KR200219658Y1 - A transmission for a wheelchair - Google Patents

Abstract

The present invention is to maximize the convenience of using the wheelchair by providing an electric wheelchair that can be used manually with respect to the wheelchair (WHEELCHAIR), the acceleration and deceleration connected to the drive motor (8,8 ') in the case ( 9, 9 ') are connected to circuits with the contact heads (10, 10'), the driving motors (8, 8 '), the motor control circuit (11), and the battery (13) for rotating the wheels (2). Composed of a direction adjuster 12 for adjusting the drive device 5, the drive device 5 for driving the wheelchair 1, the case 7 of the drive device 5 is coupled to the frame of the wheelchair ( 4) Lockers elastically coupled with springs 22 and 23 in the fixing clip 18 to which the locking projections 19 and 19 'are caught and released from the locking holes 17 and 17' of the fixing portion 15 fixed to the 4). (21) Springs on the handles 20 and the locking projections 19 and 19 'which are elastically supported to the outside and released from the locking holes 17 and 17' of the fixing part 15 by the pulling operation of the handle 20. (32) push operation of the push button (31) is elastically installed Pull the locker 21 and the engaging projections 19 and 19 'to pull the pulleys 24 and the handle 20 apart from the wheels 2 so as to separate the contact heads 10 and 10' from the wheels 2; As a stopper 28a connected by the button 31 and the pull string 30, the latch 28 is configured to control the operation of the handle 20, and is composed of a switching device 6 that selects and switches between manual and electric.

Description

Wheelchair powertrain {A TRANSMISSION FOR A WHEELCHAIR}

The present invention relates to a wheelchair (WHEELCHAIR), the feature of the present invention is to provide an electric wheelchair that can be used manually to maximize the convenience of wheelchair use.

In general, the wheelchair has a ring-shaped handle wheel formed on both sides of the outer wheel, so that it can be rolled by hand to move the wheelchair.

Such a conventional wheelchair has no problem in moving the wheelchair by rolling the handle wheel by hand, but it is more convenient for users and electric motors for users who may have considerable burden and inconvenience in moving the wheelchair by manually rolling the handle wheel. A number of electric wheelchairs that can be used to drive a wheelchair by using a number have been carried out in the past.

However, the existing electric wheelchair has a complicated configuration and a very heavy weight, so the use environment of the physically handicapped person is greatly limited, and the electric wheelchair is configured only for the electric motor. By weight, manual use was almost impossible.

The present invention is to provide an electric wheelchair with a simple configuration and convenient usability, in particular, by configuring the weight of the electric device to a very light weight, so that the inconvenience of use does not occur due to the weight of the electric device during manual use, combined with manual and To provide a new configuration of the electric wheelchair that can be used very conveniently.

1 is a perspective view of a wheelchair applied to an embodiment of the present invention

2 is a main configuration diagram of the present invention

3 is a rear view of the installation state of the present invention

4 is an exploded perspective view of the main part of the present invention

5 is a side view of the working state of the present invention

6 is a cross-sectional view of the working state of the present invention

7 is a cross-sectional view of the main part of the present invention

☞ Explanation of symbols used in the main part of the drawing ☜

1; wheelchair 2; wheel

3; handle wheel 4; frame

5; driving device 6; switching device

7; case 8,8 '; drive motor

9,9 '; Accelerator 10,10'; Tight head

11; motor control circuit 12; direction controller

13; battery 14; coupling means

15; fixed 16;

17,17 '; Job hole 18; retaining clip

19,19 '; Jump 20; Handle

21; locker 22, 23; spring

24; pull line 25; return spring

26; shaft pin 27; rotating part

28; RATCHET 29; Guide Roller

30; pull string 31; push button

32; spring 33; link

34; shaft pin 35; rotating plate

36; retaining groove 37; retaining pin

38; locking screw

1 is a perspective view of a wheelchair applied to an embodiment of the present invention, Figure 2 is a main configuration of the present invention, Figure 3 is a rear view of the installation state of the present invention,

In a general wheelchair 1, in which wheels 2 are installed at both sides and handle wheels 3 are coupled to the outside of wheels 2 so that the wheels 2 can be turned by hand,

The present invention is installed in close contact with the wheel 2 on the wheelchair 1, the drive device 5 for driving the rotation of the wheel 2, the drive device 5 is combined with the switching device 6, the wheelchair 1 as a switching device 6, manually and electrically It is characterized by the selection and use,

Looking at the configuration of the present invention in detail as follows.

As shown in FIG. 2, the drive device 5 includes drive motors 8 and 8 ', which are connected to the battery 13 (mainly 12V batteries for automobiles), on both sides, as shown in FIG. 9 'and axially couple the contact heads 10 and 10' to the outside of the case 7 on both side accelerators 9 and 9, respectively.

The drive motors 8 and 8 'are connected to the battery control circuit 11 and the motor control circuit 11 connected to the direction adjuster 12 and the direction adjuster 12 is installed at a predetermined position of the wheelchair 1 to supply and cut off the power of the drive motors 8 and 8'. The drive motors 8 and 8 'are rotated forward and backward to enable direction adjustment.

