Hard disk mounting bracket and hard disk

Abstract

The utility model discloses a hard disk mounting bracket and a hard disk, and belongs to the technical field of information storage. The first cantilever and the second cantilever are connected to one end, far away from the magnetic head connecting arm, of the cantilever main body, and an accommodating groove for accommodating a voice coil is formed among the first cantilever, the second cantilever and the cantilever main body; the cantilever body is provided with a pivot hole, the hole wall of the pivot hole is provided with an insertion protrusion protruding towards the interior of the hole, and a limiting platform is formed on one section of the hole wall of the pivot hole. According to the utility model, a preset and accurate installation position is provided for the voice coil through the accommodating groove formed by the enclosing of the first cantilever, the second cantilever and the cantilever main body. And the three sides of the coil are reliably limited by the metal bracket, so that the uniformity and long-term stability of an air gap between the coil and the permanent magnet are ensured, the linearity and stability of driving force output are ensured, the micro-motion possibility of the coil in the groove is eliminated, and the positioning accuracy of the coil reaches a new level.

Description

Technical Field

[0001] This utility model relates to the technical field of information storage, and in particular to a hard disk mounting bracket and a hard disk. Background Technology

[0002] As a mainstream data storage device, the core function of a hard disk drive (HDD) is to accurately read and write data on a high-speed rotating disk. This relies on the head assembly to quickly and accurately position the target track. The head mounting bracket is the core actuating component that supports multiple head suspensions and drives their movement; its performance directly determines key indicators of the hard drive, such as seek speed, positioning accuracy, reliability, and power consumption.

[0003] Traditional hard drive mounting brackets typically consist of a main body that engages with a rotating pivot, a connecting arm for mounting multiple head suspensions, and a pair of cantilever arms for securing the voice coil motor coils. The voice coil motor is the power source that drives the bracket's rotation; when its coil is energized, it generates a Lorentz force in a permanent magnetic field, which in turn drives the entire head assembly to oscillate.

[0004] However, with the continuous increase in hard drive storage density and the acceleration of seek speed, traditional bracket structures have gradually shown limitations in many aspects:

[0005] Traditional designs often use simple clamping or adhesive methods to fix the coil to the cantilever of the bracket. This method requires high assembly precision and makes it difficult to ensure the long-term uniformity of the air gap between the coil and the permanent magnet. After long-term operation or impact, the coil may experience slight displacement or deformation, resulting in uneven driving force, introducing additional positioning errors and vibrations, and affecting track tracking capabilities under high-density conditions. The bracket is mounted on the pivot of the hard drive base through a central pivot hole. Common connection methods include interference fit or locking with pressure plate screws. Interference fit is extremely sensitive to the machining precision of parts; the pressing process may damage the bearings or the bracket itself, and fretting wear may occur under the cyclic stress of high-frequency start-stop, leading to loosening of the connection. Screw locking increases the number of parts and assembly steps, and there is a risk of screw loosening. Any slight slippage or gap at any connection point will directly translate into positioning noise of the read / write head, severely limiting the improvement of seek accuracy. Utility Model Content

[0006] The main purpose of this utility model is to provide a hard drive mounting bracket and a hard drive, aiming to solve the technical problem that traditional bracket structures are gradually showing limitations in many aspects as hard drive storage density continues to increase and seek speed accelerates.

[0007] To achieve the aforementioned objectives, the first aspect of this utility model provides a hard drive mounting bracket, comprising:

[0008] Magnetic head connecting arm;

[0009] The main body of the cantilever is connected at one end to the magnetic head connecting arm;

[0010] The first cantilever and the second cantilever are connected to the end of the cantilever body away from the magnetic head connecting arm, and the first cantilever, the second cantilever and the cantilever body form a receiving groove for accommodating the voice coil coil.

[0011] The cantilever body is provided with a pivot hole, and the wall of the pivot hole is provided with a plug protrusion protruding into the hole. The plug protrusion protrudes radially along the pivot hole, and a section of the pivot hole wall forms a limit platform.

