JPH08135708A - Motive power relief device - Google Patents

Abstract

PURPOSE: To enable the transmission of a motive power to a relief means and the switching of interception without giving a load to a rotary body, in a motive power relief device for relieving a moving speed when a moving body like a magagine discharge lever, etc., is projected by an energizing force. CONSTITUTION: When a discharge lever 21,which is a moving body, is moved in a X direction against a spring 23, a head shaking arm 34 slidingly contacted by a slide contact part 34e is put in turning movement in a Z direction for the discharge lever 21 and a driven gear 36 is separated from a flywheel 37 which is a relief means. When the discharge lever 21 is energized by the spring 23 and moved in a X direction, the head shaking arm 34 slidingly connected to the dischage lever 21 is put in turning movement in a A direction and the driven gear 36 is meshed with the flywheel 37 and the movent to the X direction of the discharge lever 21 is relived by the rotation of the flywheel 37. The head shaking arm 34 can be put in turning movement surely without the installation of load to the rotary body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the movement of a magazine of a disc changer, or the movement of an ashtray or a door, which is an accessory of a vehicle, when it is moved by receiving a biasing force such as a spring. The present invention relates to a power relieving device capable of relieving speed.

[0002]

2. Description of the Related Art FIG. 7 is a plan view showing a conventional power relieving device, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7 and 8 show a power relieving device provided in the magazine ejecting mechanism of the disc changer. The discharge lever 1 as a moving body is provided so as to be capable of reciprocating in the (a)-(b) directions, and is biased in the (a) direction by a spring 2. A magazine containing a plurality of disks (for example, compact disks) is loaded in the (B) direction. At this time, the leading end of the magazine in the insertion direction hits the bent portion 1a of the ejection lever 1, and the ejection lever 1 is moved in the (b) direction by the force of pushing the magazine by hand, and the magazine is locked at the end of the movement. When the magazine is ejected, the lock is released, and the ejection lever 1 is moved in the direction (a) by the urging force of the spring 2, and the bent portion 1a of the ejection lever 1 is moved.
The magazine is pushed by and is ejected in the (a) direction.

However, since the ejection lever 1 is driven by the spring 2 in the (a) direction with a relatively strong force, the magazine may suddenly protrude in the (a) direction. A power relieving device A is provided to relieve the protrusion speed.
In this power relaxation device A, the substrate 3 such as the mechanism chassis is
The main gear 5 is rotatably supported by the shaft 4.
The main gear 5 is formed by integrally forming a large diameter gear 5a and a small diameter gear 5b, and the small diameter gear 5b meshes with a rack 1b formed on the side of the discharge lever 1. A swing arm 6 is rotatably supported on the shaft 4 of the main gear 5, and a driven gear 8 is rotatably supported on a shaft 7 fixed to the tip of the swing arm 6. The driven gear 8 is a combination of a small diameter gear 8a and a large diameter gear 8b, and the small diameter gear 8a meshes with the large diameter gear 5a of the main gear 5.

As shown in FIG. 7, a flywheel 10 is rotatably supported by a shaft 9 fixed to the substrate 3 as a mitigating means, and a small diameter gear 10a is integrally formed on the lower surface of the flywheel 10. Has been done. This small diameter gear 1
0a faces a position where the large-diameter gear 8b of the driven gear 8 can be meshed. In the power mitigating device A, when the discharge lever 1 moves in the (b) direction against the urging force of the spring 2, the swing arm rotates in the (c) direction, and the large-diameter gear of the driven gear 8 is rotated. 8b is separated from the small diameter gear 10a, and the load of the power reduction device A is hardly applied,
The ejection lever 1 moves in the (B) direction. When the discharge lever 1 moves in the (a) direction by the urging force of the spring 2, the swing arm 6 rotates in the (d) direction and the large diameter gear 8b of the driven gear 8 meshes with the small diameter gear 10a.

