Suspension for disk drives

Abstract

To provide a suspension for a disk drive that can reduce crosstalk in the wiring section. [Solution] The suspension 10A has a first actuator (piezoelectric elements 30R, 30L), a second actuator (piezoelectric element 40R), and a third actuator (piezoelectric element 40L). The first conductor 33 supplies a first alternating current to the first actuator. The second conductor 41 supplies a second alternating current to the second actuator. The third conductor 42 supplies a third alternating current to the third actuator that is in the opposite phase to the second alternating current. The first conductor 33 has a first proximity portion 45 and a second proximity portion 46. The first proximity portion 45 extends along the second conductor 41 in the longitudinal direction of the wiring portion 21. The second proximity portion 46 extends along the third conductor 42 in the longitudinal direction of the wiring portion 21.

Description

Technical Field

[0001] The present invention relates to a suspension for a disk device including a plurality of actuators such as piezoelectric elements.

Background Art

[0002] A hard disk drive (HDD) is used in an information processing apparatus. Hereinafter, the hard disk drive is referred to as a disk device. The disk device includes a magnetic disk that rotates around a spindle, a carriage that pivots around a pivot axis, and the like. A suspension for a disk device is provided on an arm of the carriage. Hereinafter, the suspension for a disk device is simply referred to as a suspension.

[0003] The suspension includes a base plate, a load beam, a flexure disposed along the load beam, and the like. A slider is provided on a gimbal portion formed near the tip of the flexure. An element for accessing data recorded on the disk, such as reading and writing, is provided on the slider.

[0004] In order to increase the recording density of the disk, it is necessary to be able to position the magnetic head at a higher speed and with higher accuracy with respect to the recording surface of the disk. For this reason, a suspension equipped with a coarse movement actuator and a fine movement actuator has been developed. As a fine movement actuator, a piezoelectric element that operates according to a voltage is known.

[0005] For example, the suspension described in Patent Document 1 has an actuator mounted near the base plate of the suspension. The suspension described in Patent Document 2 has a fine movement actuator mounted on the gimbal portion. A suspension including a coarse movement actuator and a fine movement actuator is also known.

[0006] A multi-stage actuator type suspension is also known, which includes an actuator located at a first position on the suspension and an actuator located at a second position. For example, a suspension is also known that has a first actuator located at a first position (near the base plate) with respect to the longitudinal direction of the suspension, and a second actuator and a third actuator located at a second position (near the tip of the suspension) on the suspension.

[0007] The first actuator receives an alternating current for driving through the first conductor of the wiring section. The second actuator and the third actuator each receive alternating currents with opposite phases through the second and third conductors of the wiring section, respectively. These second and third actuators form a pair. Therefore, the second and third conductors also form a pair. For this reason, in conventional wiring sections, the second and third conductors are usually arranged adjacent to each other on one side of the first conductor.

[0008] To ensure that the suspension functions correctly, it is necessary to accurately understand its vibration characteristics. Therefore, tests were conducted to measure the vibration characteristics of the suspension. In these vibration characteristic tests, it is possible to make the suspension itself vibrate by supplying excitation signals to, for example, the second and third actuators.

[0009] Depending on the specifications of the disk drive, a first suspension facing a first surface of a disk and a second suspension facing a second surface of the disk may be provided. The first suspension is positioned so that the air bearing surface of the slider faces the first surface (e.g., the front surface) of the disk. The second suspension is positioned so that the air bearing surface of the slider faces the second surface (e.g., the back surface) of the disk. The first and second suspensions are mirror-symmetrical with respect to the disk.

