CN109771159A - Reinforce the wheelchair of straight legs support - Google Patents

Abstract

The invention discloses a kind of wheelchairs of reinforcing straight legs support, including seat, chair frame, pedal and bracket, bracket includes fixed frame, horizon bar, vertical bar, position-limit mechanism, omnidirectional mechanism and supporting plate, and supporting plate is fixed on vertical bar by omnidirectional mechanism, and position-limit mechanism is between horizon bar and vertical bar；It is equipped with supporting mechanism in horizon bar, supporting mechanism includes pole and support rod, and pole overturning is connected to horizon bar outer end, and support rod is slidably socketed on pole, and support rod is with respect to pole Telescopic sliding to being connected to pedal surface；When horizon bar is turned-out to be folded to towards in front of wheelchair, pole, which can be turned down to support rod, to be aligned and is pressed against pedal surface.By adding foldable bracket and supporting plate below the chair frame of wheelchair, by limb elevation and the postures of straight legs is kept by the supporting plate on bracket, prevent suffering limb postoperative edema, reduce the pain generated when shank tenesmus, secondly supporting mechanism can effectively improve supporting structure intensity, improve service life and comfort level.

Description

Reinforce the wheelchair of straight legs support

Technical field

The present invention relates to wheelchair, specially a kind of wheelchair for reinforcing straight legs support.

Background technique

Wheelchair is equipped with the chair of wheel, is in rehabilitation, turnover transport, medical, outgoing for the wounded, patient, disabled person Movable important mobile tool, wheelchair it not only meet riding instead of walk for limbs the disabled and people with mobility problems, it is often more important that side Just family members are mobile and look after patient.

Currently, common wheelchair is in fracture patient (thigh or fracture of lower leg) if in use, foot is stepped down in wheelchair by patient On pedal, shank and thigh are in natural hang, can bring following problems in this way:

(1) since leg is sagging, fracture pulls power offset, can making patients' pain and discomfort.

(2) tissue fluid is stranded in leg with gravity, is easy to cause limb edema and swelling in leg accumulation.

Summary of the invention

The purpose of the invention is to provide a kind of wheelchair of reinforcing straight legs support, by being added below the chair frame of wheelchair Foldable bracket and supporting plate by limb elevation and keep the postures of straight legs by the supporting plate on bracket, prevent the postoperative water of suffering limb It is swollen, the pain generated when shank tenesmus is reduced, secondly supporting mechanism can effectively improve supporting structure intensity, improve service life And comfort level.

In order to achieve the above-mentioned object of the invention, the invention adopts the following technical scheme: a kind of wheelchair for reinforcing straight legs support, Including seat, chair frame and pedal, the seat has seat, and wheelchair further includes 1 or 2 brackets, and the bracket includes fixing Frame, horizon bar, vertical bar, position-limit mechanism, omnidirectional mechanism and supporting plate, the fixed frame are mutually fixed with chair frame, the horizon bar water Flat to be articulated with fixed frame one end, vertical bar is articulated with the other end of horizon bar vertically, and supporting plate is fixed on vertically by omnidirectional mechanism The other end of bar, position-limit mechanism is between horizon bar and vertical bar；Position-limit mechanism is for limiting and adjusting vertical bar with respect to water Included angle between flat bar；Omnidirectional mechanism be used to adjust supporting plate towards angle；

Supporting mechanism is equipped in the horizon bar, the supporting mechanism includes pole and support rod, and the pole overturning is connected to Towards the outer end of supporting plate, support rod is slidably socketed on pole horizon bar, and support rod is with respect to pole Telescopic sliding to being connected to Pedal surface；

When horizon bar is turned-out to be folded to towards in front of wheelchair, the pole, which can be turned down to support rod, is directed at and is pressed against pedal table Face.

Preferably, the caulking groove for being used to support mechanism storage is equipped in the middle part of the horizon bar.