Due to the moving force of the discharge lever 1 in the (a) direction, the main gear 5 rotates clockwise, the driven gear 8 further rotates counterclockwise, and the flywheel 10 rotates clockwise. Since the power transmission path from the main gear 5 to the flywheel 10 via the driven gear 8 is a speed increasing gear train, the flywheel 10 rotates at high speed. At this time, the flywheel having a predetermined mass tends to rotate at a constant rotation speed due to the moment of inertia. On the contrary, the power transmission path from the flywheel 10 to the rack 1b of the discharge lever 1 is a reduction gear train. Therefore, the inertial rotation of the flywheel 10 applies a load to the discharge lever 1. Therefore, the ejection lever 1 slowly moves in the direction (a), and the ejection operation of the magazine pushed by the bent portion 1a becomes slow.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Is to apply little load when the discharge lever 1 moves in the (b) direction and to apply a load when the discharge lever 1 moves in the (a) direction to slowly move the discharge lever 1 in the (a) direction. . In order to perform this operation normally, when the ejection lever 1 moves in the (b) direction, the swing arm 6 moves in the (c) direction, and the driven gear 8 is reliably separated from the flywheel 10. Further, when the discharge lever 1 moves in the (a) direction, the swing arm 6 rotates in the (d) direction, and the large-diameter gear 8b of the driven gear 8 causes the flywheel 10 to move.
It is necessary to surely mesh with the small diameter gear 10a.

To this end, the main gear 5 or the driven gear 8
It is necessary to apply a load between the swinging arm 6 and the swinging arm 6 so that the swinging arm 6 can rotate by following the rotation direction of the main gear 5. In the conventional example shown in FIG. 8, a compression spring 11 or a leaf spring is interposed between the head 7a of the shaft 7 and the driven gear 8 to apply a friction load torque from the swing arm 6 to the driven gear 8. As a result, when the main gear 5 rotates, a moving force in the same direction as the rotation direction of the main gear 5 is applied to the driven gear 8 that meshes with the main gear 5, so that the swing arm 6 may be (c) or ( D) The swinging motion is surely performed in the direction. However, in the structure that applies a rotational load to the main gear 5 or the driven gear 8, it is necessary to interpose a compression spring or a leaf spring between the shaft head and the gear as shown in FIG. Increase the number of assembly work steps.

Further, it is necessary to give a proper load torque to the main gear 5 or the driven gear 8 so that the swing arm 6 can be surely rotated in a range not so large. However, it is difficult to set an appropriate load torque with high accuracy by the spring 11 and the leaf springs arranged in a narrow space, and the load torque acting on the main gear 5 and the driven gear 8 becomes excessive and the gear rotation There are problems that the load becomes abnormally high, or sufficient load torque cannot be applied to the main gear 5 and the driven gear 8 and the swing arm 6 cannot reliably follow the rotation direction of the main gear 5. Occurs. If an attempt is made to set the elastic force with high precision using the spring 11 or leaf spring, the spring 11
The axial length and the elastic arm length of the leaf spring must be made long to some extent, which makes it more difficult to make the power relieving device A thinner and smaller.

The present invention solves the above-mentioned problems of the prior art by reliably rotating the swinging arm in accordance with the moving direction of the moving body so that switching of the power easing operation can be reliably performed, and at the minimum. It is an object of the present invention to provide a power reduction device that can be thinned with components.

[0010]

A power relieving device according to the present invention comprises a moving body that reciprocates, an urging member that urges the moving body in one direction, and forward and reverse rotations associated with the reciprocating movement of the moving body. Main rotating body, a swinging arm provided coaxially with the main rotating body, a driven rotating body which is supported by the swinging arm and always rotates together with the main rotating body, and a rotational force is received from the driven rotating body. And a swaying means for easing the rotational speed of the driven rotator when the oscillating arm is in sliding contact with the moving body and when the moving body moves in a direction opposing the urging member When the arm is rotated to move the driven rotating body away from the mitigating means, and when the moving body moves in the biasing direction, the sliding contact causes the swinging arm to rotate in the opposite direction so that the driven rotating body functions as the mitigating means. Characterized by moving to a position that imparts rotational force A.

