JP2024021374A - Automatic deceleration wheel body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic deceleration wheel body which decelerates on a downhill.

SOLUTION: An automatic deceleration wheel body comprises: a wheel body unit 10; and a deceleration unit 20. The wheel body unit 10 comprises: a wheel base 11; a wheel shaft 12; and a rotary wheel 13. A plurality of engagement stop pieces 1312 is arranged annularly and radially in a place near a side edge on one side of a wheel frame 131, and the engagement stop pieces rotate with the rotary wheel 13. The deceleration unit 20 has: a fixing base 21; and a slide member 22. The fixing base 21 is installed on one side of the rotary wheel 13 and has a slide hole 212 drilled therein, and the slide member 22 is slid in the slide hole 212. The slide member 22 is provided with an elastic part, a stop part 223 is connected to a front end of the elastic part. When the rotary wheel 13 goes down a slope, the stop part 223 of the slide member 22 is exposed from the outside of the slide hole 212 and is moved to a rotation path of the plurality of engagement stop pieces 1312. The stop part 223 allows the plurality of engagement stop pieces 1312 to pass by flicking the engagement stop piece one by one, by elastic force of the elastic part.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a wheel body, and particularly to a wheel body having an automatic deceleration function when going down a slope.

Taiwan has already entered an aging society, and the demand for long-term care is increasing day by day. In a hospital or elderly care facility, when a patient or elderly person has difficulty getting around due to a walking disability or physical weakness, the assistance of a walking aid or wheelchair makes it easier for the patient or elderly person to leave the house. Therefore, the rate of use of walking aids or wheelchairs is increasing day by day.

Both walking aids and wheelchairs are equipped with wheel bodies, which allow them to move on the ground. However, when walking aids or wheelchairs go downhill, they tend to accelerate due to the downward sliding force, and the wheel bodies Sometimes the rotation is too fast. In this case, the user generally cannot react quickly and cannot immediately control the brake mechanism to brake the wheel body. As a result, accidents such as falling or the falling of walking aids or wheelchairs are likely to occur, and the risk for sick, elderly, and disabled people with weak control is extremely high, and improvements are needed.

The present inventor has considered the above-mentioned drawbacks of general wheel bodies, and has made improvements through creative will, various studies, and prototypes, and has provided the present invention.

The main purpose of the present invention is to automatically create a deceleration effect when the rotating wheel moves forward and goes down the slope, to prevent the user from being injured due to sudden acceleration and going down the slope too fast, and to ensure safety in use. This is an automatic deceleration wheel body that improves performance.

The present invention provides an automatic deceleration wheel body. It includes a wheel body unit. It includes a wheel platform, a wheel axle that inserts into the wheel platform, and a rotating wheel that rotates around the wheel axle. A hole is bored in the wheel platform, a wheel axle is inserted into the hole, and one end of the wheel axle is formed into a non-circular step. The rotating wheel is provided with a wheel frame, and an outer ring is coupled to the outer peripheral edge of the wheel frame. A shaft hole is bored at the center of the wheel frame, and a wheel shaft is inserted into the shaft hole so that the rotary wheel can freely rotate on the wheel shaft. A plurality of engagement stop pieces are installed radially in a ring shape near one side edge of the wheel frame, and the plurality of engagement stop pieces rotate together with the rotating wheel.
The deceleration unit includes a fixed base and a slide member. The fixing base has a fixing hole and a slide hole, and the non-circular step of the wheel axle is passed through the fixing hole and fixed. A fixed base is installed on one side of the rotating wheel, and the slide member is slid within the slide hole. The slide member includes a slide body, a front end of the slide body is connected to an elastic part, and a front end of the elastic part is connected to a stop part. When the rotating wheel moves forward and descends the slope, the slide hole gradually forms a downward inclination angle, and the slide member slides along the slide hole due to gravity, exposing the stop part of the slide member from the outside of the slide hole. and move it onto the rotation path of the plurality of engagement stop pieces. The plurality of engagement stop pieces are flipped one by one by the elasticity of the stop part and the elastic part to achieve a deceleration effect.

It has the effects of the specific embodiment described above.

The automatic deceleration wheel body 1 of the present invention is installed in a moving device such as a wheelchair 2 or a walking aid 3, and when moving forward and going down a slope, it automatically creates a deceleration effect, prevents sudden acceleration, and prevents sudden acceleration. Avoid falling too fast and injuring the user, improving safety of use.