[0012] The first cantilever includes a first connecting portion connected to the cantilever body and a first limiting portion located at the free end of the first connecting portion;

[0013] The second cantilever includes a second connecting portion connected to the cantilever body, and a second limiting portion located at the free end of the second connecting portion;

[0014] A first coil limiting groove is provided at the corner where the first connecting part connects to the cantilever body; and / or, a second coil limiting groove is provided at the corner where the second connecting part connects to the cantilever body;

[0015] The first cantilever and the second cantilever are axially symmetrical.

[0016] Optionally, the cantilever body is also provided with heat dissipation holes, which are located between the pivot hole and the magnetic head connecting arm.

[0017] Optionally, the heat dissipation hole includes a main body extending along the length direction of the cantilever body, and a first arc-shaped part and a second arc-shaped part respectively connected to both ends of the main body;

[0018] The second arc-shaped portion is closer to the magnetic head connecting arm than the first arc-shaped portion.

[0019] Optionally, the surface of the insertion protrusion that contacts the pivot hole wall is a corrugated surface.

[0020] Optionally, the sidewall of the cantilever body is provided with limiting protrusions and limiting grooves;

[0021] The limiting protrusion is disposed on the side wall near the first cantilever, and the limiting groove is disposed at the middle of the side wall of the cantilever body along its length direction.

[0022] Optionally, there is a first distance between the heat dissipation hole and the magnetic head connecting arm, and a second distance between the heat dissipation hole and the pivot hole, wherein the first distance is smaller than the second distance.

[0023] The second aspect of this utility model provides a hard drive, including the aforementioned hard drive mounting bracket.

[0024] The beneficial effects of this utility model are:

[0025] 1. This utility model relates to a hard drive mounting bracket and hard drive, which integrates the head connecting arm, cantilever body, and first and second cantilever arms into a single design, specifically forming a receiving groove for accommodating the voice coil coil. This not only simplifies the number of components and reduces manufacturing costs, but more importantly, it constructs a high-rigidity, high-stability force transmission platform. The driving force generated by the voice coil motor can be efficiently and lag-free transmitted to the head end through the rigid cantilever body and connecting arm, significantly improving the response speed and bandwidth of the servo system and laying the foundation for rapid seek. Specifically, the receiving groove formed by the first cantilever, second cantilever, and cantilever body provides a preset and precise installation position for the voice coil coil. This design simplifies coil assembly from "aligning and fixing" to "placing and confirming," greatly improving assembly efficiency and consistency. The coil is reliably limited on three sides by a metal bracket, ensuring the uniformity and long-term stability of the air gap between it and the permanent magnet, thereby guaranteeing the linearity and smoothness of the driving force output. Furthermore, by setting a coil limiting groove at the corner of the cantilever connection, additional constraints are applied to the corner part where the coil is most prone to loosening, eliminating the possibility of micro-movement of the coil in the groove, thus enabling the coil positioning accuracy to reach a new level.

[0026] 2. The hard drive mounting bracket and hard drive of this utility model, through the axially symmetrical design of the first and second cantilever arms, give the bracket inherent mass balance, reducing unbalanced forces and vibrations caused by mass eccentricity at the source. Combined with the heat dissipation hole design biased towards the read / write head end, the mass distribution of the bracket can be finely adjusted, helping to adjust the center of gravity of the entire component closer to the center of rotation. In addition, the stable pivot connection and high-rigidity overall structure also increase the natural frequency of the system, keeping it away from common operating excitation frequencies. This significantly reduces vibration and noise during hard drive operation, providing a smoother operating platform for the read / write head, which is crucial for achieving higher track density. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the hard drive mounting bracket of this utility model;

[0028] Figure 2 This is a schematic diagram of the lower structure of the hard drive mounting bracket of this utility model;

[0029] Figure 3 This is a partial structural diagram of the pivot hole of the hard drive mounting bracket of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. First cantilever; 101. First limiting part; 102. First connecting part; 103. First coil limiting groove; 11. Second cantilever; 111. Second limiting part; 112. Second connecting part; 113. Second coil limiting groove;

[0032] 20. Magnetic head connecting arm;

[0033] 30. Cantilever body; 31. Pivot hole; 311. Insertion protrusion; 312. Limiting platform; 32. Limiting protrusion; 33. Limiting groove;

[0034] 34. Heat dissipation holes; 341. Main body; 342. First arc-shaped part; 343. Second arc-shaped part;

[0035] 40. To accommodate the groove.

