阅读说明：本技术 多功能适老购物车 (Multifunctional shopping cart suitable for old people ) 是由 罗轶 于 2020-04-19 设计创作，主要内容包括：本发明公开了一种多功能适老购物车,包括助行器、购物袋、伞蓬和伞蓬支架；所述多功能适老购物车设置或不设置座椅,当其设置座椅时,还包括折叠座椅；多功能适老购物车设置或不设置微气候装置,当其设置有微气候装置时,还包括电池和风扇。使购物车既可避雨,又可遮阳,不需要专手打伞,适合老年人购物使用。本发明是适老设计,也可作为钓鱼椅、钓鱼包、写生包或野营用具使用。(The invention discloses a multifunctional shopping cart suitable for old people, which comprises a walking aid, a shopping bag, an umbrella canopy and an umbrella canopy support; the multifunctional shopping cart suitable for old people is provided with or not provided with a seat, and also comprises a folding seat when the seat is arranged; the multifunctional shopping cart is provided with or without a microclimate device, and when the microclimate device is arranged, the multifunctional shopping cart also comprises a battery and a fan. The shopping cart can avoid rain and shade sun, does not need to be held by special hands, and is suitable for old people to use for shopping. The invention is suitable for old design, and can also be used as a fishing chair, a fishing bag, a sketching bag or a camping appliance.)

1. A multifunctional shopping cart suitable for old people comprises a walking aid, a shopping bag, an umbrella awning and an umbrella awning bracket; the multifunctional shopping cart suitable for old people is provided with or not provided with a seat, and also comprises a folding seat when the seat is arranged; the multifunctional shopping cart is provided with or not provided with a microclimate device, and when the microclimate device is arranged, the multifunctional shopping cart also comprises a battery and a fan; the method is characterized in that:

the walking aid is provided with a front fork, a rear fork and handrails, the lower end of the front fork is in universal rotary connection with a front wheel, the handrails are fixedly connected or connected to the upper end of the front fork in a rotary quick-detaching manner through a center shaft, the upper end of the rear fork is fixedly connected or connected to the middle section of the front fork in a rotary quick-detaching manner, the lower end of the rear fork is connected with a rear wheel, an umbrella canopy is connected to two sides of the handrails of the walking aid in a rotary quick-detaching manner through an umbrella canopy support and the center shaft, and a shopping bag is fixedly connected to the handrails of the walking aid.

2. The multi-functional shopping cart as claimed in claim 1, wherein:

when the multifunctional shopping cart is required to be leaned on, the quick-release connection of the upper edge of the flexible chair surface is unfastened, so that the flexible chair surface is quickly detached and connected with a rigid chair surface hanging rack arranged on the leg of the walking aid, and the suspended flexible chair can be formed, and the problem that a steel pipe folding chair is easy to turn over automatically due to jolt during travelling is solved;

the walking aid is of an integrated rigid structure or a foldable structure, and when the handrail is arranged to be connected to the upper end of the front fork in a rotary quick-dismounting manner, the upper end of the rear fork can be folded in a flat manner when being connected to the middle section of the front fork in a rotary quick-dismounting manner, so that the walking aid can be conveniently carried with other vehicles;

the walking aid is provided with a rear wheel which is a common roller or a ladder climbing wheel.

3. The multi-functional shopping cart as claimed in claim 1, wherein:

the walking aid is provided with a brake, the brake comprises a traveling brake and a parking brake, the traveling brake and the parking brake are respectively controlled by a brake handle and a brake pedal, or are respectively controlled by the same brake handle which is integrally designed through different control modes, the integrally designed brake handle is connected with a handrail of the walking aid, when the brake handle is held and pressed, a brake sheet for driving a front wheel or a rear wheel temporarily brakes, and when the brake handle is released at any time, the brake state is released at any time, so that the walking brake is formed, when the brake handle is integrally rotated and pressed around the handrail of the walking aid, the brake sheet for driving the front wheel or the rear wheel keeps the brake state for a long time, and the brake state can be released only by reversely and integrally rotating the brake handle, so that the parking brake is formed, when the integrally designed brake handle is connected with the handrail of the walking aid, the parking brake is arranged to shield a shopping bag opening, the shopping bag can be opened only by turning up the parking brake, so that the shopping cart is ensured to be in a brake state when being parked to take and place articles.

