JPH11159226A - Cover body opening/closing mechanism and recording-reproducing device provided with the mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely lock a case to a cover body in a closed position and hold the flatness of the cover body in the closed position. SOLUTION: This opening/closing mechanism opens/closes an opening recessed part 11 formed at a casing 3, by the rotation of a cover body 15 rotatably supported to the casing 3 through a supporting shaft provided on one edge side. The opening/closing mechanism is provided with an energizing means provided on one edge side of the cover body 15 so as to energize the cover body 15 with moving force toward an open position, a locking means 36 for locking the cover body 15 into a closed position, spring means 26, 27 coming in elastic contact with the inner surface of the cover body 15 locked into the closed position, and lock release means 28, 30 for releasing the locked state of the cover body 15 locked into the closed position by the locking means 36. The locking means 36 and spring means 26, 27 are arranged at the casing 3 in correspondence with the other edge side of the cover body 15 and provided being spaced in the extended direction of the other edge, and the cover body 15 can be rotated into a position more on the bottom face side of the opening recessed part 11 of the casing 3 than the closed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover opening / closing mechanism and a recording / reproducing apparatus provided with the same. More specifically, the present invention relates to a technique for ensuring that a lid is securely locked at a closed position and maintaining flatness of the lid at a closed position.

[0002]

2. Description of the Related Art For example, a recording / reproducing unit for recording or reproducing an information signal on a recording / reproducing medium such as an optical disk, or both of them, and an operation having operation buttons for performing various operations are arranged. 2. Description of the Related Art There is a recording / reproducing apparatus called a so-called stereo set in which a unit, a speaker unit for outputting reproduced sound of a recording / reproducing medium, and the like are integrally held in one outer casing.

In such a recording / reproducing apparatus, a recording / reproducing section and an operation section are arranged in an arrangement housing, and an outer lid for opening and closing an upper surface of the arrangement housing and an arrangement housing are formed. A recording / reproducing section having a mounting portion in which a recording / reproducing medium is mounted in the opened concave section, and an inner lid for opening and closing the open concave section, the outer lid is electrically opened and closed, and the inner lid is manually operated. Some are designed to be opened and closed.

In the above-described recording / reproducing apparatus, for example, an outer lid is rotatably supported at the rear end of the placement housing, and an inner lid is provided at a portion near the rear end of the placement housing. It is rotatably supported in a state where the moving force toward the open position is urged by the urging means.

When both the outer lid and the inner lid are open, the opening and closing of only the inner lid is performed as follows.

The inner lid is closed by manually pressing the outer surface of the inner lid in the closing direction, whereby the inner lid is rotated and locked in the closed position by the locking means provided on the arrangement housing. In addition, the opening of the inner lid is released by operating a lock release button provided on the arrangement housing, the lock on the inner lid is released, and the inner lid is rotated to the open position by the urging force of the urging means. It is done by doing.

If it is desired to close both the outer lid and the inner lid in a state where both the outer lid and the inner lid are open, if the outer lid is electrically closed, the inner surface of the outer lid becomes the outer surface of the inner lid. Is pressed in the closing direction, so that the inner lid is also closed.

Although the inner lid is locked by the lock means in the closed position as described above, the inner lid is provided in the arrangement housing in order to maintain the flatness of the inner lid in the closed position. A receiving portion for receiving the peripheral portion of the rim is formed.

[0009]

As described above, when the inner lid is closed manually, the operator usually recognizes the position of the locking means for locking the inner lid at the closed position. Not. Therefore, for example, when the locking means is disposed corresponding to the right edge of the inner lid, when the operator presses the left edge side of the inner lid to close the inner lid, the inner lid is pressed against the pressed side. It is easy to incline in such a state that the left edge of the is sinking and the right edge is raised. Therefore, even though the inner lid is intended to be pressed to the closed position, the right edge side on which the locking means is formed does not contact the receiving portion, and the inner lid is not completely rotated to the closed position. Has the disadvantage that the inner lid is not locked in the closed position.

[0010] For example, when the inner lid is provided with a biasing means for biasing the moving force toward the open position on the right edge side on which the operator does not press, particularly the inner lid is provided. Is easily inclined so that the right side edge thereof rises, so that the inner lid is very hard to be locked in the closed position.

In order to prevent such inconvenience, for example, a mark indicating a pressed portion is attached to a position on the outer surface of the inner lid corresponding to a position where the locking means is formed, and a position to be pressed is designated. There is a way.

However, when the mark is added, the appearance of the inner lid is deteriorated. In particular, in a high-end device such as a stereo set among recording / reproducing devices, the sense of quality is impaired and the quality of the device is lowered. There is a problem that it will.

Further, in the case of an inner lid for opening and closing the opening concave portion of the recording / reproducing section in which the recording / reproducing medium is disposed as described above, usually, a part or the whole of the inner lid is provided. A transparent peeping portion is formed so that the inside of the opening concave portion can be visually recognized, and depending on the position where the locking means is formed, a mark may be attached to a part of the outer surface of the peeping portion. May have a disadvantage that the inside becomes difficult to see.

