CN106697031B - Folding cart - Google Patents
Folding cart Download PDFInfo
- Publication number
- CN106697031B CN106697031B CN201710001221.4A CN201710001221A CN106697031B CN 106697031 B CN106697031 B CN 106697031B CN 201710001221 A CN201710001221 A CN 201710001221A CN 106697031 B CN106697031 B CN 106697031B
- Authority
- CN
- China
- Prior art keywords
- wheel support
- push rod
- rear wheel
- front wheel
- folding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
- B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
- B62B7/083—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis the wheel axes being moved from each other during folding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
- B62B3/027—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible collapsible shopping trolleys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
- B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
- B62B7/086—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis becoming smaller in all three dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
- B62B2205/02—Hand-propelled vehicles or sledges being foldable or dismountable when not in use foldable widthwise
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
- B62B2205/30—Detachable, retractable or collapsible load supporting means
- B62B2205/32—Shelves
Abstract
The invention discloses a folding trolley, which comprises a trolley frame with an unfolding state and a folding state, wherein the trolley frame comprises a push rod, a front wheel support, a front wheel arranged at the lower part of the front wheel support, a rear wheel support and a rear wheel arranged at the lower part of the rear wheel support, and the push rod is connected with the front wheel support in a relatively sliding fit manner; the rear wheel support comprises an upper rear wheel support and a lower rear wheel support which are connected in a rotating way, and the upper rear wheel support is connected with the push rod in a rotating way; the cart frame also comprises side supporting rods, and the two end parts of the side supporting rods are respectively connected with the front wheel support and the lower rear wheel support in a rotating way. The folding cart provided by the invention is convenient to fold and unfold, small in occupied area after folding, capable of standing, and wide in application range.
Description
Technical Field
The invention relates to the technical field of carts, in particular to a folding cart.
Background
Along with the continuous improvement of the living standard of people, the cart is widely applied to daily life of common people, such as a child cart, a supermarket shopping cart and a cart for students to replace schoolbags. The existing carts are more and more diversified in style, and most carts are designed to be foldable in consideration of factors such as occupied space, convenience in carrying and the like. However, the existing foldable trolley is still large in size after being folded, cannot stand alone, is complex in structure, has certain complexity and difficulty in unfolding and folding operations, and is inconvenient to use.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects of the prior art, and to provide a folding cart with simple operation and small volume after folding.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the folding trolley comprises a trolley frame with an unfolding state and a folding state, wherein the trolley frame comprises a push rod, a front wheel bracket, a front wheel, a rear wheel bracket and a rear wheel, the front wheel and the rear wheel are arranged at the lower part of the front wheel bracket, and the push rod is connected with the front wheel bracket in a relatively sliding fit manner; the rear wheel support comprises an upper rear wheel support and a lower rear wheel support which are connected in a rotating way, and the upper rear wheel support is connected with the push rod in a rotating way; the cart frame also comprises side supporting rods, and the two end parts of the side supporting rods are respectively connected with the front wheel support and the lower rear wheel support in a rotating way.
Preferably, when the folding cart is in the unfolded state, the lower end part of the push rod is positioned at the upper part of the front wheel support, the front wheel support and the side support are relatively unfolded, and the upper rear wheel support and the lower rear wheel support are relatively unfolded; when the folding cart is in the folding state, the lower end part of the push rod extends downwards to exceed the lower part of the front wheel support, the front wheel support and the side support are oppositely gathered, and the lower rear wheel support and the upper rear wheel support are oppositely gathered.
Preferably, one of the front wheel bracket and the push rod is provided with a sliding groove extending along the length direction of the front wheel bracket and the push rod, and the other is provided with a sliding block in sliding fit with the sliding groove.
Preferably, the push rod at least comprises an upper push rod and a lower push rod which are connected in a rotating way, the lower push rod is connected with the front wheel bracket in a relatively sliding fit way, and when the folding cart is in the unfolding state, the upper push rod is opened relative to the lower push rod and extends towards the upper part of the cart frame; when the folding cart is in the folding state, the upper push rod is folded relative to the lower push rod and extends towards the lower part of the cart frame.
More preferably, the upper push rod and the lower push rod are rotatably connected through a push rod rotary joint.
Further preferably, the upper end part of the upper rear wheel bracket is rotatably connected to the push rod rotary joint through a rear wheel bracket connecting rotating shaft.
Preferably, the upper rear wheel bracket and the lower rear wheel bracket are rotatably connected through a rear wheel bracket rotary joint.