[0010] Therefore, in vibration tests, if the excitation signal supplied to the first suspension and the excitation signal supplied to the second suspension are the same, then the vibration waveforms of the first suspension and the second suspension should be the same. However, after diligent research by the inventors, cases were observed where the vibration waveforms of the first suspension and the second suspension did not match. [Prior art documents] [Patent Documents]

[0011] [Patent Document 1] Japanese Patent Publication No. 2013-246840 [Patent Document 2] Japanese Patent Publication No. 2014-22015 [Overview of the project] [Problems that the invention aims to solve]

[0012] The inventors diligently studied the reasons why the vibration waveforms of the first suspension and the second suspension differed. For example, when an excitation signal was supplied to the second and third conductors of the wiring section, crosstalk was detected in the first conductor, which was not excited. It was found that this crosstalk was the reason why the vibration waveforms of the first and second suspensions differed. Since crosstalk can affect the operation of the actuator, it was desirable to suppress it.

[0013] The object of the present invention is to provide a suspension for a disk drive equipped with multiple actuators that can suppress crosstalk in the wiring section. [Means for solving the problem]

[0014] One embodiment is a suspension for a disk drive having a first actuator positioned in a first location, a second actuator and a third actuator positioned in a second location, and a wiring section. The wiring section includes a first conductor, a second conductor, and a third conductor. The first conductor is electrically connected to the first actuator and supplies a first alternating current to the first actuator. The second conductor is electrically connected to the second actuator and supplies a second alternating current to the second actuator. The third conductor is electrically connected to the third actuator and supplies a third alternating current to the third actuator, which is in the opposite phase to the second alternating current. The first conductor has a first proximity section and a second proximity section. The first proximity section is positioned closer to the second conductor than the third conductor and extends along the second conductor in the longitudinal direction of the wiring section. The second proximity section is positioned closer to the third conductor than the second conductor and extends along the third conductor in the longitudinal direction of the wiring section.

[0015] As shown in Figure 5, the first conductor may be positioned between the second conductor and the third conductor. The first conductor has a first proximity portion that extends along the second conductor in the longitudinal direction of the wiring portion, and a second proximity portion that extends along the third conductor in the longitudinal direction of the wiring portion.

[0016] As shown in Figure 8, the second conductor and the third conductor may be arranged adjacent to each other. The first conductor has a first energized section and a second energized section. The first energized section is located outside the second conductor and extends along the second conductor in the longitudinal direction of the wiring section. This first energized section has the first proximity section. The second energized section is located outside the third conductor and extends along the third conductor in the longitudinal direction of the wiring section. This second energized section has the second proximity section. The first energized section and the second energized section may be connected to each other by a jumper conductor.

[0017] As shown in FIG. 9, the first conductor may be disposed between the second conductor and the third conductor. The first conductor has a first energization section and a second energization section. The first energization section extends along the second conductor in the length direction of the wiring section and has the first proximity section. The second energization section extends along the third conductor in the length direction of the wiring section and has the second proximity section.

[0018] As shown in FIG. 10, the first conductor may have a first energization section and a second energization section. In this case, the first energization section is disposed outside the second conductor and extends along the second conductor in the length direction of the wiring section. The first energization section has the first proximity section. Also, the second energization section is disposed between the second conductor and the third conductor and extends along the third conductor in the length direction of the wiring section. The second energization section has the second proximity section. The first energization section and the second energization section may be connected by a jumper conductor.

Advantages of the Invention

[0019] According to one embodiment, in a suspension for a disk device including a plurality of actuators and a wiring section that supplies drive signals to these actuators, crosstalk generated in the wiring section can be suppressed.

Brief Description of the Drawings

[0020] [Figure 1] Perspective view showing an example of a disk device. [Figure 2] Cross-sectional view schematically showing the disk device. [Figure 3] Planar view showing an example of a first suspension according to the first embodiment. [Figure 4] Planar view schematically showing the first suspension shown in FIG. 3. [Figure 5] Planar view schematically showing a part of the wiring section of the first suspension. [Figure 6] Diagram showing the relationship between the drive signal and the crosstalk voltage of the first suspension. [Figure 7] Plan view schematically showing the second suspension according to the first embodiment. [Figure 8] Plan view schematically showing a part of the wiring section according to the second embodiment. [Figure 9] Plan view schematically showing a part of the wiring section according to the third embodiment. [Figure 10] Plan view schematically showing a part of the wiring section according to the fourth embodiment.

