A wheelchair body with multi-parameter adjustment

Abstract

The present invention relates to the technical field of medical equipment production, and discloses a multi-parameter adjustable wheelchair body, including a wheelchair body, the wheelchair body including a skeleton frame, a backrest and a footrest, and also including a template assembly seat, the seat cushion of the wheelchair body is composed of a number of modules, and each module corresponds to the template assembly seat one by one, and a driving unit is provided on the template assembly seat. The multi-parameter adjustable wheelchair body provided by the present invention is designed to adjust multiple parameters for depth, height and width, so as to ensure that the wheelchair body is suitable for the height requirements of each patient, thereby avoiding the consequences of inconvenience in operation, local squeezing, abnormal posture, etc. caused by inappropriate size when sitting or lying on the wheelchair body for a long time, and at the same time, the parameters are easy to adjust and the use is convenient. Compared with a customized wheelchair body, its procurement cost is greatly reduced, reducing the economic burden brought by the user's family using the wheelchair body.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment production, and in particular to a multi-parameter adjustable wheelchair body. Background Art

[0002] The wheelchair body consists of a frame, front and rear wheels, left and right knee pads and foot pedals, left and right detachable armrests, handle brake devices, seats, backrests and medical imaging data bags. It is an important mobile tool for home rehabilitation, turnover transportation, medical treatment and outdoor activities for the wounded, sick and disabled. The wheelchair body not only meets the transportation needs of the physically disabled and people with mobility difficulties, but more importantly, it is convenient for family members to move and take care of the patients, and it is an important tool for the patients to exercise and participate in social activities with the help of the wheelchair body.

[0003] With the continuous development of science and technology, wheelchairs can now be divided into two types: electric and manual folding wheelchairs.

[0004] However, during clinical use, we gradually discovered that due to the obvious differences in the height, leg length and upper body proportions of each patient, the wheelchair body is usually produced with fixed parameters, generally 41-43cm deep, 40-46cm wide, and 45-50cm high, and cannot be flexibly changed according to the patient's specific height. Sitting or lying for a short time has little effect on the patient's body, but for patients with hemiplegia or paralysis, sitting or lying for a long time will have a certain impact on the patient's use because the wheelchair body is not adapted to the patient's height parameters. For example, inappropriate sitting depth and height may cause excessive force on the buttocks, compression of the popliteal blood vessels, and difficulty in movement, thereby causing pressure sores, ischemia, and congestion.

[0005] It can be seen that this has become a problem that needs to be solved urgently at this stage! Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the above-mentioned problems existing in the prior art, one aspect of the present invention is to provide a wheelchair body with multi-parameter adjustment for adjusting the height, depth and width of the seat according to the patient's height and sitting habits.

[0008] To solve the above technical problems, the technical solution adopted in an embodiment of the present invention is: a multi-parameter adjustable wheelchair body, including a wheelchair body, the wheelchair body including a skeleton frame, a backrest and a footrest, and also including a template assembly seat, the seat cushion of the wheelchair body is composed of a number of modules, and each module corresponds to the template assembly seat one by one, the template assembly seat is provided with a driving unit, and the driving unit is composed of a first drive, a second drive and a third drive; the first drive works on the template assembly seat to move along the Z-axis direction of the seat cushion plate surface, and locks / releases at any height in this direction; the second drive works on the template assembly seat to move along the X-axis direction of the seat cushion plate surface, and locks / releases at any width in this direction; the third drive works on the template assembly seat to move along the Y-axis direction of the seat cushion plate surface, and locks / releases at any depth in this direction; the second drive and the third drive work together on the template assembly seat to move along the XY-axis direction of the seat cushion plate surface, and locks / releases at any depth and width in this direction.

[0009] Preferably, the second drive and the third drive are composed of a transmission box, in which a transmission sleeve and a transmission core rod axially sliding inside the transmission sleeve are movably arranged; the transmission sleeve consists of an A end and a B end distributed along the same axial direction, and when the transmission core rod is locked in the A end, the second drive is operated; when the transmission core rod is locked in the B end, the third drive is operated; when the transmission core rod is locked in the A end and the B end, the second drive and the third drive are operated at the same time.

[0010] Preferably, the number of the skeleton frames is two, and they are symmetrically distributed on both sides of the outer wall of the template assembly seat along the X-axis direction of the wheelchair body seat cushion plate surface; the rear backrest is composed of independent arc plates that are plugged into each other, and the two arc plates are respectively installed on the outer walls of the adjacent sides of the two skeleton frames; wherein the two skeleton frames maintain synchronous Y-axis movement with the template assembly seat, and the diameter of the rear backrest formed by the two arc plates increases as the distance between the two skeleton frames increases.

[0011] Preferably, a base is provided directly below the seat cushion plate of the wheelchair main body, and a manual hydraulic telescopic rod for driving the template assembly seat to complete the first workstation is provided at the center of the top of the base; curved rods are axially connected to the outer walls of the two skeleton frames, and the universal balls at the tail ends of the two curved rods are symmetrically connected to the ball grooves on the outer wall of one side of the base; side wings are provided on the outer walls of the two skeleton frames close to the rear backrest, and the side wings are slidably connected to the top of the outer wall of the base on the side away from the curved rod; the shaft of the rear wheel of the wheelchair main body is installed on the outer wall of the base on the side away from the curved rod.

[0012] Preferably, short beams are symmetrically arranged between the two skeleton frames for synchronously extending with the extension of the rear backrest; the short beams are composed of a scale tube body and an identification tube body, one end of the scale tube body is provided with a scale, and the radius of the end with the scale is smaller than the radius of the end without the scale, one end of the identification tube body is a hollow structure, and an observation window is arranged on the outer wall; the end of the scale tube body provided with the scale is inserted into the end of the identification tube body provided with the observation window.

[0013] Preferably, the template combination seat includes combination panel I, combination panel II, combination panel III and combination panel IV, and the number of combination panel II and combination panel IV is two; the two combination panels II are distributed on both sides of the combination panel I and are in the same horizontal plane with the combination panel I; the two combination panels IV are distributed on the combination panel III and are in the same horizontal plane with the combination panel III; the seat cushion plate of the wheelchair body is respectively installed on the top of the combination panel I, the two combination panels II, the combination panel III and the two combination panels IV, and each module connection is fixedly connected with a nylon belt.

[0014] Preferably, a transmission gear disk is axially connected at the center of the top of the combination plate I, and a guide seat symmetrically distributed about the transmission gear disk is fixedly installed on the top of the combination plate I; no less than three bridge blocks I are installed in sequence along the Y-axis direction on one side of the two combination plates II close to the top of the combination plate I, and pillow blocks are fixedly installed on the outer walls of the adjacent sides of the two groups of bridge blocks I, and guide rails are symmetrically arranged on the outer walls of the adjacent sides of the two pillow blocks; the partition plate arranged at the inner center of the guide seat divides the interior into two rectangular cavities of equal specifications, and the two guide rails located on the same water surface as one of the guide seats are respectively inserted into the two rectangular cavities; the two combination plates II close to the top of the combination plate I are respectively installed with guide tooth plates extending to the top of the combination plate I, and the two guide tooth plates are respectively fixedly connected to the outer walls of the adjacent sides of the two guide seats, and are both engaged with the transmission gear disk.

[0015] Preferably, a bridge seat II is fixedly installed on the top of the inner side of the two combined plates IV, a guide block is fixedly installed on the top of the combined plate II on the side adjacent to the combined plate IV, and a connecting strip I is provided on the outer wall of one side of the two bridge seats II, which penetrates and extends to the outside of the guide block; a reinforcing block is provided on the top of the combined plate III, and connecting strips II are fixedly installed on the outer walls on both sides of the reinforcing block, and the connecting strip II is slidably connected to the inside of the bridge seat II; a bridge seat III is fixedly installed on the top of the combined plate I on the side adjacent to the combined plate III, and a plurality of connecting shafts distributed in a linear array are fixedly installed on the outer wall of the reinforcing block on the side adjacent to the combined plate I, and the connecting shafts penetrate the inside of the bridge seat III and the two guide seats in sequence; wherein, one end of the connecting shaft located inside the guide seat is located above the guide rail and does not contact the upper surface of the guide rail; guide running plates are symmetrically provided at the center of the outer wall of the reinforcing block on the side adjacent to the bridge seat III, and a tooth mouth is provided in one of the guide running plates, and one end of the two guide running plates is slidably connected to the inside of the bridge seat III.

[0016] Preferably, a base is fixedly installed at the center of the outer wall of one side of the combined plate I away from the combined plate III; a transmission core rod is connected to the inner shaft of the base and moves axially, and an eccentric handle which can be retracted along the axial direction is provided on the outer wall of the base opposite to the combined plate I, and the eccentric handle is connected to the transmission core rod; the transmission core rod is located on the outer wall of one end of the base and is sleeved with a trapezoidal guide block, a screw rod and an auxiliary parallel rod symmetrically distributed about the transmission core rod are provided between the inner walls of the base, a claw member is slidably connected between the screw rod and the auxiliary parallel rod, the claw member is threadedly connected to the screw rod, and is acted upon by the screw rod to push the trapezoidal guide block in the horizontal direction to maintain synchronous movement, and one end of the screw rod passes through and extends to the outside of the base and is provided with a knob switch; a transmission box is fixedly installed at the midline of the inner top of the combined plate I, and A of the transmission sleeve rod Transmission gears are provided on the A end and the B end, and the bottom symmetrical axis of the transmission box is connected to a transmission shaft, and one end of the two transmission shafts located inside the transmission box is provided with a passive gear respectively meshed with the two transmission gears, one end of one of the transmission shafts is fixedly mounted with a trapezoidal gear, and the trapezoidal gear is meshed with the transmission gear plate, and one end of the other transmission shaft is fixedly mounted with a circular gear, and the circular gear is slidably connected in the grooves of the two guide traveling plates, and meshed with one of the guide traveling plates with a toothed opening.

[0017] Preferably, an inner wall of the adjacent ends of the A and B ends of the transmission sleeve is provided with an internal tooth sleeve, and the cross-section of the racks at both ends of the internal tooth sleeve is circular; the top of the transmission core rod is axially connected with gear A and gear B in sequence, and the cross-section of the racks at both ends of the gear A and gear B is circular, and ratchets are provided in the grooves at the bottom ends of the gears A and B, and a pawl ring is fixedly sleeved on the outer wall of the top end of the transmission core rod, and the pawl ring is located on the outside of the ratchet and cooperates with the ratchet, wherein when the gear A is located in the A end, the A end keeps rotating synchronously; when the gear B is located in the B end, the B end keeps rotating synchronously; when the gears A and gear B are located in the A end and the B end at the same time, the transmission sleeve rotates synchronously.

[0018] Preferably, a method for adjusting the parameters of a wheelchair body is provided, the method comprising the following steps:

[0019] S1. When adjusting the depth of the wheelchair body:

[0020] a1. Rotate the knob switch clockwise and make the pointer point to the end of the arc guide set on the machine base. At this time, the claw member pushes the trapezoidal guide block to make the transmission core rod move along the inner wall of the transmission sleeve rod and finally stop in the B end;

[0021] a2. Rotate the elastic eccentric handle clockwise, the transmission core rod drives the transmission sleeve rod to keep rotating synchronously, the toothed guide advancing plate is driven by the circular gear to move the combination plate III away from the combination plate I, and the connecting shaft rod is pulled by the bridge seat III to keep moving synchronously on the guide seat, while the bridge seat II is pulled by the connecting strip II on the bridge seat III, so that the two combination plates IV keep moving synchronously with the combination plate III, and the connecting strip I is synchronously moved on the guide block by the movement of the combination plate IV.

