Electric wheelchair with adjustable lying posture

Abstract

An electric wheelchair with an adjustable lying posture comprises a frame, the frame comprises a frame front wall plate, a frame rear wall plate, a frame wall plate left supporting connecting beam and a frame wall plate right supporting connecting beam, a first front wheel is arranged on the front side of the left end of the frame front wall plate, a first driving wheel is arranged on the front side of the right end of the frame front wall plate, a second front wheel is arranged on the rear side of the left end of the frame rear wall plate, and a second driving wheel, a seat and a backrest are arranged on the rear side of the right end of the frame rear wall plate; an electric controller, a manual operation controller and a group of batteries; the utility model relates to an electric push mechanism, a rear bracket mechanism and a chair back angle adjusting mechanism, and is characterized in that the electric push mechanism comprises a push cylinder driving motor and an electric push cylinder, and the rear bracket mechanism comprises a pair of connecting shaft hinging arms, a reduction gearbox hinging lug hinging shaft, a hinging arm connecting shaft and a pair of hinging arm connecting shaft roller seats. The electric wheelchair has the advantages that state switching is automatically achieved, the structure is simplified, reliability of connection between the electric thrust mechanism and the rear support mechanism is embodied, action stability is guaranteed, excellent strength and adjustment convenience of the rear support mechanism are embodied, and comfort is guaranteed due to the fact that the lying posture is adjustable.

Description

Technical Field

[0001] The utility model belongs to the technical field of human daily necessities, and particularly relates to an electric wheelchair with adjustable lying posture. Background Technique

[0002] An electric wheelchair, also known as an "electric wheelchair", is a means of transportation for special groups such as the disabled, the elderly and infirm, and those who are ill and undergoing treatment and tending to recover. With China entering the aging era, the total market demand for electric wheelchairs is increasing continuously, and a large amount of technical information related to electric wheelchairs can be found in the publicly available Chinese patent documents. For example, CN2745544Y (multi-functional electric wheelchair), CN201379725Y (obstacle-avoiding electric wheelchair), CN101589979B (a multi-functional electric wheelchair), CN201684098U (electric wheelchair), CN102764185B (electric wheelchair), CN202682214U (electric wheelchair), CN103202748A (anti-tipping electric wheelchair), CN201379725Y (obstacle-avoiding electric wheelchair), CN302198767U (four-wheel electric vehicle), CN204521270U (a folding wheelchair), CN107468438A (folding electric wheelchair), and so on.

[0003] Among the electric wheelchairs not limited to the above examples, the structural design generally focuses on meeting the sitting posture requirements. However, there are relatively few structural designs for electric wheelchairs that combine the sitting and reclining functions. Nevertheless, it can also be slightly found in the publicly available Chinese patent documents. Typically, CN102688124B recommends a "linkage-controlled flat-lying electric wheelchair". The change from the sitting posture to the flat-lying state (flipping the backrest to a height similar to that of the seat) of this patent is reflected by the flat-lying mechanism. Specifically, it is realized by the linear motor of the structural system of the flat-lying mechanism and the lever-type linkage mechanism of the connecting rod of the armrest and the chute mechanisms on the backrest frame and the leg rest (see paragraphs 0032 to 0033 of the description of this patent). More typically, CN113797033B provides "a lying posture adjustable electric wheelchair". The technical effect described in paragraphs 0016 to 0017 of its specification can objectively be reflected in the patent solution. However, according to the structure of this patent and the description in paragraph 0049 of its specification, when lying flat is required, first, the chuck on the reinforcing rod is pressed to separate the reinforcing rod from the front locking rod (which can also be called unlocking), and then the electric push rod drives the support frame, and then the support frame drives the outer frame to rotate upward. During the rotation, the rear end of the outer frame pushes the sliding rod downward, and the sliding rod compresses the spring, thereby realizing lying flat. In the flat-lying state, the floating rear locking rod located (i.e., installed) between the rear bottom surface of the outer frame and the rear bracket is responsible for support adjustment (see paragraph 0043 of the specification).

[0004] The above-mentioned CN113797033B has the following drawbacks: First, when it is necessary to change (or "evolve") the sitting posture to the lying posture, it is first necessary to manually press the chuck on the reinforcing rod to separate the reinforcing rod from the locking rod. Therefore, the operation is relatively troublesome. For a caregiver, the aforementioned operation may be a piece of cake, but for a passenger restricted by both subjective and objective factors, the difficulty of the aforementioned independent operation is relatively large or even almost impossible to achieve. Second, the process of the entire action chain from the sitting posture to the lying posture is as follows: pressing the chuck on the reinforcing rod to unlock the reinforcing rod from the locking rod, the electric push rod operates, and the electric push rod passes through the rear bracket and makes the backrest frame change to an inclined state for the passenger to lie on through the locking rod. Therefore, the structure is relatively complex and the action transmission links are numerous. In particular, the connection reliability between the electric thrust mechanism (referred to as "electric push rod" in the patent) and the rear bracket, and between the rear bracket and the movable rod (substantially a spring cylinder) is relatively fragile. Therefore, on the one hand, it is difficult to ensure a long service life, and on the other hand, the smoothness of each action will be affected to a certain extent. Third, since the adjustment of the backrest angle requires manually turning the handle on the gas spring (specifically, refer to the description in paragraph 0048 of the specification of this patent), the aforementioned first technical problem also exists. In view of the aforementioned prior art, there is still a need for improvement, and the technical solution to be introduced below is generated under this background. Summary of the Utility Model

[0005] The task of the present utility model is to provide a power wheelchair with adjustable lying posture, which helps to automatically realize the state conversion as long as the passenger operates the controller set on the armrest when the backrest needs to be changed from the sitting posture to the lying posture, is beneficial to reducing the action transmission links during the conversion process between the sitting and lying postures of the backrest to simplify the structure, is beneficial to reflecting the good connection reliability between the electric thrust mechanism and the rear bracket mechanism and ensuring the smoothness of the actions between the two, and is beneficial to reflecting the excellent strength of the rear bracket mechanism and facilitating the adjustment requirement of the required angle of the backrest in the lying posture by the passenger operating the controller on the armrest, thereby reflecting the convenience of adjustment and ensuring the comfort of the lying posture.

[0006] The task of the utility model is accomplished in this way. An electric wheelchair with adjustable lying posture includes a frame, the frame includes a front wall panel, a rear wall panel, a left support connecting beam of the frame wall panel and a right support connecting beam of the frame wall panel, the front and rear wall panels of the frame are arranged face to face with each other, the left support connecting beam of the frame wall panel is fixedly connected between the left ends of the front and rear wall panels of the frame, and the right support connecting beam of the frame wall panel is rotatably arranged between the right ends of the front and rear wall panels of the frame, a first front wheel is arranged on the front side of the left end of the front wall panel of the frame, and a first driving wheel is arranged on the front side of the right end of the front wall panel of the frame, a second front wheel is arranged on the rear side of the left end of the rear wall panel of the frame, and a second driving wheel is arranged on the rear side of the right end of the rear wall panel of the frame, the first and second front wheels correspond to each other front and back, and the first and second driving wheels correspond to each other front and back. The wheels also correspond to each other front and back, a seat and a seat back, the seat is connected to the center position of the upper part of the front and rear wall panels of the frame facing each other, a footrest is connected to the left and right end of the seat for adjustment, a front armrest is hinged between the front side of the right end of the seat and the front side of the seat back, and a rear armrest is hinged between the rear side of the right end of the seat and the rear side of the seat back and at a position corresponding to the front armrest, and the lower part of the seat back is hinged to the right end of the seat; an electrical controller, a manual operation controller and a group of batteries, the electrical controller is arranged between the right ends of the front and rear wall panels of the frame facing each other and is electrically connected to the manual operation controller, and the manual operation controller is arranged on the rear armrest, a group of batteries is arranged below the seat and is electrically connected to the electrical controller, and the first and second drive wheels are electrically connected to the electrical controller;An electric thrust mechanism, a rear support mechanism, and a backrest angle adjustment mechanism. The electric thrust mechanism is disposed between the left support connecting cross beam of the vehicle frame wall panel and the rear support mechanism. The rear support mechanism is connected between the right support connecting cross beam of the vehicle frame wall panel and the right end of the seat. The backrest angle adjustment mechanism is disposed on the backrest. It is characterized in that the electric thrust mechanism includes a push cylinder drive motor and an electric push cylinder. The push cylinder drive motor is in transmission connection with the push cylinder drive motor reduction box and is electrically connected to the electric controller. The push cylinder drive motor reduction box, together with the push cylinder drive motor, is hinged to the rear support mechanism through the reduction box hinge ear. The electric push cylinder is in transmission cooperation with the push cylinder drive motor reduction box, and the electric push cylinder push rod of the electric push cylinder is hinged to the middle of the left support connecting cross beam of the vehicle frame wall panel. The rear support mechanism includes a pair of connecting shaft hinge arms, a reduction box hinge ear hinge shaft, a hinge arm connecting shaft, and a pair of hinge arm connecting shaft roller seats. The pair of connecting shaft hinge arms are arranged corresponding to each other front and back, and the middle right side of the pair of connecting shaft hinge arms is fixed to the middle of the length direction of the right support connecting cross beam of the vehicle frame wall panel. The reduction box hinge ear hinge shaft is fixed between the lower ends of the pair of connecting shaft hinge arms. The reduction box hinge ear is hinged to the middle of the length direction of the reduction box hinge ear hinge shaft. The pair of hinge arm connecting shaft roller seats are fixed to the right end of the seat. On the pair of hinge arm connecting shaft roller seats and at corresponding positions, hinge arm connecting shaft roller left and right rolling grooves are respectively provided. Both ends of the hinge arm connecting shaft protrude out of the hinge arm connecting shaft roller seats and are connected to the upper ends of the pair of connecting shaft hinge arms. And at the positions of the hinge arm connecting shaft corresponding to the hinge arm connecting shaft roller left and right rolling grooves of the pair of hinge arm connecting shaft roller seats, a hinge arm connecting shaft roller is respectively provided. The hinge arm connecting shaft roller and the hinge arm connecting shaft roller left and right rolling grooves form a rolling pair. The backrest angle adjustment mechanism includes a backrest angle adjustment push cylinder working motor and a backrest angle adjustment push cylinder. The backrest angle adjustment push cylinder working motor is in transmission connection with the backrest angle adjustment push cylinder working motor reduction box and is also electrically connected to the electric controller. The backrest angle adjustment push cylinder working motor reduction box, together with the backrest angle adjustment push cylinder working motor, is hinged to the lower part of the backrest through the backrest angle adjustment push cylinder working motor reduction box hinge seat. The backrest angle adjustment push cylinder is in transmission cooperation with the backrest angle adjustment push cylinder working motor reduction box, and the backrest angle adjustment push cylinder column of the backrest angle adjustment push cylinder is hinged to the upper end of the backrest.;

