JP2593863Y2 - Door opening and closing mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing mechanism for closing a video cassette insertion slot of a video deck provided in a television.

[0002]

2. Description of the Related Art As shown in FIG. 5, a TV 94 with a video in which a video deck 90 and a television 92 are integrated has been proposed.

In this TV 94 with video, an arm 98 is rotatably supported at the back of an insertion slot 96 of a video cassette C provided at the upper part of the main body of the TV 94 with video. The door 100 opens and closes to cover the insertion slot 96.

By the way, the video cassette C is inserted into the insertion slot 96.
It is preferable that the entire door 100 be largely retracted above the video-equipped TV 94 and the insertion slot 96 be largely opened in order to make it easier to take out the door.

However, as shown in FIG. 6, in the type in which the rotation center O of the arm 98 is disposed above the inside of the insertion slot 96, since the arm 98 is substantially straight,
Can rotate only to the extent that its middle portion contacts the upper edge of the insertion slot 96. For this reason, the door 100 cannot be retracted above the TV with video 94, and the video cassette C is difficult to remove from the insertion slot 96.

Further, as shown in FIG. 7, if the rotation center O of the arm 98 is disposed below the insertion slot 96, the door 100
Is greatly open. However, on the contrary, in order to close the door 100, a slit S is formed at the bottom and the arm 9 is closed.
It is necessary to prevent the rotational movement of the slit 8 from being hindered, and a disadvantage arises that coins, dust and the like easily enter the device main body from the slit S.

[0007] Further, as shown in FIG.
In the opening / closing mechanism 0, a pair of brackets 102 are disposed inside the insertion slot 96 (see FIG. 6). A two-stage shaft 104 protrudes from the outer surface of the bracket 102, and a cylindrical shaft portion 106 formed at the rear end of the arm 98 is rotatably supported. A torsion spring 108 is mounted on the shaft portion 106 and a bush nut 110
It is fixed at. One end of the torsion spring 108 is engaged with an urging force adjusting block 112 provided on the bracket 102, and the other end is connected to the hook 11 of the arm 98.
4. As a result, the arm 98 is urged in the opening direction of the door 100 (the direction of arrow A). On the other hand, a projection 116 provided near the tip of the arm 98 is provided.
Are locked in the groove 120 of the lock member 118. The lock member 118 is fixed to both ends of a shaft 121 supported by a pair of brackets 102, and is urged by a spring 117 in a direction opposite to the arrow A.

When the lock member 118 is pushed in the direction of arrow B by an operation button (not shown) against the urging force of the spring 108 by such an opening / closing mechanism, the groove 12
The engagement between the arm 98 and the projection 116 is released, and the arm 98 is rotated by the biasing force of the torsion spring 108 about the two-stage shaft 104 until it comes into contact with the stopper plate 122 to open the door 100. ing. Also,
By pushing down the door 100 in the direction opposite to the arrow A, the protruding piece 116 is again locked in the groove 120, the arm 98 is fixed, and the insertion opening 96 is closed by the door 100. The opening speed of the door 100 is determined by the arm 9
The gear 124 is adjusted by meshing with a gear 124 formed at the center of rotation and a damper gear 126.

However, the conventional arms 98 are not separately supported by the two-stage shafts 104 of the brackets 102 provided on the left and right, and the two arms 98 do not rotate in synchronization. Therefore, for example, when the end of the door 100 is pushed down, the door 100 is bent, and only one of the arms 98 is rotated excessively, and one of the locking members 118 is rotated.
Lock, and the lock is incompletely locked.

[0010]

In consideration of the above facts, the present invention takes the above fact into account, and allows the door to be completely opened so that the video cassette can be easily taken out, and the door opening / closing mechanism in which the arm for opening / closing the door rotates synchronously. The purpose is to provide.

[0011]

A door opening / closing mechanism according to claim 1 is a door opening / closing mechanism for closing a video cassette insertion slot of a VCR provided in a television,
An arm that opens and closes the door and that bends in an opening direction of the door from a substantially middle portion to a mounting portion of the door, and extends downward from the bent portion of the arm when the door is open to allow rotation of the arm; A shielding part for shielding the slit to be formed,
It is characterized by having.

A door opening and closing mechanism according to a second aspect of the present invention is a door opening and closing mechanism for closing a video cassette insertion slot of a video deck provided in a television. A pair of arms, a gear portion formed at the center of rotation of the arm, and an interlocking gear fixed to both ends of a shaft rotatably supported in the insertion opening and meshing with the gear portion. Features.

[0013]

In the door opening and closing mechanism according to the first aspect, the arm that supports the door that closes the video cassette insertion opening so as to be able to open and close is bent in the opening direction of the door from the substantially middle portion to the mounting portion of the door. . For this reason, when the door is opened, the bent portion enters the upper edge of the insertion slot, so that the door can be completely opened without the arm hitting the insertion slot.