[0022] S2. When adjusting the width of the wheelchair body:

[0023] a1. Rotate the knob switch counterclockwise and clockwise, and make the pointer point to the other end of the arc guide set on the machine base. At this time, the claw member pushes the trapezoidal guide block to make the transmission core rod move along the inner wall of the transmission sleeve rod and finally stop in the A end;

[0024] a2. Rotate the elastic eccentric handle clockwise, the transmission core rod drives the transmission sleeve rod to keep rotating synchronously, and the transmission gear plate is driven by the trapezoidal gear to make the two combination plates II and the two combination plates IV move to the two sides of the combination plate I at the same time;

[0025] The guide tooth plates on the two combined plates II are moved to both sides by the sequential rotation of the transmission toothed discs, while the guide rails on both sides move to both sides from the inside of the guide seat;

[0026] The connecting strips I on the two combined plates IV are pulled by the guide blocks to keep synchronous movement with the two combined plates II, while the connecting strips II extend from the inside of the bridge seat II.

[0027] S3. When adjusting the width and depth of the wheelchair body at the same time:

[0028] a1. Rotate the knob switch counterclockwise and clockwise, and make the pointer point to the middle of the arc guide set on the machine base. At this time, the claw member pushes the trapezoidal guide block to make the transmission core rod move along the inner wall of the transmission sleeve rod, and finally stop between the A end and the B end;

[0029] a2. Rotate the elastic eccentric handle clockwise, and the transmission core rod drives the transmission sleeve rod to keep rotating synchronously, so that the transmission gear plate is driven by the trapezoidal gear and the toothed guide plate is driven by the circular gear, completing step a2 in S1 and step a2 in S2.

[0030] S4. When adjusting the height of the wheelchair body: manually drive the manual hydraulic telescopic rod to move the combination plate I upward, so that the template combination seat is separated from the frame, and the curved rod and the side wing extend in the vertical direction.

[0031] Compared with the prior art, the embodiment of the present invention provides a wheelchair body with multi-parameter adjustment. The wheelchair body design performs multiple parameter adjustments on depth, height and width, thereby ensuring that the wheelchair body is suitable for the height requirements of each patient, thereby avoiding the problem of physical discomfort caused to the patient due to long-term sitting or lying on the wheelchair body due to long-term curling.

[0032] And with respect to the parameter adjustment of the wheelchair body, the depth and width of the wheelchair body can be adjusted at the same time, or they can be adjusted separately.

[0033] It is easy to operate and use. Compared with customized wheelchair bodies, its procurement cost is greatly reduced, which reduces the economic burden brought by the patient's family members using the wheelchair body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the state structure of the seat cushion module of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the transmission part at the rear side of the wheelchair body of the present invention;

[0037] Figure 4 Schematic diagram of the connection structure between the skeleton frame and the base of the present invention

[0038] Figure 5 This is a schematic diagram of the overall structure of the template assembly seat of the present invention;

[0039] Figure 6 This is a schematic diagram of the connection relationship between the combined panels I and II of the present invention;

[0040] Figure 7 It is a schematic diagram of the structure of the combined plate I, the combined plate III and the combined plate IV of the present invention;

[0041] Figure 8 This is a schematic diagram of the cross-sectional structure of the reinforcement block of the present invention;

[0042] Fig. 9 It is a schematic diagram of the internal transmission structure of the transmission box of the present invention;

[0043] Fig.10 This is a schematic diagram of the gear structure for adjusting the bottom depth and width of the transmission box of the present invention;

[0044] Fig.11 It is a schematic diagram of the structure of the meshing relationship between the driving gears of the combined plate I and the combined plate II of the present invention;

[0045] Fig.12 This is a schematic diagram of the meshing relationship between the drive gears of the combined plate I and the combined plate III of the present invention;

[0046] Fig.13 It is a schematic diagram of the cross-sectional structure of the guide seat of the present invention;

[0047] Fig.14 It is a schematic diagram of the cross-sectional structure of the transmission box of the present invention;

[0048] Fig.15 It is a schematic diagram of the overall structure of the transmission box of the present invention;

[0049] Fig.16 It is a schematic diagram of the transmission core rod structure in the first embodiment of the present invention;

[0050] Fig.17 is a schematic diagram of the cross-sectional structure of a transmission sleeve rod in a first embodiment of the present invention;

[0051] Fig.18 Schematic diagram of the structure of the driving gear A in the first embodiment of the present invention;

[0052] Fig.19 Schematic diagram of the structure of the driving gear B in the first embodiment of the present invention;

[0053] Fig. 20 This is a schematic diagram of the cross-sectional structure of the transmission core rod in the first embodiment of the present invention;

[0054] Fig.21 Schematic diagram of the transmission core rod structure in the second embodiment of the present invention;

[0055] Fig. 22 is a schematic diagram of the cross-sectional structure of a transmission sleeve rod in a second embodiment of the present invention;

[0056] Fig.23 A schematic diagram of the cross-sectional structure of an expansion casing in a third embodiment of the present invention;

[0057] Fig.24 Schematic diagram of the cross-sectional structure of the transmission core rod and the transmission sleeve rod after matching in the third embodiment of the present invention

[0058] Fig.25 It is a schematic diagram of the cross-sectional structure of the transmission core rod and the elastic handle after they are matched in the third embodiment of the present invention.