[0007] In a specific embodiment of the present utility model, the seat includes a seat frame. The seat frame includes a left cross beam of the seat frame, a right cross beam of the seat frame, a front beam of the seat frame, and a rear beam of the seat frame. The front and rear beams of the seat frame correspond to each other in the front and rear directions in the length direction. The left cross beam of the seat frame is fixed between the opposite sides of the left ends of the front and rear beams of the seat frame. The right cross beam of the seat frame is fixed between the opposite sides of the right ends of the front and rear beams of the seat frame. Among them, the cross-sectional shape of the front beam of the seat frame is rectangular and forms a front beam cavity. The cross-sectional shape of the rear beam of the seat frame is rectangular and forms a rear beam cavity. The lower part of the backrest is hinged to the front beam of the seat frame and the opposite side of the right end of the rear beam of the seat frame. The footrest mechanism is connected to the front beam of the seat frame and the rear beam of the seat frame in a left-right adjustable manner at positions corresponding to the front beam cavity and the rear beam cavity. A seat cushion is fixedly laid on the upward side of the seat frame. Between the opposite sides above the middle in the length direction of the front wall plate of the vehicle frame and the rear wall plate of the vehicle frame, a bearing seat support shaft is fixed through a bearing seat support shaft fixing plate respectively. On the downward side of the middle in the length direction of the front beam of the seat frame, a front pivot bearing seat of the seat frame is fixed. The front pivot bearing seat of the seat frame corresponds to the front end of the bearing seat support shaft and is rotationally matched with the front end of the bearing seat support shaft. On the downward side of the middle in the length direction of the rear beam of the seat frame and at a position corresponding to the front pivot bearing seat of the seat frame, a rear pivot bearing seat of the seat frame is fixed. The rear pivot bearing seat of the seat frame corresponds to the rear end of the bearing seat support shaft and is rotationally matched with the rear end of the bearing seat support shaft. In the middle on the right side of the right cross beam of the seat frame, an arched tube is fixed. The pair of articulated arm connecting shaft roller seats are fixed to the right cross beam of the seat frame and the middle of the arched tube.

[0008] In another specific embodiment of the present utility model, a battery left end support fixing frame is fixed between the opposite sides of the left end of the front beam of the seat frame and the left end of the rear beam of the seat frame, and a battery right end support fixing frame is fixed between the opposite sides of the right end of the front beam of the seat frame and the right end of the rear beam of the seat frame. The battery left end support fixing frame and the battery right end support fixing frame extend downward towards the seat frame. The left end of a group of batteries is fixed to the battery left end support fixing frame, and the right end of a group of batteries is fixed to the battery right end support fixing frame.

[0009] In yet another specific embodiment of the present utility model, a front longitudinal arm hinge plate of the backrest frame is fixed on the rear side surface of the right end of the front side beam of the seat frame, and a rear longitudinal arm hinge plate of the backrest frame is fixed on the front side surface of the right end of the rear side beam of the seat frame and at a position corresponding to the front longitudinal arm hinge plate of the backrest frame; the backrest includes a backrest frame and a backrest cushion. The backrest frame includes a front longitudinal arm of the backrest frame, a rear longitudinal arm of the backrest frame, and an upper connecting arm of the longitudinal arm. The lower part of the front longitudinal arm of the backrest frame is hinged on the front longitudinal arm hinge seat of the backrest frame through the front longitudinal arm hinge shaft of the backrest frame, and the front longitudinal arm hinge seat of the backrest frame is fixed to the front side of the upper end of the front longitudinal arm hinge plate of the backrest frame. The lower part of the rear longitudinal arm of the backrest frame is hinged on the rear longitudinal arm hinge seat of the backrest frame through the rear longitudinal arm hinge shaft of the backrest frame, and the rear longitudinal arm hinge seat of the backrest frame is fixed to the rear side of the upper end of the rear longitudinal arm hinge plate of the backrest frame. The shape of the upper connecting arm of the longitudinal arm is in the shape of

[0010] and the lower part of the front end of the upper connecting arm of the longitudinal arm is fixed to the upper part of the front longitudinal arm of the backrest frame through the front transition connecting seat of the upper connecting arm of the longitudinal arm, and the lower part of the rear end of the upper connecting arm of the longitudinal arm is fixed to the upper part of the rear longitudinal arm of the backrest frame through the rear transition connecting seat of the upper connecting arm of the longitudinal arm. The backrest cushion is laid and fixed on the right side of the backrest frame and is fixed to the left side surfaces of the front and rear longitudinal arms and the upper connecting arm of the longitudinal arm of the backrest frame; a headrest hinge seat is fixed in the middle of the length direction of the upper connecting arm of the longitudinal arm. The upper end of the backrest angle adjustment push cylinder column is hinged to the headrest hinge seat through the push cylinder column hinge pin shaft, and a headrest is connected to the headrest hinge seat.

[0011] In still another specific embodiment of the present utility model, a hinge seat connecting pipe is connected between the right side surfaces of the front longitudinal arm hinge seat and the rear longitudinal arm hinge seat of the backrest frame. A backrest folding locking and unlocking mechanism is provided between the front side beam of the seat frame and the opposite side of the right end of the rear side beam of the seat frame for folding the backrest to the seat or unfolding the backrest relative to the seat to release the folding; a pair of hinge seat hinge ears are fixed in the middle of the length direction of the hinge seat connecting pipe. The backrest angle adjustment push cylinder working motor reduction box hinge seat is hinged to the pair of hinge seat hinge ears at a position corresponding to between the pair of hinge seat hinge ears through the backrest angle adjustment push cylinder working motor reduction box hinge seat pin shaft.

[0011] In still another specific embodiment of the present utility model, the backrest folding locking and unlocking mechanism includes a locking hook operating lever, a first locking hook, a second locking hook, a first locking hook shaft, a second locking hook shaft, a first locking hook pivot support shaft, and a second locking hook pivot support shaft. The front end of the locking hook operating lever is fixed to the right end of the first locking hook through a front screw of the locking hook operating lever and abuts against the lower right side surface of the front longitudinal arm hinge plate of the backrest frame. The rear end of the locking hook operating lever is fixed to the right end of the second locking hook through a rear screw of the locking hook operating lever and abuts against the lower right side surface of the rear longitudinal arm hinge plate of the backrest frame. The left end of the first locking hook forms a first locking hook head, and the first locking hook head cavity of the first locking hook head is hooked or unhooked with the first locking hook shaft, and the first locking hook shaft is fixed to the middle part of the rear side of the front longitudinal arm hinge plate of the backrest frame. At the right end of the first locking hook and at a position corresponding to the right side of the front end of the locking hook operating lever, a front position adjustment selection hole for the front end of the locking hook operating lever is provided. The left end of the second locking hook forms a second locking hook head, and the second locking hook head cavity of the second locking hook head is hooked or unhooked with the second locking hook shaft, and the second locking hook shaft is fixed to the middle part of the front side of the rear longitudinal arm hinge plate of the backrest frame. At the right end of the second locking hook and at a position corresponding to the right side of the rear end of the locking hook operating lever, a rear position adjustment selection hole for the rear end of the locking hook operating lever is provided. The first locking hook pivot support shaft is fixed to the rear side of the front longitudinal arm hinge plate of the backrest frame at a position to the right of the first locking hook shaft. The second locking hook pivot support shaft is fixed to the front side of the rear longitudinal arm hinge plate of the backrest frame at a position to the right of the second locking hook shaft. The middle part of the first locking hook is pivotally engaged with the first locking hook pivot support shaft. The middle part of the second locking hook is pivotally engaged with the second locking hook pivot support shaft; wherein, the first and second locking hooks correspond to each other front and rear; the first and second locking hook shafts correspond to each other; the first and second locking hook pivot support shafts correspond to each other front and rear.

[0012] In a further specific embodiment of the present utility model, the footrest mechanism includes a front footrest, a front footrest hinge arm, a front footrest hinge arm fixing bracket, a locking screw knob for the telescopic adjustment rod of the front footrest hinge arm, a rear footrest, a rear footrest hinge arm, a rear footrest hinge arm fixing bracket, and a locking screw knob for the telescopic adjustment rod of the rear footrest hinge arm. The front footrest is hinged to the lower end of the front footrest hinge arm, and the front footrest hinge arm fixing bracket is fixed to the upper end of the front footrest hinge arm. A front footrest hinge arm fixing bracket adjustment rod is horizontally fixed on the right side of the front footrest hinge arm fixing bracket. The front footrest hinge arm fixing bracket adjustment rod is inserted and adjusted left and right with the front beam cavity of the front beam of the seat frame. The locking screw knob for the telescopic adjustment rod of the front footrest hinge arm is screwed on the front side of the left end of the front beam of the seat frame and extends into the front beam cavity to lock the front footrest hinge arm fixing bracket adjustment rod in the adjusted position. The rear footrest is hinged to the lower end of the rear footrest hinge arm, and the rear footrest hinge arm fixing bracket is fixed to the upper end of the rear footrest hinge arm. A rear footrest hinge arm fixing bracket adjustment rod is horizontally fixed on the right side of the rear footrest hinge arm fixing bracket. The rear footrest hinge arm fixing bracket adjustment rod is inserted and adjusted left and right with the rear beam cavity of the rear beam of the seat frame. The locking screw knob for the telescopic adjustment rod of the rear footrest hinge arm is screwed on the rear side of the left end of the rear beam of the seat frame and extends into the rear beam cavity to lock the rear footrest hinge arm fixing bracket adjustment rod in the adjusted position.

