Suspension assembly and disk device

Abstract

The invention provides a suspension assembly and a disk device capable of stably providing inclination of a magnetic head. According to an embodiment, a suspension assembly includes a support plate, a wiring member provided on the support plate and having a head mounting surface and a support projection including a first region having a first height and a second region having a second height lower than the first height and provided on the head mounting surface, and a magnetic head provided on the support projection and having a magnetic field. The magnetic head includes a slider and a head portion provided on the slider, the slider includes a mounting surface and a medium facing surface facing the mounting surface, the mounting surface is fixed to the head mounting surface so as to overlap the support protrusion, and the medium facing surface is inclined so as to be lower than the head mounting surface on the second region side.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2023-151076 (filing date: September 19, 2023). The present application incorporates the entire contents of the basic application by reference. Technical Field

[0002] Embodiments of the present invention relate to a suspension assembly and a disk device including the suspension assembly. Background Art

[0003] As a disk device, for example, a hard disk drive (HDD) includes: a plurality of magnetic disks rotatably arranged in a housing; a plurality of magnetic heads for reading and writing information on the magnetic disks; and a head actuator for supporting the magnetic heads so as to be movable relative to the magnetic disks. The head actuator includes a suspension having a freely displaceable universal joint portion. The magnetic head is mounted on a slider mounting surface of the universal joint portion. In addition, the HDD usually includes a ramp loading mechanism for keeping the magnetic head in an unloading position when not in operation. When the HDD is in operation, the magnetic head is moved from the ramp of the ramp loading mechanism to a loading position on the magnetic disk.

[0004] In an HDD with a ramp loading mechanism, in order to reduce the risk of contact between the magnetic head and the recording medium during the loading operation, the posture of the magnetic head during the loading operation needs to be slightly tilted in the rolling direction. Therefore, the universal joint portion of the suspension is bent so that the slider mounting surface is tilted in the rolling direction.

[0005] However, in bending with an inclination in the rolling direction, the average value easily deviates from the target value, and it is difficult to obtain a desired inclination. Summary of the invention

[0006] Embodiments of the present invention provide a suspension assembly and a disk device capable of providing a stable tilt of a magnetic head.

[0007] According to an embodiment, a suspension assembly comprises a supporting plate, a wiring member and a magnetic head, wherein the wiring member has a head mounting surface and a supporting protrusion and is arranged on the supporting plate, the supporting protrusion includes a first area having a first height and a second area having a second height lower than the first height and is arranged on the head mounting surface, the magnetic head has a slider and a head portion arranged on the slider, the slider has a mounting surface and a medium opposing surface opposite to the mounting surface, the mounting surface is mounted on the supporting protrusion and fixed to the head mounting surface, and the medium opposing surface is inclined relative to the head mounting surface in a manner that the second area is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A perspective view showing a hard disk drive (HDD) according to an embodiment.

[0009] Figure 2 is a perspective view showing an actuator assembly of the HDD.

[0010] Figure 3 is a top view showing the area where the actuator assembly of the HDD is disposed.

[0011] Figure 4 It is a perspective view showing one head suspension assembly of the actuator assembly.

[0012] Figure 5 is an exploded perspective view of the head suspension assembly.

[0013] Figure 6 is a top view of the top end portion of the head suspension assembly.

[0014] Figure 7 is a cross-sectional view of a top end portion of the head suspension assembly.

[0015] Figure 8 (a) is a top view schematically showing the magnetic head and the head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0016] Fig. 9 1 and 2 are diagrams showing an HDD according to a second embodiment, wherein (a) is a top view schematically showing a magnetic head and a head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0017] Fig.10 1 and 2 are diagrams showing an HDD according to a third embodiment, wherein (a) is a top view schematically showing a magnetic head and a head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0018] Fig.11 1 and 2 are diagrams showing an HDD according to a fourth embodiment, wherein (a) is a top view schematically showing a magnetic head and a head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0019] Fig.12 1 and 2 are diagrams showing an HDD according to a fifth embodiment, wherein (a) is a top view schematically showing a magnetic head and a head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0020] Fig.131 and 2 are diagrams showing an HDD according to a sixth embodiment, wherein (a) is a top view schematically showing a magnetic head and a head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0021] Fig.14 1 and 2 are diagrams showing an HDD according to a seventh embodiment, wherein (a) is a top view schematically showing a magnetic head and a head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0022] Fig.15 1 and 10. The figures show an HDD of the eighth embodiment, wherein (a) is a top view schematically showing a magnetic head and a head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0023] Fig.16 1 and 10. The figures show an HDD of the ninth embodiment, wherein (a) is a top view schematically showing a magnetic head and a head support portion, (b) is a side view viewed from the Y direction (roll direction), and (c) is a side view viewed from the X direction (pitch direction).

[0024] Description of Reference Numerals

[0025] 10…housing, 12…base, 12a…bottom wall, 12b…side wall, 17…head, 17a…head slider, 17b…disk-opposing surface (ABS), 17d…outflow end, 17e…inflow end, 17c…back surface, 18…disk, 19…spindle motor, 22…actuator assembly, 30…suspension assembly, 42…flexure (wiring member), 44…universal joint, 44a…tongue, 48…laminated component (FPC), ST1, ST2, ST3…supporting protrusion, MS…mounting surface, Ad…adhesive DETAILED DESCRIPTION

[0026] In addition, the disclosure is only an example, and appropriate changes that can be easily thought of by those skilled in the art while maintaining the main purpose of the invention are of course included in the scope of the present invention. In addition, in order to make the description clearer, the drawings sometimes schematically show the width, thickness, shape, etc. of each part compared with the actual form, but this is only an example and does not limit the interpretation of the present invention. In addition, in this specification and each figure, the same elements as those previously described in relation to the existing figures are marked with the same reference numerals, and sometimes the detailed description is appropriately omitted.

[0027] (First embodiment)

[0028] A hard disk drive (HDD) according to the first embodiment will be described in detail as the disk device.

[0029] Figure 1 This is a perspective view of the HDD according to the first embodiment, showing the HDD with the top cover removed.

[0030] As shown in the figure, the HDD has a rectangular housing 10. The housing 10 has a rectangular box-shaped base 12 with an open upper surface, and a top cover (not shown). The base 12 has a rectangular bottom wall 12a and a side wall 12b erected along the periphery of the bottom wall 12a, and is integrally formed of, for example, aluminum. The top cover is formed of, for example, stainless steel in a rectangular plate shape, and is screwed to the side wall 12b of the base 12 by a plurality of screws.