[0036] 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

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Reference Figures 1-3 The main function of the hard drive mounting bracket of this utility model is to serve as a support base for the head suspension and to connect multiple head suspension assemblies to a common rotating pivot. Driven by a voice coil motor, the entire assembly rotates, enabling the head to accurately seek the designated track on the disk.

[0041] The hard drive mounting bracket includes: a head connecting arm 20 for connecting and securing multiple head suspensions; a cantilever body 30 serving as the main support and rotation center, one end of which is fixedly connected to the head connecting arm 20; and a pair of first cantilever arms 10 and second cantilever arms 11 extending from the other end of the cantilever body 30. The first cantilever arms 10, second cantilever arms 11, and cantilever body 30 together form a receiving groove 40, which is specifically designed to receive and embed the voice coil motor coil. The integrated receiving groove 40 not only provides a precise mounting position for the coil but also simplifies the assembly process. A pivot hole 31 is provided at the center of the cantilever body 30 for mounting the entire bracket onto the pivot of the hard drive base. In particular, the pivot hole 31 has a protruding insertion protrusion 311 and a limiting platform 312 on its wall to achieve a secure, slip-free fixation between the bracket and the pivot.

[0042] The head connecting arm 20 serves as the interface and force transmission link between this bracket and the head suspension assembly. Its function is to integrate multiple independent head suspensions (typically containing read / write heads, micro-sliders, and flexible circuitry) into a single component capable of coordinated movement under the same drive. By fixing multiple suspensions to the same head connecting arm 20, the synchronization of all heads during seek motion is ensured, simplifying the drive control logic. The head connecting arm 20 is typically designed with multiple mounting holes or slots for reliable connection to the base plate of the head suspension via riveting, laser welding, or bonding. Its structural strength and rigidity directly affect the microscopic accuracy of head positioning. In this design, it is integrally formed with the cantilever body 30, eliminating the connection interface, improving overall rigidity and resonant frequency, and helping to suppress high-frequency vibrations.

[0043] The cantilever body 30 is the structural center and mechanical skeleton of the entire support. It undertakes multiple functions: First, as a bridge connecting the magnetic head connecting arm 20 and the first cantilever 10 and the second cantilever 11, it efficiently transmits the driving force of the voice coil motor to the magnetic head end; second, the pivot hole 31 inside it is the fulcrum for the rotational movement of the support; third, its own structural design (such as the heat dissipation hole 34 and the limiting protrusion 32 described later) also takes into account heat dissipation, balance, and auxiliary positioning. Designing it and the magnetic head connecting arm 20 as an integral structure (usually formed by precision stamping or etching) avoids the assembly errors and additional connection stiffness loss caused by segmented structures, making the force transmission path from the voice coil motor to the magnetic head more direct and more rigid, thereby improving the response speed and positioning accuracy of the servo system.

[0044] The first cantilever 10 and the second cantilever 11 essentially form part of the frame of the voice coil motor stator. Together with the cantilever body 30, they form a U-shaped or concave receiving groove 40, providing a tailored mounting space for the rectangular voice coil coil. This structure tightly surrounds and confines the coil within the receiving groove 40, offering multiple benefits:

[0045] After the coil is embedded in the groove, its position in the plane (X and Y directions) is defined by three side walls (the inner side wall of the cantilever body 30, and the opposing inner walls of the first cantilever 10 and the second cantilever 11), ensuring the uniformity and consistency of the air gap between the coil and the permanent magnet. The coil is no longer suspended or fixed on only one side, but is surrounded and supported by the three parts of the bracket from the sides and rear, significantly improving the overall rigidity of the coil-bracket assembly and resisting deformation caused by acceleration changes or external impacts. Due to the precise and stable positioning, the air gap between the coil and the permanent magnet can be designed to be smaller and kept constant, which helps to enhance the magnetic field strength, increase the force constant of the motor, thereby obtaining a greater driving force under the same current, or reducing power consumption under the same driving force.

