JP4059164B2 - Head support device and disk device using the same - Google Patents

Description

  The present invention relates to a disk device having a floating head, for example, a head support device used in a magnetic disk device, an optical disk device, a magneto-optical disk device, and the like, and a disk device using the same.

  A disk recording / reproducing apparatus (hereinafter abbreviated as “disk apparatus”) such as a hard disk apparatus (hereinafter also referred to as “HDD”) records and reproduces data on a recording surface of a disk as a recording medium by a head. In the HDD, a head support device (also referred to as a head actuator device or a carriage device) is provided, whereby the head is supported in a state of floating over the data recording surface of the disk at a predetermined interval, and is moved over the disk. It is configured to move in the radial direction, and many proposals including these configurations and structures have been made (for example, see Patent Document 1).

  FIG. 19 is a plan view showing the configuration of the main part of a magnetic recording / reproducing apparatus as a head supporting apparatus in a magnetic recording / reproducing apparatus such as an HDD as an example of a head supporting apparatus of a disk apparatus having a conventional flying head. In order to explain the configuration and operation of the head support device, description will be made with reference to FIG.

  In FIG. 19, a head support device 101 includes a load beam 102 having a relatively low rigidity, an elastic member 103, and a carriage 104 having a relatively high rigidity. A magnetic head (not shown) is provided on the lower surface of one end of the load beam 102. A mounted slider 105 is provided.

  The magnetic recording medium 106 is configured to be rotated by a spindle motor 107, and the levitation force received by the slider 105 due to the air flow generated with the rotation of the magnetic recording medium 106 during recording / reproduction of the magnetic recording / reproducing apparatus. The slider 105 is lifted from the magnetic recording medium 106 by a certain amount, that is, the magnetic mounted on the slider 105, from the balance relationship with the biasing force by the elastic member 103 of the head support device 101 that biases the slider 105 toward the magnetic recording medium 106. The head is configured to float a certain amount from the magnetic recording medium 106.

  The head support device 101 is rotated around the second bearing portion 109 by the action of the voice coil 108 provided on the side opposite to the load beam 102 of the carriage 104 during recording or reproduction by the magnetic recording / reproducing device. The magnetic head mounted on the slider 105 is positioned with respect to a desired track of the magnetic recording medium 106 to perform recording or reproduction.

  Further, the configuration and operation of the head support device 101 will be described with reference to FIG. FIG. 20 is a perspective view of a main part of a portion where the magnetic head is provided in the head support device 101 of FIG.

  In FIG. 20, a magnetic head (not shown) is provided on the surface of the slider 105 provided on the lower surface side of one end of the load beam 102 and facing the magnetic recording medium (not shown). On the other hand, the other end of the load beam 102 is bent to form an elastic member 103, and the elastic member 103 is locked to the carriage 104. In order to prevent the load on the magnetic recording medium of the slider 105 from changing due to vertical movement due to surface deflection of the magnetic recording medium, manufacturing variation in the distance between the slider 105 and the magnetic recording medium during mass production, etc. The member 103 is provided with a notch 111 so that the rigidity of the elastic member 103 is lowered and the spring constant is reduced to give flexibility.

Further, it is known that torsion of a carriage or the like greatly affects the operation of the head support device, and a technique for reducing a vibration mode such as torsion has been proposed (see, for example, Patent Document 2). As a specific example of such a proposal, a bending shape of a spring portion (equivalent to an elastic member) is adjusted to adjust a bump (equivalent to a bending size of the spring portion) and an offset (offset: The slider moves almost with respect to the first torsional resonance frequency by optimally setting the position height of the connecting portion between the load beam and the spring portion and the portion where the spring portion is connected to the carriage. It is something to prevent.
JP-A-9-82052 (page 4) JP-A-8-45214 (page 6)

  However, in the head support device having the above-described conventional configuration, for example, the elastic member 103 is provided with a notch 111 or the load beam 102 has a thin plate structure, thereby reducing the rigidity of the elastic member 103 and reducing the spring constant. Since the head support device 101 moves the magnetic head to a target track position at a high speed, the resonance frequency is lowered and a vibration mode such as torsion is generated. As a result, off-track occurs, and it takes time to settle the generated vibration mode, and there is a limit to shorten the access time.

  Further, as in the above example, even if the bending shape of the spring portion is adjusted and the bump and the offset are set optimally, it is effective for the first-order torsional resonance frequency, but it is effective for the higher-order torsional resonance frequency. An effective effect cannot be obtained. Also, optimally setting the bump and offset in the spring portion requires adjustment for each head support device in consideration of manufacturing variations in the distance between the head arm (equivalent to a carriage) and the disk. However, this is not an easy operation, and there has been a problem that the number of manufacturing steps increases.

  In addition, the speed at which the magnetic head is moved to the target track position has become increasingly high in recent years. Therefore, the torsional vibration mode has a very high torsional vibration frequency, and the higher-order torsional resonance vibration mode However, there is a problem that the magnetic head is off-track from the target track position.

  Further, in order to make the primary torsion mode of the load beam inconspicuous, the bending shape of the spring portion (elastic member) of the load beam is adjusted. However, when the setting height (Z-height) of the load beam is changed, there is a problem that adjustment is necessary to obtain stable performance because the characteristics change.

  The present invention solves the above-described problems, is not affected by manufacturing variations in the distance between the carriage and the magnetic recording medium, increases the rigidity of the load beam to greatly increase the resonance frequency, and increases the setting height of the load beam. Eliminates the effects of dispersion and stabilizes the resonance characteristics, and improves the reliability of the head positioning control characteristics without off-track even for higher-order torsional resonance. It is another object of the present invention to provide a head support device, and to provide a disk device including such a head support device.

In order to achieve this object, a head support device of the present invention includes a head, a load beam that supports the head, a bearing portion that is provided between the load beam and the carriage, and that is rotatable in a direction perpendicular to the recording medium. And an elastic member for connecting the load beam and the carriage, and side reinforcing portions provided on the load beam, and the side reinforcing portions are formed by bending both side edges of the load beam, respectively. In a cross section perpendicular to the center line, members having a substantially U-shaped cross-sectional shape are bonded together so that the overall cross-sectional shape is substantially H-shaped. A head; a load beam supporting the head; dimples provided on the load beam; a bearing provided between the load beam and the carriage; and rotatable in a direction perpendicular to the recording medium; An elastic member for connecting the carriage and a side reinforcing portion provided on the load beam are formed by bending each side edge of the load beam with respect to the longitudinal center line of the load beam. In a vertical cross section, members having a substantially U-shaped cross-sectional shape are bonded together so that the overall cross-sectional shape is substantially H-shaped. Further, the bearing portion is two pivots, and the dimples provided on the load beam have a configuration having a vertex on a perpendicular bisector of a line connecting the tops of the respective pivots.

