Multi-posture wheelchair
By designing structures such as the keel bracket, foot pedals, auxiliary wheels and push rods in a multi-position wheelchair, combined with the combination of buffer rollers and damping rods, the problem of the wheelchair continuing to move due to inertia when the battery is exhausted or the motor fails is solved, achieving for better control and security.
Patent Information
- Application Number
- CN202411454245.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-01-24
AI Technical Summary
When the existing multi-position electric wheelchair is exhausted or the motor fails, the wheelchair will continue to move due to inertia, which makes it difficult for the patient to control it in time, and the arm cannot effectively control the main wheel, resulting in a long and uncertain natural speed drop.
Design a multi -posture wheelchair with a structure such as keel branches, pedals, auxiliary wheels, and pushing rods. The combination of lower pressure swing panels and curved grooves increases the friction of the auxiliary wheels, reducing its rotation speed At the same time, use the combination of cushioning roller, U -shaped support sleeve and damping rod to control the swing of the buffer roller to avoid tilt; and the adjustment of the supporting rod through the soft cushion, the back of the cushion and the card to meet the needs of different patients.
It effectively reduces the rotation speed of the auxiliary wheels, avoids the problem of rapid rotation of the wheelchair in a power-free state, improves the patient's control ability and sense of security, and at the same time adapts to the needs of different patients and improves the flexibility of the wheelchair.
Smart Images
Figure CN119344964A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of wheelchairs, in particular to a multi-posture wheelchair. Background Art
[0002] A wheelchair is a chair with wheels that can help replace walking. It is an important means of transportation for the injured, sick, and disabled for home rehabilitation, transportation, medical treatment, and outdoor activities. A wheelchair not only meets the transportation needs of the physically disabled and those with limited mobility, but more importantly, it makes it easier for family members to move and care for the patients, allowing the patients to use wheelchairs for physical exercise and participate in social activities.
[0003] In the current prior art, the existing multi-posture wheelchair is an electric wheelchair. The design of the electric wheelchair takes into account emergencies, such as battery exhaustion or motor failure. Many electric wheelchairs are equipped with a manual mode or a backup drive system, which means that even after the motor of the electric wheelchair is powered off, the motor cannot limit the position of the wheelchair wheels, thereby causing the tires to be unstressed. When the wheelchair moves on a slope or a slightly inclined road surface, the wheelchair without power will continue to move under the action of inertia. Since the wheelchair is always moving, the patient sitting on the wheelchair cannot notice it in the first time. At this time, the wheelchair without power can only control the speed of the main wheels on both sides through the arms. As the speed continues to increase, the main wheels on both sides of the wheelchair will rotate rapidly, and the arms will not be able to control the main wheels at this time. Manual control can only be performed after the speed of the wheelchair is reduced. The natural deceleration of the wheelchair under the action of inertia will be very long, and there will be many problems with uncertain external factors in the whole process.
[0004] To this end, the present invention provides a multi-posture wheelchair. Summary of the invention
[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.
[0006] The technical solution adopted by the present invention to solve its technical problem is: a multi-posture wheelchair described in the present invention includes a keel bracket and a foot pedal arranged on one side surface of the keel bracket, a fixing plate fixedly installed on the outer surface of the keel bracket, an auxiliary wheel is arranged on the outer surface of the keel bracket, a groove is opened on the outer surface of the foot pedal, the inner wall surface of the groove is movably connected to the push rod, and the two side surfaces of the push rod are fixedly connected with a limit baffle movably overlapped on the outer surface of the top of the foot pedal, and a foot pad is fixedly installed on the top surface of the push rod. The bottom surface of the foot pedal is provided with a swing plate at one side edge position, a limiting rod 2 is movably sleeved on the outer surface of the swing plate, and both ends of the limiting rod 2 are fixedly connected with a downward-pressing swing plate, a lower inclined groove is provided on the bottom surface of the foot pedal, the bottom surface of the push rod is movably overlapped on the top surface of the downward-pressing swing plate, an arc-shaped fitting groove is provided on the bottom surface of the downward-pressing swing plate and at the middle position, a limiting arc plate is fixedly connected to the inner wall surface of the arc-shaped fitting groove, and a non-slip pad is fixedly connected to the inner wall surface of the limiting arc plate.
