CN111038564A

CN111038564A - Six-wheel hand cart

Info

Publication number: CN111038564A
Application number: CN201911360280.6A
Authority: CN
Inventors: 邓建文
Original assignee: Wen Fa Wang
Current assignee: Wen Fa Wang
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-04-21

Abstract

The invention discloses a six-wheel cart, which comprises a carrying plate, a telescopic carrying plate, a push handle and trundles, wherein the push handle and the trundles are arranged on the carrying plate, the push handle comprises a sleeve pipe connected with the carrying plate and a telescopic pull pipe sleeved in the sleeve pipe, and the upper end of the telescopic pull pipe is provided with a handle, and the six-wheel cart is characterized in that: the handle inner space is provided with a pressing linkage mechanism, and the lower end parts of the telescopic pull tubes are respectively provided with a bead locking mechanism which is locked and matched with the adjacent tube bodies. The push-pull handle assembly has the advantages of compact and reasonable integral structure, convenient and quick locking and unlocking actions due to the adoption of the unique wave bead locking mechanism, better control performance, firmness and reliability, and long service life, and the stretching tube assembly cannot shake after the push-pull handle assembly is completely unfolded or folded.

Description

Six-wheel hand cart

Technical Field

The invention relates to the technical field of carrying and transporting equipment, in particular to a six-wheel handcart.

Background

At present, in airports, stations, traveling or shopping, etc., when large or more objects or luggage need to be moved, conveying tools such as trolleys and luggage carts are generally used, but when the large objects need to be moved, the large conveying tools are inconvenient for users to carry, the users need to manually carry the large objects, and the luggage carts are required to solve the problem of transportation of the large objects in order to meet the requirements of consumers. The utility model relates to a carry thing board can be according to the size extension or the shrink of consumer's article, and the push-and-pull hand is equipped with push-and-pull locking mechanical system, can push perpendicularly also can put to lean forward the handcart that draws to one side. Simple and practical structure and novel and beautiful design. Wherein, for convenient use and storage, the carrying plate of the trolley is a whole plate, which is inconvenient to carry, and the push-pull hand-pull tube is also designed to be a telescopic structure.

However, due to the structural design deficiency, the pull tube of the current handcart sold on the market has different operation difficulty levels such as locking and unlocking during the telescopic action, and the pull tube is composed of a plurality of telescopic sections, so the matching tightness between the telescopic sections is not high, and particularly, the pull tube still shakes after being completely folded, so the pull tube is not firm and reliable enough.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, the operation such as locking and unlocking is difficult and easy during the telescopic action of a pull pipe of a handcart, and the matching tightness between telescopic joints is not high because the pull pipe is composed of a plurality of telescopic joints.

In order to achieve the purpose, the invention adopts the following technical scheme:

six rounds of handcarts, including carrying the thing board, flexible year thing board and setting up in the push handle, the truckle of carrying the thing board, the push handle including with carry the sleeve pipe that the thing board is connected, reach to the flexible trombone slide of cover locating in the sleeve pipe, flexible trombone slide upper end is provided with handle, its characterized in that: the handle inner space is provided with a pressing linkage mechanism, and the lower end parts of the telescopic pull tubes are respectively provided with a bead locking mechanism which is locked and matched with the adjacent tube bodies.

Preferably, the pressing linkage mechanism comprises a button switch, a pressing rod, a connecting guide block, a reset spring and a driving rod, wherein the button switch, the pressing rod and the reset spring are located inside the handle, the pressing rod is connected and matched with the button switch, the reset spring is located between the pressing rod and the inner wall of the handle, the driving rod is located inside the small telescopic pull tube, the upper end of the driving rod is rigidly connected and matched with the pressing rod through the connecting guide block, and the lower end of the driving rod is provided with a collision block.

Preferably, the push handle comprises a push handle fixing sleeve, a pull-down tube and a telescopic pull tube which are sequentially matched in a sleeved mode, a protective positioning sleeve is arranged on an upper edge opening of the pull-down tube, and a fixing ring which is tightly matched with the fixing ring is arranged on the outer wall of the bottom of the telescopic pull tube.

Preferably, flexible pipe ripples pearl locking mechanical system is including lock seat, lockpin, ripples pearl and spring, the lock seat just is provided with the round hole that supplies ripples pearl part to expose with the lower bead grafting cooperation of flexible trombone slide, the lockpin is located the lock seat and the upper end stretches out the lock seat, and the lower tip is provided with and supports the stepped surface that contacts from top to bottom progressively evagination with ripples pearl top, and the ripples pearl is located between hole and the lockpin stepped surface that the lock seat lateral wall corresponds with the ripples pearl, and the spring is located between lock seat inner bottom and the lockpin bottom.

