JPH0346927Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ribbon cartridge in which a ribbon guide member for guiding an ink ribbon to a predetermined printing position is rotatable.

As shown in FIG. 5, a conventional ribbon cartridge includes a ribbon cartridge case 2 that includes a ribbon feeding member and a ribbon storage section, and ribbon guide members 1a and 1b that guide the ink ribbon to a predetermined printing position.
Since the ribbon cartridge was constructed in one piece, the external dimensions of the ribbon cartridge became larger due to the protrusion of the ribbon guide member, and when it was packaged as a single unit, the packaging case became larger and transportation costs became relatively high. There were flaws.

It is an object of the present invention to provide a ribbon cartridge that eliminates these drawbacks, has a compact external size when packed, and can reduce transportation costs.

In the ribbon cartridge according to the present invention, the ribbon guide member has a shaft portion, one end portion that guides the ribbon stored in the ribbon cartridge case, and an ink ribbon stretched outside the ribbon cartridge case. The ribbon cartridge case has a bearing part that rotatably supports the shaft part on the bottom face, and a plate-shaped side wall made of an elastic material on the side face, An opening is provided between the ribbon guide member and the ribbon guide member, and when one end is located inside the side wall, this end comes into contact with the side wall and the ribbon guide member is in the raised state. When the ribbon guide member is held and the ribbon guide member is rotated so that one end is located outside the side wall, this end comes into contact with the lower end of the side wall, and the rotation of the ribbon guide member is restricted. It is something to do.

Hereinafter, a detailed explanation will be given based on the drawings.

FIG. 1 is a perspective view of a ribbon cartridge showing an embodiment of the present invention, and FIG. 2 is a partially detailed view of the ribbon cartridge, showing the state in which the ribbon guide member is raised.

A cylindrical shaft portion 3a is provided on a part of the pair of ribbon guide members 3 that guide the ink ribbon 5 to a predetermined printing position, and a cylindrical shaft portion 3a is provided on the inner bottom surface 4g of the ribbon cartridge case 4 that stores the ink ribbon. It is rotatably engaged with a bearing portion 4a having a semicircular cross section. The ribbon guide member 3 has side walls 3b and 3c integrally provided and has a concave cross section to prevent the ink ribbon 5 from coming off.
A part of c has a protruding ink ribbon detachment prevention part 3.
d is provided. Further, the side walls 3b, 3c of the ribbon guide member are in contact with the side walls 4b, 4e of the ribbon cartridge case 4, and the ribbon guide member 3 is in contact with the side walls 4b, 4e of the ribbon cartridge case 4.
The patient is kept in an upright position with e as the percussion. The bottom and side walls of the ribbon cartridge case have an opening 4f and cutouts 4c, 4d for arranging the ribbon guide member 3, and the side wall 4
b and 4e are elastically deformable.

When folding the ribbon guide member 3, follow the arrow p
When force is applied in the direction, the side walls 3b and 3c tend to rotate around the shaft portion 3a, and the cartridge case 4
Push the side walls 4b and 4e of the Cartridge case 4
The side walls 4b, 4e of the ribbon guide member 3 are formed in a cantilever shape by the notches 4c and 4d and have spring properties, so that the side walls 3b, 3c of the ribbon guide member 3 are the same as the side walls 4b, 4e of the cartridge case 4. Rotate while pushing 4e open. When the ribbon guide member 3 is rotated approximately 90 degrees, the side walls 3b, 3c are released from the state in which they were pressing the insides of the side walls 4b, 4e, and the side walls 4b, 4
e returns to its original position, and the lower ends of the side walls 4b and 4c are located on the surface of the ribbon guide member 3 on the shaft side. Therefore, the ribbon guide member 3 is attached to the side walls 4b, 4
Rotation is regulated by the lower end 4h of c and held in the folded state. Note that the ribbon guide member 3
In the raised usage state, the cartridge case side walls 4b and 4e are held under elastic pressure, and remain stable unless a large external force is applied. Further, when excessive tension is applied to the ink ribbon 5, troubles can be prevented due to the elasticity of the side walls 4b and 4e.

The notch 4c in the side wall of the ribbon cartridge case also functions as a groove through which the ink ribbon 5 is passed when it is set in the cartridge case 4, making it easy to set the ribbon.

3 is a side sectional view of the embodiment of FIG. 2; FIG. The bearing part 4a of the cartridge case 4 has a semicircular cross-sectional shape at the engagement part with the shaft part 3a of the ribbon guide member.
Since it is formed to be slightly narrower than the diameter of a, when inserting the shaft part 3a into the separate bearing part 4a, the opening of the bearing part 4a is forcibly pushed wider and engaged, preventing it from coming off later. It will perform the following functions.

FIG. 4 shows another embodiment according to the present invention. Second
The cartridge case side walls 4b and 4e in the figure are integral with the cartridge case 4, but a separate elastic body, such as a metal plate spring, is used as a substitute for performing the same function. 6, with a notch 7 provided therebetween. According to this embodiment, it is possible to freely select the thickness of the elastic body, and the thickness of the elastic body can be freely selected.
It has the advantage that the load to hold can be arbitrarily selected.

As described above, according to the present invention, when one end of the ribbon guide member is located inside the side wall of the ribbon cartridge, this end comes into contact with the side wall and the ribbon guide member is in the raised state. On the other hand, when the ribbon guide member is rotated and one end is located outside the side wall, this end comes into contact with the lower end of the side wall, and the rotation of the ribbon guide member is restricted.

That is, when the ribbon cartridge is used (the ribbon guide member is raised), the ribbon guide member is held open by the elastic force of the side wall of the cartridge case.

On the other hand, when the ribbon cartridge case is packed and transported individually (with the ribbon guide member folded), the lower end of the side wall of the ribbon cartridge case restricts the rotation of the ribbon guide member, making it difficult to assemble. Since the ribbon guide member does not open even when subjected to vibrations and shocks during transportation after the line or packaging, the configuration of the assembly line can be simplified and packaging work has become much easier.

Furthermore, even if the ribbon is stored in the case, the ribbon guide member opens during transportation, and the ink ribbon comes into contact with the case, causing ink to flow into the case and prevent problems during transportation, such as differences in ink concentration on the ribbon in that area. can do.

Furthermore, since the ribbon cartridge in the folded state occupies a significantly reduced volume, packaging costs and transportation costs can be reduced, making it possible to provide an inexpensive ribbon cartridge.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the appearance of the ribbon cartridge of the present invention. 3... Ribbon guide member, 4
. . . Cartridge case side wall, 3d . . . Ink ribbon detachment prevention portion, FIG. 2 is a partial detailed view of the ribbon cartridge of the present invention. 3a...Shaft part, 4a
. . . Bearing portion. FIG. 3 is a side sectional view of the ribbon cartridge according to the present invention. FIG. 4 is a partially detailed view showing another embodiment of the ribbon cartridge according to the present invention. 6...Side wall, FIG. 5 is a perspective view of a conventional ribbon cartridge. 1a, 1b... Ribbon guide arm, 2... Ribbon cartridge case.

Claims (1)

[Claims for Utility Model Registration] A ribbon cartridge consisting of a ribbon cartridge case in which an ink ribbon is stored, and a pair of ribbon guide members that guide the ink ribbon, wherein the ribbon guide member has a shaft portion and a pair of ribbon guide members that guide the ink ribbon. , one end portion that guides the ribbon stored in the ribbon cartridge case, and the other end portion that guides the ink ribbon stretched outside the ribbon cartridge case; The toritsuji case includes a bearing section that rotatably supports the shaft section on the bottom surface, a plate-shaped side wall made of an elastic material on the side surface, and the ribbon guide member between the bottom surface and the side wall. is provided with an opening in which the ribbon guide member is arranged, and when the one end is located inside the side wall, the one end comes into contact with the side wall and the ribbon guide member is held in an upright state. , in a state where the ribbon guide member is rotated and the one end is located outside the side wall,
A ribbon cartridge, wherein the one end comes into contact with a lower end of the side wall to restrict rotation of the ribbon guide member.