WO2004114309A1

WO2004114309A1 - Recording disc drive and ramp member

Info

Publication number: WO2004114309A1
Application number: PCT/JP2003/007788
Authority: WO
Inventors: Hiroaki Kobayashi; Kazunori Akama
Original assignee: Fujitsu Limited
Priority date: 2003-06-19
Filing date: 2003-06-19
Publication date: 2004-12-29
Also published as: JPWO2004114309A1; JP4091075B2

Abstract

A recording disc drive comprising a fixing base (31) erecting in the vertical direction from the bottom face being received by the housing. A protrusion (32) projects from the side face of the fixing base (31) along the horizontal plane. Inclining faces (35) are defined on the protrusion (32) to approach a recording disc toward the center thereof. On the surface of the protrusion (32), first and second sliding faces (36, 37) extending in the horizontal direction are defined continuously in parallel with the side face of the fixing base (31) from the upper end of the inclining faces (35). These inclining faces (35) and the first and second sliding faces (36, 37) face the opposing face of a regulation member (39). Even if an impact is applied to the recording disc drive, forward end of a head actuator is stopped on the opposing face of the regulation member (39) and bouncing of a head slider can be blocked surely.

Description

Description Recording disk drive and ramp member

The present invention relates to a recording disk drive such as an eight-disk drive (HDD), and more particularly, to a mounting stand vertically upright from a bottom surface received by a housing of the recording disk drive, and a side view of the mounting base. A protrusion protruding along a horizontal plane and defining an inclined surface approaching the recording disk toward the center of the recording disk. Background art

For example, in the field of hard disk drive (HDD), a so-called load-unload mechanism is widely known. In this load / unload mechanism, the flying head slider is retracted to a retract position set outside the magnetic disk when the magnetic disk is stationary. In this retracted position, the tip of the head suspension, that is, the load tab, is received by the ramp member.

When the flying head slider moves toward the magnetic disk or when the flying head slider retreats from the magnetic disk, the mouthpiece slides on the ramp member. At this time, if an impact is applied to the HDD, the load tab jumps up from the ramp member. The flying head slider is strongly hit against the HDD housing. Damage to the flying head slider is caused.

Patent Document 1

Japanese Patent Application Publication No. JP-A-2002-2998531 Disclosure of the Invention

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and can reliably prevent the head slider from jumping up when the head slider moves toward the recording disk or when the head slider retreats from the recording disk. Recording disk drive The purpose is to provide.

To achieve the above object, according to the present invention, there are provided a housing, a recording disk incorporated in the housing, a head slider facing the surface of the recording disk, and a head actuator supporting the head slider at a tip. In the evening, a mounting base that stands vertically from the bottom surface received by the housing, and a protrusion that protrudes from the side of the mounting base along the horizontal plane, and defines an inclined surface approaching the recording disk toward the center of the recording disk And a regulating member disposed inside the housing and facing the inclined surface on the protruding piece at the opposing surface.

When the head slider retracts from the recording disk, the tip of the head actuator contacts the inclined surface based on the rotation of the head actuator. Further, when Head Actu Yue rocks, the tip of Head Actu Yue climbs the slope. After that, the tip of the head actuary slides on the surface of the protruding piece. Thus, the head slider retracts to the retract position.

On the other hand, when the head slider moves toward the recording disk, the tip of the head actuator goes down the inclined surface based on the rotation of the head actuator. In this way, the head slider faces the surface of the recording disk while the head of the head actuator goes down the inclined surface. The buoyancy is applied to the head slider by the action of the airflow. Based on such buoyancy, the head slider keeps flying above the surface of the recording disk.

In such a recording disk drive, the regulating member is opposed to the inclined surface at the opposing surface. When the head slider moves toward the recording disk or when the head slider retreats from the recording disk and an impact is applied to the recording disk drive, the head slider tends to jump from the inclined surface. At this time, the tip of the head actuator is received by the opposing surface of the regulating member. The operation of the restricting member surely prevents the head slider from jumping up. Collision between the head slider and the housing is avoided.

Such a recording disk drive is defined on the projection, a first sliding surface extending horizontally from the uppermost end of the inclined surface to the side surface of the mounting base in a horizontal direction, and defined on the projection. A second sliding surface that extends in parallel with the side surface of the mount while descending from the first sliding surface may be further provided. At this time, the first sliding surface may face the regulating member, and the second sliding surface may face the regulating member.

