JP2553875Y2 - Disc clamp device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable disk player, and more particularly to a disk clamp device.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional disk clamping device has three balls 13 built in a frustum-shaped guide member 12 provided at the center of a turntable 11, and The elastic member 14 urges the balls 13 in the direction in which the balls 13 protrude from the three holes 12b provided equally (120 ° at equal intervals) in the tapered portion 12a.

When the disc 15 is mounted on the turntable 11 of the disc clamp device constructed as described above while pushing the disc 15 by hand, the disc 15 is moved to the three peripheral portions of the center hole 15a by three.
It was pressed and clamped by the balls 13.

[0004] When removing the disk 15, the disk
The outer periphery of 15 was grasped and forcibly removed.

However, in the above-described conventional disk clamp device, since the clamped disk is forcibly removed, care must be taken not to damage the disk, and the operability is very poor. The present invention has been made in view of the above points, and has as its object to provide a disk clamp device which can eliminate the drawbacks of the conventional example and can be easily removed with one touch.

[0005]

According to the disk clamp device of the present invention, a plurality of balls are built in a frusto-conical guide member projecting from the center of a turntable, and a tapered portion of the guide member is provided. In a disk clamp device for urging each ball with a resilient member in a direction in which the ball protrudes from a plurality of equally arranged holes and clamping the disc with the ball, the disc clamp device is provided with a resilient member and projects to the center. A disk clamp device comprising a clamper frame formed by a plurality of arms extending radially from a base end of the finger pusher, a guide member, and a turntable, the guide member comprising: The finger pressing part of the clamp frame protruding from the hole provided in the center of the table, the concave part provided in the center of the tongue table, and the disc placed on the side of this concave part A square hole which is provided over the table portion of the turntable that, an arm which is loosely fitted in the square hole,
An elastic piece provided near the base end of the arm so as to press the ball and urge it toward the hole, and a protrusion provided as a fulcrum for turning the arm when the operating portion at the tip of the arm is pressed. ,
When the disc is mounted on the turntable with the operating portion of the arm protruding from the square hole of the table portion, the operating portion is pushed down, the arm rotates, and the urging force of the ball increases.

[0006]

According to the invention, when the disc is mounted on the turntable, the operating portion is pushed down by the disc. As a result, the arm pivots about the protrusion, so that the elastic piece strongly presses the ball, and the urging force of the ball increases. The protruding part of the ball
Press and clamp with multiple balls.

[0007] When removing the disk, the finger pressing portion is pressed from above to rotate the arm. As a result, the elastic piece also rotates in the same direction, and the pressing force of the ball becomes very weak, and at the same time, the operating portion pushes up the disk from below.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk clamp device according to the present invention will be described with reference to FIGS. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 1, reference numeral 1 denotes a turntable on which a disk 15 is mounted and rotated, 1a denotes a table portion on which the disk 14 is mounted, and 1b denotes a recess provided at the center of the turntable 1. Reference numeral 1c denotes three square holes provided in three equal parts so that the arms can be loosely fitted from the side surface of the concave portion 1b to the table portion of the turntable on which the disk is placed. Reference numeral 2 denotes a clamper frame which is provided by an elastic member, has a finger pressing portion projecting from the center, and is formed by three arms extending radially from the base end of the finger pressing portion. 2a is a finger pressing portion protruding from the center of the clamper frame 2, 2b is three arms extending radially (equally 120 degrees) from the base end of the finger pressing portion, and 2c is a tip flat portion of the arm 2b. An operating part against which the disc comes in contact, 2d is an elastic piece provided integrally with the arm 2b so as to urge the ball in a direction protruding from the hole of the guide member near the base end of the arm 2b, and 2e is provided integrally with the arm 2b A projection that serves as a pivot point of the arm 2b when the operating part 2c or the finger pressing part 2a is pressed,
Reference numeral 3 denotes a guide member fixed to the turntable 1 with screws (not shown) and inserted into the center hole 15a of the disk 15 to guide the disk 15 to a predetermined position. Reference numeral 3a denotes a tapered surface for guiding the disk 15 to the center. It is a hole smaller than three equally provided balls.

In the disk clamp device of the present invention thus configured, the center hole 15 of the disk 15 is
a so that the guide member 3 enters the
Lightly by hand, the square hole in the table 1a
The three operating portions 2c projecting from 1c abut against the disk 15 and are pushed down, and are held at the same height as the table portion 1a.

As a result, the three arms 2b rotate around the protrusion 2e as a fulcrum, and the three elastic pieces 2d strongly press the ball 13, respectively. At this time, the finger pressing portion 2a rises and comes to the point P.

The three balls 13 pressed by the elastic pieces 2d and projecting from the holes 3b press the three peripheral portions of the center hole 15a provided in the disk 15 to clamp the disk 15.

When removing the disk 15, the finger pressing portion 2a is pressed from above. This causes the arm 2b to pivot about the protrusion 2e. Therefore, the elastic piece 2d also rotates, and the pressing force of the ball 13 becomes very weak. At the same time, the operating portion 2c pushes the disk 15 from below, so that the disk 15 floats up and can be easily taken out.

[0014]

According to the disk clamp device of the present invention, since the disk clamp device is constructed as described above, the disk can be easily removed with one touch, and the operability is greatly improved.

In addition, it has excellent features such as simple structure and easy implementation because it can be constructed at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disk clamp device of the present invention.

FIG. 2 is a front sectional view of a main part showing the device.

FIG. 3 is a front sectional view of a main part showing a state where the disk is clamped by the same device.

FIG. 4 is a front sectional view of a main part showing a conventional disk clamp device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turntable 1a Table part 1b Depression 1c Square hole 2 Clamper frame 2a Finger pressing part 2b Arm 2c Working part 2d Elastic piece 3 Guide member 3a Tapered surface 3b hole 13 Ball 15 Disc 15a Center hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of balls are built in a frusto-conical guide member protrudingly provided at a center portion of a turntable, and a plurality of holes are provided evenly in a tapered portion of the guide member. In a disc clamping device for urging each ball by an elastic member in a direction in which the ball protrudes and clamping the disc by the ball, a finger pressing portion provided by the elastic member and protruding from the center is provided. A clamp member formed by a plurality of arms extending radially from a base end of a portion, a guide member, and a turntable, wherein the clamp projects from a hole provided in a central portion of the guide member. A finger pressing portion of the frame, a concave portion provided in the center of the tongue table, and a square hole provided from a side surface of the concave portion to a table portion of the turntable on which the disc is mounted. , An arm loosely fitted in the square hole,
An elastic piece provided near the base end of the arm so as to press the ball and urge it toward the hole, and a protrusion provided as a fulcrum for turning the arm when the operating portion at the tip of the arm is pressed. ,
A disc clamping device characterized in that when a disc is mounted on a turntable with an operating portion protruding from a square hole of a table portion, the operating portion is pushed down, the arm is rotated, and the urging force of the ball is increased.