CN215915581U - Multifunctional anti-falling walking aid vehicle - Google Patents

Abstract

The utility model relates to a multifunctional anti-falling rollator, which comprises: the base frame is enclosed by a left bottom rod, a front bottom rod and a right bottom rod to form an Contraband shape, and a plurality of trundles are arranged on the lower side of the base frame; the lower ends of the plurality of supporting columns are fixedly arranged on the base frame; the handrail frame is arranged at the upper end of the pillar and is enclosed by a left handrail, a rear handrail and a right handrail to form an Contraband shape, and the two ends of the door fence are respectively arranged at the two ends of the handrail frame to form a closed-loop frame shape with the handrail frame; the lifting belts comprise a left lifting belt, a right lifting belt and a rear lifting belt; the lower ends of the left sling, the right sling and the rear sling are respectively connected to 3 corners of the triangular frame hanging seat, and the upper ends of the left sling, the right sling and the rear sling are respectively connected to a left supporting rod, a rear supporting rod and a right supporting rod of the supporting frame; leg fixing bands are arranged at the positions where the triangular frame hanging seat is connected with the left hanging strip and the right hanging strip. When a user suddenly fails to sit on the seat, the user can sit on the triangular frame hanging seat, and can sit on the triangular frame hanging seat for convenience.

Description

Multifunctional anti-falling walking aid vehicle

Technical Field

The utility model belongs to the technical field of medical instruments and protective articles, and particularly relates to a multifunctional anti-falling walking aid vehicle.

Background

With the arrival of an aging society, many problems are presented to the society and families, and almost every family has the problem that the old people in the family are inconvenient to move and need to be nursed. For the elderly, wrestling is almost an unexpected risk that they cannot afford, and almost all elderly wrestling can lead to fractures. Once the fracture is basically a disaster, many people can lose the self-care ability of life and even the life. In addition to the factors of natural aging, some people also suffer from lower limb weakness or mobility difficulties due to disease (e.g., stroke) or accidents. These persons' necessary rehabilitation, exercise, bathing, toileting activities are difficult to accomplish independently without care and assistance or are prone to falling. For many households, such all-weather follow-up care and care has been economically and energetically burdensome.

If there is a device or apparatus that will allow these people to perform these activities and even other activities of self-care without the assistance of others, without the safety risk of falling, the quality of life of these patients will be greatly improved and the burden and worry of their families and relatives will be greatly reduced.

Although there are currently a number of walkers or wheeled crutches which can help a patient with lower limb disability to share part of their body weight and assist in supporting their body to varying degrees, they are not effective in preventing the patient from falling. Especially, the patients can not play any role in the daily self-care aspects such as catering manufacture and taking, bathing, toileting and the like.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides an anti-falling rollator.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a multi-functional fall-preventing rollator which is characterized by comprising:

the base frame is enclosed by a left bottom rod, a front bottom rod and a right bottom rod to form an Contraband shape, and a plurality of trundles are arranged on the lower side of the base frame;

the lower ends of the plurality of supporting columns are fixedly arranged on the base frame;

the handrail frame is arranged at the upper end of the support column, the handrail frame is enclosed by a left handrail, a rear handrail and a right handrail to form an Contraband shape, and two ends of the door fence are respectively arranged at two ends of the handrail frame to form a closed-loop frame shape with the handrail frame;

the lifting belt comprises a left lifting belt, a right lifting belt and a rear lifting belt; the lower ends of the left sling, the right sling and the rear sling are respectively connected to 3 corners of the triangular frame hanging seat, and the upper ends of the left sling, the right sling and the rear sling are respectively connected to a left supporting rod, a right supporting rod and a rear supporting rod of the supporting frame; leg fixing bands are arranged at the positions where the triangular frame hanging seat is connected with the left hanging strip and the right hanging strip.

Furthermore, the two ends of the front bottom rod extend outwards to form a stabilizing rod, and the free end of the stabilizing rod is provided with the caster.