Further, the movable body is provided with a protrusion for forcibly starting the swinging arm in the direction of the relaxation means when starting to move in the urging direction from the position moved to the terminal end in the direction opposite to the urging member. The structure is preferably provided.

In each of the above means, the swing arm may be formed of a leaf spring, and the swing arm may be provided with an elastic pressure portion which is brought into pressure contact with the main rotating body or the driven rotating body to exert a rotational frictional force. is there.

In the above means, the main rotating body or the driven rotating body is, for example, a gear, and in this case, power is transmitted to the main rotating body from a rack or the like formed on the moving body, and is further relaxed from the driven rotating body. Power is transmitted to the gear portion provided in the means. Alternatively, the power may be transmitted by the contact frictional force between the surfaces of the main rotating body and the driven rotating body.

The mitigating means is, for example, a flywheel. In this case, the power transmission path from the moving body to the main rotating body, from the main rotating body to the driven rotating body, and from the driven rotating body to the mitigating means becomes power or a power accelerating path, and the flywheel is rotated at high speed. Further, the mitigating means may be a rotary damper in which the rotational force is mitigated by the resistance force of liquid such as oil or air.

[0015]

In the above means, when a moving body such as a discharge lever for giving a discharging force to a magazine is moved against a biasing force of a biasing member by a disc changer, a swing arm slidingly contacting the moving body moves. The body is rotated in one direction following the movement of the body, and at this time, the driven rotating body supported by the swing arm is reliably separated from the relaxation means. Therefore,
The load exerted by the relaxation means does not act on the moving body, and the moving body can be moved in a state in which the moving body receives only the biasing force of the biasing member. Next, when the moving body moves in the urging direction of the urging member, the swing arm slidingly contacting the moving body follows the movement of the moving body and rotates in the opposite direction to the above, and is driven by this turning force. Power is surely given to the relaxation means from the rotating body. At this time, the moving body receives the load of the relaxation means, and the moving body can move slowly.

Further, when the movable body is provided with the projecting body, the movable body starts to move in the urging direction of the urging member from a state in which the movable body is located at the end of the urging force of the urging member. At this time, the protrusion pushes the swing arm, and the swing arm is reliably rotated, and the driven rotating body is moved to a position where power is applied to the relaxation means. Therefore, the operation of the relaxation means is immediately started at the time of switching when the moving body starts moving in the biasing direction of the biasing member.

Next, if the swing arm is formed of a leaf spring, and the elastic portion provided on the leaf spring applies a rotational frictional force to the main rotating body or the driven rotating body, the swinging movement of the swing arm is performed. Will be carried out more reliably.
However, the application of the rotational frictional force by the elastic portion is only for giving a turning force as an auxiliary to the swinging arm which is in sliding contact with the moving body and rotates. Therefore, as compared with the conventional example shown in FIG. 8 in which the swing arm is rotated only by the rotational frictional force applied to the rotating body, it is not necessary to set the rotating load with high accuracy, and any elastic member from the elastic portion is required. The rotational frictional force applied to the motor may be minute.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a part of a disc changer provided with a power relaxation device according to the present invention, FIG. 2 is an exploded perspective view showing the structure of the power relaxation device, and FIG. 3 is a plan view showing the operation of the power relaxation device. 4 is a sectional view taken along line IV-IV in FIG. As shown in FIG. 1, a magazine loading section B is opened in the mechanism chassis 20 of the disc changer, and a magazine M is loaded in the magazine loading section B. This magazine M has a plurality of discs D stored therein, and a disc entrance Ma is opened on the right side surface thereof.