With these configurations, the load beam can be rotated against the elastic force of the elastic member, and the slider can be pressed against the surface of the recording medium with a desired pressing force. It is possible to obtain a head support device in which the slider is freely moved so as to follow the movement of the surface of the rotating recording medium by improving rigidity and vibration characteristics. Moreover, since the side reinforcement can be formed by a normal simple processing method, the rigidity of the load beam can be increased without incurring high costs, and the resonance frequency is greatly increased to stabilize the resonance characteristics. At the same time, it is possible to realize a head support device that supports a high-speed access speed without off-tracking even for higher-order torsional resonance. Furthermore, even against external shocks and torsional vibrations when moving the magnetic head to the target track at high speed, the rigidity of the load beam is increased to improve the resonance frequency characteristics, and against higher-order torsional resonance frequencies. However, the position of the top of the dimple does not move, and therefore no off-track is generated, and a head support device corresponding to a high access speed can be realized.

As described above, the present invention can rotate the load beam against the elastic force of the elastic member and press the slider against the surface of the recording medium with a desired pressing force. Increases the rigidity of the load beam, improves vibration characteristics, and provides a head support device that allows the slider to move freely along the surface of the rotating recording medium. Can be formed, so that the rigidity of the load beam can be increased without incurring high costs, and the resonance frequency is greatly increased to stabilize the resonance characteristics, and also to high-order torsional resonance. It is possible to realize a head support device that supports a high-speed access speed without off-track.

  In addition, by mounting such a head support device, the head positioning control characteristics can be improved, the head can be moved to the target track position at high speed, and the access time has been greatly shortened, and a highly reliable disk device Can be realized.

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

(Embodiment 1)
1, 2 and 3 are diagrams for explaining the head support device of the disk device according to the first embodiment of the present invention. Hereinafter, a magnetic recording / reproducing apparatus will be described as an example of the disk apparatus. FIG. 1 is a side view showing a head support device having a floating head of a disk device used in a computer storage device and the like together with a part of a disk such as a magnetic recording medium. 2A is a perspective view of a main part for showing a schematic configuration of the head support device of the present invention, and FIG. 2B is an exploded perspective view of the main part for showing a schematic configuration of the head support device of the present invention. It is. FIG. 3 is a side view showing the principal part of the head support device of the present invention in a broken section.

  In FIG. 1, a magnetic head (not shown) mounted on a slider 3 of a plurality of head support devices 2 is configured to face the magnetic recording medium layers formed on the upper and lower surfaces of a plurality of magnetic recording media 1. Has been. During recording or reproduction by the magnetic recording / reproducing apparatus, the magnetic head mounted on the slider 3 is magnetically arranged with the second bearing portion 6 as the rotation center axis by the action of driving means such as a voice coil provided on the carriage 4. The recording medium 1 is rotated in the radial direction and positioned with respect to the target track of the magnetic recording medium 1. The driving means 5 is described as using a voice coil motor, but is not limited to the voice coil motor, and a configuration using a linear motor or other driving method may be used. In the following description, as clearly shown in FIG. 3, the head support device 2 provided to face the lower surface side of the magnetic recording medium 1 will be described.

  Although FIG. 1 shows the configuration of two magnetic recording media 1, there is no change even if one magnetic recording medium or three or more magnetic recording media. In the above description, the upper and lower surfaces of the magnetic recording medium are used. However, only one head support device corresponding to one surface of the magnetic recording medium may be used.

  2 and 3, a slider 3 having a magnetic head (not shown) mounted on one end is disposed, and a flexure 21 having a gimbal portion 20 in which a thin metal plate material such as SUS and a flexible wiring board are integrally formed is fixed. For example, a leaf spring-like elastic member 23 is formed on a part of the load beam 22, and the open end of the elastic member 23 is well-known on the carriage 4 such as a spot welding method, an ultrasonic welding method, or a laser welding method. It is fixed by the method. The elastic member 23 may be composed of a part member having a separate elasticity different from that of the load beam 22. When the elastic member 23 is a member having a separate elasticity, the elastic member 23 has a elasticity by a method such as the well-known welding method described above. One end of the member is fixed to the load beam 22 and the other end is fixed to the carriage 4. The carriage 4 is provided with two pairs (two) of pivots 25 at positions where left and right are symmetrical with respect to the center line 24 in the longitudinal direction of the load beam 22 (the pivot 25 causes the load beam 22 to be magnetically coupled). Therefore, the rotating portion (elastic member) of the load beam 22 against the elastic force of the elastic member 23 such as a leaf spring of the load beam 22 fixed to the carriage 4 can be rotated. 3) is pushed up and rotated around the two pivots 25 in the direction of arrow A in FIG. 3, and the slider 3 disposed on the load beam 22 is a magnetic recording medium 1 ( The slider 3 is urged toward the magnetic recording medium 1 so as to press the surface of the magnetic recording medium 1 (not shown in FIG. 2). Further, a balancer 26 (not shown in FIG. 2) is fixed to the other end of the load beam 22 (the end opposite to the slider 3 side), and the rotating portion of the load beam 22 and the slider 3 are attached. A line connecting the vertices of the two pivots 25 of the carriage 4 with the total center of gravity of the flexure 21 and the balancer 26 in the direction of the magnetic recording medium 1 serves as a rotation axis, and is perpendicular to the magnetic recording medium 1 including the rotation axis. It is comprised so that it may exist on a plane. By providing such a balancer 26, the load beam 22 is rotated around a rotation axis connecting the vertices of the two pivots 25 of the carriage 4 when receiving an impact force due to an external impact or the like. The force does not act, and the slider 3 does not collide with the surface of the magnetic recording medium 1 to cause damage, so that the reliability can be improved.

  Further, a dimple 28 having a vertex 27 is formed on a surface of the load beam 22 facing the slider 3 on a surface perpendicular to the plane portion 22 a of the load beam 22 including the longitudinal center line 24. A load beam 22 that swingably supports the slider 3 is connected via the flexure 21. Since the load beam 22 and the slider 3 are in contact directly or via the flexure 21 by the apex 27 of the dimple 28, the slider 3 can freely move along the movement of the surface of the rotating magnetic recording medium 1. it can. The center line 24 in the longitudinal direction of the load beam 22 is set so that the load beam 22 passes through the rotation center that is rotated by the action of a voice coil (not shown) that is a driving means provided in the carriage 4 and the like. Has been. Further, the apex 27 of the dimple 28 may directly contact the slider 3 instead of supporting the slider 3 via the flexure 21.