Preferably, the pole is the rod-like structure of inner hollow, and pole is socketed on the outer surface of support rod, pole and branch There are clamping structure between strut, the clamping structure includes upper card hole and lower card hole, and upper card hole is located at pole inner end, lower card hole Positioned at pole outer end, support rod is equipped with the telescopic block for ibid card hole and the clamping of lower card hole；

When telescopic block snaps onto upper card hole, the support rod is retracted into inside pole, and entire supporting mechanism can be folded into Into the caulking groove of horizon bar；

When telescopic block snaps onto lower card hole, the support rod stretches out pole to maximum distance, and support rod bottom can contact pedal Upper surface.

Preferably, the support rod bottom be equipped with foot pad, the foot pad rear be equipped with connecting rod and for continue by foot pad to The elastic component of lower ejection, the connecting rod connecting foot pad and elastic component, elastic component are located inside support rod.

Preferably, the pedal steps on slot equipped with bar/foot pad merging limit is used to support, and the slot position of stepping on is in pedal Upper surface.

Preferably, the omnidirectional mechanism includes multi-directional ball, ball cover and first locking mechanism fixed for multi-directional ball, described Multi-directional ball is located inside ball cover, and ball cover is located at the outer end of vertical bar, ball cover top opening, and supporting plate is fixed in multi-directional ball, supporting plate Positioned at ball cover overthe openings.

Preferably, rodlike connecting rod is also connected between the multi-directional ball and supporting plate, the ball cover side wall is offered for even Extension bar is in the notch overturn in perpendicular, the notch and open communication.

Preferably, first locking mechanism includes position limiting convex ring, jacking block and the first clamping screw, the position limiting convex ring position In the inner wall of ball cover opening, for multi-directional ball between jacking block and position limiting convex ring, position limiting convex ring internal diameter is less than multi-directional ball outer diameter, institute It states ball cover and offers the first threaded hole corresponding with the first clamping screw, the jacking block, which is equipped with to be screwed into the first clamping screw, to be made Multi-directional ball is pressed in the inclined surface of position limiting convex ring by jacking block.

Preferably, the ball cover is socketed on jacking block side wall, and jacking block is fixed on the outer end of vertical bar, ball cover can with respect to jacking block/ Vertical bar rotates in a circumferential direction.

Preferably, the position-limit mechanism includes hinged disk, plugboard and the second locking mechanism, is equipped in the middle part of the hinged disk Slot, the plugboard are inserted into the slot in the middle part of hinged disk, and hinged disk and plugboard pass through pivot knuckles；Second lock Locking structure includes the second threaded hole and the second clamping screw；Second threaded hole is opened in hinged disk outer wall, the second locking screw Bolt passes through the second threaded hole and compresses plugboard.

Compared with prior art, the wheelchair supported using the reinforcing straight legs of above-mentioned technical proposal has following beneficial to effect Fruit:

One, the wheelchair supported using reinforcing straight legs of the invention, by added below the chair frame of wheelchair fixed frame, horizon bar and Vertical bar, entourage, which can fold bracket below the chair frame, to carry out using leg is raised and kept by upper supporting plate The posture of straight legs prevents suffering limb postoperative edema, reduces the pain generated when shank tenesmus.

Two, the height of supporting plate is adjusted by position-limit mechanism, then adjusts the angle of supporting plate by omnidirectional mechanism, to meet difference The demand of the long patient of height leg.

It three,, can also when bracket folding enters below chair frame since bracket can be turned down in chair frame underside Normal use is carried out with the patient handicapped for other.

Four, supporting mechanism bottom is supported entire horizon bar front position by pole and support rod, to supporting plate bottom Portion position is supported and lifts, and puts leg to good use gravity above supporting plate and is dispersed on pedal by supporting mechanism, effectively The structural strength for improving bracket, prevents bracket from fractureing.

Detailed description of the invention

Fig. 1 is the structural schematic diagram (unfolded state) for the wheelchair embodiment that the present invention reinforces straight legs support.

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

Fig. 3 is the side view of wheelchair in embodiment.

Fig. 4 is the structural schematic diagram of bracket in embodiment.

Fig. 5 is the perspective view of the explosion of bracket in embodiment.

Fig. 6 is the partial enlarged view in Fig. 5 at A.

Fig. 7 is the partial enlarged view in Fig. 3 at B.

Fig. 8 is the cross-sectional view of omnidirectional mechanism in embodiment.

Fig. 9 is the structural schematic diagram of omnidirectional mechanism in embodiment.

Figure 10 is the structural schematic diagram (outreach state) of horizon bar and supporting mechanism in embodiment.

Figure 11 is that horizon bar inner support mechanism uses schematic diagram in embodiment (during gathering).

Figure 12 is that horizon bar inner support mechanism uses schematic diagram (rounding state) in embodiment.

Figure 13 is the structural schematic diagram of supporting mechanism in embodiment.

Figure 14 is the cross-sectional view of supporting mechanism in embodiment.

Figure 15 is the cooperation schematic diagram that slot and foot pad are stepped in embodiment.

Figure 16 is the structural schematic diagram of pedal in embodiment.

Appended drawing reference: 1, fixed frame；21, horizon bar；210, caulking groove；211, docking section；22, vertical bar；3, omnidirectional mechanism； 30, ball cover；300, position limiting convex ring；301, notch；31, multi-directional ball；310, connecting rod；32, the first clamping screw；33, jacking block；4, Position-limit mechanism；40, hinged disk；400, slot；401, the second threaded hole；41, plugboard；42, the second clamping screw；5, supporting plate； 6, pole；60, the first wire casing；61, upper card hole；62, lower card hole；7, support rod；70, the second wire casing；71, telescopic block；8, foot pad； 80, connecting rod；81, elastic component；9, pedal；90, slot is stepped on.

Specific embodiment

The present invention is described further with reference to the accompanying drawing.

The wheelchair of reinforcing straight legs support, the bracket including seat, chair frame and Foldable movable, seat as shown in Fig. 1 to 16 Chair tool has seat, and bracket is located at below seat, and bracket can turn down, and when it is unfolded outward, (as shown in figures 1 and 3) can be propped up The supporting plate 5 of top is played, the leg for patient unilateral side is raised and supported, and to keep straight legs state, avoids dropping and bring pain Bitterly, effectively alleviate the situation of limb edema.When it is not needed in use, can incite somebody to action as after Rehabilitation and when handicapped Bracket is retracted to folded state shown in Fig. 2, bracket is collapsed below seat, patient can normally be sitting on wheelchair, nothing Leg need to be raised.

Altogether include two brackets in wheelchair in the present embodiment, bracket can left leg to patient or right leg be supported, Both legs can also be carried out while be supported, wheelchair is also possible to independent side equipped with bracket, is only supported to unilateral suffering limb.

As shown in Figure 4 and Figure 5, bracket includes fixed frame 1, horizon bar 21, vertical bar 22, position-limit mechanism 4, omnidirectional mechanism 3 With supporting plate 5, wherein the effect of all parts is as follows:

1. fixed frame 1 is mutually fixed with chair frame, the effect of integrated support and fixation is primarily served.

2. horizon bar 21 is horizontally hinged in 1 one end of fixed frame, it is mainly responsible for the integral level fold movement to bracket, expansion The horizontal anomalous movement of horizon bar 21 is required to contraction to realize.

It, can be to supporting plate 5 by cooperating position-limit mechanism 4 3. vertical bar 22 is articulated with the other end of horizon bar 21 vertically Height and front-rear position are adjusted.

4. position-limit mechanism 4 is for limiting and adjusting included angle between 22 relative level bar 21 of vertical bar, perpendicular by limiting The activity of straight-bar 22 and horizon bar 21 is to complete the adjusting and fixed function to the two.

5. position-limit mechanism 4 is between horizon bar 21 and vertical bar 22；Omnidirectional mechanism 3 be used to adjust supporting plate 5 towards angle Degree, is the final adjustment to supporting plate 5, can adapt to patient and patient can be made to find the limb elevation posture of the most comfortable.

6. supporting plate 5 is fixed on the other end of vertical bar 22 by omnidirectional mechanism 3, suffering limb is mainly carried with plate face, it will Suffering limb is to be raised to rehabilitation position.Supporting plate 5 is arc panel of the middle part to lower recess, and when limb elevation naturally drops into supporting plate 5 Middle part is not easy to fall off from edge.

As shown in Figure 5 and Figure 6, position-limit mechanism 4 includes hinged disk 40, plugboard 41 and the second locking mechanism, hinged disk 40 Middle part is equipped with slot 400, and plugboard 41 is inserted into the slot 400 at 40 middle part of hinged disk, and hinged disk 40 and plugboard 41 pass through Pivot knuckles；Second locking mechanism includes the second threaded hole 401 and the second clamping screw 42；Second threaded hole 401 is opened in hinge 40 outer wall of disk is connect, the second clamping screw 42 passes through the second threaded hole 401 and compresses plugboard 41.To tighten the second clamping screw 42 Mode, so that the second clamping screw 42 is pressed into 41 surface of plugboard, the mode for improving the two friction clamps plugboard 41, so that Activity between vertical bar 22 and horizon bar 21 is limited by position-limit mechanism.

As shown in Figure 8 and Figure 9, omnidirectional mechanism 3 includes multi-directional ball 31, ball cover 30 and first lock fixed for multi-directional ball 31 Locking structure, multi-directional ball 31 are located inside ball cover 30, and ball cover 30 is located at the outer end of vertical bar 22,30 top opening of ball cover, and supporting plate 5 is consolidated Due in multi-directional ball 31, supporting plate 5 is located at 30 overthe openings of ball cover.Omnidirectional mechanism can make entire supporting plate 5 in 30 opening of ball cover Generate cone and adjust angle, user can arbitrarily adjust the angle of supporting plate 5 in the range so that supporting plate 5 towards angle Degree can achieve most selections, and multi-directional ball 31 is fixed subsequently through the first locking mechanism, rotate it can not, complete The adjusting of 5 angle of supporting plate.

As shown in figure 8, the first locking mechanism includes position limiting convex ring 300, jacking block 33 and the first clamping screw 32, position limiting convex ring 300 are located at the inner wall of 30 opening of ball cover, and multi-directional ball 31 is between jacking block 33 and position limiting convex ring 300,300 internal diameter of position limiting convex ring Less than 31 outer diameter of multi-directional ball, ball cover 30 offers first threaded hole corresponding with the first clamping screw 32, jacking block 33 be equipped with First clamping screw 32 is screwed into the inclined surface for making jacking block 33 that multi-directional ball 31 to be pressed in position limiting convex ring 300.Pass through the first locking screw Bolt 32, which is screwed into, holds out against the conical surface, makes jacking block that 33 multi-directional balls are pressed in position limiting convex ring 330, realizes the fixation of multi-directional ball 31, locking When contact point it is more, fixing-stable is reliable, and multi-directional ball 31 be not easy with supporting plate 5 be pressurized and deflect.

As shown in figure 9, being also connected with rodlike connecting rod 310 between multi-directional ball 31 and supporting plate 5,30 side wall of ball cover offers confession Connecting rod 310 is in the notch 301 overturn in perpendicular, notch 301 and open communication.The purpose that opens up of notch 301 is to make Certain angle can be downwardly turned over to the position where notch 301 by obtaining multi-directional ball 31, obtain bigger tune in perpendicular Adjusting range.

Wherein, ball cover 30 is socketed on 33 side wall of jacking block, and jacking block 33 is fixed on the outer end of vertical bar 22, and ball cover 30 can opposite top 33/ vertical bar 22 of block rotates in a circumferential direction, and the conical surface is tapered slope, and jacking block 33 rotates horizontally 360 ° of first clamping screw 32 still can To director cone, i.e. ball cover can be rotated with 360 ° in the horizontal plane, with adjusting slot 301 and the angle of supporting plate 5.

