CN210078080U - Wheelchair supported by reinforced straight legs - 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

Wheelchair supported by reinforced straight legs

Technical Field

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

Background

The wheelchair is a chair provided with wheels, is an important moving tool for the rehabilitation, turnover transportation, treatment and outgoing activities of wounded, patients and disabled people at home, not only meets the requirements of physically disabled people and mobility-handicapped people for riding instead of walking, but also is more important to facilitate the movement of family members and the care of patients.

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

(1) due to the drooping legs, the pulling force at the fracture is offset, which can exacerbate the patient's pain and discomfort.

(2) The tissue fluid stays in the leg along with the gravity and is easy to accumulate on the leg to cause edema and swelling of the affected limb.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a consolidate wheelchair that straight leg supported through addding the support and the layer board that can turn over the book 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, the pain that produces when reducing the shank tenesmus, secondly supporting mechanism can effectively improve supporting structure intensity, improves life and comfort level.

In order to achieve the purpose of the invention, the utility model adopts the following technical scheme: a wheelchair supported by reinforced straight legs comprises a seat, a seat frame and a pedal, wherein the seat is provided with a seat surface, the wheelchair further comprises 1 or 2 supports, each support comprises a fixing frame, a horizontal rod, a vertical rod, a limiting mechanism, a universal mechanism and a supporting plate, the fixing frame is fixed with the seat frame, the horizontal rod is horizontally hinged to one end of the fixing frame, the vertical rod is vertically hinged to the other end of the horizontal rod, the supporting plate is fixed to the other end of the vertical rod through the universal mechanism, and the limiting mechanism is located between the horizontal rod and the vertical rod; the limiting mechanism is used for limiting and adjusting the included angle between the vertical rod and the horizontal rod; the universal mechanism is used for adjusting the orientation angle of the supporting plate;

the supporting mechanism is arranged in the horizontal rod and comprises a folding rod and a supporting rod, the folding rod is connected to the outer end, facing the supporting plate, 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 to abut against the surface of the pedal;

when the horizontal rods are turned outwards to face the front of the wheelchair, the folding rods can be turned to align the supporting rods and press against the surface of the pedal.

Preferably, the middle part of the horizontal rod is provided with an embedded groove for accommodating the supporting mechanism.

Preferably, the folding rod is of a rod-shaped structure with a hollow inner part, the folding rod is sleeved on the outer surface of the support rod, a clamping structure is reserved between the folding rod and the support rod, the clamping structure comprises an upper clamping hole and a lower clamping hole, the upper clamping hole is positioned at the inner end of the folding rod, the lower clamping hole is positioned at the outer end of the folding rod, and the support rod is provided with a telescopic block which is used for being clamped with the upper clamping hole and the lower clamping hole;

when the telescopic block is clamped into the upper clamping hole, the support rod is retracted into the folding rod, and the whole support mechanism can be folded into the embedding groove of the horizontal rod;

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

Preferably, the bottom of the supporting rod is provided with a foot pad, a connecting rod and an elastic piece used for continuously ejecting the foot pad downwards are arranged behind the foot pad, the connecting rod is connected with the foot pad and the elastic piece, and the elastic piece is located inside the supporting rod.

Preferably, the pedal is provided with a pedal groove for limiting the position of the support rod/foot pad, and the pedal groove is positioned on the upper surface of the pedal.

Preferably, universal mechanism includes universal ball, ball cover and is used for the fixed first locking structure of universal ball, universal ball is located inside the ball cover, and the ball cover is located the outer end of vertical pole, and ball cover open-top, the layer board is fixed in on the universal ball, and the layer board is located ball cover open-top.

Preferably, a rod-shaped connecting rod is further connected between the universal ball and the supporting plate, a notch for enabling the connecting rod to turn in a vertical plane is formed in the side wall of the ball sleeve, and the notch is communicated with the opening.

Preferably, the first locking structure comprises 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, the universal ball is located between the top block and the limiting convex ring, 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 an inclined plane which enables the top block to tightly press the universal ball on the limiting convex ring along with the screwing of the first locking bolt.

Preferably, the ball sleeve is sleeved on the side wall of the ejector block, the ejector block is fixed at the outer end of the vertical rod, and the ball sleeve can rotate relative to the ejector block/the vertical rod in the circumferential direction.

Preferably, the limiting mechanism comprises a hinged disc, an inserting plate and a second locking structure, wherein a slot is formed in the middle of the hinged disc, the inserting plate is inserted into the slot in the middle of the hinged disc, and the hinged disc is hinged to the inserting plate through a pivot; the second locking structure comprises a second threaded hole and a second locking bolt; the second screw hole is opened in the articulated dish outer wall, and second locking bolt passes second screw hole and compresses tightly the plugboard.

