CN210078080U - A wheelchair with reinforced straight leg support - Google Patents

Abstract

The utility model discloses a wheel chair supported by reinforced straight legs, which comprises a chair, a chair frame, a pedal and a bracket, wherein the bracket comprises a fixed frame, a horizontal rod, a vertical rod, a limiting mechanism, an universal mechanism and a supporting plate; a supporting mechanism is arranged in the horizontal rod, the supporting mechanism comprises a folding rod and a supporting rod, the folding rod is connected to the outer end of the horizontal rod in an overturning manner, the supporting rod is sleeved on the folding rod in a sliding manner, and the supporting rod can telescopically slide relative to the folding rod until the supporting rod is abutted against the surface of the pedal; when the horizontal rod is turned outwards to face the front of the wheelchair, the folding rod can be turned to align with the supporting rod and press the surface of the pedal. Can turn over the support and the layer board of rolling over through addding in the chair frame below of wheelchair, will suffer from the limb through the layer board on the support and raise and keep the posture of straight leg, prevent to suffer from limb postoperative edema, reduce the pain that produces when the shank tenesmus, secondly supporting mechanism can effectively improve supporting structure intensity, improves life and comfort level.

Description

A wheelchair with reinforced straight leg support

technical field

The utility model relates to a wheelchair, in particular to a wheelchair supported by reinforced straight legs.

Background technique

Wheelchairs are chairs equipped with wheels. They are important mobile tools for the wounded, sick and disabled at home for rehabilitation, turnaround transportation, medical treatment, and outings. Wheelchairs not only meet the needs of the physically handicapped and people with limited mobility, but more importantly. It is convenient for family members to move and take care of patients.

At present, when an ordinary wheelchair is used by a fracture patient (thigh or calf fracture), if the patient steps on the wheelchair pedal, the calf and thigh are in a natural sagging state, which will bring the following problems:

(1) Due to the sagging of the leg, the pulling force of the fracture is offset, which will aggravate the pain and discomfort of the patient.

(2) The tissue fluid stays in the legs with gravity, and it is easy to accumulate in the legs and cause edema and swelling of the affected limbs.

Utility model content

The purpose of the present utility model is to provide a wheelchair supported by a reinforced straight leg. By adding a foldable bracket and a support plate under the chair frame of the wheelchair, the affected limb is raised through the support plate on the bracket and the straight leg is maintained. posture, prevent postoperative edema of the affected limb, and reduce the pain when the calf falls, and secondly, the support mechanism can effectively improve the structural strength of the stent, improve the service life and comfort.

In order to achieve the above purpose of the invention, the present invention adopts the following technical solutions: a wheelchair supported by reinforced straight legs, including a seat, a seat frame and a pedal, the seat has a seat surface, and the wheelchair also includes one or two brackets , the bracket includes a fixed frame, a horizontal rod, a vertical rod, a limit mechanism, a universal mechanism and a support plate, the fixed frame is fixed with the chair frame, the horizontal rod is horizontally hinged to one end of the fixed frame, and the vertical rod It is vertically hinged on the other end of the horizontal rod, the support plate is fixed on the other end of the vertical rod through a universal mechanism, and the limit mechanism is located between the horizontal rod and the vertical rod; the limit mechanism is used to limit and adjust the relative position of the vertical rod. The angle between the horizontal rods; the universal mechanism is used to adjust the orientation angle of the pallet;

The horizontal rod is provided with a supporting mechanism, the supporting mechanism includes a folding rod and a supporting rod, the folding rod is flipped and connected to the outer end of the horizontal rod facing the support plate, the supporting rod is slidably sleeved on the folding rod, and the supporting rod is opposite to the supporting rod. The folding rod can be telescopically slid to abut against the pedal surface;

When the horizontal bar is folded outward to face the front of the wheelchair, the folding bar can be folded so that the support bar is aligned and pressed against the pedal surface.

Preferably, the middle part of the horizontal rod is provided with a slot for receiving the support mechanism.

