CN206384008U - Children trolley - Google Patents

Abstract

The utility model discloses a kind of children trolley, its vehicle frame includes front-wheel support, rear wheel support, push-rod assembly, link assembly and seat bar, wherein in these three parts of the top of the bottom of push-rod assembly, the top of front-wheel support and rear wheel support, two of which part phase pivot is connected and the 3rd part is pivotally connected on a part in both of the aforesaid part, or three above-mentioned parts mutually pivot together；Link assembly includes first connecting rod and second connecting rod, and the bottom of first connecting rod and the bottom phase pivot of front-wheel support are connected, and the top of first connecting rod and the bottom phase pivot of second connecting rod are connected, and the upper pivot of second connecting rod is connected on push-rod assembly；The front portion of seat bar is pivotally connected on second connecting rod and the back pivot of seat bar is connected on rear wheel support；During vehicle frame folding, it is only necessary to push-rod assembly is overturn to each rod member that just may be such that on vehicle frame towards front and relatively rotates and gradually draws in together.

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

In the prior art, there are various types and structures of strollers, which generally include a foldable stroller frame, a wheel assembly located at the bottom of the stroller frame, and a lock for locking the stroller frame in an unfolded state. locking mechanism. At present, there are various types of cart frames, the number of rods is different, and the connection relationship and connection position between the rods are all different, so the folding principles and folding methods of the cart frames are also different. How to simplify the structure of the stroller frame, simplify the folding and opening operations of the frame, and reduce the volume of the folded frame as much as possible on the basis of ensuring a stable load for children has always been the goal pursued by those skilled in the art.

Contents of the invention

The purpose of the utility model is to provide a child stroller with simple structure and convenient folding.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a children's stroller, including a frame with an unfolded state and a folded state, and a frame locking mechanism for locking the frame in the unfolded state. The frame includes:

a front wheel bracket, the lower part of which is provided with a front wheel assembly;

a rear wheel bracket, the lower part of which is provided with a rear wheel assembly;

a push rod assembly, the lower part of the push rod assembly, the upper part of the front wheel support and the upper part of the rear wheel support, two of which are pivotally connected and the third part is pivotally connected to One of the aforementioned two components, or the three components are pivotally connected to each other;

The connecting rod assembly includes a first connecting rod and a second connecting rod, the lower part of the first connecting rod is pivotally connected to the lower part of the front wheel bracket, and the upper part of the first connecting rod is connected to the second connecting rod the lower portion of the rod is pivotally connected, and the upper portion of the second link is pivotally connected to the push rod assembly;

a seat post pivotally connected at the front to the second link and at the rear pivotally connected to the rear wheel carrier;

When the vehicle frame is folded, the push rod assembly turns forward, drives the first connecting rod and the second connecting rod to turn over and fold relative to each other, and makes the front wheel bracket, rear wheel bracket and seat post relatively rotate and Gradually gather together.

Preferably, the link assembly is arranged in front of the front wheel bracket.

Preferably, when the vehicle frame is in an unfolded state, the first connecting rod and the second connecting rod extend along the same length direction.

Preferably, the lower part of the push rod assembly, the upper part of the front wheel bracket and the upper part of the rear wheel bracket are rotatably connected together through a rotary joint.

Further, the lower part of the push rod assembly, the upper part of the front wheel bracket and the upper part of the rear wheel bracket are pivotally connected around the same rotating shaft, and the frame locking mechanism is arranged on the rotating joint It is used to lock the above three components relative to each other.

Preferably, the push rod assembly includes a backrest rod extending in the up and down direction, and a push handle rod whose lower part is rotatably connected to the upper part of the backrest rod and can be folded relative to the backrest rod. When the vehicle frame is folded, The push handle bar is turned over and moved closer to the rear of the backrest bar to realize the folding of the push handle assembly, and then is folded together with other rods on the vehicle frame.

As another embodiment, the push rod assembly includes a backrest rod extending in the up and down direction, and a push handle rod whose lower part is rotatably connected to the upper part of the backrest rod and can be folded relative to the backrest rod. When the frame is folded, the push rod assembly is turned forward so that the first connecting rod, the second connecting rod, the front wheel bracket, the rear wheel bracket, the seat post and the push rod assembly are relatively rotated and folded, and the push handle The bars are flipped back and brought together behind the back bar.

