JPH0453546B2 - - Google Patents

Abstract

A raising plate (14) is supported by two guide arrangements (16) in the form of pivot frames (18, 20) connected to one another in a hinged manner. In the raised position of the plate (14), the pivot frames (18, 20) are so upright that the slide bearings (28, 34) of the pivot frames (18, 20) tend to jam in the rails (30) guiding them. If the raising arrangement is activated so as to effect a lowering movement of the plate (14), the plate (14) would retain its height position on account of the tendency of the slide bearings (28, 34) to jam. This tendency to jam is overcome by virtue of a spring arrangement (36) engaging in the area of the upper pivot bearing (34) of at least one guide arrangement (16). <IMAGE>

Description

Detailed description of the invention [Industrial field of application] The invention comprises a bottom support, a lifting plate and a guide and lifting device arranged therebetween, in which at least one guide device is articulated with each other in a scissor-like manner. having two oscillating frames connected, each of which oscillating frames having two coaxial fixed bearings on the bottom support or lifting plate and two likewise coaxial moving bearings on the lifting plate or bottom support; Relating to bathtub inserts. The lift plate must be raised to the level of the bathtub rim if a disabled person cannot reach the lift plate. The lift plate is then lowered together with the disabled person into the bathing position.

BACKGROUND OF THE INVENTION German Patent No. 3,324,294 and US Pat. No. 4,660,234 show bathtub inserts of this type. These bathtubs require significant lifting and lowering of the lifting plate. If their rocking frames reach a steeply inclined position and the moving bearings therefore have rail-guided slides, automatic clamping can occur. This lifting plate then drops impulsively for a certain point in time when it is no longer supported by the lifting device and the automatic clamping is lost due to the movement of the disabled person supported by the lifting plate. there's a possibility that.

[Problem to be solved by the invention] Their swing frames can be made longer, but then the lifting plate and the bottom support must also be made longer, which is not possible with short bathtubs. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a bathtub insert that allows a lifting plate having a swinging frame that is steeply inclined from a raised position to be lowered in a non-sudden manner.

[Means for solving the problem] According to the invention, this object is achieved by a spring device in at least one rocking frame of the at least one guide device in the case of an upward movement of the lifting plate at least during the last rocking stage of the rocking frame. The problem is solved by the fact that a pivoting torque is applied to this pivoting frame and counteracting its upward pivoting movement.

From British Patent No. 2156210 with a lifting device without a bottom support and installed horizontally below the lifting plate
Bathtub inserts are known in which devices are provided with a spring arrangement in the form of one or two tension springs, which pull the upper moving bearing of the swing frame against the upper fixed bearing end. This spring device pulls the lift plate towards the top. In steeply tilted positions of the swing frame, this spring device assists automatic clamping faster.

A bathtub insert is known from US Pat. No. 3,106,723, in which the lower end of the swing frame is fixed and the upper end is movable. The lifting plate is connected to the upper ends of both swing frames via a spring device so as to be held in an intermediate position.
The spring device again pulls the lifting plate towards the top.

The spring arrangement according to the invention, on the other hand, is tensioned during the upward movement of the lift plate. The maximum stored spring force is available at the beginning of the downward movement of the lifting plate and acts in the direction of the downward swinging of the swinging frame, thereby preventing a possible tightening of the displacement bearing. This force of the spring arrangement advantageously acts in the direction of movement of the displacement bearing. This is because the maximum action is then achieved with the minimum spring force.

This spring device can be designed, for example, as a leaf or helical spring and is mounted in the articulation region of both swing frames, so that this spring is tensioned when the angle between the two frames is reduced.
For example, it is also within the scope of the invention to use a tension spring in the form of a strong rubber band, said rubber band being fixed at a leg that is associated with a moving bearing of a rocking frame and at the other end supporting a lifting plate or a bottom. They are fixed at fixed points in the body, so that their moving bearings are pulled apart by their fixed bearings. A particularly preferred embodiment of the invention is characterized in that the spring device has a straight bar, in which a helical compression spring is provided, which compression spring presses against the head of the bar, and the head moves the swinging arm. forming a stop for the bearing area and the other end of the rod being guided in an axially movable manner in a hole or conduit in a fastening fitting, said fitting having a front face and a rear face and between said front face and rear face said A hole or conduit extends from which the other end of the helical compression spring is supported on the front surface and a leg provided at the other end of the rod rearwardly engages the rear surface of the fastener.
Preferably, said helical compression spring is preloaded so that the leg of the rod is also supported on the rear side of the fixture. This fixture is preferably mounted inside a rail, said rail also guiding the movement bearing of the swing frame. Its displacement bearing or the moving device moved by it is therefore in contact with the head of the rod of the spring device during the last oscillation phase of the oscillating frame and the rod is under the axial compression action of the helical compression spring. Move back. Therefore, in this example,
It's advantageous. This is because this embodiment requires less assembly length. The space required for assembly is always present between the level bearings of both swing frames of each guide, even when the swing frames are inclined very steeply.

