CN215752439U

CN215752439U - Folding pull rod vehicle

Info

Publication number: CN215752439U
Application number: CN202122357519.3U
Authority: CN
Inventors: 叶乾峰
Original assignee: Ningbo De'ao Plastic Technology Co ltd
Current assignee: Ningbo De'ao Plastic Technology Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-08
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a folding pull rod trolley, which comprises a box body, a pull rod and a roller component, wherein a rear seat connecting and locking device is arranged at the bottom of the box body, the rear seat connecting and locking device consists of a base and a locking part, the locking part comprises a chuck, a rack, a transmission gear, a screw nut mechanism and an adjusting hand wheel which are symmetrically arranged, the screw nut mechanism consists of a screw rod and a guide nut, one end of the screw rod extends into the left chuck and forms a limiting block at the end part, the other end of the screw rod extends out of the right chuck, the end part of the screw rod is connected with the adjusting hand wheel, and a stop spring and a spring pressing sheet are sleeved at the screw rod. The foldable bicycle has the technical effects that the rear seat is connected with the locking device when the pull rod bicycle is in an unfolded state, the pull rod bicycle is convenient to mount on the bicycle tailstock, the chuck is retracted and pre-tightened by rotating the adjusting hand wheel, and the pull rod bicycle is stably mounted on the bicycle tailstock.

Description

Folding pull rod vehicle

Technical Field

The utility model relates to a pull rod vehicle, in particular to a folding pull rod vehicle.

Background

A trolley, also known as a draw-bar box, is a storage box commonly used by people when going out. With the increasing demand of people, the functions of the trolley are more and more extensive and the application scenes are more and more. The pull rod trolley which is common in the market generally comprises a pull rod and a caster device, so that a user can conveniently drag the pull rod trolley on the ground. However, most of the existing trolley vehicles widely used by people have a fixed volume, which causes the trolley vehicles to occupy a large storage space in an unused state, and is inconvenient to store and carry.

In order to solve the problems, a Chinese utility model patent document with an issued patent number of 201921486371.X provides a folding draw-bar box, which comprises a first mounting plate, a draw bar, a second mounting plate, a side plate, a cover plate and a bottom plate; the upper surface of the first mounting plate is connected with a pull rod, a second mounting plate is arranged right in front of the first mounting plate, side plates are arranged on two sides between the second mounting plate and the first mounting plate, the side plates are hinged with the first mounting plate and the second mounting plate, a bottom plate is hinged with the second mounting plate towards the bottom of one surface of the first mounting plate, and cover plates are arranged at the top ends of the first mounting plate and the second mounting plate; the first mounting plate and the second mounting plate are convenient for the stability of the whole pull rod and the use of the whole pull rod, the assembly of the whole pull rod is convenient, the pull rod is convenient to pull to walk, the shopping can be conveniently carried out by the pull rod, the side plate is convenient to fold the whole pull rod, the unfolding and the use of the whole pull rod are convenient, the pull rod can be conveniently operated, the cover plate is convenient to seal the pull rod, the articles in the pull rod are prevented from being overturned from an opening at the top end of the pull rod, the bottom plate is convenient to support the bottom of the pull rod, the articles in the pull rod can be conveniently and stably supported, the articles in the pull rod can be stably placed, the structure enables the pull rod to be conveniently folded and used, the carrying by people is convenient, the unfolding and the storage are convenient, the operation is convenient, the stability of the articles in the loading and the moving is good, the problem that the articles are separated from the shopping pull rod is not easy to occur, and the use of the shopping pull rod is greatly convenient, is convenient for people to shop and use.

However, the foldable draw-bar box can only be pulled manually to move on the ground in actual use, but now the shared economy prevails, people can select shared bicycles to ride instead of walk more and more when going out in short distance, and when people want to carry the foldable draw-bar box to go out, the problem of mounting the foldable draw-bar box or the draw-bar vehicle and the shared bicycles becomes a big problem.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The utility model aims to provide a folding pull rod vehicle which is reasonable in structure, good in stability and convenient to install on a bicycle tail frame.