Preferably, the upper end part of the side stay is rotationally connected with the upper end part of the front wheel bracket through a front wheel bracket rotary joint; the lower part of the lower rear wheel bracket is provided with a connecting piece extending towards the front wheel bracket, and the lower end part of the side stay rod is rotationally connected with the connecting piece.
Preferably, the folding cart further comprises a seat rod, wherein the front end part of the seat rod is rotatably connected with the lower end part of the push rod, and the rear end part of the seat rod is rotatably connected to the side stay rod. When the folding trolley is in the folding state, the front end part of the seat rod and/or the lower end part of the push rod is/are supported on the ground.
More preferably, the seat rod comprises a seat rod front section and a seat rod rear section which are integrally bent, wherein the end part of the seat rod front section is rotationally connected with the lower end part of the push rod, and the end part of the seat rod rear section is rotationally connected with the side stay rod; when the folding cart is in the unfolding state, the front section of the seat rod and the push rod are relatively unfolded, when the folding cart is in the folding state, the front section of the seat rod and the push rod are relatively folded, and the folding cart can be kept self-supporting by being matched and supported together with the front wheels through the end part of the front section of the seat rod and/or the lower end of the push rod.
The folding principle of the folding cart of the invention is as follows: the push rod slides downwards along the front wheel support, the upper end part of the upper rear wheel support connected with the push rod moves forwards, meanwhile, the side support rods are folded towards the front wheel support, the lower rear wheel support connected with the side support rods through the connecting piece overturns forwards around the rear wheel support rotating joint, and the upper rear wheel support is folded towards the side support rods, so that the folding principle is simple and the operation is convenient; after folding, the lower end part of the push rod extends downwards to exceed the lower part of the front wheel support, the front wheel support is oppositely folded with the side support rod, the lower rear wheel support is oppositely folded with the upper rear wheel support, the front wheel is positioned in an included angle formed by the front wheel support and the upper rear wheel support, the rear wheel is positioned above the front wheel, and the occupied area is small.
Compared with the prior art, the invention has the following advantages: the folding cart provided by the invention is convenient to fold and unfold, small in occupied area after folding, capable of standing, and wide in application range.
Drawings
FIG. 1 is a side view of a folding cart of the present invention in an unfolded state;
FIG. 2 is a perspective view of a folding cart in an unfolded state according to the present invention;
FIG. 3 is a side view of a folding cart of the present invention during folding;
FIG. 4 is a schematic perspective view of a folding cart according to the present invention during folding;
FIG. 5 is a side view of a folding cart of the present invention in a folded condition;
fig. 6 is a perspective view of a folding cart in a folded state according to the present invention;
in the accompanying drawings:
1-upper push rod, 2-lower push rod, 3-front wheel support, 4-side support rod, 5-seat rod, 51-seat rod front section, 52-seat rod rear section, 6-upper rear wheel support, 7-lower rear wheel support, 8-push rod rotary joint, 9-front wheel support rotary joint, 10-lower push rod link rotary shaft, 11-seat rod link rotary shaft, 12-side support rod link rotary shaft, 13-rear wheel support link joint, 14-rear wheel support rotary shaft, 15-front wheel support connecting rod, 16-front wheel, 17-rear wheel, 18-connecting piece.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 2, a folding cart according to the present invention includes a cart frame having an unfolded state and a folded state, which includes a push rod, side stay 4, seat bar 5, front wheel support 3, front wheel 16 mounted at a lower portion of the front wheel support 3, rear wheel support, and rear wheel 17 mounted at a lower portion of the rear wheel support. When the folding cart is in an unfolding state, the lower end part of the push rod is positioned at the upper part of the front wheel bracket 3, the front wheel bracket 3 and the side stay 4 are relatively opened, and the upper rear wheel bracket 6 and the lower rear wheel bracket 7 are relatively opened; when the folding cart is in a folded state, the lower end part of the push rod extends downwards beyond the lower part of the front wheel bracket 3, the front wheel bracket 3 is oppositely gathered with the side stay 4, and the lower rear wheel bracket 7 is oppositely gathered with the upper rear wheel bracket 6.
One of the front wheel bracket 3 and the push rod is provided with a sliding groove extending along the length direction of the front wheel bracket, and the other is provided with a sliding block in sliding fit with the sliding groove. The push rod at least comprises an upper push rod and a lower push rod which are connected in a rotating way, the preferred push rod in the embodiment comprises an upper push rod 1 and a lower push rod 2, and the lower end part of the upper push rod 1 is connected with the upper end part of the lower push rod 2 through a push rod rotary joint 8. The lower push rod 2 is connected with the front wheel bracket 3 in a relative sliding fit manner. When the folding cart is in an unfolding state, the upper push rod 1 is unfolded relative to the lower push rod 2 and extends towards the upper part of the cart frame, as shown in figures 1 and 2; when the folding cart is in a folded state, the upper push rod 1 is folded relative to the lower push rod 2 and extends towards the lower part of the cart frame, as shown in fig. 5 and 6.