  FIG. 4 is a cross-sectional view of the load beam 22 shown as a cross section in a plane perpendicular to the center line 24 and passing through the apex 27 of the dimple 28 in FIG. As shown in FIG. 4, side reinforcing portions 41 are formed on almost the entire side surfaces of the left and right side surfaces of the load beam 22. In FIG. 4, the left and right side surfaces of the load beam 22 each have a substantially V-shaped cross section, and the entire cross section is shown as a side reinforcing portion 41 formed in a substantially W shape. The side reinforcing portion 41 does not have to be substantially W-shaped and may have other shapes, but a shape that can be formed by bending is desirable. Needless to say, other members may be integrally formed. Further, the side reinforcing portion 41 is not formed over the entire side surface, but is formed in a portion extending from the slider 3 side end portion to the periphery on the opposite side of the slider 3 side end portion of the elastic member 23 made of at least a leaf spring or the like. Also good.

  Further, since the side reinforcing portion 41 is provided in the vicinity of the elastic member 23 made of a leaf spring or the like, the rigidity of the load beam 22 is increased, and the load beam 22 in the direction toward the magnetic recording medium 1 due to impact, vibration or the like is increased. As a result, it is possible to suppress vertical shaking, rolling due to rolling or twisting along the surface of the magnetic recording medium 1, and the load beam 22 can be formed of a thin plate or the like, thereby realizing a reduction in weight and size. it can.

  Further, since the rigidity of the load beam 22 becomes very large by forming the side reinforcing portion 41, as shown in the perspective view of the schematic configuration of the main part of the head support device in FIG. An opening 29 made up of a plurality of holes is provided in the flat surface portion 22a, and an opening 51 made up of a hole in the longitudinal direction is provided at the center of the flat surface portion 22a of the load beam 22 as shown in FIG. Thus, the weight can be reduced and the resonance characteristics of the load beam 22 can be adjusted. FIG. 2A shows an example in which the opening 29 is arranged along the center line 24 with three circles having different diameters on the plane portion 22a of the load beam 22, but the first embodiment of the present invention. The opening 29 formed in the load beam 22 constituting the head support device is not limited to this. Besides the circular shape, the opening 29 may be formed in an elliptical shape or a polygonal shape, or a plurality of different shapes other than the same shape may be combined. Further, the size of the opening 29 can be set as appropriate so that it can be formed in the flat portion 22 a of the load beam 22, and the end of the opening 29 can be provided up to the vicinity of the side reinforcing portion 41. Further, the load beam 22 may be formed by providing the opening 29 in an elongated interdigital shape. However, it is desirable that the opening 29 be symmetrically arranged with respect to the center line 24 of the load beam 22 or be symmetrically arranged.

  In this manner, by providing the opening 29 in the flat surface portion 22a of the load beam 22, it is possible to realize a reduction in weight and size as in the case where the load beam 22 is configured by a thin plate or the like. Further, the load beam 22 may be formed of a thin plate or the like, and an opening 29 may be provided in the flat portion 22a of the load beam 22. For the shape, number and arrangement of the openings 29 and the plate thickness of the load beam 22, an optimum combination may be selected in consideration of the rigidity of the load beam 22. FIG. 6 is a plan view showing a typical example of the opening formed in the load beam.

  When the head support device 2 moves the magnetic head to a target track position at a high speed, the load beam 22 is more likely to generate a torsional vibration as the speed increases. At this time, even if torsional vibration occurs in the load beam 22, if the positional relationship between the slider 3 and the apex 27 of the dimple 28 of the load beam 22 in contact with the slider 3 does not move, the magnetic head is moved to the target track position at high speed. When moving, there is no occurrence of off-track due to the generated torsional vibration, and the access time to the target track position can be shortened. In order to achieve such a configuration, it is necessary to match the position of the apex 27 of the dimple 28 of the load beam 22 with the neutral axis of the torsion of the load beam 22.

  At this time, the shape of the cross section of the load beam 22 cut along a plane perpendicular to the center line 24 in FIG. 2A and passing through the apex 27 of the dimple 28 should be symmetrical with respect to the center line 24 both vertically and horizontally. For example, it is on a plane passing through the three points of the apex of the two pivots 25 of the carriage 4 and the apex 27 of the dimple 28 of the load beam 22, and the midpoint is perpendicular to the line connecting the apexes of the two pivots 25. The passing line 31 (see FIG. 3) can be matched to the neutral axis of the torsion of the load beam 22 described above. For this purpose, the side of each portion of the load beam 22 described above is set so that the cross section of the load beam 22 shown in FIG. 4 and the centroid of each cross section of the load beam 22 parallel to the cross section are on the line 31. What is necessary is just to set the shape of the reinforcement part 41. FIG. In other words, when the shape of the cross section of the load beam 22 is symmetrical both vertically and horizontally with respect to the center line 24, when the load beam 22 resonates and twists, only the stress due to the torsional moment needs to be considered, and the stress becomes zero. The position of the centroid which is the position and the position of the apex 27 of the dimple 28 of the load beam 22 may be made to coincide with each other.

  Further, the shape of the side reinforcing portion 41 in all the portions of the load beam 22 is not set so that the shear center of each cross section of the load beam 22 is on the line 31, but the dimple 28 of the load beam 22 is not set. The shear center of each cross section in the vicinity is on the line 31, and the shear center of each cross section gradually increases from the line 31 toward the elastic member 23 of the load beam 22 from the vicinity of the dimple 28 of the load beam 22. Even if the shape of the side reinforcing portion 41 is set so as to deviate, the amount of off-track due to torsional vibration becomes very small, there is no practical problem, and the access time to the target track position can be shortened.

  In the description of the head support device 2 according to the first embodiment of the present invention described above, the side reinforcing portion is formed such that the load beam 22 is substantially V-shaped on each of the left and right side surfaces, and the entire cross-section is substantially W-shaped. An example of a configuration that includes 41 and is symmetric but is not symmetric in the vertical direction includes a dimple 28 having a vertex 27 on a plane perpendicular to the plane portion 22a of the load beam 22 including the center line 24 in the longitudinal direction. It is formed and described so that the position of the apex 27 is matched on the perpendicular bisector of the line connecting the apexes of the two pivots 25 whose torsional neutral axis (line 31) is used. However, the present invention is not limited to this example. Instead, the position of the apex 27 of the dimple 28 is such that the dimple 28 can be formed on the plane portion 22a of the load beam 22, and the cross section of the load beam 22 and the cross section thereof are parallel to the cross section. It may be set to a position that matches the shear center of each section. At this time, the neutral axis of the twist is on a plane passing through the apexes of the two pivots 25 and the apex 27 of the dimple 28, and the midpoint of the line connecting the apexes of the two pivots 25 and the apex 27 of the dimple 28 Coincides with the line 31 passing through. Furthermore, the line 31 does not have to be a straight line and may be a gentle curve. In this case, it goes without saying that at least the cross section of the load beam 22 is not symmetric with respect to the longitudinal centerline 24 thereof. However, at this time, the cross-section of the load beam 22 and the shear center of each cross-section parallel to the cross-section are planes passing through the three points of the apexes of the two pivots 25 of the carriage 4 and the apex 27 of the dimple 28 of the load beam 22. The line 31 is on a line 31 passing through the midpoint of the line connecting the vertices of the two pivots 25, but the line 31 is not a perpendicular bisector of the line connecting the vertices of the two pivots 25. Also in this case, the apex 27 of the dimple 28 can be matched with the neutral axis of torsion of the load beam 22.