In the above, the contact heads 10 and 10 'are formed in an uneven shape as a material such as rubber having excellent frictional force as shown in the example shown so as to closely contact the outer circumferential surfaces of the wheels 1 and 2 on both sides of the wheelchair 1.

In addition, the case 7 of the driving device 5 forms a coupling means 14 on one side so as to be detachably coupled to the switching device 6 fixedly installed on the frame 4 of the wheelchair 1 so that the drive device 5 can be used both electrically and manually. Looking at the configuration of the switching device 6 coupled to and coupled to both sides of the contact heads 10, 10 'of the drive device 5 from the wheel 2 of the wheelchair 1 to be combined with the electric manually.

Switching device 6 is fixed to the fixing part 15 having a coupling request 16 on both sides of the frame 4 of the wheelchair 1, as shown in Figure 4, the engaging portion is formed by the engaging holes 17, 17 'by the coupling means 14 case 7 of the drive device 5 Inserting and engaging the fixed clip 18 coupled to the locking projections 19, 19 'of the locking hole 17, 17' to engage, release the two close contact heads 10, 10 'of the drive device 5 in close contact with the wheels 2 on the wheelchair 1, By separating and enabling the wheelchair 1 to be moved by electric and manual, the configuration of the switching device 6 will be described in more detail below.

On the frame 4 of the wheelchair 1, the locking holes 17 and 17 'are fixed to the fixing portions 15 formed at both sides.

Then, the case 7 of the drive device 5 is coupled to each other by assembling with the fixed clip 18 as a coupling means 14, and inserting the engaging projections 19, 19 'of the fixed clip 18 as the handle 20 in the fixed clip 18 to the coupling request 16 of the fixed portion 15. To catch and release the locking holes 17 and 17 '.

The fixed clip 18 is a fixed clip 18 coupled to the case 7 of the driving device 5 is inserted into the coupling request 16 of the fixing portion 15 as described above, the fixed clip 18 is both sides on the inner bottom as shown in Figs. The spring 22 is elastically coupled to the lower side of the locker 21 in which the locking projections 19 and 19 'are slid to the side, and the spring 23 is also elastically coupled to the upper part so that the locking projections 19 and 19' of both sides of the locker 21 are locked by the fixing part 15 To 17 '.

And both sides of the locking projections 19, 19 'of the rocker 21 is connected to the pull string 24 is connected to the handle 20, and between the two projections 19, 19' resilient spring 25 is installed.

On the other hand, the handle 20 of the upper side of the fixed clip 18 is installed so as to be able to angular movement to the upper portion of the case 7 and the fixed clip 18 of the drive device 5 around the shaft pin 26, the rotary part 27 of the handle 20 is coupled to the shaft pin 26 in the By forming the cheat 28 and the guide roller 29 together, the latch 28 is engaged by the stopper 28a in one direction, and the guide roller 29 is connected to the pull string 30 connected to the upper portion of the inner locker 21.

In addition, a push button 31 is formed at the end of the handle 20 to selectively close and release both of the contact heads 10 and 10 'of the driving device 5 to the wheel 2.

That is, the push button 31 is coupled outwardly with the inner spring 32 at the end of the handle 20, and the push button 31 elastically coupled to the spring 32 is engaged with the end of the rotary plate 35 coupled to the shaft pin 34 as a link 33. Pressing the button 31 causes the other end of the pivoting plate 35 to axially move toward the pushing button 31 with the shaft pin 34 as the axis, and the pull strings 24 and 30 connected to the stoppers 19 and 19 'of the stopper 28a and the rocker 21 described above are respectively Connect.

On the other hand, the push button 31 in the push button elastically coupled to the fixing pin 37 so as to be elastically coupled to the fixing groove 36 inside the handle 20 during the push operation, this fixing pin 78 is to ensure that the pressing state is pressed during the push operation of the push button 31. will be.

The stopper 28a, the pull string 24, 25, and the ratchet 28 and the stopper 28a can be variously implemented by various equivalent means.

The coupling means 14 for assembling and combining the case 7 and the switching device 6 of the drive device 5 above can be adjusted to the left and right as shown in the example shown so as to be installed regardless of the type or size (width) of the wheelchair 1. After adjusting and setting it to the wheelchair 1, it can be fixed by using a locking screw 38, etc., and the contact heads 10 and 10 'at both ends of the driving device 5 are also provided on the width between the two wheels on the transmission shafts 9 and 9'. Move the left and right according to the setting, and then set it with a lock screw 38 to install it.

The present invention configured as described above is a very simple configuration to drive, adjust the wheelchair 1 to provide a very convenient usability for the wheelchair 1 user, look at the operation of the present invention through the following method.

The case 7 of the drive device 5 is engaged with the fixed clip 18 by the coupling means 14, and the fixed clip 18 is engaged with the coupling request 16 side of the fixed part 15 fixed on the frame 4 of the wheelchair 1, resulting in the drive device 5 being switched. 6 is fixed to the wheelchair 1, the direction adjuster 12 of the drive device 5 is installed in a position that can be used conveniently by the user.

