CN217260111U

CN217260111U - Rotatable folding four-wheel cart

Info

Publication number: CN217260111U
Application number: CN202122305640.1U
Authority: CN
Inventors: 刘卫国
Original assignee: Zhongshan Qunnb Medical Equipment Co ltd
Current assignee: Zhongshan Qunnb Medical Equipment Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-08-23
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a rotatable folding four-wheel cart, including the chassis, the upper end outside of chassis is equipped with the swivel nut, the upper end outside of chassis rotates through the swivel nut and is connected with branch, the offside of branch rotates respectively and is connected with first hack lever and second hack lever, the middle part offside of first hack lever and second hack lever is connected for rotating, the equal fixedly connected with die-pin in upper end of first hack lever and second hack lever, the equal fixedly connected with tray of offside outer wall of branch, die-pin and tray are swing joint, the offside fixedly connected with seatpad of die-pin, the lower extreme of branch has the connecting block through screw fixed mounting. The above structure is adopted in the utility model, through set up pivoted branch in the chassis upper end, the branch offside sets up pivoted first hack lever and second hack lever respectively, and first hack lever and second hack lever middle part offside rotate to be connected, and the setting of cooperation tray and die-pin can transversely be folded the automobile body, and the convenience is accomodate the shallow and is carried.

Description

Rotatable folding four-wheel cart

Technical Field

The utility model belongs to the technical field of folding car, in particular to rotatable folding four-wheel cart.

Background

The handcart can be divided into a single wheel, two wheels, three wheels and four wheels. The monocycle can run on a narrow gangway, an excrement bridge and a small sheep intestine road, can turn on site, and is very convenient to dump goods. Commonly used two-wheeled vehicles include hand trucks for carrying finished goods, trolley trucks, and hopper trucks for carrying bulk materials. One of the three-wheeled hand trucks and two of the four-wheeled hand trucks are provided with swivel casters which can swivel around a vertical axis. The swivel caster can automatically adjust to the direction with the minimum running resistance along with the change of the moving direction of the vehicle during running.

However, the existing four-wheel cart has certain limitation in the using process, the four-wheel cart chamber is very convenient in application, but the storage space is relatively occupied, and the carrying is inconvenient.

SUMMERY OF THE UTILITY MODEL

To the problem mentioned in the background art, the utility model aims at providing a rotatable folding four-wheel cart to solve the inconvenient problem that carries occupation space of traditional four-wheel cart.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a four-wheel cart capable of rotating and folding, includes the chassis, the upper end outside of chassis is equipped with the swivel nut, the upper end outside of chassis rotates through the swivel nut and is connected with branch, the offside of branch rotates respectively and is connected with first hack lever and second hack lever, the middle part offside of first hack lever and second hack lever is for rotating the connection, the equal fixedly connected with die-pin in upper end of first hack lever and second hack lever, the equal fixedly connected with tray block of offside outer wall of branch, tray block and tray block are swing joint, the offside fixedly connected with seatpad of tray block, the lower extreme of branch has the connecting block through screw fixed mounting, the lower extreme of chassis is equipped with the card firmware, the lower extreme of chassis passes through card firmware and connecting block swing joint.

Through adopting above-mentioned technical scheme, through setting up pivoted branch in the chassis upper end, the branch offside sets up first hack lever of pivoted and second hack lever respectively, and first hack lever and second hack lever middle part offside rotate to be connected, and the setting of cooperation tray and die-pin can transversely be folded the automobile body, and the branch is connected through connecting block and chassis rotation down, and the connecting block lower extreme is fixed with the card fastener joint of chassis lower extreme again simultaneously, can conveniently carry out vertically folding.

Further, as a preferred technical scheme, the clamping member includes a position hole, the position hole is formed in the upper end of the base frame, a screw block is fixedly connected to the lower end of the base frame, a push rod is connected to the lower end of the screw block through threads, a spring is arranged inside the position hole, a bolt is arranged inside the position hole, the outer portion of the upper end of the bolt is fixedly connected with the spring, the lower end of the bolt is movably connected with the push rod, and the upper end of the bolt is connected with the lower end of the connecting block in an inserting mode.

Through adopting above-mentioned technical scheme, through setting up the card firmware, branch passes through the connecting block and rotates to the chassis upper end after, rotating push rod and spiral shell piece are fixed to make the bolt upwards insert in the connecting block in the position hole, and the bolt can stimulate the spring simultaneously, can make the connecting block fix in the chassis upper end, when folding, only need to follow the spiral shell piece with the push rod and unscrew for the bolt is under the spring effect that resets, is deviate from the connecting block, can rotate the connecting block on the branch and carry out vertical folding.

Further, as a preferred technical scheme, the lower end of the connecting block is fixedly connected with a clamping hole, and the upper end of the plug pin is in plug-in connection with the lower end of the clamping hole.

Through adopting above-mentioned technical scheme, through set up the card hole on the connecting block, can make things convenient for the bolt to insert connecting block internal fixation perpendicularly.

Further, as preferred technical scheme, the upper end handrail portion of branch is equipped with the rubber sleeve, the outside of rubber sleeve is equipped with the through-hole.

By adopting the technical scheme, the rubber sleeve with the through hole is arranged, so that the abrasion to the palm when the cart is pushed can be conveniently reduced, and a certain anti-skidding effect is achieved.

Further, as a preferred technical scheme, the rod shape of the supporting rod is matched with the placing opening of the supporting block.

Through adopting above-mentioned technical scheme, through the pole shape setting with the die-pin and the mouthful adaptation of placing of tray, can be after the expansion the die-pin can be stable put into on the tray.

Further, as a preferred technical scheme, a positioning plate is arranged outside the connecting block.

Through adopting above-mentioned technical scheme, through setting up the locating plate on the connecting block, can rotate to the frame in-process at the connecting block and play the guide effect, convenient follow-up fixed to the connecting block.

To sum up, the utility model discloses mainly have following beneficial effect:

firstly, a rotating support rod is arranged at the upper end of the underframe, a rotating first frame rod and a rotating second frame rod are respectively arranged on opposite sides of the support rod, the middle parts of the first frame rod and the second frame rod are rotatably connected on opposite sides, and a trolley body can be transversely folded by matching the arrangement of a support block and a support rod, so that the trolley is convenient to store and carry;

second, branch passes through the connecting block and rotates behind the chassis upper end, rotating push rod and spiral shell piece are fixed to make the bolt upwards insert the connecting block in the position hole, the bolt can stimulate the spring simultaneously, can make the connecting block fix in the chassis upper end, when folding, only need to follow the spiral shell piece with the push rod and revolve down, make the bolt under the spring effect that resets, deviate from on the connecting block, connecting block on the branch can be rotated and vertically folded, thereby can further carry out the swivelling joint to the shallow, reduce occupation space, it is more convenient to make and carry.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic view of the internal structure of the fastener of the present invention;

fig. 3 is an expanded front structure view of the present invention;

fig. 4 is an expanded left side view of the present invention;

fig. 5 is a left side view of the utility model;

fig. 6 is a schematic drawing of the furling front structure of the present invention.

Reference numerals: 1. the screw sleeve comprises a screw sleeve body, 2, a clamping piece, 201, a position hole, 202, a bolt, 203, a screw block, 204, a push rod, 205, a spring, 3, a through hole, 4, a support rod, 5, a seat cushion, 6, a supporting block, 7, a connecting block, 8, a clamping hole, 9, an underframe, 10, a rubber sleeve, 11, a first frame rod, 12, a second frame rod, 13, a supporting rod, 14 and a positioning plate.