FIG. 3 is a three-dimensional view of the present invention. FIG. 3 is an exploded view of the present invention. FIG. 3 is a three-dimensional view of the fixing base and slide member of the present invention. FIG. 2 is a cross-sectional view of the present invention. FIG. 1 is an operation instruction diagram for automatic deceleration when the present invention goes down a slope. FIG. 2 is an operation instruction diagram for automatic deceleration when the present invention goes down a hill; FIG. 3 is a usage instruction diagram of the present invention installed in a wheelchair. FIG. 2 is a usage instruction diagram in which the present invention is installed in a walking aid. FIG. 3 is a three-dimensional view of another embodiment of the invention. FIG. 3 is an exploded view of another embodiment of the present invention. FIG. 3 is a cross-sectional view of another embodiment of the invention. FIG. 1 is a diagram illustrating operation instructions for automatic deceleration when descending a slope in another embodiment of the present invention. FIG. 2 is a diagram showing an automatic deceleration operation instruction when going down a slope in another embodiment of the present invention.

(First embodiment)
Preferred embodiments of the present invention are illustrated and described below, and it is hoped that those skilled in the art related to the present invention will be able to practice them based on the present specification.

As shown in FIGS. 1 to 4, the automatic deceleration wheel body 1 of the present invention includes a wheel body unit 10 and a deceleration unit 20.

The wheel body unit 10 includes a wheel stand 11 , a wheel axle 12 inserted into the wheel stand 11 , and a rotating wheel 13 that rotates around the wheel axle 12 . The wheel platform 11 is formed by extending two side plates 111, and the two side plates 111 have perforations 1111 formed therein. The wheel axle 12 is inserted into the hole 1111, one end of the wheel axle 12 is formed with a non-circular step 121, and the rotating wheel 13 is assembled and installed between the two side plates 111. The rotating wheel 13 is provided with a wheel frame 131, and the outer peripheral edge of the wheel frame 131 connects an outer ring 132. A shaft hole 1311 is bored at the center of the wheel frame 131, and the wheel shaft 12 is inserted into the shaft hole 1311 so that the rotating wheel 13 can freely rotate on the wheel shaft 12. A plurality of engagement stop pieces 1312 are installed radially in a ring shape near one edge of the wheel frame 131, and the plurality of engagement stop pieces 1312 rotate together with the rotating wheel 13.

The deceleration unit 20 includes a fixed base 21, a slide member 22, and a protective cap 23. The fixed base 21 is assembled and installed between the two side plates 111 and is further positioned on one side of the rotating wheel 13. The fixing base 21 has a fixing hole 211 and a slide hole 212, and the non-circular step 121 of the wheel axle 12 is passed through the fixing hole 211 and fixed. The slide hole 212 forms a horizontal angle in a normal state, and the slide member 22 is passed through the slide hole 212 to cause the slide member 22 to slide along the slide hole 212 . The slide member 22 is provided with a slide body 221, a front end of the slide body 221 connects a piece-shaped elastic part 222, and a front end of the elastic part 222 connects a stop part 223. The protective cap 23 is installed between the two side plates 111 of the wheel platform 11 and located on one side of the rotating wheel 13. The protective cap 23 covers the fixed base 21 and the slide member 22. An assembly hole 231 is formed in the center of the protective cap 23, and the non-circular step 121 is passed through the assembly hole 231 and fixed.

In use, the automatic deceleration wheel body 1 is attached to a mobility device such as a wheelchair 2 (see, for example, FIG. 7) or a walking aid 3 (see, for example, FIG. 8). When the wheelchair 2 or the walking aid 3 moves on flat ground, the stop portion 223 of the slide member 22 is not on the rotation path of the plurality of engagement stop pieces 1312 (see FIG. 4 as an example), and can move normally.
As shown in FIGS. 5 and 6, when the wheelchair 2 or the walking aid 3 moves down a slope, the slide hole 212 gradually forms a downward inclination angle, and the slide member 22 moves along the slide hole 212 due to gravity. The slide member 22 is slid to expose the stop portion 223 of the slide member 22 to the outside of the slide hole 212, and is moved onto the rotation path of the plurality of engagement stop pieces 1312. The stop part 223 blocks the plurality of engagement stop pieces 1312, and the elastic part 222 elastically deforms and recovers, allowing the stop part 223 to pass the plurality of engagement stop pieces 1312 one by one while flipping them one by one. Achieve a deceleration effect.

(Second embodiment)
Furthermore, FIGS. 9 to 11 show another embodiment of the automatic deceleration wheel body 1 of the present invention, and the automatic deceleration wheel body 1 of another embodiment includes a wheel body unit 10 and a deceleration unit 20.

The wheel body unit 10 includes a wheel stand 11, a wheel axle 12 inserted into the wheel stand 11, and a rotating wheel 13 that rotates around the wheel axle 12. The wheel platform 11 is formed by extending two side plates 111, and the two side plates 111 have a hole 1111 formed therein, and the wheel axle 12 is inserted into the hole 1111, and the rotating wheel 13 is formed by forming a hole 1111 into the two side plates 111. Assemble and install between 111 and 111. The rotating wheel 13 is provided with a wheel frame 131, and the outer peripheral edge of the wheel frame 131 connects an outer ring 132. A shaft hole 1311 is bored at the center of the wheel frame 131, and the wheel shaft 12 is inserted into the shaft hole 1311 so that the rotating wheel 13 can freely rotate on the wheel shaft 12. A plurality of elastic stop pieces 1313 are arranged in a ring shape on one side near the edge of the wheel frame 131, and the plurality of elastic stop pieces 1313 rotate together with the rotating wheel 13.

The deceleration unit 20 includes a fixed base 24, a slide member 25, and a side cap 26. The fixed base 24 is installed on one side of the rotary wheel 13, the fixed base 24 has a slide hole 241, and the slide member 25 is slid within the slide hole 241. A position restriction groove 251 is formed in the middle of the slide member 25, and the position restriction groove 251 allows the slide member 25 to slide along the slide hole 241 within the position restriction range. A stop part 252 is provided at the front end of the slide member 25 , and a side cap 26 is provided on one side of the rotating wheel 13 and is assembled and coupled with the fixed base 24 . The side cap 26 covers the fixed base 21 and the slide member 22, and the slide hole 241 of the fixed base 24 is formed at a horizontal angle in the normal state. A through hole 261 is bored in the center of the side cap 26, and the wheel axle 12 is inserted into the through hole 261. Further, the side cap 26 has a circular arc-shaped long hole 262, and two screws 263 are inserted into the circular arc-shaped long hole 262 and further fixed with one of the side plates 111. The side cap 26 and the wheel base 11 are connected, and the wheel base 11 moves relative to the side cap 26 within the range of the arcuate elongated hole 262. The position limiting groove 251 has a first end 2511 and a second end 2512, and its position limiting range is between the first end 2511 and the second end 2512.

In use, the automatic deceleration wheel body 1 is attached to a mobility device such as a wheelchair 2 (see, for example, FIG. 7) or a walking aid 3 (see, for example, FIG. 8). When the wheelchair 2 or the walking aid 3 moves on flat ground, the stop portion 252 of the slide member 25 is not on the rotation route of the plurality of elastic stop pieces 1313 (see FIG. 11 as an example), so that the wheelchair 2 or the walking aid 3 can move normally.
For example, as shown in FIGS. 12 and 13, when the wheelchair 2 or the walking aid 3 moves forward and descends the slope, the slide hole 241 gradually forms a downward inclination angle, and the slide member 25 moves toward the slide hole 241 due to gravity. The stop portion 252 of the slide member 25 is exposed from the outside of the slide hole 241, and the slide member 25 is moved along the rotation route of the plurality of elastic stop pieces 1313. The plurality of elastic stop pieces 1313 are blocked by the stop part 252, and there is also elastic deformation and elastic recovery of the elastic stop pieces 1313, and the elastic stop pieces 1313 are deformed and passed one by one by the stop part 252, and after passing, they recover to their original state, resulting in a deceleration effect. Achieve.

In addition, as shown in FIGS. 11 to 13, the position limiting groove 251 has a first end 2511 and a second end 2512, and the side edge of the wheel axle 12 engages with the position limiting groove 251. When the slide hole 241 forms a downward inclination angle, the second end 2512 of the position limit groove 251 can be pressed by the side edge of the wheel axle 12, so the slide member 25 is moved within the position limit range and slides. This prevents the member 25 from falling out of the slide hole 241.

1 Automatic reduction wheel body 10 Wheel body unit 11 Wheel platform 111 Side plate 1111 Perforation 12 Wheel axle 121 Non-circular step 13 Rotating wheel 131 Wheel frame 1311 Shaft hole 1312 Engagement stop piece 1313 Elastic stop piece 132 Outer ring 2 Wheelchair 20 Reduction unit 21 Fixation Base 211 Fixing hole 212 Slide hole 22 Slide member 221 Slide body 222 Elastic part 223 Stop part 23 Protective cap 231 Assembly hole 24 Fixing base 241 Slide hole 25 Slide member 251 Position limiting groove 2511 First end 2512 Second end 252 Stop part 26 Side cap 261 Through hole 262 Arc-shaped long hole 263 Screw 3 Walking aid

Claims (9)