[0046] During hard drive assembly, operators or automated equipment can easily place the coil into the pre-designated receiving groove 40, followed by subsequent fixing (such as adhesive application), improving assembly efficiency and consistency. When placing the coil into the receiving groove 40, attention should be paid to the direction of the coil leads to avoid the leads being pressed by the cantilever or excessively bent. Typically, there are dedicated wire grooves or clearance spaces designed in this way. If the coil size is too tight against the receiving groove 40, it may cause installation difficulties or damage to the coil. If it is too loose, it will not provide effective limiting.

[0047] In some embodiments, the cantilever body 30 is provided with a pivot hole 31, the wall of the pivot hole 31 is provided with an insertion protrusion 311 protruding into the hole, the insertion protrusion 311 protrudes radially along the pivot hole 31, and a section of the wall of the pivot hole 31 forms a limiting platform 312.

[0048] Understandably, the radially protruding structure of the insertion protrusion 311 causes interference between the protrusion and the outer surface of the pivot when the cylindrical pivot is pressed into the pivot hole 31. This interference fit produces two effects: first, it provides radial preload, eliminating bearing clearance and improving the radial stiffness of the rotating system; second, if the pivot surface is designed with corresponding grooves (such as a flat keyway or a local plane), the insertion protrusion 311 can be embedded in it like a key, forming a very reliable mechanical lock that prevents circumferential rotation. Even without a dedicated groove, the protrusion may leave marks on softer pivot materials (such as certain alloys) during the pressing process, forming a self-locking mechanism.

[0049] The limiting platform 312 is a planar area machined into a portion of the wall of the pivot hole 31. Its core function is to provide axial positioning and resist overturning torque. When the bracket is mounted on the pivot, a corresponding plane on the pivot (e.g., provided by a stepped surface on the pivot or a separate washer) will fit tightly against the limiting platform 312. This large surface contact effectively resists the torque (overturning torque) generated by the voice coil motor drive force, which attempts to tilt the bracket about the radial axis, ensuring that the bracket remains perpendicular to the disk plane during high-speed start-stop seek movements. This is crucial for ensuring stable head flight attitude.

[0050] The insertion protrusion 311 primarily addresses circumferential torsion (torque transmission) and radial fixation issues, while the limiting platform 312 primarily addresses axial positioning and anti-tipping issues. Working together, they achieve full-degree-of-freedom constraint on the support at the pivot, completely restricting translation in the X, Y, and Z directions and rotation around the X, Y, and Z axes (except for the designed rotational degree of freedom around the pivot center Z axis). This establishes an extremely stable, slip-free, and highly rigid rotational motion reference. This is crucial for reducing positioning errors and improving tracking accuracy in modern high-density hard drives.

[0051] In some embodiments, the first cantilever 10 includes a first connecting portion 102 and a first limiting portion 101; the second cantilever 11 includes a second connecting portion 112 and a second limiting portion 111. The first connecting portion 102 and the second connecting portion 112 are directly connected to the cantilever body 30, and their design mainly considers structural strength and force transmission. Sufficient width and appropriate transition radii can reduce stress concentration at this location and improve the fatigue life of the cantilever during high-speed swinging.

[0052] The first limiting part 101 and the second limiting part 111 act directly on the voice coil coil. Their inner surfaces form the lateral boundaries of the receiving groove 40, which directly restricts the lateral movement of the coil. Separating the limiting part from the connecting part allows for individual optimization of the limiting part; for example, the limiting part can be thickened to increase its support stiffness for the coil, while the connecting part can be optimized for flexibility or weight. Furthermore, the end face shape of the limiting part (e.g., whether or not a hook-like structure is designed) can be used to temporarily hold the coil during assembly, facilitating subsequent fixing operations.

