JPH0422086B2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention provides a storage section at a high place, such as a cabinet or a side wall of a room, and a lever is lowered from a low position with respect to the storage section. The arm can be folded forward and rotated back to an upright position, allowing coats, clothes, etc. to be hung on and removed from a hanger bar installed at the upper end of the arm. Regarding the so-called lift coat hanger that has been made possible.

<<Prior Art>> As is known, conventional lift coat hangers are of a direct drive type in which a torsion spring is used to directly drive an arm to rotate by the tension of the torsion spring.

≪Problem to be solved by the invention≫ However, in the case of conventional lift coat hangers, the arm changes from the closed position (storage position), which is in a high position with the arm upright, to the open position, which is a low position with the arm tilted forward. When rotating and descending, the arm torque increases as the arm descends, so
When rotating and lowering the arm, if the maximum load (a large number of clothes) is applied, the arm may fall suddenly, or when rotating and rising from the open position to the closed position, the arm may fall under the minimum load (a small number of clothes). If only clothing (clothing) is present, the arm will rise rapidly and pose a danger.

Therefore, in order to correct the dangers caused by the above-mentioned operation, complicated mechanisms such as stoppers and rotation control mechanisms must be separately installed, but this not only makes the installation work to the cabinet etc. troublesome, but also If the mechanism is mounted on the main body side, there are problems such as poor appearance.

The present invention has been made in view of the above-mentioned problems of the prior art, and it connects a damper unit via a one-way clutch to a rotary shaft provided to rotate as the arm rotates downward and upward. , by interlocking and connecting a spring clutch that can keep the rotating shaft in a locked state where it does not rotate to the left or right at all times, and a switch unit that can lock and unlock the spring clutch, In addition to being able to lock and hold the arm in the closed and open positions, it also acts as a free stop mechanism, making it possible to hold the arm at any stop angle, and in the open position, the arm is locked. In conjunction with the release, a damper effect (braking force) works to gently stop the arm from rotating from the open position to the closed position, so that this state can be locked, and all mechanisms are built into the arm. The purpose is to provide an excellent external appearance and also to facilitate installation in a cabinet or the like.

<<Means for Solving the Problems>> In order to achieve the above object, the present invention provides a main body in which the lower end of a hollow arm having a hanger bar and a lever for rotational operation at the upper end is rotatably supported on a base. A power unit is fixed to the arm and is formed to apply a return force for rotation up to the arm, and the base is interlocked with the gear rotation mechanism, so that the arm can be rotated forward and backward by lowering and increasing rotation of the arm. A torsion spring is wound around a rotating shaft supported within the arm, a rotating hub integrated with the rotating shaft, and a rotatable fixed hub, and the rotating shaft is supported by the torsion spring. A one-way clutch is formed to be rotatable in the opposite direction to the winding direction and lockable in the winding direction, and a detent is fixed to the unit pipe fixed in the arm. An adjusting cylinder and a movable cylinder are arranged between an adjusting bolt mounted on the rotary shaft and the unit pipe so as to be adjustable in rotation and movement in the axial direction, and the lower end of the movable cylinder is fixed to the fixed hub of the one-way clutch. a damper unit formed by sealing a high viscosity liquid between the movable cylinder, the unit pipe, and the adjustment cylinder, a rotary hub to which the rotary shaft is fixed, and a rotary hub into which the rotary hub is rotatably fitted. One torsion spring is wound symmetrically around a pair of upper and lower fixed hubs, and one end of each is hooked to each fixed hub, so that the rotation axis is normally rotated both left and right. A spring clutch is formed to be able to lock the spring clutch, and a locking switch is fitted onto the spring clutch so as to be slidable in the axial direction and is engaged in a switch groove so that each lock release pawl can be controlled. To provide a lift coat hanger, comprising a return spring provided therein, and a switch unit which is capable of reciprocating in the axial direction by means of a return spring provided therein, and a switch unit which is formed to be capable of being held at a predetermined movement position by a cam mechanism. That is.

≪Operation≫ When the arm is in the upright state and closed, the locking switch is pushed back upwards as shown in Figure 7a by the force of the return spring, and the switch groove allows the spring clutch to be raised by the torsion spring. has been moved in the opposite direction to the winding direction, and the lifting lock has been released.

Here, releasing the upper lock means that the rotating shaft can be rotated in a direction that allows the arm to rotate upward, and releasing the lower lock refers to a state in which the rotating shaft can be rotated in a direction that allows the arm to rotate downward. It is in a rotatable state.

Therefore, the torsion spring of the power unit returns the arm in the direction of rotation and upward movement (the direction of retraction), and at the same time, a damper effect acts through the one-way clutch and gear rotation mechanism in the direction of rotation and upward movement of the arm.