Preferably, the front wheel assembly is a universal wheel, and when the frame is folded, the rear wheel bracket rotates forward toward the front wheel bracket, and the front wheel assembly rotates 180° relative to the front wheel bracket The rear is folded together with the rear wheel assembly.

Preferably, the front wheel bracket includes two front struts which are arranged on the left and right sides and extend upwards gradually from the front to the rear, and an upper cross bar fixedly connected between the upper parts of the front struts on both sides, and the rear The wheel bracket includes at least two rear struts arranged on the left and right sides and extending in the up and down direction. The push rod assembly includes at least two sets of push rod side rods arranged on both sides. On one side, the upper part of the rear support rod, the lower part of the push rod side rod and the shaft end of the upper cross bar are rotatably connected.

Further, the connecting rod assembly has two groups arranged on the left and right sides, on each side of the left and right sides of the vehicle frame, the connecting rod assembly is connected to the lower part of the front strut and the push rod Between the side bars; the seat post is U-shaped with an opening facing forward. Located between the pushrod side bars on both sides.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art: the vehicle frame of the children's stroller of the utility model only includes a front wheel bracket, a rear wheel bracket, a push rod assembly, a connecting rod assembly and a seat; When the vehicle frame is folded, it is only necessary to turn the push rod assembly forward to make the rods on the vehicle frame rotate relative to each other and gradually gather together. The stroller has a small number of rods, a simple structure, and is easy to fold and operate. After folding, the frame structure is flat and small, which brings convenience to customers' daily use.

Description of drawings

Accompanying drawing 1 is the three-dimensional view one under the expanded state of the children's stroller of Embodiment 1 of the present utility model;

Accompanying drawing 2 is the side view of the expanded state of the children's stroller of embodiment 1;

Accompanying drawing 3 is the second perspective view of the expanded state of the children's stroller in Embodiment 1;

Accompanying drawing 4 is the side view 1 in the folding process of the stroller of embodiment 1;

Accompanying drawing 5 is the side view 2 in the folding process of the stroller of embodiment 1;

Accompanying drawing 6 is the side view 3 in the folding process of the stroller of embodiment 1;

Accompanying drawing 7 is the side view four in the folding process of the stroller of embodiment 1;

Accompanying drawing 8 is the side view of the folded state of the children's stroller of Embodiment 1;

Accompanying drawing 9 is the perspective view of the folded state of the children's stroller of Embodiment 1;

Accompanying drawing 10 is the side view of the expanded state of the children's stroller of Embodiment 2;

Accompanying drawing 11 is the side view of the folding process of the stroller of embodiment 2;

Accompanying drawing 12 is the side view of the folded stroller of embodiment 2;

Among them: 1. Front wheel support; 11. Front support rod; 12. Upper cross bar; 13. Foot pedal; 10. Front wheel assembly; 2. Rear wheel support; 21. Rear support rod; 22. Rear cross bar; 20. Rear wheel assembly; 3. Push rod assembly; 31. Backrest rod; 32. Push handle rod; 33. Push rod lock; 4. Connecting rod assembly; 41. First connecting rod; 42. Second connecting rod; 5. Seat post; 51. Seat post side bar; 6. Rotary joint; 7. Backrest board.

detailed description

The technical solution of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

Example 1

Referring to the children's stroller shown in Fig. 1 to Fig. 9, it includes a vehicle frame in an unfolded state and a folded state, a front wheel assembly 10 arranged at the bottom front of the frame, and a rear wheel assembly 20 arranged at the bottom rear of the frame , and a frame locking mechanism for locking the frame in the unfolded state.

This vehicle frame comprises the front wheel support 1 that is provided with front wheel assembly 10 at the bottom, the rear wheel support 2 that is provided with rear wheel assembly 20 at the bottom, and push rod assembly 3, wherein, the bottom of push rod assembly 3, the front wheel support 1 Of the three parts of the upper part and the upper part of the rear wheel support 2, two of the parts are pivotally connected and the third part is pivotally connected to one of the aforementioned two parts, or the above-mentioned three parts are pivotally connected to each other connected together.