4. The multi-functional shopping cart as claimed in claim 1, wherein:

when the multifunctional old-fit shopping cart is provided with the microclimate device, the battery is a portable rechargeable battery or a solar battery;

when the battery is a solar battery, the multifunctional old-adapted shopping cart is provided with a solar microclimate device, which comprises a flexible solar battery and a fan, wherein the flexible solar battery and an umbrella canopy are integrally arranged, and the fan is directly connected below an umbrella canopy support and is electrically connected with the flexible solar battery;

when the coanda effect is used for accelerating airflow, the cavity of the tubular canopy support is closed and thinner in the positive direction of the air supply and is thicker in the reverse direction, and a gap is arranged as an air outlet, when the central shaft fan sucks in the airflow, the air which is filled in the cavity of the canopy support and is accumulated to a certain degree can exceed the normal air pressure outside the cavity, so that air is formed, the cavity which is narrow at the front end and wide at the rear end can force the internal airflow to move towards a cavity which is wider at the rear end, the air which is continuously extruded mutually is finally sprayed out from a small slit, after the air is continuously operated for a period of time, the structure can gradually strengthen the air supply pressure, so that the airflow at the gap of the air outlet is quicker, the air around the air outlet frame is caused to flow along with the air supply effect, on the other hand, the air at the back of the fan is supplemented from the lower part of the canopy, and the airflow around the air outlet frame flows to form airflow circulation and various airflows are superposed, the air supply effect which is several times that of the central shaft fan is formed, and a microclimate environment is constructed under the canopy.

5. The multi-functional shopping cart as claimed in claim 1, wherein:

the multifunctional aged-adapted shopping cart is characterized in that a limit key is arranged or not arranged at the rotary connection position of an umbrella stand and a walking aid handrail, the limit key is a plane gear, a wedge block or a brace rod arranged between the umbrella stand and the stand, the limit key and the umbrella stand are movably connected by a clutch type quick-release device or a clutch type quick-release device with a reset spring and the umbrella stand;

a clutch type quick release device is a straight key spring switch, a pressing straight key switch, an outer spring key switch or an alternate locking switch, wherein the end parts of a button and a connecting rod thereof are provided with movable stop pins, the movable ends of the stop pins are arranged in a positioning slide way by elastic force, the slide way has the function similar to a cam groove, when the button is pressed down, the movable ends of the stop pins move to the lowest position along the slide way and fall into a low-position positioning point of the slide way, and the movable ends are positioned by a return spring of the button after the hand is released;

or, a clutch type quick release device is a spiral fastening device, when the spiral fastening device is screwed, the limit key and the reset spring are pressed to be mutually occluded or wedged into the gap of the canopy bracket to limit the rotation freedom degree of the canopy bracket;

the multifunctional shopping cart is provided with or not provided with a limit key at the rotary connection part of the walking aid handrail and the front fork, and the limit key is a plane gear, a wedge block or a stay bar arranged between the handrail and the front fork;

the support rod is a clamping groove limiting support rod, a clamping groove limiting telescopic rod, a hydraulic limiting telescopic rod, a rotary two-fold support rod, a pneumatic spring telescopic rod or a hook-type support rod.

Technical Field

The invention relates to a shopping cart or an umbrella for the old. In particular to a portable folding shopping cart which comprises a walking aid, a sun-rain umbrella tent and a seat.

Background

The united nations' aging report of the world population indicates that the number of people over the age of 60 in the world is expected to increase by 56% from 2015 to 2030, from 9.01 to 14 billion. By 2050, the global population of the elderly is expected to be more than doubled than that of 2015, and reaches nearly 21 hundred million. This demographic change will have profound effects:

in an aging society, more and more old people and older people have to take care of daily life by themselves, and a known shopping cart is used for dragging, and has no functions of assisting a human body to support the weight and keep walking in balance and has no function of shielding wind and rain. When the umbrella needs to be held in the rainy day and the sunny day, the umbrella is held by one hand and the trailer is unsafe for the old.

At present, no umbrella specially designed for the old is available, and the pestle-turned old is unsafe to go out in rainy days.

The known walking aid has no function of shielding wind and rain, limits the movement time interval and the movement range of the old and rehabilitation patients served by the walking aid, enables the walking aid to be used only indoors or outdoor activities with limited selection of wind and suny weather, and lacks of countermeasures once meeting weather changes.