  Further, the side reinforcing portion 41 greatly increases the rigidity of the load beam 22, and the position of the apex 27 of the dimple 28 of the load beam 22 matches the neutral axis of the torsion of the load beam 22. 4 and the magnetic recording medium 1, that is, even if there is a variation in the setting height of the load beam 22, the load beam 22 is not affected by shock, vibration, or vibration caused by a seek operation that moves the magnetic head to the target track. Resonance characteristics can be stabilized, and higher-order torsional resonance can also be reduced, making it difficult for off-track to occur. In other words, the influence of variations in the setting height of the load beam 22 can be eliminated. .

  Needless to say, the head support device 2 configured as described above can be applied to all head support devices including the head support device facing the upper surface side of the magnetic recording medium 1. As shown, the magnetic recording medium 62 rotated by the spindle motor 61 is applied to a magnetic recording / reproducing device 65 having a head support device 64 that is rotated in the radial direction by the action of the voice coil 63. The magnetic head can be moved to the target track position at high speed, and the magnetic recording / reproducing apparatus 65 with a greatly shortened access time can be realized.

  As described above, according to the first embodiment, the resonance characteristics of the load beam can be stabilized even if the setting height of the load beam varies, and the position of the slider can be controlled against torsional vibration. The head positioning control characteristics can be improved without change, and the access time for moving the magnetic head to the target track can be shortened.

  Further, for example, by forming a side reinforcing portion in the vicinity of an elastic member made of a leaf spring to enhance the rigidity of the load beam, an opening having a hole, for example, is provided in a part of the load beam, or a thin plate Can be used to form a load beam, and a head support device that is reduced in weight and size can be realized.

  Furthermore, by mounting such a head support device, it is possible to improve the head positioning control characteristics, move the magnetic head to the target track position at high speed, and realize a disk device with greatly shortened access time. be able to.

  In the above description, the vertex of the pivot 25 is a point, but the load beam may be rotated not only by the point but also by an axis such as a wedge shape.

(Embodiment 2)
8 and 9 are diagrams for explaining the head support device according to the second embodiment of the present invention. FIG. 8 is a side view showing the main part of the head support device with a fractured surface, and FIG. 9 is a slider. It is the perspective view of the load beam seen from the attachment surface side. 8 and FIG. 9, the same reference numerals as those in FIG. 2 (a) and FIG. 3 are given to the elements corresponding to the constituent elements in FIG. 2 (a) and FIG. . Similarly to the first embodiment, a magnetic recording / reproducing apparatus will be described below as an example of the disk apparatus. The second embodiment of the present invention is different from the first embodiment described above in that two pivots are not formed on the carriage, but two pivots are located symmetrically with respect to the longitudinal center line of the load beam. This is the point that formed the pivot.

  8 and 9, an elastic member 23 made of, for example, a leaf spring is provided on a part of a load beam 22 to which a flexure 21 having a slider 3 having a magnetic head (not shown) mounted at one end is fixed. The open end of the elastic member 23 is fixed to the carriage 4 by a known method similar to that of the first embodiment. Note that the elastic member 23 may be formed of a separate member different from the load beam 22 as in the first embodiment. The load beam 22 is provided with two pivots 25 at positions symmetrical with respect to the center line 24 in the longitudinal direction, and resists the elastic force of the elastic member 23 of the load beam 22 fixed to the carriage 4. Thus, the slider 3 disposed on the load beam 22 pushes up the load beam 22 so as to press the surface of the magnetic recording medium 1 and urges the slider 3 toward the magnetic recording medium 1.

  Further, similarly to the first embodiment described above, a dimple 28 is formed on the surface of the load beam 22 facing the slider 3 so that the apex 27 of the dimple 28 contacts the slider 3 via the flexure 21. The slider 3 is connected to the load beam 22. Note that the center line 24 in the longitudinal direction of the load beam 22 is set so as to pass through the rotation center that is rotated by the action of a voice coil (not shown), as in the first embodiment. In addition, it is on a plane passing through the three points of the two pivots 25 of the load beam 22 and the vertex 27 of the dimple 28, and passes through the midpoint of the line connecting the vertices of the two pivots 25. There is a vertex 27 of the dimple 28 on a line 31 perpendicular to the line connecting the vertices of the pivot 25 so that the line 31 becomes a neutral axis of torsion of the load beam 22. For this purpose, the shape of the side reinforcing portion 71 in each portion of the load beam 22 is set so that the shear center of each cross section of the load beam 22 or the centroid is on the line 31.

  Therefore, the head support device constituted by the load beam 22 having such a shape has the same effect as that of the first embodiment. That is, the apex 27 of the dimple 28 of the load beam 22 does not move even if torsional vibration occurs, and no off-track occurs even if the magnetic head is moved to the target track position at high speed. The access time can be shortened, and the influence of the variation in the setting height of the load beam 22 due to manufacturing variations can be eliminated, so that the impact, vibration, or vibration caused by the seek operation for moving the magnetic head to the target track can be avoided. It is possible to stabilize the resonance characteristics of the load beam 22 and reduce higher-order torsional resonance. In addition, an opening having a hole, for example, may be provided in the center of the flat surface portion 22a of the load beam 22 to reduce the weight and adjust the resonance characteristics of the load beam 22. By constituting 22 with a thin plate or the like, it is possible to realize a reduction in weight and size.

  By applying the head support device configured as described above, the magnetic head can be moved to the target track position at high speed, and an excellent disk device with a greatly shortened access time can be realized.

  As described above, according to the second embodiment, the resonance effect of the load beam can be stabilized even if the setting effect of the load beam varies with the same effect as the first embodiment. Further, the position of the slider does not change even with respect to torsional vibration, the head positioning control characteristics can be improved, and the access time for moving the magnetic head to the target track can be shortened.

