KR20080059104A - Flexible cable assembly and hard disk drive with the same - Google Patents

Abstract

An FCA(Flexible Cable Assembly) and a hard disk drive with the same are provided to mount an FCA even in a small-size hard disk drive since a second carriage fixing part with an electronic device apart from the rotating shaft of a carriage more than a first carriage fixing part fastened to the carriage. An FCA(150) comprises a head, at least a pair of arms, a carriage(160), an HSA(Head Stack Assembly), first and second carriage fixing parts, and curved parts. The HSA rotates the head on the disk. The first carriage fixing part is fixed at the carriage. The second carriage fixing part is separated from the rotating shaft of the carriage, and contains an electronic device. The curved parts are curved to face the first and second carriage fixing parts.

Description

Flexible cable assembly and hard disk drive with the same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard disk drive, and more particularly, to a flexible cable assembly (FCA) of a hard disk drive.

An example of a flexible cable assembly (FCA) for properly maintaining a repetitive movement of a flexible cable in a hard disk drive (hereinafter referred to as "HDD"), which is one of disk devices, is illustrated in FIG. The structure which represents is proposed (refer Unexamined-Japanese-Patent No. 2005-190504).

As shown in FIG. 11, this conventional FCA 10 is an area B1 facing when bending toward the area A1 and the area A1 that are the joint portions of the HGA (Head Gimbal Assembly) and the FCA 10. ), An area C1 which is a wiring portion inverted by about 180 ° from the area A1, and an area D1 extending from the inverted area C1 toward the bracket and fixed to the hook. A pre-amplifier IC 12 is mounted in the region B1, and chips 13a and 13b are provided in the region A1 and the region B1.

The state which mounted the FCA10 of FIG. 11 to the carriage is shown in FIG. As shown in FIG. 12, the FCA 10 bends the area A1 toward the area B1, and the area B1 on which the preamplifier IC 12 is mounted is HSA (Head Stack Assembly) 30. It is mounted on the carriage so as to face. And FCA10 is bent about 180 degrees in area | region C1, and area | region D1 is fixed to the hook 50 made of resin. Reference numeral 20 in FIG. 12 denotes a VCM coil, and reference numeral 40 denotes a rotation axis of the HSA 30.

However, as the size of the HDD becomes smaller, the size of the HSA mounting the head also becomes smaller. This reduces the design freedom of the FPC and FCA.

In the conventional FCA 10 described above, the chip 13a is provided in the region A1 which is the junction between the HSA 30 and the FCA 10, and the preamplifier IC 12 or the chip is provided in the region B1. 13b is provided. In this way, the preamplifier IC 12 and the chips 13a and 13b are physically very difficult for an HSA used for an HDD of 1.8 inches or less (for example, 1.3-inch type or 1.0-inch type).

In addition, as the HDD becomes smaller, the preamplifier IC 12, chips 13a, 13b, and the like are mounted on a terminal portion in which a dynamic loop (not shown) of the FCA 10 is fixed to the housing of the HDD. However, it is difficult to maintain the electrical performance required for the HDD with this structure. For example, since the wiring from the recording element mounted at the HGA tip to a device such as a preamplifier IC becomes long, it is not possible to reduce the inductance which is a problem in high frequency technology. Becomes difficult.

An object of the present invention is to provide a novel and improved hard disk drive and flexible cable assembly (FCA) capable of maintaining electrical reliability and miniaturizing an apparatus.

The present invention includes a head for reading or recording information on an information recording surface of a disc, and a carriage supported coaxially with the axis of rotation of the arm between at least one pair of arms supporting the head and the pair of arms. A first carriage fixing part electrically connected to the head of a hard disk drive having a head stack assembly (HSA) for rotating the head onto the disk, the first carriage fixing part being fixed to the carriage; A second carriage fixing part spaced apart from the rotational axis of the carriage with respect to the carriage than the first carriage fixing part, and on which an electronic element is mounted; And a bent portion that is bent to face the first carriage fixing portion and the second carriage fixing portion to provide a flexible cable assembly (FCA), and a hard disk drive having the same.