[0013] In a further specific embodiment of the present invention, a front armrest body articulated seat articulation joint is fixed to the middle front side of the height direction of the front longitudinal arm of the seat back frame, and a rear armrest body articulated seat articulation joint is fixed to the middle rear side of the height direction of the rear longitudinal arm of the seat back frame; the front armrest includes a front armrest body bracket articulation rod, a front armrest body bracket and a front armrest body, and a front armrest body bracket articulation rod articulation seat is formed at one end of the front armrest body bracket articulation rod toward the front side beam of the seat frame, A front side beam hinge seat is fixed to the front right end of the front side beam of the seat frame, the front armrest body bracket hinge rod hinge seat is hinged to the front side beam hinge seat through the front armrest body bracket hinge rod hinge seat pin screw, the front armrest body bracket hinge rod one end of the front armrest body bracket is hinged to the left end of the front armrest body bracket through the front armrest body bracket hinge rod hinge screw shaft, the middle part of the side facing downward of the front armrest body is hinged to the right end of the front armrest body bracket through the front armrest body hinge ear, and the right end of the front armrest body The front armrest body articulation seat is hinged to the front armrest body articulation seat articulation joint by means of an articulation screw; the rear armrest includes a rear armrest body bracket articulation rod, a rear armrest body bracket and a rear armrest body, and the rear armrest body bracket articulation rod is formed with a rear armrest body bracket articulation rod articulation seat at one end facing the rear side beam of the seat frame, and a rear side beam articulation seat is fixed to the rear side of the right end of the rear side beam of the seat frame, and the rear armrest body bracket articulation rod articulation seat is connected to the rear armrest body bracket articulation rod articulation seat by a pin screw of the rear armrest body bracket articulation rod articulation seat. The rear side beam is hinged at the hinge seat, and one end of the rear armrest body bracket hinge rod facing the rear armrest body bracket is hinged to the left end of the rear armrest body bracket through the hinge screw shaft of the rear armrest body bracket hinge rod, and the middle part of the downward side of the rear armrest body is hinged to the right end of the rear armrest body bracket through the rear armrest body hinge ear, and the right end of the rear armrest body is hinged to the rear armrest body hinge seat hinge joint through the rear armrest body hinge seat with the aid of a hinge screw, and the manual operation controller is fixed to the left end of the front armrest body.

[0014] In yet another specific embodiment of the present invention, the left end support and fixing frame of the battery is composed of a pair of longitudinal arms of the left end fixed beam of the battery and a transverse arm of the left end fixed beam of the battery, the upper ends of the pair of longitudinal arms of the left end fixed beam of the battery are respectively fixed to the left end of the front beam of the seat frame and the left end of the rear beam of the seat frame facing one side, and the transverse arm of the left end fixed beam of the battery is fixed between the lower ends of the pair of longitudinal arms of the left end fixed beam of the battery; the left side of the group of batteries is fixed to the transverse arm of the left end fixed beam of the battery; the right end support and fixing frame of the battery is composed of a pair of longitudinal arms of the right end fixed beam of the battery and a transverse arm of the right end fixed beam of the battery, the upper ends of the pair of longitudinal arms of the right end fixed beam of the battery are respectively fixed to the right end of the front beam of the seat frame and the right end of the rear beam of the seat frame facing one side, and the transverse arm of the right end fixed beam of the battery is fixed between the lower ends of the pair of longitudinal arms of the right end fixed beam of the battery; the right end of the group of batteries is fixed to the transverse arm of the right end fixed beam of the battery.

[0015] The technical effect of the technical solution provided by the utility model is that: when the seat back needs to be converted between the sitting position and the lying position as needed, the passenger only needs to operate the manual operation controller arranged on the rear armrest, and the electric thrust mechanism changes the angle of the seat back through the rear support mechanism to meet the conversion requirements between the sitting position and the lying position; since the connection relationship between the electric thrust mechanism, the rear support mechanism, the seat and the seat back is reasonable, it is beneficial to reduce the motion transmission links in the process of converting between the sitting position and the lying position and simplify the structure; the connection between the electric thrust mechanism and the rear support mechanism is reliable and can ensure the smoothness of the movement between the two and reflect the excellent strength of the rear support mechanism; because the seat back angle adjustment mechanism can be activated by operating the manual operation controller, the seat back angle can be adjusted as needed, thereby ensuring comfort in the lying position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of an embodiment of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram for left-side observation;

[0018] Figure 3 for Figure 1 Schematic diagram for right-side observation;

[0019] Figure 4 for Figure 1 A magnified view of part A;

[0020] Figure 5 for Figure 3 A magnified view of part B;

[0021] Figure 6 for Figures 1 to 3 The detailed structural diagram of the headrest and the headrest hinge seat shown;

[0022] Figure 7 for Figure 6 Detailed structural diagram of the articulated arm connection mechanism shown. DETAILED DESCRIPTION

[0023] In order to more clearly understand the technical essence and beneficial effects of the present invention, a detailed description will be given below in the form of embodiments. However, the description of the embodiments is not a limitation on the scheme of the present invention. Any equivalent changes made based on the concept of the present invention that are merely formal and not substantial should be regarded as within the scope of the technical scheme of the present invention.

[0024] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on Figure 1The position state is taken as a reference, and therefore it cannot be understood as a special limitation on the technical solution provided by the utility model.

[0025] See also Figures 1 to 3 , shows a vehicle frame 1, which includes a front wall panel 11, a rear wall panel 12, a left support connecting beam 13 and a right support connecting beam 14. The front and rear wall panels 11 and 12 are arranged face to face with each other, the left support connecting beam 13 is fixedly connected between the left ends of the front and rear wall panels 11 and 12, and the right support connecting beam 14 is rotatably arranged between the right ends of the front and rear wall panels 11 and 12. A first front wheel 111 is arranged on the front side of the left end of the front wall panel 11 through a first front wheel seat 1111, and a first driving wheel 112 is arranged on the front side of the right end of the front wall panel 11, and a second front wheel seat 1211 is arranged on the rear side of the left end of the rear wall panel 12 ( Figure 2) is provided with a second front wheel 121, and a second driving wheel 122 is provided at the rear side of the right end of the frame rear wall plate 12, the first and second front wheels 111, 121 correspond to each other front and back, the first and second driving wheels 112, 122 also correspond to each other front and back, and the first driving wheel 112 is driven by a first driving wheel motor 1121, and the second driving wheel 122 is driven by a second driving wheel motor 1221, and the first and second driving wheel motors 1121, 1221 are respectively fixed to the right ends of the front and rear wall plates 11, 12 of the frame A seat 2 and a seat back 3 are shown, which are electrically connected to the electric controller 10 to be mentioned below and are between the side facing each other. The seat 2 is connected to the center position of the upper part of the front and rear wall panels 11 and 12 of the aforementioned frame. A footrest mechanism 21 is connected to the left and right sides of the seat 2 for adjustment. A front armrest 22 is hinged between the front side of the right end of the seat 2 and the front side of the seat back 3, and a rear armrest 23 is hinged between the rear side of the right end of the seat 2 and the rear side of the seat back 3 and at a position corresponding to the front armrest 22. The lower part of the seat back 3 is connected to the front and rear sides of the seat 2. The right end of the seat 2 is hinged; an electrical controller 10 (mentioned above), a manual operation controller 20 and a group of batteries 30 are shown. The electrical controller 10 is arranged between the right ends of the front and rear wall panels 11 and 12 of the aforementioned frame and is electrically connected to the manual operation controller 20, and the manual operation controller 20 is arranged on the aforementioned rear armrest 23. A group of batteries 30 is arranged below the seat 2 and is electrically connected to the aforementioned electrical controller 10. As can be seen from the above, the aforementioned first and second driving wheels 112, 1 22 is electrically connected to the electrical controller 10 through the first and second drive wheel motors 1121 and 1221 respectively; it shows an electric thrust mechanism 4 (also called "electric push cylinder mechanism"), a rear support mechanism 5 and a seat back angle adjustment mechanism 6, the electric thrust mechanism 4 is arranged between the left support connecting beam 13 of the aforementioned frame wall panel and the rear support mechanism 5, the rear support mechanism 5 is connected between the right support connecting beam 14 of the aforementioned frame wall panel and the right end of the aforementioned seat 2, and the seat back angle adjustment mechanism 6 is arranged on the aforementioned seat back 3.

[0026] Depend on Figure 2 As shown, at both ends (front end and rear end) of the frame wall panel left support connecting beam 13, a frame wall panel left support connecting beam fixing flange 131 is formed. The frame wall panel left support connecting beam fixing flange 131 is fixed to the opposite sides of the front and rear wall panels 11 and 12 of the frame through frame wall panel left support connecting beam fixing flange screws 1311. The frame wall panel right support connecting beam 14 is not fixed. Specifically, the frame wall panel right support connecting beam 14 can be rotated under the action of the rear support mechanism 5. Figure 1As shown, both ends of the frame wall panel right support connecting beam 14, i.e., the front end and the rear end, are each provided with a frame wall panel right support connecting beam pivot support seat 141, and the pair of frame wall panel right support connecting beam pivot support seats 141 are respectively fixed to the right ends of the front and rear wall panels 11 and 12 of the frame toward one side by screws.

[0027] As the technical key points of the technical solution provided by the utility model: the aforementioned electric thrust mechanism 4 includes a push cylinder drive motor 41 and an electric push cylinder 42, the push cylinder drive motor 41 is transmission-connected to the push cylinder drive motor reduction box 411 and is electrically connected to the aforementioned electrical controller 10, and the push cylinder drive motor reduction box 411 together with the push cylinder drive motor 41 is connected to the push cylinder drive motor 41 through the reduction box hinge ear 4111 ( Figure 1 The electric push cylinder 42 is articulated with the aforementioned rear support mechanism 5, the electric push cylinder 42 is in transmission cooperation with the push cylinder drive motor reduction box 411, and the electric push cylinder push rod 421 of the electric push cylinder 42 is articulated with the middle part of the aforementioned frame wall panel left support connecting cross beam 13, specifically: a pair of push rod articulated ears 132 ( Figure 2 ), the electric push cylinder push rod 421 is hinged to the push rod articulation ear 132, the aforementioned rear support mechanism 5 includes a pair of connecting shaft articulation arms 51, a reduction box articulation ear articulation shaft 52, an articulation arm connecting shaft 53 and a pair of articulation arm connecting shaft roller seats 54, the pair of connecting shaft articulation arms 51 correspond to each other front and back and the middle right side of the pair of connecting shaft articulation arms 51 is welded and fixed to the middle part of the length direction of the aforementioned frame wall panel right support connecting cross beam 14, the reduction box articulation ear articulation shaft 52 is fixed between the lower ends of the pair of connecting shaft articulation arms 51, and the aforementioned reduction box articulation ear 4111 is articulated to the middle part of the length direction of the articulation shaft 52 of the reduction box articulation ear ( Figure 1As shown in the figure, a pair of articulated arm connecting shaft roller seats 54 are fixed to the right end of the aforementioned seat 2, and left and right rolling grooves 541 for the rollers of the articulated arm connecting shafts are respectively provided on the pair of articulated arm connecting shaft roller seats 54 and at corresponding positions thereof, and both ends of the articulated arm connecting shaft 53 respectively protrude from the articulated arm connecting shaft roller seats 54 and are connected to the upper ends of a pair of connecting shaft articulated arms 51, and are limited by limiting nuts 532 screwed on the two ends of the articulated arm connecting shaft 53, and at the positions of the articulated arm connecting shaft 53 corresponding to the aforementioned articulated arm connecting shaft roller left and right rolling grooves 541 of the pair of articulated arm connecting shaft roller seats 54, an articulated arm connecting shaft roller 531 is respectively provided, and the articulated arm connecting shaft roller 531 is connected to the left and right rolling grooves 541 of the articulated arm connecting shaft roller The chair back angle adjustment mechanism 6 constitutes a rolling pair, and includes a chair back angle adjustment push cylinder working motor 61 and a chair back angle adjustment push cylinder 62. The chair back angle adjustment push cylinder working motor 61 is transmission-connected to the chair back angle adjustment push cylinder working motor reducer 611 and is also electrically connected to the electrical controller 10. The chair back angle adjustment push cylinder working motor reducer 611 together with the chair back angle adjustment push cylinder working motor 61 is hinged to the lower part of the aforementioned chair back 3 through the chair back angle adjustment push cylinder working motor reducer hinge seat 6111. The chair back angle adjustment push cylinder 62 is transmission-matched to the chair back angle adjustment push cylinder working motor reducer 611 and the chair back angle adjustment push cylinder column 621 of the chair back angle adjustment push cylinder 62 is hinged to the upper end of the chair back 3.