Further, depending on the structure of the recording / reproducing apparatus, the lock means and the lock release button may be provided at positions considerably apart from each other in the arrangement housing. In such a case, a mark is provided. When the operator specifies the pressing position, it is very difficult to operate because the position where the operator operates to close the inner lid and the position where the operator operates to open the inner lid are far apart. Would.

On the other hand, as a method for reliably locking the inner lid, a receiving portion for receiving the peripheral portion of the inner lid at the closed position is not provided at all in the arrangement housing,
It is also conceivable to provide a so-called overstroke so that the inner lid can rotate to a position closer to the bottom of the opening concave portion of the recording / reproducing unit than the closed position.

In this case, however, the right side of the inner lid corresponding to the locking means is locked by the locking means, so that the position is determined by the locking means, but the position is determined, but no receiving portion is provided. There is nothing to restrict the left edge of the inner lid, and its position is difficult to determine. Therefore, for example, in the closed position, the inner lid may be inclined such that the right edge side thereof is located above the left edge side. In such a case, the flatness of the lid body at the closed position is maintained. There is a possibility that another problem that the operation cannot be performed may occur.

Accordingly, the lid opening / closing mechanism and the recording / reproducing apparatus provided with the same according to the present invention overcome the problems described above.
It is an object to ensure that the lid is securely locked in the closed position and to maintain the flatness of the lid in the closed position.

[0018]

According to the present invention, there is provided a lid opening / closing mechanism for opening / closing an opening / recess through a support shaft provided at one edge of the lid. A biasing means provided on the one end edge side of the lid for biasing the lid to move toward the open position; a locking means for locking the lid to a closed position; A resilient means for elastically contacting the inner surface of the lid locked at the position, and unlocking means for releasing the locked state of the lid locked by the locking means to the closed position,
The locking means and the resilient means are arranged on the housing corresponding to the other end side of the lid, and are provided apart from each other in the direction in which the other end extends. Can be rotated to a position close to the.

According to the present invention, there is provided a recording / reproducing apparatus provided with a lid opening / closing mechanism for opening and closing an opening recess through a support shaft provided at one edge of the lid in order to solve the above-mentioned problem. A recording / reproducing apparatus provided with a body opening / closing mechanism, wherein a mounting means for mounting a recording / reproducing medium disposed in an opening recess and recording or reproducing an information signal on the recording / reproducing medium mounted on the mounting means, Alternatively, recording / reproducing means for performing both of them, urging means provided on the one end side of the lid for urging the lid to move toward the open position, and moving the lid to the closed position Locking means for locking, resilient means for elastically contacting the inner surface of the lid locked at the closed position by the locking means, and unlocking means for releasing the locked state of the lid locked by the locking means to the closed position. Equipped, locking means and popping The step and the step are arranged on the housing corresponding to the other end side of the lid and are provided separately in the direction in which the other end extends, and the lid is closer to the bottom of the opening concave portion of the housing than the closed position. It is made rotatable.

Therefore, in the recording / reproducing apparatus provided with the lid opening / closing mechanism and the lid opening / closing mechanism of the present invention, the lid is securely locked at the closed position regardless of the position where the lid is pressed. At the same time, the flatness of the lid is maintained in the closed position.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a recording / reproducing apparatus provided with a lid opening / closing mechanism and a lid opening / closing mechanism according to the present invention.

In the embodiments described below, the present invention relates to a recording / reproducing unit for performing recording and / or reproducing on a recording / reproducing medium such as an optical disk, or both, and an operation for performing various operations. The present invention is applied to a recording / reproducing apparatus called a so-called stereo set in which an operation unit having buttons arranged thereon, a speaker unit for outputting a reproduction sound of a recording / reproduction medium, and the like are integrally held in one outer casing. Things.

The recording / reproducing apparatus 1 includes an outer housing 2 and an arrangement housing 3 held by the outer housing 2 and having necessary members arranged therein.
The arrangement housing 3 is held at the upper end of the outer housing 2 (see FIGS. 1 and 2). The arrangement housing 3 is provided as a housing in which a lock means for locking an inner lid, which will be described later, in a closed position and a lock releasing means for unlocking the inner lid are arranged.

A plurality of small holes are formed in substantially the entire front portion 2a of the outer casing 2, and the portion where the small holes are formed is formed as a speaker net portion 4 (see FIGS. 1 and 2). . A speaker unit (not shown) is arranged in the outer casing 2 at a position corresponding to the speaker net unit 4.

The placement housing 3 is formed in a horizontally elongated box shape opened downward, and the front end 3a of the upper surface is located slightly above the other portion 3b (hereinafter referred to as "covering portion 3b"). On the front end 3a, various operation switches 5, 5,... For adjusting the volume, for opening and closing the outer cover described later, and for turning on and off the radio are arranged. And
The placement housing 3 is held by the outer housing 2 so that the upper surface of the front end 3a is located on the same plane as the upper surface of the outer housing 2 (see FIGS. 1 and 2).

A liquid crystal display 6 for displaying a radio frequency or the like is arranged on the left side of the front surface of the housing 3 and a mini disk (MD) M is inserted and removed on the right side.
A D insertion opening 7 is formed (see FIGS. 1 and 2).

