JPH0351792Y2 - - Google Patents

Description

[Detailed explanation of the invention] Technical field This invention is a videotape recorder (hereinafter referred to as
This invention relates to a damper device for a cassette house (referred to as a VTR).

BACKGROUND TECHNOLOGY In a VTR, a tape cassette is inserted into a cassette house that is fed upward from an opening on the top surface of the cabinet, and by pushing the tape cassette down through the opening, the cassette is loaded onto a reel stand located below the cassette house. Some devices include a so-called up-down cassette loading mechanism in which the cassette is ejected from the opening by moving the house upward. In this type of cassette loading mechanism, the cassette protection lid provided on the cassette house is open to the top, which creates an unnecessary large space, ie, dead space, above the cassette house. On the other hand, the seed loading mechanism is provided with a damper mechanism to dampen the ejection operation of the cassette. Incidentally, conventionally, this damper mechanism has been provided on the outside of a side wall of a side plate constituting a chassis that supports a cassette house. Therefore, the overall width of the cassette loading mechanism becomes at least that much wider, requiring more installation space and posing an obstacle to downsizing the VTR.

In addition, this type of damper mechanism was developed in 1978.
-There is a speed braking mechanism disclosed in Publication No. 62481,
In this braking mechanism, the rack is engaged with the wheel of the damper unit, and this rack is moved in parallel by the movement of the link to brake the speed of the link. Therefore, the rack itself requires space due to its size. The empty space cannot be used effectively, and the space in the direction of movement of the rack increases. In particular, the depth in the direction of movement of the rack increases, so there is a drawback that the device cannot be miniaturized.

Disclosure of the invention The purpose of this invention is to reduce the dead space of the cassette house as much as possible, to make effective use of it, and to minimize the overall width of the cassette loading mechanism, thereby making the VTR more compact.

The purpose of this is to provide a damper means that performs a damper action by rotational movement in a space formed in a cassette house, a damper arm that rotates with the rotation of the damper means, and a damper arm that rotates with the rotation of the damper means. The damper means is connected to the support arm member, and the damper means is rotatably driven via the damper arm in accordance with the forward or backward movement of the support arm member, and the damper acts on the approaching or separating movement of the cassette house. This can be achieved by giving

According to this invention, a damper mechanism for damping the approaching and separating movements of the cassette house is provided on one side of the space of the cassette house, and the damper means is rotationally driven by the rotational movement of the damper arm, thereby damping the movement of the cassette house. Therefore, the space inside the cassette house, which should originally be a dead space, can be used effectively, and the damper mechanism can be constructed using a minimum space. Furthermore, unlike the conventional damper mechanism in which the damper mechanism is provided on the outside of the side plate, the overall width of the cassette loading mechanism can be minimized. Since there is no need to consider the space in the movement direction and the space for its arrangement, the depth and length of the device can be minimized. Therefore, it is possible to downsize the cassette loading mechanism and, by extension, the VTR. Furthermore, since the damper mechanism can be of the same structure as the conventional one, the manufacturing cost is also low.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the invention will be described in detail with reference to the drawings.

FIG. 1 shows a VTR cassette loading device to which this invention is applied, in which a pair of side plates 13 and 14 forming a chassis are installed at a predetermined interval on both sides of a chassis base 10, sandwiching reel stands 11 and 12. has been done. Guide grooves 131 and 141 extending in the longitudinal direction are formed in the upper portions of the side plates 13 and 14 near the front ends in the cassette insertion direction, respectively. Side plate 1
One ends of a pair of first arms 15, 16 are pivotally attached to positions near the rear ends of arms 3, 14. One end of the first arm 15 is constantly biased by a spring 17 attached to the front of the side plate 13 in a direction to move the cassette house 20 upward.

The cassette house 20 is housed in and out between the side plates 13 and 14, and its upward movement causes it to be sent upward through an opening (none of which is shown) provided on the top surface of the main body cabinet to eject the cassette and to remove the cassette. Side plate 1 by pressing down
The cassette is lowered and stored between 3 and 14, and the inserted cassette is set on reel stands 11 and 12. The cassette house 20 is formed into a box shape with front and rear openings, and has openings 201 and 2 at the bottom for placing the cassette 21 on the reel stands 11 and 12.
02 is provided. Locking pieces 203 and 204 for positioning and locking the cassette 21 on both sides of the rear end of the bottom.
is formed by bending. A pair of guide grooves 205 and 20 are provided near the front of the top of both sides of the cassette house 20.
6 is formed along the longitudinal direction. Shaft portions 22 and 23 provided inside the other ends of the first arms 15 and 16 are movably fitted into the guide grooves 205 and 206.

A connecting shaft 24 is rotatably suspended between the upper rear sides of both sides of the cassette house 20, and one ends of second arms 25, 26 are fixed to both ends protruding from the side walls of the connecting shaft 24. Second arm 25, 26
The other ends intersect with the first arms 15 and 16 in a substantially X shape, respectively, and are inserted into the guide grooves 131 and 14 of the side plates 13 and 14.
The shaft portions 27, 2 extend to the position 1 and are provided on the outside thereof.
8 are movably fitted into the guide grooves 131 and 141. and the first and second arms 1
5, 25 and 16, 26 are pin 2 at their intersections.
9, and the cassette house 20
By pressing down, the other end shaft portions 27 and 28 move into the guide grooves 205 and 206, and the shaft portions 22 and 23 move forward in the cassette insertion direction along the guide grooves 131 and 141, contracting into a pantograph shape and closing the cassette. A house 20 is housed between side plates 13 and 14. Also, the other shaft parts 27 and 28 are inserted into the guide grooves 205 and 206 by the cassette inject operation.
The shaft portions 22 and 23 move rearward along the guide grooves 131 and 141, expand and expand in a pantograph shape, and raise the cassette house 20 upward from the opening of the cabinet. Cassette house 2
0 is the first and second arm 15, 16 and 2
5 and 26 on the side plates 13 and 14.

