CN105346586B - Children trolley - Google Patents

Abstract

The invention relates to a stroller for children. The stroller includes a vehicle frame, a front wheel assembly, a rear wheel assembly, a front wheel bracket of the vehicle frame, a rear wheel bracket, a cushion bar and a push rod. The front wheel bracket is rotatably connected with the push rod, the push rod is rotatably connected with the rear wheel bracket, the seat cushion rod is rotatably connected with the front wheel bracket and the rear wheel bracket respectively, and the vehicle frame also includes a swing rod, which is rotated with the push rod and the rear wheel bracket respectively connected, the length of the rear wheel support can be adjusted, and the rear wheel support is provided with an elastic device. When the vehicle frame is unfolded, the energy of the elastic device is released to make the rear wheel support elongate, and the vehicle frame is automatically deployed. The folding and unfolding of the stroller can be realized by adjusting the length of the rear wheel bracket; through the setting of the pedal, the user can step on the pedal to adjust the length of the rear wheel bracket and then realize the folding of the stroller. The folding method is novel and easy to use; The folded front wheel assembly and the rear wheel assembly are side by side so that the folded stroller can stand on the ground for convenient storage.

Description

stroller

technical field

The invention relates to a stroller for children.

Background technique

At present, in order to be convenient to carry and to reduce the occupied space when not in use, children's strollers are all designed to have a structure with a folding function. However, most of the existing folding methods for children’s strollers are to fold the parts after unlocking the frame. Most of the parts are rigid parts and can only be folded through the joints connected by the parts. The steps are cumbersome. The folding operation takes a long time.

Contents of the invention

The technical problem to be solved by the present invention is to provide a child stroller with simple structure, novel folding method and convenient operation.

In order to solve the above-mentioned technical problems, a technical solution adopted by the present invention is: a kind of children's stroller, including a vehicle frame with an expanded state and a folded state, a front wheel assembly, a rear wheel assembly and locking the vehicle frame in the expanded state and the folded state. The locking device of the state, the vehicle frame includes a front wheel bracket whose bottom is connected with the front wheel assembly, a rear wheel bracket whose bottom is connected with the rear wheel assembly, a seat bar and a push rod. The front wheel support is rotatably connected to the push rod through a pivot, the push rod is rotatably connected to the rear wheel support through a pivot, and the cushion rod is rotatably connected to the front wheel support and the rear wheel support through a pivot respectively. The frame also includes a swing bar, which is pivotally connected to the push rod and the rear wheel bracket respectively through a pivot shaft. The length of the rear wheel bracket can be adjusted, and an elastic device is provided on the rear wheel bracket. When the vehicle frame When folding, the rear wheel bracket shrinks, and the elastic device is compressed to store energy; when the vehicle frame is unfolded, the energy of the elastic device is released to extend the rear wheel bracket, and the vehicle frame is fully or partially unfolded automatically.

Specifically, the rear wheel support includes a first rod and a second rod, the upper part of the first rod is pivotally connected to the push rod, the lower part of the second rod is connected to the rear wheel assembly, The first rod is slidably connected to the second rod, the first rod and the second rod are arranged on the same straight line, and the first rod can slide along the length direction of the second rod.

Preferably, the second rod is a hollow tubular rod, the first rod is passed through the second rod and can slide in the second rod, and the upper part of the first rod is exposed on the Outside the second member.

In another preferred embodiment, the first rod is a hollow tubular rod, the first rod is sleeved on the second rod and can slide on the second rod.

Further, the rear wheel bracket also includes a pedal installed outside the second rod, the pedal is fixedly connected with the first rod, and the pedal can move up and down outside the second rod, when the pedal moves downward , the first rod slides and shrinks toward the second rod, and the length of the rear wheel bracket is shortened; when the pedal moves upward, the first rod slides and protrudes outward from the second rod, and the rear wheel bracket The length is stretched.

Further, the elastic device is installed in the second rod, and the lower part of the first rod is connected with the elastic device. When the frame is unfolded, the energy of the elastic device releases the first rod Pushing out to the second bar makes the rear wheel support stretch, and the vehicle frame is fully or partially unfolded automatically.

Preferably, the elastic device is an air spring, which presses down on the pedal, and the first rod slides into the second rod to compress the air spring to store energy. When the pedal is released, the air spring resets and pushes the first The rod protrudes outward from the second rod.