As shown in Figure 10 to Figure 12, supporting mechanism is equipped in horizon bar 21, supporting mechanism includes pole 6 and support rod 7, folding The overturning of bar 6 is connected to horizon bar 21 towards the outer end of supporting plate 5, and support rod 7 is slidably socketed on pole 6, and support rod 7 is with respect to pole 6 Telescopic slidings are to being connected to 9 surface of pedal.

As shown in figure 13, pole 6 is the rod-like structure of inner hollow, and pole 6 is socketed on the outer surface of support rod 7, pole 6 There are clamping structure between support rod 7, clamping structure includes upper card hole 61 and lower card hole 62, and upper card hole 61 is located in pole 6 End, lower card hole 62 are located at 6 outer end of pole, and support rod 7 is equipped with the telescopic block 71 for ibid card hole 61 and the clamping of lower card hole 62, Telescopic block 71 uses jumping bean spring (as shown in Figure 14 top half), can control it flexible by pressing telescopic block 71 i.e..

As shown in figure 13,6 surface of pole is equipped with the first wire casing 60, and 7 surface of support rod is equipped with the second wire casing 70, passes through first Wire casing 60 and the second wire casing 70 match, and reciprocatingly slide so that pole 6 and support rod 7 keep vertical, prevent the two from phase occurs To rotation, to ensure that telescopic block 71 can be directed at upper card hole 61 and lower card hole 62.

When telescopic block 71 snaps onto upper card hole 61, support rod 7 is retracted into inside pole 6, and entire supporting mechanism length is most It is short, it can be folded into the caulking groove 210 of horizon bar 21；When telescopic block 71 snaps onto lower card hole 62, support rod 7 stretches out folding Bar 6 to maximum distance, entire supporting mechanism length longest, 7 bottom of support rod can contact 9 upper surface of pedal.

As shown in figure 12, the caulking groove 210 for being used to support mechanism storage is equipped in the middle part of horizon bar 21, when support rod 7 is retracted into In pole 6, entire supporting mechanism can be embedded into caulking groove 210 by turning down pole 7, so that supporting mechanism is not using When, space occupancy rate can be reduced as far as possible, so that entire bracket volume is smaller.

As shown in fig. 7, when pole 6 is in outreach state (pole 6 is opened outward to maximum angle), pole 6 and water The angle formed between flat bar 21 is obtuse angle, is equipped with docking section 211, docking towards the side of supporting plate 5 in 21 caulking groove 210 of horizon bar Portion 211 is arc panel, and when suffering limb is placed on supporting plate 5 by patient, the point of application is located at the outer end (position-limit mechanism of horizon bar 21 4 sides), horizon bar 21 pushes so that docking section 211 is abutted with the side of pole 6, since docking section 211 is arc panel, so that Docking section 211 and the larger stress of 6 contact area of pole are more uniform, and avoiding pole 6, deformation occurs at abutting, therefore even if support Plate 5 is made by downward impact, is also not easy that supporting mechanism is bent or broken.

As shown in figure 14,7 bottom of support rod is equipped with foot pad 8, and 8 rear of foot pad is equipped with connecting rod 80 and for continuing foot pad 8 The elastic component 81 ejected downwards, 80 connecting foot pad 8 of connecting rod and elastic component 81, elastic component 81 are located inside support rod 7.Pass through elasticity Connecting rod 80 is pushed outwardly by part 81, and wherein elastic component 81 uses column spring.By spring make foot pad 8 it is lasting in elasticity Holding state, when suffering limb is placed on supporting plate 5 by patient, elastic component 81 can provide the certain elasticity of supporting plate 5 and lift power, when When family members push wheelchair, even if generating vibration when wheelchair is advanced, also vibration amplitude can be reduced by spring, reducing influences；Its Secondary, elastic component 81 makes foot pad 8 be in pop-up state, when supporting mechanism collapses in the caulking groove 210 of horizon bar 21, Ke Yitong Foot pad 8 is crossed to prop up to keep the fixation of pole 6 and support rod 7 in caulking groove 210.

