CN220996448U - Folding cart capable of being pushed backwards - Google Patents
Folding cart capable of being pushed backwards Download PDFInfo
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- CN220996448U CN220996448U CN202322915369.2U CN202322915369U CN220996448U CN 220996448 U CN220996448 U CN 220996448U CN 202322915369 U CN202322915369 U CN 202322915369U CN 220996448 U CN220996448 U CN 220996448U
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a folding cart capable of being pushed backwards, which comprises a cart body, wherein the cart body comprises a front wheel frame and a rear wheel frame; the extension frame is rotatably connected to the rear wheel frame, has a switchable folding state and an unfolding state and is provided with a hand pushing part for pushing back; the locking mechanism is used for switching the unfolding state and the folding state of the extension frame.
Description
Technical Field
The utility model relates to a trolley, in particular to a folding trolley capable of being pushed backwards.
Background
The trolley on the market can be pulled forward generally, the application of the trolley is greatly expanded, children, pets and the like can be born, and the safety requirements of the children and the pets cannot be met by the trolley which is pulled forward currently. The existing push-back cart achieves the purpose that the push handle is foldable through two rotatable connecting rods, and the foldable push handle is fixed through a complex fixing device. The structure is complex, and the number of assembly parts is large.
Disclosure of utility model
The utility model provides a pushback pushable, comprising:
The trolley comprises a trolley body, wherein the trolley body comprises a front wheel frame and a rear wheel frame;
The extension frame is rotatably connected to the rear wheel frame, has a switchable folding state and an unfolding state and is provided with a hand pushing part for pushing back;
The locking mechanism is used for switching the unfolding state and the folding state of the extension frame.
In some embodiments, the extension frame has a front frame body and a rear push rod connected to the rear side of the front frame body, and the left side and the right side of the front frame body are rotatably connected to the rear wheel frame.
In some embodiments, the rear wheel frame has a left mounting bar and a right mounting bar extending axially upward, and the left side and the right side of the front frame body are rotatably connected to the left mounting bar and the right mounting bar, respectively.
In some embodiments, the extension frame defines a receiving space in which the storage bag is received.
In some embodiments, the locking mechanism comprises a left connecting rod set and a right connecting rod set, one ends of the left connecting rod set and the right connecting rod set are movably connected with the extension frame, the other ends of the left connecting rod set and the right connecting rod set are movably connected with the rear wheel frame, and the left connecting rod set and the right connecting rod set are foldable rod sets.
In some embodiments, the left and right linkages each comprise:
A first link pivotally connected to the rear side of the extension frame;
The first connecting rod and the second connecting rod are mutually unfolded to support the extension frame to be in an unfolded state, and are mutually folded to allow the extension frame to be switched from the unfolded state to the folded state;
And the locking part is used for switching the supporting state and the folding state of the first connecting rod and the second connecting rod.
In some embodiments, the locking portion includes a clamping sleeve that clamps to the connection between the first link and the second link.
In some embodiments, the rear wheel frame is further provided with a stopper for restricting forward displacement of the first link and the second link.
In some embodiments, a telescopic elastic limiting block is arranged above the first connecting rod.
In some embodiments, the locking portion is provided on the rear wheel frame, and the locking portion has a locked state in which the second link is locked on the rear wheel frame and an unlocked state in which the second link is allowed to be turned over.
In some embodiments, the locking portion is a catch member.
In some embodiments, the left link group and the right link group each include a link, a slide sleeve, and a slide locking member, the slide sleeve being slidably disposed on the rear wheel frame, the slide locking member being configured to lock or unlock the slide sleeve, one end of the link being pivotally connected to the extension frame, and the other end of the link being pivotally connected to the slide sleeve.
The push-back handle is added to the push-back cart provided by the utility model, so that the requirement of a user for looking after a vehicle-mounted pet or a child is met, and in addition, the push-back is realized, meanwhile, the storage frame is added, and the capacity of the cart is improved. Finally, the push handle provided by the embodiment can be folded, so that the folding volume of the push cart can not be increased significantly.
The trolley provided by the utility model has the advantages of reduced parts, low cost, simple structure and simple and convenient operation.
Drawings
Fig. 1 to fig. 4 are schematic structural views of a cart according to embodiment 1 of the present utility model;
fig. 5 to 6 are schematic structural views of a cart according to embodiment 2 of the present utility model;
Fig. 7 to 8 are schematic structural diagrams of a cart according to embodiment 3 of the present utility model.
Detailed Description
The utility model or the technical scheme of the utility model is further specifically described below through specific embodiments and with reference to the accompanying drawings;
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The term "plurality" refers to two or more.
In the description of the present utility model, it should be noted that, unless otherwise specified and defined, the terms "mounted" and "connected" are to be construed broadly, and may be, for example, mechanical or electrical, or may be internal to two elements in communication, or may be directly or indirectly connected through an intermediate medium, and the specific meaning of the terms may be understood by those skilled in the art according to circumstances.
