CN217611775U

CN217611775U - Hand-operated folding wheelchair

Info

Publication number: CN217611775U
Application number: CN202221606960.9U
Authority: CN
Inventors: 王忠胜; 胡国仪; 周守雄; 黄泽辉
Original assignee: Foshan Dahao Medical Technology Co ltd
Current assignee: Foshan Dahao Medical Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-10-21
Anticipated expiration: 2032-06-17

Abstract

The utility model discloses a manual folding wheelchair, it includes folding chair frame, back pad, cushion and truckle, and the truckle setting is in the bottom of folding chair frame, and folding chair frame is including mutual articulated back frame and cushion folding leg, and back pad, cushion set up respectively on back frame and cushion folding leg, the cushion folding leg is including controlling two sets of folding arm subassemblies, the left and right sides of back frame is still respectively through from the horizontal bolt that restores to the throne and control two sets of folding arm subassembly locking coordination, and two are from the horizontal bolt that restores to the throne and pass through the linkage of flexible piece. The utility model discloses a back frame and cushion folding leg realize folding through the activity that rotates the pin joint, from horizontal bolt of restoring to the throne about concertina movement lock with back frame and cushion folding leg, consequently, the wheelchair of expansion state receives powerful rotation its pin joint and also can not lead to the locking position unblock by oneself, safe and reliable more.

Description

Hand-operated folding wheelchair

Technical Field

The utility model relates to a wheelchair, in particular to a manual folding wheelchair.

Background

Present manual folding wheelchair includes folding chair frame, back pad, cushion and truckle, and the truckle setting is in the bottom of folding chair frame, and folding chair frame includes mutual articulated back frame and cushion folding leg, and back pad, cushion set up respectively on back frame and cushion folding leg, and the cushion folding leg is including controlling two sets of folding arm subassemblies, the rotation latch hook that still passes through automatic re-setting respectively in the left and right sides of back frame is with controlling two sets of folding arm subassemblies locking cooperation, and the rotation latch hook passes through two handle drive respectively, or two rotation latch hooks pass through the horizontal pole linkage, through the upset horizontal pole, and two rotation latch hook upsets of control are realized unblanking. The operation is inconvenient in a mode of driving by two handles, and the two hands are required to be synchronously operated; and through the horizontal pole control, because the horizontal pole leads to the horizontal pole to warp easily through its two rotatory latch hooks of rigid linkage after long-term the use to the deviation appears in rotatory latch hook active position, easy unhook. In addition, the movement mode of the rotating lock hook and the movement mode of the hinge point of the folding frame of the wheelchair are rotation, and when the folding frame of the cushion collides with a step and the like in the pushing process of holding the backrest frame, the lock hook is easy to unhook, so that certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rational in infrastructure, folding chair frame through control horizontal bolt locking, control horizontal bolt unblock manual folding wheelchair who locks simultaneously.

The purpose of the utility model is realized like this:

the utility model provides a manual folding wheelchair, includes folding chair frame, back pad, cushion and truckle, and the truckle setting is in the bottom of folding chair frame, and folding chair frame is including mutual articulated back frame and cushion folding leg, and back pad, cushion set up on back frame and cushion folding leg respectively, its characterized in that: the cushion folding leg includes about two sets of folding arm subassemblies, the left and right sides of back frame still respectively through from the horizontal bolt of restoring to the throne with about two sets of folding arm subassemblies locking cooperation, two from the horizontal bolt of restoring to the throne through the flexible piece linkage.

The purpose of the utility model can also adopt the following technical measures to solve:

as a more specific scheme, the left and right groups of folding arm assemblies are respectively arranged outside the left and right sides of the backrest cushion, and the two self-resetting cross bolts are respectively arranged on the left and right sides of the backrest cushion; or the left and right groups of folding arm components are respectively arranged in the left and right sides of the backrest cushion, and the two self-resetting cross bolts are respectively arranged on the left and right groups of folding arm components.

