CN103434555B - A kind of Folding trolley - Google Patents

Abstract

The invention discloses a kind of Folding trolley, including the vehicle frame with expanded position and folding position, it is arranged on the front-wheel of vehicle frame lower front, it is arranged on the trailing wheel of vehicle frame lower rear, for vehicle frame being locked in the locking device under expanded position or folding position, described vehicle frame includes fixed mount, it is positioned at two side stands of both sides, for connecting two side stands and can the lateral frame of horizontal folding, the side stand of every side includes that bottom rotates with fixed mount the fore-stock being connected, top rotates with fore-stock the after-poppet being connected, bottom slidable and the push rod being rotatably arranged on after-poppet, the seat bar on after-poppet is slidably and rotatably located at rear portion, the upper slidable of fore-stock and being rotatably arranged on push rod.Only need when Folding trolley to unlock device lock-out state can folding bicycle frame, the state that vehicle frame erects in vertical direction after folding easily, operator without operation of bending over, uses more convenient when folding or launch vehicle frame.

Description

a folding cart

technical field

The invention relates to a folding cart.

Background technique

In the prior art, the frame of the stroller has an unfolded position and a folded position. When the frame is folded, the locking device on the frame is unlocked, and the frame realizes vertical folding in the up and down direction, and the user needs to bend over to operate , you also need to bend over to open it when opening it, which is inconvenient to use.

Contents of the invention

The object of the present invention is to overcome the disadvantages of the prior art and provide a folding stroller that can fold and unfold the frame without bending over.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A folding stroller comprising a frame having an unfolded position and a folded position, front wheels mounted under the front of the frame, rear wheels mounted under the rear of the frame, The locking device locked in the unfolded position, the vehicle frame includes two side brackets on both sides, a fixing frame at the front end of the side brackets, and a horizontally foldable horizontal bracket for connecting the two side brackets , the front wheels are mounted on the bottom of the fixed frame, and each of the side brackets includes

a front bracket, the lower part of the front bracket is rotatably connected to the fixed frame;

a rear bracket, the upper part of the rear bracket is rotatably connected to the middle part of the front bracket, and the rear wheels are mounted on the bottom of the rear bracket;

A push rod, the lower part of the push rod is rotatably provided with a first sliding member, the first sliding member is slidably arranged on the rear support along the length direction of the rear support, and the middle part of the push rod is provided with There is a second slider that can slide along the length direction of the push rod, and the upper part of the front bracket is rotatably connected with the second slider;

A seat post, the front part of the seat post is hinged to the middle part of the front bracket, and the rear part of the seat post is slidably and rotatably connected to the middle part of the rear bracket.

Preferably, the rear portion of the seatpost is rotationally connected to the lower portion of the pushrod.

Preferably, the cross bracket includes a first connecting rod and a second connecting rod intersecting, the upper part of the first connecting rod is slidably and rotatably connected to the middle part of the push rod on one side, and the lower part is connected to the middle part of the push rod on one side. The rear bracket on the other side is rotatably connected; the upper part of the second link is slidably and rotatably connected to the middle part of the push rod on the other side, and its lower part is connected to the rear bracket on one side. Turn to connect.

Further preferably, the upper part of the first link is rotatably connected to the second slider on one side or the upper part of the front bracket; the upper part of the second link is rotatably connected to the other side on the second slider or on the upper part of the front bracket.

Preferably, the first sliding member is a first sliding sleeve slidably sleeved on the rear bracket.

Preferably, the second sliding member is a second sliding sleeve slidably sleeved on the push rod.

Preferably, the locking device is a locking member for locking the second sliding member on the push rod, the locking member has at least two locking positions, and in the first locking position, the second The sliding part is fixedly located at the lower part of the push rod, the first sliding part is located at the upper part of the rear bracket, and the frame is at the unfolded position; in the second locked position, the second sliding part is fixedly located at the The upper part of the push rod, the first sliding member is located at the lower part of the rear bracket, and the vehicle frame is located at the folded position.

Preferably, there is one set of the front wheels, and the front wheels are installed under the middle part of the fixing frame.

Preferably, the fixing frame is an arc-shaped frame whose two ends are respectively bent backwards.

Preferably, both sides of the fixing bracket are provided with limiting slots for limiting the front bracket.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: in the foldable cart of the present invention, the folded frame stands up on the ground, and the user does not need to fold it or unfold it. Bend to operate, more convenient to use.

