CN113425560A

CN113425560A - Fan-shaped folding miniature obstacle-crossing walking aid

Info

Publication number: CN113425560A
Application number: CN202110667407.XA
Authority: CN
Inventors: 喻洪流; 王路帮; 喻雪琴; 陈奕希; 孟巧玲; 梁香飞
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-09-24

Abstract

The invention discloses a fan-shaped folding miniature obstacle crossing walking aid, which comprises a battery quick-dismantling rod, armrests, a front supporting rod, a U-shaped supporting frame, a cam-spring combined device, obstacle crossing front wheels, rear wheels, a seat module and a telescopic supporting rod, wherein the battery quick-dismantling rod is connected with the armrests; the handrail, the front supporting rod and the U-shaped supporting frame are connected to two ends of the battery quick-release rod, and the cam spring combination device is arranged at the connection position; the front wheels are connected to the front supporting rod, the rear wheels are connected to the U-shaped supporting frame, the seat module is connected with the armrests through the telescopic supporting rods, and the seat module is further connected to the front supporting rod and the U-shaped supporting frame; the cam spring combination device can be locked and released, and when the cam spring combination device is released, the handrail, the front support rod and the U-shaped support rod can rotate by taking the battery quick-release rod as a rotating shaft, so that the miniature obstacle crossing walking aid is opened or folded; when locked, the walker is allowed to remain in the current state. The invention adopts various mechanisms, so that the walking aid occupies small space after being folded, and is convenient to carry and use during traveling.

Description

Fan-shaped folding miniature obstacle-crossing walking aid

Technical Field

The invention relates to the technical field of walking aids, in particular to a fan-shaped folding miniature obstacle crossing walking aid.

Background

Compared with the research and design of the walking aid in China, the research and design of the walking aid in China are late, along with the gradual increase of aging degree, scientific research personnel in China have to pay attention to the requirements of old people and walking aid appliances, and from the former walking stick to the current walking aid, wheelchair and the like, along with the continuous development of science and technology, the society continuously progresses, and the old people put forward higher requirements on the walking aid appliances. However, the conventional walking aid in the market has a single function, such as the height of the walking aid cannot be adjusted according to the needs of users, the walking aid cannot be folded, the walking aid has a large volume and is difficult to get over obstacles, so that the walking aid cannot meet the needs of most of the old.

Therefore, the technical personnel in the field are dedicated to developing a fan-shaped folding miniature obstacle crossing walking aid, and various mechanisms are adopted, so that the walking aid occupies small space after being folded, and is convenient to carry and use during traveling.

Disclosure of Invention

In order to achieve the purpose, the invention provides a fan-shaped folding miniature obstacle crossing walking aid, which comprises a battery quick-dismantling rod, a pair of handrails, a pair of front supporting rods, a U-shaped supporting frame, a pair of cam spring combination devices, a pair of obstacle crossing front wheels, a pair of rear wheels, a seat module and a pair of telescopic supporting rods; the battery quick-release rod is provided with a first end and a second end which are oppositely arranged; one ends of the pair of armrests are connected to the first end and the second end of the battery quick release rod respectively; one ends of the pair of front support rods are respectively connected to the first end and the second end of the battery quick-release rod; two sides of a U-shaped opening of the U-shaped support frame are respectively connected to the first end and the second end of the battery quick-release rod; the pair of cam spring combination devices are respectively arranged at the connecting positions of the handrail, the front supporting rod and the U-shaped supporting frame; the pair of obstacle-crossing front wheels are respectively connected to the other end of the corresponding front supporting rod, and the pair of rear wheels are respectively connected to two sides of the U-shaped bottom of the U-shaped supporting frame; one side of the seat module is rotatably connected to the pair of front support rods, and the other side of the seat module is detachably connected to two side walls of the U-shaped support frame; the pair of telescopic supporting rods are respectively and rotatably connected to the corresponding armrests and the corresponding seat modules;

wherein the cam spring assembly is configured to be locked and unlocked, and when the cam spring assembly is unlocked, the armrest, the front support bar and the U-shaped support bar can rotate around the battery quick release bar as a rotating shaft, so as to open or fold the miniature obstacle crossing walker; when the cam spring assembly is locked, the armrest, the front support bar and the U-shaped support frame remain stationary.