Further, a waist fixing belt is arranged at the lower part of the rear hanging strip.

Further, a reinforcing frame is provided in the middle of the pillars in the shape of Contraband surrounding the pillars from the left, rear and right sides.

Further, in the present invention,

the door fence is an arched rod, the left end and the right end of the door fence extend in a bending mode, one end of the door fence forms a door lock head, and the other end of the door fence forms a door spindle head; the door lock head is provided with a through inner pin hole along the radial direction of the door lock head, the end part of the door spindle head continues to extend to form a limiting neck, the diameter of the limiting neck is smaller than that of the door spindle head, the free end of the limiting neck is expanded to form a limiting head, and an annular neck groove surrounding the limiting neck is formed between the door spindle head and the limiting head;

one of the front end of the left holding rod and the front end of the right holding rod is provided with a lock head sleeve, the other one of the front end of the left holding rod and the front end of the right holding rod is provided with a door shaft sleeve, the lock head sleeve is provided with a penetrating outer pin hole corresponding to the penetrating inner pin hole, and a limit pin is nailed into the side wall of the door shaft sleeve;

the door spindle head, the limiting neck and the limiting head are pivoted and inserted into the door spindle sleeve, and the limiting pin extends into the annular neck groove; the door lock head is inserted into the lock head sleeve, the penetrating inner pin hole is opposite to the penetrating outer pin hole, the locking pin is inserted into the penetrating outer pin hole and the penetrating inner pin hole to fix the door sill, and at the moment, the clear distance between the limiting pin and the limiting head is larger than or equal to the length of the door lock head.

Further, the truckle is through should carrying telescopic machanism to set up on the base frame, should carry telescopic machanism and include:

the fixed sliding sleeve is fixedly arranged on the base frame, an end sealing plate is arranged at the top of the fixed sliding sleeve, and a through rod through hole is formed in the center of the end sealing plate;

the sliding rod is inserted into the rod passing through hole, the upper end of the sliding rod is in threaded connection with a tensioning nut, the radial size of the tensioning nut is larger than that of the rod passing through hole, a limiting flange plate is arranged at the lower part of the sliding rod, the lower end of the sliding rod extends out of the lower end of the fixed sliding sleeve, and the caster wheel is arranged at the lower end of the sliding rod;

the telescopic spring is sleeved on the sliding rod, the upper end of the telescopic spring abuts against the inner side of the end sealing plate, and the lower end of the telescopic spring abuts against the limiting flange plate.

Still further, the telescopic mechanism to be loaded further comprises a movable sliding sleeve which is arranged on the limiting flange plate, the movable sliding sleeve is inserted into the fixed sliding sleeve and sleeves the lower parts of the sliding rod and the telescopic spring, and the movable sliding sleeve is in sliding fit with the fixed sliding sleeve.

And the side wall of the upper end of the fixed sliding sleeve is provided with a pair of opposite hanging buckle through holes, and two ends of the elastic U-shaped clamp buckle are bent and extended oppositely and inserted into the pair of opposite hanging buckle through holes to clamp the fixed sliding sleeve.

Still further, the fixed sliding sleeve outer wall is equipped with along its axial retaining groove, the retaining groove upwards extends to the up end of fixed sliding sleeve from the rotation hole.

Still further, the base frame downside is provided with the locking post.

Further, the truckles are universal wheels.

Compared with the prior art, the utility model can obtain the following technical effects:

1. through the hanging strips, the triangular frame hanging seats and the leg fixing bands, a user can accurately sit on the triangular frame hanging seats when the user is suddenly powerless to sit on the hanging seats, and the user can sit on the triangular frame hanging seats when the user is convenient, so that the anti-falling rollator can effectively protect old people, weak people or people with mobility disabilities from walking and falling down when bathing, and is convenient for the old people, the weak people or people to adopt sitting postures when using a toilet, and the leg pressure is reduced; the base frame shaped like the Chinese character 'Contraband' is convenient for the anti-falling rollator to push into the sitting type closestool.

