CN108839703B - Folding baby carriage - Google Patents

Abstract

The invention discloses a folding children's stroller. The frame includes a chassis, a bottom rod assembly with a central axis arranged along the front and rear direction and pivotally connected to the chassis, wheels respectively connected to the front and rear ends of the bottom rod assembly, and a push rod and a push rod. A folding bracket assembly is foldable between the chassis. A wheel opening mechanism is provided between the folding bracket assembly and the bottom rod assembly. When the folding bracket assembly transitions from a folded state to an open state, the wheel opening mechanism drives the bottom rod assembly. The rotation causes the wheels to open relative to the chassis. When the folding bracket assembly is in an open state, the wheel opening mechanism keeps the wheels in an open position relative to the chassis; a wheel folding mechanism is provided between the folding bracket assembly or the chassis and the bottom rod assembly. During the transition of the bracket assembly from the open state to the folded state, the wheel folding mechanism drives the bottom rod assembly to rotate so that the wheels move closer to the chassis. This foldable children's stroller can be opened or folded with only one operation, which is very simple and fast.

Description

Folding stroller

Technical field

The invention relates to a folding children's stroller.

Background technique

Folding strollers are a very convenient means of transportation for children. It is easy to fold, small in size and easy to store after folding, which is what consumers need for folding strollers. Folding strollers in the prior art generally include a foldable frame, wheels installed below the frame, a locking device capable of locking the frame in an open state, and a baby seat mounted on the frame. Riding seat. In order to make the folded volume smaller, the wheels of some folding strollers can participate in the folding. When folded, the wheels fold inward, making the entire vehicle flatter after folding. However, the existing wheels can participate in folding strollers. The folding and opening of the wheels require a separate step. Therefore, the folding and opening operations of the entire vehicle require at least two steps to complete, which is not simple and fast enough. .

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a folding children's stroller.

In order to achieve the above object, the technical solution adopted by the present invention is: a folding children's stroller, which includes a frame with at least two working states and a locking mechanism for locking the frame in a first working state. The frame includes a push rod, a chassis, a bottom rod assembly with a central axis extending in the front and rear direction and rotatably arranged on the chassis, wheels respectively connected to the front and rear ends of the bottom rod assembly, connected between the push rod and the chassis and having an open state and The folding bracket assembly in the folded state. When the frame is in the first working state, the folding bracket assembly is in the open state, the push rod is away from the chassis, and the bottom rod assembly rotates relative to the chassis to open the wheels relative to the chassis. When the frame is in the second working state, the folding bracket assembly is in the folded state. In the state, the folding bracket assembly is in the folded state, and the push rod and folding bracket assembly are close to the chassis, and the bottom rod assembly rotates relative to the chassis to bring the wheels closer to the chassis;

A wheel opening mechanism is provided between the folding bracket assembly and the bottom rod assembly. During the transition of the folding bracket assembly from the folded state to the open state, the wheel opening mechanism drives the bottom rod assembly to rotate so that the wheels open relative to the chassis. When the folding bracket assembly When the assembly is in the open state, the wheel opening mechanism keeps the wheels in an open position relative to the chassis; a wheel folding mechanism is provided between the folding bracket assembly or the chassis and the bottom rod assembly. When the folding bracket assembly transitions from the open state to the folded state During the process, the wheel folding mechanism drives the bottom rod assembly to rotate so that the wheels move closer to the chassis.

Further, the folding bracket assembly includes a driving rod whose lower part is rotatably connected to the chassis, and the wheel opening mechanism includes a driving surface that is disposed on the bottom rod assembly and is in slidable contact with the driving rod and is detachable. When the folding bracket assembly is in In the folded state, the driving rod is separated from the driving surface. When the folding bracket assembly transitions from the folded state to the open state, the driving rod and the driving surface are in sliding contact. When the folding bracket assembly is in the open state, the driving rod Close to the drive surface.

Furthermore, the lower part of the drive rod is rotationally connected to the rear part of the chassis, and the driving surface is provided at the rear part of the bottom rod assembly. The driving surface includes an inclined plane that is in sliding contact with the driving rod and is detachable, and is connected to the inclined plane. and a resisting surface that detachably abuts the driving rod. When the folding bracket assembly is in the folded state, the driving rod is separated from the inclined surface and the resisting surface. When the folding bracket assembly transitions from the folded state to the open state, the driving rod It is separated from the resisting surface and slidably contacted with the inclined surface. When the folding bracket assembly is in the open state, the driving rod is separated from the inclined surface and tightly pressed against the resisting surface.

Furthermore, the lower part of the driving rod is rotatably connected to the front part of the chassis, the driving surface is provided on the front part of the bottom rod assembly, and the driving surface is a cylindrical surface.

Further, the wheel folding mechanism is disposed between the chassis and the bottom bar assembly. The wheel folding mechanism includes a torsion spring disposed between the chassis and the bottom bar assembly. The torsion spring exerts force on the bottom bar assembly to rotate and bring the wheels closer to the chassis. .

Further, the folding support assembly includes a lowering sleeve slidably connected to the chassis forward and backward, a front support rod whose lower part is rotationally connected to the lowering sleeve and whose upper part is rotationally connected to the lower part of the push rod.

Furthermore, the folding bracket assembly also includes a driving rod whose lower part is rotationally connected to the rear part of the chassis, a connecting rod whose upper part is rotationally connected to the push rod, and whose lower part is rotationally connected to the upper part of the driving rod. The connecting rod is rotationally connected to the connecting rod. The upper sliding sleeve is slidingly connected to the upper sliding sleeve, and the rear part is rotatably connected to the front support rod. The driving rod is rotationally connected to the front support rod.

