JPH0518358Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to improvements to rollers that can be applied to typewriters, printers, facsimile machines, telex machines, copying machines, and other office equipment or machine elements. be.

(Challenges with conventional technology) Usually, this type of roller, especially for office equipment,
There are rollers for feeding paper, rollers for printing, or rollers that have both functions. Specifically, the outer periphery of a metal core material is coated with rubber, and the core material has metal bearings on both ends. It is known to have a core material of

Conventional rollers require conditions such as durability, light weight, economic efficiency, low noise, and ease of mass production, and there is a demand for the development of rollers for office equipment and the like that satisfy these requirements.

By the way, with the rapid progress of computers and the expanded use of electronic office equipment, the development of the rollers mentioned above has also been remarkable.

The inventor has pursued the necessary conditions such as durability, lightness, economy, low noise, and ease of mass production, and has been engaged in research and development of rollers for office equipment that meet these conditions. We provide Japanese Patent Application Laid-Open No. 61-44665, Utility Application No. 1-171649, and other technologies.

In particular, with conventional rollers, when feeding paper, it is normal to feed paper from a position excluding the vicinity of both ends of the roller, that is, from the center, but as the width of the paper becomes wider, both sides of the paper are fed by the rollers. If the contact reaches near both ends of the paper, the feeding speed of the paper will increase, which may result in uneven paper feeding speed and may cause problems during printing or the like.

Conventionally, in order to solve the above-mentioned problems, measures have been taken such as adding a tapered shape to the center of the roller or wrapping a slippery member around both ends of the roller.

The purpose of the present invention is to provide a roller that is lighter in weight, more economical, has lower noise, is more durable, and is easier to mass produce than conventional rollers for office equipment. The purpose of the present invention is to provide a roller that efficiently eliminates the above problems.

(Means for solving the problem) In order to achieve the above object, the present invention uses a paper tube member formed by wrapping sound absorbing paper such as cone paper around the outer peripheral surface of a long core material. Then, an elastic member made of a material such as rubber or synthetic resin is coated on the outer peripheral surface of the paper tube member via a soft adhesive layer, and both end surfaces of the paper tube member are placed concentrically with the elastic member. In addition to shielding with a short cylindrical end member provided at a position, the outer diameter of the end member and the outer diameter of the elastic member are formed to be approximately the same, and this end member has a lower coefficient of friction than the above-mentioned elastic member. It was formed by In this case, it is preferable that the end member is made of one of metal, synthetic resin, rubber, etc., or a composite material thereof. Also,
The core material is preferably made of metal or synthetic resin, and is preferably formed by wrapping sound-absorbing paper in a planar manner.

(Function) The roller according to the present invention is not only lightweight, but also has an elastic member provided on the outer peripheral surface of the core material through a paper tube member formed of sound-absorbing paper such as cone paper.
Compared to conventional products with rubber layers, it has the effect of significantly dampening impact noise. Further, since the cylindrical paper tube and the paper tube member are formed by wrapping sound-absorbing paper, a highly accurate and highly durable paper tube can be formed at a low cost. Moreover, since the layer of the elastic member can be formed thinly using the paper tube member, the thermal expansion of the elastic member is reduced, and therefore the swelling of the roller is extremely small, the possibility of misalignment of the axis is eliminated, and the paper can be rolled smoothly. can be sent to.

Furthermore, since the soft adhesive layer is provided between the outer circumferential surface of the paper tube member and the inner circumferential surface of the elastic member, further sound-dampening effect is exhibited by the sound-dampening effect of the soft adhesive material.

In particular, the end face members provided at both ends of the paper tube member are made of a material with a lower coefficient of friction than the elastic member, so that when paper is fed, both ends of the paper are made to slide easily, and the parts excluding both ends are Therefore, the paper feeding action can be performed efficiently, and since the end face members shield both end faces of the paper tube member, it is also possible to protect the end faces of the paper tube member.

The above-mentioned roller is lightweight and has a noise-reducing function, so it is particularly suitable for the platen roller of recent office automation equipment.For example, the energy of the drive source such as a motor in the equipment is small, and it can be made more compact. Of course, the cost of the entire product can be significantly reduced.

(Example) An example of a roller for office equipment or the like according to the present invention will be described with reference to the drawings.

In FIG. 1, the first example is a paper formed by wrapping paper 2a in a planar manner around the outer peripheral surface of a core material 1 made of metal or synthetic resin, as shown in FIGS. 2 and 3. A tube member 2 is provided, and the outer peripheral surface of the paper tube member 2 is covered with an elastic member 3 made of a material such as rubber or a synthetic resin layer. In FIGS. 2 and 3, the core material 1 is connected to the drive shaft 2d of the plane winding machine via the fixture 2c, and the center of the paper tube and the grain of the paper 2a are parallel to each other from the paper roller 2b. It is wound with flat winding. In this case, soft paper,
For example, when impregnated paper or Japanese paper is wrapped around the paper tube as an upper layer or an intervening layer, the sound is significantly attenuated. Furthermore, if the paper tube member 2 is wrapped with sound-absorbing paper such as cone paper used in speakers, a remarkable sound deadening effect can be seen. Select appropriate cone paper suitable for the roller.

This core material 1 includes all commonly used or known core materials, and includes a paper tube member 2 as a core material used in this type of roller.
It goes without saying that a configuration in which the elastic member 3 is covered with a .

Further, as shown in FIG. 4, a soft adhesive layer 6 is provided between the outer peripheral surface of the paper tube member 2 and the inner peripheral surface of the elastic member 3. For example, a gel, a sealant, or a foamed resin that does not lose its flexibility after the adhesive dries is used, and the soft adhesive layer 6 and the conductive coil 7 with antistatic effect are placed in concentric positions. Arrange. It was confirmed that this soft adhesive layer 6 not only has an adhesive effect but also has a sound absorbing function, and thus has a sound damping effect.

Further, both end faces of the paper tube member 2 are shielded by end face members 8, and the material of this end face member 8 is appropriately selected from one of metal, synthetic resin, rubber, etc., or a composite material thereof. Further, both end surfaces of the paper tube member 2 may be treated with an adhesive, or a double-sided adhesive sheet may be provided on the adhesive surface of the end member 8.

In this case, as shown in FIG.
If it is made of a member having a lower coefficient of friction than the elastic member 3, both ends of the paper will be made to slide easily at the same time as the end surface treatment of the paper tube member 2 is performed, and the paper will be fed from the area excluding both ends, which will improve the paper feeding. It also improves paper functionality.

FIG. 5 is similar to the example of FIG. 1, but only the differences will be described.

A paper tube member 10 formed by similarly wrapping paper in a flat manner is provided on the outer circumferential surface of a cylindrical paper tube 9 formed by wrapping paper in a flat manner. An elastic member 11 made of a material such as rubber or synthetic resin is covered, and bearing sleeves 12 made of metal or synthetic resin are provided at both ends of the cylindrical paper tube 9. In this case, the end face member 12a of the bearing cylinder 12 is provided integrally or separately, and both end faces of the cylindrical paper tube 9 are connected to the sealing plug 1.
3, or a sealing portion 13a is formed integrally with the bearing sleeve 12.

As shown in FIG. 6, a gear 15 may be provided integrally with the bearing sleeve 12 or separately.

Next, the operation of the above embodiment will be explained.

The roller in this example is a cylindrical paper tube 9 which is a core material.
Alternatively, since the elastic members 3 and 11 are provided on the outer peripheral surface of the core material 1 via the paper tube members 2 and 10, it is not only lightweight, but also allows for a softer sound compared to conventional products with a rubber layer. At the same time, impact noise can be significantly reduced. Moreover, durability is improved by providing bearing tubes 12 with end-face treatment applied to both ends of the cylindrical paper tube 9. In addition, since the cylindrical paper tube 9 and the paper tube members 2 and 10 are formed by wrapping paper while applying an adhesive, highly accurate and highly durable paper tubes can be formed at low cost, and especially for cones. When paper is used, it has a sound absorbing effect and a further sound-deadening function, and since the layers of the elastic members 3 and 11 can be formed thinly by the paper tube members 2 and 10, the coefficient of thermal expansion is correspondingly lower. Therefore, swelling of the roller becomes extremely small.

In addition, a soft adhesive layer 6 is provided between the outer circumferential surfaces of the paper tube members 2 and 10 and the inner circumferential surfaces of the elastic members 3 and 11, and a conductive coil 7 is attached concentrically to the soft adhesive layer 6. When placed in the position, the soft adhesive layer 6
In addition to the silencing effect of the conductive coil 7, since the conductive coil 7 is heavier than the soft adhesive 6, it has a vibration damping effect, resulting in even more silencing effect. It also has an antistatic effect, making it possible to feed the paper even more smoothly. In this case, the conductive coil is connected to a conductive core material or other conductive member to prevent charging by a self-evident grounding structure.

In particular, since the end members 8 and 14 provided at both ends of the paper tube members 2 and 10 are made of low-friction members compared to the elastic members 3 and 11, both ends of the roller tend to slip, and the paper excludes both ends. Since the paper is fed at the portion where the paper is removed, paper can be fed efficiently. Furthermore, since the end face members 8 and 14 shield both end faces of the paper tube members 2 and 10, the paper tube members 2 and 10 are protected from moisture in the outside air.
It is also possible to protect the end face of the

The above-mentioned roller is lightweight and has a noise-reducing function, so it is particularly suitable for the platen roller of recent office automation equipment.For example, the energy of the drive source such as a motor in the equipment is small, and it can be made more compact. Of course, the cost of the entire product can be significantly reduced.

(Effects of the invention) As is clear from the above, the invention provides a roller that is more economical, durable, and mass-producible than conventional rollers for office equipment, etc. In particular, it has become possible to propose a roller that is lightweight and has an effective noise-reducing function.

[Brief explanation of drawings]

Figures 1 to 6 show examples of rollers for office equipment, etc. in accordance with the present invention. Figure 1 is a sectional view showing an example of the roller, and Figure 2 shows the state of flat winding. A plan view, FIG. 3 is a side view of the same as above, FIG. 4 is a longitudinal side view of FIG. 1, FIG. 5 is a sectional view showing another example of the roller, and FIG. FIG. 1... Core material, 2, 10... Paper tube member, 3, 11
...Elastic member, 6...Soft adhesive layer, 8, 14
... End member, 9 ... Cylindrical paper tube (core material).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A paper tube member formed by wrapping sound-absorbing paper such as cone paper around the outer circumferential surface of a long core material is fitted onto the outer circumferential surface of the paper tube member, and A short cylindrical end member in which an elastic member made of a material such as rubber or synthetic resin is covered with a soft adhesive layer, and both end faces of the paper tube member are placed concentrically with the elastic member. and the outer diameter of the end face member and the outer diameter of the elastic member are formed to be substantially the same, and the end face member is formed of a member having a lower coefficient of friction than the above-mentioned elastic member. etc. Laura. (2) The roller for office equipment, etc. according to claim 1, wherein the end face member is formed of one of metal, synthetic resin, rubber, etc., or a composite material thereof. (3) The roller for office equipment, etc. according to claim 1 or 2, wherein the core material is made of metal or synthetic resin. (4) A roller for office equipment or the like according to any one of claims 1 to 3, wherein the core material is formed by winding sound-absorbing paper in a flat manner.