Further, the cam spring combination device comprises a rotating handle, a first transverse stopping piece, a semi-cylindrical cam mechanism, a rotary disc, a dust cover, a cam shaft, a spiral spring and a linear ball bearing which are sequentially connected along the axial direction, and the cam spring combination device is configured to enable the semi-cylindrical cam mechanism to work after the rotating handle is rotated, so that the rotary disc and the cam shaft are driven to rotate, the spiral spring is extruded, the linear ball bearing is enabled to move, and therefore the cam spring combination device is controlled to be clamped or loosened.

Further, the handrail includes hanging roof beam and brake lever, the one end of hanging the roof beam is connected to battery quick detach pole, brake lever sets up the other end of hanging the roof beam.

Further, the seat module includes a seat plate and a limit knob, the limit knob being connected to the front support bar, the seat plate being connected to the limit knob; the limiting knob comprises a slot, a fixed disc and a locking piece, the slot, the fixed disc and the locking piece are sequentially connected in the axial direction, and a gap is formed between the slot and the fixed disc; the locking piece is configured to lock or unlock the limit knob.

Further, the front support bar includes a plurality of elliptical grooves arranged along a length direction thereof, and the limit knob is fitted to one of the plurality of elliptical grooves.

Further, the telescopic supporting rod comprises a fixing rod and a telescopic rod, the telescopic rod is inserted into the fixing rod and can move along the fixing rod in a telescopic mode, one end of the fixing rod is connected to the seat module through a D-shaped knob, and one end of the telescopic rod is connected to the cantilever beam of the armrest through a D-shaped knob.

Furthermore, the obstacle crossing front wheel comprises a blade wheel frame and three small wheels, the three small wheels are connected to the blade wheel frame, the three small wheels are distributed in a triangular mode, and a self-locking switch is arranged in each small wheel.

Further, the obstacle crossing front wheel is connected to the front support bar by a quick release multi-leaf spring device configured to be capable of being clamped and unclamped, thereby enabling adjustment of the position of the obstacle crossing front wheel.

Furthermore, the quick-release multi-piece spring device comprises a shaft head, a half shaft, a second transverse stopping piece, a connecting device and a multi-piece spring, wherein one end of the shaft head is connected with the front supporting rod, and the other end of the shaft head is connected with the obstacle crossing front wheel; the quick release multi-piece spring device is configured to control the left and right movement of the half shafts on two sides through the multi-piece spring, so as to control the clamping and the loosening of the quick release multi-piece spring device.

Further, battery quick detach pole includes battery quick detach mechanism, battery quick detach mechanism is including carrying knot, battery case and buckle, carry the knot with the buckle sets up on the battery case.

The fan-shaped folding micro walking aid provided by the invention has the following technical effects: by adopting various mechanisms, the folding walking aid occupies small space after being folded, and is convenient to carry and use during travel.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic view of the miniature obstacle crossing walker of the present invention in an open configuration;

FIG. 2 is a schematic view of the miniature obstacle crossing walker in a folded configuration;

FIG. 3 is an enlarged fragmentary schematic view of FIG. 1 showing the connection of the armrests, seat module and telescoping support rods;

FIG. 4 is an exploded view of the cam spring assembly;

FIG. 5 is a schematic structural view of the front support bar;

FIG. 6 is a schematic view of the spacing knob;

FIG. 7 is a schematic view of a quick release lever for a battery;

FIG. 8 is a schematic view of the construction of an obstacle crossing front wheel;

FIG. 9 is a schematic view of the connection of the front obstacle crossing wheel to the front support bar;

fig. 10 is an exploded view of the quick release multi-leaf spring device.

Wherein, 10-a battery quick-release rod, 11-a carrying buckle, 12-a battery box, 13-a buckle, 20-an armrest, 21-a brake handle, 22-a suspension beam, 30-a front support rod, 31-an arc groove, 32-a first elliptical groove, 33-a second elliptical groove, 34-a third elliptical groove, 40-a U-shaped support frame, 50-a cam spring combination device, 51-a rotating handle, 52-a first transverse stop sheet, 53-a semi-cylindrical cam mechanism, 54-a rotating disc, 55-a dust cover, 56-a cam shaft, 57-a spiral spring, 58-a linear ball bearing, 60-an obstacle-crossing front wheel, 61-a small wheel, 62-a wheel frame, 63-a self-locking switch, 610-a quick-release multi-sheet spring device, 611-a shaft head, 612-half shaft, 613-second transverse stop piece, 614-connecting device, 615-multi-piece spring, 70-rear wheel, 80-seat module, 81-seat plate, 82-limit knob, 83-locking piece, 84-fixed disk, 85-slot, 90-telescopic supporting rod, 91-telescopic rod, 92-fixed rod and 93-D type knob.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