At the left end of the covering portion 3b of the placement housing 3 is formed at the front end thereof a concave button supporting portion 8 which is opened upward to support an unlocking button which will be described later. A through-hole 8a is formed in the center of the bottom surface of (2) (see FIG. 6).

The rear end of the outer lid 8 is rotatably supported at the rear end of the covering portion 3b of the housing 3 for placement (FIGS. 1 and 2).
The cover 3b is opened and closed by the outer lid 9. Opening / closing of the outer lid 9 is performed electrically by operating the operating switch 5 for opening / closing the outer lid 9 among the operating switches 5, 5,... Disposed on the front end 3a. Has become.

Various operation buttons 10, 10,... For MD editing, recording and reproduction for MD and compact disc (CD), etc. are arranged on the right side of the covering portion 3b. A substantially rectangular shallow opening recess 11 is formed on the left side of the covering portion 3b.
In the center of the bottom surface 12 of the disc 1, a CD is mounted, and a disk table 13 is provided as mounting means for rotating the CD. An optical pickup 14 is arranged on the side of the disk table 13 (FIG. 1). 2 and FIG. 3).

The optical pickup 14 is provided as recording / reproducing means for recording and / or reproducing information signals on a CD, or both of them, and has an objective lens in the radial direction of the mounted CD. Are movably arranged.

The bottom surface 12 is formed so that its peripheral edge portion 12a is located slightly above the other portion, and the left and right ends of the rear end portion of the peripheral edge portion 12a have vertically elongated insertion holes 12a.
b, 12c are formed. An arrangement hole 12d is formed at a position near the right end of the front end of the peripheral portion 12a, and a support recess 12e is formed at a position near the front end of the left end of the peripheral portion 12a (see FIG. 3). The support recess 1
Through holes 12f, 12f are formed at both left and right edges of the bottom surface of 2e (see FIG. 6).

Support pins 3e, 3f, 3g are vertically suspended from the inner surface at the front end of the bottom surface 12 (see FIG. 6).

The inner lid 15 is for opening and closing the opening recess 11, and its rear end is rotatably supported by a portion near the rear end of the placement housing 3 (FIGS. 2, 4 and 4). FIG.
reference).

The inner lid 15 has a lid 16 and legs 17, 17 protruding from the left and right side edges of the rear end of the lid 16, respectively.
Are integrally formed.

In the recording / reproducing apparatus 1, when it is desired to close both the outer lid 9 and the inner lid 15 in a state where the outer lid 9 and the inner lid 15 are both opened, the outer lid 9 is closed. If it is electrically closed, the inner surface of the outer lid 9 is
The inner lid 15 is also closed by pressing the outer surface of the inner cover 15 in the closing direction. When it is desired to open both the outer lid 9 and the inner lid 15 in a state where both are closed, the outer lid 9 is electrically opened and then the inner lid 1 is opened.
5 is manually opened as described below.

In the state where the inner lid 15 is closed and the outer lid 9 is opened, the inner lid 15 is closed while being locked by the locking means as described later. In a state where the inner lid 15 is closed together with the outer lid 9, the inner lid 15 is pressed by the pressing protrusion of the outer lid 9, and the opening recess 1 is smaller than a state where only the inner lid 15 is closed.
1 is positioned close to the bottom surface 12. When the outer lid 9 is opened from this state, the inner lid 15 is slightly rotated in the opening direction by the urging means described later, but is locked by the locking means so as not to be opened simultaneously with the outer lid 9. Has become.

In order to make the inside of the opening recess 11 visible when the inner lid 15 is closed, the lid 16 is formed with a transparent part 16a to form a peeping part 16a. 2 and 4). A chucking pulley 18 is provided to protrude from the center of the inner surface of the lid 16 (see FIG. 2), and when the CD is mounted on the disc table 13 and the inner lid 15 is closed, the CD is chucked. Chucking is carried out between the king pulley 18 and the disc table 13 and held by them.

The chucking pulley 18 is connected to the lid 16.
The outer lid 9 and the inner lid 1 are provided so as to be rotatable and movable in a direction orthogonal to the inner surface of the lid 16.
5 and the inner table 15 alone is closed, the disk table 1 is closed.
3 can be properly chucked to the CD,
And it can rotate.

A locking piece 19 protrudes from a position near the right end of the front end of the inner surface of the lid 16, and the lower end of the locking piece 19 projects rightward to form a locking portion 19a. (See FIGS. 4 and 6). A pressing piece 20 is protruded from a position near the front end on the left end of the inner surface of the lid 16 (FIG. 4).
And FIG. 6).

The legs 17, 17 protrude from the lid 16 in a direction perpendicular to the base 16, and the bases 21, 21,
21 and a substantially semicircular supported portion 22 continuing from 21 (see FIGS. 4 and 5). The supported portion 22 of the leg portion 17 located on the right side among the legs 17 has a spring support portion 22a formed at a position near the front end on the left side surface. The supported portions 22, 22 have portions 22b, 22b corresponding to the center of the circle, rotatably supported by the arrangement housing 3 via support shafts 23, 23.

