WO2007093107A1

WO2007093107A1 - Magnetic disk drive and its assembly method

Info

Publication number: WO2007093107A1
Application number: PCT/CN2006/003453
Authority: WO
Inventors: Mingkui Xu
Original assignee: Shenzhen Excelstor Technology Ltd.
Priority date: 2006-02-17
Filing date: 2006-12-18
Publication date: 2007-08-23
Also published as: HK1095421A1; CN1835117B; CN1835117A

Abstract

A disk drive includes a base (10), a connector (30), and a control circuit board (11) under the base (10). The base (10) has a connecting opening (20), and seal gel adheres to the place around the connecting opening (20). One end of the connector (30) connects with the control circuit board (11) through the connecting opening (20) by its pins, and transfers the read/write data from the magnetic head to the control circuit. The connector (30) is fixed on the connecting opening (20) by two inosculating parts. Said fixation is made that treating the connecting line which connecting the two inosculating parts as a axis, and making the moment applied from seal gel at each side of the axis to the connector (30) balance or be counteracted. The control circuit board (11) is fixed under the connecting opening (20) by two fixing parts. Said fixation is made that treating the connecting line which connecting the two fixing parts as a axis, and making the moment applied from control circuit board (11) at each side of the axis to the connector (30) equate to each other or be counteracted, and prevent the connector (30) from tilting, and making the connection between the pins of the connector (30) and the control circuit board (11) have more stability.

Description

Disk drive and assembly method thereof

[Technical Field]

The present invention relates to a disk drive and a method of assembling the same, and more particularly to a disk drive which is more convenient to assemble a hard disk and has a more stable sealing performance and a method of assembling the same.

【Background technique】

The existing disk drive and assembly method thereof include a base and an upper cover that is sufficiently sealed from the base. The sealed space of the base and the upper cover houses one or more magnetic disks which are covered with a magnetic medium and are mounted on a spindle motor shaft that rotates at a constant high speed. Information is stored on a number of circular orbits of the disk by a row of heads suspended from the end of the electronically controlled drive head. In conventional disk drives and their assembly methods, the common voice coil motor follows Lorentz's law, and the voice coil motor drives the driver head arm to position the head in the radial position required for a stack of disks storing information. When the disk is powered and rotated, the voice coil motor directs the head to the data stored on the rotating disk under the guidance of the servo system. The rotation of the disk creates an air squeezing that creates a thin film of air that is only about 0.3 microns between the head and the disk, causing the head to fly above the disk. Referring to FIG. 2, the base further defines an engaging opening, and a positioning groove is recessed in the base around the engaging opening. An adapter 30' having an irregular edge is fixed to one side of the joint by a screw, and the pin of the adapter is electrically connected to the control circuit board through the joint. An irregularly shaped sealing ring is disposed in the positioning groove corresponding to the adapter 30'. An irregular edge of the adapter 30' and a pair of screw holes are formed in the sealing ring, and a pair of screws respectively pass through the adapter 30' and the screw hole of the sealing ring to fix the adapter to the joint of the base. side.

However, the sealing ring used in the conventional adapter 30' is first positioned in the positioning groove when assembled, and then the adapter 30' is pressed against the sealing ring, and it is necessary to ensure that the screw hole of the sealing ring is aligned with the adapter. The screw hole is not only very inconvenient to assemble, but the sealing ring placed in the positioning groove is very easy to be displaced when the adapter 30' is moved. After the adapter 30' is installed, it is often found that the displacement of the sealing ring can not guarantee the sealing of the disk space. At the same time, the special customization of the individual sealing ring assembly increases the manufacturing cost of the disk drive and its assembly method.