As shown in FIG. 1, the invention provides a fan-shaped folding miniature obstacle crossing walking aid, which comprises a battery quick-release rod 10, a pair of armrests 20, a pair of front supporting rods 30, a U-shaped supporting frame 40, a pair of cam spring combination devices 50, a pair of obstacle crossing front wheels 60, a pair of rear wheels 70, a seat module 80 and a pair of telescopic supporting rods 90. The battery quick release lever 10 has opposite first and second ends. One end of one armrest 20 is rotatably connected to a first end of the battery quick release lever 10, and one end of the other armrest 20 is rotatably connected to a second end of the battery quick release lever 10. One end of one front support rod 30 is rotatably connected to a first end of the battery quick release lever 10, and one end of the other front support rod 30 is rotatably connected to a second end of the battery quick release lever 10. Two sides of the U-shaped opening of the U-shaped support bracket 40 are rotatably connected to the first end and the second end of the battery quick release lever 10, respectively. A pair of obstacle crossing front wheels 60 are respectively connected to the other ends of the corresponding front support bars 30, and a pair of rear wheels 70 are respectively connected to both sides of the U-shaped bottom of the U-shaped support 40. The seat module 80 has one side rotatably connected to the pair of front support bars 30 and the other side detachably connected to both side walls of the U-shaped support frame 40. One end of a telescopic support rod 90 is rotatably connected to one armrest 20 and the other end is rotatably connected to one side of the seat module 80; one end of the other telescopic support rod 90 is rotatably connected to the other armrest 20, and the other end is rotatably connected to the other side of the seat module 80. The cam spring combination devices 50 are respectively arranged at two ends of the battery quick release rod 10 and are connected to the joints of the front support rod 30, the side wall of the U-shaped support frame 40 and the armrest 20.

The cam spring assembly 50 has a locking function so that the miniature obstacle crossing walker has two states: an open state and a folded state. When the cam spring combination device 50 is in a released state, the armrest 20, the front support rod 30 and the U-shaped support 40 can rotate by taking the battery quick-release rod 10 as a rotating shaft, so that the miniature obstacle crossing walking aid is folded, the obstacle crossing walking aid is changed into a folded state from an opened state, and then the cam spring combination device 50 is locked, so that the obstacle crossing walking aid is kept in the folded state; alternatively, the armrest 20, the front support bar 30, and the U-shaped support 40 are changed from the folded state to the unfolded state, and then maintained in the unfolded state after the cam-spring assembly 50 is locked.

In the opened state, the front support rod 30, the U-shaped support 40 and the armrest 20 are sequentially arranged, an included angle is formed between the front support rod 30 and the U-shaped support 40, and an included angle is formed between the U-shaped support 40 and the armrest 20. The seat module 80 can rotate about the front support bar 30 to a substantially flat position between the front support bar 30 and the U-shaped support 40 to facilitate the resting of the user. The telescoping support rod 90 is supported between the armrest 20 and the seat module 80 to facilitate maintaining the armrest 20 in the open position. The cam spring assembly 50 is operated to be loosened, then the front support rod 30, the U-shaped support frame 40 and the handrail 20 can be rotated to reduce the angle among the three and change the three into a folded state, at the moment, the position of the obstacle crossing front wheel 60 can be adjusted, and the volume of the miniature obstacle crossing walking aid in the folded state is further reduced.

The cam spring assembly 50 includes a rotary handle 51, a first transverse stopper piece 52, a semi-cylindrical cam mechanism 53, a turntable 54, a dust cover 55, a cam shaft 56, a coil spring 57 and a linear ball bearing 58, which are connected in series along the axial direction of the cam spring assembly 50. By manually operating the rotary handle 51, the semi-cylindrical cam mechanism 53 is actuated to rotate the turntable 54 and the cam shaft 56, thereby compressing the coil spring 57 and moving the linear ball bearing 58 in the axial direction thereof, thereby controlling the clamping and unclamping of the cam spring assembly 50.

The armrest 20 includes a suspension beam 22 and a brake handle 21, and the brake handle 21 is disposed at one end of the suspension beam 22 for a user to hold and perform a braking function, thereby preventing a dangerous situation. The shape of the brake handle 21 can adopt a bionic engineering design, so that when a user holds the brake handle 21, the user feels like holding hands of other people, and the safety feeling can be provided for the user to a certain extent. The other end of the suspension beam 22 is connected to the battery quick release lever 10.

