KR100296177B1 - Drive system of the lift system - Google Patents

Abstract

The present invention relates to a drive device of a wheelchair for a disabled person, an elderly person, a patient, a pregnant woman, or a lift system, or a lift system for transporting a relatively heavy cargo, wherein the disk-type motor is provided with a rotating shaft having a predetermined length. And a cable driving pulley connected to and fixed to a rotating shaft of the disk-shaped motor to rotate the cable and rotating the disk, and a brake integrally provided on the disk-type motor to restrict rotation of the rotating shaft when the disk-type motor stops. And brake means including an annular plate and yoke fixed at predetermined intervals, a hub coupled to a rotating shaft inside the plate, a disk coupled to an outer periphery of the hub, and an inner portion of the yoke. Of the coil wound around the side, the armature interposed between the yoke and the disc, and the yoke It is configured to include an elastic member that is accommodated inside and elastically supports the armature.

According to the present invention as described above, the overall shape of the drive device is slimmed to reduce the installation space, and further improve the efficiency by reducing the friction loss between the power transmission member.

Description

Drive of the lift system

The present invention relates to a drive system of a wheelchair for a disabled person, an elderly person, a patient, a pregnant woman, etc. or a lift system for carrying a relatively heavy cargo, and more particularly, to slim the overall shape. Therefore, the present invention relates to a drive system of a lift system that reduces installation space and reduces frictional losses between power transmission members to further improve efficiency.

Conventionally, various types of lift systems for carrying wheelchairs for the disabled, senior citizens, patients, pregnant women, etc., or relatively heavy cargoes are known, and the exemplary embodiments thereof will be described with reference to the accompanying drawings. .

As shown in FIG. 1, posts 2 are erected at corners of each staircase 1, and upper and lower guide rails 3 and 4 are fixed to the posts 2. A cable 22 (shown in FIG. 2) is inserted into the lower guide rails 3 and 4, and the cable 22 is connected to the drive device 5, and the cable 22 The boarding house 6 is connected to the predetermined part of).

According to the conventional lift system as described above, when a separate wheelchair is operated in a state in which a disabled person, an elderly person, a patient, a pregnant woman, or the like is mounted on the boarding car 6 or a relatively heavy cargo is mounted, As the cable 22 is moved by the driving device 5, the boarding car 6 is raised or lowered while being guided by the upper and lower guide rails 3 and 4.

An example of the drive device 5 will be described. A motor 12 having a rotating shaft 11, a brake 13 provided at one end of the motor 12, and a predetermined value from the motor 12 are provided. A gear housing 14 provided at intervals, a worm 15 supported rotatably on the same line as the rotation shaft 11 of the motor 12 in the gear housing 14, and the rotation shaft 11. Coupling means (16) for connecting the worm (15) and the worm wheel 17 is rotatably coupled to the inside of the gear housing 14, the worm 15 is engaged with the outer periphery, A drive sprocket 18 coaxially fixed to a central portion of the worm wheel 17, a driven sprocket 19 supported rotatably on one side of the gear housing 14, and the drive sprocket 18 and the driven sprocket. A chain 20 connecting the 19 and a drive pulley 2 coaxially fixed to the driven sprocket 19 It is composed of 1), the drive pulley 21 is connected to the cable 22 is inserted into the upper and lower guide rails (3) (4) shown in FIG.

When the power source is applied to the motor 12, the driving device of the lift system according to the related art, the rotary shaft 11 is rotated, the rotary shaft 11 and the coupling means by the rotation of the rotary shaft 11 The worm 15 connected to 16 rotates, and as the worm 15 rotates, the worm wheel 17 rotates to rotate the drive sprocket 18.

When the drive sprocket 18 is rotated, the driven sprocket 19 is rotated by the chain 20 connecting the drive sprocket 18 and the driven sprocket 19, thereby driving the pulley 21 By moving the cable 22 while being rotated is to raise and lower the boarding car (6).

However, the drive system of the conventional lift system as described above not only requires a relatively large installation space due to its large volume, but also drives the power of the motor 12 to the gears of the worm 15 and the worm wheel 16. As a structure to be transmitted to the drive pulley 21 by the bite structure, there was a problem of low efficiency for power transmission.

In more detail, the shape of the motor 12 is relatively large, as well as the overall volume is increased by the use of the worm 15 and the worm wheel 16, and there is a difficulty in requiring a large installation space. In the case of requiring a small space such as a wheelchair lift system, installation is almost impossible, and in the gear biting structure of the worm 15 and the worm wheel 16, the rotation ratio i is n (the number of gears of the worm 15). / z (number of teeth of the worm wheel 16), the rotation ratio (i) thus shows a value of 1; 60 ~ 1; 100, and as a result, the efficiency is only about 50% There was room for improvement.

