KR20010049058A - Driving system - Google Patents

Abstract

PURPOSE: A driving apparatus is provided to be capable of passing over a relative high obstacle or steps by operating wheels with a step motion in case that load over a predetermined value is applied to the wheels. CONSTITUTION: A first power transfer unit(16) comprises a sun gear(18) fixed to a main shaft(14), a planet gear(20) engaged with the sun gear to be rotated, and a ring gear(22) engaged with the planet gear. A carrier unit(24) is engaged with the main shaft(14) of a power generating unit(12) and is rotated when the planet gear revolves. A second power transfer unit(30) comprises a drive gear(32) engaged with the ring gear(22), a drive shaft(34) fixed to the drive gear(32), a power transfer gear(36) fixed to the other end of the drive shaft, a frame(38) having a fixed gear(40) engaged with a body(26) of the carrier unit(24), and a casing(42) fixed to the other end of the frame(38). A third power transfer unit(44) is coupled to the second power transfer unit(30) and transfers rotating power to a first wheel(72). A fourth power transfer unit(46) is coupled to the second power transfer unit(30) and transfers rotating power to a second wheel(74).

Description

Driving device {DRIVING SYSTEM}

The present invention relates to a driving device of various moving means, and more particularly, a driving device capable of crossing an obstacle or climbing a step by a step driving method when the moving means is blocked by an obstacle or a step while driving by the rotation of the wheel. It is about.

In general, a variety of means of transportation, such as a vehicle such as a passenger car or a commercial vehicle for a driver or a passenger, a wheelchair for the disabled or a patient to travel, a special vehicle such as an armored vehicle or a special vehicle such as a armored vehicle or a special vehicle such as a cargo or baggage This is widely developed and is useful not only for convenience but also for special purposes.

Such various means of transportation include a vehicle body 1, which can be loaded with human or cargo and can take various forms, as schematically shown in FIG. Of course, the engine 2 is mounted at a predetermined position of the vehicle body 1 to generate power. In addition, the vehicle body 1 is provided with a driving device for driving the wheel 3 in connection with the engine 2 and receiving power therefrom. Accordingly, when the engine is operated, the wheel or the vehicle can be driven or moved by rotating the wheel connected to the driving device.

Most of these means of transport, however, can only move smoothly when there are obstacles of flat or limited height, as the wheels only rotate about the axle or drive shaft, but they encounter sand, mud or high obstacles, especially stairs. When it reaches to the wheel is a problem that can not drive or can not move because the wheel can not ride or climb over the obstacles.

Accordingly, the present invention has been invented to solve such a problem, and an object of the present invention is to provide a driving device that can be driven in a step-wise manner when crossing a relatively high obstacle or stairs to climb over the obstacle or climb the stairs.

It is another object of the present invention to provide a driving device in which the wheel can be driven in a step manner when a load of a predetermined size or more is applied to the wheel.

1 is a schematic view showing a conventional general means of transportation.

Figure 2 is a perspective view schematically showing an application state of the drive device of the present invention.

Figure 3 is a block diagram showing a half of the drive device according to an embodiment of the present invention.

4 is a partial side view showing in detail the assembled state and the driving state of the first power transmission device and the second power transmission device of the drive device of FIG.

5 is a block diagram showing a coupling state and a driving state of the third power transmission device and the fourth power transmission device of the driving apparatus according to another embodiment of the present invention.

Figure 6a and 6b is a side view showing the outer configuration of the drive apparatus according to another embodiment of the present invention.

7A to 7B are side views showing an operating state of a drive device according to each embodiment of the present invention.