When the head slider retreats from the recording disk, the tip of the head actuator goes from the inclined surface to the first sliding surface. When the head actuator further swings, the tip of the head actuator slides from the first sliding surface toward the second sliding surface. At this time, even if an impact is applied to the recording disk drive, the front end of the head actuator is received by the opposing surface of the regulating member. Bouncing of the head slider can be reliably prevented by the function of the regulating member.

Generally, the mounting base and the protruding piece constitute a lamp member. The regulating member may be formed into a mounting base and a protruding piece based on integral molding. Alternatively, the regulating member may be fixed to the inward surface of the housing.

In realizing the recording disk drive as described above, a mounting stand that stands vertically from the bottom surface received by the housing of the recording disk drive, and protrudes from the side of the mounting base along the horizontal plane to the center of the recording disk What is necessary is just to provide a ramp member for a recording disk drive device, comprising: a protruding piece that defines an inclined surface approaching a recording disk as it approaches, and a regulating piece that is opposed to the inclined surface at the opposing surface.

In such a ramp member for a recording disk drive, the regulating piece is opposed to the inclined surface on the opposing surface. Even when the head slider moves toward the recording disk or when the head slider moves away from the recording disk, an impact is applied to the recording disk drive, and the tip of the head actuator is received by the opposing surface of the regulating piece. . Bouncing of the head slider is reliably prevented by the function of the regulating piece.

Such a ramp member for a recording disk drive device is defined on the projecting piece, a first sliding surface extending horizontally from the uppermost end of the inclined surface to the side surface of the mounting base in a horizontal direction, and a first sliding face defined on the projecting piece. A second sliding surface may be further provided that extends in parallel with the side surface of the mounting table while descending from the sliding surface. At this time, the first sliding surface only needs to face the regulating piece. The restriction piece may be connected to the mounting base based on integral molding.

Furthermore, in realizing the above-described recording disk drive, a recording disk A mounting stand that stands vertically from the bottom that is received by the housing of the drive unit, and an inclined surface that protrudes along the horizontal plane from the side of the mounting stand and approaches the recording disk toward the center of the recording disk A first sliding surface defined on the projecting piece, extending horizontally from the uppermost end of the inclined surface to the side surface of the mounting base in a horizontal direction, and a first sliding surface defined on the projecting piece. The recording disk drive device ramp member comprises a second sliding surface extending in parallel to the side surface of the mounting table while descending from the mounting surface, and a regulating piece facing the first sliding surface at the opposing surface. May be provided. At this time, the restriction piece may be connected to the mounting base based on integral molding.

In realizing the recording disk drive as described above, an inward surface that spreads along a reference plane and faces the head suspension that supports the head slider at the distal end, A housing canister provided with a displacement regulating surface facing a ramp member to be received may be provided.

When such a housing cover is incorporated in the recording disk drive, the displacement regulating surface is opposed to the tip of the head suspension. When the head slider moves toward the recording disk or when the head slider retreats from the recording disk, even if a shock is applied to the recording disk drive, the tip of the head suspension is received by the displacement regulating surface. By the function of the displacement regulating surface, the jumping-up of the head slider can be reliably prevented.

In such a housing cover, the displacement restricting surface may have a slope defined on the ramp member and approaching the recording disk toward the center of the recording disk. A sliding surface defined on the ramp member continuously from the uppermost end of the inclined surface and extending in a direction away from the recording disk may further face the displacement regulating surface.

Furthermore, in realizing the above-described recording disk drive device, an inward surface that extends along a reference plane and faces a head suspension that supports a head slider at a tip, and a displacement regulating surface that rises from the inward surface are provided. The displacement control surface is provided on a ramp member, and an inclined surface approaching the recording disk toward the center of the recording disk is opposed to the housing base. May be provided.

When such a housing base is incorporated in a recording disk drive, the displacement regulating surface is opposed to the tip of the head suspension. When the head slider moves toward the recording disk or when the head slider retreats from the recording disk, even if a shock is applied to the recording disk drive, the tip of the head suspension is received by the displacement regulating surface. By the function of the displacement regulating surface, the jumping-up of the head slider can be reliably prevented.

In such a housing base, a sliding surface defined on the ramp member continuously from the uppermost end of the inclined surface and extending in a direction away from the recording disk may face the displacement regulating surface. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view schematically showing a specific example of a recording disk drive according to an embodiment of the present invention, that is, a hard disk drive (HDD).

FIG. 2 is an enlarged perspective view of a lamp member according to one specific example.

