CN215398869U - Large-capacity trolley - Google Patents

Abstract

The utility model discloses a high-capacity trolley which comprises a trolley frame and wheels arranged at the bottom of the trolley frame, wherein the trolley frame is provided with opposite transverse and longitudinal directions and comprises two side frames which are oppositely arranged along the transverse direction and a transverse connecting piece connected between the two side frames; the side frames adopt foldable four-bar linkage mechanisms, the transverse connecting piece comprises two side baffles and a plurality of transverse support rods distributed at the bottoms of the side frames, and two end parts of each side baffle are respectively hinged with the corresponding side frame; in the unfolded state, the plurality of cross support rods are arranged at the bottom, and the two side frames and the two side baffles are arranged at the periphery, so that the frame is integrally enclosed into a cage-shaped structure with an open top; in a folding state, all rod pieces in the four-bar mechanism are gathered together, and the two side baffles are close to each other. Under the condition that the external shape and size are not changed, side baffles are movably arranged at the two longitudinal ends of the frame to form a cage-shaped structure with large capacity with the frame, so that the capacity of storing or bearing children is improved.

Description

Large-capacity trolley

Technical Field

The application relates to the technical field of child carriers, in particular to a foldable large-capacity trolley.

Background

The stroller is a carrier for carrying children and accessories indoors or outdoors, and nowadays, in actual life, when the stroller is used outdoors, a large number of toys or children's objects need to be carried. In order to meet the requirement of the existing large-capacity child stroller, corresponding storage parts are often additionally arranged below the seat to store articles.

For example, the conventional chinese patent publication No. CN 210653279U discloses a hidden storage structure at the bottom layer of a stroller, which is installed under a seat of the stroller and is connected and fixed with a front leg bar and a rear leg bar, so that the storage structure needs to be detached first when the stroller is folded although the flexible cloth bag is convenient to store and fold.

Or, for example, chinese patent publication No. CN 1322651 discloses a stroller in which a basket for loading articles is also provided under a seat, but the capacity cannot meet the demand of the conventional outdoor use.

SUMMERY OF THE UTILITY MODEL

The application provides a large capacity handcart that can fold to solve the problem that current handcart bearing capacity is not enough.

A large capacity handcart comprises a frame and wheels arranged at the bottom of the frame, wherein the frame has opposite transverse and longitudinal directions and comprises two side frames which are oppositely arranged along the transverse direction and a transverse connecting piece connected between the two side frames;

the side frames adopt foldable four-bar linkage mechanisms, the transverse connecting piece comprises two side baffles and a plurality of transverse support rods distributed at the bottoms of the side frames, and two end parts of each side baffle are respectively hinged with the corresponding side frame;

in the unfolded state, the plurality of cross support rods are arranged at the bottom, and the two side frames and the two side baffles are arranged at the periphery, so that the frame is integrally enclosed into a cage-shaped structure with an open top;

in a folding state, all rod pieces in the four-bar mechanism are gathered together, and the two side baffles are close to each other.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the side barriers are U-shaped frames located at opposite inner sides of the two side frames, and the side barriers overlap the side frames in a folded state at a transverse viewing angle.

Optionally, an inner pocket with an open top for holding children or articles is arranged in the cage structure.

Optionally, the inner bag is hung or sleeved on the side baffle and the bottom support is arranged on the transverse support rod.

Optionally, at least one of the side stoppers is provided with a storage basket with an open top, and the storage basket comprises a support frame hinged to the side stopper and a deformable basket body.

Optionally, the basket body and the inner bag are integrated, and when the basket is used, the basket is embedded or hung on the support frame.

Optionally, the side stop and the side frame are hinged to each other, and a locking device for limiting relative rotation of the side stop and the side frame is disposed at the hinge, and the locking device includes:

the locking block is fixedly arranged on the side frame and is provided with at least two locking grooves;

a locking pin which is slidably mounted in the side block and can extend into one of the locking grooves to limit the side block to rotate relative to the side frame;

the first elastic piece is installed in the side block and used for driving the locking pin to extend into the locking groove.

Optionally, an unlocking device used for unlocking the locking device is arranged on the side block, the unlocking device comprises an unlocking piece which is slidably mounted on the side block, a pull wire of which two ends are respectively connected with the unlocking piece and the locking pin, and a second elastic piece which drives the unlocking piece to reset, and the locking pin passes through the pull wire and slides along with the unlocking piece to exit from the locking groove.