When the conventional disk drive is assembled, generally, irregular fixed edges are protruded on the four sides of the adapter, and a pair of asymmetrical fixing holes are formed in the fixed edge. The adapter 30 is connected to the head signal amplifying circuit by a flexible circuit board. The coupler is then secured with a pair of screws, without taking into account the factors of the fixed torque balance of the adapter. After the adapter is fixed, or because the adapter pin elastically presses the control circuit board to be unbalanced by the reaction force or because of the external force, the adapter will rotate with the screw connection as the axis under the action of the torque, causing the adapter to occur. Deformation, on the one hand Affecting the sealing fit between the adapter and the seal ring. On the other hand, because the adapter and the control circuit board are connected by the elastic pin of the adapter, the deformed adapter will directly affect the adapter pin and Control the connection of the board, which ultimately affects the data read and write of the head.

[Summary of the Invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a disk drive which is more convenient in assembly of a hard disk and more stable in sealing performance and a method of assembling the same.

A technical solution for achieving the above object is: A disk drive comprising a base, an adapter, at least one magnetic disk, at least one read/write magnetic head, and a control circuit board mounted under the base. The signal read by the magnetic head is amplified by a signal amplifying circuit, the base defines a joint opening, one end of the adapter is connected to the amplifying circuit through a flexible circuit board, and the other end of the adapter passes through the joint port and the control circuit board through the pin Touching, the signal read by the magnetic head is transmitted to the control circuit through the adapter. The adapter is fixed on the joint by two joints, and the fixing is based on the line connecting the two joints, so that the sides of the axis are applied to the clutches to balance or cancel each other. The control circuit board is fixed under the joint by two fixing members, and the fixing is based on the line connecting the two fixing members, so that the torques on both sides of the axis are balanced or canceled each other.

A gel sealing the base is adhered around the joint. A positioning groove is formed around the joint opening, and the sealing gel is adhered in the positioning groove. The sealing gel for sealing the base which is adhered to the periphery of the joint by the dispensing device in a predetermined shape has a certain elasticity after solidification.

A pair of screw holes are formed around the upper surface of the base engaging opening, and the connecting member is a pair of screws, and each screw is screwed to the upper surface of the engaging opening to fix the adapter to the base. A pair of screw holes are formed around the bottom of the base joint, and the fixing member is a pair of screws, and each screw is screwed into the screw hole below the joint to fix the control circuit board to the base.

The inner wall of the joint protrudes from a pair of lateral positioning blocks of the opposing positioning adapters and a pair of longitudinal positioning blocks of the opposing positioning adapters.

A disk drive assembly method, comprising: the following steps:

Applying a ring of sealing gel around a joint opening of a disk base for a bonder and solidifying it; at least one disk and at least one read/write head are rotatably mounted on the disk base, and the signal read by the magnetic head is The signal amplification circuit is amplified;

An adapter is fixed on the joint by two joints, the fixing is based on the line connecting the two joints, so that the torque applied to the joints on both sides of the axis of the seal balances or cancels each other. One end of the adapter passes a flexible circuit board is connected to the amplifying circuit, and the other end of the adapter has a pin passing through the joint; a control circuit board is fixed under the joint through two fixing members, the fixing is fixed by two The wire of the piece is an axis, such that the torque applied to the adapter on both sides of the axis balances or cancels each other, and the control circuit board is in contact with the adapter pin, and the signal read by the head by the adapter Transfer to the control board.

The present invention adopts the above technical solutions, and the beneficial technical effects thereof are as follows: 1) The disk drive of the present invention and the assembling method thereof are fixed by means of an adapter torque balance, and the torque balance of the adapter on both sides of the connecting member is obtained. Or offset each other to avoid tilting the bond, making the disk drive seal better. 2) The disk drive of the present invention and the assembly method thereof do not use a separate sealing ring assembly, and are directly bonded around the joint to form a sealing gel. After the gel is solidified, it adheres to the base without further positioning, which makes assembly very convenient. , and the sealing performance is more stable. 3) The disk drive of the present invention and its assembly method reduce the special component of the specially designed sealing ring, saving the manufacturing cost of the disk drive and its assembly method. 4) The disk drive of the present invention and the assembly method thereof avoid the tilt of the bonder, so that the contact connection between the bonder pin and the control circuit board is smoother.