Detailed Description

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

Example 1

Referring to fig. 1 to 6, the four-wheeled cart capable of being rotatably folded according to the present embodiment includes a bottom frame 9, a threaded sleeve 1 is disposed on an outer portion of an upper end of the bottom frame 9, a supporting rod 4 is rotatably connected to an outer portion of the upper end of the bottom frame 9 through the threaded sleeve 1, a first frame rod 11 and a second frame rod 12 are rotatably connected to opposite sides of the supporting rod 4, opposite sides of middle portions of the first frame rod 11 and the second frame rod 12 are rotatably connected, upper ends of the first frame rod 11 and the second frame rod 12 are fixedly connected with a supporting rod 13, opposite side outer walls of the supporting rod 4 are fixedly connected with a supporting block 6, the supporting rod 13 and the supporting block 6 are movably connected, opposite sides of the supporting rod 13 are fixedly connected with a seat cushion 5, a connecting block 7 is fixedly mounted at a lower end of the supporting rod 4 through a screw, a clamping member 2 is disposed at a lower end of the bottom frame 9, and the lower end of the bottom frame 9 is movably connected through the clamping member 2 and the connecting block 7; a tether is arranged on the opposite side of the underframe 9, so that the two underframe 9 can be further fixed in the storage process; the rubber sleeve 10 is arranged at the armrest part at the upper end of the supporting rod 4, the through hole 3 is arranged outside the rubber sleeve 10, and the rubber sleeve 10 with the through hole 3 is arranged, so that the abrasion of the palm when the cart is pushed can be conveniently reduced, and a certain anti-skidding and anti-abrasion effect is achieved; the outside of connecting block 7 is equipped with locating plate 14, sets up locating plate 14 on connecting block 7, can rotate 9 in-processes at connecting block 7 to the chassis and play the guide effect, and convenient follow-up fixing to connecting block 7.

Through set up pivoted branch 4 in chassis 9 upper end, 4 offsides of branch set up first hack lever 11 of pivoted and second hack lever 12 respectively, first hack lever 11 and second hack lever 12 middle part offsides rotate to be connected, cooperation tray 6 and the setting of die-pin 13, can transversely fold the automobile body, branch 4 rotates through connecting block 7 and chassis 9 down to be connected simultaneously, 7 lower extremes of connecting block are fixed with the card firmware 2 joint of chassis 9 lower extreme again, can effectually solve the inconvenience of four-wheel cart and carry and occupy the problem of placing space.

Example 2

Referring to fig. 2, on the basis of embodiment 1, in order to achieve the purpose of conveniently fixing the connection block 7, the present embodiment has an innovative design for the fastening member 2, specifically, the fastening member 2 includes a position hole 201, the position hole 201 is disposed at the upper end of the bottom chassis 9, the lower end of the bottom chassis 9 is fixedly connected with a screw block 203, the lower end of the screw block 203 is connected with a push rod 204 in a threaded manner, a spring 205 is disposed inside the position hole 201, a plug 202 is disposed inside the position hole 201, the upper end of the plug 202 is fixedly connected with the spring 205, the lower end of the plug 202 is movably connected with the push rod 204, the upper end of the plug 202 is connected with the lower end of the connection block 7 in an inserting manner, after the supporting rod 4 rotates to the upper end of the bottom chassis 9 through the connection block 7, the plug 204 and the screw block 203 are fixed so that the plug 202 is inserted into the connection block 7 upwards in the position hole 201, and at the same time the plug 202 pulls the spring 205, so that the connection block 7 can be fixed at the upper end of the bottom chassis 9, when the folding device is folded, the connecting block 7 on the support rod 4 can be rotated to be folded longitudinally only by screwing the push rod 204 off the screw block 203 and enabling the bolt 202 to be separated from the connecting block 7 under the reset effect of the spring 205; the lower extreme fixedly connected with card hole 8 of connecting block 7, the upper end of bolt 202 and the lower extreme plug-in connection in card hole 8 set up card hole 8 on connecting block 7, can make things convenient for bolt 202 to insert connecting block 7 internal fixation perpendicularly.

Example 3

Referring to fig. 4-5, in order to achieve the purpose of conveniently placing the supporting rod 13 on the supporting block 6, the rod shape of the supporting rod 13 in this embodiment is adapted to the placing opening of the supporting block 6, and the rod shape of the supporting rod 13 is adapted to the placing opening of the supporting block 6, so that the supporting rod 13 can be stably placed on the supporting block 6 after being unfolded.