2. Adopt door fence and handrail frame to form closed loop frame shape, adopt the mounting means of half dismantlement, the person of facilitating the use passes in and out this multi-functional falling of preventing helps capable car.

3. The stress-loaded telescopic mechanism can reduce the jolt in the process of traveling.

4. The stop column is convenient for the anti-falling rollator to stop when staying and prevent rolling.

Drawings

FIG. 1 is a schematic view of an anti-fall rollator;

FIG. 2 is a schematic top view of the base frame;

FIG. 3 is a schematic view of a sling and a triangular frame sling mount;

FIG. 4 is a schematic top view of the engagement of the frame and the door sill;

FIG. 5 is a schematic view of an on-load retracting mechanism;

fig. 6 is a sectional view of the telescopic mechanism to be loaded.

Wherein, 100-base frame; 110-a caster; 120-a stop post; 130-left bottom bar; 140-front bottom bar; 150-right bottom bar; 200-a frame of a handrail; 210-left handrail; 211-locking head sleeve; 2111-through the outer pin hole; 220-right holding rod; 2211-stop pin; 221-door bushing; 230-rear support bar; 240-door fence; 241-door lock; 2411, penetrating through the inner pin hole; 242-door stub shaft; 2421-limit neck; 2422-a limiting head; 2423-annular neck groove; 250-a locking pin; 300-a pillar; 310-reinforcing frame; 400-a harness; 410-left sling; 420-right sling; 430-rear sling; 431-waist fixing belt; 500-triangular frame hanging seats; 510-leg securing straps; 610-a stationary sliding sleeve; 611-through rod through hole; 612-hanging buckle through holes; 613-holding groove; 614-end sealing plate; 620-sliding bar; 621-a tensioning nut; 622-spacing flange plate; 630-a telescoping spring; 640-a movable sliding sleeve; 650-elastic U-shaped clip.

Detailed Description

The utility model will be further explained with reference to the drawings.

As shown in the attached figure 1, the multifunctional anti-falling rollator is characterized by comprising:

a base frame 100, which is enclosed by a left bottom rod 130, a front bottom rod 140 and a right bottom rod 150 to form an Contraband shape, and a plurality of casters 110 are arranged on the lower side of the base frame 100;

a plurality of pillars 300 whose lower ends are fixedly disposed on the base frame 100;

the handrail frame 200 is arranged at the upper end of the pillar 300, the handrail frame 200 is enclosed by a left handrail 210, a rear handrail 230 and a right handrail 220 to form an Contraband shape, and the two ends of the door fence 240 are respectively arranged at the two ends of the handrail frame 200 to form a closed loop frame shape with the handrail frame 200;

a hanging strip 400 and a triangular frame hanging seat 500, wherein the hanging strip 400 comprises a left hanging strip 410, a right hanging strip 420 and a rear hanging strip 430; the lower ends of the left sling 410, the right sling 420 and the rear sling 430 are respectively connected to the 3 corners of the triangular frame hanging seat 500, and the upper ends of the left sling 410, the right sling 420 and the rear sling 430 are respectively connected to the left support rod 210, the right support rod 220 and the rear support rod 230 of the support frame 200; leg fixing straps 510 are provided at the positions where the triangular frame hanging seat 500 is connected to the left hanging strip 410 and the right hanging strip 420.

When the anti-falling walker is used, a user stands in a three-dimensional frame structure consisting of the base frame 100, the pillars 300, the armrest frame 200 and the door sill 240, and the leg fixing bands 510 can be bound on the thighs, so that the triangular frame hanger 500 is prevented from deviating due to shaking when the user sits on the chair. The door fence 240 is provided on the armrest frame 200 in an openable and closable manner, so as to facilitate the entry and exit of a user. When walking, the user holds up the handrail frame 200 and the door sill 240, and when the sudden is weak or needs to have a rest, because the leg fixing belt 510 is bound on the thigh, the user can be ensured to accurately sit on the triangular frame hanging seat 500, and the user can sit on the triangular frame hanging seat 500 when convenient, so that the anti-falling rollator not only can effectively protect the old, the weak or the handicapped from walking, and can not fall down when bathing, but also is convenient for the people to adopt sitting postures when using the toilet, and the leg pressure is reduced. The left bottom bar 130 and the right bottom bar 150 are respectively arranged at the two ends of the front bottom bar 140 to form a base frame 100 shaped like Contraband, which is convenient for the anti-falling rollator to push the sitting type toilet backwards, so that the user can use the sitting type toilet.