According to the present invention, in the FCA, the first carriage fixing portion and the second carriage fixing portion on which the electronic element is mounted are fixed to the carriage. Here, by arranging the second carriage fixing portion in which the electronic element is mounted at a position spaced apart from the rotation axis of the carriage rather than the first carriage fixing portion fixed to the carriage, even in a small HDD, there is sufficient space for mounting the electronic element in the FCA. It can be secured. Further, by mounting the electronic element on the carriage side, the physical distance between the electronic element and the head is shortened and the inductance is reduced.

The first carriage fixing part and the second carriage fixing part may be disposed parallel to the rotation axis of the carriage. If the plane of the first carriage fixing part and the second carriage fixing part are arranged to be staggered with respect to the rotation axis of the carriage, the rotation of the arm may cause distortion of the shape of the FCA or the FCA may interfere with the rotation of the arm. have. Thus, by arranging the first carriage fixing part and the second carriage fixing part of the FCA in parallel with the rotation axis of the carriage as in the present invention, distortion occurs in the FCA fixed to the carriage, or rotation of the arm is prevented by the FCA. You can do that.

In addition, a ground terminal may be provided in the second carriage fixing part. The carriage and the ground terminal are electrically connected by screwing the carriage and the second carriage fixing part with screws. In this way, by providing the ground terminal in the second carriage fixing portion formed to fix the FCA to the carriage, the FCA and the carriage are fixed by the screw, and the ground connection between the electronic element and the carriage can also be established. In addition, by using a screw for fixing the second carriage fixing portion and the carriage, the FCA can be easily separated from the carriage.

The FCA may include a dynamic loop portion extending from the second carriage fixing portion and movable by the rotation of the HSA. Here, the carriage is provided with a limiter for fixing the carriage side end portion of the dynamic loop portion. As a result, since the starting point of the dynamic loop portion is fixed, the dynamic loop portion can exhibit a more stable behavior even with respect to the rotational movement of the HSA.

In addition, the hard disk drive of the present invention may further include a cover member for covering the disk. The cover member may be provided with a dynamic loop fixing portion for fixing an end portion on the side opposite to the carriage side end portion of the dynamic loop portion. As a result, the end point of the dynamic loop portion is fixed, so that the dynamic loop portion can exhibit stable behavior with respect to the rotational movement of the HSA.

According to the present invention, it is possible to provide a hard disk drive and FCA (Flexibel Cable Assembly) capable of maintaining electrical reliability and miniaturizing the device.

EMBODIMENT OF THE INVENTION Preferred embodiment of this invention is described in detail, referring an accompanying drawing below. In addition, in this specification and drawing, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol about the component which has substantially the same functional structure.

First, a schematic configuration of an HDD according to an embodiment of the present invention will be described with reference to FIG. 1 is a schematic plan view showing the structure of the HDD 100 according to the present embodiment.

As shown in FIG. 1, the hard disk drive 100 according to the present embodiment rotates the disk 120, which is a data storage medium fixed by a clamp screw 115, to a substantially rectangular base member 105. And an HSA 130 having a spindle motor 110 and a head 135 for recording and / or reproducing data on the disk 120. In addition, although not shown in FIG. 1, in order to maintain the cleanliness of the HDD 100 together with the base member 105, a cover member covering the upper surface of the disk 120 is provided.

The spindle motor 110 is a motor for rotating the disk 120, the spindle shaft is rotated by the action of the magnetic circuit and the magnet. In the center of the spindle motor 110, a screw hole for screwing the clamp screw 115 is formed.

As shown in FIG. 1, the HSA 130 includes a head 135 for recording and / or reproducing data on the disc 120, one end of which is mounted to the rotating shaft 133, and the other end of which includes a head 135. It is constructed with a pair of arms 131 supporting one HGA 134. By rotating the arm 131 to move the head 135 to a predetermined position on the disc 120, data can be recorded and / or reproduced on the disc 120. FIG. The HSA 130 can be driven by, for example, a voice coil motor (VCM). In addition, the HSA 130 includes an FCA electrically connected to the head 135. The detail of FCA is mentioned later.

In the HDD 100, the disk 120 fixed by the clamp screw 115 is rotated, for example, in the direction of an arrow L in FIG. 1 by the spindle motor 110. Then, by moving the arm 131, the head 135 is moved to a predetermined position of the disc 120, and data recording and / or reproduction are performed.

In the above, the schematic structure of the HDD 100 which concerns on a present Example was demonstrated. Next, based on FIG. 2, the FCA 150 which concerns on a present Example is demonstrated. 2 is a plan view showing the configuration of the FCA 150 according to the present embodiment.

The FCA 150 is a member in which electronic devices such as chips 155a and 155b and a preamplifier IC 156 are mounted on an FPC formed by adhering a copper foil and a film-shaped insulating material (base film). It transmits the signal from the electron conversion element mounted on the)) and also the driving current to the VCM coil. As shown in FIG. 2, the FCA 150 which concerns on a present Example consists of six area | regions of the area | region A-area | region F. As shown in FIG.

The area A is fixed in contact with the metal carriage 160 (refer to FIG. 3) provided between the pair of arms 131, and is an area for connecting with the HGA 134, and is a first carriage. Configure the fixing part. Further, in the region A, the carriage 160 and the fixing portion 151 which are soldered and fixed, and the first engagement portion 152 engaged with the carriage 160 are formed.

The area B is an area (VCM connection part) for connecting with the VCM, and for example, two connection parts 153a and 153b are formed.

The region C is a region in which the wiring from the region A is inverted by about 180 degrees, and constitutes a bent portion. By providing the region C, it is possible to arrange the region D and the region E to be described later so as to face the region A. FIG.

The area D is an area (first electronic element mounting portion) in which the chips 155a and 155b are mounted while being in contact with the carriage 160 and via the wiring from the area C. In the region D, a ground terminal 154 for securing a ground with the HSA 130 is also provided. In the present embodiment, the ground terminal 154 is provided on one side of the FCA 150 that faces the carriage 160.

The region E is a second electronic element mounting portion in which the preamplifier IC 156 for amplifying a signal handled by the head 135 which is an electron conversion element is mounted, and the dynamic loop portion is drawn out. The region E is bent relative to the region D so that the notch 154a and the ground terminal 154 of the region D overlap and are fixed to the HSA 130. At this time, the region E is bent such that the chips 155a and 155b and the preamplifier IC 156 are located on the opposite side of the surface where the region D and the region E face each other. The region D and the region F constitute a second carriage fixing portion that fixes the FCA 150 to the carriage 160.

The area F is an area (dynamic loop portion) extending from the area E and operating dynamically in accordance with the movement of the HSA 130.

Next, the assembly process of the HSA 130 and the method of fixing the FCA 150 to the carriage 160 will be described based on FIGS. 3 to 9. 3 is a side view showing a state in which the FCA 150 according to the present embodiment is fixed to the carriage 160. 4 is a side view of the HSA 130 for explaining the HSA assembly process according to the present embodiment. 5 is a perspective view of FIG. 4. 6 is a plan view of FIG. 4. 7 is a plan view illustrating a state in which the FCA 150 is fixed to the carriage 160. 8 is a partial side view for explaining the process of fixing the FCA 150 to the limiter 165, (a) shows the state before the FCA 150 is fitted to the limiter 165, (b) The FCA 150 is shown engaged with the limiter 165. 9 shows a state where the other end of the FCA 150 is fixed to the dynamic loop fixing part 103 of the cover member 101 of the HDD 100, where (a) is a partial plan view and (b) is a partial side view. to be.

In general, the assembly of the HSA 130 includes the first process of mounting the FCA 150 to the carriage 160, the second process of cleaning the carriage 160 and the FCA 150, and the HGA 134 (FIG. 4). As shown in the figure, the arm 131 supporting the head 135, the gimbal 136, and the load beam 137 is seated on the carriage 160 to pivot 141 and washer 143 from above and below. ) And the third process of fixing using the nut 145, the fourth process of connecting the HGA 134 and the FCA 150, the FCA 150, and the carriage of the region D and the region E. It consists of a 5th process fixed to the 160. Hereinafter, a method of fixing the FCA 150 to the carriage 160 in accordance with these HSA 130 assembly steps will be described.

