Supporting bracket of hard disk and hard disk

Abstract

The utility model discloses a support bracket of a hard disk and the hard disk, which belong to the technical field of computer data storage and read-write, and comprise a coil cantilever and a magnetic head cantilever, a protruding strip is arranged at one end of the magnetic head cantilever and located between the first cantilever and the second cantilever, coil limiting grooves are formed in the top and the bottom of the containing groove, and the two coil limiting grooves are connected with the two ends of the protruding strip respectively. According to the utility model, the coil cantilevers are arranged to be the first cantilever and the second cantilever which are opposite to each other, and the coil cantilevers, the protruding strips on the magnetic head cantilever and the coil limiting grooves at the top and the bottom of the accommodating groove are integrally designed, so that multiple cooperative gains are realized. Through the communication design of the raised strip and the coil limiting groove, the electrical connection point of the raised strip of the voice coil is physically fused with the mechanical limiting structure of the coil limiting groove, so that the lead path of the coil is shortened, the fixation is strengthened, the mechanical reliability of the connection point is improved, and the risk that a welding point is broken due to vibration fatigue is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of computer data storage and reading / writing, and in particular to a hard disk support bracket and a hard disk. Background Technology

[0002] Hard disk drives (HDDs) are mainstream data storage devices. Internally, a voice coil motor (VCM) drives a support frame to move, thereby enabling the read / write head to perform precise seek and read / write operations on the high-speed rotating disk surface. The support frame is a key load-bearing and transmission component connecting the voice coil coil and the read / write head; its structural design directly determines the hard drive's performance, reliability, and shock resistance.

[0003] In existing technologies, hard drive support brackets typically employ a one-piece cantilever structure. The voice coil is usually fixed to the coil receiving slot within the bracket using adhesive or clips, with its leads soldered to independent pads or pins near the coil. This design has the following inherent drawbacks: First, the separation of the coil fixation from the lead connection point makes the solder joint prone to fatigue fracture due to stress concentration during frequent hard drive starts and stops or external impacts, leading to drive failure. Second, traditional single-arm or wide-arm coil cantilever structures have high dynamic stiffness but insufficient local flexibility, making it difficult to effectively attenuate vibrations from the voice coil motor itself and externally transmitted vibrations. These vibrations are directly transmitted to the read / write head, affecting its flight stability and increasing read / write error rates. Furthermore, as hard drive storage density continues to increase, the heat generated by the read / write head increases, and higher seek speeds are required. Traditional cantilever structures are mostly solid, resulting in limited heat dissipation efficiency, and their large mass also restricts acceleration performance. Although some designs attempt to reduce weight by opening holes in the cantilever, they often fail to comprehensively consider the synergistic relationship between weight reduction, heat dissipation, structural stiffness distribution, and stress concentration, which can easily introduce new resonance points or weak links. Utility Model Content

[0004] The main purpose of this utility model is to provide a support bracket and hard drive for hard drives, aiming to solve the technical problem that traditional single-arm or wide-arm coil cantilever structures have high dynamic stiffness but insufficient local flexibility, making it difficult to effectively attenuate the vibrations transmitted by the voice coil motor itself and externally.

[0005] In order to achieve the above-mentioned utility model objectives, the first aspect of this utility model proposes a hard disk support bracket and a hard disk for moving the magnetic head under the drive of a drive device, including a coil cantilever and a magnetic head cantilever.

[0006] The coil cantilever is connected to the magnetic head cantilever, and the magnetic head cantilever is used to connect the magnetic head;

[0007] The coil cantilever is provided with a receiving groove for placing the voice coil coil of the driving device; the coil cantilever includes a first cantilever and a second cantilever, with the first cantilever and the second cantilever being arranged opposite to each other.

[0008] A raised strip is provided at one end of the magnetic head cantilever and between the first cantilever and the second cantilever. Coil limiting grooves are provided at the top and bottom of the receiving groove, and the two coil limiting grooves are respectively connected to the two ends of the raised strip.

[0009] A limiting groove is formed in the middle of the side wall of the magnetic head cantilever along its length.