Compared with the prior art, the wheelchair supported by the reinforced straight legs has the following beneficial effects that:

one, adopt the utility model discloses a wheelchair that reinforcement straight leg supported through addding mount, horizon bar and vertical pole in the chair frame below of wheelchair, and the attendant can be folded out the support from chair frame below and use, raises the shank and keeps the posture of straight leg through last layer board, prevents to suffer from limb postoperative edema, reduces the pain that produces when the shank tenesmus.

Secondly, adjust the height of layer board through stop gear, the angle of rethread universal mechanism adjustment layer board to satisfy different height leg length patients' demand.

Thirdly, because the support can be turned over below the chair frame to move, when the support is folded and enters the lower part of the chair frame, the support can also be used for other patients with inconvenient actions to normally use.

Fourthly, the bottom of the supporting mechanism supports the front end of the whole horizontal rod through the folding rod and the supporting rod, the bottom of the supporting plate is supported and lifted, the gravity of the legs spread above the supporting plate is dispersed to the pedal through the supporting mechanism, the structural strength of the support is effectively improved, and the support is prevented from being broken.

Drawings

Fig. 1 is a schematic structural view (unfolded state) of an embodiment of the reinforced wheelchair supported by straight legs.

Fig. 2 is a schematic structural view (folded state) of the wheelchair according to the embodiment.

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

FIG. 4 is a schematic structural view of the stent in the example.

Fig. 5 is an exploded view of the bracket in the example.

Fig. 6 is a partially enlarged view of a portion a in fig. 5.

Fig. 7 is a partially enlarged view of fig. 3 at B.

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

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

Fig. 10 is a schematic structural view (extended state) of the horizontal bar and the support mechanism in the embodiment.

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

Fig. 12 is a schematic view showing the use of the support mechanism in the horizontal bar in the embodiment (collapsed state).

Fig. 13 is a schematic structural view of the support mechanism in the embodiment.

Fig. 14 is a sectional view of the supporting mechanism in the embodiment.

FIG. 15 is a schematic view of the engagement of the foot rest and the foot well in the embodiment.

FIG. 16 is a schematic structural view of a step plate in the embodiment.

Reference numerals: 1. a fixed mount; 21. a horizontal bar; 210. caulking grooves; 211. a docking portion; 22. a vertical rod; 3. a universal mechanism; 30. a ball sleeve; 300. a limit convex ring; 301. a notch; 31. a universal ball; 310. a connecting rod; 32. a first locking bolt; 33. a top block; 4. a limiting mechanism; 40. a hinged disk; 400. a slot; 401. a second threaded hole; 41. a plugboard; 42. a second locking bolt; 5. a support plate; 6. folding the rod; 60. a first wire slot; 61. an upper clamping hole; 62. a lower clamping hole; 7. a support bar; 70. a second wire slot; 71. a telescopic block; 8. a foot pad; 80. a connecting rod; 81. an elastic member; 9. a pedal; 90. a pedal groove.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The wheelchair supported by the reinforced straight legs as shown in fig. 1 to 16 comprises a seat, a seat frame and a foldable and movable bracket, wherein the seat is provided with a seat surface, the bracket is positioned below the seat surface, the bracket can be folded, when the bracket is unfolded outwards (as shown in fig. 1 and 3), the bracket 5 above can be supported, and the single-side leg of a patient can be lifted and supported to keep the straight leg state, so that the pain caused by falling is avoided, and the edema condition of the affected limb is effectively relieved. When the wheelchair is not needed to be used, if the patient is inconvenient to move after recovery, the support can be folded to the folded state shown in the figure 2, the support is folded under the chair surface, and the patient can normally sit on the wheelchair without lifting the legs.

The wheelchair in this embodiment contains two supports altogether, and the support can support patient's left leg or right leg, also can support both legs simultaneously, and the wheelchair also can be that one side alone is equipped with the support, only supports unilateral affected limb.

As shown in fig. 4 and 5, the support comprises a fixed frame 1, a horizontal rod 21, a vertical rod 22, a limiting mechanism 4, a universal mechanism 3 and a supporting plate 5, wherein the functions of the components are as follows:

① the fixed mount 1 is fixed with the chair frame, mainly plays the role of integral support and fixation.

② the horizontal bar 21 is hinged on one end of the fixed mount 1, mainly responsible for the whole horizontal turning movement of the bracket, and the expansion and contraction need the horizontal movement of the horizontal bar 21 to realize.

③ the vertical rod 22 is hinged on the other end of the horizontal rod 21, and the height and the front and back position of the supporting plate 5 can be adjusted by matching with the limit mechanism 4.

④ the limiting mechanism 4 is used to limit and adjust the angle between the vertical rod 22 and the horizontal rod 21, and the vertical rod 22 and the horizontal rod 21 are regulated and fixed by limiting their movement.