That is, as shown in FIG. 4 and FIG. 5, the support portions 3 which are separated from the position corresponding to the left and right end edges of the lid portion 16 on the rear surface portion of the arrangement housing 3 to the front and left respectively.
c, 3c and support parts 3d, 3d are protruded, and both ends of the support shafts 23 are fixed to the support parts 3c, 3c and support parts 3d, 3d, respectively. And leg 1
The portions 22b, 22b of 7, 17 are rotatably supported by intermediate portions of the support shafts 23, 23, whereby the inner lid 15
Are rotatably supported by the arrangement housing 3. In addition, inner lid 1
Of the supporting portions 3d, 3d provided corresponding to the right side edge of the support member 5, the spring supporting member 24
Is attached.

The leg 1 of the support shaft 23 located on the right side
The coil portion 25a of the torsion coil spring 25 is supported at a portion between the support member 7 and the left support portion 3d (see FIG. 4). Then, one end 25b of the torsion coil spring 25 is locked by the spring support 22a formed on the right leg 17, and the other end 25c is locked by the front end of the spring support member 24 (FIG. 5). reference). Therefore, the inner lid 15 is urged by the torsion coil spring 25 to move in the counterclockwise direction as viewed in FIG. That is, the torsion coil spring 25 plays a role as an urging means for urging the inner lid 15 to rotate. The opening of the inner cover 15 is performed by the rotating force applied by the torsion coil spring 25 when the lock on the inner cover 15 is released as described later. The stoppers (not shown) projecting from the side surfaces of the portions 17, 17 come into contact with the lower surface of the placement housing 3.

As described above, the turning power in the opening direction is urged by the torsion coil spring 25 in the inner lid 15, but the torsion coil spring 25 is provided on the right side of the inner lid 15. Therefore, the inner lid 15 is likely to be inclined slightly upward to the right such that the right edge is located above the left edge.

A receiving member 26 is supported movably in the vertical direction in a supporting concave portion 12e formed in the opening concave portion 11 of the arrangement housing 3 (see FIGS. 3 and 6). An upward moving force is urged by the coil spring 27. The receiving member 26 and the compression coil spring 27 are provided as resilient means for elastically contacting the inner surface when the inner lid 15 is closed.

The receiving member 26 has a substantially cylindrical main portion 26a having an upper end closed, insertion portions 26b, 26b vertically extending from the left and right of a lower edge of the main portion 26a, and lower end edges of the insertion portions 26b, 26b. Are formed integrally with the engagement claws 26c, 26c protruding outwardly from the front.

The receiving member 26 is supported by the support recess 12e in a state where the insertion portions 26b, 26b are respectively inserted from above from the through holes 12f, 12f formed in the bottom surface of the support recess 12e. Then, a first compression coil spring 27 is interposed between the lower surface of the upper end wall of the main portion 26a and the bottom surface of the support recess 12e, whereby the receiving member 26 is urged upward by a moving force. When the main part 26a is not pressed from above, the receiving member 26 engages with the engaging claws 26c, 26c.
Are engaged with the lower opening edges of the through holes 12f, 12f, and this position is the upper moving end of the moving range of the receiving member 26.

A lock release button 28 is supported movably in the vertical direction by a button support portion 8 formed in the opening concave portion 11 of the arrangement housing 3 (see FIGS. 3, 4 and 6). And
The lock release button 28 is connected to the inner lid 15 together with a rotating member described later.
It serves as a lock release means for releasing the lock on.

The lock release button 28 has a disk-shaped operation portion 28a located at the upper end, a peripheral wall portion 28b vertically provided from the periphery of the operation portion 28a, and a shaft vertically provided from the center of the lower surface of the operation portion 28a. The operating shaft 28c is formed integrally with the operating shaft 28c (see FIG. 6), and the lower end of the operating shaft 28c is
Is formed so as to be located below that.

The lock release button 28 is supported by the button support 8 in a state where the operation shaft 28c is inserted from above into a through hole 8a formed on the bottom surface of the button support 8. And the operation unit 2
A second compression coil spring 29 is interposed between the lower surface of the button support 8a and the bottom surface of the button support portion 8, whereby the upward movement force is applied to the lock release button 28. The lock release button 28
Is provided with a retaining portion (not shown) projecting from the peripheral wall portion 28b so that the retaining portion prevents the retaining portion 8 from coming off upward.

Lock release button 28 in placement housing 3
A pivot member 30 is rotatably supported by a bearing (not shown) projecting from the inner surface of the housing 3 at a position directly below (see FIG. 6).

The rotating member 30 has a flat plate-like pressed part 31, a supported shaft part 32 formed at the right end of the pressed part 31 and extending in the front-rear direction, and a pressing member protruding from the lower surface of the pressed part 31. The pressing portion 33 is formed integrally with the pressing portion 33, and the pressing portion 33 is formed to protrude obliquely downward and rightward from the lower surface of the pressed portion 31 and extend rightward therefrom, and the right end surface 33a is formed as a pressing surface. Have been. The rotating member 30 is rotatably supported by the bearing portion, in which the supported shaft portion 32 protrudes from the inner surface of the housing 3.

When the lock release button 28 is not operated, that is, when the operation portion 28a is not pressed downward, the lower surface of the operation shaft 28c is pressed by the pressed portion 31 of the rotating member 30. (See FIG. 6).

