JPS5985785A - Correction ribbon feeder for typewriter - Google Patents

Abstract

PURPOSE:To eliminate a dead space and contrive to reduce size and weight, by a construction wherein correction ribbon spools can be rotated in a vertical plane, and a pair of left and right correction frames can be synchronously moved up and down by a cam symmetrical on the left and right sides. CONSTITUTION:A driving shaft 33 is rotated together with the cam 32 by a motor 34, and a pair of left and right correction framds 3, 4 are rotated in vertical direction at the same timing and with the same stroke, with a supporting shaft 2 as a fulcrum. A ratchet 6 is fed by a feeding pawl 15 so that the correction ribbon 28 is taken up by a ribbon spool 7, which ribbon 28 is let out from a ribbon spool 20. Since the correction ribbon spools 7, 20 and the ratchet 6, 17 are rotated in vertical planes, transverse size can be reduced, it is unnecessitated to connect the pair of correction frames 3, 4 to each other by a connecting member crossing a carrier 1, functional component parts can be located at arbitrary positions, and the size and weight of the carrier 1 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a collection ribbon feeding device for a typewriter.

[Technical thoughts on the invention and its problems]

Conventionally, in typewriters, characters are erased by striking the collector ribbon with a hammer while facing the platen. This collection ribbon feeding means connects a pair of left and right collection frames to a gear rear that moves along a platen so as to be vertically movable, and - a ratchet and a collection ribbon spool are connected and attached to the 7-frame collect; Attach the collect ribbon spool to the side collect frame and the collect ribbon spool to this collect ribbon spool.
4j is equipped with a braking mechanism that detects resistance, and these collect frames are moved up and down to cause the ratchet on the winding side to interfere with the feed pawl. The collect ribbon is wound from the collect ribbon spool on one side to the collect ribbon spool on the other side.

However, the collect ribbon facing the platen with a plane perpendicular to it is simply bent and wound around the collect IJ, ]': N'Freno, and therefore the collect ribbon spool must be rotated in a horizontal plane.
It has the disadvantage that the left and right width dimensions are large.

Also, if you do not move the left and right collect frames at the same time with the same stroke, the feeding operation of the IJ y3#n will be unstable. must be connected. Since these connections cross the carrier, there are major restrictions on the arrangement of functional parts mounted on the carrier, which has the drawback of increasing dead space and increasing the size.

[Purpose of the invention]

This invention was developed in view of the above-mentioned points, and it is possible to rotate the collect ribbon spool in a vertical plane, support a pair of left and right collect frames independently without connecting them to each other, and furthermore, it is possible to rotate the collect ribbon spool in a vertical plane. The object of the present invention is to provide a collection ribbon feeding device for a tie-lighter, which allows frames to operate synchronously and, therefore, can be made smaller and lighter.

[Summary of the invention]

In this invention, a pair of left and right collect frames are connected to the lower movement hole on both sides of the carrier, and a ratchet and a collect ribbon are attached to the negative side of the collect frame.

- A collection ribbon spool is provided on the other side of the collect frame so as to be freely rotatable about the left and right axis, and a braking mechanism is provided to move the collect frame up and down. The ratchet on the take-up side interferes with the feed pawl, the collector ribbon spool is taken from the collector ribbon spool on the negative side to the collector ribbon spool on the other side, and the left and right width is adjusted by rotating the collector ribbon spool and ratchet in the vertical plane. In addition, each of the collect frames is moved upward synchronously by symmetrical cams, thereby stabilizing the movement and supporting the collect frames independently without connecting them to each other. Therefore, functional parts can be freely arranged on the carrier, dead spaces are eliminated, and the structure is designed to facilitate miniaturization and weight reduction.

[Embodiments of the invention]

An embodiment of this invention will be described based on the drawings.

(1) is a carrier that reciprocates along a platen (not shown) (Fig. 2). A collect frame (3) is attached to both ends of the support l111 (2) held by this carrier (1).
(4) is biased in one direction by a spring (5) and is freely connected to the knee F times.

-1111's collect frame (3) has a ratchet (
6) ,! :Collect ribbon spool (power and pin (8)
) is maintained by As shown in Fig. 5, the ratchet (6) is provided with a plurality of elastic pawls (b) that detachably hold the periphery of the catch plate (9) formed on the collection ribbon spool (7). There is. In addition, the collection ribbon spool (force mounting plate (9) and the ratchet (force) are provided with pawls θυ (121) that engage with each other on the opposing surface. A reverse prevention pawl (+1:l) that engages with the ratchet (6) is rotatably provided while being biased by a spring (14). The carrier (1) is biased in one direction by the spring (1 (9)
It is rotatably mounted (=J).

A ratchet αη and a single plate (18) are attached to the other collect freno (4) by a screw 09 so as to sandwich the collect freno (4) from both sides. As shown in FIG. 6, the ratchet (I7) is integrally formed with an elastic pawl (221) that elastically engages with the shaft hole (21) formed in the center of the collect ribbon spool (20). This collector ribbon spool (-!IM of 20) has a plurality of protrusions (the second floor is arranged radially, and a plurality of holes 124 that engage with these protrusions (c)) are installed (=
J board (1 barrel and ratchet) (17) is formed. In addition, the collect frame (4) has a ratchet (17
) The anti-reversal claw (2!'i) that engages with the spelling (2!'i)
6), it can be moved to one side and can be turned freely. These love objects (17) and the anti-reverse pawl (c) constitute a collect ribbon spool (a brake device 'il't +27 that applies rotational resistance to the ribbon).

In addition, both collect frames f3) (4) have a collect ribbon with an inclined slit that bends the path of the collect ribbon Q that faces the platen in a vertical plane and gradually turns the surface of the collect ribbon horizontally. A guide C and a guide roller are provided.

Therefore, roller roughs) 1) are provided on the inner surfaces of both collect frames f3) f4), and these rollers C31)
A symmetrical cam that comes into contact with the drive shaft is fixed to both ends of the drive shaft. The gear rear (1) includes a motor Oa, a spring clutch 07 that transmits the rotation of the pinion connected to the motor C4 to the printing ribbon cam c3G,
Drive pinion C3190 rotation! Spring clutch (3 → and magnet (A!11
F411 is provided. Spring clutch 43
7) C1ω is a stopper (4
i (4G), armature (41) (magnetic) 431 (armature (41) (four protrusions +49
+44) is a known device that enters a power transmission state when the connection is broken.

In such a configuration, one of the magnets) C','
When jJ is excited and the rotational force of the motor (31) is transmitted to the printing ribbon cam (3fi), the printing ribbon cam (:>
1;), the ribbon mount (not shown) mounted on the gear rear (1) rotates, and the ribbon cassette (not shown) faces the printing position, but details and l'llll are omitted. do.

Koren of this invention) IJ Bon c! Frame feeding begins with the excitation of the other magnet (41). That is, in response to the rotation of the motor (3), the drive shaft (3) rotates together with the cam (3). Since the roller c3υ is connected to these cams (3), the pair of left and right collect frames (
31 (4) rotates vertically about the support shaft (2) at the same timing and with the same stroke. During this vertical movement, the ratchet (6) is sent by the feed pawl 0C, and the collect ribbon (marked 2 is taken up by the force on the take-up side collect ribbon spool), and the other collect ribbon spool (21 is pulled out together with the ratchet uD). The collection ribbon Q barrel is rotated by the tension of the collection ribbon C! (to) which is rotated by the rotation of the collection frame (3) (4). In this process, the collection ribbon (to) is fed.At this time, by forming the protrusion 123 of the collection ribbon spool (21) in a spiral shape as shown in FIG. !0
) is rounded in the axial direction and deviates toward the ratchet 07) side. That is, it is possible to smoothly rotate the collection ribbon spool (20) with some play in the axial direction.

So ° [, Collect ribbon spool (7) tI! 2)
(6) ft7) rotates in a vertical plane, so the width dimension can be reduced. Also, collect frame (
3) (4) is independently connected to the carrier (1) via the support shaft (2).
), but operates synchronously with the symmetrical cam 021. This allows the p1 sending operation to be performed stably. Kara, Jin, a pair of collect frames (3)
(4) do not need to be connected to each other by the connecting part side that crosses the carrier (1), and therefore functions such as the print head, rad motor, or other 1” XIX products can be placed in any position, eliminating dead space and making the carrier (
1) can be made smaller and lighter.

〔Effect of the invention〕

Since this invention is configured as described above, the collector ribbon spool can be rotated in a vertical plane on the side of the collector frame, thereby reducing the 2=right width dimension, and , the pair of left and right collect frames can be moved up and down synchronously using symmetrical cams, which eliminates the need for a connecting part that connects the left and right collect frames, allowing freedom in the arrangement of functional parts attached to the gear rear. Therefore, it has the effect of reducing the dead space and making the gear rear smaller and lighter in ML.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a reduced perspective view, Fig. 2 is a plan view, Fig. 3 is a vertical cross-sectional view taken along line A-A in Fig. The figure is a side view of the line 13-13 in Figure 2, Figure 5 is an enlarged horizontal sectional view of the collection ribbon spool and ratchet structure on the winding side, and Figure 6 is the collector ribbon on the unwinding side. An enlarged horizontal sectional view of the spool and ratchet mounting structure.
FIG. 7 is a plan view of the collection ribbon spool on the unwinding side. 1. Carrier, 3-4. Collect frame, 6.. Ratchet, 7.. Collect ribbon spool, 20. Collect ribbon spool, 27 Braking 1jt 47.7
．． 2B Collect ribbon, 29... Collect ribbon guide, 32 cam, 34... Motor output Ha 1 person Tokyo l Niki Co., Ltd. ~ Collection 5 Goji procedure amendment (self-motivated) February 21, 1982: l Special ,;'l Director-General Kazuo Wakasugi 1/1 Indication Patent Application No. 1989 196189 2 Name of Invention Typewriter Co. 1/Cut Ribbon Feed Device; 3 Supplement 11
Relationship with Nagisa and former 'l Patent applicant 11 Agent 〒107 None 6 Subject of Sodeichi ・'Simi°・, ζ-niichi

Claims (1)

[Claims] Collect frenos are movably connected in a vertical plane to both sides of a carrier that moves parallel to the platen, and both sides of the collect ribbon facing the platen with a plane perpendicular to the platen are routed toward the outside of the collect frame. A collect ribbon guide is provided on the collect frame to direct the surface of the collect ribbon horizontally by refracting the collect ribbon. The collector ribbon spool is mounted rotatably in one direction with its axial center in the left-right direction, and the collect ribbon spool is rotatably supported in the other side of the collect frame with its axial center in the left-right direction, and rotational resistance is applied to the collect ribbon spool. A typewriter characterized in that a braking mechanism is provided on the carrier, and symmetrical cams are coaxially arranged and connected to a motor on the carrier to simultaneously move the collect frenos in the vertical direction. Collection ribbon feeding device.