When the lever is pulled diagonally forward in the above-mentioned closed position as shown in Fig. 9, the locking switch is pushed down as shown in Fig. 7b while compressing the return spring, and the switch groove causes the lower lock release pawl to move in the circumferential direction. , and only the lower lock is released.

At this time, the raising lock release claw returns to its original position on the axis and becomes a raising lock, and the rotating shaft can rotate only in the direction of rotating the arm downward.

Therefore, when the lever is pulled further, the arm rotates downward, and at this time, the one-way clutch does not provide a damper effect.

Further, pull the lever and rotate and lower the arm to a desired angle. When the arm reaches the position shown in Fig. 10, the locking switch is no longer pressed down by the arm due to the angle between the arm and the lever. Although the locking switch is pushed back upward by the force of the return spring, the locking switch is only pushed back to the halfway position shown in FIG. 7c by the cam mechanism of the switch unit.

At this time, both the upper and lower lock release claws are held on the axis without being moved, so both the upper and lower locks are working, and the rotation axis is locked both clockwise and counterclockwise, so the arm can be rotated either upward or downward. The arm is not rotated in any direction, and the arm is stopped and locked in the forward-folded open position.

When the lever is further pulled forward from this state as shown in Fig. 11, the locking switch is pushed down slightly by the lever and the cam mechanism of the switch unit is released (the state shown in Fig. 7d), so that the pulling force of the lever is reduced. When released, the lock switch is pushed back to the position shown in Figure 7a by the force of the return spring, and only the up lock is released.

Therefore, the arm is rotated upward by the return force stored in the torsion spring in the power unit, rotates to the open position in an upright state, and then stops.

At this time, the rotational force of the rotating shaft is transmitted to the movable cylinder of the damper unit via the one-way clutch.
The braking force due to viscous resistance works, and the arm slowly and quietly rotates up to the closed position and stops.
The lowering rotation is locked by releasing the upper lock.

<<Example>> Hereinafter, an example of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 11, the arm 1 is formed in a substantially dogleg shape on its side, and has a
A hanger bar 2 made of pipes or rods for suspending hangers (not shown) is installed horizontally, and a lever 3 for rotating the arm 1 in both up and down directions is used to rotate the arm 1 in the front-back direction. It is installed vertically to allow for

The lower end of the arm 1 is fitted into a connecting pipe 5 of a rotatable main body 4 of the power unit A via a fixing tube 6, which is fixed with a set screw 7.

The power unit A is constructed as follows.

The main body 4 is mounted on a base 8 formed in a disc shape.
is supported so as to be freely rotatable by a presser plate 12 fixed to the base 8 with setscrews 11 through washers 9 and ball bearings 10 shown in FIG. Two large and small torsion springs 13 and 14 are housed in the main body 4 in a wound state,
One end 13a, 14a is connected to the base 8, the other end 13
b and 14b are hooked to the main body 4, and by rotating and lowering the arm 1 from the upright closed position to the forward-folded open position, the torsion springs 13 and 14 are tightened and a driving force is generated. is stored, and a returning force (returning force) is applied to the arm 1 to rotate and raise the arm 1 to the upright closed position.

Also, a stopper 15 is screwed onto the base 8.
By regulating the rotation angle of the main body 4 by the stopper screw 16, the rotation range of the arm 1 is determined at a predetermined angle.

At the bottom of the arm 1, as clearly shown in FIG. 3, a unit pipe 20 is fixed internally with a set screw 7, with bearings 17, 18 fixed at both upper and lower ends by screws 19. , rotation axis 2
1 is supported in a state where it is rotatable and prevented from moving in the axial direction, and the rotating shaft 21 has a gear 22 attached to its lower end that meshes with a bevel gear 8a provided on the base 8. By rotating the arm 1 downward and upward, the rotating shaft 21 can be rotated forward and backward.

The rotating shaft 21 is interlocked via a damper unit C and a one-way clutch B so that a damper effect (braking force) is exerted only when the arm 1 is rotated upward.

That is, the one-way clutch B is constructed as follows.

As clearly shown in FIGS. 3 and 4, the rotating shaft 2
A torsion spring 27 is wound around the outer periphery of a cylindrical rotating hub 24 which is externally mounted on the rotary shaft 21 and fixed with a dowel pin 23, and a fixed hub 26 which is externally mounted on the rotating shaft 21 via an O-ring 25 so as to be rotatable. One end thereof is hooked to the fixed hub 26, so that the rotating hub 24 and the rotating shaft 21 can always rotate freely relative to the fixed hub 26 in the opposite direction to the winding direction of the torsion spring 27. It is configured so that it is always locked in the same direction and cannot rotate.