8 is a block diagram showing a driving apparatus according to another embodiment of the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

10: body 12: power generating device

14: spindle 16: the first power train

24: carrier device 30: second power transmission device

38: axis frame 42: casing

44: third power train 46: fourth power train

76: brake device 84,88: sprocket

95: fifth power train 97: sixth power train

Such objects include a drive device capable of climbing a stairway over an obstacle, the power generating device of which a main shaft is rotatably connected; And a sun gear fixed to the main shaft of the power generating device, a plurality of planetary gears geared to the circumference of the sun gear, and ring gears geared to the respective planetary gears, wherein the planetary gear is rotated according to the load. An idling first power transmission device; A carrier device having a body extrapolated to a main shaft of the power generating device, a plurality of support shafts on which the respective planetary gears are rotatably mounted, and configured to rotate when the planetary gears revolve; A drive gear meshed with an outer side of a ring gear of the first power transmission device, a drive shaft fixed to a central axis of the drive gear, a power transmission gear fixed to the other end of the drive shaft, and rotatably supported by the drive shaft A second power transmission device having a fixed gear which is engaged with the body of the carrier device at one end thereof, the main frame serving as a central axis during the step operation, and a casing fixed to the other end of the main frame; A third power transmission device built in the casing, coupled to a second power transmission device, for transmitting power to the first wheel in the same direction as the rotation direction of the main shaft; And a fourth power transmission device built in the casing, coupled to the second power transmission device, and configured to transfer power to the second wheel in the same direction as the rotational direction of the main shaft. have.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings, and only half of the driving device are shown in detail for clarity. In addition, the directional terms indicated in the following description are only terms set when the front view of the accompanying drawings illustrating the present invention by way of example only, and those skilled in the art, the present invention is not limited by such directional terms Will be understood clearly.

First, as shown in Figs. 2, 3 and 4, the drive device according to the present invention as described above the vehicle body 10 that may include a vehicle body of various means of transportation, such as passenger cars, commercial vehicles, vehicles, wheelchairs, etc. It is installed in). Of course, the vehicle body 10 is equipped with a power generator 12, such as a general combustion engine or electric motor, and the power generator includes a main shaft 14, such as an axle shaft.

The main shaft 14 includes a first power transmission device 16 for transmitting power by rotating in accordance with its driving. The first power transmission device 16 is preferably formed of a sun and planet gear, which is basically geared to the sun gear 18 fixed to the main shaft 14 and to the circumference of the sun gear 18. A plurality of planetary gears 20, and the other sun gear, that is, the ring gear 22 is geared to the gears around the planetary gear 20. Here, the plurality of planetary gears 20 are installed to rotate or revolve according to the load according to the rotation of the sun gear 18, and the ring gear 22 is preferably formed on both the inner surface and the outer surface.

The first power transmission device 16 is provided with a carrier device 24. The carrier device 24 has a body 26 which is extrapolated so as not to contact the main shaft 14 and having teeth formed on the outer circumference thereof. The body 26 includes a plurality of support shafts 28 to which each planetary gear 20 is idlely connected by a bearing.

In addition, the second power transmission device 30 is operatively installed in the first power transmission device 16. The second power transmission device 30 includes a drive gear 32 engaged with an outer side of the ring gear 22 of the first power transmission device 16, and a drive shaft 34 fixed to the central axis of the drive gear 32. ) And a power transmission gear 36 fixed to the other end of the drive shaft. Then, the outer side of the drive shaft 34 is supported by a bearing so as to be rotatable to the drive shaft 34, the cylindrical base frame 38, which serves as a central axis during the step operation is extrapolated. In addition, one end of the main frame 38 is provided with a fixed gear 40 to be engaged with the outer side of the body 26 of the carrier device 24. In addition, the second power transmission device 30 is provided with a casing 42 having a sufficient accommodation space therein.

Inside the casing 42, a third power transmission device 44 and a fourth power transmission device 46 are operatively installed. Here, the third power transmission device 44 is gear-coupled to the power transmission gear 36 of the second power transmission device 30 and rotatably fixed to the fixed shaft 48 fixed to the power transmission casing 42. A second gear 54 rotatably fixed to the first gear 50, the first gear 50, and rotatably fixed to a fixed shaft 52 fixed to the power transmission casing 42; And a third gear 58 which is geared to the 54 and fixed to the rotating shaft 56 rotatably fixed to the casing 42.