As shown in FIG. 3, the FCA 150 according to the present embodiment is first connected to the carriage 160 (first step). For example, the carriage 160 formed of a conductive material such as metal is supported coaxially with the rotation shaft 133 of the arm 131 between the pair of arms 131 stacked, and the spacer 160 Function as. The carriage 160 is formed with a second protrusion 164 protruding downward from the end of the head 135 side, and the second protrusion 164 has a limiter for fixing the region E of the FCA 150. 165 is formed. On the side opposite to the second protrusion 164 of the carriage 160, a VCM coil 170 constituting the VCM is mounted.

The region A of the FCA 150 is fixed to the FCA mounting portion 161 of the carriage 160 positioned between the second protrusion 164 of the carriage 160 and the VCM coil 170. The area A of the FCA 150 is disposed in contact with the FCA mounting portion 161 so that the plane of the area A is substantially parallel to the direction of the rotation axis of the arm 131. Then, the fixing portion 151 of the region A is fixed to the FCA fixing portion 161a of the carriage 160 by soldering, for example. In addition, the first engaging portion 152 formed in the region A of the FCA 150 is engaged with the protrusion 163 formed in the FCA mounting portion 161 of the carriage 160.

Next, the carriage 160 and the FCA 150 are cleaned in order to remove contaminants or the like generated when soldering and fixing the fixing portion 151 of the region A and the FCA fixing part 161a of the carriage 160. (Second process).

In addition, as shown in FIG. 4, a pair of arms 131 are disposed so that the carriage 160 to which the FCA 150 is fixed is interposed therebetween, and the through hole 132 formed in the rotation shaft of the arm 131. The pivot 141 is inserted into (refer FIG. 5), and it fastens with the nut 145 through the washer 143 (3rd process). Then, the wiring portion (wiring portion for connecting to the head 135 or the VCM coil 170. Not shown) of the HGA 134 and the FCA 150 are electrically connected (fourth step).

Thereafter, the region D and the region E of the FCA 150 are fixed to the carriage 160 (fifth step). In the fifth step, as shown in FIG. 5, in the state where the FCA 150 is bent so that the region E and the region D overlap, the region C is inverted by about 180 ° with respect to the region A. FIG. . The region D and the region E, which are bent to face the region A, are fixed by screwing the screw 166 into the screw hole 162a of the carriage 160, as shown in FIG. . At this time, a reinforcement plate 149 is provided between the region E and the region D of the FCA 150. In addition, the area A of the FCA 150 may also be reinforced by the reinforcing plate 147 as shown in FIG. 5.

In the FCA 150 according to the present embodiment, the preamplifier IC is mounted on the region D and the region E rather than the region A by mounting electronic devices such as the chips 155a and 155b and the preamplifier IC 156. Compared with the conventional FCA 10 in which the chip 12 and the chip 13b face the carriage, the electronic device can be arranged even when the HDD 100 is miniaturized.

In addition, reducing the inductance which is a problem in high frequency technology is required as the electrical performance of the HDD 100. For this reason, in the FCA 150 according to the present embodiment, the electronic devices such as the preamplifier IC 156 are mounted in the areas D and E so that the physical distance between the electronic devices and the head 135 is known. Compared with the above, the inductance can be shortened.

Further, by contacting the ground terminal 154 (see FIG. 2) provided in the area D of the FCA 150 with the first protrusion 162 of the conductive carriage 160 by the screw 166 (see FIG. 7). The preamplifier IC 156 and the HSA 130 provided in the region E of the FCA 150 are grounded. In the conventional case, the ground connection was made on the bracket side, and the ground line passed through the dynamic loop portion. That is, the preamplifier IC is mounted on a bracket to which the end of the dynamic loop portion is opposed to the carriage side of the dynamic loop portion, and the wiring (lead line) connecting the head and the preamplifier IC also passes through the dynamic loop portion. In this way, the ground line and the lead line are arranged in parallel in the dynamic loop portion, thereby interfering with each other. Therefore, when an unexpected voltage is applied to the ground line that is wired on the FCA 150, the lead element is destroyed by cross talk from the ground line to the lead line (EMI (Electromagnetic Interference), ESD ( Electrostatic discharge).

On the other hand, in the present embodiment, as described above, the ground connection of the preamplifier IC 156 and the HSA 130 is performed on the carriage 160 side, so that no ground line is disposed in the dynamic loop portion. In addition, the preamplifier IC 156 is mounted on the carriage 160 side, so that the wiring (lead line) connecting the head 135 and the preamplifier IC 156 to the dynamic loop portion is thereby connected to the ground line and the lead. Line interference can be prevented.