Furthermore, the wheel folding mechanism is provided between the folding bracket assembly and the bottom rod assembly. The wheel folding mechanism includes a pair of spiral inclined planes respectively provided on the lower sleeve and the bottom rod assembly. The connection between the lower sleeve and the bottom rod assembly is through the The spiral slopes are in sliding and detachable contact. When the folding bracket assembly is in an open state, the lower sleeve is separated from the bottom rod assembly. When the folding bracket assembly transitions from the open state to the folded state, the lower sleeve is separated from the bottom rod assembly. The rod assemblies are in slidable contact with each other through the spiral slope, causing the bottom rod assembly to rotate and the wheels to move closer to the chassis.

Further, the bottom rod assembly includes a front rod, a rear rod whose front part is slidingly connected to the rear part of the front rod, and the rear rod is slidably and telescopically connected to the chassis. The front end of the front rod and the rear end of the rear rod are respectively connected to the wheels. When the frame is in the first working state, the rear bar slides backward and extends relative to the chassis; when the frame is in the second working state, the rear bar slides forward and retracts relative to the chassis.

Furthermore, the folding support assembly includes a rear support rod whose lower part is rotationally connected to the rear part of the chassis, an upper part which is rotationally connected to the rear support rod, and a lower part which is rotationally connected to the rear rod.

Furthermore, the folding support assembly also includes a driving rod whose upper part is rotationally connected to the lower part of the push rod and whose lower part is rotationally connected to the front part of the chassis. The lower part is rotationally connected to the upper part of the rear support rod and whose upper part is rotated with the push rod. The connected connecting rod and the upper sliding sleeve are slidingly connected to the back support rod, and the driving rod is rotationally connected to the upper sliding sleeve.

Further, the bottom rod assembly is installed in the chassis, and the front and rear ends of the bottom rod assembly extend out of the chassis and are connected to the wheels.

Further, the folding support assembly includes a drive rod whose lower part is rotationally connected to the rear part of the chassis, a front support rod whose lower part is rotationally connected to the front part of the chassis, and whose upper part is rotationally connected to the lower part of the push rod, and whose upper part is connected to the push rod. The connecting rod is rotatably connected and its lower part is rotatably connected to the upper part of the driving rod, and the upper sliding sleeve is slidingly connected to the driving rod. The front support rod is rotatably connected to the upper sliding sleeve.

Further, the folding support assembly includes a drive rod whose lower part is rotationally connected to the rear part of the chassis, a front support rod whose lower part is rotationally connected to the front part of the chassis, and whose upper part is rotationally connected to the lower part of the push rod, and whose upper part is connected to the push rod. The connecting rod is rotatably connected and its lower part is rotatably connected to the upper part of the driving rod, and the upper sliding sleeve is slidingly connected to the front support rod. The driving rod is rotatably connected to the upper sliding sleeve.

Further, the folding support assembly includes a drive rod whose lower part is rotationally connected to the rear part of the chassis, a front support rod whose lower part is rotationally connected to the front part of the chassis, and whose upper part is rotationally connected to the lower part of the push rod, and whose upper part is connected to the push rod. The connecting rod is rotatably connected, the upper part is rotatably connected to the lower part of the connecting rod, and the lower part is rotatably connected to the upper part of the driving rod. The front support rod is rotatably connected to the auxiliary driving rod.

By adopting the above technical solution, the foldable children's stroller of the present invention, when the frame is opened and folded, under the action of the wheel opening mechanism and the wheel folding mechanism, the wheels can be opened and folded together with the frame, and there is no need to separate them separately. A separate operating step for opening or folding the wheels. Therefore, it only takes one operation to open or fold the entire vehicle, which is very simple and fast. The frame structure of this folding children's stroller cooperates with the wheel opening mechanism and the wheel folding mechanism, making the whole vehicle simple and compact in structure, easy to operate, flat and very small in volume after folding.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of the foldable children's stroller when opened in Embodiment 1 of the present invention;

2 is a schematic structural diagram of the bottom rod assembly of the folding stroller in Embodiment 1 of the present invention;

Figure 3 is a side structural schematic diagram of the folding stroller when opened in Embodiment 1 of the present invention;

Figure 4 is a schematic three-dimensional structural diagram of the folding stroller during the folding process in Embodiment 1 of the present invention;

Figure 5 is a side structural schematic diagram of the folding stroller during the folding process in Embodiment 1 of the present invention;

Figure 6 is a schematic three-dimensional structural diagram of the foldable children's stroller when folded in Embodiment 1 of the present invention;

Figure 7 is a schematic side view of the structure of the foldable stroller when folded in Embodiment 1 of the present invention;

Figure 8 is a schematic structural diagram of the wheel opening mechanism of the foldable stroller in Embodiment 1 of the present invention. At this time, the foldable stroller is folded;

Figure 9 is a schematic structural diagram of the wheel opening mechanism of the folding stroller in Embodiment 1 of the present invention. At this time, the folding stroller is being opened;

Figure 10 is a schematic structural diagram of the wheel opening mechanism of the folding stroller in Embodiment 1 of the present invention. At this time, the folding stroller is opened;

Figure 11 is a schematic structural diagram of the wheel folding mechanism of the foldable stroller in Embodiment 1 of the present invention;

Figure 12 is a schematic structural diagram of the wheel folding mechanism of the foldable stroller in Embodiment 2 of the present invention. At this time, the foldable stroller is being folded;

Figure 13 is a schematic structural diagram of the wheel folding mechanism of the folding stroller in Embodiment 2 of the present invention. At this time, the folding stroller is folded;

Figure 14 is a schematic side structural view of the folding stroller during the folding process in Embodiment 3 of the present invention;

Figure 15 is a schematic side view of the folding stroller during the folding process in Embodiment 4 of the present invention;

Figure 16 is a schematic side structural view of the folding stroller during the folding process in Embodiment 5 of the present invention;

Figure 17 is a schematic three-dimensional structural diagram of the foldable children's stroller when opened in Embodiment 6 of the present invention;

Figure 18 is a schematic side view of the structure of the folding stroller when opened in Embodiment 6 of the present invention.