[0059] In the figure: 1, wheelchair body; 11, armrest; 12, backrest; 13, scale plate; 14, footrest; 15, skeleton frame; 2, template assembly seat; 21, assembly plate I; 211, guide seat; 2111, rectangular through cavity; 212, transmission gear plate; 213, guide tooth plate; 214, bridge seat III; 215, connecting shaft rod; 216, connecting strip II; 22, assembly plate II; 221, bridge block I; 222, pillow block; 223, guide rail; 224, guide block; 23, assembly plate III; 231, reinforcement block; 2310, guide running plate; 24, assembly plate IV; 241. Bridge seat II; 242. Connecting strip; 3. Nylon belt; 4. Base; 41. Side wing; 42. Crank rod; 5. Transmission box; 51. Transmission sleeve rod; 52. Transmission gear; 53. Transmission shaft; 54. Passive gear; 55. Trapezoidal gear; 56. Circular gear; 6. Machine base; 61. Elastic eccentric handle; 62 Screw rod; 63. Auxiliary parallel rod; 64. Claw piece; 65. Knob switch; 7. Transmission core rod; 71. Trapezoidal guide block; 72. Gear A; 73. Gear B; 74. Ratchet; 75. Ratchet; 72a. Tenon; 73a. Expansion core tube; 72b. Expansion core rod; 8. Short beam; 81. Scale tube body; 82. Marking tube body; 9. Manual hydraulic telescopic rod. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0061] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0062] like Figures 1 to 25 As shown, the present invention provides a multi-parameter adjustable wheelchair body, including a wheelchair body 1, including a skeleton frame 15, a backrest 12 and a footrest 14, and improves the existing wheelchair structure to be suitable for the implementation of the embodiment of the present invention. Figure 1-4 It can be seen that the skeleton frame 15 is designed as two independent side skeletons from the original overall structure, and is symmetrically distributed on both sides of the outer wall of the template assembly seat 2 along the X-axis direction of the seat cushion plate surface of the wheelchair body 1, and the backrest 12 is composed of independent arc-shaped plates plugged into each other, and the two arc-shaped plates are respectively installed on the outer walls of the adjacent sides of the two skeleton frames 15. In other words, when the two skeleton frames 15 keep synchronous Y-axis movement with the template assembly seat 2 (the skeleton frame 15 is installed on the assembly plate II22), the plate diameter of the backrest 12 composed of the two arc-shaped plates increases as the distance between the two skeleton frames 15 increases.

[0063] Further, in order to ensure the stability of the backrest 12, according to Figure 3 It can be seen that a short beam 8 is symmetrically arranged between the two skeleton frames 15 for extending synchronously with the extension of the backrest 12. The short beam 8 is composed of a scale tube 81 and an identification tube 82. One end of the scale tube 81 is provided with a scale, and the radius of the end with the scale is smaller than the radius of the end without the scale. One end of the identification tube 82 is a hollow structure, and the outer wall is provided with an observation window. The end of the scale tube 81 with the scale is plugged into the end of the identification tube 82 with the observation window. That is to say, when the two skeleton frames 15 keep moving away from each other, the short beam 8 and the backrest 12 extend synchronously, and the current extension data is obtained through the observation window. (Due to the split design of the backrest 12, the surface of the backrest 12 is covered with a nylon cover)

[0064] Furthermore, according to Figure 4It can be seen that a base 4 is provided just below the seat cushion of the wheelchair body 1, and a curved rod 42 is axially connected to the outer walls of the two skeleton frames 15. The universal balls at the tail ends of the two curved rods 42 are symmetrically connected to the ball grooves on the outer wall of one side of the base 4. Side wings 41 are provided on the outer walls of the two skeleton frames 15 close to the rear backrest 12. The side wings 41 are slidably connected to the top of the outer wall of the base 4 away from the curved rod 42. The shaft of the rear wheel of the wheelchair body 1 is installed on the outer wall of the base 4 away from the curved rod 42.

[0065] In order to ensure the stability of the entire wheelchair after being disassembled, the connected base 4 is used to ensure that the entire wheelchair can maintain overall ductility when the two skeleton frames 15 move away from each other.

[0066] In addition, in order to accommodate some patients with longer legs, the foot pedal 14 here is plug-in-designed with the skeleton frames 15 on both sides, and the foot pedal 14 is also plug-in-designed (composed of a rod body a and a rod body b plugged into one end of the rod body a, and presenting a "U"-shaped structure), which can extend or contract as the skeleton frame 15 maintains the divergent movement, and after the contraction is completed, the rod body b needs to be fixed with the fixing screws on the rod body a so that the entire foot pedal 14 forms a stable structure.

[0067] Furthermore, the armrest 11 also adopts a plug-in design, and can be manually adjusted through screws on the two skeleton frames 15 as needed to adapt to the height of the current guardian.

[0068] As a further technical solution provided by the invention, according to Figure 1-4 It can be known that the seat cushion of the wheelchair body 1 including the template assembly seat 2 is composed of a number of modules, and each module corresponds to the template assembly seat 2 one by one. The template assembly seat 2 is provided with a driving unit, and the driving unit is composed of a first drive, a second drive and a third drive: the first drive works on the template assembly seat 2 to move along the Z-axis direction of the seat cushion surface, and lock / release at any height in this direction; the second drive works on the template assembly seat 2 to move along the X-axis direction of the seat cushion surface, and lock / release at any width in this direction; the third drive works on the template assembly seat 2 to move along the Y-axis direction of the seat cushion surface, and lock / release at any depth in this direction; the second drive and the third drive work on the template assembly seat 2 together to move along the XY-axis direction of the seat cushion surface, and lock / release at any depth and width in this direction.

[0069] Further integration Figure 5-8As shown, it can be seen that in some embodiments, the template assembly seat 2 includes a combination plate I21, a combination plate II22, a combination plate III23 and a combination plate IV24, and the number of combination plates II22 and IV24 is two; wherein, the two combination plates II22 are distributed on both sides of the combination plate I21 and are in the same horizontal plane as the combination plate I21; wherein, the two combination plates IV24 are distributed on the combination plate III23 and are in the same horizontal plane as the combination plate III23; in addition, the seat cushion plate of the wheelchair body 1 is respectively installed on the top of the combination plate I21, the two combination plates II22, the combination plate III23 and the two combination plates IV24, and each module connection is fixedly connected with a nylon belt 3 to prevent the cushion from being clamped when the module moves.