Specifically, the upper part of the front wheel bracket and the lower part of the push rod are pivotally connected, and the connection between the first rod and the push rod is located above the connection between the front wheel bracket and the push rod. In the unfolded state, the push rod stands upright along the extending direction of the front wheel bracket.

Further, the front part of the cushion bar is pivotally connected to the front wheel bracket, the rear part of the seat cushion bar is pivotally connected to the second rod, and the connection between the seat cushion bar and the front wheel bracket is low. At the junction of the push rod and the front wheel bracket.

Still further, the front part of the swing rod is pivotally connected to the push rod, the rear part of the swing rod is pivotally connected to the second rod, and the connection between the swing rod and the push rod is located at the first Between a joint between a rod and a push rod and a joint between a front wheel bracket and a push rod.

The orientation words such as front, rear, left, right, up, and down mentioned above are defined in the normal use orientation of the stroller.

The scope of the present invention is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: the length of the rear wheel bracket of the children's stroller can be adjusted, and the folding and unfolding of the children's stroller can be realized by adjusting the length of the rear wheel bracket, and the adjustment method is simple and convenient And unique; through the setting of the pedal, the user can press the pedal to adjust the length of the rear wheel bracket and then realize the folding of the stroller. The folding method is novel and easy to use; through the setting of the elastic device, the rear wheel bracket can be automatically retracted from The state returns to the stretched state so that the stroller can automatically return from the folded state to the unfolded state in the unlocked state, and the unfolding process is easy and labor-saving; the folded front wheel assembly and the rear wheel assembly are side by side so that the folded stroller can Stands on the ground for easy storage.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the children's stroller in the unfolded state of the present invention;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is a three-dimensional structural schematic diagram of the children's stroller in a half-folded state of the present invention;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is a three-dimensional structural schematic diagram of the children's stroller in a folded state according to the present invention;

Fig. 6 is the right view of Fig. 5;

Among them: 1. Front wheel assembly; 2. Rear wheel assembly; 3. Front wheel support; 4. Rear wheel support; 5. Cushion rod; 6. Push rod; The second bar; 10, the pedal; 11, the elastic device.

detailed description

As shown in Figures 1 to 6, a children's stroller according to the present invention includes a vehicle frame with an expanded state and a folded state, a front wheel assembly 1, a rear wheel assembly 2, and a vehicle frame that is locked in the expanded state and the folded state. state locking device (not shown). The vehicle frame includes a front wheel bracket 3 whose bottom is connected to the front wheel assembly 1 , a rear wheel bracket 4 whose bottom is connected to the rear wheel assembly 2 , a seat bar 5 , a push rod 6 and a swing bar 7 .

The upper part of the front wheel bracket 3 is connected with the lower part of the push rod 6 through a pivot. The push rod 6 is rotatably connected with the rear wheel bracket 4 through a pivot. The cushion bar 5 is rotatably connected with the front wheel bracket 3 and the rear wheel bracket 4 through a pivot respectively, and the swing bar 7 is rotatably connected with the push rod 6 and the rear wheel bracket 4 through a pivot respectively. The length of the rear wheel support 4 can be adjusted. The rear wheel bracket 4 is provided with an elastic device 11. When the vehicle frame is folded, the rear wheel bracket 4 contracts, and the elastic device 11 is compressed to store energy; when the vehicle frame is unfolded, the elastic The energy release of the device 11 makes the rear wheel support 4 elongate, and the vehicle frame is fully or partially deployed automatically. When the vehicle frame is in the unfolded state, the rear wheel bracket 4 stretches and expands to support the push rod 6, and the push rod 6 stands upright along the extension direction of the front wheel bracket 3; when the vehicle frame is in the folded state, the rear wheel The support 4 contracts, and the push rod 6 turns backwards around the front wheel support 3 under the drive of the rear wheel support 4, and the front wheel support 3, the swing bar 7 and the cushion rod 5 move toward the rear wheel under the drive of the push rod 6. The bracket 4 is close to being folded, and the front wheel assembly 1 and the rear wheel assembly 2 are drawn side by side to support the stroller on the ground.