FIG. 3 is an enlarged partial cross-sectional view of the HDD taken along line 3-3 in FIG. 1, and is a view schematically showing the structure and function of a lamp member.

FIG. 4 is an enlarged perspective view of a lamp member according to another specific example.

FIG. 5 is an enlarged partial cross-sectional view of the HDD corresponding to FIG. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 schematically shows an internal structure of a specific example of a recording disk drive according to the present invention, that is, a hard disk drive (HDD) 11. The HDD 11 includes, for example, a box-shaped housing body, that is, a housing base 12 that partitions the internal space of a flat rectangular parallelepiped. One magnetic disk 13 as a recording medium is accommodated in the accommodation space. The magnetic disk 13 is mounted on a rotating shaft of a spindle motor 14. The spindle motor 14 can rotate the magnetic disk 13 at a high speed such as, for example, 5400 rpm or 720 rpm. Base 1 2 has a base 1 2 A lid, which seals the accommodation space, that is, a housing cover (not shown) is connected therebetween.

A data zone 17 is defined between the innermost recording track 15 and the outermost recording track 16 on the surface of the magnetic disk 13. In data zone 17, recording tracks are drawn concentrically. No information, that is, no data is recorded in a non-delay zone defined inside the innermost recording track 15 or outside the outermost recording track 16. In the containment space, a head actuary 18 is further housed. The head actuator 18 includes an actuator block 21 rotatably connected to a vertically extending support shaft 19. In the actuator block 21, a plurality of actuators 22 extending in the horizontal direction from the support shaft 19 are defined. Such an actuator block 21 may be formed from aluminum, for example, based on the structure.

At the tip of each actuator arm 22, a head suspension 23 extending forward from the actuator arm 22 is attached. A so-called gimbal spring (not shown) is connected to the tip of the head suspension 23. The flying head slider 24 is fixed on the surface of the gimbal spring. By the action of such a gimbal spring, the flying head slider 24 can change its attitude with respect to the head suspension 23.

A so-called magnetic head, that is, an electromagnetic transducer (not shown) is mounted on the flying head slider 24. The electromagnetic transducer includes, for example, a write element (not shown) such as a thin-film magnetic head that writes information on a magnetic disk 13 using a magnetic field generated by a thin-film coil pattern, a spin-valve film and a tunnel. If it is composed of a read element (not shown), such as a giant magnetoresistance (GMR) element or a tunnel junction magnetoresistance (TMR) element, which reads information from the magnetic disk 13 using the resistance change of the bonding film Good.

A pressing force is applied to the flying head slider 24 from the head suspension 23 toward the surface of the magnetic disk 13. Buoyancy acts on the flying head slider 24 by the action of airflow generated on the surface of the magnetic disk 13 based on the rotation of the magnetic disk 13. The magnetic force is balanced by the balance between the pressing force and the buoyancy of the head suspension 23. During the rotation of the air disk 13, the flying head slider 24 can keep flying with relatively high rigidity.

When the head actuator 18 rotates around the support shaft 19 while the flying head slider 24 is flying, the flying head slider 24 can move along the radial line of the magnetic disk 13. As a result, the electromagnetic transducer on the flying head slider 24 can cross the data zone 17 between the innermost recording track 15 and the outermost recording track 16. Thus, the electromagnetic transducer on the flying head slider 24 is positioned on the target recording track. The rotation of the head actuator 18 can be realized through the operation of a power source 25 such as a voice coil motor (VCM).

A load tab 26 extending forward from the tip of the head suspension 23 is fixed to the tip of the head suspension 23. The load tab 26 can move in the radial direction of the magnetic disk 13 based on the swing of the head actuator 18. The on the movement path of the load tab ₂ 6 ramp 2 7 is placed outside the magnetic disk 1 3. The tip of the ramp member 27 enters inside from the outer edge of the magnetic disk 13 and faces the surface of the magnetic disk 13 outside the outermost recording track 16. The ramp member 27 and the load tab 26 cooperate to form a so-called single-door unloading mechanism. The lamp member 27 may be molded from a hard plastic material, for example. As shown in FIG. 2, the ramp member 27 includes a mounting base 31 that is screwed to the bottom plate of the base 12 outside the magnetic disk 13, for example. The mounting base 31 is vertically upright from the bottom surface received by the bottom plate of the base 12. On the side surface of the mounting base 31, a projecting piece 32 protruding from the side surface of the mounting base 31 toward the support shaft 19 of the head actuator 18 along a horizontal plane is formed. The projecting piece 32 is integrated with the mounting base 31 based on, for example, integral molding. A receiving groove 33 is formed in the mounting base 31 and the projecting piece 32. The magnetic disk 13 is received in the receiving groove 33.

