DE2915715C2 - Additional device for a severely handicapped lifter - Google Patents

Description

characterized,

f) that the lifter (1) with a controllable, motor-driven auxiliary chassis in detachable Connection stands as well

g) the chassis (15) has a motor (25) together with a connecting element (26) for driving the lifting screw spindle (3) and

h) carries a control command receiving and switching part (17) for the motors (30).

2. Additional device according to claim 1, characterized in that it has an additional motor (31) with a torque transmission element (32) for changing the distance (A) between the two bars (8, 9).

3. Additional device according to claim 1, characterized in that the auxiliary chassis has two drive wheels (23, 23 ') and that each drive wheel can be driven by a motor (29,30).

4. Additional device according to claim 3, characterized in that each of the two motors (29,30) for the two drive wheels (23,23 ') can be controlled independently of the other.

5. Additional device according to claim 1, characterized in that the control command reception and switching part connected to a control command generator (19) via low-voltage signal lines is.

6. Additional device according to claim 1, characterized in that a in the auxiliary chassis (15) Hand guide part (39) can be used.

7. Additional device according to claim 1, characterized in that in the auxiliary chassis (15) a acoustic alarm system (58) is included.

8. Additional device according to claim 1, characterized in that the signal control lines (64 and 65) for the drive motor (25) of the lifting screw spindle (3) and / or for the motor (31) for Spreading the spars (8,9) has end contact breakers (52,53).

9. Additional device according to claim 4, characterized in that the two motors (29 and 30) for the drive wheels (23 and 23 ') both by a switch (54) together or by other switches (56 and 56 ') can be controlled independently of one another.

10. Additional device according to claim 1, characterized in that the drive wheels (23 and 23 ') over a worm gear (35 to 38) driven by the associated motors (29 and 30) the drive worm out of engagement with the worm wheel by means of a handle (41) (38) can be brought

11. Additional device according to claim 1, characterized characterized in that there are coupling straps (20) on the cross member (6) of the lifter (1) is connectable.

The subject of the invention is an additional device for a severely disabled lifter (in the following briefly referred to as lifter) according to the preamble of claim 1.

Such lifters on the market can be operated manually by an assistant. The hub of the A jib guided on a support column is carried out - depending on the type of lifter - by means of one of a hand crank-operated screw spindle or a chain. The side rails of the chassis are expandable by means of rods and hand lever.

There are also lifters with an oil-hydraulic drive on the market, the stroke of the boom being indirect here takes place by an electric motor, the drive energy of which is taken from batteries held on the lifter will. All these lifters have in common that they need an assistant for their operation. True are Hospital elevator known, which can be driven by means of a control device operated by the handicapped, have a seat that can be raised and pivoted out in the lane axis. Furthermore, from the CH-PS 6 02 098 a chassis with an electric drive for the transport of a wheelchair or hospital elevator known. This chassis has a comparatively low platform with two in the in the Track width of the wheels of the hospital elevator, trough-shaped rails installed; they serve to

• to take up the hospital elevator. The chassis carries two through one each on its underside Electric motor driven drive wheels as well as two smaller, drive-free, around a vertical axis swivel castors. By means of a control device that can be operated by the handicapped and which is connected to the connected to the chassis, the battery-powered motors are independent of each other controllable in such a way that when both motors are switched on the chassis straight out, however, when only one motor is switched on, it makes an arc. Meanwhile are Such chassis for receiving wheelchairs or wheelchairs of the type mentioned at the beginning Kind not suitable for a severely disabled person, e.g. B. od in a bathtub. In In any case, it must be ensured that the load caused by the handicapped when setting down in the Support surface of the vehicle holding the disabled on a boom falls. For this Basically, lifters for the severely handicapped have low-lying bars with swivel castors, between and over this the disabled in a harness hanging on the boom - be it a seat or belts - is held. To set the disabled, z. B. in a bathtub, the disabled person is lifted up Boom lifted over the edge of the bathtub; the bars of the lift are so flat in their overall height that they when starting the lift go to the bathtub under the floor so that the disabled person is now

is held over the tub trough and can be lowered into the tub in this position. Such a one Handling of the disabled is by means of the known elevators or chassis for the latter not possible. Many severely disabled people, e.g. B. below of the thoracic paraplegics are able to use their arms and hands to control equipment to use. It is therefore the purpose of the invention for such disabled people who are required to operate the known lifter to save necessary auxiliary personnel.

The invention is therefore based on the object using the known state of the art, a lifter for the severely handicapped according to the preamble of claim 1 to be upgraded by additional devices in such a way that it can be used for self-service by the This task is made possible by the characterizing features of claim 1 in solved in an inventive way.

If you connect the well-known lifter with a controllable auxiliary chassis, the drive wheels of which the give a mobile lifter a maximum speed of 0.5 m / s, so it is now that Disabled possible, through control commands z. B. to bring the lifter to the bed, the boom with it Lower the attached receiving device into the entry position. Available by the disabled Standing arm force, he can sit in the receiving device and now by further control commands to the motor for the lifting spindle, lift it out of the bed and - if desired - to the washroom travel. The control command generator, which is indirectly connected to the auxiliary chassis, is in the form one, e.g. B. held around the neck of the handicapped hanging box; but it can also be the control commander hang up on the device in the hand area of the mounting device. If you attach one to the boom comfortable seat, so the lifter can also be used as a home replacement for a motorized hospital elevator to serve. Depending on the type of handicap, the mounting devices to be attached to the boom can be different be, but also with z. B. od a work table. Like. Be connected.

It is also essential that the distance between the two spars, formed in the manner of a fork, can be changed. As already noted at the beginning, it is known per se with lifters, the mutual spacing of the swivel castors to change provided spars so that the disabled z. B. od close to a closet. can be driven up. In this case, the bars protrude between the cabinet supports under the Cabinet floor. When driving the disabled, the bars can be closer together; when stopping the Disabled people are at greater risk of tipping over; in this case the spars should be as far apart as possible stand. According to the feature of claim 2, the disabled by switching on the additional Motors control the distance between the two bars itself. The steering of the auxiliary undercarriage takes place advantageous through the individual control of a drive wheel motor; this enables the lifter can turn almost on the spot.

Further details of the invention are evident from the subclaims.

In the drawings, one of the invention corresponds to b5 chender lifter shown, where

F i g. 1 is a perspective view of the lift with the additional device.

F i g. 2 shows a cross-section of a section of the lifter with an additional device attached,

F i g. 3 one of FIG. 2 different drive for the Drive wheels of the additional device,

F i g. 4 a mechanism for spreading the bars of the lift,

5 shows the view of a control box for operating the lifter or the additional device and

6 shows an example of a circuit for controlling the additional device

According to FIG. 1, the lifter 1 consists of a support column 2, in the latter is a threaded spindle 3 for Hub of a boom 4 is supported by means of an attachable hand crank or ratchet 5, the threaded spindle can be operated manually. The support column is attached to a cross member 6; each from one end of this The crossbeams 8 and 9, which are equipped with swivel rollers 7, extend. The boom 4 consists here from a guide part 10 and a cantilever arm 11; the latter can be inserted and locked in the guide part. The cantilever arm can have the most varied of shapes and also mechanisms, namely these are on the type of disability z. B. of a disabled person but also on the type of activity to be performed (Walking aids, seating aids, etc.) As indicated by a faint dashed line, there is a disabled person in one the ring 12 attached to the cantilever arm 11 is held indirectly; on the ring is one made of leather or the like Seat flap 13 attached or hooked; Ring and seat flap give the disabled person a sufficient one Stop at the boom.

