The invention discloses a groove type commutator, which comprises a bakelite powder matrix and a plurality of reversing copper sheets uniformly distributed in the outer circle of the bakelite powder matrix, the adjacent reversing copper sheets are insulated and isolated by mica sheets, the top of the reversing copper sheet is provided with a welding line step, the welding line step is provided with a welding line slot, and the inner side of the reversing copper sheet is provided with a fixed foot to be implanted into the bakelite powder matrix, which is characterized in that: each The reversing copper sheet is composed of left and right half bodies of the same shape which are split in the middle, the left and right half bodies are closely contacted with each other, and the fixing feet are arranged on the inner side of the left and right half bodies. The invention solves the technical problem that the prior art reversing copper strip can not punch the fixed feet from the side direction due to the large circumference angle, and effectively solves the problem that the reversing copper strip has large working noise due to the large circumference size and large thermal deformation during operation.
【技术实现步骤摘要】
槽型换向器
本专利技术涉及一种槽型换向器的改进专利技术。
技术介绍
现有技术的槽型换向器,包括电木粉基体和在电木粉基体的外圆作圆周均布的多只换向铜片,换向铜片的内侧面设有固定脚,换向铜片在成型时首先由铜线材拉拔出横截面形状,然后从侧面方向进行冲制,冲制过程中同时形成固定脚。当一只换向铜片上开设两条焊线槽时,换向铜片的片数会较小而圆周角就会较大,圆周角的增大会使换向铜片的两侧翼内侧挡住固定脚的部分冲制路径,因此影响到固定脚的形成,除非改变固定脚的冲制尺寸或改变换向铜片两侧翼的厚度,这显然会影响槽型换向器的工作性能,并不可取。另外,圆周角大的换向铜片往往圆周尺寸大,工作时热变形也大,使换向器与碳刷接触的圆周表面不圆滑,会造成工作噪音大。
技术实现思路
鉴于现有技术的不足,本专利技术的目的是提供一种解决现有技术换向铜片由于圆周角大而无法从侧面方向冲制固定脚技术问题,同时也解决换向铜片由于圆周尺寸大、工作时热变形大而造成工作噪音大问题的槽型换向器。本专利技术是采取如下技术方案来完成的:槽型换向器,包括电木粉基体和在电木粉基体的外圆作圆周均布的多只换向铜片,相邻换向铜片之间由云母片进行绝缘隔离,换向铜片的顶部设有焊线台阶,焊线台阶开设焊线槽,换向铜片的内侧面设有固定脚植入到电木粉基体内,其特征在于:每只换向铜片由中间对开的相同形状的左右半体组成,左右半体相互紧贴接触,所述固定脚在左右半体的内侧面均有布设。所述固定脚的上下两端设有加固环槽,加固环槽内放置加固环。上述技术 ...
【技术保护点】
1.槽型换向器,包括电木粉基体和在电木粉基体的外圆作圆周均布的多只换向铜片,相邻换向铜片之间由云母片进行绝缘隔离,换向铜片的顶部设有焊线台阶,焊线台阶开设焊线槽,换向铜片的内侧面设有固定脚植入到电木粉基体内,其特征在于:每只换向铜片由中间对开的相同形状的左右半体组成,左右半体相互紧贴接触,所述固定脚在左右半体的内侧面均有布设。/n
【技术特征摘要】
1.槽型换向器,包括电木粉基体和在电木粉基体的外圆作圆周均布的多只换向铜片,相邻换向铜片之间由云母片进行绝缘隔离,换向铜片的顶部设有焊线台阶,焊线台阶开设焊线槽,换向铜片的内侧面设有固定脚植入到电木粉基体内,其特征在于:每只换...
【专利技术属性】
技术研发人员:张余明,
申请(专利权)人:浙江利丰电器股份有限公司,
类型:发明
国别省市:浙江;33
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