The known pushchair is provided with a flip-fold canopy, but cannot shield both the baby and the adult. The umbrella canopy is not provided with a positioning or limiting device, and is easy to overturn under the influence of wind power when the umbrella canopy is designed to be too high.

Some of the known shopping carts or known walkers are provided with brakes, but either with no traveling brake and no parking brake, or with both traveling and parking brakes, but controlled by brake handles and brake pedals, respectively, and are not of an integrated design. The known shopping cart or the known walking aid does not have the function of reminding the user of parking, and if the user forgets to park the brake, potential safety hazards can be caused.

Some publicly known shopping carts are provided with metal framework folding stools convenient to turn over, but the metal framework folding stools are easy to turn over when the shopping carts are dragged, so that the use experience and the safety are influenced.

The known walking aid has single function and is only suitable for specific periods of specific crowds, so that the time which can be utilized in the life cycle of the walking aid is short, the walking aid is usually idle in short-term use, and the cost performance is low.

The known shopping carts or walkers are difficult to convert into wheelchairs for use.

The well-known fishing chair, fishing bag, sketching bag all do not have the outdoor function of shielding, accomodating article, seat and dolly simultaneously, do not have mosquito-proof cooling function yet.

The principle of the bladeless fan is that air is sucked from the base by the rotation of the suction fan, flows into the annular cavity at the upper part, and is then ejected from the annular gap at a high speed. At present, no case for creating a microclimate environment in outdoor product application exists.

Disclosure of Invention

In order to solve the problems, the invention discloses a multifunctional shopping cart suitable for old people.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a multifunctional shopping cart suitable for old people comprises a walking aid, a shopping bag, an umbrella awning and an umbrella awning bracket; the multifunctional shopping cart suitable for old people is provided with or not provided with a seat, and also comprises a folding seat when the seat is arranged; the multifunctional shopping cart is provided with or not provided with a microclimate device, and when the microclimate device is arranged, the multifunctional shopping cart also comprises a battery and a fan; the method is characterized in that:

the walking aid is provided with a front fork, a rear fork and a handrail. The lower end of the front fork is connected with a front wheel in a universal rotating way, and the handrail is fixedly connected with or connected with the upper end of the front fork by a middle shaft rotating type quick-release and disassembly way. The upper end of the rear fork is fixedly connected or rotationally quickly detached and connected to the middle section of the front fork, and the lower end of the rear fork is connected with the rear wheel. The umbrella canopy is connected to two sides of the handrail of the walking aid through an umbrella canopy support and a center shaft rotating type quick-release and disassembly, and the shopping bag is fixedly connected to the handrail of the walking aid.

The multifunctional aged-adapted shopping cart is characterized in that a limit key is arranged or not arranged at the rotary connection position of the canopy support and the handrail of the walking aid, the limit key is a plane gear, a wedge block or a brace rod arranged between the canopy support and the support, and the limit key and the canopy support are movably connected by a clutch type quick-release device or a clutch type quick-release device with a reset spring and the canopy support. When the clutch type quick dismounting device is separated, the limiting key is separated from the umbrella canopy support, and the umbrella canopy support can freely rotate and be mutually folded. When the clutch type quick dismounting device is mutually meshed, the limiting keys or the limiting keys and the canopy bracket are meshed to limit the rotational freedom degree of the canopy bracket.

A clutch type quick dismounting device is a straight key spring switch, a pressing straight key switch, an outer spring key switch or an alternate locking switch. The button and the end of the connecting rod are provided with movable stop pins, the movable ends of the stop pins are arranged in the positioning slide ways by means of elastic force, the slide ways play a role similar to cam grooves, when the button is pressed down, the movable ends of the stop pins move to the lowest position along the slide ways and fall into the low-position positioning points of the slide ways, and the movable ends are positioned by the reset springs of the button after hands are released. When the push button is pressed again, the movable end leaves the positioning point along the slide way of the inclined plane and returns to the high position along the return slide way under the action of the return spring. Thus, the wedge block and the reset spring are pressed down and locked through a cam control principle, and then are ejected out according to the spring once again to press or release the wedge block and the reset spring.