[0028] When the passenger operates the manual operation controller 20, the electric controller 10 gives a working instruction to the push cylinder drive motor 41, and the push cylinder drive motor 41 drives the push cylinder drive motor reduction box 411, and the push cylinder drive motor reduction box 411 reduces speed and drives the electric push cylinder 42, and the left end of the electric push cylinder push rod 421 of the electric push cylinder 42 pushes the left support connecting beam 13 of the frame wall panel through the aforementioned push rod hinge ear 132. Since the position of the left support connecting beam 13 of the frame wall panel is unchanged, that is, it is always in a static state, the aforementioned reduction box is used under the reaction force or the reaction force. The articulated ear 4111 pushes the aforementioned reduction gearbox articulated ear articulated shaft 52, and the reduction gearbox articulated ear articulated shaft 52 drives a pair of connecting shaft articulated arms 51. Since the right side of the middle part of the pair of connecting shaft articulated arms 51 is fixed to the aforementioned rotatable frame wall panel right supporting connecting cross beam 14, under the pushing action of the reduction gearbox articulated ear 4111 on the reduction gearbox articulated ear articulated shaft 52, the upper ends of a pair of connecting shaft articulated arms 51 rotate counterclockwise by a certain angle, and the articulated arm connecting shaft roller 531 is driven by the articulated arm connecting shaft 53 to roll to the left along the aforementioned articulated arm connecting shaft roller left and right rolling grooves 541. In the aforementioned process, as mentioned above, since a pair of articulated arm connecting shaft roller seats 54 are fixed to the right end of the aforementioned seat 2, the pair of articulated arm connecting shaft roller seats 54 drive the seat frame right cross beam 24b and the arched tube 24m of the seat frame structural system of the seat 2 fixed thereto and described below under the force state, so that the right end of the seat 2 rotates clockwise by an angle, and the left end of the seat 2 is correspondingly tilted up by an angle, so that the seat 2 can be relative to the seat back 3. Figure 3 The lying position shown in the figure. Vice versa (the push cylinder drive motor 41 works in the reverse direction), which will not be described in detail. Figure 3 In the lying position shown, the upward or downward tilt angle of the seat back 3 can be changed by adjusting the seat back angle adjustment mechanism 6 .

[0029] See you next time Figures 1 to 3 The seat 2 includes a seat frame, which includes a left cross beam 24a, a right cross beam 24b, a front side beam 24c and a rear side beam 24d. The front and rear side beams 24c and 24d of the seat frame correspond to each other in the longitudinal direction. The left cross beam 24a of the seat frame is fixed between the left ends of the front and rear side beams 24c and 24d of the seat frame, and the right cross beam 24b of the seat frame is fixed between the right ends of the front and rear side beams 24c and 24d of the seat frame. The cross-sectional shape of the front side beam 24c of the seat frame is rectangular and forms a front side beam cavity 24e. The cross-sectional shape of the rear side beam 24d of the seat frame is rectangular and forms a rear side beam cavity 24f ( Figure 2The lower part of the aforementioned seat back 3 is hinged to the right end of the front side beam 24c of the aforementioned seat frame and the rear side beam 24d of the seat frame facing one side; the aforementioned footrest mechanism 21 is connected to the front side beam 24c of the seat frame and the rear side beam 24d of the seat frame in a manner that can be adjusted left and right at the position corresponding to the aforementioned front side beam cavity 24e and the rear side beam cavity 24f; a seat cushion 24g is laid on the side of the seat frame facing upward, and the seat cushion 24g is composed of a seat cushion bottom plate and a soft cushion combined with the seat cushion bottom plate, and the seat cushion bottom plate is preferably bonded to the seat frame by an adhesive; a bearing seat support shaft 15 ( Figure 2 A front pivot bearing seat 24h (shown) of the seat frame is fixed to the middle part of the front side beam 24c in the longitudinal direction of the seat frame and faces downward. Figure 2 The front pivot bearing seat 24h of the seat frame corresponds to the front end of the bearing seat support shaft 15 and is rotatably matched with the front end of the bearing seat support shaft 15. A rear pivot bearing seat 24i of the seat frame is fixed to the middle of the length direction of the rear side beam 24d of the seat frame and faces downward and at a position corresponding to the front pivot bearing seat 24h of the seat frame. Figure 2 Marked), the rear pivot bearing seat 24i of the seat frame corresponds to the rear end of the bearing seat support shaft 15 and rotates with the rear end of the bearing seat support shaft 15; an arched tube 24m in the shape of a bow is fixed to the middle part of the right side of the right cross beam 24b of the seat frame, and the aforementioned pair of articulated arm connecting shaft roller seats 54 are fixed to the right cross beam 24b of the seat frame and the middle part of the arched tube 24m.

[0030] A battery left end support bracket 24j is fixed between the left end of the front side beam 24c of the seat frame and the left end of the rear side beam 24d of the seat frame, and a battery right end support bracket 24k is fixed between the right end of the front side beam 24c of the seat frame and the right end of the rear side beam 24d of the seat frame. Figure 2 Marked), the battery left end support bracket 24j and the battery right end support bracket 24k extend toward the bottom of the seat frame, the left end of the aforementioned group of batteries 30 is fixed to the battery left end support bracket 24j, and the right end of the group of batteries 30 is fixed to the battery right end support bracket 24k.

[0031] See you next time Figures 1 to 3 A back frame front longitudinal arm hinge plate 24n is fixed on the right end rear side surface of the aforementioned seat frame front side beam 24c, and a back frame rear longitudinal arm hinge plate 24p is fixed on the right end front side surface of the aforementioned seat frame rear side beam 24d and at a position corresponding to the back frame front longitudinal arm hinge plate 24n.

[0032] The aforementioned chair back 3 includes a chair back frame 31 and a chair back cushion 32. The chair back frame 31 includes a chair back frame front longitudinal arm 311, a chair back frame rear longitudinal arm 312 and a longitudinal arm upper connecting arm 313. The lower part of the chair back frame front longitudinal arm 311 is hinged to the chair back frame front longitudinal arm hinge seat 31111 through the chair back frame front longitudinal arm hinge shaft 3111, and the chair back frame front longitudinal arm hinge seat 31111 is fixed to the upper front side of the aforementioned chair back frame front longitudinal arm hinge plate 24n. The lower part of the chair back frame rear longitudinal arm 312 is hinged to the chair back frame rear longitudinal arm hinge seat 31211 through the chair back frame rear longitudinal arm hinge shaft 3121, and the chair back frame rear longitudinal arm hinge seat 31211 is fixed to the upper rear side of the aforementioned chair back frame rear longitudinal arm hinge plate 24p. The shape of the longitudinal arm upper connecting arm 313 is The shape of a Chinese character, and the front lower part of the longitudinal arm upper connecting arm 313 is fixed to the upper part of the front longitudinal arm 311 of the aforementioned seat back frame through the front transition connecting seat 3131 of the longitudinal arm upper connecting arm, and the rear lower part of the longitudinal arm upper connecting arm 313 is fixed to the upper part of the rear longitudinal arm 312 of the aforementioned seat back frame through the rear transition connecting seat 3132 of the longitudinal arm upper connecting arm. The seat back cushion 32 is laid on the right side of the seat back frame 31 and is fixed to the front and rear longitudinal arms 311, 312 of the aforementioned seat back frame and the left side of the longitudinal arm upper connecting arm 313; a headrest articulated seat 3133 is preferably fixed by welding in the middle part of the longitudinal arm upper connecting arm 313 in the longitudinal direction, the upper end of the aforementioned seat back angle adjustment push cylinder column 621 is hinged to the headrest articulated seat 3133 through the push cylinder column articulated pin 6211, and a headrest 7 is connected to the headrest articulated seat 3133.

[0033] Depend on Figures 1 to 3 As shown, the aforementioned headrest 7 is connected to the headrest hinge seat 3133 via an articulated arm connection mechanism 9. The seat back cushion 32 mentioned above is the same as the description of the seat cushion 24g, that is, it is composed of a seat back cushion base plate and a cushion combined on the seat back cushion base plate. The seat back cushion base plate is preferably bonded to the front and rear longitudinal arms 311, 312 of the seat back cushion and the left side of the upper connecting arm 313 of the seat back by using adhesive.

[0034] See you next time Figures 1 to 3 An articulated seat connecting tube 314 is connected between the right side surfaces of the front longitudinal arm articulated seat 31111 of the aforementioned chair back frame and the rear longitudinal arm articulated seat 31211 of the chair back frame, and a chair back folding locking and unlocking mechanism 8 is provided between the right ends of the front side beam 24c of the seat frame and the rear side beam 24d of the aforementioned seat frame, for folding the aforementioned chair back 3 to the aforementioned seat 2 or unfolding the chair back 3 relative to the seat 2 and releasing the folding.

[0035] See also Figures 4 to 5 And combined with Figures 1 to 3 A pair of hinged seat hinged ears 3141 (Figure 1 Marked), the aforementioned chair back angle adjustment push cylinder working motor reducer articulated seat 6111 is hinged to a pair of articulated seat articulated ears 3141 at a position corresponding to between a pair of articulated seat articulated ears 3141 through the chair back angle adjustment push cylinder working motor reducer articulated seat pin shaft 61111.

[0036] Depend on Figure 4 and Figure 5 As shown, the aforementioned front longitudinal arm hinge plate 24n of the chair back frame is fixed to the right end of the front side beam 24c of the seat frame by the front longitudinal arm hinge plate fixing screws 24x of the chair back frame, and the aforementioned rear longitudinal arm hinge plate 24p of the chair back frame is fixed to the right end of the rear side beam 24d of the seat frame by the rear longitudinal arm hinge plate fixing screws 24y of the chair back frame.