As a further scheme, the self-resetting transverse bolt comprises a pin shaft, a shell and a reset spring, the shell is sleeved outside the pin shaft and is in axial sliding fit with the pin shaft, two ends of the pin shaft extend out of the shell, a limiting bulge is arranged on the pin shaft corresponding to the inner side of the shell, and the reset spring is arranged in the shell and is abutted against the limiting bulge and the inner wall of the shell; the shell is arranged on the backrest cushion or the folding arm component, one end of the folding arm component or the backrest cushion, which corresponds to the pin shaft, is provided with a plug hole, and the other end of the pin shaft is connected with the flexible component.

As a further scheme, the flexible part is a steel wire, and a protective sleeve is arranged outside the steel wire, so that the steel wire is prevented from cutting hands.

As a further scheme, the shell of the self-resetting transverse bolt comprises a sleeve and an end cover, one end of the sleeve is opened and is covered by the end cover, the other end of the sleeve and the end cover are respectively provided with through holes corresponding to two ends of the pin shaft, and the pin shaft extends out of the through holes; the reset spring is a compression spring which is sleeved outside the pin shaft, and two ends of the compression spring are respectively abutted against the limiting bulge and the inner end face of the end cover; the backrest cushion or the folding arm component is provided with a connecting lug, the connecting lug is provided with a screw hole penetrating through the left side and the right side of the connecting lug, the sleeve is provided with an external thread and is in threaded connection with the screw hole, and the sleeve is also provided with a locking nut.

As a further scheme, the folding arm assembly comprises a side beam, a front arm, a rear arm, a lower connecting rod and a bottom beam, the seat cushion is arranged on the side beam, and the rear end, the middle part and the front end of the side beam are respectively hinged with the middle part of the backrest frame, the upper end of the rear arm and the upper end of the front arm; the upper end of the lower connecting rod and the rear end of the bottom beam are hinged with the middle lower part of the backrest frame, the lower end of the lower connecting rod is hinged with the middle part of the rear arm, and the front end of the bottom beam is hinged with the middle part of the front arm; the truckles comprise a front truckle and a rear truckle, the front truckle is arranged at the lower end of the front arm, and the rear truckle is arranged at the lower end of the rear arm.

As a further scheme, forearms of the left and right folding arm assemblies are connected through a front beam, rear arms of the left and right folding arm assemblies are connected through a rear beam, a hinged support is arranged at the middle lower part of the front beam, a pedal support frame is hinged on the hinged support, a pedal plate is arranged on the pedal support frame, and the rear end of the pedal support frame abuts against the front beam for limiting; the front caster wheel is connected with the front fork, and the front fork is in running fit with the front arm.

As a further scheme, bottom beams of the left and right groups of folding arm assemblies are connected through front rods and rear rods which are distributed front and back; the lower end of the backrest frame is provided with an auxiliary caster wheel, so that the backrest frame can be conveniently dragged by the auxiliary caster wheel after being folded.

As a further scheme, a handrail frame is further arranged between the side beam and the backrest frame, one end of the handrail frame is hinged to the middle upper portion of the backrest frame, a supporting rod is hinged to the middle of the handrail frame, and the lower end of the supporting rod is hinged to the middle of the side beam.

As a further scheme, the rear arm is further provided with a brake block, the upper portion of the backrest frame is provided with a wrench, and the brake block is in transmission connection with the wrench through a pull rope.

As a further scheme, a buckle and a hinged joint are arranged at the bottom of the armrest frame, the rear end of the hinged joint is hinged with the armrest frame, the front end of the hinged joint is buckled with the buckle through a lock catch, and the armrest frame is hinged with the upper end of the support rod through the hinged joint. The front end of hinge joint and buckle unblock back for only there is articulated relation between hinge joint and the handrail frame, makes the handrail frame accomodate, realizes that the lateral part of cushion is open, makes things convenient for the inconvenient person of taking action to come in and go out.

The beneficial effects of the utility model are as follows:

(1) The utility model discloses a back frame and cushion folding leg realize folding through the activity that rotates the pin joint, from horizontal bolt of restoring to the throne about concertina movement lock with back frame and cushion folding leg, consequently, the wheelchair of expansion state receives powerful rotation its pin joint and also can not lead to the locking position unblock by oneself, safe and reliable more.