Therefore, the main object of the present invention is to provide a drive system of the lift system to reduce the installation space by slimming the overall shape.

It is another object of the present invention to provide a drive system for a lift system that can reduce the frictional losses between power transmission members to further improve efficiency.

1 is a perspective view for explaining an example of a general lift system.

Figure 2 is a block diagram showing a drive system of a conventional lift system.

Figure 3 is a front view of the lift system with a drive of the present invention.

4 and 5 show a drive system of the lift system according to an embodiment of the present invention,

4 is a sectional view.

5 is an exploded perspective view.

6 and 7 show a driving device of the lift system according to another embodiment of the present invention,

6 is a sectional view.

7 is an exploded perspective view.

8 is a cross-sectional view taken along the line AA of FIG. 6.

Fig. 9 is a fragmentary cutaway perspective view for explaining the configuration of brake means constituting a drive system for a lift system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

41; Disc motor 42; Axis of rotation

43; Pulleys for driving cables 51; Magnet rotor

52; Coil assembly 54; Coil stator

56; Brake stator 58; brake

59,60; Bearing 61; Sun gear

62; Top cover 63; Support shaft

64; Planetary gear 65; Ring gear

66,67,68; bearing

In order to achieve the above object of the present invention, a drive device of a lift system for transporting a wheelchair or cargo while transporting a cable to raise and lower the lift car, comprising: a disk-type motor having a rotating shaft having a predetermined length; A cable driving pulley connected to the rotating shaft of the disk-type motor and being rotated together with the rotating shaft to transfer the cable, and brake means integrally provided with the disk-type motor to restrain the rotation of the rotating shaft when the disk-type motor stops. The brake means includes an annular plate and a yoke fixed at predetermined intervals, a hub coupled to a rotating shaft inside the plate, a disc coupled to an outer circumference of the hub, and a wound around an inner surface of the yoke. Of the coil, the armature interposed between the yoke and the disc, and the yoke Unit is housed in is probably provided with a drive device for a lift system, characterized in that configured by an elastic member for elastically supporting the armature.

It is configured to directly connect the cable drive pulley to the rotating shaft of the disk-type motor, or to reduce the speed of the disk-type motor by providing a speed reduction means by planetary gear between the disk-type motor and the cable drive pulley. .

The disk-type motor is characterized in that the brake stator is fixed to the housing, the brake built-in type is fixed to the inner surface of the brake stator.

The speed reduction means by the planetary gear is connected to the sun gear formed on a predetermined portion of the outer peripheral surface of the rotary shaft, the top cover is fixed to the end of the rotary shaft spaced apart from the brake stator by a predetermined width, between the brake stator and the top cover Rings which are fixed to several support shafts, rotatably coupled to the support shafts, and several planetary gears which are always engaged with the sun gears of the rotating shafts, and formed on the inner circumferential surface of the cable driving pulley Consists of gears.

In the construction of the drive system for the lift system according to the present invention as described above, the rotation operation of the cable drive pulley is more stably interposed between the motor housing and the cable drive pulley via a rotation support means such as a bearing. do.

Hereinafter, the driving apparatus of the lift system according to the present invention will be described according to the embodiment shown in the accompanying drawings.

Figure 3 shows an embodiment of a lift system with a drive device of the present invention, 31 is a staircase, 32, 33 is the upper and lower guide rails, 34 is a cable, 35 is a lift car, 36 Figures show the drive device which is the main component according to the present invention.

4 and 5 show a cross-sectional view and an exploded perspective view showing the drive device 36 of the lift system according to the present invention.

As shown in the drawing, the drive device 36 of the lift system according to the present invention includes a relatively thin disk type motor 41 and a rotating shaft coupled to and fixed to a central portion of the disk type motor 41. 42 and a cable driving pulley 43 which is integrally connected directly to the end of the rotary shaft 42 by a spline coupling or a key.

The disk-type motor 41 is to achieve a low torque and a large torque, looking at the overall configuration, a magnet rotor (51) which is integrally fixed to the rotating shaft 42, and the magnet rotor (51) A coil assembly 52 housed inside the coil), a coil stator (also referred to as a 'housing') 54 fixed to the coil assembly 52 by several fixing bolts 53, A brake stator 56 fixed to one side of the coil stator 54 by several fixing bolts 55 and a brake fixed to several inner side of the brake stator 56 by several fixing bolts 57. ), A bearing 59 is inserted between the rotary shaft 52 and the brake stator 56 to smoothly rotate the rotary shaft 42.