[0037] The applicant briefly describes the working process of the aforementioned seat back angle adjustment mechanism 6. The passenger operates the manual operation controller 20, so that the seat back angle adjustment push cylinder working motor 61 drives the seat back angle adjustment push cylinder working motor reduction box 611. The seat back angle adjustment push cylinder working motor reduction box 611 reduces speed and drives the seat back angle adjustment push cylinder 62, so that the seat back angle adjustment push cylinder column 621 extends out of the cylinder body until the angle of the headrest 7 meets the degree expected by the passenger (to be mentioned below), and the same applies in reverse.

[0038] Please see the key Figure 4 and Figure 5 And still combined Figures 1 to 3 The aforementioned seat back folding locking and unlocking mechanism 8 includes a locking hook operating rod 81, a first locking hook 82, a second locking hook 83, a first locking hook shaft 84, a second locking hook shaft 85, a first locking hook pivot support shaft 86 and a second locking hook pivot support shaft 87. The front end of the locking hook operating rod 81 is connected by a locking hook operating rod front screw 811 ( Figure 5 The rear end of the locking hook operating rod 81 is fixed to the right end of the first locking hook 82 and abuts against the right side surface of the lower end of the front longitudinal arm hinge plate 24n of the seat back frame. ... Figure 4The first locking hook 82 is fixed to the right end of the second locking hook 83 and abuts against the right side surface of the lower end of the rear longitudinal arm hinge plate 24p of the aforementioned seat back frame. The left end of the first locking hook 82 is formed with a first locking hook head 821, and the first locking hook head cavity 8211 of the first locking hook head 821 is hooked or unhooked with the aforementioned first locking hook shaft 84, and the first locking hook shaft 84 is fixed to the middle part of the rear side of the hinge plate 24n of the front longitudinal arm of the aforementioned seat back frame. A first locking hook operating rod front end position adjustment selection hole 822 is provided at the right end of the first locking hook 82 and at a position corresponding to the right side of the front end of the aforementioned locking hook operating rod 81. The left end of the second locking hook 83 is formed with a second locking hook head 831, and the second locking hook head cavity 8311 of the second locking hook head 831 is hooked or unhooked with the aforementioned second locking hook shaft 85, and the second locking hook shaft 85 is fixed to the middle part of the front side of the hinge plate 24p of the rear longitudinal arm of the aforementioned seat back frame. A second locking hook operating rod rear end position adjustment selection hole 832 is provided at the right end of the second locking hook 83 and at a position corresponding to the right side of the rear end of the aforementioned locking hook operating rod 81. The first locking hook pivot support shaft 86 is fixed to the rear side of the front longitudinal arm hinge plate 24n of the seat back frame at a position located to the right of the first locking hook shaft 84, and the second locking hook pivot support shaft 87 is fixed to the front side of the rear longitudinal arm hinge plate 24p of the seat back frame at a position located to the right of the aforementioned second locking hook shaft 85. The middle part of the aforementioned first locking hook 82 is pivotally matched with the aforementioned first locking hook pivot support shaft 86, and the middle part of the aforementioned second locking hook 83 is pivotally matched with the aforementioned second locking hook pivot support shaft 87; wherein the aforementioned first and second locking hooks 82, 83 correspond to each other front and back; the aforementioned first and second locking hook shafts 84, 85 correspond to each other; the aforementioned first and second locking hook pivot support shafts 86, 87 correspond to each other front and back.

[0039] Since the first locking hook operating rod front end position adjustment selection hole 822 and the second locking hook operating rod rear end position adjustment selection hole 832 are mentioned above, the position of the aforementioned locking hook operating rod 81 can be changed as needed and set between the first locking hook operating rod front end position adjustment selection hole 822 and the second locking hook operating rod rear end position adjustment selection hole 832.

[0040] When the utility model is to be temporarily folded, the passenger, a caregiver or a family member only needs to hold and pull the locking hook operating rod 81 upwards, and the locking hook operating rod 81 will simultaneously move the right ends of the first and second locking hooks 82 and 83 upwards. At the same time, as the first and second locking hooks 82 and 83 rotate counterclockwise around the first and second locking hook pivot support shafts 86 and 87 as the rotation center, the first locking hook head 821 and the second locking hook head 831 are respectively disengaged from the first locking hook shaft 84 and the second locking hook shaft 85 at the same time, so that when a force is slightly applied to the chair back toward the seat 2, the chair back 3 can be placed on the seat 2 in a folded state. The same example is used for the reverse and the description is not repeated.

[0041] See you next time Figures 1 to 3 The aforementioned footrest mechanism 21 includes a front footrest 211, a front footrest articulated arm 212, a front footrest articulated arm fixing frame 213, a front footrest articulated arm telescopic adjustment rod locking screw knob 214, a rear footrest 215, a rear footrest articulated arm 216, a rear footrest articulated arm fixing frame 217 and a rear footrest articulated arm telescopic adjustment rod locking screw knob 218. The front footrest 211 is hinged at the lower end of the front footrest articulated arm 212, and the front footrest articulated arm fixing frame 213 is fixed to the upper end of the front footrest articulated arm 212. A front footrest articulated arm fixing frame adjusting rod 2131 is fixed in a horizontal state on the right side of the front footrest articulated arm fixing frame 213. The front footrest articulated arm fixing frame 213 is fixed to the right side of the front footrest articulated arm fixing frame 213. The arm fixing frame adjustment rod 2131 is matched with the front side beam cavity 24e of the front side beam 24c of the aforementioned seat frame for left and right plug-in adjustment. The front footrest articulated arm telescopic adjustment rod locking screw knob 214 is screwed on the front side of the left end of the front side beam 24c of the aforementioned seat frame and penetrates into the aforementioned front side beam cavity 24e to lock the aforementioned front footrest articulated arm fixing frame adjustment rod 2131 in the adjusted position. The rear footrest 215 is hinged to the lower end of the rear footrest articulated arm 216. The rear footrest articulated arm fixing frame 217 is fixed to the upper end of the rear footrest articulated arm 216. A rear footrest articulated arm fixing frame adjustment rod 2171 is fixed in a horizontal state on the right side of the rear footrest articulated arm fixing frame 217 ( Figure 3 The rear footrest articulated arm fixing frame adjustment rod 2171 is matched with the rear beam cavity 24f of the aforementioned seat frame rear beam 24d for left and right insertion and withdrawal adjustment. The rear footrest articulated arm telescopic adjustment rod locking screw knob 218 is screwed onto the rear side of the left end of the aforementioned seat frame rear beam 24d and extends into the aforementioned rear beam cavity 24f to lock the aforementioned rear footrest articulated arm fixing frame adjustment rod 2171 in the adjusted position.

[0042] The advantage of designing the footrest mechanism 21 as a structural form that can be adjusted for left and right displacement is that it can meet the adjustment requirements of the passengers' body and / or foot length differences. After the front and rear footrest articulated arm fixing frame adjustment rods 2131 and 2171 are adjusted left and right, it is only necessary to tighten the front and rear footrest articulated arm telescopic adjustment rod locking screw knobs 214 and 218 respectively.

[0043] See you next time Figures 1 to 3A front armrest body articulated seat articulation joint 3112 is fixed to the middle front side of the height direction of the front longitudinal arm 311 of the aforementioned chair back frame, and a rear armrest body articulated seat articulation joint 3122 is fixed to the middle rear side of the height direction of the rear longitudinal arm 312 of the aforementioned chair back frame; the aforementioned front armrest 22 includes a front armrest body bracket articulation rod 221, a front armrest body bracket 222 and a front armrest body 223, and the front armrest body bracket articulation rod articulation seat 2211 is formed at one end of the front armrest body bracket articulation rod 221 toward the front side beam 24c of the aforementioned seat frame, and a front side beam articulation seat 2211 is fixed to the front side of the right end of the front side beam 24c of the aforementioned seat frame. 4q, the aforementioned front armrest body bracket hinge rod hinge seat 2211 is hinged to the aforementioned front side beam hinge seat 24q through the front armrest body bracket hinge rod hinge seat pin screw 22111, the front armrest body bracket hinge rod 221 is hinged to the left end of the front armrest body bracket 222 through the front armrest body bracket hinge rod hinge screw shaft 2212, the middle part of the side facing downward of the front armrest body 223 is hinged to the right end of the front armrest body bracket 222 through the front armrest body hinge ear 2231, and the right end of the front armrest body 223 is hinged through (i.e., "by") the front armrest body hinge seat 2232 through (i.e., "by") the front armrest body hinge seat 2232. The aforementioned rear armrest 23 comprises a rear armrest body bracket hinge rod 231, a rear armrest body bracket 232 and a rear armrest body 233. The rear armrest body bracket hinge rod 231 is formed with a rear armrest body bracket hinge rod hinge seat 2311 at one end facing the aforementioned seat frame rear side beam 24d. A rear side beam hinge seat 24r is fixed to the rear side of the right end of the aforementioned seat frame rear side beam 24d. The aforementioned rear armrest body bracket hinge rod hinge seat 2311 is connected to the aforementioned rear side beam hinge seat 24r through the rear armrest body bracket hinge rod hinge seat pin screw 23111. Hinge, one end of the rear armrest body bracket hinge rod 231 facing the rear armrest body bracket 232 is hinged to the left end of the rear armrest body bracket 232 through the rear armrest body bracket hinge rod hinge screw shaft 2312, the middle part of the downward side of the rear armrest body 233 is hinged to the right end of the rear armrest body bracket 232 through the rear armrest body hinge ear 2331, and the right end of the rear armrest body 233 is hinged to the aforementioned rear armrest body hinge seat hinge joint 3122 through (i.e. "by") the rear armrest body hinge seat 2332 through (i.e. "with the help of") the hinge screw, and the aforementioned manual operation controller 20 is fixed to the left end of the aforementioned front armrest body 233.

[0044] The aforementioned left end battery support fixing frame 24j is composed of a pair of battery left end fixing beam longitudinal arms 24s and a battery left end fixing beam transverse arm 24t. The upper ends of the pair of battery left end fixing beam longitudinal arms 24s are respectively fixed to the left end of the aforementioned seat frame front side beam 24c and the left end of the seat frame rear side beam 24d facing one side, and the battery left end fixing beam transverse arm 24t is fixed between the lower ends of the pair of battery left end fixing beam longitudinal arms 24s; the left side of the aforementioned group of batteries 30 is fixed to the battery left end fixing beam transverse arm 24t The aforementioned battery right end support fixing frame 24k is composed of a pair of battery right end fixing beam longitudinal arms 24u and a battery right end fixing beam transverse arm 24v. The upper ends of the pair of battery right end fixing beam longitudinal arms 24u are respectively fixed to the right end of the aforementioned seat frame front side beam 24 and the right end of the seat frame rear side beam 24d facing one side, and the battery right end fixing beam transverse arm 24v is fixed between the lower ends of the pair of battery right end fixing beam longitudinal arms 24u. The right end of the aforementioned group of batteries 30 is fixed to the battery right end fixing beam transverse arm 24v.