Since it is difficult to clean the entire HSA 130 including the carriage after the fifth process, it is necessary to avoid the process of generating contamination after the second process (for example, fixing by soldering in the fifth process). . In this embodiment, by fixing the FCA 150 to the carriage 160 by using the screw 166, no contamination is generated in the fifth process, and the quality of the HSA 130 is maintained satisfactorily in the assembly process. Can be. In addition, by using the screw 166 as the fixing member, the FCA 150 fixed to the carriage 160 can be removed more easily than fixing using, for example, soldering. In a rework process that may be performed in some cases, it is possible to easily replace the HGA 134.

In the above, the assembly process of the HSA 130 and the method of fixing the FCA 150 to the carriage 160 were demonstrated.

On the other hand, as one of the mechanical performances required for the HDD 100, the wiring section (area F) (dynamic loop) of the FCA 150 that connects the HSA 130 and the PCBA (Print Circuit Board Assembly) and operates dynamically. B) should always exhibit stable behavior with respect to the HSA 130 which performs rotational movement about the pivot 141. For this reason, it is necessary to stabilize the starting point and end point of the dynamic loop part (region F), ie, the positions of both ends.

For this purpose, small HDDs use FPC using a technique called photo-sensitive polyimide (PSPI). In the conventional FPC, a film including a reinforcing plate made of stainless steel (SUS) and a wire is adhered using a resin, and then mechanical punching is performed to form an outer shape. On the other hand, in the PSPI method, a polyimide (PI) film having a photo-sensitive is formed on a reinforcement plate made of a thin SUS plate, and exposure, development, film forming, and etching are performed to form an FPC. In this method, since the external shape is finally formed by etching, a thin reinforcement board is used as mentioned above. For this reason, there arises a problem that the start point and the end point of the dynamic loop portion are not stabilized.

Also in this embodiment, when PSPI is used for FPC, the thickness of the reinforcement board 149 becomes thinner than the thickness of the reinforcement board conventionally used. For example, while the thickness of the conventional reinforcing plate is about 150 micrometers, it is about 50 micrometers in PSPI. The thickness of the reinforcing plate provided at the starting point of the dynamic loop portion where the region F is drawn out from the HSA 130 and at the end point of the dynamic loop portion where the region F reaches the bracket 180 (see FIG. 7) on the PCBA side Since it is thin, there exists a problem that the starting point and the ending point of the area | region F are not stabilized at the time of assembly. In addition, when the HSA 130 rotates, the starting point and the ending point of the region F (dynamic loop portion) may be easily deformed according to the stress generated in the region F. FIG.

In response to this problem, the FCA 150 according to the present embodiment fixes the start point and the end point of the region F (dynamic loop portion) of the FCA 150, and also the start point and the end point by the rotation operation of the HSA 130. It is characterized by stabilizing the position of.

First, the limiter 165 is formed in the carriage 160 of the HDD 100 according to the present embodiment at a position corresponding to the area E of the FCA 150. As shown in FIG. 6, the limiter 165 is provided in the 2nd protrusion part 164 of the carriage 160, and has a shape which protruded toward the area | region C side in which FCA150 is reversed. In the region E of the FCA 150, a second engagement portion 157 (see FIG. 2) to be engaged with the limiter 165 is formed. As shown in Fig. 8A, the FCA 150 inverted in the region C is dragged from left to right in Fig. 8A. As shown in FIG. 8B, the second engagement portion 157 of the region E of the FCA 150 is engaged with the limiter 165. As a result, the starting point of the region F, which is the dynamic loop portion of the FCA 150, is fixed, and is not easily deformed even by the rotational movement of the HSA 130.

On the other hand, the end point of the area F of the FCA 150 is fixed by the dynamic loop fixing part 103 provided in the cover member 101, as shown to FIG. 9 (a) and FIG. 9 (b). The dynamic loop fixing part 103 can be formed, for example by providing a pair of ribs in which the groove was formed between them, as shown to FIG. 9 (b). However, the specific configuration of the dynamic loop fixing part 103 is not limited to this example. The FCA 150 extending from the carriage 160 toward the bracket 180 is first fixed to the dynamic loop fixing part 103 of the cover member 101, and then the bracket 180 installed on the base member 105. Is connected to. By fixing the end point of the area F of the FCA 150 in the groove formed between the pair of ribs of the dynamic loop fixing part 103, the end point of the area F is easily also by the rotational movement of the HSA 130. It will not be deformed.