Therefore, the one-way clutch is formed in advance so that the rotating shaft 21 rotates when the arm 1 is rotated downward and is locked when the arm 1 is rotated upward.

On the other hand, the damper unit C is constructed as follows.

As clearly shown in FIGS. 3 and 4, the rotating shaft 2
A hollow adjustment bolt 28 is mounted on the outside of the adjustment bolt 1, and an adjustment nut 29 is screwed into a threaded portion 28a formed at the upper end of the adjustment bolt 28.

The adjustment bolt 28 is prevented from turning by a rotation stopper 31 mounted on the upper part thereof and fixed to the unit pipe 20 with a knock pin 30, and the shaft can be adjusted by moving the adjustment nut 29 forward and backward by screwing. It is possible to move in any direction.

Further, the adjustment bolt 28 is covered with an adjustment cylinder 32 formed by a plurality of (two in the illustrated example) gutter-like members 32', 32''... butted against each other so as to form a cylindrical shape. , the adjustable cylinder 32 has a movable cylinder 3
3 is externally mounted, and the lower end of the movable cylinder 33 is fixed to the fixed hub 26 of the one-way clutch B in a fluid-tight manner.

Further, an O-ring 3 is provided in the groove provided around the fixed hub 26 and the groove provided around the rotation stopper 31, respectively.
4 and 35 are fitted onto the inner surface of the unit pipe 20, and a high viscosity liquid 36 is placed between the movable cylinder 33, which is sealed by this, and the adjustment cylinder 32 and the unit pipe 20. Each is enclosed.

Further, the upper surface of the outward flange 28b provided on the outer periphery of the lower end of the adjustment nut 28 and the rotation stopper 31
The lower end surfaces of the adjustment cylinder 32 are formed into tapered surfaces 28c and 31a, respectively, and the upper and lower end surfaces of the adjustment cylinder 32 are also tapered surfaces 32a and 31a, respectively, so as to correspond to the tapered surfaces 28c and 31a.
32b, which allows the adjustment nut 2
9 is screwed to move the adjustment bolt 28 in the axial direction, the diameter of the adjustment tube 32 is expanded or contracted to adjust the clearance between the movable tube 33 and the high viscosity liquid 36 sealed therein, Viscous resistance force (braking force)
It is possible to adjust the amount.

Further, within the arm 1, the rotation shaft 2
A spring clutch D and a switch unit E are interlocked and connected to the upper end of the switch 1.

The spring clutch D is constructed as follows.

As clearly shown in FIGS. 4, 6, and 7, a rotating hub 37 is externally fixed to the upper end of the rotating shaft 21.
A pair of fixed hubs 38 and 39 rotatably mounted on both upper and lower ends of the rotary hub 37 are fitted with torsion springs 40 and 41, respectively, in opposite winding directions. One end 40a, 41a is hooked to each fixed hub 38, 39, and the other end 4
0b and 41b are respectively hooked to two rotating rings 42 and 43 that are fitted and arranged in parallel on the outer periphery of the intermediate portion of the rotating hub 37 so as to be freely rotatable, and are normally attached to the rotating hub 3.
7. The rotating shaft 21 is formed so that its left and right rotation is locked, and one of the rotating rings 4
By moving the downward lock release claw 42a of No. 2 in the direction opposite to the winding direction of the torsion spring 40, that is, in the direction of the arrow in FIG. By moving the lifting lock release pawl 43a of the other rotating ring 43 in the direction opposite to the winding direction of the torsion spring 41, that is, in the direction of the arrow in FIG.
is configured so that only the left rotation shown by arrow a' is free.

The switch unit E is constructed as follows.

As clearly shown in FIGS. 4, 6, and 7, a cylindrical locking switch 44 is mounted on the spring clutch D so as to be able to slide freely in the axial direction. A switch groove 45 with an opening at the lower end is formed in the peripheral wall of the lock switch 44 so that the lower lock release claw 42a and the upper lock release claw 43a can be controlled to move in the circumferential direction by reciprocating in the direction. .

The switch groove 45 is formed of a straight groove 45 parallel to the axis b, and inclined grooves 45b, 45b that are connected to the upper and lower ends of the straight groove 45 so as to be inclined in opposite directions in the circumferential direction.

The locking switch 44 has two leg pieces 44 extending axially from its upper end and facing each other.
a, 44a are fixed to the rod receiver 46 with screws so as not to rotate.
6, a rod 47 is fixed by a pin 48 and hangs vertically, and the rod receiver 46 and the upper fixed hub 38 of the spring clutch D are connected to each other.
A return spring 49 is interposed between the lock switch 44 and the lock switch 44 to support the end thereof, and the force of the return spring 49 pushes the lock switch 44 upward.