[0053] In some embodiments, the free ends of the first limiting part 101 and the second limiting part 111 can be further bent inward to form a small hook-shaped structure, thereby also constraining the coil in the Z direction (perpendicular to the support plane) to prevent the coil from jumping out of the groove during severe vibration or impact. Furthermore, the bending must be designed not to obstruct the insertion of the coil.

[0054] The shapes of the first limiting part 101 and the second limiting part 111 may not be exactly the same. For example, one of them may be designed to be longer to cover more of the coil, or to provide a special notch for the coil leads.

[0055] Furthermore, the first coil limiting groove 103 and the second coil limiting groove 113 make the corner profile of the coil more closely match the groove profile of the bracket, further eliminating the slight rotational or translational degrees of freedom that the coil may have within the groove. This avoids direct contact between the coil's enameled wire and sharp metal corners, reducing the risk of enamel damage due to contact pressure or vibration friction. The presence of the grooves is equivalent to providing a small buffer space for the coil at the corner.

[0056] By imposing additional constraints on the corners where the coil is most difficult to fix, the long-term stability of the coil's position within the groove is significantly improved, making it less prone to creep or displacement even under temperature variations or long-term vibration conditions.

[0057] Furthermore, in addition to creating grooves, another functionally equivalent approach is to add a small inwardly protruding pressure point or rib at the corner. When the coil is installed, this pressure point will slightly press into the gap of the coil winding or apply pressure to its side, which can also play an additional limiting role.

[0058] A heat dissipation hole 34 is provided on the cantilever body 30 between the pivot hole 31 and the magnetic head connecting arm 20. During the frequent start-stop seek operation of the voice coil motor, the coil and magnetic circuit will generate heat. Some of this heat will be conducted into the bracket.

[0059] The ventilation holes 34 located at the cantilever body 30 serve as the primary path for heat conduction from the voice coil motor area to the head connecting arm 20 and the head end. These ventilation holes 34 increase the heat dissipation surface area, facilitating convective heat exchange with the air flowing within the hard drive cavity (despite its thinness). More importantly, they alter the heat conduction path. The presence of these holes increases thermal resistance, effectively preventing or reducing further heat transfer to the temperature-sensitive head end. The head suspension and head slider are highly sensitive to temperature gradients; localized thermal expansion can alter the head's flight altitude and attitude. By creating ventilation holes 34 at critical locations, the temperature in the head connecting arm 20 region can be reduced, thereby minimizing distortion caused by uneven heating of the support and maintaining stable head flight.

[0060] The addition of ventilation holes 34 reduces the weight of the bracket, which helps improve the response speed of the servo mechanism. A well-designed layout of the holes can also help adjust the bracket's center of gravity, improving its dynamic balance.

[0061] The number of heat dissipation holes 34 can be multiple. For example, a row of small holes arranged along the length of the cantilever body 30 may have a more uniform heat dissipation and weight reduction effect than a single large hole, and will reduce the stiffness of the body less.

[0062] The shape of the heat dissipation hole 34 can also be circular, elliptical, oblong, or rhomboid. Different shapes will affect stress distribution and airflow disturbance.

[0063] In addition to openings, another way to enhance the heat dissipation capacity of this area is to attach a layer of material with a high thermal conductivity (such as a graphene patch or a metal coating) to the surface of this part of the cantilever body 30, so that heat can be diffused laterally to a larger surface for heat dissipation more quickly.

[0064] The heat dissipation hole 34 includes a main body 341 and two arc-shaped portions 342 and 343 at both ends, with the second arc-shaped portion 343 being closer to the magnetic head connecting arm 20. The elongated shape of the hole can cause severe stress concentration at its sharp corners, which are the origin points of fatigue cracks. Designing the two ends as the first arc-shaped portion 342 and the second arc-shaped portion 343 allows for a smooth transition, significantly reducing the stress concentration factor and improving the structural reliability and lifespan of the support under long-term high-frequency vibration.