[0031] In the housing 10, a plurality of magnetic disks 18 as disk-shaped recording media and a spindle motor 19 that supports the magnetic disks 18 and rotates them are provided. The spindle motor 19 is disposed on the bottom wall 12a. Each magnetic disk 18 has a substrate formed in the shape of a disk with a diameter of 95 mm (3.5 inches) and made of a non-magnetic body such as glass or aluminum, for example, and a magnetic recording layer formed on the upper surface (first surface) and the lower surface (second surface) of the substrate. The magnetic disks 18 are coaxially engaged with the unillustrated hub of the spindle motor 19 and are clamped by a retaining spring 20. Thus, the magnetic disks 18 are supported in a state of being located parallel to the bottom wall 12a of the base 12. The plurality of magnetic disks 18 are rotated at a predetermined rotation speed by the spindle motor 19.

[0032] In the present embodiment, for example, four magnetic disks 18 are arranged in the housing 10 , but the number of magnetic disks 18 is not limited thereto, and may be three or less or five or more.

[0033] In the housing 10, there are provided a plurality of magnetic heads 17 for recording and reproducing information on the magnetic disk 18, and an actuator assembly 22 for supporting the magnetic heads 17 so as to be movable relative to the magnetic disk 18. In addition, in the housing 10, there are provided a voice coil motor (VCM) 24 for rotating and positioning the actuator assembly 22, a ramp loading mechanism 25 for holding the magnetic head 17 at an unloading position away from the magnetic disk 18 when the magnetic head 17 moves to the outermost periphery of the magnetic disk 18, and a substrate unit (FPC unit) 21 on which electronic components such as a conversion connector are mounted.

[0034] A printed circuit board (not shown) is screwed onto the outer surface of the bottom wall 12 a of the base 12 . The printed circuit board constitutes a control unit that controls the operation of the spindle motor 19 and controls the operations of the VCM 24 and the magnetic head 17 via the board unit 21 .

[0035] Figure 22 is a perspective view showing the actuator assembly 22. As shown in the figure, the actuator assembly 22 includes: an actuator block 29 having a through hole 26, a bearing unit (unit bearing) 28 disposed in the through hole 26, a plurality of (e.g., 5) arms 32 extending from the actuator block 29, a suspension assembly 30 mounted on each arm 32, and a magnetic head 17 supported by the suspension assembly 30. The actuator block 29 is supported by the bearing unit 28 so as to be rotatable around a support shaft (pivot) 31 disposed upright on the bottom wall 12a.

[0036] In this embodiment, the actuator block 29 and the five arms 32 are integrally formed of aluminum or the like to form a so-called E-block. The arm 32 is formed, for example, in the shape of an elongated flat plate, and extends from the actuator block 29 in a direction perpendicular to the support shaft 31. The five arms 32 are arranged in parallel with gaps therebetween.

[0037] The actuator assembly 22 has a support frame 33 extending from the actuator block 29 in a direction opposite to the arm 32. The voice coil 35 constituting a part of the VCM 24 is supported by the support frame 33. Figure 1 As shown, the voice coil 35 is located between a pair of yokes 37 , one of which is fixed to the base 12 , and constitutes the VCM 24 together with the yokes 37 and the magnets fixed to the yokes.

[0038] like Figure 2 As shown, the actuator assembly 22 includes eight suspension assemblies 30 that respectively support the magnetic heads 17. These suspension assemblies 30 are respectively mounted on the top end portions 32a of the arms 32. The plurality of suspension assemblies 30 include an upward head suspension assembly that upwardly supports the magnetic heads 17 and a downward head suspension assembly that downwardly supports the magnetic heads 17. The upward head suspension assembly and the downward head suspension assembly are configured by changing the vertical orientation of the suspension assemblies 30 of the same structure.

[0039] In this embodiment, Figure 2 In the embodiment, the uppermost arm 32 is provided with a downward head suspension assembly 30, and the lowermost arm 32 is provided with an upward head suspension assembly 30. The three middle arms 32 are provided with an upward head suspension assembly 30 and a downward head suspension assembly 30, respectively.

[0040] Figure 3 is a top view showing a region on the actuator assembly side of the HDD.

[0041] like Figure 1 and Figure 3 As shown, when the actuator assembly 22 and the FPC unit 21 are assembled into the base 12, the actuator assembly 22 is supported to be rotatable about the support shaft 31. The support shaft 31 is erected on the bottom wall 12a of the base 12. Each magnetic disk 18 is located between the two suspension assemblies 30.

[0042] The substrate unit 21 integrally includes a substantially rectangular base portion 58, a thin and long strip-shaped relay portion 57 extending from the base portion 58, and a wiring substrate 51 provided continuously with the top end of the relay portion 57. The base portion 58, the relay portion 57, and the wiring substrate 51 are formed of a flexible printed wiring substrate (FPC). The base portion 58 is arranged on the bottom wall 12a of the base 12, and the wiring substrate 51 is mounted on the installation surface of the actuator block 29.

[0043] The ramp loading mechanism 25 includes a ramp 60 provided on the base 12 and a protrusion 40 that can engage with the ramp 60. As described above, the protrusion 40 is provided at the top end of the load beam 38 of the suspension assembly 30. The ramp 60 is fixed to the bottom wall 12a of the base 12 and is located near the peripheral edge of the magnetic disk 18. The ramp 60 includes a ramp body 62 formed in a block shape. On one side of the ramp body 62, eight guide surfaces (guide portions) 64 are formed to support and guide the protrusions 40 provided on the eight suspension assemblies 30, respectively.

[0044] like Figure 3 As shown, the radially inner direction toward the center of the magnetic disk 18 is defined as the inner direction ID, and the radially outer direction is defined as the outer direction OD. When the HDD is in operation, the actuator assembly 22 rotates in the inner direction ID around the support shaft 31 through the VCM 24, and the plurality of magnetic heads 17 move to the desired seek position while being opposite to the surface of each magnetic disk 18. When the HDD is not in operation, the actuator assembly 22 rotates in the outer direction OD to the unloading position where the magnetic head 17 is located outside the outermost periphery of the magnetic disk 18, and the tabs 40 of the plurality of suspension assemblies 30 ride on (mount) the guide surfaces 64 of the corresponding ramps 60. As a result, the magnetic head 17 is maintained at the unloading position away from the magnetic disk 18 by the ramp 60.

[0045] Next, an example of the suspension assembly 30 will be described in detail.

[0046] Figure 4 is a perspective view showing a suspension assembly, Figure 5 This is an exploded perspective view of the suspension components. Figure 6 It is a top view of the top end portion of the suspension assembly.

[0047] like Figure 4 and Figure 5 As shown, each suspension assembly 30 has a suspension 34 extending from an arm 32, and a magnetic head 17 is mounted on the top end of the suspension 34. The magnetic head 17 and the suspension assembly 30 supporting the magnetic head 17 are collectively referred to as a head suspension assembly.

[0048] The suspension 34, which functions as a support plate, includes a rectangular base plate 36 formed of a metal plate having a thickness of several hundred micrometers, and a thin and long leaf spring-shaped load beam 38 formed of a metal plate having a thickness of several tens of micrometers. The base end of the load beam 38 is arranged to overlap with the top end of the base plate 36, and is fixed to the base plate 36 by welding at multiple locations. The top end of the load beam 38 constitutes the top end of the support plate, and the base end of the load beam 38 and the base plate 36 constitute the base end of the support plate. The width of the base end of the load beam 38 is formed to be substantially equal to the width of the base plate 36. A rod-shaped protrusion 40 is protrudingly provided at the top end of the load beam 38.

[0049] The base end of the base plate 36 has a circular opening 36a and an annular protrusion 36b located around the opening 36a. The protrusion 36b is riveted by fitting it into a circular rivet hole (not shown) formed on the rivet seat surface of the arm 32, thereby fastening the base plate 36 to the top end 32a of the arm 32. The base end of the base plate 36 may also be fixed to the top end 32a of the arm 32 by laser welding, spot welding or bonding.

[0050] The suspension assembly 30 includes a thin and long belt-shaped flexure (wiring member) 42 for transmitting recording signals, reproduction signals, and driving signals of the piezoelectric element, and a pair of piezoelectric elements (for example, PZT elements) 50 mounted on the flexure 42. Figure 2 and Figure 4 As shown in FIG. 1 , the flexure 42 includes a tip portion 42a disposed on the load beam 38 and the base plate 36, a base portion 42b extending outward from the side edge of the base plate 36 and extending along the side edge of the arm 32 to the actuator block 29, and a connection end portion 42c extending from the base portion 42b. The connection end portion 42c includes a plurality of connection pads (electrode pads) 43 arranged in an array. These connection pads 43 are electrically connected to connection terminals provided on the wiring substrate 51 of the actuator block 29.

[0051] like Figure 4 and Figure 5 As shown, the top end of the flexure 42 is located on the top end of the load beam 38, forming a universal joint portion 44 that functions as an elastic support portion. The magnetic head 17 is mounted and fixed on the universal joint portion 44, and is supported by the load beam 38 via the universal joint portion 44. A pair of piezoelectric elements 50 as driving elements are installed on the universal joint portion 44 and are arranged near the magnetic head 17.

[0052] The flexure 42 includes a metal thin plate (metal plate) 46 such as stainless steel as a base, and a strip-shaped laminated member (flexible printed wiring board: FPC) 48 attached or fixed to the metal thin plate 46, forming an elongated laminated plate. The laminated member (FPC) 48 includes a base insulating layer (first insulating layer) mostly fixed to the metal thin plate 46, a conductive layer (wiring pattern) formed on the base insulating layer and constituting a plurality of signal wirings, drive wirings, and a plurality of connection pads, and a cover insulating layer (second insulating layer) covering the conductive layer and laminated on the base insulating layer. At the tip side portion 42a of the flexure 42, the metal thin plate 46 is attached to the surface of the load beam 38 and the base plate 36, or is spot welded to the surface of the load beam 38 and the base plate 36 through a plurality of welding points.

[0053] In the universal joint 44, the metal thin plate 46 integrally includes a substantially rectangular tongue portion (support portion) 44a located at the tip side, a substantially rectangular base end portion 44b located at the base end side with a space apart from the tongue portion 44a, and a pair of elastically deformable outriggers (link portions) 44c respectively connecting the base end portion 44b and the tongue portion 44a. A fixed pad portion 44e is located between the connecting frame 44d and the tongue portion 44a.

[0054] like Figure 4 , Figure 5 , Figure 6 As shown in FIG. 1 , the tongue 44a is formed to be of a size and shape capable of mounting the magnetic head 17, for example, to be formed to be substantially rectangular. That is, one surface of the tongue 44a constitutes a head mounting surface (hereinafter referred to as mounting surface) MS for mounting the magnetic head 17. The tongue 44a is aligned with the central axis C of the suspension 34 (refer to FIG. 1 ) by its width direction. Figure 6 Support protrusions (sometimes referred to as standoffs) ST1 and ST2 described below are provided on the mounting surface MS.

[0055] The approximate center of the other surface (back side) of the tongue 44a contacts the recess 47 protruding from the top end of the load beam 38. The tongue 44a can be elastically deformed by a pair of outriggers 44c and can be displaced in various directions with the recess 47 as a fulcrum. Thus, the tongue 44a and the magnetic head 17 mounted on the tongue 44a can flexibly follow the surface changes of the magnetic disk 18 and be displaced in the roll direction or the pitch direction, and a small gap is maintained between the surface of the magnetic disk 18 and the magnetic head 17.

[0056] In the universal joint portion 44, the laminated member 48 of the flexure 42 is arranged on the metal plate 46 and extends from the base end portion 44b to the tongue portion 44a along the central axis C1. That is, the laminated member 48 has a base end portion 48a attached to the base end portion 44b, a tip portion 48b attached to the tongue portion 44a, and a pair of belt-shaped bridge portions 48c extending from the base end portion 48a to the tip portion 48b in a bifurcated shape.

[0057] A plurality of connection pads (electrode pads) 54 are arranged in the width direction at the top end portion 48b. In addition, a plurality of connection pads (electrode pads) 55 for connecting the piezoelectric element 50 are provided at the top end portion 48b. The stacked member 48 has a plurality of signal wirings W1 extending from the connection pads 54 around both side edges of the top end portion 48b to the base end portion 48a side, and a plurality of drive wirings W2 extending from the connection pads 55 to the base end portion 48a side. These signal wirings W1 and drive wirings W2 extend over substantially the entire length of the stacked member 48 and are connected to the connection pads 43 at the connection end portion 42c.

[0058] Figure 7 is a cross-sectional view of the head mounting portion at the top end of the suspension assembly.

[0059] like Figure 6 and Figure 7 As shown, the magnetic head 17 has a head slider 17a of a substantially rectangular shape and a head 16 disposed on the head slider 17a. The head 16 has a recording element (write head), a reading element (read head), a heater, etc., which are formed by stacking metal films. The head slider 17a has an upper surface (medium-opposing surface or air bearing surface (ABS)) 17b opposite to the surface of the magnetic disk 18, a back surface (equivalent to a mounting surface) 17c on the opposite side, an outflow end 17d located on the top end side of the load beam 38, and an inflow end 17e entering the base end side of the load beam 38. The head 16 is disposed on the outflow end 17d of the head slider 17a. The magnetic head 17 has a plurality of connection pads PT disposed on the outflow end 17d of the head slider 17a. These connection pads PT are electrically connected to the recording element, the reading element, the heater, etc. of the head 16.

[0060] The magnetic head 17 is placed on the tongue 44a and fixed to the tongue 44a by an adhesive Ad, with the back side 17c of the head slider 17a facing the mounting surface MS of the tongue 44a. The magnetic head 17 is configured so that the central axis of the longitudinal direction X is consistent with the central axis C of the suspension 34, and the approximate center of the magnetic head 17 is located on the recess 47. At the same time, the back side 17c of the head slider 17a abuts against two supporting protrusions ST1 and ST2, and the head slider 17a is supported by the supporting protrusions ST1 and ST2. That is, the back side 17c of the slider 17a is separated (raised) from the mounting surface MS by the amount of the height of the supporting protrusions ST1 and ST2. In addition, the supporting protrusions ST1 and ST2 are formed using the first insulating layer, the conductive layer, and the second insulating layer constituting the laminated member (FPC) 48.

[0061] The connection pad PT of the magnetic head 17 is connected to the magnetic head 17 by a conductive adhesive Sd such as solder or silver paste (see Figure 7 ) is electrically connected to the plurality of connection pads 54 of the top end portion 48b. Thus, the magnetic head 17 is connected to the signal wiring W1 of the stacked member 48 via the connection pads 54.

[0062] like Figure 6 As shown, a pair of piezoelectric elements 50 uses, for example, a thin film piezoelectric element (PZT element) in the shape of a rectangular plate. The piezoelectric element 50 is configured in a manner that its length direction (extension direction) is parallel to the central axis C1 of the suspension 34. The two piezoelectric elements 50 are arranged on both sides of the width direction Y of the magnetic head 17 and are arranged parallel to each other. The two ends of the length direction of each piezoelectric element 50 are installed and electrically connected to the connection pad 55 of the top end portion 48b. Thus, the piezoelectric element 50 is connected to the drive wiring W2 of the stacked member 48 via the connection pad 55.

[0063] The piezoelectric element 50 is not limited to the PZT element, and other piezoelectric elements may be used. Furthermore, the driving element is not limited to the piezoelectric element, and other driving elements that can expand and contract by applying an electric current may be used.

[0064] Next, the mounting structure of the magnetic head 17 will be described in detail.

[0065] Figure 8 (a) is a top view schematically showing the magnetic head and the head support part, (b) is a side view of the magnetic head and the head support part observed from the Y direction (roll direction), and (c) is a side view of the magnetic head and the head support part observed from the X direction (pitch direction).

[0066] As shown in the figure, according to this embodiment, two support protrusions ST1 and ST2 are provided on the mounting surface MS of the tongue 44a. As described above, the support protrusions ST1 and ST2 are formed in, for example, a cylindrical shape by the insulating layer and the conductive layer of the same layer as the laminated member (FPC) 48.

[0067] The supporting protrusions ST1 and ST2 corresponding to the first supporting protrusion and the second supporting protrusion are provided at positions opposite to the two corners on the outflow end 17d side of the head slider 17a. The supporting protrusions ST1 and ST2 are provided so as to be arranged in the width direction Y (rolling direction Y) and separated from each other in the width direction Y. The supporting protrusions ST1 and ST2 are provided on both sides of the width direction Y of the central axis C. The heights d1 and d2 of the supporting protrusions ST1 and ST2 (the height in the direction perpendicular to the mounting surface MS) are different from each other. The height (second height) d2 of the supporting protrusion ST2 located on the inner direction ID side is smaller (lower) than the height (first height) d1 of the supporting protrusion ST1 located on the outer direction OD side (d1>d2). The difference (d1-d2) between the heights d1 and d2 is set to a value for giving the head slider 17a a desired tilt angle θ.

[0068] The magnetic head 17 is placed on the tongue 44a in a state where the back surface 17c faces the mounting surface MS. The two corners on the outflow end 17d side of the back surface 17c of the head slider 17a abut against the supporting protrusions ST1 and ST2. That is, the two corners on the outflow end 17d side of the head slider 17a are placed on the supporting protrusions ST1 and ST2 and supported by the supporting protrusions ST1 and ST2. The head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS.

[0069] By placing the magnetic head 17 on the supporting protrusions ST1 and ST2 of different heights, the head slider 17a and the disk-opposing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue 44a. That is, the head slider 17a and the disk-opposing surface 17b are inclined at an angle θ in a direction in which the end portion on the inner direction ID side approaches the tongue 44a, in other words, in a direction in which the end portion on the inner direction ID side moves away from the surface of the magnetic disk 18. The inclination angle θ can preferably be set in a range of -1 to +1 degree, and in one example, is set to -0.2 degrees.

[0070] Thus, when the magnetic head 17 is moved in the inward direction ID and the magnetic head 17 is loaded onto the surface of the magnetic disk 18 from the ramp 60 , the risk of the magnetic head 17 contacting the surface of the magnetic disk can be significantly reduced.

[0071] As described above, according to the suspension assembly and HDD of the first embodiment, at least one supporting protrusion ST1, ST2 having different heights is provided on the slider mounting surface of the suspension. The supporting protrusions ST1, ST2 are arranged at the end portion on the inner direction D side and the end portion on the outer direction OD side of the head slider 17a, and have different heights d1, d2. By mounting the head slider 17a on the supporting protrusions ST1, ST2, the disk-facing surface of the head slider is tilted at the tilt angle θ in the roll direction relative to the mounting surface MS. By adjusting the heights of the supporting protrusions ST1, ST2, a desired tilt angle θ can be easily and stably set.

[0072] That is, according to the above-mentioned structure, it is possible to provide the magnetic head 17 with a stable tilt in the rolling direction by supporting the convex portion without bending a part of the suspension, such as the tongue. Thus, when the magnetic head 17 is loaded onto the surface of the magnetic disk 18, the risk of the magnetic head 17 contacting the surface of the magnetic disk can be reduced, thereby improving the reliability of the HDD.

[0073] As described above, according to the present embodiment, it is possible to obtain a suspension assembly capable of providing a stable tilt of a magnetic head and a disk device including the suspension assembly.

[0074] Next, the magnetic head mounting structure of the suspension assembly of the HDD of other embodiments of the present invention is described. In other embodiments described below, for the components identical with the first embodiment, the reference numerals identical with the first embodiment are marked, and the detailed description thereof is omitted or simplified, and the components different from the first embodiment are described in detail.

[0075] For example, in the magnetic head mounting structure, the shape, the number of arrangements, the arrangement positions, etc. of the supporting protrusions are not limited to those in the first embodiment described above, and various modifications may be made as described below.

[0076] (Second embodiment)

[0077] Fig. 9 (a) is a top view schematically showing the magnetic head and head support portion of the HDD of the second embodiment, (b) is a side view of the magnetic head and head support portion observed from the Y direction (roll direction), and (c) is a side view of the magnetic head and head support portion observed from the X direction (pitch direction).

[0078] As shown in the figure, in the second embodiment, the two supporting protrusions ST1 and ST2 erected on the mounting surface MS of the tongue portion 44a are each formed in a slender prism shape. One supporting protrusion ST1 is provided at a position opposite to the vicinity of the outflow end 17d of the head slider 17a. The supporting protrusion ST1 extends in the width direction (rolling direction) Y, from the vicinity of the side edge on the outer direction OD side of the head slider 17a to the vicinity of the side edge on the inner direction ID side. In addition, the height d1 of the end portion (first region) ea on the outer direction OD side of the supporting protrusion ST1 is different from the height d2 of the end portion (second region) eb on the inner direction ID side. That is, the height d2 of the end portion eb is smaller (lower) than the height d1 of the end portion ea (d1>d2). As a result, the supporting surface (upper end surface) of the supporting protrusion ST1 is inclined at a predetermined angle θ in the rolling direction Y.

[0079] The other support protrusion ST2 is provided at a position opposite to the vicinity of the inflow end 17e of the head slider 17a. The support protrusion ST2 extends in the width direction (rolling direction) Y, from the vicinity of the side edge on the outer direction OD side of the head slider 17a to the vicinity of the side edge on the inner direction ID side. In addition, the height d1 of the end portion (first region) ea on the outer direction OD side of the support protrusion ST2 is different from the height d2 of the end portion (second region) eb on the inner direction ID side. The height d2 of the end portion eb is smaller (lower) than the height d1 of the end portion ea (d1>d2). As a result, the support surface (upper end surface) of the support protrusion ST2 is inclined at a predetermined angle θ in the rolling direction Y. In addition, the heights d1 and d2 of the support protrusion ST1 are formed to be the same as the heights d1 and d2 of the support protrusion ST2.

[0080] The magnetic head 17 is placed on the tongue 44a in a state where the back surface 17c faces the mounting surface MS. The end portion on the outflow end 17d side and the end portion on the inflow end 17e side of the back surface 17c of the head slider 17a are respectively in contact with the upper end surfaces of the supporting protrusions ST1 and ST2. That is, the end portions on the outflow side and the inflow side of the head slider 17a are placed on the supporting protrusions ST1 and ST2 and supported by the supporting protrusions ST1 and ST2. Moreover, the head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS.

[0081] By placing the head slider 17a on the inclined upper end surfaces of the supporting protrusions ST1 and ST2, the head slider 17a and the disk facing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue 44a. That is, the head slider 17a and the disk facing surface 17b are inclined at an angle θ in a direction in which the end portion on the inner direction ID side approaches the tongue 44a, in other words, in a direction in which the end portion on the inner direction ID side moves away from the surface of the magnetic disk 18.

[0082] In the second embodiment, the other configurations of the HDD are the same as those of the HDD of the first embodiment. Also in the second embodiment using columnar support protrusions extending in the width direction Y, the same effects as those of the first embodiment can be obtained.

[0083] (Third embodiment)

[0084] Fig.10 (a) is a top view schematically showing the head and head support portion of the HDD of the third embodiment, (b) is a side view of the head and head support portion observed from the Y direction (roll direction), and (c) is a side view of the head and head support portion observed from the X direction (pitch direction).

[0085] As shown in the figure, in the third embodiment, two supporting protrusions ST1 and ST2 erected on the mounting surface MS of the tongue 44a are formed in the shape of elongated prisms. One supporting protrusion ST1 is provided at a position opposite to the vicinity of the side edge on the outer direction OD side of the head slider 17a. The supporting protrusion ST1 extends in the longitudinal direction (pitch direction) X from the vicinity of the inflow end 17e of the head slider 17a to the vicinity of the outflow end 17d. In addition, the protruding height d1 of the supporting protrusion ST1 is set to be constant over the entire length.

[0086] The other support protrusion ST2 is provided at a position opposite to the side edge of the head slider 17a on the inner direction ID side. The support protrusion ST2 extends from the vicinity of the inflow end 17e of the head slider 17a to the vicinity of the outflow end 17d in the longitudinal direction (pitch direction) X. In addition, the protrusion height d2 of the support protrusion ST2 is set constant over the entire length.

[0087] The height d1 of the support protrusion ST1 is different from the height d2 of the support protrusion ST2. That is, the height d2 of the support protrusion ST2 is smaller (lower) than the height d1 of the support protrusion ST1 (d1>d2). The difference (d1-d2) between the heights d1 and d2 is set to a value that gives the head slider 17a a desired tilt angle θ.

[0088] The magnetic head 17 is placed on the tongue 44a in a state where the back surface 17c faces the mounting surface MS. The end of the back surface 17c of the head slider 17a on the outer direction OD side and the end of the back surface 17c on the inner direction ID side are respectively in contact with the upper end surfaces of the supporting protrusions ST1 and ST2. That is, the head slider 17a is placed on the supporting protrusions ST1 and ST2 and is supported by the supporting protrusions ST1 and ST2. In addition, the head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS.