Preferably, the folding rod is a rod-shaped structure with a hollow inside, the folding rod is sleeved on the outer surface of the supporting rod, and a clamping structure is left between the folding rod and the supporting rod, and the clamping structure includes an upper clamping hole and a lower clamping structure. The clamping hole, the upper clamping hole is located at the inner end of the folding rod, the lower clamping hole is located at the outer end of the folding rod, and the support rod is provided with a telescopic block for clamping the upper clamping hole and the lower clamping hole;

When the telescopic block is snapped into the upper snap hole, the support rod is retracted into the inside of the folding rod, and the entire support mechanism can be folded into the embedded groove of the horizontal rod;

When the telescopic block is clamped into the lower clamping hole, the support rod extends out of the folding rod to the maximum distance, and the bottom of the support rod can contact the upper surface of the pedal.

Preferably, a foot pad is arranged at the bottom of the support rod, a connecting rod and an elastic piece for continuously pushing the foot pad downward are arranged behind the foot pad, the connecting rod connects the foot pad and the elastic piece, and the elastic piece Inside the support rod.

Preferably, the pedal is provided with a stepping groove for placing the support rod/foot pad in a position, and the stepping groove is located on the upper surface of the pedal.

Preferably, the universal mechanism includes a universal ball, a ball sleeve and a first locking structure for fixing the universal ball, the universal ball is located inside the ball sleeve, the ball sleeve is located at the outer end of the vertical rod, the ball The top of the sleeve is open, the support plate is fixed on the universal ball, and the support plate is located above the opening of the ball sleeve.

Preferably, a rod-shaped connecting rod is also connected between the universal ball and the support plate, and the side wall of the ball sleeve is provided with a notch for the connecting rod to be turned over in a vertical plane, and the notch communicates with the opening.

Preferably, the first locking structure includes a limiting convex ring, a top block and a first locking bolt, the limiting convex ring is located on the inner wall of the opening of the ball sleeve, and the universal ball is located on the top block and the limiting convex ring In between, the inner diameter of the limiting convex ring is smaller than the outer diameter of the universal ball, the ball sleeve is provided with a first threaded hole corresponding to the first locking bolt, and the top block is provided with a first locking bolt to be screwed in. The top block presses the universal ball against the inclined surface of the limiting convex ring.

Preferably, the ball sleeve is sleeved on the side wall of the top block, the top block is fixed on the outer end of the vertical rod, and the ball sleeve can rotate circumferentially relative to the top block/vertical rod.

Preferably, the limiting mechanism includes a hinge plate, a plug plate and a second locking structure, a slot is provided in the middle of the hinge plate, the plug plate is inserted into the slot in the middle of the hinge plate, and the hinge plate and The plug plate is hinged through a pivot; the second locking structure includes a second threaded hole and a second locking bolt; the second threaded hole is opened on the outer wall of the hinge plate, and the second locking bolt passes through the second threaded hole Squeeze the plug-in board.

Compared with the prior art, the wheelchair supported by the reinforced straight legs using the above technical solution has the following beneficial effects:

1. Adopting the wheelchair supported by the reinforced straight legs of the present invention, by adding a fixing frame, a horizontal rod and a vertical rod under the seat frame of the wheelchair, the escort can fold the frame from the bottom of the seat frame for use, and the support The plank raises the leg and maintains a straight-leg position to prevent postoperative edema of the affected limb and reduce pain when the lower leg falls.

2. Adjust the height of the pallet through the limit mechanism, and then adjust the angle of the pallet through the universal mechanism to meet the needs of patients with different heights and leg lengths.

3. Since the bracket can be folded and moved under the chair frame, when the bracket is folded and entered under the chair frame, it can also be used for other patients with inconvenience for normal use.

4. The bottom of the supporting mechanism supports the front end position of the entire horizontal rod through the folding rod and the supporting rod, supports and lifts the bottom position of the supporting plate, and disperses the gravity of the legs above the supporting plate to the pedal through the supporting mechanism, effectively Improve the structural strength of the bracket and prevent the bracket from breaking.

Description of drawings

FIG. 1 is a schematic structural diagram (deployed state) of an embodiment of a wheelchair supported by a reinforced straight leg of the present invention.

FIG. 2 is a schematic structural diagram (folded state) of the wheelchair in the embodiment.

Figure 3 is a side view of the wheelchair in the embodiment.

