JPS6022425Y2 - Writing instrument type small electronic calculator - Google Patents

Description

[Detailed description of the invention] This invention relates to a small electronic calculator with a writing variant.

Conventionally, as a writing instrument-type small electronic calculator, as shown in FIG. 1 or FIG.
It is known that a display unit 2 and keys 3, 3 for setting numbers and calculating operations are provided together on one side.

That is, the handwritten variant small electronic calculator shown in FIG. The formula calculator has operation keys 3, 3 as keys with two functions, and a changeover switch 4 (sliding type switch so that the switching state can be seen at a glance) is used to change the function of each key 3, 3. It is designed so that it can be used by switching between the two.

However, in the handwritten variant small electronic calculator shown in FIG. Even though it is a writing instrument, it is quite large in size, and the distance between keys 3 and 3 is very narrow, so adjacent keys get in the way of key operations, making it difficult to operate them. .

In addition, the writing variant small electronic calculator shown in Figure 2 is 1
Since one key 3 has two functions, the number of keys can be halved and the distance between each key 3 can be widened, and the size can be reduced to some extent, but on the other hand, the changeover switch Since the key operation must be performed after switching the changeover switch 4, the operation is complicated, and there is a drawback that malfunctions may easily occur due to forgetting to switch the changeover switch 4 or erroneous switching.

For this reason, each operation key has traditionally been a key with a single manual function, the same as the operation key of the handwriting variant small electronic calculator shown in Figure 1, and all operation keys necessary for number entry and arithmetic operations have been used. It has been considered to increase the distance between each key by arranging them separately on both sides of the main body.

However, conventionally, key indications such as numbers, letters, symbols, etc. indicating the type of each operation key are provided on the top surface of each operation key, or are placed near each operation key on the key arrangement surface.
Because of this, the key display cannot be seen unless you are above the key arrangement surface. Therefore, if each operation key is arranged on both sides of the body as described above, the key display cannot be seen. Each time an operation is performed, the entire calculator must be rotated in the circumferential direction to operate the keys while the key display is visible, making input operations cumbersome.

This idea was devised in view of the above-mentioned circumstances, and its purpose is to provide all the operation keys necessary for number entry and arithmetic operations on the body of the main body. , it is possible to reduce the size of the entire computer by significantly reducing the size of the main body, and it is also possible to operate the keys with good operability since adjacent keys do not get in the way of key operations. To provide a writing instrument type small electronic calculator which allows operations to be performed while viewing a display part and key display from a part of the screen without rotating the calculator in the circumferential direction.

An embodiment of this invention will be described below with reference to the drawings.

3 to 5, reference numeral 11 in the figures is a writing implement-shaped small electronic calculator main body having a writing part a at the tip, and 11a is its body.The body 11a is cylindrical, and its outer periphery is A display section 12 is provided on one side (the front in FIG. 3) at a position near the tip.

Reference numeral 13.13 is a key for operating numbers, calculations, and other operations provided on the outer surface of the body portion 11a. They are arranged in two separate locations on two key array surfaces 14.14 formed on both sides (upper and lower surfaces in FIG. 3).

That is, each of the key array surfaces 14, 14 is formed by forming a part of the circumferential surface of the body section 11a into a band-shaped plane extending in the longitudinal direction of the body section, and each of the operation keys 13.13
are arranged in a line along the longitudinal direction of the body on both the key arrangement surfaces 14 and 14, respectively.

Further, numbers, letters, symbols, etc. 15.15 indicating the type of each operation key 13.13 are displayed on the display section 12 of the body section 11a.
Each operation key 13 is placed on the side of the shape along the edges on both sides.
．． 13 is written by means such as printing.

Further, as shown in FIG. 5, the operation keys 13.13 are arranged such that the top of the key is moved to the key arrangement surface by the elastic force of the conductive rubber 16 which penetrates the key arrangement surfaces 14, 14 of the body portion 11a and becomes a movable contact. When the operation key 13 is pressed with a fingertip, the conductive rubber 16 is elastically deformed and comes into contact with a contact electrode (not shown) formed on the surface of the circuit board 17. , LSI (
(not shown).

Note that 18 is an insulating spacer that supports the conductive rubber 16 on the circuit board 17.

Further, in FIG. 5, reference numeral 19 is an ink storage tube that is the same as the ink storage tube of a ballpoint pen, for example, and a writing tip 20 that holds a ball is provided at the tip of this ink storage tube 19. As shown in FIGS. 3 and 4, it protrudes from the tip of the writing portion a of the main body 11.

Note that the circuit board 17 has an ink storage tube 1 inside the main body 11.
In order to ensure the insertion space for the ink storage tube 1, the ink storage tube 1 is bent into a U-shape, for example, and is three-dimensional.
9 is inserted into a space surrounded by the U-shaped circuit board 17.

That is, this writing instrument type small electronic calculator is used as a ballpoint pen and also as an electronic calculator.When used as a calculator, the display part 1
2 is placed in the position that is most visible to the user.
All you have to do is hold the button and operate each operation key 13.13.

However, in this writing instrument-type small electronic calculator, the key display indicating the type of each operation key 13.13, that is, the number, character, symbol, etc. 15.15 is written on the side surface of the display section 12, so the key Even without turning the main body 11 so that the array surface 14 is viewed from directly above, key operations can be performed with the operation keys 13 and 13 viewed from the side while the display section 12 is visible.

In addition, in this writing instrument type small electronic calculator, each operation key 13.13 is arranged on both sides of the formed side surface of the display section 12, so that all the operation keys 13.13 are arranged on one surface. 13, the number of operation keys 13.13 per surface is reduced by almost half, and the intervals between each operation key 13.13 can be made sufficiently wide, making key operations much easier. It will be easier to use, and the key layout side 1
Since the area of 4.14 (particularly the width in the circumferential direction of the body) can be reduced, the size of the body 11a (particularly the diameter) can be reduced, thereby making it possible to downsize the computer as a whole.

The writing instrument type small electronic calculator of this invention may be equipped with a writing instrument other than a ballpoint pen, such as a mechanical pencil, fountain pen, or other writing instrument, or it may be equipped with a writing instrument other than a ballpoint pen, or it may not be equipped with a writing instrument and only have a writing instrument shape. You can.

Since the writing implement type small electronic calculator of this invention is as described above, keys for setting numbers and calculating operations are arranged along the length direction of the body on both sides sandwiching the display forming side of the main body. As a result, the number of operation keys per side can be reduced, which allows the body of the main body to be made smaller and the entire computer to be smaller.At the same time, the intervals between each operation key are sufficiently wide to facilitate key operation. , so that adjacent keys do not get in the way, and key displays corresponding to each operation key are provided on the display forming side surface of the main body body along each row of operation keys on both sides of the body body. This makes it possible to see each key display and the display part from the same side, allowing you to select the operation key without turning the calculator in the circumferential direction, improving operability. Can operate keys well.

[Brief explanation of drawings]

Figures 1 and 2 are front views showing a conventional writing instrument-type small electronic calculator, Figure 3 is a front view showing an embodiment of this invention, Figure 4 is an enlarged perspective view, and Figure 5 is a front view showing a conventional writing instrument type small electronic calculator. It is also an enlarged vertical side view. 11... Main body, lla... Torso, 12
... Display section, 13 ... Operation keys, 1
4...Key layout surface.

Claims (1)

[Scope of utility model registration request] A display section is provided on the body side of the main body of a small-sized electronic calculator body, and input operations are performed by pressing both sides of the body section sandwiching the display section forming side surface along the longitudinal direction of the body. a writing key, and a key display corresponding to each of the operation keys is provided on the display-forming side surface of the body, along each row of operation keys on both sides of the body. An oddly shaped small electronic calculator.