Mode for Carrying Out the Invention

[0021] [First Embodiment] Hereinafter, the first suspension 10A and the second suspension 10B according to the first embodiment will be described with reference to FIGS. 1 to 7. FIG. 1 is a perspective view showing an example of a hard disk drive (HDD) 1. Hereinafter, the hard disk drive will be simply referred to as a disk drive. FIG. 2 is a cross-sectional view schematically showing the disk drive 1. The disk drive 1 has a case 2, a disk 4 that rotates around a spindle 3, a carriage 6, a positioning motor 7, and the like. The carriage 6 pivots around a pivot axis 5. The motor 7 pivots the carriage 6. The case 2 is sealed by a lid (not shown).

[0022] As shown in FIG. 2, the first suspension 10A is attached to the first surface of each arm 6a of the carriage 6. The second suspension 10B is attached to the second surface of the arm 6a (the surface opposite to the first surface). The first suspension 10A and the second suspension 10B face each other with the disk 4 interposed therebetween.

[0023] Figure 3 is a plan view showing an example of the first suspension 10A. Figure 4 is a schematic plan view of the first suspension 10A. The first suspension 10A includes a base plate 11, a load beam 12, a flexure 13, an actuator mounting section 14 located at a first position, and an actuator mounting section 15 located at a second position.

[0024] In this specification, the first position is a position close to the base plate 11 with respect to the length of the suspension 10A. The second position is near the tip of the suspension 10A. The base plate 11 and the load beam 12 are made of, for example, stainless steel plates. A circular boss portion 16 is formed on the base plate 11. The boss portion 16 is fixed to the arm 6a of the carriage 6 (shown in Figure 2).

[0025] The flexure 13 includes a metal base 20 and a wiring section 21. Figure 5 is a schematic plan view showing a portion of the wiring section 21. In Figures 4 and 5, the direction indicated by the double-headed arrow Y is the longitudinal direction of the wiring section 21. The metal base 20 is made of a stainless steel plate that is thinner than the load beam 12. The wiring section 21 is arranged along the metal base 20.

[0026] A swingable gimbal section 25 is formed near the tip of the flexi-sha 13. A slider 26, which functions as a magnetic head, is mounted on the gimbal section 25. The slider 26 is equipped with elements for magnetically recording data onto the disk 4 and elements for reading the data recorded on the disk 4.

[0027] A pair of piezoelectric elements 30R and 30L, serving as the first actuator, are positioned in the actuator mounting section 14 at the first position. The piezoelectric elements 30R and 30L are made of materials such as PZT (lead zirconate titanate). Although the piezoelectric elements 30R and 30L have a common configuration, they are positioned in the actuator mounting section 14 with their polarities (positive and negative) reversed.

[0028] In Figures 3 and 4, the first conductor 33 of the wiring section 21 is connected to one electrode of the piezoelectric element 30R located on the right side via terminal 31. The other electrode of the piezoelectric element 30R is electrically connected to a metal part (e.g., base plate 11) that constitutes the ground-side circuit of the first suspension 10A.

[0029] In Figures 3 and 4, the first conductor 33 is connected to one electrode of the piezoelectric element 30L located on the left side via terminal 32. The other electrode of the piezoelectric element 30L is in electrical contact with the metal part that constitutes the ground-side circuit of the first suspension 10A. A first alternating current is supplied to these piezoelectric elements 30R and 30L through the terminal portion 33a (shown in Figure 4) of the first conductor 33.

[0030] When a first alternating current is supplied to piezoelectric elements 30R and 30L, piezoelectric elements 30R and 30L expand and contract in opposite directions. This allows the tip of the first suspension 10A to move by a small amount in the sway direction (indicated by the double-headed arrow A1 in Figure 3). For example, when piezoelectric element 30R contracts and piezoelectric element 30L expands, the tip of the first suspension 10A moves in a first direction. When piezoelectric element 30R expands and piezoelectric element 30L contracts, the tip of the first suspension 10A moves in a second direction. In this specification, "movement of the suspension tip" means that the position of the element (read / write element) provided on the slider 26 moves in a first direction or a second direction, etc.