In this embodiment, the limiter 165 fixing the start point side of the area F of the FCA 150 and the dynamic loop fixing part 103 fixing the end point side of the area F of the FCA 150 are provided. Although the structure provided is demonstrated, the limiter 165 which fixes the starting point side of the area | region F of the FCA 150 at least should just be provided.

The HDD 100 and the FCA 150 used therein have been described above. According to the FCA 150 of the HDD 100, the chips 155a and 155b are mounted on the electronic device mounting portions (regions D and E) facing the carriage fixing portion (region A) of the FCA 150. ), And an electronic device such as a preamplifier IC 156 is mounted. As a result, since the physical distance between the head 135 and the electronic element can be shortened, the inductance which is a problem in high frequency technology can be reduced.

In addition, by forming a ground terminal 154 for ground connection of the HSA 130 and the preamplifier IC 156 to the fixed portion of the carriage D of the area D of the FCA 150, the ground line is a dynamic loop. It is not arranged in parts. In addition, since the preamplifier IC 156 is installed in the electronic component mounting portion of the FCA 150 fixed to the carriage 160, the wiring (lead line) connecting the head 135 and the preamplifier IC 156 is also a dynamic loop. It is not arranged in parts. Due to such a configuration, mutual interference between the ground line and the lead line can be prevented, and EMI, etc., generated when an unexpected voltage is applied to the ground line can be prevented.

Moreover, by providing the limiter 165 which fixes the starting point side of the area | region F of the FCA 150, and the dynamic loop fixing part 103 which fixes the end point side of the area | region F of the FCA 150, FCA ( The positions of the start point and the end point of the dynamic loop portion (region F) of 150 can be stabilized. Thereby, the stable operation can always be exhibited even with respect to the rotation operation of the HSA 130.

By using the screw 166 to fix the FCA 150 to the carriage 160, it is possible to maintain good quality of the HSA 130 in the assembling process without causing contamination in the fifth process. Moreover, since the FCA 150 fixed to the carriage 160 can be removed easily, a rework process can be performed easily.

As mentioned above, although the preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this example. If it is a person skilled in the art, it is clear that various changes or modifications are possible within the range described in the claim, and these are naturally understood to belong to the technical scope of the present invention.

For example, in the above embodiment, the ground terminal 154 for ground connection between the preamplifier IC 156 and the HSA 130 is formed in the region D as shown in FIG. Is not limited to this example. For example, as shown in FIG. 10, the ground terminal 254 is formed in the area E of the FCA 250, and the notch part 254a corresponding to the ground terminal 254 is formed in the area D. As shown in FIG. You may also In this case, as shown in FIG. 7, when the FCA 250 and the carriage 160 are fixed by using the screw 166, the area of the ground terminal 254 must be increased as compared with the case of joining by soldering. do. In addition, depending on the terminal arrangement of the preamplifier IC 156, wiring may be required to surround the ground terminal 254 provided in the region E. FIG. Therefore, when the ground terminal 254 is formed in the area E of the FCA 250, it is preferable to consider the connection method of the FCA 250 and the carriage 160, space, and the like.

In the above embodiment, the ground terminal 154 is connected to the ground by directly contacting the carriage 160, but the present invention is not limited to this example. For example, the ground terminal 154 and the carriage 160 are screwed by screwing the screw 166 into the screw hole 162a of the carriage 160 so that the flange portion of the screw 166 contacts the ground terminal 154. Can be connected to ground. At this time, the screw 166 is formed of a conductive material.

In the above embodiment, the ground terminal 154 is provided in the second carriage fixing part of the area D of the FCA 150, but the present invention is not limited to this example. For example, a ground terminal may be provided to the second engaging portion 157 that engages with the limiter 165 in the region E of the FCA 150 so as to be grounded.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a schematic plan view showing the structure of an HDD according to a preferred embodiment of the present invention.

2 is a plan view showing the structure of an FCA according to the embodiment.