A contact surface 34 is defined on the surface of the projection 32 along the movement path of the load tab 26. The contact surface 34 has an inclined surface 35 arranged closest to the outermost recording track 16 on the magnetic disk 13. The inclined surface 35 is inside the magnetic disk 13 As it approaches the mind, it approaches the surface of the magnetic disk 13. The first sliding surface 36 is connected to the uppermost end, that is, the outer end of the inclined surface 35. The first sliding surface 36 extends horizontally from the uppermost end of the inclined surface 35 to the side surface of the mounting table 28 along the movement path of the load tab 26. An outer end of the first sliding surface 36 is connected to a second sliding surface 37 force S extending in a direction away from the magnetic disk 13. The second sliding surface 37 extends in parallel to the side surface of the mounting base 28 while descending from the first sliding surface 33 along the movement path of the load tab 26. The second sliding surface 37 is arranged at a position lower than the first sliding surface 36. In other words, the second sliding surface 37 is closer to one horizontal plane including the surface of the magnetic disk 13 than the first sliding surface 36 is. When the first and second sliding surfaces 36, 37 are connected, the second sliding surface 37 is formed with an inclined surface that gradually decreases as the distance from the first sliding surface 36 increases.

At the position closer to the support shaft 19 of the head actuator 18 than the contact surface 34, a displacement regulating surface 38 is defined on the protruding piece 32. The displacement regulating surface 38 may extend at least in parallel with the second sliding surface 37. When the load tab 26 is received by the second sliding surface 37 as described later, the displacement regulating surface 38 faces the flying head slider 24. By the action of the displacement regulating surface 38, the collision between the adjacent flying head sliders 24 is prevented.

On the side surface of the mounting base 31, a plate-shaped restricting member, that is, a restricting piece 39 is formed, which protrudes along a horizontal plane toward the support shaft 19 of the head actuator 18. A contact surface 34, that is, an inclined surface 35, and first and second sliding surfaces 36, 37 are opposed to the opposing surface of the restriction piece 39. A predetermined space for receiving the load tab 26 is secured between the restriction piece 39 and the contact surface 34. The restricting pieces 39 need only be opposed to the first and second sliding surfaces 36 and 37 at equal intervals. The restricting piece 38 may be integrally formed on the mounting base 31 and the protruding piece 32 based on integral molding.

Now, assume that the rotation of the magnetic disk 13 stops. When the writing and reading of information are completed, the power source 25 rotates the head actuator 18 around the support shaft 19 in the forward direction. The actuator 22 and the head suspension 23 are driven outward of the magnetic disk 13. As shown in FIG. 3, the flying head slider 24 does not move beyond the outermost recording track 16 to form a non-data zone. That is, when facing the landing zone, the load tab 26 contacts the inclined surface 35 of the contact surface 34. When the arm 22 further swings, the mouth 26 moves up the slope 35. As the load tab 26 climbs the inclined surface 35, the tip of the head suspension 23 gradually moves away from the surface of the magnetic disk 13. When the gimbal spring engages the head suspension 23, the flying head slider 24 is pulled up from the surface of the magnetic disk 13. Thereafter, when the arm 22 further swings, the load tab 26 slides from the first sliding surface 36 to the second sliding surface 37. When the load tab 26 is moved as far away from the magnetic disk 13 as possible, the flying head slider 24 is positioned at the retracted position. Thus, the load tab 26 is received by the ramp member 27. The rotation of the magnetic disk 13 stops. Since the load tab 26 is held on the ramp member 27, collision or contact of the flying head slider 24 with the magnetic disk 13 can be avoided even in a windless state. Adsorption between the lubricant spreading on the surface of the magnetic disk 13 and the flying head slider 24 can be effectively prevented. In particular, since the load tab 26 is held by the second sliding surface 37, the engagement between the gimbal spring and the head suspension 23 is released. The deformation of the gimbal spring is avoided while the magnetic disk 13 is stationary.