Or, the clutch type quick dismounting device is a spiral fastening device, when the spiral fastening device is screwed, the limit key and the reset spring are pressed to be mutually occluded or wedged into a gap of the canopy support to limit the rotation freedom degree of the canopy support. When the spiral fastening device is unscrewed, the limit key is popped out by the reset spring, so that the canopy supports can be mutually rotated and folded.

The multifunctional shopping cart suitable for old people is provided with or not provided with a limit key at the rotary connection part of the handrail of the walking aid and the front fork, and the limit key is a plane gear, a wedge block or a stay bar arranged between the handrail and the front fork.

Preferably, the stay bar is a quick-release folding stay bar.

A quick-release folding stay bar is a clamping groove limiting stay bar, and the structure of the quick-release folding stay bar is similar to that of a window clamping groove limiting stay bar. The clamping groove is arranged inside or outside the front fork, one end of the support rod is connected with the handrail of the walking aid, and the other end of the support rod is connected with the front fork through the clamping groove. When folded, the stay bar slides in the clamping groove and is parallel to the clamping groove. When the walking aid is unfolded, the supporting rods slide in the clamping grooves and are supported at an angle with the clamping grooves, and the sliding freedom degree of the clamping rods is limited by the clamping pieces of the clamping grooves, so that the rotation freedom degree of the handrails of the walking aid is limited.

Or, the quick-release folding support rod is a clamping groove limiting telescopic rod, and the structure of the quick-release folding support rod is similar to that of a telescopic window limiter.

Or, the quick-release folding support rod is a hydraulic limiting telescopic rod, and the structure of the quick-release folding support rod is similar to that of a cabinet hydraulic rod.

Or, the quick-release folding stay bar is a rotary two-folding stay bar, and the structure of the quick-release folding stay bar is similar to that of a two-folding support frame of a window.

Or the quick-release folding support rod is a pneumatic spring telescopic rod, and the structure of the quick-release folding support rod is similar to an upturned door air support or a pneumatic spring telescopic rod.

Alternatively, a quick release folding stay is a hook-type stay, the structure of which is similar to a window catch.

When the multifunctional old-fit shopping cart is provided with the seat, the structure is a steel pipe and flexible seat structure with a traditional structure, or the lower side of the flexible seat is fixedly connected to the lower part of the back of the shopping bag, and the upper side of the flexible seat is quickly disassembled and connected to the upper part of the back of the shopping bag. When the user needs to lean on the chair, the quick-dismantling connection on the flexible chair surface is disconnected, so that the flexible chair surface is quickly dismantled and connected with the rigid chair surface hanging rack arranged on the leg of the walking aid, a suspended flexible chair can be formed, and the problem that the steel pipe folding chair is easy to turn over automatically due to jolt during travelling is solved.

The walking aid is an integrated rigid structure or a foldable structure, and when the handrail is arranged, the handrail can be rotationally, quickly and detachably connected to the upper end of the front fork. When the rotary quick-dismounting connection at the upper end of the rear fork is arranged at the middle section of the front fork, the rear fork can be folded in a flat mode and is convenient to carry along with other vehicles.

The walking aid is provided with a rear wheel which is a common roller or a ladder climbing wheel.

The walking aid is provided with a brake, the brake comprises a traveling brake and a parking brake, and the traveling brake and the parking brake are respectively controlled by a brake handle and a brake pedal or are respectively controlled by the same brake handle in an integrated design in different control modes. An integrally designed brake handle is connected with a handrail of a walking aid, when the handle of the brake handle is held and pressed, a brake pad for driving a front wheel or a rear wheel temporarily brakes, and when the handle is released at any time, the brake state is released at any time, so that the walking brake is formed. When the brake handle is integrally rotated and pressed around the handrail of the walking aid, the brake sheet for driving the front wheel or the rear wheel keeps the braking state for a long time, and the braking state can be released only by reversely and integrally rotating the brake handle, so that the parking brake is formed. When the integrally designed brake handle is connected to the handrail of the walking aid, the parking brake is arranged to shield the shopping bag opening, and the shopping bag can be opened only by turning up the parking brake, so that the shopping cart is ensured to be in a braking state when being parked to take and place articles, and the old people can use the shopping bag more safely.

When the rotary fan-shaped umbrella canopy support is unfolded and shielded on the walking aid, the multifunctional shopping cart suitable for the old becomes an umbrella suitable for the old, the shopping bag connected with the handrail can shield wind and rain in front, and the walking aid enables the old to be safer in a rainy wet and slippery environment.