The rear wheel bracket 4 includes a first rod 8 , a second rod 9 and a pedal 10 arranged outside the second rod 9 . The upper part of the first rod 8 is pivotally connected with the push rod 6 , and the lower part of the second rod 9 is connected with the rear wheel assembly 2 . The first rod 8 is slidably connected to the second rod 9, the first rod 8 and the second rod 9 are arranged on the same straight line, and the first rod 8 can move along the direction of the second rod 9 Slide lengthwise. In this embodiment, the second rod 9 is a hollow tubular rod, the first rod 8 is passed through the second rod 9 and can slide in the second rod 9, the first The upper part of the rod 8 is exposed outside the second rod 9 . The pedal 10 is fixedly connected with the first rod 8 . Specifically, the second rod 9 is provided with a chute penetrating through the wall of the second rod 9 , and the first rod 8 and the pedal 10 are riveted by the rivets penetrating in the chute. The pedal 10 can move up and down outside the second rod 9 . When the pedal 10 moves downward, the first rod 8 slides and contracts in the second rod 9, and the length of the rear wheel bracket 4 is shortened; when the pedal 10 moves upward, the first rod 8 moves toward the second rod. Part 9 slides out, and the length of the rear wheel support 4 is elongated.

The elastic device 11 is arranged in the second rod 9, and the lower part of the first rod 8 is connected with the elastic device 11. When the vehicle frame is unfolded, the energy of the elastic device 11 releases the first rod. Part 8 pushes out to the second bar 9 to make the rear wheel support 4 elongate, and the vehicle frame is fully or partially deployed automatically.

In this embodiment, the elastic device 11 is an air spring, which presses down on the pedal 10, and the first rod 8 slides into the second rod 9 to compress the air spring to store energy, and release the pedal 10. The air spring returns and pushes the first rod 8 to protrude outward from the second rod 9 .

The connection between the first rod 8 and the push rod 6 is located above the connection between the front wheel bracket 3 and the push rod 6 . The front portion of the cushion bar 5 is pivotally connected to the front wheel bracket 3, and the rear portion of the seat cushion bar 5 is pivotally connected to the second bar member 9. The joint is lower than the joint between the push rod 6 and the front wheel bracket 3 . The front portion of the swing link 7 is pivotally connected to the push rod 6, and the rear portion of the swing link 7 is pivotally connected to the second bar member 9. The junction of the swing link 7 and the push bar 6 It is located between the connection between the first rod 8 and the push rod 6 and the connection between the front wheel bracket 3 and the push rod 6 .

In the present invention, the locking device that locks the vehicle frame in the unfolded state is the first locking device, and the locking device that locks the vehicle frame in the folded state is the second locking device. When folding the stroller in the unfolded state, the first locking device is first unlocked, and the foot pedal 10 moves downward, driving the first rod 8 to shrink back into the second rod 9, the air spring is compressed, and the push rod 6 turn backwards, the front wheel bracket 3, the seat rod 5 and the swing rod 7 are drawn towards the rear wheel bracket 4 under the drive of the push rod 6, and the front wheel assembly 1 and the rear wheel assembly 2 are moved side by side and move the child's stroller Stand on the ground. The second locking device is locked, and the entire folding process is completed so far.

When the folded stroller is unfolded, the second locking device is unlocked, the first rod 8 protrudes out of the second rod 9 under the action of the air spring, and the first rod 8 drives the push rod 6 forward Turn over and unfold, and simultaneously the front wheel bracket 3, the seat rod 5 and the swing rod 7 are unfolded under the drive of the push rod 6, and finally the first locking device is locked, so far the whole unfolding process is completed.

It can be seen from the above that the folding of the stroller can be easily realized by stepping on the pedal 10, and the folding method is novel and the steps are simple. The unfolding process can be automatically unfolded by the air spring, which is labor-saving and convenient.

The present invention can also change the first rod 8 and the second rod 9 on the basis of the above embodiments, specifically, the first rod 8 is set as a hollow tubular rod, while the first The rod 8 is sleeved on the second rod 9 and can slide on the second rod 9 . This way can also realize the functions of the structure of the stroller as described in the above embodiments.

As mentioned above, we have fully described according to the purpose of the present invention, but the present invention is not limited to the above-mentioned embodiments and implementation methods. Practitioners in the relevant technical fields may make various changes and implementations within the scope permitted by the technical ideas of the present invention.