A locking member 30 is pivotally attached to the longitudinally intermediate portion of the side plate 13, and when the other end shaft portions 27, 28 of the second arms 25, 26 move to their rear ends along the guide grooves 131, 141. , a recess 30 provided in the locking member 30 by the protruding portion of the shaft portion 27 toward the outside of the side plate.
1. By this,
The cassette house 20 is positioned and locked in the raised position, that is, in a cassette insertion/ejection position inclined at a predetermined angle with respect to the horizontal, with the front opening 210 facing slightly upward. Locking member 30
is a spring 31 whose one end is attached to the front part of the side plate 13.
The concave portion 301 is always urged in the direction of engagement with the shaft portion 27.

A space 32 is formed above the cassette insertion portion of the cassette house 20. On one side of this space, as shown in FIG. 2, a mounting plate 3 is extended from below the guide groove 205 of the cassette house 20.
3, and a damper 40 is disposed on this mounting plate 33. The damper 40 is, for example, an oil damper, and a rotation shaft 41 is rotatably provided at the center thereof. Rotation axis 41
One end of the damper arm 42 is fitted and fixed to the shaft 41 so as to be rotatable about the shaft 41. A recess 43 surrounded by a wall 421 is provided on the lower surface of the free end of the damper arm 42, and the shaft portion 22 provided at the other end of the first arm 15 is inserted into the recess 43.
The end protruding inward from the guide groove 205 is loosely fitted.

In the above configuration, the first and second arms 15, 25 and 16, 26 shown in FIG. From the state set to , operate the eject button (not shown). Then, the cassette house 20 is unlocked and the first arm 15 is released from the spring 17.
The cassette house 20 is rotated about the pivot point at one end in a direction in which the cassette house 20 is moved upward. This allows the first and second arms 15, 25 and 1
6 and 26 rotate about the pivot point at one end of each in the direction of expansion and expansion from the contracted state shown in FIG. Along with this, the other end shaft portions 22, 23 and 27, 28
are guide grooves 205, 206 and 131, 141
, as shown by arrows 100 and 101, and move the cassette house 20 upward from between the side plates 13 and 14. Then, the shaft portion 22 is connected to the guide groove 2.
05, the movement is transmitted to the damper arm 42 through the recess 43, causing it to rotate in a predetermined direction about the rotation axis 41 as shown by the arrow 102 in FIG. This rotation is rotation axis 4
1 to the damper 40, and is gently damped by its resistance force. Accordingly, the movement of the shaft portion 22 along the guide groove 205 is buffered. Therefore, the extension motion of the first and second arms 15, 25 and 16, 26 becomes gentle due to the buffering force applied to the shaft portion 22. As a result, the cassette house 20 is gently cushioned and rises. Thus, when the first and second arms 15, 16 and 25, 26 extend and stand up, the cassette house 2
As shown in FIG. 1, the cassette 0 is taken out from the opening of the above-mentioned cabinet in a state where it rises upward and is slightly inclined, and the cassette is ejected.

On the other hand, when loading the cassette 21, it is sufficient to insert the cassette 21 into the cassette house 20 and then push down the cassette house 20. As a result, the cassette house 20 is housed between the side plates 13 and 14, as shown in FIG. 3, by substantially reversing the procedure described above, and the cassette 21 is loaded onto the reel stands 11 and 12.

According to this embodiment, since the damper mechanism is provided on one side of the upper space 32 of the cassette house 20, unlike the case where the damper mechanism is provided on the outside of the side plate 13 or 14, the damper mechanism is provided on one side of the upper space 32 of the cassette house 20. Effective use can be achieved.
Moreover, the total width between the side plates 13 and 14 can be minimized, and the installation space can be reduced.

Note that the damper mechanism may be provided on either side of the side plate 13 or 14.

Furthermore, if the damper mechanism is desired to provide a damper action only during the upward movement of the cassette house, a unidirectional clutch means or the like may be provided between the damper arm 42 and the shaft portion 22 provided on the first arm 15, for example. It would be better to intervene.

Further, in the embodiment, the cassette house 20 is supported by the first and second arms 15, 16 and 25, 26 which cross in an X shape, but the invention is not limited to this. ,
It can be widely applied to cassette loading mechanisms of various configurations, such as those with parallel arms and those with one arm on each side.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a VTR cassette loading device to which the present invention is applied, Fig. 2 is an exploded perspective view of the main parts thereof, Fig. 3 is a perspective view illustrating the cassette ejecting operation by the device, and Fig. 4 FIG. 2 is a perspective view of a main part similarly explaining the operation. 20...cassette house, 32...space department, 4
0... Damper, 15... First arm (support arm member), 42... Damper arm.

Claims (1)

[Scope of utility model registration request] a chassis, a cassette house that is capable of approaching or separating from the chassis and that, when approached by the chassis, attaches a cassette housed therein to a reel stand disposed inside the chassis, one end of which is attached to the chassis; a cassette, the other end of which is connected to the cassette house, supports the cassette house so that it can approach or move away from the chassis, and is moved forward or backward in conjunction with the approach or separation movement; In the loading device,
A damper means that performs a damper operation by rotational movement is disposed in a space formed in the cassette house, and a damper arm that rotates with the rotation of the damper means is provided, and the damper arm causes the damper to move. The damper means is connected to the support arm member, and the damper means is rotatably driven via the damper arm in accordance with the forward or backward movement of the support arm member, and the damper means is connected to the damper means when the cassette house approaches or separates. A damper device for a cassette house configured to impart an action.