JPS6130858Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a type gripping device for type bars of Japanese typewriters.

The type gripping device in the type bar of a conventional Japanese typewriter has a slideable piece on one side of the type bar, and the piece is pushed out by the tension of the printing rod while gripping the type in the support cylinder. , so the center of gravity of the type bar is shifted to the above piece side.

Therefore, at the time of printing, a rotational moment acts on the type bar due to the swaying center of gravity, causing twisting at the tip of the type bar.

As a result, the printed fonts are misaligned.

The purpose of this invention is to eliminate the above-mentioned drawbacks by preventing twisting caused by the uneven center of gravity at the tip of the type bar.

This invention provides a type clamping device for the type bar of a Japanese typewriter, which incorporates a piece and a pressing cam on the center line of the type bar to prevent rotational moment from acting on the type bar.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

In the figure, 1 is a plate, and this plate 1
The end of the type bar 3 is rotatably supported via a pin 2. Reference numeral 4 denotes a type support cylinder provided at the tip of the type bar 3.

Between the end and the tip of the type bar 3, the upper and lower surfaces are open and a through window 5 along the axis of the type bar 3 is provided.

Further, a through hole 6 is provided through which the tip end face of the through window 5 and the inner circumferential surface of the support tube 4 communicate with each other, and the through window 5
A slidable piece 7 whose tip is fitted into the through hole 6 is fitted inside.

In the illustrated case, the guide of the piece 7 consists of a pair of projecting pieces 8 hanging from both ends of the type bar 3, a shaft ⁸¹ installed between the projecting pieces 8, and a type bar such that the shaft ⁸¹ passes through the pair of projecting pieces 8. This is done through an elongated hole 9 provided at the end of 3.

Furthermore, the push-out movement of the piece 7 accompanying the upward rotation of the type bar 3 is achieved by pivotally supporting the center portion between both ends of the swing plate 11 via a pin 10 on the side surface of the unend portion of the type bar 3 in the illustrated case. This swing plate 11
A rod 13 is connected through a pin 12 to one end facing upward.
A long hole 14 in the vertical direction is provided at the end of the piece 7, and the rocking plate 11 is inserted into the long hole 14.
This is done by inserting a pin 15 provided at the other end.

Further, a horizontal pin 16 is installed within the end portion of the through window 5, and a rotatable cam 17 is supported on this pin 16.

Further, the piece 7 is provided with a rotor 18 that comes into contact with a cam 17 that rotates in the falling direction from the middle of the upward rotation of the type bar 3.

As shown in the figure, a long hole 19 whose upper and lower surfaces are open is provided in the piece 7, and the rotor 18 is pivotally supported via a pin 20 installed in the long hole 19. The cam 17 that has been rotated in the falling direction is fitted in, and a collision between the cam 17 and the piece 7 can be prevented.

Also, a pair of side plates 21 whose lower ends are pivotally supported on pins 2
and the both side plates 2 across the unend of the type bar 3.
1 constitutes a rotating frame 23 with a connecting plate 22 that connects the upper edge of the plate 1, and a spring 24 is stretched between the end of the plate 1 and the lower edge of the side plate 21, and the connecting plate 22
A protruding piece 25 that contacts the upper edge of the cam 17 is provided on the front edge of the cam 17, so that the cam 17 is rotated in the falling direction from the middle of the upward rotation of the type bar 3.

A horizontal long hole 26 communicating with the through-hole 5 and a horizontal long hole 27 communicating with the inside of the support tube 4 are provided on one side of the type bar 3, and the type bar 3 is fixed to the piece 7 and connected to the long hole 26. The lower end of a leaf spring 29 is fixed to the penetrating attachment member 28 .

Furthermore, a bent portion 30 is provided at the tip of the leaf spring 29 to fit into the elongated hole 27 and press the type A toward the reference surface within the support tube 4.

A stopper 31 is provided on the inner surface of the plate 1 so as to come into contact with the front edge of the side plate 21.

The type gripping device according to this invention has the above-mentioned structure, and its operation will be explained next. When the type bar 3 returns to its original position as the rod 13 retreats, the swing plate 11 moves clockwise in FIG. Rotate piece 7
Since the piece 7 is pulled back, the tip of the piece 7 and the bent portion 30 have retreated to the position where they escaped from the inside of the support tube 4.

Next, when the type A is inserted into the support cylinder 4 and the rod 13 is moved forward, the piece 7 is first pushed out by the rotation of the rocking plate 11, so that the tip of the piece 7 fitted into the support cylinder 4 is pushed out. As the type A is held, the bent portion 30 of the leaf spring 29 presses the type A against an L-shaped reference surface within the support cylinder 4 .

Thereafter, the type bar 3 is rotated in a direction using the pin 2 as a fulcrum.

At this time, the upper edge of the cam 17 comes into contact with the protrusion 25 of the rotating frame 23 which is stopped by the stopper 31, causing the cam 17 to rotate in the direction of collapse, and while stretching the spring 24, the type bar 3 Since the rotating frame 23 is rotated in the same direction, the cam 17 is further forcibly rotated in the falling direction.

Therefore, the piece 7 is pushed out by the rotor 18 in contact with the cam 17, and the tip of the piece 7 presses the type A against the remaining reference surface in the support tube 4.

After that, type A is printed on the plantain 32.

After the above-mentioned printing, the rotating frame 23 together with the type bar 3
rotates back.

At this time, the side plate 21 comes into contact with the stopper 31 and the return rotation of the rotating frame 23 is stopped, so the cam 17 is removed from the protruding piece 25 and the pushing of the piece 7 by the cam 17 is released.

Note that when the type bar 3 returns, the piece 7 is pulled back, so that the type A in the support tube 4 is released from being held.

As described above, according to the type gripping device in the type bar of a Japanese typewriter according to this invention, the upper surface is open from the tip of the type bar to the unend part, and the type bar is located at the axis of the type bar. In addition, a through hole is provided through which the through hole communicates with the support tube, and a slideable piece is inserted into the through hole by passing the tip through the through hole, and the type bar is fitted with a slideable piece. A long hole is provided through which the side surface and the through window communicate, and a mounting member is fixed to the piece by fitting into the long hole, and the end of the leaf spring is supported on the mounting member, so that the type bar Pieces can be placed on the axis.

Therefore, the center of gravity of the type bar is not shifted, and twisting of the support cylinder due to the rotational moment of the type bar that occurs during printing or the like can be eliminated.

That is, it is possible to eliminate misalignment of fonts.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional side view of the device according to this invention, Fig. 2 is a plan view thereof, Fig. 3 is a partial longitudinal sectional view, Fig. 4 is a longitudinal sectional side view showing the main parts of the same, and Fig. 5 is a longitudinal sectional side view of the device according to the invention. The cross-sectional plan view and FIG. 6 are side views showing the printing state of the type bar. A...Print, 1...Plate, 2...Pin, 3
...Type bar, 4...Support tube, 5...Through window, 6
...Through hole, 7...Piece, 8...Protrusion, 8 ¹ ...
Shaft, 9... Long hole, 10... Pin, 11... Rocking plate, 12... Pin, 13... Rod, 14... Long hole, 15... Pin, 16... Pin, 17... Cam , 18... Rotor, 19... Elongated hole, 20... Pin, 21... Side plate, 22... Connection plate, 23... Rotating frame, 24... Spring, 26... Elongated hole, 27... Long hole, 28... Mounting member, 29... Leaf spring, 30
...Bending portion, 31... Stopper, 32... Platen.

Claims (1)

[Scope of utility model registration request] Before the type bar starts to rotate upward by sliding the rod, push out the leaf spring that engages the type fitted in the support tube of the type bar and a piece integrated with this leaf spring. In the middle of the rotation, a rotating frame that pulls a spring and a cam pivotally supported on the type bar are brought into contact with each other, and the cam pushes out the piece, and the piece is pushed out from the tip of the type bar to the unended part. A through hole is provided whose top surface is open toward the type bar and is positioned at the axis of the type bar, and a through hole is provided through which the through hole communicates with the support tube, and the tip is passed through this through hole. A slidable piece is incorporated into the through-hole, and a long hole is provided through which the side surface of the type bar communicates with the through-hole, and a mounting member is fixed to the piece by being fitted into the long hole, and the mounting member A type gripping device in a type bar of a Japanese typewriter, characterized in that the end of a leaf spring is supported at the end thereof.