CN218220562U

CN218220562U - Double-folding-belt walking aid anti-falling structure

Info

Publication number: CN218220562U
Application number: CN202221252974.5U
Authority: CN
Inventors: 刘卫国
Original assignee: Zhongshan Qunnb Medical Equipment Co ltd
Current assignee: Zhongshan Qunnb Medical Equipment Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2023-01-06
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses a tilting prevention structure of a double-folding belt wheel walking aid, wherein a folding plastic seat is movably arranged at the top of the front end of a bottom tube of a main frame through a connecting pin, the two sides of the bottom of the folding plastic seat are clamped at the side edge of the bottom tube of the main frame, and the folding plastic seat is connected with the main frame tube; the cross pipes are movably connected between the two groups of main frame pipes and comprise two groups of cross pipes, the middle parts between the two groups of cross pipes are in an X shape through pin movable connection, the base circular pipes are movably connected between the two groups of connecting lugs on the inner side of the folding plastic seat through pin shafts, U-shaped pieces are welded on the base circular pipes, and the inner sides of the main frame bottom pipes are fixed with limiting cup head bolts matched with the U-shaped pieces. The utility model discloses an in-process of opening of two folding four-wheel cars, the U type spare on the base pipe can be progressively drawn close towards spacing cup head bolt, and until the U type groove of spacing cup head bolt sliding into U type spare completely, two folding four-wheel cars can not be taken because of the people this moment for two folding four-wheel cars can down fall, improve the safety in utilization.

Description

Double-folding-belt walking aid anti-falling structure

Technical Field

The utility model relates to a two folding four-wheel cars technical field specifically are a two folding band pulleys help capable ware to prevent down structure.

Background

When the folding vehicle is produced and designed, the convenience in carrying after folding is particularly important. However, the folding bicycle in the prior art has an unstable overall structure after being folded, and a person sitting on the folding bicycle can cause the double-folding four-wheel bicycle to fall down, so that the use safety is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two folding band pulley help capable ware prevent down structure to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a double-folding belt wheel walking aid anti-falling structure comprises cross pipes and two groups of main frame bottom pipes which are arranged in parallel from left to right, wherein front wheels and rear wheels are respectively installed at the front ends and the rear ends of the main frame bottom pipes;

swing joint has the cross pipe between two sets of main frame pipes, the cross pipe includes two sets of cross pipes, and the middle part between two sets of cross pipes is X shape through pin swing joint, the bottom welding of cross pipe has the base pipe, the base pipe is through selling axle swing joint between two sets of engaging lugs of folding plastics seat inboard, the welding has U type spare on the base pipe, and the inboard of body frame bottom tube is fixed with the spacing cup head bolt that matches with U type spare.

Fig. 1 to 4 show the opening process of the double folding four-wheeled vehicle: after the plastic sleeve lock is opened in the figure 1, when the bottom pipe of the main frame is pulled to the figure 3, the connecting rod hook slides into the connecting rod hook track under the action of the elastic force of the torsion spring. When the limiting column slides into the state shown in the figure 4 according to the track, the boss of the connecting rod hook can be pressed on the cross pipe under the action of the torsion spring, and the other end of the connecting rod hook can buckle the limiting column on the cross pipe;

in the open mode process, U type spare on the base pipe can be progressively drawn close towards spacing cup head bolt, until spacing cup head bolt slides in the U type groove of U type spare completely, the double folding four-wheel car can not be sat because of the people this moment for the double folding four-wheel car can fall down, whole platform truck is locking state this moment, and the body frame bottom tube is not allowed to draw in.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an in-process of opening of two folding four-wheel cars, the U type spare on the base pipe can be progressively drawn close towards spacing cup head bolt, and until the U type groove of spacing cup head bolt sliding into U type spare completely, two folding four-wheel cars can not be taken because of the people this moment for two folding four-wheel cars can down fall, improve the safety in utilization.