⑤ the position-limiting mechanism 4 is located between the horizontal rod 21 and the vertical rod 22, the universal mechanism 3 is used for adjusting the orientation angle of the supporting plate 5, which is the final adjustment of the supporting plate 5, so that the supporting plate can adapt to the patient and the patient can find the most comfortable elevation posture of the affected limb.

⑥ the supporting plate 5 is fixed on the other end of the vertical rod 22 through the universal mechanism 3, mainly uses the plate surface to bear the affected limb, and raises the affected limb to the rehabilitation position, the supporting plate 5 is an arc plate with the middle part depressed downwards, when the affected limb is raised, the affected limb naturally falls into the middle part of the supporting plate 5, and is not easy to fall off from the edge.

As shown in fig. 5 and 6, the limiting mechanism 4 includes a hinge plate 40, a plug board 41 and a second locking structure, a slot 400 is formed in the middle of the hinge plate 40, the plug board 41 is inserted into the slot 400 in the middle of the hinge plate 40, and the hinge plate 40 and the plug board 41 are hinged through a pivot; the second locking structure comprises a second threaded hole 401 and a second locking bolt 42; the second screw hole 401 is opened on the outer wall of the hinge plate 40, and the second locking bolt 42 passes through the second screw hole 401 to press the inserting plate 41. The second locking bolt 42 is pressed into the surface of the plugboard 41 by screwing the second locking bolt 42, and the plugboard 41 is clamped by improving the friction between the second locking bolt 42 and the plugboard 41, so that the movement between the vertical rod 22 and the horizontal rod 21 is limited by the limiting mechanism.

As shown in fig. 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, the ball sleeve 30 is located at the outer end of the vertical rod 22, the top of the ball sleeve 30 is open, the supporting plate 5 is fixed on the universal ball 31, and the supporting plate 5 is located above the opening of the ball sleeve 30. Universal mechanism can make whole layer board 5 produce conical angle of regulation at the 30 openings of ball cover, and the user can adjust the angle of layer board 5 wantonly in this within range to make layer board 5 the orientation angle can reach the most selection, follow-up fixes universal ball 31 through first locking structure, makes it unable rotation, accomplishes the regulation of layer board 5 angle.

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, the 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, 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 an inclined surface which enables the top block 33 to compress the universal ball 31 on the limiting convex ring 300 along with the screwing of the first locking bolt 32. Screw in through first locking bolt 32 and push up the conical surface tightly, make the kicking block compress tightly 33 universal ball in spacing bulge loop 330, realize universal ball 31 fixed, the contact point during locking is more, and is fixed reliable and stable, and universal ball 31 is difficult for taking place to deflect along with layer board 5 pressurized.

As shown in fig. 9, a rod-shaped connecting rod 310 is further connected between the universal ball 31 and the supporting plate 5, a notch 301 for allowing 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. The purpose of the notch 301 is to make the universal ball 31 turn downward at a certain angle to the position of the notch 301, so as to obtain a larger adjusting range in the vertical plane.

Wherein, ball cover 30 cup joints in kicking block 33 lateral wall, and kicking block 33 is fixed in the outer end of vertical pole 22, and ball cover 30 can be relative kicking block 33/vertical pole 22 circumference rotation, and the conical surface is the toper inclined plane, and kicking block 33 horizontal rotation 360 first locking bolt 32 still can aim at the conical surface, and the ball cover can 360 rotations in the horizontal plane promptly to adjust the angle of notch 301 and layer board 5.

As shown in fig. 10 to 12, a supporting mechanism is disposed in the horizontal rod 21, the supporting mechanism includes a folding rod 6 and a supporting rod 7, the folding rod 6 is connected to the outer end of the horizontal rod 21 facing the supporting plate 5 in an overturning manner, the supporting rod 7 is slidably sleeved on the folding rod 6, and the supporting rod 7 can telescopically slide 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 support rod 7, a clamping structure is reserved between the folding rod 6 and the support 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, a telescopic block 71 used for being clamped with the upper clamping hole 61 and the lower clamping hole 62 is arranged on the support rod 7, the telescopic block 71 is a jumping bean spring (as shown in the upper part of fig. 14), and the telescopic block 71 can be controlled to stretch by pressing the telescopic block.

As shown in fig. 13, the surface of the folding rod 6 is provided with a first line groove 60, the surface of the supporting rod 7 is provided with a second line groove 70, and the first line groove 60 and the second line groove 70 are matched, so that the folding rod 6 and the supporting rod 7 keep vertical reciprocating sliding and are prevented from relative rotation, and 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 clamped into the upper clamping hole 61, the support rod 7 is retracted into the folding rod 6, the length of the whole support mechanism is shortest, and the support mechanism can be folded into the embedded groove 210 of the horizontal rod 21; when the telescopic block 71 is clamped into the lower clamping hole 62, the support rod 7 extends out of the folding rod 6 to the maximum distance, the length of the whole support mechanism is 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 portion of the horizontal rod 21 is provided with an embedded groove 210 for accommodating the supporting mechanism, when the supporting rod 7 is retracted into the folding rod 6, the whole supporting mechanism can be embedded into the embedded groove 210 by folding the folding rod 7, so that the space occupancy rate of the supporting mechanism can be reduced as much as possible when the supporting mechanism is not used, and the size of the whole bracket is smaller.