  Also, it is possible to provide a head support device that is reduced in weight and size by providing a hole, for example, an opening in which a hole is formed in a part of the load beam, or forming a load beam using a thin plate. Can do.

  In addition, although the example which provided the opening part which consists of a hole part of a longitudinal direction in the center part of the plane part of the load beam 22 is shown in FIG. 9, the shape and arrangement | positioning of an opening part are not restricted to this example, It is possible to use various shapes and arrangements as illustrated in FIG. 6 as described in the first embodiment.

  Also in the description of the head support device according to the second embodiment of the present invention described above, the load beam 22 is substantially V-shaped on both the left and right side surfaces as in the first embodiment, and the entire cross section is substantially W-shaped. An example of a configuration having a formed side reinforcing portion 71 and being bilaterally symmetric but not vertically symmetric is given, and apex is on a plane perpendicular to the plane portion 22a of the load beam 22 including the center line 24 in the longitudinal direction. The dimple 28 having 27 is formed, and the position of the apex 27 is described so as to be matched with the perpendicular bisector of the line connecting the apexes of the two pivots 25 that become the neutral axis (line 31) of the twist. The head support device according to the second embodiment of the present invention is not limited to this example. The position of the apex 27 of the dimple 28 is such that the dimple 28 is formed on the flat surface portion 22 a of the load beam 22. In the kill where, may be set to a position that matches the shear center of each cross section parallel to the cross-section and its cross-section of the load beam 22. At this time, the neutral axis of the twist is on a plane passing through the vertexes of the two pivots 25 and the vertex 27 of the dimple 28, and the midpoint of the line connecting the vertexes of the two pivots 25 and the vertex 27 of the dimple 28. And the line 31 passing through. Furthermore, the line 31 does not have to be a straight line and may be a gentle curve. In this case, it goes without saying that at least the cross section of the load beam 22 is not symmetric with respect to the longitudinal centerline 24 thereof. However, at this time, the cross section of the load beam 22 and the shear center of each cross section parallel to the cross section are the tops of the two pivots 25 provided on the load beam 22 so as to contact the carriage 4 and the dimples 28 of the load beam 22. It is on a plane passing through the three points of the vertex 27 and on a line 31 passing through the midpoint of the line connecting the vertices of the two pivots 25. Although this line 31 is not a perpendicular bisector of the line connecting the vertices of the two pivots 25, the vertex 27 of the dimple 28 can be matched with the neutral axis of the torsion of the load beam 22.

  Furthermore, by mounting such a head support device, it is possible to improve the head positioning control characteristics, move the magnetic head to the target track position at high speed, and realize a disk device with greatly shortened access time. be able to.

(Embodiment 3)
FIG. 10 is a view for explaining the head support device according to the third embodiment of the present invention. FIG. 10 (a) is a side view showing the main part of the head support device in a broken section, and FIG. (B) is the partial expanded side view which expanded the principal part of Fig.10 (a). 10, elements corresponding to those in FIG. 2A and FIG. 3 of the first embodiment are denoted by the same reference numerals as those in FIG. 2A and FIG. Similarly to the first embodiment, a magnetic recording / reproducing apparatus will be described below as an example of the disk apparatus. The third embodiment is different from the first embodiment in that dimples are not formed in the load beam that abuts the gimbal portion of the flexure to which the slider is attached, and the dimples are provided in the gimbal portion of the flexure where the slider is arranged. This is the point formed.

  In FIG. 10, the difference from FIGS. 2A, 3 and 4 in the first embodiment is that the load beam 22 has no dimple 28 and the flexure 21 to which the slider 3 is attached is provided with the dimple 28. In other words, the vertex 27 of the dimple 28 is in contact with the surface of the load beam 22 on the slider 3 side. In addition, the carriage 4, the load beam 22, and the slider 3 are arranged so that the vertex 27 of the dimple 28 of the slider 3 is on the perpendicular bisector of the line connecting the respective vertices of the two pivots 25 of the carriage 4. ing. Other configurations are the same as those in the first embodiment and the second embodiment described above, and detailed description thereof is omitted here.

  The neutral axis of the torsion of the load beam 22 as in the first embodiment of the head support device configured as described above, that is, the shear center of the cross section in each part of the load beam 22, or the centroid of the carriage 4 It is on a plane that includes the vertexes of the two pivots 25 and the vertex 27 of the dimple 28 of the slider 3, and is on a line 31 that passes through the midpoint of the line that connects the vertexes of the two pivots 25 of the carriage 4. Thus, the shape of the side reinforcement part in each part of the load beam 22 is set. Here, since the plate thickness of the plane portion of the load beam 22 is very thin, the load beam 22 is on a plane including the vertexes of the two pivots 25 of the carriage 4 and the vertex 27 of the dimple 28 of the slider 3. The perpendicular bisector of the line connecting the vertices of the individual pivots 25 substantially coincides with the longitudinal center line of the load beam 22.

  The head support device having such a configuration and the disk device including the head support device have the same effects as those of the first embodiment and the second embodiment described above, and detailed description of the effects is redundant. Omitted to avoid.

  In the third embodiment, it is needless to say that the two pivots 25 may be provided on the load beam 22 as in the second embodiment, and detailed description thereof is omitted here. To do.

  Also in the description of the head support device according to the third embodiment of the present invention described above, the load beam 22 is substantially V-shaped on both the left and right side surfaces as in the first and second embodiments, and the entire cross section thereof. On the surface perpendicular to the plane portion of the load beam 22 including the center line in the longitudinal direction, using an example of a configuration having a side reinforcing portion formed in a substantially W shape and symmetrical in the left-right direction but not in the vertical direction The dimple 28 having the apex 27 is formed on the axis, and the position of the apex 27 is described so as to be matched with the perpendicular bisector of the line connecting the vertices of the two pivots 25 serving as the neutral axis (line 31) of the twist. The head support device according to the third embodiment of the present invention is not limited to this example, and the position of the apex 27 of the dimple 28 can form the dimple 28 in the plane portion of the load beam 22. In the Rutokoro it may be set to a position that matches the shear center of each cross section parallel to the cross-section and its cross-section of the load beam 22. Needless to say, this configuration has the same effect.

  Even in the load beam 22 provided in the head support device according to the third embodiment of the present invention, an opening is provided in the plane portion of the load beam 22 to reduce the weight and size, and to improve the resonance characteristics of the load beam 22. Can be adjusted. Needless to say, the shape and arrangement of the opening can be the same as those described in the first embodiment.

  As described above, according to the third embodiment, the same effect as in the first and second embodiments described above is obtained, and the resonance characteristics of the load beam are stabilized even if the setting height of the load beam varies. The position of the slider does not change even with torsional vibration, the head positioning control characteristics can be improved, and the access time for moving the magnetic head to the target track can be shortened. .

