CN219506026U - Barrow - Google Patents

Abstract

The utility model belongs to the technical field of carts, in particular to a cart which comprises a bottom frame and supporting columns which are rotationally connected, wherein a foldable side frame is arranged between every two adjacent supporting columns, at least six supporting columns are arranged on the bottom frame, the supporting columns are respectively arranged on the left side and the right side of the bottom frame, the bottom frame comprises at least two first folding units, each first folding unit comprises a connecting seat and four supporting cross bars, and the four supporting cross bars on the same connecting seat are rotationally connected with the adjacent four supporting columns; the side frame comprises at least one second folding unit, and the second folding unit comprises two cross hinged reinforcing rods; the utility model aims to provide a cart which is convenient for a user to use and has long service life.

Description

Barrow

Technical Field

The utility model belongs to the technical field of carts, and particularly relates to a cart.

Background

In order to facilitate storage and transportation of the cart, a plurality of foldable carts are invented, such as an extendable folding cart disclosed in chinese utility model CN202221970546.6, which comprises a front frame assembly, wherein an extension assembly capable of being folded and stored is arranged at the outer side end of the front frame assembly, the extension assembly comprises two symmetrical and spaced extension supporting rods, and one end of each extension supporting rod is hinged at the lower end of the front frame assembly; clamping pieces are symmetrically arranged on two sides of the front frame assembly, and the extension stay bars can be clamped in the corresponding clamping pieces; a telescopic scissors structure is arranged between the two extension supporting rods, and the scissors structure is far away from the front frame assembly; when the folding and storage are carried out, the extension stay bars are rotated and retracted and clamped on the clamping piece, and the scissor structure and the two extension stay bars are folded towards the middle under the drive of the front frame assembly; the utility model provides an extensible folding handcart, which overcomes the defect of larger volume of the existing handcart after being folded.

However, the folding component of the side frame of the handcart has lower structural strength, and when in use, articles often lean against the middle part of the folding component of the side frame, and the folding component of the side frame is easy to bend, thereby influencing the service life of the handcart; in addition, the length of the vertical stay bar in the structure is longer, so that a user can easily influence the placement of articles in the handcart during use, the handcart is easy to bend accidentally, and the handcart is inconvenient for the user to use.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide the cart which is convenient for a user to use and has long service life.

The purpose of the utility model is realized in the following way:

the trolley comprises a foldable underframe and a plurality of support columns, wherein the support columns are respectively and rotatably connected with the underframe, foldable side frames are movably arranged between adjacent support columns, the side frames and the underframe are combined to form a storage cavity, at least six support columns which are in rectangular distribution are arranged on the underframe, the support columns are divided into two groups and are respectively arranged on the left side and the right side of the underframe, the underframe comprises at least two first folding units, each first folding unit comprises a connecting seat and four support cross bars which are rotatably arranged on the connecting seat, and the four support cross bars on the same connecting seat are rotatably connected with the four adjacent support columns which are in rectangular distribution;

the side frames are arranged between two adjacent supporting columns, and each side frame comprises at least one second folding unit which comprises two reinforcing rods in cross hinge connection;

the support column both ends are fixed to be provided with first mount pad and second mount pad, are provided with the sliding seat between first mount pad and the second mount pad, and the sliding seat slides and sets up on the support column, and the support horizontal pole rotates with first mount pad to be connected, and second mount pad and sliding seat rotate with two stiffener on the second folding unit on the adjacent side bearer respectively to be connected.

Preferably, a hinge groove rotationally connected with the supporting cross rod is formed in the upper portion of the first mounting seat, a supporting wall is arranged at the bottom of the hinge groove, a rotating groove rotationally connected with each supporting cross rod is formed in the lower portion of the connecting seat, a tight supporting wall is arranged above the rotating groove, and when the underframe is unfolded, the tight supporting wall and the supporting wall are respectively abutted against the upper side and the lower side of the supporting rod under the action of gravity.

Preferably, the upper end of the second mounting seat is provided with a supporting surface, the supporting surface is provided with a positioning bulge for mounting the desk plate, the second mounting seat is provided with a mounting hole, and the mounting hole is provided with a fastener connected with the desk plate.

Preferably, the second mounting seat is provided with a plug hole, the desk plate is provided with a plug part matched with the plug hole, the plug part is movably provided with a first elastic buckle matched with the mounting hole, the desk plate is provided with a first elastic buckle, the first elastic buckle is provided with a clamping bulge matched with the mounting hole, the mounting hole is arranged on the side wall of the plug hole, and the end part of the plug hole is provided with a guide inclined plane for driving the clamping bulge to move.

