JP3498376B2 - Magnetic disk drive - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible magnetic disk device, and more particularly to a structure of a flexible magnetic disk device casing accompanying improvement of a spindle motor.

[0002]

2. Description of the Related Art FIG. 10 is a perspective view showing the appearance of a conventional flexible magnetic disk device, and FIG. 11 is an exploded perspective view thereof.
FIG. 12 is a front view and a back view of the flexible magnetic disk device with the panel removed.

In these drawings, 101 is a flexible magnetic disk device, 102 is a front surface of the flexible magnetic disk device 101, and an opening 10 is provided for inserting and ejecting a flexible magnetic disk (not shown).
2 is a panel having 2a, 103 is a cover of the flexible magnetic disk device 101, and 104 is a display unit provided on the panel 102, which is composed of an LED 104a electrically connected to a base 109c described later (see FIG. 12).
Reference numeral 105 denotes a holder, which has a substantially L-shaped cross section, and is provided with a mounting portion 105a for mounting on a bottom plate portion 108a of a frame 108, which will be described later, and a mounting portion 105b for mounting on a computer main body on the system side. ing.

Reference numeral 106 denotes a disk moving mechanism, 106a a holder for detachably holding a flexible magnetic disk, and 106b for moving the flexible magnetic disk in the loading or unloading direction while engaging with the holder 106a to record the flexible magnetic disk. , 106c is a spring for urging the guide portion 106b in the loading direction, 106d is a lever provided on the upper surface of the holder 106a, and is used for loading the flexible magnetic disk. At the time, one end is used as a fulcrum to move backward in an arc, and at the same time, the cover of the flexible magnetic disk is opened to expose the recording medium. At the time of unloading, the flexible magnetic disk is moved based on the bias of the spring 106e. Opening 1 Discharged to the 2a side.

Reference numeral 106f is a lever that restricts the movement of the guide portion 106b so that the holder 106a is held at the unload position, and 106g is a spring that biases the lever 106f. Disk is lever 106f
Is rotated against the biasing force of the spring 106g, and the guide portion 10
6b is released and the flexible magnetic disk is placed at the disk load position. Reference numeral 106h denotes a switch portion that is attached to the guide portion 106b through the panel 102. When pressed, the guide portion 106b is moved to the regulating position of the lever 106f to unload the flexible magnetic disk. 106i is a holder 106a
A lifter portion provided near the rear of the upper surface of the carriage mechanism portion 107, which will be described later, and before the flexible magnetic disk is inserted, a lifter receiving portion (not shown) provided on the arm portion 107c of the carriage mechanism portion 107. No.) and a sufficient space for inserting the flexible magnetic disk is held, and when the holder 106a moves due to the loading of the flexible magnetic disk, the arm portion 107c is guided so that the flexible magnetic disk is at the head loading position. When it reaches, it separates from the lifter receiving part.

Reference numeral 107 denotes a carriage mechanism section for seeking the heads 107b and 107d in a direction orthogonal to the rotating direction of the flexible magnetic disk, 107a denotes a base carriage, and 107c has an arm provided with a head 107d at a position facing the head 107b. Part, 107e is arm part 1
A spring biasing 07c is for applying pressure to the recording medium to bring the heads 107b and 107d into an appropriate contact state when the flexible magnetic disk reaches the head loading position. 107f is a carriage 107a
Is a stepping motor for moving the flexible magnetic disk in a direction orthogonal to the rotating direction of the flexible magnetic disk, and 107g is a sub-frame for mounting members such as the stepping motor 107f.

Reference numeral 108 denotes a frame for accommodating and mounting each mechanism portion, 108a denotes a bottom plate portion of the frame 108,
Reference numeral 108b denotes a motor opening for inserting a hub 109a, which will be described later, 108c to 108f denote support portions for positioning and supporting the flexible magnetic disk at a disk loading position,
Reference numeral 109 is a radial gap type motor with a core for rotating a recording medium, and 109a is a rotating shaft 1 penetrating a bearing (not shown).
A hub having a chucking portion for holding a recording medium is mounted on 09b, and 109c is a base to which a rotor yoke 109d of the motor 109 is fixed and which has a substrate on which electrical wiring is processed. Reference numeral 110 denotes a substrate portion of the flexible magnetic disk device 101, which is a bus line 110.
It is connected to the base 109c by a. 110b
Is a track sensor for detecting the outermost periphery (00 track) of the track of the recording medium, and 110c is a connector for connecting to the main body of the personal computer.