The rear wheel support comprises at least two parts, namely an upper rear wheel support and a lower rear wheel support, and the rear wheel support in the embodiment preferably comprises two parts, namely an upper rear wheel support 6 and a lower rear wheel support 7. As shown in fig. 2, in this embodiment, the upper rear wheel bracket 6 and the lower rear wheel bracket 7 are respectively in a "U" type structure, and the openings of the two "U" type structures are opposite, and the upper rear wheel bracket 6 and the lower rear wheel bracket 7 are connected by a rear wheel bracket rotary joint 13. The upper end of the upper rear wheel bracket 6 is rotatably connected to the push rod rotary joint 8 through a rear wheel bracket connecting shaft 14, and a connecting piece extending toward the front wheel bracket 3 is arranged at the lower part of the lower rear wheel bracket 7, and is preferably a connecting piece 18 in this embodiment.
The upper end of the side stay 4 is rotatably connected with the upper end of the front wheel bracket 3 through the front wheel bracket rotary joint 9, and the lower end of the side stay 4 is rotatably connected with the connecting sheet 18 through the side stay link rotary shaft 12.
The front end of the seat rod 5 is rotationally connected with the lower end of the push rod through a lower push rod link rotating shaft 10, and the rear end of the seat rod 5 is rotationally connected with the middle part of the side stay rod 4 at a lower position through a seat rod link rotating shaft 11. In this embodiment, the seat post 5 preferably includes a seat post front section 51, a seat post rear section 52, and a connecting rod connected to the seat post rear section 52, which are integrally formed by bending, and an end of the seat post front section 51 is rotatably connected to a lower end of the push rod through the lower push rod link shaft 10, and an end of the seat post rear section 52 is rotatably connected to a middle lower position of the side stay 4 through the seat post link shaft 11. When the folding cart is in an unfolding state, the seat rod front section 51 and the push rod are relatively unfolded, and when the folding cart is in a folding state, the seat rod front section 51 and the push rod are relatively folded.
The lower end of the front wheel bracket 3 is connected by a front wheel bracket connecting rod 15. The front wheels 16 are connected to the lower end portions of the front wheel brackets 3 by means of conventional arrangements in the art, and the rear wheels 17 are connected to the lower end portions of the lower rear wheel brackets 7 by means of conventional arrangements in the art. The shaft is preferably a pin.
When the folding trolley is in the unfolded state, the length extending directions of the upper push rod 1 and the lower push rod 2 are in the same straight line and are parallel to the extending line of the front wheel support 3, the lower end part of the lower push rod 2 is positioned at the upper part of the front wheel support 3, the front wheel support 3 and the side support 4 are relatively opened, the length extending directions of the upper rear wheel support 6 and the lower rear wheel support 7 are in the same straight line, the front section 51 of the seat rod and the push rod are relatively opened, and locking devices are arranged on the front wheels 16 and/or the rear wheels 17, as shown in fig. 1 and 2.
In the process of changing the folding cart from the unfolding state shown in fig. 1 and 2 to the folding state shown in fig. 5 and 6, the upper push rod 1 is forced downwards along the extending direction of the upper push rod 1 to push the lower push rod 2 to slide downwards along the front wheel support 3, the upper end part of the upper rear wheel support 6 connected with the lower push rod 2 moves forwards, meanwhile, the end part of the seat rod front end 51 connected with the lower push rod 2 moves downwards to drive the side support rod 4 to close to the front wheel support 3, the lower rear wheel support 7 connected with the side support rod 4 through the connecting sheet 18 rolls forwards around the rear wheel support rotating joint 13, the upper rear wheel support 6 rolls to close to the side support rod 4, and then the upper end part of the upper push rod 1 rolls forwards as shown in fig. 3 and 4.