[Embodiments] The invention will be explained in detail on the basis of the accompanying drawings, which show some embodiments.

The bathtub insert 10 includes a bottom support 12 and a lifting plate 1.
4. two guiding devices 16 of each two articulated and interconnected rocking frames 18, 20;
two pressure water hoses 24 whose frames are synchronized for common movement by control rods 22;
The ends of these hoses are connected to the bottom frame 12 and the lifting plate 1.
Fixed at 4.

The two swing frames 18, 20 are rectangular frames which are articulated with one another in their intermediate region by articulation rods. Since the swing frame 20 is narrower than the swing frame 18,
This frame 20 fits neatly in the lowered position of the lift plate 14. The outer swing frame 18 has two
It has one fixed bearing 26 and two downward movement bearings 28, which movement bearings are guided by the rails of the bottom frame 12. The inner swing frame 20 has two lower fixed bearings 32 and two upper moving bearings 34, which moving bearings are guided on the underside of the lifting plate 14 by suitable rails.

Transversely above between the two displacement bearings 34 of the inner swing frame 20 there is a spring device 36 in the form of a strong rubber rope, the other end of which is connected to another guide device 1.
6 and between the two fixed bearings of the outer swing frame 18. This end of the rubber rope can equally well be fixed on the underside of the lifting plate 14.

If the lifting plate 14 is now advanced to the high position shown in FIG. 2, the spring device 36 is increasingly tensioned. Swing frames 18, 20 of each guide device 16
is placed on a very steep slope, and when the pressure water hose 24 is subsequently unloaded, the moving bearing 34 is not clamped on the rail 30. This is because the spring device 36 prevents or overcomes this type of tightening.

3 and 4 show a modified embodiment of the spring device 36, which device has a fastening fitting 38 whose cross-section is approximately equal to the inside cross-section of the rail on the bottom side of the lifting plate 14. This metal fitting also extends for a certain length inside the rail 30. A straight rod 40 extends through the entire length of the fixture 38, and this rod is free to move in a hole 42 provided in the rear portion of the fixture 38.
Penetrate with. The hole 42 extends through the side wall of the fastener 38 and is followed by a channel-like cut 44 which opens towards the front and opens at the top, this cut having a slightly larger cross-section than the hole 42 . A cylindrical helical compression spring 46 is threaded through the rod 40 for longitudinal movement, and one end of the spring is supported by a nut screwed onto the rod 40, which nut forms a head 48 for the rod 40. The other end of the helical compression spring 46 contacts the front side of the side wall with the hole 42 . Helical compression spring 46
is assembled with a preload, so the rod 40
A nut screwed into the rear end of the lateral wall is supported on the rear face of this side wall. This nut forms the leg 50 of the rod 40. The fixing fitting 38 is constructed in the form of a plastic body which is screwed onto the side wall of the rail 30 by two screws 52. According to FIG. 3, the inner swinging frame 20 of each of the two guiding devices 16 swings counterclockwise towards the top, and both moving bearings 34 in the form of sliding members running on rails 30 move contact with the heads 48 of possible rods 40, respectively. When the swing frame 20 swings further, the rod 40 is moved towards the left and the compression spring 46 is compressed. Swing frame 1
The more tightly 8, 20 are placed, the stronger the storage force of the compression spring 46 becomes. The force of the spring 46 is designed to overcome the tendency to tighten the travel bearing 34 of the rail 30 caused by the steeply tilted position of the swing arms 18,20.

