JPH0627426Y2 - Ribbon cartridge holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] On both sides of the carrier, a supporting portion having a notch hole that engages with a shaft portion protruding from both side surfaces of the ribbon cartridge is provided upright, and the supporting portion is provided with a rotating portion. An opening / closing member that moves to open and close the cutout hole is provided, and the shaft portion of the ribbon cartridge is pressed and inserted into the cutout hole.

[Industrial application field]

The present invention relates to a serial dot printer, and more particularly to a ribbon cartridge mounting structure for supplying an ink ribbon to a print head.

Recently, various serial printer devices have been developed and put into practical use as input / output terminals of data processing devices and printers such as word processors.

Among them, the serial dot printer is expanding its use as a terminal in office automation (OA) because it can print characters, figures, etc. by forming dots.

Improvements in the operability of these serial dot printer devices are desired.

[Conventional technology]

FIG. 4 is a perspective view showing a printing portion of a serial dot printer device to which the ribbon cassette holder of the present invention is applied;
The figure is an exploded perspective view showing the ribbon cassette holder.

As shown in FIG. 4, the printing section includes a platen 1 and a platen 1
Carrier 3 which moves in parallel with belt 2 with respect to
A print head 4 mounted on the carrier 3 and facing the platen 1, and a print head 4 mounted on the carrier 3 similarly.
And a ribbon cartridge 5 for supplying an ink ribbon.

In order to print on the paper 6 with such a printing unit, the paper 6 is inserted from the rear side in the drawing of the printing unit as indicated by arrow A, and the platen 1 is rotated in the direction of arrow B to press the base through the front surface of the print head 4. The sheet is fed to a predetermined position where it is pressed by the roller 7.

Then, the print head 4 moves left and right by the reciprocating motion of the carrier 3, and prints on the paper 6.

When the printing of one line is completed, the platen 1 rotates by a predetermined distance to feed the paper 6, the print head 4 enters a line feed state, and printing is continued.

The printed sheet 6 is guided by the guide plate 8 and is ejected as indicated by arrow C.

In the printing section of such a printer, the ribbon cartridge 5 is mounted on the carrier 3 so as to surround the print head 4 as shown in FIG.

As shown in FIG. 5, the mounting method is performed by inserting and engaging the shaft portions 5a protruding on both side surfaces of the ribbon cartridge 5 into the notch holes 10 provided in the supporting portions 9 standing on both side portions of the carrier 3. .

A leaf spring 11 having a fitting hole 11a into which the shaft portion 5a is fitted is provided in the support portion 9 such that the fitting hole 11a is concentric with the cutout hole 10 and the support portion 9 is located inside from the outside (arrow D). , E direction)
It is provided so as to be pressed against.

Therefore, when the ribbon cartridge 5 is inserted, the leaf spring 11 is inserted so as to be opened outward by the shaft portion 5a, and when the shaft portion 5a fits into the fitting hole 11a, the leaf spring 11 returns to its original position. The ribbon cartridge 5 is fixed.

Therefore, when the ribbon cartridge 5 is to be removed, the leaf spring 11 is manually bent outward so that the shaft portion 5a can be removed from the fitting hole 11a.
Need to be removed.

In the case of multicolor printing, the ribbon cartridge 5 needs to be swung in the vertical direction in front of the print head 4 in order to change the color band formed in the stripe shape of the ink ribbon. However, at this time, the shaft portion 5a becomes the center of rotation.

[Problems to be solved by the invention]

As described above, the ribbon cartridge is inserted into the carrier, but at the time of insertion, the work of fitting the shaft portion into the fitting hole of the leaf spring is complicated and needs to be performed with caution. Further, there is a problem in that the stability of the ribbon cartridge is poor due to the rattling of the shaft portion and the fitting hole even after the insertion and the printing quality is adversely affected.

[Means for solving problems]

According to the present invention, the above-mentioned problem is caused by the present invention, in which the carrier 3 which is arranged so as to face the platen 1 as shown in FIGS. A support portion 13 and an opening / closing member 14 perpendicular to the carrier surface are provided at positions substantially corresponding to the width of the side where 5a is attached, and a shaft portion protruding from the side surface of the ribbon cartridge is provided on the upper side of the support portion. The support member has a substantially U-shaped support notch hole 12 that is opened upward so as to engage with the support member, and an inclined surface of the support member that is open outward from one end side of the opening. A fulcrum 16 located at the lower part of the rotatably pivotally supports along the surface of the supporting portion, and one side edge of the fulcrum 16 is at a position corresponding to the notch hole 12 of the supporting portion and is substantially U-shaped opening / closing member cutting orthogonal thereto. From the notch hole 14a and the upper end of the opening The opening / closing member inclined surface is opened to the side, and the other end of the opening / closing member is connected to the other end of the opening / closing member on the opposite side so as to be interlocked with each other by the connecting portion 14c, and the tip end is the lower surface of the carrier. The tongue piece 14b for the spring, which is in contact with and is connected to the connecting portion at a right angle, presses the opening / closing member notch hole 14a in the direction in which the opening / closing member notch hole 14a is overlapped with the supporting portion notch hole 12, thereby making the supporting portion inclined surface and the opening / closing member inclined surface Means that a substantially V-shaped groove portion is formed upward so that the shaft portion 5a of the ribbon cartridge is inserted, and the inclined surface of the opening / closing member is formed by the spring tongue piece 14b.
When it is turned in the opposite direction against the
The opening and closing member notch hole 14a is unset, and a leaf spring 15 is provided on the surface of the carrier for pressing the lower surface of the ribbon cartridge when the ribbon cartridge is attached. With the opening / closing member inclined surface of the opening / closing member 14 attached, the tongue piece 14 for spring is attached.
When the opening / closing member on the opposite side is also rotated through the connecting portion when rotated against the pressing of b, the shaft portion of the ribbon cartridge is lifted up by the leaf spring 15 above the notch hole of the supporting portion. It is solved by the ribbon cartridge holder.

〔Example〕

1 to 3 show an embodiment of the present invention. FIG. 1 is a side view of a ribbon cartridge holder of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. It is a side view which shows operation | movement of the opening / closing member at the time of insertion.

In the figure, 12 and 14a are notched holes, 13 is a support portion,
Reference numeral 14 is an opening / closing member, 14b is a spring tongue, 14c is a connecting portion, 15 is a leaf spring, 16 is a fulcrum, and 17 is a groove portion.
The same portions are denoted by the same reference numerals throughout the drawings.

As shown in FIG. 1 and FIG. 2, in the present invention, both ends of the carrier 3 are provided with a substantially U-shaped upward facing portion which engages with the shaft portions 5a on both end surfaces of the ribbon cartridge 5 to support the ribbon cartridge. A support portion 13 having a notch hole 12 and an inclined surface that opens outwardly is provided at one end thereof.

On the other hand, an opening / closing member 14 rotatable along the surface of the support portion 13
Has a substantially U-shaped cutout hole 14a whose lower part is pivotally supported by a fulcrum 16 located at the lower part of the support part 13 and which has one side edge cut out in a direction orthogonal to the cutout hole 12 of the support part. ,
It has an inclined surface that opens to the outside and continues to one end of the upper part.

As shown in FIG. 2, the other end of the opening / closing member 14 is connected to the other end of the other opening / closing member 14 at the other end of the carrier by a connecting portion 14c, and is perpendicular to the connecting portion. One end of the spring tongue piece 14b is joined, and the other end presses the lower surface of the carrier.

Therefore, the opening / closing member 14 is always biased by the spring tongue 14b so as to rotate in the arrow H direction about the fulcrum 16.

Then, when the opening / closing member 14 is rotated in the direction of the arrow H, the upper end of the cutout hole 14a closes the cutout hole 12 of the support member 13 as shown in the drawing.

A leaf spring 15 is provided at the left end of the carrier 3 in the figure, and operates to press and lift the ribbon cartridge 5 in the direction of arrow J shown in FIG.

In order to insert the ribbon cartridge 5 into the carrier 3 having such a structure, as shown in FIG. 1, the shaft portion 5a of the ribbon cartridge 5 is moved against the bias of the leaf spring 15 provided on the carrier 3 as shown by an arrow F. It is inserted into and pressed into the upwardly V-shaped groove portion 17 formed by the inclined surface of the support portion 13 and the inclined surface of the opening / closing member 14.

Then, as shown in FIG. 3, the opening / closing member 14 is pressed by the pressing force.
Rotates about the fulcrum 16 in the direction of arrow G, and the support member 13
The notch hole 12 is opened and the shaft portion 5a is inserted.

When inserted, the opening / closing member 14 released from the pressing force is
The spring tongue 14b is urged to rotate as shown by an arrow H so that the cutout hole 14a engages with the shaft portion 5a. The shaft portion 5a is supported by the support portion 13 and the cutout holes 12 and 14a of the opening / closing member 14. It is attached in the form of being held without rattling.

The engagement of the shaft portion 5a is performed substantially at the same time on the left and right, and the ribbon cartridge 5 is supported on the carrier 3 rotatably about the shaft portion 5a by the engagement.

Printing is performed in this state as described in FIG. 4,
On the other hand, to remove the ribbon cartridge 5 from the carrier 3, either the left or right opening / closing member 14 may be manually rotated in the arrow G direction.

By such rotation, the opening / closing member 14 connected by the connecting portion 14c simultaneously rotates as shown in FIG.
Open the notch hole 12 of the.

Then, the ribbon cartridge 5 becomes the leaf spring 1 shown in FIG.
It is lifted as indicated by arrow J by the urging force of 5, and the supporting portion 1
It comes off from 3 and can be easily removed.

[Effect of device]

As described above, in the ribbon cartridge holder of the present invention, the supporting portion 13 and the opening / closing member 14 are simple U-shaped notch holes 12 and 14a and have a simple shape having inclined surfaces. Since the notch hole 14a may be pivotally supported at the lower part of the support part so as to rotate on the surface of the support part so as to be substantially orthogonal to the notch hole 12 of the support part, the support part, the opening / closing member, the leaf spring, and The structure of the ribbon cartridge holder made of the carrier becomes simple.

If the shaft portion 5a of the ribbon cartridge is pushed into the groove formed by the inclined surfaces of the support portion and the opening / closing member, the shaft portion 5a is held in both the notched holes without rattling,
Further, if one of the opening / closing members is rotated in the counterclockwise direction, the shaft portion is easily released from both the notches by the action of the leaf spring 15, so that the ribbon cartridge can be easily attached to and detached from the ribbon cartridge holder. Therefore, the operability of the serial dot printer is significantly improved.

[Brief description of drawings]

FIG. 1 is a side view of a ribbon cartridge holder of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a side view showing an operation of an opening / closing member at the time of inserting a ribbon cartridge, and FIG. FIG. 5 is a perspective view showing a printing portion of a serial dot printer device to which the ribbon cartridge holder of the present invention is applied, and FIG. 5 is an exploded perspective view showing the ribbon cassette holder. In the figure, 1 is a platen, 3 is a carrier, 4 is a print head, 5 is a ribbon cartridge, 5a is a shaft part, 9 and 13 are support parts, 10, 12 and 14a are notched holes, and 11 and 15 are plates. A spring, 14 is an opening / closing member, 14b is a spring tongue piece, 14c is a connecting portion, 16 is a fulcrum, and 17 is a groove portion.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kei Maekawa 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Limited (56) References JP-A-59-111883 (JP, A) JP-A-60-151087 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A carrier 3 which is arranged so as to face the platen 1 and carries a print head 4 and a ribbon cartridge 5 on both sides substantially corresponds to the width of the side where the shaft portion 5a of the ribbon cartridge is mounted. A support portion 13 and an opening / closing member 14 which are perpendicular to the carrier surface are provided at a position, and a substantially U-shape which is opened upward so as to engage with a shaft portion projecting on a side surface of the ribbon cartridge on an upper side of the support portion. Is provided with a support portion cutout hole 12 and an inclined surface of the support portion opened outward from one tip side of the opening, and the opening / closing member 14 has a lower portion along the surface of the support portion by a fulcrum 16 located at the lower portion of the support portion. Is rotatably supported by a shaft, and a notch hole 12 of a supporting portion is provided at one side edge thereof.
Is provided with a substantially U-shaped opening / closing member notched hole 14a orthogonal to the opening and an opening / closing member inclined surface opened outward from the upper end of the opening, and the other end of the opening / closing member is provided on the opposite side. The other end of the member is connected to each other so as to be interlocked with each other.
The spring tongue piece 14b is joined at 4c and has its tip in contact with the lower surface of the carrier, and the other end is joined to the connecting portion at a right angle, so that the opening / closing member notch hole 14a is pressed in the direction of being superposed on the notch hole 12 of the support part. The inclined surface of the support portion and the inclined surface of the opening / closing member form a substantially V-shaped groove upward so that the shaft portion 5a of the ribbon cartridge is inserted, and the inclined surface of the opening / closing member is opposed to the spring tongue piece 14b. Then, when the ribbon cartridge is mounted, the support portion notch hole 12 and the opening / closing member notch hole 14a are unsuperposed. A leaf spring 15 is provided to press the spring upward, and when the inclined surface of the opening / closing member 14 of the opening / closing member 14 is rotated against the pressing of the spring tongue 14b with the ribbon cartridge attached, the opening / closing member on the opposite side is rotated. Also through the connecting part Rotation, and ribbon cartridge holder shaft portion of the ribbon cartridge, characterized in that the lifted above the support portion notched hole by a leaf spring 15.