Preferably, the first connecting rods are arranged on the first mounting seats on the two supporting columns at the front end of the underframe in a rotating mode, the second connecting rods are arranged on the first connecting rods in a rotating mode, mounting blocks are arranged between the two second connecting rods and are respectively connected with the two second connecting rods in a rotating mode, a sliding groove is formed in the mounting blocks, a handle is arranged in the sliding groove in a sliding mode, at least two second elastic buckles are arranged on the handle, clamping holes matched with the second elastic buckles are formed in the side walls of the sliding groove, and the second elastic buckles can be separated from the clamping holes under the action of external force.

Preferably, the mounting block is movably provided with a control button and an elastic piece for driving the control button to reset, the control button is provided with a driving rod corresponding to the clamping hole, and the driving rod can penetrate the clamping hole and drive the second elastic buckle to be separated from the clamping hole.

Preferably, the second mounting seat and the sliding seat are both provided with mounting grooves, one end of the reinforcing rod is rotatably arranged in the mounting grooves through bolts, one side of each mounting groove is provided with a countersink, the other side of each mounting groove is provided with a threaded hole, one end of each bolt is connected with the threaded hole, and the other end of each bolt is hidden in each countersink.

Preferably, the side frame comprises two second folding units, and the reinforcing rods on the two second folding units are respectively connected in a rotating mode.

Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

1. according to the utility model, the chassis is provided with at least six supporting columns, the installation strength of the side frame is improved through the supporting connecting rod arranged in the middle of the cart, the side frame is prevented from being bent and damaged in the using process, the service life of the cart is prolonged, and the sliding seat is arranged between the first installation seat and the second installation seat in a sliding manner, so that the supporting columns are prevented from extending to the upper side of the side frame, the supporting columns are prevented from influencing a user to put articles in the cart or take articles from the cart, the use is facilitated, and the bending damage of the supporting columns is prevented.

2. According to the utility model, the supporting wall arranged at the bottom of the hinge groove and the abutting wall arranged above the rotating groove are beneficial to the stable unfolding of the supporting cross rod and the avoidance of accidental folding of the underframe.

3. The arrangement of the supporting surface is favorable for the stable installation of the table plate, and the arrangement of the positioning protrusions and the mounting holes is favorable for the positioning installation of the table plate; the stable installation of table is favorable to being favorable to in the setting of spliced eye, grafting portion, and first bullet is detained and is then favorable to the quick dismantlement installation of table and second mount pad with the direction inclined plane.

4. The arrangement of the first connecting rod, the second connecting rod and the mounting block is beneficial to the stable mounting of the handle, the first connecting rod, the second connecting rod and the mounting block are beneficial to avoiding the influence of the first connecting rod, the second connecting rod and the mounting block on the folding of the cart, and the arrangement of the second elastic buckle is beneficial to the adjustment of the relative position of the handle and the mounting block by a user, so that the handle is convenient for the user to use; the control button and the mounting block of the elastic piece slide relatively, so that a user can conveniently adjust the handle.

5. The installation groove is favorable for stable installation of the side frame, the side frame is prevented from deflecting to the side surface of the trolley or the trolley, the threaded hole is convenient for installing bolts, the trolley is convenient for quick production, the countersunk hole is favorable for preventing the end parts of the bolts from hooking other objects, and the bolts are prevented from being damaged by accidental collision to the second installation seat or the sliding seat.

6. The structure of the two groups of second folding units is beneficial to increasing the length of the trolley and reducing the length of the supporting upright post, and is beneficial to reducing the height of the trolley after folding.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the folded state of the present utility model;

FIG. 3 is a schematic view of the connection structure of the support column and the side frame according to the present utility model;

FIG. 4 is a schematic view of the parts of the chassis and the first mount according to the present utility model;

FIG. 5 is a schematic view of the mounting structure of the handle of the present utility model;

FIG. 6 is a cross-sectional view of a handle mounting structure of the present utility model;

FIG. 7 is a schematic view of a connecting seat according to the present utility model;

FIG. 8 is a schematic view of a first mounting base according to the present utility model;

FIG. 9 is a schematic diagram of a second mounting base according to the present utility model;

FIG. 10 is a second schematic view of a second mounting base according to the present utility model;

FIG. 11 is a schematic view of a sliding seat according to the present utility model;

fig. 12 is a cross-sectional view of a connector in accordance with the present utility model.

In the figure: 1-a first folding unit; 11-connecting seats; 12-supporting a cross bar; 111-a rotating groove; 112-abutting the wall; 2-supporting the upright post; 21-a first mount; 22-a second mount; 23-sliding seat; 211-hinge slots; 212-supporting walls; 213-fixing holes; 221-positioning protrusions; 222-mounting groove; 223-countersink;

224-threaded hole; 225-plug holes; 226-guiding ramp; 227-mounting holes; 228—a support surface; 3-side frames; 31-a second folding unit; 32-reinforcing bars; 4-handle; 41-a second snap; 5-a first link;

51-a second link; 52-mounting blocks; 521-chute; 522—a driving surface; 523—button hole; 524-a clamping hole; 6-a control button; 61-driving rod; 62-clamping hooks; 63-an elastic member; 7-a connector; 71-plug-in parts; 72-positioning grooves; 73-first snap.

Detailed Description

The utility model is further described in the following examples with reference to the accompanying drawings:

referring to fig. 1 to 12, a cart comprises a foldable chassis and a plurality of support columns 2, wherein the support columns 2 are respectively and rotatably connected with the chassis, foldable side frames 3 are movably arranged between adjacent support columns 2, the side frames 3 and the chassis are combined to form a storage cavity, at least six support columns 2 distributed in a rectangular shape are arranged on the chassis, the support columns 2 are divided into two groups and are respectively arranged on the left side and the right side of the chassis, the chassis comprises at least two first folding units 1, each first folding unit 1 comprises a connecting seat 11 and four support cross bars 12 rotatably arranged on the connecting seat 11, and the four support cross bars 12 on the same connecting seat 11 are rotatably connected with the four adjacent support columns 2 distributed in a rectangular shape; be provided with six at least support posts 2 on the chassis, improve the installation strength of side bearer 3 through the support connecting rod that sets up at the shallow middle part, be favorable to avoiding in the use side bearer 3 to buckle and damage, be favorable to prolonging the life of shallow, and two first folding units 1 are favorable to side bearer 3 to the folding shrink in chassis middle part, are favorable to reducing the volume after the shallow is folding.

The side frame 3 is arranged between two adjacent supporting columns 2, the side frame 3 comprises at least one second folding unit 31, and the second folding unit 31 comprises two cross hinged reinforcing rods 32; the two ends of the supporting upright post 2 are fixedly provided with a first mounting seat 21 and a second mounting seat 22, a sliding seat 23 is arranged between the first mounting seat 21 and the second mounting seat 22, the sliding seat 23 is arranged on the supporting upright post 2 in a sliding way, the supporting cross rod 12 is rotationally connected with the first mounting seat 21, the second mounting seat 22 and the sliding seat 23 are respectively rotationally connected with two reinforcing rods 32 on a second folding unit 31 on the adjacent side frame 3, and because sliding seat 23 slides and sets up between first mount pad 21 and second mount pad 22, avoid support column 2 to extend to side frame 3 top, avoid support column 2 to influence the user put article in to the shallow or take article from the shallow, facilitate the use to be favorable to avoiding support column 2 to buckle and damage, all be provided with the fixed orifices 213 of being connected with support column 2 on first mount pad 21 and the second mount pad 22.

In this embodiment, the side frame 3 includes two second folding units 31, and the reinforcing rods 32 on the two second folding units 31 are respectively connected in a rotating manner, so that the structure of the two second folding units 31 is beneficial to increasing the length of the cart and reducing the length of the supporting upright post 2, and is beneficial to reducing the height of the cart after folding.

The first mount pad 21 top is provided with the hinge groove 211 of rotating and being connected with support horizontal pole 12, hinge groove 211 bottom is provided with supporting wall 212, the connecting seat 11 below is provided with the rotary groove 111 of rotating and being connected with each support horizontal pole 12 respectively, the rotary groove 111 top is provided with supports tight wall 112, when the chassis is expanded, supports tight wall 112 and supporting wall 212 under the action of gravity and supports respectively and leans on the bracing piece upper and lower both sides, the supporting wall 212 of setting in hinge groove 211 bottom and the tight wall 112 of supporting of setting in the rotary groove 111 top are favorable to the stable expansion of support horizontal pole 12 to be favorable to avoiding the unexpected folding of chassis, facilitate the use of user.