Drawings

FIG. 1 is a schematic structural view of the expanded main frame tube of the present invention;

FIG. 2 is a structural diagram illustrating the state of the cross pipe in the unfolding process of the present invention;

fig. 3 is a schematic structural view of the cross pipe of the present invention after being unfolded;

fig. 4 is a structural schematic diagram of the state that the limiting cup head bolt is locked with the U-shaped part and the connecting rod hook is locked with the limiting column;

FIG. 5 is a schematic view of the front view structure of the utility model in use;

FIG. 6 is a schematic perspective view of the utility model in use;

fig. 7 is a schematic structural view of the utility model after being completely folded;

FIG. 8 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 9 is an enlarged schematic view of the structure of fig. 3B according to the present invention;

fig. 10 is an enlarged schematic view of the structure of fig. 4 at C according to the present invention;

fig. 11 is a schematic structural view of the locking state of the connecting rod hook and the limiting post after the cross pipe is completely unfolded.

In the figure: 1. a main frame bottom pipe; 2. a rear wheel; 3. folding the plastic seat; 4. a front wheel fixing seat; 5. a universal wheel front fork; 6. a front wheel; 7. a main frame tube; 8. a butterfly-shaped grip; 9. a cushion; 10. pulling the belt; 11. a cross tube; 12. a connecting pin; 13. a connecting seat; 14. a cushion tube; 15. a connecting rod; 16. a pin; 17. a plastic sleeve lock; 18. a limiting column; 19. a connecting rod hook; 20. a base circular tube; 21. connecting lugs; 22. a U-shaped member; 23. a limiting cup head bolt; 24. connecting rod hook boss.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-11, the present invention provides a technical solution: the utility model provides a two folding band pulley help capable ware prevent down structure, includes crossing pipe and controls two sets of body frame bottom tubes 1 of parallel arrangement, front wheel 6 and rear wheel 2 are installed respectively to the front and back end of body frame bottom tube 1, 6 movable mounting of front wheel are on universal

wheel front fork

5, and 5 tops of universal wheel front fork are installed in 4 bottoms of front wheel fixing base, and front wheel fixing base 4 cup joints the front end of fixing at body frame bottom tube 1.

The top of the front end of the main frame bottom pipe 1 is movably provided with a folding plastic seat 3 through a connecting pin 12, two sides of the bottom of the folding plastic seat 3 are clamped on the side edge of the main frame bottom pipe 1, the folding plastic seat 3 is connected with a main frame pipe 7, the top of the main frame pipe 7 is provided with a butterfly-shaped handle 8, and a cross pipe is movably connected between the two groups of main frame pipes 7;

the cross pipe includes two sets of cross pipes 11, and the middle part between two sets of cross pipes 11 is X shape through 16 swing joint of pin, the bottom welding of cross pipe 11 has base pipe 20, base pipe 20 is through round pin axle swing joint between 3 inboard two sets of engaging lugs 21 of folding plastic seat, the welding has U type spare 22 on the base pipe 20, and the inboard of body frame bottom tube 1 is fixed with the spacing cup head bolt 23 that matches with U type spare 22.

The upper part of the cross pipe 11 is movably connected with a connecting seat 13 fixed on the side edge of the main frame pipe 7 through two groups of connecting rods 15, and the connecting seat 13 is welded on the inner side edge of the main frame pipe 7.

11 tops of cross pipe are connected with cushion pipe 14, and the terminal swing joint of a cushion pipe 14 has plastics cover lock 17, and swing joint has connecting rod hook 19 on the connecting rod 15 at rear portion, and connecting rod hook 19 passes through torsional spring connection in connecting rod 15, and cross pipe 11 upper portion still is equipped with the spacing post 18 that is used for connecting rod hook 19 to buckle, connecting rod hook 19 surface still is equipped with connecting rod hook boss 24.

A cushion 9 is arranged between the two groups of cushion pipes 14, a drawstring 10 is connected on the cushion 9, and the bottom of the drawstring 10 is buckled on a corresponding connecting rod hook 19.

Specifically, in use, fig. 1 to 4 show the unfolding process of the two-fold four-wheeled vehicle.