[0070] Further, according to Figure 6 and Figure 8It can be known that the second drive is used to work on the template assembly seat 2, so that it moves along the X-axis direction of the cushion plate surface and is locked / released at any width in this direction. The specific structure of the template assembly seat 2 that realizes width change is as follows: a transmission gear disc 212 is axially connected to the center of the top of the assembly plate I21, and a guide seat 211 symmetrically distributed about the transmission gear disc 212 is fixedly installed on the top of the assembly plate I21. A number of not less than three bridge blocks I221 are sequentially installed on one side of the two assembly plates II22 close to the top of the assembly plate I21 along the Y-axis direction, and pillow blocks 222 are fixedly installed on the outer walls of the adjacent sides of the two groups of bridge blocks I221, and guide rails 223 are symmetrically arranged on the outer walls of the adjacent sides of the two pillow blocks 222. Furthermore, the partition plate arranged at the inner center of the guide seat 211 divides the inner part into two rectangular through cavities 2111 of equal specifications, and two guide rails 223 located on the same water surface as one of the guide seats 211 are respectively inserted into the two rectangular through cavities 2111; at the same time, the two combined plates II22 are respectively installed with guide tooth plates 213 extending to the top of the combined plate I21 on one side close to the top of the combined plate I21, and the two guide tooth plates 213 are respectively fixedly connected to the outer wall of the adjacent side of the two guide seats 211, and both are meshed with the transmission gear disc 212. In addition, the top of the inner side of the two combined plates IV24 is respectively fixedly installed with a bridge seat II241, and the top of the side of the combined plate IV24 adjacent to the combined plate II22 is fixedly installed with a guide block 224, and the outer wall of one side of the two bridge seats II241 is provided with a connecting strip I242 that penetrates and extends to the outside of the guide block 224. It should be noted that when the width needs to be changed, the divergent movement of the guided tooth plate 213 causes the two combined plates II22 to move to both sides, and the guide rail 223 slides in the guide seat 211. At the same time, due to the pulling action of the guide block 224, the combined plate IV24 will move synchronously with the movement of the combined plate II22. In the process of movement, the connecting strip II216 located inside the guide block 224 will gradually separate from the inside of the guide block 224. The width adjustment parameter is 32-53cm (the current extension data is obtained through the observation window).

[0071] Further, according to Figure 7It can be known that the third drive is used to work on the template assembly seat 2, so that it moves along the Y-axis direction of the seat cushion plate surface and locks / releases it at any depth in this direction. In fact, the specific structure of the template combination seat 2 with changed depth is as follows: a reinforcing block 231 is arranged on the top of the combination plate III23, and connecting strips II216 are fixedly installed on the outer walls on both sides of the reinforcing block 231, and the connecting strips II216 are slidably connected to the inside of the bridge seat II241. Furthermore, a bridge seat III214 is fixedly installed on the top of the combination plate I21 adjacent to the combination plate III23, and a plurality of connecting shafts 215 distributed in a linear array are fixedly installed on the outer wall of the side of the combination plate I21 adjacent to the reinforcing block 231, and the connecting shafts 215 pass through the inside of the bridge seat III214 and the two guide seats 211 in sequence; at the same time, one end of the connecting shaft 215 located inside the guide seat 211 is located above the guide rail 223 and does not contact the upper surface of the guide rail 223, and a guide running plate 2310 is symmetrically arranged at the center of the outer wall on one side of the bridge seat III214 adjacent to the reinforcing block 231, and one of the guide running plates 2310 is provided with a tooth mouth, and one end of the two guide running plates 2310 is slidably connected to the inside of the bridge seat III214. It should be noted that when the depth needs to be changed, the length of the guided traveling plate 2310 located inside the bridge seat III214 is decelerated, and the combined plate III23 moves away from the combined plate I21. At the same time, due to the pulling effect of the connecting strip II216, the combined plate IV24 will move synchronously with the movement of the combined plate III23. In the process of movement, the connecting strip I242 will gradually detach from the inside of the guide block 224. By observing the scale plate 13 (such as Figure 2 The depth adjustment data can be obtained by using the transmission box 5, and the depth adjustment parameter is 35-52cm. Further, in the specific implementation process, the second drive and the third drive are composed of a transmission box 5, in which a transmission sleeve 51 and a transmission core rod 7 that slides axially along the transmission sleeve 51 are movably arranged; the transmission sleeve 51 is composed of an A end and a B end distributed along the coaxial direction, and when the transmission core rod 7 is locked in the A end, the second drive is operated; when the transmission core rod 7 is locked in the B end, the third drive is operated; when the transmission core rod 7 is locked in the A end and the B end, the second drive and the third drive are operated at the same time.

[0072] The first drive is realized by a manual hydraulic telescopic rod 9 for driving the template assembly seat 2, which is provided at the center of the top of the base 4, and the output end of the manual hydraulic telescopic rod 9 is installed on the center line of the bottom of the assembly board 121. The manual lifting of the manual hydraulic telescopic rod 9 applies force to the template assembly seat 2. At the same time, since the curved rod 42 and the side wing 41 are telescopic structures, they will rise as the template assembly seat 2 rises (according to Figure 3 It can be seen that by observing the scale plate 13 (such as Figure 4As shown), the height adjustment data can be obtained, and the height adjustment parameter is 42-55cm.

