JP2568504B2 - Chuck device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chuck device having a pushing function for use in an automatic tape insertion / ejection device or the like.

2. Description of the Related Art In recent years, an automatic broadcasting system (AV system) such as an audio tape or a video tape has been adopted in the broadcasting industry, cultural centers in various places, and library facilities.

The tape deck used in the automatic broadcasting system is
The mainstream is the one with an automatic loading function, but it is necessary to insert the tape just before the hook of the tape chuck interferes with the deck, and then push the tape to a certain position on the tape deck. In addition, there is a demand for a reduction in access time from when a tape is inserted into a tape deck to a tape deck so that short broadcasts can be continuously performed.

Hereinafter, the above-described conventional tape insertion chuck device and its operation will be described with reference to the drawings.

FIG. 2 shows a conventional chuck device and its movement. In FIG. 2, 1 is a driving motor, 2 is a chuck body, 3 is a plate cam, 4 is a cam follower, 5 is a sliding portion, 6 is a tension spring, 7 is a chuck, 8 is a tape,
9 is a deck. The plate cam 3 is rotated by the driving motor 1 and moves the sliding portion 5 via the cam follower 4 to chuck or unchuck the tape 8.

The operation of the chuck device configured as described below will be described.

FIG. 2A shows a state in which the tape 8 has been inserted into the deck 9. In this state, the tape 8 is not loaded on the deck 9. Next, from the state of FIG.
Is rotated to unchuck the tape 8.

Further, the entire chuck device is retracted from the deck 9. Next, as shown in FIG. 2B, the drive motor 1 is rotated to close the chuck jaws 7, and in this state, the entire chuck device is advanced to push the tape 8 into the deck 9. When the tape 8 is pushed to the same plane as the deck 9,
The tape 8 is completely set on the deck 9 by the automatic loading function of the deck 9.

Problems to be Solved by the Invention However, in the above-described configuration and movement, after uncunching the tape, once the entire chuck is retracted,
Further, there is a disadvantage that a time loss such as advancing is generated.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an optimal chuck device for minimizing a time loss when a tape is inserted into a deck.

Means for Solving the Problems And an effective means of the present invention for solving the above problems is one drive motor attached to the main body, and a plate cam and an end face cam that rotate by receiving the torque of the drive motor. , A sliding part urged by a spring via a cam follower so as to move along the cam surface of the plate cam, and a spring attached to the sliding part to hold a part. And a lever which is urged to abut against the end face cam surface and moves in a direction to push out the article. Move,
When the chuck claw releases the article, the timing is such that the lever is moved in a direction to push the article.

Operation The operation of this effective means is as follows. That is, when the drive motor is rotated from the tape chuck state, first, the tape enters the unchuck state. When the drive motor is further continuously rotated, the pushing portion pushes the tape while the chuck remains in the unchucked state.
As a result, the time loss when the tape is pushed into the deck is minimized.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 denotes a driving motor which is mounted on a main body 12 via a bracket 11. 13 is a plate cam, 14 is an end cam, and the torque of the drive motor 10 is transmitted by a shaft 15. Reference numeral 30 denotes a sliding portion to which a chuck claw 16 is attached, which is pulled by a tension spring 17 and pressed against the plate cam 13 via a cam follower 18. Reference numeral 19 denotes a lever for pushing the tape 31, which is pressed against the end face cam 14 via the cam roller 21 by the tension spring 20. Reference numeral 22 denotes a coupling between the driving motor 10 and the shaft 15, reference numeral 23 denotes a light shielding plate, and reference numeral 24 denotes a photocoupler, which forms a cycle timer.

The operation of the chucking device with the pushing function configured as described above will be described.

When the driving motor 10 is rotated forward by a certain angle, the plate cam 13 and the end surface cam 14 also rotate forward through the shaft 15, and the sliding portion 30 is moved along the cam surface of the plate cam 13 through the cam follower 18 through the cam follower 18. Moves to the tape chuck state. Next, drive motor 10
If the angle is reversed by the same angle as
The tape 16 is in a tape unchuck state, and when it is further inverted by a predetermined angle, the cam roller 21 moves along the cam surface of the end face cam 14, and the lever 19 is advanced to push the tape 31. The fixed angle can be detected and controlled by the light shielding plate 23 and the photocoupler 24.

Effects of the Invention As described above, according to the present invention, by providing the chucking device with a pushing function that moves in conjunction with the operation of the unchuck, time loss when the tape is pushed into the deck can be minimized. At the same time, it is possible to ensure the reliability of attaching and detaching the cassette.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a chuck device according to an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are front views of a partial cross section of a conventional chuck device and the chuck device at the time of pushing out a work. It is a front view. 10… drive motor, 13… plate cam, 14… end cam,
18 ... Cam follower.

Claims (1)

(57) [Claims] 1. A cam comprising one drive motor (10) attached to a main body (12), a plate cam (13) to which the torque of the drive motor (10) is transmitted and rotating, and an end cam (14). A sliding portion (30) urged to be close to each other by a spring (17) via a cam follower (18) so as to move along the cam surface of the plate cam (13); A chuck jaw (16) attached to the section (30) and capable of gripping the article (31); and a lever (urged to abut against the end cam (14) surface and moved in a direction to push out the article (31) 19), the timing of the displacement of the end cam (14) is moved in a direction in which the chuck claws (16) of the sliding portion (30) are separated from each other, and the chuck claws (16) are moved to the article (31). ), Move the lever (19) in the direction to push out the article (31). Timing and the chuck device.