When the multifunctional old-fit shopping cart unfolds the seat and does not use a parking brake, the multifunctional old-fit shopping cart can be used as a wheelchair.

When the rotary canopy shields and simultaneously unfolds the seat and stops the brake, the multifunctional old shopping cart can be used as a fishing chair, a fishing bag, a sketching bag or a camping appliance, and the wider market is favorable for reducing the product selling price and the burden of the old.

Furthermore, in order to increase the comfort level of outdoor use, the multifunctional old shopping cart is provided with a microclimate device, and the microclimate device comprises a battery and a fan, wherein the battery is a portable rechargeable battery or a solar battery.

When the battery is a solar battery, the multifunctional old-adapted shopping cart is provided with a solar microclimate device, and comprises a flexible solar battery and a fan, wherein the flexible solar battery and an umbrella canopy are integrally arranged, and the fan is directly connected below an umbrella canopy support and is electrically connected with the flexible solar battery. Alternatively, a fan is arranged in the central shaft and is in air flow connection with the tubular canopy support, the canopy support at the edge of the canopy is provided with slits, and when the fan sucks air from the environment, the air enters the cavity of the tubular canopy support and is ejected from the slits or is ejected from the slits at an increased speed by utilizing the Coanda Effect.

When the coanda effect is used to accelerate airflow, the cavity provided with the tubular canopy support is closed and thinner towards the positive direction of air supply, and is thicker towards the negative direction and is provided with a gap as an air outlet. When the central shaft fan sucks air flow, the air flow is filled in the cavity of the canopy support, and the air flow is accumulated to a certain degree and exceeds the normal air pressure outside the cavity, so that wind is formed. And the narrow rear end of front end broad cavity can force inside air current to move towards the more broad cavity in rear end, and the air of continuous mutual extrusion is spout from tiny slit at last, and after lasting operation a period, this kind of structure can strengthen air supply pressure gradually, makes the air current in air outlet gap faster gradually, and the effect of blowing that forms arouses that the air that goes out around the fan frame also follows and flows. On the other hand, air on the back of the fan is supplemented from the lower part of the canopy and flows with air on the periphery of the air outlet frame to form airflow circulation, various airflows are superposed to form an air supply effect which is multiple times that of the central axis fan, a microclimate environment is constructed under the canopy, and the purposes of preventing mosquitoes and reducing temperature are achieved.

The multifunctional shopping cart suitable for old people is at least provided with one or more than one structure.

The invention has the beneficial effects that:

the multifunctional shopping cart suitable for the old can shield rain and sun, does not need to be specially used for holding an umbrella, and is suitable for the old to shop. The shopping cart is provided with the flexible folding seat, is light and comfortable, and the folding seat does not hinder the shopping cart from being pushed or dragged.

The invention can be used as a walking aid to guide the old or rehabilitation patients to do outdoor activities and go out for exercise under more various weather conditions, and help to keep fit or rehabilitate.

The invention designs the parking brake to shield the shopping bag opening, and the shopping bag can be opened only by turning up the parking brake to work, so that the shopping bag is safer to use.

The invention can be converted into a wheelchair for use.

The invention is suitable for old design, but has the functions of outdoor shielding, article storage, seats and the like, can be conveniently carried along with an automobile, and an advanced version is also provided with an airflow circulating device to build a microclimate environment to prevent mosquitoes and reduce temperature. Therefore, the fishing rod can be used as a fishing chair, a fishing bag, a sketching bag or a camping tool, has larger market and more audiences, and is beneficial to amortizing the cost, reducing the selling price and reducing the burden of the old after virtuous circle is formed. The product can be fully utilized in the life cycle, and resources are saved.

Description of the drawings;

the invention is further illustrated with reference to the following figures and examples.