[0010] Optionally, the first cantilever includes a first connecting portion and a first limiting portion. The first connecting portion is connected to the magnetic head cantilever. The first limiting portion is disposed at the end of the first connecting portion away from the magnetic head cantilever. A limiting groove is provided at the connection between the first connecting portion and the first limiting portion. The limiting groove is located on the side of the first cantilever away from the receiving groove.

[0011] Optionally, the first limiting portion extends and is bent to a specified length in the direction of the receiving groove, and the width between the two sides of the first limiting portion gradually decreases from the first connecting portion toward the free end of the first limiting portion.

[0012] Optionally, the second cantilever includes a second connecting portion and a second limiting portion. The second connecting portion is connected to the magnetic head cantilever, and the second limiting portion is disposed at one end of the second connecting portion away from the magnetic head cantilever, and the second limiting portion protrudes into the receiving groove.

[0013] Optionally, the top opening width of the coil limiting groove is less than or equal to half the width of the entire bottom of the receiving groove.

[0014] Optionally, the magnetic head cantilever includes a magnetic head connecting arm and a cantilever body connected to the magnetic head connecting arm. The cantilever body is provided with a pivot hole and at least one heat dissipation hole. The heat dissipation hole is located between the pivot hole and one end of the magnetic head cantilever connected to the magnetic head. A protrusion is fixedly connected to the wall of the pivot hole.

[0015] Optionally, the heat dissipation holes are provided along the extension direction of the support bracket. The heat dissipation holes include a first heat dissipation hole and a second heat dissipation hole disposed opposite to the first heat dissipation hole. The first heat dissipation hole is located between the second heat dissipation hole and one end of the magnetic head cantilever connecting the magnetic head, and the second heat dissipation hole is located between the first heat dissipation hole and the pivot hole.

[0016] Optionally, a first specified distance is formed between the first heat dissipation hole and one end of the magnetic head cantilever connected to the magnetic head, a second specified distance is formed between the first heat dissipation hole and the second heat dissipation hole, and a third specified distance is formed between the second heat dissipation hole and the pivot hole, wherein the length of the second specified distance is less than or equal to the length of the first specified distance, and the length of the first specified distance is less than or equal to the length of the third specified distance.

[0017] Optionally, both the first heat dissipation hole and the second heat dissipation hole include a main body portion, and a first arc-shaped portion and a second arc-shaped portion located at both ends of the main body portion, and the diameter of the first arc-shaped portion is smaller than the diameter of the second arc-shaped portion.

[0018] The second aspect of this utility model provides a hard disk, including the support bracket for the hard disk.

[0019] The beneficial effects of this utility model are:

[0020] 1. This utility model relates to a hard drive support bracket and hard drive. By setting the coil cantilever as a first and second cantilever in opposition, and integrating it with the raised strip on the head cantilever and the coil limiting groove at the top and bottom of the receiving groove, multiple synergistic gains are achieved. The double cantilever structure itself provides local elasticity, becoming the first barrier to suppress vibration; while the connection design between the raised strip and the coil limiting groove physically integrates the electrical connection point of the voice coil's raised strip with the mechanical limiting structure of the coil limiting groove. This minimizes the coil lead path and strengthens the fixation, greatly improving the mechanical reliability of the connection point and avoiding the risk of solder joint breakage due to vibration fatigue. At the same time, the limiting groove in the middle of the head cantilever cleverly achieves local weight reduction without sacrificing the rigidity of the main body, which is beneficial to improving the seek response speed of the head and provides a benchmark for process calibration.

[0021] 2. The hard drive support bracket and hard drive of this utility model, by setting a specific structure consisting of a first connecting part and a first limiting part on the first cantilever, and machining a limiting groove on the side away from the receiving groove at the connection point, creates a controllable local flexible hinge. This design allows the first cantilever to undergo beneficial elastic deformation when subjected to dynamic loads, thereby efficiently dissipating vibration energy from the voice coil motor or external sources, preventing it from being transmitted to the tip of the read / write head cantilever, and significantly improving the flight stability and positioning accuracy of the read / write head during the reading and writing process.