A moving member 34 is supported below the front end of the bottom surface 12 of the opening recess 11 so as to be movable in the left-right direction inside the housing 3 (see FIGS. 3 and 6).

The moving member 34 has a main portion 35 that is long in the left-right direction.
And a lock portion 36 protruding upward from a position near the right end of the main portion 35 and a spring hook portion 37 protruding downward from the main portion 35.

The main part 35 is formed with three supported holes 35a, 35b, 35c which are long in the left-right direction.
a, 35b, and 35c are formed near the left end of the main portion 35, substantially at the center in the left-right direction, and near the right end, respectively. The spring hook 37 projects downward from a portion of the main portion 35 between the supported hole 35b and the supported hole 35c.

The lock portion 36 is provided so as to protrude upward from a portion immediately on the left side of the right supported hole 35c.
5 and a vertical portion 38 extending in the vertical direction.
8 has an engagement claw 39 protruding leftward from the upper end thereof, and the engagement claw 39 has a pressed edge 39a which is directed substantially obliquely upward to the left at its tip end.

The moving member 34 is supported by a supported hole 35 of the main portion 35.
The support pins 3e, 3f, and 3g, which are vertically provided from the inner surface of the bottom surface 12, are inserted into the a, 35b, and 35c, respectively. It is supported movably in the direction. In the state where the moving member 34 is supported by the arrangement housing 3 in this way, the falling-off preventing members (not shown) provided on the support pins 3e, 3f, 3g prevent the moving member 34 from dropping downward. Then, in a state where the moving member 34 is supported by the arrangement housing 3, the lock portion 36 is inserted into the arrangement hole 12 d formed in the bottom surface 12 of the opening recess 11, and left and right while being inserted into the arrangement hole 12 d. It is possible to move in the direction.

The moving member 34 is mounted on the housing 3 as described above.
, A tension coil spring 40 is stretched between the spring hook portion 37 and the support pin 3f located in the middle, whereby the moving member 34 is urged to move leftward. . In a state where no moving force to the right is applied to the moving member 34, the moving member 34 is located at the left moving end (see FIG. 6), and the support pin 3
e, 3f, 3g are the supported holes 35a, 35b, 3
5c is located at the right end. In this state, the left end surface 35d of the main portion 35 of the moving member 34 is in contact with the pressing surface 33a of the pressing portion 33 of the turning member 30, and the left end surface 35d is moved by the turning member 30 as described later. It is formed as a pressed surface pressed against the pressing surface 33a when rotated.

The opening / closing operation of the inner lid 15 with the outer lid 9 opened will be described below (see FIGS. 6 to 10).

As shown in FIG. 6, when the inner cover 15 is opened to the upper moving end, that is, when the inner cover 15 is in the open position, the moving member 34 is moved by the spring force of the extension coil spring 40. The pressing surface 35d is located at the left moving end, and is in contact with the pressing surface 33a of the rotating member 30. The rotating member 30 is in a state where the upper surface of the pressed portion 31 faces upward and the pressing surface 33a faces right. In addition, the receiving member 26 is engaged with the engagement claws 26c, 26c by the elastic force of the first compression coil spring 27 inserted between the lower surface of the upper end wall of the main portion 26a and the bottom surface of the support recess 12e.
Are located at the upper moving end in a state of being engaged with the lower opening edges of the through holes 12f, 12f.

When the outer surface of the inner lid 15 is pressed downward from the open position, the locking portion 19 a of the locking piece 19 formed on the inner lid 15 is pressed against the pressed edge 39 a of the locking portion 36 of the moving member 34. Abut. Since the pressed edge 39a is formed so as to face obliquely upward to the left, the inner lid 15 is further pushed downward and the locking portion 19a is moved downward, so that the locking portion 19a is pressed against the pressed portion. The moving member 34 is moved rightward against the spring force of the extension coil spring 40 while the edge 39a is in sliding contact (see FIG. 7).

When the inner lid 15 is further pressed downward and the upper edge of the locking portion 19a coincides with the lower edge of the engaging claw 39 of the lock portion 36, the moving member 34 is moved by the spring force of the extension coil spring 40. The engagement claw 39 is moved to the left and positioned above the engagement claw 19a in a state in which the lower surface is in contact with the upper surface of the engagement portion 19a (see FIG. 8).

If the pressing of the inner lid 15 is released in this state, the lower surface of the engaging claw 39 contacts the upper surface of the locking portion 19a, and the inner lid 15 cannot move upward. It is closed in a locked state. That is, this position is the closed position of the inner lid 15. And the inner lid 1
Immediately before the member 5 reaches the closed position, the pressing piece 20 formed on the inner lid 15 contacts the upper surface of the main portion 26a of the receiving member 26. The piece 20 presses the receiving member 26 slightly downward, that is, the receiving member 26 is in elastic contact with the pressing piece 20.

As described above, the inner lid 15 tends to be inclined slightly upward to the right by the urging force of the torsion coil spring 25, but the receiving member 26 is provided on the left edge of the inner lid 15 in the closed position. Since the inner lid 15 is elastically contacted with the pressing piece 20, the inclined state of the inner lid 15 is corrected, and the flatness is maintained.