As shown in fig. 7, when the folding rod 6 is in the extended state (the folding rod 6 is opened to the maximum angle to the outside), the included angle formed between the folding rod 6 and the horizontal rod 21 is an obtuse angle, the butt joint part 211 is arranged on one side of the embedded groove 210 of the horizontal rod 21 facing the supporting plate 5, the butt joint part 211 is an arc-shaped plate, when the patient places the affected limb on the supporting plate 5, the force application point is located at the outer end (the side of the limiting mechanism 4) of the horizontal rod 21, the horizontal rod 21 is pressed downwards to enable the butt joint part 211 to abut against the side surface of the folding rod 6, because the butt joint part 211 is an arc-shaped plate, the contact area between the butt joint part 211 and the folding rod 6 is large and is more uniformly stressed, the folding rod 6 is prevented from being deformed at the abutting position, and therefore, even if the supporting plate 5 is impacted.

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 ejecting the foot pad 8 downwards are arranged behind the foot pad 8, the connecting rod 80 connects the foot pad 8 and the elastic member 81, and the elastic member 81 is located inside the support rod 7. The link 80 is pushed out by the elastic member 81, wherein the elastic member 81 is a cylindrical spring. The foot pad 8 is continuously in an elastic supporting state through the spring, when a patient places a wounded limb on the supporting plate 5, the elastic piece 81 can provide certain elastic supporting and lifting force for the supporting plate 5, and when a family pushes the wheelchair, even if vibration is generated when the wheelchair travels, the vibration amplitude can be reduced through the spring, and the influence is reduced; secondly, the elastic member 81 makes the foot pad 8 in an ejected state, and when the supporting mechanism is folded into the caulking groove 210 of the horizontal rod 21, the foot pad 8 can be propped up to keep the folding rod 6 and the supporting rod 7 fixed in the caulking groove 210.

As shown in fig. 15 and 16, be equipped with on the footboard 9 and be used for bracing piece 7 and callus on the sole 8 to put into spacing pedal groove 90, pedal groove 90 is located the upper surface of footboard 9, carry on spacingly through pedal groove 90 to callus on the sole 8, strengthen footboard 9 fixed to bracing piece 7 (also be callus on the sole 8), even collide with road surface stone or other obstacles and produce the impact force at the wheelchair in-process of marcing, bracing piece 7 still is in pedal groove 90, avoid callus on the sole 8 along with the vibrations and the footboard 9 slippage of fixed position, ensure that supporting mechanism can last support layer board 5, avoid bracing piece 7 slippage and the support damage and the affected limb that lead to drop.

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

① fold the horizontal bar 21 out forward.

② the foot pad 8 compresses the elastic element 81 inwards, the folding rod 6 with the support rod 7 is taken out from the embedding groove 210 of the horizontal rod 21, the telescopic block 71 is pressed inwards, the telescopic block 71 is separated from the upper clamping hole 61, the support rod 7 is pulled outwards, the length of the support mechanism is pulled to the longest length, at the moment, the telescopic block 71 is popped out and enters the lower clamping hole 62, and the outward pulling and fixing of the support rod 7 are completed.

③, until the folding bar 6 abuts against the abutment 211 (the step of abduction is shown in fig. 12-10), the foot pad 8 is placed in alignment with the foot slot 90.

④ the second locking bolt 42 is unscrewed to unlock the limiting mechanism 4, the height of the supporting plate 5 is adjusted by adjusting the angle of the vertical rod 22, and after the height is adjusted to a proper height, the second locking bolt 42 is screwed again to lock the limiting mechanism 4.

⑤ the first locking bolt 32 is loosened and the ball sleeve 30 is rotated to adjust the orientation of the pallet 5.

⑥ the universal ball 31 in the universal mechanism 3 can move freely, the connecting rod 310 can adjust in the notch 301 by a larger angle, the first locking bolt 32 retracts after the adjustment is finished, the supporting plate 5 is fixed, the patient/accompanying person presses the supporting plate 5 with a hand to test the strength of the supporting plate, and the supporting force is enough to place the affected limb on the supporting plate 5.

The above description is a preferred embodiment of the present invention, and a person skilled in the art can make several modifications and improvements without departing from the principles of the present invention, and these should also be regarded as the protection scope of the present invention.

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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