TWI510229B - Climbing auxiliary device - Google Patents

Description

Climbing aid

The invention relates to an auxiliary device, in particular to a climbing aid.

1 and 2 show a conventional ladder assisting device 1 installed in a wheelchair (not shown) and capable of assisting the wheelchair to climb from the ground 21 to a step 22 and including a frame 11, A transmission unit 12 and a climbing unit 13.

The transmission unit 12 includes an inner transmission shaft 121 rotatably disposed horizontally relative to the frame 11 to the frame 11, and two transmission assemblies 122 respectively disposed at two ends of the inner transmission shaft 121. Each of the transmission assemblies 122 has a pivot post 123 parallel to the inner drive shaft 121 and spaced apart from each other, an outer drive shaft 124 and a shaft 125, and a radial extension from the inner drive shaft 121 to the pivot post An inner transmission arm 126 of 123, a middle transmission arm 127 extending radially from the pivot post 123 to the outer transmission shaft 124, and an outer transmission arm extending radially from the outer transmission shaft 124 to the rotating shaft 125 128. The inner and middle transmission arms 126 and 127 are opposite to each other, and the pivot shaft 125 and the pivot post 123 are respectively located on opposite sides of the outer transmission shaft 124. The climbing unit 13 includes two foot bars 131 respectively pivotally connected to the pivoting posts 123, and two respectively opposite The frame 11 is rotatably mounted on the rollers 132 of the rotating shaft 125, and each of the legs 131 is located between the inner and middle transmission arms 126 and 127.

Referring to Figures 2 and 3, the inner transmission arm 126 is rotatable relative to the frame 11 between a raised position and a climbing position. When the inner transmission arm 126 is in the raised position, the foot 131 can be pressed against the ground. The transmission assembly 122 is pivoted by the pivot post 123 to drive the frame 11 and the roller 132 away from the ground. When the inner transmission arm 126 is located in the climbing position, the roller 132 is located on the step 22, and the transmission assembly 122 is pivoted with the center of the roller 132 to drive the frame 11 and the foot bar 131 away from the ground. The action of climbing the ladder.

However, the transmission assembly 122 of the ladder assisting device has a complicated structure, a large number of manufacturing steps, and many components, resulting in a high manufacturing cost. On the other hand, the transmission assembly 122 has many components, and there are many joints between the components and the components, which increases the chance of damage after long-term use, resulting in a lack of durability. In addition, the inner, middle and outer transmission arms 126, 127, 128 do not coincide in the axial position, and the complex components such as the pivot post 123 are overlapped, occupying a large space in the axial direction. Making the device larger in size requires a large space.

Accordingly, it is an object of the present invention to provide a climbing assist device that is relatively simple in construction and that is more practical.

Therefore, the climbing assisting device of the present invention is applicable to climbing a ladder, and the climbing assisting device comprises a body unit, a driving unit, a limiting unit, and a climbing unit.

The frame unit includes a frame and a pair of moving wheels rotatably disposed on the frame.

The driving unit includes a driving motor disposed between the frame and interposed between the moving wheels, an output shaft connected to the driving motor and driven by the driving motor to rotate with an axis as an axis, and a pair The cranks respectively disposed at opposite ends of the output shaft, each of the cranks has a set of axial ends disposed on the wheel shaft and a swing end away from the shaft end.

The limit units are disposed in the frame.

The climbing unit includes a pair of the swinging ends respectively connected to the cranks and the legs of the limiting unit, each of the legs has an abutting section capable of abutting the step, and a first pivot a connecting portion, a second pivoting portion and the swinging end of one of the cranks, and a driving segment pivotally connected to the limiting unit.

Wherein, the driving motor can drive the output shaft to rotate, and the cranks are coupled to drive the pedals to swing, so that the connecting portions of the pedals can climb the step.

The effect of the invention is that the output shaft of the driving unit can simultaneously drive the cranks at opposite ends, and the design cooperation of the rods is connected by the limiting unit to limit and link the legs. The swing mode of the rod reaches the climbing action. Thus, the present invention greatly reduces the complicated component bonding structure, so that the overall volume can be effectively reduced, the component damage can be reduced, and the utility can be increased.