As can be seen, the lifter 1 can be connected to an additional device 14, namely a chassis 15. That The auxiliary landing gear carries three batteries of twelve volts each in a box 16, which are connected in series (NATO voltage 36 V), as well as a control command receiving and switching part 17, only indicated by dashed lines, which is preferably via a multi-strand low-voltage cable 18 (from about 1.5 to 2 m in length) with a Control box 19 is in circuit connection. The additional device also contains the motors for Operation of the functions to be explained later. The additional device is - as indicated by two dash-dotted lines Lines indicated - can be connected to the lifter 1; two coupling tabs 20 have a receiving hole 21 in which coupling pins 22 of the lifter 1 engage. The mutual outer distance of the Drive wheels 23 of the chassis 15 is dimensioned such that it is smaller than the length of the cross member 6 of the lift is.

As further from FIG. 2 as can be seen, the coupling pins 22 have a head thread; by means of a Screw toggle 24, the chassis 15 can be easily detached and connected to the lifter 1. In the additional device 14 are arranged according to the example four motors; the motor 25 is via a V-belt 26 with one on the Hub screw 3 arranged V-belt pulley 27 connected. Each drive wheel 23 is also here Via a V-belt 28 with the associated motor 29 and 30 - not shown here - in connection. A Another motor 31 is via a flexible shaft 32 and a plug coupling 33 with one in the cross member 6 mounted actuator 34, for expanding and narrowing the bars 8, 9 connected.

If the lifter with the additional device is only to be operated in level rooms, a V-belt drive is sufficient for the drive wheels, because caused by the inherent weight of the lifter and the additional device

Slopes - such as those that occur on a sloping route - do not occur. V-belt drives are robust; their technical effort is low. When the drive motors are switched off, the comparatively high driving resistance of the lift, the latter immediately to a standstill. Unless you use the lifter However, if you want to use it in rooms with a local floor slope, a drive as shown below is recommended shown and described.

F i g. 3 shows one of the two self-locking drives for the chassis 15. Via a flexible one Shaft 35 is driven by a worm 36; the latter is in the position shown with one on the Wheel axle 37 attached worm wheel 28 in engagement. With a comparatively low slope of As is known, worm and worm wheel lock such gears if a torque exceeds the Worm gear is transmitted to the resting worm. The disadvantage is inter alia. in the higher technical Effort, the lower transfer efficiency, but mainly in the fact that in the application such a transmission for the additional device, the latter in the de-energized state, d. H. without the involvement of Drive motors, cannot be manipulated or can be guided by an assistant on the handle 39 (FIG. 1). To a To enable the additional device to move by hand, the worm is mounted in a swivel fork 40, it is locked in the position shown by means of a hand lever 41 with the worm wheel; becomes the hand lever raised in the direction of arrow 42, the worm comes out of action under the pressure of tension spring 43 Engagement with the worm wheel. The additional device, possibly together with the lifter, can now be replaced by a Auxiliary person can be driven manually.

The mechanism 34 for spreading the spars 8 and 9 according to FIG. 4 also takes place here by means of a Worm drive, consisting of the drive worm 44 and one attached to an internally threaded spindle 45 Drive wheel 46. In the cross member 6, consisting of a box made in a welded construction, U-profile sheet metal supports 47 are stored or pushed in; they carry two guide strips 48. On the inside of each sheet metal support 47 and 47 'are Support brackets 49 and 49 'attached, each holding a threaded spindle 50 and 50'. The right part of the Internally threaded spindle 45 has a right-hand thread, the left-hand part of this spindle has a left-hand thread Threads, the threads of the spindles 50 and 50 'are cut accordingly. Does the drive wheel turn in Clockwise rotation, if the sheet metal carriers are extended from the cross member, the drive wheel runs in other direction of rotation, the sheet metal supports are in the Cross member retracted. The sheet metal supports are connected to the bars 8 and 9 at their outer end faces. In the guide bar 48 'there is an incision 51, which actuates a switch 52 in the maximum possible extended position of the sheet metal carrier (s); the desk has a contact that interrupts the control circuit of motor 31. A corresponding limit switch 53 interrupts the circuit when the sheet metal carrier is in the inner retracted position are located.