The vehicle frame also includes a connecting rod assembly 4 and a seat post 5. The connecting rod assembly 4 includes a first connecting rod 41 and a second connecting rod 42. The first connecting rod 41 and the second connecting rod 42 extend gradually upwards along the front and rear directions respectively. . The lower part of the first link 41 is pivotally connected to the lower part of the front wheel bracket 1, the upper part of the first link 41 is pivotally connected to the lower part of the second link 42, and the upper part of the second link 42 is pivotally connected. On push rod assembly 3. The seat post 4 generally extends in the front-rear direction, the front portion of the seat post 4 is pivotally connected to the second link 42 and the rear portion of the seat post 4 is pivotally connected to the rear wheel bracket 2 .

In this embodiment, referring to Fig. 1 to Fig. 9, the upper part of the front wheel bracket 1, the upper part of the rear wheel bracket 2 and the lower part of the push rod assembly 3 are connected together through the rotary joint 6 to rotate, Specifically, the above three components may be configured to be pivotally connected around the same rotating shaft. The frame locking mechanism (not shown in the figure) can be arranged at the swivel joint 6 to lock the front wheel bracket 1, the rear wheel bracket 2 and the push rod assembly 3, so that the rods on the frame are locked relative to each other .

In this embodiment, the specific setting of each rod/component on the vehicle frame is as follows:

Referring to Fig. 1 to Fig. 9, the front wheel bracket 1 includes two front struts 11 which are respectively arranged on the left and right sides and gradually extend upward from front to rear, and an upper horizontal rail fixed between the upper ends of the front struts 11 on both sides. Rod 12, the pedal 13 that is fixedly arranged between the lower ends of the two front struts 11 on both sides. There are two groups of front wheel assemblies 10 and they are respectively arranged at the bottom of the front struts 11 on both sides or the left and right ends of the pedals 13 . Here, the two groups of front wheel assemblies 10 all adopt universal wheels, and the wheel seat can rotate relative to the front strut 11 to drive the front wheel body to rotate, so that the pushing direction of the cart can be changed while the cart is running.

The rear wheel support 2 includes two rear struts 21 which are respectively arranged on the left and right sides and extend along the up and down direction, and a rear cross bar 22 fixed between the bottoms of the rear struts 21 on both sides. The rear wheel assembly 20 has two groups and They are separately arranged at the bottoms of the rear struts 21 on both sides.

The push rod assembly 3 has push rod side rods respectively located on the left and right sides. On each side of the left and right sides of the vehicle frame, the lower part of the push rod side rod, the upper part of the rear strut 21 and the shaft end of the upper cross bar 12 are connected. Turn to connect. Specifically, the push rod assembly 3 includes a back bar 31 extending in the up and down direction, and a push bar 32 whose lower part is rotatably connected to the upper part of the back bar 31 and can be folded and folded relative to the back bar 31, wherein the back bar 31 has a separate On the two left and right sides, the push bar 32 is U-shaped with the opening facing downwards, and the two sides of the lower part are pivotally connected with the upper parts of the corresponding side back bars 31 respectively.

The position where the backrest bar 31 on each side is rotatably connected to the push handle bar 32 is also provided with a push bar locking member 33 for locking the two. After the push rod lock 33 is unlocked, the push rod 32 can be turned backward so that the push rod 32 can be folded relative to the backrest rod 31 and the push rod assembly 3 can be folded. When specifically set, the push rod lock 33 is set to be unlocked in conjunction with the frame lock mechanism, and it can also be set to automatically unlock the push rod lock 33 and drive the frame lock mechanism to unlock synchronously when the push handle bar 32 is pressed down. structure to facilitate the folding operation of the frame.

On each side of the left and right sides of the vehicle frame, the bottom of the backrest bar 31, the top of the rear strut 21, and the shaft ends of the corresponding sides of the upper cross bar 12 are connected through the rotary joint 6. During specific arrangement, the upper cross bar can be 12 is used as the rotation axis when the backrest bar 31 and the rear support bar 21 rotate relative to the front bracket 1 respectively.

The link assembly 4 has two groups respectively arranged on the left side and the right side of the vehicle frame. On each side of the left and right sides of the vehicle frame, the link assembly 4 is connected between the lower part of the front strut 11 and the backrest bar 31, wherein , the upper part of the second link 42 is pivotally connected to the backrest bar 31 and is positioned above the swivel joint 6 on the backrest bar 31 . The connecting rod assembly 4 is located in front of the front wheel bracket 1 on the vehicle frame. When the vehicle frame is in the unfolded state, the first connecting rod 41 and the second connecting rod 42 on the same side extend along the same length direction and are supported on the backrest rod 31. and the front strut 11.

