JPH0330514B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic device equipped with an anti-reflection plate, and particularly to an improved mounting structure of the anti-reflection plate.

Generally, an antireflection plate is used to prevent display contents from becoming difficult to see due to light reflection. Figure 1 shows a typewriter that uses an anti-reflection plate, and the content entered using key 1 is printed on printing paper by a printing mechanism (not shown), and this printed content is printed on a transparent material that is integrated with the main body of the device. Check through the printing section cover 2 formed in the . Reference numeral 3 denotes an anti-reflection plate which can be rotated according to the angle of the light beam incident on the surface of the printing section cover 2. FIG. 2 shows the connecting part between the printing section cover 2 and the anti-reflection plate 3, which is circled in FIG.
The holes 6 formed in the pair of mounting arms 5 of the anti-reflection plate 3 are fitted into the holes 6, respectively. Both mounting arms 5 of the anti-reflection plate 3 clamp both sides of the print section cover 2 at room temperature, and form a contact area 7 between the print section cover 2 and the anti-reflection plate 3.
Friction occurs, and this frictional force holds the antireflection plate 3 at a desired rotational position. However, if the print section cover 2 contracts relatively in the direction of arrow A or the antireflection plate 3 expands in the direction of arrow B due to a change in environmental temperature, a gap is created in the contact part 7, which causes a reduction in frictional force. Therefore, anti-reflection plate 3
The holding force is not ensured, and as a result, the anti-reflection function cannot be effectively exhibited. Furthermore, if the printing section cover 2 and the antireflection plate 3 are made of molded material, the expansion and contraction due to changes in environmental temperature are large, and the reduction in frictional force is further increased.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic device that has a simple structure and can always maintain an antireflection plate at a desired position against changes in environmental temperature.

In order to achieve the object, the electronic device of the present invention includes a first member having a shaft portion formed at both ends, and a second member having an opening portion rotatably fitted to the shaft portion of the first member. In electronic equipment that has
Forming a flange portion on the shaft portion of the first member that contacts the side surface around the opening of the second member, and expanding or contracting along a line connecting both fitting portions of the first member and the second member. Accordingly, a configuration is adopted in which at least one of the first member and its flange abuts against the side surface of the second member around the opening. The present invention will be explained below based on the embodiments shown in the figures. FIG. 3 is an embodiment of the present invention. Printing cover 1 that is attached to a typewriter as an electronic device and forms part of the device body
2 (first member) is made of transparent synthetic resin;
It has the same function as cover 2 in the figure. Reference numeral 13 denotes an antireflection plate (second member), and a pair of attachment arms 15 rotatably fit into the attachment protrusion 14 through its key-shaped notches 16 (openings). As shown in FIG. 4, the shape of the mounting projection 14 is a columnar projection 16a (shaft).
A fastening portion 16b having a larger diameter than the protruding portion 16a is provided at the tip of the protruding portion 16a.
The arm part 15 of the anti-reflection plate 13 can receive friction from both sides of the contact parts 17 and 18, and the printing part cover 12 can receive friction from both sides of the contact parts 17 and 18.
When it contracts in the direction of arrow A, the frictional force on the 18th side increases, and when it expands in the direction of arrow B, the frictional force on the 17th side increases, so that the holding force of the antireflection plate 13 can be ensured.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and a mounting protrusion having a fastening portion at the tip may be provided on the anti-reflection plate 13 side, and a key-shaped notch may be provided on the print section cover 12 side. In addition, the fitting structure can be modified in various ways, and in the end, either the mounting part side of the device main body or the anti-reflection plate side is clamped by the other side in a direction approximately perpendicular to the rotation direction of the anti-reflection plate. That's fine. In addition, it prevents the frictional force from decreasing due to expansion and contraction caused by changes in the environmental temperature as mentioned above, and has a simple structure with a large diameter fastener formed at the tip of the columnar protrusion, which reduces the number of parts without increasing the number of parts. This has the effect that the antireflection plate can always be held at a desired position at a low cost.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a typewriter equipped with an anti-reflection plate, Fig. 2 is a cross-sectional view of a connecting portion between a conventional anti-reflection plate and the main body of the device, and Fig. 3 is an anti-reflection plate and a device according to an embodiment of the present invention. Explanatory diagram of the connection structure with the main body, No. 4
The figure is a sectional view of the connecting portion of FIG. 3 in an assembled state. 12... Printing part cover, 13... Anti-reflection plate,
14...Mounting protrusion, 15...Mounting arm, 16
...Key-shaped notch.

Claims (1)

[Scope of Claims] 1. A first member having shaft portions formed at both ends;
In an electronic device having a second member having an opening that is rotatably fitted to the shaft portion of each member, a flange portion that comes into contact with a side surface around the opening of the second member is formed on the shaft portion of the first member. However, due to expansion or contraction along a line connecting both the fitting portions of the first member and the second member, at least one of the first member and the flange thereof is attached to the side surface around the opening of the second member. An electronic device characterized by having a structure in which they abut. 2. The electronic device according to claim 1, wherein the first member is a printing section cover of a typewriter, and the second member is an antireflection plate held by the printing section cover.