Portable folding wheelchair

Abstract

The utility model provides a portable folding wheelchair which comprises a wheelchair body, the wheelchair body comprises a first frame rod, a second frame rod, a seat part and a backrest part, and the seat part is rotationally connected to the inner side of the backrest part; the left side and the right side of the backrest part are rotationally connected with one ends of first frame rods correspondingly. The other end of the frame rod I is movably connected with a front wheel; the bottoms of the left side and the right side of the backrest part are rotationally connected with one ends of second frame rods correspondingly. The other end of the frame rod II is movably connected with a rear wheel; a first connecting rod is arranged between the frame rod I and the frame rod II; the two ends of the first connecting rod are rotationally connected with the first frame rod and the second frame rod correspondingly. A second connecting rod is arranged between the frame rod I and the seat part; the two ends of the first connecting rod are rotationally connected with the frame rod I and the seat part respectively; a locking mechanism for locking the wheelchair body after the wheelchair body is opened is arranged between the bottom of the seat part and the frame rod II; a pulling assembly is arranged between the two second frame rods.

Description

Technical Field

[0001] The utility model relates to the field of wheelchairs, in particular to a portable folding wheelchair. Background Art

[0002] The wheelchair, a wheeled mobility device designed for people with limited mobility, has evolved through a rich history of technology and humanity, evolving from hospital-only use to widespread household use, and ultimately to today's intelligent and customizable wheelchairs. With the reform and opening-up policy and rapid economic growth, wheelchairs have gradually entered ordinary households, becoming an essential aid in the daily lives of the elderly, the disabled, and other people with limited mobility. During this period, wheelchair production has increased significantly, and technology has continued to advance, gradually meeting a wider range of needs.

[0003] In the use environment of medical institutions such as hospitals and sanatoriums, in order to serve patients and those in need of rehabilitation, these wheelchairs need to be simple in design and mainly meet basic mobility assistance functions. In hospitals, sanatoriums and other places, people with limited mobility need to be frequently transferred temporarily, such as from wards to examination rooms, treatment rooms or rehabilitation areas. Traditional wheelchairs are expensive to produce and are large in size, making them inconvenient to store and carry. Therefore, it is particularly important to design a lightweight wheelchair suitable for frequent transfers in hospitals and sanatoriums. Utility Model Content

[0004] In order to solve the problems of high manufacturing cost, large size, inconvenient storage and carrying, and unsuitable for frequent temporary transfer of patients and those in need of rehabilitation in the conventional wheelchair in the prior art, the present invention provides a convenient folding wheelchair;

[0005] The utility model provides a portable folding wheelchair adopting the following technical solutions:

[0006] A portable folding wheelchair comprises a wheelchair body, the wheelchair body comprises a frame rod 1, a frame rod 2, a seat part and a backrest part, the seat part is rotatably connected to the inner side of the backrest part; the left and right sides of the backrest part are rotatably connected to one end of the frame rod 1; the other end of the frame rod 1 is movably connected to the front wheel; the left and right bottom sides of the backrest part are rotatably connected to one end of the frame rod 2; the other end of the frame rod 2 is movably connected to the rear wheel; a first connecting rod is provided between the frame rod 1 and the frame rod 2; the first connecting rod The two ends are rotatably connected to the first frame rod and the second frame rod respectively; a second connecting rod is provided between the first frame rod and the seat portion; the two ends of the second connecting rod are rotatably connected to the first frame rod and the seat portion respectively; the wheelchair body can be folded by relative rotation of the first frame rod, the second frame rod, the first connecting rod, the seat portion, the backrest portion, and the second connecting rod; a locking mechanism is provided between the bottom of the seat portion and the second frame rod for locking the wheelchair body after it is opened; a pulling assembly is provided between the two second frame rods to facilitate carrying the wheelchair body after it is folded;

[0007] Furthermore, at least one support rod for improving the overall strength is respectively provided between the two first frame rods and the two second frame rods, and the support rod is provided at a position that does not hinder the folding of the frame body;

[0008] Furthermore, the top of the seat portion is a sponge pad; the portion of the backrest that contacts the user's back is a detachable fabric cover;

[0009] Furthermore, the front wheels are universal wheels that can rotate 360 degrees horizontally; the rear wheels are non-rotatable directional wheels;

[0010] Furthermore, the locking mechanism includes a locking plate, a fixed shaft, a tension spring, a positioning bolt, and an unlocking handle. Fixed shafts are installed on two opposite inner sides of the bottom of the backrest; the two fixed shafts are rotatably connected to the locking plates respectively; the two locking plates and the bottom of the backrest are fixedly connected with tension springs respectively; the two opposite side walls of the two frame rods are respectively threadedly connected with positioning bolts; the interior of the locking plate is provided with slots corresponding to the positioning bolts for use with the positioning bolts; an unlocking handle is welded between the two locking plates;

[0011] Furthermore, the pulling assembly includes a fixed seat, a movable seat, a telescopic rod, and a handle. The two frame bars are respectively fixedly connected with a mounting beam 1 and a mounting beam 2, and the mounting beam 2 is arranged on the upper side of the mounting beam 1; the outer wall of the mounting beam 1 is fixed with a fixed seat by bolts; the outer wall of the mounting beam 2 is fixed with a movable seat by bolts; one end of the telescopic rod is fixedly installed inside the fixed seat by bolts, and the other end of the telescopic rod passes through the movable seat and is fixed with a handle by bolts;

[0012] Furthermore, the left and right sides of the backrest are rotatably connected to armrests respectively; the connection between the armrest and the backrest is provided with a damper;

[0013] Furthermore, a pedal rod is rotatably connected between the two frame rods; the pedal rod can be limited by a support rod between the two frame rods;

[0014] Furthermore, the outer side walls of the two frame rods are respectively installed with brake parts through bolts; the rear side of the backrest is installed with a brake controller through bolts; the brake controller and the brake part are connected through a brake wire.

[0015] In summary, the beneficial effects of the present invention are as follows:

[0016] The utility model adds a four-bar linkage of a seat portion, a backrest portion, a first frame rod and a second frame rod, and adds a locking mechanism and a handle assembly. When in use, the staff can release the lock between the locking plate and the locking bolt by pulling the unlocking handle. At this time, the backrest portion can be folded toward the seat portion, and the second frame rod can be folded toward the first frame rod. The armrest and footrest rods are lifted. At this time, part of the pulling assembly changes from a state hidden at the bottom of the seat portion to an exposed state. Thereafter, the handle is pulled and pulled out through the telescopic rod. At this time, the frame body is in a folded state and its volume is reduced. The frame body can be pulled by holding the handle through the telescopic rod, with the front wheel as the fulcrum and as the main moving component. It is easy to carry and transport anywhere, and is suitable for frequent temporary transportation of patients and people in need of rehabilitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the rear side of the overall structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 A magnified schematic diagram of part A;

[0020] Figure 4 This is a schematic diagram of the overall structure of the utility model after folding;

[0021] Figure 5 This is a schematic diagram of the rear side of the overall structure of the utility model after folding;

[0022] Figure 6 It is a side plan view schematic diagram of the utility model in the unfolded state;

[0023] Figure 7 It is a side plan view schematic diagram of the utility model in the folded state.

[0024] As shown in the figure: 1-frame rod 1, 10-front wheel, 11-frame rod 2, 111-rear wheel, 12-first connecting rod, 13-second connecting rod, 14-seat part, 15-backrest, 2-mounting beam 1, 21-mounting beam 2, 3-fixed seat, 31-movable seat, 32-telescopic rod, 33-handle, 4-locking plate, 41-fixed shaft, 42-tension spring, 43-positioning bolt, 44-unlocking handle, 5-brake controller, 51-brake part, 6-foot lever, 7-armrest. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-7 The utility model is further described in detail:

[0026] The present invention discloses a portable folding wheelchair. Figure 1 、 2As shown in Figures 4 and 5, a portable folding wheelchair comprises a wheelchair body, which comprises a frame rod 1, a frame rod 2 11, a seat portion 14 and a backrest portion 15, wherein the seat portion 14 is rotatably connected to the inner side of the backrest portion 15; the left and right sides of the backrest portion 15 are rotatably connected to one end of the frame rod 1; the other end of the frame rod 1 is movably connected to the front wheel 10; the left and right bottom sides of the backrest portion 15 are rotatably connected to one end of the frame rod 2 11; the other end of the frame rod 2 11 is movably connected to the rear wheel 111; a first connecting rod 12 is provided between the frame rod 1 and the frame rod 2 11; the two ends of the first connecting rod 12 are respectively connected to the frame Rod 1 and frame rod 2 11 are rotatably connected; a second connecting rod 13 is provided between the frame rod 1 and the seat portion 14; both ends of the second connecting rod are rotatably connected to the frame rod 1 and the seat portion 14 respectively; the wheelchair body can be folded by relative rotation of the frame rod 1, the frame rod 2 11, the first connecting rod 12, the seat portion 14, the backrest portion 15, and the second connecting rod 13; a locking mechanism is provided between the bottom of the seat portion 14 and the frame rod 2 11 to lock the wheelchair body after it is opened; a pulling assembly is provided between the two frame rods 2 11 to facilitate carrying the wheelchair body after it is folded; in this embodiment, the frame rod 1 and the frame rod 2 11 are used as The main load-bearing and supporting structures of the wheelchair are connected to the front wheel 10 and the rear wheel 111 respectively, ensuring the stability and mobility of the wheelchair; the frame bar 1 and the frame bar 2 11 achieve relative movement through rotation connection, which is the basis for the folding and unfolding of the wheelchair; the seat part 14 is located on the upper side of the frame bar 1 and the frame bar 2 11, and is the main part for the user to sit on; the seat part 14 is connected to the backrest 15 through a rotation connection, allowing the user to fold it according to needs; the backrest 15 provides back support for the user, and its left and right sides are respectively connected to one end of the frame bar 1; the design of the backrest 15 not only focuses on comfort, but also takes into account the connection with the seat part 14 work in coordination to realize the folding function of the wheelchair; the four-bar linkage consisting of the frame bar 1, the frame bar 2 11, the first connecting rod 12 and the second connecting rod 13 is the core of the wheelchair folding; through the relative rotation between the various components, the wheelchair can be folded and unfolded while maintaining structural stability; this design not only ensures the stability of the wheelchair, but also improves the convenience of folding; when the wheelchair is in the open state, the locking mechanism firmly locks the various parts of the wheelchair together through the cooperation of the locking plate 4 and the positioning bolt 43 to prevent accidental folding; when the user needs to fold the wheelchair, it can be easily folded by simply unlocking the locking relationship;

[0027] like Figure 1As shown, at least one support rod is respectively provided between the two frame rods 1 and the two frame rods 2 11 for improving the overall strength, and the support rod is provided at a position that does not hinder the folding of the frame body. In this embodiment, at least one support rod is respectively provided between the two frame rods 1 and the two frame rods 2 11. The main function of these support rods is to enhance the overall rigidity and stability of the wheelchair. Through reasonable layout and connection, these support rods enable the wheelchair to remain stable when bearing the user's weight and various forces during movement, and prevent deformation or damage.

[0028] It is worth noting that the support rods need to be positioned so as not to hinder the folding operation of the wheelchair while also being able to fully play their role in enhancing strength. Therefore, the position, number and connection method of the support rods need to be fully considered during the design to achieve the best balance.

[0029] The top of the seat portion 14 is a sponge pad; the portion of the backrest 15 that contacts the user's back is a detachable fabric cover. In this embodiment, a sponge pad is used as the filling of the seat portion 14 to improve sitting comfort. The sponge pad has good elasticity and breathability, which can effectively disperse the pressure on the user's buttocks and reduce discomfort caused by long-term sitting. The portion of the backrest 15 that contacts the user's back is a detachable fabric cover, which not only ensures comfort but also facilitates cleaning and replacement. The fabric cover is soft and breathable, and can fit the user's back curve to provide comfortable support.

[0030] like Figure 1 、 4 As shown, the front wheel 10 is a universal wheel that can rotate 360 degrees horizontally; the rear wheel 111 is a fixed rotatable wheel. In this embodiment, the front wheel 10 is designed as a universal wheel and can rotate 360 degrees freely. This design makes the wheelchair more flexible and convenient when turning and changing direction, and improves the user's controllability and safety.

[0031] like Figure 1 、 2As shown in Figure 3, the locking mechanism includes a locking plate 4, a fixed shaft 41, a tension spring 42, a positioning bolt 43, and an unlocking handle 44. Fixed shafts 41 are installed on the two opposite inner sides of the bottom of the backrest portion 15; the two fixed shafts 41 are rotatably connected to the locking plates 4 respectively; the two locking plates 4 and the bottom of the backrest portion 15 are fixedly connected with tension springs 42; the opposite side walls of the two frame rods 11 are respectively threadedly connected with positioning bolts 43; the internal corresponding positioning bolts 43 of the locking plate 4 are respectively provided with card slots for use with the positioning bolts 43; an unlocking handle 44 is welded between the two locking plates 4; in this embodiment, the wheelchair is stably locked in the open state through the cooperation of the locking plate 4, the fixed shaft 41, the tension spring 42, the positioning bolt 43 and the unlocking handle 44; when the wheelchair needs to be folded, the user only needs to pull the unlocking handle 44 to release the lock between the locking plate 4 and the locking bolt, thereby unlocking the locking relationship and easily achieving the folding operation;

