JP2002237179A - Closed structure of case of drive device for recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide closed structure of a case of a drive device for a recording medium which can intercept invasion of dust and which is superior in decomposition and recomposition. SOLUTION: A front part of a base chassis 14 is inserted between peripheral edges 1606 of both sides on peripheral edges 1606 of a lower part of a bezel 14, and assembled with screws. An engaging projected part 2010 of an over cover 20 is inserted into a engaging groove 26 of the base chassis 14, an engaging chip 2012 is inserted in an upper part of a bezel 16 an inside of the peripheral edges 1606 of both side, a packing 40 is held between peripheral edges 1606 and the outer surface of the over cover 20, and screws are attached to an attachment chip 24. An engaging projected part 1810 of a rear cover 18 is inserted into an engaging groove 26 of the base chassis 14, also, an engaging chip 1812 is inserted in an inside of a rear edge of the over cover 20, a packing 50 is held between the outer surface of the over cover 20 and the outer surface of the rear cover 18, and screws are attached to a attachment chip 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a sealed structure of a casing of a recording medium drive device.

[0002]

2. Description of the Related Art A drive device for a recording medium which records information on various recording media such as a magnetic tape and an optical disk and reproduces the recorded information can prevent various errors and failures caused by dust adhesion. From the viewpoint of prevention, it is desirable to prevent dust from entering the inside of the housing as much as possible. Many of the housings of such a recording medium drive device include a base chassis provided with a mechanism for performing recording or reproduction, a bezel provided with a recording medium insertion / removal hole, and a base chassis and a bezel. It is composed of a plurality of covers that are assembled across. And in the conventional case, in order to prevent dust from entering, the mating surface of the base chassis and the bezel, the mating surface of the covers, etc.
Adhesive tapes are respectively applied to a plurality of places where gaps are formed, so as to close the gaps.

[0003]

For this reason, in the case of the conventional recording medium drive apparatus, it is necessary to peel off the adhesive tape at a plurality of positions of the case at the time of disassembly, and to reattach the adhesive tape at the time of reassembly. Work was required, and there was a problem that the disassembly and reassembly were poor. The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a sealed structure of a housing of a recording medium drive device which can prevent intrusion of dust, and is excellent in disassembly and reassembly. Is to provide.

[0004]

In order to achieve the above object, a housing of a recording medium drive device according to the present invention includes a base chassis, a bezel, a rear cover, and an over cover. The base chassis is provided with a mechanism for performing recording or reproduction, and is formed in a rectangular shape in plan view from front, rear, left and right sides. The bezel is provided with a recording medium insertion / removal hole, is assembled to the front side of the base chassis, and is configured to rise from the front side of the base chassis. The rear cover is attached to a rear side of the base chassis and left and right sides near the rear side, and is configured to cover an upper part of a rear portion of the base chassis.
The overcover is attached to left and right sides of the base chassis, and is configured to cover an upper portion of the base chassis between the bezel and the rear cover. On the left and right sides and the rear side of the base chassis, engaging grooves extending along these sides in an open shape outside the base chassis are formed over the entire length of each side. A packing is mounted in each of the engagement grooves. The bezel includes a rectangular front portion provided with the insertion / removal hole, and edge pieces bent inward of the bezel from four sides of the front portion. At the lower end of the rear cover, an engagement protrusion protruding inward of the rear cover and extending along the lower end of the rear cover is provided over the entire length of the lower end of the rear cover. At the front end of the rear cover, an engagement piece protruding forward from a position displaced toward the inner surface from the outer surface of the rear cover is formed to extend over the entire length of the front end of the rear cover. At the lower end of the over cover, an engaging projection protruding inward of the over cover and extending along the lower end of the over cover is provided over the entire length of the lower end of the over cover. At the front end of the over cover, an engagement piece protruding forward from a position displaced toward the inner surface from the outer surface of the over cover extends over the entire length of the front end of the over cover. The bezel and the base chassis are fixed by screws with the front part of the base chassis inserted between the bezels on both sides of the bezel on the lower bezel of the bezel, and the engaging projection of the rear cover is formed by the base. The rear cover and the base chassis are fixed by screws while being inserted into the engagement grooves of the chassis. Then, the engaging protrusion of the over cover is inserted into the engaging groove of the base chassis, and packing is interposed between the rear end of the bezel edge piece and the front end of the outer surface of the over cover to form the over cover. The engaging piece is inserted inside the edge of the bezel, and packing is interposed between the front end of the outer surface of the rear cover and the rear end of the outer surface of the over cover, so that the engaging piece of the rear cover is formed on the inner surface of the rear end of the over cover. The overcover and the base chassis are fixed by screws in a state where they are inserted into the cover.

