JPS5913079Y2 - Feed confirmation device for double-sided braille typewriter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a feed confirmation device for a double-sided rod type Braille typewriter that can distinguish between two types of operations: double-sided printing and single-sided printing.

Currently, Braille publishing is extremely poor, and the main reasons for this are the fact that the number of Braille readers is small compared to the number of blind people, as well as the high price of Braille books. There are several points that make it unsuitable for personal collections.

However, the diameter of conventional Braille typewriters is 15.9 m.
A type paper feed roller with a circumference of 5Qm/m and a circumference of 5Qm/m was used, and a ratchet gear with 5 teeth was provided coaxially with the feed roller to feed each sheet at a pitch of 10m/m.

As shown in FIG. 5A, in order to print the Braille character A with 3 vertical dots and 2 horizontal dots, a vertical blank space of 5 m/m is required.

For this reason, only one-sided printing could be achieved by feeding each pitch at a rate of 10 m/m, which was the main reason why Braille books were bulky and hindered the growth of Braille publishing.

In view of these circumstances, the same applicant filed an application for a double-sided rod-type Braille typewriter, and the present invention relates to an improvement of this and provides a feeding confirmation device for a double-sided rod-type Braille typewriter. be.

Before explaining this invention in detail, we will first introduce the double-sided rod-type Braille typewriter.
A brief description of this is as follows.

When the feed key lever 1 is pushed down along the movement groove 29 until it stops, the link 2 rises and the arm 3 rotates around the feed roller shaft 4, and the pawl 6 pivotally attached to the arm 3 engages the ratchet gear 7. The platen mechanism 9, which rotates a feed roller coaxial with the ratchet gear 7 in mesh with the ratchet gear 7, is the same as the conventional one.

However, in a double-sided rod type Braille typewriter, the number of teeth of the ratchet gear 7 is 24, and the diameter of the feed roller is 19.1 m.
/m, with a circumference of 6 cm/m, so that one tooth moves 2.5 m/m, and when the key lever 1 for feeding is pressed down until it stops, it will move as shown in FIG. 4A.

As shown in B, one pitch is configured to feed six teeth, or 15 m/m.

As mentioned above, to print Braille with 3 points vertically and 2 points horizontally, the height is 5m/
m is required, so even if Braille is printed on one side, a blank space of 10 m/m will remain as shown in Figure 5B.

In this blank space, Braille is printed from the back side as shown in Figure 5C.

In addition, in order to enable single-sided hammering, a restraining rod 11 is installed horizontally under the left side plate 10 so as to be expandable and retractable, and a knob 12 is fixed to the tip of this restraining rod 11, as shown in FIG. 3B. Pick 12
When the restraining rod 11 is reduced by pulling , the number of teeth of the ratchet gear 7 is 6, as shown in FIG. When the locking rod 11 is extended by pressing the knob 12 as shown in FIG. 3A, the locking rod 11 projects into the moving groove 29 and locks the feeding key lever 1 at a predetermined angle. As shown in FIG. 4C, the number of teeth of the ratchet gear 7 is 4, that is, the ratchet gear 7 is configured to be fed by l pitch lQm/m to enable single-sided driving.

Conventional single-sided rod-type Braille typewriters use a ratchet gear with 5 teeth, so there is no risk of mistakes because there is only one type of feed, but in the case of double-sided rod-type Braille typewriters, the number of teeth is 2 as described above.
In order to use the ratchet gear 7 of No. 4, it is necessary to check whether you are currently performing double-sided hitting or single-sided hitting.

A feed confirmation device that can distinguish between double-sided striking and single-sided striking based on the number of gongs will be described in detail below with reference to FIGS. 2 and 3, A and B.

