JPS5853743Y2 - Slide rail holding mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a mechanism for holding a slide rail that has a pickup holder at one end that can replace the pink-up.

In order to minimize the resistance to movement in the sliding direction of this type of slide rail, balls are interposed in V-shaped grooves formed between the opposing surfaces of the fixed rail and the guide rail, and the guide The rail is elastically biased toward the fixed rail.

However, this slide rail holding mechanism has a drawback in that when an external force is applied to it through the slide rail so as to displace the slide rail in a direction other than the sliding direction, the guide rail is largely displaced.

Although this does not occur under normal usage conditions of this mechanism, it becomes noticeable when replacing the pink amplifier, resulting in unnecessary anxiety for ordinary users when performing this work.

The present invention has been devised to eliminate this drawback, and the details of the present invention will be explained below with reference to the drawings showing the embodiments thereof.

The base 1 is supported so as to be rotatable about fulcrums 5 and 6 with respect to angles 3 and 4 provided on the chassis 2,
The amount of rotation is regulated on the one hand by the arm 7 provided on the base abutting against the stylus pressure adjusting flange 8, and on the other hand by abutting on a stopper (not shown).

One of the fulcrums 5 and 9 is made movable in the vertical direction in FIG. 2 by a spring 9, and the parallelism of the base to the chassis can be adjusted.

A slide rail 12 to which a pink-up holder 11 that can replace a pick amplifier 10 is fixed at one end is provided with V-shaped grooves 12a and 12b on the side surface of the row, and the other end of the slide rail 12 has V-shaped grooves 12a and 12b. a mounting bracket 13 for attaching a feed rope (not shown) that drives the
An eccentric cam roller 14 supported by the metal fitting and against which the right side of the rail can collide is provided.

The fixed rail 15 is attached to the base with screws 16a, l6b.
A V-shaped groove 15a is provided on the side surface facing one side of the slide rail.

If the guide rail is 1T, the hole provided in the base 1a>
It is supported by screws 18a and 18b through 1b so as to be able to move slightly relative to the base, and is provided with a V-shaped groove 17a on the side facing the other side of the slide rail.

Balls 21at21b>21c, 21d supported by ball and ball retainers 19°20 between each V-shaped groove between the slide rail and the fixed and guide rail.
and by elastic bodies 22a and 22b inserted between the base and the guide rail, and since the slide rail is supported by the rolling friction of each of the balls, (dIt experiences only extremely small resistance.

The profiteering means 23 are located in each V-shaped groove 12 of the slide rail.
A pair of V-shaped protrusions 23 corresponding to a t 12 b
at23b, and its base 23c is placed on the pink amplifier holder side of the base so that the protrusion does not come into contact with the slide rail when it moves in the sliding direction, and the slide rail does not move in the direction. 2 orthogonal
It is attached so that it can come into contact with it when moving in the direction (arrow direction in FIG. 3).

It is clear that this restricting means can also have the above effect even if it is fixed to the fixed rail.

On the base opposite to the fixing and guide rail,
A stopper 24 is attached to allow movement of the slide rail and the eccentric cam roller 14 attached thereto in the sliding direction and to prevent the ball from falling off.

A screw 25 provided on the right side wall of the base 1 comes into contact with the eccentric cam roller when the slide rail is brought to the right end, thereby adjusting the positional relationship of the pickup with respect to the stylus polishing disk 26. ing.

Further, adjustment of the feed rope driving means (not shown) and the start point on the video disc of the pickup is performed between the mounting bracket to which the feed rope is fixed and the slide rail, but the operation is explained below. Omitted.

Replacing the pink amplifier into the pick amplifier holder is performed by arranging the slide rail at the position shown in the figure.

Pick up the eldest child 27 and put the pink amplifier 10 in its case 2.
8, the pickup is rotated to a predetermined angle of elevation with respect to the pink amplifier holder 11 to replace the pickup, and then the pink amplifier is returned to the illustrated position to complete the work.

At this time, the slide rail 12 tends to receive external force in a direction other than the sliding direction due to the rotation of the pickup and the attachment/detachment operation.

In the middle of the displacement of the slide rail receiving this external force, it collides with the projections 23a, 23b of the restriction means, and further displacement is restricted.

As a result, the displacement of the guide rail can be minimized, and the above-mentioned drawbacks of the conventional mechanism can be solved.

However, when the external force is extremely large, the slide rail tries to rotate about the protrusion, but this is prevented because the stopper 24 comes into contact with the slide rail. Prevent large displacement.

[Brief Description of the Drawings] Figure 1 is a partially cutaway plan view of the mechanism of the present invention, Figure 2 is a side view thereof, Figure 3 is a sectional view taken along line A-A in Figure 2, and Figure 4 is the main part thereof. FIG. 10.°° pick amplifier, 11... pickup holder, 12... slide rail 1... base, 15
...Fixed rail, 17...Guide rail, 23...
- Regulatory measures.

Claims (4)

[Scope of utility model registration request] (1) A slide rail with a pink-up holder that can replace the pink-up at one end and a V-shaped groove on each opposing side is fixed to the base. a fixed rail having a V-shaped groove on a side facing one side of the slide rail; and a guide rail supported by the base and having a V-shaped groove on a side facing the other side of the slide rail. a slide rail holding mechanism in which a ball is interposed between the V-shaped grooves of each rail and the guide rail is elastically biased toward the fixed rail to slidably hold the guide rail; A slide rail holding mechanism comprising means that does not contact the slide rail when the slide rail moves in the sliding direction and restricts movement when the slide rail tries to move in a direction perpendicular to the sliding direction. (2) The regulating means includes a pair of V-shaped protrusions corresponding to each V-shaped groove of the slide rail, and the slide rail according to claim 1 is fixed to a base or a fixed rail. Retention mechanism. (3) The slide rail holding mechanism according to claim 2, wherein the regulating means is arranged on the pickup holder side of the fixed and guide rail. (4) The regulating means includes a pair of V-shaped protrusions corresponding to each V-shaped groove of the slide rail, and is fixed to the base or fixed rail on the big amplifier holder side of the fixed and guide rail; and a stopper that allows movement of the slide rail in the sliding direction and is fixed to a base or fixed rail on the opposite side of the pick amplifier holder side of the fixed and guide rail. Retention mechanism.