[0032] like Figure 1 、 2 As shown in , 4 and 5, the pulling assembly includes a fixed seat 3, a movable seat 31, a telescopic rod 32 and a handle 33. The two frame bars 11 are fixedly connected with the mounting beam 1 2 and the mounting beam 2 21 respectively, and the mounting beam 21 is arranged on the upper side of the mounting beam 1 2; the outer wall of the mounting beam 1 2 is fixed with the fixed seat 3 by bolts; the outer wall of the mounting beam 21 is fixed with the movable seat 31 by bolts; one end of the telescopic rod 32 is fixedly installed inside the fixed seat 3 by bolts, and the other end of the telescopic rod 32 passes through the movable seat 31 and is installed with the handle 33 by bolts; in this embodiment, when the wheelchair is not folded, the pulling assembly is hidden under the lower side of the seat portion 14; in the folded state, the pulling assembly pulls out the handle 33 through the telescopic rod 32, so that the user can easily carry and move the wheelchair. The design of the telescopic rod 32 not only ensures the stability and load-bearing capacity of the handle 33, but also makes the wheelchair more compact and easy to carry after folding.

[0033] like Figure 1 As shown, the left and right sides of the backrest 15 are rotatably connected to the armrests 7 respectively; the connection between the armrests 7 and the backrest 15 is provided with a damper; in this embodiment, the armrests 7 are rotatably connected to the left and right sides of the backrest 15 to provide additional support and stability for the user; the design of the armrests 7 takes into account ergonomic principles, allowing the user to maintain a comfortable posture during use; at the same time, the connection between the armrests 7 and the backrest 15 is provided with a damper device, which can adjust the angle and position of the armrests 7 according to user needs; when folding, the armrests 7 need to be flipped up;

[0034] like Figure 1As shown, a footrest rod 6 is rotatably connected between the two frame rods 1; the footrest rod 6 can be limited by the support rod between the two frame rods 1; in this embodiment, the footrest rod 6 is rotatably connected between the two frame rods 1 to provide space for the user to place his feet; the design of the footrest rod 6 takes into account the user's comfort and safety requirements, and the support rod is used to limit it to prevent sliding and accidents;

[0035] like Figure 1 As shown, the outer side walls of the two frame rods 11 are respectively installed with brake parts 51 by bolts; the rear side of the backrest 15 is installed with a brake controller 5 by bolts; the brake controller 5 and the brake part 51 are connected by a brake line; in this embodiment, the brake system includes two parts: the brake part 51 and the brake controller 5; the brake part 51 is installed on the outer side wall of the frame rod 11 and is connected to the brake controller 5 by a brake line; the user can control the braking and releasing actions of the brake part 51 by operating the brake controller 5 to realize the braking and stopping functions of the wheelchair; this design not only ensures the safety of the wheelchair but also improves the user's controllability.

[0036] The implementation principle of the embodiment of the present utility model is:

[0037] like Figure 6 、 7 The figure is a plan view of the folding transformation of the utility model. The utility model is mainly used in various hospitals and sanatoriums to transport people with limited mobility. When in use, the person only needs to sit on the upper side of the seat portion 14, and the staff can assist the upper side of the backrest 15 to transport the person. After the transfer is completed, the staff can release the lock between the locking plate 4 and the locking bolt by pulling the unlocking handle 44. At this time, the backrest 15 can be folded toward the seat portion 14, and the frame rod 2 can be folded toward the frame rod 1. Lift the armrest 7 and the footrest 6. At this time, the part of the pulling assembly changes from a state hidden at the bottom of the seat portion 14 to an exposed state. Then, pull the handle 33 and pull the handle 33 out through the telescopic rod 32. At this time, the frame body is in a folded state and the volume is reduced. By pulling the handle 33 and the telescopic rod 32, the front wheel 10 is used as a fulcrum and is pulled as the main moving component. It is convenient to carry and transport anywhere, and the reduced volume is also convenient for batch stacking, reducing the occupied space. In addition, the front wheel 10 uses a universal wheel, which provides flexibility for the whole.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable folding wheelchair, comprising a wheelchair body, characterized in that: The wheelchair body comprises a frame rod 1 (1), a frame rod 2 (11), a seat portion (14) and a backrest portion (15), wherein the seat portion (14) is rotatably connected to the inner side of the backrest portion (15); the left and right sides of the backrest portion (15) are rotatably connected to one end of the frame rod 1 (1); the other end of the frame rod 1 (1) is movably connected to the front wheel (10); the left and right bottom sides of the backrest portion (15) are rotatably connected to one end of the frame rod 2 (11); the other end of the frame rod 2 (11) is movably connected to the rear wheel (111); a first connecting rod (12) is provided between the frame rod 1 (1) and the frame rod 2 (11); the two ends of the first connecting rod (12) are respectively connected to the frame rod 1 (11). The frame rod 1 (1) and the frame rod 2 (11) are rotatably connected; a second connecting rod (13) is provided between the frame rod 1 (1) and the seat portion (14); both ends of the second connecting rod (13) are rotatably connected to the frame rod 1 (1) and the seat portion (14) respectively; the wheelchair body can be folded by relative rotation of the frame rod 1 (1), the frame rod 2 (11), the first connecting rod (12), the seat portion (14), the backrest portion (15), and the second connecting rod (13); a locking mechanism for locking the wheelchair body after it is opened is provided between the bottom of the seat portion (14) and the frame rod 2 (11); and a pulling assembly is provided between the two frame rods 2 (11) to facilitate the wheelchair body to be carried after it is folded.

2. A portable folding wheelchair according to claim 1, characterized in that At least one support rod for improving the overall strength is respectively arranged between the two frame rods (1) and the two frame rods (11), and the support rod is arranged at a position that does not hinder the folding of the frame body.

3. A portable folding wheelchair according to claim 1, characterized in that The top of the seat portion (14) is a sponge pad; the portion of the backrest portion (15) that contacts the user's back is a detachable fabric cover.

4. A portable folding wheelchair according to claim 1, characterized in that The front wheel (10) is a universal wheel that can rotate horizontally 360 degrees; the rear wheel (111) is a non-rotatable directional wheel.

5. A portable folding wheelchair according to claim 1, characterized in that The locking mechanism comprises a locking plate (4), a fixed shaft (41), a tension spring (42), a positioning bolt (43), and an unlocking handle (44); the fixing shafts (41) are installed on two opposite inner sides of the bottom of the backrest (15); the two fixed shafts (41) are respectively rotatably connected to the locking plates (4); the tension springs (42) are respectively fixedly connected between the two locking plates (4) and the bottom of the backrest (15); the positioning bolts (43) are respectively threadedly connected on the opposite side walls of the two frame rods (11); the interior of the locking plate (4) is provided with a slot corresponding to the positioning bolt (43) for use with the positioning bolt (43); and an unlocking handle (44) is welded between the two locking plates (4).

6. A portable folding wheelchair according to claim 1, characterized in that The pulling assembly comprises a fixed seat (3), a movable seat (31), a telescopic rod (32), and a handle (33); the two frame rods (11) are respectively fixedly connected with a mounting beam (2) and a mounting beam (21); the mounting beam (21) is arranged on the upper side of the mounting beam (2); the outer wall of the mounting beam (2) is fixed with a fixed seat (3) by bolts; the outer wall of the mounting beam (21) is fixed with a movable seat (31) by bolts; one end of the telescopic rod (32) is fixedly installed inside the fixed seat (3) by bolts, and the other end of the telescopic rod (32) passes through the movable seat (31) and is fixed with a handle (33) by bolts.

7. A portable folding wheelchair according to claim 1, characterized in that The left and right sides of the backrest (15) are rotatably connected to armrests (7), and a damper is provided at the connection between the armrests (7) and the backrest (15).

8. A portable folding wheelchair according to claim 2, characterized in that A pedal rod (6) is rotatably connected between the two frame rods (1); the pedal rod (6) can be limited by a support rod between the two frame rods (1).

9. A portable folding wheelchair according to claim 1, characterized in that The outer side walls of the two frame rods (11) are respectively installed with brake parts (51) through bolts; the rear side of the backrest (15) is installed with a brake controller (5) through bolts; the brake controller (5) and the brake part (51) are connected through a brake line.

Images