Example 1
Referring to fig. 1-4, the present embodiment provides a pushable folding cart, the pushable folding cart comprises a cart body 1, an extension frame 2 and a locking mechanism 3, the cart body comprises a front wheel frame 11 and a rear wheel frame 12, the front wheel is mounted at the bottom of the front wheel frame 11, the rear wheel is mounted at the bottom of the rear wheel frame, and the front wheel frame 11, the rear wheel frame 12 and the bottom frame form the pushable cart through foldable side frames 13 at two sides; in this embodiment, the front wheel frame 11 is provided with a front handle 10 to pull the cart to walk by the handle 10.
The extension frame 2 is rotatably connected to the rear wheel frame 12, the extension frame 2 has a switchable folded state (refer to fig. 4) and an unfolded state (refer to fig. 1), and the locking mechanism is used for switching the unfolded state and the folded state of the extension frame. The extension rack is provided with a hand pushing part 21 for pushing back operation, so that firstly, the embodiment provides a pushing back cart for realizing the requirement of a user for looking after a vehicle-mounted pet or a child; secondly, the extension frame 2 can define a containing space 200 in which the storage bag is contained, so that the storage frame can be increased by using the containing space while the backward pushing is realized, and the capacity of the cart is improved. Finally, when the foldable cart is folded, the newly added extension frame is also a foldable member, so referring to fig. 3, the folding volume of the folded foldable cart is not increased significantly.
In some embodiments, the extension frame has a front frame body 20 and a rear push rod 21 connected to the rear side of the front frame body, the rear wheel frame 12 has a left mounting rod 121 and a right mounting rod 122 extending axially upwards, and the left side and the right side of the front frame body 20 are rotatably connected to the left mounting rod and the right mounting rod, respectively, so that the extension frame can have an unfolded state and a folded state.
The locking mechanism 3 is used for switching the unfolding state and the folding state of the extension frame 2, namely, the extension frame can be locked to be in the unfolding state stably, and at the moment, a user pushes the cart to walk by holding the rear push rod 21 at the rear side. The extension frame can be unlocked after the cart is used so as to be folded and rotated compared with the rear wheel frame 12, so that the storage volume of the cart is reduced. The locking mechanism has a plurality of structural forms, in some embodiments, the locking mechanism 3 comprises a left connecting rod group and a right connecting rod group, one ends of the left connecting rod group and the right connecting rod group are movably connected with the extension frame, the other ends of the left connecting rod group and the right connecting rod group are movably connected with the rear wheel frame, and the left connecting rod group and the right connecting rod group are foldable rod groups, so that the switching between the unfolding state and the folding state of the extension frame is realized through the left connecting rod and the right connecting rod group. Since the left and right link groups have the same structure, only one of them will be used as an example for the detailed description below. The left connecting rod group and the right connecting rod group comprise a first connecting rod 31, a second connecting rod 32 and a locking part; the first link 31 is pivotally connected to the rear side of the extension frame 2; the second link 32 has one end pivotally connected to the first link 31 and the other end pivotally connected to the rear wheel frame 12, the first link 31 and the second link 32 are unfolded with each other to support the extension frame in an unfolded state, at this time, the first link 31 and the second link 32 are folded with each other to allow the extension frame to be switched from the unfolded state to the folded state, at this time, the first link and the second link are in the folded state, and the locking portion is used for switching the support state and the folded state of the first link 31 and the second link 32, i.e., the locking portion is used for preventing the pivoting folding of the first link 31 and the second link 32.
In this embodiment, the locking portion includes a clamping sleeve 33, the clamping sleeve 33 is clamped at the connection position of the first connecting rod and the second connecting rod, so, when the clamping sleeve 33 is clamped at the connection position of the first connecting rod and the second connecting rod, the first connecting rod and the second connecting rod are subject to the acting force of the clamping sleeve 33, and the first connecting rod and the second connecting rod cannot be rotated and folded. When the extension frame is required to be unlocked, the clamping sleeve slides upwards or downwards to unlock the joint of the first connecting rod and the second connecting rod, the first connecting rod and the second connecting rod are allowed to rotate, and finally the extension frame is stored and folded. In addition, the rear wheel frame 12 is also provided with a stopper 7 for restricting forward displacement of the first link and the second link.
Optionally, the first connecting rod top set up telescopic elasticity stopper 34, after pulling the chucking cover and upwards slide to elasticity stopper top, remove the effort to the chucking cover, elasticity stopper 34 restriction chucking cover slide downwards, prevent to drop and influence the drawing in.
Example 2
Referring to fig. 5-6, embodiment 1 is substantially the same as embodiment 2, and the main difference is that the arrangement position and the structure form of the locking portion are different;
the present embodiment provides a locking portion provided on the rear wheel frame 12, the same first link 31 and second link 32 being rotatably connected, the first link 31 being rotatably connected with the extension frame 2, the locking portion having a locked state in which the second link 32 is locked on the rear wheel frame 12 and an unlocked state in which the second link 32 is allowed to be turned over. Specifically, the locking portion is a locking piece 34, and after the locking piece 34 is unlocked, the second connecting rod 32 is used as a turning piece to trigger the turning and folding of the first connecting rod 31. Illustratively, the latch has a clamping cavity in which the first link 32 is clamped.
