JPS6077074A - Roll paper holder - Google Patents

Abstract

PURPOSE:To firmly and integrally couple a shaft member, a roll paper support member and a paper spool for a roll paper together, by forcedly fitting the shaft member into the cylindrical section of the roll paper support which is beforehand fitted into the cylindrical section of the roll paper. CONSTITUTION:After the cylindrical sections 6 of a pair of right and left roll paper support members 5 are fitted, respectively, into both ends of paper spool 2 for a roll paper 1, a support shaft 10 is pushed into the cylindrical section 6 of each roll paper support member. At this time, the outer peripheral wedge surface of the front end section 11 of the support shaft is made into press-contact to the inner peripheral surface of the front end section 7 of the cylinder section 6 which is therefore radially enlarged together with the cylindrical section 8 adjacent to the former so that the outer peripheral surface of the cylinder section 8 is made closely contact with the inner surface of the paper spool 2 for the roll paper 1. Frictional force due to the press-contact against the inner peripheral surface of the cylindrical front end part 7 and as well the retracting force of a tension coil spring 13 causes the spool 2, the roll paper support member 5 and the support shaft 10 are integrally coupled together.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Fields of Application The present invention is applicable to image forming apparatuses (e.g. multifunction machines, printing machines, factor 91J, linters, etc.). This relates to a roll arsenal holder.

Conventional paper holder O1 used in an image forming apparatus such as a conventional cylindrical part 02, as shown in FIGS. 1 to 4, has a flange 03 and the same cylindrical part. The cylindrical portion 02 has a plurality of notches 0 oriented in the axial direction.
Tapered male threads 07 are cut on the outer periphery WIS06 of the cylinder @02 (formed at equal intervals in the circumferential direction),
The nut 04 is removably attached to the same taper male thread 07 VC
We are now able to meet for C minutes.

The side surface of the flange 03σ)4111andσ) where the cylindrical portion 02 is not formed is in contact with the contact surface with the end edge O1O of the roll assembly 09.

Roll paper collection a 09 in which the roll paper 012 is wound around the abrasive paper tube O1l, the roll holder 0 LVC attachment 0 has the flange 03 of the pair of left stones.
(Position the roll paper collection a 09 and support shaft 0
The cylindrical part 02 of the pair of flanges 03 and the roll a paper tube 011 are passed through, and the sides of the pair of flanges 03 are pressed against the edge of the roll arsenal assembly 09.
4. When the notch 05σ [[] is removed, the cylinder VA62 is reduced in the radial direction. As the paper assembly 09 is held in the holder 0IVc, it becomes VC.

In this RVC conventional roll paper holder, the axial length of the support shaft 08 is longer and the weight is heavier.
The VC to be inserted into and removed from the IVc is oriented in the axial direction of the support shaft 08σ], and has the disadvantage that there must be a space at least 1 axial length σ).

'1fTCA O% E o wide row l
In the case of paper rolls, the support shafts 08q, 2) have large shaft lengths and diameters, and the weight and inertia of the roll paper holder 01 are large, causing problems in speeding up retrieval, etc.

Purpose of the Invention In order to overcome these difficulties, the object is to reduce the weight of the roll paper holder and to easily attach the roll paper holder to the roll paper holder. Moreover, it provides a roll paper router 7 that can be inserted and removed even if there is not a large space, and has a simple structure.

According to the structure of the invention, in a state where the spring is pulled out from the cylindrical part against the spring force and the shaft member is pulled out from the cylindrical part, the roll paper lt tube part is inserted into the cylindrical part After fitting L, by pushing the coaxial part into the cylindrical part, the @ member, the roll paper support part side, and the roll paper tube part are firmly and integrally connected to each other. It is possible to take a roll of paper on a roll.

By pulling out the 11 parts of the 1 lq in the loaf paper holder's upright state, the shaft ms material, the roll assembly support member, and the roll paper tube part are integrated. The connection can be released and the roll paper holder can be removed from the roll paper.

EXAMPLE An example of the invention shown in FIGS. 5 to 8 will be described below.

Reference numeral 1 is a fixed roll of paper wound into a spiral shape at a paper tube portion 2Vc, and the roll 1 is rotatably supported by a paper feeder 3 of a Sakura H machine (not shown) via a roll shoe holder 4vc (described later). ing.

In addition, the roll paper holder 4 includes a roll paper support member 5 made of synthetic resin that is relatively easily deformed, a support shaft 10 that is fitted into a cylindrical body 6 of the roll paper support material 5, It consists of a tension fill spring 13 that urges the cylindrical body 6 toward the back.

Further, the cylindrical body 6σ) of the roll set support member 5 is formed into a tapered conical shape, and can come into contact with the side edge Vc of the roll pongee 1 on the base end side of the cylindrical body 6. A flange 9 is integrally formed with the cylindrical body 6.

Furthermore, the tip part 11 of the support shaft (0σ) is also formed in the shape of a tapered conical surface, but its axial inclination angle is smaller than the inclination angle of the tip gha part 7 of the cylindrical body. When the support NIO is pushed inwardly into the roll assembly support member 5σ) and the cylindrical body 6, the support shaft tip 11 touches the inner circumferential surface of the cylindrical body tip 7. Ahead of contact! The 17ti portion 7 and the cylindrical portion 8 adjacent thereto are expanded and expanded in the radial direction to form a gold-like shape.

In addition, the tension coil spring 13 is integrally connected to the annular groove 12 at the tip 11 of the support shaft 10, and the other end of the tension coil spring 13 is connected to the adjustment screw 14σ) in the annular groove. 15, and the adjustment screw 14Q) tip! l! Pass the tip i7 of the cylindrical body through the hole provided in part 7, and insert the nut 1 at the tip of the adjustment screw 14σ).
The 6 pieces are now screwed together.

The specific embodiment illustrated in FIGS. 5 to 8 is constructed as described above, so that the support 11i11110 roll paper support 5σ) cylindrical body 6 resists the spring force of the tension coil spring 13. In a state where it is pulled out a little further outward,
The cylindrical body 6 of the left and right pair of roll group support members 5 and the roll paper l
After inserting into both shafts of the paper tube 2 - the support shaft 10
When the support shaft is pushed into the cylindrical body 6, the outer peripheral surface of the support shaft tip round part 11 is pressed against the inner peripheral surface of the cylindrical body tip part 70, and the cylindrical body The first cylinder part 7 and the fixed date cylinder part 8 adjacent thereto are expanded and expanded in the radial direction, and the outer peripheral surface of the cylinder part 8 is the inner peripheral surface of the opening 1; It is secretly printed.

Even in this state, the tension coil spring 13 has a tension of 1ΦI.
J song 3σ) The support shaft 10 is attached to the cylindrical body 6 by the spring force.
The outer periphery of the support shaft tip II (I
The friction force due to the E contact and the retraction spring force from the tension coil spring 13 cause the paper tube 2 and the roll paper support portion 5 to
What happens when the and support fill 11Gl are combined together?

'If the roll paper IVc is in the loaded state, the support shaft 10Y is moved in the pulling direction by overcoming the frictional force and the retraction spring force.The support ff1l1
If 110 K is added, the same support shaft 10 &! It is pulled out, and the pressure contact between the outer circumferential wedge surface of the support shaft tip 11σ) and the inner circumferential surface of the cylindrical body tip 7 is released, and the cylindrical body tip ends! 7 and the adjacent cylindrical hole 8 are contracted, and the outer circumferential surface of the cylindrical portion 8 is separated from the inner circumferential surface of the rolled paper tube 2, and the rolled paper support member 5 is in a state where it can be taken out from the rolled paper tube 2. becomes.

In the above embodiment, the roll paper holder 4 (n support ff1i control '5 is present only near both recesses in the paper tube 2 of the roll a1, and there is nothing in the center of the paper tube 2, so conventional α)
It is lighter than the one in which the shaft is inserted over the entire length of the paper tube 2 as shown in item Q).

In addition, the support shaft 10 can be pushed in or pulled out.
The roll paper 1 can be easily handled in the embodiment shown in Figures 5 to 8 with the roll paper support VA.
Is there a slit or thin wall in the cylindrical body 6 of the cover 5? Although not formed, two or more slits Z oriented in the axial direction are formed in the cylindrical body 6 at equal intervals along the circumferential direction, or
When the cylindrical body 6 is formed in this way, the cylindrical body 6 can be easily elastically deformed, and the support shaft 10
The push-in or pull-out force applied can be reduced.

Effects of the Invention In the present invention, as previously described, the roll 1tVC and the roll holder can be easily removed by simply pushing in or pulling out the material without requiring any tools. .

In addition, in the present invention, the roll paper holder is fitted only at both corners Mi of the roll paper, and there is nothing inside the central part VC of the roll paper, so it is possible to reduce the grip of the entire roll paper. .

[Brief explanation of drawings]

il[iN is a side view of a conventional roll paper holder, FIG. 2 is a perspective view, FIG. 3 is a plan view, FIG. 4 is a front sectional view, and FIG. 5 is an uninvented σ) Roll of one embodiment FIG. 6 is a perspective view, FIG. 7 is a front view, and FIG. 8 is a front sectional view. 1... Roll paper, 2... Paper tube, 3... Picture paper section, 4
... Roll paper holder, 5... Roll paper support member,
6...Cylindrical body-7''...Tip part, 8...Cylindrical part, 9
... flange, 10 ... support shaft, 11 ... tip, 12 ... annular groove, ]3 ... tension coil spring %
+4... Adjustment screw, 15... Annular groove S16...
Natsuto. Agent: Patent attorney Nozomi Ehara, 2 other names: 1 picture, 2 pictures, 3 pictures, 4 pictures, 5 pictures.

Claims (1)

[Claims] A roll paper support member having a cylindrical part that can be removably fitted into a roll paper tube section and can be elastically deformed to closely follow the circumferential surface of the paper tube section, and a flange that can support the roll paper edge Z. , the roll paper support member σ) a member having a slanted surface that fits into the cylindrical part and slides on the inner peripheral surface of the cylindrical part to expand and expand the cylindrical part in the radial direction; and a coaxial member. A roll paper holder comprising a spring assembly that maintains the expanded state of the cylindrical portion of the roll paper support 1 by applying an axial force ζ1.