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US-12617447-B2 - Wheel braking mechanism, frame, and child carrier

US12617447B2US 12617447 B2US12617447 B2US 12617447B2US-12617447-B2

Abstract

The present application relates to a wheel braking mechanism, a frame and a child carrier. The wheel braking mechanism includes a wheel base housing assembly, a braking assembly mounted in the wheel base housing assembly, and a braking pin connected to the braking assembly. A side wall of the wheel base housing assembly is provided with a sliding hole configured to allow the braking pin to extend through. The braking pin is capable of sliding in the sliding hole between a locking position and an unlocking position. The wheel braking mechanism further includes a dust shield. The dust shield is engaged with the braking pin and shields the sliding hole to prevent external debris from entering an interior of the wheel base housing assembly through the sliding hole.

Inventors

  • Xiaolong Yi

Assignees

  • WONDERLAND SWITZERLAND AG

Dates

Publication Date
20260505
Application Date
20230303
Priority Date
20220303

Claims (20)

  1. 1 . A wheel braking mechanism, comprising: a wheel base housing assembly, a side wall of the wheel base housing assembly being provided with a sliding hole; a braking assembly mounted in the wheel base housing assembly; a braking pin connected to the braking assembly, the braking pin being configured to slide in the sliding hole between a locking position and an unlocking position; and a dust shield engaged with the braking pin; wherein when the braking pin slides in the sliding hole to the locking position and the unlocking position, the dust shield shields an entirety of the sliding hole.
  2. 2 . The wheel braking mechanism according to claim 1 , wherein the dust shield is movably connected to the wheel base housing assembly.
  3. 3 . The wheel braking mechanism according to claim 1 , wherein the dust shield shields the entirety of the sliding hole outside the side wall.
  4. 4 . The wheel braking mechanism according to claim 1 , wherein the dust shield is provided with a through hole, the braking pin extends through the through hole.
  5. 5 . The wheel braking mechanism according to claim 1 , wherein the dust shield is pivotally connected to the side wall through a pivot shaft, one of the dust shield and the side wall is provided with an adjusting hole, the pivot shaft extends through the adjusting hole.
  6. 6 . The wheel braking mechanism according to claim 5 , wherein the sliding hole and the adjusting hole are both slotted holes.
  7. 7 . The wheel braking mechanism according to claim 5 , wherein the pivot shaft is formed by a boss protruding outward from the side wall, and the adjusting hole is provided on the dust shield.
  8. 8 . The wheel braking mechanism according to claim 5 , wherein a threaded hole is provided on an end surface of the pivot shaft, the wheel braking mechanism further comprises a fastener, and a tail portion of the fastener is threadedly engaged in the threaded hole.
  9. 9 . The wheel braking mechanism according to claim 8 , wherein when the pivot shaft slides relative to the adjusting hole, a head portion of the fastener shields the adjusting hole.
  10. 10 . The wheel braking mechanism according to claim 5 , wherein the dust shield is substantially fan-shaped and is provided with a through hole, the braking pin extends through the through hole, the adjusting hole and the through hole are located at a center of the dust shield, and the through-hole is located closer to a curved outer edge of the dust shield than the adjusting hole.
  11. 11 . The wheel braking mechanism according to claim 5 , wherein one of the side wall and the dust shield is provided with the adjusting hole, and the other one thereof is provided with a connecting hole, the pivot shaft extends through the adjusting hole and the connecting hole.
  12. 12 . The wheel braking mechanism according to claim 11 , wherein the adjusting hole is provided on the dust shield, the connecting hole is provided on the side wall, a tail portion of the pivot shaft extends through the adjusting hole and is engaged in the connecting hole.
  13. 13 . The wheel braking mechanism according to claim 12 , wherein when the pivot shaft slides relative to the adjusting hole, a head portion of the pivot shaft shields the adjusting hole.
  14. 14 . The wheel braking mechanism according to claim 11 , wherein the adjusting hole is provided on the side wall, the connecting hole is provided on the dust shield, a tail portion of the pivot shaft extends through the adjusting hole and the connecting hole sequentially from an inside of the wheel housing assembly.
  15. 15 . The wheel braking mechanism according to claim 14 , wherein when the pivot shaft slides relative to the adjusting hole, the dust shield shields the adjusting hole.
  16. 16 . The wheel braking mechanism according to claim 14 , wherein an extending direction of the adjusting hole and an extending direction of the sliding hole are perpendicular to each other.
  17. 17 . The wheel braking mechanism according to claim 5 , wherein a step portion is provided in the adjusting hole, a head portion of the pivot shaft abuts against the step portion.
  18. 18 . The wheel braking mechanism according to claim 17 , wherein the head portion is completely located in the adjustment hole.
  19. 19 . The wheel braking mechanism according to claim 1 , wherein a bottom of the wheel base housing assembly is provided with a mounting opening, and the wheel braking mechanism further comprises a dust-proof cover configured to seal the mounting opening.
  20. 20 . A frame, comprising: the wheel braking mechanism according to claim 1 ; a leg connected to the wheel base housing assembly; and a wheel, wherein a wheel shaft of the wheel is connected to the wheel base housing assembly, a wheel hub of the wheel is circumferentially provided with a plurality of locking grooves, when the braking pin slides to the locking position, the braking pin is snapped into one of the locking grooves, and when the braking pin slides to the unlocking position, the braking pin is retracted from the locking groove.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority of Chinese Patent Application No. 2022102030985, filed on Mar. 3, 2022, the content of which is hereby incorporated by reference in its entirety. TECHNICAL FIELD The present application relates to a wheel braking mechanism, a frame, and a child carrier. BACKGROUND FIG. 1 is a partial structure of a frame of a baby carrier. A leg 200 of the frame is provided with a wheel braking mechanism 300, a driving member 310 of the wheel braking mechanism 300 is stepped on by a user with foot, a braking pin (not shown in the figure) of the wheel braking mechanism 300 can be moved to a locking position for locking a wheel 400 of the baby carrier, thereby preventing the baby carrier from moving accidentally and improving a safety of the baby carrier. When the user lifts the driving member 310 of the wheel braking mechanism 300, the braking pin of the wheel braking mechanism 300 can move to an unlocking position for unlocking the wheel 400, and the baby carrier is allowed to be pushed. The wheel braking mechanism 300 generally includes a wheel base housing assembly 320, a braking assembly (not shown in FIG. 1) and the braking pin (not shown in FIG. 1). During the use of the baby carrier, dust, sand, pebbles, water and other external debris can easily enter an interior of the wheel base housing assembly 320. In order to facilitate the discharge of the debris, a bottom of the wheel base housing assembly 320 is provided with a discharge hole 321. However, limited by a position and a diameter of the discharging hole 321, the debris entering the interior of the wheel base housing assembly 320 may not be discharged in time. When the debris accumulates in the interior of the wheel base housing assembly 320 to a certain extent, it may affect a normal braking function of the braking assembly. SUMMARY According to some embodiments of the present application, a wheel braking mechanism, a frame, and a child carrier are provided. According to an aspect of the present application, a wheel braking mechanism is provided. The wheel braking mechanism includes a wheel base housing assembly, a braking assembly mounted in the wheel base housing assembly, a braking pin connected to the braking assembly, and a dust shield engaged with the braking pin. A side wall of the wheel base housing assembly is provided with a sliding hole, the braking pin is capable of sliding in the sliding hole between a locking position and an unlocking position. When the braking pin slides in the sliding hole, the dust baffle shields the sliding hole. According to another aspect of the present application, a frame is provided. The frame includes above-mentioned wheel braking mechanism, a leg connected to the wheel base housing assembly; and a wheel. A wheel shaft of the wheel is connected to the wheel base housing assembly, a wheel hub of the wheel is circumferentially provided with a plurality of locking grooves, when the braking pin slides to the locking position, the braking pin is snapped into one of the locking grooves, when the braking pin slides to the unlocking position, the braking pin is retracted from the locking groove. According to another aspect of the present application, a child carrier is provided, including above-mentioned frame and a passenger compartment supported by the frame. Details of one or more embodiments of the present application are set forth in the following drawings and descriptions. Other objects, purposes and advantages will become apparent upon review of the following specification, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS In order to illustrate the embodiments of the present application more clearly, the drawings used in the embodiments will be described briefly. Apparently, the following described drawings are merely for the embodiments of the present application, and other drawings can be derived by those of ordinary skill in the art without any creative effort. FIG. 1 shows a frame and its wheels of a conventional baby carrier. FIG. 2 is a perspective view of a frame and its wheels according to an embodiment of the present application. FIG. 3 is a perspective view of a wheel in FIG. 2. FIG. 4 is a perspective view of a wheel braking mechanism and the wheel according to a first embodiment of the present application. FIG. 5 is an exploded view of the wheel braking mechanism according to the first embodiment of the present application. FIG. 6 is a side view of the wheel braking mechanism and the wheel according to the first embodiment of the present application, with a braking pin in a locking position and a dust shield being omitted. FIG. 7 is similar to FIG. 6, but shows the dust shield. FIG. 8 is a front side view of the wheel braking mechanism and the wheel according to the first embodiment of the present application, with the braking pin in a unlocking position and a dust shield being omitted. FIG. 9 is similar to FIG. 8, but shows the dust