200‧‧‧ ladder

25‧‧‧ front wheel

201‧‧‧Ladder

3‧‧‧Drive unit

2‧‧‧ Body unit

31‧‧‧Drive motor

21‧‧‧Frame

32‧‧‧ Output shaft

211‧‧‧ board body

33‧‧‧ crank

212‧‧‧Motor mount

331‧‧‧Axis

213‧‧‧ elbow

332‧‧‧Swing end

22‧‧‧ moving wheels

4‧‧‧Limited unit

23‧‧‧Hosting

41‧‧‧Limited swing arm

231‧‧‧ Chair seat

42‧‧‧ chute

232‧‧‧ Backrest

43‧‧‧Limited guide wheel

24‧‧‧Haul grip group

5‧‧‧ climbing unit

241‧‧‧Connecting Block

51‧‧‧foot

242‧‧‧ casing

511‧‧‧ Receiving section

243‧‧‧Handle tube

512‧‧‧Drive segment

244‧‧‧ Controller

513‧‧‧Slip-proof foot cover

245‧‧‧ grip

L‧‧‧ axis

Other features and advantages of the present invention will be apparent from the detailed description of the preferred embodiments illustrated herein 1 is a cross-sectional view of a conventional ladder assisting device; FIG. 2 is a side view illustrating an inner transmission arm of the ladder assisting device in a raised position, in which a roller and an outer transmission arm are omitted; Is a side view showing that the inner transmission arm of the ladder assisting device is in a climbing position; FIG. 4 is a perspective view of a first preferred embodiment of the climbing assisting device of the present invention; FIG. 5 is the first comparison A partial exploded view of a preferred embodiment illustrates a body unit, a drive unit, a limit unit, and a climb unit; FIG. 6 is a partial front view of the first preferred embodiment, and the figure is not shown One of the plate bodies of the frame unit; FIG. 7 is a cross-sectional view taken from line VII-VII of FIG. 6, illustrating the frame unit, an output shaft of the drive unit, and two cranks, and the limit of the limit unit a swinging arm, and a connecting relationship between the two legs of the climbing unit; FIG. 8 is a schematic view showing the state in which the legs of the climbing unit of the first preferred embodiment are in contact with a step Figure 9 is a schematic view of the action, illustrating the first preferred For example, the leg of the climbing unit abuts the step and climbs upward with the leg as a support point; FIG. 10 is a schematic view showing the frame of the first preferred embodiment. The second moving wheel of the unit abuts the state of the step; and FIG. 11 is a partial exploded perspective view of the second preferred embodiment of the climbing assisting device of the present invention, illustrating the two chutes of the limiting unit, and the second limit Position guide wheel.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 4, FIG. 5, FIG. 6, and FIG. 7, a first preferred embodiment of the climbing assisting device of the present invention is suitable for towing on the ground and can also be climbed from the ground by a step 200. The 200 has a plurality of ladders 201. The climbing assisting device comprises a body unit 2, a driving unit 3, a limiting unit 4, and a climbing unit 5.

The frame unit 2 includes a frame 21, a pair of moving wheels 22 respectively rotatably disposed on opposite sides of the frame 21, a carrier 23 disposed above the frame 21, and a frame attached to the frame 21 and away from The frame 21 extends and is located at the rear of the carrier 23, and a pair of trailing pulleys 25 respectively spaced apart from the bottom side of the frame 21 and corresponding to the moving wheels 22.

The frame 21 has two plate bodies 211 which are respectively spaced apart and provided for the moving wheels 22, a motor fixing base 212 connected between the plate bodies 211 for the driving motor 31, and a pair of branches The outer side of the plate body 211 is slightly U-shaped and has an elbow 213 for the carrier 23 .

The carrier 23 has a seat portion 231 disposed on the elbows 213 and a backrest portion 232 coupled to the mop grip group 24. Thereby, in order to facilitate the ride of the person, of course, the carrier 23 can also be used to carry the article.