  In addition, for example, an opening formed with a hole can be provided in a part of the load beam, or the load beam can be formed using a thin plate, thereby realizing a head support device that is reduced in weight and size. it can.

  Furthermore, by mounting such a head support device, it is possible to improve the head positioning control characteristics, move the magnetic head to the target track position at high speed, and realize a disk device with greatly shortened access time. be able to.

(Embodiment 4)
11, 12 and 13 are diagrams for explaining a head support device of a disk device according to Embodiment 4 of the present invention. FIG. 11 is a side view showing a head support device of a disk device according to Embodiment 4 together with a part of a disk such as a magnetic recording medium. FIG. 12A is a perspective view of a main part for showing a schematic configuration of the head support device in the fourth embodiment, and FIG. 12B is a main part for showing a schematic configuration of the head support device in the fourth embodiment. FIG. FIG. 13 is a side view showing the main part of the head support device according to the fourth embodiment in a broken surface. 11, FIG. 12, and FIG. 13 correspond to FIG. 1, FIG. 2, and FIG. 3, respectively, used for the description in the first embodiment, and correspond to the components in FIG. 1, FIG. 2, and FIG. Elements are given the same reference numerals. Similarly to the first embodiment described above, a magnetic recording / reproducing apparatus will be described below as an example of the disk device. However, the same contents as those of the first embodiment will not be described in detail to avoid duplication. , Mainly focusing on different points.

  As shown in FIGS. 11 and 12, the head support device 2 according to the fourth embodiment of the present invention has a slider 3 mounted with a magnetic head (not shown) at one end, and is made of a thin metal plate such as SUS. An elastic member 23 made of, for example, a leaf spring is formed on a part of a load beam 22 to which a flexure 21 having a gimbal portion 20 integrally formed with a flexible wiring board is fixed. An open end of the elastic member 23 is a carriage. 4 is fixed by a known method such as spot welding, ultrasonic welding, or laser welding. The elastic member 23 may be a separate member different from the load beam 22. Further, the carriage 4 is provided with two pivots 25 at positions that are symmetrical with respect to the center line in the longitudinal direction. Therefore, the rotating portion (the portion excluding the elastic member 23) of the load beam 22 is pushed up against the elastic force of the elastic member 23 of the load beam 22 fixed to the carriage 4, and the two pivots 25 are used as a center. The slider 3 is urged toward the magnetic recording medium 1 so that the slider 3 disposed on the load beam 22 presses the surface of the magnetic recording medium 1. Yes. Further, a balancer 26 is fixed to the end of the load beam 22 on the side opposite to the slider 3 side, and the rotating portion of the load beam 22, the flexure 21 to which the slider 3 is attached, and the balancer 26 in the direction of the magnetic recording medium 1. The center of gravity is on a line connecting the vertices of the two pivots 25 of the carriage 4, and this line serves as a rotation axis and is on a plane perpendicular to the magnetic recording medium 1 including the rotation axis. ing. As a result, when an impact from the outside is received, the force for rotating the load beam 22 around the rotation axes connecting the respective vertices of the two pivots 25 of the carriage 4 does not work, and the slider 3 performs magnetic recording. It does not hit the surface of the medium 1 and cause damage.

  Further, a dimple 28 having a vertex 27 is formed on the surface of the load beam 22 facing the slider 3 on a surface perpendicular to the plane portion 22a of the load beam 22 including the center line 24 in the longitudinal direction. , A load beam 22 that supports the slider 3 in a swingable manner is connected via a flexure 21. Since the load beam 22 and the slider 3 are in contact directly or via the flexure 21 by the apex 27 of the dimple 28, the slider 3 can freely move along the movement of the surface of the rotating magnetic recording medium 1. it can. A center line 24 in the longitudinal direction of the load beam 22 is set so as to pass through a rotation center where the load beam 22 is rotated by the action of a voice coil (not shown) provided on the carriage 4 or the like. Further, the apex 27 of the dimple 28 may directly contact the slider 3 instead of supporting the slider 3 via the flexure 21.

  These configurations are the same as those in the first embodiment. However, the head support device 2 included in the disk device according to the fourth embodiment of the present invention differs from the first embodiment in the structure of the load beam 22 and the flexure 21. As is apparent from FIG. 14 shown as a cross-sectional view taken along a plane perpendicular to the center line 24 and passing through the apex 27 of the dimple 28 in FIGS. 12A and 12B, the fourth embodiment of the present invention. The head support device 2 includes a load beam 22 and a flexure 21 having side reinforcement portions 41a and 41b formed on almost all side surfaces of the left and right side surfaces, and a cross-section of the U-shaped cross section. Then, the U-shaped load beam 22 and the outer side surfaces of the main portions other than the side reinforcing portions 41a and 41b of the flexure 21 are fixed to each other in contact with each other, so that the overall cross-sectional shape is an H-shaped structure. Is formed.

  The side reinforcing portions 41a and 41b formed in a U shape on both side surfaces of the load beam 22 and the flexure 21 may be formed by bending or other members may be integrally formed. The side reinforcing portions 41a and 41b may not be formed over the entire side surface, but may be formed at a portion extending from the slider 3 side end portion to at least the periphery of the elastic member 23 opposite to the slider 3 side end portion. By forming such side reinforcing portions 41a and 41b, the rigidity of the load beam 22 becomes very large. Therefore, as shown in the perspective view of the schematic configuration of the main part of the head support device in FIG. A plurality of openings 29 are provided in the flat portion 22a of the load beam 22, or an opening 51 formed of a hole in the longitudinal direction is provided in the center of the flat portion 22a of the load beam 22 as shown in FIG. In addition to reducing the weight, the resonance characteristics of the load beam 22 may be adjusted. In addition, since the side reinforcing portions 41a and 41b are provided in the vicinity of the elastic member 23, the rigidity of the load beam 22 is increased, and the load beam 22 is shaken up and down in the direction of the magnetic recording medium 1 due to impact or vibration. As a result, rolling due to rolling or twisting along the surface of the magnetic recording medium 1 is suppressed, so that the load beam 22 can be formed of a thin plate or the like, and weight reduction and downsizing can also be realized.

  In addition, as an example of the shape and arrangement of the openings 29 and 51 provided in the flat portion 22a of the load beam 22, the opening 29 including a plurality of holes in the flat portion 22a of the load beam 22 in FIG. Although the opening 51 formed of a hole in the longitudinal direction is shown at the center of the flat surface portion 22a of the load beam 22, the shape and arrangement of the openings 29 and 51 are not limited to these examples. It is possible to use various shapes and arrangements as exemplified in the same manner as described in the first embodiment.