A slit is formed at the bottom of the insertion slot to allow rotation of the arm, and the arm draws a rotation locus along this slit. The shielding portion extending to the side shields the slit to prevent intrusion of dust and the like.

Further, in the door opening and closing mechanism according to the second aspect, a gear portion is formed at the center of rotation of the arm, and this gear portion meshes with the interlocking gear. The interlocking gear is fixed to both ends of a shaft rotatably supported in the insertion opening, and moves in conjunction with the rotation of the shaft. Therefore, even if a rotational force acts on one arm, it is transmitted to the other arm via the interlocking gear and the gear portion.
As a result, the pair of arms rotate in conjunction with each other.

[0016]

1 to 4 show a door opening / closing mechanism according to this embodiment.

As shown in FIG. 3, a video cassette C (see FIG. 1) is provided on the upper part of the housing 10 of the TV with video.
An insertion port 12 into which the is inserted is formed. The bottom of the insertion opening 12 is closed by a bottom plate 14 and both ends are provided with arms 1.
A slit S is formed on the movement locus so that 6 can rotate.

As shown in FIG. 1 and FIG.
0 (see FIG. 3), a pair of brackets 18 are disposed on both left and right ends. A two-stage shaft 20 is protrudingly provided at an upper rear portion of the bracket 18 so as to face each other. The arm 16 having a torsion spring 22 mounted on the outer periphery of a boss 21 is rotatably supported on the two-stage shaft 20. On the other hand, a large-diameter boss portion 24 is also formed on the back surface side of the boss portion 21, and the small-diameter portion 20 </ b> A of the two-stage shaft 20 penetrating the through hole 26 is fixed by a push nut 28 fitted into the boss portion 24. . One end of the torsion spring 22 is locked by a hook 30 provided near the center of rotation of the arm 16, and the other end presses a pressing surface 32A of a lock lever 32 described later. Thereby, the arm 16 is urged in the rotation direction of the arrow A about the two-stage shaft 20 by the torsion force of the torsion spring 22. Further, the lock lever 32 is also urged in the rotation direction of the arrow A.

As shown in FIG. 3, a mounting portion 36 extending in the rotation direction is formed at the tip of the arm 16. An arc-shaped door 38 is fixed to the mounting portion 36 in a sectional view. The arm 16 extends substantially linearly from the center of rotation, and is bent from the vicinity of the intermediate portion in the opening direction of the door 38 to form a concave portion 34 on the upper surface of the bent portion. Thus, by forming the concave portion 34 in the intermediate portion of the arm 16, the arm 16 rotates in the direction of the arrow A, and the stop surface 44 contacts the stopper 46 provided on the bracket 18 and stops rotating. The door 38 can be opened above the housing 10 without the arm 16 hitting the upper edge of the insertion opening 12 of the housing 10.

Further, a leg portion 42 extends downward from the lower surface of the bent portion of the arm 16. A shielding portion 42A bent outward of the insertion slot 12 is formed at the tip of the leg portion 42. When the door 38 is opened, the shielding portion 4A is formed.
2A shields the slit S to prevent intrusion of dust and the like.

As shown in FIGS. 1 to 3, a thin fan-shaped large-diameter gear 50 and a small-diameter gear 5 are provided at the rotation center of the arm 16.
2 are formed continuously. The small diameter gear 52 meshes with a damper gear 54 attached to the bracket 18 to regulate the rotation speed of the arm 16.

On the other hand, the large-diameter gear 50 is a fan-shaped interlocking gear 5.
6 is engaged. The boss 58 provided at the center of rotation of the interlocking gear 56 is
Are fixed to both ends of a shaft 62 supported by the shaft 62. The outer periphery of the boss 60 of the bracket 18 supports a boss 64 provided at the rotation center of the lock lever 32. Further, the boss portion 58 of the interlocking gear 56 is inserted into the boss portion 64 of the lock lever 32, and the leading end contacts the boss portion 60 of the bracket 18. The boss portion 64 of the lock lever 32 has a portion corresponding to the moving range of the interlocking gear 56 cut out so that the interlocking gear 56 can rotate. Thus, the interlocking gears 56 arranged on the left and right
3 and 4 rotate simultaneously with the rotation of the shaft 62 in the left and right directions as shown in FIGS.
6 and the cut-out wall 64A of the boss 64 abut against each other, so that the pair of lock levers 32 operate synchronously.