Optionally, the side frame comprises a front diagonal brace rod, a rear diagonal brace rod, a front longitudinal brace rod and a rear longitudinal brace rod, the tops of the front diagonal brace rod and the rear diagonal brace rod are hinged to the first rotary joint, one ends of the front longitudinal brace rod and the rear longitudinal brace rod are hinged to the second rotary joint, the other end of the front longitudinal brace rod is hinged to the bottom of the front diagonal brace rod, and the other end of the rear longitudinal brace rod is hinged to the bottom of the rear diagonal brace rod; in the unfolded state, the front longitudinal support rod and the rear longitudinal support rod are horizontally arranged.

Optionally, the wheels include a front wheel and a rear wheel, the front wheel and the rear wheel are laterally staggered, and the front wheel and the rear wheel are partially or completely overlapped when folded.

The large capacity handcart of this application compares in traditional handcart, rotates through the side fender and connects at the fore-and-aft both ends of frame, forms the cage structure that has the large capacity under the expansion state, can be used to bear many children or load a large amount of article, under original frame volume, has improved accomodating or bearing capacity of shallow.

Drawings

FIG. 1 is a perspective view of a high capacity cart according to an embodiment of the present application;

FIG. 2 is a transverse perspective expanded view of a high capacity cart according to an embodiment of the present application;

FIG. 3 is a view of the foldable large capacity stroller basket according to an embodiment of the present invention;

FIG. 4 is a side view of the large capacity stroller of an embodiment of the present application;

FIG. 5 is a view of the foldable handle bar of the large capacity hand truck according to one embodiment of the present application;

FIG. 6 is a collapsed view of the four bar linkage mechanism of the large capacity hand truck of one embodiment of the present application;

FIG. 7 is a view of the large capacity stroller of one embodiment of the present application in a collapsed state;

FIG. 8 is an exploded view of a locking device in the high capacity cart of an embodiment of the present application;

FIG. 9 is a positional view of the locking device in a side rail deployed condition in a high capacity cart according to one embodiment of the present application;

FIG. 10 is another state view of FIG. 9;

fig. 11 is a cross-sectional view of a locking device in a high capacity cart according to an embodiment of the present application.

The reference numerals in the figures are illustrated as follows:

1. a side frame; 2. an inner pocket; 3. a transverse connector; 5. an expansion device; 6. a handle bar;

11. a load-bearing zone; 12. a sinking zone; 13. a front diagonal brace rod; 14. a rear diagonal brace rod; 15. a front longitudinal support rod;

16. a rear longitudinal supporting rod; 17. a first revolute joint; 18. a second revolute joint; 31. side blocking; 32. a transverse supporting rod;

33. a storage basket; 41. a front wheel; 42. a rear wheel; 61. a lower handle bar; 62. an upper handle bar;

171. an adapter base; 311. a locking block; 312. a locking groove; 313. a locking pin; 314. a first elastic member;

316 pulling wire; 331. a support frame; 332. a basket body.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In this application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any particular order or number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The application provides a large capacity handcart, including folding frame and install in the wheel of bottom, whole car has the expansion state that bears children's removal and folds into platelike state of folding up, and the wheel includes front wheel and rear wheel, supplies the handcart to remove, and wherein the front wheel generally is the universal wheel for turn to the operation, and the rear wheel is directional wheel. The frame has opposite lateral and longitudinal directions, and the longitudinal and lateral directions mentioned in the following embodiments define, when not specifically described, the direction in which the line connecting the front and rear wheels is located, and the lateral direction is perpendicular to the longitudinal direction.

Referring to fig. 1 to 7, in one embodiment, the frame includes two side frames 1 disposed opposite to each other and a cross connecting member 3 connecting the two side frames 1, the two side frames 1 and the cross connecting member 3 together form a cage structure with an open top, and a carrying area 11 for carrying a child or carrying an object is formed inside the cage structure. Wherein the cross connections 3 typically comprise reinforcing bars as cage structures and other bar members enclosing the side frame 1 in a cage structure.

The side frame 1 adopts a foldable four-bar linkage mechanism, four bar members are sequentially hinged with each other in an unfolding state, two of the bar members are horizontally arranged and positioned at the edge of the bottom of the frame, and are connected with part of the bar members in the transverse connecting members 3 to be used as a bottom frame for supporting the cage-shaped structure, and the other two bar members extend upwards in an inclined way and are hinged with each other and are connected with part of the bar members in the transverse connecting members 3 to be used as a circle of frame around the cage-shaped structure. Whole cage structure is the cuboid shape, and the top is opened, can place two at least toddlers to bearing area 11, and four member are the triangle-shaped structure, have improved the holistic intensity of frame. Under the folding state, the two horizontally arranged rod pieces rotate relatively and are mutually closed, the rod pieces which are obliquely arranged are driven to rotate and close, and the four-bar mechanism finally completes folding and is convenient to store.