According to the present invention, the bezel, the rear cover, and the overcover are joined to the base chassis without using an adhesive tape without any gap, the mating surface of the bezel and the overcover, and the mating of the overcover and the rear cover. Also on the surface, they are joined without any gap without using an adhesive tape. Therefore, according to the present invention, it is needless to say that dust can be prevented from entering the inside of the housing. Since no adhesive tape is used, disassembly and reassembly can be performed easily.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a housing on which various mechanisms for recording or reproduction are mounted, FIG. 2 is a perspective view of a housing portion, FIG. 3 is an exploded perspective view of the housing portion, and FIG. FIG. 5B is a perspective view of the chassis, FIG. 5B is a perspective view of the base chassis seen from the rear, and FIG. 6 is a perspective view of the base chassis with the mechanical chassis attached thereto. 7 is a perspective view of a rear cover, FIG. 8A is a perspective view of a state where the rear cover is attached to a base chassis, and FIG. 8B is a cross-sectional view of a state where the rear cover and the base chassis are combined. In the present embodiment, the recording medium drive device 10 is for a tape cassette in which a magnetic tape is wound and accommodated. When a tape cassette is mounted in the recording medium drive device 10, information is recorded on the magnetic tape. Also, the information recorded on the magnetic tape is reproduced. The housing 12 of the recording medium drive device 10 includes a base chassis 14, a bezel 16, a rear cover 18, an over cover 20, and the like.

The base chassis 14 is made of a synthetic resin plate, and is formed in a rectangular shape in plan view from the front, rear, left and right sides as shown in FIGS. 3, 4A and 5. Metal plates 22 having a small width and a large length are attached to the left and right sides (long sides) of the base chassis 14 so as to extend along the left and right sides. A plurality of mounting pieces 24 each having an upper portion are provided so as to protrude upward. The rigidity of the base chassis 14 is enhanced by the metal plate members 22, and the mounting pieces 2 of the metal plate members 22 are
The bezel 16, the rear cover 18, and the overcover 20 are securely assembled to the base chassis 14 via the base 4, which is advantageous in preventing dust from entering the inside of the housing 12. Also, the base chassis 14
As shown in FIGS. 4 (A) and 5, engagement grooves 26 which are open to the outside of the base chassis 14 and extend along these sides are provided on the left and right sides and the rear side of the respective sides. As shown in FIG. 8B, each engaging groove 26 is formed over the entire length.
Packing 2 made of an elastic material such as rubber
8 are mounted respectively.

[0008] On the upper surface of the base chassis 14, FIG.
As shown in FIG. 1, a metal mechanical chassis 30 is mounted via the mounting piece 24, and as shown in FIG.
A helical scan type drum 3202 for reproducing a record written on a magnetic tape or writing a record on a magnetic tape, a pinch roller assembly 3203 for pressing the magnetic tape against a capstan, and a reel for pulling out the magnetic tape from the tape cassette and winding it up Various mechanisms for recording or reproduction are provided, such as a transport mechanism 3205 that spans over 3204. In FIG. 4A, reference numeral 34 denotes a long hole penetratingly formed over the base chassis 14 above and below, and a plurality of the long holes 34 are provided. These long holes 3
4 is for inserting the flexible printed circuit board F over and under the base chassis 14 as shown in FIG. 4 (B). A packing 36 made of an elastic material such as rubber is attached to each slot 34 so as to close a gap between the flexible printed board F and the inner periphery of the slot 34. The intrusion of dust into the inside of the housing 12 from the passage slot 34 is prevented. Further, in FIG.
Reference numeral 02 denotes escape of the screw for mounting the reel motor, and reference numeral 3804 denotes escape of the drive shaft of the drum motor.

The bezel (front plate) 16 is made of synthetic resin. The bezel 16 has a rectangular front portion 1604 provided with an insertion / removal hole 1602 for inserting / removing a tape cassette into / from the mounting portion 3201, and a front portion. An edge piece 1606 bent inward from the four sides of the bezel 16 from the four sides of the bezel 16 is provided.

