JPH0754599B2 - Transport drive device by opening and closing the lid - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyance drive device for opening and closing a lid used for loading a cassette or the like.

2. Description of the Related Art Conventionally, most cassette loading methods are suction type.

The above cassette loading device will be described below with reference to the drawings.

FIGS. 4a and 4b show a conventional cassette loading device. In FIG. 4a, 30 is a holding frame, 31 is a side frame, 32 and 33 are axial projections, 34 and 35 are levers, 36 is a link, 37
Is a drive lever and 38 is a spring.

As a cassette (not shown) is inserted into the holding frame 30, the side frame 31 engages with the axial projections 32, 33 of the holding frame 30 fitted in the inverted L-shaped guide grooves 31a, 31b of the side frame 31. Lever 34,35 pivoted on
Is rocked and the spring 38 exceeds the maximum load point to press the holding frame 30 to increase the couple applied to the levers 34 and 35, and even if the holding frame 30 is not pressed, the lever 38 is biased by the spring 38. , 35 are swung, and the shaft-like projections 32, 33 engaged with the levers 34, 35 are attached to the side frame 31.
The holder frame 30 moves along the inverted L-shaped guide grooves 31a and 31b and conveys the cassette to a predetermined position, as shown in FIG. 4b. To eject the cassette, the levers 34 and 35 are swung by pressing the roller 37 pivotally supported by the link 36 in the direction of arrow A from the state shown in FIG. 4b, and the spring 38 is still pressed beyond the maximum load point. Then, the levers 34, 35 are swung by the urging force of the spring 38 to move the shaft-shaped projections 32, 33 along the inverted L-shaped guide grooves 31a, 31b of the side frame 31, and the holding frame 30 ejects the cassette ( For example, Japanese Utility Model Publication No. 46-8339).

Problems to be Solved by the Invention However, in the above-described device, since the click operation is performed with the maximum urging force of the spring at the dead point, it is difficult to control the operation speed in the middle, and mechanical noise becomes large, which is not preferable. It was

Therefore, the present invention provides a transfer driving device that can be used for loading a cassette or the like by utilizing the opening / closing operation of the lid.

Means for Solving the Problems In order to solve the above problems, in the transport driving device for opening and closing the lid of the present invention, an internal gear is formed on the outer side of the pair of rotation supporting arms of the lid, and On the substrate from the outside, a small gear with a fan-shaped protrusion and a locking arm formed on one side, a fan-shaped protrusion of the small gear and a drive arm with a fan-shaped recess having an appropriate play angle are formed by springs in the circumferential direction. Has a spring for urging the shaft to be pivotally supported, the small gear being engaged with the internal gear of the lid, and a spring for urging the lid in the opening direction, and means for locking and unlocking the lid. It is configured as.

Effect The present invention can smoothly move the mechanical element by swinging the driving arm in conjunction with the opening / closing operation of the lid and engaging and coupling the other mechanical element with the driving arm according to the above-described configuration.

Embodiment A lid device according to an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, 1 is a lid, 2 is a substrate, 4 is a pinion, and 6 is a drive arm. The lid 1 is rotatably supported on the chassis 12 by a rotation support arm 1a so as to be openable and closable, and an internal gear 1b is formed on the rotation support arm 1a. On the other hand, the pinion 4 and the drive arm 6 are coaxially supported on the substrate 2, and the locking arm 4a of the pinion 4 and the locking portion 6a of the drive arm 6 are urged in the circumferential direction by the springs of eight. The wall of the fan-shaped protrusion 4b of the cage gear 4 and the fan-shaped recess 6b of the drive arm 6 are in contact with each other. The base plate 2 is fixed to the chassis 12 at a position where the small gear 4 meshes with the internal gear 1b formed on the support arm 1a of the lid 1. The lid 1 is biased in the opening direction by 10 torsion springs. 2 and 3, the left side surface is shown, and the right side surface is also symmetrical.

From the state shown in FIG. 2, the lid 1 is resisted against the biasing force of the torsion spring 10.
When is pressed and rotated by hand, the small gear 4 meshed with the internal gear 1b formed on the support arm 1a of the lid 1 rotates, and the drive arm 6 biased by the spring 8 rotates. The state where the lid 1 is rotated to the fully closed position is the third
It is a figure. Even if the drive arm 6 stops after finishing the required work, the fan arm 6b formed in the drive arm 6 and the fan-shaped projection 4b formed in the pinion 4 have a small amount of play due to the difference in fan opening angle. The rotation of the gear 4 is not hindered, and the closing movement of the lid 1 is sufficiently rotated to the locking position so that the torsion spring 10 accumulates.

When the lid 1 is opened, a locking means (not shown) is released to release the stored force of the torsion spring 10, whereby the lid 1 is rotated and the small gear 4 is rotated to form a fan-shaped projection formed on the small gear 4. The wall of 4b and the wall of the fan-shaped recess 6b of the drive arm 6 come into contact with each other, so that the drive arm 6 reliably rotates following the opening movement of the lid 1.

As described above, according to the present invention, the internal gear is formed on the outer side surface of the rotation supporting arm of the lid, and the small gear having the fan-shaped projection and the locking arm formed on one side is engaged with the fan-shaped projection of the small gear. A drive arm formed with a fan-shaped recess having an appropriate amount of play is coaxially supported by a base plate, and is urged by a spring in a circumferential direction to each other so that the internal gears of the rotary support arm are attached so as to mesh with each other. Other mechanical elements can be moved smoothly in conjunction with the opening and closing operations of.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a transfer driving device according to an embodiment of the present invention by opening and closing a lid, FIG. 2 is a side view of the transfer driving device when the cover is opened and closed, and FIG. FIG. 4 is a side view of the transfer driving device when fully closed, and FIG. 4 is a side view of a conventional cassette loading device. 1 ... Lid, 2 ... Substrate, 4 ... Small gear, 6 ... Drive arm.

Claims (1)

[Claims] 1. A lid in which an internal gear is formed on the outer side of a pair of turning support arms that are pivotally supported by a support shaft, and a rotation spindle that is located outside the turning support arms of the lid and near the support shaft of the turning support arm. And a small gear that meshes with the internal gear and has a fan-shaped projection and a locking arm formed on one side surface, and a fan-shaped projection of the fan-shaped projection that is axially supported coaxially with the small gear and engages with the fan-shaped projection of the small gear. A drive arm formed with a fan-shaped recess larger than the opening angle, a spring for biasing the pinion gear and the drive arm in the circumferential direction, a base plate for axially supporting the pinion gear and the drive arm, and a direction for opening the lid. A transport drive device for opening and closing a lid, comprising: a spring for urging the lid and means for locking and unlocking the lid.