[0007] Preferably, a swing arm is swingably sleeved on the outer surface of the fixed plate, and a U-shaped supporting sleeve is movably sleeved on one end of the swing arm.
[0008] Preferably, a buffer roller is movably sleeved on one end of the U-shaped support sleeve, and a swing sleeve rod is movably sleeved on the outer surface of the swing arm.
[0009] Preferably, a damping rod is fixedly connected to the outer surface of the swing sleeve rod, and an elastic buffer wire arranged on the outer surface of the swing sleeve rod is movably sleeved on the outer surface of the damping rod.
[0010] Preferably, a padded backrest is provided on the outer surface of the keel support, and a soft seat cushion is provided on the top surface of the keel support.
[0011] Preferably, a motor is disposed inside the keel bracket, and a main wheel movably sleeved on the outer surface of the keel bracket is fixedly connected to the output end of the motor.
[0012] Preferably, the auxiliary wheel is arranged at the bottom edge of the foot pedal, and the outer surface of the auxiliary wheel is arranged at one side edge of the main wheel.
[0013] Preferably, a fixing ring is provided on the outer surface of the keel bracket and on the back side of the cushion backrest, and a limiting rod is movably sleeved on the outer surface of the fixing ring.
[0014] Preferably, a handle is provided on the top surface of the limiting rod, a limiting fixing plate is provided on the outer surface of the fixing ring, and a clamping support rod movably sleeved on the outer surface of the limiting fixing plate is provided on the outer surface of the keel bracket.
[0015] Preferably, a lifting back plate is movably sleeved on the outer surface of the limiting fixing plate, a swing arm is arranged on the outer surface of the lifting back plate, and a support pad is arranged on the top surface of the swing arm.
[0016] The beneficial effects of the present invention are as follows:
[0017] The cam is pressed against the bottom surface of the pedal and the bottom surface of the pedal is pressed against the bottom surface of the pedal, thereby reducing the rotation speed of the auxiliary wheel and achieving the effect of reducing the rotation speed of the auxiliary wheel.
[0018] 2. A multi-posture wheelchair described in the present invention, when the keel bracket is moving, the buffer roller contacts the ground, and when the buffer roller passes through a pothole, the up and down vibration generated cooperates with the U-shaped support sleeve on the outer surface of the buffer roller to elastically push the swing arm upward, so that the connection between the swing arm and the fixed plate swings up and down, and when the swing arm pushes upward, it elastically pushes the swing sleeve rod on the top surface of the swing arm, and then cooperates with the damping rod and the elastic buffer wire on the outer surface of the swing sleeve rod to elastically buffer the upward push of the swing arm, and then the position of the elastic buffer wire is limited by the damping rod, so that when the buffer roller is lifted upward, it will not tilt due to the angle change when it swings upward, so as to achieve the effect of only being able to swing vertically up and down when the U-shaped support sleeve is limited by the damping rod;
[0019] 3. The multi-posture wheelchair described in the present invention cooperates with a soft seat cushion and a padded backrest to fit the patient's legs and back in position, and then stacks the patient's arms on both sides through the support pad, and at the same time cooperates with the lifting backboard to slide up and down on the surface of the limit rod one, so as to overlap and control the arms of different patients, and then swings on the two side surfaces of the soft seat cushion through the clamping support rod, and then the other end of the clamping support rod is sleeved on the surface of the limit fixing plate, so as to adjust the inclination angle of the padded backrest, so as to achieve the effect of adjustment and control according to the patient's needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention will be further described below in conjunction with the accompanying drawings.