In addition, a bearing 60 is inserted between the brake stator 56 and the cable driving pulley 43 to smoothly rotate the cable driving pulley 43.

In the drawings, reference numerals 44 and 45 show locking nuts, respectively.

On the other hand, when the configuration of the brake 58 is described in detail, as shown in Fig. 9, the annular plate 71 and the yoke 72 are fixed at predetermined intervals, and the inner side of the plate 71. A square plate-shaped hub 73 coupled to the rotary shaft 42, a disk 74 coupled to an outer periphery of the hub 73, a coil 75 wound on an inner surface of the yoke 72, and , An elastic member such as an amateur 76 interposed between the yoke 72 and the disk 74 and a compression coil spring that is accommodated in the yoke 72 to elastically support the amateur 76 ( 77).

Referring to the operation of the lift system driving apparatus according to the present invention as follows.

That is, when power is applied to the disc-shaped motor 41, the magnet rotor 51 is subjected to rotational force by the normal electromagnetic action of the magnet rotor 51 and the coil assembly 52, and thus the magnet rotor 51 The rotating shaft 42 integrally coupled with the to rotate at a predetermined speed.

As the rotating shaft 42 is rotated, the cable driving pulley 43 directly connected to the rotating shaft 42 rotates, thereby driving the cable 34 connected to the cable driving pulley 43 to lift the car ( 35) to raise or lower.

At this time, since the bearing 59 is inserted between the rotation shaft 52 and the brake stator 56, the rotation of the rotation shaft 52 is smoothly supported, and the brake stator 56 and the cable drive are provided. Since the bearing 60 is inserted between the pulleys 43 for the support, the cable driving pulley 43 is smoothly supported for rotation.

As described above, in the structure in which the cable drive pulley 43 is directly connected to the disc-shaped motor 41, for example, a speed of about 400 rpm can be achieved. Therefore, in order to obtain a speed of about 100 rpm, it is preferable to provide a deceleration means by the planetary gear device between the disc-shaped motor 41 and the cable drive pulley 43.

On the other hand, when an emergency condition such as a power failure occurs while the power is applied to the disc-shaped motor 41 and the leaf car 35 is in operation, the lift car 35 is driven by driving the brake 58. It should be stopped to prevent safety accidents. The sequence of operations is as follows.

That is, since the disk type motor 41 is normally operating, the power is applied to the coil 75, so that a magnetic force is generated to adsorb the armature 76 to one side of the yoke 72. The hub 73 and the disk 77 are rotated together with the rotation shaft 42 without being constrained by the rotation. At this time, the elastic member 77 accommodated in the yoke 72 is maintained in a compressed state.

In such a state, when an emergency situation such as a power failure occurs, the disk-type motor 41 does not function properly and a situation in which the rotating shaft 42 is arbitrarily rotated occurs. In this case, the coil 75 Since the supply of power is cut off, the suction force by the coil 75 no longer occurs, and accordingly, the armature 77 is driven by the restoring force of the elastic member 77 accommodated in the yoke 72. By moving in the direction of 73 and being pressed against the disk 74, the rotation of the hub 73 and the rotating shaft 42 is restrained, and the driving of the lift car 35 is stopped.

On the other hand, Figures 6 to 8 show another embodiment of a drive device provided with a deceleration means by the planetary gear device, the configuration thereof will be described in more detail as follows.

As shown in the figure, the driving system of the lift system according to another embodiment of the present invention, the magnet rotor 51 is fixed integrally to the rotary shaft 42, and the coil housed inside the magnet rotor 51 An assembly 52, a coil stator 54 fixed to the coil assembly 52 by several fixing bolts 53, and a plurality of fixing bolts 55 fixed to one side of the coil stator 54. The brake stator 56, the brake 58 fixed to the inner surface of the brake stator 56 by several fixing bolts 57, and inserted between the rotary shaft 52 and the brake stator 56 are inserted. And a reduction means by a planetary gear device provided between the bearing 59 and the rotary shaft 42 and the cable drive pulley 43.

The speed reduction means by the planetary gear device includes a sun gear 61 formed on a predetermined portion of the outer circumferential surface of the rotary shaft 42 and a width of the sun gear 61 from the brake stator 46 at an end of the rotary shaft 42. A top cover 62 which is spaced apart and fixed to each other, several support shafts 63 for connecting and fixing between the brake stator 46 and the top cover 62, and rotatable to the support shafts 63, respectively. Coupled planetary gear 64 coupled to the sun gear 61 of the rotary shaft 42 and ring gears formed on the inner circumferential surface of the cable driving pulley 43 to always engage with the planetary gear 64. It includes (65).