The drag grip set 24 has a connection to the board body 211 A connecting seat 241 located between the motor mounting base 212 and a sleeve 242 extending from the connecting seat 241 and extending for the backrest portion 232 is movably inserted into the sleeve 242 a handle inner tube 243, a controller 244 disposed at a top end of the handle inner tube 243 and electrically connected to the driving unit 3, and a pair respectively disposed at opposite ends of the controller 244 for an operator (not shown) ) grip 245.

The driving unit 3 includes a driving motor 31 disposed between the moving wheel 22 and electrically connected to the controller 244, connected to the driving motor 31 and driven by the driving motor 31. An output shaft 32 that rotates about the axis L and a pair of cranks 33 that are respectively disposed at opposite ends of the output shaft 32.

Each of the cranks 33 has a shaft end 331 disposed on the wheel shaft and a swing end 332 away from the shaft end 331. The drive motor 31 is controlled by the controller 244 to enable the output shaft 32 to rotate forward and reverse, and thereby drive the cranks 33 to generate swings in different directions.

The limiting units 4 are respectively disposed on the frame 21 and on opposite sides of the driving motor 31. In the first preferred embodiment, the limiting unit 4 includes two limits that are pivotably disposed between the board body 211 and the motor holder 212 and are located on opposite sides of the driving motor 31. Positioning arm 41. Of course, the limit swing arms 41 can also be designed to be connected to each other in a one-piece design, and should not be limited by the disclosure of the first preferred embodiment.

The climbing unit 5 includes a pair of the swinging ends 332 respectively connected to the cranks 33 and the foot rods 51 of the limiting unit 4.

Each of the legs 51 has an abutting portion 511 that can be coupled to the step 200, and a swinging end 332 of the first pivoting portion A, a second pivoting portion B and one of the cranks 33, respectively. A driving section 512 pivotally connected to the limit swing arm 41. The abutting portion 511 of each leg 51 has a semi-circular shape and has a non-slip foot cover 513 pivoted at one end of the abutting portion 511. With the semicircular design, the foot bar 51 can effectively climb from one of the step faces 201 to the other step surface 201 under the action of swinging. The anti-slip foot cover 513 is made of a rubber material, and can effectively increase the frictional contact between the foot bar 51 and the step 200 to avoid sliding.

Referring to FIG. 8, FIG. 9, and FIG. 10, in operation, the operator (not shown) is after holding the grips 245 by both hands, and then dragging the present invention to let the moving wheels 22 first in the ladder. After one of the steps 201 moves, the controller 244 is used to control the drive motor 31 to be able to drive the output shaft 32 (see FIG. 7) to rotate. At this time, the forward rotation is first generated, so as to be linked. The cranks 33 in turn drive the pedals 51 to swing, so that the abutting segments 511 of the pedals 51 can climb to the other step 201 of the step 200, as shown in FIG. When the anti-slip feet 513 of the legs 51 are used as support points, the drive motor 31 continues to drive the output shaft 32 (see FIG. 7) to rotate forward to link the frame unit 2 upwards. The swinging, as shown in FIG. 9, until the moving wheels 22 are again connected to the step 201, as shown in FIG. 10, thus completing a climbing action. Then, the drive motor 31 is reversed again, that is, the legs 51 can be re-connected to the state before the next step to be climbed, and the operation is repeated. Because the present invention uses the drive motor 31 to drive the output shaft 32 (see FIG. 7) to rotate to interlock The cranks 33 are matched with the design of the limit swing arms 41 to interlock the pedals 51 to perform a swinging motion with a fixed trajectory. Compared with the prior art, the present invention utilizes only the output shaft 32 (see FIG. 7), the cranks 33, the limit swing arms 41, and the links of the legs 51, which are structurally connected. It is extremely simple, and because of the small number of components, it can effectively reduce the overall volume and reduce the possibility of component damage, so it is extremely practical.

Referring to FIG. 11, a second preferred embodiment of the climbing assist device of the present invention is substantially the same as the first preferred embodiment, and the difference is:

The limiting unit 4 has two sliding slots 42 respectively formed on one side of the board body 211 and opposite to the driving motor 31, and two movably disposed in the sliding slots 42 and connected to the corresponding slots The limit guides 43 at one end of the drive segments 512. By this design, the same effect as the first preferred embodiment can be achieved.

