CN112009554B

CN112009554B - Child cart

Info

Publication number: CN112009554B
Application number: CN202010884166.XA
Authority: CN
Inventors: 高翔; 陈健
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2024-11-29
Anticipated expiration: 2040-08-28
Also published as: CN112009554A

Abstract

The invention discloses a foldable stroller, which comprises a first rod piece, a second rod piece and a third rod piece, wherein the first rod piece, the second rod piece and the third rod piece are rotationally connected through a rotary joint, the rotary joint comprises a first rotary part arranged at one end part of the first rod piece, a second rotary part arranged at one end part of the second rod piece and a third rotary part arranged at one end part of the third rod piece, the first rotary part and the second rotary part are rotationally connected around a first rotary shaft, and the second rotary part and the third rotary part are rotationally connected around a second rotary shaft. In the folding process of the frame, the first rod piece rotates around the first rotating shaft and is folded towards the second rod piece, and the third rod piece is linked to rotate around the second rotating shaft and is folded towards the second rod piece. According to the child stroller, the three supports are connected at the rotary joints in a rotary mode, the folding of the stroller frame is achieved, the folding structure is simple, each rod piece of the stroller frame after folding is compact, the occupied space of the whole stroller is small, and the stroller is convenient to carry and store.

Description

Child cart

Technical Field

The invention relates to a child stroller.

Background

In the existing foldable baby carriage, folding mechanisms are different from each other, and most of the foldable baby carriage has the problems of complex folding structure, large volume after folding and the like, and brings inconvenience to production and use.

Disclosure of Invention

The invention aims to provide a child stroller with a simple folding structure and a small folding volume.

In order to achieve the above purpose, the invention adopts the following technical scheme:

The child stroller comprises a stroller frame, wherein the stroller frame is provided with two side brackets which are respectively arranged at the left side and the right side, the stroller frame is provided with an unfolding state and a folding state, each side bracket comprises a first rod piece, a second rod piece and a third rod piece which are mutually connected in a rotating way through a rotating joint, the rotating joint comprises a first rotating part arranged at the lower end part of the first rod piece, a second rotating part arranged at the upper end part of the second rod piece and a third rotating part arranged at the upper end part of the third rod piece, the first rotating part is connected with the second rotating part in a rotating way around a first rotating shaft, the second rotating part is connected with the third rotating part in a rotating way around a second rotating shaft, and the axis of the first rotating shaft is parallel to the axis of the second rotating shaft;

the second rotating part is provided with a circular arc-shaped first chute with the center of the circle on the axis of the first rotating shaft, the first rotating part is fixedly provided with a pin shaft with the axis parallel to the axis of the first rotating shaft, and the pin shaft is inserted in the first chute in a matched manner and is in sliding connection with the first chute;

The third rotating part is provided with a second sliding groove, the front end of the second sliding groove is provided with a front limiting part, the second sliding groove and the first sliding groove are provided with an overlapping part, the pin shaft is simultaneously inserted into and slidingly connected with the first sliding groove and the second sliding groove, and the sliding distance of the pin shaft in the second sliding groove is smaller than the sliding distance of the pin shaft in the first sliding groove;

When the frame is converted from the unfolding state to the folding state, the first rod piece rotates around the first rotating shaft and is folded towards the second rod piece, and the pin shaft is propped against the front limiting part and pushes the third rod piece to rotate around the second rotating shaft and is folded towards the second rod piece;

The stroller further includes a locking mechanism that locks the frame in the deployed state.

Preferably, the front limiting part of the second sliding groove is provided with a section of straight sliding groove extending downwards, and when the pin shaft abuts against the front limiting part and pushes the third rod piece to rotate around the second rotating shaft and fold towards the second rod piece, the pin shaft slides downwards along the straight sliding groove.

Preferably, when the frame is in the unfolded state, the first rotating shaft is located below the second rotating shaft.

Preferably, in the rotary joint on each side, the second rotating part has two pieces arranged in parallel, the first rotating part also has two pieces arranged in parallel, one of the second rotating parts is inserted between the two pieces of the first rotating part, and the third rotating part is located at the innermost side of the rotary joint.

Preferably, the rear end of the second sliding groove is provided with a rear limiting part, and when the frame is in a unfolding state, the pin shaft is propped against the rear limiting part.

Preferably, the first rod is a push rod, the second rod is a front support with a front wheel at the bottom, and the third rod is a rear support with a rear wheel at the bottom.

Preferably, the locking mechanism includes a lock pin slidably provided on the first rotating portion, a lock groove provided on the second rotating portion and into which the lock pin is fittingly inserted, and an elastic member for providing a force required for sliding the lock pin toward the lock groove, the lock pin being inserted into the lock groove when the locking mechanism is in a locked state.

Preferably, the sliding direction of the lock pin is perpendicular to the first rotation axis.

Preferably, the first rod member comprises an upper rod and a lower rod, the upper rod and the lower rod are rotatably connected around a third rotating shaft, a flexible traction rope is arranged in the lower rod, one end of the traction rope is connected with the lock pin, and the other end of the traction rope is connected with the upper rod.

Preferably, a traction wheel taking the third rotating shaft as a rotating shaft center is fixed on the upper rod, and the traction rope is wound and fixed on the traction wheel.

The terms of directions such as up and down, left and right, front and back, inside and outside and the like related to the invention are defined according to the up and down, left and right, front and back, inside and outside directions of a child when the child takes the child stroller.

Compared with the prior art, the child stroller has the advantages that the first rod piece, the second rod piece and the third rod piece are connected through the rotation of the rotary joint, so that the first rod piece can drive the third rod piece to rotate and close relative to the second rod piece when the first rod piece rotates relative to the second rod piece, the folding is simpler and more convenient, the frame is compact after the structure is simple and folded, the occupied space of the whole stroller is small, and the carrying and the storage are convenient.

Drawings

FIG. 1 is a schematic perspective view of a child stroller in an expanded state (with the outer shell of the revolute joint at A omitted);

FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;

FIG. 3 is a right side view of the child stroller in the unfolded state of the present embodiment;

fig. 4 is a schematic perspective view of the middle of the stroller in this embodiment;

FIG. 5 is a right side view of the push rod and rear bracket of FIG. 4;

fig. 6 is a schematic perspective view of the middle of the stroller in this embodiment;

fig. 7 is a right side view of the child stroller in the middle of the present embodiment;

FIG. 8 is a block diagram of the pushrod and rear bracket of FIG. 7;

fig. 9 is a schematic perspective view of the stroller in a folded state in the present embodiment;

Fig. 10 is a right side view of the child stroller in a folded state in the present embodiment;

FIG. 11 is a block diagram of the pushrod and rear bracket of FIG. 10;

Fig. 12 is a partially enlarged exploded view of the rotary joint in the present embodiment;

fig. 13 is a partially enlarged right side view of the revolute joint in the unfolded state according to the present embodiment;

FIG. 14 is a cross-sectional view B-B of FIG. 13;

Fig. 15 is a right side view of the front bracket in the present embodiment;

Fig. 16 is a right side view of the rear bracket in the present embodiment;

FIG. 17 is a right side view of the push rod in the present embodiment;

The device comprises a push rod 1, a push rod 11, an upper rod 12, a lower rod 13, a push rod unlocking button 2, a front bracket 21, a front wheel 3, a rear bracket 31, a rear wheel 4, a rotary joint 41, a first rotating part 411, a pin shaft 412, a locking groove 42, a second rotating part 421, a first sliding groove 422, a locking groove 43, a third rotating part 431, a second sliding groove 432, a front limiting part 433, a rear limiting part 44, a rotary joint shell, an M, a first rotating shaft, an N, a second rotating shaft, a P and a third rotating shaft.

Detailed Description

The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.

As shown in fig. 1 and 9, a stroller comprises a frame having an unfolded state and a folded state, the frame has two side brackets respectively disposed at left and right sides, each side bracket includes a first rod member, a second rod member and a third rod member which are rotatably connected with each other by a rotary joint 4, in this embodiment, the first rod member, the second rod member and the third rod member are respectively a push rod 1, a front bracket 2 with a front wheel 21 at the bottom front portion and a rear bracket 3 with a rear wheel 31 at the bottom rear portion, each push rod 1 further includes an upper rod 11 and a lower rod 12, and the upper rod 11 and the lower rod 12 are rotatably connected around a third rotation axis P.

As shown in fig. 2, the rotary joint 4 comprises a first rotary part 41 arranged at the lower end part of the push rod 1, a second rotary part 42 arranged at the upper end part of the front bracket 2, a third rotary part 43 arranged at the upper end part of the rear bracket 3, and a rotary joint shell 44 sleeved outside, wherein the first rotary part 41 and the second rotary part 42 are rotationally connected around a first rotary shaft M, the second rotary part 42 and the third rotary part 43 are rotationally connected around a second rotary shaft N, and the axial lead of the first rotary shaft M is parallel to the axial lead of the second rotary shaft N.

As shown in fig. 2, 12, 15 and 17, the second rotating portion 42 is provided with a circular arc-shaped first chute 421 with a center located on the axis of the first rotating shaft M, the first rotating portion 41 is fixed with a pin 411 with an axis parallel to the axis of the first rotating shaft M, and the pin 411 is cooperatively inserted into the first chute 421 and slidably connected with the first chute 421.

As shown in fig. 12, 16 and 17, the third rotating portion 43 is provided with a second chute 431, and front and rear ends of the second chute 431 are respectively provided with a front limiting portion 432 and a rear limiting portion 433, and the front limiting portion 432 is further provided with a section of straight chute extending downward. The second sliding groove 431 and the first sliding groove 421 have an overlapping portion, the pin 411 is simultaneously inserted into the first sliding groove 421 and the second sliding groove 431 and is slidably connected with the first sliding groove 421 and the second sliding groove 431, and the sliding distance of the pin 411 in the second sliding groove 431 is smaller than the sliding distance of the pin 411 in the first sliding groove 421.

As shown in fig. 14, in each side of the rotary joint 4, the second rotary part 42 has two pieces arranged in parallel, the first rotary part 41 also has two pieces arranged in parallel, one of the second rotary parts 42 is interposed between the two first rotary parts 41, and the third rotary part 43 is located at the innermost side of the rotary joint 4, and the pin 411 passes through the entire rotary joint 4.

As shown in fig. 2, 12, 15 and 17, the stroller further includes a locking mechanism that locks the frame in the deployed state. The locking mechanism includes a lock pin 412 slidably provided on the first rotating portion 41, a lock groove 422 provided on the second rotating portion 42 and into which the lock pin 412 is fittingly inserted, and an elastic member (not shown) for providing an elastic force required for sliding the lock pin 412 toward the lock groove 422. The sliding direction of the lock pin 412 is perpendicular to the first rotation axis M, and the lock pin 412 is inserted in the lock groove 422 when the lock mechanism is in the locked state.

In addition, the stroller in this embodiment further includes an unlocking mechanism that unlocks the frame from the locked state. As shown in fig. 4, the unlocking mechanism includes a push rod unlocking button 13 provided on the upper rod 11, a flexible traction cable (not shown) provided in the lower rod 12, and a traction wheel (not shown) fixed on the upper rod 11 and having the third rotation axis P as a rotation axis, one end of the traction cable is connected to a lock pin 412, and the other end is wound around and fixed on the traction wheel. The push rod unlocking mechanism is not specifically the technical key point to be protected in the patent, and the structure in the prior art can be adopted.

As shown in fig. 1 and 2, when the frame of the stroller of the present embodiment is in a unfolded state, the first rotating shaft M is located below the second rotating shaft N, and the pin 411 abuts against the rear limiting portion 433 of the second chute 431.

As shown in fig. 4 and 5, when the child stroller needs to be folded, the push rod unlocking button 13 is pressed first, so that the upper rod 11 can rotate around the third rotation axis P relative to the lower rod 12, and in the process that the upper rod 11 rotates and approaches the lower rod 12, the traction wheel in the upper rod 11 is driven to rotate around the third rotation axis P, so that the traction rope is pulled to pull the lock pin 412, the lock pin 412 is withdrawn from the locking groove 422, and the locking mechanism is unlocked, so that a plurality of rods connected through the rotation joint 4 can be relatively rotated and folded.

As shown in fig. 6 to 8, the child stroller is further folded, the push rod 1 is pushed down to rotate around the first rotation axis M and close to the front bracket 2 and the rear bracket 3, the pin shaft 411 slides forward along the first sliding groove 421 and the second sliding groove 431, and in this process, no relative rotation exists between the front bracket 2 and the rear bracket 3 until the pin shaft 411 slides to the front limiting portion 432 of the second sliding groove 431.

As shown in fig. 9 to 11, the push rod 1 is continuously pressed down, the pin shaft 411 abuts against the front limiting portion 432 and pushes the rear bracket 3 to rotate around the second rotating shaft N and fold toward the front bracket 2, and in this process, the pin shaft 411 slides down along the straight sliding groove at the front limiting portion 432. The final folding state of the frame is shown in fig. 9, the push rod 1, the front bracket 2 and the rear bracket 3 are compactly folded together, and the whole frame is small in folding volume and convenient to carry and store.

When the stroller in this embodiment is changed from the folded state to the unfolded state, the above steps are reversed, i.e. the push rod 1 is pulled up to rotate around the first rotation axis M, the pin shaft 411 slides backward along the first slide groove 421 and the second slide groove 431, when the pin shaft 411 slides to the rear limit part 433 of the second slide groove 431, the push rod 1 is pulled up continuously, the pin shaft 411 abuts against the rear limit part 433 and pushes the rear bracket 3 to rotate around the second rotation axis N and separate from the front bracket 2, until the rear bracket 3 and the front bracket 2 are completely unfolded, the lock pin 412 on the first rotation part 41 rotates to the lock groove 422, and then the upper rod 11 rotates and unfolds around the third rotation axis P, so that the lock pin 412 is slid into the lock groove 422 under the driving of the elastic member, and the stroller frame is locked in the unfolded state.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The utility model provides a children's shallow, includes the frame, the frame has two side brackets of locating the left and right sides separately, the frame has expansion state and folding state, every side bracket all includes first member, second member and the third member of being connected through the mutual rotation of revolute joint, its characterized in that:

The rotary joint comprises a first rotary part arranged at one end part of the first rod piece, a second rotary part arranged at one end part of the second rod piece and a third rotary part arranged at one end part of the third rod piece, wherein the first rotary part and the second rotary part are rotationally connected around a first rotary shaft, the second rotary part and the third rotary part are rotationally connected around a second rotary shaft, and the axial lead of the first rotary shaft is parallel to the axial lead of the second rotary shaft;

the third rotating part is provided with a second sliding groove, the front end of the second sliding groove is provided with a front limiting part, the second sliding groove and the first sliding groove are provided with an overlapping part, the pin shaft is simultaneously inserted into the first sliding groove and the second sliding groove and is in sliding connection with the first sliding groove and the second sliding groove, the sliding distance of the pin shaft in the second sliding groove is smaller than the sliding distance of the pin shaft in the first sliding groove, the rear end of the second sliding groove is provided with a rear limiting part, and when the frame is in a unfolding state, the pin shaft is propped against the rear limiting part;

2. The stroller of claim 1, wherein the front limiting portion of the second sliding slot has a straight sliding slot extending downward, and the pin slides downward along the straight sliding slot when the pin abuts against the front limiting portion and pushes the third rod to rotate around the second rotating shaft and retract toward the second rod.

3. The stroller of claim 1, wherein the first pivot is positioned below the second pivot when the frame is in the deployed state.

4. The stroller of claim 1, wherein the second rotating portion has two pieces arranged in parallel in each side of the rotating joint, the first rotating portion also has two pieces arranged in parallel, one of the second rotating portions is inserted between the two first rotating portions, and the third rotating portion is located at an innermost side of the rotating joint.

5. The stroller of any one of claims 1 to 4, wherein the first rod is a push rod, the second rod is a front bracket with a front wheel at the bottom, and the third rod is a rear bracket with a rear wheel at the bottom.

6. The stroller of claim 5, wherein the locking mechanism comprises a locking pin slidably disposed on the first rotating portion, a locking groove disposed on the second rotating portion and into which the locking pin is fittingly inserted, and an elastic member for providing a force required for sliding the locking pin toward the locking groove, the locking pin being inserted into the locking groove when the locking mechanism is in a locked state.

7. The stroller of claim 6, wherein the locking pin slides in a direction perpendicular to the first pivot axis.

8. The stroller of claim 7, wherein the first rod comprises an upper rod and a lower rod, the upper rod and the lower rod are rotatably connected around a third rotating shaft, a flexible traction cable is arranged in the lower rod, one end of the traction cable is connected with the lock pin, and the other end of the traction cable is connected with the upper rod.

9. The stroller of claim 8, wherein the upper rod is fixed with a traction wheel with the third rotating shaft as a rotating shaft center, and the traction rope is wound around and fixed on the traction wheel.