The seat post 5 is U-shaped with an opening facing forward, and has seat post side bars 51 arranged on the left and right sides and extending roughly along the front and rear directions, and two front struts 11 are located on both sides of the push bar side bars 51 along the left and right directions. between. On each side of the left and right sides of the frame, the front portion of the seat post side bar 51 is pivotally connected to the middle portion of the second link 42, and the rear portion is pivotally connected to the rear strut 21 below the swivel joint 6 location.

Referring to the accompanying drawings, the vehicle frame also includes a backboard 7, which is located between the backrest bars 31 on both sides along the left and right directions, and the lower part of the backboard 7 is connected to the upper crossbar 12 in a rotatable manner around the upper crossbar 12. superior.

Referring to Fig. 1 to Fig. 3, when the stroller is locked in the unfolded state, the push handle bar 32 and the backrest bar 31 are relatively expanded and relatively locked by the push bar locking member 33, and the front wheel bracket 1 and the rear wheel 2 Relatively deployed and supported on the ground, the first link 41 and the second link 42 of the link assembly 4 are stably supported between the backrest bar 31 and the front wheel bracket 1 . The stroller has good stability in the unfolded state, and can provide stable support for the child to sit and stand for pushing.

When it is necessary to fold the stroller, the operator first presses down the push bar 32 to make it turn backwards relative to the back bar 31, so that the push bar lock 33 is unlocked and the push bar 32 is moved closer to the back bar 31, as shown in Figure 4, at this moment, the vehicle frame lock is also unlocked by linkage. Then, the push bar 32 is turned forward together with the backrest bar 31, so that the second connecting rod 42 moves forward and rotates relative to the first connecting rod 41 and makes the first connecting rod 41 turn forward relative to the front wheel bracket 1, and the second When the connecting rod 42 moves forward, it simultaneously drives the front part of the seat post 5 to move forward, so that the rear wheel bracket 2 gradually rotates forward toward the front wheel bracket 1, as shown in FIG. 5 . In the above folding process, after the front wheel bracket 1 and the rear wheel bracket 2 are folded together, the front wheel assembly 10 is rotated 180° forward relative to the front wheel bracket 1, so that the front wheel assembly 10 and the rear wheel assembly 20 are relatively close together , to reduce the overall folded volume of the frame, as shown in Figures 6 and 7. During the above folding process, since the front wheel bracket 1 is connected to the bottom of the first connecting rod 41 and the first connecting rod 41 is turned forward relative to the front wheel bracket 1, the distance between the lower part of the first connecting rod 41 and the rotating joint 6 after folding is constant.

Finally, the first connecting rod 41, the second connecting rod 42, the seatpost 5, the backrest rod 31, the push handle rod 32, the front wheel bracket 1, and the rear wheel bracket 2 are folded together to complete the folding of the stroller, as shown in the figure As shown in 8 and 9, the folded stroller presents a very flat structure and occupies less space.

Example 2

Referring to Fig. 10 to Fig. 12, the structure of the stroller of this embodiment is basically the same as that of Embodiment 1, the main difference is that another folding method is adopted. Specifically, as shown in FIG. 11 , the operator first unlocks the frame lock, and then turns the push rod assembly 3 forward, so that the second link 42 moves forward and rotates relative to the first link 41 and makes the first link 42 move forward. The rod 41 flips forward relative to the front wheel bracket 1, and the second connecting rod 42 drives the front part of the seat post 5 to move forward during the forward movement, so that the rear wheel bracket 2 gradually rotates forward toward the front wheel bracket 1. After the front wheel bracket 1 and the rear wheel bracket 2 are folded together, the front wheel assembly 10 is rotated 180° forward relative to the front wheel bracket 1, so that the front wheel assembly 10 and the rear wheel assembly 20 are relatively close together. During the above process, the push rod locking member 33 is unlocked in conjunction, and the operator finally turns the push handle rod 32 backwards to make it close to the rear of the backrest rod 31 to realize the folding of the vehicle frame. The folded structure is shown in FIG. 12 , which is the same as the structure obtained by adopting the folding method of Example 1.