In this state, however, the peripheral edge of the lower surface of the inner lid 15 does not abut on the peripheral edge 12a of the bottom surface 12 of the opening recess 11, and the locking piece 19 does not abut on the bottom surface 12. The opening concave portion 11 of the arrangement housing 3 is formed, and the inner lid 15 is rotatable further downward. That is, a so-called overstroke is provided in the opening concave portion 11 so that the inner lid 15 can rotate to a position closer to the bottom surface 12 than the closed position.

Accordingly, when the inner lid 15 is further pressed downward and pivoted, the locking portion 19a moves away from the engaging claw 39, and the receiving member 26 is pressed downward by the pressing piece 20 and is received. The first compression coil spring 27 inserted between the lower surface of the upper end wall of the main portion 26a of the member 26 and the bottom surface of the support recess 12e is compressed.

The inner lid 15 is moved downward until the peripheral edge of the lower surface of the lid 16 contacts the peripheral edge 12a of the bottom surface 12 (see FIG. 9). When the pressing on the inner lid 15 is released in this state, the inner lid 15 is rotated in the opening direction by the urging force of the torsion coil spring 25 that is urging the inner lid 15 to move in the opening direction. Is done.

When the inner lid 15 is rotated in the opening direction in this manner, since the engaging claws 39 are already positioned above the locking portions 19a as described above, the locking portions 19a are When the inner lid 15 is engaged with the engagement claws 39, the rotation of the inner lid 15 in the opening direction is stopped, and the inner lid 15 is returned to the closed position again and locked (see FIG. 8). And the inner lid 15
Is rotated in the opening direction, the receiving member 26 is moved upward by the elastic force of the first compression coil spring 27 in contact with the pressing piece 20 of the inner lid 15, and the inner lid 15 reaches the closed position. In this state, the pressing piece 20 of the inner lid 15 is brought into elastic contact with the first compression coil spring 27 from below (see FIG. 8). Therefore, the flatness of the inner lid 15 is maintained.

The reason why the over-stroke is provided so that the inner lid 15 can rotate from the closed position to the lower side is that, for example, when the inner lid 15 is pressed downward, the right edge is on the left edge side. Even when the inner lid 15 is rotated in an inclined state so as to be positioned higher than the upper side, the engagement claw 39 is reliably positioned above the locking portion 19a by pressing the inner lid 15 to a position lower than the closed position. This is to ensure that the inner lid 15 is locked in the closed position by being positioned.

The opening of the inner lid 15 locked in the closed position is performed as follows by pressing the lock release button 28 supported by the button support portion 8 of the arrangement housing 3 downward.

When the upper surface of the operation portion 28a of the lock release button 28 is pressed downward, the lower surface of the operation portion 28a and the button support portion 8 are pressed.
The second compression coil spring 29 interposed between the bottom surface and the bottom surface is compressed, and the operation shaft 28c is moved downward (FIG. 10).
reference).

When the operating shaft 28 is moved downward, the pressed portion 31 of the rotating member 30 which has been in contact with the lower surface thereof is pressed, and the rotating member 30 rotates counterclockwise as viewed from the front. (See FIG. 10).

When the rotating member 30 is rotated in the counterclockwise direction, the moving member 34 that has been in contact with the pressing surface 33a
Is pressed from the left, and the moving member 34 is moved rightward against the spring force of the extension coil spring 40. Then, due to the rightward movement of the moving member 34, the engaging claws 39 of the lock portion 36 move rightward from the locking portions 19 a of the locking pieces 19 of the inner lid 15, whereby the inner lid 1 is moved.
5 is released.

When the locked state of the inner lid 15 is released,
Since the rotating power in the opening direction is urged by the torsion coil spring 25 on the inner lid 15, the inner lid 15 is rotated in the opening direction to reach the open position (see FIG. 6). The lock release button 28 can be released by releasing the pressing on the operation section 28a.
The second compression coil spring 29 returns to the original position by the elastic force (see FIG. 6).

Thus, in the recording / reproducing apparatus 1, as described above, the so-called so-called "rotation" in which the inner lid 15 can be rotated in the opening recess 11 to a position closer to the bottom surface 12 than the closed position. A receiving member 2 having an overstroke and elastically contacting the inner surface of the inner lid 15 in the closed position.
6, the receiving member 26 and the locking portion 36 of the moving member 34 for locking the inner lid 15 to the closed position
Because it is arranged corresponding to the opposite side edge side in,
One side edge of the locking piece 19 that engages with the locking portion 36 when the inner lid 15 is to be closed is formed on one side edge side where the locking piece 19a is not formed than on the other side edge side where the locking piece 19 is not formed. Even if it is inclined to be positioned above, the locking portion 19a is reliably positioned below the engaging claw 39 of the lock portion 36, and the locking of the inner lid 15 at the closed position is reliably performed. At the closed position, the receiving member 26 is elastically contacted with another side edge of the inner surface of the inner lid 15 so that the flatness of the inner lid 15 at the closed position can be maintained.