When the HDD 11 receives a command to write or read information, first, the magnetic disk 13 starts rotating. When the rotation of the magnetic disk 13 reaches a steady state, the power source 25 rotates the head actuator 19 around the support shaft 19 in the opposite direction to the above-described forward direction. The actuator arm 22 and the head suspension 23 are driven toward the rotation axis of the magnetic disk 13. The load tab 26 slides on the second sliding surface 37, the first sliding surface 36, and the inclined surface 35 in this order. The load tab 26 goes down the slope 35 based on the swing of the arm 22. In this way, the flying head slider 24 faces the surface of the magnetic disk 13 while the load tab 26 moves down the inclined surface 35. The flying head slider 24 is provided with buoyancy based on an airflow generated along the surface of the magnetic disk 13. Thereafter, when the arm 22 further swings, the load tab 26 is separated from the inclined surface 35, that is, the ramp member 27. The magnetic disk 13 rotates in a steady state. As a result, the flying head slider 24 can keep flying above the surface of the magnetic disk 13 without being supported by the ramp member 27.

In the HDD 11 as described above, the regulating piece 39 is opposed to the inclined surface 35 and the first and second sliding surfaces 36 and 37 on the opposing surface. When the flying head slider 24 moves toward the magnetic disk 13 or when the flying head slider 24 retreats from the magnetic disk 13 and the HDD 11 receives an impact, the load tab 26 becomes Attempts to jump from the inclined surface 35 and the first and second sliding surfaces 36, 37. At this time, the load tab 26 is received by the opposing surface of the restriction piece 39. The opening of the mouth tab 26, that is, the flying head slider 24, is reliably prevented by the function of the regulating piece 39. Collision between the flying head slider 2 and the housing cover or base 12 is prevented. Thus, not only when the load tab 26 is stationary but also when the mouth tab 26 is moved, damage to the flying head slider 24 is reliably avoided.

In particular, the above-mentioned HDD 11 incorporates one magnetic disk 13. In such an HDD 11, the magnetic disk 13 is usually arranged close to the bottom plate of the base 12. A large space is formed between the slope 35 and the first and second sliding surfaces 36, 37 and the cover. The impact of the collision between the flying head slider 24 and the cover based on the jump of the load tab 26 increases. Even in such a case, the action of the restricting piece 39 ensures that the mouth tab 26, ie, the flying head slider 24, does not jump. Damage to the flying head slider 24 can be reliably avoided.

For example, two or more magnetic disks 13 may be incorporated in the HDD 11 described above. At this time, as shown in FIG. What is necessary is just to form the projecting piece 32. A receiving groove 33 is formed in each protruding piece 32. Each of the projecting pieces 32 has a contact surface 34, that is, an inclined surface 35, and first and second sliding surfaces 36 and 37, as described above. In the drawings, structures and configurations equivalent to those of the above-described embodiment are denoted by the same reference numerals.

In such an HDD 11, the regulating piece 39 is opposed to the inclined surface 35 and the first and second sliding surfaces 36, 37 on the opposing surface. When the flying head slider 24 moves toward the magnetic disk 13 or when the flying head slider 24 When evacuating from 3, even if an impact is applied to the HDD 11, the load tab 25 is received by the opposing surface of the regulating piece 39. By the action of the restricting pieces 39, the load tab 26, that is, the flying head slider 24 is surely prevented from jumping up. The collision between the flying head slider 24 and the cover is prevented. Damage to the flying head slider 24 is reliably avoided.

In addition, as shown in FIG. 5, the regulating member 39 may be fixed to the inward surface 41a of the cover 41, for example. The inward surface 41a extends along the reference plane. The head suspension 23 is opposed to the inward facing surface 41a. The restricting member 39 defines a displacement restricting surface 42 facing the ramp member 27. The displacement regulating surface 42 rises from the inward surface 41a. The above-described inclined surface 35 and the first sliding surface 36 are opposed to the displacement regulating surface 42. A second sliding surface 37 may be further opposed to the displacement regulating surface 42. In the figure, configurations and structures equivalent to those of the above-described embodiment are denoted by the same reference numerals.

Similarly, the regulating member 39 may be fixed to the inward surface 12 a of the base 12, for example. The inward surface 1 2a extends along the reference plane. The head suspension 22 is opposed to the inward facing surface 12a. In the regulating member 39, a displacement regulating surface 43 facing the ramp member 27 is defined. The displacement regulating surface 43 rises from the inward surface 12a. The above-described inclined surface 35 and the first sliding surface 36 are opposed to the displacement regulating surface 43. The second sliding surface 37 may further face the displacement regulating surface 43.