[0065] Specifically, the second arc-shaped portion 343 (near the head end) is positioned closer to the head connecting arm 20 than the first arc-shaped portion 342 (near the pivot end) (i.e., the first distance < the second distance). This causes the overall position of the heat dissipation hole 34 to be offset towards the head connecting arm 20, further enhancing the thermal barrier effect. This makes the solid heat conduction path from the voice coil motor region to the head connecting arm 20 narrower and more tortuous, thus more effectively blocking heat flow to the head end. Simultaneously, the hole's offset towards the head end also makes the weight reduction effect in that area more pronounced, which is beneficial for adjusting the center of gravity and may be advantageous for suppressing certain vibration modes.

[0066] The curved portion, especially the larger second curved portion 343, may have a specific guiding effect on the weak airflow field inside the hard disk cavity, which helps to "pump" hot air out of the hole or introduce cooler air.

[0067] In some embodiments, the surface of the insertion protrusion 311 that contacts the wall of the pivot hole 31 is a corrugated surface. The corrugated surface is equivalent to adding microscopic waves to the insertion protrusion 311. When the pivot is pressed in, the corrugated structure is more likely to undergo plastic deformation or embed into the pivot material (if the pivot has low hardness), thereby providing a larger actual contact area and mechanical interlocking force in both the radial and circumferential directions than a smooth surface.

[0068] The surface where the insertion protrusion 311 contacts the wall of the pivot hole 31 is not limited to a "corrugated surface". Any structure that can increase roughness and provide micro-mechanical engagement can be regarded as an equivalent replacement. For example, it can be a fine mesh pattern, a rough surface formed by sandblasting, a series of tiny pits or protrusions array, or even a fused rough layer formed by local laser texturing on the surface.

[0069] In some embodiments, the cantilever body 30 has a limiting protrusion 32 and a limiting groove 33 on its sidewall. The limiting protrusion 32 is close to the first cantilever 10, and the limiting groove 33 is located in the middle of the sidewall. The limiting protrusion 32 provides a second layer of anti-torsion protection in the extreme case of failure of the insertion protrusion 311. Its practical function is to prevent incorrect assembly and provide coarse positioning. On automated assembly lines, robots or fixtures can detect the position of the protrusion to confirm whether the bracket is correctly oriented, avoiding incorrect assembly (if incorrectly assembled, the magnetic head will face the wrong direction). Simultaneously, during the process of fitting the bracket onto the pivot, the engagement of the protrusion with the base groove provides initial guidance and radial limiting.

[0070] The limiting groove 33 is used to accommodate protrusions from other components (such as a magnet assembly or a retaining clip). Its functions include providing necessary physical clearance for densely packed components inside the hard drive and preventing motion interference. One side of the groove can contact the mating part to help determine the axial mounting depth of the bracket on the pivot. In some demanding designs, a miniature accelerometer can be installed near the limiting groove 33 to monitor bracket vibration and achieve active vibration suppression.

[0071] Furthermore, by arranging the limiting protrusion 32 and the limiting groove 33 on different side walls and at different positions (one near the end and one in the middle), the limited side wall space is utilized to the maximum extent, achieving multifunctional integration without excessively weakening the rigidity of the main structure.

[0072] Axial symmetry refers to the mirror symmetry of the first cantilever 10 and the second cantilever 11 with respect to a plane of symmetry passing through the centerline of the cantilever body 30 and parallel to the plane of the support. When the voice coil motor drives the support to rotate, the symmetrical cantilever structure means that the mass distribution is basically symmetrical with respect to the axis of rotation (pivot), which helps to reduce or eliminate centrifugal force and unbalanced torque caused by mass eccentricity. This is crucial for high-speed seek-through, especially for smoothness during start-up and shutdown, and can effectively reduce vibration and noise. The symmetrical design makes the deformation characteristics and vibration modes of the two cantilevers tend to be consistent under stress, which is beneficial for predicting and controlling the dynamic response of the entire component.

[0073] Symmetrical parts are easier to design in CAD, mold making, and stamping / etching processes, which helps to reduce costs and improve production consistency.