Further, a cam mechanism 50 for holding the lock switch 44 in a predetermined position is formed by a heart-shaped cam groove 50a and a lock spring 50b.

That is, the cam groove 50a is recessed on one side of the rod 47, and on the other hand, the cam groove 50a is recessed on one side of the rod 47.
b is vertically supported with its lower end rotatably supported by the fixed hub 38, and its bent upper end is slidably engaged in the cam groove 50a to form a known cam mechanism 50. There is.

Further, due to the reciprocating movement of the rod 47, the upper end of the lock spring 50b is slidably guided only in a predetermined direction within the cam groove 50a, and the upper end of the lock spring 50b is brought into contact with the lowermost end 50c of the cam groove 50a. The cam grooves 50a are formed to be engaged with the intermediate points 50d, respectively.

Further, in order for the switch unit E to be pushed back upward by the force of the return spring 49 and pushed down by the lever 3, the switch unit E and the lever 3 are connected as follows. There is.

As clearly shown in FIG. 5, the lower end of the switch rod 51 is rotatably supported on the rod receiver 46 by a pin 48, and the switch rod 51 is rotatably supported by a pin 48.
A rod receiver 52 is screwed onto the upper end of the rod 1 via a tightening nut 53 so that the rod receiver 52 can be moved and adjusted in the axial direction.

On the other hand, a lever arm 55 having a substantially L-shaped side surface is attached to the front side of the cap 54 fixed to the upper end of the arm 1, with one end of the lever arm 55 being pivotally supported by a pin 56 so as to be rotatable in the vertical direction. The rod receiver 52 is connected to the pin 5 at the other end of the lever arm 55.
7, a switch rod 51 and a lever arm 55 are connected.
The upper end bent portion 3a of the lever 3 is rotatably supported in the vertical direction on the bent portion of the lever 3, so that the lever 3 can be rotated forward from the position shown in FIG. 8 as shown in FIG. The rod 47 is connected via the lever arm 55, switch rod 51, and rod receiver 46.
The locking switch 44 is pushed downward, compressing the return spring 49 and pushing down.

Further, the switch unit E and the lever 3 may be connected as follows.

That is, in the case shown in FIG. 12, an eccentric shaft 58 is rotatably supported on the front side of the cap 54, and a projection protruding inward from the eccentric position of the eccentric shaft 58 and the switch rod 51 are pivotally supported. The front end of the eccentric shaft 58 and the lever 3 are connected by a universal joint 59, and by rotating the lever 3 in the direction around the axis, the switch rod 51 and the locking switch 44 are rotated by the amount of eccentricity of the eccentric shaft 58.
are connected so that they can be pushed down.

When using the lift coat hanger with the above configuration, the mounting plate 60 shown in FIG.
The base 8 of the power unit A is fixed to the mounting plate 60 with screws 62, and the arm 1 is attached so that it can be rotated and lowered to the forward position as shown in FIGS. 10 and 11.

In FIG. 1, 63 indicates the cover of the power unit A.

When the arm 1 is in the closed position, it is held in an upright position as shown in FIG. 8, and clothes (not shown) are stored in the storage chamber by being suspended from the hanger bar 2 using a hanger.

When the lever 3 is pulled forward as shown in FIG. 9 in the above-mentioned closed state, the locking switch 44, which was previously unlocked only as shown in FIG. 7a, is pushed down as shown in FIG. 7b. The lowering lock is released by the switch groove 45, so if you pull the lever 3 diagonally forward,
The arm 1 rotates forward and lowers around the base 8, and as shown in FIG. 10, it is folded forward to the open position, and in this state, clothes can be put in and taken out.

When lever 3 is released, return spring 4
Although the locking switch 44 is pushed back upward by the elasticity of the cam groove 50a, the locking switch 44 stops midway as the locking spring 50b engages with the intermediate point 50d of the cam groove 50a as shown in FIG. 7c. The raising lock and lowering lock work together to lock arm 1 in the open position.

When the lever 3 is pulled forward as shown in FIG. 11 in the above-mentioned open state, the lock switch 44 is pushed down as shown in FIG.
d, and then when the lever 3 is released, the lock switch 4 is released by the force of the return spring 49.
4 is pushed up, only the up lock is released,
The state returns to the state shown in FIG. 7a.

Also, while the arm 1 rotates upward from the open position and returns to the closed position, the damper unit C is operated by the one-way clutch B, and a damper effect (braking force) is activated, causing the arm 1 to move slowly and quietly. The rotation will rise and stop.

