JPH0422085B2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention provides a storage section at a high place, for example, in 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 the hanger bar installed at the upper end of the arm, and stored so that they can be removed. Regarding the so-called lift hanger.

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

<<Problems to be Solved by the Invention>> However, in the case of conventional lift hangers, in the closed position (storage position) where the arm is in an upright position and in the open position where the arm is in a low position with the arm folded forward. The driving force applied to the arm is attenuated, so that the arm stops at the closed position and the open position and is held there.

Furthermore, since it is a direct drive system, the weight of the clothes and the force of the torsion spring cancel each other out, making it possible to rotate the arm with a light force, so the load can be minimized (with a small number of clothes).
In this case, if the hanger bar stops in the open position, or if the maximum load (many clothes) is applied, it becomes uncertain that it will stop in the closed position, and the hanger bar will not move up or down in the open position. Not only does it sway, making it difficult to put on and take off clothes, etc.
There are disadvantages in that the arm may rotate upward even if a slight external force is applied, and the stored state may become unstable.

Therefore, in order to solve the above-mentioned problems, it is necessary to separately equip the power unit with a complicated mechanism such as a stopper, but this not only increases the cost but also requires the installation work to the cabinet etc. It becomes troublesome, and there are problems such as these mechanisms are exposed and the appearance becomes bad.

The present invention was made in view of the above problems of the prior art, and has two torsion springs that are wound in opposite directions and are normally locked in either the left or right direction of rotation. A free stop mechanism is constructed by linking the spring clutch with a switch unit that can be locked and unlocked using a cam mechanism, and the arm can be moved without separately installing a stop mechanism. In addition to the closed position and open position, the arm can be stopped at any angle of inclination, and when stopped, a stable state is ensured in which the arm does not rotate in either the up or down direction. That is its purpose.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention has a hanger bar at the upper end and a lower end of a hollow arm provided with a lever for rotation operation, which is connected to the rotation of a power unit equipped with a torsion spring. By fixing it to a movable main body, the power unit applies a return force to rotate and raise the arm to an upright state, and the arm has the above-mentioned power unit that can be rotated in the forward and backward directions by rotating the arm downward and upward. A rotating shaft is supported by a power unit and a gear rotation mechanism, and one torsion spring is connected to the rotating shaft and two fixed hubs rotatably fitted to the rotating shaft. By winding the spring in opposite directions, one end of the spring is provided with each lock release pawl, and the other end is hooked to each fixed hub to form a spring clutch that can be locked in either left or right rotation. A locking switch that engages each of the lock release pawls of the clutch so as to be controllable in the circumferential direction by sliding in the axial direction is capable of freely reciprocating in the axial direction by compressing the return spring by operating the lever, Another object of the present invention is to provide a lift hanger characterized in that a switch unit that can be held in a predetermined moving position in stages by a cam mechanism is linked with the spring clutch.

<<Operation>> When the arm is in the closed state, the lock switch is pushed back upwards (to the right in Figure 5) by the force of the return spring, and the switch groove provided on the side wall of the lock switch As shown in Fig. 5a, the lock release claw of one torsion spring is pressed and moved in the circumferential direction (opposite to the winding direction) from the axis, and only the lifting lock is released, and the rotating shaft rotates the arm to raise it. However, since rotation in the opposite direction is locked, the arm is locked in the closed position and immovable.

When the lever is pulled forward and downward from the above-mentioned closed position, the locking switch slides downward (to the left in Figure 5b) against the elasticity of the return spring, and the switch groove releases one torsion spring. The lock release claw returns to the axis and becomes in the raised lock state, but the other torsion spring's lock release claw is moved in the circumferential direction opposite to the winding direction to release the lower lock state. Become.

When the lever is further pulled, a rotational force is applied to the arm, so the arm, which is in the upright position when closed, is rotated forward together with the main body using the base of the power unit as a fulcrum, and then lowered to the open position when it is folded forward. If the traction force on the lever is released at this point, the locking switch will be pushed up by the force of the return spring, and the locking switch will remain stopped at the halfway position by the switch unit as shown in Figure 5c. The lock release claws of both torsion springs are located on the axis as shown in the figure, and the raising lock and lowering lock work together.

