JPH0721955B2 - Opening angle control device for open / close lid - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for controlling an opening angle of an opening / closing lid such as a disc storage portion of a CD player.

2. Description of the Related Art An example of a conventional opening angle control device for a lid such as a CD player will be described below with reference to the drawings.

FIG. 4 shows a conventional opening angle control device for an opening / closing lid of a CD player or the like. In FIG. 4, 1 is an opening / closing lid attached to a main body (not shown) about a shaft 2 as a rotation center, 1a is a pin provided on the opening / closing lid 1, and 3 is a pin.
It is a leaf spring that pushes up 1b and is fixed to the main body. 4 is a leaf spring fixed to the main body. Reference numeral 1b is a convex portion provided on the opening / closing lid 1.

The operation of the opening angle restricting device for the opening / closing lid of the CD player or the like configured as described above will be described below.

First, when the opening / closing lid 1 is opened, the locking of the opening / closing lid 1 is released, and the leaf spring 3 pushes up the pin 1a to open the opening / closing lid 1.
Rotates in the opening direction. At the moment when the leaf spring 3 pushes up the pin 1a, the convex portion 1b hits the leaf spring 4, and the opening / closing lid 1 is locked at the position where the leaf spring 3 pushes up the pin 1a.

Problems to be Solved by the Invention However, in the above-mentioned configuration, since the leaf spring 3 of the opening / closing lid 1 stops at the position where the plate spring 3 pushes up the pin 1a completely, the pin 1a must be opened in order to increase the opening angle of the opening / closing lid 1. Extend or push the position where the leaf spring 3 pushes up the pin 1a.
It is necessary to shift it toward the root of.

If the pin 1a is extended and the opening angle of the opening / closing lid 1 is increased, the amount of deflection of the leaf spring 3 increases, and a space for accommodating the increased portion is required. Further, the load applied to the leaf spring 3 and the shaft 2 when the opening angle of the opening / closing lid 1 is 0 increases.

On the other hand, if the position where the leaf spring 3 pushes up the pin 1a is shifted toward the base of the pin 1a to increase the opening angle of the opening / closing lid 1,
It is necessary to increase the space for moving the leaf spring 3 by the amount of the shift. Further, the leaf spring 3 when the opening angle of the opening / closing lid 1 is 0
Also, the load on the shaft 2 increases.

Further, when the leaf spring 3 pushes up the pin 1a completely, the leaf spring 3 must have a spring force to support the opening / closing lid 1.

In view of the above problems, the present invention does not apply a large load to the leaf spring 3, does not increase the amount of deflection of the leaf spring 3, and does not require a force sufficient for the leaf spring 3 to support the opening / closing lid 1. It is intended to provide a device for controlling an opening angle of an opening / closing lid that can increase an opening angle.

Means for Solving the Problems In order to solve the above problems, an opening angle control device for an opening / closing lid according to the present invention has a pin provided on the opening / closing lid and the opening / closing lid, and pushes the pin to rotate inertia on the opening / closing lid. First to give power
Convex portion provided on the opening / closing lid for stopping rotation of the opening / closing lid due to the inertial force and holding the opening / closing lid at a fixed position in a state where the leaf spring and the pin and the first leaf spring are separated from each other. And a second leaf spring having a concave portion for guiding the convex portion.

Effect The present invention can determine the opening angle of the opening / closing lid at the position where the first leaf spring and the pin are separated by the above-described configuration, without increasing the deflection amount of the first leaf spring,
This makes it possible to increase the opening angle of the opening / closing lid without applying a large load to the first leaf spring and without requiring the force for the first leaf spring to support the opening / closing lid.