In order to achieve the purpose, the utility model provides the following technical scheme: a folding pull rod vehicle comprises a box body, a pull rod and a roller component, wherein the pull rod is fixedly arranged on the side part of the box body, the roller component is arranged at the bottom of the box body, a rear seat is detachably arranged at the bottom of the box body and is connected with a locking device, the rear seat is connected with the locking device and consists of a base and a locking component, the locking component comprises a pair of chucks, racks, a transmission gear, a screw nut mechanism and an adjusting hand wheel which are symmetrically arranged, each rack is integrally formed with the corresponding chuck, the racks are correspondingly meshed with the transmission gear, the screw nut mechanism consists of a screw rod and a guide nut, the screw rod and the guide nut are matched for transmission, one end of the screw rod extends into the left chuck and integrally forms a limit block at the end part of the screw rod, the other end of the screw rod extends out of the right chuck, the end part of the screw rod is connected with the adjusting hand wheel, a position stopping spring and a spring are sleeved at the position of the screw rod, and one side of the spring pressing sheet is abutted against the shaft end of the adjusting hand wheel.

Further, the box comprises preceding baffle, backplate, left baffle, right baffle and bottom plate, and left and right baffle is articulated with preceding, backplate respectively, and is provided with first draw-in groove in the bottom of left baffle and right baffle, it is provided with first buckle to correspond on the bottom plate, and the bottom plate from last to installing the completion back down, and first buckle corresponds the interior straining of embedding first draw-in groove in proper order.

Furthermore, the bottom of the left baffle and the bottom of the right baffle are integrally formed with mounting blocks, and the base is provided with first mounting grooves correspondingly matched with the mounting blocks.

Further, a second mounting groove and a gear mounting position are formed in the base, a mounting frame is integrally formed at the gear mounting position, the chuck is oppositely arranged at the second mounting groove, the transmission gear is correspondingly mounted at the gear mounting position and sleeved on the mounting frame, and the screw rod penetrates through the mounting frame from right to left.

Furthermore, the left baffle and the right baffle are both composed of a first connecting plate and a second connecting plate, a pair of first hinge parts are formed at the first connecting plate, correspondingly, a second hinge part is formed at the second connecting plate, and the first hinge parts and the second hinge parts are matched to realize the overturning and folding of the connecting plates.

Further, the both sides of preceding baffle set up the second buckle respectively, correspondingly the backplate department be provided with second buckle complex joint piece, when the pull rod car is in fold condition, the inboard upset of first connecting plate and the second connecting plate of left and right baffle department, preceding, backplate laminate each other, and the second buckle of baffle department corresponds the lock joint on the joint piece of backplate department before and.

Further, chuck one side limit portion department sets up locking device, locking device comprises embedding piece, compression spring and compressing tightly piece, it is spacing that a side end of embedding piece extends to its outside joint from the chuck inboard, compression spring arranges in between embedding piece and the compressing tightly piece, compressing tightly piece and chuck bolted connection.

Compared with the prior art, the utility model has the beneficial effects that: the pull rod vehicle is characterized in that the bottom of the pull rod vehicle is provided with a rear seat connecting and locking device in an unfolding state, the pull rod vehicle is convenient to mount on a bicycle tailstock, and the chuck is contracted and pre-tightened by rotating the adjusting hand wheel, so that the pull rod vehicle is stably mounted on the bicycle tailstock.

Drawings

FIG. 1 is a schematic view of the folding trolley of the present invention;

FIG. 2 is a schematic view of the backseat attachment locking mechanism of the present invention;

FIG. 3 is a longitudinal cross-sectional view of the backseat attachment locking mechanism of the present invention;

FIG. 4 is a schematic structural view of a folding trolley case of the utility model;

FIG. 5 is an enlarged view of a portion of FIG. 2 at A;

FIG. 6 is an enlarged view of a portion of FIG. 4 at B;

FIG. 7 is a schematic view of the folding trolley of the present invention in a folded state;

FIG. 8 is an enlarged view of a portion of FIG. 7 at C;

FIG. 9 is an enlarged partial schematic view at D of FIG. 7;

FIG. 10 is a transverse cross-sectional view of the backseat attachment locking mechanism of the present invention;

fig. 11 is a partially enlarged schematic view at E in fig. 10.

