JPS63170244U - - Google Patents

Description

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

第１図乃至第５図は本考案に係るインクリボン
カートリツジの駆動構造の実施例を示し、第１図
は要部の縦断面図、第２図はフイードロールと受
動ギアの分解断面図、第３図は第１図の―線
断面図、第４図はフイードロールと受動ギアの要
部の分解斜視図、第５図はインクリボンカートリ
ツジ全体の横断面図である。第６図乃至第８図は
夫々別の実施例を示す要部の断面図、第９図は従
来のインクリボンカートリツジを示す要部の縦断
面図である。 Ｒ……インクリボン、４……フイードロール、
４Ｃ……軸部、１７……受動ギア、１８……嵌合
面、１９……係止溝、２０……嵌合面、２１……
係止爪、２２……切欠部。 1 to 5 show an embodiment of the ink ribbon cartridge drive structure according to the present invention, in which FIG. 1 is a vertical sectional view of the main parts, FIG. 2 is an exploded sectional view of the feed roll and passive gear, and FIG. 3 is a cross-sectional view taken along the line -- in FIG. 1, FIG. 4 is an exploded perspective view of the main parts of the feed roll and the passive gear, and FIG. 5 is a cross-sectional view of the entire ink ribbon cartridge. 6 to 8 are sectional views of main parts showing different embodiments, and FIG. 9 is a vertical sectional view of main parts showing a conventional ink ribbon cartridge. R...Ink ribbon, 4...Feed roll,
4C... Shaft portion, 17... Passive gear, 18... Fitting surface, 19... Locking groove, 20... Fitting surface, 21...
Locking claw, 22... Notch.

Claims (1)

【実用新案登録請求の範囲】 １ インクリボンＲを駆動するフイードロール４
の軸部４Ｃに受動ギア１９をトルク伝達可能な状
態で嵌着してあるインクリボンカートリツジの駆
動構造であつて、前記フイードロール軸部４Ｃの
嵌合面１８又は受動ギア１７の嵌合面２０に、回
転半径方向に開口する係止溝１９を形成し、他方
、前記受動ギア１７の嵌合面又は前記フイードロ
ール軸部４Ｃの嵌合面１８には、前記係止溝１９
に回転半径方向から係合して、フイードロール４
に対する受動ギア１７の抜け出し移動を阻止する
係止爪２１と、この係止爪２１の回転半径方向で
の弾性変位を許す切欠き部２２とを形成してある
インクリボンカートリツジの駆動構造。 ２ 前記フイードロール軸部４Ｃと受動ギア１７
との間でのトルク伝達手段が、これら両者４Ｃ，
１７の嵌合面を相対回動不能な異径形状に構成す
る手段である実用新案登録請求の範囲第１項に記
載のインクリボンカートリツジの駆動構造。 ３ 前記フイードロール軸部４Ｃと受動ギア１７
との間でのトルク伝達手段が、前記係止溝１９及
び係止爪２１を回転方向で断続形成する手段であ
る実用新案登録請求の範囲第１項に記載のインク
リボンカートリツジの駆動構造。[Claims for Utility Model Registration] 1. Feed roll 4 that drives the ink ribbon R
This is a drive structure for an ink ribbon cartridge in which a passive gear 19 is fitted onto a shaft portion 4C in a torque transmittable state, and the fitting surface 18 of the feed roll shaft portion 4C or the fitting surface 20 of the passive gear 17 is A locking groove 19 that opens in the rotation radial direction is formed in the locking groove 19, and the locking groove 19 is formed in the fitting surface of the passive gear 17 or the fitting surface 18 of the feed roll shaft portion 4C.
The feed roll 4 is engaged from the rotational radial direction.
This ink ribbon cartridge drive structure is formed with a locking pawl 21 that prevents the passive gear 17 from moving away from the drive gear 17, and a notch 22 that allows elastic displacement of the locking pawl 21 in the rotational radial direction. 2 The feed roll shaft portion 4C and the passive gear 17
The torque transmission means between these two 4C,
17. The drive structure for an ink ribbon cartridge according to claim 1, which is means for configuring the fitting surfaces of 17 to have different diameter shapes that cannot be rotated relative to each other. 3 The feed roll shaft portion 4C and the passive gear 17
The ink ribbon cartridge drive structure according to claim 1, wherein the torque transmission means between the ink ribbon cartridge and the ink ribbon cartridge is a means for forming the locking groove 19 and the locking pawl 21 intermittently in the rotational direction.