A plate 15 is fixed to the back surface of the cover 14 of the key lever 13, a gong 16 is fixed to the lower part of this plate 15,
A pair of first rotary plates 17.18 are provided above and below the restraining rod 11 on the upper part of the plate 15, with the upper portions of the second rotary plates 17. A pressing spring 21 is provided to press against the L-flange 20, and a linear support member 22.23 is provided on the pivoting portion 19 side of the rotating plate 17.18.
A hammer 24 is fixed to the lower part of the support member 22 in correspondence with the gong 16, and the first rotary plates 17, 18
The base side of the second rotating plate 25, 26 is supported swingably on the side of the stopper 20, and the stopper 28 is below it.
, and the second rotating plates 25 and 26 are made to protrude into the moving groove 29 of the key lever 1 for feeding provided in the cover 14.

Further, the base end of the anti-knocking member 30 is fixed to the tip of the suppression rod 11, and only the support member 22 on the upper rotating plate 17 side is extended so as to engage with the anti-knocking member 30. 3
When the restraining rod 11 is reduced as shown in FIG. 24 from hitting the gong 16.

Then, as shown in Fig. 3B, pull the knob 12 to release the restraining rod 11.
In the double-sided hammering state with reduced size, the tip of the knocking prevention member 30 locks the support member 22 on the upper rotating plate 17 side, and the upper rotating plate 1
7 will stop the gong 16 from sounding, and when the feed key lever 1 is pushed down until it stops as shown in FIG. A pair of first rotation plates 17 and 18 rotate around the pivot portion 19 while pressing the pressure spring 21.

Next, a pair of upper and lower second rotating plates 2 are moved from the feeding key lever 1.
5.26 is released, the rotating plate 17.18 returns to its original position due to the elastic force of the pressing spring 21, and is stopped by the stopper 20.

The hammer 24 on the lower rotating plate 18 side rings the gong 16 due to its reaction, but the hammer 24 on the upper rotating plate 17 side does not ring due to the striking prevention member 30.

Next, as shown in FIG. 3A, push the knob 12 to extend the restraining rod 11, and set the feed key lever 1 to one-sided control with four teeth as shown in FIG. 4C. 22, both the upper and lower hammers 24 ring the gong 16.

Note that the gong 16 is not limited to the gong 16, and any device that emits an appropriate confirmation sound such as a bell may be used.Since the present invention is constructed as described above, the key lever 1 for feeding
Since the two types of operations, double-sided striking and single-sided striking, can be discriminated by the gongs 16, accurate feeding is achieved, and a more excellent double-sided rod-type typewriter is provided, which has great practical effects.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is a perspective view of a feed confirmation device, and FIG. 3A. B is a working state diagram, FIGS. 4A, B, and C are side views showing the working state of the platen mechanism, and FIGS. 5A, B, and C are front views of Braille. DESCRIPTION OF SYMBOLS 1...Feeding lever, 9...Platen mechanism, 11...Suppression rod, 12...Knob, 14...Cover, 15・・・・・・Play I
・、16・・・・・・Gong、17.18・・・・・・
Rotating plate, 20...S1 to collar 121...
...Press spring, 22.23...Support material, 2
5.26... Second rotating plate, 30... Banging prevention member.

Claims (1)

[Scope of utility model registration request] A feeding key lever for the platen mechanism that moves up and down along the moving groove is provided, and a suppressing rod for switching between double-sided and single-sided hitting, which has a knocking prevention member on the tip side, is horizontally mounted on the side plate so that it can be expanded and contracted below the feeding key lever. A sounding body is provided on the back side of the cover having the movement groove, and a sounding body is provided on the back side of the cover having the movement groove, and a sounding body is provided above the restraining rod at the upper part of the sounding body. Pivotally attach a pair of upper and lower rotating plates to the position with their negative sides protruding into the movement grooves,
Additionally, a spring is provided to press the rotating plate toward the feed key lever side, a support member for a hammer that strikes the sounding body is provided vertically on each rotating plate, and the suppressing rod is reduced to suppress the feed key lever. The double-sided rod type Braille typewriter is characterized in that the knocking prevention member locks one of the pair of hammer supporting members to prevent one of the hammers from slamming when the double-sided hammering is not performed. Confirmation device.