CN114212140B - Children's barrow - Google Patents

Abstract

The invention discloses a stroller, which comprises a frame, a push rod frame and a seat frame, wherein the push rod frame extends along the vertical direction, the seat frame extends along the front-rear direction, a front wheel assembly and a rear wheel assembly are arranged at the bottom of the bottom frame, the lower part of the push rod frame is rotationally connected to the bottom frame, a sliding piece is rotationally connected to the seat frame, the sliding piece can be relatively slidably arranged on the push rod frame along the length extension direction of the push rod frame, the stroller also comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod respectively extend along the vertical direction, the first connecting rod is rotationally connected between the front part of the seat frame and the bottom frame, and the second connecting rod is rotationally connected between the rear part of the seat frame and the bottom frame. The frame can be switched between the first using state and the second using state only by turning the push rod frame back and forth in the unfolding state, so that the baby stroller can be pushed forwards or backwards.

Description

stroller

technical field

The invention relates to a stroller for children, in particular to a stroller for children with reversible push rods.

Background technique

In the prior art, in order to meet the different needs of users, many strollers have a positive use state where the child faces the parents and a reverse use state where the child faces the parents. In order to achieve this function, the seat pockets of some strollers Detachably connected to the frame, the seat can be mounted on the frame in different orientations. However, this requires a separate configuration of the seat pocket, and the seat pocket needs to be disassembled and reinstalled when changing directions, and it takes up a lot of space after being folded, which is inconvenient to use.

Chinese patent CN212637612U provides a kind of stroller for children, in which the push rod frame is flipped back and forth to make the stroller have a forward use state and a reverse use state, however, the push rod is in a forward use state or a reverse use state, The position of the seat frame remains unchanged, and the center of gravity of the frame changes after the reversing operation, which may easily cause the center of gravity of the frame to be unstable in either the forward or reverse use state, and affect the overall performance.

Contents of the invention

The object of the present invention is to provide a new type of stroller for children which solves one or more problems of the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is: a children's stroller, including a vehicle frame in an unfolded state, a front wheel assembly and a rear wheel assembly arranged at the bottom of the frame, and in the expanded state, the stroller The frame includes a bottom bracket, a push rod frame extending in the up-down direction, and a seat frame extending in the front-rear direction, the front wheel assembly and the rear wheel assembly are arranged at the bottom of the bottom bracket, and the lower part of the push rod frame It is rotatably connected to the bottom bracket around the first rotation center line, and the seat frame is rotatably connected to a sliding part, and the sliding part can be relatively slidably arranged on the On the push rod frame, the vehicle frame also includes a first link and a second link extending in the vertical direction, the first link is rotatably connected between the front part of the seat frame and the bottom bracket Between, the second link is rotatably connected between the rear part of the seat frame and the bottom bracket, the frame has a first use state and a second use state, when the frame is in the In the first use state, the push rod frame extends obliquely upward from front to rear, and when the vehicle frame is in the second use state, the push rod frame extends obliquely upward from rear to front.

Preferably, the slider is rotatably connected to the seat frame around the second rotation centerline, and the lower end of the first link and the lower end of the second link are respectively rotatably connected to the bottom bracket Above, the upper end of the first link is connected to the seat frame rotatably around the third centerline of rotation, and the upper end of the second link is connected to the seat frame rotatably around the fourth centerline of rotation Above, the third rotation centerline, the second rotation centerline and the fourth rotation centerline are parallel to each other and arranged in sequence along the length direction of the seat frame.

Further preferably, the bottom bracket includes a front bracket and a rear bracket, the front wheel assembly is arranged at the bottom of the front bracket, the rear wheel assembly is arranged at the bottom of the rear bracket, the upper part of the front bracket, Two of the three of the upper part of the rear bracket and the lower part of the push rod frame are rotationally connected, and the third is rotationally connected with one of the aforementioned two, or the upper part of the front bracket, the The upper part of the rear bracket and the lower part of the push rod frame are jointly rotatably connected around the first rotation center line, the lower end of the first connecting rod is rotatably connected to the front bracket, and the first The lower ends of the two connecting rods are rotatably connected to the rear bracket.

Preferably, when the vehicle frame is in the first use state, the first connecting rod and the second connecting rod both extend obliquely from front to rear; when the vehicle frame is in the second use state In this state, both the first connecting rod and the second connecting rod extend obliquely upward from back to front.

Preferably, during the transition of the vehicle frame from the first use state to the second use state, the seat frame moves forward from the first position to the second position in the front-rear direction.

Preferably, the seat frame has a sitting and standing support surface extending backwards and downwards, an angle α is formed between the sitting and standing support surface and the horizontal plane, and the vehicle frame moves from the first use state to the next position. During the transition process of the second use state, the included angle α increases.

Further preferably, when the vehicle frame is in the unfolded state, the sitting and standing support surface is always located above the first rotation center line in the vertical direction.

Preferably, the push rod frame has two sets of push rods respectively arranged on the left and right sides and extending along the up and down directions, the seat frame is arranged between the two sets of push rods along the left and right directions, and the slider includes respectively Two sets of sliding sleeves are rotatably connected to the left and right sides of the seat frame, and the two sets of sliding sleeves are sleeved on the push rods on the corresponding sides in a sliding fit.

Preferably, the bottom bracket is foldable, and the frame also has a folded state. When the frame is in the folded state, the bottom bracket is folded and the seat frame and the push rod are folded together. the front of the bottom bracket.

Further preferably, the bottom bracket includes a front bracket and a rear bracket, the front wheel assembly is arranged at the bottom of the front bracket, the rear wheel assembly is arranged at the bottom of the rear bracket, the upper part of the front bracket, The upper part of the rear bracket and the lower part of the push rod frame are jointly rotatably connected around the first rotation center line, and the first connecting rod is rotatably connected between the front bracket and the seat frame Between, the second link is rotatably connected between the rear frame and the seat frame, when the frame is in the folded state, the push rod frame, the front frame and the rear frame are The front and back direction is folded, and the seat frame is folded between the push rod frame and the front bracket.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: In the children's stroller of the present invention, the vehicle frame only needs to turn the push rod frame back and forth in the unfolded state, so that the vehicle frame can be in the first position. Switching between the use state and the second use state enables the child stroller to be pushed forward or backward. In the process of turning over the push rod frame to realize the conversion of the frame use state, the seat frame is linked to switch positions along the front and rear directions, so that the overall center of gravity of the frame remains basically unchanged in the first use state and the second use state , can maintain good stability.

Description of drawings

Accompanying drawing 1 is the three-dimensional structural schematic view of the vehicle frame of a specific embodiment of the children's stroller in the unfolded state and in the first use state of the present invention;

Accompanying drawing 2 is the side view schematic diagram of the vehicle frame of accompanying drawing 1;

Accompanying drawing 3 is a schematic side view of the vehicle frame of accompanying drawing 2 converted to a second use state;

Accompanying drawing 4 is the schematic side view of the vehicle frame of accompanying drawing 1 during the transition process between the first use state and the second use state;

Accompanying drawing 5 is a schematic side view of the vehicle frame of Fig. 1 converted to a folded state.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The following up, down, left, right, front and rear are all defined with reference to the directions observed when the child sits and stands on the stroller when the frame of the stroller is in an unfolded state.

Referring to the children's stroller shown in Figures 1 to 5, it includes a frame in an unfolded state, a front wheel assembly 20 and a rear wheel assembly 30 located at the bottom of the frame. The extended push rod frame 1, the seat frame 4 extending in the front-rear direction, the front wheel assembly 20 and the rear wheel assembly 30 are all arranged at the bottom of the bottom bracket. The lower part of the push rod frame 4 is rotatably connected to the bottom bracket around a first rotation centerline A, and the first rotation centerline A extends along the left-right direction. A slider is rotatably connected to the seat frame 4 , and the slider can be relatively slidably arranged on the push rod frame 1 along the length extension direction of the push rod frame 1 .

The vehicle frame also includes a first connecting rod 6 and a second connecting rod 7 respectively extending in the up and down direction. The first connecting rod 6 is rotatably connected between the front part of the seat frame 4 and the bottom bracket, and the second connecting rod 7 rotates. Ground is connected between the rear portion of the seat frame 4 and the bottom bracket. The vehicle frame has a first use state and a second use state. When the vehicle frame is in the first use state, as shown in Fig. 1 and Fig. 2, the push rod frame 1 extends obliquely from front to rear; 2. In the state of use, as shown in Figure 3, the push rod frame 1 extends obliquely from the rear to the front, and as shown in Figure 4, during the rotation of the push rod frame 1 around the first rotation center line A, the vehicle frame is The above-mentioned first use state and the second use state are switched.

Referring to the accompanying drawings, the bottom bracket is foldable. The bottom bracket includes a front bracket 2 and a rear bracket 3 that extend obliquely along the up and down directions when the vehicle frame is in an unfolded state. The front wheel assembly 20 is arranged on the front bracket 2. The bottom of the rear wheel assembly 30 is located at the bottom of the rear bracket 3, the upper part of the front bracket 2, the upper part of the rear bracket 3 and the lower part of the push rod frame 1 are rotationally connected and the third is connected with the aforementioned two One of them is rotatably connected, or as in this embodiment, the upper part of the front bracket 2, the upper part of the rear bracket 3 and the lower part of the push rod frame 1 are jointly rotatably connected together around the first rotation centerline A . The lower end of the first link 6 is rotatably connected to the front bracket 2 and the upper end of the first link 6 is rotatably connected to the front of the seat frame 4, and the lower end of the second link 7 is rotatably connected to the rear bracket 3 and the upper end of the second link 7 is rotatably connected to the rear portion of the seat frame 4 .

Specifically, the push rod frame 1 has two sets of push rods 11 respectively arranged on the left and right sides and extending in the up and down directions. Push rod 1b, the seat frame 4 is arranged between two groups of push rods 11 along the left and right direction, and the sliding member includes two groups of sliding sleeves 5 that are connected to the left and right sides of the seat frame 4 in rotation around the second rotation center line B respectively. The sliding sleeves 5 are sleeved on the lower push rods 1a on the corresponding sides in a sliding fit.

The front bracket 2 has two groups of front struts 21 which are respectively arranged on the left and right sides and extend obliquely upward from the front to the rear, and a front cross bar 22 fixed between the lower parts of the two groups of front struts 21 , each group of front struts 21 The lower part is provided with a set of front wheel assemblies 20; the rear support 3 has two sets of rear struts 31 which are arranged on the left and right sides and extend upwards from the rear to the front, and are fixed between the lower parts of the two sets of rear struts 31. A set of rear wheel assemblies 30 is arranged on the lower part of each set of rear struts 31 of the cross bar 32 . On the left and right sides of the vehicle frame, the upper part of the front strut 21 , the upper part of the rear strut 31 and the lower part of the lower push rod 1 a are jointly rotatably connected around the first rotation centerline A.

A set of first connecting rod 6 and second connecting rod 7 are provided on each side of the vehicle frame. The lower end of the rod 6 is rotatably connected to the front strut 21 on the same side around the fifth rotation centerline E; the upper end of the second connecting rod 7 is rotatably connected to the seat frame 4 around the fourth rotation centerline D. The lower ends of the two connecting rods 7 are rotatably connected to the rear support rod 31 on the same side around the sixth rotational centerline F. Along the front-rear direction of the seat frame 4, the third centerline of rotation C, the second centerline of rotation B, and the fourth centerline of rotation D are sequentially arranged from front to back.

The stroller also includes a locking mechanism for locking the frame in the unfolded state and in the first use state or the second use state. The bottom bracket locking mechanism (not shown in the figure) is locked to make the bottom bracket open stably, and the reversing locking mechanism is arranged between the push rod frame 1 and the bottom bracket for relative locking between the two, When the bottom bracket locking mechanism is kept in the locked state, unlocking the reversing locking mechanism can drive the push rod frame 1 to turn back and forth to realize the fast switching between the first use state and the second use state of the vehicle frame.

Referring to Fig. 1 and Fig. 2, the frame of the stroller is in the unfolded state, and the frame is in the first use state, the push rod frame 1 extends obliquely upward from the front to the rear, and the seat frame 4 at this time is in the front-to-rear direction Located at the first position, the first connecting rod 6 and the second connecting rod 7 are in the state of extending upwards from front to rear, and the seat frame 4 has a sitting support surface 4a extending backwards and downwards. The surface 4 a is always located above the first rotational centerline A in the vertical direction. An included angle α is formed between the sitting support surface 4a and the horizontal plane, and the angle value of the included angle α is an acute angle smaller than 45°.

Referring to Fig. 4, when the vehicle frame needs to be converted to the second use state, the push rod frame 1 is turned forward, and the rotating seat frame 4 of the push rod frame 1 moves forward, and at the same time, the first connecting rod 6 and the second Two connecting rods 7 swing forward respectively. As shown in FIG. 3 , the push rod frame 1 is flipped forward to the front of the vehicle frame, the push rod frame 1 is in a state extending from back to front and inclined upward, and the vehicle frame is converted into a second use state. When the vehicle frame is in the second use state, the seat frame 4 is located at the second position in the front-rear direction, and the second position is located in front of the above-mentioned first position; In the state where the front extends obliquely upward, the angle α formed between the sitting support surface 4a and the horizontal plane increases. When the vehicle frame is in the first use state and the second use state, the overall center of gravity of the vehicle frame remains basically unchanged in the front and rear directions, so that the vehicle frame has good stability in the two different use states.

Referring to Fig. 5, when the vehicle frame needs to be folded, the front bracket 2 and the rear bracket 3 are folded along the front and rear directions, and the upper push rod 1b and the lower push rod 1a of the push rod frame 4 are relatively folded and folded on the front bracket. 2, the two groups of rear wheel assemblies 30 are folded between the two groups of front wheel assemblies 20 along the left and right directions, and the first connecting rod 6 and the second connecting rod 7 are flipped forward so that the seat frame 4 is folded forward in a flipped forward manner. Between the push rod frame 1 and the front bracket 2. The folded frame structure is very flat and compact, taking up less space.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (9)

1. The utility model provides a children's shallow, includes the frame that has the expansion state, locates the front wheel subassembly and the rear wheel subassembly of frame bottom, its characterized in that: in a unfolded state, the frame comprises a bottom bracket, a push rod frame extending along the vertical direction, and a seat frame extending along the front-back direction, the front wheel assembly and the rear wheel assembly are arranged at the bottom of the bottom bracket, the lower part of the push rod frame is rotationally connected to the bottom bracket around a first rotation center line, a sliding piece is rotationally connected to the seat frame, the sliding piece can be relatively slidably arranged on the push rod frame along the length extension direction of the push rod frame, the frame further comprises a first connecting rod and a second connecting rod which respectively extend along the vertical direction, the first connecting rod is rotationally connected between the front part of the seat frame and the bottom bracket, the second connecting rod is rotationally connected between the rear part of the seat frame and the bottom bracket, the frame has a first use state and a second use state, when the frame is in the first use state, the push rod frame obliquely extends upwards from front to back, and the first connecting rod and the second connecting rod both obliquely extend upwards from front to back; when the frame is in the second use state, the push rod frame extends obliquely upwards from back to front, and the first connecting rod and the second connecting rod extend obliquely upwards from back to front.

2. The stroller of claim 1, wherein: the sliding part is connected with the seat frame in a rotating mode around a second rotating center line, the lower end portion of the first connecting rod and the lower end portion of the second connecting rod are connected to the bottom support in a rotating mode respectively, the upper end portion of the first connecting rod is connected to the seat frame in a rotating mode around a third rotating center line, the upper end portion of the second connecting rod is connected to the seat frame in a rotating mode around a fourth rotating center line, and the third rotating center line, the second rotating center line and the fourth rotating center line are parallel to each other and are arranged in sequence along the length direction of the seat frame.

3. The stroller of claim 2, wherein: the bottom bracket comprises a front bracket and a rear bracket, the front wheel assembly is arranged at the bottom of the front bracket, the rear wheel assembly is arranged at the bottom of the rear bracket, two of the upper part of the front bracket, the upper part of the rear bracket and the lower part of the push rod frame are rotationally connected, and the third one is rotationally connected with one of the two, or the upper part of the front bracket, the upper part of the rear bracket and the lower part of the push rod frame are rotationally connected together around the first rotation center line, the lower end part of the first connecting rod is rotationally connected to the front bracket, and the lower end part of the second connecting rod is rotationally connected to the rear bracket.

4. The stroller of claim 1, wherein: in the process that the frame is converted from the first use state to the second use state, the seat frame moves forwards from the first position to the second position in the front-rear direction.

5. The stroller of claim 1, wherein: the seat frame is provided with a sitting and standing supporting surface which extends backwards and downwards in a downward inclining mode, an included angle alpha is formed between the sitting and standing supporting surface and the horizontal plane, and the included angle alpha is increased in the process that the frame is converted from the first using state to the second using state.

6. The stroller of claim 5, wherein: when the frame is in an unfolded state, the sitting and standing supporting surface is always positioned above the first rotating center line along the vertical direction.

7. The stroller of claim 1, wherein: the push rod frame has and locates the left and right sides and respectively along two sets of push rods that the upper and lower direction extends, the seat frame sets up along the left and right sides between two sets of the push rod, the slider is including connecting with rotating respectively two sets of sliding sleeves of the seat frame left and right sides, two sets of sliding sleeve overlaps with sliding fit ground respectively and establishes on the push rod that corresponds the side.

8. The stroller of claim 1, wherein: the bottom support is arranged in a foldable mode, the frame is further provided with a folded state, and when the frame is in the folded state, the bottom support is folded, and the seat frame and the push rod are folded in the front portion of the bottom support.

9. The stroller of claim 8, wherein: the bottom bracket comprises a front bracket and a rear bracket, the front wheel assembly is arranged at the bottom of the front bracket, the rear wheel assembly is arranged at the bottom of the rear bracket, the upper part of the front bracket, the upper part of the rear bracket and the lower part of the push rod frame are jointly rotationally connected around the first rotation center line, the first connecting rod is rotationally connected between the front bracket and the seat frames, the second connecting rod is rotationally connected between the rear bracket and the seat frames, when the frame is in a folded state, the push rod frame, the front bracket and the rear bracket are folded in the front-back direction, and the seat frames are folded between the push rod frames and the front bracket.

Images