Figure 19 is a schematic side structural view of the folding stroller during the folding process in Embodiment 6 of the present invention;

Figure 20 is a structural schematic diagram of the wheel opening mechanism of the foldable stroller in Embodiment 6 of the present invention. At this time, the foldable stroller is folded;

Figure 21 is a schematic structural diagram of the wheel opening mechanism of the folding stroller in Embodiment 6 of the present invention. At this time, the folding stroller is being opened;

Figure 22 is a schematic structural diagram of the wheel opening mechanism of the folding stroller in Embodiment 6 of the present invention. At this time, the folding stroller is opened;

Figure 23 is a schematic cross-sectional structural view of the chassis and bottom rod assembly of the folding stroller in Embodiment 6 of the present invention.

The numbers in the picture are:

1. Push rod; 2. Front support; 201. Bump; 202. Supporting surface; 3. Connecting rod; 4. Seat post; 5. Upper sliding sleeve; 6. Rear support; 7. Lower sleeve; 8. Chassis; 9. Bottom rod assembly; 901, front rod; 902, rear rod; 10, wheel; 11, pivot point; 12, slope; 13, resisting surface; 14, torsion spring; 15, spiral slope; 16, folding brace Frame assembly; 17. Auxiliary rear support rod; 18. Cylindrical surface; 19. Rear connecting rod; 20. Guide groove.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

Embodiment 1

Referring to Figures 1 to 11, the folding stroller in this embodiment includes a frame with at least two working states, a locking mechanism for locking the frame in a first working state, and a locking mechanism connected to the frame. Seat pocket.

The vehicle frame includes a push rod 1, a chassis 8, a bottom rod assembly 9 with a central axis arranged along the front and rear directions and pivotally connected to the chassis 8, wheels 10 respectively connected to the front and rear ends of the bottom rod assembly 9, and a push rod 1 and the chassis connected to the chassis 8. The foldable folding bracket assembly 16 between 8, when the frame is in the first working state (that is, when the folding stroller is fully opened), the folding bracket assembly 16 is in the open state, and the folding bracket assembly 16 is held up Move the push rod 1 away from the chassis 8, and the bottom rod assembly 9 rotates relative to the chassis 8 so that the wheels 10 open relative to the chassis 8 and the rotation axis of the wheels 10 is parallel to the ground. When the frame is in the second working state (i.e., the folded stroller is completely When folding), the folding bracket assembly 16 is in a folded state, and the folding bracket assembly 16 retracts toward the chassis 8 and drives the push rod 1 to retract toward the chassis, and in this state, the push rod 1 and the folding bracket assembly 16 are in contact with the chassis 8 To move closer, the bottom rod assembly 9 rotates relative to the chassis 8 so that the wheel 10 moves closer to the chassis 8 and the rotation axis of the wheel 10 is perpendicular to the ground.

As shown in FIGS. 1 and 2 , the bottom rod assembly 9 is a rigid rod that is installed in the chassis 8 , and the front and rear ends of the bottom rod assembly 9 extend out of the chassis 8 and are rigidly connected to the wheels 10 .

The folding support assembly 16 includes a lower part of a driving rod that is rotationally connected to the chassis 8. In this embodiment, the chassis 8 and the driving rod are rotationally connected through a pivot point 11. A wheel opening mechanism is provided between the driving rod and the bottom rod assembly 9. During the transition of the folding bracket assembly 16 from the folded state to the open state, the wheel opening mechanism drives the bottom rod assembly 9 to rotate to cause the wheels 10 to flip outward relative to the chassis 8. Open, when the folding bracket assembly 16 is in an open state, the wheel opening mechanism keeps the wheel 10 in an open position relative to the chassis 8; a wheel folding mechanism is provided between the folding bracket assembly 16 or the chassis 8 and the bottom rod assembly 9, During the transition of the folding bracket assembly 16 from the open state to the folded state, the wheel folding mechanism drives the bottom rod assembly 9 to rotate so that the wheels 10 turn inward and move closer to the chassis 8 .

The above-mentioned folding bracket assembly 16 includes a drive rod whose lower part is rotatably connected to the chassis 8. The wheel opening mechanism includes a driving surface that is disposed on the bottom rod assembly 9 and is in slidable contact with the driving rod and is detachable. When the bracket is folded, When the assembly 16 is in the folded state, the driving rod is separated from the driving surface. When the folding bracket assembly 16 transitions from the folded state to the open state, the driving rod and the driving surface are in sliding contact. When the folding bracket assembly 16 is in the open state, the driving rod is in sliding contact with the driving surface. In this state, the driving rod is in tight contact with the driving surface.