[0089] By placing the head slider 17a on the upper end surfaces of the support protrusions ST1 and ST2 having different heights, the head slider 17a and the disk facing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue portion 44a. That is, the head slider 17a and the disk facing surface 17b are inclined at an angle θ in a direction in which the end portion on the inner direction ID side approaches the tongue portion 44a, in other words, in a direction in which the end portion on the inner direction ID side moves away from the surface of the magnetic disk 18.

[0090] In the third embodiment, the other configurations of the HDD are the same as those of the first embodiment. Also in the third embodiment using the columnar support protrusions ST1 and ST2 extending in the longitudinal direction X, the same effects as those of the first embodiment can be obtained.

[0091] (Fourth embodiment)

[0092] Fig.11 (a) is a top view schematically showing the head and head support portion of the HDD of the fourth embodiment, (b) is a side view of the head and head support portion observed from the Y direction (roll direction), and (c) is a side view of the head and head support portion observed from the X direction (pitch direction).

[0093] In the mounting structure of the magnetic head, the number of the supporting protrusions is not limited to two, and at least one or three or more may be provided.

[0094] As shown in the drawings, in the fourth embodiment, for example, three cylindrical support protrusions ST1 , ST2 , and ST3 are erected on the mounting surface MS of the tongue portion 44 a .

[0095] The supporting protrusions ST1 and ST2 are provided at positions opposite to the two corners on the outflow end 17d side of the head slider 17a. The supporting protrusions ST1 and ST2 are provided so as to be arranged in the width direction Y (rolling direction Y) and to be separated from each other in the width direction Y. The supporting protrusions ST1 and ST2 are provided on both sides of the central axis C in the width direction Y. The supporting protrusion (third supporting protrusion) ST3 is provided at a position opposite to the central axis C in the central part in the longitudinal direction X of the head slider 17a.

[0096] The heights d1, d2, and d3 of the support protrusions ST1, ST2, and ST3 (the heights in the direction perpendicular to the mounting surface MS) are different from each other. The height d2 of the support protrusion ST2 located on the inner direction ID side, the height (third height) d3 of the support protrusion ST3 located in the center of the width direction Y, and the height d1 of the support protrusion ST1 located on the outer direction OD side are increased in this order (d1>d3>d2). The difference (d1-d2) between the heights d1 and d2 is set to a value that gives the head slider 17a a desired tilt angle θ.

[0097] The magnetic head 17 is placed on the tongue 44a with the back surface 17c facing the mounting surface MS. The back surface 17c of the head slider 17a contacts the three supporting protrusions ST1, ST2, and ST3. That is, the head slider 17a is placed on the supporting protrusions ST1, ST2, and ST3 and is supported by the supporting protrusions ST1, ST2, and ST3. The head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS.

[0098] By placing the magnetic head 17 on the supporting protrusions ST1, ST2, ST3 of different heights, the head slider 17a and the disk-opposing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue 44a. That is, the head slider 17a and the disk-opposing surface 17b are inclined at an angle θ in a direction in which the end portion on the inner direction ID side approaches the tongue 44a, in other words, in a direction in which the end portion on the inner direction ID side moves away from the surface of the magnetic disk 18.

[0099] In the fourth embodiment, the other structures of the HDD are the same as those of the HDD of the first embodiment. In addition, in the fourth embodiment, the same effects as those of the first embodiment can be obtained. In addition, according to the fourth embodiment, by increasing the number of supporting protrusions, the magnetic head can be supported more stably.

[0100] (Fifth embodiment)

[0101] Fig.12 (a) is a top view schematically showing the magnetic head and head support portion of the HDD of the fifth embodiment, (b) is a side view of the magnetic head and head support portion observed from the Y direction (roll direction), and (c) is a side view of the magnetic head and head support portion observed from the X direction (pitch direction).

[0102] In the mounting structure of the magnetic head, the installation position of the supporting protrusion can be changed in various ways.

[0103] As shown in the drawings, in the fifth embodiment, for example, three cylindrical support protrusions ST1 , ST2 , and ST3 are erected on the mounting surface MS of the tongue portion 44 a .

[0104] The supporting protrusions ST1, ST2, and ST3 are arranged to be staggered with each other in the longitudinal direction X of the head slider 17a. More specifically, the supporting protrusion ST1 is provided at a position opposite to one corner (outer direction OS side) on the outflow end 17d side of the head slider 17a. The supporting protrusion ST2 is provided at a position opposite to the side edge on the inner direction ID side of the head slider 17a and spaced apart from the supporting protrusion ST1 in the longitudinal direction X. The supporting protrusion ST3 is provided at a position opposite to the central axis C in the central part in the width direction Y of the head slider 17a. The supporting protrusion ST3 is provided at a distance from the supporting protrusion ST2 toward the inflow end 17e side in the longitudinal direction X.

[0105] The heights d1, d2, and d3 of the support protrusions ST1, ST2, and ST3 (the heights in the direction perpendicular to the mounting surface MS) are different from each other. The height d2 of the support protrusion ST2 located on the inner direction ID side, the height d3 of the support protrusion ST3 located in the center of the width direction Y, and the height d1 of the support protrusion ST1 located on the outer direction OD side are increased in this order (d1>d3>d2). The difference (d1-d2) between the heights d1 and d2 is set to a value that gives the head slider 17a a desired tilt angle θ.

[0106] The magnetic head 17 is placed on the tongue 44a with the back surface 17c facing the mounting surface MS. The back surface 17c of the head slider 17a contacts the three supporting protrusions ST1, ST2, and ST3. That is, the head slider 17a is placed on the supporting protrusions ST1, ST2, and ST3 and is supported by the supporting protrusions ST1, ST2, and ST3. The head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS.

[0107] By placing the magnetic head 17 on the supporting protrusions ST1, ST2, ST3 of different heights, the head slider 17a and the disk-opposing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue 44a. That is, the head slider 17a and the disk-opposing surface 17b are inclined at an angle θ in a direction in which the end portion on the inner direction ID side approaches the tongue 44a, in other words, in a direction in which the end portion on the inner direction ID side moves away from the surface of the magnetic disk 18.

[0108] (Sixth Implementation Method)

[0109] exist Fig.13 In the figure, (a) is a top view schematically showing the head and the head support part of the HDD of the sixth embodiment, (b) is a side view of the head and the head support part observed from the Y direction (roll direction), and (c) is a side view of the head and the head support part observed from the X direction (pitch direction).

