JPH041156Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a mounting structure for roll paper for printing.

[Prior art and its problems] Conventionally, in portable small electronic calculators,
Some printers are equipped with a roll paper for printing, and information such as calculation data and the calculation results is printed on the roll paper for printing. Such a mounting structure for printing roll paper has two holding arms that can be elastically deformed (bendingly deformed) protruding diagonally upward from the back wall of the equipment case.
By bending this holding arm outward and inserting a holding protrusion provided on the tip side into the cylindrical core of the printing roll paper, the printing roll paper is rotatably held.

In such a mounting structure for printing roll paper, when removing the printing roll paper from the holding arm, the holding arm must be bent outward to be able to be removed. A hook portion for hooking a finger or the like is provided to protrude laterally. However, if the length of such a hook protruding to the side is short, it will be difficult for fingers etc. to catch it, making it difficult to remove the roll paper for printing. This had the disadvantage that the hook would get in the way when carrying it.

[Purpose of the invention] This invention was made in view of the above-mentioned circumstances, and its purpose is to create a roll paper for printing that can be easily and easily attached and detached, and that is highly portable. The objective is to provide a mounting structure for

[Main points of the invention] In order to achieve the above-mentioned purpose, this invention consists of an operating body in which a roll paper attachment part and a pressing part are provided on opposite sides of a supporting part, and a frame body surrounding this operating body. The operation body is integrally connected and molded only with the supporting part, and the roll paper attachment part is pulled in by pressing the pressing part of the operation body to attach and detach the roll paper for printing.

[Embodiment] An embodiment in which this invention is applied to a portable small-sized electronic calculator will be described below with reference to FIGS. 1 to 4.

FIG. 2 shows a printer section of a small electronic calculator, and numeral 1 in the figure is an equipment case. A printer (not shown) is provided inside this device case 1, and two holding members 3, 3 for holding a roll paper 2 for printing are detachably attached to the back side. The printer sequentially prints predetermined information on printing roll paper 2 fed into the equipment case 1 and sends it out above the equipment case 1.
This sent out printing roll paper 2 is transferred to the device case 1.
It is designed to be cut with a cutter 1a provided on the top surface.

As shown in FIGS. 1 and 3, the holding members 3, 3 that hold the roll paper 2 for printing are each made of an operating body 4 and a frame body 5 integrally molded from synthetic resin, and are symmetrically arranged. It's summery. That is, the operating body 4
The roll paper 2 for printing is removably held by elastic deformation (flexural deformation), and a support part 4b is provided below the middle of the band-like plate part 4a, and a roll paper attachment part is provided on the upper end side. 4c is integrally formed with a pressing portion 4d on the lower end side. In this case, the support portion 4b is the center of rotation of the plate portion 4a of the operating body 4, and is integrally connected to a frame body 5, which will be described later. The roll paper attachment part 4c is the cylindrical core 2a of the roll paper 2 for printing.
It is inserted into the inside and rotatably holds the printing roll paper 2, and has a cylindrical shape and is provided so as to protrude inward from the inside surface (the surface facing the holding members 3, 3). The pressing part 4d rotates the plate part 4a in the direction of the arrow X around the supporting part 4b when pressed by a finger or the like, and has a cylindrical shape and has a cylindrical shape,
3 protrudes slightly outward from the opposite surface.

Further, the frame body 5 surrounds the operating body 4, and is formed by integrally molding a frame-shaped portion 5a and a mounting portion 5b.
That is, the frame-shaped part 5a holds the operating body 4, and has _{an opening 5a3 in which the operating body 4 is arranged in a plate-shaped part 5a2 having} a frame part _5a1 around it. The operating body 4 is arranged with a predetermined distance a, and both ends of the support portion 4c of the operating body 4 are integrally connected to the frame portion _5a1 , and the whole is diagonally viewed from the back of the device case 1. It is arranged to face upward. As shown in FIG. 3, the attachment part 5b is removably attached to the attachment part 6 provided on the back of the device case 1, and the engagement part 5
b ₁ and a locking hook portion 5b ₂ , and is provided at the lower end of the frame 5. The engaging portion _5b1 engages with a recess 6a and a convex portion 6b provided on the upper part of the mounting portion 6 of the equipment case 1, and the locking hook portion _5b2 engages with a through hole 6c provided in the mounting portion 6. inserted into the
A recess 6d whose lower end is provided on the lower surface of the mounting portion 6
The frame body 5 is thereby attached to the mounting portion 6 of the equipment case 1.
In addition, in order to remove it, push the lower end of the locking hook part _5b2 in the direction of arrow Y to release the engagement.

Next, the operation of the mounting structure for printing roll paper 2 configured as described above will be explained.

First, when attaching the two holding members 3, 3 to the mounting parts 6, 6 provided on the back surface of the equipment case 1, as shown in FIG. 4c facing each other, and in this state, as shown in FIG.
Attach b to the mounting parts 6, 6, respectively. That is,
Insert the locking hook part _5b2 of the mounting part 5b into the through hole 6c of the mounting part 6, and engage the locking part _5b1 of the mounting part 5b with the concave part 6a and the convex part 6b of the mounting part 6. The lower end of the locking hook portion _5b2 is locked to the bottom surface of a recess 6d provided on the lower surface of the mounting portion 6. Then, the mounting part 5b is attached to the mounting part 6, and the frame 5 is arranged to extend obliquely upward from the back side of the device case 1, as shown in FIG. In addition, when removing the holding members 3, 3, the locking hook portion 5
Simply press the bottom end of b ₂ in the direction of arrow Y to release the engagement.

In this way, when attaching the printing roll paper 2 to the holding members 3, 3 attached to the equipment case 1, first, as shown in FIG. 4, at least one of the holding members 3, 3 ( Press the pressing portion 4d of the holding member 3 (on the right side in the figure) from the outside with a finger or the like. Then, the operating body 4 flexibly deforms (elastically deforms) and rotates in the direction of the arrow X around the support portion 4b, and the roll paper attachment portion 4c provided on the upper end side of the operating body 4 moves as shown by the dotted line in FIG. It is pulled outward as shown.
When the roll paper mounting portion 4c is pulled out in the direction of the arrow X in this manner, the printing roll paper 2 can be placed between the holding members 3, 3. Therefore,
One end of the cylindrical core 2a of the printing roll paper 2 is inserted into the roll paper attachment part 4c of the holding member 3 on the left side, and the other end is made to correspond to the rolled paper attachment part 4c pulled out on the right side. In this state, when you release your finger or the like from the pressing part 4d on the right side, the operating body 4 returns to its original state by its own elastic force. Insert it into the other end of 2a. As a result, the printing roll paper 2 is rotatably attached to the roll paper attachment portions 4c, 4c of the holding members 3, 3. The printing roll paper 2 attached in this way is drawn into the inside of the equipment case 1 from the back side, and after being printed by a printer (not shown), it is moved above the equipment case 1 as shown in FIG. Sent out. In addition, when the roll paper 2 for printing is removed and replaced, it is sufficient to press the pressing part 4d of the operating body 4 as described above.

Although the above-mentioned embodiment has been described in the case where it is applied to a small electronic calculator, this invention is not limited to this and can be widely applied to other electronic devices.

[Effects of the invention] As explained in detail above, according to the printing roll paper mounting structure according to this invention, the operating body has the roll paper mounting part and the pressing part on opposite sides of the supporting part. and a frame surrounding this operating body are integrally molded together using only the supporting part of the operating body, and by pressing the pressing part of the operating body, the roll paper attaching part is pulled in and the roll paper for printing can be attached and detached. This has the advantage that the printing roll paper can be easily and easily attached and detached, and is also excellent in portability.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment in which this invention is applied to a small electronic calculator. FIG. 3 is a cross-sectional view of the main part in a state where the holding member is attached to the device case, and FIG. 4 is a cross-sectional view of the main part showing the state in which the roll paper for printing is attached and removed. 1...Equipment case, 2...Roll paper for printing, 3
...Holding member, 4...Operation body, 4b...Support part,
4c... Roll paper attachment part, 4d... Pressing part, 5...
...frame body.

Claims (1)

[Scope of utility model registration request] An operating body in which a roll paper attaching part and a pressing part are provided on opposite sides of the supporting part, and a frame surrounding this operating body are integrally connected and molded only by the supporting part of the operating body. A mounting structure for a roll paper for printing, characterized in that the roll paper for printing is attached or detached by retracting the roll paper mounting part by pressing the pressing part.