[0021] Figure 1 is a stereogram of the present invention;
[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the keel support of the present invention from the side;
[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping support rod of the present invention;
[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixed ferrule of the present invention;
[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention;
[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the foot pedal of the present invention;
[0027] Figure 7 It is a schematic diagram of the swinging three-dimensional structure of the foot pedal of the present invention;
[0028] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the foot pedal of the present invention.
[0029] In the figure: 11, keel bracket; 111, cushion backrest; 112, fixing ring; a1, limit rod 1; a2, handle; a3, limit fixing plate; a4, lifting back plate; a5, swing arm; a6, support pad; a7, clamping support rod; 113, soft seat cushion; 114, main wheel; 115, auxiliary wheel; 116, motor; 12, foot pedal; 121, groove; 122, push rod; 123, limit baffle; 124, foot pad; 125, swing plate; 126, limit rod 2; 127, downward swing plate; 128, arc-shaped fitting groove; 129, limit arc plate; 1210, non-slip cushion; 1211, lower inclined groove; 13, fixed plate; 131, swing arm; 132, swing sleeve rod; 133, damping rod; 134, elastic buffer wire; 135, U-shaped support sleeve; 136, buffer roller. DETAILED DESCRIPTION
[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0031] like Figure 1 to Figure 2 and 6- Figure 8 As shown, a multi-posture wheelchair according to an embodiment of the present invention comprises a keel bracket 11 and a footrest 12 arranged on one side surface of the keel bracket 11, a fixing plate 13 fixedly mounted on the outer side surface of the keel bracket 11, an auxiliary wheel 115 is arranged on the outer side surface of the keel bracket 11, a groove 121 is arranged on the outer side surface of the footrest 12, an inner side wall surface of the groove 121 is movably sleeved with a push rod 122, and a limit baffle 123 movably overlapped on the outer side surface of the top of the footrest 12 is fixedly connected on the two side surfaces of the push rod 122, a footrest pad 124 is fixedly mounted on the top surface of the push rod 122, and the bottom of the footrest 12 A swing plate 125 is provided on the surface and at the edge of one side, a limiting rod 126 is movably sleeved on the outer surface of the swing plate 125, and both ends of the limiting rod 126 are fixedly connected with a downward-pressing swing plate 127, a lower inclined groove 1211 is provided on the bottom surface of the foot pedal 12, the bottom surface of the push rod 122 is movably overlapped on the top surface of the downward-pressing swing plate 127, an arc-shaped fitting groove 128 is provided on the bottom surface of the downward-pressing swing plate 127 and at the middle position, a limiting arc plate 129 is fixedly connected to the inner wall surface of the arc-shaped fitting groove 128, and an anti-slip pad 1210 is fixedly connected to the inner wall surface of the limiting arc plate 129.