In addition, the fourth power transmission device 46 provided inside the power transmission casing 42 is installed corresponding to the third power transmission device 44. That is, the fourth power transmission device 46 is gearably coupled to the power transmission gear 36 of the second power transmission device 30 and rotatably fixed to the fixed shaft 60 fixed to the power transmission casing 42. A second gear 66 rotatably fixed to the first gear 62, the first gear 62, and rotatably fixed to a fixed shaft 64 fixed to the power transmission casing 42; And a third gear 70 which is geared to the 66 and fixed to the rotation shaft 66 rotatably fixed to the casing 42.

In addition, the first wheel 72 is fixed to the rotation shaft 56 of the third gear 58 to the third power transmission device 44, and the second wheel 74 is similarly to the fourth power transmission device 46. It is fixed to the rotation shaft 68 of the third gear 70 can be driven on the ground or stairs. Each of these wheels 72 and 74 may take a variety of shapes depending on the application of the vehicle body to which it is applied.

Optionally, the drive device according to the present invention includes a brake device 76 for arbitrarily converting the rotational drive of the drive device to a step drive or adjusting the ground height of the vehicle body, and a casing fixing device that can be installed on a cover to be described later. It is preferably installed in conjunction with (not shown). The brake device 76 is provided with a rotating shaft and controllable by an operator or a driver, and is interlocked with the handle 78 and gear-coupled to the ring gear 22 of the first power transmission device 16. A braking gear 80 is provided.

Of course, the first power transmission device 16, the carrier device 24, the second power transmission device 30 is shielded from the outside by the cover 82 can be prevented from injury as well as its own protection.

Referring to Figure 5, there is shown a coupling or assembly structure of the third power transmission device and the fourth power transmission device of the drive apparatus according to another embodiment of the present invention. That is, the third power transmission device 44 embedded in the casing 42 is geared to the power transmission gear 36 of the second power transmission device 30 and is rotatably fixed to the casing 42. (84) and a second sprocket (88) connected to the first sprocket (84) by a chain (86), rotatably fixed to the casing (42) by a rotating shaft, and provided with a first wheel (72). do.

In addition, the fourth power transmission device 46 is geared to the power transmission gear 36 of the second power transmission device 30 similarly to the third power transmission device 44 and rotatably fixed to the casing 42. The second sprocket 94, which is connected to the first sprocket 90 and the first sprocket 90 by a chain 92, is rotatably fixed to the casing 42 by a rotating shaft, and the second wheel 74 is installed. ).

On the other hand, as shown in Figure 6a, another driving device according to the present invention may further be provided with a fifth power transmission device 95 may be mounted to the third wheel (96). Of course, the fifth power transmission device has a configuration similar to that of the third power transmission device 44 and the fourth power transmission device 46 as well as the third, fourth and fifth power transmission devices 44,46,95. Is installed at an angle of 120 ° to the second power transmission device 30.

In addition, as shown in FIG. 6B, another driving device according to the present invention may further include a sixth power transmission device 97 so that the fourth wheel 98 may be mounted. Of course, the sixth power transmission device 97 faces the fifth power transmission device 95 so that the third, fourth, fifth and sixth power transmission devices 44, 46, 95, and 97 are second power. It is installed at an angle of 90 ° with respect to the delivery device 30.