FIG. 4 is a schematic diagram of the structure of the stent in the embodiment.

FIG. 5 is an exploded schematic diagram of the stent in the embodiment.

FIG. 6 is a partial enlarged view of A in FIG. 5 .

FIG. 7 is a partial enlarged view of B in FIG. 3 .

FIG. 8 is a cross-sectional view of the gimbal mechanism in the embodiment.

FIG. 9 is a schematic structural diagram of the universal mechanism in the embodiment.

FIG. 10 is a schematic structural diagram of the horizontal rod and the support mechanism in the embodiment (abducted state).

FIG. 11 is a schematic diagram of the use of the inner support mechanism of the horizontal rod in the embodiment (during the folding process).

FIG. 12 is a schematic diagram of the use of the inner support mechanism of the horizontal rod in the embodiment (in a folded state).

FIG. 13 is a schematic structural diagram of the support mechanism in the embodiment.

14 is a cross-sectional view of the support mechanism in the embodiment.

FIG. 15 is a schematic diagram of the cooperation between the tread groove and the foot pad in the embodiment.

FIG. 16 is a schematic structural diagram of the pedal in the embodiment.

Reference numerals: 1, fixing frame; 21, horizontal rod; 210, insert groove; 211, butt joint; 22, vertical rod; 3, universal mechanism; 30, ball sleeve; 300, limit convex ring; notch; 31, universal ball; 310, connecting rod; 32, first locking bolt; 33, top block; 4, limit mechanism; 40, hinge plate; 400, slot; 401, second threaded hole; 41. Plug-in board; 42. Second locking bolt; 5. Support plate; 6. Folding rod; 60. The first wire slot; 61. Upper clamping hole; The second wire slot; 71, the telescopic block; 8, the foot pad; 80, the connecting rod; 81, the elastic piece; 9, the pedal; 90, the tread groove.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

The wheelchair supported by reinforced straight legs as shown in Figures 1 to 16 includes a seat, a seat frame and a foldable movable bracket. The seat has a seat surface, the bracket is located under the seat surface, and the bracket can be folded and unfolded outwards. (as shown in Figure 1 and Figure 3), the upper support plate 5 can be supported for unilateral leg lift and support of the patient, so as to maintain a straight leg state, avoid the pain caused by falling, and effectively relieve the pain The condition of edema of the affected limb. When it does not need to be used, such as when the patient has difficulty moving after recovery, the bracket can be folded to the folded state shown in Figure 2, and the bracket can be folded under the chair surface, and the patient can sit on the wheelchair normally without raising it. legs.

The wheelchair in this embodiment includes a total of two brackets. The bracket can support the patient's left leg or right leg, or support both legs at the same time. The wheelchair can also be provided with a bracket on a single side, and only support one side. Limb support.

As shown in Figure 4 and Figure 5, the bracket includes a fixed frame 1, a horizontal rod 21, a vertical rod 22, a limit mechanism 4, a universal mechanism 3 and a support plate 5, wherein the functions of each component are as follows:

①The fixing frame 1 is fixed with the chair frame, which mainly plays the role of overall support and fixation.

②The horizontal rod 21 is horizontally hinged to one end of the fixed frame 1, and is mainly responsible for the overall horizontal folding and movement of the bracket. The horizontal movement of the horizontal rod 21 is required for both expansion and contraction.

③ The vertical rod 22 is vertically hinged to the other end of the horizontal rod 21 , and the height and front and rear position of the support plate 5 can be adjusted by cooperating with the limiting mechanism 4 .

④ The limit mechanism 4 is used to limit and adjust the angle between the vertical rod 22 and the horizontal rod 21, and to complete the adjustment and fixation of the vertical rod 22 and the horizontal rod 21 by restricting the movement of the vertical rod 22 and the horizontal rod 21.

⑤ The limit mechanism 4 is located between the horizontal rod 21 and the vertical rod 22; the universal mechanism 3 is used to adjust the orientation angle of the support plate 5, which is the final adjustment to the support plate 5, so that it can adapt to the patient and enable the patient to find it. The most comfortable elevated position for the affected limb.

⑥ The support plate 5 is fixed on the other end of the vertical rod 22 through the universal mechanism 3, and mainly uses the plate-like surface to carry the affected limb, and lift the affected limb to the recovery position. The support plate 5 is an arc-shaped plate with a downward depression in the middle. When the affected limb is raised, it naturally falls into the middle of the support plate 5 and is not easy to fall off from the edge.

As shown in FIGS. 5 and 6 , the limiting mechanism 4 includes a hinged plate 40 , a plug-in plate 41 and a second locking structure. A slot 400 is provided in the middle of the hinged plate 40 , and the plug-in plate 41 is inserted into the middle of the hinged plate 40 . In the slot 400, the hinge plate 40 and the plug plate 41 are hinged through a pivot; the second locking structure includes a second threaded hole 401 and a second locking bolt 42; the second threaded hole 401 is opened on the outer wall of the hinge plate 40, The two locking bolts 42 pass through the second threaded hole 401 to press the plug-in board 41 . By tightening the second locking bolt 42, the second locking bolt 42 is pressed into the surface of the plug-in board 41, and the plug-in board 41 is clamped in a manner of increasing the friction between the two, so that the vertical rod 22 and the horizontal rod 21 are clamped. The activities between the rooms are restricted by the restriction agencies.

As shown in FIGS. 8 and 9 , the universal mechanism 3 includes a universal ball 31 , a ball sleeve 30 and a first locking structure for fixing the universal ball 31 . The universal ball 31 is located inside the ball sleeve 30 , and the ball sleeve 30 Located at the outer end of the vertical rod 22 , the top of the ball sleeve 30 is open, the support plate 5 is fixed on the universal ball 31 , and the support plate 5 is located above the opening of the ball sleeve 30 . The universal mechanism can make the entire support plate 5 produce a conical adjustment angle at the opening of the ball sleeve 30, and the user can arbitrarily adjust the angle of the support plate 5 within this range, so that the orientation angle of the support plate 5 can achieve the most choices. Subsequently, the universal ball 31 is fixed by the first locking structure so that it cannot rotate, and the angle adjustment of the support plate 5 is completed.

As shown in FIG. 8 , the first locking structure includes a limiting convex ring 300 , a top block 33 and a first locking bolt 32 , the limiting convex ring 300 is located on the inner wall of the opening of the ball sleeve 30 , and the universal ball 31 is located on the top block 33 and the limiting convex ring 300, the inner diameter of the limiting convex ring 300 is smaller than the outer diameter of the universal ball 31, the ball sleeve 30 is provided with a first threaded hole corresponding to the first locking bolt 32, and the top block 33 is provided with a follower. The first locking bolt 32 is screwed in so that the top block 33 presses the universal ball 31 against the inclined surface of the limiting convex ring 300 . By screwing in the first locking bolt 32, the conical surface is tightened, so that the top block presses the 330 universal ball against the limiting convex ring 330, so as to realize the fixing of the universal ball 31, and the contact points during locking are more, and the fixed It is stable and reliable, and the universal ball 31 is not easily deflected when the support plate 5 is pressed.

As shown in FIG. 9 , a rod-shaped connecting rod 310 is also connected between the universal ball 31 and the support plate 5 , and the side wall of the ball sleeve 30 is provided with a notch 301 for the connecting rod 310 to be turned over in a vertical plane. open connection. The purpose of opening the slot 301 is to make the universal ball 31 turn downward at a certain angle to the position where the slot 301 is located, so as to obtain a larger adjustment range in the vertical plane.

The ball sleeve 30 is sleeved on the side wall of the top block 33, the top block 33 is fixed on the outer end of the vertical rod 22, the ball sleeve 30 can rotate relative to the top block 33/vertical rod 22 in the circumferential direction, and the conical surface is a conical inclined surface , the top block 33 can be rotated horizontally by 360° and the first locking bolt 32 can still be aligned with the conical surface, that is, the ball sleeve can be rotated 360° in the horizontal plane to adjust the angle of the slot 301 and the support plate 5 .

As shown in FIGS. 10 to 12 , the horizontal rod 21 is provided with a support mechanism. The support mechanism includes a folding rod 6 and a supporting rod 7 . The folding rod 6 is flipped and connected to the outer end of the horizontal rod 21 toward the support plate 5 , and the supporting rod 7 slides. Sleeved on the folding rod 6 , the support rod 7 can be telescopically slid relative to the folding rod 6 to abut against the surface of the pedal 9 .