[0073] In the present invention, according to Figure 3 , Fig.10 , Fig.11 , Fig.12 , Fig.14 and Fig.15 It can be seen that the second and third drive specific structural designs in the invention are as follows: a base 6 is fixedly installed at the center of the outer wall of the side of the combined plate I21 away from the combined plate III23, and the inner shaft of the base 6 is connected to a transmission core rod 7 that moves axially. The outer wall of the base 6 on the side opposite to the combined plate I21 is provided with an eccentric handle 61 that can be extended and retracted along the axial direction, and the eccentric handle 61 is connected to the transmission core rod 7. Furthermore, according to Fig.14 It can be seen that a trapezoidal guide block 71 is sleeved on the outer wall of the transmission core rod 7 located at one end of the inside of the machine base 6, and a screw rod 62 and an auxiliary parallel rod 63 are provided between the inner walls of the machine base 6, and a claw member 64 is slidably connected between the screw rod 62 and the auxiliary parallel rod 63. The claw member 64 is threadedly connected to the screw rod 62, and is acted upon by the screw rod 62 to push the trapezoidal guide block 71 in a horizontal direction to maintain synchronous movement. One end of the screw rod 62 passes through and extends to the outside of the machine base 6, and a knob switch 65 is provided. Furthermore, a transmission box 5 is fixedly installed at the center line of the inner top of the combined plate I21, and transmission gears 52 are provided on the A end and the B end of the transmission sleeve 51. The bottom symmetry axis of the transmission box 5 is connected to a transmission shaft 53, and one end of the two transmission shafts 53 located inside the transmission box 5 is provided with a passive gear 54 respectively meshed with the two transmission gears 52. One end of one of the transmission shafts 53 is fixedly installed with a trapezoidal gear 55, and the trapezoidal gear 55 is meshed with the transmission gear plate 212. One end of the other transmission shaft 53 is fixedly installed with a circular gear 56, and the circular gear 56 is slidably connected in the grooves of the two guide traveling plates 2310 and meshed with one of the guide traveling plates 2310 with teeth.

[0074] Furthermore, the present invention provides three switching systems for switching the second drive and the third drive:

[0075] according to Figure 16-20 It can be seen that, as the first embodiment provided by the present invention, the inner wall of the adjacent end of the A end and the B end of the transmission sleeve 51 is provided with an internal tooth sleeve 76, and the cross section of the racks at both ends of the internal tooth sleeve 76 is circular. The top of the transmission core rod 7 is axially connected with a gear A72 and a gear B73 in sequence, and the cross section of the racks at both ends of the gear A72 and the gear B73 is circular. The grooves at the bottom ends of the gears A72 and B73 are provided with ratchet wheels 74, and the outer wall at the top end of the transmission core rod 7 is fixedly sleeved with a ratchet ring 75, which is located on the outside of the ratchet wheel 74 and cooperates with the ratchet wheel 74.

[0076] Among them, when gear A72 is located in end A, end A keeps rotating synchronously; when gear B73 is located in end B, end B keeps rotating synchronously; when gear A72 and gear B73 are located in end A and end B at the same time, transmission sleeve 51 rotates synchronously.

[0077] according to Figure 21-22 It can be seen that, as the second embodiment provided by the present invention, the inner walls of the A end and the B end of the transmission sleeve 51 are provided with an expansion inner core tube I, an expansion inner core tube II and an expansion inner core tube III in sequence from the adjacent end to the inside; a tenon 72a is provided on the top of the transmission core rod 7; when the tenon 72a is located in the expansion inner core tube I, the transmission sleeve 51 keeps rotating synchronously; when the tenon 72a is located in the expansion inner core tube II, the A end keeps rotating synchronously; when the tenon 72a is located in the expansion inner core tube III, the B end keeps rotating synchronously.

[0078] It should be noted that the protrusion in the expansion core tube is an elastic metal block, and the two ends of the tenon 72a are made of metal material and the middle is made of rubber material.

[0079] according to Figure 23-25 It can be seen that, as the third embodiment provided by the present invention, the transmission core rod 7 is specifically a hollow structure, and the tail end is a conventional expansion tube design, and is located in the transmission sleeve rod 51; the spring on the elastic handle 61 is a tension spring, and the tail end is welded with an expansion core rod 72a located in the transmission core rod 7. When the expandable end of the transmission core rod 7 is located at the A end, the elastic handle 61 is pulled outward to expand the transmission core rod 7 and lock it, so that the A end keeps rotating synchronously; when the expandable end of the transmission core rod 7 is located between the A end and the B end, the elastic handle 61 is pulled outward to expand the transmission core rod 7 and lock it, so that the A end and the B end keep rotating synchronously; when the expandable end of the transmission core rod 7 is located at the B end, the elastic handle 61 is pulled outward to expand the transmission core rod 7 and lock it, so that the B end keeps rotating synchronously.

[0080] Combination Figure 1-15 As shown, the method for adjusting the parameters of the wheelchair body provided by the invention comprises the following steps:

[0081] S1. When adjusting the depth of the wheelchair body 1: a1. Rotate the knob switch 65 clockwise and make the pointer point to the end of the arc guide set on the machine base 6. At this time, the claw member 64 pushes the trapezoidal guide block 71 to make the transmission core rod move along the inner wall of the transmission sleeve rod 51 and finally stay in the B end; a2. Rotate the elastic eccentric handle 61 clockwise, the transmission core rod 7 drives the transmission sleeve rod 51 to keep rotating synchronously, and the toothed guide running plate 2310 is driven by the circular gear 56 to make the combination plate III23 move away from the combination plate I21. Under the traction of the bridge seat III214, the connecting shaft 215 will be located on the guide seat 211 and keep moving synchronously, and the bridge seat II241 is pulled by the connecting strip II216 on the bridge seat III214, so that the two combination plates IV24 keep moving synchronously with the combination plate III23, and the connecting strip I242 is synchronously located on the guide block 224 and moves under the movement of the combination plate IV24.