In other words, the rotation of both the left and right rotational shafts is locked, and the arm is locked and held in the forward-folded open position.

When the lever is pulled again, the locking switch is pushed down, and when the lever is released, the locking switch is pushed back from the position d in the figure to the position a in the same figure by the switch unit and the return spring. Only the lock release claw of one torsion spring is moved by the switch groove in the opposite direction to the winding direction.
Only the raising lock is released, and the rotating shaft can rotate only in the direction in which the arm rotates upward, and the arm returns to the upright closed position, using the driving force (returning force) of the power unit stored when the arm rotates downward. It is then rotated up, stopped, and locked.

<<Example>> The present invention will be described in detail below using illustrated examples.
As shown in Figures 1 to 3, the arm 1 has a dogleg-shaped side surface, and a hanger bar 2 made of pipes or rods is horizontally attached to the upper end of the arm 1 for suspending hangers, etc. There is a lever 3 for rotating the arm 1 in the vertical direction and for pushing down and sliding the locking switch of the switch unit described later in the axial direction, and this lever 3 has one end. is pivotally connected to the arm 1 with a pin 4, and has a substantially L-shaped side surface.The lever arm 5 is pivotally connected to the arm 1 with a pin 6 near the bent part so as to be rotatable in the front-rear direction. It is installed vertically so that it can rotate in any direction.

The arm 1 has its lower end connected to the power unit A.
By being fixed to the connecting pipe 8 of the rotatable main body 7 with a set screw 9, the power unit A can be freely rotated in the front-back (up-down) direction indicated by arrows a and a' in FIG. be.

The power unit A is constructed as follows.

A presser plate 14 is fixed to the base 10 with setscrews 13 through washers 11 and ball bearings 12 shown in FIG. 3 so that the main body 7 can smoothly rotate on the base 10 formed in a disc shape. It is rotatably supported by a stopper 16 fixed to the base 10 by a stopper set screw 15, and is rotatable by a predetermined rotation angle by a stopper screw 17 provided separately.

Further, two large and small torsion springs 18 and 19 are attached to the main body 7, with one end 18a and 19a connected to the base 10, and the other end 18b and 19b connected to the main body 7.
By rotating and lowering the arm 1 from the upright closed position to the forward-folded open position, each of the torsion springs 1
8 and 19 are wound in the winding direction, a return force (return force) for rotating and raising the arm 1 from the open position to the closed position is stored. .

The winding angle of each torsion spring 18, 19 is determined by adjusting the adjusting screw 2 screwed onto the connecting pipe 8.
0.

By rotating the arm 1 downward and rotating upward, the gear 2 attached to the lower end of the rotating shaft 22 is rotated.
The rotating shaft 22 is supported by a bearing 24 of a unit pipe 23 fixedly installed in the arm 1 so that the rotating shaft 22 can be rotated in the forward and reverse directions by meshing with the bevel gear 10a of the base 10 and being rotated.

Furthermore, within the arm 1, the unit pipe 23 is always provided with a spring clutch B that is capable of locking the rotating shaft 22 in both left and right rotations, and a spring clutch B that locks and locks the spring clutch B. The switch unit C for canceling is
They are formed to interlock as detailed below.

That is, as clearly shown in FIGS. 4a and 4b, the spring clutch B has two fixed hubs 26 and 27 rotatably attached to both ends of a cylindrical rotating hub 25 fixed to the upper end of the rotating shaft 22. and one half outer periphery of the rotating hub 25 and one fixed hub 2.
Torsion springs 28 and 29 are wound around the outer periphery of the rotating hub 25, the other half outer periphery of the rotating hub 25, and the outer periphery of the other fixed hub 27, respectively, in opposite winding directions. Each fixed hub 2
6, 27, and the other ends 28b,
29b is respectively hooked to rotating rings 30 and 31 which are fitted and arranged in parallel on the outer periphery of the intermediate portion of the rotating hub 25 so as to be freely rotatable. Then,
The constantly rotating hub 25 and rotating shaft 22 are configured to be locked in both left and right rotations.

In addition, when the rotating rings 30 and 31 are provided as in the illustrated example, the lock release claws 30a and 31a are provided respectively.
The rotating rings 30, 31 are provided protrudingly.
If omitted, each torsion spring 28, 2
The other ends 28b, 29b of 9 are used as lock release claws.

Therefore, when the lock release claw 30a is moved in the direction of the arrow b shown in the figure (the opposite direction to the winding direction), the rotating shaft 22 is free to rotate only to the left as shown by the arrow b' in the figure, and the other lock release claw When 31a is moved in the direction of arrow c, the rotating shaft 22 is free to rotate only to the right as indicated by arrow c' in the figure, and both lock release claws 30 are free to rotate.
When a and 31a are moved in the directions of arrows b and c, respectively, the rotation shaft 22 becomes free to rotate both left and right.

Next, the switch unit c shown in FIG.
d, a cylindrical lock switch 32, a cam mechanism 33, and a return spring 34.
The structure is equipped with the following.

On one side of the peripheral wall of the lock switch 32 is a lock release pawl 3 of the spring clutch B.
A switch groove 35 for moving 0a, 31a as described above is formed to open toward the lower end (left end in the figure).

This switch groove 35 includes a straight groove 35a parallel to the axis d, and inclined grooves 35b, 35b which are connected to both ends of the straight groove 35a so as to be inclined in opposite directions in the circumferential direction.
The lock release pawls 30a and 31b are slidably engaged in the switch groove 35, and the locking switch 32 is mounted on the spring clutch B so as to be slidable in the axial direction. and a pair of leg pieces 32a, 32a extending symmetrically from the upper end (right end in the figure), the ends of which are pivotally connected to the rod receiver 36 by a fixing pin 37 as shown in FIG. The rod receiver 36
A connecting rod 38 pivotally connected to the other end of the lever arm 5 is connected to the locking switch 3.
2 is prevented from rotating, and the lever 3
By pulling forward, the locking switch 32 is pushed down and slid through the lever arm 5 and the connecting rod 38.

The return spring 34 is interposed between the spring clutch B and the rod receiver 36, and applies an upward return force to the lock switch 32.

In other words, the locking switch 32 is reciprocated up and down by the force of the lever 3 and the return spring 34.

Furthermore, the cam mechanism 33 is provided to displace the locking switch 32 to a desired position and hold it, and in the illustrated example, it is formed of a heart-shaped cam groove 33a and a locking spring 33b. be done.

That is, the cam groove 33a, as shown in the illustrated example,
The lock spring 33b is provided on the inner surface of the leg piece 32a of the locking switch 32, or on the side surface of a rod (not shown) connected to the rod receiver 36 together with the leg piece 32a, while the lock spring 33b has its lower end connected to the spring clutch B. fixed hub 2
7 so as to be tiltable, and its bent upper end is slidably engaged in the cam groove 33a.

In the state shown in FIG.
b is engaged with one of the lock release claws 30a, so that it is moved from the axis d in the circumferential direction (downward side in the figure), and the rotating shaft 22 can only rotate in the direction of the arrow b' shown in the figure. .

In other words, the rotating shaft 22 is in the unlocked state where it can rotate only in the direction of rotating the arm 1 upward.
By making this state the closed state of the arm 1 in an upright state, the rotation and descent of the arm 1 is locked.

FIG. 5b shows the state in which the lever 3 is pulled forward and the locking switch 32 is depressed.

In this state, only the other lock release pawl 31a is moved in the circumferential direction (opposite to the winding direction) from the axis d, and the rotating shaft 22 can only be rotated in the direction of the arrow c' opposite to the above-mentioned direction. The lock will be released.

At this time, one of the lock release claws 30a is connected to the straight groove 3.
5a, the raising lock is engaged, and therefore the arm 1 can be rotated and lowered.

FIG. 5c shows the state in which the traction force of the lever 3 is released.

It is held in the illustrated position by a cam mechanism 33,
Both lock release pawls 30a and 31a are engaged with a straight groove 35a of the switch groove 35, thereby engaging both the upper and lower locks.

In other words, the arm 1 cannot be rotated in either the up or down direction.

FIG. 5d shows the case where the lever 3 is pulled in the state shown in FIG. 5c.

After pulling the lever 3, when the pulling force is released, the locking switch 32 is activated by the force of the return spring 34.
returns to the rising position and returns to the state shown in figure a.

When using the above structure, attach the mounting plate 39 shown in FIG.
0..., fix the base 10 of power unit A to the mounting plate 39 with screws 41..., and attach the cover 42 to the base 1 so that it can be rotated and lowered so that the arm 1 is tilted forward. Attach.

When the arm 1 is closed, it is held in an upright position, and the clothes are stored in the storage chamber by being suspended from the hanger bar 2 using a hanger.

When the lever 3 is pulled diagonally downward in the above-mentioned closed state, the arm 1 rotates forward and descends around the base 10, and is held in the open position in the forward state, so that clothes can be put in and taken out in this state. Therefore, if the lever 3 is pulled down again from this state, the arm 1 can be rotated upward.

<<Effects of the Invention>> Since the present invention is configured as described above, two torsion springs are wound in opposite directions so that both left and right rotations of the rotating shaft are always maintained in a locked state. A free stop mechanism is created by interlocking a spring clutch B, which is formed to allow the arm to stand up, and a switch unit C, which is formed so that the rotating shaft can be locked and unlocked using a locking switch and a cam mechanism. When the arm is in the closed position, the lowering lock is engaged, and when the arm is in the forward position and open, the raising lock is engaged, and by being able to stop and lock the arm in the closed position and the open position, each position is stably maintained. Not only can the arm be stopped at any angle as required, but when stopped, the arm can be completely fixed without moving up or down, and the locking switch is secured by a lever and a compression spring. It is moved by
Pull the lock and unlock lever on the arm,
In addition, this can be done by simply releasing the traction force, and since the rotation of the rotating shaft is controlled inside the arm, not only is there no need for any other stop mechanism on the power unit side, etc. Since each mechanism is built into the arm, it can be easily attached to a cabinet, etc., and the design can also be excellent in appearance.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the lift hanger according to the present invention, FIG. 2 is a partially cutaway side view of the same embodiment, and FIG. 3 is an exploded perspective view of the power unit in the same embodiment. Figures 4a and 4b are perspective views and vertical side views showing the spring clutch in the same embodiment, and Figures 5a to 5d are operation explanatory diagrams showing the operating states of the spring clutch and switch unit in the same embodiment, respectively. . A...Power unit, B...Spring clutch, C...Switch unit, 1...Arm,
2... Hanger bar, 3... Lever, 7... Body, 18, 19, 28, 29... Torsion spring, 22... Rotating shaft, 26, 27... Fixed hub, 30a, 31a... Lock release Nails, 32...
Lock switch, 33...Cam mechanism, 34...
Spring for return.

Claims (1)

[Claims] 1. By fixing the lower end of the hollow arm, which has a hanger bar and a lever for rotation operation on the upper end, to the rotatable body of a power unit equipped with a torsion spring, the power unit can rotate the arm into an upright position. A rising return force is applied, and a rotating shaft is supported within the arm, which is interlocked with the power unit by a gear rotation mechanism so as to be able to rotate forwardly and reversely by rotating the arm downward and rotating upwardly. and two fixed hubs rotatably fitted to the rotation shaft, each torsion spring is wound in opposite directions, and each lock release pawl is provided at one end of the spring. By hooking the other end to each fixed hub, a spring clutch is formed that can lock both left and right rotation, and each of the lock release claws of the spring clutch can be slid in the axial direction to rotate the spring clutch in the circumferential direction. A locking switch that engages in a controllable manner is configured to be able to reciprocate in the axial direction by compressing the return spring by operating the lever, and to be held in a predetermined moving position in stages by a cam mechanism. A lift hanger characterized in that a switch unit is linked with the spring clutch.