JPH032536Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper roll winding reel device for a printer.

[Conventional technology]

Conventionally, a take-up reel device for winding roll paper such as journal paper has a take-up reel body 1 having a flange portion 101a at one end as shown in FIG.
01 is attached to the take-up reel shaft 102, and the flange body 10 is attached to the other end of the take-up reel body 101.
3 is detachably inserted, and the roll paper 105 is wound up by rotating the take-up reel shaft 102 with the gear 104. When the paper 105 that has been wound up is removed from the take-up reel, the flange body 103 is attached to the take-up reel body 101.
The paper 105 can be removed by pulling it out.

[Problem that the invention attempts to solve]

In such a conventional roll paper take-up reel device, as shown in FIG.
A retaining member 106 such as an O-ring is attached to the take-up reel shaft 102 at the insertion end of 01, and the contact pressure between the retaining member 106 and the flange body 103 prevents the flange body 103 from coming off. Therefore, there was a problem in that the frictional resistance caused by the contact surface pressure was large and the flange body 103 could not be easily attached to and detached from the take-up reel body 101. Further, a gap is created between the take-up reel shaft 102 and the flange body 103 due to the retaining member 106, and this gap allows the flange body 10 to be removed during winding.
There was also a drawback that the winding mechanism 3 rattled and the winding operation became unstable.

The present invention was made to solve the above problems, and its purpose is to make it easy to attach and detach the flange body to the take-up reel body, to prevent rattling during winding, and to form a rolled shape. An object of the present invention is to provide a roll-shaped paper take-up reel device capable of stably winding paper.

[Means for solving problems]

The rolled paper take-up reel device according to the present invention has the following features:
A take-up reel body that has a flange at one end and is attached to the take-up reel shaft, an elastic tube attached to the outer periphery of the take-up reel shaft at the other end of the take-up reel body, and this elastic tube have no gaps between them. a flange body that has a cylindrical part that fits and is detachable from the take-up reel body; and a flange body that is formed on the outer periphery of the elastic tube and that engages with a locking part formed on the inner peripheral surface of the flange body. a tapered portion that prohibits movement in the unloading direction; and an escape formed on the outer periphery of the take-up reel shaft that causes the tapered portion to retract through elastic deformation and release the engagement state with the locking portion when the flange body is attached or removed. It is characterized by comprising a recessed part.

[Effect]

In the present invention, by attaching an elastic tube to the outer periphery of the take-up reel shaft on the other end side of the take-up reel body, which fits tightly into the cylindrical part of the flange body, it is possible to eliminate wobbling during winding. By providing a tapered part on the outer periphery of the elastic tube to inhibit movement of the flange body in the extraction direction, and providing a relief recess for the tapered part on the outer periphery of the take-up reel shaft, the flange body can be easily attached to and removed from the take-up reel body. It can be carried out.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1 is a sectional view of a roll-shaped paper take-up reel device showing an embodiment of the present invention. In the figure, reference numeral 1 denotes a take-up reel body having a flange portion 1a at one end, and this take-up reel body 1 is attached to a take-up reel shaft 2. A gear 4 is rotatably provided at the end of the take-up reel shaft 2, and a retaining ring 7 for the gear 4 is attached to its outer end. Further, a coil spring 6 is inserted in a compressed state between the gear 4 and the take-up reel body 1, so that the rotational force from the gear 4 is transmitted to the take-up reel body 1.

An insertion recess 1b is formed at the end of the take-up reel body 1 opposite to the flange 1a, and an elastic tube 8 such as a vinyl pipe is attached to the take-up reel shaft 2 within this insertion recess 1b. ing. This elastic tube 8
The elastic tube 8 is fitted tightly into the cylindrical portion 3a of the flange body 3, which is detachable from the take-up reel body 1, and a tapered portion 8a is formed on the outer periphery of the elastic tube 8, as shown in FIG. 2a. As shown in FIG. 2b, this tapered portion 8a engages with a locking portion 3b formed on the inner circumferential surface of the cylindrical portion 3a to inhibit movement of the flange body 3 in the extraction direction. When the take-up reel shaft 2 is attached or removed, it is elastically deformed and inserted into an escape recess 9 formed on the outer periphery of the take-up reel shaft 2. In the figure, 5 is a roll of paper, 10 is a retaining ring for the take-up reel body 1, and 11 is a retaining ring for the elastic tube 8.

In this way, the elastic tube 8 that fits tightly with the cylindrical portion 3a of the flange body 3 is attached to the outer circumference of the take-up reel shaft 2, and the flange body 3 is attached to the outer circumference of the elastic tube 8.
By providing a tapered portion 8a that prohibits movement in the extraction direction, and providing an escape recess 9 for the taper portion 8a on the outer periphery of the take-up reel shaft 2, the taper portion 8a is placed inside the escape recess 9 when the flange body 3 is attached or removed. Since the engagement state with the locking portion 3a is released by recessing the flange body 3, the flange body 3 can be easily attached and detached. In addition, the cylindrical portion 3a of the flange body 3 and the elastic tube 8
The flange body 3 fits without any gaps during winding.
There is no rattling.

[Effect of idea]

As described above, according to the present invention, there is a take-up reel body that has a flange portion at one end and is attached to the take-up reel shaft, and a take-up reel body that is attached to the outer periphery of the take-up reel shaft at the other end of the take-up reel body. an elastic tube; a flange body having a cylindrical portion that fits into the elastic tube without a gap and is detachable from the take-up reel body; a tapered part that engages with the locking part and prohibits movement of the flange body in the extraction direction; and a tapered part formed on the outer periphery of the take-up reel shaft, which causes the tapered part to retract through elastic deformation and lock when the flange body is attached or removed. Since the flange body is provided with an escape recessed portion for releasing the engagement state with the winding reel body, the flange body can be easily attached and detached from the take-up reel body, and there is no wobbling during winding.
It is possible to obtain a rolled paper take-up reel device that can stably wind up rolled paper.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a roll paper take-up reel device showing an embodiment of the present invention, Figs. 2a and b are explanatory diagrams of the operation of the same embodiment, and Fig. 3 is a conventional roll paper take-up reel. FIG. 4 is an enlarged sectional view showing a part of FIG. 3. 1... Take-up reel, 2... Take-up reel shaft, 3... Flange body, 8... Elastic tube, 8a...
Tapered part, 9... relief recessed part.

Claims (1)

[Scope of utility model registration request] A take-up reel body that has a flange at one end and is attached to the take-up reel shaft, an elastic tube attached to the outer periphery of the take-up reel shaft at the other end of the take-up reel body, and this elastic tube have no gaps between them. a flange body that has a cylindrical part that fits and is detachable from the take-up reel body; and a flange body that is formed on the outer periphery of the elastic tube and that engages with a locking part formed on the inner peripheral surface of the flange body. a tapered portion that prohibits movement in the extraction direction; and an escape recess that is formed on the outer periphery of the take-up reel shaft and causes the tapered portion to retract through elastic deformation and release the engaged state with the locking portion when the flange body is attached or removed. A roll-shaped paper take-up reel device characterized by comprising: