JP3158320B2 - Tape drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape drive such as a cassette player, and more particularly to a cover opening / closing mechanism.

[0002]

2. Description of the Related Art FIGS. 6 to 8 show a portable cassette player as an example of a tape drive. 1 shows a cassette player as a whole. The exterior of the cassette player 1 is composed of a center cabinet 2 as a first cabinet having a substantially rectangular main surface, a rear cabinet 3 as a second cabinet, and a lid 4. It is configured.

The center cabinet 2 has a cassette mounting portion 5 on which a tape cassette is mounted, and a tape driving mechanism (mechanical deck) 6, a circuit board, and the like are fixed on the back side thereof. The rear cabinet 3 constitutes the back cover of the cassette player, and is locked and connected to the center cabinet 2 by locking claws 7 protruding at a plurality of locations on the peripheral edge of the rear cabinet 3. Is securely fixed by a plurality of screw stops not shown in the figure.

The lid 4 is rotatably mounted on the first side wall of the center cabinet 2 so as to open and close the cassette mounting portion 5. A leg plate 9 having a shaft hole 8 as a pressed portion is formed symmetrically to protrude along a second side wall orthogonal to the first side wall of the center cabinet, while the second base plate of the center cabinet 2 is correspondingly formed. On the inner surface side of the side wall 2, shaft posts 10 are protrudingly provided on both left and right sides of the cassette mounting portion 5. The cover 4 is attached to the center cabinet 2 by fitting the shaft holes 8 of the leg plates 9 into the shaft posts 10. It is pivotally supported so as to be able to open and close.

When the lid 4 is opened to a certain angle, a part of the leg plate 9 comes into contact with a predetermined portion (stopper portion) of the center cabinet 2 to further rotate the opening in the opening direction. It is being regulated.

In the cassette player configured as described above, a mechanism for urging the cover 4 in both the opening direction and the closing direction in order to improve the operation feeling when the cover 4 is opened and closed. Is built-in.

As shown in FIGS. 9 and 10, the mechanism includes a torsion coil spring 11 as an urging member. One end 11a of the torsion coil spring 11 is attached to the side wall of the center cabinet 2 and the other end is connected to the other end. 11b is fixed to the leg plate 9 of the lid 4, and a force is applied by the torsion coil spring 11 so that the lid 4 is rotated in the opening direction and the closing direction at a certain opening angle. .

That is, when the cover 4 is opened from the closed state, the force of the torsion coil spring 11 is initially acting in the closing direction of the cover 4, so that the cover 4 is opened against the force of the spring 11. That is, when the dead point of the spring 11 (the point at which the force of the spring stops acting) is exceeded, the force of the spring 11 acts in a direction to open the lid 4, so that the lid 4 is held in the open state. (FIG. 9A).

Conversely, when the cover 4 is closed from the open state, the force of the spring 11 acts in the opening direction of the cover 4 at first, so that the force of the spring 11 is resisted. However, when the dead point of the spring 11 is exceeded, the force of the spring 11 acts in a direction to close the lid 4, so that the lid 4 is held in a closed state (FIG. 9B).

[0010]

The conventional tape drive as described above has a structure in which a torsion coil spring 11 as an urging member is incorporated between the center cabinet 2 and the leg plate 9 of the lid 4, so that it is assembled. The workability at the time was poor. The present invention has been made to solve such a problem.

[0011]

In order to achieve the above object, the present invention provides a tape cassette having a substantially rectangular main surface, a cassette mounting portion on one of the main surfaces, and a tape cassette mounted on the other. A first cabinet provided with a driving mechanism for driving the driving mechanism and a circuit board for controlling the driving mechanism;
A second cabinet fixed to the first cabinet so as to cover the drive mechanism and the circuit board; and a lid rotatably provided on the first side wall of the first cabinet so as to open and close the cassette mounting portion. A body, and a pressed part protruding from a surface of the lid on the cassette mounting part side and provided along a second side wall orthogonal to the first side wall of the first cabinet;
The second cabinet is provided so as to protrude from the surface on the drive mechanism side, is movable along the second side wall, and presses the pressed portion by being urged toward the first side wall. A pressing urging portion, a protruding portion provided in a middle portion of the pressing urging portion, protruding in a longitudinal direction of the second side wall and toward the first side wall, and a lid body provided in a midway portion of the pressed portion. When the cover is closed, the projection is located closer to the second cabinet than the projection, and when the lid is closed, after the projection is pushed over the projection, the pressing bias is applied. When the lid-side portion of the pressed projection is pressed against the projection by the urging force of the first side wall side of the portion, the lid is rotationally urged in the closing direction and the lid is opened. At this time, after the pushed projection has passed over the projection, the urging force causes the pushed projection to be located on the second cabinet side. There by being pressed by the projecting portion, the lid is obtained by a structure that is rotationally biased in the opening direction.

[0012]

According to the present invention as described above, the second cabinet is fixed to the first cabinet in a state where the pressing and biasing portion is assembled in the second cabinet in advance in the assembling process of the tape drive device. The lid opening / closing mechanism can be easily assembled, and assembling work efficiency is remarkably improved as compared with the related art.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Parts corresponding to those of the prior art shown in FIGS. I do.

In this embodiment, a cam member 13 and a torsion coil spring (elastic member) 14 are provided as pressing urging portions for urging the lid 4 in the opening direction and the closing direction, and these are used as a second cabinet. It is attached to the rear cabinet 3.

The cam member 13 is opposed to the semi-cylindrical pressed projection 15 formed in the middle of the leg plate 9 of the lid 4 and is located in the middle in the longitudinal direction of the second side wall of the center cabinet 2. It has a cam surface 13a provided with a chevron-shaped protrusion protruding toward the first side wall, and includes a pair of upper and lower guides 16a, 16b and 17a, 17b provided on the inner side of the side wall of the rear cabinet 3. It is incorporated so as to be linearly movable along the second side wall of the center cabinet 2 so as to be sandwiched therebetween. Reference numeral 18 provided on the cam member 13 is a stopper projection that abuts on the guide portion 17a and regulates the moving range of the cam member 13.

On the other hand, the torsion coil spring 14 is a member for imparting a moving pressing force to the cam member 13, and includes a mounting support column 19 and a locking piece 20 erected at the bottom of the rear cabinet 3 and a cam member. 13 is incorporated. That is, the coil portion 14a of the torsion coil spring 14 is fitted into the mounting support column 19, and one end portion 14b is engaged with the locking piece 20.
And the other end 14 c is connected to the cam member 13.
The cam member 13 is moved by the force of the torsion coil spring 14 in a direction in which the cam surface 13a presses the pressed projection 15 of the leg plate 9 of the lid 4. Being energized.

When the lid 4 is closed in the mechanism thus constructed, after the pressed projection 15 has passed over the projection on the cam surface 13a of the cam member 13, the pressing urging section Is pressed by the urging force of the cam member 13 by the torsion coil spring 14 on the lid 4 side of the pressed projection 15 on the cam surface 13a of the cam member 13 so that the lid 4 is closed. (FIG. 1A). When the lid 4 is opened, the pressed projection 15 climbs over the projection on the cam surface 13a of the cam member 13, and then is pressed by the urging force of the cam member 13 by the torsion coil spring 14 of the pressing urging unit. When the portion of the pressing projection 15 on the rear cabinet 3 side is pressed by the projection on the cam surface 13a of the cam member 13, the lid 4 is urged to rotate in the opening direction (FIG. 1B).

In the lid opening / closing mechanism of the present embodiment as described above, the contact surface between the pressed projection 15 of the lid 4 and the cam surface 13a of the cam member 13 is large, and the surface pressure can be reduced.
The sliding abrasion resistance due to repeated opening and closing of the lid 4 is greatly improved. In addition, since a large contact surface can be obtained, the leg plate 9 of the lid 4 can be used.
Stable contact can be ensured even when deformation occurs during molding and assembling, and strict management of parts is not required. Further, since the moving amount of the cam member 13 is relatively small, the dead space inside the player is small, and the torsion coil spring 14 can be used under stable stress, and the force applied to the mounting support column 19 and the locking piece 20 is small. The creep characteristics are also good.

This mechanism operates the cam member 13 during assembly.
In addition, the torsion coil spring 14 can be integrated into the rear cabinet 3 in a planar manner from directly above, so that the workability is good, and the pressed projection 15 of the lid 4 and the cam surface 13a of the cam member 13 face each other. Therefore, the rear cabinet 3 and the center cabinet 2 are combined and fixed, and at the same time, the assembly of the opening / closing mechanism of the lid is automatically completed. As described above, in the configuration of the present embodiment, the cam member 1 serving as a pressing urging member is
By fixing the rear cabinet 3 to the center cabinet 2 in a state in which the torsion coil springs 3 and the torsion coil springs 14 are incorporated, the lid opening / closing mechanism can be easily assembled, and disassembly at the time of repair (service) is also easy. , Good workability is obtained.