The operation of the conventional flexible magnetic disk device configured as described above will be described. When the flexible magnetic disk is inserted through the opening 102a, the holder 106a of the disk moving mechanism 106 holds the flexible magnetic disk, and the guide 106b moves in the loading direction together with the holder 106a to guide the disk to the disk loading position. On the other hand, the cover of the flexible magnetic disk is opened by the lever 106d, and the flexible magnetic disk is positioned and supported by the supporting portions 108c to 108f. At this time, the head 10 of the carriage mechanism unit 107
7b and 107d contact the recording medium, respectively. Here, when a signal for recording, reproducing, or erasing is input from the personal computer or the like on the system side, the motor 109 rotates the recording medium and the carriage mechanism 107 causes the head 107 to rotate.
b, 107d are sought to a predetermined track to perform recording, reproduction, erasing, etc. When the switch portion 106h is pressed to take out the flexible magnetic disk, the guide portion 106b moves in the unloading direction together with the holder 106a. At this time, the lever 106d moves the spring 10
The flexible magnetic disk is pushed out toward the opening 102a by the bias of 6e.

[0009]

Recently, the motor for driving the recording medium used in the flexible magnetic disk drive has the hub 109a and the rotor yoke 10 as described above.
There are a radial gap type motor 109 with a core in which 9d and a base 109c are arranged to face each other, and a hub and a rotor yoke are arranged on the base. In this type of motor, the hub and the rotor yoke rotate around a bearing fixed to the base.
In addition, since a motor opening having substantially the same diameter as the rotor yoke is required, there is a problem that the rigidity of the frame 108 decreases.

Further, since the holders 105 are separately attached to the frame 108, if there is an error in the attachment dimensions during assembly, the outer dimensions of the flexible magnetic disk device 101, especially the width, will be described. Since the dimensions are too large, it takes a lot of work to perform the dimensioning, and there are many variations.

Further, as described above, in a flexible magnetic disk device using a frame having a large motor opening, the frame is liable to be bent by an external force applied to the holder 105 when the frame is mounted on a personal computer body, and the characteristics of the motor are deteriorated. was there.

Further, there is a problem that the characteristics of the spindle motor are deteriorated when there is vibration or impact from the personal computer body.

Furthermore, in order to reduce the cost and reduce the weight, a paper substrate is used as the substrate unit 110 as one of the means, but the paper substrate is weak in strength and easily broken, so that the personal computer main body is used. There was a problem of bending and cracking when electrically connecting with.

Conventionally, the prevention of vibration of a spindle motor is disclosed in Japanese Utility Model Laid-Open No. 3-45253, but this relates to protection of the entire apparatus by vibration from the spindle motor, and protection against vibration from the outside. Was not done.

The present invention has been made in order to solve the above problems. Even if a large hole is formed in the frame, the rigidity of the frame is not reduced, and the width dimension of the device can be made accurate. An object of the present invention is to provide a magnetic disk device that does not have a bad influence on a motor even when subjected to vibration or the like and is not damaged even when a paper substrate is used.

[0016]

(1) In a magnetic disk device according to the present invention, a flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted, and other equipment main bodies are electrically connected. In the magnetic disk device, there is a base plate part having a connecting part for electrically connecting to the base plate, a motor opening part into which a rotor yoke of a spindle motor is inserted, and a frame arranged above the base part and the base plate part. And a bottom plate portion having side plate portions formed to face both ends of the bottom plate portion in a direction orthogonal to the longitudinal direction, and mounting portions respectively formed on the side plate portions for mounting to other device main bodies. Provide a holder attached to the frame so that is located under the base and the board part,
The side plate portion is composed of a protrusion piece extending inward, and is provided with a frame support portion that abuts and supports the bottom portion of the frame.

(2) In the magnetic disk device according to the present invention, a flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted and another device body are electrically connected. In a magnetic disk device having a board portion having a connecting portion, a motor opening into which a rotor yoke of a spindle motor is inserted, and a frame arranged above the base and the substrate portion, a bottom plate portion and a bottom plate portion of the bottom plate portion are provided. It has side plate portions formed at both ends in a direction orthogonal to the longitudinal direction so as to face each other, and mounting portions formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is a base and a substrate portion. A holder attached to the frame is provided so as to be located below, and the bottom plate portion is provided with an elastic member on a surface facing the base.

(3) In the magnetic disk device according to the present invention, a flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted and another device body are electrically connected. In a magnetic disk device having a board portion having a connecting portion, a motor opening into which a rotor yoke of a spindle motor is inserted, and a frame arranged above the base and the substrate portion, a bottom plate portion and a bottom plate portion of the bottom plate portion are provided. It has side plate portions formed at both ends in a direction orthogonal to the longitudinal direction so as to face each other, and mounting portions formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is a base and a substrate portion. A holder attached to the frame is provided so as to be located below, and the bottom plate portion is provided with a base support portion that supports the base from below.

(4) In the magnetic disk device according to the present invention, a flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted and another device body are electrically connected. In a magnetic disk device having a board portion having a connecting portion, a motor opening into which a rotor yoke of a spindle motor is inserted, and a frame arranged above the base and the substrate portion, a bottom plate portion and a bottom plate portion of the bottom plate portion are provided. It has side plate portions formed at both ends in a direction orthogonal to the longitudinal direction so as to face each other, and mounting portions formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is a base and a substrate portion. A holder mounted on the frame is provided so as to be located below, and the bottom plate portion is provided with a substrate support portion that supports the substrate portion from below.

(5) In the magnetic disk device according to the present invention, in the above (4), the substrate supporting portion is provided below the connecting portion.

(6) In the magnetic disk device according to the present invention, in the above (4), the substrate portion has a track sensor for detecting the outermost track of the recording medium of the magnetic disk, and the substrate support portion is in the vicinity of the track sensor. It is provided below.

(7) In the magnetic disk device according to the present invention, a flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted and another device body are electrically connected. In a magnetic disk device having a board portion having a connecting portion, a motor opening into which a rotor yoke of a spindle motor is inserted, and a frame arranged above the base and the substrate portion, a bottom plate portion and a bottom plate portion of the bottom plate portion are provided. It has side plate portions formed at both ends in a direction orthogonal to the longitudinal direction so as to face each other, and mounting portions formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is a base and a substrate portion. A holder attached to the frame is provided so that it is located below, and the holder is
It is provided with a stopper portion that regulates the upward warp of the substrate portion.

(8) In the magnetic disk device according to the present invention, in the above (7), the stopper portion is formed of a protruding piece extending from the side plate portion to above the edge portion of the substrate portion near the connection portion. (9) The magnetic disk device according to the present invention is the same as (7) above.
In, the stopper portion is formed of a protruding piece extending from the side plate portion so as to cover the connecting portion.

(10) In the magnetic disk device according to the present invention, in (9), the stopper adjusting portion is detachably provided on the protruding piece of the stopper portion and absorbs a gap between the protruding piece and the upper surface of the connecting portion. It is equipped with.

(11) In the magnetic disk device according to the present invention, in the above (10), the protrusion piece of the stopper portion is provided with a hole, and the stopper adjusting portion is insertable on one side to which the protrusion piece of the stopper portion can be fitted. A mouth is provided, a locking piece extending in the insertion opening direction is provided on the opposite surface, and a projection that detachably engages with the hole of the projection of the stopper is provided at the free end of the locking piece. Has been.

[0026]

(1) In the present invention, since the holder to be mounted on the frame is composed of the bottom plate portion and the side plate portions which are formed opposite to each other at both ends in the direction orthogonal to the longitudinal direction of the bottom plate portion, It is possible to easily assemble without adjusting the width dimension of the frame.Because the frame support part of the protruding piece provided on each side plate part of the holder supports the bottom part of the frame, the peripheral part of the motor opening part of the frame Can be reinforced.

(2) In the present invention, since the bottom plate of the holder is provided with the elastic member on the surface facing the base, it absorbs vibrations and shocks from other device bodies transmitted to the spindle motor, Prevents deterioration of motor performance.

(3) In the present invention, since the base supporting portion for supporting the base from below is provided on the bottom plate portion of the holder, when the side plate portion of the holder extends outward when it is attached to another device body. In addition, the base support portion abuts on the base to minimize the deflection of the bottom plate portion of the holder and suppress the adverse effect on the frame.

(4) In the present invention, the bottom plate portion of the holder is provided with the substrate supporting portion for supporting the substrate portion from below, so that the downward warping of the substrate portion is suppressed. Therefore, for example, a paper substrate can be used in this device.

(5) In the present invention, since the substrate supporting portion is provided below the connecting portion, the warp of the substrate portion due to the weight of the connecting portion is suppressed.

(6) In the present invention, since the substrate supporting portion is provided below the vicinity of the track sensor, the substrate portion around the sensor is prevented from lowering, so that the deterioration of the detection function of the track sensor is suppressed.

(7) In the present invention, since the holder is provided with the stopper portion for suppressing the upward warp of the substrate portion, the deformation of the substrate portion can be suppressed. It suppresses the upward warp of the edge of the board portion due to external force when connecting to other equipment main body.

(8) In the present invention, since the stopper portion is composed of the protruding piece extending from the side plate portion to above the edge portion of the substrate portion in the vicinity of the connection portion, an external force at the time of connection with another device main body is provided. It suppresses the warp of the edge of the substrate portion in the upward direction.

(10) In the present invention, since the protruding piece of the stopper portion is provided with the stopper adjusting portion that absorbs the gap between the stopper portion and the upper surface of the connecting portion, the warp of the substrate portion that occurs during connection is suppressed.

(11) In the present invention, when the protruding piece of the stopper portion is inserted through the insertion opening of the stopper adjusting portion, the protruding portion of the locking piece provided on the surface facing the insertion opening causes the stopper portion to protrude. Fit in the hole of the protruding piece of. The stopper adjusting portion is used when the thin connecting portion is mounted on the substrate portion, and fills the gap between the stopper portion and the connecting portion. As a result, it is possible to suppress the warp of the board portion that occurs during connection.

[0036]

1 is an exploded perspective view of a flexible magnetic disk device showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a holder according to the present invention, FIG. 3 is an external view of the flexible magnetic disk device, and FIG. 6 is an enlarged side view showing a part of the flexible magnetic disk device, FIG. 5 is a front view of the flexible magnetic disk device shown with the panel removed, and FIG.
Is a rear view of the flexible magnetic disk device, FIG. 7 is an enlarged rear view of a part of the flexible magnetic disk device, FIG. 8 is an enlarged perspective view of the stopper adjusting portion, and FIG. 9 is a flexible magnetic disk device shown with the panel removed. FIG. 3 is a front view and a back view of FIG. It should be noted that the same or corresponding parts as those of the conventional example described in FIGS.

In these figures, 2 is, for example, a plate thickness of 1.
A frame 2a made of a metal plate of 2 mm is a bottom plate portion of the frame 2. The base 3a and the substrate portion 110 are attached to the lower surface side, and the disk moving mechanism portion 106 and the carriage mechanism portion 107 are attached to the upper surface side, respectively. Reference numeral 2b denotes a motor opening formed larger than the outer diameter of the rotor yoke 3d of the spindle motor 3, and the hub 3c of the motor 3 projects above the bottom plate 2a. 2c, 2d,
Reference numeral 2e is a motor mounting portion for fixing the base 3a, of which the motor mounting portion 2c is a carriage mechanism portion 107.
Axis 3b of the spindle motor 3 with respect to the seek direction of
Is formed at a position orthogonal to each other and extends downward from the inner edge of the motor opening 2b and then extends toward the center, and its height is substantially the same as the thickness of the rotor yoke 3d. . Further, the motor mounting portion 2d is formed in the same manner as the motor mounting portion 2c, and the motor mounting portion 2e is, for example, a cylindrical shape having a female screwed hollow portion,
The lower surface of the bottom plate portion 2a near the switch portion 106h is caulked. In the spindle motor 3, a bearing (not shown) is fixed to the base 3a, one end of the rotating shaft 3b is inserted into the bearing, the hub 3c is fixed to the other end of the rotating shaft 3b, and the rotor yoke 3d is connected to the hub 3c. It is fixed to the outer circumference of.

Reference numeral 4 designates a base 3a and a substrate portion 11 of a paper substrate.
The holder is attached to the bottom plate portion 2a of the frame 2 so as to cover 0, and is attached to the system-side personal computer main body via the attachment portion 105b. The bottom plate portion 4a and both ends of the bottom plate portion 4a in the direction orthogonal to the longitudinal direction. It is composed of a side plate portion 4b provided in the. Reference numeral 4c denotes a frame support portion, which is composed of inwardly projecting pieces provided at the front end portions of the side plate portions 4b of the holder 4, respectively, and when fixed to the frame 2, as shown in FIG. Abut and support. Reference numeral 4d denotes an elastic member fixed to the bottom plate portion 4a facing the spindle motor 3, and is made of, for example, rubber, and is a base 3a of the spindle motor 3 as shown in FIG.
It comes into contact with.

Reference numeral 4e designates a mounting hole for fixing the base 3a to the motor mounting portion 2c of the frame 2, which is the rotating shaft 3b of the spindle motor 3 with respect to the longitudinal center line of the bottom plate portion 4a.
It is arranged at a position orthogonal to each other. Reference numeral 4f denotes a base support portion, which is provided so as to project upward from the bottom plate portion 4a. Reference numeral 4g denotes a first board supporting portion arranged in the width direction at the rear end portion of the bottom plate portion 4a. The first board supporting portion 4g projects upward from the bottom plate portion 4a. As shown in FIG. 6 and FIG.
It supports the substrate unit 110 near 0c.

Reference numeral 4h is a first stopper portion, which is a side plate portion 4b.
It is composed of a protruding piece bent inward from the surface (see FIG. 2). The first stopper portion 4h is for preventing warpage of the board portion 110 when a power supply connector (not shown) is mounted on the board portion 110 in the vicinity thereof, and is connected to the connector on the personal computer main body side. The edge of the substrate 110 is prevented from warping in the upward direction by the external force received by.

Reference numeral 4i is a second stopper portion, which is a side plate portion 4b.
It is composed of a protruding piece extending inwardly from, and extends above the connector 110c mounted on the substrate 110 with a gap (see FIG. 6). Further, a quadrangular through hole 4j is formed at the end thereof. When the flexible magnetic disk device is configured, as shown in FIG. 3, the second stopper portion 4i is exposed behind the cover 103. The gap is a gap that does not break even when the substrate portion 110 of the paper substrate warps upward. 4k is a second substrate supporting portion,
The bottom plate portion 4a includes a protrusion bent upward from an edge portion of a hole formed in the bottom plate portion 4a.
It supports the board portion 110 in the vicinity.

Reference numeral 4m denotes a stopper adjusting portion detachably provided on the second stopper portion 4i (see FIG. 7). For example, as shown in FIG. 8, a projection piece of the second stopper portion 4i is fitted on one side surface. In addition to having a possible insertion port 4n, a locking piece 4p extending in the insertion port 4n direction is provided on the opposite surface thereof.
In addition, a protrusion 4q is provided on the lower surface of the end of the locking piece 4p so as to be detachably engaged with a hole 4j provided in the second stopper portion 4i. The stopper adjusting portion 4m is used when the thin connector 110c is mounted on the board portion 110, and minimizes the gap between the upper surface of the connector 110c and the protruding piece of the second stopper portion 4i. The substrate part 110 is prevented from cracking due to warpage.

In the magnetic disk device constructed as described above, the holder 4 includes the bottom plate portion 4a and the bottom plate portion 4a.
Side plate portions 4 provided at both ends in the direction orthogonal to the longitudinal direction of the
b, the flexible magnetic disk device 101 has a particularly stable width dimension and is easy to assemble. When assembled, the frame support portion 4c supports the frame 2 from below to reinforce the bottom plate portion 2a around the motor opening 2b. When the side plate portions 4b of the holder 4 are respectively extended outward by screws when the holder 4 is attached to the main body of the computer on the system side,
In particular, the peripheral bottom plate portion 4a with holes is trying to bend upward, but since the two base support portions 4f provided on the bottom plate portion 4a are in contact with the base, the deflection is dispersed. It can be kept to a minimum.

When the holder 4 is provided with the bottom plate portion 4a when a shock or the like is received, the board portion 110, the spindle motor 3 and the like mounted on the lower surface of the frame 2 are protected as compared with the prior art, and at the same time, Frame support part 4
The deformation of the bottom plate portion 2a around the motor opening 2b is suppressed by c. Furthermore, at that time, the rubber of the elastic member 4d absorbs the impact, so that the characteristics of the spindle motor 3 are not deteriorated. Further, even if there is vibration from the main body of the personal computer, the rubber of the elastic member 4d absorbs them, so that the characteristics of the spindle motor 3 are not deteriorated.

Further, when the board portion 110 (paper board) is to be bent downward by the external force received when the connector 110c is connected to the connector of the main body of the apparatus, as shown in FIGS. The substrate supporting portion 4g of No. 1 is the substrate portion 11
Since it is in contact with 0, its deflection is suppressed. When a connector for power supply is mounted on the board portion 110 near the first stopper portion 4h, the connector receives an external force when it is connected to the connector on the personal computer body side, and the peripheral portion of the board portion 110 around the connector is connected to the connector. Warps upward, but the warp is restricted by the first stopper portion 4h. Further, since the second stopper portion 4i extends above the connector 110c mounted on the substrate portion 110 with a gap as shown in FIG. 6, the second stopper portion 4i is caused by an external force received at the time of connection with the personal computer body. The upward warp of the portion 110 is regulated. Furthermore, the second
The substrate supporting portion 4k of the track sensor 1 supports the substrate portion 110 near the track sensor 110b from below.
It does not happen that 10b cannot detect the outermost track of the recording medium.

Furthermore, when the thin connector 110c is mounted on the board portion 110, by attaching the stopper adjusting portion 4m to the second stopper portion 4i, the gap with the upper surface of the connector 110c becomes small ( Figure 7
), The substrate 110 does not warp upward due to an external force received at the time of connection. Further, as shown in FIG. 9, the bottom plate portion 4a of the holder 4 has the base 3a and the substrate portion 11a.
Since 0 is covered from below, the display LED 104a that has been conventionally exposed is protected.

[0047]

(1) According to the present invention, the holder to be mounted on the frame is composed of the bottom plate portion and the side plate portions formed opposite to each other at both ends in the direction orthogonal to the longitudinal direction of the bottom plate portion. Therefore, it is possible to easily assemble without adjusting the width dimension of the frame, and since the frame support portion of the protruding piece provided on each side plate portion of the holder supports the bottom portion of the frame, The peripheral portion of the motor opening can be reinforced.

(2) According to the present invention, since the bottom plate of the holder is provided with the elastic member on the surface facing the base, it is possible to absorb vibrations and impacts from other device main bodies transmitted to the spindle motor. It is possible to suppress deterioration of the motor performance.

(3) According to the present invention, since the base support portion for supporting the base from below is provided on the bottom plate portion of the holder, the side plate portions of the holder respectively extend outward when being attached to another device body. In this case, the base support portion comes into contact with the base to minimize the deflection of the bottom plate portion of the holder, which has the effect of suppressing adverse effects on the frame.

(4) According to the present invention, the bottom plate portion of the holder is provided with the substrate supporting portion for supporting the substrate portion from below, so that the downward warping of the substrate portion can be suppressed. For example, a paper substrate can be used for the device.