According to the utility model, the second mounting seat 22 and the sliding seat 23 are both provided with the mounting groove 222, one end of the reinforcing rod 32 is rotatably arranged in the mounting groove 222 through the bolts, one side of the mounting groove 222 is provided with the countersunk hole 223, the other side of the mounting groove 222 is provided with the threaded hole 224, one end of the bolts is connected with the threaded hole 224, the other end of the bolts is hidden in the countersunk hole 223, the mounting groove 222 is beneficial to stably mounting the side frame 3, the side frame 3 is prevented from deflecting to the side surface of the trolley or the trolley, the threaded hole 224 is convenient for mounting the bolts, the quick production of the trolley is convenient, and the countersunk hole 223 is beneficial to preventing the end parts of the bolts from hooking other objects, and the bolts are beneficial to being prevented from being damaged by accidental collision to the second mounting seat 22 or the sliding seat 23.

The upper end of the second mounting seat 22 is provided with a supporting surface 228, the supporting surface 228 is provided with a positioning protrusion 221 for mounting the desk plate, the second mounting seat 22 is provided with a mounting hole 227, the mounting hole 227 is provided with a fastener supporting surface 228 connected with the desk plate, the positioning protrusion 221 and the mounting hole 227 are provided with a positioning protrusion for the desk plate, the complete desk plate is not shown in the drawings of the utility model, only the connector 7 connected with the second mounting seat 22 on the desk plate is shown, and the connector 7 is provided with a positioning groove 72 matched with the positioning protrusion 221.

In this embodiment, be provided with six support posts 2 on the chassis, be located the second mount pad 22 on the support post 2 in shallow four corners and be connected with connector 7 can be dismantled, and only have the location arch 221 on two mount pads at the chassis middle part, be provided with the spliced eye 225 on the second mount pad 22 on the support post 2 in shallow four corners, be provided with on the table with spliced eye 225 adaptation grafting portion 71, the activity is provided with the first bullet knot 73 with the mounting hole 227 adaptation on grafting portion 71, be provided with first bullet knot 73 on the table, be provided with the joint arch with the mounting hole 227 adaptation on the first bullet knot 73, the spliced eye 225, the setting of grafting portion 71 is favorable to the stable installation of table, the setting of first bullet knot 73 is favorable to the quick dismantlement installation of table and second mount pad 22.

Preferably, the mounting hole 227 is disposed on a side wall of the plugging hole 225, and a guiding inclined plane 226 for driving the clamping protrusion to move is disposed at an end of the plugging hole 225, and the guiding inclined plane 226 can drive the first elastic buckle 73 to deform and automatically match the first elastic buckle 73 with the mounting hole 227.

The first connecting rods 5 are rotatably arranged on the first mounting seats 21 on the two supporting columns 2 at the front end of the underframe, the second connecting rods 51 are rotatably arranged on the first connecting rods 5, the mounting blocks 52 are arranged between the two second connecting rods 51, the mounting blocks 52 are respectively rotatably connected with the two second connecting rods 51, the sliding grooves 521 are arranged on the mounting blocks 52, the handles 4 are slidably arranged in the sliding grooves 521, at least two second elastic buckles 41 are arranged on the handles 4, the clamping holes 524 matched with the second elastic buckles 41 are formed in the side walls of the sliding grooves 521, the second elastic buckles 41 can be separated from the clamping holes 524 under the action of external force, the stable installation of the handles 4 is facilitated by the first connecting rods 5, the second connecting rods 51 and the mounting blocks 52, the folding of the pushing cart is prevented from being influenced by the first connecting rods 5, the second connecting rods 51 and the mounting blocks 52, and the second elastic buckles 41 are arranged, the relative positions of the handles 4 and the mounting blocks 52 are adjusted by a user, and the user can conveniently use the push cart.

In the present utility model, the mounting block 52 is movably provided with the control button 6 and the elastic member 63 for driving the control button 6 to reset, the control button 6 is provided with the driving rod 61 corresponding to the clamping hole 524, the driving rod 61 can penetrate into the clamping hole 524 and drive the second elastic buckle 41 to separate from the clamping hole 524, the control button 6 and the mounting block 52 of the elastic member 63 slide relatively, which is convenient for a user to adjust the handle 4, preferably, the end of the chute 521 is provided with an inclined driving surface 522, when the handle 4 slides relatively with the mounting block 52, the driving surface 522 can drive the second elastic buckle 41 to deform, thereby the second elastic buckle 41 can be matched with the clamping hole 524 rapidly, the mounting hole 52 is provided with a button hole 523 for mounting the control button 6, the button hole 523 is located at one side of the clamping hole 524, the control button 6 is provided with at least two hooks 62, and the elastic member 63 drives the hooks 62 to abut against the end of the button hole 523.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a shallow, includes folding chassis and a plurality of support post (2), and support post (2) are connected with the chassis rotation respectively, and the activity is provided with folding side bearer (3) between adjacent support post (2), and side bearer (3) and chassis combination form storing chamber, its characterized in that: six support columns (2) which are in rectangular distribution are arranged on the underframe, the support columns (2) are divided into two groups and are respectively arranged on the left side and the right side of the underframe, the underframe comprises at least two first folding units (1), each first folding unit (1) comprises a connecting seat (11) and four support cross bars (12) which are rotatably arranged on the connecting seat (11), and the four support cross bars (12) on the same connecting seat (11) are rotatably connected with the four adjacent support columns (2) which are in rectangular distribution;