In this embodiment as shown in Figure 1 and Figures 8 to 10, the wheel opening mechanism is arranged close to the rear wheel. The driving rod mentioned above is the rear support rod 6, and the lower part of the rear support rod 6 is in contact with the chassis 8 The rear part is rotatably connected, as shown at A in Figure 1, the above-mentioned driving surface is provided at the rear part of the bottom rod assembly 9. The inclined surface 12 is in sliding contact and can be detached, and the resisting surface 13 is connected to the inclined surface 12 and detachably abuts the rear support bar 6. When the folding support bracket assembly 16 is in the folded state, the rear support bar 6 and the inclined surface 12 , the resisting surface 13 are all detached. When the folding bracket assembly 16 transitions from the folded state to the open state, the rear support rod 6 is detached from the resisting surface 13 and is in sliding contact with the inclined surface 12. When the folding bracket assembly 16 When in the open state, the rear support rod 6 is separated from the inclined surface 12 and pressed against the resisting surface 13 .

In this embodiment, as shown in Figures 4 and 11, the wheel folding mechanism is arranged between the chassis 8 and the bottom rod assembly 9, and close to the front wheel, as shown at B in Figure 4, the wheel folding mechanism It includes a torsion spring 14 disposed between the chassis 8 and the bottom rod assembly 9. The torsion spring 14 exerts force on the bottom rod assembly 9 to rotate and move the wheels 10 closer to the chassis 8.

As shown in Figures 1 to 7, the folding bracket assembly 16 in this embodiment also includes a lowering sleeve 7 that is slidably connected to the chassis 8 forward and backward. The lower part is rotationally connected to the lowering sleeve 7 and the upper part is connected to the push rod 1. The front strut 2 is rotatably connected to the lower part, the connecting rod 3 is rotatably connected to the push rod 1 and the lower part is rotatably connected to the upper part of the rear strut 6, the upper sliding sleeve 5 is rotatably connected to the connecting rod 3, and the upper sliding sleeve 5 is rotatably connected to the connecting rod 3. The sliding sleeve 5-phase sliding connection and the rear part of the seat post 4 are rotationally connected to the front stay 2, the rear stay 6 is rotationally connected to the front stay 2, the push rod 1, the connecting rod 3, the back stay 6 and the front stay The rod 2 constitutes a four-bar linkage mechanism, and the front strut 2, the rear strut 6, the chassis 8 and the lower sleeve 7 constitute a crank-slider mechanism.

working principle:

① When folding the stroller, the push rod 1 rotates forward and downward, driving the front support rod 2 and the connecting rod 3 to rotate downward. The upper sliding sleeve 5 rotates on the connecting rod 3 and slides backward along the seat rod 4. The back support The rod 6 (i.e., the driving rod) and the seat rod 4 are driven by the front stay 2 and the connecting rod 3 to rotate and move closer to the chassis 8. The lower sleeve 7 rotates with the front stay 2 and slides forward along the chassis 8. Until all the rods are close to the chassis 8, the frame is completely folded. During the folding process of the frame, due to the rotation of the rear support bar 6, its bottom part is separated from the resisting surface 13 and the inclined surface 12 on the bottom bar assembly 9, and the force given by the resisting surface 13 and the inclined surface 12 is lost, so that the bottom bar The assembly 9 rotates relative to the chassis 8 under the action of the torsion spring 14, driving the wheels 10 to move closer to the chassis 8 until the folding of the entire vehicle is completed.

② When opening the stroller, the operation process is opposite to the above-mentioned folding operation process. Rotate push rod 1 upward and backward to drive the front support rod 2 and connecting rod 3 to rotate upward. The upper sliding sleeve 5 rotates and slides forward along the seat pole 4. , the rear support rod 6 and the seat pole 4 are driven by the front support rod 2 and the connecting rod 3 to rotate and open relative to the chassis 8, and the lower sleeve 7 rotates with the front support rod 2 and slides backward along the chassis 8 to all The bars are all relatively open and the frame is fully open. During the opening of the frame, due to the rotation of the rear stay 6, its bottom comes into contact with the slope 12 on the bottom bar assembly 9 and slides along the slope 12. Under the push of the rear stay 6, the bottom bar assembly 9 overcomes the The torsion spring 14 rotates due to the force of the torsion spring 14, driving the wheel 10 to open relative to the chassis 8. When the whole vehicle is opened, the bottom of the rear support rod 6 slides to the resisting surface 13 and is pressed against the resisting surface 13, so that the bottom rod assembly 9 and the wheel 10 remains in the current state and will not be folded due to the force of the torsion spring 14, thus completing the opening of the entire vehicle.

When the frame of this folding stroller is opened and folded, under the action of the wheel opening mechanism and the wheel folding mechanism, the wheels can be opened and folded together with the frame, and a separate operation step is no longer required. Opening or folding of wheels. Therefore, it only takes one operation to open or fold the entire vehicle, which is very simple and fast. The frame structure of this folding children's stroller cooperates with the wheel opening mechanism and the wheel folding mechanism, making the whole vehicle simple and compact in structure, easy to operate, flat and very small in volume after folding.

Embodiment 2

Referring to Figures 12 and 13, the folding stroller in this embodiment has the same structure as the frame and wheel opening mechanism in Embodiment 1, and the only difference lies in the structure of the wheel folding mechanism.