Optionally, according to the driving device according to another embodiment of the present invention shown in FIG. 8, the planetary carrier device 24 to which the plurality of support shafts 28 on which each planetary gear 20 is rotatably fixed is fixed. ) Sprockets 23 are formed instead of the gears, and the sprockets 25 are mounted on the main frame 38 instead of the fixed gears. Each of these sprockets 23, 25 is connected by a chain 27 and interlocked with each other. In addition, two sprockets 37 and 39 are mounted at the end of the drive shaft 34 instead of the power transmission gear 36, and correspondingly to the chain 41 at the rotary shaft 56 on which the first wheel 72 is mounted. The sprocket 43 connected to the sprocket 37 is mounted, and the sprocket 47 connected to the sprocket 39 by the chain 45 is mounted on the rotary shaft 68 on which the second wheel 74 is mounted. In this case, unlike the embodiments illustrated in FIGS. 3 and 5, various components installed in the casing 42 may be omitted, and according to such a configuration, the rotation direction of the drive shaft 34 may be changed without changing. The wheels 72 and 74 may be rotated in the same direction by being transmitted to the rotation shaft.

Hereinafter, the operation of the driving apparatus according to the present invention and its operation mode will be described.

First, when a vehicle equipped with a drive device according to the present invention passes through a flat or low obstacle, for example, when the power generator 12 such as a motor is operated, the sun gear 18 mounted on the main shaft 14 is counterclockwise. The planetary gear 20 is rotated, and the planetary gears 20 engaged with the sun gear 18 are self-rotating, that is, rotated clockwise, so that the ring gear 22 is rotated clockwise. When the ring gear 22 rotates as described above, the drive gear 32, the drive shaft 34, and the power transmission gear 36 meshed with the ring gear 22 rotate in the counterclockwise direction. Thereafter, the first to third gears (50, 54, 58) of the third power transmission device 44 that is continuously engaged with the power transmission gear 36, and the first to third of the fourth power transmission device (46). As the third gears 62, 66 and 70 are rotated clockwise or counterclockwise in association with each other, the wheels 72, which are provided on the rotary shafts as the rotary shafts 56 and 68 of the respective power transmission units are rotated, 74 is rotated to move or drive the vehicle. In this case, the condition in which the vehicle moves forward may be limited to a range in which the planetary gears can sufficiently rotate since the load of idle of the carrier device is greater than that of the planetary gears.

During the movement of such a vehicle, for example, a relatively high obstacle or a stairway encounters the wheel 72 and stops, but the power generator 12 continues to operate so that the drive shaft 14 is rotated, while the ring gear 22 ) Is the momentary stop or restraining force transmitted through the third power transmission device 44 and the second power transmission device 30 is momentarily stopped, the load force applied to the ring gear 22 is planetary As the gears 20 become larger than the force to rotate, the respective planetary gears 20 revolve in the direction of the arrow A. When the planetary gear 20 revolves, the body 26 of the carrier device 24 connected to the planetary gear 20 rotates counterclockwise, and a second power transmission device engaged with the body 26 is formed. The fixed gear 40 of the 30 is rotated in the clockwise direction, as well as the axis frame 38 to which the fixed gear 40 is fixed also rotates in the same direction. As such, when the main frame 38 is rotated, the casing 42 integrally fixed to the main frame 38 is centered on the first wheel 72 or the rotating shaft 56 on which the wheel 72 is mounted. By rotating to the second wheel 74 is to step forward beyond the first wheel 72 will be able to cross the obstacle by the step operation. Of course, when the step is reached, the above-described step operation is repeatedly performed so that the main frame 38 and the casing 42 are continuously rotated so that the first wheel 72 and the second wheel 74 alternately cross each other. You can climb the stairs by moving to.

On the other hand, when the vehicle normally moves on a flat surface, as shown in FIG. 7A, both the first wheel 72 and the second wheel 74 are in contact with the ground, and the garage is maintained at the lowest level. When the driver tries to raise the garage in such a state, the driver operates the handle 78 of the brake device 76 to apply a braking force to the brake gear 80 to stop the ring engaged with the brake gear 80. The gear 22 comes to a stop. When the ring gear 22 is stopped, the step operation is performed as described above. That is, when the ring gear 22 stops, the planetary gear 20 revolves in the direction of the arrow A, the body 26 of the carrier device 24 rotates counterclockwise, and the fixed gear 40 Is rotated clockwise as well as the axis frame 38 is also rotated in the same direction. At this time, the driver brakes when the garage is at a predetermined height, that is, the drive shaft 34 and the main frame 38 are rotated at an angle with respect to the rotary shaft 56 on which the first wheel 72 is mounted. By controlling and releasing the device 76 and simultaneously securing the casing 42 with a fixture, not shown, only the first wheel 72 is in contact with the ground and the second power train 30 is shown in FIG. 7B. As the drive shaft 34 and the casing 42 are moved upward and maintained, the garage can be kept high. In addition, since only one wheel may be driven in contact with the ground as described above, steering of the driving device or the vehicle may be facilitated.