The right part of the mechanism chassis 20 in the figure is a disk drive section E. The disk drive unit E is provided with a disk drive unit that moves up and down. When a desired disc is selected while the magazine M is loaded in the magazine loading unit B, the drive unit moves up and down in the disc drive unit E to select one of the discs D in the magazine M. It When the drive unit stops at a position for selecting one of the discs, the disc (for example, a compact disc having a diameter of 12 cm) D is read from the magazine M.
The disk is pulled out from the disk and held in the drive unit, the disk is rotationally driven, and the reproducing operation is performed by the optical head.
Inside the ceiling surface of the mechanism chassis 20, a discharge lever 21 is provided as an example of a moving body that moves in the (a)-(b) directions along the loading and discharging directions of the magazine M.

A guide piece 21a bent upward is integrally formed at one end of the discharge lever 21, and a guide shaft 22 is fixed to the upper surface of the discharge lever 21.
On the ceiling surface of the mechanism chassis 20, elongated guide holes 20a and 20b extending in the (a)-(b) directions are formed. The guide piece 21a is slidably inserted in the guide elongated hole 20a, the guide shaft 22 is slidably inserted in the guide elongated hole 20b, and the discharge lever 21 is slidably supported on the ceiling surface. . Further, a bent portion 21b bent downward is integrally provided at the tip of the discharge lever 21 in the (B) direction. The discharge lever 21 has a spring hook 21c extending laterally.
Are integrally formed, and a spring hook portion 20c is formed on the ceiling surface of the mechanism chassis 20. A pair of tension springs 23, 23 are hooked on the spring hooks 21c and the spring hooks 20c as biasing members, and the elastic force of the springs 23, 23 keeps the ejection lever 21 always (a).
Biased in the direction.

When the magazine M is loaded in the (B) direction to the magazine loading section B, the insertion direction tip Mb of the magazine M hits the bent portion 21b. When the magazine M is pushed as it is in the (B) direction, the ejection lever 21 moves in the (A) direction together with the magazine M against the biasing force of the springs 23, 23. In the magazine loading section B, a lock member 24 is provided on the bottom surface of the mechanism chassis 20, and the lock member 24 is biased toward the ceiling by the biasing force of the compression spring 25. When the magazine M is pushed to the end in the (b) direction, the lock member 24 fits into the lock groove formed on the bottom surface of the magazine M, and the magazine M is locked in the loaded state. The urging force of the springs 23 is always applied to the locked magazine M by the bent portion 21b of the ejection lever 21.

When the lock member 24 is pulled toward the bottom side of the mechanism chassis 20 by a lock release mechanism (not shown), the lock of the magazine M by the lock member 24 is released. At this time, the ejection lever 21 is moved in the (a) direction by the urging force of the springs 23, 23, and the magazine M is pushed out in the (a) direction and ejected by the bent portion 21b. In this embodiment, the urging force of the springs 23, 23 relaxes the power of the discharge lever 21 that is a moving body when it moves in the (a) direction, and reduces the moving speed of the discharge lever 21 in the (a) direction. A power relieving device F is provided for this purpose.

The power relieving device F includes a substrate 30 made of a metal plate.
Is provided. The planar shape of the substrate 30 is substantially the same as the shape of the cutout portion 20d formed in the ceiling plate of the mechanism chassis 20. The fixing pieces 30 are provided on both ends of the substrate 30.
A and 30b are integrally formed by bending. Board 30
However, when it is installed in the cutout portion 20d, the fixing pieces 30a and 30b contact the ceiling surface of the mechanism chassis 20. Then, the fixing screws 31 and 31 are inserted into the screw holes 30c and 30d formed in the fixing pieces 30a and 30b, and the fixing screws 31 and 31 are inserted into the female screw holes 20e and 20f formed on the ceiling surface of the mechanism chassis 20. It is screwed, and thus the substrate 3
0 is fixed to the mechanism chassis 20.

A lower end of a shaft 32 is fixed to the substrate 30. A main gear 33 as a main rotating body is rotatably inserted in the shaft 32. The main gear 33 is a large diameter gear 33a.
And the small diameter gear 33b are integrally formed. A swing arm 34 made of a leaf spring material is inserted through the shaft 32. That is, the shaft 32 has the main gear 33
Is inserted in the center hole 33c of the
Is inserted in the support hole 34a of the
It is fixed by caulking in the fixing hole 30e. Therefore, the swing arm 34 can rotate (swing motion) coaxially with the main gear 33.