As shown in FIG. 13 , the folding rod 6 is a rod-shaped structure with a hollow interior. The folding rod 6 is sleeved on the outer surface of the supporting rod 7, and a clamping structure is left between the folding rod 6 and the supporting rod 7. The clamping structure includes the upper The clamping hole 61 and the lower clamping hole 62, the upper clamping hole 61 is located at the inner end of the folding rod 6, the lower clamping hole 62 is located at the outer end of the folding rod 6, and the support rod 7 is provided with the same upper clamping hole 61 and lower clamping hole 62. The telescopic block 71, the telescopic block 71 adopts the jumping bean spring (as shown in the upper part of Fig. 14), and the expansion and contraction of the telescopic block 71 can be controlled by pressing the telescopic block 71.

As shown in FIG. 13 , the surface of the folding rod 6 is provided with a first wire groove 60 , and the surface of the support rod 7 is provided with a second wire groove 70 . 7. Keep the vertical reciprocating sliding to prevent the relative rotation of the two, so as to ensure that the telescopic block 71 can be aligned with the upper clamping hole 61 and the lower clamping hole 62.

When the telescopic block 71 is snapped into the upper snap hole 61, the support rod 7 is retracted into the inside of the folding rod 6, the entire support mechanism has the shortest length, and can be folded into the embedding groove 210 of the horizontal rod 21; when the telescopic block 71 is snapped into the When the clamping hole 62 is lowered, the support rod 7 extends out of the folding rod 6 to the maximum distance, the length of the entire support mechanism is the longest, and the bottom of the support rod 7 can contact the upper surface of the pedal 9 .

As shown in FIG. 12 , the middle of the horizontal rod 21 is provided with an embedding groove 210 for receiving the support mechanism. When the support rod 7 is retracted into the folding rod 6 , the entire supporting mechanism can be embedded in the embedding groove 210 by folding the folding rod 7 . inside, so that when the support mechanism is not in use, the space occupancy rate can be reduced as much as possible, making the whole support smaller.

As shown in FIG. 7 , when the folding rod 6 is in the abducted state (the folding rod 6 is opened to the outside to the maximum angle), the angle formed between the folding rod 6 and the horizontal rod 21 is an obtuse angle, and the horizontal rod 21 is inserted into the groove 210 The side facing the pallet 5 is provided with a docking portion 211. The docking portion 211 is an arc-shaped plate. When the patient places the affected limb on the pallet 5, the force application point is located at the outer end of the horizontal rod 21 (limiting mechanism 4-1). side), the horizontal rod 21 is pressed down so that the butting portion 211 is in contact with the side of the folding rod 6. Since the butting portion 211 is an arc-shaped plate, the contact area between the butting portion 211 and the folding rod 6 is larger and the force is more uniform, avoiding folding. The rod 6 is deformed at the contact point, so even if the pallet 5 is impacted downward, the support mechanism is not easily bent or broken.

As shown in FIG. 14 , a foot pad 8 is arranged at the bottom of the support rod 7 , a connecting rod 80 and an elastic member 81 for continuously pushing the foot pad 8 downward are arranged behind the foot pad 8 , and the connecting rod 80 connects the foot pad 8 and the The elastic piece 81 is located inside the support rod 7 . The connecting rod 80 is pushed out through the elastic member 81, wherein the elastic member 81 adopts a cylindrical spring. The foot pad 8 is continuously elastically supported by the spring. When the patient places the affected limb on the support plate 5, the elastic member 81 can provide a certain elastic lifting force of the support plate 5. When the family members push the wheelchair, even in the wheelchair Vibration occurs when traveling, and the vibration amplitude can also be reduced by the spring to reduce the impact; secondly, the elastic member 81 makes the foot pad 8 in a pop-up state. Hold up to keep the folding rod 6 and the support rod 7 fixed in the insert groove 210 .

