TW201804683A - Hard disk drive unit and electronic device - Google Patents

Abstract

Provided are a hard disk drive (HDD) unit and electronic device that have high maintainability. In one embodiment of the present invention, the HDD unit includes an HDD case and an HDD holder. The HDD case is provided with an HDD tray and an HDD cover. The HDD tray is configured such that an HDD can be placed thereon. The HDD cover is disposed on the HDD placed on the HDD tray and can be switched between a closed state where the HDD is restricted and an open state where the top of the HDD tray is open. The HDD cover has an energizing part that elastically contacts the top of the HDD in the closed state. The HDD holder can house the HDD case and supports the HDD case such that the HDD case is capable of reciprocal movement along a prescribed first direction.

Description

HDD unit and electronic equipment

The present invention relates to an HDD unit and an electronic device.

For example, in an electronic device, an HDD unit is provided in a casing. The HDD unit includes a hard disk drive (HDD), an HDD tray that holds the HDD, and an HDD bracket that detachably houses the HDD tray. The HDD unit is, for example, configured to be disposed inside the front portion of the casing, and to extract the HDD from a slit opening formed in the front portion of the casing. The HDD is, for example, screw-locked to the HDD tray at a plurality of positions.

One aspect of the present invention is to provide an HDD unit and an electronic device with high maintenance workability.

An aspect of the HDD unit of the present invention includes:

HDD case, HDD bracket.

HDD case, including: HDD tray, HDD cover.

The HDD tray is configured to be able to mount an HDD.

The HDD cover is configured to be switchable to be arranged on an HDD placed on the HDD tray to hold the closed state of the HDD, and to make the front The HDD tray is opened in an open state, and has a spring pushing portion that abuts elastically on the HDD in the closed state.

The HDD bracket is configured to receive the HDD case, and supports the HDD case to reciprocate in a predetermined first direction.

10‧‧‧Electronic equipment

11‧‧‧Chassis

11a‧‧‧Top plate

11b‧‧‧ floor

11c‧‧‧Front plate

11d‧‧‧Side panel

11f‧‧‧Slit opening

12‧‧‧HDD unit

14‧‧‧Back panel

21‧‧‧HDD

22‧‧‧HDD case

23‧‧‧HDD bracket

24‧‧‧HDD tray

25‧‧‧HDD Cover

25a‧‧‧ protrusion

25b‧‧‧Press

25c‧‧‧The first leaf spring part (spring push part)

25d‧‧‧The second leaf spring part (spring push part)

25e‧‧‧ spring projection

31‧‧‧ bottom frame

31a‧‧‧hole

31b‧‧‧Restriction protrusion (restriction part)

32‧‧‧Side Frame

32a‧‧‧ rail protrusion

32b‧‧‧step difference

32c‧‧‧shaft hole

32d‧‧‧Restriction wall (restricted part)

33‧‧‧Front frame

35‧‧‧Spring leaf

35a‧‧‧ Leaf spring section (spring push section)

36‧‧‧ Shaft

40a‧‧‧Slit

41‧‧‧shell

42‧‧‧ support frame

42a‧‧‧ bottom plate

42b‧‧‧ sidewall

42c‧‧‧ rail protrusion

42d‧‧‧Guide slit

42f‧‧‧ spring projection

42g‧‧‧step difference

43‧‧‧ Connected Track

43a‧‧‧ rail protrusion

43b‧‧‧Step

43c‧‧‧Guide slit

42e‧‧‧Leaf spring section (spring push section)

43e‧‧‧Leaf spring section (spring push section)

43f‧‧‧Spring projection

FIG. 1 is a perspective view showing the structure of a part of the electronic device according to the first embodiment.

FIG. 2 is a perspective view showing a structure of an HDD unit according to the embodiment.

FIG. 3 is a perspective view showing a structure of a first state of a part of the HDD unit of the HDD unit.

FIG. 4 is a perspective view showing the structure of a second state of a part of the HDD unit.

FIG. 5 is a perspective view of an HDD tray of the HDD unit.

FIG. 6 is a perspective view of the HDD tray.

FIG. 7 is a perspective view of the HDD tray.

FIG. 8 is a diagram for explaining the exchange of HDD units in this embodiment.

FIG. 9 is a diagram for explaining the exchange of the HDD unit in this embodiment.