A shaft 35 is fixed to the swing arm 34,
A driven gear 36 as a driven rotating body is rotatably supported on the shaft 35. The driven gear 36 is formed by integrally forming a small diameter gear 36a and a large diameter gear 36b. Axis 35
Is inserted into the center hole 36c of the driven gear 36, and is caulked and fixed in the fixing hole 34b of the swing arm 34. Further, a shaft 35 slightly protruding to the lower surface side of the swing arm 34
The front end portion of is located in the escape hole 30f formed in the substrate 30. As shown in FIGS. 1 and 3, the small diameter gear 36a of the driven gear 36 is always meshed with the large diameter gear 33a of the main gear 33.

A restriction hole 34c is formed in the swing arm 34, and a stopper projection 3 is formed on the upper surface of the substrate 30 so as to project.
0 g is inserted in the regulation hole 34c. The swing arm 34 is rotatable about the shaft 32, but the swing range thereof is limited to the relative movement range of the stopper protrusion 30g and the restriction hole 34c, which allows the swing arm 34 to move in the (c) direction. It is prevented from rotating at an excessive angle in the (d) direction. While the swinging arm 34 rotates in this range, the small-diameter gear 36a of the driven gear 36 makes a planetary motion about the shaft 32 while always meshing with the large-diameter gear 33a of the main gear 33.

A flywheel 37 is provided on the substrate 30 as an example of a relaxation means. Flywheel 37
Is a disc-shaped member made of metal such as brass, and a small-diameter gear 37a is integrally formed on the lower surface thereof. The shaft 38 is inserted into the center hole 37b of the flyhole 37, and the tip of the shaft is caulked and fixed in the fixing hole 30h of the substrate 30. The flywheel 37 is supported so as to be freely rotatable with respect to the shaft 38. Flywheel 3
The small diameter gear 37a of No. 7 is the large diameter gear 36b of the driven gear 36.
When the swing arm 34 rotates in the (d) direction, the large-diameter gear 36b meshes with the small-diameter gear 37a, and the rotational power of the driven gear 36 is rotated by the flywheel 37. Be transmitted to.

As shown in FIG. 2, a rack 21d is formed on the left side of the discharge lever 21 as a moving body. With the substrate 30 of the power reduction device F fixed to the ceiling plate of the mechanism chassis 20, the small-diameter gear 33 of the main gear 33 is provided.
b is engaged with the rack 21d. Further, a protrusion 21e formed by cutting and raising in the lower surface direction is provided in a portion inside the rack 21d of the discharge lever 21 and near an end portion on the (a) side. This protrusion 21e
Is inclined downward in the direction (a), and as shown in FIG. 4, the (b) side of the protrusion 21e is an inclined surface 21g.

The swing arm 34 is made of a leaf spring material.
An elastic arm 34d that extends to the lower surface of the ejection lever 21 is provided, and a sliding contact portion 34e that projects upward is provided at the tip of the elastic arm 34d. Rack 2 of discharge lever 21
The lower surface of the inner portion of 1d is a sliding contact surface 21f, and the sliding contact portion 34e is elastically pressed to the sliding contact surface 21f by a predetermined pressure by the elastic force of the elastic arm 34d. Discharge lever 2
When 1 moves in the (a)-(b) direction, the sliding contact portion 34
e will slide on the sliding contact surface 21f.
1e is located on the sliding path of the sliding contact portion 34e on the sliding contact surface 21f.

Next, the loading and unloading operations of the magazine M using the above-mentioned power relaxation device F will be described. When the magazine M is inserted into the magazine loading section B in the (B) direction, the insertion direction tip Mb of the magazine M hits the bent section 21b. When the magazine M is pushed in the (B) direction as it is, the ejection lever 21 moves in the (B) direction together with the magazine M. The sliding contact surface 21f on the lower surface of the discharge lever 21 is
Sliding contact part 3 formed on the elastic arm 34d of the swing arm 34
4e is elastically pressed, and the sliding contact portion 34e slides on the discharge lever 21 moving in the (b) direction.
The swinging arm 34 rotates in the (C) direction following the movement in the (B) direction. Therefore, the large diameter gear 36b of the driven gear 36 supported by the swing arm 34 separates from the small diameter gear 37a of the flywheel 37 (state of FIG. 3).

When the discharge lever 21 moves in the (b) direction, the main gear 33 is driven counterclockwise by the engagement of the rack 21d and the small diameter gear 33b, and this rotational force is generated by the large diameter gear 33a and the small diameter gear 33a. It is transmitted to the driven gear 36 by meshing with 36a, and the driven gear 36 is driven in the clockwise direction. However, since the large diameter gear 36b is separated from the small diameter gear 37a, the rotational power of the driven gear 36 is not transmitted to the flywheel 37. Flywheel 3 as a mitigation means
Since 7 does not operate, almost no rotational load acts on the main gear 33 and the driven gear 36, and therefore, when the discharge lever 21 meshing with the rack 21d moves in the (b) direction, the load by the mitigating means is reduced. Does not work. Therefore, the ejection lever 21 can be moved in the (B) direction by the resistance force of only the biasing force of the springs 23, 23, and the magazine M
The resistance to pushing by hand does not become excessive.

When the magazine M is inserted at the end in the (b) direction, the magazine M is locked by the lock member 24. At this time, the discharge lever 21 also moves to the end in the (b) direction. As shown in FIG. 4, the sliding contact surface 21f of the discharge lever 21
The protrusion 21e is located above. Therefore, the sliding contact portion 34e
Just before the discharge lever 21 moves to the end in the (b) direction by sliding on the sliding contact surface 21f, the inclined surface 21g of the projection 21e rides over the sliding contact portion 34e, and the magazine M locks the locking member 24.
The protrusion 21e is located on the (b) side of the sliding contact portion 34e in the state of being locked by. 3 and 4, the position of the protrusion 21e at this time is indicated by (e). Next, when the ejection operation button of the magazine M is pressed, the lock member 24 is locked by the lock release mechanism (not shown).
Is retracted downward from the bottom surface of the magazine M, the lock member 24 is disengaged from the bottom surface of the magazine M, and the lock of the magazine M is released.

At the same time as unlocking, the springs 23, 2
The urging force of 3 causes the discharge lever 21 to start moving in the (a) direction. Immediately after starting to move, in Fig. 3 and Fig. 4 (e)
The protrusion 21e located at the position pushes the sliding contact portion 34e, and the swing arm 34 is forcibly rotated in the (d) direction.
Therefore, the large-diameter gear 36b of the driven gear 36 immediately meshes with the small-diameter gear 37a integrated with the flywheel 37. During the subsequent movement of the ejection lever 21 in the (a) direction, the sliding contact portion 34e keeps sliding contact with the sliding contact surface 21f of the ejection lever 21 moving in the (a) direction. Due to the sliding contact, the swing arm 34 always receives the urging force in the (d) direction, and the large diameter gear 36b of the driven gear 36 is changed to the small diameter gear 37 while the discharge lever 21 moves in the (a) direction.
Continue to engage a.

Further, the moving force of the discharge lever 21 in the (a) direction is given from the rack 21d to the small diameter gear 33b of the main gear 33 to rotate the main gear 33 in the clockwise direction. The driven gear 36 is transmitted from 33a to the small diameter gear 36a to rotate counterclockwise. Further driven gear 3
The rotational force of the large diameter gear 36b of No. 6 is given to the small diameter gear 37a, and the flywheel 37 rotates clockwise. Power transmission from the main gear 33 to the driven gear 36, and the driven gear 3
Since the power transmission from 6 to the flywheel 37 is performed by the speed increasing gear train, the flywheel 37 rotates at a high speed and the flywheel 37 tries to rotate at a constant speed due to the inertial force (inertia moment). . Since the deceleration transmission path is from the flywheel side to the main gear 33, the high-speed constant rotation of the flywheel 37 becomes a rotational load of the main gear 33, so that the moving speed of the discharge lever 21 in the (a) direction decreases. . Therefore, the magazine M is slowly pushed out in the (a) direction.