In particular, like the recording / reproducing apparatus 1 described above,
A torsion coil spring 25 for urging the inner cover 15 to rotate in the opening direction and a lock portion 36 for locking the inner cover 15 to the closed position are both arranged corresponding to one side edge of the inner cover 15. In this case, it is easy to incline so that one side edge of the inner lid 15 is located at the upper side, but even in such a case, the overstroke provided in the opening recess 11 and the other side of the inner lid 15 By the receiving member 26 arranged corresponding to the edge and elastically contacting the inner surface of the inner lid 15 at the closed position, locking and flatness retention of the inner lid 15 at the closed position can be reliably performed.

Therefore, in the recording / reproducing apparatus 1, even if any part of the outer surface of the inner cover 15 is pressed downward,
5, there is no need to attach a mark indicating the pressed portion on the outer surface of the inner lid 15 and specify the position to be pressed, so that the appearance of the inner lid 15 does not deteriorate. Further, since the transparent portion of the inner lid 15 is not covered with the mark, there is no inconvenience that the inside of the opening concave portion 11 is not easily seen.

Further, since the flatness of the inner lid 15 in the closed position is held by the receiving member 26, it is not necessary to form the inner lid 15 with a particularly high rigidity material in order to maintain the flatness of the inner lid 15. The materials used, for example,
A good-looking material such as an acrylic plate can be used.

[0079]

As is apparent from the above description, the opening / closing mechanism for the lid according to the present invention is a mechanism for rotating the lid rotatably supported by the housing via a support shaft provided on one end side. An opening / closing mechanism for a lid body that opens and closes an opening concave portion formed in the housing by movement, provided on the one end edge side of the lid body, and biasing means for biasing the lid body to move toward an open position; A locking means for locking the lid to the closed position, a resilient means for elastically contacting the inner surface of the lid locked to the closed position by the locking means, and a locking state of the lid locked by the locking means to the closed position. A lock releasing means for releasing, wherein the locking means and the resilient means are arranged on the housing corresponding to the other end side of the lid and are provided separately in a direction in which the other end extends. Rotates from the closed position to a position closer to the bottom of the housing opening recess So that when the lid is to be closed, the side corresponding to the side on which the locking means is disposed is located farther from the bottom surface of the opening recess than the side on which the locking means is not disposed. Can be reliably locked at the closed position of the lid even when the lid is inclined, and the resilient means is provided on the inner surface on the side where the locking means of the lid is not arranged at the closed position. The elasticity makes it possible to maintain the flatness at the closed position of the lid.

Therefore, even if any part of the outer surface of the lid is pressed in the closing direction, the lid is securely locked, and a mark indicating the portion to be pressed is attached to the outer surface of the lid to determine the position to be pressed. Since there is no need to specify, the appearance of the lid does not deteriorate, and if a transparent part is formed on the lid, this part will not be covered with the mark There is no inconvenience that the inside of the opening recess becomes difficult to see.

Further, since the flatness of the lid at the closed position is maintained by the resilient means, it is not necessary to form the lid with a particularly rigid material in order to maintain the flatness of the lid, and extremely high rigidity is obtained. , For example, a conventionally used good-looking acrylic plate or the like can be used.

According to the second aspect of the present invention, the urging means and the locking means are both disposed on one side edge of the lid extending in a direction orthogonal to the direction in which the one end edge extends, and the resilient means is provided. Is disposed on the other side edge side of the lid, and in particular, one side edge side of the lid body on which the biasing means is disposed is located farther from the bottom surface of the opening recess than the other side edge side. Even in the case where it is easy to incline, since the resilient means is arranged on the other side edge side of the lid, it is possible to reliably maintain the flatness at the closed position.

Further, in the recording / reproducing apparatus provided with the lid opening / closing mechanism according to the present invention, the lid is rotatably supported by the casing via a support shaft provided on one end side. A recording / reproducing apparatus provided with a lid opening / closing mechanism for opening / closing an opening recess formed in a recording medium, wherein the mounting means is disposed in the opening recess and has a recording / reproducing medium mounted thereon, and the recording / reproducing medium mounted on the mounting means is provided. Recording or reproduction of an information signal, or
Recording / reproducing means for performing both of them, urging means provided on the one edge side of the lid for urging the lid to move toward the open position, and a lock for locking the lid to the closed position Means, resilient means for resiliently contacting the inner surface of the lid locked to the closed position by the locking means, and unlocking means for releasing the locked state of the lid locked to the closed position by the locking means, The means and the resilient means are disposed on the housing corresponding to the other end side of the lid, and are provided apart from each other in the direction in which the other end extends, and the lid is located closer to the opening recess of the housing than the closed position. Since it is possible to rotate to a position close to the bottom surface, the side corresponding to the side where the locking means is arranged when closing the lid is more from the bottom of the opening recess than the side where the locking means is not arranged. The lid tilts so that it is located at a distance Even if that is the state,
The lid can be reliably locked at the closed position, and in the closed position, the resilient means is elastically contacted with the inner surface on the side where the locking means of the lid is not arranged, so that the flat surface at the closed position of the lid is Degree can be maintained.