Further, two ends of the front bottom rod 140 extend outwards to form a stabilizing rod 141, and the caster 110 is installed at the free end of the stabilizing rod 141. As shown in FIG. 2, the stabilizing rod 141 is a part of the front bottom rod 140, the stabilizing rod 141 expands outwards, and the caster wheel 110 is arranged at the free end of the stabilizing rod 141, so that the anti-falling rollator is more stable and is not easy to tip over; meanwhile, when the walking aid car passes through the door, the stabilizing rods 141 at the two ends can pass through the door in sequence in a twisting deflection mode, so that the width of the walking aid car can be increased as much as possible on the premise of ensuring smooth passing through the door.

Further, a waist fixing band 431 is provided at a lower portion of the rear hanging strip 430. As shown in fig. 3, the user can better place the triangular frame hanging seat 500 at the rear of the hip by binding the leg fixing straps 510 to the thighs and the waist fixing straps 431 to the waist, so as to prevent the triangular frame hanging seat 500 from shaking and deviating, and the user can accurately sit on the triangular frame hanging seat; the waist fixing belt 431 can be also used to be bound on the waist after surrounding the left hanging strip 410 and the right hanging strip 420 from the outside, so that the triangular frame hanging seat is better placed behind the buttocks, and the sitting deviation is better prevented.

Further, a reinforcing frame 310 is further included, and the reinforcing frame 310 is provided in the middle of the support columns 300, has a shape of Contraband, and surrounds the plurality of support columns 300 from the left, rear, and right sides. As shown in fig. 1, the reinforcing frame 310 serves to increase the structural strength of the entire vehicle, and encloses the plurality of pillars 300 from the left, rear, and right sides, while the front side is open for a user to get in and out. The height of the reinforcing frame 310 may be higher than that of the sitting type toilet bowl, and is generally not lower than 40cm, so as to avoid the situation that the multifunctional anti-falling rollator cannot be pushed backwards into the sitting type toilet bowl due to the fact that the height of the reinforcing frame 310 is too low.

Further, in the present invention,

the door fence 240 is an arched rod, the left end and the right end of the door fence 240 extend in a bending way, one end of the door fence forms a door lock head 241, and the other end of the door fence forms a door spindle head 242; the door lock head 241 is provided with a through inner pin hole 2411 along the radial direction, the end part of the door spindle head 242 continuously extends to form a limiting neck 2421, the diameter of the limiting neck 2421 is smaller than that of the door spindle head 242, the free end of the limiting neck 2421 expands to form a limiting head 2422, and an annular neck groove 2423 surrounding the limiting neck 2421 is formed between the door spindle head 242 and the limiting head 2422;

one of the front end of the left holding rod 210 and the front end of the right holding rod 220 is provided with a lock head sleeve 211, the other is provided with a door shaft sleeve 221, the lock head sleeve 211 is provided with a through outer pin hole 2111 corresponding to the through inner pin hole 2411, and the side wall of the door shaft sleeve 221 is nailed with a limit pin 2211;

the door spindle head 242, the limit neck 2421 and the limit head 2422 are pivotally inserted into the door spindle sleeve 221, and the limit pin 2211 extends into the annular neck groove 2423; the door lock 241 is inserted into the lock head cover 211, the through inner pin hole 2411 is opposite to the through outer pin hole 2111, the locking pin 250 is inserted into the through outer pin hole 2111 and the through inner pin hole 2411 to fix the door sill 240, and at this time, the clear distance between the limit pin 2211 and the limit head 2422 is greater than or equal to the length of the door lock 241.