In this embodiment, the sliding contact portion 34e provided on the swinging arm 34 keeps slidingly contacting the sliding contact surface 21f, so that the swinging arm 34 is reliably rotated in the (c) direction or the (d) direction. It is supposed to move. When the discharge lever 21 starts to move in the direction (a), the protrusion 21e
Presses the sliding contact portion 34e, and the flywheel 37, which is a mitigating means, can be immediately started at the time of starting in the direction (a). By providing the protrusion 21e in this way,
The drive of the mitigating means can be switched immediately and reliably when moving in the direction (a), but in the present invention, the protrusion 21
e may not be provided. If the projecting body 21e is not provided, when the discharge lever 21 starts to move in the (a) direction, the swinging of the swing arm 34 in the (d) direction may be slightly delayed. 21 is (a)
The sliding arm 34e and the sliding contact surface 21f are slidably contacted with each other, so that the swing arm 34 can be reliably rotated in the (d) direction while moving in a certain direction.

Next, FIG. 5 shows a power easing device F1 in which a means for applying a rotational friction torque to the driven gear 36 is added to the above embodiment. FIG. 5 is an exploded perspective view of the power reduction device F1, and FIG. 6 is a sectional view thereof. In this power alleviation device F1, the swing arm 3 made of a leaf spring material is used.
4 is provided with an elastic portion 34f cut and raised in the upper surface direction, and as shown in FIG.
The underside of the is being oppressed. A frictional load torque is applied from the swing arm 34 to the driven gear 36 by the elastic pressure of the elastic portion 34f.

Therefore, when the main gear 33 rotates counterclockwise, the driven gear 36 meshed with the main gear 33.
Moves in the rotational direction of the main gear 33, and the swing arm 34 easily rotates in the (c) direction. Similarly, when the main gear 33 rotates in the clockwise direction, the swing arm 34 (d) moves. It becomes easy to rotate in the direction.

As shown in FIGS. 5 and 6, the sliding arm 34e and the sliding contact surface 21f of the discharge lever 21 cause the swing arm 34 to move in the (c) direction or (d) in the same manner as in the above embodiment. ) Direction is urged to rotate. Therefore,
The structure for applying the friction load torque to the driven gear 36 by the elastic portion 34f additionally assists the swinging movement of the swinging arm 34 by the sliding contact of the sliding contact portion 34e. Therefore, as compared with the conventional example shown in FIGS. 7 and 8 in which the swing arm is rotated only by the friction load torque applied to the driven rotor, the friction load torque applied to the driven gear 36 by the elastic portion 34f is reduced. High accuracy is not required. Therefore, it is preferable to minimize the frictional load torque applied to the driven gear 36 by the elastic portion 34f. Even if the friction load torque by the elastic portion 34f is small, it is possible to assist the driving of the swing arm 34 based on the sliding contact of the sliding contact portion 34e, and by reducing the friction load torque, It is possible to prevent an increase in load when pushing in the () direction.

A frictional load torque may be applied to the main gear 33 by the elastic portion 34f formed by cutting and raising the swing arm 34. Also in this case, when the main gear 33 rotates, the swing arm 34 easily follows this rotation and rotates. As an embodiment of the present invention, the protrusion 21e and the elastic portion 34f may not be provided as described above, and only the sliding arm 34e may be provided on the swing arm 34, or the sliding contact 34e may be provided. The protrusion 21e may be provided. Further, the sliding contact portion 34e and the elastic portion 34f may be used together without providing the protrusion 21e. Alternatively, the sliding contact portion 34e, the protrusion 21e, and the elastic portion 34f may all be provided.