(2) The utility model discloses a two about being equipped with from horizontal bolt of restoring to throne, two horizontal locking points about forming, two from horizontal bolt of restoring to throne pass through the linkage of flexible piece, and the pulling flexible piece pulls two from horizontal bolt of restoring to throne promptly simultaneously to certain deformation state and opens the unblock, and effort on the release flexible piece is from horizontal bolt automatic re-setting that restores to throne.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is another angle structure diagram of fig. 1.

Fig. 5 is a schematic view of the structure of the present invention.

Fig. 6 is a schematic structural view of the cross section C-C of fig. 5 (from the locking state of the self-resetting cross bolt).

Fig. 7 is a partially enlarged schematic view of fig. 6.

Fig. 8 is a structural diagram illustrating an unlocked state of the self-resetting cross latch in fig. 6.

Fig. 9 is a partially enlarged structural view of fig. 8.

Fig. 10 is a structural schematic view of the wheelchair of the present invention in a folded state.

Fig. 11 is a schematic sectional view of fig. 5 taken along line D-D.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

referring to fig. 1 to 11, a manual folding wheelchair comprises a folding chair frame, a backrest cushion 11, a seat cushion 51 and casters, wherein the casters are arranged at the bottom of the folding chair frame, the folding chair frame comprises a backrest frame 1 and a seat cushion folding frame 5 which are hinged with each other, the backrest cushion 11 and the seat cushion 51 are respectively arranged on the backrest frame 1 and the seat cushion folding frame 5, and the manual folding wheelchair is characterized in that: cushion folding leg 5 is including controlling two sets of folding arm subassemblies, the left and right sides of back frame 1 still respectively through from the horizontal bolt 8 of restoring to the throne with control two sets of folding arm subassemblies lock-up cooperation, two from the horizontal bolt 8 of restoring to the throne through the linkage of flexor 2.

The left and right groups of folding arm assemblies are respectively arranged outside the left and right sides of the backrest cushion 11, and the two self-resetting cross bolts 8 are respectively arranged on the left and right sides of the backrest cushion 11.

The self-reset transverse bolt 8 comprises a pin shaft 81, a shell and a reset spring 83, the shell is sleeved outside the pin shaft 81 and is in axial sliding fit with the pin shaft 81, two ends of the pin shaft 81 extend out of the shell, the pin shaft 81 is provided with a limiting bulge 811 corresponding to the inner side of the shell, and the reset spring 83 is arranged in the shell and is abutted against the limiting bulge 811 and the inner wall of the shell; the shell is arranged on the back cushion 11, one end of the folding arm component corresponding to the pin shaft 81 is provided with a plug hole 521, the other end of the pin shaft 81 is provided with a pull ring 86, and the pull ring 86 is connected with the flexible part 2.

The flexible part 2 is a steel wire, and a protective sleeve 21 is arranged outside the steel wire.

The shell of the self-resetting transverse bolt 8 comprises a sleeve 82 and an end cover 84, one end of the sleeve 82 is open and is covered by the end cover 84, the other end of the sleeve 82 and the end cover 84 are respectively provided with through holes corresponding to two ends of the pin shaft 81, and the pin shaft 81 extends out of the through holes; the return spring 83 is a compression spring, the compression spring is sleeved outside the pin shaft 81, and two ends of the compression spring respectively abut against the limiting protrusion 811 and the inner end surface of the end cover 84; the backrest cushion 11 is provided with a connecting lug 12, the connecting lug 12 is provided with a screw hole penetrating through the left side and the right side of the connecting lug, the sleeve 82 is provided with an external thread and is in threaded connection with the screw hole, the sleeve 82 is further provided with a locking nut 85, and the locking nut 85 is tightly pressed with the surface of the connecting lug 12.

The folding arm assembly comprises a side beam 52, a front arm 54, a rear arm 57, a lower connecting rod 58 and a bottom beam 53, the seat cushion 51 is arranged on the side beam 52, and the rear end, the middle part and the front end of the side beam 52 are respectively hinged with the middle part of the backrest frame 1, the upper end of the rear arm 57 and the upper end of the front arm 54; the upper end of the lower connecting rod 58 and the rear end of the bottom beam 53 are hinged with the middle lower part of the backrest frame 1, the lower end of the lower connecting rod 58 is hinged with the middle part of the rear arm 57, and the front end of the bottom beam 53 is hinged with the middle part of the front arm 54; the caster includes a front caster 31 and a rear caster 32, the front caster 31 being provided at the lower end of the front arm 54, and the rear caster 32 being provided at the lower end of the rear arm 57.