As shown in fig. 4, it is a way of arranging the door sill 240, so as to facilitate a user to get in and out of the crash-proof rollator, the door spindle head 242 of the door sill 240 is inserted into the door spindle sleeve 221 of the right handrail 220 along with the limit head 2422 and the limit neck 2421, the limit pin 2211 is nailed into the door spindle sleeve 221 opposite to the limit neck 2422 until the limit pin 2211 extends into the annular neck groove 2423, when the door spindle head is pulled out, the limit pin 2211 blocks the limit head 2422, so that the front end of the door spindle head 242 is always limited in the door spindle sleeve 221, and the door sill 240 is prevented from falling off from the door spindle sleeve 221, and at the same time, the door spindle head 242, the limit neck 2421 and the limit head 2422 can rotate in the door spindle sleeve 221, so as to open and close the door sill 240; the door lock head 241 of the door sill 240 is inserted into the lock head sleeve 211, and the locking pin 250 is inserted into the through outer pin hole 2111 and the through inner pin hole 2411 to lock the door sill 240, and at this time, the distance between the limit pin 2211 and the limit head 2422 is greater than or equal to the length of the door lock head 241. When the user wants to go out, the locking pin 250 is pulled out, the door fence 240 is pushed forward, the door fence 240 moves forward relative to the armrest frame 200 until the door lock 241 is disengaged from the lock sleeve 211, and then the door fence 240 is turned over, so that the user can go out of the anti-falling rollator.

Further, the caster 110 is disposed on the base frame 100 through a load-bearing telescopic mechanism, which includes:

a fixed sliding sleeve 610 fixedly arranged on the base frame 100, wherein an end sealing plate 614 is arranged at the top of the fixed sliding sleeve 610, and a rod passing through hole 611 is formed in the center position of the end sealing plate 614;

a sliding rod 620 inserted into the through-rod hole 611, wherein a tension nut 621 is screwed to the upper end of the sliding rod 620, the radial dimension of the tension nut 621 is greater than that of the through-rod hole 611, a limit flange plate 622 is disposed at the lower part of the sliding rod 620, the lower end of the sliding rod 620 extends out from the lower end of the fixed sliding sleeve 610, and the caster 110 is disposed at the lower end of the sliding rod 620;

and the telescopic spring 630 is sleeved on the sliding rod 620, the upper end of the telescopic spring 630 abuts against the inner side of the end sealing plate 614, and the lower end of the telescopic spring 630 abuts against the limiting flange plate 622.

As shown in fig. 5 and 6, the load-bearing telescopic mechanism can play a role of reducing the degree of jolt, two ends of the telescopic spring 630 are abutted against the fixed sliding sleeve 610 and the sliding rod 620, and during the process of traveling, under the action of the telescopic spring 630, the sliding rod 620 moves up and down in the fixed sliding sleeve 610 and the through-rod through hole 611, so that the degree of jolt can be reduced. The radial dimension of the tension nut 621 is larger than that of the through-rod hole 611, so that the tension nut 621 cannot slide into the fixed sliding sleeve 610 through the through-rod hole 611, thereby ensuring that the sliding rod 620 cannot be removed.

Still further, the on-load telescopic mechanism further includes a movable sliding sleeve 640 disposed on the limiting flange plate 622, the movable sliding sleeve 640 is inserted into the fixed sliding sleeve 610 and is sleeved on the lower portions of the sliding rod 620 and the telescopic spring 630, and the movable sliding sleeve 640 is in sliding fit with the fixed sliding sleeve 610. The movable sliding sleeve 640 may serve two purposes, one is to cover the lower portion of the sliding rod 620 and the extension spring 630 for protection, and the other is to prevent the sliding rod 620 from swinging during movement by the movable sliding sleeve 640 occupying the gap between the fixed sliding sleeve 610 and the sliding rod 620.

