JPH0253393U

JPH0253393U -

Info

Publication number: JPH0253393U
Application number: JP13382588U
Authority: JP
Priority date: 1988-10-12
Filing date: 1988-10-12
Publication date: 1990-04-17

Description

[Brief explanation of the drawing]

第１図〜第５図は請求項１記載の考案のペーパ
ーカツターの一実施例を示す図であり、第１図は
そのペーパーカツターの斜視図、第２図はその固
定刃と回転刃のかみ合わせ状態の説明図、第３図
はその回転刃とドラムの連結機構の斜視図、第４
図はそのドラムと駆動用シヤフトの連結構造を示
す側面図、第５図は第４図の要部拡大図である。
第６，７図は請求項２記載の考案のペーパーカツ
ターの一実施例を示す図であり、第６図はそのド
ラムと駆動用のシヤフトの連結構造を示す要部拡
大図、第７図はその作用説明図である。第８図は
本願の課題を解決するための他の考案の一実施例
に使用するウオーム歯車の斜視図である。第９図
〜第１３図は従来のペーパーカツターの一例を示
す図であり、第９図はそのペーパーカツターの斜
視図、第１０図はその固定刃と回転刃のかみ合わ
せ状態の説明図、第１１図はその回転刃とドラム
の連結機構の斜視図、第１２図はそのドラムの駆
動機構の正面図、第１３図はドラムとレバーの動
作説明図である。第１４図は従来のペーパーカツ
ターの他の例に使用されるドラム駆動機構の正面
図である。２１……ペーパーカツター、２２……固定刃、
２３……回転刃、２４ａ，２４ｂ……ブラケツト
、２５ａ，２５ｂ……支持軸、２６……紙、２７
……レバー、２７ａ……長穴、２８……ドラム、
２８ａ……駆動ピン、２８ｂ……穴、２８ｃ……
係合ピン、２９，４０……シヤフト、２９ａ，４
０ａ……らせん溝、５０……つまみ。 1 to 5 are views showing an embodiment of the paper cutter of the invention as claimed in claim 1, FIG. 1 is a perspective view of the paper cutter, and FIG. 2 is a fixed blade and a rotary blade thereof. An explanatory diagram of the engaged state; Fig. 3 is a perspective view of the coupling mechanism between the rotary blade and the drum; Fig. 4
The figure is a side view showing the connection structure between the drum and the drive shaft, and FIG. 5 is an enlarged view of the main part of FIG. 4.
6 and 7 are diagrams showing an embodiment of the paper cutter of the invention as claimed in claim 2, FIG. 6 is an enlarged view of the main part showing the connection structure of the drum and the driving shaft, and FIG. is an explanatory diagram of its action. FIG. 8 is a perspective view of a worm gear used in an embodiment of another invention for solving the problems of the present application. 9 to 13 are diagrams showing an example of a conventional paper cutter, in which FIG. 9 is a perspective view of the paper cutter, and FIG. 10 is an explanatory diagram of the interlocking state of the fixed blade and rotary blade. FIG. 11 is a perspective view of the coupling mechanism between the rotary blade and the drum, FIG. 12 is a front view of the drum drive mechanism, and FIG. 13 is an explanatory diagram of the operation of the drum and lever. FIG. 14 is a front view of a drum drive mechanism used in another example of a conventional paper cutter. 21...Paper cutter, 22...Fixed blade,
23...Rotary blade, 24a, 24b...Bracket, 25a, 25b...Support shaft, 26...Paper, 27
... Lever, 27a ... Long hole, 28 ... Drum,
28a...drive pin, 28b...hole, 28c...
Engagement pin, 29, 40...shaft, 29a, 4
0a...Spiral groove, 50...Knob.

Claims

[Claims for Utility Model Registration] (1) A fixed blade whose both ends are fixed to a bracket, a rotary blade whose both ends are rotatably supported by the bracket, and a long hole which is fixed to one end of the rotary blade. and a drum which is provided with a drive pin inserted into the elongated hole of the lever and rotates to rotate the lever around the rotary blade by the drive pin, and the drum is rotated via the lever. In a paper cutter that cuts paper by transmitting power to a rotating blade and engaging a fixed blade within an elastic range, a hole for connecting the shaft is formed in the center of the drum, and a hole is formed on the inner peripheral surface of the hole. A shaft connected to a drive source and formed with a spiral groove is inserted into the hole, and an engagement pin of a drum is inserted into the spiral groove, so that the shaft cuts the paper. When the shaft rotates in the normal rotation direction, the engagement pin contacts the end face of the helical groove and rotates the drum, and when the shaft rotates in the reverse direction, the engagement pin slides within the helical groove and rotates the drum against its drive pin. A paper cutter, characterized in that the paper cutter is moved in a direction in which the lever is removed from the lever. (2) A fixed blade whose both ends are fixed to the bracket, a rotary blade whose both ends are rotatably supported by the bracket, a lever which is fixed to one end of the rotary blade and has an elongated hole formed therein, and the lever A drum is provided with a drive pin inserted into the elongated hole and rotates to rotate the lever around the rotary blade through the drive pin, the rotation of the drum is transmitted to the rotary blade via the lever, and the rotary blade is rotated. In a paper cutter that cuts paper by meshing with a fixed blade within an elastic range, a hole for connecting the shaft is formed in the center of the drum, and an engaging pin that protrudes into the hole is formed on the inner peripheral surface of the hole. Then, a shaft connected to a drive source and having a helical groove formed therein is inserted into the hole, and an engagement pin of the drum is inserted into the helical groove, and as the shaft rotates, the engagement pin between the helical groove of the shaft and the engagement pin is inserted. When the torque acting on the engagement position becomes larger than the frictional force between the helical groove and the engagement pin, the engagement pin slides within the helical groove, causing the drum to move in the direction in which its drive pin disengages from the lever. Features a paper cutter.