As shown in Figure 15 and Figure 16, pedal 9 be equipped be used to support bar 7 and foot pad 8 merging limit step on slot 90, step on slot 90 Positioned at the upper surface of pedal 9, foot pad 8 is limited by stepping on slot 90, reinforces pedal 9 to support rod 7(i.e. foot pad 8) It is fixed, impact force is generated even if colliding with road surface stone or other barriers in wheelchair traveling process, support rod 7 is still in Step in slot 90, avoid foot pad 8 with vibration and slipped with the pedal 9 of fixed position, it is ensured that supporting mechanism can continue to supporting plate 5 It is supported, bracket breakage and suffering limb are fallen caused by avoiding support rod 7 from slipping.

It carries out when needing to fold on bracket in use, its step are as follows:

1. horizon bar 21 is folded forward.

2. elastic component 81 is inwardly compressed in foot pad 8, pole 6 is taken out out of horizon bar 21 caulking groove 210 with support rod 7, Telescopic block 71 inwardly is pressed, so that telescopic block 71 is detached from out of upper card hole 61, support rod 7 is pullled outward and makes supporting mechanism length Draw longest, the pop-up of telescopic block 71 at this time enters in lower card hole 62, complete support rod 7 it is outside pull fixation.

3. supporting mechanism is folded outward, until pole 6 is against on docking section 211 (outreach step institute from Figure 12 to Figure 10 Show), and slot 90 is stepped on into the alignment of foot pad 8 and is put into.

4. the second clamping screw 42 is unscrewed, so that position-limit mechanism 4 unlocks, by adjusting the angle of vertical bar 22 to supporting plate 5 Height be adjusted, after being adjusted to appropriate height, tighten the second clamping screw 42 again, position-limit mechanism 4 locked.

5. unclamping the first clamping screw 32, ball cover 30 is rotated, the direction of supporting plate 5 is adjusted.

6. the multi-directional ball 31 in omnidirectional mechanism 3 can be move freely simultaneously, connecting rod 310 can be carried out in notch 301 compared with First clamping screw 32 is retracted after adjustment, supporting plate 5 is fixed, at this time patient/entourage by the adjustment of wide-angle Its intensity is tested with subordinate pressing palette 5, support force can allow patient that suffering limb is placed on supporting plate 5 enough.

The above is a preferred embodiment of the present invention, does not depart from this hair for those of ordinary skill in the art Under the premise of bright principle, several variations and modifications can also be made, these also should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of wheelchair for reinforcing straight legs support, including seat, chair frame and pedal (9), the seat have seat, feature exists In: it further include 1 or 2 brackets, the bracket includes fixed frame (1), horizon bar (21), vertical bar (22), position-limit mechanism (4), omnidirectional mechanism (3) and supporting plate (5), the fixed frame (1) are mutually fixed with chair frame, and the horizon bar (21) is horizontally hinged in solid Determine frame (1) one end, vertical bar (22) is articulated with the other end of horizon bar (21) vertically, and supporting plate (5) is fixed by omnidirectional mechanism (3) The other end in vertical bar (22), position-limit mechanism (4) are located between horizon bar (21) and vertical bar (22)；Position-limit mechanism (4) is used The included angle between limitation and adjusting vertical bar (22) relative level bar (21)；Omnidirectional mechanism (3) is for adjusting supporting plate (5) Towards angle；

Supporting mechanism is equipped in the horizon bar (21), the supporting mechanism includes pole (6) and support rod (7), the pole (6) overturning is connected to outer end of the horizon bar (21) towards supporting plate (5), and support rod (7) is slidably socketed on pole (6), support rod (7) opposite pole (6) Telescopic sliding is to being connected to pedal (9) surface；

When horizon bar (21) is turned-out to be folded to towards in front of wheelchair, the pole (6) can turn down to support rod (7) and be aligned and press Lean against pedal (9) surface.

2. the wheelchair according to claim 1 for reinforcing straight legs support, it is characterised in that: be equipped in the middle part of the horizon bar (21) It is used to support the caulking groove (210) of mechanism storage.

