JPS60244584A - Ribbon guide of carriage - Google Patents

Abstract

PURPOSE:To make it possible to simply assemble a ribbon guide to a carriage, in a printer, by guiding the up-and-down movement of a collecting ribbon by a leaf spring shaped ribbon guide and a card holder for inhibiting the levitation of paper. CONSTITUTION:A ribbon guide 11 is positioned behind a card holder 10 and a collecting ribbon E is held under pressure between a ribbon guide part 11b and the card holder 10 and the ribbon guide part 11b prevents the positional shift of the ribbon E easy to slip out when the ribbon E is moved upwardly over a correction width region. An arm part 11d elastically suppressing the generation of the vibration noise between the ribbon guide part 11b and a ribbon cassette 3 and a tongue piece 11e for preventing the forward warpage and the generation of vibration noise of a wheel cassette 3 are integrally formed by one leaf spring material and fixed to the bracket 8 of a carriage A along with the card holder 10 by rivets. By this method, the ribbon guide can be simply assembled to a carriage.

Description

[Detailed description of the invention] Hamamata Ran The present invention is applicable to printing devices such as printers.

This invention relates to a carriage for a printing device that has a collection mechanism that allows correction of printed parts.

Moxibustion technique! A printing device with a collection mechanism uses a wide ribbon in which the printing ribbon part and the correction ribbon part are divided into upper and lower areas, and the ribbon mounted on a carriage and set is , the ribbon side led out to the printing section is pushed upwards with respect to the type wheel side, and the correction ribbon portion is moved to the printing position.

However, the conventional collection mechanism has a problem in that the ribbon guided to the printing position tends to come off the printing position when it is moved upward. Further, the above-mentioned device having a mechanism for preventing the ribbon from coming off has problems such as a complicated structure, a large number of parts, and high cost.

This invention addresses the above-mentioned problems and allows the collection ribbon to be easily moved up and down in a carriage with a collection mechanism using a ribbon guide in the form of a leaf spring and a card holder that prevents paper from floating up. Moreover, the ribbon guide and the card holder can be fixed to the bracket of the carriage at the same time with a simple screw, and the wheel cassette can be prevented from shaking through the ribbon guide. There is a particular thing.

Next, the present invention will be explained based on an embodiment shown in the drawings.

In Figures 1 and 2, the symbol (A) indicates the carriage, and this carriage (A) is connected to the support shaft (B
) and a support stay (C), and can move in the sliding direction along the support shaft and support stay, and reciprocate along the so-called platen (D).

The carriage (A) has a frame (1) made up of side plates in the area in the sliding direction, and within the space of the frame (1), a motor and related mechanisms for selectively rotating the type wheels necessary for printing are installed. has been done. A holder (4) for holding a wheel cassette (3) is integrally provided at the tip of the internal frame (2) on the side that supports the motor. Therefore, the type wheel (5) in the wheel cassette (3) inserted into this holder (4) from above has its center of rotation aligned with the rotation axis (6) driven by the motor on the inner frame (2) side. matches. Note that the reference numeral (7) indicates a printing hammer portion that is attached to the inner frame (2) side.

On the other hand, a bracket (8) is attached to the tip of the frame (1) with screws (9) across the frame area, and this bracket (8) is attached to the holder (4). There is no such thing as straddling the wheel cassette (3) that is attached and detached. This bracket (8) is.

As is clear from FIG. 3, the card holder (10) and ribbon guide (11) have a fixing part (13) that can be fixed simultaneously with screws (12), and this fixing part (13) has a fixing part (13) that can be fixed simultaneously with the screw (12).
12) is missing so that it can be screwed on. Therefore, the card holder (10) and the ribbon guide (11) have mounting parts (10a) and (lla) on each level at positions corresponding to the fixing parts (13) and (13), respectively. be.

The card holder (10) is configured so that its front surface (the side facing the platen) can be close to the circumference of the platen CD, and the window hole (i
ob) is worn.

The ribbon guide (11) is formed by punching a leaf spring material, and is arranged on the back side of the card holder (10), and is located in the area near the window hole (iob) of the card holder (10).
(See Figures 1 and 2) (E) and an arm that is located below the base part (lie) and can come into contact with the front surface area of the wheel cassette (3). Similarly, the wheel cassette (3) has a tongue piece (lie) that can come into contact with a slightly upper part at the front center position of the wheel cassette (3).

In the above, the attachment of the card holder (10) to the bracket (8) is simply the attachment part (10a).
The ribbon guide (11) has a base part (llc) and an attachment part (lla) that are aligned with the back positions of the fixing parts (13) and (13), respectively.
13) in the state shown in FIG.
) and the ribbon guide (11) are fixed with screws (12) at positions where they are sandwiched between the part (lla) and the ribbon guide (11).

Therefore, the ribbon guide (11) is attached to the card holder (10).
), as shown in Figures 1 and 2, the ribbon guide (llb) and card holder (10)
), and the ribbon guide portion (llb) serves to prevent the ribbon (E) from shifting its position, which tends to come off when the ribbon (E) moves upward by the corrected width decrement.

Furthermore, this ribbon guide (11) has a set state (
The arm part (lid) (11
d) and the tongue piece (lle) are provided, so the holder (4)
The cassette case (3a) of the wheel cassette (3), which is loosely inserted into the wheel cassette (3), comes into contact with the arm part (lid) and the tongue piece (lie) when moving forward during setting, and presses against the holder (4).
) can simultaneously prevent rattling noise.

In addition, when the wheel cassette (3) is in the reset state (the state shown in FIG. 1), the arm portion (lid) and the tongue piece (lie) are in a standby position where they do not come into contact with the cassette case (3a). Therefore, the wheel cassette (3) can be inserted into and removed from the holder (4) without being obstructed.

The bracket (8) also has a wheel presser spring (14).
) is provided facing the center position of the type wheel (5), and the front center of the type wheel (5) in the cent state is
The wheel pressing spring (14) presses the type wheel (5) toward the rotating shaft (6), and the type wheel (5) in this state is selectively rotated while being held by the wheel pressing spring (14) and the rotating shaft (6).

However, the type wheel (5) is generally molded from a synthetic resin material, and sliding with the metal wheel presser spring (14) tends to cause abrasion on the contact surface at the center and also generates noise. Put it away.

This is why, in this embodiment, the type wheel (5
) A sliding member (for example, a resin sheet) (1, 5) is attached to the spring (14) side of the surface that contacts the center of the type wheel (5) as a measure to prevent wear and noise. It is installed using means.

Since the ribbon guide of the present invention is as described above, it includes a ribbon guide section that guides the collect ribbon, an arm section that elastically suppresses the generation of vibration noise of the ribbon cassette, and a wheel cassette that prevents forward warpage and vibration. A tongue piece that prevents sound generation,
The ribbon guide is made of a single leaf spring and can be easily assembled to the carriage by simply fixing it to the bracket of the carriage at the same time as the card holder via screws.

Therefore, each part with the above functions can be accurately fixed via the screws that fix the card holder with a small number of parts, making assembly and disassembly work extremely easy on the manufacturer's side or during service. , it can also greatly contribute to reducing the cost of printing devices.

Further, according to the present invention, when fixing a card holder made of synthetic resin, tightening with screws can be done by tightening the part, and attaching a metal ribbon guide can be tightened by attaching the part. This attachment of the holder has the advantage of preventing damage to the parts.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, in which a side view of the carriage in a reset state, FIG. 2 a side view of the same in a set state, and FIG.
The figure is an exploded perspective view showing how the card holder and ribbon guide are attached to the bracket, FIG. 4 is an explanatory view of how the ribbon guide is attached to the bracket, and FIG. 5 is an explanatory plan view of the wheel pressing spring. (3)・・・・・・Wheel cassette (3a)・
......Cassette case (8)...
...Bracket (work 0) ...Card holder (11) ...
... Ribbon guide (llb) ... Ribbon guide section (lid) ... Arm section (A) ... Carriage patent applicant Co., Ltd. All of Rico Shunsuke Nakao Patent attorney representing Rico Ichitoki Co., Ltd. Figure 4

Claims (1)

[Claims] In a carriage of a printing device having a collection mechanism, a ribbon guide for positioning the running of the ribbon and a card holder for holding paper can be simultaneously fixed to a bracket at a wheel cassette insertion position of the carriage, and the ribbon 1. A ribbon guide for a carriage, wherein the guide includes a ribbon guide section having a ribbon guiding function for a ribbon cassette, and an arm section having a cassette case holding function for a wheel cassette inserted into the carriage.