In the automatic reduction wheel body,
a wheel platform, a wheel axle inserted into the wheel platform, and a rotary wheel rotating around the wheel axle, the wheel platform having a hole drilled therein, the wheel axle inserted into the hole, and one end of the wheel axle. is formed into a non-circular step, the rotary wheel is provided with a wheel frame, the outer peripheral edge of the wheel frame connects an outer ring, a shaft hole is bored at the center position of the wheel frame, and the shaft hole is provided with a wheel frame. A wheel axle is inserted, the rotary wheel is freely rotated on the wheel axle, and a plurality of engagement stop pieces are installed radially in a ring shape near the edge of one side of the wheel frame, and the plurality of engagement stop pieces The joint stop piece includes a wheel body unit that rotates according to the rotating wheel;
The fixing base has a fixing hole and a sliding hole, the wheel shaft is passed through the fixing hole and the wheel is fixed on the non-circular stage, and the fixing base is connected to one side of the rotating wheel. the slide member is slid within the slide hole, the slide member is provided with a slide body, a front end of the slide body is connected to an elastic part, a front end of the elastic part is connected to a stop part, When the rotary wheel moves forward and descends the slope, the slide hole gradually forms a downward inclination angle, and the slide member slides along the slide hole due to gravity, and the stop part of the slide member is moved. Exposed from the outside of the slide hole and moved onto the rotation route of the plurality of engagement stop pieces, while the stop part flicks the plurality of engagement stop pieces one by one with the elasticity of the elastic part. a deceleration unit that achieves a deceleration effect by passing through the
An automatic reduction wheel body comprising: 2. The automatic deceleration wheel body according to claim 1, wherein the wheel platform is formed by extending two side plates, and the fixed platform is installed between the two side plates. The automatic deceleration wheel body according to claim 1, wherein the slide hole forms a horizontal angle in a normal state. 2. The automatic deceleration wheel body according to claim 1, wherein the elastic portion is in the form of a piece. The deceleration unit further includes a protective cap, the protective cap is installed on one side of the rotating wheel and covers the fixed base and the sliding member, and an assembly hole is bored in the center of the protective cap, 2. The automatic deceleration wheel body according to claim 1, wherein the assembly hole is passed through and fixed onto the non-circular step. In the automatic reduction wheel body,
a wheel platform, a wheel axle inserted into the wheel platform, and a rotary wheel rotating around the wheel axle; A frame is provided, an outer peripheral edge of the wheel frame connects an outer ring, a shaft hole is bored at a center position of the wheel frame, the wheel shaft is inserted into the shaft hole, and the rotating wheel is connected to the wheel shaft. a wheel body unit that is freely rotated on the top of the wheel frame, a plurality of elastic stop pieces are arranged in an annular shape on one side near the edge of the wheel frame, and the plurality of elastic stop pieces rotate together with the rotating wheel;
It includes a fixed base and a slide member, the fixed base is installed on one side of the rotating wheel, the fixed base has a slide hole, the slide member is slid in the slide hole, and the front end of the slide member is is provided with a stop part, and when the rotary wheel moves forward and descends the slope, the slide hole gradually forms a downward inclination angle, and the slide member slides along the slide hole by gravity, and the slide The stop part of the member is exposed from the outside of the slide hole, and the member is moved onto the rotation route of the plurality of elastic stop pieces, and the stop part blocks the plurality of elastic stop pieces, and the stop part of the member is moved to the rotation route of the plurality of elastic stop pieces. A deceleration unit that passes through the stop portion while deforming the plurality of elastic stop pieces one by one, including elastic deformation and elastic recovery, and returns to its original state upon passing, achieving a deceleration effect;
An automatic reduction wheel body comprising: 7. The automatic deceleration wheel according to claim 6, wherein a position restriction groove is formed in the middle of the slide member, and the position restriction groove allows the slide member to slide along the slide hole within a position restriction range. body. 7. The automatic deceleration wheel body according to claim 6, wherein the slide hole forms a horizontal angle in a normal state. The wheel platform is formed by extending two side plates, and the reduction unit further includes a side cap, the side cap is installed on one side of the rotating wheel, and the side cap is combined with the fixed base. the fixing base and the slide member are covered, a through hole is bored in the center of the side cap, the wheel shaft is inserted into the through hole, and the side cap has an arcuate length. A hole is drilled, two screws are inserted into the arc-shaped elongated hole, and one of the screws is fixed with the side plate, and the side cap is connected to the wheel platform, and the wheel platform is connected to the arc-shaped hole. 7. The automatic reduction wheel assembly according to claim 6, wherein the automatic reduction wheel body moves relative to the side cap within the range of the elongated hole.

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