JP4791988B2 - Thermal conductor and heat dissipation structure - Google Patents

Description

  The present invention relates to a heat conductor for dissipating heat generated from a heat-generating component to the outside, and a heat-generating component heat dissipation structure using the heat conductor.

Conventionally, as a heat dissipation structure for releasing heat generated from a hard disk drive stored in a metal case to the outside, for example, a rectangular shock absorber is sandwiched between the metal case and the hard disk drive, There is one in which a copper film is sandwiched between the shock absorbing material and a connection surface between the metal case or the hard disk drive so as to connect the hard disk drive (see, for example, Patent Document 1).
JP 2002-352575 A (Page 4, FIGS. 1 to 3)

The heat dissipation structure according to the above conventional example has both the shock absorption and heat dissipation function of the hard disk drive. However, when viewed as a single heat conductor, the shock absorber is used to connect the metal case and the hard disk drive. And a copper film sandwiched between the metal case or the connection surface with the hard disk drive.
Accordingly, since the heat radiating structure is obtained only when these components are assembled, the heat conductor itself lacks versatility.
Therefore, the present invention has been made in view of such a situation, and an object thereof is to provide a heat conductor and a heat-generating component heat dissipation structure that can solve the above-described problems.

To achieve the above technical problem, the invention according to 請 Motomeko 1 is provided between the inner wall surface of the housing to be decorated the device and the device, and the heat of the device is heat transfer to the housing A heat conductor for dissipating heat, comprising: a plate-like portion fixed to the inner wall surface; and a plurality of tongue-like portions that stand up from the plate-like portion and press-contact with the surface of the device The plurality of tongue-shaped portions are arranged concentrically and annularly, and are erected from the plate-shaped portion so that their top portions are directed in the radial direction .
The invention according to claim 2 is a heat conductor that is provided between a device and an inner wall surface of a housing that houses the device, and transfers heat of the device to the housing to dissipate the heat. A heat conductor comprising: a plate-like portion to be fixed; and a plurality of tongue-like portions that stand up from the plate-like portion and press-contact with the surface of the device, wherein the plurality of tongue-like portions Are arranged concentrically and annularly, and stand up from the plate-like portion so that the top portion thereof faces in the circumferential direction .
It is formed.
The invention according to claim 3 is a heat conductor provided between a device and an inner wall surface of a casing in which the device is installed, and transfers heat of the device to the casing to dissipate the heat. A heat conductor comprising: a plate-like portion to be fixed; and a plurality of tongue-like portions that stand up from the plate-like portion and press-contact with the surface of the device, wherein the plurality of tongue-like portions Is arranged concentrically and annularly, and has a first tongue-like portion standing up from the plate-like portion so that its top portion is directed in the radial direction, and concentric with the arrangement of the first tongue-like portion. And a second tongue-like portion that stands up from the plate-like portion so that the top portion thereof faces in the circumferential direction .
According to a fourth aspect of the present invention, in the heat conductor according to any one of the first to third aspects, the tongue-shaped portion is formed by being cut and raised so as to be elastically deformable from the plate-shaped portion. To do.
A fifth aspect of the present invention is the heat conductor according to any one of the first to third aspects, wherein the tongue-like portion is formed of a separate member from the plate-like portion .
The invention according to claim 6 is the heat conductor according to any one of claims 1 to 5 ,
The device is a hard disk drive, and the tongue portion is disposed so as to avoid a step formed on a surface of a housing of the hard disk drive .
According to a seventh aspect of the present invention, there is provided a heat generating component heat dissipating structure in which the heat conductor according to any one of the first to sixth aspects is provided between the device and the housing .

  According to the present invention, the plate-like portion is fastened to the inner wall surface of the casing, and the tongue-like portion standing from the plate-like portion is used as a heat generating component (including a component whose temperature is increased by heat from another heat generating source). The heat conduction path from this device to the housing is formed by pressure contact with the surface of the device, and the heat of this device is transferred to the housing and dissipated to the outside. Therefore, it is possible to provide a heat conductor that is versatile.