3 is a side view showing a state in which an FCA according to the embodiment is fixed to a carriage.

4 is a side view of an HSA for explaining an HSA assembling process according to the embodiment.

5 is a perspective view of FIG. 4.

6 is a plan view of FIG. 4.

7 is a plan view illustrating a state in which an FCA is fixed to a carriage.

8 is a partial side view for explaining the process of fixing the FCA to the limiter, (a) shows the state before the FCA is engaged to the limiter, (b) shows the state in which the FCA is engaged to the limiter.

9 shows a state in which the other end of the FCA is fixed to the dynamic loop fixing part of the cover member of the HDD, where (a) is a partial plan view and (b) is a partial side view.

10 is a plan view showing a modification of the FCA of the present invention.

11 is a plan view showing the structure of a conventional FCA.

It is a top view which shows the structure of the conventional HSA.

Claims (15)

A head for reading or recording information on the information recording surface of the disc, and a carriage supported coaxially with the axis of rotation of the arm between at least one pair of arms supporting the head and the pair of arms, the head Electrically connected to the head of a hard disk drive having a head stack assembly (HSA) for rotationally moving onto the disk, A first carriage fixing part fixed to the carriage; A second carriage fixing part spaced apart from the rotational axis of the carriage with respect to the carriage than the first carriage fixing part, and on which an electronic element is mounted; And, And a bent portion that is bent to face the first carriage fixing portion and the second carriage fixing portion. The method of claim 1, The first carriage fixing portion and the second carriage fixing portion, FCA characterized in that arranged in parallel to the axis of rotation of the carriage. The method of claim 1, And the first carriage fixing part includes a first engaging part engaged with the protrusion formed on the carriage. According to claim 1, The second carriage fixing part includes a ground terminal electrically connected to the carriage by being fixed to the carriage by a screw. The method of claim 4, wherein The electronic device mounted on the second carriage fixing part includes a pre-amplifier IC for amplifying a signal handled by the head. And the carriage connected to the preamplifier IC and the carriage by the ground terminal. The method of claim 1, The FCA further includes a dynamic loop part extending from the second carriage fixing part and moving according to the rotation of the HSA. And the second carriage fixing portion includes a second engagement portion engaged with a limiter formed on the carriage to fix an end portion of the carriage side of the dynamic roof portion. A head for reading or recording information on the information recording surface of the disc, at least one pair of arms supporting the head, and a carriage coaxially supported with the rotational axis of the arm between the pair of arms, A head stack assembly (HSA) for rotating the head onto the disk; And, And a flexible cable assembly (FCA) electrically connected to the head, wherein the FCA includes: A first carriage fixing part fixed to the carriage; A second carriage fixing part spaced apart from the rotational axis of the carriage with respect to the carriage than the first carriage fixing part, and on which an electronic element is mounted; And, And a bent portion that is bent such that the first carriage fixing portion and the second carriage fixing portion face each other. The method of claim 7, wherein And the first carriage fixing part and the second carriage fixing part are disposed in parallel to the rotation axis of the carriage. The method of claim 7, wherein And the first carriage fixing part includes a first engaging part engaged with a protrusion formed in the carriage. The method of claim 7, wherein The second carriage fixing portion is provided with a ground terminal, And the carriage and the ground terminal are electrically connected to each other by fixing the carriage and the second carriage fixing part with screws. The method of claim 10, The electronic device mounted on the second carriage fixing part includes a pre-amplifier IC for amplifying a signal handled by the head. And the preamplifier IC and the carriage are grounded by the ground terminal. The method of claim 7, wherein The FCA further includes a dynamic loop part extending from the second carriage fixing part and moving according to the rotation of the HSA. And said carriage is provided with a limiter for fixing an end portion of said dynamic side of said carriage side. The method of claim 12, And the second carriage fixing part includes a second engaging part engaged with the limiter. The method of claim 12, Further comprising a cover member for covering the disk, And the cover member includes a dynamic loop fixing portion for fixing an end portion of the dynamic loop portion opposite to the carriage side. The method of claim 14, The dynamic loop fixing part includes a pair of ribs and a groove formed between the pair of ribs, the groove of which the end of the side of the dynamic loop part opposite to the carriage side is fixed. drive.

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