[0045] A turn signal lamp 24w is arranged on the upper part of the opposite side of the longitudinal arm 24s of the fixed beam at the left end of the aforementioned pair of batteries, and the turn signal lamp 24w is electrically connected to the aforementioned electrical controller 10 by a circuit; a controller protective cover 101 is arranged on the upper part corresponding to the aforementioned electrical controller 10, and the controller protective cover 101 is fixed to the right end of the aforementioned front wall panel 11 and the rear wall panel 12 of the frame facing one side, and a pair of double jump lights 1011 (also called "double flash lights") are arranged on the controller protective cover 101, and the pair of double jump lights 1011 are electrically connected to the electrical controller 10 by a circuit.

[0046] See also Figure 6 and Figure 7 And combined with Figure 1 ,Depend on Figure 6 As shown, a pair of push cylinder column articulation shaft articulation ears 31331 extend from the lower part of the aforementioned headrest articulation seat 3133, and the upper end of the aforementioned seat back angle adjustment push cylinder column 621 is articulated with the pair of push cylinder column articulation shaft articulation ears 31331 through the aforementioned push cylinder column articulation pin 6211 at a position corresponding to between the pair of push cylinder column articulation shaft articulation ears 31331. A joint arm lower connecting plate inserting column hole 31332 is also formed on the right side of the headrest articulation seat 3133, and an inserting column locking screw 31333 is provided at a position corresponding to the joint arm lower connecting plate inserting column hole 31332.

[0047] exist Figure 6The aforementioned articulated arm connection mechanism 9 for connecting the headrest 7 with the headrest connection seat 3133 is shown in the figure, and the articulated arm connection mechanism 9 includes a headrest fixing plate 91, a group of articulated arms 92, an articulated arm locking and releasing device 93, an articulated arm lower transition connection plate 94 and an articulated arm lower connection plate 95. The headrest fixing plate 91 is fixed to the right center position in the length direction of the headrest 7 by a group of headrest fixing plate screws 911. A headrest fixing plate articulated arm hinged fin plate 912 extends on the right side of the headrest fixing plate 91. The headrest fixing plate articulated arm hinged fin plate 912 is composed of a group of headrest fixing plate articulated arm hinged fin plate grooves 9121 separated from each other. A group of spaced articulated arm lower transition connection plate fins 941 are formed on the right side of the articulated arm lower transition connection plate 94, and The articulated arm lower transition connecting plate 94 is fixed to the articulated arm lower connecting plate 95 by a group of articulated arm lower transition connecting plate screws 942, and a articulated arm lower connecting plate plug 951 extends downward from the left side of the articulated arm lower connecting plate 95, and the articulated arm lower connecting plate plug 951 is inserted into the articulated arm lower connecting plate plug hole 31332 and locked by the plug locking screw 31333, a group of articulated arms 92 are connected between the articulated fin plate 912 of the headrest fixing plate articulated arm and the articulated arm lower transition connecting plate fin 941, and the two adjacent articulated arms 92, the articulated arm 92 and the headrest fixing plate articulated fin plate 912, and the articulated arm 92 and the articulated arm lower transition connecting plate fin 941 are each locked or released by the articulated arm locking release device 93.

[0048] Each of the joint arms 92 has a set of joint arm hinged fins 921 at both ends, and the joint arm hinged fins 921 are hingedly connected and locked or released with the headrest fixing plate joint arm hinged fins 912, the joint arm lower transition connecting plate fins 941, and the joint arm hinged fins 921 at the opposite ends of two adjacent joint arms 92 through the joint arm locking and releasing device 93. Figure 6 From the structure shown, it can be seen that the articulation of the articulated wing 921 of the articulated arm and the articulated fin groove 9121 of the headrest fixing plate articulated fin 912 of the headrest fixing plate articulated arm is shown as an interdigitated articulation. Similarly, the articulation of the articulated wing 921 of the articulated arm and the fin 941 of the lower transition connecting plate of the articulated arm is also shown as an interdigitated articulation, and the articulated wing 921 of the adjacent articulated arm 92 at the opposite end is also shown as an interdigitated articulation.

[0049] Depend on Figure 7As shown, the aforementioned articulated arm locking and releasing device 93 includes a locking shaft 931, a locking shaft matching nut sleeve 932, a nut sleeve matching screw sleeve 933, a matching screw sleeve operating handle sleeve 934, a reset spring 935 and a handle locking screw 936. The front end of the locking shaft 931 passes through the articulated arm hinge wing 921 and extends to the front of the articulated arm 92. A locking shaft thread 9311 is formed at the front end of the locking shaft 931, and a flange-shaped rib 9312 with a diameter larger than that of the locking shaft 931 is formed at the rear end of the locking shaft 931. The flange-shaped rib 9312 contacts the rear side of the articulated arm 92. The locking shaft of the nut sleeve 932 is matched with the locking shaft thread 9311 and is formed on the cavity wall of the nut sleeve cavity. The locking shaft and nut sleeve cavity wall thread 9321 is matched with the locking shaft thread 9311 and is spiral. The locking shaft and nut sleeve cavity wall thread 9321 is threadedly matched with the locking shaft thread 9311. The outer wall of the locking shaft and nut sleeve 932 is formed with spaced transverse grooves 9322 parallel to the length direction of the locking shaft and nut sleeve 932. The cavity wall of the nut sleeve and screw sleeve 933 is formed with nut sleeve transverse spaced grooves 9331, and a handle limiting screw connection thread is formed at the front end of the cavity wall of the nut sleeve and screw sleeve 933. 9333, an outer wall transverse pattern 9332 is formed on the front end outer wall of the nut sleeve matching screw sleeve 933, the nut sleeve transverse spacing pattern 9331 cooperates with the spacing transverse pattern 9322, the matching screw sleeve operating handle sleeve 934 is formed with a matching screw sleeve operating handle sleeve cavity 9341, the nut sleeve matching screw sleeve 933 is accommodated in the matching screw sleeve operating handle sleeve cavity 9341, and a spacing transverse matching pattern 9342 is formed on the front end of the matching screw sleeve operating handle sleeve cavity 9341, the spacing transverse matching pattern 9342 cooperates with the outer wall transverse pattern 9332, and the matching screw sleeve operating handle sleeve 934 is formed with the outer wall transverse pattern 9332. A spring supporting cavity 9343 is formed at the center position of the front end face, and a matching screw sleeve operating handle 9344 is extended on the outer wall of the matching screw sleeve operating handle sleeve 934. The reset spring 935 is located in the spring supporting cavity 9343 and is sleeved on the handle locking screw 936. The front end of the reset spring 935 is supported on the handle locking screw 936, and the rear end is supported on the bottom wall of the spring supporting cavity 9343. The handle locking screw 936 penetrates into the matching screw sleeve operating handle sleeve cavity 9341 through the center hole on the bottom wall of the spring supporting cavity 9343 and is threadedly connected to the handle limiting screw connecting thread 9333.

[0050] like Figure 6As shown, after the angle of the joint arm 92 together with the headrest 7 is adjusted, the joint arm locking release device 93 is operated to lock the joint arm hinge wing 921 and the headrest fixing plate joint arm hinge wing 912, lock the joint arm hinge wing 921 at the opposite ends of the two adjacent joint arms 92 with each other, and lock the joint arm hinge wing 921 and the joint arm lower transition connecting plate fin 941. Because during the adjustment process of the joint arm 92 together with the headrest 7, the locking shaft 931 of the structural system of the joint arm locking release device 93 is in an unlocked state, so it needs to be locked after the adjustment is completed. The specific locking operation is: just turn the matching screw sleeve operating handle 9344, which drives the matching screw sleeve operating handle sleeve 934, and drives the nut sleeve matching screw sleeve 933 through the matching of the spaced transverse matching lines 9342 and the outer wall transverse lines 9332, and drives the locking shaft matching nut sleeve 932 through the spaced transverse lines 9322 by the nut sleeve transverse spacing lines 9331 of the nut sleeve matching screw sleeve 933, and drives the locking shaft matching nut sleeve 932 through the locking shaft threads 9321 of the locking shaft matching nut sleeve cavity wall through the locking shaft threads 9311, until a set of joint arms 92 and the headrest 7 are locked at the desired angle adjustment position. The same applies in reverse.

[0051] As mentioned above, the aforementioned joint arm lower connecting plate pin 951 extending from the lower part of the joint arm lower connecting plate 95 is connected to the headrest hinge seat 3133 by being inserted into the joint arm lower connecting plate pin hole 31332 and is locked by the pin locking screw 31333 at the same time. Since the backrest angle adjustment push cylinder column 621 is hinged to a pair of push cylinder column articulation ears 31331 extending below the headrest articulation seat 3133, the backrest angle adjustment push cylinder 62 is driven by the backrest angle adjustment push cylinder column 621 of the backrest angle adjustment push cylinder 62. When the headrest articulation seat 3133 and the backrest 3 are swung to the left or right, the lower connecting plate 95 of the articulated arm is driven by the lower connecting plate plug column 951 of the articulated arm. The lower connecting plate 95 of the articulated arm drives the lower transition connecting plate 94 fixed thereto, so that the position of a group of articulated arms 92 and the headrest 7 are also swung to the left or right accordingly. The aforementioned leftward or rightward swinging action depends on the clockwise or counterclockwise working state (i.e., forward or reverse working state) of the backrest angle adjustment push cylinder working motor 61. And the degree of inclination of the backrest 3 is preferably the most comfortable feeling for the seat occupant.

[0052] Since a group of articulated arms 92 has multiple (three in this embodiment) aforementioned mating screw sleeve operating handles 9344, in order to avoid interference between the mating screw sleeve operating handles 9344 or the mating screw sleeve operating handles 9344 on other components, when interference occurs, just press the aforementioned handle locking screw 936 with the thumb and pull the mating screw sleeve operating handle 9344 outward at the same time, and the reset spring 935 is compressed. At this time, since the spaced transverse mating patterns 9342 are separated (detached) from the outer wall transverse patterns 9332, the mating screw sleeve operating handle 9344 can be idle and rotated to a non-interference position, and then the finger is removed from the handle locking screw 936 and the mating screw sleeve operating handle 9344. Under the action of the restoring force of the reset spring 935, the mating screw sleeve operating handle sleeve 934 is reset. Specifically, the aforementioned spaced transverse mating patterns 9342 and the aforementioned outer wall transverse patterns 9332 are in a state of mutual meshing, that is, the original connection relationship is restored.

