JPS5834561Y2 - Pickup arm lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lifting device for a pickup arm of a record player, and more particularly to a lifting device for a pickup arm configured to slowly rise when the pickup arm is raised.

A normal pick-up arm elevating device is configured to perform a dive and descend slowly when descending, but is configured to rise at a speed equal to the operation speed of the elevating lever when ascending.

Therefore, if the lift lever is moved rapidly, the pickup arm may spring up, which is not preferable.

The present invention was developed in view of the above-mentioned points, and aims to move the pickup arm slowly when ascending as well as when descending, thereby preventing bounce-up and the like.

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a pickup arm;
2 is an arm lifter comprising a pressing part 3 for abutting against the pickup arm 1 and moving it up and down, a shaft 4, and a suppressed part 5; 6 is a lift lever; 7 is a suppressed part 5 of the arm lifter 2; A rotary member having a distal end portion 8 to be in contact with and a hole 9 through which the elevating lever 6 passes; 10 is a bearing when the shaft 4 of the arm lifter 2 moves up and down; 11 is a rotating member for attaching the arm lifter 2 in the direction of arrow A; The elastic member 12 is a stop member for locking the tip 13 of the lift lever 6 in the raised position.

As shown in FIG. The button is connected by a spring 16, which is a feature of the present invention.

Next, the operation will be explained.

1 and 2 both show a state in which the pink up arm is in the raised position, but when the lifting lever 6 is rotated in the direction of arrow B around the fulcrum 17 from the illustrated state, the lifting lever The tip 13 of 6 also rotates in the direction of arrow B,
Since the tip 13 presses the locking pin 19 covered with the elastic material 18 of the rotating member 1, the rotating member 7 also rotates in the direction of arrow B as the tip 13 rotates in the direction of arrow B. do.

Therefore, the engagement between the tip 8 of the rotating member 7 and the pressed portion 5 of the arm lifter 2 is released, the arm lifter 2 slowly descends according to the elastic force of the elastic member 11, and the pickup arm 1 also slowly descends. descend.

Therefore, when the pickup arm 1, arm lifter 2, and rotating member 7 are lowered, they are in the state shown by the broken line.

If you want to raise the pink up arm 1, just rotate the lift lever 6 in the direction opposite to the direction of arrow B.

As the lift lever 6 rotates, its tip 13 and the rotating member 7 also rotate in the direction opposite to the direction of arrow B.

When the tip 8 of the rotating member 1 comes into contact with the inclined portion of the suppressed portion 5 of the arm lifter 2, the rotating member 1 momentarily stops rotating, but the tip 13 of the lifting lever 6 continues to rotate. and reach the position shown in Figure 1.

By stopping the rotation of the rotation member 7 and continuing rotation of the lifting lever 6, the torsion spring 16 is biased, and the biasing force of the torsion spring 16 applies rotation force to the rotation member 7 again. The moving member T rotates to the position shown in FIG.

Therefore, the rotational force of the lifting lever 6 is not directly applied to the rotational member 7, but the rotational force delayed by the torsion spring 16 is applied to the rotational member 7, and the rotational force of the rotational member γ and the accompanying rotational force are applied. The arm lifter 2 and the pick arm 1 rise slowly, and it is possible to prevent the pick arm 1 from jumping up or the like.

The stop member 12 holds the tip end 13 of the lifting lever 6 at the first position.
It is provided to hold it in the position shown in the figure, and is made of a leaf spring or the like having elastic force.

If the stop member 12 is not present, the arm lifter 2
Based on the stopped state of the pressed portion 5 and the distal end portion 8 of the rotating member 7, there is a risk that the pickup arm 1 may be lowered undesirably due to the elastic force of the elastic member 110.

However, the action of the stop member 12 prevents the pink-up arm 1 from lowering at an undesired time.

The present invention uses the torsion spring 16 to
This has the advantage that the rising speed of the pickup arm 1 can be reduced.

In particular, since the 1-john spring 16 can be placed in the hole 9 of the rotating member 7, there is no need to make the entire lifting device as large as possible, which is advantageous in terms of space.

Furthermore, since the rotating member 7 is configured to abut against the suppressed portion 5 of the arm lifter 2 rather than directly below the arm lifter 2, the lower end of the shaft 4 of the arm lifter 2 can be effectively used, for example, the shaft It is also possible to connect an auto-return mechanism to the lower end of 4.

As described above, the pick-up arm lifting device according to the present invention is a practical device that has a simple and inexpensive structure and can be expected to operate reliably.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of a pickup arm elevating device according to the present invention, and FIG. 2 is an enlarged view showing the main parts thereof. Explanation of main drawing numbers, 1...Pickup arm, 2...
- Arm lifter, 6... Lifting lever I... Rotating member, 16... Torsion spring.

Claims (1)

[Scope of utility model registration request] The arm lifter has an elevating lever that rotates around a fulcrum, an arm lifter having a bottom surface having an inclined portion, a hole through which the elevating lever passes, and a tip portion that abuts on the bottom surface of the arm lifter, and is used for elevating the arm lifter. a rotating member, and a hole through which the lifting lever passes, the rotating member is disposed in the hole, and one end contacts the lifting lever at a predetermined position;
a torsion spring whose other end is connected to the rotating member; a stop member for holding the tip of the rotating member in the raised position of the arm lifter; and a braking member for gently lowering the arm lifter. A lifting device for the pickup arm.