The transverse connecting piece 3 comprises side baffles 31 hinged at two longitudinal sides of the frame and a plurality of transverse supporting rods 32 arranged at the bottoms of the side frames, in an unfolded state, the side baffles 31 and the side frames 1 form a frame of a circle around a cage-shaped structure, and the transverse supporting rods 32 and the side frames 1 form a supporting frame of the cage-shaped structure. In the folding state, the two side stoppers 31 gradually approach each other when being folded along with the four-bar linkage mechanism until being in a mutually adjacent state and overlapping with the side frames at a transverse view angle in the final folding state.

The utility model provides a large capacity handcart than current handcart can be under the unchangeable condition of outward appearance volume, has the side to keep off at the fore-and-aft both ends movable mounting of frame, makes the frame form the cage structure of large capacity, improves the storing or bears child's ability. And can be folded, so that the volume of the folded frame is basically kept unchanged.

In order to reduce the volume of the folded vehicle as much as possible, please refer to fig. 1 to 4 again, in one embodiment, the side stop 31 is a U-shaped frame formed by bending a pipe or assembling a plurality of pipes, and the two open ends are hinged to the side frames 1. And the side block 31 is positioned at the opposite inner side of the side frame 1, and under the folding state of a transverse visual angle, the side block 31 is overlapped with the side frame 1, so that the space is effectively utilized, and the volume of the folded frame is reduced.

Referring to fig. 2 to 7, in one embodiment, an inner bag 2 for loading children or articles is disposed in the cage structure, and the inner bag 2 is hung or sleeved on the side stop 31 to protect the children or articles in the cage structure from falling off the stroller and make the children more comfortable in the cage structure. Interior pocket 2 can deform, folds up in step along with the carriage, compares in the tradition large capacity handcart that the seat need be dismantled, is convenient for fold and accomodates. In one of the embodiments, the inner bag 2 is hung or sleeved on the side baffle 31 and the bottom support is arranged on the transverse support rod 32, so that the supporting strength of the inner bag 2 is ensured, children can move in the inner part conveniently, and the structural strength of the large-capacity loaded articles is ensured.

Referring to fig. 1 to 7 again, in one embodiment, at least one side block 31 is provided with a basket 33 for loading articles, and preferably, the basket 33 and the side block 31 are movably installed to facilitate reducing the folding volume. The basket 33 comprises a rigid support frame 331 hinged to the side stop 31 and a deformable basket body 332. The supporting frames 331 are located at the opposite inner sides of the side blocks 31, and are overlapped with each other in the folding state at the transverse viewing angle, so that the corresponding basket bodies 332 can be deformed and folded synchronously, and the volume of the folded whole vehicle is kept unchanged while the carrying capacity of the articles is improved.

In order to fold, unfold and fix the side stop 31, please refer to fig. 8 to 11, in one embodiment, the side stop 31 and the side frame 1 are hinged and matched, and a locking device for limiting the relative rotation of the side stop and the side frame is disposed at the hinged position, and the locking device specifically includes a locking block 311, a locking pin 313 and a first elastic member 314, wherein the locking block 311 is shaped like an opposite block, and is inserted into the hinged position so that the outer periphery is a complete circular surface, the side stop 31 is matched with the circular surface to realize the rotation, and at least two locking grooves 312 are disposed on the locking block 311. The locking pin 313 is slidably mounted in the side block 31 and can extend into one of the locking grooves 312 to limit the side block 31 from rotating relative to the side frame 1, when the locking pin 313 exits the locking groove 312, the side block 31 can rotate relative to the side frame 1 to urge the side block 31 to have a use state and a folded state, and the two locking grooves 312 respectively correspond to one of the states. The first elastic member 314 is typically a spring, and is installed in the side rail 31 for urging the locking pin 313 into the locking groove 312.