FIG. 10 is a perspective view showing a structure of an HDD tray according to another embodiment.

The first embodiment.

Hereinafter, the structures of the electronic device 10 and the HDD unit 12 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing a structure of a part of an electronic device 10 according to this embodiment, and FIG. 2 is a perspective view showing a structure of an HDD unit 12. 3 and 4 are perspective views showing a first state and a second state of a part of the HDD unit 12, and FIGS. 5 to 7 are perspective views of the HDD tray 24. 8 and 9 are explanatory diagrams of a maintenance operation of the HDD unit 12. In FIG. 3, the HDD cover 25 is omitted.

In the figure, arrows X, Y, and Z indicate three directions orthogonal to each other. X is along the front-rear direction, that is, the first direction, Y is along the width direction, that is, the second direction, and Z is along the up-down direction. That is the third direction. The directions such as up, down, left, right, forward, and backward in this embodiment are shown as an example when the bottom plate of the casing 11 is arranged downward as shown in FIG. 1, but each direction is appropriately changed according to the posture of the electronic device 10. By.

As shown in FIGS. 1 and 2, the electronic device 10 includes a housing 11 and an HDD unit 12 provided in the housing 11. The housing 11 includes, for example, a rectangular top plate 11a, a bottom plate arranged opposite to the bottom plate 11a, a front plate 11c standing up from the front edge of the bottom plate, and a top plate standing from both side edges of the bottom plate. A pair of side plates 11d and a back plate erected upward from the rear end of the bottom plate. The casing 11 is surrounded by the bottom plate 11b, the top plate 11a, the front plate 11c, the back plate, and a pair of side plates 11d to form a rectangular parallelepiped storage space.

The casing 11 is attached to a front end portion of the storage space and attached to the front plate 11c. Inside, a plurality of HDD units 12 are provided. Furthermore, the housing 11 houses various electronic components such as an optical drive unit, a cooling device, and a substrate unit, in addition to the back plate 14 which is erected on the back portion of each HDD unit 12.

A plurality of slit openings 11f are formed in the front plate 11c of the casing 11 so as to communicate with the slits 40a of the HDD holder 23 described later.

Each HDD unit 12 includes, for example, a plurality of HDDs 21, a plurality of HDD cases 22 each holding the HDD 21, and an HDD holder 23 that detachably houses the plurality of HDD cases 22. In this embodiment, the HDD unit 12 is an example of the HDD unit 12 in which the HDD case 22 is arranged in a two-stage structure having two upper and lower stages.

The HDD 21 is, for example, a rectangular block having a predetermined thickness and a plurality of magnetic disks in which memory data is stored.

The HDD case 22 is made of, for example, a metal material, and includes an HDD tray 24 on which the HDD 21 is placed, and an HDD cover 25.

The HDD tray 24 includes a rectangular bottom frame 31, a pair of side frames 32, and a front frame 33. The upper and rear sides are open. The HDD tray 24 is supported by the HDD holder 23 so as to be slidable along the first direction. The HDD tray 24 is configured so that the HDD 21 can be placed thereon.

The bottom frame 31 is configured in a rectangular plate shape, for example. An HDD 21 is placed on the upper surface of the bottom frame 31. A circular hole portion 31 a is formed in a front portion of the bottom frame 31. The hole portion 31a is an opening through which a finger can be inserted during operation.

As shown in FIG. 6, at a predetermined position of the front end of the bottom frame 31 and at a position adjacent to the front of the mounting portion of the HDD 21, a restricting protrusion 31 b protruding upward is integrally provided as the restricting portion. The restricting protrusion 31b is a rib-like shape in which a part of the bottom frame 31 is cut out in a zigzag shape and bent upward. Building blocks. The restricting protrusion 31b is in contact with the front of the HDD 21, thereby restricting the positional deviation of the HDD 21 to the front.

The front frame 33 is a plate-shaped member that is erected on the front edge of the bottom frame 31 and plugs the front of the bottom frame 31. An end of the front frame 33 is provided with a structural member 34 for tying the front frame 33 to the casing 11 when the front frame 33 is closed.