As shown in FIG. 7, the rear cover 18 includes left and right side surfaces 1802, a rear surface 1804, and an upper surface 1806 connecting the upper surfaces of the side surfaces 1802 and the rear surface 1804. The rear chassis and the left and right sides near the rear edge are assembled so as to cover an upper portion of a rear portion of the base chassis 14. At the lower ends of the left and right side portions 1802 and the rear portion 1804,
An engaging projection 1810 protruding inward of the rear cover 18 and extending along the lower end of the rear cover 18 is provided over the entire length of the lower end of the rear cover 18. The engaging projection 18
Reference numeral 10 is formed so as to be engageable with the engagement groove 26 of the base chassis 14. At the front ends of the left and right side surface portions 1802 and the upper surface portion 1806, engagement pieces 1812 protruding forward from locations displaced inward from the outer surface of the rear cover 18.
Are formed to extend along the front end of the rear cover 18 over substantially the entire length of the front end.

As shown in FIG. 3, the over cover 20 includes left and right side portions 2002 and left and right side portions 2.
An upper surface portion 2006 connecting the upper end of the base chassis 002 is mounted on left and right sides of the base chassis 14 so as to cover an upper portion of the base chassis 14 between the bezel 16 and the rear cover 18. At the lower ends of the left and right side surfaces 2002, an engagement protrusion 2010 protruding inward of the over cover 20 and extending along the lower end of the over cover 20 is provided over the entire length of the lower end of the over cover 20. The engagement protrusion 2010 is formed so as to be able to engage with the engagement groove 26 of the base chassis 14. At the front ends of the left and right side surface portions 2002 and the upper surface portion 2006, an engagement piece 2012 protruding forward from a position displaced to the inner surface from the outer surface of the over cover 20 substantially along the front end of the over cover 20 is substantially the entire length of the front end. Is formed so as to extend therethrough.

The housing 12 of the recording medium drive device 10 is assembled as follows. First, the base chassis 14
A mechanical chassis 30 is attached to the upper surface of the device via a mounting piece 24. On the mechanical chassis 30, a mounting portion 3201 of a tape cassette and a helical scan type
2. Various mechanisms for recording or reproduction are provided, such as a pinch roller assembly 3203, a take-up reel 3204, a transport mechanism 3205, and the like. Next, the bezel 16 is assembled to the base chassis 14. Specifically, the front of the base chassis 14 is positioned on the lower edge 1606 of the bezel 14 on both sides of the edge 1606.
The bezel 14 is inserted between the base chassis 1
6 is assembled with screws. 3 and 4 (A),
In FIG. 5, the mounting piece 24 of the metal plate 22 provided so as to be located on the front side of the base chassis 14 is omitted, but a screw for assembling the bezel is attached to the mounting piece 24.

Next, the overcover 20 is assembled to the base chassis 14. For details, see Overcover 2
The engagement protrusion 2010 of No. 0 is inserted into the engagement groove 26 of the base chassis 14, and the engagement protrusion 2010 and the engagement groove 26 are connected to each other through the packing 28 without any gap. A packing 40 made of an elastic material such as rubber is mounted on the engagement piece 2012 of the over cover 20, and the engagement piece 2012 of the over cover 20 to which the packing 40 is mounted is attached to the upper part and both sides of the bezel 16. The packing 40 (see FIGS. 1 and 2) is inserted between the rear end of the edge 1606 of the bezel 16 and the front end of the outer surface of the over cover 20. Is the mounting piece 24
Is attached to the base chassis 14.

[0015] Finally, the rear cover 18 is assembled to the base chassis 14. Specifically, the rear cover 1
The eight engaging projections 1810 are inserted into the engaging grooves 26 of the base chassis 14, and the engaging projections 1810 and the engaging grooves 26 are connected to each other through the packing 28 without any gap. A packing 50 (see FIGS. 1 and 2) made of an elastic material such as rubber is mounted on the engagement piece 2012 of the rear cover 18, and the engagement piece 1812 of the rear cover 18 to which the packing 50 is mounted is attached. It is inserted inside the rear end of the over cover 20 and the rear end of the outer surface of the over cover 20 and the rear cover 18.
The packing 50 is sandwiched between the front end of the outer surface and the rear cover 18 is assembled to the base chassis 14 by attaching screws to the mounting pieces 24 in this state. It is optional to attach a bottom plate to the lower surface of the base chassis 14 so as to cover the entire lower surface of the base chassis 14.

According to the present embodiment, the base chassis 1
4, at the place where the bezel 16, the rear cover 18, and the overcover 20 are attached,
Mating surface with overcover 20 and overcover 2
0 and the rear cover 18 are joined without any gap without using an adhesive tape. Therefore,
According to the present embodiment, it goes without saying that dust can be prevented from entering the inside of the housing 12 of the recording medium drive device 10, and the operation of peeling off or reattaching the adhesive tape as in the related art is omitted. Disassembly and reassembly can be performed easily.