In the figure: the device comprises a box body 1, a pull rod 2, a roller assembly 3, a rear seat connecting and locking device 4, a base 5, a locking part 6, a chuck 7, a rack 8, a transmission gear 9, a lead screw nut mechanism 10, an adjusting hand wheel 11, a lead screw 12, a guide nut 13, a limiting block 14, a stop spring 15, a spring pressing sheet 16, a front baffle 17, a rear baffle 18, a left baffle 19, a right baffle 20, a bottom plate 21, a first clamping groove 22, a first buckle 23, an installation block 24, a first installation groove 25, a second installation groove 26, a gear installation position 27, an installation frame 28, a first connecting plate 29, a second connecting plate 30, a first hinging part 31, a second hinging part 32, a second buckle 33, a clamping block 34, a locking device 35, an embedding sheet 36, a compression spring 37 and a compression sheet 38.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-11, the utility model provides a folding trolley, comprising a box body 1, a pull rod 2 and a roller assembly 3, wherein the pull rod 2 is fixedly installed at the side part of the box body 1, the roller assembly 3 is installed at the bottom part of the box body 1, a rear seat connecting and locking device 4 is also detachably installed at the bottom part of the box body 1, the rear seat connecting and locking device 4 is composed of a base 5 and a locking member 6, the locking member 6 comprises a pair of chucks 7, a rack 8, a transmission gear 9, a screw nut mechanism 10 and an adjusting hand wheel 11 which are symmetrically arranged, each rack 8 is integrally formed with the corresponding chuck 7, the rack 8 is correspondingly engaged with the transmission gear 9, the screw nut mechanism 10 is composed of a screw 12 and a guide nut 13 which are in matched transmission, one end of the screw 12 extends into the left chuck, and a limit block 14 is integrally formed at the end part of the screw 12, the other end of the screw rod 12 extends out of the right chuck, the end part of the screw rod is connected with the adjusting hand wheel 11, a stop spring 15 and a spring pressing sheet 16 are sleeved at the screw rod 12, and one side of the spring pressing sheet 16 abuts against the shaft end of the adjusting hand wheel 11.

In this embodiment, the box 1 is composed of a front baffle 17, a rear baffle 18, a left baffle 19, a right baffle 20 and a bottom plate 21, the left and right baffles are respectively hinged to the front and rear baffles, a first clamping groove 22 is arranged at the bottom of the left baffle 19 and the bottom of the right baffle 20, a first buckle 23 is correspondingly arranged on the bottom plate 21, and after the bottom plate 21 is installed from top to bottom, the first buckle 23 is sequentially and correspondingly embedded into the first clamping groove 22 for fastening.

In this embodiment, the bottom of the left baffle 19 and the bottom of the right baffle 20 are integrally formed with a mounting block 24, and the base 5 is provided with a first mounting groove 25 correspondingly matched with the mounting block 24.

In this embodiment, a second installation groove 26 and a gear installation position 27 are formed in the base 5, an installation frame 28 is integrally formed at the gear installation position 27, the chuck 7 is oppositely disposed at the second installation groove 26, the transmission gear 9 is correspondingly installed at the gear installation position 27 and sleeved on the installation frame 28, and the lead screw 12 penetrates through the installation frame 28 from right to left.

In this embodiment, each of the left and

right flaps

19 and 20 is composed of a first connecting plate 29 and a second connecting plate 30, and a pair of first hinge portions 31 are formed at the first connecting plate 29, and correspondingly, a second hinge portion 32 is formed at the second connecting plate 30, and the first hinge portions 31 and the second hinge portions 32 cooperate to realize the turnover folding of the connecting plates.

In this embodiment, preceding baffle 17's both sides set up second buckle 33 respectively, correspondingly backplate 18 department be provided with second buckle 33 complex joint piece 34, when the pull rod car is in fold condition, the inboard upset of first connecting plate 29 and the second connecting plate 30 of left and right baffle department, preceding, backplate laminate each other, and just preceding baffle 17 department second buckle 33 corresponds the lock joint on the joint piece 34 of backplate 18 department.

In this embodiment, a locking device 35 is disposed at one side edge portion of the chuck 7, the locking device 35 is composed of an embedded piece 36, a compression spring 37 and a pressing piece 38, one side end portion of the embedded piece 36 extends from the inner side of the chuck 7 to the outer side of the chuck for clamping and limiting, the compression spring 37 is disposed between the embedded piece 36 and the pressing piece 38, and the pressing piece 38 is connected with the chuck 7 through a bolt.