(5) According to the present invention, since the substrate supporting portion is provided below the connecting portion, the warp of the substrate portion due to the weight of the connecting portion can be suppressed.

(6) According to the present invention, since the substrate supporting portion is provided below the vicinity of the track sensor, the substrate portion around the sensor is prevented from lowering, so that the deterioration of the detection function of the track sensor can be suppressed. You can

(7) According to the present invention, since the holder is provided with the stopper portion for suppressing the upward warp of the substrate portion,
It is possible to suppress the deformation of the board part, to suppress the upward warp of the edge part of the board part due to an external force when connecting to another device body, and the board part may be deformed or broken. Never.

(8) According to the present invention, since the stopper portion is the projection piece extending from the side plate portion to above the edge portion of the board portion in the vicinity of the connection portion, an external force at the time of connection with another device body is provided. It is possible to suppress the warp of the edge portion of the substrate portion in the upward direction. (9) Further, since the stopper portion is composed of the protruding piece extending from the side plate portion so as to cover the connection portion, upward warpage of the substrate portion below the connection portion can be suppressed via the connection portion. .

(10) According to the present invention, the protrusion of the stopper portion is provided with the stopper adjusting portion that absorbs the gap between the upper surface of the connecting portion, so that the warp of the substrate portion that occurs during connection can be suppressed. it can.

(11) According to the present invention, since the protruding piece of the stopper portion is provided with the detachable stopper adjusting portion, the gap between the stopper portion and the connecting portion becomes small, so that the connection to the connecting portion is reduced. It is possible to suppress the warp of the substrate portion that occurs at the time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a flexible magnetic disk device showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a holder according to the present invention.

FIG. 3 is an external view of a flexible magnetic disk device.

FIG. 4 is an enlarged side view showing a part of the flexible magnetic disk device.

FIG. 5 is a front view of the flexible magnetic disk device with the panel removed.

FIG. 6 is a rear view of the flexible magnetic disk device.

FIG. 7 is a rear view showing a part of the flexible magnetic disk device in an enlarged manner.

FIG. 8 is an enlarged perspective view of a stopper adjusting portion.

9A and 9B are a front view and a rear view of a flexible magnetic disk device with a panel removed.

FIG. 10 is a perspective view showing an appearance of a conventional flexible magnetic disk device.

FIG. 11 is an exploded perspective view of a flexible magnetic disk device.

FIG. 12 is a front view and a rear view of a conventional flexible magnetic disk device with a panel removed.

[Explanation of symbols]

2 frame, 2a bottom plate part, 2b motor mounting part, 2
c, 2d, 2e motor mounting portion, 3 spindle motor, 3a base, 3b rotating shaft, 3c hub, 3d
Rotor yoke, 4 holder, 4a bottom plate part, 4b side plate part, 4c frame support part, 4d elastic member, 4f
Base support portion, 4g first substrate support portion, 4h first stopper portion, 4i second stopper portion, 4k second
Board supporting part, 4m stopper adjusting part, 4n insertion port, 4p locking piece, 4q protrusion.

Front page continued (72) Inventor Tamayama, etc. 2-25 Sakaemachi, Koriyama City Mitsubishi Electric Corporation Koriyama Works (72) Inventor Masakatsu Sato 2-25 Sakaemachi, Koriyama City Mitsubishi Electric Engineering Co., Ltd. Kamakura Office Koriyama Branch (72) Inventor Kazunobu Hamazu No. 2-25 Sakaemachi, Koriyama City Mitsubishi Electric Engineering Co., Ltd. Koriyama Branch, Kamakura Office (56) Reference JP-A-7-226067 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 25/04 101 G11B 33/02

Claims (11)