Embodiments of a heat conductor according to the present invention will be described below with reference to the accompanying drawings.
(Embodiment 1)
1 and 2 are a perspective view and a front view of a heat conductor according to Embodiment 1 of the present invention, and this heat conductor 1 has a substantially disc shape with a mounting hole 1a formed through the center. A plate-like portion 1b and a plurality of tongue-like portions 1d formed by cutting and raising the plate-like portion 1b in a predetermined arrangement are provided. In other words, the tongue-shaped portion 1d includes eight tongue-shaped portions on the outer peripheral portion formed in a predetermined arrangement (in this example, an interval of 40 degrees) along the peripheral edge of the plate-shaped portion 1b, and the plate-shaped portion 1b. An intermediate portion between the peripheral edge portion and the mounting hole 1a is composed of a tongue-shaped portion formed annularly with the mounting hole 1a as a center and at a predetermined arrangement (in this example, at intervals of 40 degrees). . In this example, each tongue-like portion provided in the outer peripheral portion and each tongue-like portion provided in the intermediate portion are arranged radially along the same center line, and the top portion 1c of each tongue-like portion 1d is radially outward. The plate-like portion 1b is cut and raised in a convex curve shape so as to be elastically deformable from the plate-like portion 1b. Each tongue-like portion 1d is formed by bending a rectangular portion obtained by forming a U-shaped cut line in the plate-like portion 1b to one side. Each tongue-like portion 1d has an inner diameter side as a fixed portion and its top portion 1c is directed in the outer diameter direction.
As long as the material of the heat conductor 1 has a thermal conductivity capable of sufficiently fulfilling the function as the heat conductor 1 as a physical property value thereof, a synthetic resin or metal (copper, aluminum, or spring steel) is used. Etc.) and the like are not particularly limited.
Further, the plate-like portion 1b is formed in a substantially disc shape, but is not particularly limited to a substantially rectangular shape, a polygonal shape other than a quadrangle, an elliptical shape, and the shape of the tongue-like portion 1d is also a convex curve shape. If it can be cut and raised, its shape is not particularly limited.
In addition, the manufacturing method of the heat conductor 1 according to Embodiment 1 is not particularly limited. For example, the attachment hole 1a and the tongue-shaped portion 1d are punched out from a metal band plate material by a progressive die, and the band plate material When it is punched into a disc shape so as to be detached from the tongue, it can be easily manufactured by raising the tongue-like portion 1d substantially simultaneously. Alternatively, the substantially hollow disc-like portion 1b may be a blank, the tongue-like portion 1d may be cut with a laser processing machine, and the tongue-like portion 1d may be erected with a mold. Further, in the case of a synthetic resin having high thermal conductivity, it is preferable to manufacture by injection molding or vacuum molding because of its shape.

Next, FIG. 3 is a longitudinal side view of the heat conductor attached in FIG. 1, and FIG. 4 is a perspective view of the heat conductor attached.
As shown in FIGS. 3 and 4, the heat conductor 1 according to the first embodiment is an electronic device including a hard disk drive A (device) as a heat-generating component, such as a housing of a personal computer or a copying machine. The screw hole b1 provided in advance in a housing of an image forming apparatus such as an MFP (multifunction peripheral) or a desired housing B such as a hard disk case and the mounting hole 1a of the heat conductor 1 are aligned. And each tongue-shaped part 1d faces inward in the housing | casing B, and the heat conductor 1 is screwed and set in the housing | casing B with a screw | thread.
Note that the heat generating component is a concept including a component that heats up by heat from another heat generating element in addition to a component that generates heat.

Next, the side surface of the hard disk drive A is screwed to the housing B while being simultaneously pressed against the surface of the hard disk drive (heat generating component) A against each tongue 1d.
At this time, each tongue-shaped portion 1d is radially arranged such that the top portion 1c faces radially outward, so that when the tongue-shaped portion 1d is pressed against the tongue-shaped portion 1d on the surface of the hard disk drive A, the pressing direction Since the acting force toward the radial direction is not generated (cancelled) against the thrust direction, it can be pressed smoothly.
In this way, as shown in FIG. 3, the plate-like portion 1b is fixed to the inner wall surface of the housing B, and the tongue-like portion 1d standing from the plate-like portion 1b is brought into pressure contact with the surface of the hard disk drive A. Thus, a heat conduction path from the hard disk drive A to the housing B is formed, and the heat of the hard disk drive A can be transferred to the housing B and radiated to the outside.
As described above, since the heat conductor 1 according to the first embodiment includes the tongue-shaped portion 1d that can elastically deform the heat conduction path between the case B and the hard disk drive A, the case B The hard disk drive A can be mounted even if the gap distance is slightly different. Therefore, the heat conductor 1 and the heat-generating component heat dissipating structure are versatile and can be easily attached to the existing hard disk drive A.
In addition, in Embodiment 1, although what provided the plurality of tongue-shaped parts 1d was illustrated, as shown in FIG. 5, one tongue-shaped part 1d may be sufficient. Further, in the first embodiment, as an example of the arrangement of the plurality of tongue-shaped portions 1d, a concentric double ring is arranged in eight equal parts in the circumferential direction. It is not limited to this structure.