The seat module 80 includes a seat plate 81 and a limit knob 82, and the seat plate 81 is connected to the front support bar 30 by the limit knob 82. The spacing knob 82 is released to allow the seat plate 81 to be folded or unfolded with respect to the front support bar 30. In some embodiments, the front support bar 30 includes a circular arc groove 31, a plurality of elliptical grooves, the circular arc groove 31 is provided at an end of the front support bar 30 for connection with the battery quick release bar 10; the plurality of elliptical grooves are arranged along the length direction of the front support rod 30 and run through the thickness direction of the front support rod 30, the limit knob 82 is arranged on one of the elliptical grooves, the height of the seat module 80 can be adjusted by arranging the limit knob 82 in different elliptical grooves, and then the height of the armrest 20 is adjusted, so that the armrest is suitable for users with different heights. Preferably, three elliptical grooves are provided, namely, a first elliptical groove 32, a second elliptical groove 33 and a third elliptical groove 34 in this order from top to bottom. The limit knob 82 is installed in the elliptical groove and comprises a slot 85, a fixed disk 84 and a locking piece 83, the slot 85, the fixed disk 84 and the locking piece 83 are sequentially arranged along the axial direction of the limit knob 82, a gap is reserved between the slot 85 and the fixed disk 84 and can be clamped into the side wall of the elliptical groove, and the locking piece 83 is used for locking the limit knob 82 at the position of the elliptical groove. Correspondingly, a supporting part and a through hole corresponding to the supporting part are arranged at the joint of the seat plate 81 and the side wall of the U-shaped supporting frame 40, so that the seat plate 81 is connected to the side wall of the U-shaped supporting frame 40 through the supporting part, the through hole corresponds to the elliptical groove of the front supporting rod 30, after the height of the seat plate 81 is adjusted, the seat plate is locked on one elliptical groove of the front supporting rod 30, and the supporting part also falls into the corresponding through hole of the side wall of the U-shaped supporting frame 40.

The telescopic supporting rod 90 includes a fixing rod 92 and a telescopic rod 91, the telescopic rod 91 can be inserted into the fixing rod 92 to move telescopically along the fixing rod 92, and two ends of the telescopic supporting rod 90 are respectively connected to the suspension beam 22 of the armrest 20 and the seat module 80 by using a D-shaped knob 93. The D-shaped knob 93 allows the armrest 20 and the telescopic support rod 90 to rotate relative to each other, and when the D-shaped knob 93 is released, the armrest 20 and the telescopic support rod 90 can rotate to be folded or unfolded. Similarly, the telescopic support rod 90 and the seat module 80 can be folded or unfolded by rotating the D-shaped knob 93.

The battery quick-release rod 10 can be used as a rotating shaft center when the walking aid is folded, and can be provided with a battery, and the battery can be quickly replaced, so that the space is saved. Be provided with battery quick detach mechanism on battery quick detach pole 10, battery quick detach mechanism is including carrying and detain 11, battery case 12 and buckle 13, and the buckle 11 and buckle 13 setting are carried on battery case 12 to the carrying, and battery case 12 is used for installing the battery, and buckle 13 fixes battery case 12 on battery quick detach pole 10, through carrying and detaining 11, can conveniently break away from battery case 12 to quick replacement battery.

The obstacle crossing front wheel 60 can be a blade type obstacle crossing wheel, which comprises three small wheels 61 distributed in a triangular shape and respectively connected to a blade type wheel carrier 62, the blade type wheel carrier 62 is rotatably connected to the front supporting rod 30, and a self-locking switch 63 is further arranged at each small wheel 61. The small wheels 61 are distributed in a triangular shape, and when one small wheel 61 is clamped, the other two small wheels 61 can rotate around the clamped small wheel, so that the obstacle crossing can be completed in various terrains. A quick-release multi-leaf spring device 610 is arranged between the front wheel and the front support rod 30, and the position of the front wheel can be quickly adjusted through the quick-release multi-leaf spring device 610. When the walking aid is stored, the position of the front wheels is adjusted, so that the walking aid is in the state of minimum folding volume. The quick-release multi-piece spring device 610 comprises a shaft head 611, half shafts 612, a second transverse stop piece 613, a coupling device 614 and a multi-piece spring 615, wherein one end of the shaft head 611 is connected with the front supporting rod 30, the other end of the shaft head 611 is connected with the front wheel, and the multi-piece spring 615 is used for controlling the left and right movement of the half shafts 612 on two sides, so that the clamping and the loosening of the mechanism are controlled, and the position of the front wheel is adjusted.

