CN115071797B

CN115071797B - A new type of hand-pull folding car

Info

Publication number: CN115071797B
Application number: CN202210966870.9A
Authority: CN
Inventors: 童鹏飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2025-07-15
Anticipated expiration: 2042-08-12
Also published as: CN115071797A

Abstract

The invention discloses a novel hand-pulled folding cart which comprises front and rear upright posts on the left side and the right side, front and rear X folding frames, first and second side folding frames, folding bases and front and rear wheels, wherein upper and lower hinge seats are correspondingly fixed on the front and rear upright posts on the left side and the right side, the upper parts of the front and rear X folding frames are hinged on the upper hinge seats, the lower parts of the front and rear X folding frames are hinged on the lower hinge seats, the folding bases comprise main connecting rods, main and auxiliary hinge seats, front and rear base connecting rods, diagonal telescopic rods and pull rods, the main and auxiliary hinge seats are hinged at two ends of the main connecting rods, the front and rear base connecting rods are hinged on the main hinge seats and the lower hinge seats, the diagonal telescopic rods are hinged on the main hinge seats and the lower hinge seats, one ends of the pull rods are hinged on the auxiliary hinge seats, and the other ends of the pull rods are connected on the first side folding frames. After adopting above-mentioned structure, have structural design reasonable, folding easy operation, use reliable and stable, the carrying capacity is big, folding small, goods loading and unloading and convenient to carry's advantage.

Description

Novel hand-pulled folding bicycle

Technical Field

The invention relates to the technical field of hand-pulled vehicles, in particular to a novel hand-pulled folding vehicle which is rapid to fold, small in size and convenient to carry.

Background

With the rapid development of outdoor camping in China, in order to facilitate the outdoor transportation of activities such as self-driving tour, suburb camping and the like, many consumers use a handcart as a transportation tool to directly drag various articles on the handcart, so that the trouble that the large and small bags of the consumers are lifted on the hands can be solved, and the convenience is brought to the consumers greatly. However, the existing hand-pulled vehicles on the market have the following problems in the use process that firstly, the existing folding hand-pulled vehicles are limited by the appearance volume, the placed goods are few, and the requirement of storing the goods by consumers cannot be met. Secondly, the structure is unreasonable, the mechanical strength is low, the carrying capacity is small, the overall structure stability is poor, the use is unreliable, and the road tractor can not adapt to the field road drag with poor road conditions. Thirdly, the cargo is inconvenient to load and unload. In view of the above problems, many manufacturers and knowledgeable individuals have developed and tried to make them, but no ideal product has been developed so far.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a novel hand-pulled folding vehicle which is reasonable in structural design, simple in folding operation, stable and reliable in use, large in carrying capacity, small in folding volume and convenient to load and unload cargoes and carry.

The invention provides a technical proposal for solving the technical problems, which comprises a front upright post, a rear upright post, a front X folding frame, a rear X folding frame, a first side folding frame, a second side folding frame, a folding base and front wheels, wherein the front upright post, the rear upright post, the front folding frame, the rear folding base and the front wheels are correspondingly connected between the front upright post and the rear upright post on the left side and the right side, the front upright post and the rear upright post are correspondingly fixed with an upper hinging seat and a lower hinging seat, the upper parts of the front X folding frame and the rear X folding frame are correspondingly hinged on the upper hinging seat of the front upright post and the rear upright post on the left side and the right side through front telescopic rods, the lower parts of the front X folding frame and the rear X folding frame are correspondingly hinged on the lower hinging seat of the front upright post and the rear upright post on the left side and the right side, the folding base comprises a main connecting rod, a main hinge seat, a pair of front base connecting rods, a pair of auxiliary hinge seats, a pair of diagonal telescopic rods and a pull rod, wherein the main hinge seat is correspondingly hinged at two ends of the main connecting rod, the front base connecting rods and the rear base connecting rods are correspondingly hinged on a lower hinge seat between the main hinge seat and a corresponding front upright post and a corresponding rear upright post, the pair of diagonal telescopic rods are correspondingly hinged on a lower hinge seat between the main hinge seat and a corresponding front upright post and a corresponding rear upright post, and the lower end of the pull rod is hinged on the auxiliary hinge seat, and the upper end of the pull rod is connected on the first side folding frame.

According to a further scheme, the first side folding frame comprises a front X fork rod and a rear X fork rod which are mutually connected in a cross mode, the front upper end of the front X fork rod is correspondingly hinged to an upper hinging seat of the front upright, the front lower end of the front X fork rod is in sliding connection with the front upright through a fork rod sliding sleeve, the rear upper end of the rear X fork rod is correspondingly hinged to an upper hinging seat of the rear upright, the rear lower end of the rear X fork rod is in sliding connection with the rear upright through a fork rod sliding sleeve, the rear upper end of the front X fork rod is hinged to the front upper end of the rear X fork rod, the rear lower end of the front X fork rod is hinged to the front lower end of the rear X fork rod, the pull rod sliding sleeve is sleeved on the pull rod in a sliding mode, a limiting part for preventing the pull rod sliding sleeve from sliding upwards is arranged on the pull rod, and the pull rod and the front X fork rod form a hanging structure with stable structure when the base is folded to bear load.

According to a further scheme, the second side folding frame comprises a front connecting rod and a rear connecting rod, one ends of the front connecting rod and the rear connecting rod are correspondingly hinged to the upper hinging seats of the front upright post and the rear upright post, the other ends of the front connecting rod and the rear connecting rod are respectively connected to the quick-release connectors, front supporting connecting rods and rear supporting connecting rods are correspondingly hinged to the front connecting rods and the rear connecting rods, and the other ends of the front supporting connecting rods and the rear supporting connecting rods are correspondingly connected to the front upright post and the rear upright post in a sliding mode through connecting rod sliding sleeves.

According to a further scheme, the quick-release connector comprises a knob seat and a lock catch seat which are correspondingly fixed on the front connecting rod and the rear connecting rod, a lock hole is formed in the lock catch seat, a locking knob matched with the lock hole is arranged on the knob seat, and the knob seat is detachably hinged to the lock catch seat through the locking knob.

According to a further scheme, the hand-pulled folding vehicle further comprises a hand-pulled device, the hand-pulled device comprises a handle and a handle support, the handle support is correspondingly hinged to the lower hinging seats of the front upright posts on the left side and the right side, and the handle is connected to the handle support in an adjustable length mode.

According to the further scheme, the front wheel and the rear wheel are detachably and correspondingly arranged on the lower hinging seats of the front upright post and the rear upright post on the left side and the right side, the front wheel and the rear wheel are correspondingly provided with wheel frames, the wheel frames are fixedly provided with wheel shafts, the wheel shafts are provided with wheel shaft rotating parts, the connecting parts of the lower hinging seats are provided with elastic reset elastic buttons, the elastic buttons are provided with through holes matched with the wheel shaft rotating parts and locking grooves connected with the through holes, the wheel shaft rotating parts can be rapidly detached when matched with the through holes, and the wheel shafts can be locked and can be rotated at will when the wheel shaft rotating parts are matched with the locking grooves.

By adopting the structure, compared with the prior art, the structure has the following advantages and effects.

Firstly, because the main articulated seat of folding base can one-way folding articulated on the main connecting rod, preceding back base connecting rod can one-way folding articulated on the articulated seat down between main articulated seat and corresponding front and back stand, diagonal telescopic link corresponds articulated on articulated seat down between main articulated seat and corresponding front and back stand, the lower extreme of pull rod articulates on vice articulated seat, the upper end is connected on first side folding leg, when folding car struts and uses, one side of folding base plays fine bearing effect under main connecting rod, front and back base connecting rod and diagonal telescopic link effect, the opposite side of folding base can play fine bearing effect under pull rod and first side folding leg cooperation, folding base rigidity is good, mechanical strength is high, stability is good, the load capacity is big.

And secondly, because the front and rear X fork rods of the first side folding frame are hinged with each other and correspondingly hinged on the front and rear upright posts, the front and rear X fork rods are hinged with the upper ends of the pull rods and are simultaneously sleeved on the pull rods in a sliding way through the pull rod sliding sleeves, the pull rods are provided with limiting parts for preventing the pull rod sliding sleeves from sliding upwards, and when the folding base bears load, the limiting parts of the pull rods prevent the pull rods from sliding relative to the pull rod sliding sleeves, and when the folding base bears load, the pull rods and the front and rear X fork rods form a hanging structure with stable structure.

And when the folding seat is folded, the front upright post, the rear upright post, the front and rear X folding frames, the first side folding frame, the second side folding frame and the folding base on the left side and the right side are gathered and folded towards the center, so that the folding seat is simple and quick to fold, small in size and convenient to carry and store.

And fourthly, as the front connecting rod and the rear connecting rod of the second side folding frame can be connected or unfolded through the quick-release connector, the cargo loading and unloading are more convenient, and the folding base can also be used as a stool.