As shown in FIG. 15 and FIG. 16 , the pedal 9 is provided with a stepping groove 90 for the support rod 7 and the foot pad 8 to be placed in position. The stepping groove 90 is located on the upper surface of the pedal 9 , and the foot pad 8 is carried Limit, strengthen the fixation of the pedal 9 to the support rod 7 (that is, the foot pad 8), even if the wheelchair bumps against pavement stones or other obstacles and generates an impact force, the support rod 7 is still in the tread groove 90, to avoid foot The pad 8 slips off the pedal 9 in a fixed position with the vibration, so as to ensure that the support mechanism can continuously support the pallet 5 and prevent the bracket from being damaged and the affected limb from falling due to the slipping of the support rod 7 .

When the bracket needs to be folded out for use, the steps are as follows:

①Fold the horizontal rod 21 forward.

② The foot pad 8 compresses the elastic member 81 inward, takes the folding rod 6 and the support rod 7 out of the embedding groove 210 of the horizontal rod 21, and presses the telescopic block 71 inward, so that the telescopic block 71 is released from the upper clamping hole 61. , pull the support rod 7 outward to make the length of the support mechanism stretched to the longest, at this time, the telescopic block 71 pops up into the lower clamping hole 62 to complete the pull and fixation of the support rod 7 outward.

③ Fold the support mechanism outward until the folding rod 6 abuts on the docking portion 211 (the abduction step is shown in FIG. 12 to FIG. 10 ), and place the foot pad 8 aligned with the step groove 90 .

④ Unscrew the second locking bolt 42 to unlock the limiting mechanism 4, and adjust the height of the pallet 5 by adjusting the angle of the vertical rod 22. After adjusting to an appropriate height, re-tighten the second locking bolt 42 to remove The limit mechanism 4 is locked.

⑤ Loosen the first locking bolt 32, rotate the ball sleeve 30, and adjust the orientation of the support plate 5.

⑥ At the same time, the universal ball 31 in the universal mechanism 3 can move freely, and the connecting rod 310 can be adjusted at a larger angle in the slot 301. After the adjustment, the first locking bolt 32 is retracted, and the support plate 5 is adjusted. At this time, the patient/accompanying person presses down the support plate 5 by hand to test its strength, and the supporting force is sufficient to allow the patient to place the affected limb on the support plate 5 .

The above are the preferred embodiments of the present invention. For those of ordinary skill in the art, some modifications and improvements can be made without departing from the principles of the present invention. These should also be regarded as the protection of the present invention. scope.

Claims (10)

1. A reinforced straight leg supported wheelchair comprising a seat, a frame and a footboard (9), said seat having a seating surface, characterized in that: the chair is characterized by further comprising 1 or 2 supports, each support comprises a fixing frame (1), a horizontal rod (21), a vertical rod (22), a limiting mechanism (4), a universal mechanism (3) and a supporting plate (5), the fixing frame (1) is fixed with the chair frame, the horizontal rod (21) is horizontally hinged to one end of the fixing frame (1), the vertical rod (22) is vertically hinged to the other end of the horizontal rod (21), the supporting plate (5) is fixed to the other end of the vertical rod (22) through the universal mechanism (3), and the limiting mechanism (4) is located between the horizontal rod (21) and the vertical rod (22); the limiting mechanism (4) is used for limiting and adjusting the included angle between the vertical rod (22) and the horizontal rod (21); the universal mechanism (3) is used for adjusting the orientation angle of the supporting plate (5);

a supporting mechanism is arranged in the horizontal rod (21), the supporting mechanism comprises a folding rod (6) and a supporting rod (7), the folding rod (6) is connected to the outer end, facing the supporting plate (5), of the horizontal rod (21) in an overturning manner, the supporting rod (7) is sleeved on the folding rod (6) in a sliding manner, and the supporting rod (7) can stretch and slide relative to the folding rod (6) to abut against the surface of the pedal (9);

when the horizontal rod (21) is turned outwards to face the front of the wheelchair, the folding rod (6) can be turned over until the support rod (7) is aligned with and pressed against the surface of the pedal (9).

2. The reinforced straight leg supported wheelchair as claimed in claim 1, wherein: and an embedded groove (210) for accommodating the supporting mechanism is formed in the middle of the horizontal rod (21).

