CN112678061B - a children's stroller - Google Patents

Abstract

The invention discloses a children's stroller. The children's stroller includes a push handle rod, a lower support, an upper support and a central shaft. The lower part of the lower support is provided with a wheel assembly; the upper support includes an upper connecting piece and a seat, and the lower end of the push handle rod The first shaft is rotatably connected with the upper connecting piece, the axis line of the first shaft extends along the left and right directions of the stroller, the axis line of the central axis extends along the height direction of the stroller, and the upper bracket is connected to the lower bracket through the central axis. The bracket is rotatably connected. The lower bracket includes a front wheel bracket, a rear wheel bracket and a lower connecting piece. The upper end of the front wheel bracket is rotatably connected to the upper end of the rear wheel bracket through a rotating shaft. The front wheel bracket and the rear wheel bracket are on the periphery of the rotation shaft. A rotating connecting part is formed, and the outermost side is provided with a shielding cover for shielding the rotating connecting part, and the axis line of the first axis and the axis line of the second axis pass through the shielding cover; the stroller provided by the present invention has a smaller volume. , more beautiful, in the push or rotation of the stroller, the whole car body is stable and balanced.

Description

a children's stroller

technical field

The invention relates to the technical field of children's products, in particular to a children's stroller.

Background technique

The stroller in the prior art has a forward push state in which the child turns away from the pusher and a reverse push state in which the child's face faces the pusher. Toggle between pushback states. In the prior art, when viewed from the side of the stroller, the upper frame is significantly higher than the lower frame, and the overall volume of the stroller is relatively large. When switching between them, the child needs to be removed from the stroller to realize the state transition.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an improved stroller for children in view of the deficiencies in the prior art.

For realizing the above-mentioned purpose, the technical scheme that the present invention takes is:

A children's stroller has an unfolded state and a folded state, the children's stroller includes a push handle bar, an upper bracket, a lower bracket, and a wheel assembly, and in the unfolded state:

The upper bracket includes an upper connecting piece and a seat arranged on the upper connecting piece;

The lower end of the push handle rod is rotatably connected with the upper connecting piece through a first shaft, and the axis line of the first shaft extends along the left and right directions of the stroller;

The lower brackets include front wheel brackets on the left and right sides, rear wheel brackets on the left and right sides, and lower connecting pieces for connecting the front wheel brackets and/or rear wheel brackets on the left and right sides. The lower parts of the wheel bracket and the rear wheel bracket are provided with wheel assemblies, the upper end of the front wheel bracket on each side is rotatably connected to the upper end of the rear wheel bracket through a second shaft, and the axis line of the second shaft is connected to the upper end of the rear wheel bracket. The axis lines of the first axis are parallel or coincident;

The upper end portion of the front wheel bracket and the upper end portion of the rear wheel bracket form a rotating connection portion around the second shaft, and a shielding cover is provided on the outermost side of the left and right direction of the rotating connection portion. The shielding cover covers at least part of the rotating connecting portion in the left and right outer directions;

The upper connecting piece is rotatably connected with the lower connecting piece through a central shaft, and the axis line of the central shaft extends along the height direction of the stroller;

The axis line of the first shaft passes through the shielding cover, and the axis line of the second shaft also passes through the shielding cover.

In some embodiments, a locking device is disposed between at least two of the push handle bar, the upper bracket, and the lower bracket, and when the locking device is in a locked state, the seat has The reverse push state facing the push handle bar and the forward push state facing away from the push handle bar; when the locking device is in the unlocked state, the upper connecting piece drives the seat to take the central axis as the rotation axis It rotates relative to the lower bracket, and the push handle bar rotates relative to the upper connecting piece around the first axis 6, so that the upper part of the push handle bar swings in the front-rear direction relative to the upper connecting piece. The seat is switched between a reverse push state facing the push handle bar and a forward push state facing away from the push handle bar.

In some embodiments, the axis of the first axis intersects the body of the central axis.

In some embodiments, the axis line of the first shaft intersects the axis line of the central axis perpendicularly.

In some embodiments, the axis line of the second axis is parallel to the axis line of the first axis, and the axis line of the second axis and the axis line of the first axis are located at the same perpendicular to the axis line of the first axis. in the second virtual plane of the horizontal plane.

In some embodiments, the axis of the first shaft is located above the axis of the second shaft.

In some embodiments, the axis of the central axis lies in the second virtual plane.

In some embodiments, the horizontal plane on which the axis line of the second axis lies intersects the entity of the central axis.

In some embodiments, the axis line of the second shaft intersects the axis line of the central axis perpendicularly.

In some embodiments, the lower end of the push handle rod is a disc body with the axis of the first shaft as the center of the circle.

In some embodiments, the axis line of the central axis is located in a first virtual plane perpendicular to the horizontal plane, the axis line of the first axis is perpendicular to the first virtual plane, and the shield cover is The axis line of the first axis is the rotation of the center of the circle, and there is a circular positive shield projection on the first virtual plane, and the central axis also has a positive center on the first virtual plane. Axial projection, the central axis projection at least partially overlaps with the shielding cover projection.

