Anti-roll wheelchair
By installing electric telescopic devices and counterweights on the wheelchair seat plate, and using conductive balls to contact the conductive seat to control the counterweights to slide, the problem of wheelchair easy to roll and roll when turning or driving at high speed is solved, achieving balance of the wheelchair and user safety improvement.
Patent Information
- Application Number
- CN202510104864.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-04-11
AI Technical Summary
Existing wheelchairs are prone to rolling and rolling when turning or driving at high speed, resulting in high safety risks for users.
An anti-roll wheelchair is designed. By installing an electric telescopic device and counterweight block on the bottom of the seat plate, and a strip groove and a conductive ball are provided on the seat plate. The sliding of the counterweight block is controlled by contacting the conductive ball with the conductive base to keep the wheelchair bracket balanced.
Effectively prevent wheelchair from rolling and rolling, improve user safety, and maintain the wheelchair balance by dynamically adjusting the center of gravity position.
Smart Images
Figure CN119791973A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of wheelchairs, in particular to an anti-rollover wheelchair. Background Art
[0002] Wheelchairs are commonly used means of transportation for people with mobility impairments. During use, existing wheelchairs will tilt to one side when turning at a high speed, causing them to tip over, posing a major safety hazard to the user. People have been trying to find a solution to this problem. Summary of the invention
[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides an anti-roll wheelchair to solve the above-mentioned technical problems.
[0004] In order to achieve the above-mentioned object of the invention, the technical solution provided by the present invention is as follows: A roll-proof wheelchair comprises a wheelchair frame, a seat plate and a back plate are installed on the wheelchair frame, a roller is installed at the bottom end of the wheelchair frame, an electric telescopic device is installed on the bottom surface of the seat plate at a position close to one side of the wheelchair frame, a counterweight block is connected to the power output end of the electric telescopic device, and the counterweight block is slidably arranged on the seat plate, on the other side of the wheelchair frame close to the electric telescopic device; a strip groove is arranged on the seat plate, a conductive ball that can roll along the strip groove is arranged in the strip groove, a first conductive seat that cooperates with the conductive ball is arranged on one side of the strip groove, and a second conductive seat is arranged on the other side of the strip groove, and when the conductive ball rolls to contact the first conductive seat or the second conductive seat, the electric telescopic device can control the counterweight block to slide along the seat plate to keep the wheelchair frame balanced.
[0005] Optionally, the bottom surface of the strip groove is provided with a first groove, a second groove and a third groove for accommodating the bottom of the conductive ball, the first groove is located in the middle of the strip groove, the second groove is located on one side of the strip groove, and the third groove is located on the other side of the strip groove; the first conductor and the second conductor are embedded in the second groove, there is a gap between the first conductor and the second conductor, the inner side surfaces of the first conductor and the second conductor are adapted to the inner side surface of the first groove, so that the bottom of the conductive ball can contact the first conductor and the second conductor at the same time after entering the first groove; the third conductor and the fourth conductor are embedded in the third groove, there is a gap between the third conductor and the fourth conductor, the inner side surfaces of the third conductor and the fourth conductor are adapted to the inner side surface of the second groove, so that the bottom of the conductive ball can contact the third conductor and the fourth conductor at the same time after entering the second groove.
[0006] Optionally, the strip groove and the first groove are arranged horizontally, and the second groove and the third groove are arranged obliquely; the height of the second groove on one side close to the first groove is smaller than the height of the other side; the height of the third groove on one side close to the first groove is smaller than the height of the other side.
[0007] Optionally, magnets are embedded on the bottom surfaces of the first groove, the second groove and the third groove, and the conductive ball is made of iron-containing material.
[0008] Optionally, a bottom plate is provided below the seat plate, an X-shaped lifting frame is provided between the bottom plate and the seat plate, and the counterweight block is connected to the X-shaped lifting frame for controlling the lifting and lowering of the X-shaped lifting frame.
[0009] Optionally, the X-shaped lifting frame includes a first support rod and a second support rod, the first support rod and the second support rod are hinged, and the hinge position is located in the middle of the first support rod and the second support rod; a first guide rail is arranged on a side of the base plate close to the base plate, and the bottom end of the first support rod is provided with a caster that can move along the first guide rail, or is slidably connected to the first guide rail; a second guide rail is arranged at the bottom end of the seat plate corresponding to the position of the first guide rail, and the top end of the second support rod is provided with a caster that can move along the second guide rail, or is slidably connected to the second guide rail; the top end of the first support rod is hinged to the seat plate, and the bottom end of the second support rod is hinged to the base plate; the counterweight block is hinged to the second support rod.
[0010] Optionally, there are two X-shaped lifting frames, and a reinforcement rod is arranged between the two first support rods and the second support rod. The reinforcement rod connecting the two second support rods is arranged close to the bottom of the second support rod and is hinged to the counterweight block.
[0011] Optionally, the width of the bottom plate is the same as that of the seat plate, the width of the back plate is smaller than that of the seat plate, and one side of the back plate is flush with a side of the seat plate away from the second guide rail.
[0012] Optionally, a ventilation channel is provided inside the seat plate, and ventilation holes communicating with the ventilation channel are provided on the seat plate, and some of the ventilation holes are located on the outer side of the back plate.
[0013] Optionally, a bottom plate is provided below the seat plate, an X-shaped lifting frame is provided between the bottom plate and the seat plate, and a driving member for controlling the lifting of the X-shaped lifting frame is provided on the bottom plate.
[0014] The anti-roll wheelchair provided by the present invention controls the counterweight block to move to a position away from the contact point between the conductive ball and the conductive seat, so that the center of gravity of the wheelchair is offset in the opposite direction of the tilt direction, so as to balance the wheelchair, thereby effectively preventing the wheelchair from tilting and overturning. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic structural diagram of an anti-roll wheelchair in Embodiment 1 is shown; Figure 2 Shows Figure 1 A magnified view at point A; Figure 3 Shows Figure 2 Enlarged view at B; Figure 4 Shows Figure 1 Side view of Figure 5 A schematic structural diagram of an anti-roll wheelchair in Embodiment 2 is shown; Figure 6 Shows Figure 5 Side view of Markings in the accompanying drawings: Seat plate 1, back plate 2, roller 3, electric telescopic device 4, counterweight 5, strip groove 6, conductive sphere 7, first conductor 8, second conductor 9, magnet 10, bottom plate 11, first guide rail 12, second guide rail 13, reinforcement rod 14, first support rod 15, second support rod 16, drive member 17, wheelchair bracket 18. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0017] Example 1, please refer to Figure 1-Figure 4The present embodiment is an anti-roll wheelchair, comprising a wheelchair frame 18, on which a seat plate 1 and a back plate 2 are installed, a roller 3 is installed at the bottom end of the wheelchair frame, an electric telescopic device 4 is installed on the bottom surface of the seat plate near the left side of the wheelchair frame, wherein the electric telescopic device can use existing devices such as electric hydraulic cylinders and linear motion motors, a counterweight block 5 is connected to the power output end of the electric telescopic device, and the counterweight block is slidably arranged on the seat plate, near the right side of the wheelchair frame relative to the electric telescopic device; a strip groove 6 is arranged on the seat plate, and a conductive ball 7 that can roll along the strip groove is arranged in the strip groove, and a first conductive seat cooperating with the conductive ball is arranged on one side of the strip groove, and the strip groove is provided with a first conductive seat. A second conductive seat is provided on the other side of the groove. When the conductive ball rolls and contacts the first conductive seat or the second conductive seat, the electric telescopic device can control the counterweight to slide along the seat plate to keep the wheelchair frame balanced. In the specific design, the first conductive seat can be set on the left and the second conductive seat can be set on the right. When the conductive ball rolls and contacts the first conductive seat, the electric telescopic device is controlled to drive the counterweight to move to the right. When the conductive ball rolls and contacts the second conductive seat, the electric telescopic device is controlled to drive the counterweight to move to the left. In this way, the center of gravity of the wheelchair is changed by controlling the counterweight to move to a position away from the contact point between the conductive ball and the conductive seat, so that the center of gravity is shifted in the opposite direction of the tilt direction, thereby effectively preventing the wheelchair from tilting and overturning. It should be noted that in the present application, the direction names such as left, right, front, back, up and down are all based on the use state of the wheelchair. In this embodiment, reference can be made to Figure 1 .
[0018] As an implementation method, see Figure 2 and Figure 3 The bottom surface of the strip groove is provided with a first groove, a second groove and a third groove for accommodating the bottom of the conductive ball, the first groove is located in the middle of the strip groove, the second groove is located on one side of the strip groove, and the third groove is located on the other side of the strip groove; the second groove is inlaid with a first conductor 8 and a second conductor 9, there is a gap between the first conductor and the second conductor, the inner side surfaces of the first conductor and the second conductor are adapted to the inner side surface of the first groove, so that the bottom of the conductive ball can contact the first conductor and the second conductor at the same time after entering the first groove; the third groove is inlaid with a third conductor and a fourth conductor, there is a gap between the third conductor and the fourth conductor, the inner side surfaces of the third conductor and the fourth conductor are adapted to the inner side surface of the second groove, so that the bottom of the conductive ball can contact the third conductor and the fourth conductor at the same time after entering the second groove. Since the arrangement of the third conductor and the fourth conductor is the same as that of the first conductor and the second conductor, they are no longer shown in an enlarged figure separately.