The front arms 54 of the left and right groups of folding arm assemblies are connected through a front beam 55, the rear arms 57 of the left and right groups of folding arm assemblies are connected through a rear beam 571, the middle lower part of the front beam 55 is provided with a hinged support 551, the hinged support 551 is hinged with a pedal support 41, the pedal support 41 is provided with a pedal plate 4, and the rear end of the pedal support 41 abuts against the front beam 55 for limiting; the front caster 31 is connected to a front fork 56, and the front fork 56 is rotatably engaged with the front arm 54.

The bottom beams 53 of the left and right groups of folding arm assemblies are connected through front rods 531 and rear rods 532 which are distributed front and back; the lower end of the backrest frame 1 is provided with an auxiliary caster 13.

A handrail frame 6 is further arranged between the side beam 52 and the backrest frame 1, one end of the handrail frame 6 is hinged with the middle upper part of the backrest frame 1, a support rod 63 is hinged with the middle part of the handrail frame 6, and the lower end of the support rod 63 is hinged with the middle part of the side beam 52.

The back arm 57 is further provided with a brake block 7, the upper portion of the backrest frame 1 is provided with a wrench 71, and the brake block 7 is in transmission connection with the wrench 71 through a pull rope 72. The brake block 7 of the brake block 7 is used to press the rear caster 32.

The bottom of the armrest frame 6 is provided with a buckle 67 and a hinge joint 62, the rear end of the hinge joint 62 is hinged to the armrest frame 6, the front end of the hinge joint 62 is buckled with the buckle 67 through a lock catch 66, and the armrest frame 6 is hinged to the upper end of the support rod 63 through the hinge joint 62. The buckle 67 is provided with a buckle hole 68, and the buckle 66 is arranged on one side of the hinge head 62 and is inserted into the buckle hole 68; the other side of the hinge 62 is provided with a button 64 for triggering the latch 66, the button 64 is linked with the latch 66 through a screw connection, a second compression spring 65 is further arranged between the button 64 and the hinge 62, the button is in a spring state through the second compression spring 65, and the latch 66 has an acting force inserted into the latch hole 68.

The working principle is as follows: in the state of fig. 1, the flexible member 2 is pulled, and the pin 81 is separated from the insertion hole 521 of the side beam 52 as shown by the arrow T in fig. 8, so as to unlock the folding chair frame, and the seat cushion folding frame 5 can be folded to the state shown in fig. 10.

The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a manual folding wheelchair, includes folding chair frame, back pad (11), cushion (51) and truckle, and the truckle setting is in the bottom of folding chair frame, and folding chair frame is including mutual articulated back frame (1) and cushion folding leg (5), and back pad (11), cushion (51) set up respectively on back frame (1) and cushion folding leg (5), its characterized in that: cushion folding leg (5) are including controlling two sets of folding arm subassemblies, the left and right sides of back frame (1) still respectively through from reset horizontal bolt (8) with control two sets of folding arm subassemblies locking cooperation, two from reset horizontal bolt (8) through flexible piece (2) linkage.

2. The manually collapsible wheelchair as claimed in claim 1, wherein: the left and right groups of folding arm assemblies are respectively arranged outside the left and right sides of the backrest cushion (11), and the two self-resetting cross bolts (8) are respectively arranged on the left and right sides of the backrest cushion (11); or the left and right groups of folding arm components are respectively arranged in the left and right sides of the backrest cushion (11), and the two self-resetting cross bolts (8) are respectively arranged on the left and right groups of folding arm components.

3. The hand-foldable wheelchair as claimed in claim 2, wherein: the self-resetting transverse bolt (8) comprises a pin shaft (81), a shell and a reset spring (83), the shell is sleeved outside the pin shaft (81) and is in axial sliding fit with the pin shaft (81), two ends of the pin shaft (81) extend out of the shell, a limiting protrusion (811) is arranged on the pin shaft (81) corresponding to the inner side of the shell, and the reset spring (83) is arranged in the shell and is abutted against the limiting protrusion (811) and the inner wall of the shell; the shell is arranged on the back cushion (11) or the folding arm component, the folding arm component or the back cushion (11) is provided with an inserting hole (521) corresponding to one end of the pin shaft (81), and the other end of the pin shaft (81) is connected with the flexible part (2).