  In general, when the head support device 2 moves the magnetic head to a target track position at high speed, even if torsional vibration occurs in the load beam 22, the slider 3 and the apex 27 of the dimple 28 of the load beam 22 that contacts the slider 3. If the positional relationship is stationary, off-track is not generated by the generated torsional vibration, and the access time to the target track position can be shortened. It has already been described in the first embodiment that the positions of the apexes 27 of 28 need to coincide with the neutral axis of the torsion of the load beam 22. The position of the apex 27 of the dimple 28 is where the dimple 28 can be formed on the plane portion 22a of the load beam 22, and matches the cross section of the load beam 22 and the shear center of each cross section parallel to the cross section. The neutral axis of the twist is on a plane passing through the vertexes of the two pivots 25 and the vertexes 27 of the dimples 28, and the midpoint of the line connecting the vertexes of the two pivots 25 and the dimples 28 It has also been described that it coincides with the line 31 passing through the apex 27 of.

  In the head support device 2 provided in the disk device according to the fourth embodiment of the present invention, the side reinforcing portions 41a and 41b are provided on the left and right side surfaces, respectively, and the load beam 22 having a U-shape and the main portion of the flexure 21, respectively. The outer surfaces of the two are in contact with each other and formed into a structure having an overall H-shaped cross section, and the cross section has symmetry in the vertical and horizontal directions. In addition, the centroid of the dimple 28 may be aligned with the centroid, not the shear center of the cross section of the H-shaped structure united with the flexure 21.

  Therefore, in the head support device 2 provided in the disk device according to the fourth embodiment of the present invention, the head support device 2 is on a plane passing through the three points of the apexes of the two pivots 25 of the carriage 4 and the apex 27 of the dimple 28 of the load beam 22. And a line (see FIG. 12) that passes through the midpoint of the line connecting the vertices of the two pivots 25 and is perpendicular to the line connecting the vertices of the two pivots 25 (see FIG. 12) becomes the neutral axis of torsion of the load beam 22. In order to make the cross section of the load beam 22 and the centroid of each cross section of the load beam 22 parallel to the cross section in line, The shape of the side reinforcement parts 41a and 41b is set. In the load beam 22 having the side reinforcing portions 41a and 41b designed in this way, the apex 27 of the dimple 28 of the load beam 22 moves even if torsional vibration occurs as shown by a broken line in FIG. Therefore, even if the magnetic head is moved to the target track position at high speed, off-track does not occur, and the access time to the target track position can be shortened.

  With this configuration, the rigidity of the load beam 22 can be greatly increased by the side reinforcing portions 41a and 41b, and the position of the apex 27 of the dimple 28 of the load beam 22 is made to coincide with the neutral axis of the torsion of the load beam 22. Therefore, even if the setting height of the load beam 22, that is, the distance between the carriage 4 and the magnetic recording medium 1 is varied due to manufacturing variations, it is not affected by shocks due to disturbances, vibrations or vibrations due to the seek operation of the magnetic head. Thus, the resonance characteristics of the load beam 22 can be stabilized, higher-order torsional resonance can be reduced, and off-track can be made difficult to occur.

  Needless to say, the head support device configured as described above can be applied to all head support devices including the head support device facing the upper surface side of the magnetic recording medium. It is possible to realize a disk device that can be moved to a track position at a high speed and the access time is greatly shortened. Therefore, even if the setting height of the load beam varies, the resonance characteristics of the load beam can be stabilized, and the position of the slider does not change with respect to torsional vibration. Can be improved.

  Further, in the head support device according to the fourth embodiment of the present invention, the configuration described in the second embodiment, that is, as shown in FIGS. It is also possible to adopt a configuration in which two pivots are formed at positions where left and right are symmetrical with respect to the center line in the longitudinal direction of the beam.

  15 and 16 are diagrams for explaining another example of the configuration of the head support device according to the fourth embodiment of the present invention, that is, the same configuration as that of the second embodiment. FIG. 15 is a side view showing the main part of the head support device with a broken surface, and FIG. 16 is a perspective view of the load beam as seen from the slider mounting surface side. 15 and FIG. 16, the same reference numerals are given to the elements corresponding to the constituent elements in FIG. 8 and FIG. 9 of the second embodiment. In the head support device having this configuration, the load beam 22 and the flexure 21 have side reinforcing portions 41a and 41b formed on almost all sides of the left and right side surfaces, and have a U-shaped cross section. The outer surface of each of the main portions other than the side reinforcing portions 41a and 41b of the flexure 21 and the load beam 22 having a letter shape is fixed in contact with each other to form a structure having a generally H-shaped cross section. ing. In this way, the side reinforcement portions 41a and 41b are formed and the load beam 22 and the flexure 21 having a U-shaped shape are different from the second embodiment, and other configurations and operations as a head support device are provided. Since the effect is the same as that of the second embodiment, the description is omitted to avoid duplication.

  Further, in the head support device according to the fourth embodiment of the present invention, as shown in the above-described third embodiment, that is, as shown in FIG. 10, the dimple is applied to the load beam that contacts the gimbal portion of the flexure to which the slider is attached. It is also possible to adopt a configuration in which the dimples are formed in the gimbal portion of the flexure with which the slider is disposed without forming the slider. Also in the head support device of this configuration, the resonance characteristics of the load beam 22 can be stabilized against impact, vibration, etc., higher-order torsional resonance can be reduced, and the effect of making it difficult to cause off-track changes. Of course not.

  In addition, an opening having a hole formed in a part of the load beam can be provided, or the load beam can be formed using a thin plate, and a head support device that is reduced in weight and size can be realized.

  Furthermore, by mounting such a head support device, it is possible to improve the head positioning control characteristics, move the magnetic head to the target track position at high speed, and realize a disk device with greatly shortened access time. be able to.

(Embodiment 5)
17 and 18 are diagrams for explaining the head support device of the disk device according to the fifth embodiment of the present invention. FIG. 17A is a perspective view of a main part for showing a schematic configuration of the head support device in the fifth embodiment, and FIG. 17B is a main view for showing a schematic configuration of the head support device in the fifth embodiment. It is a disassembled perspective view of a part. 18 is a cross-sectional view of the load beam 22 shown as a cross section in a plane perpendicular to the center line 24 and passing through the apex 27 of the dimple 28 in FIG. The fifth embodiment of the present invention is different from the above-described first to fourth embodiments in that the resin is outserted to the side reinforcing portions 161 at both end portions of the load beam 22. With this configuration, the load beam 22 can be significantly reduced in weight, and the resonance frequency can be increased. Further, when the neutral axis of the torsion of the load beam 22 coincides with the line connecting the midpoint of the line connecting the tops of the pair (two) pivots 25 of the carriage 4 and the apex 27 of the dimple 28, side reinforcement is performed by resin molding. There is an effect that the rib shape of the portion 161 can be designed more freely. Furthermore, the planar shape of the load beam 22 can be designed to a shape other than the trapezoid, and the load beam 22 can be further reduced in weight.