The use principle and the advantages are as follows: in the using process, firstly, a tether at the opposite side of the underframe 9 is untied, then the support rod 4 rotates to the upper end of the underframe 9 through the connecting block 7, the push rod 204 and the screw block 203 are rotated to be fixed, so that the bolt 202 is upwards inserted into the connecting block 7 in the position hole 201, meanwhile, the bolt 202 pulls the spring 205, so that the connecting block 7 is fixed at the upper end of the underframe 9, then the support rod 2 is pulled from the middle to the two sides, so that the first frame rod 11 and the second frame rod 12 are expanded at the opposite side of the support rod 4, meanwhile, the support rod 13 at the upper end of the first frame rod 11 and the upper end of the second frame rod 12 enters the support block 6 of the support rod 4 under the pulling action, meanwhile, the seat cushion 5 between the support rods 13 is unfolded in a straight shape, when being folded, the seat cushion 5 is directly lifted, the lower end of the first frame rod 11 and the second frame rod 12 rotates, the support rod 13 at the upper end is separated from the support block 6, at the moment, and is in a transverse shape, then, the push rod 204 is upwards rotated from the screw block 203, make bolt 202 under spring 205 effect that resets, deviate from connecting block 7, can rotate connecting block 7 on the branch 4 and carry out vertical folding to can further carry out rotatory folding to the shallow, reduce occupation space, make and carry more convenient.

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

Claims

1. A four-wheel cart capable of being rotatably folded is characterized in that: the folding type folding bicycle comprises a chassis (9), wherein a threaded sleeve (1) is arranged outside the upper end of the chassis (9), a support rod (4) is rotatably connected to the outside of the upper end of the chassis (9) through the threaded sleeve (1), a first support rod (11) and a second support rod (12) are rotatably connected to opposite sides of the support rod (4) respectively, the opposite sides of the middle parts of the first support rod (11) and the second support rod (12) are rotatably connected, support rods (13) are fixedly connected to the upper ends of the first support rod (11) and the second support rod (12), support blocks (6) are fixedly connected to the outer walls of the opposite sides of the support rod (4), the support rods (13) and the support blocks (6) are movably connected, a seat cushion (5) is fixedly connected to the opposite sides of the support rods (13), a connecting block (7) is fixedly installed at the lower end of the support rod (4) through screws, and a clamping piece (2) is arranged at the lower end of the chassis (9), the lower end of the bottom frame (9) is movably connected with the connecting block (7) through the clamping piece (2).

2. A rotatably collapsible four-wheeled stroller according to claim 1, wherein: the clamping piece (2) comprises a position hole (201), the upper end of the bottom frame (9) is arranged in the position hole (201), a screw block (203) is fixedly connected to the lower end of the bottom frame (9), a push rod (204) is connected to the lower end of the screw block (203) in a threaded mode, a spring (205) is arranged inside the position hole (201), a bolt (202) is arranged inside the position hole (201), the outer portion of the upper end of the bolt (202) is fixedly connected with the spring (205), the lower end of the bolt (202) is movably connected with the push rod (204), and the upper end of the bolt (202) is connected with the lower end of the connecting block (7) in an inserting mode.

3. A rotatably collapsible four-wheeled stroller according to claim 2, wherein: the lower extreme fixedly connected with card hole (8) of connecting block (7), the upper end of bolt (202) and the lower extreme plug-in connection in card hole (8).

4. A rotatably collapsible four-wheeled stroller according to claim 1, wherein: the upper end handrail portion of branch (4) is equipped with rubber sleeve (10), the outside of rubber sleeve (10) is equipped with through-hole (3).

5. A rotatably collapsible four-wheeled stroller according to claim 1, wherein: the rod shape of the supporting rod (13) is matched with the placing opening of the supporting block (6).

6. A rotatably collapsible four-wheeled stroller according to claim 1, wherein: and a positioning plate (14) is arranged outside the connecting block (7).