[0019] In actual production, the strip groove and the first groove are arranged horizontally, and the second groove and the third groove are arranged obliquely, and the inclination angle is generally 30°-45 degrees relative to the horizontal plane; the height of the second groove on one side close to the first groove is smaller than the height of the other side; the height of the third groove on one side close to the first groove is smaller than the height of the other side. In order to prevent the conductive ball from quickly escaping from the groove under the action of inertia and losing the regulating function during movement, magnets 10 are embedded on the bottom surfaces of the first groove, the second groove and the third groove. The conductive ball is made of iron-containing material, such as iron, iron-copper alloy, etc., so that when the wheelchair is tilted, the angle between the gravity direction of the conductive ball and the bottom surface of the strip groove gradually decreases. When the gravity of the conductive ball overcomes the attraction of the magnet, the conductive ball will detach from the corresponding groove. When it moves to the corresponding groove, it is easier to quickly reduce its speed under the attraction of the magnet and enter the corresponding groove.
[0020] As a preferred implementation, see Figure 1 and Figure 4 A bottom plate 11 is arranged below the seat plate, an X-shaped lifting frame is arranged between the bottom plate and the seat plate, the counterweight block is connected to the X-shaped lifting frame, and is used to control the lifting of the X-shaped lifting frame. The X-shaped lifting frame can use an existing structure, and the following is a specific structure: the X-shaped lifting frame includes a first support rod 15 and a second support rod 16, the first support rod and the second support rod are hinged, and the hinge position is located in the middle of the first support rod and the second support rod; a first guide rail 12 is arranged on the bottom plate near the right side, and a caster that can move along the first slide rail is arranged at the bottom end of the first support rod, or is slidably connected to the first guide rail; a caster that can move along the first slide rail is arranged at the bottom end of the seat plate at a position corresponding to the first guide rail The second guide rail 13, the top end of the second support rod is provided with a caster that can move along the second guide rail, or is slidably connected to the second guide rail; the top end of the first support rod is hinged to the seat plate, and the bottom end of the second support rod is hinged to the base plate. During manufacturing, the hinge point on the base plate and the hinge point on the seat plate are correspondingly arranged; the counterweight block is hinged to the second support rod. In order to strengthen the strength of the lifting device, there are two X-shaped lifting frames, and reinforcement rods 14 are arranged between the two first support rods and the second support rods. The two ends of the reinforcement rods are respectively fixedly connected to the corresponding support rods. The reinforcement rod connecting the two second support rods is arranged close to the bottom of the second support rod and is hinged to the counterweight block.
[0021] In actual production, it is preferred that the width of the bottom plate is the same as that of the seat plate, the width of the back plate is smaller than that of the seat plate, and the left side is flush with the left side of the seat plate. When in use, the center of gravity of the wheelchair is slightly biased to the left side of the bottom plate, and the seat is not easy to tilt to the right and roll over. When the seat tilts to the left, the electric telescopic device drives the counterweight to move to the right while pushing the X-lifting device down to move the center of gravity downward, thereby quickly adjusting the balance of the wheelchair frame to prevent the wheelchair from tilting and causing rollover. In actual production, the right side of the back plate can also be processed to be flush with the right side of the seat plate, and the first guide rail and the second guide rail are set close to the left side of the wheelchair frame. The principle is the same as the principle of flushing the left side mentioned above, and no specific limitation is made here.
[0022] As a good way, the seat plate is provided with a ventilation channel inside, and the seat plate is provided with ventilation holes connected with the ventilation channel, and some of the ventilation holes are located on the outside of the back plate. In this way, the outside and the inside are connected by gas, so as to prevent patients who sit in wheelchairs for a long time from suffering from bedsores.
[0023] Example 2, please refer to Figure 5 and Figure 6 The structure of the embodiment is roughly the same as that of embodiment 1, except that a driving member 17 for controlling the lifting of the X-shaped lifting frame is provided on the bottom plate, and the counterweight block is not connected to the X-shaped lifting frame, wherein the driving member can use an electric hydraulic cylinder, a hydraulic cylinder or an electric telescopic rod, etc.; when manufacturing, the center of gravity position is shifted in the opposite direction of the tilt direction, and the driving member drives the X-shaped lifting frame to move downward, and when the wheelchair is stable, the counterweight block and the X-shaped lifting frame can be controlled to return to their original positions.
[0024] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.
