JPH0333969Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cassette holder device for a VTR.

When a cassette is placed in the cassette holder, if the cassette is able to move within the holder, there is a risk that the cassette will not be set correctly at the loading position.

Therefore, as shown in Fig. 2, the cassette holder 1
A cassette holder device has been proposed in which a presser roller 6 is provided at the tip of a lever 4 which is pivotally supported, and the lever 4 is connected by a spring 8 to arms 31 and 32 that support the holder 1 and guide the raising and lowering of the holder ( Utility Model No. 55-52657).

The above device inserts cassette K into holder 1,
When the holder 1 is pushed down, the arms 31 and 32 fall down, and the lever 4 connected to the arm 31 by the spring 8 receives a downward force, whereby the presser roller 6 presses the top surface of the cassette K.

However, in the above device, the cassette K is held down regardless of whether or not the cassette K is in contact with the stopper 13 at the rear end of the holder, so there remains a problem in accurate positioning.

The technical problem to be solved by the present invention is to accurately position the cassette by placing the cassette against a stopper at the rear end of the holder before the cassette holder descends and reaches the loading position, and then to hold the cassette.

In order to solve the above-mentioned technical problems, the present invention provides a presser roller that can move up and down and rotate on the holder, and a presser roller that prevents the downward movement of the holder between the arm that guides the lifting and lowering of the holder and the presser roller. A conversion device is connected and installed to convert the rotation in the cassette retraction direction.

When a cassette is inserted into the holder and the holder is lowered, the presser roller 6 presses the top surface of the cassette as before, and as the holder descends, the conversion device operates to rotate the presser roller in the cassette retracting direction to remove the cassette. You can securely position it by hitting the stopper at the back end of the holder.

The present invention will be specifically described below based on embodiments shown in the drawings.

Although the drawing shows only the right half of the holder device, the left half has a similar structure.

Cassette holder 1 has cassette insertion slot 1 on the front.
4. A stopper 13 is provided at the rear end, and the support body 3
It is supported so that it can be raised and lowered.

The support body 3 is a pair of upper and lower arms 31 and 32 that are pivotally fixed to a bracket 21 erected on the chassis 2 so as to be rotatable in a vertical plane, and the tips of the arms 31 and 32 are attached to the side surface 12 of the holder 1. The holder 1 is supported horizontally by pivotally connecting the parts.

A main lever 4 is pivotally fixed to the side surface of the holder 1 with its free end facing rearward, and the free end of the lever 4 and an upper arm 31 are connected by a spring 8.

Further, a presser roller 6 is attached to the free end of the main lever 4 via an L-shaped auxiliary lever 5, and the presser roller 6 is a conversion device that converts the downward movement of the holder 1 into rotational movement of the presser roller 6. 9 are connected.

The auxiliary lever 5 includes an actuating piece 51 that runs along the main lever 4 and faces the pivot side of the main lever 4, and a round shaft that is perpendicular to the actuating piece 51, freely passes through the main lever 4, and projects into the holder 1. It consists of a piece 52 and a round shaft piece 5.
A presser roller 6 whose outer periphery is made of rubber is attached to the tip of the roller 2 with its center portion fitted and fixed onto a round shaft piece 52.

An engagement shaft 53 is formed approximately in the center of the actuating piece 51 of the auxiliary lever 5, and the free end of the actuating piece 51 is connected to a spring 81.
and is connected to the main lever 4.

A link plate 7 is pivotally fixed near the upper end of the upper arm 31, and a long hole 71 is opened in the longitudinal direction of the link plate 7, and the engagement shaft 53 of the auxiliary lever 5 is slidably fitted into the hole 71. .

The upper arm 31, the main lever 4, the auxiliary lever 5, the link plate 7, and the spring 81 constitute a converting device 9 that converts the downward movement of the cassette holder K into rotational movement of the presser roller 6.

The spring 81 that biases the auxiliary lever 5 has a weak force that supports the weight of the operating piece 51 of the lever 5 and makes the engagement shaft 53 contact the upper edge of the elongated hole 71 of the link plate 7. .

Further, the presser roller 6 is positioned by being pulled by a spring 8 between it and the upper arm 31 so that the distance between it and the bottom surface 11 of the cassette holder 1 corresponds to the thickness of the cassette K when the cassette holder 1 is in the raised position. .

When the cassette K is inserted into the holder 1 and the holder 1 is lowered, the arms 31 and 32 fall down, and the tension of the spring 8 causes the main lever 4 to rotate clockwise about the shaft 41.

As a result, the presser roller 6 on the auxiliary lever 4, which is pivotally fixed to the free end of the main lever 31, presses the top surface of the cassette.

While the arms 31 and 32 are falling down, the link plate 7 on the arm 31 pulls the auxiliary lever 5, causing the presser roller 6 to rotate counterclockwise. As a result, a force is applied to draw the cassette K to the back of the holder.

Therefore, even if there is a gap between the stopper 13 at the rear end of the holder and the cassette K, the cassette is reliably pulled in and positioned until it hits the stopper 13.

It should be noted that the rubber presser roller 6 tends to vary in size, and the presser roller 6 is positioned at the holder raised position by pulling the tip of the main lever 4 backward with a spring 8 and biasing it. Therefore, the gap between the presser roller 6 and the bottom surface 11 of the cassette may be narrower than the thickness of the cassette.

In this case, when inserting the cassette K into the holder 1, the presser roller 6 receives rotational force due to friction with the upper surface of the cassette.
Since it is fitted into the elongated hole 71 of the upper link plate 7 and connected to the arm 31, the rotation of the presser roller 6 is not hindered and the cassette K can be inserted smoothly.
Also, even in such a case, the upper end of the elongated hole 71 of the link plate 7 is connected to the engagement shaft 5 until the arm 31 reaches the lower end.
3, the cassette K can be reliably brought into contact with the stopper 13 by the insertion roller 6.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main part, and FIG. 2 is a perspective view of the main part of a conventional example. 1...Holder, 3...Support, 4...Main lever, 5...Auxiliary lever, 6...Press roller.

Claims (1)

[Claims for Utility Model Registration] A cassette holder device is provided with a cassette holding roller 6 that presses the top surface of a cassette on a cassette holder 1 that moves up and down while being supported by arms 31 and 32 that rotate in a vertical plane. The cassette pressing roller 6 is rotatably disposed on the cassette holder 1, and is placed between the arm 31 and the pressing roller 6 to prevent the movement of the holder 1.
A converting device 9 for converting the rotation in the cassette retraction direction is connected and provided, and the converting device 9 includes a main lever 4 pivoted to the holder 1, and a presser roller pivoted to the free end side of the main lever 4. 6, a link plate 7 that pivotally connects the auxiliary lever 5 and the arm 31, and a tension spring 8 that is connected and disposed between the lever 4 and the arm 31. A cassette holder device consisting of. An engagement shaft 53 protruding from the auxiliary lever 5 fits into a long hole 71 formed in the link plate 7, and the auxiliary lever 5 is connected to a weak spring 81 that biases the presser roller 6 to rotate in the direction of ejecting the cassette. A cassette holder device according to claim 1 of the registered utility model.