[0022] 3. The hard drive support bracket and hard drive of this utility model extend towards the receiving groove through the first limiting part, so that its end can provide radial auxiliary constraint on the voice coil, thereby enhancing the overall stability of the coil. The gradual narrowing design of its two sides from the connecting part to the free end achieves a smooth transition of structural rigidity, effectively avoids stress concentration, and significantly improves the fatigue life of the component under long-term repeated stress conditions. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the support bracket for the hard drive of this utility model;

[0024] Figure 2 This is a schematic diagram of the heat dissipation holes in the support bracket of the hard drive of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Second cantilever; 101. Second connecting part; 102. Second limiting part; 11. First cantilever; 110. First connecting part; 111. First limiting part; 112. Limiting groove; 2. Magnetic head cantilever; 201. Protrusion strip; 202. Limiting groove; 20. Magnetic head connecting arm; 21. Cantilever body; 22. Pivot hole; 221. Protrusion; 3. Accommodating groove; 4. Coil limiting groove; 6. Heat dissipation hole; 60. First heat dissipation hole; 61. Second heat dissipation hole; 601. Main body; 602. First arc-shaped part; 603. Second arc-shaped part.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of features, integers, steps, operations, elements, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any modules and all combinations of one or more associated listed items.

[0030] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0031] Reference Figures 1-2 This utility model provides an embodiment of a hard disk drive (HDD) support bracket. Its core function is to provide stable and precise support and positioning for the voice coil motor coil and the cantilever assembly carrying the read / write head within the HDD, ensuring that the read / write head can be driven quickly and accurately to the designated track on the disk. The optimized design of this support bracket aims to improve the overall operational stability of the HDD, reduce vibration impact, and improve heat dissipation. The HDD support bracket is integrally molded from a high-rigidity and lightweight material (e.g., stainless steel or a specific aluminum alloy), mainly comprising a first cantilever 11, a second cantilever 10 constituting the coil cantilever, and a read / write head cantilever 2 for connecting the read / write head. One end of the read / write head cantilever 2 is firmly connected to the coil cantilever (i.e., the combined structure of the first cantilever 11 and the second cantilever 10). Inside the coil cantilever, a receiving groove 3 is provided to accommodate the voice coil coil of the drive device (i.e., the voice coil motor). The voice coil coil is placed in the receiving groove 3. When the coil is energized, it experiences force in the magnetic field formed by the permanent magnet, thereby driving the entire support bracket and the read / write head at the end to rotate around a pivot.

[0032] In this invention, the coil cantilever is not a single, integral wide arm, but rather consists of a first cantilever 11 and a second cantilever 10 arranged opposite each other. The double-cantilever structure of the first cantilever 11 and the second cantilever 10 forms an opening, enhancing the local elasticity of the structure and helping to absorb and suppress minute vibrations generated during high-speed seek operations. The connecting end of the magnetic head cantilever 2 is located precisely in the area between the first cantilever 11 and the second cantilever 10, and an upwardly protruding strip 201 is provided there. Correspondingly, a coil limiting groove 4 is machined on the top and bottom inner walls of the receiving groove 3. The two coil limiting grooves 4 are not isolated; they precisely mate and communicate with both ends of the protruding strip 201. During actual assembly, the enameled wire end of the voice coil can be led out from the coil limiting groove 4 and wound or welded to the protruding strip 201. The electrical connection point of the coil (protrusion strip 201) is physically integrated with the mechanical limiting structure (coil limiting groove 4), making the coil routing path shorter and more regular. This not only reduces the possibility of signal interference, but also significantly improves the local structural strength of the coil lead area through the reinforcing effect of the protrusion strip 201, preventing fatigue fracture of the solder joint or lead due to electromagnetic force caused by frequent start-stop.

[0033] Special care must be taken during assembly. The raised strip 201 must be accurately inserted into the corresponding position between the two coil limiting grooves 4, maintaining a slight gap with the edge of the groove to ensure that no assembly stress is generated. If it is not aligned and is forcibly pressed in, it may cause deformation of the raised strip 201 or chipping of the edge of the coil limiting groove 4, affecting the flatness of the subsequent coil installation.