Claims (10)

1. A stroller for children, comprising a frame with an unfolded state and a folded state, a front wheel assembly (1), a rear wheel assembly (2) and a locking device for locking the frame in the unfolded state and the folded state, the cart The frame includes a front wheel bracket (3) whose bottom is connected to the front wheel assembly (1), a rear wheel bracket (4) whose bottom is connected to the rear wheel assembly (2), a seat bar (5) and a push rod (6 ), characterized in that: the rear wheel bracket (4) includes a first rod (8) and a second rod (9), the upper part of the first rod (8) is connected with the push rod (6) through the pivot ) is rotationally connected, the lower part of the second rod (9) is connected to the rear wheel assembly (2), the first rod (8) is slidingly connected to the second rod (9), and the first rod (8) It can slide along the length direction of the second rod (9), the front wheel bracket (3) is pivotally connected with the push rod (6) through the pivot, and the seat rod (5) is respectively connected with the front wheel through the pivot The wheel bracket (3) and the rear wheel bracket (4) are rotationally connected, and the vehicle frame also includes a swing link (7), and the swing link (7) is respectively connected to the push rod (6) and the rear wheel bracket (4) through a pivot shaft. ) rotation connection, the length of the rear wheel bracket (4) can be adjusted, the rear wheel bracket (4) is provided with an elastic device (11), and the rear wheel bracket (4) also includes a connection with the first rod ( 8) The fixedly connected pedal (10), when the frame is folded, the rear wheel support (4) shrinks by stepping on the pedal (10), and the elastic device (11) is compressed to store energy; when the When the vehicle frame is unfolded, the energy of the elastic device (11) is released to make the rear wheel support (4) stretch, and the vehicle frame is fully unfolded automatically. 2. The stroller for children according to claim 1, characterized in that: the first rod (8) and the second rod (9) are arranged on the same straight line. 3. The stroller according to claim 2, characterized in that: the second rod (9) is a hollow tubular rod, and the first rod (8) passes through the second rod ( 9) and can slide in the second rod (9), the upper part of the first rod (8) is exposed outside the second rod (9). 4. The stroller according to claim 2, characterized in that: the first rod (8) is a hollow tubular rod, and the first rod (8) is sleeved on the second rod ( 9) and can slide on the second rod (9). 5. The stroller according to claim 3, characterized in that: the pedal (10) is installed outside the second rod (9), and the pedal (10) can be mounted on the second rod (9) ) externally moves up and down, when the pedal (10) moves downward, the first rod (8) slides and shrinks into the second rod (9), and the length of the rear wheel bracket (4) shortens; when the pedal (10 ) moves upward, the first rod (8) slides out to the outside of the second rod (9), and the length of the rear wheel support (4) is elongated. 6. The stroller according to claim 5, characterized in that: the elastic device (11) is installed in the second rod (9), and the lower part of the first rod (8) is in contact with the The elastic device (11) is connected. When the frame is unfolded, the energy of the elastic device (11) is released to push the first rod (8) outward to the second rod (9) so that the rear wheel bracket (4) stretches Long, the frame is fully or partially unfolded automatically. 7. The stroller according to claim 6, characterized in that: the elastic device (11) is an air spring, which presses down on the pedal (10), and the first rod (8) pushes toward the second Sliding inside the rod (9) causes the air spring to compress and store energy, and the pedal (10) is released, and the air spring resets to push the first rod (8) out to the second rod (9). 8. The stroller according to claim 3, characterized in that: the upper part of the front wheel bracket (3) is pivotally connected to the lower part of the push rod (6), and the first rod (8) The connection with the push rod (6) is located above the connection between the front wheel bracket (3) and the push rod (6). When the frame is in the unfolded state, the push rod (6) will Brace in the direction of extension. 9. The stroller according to claim 8, characterized in that: the front part of the cushion bar (5) is pivotally connected to the front wheel bracket (3), and the rear part of the seat cushion bar (5) It is pivotally connected with the second rod (9), and the connection between the seat rod (5) and the front wheel bracket (3) is lower than the connection between the push rod (6) and the front wheel bracket (3) . 10. The stroller according to claim 9, characterized in that: the front part of the swing link (7) is pivotally connected to the push rod (6), and the rear part of the swing link (7) is connected to The second rod (9) is pivotally connected, and the connection between the swing rod (7) and the push rod (6) is located at the connection between the first rod (8) and the push rod (6) and the front wheel bracket (3) between the connection with the push rod (6).