Preferably, the push-pull hand has two adjusting methods: the push-pull hand button switch, the lock rod and the double-coil position spring are positioned at the rear lower part of the object carrying plate, the push-pull hand button switch is fixed on the lock rod to be connected and matched, the double-coil position spring penetrates through the lock rod and is buckled with a button on the inner wall of the rear bottom of the object carrying plate, the lock rod penetrates through the object carrying plate positioning frame, and the push-pull hand is fixed through a gap of the push-pull fixing seat.

Preferably, the object carrying plate, the connecting pipe and the expansion plate are sequentially in sleeve fit, the object carrying plate is provided with a bead locking mechanism along the abutting positioning sleeve of the connecting pipe, and the bead locking mechanism comprises an underframe lock pin, beads, a lock pin pressing sheet, a connecting pipe, a spring and a square frame hidden in the locking mechanism. The side surface of the inward direction of the square frame is provided with a round hole hidden in the wavy bead, the lock pin is positioned in the square frame, the upper pin part extends out of the square frame and is pressed and fixed by a lock pin pressing sheet, the side surface of the lower end of the lock pin is provided with a stepped surface which is abutted against the wavy bead and is contacted with the wavy bead and gradually protrudes outwards from top to bottom, the wavy bead is positioned between the hole of the square frame of the side wall of the lock pin, which corresponds to the wavy bead, and the stepped surface of the lock pin, and the spring is.

Has the advantages that:

1, the invention has compact and reasonable integral structure, adopts a unique wave bead locking mechanism, is convenient and rapid to lock and unlock, and has better control performance;

2, after the push-pull hand assembly is completely unfolded or folded, the stretching tube assembly cannot shake, and the push-pull hand assembly is firm and reliable and has long service life.

3, the telescopic loading plate adopts a novel telescopic wave bead locking mechanism structure, and has the advantages of simple and compact structure, few parts, convenient and easy assembly, quick operation, cost reduction and better market prospect.

Drawings

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

FIG. 2 is a schematic view of a push-pull hand of the present invention;

FIG. 3 is a schematic view of a carrier plate according to the present invention;

FIG. 4 is a schematic view of a retractable carrier plate according to the present invention;

FIG. 5 is an exploded view of the push-pull handle of the present invention;

FIG. 6 is a cross-sectional view of the push-pull handle of the present invention;

FIG. 7 is a schematic view of the push-pull lower hand unlock of the present invention;

FIG. 8 is an exploded view of the release lever of the present invention;

FIG. 9 is a schematic view of an unlocking structure of the expansion plate of the present invention;

FIG. 10 is an exploded view of the retractable plate of the present invention;

FIG. 11 is an exploded view of the release lever of the present invention;

FIG. 12 is a cross-sectional view of the push-pull hand of the present invention shown in an unlocked position;

FIG. 13A is an internal view of the locking position of the push-pull handle of the present invention;

FIG. 13B is a schematic view of the external structure of the locking position of the push-pull handle according to the present invention;

FIG. 14 is a schematic view of the structure of the push-pull hand bead according to the present invention.

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.

Referring to fig. 1-13, the six-wheel cart comprises a carrying plate 1, a telescopic carrying plate 2, a push handle and casters, wherein the push handle and casters are arranged on the carrying plate, the push handle assembly comprises a pull-down tube 4 and a telescopic pull tube 5 which are fixedly connected with a push handle fixing seat, the pull-down tube 4, a protective positioning sleeve 28 and the telescopic pull tube 5 are sequentially sleeved and matched, a protective sleeve 28 is arranged at the edge of the pull-down tube 4, and a positioning ring 17 tightly matched with the fixed sleeve is arranged on the outer wall of the bottom of the telescopic pull tube 5.

In this embodiment, a pressing linkage mechanism is disposed in an inner space formed by the handle 92 and the telescopic pull tube 5 and disposed above the telescopic pull tube 5, and the pressing linkage mechanism includes a button switch 10, a pressure lever 11, a connecting guide block 8, a return spring 12 and a driving lever 14, wherein the button switch 10, the pressure lever 11 and the return spring 12 are disposed inside the handle, the pressure lever 11 is connected and matched with the button switch 10, the return spring 12 is disposed between the pressure lever 11 and an inner wall of the handle 92, the driving lever 14 is disposed inside the small telescopic pull tube, an upper end of the driving lever is rigidly connected and matched with the pressure lever 11 through the connecting guide block 8, and a lower end of the driving lever is provided with a.