In this way, when the driving device 5 is installed and the contact heads 10 and 10 'are brought into close contact with the wheels 2 and the driving motors 8 and 8' are controlled by the direction adjusters 12, the stationary ranges of the drive motors 8 and 8 'are shown in FIG. According to the rotation direction, the contact heads 10 and 10 'closely attached to the wheels 2 rotate to move the wheelchair 1.

As described above, the contact heads 10 and 10 'of the driving device 5 are controlled as the handle 20 on the upper part of the fixed clip 18 so as to be in close contact with the wheel 2, and the wheelchair 1 is selected as an electric drive or a manual drive. The device 6 is as follows.

When the pusher 31 presses the pushbutton 31, the pushbutton 31 is pushed inward to angularly rotate the pivoting plate 35 to operate the stopper 28a and the rocker 21 connected to the pull strings 28 and 24 of the stopper 28a and the rocker 21.

When the stopper 28a is pulled by the pull string 30 by the pushing operation of the pushbutton 31, the stopper 28a which is holding the latch 28 side latch 28 of the handle 20 is released to lift the handle 20 upwardly about the shaft pin 26. At the same time, as the pull string 24 of the locker 21 is pulled, as shown in FIG. 6, the locking holes 17 and 19 'are first pulled inward by the locking protrusions 19 and 19' of the two sides caught in the locking holes 17 and 17 'of the fixing unit 15. The locker 21 can be pulled upward by disengaging from 17 '.

In this way, if the handle 20 is lifted upward while pressing the push button 31, it is connected with the locker 21, and the pulling line 24 which pulls the catching protrusions 19 and 19 'inward is pulled to disassemble the catching protrusions 19 and 19' to the locker 21 side. In this state, the locker 21 is lifted upward, and accordingly, the locking protrusions 19 and 19 'which are released from the locking holes 17 and 17' are positioned inside the fixing unit 15.

Accordingly, when the locking clip 18, the locking projections 19 and 19 'are released to the upper part of the fixing part 15, as a result, the entire case 7 of the driving device 5 coupled with the fixing clip 18 is slightly lifted upwards, and thus the two close contact heads are raised. 10,10 'away from the wheel 2, the user can move by using the handle wheel 3 by hand, that is to switch to the manual state.

If the handle 20 is returned to its original position, the ratchet 28 returns to the original position while overcoming the stopper 28a. Accordingly, the pull string 24 of the rocker 21 is also returned, and the locker 21 is lowered. When the locking projections 19 and 19 'reach the positions of the locking holes 17 and 17' of the fixing portion 15 by lowering to some extent, the locking projections 19 and 19 'are resilient by the restoring force of the return spring 25 elastically installed between the two locking projections 19 and 19'. It is fixed outwardly on the locking hole 17 and 17 'side, and the case 7 of the driving device 5 is fixed downward so that the contact heads 10 and 10' closely adhere to the wheels 2 as before. Wheelchair 1 can be driven and moved.

As described above, the present invention provides a wheelchair 1 that can be used by both manual and electric motors with a relatively simple configuration and convenient usability, thereby providing an advantage in the life of the wheelchair 1 user, in particular, driving for electric driving. Since the configuration of the device 5 has a compact and lightweight structure, it does not significantly change the overall weight of the wheelchair 1 even when used manually, so that no problem occurs even when the manual selection is used. 1 Many benefits and effects can be expected such as contributing to the user's convenience of life and the efficiency of wheelchair 1 use.

Claims (1)

In constructing the electric wheelchair 1, It is composed of a driving device 5 installed on the wheelchair 1 to drive the wheelchair 1, and a switching device 6 to fix the driving device 5 to the wheelchair 1 to switch between manual and electric. The driving device 5 is coupled to the acceleration / deceleration gears 9 and 9 'connected to the driving motors 8 and 8' on both sides of the case 7, and the contact heads 10 and 10 'for driving the wheels 2 and the driving motors 8 and 8' and the motor. It consists of a direction regulator 12 that is connected to the control circuit 11, the battery 13 and adjusts the drive unit 5, The shifting device 6 is coupled to the case 7 of the driving device 5 by the coupling means 14, the locking projections 19, 19 'of the locking holes 17, 17' of the fixing portion 15 fixed to the frame 4 of the wheelchair 1 is fixed, released The clip 18 and the locker 21 elastically coupled to the springs 22 and 23 up and down inside the fixing clip 18 and pulled upwards by the handle 20, and are supported on both sides of the locker 21 to be locked by the locking holes 17 and 17 '. It is connected to the locking projections 19 and 19 'to be released and the push button 31 elastically installed by the spring 32 on the handle 20, and the locker 21 is pulled together with the locking projections 19 and 19' by the pressing operation. A transmission device for a wheelchair, comprising: a pull string 24 separating the 10 'from the wheel 2, and a ratchet 28 for controlling the operation of the handle 20 by a stopper 28a connected to the push button 31 and the pull string 30 of the handle 20. .