(Embodiment 2)
6, FIG. 7, and FIG. 8 are a perspective view of a heat conductor according to the second embodiment, a front view of the heat conductor, and a longitudinal side view of the heat conductor attached.
The heat conductor 2 according to the second embodiment includes a substantially disc-shaped plate-like portion 2b provided with a mounting hole 1a at the center, a peripheral portion of the plate-like portion 2b, a peripheral portion, and the attachment hole 1a. A plurality of fan-like tongue-shaped portions 2d each formed by cutting and raising are provided at the intermediate portion. Ten tongue-shaped portions formed on the peripheral portion are formed at a predetermined circumferential pitch, and six tongue-shaped portions formed on the intermediate portion are formed at a predetermined circumferential pitch.
Each of the heat conductors 2 has a plate-like portion such that the top portion 2c faces the circumferential direction of a fan-like or rectangular portion obtained by cutting an appropriate portion of the tongue-like portion 2d into an L-shape or a substantially U-shape. It is formed by standing on one side of 2b. That is, each tongue-like portion 2d is annularly arranged with the mounting hole 1a as a center, and is formed by cutting and raising from the plate-like portion 2b into a convex curve shape so as to be elastically deformed so that the top portion 2c faces the circumferential direction.
The tongue-like portion 2d has a cut and raised pattern in which the peripheral portion of the plate-like portion 2b (hereinafter referred to as “outside”) and the substantially intermediate portion between the peripheral portion and the mounting hole 1a (hereinafter referred to as “inside”). And is different.
That is, as shown in FIG. 7, the outer tongue-shaped portion 2d is cut and raised up and down from the vertical center line passing through the center of the mounting hole 1a (four in total), and One that was cut and raised counterclockwise to the right of the vertical center line (three in total), and one that was cut and raised clockwise to the left of the vertical center line (three in total) It consists of

As shown in FIG. 7, the inner tongue-shaped portion 2 d is turned up and down (two in total) and is turned away from each other on the left and right of the vertical center line. It is composed of a counterclockwise direction and a clockwise part (four in total). The cut and raised pattern is not limited to this.
Each of the outer and inner tongue portions 2d avoids a step formed on the housing surface of the hard disk drive A as shown in FIG. 8 in order to ensure the close contact with the housing surface of the hard disk drive A. It is arranged. That is, the inner tongue-shaped portion 2d is brought into pressure contact with the higher convex surface b2 formed on the housing surface of the hard disk drive A, and the outer tongue-shaped portion 2d is pressed against the first lower surface b3 that forms the convex surface b2. It is supposed to collide.
As illustrated in FIG. 4, the convex surface b2 has a substantially circular shape. Therefore, the outer tongue-shaped portion 2d has a layout corresponding to the substantially circular convex surface b2.
Accordingly, the arrangement of the tongue-shaped portion 2d is not particularly limited as long as it is a position where the degree of close contact with the housing surface of the hard disk drive A is secured according to the shape of the convex surface b2.
In addition, since the material of the heat conductor 2 which concerns on this Embodiment 2, its manufacturing method, an assembly procedure, etc. are the same as Embodiment 1, the overlapping description is abbreviate | omitted.