The pair of side frames 32 are wall members extending upward from both side portions of the bottom frame 31. The side frame 32 includes, for example, a rail protrusion 32 a protruding inward at an upper end edge thereof. The rail protrusion 32a is located at a predetermined position, and has a stepped portion 32b that positions the rear portion above the front portion. That is, the rail projections 32a are provided on one and the other of the stepped portion 32b, respectively, and the rear rail projections 32a are positioned above the front rail projections 32a. The step portion 32b is abutting on the rail projection 43a at a lower position in the forward direction among the connecting rails 43 and thereby serves as a stopper for limiting the relative positional relationship with the connecting rails 43.

Each of the pair of side frames 32 is slidably engaged with a pair of connection rails 43 of the HDD bracket 23. That is, the side frame 32 is arranged on the second guide slit 43c on the inner surface of the connecting rail 43 so that the rear end portion of the HDD tray 24 is slidably engaged with the front end portion of the HDD holder 23.

A spring piece 35 is provided on the inner surface of the side frame 32. The spring piece 35 is, for example, an elongated plate shape, and plate spring portions 35a serving as spring portions are provided at both end portions thereof. The leaf spring portion 35 a is configured such that an end portion of the spring piece 35 projects toward the inside of the slit 40 a of the HDD holder 23 and is bent, and is configured to be elastically deformable. The leaf spring portion 35a is positioned further inside than the inner surface of the side frame 32, and abuts against the side of the HDD21 placed on the bottom frame 31, and is elastically pushed, thereby exerting the GND ground and the HDD21. 2-direction positioning function.

At the front end portions of the pair of side frames 32, shaft holes 32c that support the shaft body 36 to be rotatable are formed, respectively, and the shaft body 36 supports the HDD cover 25 to be rotatable. A shaft body 36 is inserted into the shaft hole 32c. The shaft body 36 is supported at the front end portion of the side frame 32 by a support member 32f such as an E-shaped buckle.

As shown in FIGS. 6 and 7, the rear end portions of the pair of side frames 32 are provided with a restriction wall 32 d as a restriction portion formed by bending a part of the side frames 32 inward in the width direction. The restricting wall 32d is disposed behind the placement portion adjacent to the HDD21, and at the end in the width direction, for example, a plane orthogonal to the insertion direction is formed, and the HDD21 is restricted from abutting against the rear end portion of the HDD21 to rearward Mobile.

The HDD cover 25 is, for example, a metal plate member, and is provided at the upper end of the front frame 33 between the side frames 32 so as to be rotatable around the shaft 36. The HDD cover 25 is configured to be switchable between a closed state in which the HDD 21 is pressed against the HDD 21 and an open state in which the HDD tray 24 is opened. The HDD cover 25 is provided at both end portions in the width direction, and includes a protruding portion 25 a configured to have a large distance from the rotation axis, and a central portion configured to have a small distance from the rotation axis.

The HDD cover 25 is provided with a pressing piece 25b at a front end portion of the protruding portion 25a. The pressing piece 25b is configured to bend forward with the HDD cover 25 facing forward in the turning direction of the closed state, that is, toward the HDD21. In the closed state, the pressing piece 25 b extends obliquely toward the inner side and the lower side of the insertion direction, and presses the upper surface of the HDD 21.

The HDD cover 25 includes a first leaf spring portion 25c and a second leaf spring portion 25d attached to the protruding portion 25a.

The first leaf spring portion 25c is formed by bending a U-shaped spring piece in a predetermined area of the protruding portion 25a of the HDD cover 25 and bending it upward. The first plate spring portion 25c has, for example, a unilaterally fixed structure in which the rear end in the sliding direction is the base end and the front end in the sliding direction is a free end, and the front end portion is inclined obliquely upward. A spring convex portion 25e protruding upward is formed at a front end portion of the first leaf spring portion 25c.

The second leaf spring portion 25 d is formed by bending a U-shaped spring piece in a predetermined region at a base end portion of the protruding portion 25 a of the HDD cover 25 and bending it downward. The second leaf spring portion 25d has, for example, a unilaterally fixed structure in which the widthwise center side is a base end and the widthwise outer side is a free end, and the front end is inclined obliquely downward. A spring convex portion 25e protruding downward is formed at a front end portion of the second leaf spring portion 25d.

The HDD cover 25 is configured to be rotatable between a closed position shown in FIG. 2 and an open position shown in FIG. 1. In the thickness direction of the HDD cover 25, the size defined by the front end position of the spring convex portion 25e of the first leaf spring portion 25c and the front end position of the spring convex portion 25e of the second leaf spring portion 25d is configured to be larger than that of the HDD 21 The height dimension between the upper surface of the groove and the top surface of the slit 40a is slightly larger. That is, the size is configured such that the HDD cover 25 is disposed between the top surface of the slit 40a and the upper surface of the HDD 21 in the closed state, and the upper surface of the HDD 21 is provided by the second leaf spring portion 25d and the pressing piece. 25b is pressed relatively downward.

The HDD holder 23 includes a housing 41 constituting a casing, two support frames 42 on which the HDD tray 24 is placed, and a connecting rail 43 that slidably supports the HDD tray 24 on the support frame 42.

The HDD bracket 23 is constructed by a casing 41 and a support frame 42 in two stages. It has a cylindrical shape with a rectangular cross-section that surrounds the upper, lower and both sides. The HDD bracket 23 is provided with two sections of slits 40a opened in the height direction at the front and rear sides of the housing 41 and the support frame 42 of the two sections.

The case 41 is integrally provided with an upper wall portion 41a and a pair of side wall portions 41b. The case 41 is provided with four parts in the front, rear, left, and right portions: a fixing piece 41c extending from the side edge of the upper wall portion 41a to the side and having a connection hole for a structural member. Further, the case 41 is integrally provided with a fixed flange piece 41d extending laterally from the front edge of the side wall portion, and a pair of side flange pieces 41e extending laterally from the lower edge of the side wall portion. The casing 41 is integrally provided at its rear end portion with a plate fixing portion 41f to which a bottom plate is fixed.

The support frame 42 is made of, for example, a metal material, and is integrally provided with a rectangular bottom plate member 42 a and a pair of side walls 42 b standing upright from both side edges of the bottom plate member.

The pair of side walls 42b are formed in a plate shape having a predetermined height dimension. The side wall 42b is integrally provided with a rail protrusion 42c which protrudes inward at an upper end edge thereof. A guide slit 42d, which is a groove in which the connecting rail 43 is arranged on the inner wall of the side wall 42b, is formed by the rail protrusion 42c.

The rail protrusion 42c is located at a predetermined position, and has a stepped portion 42g that positions the rear portion above the front portion. That is, the rail projections 42c are provided on one and the other of the stepped portions 42g, respectively, and the rear rail projections 42c are positioned above the front rail projections 42c.

At a predetermined position of the pair of side walls 42b, a leaf spring portion 42e constituting an elastic pushing portion is provided. The leaf spring portion 42e is configured to include a spring piece that is cut into a U shape in a predetermined region of the pair of side walls 42b. The leaf spring portion 42e makes the sliding direction The front side is a base end and a unilaterally fixed structure in which the rear side in the sliding direction is a free end. A spring convex portion 42f protruding inward is formed at the front end portion.

The connecting rail 43 is a frame-like member along the first direction, and has rail protrusions 43a protruding toward the inside of the slit 40a at the upper and lower ends thereof, and is configured to have a U-shape when viewed in cross section, for example. The connecting rail 43 is formed by a rail protrusion 43a, and a second guide slit 43c, which is a groove extending along the first direction, is formed on the inner wall of the rail.

The connection rail 43 is configured to be slidably engaged with the support frame 42 by arranging the rear end region on the first guide slit 42d of the support frame 42. In addition, the connecting rail 43 is provided with a side portion of the HDD tray 24 in a second guide slit 43c formed on the inner wall thereof, thereby guiding the moving direction of the HDD tray 24 in the first direction.

The rail protrusion 43a is at a predetermined position, and has a stepped portion 43b that positions the rear portion above the front portion. That is, the track protrusions 43a are respectively provided on one side and the other of the step portion 43b, and the track protrusions 43a at the rear are positioned above the track protrusions 43a at the front. The step portion 43b abuts against the rail protrusion 42c at the lower position in the front portion of the side wall 42b, thereby serving as a stopper for limiting the relative positional relationship between the connecting rail 43 and the support frame 42 in the first direction.

In other words, the HDD case 22, the support frame 42, and the connection rail 43 constitute a two-stage retractable guide rail mechanism. The HDD case 22 is supported by the HDD holder 23 so as to be reciprocally movable in a predetermined first direction.