When the folding cart is in a folded state after the folding cart is in the above-mentioned operation. At this time, the upper push rod 1 is folded relative to the lower push rod 2 and extends towards the lower part of the frame of the cart, the lower end part of the lower push rod 2 extends downwards beyond the lower part of the front wheel bracket 3, the front wheel bracket 3 is folded relative to the side stay 4, the lower rear wheel bracket 7 is folded relative to the upper rear wheel bracket 6, and the seat rod front section 51 is folded relative to the push rod, as shown in fig. 5 and 6. At this time, the folded-state cart can be kept free-standing by the co-support of the end of the seat post front section 51 and the front wheel 16. In other embodiments, the lower end of the push rod 2 may be co-supported with the front wheel 16 when the stroller is in the collapsed position, so that the stroller remains free-standing.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a folding shallow, includes the shallow frame that has expansion state and folding state, the shallow frame includes push rod, front wheel support, installs front wheel, the rear wheel support of front wheel support lower part and installs the rear wheel of rear wheel support lower part, its characterized in that: the push rod is connected with the front wheel support in a relative sliding fit manner, so that the push rod can slide relatively along the length direction of the front wheel support, and the front wheel support can slide relatively along the length direction of the push rod; the rear wheel support comprises an upper rear wheel support and a lower rear wheel support which are connected in a rotating way, the upper end part of the upper rear wheel support is connected with the push rod in a rotating way, and the lower end part of the upper rear wheel support is connected with the upper part of the lower rear wheel support in a rotating way through a rear wheel support rotary joint; the cart frame also comprises a side stay bar and a seat bar, one end part of the side stay bar is rotationally connected to the front wheel bracket, the other end part of the side stay bar is rotationally connected with the lower rear wheel bracket, the front end part of the seat bar is rotationally connected with the lower end part of the push rod, the rear end part of the seat bar is rotationally connected to the side stay bar,
the push rod at least comprises a lower push rod, the lower push rod is connected with the front wheel support in a relatively sliding fit manner, the lower push rod is always parallel to the front wheel support, when the trolley frame is folded, the lower push rod slides downwards along the front wheel support to be folded, and the upper rear wheel support and the lower rear wheel support are relatively overturned to enable the lower rear wheel support to be overturned upwards and downwards; when the cart frame is in a folded state, the lower rear wheel support is folded at the front side of the upper rear wheel support, and the rear wheels are positioned above the rear wheel support rotary joints.
2. The folding cart of claim 1, wherein: when the folding cart is in the unfolding state, the lower end part of the push rod is positioned at the upper part of the front wheel support, the front wheel support and the side support are relatively opened, and the upper rear wheel support and the lower rear wheel support are relatively opened; when the folding cart is in the folding state, the lower end part of the push rod extends downwards to exceed the lower part of the front wheel support, the front wheel support and the side support are oppositely gathered, and the lower rear wheel support and the upper rear wheel support are oppositely gathered.
3. The folding cart of claim 1, wherein: one of the front wheel support and the push rod is provided with a sliding groove extending along the length direction of the front wheel support and the push rod, and the other is provided with a sliding block in sliding fit with the sliding groove.
4. The folding cart of claim 1, wherein: the push rod further comprises an upper push rod which is rotationally connected with the lower push rod, and when the folding cart is in the unfolding state, the upper push rod is unfolded relative to the lower push rod and extends towards the upper part of the cart frame; when the folding cart is in the folding state, the upper push rod is folded relative to the lower push rod and extends towards the lower part of the cart frame.
5. The folding cart of claim 4, wherein: the upper push rod is rotationally connected with the lower push rod through a push rod rotary joint.
6. The folding cart of claim 5, wherein: the upper end part of the upper rear wheel bracket is rotationally connected to the push rod rotary joint through a rear wheel bracket connecting rotating shaft.
7. The folding cart of claim 1, wherein: the upper end part of the side stay bar is rotationally connected with the upper end part of the front wheel bracket through a front wheel bracket rotary joint; the lower part of the lower rear wheel bracket is provided with a connecting piece extending towards the front wheel bracket, and the lower end part of the side stay rod is rotationally connected with the connecting piece.
8. The folding cart of claim 1, wherein: the seat rod comprises a seat rod front section and a seat rod rear section which are integrally bent, the end part of the seat rod front section is rotationally connected with the lower end part of the push rod, and the end part of the seat rod rear section is rotationally connected with the side stay rod; when the folding cart is in the unfolding state, the front section of the seat rod and the push rod are opened relatively, and when the folding cart is in the folding state, the front section of the seat rod and the push rod are closed relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001221.4A CN106697031B (en) | 2017-01-03 | 2017-01-03 | Folding cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001221.4A CN106697031B (en) | 2017-01-03 | 2017-01-03 | Folding cart |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106697031A CN106697031A (en) | 2017-05-24 |
| CN106697031B true CN106697031B (en) | 2023-05-23 |
Family
ID=58905792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710001221.4A Active CN106697031B (en) | 2017-01-03 | 2017-01-03 | Folding cart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106697031B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107264600A (en) * | 2017-06-01 | 2017-10-20 | 好孩子儿童用品有限公司 | A kind of children trolley |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106697031A (en) | 2017-05-24 |
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