[0053] Undoubtedly, the adjustment of the above-mentioned articulated arm connection mechanism 9 can change the angle of a group of articulated arms 92 as required, so that the headrest 7 can meet the comfort level required by the seat occupant.

[0054] Since the movement or not and the adjustment of the walking speed of the reclining-adjustable electric wheelchair of the utility model are achieved by the passenger's operation of the manual operation controller 20, and the first and second turn signals 24w, 1011 during the turning are also achieved by the operation of the manual operation controller 20, and since these aforementioned actions belong to the well-known technology, for example, they can be understood by reading the patent documents mentioned by the applicant in the above background technology column but not limited to the mentioned patent documents, and thus the applicant will not elaborate on them.

[0055] In summary, the technical solution provided by the utility model makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. An electric wheelchair with adjustable lying posture, comprising a frame (1), the frame (1) comprising a frame front wall panel (11), a frame rear wall panel (12), a frame wall panel left support connecting cross beam (13) and a frame wall panel right support connecting cross beam (14), the frame front and rear wall panels (11, 12) are arranged face to face with each other, the frame wall panel left support connecting cross beam (13) is fixedly connected between the left ends of the frame front and rear wall panels (11, 12) facing each other, and the frame wall panel right support connecting cross beam (14) is rotatably arranged between the right ends of the frame front and rear wall panels (11, 12) facing each other, and a first support connecting cross beam (14) is arranged on the front side of the left end of the frame front wall panel (11) A front wheel (111), a first driving wheel (112) is arranged at the front right end of the front wall plate (11) of the vehicle frame, a second front wheel (121) is arranged at the rear left end of the rear wall plate (12) of the vehicle frame, and a second driving wheel (122) is arranged at the rear right end of the rear wall plate (12) of the vehicle frame, the first and second front wheels (111, 121) correspond to each other front and back, and the first and second driving wheels (112, 122) also correspond to each other front and back, a seat (2) and a backrest (3), the seat (2) is connected to the center position of the upper part of the opposite side of the front and rear wall plates (11, 12) of the vehicle frame, and a pedal mechanism is connected to the left end of the seat (2) so as to be adjusted left and right. (21), a front armrest (22) is hingedly provided between the front side of the right end of the seat (2) and the front side of the backrest (3), and a rear armrest (23) is hingedly provided between the rear side of the right end of the seat (2) and the rear side of the backrest (3) and at a position corresponding to the front armrest (22), and the lower part of the backrest (3) is hingedly connected to the right end of the seat (2); an electrical controller (10), a manual operation controller (20) and a group of batteries (30), the electrical controller (10) is arranged between the right ends of the front and rear wall panels (11, 12) of the frame and is electrically connected to the manual operation controller (20), and the manual operation controller (20) is arranged on the rear armrest (2 3), a group of batteries (30) is arranged below the seat (2) and is electrically connected to the electrical controller (10), the first and second drive wheels (112, 122) are electrically connected to the electrical controller (10); an electric thrust mechanism (4), a rear support mechanism (5) and a seat back angle adjustment mechanism (6), the electric thrust mechanism (4) is arranged between the left support connecting beam (13) of the frame wall panel and the rear support mechanism (5), the rear support mechanism (5) is connected between the right support connecting beam (14) of the frame wall panel and the right end of the seat (2), and the seat back angle adjustment mechanism (6) is arranged on the seat back (3), characterized in that: The electric thrust mechanism (4) comprises a push cylinder drive motor (41) and an electric push cylinder (42), the push cylinder drive motor (41) is connected to the push cylinder drive motor reduction box (411) in a transmission manner and is electrically connected to the electrical controller (10), and the push cylinder drive motor reduction box (411) together with the push cylinder drive motor (41) is hinged to the rear support mechanism (5) through a reduction box hinge ear (4111), the electric push cylinder (42) is matched with the push cylinder drive motor reduction box (411) in a transmission manner, and the electric push cylinder push rod (421) of the electric push cylinder (42) is hinged to the middle part of the left support connecting beam (13) of the frame wall panel, and the rear support mechanism (5) comprises a pair of connecting shafts hingedly connected The invention relates to a pair of articulated arms (51), a reduction gearbox articulated ear articulated shaft (52), an articulated arm connecting shaft (53) and a pair of articulated arm connecting shaft roller seats (54), wherein the pair of connecting shaft articulated arms (51) correspond to each other front and back and the middle right side of the pair of connecting shaft articulated arms (51) is fixed to the middle of the length direction of the right supporting connecting cross beam (14) of the frame wall panel, the reduction gearbox articulated ear articulated shaft (52) is fixed between the lower ends of the pair of connecting shaft articulated arms (51), the reduction gearbox articulated ear (4111) is articulated to the middle of the length direction of the reduction gearbox articulated ear articulated shaft (52), and a pair of articulated arm connecting shaft roller seats (54) are fixed to the right end of the seat (2), and the pair of articulated arm connecting shaft roller seats (54) are fixed to the right end of the seat (2). ) and are provided with left and right rolling grooves (541) of articulated arm connecting shaft rollers at corresponding positions, both ends of the articulated arm connecting shaft (53) protrude from the articulated arm connecting shaft roller seats (54) and are connected to the upper ends of a pair of connecting shaft articulated arms (51), and at the positions of the articulated arm connecting shaft (53) corresponding to the left and right rolling grooves (541) of the articulated arm connecting shaft roller seats (54), an articulated arm connecting shaft roller (531) is provided, and the articulated arm connecting shaft roller (531) and the left and right rolling grooves (541) of the articulated arm connecting shaft rollers form a rolling pair, and the chair back angle adjustment mechanism (6) comprises a chair back angle adjustment push cylinder working motor (61) and a The backrest angle adjustment push cylinder (62), the backrest angle adjustment push cylinder working motor (61) is connected to the backrest angle adjustment push cylinder working motor reducer (611) in a transmission manner and is also electrically connected to the electrical controller (10), and the backrest angle adjustment push cylinder working motor reducer (611) together with the backrest angle adjustment push cylinder working motor (61) is hinged to the lower part of the backrest (3) through the backrest angle adjustment push cylinder working motor reducer hinge seat (6111), the backrest angle adjustment push cylinder (62) is matched with the backrest angle adjustment push cylinder working motor reducer (611) in a transmission manner, and the backrest angle adjustment push cylinder column (621) of the backrest angle adjustment push cylinder (62) is hinged to the upper end of the backrest (3).

2. The electric wheelchair with adjustable lying position according to claim 1, characterized in that: The seat (2) includes a seat frame, which includes a left crossbeam (24a) of the seat frame, a right crossbeam (24b) of the seat frame, a front side beam (24c) of the seat frame and a rear side beam (24d) of the seat frame, wherein the front and rear side beams (24c, 24d) of the seat frame correspond to each other in the front and rear direction of the length, the left crossbeam (24a) of the seat frame is fixed between the left ends of the front and rear side beams (24c, 24d) of the seat frame, and the right crossbeam (24b) of the seat frame is fixed between the right ends of the front and rear side beams (24c, 24d) of the seat frame. The front side beam (24c) of the seat frame has a rectangular cross-sectional shape and is provided with a front side beam cavity (24e); the rear side beam (24d) of the seat frame has a rectangular cross-sectional shape and is provided with a rear side beam cavity (24f); the lower part of the chair back (3) is hinged to one side with the right ends of the front side beam (24c) of the seat frame and the rear side beam (24d) of the seat frame; the footrest mechanism (21) is connected to the front side beam (24c) of the seat frame and the rear side beam (24d) of the seat frame in a manner that is adjustable left and right at a position corresponding to the front side beam cavity (24e) and the rear side beam cavity (24f); A seat cushion (24g) is laid on the upward side; a bearing seat support shaft (15) is fixed between the opposite sides above the middle of the length direction of the front wall plate (11) and the rear wall plate (12) of the frame through a bearing seat support shaft fixing plate (151); a seat frame front pivot bearing seat (24h) is fixed on the side facing downward in the middle of the length direction of the front side beam (24c) of the seat frame, and the seat frame front pivot bearing seat (24h) corresponds to the front end of the bearing seat support shaft (15) and is rotatably matched with the front end of the bearing seat support shaft (15). A rear pivot bearing seat (24i) of the seat frame is fixed to the lower side of the middle part of the rear side beam (24d) in the longitudinal direction and at a position corresponding to the front pivot bearing seat (24h) of the seat frame. The rear pivot bearing seat (24i) of the seat frame corresponds to the rear end of the bearing seat support shaft (15) and is rotatably matched with the rear end of the bearing seat support shaft (15); an arch tube (24m) is fixed to the middle part of the right side of the right cross beam (24b) of the seat frame, and the pair of articulated arm connecting shaft roller seats (54) are fixed to the right cross beam (24b) of the seat frame and the middle part of the arch tube (24m).

3. The electric wheelchair with adjustable lying position according to claim 2, characterized in that: A battery left end support frame (24j) is fixed between the left end of the front side beam (24c) of the seat frame and the left end of the rear side beam (24d) of the seat frame, and a battery right end support frame (24k) is fixed between the right end of the front side beam (24c) of the seat frame and the right end of the rear side beam (24d) of the seat frame. The battery left end support frame (24j) and the battery right end support frame (24k) extend toward the bottom of the seat frame, the left end of a group of batteries (30) is fixed to the battery left end support frame (24j), and the right end of a group of batteries (30) is fixed to the battery right end support frame (24k).

4. The electric wheelchair with adjustable lying position according to claim 2, characterized in that: A front longitudinal arm hinge plate (24n) of a chair back frame is fixed on the right end rear side surface of the front side beam (24c) of the seat frame, and a rear longitudinal arm hinge plate (24p) of a chair back frame is fixed on the right end front side surface of the rear side beam (24d) of the seat frame and at a position corresponding to the front longitudinal arm hinge plate (24n) of the chair back frame; the chair back (3) comprises a chair back frame (31) and a chair back cushion (32); the chair back frame (31) comprises a front longitudinal arm (311) of the chair back frame, a rear longitudinal arm (312) of the chair back frame and an upper longitudinal arm connecting arm (313); the front longitudinal arm (311) of the chair back frame The lower part is hinged to the front longitudinal arm hinge seat (31111) of the chair back frame through the front longitudinal arm hinge shaft (3111) of the chair back frame, and the front longitudinal arm hinge seat (31111) of the chair back frame is fixed to the front side of the upper end of the front longitudinal arm hinge plate (24n) of the chair back frame. The lower part of the rear longitudinal arm (312) of the chair back frame is hinged to the rear longitudinal arm hinge seat (31211) of the chair back frame through the rear longitudinal arm hinge shaft (3121) of the chair back frame, and the rear longitudinal arm hinge seat (31211) of the chair back frame is fixed to the rear side of the upper end of the rear longitudinal arm hinge plate (24p) of the chair back frame. The shape of the upper connecting arm (313) of the longitudinal arm is The front lower part of the longitudinal arm upper connecting arm (313) is fixed to the upper part of the front longitudinal arm (311) of the chair back frame through the longitudinal arm upper connecting arm front transition connecting seat (3131), and the rear lower part of the longitudinal arm upper connecting arm (313) is fixed to the upper part of the rear longitudinal arm (312) of the chair back frame through the longitudinal arm upper connecting arm rear transition connecting seat (3132), and the chair back cushion (32) is laid on the right side of the chair back frame (31) and connected to the The front and rear longitudinal arms (311, 312) of the chair back frame and the left side of the longitudinal arm upper connecting arm (313) are fixed; a headrest hinge seat (3133) is fixed in the middle of the longitudinal arm upper connecting arm (313) in the length direction, the upper end of the chair back angle adjustment push cylinder column (621) is hinged to the headrest hinge seat (3133) through the push cylinder column hinge pin (6211), and a headrest (7) is connected to the headrest hinge seat (3133).