In summary, the climbing assist device of the present invention has the following advantages and effects:

The output shaft 32 of the driving unit 3 can simultaneously drive the cranks 33 at opposite ends of the driving unit 3, and the design cooperation of the rods 51 is connected by the limiting unit 4 to limit and interlock the rods. The swing mode of 51 reaches the climbing action. Thus, the present invention greatly reduces the complicated component bonding structure, so that the overall volume can be effectively reduced, the component damage can be reduced, and the utility of the present invention can be increased.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto. The simple equivalent changes and modifications made by the patent scope and the contents of the patent specification are still within the scope of the invention.

2‧‧‧ Body unit

21‧‧‧Frame

211‧‧‧ board body

212‧‧‧Motor mount

213‧‧‧ elbow

22‧‧‧ moving wheels

23‧‧‧Hosting

231‧‧‧ Chair seat

24‧‧‧Haul grip group

241‧‧‧Connecting Block

242‧‧‧ casing

25‧‧‧ front wheel

3‧‧‧Drive unit

31‧‧‧Drive motor

32‧‧‧ Output shaft

33‧‧‧ crank

331‧‧‧Axis

332‧‧‧Swing end

4‧‧‧Limited unit

41‧‧‧Limited swing arm

5‧‧‧ climbing unit

51‧‧‧foot

511‧‧‧ Receiving section

512‧‧‧Drive segment

513‧‧‧Slip-proof foot cover

L‧‧‧ axis

Claims (10)

A climbing step assisting device for climbing a ladder, the climbing assisting device comprising: a frame unit, comprising a frame, and a pair of moving wheels respectively rotatably disposed on the frame; a driving unit comprising a setting a drive motor between the frame and between the moving wheels, an output shaft connected to the drive motor and driven by the drive motor and rotating on an axis, and a pair respectively disposed on the output shaft Two cranks at opposite ends, each crank having a set of pivot ends disposed on the wheel shaft and a swing end remote from the shaft end; a limit unit disposed on the frame; and a climbing unit including a pair The swinging ends respectively connected to the cranks and the legs of the limiting unit, each of the legs has an abutting section capable of abutting the step, and a first pivoting portion and a second a driving section pivotally connected to the swinging end of one of the cranks and the limiting unit; wherein the driving motor is capable of driving the output shaft to rotate, and the cranks are coupled to drive the pedals to swing Such an arrival of the foot You can climb the ladder. The climbing assist device of claim 1, wherein the frame has two plate bodies respectively spaced apart for the moving wheels, and a motor connected between the plate bodies for the driving motor Fixed seat. The climbing assisting device of claim 2, wherein the limiting unit comprises two pivotingly pivotable portions of the plate body and the motor mount Between the opposite sides of the drive motor and connected to the limit swing arms of the drive segments of the pedals. The climbing assisting device of claim 2, wherein the limiting unit has two chutes respectively formed on one side of the board body and located on opposite sides of the driving motor, and two movably disposed on the The limit guide rollers are connected in the chute and connected to one end of the corresponding drive segments. The climbing assist device of claim 1, wherein the abutting section of each of the legs is slightly semicircular. The climbing assist device of claim 1, wherein each of the abutting sections has a non-slip foot cover pivoted at one end. The climbing assist device of claim 1, wherein the frame unit further comprises a carrier disposed above the frame. The climbing assist device of claim 7, wherein the frame unit further comprises a drag grip group coupled to the frame and extending away from the frame and behind the carrier. The climbing assisting device of claim 8, wherein the drag grip group has a connecting base connected between the board bodies, a sleeve connected to the connecting seat, and a movable insertion portion a handle inner tube of the sleeve, a controller disposed at a top end of the handle inner tube and electrically connected to the drive motor, and a pair of grips respectively disposed on opposite sides of the controller. The climbing assist device of claim 1, wherein the frame unit further comprises a pair of front guide wheels respectively spaced apart from the frame.