F i g. 5 shows a view of the control box 19 to be operated by the handicapped. The one with a small one Control rod 54 equipped switch is for forward and reverse travel, according to the ones shown Arrows. The switches, preferably push button switches 55 and 55 ', control the raising and lowering of the Boom 4. Push button switches 56 and 56 'control rotation of the lift to the right or left. the Switches 57 and 57 'cause the spars to expand or retract when they are operated as desired. A Alarm switch 58 triggers an acoustic alarm when it is actuated. Preferably the main switch is 59 attached to the side of the control box. The control box can be opened using either a strap, hanging around the neck, worn by the disabled, but also e.g. on the extension arm 11, 12 be attached. It is also possible to attach the control box to the guide rod 39, if it is intended to facilitate the work of an auxiliary person.

To the in Fi g. 6 shown control circuit is too notice that all power current carrying switches by relay or diode switch indirectly via the Control box 19 can be controlled with a control voltage of 12 volts; this low power circuit is not shown in the circuit diagram. From the control rod 54 are optionally z. B. the magnets 54+ or 54- controlled. As a result, the switches 60 and 60 'are used to switch on the motors 29 and 30 for the Chassis 15, depending on the position of the switch for forward or reverse. Is z. B. in Fig. 5 the switch 56 is actuated, only the travel switch 61 for motor 30, reverse gear is actuated. The lifter turns Then right. In a corresponding manner, the lifter is rotated to the left when the

in switch 56 '. If desired, the lifter can also be turned almost on the spot when the Motor 29 z. B. switches in the forward and the motor 30 in reverse. In this case it can Control box according to FIG. 5 have additional switches 62 and 62 '; are z. B. both switches 56 'and 62' operated together, the lifter turns left on the spot. The motor 31 for spreading the spars is through the Power switch 63 controllable, depending on the position of the switch in a clockwise or counterclockwise direction. the Lines for the limit switches 52 and 53 shown here in dashed lines are not in the power flow, but in the control circuit. Limit switches are also attached to the support column 2, here with 52 'and 53' are designated; when one of the switches 55 or 55 'is actuated, the motor runs to raise or lower the Boom 4 directly on; the boom is therefore in an intermediate position, whereas in one Actuation of switch 57 ', the motor for retracting the bars cannot start because the control circuit by the limit switch 53 according to FIG. 4 is interrupted

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Additional device can be modified and designed in many ways within the scope of the invention; so it is B. possible to operate the drive wheels 23 with only one motor via a differential gear, with the Control of the drive wheels for cornering via one-sided differential lock controls another It is also possible to use the undercarriage 15 with only

bo to equip a steerable drive wheel.

However, there is the disadvantage of less maneuverability because the lifter can then no longer be rotated in the tightest of spaces.
The connections between the motor 25 to the lifting spindle 3 and from the motor 3t to the actuating drive 34 for spreading the spars can be made in a different way - as shown. So canr. z. B. instead of the V-belt and the two-sided pulleys one

Push-in coupling step, in which case the motor 25 for driving the lifting screw spindle in such a way on the additional device 14 is arranged so that its rotor shaft is directed axially to the lifting spindle 3. In a corresponding way The motor 31 can also be connectable to the actuating drive 34.

The motor is controlled in the example

indirectly from switch box 19 via Schwachsirom signal lines 18; but there is also the possibility

- At least individual functions of the additional device 14

- e.g. B. to control the chassis 15 via radio signals. so that the disabled call the lifter to the bed can or can park the lifter from the bed after use.

For this purpose 2 sheets of drawings

Claims (1)

Patent claims: 1. Additional device for a severely handicapped lifter, the latter consisting of, a) support column provided with a lifting screw spindle, b) one guided on the support column and connected to the lifting screw spindle, the load of the handicapped boom, c) a cross member carrying the support column, d) each one extending from the ends of the cross member with swivel castors provided spar, e) an actuating device for raising and lowering the boom,