[Description of the Drawings]

The present invention will be further described in detail below by way of embodiments with reference to the accompanying drawings:

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of a disk drive of the present invention and a method of assembling the same.

2 is a view showing the construction of an adapter of a conventional disk drive and its assembling method.

Figure 3 is an exploded perspective view of the adapter of the disk drive of the present invention and its assembly method.

Figure 4 is a partial elevational view of the joint of the disk drive of the present invention and its assembly method.

Figure 5 is a rear elevational view of the adapter of the disk drive of the present invention and its assembly method.

【detailed description】

A disk drive and assembly method thereof, in combination with FIG. 1, for data storage, comprising a base 10, an upper cover fully sealed with the base 10, a plurality of magnetic disks 3 for storing data, a magnetic head 15 for reading and writing data, and a bearing The driving body 6 of the magnetic head 15 and a control circuit board 11 mounted on the lower surface of the base 10. A sealed receiving space is formed between the base 10 and the upper cover 1, and the sealed receiving space houses a magnetic disk 3 for storing data, a magnetic head 15 for reading data, and a driving body 6 for carrying the magnetic head 15. The drive body is provided with a signal amplifying circuit for amplifying the signal of the magnetic head 15. In the present embodiment, the disk drive and its assembly method have two disks 3, each of which is covered with a magnetic medium.

The base 10 defines a joint opening. The joint 10 of the base 10 is provided with an adapter 30. One end of the adapter 30 is connected to the signal amplifying circuit of the driving body 6 through a flexible circuit board 14. The adapter 30 has a plurality of slaves. Extending the upper and lower elastic pins (not shown) of the base, the plurality of pins abutting against the cymbal 10 under the control circuit board 11 Input endpoint. The adapter 30 connects the control circuit board 11 and the signal amplifying circuit to transmit a data signal read by the magnetic head in the sealed space.

A sealing gel 40 is placed around the joint opening 20 of the base 10. As an embodiment of the present invention, a sealing groove (not shown) can be formed around the joint opening 20, and the sealing gel 40 is located in the positioning groove around the joint opening 20. As another embodiment of the present invention for forming a sealing gel, the sealing gel 40 is directly spotted around the joint 20 by a dispensing device in a predetermined shape.

A pair of screw holes 26, 27 are formed around the upper surface of the joint opening 20 of the base 10. A pair of lateral positioning blocks 22 and a pair of longitudinal positioning blocks 24 projecting toward the inside of the joint opening 20, the lateral positioning block 22 and the longitudinal positioning block 24 jointly positioning the adapter 30.

The screw holes 26, 27 of the adapter 30 corresponding to the joint opening 20 of the base 10 also form a pair of screw holes 32, 33. In the present embodiment, a pair of coupling members are respectively passed through the screw holes 32 and 33 of the adapter 30 and the screw holes 26 and 27 of the base to fix the adapter 30 to one side of the joint opening 20, and are mounted. After completion, with the two connecting members of the fixing adapter as the axis, the torque applied to the combiner on both sides of the adapter balances or cancels each other to avoid tilting of the adapter 30, so that the adapter 30 and the seal are sealed. The gel 40 fits more tightly while making the contact connection of the adapter 30 pins and the control circuit board 11 smoother.

A pair of screw holes 28, 29 are formed around the lower surface of the base 10 of the base. The screw holes 28, 29 of the control circuit board corresponding to the underside of the joint opening 20 of the base 10 also form a pair of screw holes (not shown). The pair of connecting members, in the present embodiment, are a pair of screws respectively passing through the screw holes of the control circuit board 11 and the screw holes 28, 29 under the joint opening of the base 10 to fix the control circuit board 11 to the joint 10 of the base 10. Below, after the installation is completed, the pin of the adapter 30 is pressed against the input end of the control circuit board 11, and at the same time, the control circuit board 11 applies a reaction force to the adapter 30. In the present invention, with the two fixing members of the fixed control circuit board 11 as the axis, the torque applied to the combiner 30 by the control circuit board 11 is balanced or canceled each other, so that the control circuit board 11 pairs the adapter 30 pins. The reaction force can be balancedly applied to the adapter 30 to avoid causing the adapter 30 to tilt.