[0032] When the footrest 12, the groove 121, the push rod 122, the foot pad 124, the swing plate 125, the downward-pressing swing plate 127, the arc-shaped fitting groove 128, the limit arc plate 129, the anti-skid soft pad 1210 and the auxiliary wheel 115 provided by the present invention are in use, when the wheelchair is naturally accelerated and slid on the slope, the better leg is used or one of the legs is lifted by the arm to impact and push the push rod 122 or the foot pad 124 on the outer surface of the footrest 12, and one end of the downward-pressing swing plate 127 passes through the swing plate 125. The push rod 122 is limited on the surface of the footrest 12, and the self-weight of the downward-pressing swing plate 127 will overlap the top surface of the auxiliary wheel 115. When the push rod 122 slides on the surface of the footrest 12, the push rod 122 will slide on one end of the inner wall surface of the groove 121. When the push rod 122 slides inside the groove 121, the lower inclined groove 1211 on the bottom surface of the footrest 12 presses the push rod 122 downward, so that the arc-shaped fitting groove 128 is sleeved on the top surface of the auxiliary wheel 115, and then the push rod 122 is pushed downward. The limiting arc plates 129 on the two side surfaces of the movable plate 127 are fitted on the two side edge positions of the auxiliary wheel 115, thereby controlling the downward angle and position of the downward pressing swing plate 127. As the push rod 122 is continuously pressed downward, the anti-skid pads 1210 on the inner wall of the limiting arc plates 129 are closely fitted on the top surface of the auxiliary wheel 115, thereby increasing the friction force on the rapidly rotating auxiliary wheel 115, thereby reducing the rotation speed of the auxiliary wheel 115, and achieving the goal of using the push rod 122 to push the downward pressing swing plate 127 to move the auxiliary wheel 115 downward. The anti-skid pad 1210 on the bottom surface of the swing plate 127 is pressed and fitted onto the top surface of the auxiliary wheel 115. As the swing plate 127 is pressed downward, the friction between the auxiliary wheel 115 and the swing plate 127 increases, thereby reducing the rotation speed of the auxiliary wheel 115, thereby preventing the main wheels on both sides of the wheelchair from rotating quickly. At this time, the arms cannot control the main wheels, and manual control can only be performed after the speed of the wheelchair is reduced. Under the action of inertia, the natural deceleration of the wheelchair will take a long time, and there will be many uncertain external factors in the whole process.
[0033] Furthermore, if Figure 1 - Figure 2 and Figure 5 As shown, a swing arm 131 is swingably sleeved on the outer surface of the fixed plate 13, a U-shaped support sleeve 135 is movably sleeved on one end of the swing arm 131, a buffer roller 136 is movably sleeved on one end of the U-shaped support sleeve 135, a swing sleeve rod 132 is movably sleeved on the outer surface of the swing arm 131, a damping rod 133 is fixedly connected to the outer surface of the swing sleeve rod 132, and an elastic buffer wire 134 arranged on the outer surface of the swing sleeve rod 132 is movably sleeved on the outer surface of the damping rod 133.
[0034] When the swing arm 131, the swing sleeve rod 132, the damping rod 133, the elastic buffer wire 134, the U-shaped support sleeve 135 and the buffer roller 136 provided by the present invention are in use, when the keel bracket 11 is moving, the buffer roller 136 contacts with the ground, and when the buffer roller 136 passes through a pothole, the up and down vibration generated by the U-shaped support sleeve 135 on the outer surface of the buffer roller 136 pushes the swing arm 131 upward with elastic force, so that the connection between the swing arm 131 and the fixed plate 13 swings up and down, and when the swing arm 131 pushes upward, it pushes the swing sleeve rod 132 on the top surface of the swing arm 131 with elastic force, and then cooperates with the damping rod 133 and the elastic buffer wire 134 on the outer surface of the swing sleeve rod 132 to The swing arm 131 is pushed upward to perform elastic buffering, and the position of the elastic buffer wire 134 is limited by the damping rod 133, so that when the buffer roller 136 is lifted upward, it will not tilt due to the angle change when swinging upward, thereby achieving the effect of only being able to swing vertically up and down when performing elastic buffering by utilizing the limited U-shaped support shell 135 of the damping rod 133, thereby avoiding the elastic buffer wire 134 from tilting when performing elastic buffering due to the lack of the damping rod 133, thereby causing the buffer roller 136 to tilt when performing up and down elastic buffering, thereby increasing the friction between the buffer roller 136 and the ground, causing side wear, and accelerating the wear of the buffer roller 136.