  Also, by mounting such a head support device, it is possible to improve the head positioning control characteristics, move the magnetic head to the target track position at high speed, and realize a disk device with greatly shortened access time. be able to.

  In the first to fifth embodiments of the present invention described above, the head support device of the magnetic recording / reproducing apparatus using the magnetic head has been described. However, a non-contact type disk recording / reproducing apparatus, for example, an optical disk device, is described. Needless to say, the same effect can be obtained when used as a head support member or head support device such as a magneto-optical disk device.

  The head support device and the disk device using the head support device according to the present invention abut the load beam and the carriage via two pivots, and abut the slider attached to the flexure via the dimple and the load beam. In addition, the slider on which the magnetic head is mounted is pressed against the magnetic recording medium, and at least the shear center of the cross section of the load beam by a plane perpendicular to the magnetic recording medium passing through the top of the dimple (the cross section is symmetrical vertically and horizontally). When the head is moved to the target track at high speed, the structure is provided with side reinforcements on both side edges of the load beam. Even for torsional vibrations, the rigidity of the load beam is increased to improve the resonance frequency characteristics. The position of the top of the dimple does not move with respect to the number, and therefore there is no off-track, and it is possible to realize a head support device corresponding to a high access speed. Furthermore, the setting height of the load beam varies. Even if this occurs, the resonance characteristics of the load beam can be stabilized, and the position of the slider does not change with respect to torsional vibrations, and the head positioning control characteristics can be improved. It is possible to increase the access speed to move to the track and shorten the access time. Furthermore, by installing such a head support device, the head positioning control characteristics are improved and the head is targeted. Can be moved to the track position at high speed, and the access time is greatly shortened and the reliability is high It becomes possible to realize a disk apparatus, a magnetic disk device having a floating type signal conversion element such as a magnetic head or an optical head, it can be applied to a disk recording apparatus such as an optical disk device and magneto-optical disk device.

1 is a side view showing a part of a disk and a head support device of a disk device according to a first embodiment of the present invention. (A) is a perspective view of the principal part for showing schematic structure of the head support apparatus in Embodiment 1 of this invention, (b) is for showing schematic structure of the head support apparatus in Embodiment 1 of this invention. Exploded perspective view of the main part of The side view which made the principal part of the head support apparatus in Embodiment 1 of this invention the fracture surface Sectional drawing of the load beam made into the cross section in the plane which passes along the vertex of the dimple in the head support apparatus of Embodiment 1 of this invention The perspective view which shows another example of the load beam in the head support apparatus of Embodiment 1 of this invention. The top view which shows the example of the shape of the opening part which can be provided in the plane part of the load beam in the head support apparatus of Embodiment 1 of this invention, and an arrangement | positioning The perspective view which shows the structure of the disc apparatus provided with the head support apparatus in Embodiment 1 of this invention. The side view which showed the principal part of the head support apparatus in Embodiment 2 of this invention with the torn surface. The perspective view of the load beam seen from the slider attachment surface side of the head support apparatus in Embodiment 2 of this invention FIG. 10A is a side view showing the main part of the head support device according to the third embodiment of the present invention in a broken section, and FIG. 10B is a partially enlarged view of the main part of the head support device in FIG. Side view Side view showing a part of a head support device and a disk of a disk device according to Embodiment 4 of the present invention. (A) is a perspective view of the principal part for showing schematic structure of the head support apparatus in Embodiment 4 of this invention, (b) is for showing schematic structure of the head support apparatus in Embodiment 4 of this invention. Exploded perspective view of the main part of The side view which made the principal part of the head support apparatus in Embodiment 4 of this invention the fracture surface Sectional drawing of the load beam cut | disconnected by the plane which passes along the vertex of the dimple of the head support apparatus in Embodiment 4 of this invention The side view which showed the principal part of the another head support apparatus in Embodiment 4 of this invention with the torn surface. The perspective view of the load beam seen from the slider attachment surface side of another head support device in Embodiment 4 of the present invention. (A) is a perspective view of a main part for showing a schematic configuration of a head support device according to Embodiment 5 of the present invention, and (b) shows a schematic configuration of the head support device according to Embodiment 5 of the present invention. Exploded perspective view of the main part of Sectional drawing of the load beam cut | disconnected by the plane which passes along the vertex of the dimple of the head support apparatus in Embodiment 5 of this invention A plan view showing a configuration of a main part of a conventional magnetic recording / reproducing apparatus Main part perspective view for demonstrating the structure of the conventional head support apparatus, and its effect | action.

Explanation of symbols

1, 62, 106 Magnetic recording medium 2, 64, 101 Head support device 3, 105 Slider 4, 104 Carriage 5, 108 Driving means (voice coil)
6, 109 Second bearing portion 20 Gimbal portion 21 Flexure 22, 102 Load beam 22a Plane portion 23, 103 Elastic member 24 Center line 25 Pivot 26 Balancer 27 Vertex 28 Dimple 29, 51 Opening 31 line (neutral axis)
41, 41a, 41b, 71, 161 Side reinforcement 61, 107 Spindle motor 63, 108 Voice coil 65 Magnetic recording / reproducing device 111 Notch A Arrow

Claims (3)

Head,
A load beam supporting the head;
A bearing provided between the load beam and the carriage and rotatable in a direction perpendicular to the recording medium;
An elastic member connecting the load beam and the carriage;
A side reinforcement provided on the load beam;
Have
The side reinforcing portions are formed by bending each side edge of the load beam,
A member having a substantially U-shaped cross-sectional shape is bonded to a cross-section perpendicular to the center line in the longitudinal direction of the load beam, so that the entire cross-sectional shape is substantially H-shaped. Head support device. Head,
A load beam supporting the head;
Dimples provided on the load beam;
A bearing portion provided between the load beam and the carriage and rotatable in a direction perpendicular to the recording medium;
An elastic member connecting the load beam and the carriage;
A side reinforcement provided on the load beam;
Have
The side reinforcing portions are formed by bending each side edge of the load beam,
A member having a substantially U-shaped cross-sectional shape is bonded to a cross-section perpendicular to the center line in the longitudinal direction of the load beam, so that the entire cross-sectional shape is substantially H-shaped. Head support device. Wherein a bearing portion of two pivots, according to claim 2, characterized in that it comprises an apex vertically bisector of a line connecting the dimples top of each of the pivot provided on said load beam Head support device.

Images