The upper cover 1 is provided with a pneumatic air hole, and a filter 18 is disposed under the air hole.

The base 10 is recessed into a disk space, and a motor 12 is mounted in the center of the disk space. The two disks 3 are mounted on a spindle motor 12 that rotates at a constant high speed. A gap 16 is placed between the two disks 3, and the top of the disk 3 is placed. A pressing piece 17 is attached by a screw, and the pressing piece 17 is deformed by the action of the screw, and a deformation force is generated to press and fix the magnetic disk 3 and to ensure that the disk surface of the magnetic disk 3 is not deformed.

The driving body 6 is fixed to the base 10 by a bearing rotation, and includes four data for reading the front and back data of the two disks respectively. The head arm 5 and the four magnetic heads 15 respectively suspending the ends of the head arms 5 are formed in a coil 7 at the tail of the driving body 6. The coil 7 is located between an upper magnet block 4 and a lower magnet block 9, and the energized coil 7 is rotated by the Loren force under the magnetic field while driving the head arm 5 to rotate, thereby assisting the magnetic head 15 to complete the tracking. After the magnetic head 15 reads the data, the data is transmitted to the nearest signal amplifying circuit (not shown) mounted on the driving body 6, and the read signal is amplified. The amplified signal is transmitted to the control circuit board 11 mounted under the base 10 through a flexible circuit board 14 coupled to the base 10 adapter, and processed by the control circuit board 11. The drive 6 side is also provided with a head assembly locking device 8. When the disk drive and its assembly method are subjected to vibration or impact, the head arm 5 of the driving body 6 supported by the bearing swings left and right to damage the magnetic head 15 and the disk data. At this time, the head assembly locking device 8 is used to chuck the driving body. 6 to prevent it from being forced to rotate. In order to cooperate with the head arm 5 that is parked on the driving body 6, the base 10 is provided with a slanting block 13 at a position where the head arm 5 is unscrewed from the disk 3.

A disk drive assembly method includes the following steps:

Rotating at least one magnetic disk 3 and at least one magnetic head for reading disk data on a disk base 10, the data read and written by the magnetic head 15 is amplified by a signal amplifying circuit;

Opening a joint at the disk base 10;

Applying a ring of sealing gel 40 around the joint;

After the sealing gel 40 is solidified, an adapter 30 is fixed on the joint 20 through a pair of joints, and the end of the adapter 30 is connected to the amplifier circuit through a flexible circuit board 14 at the other end of the adapter. Having a pin, the pin passes through the joint 20, and the fixing is based on the line connecting the two joints, so that the torque applied to the adapter on both sides of the axis is balanced or offsets each other to avoid joint The tilt of the device 30 causes the adapter 30 to cooperate more closely with the sealing gel 40;

A control circuit board 11 is fixed under the joint opening 20 by a pair of fixing members, the control circuit board 11 is in contact with the joint port, and the read/write data of the magnetic head 15 is transmitted to the control circuit 11 by the adapter 30. The fixing is based on the line connecting the two fixing members, such that the torque applied to the adapter on both sides of the axis balances or cancels each other, so that the pin of the adapter 30 is in contact with the control circuit board 11. The link is more stable.