[0031] A piezoelectric element 40R, acting as a second actuator, and a piezoelectric element 40L, acting as a third actuator, are arranged in the actuator mounting section 15 at the second position. The piezoelectric elements 40R and 40L are made of PZT or the like.

[0032] In Figures 3 and 4, the second conductor 41 of the wiring section 21 is connected to one electrode of the piezoelectric element 40R located on the right side. The other electrode of the piezoelectric element 40R is in conductivity with the ground circuit of the first suspension 10A. The second conductor 41 supplies a second alternating current to the piezoelectric element 40R through the terminal section 41a (shown in Figure 4). For illustrative purposes, the second conductor 41 is shown as hatched in Figures 4 and 5.

[0033] In Figures 3 and 4, the third conductor 42 of the wiring section 21 is connected to one electrode of the piezoelectric element 40L located on the left. The other electrode of the piezoelectric element 40L is in conductivity with the ground circuit of the first suspension 10A. The third conductor 42 supplies a third alternating current to the piezoelectric element 40L through the terminal section 42a (shown in Figure 4). The phase of the third alternating current is opposite to the phase of the second alternating current; that is, there is a phase difference of 180°. For explanatory purposes, the third conductor 42 is shown as a sandy texture in Figures 4 and 5. The length direction Y of the wiring section 21 is also the length direction of conductors 33, 41, and 42.

[0034] When a second alternating current is supplied to the second conductor 41 and a third alternating current is supplied to the third conductor 42, the piezoelectric elements 40R and 40L expand and contract. This allows the tip of the first suspension 10A to be moved by a small amount in the sway direction (indicated by the double-headed arrow A1 in Figure 3).

[0035] For example, when piezoelectric element 40R retracts and piezoelectric element 40L extends, the tip of the first suspension 10A, i.e., the position of the element (read / write element) provided on the slider 26, moves in a first direction. When piezoelectric element 40R extends and piezoelectric element 40L retracts, the tip of the first suspension 10A moves in a second direction. The stroke of these piezoelectric elements 40R and 40L as they extend and retract is smaller than the stroke of piezoelectric elements 30R and 30L in the first position.

[0036] As shown in Figures 4 and 5, the first conductor 33 is positioned between the second conductor 41 and the third conductor 42. An insulating portion 35 for electrical insulation is formed between the first conductor 33 and the second conductor 41. An insulating portion 36 for electrical insulation is formed between the first conductor 33 and the third conductor 42.

[0037] The first conductor 33 includes a first proximity portion 45 and a second proximity portion 46. The first proximity portion 45 is positioned closer to the second conductor 41 than the third conductor 42, and is located close to the second conductor 41. The first proximity portion 45 extends along the second conductor 41 in the longitudinal direction of the wiring portion 21.

[0038] The second proximity portion 46 is positioned closer to the third conductor 42 than the second conductor 41, and is located in close proximity to the third conductor 42. The second proximity portion 46 extends along the third conductor 42 in the longitudinal direction of the wiring portion 21. When the piezoelectric elements 40R and 40L are activated, alternating currents with opposite phases are supplied to the second conductor 41 and the third conductor 42.

[0039] The inventors focused on the crosstalk that occurs in the first conductor 33 when drive signals are supplied to the second conductor 41 and the third conductor 42. An oscilloscope 47 (shown in Figure 4) was used to detect this crosstalk. As shown in Figure 4, the first connection CH1 of the oscilloscope 47 is connected to the third conductor 42, and the second connection CH2 is connected to the first conductor 33. GND is the ground (signal ground).

[0040] A first alternating current was supplied to the second conductor 41 from signal source E1, and a second alternating current was supplied to the third conductor 42 from signal source E2. The first and second alternating currents were sine waves with an amplitude of 8V and a frequency of 1kHz, and a phase difference of 180°. Crosstalk occurring in the first conductor 33 was detected by oscilloscope 47.

[0041] Figure 6 shows the relationship between the drive signals V1 and V2 supplied to the piezoelectric elements 40R and 40L and the crosstalk voltage V3. As shown in Figure 6, the first alternating current (drive signal V1) and the second alternating current (drive signal V2) are in opposite phases and have a phase difference of 180°. As a result, the leakage currents of the drive signals V1 and V2 acted on the first conductor 33 in such a way that they canceled each other out, thereby suppressing crosstalk.

[0042] As shown in Figure 6, a small crosstalk voltage V3 was observed in the first conductor 33, but it was at a level that did not pose a practical problem. In contrast, in the conventional wiring section, a relatively large crosstalk voltage V4 was observed in the first conductor due to the influence of leakage current in a conductor close to the first conductor (for example, the second conductor).

[0043] To effectively suppress crosstalk, it is preferable that the lengths of the first proximity section 45 and the second proximity section 46 be the same. However, if a certain degree of crosstalk is practically acceptable, the lengths of the first proximity section 45 and the second proximity section 46 may be different. To suppress crosstalk to a level that does not pose a practical problem, for example, if the length of the first proximity section 45 is 1, the length of the second proximity section 46 should be between 0.5 and 1.5. More preferably, if the length of the first proximity section 45 is 1, the length of the second proximity section 46 may be between 0.8 and 1.2.

[0044] Figure 7 schematically shows the second suspension 10B. The second suspension 10B is configured to be mirror-symmetric to the first suspension 10A with respect to the disk 4 (shown in Figure 2). The configurations of the first suspension 10A and the second suspension 10B are substantially equivalent. Therefore, the second suspension 10B will be explained briefly.

[0045] The second suspension 10B shown in Figure 7 includes a base plate 51, a load beam 52, an actuator mounting section 54 located at a first position, an actuator mounting section 55 located at a second position, and a wiring section 61. The boss section 56 is fixed to the arm 6a of the carriage 6 (shown in Figure 2). A swingable gimbal section 65 is formed near the tip of the second suspension 10B. A slider 66 is mounted on the gimbal section 65.

[0046] Piezoelectric elements 70R and 70L, which serve as the first actuator, are arranged in the actuator mounting section 54 at the first position. In Figure 7, the first conductor 73 is connected to one electrode of the piezoelectric element 70R, which is located on the right side, via terminal 71 of the wiring section 61. The other electrode of the piezoelectric element 70R is electrically connected to the metal part that constitutes the ground-side circuit of the second suspension 10B.

[0047] In Figure 7, the first conductor 73 is connected to one electrode of the piezoelectric element 70L located on the left side via terminal 72 of the wiring section 61. The other electrode of the piezoelectric element 70L is electrically connected to the metal part that constitutes the ground-side circuit of the second suspension 10B.

[0048] The piezoelectric elements 70R and 70L have a common configuration, but, similar to the piezoelectric elements 30R and 30L in the first embodiment (shown in Figures 3 and 4), they are arranged on the actuator mounting section 54 with their polarities reversed. The first conductor 73 is connected to these piezoelectric elements 70R and 70L.

[0049] A piezoelectric element 80R, acting as a second actuator, and a piezoelectric element 80L, acting as a third actuator, are arranged in the actuator mounting section 55 at the second position. In Figure 7, the second conductor 81 is connected to the piezoelectric element 80R located on the right side. In Figure 7, the third conductor 82 is connected to the piezoelectric element 80L located on the left side.

[0050] A first conductor 73 is positioned between the second conductor 81 and the third conductor 82. The first conductor 73 includes a first proximity portion 45 and a second proximity portion 46, similar to the first conductor 33 in the first embodiment (shown in Figures 4 and 5). The first proximity portion 45 extends along the second conductor 81 in the longitudinal direction of the wiring portion 61. The second proximity portion 46 extends along the third conductor 82 in the longitudinal direction of the wiring portion 21.

[0051] When operating the piezoelectric elements 80R and 80L, alternating currents with opposite phases are supplied to the second conductor 81 and the third conductor 82 as a drive signal. Since alternating currents with opposite phases act on the first conductor 73, crosstalk occurring in the first conductor 73 can be suppressed.