[0016]

As described above, according to the present invention, the housing of the recording medium drive device is constituted by the base chassis, the bezel, the rear cover, and the over cover, and these members are formed by using an adhesive tape. Since it is configured to be connected without any gap, it is possible to prevent dust from entering the inside of the housing, and it is possible to easily perform disassembly and reassembly.

[Brief description of the drawings]

FIG. 1 is a perspective view of a housing on which various mechanisms for recording or reproduction are mounted.

FIG. 2 is a perspective view of a housing portion.

FIG. 3 is an exploded perspective view of a housing portion.

FIG. 4A is a perspective view of a base chassis, and FIG. 4B is a perspective view of a state where a printed board is inserted into a long hole.

FIG. 5 is a perspective view of the base chassis as viewed from the rear.

FIG. 6 is a perspective view showing a state where a mechanical chassis is attached to a base chassis.

FIG. 7 is a perspective view of a rear cover.

FIG. 8A is a perspective view of a state where a rear cover is attached to a base chassis, and FIG. 8B is a cross-sectional view of a state where the rear cover and the base chassis are combined.

[Explanation of symbols]

10: Drive device for recording medium, 12: Housing, 14
... Base chassis, 16 ... Bezel, 18 ... Rear cover, 20 ... Overcover.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuaki Kano 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Katsumi Maekawa 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo No. Sony Corporation

Claims (3)

[Claims] 1. A sealed structure of a casing of a recording medium drive device for recording information on a recording medium or reproducing information recorded on the recording medium, wherein the casing is used for recording or reproducing. A base chassis formed in a rectangular shape in plan view from the front, rear, left and right sides, and a bezel which is provided with a recording medium insertion / removal hole and is assembled to the front side of the base chassis and rises from the front side of the base chassis And a rear cover assembled over the rear side of the base chassis and the left and right sides near the rear side to cover the upper part of the rear portion of the base chassis; and a rear cover assembled on the left and right sides of the base chassis and between the bezel and the rear cover. An over cover for covering the upper side, and the left and right sides and the rear side of the base chassis are open to the outside of the base chassis and these sides are formed. An engaging groove extending along the entire length of each side is formed, packing is attached to each of the engaging grooves, and the bezel has a rectangular front portion provided with the insertion / removal hole, and a front portion. Edge portions bent inwardly of the bezel from four sides of the rear cover. At the lower end of the rear cover, an engaging projection protruding inward of the rear cover and extending along the lower end of the rear cover has the entire length of the lower end of the rear cover. An engagement piece protruding forward from a position displaced from the inner surface to the outer surface of the rear cover at the front end of the rear cover and extending over the entire length of the front end of the rear cover. An engaging projection protruding inward of the cover and extending along the lower end of the overcover is provided over the entire length of the lower end of the overcover. An engagement piece protruding forward from a position displaced toward the inner surface from the outer surface of the bar is formed to extend over the entire length of the front end of the over cover, and the front portion of the base chassis is formed on the lower edge piece of the bezel on both sides of the bezel. The bezel and the base chassis are fixed by screws while being inserted between the edge pieces, and the rear cover and the base chassis are fixed by screws while the engaging projections of the rear cover are inserted into the engagement grooves of the base chassis. The engagement protrusion of the overcover is inserted into the engagement groove of the base chassis, and a packing is interposed between the rear end of the bezel edge piece and the front end of the outer surface of the overcover to form the overcover. An engagement piece is inserted into the inside of the edge of the bezel, and a packing is interposed between the front end of the outer surface of the rear cover and the rear end of the outer surface of the over cover to engage the rear cover. Sealed structure of the housing of the piece has a rear end over the cover and the base chassis inserted state on the inner surface of the over cover is fixed by screws, recording medium drive unit, characterized in that. 2. The base chassis has a long hole penetrating a flexible printed circuit board vertically above and below the base chassis, and the long hole has a gap between the flexible printed circuit board and an inner periphery of the long hole. 2. A sealed structure for a casing of a recording medium drive device according to claim 1, wherein a packing for closing is mounted. 3. The base chassis is formed of a rectangular synthetic resin plate, and a metal plate is attached so as to extend along each long side of the base chassis. A plurality of mounting pieces having female threads are provided to protrude upward from above, and screws for mounting the bezel, the rear cover, and the over cover to the base chassis are screwed into the female threads of the mounting pieces. A sealed structure of a housing of the recording medium drive device according to the above.