The rear wheel 70 may include a hub motor to provide power to help reduce physical exertion by the user.

The fan-shaped folding miniature obstacle crossing walking aid provided by the invention adopts various mechanisms, so that the walking aid occupies small space after being folded, and is convenient to carry and use during travel.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A fan-shaped folding miniature obstacle crossing walking aid is characterized by comprising a battery quick-dismantling rod, a pair of handrails, a pair of front supporting rods, a U-shaped supporting frame, a pair of cam spring combination devices, a pair of obstacle crossing front wheels, a pair of rear wheels, a seat module and a pair of telescopic supporting rods; the battery quick-release rod is provided with a first end and a second end which are oppositely arranged; one ends of the pair of armrests are connected to the first end and the second end of the battery quick release rod respectively; one ends of the pair of front support rods are respectively connected to the first end and the second end of the battery quick-release rod; two sides of a U-shaped opening of the U-shaped support frame are respectively connected to the first end and the second end of the battery quick-release rod; the pair of cam spring combination devices are respectively arranged at the connecting positions of the handrail, the front supporting rod and the U-shaped supporting frame; the pair of obstacle-crossing front wheels are respectively connected to the other end of the corresponding front supporting rod, and the pair of rear wheels are respectively connected to two sides of the U-shaped bottom of the U-shaped supporting frame; one side of the seat module is rotatably connected to the pair of front support rods, and the other side of the seat module is detachably connected to two side walls of the U-shaped support frame; the pair of telescopic supporting rods are respectively and rotatably connected to the corresponding armrests and the corresponding seat modules;

2. The fan-folded miniature obstacle crossing walker of claim 1, wherein the cam spring assembly comprises a rotating handle, a first transverse stop, a semi-cylindrical cam mechanism, a turntable, a dust cover, a cam shaft, a coil spring and a linear ball bearing connected in series along an axial direction, wherein the cam spring assembly is configured to actuate the semi-cylindrical cam mechanism after the rotating handle is rotated, thereby rotating the turntable and the cam shaft to compress the coil spring, thereby moving the linear ball bearing, and controlling the clamping or unclamping of the cam spring assembly.

3. The fan folded miniature obstacle crossing walker of claim 1 wherein the armrest comprises a suspension beam having one end connected to the battery quick release rod and a brake handle disposed at the other end of the suspension beam.

4. The fan folded miniature obstacle crossing walker of claim 1 wherein the seat module comprises a seat plate and a limit knob, the limit knob connected to the front support bar, the seat plate connected to the limit knob; the limiting knob comprises a slot, a fixed disc and a locking piece, the slot, the fixed disc and the locking piece are sequentially connected in the axial direction, and a gap is formed between the slot and the fixed disc; the locking piece is configured to lock or unlock the limit knob.

5. The fan folded micro obstacle crossing walker of claim 4 wherein the front support bar includes a plurality of oblong slots disposed along its length, the stop knob being fitted to one of the plurality of oblong slots.

6. The fan-folded miniature obstacle crossing walker of claim 3, wherein the telescoping support rods comprise a fixed rod and a telescoping rod, the telescoping rod being inserted within the fixed rod and telescopically movable along the fixed rod, one end of the fixed rod being connected to the seat module by a D-knob, and one end of the telescoping rod being connected to the suspension beam of the armrest by a D-knob.

7. The fan-folded miniature obstacle crossing walker of claim 1 wherein the obstacle crossing front wheels comprise a blade wheel frame and three small wheels connected to the blade wheel frame, the three small wheels being triangularly arranged, a self-locking switch being provided in each of the three small wheels.

8. The fan folded micro obstacle crossing walker of claim 1 wherein the obstacle crossing front wheels are connected to the front support bar by quick release multi-leaf spring devices configured to be clamped and unclamped so that the position of the obstacle crossing front wheels can be adjusted.

9. The fan-folded miniature obstacle crossing walker of claim 8 wherein said quick release multi-leaf spring means comprises a head, a half shaft, a second transverse stop, a coupling means and a multi-leaf spring, said head being connected at one end to said front support bar and at the other end to said obstacle crossing front wheel; the quick release multi-piece spring device is configured to control the left and right movement of the half shafts on two sides through the multi-piece spring, so as to control the clamping and the loosening of the quick release multi-piece spring device.

10. The fan-folded miniature obstacle crossing walker of claim 1 wherein the battery quick release lever comprises a battery quick release mechanism including a carrying buckle, a battery case and a buckle, the carrying buckle and the buckle being disposed on the battery case.