
; The mouth/door arm 183 is rotated in the clockwise direction B in FIG. 16(A) by the biasing force of the coil arm 84c. Then, the second pivot 187b of the solenoid 181 comes into contact with the outer end of the plunger, thereby restricting the rotation of the head load arm 183.
is held at the standby position shown in FIG. 16(B). In this position, the first pivot 187a occupies a position that is a predetermined distance from the upper surface of the cassette guide 152, and at the same time, the one-sided head 205 of the head arm 201, which has the lifter 204 supported by the head load arm 183, It is waiting at a predetermined distance from the IO. When using a solenoid, the disk is usually rotated immediately after the power of the host device to which the FDD is installed is turned on. Next, the solenoid L81 is energized, and as shown in FIG.
), the plunger 182 is attracted against the bias of the plunger return spring 185, and the coil spring 184C
The head load arm 183 further rotates clockwise due to the urging force. Then, head load arm 183
The head arm 201, which was supported by
A one-sided head 205 contacts the disk 10. In this state, the desired read/write of information is performed. When the power to the solenoid 181 is cut off, the plunger 182 returns to the first position due to the bias of the plunger return spring 185.
6, the one-sided head 205 is returned to the standby position shown in FIG. 6(B) and separated from the disk 10. Note that, as already described, the head assembly 200 is slidably housed in the guide bar 133 that is supported on the base 100 via the sliding bearing 134 that is attached to a part of the head carriage 201a, and is attached to the head assembly. The provided needle bin 202 is connected to the screw shaft 131 of the stepping motor 130.
Since it is engaged with the groove 131a, it is moved by the driving of the stepping motor 130. m air head 20 due to movement of head assembly 200
The position control of 5.206 is performed in a known manner and will not be described here. After information is read and written to the disk as described above, when the disk is ejected, when the push button 1 to button 161 provided on the front of the FDD is pushed in, the slide plate 162 pulls and releases the input of the coil spring 162b. 4
It slides in six directions from the position shown in FIG. 7(B) against the force. thereby ejecting the slide plate 162] - the latch portion 16 formed at the end opposite to the button 161;
2C is separated from the rear part of the arcuate base 160b of the ejector 160, and the arm portion 160c of the ejector 160 is rotated counterclockwise by the bias of the ejector spring 164 and moved to the ejection position shown in FIG. 7(A). do. At this time, the cassette pushing and shutter opening arm 16 provided at the tip of the arm portion 160c of the ejector 160 and keeping the shutter 150b of the cassette 150 in the open position
The counterclockwise rotation of 0d pushes the cassette 150 toward the front panel 120. At this time,
As the arm portion 160c of the ejector 160 pushes out the cassette and the shutter opening arm 160d rotates, the shutter 150b of the cassette 150, which gradually escapes from the restriction of the arm 160d, is moved in the closing direction by a spring mechanism (not shown). Therefore, the cassette 150 has a shutter 15.
It is discharged from FDD with 0b closed. At this time, the movement of the cassette 150 is reliably braked with a strong braking force via the shutter 122 biased by the brake spring 123 and the coil spring 125 inside the front panel 120 of the FDD, so that the cassette pops out and falls off. It will not cause any damage. When the bookmark set 150 is installed, only the coil spring 125 acts on the shutter 122, and no large load is applied to the cassette 150. [Effects of the Invention] As is clear from the above description, according to the present invention, in a disk device that records or reproduces information by rotating a disk as a recording medium, a connector for an interface with a host mechanism and a power supply are provided. We have adopted a structure in which the supply connector is separated from the control circuit board and placed one over the other in the thickness direction of the disk drive, which allows us to reduce the size of the control circuit board and provides flexibility in its placement. The space occupied by both connectors can be made compact, and the disk device can be made smaller, thinner, and lighter.

[Brief explanation of the drawing]

FIG. 1 and subsequent figures explain the structure of FDD according to an embodiment of the present invention, and FIGS. 1(A) and 1(B). (C) and (D) are a front view, side view, bottom view, and front view showing the overall appearance of the FDD, respectively, and Figure 2 (A) is the FDD shown in Figure 1 with the shield cover removed. 2(B) is a front view of the same state, and FIG. 3(A) shows the shield cover of the FDD and the main control circuit 1. A plan view with the hair plate removed. Figure 3 (I3) is a plan view showing how the DD Chi-Yu is installed, Figure 3 (C) is a side view, Figure 3 (D) is a front view, and Figure 4 (A) is the DD motor installed. 4(B) is a side sectional view showing the condition, FIG. 4(B) is a perspective view of the main parts showing the arrangement of the coil and Hall element of the DI) motor, and FIG. 4(C) is a plan view of the DI) motor. Figure (D) 4;
A), (1'3) are explanatory diagrams showing the action of the brake spring and coil spring, Fig. 6 is a plan view showing the assembled state of the slide plate and ejector, and Fig. 7 (A), (B), (
C) is an explanatory diagram showing the operation of the ejector, and FIG. 8(A) (
B) is an explanatory diagram showing the operation of the cassette guide, Fig. 9 is an explanatory diagram showing the installed state of the stepping motor, and 1st O
The figure is an explanatory diagram showing the assembled state of the head assembly.
Figure 11 is a configuration diagram of the Heradoa assembly, Figures 12~
FIG. 14 is for explaining the damper mechanism, FIG. 12 is an explanatory diagram showing the state in which the damper mechanism is attached, and FIG. 13 (A). (B) and (C) are explanatory diagrams showing the installation state of the damper mechanism, Figures 14 (A) and (B) are explanatory diagrams showing the operation of the damper, and Figures 15 and 16 are illustrations of the solenoid mechanism. Figure 15 is a configuration diagram of the solenoid mechanism and Figure 16 is a diagram for explaining the solenoid mechanism.
FIGS. 17A, 17B, and 17C are explanatory views showing the operation of the solenoid, and FIGS. 17A to 17C are explanatory views showing the arrangement of the connectors. 100...Base 100a...-Side ゛100
a'...-notch 100a''~...support part 100b
...Rear wall 101-...Bottom mounting is part 102.
・・Notch 110・−DD motor 111・・Stator yoke 112・−Coil 113・・−Hall element 114
...Spindle shaft 115...Rotor yoke 115a...Magnet 120...Front panel] 21...-Cassette insertion/ejection port 122...Shutter 123...Brake spring 130...Stepping motor 131--・Screw shaft 132・-・Washer 13
3...Guide bar 140...-Connector part 141
... 10 connector 141a=-PCB 142--Power connector 142 a-=P
CB143a, 143b=-Flexible PCB300
...-Motor PCB 400--Main PCB 401--Sensor element for cassette detection 402...Write protection detection sensor → No element 500...Shield power bar 170g Figure 12

Claims (1)

[Claims] 1) In a disk device that records or reproduces information by rotating a disk as a recording medium, the connector for interface with the host device and the connector for power supply are separated from the control circuit board and installed in the thickness direction of the disk device. A disk device characterized by being arranged one on top of the other.