The wheel folding mechanism in this embodiment is provided between the folding bracket assembly 16 and the bottom rod assembly 9 . The wheel folding mechanism includes a pair of spiral slopes 15 respectively provided on the lower sleeve 7 and the bottom rod assembly 9. Preferably, the spiral slopes 15 on the bottom rod assembly 9 are provided at the front end of the bottom rod assembly 9. The lower sleeve 7 and the bottom rod assembly 9 are in slidable and detachable contact through the spiral slope 15. When the folding bracket assembly 16 is in the open state, the lowering sleeve 7 is separated from the bottom rod assembly 9. When the folding bracket assembly 16 is folded, During the transition of the assembly 16 from the open state to the folded state, the lower sleeve 7 and the bottom rod assembly 9 are in sliding contact through the spiral slope 15 and the bottom rod assembly 9 is rotated and the wheels 10 are moved closer to the chassis 8 .

working principle:

① When folding the stroller, the folding of the frame is the same as in Embodiment 1 and will not be described here. During the folding process of the frame, due to the rotation of the rear support rod 6 (i.e., the drive rod), its bottom is separated from the resisting surface 13 and the inclined surface 12 on the bottom rod assembly 9, and the lower sleeve 7 slides forward to cause the lower sleeve 7 to slide forward. It is in contact with the front of the bottom rod assembly 9 through the spiral slope 15. As the lower sleeve 7 continues to slide forward, under the action of the spiral slope 15, the bottom rod assembly 9 is pushed to rotate, driving the wheels 10 to move closer to the chassis 8. Until the entire vehicle is folded.

② When opening the cart, the opening of the frame is also the same as in the first embodiment. During the opening process of the cart, as the lower sleeve 7 slides backward, it is separated from the bottom rod assembly 9. At the same time, due to the rotation of the rear support rod 6, its bottom is in contact with the slope 12 on the bottom rod assembly 9 and moves along the slope. 12 slides, and the bottom rod assembly 9 is rotated under the push of the rear support rod 6, driving the wheel 10 to open relative to the chassis 8. When the whole vehicle is opened, the bottom of the rear support rod 6 slides to the resisting surface 13 and resists the resisting surface 13 Tighten, so that the bottom rod assembly 9 and the wheels 10 are kept in the current state, and the opening of the entire vehicle is completed.

Embodiment 3

Referring to FIG. 14 , the structure of the folding stroller in this embodiment is the same as that of the wheel opening mechanism and the wheel folding mechanism in Embodiment 1. The only difference lies in the structure of the folding bracket assembly 16 in the frame.

The folding support assembly 16 in this embodiment includes a rear support rod 6 (i.e., a driving rod) whose lower part is rotationally connected to the rear part of the chassis 8 , the lower part is rotationally connected to the front part of the chassis 8 , and the upper part is connected to the lower part of the push rod 1 The front support rod 2 is rotatably connected to the front support rod 2, the upper part is rotationally connected to the push rod 1 and the lower part is rotationally connected to the upper part of the rear support rod 6. The upper sliding sleeve 5 is slidingly connected to the rear support rod 6. The front support rod 2 is rotatably connected with the upper sliding sleeve 5. The push rod 1, the connecting rod 3, the front support rod 2, the rear support rod 6 and the upper sliding sleeve 5 form a crank slider mechanism. The front support rod 2, the rear support rod 6 and the chassis 8 and the upper sliding sleeve 5 form a crank slider mechanism.

working principle:

① When folding the stroller, the push rod 1 rotates forward and downward, driving the front support rod 2 and the connecting rod 3 to rotate downward, and the rear support rod 6 (i.e., the driving rod) is driven by the front support rod 2 and the connecting rod 3. Rotate and move closer to the chassis 8. While the upper sliding sleeve 5 rotates with the front stay 2, it slides downward along the rear stay 6 until all the rods are close to the chassis 8 and the frame is completely folded. The folding of the wheel 10 is the same as in Embodiment 1 and will not be described here.

② When opening the cart, the operation process is opposite to the above-mentioned folding operation process. Rotate the push rod 1 upward and backward to drive the front support rod 2 and the connecting rod 3 to rotate upward. The rear support rod 6 is between the front support rod 2 and the connecting rod 3. It is driven downward to rotate and open relative to the chassis 8. The upper sliding sleeve 5 rotates with the front support rod 2 and slides upward along the rear support rod 6 until all the rods are opened relative to the chassis 8 and the frame is fully opened. The opening of the wheel 10 is the same as in the first embodiment and will not be described here.

Embodiment 4

Referring to FIG. 15 , the structure of the folding stroller in this embodiment is the same as that of the wheel opening mechanism and the wheel folding mechanism in Embodiment 1. The only difference lies in the structure of the folding bracket assembly 16 in the frame.

The folding support assembly 16 in this embodiment includes a rear support rod 6 (i.e., a driving rod) whose lower part is rotationally connected to the rear part of the chassis 8 , the lower part is rotationally connected to the front part of the chassis 8 , and the upper part is connected to the lower part of the push rod 1 The front support rod 2 is rotatably connected to the push rod 1, and the connecting rod 3 is rotatably connected to the upper part of the rear support rod 6. The upper sliding sleeve 5 is slidingly connected to the front support rod 2, and the rear support rod is 6 is rotatably connected with the upper sliding sleeve 5. The push rod 1, the connecting rod 3, the front support rod 2, the rear support rod 6 and the upper sliding sleeve 5 form a crank slider mechanism. The front support rod 2, the rear support rod 6 and the chassis 8 and the upper sliding sleeve 5 form a crank slider mechanism.

working principle:

① When folding the stroller, the push rod 1 rotates forward and downward, driving the front support rod 2 and the connecting rod 3 to rotate downward, and the rear support rod 6 (i.e., the driving rod) is driven by the front support rod 2 and the connecting rod 3. Rotate and move closer to the chassis 8. While the upper sliding sleeve 5 rotates with the rear support rod 6, it slides downward along the front support rod 2 until all the rods are close to the chassis 8 and the frame is completely folded. The folding of the wheel 10 is the same as in Embodiment 1 and will not be described here.

