JPS6355972U - - Google Patents

Description

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

第１図は第２図に示される上送り機構の上送り
台に設けられるカム手段を構成する案内部材の正
面図、第２図は上送り機構の斜視図、第３図は本
案の上送り歯の軌跡を示す図、第４図は従来例の
上送り歯の軌跡を示す図である。 ３……上送り歯、４……上送り台、６……上送
り上下軸、７……クランクピン、８……クランク
、９……下送り歯、１１……クラツチ機構、１５
……当て板、１７……カム溝。 Figure 1 is a front view of a guide member constituting the cam means provided on the upper feed base of the upper feed mechanism shown in Figure 2, Figure 2 is a perspective view of the upper feed mechanism, and Figure 3 is the upper feed of the present invention. FIG. 4 is a diagram showing the trajectory of the upper feed dog in a conventional example. 3...Upper feed dog, 4...Upper feed base, 6...Upper feed vertical axis, 7...Crank pin, 8...Crank, 9...Lower feed dog, 11...Clutch mechanism, 15
...Backing plate, 17...Cam groove.

Claims (1)

【実用新案登録請求の範囲】 (1) 主軸に連動して送り方向に往復動する部材
に上下方向に揺動可能に軸支され、自由端部に下
送り歯と対向する上送り歯を設けた上送り台と、
主軸に連動して上下方向に揺動し、上送り台に係
合して該送り台を上下動させるクランクを含む上
下動機構とを有するミシンの上送り機構において
、上送り台に下向きの傾斜部と上向きの傾斜部と
を有するカム手段を設ける一方、クランクにカム
手段に摺動可能に係合する摺動部材を設け、クラ
ンクが下向きに回動するときには摺動部材がカム
手段の下向きの傾斜部に、クランクが上向きに回
動するときには上向きの傾斜部にそれぞれ係合す
るようにしたことを特徴とする上送り機構。 (2) カム手段は摺動部材に上方より係合する登
録請求の範囲第１項記載の上送り機構。 (3) カム手段は摺動部材の上下両側より係合す
る登録請求の範囲第１項記載の上送り機構。 (4) カム手段はそれ自身か或いはこれを設けた
部材とともに交換可能である登録請求の範囲第１
項記載の上送り機構。[Claims for Utility Model Registration] (1) A member that reciprocates in the feed direction in conjunction with the main shaft is pivotally supported so as to be swingable in the vertical direction, and the free end is provided with an upper feed dog opposite to the lower feed dog. and an upper feed stand;
In an upper feed mechanism of a sewing machine having a vertical movement mechanism including a crank that swings vertically in conjunction with a main shaft and engages with an upper feed table to move the feed table up and down, the upper feed table is tilted downward. cam means having a section and an upwardly sloping section, and the crank is provided with a sliding member that slidably engages the cam means, and when the crank is rotated downwardly, the sliding member moves downwardly toward the cam means. An upper feed mechanism characterized in that the upwardly inclined portions are engaged with the inclined portions when the crank rotates upward. (2) The upper feeding mechanism according to claim 1, wherein the cam means engages the sliding member from above. (3) The upper feeding mechanism according to claim 1, wherein the cam means engages the sliding member from both upper and lower sides. (4) The first registered claim is that the cam means itself or together with the member on which it is provided is replaceable.
Upper feed mechanism as described in section.