In practice, it has been found sufficient to provide an effective spring travel for the spring device 36 of about 60 mm to about 80 mm. The entire spring device 36 then has approximately double the length. Due to the standard length of the fixture 38 inside the rail 30, the compression spring 46 is
A rod 4 that is forcibly guided and this spring extends inside.
0, this rod is stabilized by hole 42 at its rear end.
The tubular cut-out 44 guides the helical compression spring 46 directly to the forward end of the fastener 38.

[Brief explanation of the drawing]

1 is a front view of the bathtub insert of the bathtub in the half-raised position; FIG. 2 is a front view of the bathtub insert similar to FIG. 1 but in the fully raised position; FIG. 3 is a longitudinal cross-sectional view of the upper part of the guide device of the bathtub insert with a spring device for preventing clamping of the guide device; FIG. 4 is an enlarged view of the spring device along line 4--4 of FIG. FIG. 14... Elevating plate, 16... Guide device, 18,2
0... Swinging frame, 36... Spring device.

Claims (1)

Claims: 1. Two rocking frames, comprising a bottom support 12, a lifting plate 14 and four guiding and lifting devices provided therebetween, at least one guiding device 16 being interconnected in a scissor-like manner. Consisting of 18; 20,
Each frame has a coaxial fixed bearing 32; 26
are also provided on the bottom support 12 and the lifting plate 14 with two similar displacement bearings 28; 34 on the lifting plate 14 and the bottom support 12, with at least one guide device 1
A spring device 36 is engaged in at least one rocking frame 18; 20 of at least one rocking frame 18; 20 of the rocking frame 18; In the bathtub insert where a rocking torque acts against the rocking motion of the navel, the spring device 36 is arranged approximately parallel to the lifting plate 14 and has one end on one side of the swinging frame and the other end on the side of the lifting plate. A bathtub insert characterized in that it consists of connected longitudinal compression or tension springs. 2. Bathtub insert according to claim 1, characterized in that the spring device (36) engages at least one axis of the displacement bearing (28; 34) of the at least one swing frame (18; 20) or in an adjacent region of the axis. 3. Bathtub insert according to claim 2, characterized in that the counter-bearing or deflection bearing of the spring device 36 and their point of action on the rocking frame 18; 20 lie in a plane approximately parallel to the lifting plate 14. 4. The spring device 36 has a straight rod 40 on which a helical compression spring 46 is provided, which presses at one end against the head 46 of the rod 40, which head presses against the swing frame 18; The other end of the rod 40 forms a stop for the moving bearing area, and the other end of the rod 40 is connected to the fastening fitting 3.
The metal fitting has a front surface and a rear surface, and the hole or conduit extends between the front surface and the rear surface. A leg 50 whose other end is supported on the front surface and which is provided at the other end of the rod 40 is attached to the fixture 38
Claim 1 characterized in that it engages rearwardly with the rear surface of the
The bathtub insert according to any one of items 1 to 3. 5. Bathtub insert according to claim 4, characterized in that the helical compression spring (46) is preloaded, the leg (50) of the rod (40) being supported on the rear side of the fastening fitting (38). 6 Swinging frame 18; 20 moving bearing 28; 3
4 is guided by parallel rails 30 and also has a spring device 36.
is mounted on at least one of the rails, and the travel bearing (28; 34) or the operating device moved by it is in contact with the spring device (36). bathtub insert. 7. The fastening fitting 38 consists of an elongated body which approximately adapts to the internal cross-section of the rail 30, which body has a hole 42 or a conduit in its rear region and a hole coaxial with the hole 42 or conduit in its forward region. 7. Bathtub insert according to claim 4, characterized in that the cut-out (44) has a larger cross-section than the bore (42) and in which a helical compression spring (46) is axially guided. 8. Bathtub insert according to any one of claims 4 to 7, characterized in that the rod (40) has at least one end a tapped portion, in which a nut is screwed, which nut forms the head (48) or the leg (50). body. 9. Bathtub insert according to any one of claims 6 to 8, characterized in that the body is screwed onto the side surface of the rail (30). 10. The bathtub according to any one of claims 1 to 9, wherein a spring device 36 is combined with each of the two moving bearings 28; 34 of the swing frame 18; 20 of the fixed or plural guide devices 16. insert body.