At a predetermined position of the connecting rail 43, a leaf spring portion 43 e constituting an elastic pushing portion is provided. The leaf spring portion 43e is configured to have: a predetermined area of the connecting rail 43; The field is cut into U-shaped spring leaves. The leaf spring portion 43e has a unilaterally fixed structure in which the front end in the sliding direction is the base end and the rear end in the sliding direction is the free end. A spring convex portion 43f is formed at the front end portion so as to protrude inward.

The back plate 14 is a substrate on which electronic components are mounted, and is erected on the back portion of the HDD unit 12. The back plate 14 has, for example, a connector connected to the HDD 21 on a main surface disposed opposite to the rear surface of the HDD 21. When the slit 40a of the HDD bracket 23 is inserted into the HDD21 for storage, the terminals on the rear end of the HDD21 are arranged in the openings on the rear side of the slit 40a of the HDD bracket 23 so as to be electrically and mechanically connected to the connectors of the back plate 14. By connecting the rear end of the HDD 21 to the back plate 14, the rear of the HDD 21 is supported.

The HDD unit 12 serves as a plurality of elastic pushing portions, and the plate spring portions 25c, 25d, 35a, 42e, and 43e are also used as ground points of GND. That is, the conductive leaf spring portions 25c, 25d, and 35a provided in the HDD case made of a metal material, and the conductive leaf spring portions 42e, 43e provided in the HDD holder 23 and the connecting rail 43, The HDD 21 is electrically connected to the HDD case 22 and the HDD holder 23.

The HDD unit 12 configured as described above will be described with reference to FIGS. 1 to 9 with respect to the HDD 21 exchange operation.

In the first state shown in FIG. 4, the HDD unit 12 is in a state where the HDD tray 24 is inside the slit 40 a and the rear end portion in the sliding direction is pressed into the storage state. At this time, the HDD 21 is placed on the HDD tray 24, and the HDD cover is in the closed position. In this first state, the cover covers the upper surface of the HDD 21 and is disposed between the cover and the top of the slit 40a. At this time, the upper leaf spring is pushed toward the top, and the lower leaf spring is pushed toward the top of the HDD21 downward. Pressing the hood The pressing piece 25b is pressed on the upper surface of the HDD21. At this time, the guide rail mechanism including the support frame 42 and the rail member is in a contracted state.

In this first state, the connecting structure member 34 is removed, and the HDD tray 24 is pulled out. Then, the guide rail mechanism formed by the HDD case 22, the support frame 42, and the connecting rail 43 is extended to make the HDD. The tray 24 is in a second state in which the tray 24 is pulled forward further than the front plate 11c. In this second state, the HDD cover 25 in the closed position is rotated to the open position to be opened, and the upper portion of the HDD tray 24 is opened. Then, the HDD 21 is taken out, and another HDD 21 is set on the HDD tray 24.

After that, the HDD cover 25 is rotated toward the closed position toward the closed position of the HDD cover 25 to cover the HDD. Next, the HDD tray 24 is pushed into the inside of the slit 40a. In this way, the guide rail mechanism is shortened again, the HDD tray 24 is accommodated in the slit 40a, and becomes the first state, and the connecting member 34 is concluded to complete the exchange operation.

The HDD unit 12 and the electronic device 10 configured as described above exhibit the following effects. That is, the HDD tray 24 is configured to include an HDD cover 25 that elastically presses the HDD 21 from above, so that the HDD 21 can be positioned and fixed in the vertical direction. Therefore, it can be de-screwed and maintenance work is facilitated. In the operation in a special place such as a computer room, since small parts such as screws are not required to be managed, the workability or safety is high.

In addition, the side wall portions of the HDD tray 24, the connecting rail 43, and the support frame 42 are formed with leaf spring portions 25c, 25d, 35a, 42e, and 43e of a single-side fixed structure, thereby allowing the HDD to be moved in the width direction. Connect to GND. In addition, in the width direction and the vertical direction, the structure is fixed with a single side. Since the leaf spring portions 25c, 25d, 35a, 42e, and 43e have a structure that elastically pushes, a structure with high vibration resistance can be realized.

The HDD tray 24 includes a restriction protrusion 31d that restricts the front movement of the HDD 21 and a restriction wall 32d that restricts the rear movement, thereby restricting the movement of the HDD 21 in the forward and backward directions.

