Shake-free closing joint of baby carriage

Abstract

The invention discloses a shake-free closing joint of a baby carriage, and relates to a closing mechanism used for unfolding baby carriage joints for use or folding and closing the baby carriage joints. The shake-free closing joint is composed of an upper connecting tube, a lower connecting tube, an upper joint body, a lower joint body, a locking mechanism, a pull rope and the like. The locking mechanism further comprises a connecting sleeve tube, an elastic element, a ball mother shaft, a lock hole and the like. Principally, a plurality of sets of balls and ball sleeves sequentially distributed in the axial direction of the ball mother shaft are designed on the ball mother shaft, the matched balls and ball sleeves are in gapless meshing and movable assembling with a shaft hole in the upper joint body and the lock hole in the lower joint body, the assembling structure is a multi-point contact structure between the ball mother shaft and the upper joint body and between the ball mother shaft and the lower joint body, the gapless fit structure can be formed when the ball mother shaft axially moves in the shaft hole of the upper joint body or is axially and movably assembled in the lock hole in the lower joint body, shaking cannot occur in the use process, and therefore the more stable and reliable use performance is brought for unfolding use and folding closing of the baby carriage.

Description

technical field [0001] The invention relates to a folding joint structure on a baby carriage, in particular to a shaking-free folding joint of the baby carriage. Background technique [0002] The currently used baby carriages all involve structural folding and folding design. By designing the folding structure on the frame or joints of the baby carriage, the functions of unfolding, using and folding of the baby carriage can be quickly realized, such as The folding joint of the stroller is a commonly used joint folding structure of the stroller. It is similar to the "folding joint of the stroller" disclosed in Chinese Patent No. 200920216539.5. It is mainly composed of an upper connecting pipe, a lower connecting pipe, an upper Joints, lower joints, cables, locking mechanisms and keyholes, etc., the upper and lower joints are hinged to each other to form the mutual expansion or folding of the upper and lower connecting pipes, the locking mechanism and keyholes can be respecti...

AI Technical Summary

Problems solved by technology

[0002] The currently used baby carriages all involve structural folding and folding design. By designing the folding structure on the frame or joints of the baby carriage, the functions of unfolding, using and folding of the baby carriage can be quickly realized, such as The folding joint of the stroller is a commonly used joint folding structure of the stroller. It is similar to the "folding joint of the stroller" disclosed in Chinese Patent No. 200920216539.5. It is mainly composed of an upper connecting pipe, a lower connecting pipe, an upper Joints, lower joints, cables, locking mechanisms and keyholes, etc., the upper and lower joints are hinged to each other to form the mutual expansion or folding of the upper and lower connecting pipes, the locking mechanism and keyholes can be respectively set on the upper joints and the lower joint, and the cable is used to operate the locking mechanism and the lock hole to form a fitting lock or disengagement unlocking. In the above structural design, the locking mechanism is arranged in the upper joint or fitted in the lock hole of the lower joint. The contact between the upper and lower joints is a gap fit, that is, the locking mechanism is only designed to lock or unlock the function, and the contact between it and the upper and lower joints is usually a sliding fit with a gap, so in actual use During the process, there will be shaking between the upper and lower connecting pipes, which will also have a great impact on the stability and reliability of the stroller

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