[0025] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).
[0026] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0027] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-roll wheelchair, comprising a wheelchair frame (18), a seat plate (1) and a back plate (2) being mounted on the wheelchair frame, a roller (3) being mounted on the bottom end of the wheelchair frame, characterized in that: An electric telescopic device (4) is installed on the bottom surface of the seat plate at a position close to one side of the wheelchair support, a power output end of the electric telescopic device is connected to a counterweight block (5), and the counterweight block is slidably arranged on the seat plate, relative to the other side of the electric telescopic device close to the wheelchair support; The seat plate is provided with a strip groove (6), a conductive ball (7) capable of rolling along the strip groove is provided in the strip groove, a first conductive seat cooperating with the conductive ball is provided on one side of the strip groove, and a second conductive seat is provided on the other side of the strip groove, and when the conductive ball rolls to contact the first conductive seat or the second conductive seat, the electric telescopic device can control the counterweight to slide along the seat plate to keep the wheelchair frame balanced.
2. The anti-roll wheelchair according to claim 1, characterized in that: The bottom surface of the strip groove is provided with a first groove, a second groove and a third groove for accommodating the bottom of the conductive ball, the first groove is located in the middle of the strip groove, the second groove is located on one side of the strip groove, and the third groove is located on the other side of the strip groove; A first conductor (8) and a second conductor (9) are embedded in the second groove, a distance is provided between the first conductor and the second conductor, and the inner side surfaces of the first conductor and the second conductor are adapted to the inner side surface of the first groove, so that the bottom of the conductive ball can contact the first conductor and the second conductor at the same time after entering the first groove; A third conductor and a fourth conductor are embedded in the third groove, and there is a gap between the third conductor and the fourth conductor. The inner side surfaces of the third conductor and the fourth conductor are adapted to the inner side surface of the second groove, so that the bottom of the conductive ball can contact the third conductor and the fourth conductor at the same time after entering the second groove.
3. The anti-roll wheelchair according to claim 2, characterized in that: The strip groove and the first groove are arranged horizontally, and the second groove and the third groove are arranged obliquely; the height of the second groove on one side close to the first groove is smaller than the height of the other side; The height of one side of the third groove close to the first groove is smaller than the height of the other side.
4. The anti-roll wheelchair according to claim 2 or 3, characterized in that: Magnets (10) are embedded on the bottom surfaces of the first groove, the second groove and the third groove, and the conductive ball is made of iron-containing material.
5. The anti-roll wheelchair according to claim 2, characterized in that: A bottom plate (11) is arranged below the seat plate, an X-shaped lifting frame is arranged between the bottom plate and the seat plate, and the counterweight block is connected to the X-shaped lifting frame for controlling the lifting of the X-shaped lifting frame.
6. The anti-roll wheelchair according to claim 5, characterized in that: The X-shaped lifting frame comprises a first support rod (15) and a second support rod (16), wherein the first support rod and the second support rod are hinged, and the hinge position is located in the middle of the first support rod and the second support rod; A first guide rail (12) is arranged on one side of the bottom plate close to the bottom plate, and a caster capable of moving along the first guide rail is arranged at the bottom end of the first support rod, or is slidably connected to the first guide rail; A second guide rail (13) is arranged at the bottom end of the seat plate at a position corresponding to the first guide rail, and a caster capable of moving along the second guide rail is arranged at the top end of the second support rod, or is slidably connected to the second guide rail; The top end of the first support rod is hinged to the seat plate, and the bottom end of the second support rod is hinged to the bottom plate; The counterweight block is hinged to the second support rod.
7. The anti-roll wheelchair according to claim 6, characterized in that: There are two X-shaped lifting frames, and a reinforcement rod (14) is arranged between the two first support rods and the second support rods. The reinforcement rod connecting the two second support rods is arranged near the bottom of the second support rods and is hinged to the counterweight block.
8. The anti-roll wheelchair according to claim 6, characterized in that: The width of the bottom plate is the same as that of the seat plate, the width of the back plate is smaller than that of the seat plate, and one side of the back plate is flush with the side of the seat plate away from the second guide rail.
9. The anti-roll wheelchair according to claim 8, characterized in that: An air permeable passage is arranged inside the seat plate, and air permeable holes communicating with the air permeable passage are arranged on the seat plate, and some of the air permeable holes are located on the outer side of the back plate.
10. The anti-roll wheelchair according to claim 2, characterized in that: A bottom plate is arranged below the seat plate, an X-shaped lifting frame is arranged between the bottom plate and the seat plate, and a driving member (17) for controlling the lifting of the X-shaped lifting frame is arranged on the bottom plate.