Description of drawings

Accompanying drawing 1 is the perspective view that the cart of the present invention is in a fully expanded state;

Accompanying drawing 2 is the side view of the cart of the present invention in a fully expanded state;

Accompanying drawing 3 is the perspective view of the cart of the present invention in a half-folded state;

Accompanying drawing 4 is the side view of the cart of the present invention in a half-folded state;

Accompanying drawing 5 is the perspective view of the cart of the present invention in a fully folded state;

Accompanying drawing 6 is the side view of the stroller of the present invention in a fully folded state.

Among them: 1. Side support; 11. Push rod; 12. Front support; 13. Rear support; 14. First sliding part; 15. Second sliding part; 16. Seat post; 2. Fixed frame; 3. Front wheel ; 4, rear wheel; 5, cross support; 51, the first connecting rod; 52, the second connecting rod.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments of the present invention.

Referring to the folding cart shown in Figures 1-6, the cart includes a vehicle frame with an unfolded position and a folded position, a front wheel 3 installed under the front of the frame, a rear wheel 4 installed under the rear of the frame, And a locking device (not shown) for stably locking the frame in the unfolded or folded position. The front and rear directions mentioned in this embodiment are defined according to the habits of the stroller during normal use. The forward direction is the front, and the opposite is the rear. left and right directions.

The frame of the stroller includes a fixed frame 2, two side supports 1 on both sides, and a horizontally foldable horizontal support 5 for connecting the two side supports 1. Front-wheel 3 is one and is installed in the middle part below of fixed mount 2, and fixed mount 2 is the arc frame that both ends all bend backward. Each side bracket 1 comprises a push rod 11, a front bracket 12, a rear bracket 13, and a seatpost 16, and the bottom of the front bracket 12 is connected to the two ends of the fixed bracket 2 in a rotational manner, and the fixed bracket 2 is provided with a front bracket 12 for The position-limiting slot 21 of the limit, the top of the rear support 13 is rotationally connected to the top of the front support 12, and the rear wheel 4 is installed on the bottom of the rear support 13. The lower part of the push rod 11 is rotatably provided with a first slider 14, which is slidably arranged on the rear bracket 13 along the axial direction of the rear bracket 13, and the push rod 11 is provided with a second slider 15, The second sliding member 15 is slidably arranged on the push rod 11 along the axial direction of the push rod 11 , and the upper part of the front bracket 12 is rotatably connected with the second sliding member 15 . The first sliding member 14 can be a first sliding sleeve that is slidably sleeved on the rear bracket 13 , and the second sliding member 15 can be a second sliding sleeve that is slidably sleeved on the push rod 11 . The front end of the seatpost 16 is hinged on the middle part of the front bracket 12, and its rear end is rotatably connected to the lower part of the push rod 11 or the first slider 14, so that the rear end of the seatpost 16 is slidably and rotatably connected On the middle part of rear support 13.

In this embodiment, the cross bracket 5 includes a first connecting rod 51 and a second connecting rod 52 intersecting. The two ends of the second connecting rod 52 are respectively rotatably connected with the rear bracket 13 on the right side and the second sliding member 15 on the left side. Here, the locking device is a locking piece (not shown in the figure) for locking the second sliding piece on the push rod 11, and the locking piece has at least two locking positions, and these two locking positions correspond to the vehicle frame respectively. The locking position of the locking member to the second sliding member 15 when it is in the unfolded position or the folded position.