FIG. 5 shows another embodiment, that is, in this embodiment, the cam of the embodiment shown in FIGS. 1 to 4 is used as a pressing urging portion for urging the lid 4 in the opening direction and the closing direction. Instead of the member 13 and the torsion coil spring 14, a leaf spring member 23 having an inclined bent surface 23a provided with a V-shaped protrusion by bending in the middle is used and fixed to the bottom of the rear cabinet 3. Thus, the pressing projection 15 of the cover 4 is directly pressed. In the case of this embodiment, since a single leaf spring is used as the pressing urging member, FIG.
Since the number of parts is smaller than that of the embodiment shown in FIG. 4 and the number of assembling steps can be reduced, the assembling work efficiency is further improved.

[0021]

As is apparent from the above description, the present invention provides a first cabinet to which a lid is freely opened and closed, and a second cabinet fixed to the first cabinet and constituting a back cover. In the tape drive device having, by having a structure in which a pressing urging member for urging the lid body in the opening and closing direction is attached to the second cabinet,
The opening / closing mechanism of the lid can be easily assembled, and disassembly at the time of repair (service) is also facilitated. In each case, much better workability can be provided as compared with the related art. Further, according to the present invention, the configuration in which the pressing urging unit is movably arranged along the second side wall of the first cabinet minimizes the influence of the moving space of the pressing urging unit in the thickness direction of the apparatus. Since it can be stopped, there is a great effect in reducing the size of the tape driving device main body.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment, where A is a state where a lid is closed, and B is a state where the lid is open.

FIG. 2 is a longitudinal sectional view of a main part of the same.

FIG. 3 is an exploded perspective view of the waist.

FIG. 4 is a perspective view of a main part of the same.

FIG. 5 is a side view showing another embodiment.

FIG. 6 is a perspective view of a cassette player.

FIG. 7 is a perspective view showing a state where the rear cabinet is removed.

FIG. 8 is an exploded perspective view of a center cabinet and a lid.

FIG. 9 is a side view showing a conventional example, where A is a state where a lid is open, and B is a state where the lid is closed.

FIG. 10 is a longitudinal sectional view of a main part of the same.

[Explanation of symbols]

 Reference Signs List 1 cassette player (electronic device) 2 center cabinet (first cabinet) 3 rear cabinet (second cabinet) 4 lid 9 leg plate 13 cam member 14 torsion coil spring (elastic member) 23 leaf spring member

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsushi Sase 3-9-17 Nishigotanda, Shinagawa-ku, Tokyo Toyo Building Sony Engineering Co., Ltd. (72) Inventor Hiroyuki Sasaki 3-9-17 Nishigotanda, Shinagawa-ku, Tokyo Toyo Bldg. Sony Engineering Co., Ltd. (56) References Jiraku Sho 62-11250 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 33/02

Claims (3)

(57) [Claims] 1. A drive mechanism for driving a tape of a tape cassette to be mounted on one side of a main surface having a substantially rectangular shape, a cassette mounting portion on one side of the main surface, and a circuit board for controlling the drive mechanism. A first cabinet that is fixed to the first cabinet so as to cover the drive mechanism and the circuit board; and a first cabinet of the first cabinet that opens and closes the cassette mounting portion. A lid rotatably provided on a side wall of the first member;
A pressed portion provided along a second side wall orthogonal to the first side wall of the cabinet, and a second portion provided so as to protrude from a surface on the drive mechanism side of the second cabinet; A pressure urging portion which is movable along the side wall and is urged toward the first side wall to press the pressed portion; and A protrusion protruding in the longitudinal direction of the second side wall and on the side of the first side wall; and a middle part of the pressed part, the second part being closer to the second part than the protrusion when the lid is closed. A pressed projection located on the cabinet side; and when the lid is closed, after the pressed projection has climbed over the projection, the first side wall of the pressing biasing portion is provided. Due to the urging force, the portion of the pressed projection on the lid side protrudes. The cover is urged to rotate in the closing direction by being pressed by the portion, and when the cover is opened, after the pressed projection has passed over the protrusion, the urging force is applied. The tape drive device, wherein a portion of the pressed projection on the second cabinet side is pressed by the projection, whereby the lid is urged to rotate in an opening direction. 2. The tape driving device according to claim 1, wherein the pressing urging unit includes: a cam having the protruding portion; and an elastic member for urging the cam toward the first side wall. . 3. The pressing urging portion, wherein the projecting portion is formed by bending and the first urging portion is formed.
The tape drive device according to claim 1, wherein the tape drive device is configured by a leaf spring that applies an urging force to a side wall of the tape drive.