[0034] To further optimize the dynamic performance of the magnetic head cantilever 2, a limiting groove 202 is formed in the middle of its side wall along the length direction. The limiting groove 202 serves two main purposes: firstly, as a mass reduction zone, it can moderately reduce the equivalent mass of the cantilever end (the end where the magnetic head is mounted) without significantly weakening the longitudinal stiffness of the cantilever body 21, thus improving the seek speed and positioning accuracy of the magnetic head; secondly, the groove can serve as a process positioning reference, providing a reference mark in subsequent magnetic head installation or balancing processes. As a layout strategy, the shape of the limiting groove 202 is not limited to the rectangle shown in the figure; it can also be designed as an arc-shaped groove, a rhomboid groove, or other irregularly shaped grooves that can achieve weight reduction and provide a reference function.

[0035] Furthermore, the first cantilever 11 is specifically divided into a first connecting portion 110 and a first limiting portion 111. The first connecting portion 110 is directly connected to the magnetic head cantilever 2 and undertakes the main force transmission function. The first limiting portion 111 is located at the distal end of the first connecting portion 110, and at the connection between the two, a limiting groove 112 is specially machined on the side opposite to the receiving groove 3. The limiting groove 112 creates a local flexible hinge near the rotation axis of the support (i.e., near the pivot mounting area). When the support is subjected to external impact or internal vibration, the limiting groove 112 allows the first cantilever 11, especially its first limiting portion 111, to produce a small elastic deformation, thereby effectively dissipating vibration energy and preventing vibration from being directly transmitted to the tip of the magnetic head cantilever 2, ensuring the stability of the magnetic head's flight altitude.

[0036] In some embodiments, the first limiting portion 111 is designed to be bent and extend a specified length toward the receiving groove 3. This bent structure brings the end of the first limiting portion 111 closer to the voice coil, thereby providing additional radial constraint on the coil and preventing radial movement of the coil under extreme operating conditions. Simultaneously, the width of the first limiting portion 111 is designed to gradually narrow from its root (where it connects to the first connecting portion 110) toward the free end. This achieves a smooth transition in structural stiffness, avoids stress concentration at abrupt width changes, and improves the fatigue life of the first limiting portion 111 under repeated stress. Equivalently, to achieve a similar stiffness transition and weight reduction effect, the sides of the first limiting portion 111 can also adopt a non-linear, arc-shaped narrowing design.

[0037] The second cantilever 10 has a structure similar to but complementary to the first cantilever 11. It includes a second connecting portion 101 and a second limiting portion 102. The second connecting portion 101 is connected to the magnetic head cantilever 2. The second limiting portion 102 is designed to protrude into the receiving groove 3. The protruding second limiting portion 102 and the first limiting portion 101 form a clamping effect on the voice coil within the receiving groove 3 from different directions, jointly constituting multi-directional limiting of the coil in both the axial (vertical direction in the figure) and radial directions. This greatly enhances the overall stability of the coil during operation and reduces the magnetic head positioning error caused by minute displacement of the coil.

[0038] Regarding the size design of the coil limiting groove 4, the width of its top opening is limited to less than or equal to half the width of the entire bottom of the receiving groove 3. The narrower opening acts like a "buckle," effectively restraining the enameled wire lead-out portion after the voice coil is placed into the receiving groove 3, preventing the wire from coming out of the groove or loosening during long-term operation and vibration of the hard drive.

[0039] like Figure 1 As shown, the head cantilever 2 can be further subdivided into a head connecting arm 20 for directly mounting the head, and a cantilever body 21 serving as the main support. The cantilever body 21 has a pivot hole 22 for mounting a rotation pivot, and a protrusion 221 (e.g., by spot welding, riveting, or integral molding) is fixedly connected to the hole wall using precision processes. This protrusion 221, when the bracket is mounted to the hard drive base, cooperates with the corresponding structure of the base to provide axial limiting and prevent circumferential rotation, ensuring the absolute stability of the support bracket's rotation center.

[0040] Furthermore, at least one heat dissipation hole 6 is provided on the cantilever body 21 in the area between the pivot hole 22 and the head connecting arm 20 (i.e., the head mounting end). The introduction of the heat dissipation hole 6 brings several beneficial effects: First, it significantly increases the surface area of ​​the cantilever body 21, improving its heat exchange efficiency with the air inside the hard drive, which helps to dissipate the heat generated during the read / write process of the head and the Joule heat generated when the voice coil is working, preventing heat accumulation from causing thermal deformation of the cantilever and affecting the positioning accuracy of the head; Second, while ensuring the structural strength of key parts (such as around the pivot hole 22 and the connection), the heat dissipation hole 6 effectively reduces the overall weight of the head cantilever 2, which is of positive significance for reducing the load on the voice coil motor that drives it and improving the seek speed; Finally, the well-designed holes can also disrupt the propagation path of vibration waves in the cantilever, and have a certain vibration damping function.

[0041] To further optimize heat dissipation and structure, the heat dissipation holes 6 are preferably arranged along the extension direction of the support bracket (i.e., approximately parallel to the length direction of the magnetic head cantilever 2). Specifically, this may include a first heat dissipation hole 60 and a second heat dissipation hole 61, which are arranged opposite each other. The first heat dissipation hole 60 is closer to the magnetic head mounting end, while the second heat dissipation hole 61 is located between the first heat dissipation hole 60 and the pivot hole 22. The dual-hole layout forms two specific low-stiffness regions on the cantilever body 21, which are alternately arranged with the high-stiffness connection parts, optimizing the stiffness distribution of the cantilever. This results in a lighter weight while improving the overall bending mode and avoiding resonance peaks at a single frequency.

[0042] The length relationships of the first specified distance (from the head end to the first heat dissipation hole 60), the second specified distance (between the first heat dissipation hole 60 and the second heat dissipation hole 61), and the third specified distance (from the second heat dissipation hole 61 to the pivot hole 22) are defined. The second specified distance is the shortest, ensuring sufficient rigidity of the connection bridge between the first and second heat dissipation holes 60 and 61, preventing this area from becoming a mechanical weak point. The first specified distance is moderate, providing necessary rigid support for the head mounting area. The third specified distance is the longest, ensuring ample solid material around the pivot hole 22 to guarantee the absolute stability and precision of the rotation support. In actual manufacturing, the specific values ​​of these distances need to be adjusted according to the cantilever material and hard drive size (e.g., 2.5-inch or 3.5-inch).

[0043] Regarding the shape of the heat dissipation hole 6, a preferred embodiment is proposed: the main body 601 of the first heat dissipation hole 60 and the second heat dissipation hole 61 is approximately oval or rectangular, with its two ends connected to the first arc-shaped portion 602 and the second arc-shaped portion 603, respectively, and the diameter of the first arc-shaped portion 602 is smaller than that of the second arc-shaped portion 603. The smaller diameter first arc-shaped portion 602 is closer to the magnetic head mounting end, where stress is relatively concentrated; the small rounded corner design helps to reduce the stress concentration coefficient and improve fatigue strength. The larger diameter second arc-shaped portion 603 is closer to the middle or root of the cantilever; the large rounded corner design, while ensuring a smooth transition, allows for the removal of more material, achieving a better weight reduction effect. From the perspective of manufacturing process and equivalent function, the overall shape of the heat dissipation hole 6 can also be elliptical, racetrack-shaped, or a rectangular hole with symmetrical rounded corners at both ends.

[0044] This invention also provides a hard drive, which includes a support bracket for the hard drive as described in any of the above embodiments. Due to this optimized support bracket design, the hard drive exhibits improved data read / write speeds, operational stability, shock and vibration resistance, and heat dissipation performance, making it particularly suitable for scenarios with high reliability requirements, such as high-performance computing, enterprise-level storage, or mobile devices.