[0082] S2. When adjusting the width of the wheelchair body 1: a1. Rotate the knob switch 65 counterclockwise and clockwise, and make the pointer point to the other end of the arc guide set on the base 6. At this time, the claw member 64 pushes the trapezoidal guide block 71 to make the transmission core rod move along the inner wall of the transmission sleeve rod 51 and finally stop in the A end; a2. Rotate the elastic eccentric handle 61 clockwise, the transmission core rod 7 drives the transmission sleeve rod 51 to keep rotating synchronously, and the transmission gear plate 212 is driven by the trapezoidal gear 55, so that the two combination plates II22 and the two combined plates IV24 move to both sides of the combined plate I21 at the same time; the guide tooth plates 213 on the two combined plates II22 move to both sides due to the sequential rotation of the transmission gear plates 212, and the guide rails 223 on both sides move to both sides from the inside of the guide seat 211; the connecting strips I242 on the two combined plates IV24 are pulled by the guide blocks 224 and keep synchronous movement with the two combined plates II22, and the connecting strips II216 extend from the inside of the bridge seat II241.

[0083] S3. When adjusting the width and depth of the wheelchair body 1 at the same time: a1. Rotate the knob switch 65 counterclockwise and clockwise, and make the pointer point to the middle of the arc guide set on the base 6. At this time, the claw member 64 pushes the trapezoidal guide block 71 to make the transmission core rod move along the inner wall of the transmission sleeve rod 51, and finally stop between the A end and the B end; a2. Rotate the elastic eccentric handle 61 clockwise, the transmission core rod 7 drives the transmission sleeve rod 51 to keep rotating synchronously, so that the transmission gear plate 212 is driven by the trapezoidal gear 55 and the toothed guide plate 2310 is driven by the circular gear 56, completing step a2 in S1 and step a2 in S2.

[0084] S4. When adjusting the height of the wheelchair body 1: manually drive the manual hydraulic telescopic rod 9 to move the assembly plate 121 upward, so that the template assembly seat 2 is separated from the frame, and the curved rod 42 and the side wing 41 extend in the vertical direction.