② When opening the cart, the operation process is opposite to the above-mentioned folding operation process. Rotate the push rod 1 upward and backward to drive the front support rod 2 and the connecting rod 3 to rotate upward. The rear support rod 6 is between the front support rod 2 and the connecting rod 3. It is driven downward to rotate and open relative to the chassis 8. The upper sliding sleeve 5 rotates with the rear support rod 6 and slides upward along the front support rod 2 until all the rods are opened relative to the chassis 8 and the frame is fully opened. The opening of the wheel 10 is the same as in the first embodiment and will not be described here.

Embodiment 5

Referring to FIG. 16 , the structure of the folding stroller in this embodiment is the same as that of the wheel opening mechanism and the wheel folding mechanism in Embodiment 1. The only difference lies in the structure of the folding bracket assembly 16 in the frame.

The folding support assembly 16 in this embodiment includes a rear support rod 6 (i.e., a driving rod) whose lower part is rotationally connected to the rear part of the chassis 8 , the lower part is rotationally connected to the front part of the chassis 8 , and the upper part is connected to the lower part of the push rod 1 The front strut 2 is rotatably connected to each other, the connecting rod 3 whose upper part is rotatably connected to the push rod 1, and the auxiliary rear strut 17 whose upper part is rotatably connected to the lower part of the connecting rod 3 and whose lower part is rotatably connected to the upper part of the rear strut 6. , the front strut 2 is rotationally connected to the auxiliary rear strut 17, the push rod 1, the connecting rod 3, the auxiliary rear strut 17 and the front strut 2 form a four-bar linkage mechanism, the front strut 2, the auxiliary rear strut 17, The rear support rod 6 and the chassis 8 form a four-bar linkage.

working principle:

① When folding the stroller, the push rod 1 rotates forward and downward, driving the front support rod 2 and the connecting rod 3 to rotate downward, and the auxiliary rear support rod 17 is driven by the front support rod 2 and the connecting rod 3 to rotate toward the chassis. 8 moves closer, the rear support rod 6 (i.e., the driving rod) is driven by the auxiliary rear support rod 17 to rotate and move closer to the chassis 8, until all the rods are close to the chassis 8, and the frame is completely folded. The folding of the wheel 10 is the same as in Embodiment 1 and will not be described here.

② When opening the cart, the operation process is opposite to the above-mentioned folding operation process. Rotate the push rod 1 upward and backward to drive the front support rod 2 and the connecting rod 3 to rotate upward. The auxiliary rear support rod 17 is between the front support rod 2 and the connecting rod 3. The rear support rod 6 is driven by the auxiliary rear support rod 17 to rotate and open relative to the chassis 8 until all the rods are opened relative to the chassis 8 and the frame is fully opened. The opening of the wheel 10 is the same as in the first embodiment and will not be described here.

Embodiment 6

Referring to the accompanying drawings 17 to 23, compared with the first embodiment of the folding stroller in this embodiment, the wheel opening mechanism is arranged close to the front wheel. The driving rod mentioned above is the front support rod 2, and the front support rod 2 The lower part is rotatably connected to the front part of the chassis 8. As shown in Figure 17 at position C, the driving surface is provided at the front part of the bottom rod assembly 9, and the driving surface is a cylindrical surface 18. Specifically, the bottom of the front support rod 2 has a bump 201, and a support surface 202 is provided on the bump 201. When the folding bracket assembly 16 is in the folded state, the bump 201 is separated from the cylindrical surface 18. When the folding bracket assembly 16 is folded, During the transition of the frame assembly 16 from the folded state to the open state, the bump 201 is in sliding contact with the cylindrical surface 18. When the folding bracket assembly 16 is in the open state, the supporting surface 202 on the bump 201 is against the cylindrical surface. 18 on.

The folding stroller in this embodiment can fold in the up and down direction while also folding in the front and rear direction. Specifically, as shown in Figure 23, the bottom rod assembly 9 includes a front rod 901, a front part, and a rear part of the front rod 901. The rear rod 902 is slidingly connected to each other, and the rear rod 902 is slidably and telescopically connected to the chassis 8. The front end of the front rod 901 and the rear end of the rear rod 902 are respectively connected to the wheel 10. When the frame is in the first working state, the rear rod 902 slides backward and extends relative to the chassis 8. When the frame is in the second working state, the rear rod 902 slides forward and retracts relative to the chassis 8. The above-mentioned driving surface is provided at the front end of the front rod 901.

The folding brace assembly 16 includes a rear brace 6 whose lower part is rotatably connected to the rear part of the chassis 8, an upper sliding sleeve 5 which is slidably connected to the rear brace 6 and rotatably connected to the front brace 2, and an upper and rear brace. 6-phase rear connecting rod 19, the lower part of which is rotationally connected to the rear rod 902, the lower part of the connecting rod 3, which is rotationally connected to the upper part of the rear support rod 6, and the upper part of which is rotationally connected to the push rod 1, the upper part of the front support rod 2 It is rotatably connected with the lower part of push rod 1. Push rod 1, connecting rod 3, front support rod 2, rear support rod 6 and upper sliding sleeve 5 form a crank slider mechanism. Front support rod 2, rear support rod 6 and chassis 8 The upper sliding sleeve 5 and the upper sliding sleeve 5 form a crank slider mechanism, and the rear support rod 6, the rear connecting rod 19, the chassis 8 and the rear rod 902 form a crank slider mechanism. The chassis 8 is provided with a guide groove 20 arranged along the front and rear directions, as shown in Figure 17 . The lower part of the rear link 19 passes through the guide groove 20 and is connected to the rear rod 902 .

The wheel folding mechanism in this embodiment is the same as that in Embodiment 1.

working principle:

① When folding the stroller, the push rod 1 rotates forward and downward, driving the front support rod 2 (i.e., the driving rod) and the connecting rod 3 to rotate downward, and the rear support rod 6 is driven by the connecting rod 3 to rotate and move closer to the chassis 8 , the rear link 19 is driven by the rear support rod 6 to rotate and move closer to the chassis 8, until all the rods are close to the chassis 8, thereby realizing the folding of the frame in the up and down direction. During the rotation of the rear link 3, it drives the rear rod 902 in the bottom rod assembly 9 to slide forward and contract relative to the chassis 8, thereby realizing the folding of the frame in the front and rear direction. The folding of the wheel 10 is the same as in Embodiment 1 and will not be described here.

② When opening the cart, the operation process is opposite to the above-mentioned folding operation process. Rotate the push rod 1 upward and backward to drive the front support rod 2 and the connecting rod 3 to rotate upward. The rear support rod 6 is driven by the connecting rod 3 to rotate and face each other. The chassis 8 is opened, and the rear connecting rod 19 is rotated and opened relative to the chassis 8 driven by the rear support rod 6, until all the rods are relatively opened, thereby realizing the opening of the vehicle frame in the up and down direction. During the rotation of the rear link 19, it drives the rear rod 902 in the bottom rod assembly 9 to slide backward and extend relative to the chassis 8, thereby opening the vehicle frame in the front and rear direction. During the rotation of the front support rod 2 (i.e., the driving rod), the bump 201 at the bottom slides along the cylindrical surface 18, pushing the bottom rod assembly 9 (including the front rod 901 and the rear rod 902) to rotate, and driving the wheel 10 toward the chassis 8 Close together to complete the folding of wheel 10. And after the cart is fully opened, the bottom support surface 202 abuts against the cylindrical surface 18 to keep the bottom rod assembly 9 in its current state, thereby keeping the wheels 10 in an open state relative to the chassis 8 .

The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly. They cannot limit the scope of protection of the present invention. All equivalent changes or modifications made based on the spirit and essence of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A folding children's stroller, which includes a frame with at least two working states and a locking mechanism for locking the frame in a first working state, characterized in that: the frame includes a push rod (1 ), a chassis (8), a bottom rod assembly (9) extending in the front-rear direction and rotatably provided on the chassis (8), wheels (10) respectively connected to the front and rear ends of the bottom rod assembly (9), A folding bracket assembly (16) connected between the push rod (1) and the chassis (8) and having an open state and a folded state. When the frame is in the first working state, the folding bracket assembly (16) is in the open state, the push rod (1) is away from the chassis (8), and the bottom rod assembly (9) rotates relative to the chassis (8) to open the wheel (10) relative to the chassis (8). When the vehicle frame is in the second working state, the folding bracket assembly (16) is in a folded state, and the push rod (1) and the folding bracket assembly (16) are close to the chassis (8). The bottom rod assembly (9) rotates relative to the chassis (8) to bring the wheels (10) closer to the chassis (8); A wheel opening mechanism is provided between the folding bracket assembly (16) and the bottom rod assembly (9). During the transition of the folding bracket assembly (16) from the folded state to the open state, the wheel opens. The mechanism drives the bottom rod assembly (9) to rotate so that the wheel (10) opens relative to the chassis (8). When the folding bracket assembly (16) is in an open state, the wheel opening mechanism causes the wheel (10) to open relative to the chassis (8). 10) Keep it in an open position relative to the chassis (8); a wheel folding mechanism is provided between the folding bracket assembly (16) or the chassis (8) and the bottom rod assembly (9), and the folding bracket assembly (9) 16) During the transition from the open state to the folded state, the wheel folding mechanism drives the bottom rod assembly (9) to rotate so that the wheel (10) moves closer to the chassis (8), wherein the folding bracket The assembly (16) includes a drive rod whose lower part is rotatably connected to the chassis (8). The wheel opening mechanism includes a drive rod that is disposed on the bottom rod assembly (9) and is in slidable contact with the drive rod and can be disengaged. When the folding bracket assembly (16) is in the folded state, the driving rod is separated from the driving surface. When the folding bracket assembly (16) transitions from the folded state to the open state, , the driving rod is in sliding contact with the driving surface, and when the folding bracket assembly (16) is in an open state, the driving rod is in tight contact with the driving surface. 2. The folding children's stroller according to claim 1, characterized in that: the lower part of the driving rod is rotationally connected to the rear part of the chassis (8), and the driving surface is provided on the bottom rod assembly (9) ), the driving surface includes an inclined surface (12) that is in slidable contact with the driving rod and is detachable, and a resisting surface (13) that is connected to the inclined surface (12) and detachably abuts the driving rod. ), when the folding bracket assembly (16) is in the folded state, the driving rod is separated from the inclined surface (12) and the resisting surface (13). When the folding bracket assembly (16) is in the folded state, During the transition to the open state, the driving rod is separated from the resisting surface (13) and slidably contacts the inclined surface (12). When the folding bracket assembly (16) is in the open state , the driving rod breaks away from the inclined surface (12) and abuts against the resisting surface (13). 3. The folding stroller according to claim 1, characterized in that: the lower part of the driving rod is rotationally connected to the front part of the chassis (8), and the driving surface is provided on the bottom rod assembly (9) ), and the driving surface is a cylindrical surface (18). 4. The folding children's stroller according to claim 3, characterized in that: the lower part of the driving rod has a convex block (201), and a supporting surface (202) is provided on the convex block (201). When the folding bracket assembly (16) is in the folded state, the bump (201) is separated from the cylindrical surface (18). When the folding bracket assembly (16) transitions from the folded state to the open state, the The bump (201) is in sliding contact with the cylindrical surface (18). When the folding bracket assembly (16) is in an open state, the supporting surface (202) on the bump (201) abuts the cylinder. Face (18) above. 5. The folding children's stroller according to claim 1, characterized in that: the wheel folding mechanism is provided between the chassis (8) and the bottom rod assembly (9), and the wheel folding mechanism includes a wheel folding mechanism provided on the chassis (9). 8) The torsion spring (14) between the bottom rod assembly (9) and the torsion spring (14) exerts force on the bottom rod assembly (9) to rotate and bring the wheels (10) closer to the chassis (8) . 6. The folding stroller according to claim 1, characterized in that: the folding bracket assembly (16) includes a lowering sleeve (7) and a lower part slidably connected to the chassis (8) back and forth. The front strut (2) is rotatably connected to the lower sleeve (7) and the upper part is rotatably connected to the lower part of the push rod (1). 7. The foldable children's stroller according to claim 6, characterized in that: the wheel folding mechanism is provided between the folding bracket assembly (16) and the bottom rod assembly (9), and the wheel folding mechanism includes respectively A pair of spiral slopes (15) are provided on the lower sleeve (7) and the bottom rod assembly (9). The spiral slopes (15) can slide between the lower sleeve (7) and the bottom rod assembly (9). Detachably contact each other. When the folding bracket assembly (16) is in an open state, the lowering sleeve (7) is detached from the bottom rod assembly (9). When the folding bracket assembly (16) is in an open state, During the transition from the state to the folded state, the sliding sleeve (7) and the bottom rod assembly (9) are in slidable contact through the spiral slope (15), causing the bottom rod assembly (9) to rotate and causing the wheels (9) to rotate. 10) Move closer to the chassis (8). 8. The folding stroller according to claim 1, characterized in that: the bottom rod assembly (9) includes a front rod (901), and the front part is slidingly connected to the rear part of the front rod (901). The rear rod (902) is slidably and telescopically connected to the chassis (8). The front end of the front rod (901) and the rear end of the rear rod (902) are respectively connected to the wheel ( 10). When the frame is in the first working state, the rear rod (902) slides backward and extends relative to the chassis (8). When the frame is in the second working state, the rear rod (902) (902) slides forward and retracts relative to chassis (8). 9. The folding stroller according to claim 8, characterized in that: the folding support assembly (16) includes a rear support rod (6) with a lower part rotatably connected to the rear part of the chassis (8), an upper part The rear connecting rod (19) is rotatably connected to the rear support rod (6) and the lower part is rotatably connected to the rear rod (902). 10. The folding children's stroller according to claim 1, characterized in that: the bottom rod assembly (9) is installed in the chassis (8), and the front and rear ends of the bottom rod assembly (9) extend Remove the chassis (8). 11. The folding children's stroller according to claim 6, characterized in that: the folding bracket assembly (16) further includes a driving rod with a lower part rotatably connected to the rear part of the chassis (8), an upper part with the The push rod (1) is rotatably connected to the connecting rod (3) whose lower part is rotatably connected to the upper part of the driving rod, the upper sliding sleeve (5) rotatably connected to the connecting rod (3), and the upper sliding sleeve (5). The sliding sleeve (5) is slidably connected to the seat post (4), and the rear portion is rotatably connected to the front stay (2). The drive rod is rotatably connected to the front stay (2). 12. The folding children's stroller according to claim 1, characterized in that: the folding support assembly (16) includes a driving rod with a lower part rotatably connected to the rear part of the chassis (8), and a lower part connected with the chassis (8). The front support rod (2) of (8) is rotatably connected to the front part and the upper part is rotatably connected to the lower part of the push rod (1). The upper part is rotatably connected to the push rod (1) and the lower part is rotatably connected to the drive rod (1). The connecting rod (3) is rotatably connected to the upper part of the rod, and the upper sliding sleeve (5) is slidingly connected to the driving rod. The front support rod (2) is rotatably connected to the upper sliding sleeve (5). 13. The folding children's stroller according to claim 1, characterized in that: the folding support assembly (16) includes a driving rod with a lower part rotatably connected to the rear part of the chassis (8), and a lower part connected with the chassis (8). The front support rod (2) of (8) is rotatably connected to the front part and the upper part is rotatably connected to the lower part of the push rod (1). The upper part is rotatably connected to the push rod (1) and the lower part is rotatably connected to the drive rod (1). The connecting rod (3) is rotatably connected to the upper part of the rod, and the upper sliding sleeve (5) is slidingly connected to the front support rod (2). The driving rod is rotatably connected to the upper sliding sleeve (5). 14. The folding children's stroller according to claim 1, characterized in that: the folding support assembly (16) includes a driving rod with a lower part rotatably connected to the rear part of the chassis (8), and a lower part connected with the chassis (8). The front support rod (2) is rotatably connected to the front part of (8) and the upper part is rotatably connected to the lower part of the push rod (1), and the connecting rod (3) is rotatably connected to the push rod (1). , the auxiliary driving rod (17) whose upper part is rotationally connected to the lower part of the connecting rod (3) and whose lower part is rotationally connected to the upper part of the driving rod, the front support rod (2) and the auxiliary driving rod (17) Phase rotation connection. 15. The folding stroller according to claim 9, characterized in that: the folding bracket assembly (16) further includes an upper part rotatably connected to the lower part of the push rod (1) and a lower part connected to the chassis. The front part of (8) is rotatably connected to the driving rod, the lower part is rotatably connected to the upper part of the back support rod (6), and the upper part is rotatably connected to the push rod (1) (3), and the sliding connection The upper sliding sleeve (5) on the back support rod (6) is rotatably connected to the upper sliding sleeve (5).