In addition, the HDD tray 24 is structured to be supported by the HDD bracket 23 by a guide rail mechanism capable of sliding in two stages. Therefore, the HDD tray 24 can be completely pulled out to the outside of the casing 11 and maintenance workability is relatively low. high. Furthermore, even if the HDD tray 24 is pulled out from the electronic device 10 significantly, it is possible to suppress a situation where the HDD tray 24 is bent downward due to its own weight.

The present invention is not limited to the aforementioned embodiments.

For example, as another embodiment, the HDD tray 24A shown in FIG. 10 is provided with an EMI (Electro Magnetic Interference) gasket 46 instead of the spring piece 35 as a spring pusher. The other structures are the same as those of the HDD tray 24A according to the first embodiment. The EMI gasket 46 includes, for example, a sponge-like elastic member having cushioning properties, and a conductive covering material (coated portion) such as a conductive cloth wound around the surface of the elastic member. Even in this embodiment, it is electrically connected to the EMI gasket 46 from the HDD 21 to the metal HDD tray 24A and the metal HDD holder 23 through the elastic pushing portions 25c, 25d, and 46. The same effects as those of the above embodiment are exhibited.

In addition, although several embodiments of the present invention have been described, those embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, as long as Various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments or their modifications are included in the scope or spirit of the invention, and are included in a range equivalent to the invention described in the scope of patent application.

11‧‧‧Chassis

11a‧‧‧Top plate

11c‧‧‧Front plate

11f‧‧‧Slit opening

12‧‧‧HDD unit

21‧‧‧HDD

22‧‧‧HDD case

23‧‧‧HDD bracket

24‧‧‧HDD tray

25‧‧‧HDD Cover

25c‧‧‧The first leaf spring part (spring push part)

25d‧‧‧The second leaf spring part (spring push part)

31‧‧‧ bottom frame

32‧‧‧Side Frame

33‧‧‧Front frame

35‧‧‧Spring leaf

35a‧‧‧ Leaf spring section (spring push section)

40a‧‧‧Slit

Claims (7)

An HDD unit is provided with an HDD case and an HDD bracket. The HDD case is provided with an HDD tray and an HDD cover. The HDD tray is configured to carry an HDD, and the HDD cover is configured to be switchable to: The HDD placed on the HDD tray presses the closed state of the HDD and the open state of the HDD tray is opened, and has a spring pushing portion that elastically abuts the HDD in the closed state. The HDD bracket is configured to receive the HDD case, and supports the HDD case to reciprocate in a predetermined first direction. The HDD unit according to claim 1, wherein the HDD tray includes a bottom frame and a side frame on which the HDD is placed, and is slidably engaged with the HDD bracket in the first direction. The side frame is provided with a spring portion that elastically abuts a side portion of the HDD. The HDD unit according to claim 1 or 2, wherein the HDD cover is provided on one end side of the HDD tray in the first direction, and is a component that can be mounted on the HDD placed on the HDD tray. At least a part of the closed position covered and the plate-shaped member that is configured to rotate while opening the open position on the HDD are disposed between the top of the slit and the HDD, and have a downward protrusion in the closed state. On the other hand, a first leaf spring that pushes the upper surface of the HDD, and a second leaf spring that projects upward in the closed state and pushes the top. The HDD unit according to claim 1 or 2, wherein the HDD tray is provided with a restricting portion that restricts the position of the HDD before the first direction of the mounting portion of the HDD and at a position adjacent to the rear side. . The HDD unit according to claim 1 or 2, wherein the elastic part is a leaf spring member with a unilateral fixed structure made of a metal material, so that the elastic part and the HDD tray and the HDD bracket are electrically conductive. connection. The HDD unit according to claim 1 or 2, wherein the ejection portion is an EMI gasket including an elastic member and a conductive covering portion that covers a surface of the elastic member, so that the ejection portion and the The HDD tray is electrically connected to the HDD bracket. An electronic device includes: the HDD unit according to claim 1; a casing configured as a box capable of accommodating the HDD unit and having a slit opening communicating with the slit; and a back plate attached to the foregoing A housing is erected on the back of the bracket, and a connector for connecting to a terminal provided behind the HDD in the pull-out direction is mounted.