After the plastic sleeve lock 17 is unlocked in fig. 1, when the bottom tube 1 of the main frame is pulled outwards to fig. 3, the connecting rod hook 19 enables the limiting column 18 to slide into the track of the connecting rod hook 19 under the action of the elasticity of the torsion spring. When the limiting column 18 slides into the state shown in fig. 4 according to the track, the connecting rod hook boss 24 is pressed on the cross pipe 11 under the action of the torsion spring, and the other end of the connecting rod hook 19 is buckled on the limiting column 18 on the cross pipe;

in the process of an opening state, the U-shaped part 22 on the base circular tube 20 can gradually draw close to the limiting cup head bolt 23 until the limiting cup head bolt 23 completely slides into the U-shaped groove of the U-shaped part 22, at the moment, the double-folding four-wheel vehicle cannot be seated by people, so that the double-folding four-wheel vehicle can fall down, at the moment, the whole trolley is in a locking state, and the main frame bottom tube 1 is not allowed to be folded.

A folding process of the double-folding four-wheel vehicle; when the pull belt 10 is lifted upwards, one end of the connecting rod hook 19 is lifted upwards by the pull belt 10, at the moment, the limiting column 18 is derailed, the bottom pipe 1 of the main frame can be folded back, and after the cushion pipe sleeve 14 is locked by the plastic sleeve lock 17, the cushion pipe sleeve is slightly folded downwards with force, and the state of the figure 7 is returned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two folding band pulley help capable ware prevent down structure, includes two sets of body frame bottom tubes (1) of crossing pipe and left and right sides parallel arrangement, its characterized in that: the front end and the rear end of the main frame bottom pipe (1) are respectively provided with a front wheel (6) and a rear wheel (2), the top of the front end of the main frame bottom pipe (1) is movably provided with a folding plastic seat (3) through a connecting pin (12), two sides of the bottom of the folding plastic seat (3) are clamped on the side edge of the main frame bottom pipe (1), and the folding plastic seat (3) is connected with a main frame pipe (7);

swing joint has crossed pipe between two sets of main frame pipes (7), it includes two sets of crossing pipes (11) to cross the pipe, and the middle part between two sets of crossing pipes (11) is X shape through pin (16) swing joint, the bottom welding of crossing pipe (11) has base pipe (20), base pipe (20) are through round pin axle swing joint between folding plastic seat (3) inboard two sets of engaging lug (21), the welding has U type spare (22) on base pipe (20), and the inboard of main frame bottom tube (1) is fixed with spacing cup head bolt (23) that matches with U type spare (22).

2. The bi-fold wheeled walker anti-collapse structure of claim 1, wherein: the front wheel (6) is movably arranged on the universal wheel front fork (5), the top of the universal wheel front fork (5) is arranged at the bottom of the front wheel fixing seat (4), and the front wheel fixing seat (4) is fixedly connected with the front end of the main frame bottom pipe (1) in a sleeved mode.

3. The bi-fold wheeled walker anti-collapse structure of claim 1, wherein: and a butterfly-shaped grip (8) is arranged at the top of the main frame pipe (7).

4. The bi-fold pulley walker anti-collapse structure of claim 1, wherein: the upper portion of cross pipe (11) is through two sets of connecting rods (15) swing joint in main frame pipe (7) side fixed connecting seat (13), connecting seat (13) weld in main frame pipe (7) inboard side.

5. The bi-fold wheeled walker anti-collapse structure of claim 4, wherein: crossing pipe (11) top is connected with cushion pipe (14), and the terminal swing joint of a cushion pipe (14) has plastic sheath lock (17), and swing joint has connecting rod hook (19) on connecting rod (15) at rear portion, and connecting rod hook (19) pass through torsional spring to be connected in connecting rod (15), and crosses pipe (11) upper portion and still is equipped with spacing post (18) that are used for connecting rod hook (19) to buckle, connecting rod hook (19) surface still is equipped with connecting rod hook boss (24).

6. The bi-fold pulley walker anti-collapse structure of claim 4, wherein: install cushion (9) between two sets of cushion pipes (14), be connected with stretching strap (10) on cushion (9), the bottom of stretching strap (10) is detained on corresponding connecting rod hook (19).