[0052] [Second Embodiment] (Figure 8) Figure 8 is a schematic plan view of the wiring section 21A according to the second embodiment. Except for the wiring section 21A, the suspension can be the same as that described in the first embodiment. The wiring section 21A in this embodiment also has a first proximity section 45 and a second proximity section 46. The first proximity section 45 of the wiring section 21A is positioned closer to the second conductor 41 than to the third conductor 42. The first proximity section 45 extends along the second conductor 41 in the longitudinal direction of the wiring section 21A (indicated by the double-headed arrow Y). The second proximity section 46 is positioned closer to the third conductor 42 than to the second conductor 41 and extends along the third conductor 42 in the longitudinal direction of the wiring section 21A.

[0053] As shown in Figure 8, the second conductor 41 and the third conductor 42 are arranged adjacent to each other. An insulating section 100 for electrical insulation is formed between the second conductor 41 and the third conductor 42. The first conductor 33 has a first energized section 101 and a second energized section 102 in the longitudinal direction of the wiring section 21A (indicated by the double-headed arrow Y). The first energized section 101 is located outside the second conductor 41 and extends along the second conductor 41 in the longitudinal direction of the wiring section 21A. The first energized section 101 has a first proximity section 45.

[0054] The second energized section 102 is located outside the third conductor 42 and extends along the third conductor 42 in the longitudinal direction of the wiring section 21A. The second energized section 102 has a second proximity section 46. The first energized section 101 and the second energized section 102 are connected by a jumper conductor 103. An insulating section 104 is formed between the second conductor 41 and the first energized section 101. An insulating section 105 is formed between the third conductor 42 and the second energized section 102.

[0055] [Third Embodiment] (Figure 9) Figure 9 is a schematic plan view of the wiring section 21B according to the third embodiment. Except for the wiring section 21B, the suspension can be the same as described in the first embodiment. The wiring section 21B in this embodiment also has a first proximity section 45 and a second proximity section 46. The first proximity section 45 is positioned closer to the second conductor 41 than to the third conductor 42. The first proximity section 45 extends along the second conductor 41 in the longitudinal direction of the wiring section 21B (indicated by the double-headed arrow Y). The second proximity section 46 is positioned closer to the third conductor 42 than to the second conductor 41. The second proximity section 46 extends along the third conductor 42 in the longitudinal direction of the wiring section 21B.

[0056] As shown in Figure 9, the first conductor 33 is positioned between the second conductor 41 and the third conductor 42. The first conductor 33 has a first energized section 101, a second energized section 102, and a connection section 110. The first energized section 101 extends along the second conductor 41 in the longitudinal direction of the wiring section 21B. The first energized section 101 has a first proximity section 45. The second energized section 102 extends along the third conductor 42 in the longitudinal direction of the wiring section 21B. The second energized section 102 has a second proximity section 46. An insulating section 111 is formed between the first conductor 33 and the second conductor 41. An insulating section 112 is formed between the first conductor 33 and the third conductor 42.

[0057] [Fourth Embodiment] (Figure 10) Figure 10 is a schematic plan view of the wiring section 21C according to the fourth embodiment. Except for the wiring section 21C, the suspension can be the same as described in the first embodiment. The wiring section 21C in this embodiment also has a first proximity section 45 and a second proximity section 46. The first proximity section 45 is positioned closer to the second conductor 41 than to the third conductor 42. The first proximity section 45 extends along the second conductor 41 in the longitudinal direction of the wiring section 21C (indicated by the double-headed arrow Y). The second proximity section 46 is positioned closer to the third conductor 42 than to the second conductor 41. The second proximity section 46 extends along the third conductor 42 in the longitudinal direction of the wiring section 21C.

[0058] As shown in Figure 10, the first conductor 33 has a first energized section 101, a second energized section 102, and a jumper conductor 103. The first energized section 101 is located outside the second conductor 41 and extends along the second conductor 41 in the longitudinal direction of the wiring section 21C. The first energized section 101 has a first proximity section 45. The second energized section 102 is located between the second conductor 41 and the third conductor 42. The second energized section 102 extends along the third conductor 42 in the longitudinal direction of the wiring section 21C. The second energized section 102 has a second proximity section 46.