Therefore, even if any part of the outer surface of the lid is pressed in the closing direction, the lid is securely locked, and the outer surface of the lid is marked with a mark indicating a portion to be pressed and the position to be pressed is determined. Since there is no need to specify, the appearance of the lid does not deteriorate, and if a transparent part is formed on the lid, this part will not be covered with the mark There is no inconvenience that the inside of the opening recess becomes difficult to see.

Further, since the flatness of the lid at the closed position is maintained by the resilient means, it is not necessary to form the lid with a particularly high-rigidity material in order to maintain the flatness of the lid. , For example, a conventionally used good-looking acrylic plate or the like can be used.

According to the fourth aspect of the present invention, both the urging means and the locking means are disposed on one side edge of the lid extending in a direction perpendicular to the direction in which the one end edge extends, and the resilient means is provided. Is disposed on the other side edge side of the lid, and in particular, one side edge side of the lid body on which the biasing means is disposed is located farther from the bottom surface of the opening recess than the other side edge side. Even in the case where it is easy to incline, since the resilient means is arranged on the other side edge side of the lid, it is possible to reliably maintain the flatness at the closed position.

Note that the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment when practicing the present invention.
These should not be construed as limiting the technical scope of the present invention.

[Brief description of the drawings]

1 shows an embodiment of a recording / reproducing apparatus provided with an opening / closing mechanism for a lid and an opening / closing mechanism for a lid according to the present invention, together with FIGS. 2 to 10; FIG. It is a perspective view showing the state where the outer lid of the device was opened and the inner lid was closed.

FIG. 2 is a perspective view showing a state where both an outer lid and an inner lid of the recording / reproducing apparatus are opened.

FIG. 3 is an enlarged plan view showing an opening concave portion.

FIG. 4 is an enlarged plan view showing the inner lid in a closed state with a part of the inner lid cut away.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

6 shows an opening and closing operation of the inner lid together with FIGS. 7 to 10, and is an enlarged cross-sectional view showing a state where the inner lid is opened and is in an open position. FIG.

FIG. 7 is an enlarged cross-sectional view showing a state in which the inner lid is pressed downward and the locking piece and the engagement claw are in sliding contact with each other.

FIG. 8 is an enlarged cross-sectional view showing a state where the inner lid has been pressed downward and the inner lid has reached the closed position, following FIG. 7;

FIG. 9 is an enlarged cross-sectional view showing a state in which the inner lid has been rotated to a position lower than the closed position, following FIG.

FIG. 10 is an enlarged sectional view showing a state immediately after the lock on the inner lid is released.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Recording / reproducing apparatus, 3 ... Housing (housing) for arrangement, 11 ... Opening recessed part, 13 ... Disk table (mounting means), 14 ...
Optical pickup (recording / reproducing means), 15: inner lid (lid), 23: support shaft, 25: torsion coil spring (biasing means), 26: receiving member (spring means), 27: first compression Coil spring (elasticity means), 28 ... Lock release button (lock release means), 30 ... Rotating member (lock release means), 36 ...
Lock part (lock means)

Claims (4)

[Claims] 1. A lid opening / closing mechanism for opening / closing an opening recess formed in a housing by rotation of a lid rotatably supported by the housing via a support shaft provided on one end side. Biasing means provided on the one end edge side of the lid to urge the lid to move toward the open position; locking means for locking the lid to the closed position; and locking to the closed position by the locking means. Resilient means for elastically contacting the inner surface of the closed lid, and unlocking means for releasing the locked state of the lid locked by the locking means to the closed position, wherein the locking means and the elastic means are provided on the lid. The lid is disposed on the housing corresponding to the other end edge side and is spaced apart in the direction in which the other end edge extends, and the lid is rotatable from the closed position to a position closer to the bottom surface of the opening concave portion of the housing. A lid opening / closing mechanism, which is characterized in that: 2. The urging means and the locking means are both arranged on one side of the lid extending in a direction perpendicular to the direction in which the one edge extends, and the resilient means is arranged on the other side of the lid. The lid opening / closing mechanism according to claim 1, wherein: 3. A lid opening / closing mechanism for opening and closing an opening recess formed in the housing by rotation of a lid rotatably supported by the housing via a support shaft provided on one end side. Recording / reproducing apparatus, comprising: a mounting means which is arranged in an open recess and on which a recording / reproducing medium is mounted; and recording and / or reproducing an information signal on / from the recording / reproducing medium mounted on the mounting means. Recording / reproducing means for performing, a biasing means provided on the one end edge side of the lid for biasing the lid to move toward the open position, a locking means for locking the lid to the closed position, A locking means for resiliently contacting the inner surface of the lid locked at the closing position by the locking means; and a lock releasing means for releasing the locked state of the lid locked at the closing position locked by the locking means. Is located on the other edge of the lid The cover is disposed in the housing and is spaced apart in the direction in which the other end extends, and the lid is rotatable from the closed position to a position closer to the bottom surface of the opening recess of the housing. A recording / reproducing apparatus provided with a lid opening / closing mechanism. 4. The urging means and the locking means are both arranged on one side of the lid extending in a direction perpendicular to the direction in which the one edge extends, and the resilient means is arranged on the other side of the lid. 4. A recording / reproducing apparatus provided with a lid opening / closing mechanism according to claim 3, wherein: