JPH063595Y2 - Anti-rotation device for bath lift - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-rotation device for a bathing lift used for bathing a physically handicapped person.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a conventional bathing lift. In this bathing lift, an elevating cylinder 1 is erected on a floor surface F of a bathroom, and an outer cylinder 2 is provided on the outside of the elevating cylinder 1 so as to be movable up and down and rotatable through the elevating cylinder 1. A base end side of a support arm 3 is fixed to the support arm 2, and a chair 4 that supports a bather in a seated state is rotatably supported at a tip end portion of the support arm 3, and an outer cylinder 2 and a lifting cylinder 1 are provided. A rotation stop mechanism 5 for restricting the relative rotation therebetween is provided between them.

When bathing a bather such as a physically handicapped person by the bathing lift, first, the chair 4 is positioned at the elevated position via the lifting cylinder 1 as shown by the chain double-dashed line in the figure. At the same time, the bath B is turned to the opposite side, and the rotation stopping mechanism 5 is made to function at this position to suppress the rotation of the support arm 3, and the bather is placed on the upper portion of the chair 4 fixed in this way.

Then, the lock by the rotation stopping mechanism 5 is released, and the support arm 3 is rotated together with the outer cylinder 2 to position the chair 4 and the bather sitting on it on the bathtub B,
Then, the lifting cylinder 1 is operated to lower the chair 4 to the lowered position (shown by the solid line in the figure). As a result, the bather can be brought into the bathtub B and brought into a bathing state. afterwards,
When taking a bath, the bath lift is operated in the reverse order of the above, the chair 4 is again brought into the state shown by the dashed line in FIG. 2, and the bather is transferred to a stretcher or a wheelchair.

By the way, a rotation stopping mechanism 5 which is interposed between the outer cylinder 2 and the lifting cylinder 1 and restricts their relative rotation is pinned to a ring-shaped bracket 6 provided outside the outer cylinder 2. (Not shown) is provided so as to extend in the radial direction of the bracket 6, and the pin is advanced and retracted by a screw provided between the handle 6 and the bracket 6 by rotating the handle 7.
The tip of this pin is projected from the inner surface of the bracket 6 and pressed against the outer peripheral surface of the lifting cylinder 1.

[0006]

In the rotation stopping device for the bathing lift described above, a screw is used, and the tip of the pin is simply pressed against the outer peripheral surface of the lifting cylinder 1 to generate a frictional force between them. With this structure, the rotation of the support arm 3 that supports the chair 4 is restricted. The rotation restriction force is weak, and there is a risk that the support arm 3 will rotate when the chair 4 is pressed hard.

The present invention has been made in view of the above circumstances, and exerts a strong rotation regulating force, and even if a strong force is applied, the bather support portion such as a chair rotates around the lifting cylinder. An object of the present invention is to provide a rotation stopping device in a bathing lift that can regulate the temperature.

[0008]

In order to achieve the above object, the present invention provides a rotation stopping mechanism, wherein an external gear is fixed to the outer circumference of the lifting cylinder coaxially with the lifting cylinder. Is provided with a stopper member having a tooth portion that meshes with the tooth portion of the external gear so as to be movable in the radial direction of the outer cylinder and immovable in the circumferential direction, and the stopper member is connected to the external gear by a stopper member moving mechanism. It is configured such that it can be selectively switched to either a meshing position or a position where the meshing is released.

[0009]

When the rotation of the bather support such as a chair is suppressed, the stopper member moving mechanism moves the stopper member inward in the radial direction of the lifting cylinder, and the teeth of the stopper member move to the outer periphery of the lifting cylinder. It meshes with the teeth of the external gear fixed to the surface. As a result, the stopper member is restricted from moving in the circumferential direction with respect to the lifting cylinder, and the stopper moving member is attached to the outer cylinder so that it cannot move in the circumferential direction. Movement of the cylinder in the circumferential direction is restricted.

In this way, the rotation of the outer cylinder and hence the bather support portion is restricted by the meshing of the gears, so that a strong rotation stop can be realized, and even if a strong force is applied, a chair, etc. The bather support can be restricted from rotating around the lifting cylinder.

When the bather supporter is rotated around the lifting cylinder, the stopper member moving mechanism moves the stopper member radially outward of the lifting cylinder so that the stopper member and the external gear are separated from each other. It suffices to release the engagement.

[0012]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. In the following figures, the same components as those shown in the conventional example are designated by the same reference numerals to simplify the description. FIG. 1 shows an elevating cylinder 1 for supporting a bather supporting portion for supporting a bather in a seated state, for example, via a supporting arm 3 and an outer cylinder 2 provided outside the elevating cylinder 1.
FIG.

The lifting cylinder 1 will be briefly described. The lifting cylinder 1 supports a cylinder body 11, a piston 12 that is inserted into the cylinder body 11 so as to be movable along the axial direction, and the piston 12. However, it is generally configured with a piston rod 13 extending upward in the drawing.

