JPH0172866U

JPH0172866U -

Info

Publication number: JPH0172866U
Application number: JP1987167264U
Authority: JP
Priority date: 1987-10-31
Filing date: 1987-10-31
Publication date: 1989-05-16

Description

[Brief explanation of the drawing]

第１図は、この考案に係る水平歯車の説明図で
、同ａは一部の切欠斜視図、同ｂは一部切欠平面
図、第２図は下送りローラと水平歯車の各歯部の
噛合状態を示す図で、同ａは水平歯部の外周部分
における下送りローラの歯部との噛合を示す一部
切欠断面図、同ｂは水平歯部の内周部分における
下送りローラの歯部との噛合を示す一部切欠正面
図、第３図は上下送りローラミシンの一部切欠斜
視図、第４図は下送りローラの駆動機構の外観斜
視図、第５図は従来技術における水平歯車を示す
図で、同ａは一部切欠拡大斜視図、同ｂは、全体
斜視図、第６図は従来技術における下送りローラ
と水平歯車の噛合状態を示す図で、同ａは、水平
歯部の外周部分における噛合状態を示す一部切欠
斜視図、同ｂは内周部分における噛合状態を示す
一部切欠正面図、同ｃは水平歯部における干渉部
分を示す一部切欠側面図である。１……上送りローラ、２……下送りローラ、２
ａ……下送りローラの歯部（送り歯）、１０……
立軸、１１……水平歯車、１１ａ……水平歯部。 Fig. 1 is an explanatory diagram of the horizontal gear according to this invention; Fig. 1a is a partially cutaway perspective view, Fig. 1b is a partially cutaway plan view, and Fig. 2 shows the lower feed roller and each tooth of the horizontal gear. Figures illustrating the meshing state: a is a partially cutaway sectional view showing the meshing of the outer peripheral part of the horizontal teeth with the teeth of the lower feed roller, and b is a partially cutaway sectional view showing the teeth of the lower feed roller in the inner peripheral part of the horizontal teeth. Fig. 3 is a partially cutaway perspective view of the upper and lower feed roller sewing machine, Fig. 4 is an external perspective view of the drive mechanism of the lower feed roller, and Fig. 5 is a horizontal view in the prior art. 6 is a diagram showing a gear, in which a is a partially cutaway enlarged perspective view, b is an overall perspective view, and FIG. FIG. 2B is a partially cutaway perspective view showing the meshing state at the outer circumferential portion of the teeth, FIG. be. 1...Top feed roller, 2...Bottom feed roller, 2
a... Teeth portion of the lower feed roller (feed teeth), 10...
Vertical shaft, 11...Horizontal gear, 11a...Horizontal tooth portion.

Claims

[Scope of Claim for Utility Model Registration] A lower feed roller that feeds the workpiece in cooperation with an upper feed roller, and a horizontal tooth portion that meshes with the tooth portion of this lower feed roller that rotates in the vertical direction. A vertical gear having the horizontal gear on its upper end surface and rotating in the horizontal direction by the lower shaft of the sewing machine via a swing shaft, etc. A lower feed roller drive mechanism in an upper and lower roller feed sewing machine, characterized in that, in the horizontal tooth portion, the interval between each tooth of a horizontal gear having a meshing position on the inner circumference or outer circumference side is made wider on one side than on the other. .