JPH0214445Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention This invention relates to a cassette ribbon holding device for a printer.

Technical background of the invention and its problems Conventionally, as shown in Fig. 1, the cassette holder A
Attachment part D to be attached to carrier C with screw B.
A hole G is formed in the cassette holder A to which a vibration isolating rubber F that supports the cassette ribbon E is attached, and a locking lever H for holding the cassette ribbon E in the cassette holder A is attached to a spring I.
There is a hinge piece J that is cut and raised so that it can be attached rotatably while being biased in one direction.

Therefore, the cassette ribbon E is placed on the anti-vibration rubber F of the cassette holder A while the locking lever H is elastically retracted outward, and the locking lever H returns to its original position.
The cassette ribbon E can be held by the cassette ribbon E.

However, in order to hold the cassette ribbon E, it is necessary to provide a plurality of anti-vibration rubbers F, locking levers H, and springs I.
A plurality of screws B are required to attach the carrier C to the carrier C, which has the drawback of increasing the number of parts and the number of assembly steps.

Purpose of the invention This invention was developed in view of the above points, and the object is to provide a cassette ribbon holding device for a printer that can reduce the number of parts and can be assembled extremely easily and quickly.

Summary of the invention In this invention, the cassette mounting surface and different types of locking pawls are integrally formed, one of the locking pawls is elastically bent to engage the carrier, and the other locking pawl is engaged with the carrier. The projecting part elastically deflects and engages with the cassette ribbon, supporting the cassette ribbon and absorbing vibrations while elastically deflecting the protruding part.Therefore, the number of parts can be greatly reduced and assembly can be shortened. It is designed to be extremely easy to perform.

Embodiment of the invention An embodiment of the invention will be explained based on FIGS. 2 to 5. 1 is the platen, this platen 1
A carrier 4 is slidably held on guides 2 and 3 installed parallel to the carrier. This carrier 4
A wheel holder 7 holding a daisy wheel 5 and a hammer 6 is rotatably attached by a hinge 8, and a clamp 9 that presses and fixes the wheel holder 7 to the platen 1 side and drives the daisy wheel 5. A motor 10 is provided. Furthermore, the carrier 4 is formed with a plurality of support columns 11.

Cassette holder 12 attached to carrier 4
As shown in FIGS. 4 and 5, the cassette mounting surface 13 has a plurality of locking claws 14, a pair of left and right locking claws 15, a plurality of protrusions 16, and a screw 17 for ribbon detection. Mounting hole 19 for mounting sensor 18
The bearing 20 and the bearing 20 are integrally molded from elastic plastic. Locking claw 14,
15 and the protrusion 16 are formed to be elastically flexible. Reference numeral 21 denotes a drive shaft held by the carrier 4, and a gear 22 connected to a motor 25 mounted on the carrier 4 is fixedly fitted to the drive shaft 21.

In such a configuration, the cassette holder 12 is secured by resiliently engaging each of the locking claws 14 with the locking holes 23 formed on the upper surface of the support column 11 of the carrier 4.
is held in carrier 4. Next, by pressing the cassette ribbon 24 from above against the cassette holder 12, the locking pawl 15 temporarily retreats to the outside, but returns due to its own elasticity and locks the cassette ribbon 2.
Hold 4. The protrusion 16 is attached to the cassette ribbon 24
elastically supports and absorbs vibrations. In addition, bearing 20
A drive shaft 21 supported by the cassette ribbon 24 projects inward from the bottom of the cassette ribbon 24 and is connected to a feed roller (not shown) inside the cassette ribbon 24.

In this way, the cassette holder 12
Since the locking pawl 14 that engages with the cassette ribbon 24, the locking pawl 15 that holds the cassette ribbon 24, and the protrusion 16 that supports the cassette ribbon 24 are integrated, the number of parts can be significantly reduced. It can be assembled very easily in a short period of time.

Effects of the invention As described above, this invention integrally forms the locking part that engages with the carrier on the cassette mounting surface, the locking pawl that holds the cassette ribbon, and the protrusion that supports the cassette ribbon. This has the advantage of greatly reducing the number of parts and making assembly work extremely easy in a short period of time.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a plan view showing an embodiment of the invention, Fig. 3 is a side view thereof, Fig. 4 is an enlarged perspective view of the cassette holder, and Fig. 5. FIG. 2 is an enlarged cross-sectional view showing how the cassette holder is attached to the carrier. 4...Carrier, 13...Cassette placement surface, 1
4, 15...Latching claw, 16...Protrusion, 24...
Cassette ribbon.

Claims (1)

[Scope of utility model registration request] A locking pawl that engages with the carrier on the cassette mounting surface, a locking pawl that engages with the cassette ribbon, and a protrusion that supports the cassette ribbon are integrally formed so as to be elastically flexible. Printer cassette ribbon holding device.