Wheel freewheel mechanism and three-wheel baby carriage adopting same

A wheel and wheel core technology, applied in the field of children's bicycles, can solve the problems of not being able to meet the requirements at the same time, and achieve the effect of safety and reliability in a locked state and a separated state

Active Publication Date: 2012-01-11
HANGZHOU XIAOSHAN QIANHONG TRANSPORT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Neither of the above two structures can satisfy both needs well at the same time.

Method used

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  • Wheel freewheel mechanism and three-wheel baby carriage adopting same
  • Wheel freewheel mechanism and three-wheel baby carriage adopting same
  • Wheel freewheel mechanism and three-wheel baby carriage adopting same

Examples

Experimental program
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Effect test

Embodiment Construction

[0020] Such as figure 1 Shown: the live wheel flying mechanism of the present invention, by external fixture 1, spring 2, wheel core gear sleeve 3, clutch gear 4, shaft gear 5, knob 6 and positioning seat 7, are socketed on the axle 8 in sequence. Wherein shaft gear 5 is welded on the axle 8.

[0021] to combine figure 2 As shown: the wheel core gear sleeve 3 is a tubular part with a flange 32 , the inner wall has inner teeth 31 , the outer wall has raised lines 34 , and the flange 32 has mounting holes 33 . The convex strip 34 cooperates with the groove 91 in the wheel core to insert the wheel core tooth sleeve 3 into the wheel core 9 . The clutch gear 4 has an external tooth 41 meshing with the inner tooth 31 of the wheel core gear sleeve, and an internal tooth 42 meshing with the shaft gear 5 . The clutch gear 4 can slide axially after being inserted into the wheel core gear sleeve 3, and can be separated from the shaft gear 5 by sliding to the left, and meshed with the...

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PUM

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Abstract

The invention provides a wheel freewheel mechanism, which comprises a wheel core and a wheel shaft, wherein an outer fixing element, a spring, a wheel core gear sleeve, a clutch gear, a shaft gear, a knob and a positioning seat are sequentially sheathed on the wheel shaft, the shaft gear is fixedly arranged on the wheel shaft, the outer fixing element is fixedly arranged on one outer side of the wheel core, the wheel core gear is sheathed in the wheel core and is fixed with the wheel core, the knob is arranged at the other outer side of the wheel core, the positioning seat fixed with the wheel core is buckled outside the knob, shaft sleeves are respectively arranged in the axis positions of the outer fixing element and the knob and respectively extend to both sides of the shaft gear for limiting the axial movement of the shaft gear, the clutch gear is provided with outer teeth engaged with inner teeth of the wheel core gear sleeve and inner teeth engaged with the shaft gear, the clutch gear can slide in the axial direction for being separated from or being engaged with the shaft gear, and the knob and the spring are matched for realizing the axial sliding of the clutch gear. The invention also provides a three-wheel baby carriage adopting the wheel freewheel mechanism. The wheel freewheel mechanism and the three-wheel baby carriage have the advantages that two use functions of baby riding and adult pushing of a baby bicycle can be realized, and simultaneously, both the locking state and the separation state are safe and reliable.

Description

1. Technical field [0001] The invention relates to the technical field of children's bicycles, in particular to a wheel fly mechanism and a three-wheel baby carriage using the mechanism. 2. Background technology [0002] Children's tricycles are usually crankshaft driven to the front wheels. A kind of front wheel assembly in the existing children's tricycle is a dead fly structure, and when pedaling the wheel exactly, the step bar drives the wheel to rotate, and when the wheel rotates, the wheel drives the step bar to rotate. With this structure, when an adult pushes the child's foot on the pedal bar, the child's foot will also rotate with the pedal bar. The other is a live fly structure, that is, when the foot is pedaled, the pedal drives the wheel to rotate; when the foot is not stepped on, the wheel rotates, and the pedal does not move with the wheel. But the defect of this kind of live flying structure is that when an adult pushes from behind, the child will brake the ...

Claims

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Application Information

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IPC IPC(8): B62K9/02B62K13/00B62B7/12
Inventor 费杭燕沈柏根沈耀平
Owner HANGZHOU XIAOSHAN QIANHONG TRANSPORT MATERIAL
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