After the disk drive is assembled, the pins of the adapter 30 are pressed against the input end of the control circuit board 11, and at the same time, the control circuit board 11 applies a reaction force to the adapter. In the present invention, with the two fixing members of the fixed control circuit board 11 as the axis, the control circuit board 11 balances or cancels the torque applied to the combiner, so that the control circuit board 11 pairs the adapter 30 pins. The reaction force can be balancedly applied to the adapter 30. Avoid causing the adapter 30 to tilt. When the disk is in operation, each disk 3 is covered with a magnetic medium and mounted on a spindle motor 12 that rotates at a constant high speed. The information is stored on a plurality of circular orbits of the magnetic disk 3 through a row of magnetic heads 15, and the magnetic heads 15 are suspended at the ends of the magnetic head arms 5 of the driving body 6. The voice coil motor of the drive body 6 drives the head arm 5 to position the head 15 at a radial position required for a plurality of magnetic disks 3 storing information. When the magnetic disk 3 is electrically rotated, the voice coil horse 3 positions the magnetic head 15 on the data stored in the rotating magnetic disk 3. Due to the viscosity of the air, the rotation of the magnetic disk 3 causes air squeezing, and a thin air film is formed between the magnetic head 15 and the magnetic disk 3, so that the magnetic head 15 flies above the disk surface of the magnetic disk 3. The data read by the magnetic head 15 is transmitted to a signal amplifying circuit provided in the driving body 6, and the amplified signal is transmitted from the amplifying circuit to the adapter 30 through the flexible circuit board 14, and then transmitted to the control circuit board U by the adapter 30. Output from a standard port, such as an IDE port.

Claims

Rights request

A disk drive comprising a base, an adapter, at least one disk, at least one read/write head, and a control circuit board mounted under the base, wherein the signal read by the head is amplified by a signal amplifying circuit The base defines a joint, one end of the adapter is connected to the amplifying circuit through a flexible circuit board, and the other end of the adapter is connected to the control circuit board through the joint through the pin, and the signal read by the head is passed through the adapter Transmitted to the control circuit, characterized in that: the adapter is fixed on the joint by two joint members, the fixing is based on the line connecting the two joints, and the two sides of the axis are applied to the joint torque Balanced or offset each other, the control circuit board is fixed under the joint by two fixing members, and the fixing is based on the line connecting the two fixing members, so that the torques on both sides of the axis are balanced or canceled each other. .

2. The disk drive according to claim 1, wherein: a gel sealing the base is adhered around the joint.

3. The disk drive according to claim 2, wherein: a positioning groove is formed around the joint opening, and the sealing gel is adhered to the positioning groove.

4. The disk drive according to claim 3, wherein: the sealing gel for sealing the base which is adhered to the periphery of the joint by the dispensing device has a certain elasticity after solidification.

The disk drive according to claim 1, wherein: a pair of screw holes are formed around the base of the base, and the connecting member is a pair of screws, and each screw has a screw hole corresponding to the screwing hole. The adapter is fixed to the base.

The disk drive according to claim 1, wherein: a pair of screw holes are formed around the bottom of the base engaging opening, and the fixing is a pair of screws, and each screw is screwed into the screw hole below the engaging opening. The inner control circuit board is fixed on the base.

The disk drive according to any one of claims 1 to 6, wherein: the inner wall of the joint protrudes from a pair of lateral positioning blocks of the opposite positioning adapters and a pair of longitudinal positioning blocks of the opposite positioning adapters. .

8. A disk drive assembly method, comprising: the following steps: applying a ring of sealing gel around a joint opening of a disk base for a bonder and solidifying it; rotating the disk base At least one magnetic disk and at least one read/write magnetic head, wherein the signal read by the magnetic head is amplified by a signal amplifying circuit;

Attaching an adapter to the joint by two joints, the fixing being a connection of two joints For the axis, the torque applied to the adapter on both sides of the axis balances or cancels each other, and one end of the adapter is connected to the amplifying circuit through a flexible circuit board, and the other end of the adapter has a pin passing through the joint ;

A control circuit board is fixed under the joint by two fixing members, and the fixing is based on the line connecting the two fixing members, so that the torque applied to the adapter on both sides of the axis is balanced or offsets each other. And a control circuit board is in contact with the adapter pin, and the signal read by the magnetic head is transmitted by the adapter to the control circuit board.