6A and 6B, if the fifth power transmission device 95 or the fifth power transmission device 95 and the sixth power transmission device 97 are additionally installed, the third wheel ( 96 or the third wheel 96 and the fourth wheel 98 may also be controlled as shown in Figs. 7B and 7C to perform a predetermined drive.

On the other hand, when the vehicle equipped with the driving device as shown in FIG. 8 drives a horizontal region, the rotational force transmitted from the main shaft 14 to the driving shaft 34 is directly applied to each sprocket 37 and 39 and each chain ( 41 and 45 and respective sprockets 43 and 47 are transmitted to respective rotation shafts 56 and 68 to drive wheels 72 and 74. On the other hand, during step driving, the sprocket 23 of the carrier device 24 and the sprocket 25 of the main frame 38 are linked by the chain 27 to perform the step driving as described above. Such a driving method may be suitably applied to a moving means that requires relatively little power, such as a wheelchair.

In the above-described embodiment, only the case in which the vehicle moves forward has been described. However, when the power generator is reversely rotated, the operation as described above is reversed so that the vehicle is reversed and the step operation backward can be performed.

In addition, if the drive device is installed in connection with the drive shaft of the front wheel, the wheel can be used as a steering wheel, while in connection with the drive shaft of the rear wheel can be provided for saving fuel and speed of running. Of course, it can be installed in conjunction with the driving device on both the front and rear wheel drive shaft.

As described above, when the driving device according to the present invention is installed in a moving means such as a vehicle, a wheelchair, a transport vehicle, and the like, if the vehicle is caught by an obstacle during the movement of the vehicle, the driving device as well as the rotational driving of the wheel may be converted into a step driving to overcome the obstacle. When the stairs are reached, the step is driven continuously to climb the stairs, thereby improving convenience.

In addition, it is possible to freely adjust the height of the vehicle by using the brake device addressed to the driving device, so that the vehicle can be used for various purposes and there is an advantage of improving stability.

While a preferred embodiment according to the present invention has been described above, it will be understood by those skilled in the art that various modifications and changes can be made without departing from the scope of the appended claims.

Claims (7)