the side frames (3) are arranged between two adjacent supporting columns (2), the side frames (3) comprise at least one second folding unit (31), and the second folding unit (31) comprises two cross-hinged reinforcing rods (32);

the support column (2) both ends are fixed to be provided with first mount pad (21) and second mount pad (22), are provided with sliding seat (23) between first mount pad (21) and second mount pad (22), and sliding seat (23) slide and set up on support column (2), and support horizontal pole (12) are connected with first mount pad (21) rotation, and second mount pad (22) and sliding seat (23) are connected with two stiffener (32) rotation on a second folding unit (31) on adjacent side bearer (3) respectively.

2. A cart according to claim 1, wherein: the utility model discloses a support rod, including first mount pad (21), articulated slot (211) that is provided with support horizontal pole (12) rotation and is connected, articulated slot (211) bottom is provided with supporting wall (212), and connecting seat (11) below is provided with rotation groove (111) that are connected with each support horizontal pole (12) rotation respectively, and rotation groove (111) top is provided with supports tight wall (112), and when the chassis was expanded, supports tight wall (112) and supporting wall (212) under the action of gravity supported respectively and leans on the bracing piece upper and lower both sides.

3. A cart according to claim 1 or 2, wherein: the upper end of the second installation seat (22) is provided with a supporting surface (228), a positioning protrusion (221) for installing the desk plate is arranged on the supporting surface (228), the second installation seat (22) is provided with an installation hole (227), and the installation hole (227) is provided with a fastener connected with the desk plate.

4. A cart according to claim 3, wherein: be provided with spliced eye (225) on second mount pad (22), be provided with on the table with spliced eye (225) adaptation grafting portion (71), activity be provided with on grafting portion (71) with mounting hole (227) adaptation first bullet knot (73), be provided with on the table first bullet knot (73), be provided with on first bullet knot (73) with mounting hole (227) adaptation joint arch, and mounting hole (227) set up on spliced eye (225) lateral wall, spliced eye (225) tip is provided with drive joint protruding guide slope (226) of moving.

5. A cart according to claim 1, 2 or 4, wherein: the novel lifting device is characterized in that first connecting rods (5) are rotatably arranged on first mounting seats (21) on two supporting columns (2) at the front end of the underframe, second connecting rods (51) are rotatably arranged on the first connecting rods (5), mounting blocks (52) are arranged between the two second connecting rods (51), the mounting blocks (52) are rotatably connected with the two second connecting rods (51) respectively, sliding grooves (521) are formed in the mounting blocks (52), handles (4) are slidably arranged in the sliding grooves (521), at least two second elastic buckles (41) are arranged on the handles (4), clamping holes (524) matched with the second elastic buckles (41) are formed in the side walls of the sliding grooves (521), and the second elastic buckles (41) can be separated from the clamping holes (524) under the action of external force.

6. A cart according to claim 5, wherein: the mounting block (52) is movably provided with a control button (6) and an elastic piece (63) for driving the control button (6) to reset, the control button (6) is provided with a driving rod (61) corresponding to the clamping hole (524), and the driving rod (61) can penetrate the clamping hole (524) and drive the second elastic buckle (41) to be separated from the clamping hole (524).

7. A cart according to claim 1 or 2 or 4 or 6, wherein: the second mounting seat (22) and the sliding seat (23) are both provided with mounting grooves (222), one end of the reinforcing rod (32) is rotatably arranged in the mounting grooves (222) through bolts, one side of each mounting groove (222) is provided with a countersunk hole (223), the other side of each mounting groove (222) is provided with a threaded hole (224), one end of each bolt is connected with the threaded hole (224), and the other end of each bolt is hidden in each countersunk hole (223).

8. A cart according to claim 7, wherein: the side frames (3) comprise two second folding units (31), and reinforcing rods (32) on the two second folding units (31) are respectively connected in a rotating mode.