Referring to fig. 8 to 11 again, in one embodiment, the side stopper 31 is provided with an unlocking device for unlocking the locking device, the unlocking device includes an unlocking member (not shown) slidably mounted on the side stopper 31, a pull wire 316 connected to the unlocking member and the locking pin 313 at two ends thereof, and a second elastic member (not shown) for urging the unlocking member to return, and the locking pin 313 slides with the unlocking member through the pull wire 316 to exit from the locking groove 312. The specific lock releasing operation is as follows: taking the example of switching to the folded state from the use state, pressing the unlocking piece, withdrawing the locking groove 312 through the pulling wire 316 pulling locking pin 313, rotating the side stop 31 immediately, releasing the pressing of the unlocking piece while rotating, the locking pin 313 abuts against the outer peripheral surface of the locking block 311 under the action of the first elastic piece 314, and when rotating to align with the other locking groove 312, automatically extending into the folded state. Wherein, the unlocking piece is positioned at the closed end of the side stop 31, which is convenient for pressing operation.

In one embodiment, the bottom of the frame is an avoiding space in the longitudinal middle region, the inner bag 2 is provided with a sinking area 12 corresponding to the avoiding space, the sinking area 12 is used for placing two feet of children, comfort of multiple children during bearing is guaranteed, and if the bottom smoothness of the bearing area 11 is kept, the structure of the inner bag 2 can be adjusted, for example, a whole pad (not shown) is additionally arranged, so that the children can move conveniently.

In one embodiment, the side frame 1 includes a front diagonal brace 13, a rear diagonal brace 14, a front longitudinal brace 15, and a rear longitudinal brace 16, the tops of the front diagonal brace 13 and the rear diagonal brace 14 are hinged to a first rotating joint 17, one ends of the front longitudinal brace 15 and the rear longitudinal brace 16 are hinged to a second rotating joint 18, the other end of the front longitudinal brace 15 is hinged to the bottom of the front diagonal brace 13, and the other end of the rear longitudinal brace 16 is hinged to the bottom of the rear diagonal brace 14. In this embodiment, the rotational joint has two rotationally connected portions, each of which may be independent from the rod or may be a part of the rod, and is not limited to the structure shown in the drawings.

In the unfolded state, the front longitudinal support rod 15 and the rear longitudinal support rod 16 are horizontally arranged to form a flat rectangular support frame with the transverse support rod 32; in the folded state, the first rotating joint 17 and the second rotating joint 18 are adjacent to each other, specifically: the front longitudinal supporting rod 15 and the rear longitudinal supporting rod 16 rotate relatively, the second rotating joint 18 moves upwards, the front diagonal supporting rod and the rear diagonal supporting rod are pulled to rotate around the first rotating joint 17 and approach to each other, and finally the folding is carried out.

Referring to fig. 1 and 2 again, in one embodiment, the front longitudinal support rod 15 and the rear longitudinal support rod 16 are coplanar, the front diagonal support rod 13 and the rear diagonal support rod 14 are coplanar, the front longitudinal support rod 15 is located at the opposite inner side of the front diagonal support rod 13, and in the unfolded state, the four rod members form a triangular frame, so that the structural strength of the frame is improved. At the transverse visual angle of the folding state, at least one longitudinal supporting rod is overlapped with the corresponding diagonal brace rod, so that the front diagonal brace rod and the rear diagonal brace rod are further drawn together, and the volume after folding is reduced. In a preferred embodiment, the bottom of the frame is provided with a front wheel 41 and a rear wheel 42 for the frame to move, the front wheel 41 and the rear wheel 42 are transversely staggered, and the front wheel 41 and the rear wheel 42 are partially or completely overlapped when folded under a transverse view angle, so that the volume of the folded frame is further reduced.

In one embodiment, the first rotating joint 17 is provided with an adapting seat 171, the adapting seat 171 is detachably inserted and matched with the expansion device 5, and the expansion device 5 can be any accessory capable of interacting with children, such as a seat, a dinner plate or a drawing board, and can also be a retractable plate, and is used for covering the top of the cage-shaped structure to protect privacy or play a role in preventing rain and sun. The extension equipment that can dismantle the connection in the handcart of this application cooperates the switching use that cage structure realized multiple function.

Referring to fig. 1 to 3 again, in one embodiment, the first rotating joint 17 is disposed in the middle and the handle bar 6 is installed in a swinging manner, in a folding state, the bars in the four-bar mechanism and the handle bar 6 are gathered together, and the handle bar 6 can be synchronously folded by linking the bar with one bar in the four-bar mechanism or can be folded independently. The handle bar 6 is obliquely arranged with the horizontal plane in the unfolded state, so that force can be effectively transmitted to the bottom of the frame, and the cart is convenient to control. And the handle rod 6 and the side frame 1 only have one connecting part, so that the height of the side frame can be reduced compared with the traditional structure, and the frame is more exquisite and concise.