[0074] In some embodiments, the first distance between the heat dissipation hole 34 and the head connecting arm 20 is smaller than the second distance between it and the pivot hole 31. This distance relationship explicitly guides the layout strategy of the heat dissipation hole 34. The smaller first distance means that the thermal barrier boundary of the heat dissipation hole 34 is very close to the inlet of the head connecting arm 20, which can dissipate or block heat to the maximum extent before it reaches the head assembly. Removing more material near the head end (because the hole is more off-center) can "compensate" for the mass of the head connecting arm 20 itself, helping to align the center of mass of the entire assembly closer to the center of rotation, which has a positive effect on improving dynamic balance and reducing rotational inertia (improving response speed).

[0075] This utility model also includes a hard disk, comprising the drive bracket of the hard disk described in any of the above embodiments.

[0076] Understandably, a hard drive that employs the aforementioned optimized support structure may, but is not limited to, have: higher head positioning and tracking accuracy, more reliable pivot connection, lower head operating temperature, more stable flight attitude, lower operating vibration and noise, and potentially longer service life and higher reliability.

[0077] In the manufacturing and assembly process of hard drives, the ease of assembly of the bracket (the coil is easy to put into the groove, and the bracket and pivot are quickly and accurately positioned by the plug-in protrusion 311 and the limiting platform 312) can also improve production efficiency and product consistency, and reduce manufacturing costs.

[0078] 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 hard disk mounting bracket, characterized by comprising: The hard disk mounting bracket comprises: a magnetic head connecting arm (20); a cantilever main body (30) connected to one end of the magnetic head connecting arm (20); a first cantilever (10) and a second cantilever (11) connected to the other end of the cantilever main body (30) away from the magnetic head connecting arm (20), and a containing groove (40) for containing a voice coil is formed between the first cantilever (10), the second cantilever (11) and the cantilever main body (30); a pivot hole (31) is arranged on the cantilever main body (30), a plug-in protrusion (311) is arranged on the hole wall of the pivot hole (31) and protrudes into the hole, the plug-in protrusion (311) protrudes in the radial direction of the pivot hole (31), and a part of the hole wall of the pivot hole (31) forms a limiting platform (312); the first cantilever (10) comprises a first connecting part (102) connected to the cantilever main body (30) and a first limiting part (101) located at the free end of the first connecting part (102); the second cantilever (11) comprises a second connecting part (112) connected to the cantilever main body (30) and a second limiting part (111) located at the free end of the second connecting part (112); a first coil limiting groove (103) is arranged at the corner where the first connecting part (102) is connected to the cantilever main body (30); and / or, a second coil limiting groove (113) is arranged at the corner where the second connecting part (112) is connected to the cantilever main body (30); the first cantilever (10) and the second cantilever (11) are axially symmetrical.

2. The hard disk mounting bracket of claim 1, wherein, a heat dissipation hole (34) is further arranged on the cantilever main body (30), and the heat dissipation hole (34) is located between the pivot hole (31) and the magnetic head connecting arm (20).

3. The hard disk mounting bracket of claim 2, wherein, the heat dissipation hole (34) comprises a main body part (341) extending in the length direction of the cantilever main body (30), and a first arc-shaped part (342) and a second arc-shaped part (343) connected to the two ends of the main body part (341), respectively; wherein the second arc-shaped part (343) is closer to the magnetic head connecting arm (20) than the first arc-shaped part (342).

4. The hard disk mounting bracket of claim 1, wherein, the surface where the plug-in protrusion (311) is connected to the hole wall of the pivot hole (31) is a corrugated surface.

5. The hard disk mounting bracket of claim 1, wherein, a limiting protrusion (32) and a limiting recess (33) are arranged on the side wall of the cantilever main body (30); the limiting protrusion (32) is arranged on the side wall close to the first cantilever (10), and the limiting recess (33) is arranged in the middle of the length direction of the side wall of the cantilever main body (30).

6. The hard disk mounting bracket of claim 2, wherein, the first distance between the heat dissipation hole (34) and the magnetic head connecting arm (20) is smaller than the second distance between the heat dissipation hole (34) and the pivot hole (31).

7. A hard disk, characterized by The hard disk mounting bracket comprises: any one of claims 1 to 6.

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