[0035] Furthermore, if Figure 1 - Figure 4 As shown, a soft cushion backrest 111 is arranged on the outer surface of the keel bracket 11, a soft seat cushion 113 is arranged on the top surface of the keel bracket 11, a motor 116 is arranged inside the keel bracket 11, and a main wheel 114 movably sleeved on the outer surface of the keel bracket 11 is fixedly connected to the output end of the motor 116, and the position of the auxiliary wheel 115 is arranged at the bottom edge of the footrest 12, and the outer surface of the auxiliary wheel 115 is arranged at the side edge of the main wheel 114, and the outer surface of the keel bracket 11 and the back of the soft cushion backrest 111 are arranged A fixed ring 112 is provided, on the outer surface of the fixed ring 112 a limit rod a1 is movably sleeved, on the top surface of the limit rod a1 a handle a2 is provided, on the outer surface of the fixed ring 112 a limit fixing plate a3 is provided, on the outer surface of the keel bracket 11 a clamping support rod a7 movably sleeved on the outer surface of the limit fixing plate a3 is provided, on the outer surface of the limit fixing plate a3 a lifting back plate a4 is movably sleeved, on the outer surface of the lifting back plate a4 a swing arm a5 is provided, on the top surface of the swing arm a5 a support pad a6 is provided.
[0036] When in use, the limit rod a1, limit fixing plate a3, lifting back plate a4, support pad a6, clamping support rod a7, soft seat cushion 113 and soft cushion backrest 111 provided by the present invention cooperate with the soft seat cushion 113 and the soft cushion backrest 111 to fit the patient's legs and back in position, and then the patient's arms on both sides are stacked in position through the support pad a6, and at the same time, the lifting back plate a4 slides up and down on the surface of the limit rod a1, so as to control the overlapping of the arms of different patients, and then the clamping support rod a7 is swung on the two side surfaces of the soft seat cushion 113, and then the other end of the clamping support rod a7 is sleeved on the surface of the limit fixing plate a3, and then the inclination angle of the soft cushion backrest 111 is adjusted, so as to achieve the effect of adjusting and controlling the needs of the patient.
[0037] The working principle of the present invention is as follows: the push rod 122 or the foot pad 124 on the outer surface of the foot pedal 12 is impacted and pushed, and one end of the downward-pressing swing plate 127 will overlap the top surface of the auxiliary wheel 115 due to its own gravity. When the push rod 122 slides on the surface of the foot pedal 12, the push rod 122 will slide on one end of the inner wall surface of the groove 121, and cooperate with the lower inclined groove 1211 on the bottom surface of the foot pedal 12 to squeeze the push rod 122 downward, so that the arc-shaped fitting groove 128 is sleeved on the top surface of the auxiliary wheel 115. As the push rod 122 continues to move, the push rod 122 Under downward pressure, the anti-skid pad 1210 on the inner wall of the limiting arc plate 129 is closely attached to the top surface of the auxiliary wheel 115, thereby increasing the friction force on the auxiliary wheel 115 which is rotating rapidly, thereby reducing the rotation speed of the auxiliary wheel 115, and achieving the effect of using the push rod 122 to push the downward pressing swing plate 127 downward, pressing the anti-skid pad 1210 on the bottom surface of the downward pressing swing plate 127 to fit the top surface of the auxiliary wheel 115, and increasing the friction force between the auxiliary wheel 115 and the auxiliary wheel 115 as the downward pressing swing plate 127 is continuously pressed, thereby reducing the rotation speed of the auxiliary wheel 115;
[0038] When the keel bracket 11 is moving, the buffer roller 136 contacts the ground. When the buffer roller 136 passes through a pothole, the up and down vibration is generated. The U-shaped support sleeve 135 on the outer surface of the buffer roller 136 pushes the swing arm 131 upward with elastic force, so that the connection between the swing arm 131 and the fixed plate 13 swings up and down. When the swing arm 131 pushes upward, it pushes the swing sleeve rod 132 on the top surface of the swing arm 131 with elastic force, and then cooperates with the damping rod 133 and the elastic buffer wire 134 on the outer surface of the swing sleeve rod 132 to elastically buffer the upward push of the swing arm 131. The position of the elastic buffer wire 134 is then limited by the damping rod 133, so that when the buffer roller 136 is lifted upward, it will not tilt due to the change in angle when swinging upward, so that the effect of only being able to swing vertically up and down when the U-shaped support sleeve 135 limited by the damping rod 133 is achieved.