[0110] As shown in the drawings, in the sixth embodiment, for example, three cylindrical support protrusions ST1 , ST2 , and ST3 are erected on the mounting surface MS of the tongue portion 44 a .

[0111] The supporting protrusion ST1 is provided near the side edge on the outer direction OD side of the head slider 17a, and is provided at a position offset to the inflow end 17e side from the center portion in the longitudinal direction X. The supporting protrusion ST2 is provided near the side edge on the inner direction ID side of the head slider 17a, and is provided at a position offset to the inflow end 17e side from the center portion in the longitudinal direction X. The supporting protrusions ST1 and ST2 are arranged in the width direction (rolling direction) Y of the head slider 17a.

[0112] The supporting protrusion ST3 is arranged on the central axis C in the vicinity of the outflow end 17 d of the head slider 17 a .

[0113] The heights d1, d2, and d3 of the support protrusions ST1, ST2, and ST3 (the heights in the direction perpendicular to the mounting surface MS) are different from each other. The height d2 of the support protrusion ST2 located on the inner direction ID side, the height d3 of the support protrusion ST3 located in the center of the width direction Y, and the height d1 of the support protrusion ST1 located on the outer direction OD side are increased in this order (d1>d3>d2). The difference (d1-d2) between the heights d1 and d2 is set to a value that gives the head slider 17a a desired tilt angle θ.

[0114] The magnetic head 17 is placed on the tongue 44a with the back surface 17c facing the mounting surface MS. The back surface 17c of the head slider 17a contacts the three supporting protrusions ST1, ST2, and ST3. That is, the head slider 17a is placed on the supporting protrusions ST1, ST2, and ST3 and is supported by the supporting protrusions ST1, ST2, and ST3. The head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS.

[0115] By placing the magnetic head 17 on the supporting protrusions ST1, ST2, ST3 of different heights, the head slider 17a and the disk-opposing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue 44a. That is, the head slider 17a and the disk-opposing surface 17b are inclined at an angle θ in a direction in which the end portion on the inner direction ID side approaches the tongue 44a, in other words, in a direction in which the end portion on the inner direction ID side moves away from the surface of the magnetic disk 18.

[0116] In the fifth and sixth embodiments described above, the other configurations of the HDD are the same as those of the HDD of the first embodiment. Also, in the fifth and sixth embodiments, the same operational effects as those of the first embodiment described above can be obtained.

[0117] (Seventh Implementation Method)

[0118] Fig.14 (a) is a top view schematically showing the head and head support portion of the HDD of the 7th embodiment, (b) is a side view of the head and head support portion observed from the Y direction (roll direction), and (c) is a side view of the head and head support portion observed from the X direction (pitch direction).

[0119] In the support structure of the magnetic head, the number of the supporting protrusions is not limited to two or more, and at least one may be provided.

[0120] As shown in the figure, in the seventh embodiment, a supporting protrusion ST1 is erected on the mounting surface MS of the tongue portion 44a. The supporting protrusion ST1 is formed, for example, in the shape of an elongated prism. The supporting protrusion ST1 is provided at a position opposite to the vicinity of the outflow end 17d of the head slider 17a. The supporting protrusion ST1 extends in the width direction (rolling direction) Y, and extends from the vicinity of the side edge on the outer direction OD side of the head slider 17a across the center axis C to the vicinity of the side edge on the inner direction ID side.

[0121] The supporting protrusion ST1 is formed by including a plurality of regions with different heights. Specifically, the height d1 of the end portion ea on the outer direction OD side of the supporting protrusion ST1 (the first region) is different from the height d2 of the end portion eb on the inner direction ID side (the second region). The height d2 of the end portion eb is smaller (lower) than the height d1 of the end portion ea (d1>d2). Thus, the supporting surface (upper end surface) of the supporting protrusion ST1 is inclined at a predetermined angle θ in the rolling direction Y.

[0122] The magnetic head 17 is placed on the tongue 44a in a state where the back surface 17c faces the mounting surface MS. The end of the back surface 17c of the head slider 17a on the outflow end 17d side abuts against the upper end surface of the supporting protrusion ST1. That is, the end of the outflow side of the head slider 17a is placed on the supporting protrusion ST1 and supported by the supporting protrusion ST1. In addition, the head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS.

[0123] By placing the head slider 17a on the inclined upper end surface of the supporting protrusion ST1, the head slider 17a and the disk facing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue 44a. The head slider 17a and the disk facing surface 17b are inclined at an angle θ in a direction in which the end on the inner direction ID side approaches the tongue 44a, in other words, in a direction in which the end on the inner direction ID side moves away from the surface of the magnetic disk 18.

[0124] In the seventh embodiment, the other configurations of the HDD are the same as those of the HDD of the first embodiment. Also in the seventh embodiment using a single supporting protrusion, the same operational effects as those of the first embodiment can be obtained.

[0125] (Eighth Implementation Method)

[0126] Fig.15 (a) is a top view schematically showing the head and head support portion of the HDD of the 8th embodiment, (b) is a side view of the head and head support portion observed from the Y direction (roll direction), and (c) is a side view of the head and head support portion observed from the X direction (pitch direction).

[0127] In the support structure of the magnetic head, the support protrusion may be formed in a rectangular shape having long sides extending in the longitudinal direction X.

[0128] As shown in the figure, in the eighth embodiment, a supporting protrusion ST1 is erected on the mounting surface MS of the tongue portion 44a. The supporting protrusion ST1 is formed in a rectangular shape, for example. The supporting protrusion ST1 has a short side located near the outflow end 17d of the head slider 17a and extending in the width direction Y, a short side located near the inflow end 17e and extending in the width direction Y, a long side located near the side edge on the outer direction OD side and extending in the length direction X, and a long side located near the side edge on the inner direction ID side and extending in the length direction X. The pair of short sides each extend in the width direction Y by a predetermined length, crossing the central axis C of the head slider 17a.

[0129] The support protrusion ST1 is formed by including a plurality of regions of different heights. Specifically, the height d1 of the end ea on the outer direction OD side of the support protrusion ST1 is different from the height d2 of the end eb on the inner direction ID side. The height d2 of the end eb is smaller (lower) than the height d1 of the end ea (d1>d2). Thus, the support surface (upper end surface) of the support protrusion ST1 is inclined at a predetermined angle θ in the rolling direction Y.