Further, the main rotating body and the passive rotating body may be capable of transmitting power by pressure contact between the rubber layers on the outer circumference. Further, the mitigating means is not limited to the flywheel, but the one that reduces the power and speed by rotating the fin in a highly viscous fluid such as silicon oil, or has a fin that rotates in the air to reduce the power and speed. It may be alleviated.

Further, the power alleviation device of the present invention is not limited to being provided in the drive portion of the ejection lever 21 of the disc changer as in the illustrated embodiment. For example, speed reduction when an ashtray that is an automobile accessory is projected, speed reduction when other doors are opened, speed reduction when the lid member on the surface of in-vehicle electronic devices and household VTRs is opened, and other devices in general Can be used for. Further, the moving body is not limited to the one that reciprocates linearly, but it rotates about one end as a fulcrum, and for example, it gives power to the main gear (main rotating body) from the rack along this rotation locus. It may be.

[0042]

As described above, according to the present invention, the swing arm is brought into sliding contact with the moving body, and the swing arm is operated by the sliding contact of the moving body. Therefore, even if the rotational load torque is not applied to the main rotating body and the driven rotating body, the transmission and the cutoff of the power to the mitigating means can be switched. Therefore, the additional rotation of the rotating body does not increase, and the structure can be made thin.

Further, the movable body is provided with a projecting body, and when the moving body is started in the urging direction, the swinging arm is forcibly rotated by the projecting body so that the easing means is immediately activated at the time of starting the moving body. Can be started.

Further, when the load torque is applied to the main rotating body or the driven rotating body by utilizing the swing arm, the swing arm can swing more reliably.

[Brief description of drawings]

FIG. 1 is a perspective view showing a magazine loading portion of a disc changer equipped with a power reduction device of the present invention,

FIG. 2 is an exploded perspective view showing the structure of the power relieving device shown in FIG.

FIG. 3 is a plan view showing the operation of the power relieving device,

4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is an exploded perspective view showing a power relieving device that also uses a means for applying a friction load torque to a rotating body.

6 is a sectional view of FIG.

FIG. 7 is a plan view showing a conventional power relaxation device,

8 is a sectional view taken along line VIII-VIII in FIG.

[Explanation of symbols]

 D disk F, F1 power relaxation device M magazine 20 mechanism chassis 21 discharge lever 21b bent portion 21d rack 21e projecting body 21f sliding contact surface 23 spring as biasing member 30 base plate 33 main gear (main rotating body) 34 swing arm 34e Sliding contact part 34f Elastic part 36 Driven gear (driven rotating body) 37 Flywheel (relaxation means)

Claims (3)

[Claims] 1. A reciprocating moving body, an urging member for urging the moving body in one direction, a main rotating body that rotates forward and backward in accordance with the reciprocating movement of the moving body, and a coaxial with the main rotating body. A swinging arm provided, a driven rotating body which is supported by the swinging arm and always rotates together with the main rotating body, and a relaxation which moderates the rotational speed of the driven rotating body when a rotational force is received from the driven rotating body. Means, the swing arm is in sliding contact with the moving body, and when the moving body moves in a direction opposing the biasing member, the swing arm rotates the swinging arm to alleviate the driven rotating body. When the moving body moves away from the means in the urging direction, the swinging arm causes the swinging arm to rotate in the opposite direction by the sliding contact, and the driven rotating body moves to a position that applies a rotational force to the alleviating means. Power relaxation device. 2. The projecting body for forcibly starting the swinging arm in the direction of the relaxation means when the moving body starts moving in the biasing direction from the position moved to the terminal end in the direction opposite to the biasing member. The power mitigation device according to claim 1, further comprising: 3. The swing arm is formed of a leaf spring,
The power relieving device according to claim 1 or 2, wherein the swing arm is provided with an elastic pressure portion that is brought into pressure contact with the main rotating body or the driven rotating body to exert a rotational frictional force.