[0059] The first energized section 101 and the second energized section 102 are connected by a jumper conductor 103. An insulating section 120 is formed between the second conductor 41 and the first energized section 101. An insulating section 121 is formed between the third conductor 42 and the second energized section 102. An insulating section 122 is formed between the second conductor 41 and the third conductor 42.

[0060] It goes without saying that in implementing the present invention, the specific configurations of each element constituting the suspension can be changed in various ways. The wiring section can also be implemented in various configurations as needed. An example of an actuator mounted on the suspension is a piezoelectric element, but essentially, any member driven by an electrical signal will suffice. [Explanation of Symbols]

[0061] 1…Disk drive, 10A…First suspension, 10B…Second suspension, 14…Actuator mounting section in the first position, 15…Actuator mounting section in the second position, 21, 21A, 21B, 21C…Wiring section, 30R, 30L…Piezoelectric element (first actuator), 33…First conductor, 40R…Piezoelectric element (second actuator), 40L…Piezoelectric element (third actuator), 41…Second conductor, 42…Third conductor, 45…Near the first Contact section, 46...Second proximity section, 54...Actuator mounting section at the first position, 55...Actuator mounting section at the second position, 61...Wiring section, 70R, 70L...Piezoelectric element (first actuator), 73...First conductor, 80R...Piezoelectric element (second actuator), 80L...Piezoelectric element (third actuator), 81...Second conductor, 82...Third conductor, 101...First energized section, 102...Second energized section, 103...Jumper conductor, 110...Connection section.

Claims

1. A first actuator positioned at a first location, A second actuator and a third actuator are positioned in a second location, Wiring section and A suspension for a disk drive having, The aforementioned wiring section, A first conductor that is in electrical contact with the first actuator and supplies a first alternating current to the first actuator, A second conductor that is in electrical contact with the second actuator and supplies a second alternating current to the second actuator, It includes a third conductor that conducts with the third actuator and supplies a third alternating current to the third actuator, the third alternating current having the opposite phase to the second alternating current, The first conductor, A first proximity portion is positioned closer to the second conductor than the third conductor and extends along the second conductor in the longitudinal direction of the wiring portion, A second proximity portion is positioned closer to the third conductor than the second conductor and extends along the third conductor in the longitudinal direction of the wiring portion, A suspension for a disc drive, characterized by being equipped with the following:

2. In the suspension for a disc drive according to claim 1, The first conductor is placed between the second conductor and the third conductor. The first conductor, The first proximity portion extends along the second conductor in the longitudinal direction of the wiring portion, The second proximity portion extending along the third conductor in the longitudinal direction of the wiring portion, A suspension for a disk drive having the following features.

3. In the suspension for a disc drive according to claim 1, The second conductor and the third conductor are arranged adjacent to each other, The first conductor, A first energized section is located outside the second conductor, extends along the second conductor in the longitudinal direction of the wiring section, and has the first proximity section, A second energized section is located outside the third conductor, extends along the third conductor in the longitudinal direction of the wiring section, and has the second proximity section, A suspension for a disk drive having the following features.

4. In the suspension for a disc drive according to claim 1, The first conductor is placed between the second conductor and the third conductor. The first conductor, A first energized section extending along the second conductor in the longitudinal direction of the wiring section and having the first proximity section, A second energized section extending along the third conductor in the longitudinal direction of the wiring section and having the second proximity section, A suspension for a disk drive having the following features.

5. In the suspension for a disc drive according to claim 1, The first conductor, A first energized section is located outside the second conductor, extends along the second conductor in the longitudinal direction of the wiring section, and has the first proximity section, A second energized section is arranged between the second conductor and the third conductor, extending along the third conductor in the longitudinal direction of the wiring section, and having the second proximity section, A suspension for a disk drive having the following features.

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