In this embodiment, the positioning ring 17 on the lower sleeve of the small telescopic pull tube 5 is provided with a bead locking mechanism, which comprises a

lock seat

181, 182, a lock pin 183, a bead 185 and a spring 184, wherein the lock seat 181 is in plug fit with the lower edge of the telescopic pull tube 5 and is provided with a round hole for exposing the bead 185, the lock pin 183 is located in the lock seat 181, the upper end of the lock pin is extended out of the lock seat 181, the lower end of the lock pin is provided with a stepped surface 186 which is in contact with the bead 185 and gradually protrudes outward from top to bottom, the bead 185 is located between the hole of the side wall of the lock seat 181 corresponding to the bead and the stepped surface 186 of the lock pin, and the spring 184 is located between the inner bottom of the upper lock seat 183 and the bottom.

In this embodiment, the push-pull hand locking mechanism has two adjustment methods: the mechanism comprises a push-pull hand button connecting machine, a push-pull hand button 7, a lock rod 15, a double-ring tension spring 27 and a push-pull hand fixing seat 6, wherein the push-pull hand button switch, the lock rod and the double-ring position spring are positioned at the rear lower part of an object carrying plate. The push-pull button switch is fixed on the lock rod 15 to be connected and matched, the double-coil position spring 27 penetrates through the lock rod and is buckled with the button 26 on the inner wall of the rear bottom of the object carrying plate, the lock rod penetrates through the positioning frame 24 (the side chute 16) of the object carrying plate, and the push-pull button switch is fixed on the push-pull fixing seat 6 through a gap.

In this embodiment, the locking mechanism of the telescopic carrier plate includes a base frame locking pin 20, a ball 203, a locking pin pressing plate, a connecting tube 3, a spring 202 and a block 204 hidden in the locking mechanism. Wherein, the side surface of the block 204 in the inward direction is provided with a round hole 22 hidden in the bead 203. The lock pin 20 is positioned in the frame 204, the upper pin part extends out of the frame and is pressed by the lock pin pressing sheet 205, the side surface of the lower end is provided with a stepped surface 201 which is abutted against the wavy bead 203 and gradually protrudes outwards from top to bottom, the wavy bead 203 is positioned between the hole 22 of the frame corresponding to the wavy bead on the side wall of the lock pin and the stepped surface 201 of the lock pin, and the spring 202 is positioned between the inner bottom hole of the lock pin of the underframe and the bottom of the frame.

In this embodiment, the push-pull telescopic tube assembly is locked: when the telescopic pipe is completely opened, the wave beads 203 of the wave bead locking mechanism are clamped in the corresponding holes of the lower pull pipe 4, and the lower pull pipe 4 and the telescopic pull pipe 5 are locked; when the push-pull hand tube assembly needs to be retracted, the button switch 10 is pressed down, the button switch 10 drives the driving rod 14 to move downwards through the pressing rod 11, the collision block 13 at the lower end of the driving rod 14 collides with the lock pin 20 of the bead locking mechanism, the lock pin 20 compresses the spring to move downwards, and the stepped surface of the lock pin 20 protrudes downwards, so that the beads 203 have a backward clearance in the downward movement process of the lock pin 20, the corresponding opening holes are withdrawn, the telescopic pull tube 5 loses the locking effect of the pull tube 4, and the telescopic pull tube can smoothly move downwards.

In this embodiment, the push-pull hand extension tube assembly unlocks: when the telescopic pull pipe assembly needs to be unlocked, the button switch 10 is pressed down, the button switch 10 drives the driving rod 14 to move downwards through the pressing rod 11, the collision block at the lower end of the driving rod 14 drives the lock pin 20 to move downwards, and the stepped surface of the lock pin 20 protrudes downwards from top to bottom, so that in the downward movement process of the lock pin 20, the beads 203 have a backward clearance, so that the perforated hole at the lower end of the corresponding middle pull pipe can be withdrawn, the telescopic pull pipe 5 can be pulled out, and because the upper edge of the pull pipe 4 is provided with the protective positioning sleeve 28, the outer wall of the bottom of the telescopic pull pipe 5 is provided with the fixing ring 17 tightly matched with the fixing sleeve, so that the telescopic pull pipe assembly cannot shake when being unfolded or contracted, and is firm and reliable.