[0039] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A multi-posture wheelchair, comprising a keel bracket (11) and a footrest (12) arranged on a side surface of the keel bracket (11), a fixing plate (13) fixedly mounted on an outer surface of the keel bracket (11), and auxiliary wheels (115) are arranged on the outer surface of the keel bracket (11), characterized in that: A groove (121) is provided on the outer surface of the foot pedal (12), and the inner wall surface of the groove (121) is movably sleeved with a push rod (122), and the two side surfaces of the push rod (122) are fixedly connected with a limit baffle (123) movably overlapped on the outer surface of the top of the foot pedal (12), and a foot pad (124) is fixedly installed on the top surface of the push rod (122). A swing plate (125) is provided on the bottom surface of the foot pedal (12) and at a side edge position, and a limit rod (126) is movably sleeved on the outer surface of the swing plate (125). , and the two ends of the second limiting rod (126) are fixedly connected with a downward pressing swing plate (127), a lower inclined groove (1211) is provided on the bottom surface of the foot pedal (12), the bottom surface of the pushing rod (122) is movably overlapped on the top surface of the downward pressing swing plate (127), an arc-shaped fitting groove (128) is provided on the bottom surface of the downward pressing swing plate (127) and at a middle position, a limiting arc plate (129) is fixedly connected to the inner wall surface of the arc-shaped fitting groove (128), and an anti-slip soft pad (1210) is fixedly connected to the inner wall surface of the limiting arc plate (129).
2. A multi-posture wheelchair according to claim 1, characterized in that: A swing arm (131) is swingably sleeved on the outer surface of the fixed plate (13), and a U-shaped supporting sleeve (135) is movably sleeved on one end of the swing arm (131).
3. A multi-posture wheelchair according to claim 2, characterized in that: A buffer roller (136) is movably sleeved on one end of the U-shaped support sleeve (135), and a swing sleeve rod (132) is movably sleeved on the outer surface of the swing arm (131).
4. A multi-posture wheelchair according to claim 3, characterized in that: A damping rod (133) is fixedly connected to the outer surface of the swing sleeve rod (132), and an elastic buffer wire (134) arranged on the outer surface of the swing sleeve rod (132) is movably sleeved on the outer surface of the damping rod (133).
5. A multi-posture wheelchair according to claim 4, characterized in that: A soft cushion backrest (111) is provided on the outer surface of the keel support (11), and a soft cushion (113) is provided on the top surface of the keel support (11).
6. A multi-posture wheelchair according to claim 5, characterized in that: A motor (116) is disposed inside the keel bracket (11), and a main wheel (114) movably sleeved on the outer surface of the keel bracket (11) is fixedly connected to the output end of the motor (116).
7. The multi-posture wheelchair according to claim 1, characterized in that: The auxiliary wheel (115) is arranged at the bottom edge of the foot pedal (12), and the outer surface of the auxiliary wheel (115) is arranged at one side edge of the main wheel (114).
8. A multi-posture wheelchair according to claim 7, characterized in that: A fixing ring (112) is provided on the outer surface of the keel bracket (11) and on the back side of the cushion backrest (111), and a limiting rod 1 (a1) is movably sleeved on the outer surface of the fixing ring (112).
9. A multi-posture wheelchair according to claim 8, characterized in that: A handle (a2) is provided on the top surface of the limit rod 1 (a1), a limit fixing plate (a3) is provided on the outer surface of the fixing ring (112), and a clamping support rod (a7) movably sleeved on the outer surface of the limit fixing plate (a3) is provided on the outer surface of the keel bracket (11).
10. A multi-posture wheelchair according to claim 9, characterized in that: A lifting back plate (a4) is movably sleeved on the outer surface of the limiting fixing plate (a3), a swing arm (a5) is arranged on the outer surface of the lifting back plate (a4), and a support pad (a6) is arranged on the top surface of the swing arm (a5).