FIG. 1a is a schematic view of the canopy of the present invention in its expanded configuration, and FIG. 1b is a schematic view of the canopy of the present invention in its use during walking;

fig. 2a is a schematic view showing a folded structure of the canopy of the present invention, fig. 2b is a schematic view showing a seat unfolded,

fig. 3a is a schematic view of a strut reinforcement structure of the present invention, fig. 3b is a schematic view of a fully collapsed structure of the present invention,

FIG. 4 is a schematic view of the present invention used as a fishing chair, fishing bag, sketching bag or camping gear,

FIG. 5 is a schematic view of the microclimate setting device, and FIG. 5a is a schematic view of a central axis fan structure and a limit key structure; FIG. 5b is a schematic view of a tubular canopy support utilizing the coanda effect;

in the figure: 1. the walking aid 2, the shopping bag 3, the umbrella canopy 4, the umbrella canopy support 5, the seat 6, the battery 7, the fan 8, the front fork 9, the rear fork 10, the handrail 11 and the middle shaft

12. A limit key 13, a plane gear 14, a brace rod 15, a straight key spring switch 16, a spiral fastening device 17, a rigid chair surface hanging rack 18, a traveling brake 19, a parking brake 20, a solar battery 21, a central shaft fan 22, a tubular canopy support 23, a gap

The specific implementation mode is as follows:

as shown in fig. 1-5: in the embodiment, the multifunctional shopping cart suitable for the old comprises a walking aid 1, a shopping bag 2, an umbrella awning 3 and an umbrella awning bracket 4;

in the embodiment, the multifunctional suitable shopping cart is not provided with the seat 5,

alternatively, in another embodiment, the multi-functional aged-adapted shopping cart is provided with a folding seat 5,

in the embodiment, the multifunctional suitable shopping cart is not provided with a microclimate device,

or, in another embodiment, the multifunctional old-fit shopping cart is provided with a microclimate device and further comprises a battery 6 and a fan 7;

in an embodiment, the aid 1 is provided with front forks 8, rear forks 9 and handrails 10. The lower end of the front fork 8 is connected with a front wheel in a universal rotating way, and the handrail 10 is fixedly connected with or connected with the upper end of the front fork 8 through a middle shaft 11 in a rotary quick-release and disassembling way. The upper end of the rear fork 9 is fixedly connected or rotationally and quickly detached to be connected with the middle section of the front fork 8, and the lower end of the rear fork 9 is connected with a rear wheel. The umbrella canopy 3 is connected with the two sides of the handrail 10 of the walking aid 1 through the umbrella canopy support 4 and the middle shaft 11 in a rotary type quick-release and disassembly mode, and the shopping bag 2 is fixedly connected with the handrail 10 of the walking aid 1.

In the embodiment, the multifunctional aged-adapted shopping cart is provided with a limit key 12 at the rotary connection part of the canopy support 4 and the handrail 10 of the walking aid 1, the limit key 12 is a plane gear 13, a wedge block or a support rod 14 arranged between the canopy support 4 and the support, and the limit key 12 is movably connected with the canopy support 4 through a clutch type quick-release device or a clutch type quick-release device with a reset spring is movably connected with the canopy support 4. When the clutch type quick dismounting device is separated, the limit key 12 is separated from the canopy support 4, and the canopy support 4 can be freely rotated and mutually folded. When the clutch type quick dismounting device is mutually meshed, the limiting keys 12 or the limiting keys 12 and the canopy support 4 are meshed to limit the rotational freedom degree of the canopy support 4.

In one embodiment, the quick release device is a straight key spring switch 15, a push-straight key switch, an outer spring push-button switch, or an alternate capture switch. The button and the end of the connecting rod are provided with movable stop pins, the movable ends of the stop pins are arranged in the positioning slide ways by means of elastic force, the slide ways play a role similar to cam grooves, when the button is pressed down, the movable ends of the stop pins move to the lowest position along the slide ways and fall into the low-position positioning points of the slide ways, and the movable ends are positioned by the reset springs of the button after hands are released. When the push button is pressed again, the movable end leaves the positioning point along the slide way of the inclined plane and returns to the high position along the return slide way under the action of the return spring. Thus, the wedge block and the reset spring are pressed down and locked through a cam control principle, and then are ejected out according to the spring once again to press or release the wedge block and the reset spring. For the convenience of understanding, the straight key spring switch 15, the pressing straight key switch, the outer spring key switch or the alternate locking switch can refer to ball-point pen keys, self-elastic TF card seats, SD card seats, some SIM card seats of mobile phones, power switches of televisions and other product structures.

