JPS63158711U - - Google Patents

Description

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

第１図Ａは本考案の実施例を示す側断面図、第
１図Ｂは同正面図、第１図Ｃは同背面図、第２図
Ａは駆動軸の側面図、Ｂは同背面図、第３図Ａは
スクリユーの側面図、Ｂは同正面図、第４図Ａは
スリーブの側面図、Ｂは同背面図、第５図Ａはガ
イドの側面図、Ｂは同正面図、第６図は爪の下面
図、第７図Ａはラチエツト板の側面図、Ｂは同正
面図、第８図Ａは操作環の側面図、Ｂは同正面図
、第９図Ａはスライド環の側面図、Ｂは同背面図
、第１０図は逆転防止部の展開平面図、第１１図
Ａは従来構造の側断面図、Ｂは同正面図である。 ７…駆動軸、１１…スリーブ、１６…爪、２０
…ラチエツト板、２３，２４…ラチエツト、２８
…スプリング、２９…解除手段であるスライド環
。 Figure 1A is a side sectional view showing an embodiment of the present invention, Figure 1B is a front view of the same, Figure 1C is a rear view of the same, Figure 2A is a side view of the drive shaft, and Figure 2B is a rear view of the same. , FIG. 3A is a side view of the screw, B is a front view, FIG. 4A is a side view of the sleeve, B is a rear view, FIG. 5A is a side view of the guide, B is a front view, Figure 6 is a bottom view of the claw, Figure 7A is a side view of the ratchet plate, B is a front view of the same, Figure 8A is a side view of the operating ring, B is a front view of the same, Figure 9A is a view of the slide ring. FIG. 10 is a developed plan view of the reverse rotation preventing portion, FIG. 11A is a side sectional view of the conventional structure, and FIG. 11B is a front view of the conventional structure. 7... Drive shaft, 11... Sleeve, 16... Claw, 20
...Ratchet plate, 23, 24...Ratchet, 28
...Spring, 29...Slide ring which is release means.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 駆動軸７の正転に対し、スリーブ１１の逆転に
より爪１６を閉じ作用するようにしたものにおい
て、駆動軸７側にラチエツト板２０を、軸方向に
は摺動可能で回転方向に対しては駆動軸７と一体
回転するように設けると共に該ラチエツト板２０
の前面にラチエツト２３を形成し、前記スリーブ
１１の後面には前記ラチエツト２３に噛合するラ
チエツト２４を形成し、前記ラチエツト板２０に
は、これを前記スリーブ１１側へ押圧するスプリ
ング２８を設け、前記両ラチエツト２３，２４を
、スリーブ１１の開方向回転時に噛合するように
形成し、更に、前記ラチエツト板２０には、前記
両ラチエツト２３，２４を解除する解除手段を設
けたことを特徴とする工具保持用チヤツク。 In the device in which the pawl 16 is closed by reversing the sleeve 11 when the drive shaft 7 rotates in the normal direction, a ratchet plate 20 is provided on the drive shaft 7 side, which is slidable in the axial direction but not in the direction of rotation. The ratchet plate 20 is provided to rotate integrally with the drive shaft 7.
A ratchet 23 is formed on the front surface of the sleeve 11, and a ratchet 24 that engages with the ratchet 23 is formed on the rear surface of the sleeve 11. The ratchet plate 20 is provided with a spring 28 that presses it toward the sleeve 11. A tool characterized in that both ratchets 23 and 24 are formed so as to mesh with each other when the sleeve 11 rotates in the opening direction, and further, the ratchet plate 20 is provided with a release means for releasing both the ratchets 23 and 24. Holding chuck.