Fifth, because the handle support is correspondingly hinged on the lower hinging seat of the front upright posts at the left side and the right side, the length of the handle is adjustably connected on the handle support, and the novel hand-pulled folding cart is greatly convenient to drag.

And sixthly, the front wheel and the rear wheel can be quickly and detachably arranged on the lower hinge seat, so that the front wheel and the rear wheel are easy and convenient to exchange and detach.

Drawings

Fig. 1 is a schematic perspective view of the present invention in a use state.

Fig. 2 is a schematic top view of the invention of fig. 1.

Fig. 3 is a schematic view of another three-dimensional structure of the present invention in the use state.

Fig. 4 is a schematic perspective view illustrating the quick release connector of fig. 3 according to the present invention.

Fig. 5 is a schematic diagram of an exploded structure of the quick release connector according to the present invention.

Fig. 6 is a schematic view of an exploded structure of the front and rear wheels of the present invention.

Fig. 7 is a schematic perspective view of the present invention in a semi-folded state.

Fig. 8 is a schematic perspective view of the folded state of the present invention.

The front column, the support connecting rod, the front connecting rod, the handle bracket, the front X folding frame, the quick-release connector, the front telescopic rod, the rear connecting rod, the upper hinging seat, the 11 fork rod sliding sleeve, the rear column, the 13 rear telescopic rod, the front X fork rod, the 15 pull rod, the 16 limiting part, the 17 rear X folding frame, the 18 rear X fork rod, the 19 connecting rod sliding sleeve, the lower hinging seat, the front wheel, the front base connecting rod, the 23 main hinging seat, the 24 rear base connecting rod, the 25 main connecting rod, the 26 diagonal telescopic rod, the 27 auxiliary hinging seat, the 28 rear wheel, the 29 pull rod sliding sleeve, the locking knob, the 31 knob seat, the 32 lock hole, the 33 locking seat, the 34 wheel carrier, the 35 wheel axle, the 36 wheel axle rotating part, the 37 spring, the 38 elastic button, the 39 through hole and the 40 locking groove.

Detailed Description

Fig. 1 to 8 show that a specific embodiment of a novel hand-pulled folding cart is created for the invention, which comprises front and rear posts 1, 12 on the left and right sides, front and rear X folding frames 6, 17, a first side folding frame and a second side folding frame which are correspondingly connected between the front and rear posts 1, 12 on the left and right sides, folding bases, front and rear wheels 21, 28, upper and lower hinging bases 10, 20 are correspondingly fixed on the front and rear posts 1, 12 on the left and right sides, the upper parts of the front and rear X folding frames 6, 17 are correspondingly hinged on the upper hinging bases 10 of the front and rear posts 1, 12 on the left and right sides through front and rear telescopic links 8, 13, the lower parts of the front and rear X folding frames 6, 17 are correspondingly hinged on the lower hinging bases 20 of the front and rear posts 1, 12 on the left and right sides, the folding bases comprise main connecting rods 25, main and auxiliary hinging bases 23, 27, front and rear base connecting rods 22, 24, diagonal telescopic links 26, pull rods 15, the main auxiliary hinging bases 23, 27 are correspondingly hinged on the two ends of the main connecting rods 25, the front and rear base connecting rods 22, 24 are correspondingly hinged on the upper hinging bases 20 on the front and rear posts 23 and the corresponding to the lower hinging bases 20 on the front and rear posts 12, respectively, and the front and rear side bases 2 are correspondingly hinged on the upper hinging bases 20.

In order to ensure folding and bearing, the first side folding frame comprises a front X fork rod 14 and a rear X fork rod 18 which are mutually connected in a cross manner, the front upper end of the front X fork rod 14 is correspondingly hinged on the upper hinging seat 10 of the front upright 1, the front lower end of the front X fork rod is correspondingly hinged on the upper hinging seat 10 of the rear upright 12 through a fork rod sliding sleeve 11, the rear upper end of the rear X fork rod 18 is correspondingly hinged on the upper hinging seat 10 of the rear upright 12, the rear lower end of the rear X fork rod 14 is correspondingly hinged with the rear upright 12 through a fork rod sliding sleeve 11, the front upper end of the front X fork rod 14 is hinged with the upper end of the rear X fork rod 18, the rear lower end of the front X fork rod 14 is hinged on the bearing sleeve 29, the pull rod sliding sleeve 29 is sleeved on the pull rod 15 in a sliding manner, the pull rod 15 is provided with a limiting part 16 for preventing the pull rod sliding sleeve 29 from sliding upwards, and when the base is folded, the limiting part 16 limits the pull rod sliding sleeve 29, and the front X fork rod 14 and the rear X fork rod 18 form a stable-suspended structure, and the front X fork rod 14 and the rear X fork rod 18 are ensured not to deform when the pull rod 15 is folded.