(Embodiment 3)
9, FIG. 10, and FIG. 11 are a perspective view of a heat conductor according to a third embodiment, a front view of the heat conductor, and a longitudinal side view of the heat conductor attached.
The heat conductor 3 according to the third embodiment includes a substantially disc-like plate-like portion 3b provided with a mounting hole 1a at the center, and an inner tongue-like portion (first tongue-like shape) exemplified in the first embodiment. Part) An example composed of an inner tongue 1d composed of 1d and an outer tongue 2d (second tongue) 2d composed of the outer tongue 2d illustrated in the second embodiment (tongue) The shape portions 1d and 2d may be reversed in layout, and the manufacturing method, assembly procedure, and the like are the same as those in the first embodiment.
As mentioned above, although the heat conductor which concerns on this Embodiment was demonstrated, embodiment mentioned above shows an example of suitable embodiment of this invention, and this invention is not limited to it, Various modifications can be made without departing from the scope of the invention.
For example, in the present embodiment, each tongue-like portion 1d is cut and raised from the plate-like portion 1b. However, as shown in FIG. 12, the tongue-like portion 3d as a separate member from the plate-like portion 1b is formed as a plate. For example, the shape portion 1b may be integrated by welding by spot welding or adhesion by an adhesive.
Further, in the present embodiment, the plate-like portion 1b and the housing B are screwed together, but adhesion and fitting with an adhesive (for example, a boss is provided in the housing B and fitted into the mounting hole 1a). As long as the plate-like portion is adhered to the housing B such as sticking with a double-sided tape, the mode is not particularly limited.
Further, when the gap distance between the housing B and the hard disk drive A is larger than that shown in the figure, for example, the number of tongue-shaped portions and the protruding length of the cut-and-raised portion may be changed according to the separation distance. In the case of the tongue-shaped portion 3d having a different member configuration as shown, the length shape may be appropriately changed.
In the present embodiment, the hard disk drive is exemplified as the device to be cooled (heat generating component). However, among the members constituting the electronic device, the hard disk drive is used for various heat generating components such as electronic components having high heat generation and electric components. Is also good.

2 is a perspective view of a heat conductor according to Embodiment 1. FIG. It is a front view of the heat transfer body of FIG. It is a vertical side view of the attachment state of the heat conductor of FIG. It is a perspective view of the attachment state of the heat transfer body of FIG. It is the perspective view which showed the other aspect of the heat conductor which concerns on Embodiment 1. FIG. 6 is a perspective view of a heat conductor according to Embodiment 2. FIG. It is a front view of the heat conductor of FIG. It is a vertical side view of the attachment state of the heat conductor of FIG. 6 is a perspective view of a heat conductor according to Embodiment 3. FIG. It is a front view of the heat conductor of FIG. It is a vertical side view of the attachment state of the heat conductor of FIG. It is the fragmentary perspective view which showed the other aspect of the tongue-shaped part.

Explanation of symbols

1, 2, 3 Thermal conductor, 1a Mounting hole, 1b, 2b, 3b Plate-like part, 1c, 2c Top part, 1d, 2d, 3d Tongue part, A hard disk drive, B housing, b1 screw hole, b2 Convex surface

Claims (7)

A plate-shaped portion that is provided between a device and an inner wall surface of a housing that houses the device, and that is attached to the inner wall surface in a heat conductor that transfers heat of the device to the housing and dissipates the heat. And a heat conductor comprising a plurality of tongue-shaped portions that stand up from the plate-shaped portion and press-contact with the surface of the device,
The plurality of tongue-shaped portions are arranged concentrically and annularly, and are erected from the plate-shaped portion so that the top portions thereof are directed in the radial direction . A plate-shaped portion that is provided between a device and an inner wall surface of a housing that houses the device, and that is attached to the inner wall surface in a heat conductor that transfers heat of the device to the housing and dissipates the heat. And a heat conductor comprising a plurality of tongue-shaped portions that stand up from the plate-shaped portion and press-contact with the surface of the device,
The plurality of tongue-shaped portions are arranged concentrically and annularly, and are erected from the plate-shaped portion so that their top portions face in the circumferential direction . A plate-shaped portion that is provided between a device and an inner wall surface of a housing that houses the device, and that is attached to the inner wall surface in a heat conductor that transfers heat of the device to the housing and dissipates the heat. And a heat conductor comprising a plurality of tongue-shaped portions that stand up from the plate-shaped portion and press-contact with the surface of the device,
The plurality of tongue-shaped portions are disposed concentrically and annularly, and a first tongue-shaped portion standing up from the plate-shaped portion so that a top portion thereof is directed in a radial direction, and the first tongue-shaped portion A second tongue-like portion that is arranged annularly on the inner diameter side so as to be concentric with the arrangement, and that rises from the plate-like portion so that the top portion thereof faces in the circumferential direction. Characteristic heat conductor. The heat conductor according to any one of claims 1 to 3, wherein the tongue portion is formed by being cut and raised from the plate portion so as to be elastically deformable . The heat conductor according to any one of claims 1 to 3, wherein the tongue-like portion is formed of a member separate from the plate-like portion . The device is a hard disk drive, the tongues any one of claims 1 to 5, characterized in that it is arranged so as to avoid the formed in the housing surface of the hard disk drive step The heat conductor according to item . A heat-generating component heat dissipating structure, wherein the heat conductor according to any one of claims 1 to 6 is provided between the device and the housing .

Images