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CN-224225133-U - Baby carriage

CN224225133UCN 224225133 UCN224225133 UCN 224225133UCN-224225133-U

Abstract

The utility model belongs to the technical field of strollers, and particularly relates to a stroller. The baby carriage comprises a backrest, a headrest, a height adjusting mechanism, a gear shifting assembly and a linkage structure, wherein the headrest is arranged on the backrest, the height adjusting mechanism is arranged between the headrest and the backrest and comprises a gear shifting strip fixedly arranged on the backrest, the gear shifting strip extends in the vertical direction and is provided with a plurality of gear shifting grooves which are arranged at intervals in the vertical direction on the side face of the gear shifting strip, the gear shifting groove is arranged along a transverse opening, the gear shifting assembly is fixedly arranged on the headrest and is opposite to the gear shifting strip, the gear shifting assembly comprises a driving piece, the driving piece comprises a driving rod capable of moving in the vertical direction and a handle positioned on the outer side of the gear shifting assembly, and the linkage structure is connected between the driving rod and the telescopic piece. The utility model has the advantages of better durability and stronger positioning stability.

Inventors

  • ZHENG HUISHUANG

Assignees

  • 河北米奇龙儿童用品科技有限公司

Dates

Publication Date
20260512
Application Date
20250609

Claims (10)

  1. 1. A baby carriage, which comprises a carriage body and a plurality of carriages, characterized by comprising the following steps: A backrest; a headrest slidably mounted to an upper end of the backrest in a vertical direction of the backrest; the height adjustment mechanism sets up in between the headrest with the back, the height adjustment mechanism includes: The gear strip is fixedly arranged on one of the backrest and the headrest, extends along the vertical direction, is provided with a plurality of gear grooves which are arranged at intervals along the vertical direction on the side surface, and is arranged along the transverse opening; the gear shifting assembly is fixedly arranged on the other one of the headrest and the backrest and is arranged opposite to the gear shifting strip, and the gear shifting assembly comprises: the driving piece comprises a driving rod which can move vertically and a handle which is positioned at the outer side of the gear shifting assembly; a telescoping member elastically telescoping in the transverse direction; The linkage structure is connected between the driving rod and the telescopic piece; Under the natural state, the telescopic piece stretches out outwards under the action of elastic force and is inserted into the corresponding gear groove so as to lock the height of the headrest on the backrest; When the handle is operated to drive the driving rod to move vertically, the linkage structure converts the vertical motion of the driving rod into a transverse inward pulling force applied to the telescopic piece, so that the telescopic piece is forced to retract inwards to be separated from the gear groove against the elastic force, the locking of the headrest is released, and the headrest is allowed to slide vertically on the backrest to adjust the height.
  2. 2. The stroller of claim 1, wherein the linkage structure comprises: the first matching groove is formed in the driving rod and penetrates through the side part of the driving rod in the direction perpendicular to the axial direction of the driving rod; The second matching groove is formed in the telescopic piece, penetrates through the side part of the telescopic piece in the direction perpendicular to the axial direction of the telescopic piece, and the penetrating direction of the second matching groove is orthogonal to the penetrating direction of the first matching groove; The driving rod and the telescopic piece are vertically staggered by mutually nesting and matching the first matching groove and the second matching groove, the groove wall of the first matching groove and/or the groove wall of the second matching groove is provided with a transversely extending extrusion part, and when the driving rod moves in the vertical direction, the extrusion part can perform extrusion action with the opposite groove wall, so that the telescopic piece is forced to retract inwards in the transverse direction.
  3. 3. The stroller of claim 2, wherein the pressing portions are provided on both the groove wall of the first fitting groove and the groove wall of the second fitting groove, and the pressing portions are wedge-shaped blocks.
  4. 4. The stroller of claim 1, wherein the shift assembly is disposed on the headrest, a vertical chute extending vertically and a horizontal chute extending horizontally are disposed in the headrest, the vertical chute and the horizontal chute are communicated with each other, the driving rod is slidably disposed in the vertical chute, and the telescopic member is slidably disposed in the horizontal chute.
  5. 5. The stroller of claim 4, wherein a first elastic member is disposed in the vertical sliding groove, the first elastic member applies elastic force to the driving rod to enable the driving rod to reset, and a second elastic member is disposed in the horizontal sliding groove, and applies elastic force to the telescopic member, wherein the elastic force extends outwards.
  6. 6. The stroller of claim 5, wherein the vertical chute and the horizontal chute are respectively provided with a vertical abutting protrusion extending vertically and a horizontal abutting protrusion extending horizontally, the end of the first elastic piece is sleeved on the vertical abutting protrusion, and the end of the second elastic piece is sleeved on the horizontal abutting protrusion.
  7. 7. The baby carriage as claimed in claim 4, wherein the headrest is provided with a vertically extending limit groove, and the cross section of the limit groove is T-shaped or L-shaped; The backrest is fixedly provided with a transversely extending limiting piece, and the cross section of the limiting piece is correspondingly T-shaped or L-shaped and is slidably embedded in the limiting groove; The extending end part of the limiting piece forms the gear bar, and the gear bar is provided with a plurality of gear grooves; The transverse sliding groove is communicated with the limiting groove, so that the telescopic piece can extend into the limiting groove and is matched with the gear groove on the gear strip.
  8. 8. The stroller of claim 7, wherein the number of the limiting grooves is two and the limiting grooves are symmetrically arranged on two opposite sides of the headrest respectively; correspondingly, the number of the limiting parts is two, and the limiting parts are respectively fixed on two opposite sides of the backrest; The number of the telescopic pieces is two, the telescopic pieces are arranged in the transverse sliding groove at intervals along the vertical direction, and each telescopic piece extends into one limiting groove correspondingly; the linkage is configured to simultaneously drive the two telescoping members to retract laterally inward when the driving member is operated.
  9. 9. The stroller of any one of claims 1 to 8, wherein the opposite sides of the headrest are respectively provided with an adjustable headrest wing plate, and each headrest wing plate is rotatably connected with the main body of the headrest through a damping hinge; The two opposite sides of the backrest are respectively provided with an adjustable backrest wing plate, and each backrest wing plate is in rotary connection with the main body of the backrest through a damping hinge.
  10. 10. The stroller of any one of claims 1 to 8, wherein the stroller comprises a frame, and wherein an illumination lamp is provided at a bottom front end of the frame.

Description

Baby carriage Technical Field The utility model belongs to the technical field of strollers, and particularly relates to a stroller. Background The existing baby carriage is provided with a headrest height adjusting mechanism (as disclosed in CN 202420865033.1) so as to adapt to different requirements of babies on head supporting positions in the growing process, and the height adjustment is realized by arranging an elastically deformable clamping shaft and an adjusting rail with gear teeth between the headrest and the carriage. However, in general, the stroller needs to be used for 2-3 years (covering the period of 0 to 3 years of the infant), and during this long-term and frequent use, the engagement structure between the latch shaft and the gear teeth may repeatedly undergo cycles of friction, extrusion and elastic deformation, which easily causes two key problems, namely, on the one hand, loss of contact surface and increase of fit clearance due to mechanical wear, and on the other hand, plastic deformation or fatigue relaxation of the latch shaft may occur, so as to weaken the restoring force thereof. The accumulation of these problems causes deterioration of the performance of the adjustment mechanism, which is manifested by firstly failure (loosening) of the engagement, which is manifested by the headrest not being effectively locked after adjustment, and easy unexpected sliding or sagging when pushing or infant movement, and secondly misalignment (inaccurate adjustment), which causes micro-displacement when the infant leans against or the like due to increased clearance or insufficient clamping force even without obvious sliding, so that the actual support height of the headrest deviates from the preset gear, and the infant requirement cannot be accurately adapted. Disclosure of utility model In order to solve the defects in the prior art, the baby carriage is better in durability and stronger in positioning stability. The utility model adopts the following technical scheme that the baby carriage comprises: A backrest; a headrest slidably mounted to an upper end of the backrest in a vertical direction of the backrest; the height adjustment mechanism sets up in between the headrest with the back, the height adjustment mechanism includes: The gear strip is fixedly arranged on one of the backrest and the headrest, extends along the vertical direction, is provided with a plurality of gear grooves which are arranged at intervals along the vertical direction on the side surface, and is arranged along the transverse opening; the gear shifting assembly is fixedly arranged on the other one of the headrest and the backrest and is arranged opposite to the gear shifting strip, and the gear shifting assembly comprises: the driving piece comprises a driving rod which can move vertically and a handle which is positioned at the outer side of the gear shifting assembly; a telescoping member elastically telescoping in the transverse direction; The linkage structure is connected between the driving rod and the telescopic piece; Under the natural state, the telescopic piece stretches out outwards under the action of elastic force and is inserted into the corresponding gear groove so as to lock the height of the headrest on the backrest; When the handle is operated to drive the driving rod to move vertically, the linkage structure converts the vertical motion of the driving rod into a transverse inward pulling force applied to the telescopic piece, so that the telescopic piece is forced to retract inwards to be separated from the gear groove against the elastic force, the locking of the headrest is released, and the headrest is allowed to slide vertically on the backrest to adjust the height. When the headrest is used, a user can push or pull the handle to enable the driving rod of the driving piece to vertically move, so that the telescopic piece is retracted inwards to be separated from the gear groove, the vertical position of the headrest can be moved, the handle can be loosened when the headrest is adjusted to a proper height, and the telescopic piece can be extended outwards to reset and be inserted into the corresponding gear groove under the action of elastic force, so that the headrest is locked at the current position on the backrest. The locking mode that the telescopic piece directly stretches into the gear groove is adopted in the scheme, compared with an existing elastic clamping shaft structure, the mechanical abrasion in the operation process is remarkably reduced. The telescopic piece is not easy to generate plastic deformation in the telescopic action, and has stronger deformation resistance. Therefore, even after the stroller is repeatedly adjusted within a service period of up to two years, the height adjusting mechanism can still effectively maintain the initial locking effect and positioning accuracy, and the overall stroller has more excellent long-term durability and running stability. The linkag