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CN-122009304-A - Folding and unfolding structure of child stroller

CN122009304ACN 122009304 ACN122009304 ACN 122009304ACN-122009304-A

Abstract

The invention discloses a folding and unfolding structure of a child stroller, which comprises a back plate, a seat plate, a handle resetting piece, a rotating limiting piece, a back plate locking mechanism, a shifting piece and a handle linkage mechanism, wherein the end parts of the back plate, the seat plate and the handle are in rotary connection, the back plate locking mechanism is arranged between the back plate and the seat plate, the shifting piece is arranged on the back plate, the handle locking mechanism and the handle linkage mechanism are arranged between the handle resetting piece and the handle and between the seat plate, and the seat plate locking mechanism is arranged between the seat plate and the rotating limiting piece. This design only needs to stir the plectrum and can rotate the backplate downwards and fold, backplate downwardly rotating folding unblock handle locking mechanism, bedplate locking mechanism, and the handle is folding through handle link gear linkage, and upward rotation drives handle and bedplate in proper order and expands and form the joint when the backplate expands, and the connectivity is stronger, need not extra operation unblock, rotates handle and bedplate, convenient to use, easy operation.

Inventors

  • WANG LIUYANG

Assignees

  • 浙江夕尔科技有限公司

Dates

Publication Date
20260512
Application Date
20260121

Claims (10)

  1. 1. The folding and unfolding structure of the children cart comprises a back plate, a seat plate and handles arranged between the back plate and the seat plate, wherein the end parts of the back plate, the seat plate and the handles are rotationally connected, the back plate, the seat plate and the handles can be folded or unfolded in a rotating mode, The handle resetting piece is arranged on the backboard and synchronously moves along with the backboard, and the rotary fixing piece is locked on the seat board, and the rotary fixing piece, the backboard, the seat board, the handle resetting piece and the handle are sequentially and coaxially connected in a rotary manner from outside to inside; A backboard locking mechanism is arranged between the backboard and the seat board, a poking plate is arranged on the backboard, and the poking plate is movably used for unlocking the backboard locking mechanism through a pull rope and is used for rotating and folding the backboard; A handle locking mechanism is arranged between the handle resetting piece and the handles and seat boards positioned on two sides, the handles are locked through the handle locking mechanism, and the handle resetting piece rotates to unlock the locking state of the handle locking mechanism for rotating and folding the handles; A handle linkage mechanism is further arranged between the handle resetting piece and the handles and seat boards positioned at the two sides, and is used for linking the movement of the handles and the handle resetting piece, and the seat boards drive the handles to synchronously unfold or fold through the handle linkage mechanism when unfolding or folding; And a seat plate locking mechanism is arranged between the seat plate and the rotary fixing piece, the seat plate is locked with the rotary fixing piece through the seat plate locking mechanism to limit the rotation of the seat plate, and the backboard rotates downwards to link the seat plate locking mechanism to unlock the seat plate for rotating and folding the seat plate.
  2. 2. The folding and unfolding apparatus of a stroller of claim 1, wherein the handle lock mechanism comprises a handle bayonet lock stopper fixed in the handle, a handle bayonet lock movably mounted on the handle bayonet lock stopper, and a shaft post on the seat plate and passing through the handle, the handle bayonet lock stopper and the handle bayonet lock are rotated in synchronization with the handle, and the handle is locked by the locking of the handle bayonet lock and the shaft post.
  3. 3. The folding and unfolding structure of the stroller of claim 2, wherein the axle post is provided with a handle bayonet lock fixing groove, the handle resetting piece is provided with a boss, the boss is in annular fit with the outer edge of the axle post, the handle bayonet lock is fixed in the handle bayonet lock fixing groove when the back plate is unfolded and used for limiting the rotation of the handle, the handle resetting piece gradually pushes the handle bayonet lock to move towards the handle bayonet lock limiting piece through the boss when the back plate rotates downwards to fold, and the handle bayonet lock is separated from the handle bayonet lock fixing groove and used for releasing the locking state of the handle, and the handle bayonet lock is reset through the resilience force of the spring.
  4. 4. The folding and unfolding apparatus of a stroller of claim 2, wherein the handle linkage includes an upper annular groove on the handle return member, a lower annular groove on the seat plate corresponding to the upper annular groove, and a movable paddle in the upper annular groove, and the movable paddle drives the handle to rotate and engage with the handle.
  5. 5. The folding and unfolding structure of the stroller of claim 4, wherein the movable pulling piece end is provided with a clamping hook, and the handle clamping pin limiting piece is provided with a clamping block for adapting to the clamping hook; When the handle is folded, the backboard drives the handle resetting piece to rotate downwards, the locking state of the handle is released, the clamping hook touches the upper part of the clamping block, the clamping hook is continuously rotated downwards to drive the clamping block to move for linking the folding of the handle, and the handle is matched with the clamping block to form and be fixed; When the handle is unfolded, the backboard is rotated downwards firstly, the clamping block extrudes the clamping hook to enable the movable pulling piece to move to the lower annular groove, the clamping hook is separated from the clamping block, the clamping hook is continuously rotated downwards to drive the clamping hook to move to the lower part of the clamping block, the movable pulling piece resets through self resilience force to drive the clamping hook to be attached to the lower part of the clamping block, then the backboard is rotated upwards, the clamping hook drives the clamping block to move upwards to be interlocked with the unfolding of the handle, the handle clamping pin is clamped into the handle pin fixing groove, then the backboard is rotated upwards, the movable pulling piece on the handle resetting piece deforms through the space of the lower annular groove, the clamping hook is separated from the clamping block, the backboard is continuously pulled upwards, and the seat board and the backboard are reset in sequence to form the clamping connection.
  6. 6. The folding and unfolding structure of the stroller of claim 1, wherein the backboard locking mechanism comprises a plurality of latch grooves distributed annularly at the end part of the seat board and backboard latches arranged in the backboard, the latch grooves are positioned on one side of the seat board close to the backboard, the backboard latches are inserted into the latch grooves and used for locking the backboard, the pulling rope drives the backboard latches to move away from the latch grooves and used for unlocking the backboard, and the backboard latches are buckled into the latch grooves again through resilience force of the springs after moving.
  7. 7. The folding and unfolding structure of the stroller of claim 1, wherein the seat plate locking mechanism comprises a mounting groove close to one side of the back plate, a rotation limiting member which is assembled in the mounting groove and can transversely move, and a spring positioned between the mounting groove and the rotation limiting member, wherein the mounting groove is matched with the contour of the rotation limiting member to limit the rotation of the rotation limiting member, and the rotation limiting member passes through the back plate to form a clamping connection with the rotation fixing member to limit the rotation of the seat plate.
  8. 8. The folding and unfolding structure of the stroller of claim 7, wherein the rotation limiting member is provided with a convex buckle, the rotation fixing member is provided with a clamping groove for adapting to the buckle, and the transverse movement of the rotation fixing member drives the buckle to be separated from the clamping groove to realize unlocking.
  9. 9. The folding and unfolding structure of the stroller of claim 8, wherein the rotating limiting piece bosses are arranged on two sides of the rotating limiting piece, the backboard bosses are arranged on two sides of the backboard, the inclined guide surfaces are arranged on two sides of the backboard bosses, the inclined guide surfaces are arranged on two sides of the rotating limiting piece bosses, the backboard bosses rotate along with the inclined guide surfaces when the backboard rotates, the guide surfaces on the backboard bosses gradually move along the guide surfaces, the backboard bosses rotate to the lower part of the rotating limiting piece bosses and jack up the rotating limiting piece, the transverse movement of the rotating limiting piece is realized, the rotating limiting piece drives the buckle to be separated from the clamping groove, and the locking of the seat plate is released.
  10. 10. The folding and unfolding apparatus of claim 1, wherein the front end of the seat plate is provided with an extension plate, and the extension plate is rotatably connected to the seat plate.

Description

Folding and unfolding structure of child stroller Technical Field The invention relates to the technical field of child carts, in particular to a folding and unfolding structure of a child cart. Background For a baby at birth, the baby cannot walk independently, usually needs to be held by a family member when going out, but the baby can not be tolerated by the hands holding the baby for a long time, and in order to liberate the hands of the baby, a baby trolley is usually purchased, and the baby is put on the baby trolley to be taken out. In order to prevent babies from falling off, handles are usually arranged on the baby carriage. The child cart is large in size, occupies a large space when not used, is convenient for accommodating, is invented on the market, and is convenient for a user to carry or accommodate when going out, and the size of the child cart is reduced after folding. The existing child stroller is troublesome in folding operation, the handles and the seats lack of linkage structures, the seats and the backboard are required to be operated when unfolded or folded, the handles are required to be operated, and convenience is general. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a folding and unfolding structure of a child stroller. In order to solve the technical problems, the invention provides the following technical scheme. A folding and unfolding structure of a children cart comprises a back plate, a seat plate and a handle arranged between the back plate and the seat plate, wherein the end parts of the back plate, the seat plate and the handle are rotationally connected, the back plate, the seat plate and the handle can be folded or unfolded in a rotating mode, The handle resetting piece is arranged on the backboard and synchronously moves along with the backboard, and the rotary fixing piece is locked on the seat board, and the rotary fixing piece, the backboard, the seat board, the handle resetting piece and the handle are sequentially and coaxially connected in a rotary manner from outside to inside; A backboard locking mechanism is arranged between the backboard and the seat board, a poking plate is arranged on the backboard, and the poking plate is movably used for unlocking the backboard locking mechanism through a pull rope and is used for rotating and folding the backboard; A handle locking mechanism is arranged between the handle resetting piece and the handles and seat boards positioned on two sides, the handles are locked through the handle locking mechanism, and the handle resetting piece rotates to unlock the locking state of the handle locking mechanism for rotating and folding the handles; A handle linkage mechanism is further arranged between the handle resetting piece and the handles and seat boards positioned at the two sides, and is used for linking the movement of the handles and the handle resetting piece, and the seat boards drive the handles to synchronously unfold or fold through the handle linkage mechanism when unfolding or folding; And a seat plate locking mechanism is arranged between the seat plate and the rotary fixing piece, the seat plate is locked with the rotary fixing piece through the seat plate locking mechanism to limit the rotation of the seat plate, and the backboard rotates downwards to link the seat plate locking mechanism to unlock the seat plate for rotating and folding the seat plate. Further, the handle locking mechanism comprises a handle bayonet lock limiting piece fixed in the handle, a handle bayonet lock movably installed on the handle bayonet lock limiting piece and a shaft column located on the seat plate and penetrating through the handle, wherein the handle bayonet lock limiting piece and the handle bayonet lock synchronously rotate along with the handle, and the handle is locked through the buckling of the handle bayonet lock and the shaft column. Further, a handle bayonet lock fixing groove is formed in the shaft column, a boss is arranged on the handle reset piece and is in annular fit with the outer edge of the shaft column, the handle bayonet lock is fixed in the handle bayonet lock fixing groove when the back plate is unfolded and used for limiting rotation of a handle, when the handle reset piece is folded along with the downward rotation of the back plate, the handle bayonet lock is gradually pushed to move towards the handle bayonet lock limiting piece through the boss, the handle bayonet lock is separated from the handle bayonet lock fixing groove and used for releasing a locking state of the handle, and the handle bayonet lock is reset through resilience force of a spring. Further, the handle linkage mechanism comprises an upper annular groove positioned on the handle resetting piece, a lower annular groove corresponding to the upper annular groove on the seat plate and a movable pulling piece positioned in the upper annular groove, and the movable pulling piece drives