To sum up, the children's stroller of the present invention has a small number of rods, a simple structure, and convenient folding operation. After folding, the frame structure is flat and small, which brings convenience to customers' daily use.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model, and its purpose is to allow those familiar with this technology to understand the content of the utility model and implement it accordingly, and not to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (10)

1. A child stroller, comprising a vehicle frame having an unfolded state and a folded state, and a vehicle frame locking mechanism for locking the vehicle frame in the expanded state, characterized in that: the vehicle frame comprises: a front wheel bracket, the lower part of which is provided with a front wheel assembly; a rear wheel bracket, the lower part of which is provided with a rear wheel assembly; a push rod assembly, the lower part of the push rod assembly, the upper part of the front wheel support and the upper part of the rear wheel support, two of which are pivotally connected and the third part is pivotally connected to One of the aforementioned two components, or the three components are pivotally connected to each other; The connecting rod assembly includes a first connecting rod and a second connecting rod, the lower part of the first connecting rod is pivotally connected to the lower part of the front wheel bracket, and the upper part of the first connecting rod is connected to the second connecting rod the lower portion of the rod is pivotally connected, and the upper portion of the second link is pivotally connected to the push rod assembly; a seat post pivotally connected at the front to the second link and at the rear pivotally connected to the rear wheel carrier; When the vehicle frame is folded, the push rod assembly turns forward, drives the first connecting rod and the second connecting rod to turn over and fold relative to each other, and makes the front wheel bracket, rear wheel bracket and seat post relatively rotate and Gradually gather together. 2. The stroller for children according to claim 1, wherein the link assembly is arranged in front of the front wheel bracket. 3. The children's stroller according to claim 1, wherein when the vehicle frame is in an unfolded state, the first connecting rod and the second connecting rod extend along the same length direction. 4. The children's stroller according to claim 1, characterized in that: the lower part of the push rod assembly, the upper part of the front wheel support and the upper part of the rear wheel support are three components that rotate through the rotating joint connected together. 5. The children's stroller according to claim 4, wherein the lower part of the push rod assembly, the upper part of the front wheel bracket and the upper part of the rear wheel bracket are pivoted around the same rotation axis connected, the frame locking mechanism is arranged on the swivel joint for relatively locking the above three components. 6. The children's stroller according to claim 1, wherein the push rod assembly includes a backrest rod extending in the up and down direction, and the lower part is rotatably connected to the upper part of the backrest rod so as to be able to move relative to the backrest rod The folded push handle bar, when the vehicle frame is folded, the push handle bar is turned over to the back of the backrest bar to realize the folding of the push handle assembly, and then folded together with other rods on the vehicle frame Together. 7. The children's stroller according to claim 1, characterized in that: the push rod assembly includes a backrest rod extending in the up and down direction, the lower part is rotatably connected with the upper part of the backrest rod so as to be rotatable relative to the backrest rod The folded push handle rod, when the vehicle frame is folded, the push rod assembly is turned forward so that the first connecting rod, the second connecting rod, the front wheel bracket, the rear wheel bracket, the seat post and the push rod After the assembly is relatively rotated and folded, the push handle bar is reversed and moved closer to the back of the backrest bar. 8. The children's stroller according to claim 1, wherein the front wheel assembly is a universal wheel, and when the frame is folded, the rear wheel bracket rotates forward toward the front wheel bracket, The front wheel assembly is retracted with the rear wheel assembly after being rotated 180° relative to the front wheel bracket. 9. The stroller according to any one of claims 1 to 8, characterized in that: the front wheel bracket includes two front support rods which are respectively arranged on the left and right sides and gradually extend upward from front to back, and are fixedly connected to the The upper cross bar between the upper parts of the front struts on both sides, the rear wheel bracket at least includes two rear struts that are separately arranged on the left and right sides and extend along the up and down direction, and the push rod assembly includes at least two Two sets of push rod side rods on the side, on each side of the left and right sides of the frame, the upper part of the rear support rod, the lower part of the push rod side rod and the shaft end of the upper cross bar connect. 10. The children's stroller according to claim 9, characterized in that: the connecting rod assembly has two groups respectively arranged on the left and right sides, and on each side of the left and right sides of the frame, the connecting rod assembly Connected between the lower part of the front support rod and the push rod side rod; A seat post side bar, the front support bar is located between the push bar side bars on both sides along the left and right direction.