At the tip of the lock lever 32, a pawl 66
As shown in FIG. 3, the protruding piece 68 provided on the arm 16 in which the door 38 is closed is locked as shown in FIG. 3, and further, as shown in FIG. A is urged in the rotation direction of A. On the other hand, as shown in FIGS.
A lock arm 72 is inserted into a box-shaped casing 70 provided on the casing 8. The rear end of the lock arm 72 is bent at a substantially right angle, and an operation button 74 is formed at the bent end. The operation button 74 is provided with a through hole 76 provided in the housing 10.
(See FIG. 4). Further, a leg 78 extending in a diagonal direction at the rear end is provided at the tip of the lock arm 72.
Are formed. The leg 78 is provided with a lock arm 72.
When inserted into the casing 70, the diameter of the casing 70 is reduced, and after penetration, the diameter is elastically restored and the diameter is increased, and is locked to the opening edge of the casing 70. The tip of the lock arm 72 is
When the operation button 74 is pressed against the second operation surface 80, the lock lever 32 is rotated in the direction opposite to the arrow A against the urging force of the torsion spring 22. As a result, the projecting piece 68 of the arm 16 is released from the claw 66, and the arm 16 rotates in the direction of arrow A by the urging force of the torsion spring 22. The lock lever 32 is normally urged in the rotation direction of the arrow A by the torsion spring 22, but is prevented from rotating by the lock arm 72 and is kept at a fixed position.

Next, the operation of the door opening / closing mechanism according to this embodiment will be described. As shown in FIGS. 3 and 4, when the door 38 is closed, the arm 16 is urged by the torsion spring 22 in the rotation direction of the arrow A, but the claw 66 of the lock lever 32 is Lock the piece 68,
The rotation of the arm 16 is prevented.

When the operation button 74 is pressed, the distal end of the lock arm 72 pushes the operating surface 80 of the lock lever 32 in the direction of arrow B, and rotates the lock lever 32 in the direction opposite to arrow A. At this time, the other lock lever 3
2, the cut wall 64A is pushed by the end 56A of the interlocking gear 56 and rotated. As a result, the protruding piece 68 is disengaged from the claw 66, and the arm 16 is rotated about the two-stage shaft 20 in the direction of the arrow A by the urging force of the torsion spring 22, thereby opening the door 38. This opening speed is regulated to a constant speed by the engagement of the small diameter gear 52 and the damper gear 54, and further, by the engagement of the interlocking gear 56 fixed to both ends of the shaft 62 and the large diameter gear 50, the left and right arms 16. Rotate synchronously.

Since the arm 16 has the concave portion 34 in the middle portion, the door 38 can be moved to a position above the housing 10 without hitting the upper edge of the insertion opening 12 of the housing 10. For this reason, the door 38 is completely retracted from the insertion slot 12, and the removal of the video cassette C becomes easy. At this time, the shielding portion 42A of the leg 42
Shields the slit S and prevents intrusion of dust and the like.

Next, when closing the insertion slot 12 with the door 38, the door 38 is pushed down by hand. Even when the door 38 is flexible and a force acting to push down one arm 16 is applied. The rotational force of one arm 16 is transmitted to the other arm 16 by meshing between the large-diameter gear 50 and the interlocking gear 56 fixed to both ends of the shaft 62, so that the left and right arms 16 Rotate in the opposite direction to A. Therefore, there is no inconvenience such that only one arm 16 is locked by the lock lever 32.

As described above, when the arm 16 is pushed down through the door 38, the projecting piece 68 of the arm 16 is guided by the slope 66A of the claw 66, and the claw 66 is pushed down slightly in the direction opposite to the arrow A. , And is locked by the claw portion 66. Thus, the state where the door 38 is closed is maintained.

[0029]

According to the present invention, the door is completely opened, the video cassette can be easily taken out, and the arms for opening and closing the door rotate synchronously so that the two arms are securely locked. You.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a door opening and closing mechanism according to the present invention.

FIG. 2 is an exploded perspective view showing a door opening and closing mechanism according to the present invention.

FIG. 3 is a side view showing the closed state of the door opening / closing mechanism according to the present invention.

FIG. 4 is a side view showing an open state of the door opening / closing mechanism according to the present invention.

FIG. 5 is an overall schematic diagram showing a conventional TV with video.

FIG. 6 is a schematic side view showing a conventional door opening / closing mechanism of a video TV.

FIG. 7 is a schematic side view showing a door opening / closing mechanism of a conventional TV with a video.

FIG. 8 is a perspective view showing the structure of a conventional door opening / closing mechanism of a video TV.

[Explanation of symbols]

 16 Arm 42A Shielding part 50 Large diameter gear (gear part) 56 Interlocking gear 62 Shaft

Claims (2)

(57) [Scope of request for utility model registration] 1. A door opening / closing mechanism for closing a video cassette insertion slot of a video deck provided in a television, wherein the door is supported so as to be openable and closable in an opening direction of the door from a substantially middle portion to a mounting portion of the door. A door opening / closing mechanism, comprising: an arm that bends; and a shielding portion that extends downward from a bent portion of the arm when the door is open and shields a slit that allows rotational movement of the arm. 2. A door opening / closing mechanism for closing a video cassette insertion slot of a video deck provided in a television, comprising: a pair of arms for opening and closing both longitudinal ends of the door; and a rotation center of the arm. A door opening / closing mechanism, comprising: a gear portion formed in a portion; and an interlocking gear fixed to both ends of a shaft rotatably supported in the insertion opening and meshing with the gear portion.