3. the wheelchair according to claim 2 for reinforcing straight legs support, it is characterised in that: the pole (6) is inner hollow Rod-like structure, pole (6) is socketed on the outer surface of support rod (7), there are clamping structure between pole (6) and support rod (7), The clamping structure includes upper card hole (61) and lower card hole (62), and upper card hole (61) is located at pole (6) inner end, lower card hole (62) position In pole (6) outer end, support rod (7) is equipped with the telescopic block (71) for ibid card hole (61) and lower card hole (62) clamping；

When telescopic block (71) snaps onto upper card hole (61), the support rod (7) is retracted into pole (6) inside, entirely supports machine Structure can be folded into the caulking groove (210) of horizon bar (21)；

When telescopic block (71) snaps onto lower card hole (62), the support rod (7) stretches out pole (6) to maximum distance, support rod (7) bottom can contact pedal (9) upper surface.

4. the wheelchair according to claim 1 for reinforcing straight legs support, it is characterised in that: support rod (7) bottom is equipped with Foot pad (8), foot pad (8) rear are equipped with connecting rod (80) and the elastic component (81) for continuing downwards to eject foot pad (8), institute Connecting rod (80) connecting foot pad (8) and elastic component (81) are stated, it is internal that elastic component (81) is located at support rod (7).

5. the wheelchair according to claim 1 or 4 for reinforcing straight legs support, it is characterised in that: the pedal (9), which is equipped with, to be used It is stepped on slot (90) in support rod (7)/foot pad (8) merging limit, the upper surface stepped on slot (90) and be located at pedal (9).

6. the wheelchair according to claim 1 for reinforcing straight legs support, it is characterised in that: the omnidirectional mechanism (3) includes ten thousand It is located at ball cover to ball (31), ball cover (30) and first locking mechanism fixed for multi-directional ball (31), the multi-directional ball (31) (30) internal, ball cover (30) is located at the outer end of vertical bar (22), ball cover (30) top opening, and supporting plate (5) is fixed on multi-directional ball (31) on, supporting plate (5) is located at ball cover (30) overthe openings.

7. the wheelchair according to claim 6 for reinforcing straight legs support, it is characterised in that: the multi-directional ball (31) and supporting plate (5) it is also connected between rodlike connecting rod (310), ball cover (30) side wall is offered for connecting rod (310) in perpendicular The notch (301) of interior overturning, the notch (301) and open communication.

8. the wheelchair according to claim 6 for reinforcing straight legs support, it is characterised in that: first locking mechanism includes limit Position bulge loop (300), jacking block (33) and the first clamping screw (32), the position limiting convex ring (300) are located at ball cover (30) opening Inner wall, multi-directional ball (31) are located between jacking block (33) and position limiting convex ring (300), and position limiting convex ring (300) internal diameter is less than multi-directional ball (31) outer diameter, the ball cover (30) offer the first threaded hole corresponding with the first clamping screw (32), the jacking block (33) Equipped with being screwed into the inclined surface for making jacking block (33) that multi-directional ball (31) to be pressed in position limiting convex ring (300) with the first clamping screw (32).

9. the wheelchair according to claim 8 for reinforcing straight legs support, it is characterised in that: the ball cover (30) is socketed on jacking block (33) side wall, jacking block (33) are fixed on the outer end of vertical bar (22), and ball cover (30) can be circumferential with respect to jacking block (33)/vertical bar (22) Rotation.

10. the wheelchair according to claim 1 for reinforcing straight legs support, it is characterised in that: the position-limit mechanism (4) includes hinge Disk (40), plugboard (41) and the second locking mechanism are connect, is equipped with slot (400) in the middle part of the hinged disk (40), the plugboard (41) it is inserted into the slot (400) in the middle part of hinged disk (40) Nei, hinged disk (40) and plugboard (41) pass through pivot knuckles；It is described Second locking mechanism includes the second threaded hole (401) and the second clamping screw (42)；Second threaded hole (401) is opened in hinge Disk (40) outer wall is connect, the second clamping screw (42) passes through the second threaded hole (401) and compresses plugboard (41).