The application method of the cart provided by the embodiment comprises the following steps: when the cart needs to be pushed from the rear side, the locking piece 34 locks the second connecting rod on the rear wheel frame, at this time, the second connecting rod is in a vertical state parallel to the rear wheel frame, the extension frame can be used for placing the storage frame, and the rear side pushing rod of the extension frame is used for pushing and pulling. After the cart is used, the unlocking fastener is opened, the hand-pulled extension frame is turned downwards, the second connecting rod 32 and the first connecting rod 31 are driven to turn over and fold, and finally the cart is folded.
Example 3
Referring to fig. 7-8, the structure of the present embodiment is basically the same as that of embodiment 1, and the main difference is that the left and right link sets each include a link 35, a sliding sleeve 36 and a sliding locking member 37, the sliding sleeve 36 is slidably disposed on the rear wheel frame 12, the sliding locking member 37 is used for locking or unlocking the sliding sleeve 36, one end of the link 35 is pivotally connected to the extension frame, and the other end is pivotally connected to the sliding sleeve.
The sliding locking member includes an elastic button and a limiting portion, where the elastic button drives the limiting portion to limit or allow the sliding sleeve to slide.
The application method of the cart provided by the embodiment comprises the following steps: when the cart needs to be pushed from the rear side, the sliding locking piece 37 locks the sliding sleeve 36, the connecting rod 35 is supported between the extending frame and the sliding sleeve, at this time, the extending frame can be used for placing the storage frame, and the push rod at the rear side of the extending frame is used for pushing and pulling. When the cart is used, the sliding locking piece 37 is opened, the hand-pulled extension frame is turned downwards, the sliding sleeve slides downwards along the rear wheel frame 12, and finally the cart is folded.
The push-back handle is added to the push-back cart provided by the utility model, so that the requirement of a user for looking after a vehicle-mounted pet or a child is met, and in addition, the push-back is realized, meanwhile, the storage frame is added, and the capacity of the cart is improved.
The trolley provided by the utility model has the advantages of reduced parts, low cost, simple structure and simple and convenient operation.
In the description of the present specification, a description referring to the terms "one embodiment," "some embodiments," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. A pushable-back folding cart, comprising:
The trolley comprises a trolley body, wherein the trolley body comprises a front wheel frame and a rear wheel frame;
The extension frame is rotatably connected to the rear wheel frame, has a switchable folding state and an unfolding state and is provided with a hand pushing part for pushing back;
The locking mechanism is used for switching the unfolding state and the folding state of the extension frame.
2. The folding cart of claim 1 wherein said extension frame has a front frame body and a rear push rod attached to a rear side of said front frame body, said front frame body being rotatably attached to said rear wheel frame on left and right sides.
3. The folding cart of claim 2 wherein said rear wheel frame has left and right mounting bars extending axially upwardly, said front frame body having left and right sides rotatably connected to said left and right mounting bars, respectively.
4. The folding cart of claim 1 wherein said extension frame defines a receiving space for receiving a storage bag therein.
5. The folding cart of claim 1 wherein said locking mechanism comprises a left linkage and a right linkage, one end of said left and right linkages being movably connected to said extension frame and the other end being movably connected to said rear wheel frame, said left and right linkages being foldable linkages.
6. The folding cart of claim 5 wherein said left and right linkages each comprise:
A first link pivotally connected to the rear side of the extension frame;
The first connecting rod and the second connecting rod are mutually unfolded to support the extension frame to be in an unfolded state, and are mutually folded to allow the extension frame to be switched from the unfolded state to the folded state;
And the locking part is used for switching the supporting state and the folding state of the first connecting rod and the second connecting rod.
7. The folding cart of claim 6 wherein said locking portion comprises a gripping sleeve, said gripping sleeve gripping at the junction of said first link and said second link.
8. The folding cart of claim 7 wherein said rear wheel frame is further provided with a stopper for limiting forward displacement of said first link and said second link.
9. The folding cart of claim 7 wherein a retractable elastic stopper is disposed above said first link.
10. The folding cart of claim 6 wherein said locking portion is provided on the rear wheel frame, said locking portion having a locked state locking the second link to the rear wheel frame and an unlocked state allowing the second link to be flipped.
11. The folding cart of claim 10 wherein said locking portion is a catch member.
12. The folding cart of claim 5 wherein said left and right linkages each comprise a link, a slide sleeve and a slide locking member, said slide sleeve being slidably disposed on the rear wheel frame, said slide locking member being adapted to lock or unlock the slide sleeve, said link having one end pivotally connected to the extension frame and the other end pivotally connected to the slide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322915369.2U CN220996448U (en) | 2023-10-30 | 2023-10-30 | Folding cart capable of being pushed backwards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322915369.2U CN220996448U (en) | 2023-10-30 | 2023-10-30 | Folding cart capable of being pushed backwards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220996448U true CN220996448U (en) | 2024-05-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322915369.2U Active CN220996448U (en) | 2023-10-30 | 2023-10-30 | Folding cart capable of being pushed backwards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220996448U (en) |
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2023
- 2023-10-30 CN CN202322915369.2U patent/CN220996448U/en active Active
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