[0130] The back surface 17c of the magnetic head 17 is placed on the upper end surface of the supporting protrusion ST1, and the magnetic head 17 is supported by the supporting protrusion ST1. The head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS. By placing the head slider 17a on the inclined upper end surface of the supporting protrusion ST1, the head slider 17a and the disk facing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue 44a.

[0131] In the eighth embodiment, the other configurations of the HDD are the same as those of the HDD of the first embodiment. Also in the eighth embodiment using a single supporting protrusion, the same operational effects as those of the first embodiment can be obtained.

[0132] (Ninth Implementation Method)

[0133] Fig.16(a) is a top view schematically showing the head and head support portion of the HDD of the 9th embodiment, (b) is a side view of the head and head support portion observed from the Y direction (roll direction), and (c) is a side view of the head and head support portion observed from the X direction (pitch direction).

[0134] As shown in the figure, in the ninth embodiment, the support protrusion ST1 provided on the mounting surface MS of the tongue portion 44a is formed in a rectangular shape. The support protrusion ST1 is formed to have a larger width in the width direction Y than the support protrusion ST1 in the eighth embodiment described above. As a result, a pair of long sides of the support protrusion ST1 are located closer to a pair of side edges of the head slider 17a.

[0135] The support protrusion ST1 is formed by including a plurality of regions with different heights. Specifically, the height d1 of the end ea on the outer direction OD side of the support protrusion ST1 is different from the height d2 of the end eb on the inner direction ID side. The height d2 of the end eb is smaller (lower) than the height d1 of the end ea (d1>d2). Thus, the support surface (upper end surface) of the support protrusion ST1 is inclined at a predetermined angle θ in the rolling direction Y.

[0136] The back surface 17c of the magnetic head 17 is placed on the upper end surface of the supporting protrusion ST1, and the magnetic head 17 is supported by the supporting protrusion ST1. The head slider 17a is bonded to the tongue 44a by the adhesive Ad filled between the back surface 17c and the mounting surface MS. By placing the head slider 17a on the inclined upper end surface of the supporting protrusion ST1, the head slider 17a and the disk facing surface 17b are inclined at an inclination angle θ relative to a plane parallel to the mounting surface MS of the tongue 44a.

[0137] In the ninth embodiment, the other structures of the HDD are the same as those of the HDD of the first embodiment. In the ninth embodiment, the same effects as those of the first embodiment can be obtained. In addition, according to the ninth embodiment, the area of ​​the supporting surface (upper end surface) of the supporting convex portion of the supporting head slider 17a becomes larger, and the magnetic head can be supported in a tilted state more stably.

[0138] Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the main purpose of the invention. In addition, various inventions can be formed by appropriate combinations of multiple constituent elements disclosed in the above-mentioned embodiments. For example, several constituent elements can also be deleted from all the constituent elements shown in the embodiments. These embodiments and their variations are included in the scope and main purpose of the invention, and are also included in the invention recorded in the claims and their equivalents.

[0139] For example, the material, shape, size, etc. of the elements constituting the suspension assembly are not limited to the above-mentioned embodiments, and various changes can be made as needed. The supporting protrusion is not limited to a cylindrical shape, a prism shape, a rectangular shape, etc., and other various shapes can also be applied. In the disk device, the magnetic disks are not limited to 4, and can also be less than 3 or more than 6. The number of suspension assemblies and the number of magnetic heads can also be increased or decreased according to the number of magnetic disks.

Claims

1. A suspension assembly comprising: Support plate; a wiring member having a head mounting surface and a supporting protrusion and provided on the supporting plate, wherein the supporting protrusion includes a first region having a first height and a second region having a second height lower than the first height and provided on the head mounting surface; and A magnetic head comprises a slider and a head portion arranged on the slider, wherein the slider comprises a loading surface and a medium opposing surface opposite to the loading surface, wherein the loading surface is loaded on the supporting protrusion and fixed to the head mounting surface, and the medium opposing surface is inclined relative to the head mounting surface in a manner that the second region is lower side.

2. The suspension assembly according to claim 1, When a direction parallel to the central axis of the slider is defined as a longitudinal direction and a direction intersecting the central axis is defined as a width direction, The first region and the second region of the supporting protrusion are located on both sides of the central axis in the width direction.

3. The suspension assembly according to claim 2, The supporting protrusions include a first supporting protrusion forming the first region and a second supporting protrusion forming the second region.

4. The suspension assembly according to claim 3, The first supporting protrusion and the second supporting protrusion are arranged side by side in the width direction.

5. The suspension assembly according to claim 3, The first supporting protrusion and the second supporting protrusion are arranged at a distance from each other in the longitudinal direction.

6. The suspension assembly according to claim 3, The supporting protrusion further includes a third supporting protrusion disposed between the first supporting protrusion and the second supporting protrusion in the width direction, and the third supporting protrusion has a third height that is lower than the first height and higher than the second height.

7. The suspension assembly according to claim 2, The supporting protrusion includes a columnar first supporting protrusion having one end forming the first region and the other end forming the second region, and extending in the width direction so as to cross the central axis.

8. The suspension assembly according to claim 7, The supporting protrusion includes a columnar second supporting protrusion having one end forming the first region and the other end forming the second region, and extending in the width direction in a manner transverse to the central axis. The second supporting protrusion and the first supporting protrusion are arranged at a distance from each other in the longitudinal direction.

9. The suspension assembly according to claim 7, The first supporting protrusion has a pair of long sides extending in the longitudinal direction and a pair of short sides extending in the width direction.

10. A disk device comprising: a disc-shaped recording medium; and The suspension assembly of claim 1.

11. The disk device according to claim 10, When a direction parallel to the central axis of the slider is defined as a longitudinal direction and a direction intersecting the central axis is defined as a width direction, The first region and the second region of the supporting protrusion are located on both sides of the central axis in the width direction.

12. The disk device according to claim 11, The supporting protrusions include a first supporting protrusion forming the first region and a second supporting protrusion forming the second region.

13. The disk device according to claim 12, The first supporting protrusion and the second supporting protrusion are arranged side by side in the width direction.

14. The disk device according to claim 12, The first supporting protrusion and the second supporting protrusion are arranged at a distance from each other in the longitudinal direction.

15. The disk device according to claim 12, The supporting protrusion further includes a third supporting protrusion disposed between the first supporting protrusion and the second supporting protrusion in the width direction, and the third supporting protrusion has a third height that is lower than the first height and higher than the second height.

Images