[0045] In summary, this utility model constructs a high-performance hard drive support bracket solution through the synergistic design of a series of features, including a double cantilever, an integrated raised strip 201 and coil limiting groove 4, a central limiting groove 202, and heat dissipation holes 6 with a specific shape and layout. Those skilled in the art should understand that equivalent substitutions or combinations of the technical features in the above embodiments, without departing from the concept of this utility model, should all be covered within the protection scope of this utility model. For example, the cooperation between the raised strip 201 and the coil limiting groove 4 can, in principle, also be achieved by other forms of interlocking structures; the number and arrangement of the heat dissipation holes 6 can also be increased, decreased, or adjusted according to specific heat dissipation and structural requirements.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A support bracket for a hard disk, used to move the magnetic head under the drive of a drive device, including a coil cantilever and a magnetic head cantilever (2). The coil cantilever is connected to the magnetic head cantilever (2), and the magnetic head cantilever (2) is used to connect the magnetic head; The coil cantilever is provided with a receiving groove (3), which is used to place the voice coil coil of the driving device; characterized in that The coil cantilever includes a first cantilever (11) and a second cantilever (10), with the first cantilever (11) and the second cantilever (10) arranged opposite to each other; A protruding strip (201) is provided at one end of the magnetic head cantilever (2) and between the first cantilever (11) and the second cantilever (10). A coil limiting groove (4) is provided at the top and bottom of the receiving groove (3). The two coil limiting grooves (4) are respectively connected to the two ends of the protruding strip (201). The magnetic head cantilever (2) has a limiting groove (202) in the middle of its length direction on the side wall.

2. The support bracket for a hard disk drive of claim 1 wherein, The first cantilever (11) includes a first connecting part (110) and a first limiting part (111). The first connecting part (110) is connected to the magnetic head cantilever (2). The first limiting part (111) is located at one end of the first connecting part (110) away from the magnetic head cantilever (2). A limiting groove (112) is provided at the connection between the first connecting part (110) and the first limiting part (111). The limiting groove (112) is located on the side of the first cantilever (11) away from the receiving groove (3).

3. The support bracket for a hard disk drive of claim 2 wherein, The first limiting part (111) extends toward the receiving groove (3) and is bent to a specified length, and the width between the two sides of the first limiting part (111) gradually decreases from the first connecting part (110) toward the free end of the first limiting part (111).

4. The support bracket for a hard disk drive of claim 2 wherein, The second cantilever (10) includes a second connecting part (101) and a second limiting part (102). The second connecting part (101) is connected to the magnetic head cantilever (2). The second limiting part (102) is disposed at one end of the second connecting part (101) away from the magnetic head cantilever (2), and the second limiting part (102) protrudes into the receiving groove (3).

5. A hard drive support bracket according to claim 1, characterized in that, The top opening width of the coil limiting groove (4) is less than or equal to half the width of the entire bottom of the receiving groove (3).

6. The support bracket for a hard disk drive of claim 1 wherein, The magnetic head cantilever (2) includes a magnetic head connecting arm (20) and a cantilever body (21) connected to the magnetic head connecting arm (20). The cantilever body (21) is provided with a pivot hole (22) and at least one heat dissipation hole (6). The heat dissipation hole (6) is located between the pivot hole (22) and one end of the magnetic head cantilever (2) connected to the magnetic head. A protrusion (221) is fixedly connected to the wall of the pivot hole (22).

7. The support bracket for a hard disk drive of claim 6 wherein, The heat dissipation hole (6) is provided along the extension direction of the support bracket. The heat dissipation hole (6) includes a first heat dissipation hole (60) and a second heat dissipation hole (61) provided opposite to the first heat dissipation hole (60). The first heat dissipation hole (60) is located between the second heat dissipation hole (61) and one end of the magnetic head cantilever (2) that connects to the magnetic head. The second heat dissipation hole (61) is located between the first heat dissipation hole (60) and the pivot hole (22).

8. The support bracket for a hard disk drive of claim 7 wherein, A first specified distance is formed between the first heat dissipation hole (60) and the end of the magnetic head connected to the magnetic head cantilever (2), a second specified distance is formed between the first heat dissipation hole (60) and the second heat dissipation hole (61), and a third specified distance is formed between the second heat dissipation hole (61) and the pivot hole (22). The length of the second specified distance is less than or equal to the length of the first specified distance, and the length of the first specified distance is less than or equal to the length of the third specified distance.

9. The support bracket for a hard disk drive of claim 7 wherein, The first heat dissipation hole (60) and the second heat dissipation hole (61) each include a main body (601), and a first arc-shaped part (602) and a second arc-shaped part (603) located at both ends of the main body (601), and the diameter of the first arc-shaped part (602) is smaller than the diameter of the second arc-shaped part (603).

10. A hard disk, characterized by Includes a hard drive support bracket as described in any one of claims 1 to 9.

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