In this embodiment, the push handle is locked: the lower end of the pull-down tube is sleeved with a push handle fixing seat 6, two side faces of the lower portion of the pull-down tube are provided with through holes which are concentric with through holes formed in the push handle fixing seat, the through holes penetrate through fixing screws 26, the fixing screws are determined by the positions, on the back of the object carrying plate 1, of the push handle, the fixing grooves of the push handle fixing seat 23 are arranged at the bottom of the push handle, the push handle fixing seat pushes open a lock rod 15 when the push handle vertically moves downwards, the lock rod is pressed to deflect backwards and downwards, the lock rod moves downwards to the bottom of the push handle and is overlapped with an inclined notch of the push handle fixing seat to be clamped due to the fact that the push handle moves downwards along a lock sliding groove 16 under the action.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Six rounds of handcarts, including carrying thing board (1), flexible year thing board (2) and setting up in push handle, the truckle of carrying thing board (1), the push handle including with carry the sleeve pipe that thing board (1) is connected, reach to the cover locate telescopic stay tube (5) in the sleeve pipe, telescopic stay tube (5) upper end is provided with handle (92), its characterized in that: the inner space of the handle (92) is provided with a pressing linkage mechanism, and the lower end parts of the telescopic pull tubes (5) are respectively provided with a bead locking mechanism which is locked and matched with the adjacent tube bodies.

2. The six-wheeled hand cart of claim 1, wherein: the pressing linkage mechanism comprises a button switch (10), a pressing rod (11), a connecting guide block (8), a reset spring (12) and a driving rod (14), wherein the button switch (10), the pressing rod (11) and the reset spring (12) are located inside the handle, the pressing rod (11) is connected and matched with the button switch (10), the reset spring (12) is located between the pressing rod (11) and the inner wall of the handle (92), the driving rod (14) is located inside a small telescopic pull pipe, the upper end of the driving rod is rigidly connected and matched with the pressing rod (11) through the connecting guide block (8), and the lower end of the driving rod is provided with a collision block (13).

3. The six-wheeled cart according to claim 2, wherein: the push handle comprises a push handle fixing sleeve (6), a lower pull pipe (4) and a telescopic pull pipe (5) which are sequentially sleeved and matched, a protective positioning sleeve (28) is arranged on an upper edge opening of the lower pull pipe, and a fixing ring (17) tightly matched with the fixing ring is arranged on the outer wall of the bottom of the telescopic pull pipe.

4. The six-wheeled hand cart of claim 3, wherein: the telescopic tube wave bead locking mechanism comprises a lock seat (181), (182), a lock pin (183), wave beads (185) and a spring (184), wherein the lock seat (181) is matched with the lower edge of a telescopic pull tube (5) in an inserting manner and is provided with a round hole for exposing the wave beads (185) partially, the lock pin (183) is positioned in the lock seat (181), the upper end of the lock pin extends out of the lock seat (181), the lower end of the lock pin is provided with a stepped surface (186) which is abutted to the wave beads (185) and gradually protrudes downwards, the wave beads (185) are positioned between holes corresponding to the side wall of the lock seat (181) and the stepped surface (186), and the spring (184) is positioned between the inner bottom of the upper lock seat (183) and the bottom of the lock pin (181).

5. The six-wheeled hand cart of claim 4, wherein: the push-pull hand has two adjusting methods: the first type can be vertical to make things convenient for the shallow, and the second type can also incline forward (30) degree angle and make things convenient for in the pulling a cart, and this mechanism push-and-pull hand button link gear, push-and-pull handle button (7), locking lever (15), two rings of extension springs (27) and push-and-pull hand fixing base (6), push-and-pull hand button switch, locking lever and two rings of position spring are located and carry thing board rear lower part, push-and-pull handle button switch is fixed in locking lever (15) and connects the cooperation, and two rings of position spring (27) are worn in locking lever and are carried thing board rear bottom inner wall and are detained (26) mutually, and the locking lever is worn and is carried thing board locating frame (24), and it is fixed the push.

6. The six-wheeled hand cart of claim 5, wherein: the loading plate (1), the connecting pipe (3) and the expansion plate are in sleeve fit in sequence, the loading plate is provided with a bead locking mechanism along the abutting positioning sleeve of the connecting pipe, and the bead locking mechanism comprises an underframe lock pin (20), beads (203), a lock pin pressing sheet, a connecting pipe (3), a spring (202) and a square frame (204) hidden in the locking mechanism. The side surface of the inward direction of the square frame (204) is provided with a round hole (22) hidden in a bead (203), the lock pin (20) is positioned in the square frame (204), the upper pin part extends out of the square frame and is pressed by a lock pin pressing sheet (205), the side surface of the lower end is provided with a stepped surface (201) which is abutted against the bead (203) and is contacted with the bead (203) and gradually protrudes outwards from top to bottom, the bead (203) is positioned between the round hole (22) of the square frame of the side wall of the lock pin corresponding to the bead and the stepped surface (201) of the lock pin, and the spring (202) is positioned between the inner bottom hole of the lock pin of.