JPS6243575U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の送り装置の一実施例が採用さ
れたミシンの下方アームの内部を示す上面図、第
２図はその背面図、第３図は送り歯が上昇した状
態を示す第１図のＡ―Ａ線に従う断面図、第４図
は送り歯が下降した状態を示す第３図と同様な断
面図である。 １……下軸、２……上下送りカム、２Ａ……第
１のカム面をなす偏心カム面、２Ｂ……第２のカ
ム面をなす円筒カム面、３……水平送り軸、４…
…水平送り腕、８……送り歯、９……送り台、１
０……上下送り腕、１２……操作部材、１３……
作動係合部、１４……下方アーム、１４Ａ……ミ
シンベツド面、１５……開口、１６……操作端、
１７……弾性保持端、１８……係止部。 FIG. 1 is a top view showing the inside of the lower arm of a sewing machine in which an embodiment of the feed device of the present invention is adopted, FIG. 2 is a rear view thereof, and FIG. FIG. 4 is a cross-sectional view taken along the line AA in the figure, and is a cross-sectional view similar to FIG. 3 showing a state in which the feed dog is lowered. 1...Lower shaft, 2...Vertical feed cam, 2A...Eccentric cam surface forming the first cam surface, 2B...Cylindrical cam surface forming the second cam surface, 3...Horizontal feed shaft, 4...
...Horizontal feed arm, 8...Feed dog, 9...Feed stand, 1
0... Vertical feed arm, 12... Operation member, 13...
Operation engagement portion, 14... Lower arm, 14A... Sewing machine bed surface, 15... Opening, 16... Operating end,
17...Elastic holding end, 18...Locking portion.

Claims (1)

【実用新案登録請求の範囲】 縫針の上下往復運動と調時して加工布に送り運
動を付与する送り歯と、その送り歯を載置保持す
る送り台に前後方向の送り運動を付与するために
ミシンの下方アームに架設された水平送り軸を中
心に揺動する水平送り腕と、前記下方アーム内に
おいて前記水平送り軸と平行に架設され、ミシン
主軸の回転に伴つて回転する下軸と、前記送り歯
をミシンベツド面に対して出没させる上下送り運
動を発生させる第１のカム面と送り歯をミシンベ
ツド面に対して沈下させる第２のカム面とが形成
され、その両カム面のいずれか一方が前記送り台
またはそれに作動的に連結された部材と選択的に
係合し得るように前記下軸の軸線方向に摺動可能
で且つその下軸と共に回転する上下送りカムと、
その上下送りカムを前記下軸の軸線方向に摺動変
位させるために手動操作可能な操作部材とを備え
たミシンにおいて、 前記操作部材が前記水平送り軸に摺動可能に装
着され、 前記下方アームに穿設された開口から外方に延
出する操作端と、前記上下送りカムを摺動変位さ
せるためにその上下送りカムと係合する作動係合
部と、前記操作部材の操作位置を保持するために
前記下方アーム内に形成された係止部と弾性的に
係合する弾性保持端とが前記操作部材に一体的に
形成されていることを特徴とするミシンの送り装
置。[Scope of Claim for Utility Model Registration] To provide a feed dog that imparts a feed motion to the work cloth in synchronization with the vertical reciprocating movement of the sewing needle, and a feed table that holds the feed dog in the forward and backward direction. a horizontal feed arm that swings around a horizontal feed shaft installed in the lower arm of the sewing machine, and a lower shaft that is installed in the lower arm parallel to the horizontal feed shaft and rotates as the main shaft of the sewing machine rotates. , a first cam surface that generates a vertical feed movement that causes the feed dog to protrude and retract from the sewing machine bed surface, and a second cam surface that causes the feed dog to sink with respect to the sewing machine bed surface, and a first cam surface that causes the feed dog to sink relative to the sewing machine bed surface; a vertical feed cam that is slidable in the axial direction of the lower shaft and rotates together with the lower shaft so that one of the cams can selectively engage the feed base or a member operatively connected thereto;
In the sewing machine, the sewing machine includes an operating member that can be manually operated for slidingly displacing the vertical feed cam in the axial direction of the lower shaft, wherein the operating member is slidably mounted on the horizontal feed shaft, and the lower arm an operating end extending outward from an opening drilled in the operating member; an operating engagement portion that engages with the vertical feeding cam for slidingly displacing the vertical feeding cam; and holding the operating position of the operating member. A feeding device for a sewing machine, characterized in that an elastic holding end that elastically engages with a locking portion formed in the lower arm is formed integrally with the operating member.