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

FIG. 1 shows a closed state of an opening angle regulating device for an opening / closing lid of a CD player or the like according to an embodiment of the present invention. In FIG. 1, reference numeral 11 is an opening / closing lid of the disk storage portion, 12 is a shaft which is a rotation center of the opening / closing lid 11, 11a is a pin provided on the opening / closing lid 11, and 13 is a leaf spring for pushing up the pin 11a. It is fixed to the body. Reference numeral 11b is a convex portion provided on the opening / closing lid 11, and 14 is a leaf spring having a concave portion 14a that fits in the convex portion 11b and slopes 14a and 14b, and is fixed to the main body.

The operation of the opening angle regulating device for the opening / closing lid of the CD player or the like configured as described above will be described below with reference to FIGS. 1, 2, and 3.

First, when the opening / closing lid is unlocked by performing an opening operation from the closed state shown in FIG. 1, the leaf spring 13 begins to push the pin 11a, and the opening / closing lid 11 rotates counterclockwise about the shaft 12. start. FIG. 2 shows a state in which the leaf spring 13 pushes the pin 11a completely. In this state, the convex portion 11b is on the slope 14b of the concave portion 14a of the leaf spring 14, and the convex portion 11b is
Receives a counterclockwise moment about the shaft 12, and the opening / closing lid 11 continues to rotate counterclockwise about the shaft 12 by the moment. In the open state of the opening / closing lid shown in FIG. 3, the convex portion 11b abuts both the slopes 14b and 14c, and the moment about the axis 12 received by the opening / closing lid 11 from the leaf spring 14 is zero. Opening / closing lid than the state shown in FIG.
When 11 rotates counterclockwise about the shaft 12, the opening / closing lid 11 receives a clockwise moment about the rotation center 12 due to the slope 14c and the convex portion 11b. As a result, the opening / closing lid 11 is held in the state shown in FIG.

As described above, according to the present embodiment, with the leaf spring 13 and the pin 11a separated from each other, by providing the leaf spring 14 having the convex portion 11b and the concave portion 14a for guiding and holding the convex portion 11b at a constant position, It is possible to increase the opening angle of the opening / closing lid 11 without giving a large load to the leaf spring 13, increasing the amount of deflection of the leaf spring 13, and not requiring the force for the leaf spring 13 to support the opening / closing lid 11. .

EFFECTS OF THE INVENTION As described above, according to the present invention, the opening / closing lid, the pin provided on the opening / closing lid, the first leaf spring that pushes up the pin and applies the rotational inertia force to the opening / closing lid 11, and the pin is the first. In the state where the leaf spring is separated, the rotation of the opening / closing lid 11 due to the inertial force is stopped, and the convex portion provided on the opening / closing lid for holding the opening / closing lid 11 at a fixed position and the concave portion for sucking the convex portion By providing a second leaf spring having a spring, the amount of deflection of the first leaf spring is not increased, a large load is not applied to the first leaf spring, and the force by which the first leaf spring supports the opening / closing lid. The opening angle of the opening / closing lid can be increased without the need for.

[Brief description of drawings]

FIG. 1 is a side view of an opening / closing lid opening angle regulating device according to an embodiment of the present invention in a closed state, and FIGS. 2 and 3 are side views showing an operating state of the cover opening angle regulating device of FIG. FIG. 4 is a side view of a conventional opening angle regulating device for an opening / closing lid. 11 …… Opening / closing lid, 11a …… Convex part, 11b …… Pin, 12 ……
Shaft, 13 ... 1st leaf spring, 14 ... 2nd leaf spring, 14a
...... Concave part, 14b ... Slope, 14c ... Slope.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinya Sugawara 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Masataka Saito, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. An opening / closing lid which is pivotally supported by a main body, rotates, a pin provided on the opening / closing lid, and pushes up the pin to give a rotational inertia force about the shaft to the opening / closing lid. The leaf spring, the cam-shaped convex portion provided near the center of rotation of the opening / closing lid, and the convex portion are guided to the opening / closing lid by the inertial force with the pin and the first leaf spring separated from each other. And a second plate spring having a concave portion for holding the convex portion at a fixed position, and an opening angle regulating device for an opening / closing lid.