In a drive that can climb stairs and climb obstacles, A power generator 12 to which the main shaft 14 is rotatably connected; A sun gear 18 fixed to the main shaft 14 of the power generator 12, a plurality of planetary gears 20 geared to the circumference of the sun gear 18, and each of the planetary gears 20, respectively. A gear gear coupled to the gear, and the planetary gear 20 includes: a first power transmission device 16 capable of rotating and revolving according to a load; A body 26 extrapolated to the main shaft 14 of the power generator 12 and a plurality of support shafts 28 on which the respective planetary gears 20 are rotatably mounted. A carrier device 24 configured to rotate when idle; A drive gear 32 engaged with an outer side of the ring gear 22 of the first power transmission device 16, a drive shaft 34 fixed to the central axis of the drive gear 32, and the other end of the drive shaft; A fixed power transmission gear 36 and a fixed gear 40 rotatably supported on the drive shaft 34 and engaged with the body 26 of the carrier device 24 are installed at one end thereof. A second power transmission device including a main frame 38 serving as an axis and a casing 42 fixed to the other end of the main frame 38; A third power transmission device built in the casing 42 and coupled to the second power transmission device 30 and transmitting power to the first wheel 72 in the same direction as the rotation direction of the main shaft 14 ( 44); And A fourth power transmission device installed in the casing 42 and coupled to the second power transmission device 30 and transmitting power to the second wheel 74 in the same direction as the rotation direction of the main shaft 14. 46, a drive device comprising a. The method of claim 1, wherein the third power transmission device 44 is geared to the power transmission gear 36 of the second power transmission device 30 and rotated on a fixed shaft 48 fixed to the casing (42). A first gear 50 which is securely fixed, a second gear 54 which is geared to the first gear 50 and rotatably fixed to a fixed shaft 52 fixed to the casing 42; A third gear 58 geared to the second gear 54, rotatably fixed to the casing 42, and fixed to the rotation shaft 56 on which the first wheel 72 is mounted; The fourth power transmission device 46 is gearably coupled to the power transmission gear 36 of the second power transmission device 30 and rotatably fixed to a fixed shaft 60 fixed to the power transmission casing 42. A second gear 66 rotatably fixed to the first gear 62, the first gear 62 and the fixed shaft 64 fixed to the power transmission casing 42, and the second gear ( And a third gear (70) geared to the casing (42), rotatably fixed to the casing (42), and fixed to the rotating shaft (68) on which the second wheel (74) is mounted. The first sprocket 84 of claim 1, wherein the third power transmission device 44 is geared to the power transmission gear 36 of the second power transmission device 30 and rotatably fixed to the casing 42. And a second sprocket 88 connected to the first sprocket 84 by a chain 86 and rotatably fixed to the casing 42 by a rotating shaft, and having a first wheel 72 installed thereon. ; Like the third power transmission device 44, the fourth power transmission device 46 is gear-coupled to the power transmission gear 36 of the second power transmission device 30 and rotatably fixed to the casing 42. The second sprocket 94 is connected to the first sprocket 90 and the first sprocket 90 by a chain 92 and is rotatably fixed to the casing 42 by a rotating shaft, and the first wheel 72 is installed. A drive device comprising: a. 4. The brake device as claimed in any one of claims 1 to 3, further comprising a brake device (76) associated with a casing fixing device for converting the rotational drive of the drive device into a step drive or adjusting the ground clearance of the vehicle body. The device is connected to the operating lever 78 and the operating lever 78, the braking is geared to the ring gear 22 of the first power transmission device 16 for applying the braking force to the ring gear 22 Drive device comprising a gear (80). 4. The device as claimed in any one of claims 1 to 3, configured identically to the third power transmission device 44 and the fourth power transmission device 46, and crossing over with the first and second wheels 72, 74. And a fifth power transmission device 95 to which the third wheel 96 is mounted so that the third, fourth, and fifth power transmission devices 44, 46, and 95 are second power transmission devices ( 30) the drive device characterized in that installed at an angle of 120. 6. The first wheel, the second wheel, and the third wheel of claim 5, wherein the third power transmission device 44, the fourth power transmission device 46, and the fifth power transmission device 95 are configured in the same manner. And a sixth power transmission device (97) mounted with a fourth wheel (98) so as to cross over (72, 74, 96). The third, fourth, fifth and sixth power transmission devices ( 44, 46, 95, 97 is a drive device, characterized in that installed at an angle of 90 ° to the second power transmission device (30). A sprocket (23) is formed in the carrier device (24), and a sprocket (25) interlocked with the sprocket (23) by a chain (27) is formed in the main frame (38); Two sprockets (37; 39) are formed at the end of the drive shaft (34), and the sprocket (37) is connected to the sprocket (37) by a chain (41) on the rotating shaft (56) on which the first wheel (72) is mounted. 43 is formed, the sprocket 47 is connected to the sprocket 39 by the chain 45 is formed on the rotary shaft 68, the second wheel 74 is mounted, each of the sprockets 37, 39 , 43 and 47 are rotated in the same direction as the drive shaft (34).