4. The manually collapsible wheelchair as claimed in claim 3, wherein: the flexible part (2) is a steel wire, and a protective sleeve (21) is arranged outside the steel wire.

5. The hand-foldable wheelchair as claimed in claim 3, wherein: the shell of the self-resetting transverse bolt (8) comprises a sleeve (82) and an end cover (84), one end of the sleeve (82) is opened and is covered by the end cover (84), through holes are formed in the other end of the sleeve (82) and the end cover (84) corresponding to two ends of the pin shaft (81) respectively, and the pin shaft (81) extends out of the through holes; the reset spring (83) is a compression spring which is sleeved outside the pin shaft (81), and two ends of the compression spring are respectively abutted against the limiting protrusion (811) and the inner end surface of the end cover (84); the folding arm assembly is characterized in that a connecting lug (12) is arranged on the backrest cushion (11) or on the folding arm assembly, screw holes penetrating through the left side and the right side of the connecting lug (12) are formed in the connecting lug, an external thread is arranged on the sleeve (82) and connected with the screw holes in a threaded mode, and a locking nut (85) is further arranged outside the sleeve (82).

6. The manually collapsible wheelchair as claimed in claim 1, wherein: the folding arm assembly comprises a side beam (52), a front arm (54), a rear arm (57), a lower connecting rod (58) and a bottom beam (53), the seat cushion (51) is arranged on the side beam (52), and the rear end, the middle part and the front end of the side beam (52) are respectively hinged with the middle part of the backrest frame (1), the upper end of the rear arm (57) and the upper end of the front arm (54); the upper end of the lower connecting rod (58) and the rear end of the bottom beam (53) are hinged with the middle lower part of the backrest frame (1), the lower end of the lower connecting rod (58) is hinged with the middle part of the rear arm (57), and the front end of the bottom beam (53) is hinged with the middle part of the front arm (54); the caster comprises a front caster (31) and a rear caster (32), the front caster (31) is arranged at the lower end of the front arm (54), and the rear caster (32) is arranged at the lower end of the rear arm (57).

7. The manually collapsible wheelchair as claimed in claim 6, wherein: the front arms (54) of the left and right groups of folding arm assemblies are connected through a front beam (55), the rear arms (57) of the left and right groups of folding arm assemblies are connected through a rear beam (571), the middle lower part of the front beam (55) is provided with a hinged support (551), the hinged support (551) is hinged with a pedal support frame (41), the pedal support frame (41) is provided with a pedal (4), and the rear end of the pedal support frame (41) is abutted against the front beam (55) for limiting; the front caster (31) is connected with a front fork (56), and the front fork (56) is rotatably matched with the front arm (54).

8. The manually collapsible wheelchair as claimed in claim 6, wherein: the bottom beams (53) of the left and right groups of folding arm assemblies are connected through front rods (531) and rear rods (532) which are distributed front and back; the lower end of the backrest frame (1) is provided with an auxiliary caster (13); the backrest frame is characterized in that a brake block (7) is further arranged on the rear arm (57), a wrench (71) is arranged on the upper portion of the backrest frame (1), and the brake block (7) is in transmission connection with the wrench (71) through a pull rope (72).

9. The manually collapsible wheelchair as claimed in claim 6, wherein: still be equipped with handrail frame (6) between curb girder (52) with back frame (1), the one end of handrail frame (6) is articulated with the well upper portion of back frame (1), and the middle part of handrail frame (6) is articulated to have vaulting pole (63), and the lower extreme of vaulting pole (63) is articulated with the middle part of curb girder (52).

10. The manually collapsible wheelchair as claimed in claim 9, wherein: handrail frame (6) bottom is equipped with buckle (67) and articulated joint (62), and the rear end of articulated joint (62) is articulated with handrail frame (6), and hasp (66) and buckle (67) lock joint are passed through to the front end of articulated joint (62), handrail frame (6) are articulated through the upper end of articulated joint (62) with vaulting pole (63).