When pressure oil is introduced from the hydraulic pressure introducing hole 15 of the connecting member 14 provided at the lower end of the cylinder body 11, the pressure oil is inside the cylinder body 11 and the connecting member 14
Is introduced into an oil chamber 16 formed between the piston 12 and the piston 12, and pushes the piston 12 and the piston rod 13 upward. On the contrary, when the supply of the pressure oil from the hydraulic pressure introducing hole 15 is cut off, a downward pressing force is originally exerted on the piston rod 13 by the load of the chair or the supporting arm 3 and the pressing force is applied. The piston rod 13 and the piston 12 move downward. In addition, piston 1
2 is provided with a plurality of oil passages 17 penetrating vertically (see FIG. 2).
The pressure oil guided to the cylinder is also introduced into the space 18 formed between the cylinder body 11 and the piston rod 13 through the gap formed between the cylinder body and the stopper 20. Reference numeral 21 is a rod cover fixed to the upper end of the cylinder body 11.

On the other hand, the outer cylinder 2 includes upper and lower sleeves 25, 2
The cylinder body 11 and the rod cover 21 are concentrically provided with each other via 6 and a cap 27 attached to the upper end of the piston rod 13 is used to move up and down and rotate integrally with the piston rod 13.

A rotation stop mechanism 30 is provided between the outer cylinder 2 and the elevating cylinder 1 to regulate their relative rotation. In the rotation stopping mechanism 30, an external gear 31 is fixed to the outer periphery of the lifting cylinder 1 concentrically with the lifting cylinder 1, and a tooth portion 32a that meshes with a tooth portion 31a of the external gear 31 is provided on the outer cylinder 2. The stopper member 32 is provided so as to be movable in the radial direction of the outer cylinder 2 and immovable in the circumferential direction, and further, the stopper member 32 is moved in the radial direction by the stopper member moving mechanism 33 to engage with the external gear 31. It is configured so that it can be selectively switched to any one of the positions where the meshing is released.

The ring stop mechanism 30 will be described in detail. A ring-shaped bracket 6 is fixed to the lower end of the outer cylinder 2, and the external gear 31 is rotatably arranged inside the bracket 6 with respect to the bracket 6. Has been done. Also,
The outer gear 31 has its upper end pressed against the sleeve 26 via a spacer 36 and its lower end abutted against a C ring 37 fitted to the inner surface of the bracket 6, thereby allowing the bracket 6 and the outer cylinder 2 to be separated from each other. It is designed to move up and down as a unit. Further, the key 38 is inserted into the inner surface of the outer gear 31, and the key 38 moves along the groove 39 formed on the outer peripheral surface of the cylinder body 11, whereby the outer gear 31 is moved to the cylinder of the lifting cylinder 1. Relative rotation is restricted with respect to the main body 11.

A stopper bracket 41 is fixed to the outer periphery of the bracket 6 by bolts 42 as shown in FIG. A stopper pushing shaft 43 is rotatably provided on the stopper bracket 41 via a bush 44. A pin 46 is fixed to a small diameter portion 43a of the stopper pushing shaft 43 existing inside the stopper bracket 41 by a bolt 47, and the pin 46 is formed on the stopper bracket 41 when the stopper pushing shaft 43 is rotated by a handle 48. By being guided by the inclined guide groove 49, the stopper pushing shaft 43 can be guided in the axial direction ((a) in FIG.
It is designed to move in the (b) direction. As shown in FIG. 4, lock portions 49a orthogonal to the axial direction of the stopper pushing shaft 43 are formed at both ends of the inclined guide groove 49.

The stopper member 32 is disposed inside the stopper bracket 41. Stopper member 32
As shown in FIG. 3, a box-shaped portion 50 in which the tooth portion 32a is formed, a large-diameter portion 51 extending from the box-shaped portion 50 to the left in the figure, and a small-diameter portion 52 extending further forward from the box-shaped portion 50. Has become. The small diameter portion 52 is the stopper push shaft 4
3 is inserted into the center hole 53, and a C-ring 54 for retaining is fitted to the tip of the central hole 53 so that the stopper push shaft 43 can move in the axial direction and the stopper pushing shaft 43 can move in the direction of FIG. When you move, you move with it. A spring pin 56 is inserted through the large diameter portion 51 of the stopper member 32, and the pin 56 is guided by a vertical groove 57 formed on the inner peripheral surface of the stopper bracket 41 to restrict rotation.

Further, 58 in FIG. 2 is a stopper pushing shaft 43.
A plurality of flat springs interposed between the stopper and the large diameter portion 51 of the stopper member, and 59 a compression spring interposed between the stopper pushing shaft 43 and the spring seat formed on the inner surface of the stopper bracket 41. In addition to these springs 58 and 59, the stopper pushing shaft 43, the pin 46, the stopper bracket 41
The inclined guide groove 49 constitutes the stopper member moving mechanism 33.

