JPH0726657Y2 - Recording paper holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a roll-shaped recording paper holding device used in a recorder.

<Prior Art> FIG. 3 shows a conventional example of a recording paper holding device of this type. In the figure, reference numeral 1 is a shaft having small-diameter portions 1a and 1b (1b is not shown in the figure) formed at both ends thereof. Reference numerals 2 and 3 are flanges having step portions 2a and 3a, respectively, and are attached to both sides of the shaft 1. Rolled recording paper (hereinafter referred to as roll paper) is loaded on the stepped portions 2a and 3a. 4,5 is shaft 1
The key holding grooves 4a and 5a are formed in the plate for holding. 6 is a leaf spring bent in a V shape and has grooves 4a, 5
It is provided on the side surface of the plate 4 corresponding to the key portions 4b and 5b of a.

In such a structure, roll paper is loaded on the shaft 1 by utilizing the steps 2a, 3a of the flanges 2, 3 attached to the shaft 1. The shaft 1 on which roll paper is mounted has a groove 4 in which narrow diameter portions 1a and 1b formed on both ends of the shaft 1 are formed on the plates 4 and 5.
Insert a and 5a into the key portions 4b and 5b as guides. When the insertion is completed, the small-diameter portion 1a of the shaft 1 is pressed by the leaf spring 6, and the roll paper is held between the plates 4 and 5.

Although the roll paper holding device having such a structure has been used conventionally, the shaft 1 loaded with roll paper due to a shock or a change in posture when the recorder equipped with the roll paper holding device is moved. May be disengaged from the grooves 4a and 5a of the plates 4 and 5, and thus may be damaged.

<Problems to be Solved by the Invention> The present invention was made in order to solve the above-mentioned problems of the conventional holding device, and its purpose is small and does not easily come off from the plate. An object is to provide a roll paper holding device.

<Means for Solving the Problems> In order to achieve the above object, the present invention mounts a bearing portion for holding a shaft so as to be axially movable via a coil spring, and forms the bearing portion on a plate. The roll paper is held by being inserted into the hole. Hereinafter, examples will be described in detail.

<Embodiment> FIG. 1 is a configuration perspective view of an embodiment of a holding device according to the present invention. In FIG. 1, 10 is a shaft, and 20 and 30 are mounting members. FIG. 2 shows the shaft 10 and the mounting members 20 and 30.
It is an expanded sectional view of a part. This will be described below with reference to FIGS. 1 and 2.

In the mounting member 20, 21 is a cylindrical flange with a bottom, which is fixed in the axial direction of the shaft 10 and is mounted on one end side of the shaft 10 so as to be rotatable with friction in the circumferential direction. Reference numeral 22 denotes a bearing portion, which is a cylindrical body 22a, an annular body 22b in which a notch 22b 'is formed in a circumferential circle on one end side thereof,
It is composed of a bottomed cylindrical body 22c, a coil spring 22d, and a screw 22e. One end of the cylindrical body 22a is inserted into the annular body 22b, and the bottomed cylindrical body 22c is press-fitted inside the cylindrical body 22a. The other end of the cylindrical body 22a is inserted into one end of the shaft 10. A screw 22e having a coil spring 22d attached thereto penetrates the bottom of the bottomed cylindrical body 22c, and the tip of the screw 22e is screwed into one end of the shaft 10.

The bearing portion 22 having such a configuration cannot rotate in the circumferential direction of the shaft 10, but if the opening side of the bottomed cylindrical portion 22c is pressed against the spring force of the coil spring 22d, the bearing portion 22 will be rotated. Move in the axial direction of. When the pressing force is removed, the spring force of the coil spring 22d causes the bearing portion 22 to return to the original position.

In the mounting member 30, 31 is a bottomed cylindrical flange. A through hole 31b is formed in the bottom portion 31a of this flange. Reference numeral 32 denotes a bearing portion, which is a cylindrical body 32a, an annular body 32b in which a notch 32b 'is formed in a circumferential circle on one end side thereof, and a cylindrical body 3 having a convex cross section
2c, coil spring 32d, and cylindrical body 32e having a T-shaped cross section
Is made up of. The annular body 32b is inserted into one end of the cylindrical body 32a, and the cylindrical body 32e is press-fitted into the cylindrical body 32a. Thus, the annular body 32b can rotate the cylindrical body 32a in the circumferential direction. The cylindrical body 32c having a convex cross section is press-fitted into the cylindrical body 32a such that the convex portion is adjacent to the annular body 32b. The coil spring 32d is attached to the cylindrical body 32a. The cylindrical body 32c is provided with a pin 32f.
A hole 31b is formed in the bottom portion 31a of the chart loading member 31 corresponding to 32f.

In this way, the cylindrical body 32a, the annular body 32b, the cylindrical body 32c, and the cylindrical body 3
The bearing portion 32 composed of 2e is integrated, and the integrated bearing portion 32 has a cylindrical body 32c portion so that the pin 32f is inserted into the hole 31b formed in the bottom portion 31a of the flange 31. It is mounted inside the flange 31 via 32d. 32g and 32h are stoppers, the stopper 32g is attached inside the flange 31, and the stopper 32h is attached to the other end side of the shaft 10. The stopper 32g prevents the bearing 32 from protruding from the flange 31 by the coil spring 32d. The bearing portion 32 having such a configuration is inserted into the cylindrical body 32a until the other end of the shaft 10 is stopped by the stopper 32h.

As described above, the mounting member 30 in which the flange 31 and the bearing portion 32 are integrally formed can be freely removed from the shaft 10 and the cylindrical body 32e.
When is pressed in the axial direction against the spring force of the coil spring 32d, the bearing portion 32 moves in the axial direction of the shaft 10. When the pressing force is removed, the spring force of the coil spring 32d restores the original position.

Reference numerals 40 and 50 denote plates fixedly arranged at a predetermined interval, and each plate has an annular body 22b of the bearing portions 22 and 32 of the mounting members 20 and 30 and notch portions 22b 'and 32b of the annular body 32b. Holes 41 and 51 into which'is inserted are formed.

In the recording paper holding device having such a configuration, in order to load the roll paper, the mounting member 30 is removed from the shaft 10, and the shaft 10 is inserted into the core tube around which the roll paper is wound. Next, one end of the core tube is attached to the flange 21 of the mounting member 20, and then the flange 32 is attached to the other end side of the core tube. As a result, the roll paper is held on the shaft 10. In this way, the bearing portion in which the shaft 10 holding the roll paper is provided at both ends thereof
22 and 32 annular body 22b and annular body 32b are pressed against the spring force of the coil springs 22d and 32d at the same time and pushed inward so that they slide between the left and right plates 40 and 50 and the holes 41, 51
Move to the position corresponding to. Then, the spring forces of the coil springs 22d and 32d return the bearing portions 22 and 32 to their original positions, and as a result, the cutout portions 22b 'and cutout portions 32b' in the annular body 22b and the annular body 32b form the plate 40. And 50 holes 41,51
Is fitted to. As a result, the shaft 10 loaded with the roll paper is loaded between the plates 50 and 60, that is, the recorder.

When removing the roll paper, the left and right bearings 22 and 32 may be pushed inward to release the fitting between the holes 41 and 51 of the left and right plates 40 and 50, and then the above operation may be performed in reverse.

<Effects of the Present Invention> As described above, according to the present invention, the roll paper support shaft does not come off unless an external force is intentionally applied. Does not come off or get damaged. Also, since the roll paper attachment / detachment mechanism is concentrated on the roll paper support shaft, it is only necessary to make holes in the left and right plates that hold the roll paper, and as a result, the shape of the roll paper storage section can be simplified. Therefore, there is a feature that a compact design such as unitization is possible.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the device according to the present invention, FIG. 2 is an enlarged cross-sectional view of an essential part of FIG. 1, and FIG. 3 is a block diagram of an example of a conventional device of this type. 10 ... Shaft, 20,30 ... Mounting member, 21,31 ... Flange, 2
2, 32… Bearing part.

Claims (1)

[Scope of utility model registration request] 1. A first attachment comprising a flange fixed to one end of the shaft in the axial direction of the shaft and a bearing portion attached to the shaft movably in the axial direction of the shaft via a coil spring. A second mounting member detachably mounted on the other end side of the shaft, which includes a member, a flange, and a mounting member connected to the flange and movable in the axial direction of the shaft by a coil spring; A pair of plates, each of which is fixedly arranged at a predetermined interval and has a hole into which each of the bearings is inserted, is provided, and the roll-shaped recording paper is mounted on the shaft through the both flanges. , The bearing portions on both sides of the shaft are pressed against the spring force of the coil spring in the axial direction of the shaft to form the plate on the plate. By releasing the pressing force in parts, the recording paper holding apparatus constructed the bearing portions so as to hold in the hole.