For convenience in folding, the second side folding frame include front and back connecting rod 3,9, front and back connecting rod 3, 9's one end corresponds to articulate on front and back stand 1, 12's last articulated seat 10, the other end is connected respectively on quick detach connects 7, front and back connecting rod 3,9 can realize folding through quick detach connects 7, front and back connecting rod 3,9 is last to correspond to articulate around supporting link 2, the other end of supporting link 2 is through connecting rod sliding sleeve 19 correspondingly connected on front and back stand 1, 12 in a sliding manner, front and back supporting link 2 can improve the stability and the reliability that the second side folding frame was connected.

In order to facilitate cargo handling and use as a stool, the quick release connector 7 comprises a knob seat 31 and a lock catch seat 33 which are correspondingly fixed on the front and rear connecting rods 3 and 9, a lock hole 32 is arranged on the lock catch seat 33, a locking knob 30 matched with the lock hole 32 is arranged on the knob seat 31, and the knob seat 31 is detachably hinged on the lock catch seat 33 through the locking knob 30.

In order to facilitate the use, the hand-pulled folding cart further comprises a hand pulling device, wherein the hand pulling device comprises a handle 5 and a handle support 4, the handle support 4 is correspondingly hinged on the lower hinging seat 20 of the front upright post 1 on the left side and the right side, and the length of the handle 5 is connected to the handle support 4 in an adjustable manner.

In order to facilitate the replacement and disassembly of the front and rear wheels 21 and 28, the front and rear wheels 21 and 28 are detachably and correspondingly arranged on the lower hinge seat 20 of the front and rear uprights 1 and 12 at the left and right sides, the front and rear wheels 21 and 28 are correspondingly provided with wheel frames 34, the wheel frames 34 are fixedly provided with wheel shafts 35, the wheel shafts 35 are provided with wheel shaft rotating parts 36, the connecting parts of the lower hinge seat 20 are provided with elastic reset buttons 38, and the elastic buttons 38 are provided with through holes 39 matched with the wheel shaft rotating parts 36 and locking grooves 40 connected with the through holes 39. When the elastic button 38 is pressed to move inwards against the elastic force of the spring 37, the axle rotating part 36 is matched with the through hole 39 to be quickly disassembled, when the elastic button 38 is released, the elastic button 38 automatically resets under the elastic force of the spring 37, and the axle rotating part 36 is matched with the locking groove 40 to lock the axle 35 and can rotate randomly, so that the quick disassembly and the quick assembly of the front wheels 21 and the rear wheels 28 and the steering function of the universal wheels are realized.

When the folding device is folded, the main hinge seat 23 is lifted upwards, the main hinge seat 23 drives the front base connecting rods 22 and the rear base connecting rods 24, the diagonal telescopic rods 26 and the main connecting rods 25 to move upwards, the front base connecting rods 22 and the rear base connecting rods 24, the diagonal telescopic rods 26 and the main connecting rods 25 are driven to move upwards, the front upright posts 1 and the rear upright posts 12 and the auxiliary hinge seat 27 are driven to fold, the front folding X-shaped folding frames 6 and 17 are driven to fold, the front fork rods 14 and the rear X-shaped fork rods 18 are driven to fold, the front connecting rods 3 and the rear connecting rods 9 are driven to fold downwards, the pull rods 29 slide downwards along the pull rods 15 when the front connecting rods 14 and the rear connecting rods 3 and the rear connecting rods 9 are folded downwards, and the connecting rod sliding sleeves 19 slide downwards along the corresponding front upright posts 1 and the rear upright posts 12, so that the front folding frames 1 and the rear upright posts 12, the front folding frames 6 and 17, the first side folding frames and the second side folding frames and the folding bases are driven to fold towards the center.

The foregoing is merely an embodiment of the present invention and is not intended to limit the invention in any way, and simple modifications, equivalent variations or modifications can be made without departing from the technical solution of the invention, all falling within the scope of the invention.