Next, the operation of the rotation stopping device in the bath lift of the above construction will be described. When the bather is placed on the bather support, it is necessary to suppress the rotation of the support arm 3. At this time, the stopper member moving mechanism 3
The stopper member 32 is moved inward in the radial direction of the lifting cylinder 1 by means of 3, and the tooth portion 32a of the stopper member 32 is meshed with the tooth portion 31a of the external gear 31 fixed to the outer peripheral surface of the lifting cylinder 1.

Specifically, the stopper push shaft 43 is rotated in one direction by the handle 48, and the pin 46 integrated with the stopper push shaft 43 is moved along the inclined guide groove 49 of the stopper bracket 41. By doing so, the stopper pushing shaft 43 is moved in the (B) direction in FIG. Along with this, the stopper member 32 is pushed by the flat spring 58 to move in the same direction, and the tooth portion 32 of the stopper member 32 is moved.
a meshes with the tooth portion 31 a of the external gear 31.

The external gear 31 is restricted from rotating with respect to the lifting cylinder 1 by the key 38, while the stopper member 32 is connected to the stopper bracket 41 and the bracket 6.
The rotation is restricted with respect to the outer cylinder 1 by way of this, and as a result, the rotation of the support arm attached to the outer cylinder 1 for supporting the bather is restricted with respect to the lifting cylinder 1. In this way, the bather is transferred to the chair while the rotation of the support arm 3 is restricted.

Thereafter, in order to enter the bathing state, the handle 48 is rotated in the opposite direction to the above, and the stop member 3 is rotated.
2 in the direction of (a) in the figure, and the stopper member 32
And the engagement of the external gear 31 with the external gear 31 is released. in this way,
The support arm 3 is brought into a free rotation state with respect to the lifting cylinder 1, and the support arm 3 is rotated by approximately 180 degrees as shown in FIG. And when the chair 4 comes right above the bathtub,
Again, the stopper member moving mechanism 33 moves the stopper member 32 inward in the radial direction of the lifting cylinder 1, and the stopper member 32 is meshed with the external gear 31 to support the support arm 3
The rotation of is regulated.

Then, in this locked state, the elevating cylinder 1 is driven to lower the chair together with the supporting arm to the lowered position to put it in a bath state.

After that, when taking a bath, the bath lift is operated in the opposite manner to the above, the chair 4 is again brought into the state shown by the chain double-dashed line in FIG. 5, and the bather is transferred to a stretcher or a wheelchair. Change. It should be noted that the type of supporting the bather is not limited to the chair, and may be a bed type capable of bathing in a recumbent state.

[0027]

As described above, according to the present invention, since the rotation of the bather support portion is restricted by the meshing of the gears, a strong rotation stop can be realized and a strong force is applied. Even in such a case, the bather support such as a chair can be restricted from rotating around the lifting cylinder, and moreover, the rotation can be finely stopped by the pitch of the gear.

[Submission date] October 29, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

Further, 58 in FIG. 2 is a stopper pushing shaft 43.
A plurality of flat springs interposed between the stopper and the large diameter portion 51 of the stopper member, and 59 a compression spring interposed between the stopper pushing shaft 43 and the spring seat formed on the inner surface of the stopper bracket 41. In addition to these springs 58 and 59, the stopper pushing shaft 43, the pin 46, the stopper bracket 41
The inclined guide groove 49 constitutes the stopper member moving mechanism 33.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a lifting cylinder and an outer cylinder arranged outside the rotation stopping device according to the present invention.

FIG. 2 is a detailed cross-sectional view of a lower portion of the lifting cylinder and an outer cylinder.

FIG. 3 is a transverse cross-sectional view of a lower portion of the lifting cylinder and an outer cylinder.

FIG. 4 is a view showing an engaged state of an inclined guide groove of a stopper bracket and a pin fitted therein.

FIG. 5 is a schematic view showing a conventional example.

[Explanation of symbols]

 1 Lifting Cylinder 2 Outer Cylinder 3 Support Arm 4 Chair (Bather Supporter) 30 Rotation Stop Mechanism 31 External Gear 31a Teeth 32 Stopper Member 32a Teeth 33 Stopper Member Moving Mechanism

Claims (1)

[Scope of utility model registration request] 1. An elevating cylinder is erected vertically on a floor of a bathroom, and an outer cylinder is concentrically provided outside the elevating cylinder and is vertically and pivotally movable through the elevating cylinder. A bather support portion, which is provided in the outer cylinder and supports the bather in a recumbent state or in a seated state, is fixed to the outer cylinder via a support arm, and the relative rotation between the outer cylinder and the lifting cylinder is restricted. In a rotation stopper device for a bathing lift provided with a rotation stopper mechanism, in the rotation stopper mechanism, an external gear is fixed to the outer circumference of the lifting cylinder concentrically with the lifting cylinder, and the outer cylinder is fitted with an external gear. A stopper member having a tooth portion that meshes with the tooth portion of the outer cylinder is provided so as to be movable in the radial direction of the outer cylinder and immovable in the circumferential direction, and the stopper member and a position at which it meshes with the external gear by a stopper member moving mechanism Bite Fits rotation stop device in a bath lift, characterized in that is configured to be switched alternatively at any position to be solved.