Referring to Fig. 1 and Fig. 2, it shows that when the cart frame is fully expanded, the locking member is located at the first locking position, the second sliding member 15 is fixedly located at the lower part of the push rod 11, and the first sliding member 14 is located at the rear bracket 13 upper part. When it needs to be unlocked, as shown in Fig. 3 and Fig. 4, first unlock the locking part between the second sliding part 15 and the push rod 11, turn the push rod 11 forward, and slide the first sliding part 14 along the rear bracket 13 At the same time, the second sliding member 15 slides upward along the axial direction of the push rod 11 to drive the front bracket 12 to turn backward, so that the front and rear directions of the vehicle frame are folded, and the second sliding member 15 slides upwards to drive the first connecting rod 51 and the first connecting rod 51 and the second sliding member. The upper end of the two connecting rods 52 moves up, so that the horizontal bracket 5 is folded horizontally from the left to the right, and the distance between the two push rods 11 gradually decreases, and drives the front bracket 11 to rotate around the rotation connection point between it and the fixed frame 2 to realize Horizontal fold. When it is to be folded to a specific position, the locking member is located at the second locking position to lock the second sliding member 15 on the push rod 11 so that the vehicle frame is stably in the folded position, and the vehicle frame stands vertically in the folded position. state, as shown in Figure 5 and Figure 6. Conversely, when unlocking, it is only necessary to release the locking of the second sliding sleeve 15 by the locking member, and the vehicle frame will automatically unfold under the action of gravity until the locking member locks the second sliding sleeve 15 on the push rod 11 again so that the vehicle frame Stable in the deployed position. In the process of folding or unfolding the frame, the user does not need to bend down to operate, and the folding and unfolding are more convenient. At the same time, the frame of the cart has a simple structure, fewer rods, and the folded structure is compact and occupies a small area. , has good practical performance.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. A folding stroller comprising a frame with an unfolded position and a folded position, front wheels (3) mounted under the front of the frame, rear wheels (4) mounted under the rear of the frame . A locking device for locking the vehicle frame in the unfolded position, characterized in that the vehicle frame includes two side brackets (1) located on both sides, and a fixing bracket located at the front end of the side brackets (1) (2) A horizontal bracket (5) that is used to connect the two side brackets (1) and can be folded horizontally. The front wheel (3) is installed on the bottom of the fixed frame (2). The side brackets (1) include The front bracket (12), the lower part of the front bracket (12) is rotatably connected to the fixed frame (2), and the two sides of the fixed frame (2) are provided for the front bracket (12) Limiting slot (21); a rear bracket (13), the upper part of the rear bracket (13) is rotatably connected to the middle part of the front bracket (12), and the rear wheel (4) is installed on the bottom of the rear bracket (13); The push rod (11), the lower part of the push rod (11) is rotatably provided with a first sliding member (14), and the first sliding member (14) is slidable along the length direction of the rear bracket (13) Set on the rear bracket (13), the middle part of the push rod (11) is provided with a second sliding piece (15) that can slide along the length direction of the push rod (11), and the front bracket (12 ) is rotationally connected with the second sliding member (15); Seat post (16), the front part of the seat post (16) is hinged with the middle part of the front bracket (12), the rear part of the seat post (16) and the middle part of the rear bracket are slidable and can rotationally connected, The cross bracket (5) includes a first connecting rod (51) and a second connecting rod (52) intersecting, the upper part of the first connecting rod (51) is connected with the push rod (11) on one side The middle part is slidably and rotatably connected, and its lower part is rotatably connected to the rear bracket (13) on the other side; the upper part of the second connecting rod (52) is connected to the push rod (11) on the other side The middle part is slidably and rotatably connected, and the lower part is rotatably connected with the rear bracket (13) on one side. 2. A folding stroller according to claim 1, characterized in that: the rear part of the seat post (16) is rotatably connected to the lower part of the push rod (11). 3. A folding cart according to claim 1, characterized in that: the upper part of the first link (51) is rotatably connected to the second sliding member (15) on one side or the The upper part of the front bracket (12); the upper part of the second link (52) is rotatably connected to the second slider (15) on the other side or the upper part of the front bracket (12). 4. A folding cart according to claim 1, characterized in that: the first sliding member (14) is a first sliding sleeve slidably sleeved on the rear bracket (13). 5. The folding cart according to claim 1, characterized in that: the second sliding member (15) is a second sliding sleeve slidably sleeved on the push rod (11). 6. A folding cart according to claim 1 or 5, characterized in that: the locking device is a locking device for locking the second slider (15) on the push rod (11) The locking member has at least two locking positions. In the first locking position, the second sliding member (15) is fixedly located at the lower part of the push rod (11), and the first sliding member (14) Located on the upper part of the rear bracket (13), the frame is in the unfolded position; in the second locked position, the second slider (15) is fixedly located on the upper part of the push rod (11), the first The sliding piece (14) is located at the lower part of the rear bracket (13), and the vehicle frame is located at a folded position. 7. A folding stroller according to claim 1, characterized in that: the front wheels (3) have one set, and the front wheels (3) are installed under the middle of the fixing frame (2). 8. A folding stroller according to claim 1, characterized in that: the fixing frame (2) is an arc-shaped frame whose two ends are respectively bent backwards.