JPH10152250A - Paper sheet setting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet setting mechanism in which a holding member is surely abutted on an end face of a paper sheet roll, and the paper sheet roll is not played. SOLUTION: A paper sheet sewing mechanism is provided with a holding member 10 in which a support part 19 which is provided with a paper sheet core 2 to be supported by fitting a paper sheet roll 6 and has a claw 17 to be engaged with a latch 11 formed on a shaft part 4 of the paper sheet core 2, is connected to a paper sheet stop plate 16 abutted on the end face of the paper sheet roll 6 by an elastic member 20. Even when the width of the paper sheet roll 6 is not matched with the pitch of the latch 11, the paper sheet stop plate 16 is displaceable relative to the support part 19 by the elastic member 20, and the paper sheet stop plate 16 is surely abutted on the end face of the paper sheet roll 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper setting mechanism used in a label printer for printing on roll paper and holding a roll of paper wound with the roll paper.

[0002]

2. Description of the Related Art A first example of a conventional paper setting mechanism 1 will be described with reference to FIGS. First, as shown in FIG. 4, the paper setting mechanism 1 includes a paper core 2 and a holding metal 3. The paper core 2 includes a shaft 4 and a side plate 5.
And The shaft 4 fits and holds the paper roll 6. The side plate 5 is a reference for positioning the paper roll 6,
Here, the end face of the paper roll 6 abuts.

[0005] As shown in FIG. 5, two grooves 7 are formed in the shaft portion 4. The holding metal fittings 3 are attached to these grooves 7. The holding bracket 3 has two shaft fastening portions 8.
And a paper stopper 9. And the holding bracket 3
Is formed of an elastic material. The distance d between the shaft fastening portions 8 is slightly smaller than the distance D between the grooves 7.

When the paper roll 6 is held by the paper setting mechanism 1 having such a structure, first, the paper roll 6 is fitted to the shaft portion 4 so that the end surface thereof comes into contact with the side plate 5. Next, the holding member 3 is attached to the shaft portion 4 so that the shaft tightening portion 8 is along the groove 7, and is slid until the paper stopper 9 contacts the end face of the paper roll 6.

[0005] Therefore, the paper roll 6 is held by the paper core 2 in a state in which both ends are pressed by the holding metal 3 and the side plate 5.
And is held.

Here, in the conventional paper setting mechanism 1 described above, it is not easy to attach and remove the holding member 3. Then, in order to obtain a high holding force with such a paper setting mechanism 1, there is no other way but to increase the force with which the holding member 3 tightens the shaft portion 4. However, if the force of the holding metal member 3 is increased, it is difficult to attach to the shaft portion 4 and to slide after the attachment. That is, there is an inconvenience that it is not possible to achieve both the holding force of the paper roll 6 and the ease of handling the holding metal 3.

[0007] In order to cope with the inconvenience of the first example, a conventional paper setting mechanism 1 which achieves both a holding force and easy handling.
There is. A second example of the conventional paper setting mechanism 1 as one example will be described with reference to FIGS. The same parts as those shown in the first example are denoted by the same reference numerals, and description thereof is omitted. First, as shown in FIG. 6, the paper setting mechanism 1 includes a paper core 2 and a pressing member 10. A latch 11 is formed on the outer peripheral surface of the shaft portion 4. The latch 11 is formed by continuously forming a plurality of tooth profiles 13 having a surface 12 facing the side plate 5 and perpendicular to the axial direction. The shaft portion 4 has a groove portion 14 in which the latch 11 is not formed along the axial direction.

A holding member 10 is fitted on the shaft portion 4. The holding member 10 includes a disc-shaped paper stopper plate 16 having a hole 15 in the center, and claws 17 protruding from the hole 15. The pawl 17 is provided on the same plane as the paper stopper plate 16. In addition, as shown in FIG.
The latch 1 has a surface 18 facing the surface 12 of the latch 11.
Mesh with one. Therefore, when the latch 11 and the pawl 17 are engaged with each other, the sliding of the pressing member 10 in the direction in which the pressing member 10 comes off the shaft portion 4 is restricted.

When the paper roll 6 is held by the paper setting mechanism 1 having such a structure, first, the paper roll 6 is fitted on the shaft portion 4, and then the pressing member 10 presses the end face of the paper roll 6. Is fitted.

When the holding member 10 is removed from the shaft portion 4, the holding member 10 is rotated, and the claw 17 is aligned with a position corresponding to the groove portion 14 and is removed.

In the paper setting mechanism 1 shown in FIGS. 6 and 7, the paper roll 6 is held at an arbitrary position by the pressing members 10 abutting on both end surfaces of the paper roll 6, and the reference position. Is not the side plate 5.

[0012]

In the conventional paper setting mechanism 1 as shown in FIGS. 6 and 7, a holding member 10 fixed to a latch 11 holds the paper roll 6 therebetween. For this reason, when the width of the paper roll 6 does not match the pitch of the latch 11, the end face of the paper roll 6 and the pressing member 1
There is a disadvantage that a gap is formed between the paper roll 6 and the paper roll 6 in the axial direction.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a paper setting mechanism that can hold a paper roll reliably without rattling of the paper roll.

[0014]

According to a first aspect of the present invention, there is provided a paper roll comprising: a support having a pawl for engaging with a latch; and a paper core having a shaft formed with a groove and a latch formed on a side plate. A holding member, in which a paper stopper plate abutting on the end face is connected via an elastic member, is fitted. Therefore, the paper stopper plate has a structure that can be displaced with respect to the support portion. Then, the pawl is fixed to the latch such that the paper stopper plate is pressed against the end face of the paper roll, so that the paper roll is securely held.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described.
This will be described with reference to FIGS. Note that the same portions as those shown in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.
First, the paper setting mechanism 1 includes a paper core 2 and a pressing member 1.
It consists of 0. As shown in FIG. 2, the holding member 10 includes a support portion 19 and a spring member 20 which is an elastic member.
And a paper stopper plate 16. The support 19 is provided with the hole 15
And a claw 17. The base 21 of the claw 17 has a wavy shape and has elasticity.

Also, as shown in FIG.
The paper stopper plate 16 is not on the same plane as the paper stopper plate 16.
Is formed so as to be shifted to the opposite side of the sheet contact surface 22.
Further, the support portion 19 and the paper stopper plate 16 are connected via four spring members 20, and the paper stopper plate 16 is displaceable with respect to the support portion 19. The displaceable width is larger than the pitch of the latch 11.

A pressing member 23 is provided on the support 19 at a position facing the pawl 17. Pressing member 23
Has a wavy shape and is elastic. When the holding member 10 is fitted on the shaft 4, the pressing member 23
Presses the shaft portion 4 from the opposite side of the claw 17 to increase the holding force.

In such a configuration, as shown in FIG. 1, the pressing member 10 is fitted to the shaft portion 4 until the end surface of the paper roll 6 and the paper stopper plate 16 come into contact with each other.

Here, when the paper contact surface 22 is in contact with the end surface of the paper roll 6, the width of the paper
There is a case where the pawl 17 does not mesh with the tooth shape 13 because it does not match the pitch of 1. In this case, in the present embodiment, the nail 1
7 is moved in the axial direction, and meshes with the tooth profile 13 closer to the paper stopper plate 16. Then, the paper stopper plate 16 is pressed against the end face of the paper roll 6 by the elastic force of the spring member 20. Therefore, no gap is formed, and the paper roll 6 is securely held, so that rattling does not occur.

In practice, the paper roll 6 can be held at an arbitrary position by contacting the pressing members 10 with both end surfaces of the paper roll 6, and even when the reference position is not the side plate 5. it can.

[0021]

According to the first aspect of the present invention, the shaft having the grooves and the latches is brought into contact with the paper core provided on the side plate and the support having the claws engaging the latches and the end face of the paper roll. Since the pressing member connected to the paper stopper plate via the elastic member is fitted, the paper stopper plate has a structure that can be displaced with respect to the support portion, and therefore, the width of the paper roll does not match the pitch of the latch. Therefore, even when the pawl does not engage with the latch, the pawl is moved in the axial direction toward the paper stopper plate and engaged with the latch, so that the paper stopper plate is brought into contact with the end face of the paper roll by the elastic force of the elastic member. Crimped,
Since there is no gap, the paper roll is prevented from rattling,
The paper roll can be reliably held.

[Brief description of the drawings]

FIG. 1 is a perspective view of a paper setting mechanism according to an embodiment of the present invention.

FIG. 2 is a right side view of the pressing member.

FIG. 3 is a sectional view taken along the line AOA in FIG. 2;

FIG. 4 is a perspective view showing a first example of a conventional paper setting mechanism.

FIG. 5 is a perspective view showing the holding member and a shaft.

FIG. 6 is a perspective view showing a second example of a conventional paper setting mechanism.

FIG. 7 is an enlarged front view showing the latch and the pawl.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper setting mechanism 2 Paper core 4 Shaft part 5 Side plate 6 Paper roll 10 Press member 11 Latch 14 Groove part 16 Paper stopper plate 17 Claw 19 Support part 20 Elastic member

Claims (1)

[Claims] 1. A paper core having a groove formed along an axial direction and a shaft formed with a latch standing on a side plate, and a support having a claw engaging with the latch and fitted to the shaft. A paper setting mechanism, comprising: a paper stopper plate that contacts an end surface of the paper roll with a pressing member connected via an elastic member.