≪Effects of the Invention≫ Since the present invention is constructed as described above, the lowering lock is engaged when the arm is in the closed position, so even when the maximum load is applied, the arm remains stable in the closed position. Not only can it be held well, but since both the raising and lowering locks are engaged when the arm is in the open position, arm 1 does not swing when putting on and taking off clothes, making it easier to put in and take out clothes. Also, since the braking force that acts when rotating and lifting the arm uses the resistance of high viscosity liquid, there is little attenuation of power, and the rotation axis,
Since the one-way clutch B, damper unit C, spring clutch D, and switch unit E are all built into the arm, it not only has an excellent appearance, but also is easy to attach to a cabinet, etc. .

In addition, since a gear rotation mechanism is used to transmit braking force, etc., the allowable torque of braking force, one-way clutch B, free stop, etc. can be reduced by the ratio of the gears, and the delay in the operation of one-way clutch B can be reduced by the ratio of the gears. Moreover, since it is a direct drive system, the weight of the clothes and the force of the torsion spring are canceled out, making the operation light and easy, and there is no need to install another stop mechanism on the power unit A side, etc. You can freely select the stop angle and hold it in any position.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of a lift coat hanger according to the present invention, Fig. 2 is an exploded perspective view of a power unit in the same embodiment, and Fig. 3 is a rotating shaft, one-way clutch, and damper in the same embodiment. Fig. 4 is an exploded perspective view of the rotating shaft, one-way clutch, damper unit, spring clutch, and switch unit in the same embodiment, and Fig. 5 is an interlocking mechanism of the switch unit and lever in the same embodiment. Fig. 6 is a plan view showing the spring clutch and locking switch in the same embodiment, and Fig. 7 a, b, c, and d show the operating states of the spring clutch and switch unit in the same embodiment, respectively. The explanatory drawings shown in Fig. 8, Fig. 9, Fig. 10, and Fig. 11 are partial cutaways showing the operating states of the same embodiment corresponding to the operations shown in Fig. 7 a, b, c, and d, respectively. FIG. 12 is a partially sectional side view showing another interlocking mechanism of the switch unit and lever. 1... Arm, 2... Hanger bar, 3... Lever, 4... Main body, 8... Base, 20... Unit pipe, 21... Rotating shaft, 24, 37... Rotating hub, 26, 38, 39...Fixed hub, 27,
40, 41... Torsion spring, 28...
Adjustment bolt, 32... Adjustment tube, 33... Movable tube, 3
5... Rotation stopper, 36... High viscosity liquid, 42a...
...Lower lock release claw, 43a...Uplock release claw, 44...Lock switch, 45...Switch groove, 49...Return spring, 50...Cam mechanism, A...Power unit, B...One-way Clutch, C...damper unit, D...spring clutch, E...switch unit.

Claims (1)

[Claims] 1 The lower end of a hollow arm with a hanger bar and a lever for rotation operation attached to the upper end is fixed to the main body which is rotatably supported on the base, and the arm is given a return force to rotate and rise. The formed power unit, a rotating shaft supported in the arm so as to be interlocked by the base and a gear rotation mechanism and capable of forward and reverse rotation by lowering and increasing the rotation of the arm, and a rotating shaft connected to the rotating shaft. On the other hand, a torsion spring is wound around an integrated rotating bub and a rotatable fixed bub, and the rotating shaft is rotatable in a direction opposite to the winding direction of the torsion spring and in a winding direction. A one-way clutch is formed to be lockable, and a detent is fixed to a unit pipe fixed in the arm, and an exterior is attached to the rotating shaft so that the detent prevents rotation and the movement can be adjusted in the axial direction. An adjusting cylinder and a movable cylinder are arranged between the adjustable bolt and the unit pipe, the lower ends of the movable cylinders being fixed to the fixed hub of the one-way clutch, and between the movable cylinder and the unit pipe and the adjusting cylinder. One torsion spring is attached to each of a damper unit formed by enclosing a high viscosity liquid, a rotating hub to which the rotating shaft is fixed, and a pair of upper and lower fixed hubs to which the rotating hub is rotatably fitted. A spring clutch is wound in opposite directions and symmetrically, and has one end hooked to each fixed hub, and is normally formed to be able to lock both left and right rotations of the rotating shaft. A locking switch that is movably mounted and engaged in a switch groove so that each lock release claw can be controlled is made reciprocatable in the axial direction by the lever and an interposed return spring, 1. A lift coat hanger comprising: a switch unit capable of being held at a predetermined moving position by a cam mechanism;