3. The reinforced straight leg supported wheelchair as claimed in claim 2, wherein: the folding rod (6) is of a rod-shaped structure with a hollow inner part, the folding rod (6) is sleeved on the outer surface of the supporting rod (7), a clamping structure is reserved between the folding rod (6) and the supporting rod (7), the clamping structure comprises an upper clamping hole (61) and a lower clamping hole (62), the upper clamping hole (61) is located at the inner end of the folding rod (6), the lower clamping hole (62) is located at the outer end of the folding rod (6), and the supporting rod (7) is provided with a telescopic block (71) which is used for being clamped with the upper clamping hole (61) and the lower clamping hole (62);

when the telescopic block (71) is clamped into the upper clamping hole (61), the supporting rod (7) is retracted into the folding rod (6), and the whole supporting mechanism can be folded into the caulking groove (210) of the horizontal rod (21);

when the telescopic block (71) is clamped into the lower clamping hole (62), the supporting rod (7) extends out of the folding rod (6) to the maximum distance, and the bottom of the supporting rod (7) can contact the upper surface of the pedal (9).

4. The reinforced straight leg supported wheelchair as claimed in claim 1, wherein: bracing piece (7) bottom is equipped with callus on the sole (8), callus on the sole (8) rear is equipped with connecting rod (80) and is used for lasting elastic component (81) ejecting downwards with callus on the sole (8), callus on the sole (8) and elastic component (81) are connected in connecting rod (80), and elastic component (81) are located inside bracing piece (7).

5. The reinforced straight leg supported wheelchair as claimed in claim 1 or 4, wherein: the pedal (9) is provided with a pedal groove (90) for placing the support rod (7)/the foot pad (8) for limiting, and the pedal groove (90) is positioned on the upper surface of the pedal (9).

6. The reinforced straight leg supported wheelchair as claimed in claim 1, wherein: universal mechanism (3) are including universal ball (31), ball cover (30) and be used for the fixed first locking structure of universal ball (31), inside universal ball (31) were located ball cover (30), and ball cover (30) are located the outer end of vertical pole (22), and ball cover (30) open-top, on layer board (5) were fixed in universal ball (31), layer board (5) were located ball cover (30) opening top.

7. The reinforced straight leg supported wheelchair of claim 6, wherein: a rod-shaped connecting rod (310) is further connected between the universal ball (31) and the supporting plate (5), a notch (301) for enabling the connecting rod (310) to turn in a vertical plane is formed in the side wall of the ball sleeve (30), and the notch (301) is communicated with the opening.

8. The reinforced straight leg supported wheelchair of claim 6, wherein: the first locking structure comprises a limiting convex ring (300), a top block (33) and a first locking bolt (32), the limiting convex ring (300) is located on the inner wall of an opening of a ball sleeve (30), a universal ball (31) is located between the top block (33) and the limiting convex ring (300), the inner diameter of the limiting convex ring (300) is smaller than the outer diameter of the universal ball (31), a first threaded hole corresponding to the first locking bolt (32) is formed in the ball sleeve (30), and the top block (33) is provided with an inclined surface which is screwed in along with the first locking bolt (32) to enable the top block (33) to tightly press the universal ball (31) on the limiting convex ring (300).

9. The reinforced straight leg supported wheelchair of claim 8, wherein: the ball sleeve (30) is sleeved on the side wall of the ejector block (33), the ejector block (33) is fixed at the outer end of the vertical rod (22), and the ball sleeve (30) can rotate circumferentially relative to the ejector block (33)/the vertical rod (22).

10. The reinforced straight leg supported wheelchair as claimed in claim 1, wherein: the limiting mechanism (4) comprises a hinged disc (40), an inserting plate (41) and a second locking structure, wherein a slot (400) is formed in the middle of the hinged disc (40), the inserting plate (41) is inserted into the slot (400) in the middle of the hinged disc (40), and the hinged disc (40) is hinged to the inserting plate (41) through a pivot; the second locking structure comprises a second threaded hole (401) and a second locking bolt (42); the second threaded hole (401) is formed in the outer wall of the hinged disc (40), and the second locking bolt (42) penetrates through the second threaded hole (401) to press the plug board (41).

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