Still further, still include elasticity U-shaped clip 650, the fixed sliding sleeve 610 upper end lateral wall is provided with a pair of relative hanging and detaining through-hole 612, the both ends of elasticity U-shaped clip 650 are buckled oppositely and are extended and insert in a pair of relative hanging and detaining through-hole 612 with fixed sliding sleeve 610 is cliped. When walking on a flat road without the need for a cushioning function of the retractable mechanism, the elastic U-shaped clip 650 may be rotated upward until the U-bottom of the elastic U-shaped clip 650 faces upward and encloses the tension nut 621, blocking the top end of the sliding rod 620, as shown in fig. 6, thereby restricting the movement of the sliding rod 620 and the tension nut 621 such that the sliding rod 620 cannot move upward.

Still further, the outer wall of the fixed sliding sleeve 610 is provided with a retaining groove 613 along the axial direction thereof, and the retaining groove 613 extends upward from the rotating hole 612 to the upper end surface of the fixed sliding sleeve 610. As shown in fig. 5, when the elastic U-shaped clip 650 is rotated upward to the vertical position, since the elastic U-shaped clip 650 has a force of clamping toward the center, both side legs of the elastic U-shaped clip 650 are sunk into the holding groove 613, so that the elastic U-shaped clip 650 is not rotated by vibration during traveling, and the slide bar 620 and the tension nut 621 can be more stably fixed.

Still further, a stopper post 120 is provided at the lower side of the base frame 100. The height of the stop column 120 is less than that of the caster 110, in the process of traveling, the stop column 120 can not contact the ground, when a rest is needed or a user suddenly fails to sit on the triangular frame hanging seat 500, the self weight of the user is applied to the multifunctional anti-falling rollator, the telescopic spring 630 is compressed, the stop column 120 contacts the ground, and at the moment, the multifunctional anti-falling rollator can be rapidly stopped and stabilized, so that the rollator is prevented from freely moving without control, and the occurrence of dangerous conditions is avoided.

Further, the caster 110 is a universal wheel. The caster 110 is a universal wheel, and can easily change the moving direction.

It should be understood that parts of the specification not set forth in detail are well within the prior art.

The above description of the preferred embodiments is intended to be illustrative, and not to be construed as limiting the scope of the utility model, which is defined by the appended claims, and all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A multi-functional fall-preventing rollator which is characterized by comprising:

the base frame (100) is surrounded by a left bottom rod (130), a front bottom rod (140) and a right bottom rod (150) to form an Contraband shape, and a plurality of casters (110) are arranged on the lower side of the base frame (100);

a plurality of pillars (300) whose lower ends are fixedly disposed on the base frame (100);

the supporting frame (200) is arranged at the upper end of the strut (300), the supporting frame (200) is surrounded by a left supporting rod (210), a rear supporting rod (230) and a right supporting rod (220) to form an Contraband shape, and two ends of the door fence (240) are respectively arranged at two ends of the supporting frame (200) to form a closed-loop frame shape with the supporting frame (200);

the lifting belt (400) comprises a left lifting belt (410), a right lifting belt (420) and a rear lifting belt (430); the lower ends of the left sling (410), the right sling (420) and the rear sling (430) are respectively connected to 3 corners of the triangular frame hanging seat (500), and the upper ends of the left sling (410), the right sling (420) and the rear sling (430) are respectively connected to a left support rod (210), a right support rod (220) and a rear support rod (230) of the handrail frame (200); leg fixing bands (510) are arranged at the positions where the triangular frame hanging seat (500) is connected with the left hanging strip (410) and the right hanging strip (420).

2. The multi-functional crash-proof rollator according to claim 1, wherein both ends of the front bottom bar (140) are extended outward to form a stabilizing bar (141), and the caster (110) is installed at the free end of the stabilizing bar (141).

3. The multi-functional fall-resistant rollator according to claim 1, wherein a waist fixing strap (431) is provided at a lower portion of the rear harness (430).

4. The multi-functional crash-proof rollator of claim 1,

the door rail (240) is an arched rod, the left end and the right end of the door rail (240) extend in a bending way, one end of the door rail forms a door lock head (241), and the other end of the door rail forms a door spindle head (242); the door lock head (241) is provided with a through inner pin hole (2411) along the radial direction of the door lock head, the end part of the door spindle head (242) continuously extends to form a limiting neck (2421), the diameter of the limiting neck (2421) is smaller than that of the door spindle head (242), the free end of the limiting neck (2421) expands to form a limiting head (2422), and an annular neck groove (2423) surrounding the limiting neck (2421) is formed between the door spindle head (242) and the limiting head (2422);

one of the front end of the left holding rod (210) and the front end of the right holding rod (220) is provided with a lock head sleeve (211), the other one is provided with a door shaft sleeve (221), the lock head sleeve (211) is provided with a through outer pin hole (2111) corresponding to the through inner pin hole (2411), and the side wall of the door shaft sleeve (221) is nailed with a limit pin (2211);

the door spindle head (242), the limiting neck (2421) and the limiting head (2422) are pivoted and inserted into the door spindle sleeve (221), and the limiting pin (2211) extends into the annular neck groove (2423); the door lock head (241) is inserted into the lock head sleeve (211), the through inner pin hole (2411) is opposite to the through outer pin hole (2111), the locking pin (250) is inserted into the through outer pin hole (2111) and the through inner pin hole (2411) to fix the door rail (240), and at the moment, the clear distance between the limiting pin (2211) and the limiting head (2422) is greater than or equal to the length of the door lock head (241).

5. The multi-functional crash-proof rollator according to any one of claims 1 to 4, wherein the caster wheels (110) are provided on the base frame (100) by a load-responsive telescopic mechanism comprising:

the fixed sliding sleeve (610) is fixedly arranged on the base frame (100), an end sealing plate (614) is arranged at the top of the fixed sliding sleeve (610), and a through rod through hole (611) is formed in the center of the end sealing plate (614);

the sliding rod (620) is inserted into the through-rod through hole (611), the upper end of the sliding rod (620) is connected with a tensioning nut (621) in a threaded mode, the radial size of the tensioning nut (621) is larger than that of the through-rod through hole (611), the lower portion of the sliding rod (620) is provided with a limiting flange plate (622), the lower end of the sliding rod (620) extends out of the lower end of the fixed sliding sleeve (610), and the caster (110) is arranged at the lower end of the sliding rod (620);

and the telescopic spring (630) is sleeved on the sliding rod (620), the upper end of the telescopic spring (630) is abutted against the inner side of the end sealing plate (614), and the lower end of the telescopic spring (630) is abutted against the limiting flange plate (622).

6. The multi-functional crash-proof rollator according to claim 5, wherein the loadable telescopic mechanism further comprises a movable sliding sleeve (640) provided on the retainer flange plate (622), the movable sliding sleeve (640) being inserted into the fixed sliding sleeve (610) and hitching the sliding rod (620) and the lower portion of the telescopic spring (630), the movable sliding sleeve (640) being slidably engaged with the fixed sliding sleeve (610).

7. The multifunctional anti-falling rollator according to claim 6, further comprising an elastic U-shaped clip (650), wherein the upper end side wall of the fixed sliding sleeve (610) is provided with a pair of opposite hanging and buckling through holes (612), and both ends of the elastic U-shaped clip (650) are bent and extended towards each other and inserted into the pair of opposite hanging and buckling through holes (612) to clamp the fixed sliding sleeve (610).

8. The multi-functional crash-proof rollator according to claim 7, wherein the outer wall of the stationary sliding sleeve (610) is provided with a retaining groove (613) along the axial direction thereof, the retaining groove (613) extending upward from the rotation hole (612) to the upper end surface of the stationary sliding sleeve (610).

9. The multi-functional crash-proof rollator according to claim 7 or 8, wherein the base frame (100) is provided with stop posts (120) at the lower side.

10. The multi-functional crash-proof rollator according to claim 1 wherein the caster wheels (110) are universal wheels.

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