Claims

1. A novel hand-pull folding bicycle, comprising front columns (1) and rear columns (12) on the left and right sides, a front X-folding frame (6), a rear X-folding frame (17), a first side folding frame and a second side folding frame correspondingly connected between the front columns (1) and the rear columns (12) on the left and right sides, a folding base, a front wheel (21), and a rear wheel (28), wherein an upper hinge seat (10) and a lower hinge seat (20) are correspondingly fixed on the left and right front columns (1) and the rear columns (12), and the characteristic is that: the upper parts of the front X-folding frame (6) and the rear X-folding frame (17) are correspondingly hinged on the upper hinge seats (10) of the left and right front columns (1) and the rear columns (12) through a front telescopic rod (8) and a rear telescopic rod (13), and the lower parts of the front X-folding frame (6) and the rear X-folding frame (17) are correspondingly hinged on the left and right sides. On the lower hinged seat (20) of the front column (1) and the rear column (12), the folding base comprises a main connecting rod (25), a main hinged seat (23), a secondary hinged seat (27), a front base connecting rod (22), a rear base connecting rod (24), a diagonal telescopic rod (26), and a pull rod (15); the main hinged seat (23) and the secondary hinged seat (27) are correspondingly hinged at two ends of the main connecting rod (25); the front base connecting rod (22) and the rear base connecting rod (24) are correspondingly hinged on the lower hinged seat (20) between the main hinged seat (23) and the corresponding front column (1) and the rear column (12); the diagonal telescopic rod (26) is correspondingly hinged on the lower hinged seat (20) between the main hinged seat (23) and the corresponding front column (1) and the rear column (12); the lower end of the pull rod (15) is hinged on the secondary hinged seat ( 27), the upper end of which is connected to the first side folding frame; the first side folding frame comprises a front X-shaped fork rod (14) and a rear X-shaped fork rod (18) which are cross-connected to each other, the front upper end of the front X-shaped fork rod (14) is correspondingly hinged on the upper hinge seat (10) of the front column (1), and the front lower end is slidably connected to the front column (1) through a fork rod sliding sleeve (11), the rear upper end of the rear X-shaped fork rod (18) is correspondingly hinged on the upper hinge seat (10) of the rear column (12), and the rear lower end is slidably connected to the rear column (12) through a fork rod sliding sleeve (11), the rear upper end of the front X-shaped fork rod (14) and the front upper end of the rear X-shaped fork rod (18) are hinged to the upper end of the pull rod (15), the rear lower end of the front X-shaped fork rod (14) and the front lower end of the rear X-shaped fork rod (18) are hinged on the pull rod sliding sleeve (29), and the pull rod sliding sleeve (29) is slidably sleeved on the pull rod The pull rod (15) is provided with a limit portion (16) for preventing the pull rod sliding sleeve (29) from sliding upward. When the folding base is load-bearing, the pull rod (15) and the front X-fork rod (14) and the rear X-fork rod (18) form a stable lifting structure; the second side folding frame includes a front connecting rod (3) and a rear connecting rod (9), one end of the front connecting rod (3) and the rear connecting rod (9) are correspondingly hinged on the upper hinge seats (10) of the front column (1) and the rear column (12), and the other end is respectively connected to the quick-release joint (7); the front connecting rod (3) and the rear connecting rod (9) are correspondingly hinged with front and rear supporting connecting rods (2), and the other end of the front and rear supporting connecting rods (2) are correspondingly connected to the front column (1) and the rear column (12) through the connecting rod sliding sleeve (19); the hand-pull folding car also includes a hand-pull device.

2. The new hand-pull folding bicycle according to claim 1 is characterized in that: the quick-release joint (7) includes a knob seat (31) and a lock seat (33) fixed correspondingly on the front connecting rod (3) and the rear connecting rod (9), the lock seat (33) is provided with a lock hole (32), the knob seat (31) is provided with a locking knob (30) matching the lock hole (32), and the knob seat (31) is detachably hinged to the lock seat (33) through the locking knob (30).

3. The new hand-pull folding bicycle according to claim 1 or 2 is characterized in that: the front wheels (21) and rear wheels (28) are detachably arranged on the lower hinge seats (20) of the front pillars (1) and the rear pillars (12) on the left and right sides, and wheel frames (34) are correspondingly arranged on the front wheels (21) and the rear wheels (28), and a wheel axle (35) is fixed on the wheel frame (34), and a wheel axle (35) is provided on the wheel axle (35) The wheel axle rotating part (36), an elastic button (38) that can be elastically reset is provided on the connecting part of the lower hinge seat (20), and the elastic button (38) is provided with a through hole (39) that cooperates with the wheel axle rotating part (36) and a locking groove (40) connected to the through hole (39), the wheel axle rotating part (36) can be quickly disassembled when it cooperates with the through hole (39), and the wheel axle rotating part (36) When it cooperates with the locking groove (40), the wheel axle (35) is locked and can be rotated arbitrarily.