A bearing 66 is inserted between the rotary shaft 42 and the top cover 62 to smoothly rotate the rotary shaft 42.

In addition, bearings 67 and 68 are inserted between the brake stator 46 and the top cover 62 and the cable driving pulley 43, respectively, so that the rotation of the cable driving pulley 43 is smooth. have.

In the drawings, reference numeral 44 denotes a locking nut, and 46 denotes a rolling bearing nut.

According to another embodiment of the present invention configured as described above, as in the embodiment of the present invention, the magnet rotor 51 and the rotating shaft 42 are rotated at a predetermined speed by the drive of the disc-shaped motor 41. Accordingly, when the sun gear 61 is integrally rotated by the rotation of the rotation shaft 42, the planetary gear 64 meshed with the sun gear 61 is rotated, and the planetary gear 64 is rotated. As a result, the cable driving pulley 43 in which the ring gear 65 is formed is rotated in a decelerated state.

At this time, the transmission power efficiency by the planetary gear 64 is 95% to 98%, it can be seen that it is superior to the power transmission efficiency by the conventional worm and worm wheels.

In another embodiment of the present invention described above, since the bearing 59 is inserted between the rotation shaft 52 and the brake stator 56, the rotation of the rotation shaft 52 is smoothly supported, and the brake stator is also provided. Since the bearings 67 and 68 are respectively inserted between the 46 and the top cover 62 and the cable driving pulley 43, the cable driving pulley 43 is smoothly supported for rotation. .

In the drive system of the lift system according to another embodiment of the present invention as described above, since the reduction ratio is reduced to about 1; 4 by the deceleration action by the deceleration means by the planetary gear device, the present invention does not include the deceleration means. If the speed of the drive device according to an embodiment of, for example, 400rpm, it can be reduced to 100rpm which is 1/4.

On the other hand, in the event of an emergency, such as a power outage, the brake 58 operates by the same action as described above to constrain the rotation of the rotary shaft 42, a description thereof will be omitted.

As described above, the drive system of the lift system according to the present invention, the disk-type motor having a rotating shaft having a predetermined length, and is connected to the rotating shaft of the disk-type motor is fixed and rotated together with the rotating shaft to convey the cable It comprises a cable driving pulley and the brake means which is integrally provided in the disk-type motor to restrain the rotation of the rotating shaft when the disk-type motor is stopped to reduce the installation space by slimming the overall shape, In addition, there is an effect of further improving the efficiency by reducing the frictional loss between the power transmission member.

Claims (8)

In a drive system of a lift system for transporting a wheelchair and lifting a lift car by transporting a cable, A disk-type motor provided with a rotating shaft having a predetermined length, A cable driving pulley which is connected to the rotating shaft of the disc-shaped motor and is rotated together with the rotating shaft to transfer the cable; It is provided integrally with the disk-type motor includes a brake means for restraining the rotation of the rotating shaft when the disk-type motor is stopped, The brake means includes an annular plate and yoke fixed at predetermined intervals, a hub coupled to a rotating shaft inside the plate, a disk coupled to an outer circumference of the hub, and a coil wound around an inner surface of the yoke. And an armature interposed between the yoke and the disc, and an elastic member accommodated in the inner portion of the yoke and elastically supporting the armature. The drive system of a lift system according to claim 1, wherein a pulley for driving a cable is directly connected to a rotating shaft of the disc-shaped motor. 3. The drive system for a lift system according to claim 2, wherein the disc-shaped motor has a brake stator fixed to a housing, and the brake means is fixed to an inner surface of the brake stator. 4. A drive system for a lift system according to claim 3, wherein a bearing is provided between the brake stator and the cable drive pulley. 2. A drive system for a lift system according to claim 1, wherein a speed reduction means by planetary gear is provided between the disc motor and the cable driving pulley to reduce the speed of the disc motor. 6. The drive system for a lift system according to claim 5, wherein the disc-shaped motor has a brake stator fixed to a housing, and the brake means is fixed to an inner surface of the brake stator. The speed reducing means of the planetary gear includes: a sun gear formed at a predetermined portion of an outer circumferential surface of the rotary shaft, and a top cover coupled to the end of the rotary shaft so as to be rotatable spaced apart from the brake stator by a predetermined width; Several support shafts for connecting and fixing between the brake stator and the top cover, several planetary gears coupled to each of the support shafts and rotatably engaged with the sun gear of the rotation shaft, and the inner peripheral surface of the cable driving pulley. The driving system of the lift system, characterized in that it comprises a ring gear which is formed and always engaged with the planetary gear. 8. The driving apparatus of claim 7, wherein bearings are respectively inserted between the brake stator and the top cover and the cable driving pulley.