The present invention also provides a children's stroller, which has an unfolded state and a folded state. The children's stroller includes a push handle bar, an upper bracket, a lower bracket, and a wheel assembly. In the unfolded state:

The upper bracket includes an upper connecting piece and a seat arranged on the upper connecting piece;

The lower end of the push handle bar is rotatably connected with the upper connecting piece through a first shaft, and the axis line of the first shaft extends along the left-right direction of the stroller;

The lower brackets include front wheel brackets on the left and right sides, rear wheel brackets on the left and right sides, and lower connecting pieces for connecting the front wheel brackets and/or rear wheel brackets on the left and right sides. The lower part of the wheel bracket and the rear wheel bracket is provided with a wheel assembly, the upper end of the front wheel bracket on each side and the lower connecting piece are connected in rotation through the front axle, and the upper end of the rear wheel bracket on each side is connected with the lower part. The lower connecting piece is rotatably connected by the rear axle, and the axis line of the front axle and the axis line of the rear axle are respectively parallel to the axis line of the first axle;

The upper end portion of the front wheel bracket and the upper end portion of the rear wheel bracket are respectively rotatably connected to the lower connecting piece to form a rotating connection portion, and the outermost side of the left and right direction of the rotating connecting portion is provided with a shield a cover, the shielding cover at least partially covers the rotating connection part in the left and right outer directions;

The upper connecting piece is rotatably connected with the lower connecting piece through a central shaft, and the axis line of the central shaft extends along the height direction of the stroller;

The axis line of the first axle passes through the shielding cover, and the axis line of the front axle and the axis line of the rear axle also respectively pass through the shielding cover.

In some embodiments, a locking device is provided between at least two of the push handle bar, the upper bracket, and the lower bracket. In some embodiments, the device is in a locked state. The seat has a reverse push state facing the push handle bar and a forward push state facing away from the push handle bar; when the locking device is in an unlocked state, the upper connecting piece drives the seat so as to The central axis is the rotation axis that rotates relative to the lower bracket, and the push handle rod rotates around the first axis 6 relative to the upper connecting piece, so that the upper part of the push handle rod rotates relative to the upper connecting piece. Swinging in the front and rear directions, the seat is switched between a reverse push state facing the push handle bar and a forward push state facing away from the push handle bar.

In some embodiments, the axis of the first axis intersects the body of the central axis.

In some embodiments, the axis line of the first shaft intersects the axis line of the central axis perpendicularly.

In some embodiments, the lower end of the push handle rod is a disc body with the axis of the first shaft as the center of the circle.

In some embodiments, the axis line of the central axis is located in a first virtual plane perpendicular to the horizontal plane, the axis line of the first axis is perpendicular to the first virtual plane, and the shield cover is The axis line of the first axis is the rotation of the center of the circle, and there is a circular positive shield projection on the first virtual plane, and the central axis also has a positive center on the first virtual plane. Axial projection, the central axis projection at least partially overlaps with the shielding cover projection.

Due to the application of the above technical solutions, the overall volume of the stroller provided by the present invention is significantly reduced, so that the center of gravity of the upper bracket is lowered, and the entire body of the stroller is stable and balanced during the push or rotation of the stroller.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, which are very important in the art. For those of ordinary skill, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic three-dimensional structure diagram of a stroller in a forward push state according to Embodiment 1 of the present invention;

2 is a partial cross-sectional perspective schematic diagram of the stroller according to Embodiment 1 of the present invention in a forward push state;

3 is a schematic perspective view of a partial explosion of the stroller according to Embodiment 1 of the present invention in a forward push state;

4A is a schematic side view of the stroller according to Embodiment 1 of the present invention after adding leg rests in a forward push state;

Accompanying drawing 4B is A-A sectional schematic diagram in FIG. 4A;

Accompanying drawing 4C is B-B in Fig. 4A sectional schematic diagram;

5A is a schematic side view partial perspective structure diagram of the baby stroller according to Embodiment 1 of the present invention after adding leg rests in a forward push state;

5B is a schematic view of the cross-sectional structure in the direction B-B in FIG. 5A;

6 is a schematic perspective view of the stroller according to Embodiment 1 of the present invention with the upper connector hidden in the forward push state;

7 is a schematic side view of the stroller according to Embodiment 1 of the present invention, with the upper connector hidden in the forward push state;

8 is a schematic view of the projection structure of the child stroller according to the first embodiment of the present invention, which is partially hidden along the axis line of the central axis in a vertical plane perpendicular to the horizontal plane with the upper connector hidden in the forward push state ;

9A is a schematic three-dimensional structure diagram of the stroller of the present invention in a forward push state;

9B is a schematic diagram of the push handle rod of the stroller of the present invention swinging from a forward push state to a vertical state;

9C is a schematic diagram of the rotation process of the stroller of the present invention from the forward push state to the reverse push state;

9D is a schematic diagram of the push handle rod of the stroller of the present invention swinging from a vertical state to a reverse push state;

Accompanying drawing 9E is the structural schematic diagram of the stroller of the present invention in the reverse thrust state;

10 is a schematic three-dimensional structure diagram of the stroller in the forward push state according to the second embodiment of the present invention;

11A is a schematic side view partial perspective structure diagram of the stroller according to the second embodiment of the present invention in a forward push state;

FIG. 11B is a schematic cross-sectional view along the line A-A in FIG. 11A ;

12A is a schematic side view partial perspective structure diagram of the stroller according to the third embodiment of the present invention in a forward push state;

Figure 12B is a schematic cross-sectional view taken along the direction B-B in Figure 12A;

13 is a schematic side view partial perspective structure diagram of the visible central axis of the stroller according to the third embodiment of the present invention in a forward push state;

14 is a schematic side view partial perspective structure diagram of the stroller according to the fourth embodiment of the present invention in a forward push state;

15 is a schematic side view partial perspective structure diagram of the stroller according to the fifth embodiment of the present invention in a forward push state;

16A is a schematic side view partial perspective structure diagram of the stroller according to the sixth embodiment of the present invention in a forward push state;

Figure 16B is a schematic cross-sectional view taken along the direction B-B in Figure 16A;

17 is a schematic three-dimensional structure diagram of the stroller shown in FIG. 9A in a folded state in a forward push state;

1 to 16B are all structural diagrams of the present invention in an unfolded state.

Among them: 1-upper bracket; 11-push handle bar; 12-shield cover; 120-forward shielding cover projection; 13-upper connecting piece; 130-armrest part; 131-backrest part; 2-lower bracket; 21-front Wheel bracket; 22-rear wheel bracket; 23-lower connecting piece; 24-sleeve; 25-rotating connection part; 3-central axis; 31-central axis projection; 4-wheel assembly; 5-seat; 51-leg rest ; 6-first axis; 6000-horizontal plane; 6001-axis of the first axis; 6002-axis of the second axis; 6003-axis of the central axis; 6004-first virtual plane; 6005-th Two virtual planes; 7-second shaft; 71-front shaft; 72-rear shaft; 73-sliding sleeve shaft; 74-sliding sleeve.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", The azimuth or positional relationship indicated by "left-right direction", "height direction", "front-rear direction", etc. is based on Fig. 1. The azimuth or positional relationship shown when the adult pushing the stroller holds the push handle is only for convenience The invention is described and simplified without indicating or implying that the device or element referred to must have a particular orientation, have only a particular orientation, be constructed and operate in a particular orientation and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

It should be noted that, unless otherwise specified, when a feature is called "fixed" or "connected" to another feature, it can be directly fixed or connected to another feature, or it can be indirectly fixed or connected to another feature. on a feature. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. In addition, the descriptions of upper, lower, left, right, etc. used in the present invention are only relative to the mutual positional relationship of each component of the present invention in the accompanying drawings.

Example 1

As shown in Figures 1-8, the present embodiment provides a children's stroller with an unfolded state and a folded state (as shown in Figure 17). The children's stroller includes a push handle bar 11, a lower bracket 2, an upper bracket 1, The central shaft 3, the wheel assembly 4, and the push handle rod 11 are rotatably connected to the upper bracket 1 through the first shaft 6, and the upper bracket 1 is rotatably connected to the lower bracket 2 through the central shaft 3. Among them, in the expanded state:

Specifically, the upper bracket 1 includes an upper connecting member 13 and a seat 5 arranged on the upper connecting member 13, and the above-mentioned push handle bar 11 is rotatably connected to the upper connecting member 13 in the upper bracket 1 through the first shaft 6, and the upper connecting member 13 is connected to the upper bracket 1. The member 13 is rotatably connected with the lower connecting member 23 in the lower bracket 2 through the central shaft 3 . Generally, the stroller has parts such as seat pockets, sleeping pockets or cradles for directly supporting the child. In this embodiment, these parts are collectively referred to as the seat 5, and the face of the child sitting in the seat 5 is referred to as the seat 5 orientation. The seat 5 is directly or indirectly connected with the upper connecting member 13, or the upper connecting member 13 is a part of the seat 5, and the seat 5 and the upper connecting member 13 can rotate around the central axis 3 as a whole. In this embodiment, the seat 5 further includes an armrest portion 130 , a backrest portion 131 and a leg rest 51 .

The push handle bar 11 provided on the left and right sides can be telescopic or foldable, and the position for holding can also be a commonly used setting in the field, which is not limited in the present invention. Specifically in this embodiment, the push handle bar 11 includes an upper push bar and a lower push bar that are telescopically sleeved together, and the upper ends of the push handle bars 11 on both sides are connected by handrails. The lower ends of the push handle rods 11 on both sides are respectively connected in rotation with the upper connecting piece 13 through the first shaft 6, and the axis line 6001 of the first shaft extends along the left and right directions of the stroller; the cover 12 is arranged on the stroller. On the left and right sides, the shielding cover 12 in this embodiment is integrally arranged with the lower end of the push handle bar 11, and the shape of the shielding cover 12 can be any shape. The center is any one of disk shape, ellipse shape, quadrangle shape and triangle shape. The shielding cover 12 in this embodiment is a disk shape or a disk-shaped body with the axis line 6001 of the first axis as the center (circle center). The handle bar 11 in this embodiment can rotate relative to the upper connecting member 13 .

The lower bracket 2 includes a front wheel bracket 21 located symmetrically on the left and right sides, a rear wheel bracket 22 located on the left and right sides, and a lower connecting piece 23 for connecting the front wheel bracket 21 and/or the rear wheel bracket 22 on the left and right sides, The lower connector 23 extends along the left and right directions of the stroller, and the lower connector 23 and the front wheel bracket 21 and/or the rear wheel bracket 22 can be fixedly connected or integrally formed, or can be rotationally connected; the lower part of the lower bracket 2 is provided with The wheel assembly 4, in this embodiment, the lower part of the front wheel bracket 21 and the lower part of the rear wheel bracket 22 are respectively provided with wheel assemblies 4, and the front wheel assembly in this embodiment is a steering wheel. The lower parts of the rear wheel brackets 22 on both sides are connected by a horizontal link in the left-right direction. The upper end of the front wheel bracket 21 on each side is rotatably connected to the upper end of the rear wheel bracket 22 through the second shaft 7. In this embodiment, at the connection position of the front wheel bracket 21 and the rear wheel bracket 22, the front wheel bracket 21 is located at the rear Outside the wheel bracket 22 , the rear wheel bracket 22 is rotatably connected to the lower connector 23 around the axis 6002 of the second shaft, and further, the rear wheel bracket 22 is rotatably connected to the lower connector 23 through the second shaft 7 . The axis line 6002 of the second shaft extends along the left and right directions of the stroller, and the lower connecting pieces 23 are arranged between the rear wheel brackets 22 on both sides.

The axis line 6002 of the second axis is parallel to or coincident with the axis line 6001 of the first axis, which can make the cart more stable and beautiful. In this embodiment, as shown in Fig. 1-2, the axis line 6002 of the second shaft is arranged parallel to the axis line 6001 of the first axis, and the axis line 6001 of the first axis is located on the axis line of the second axis Above 6002, and the axis line 6002 of the second axis and the axis line 6001 of the first axis are located in the same second virtual plane 6005 perpendicular to the horizontal plane, and the axis line 6003 of the central axis is also located in the second virtual plane 6005 Inside.

The upper end portion of the front wheel bracket 21 and the upper end portion of the rear wheel bracket 22 on each side form a rotating connection portion 25 around the second shaft 7, and a shielding cover 12 is provided on the outermost side of the rotating connecting portion 25 in the left-right direction. The left and right outer directions at least partially cover the rotating connecting portion 25 , and the axis line 6001 of the first shaft passes through the shielding cover 12 . The shielding cover 12 may not be integrally connected with the lower end of the push handle bar 11 , but may be provided separately or integrally connected with other peripheral components such as the upper connecting piece 13 or the lower connecting piece 23 .

The outer wall of the rotating connecting part 25 is a cylindrical surface or a conical surface with the axis line 6003 of the central axis as the central axis, that is, at the same height, the outer wall of the rotating connecting part 25 is an arc, and the center of the arc is in the center. On the axis line 6003 of the shaft, the upper bracket 1 of the stroller can smoothly rotate around the axis line 6003 of the central axis. The upper bracket 1 or the push handle bar 11 is in close contact or fit, so that the lower bracket 2 can stably support the upper bracket 1 in the lateral direction of the stroller, thereby enhancing the structural strength of the stroller in the lateral direction.

The upper connecting member 13 is rotatably connected with the lower bracket 2 through the central shaft 3, further, the central shaft 3 is connected with the upper connecting member 13 and the lower bracket 2 respectively, and the axis line 6003 of the central shaft extends along the height direction of the stroller, The axis line 6003 of the central axis lies in a plane perpendicular to the horizontal plane (ie, a vertical plane). The upper bracket 1 is rotatably connected to the lower bracket 2 around the central axis 3 , so that the push handle bar 11 and the upper bracket 1 can be rotated in a horizontal plane relative to the lower bracket 2 around the central axis 3 as a whole. The upper bracket 1 can be freely rotated 180° around the central axis 3 from the forward position to the reverse position; accordingly, the stroller has at least two use states, in this embodiment, the two use states are the forward push state and the reverse state respectively. In the push state, when the stroller is in the forward push state as shown in FIG. 9A , the seat 5 faces forward and faces away from the push handle bar 11 , the backrest portion 131 of the seat 5 is inclined backward, and the armrest portion 130 of the seat 5 faces front, the upper bracket 1 is in the forward position; when the stroller is in the reverse push state as shown in FIG. 9E , the seat 5 is oriented backwards and faces the push handle bar 11, the backrest 131 of the seat 5 is inclined forward, The armrest portion 130 of the seat 5 faces rearward, and the upper bracket 1 is in the reverse position; the front and rear directions of the stroller refer to the arrangement of the front wheel assembly and the rear wheel assembly.

The left and right, height, front and rear orientations of the stroller referred to in the present invention refer to when the stroller is in a forward push state (as shown in Figure 1 and Figure 9A ) or a reverse push state (as shown in Figure 9E ) ), the left and right, height and front and rear orientations of the stroller; vertical, horizontal and other orientations refer to the vertical, horizontal and other positions when the stroller is placed on a level ground when it is in a forward push state or a reverse push state ( 1) for the convenience of describing the inventive content of the present invention.

As shown in FIG. 1 , a vertical plane perpendicular to the left-right direction of the stroller is a first virtual plane 6004 , and the axis line 6001 of the first axis is perpendicular to the first virtual plane 6004 . For the convenience of description, in this embodiment, the axis line 6003 of the central axis 3 is also located in the first virtual plane 6004; There is a circular positive cover projection 120 on the 6004. As shown in FIG. 8 , the projection of the cover 12 on the first virtual plane 6004 is the cover projection 120, and the projection of the central axis 3 on the first virtual plane 6004 It is the central axis projection 31 , and the central axis projection 31 at least partially overlaps with the shielding cover projection 120 ; as shown in FIG. 8 , the central axis projection 31 partially overlaps with the shielding cover projection 120 .

Since the projection of the central axis 31 and the projection of the shielding cover 120 are partially overlapped, when the stroller is viewed from the side of the stroller as shown in FIG. 7 , the central axis 3 is at least partially shielded by the shielding cover 12 , which makes the stroller as a whole more beautiful. , the position of the shielding cover 12 lowers the center of gravity of the upper bracket 1 . During the push or rotation of the stroller, the entire vehicle body is stable and balanced, and the folded height becomes smaller.

Further preferably, the top of the projection 31 of the central axis 3 on the first virtual plane 6004 is located in the projection 120 of the shielding cover, which further improves the aesthetics of the stroller.

The projections of the components involved below, unless otherwise specified, refer to the projections vertically projected on the first virtual plane 6004 .

The axis line 6001 of the first axis intersects with the shielding cover projection 120 . In this embodiment, the axis line 6001 of the first axis passes through the shielding cover 12 . The horizontal plane 6000 where the axis line 6001 of the first axis is located intersects with the entity of the central axis 3 , so that the heights of the first axis and the central axis 3 are close to each other. Further, the axis line 6001 of the first axis intersects with the entity of the central axis 3, and at this time, the positions of the first axis and the central axis 3 are closer in the front-rear direction of the stroller. In this embodiment, as shown in FIG. 7 , the axis line 6001 of the first axis and the axis line 6003 of the central axis are perpendicularly intersected, so that the overall structure of the frame of the stroller is more compact and the center of gravity is stable.

The central shaft 3 is rotatably connected to at least one of the upper bracket 1 and the lower bracket 2 . In this embodiment, the central shaft 3 is fixedly connected or integrally formed with the upper bracket 1 , and the central shaft 3 is rotatably connected to the lower bracket 2 .

In this embodiment, the lower connecting member 23 is located below the upper connecting member 13 , and the central shaft 3 is rotatably connected with the lower connecting member 23 . Specifically, the lower connecting piece 23 is a cross bar whose ends are connected to the left and right rear wheel brackets 22 . As shown in FIGS. 2 and 6 , a sleeve 24 extending in the vertical direction is provided in the middle of the lower connecting piece 23 . , the lower part of the central shaft 3 is rotatably penetrated in the sleeve 24, as shown in FIG. The length of the sleeve 24 in the vertical direction is greater than that of other positions of the lower connecting piece 23 in the vertical direction, which stably supports the central shaft 3 and saves materials. The overall structure of the stroller is more concise.

The horizontal plane where the axis line 6002 of the second axis is located intersects with the entity of the central axis 3, or further, the axis line 6002 of the second axis intersects the entity of the central axis 3. In this embodiment, the axis of the second axis The line 6002 intersects the axis line 6003 of the central axis. The axis line 6002 of the second axis intersects with the shielding cover projection 120 , or further, the axis line 6002 of the second axis passes through the shielding cover 12 , so that the heights of the second axis 7 and the central axis 3 are close.

Locking devices are arranged between at least two of the push handle rod 11 , the upper bracket 1 and the lower bracket 2 , that is, a locking device is provided between the push handle rod 11 and the upper bracket 1 , and between the upper bracket 1 and the lower bracket 2 A locking device is provided. Or a locking device is provided between the push handle bar 11 and the lower bracket 2 , and a locking device is arranged between the upper bracket 1 and the lower bracket 2 . etc., a locking device may also be provided between the push handle bar 11 , the upper bracket 1 , and the lower bracket 2 . There can be various locking devices, which are also in the prior art, for locking or unlocking the two components together, which is not described in detail in this application; when the locking device is in the locked state, the seat 5 can be in the opposite direction facing the push handle bar 11 . In the push state (as shown in FIG. 9E ) or the forward push state (as shown in FIG. 9A ) facing away from the push handle bar 11 ; when the locking device is in the unlocked state, as shown in FIGS. 9A-9E , the upper connecting piece 13 drives the seat 5 to The central axis 3 is a rotation axis that rotates relative to the lower bracket 2, and the handle bar 11 rotates around the first axis 6 relative to the upper connecting piece 13, so that the upper part of the push handle bar 11 swings in the front-rear direction relative to the upper connecting piece 13, and the seat 5. Switch between the reverse push state facing the handle bar 11 and the forward push state facing away from the handle bar 11.

Specifically, as shown in FIG. 9A , when the stroller is in the forward push state, the upper portion of the handle bar 11 is inclined toward the rear of the stroller. After the locking device is unlocked, the upper part of the handle bar 11 can swing forward around the axis line 6001 of the first shaft in the direction of the arrow in FIG. 9A . Similarly, when the stroller is in the reverse push state as shown in FIG. 9E , the push handle bar 11 can also be turned forward around the axis line 6001 of the first shaft.

When the stroller changes from the forward push state to the reverse push state, as shown in FIG. 9A , first the push handle bar 11 swings forward with the first axis 6 as the rotation axis, and can directly swing to a forward inclined position. In order to facilitate the operation, the push lever 11 can be swung to the vertical position as shown in Fig. 9B, and then rotated relative to the lower bracket 2 in the horizontal plane with the central axis 3 as the rotation axis in the direction of the arrows in Fig. 9B-C. The bracket 1 is rotated 180° to the position shown in FIG. 9D , with the seat 5 facing backward. Then, the upper part of the push handle bar 11 is swung backward from the vertical position in FIG. 9D to the position in FIG. 9E , and the stroller enters the reverse push state, completing the transition from the forward push state to the reverse push state. The transition of the stroller from the reverse push state to the forward push state is similar to the above situation, and the reverse operation is sufficient. When the stroller is switched between the forward push state and the reverse push state, the push handle bar 11 , the components of the upper bracket 1 and the seat 5 , and the child in the seat 5 will not interfere with the lower bracket 2 . During the whole transition process, the children in the stroller do not need to leave the stroller, and the push handle bar 11 is in a state of tilting backward no matter whether the stroller is in a forward push state or a reverse push state, which is convenient for the stroller to operate.

Alternatively, first rotate the entire upper bracket 1 and the push handle bar 11 of the stroller 180° relative to the lower bracket 2 with the central axis 3 as the rotation axis, and then make the push handle bar 11 take the first axis 6 as the rotation axis to move away from the front. The direction of the wheel assembly is swung so that the upper part of the handle bar 11 is inclined toward the rear of the stroller.

Embodiment 2

As shown in FIGS. 10 and 11A-B, the difference between this embodiment and the first embodiment is that the lower bracket 2 includes front wheel brackets 21 located on the left and right sides, and rear wheel brackets 22 located on the left and right sides. The lower part 23 connecting the front wheel bracket 21 and the rear wheel bracket 22 on the left and right sides; the lower part of the lower bracket 2 is provided with a wheel assembly 4, in this embodiment, the lower part of the front wheel bracket 21 and the rear wheel bracket 22 are provided with wheels Assembly 4, the upper end of the front wheel bracket 21 on each side is rotatably connected with the upper end of the rear wheel bracket 22 through the second shaft 7, and the axis line 6002 of the second shaft coincides with the axis line 6001 of the first shaft and passes through both In the center of the shielding cover 12, the axis line 6003 of the third axis also intersects perpendicularly with the axis line 6001 of the first axis.

Embodiment 3

As shown in FIGS. 12A , 12B and 13 , the difference between this embodiment and the first embodiment is that in the stroller in this embodiment, the lower bracket 2 includes front wheel brackets 21 located on the left and right sides, The rear wheel bracket 22, the lower connector 23 for connecting the left and right front wheel brackets 21 and the rear wheel bracket 22, the upper connector 13 is rotatably connected with the lower connector 23 through the central axis 3, the front wheel bracket 21 and The lower part of the rear wheel bracket 22 is provided with a wheel assembly 4, the upper end of the front wheel bracket 21 and the upper end of the rear wheel bracket 22 on each side are respectively rotatably connected with the lower connecting piece 23, and the axis line of the rotatable connection is with the first axis. The axis lines 6001 are parallel. Specifically, the upper end of each front wheel bracket 21 is rotatably connected to the lower connecting piece 23 through the front axle 71 , the upper end of each rear wheel bracket 22 is rotatably connected to the lower connecting piece 23 through the rear axle 72 , and the front axle 71 The axis line of the front axle 71 and the axis line of the rear axle 72 are both parallel to the axis line 6001 of the first axle, and the axis line of the front axle 71 and the axis line of the rear axle 72 are located in the same horizontal plane, and the front axle 71 is located in the same horizontal plane. In front of the rear axle 72 , the axis line 6001 of the first axle is located above the horizontal plane where the axis line of the front axle 71 and the axis line of the rear axle 72 are located.

In this embodiment, the upper end portion of the front wheel bracket 21 and the upper end portion of the rear wheel bracket 22 are respectively connected to the lower connecting member 23 in rotation to form a rotating connection portion 25. The oval shielding cover 12 at least partially covers the rotating connecting portion 25 in the left and right outer directions.

The axis line 6001 of the first shaft passes through the center of the ellipse of the shielding cover 12, and the axis line of the rotating shaft where the upper end of the front wheel support 21 and the upper end of the rear wheel support 22 are rotatably connected to the lower connecting piece 23 also pass through. Through the shielding cover 12 , that is, the axis line of the front axle 71 and the axis line of the rear axle 72 also pass through the shielding cover 12 .

As shown in FIG. 12A , the oval shielding cover 12 is rotated 360 degrees with the axis line 6001 of the first axis as the center of the circle, and there is a circular shielding cover projection 120 on the first virtual plane 6004 , specifically a projection 120 centered on the ellipse It is a circle whose center is the center and the major radius of the ellipse is the radius, and the central axis projection 31 at least partially overlaps the shielding cover projection 120 .

Embodiment 4

As shown in FIG. 14 , the difference between this embodiment and the first embodiment is that the shape of the shielding cover 12 is triangular, the axis line 6001 of the first axis and the axis line 6002 of the second axis are arranged in parallel, and both pass through through the cover 12.

Embodiment 5

As shown in FIG. 15 , the difference between this embodiment and the third embodiment is that the shape of the shielding cover 12 is square, the axis line 6001 of the first axis, the axis line of the front axis 71 , and the axis center of the rear axis 72 The lines are arranged parallel to each other and all pass through the shielding cover 12 . The axis line 6001 of the first axis perpendicularly intersects with the axis line 6003 of the third axis, and the axis line 6001 of the first axis passes through the center of the square of the shielding cover 12 .

Embodiment 6

As shown in FIGS. 16A-16B , the difference between this embodiment and the third embodiment is that, in the stroller in this embodiment, the lower bracket 2 includes the front wheel brackets 21 located on the left and right sides, and the rear wheel brackets located on the left and right sides. The wheel bracket 22, the lower connecting piece 23 for connecting the left and right front wheel bracket 21 and the rear wheel bracket 22, the upper connecting piece 13 is rotatably connected with the lower connecting piece 23 through the central axis 3, the front wheel bracket 21 and the rear wheel bracket 23 are rotatably connected. The lower part of the bracket 22 is provided with the wheel assembly 4 . The front wheel bracket 21 is provided with a sliding sleeve 74 that can slide along the front wheel bracket 21 , the rear wheel bracket 22 is rotatably connected to the sliding sleeve 74 through the sliding sleeve shaft 73 , and the axis line of the sliding sleeve shaft 73 is connected to the axis of the first shaft. The heart lines 6001 are parallel. The upper end of the front wheel bracket 21 on each side is rotatably connected to the lower connecting piece 23 through the front axle 71 , and the upper end of the rear wheel bracket 22 on each side is rotatably connected to the lower connecting piece 23 through the rear axle 72 . The center line and the axial center line of the rear axle 72 are respectively parallel to the axial center line 6001 of the first axle. The front axle 71 is located behind the rear axle 72, and the axis line 6001 of the first axle, the axis line of the front axle 71 and the axis line of the rear axle 72 are located in the same horizontal plane, and the axis line 6001 of the first axle is located in the front Between the axis line of the axle 71 and the axis line of the rear axle 72 . The shielding cover 12 is circular, the axis line 6001 of the first axis passes through the center of the shielding cover 12 , and the axis line 6003 of the third axis intersects with the axis line 6001 of the first axis and is located in the same vertical plane.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly, and cannot be regarded as limiting the protection scope of the present invention. All equivalent changes or modifications made according to the tight-fitting essence of the present invention shall be included within the protection scope of the present invention.

Claims (17)

1. The utility model provides a children's shallow, has expansion state and fold condition, children's shallow is including pushing away lever (11), upper bracket (1), lower carriage (2), wheel subassembly (4), its characterized in that, under expansion state:

the upper bracket (1) comprises an upper connecting piece (13) and a seat (5) arranged on the upper connecting piece (13);

the lower end part of the push handle rod (11) is rotatably connected with the upper connecting piece (13) through a first shaft (6), and a shaft axis (6001) of the first shaft extends along the left and right directions of the baby stroller;

the lower support (2) comprises front wheel supports (21) positioned on the left side and the right side, rear wheel supports (22) positioned on the left side and the right side, and lower connecting pieces (23) used for connecting the front wheel supports (21) and/or the rear wheel supports (22) on the left side and the right side, wheel assemblies (4) are arranged on the lower portions of the front wheel supports (21) and the rear wheel supports (22), the upper end portion of each front wheel support (21) is rotatably connected with the upper end portion of the rear wheel support (22) through a second shaft (7), and the shaft axis (6002) of the second shaft is parallel to or coincident with the shaft axis (6001) of the first shaft;

a rotary connecting part (25) is formed at the periphery of the second shaft (7) by the upper end part of the front wheel bracket (21) and the upper end part of the rear wheel bracket (22), a shielding cover (12) is arranged at the outermost side of the rotary connecting part (25) in the left-right direction, and the shielding cover (12) at least partially covers the rotary connecting part (25) in the left-right outer side direction;

the upper connecting piece (13) is rotatably connected with the lower connecting piece (23) through a central shaft (3), and the axis line (6003) of the central shaft extends along the height direction of the baby stroller;

the shaft axis (6001) of the first shaft passes through the shielding cover (12), and the shaft axis (6002) of the second shaft also passes through the shielding cover (12).

2. The stroller of claim 1, wherein: the children cart further comprises a locking device, the locking device is arranged between the push handle rod (11) and the upper support (1), and the locking device is arranged between the upper support (1) and the lower support (2); when the locking device is in a locked state, the seat (5) has a reverse-pushing state facing the push handle rod (11) and a forward-pushing state facing away from the push handle rod (11); when the locking device is in an unlocking state, the upper connecting piece (13) drives the seat (5) to rotate relative to the lower support (2) by taking the central shaft (3) as a rotating shaft, the push handle rod (11) rotates relative to the upper connecting piece (13) around the first shaft (6), so that the upper part of the push handle rod (11) swings relative to the upper connecting piece (13) in the front-back direction, and the seat (5) is switched between a reverse pushing state facing the push handle rod (11) and a forward pushing state backing against the push handle rod (11).

3. Child stroller according to claim 1, characterized in that the axis (6001) of the first shaft intersects the solid body of the central shaft (3).

4. Child stroller according to claim 3, characterized in that the axis (6001) of the first shaft perpendicularly intersects the axis (6003) of the central shaft.

5. Child stroller according to claim 1, characterized in that the axis (6002) of the second shaft is parallel to the axis (6001) of the first shaft, the axis (6002) of the second shaft and the axis (6001) of the first shaft being in a same second virtual plane (6005) perpendicular to the horizontal plane.

6. Child stroller according to claim 5, characterized in that the axis (6001) of the first shaft is located above the axis (6002) of the second shaft.

7. Child stroller according to claim 5, characterized in that the central axis (6003) lies in the second virtual plane (6005).

8. Child stroller according to claim 1, characterized in that the horizontal plane in which the axis (6002) of the second shaft is located intersects the solid of the central shaft (3).

9. Child stroller according to claim 8, characterized in that the axis (6002) of the second shaft perpendicularly intersects the axis (6003) of the central shaft.

10. The stroller of claim 1, wherein the lower end of the push handle bar (11) is a circular disk centered on the axis (6001) of the first shaft.

11. The stroller of claim 1, wherein the axis (6003) of the central shaft is located in a first virtual plane (6004) perpendicular to the horizontal plane, the axis (6001) of the first shaft is perpendicular to the first virtual plane (6004), the shielding cover (12) rotates 360 degrees around the axis (6001) of the first shaft and has a circular forward shielding cover projection (120) on the first virtual plane (6004), the central shaft (3) has a forward central shaft projection (31) on the first virtual plane (6004), and the central shaft projection (31) at least partially overlaps the shielding cover projection (120).

12. The utility model provides a children's shallow, has expansion state and fold condition, children's shallow is including pushing away lever (11), upper bracket (1), lower carriage (2), wheel subassembly (4), its characterized in that, under expansion state:

the upper bracket (1) comprises an upper connecting piece (13) and a seat (5) arranged on the upper connecting piece (13);

the lower end part of the push handle rod (11) is rotatably connected with the upper connecting piece (13) through a first shaft (6), and the shaft axis (6001) of the first shaft extends along the left and right directions of the baby stroller;

the lower support (2) comprises front wheel supports (21) positioned on the left side and the right side, rear wheel supports (22) positioned on the left side and the right side, and lower connecting pieces (23) used for connecting the front wheel supports (21) and/or the rear wheel supports (22) on the left side and the right side, wherein wheel assemblies (4) are arranged on the lower portions of the front wheel supports (21) and the rear wheel supports (22), the upper end portion of each front wheel support (21) is rotatably connected with the lower connecting piece (23) through a front shaft (71), the upper end portion of each rear wheel support (22) is rotatably connected with the lower connecting piece (23) through a rear shaft (72), and the axial lead of the front shaft (71) and the axial lead of the rear shaft (72) are respectively parallel to the axial lead (6001) of the first shaft;

the periphery of the upper end part of the front wheel bracket (21) and the upper end part of the rear wheel bracket (22) which are respectively rotatably connected with the lower connecting piece (23) forms a rotating connecting part (25), the outermost side of the rotating connecting part (25) in the left-right direction is provided with a shielding cover (12), and the shielding cover (12) at least partially covers the rotating connecting part (25) in the left-right outer side direction;

the upper connecting piece (13) is rotatably connected with the lower connecting piece (23) through a central shaft (3), and the axis line (6003) of the central shaft extends along the height direction of the baby stroller;

the shaft axis (6001) of the first shaft penetrates through the shielding cover (12), and the shaft axis of the front shaft (71) and the shaft axis of the rear shaft (72) respectively penetrate through the shielding cover (12).

13. The stroller of claim 12, wherein: the children cart further comprises a locking device, the locking device is arranged between the push handle rod (11) and the upper support (1), and the locking device is arranged between the upper support (1) and the lower support (2); when the locking device is in a locking state, the seat (5) has a reverse pushing state facing the push handle rod (11) and a forward pushing state facing away from the push handle rod (11); when the locking device is in an unlocking state, the upper connecting piece (13) drives the seat (5) to rotate relative to the lower support (2) by taking the central shaft (3) as a rotating shaft, the push handle rod (11) rotates relative to the upper connecting piece (13) around the first shaft (6), so that the upper part of the push handle rod (11) swings relative to the upper connecting piece (13) in the front-back direction, and the seat (5) is switched between a reverse pushing state facing the push handle rod (11) and a forward pushing state backing against the push handle rod (11).

14. Child stroller according to claim 12, characterized in that the axis (6001) of the first shaft intersects the solid of the central shaft (3).

15. The stroller of claim 14, wherein the first axis (6001) perpendicularly intersects the central axis (6003).

16. The stroller of claim 12, wherein the lower end of the push handle bar (11) is a circular disk centered on the axis (6001) of the first shaft.

17. The stroller of claim 12, wherein the axis (6003) of the central shaft is located in a first virtual plane (6004) perpendicular to the horizontal plane, the axis (6001) of the first shaft is perpendicular to the first virtual plane (6004), the shielding cover (12) rotates 360 degrees around the axis (6001) of the first shaft and has a circular forward shielding cover projection (120) on the first virtual plane (6004), the central shaft (3) has a forward central shaft projection (31) on the first virtual plane (6004), and the central shaft projection (31) at least partially overlaps the shielding cover projection (120).

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