Central spindle for baby carriage

A baby carriage and mandrel technology, which is applied in the directions of baby carriage/stroller, baby carriage/cradle accessories, shaft, etc. The effect of the service life

Inactive Publication Date: 2017-05-17
SUZHOU YINTAO PRECISION FORGING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the quality of the stroller is a rigid condition for parents to consider purchasing. Parents will choose the stroller according to the road conditions. Consequences, so the performance of the stroller mandrel determines the quality of the stroller, but the current stroller mandrel is directly processed and formed, and it has broken into two parts from the middle

Method used

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  • Central spindle for baby carriage
  • Central spindle for baby carriage

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Embodiment Construction

[0015] refer to Figure 1~2 , a mandrel used for a stroller, comprising a mandrel body 1, the mandrel body 1 is processed by a heat treatment process before machining to obtain comprehensive properties of strength, hardness, plasticity, and toughness. First, the mandrel body 1 Carry out graded quenching, quenching in a low-temperature salt bath or alkali bath furnace, and at the same time control the temperature of the salt bath or alkali bath near the Ms point, the mandrel body 1 stays at this temperature for 2 minutes to 5 minutes, and then take it out for air cooling, the purpose of graded cooling It is to make the temperature inside and outside the mandrel body 1 relatively uniform, and at the same time carry out martensitic transformation, which can greatly reduce the quenching stress and prevent the mandrel body 1 from deforming and cracking. The hardness after fire is 200-330HB, so that the strength, hardness, plasticity and toughness of the mandrel body 1 have better m...

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PUM

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Abstract

The invention provides a central spindle for a baby carriage. The central spindle comprises a central spindle body, which is characterized by comprising a limiting board and a bearing shaft segment, a first circle arc shape transitional surface is formed on the place between the limiting board and the bearing shaft segment, a cone shape clip head is formed on the edge of the other side of the bearing shaft segment, a limit shaft segment is formed on the inner side of the cone shape clip head, and the surface roughness of the bearing shaft segment and the limit shaft segment is Ra=0.8. The central spindle for the baby carriage adopts a warm forging technology processing, after the forge forming, the inner tissues of the blank take a fiber flow distribution, the cracking situation of the central spindle body is guaranteed not to appear, then the central spindle body adopts the technology of heat processing, so that the tensile strength, the hardness, the plasticity and the tenacity of the central spindle body obtain relatively good mechanical property on the whole, meanwhile, the surface roughness of the bearing shaft segment and the limit shaft segment is Ra=0.8, and the abrasive resistance, fatigue resistance, contact stiffness, and oscillations of the surface layer of the central spindle body are further improved, and the service life of the central spindle body is prolonged.

Description

technical field [0001] The invention relates to a mandrel for a stroller. Background technique [0002] The stroller is a tool cart designed for the convenience of the baby's outdoor activities. It is the baby's favorite means of transportation for walking. The benefits of increasing children's brain development. Therefore, the quality of the stroller is a rigid condition for parents to consider buying. Parents will choose the stroller according to the road conditions of travel. If the travel road conditions are not smooth enough and bumpy, long-term use will cause the spindle of the stroller to break, causing unimaginable accidents. Consequences, so the performance of the stroller mandrel determines the quality of the stroller, but the current stroller mandrel is directly processed and formed, and it has broken into two parts from the middle. Contents of the invention [0003] The present invention aims at the deficiencies of the prior art, and provides a mandrel for a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62B9/00F16C3/02
CPCB62B9/00F16C3/02
Inventor 钱进浩聂兰启胡亚民龚小涛付传峰
Owner SUZHOU YINTAO PRECISION FORGING CO LTD
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