When the folding pull rod vehicle is converted from a folding state to an unfolding state, the rear baffle 18 attached to the front baffle 17 is opened backwards, meanwhile, the first connecting plate 29 and the second connecting plate 30 at the left baffle and the right baffle are turned outwards until the left baffle and the right baffle are completely opened, then the bottom plate 21 which is folded in advance is installed, the first buckles 23 at the bottom plate 21 are correspondingly embedded into the first clamping grooves 22 at the bottoms of the left baffle and the right baffle one by one, and the conversion of the folding pull rod vehicle from the folding state to the unfolding state is completed;

in order to stably mount the foldable trolley on the bicycle tail frame, a backseat connecting locking device 4 is mounted at the bottom of the trolley, and particularly, a base 5 and each locking piece 6 are mounted. When the base is installed, under the guiding action of the installation block 24, the base 5 enters from the opening at one side of the first installation groove 25 of the base 5 and is pushed from the rear end to the front end, when the base is in a proper position, the bolt at the position of the compression sheet 38 is screwed, the compression spring 37 bears the force to upwards jack the pre-installed embedding sheet 36, so that the embedding sheet 36 is tightly attached to the inner side wall of the base 5 of the installation position, and the transverse and longitudinal limiting of the base 5 is realized.

This locking device 4 is connected to back seat when installing with the bicycle tailstock, twist and move adjusting hand wheel 11, end position spring 15 compression, overcome the frictional resistance acting of chuck 7 and base 5, right side chuck 7 moves toward the left side when ending position spring 15's elasticity is greater than frictional resistance, it moves to the right side to be located left chuck 7 simultaneously under the effect of lead screw 12 and lead screw one side stopper 14, when both sides chuck 7 moves to the middle part, rack 8 and the meshing transmission of drive gear 9 that corresponds chuck 7 department setting, realize both sides chuck 7 and contract or put outward simultaneously. So as to facilitate the quick installation or the quick removal of the folding trolley on the bicycle tailstock.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a folding trolley, includes box, pull rod and wheel components, pull rod fixed mounting is at the lateral part of box, wheel components installs in the bottom of box, its characterized in that: locking device is being connected to the back seat at the bottom of box still detachable installation, locking device is connected by base and retaining member to the back seat and is constituteed, a pair of chuck, rack, drive gear, lead screw nut mechanism and the adjusting handle that the retaining member set up including the symmetry, every rack all with the chuck integrated into one piece that corresponds, the rack corresponds the meshing with drive gear, lead screw nut mechanism comprises lead screw and guide nut, and both cooperation transmissions, in the one end of lead screw stretched into the left side chuck, and at its tip integrated into one piece stopper, the other end of lead screw stretches out from the right side chuck, and its tip and adjusting handle are connected lead screw department cup joints end spring and spring clamp piece, and spring clamp piece one side butt is at the adjusting handle axle head.

2. The folding trolley as claimed in claim 1, wherein: the box comprises preceding baffle, backplate, left baffle, right baffle and bottom plate, and left and right baffle is articulated with preceding, backplate respectively, and is provided with first draw-in groove in the bottom of left baffle and right baffle, it is provided with first buckle to correspond on the bottom plate, and the bottom plate from last to installing the completion back down, and first buckle corresponds the interior straining of embedding first draw-in groove in proper order.

3. The folding trolley as claimed in claim 2, wherein: the bottom of the left baffle and the bottom of the right baffle are integrally formed with mounting blocks, and the base is provided with first mounting grooves correspondingly matched with the mounting blocks.

4. The folding trolley as claimed in claim 1, wherein: the base is provided with a second mounting groove and a gear mounting position, the gear mounting position is integrally formed with a mounting frame, the chuck is oppositely arranged at the second mounting groove, the transmission gear is correspondingly mounted at the gear mounting position and sleeved on the mounting frame, and the lead screw penetrates through the mounting frame from right to left.

5. The folding trolley as claimed in claim 2, wherein: the left baffle and the right baffle are both composed of a first connecting plate and a second connecting plate, a pair of first hinge parts are formed at the first connecting plate, correspondingly, second hinge parts are formed at the second connecting plate, and the first hinge parts and the second hinge parts are matched to realize the overturning and folding of the connecting plates.

6. The folding trolley as claimed in claim 2, wherein: the both sides of preceding baffle set up the second buckle respectively, correspondingly the backplate department be provided with second buckle complex joint piece, when the pull rod car is in fold condition, the first connecting plate and the inside side upset of second connecting plate of left and right baffle department, preceding, backplate laminate each other, and the second buckle of preceding baffle department corresponds the lock joint on the joint piece of backplate department.

7. The folding trolley as claimed in claim 1, wherein: the clamping device comprises an embedding piece, a compression spring and a pressing piece, wherein the end part of one side of the embedding piece extends to the outer side of the embedding piece from the inner side of the chuck in a clamping mode and is limited, the compression spring is arranged between the embedding piece and the pressing piece, and the pressing piece is connected with the chuck through bolts.