[0085] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A multi-parameter adjustable wheelchair body, comprising a wheelchair body (1), wherein the wheelchair body (1) comprises a skeleton frame (15), a backrest (12) and a footrest (14), characterized in that: It also comprises a template assembly seat (2), wherein the seat cushion of the wheelchair body (1) is composed of a plurality of modules, and each module corresponds to the template assembly seat (2) one by one, and the template assembly seat (2) is provided with a drive unit, and the drive unit consists of a first drive, a second drive and a third drive; The first drive operates the template assembly seat (2) to move along the Z-axis direction of the seat cushion plate surface and lock / release it at any height in the direction; The second drive operates the template assembly seat (2) to move along the X-axis direction of the seat cushion plate surface and lock / release it at any width in this direction; The third drive operates the template assembly seat (2) to move along the Y-axis direction of the seat cushion plate surface and lock / release it at any depth in this direction; The second drive and the third drive work together toward the template assembly seat (2), so that it moves along the XY axis direction of the seat cushion plate surface, and locks / releases it at any depth and width in this direction; The number of the skeleton frames (15) is two, and they are symmetrically distributed on both sides of the outer wall of the template assembly seat (2) along the X-axis direction of the seat cushion plate surface of the wheelchair body (1); The rear backrest (12) is composed of independent arc-shaped plates plugged into each other, and the two arc-shaped plates are respectively installed on the outer walls of the adjacent sides of the two skeleton frames (15); The two skeleton frames (15) move synchronously with the template assembly seat (2) in the Y-axis direction, and the diameter of the backrest (12) formed by the two arc-shaped plates increases as the distance between the two skeleton frames (15) increases; A base (4) is provided directly below the cushion plate of the wheelchair body (1), and a manual hydraulic telescopic rod (9) for driving the template assembly seat (2) to complete the first workstation is provided at the center of the top of the base (4); The outer walls of the two skeleton frames (15) are axially connected with curved rods (42), and the universal balls at the tail ends of the two curved rods (42) are symmetrically connected to the ball grooves of the outer wall of one side of the base (4); The two skeleton frames (15) are each provided with a side wing (41) on the outer wall close to the backrest (12), and the side wing (41) is slidably connected to the top of the outer wall of the base (4) away from the curved rod (42); The shaft of the rear wheel of the wheelchair body (1) is mounted on the outer wall of the base (4) on a side away from the curved rod (42); A short beam (8) is symmetrically arranged between the two skeleton frames (15) and is used to extend synchronously with the extension of the rear backrest (12); The short beam (8) is composed of a scale tube body (81) and a marking tube body (82); one end of the scale tube body (81) is provided with a scale, and the radius of the end provided with the scale is smaller than the radius of the end without the scale; one end of the marking tube body (82) is a hollow structure, and the outer wall is provided with an observation window; One end of the scale tube body (81) provided with a scale is inserted into one end of the marking tube body (82) provided with an observation window; The template assembly seat (2) comprises an assembly plate I (21), an assembly plate II (22), an assembly plate III (23) and an assembly plate IV (24), wherein the number of the assembly plate II (22) and the assembly plate IV (24) is two; The two combined plates II (22) are distributed on both sides of the combined plate I (21) and are located at the same level as the combined plate I (21); The two combined plates IV (24) are distributed on the combined plate III (23) and are located at the same level as the combined plate III (23); The cushion plate of the wheelchair body (1) is respectively mounted on the top of the combination plate I (21), the two combination plates II (22), the combination plate III (23) and the two combination plates IV (24), and each module connection is fixedly connected with a nylon belt (3); A transmission gear disc (212) is axially connected at the center of the top of the combined plate I (21), and a guide seat (211) symmetrically distributed with respect to the transmission gear disc (212) is fixedly installed on the top of the combined plate I (21); A side of the two combined plates II (22) close to the top of the combined plates I (21) is provided with no less than three bridge blocks I (221) in sequence along the Y-axis direction, and pillow blocks (222) are fixedly installed on the outer walls of the adjacent sides of the two groups of bridge blocks I (221), and guide rails (223) are symmetrically provided on the outer walls of the adjacent sides of the two pillow blocks (222); A partition plate arranged at the inner center of the guide seat (211) divides the inner part into two rectangular through cavities (2111) of equal specifications, and two guide rails (223) located on the same water surface as one of the guide seats (211) are respectively inserted into the two rectangular through cavities (2111); A guide tooth plate (213) extending to the top of the combined plate I (21) is respectively installed on one side of the two combined plates II (22) close to the top of the combined plate I (21); the two guide tooth plates (213) are respectively fixedly connected to the outer wall of the adjacent side of the two guide seats (211), and both are meshed with the transmission gear disc (212); A bridge seat II (241) is fixedly installed on the top of the inner side of the two combined plates IV (24), a guide block (224) is fixedly installed on the top of the combined plate II (22) on one side adjacent to the combined plate IV (24), and a connecting strip I (242) is provided on the outer wall of one side of the two bridge seats II (241) and extends to the outside of the guide block (224); A reinforcing block (231) is provided on the top of the combined plate III (23), and connecting strips II (216) are fixedly installed on the outer walls on both sides of the reinforcing block (231), and the connecting strips II (216) are slidably connected to the inside of the bridge seat II (241); A bridge seat III (214) is fixedly installed on the top of the combined plate I (21) on one side adjacent to the combined plate III (23); a plurality of connecting shafts (215) distributed in a linear array are fixedly installed on the outer wall of the reinforcing block (231) on one side adjacent to the combined plate I (21); the connecting shafts (215) sequentially penetrate the interior of the bridge seat III (214) and the two guide seats (211); Wherein, one end of the connecting shaft (215) located inside the guide seat (211) is located above the guide rail (223) and does not contact the upper surface of the guide rail (223); The reinforcing block (231) is symmetrically provided with a guide running plate (2310) at the center of the outer wall of one side adjacent to the bridge seat III (214), and one of the guide running plates (2310) is provided with a tooth opening, and one end of the two guide running plates (2310) is slidably connected to the inside of the bridge seat III (214); A base (6) is fixedly mounted at the center of the outer wall of one side of the combined plate I (21) away from the combined plate III (23); The inner shaft of the machine base (6) is connected to a transmission core rod (7) that moves in the axial direction, and the outer wall of the machine base (6) on the side opposite to the combined plate I (21) is provided with an eccentric handle (61) that can be extended and retracted in the axial direction, and the eccentric handle (61) is connected to the transmission core rod (7); The transmission core rod (7) is located at one end of the machine base (6) and is sleeved with a trapezoidal guide block (71). A lead screw (62) and an auxiliary parallel rod (63) symmetrically distributed about the transmission core rod (7) are provided between the inner walls of the machine base (6). A claw member (64) is slidably connected between the lead screw (62) and the auxiliary parallel rod (63). The claw member (64) is threadedly connected to the lead screw (62) and is acted upon by the lead screw (62) so that the claw member (64) pushes the trapezoidal guide block (71) in a horizontal direction to keep synchronous movement. One end of the lead screw (62) penetrates through and extends to the outer side of the machine base (6) and is provided with a knob switch (65). A transmission box (5) is fixedly installed at the center line of the inner top of the combined plate I (21), and transmission gears (52) are provided on the A end and the B end of the transmission sleeve rod (51). The bottom symmetric axis of the transmission box (5) is connected to a transmission shaft (53), and one end of the two transmission shafts (53) located inside the transmission box (5) is provided with a passive gear (54) respectively meshing with the two transmission gears (52). One end of one of the transmission shafts (53) is fixedly installed with a trapezoidal gear (55), and the trapezoidal gear (55) is meshed with the transmission toothed disc (212). One end of the other transmission shaft (53) is fixedly installed with a circular gear (56), and the circular gear (56) is slidably connected to the notches of the two guide running plates (2310) and meshed with one of the guide running plates (2310) with a toothed opening.

2. A multi-parameter adjustable wheelchair body according to claim 1, characterized in that: The second drive and the third drive are composed of a transmission box (5), wherein a transmission sleeve rod (51) and a transmission core rod (7) movably arranged inside the transmission sleeve rod (51) and axially sliding inside the transmission sleeve rod (51); The transmission sleeve rod (51) is composed of an A end and a B end distributed along the same axial direction. When the transmission core rod (7) is locked in the A end, the second drive is activated. When the transmission core rod (7) is locked in the B end, the third drive is operated; When the transmission core rod (7) is locked in the A end and the B end, the second drive and the third drive are operated simultaneously.

3. A multi-parameter adjustable wheelchair body according to claim 2, characterized in that: An inner wall of one of the adjacent ends of the A end and the B end of the transmission sleeve (51) is provided with an inner tooth sleeve (76), and the cross-sections of the racks at both ends of the inner tooth sleeve (76) are circular; The top of the transmission core rod (7) is axially connected with a gear A (72) and a gear B (73) in sequence. The cross-sections of the racks at both ends of the gear A (72) and the gear B (73) are circular. A ratchet (74) is arranged in the grooves at the bottom ends of the gear A (72) and the gear B (73). A ratchet ring (75) is fixedly sleeved on the outer wall of the top end of the transmission core rod (7). The ratchet ring (75) is located on the outer side of the ratchet (74) and cooperates with the ratchet (74). When the gear A (72) is located inside the A end, the A end is kept rotating synchronously; When the gear B (73) is located inside the B end, the B end is kept rotating synchronously; When the gear A (72) and the gear B (73) are located in the A end and the B end at the same time, the transmission sleeve (51) rotates synchronously.

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