(57) [Claims] 1. A flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted, a board portion having a connecting portion for electrically connecting to another device body, and the spindle. In a magnetic disk device having a motor opening into which a rotor yoke of a motor is inserted, and a frame arranged above the base and the substrate, a bottom plate and a direction perpendicular to the longitudinal direction of the bottom plate are provided. It has side plate portions formed opposite to each other at both ends, and mounting portions respectively formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is located below the base and the substrate portion. So that a holder attached to the frame is provided, and the side plate portion is composed of a protruding piece extending inward, and a frame support that abuts and supports the bottom portion of the frame. Magnetic disk apparatus comprising the parts. 2. A flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted, a board portion having a connecting portion for electrically connecting to another device body, and the spindle. In a magnetic disk device having a motor opening into which a rotor yoke of a motor is inserted, and a frame arranged above the base and the substrate, a bottom plate and a direction perpendicular to the longitudinal direction of the bottom plate are provided. It has side plate portions formed opposite to each other at both ends, and mounting portions respectively formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is located below the base and the substrate portion. A holder mounted on the frame is provided, and the bottom plate portion is provided with an elastic member on a surface facing the base. 3. A flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted, a board portion having a connecting portion for electrically connecting to another device body, and the spindle. In a magnetic disk device having a motor opening into which a rotor yoke of a motor is inserted, and a frame arranged above the base and the substrate, a bottom plate and a direction perpendicular to the longitudinal direction of the bottom plate are provided. It has side plate portions formed opposite to each other at both ends, and mounting portions respectively formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is located below the base and the substrate portion. A holder attached to the frame is provided, and the bottom plate portion includes a base support portion that supports the base from below. . 4. A flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted, a board portion having a connecting portion for electrically connecting to another device body, and the spindle. In a magnetic disk device having a motor opening into which a rotor yoke of a motor is inserted, and a frame arranged above the base and the substrate, a bottom plate and a direction perpendicular to the longitudinal direction of the bottom plate are provided. It has side plate portions formed opposite to each other at both ends, and mounting portions respectively formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is located below the base and the substrate portion. So that a holder mounted on the frame is provided, and the bottom plate portion includes a substrate support portion that supports the substrate portion from below. 5. The substrate supporting portion is provided below the connecting portion.
The magnetic disk device according to claim 4 , wherein the magnetic disk device is provided. 6. The substrate is a recording medium of a magnetic disk.
A track sensor for detecting the outermost circumference of the track,
The substrate support is provided below the vicinity of the track sensor.
The magnetic disk device according to claim 4, wherein 7. A flat plate-shaped base on which a spindle motor having a rotor yoke that rotates about a rotation axis is mounted, a board portion having a connecting portion for electrically connecting to another device body, and the spindle. In a magnetic disk device having a motor opening into which a rotor yoke of a motor is inserted, and a frame arranged above the base and the substrate, a bottom plate and a direction perpendicular to the longitudinal direction of the bottom plate are provided. It has side plate portions formed opposite to each other at both ends, and mounting portions respectively formed on the side plate portions for mounting to other device main bodies, and the bottom plate portion is located below the base and the substrate portion. A holder attached to the frame is provided, and the holder includes a stopper portion that regulates upward warp of the substrate portion. Disk apparatus. 8. The stopper portion is provided in front of the side plate portion.
A protruding piece extending above the edge of the substrate near the connecting portion.
8. The magnetic disk device according to claim 7 , wherein the magnetic disk device comprises: 9. The stopper portion is provided in front of the side plate portion.
Note that it consists of a protruding piece that extends so as to cover the connection part.
The magnetic disk drive according to claim 7, which is a characteristic of the magnetic disk drive. 10. It can be attached to and detached from a protruding piece of the stopper portion.
The gap between the protruding piece and the upper surface of the connecting portion.
Contractor characterized by having a stopper adjustment part that absorbs
The magnetic disk device according to claim 9. 11. A hole is provided in the protruding piece of the stopper portion.
The stopper adjusting portion is provided with a stopper on one side.
If there is an insertion port into which the protrusion of the
A locking piece extending in the direction of the insertion opening is provided on the opposite surface.
And the protrusion of the stopper is attached to the free end of the locking piece.
There is a protrusion that releasably engages with the hole of the raising piece.
11. The magnetic disk device according to claim 10, wherein: