CN109367612B - Baby stroller - Google Patents

Abstract

The invention discloses a baby carrier, which at least comprises a bracket rod and a mounting frame which can be connected to the bracket rod in a front-back overturning way around a rotating shaft, wherein the axial lead of the rotating shaft extends along the left-right direction, a front wheel component and/or a rear wheel component comprises a wheel joint with a steering shaft and a wheel body arranged below the wheel joint, the steering shaft can be rotationally connected to the mounting frame around the axial lead of the steering shaft, the baby carrier also comprises a driving rod which is used for driving the mounting frame to overturn back and forth around the rotating shaft in the process of converting the baby carrier between an unfolding state and a folding state, when each rod piece on the baby carrier relatively rotates to open the baby carrier or fold the baby carrier, the driving rod drives the mounting frame to rotate so that the front wheel component and/or the rear wheel component can be unfolded or folded relative to the bracket rod, the baby carrier after folding can not present a higher size due to the height of the front wheel component/the rear wheel component, and the baby carrier after folding is more compact and the baby carrier is further reduced in size.

Description

Baby stroller

Technical Field

The invention relates to a baby carriage.

Background Art

At present, there are various structures of baby strollers such as child strollers on the market, and their structures are of various types, and the folding principles are also different. The sizes after folding are also very different. How to reduce the size of the baby stroller as much as possible after folding has always been the goal pursued by researchers in this field. At present, after folding, most baby strollers only have the frame part folded, and the wheel assembly is erected at the bottom of the frame in a 7-shape, resulting in the baby stroller still having a large size after folding.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a baby carriage in which the front wheel assembly can be turned over and folded when the frame is folded, so as to further reduce the size of the baby carriage after folding.

To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a baby carriage, comprising a frame with an unfolded state and a folded state, a front wheel assembly arranged at the front bottom of the frame, and a rear wheel assembly arranged at the rear bottom of the frame, the frame at least comprising a support rod and a mounting frame connected to the support rod so as to be able to flip forward and backward around a rotating shaft, wherein the axis center line of the rotating shaft extends in the left and right direction, the front wheel assembly and/or the rear wheel assembly comprises a wheel joint having a steering shaft and a wheel body arranged below the wheel joint, the steering shaft being able to be rotatably connected to the mounting frame around its own axis center line, the frame also comprising a driving rod for driving the mounting frame to flip forward and backward around the rotating shaft during the conversion of the frame between the unfolded state and the folded state, when the frame is in the unfolded state, the front wheel assembly and/or the rear wheel assembly are propped up below the frame, and the steering shaft extends in the up and down direction; when the frame is in the folded state, the wheel joint and the support rod are close to each other.

Preferably, the frame includes two side brackets respectively arranged on the left and right sides, a vertically extending center plane is provided between the two side brackets, and the axis of the rotating shaft is perpendicular to the center plane.

Preferably, the support rod is a chassis extending in the front-to-back direction, the mounting frame is connected to the front and/or rear of the chassis via the rotating shaft, and when the frame is in a folded state, the wheel joint is folded at the bottom of the chassis.

Furthermore, the mounting frame is connected to the front part of the base frame, the front wheel assembly is mounted on the mounting frame, the frame at least includes a front support rod extending upward from front to rear, the lower pivot of the front support rod is connected to the front part of the base frame, one end of the driving rod is pivotally connected to the mounting frame through a first axis, the first axis and the axis center line of the rotating shaft are parallel to each other; the other end of the driving rod is arranged on the front support rod so as to be able to rotate relatively and slide along the length direction of the front support rod.

Furthermore, the lower portion of the front support rod is pivotally connected to the front portion of the base frame via a second axis, and the axis center lines of the second axis and the rotating shaft are parallel to each other.

Furthermore, the underframe includes a front bottom bar and a rear bottom bar slidably connected in the front-to-back direction, and the frame also includes a push rod, a rear support rod and a connecting rod extending in the up-down direction, the upper portion of the front support rod is rotatably connected to the push rod via a third axis, the lower portion of the push rod and the upper portion of the rear support rod are rotatably connected via a fourth axis, the lower portion of the rear support rod is rotatably connected to the rear bottom bar via a fifth axis, the front portion of the connecting rod is rotatably connected to the front portion of the front bottom bar via a sixth axis, and the rear portion thereof is rotatably connected to the rear support rod via a seventh axis, and the axial center lines of the sixth axis and the rotating shaft are parallel or colinear with each other.

Furthermore, a linkage rod is provided between the push rod and the front support rod, one end of the linkage rod is rotatably connected to the push rod through an eighth axis, and the other end of the linkage rod is provided on the front support rod so as to be capable of both relative rotation and sliding along the length direction of the front support rod, and the linkage rod and the driving rod are arranged to move synchronously along the length extension direction of the front support rod.

Furthermore, the base frame includes two bottom support rods which are respectively arranged on the left and right sides and extend in the front-to-back direction, each of the bottom support rods includes the front bottom rod and the rear bottom rod, and the mounting frame is arranged between the front end portions of the front bottom rods on both sides; accordingly, the front support rod, push rod, rear support rod, connecting rod and driving rod all have two groups which are respectively arranged on the left and right sides.

Furthermore, the chassis at least includes two bottom support rods which are arranged on the left and right sides and extend in the front-to-back direction, the mounting frame is rotatably connected to the front part of the bottom support rods around the rotating shaft, and the front wheel assembly is mounted on the mounting frame; at least one group of rear wheel assemblies is provided at the rear part of each of the bottom support rods, and when the frame is in a folded state, the wheel body of the front wheel assembly is located between the two bottom support rods in the left-right direction and in front of the rear wheel assembly.

As a preferred implementation, the mounting frame is a footboard.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the baby carriage of the present invention installs the front wheel assembly and/or the rear wheel assembly on a mounting frame, and the mounting frame is rotatably connected to the bottom of a support rod on the frame. When the rods on the frame rotate relatively to open the frame or fold the frame, the mounting frame is driven by the driving rod to rotate so that the front wheel assembly and/or the rear wheel assembly are opened or folded relative to the support rod, so that the folded frame will not present a higher size due to the height of the front wheel assembly and/or the rear wheel assembly, so that the structure of the folded frame is more compact and the size is further reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a perspective view of the baby carriage of this embodiment in an unfolded state;

Figure 2 is a three-dimensional view of the baby carriage of Figure 1 in a semi-folded state;

Figure 3 is a side view of the baby carriage of Figure 2;

Figure 4 is another perspective view of the baby carriage of Figure 1 in a semi-folded state;

Figure 5 is a perspective view of the baby carriage of Figure 1 in a folded state;

Figure 6 is a second perspective view of the baby carriage of Figure 1 in a folded state;

Among them: 1. chassis; 100. bottom support rod; 101. front bottom rod; 102. rear bottom rod; 2. mounting frame (footboard); 3. front support rod; 31. lower slide groove; 32. upper slide groove; 4. driving rod; 5. rear support rod; 6. connecting rod; 7. push rod; 71. lower push rod; 72. upper push rod; 8. linkage rod; 9. pin shaft;

10. rotating shaft; 11. first shaft; 12. second shaft; 13. third shaft; 14. fourth shaft; 15. fifth shaft; 16. sixth shaft; 17. seventh shaft; 18. eighth shaft; 19. sliding pin; 20. front wheel assembly; 201. wheel joint; 202. wheel body; 30. rear wheel assembly.

DETAILED DESCRIPTION

The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

1 to 6 , the stroller is specifically a child stroller, which includes a frame having an unfolded state and a folded state, a front wheel assembly 20 disposed at the front bottom of the frame, and a rear wheel assembly 30 disposed at the rear bottom of the frame.

The frame at least comprises a base frame 1 extending in the front-to-back direction, and a mounting frame 2 connected to the front of the base frame so as to be flippable around a rotating shaft 10. The axis of the rotating shaft 10 extends in the left-right direction. The frame has two side brackets arranged on the left and right sides, and a vertically extending center plane is provided between the two side brackets. The axis of the rotating shaft 10 is perpendicular to the center plane. In this embodiment, the side brackets on the left and right sides are symmetrically arranged about the center plane, that is, the center plane is the center symmetry plane of the side brackets on the left and right sides.

The rear wheel assembly 30 is installed at the rear of the chassis 1; the front wheel assembly 20 is installed on the mounting frame 2. Specifically, the front wheel assembly 20 includes a wheel joint 201 with a steering shaft (not shown in the figure) and a wheel body 202 arranged below the wheel joint 201. The upper part of the wheel joint 201 is installed at the bottom of the mounting frame 2, that is, the steering shaft can be rotatably connected to the mounting frame 2 around its own axis, so that the front wheel assembly 20 can be universally rotated to achieve steering.

The frame also includes a driving rod 4 for driving the mounting frame 2 to flip forward and backward around the rotating shaft 10 during the conversion of the frame between the unfolded state and the folded state. When the rods on the frame rotate relatively to achieve the folding of the frame, the driving rod 4 will drive the mounting frame 2 to flip and rotate and retract toward the bottom of the base frame 1, so that the wheel joint 201 is retracted at the bottom of the base frame 1, effectively reducing the height of the frame after folding; when the rods on the frame rotate relatively to unfold the frame, the driving rod 4 drives the mounting frame 2 to flip and open the front wheel assembly 20 relative to the base frame 1.

Referring to Figures 1 to 6, the frame at least includes a front support rod 3 extending upward from front to rear, the lower part of the front support rod 3 is pivotally connected to the front part of the base frame 1, one end of the driving rod 4 is pivotally connected to the mounting frame 2 through a first shaft 11, and the axis line of the first shaft 11 and the rotating shaft 10 are parallel to each other and do not overlap; the other end of the driving rod 4 is arranged on the front support rod 3 so as to be able to rotate relatively and slide relatively along the length direction of the front support rod 3.

In this embodiment, the lower part of the front support rod 3 is pivotally connected to the front part of the base frame 1 through the second shaft 12, and the axis center lines of the second shaft 12 and the rotating shaft 10 are parallel to each other and do not overlap each other; the lower end of the driving rod 4 is connected to the mounting frame 2 through the first shaft 11, and the upper end of the driving rod 4 is rotatably provided with a sliding pin 9, and the lower part of the front support rod 3 is provided with a lower sliding groove 31, and the sliding pin 9 is slidably arranged in the lower sliding groove 31. When the frame is folded, the front support rod 3 rotates and retracts relative to the base frame 1, driving the driving rod 4 to rotate and then driving the mounting frame 2 to flip, so that the front wheel assembly 20 is gradually retracted at the bottom of the base frame 1, as shown in Figures 4, 5, and 6. Similarly, when the frame is unfolded, the front support rod 3 rotates and opens relative to the base frame 1, driving the driving rod 4 to rotate and flip the mounting frame 2, and then the front wheel assembly 20 is unfolded.

Specifically, referring to the accompanying drawings, in the frame of this embodiment, the bottom frame 1 includes two bottom support rods 100 respectively arranged on the left and right sides, the mounting frame 2 is a footboard arranged between the front parts of the bottom support rods 100 on both sides, and at least one set of rear wheel assemblies 30 is arranged at the rear part of each bottom support rod 100.

1 to 6 , each bottom support rod 100 includes a front bottom rod 101 and a rear bottom rod 102 slidably connected along the front-to-back direction. Here, the rear portion of the front bottom rod 101 is slidably inserted into the front rod cavity of the rear bottom rod 102 . In addition to the front support rod 3 and the driving rod 4, the left and right sides of the frame also have a push rod 7, a rear support rod 5 and a connecting rod 6 extending in the up-down direction. The upper part of the front support rod 3 is rotatably connected to the push rod 7 through a third shaft 13, and the lower part of the push rod 7 is rotatably connected to the upper part of the rear support rod 5 through a fourth shaft 14, and the fourth shaft 14 is located below the third shaft 13 on the push rod 7; the lower part of the rear support rod 5 is rotatably connected to the rear bottom rod 102 through a fifth shaft 15, the front part of the connecting rod 6 is rotatably connected to the front part of the front bottom rod 101 through a sixth shaft 16, and the rear part is rotatably connected to the rear support rod 5 through a seventh shaft 17, the sixth shaft 16 can be parallel to the axis of the rotating shaft 10 or coaxially arranged according to the present embodiment, and the seventh shaft 17 is located between the fourth shaft 14 and the fifth shaft 15 on the rear support rod 5.

The push rod 7 is a structure that can be extended and retracted along the length direction, and includes a lower push rod 71 and an upper push rod 72 that are connected by sliding and telescopic connection, and the upper push rods 72 on both sides are integrally arranged in a U-shape with the opening facing downward. A linkage rod 8 is also arranged between the lower push rod 71 and the front support rod 3, and the upper end of the linkage rod 8 is rotatably connected to the lower push rod 71 through the eighth shaft 18, and the lower end of the linkage rod 8 can be relatively rotated and can be slidably arranged on the front support rod 3 along the length direction of the front support rod 3. Here, a sliding pin 19 is rotatably arranged at the lower end of the linkage rod 8, and an upper slide groove 32 extending along the length direction of the front support rod 3 is arranged on the upper part of the front support rod 3, and the sliding pin 19 is slidably inserted in the upper slide groove 32. In this embodiment, the sliding pin 19 and the sliding pin 9 are fixed to each other and are synchronously slidably arranged along the length extension direction of the front support rod 3, so that the linkage rod 8 and the driving rod 4 can move synchronously along the length extension direction of the front support rod 3.

When the frame is in the unfolded state, as shown in FIG1 , the front bottom bar 101 and the rear bottom bar 102 of the chassis 1 are unfolded along the length direction, the front wheel assembly 20 is supported at the front of the chassis 1, and the rear wheel assembly 30 is supported at the rear of the chassis 1, the front support rod 3 and the push rod 7 on the same side extend along the same length direction, and a stable triangular structure is formed between the bottom support rod 100, the rear support rod 5 and the connecting rod 6, and between the bottom support rod 100, the rear support rod 5 and the front support rod 3, so that the frame has good stability and carrying capacity; viewed from the side of the frame, the driving rod 4 and the linkage rod 8 are basically blocked by the front support rod 3 and the push rod 7, and the appearance is very simple.

When the frame is folded, as shown in FIGS. 2 to 4 , the push rod 7 is retracted along the length direction and then flipped forward, and the front support rod 3, the rear support rod 5 and the connecting rod 6 are all rotated and folded toward the chassis 1, and the front bottom rod 101 and the rear bottom rod 102 of the chassis 1 are retracted along the front-back direction. At the same time, under the rotation of the front support rod 3, the driving rod 4 drives the mounting frame 2 to gradually rotate and fold backward relative to the chassis 1. Finally, the push rod 7, the front support rod 3, the rear support rod 5 and the connecting rod 6 are all folded above the chassis 1, and the front wheel assembly 20 is rotated and folded to the bottom of the chassis 1, wherein the wheel joint 201 and the chassis 1 are close to each other, and the wheel body 202 is located between the bottom support rods 100 on both sides and in front of the rear wheel assembly 30. The folded frame is shown in FIGS. 5 and 6 , and its structure is very flat, and because the wheel joint 201 is completely flipped to extend along the front-back direction, the height dimension of the front part of the frame after folding is greatly reduced. The frame folding and unfolding operation is also very simple. There is no need to add any additional operation steps due to the need to fold the front wheel assembly, so it is very convenient to use.

In other embodiments, the mounting frame 2 can also be rotatably connected to other support rods of the frame through the rotating shaft 10, and the front wheel assembly 20 can be installed on the mounting frame 2. During the unfolding and folding process of the frame, the driving rod drives the mounting frame 2 to flip forward and backward around the rotating shaft 10, so that the front wheel assembly 2 is opened or folded relative to the support rod, so that the folded frame will not present a higher size due to the height of the front wheel assembly 20, so that the structure of the folded frame is more compact and the size is further reduced.

In certain other embodiments, the rear wheel assembly 30 may be arranged in the above manner so that the height of the rear wheel assembly 30 can be lowered when the frame is folded, thereby further reducing the size of the folded frame.

The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a bassinet, includes the frame that has expansion state and folding state, locates the front wheel subassembly at the bottom of the frame front portion, and locates the rear wheel subassembly at the bottom of the frame rear portion, its characterized in that: the frame at least comprises a bottom frame extending along the front-back direction, a mounting frame capable of being connected to the front part of the bottom frame in a front-back overturning manner around a rotating shaft, wherein the axial lead of the rotating shaft extends along the left-right direction, the front wheel assembly comprises a wheel joint with a steering shaft and a wheel body arranged below the wheel joint, the steering shaft is rotatably connected to the mounting frame around the axial lead of the steering shaft, the bottom frame comprises a front bottom rod and a rear bottom rod which are slidingly connected along the front-back direction, the frame also comprises a front supporting rod extending from front to back upwards, a push rod extending along the up-down direction, a rear supporting rod and a connecting rod, the lower part of the front supporting rod is pivotally connected to the front part of the front bottom rod, the upper part of the front supporting rod is rotatably connected to the push rod through a third shaft, the lower part of the push rod is rotatably connected to the upper part of the rear supporting rod through a fourth shaft, the lower part of the rear supporting rod is rotatably connected to the rear bottom rod through a fifth shaft, the front part of the connecting rod is rotatably connected to the front bottom rod through a seventh shaft, the rear supporting rod is rotatably connected to the rear shaft through the sixth shaft is parallel to the axial lead of the rear shaft,

The frame also comprises a driving rod which is used for driving the mounting frame to turn back and forth around the rotating shaft in the process of converting the frame between the unfolding state and the folding state, one end part of the driving rod is connected to the mounting frame through a first shaft pivot, and the first shaft is parallel to the shaft axis of the rotating shaft; the other end part of the driving rod can relatively rotate and can be slidably arranged on the front support rod along the length direction of the front support rod, when the frame is in a unfolding state, the front wheel assembly and/or the rear wheel assembly are/is supported below the frame, and the steering shaft extends along the up-down direction; when the frame is in a folding state, the front support rod and the rear support rod slide to shorten the length of the underframe, the push rod, the front support rod, the rear support rod and the connecting rod are folded above the underframe, and the wheel joint is converted to extend along the front-rear direction and folded at the bottom of the underframe.

2. A stroller according to claim 1, wherein: the frame comprises two side brackets which are respectively arranged at the left side and the right side, a vertically extending center surface is arranged between the two side brackets, and the axial lead of the rotating shaft is perpendicular to the center surface.

3. A stroller according to claim 1, wherein: the mounting frame is connected to the front part and/or the rear part of the underframe through the rotating shaft.

4. A stroller according to claim 3, wherein: the mounting frame is connected to the front portion of the underframe, and the front wheel assembly is mounted on the mounting frame.

5. The stroller of claim 4, wherein: the lower part of the front support rod is connected with the front part of the underframe through a second shaft pivot, and the second shaft is parallel to the axis of the rotating shaft.

6. The stroller of claim 4, wherein: the push rod with still be equipped with the gangbar between the preceding branch, the one end of gangbar passes through eighth axle and rotationally connects on the push rod, the other end of gangbar can be relatively rotated and can follow preceding branch's length direction is located with sliding on the preceding branch, just the gangbar with the actuating lever is followed preceding branch's length direction of extension synchronous motion sets up.

7. The stroller of claim 4, wherein: the underframe comprises two bottom stay bars which are respectively arranged at the left side and the right side and extend along the front-back direction, each bottom stay bar comprises a front bottom stay bar and a back bottom stay bar, and the mounting frame is arranged between the front end parts of the front bottom stay bars at the two sides; correspondingly, the front support rod, the push rod, the rear support rod, the connecting rod and the driving rod are respectively provided with two groups which are arranged on the left side and the right side.

8. A stroller according to claim 3, wherein: the chassis at least comprises two bottom supporting rods which are respectively arranged at the left side and the right side and extend along the front-back direction, the mounting frame is rotationally connected to the front part of the bottom supporting rods around the rotating shaft, and the front wheel assembly is mounted on the mounting frame; the rear part of each bottom stay bar is provided with at least one group of rear wheel components, and when the frame is in a folded state, the wheel body of the front wheel component is positioned between the two bottom stay bars along the left-right direction and is positioned in front of the rear wheel component.

9. A stroller according to any one of claims 1 to 8, wherein: the mounting frame is a pedal.