Alternatively, in another embodiment, a clutch type quick release device is a screw fastening device 16, when the screw fastening device 16 is screwed, the limit key 12 and the return spring are pressed to be engaged with each other, or wedged into the gap of the canopy frame 4, so as to limit the degree of freedom of rotation. When the screw fastening device 16 is unscrewed, the limit key 12 is ejected by the reset spring, so that the canopy supports 4 can be mutually rotated and folded.

In the embodiment, the multifunctional aged-adapted shopping cart is a rigid structure integrally designed with the armrest 10 and the front fork 8 of the walking aid 1, and the strength is ensured to be prior.

Alternatively, in another embodiment, the multi-functional shopping cart is provided with a limit key 12 at the rotational connection of the handle 10 and the front fork 8 of the walker 1, the limit key 12 being a face gear 13, wedge or stay 14 provided between the handle 10 and the front fork 8.

In the embodiment, the multifunctional shopping cart is provided with a clamping groove limiting support rod 14 between the handrail 10 and the front fork 8 of the walking aid 1, and the structure of the multifunctional shopping cart is similar to that of the window clamping groove limiting support rod 14. The clamping groove is arranged inside or outside the front fork 8, one end of the support rod 14 is connected with the handrail 10 of the walking aid 1, and the other end is connected with the front fork 8 through the clamping groove. The struts 14 slide within the pockets parallel to the pockets when folded. When unfolded, the support rods 14 slide in the clamping grooves and are supported at an angle with the clamping grooves, and the sliding freedom degree of the clamping grooves is limited by the clamping pieces of the clamping grooves, so that the rotation freedom degree of the handrails 10 of the walking aid 1 is limited.

Alternatively, in another embodiment, the multifunctional shopping cart is provided with a slot limiting telescopic rod between the handrail 10 and the front fork 8 of the walking aid 1, and the structure of the multifunctional shopping cart is similar to that of a telescopic window limiter.

Alternatively, in another embodiment, the multifunctional shopping cart is provided with a hydraulic limit telescopic rod between the handrail 10 and the front fork 8 of the walking aid 1, and the structure of the multifunctional shopping cart is similar to a cabinet hydraulic rod.

Alternatively, in another embodiment, the multi-functional shopping cart is provided with a rotary two-fold support rod 14 between the handle 10 and the front fork 8 of the walking aid 1, and the structure of the multi-functional shopping cart is similar to that of a window two-fold support frame.

Alternatively, in another embodiment, the multifunctional shopping cart is provided with a pneumatic spring telescopic rod between the handrail 10 and the front fork 8 of the walking aid 1, and the structure of the multifunctional shopping cart is similar to an upturned door air support or a pneumatic spring telescopic rod.

Alternatively, in another embodiment, the multi-functional shopping cart is provided with a hooked brace 14 between the armrest 10 and the front fork 8 of the walker 1, which is configured like a window catch.

In the embodiment, when the multifunctional aged shopping cart is provided with the seat 5, the structure is a steel pipe and a flexible seat surface of a traditional structure, or in another embodiment, the multifunctional aged shopping cart is provided with a flexible seat surface between the handrail 10 and the front fork 8 of the walking aid 1, the lower side of the flexible seat surface is fixedly connected to the lower part of the back surface of the shopping bag 2, and the upper side of the flexible seat surface is quickly detached and connected to the upper part of the back surface of the shopping bag 2. When the user needs to lean on the chair, the quick-release connection on the flexible chair surface is unfastened, so that the flexible chair surface is quickly and detachably connected with the rigid chair surface hanging rack 17 arranged on the leg part of the walking aid 1, the suspension type flexible chair 5 can be formed, and the problem that the steel pipe folding chair is easy to turn over automatically due to bumping during traveling is solved.

The walking aid 1 is of an integral rigid or foldable structure, and when the handrails 10 are arranged, the rotational quick-release connection is arranged at the upper end of the front fork 8. When the upper end of the rear fork 9 is connected with the middle section of the front fork 8 in a rotary quick-release manner, the rear fork can be folded in a flat manner, and is convenient to carry along with other vehicles.

In the embodiment, the walking aid 1 is provided with universal wheels as the front wheels and common rollers or ladder climbing wheels as the rear wheels.