5. The electric wheelchair with adjustable lying position according to claim 4, characterized in that: An articulated seat connecting tube (314) is connected between the right side surfaces of the front longitudinal arm articulated seat (31111) of the chair back frame and the rear longitudinal arm articulated seat (31211) of the chair back frame, and a chair back folding locking and unlocking mechanism (8) is provided between the right ends of the front side beam (24c) of the chair seat frame and the rear side beam (24d) of the chair seat frame, for folding the chair back (3) onto the chair seat (2) or unfolding the chair back (3) relative to the chair seat (2) to release the folding; a pair of articulated seat articulated ears (3141) are fixed in the middle of the length direction of the articulated seat connecting tube (314), and the chair back angle adjustment push cylinder working motor reducer articulated seat (6111) is articulated with a pair of articulated seat articulated ears (3141) at a position corresponding to the pair of articulated seat articulated ears (3141) through the chair back angle adjustment push cylinder working motor reducer articulated seat pin shaft (61111) 6. The electric wheelchair with adjustable lying position according to claim 5, characterized in that: The seat back folding locking and unlocking mechanism (8) comprises a locking hook operating rod (81), a first locking hook (82), a second locking hook (83), a first locking hook shaft (84), a second locking hook shaft (85), a first locking hook pivot support shaft (86) and a second locking hook pivot support shaft (87); the front end of the locking hook operating rod (81) is fixed to the right end of the first locking hook (82) by a locking hook operating rod front screw (811) and abuts against the right side surface of the lower end of the front longitudinal arm hinge plate (24n) of the seat back frame; the rear end of the locking hook operating rod (81) is fixed to the right end of the second locking hook (83) by a locking hook operating rod rear screw (812). The first locking hook (82) is fixed at one end and abuts against the right side surface of the lower end of the rear longitudinal arm hinge plate (24p) of the seat back frame. The left end of the first locking hook (82) is formed with a first locking hook head (821). The first locking hook head cavity (8211) of the first locking hook head (821) is hooked or unhooked with the first locking hook shaft (84). The first locking hook shaft (84) is fixed to the middle part of the rear side of the front longitudinal arm hinge plate (24n) of the seat back frame. A first locking hook operating rod front end position adjustment selection hole (822) is provided at the right end of the first locking hook (82) and at a position corresponding to the right side of the front end of the locking hook operating rod (81). The second locking hook ( The left end of the second locking hook (83) is formed with a second locking hook head (831), the second locking hook head cavity (8311) of the second locking hook head (831) is hooked or unhooked with the second locking hook shaft (85), and the second locking hook shaft (85) is fixed to the middle of the front side of the hinge plate (24p) of the rear longitudinal arm of the seat back frame, and a second locking hook operating rod rear end position adjustment selection hole (832) is provided at the right end of the second locking hook (83) and at a position corresponding to the right side of the rear end of the locking hook operating rod (81), and the first locking hook pivot support shaft (86) is fixed to the hinge plate of the front longitudinal arm of the seat back frame at a position located to the right of the first locking hook shaft (84). On the rear side of the plate (24n), the second locking hook pivot support shaft (87) is fixed on the front side of the rear longitudinal arm hinge plate (24p) of the chair back frame at a position to the right of the second locking hook shaft (85), the middle part of the first locking hook (82) is pivotally matched with the first locking hook pivot support shaft (86), and the middle part of the second locking hook (83) is pivotally matched with the second locking hook pivot support shaft (87); wherein the first and second locking hooks (82, 83) correspond to each other front to back; the first and second locking hook shafts (84, 85) correspond to each other; the first and second locking hook pivot support shafts (86, 87) correspond to each other front to back.

7. The electric wheelchair with adjustable reclining position according to claim 2, characterized in that: The footrest mechanism (21) comprises a front footrest (211), a front footrest articulated arm (212), a front footrest articulated arm fixing frame (213), a front footrest articulated arm telescopic adjustment rod locking screw knob (214), a rear footrest (215), a rear footrest articulated arm (216), a rear footrest articulated arm fixing frame (217) and a rear footrest articulated arm telescopic adjustment rod locking screw knob (218). The front footrest (211) is hinged to the front footrest articulated arm (212). The front footrest articulated arm fixing frame (213) is fixed to the upper end of the front footrest articulated arm (212) at the lower end, and a front footrest articulated arm fixing frame adjustment rod (2131) is fixed in a horizontal state on the right side of the front footrest articulated arm fixing frame (213). The front footrest articulated arm fixing frame adjustment rod (2131) is matched with the front side beam cavity (24e) of the front side beam (24c) of the seat frame by plugging and pulling left and right adjustment. The front footrest articulated arm telescopic adjustment rod locking screw knob (214) is rotated The front side of the left end of the front side beam (24c) of the seat frame is arranged and extends into the front side beam cavity (24e) to lock the front footrest articulated arm fixing frame adjustment rod (2131) in the adjusted position. The rear footrest (215) is hinged to the lower end of the rear footrest articulated arm (216). The rear footrest articulated arm fixing frame (217) is fixed to the upper end of the rear footrest articulated arm (216). A rear footrest is fixed in a horizontal state on the right side of the rear footrest articulated arm fixing frame (217). The rear footrest articulated arm fixing frame adjustment rod (2171) is matched with the rear beam cavity (24f) of the rear beam (24d) of the seat frame for left and right plug-in adjustment. The rear footrest articulated arm telescopic adjustment rod locking screw knob (218) is screwed on the rear side of the left end of the rear beam (24d) of the seat frame and extends into the rear beam cavity (24f) to lock the rear footrest articulated arm fixing frame adjustment rod (2171) in the adjusted position.

8. The electric wheelchair with adjustable lying position according to claim 4, characterized in that: A front armrest body articulated seat hinge joint (3112) is fixed to the middle front side of the height direction of the front longitudinal arm (311) of the chair back frame, and a rear armrest body articulated seat hinge joint (3122) is fixed to the middle rear side of the height direction of the rear longitudinal arm (312) of the chair back frame; the front armrest (22) comprises a front armrest body bracket articulated rod (221), a front armrest body bracket (222) and a front armrest body (223); the front armrest body bracket articulated rod (221) is formed with a front armrest body bracket articulated rod articulated seat (2211) at one end of the front armrest body bracket articulated rod (221) facing the front side beam (24c) of the seat frame, and a front armrest body is fixed to the front side of the right end of the front side beam (24c) of the seat frame. The front armrest body bracket hinge rod hinge seat (24q), the front armrest body bracket hinge rod hinge seat (2211) is hinged to the front side beam hinge seat (24q) through the front armrest body bracket hinge rod hinge seat pin screw (22111), one end of the front armrest body bracket hinge rod (221) facing the front armrest body bracket (222) is hinged to the left end of the front armrest body bracket (222) through the front armrest body bracket hinge rod hinge screw shaft (2212), the middle part of the side facing downward of the front armrest body (223) is hinged to the right end of the front armrest body bracket (222) through the front armrest body hinge ear (2231), and the right end of the front armrest body (223) is hinged to the front armrest body bracket (222) through the front armrest body hinge seat (2232). ) is hinged to the front armrest body hinge seat hinge joint (3112) by means of hinge screws; the rear armrest (23) comprises a rear armrest body bracket hinge rod (231), a rear armrest body bracket (232) and a rear armrest body (233); one end of the rear armrest body bracket hinge rod (231) facing the rear side beam (24d) of the seat frame is formed with a rear armrest body bracket hinge rod hinge seat (2311); a rear side beam hinge seat (24r) is fixed to the rear side of the right end of the rear side beam (24d) of the seat frame; the rear armrest body bracket hinge rod hinge seat (2311) is connected to the rear side beam hinge seat by a rear armrest body bracket hinge rod hinge seat pin screw (23111) The connecting seat (24r) is hinged, one end of the rear armrest body bracket hinge rod (231) facing the rear armrest body bracket (232) is hinged to the left end of the rear armrest body bracket (232) through the rear armrest body bracket hinge rod hinge screw shaft (2312), the middle part of the side facing downward of the rear armrest body (233) is hinged to the right end of the rear armrest body bracket (232) through the rear armrest body hinge ear (2331), and the right end of the rear armrest body (233) is hinged to the rear armrest body hinge seat hinge joint (3122) through the rear armrest body hinge seat (2332) with the aid of a hinge screw, and the manual operation controller (20) is fixed to the left end of the front armrest body (233).

9. The electric wheelchair with adjustable lying position according to claim 3, characterized in that: The battery left end support fixing frame (24j) is composed of a pair of battery left end fixing beam longitudinal arms (24s) and a battery left end fixing beam transverse arm (24t), the upper ends of the pair of battery left end fixing beam longitudinal arms (24s) are respectively fixed to the left end of the front side beam (24c) of the seat frame and the left end of the rear side beam (24d) of the seat frame facing one side, and the battery left end fixing beam transverse arm (24t) is fixed between the lower ends of the pair of battery left end fixing beam longitudinal arms (24s); the left side of the group of batteries (30) is fixed to the battery left end fixing beam transverse arm (24t) The battery right end support fixing frame (24k) is composed of a pair of battery right end fixing beam longitudinal arms (24u) and a battery right end fixing beam transverse arm (24v), the upper ends of the pair of battery right end fixing beam longitudinal arms (24u) are respectively fixed to the right end of the front side beam (24) of the seat frame and the right end of the rear side beam (24d) of the seat frame facing one side, and the battery right end fixing beam transverse arm (24v) is fixed between the lower ends of the pair of battery right end fixing beam longitudinal arms (24u); the right end of the group of batteries (30) is fixed to the battery right end fixing beam transverse arm (24v).

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