In one embodiment, the handle bar 6 is a straight bar in the transverse view, and the handle bar 6 forms an included angle α with the longitudinal direction of the frame, the included angle α satisfies that α is more than 45 degrees and less than 60 degrees, so that the pushing is convenient, and the inclined bar and one of the inclined bars incline in the same direction, and the appearance is simple. In the preferred embodiment, the handle bar 6 is collinear with a diagonal bar, so that the appearance is more concise, the acting force can be effectively transmitted to the wheels, and the steering operation is facilitated.

In one embodiment, the handle bar 6 comprises a lower handle bar 61 and an upper handle bar 62 slidably mounted on the lower handle bar 61, and the upper handle bar 62 is slidably sleeved inside the lower handle bar 61 or outside the lower handle bar 61, so as to facilitate children caregivers with different heights.

The utility model provides a large capacity handcart will bear the function transfer of children's seat to the frame bottom to set up side fender, side bearer and horizontal bracket and form the cage structure who bears children or load children, effectively utilize the longest distance of frame, and promoted direction of height's utilization ratio, under the same frame condition, obtained bigger capacity, can bear two children at least. And the seat is eliminated, and the seat does not need to be disassembled when folded, so that the folding is convenient.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims (10)

1. The high-capacity trolley comprises a trolley frame and wheels mounted at the bottom of the trolley frame, and is characterized in that the trolley frame is provided with opposite transverse and longitudinal directions and comprises two side frames which are oppositely arranged along the transverse direction and a transverse connecting piece connected between the two side frames;

the side frames adopt foldable four-bar linkage mechanisms, the transverse connecting piece comprises two side baffles and a plurality of transverse support rods distributed at the bottoms of the side frames, and two end parts of each side baffle are respectively hinged with the corresponding side frame;

in the unfolded state, the plurality of cross support rods are arranged at the bottom, and the two side frames and the two side baffles are arranged at the periphery, so that the frame is integrally enclosed into a cage-shaped structure with an open top;

in a folding state, all rod pieces in the four-bar mechanism are gathered together, and the two side baffles are close to each other.

2. A large capacity trolley as claimed in claim 1, wherein the side bars are U-shaped frames on opposite inner sides of the side frames, the side bars overlapping the side frames in the collapsed condition.

3. A high capacity pushchair according to claim 1, wherein an open-topped inner pocket is provided within said cage structure for carrying a child or an item.

4. A large capacity hand truck as claimed in claim 3, wherein the inner bag is suspended or sleeved from the side wall and the bottom bracket is attached to the cross bracket bar.

5. A large capacity hand truck as claimed in claim 3, wherein at least one of the side stops is provided with an open-topped basket, said basket including a support frame hingedly connected to the side stop and a deformable basket body.

6. A large capacity trolley according to claim 5, wherein the basket body is integral with the inner bag and in use is nested or suspended on the support frame.

7. A high capacity trolley according to claim 1, wherein the side ledges and the side frames are pivotally engaged and wherein locking means are provided at the pivotal engagement to restrict relative pivotal movement of the side ledges, the locking means comprising:

the locking block is fixedly arranged on the side frame and is provided with at least two locking grooves;

a locking pin which is slidably mounted in the side block and can extend into one of the locking grooves to limit the side block to rotate relative to the side frame;

the first elastic piece is installed in the side block and used for driving the locking pin to extend into the locking groove.

8. A large capacity trolley as claimed in claim 7, wherein the side bar is provided with an unlocking means for unlocking the locking means, the unlocking means comprising an unlocking member slidably mounted on the side bar, a wire having both ends connected to the unlocking member and the locking pin, respectively, and a second elastic member for urging the unlocking member to return, the locking pin being slidably withdrawn from the locking groove along with the unlocking member by the wire.

9. The high capacity cart of claim 1, wherein the side frame comprises a front diagonal brace, a rear diagonal brace, a front longitudinal brace, and a rear longitudinal brace, wherein the tops of the front diagonal brace and the rear diagonal brace are hinged to the first revolute joint, one ends of the front longitudinal brace and the rear longitudinal brace are hinged to the second revolute joint, the other end of the front longitudinal brace is hinged to the bottom of the front diagonal brace, and the other end of the rear longitudinal brace is hinged to the bottom of the rear diagonal brace; in the unfolded state, the front longitudinal support rod and the rear longitudinal support rod are horizontally arranged.

10. A large capacity hand truck as claimed in claim 1, wherein the wheels include front and rear wheels, the front and rear wheels being laterally offset and partially or fully overlapping when stowed.

Images