In an embodiment the walking aid 1 is provided with brakes comprising a travel brake 18 and a parking brake 19, the travel brake 18 and the parking brake 19 being controlled by a brake handle and a brake pedal, respectively, or in another embodiment by the same brake handle being integrally designed and controlled by different operating means. An integrally designed brake handle is connected to the armrest 10 of the walking aid 1, when the handle of the brake handle is held and pressed, the brake pad which drives the front wheel or the rear wheel is temporarily braked, and when the handle is released at any time, the brake state is released at any time, so that the walking brake 18 is formed. When the brake handle is integrally rotated and pressed around the handrail 10 of the walking aid 1, the brake sheet for driving the front wheel or the rear wheel keeps the braking state for a long time, and the brake handle is integrally rotated reversely to release the braking state, so that the parking brake 19 is formed. When the integrally designed brake handle is connected to the handrail 10 of the walking aid 1, the parking brake 19 is arranged to shield the opening of the shopping bag, and the shopping bag can be opened only by turning up the parking brake 19 to work, so that the shopping cart is ensured to be in a braking state when being parked to take and place articles, and the old can use the shopping bag more safely.

In the embodiment, when the rotary fan-shaped canopy support 4 is unfolded and shielded on the walking aid 1, the multifunctional shopping cart suitable for old people becomes a umbrella suitable for old people, the shopping bag 2 connected with the handrail 10 can shield the wind and rain in front, and the walking aid 1 makes the old people safer in the wet and slippery environment in rain.

In an embodiment, the multi-function elderly shopping cart may be used as a wheelchair when the multi-function elderly shopping cart deploys the seat 5 and the parking brake 19 is not used.

In the embodiment, when the rotary canopy 3 shields and simultaneously expands the seat 5 and the parking brake 19, the multifunctional old-adapted shopping cart can be used as a fishing chair, a fishing bag, a sketching bag or a camping tool, so that the market is wider, the product selling price is favorably reduced, and the burden of old people is reduced.

Further, in another embodiment, in order to increase the comfort of outdoor use, the multifunctional aged shopping cart is provided with a microclimate device, wherein the microclimate device comprises a battery 6 and a fan 7, and the battery 6 is a portable rechargeable battery 6 or a solar battery 20.

When the battery 6 is a solar battery 20, the multifunctional old-adapted shopping cart is provided with a solar microclimate device, and comprises a flexible solar battery 20 and a fan 7, wherein the flexible solar battery 20 and an umbrella canopy 3 are integrally arranged, and the fan 7 is directly connected below an umbrella canopy support 4 and is electrically connected with the flexible solar battery 20. Alternatively, a central shaft fan 21 is arranged on the central shaft 11 and is in air flow connection with the tubular canopy support 22, the canopy support 22 at the edge of the canopy 3 is provided with a slit 23, and when the central shaft fan 21 sucks air from the environment, the air enters the cavity of the tubular canopy support 22 and is ejected from the slit 23 or is ejected from the slit 23 at an increased speed by using Coanda Effect.

When the coanda effect is used to accelerate the airflow, the cavity provided with the tubular canopy support 22 is closed and thinner in the forward direction of the air supply and is thicker in the reverse direction and provided with a gap 23 as an air outlet. When the central shaft fan 21 sucks in air flow, the air flow fills the cavity of the tubular canopy support 22, and the air flow accumulated to a certain degree exceeds the normal air pressure outside the cavity, so that wind is formed. And the narrow rear end of front end broad cavity can force inside air current to move towards the more broad cavity in rear end, and the air of constantly mutual extrusion is spout from tiny slit at last, and after lasting operation a period, this kind of structure can strengthen air supply pressure gradually, makes the air current of air outlet gap 23 faster gradually, and the effect of blowing that forms arouses that the air that goes out around the fan frame also follows and flows. On the other hand, the air on the back of the central shaft fan 21 is supplemented from the lower part of the canopy 3 and flows with the air on the periphery of the air outlet frame to form airflow circulation, various airflows are overlapped to form an air supply effect which is several times that of the central shaft fan 21, a microclimate environment is constructed under the canopy 3, and the purposes of preventing mosquitoes and reducing temperature are achieved.

The multifunctional shopping cart suitable for old people is at least provided with one or more than one structure.

The above embodiments are for understanding the method and core idea of the present invention, and it will be apparent to those skilled in the art that any possible changes or substitutions may be made without departing from the spirit of the present invention, and the scope of the present invention is covered thereby.