In the HDD 11 as described above, the displacement restricting surfaces 42 and 43 face the inclined surface 35 and the first sliding surface 36. When the flying head slider 24 moves toward the magnetic disk 13, or when the flying head slider 24 retreats from the magnetic disk 13, even if an impact is applied to the HDD 11, the load head 2 6 Is received by the displacement regulating surfaces 42 and 43. By the action of the displacement regulating surfaces 42 and 43, the load tab 26, that is, the flying head slider 24 can be reliably prevented from jumping up. The collision between the flying head slider 24 and the housing cover or base 12 is prevented. Damage to the flying head slider 24 is reliably avoided.

In addition, the above-mentioned displacement regulating surfaces 42, 43 are provided with a cover 41, which rises from the reference plane. It may be defined by the inward faces 41 a and 12 a of the base 12.

Claims

The scope of the claims

1. The housing, the recording disk incorporated in the housing, the head slider facing the surface of the recording disk, the head actuator supporting the head slider at the tip, and the bottom perpendicular to the housing. A mounting base that stands upright in the direction, a projection that protrudes from the side of the mounting base along the horizontal plane, and defines an inclined surface that approaches the recording disk toward the center of the recording disk; A recording disk drive, comprising: a regulating member disposed to face an inclined surface on a protruding piece at an opposing surface.

2. The recording disk drive according to claim 1, wherein a first sliding surface defined on the projecting piece and extending in a horizontal direction from an uppermost end of the inclined surface to a side surface of the mounting base in parallel. A second sliding surface defined on the protruding piece and extending in parallel with a side surface of the mounting base while descending from the first sliding surface, wherein the first sliding surface is opposed to the regulating member. Recording disk drive.

3. The recording disk drive according to claim 2, wherein the second sliding surface is opposed to the regulating member.

4. The recording disk drive according to any one of claims 1 to 3, wherein the regulating member is fixed to an inward surface of a housing.

5. The recording disk drive according to any one of claims 1 to 3, wherein the restricting member is integrated with the mounting base and the projecting piece based on integral molding. Disk drive.

6. A mounting table that stands vertically from the bottom surface received by the recording disk drive housing, and protrudes along the horizontal plane from the side of the mounting table to A ramp member for a recording disk drive, comprising: a projecting piece defining an inclined surface approaching a recording disk toward a center; and a regulating piece facing an inclined surface at an opposing surface.

7. The ramp member for a recording disk drive according to claim 6, wherein the first sliding surface is defined on the protrusion and extends horizontally from the uppermost end of the inclined surface to the side surface of the mounting base in parallel. And a second sliding surface defined on the protruding piece and extending in parallel with the side surface of the mounting base while descending from the first sliding surface, wherein the first sliding surface is opposed to the regulating piece. A ramp member for a recording disk drive device, characterized in that:

8. The ramp member for a recording disk drive according to claim 6 or 7, wherein the restricting piece is connected to the mounting base based on integral molding. Lamp members.

9. A mounting base that stands vertically from the bottom surface that is received by the recording disk drive housing, and an inclined surface that protrudes along the horizontal plane from the side of the mounting base and approaches the recording disk toward the center of the recording disk A projecting piece that is defined on the projecting piece and extends horizontally from the top end of the slope to the side of the mounting base in parallel

(1) A sliding surface, a second sliding surface defined on the protruding piece and extending in parallel with the side surface of the mounting table while descending from the first sliding surface, and a regulation that opposes the first sliding surface on an opposing surface. And a lamp member for a recording disk drive.

10. The ramp member for a recording disk drive device according to claim 9, wherein the regulating piece is connected to the mounting base based on integral molding.

1 1. A head suspension that extends along the reference plane and supports the head slider at the tip. An inward surface facing the head suspension and a displacement regulating surface that rises from the inward surface and faces a ramp member that receives the tip of the head suspension. Equipment A cover for a housing, characterized in that

12. The housing cover according to claim 11, wherein an inclined surface defined on a ramp member and approaching the recording disk toward the center of the recording disk is opposed to the displacement regulating surface. Cover for housing characterized by the above-mentioned

13. The housing cover according to claim 12, wherein the displacement regulating surface is defined on the ramp member continuously from an uppermost end of the inclined surface and extends in a direction away from the recording disk. A housing cover having a moving surface facing each other.

1 4. An inward surface that extends along the reference plane and faces the head suspension that supports the head slider at the tip, and a displacement regulating surface that rises from the inward surface. A base for a housing, characterized in that inclined surfaces approaching the recording disk are faced toward the center of the recording disk.

15. The housing base according to claim 14, wherein the displacement regulating surface is provided on the ramp member continuously from an uppermost end of the inclined surface and extends in a direction away from the recording disk. A housing base characterized by moving surfaces facing each other.