JPS5918233B2 - typewriter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ribbon cartridge used in a typewriter, and more particularly to a loading device for loading a ribbon cartridge into a typewriter body.

In recent years, typewriter ribbon devices have begun to use cartridge systems, as seen in the ribbon cartridges manufactured by I-B-M and the ribbon cartridges manufactured by S-CM.

This cartridge system is characterized in that the operator's hands and clothes 30 are not soiled when the ribbon is attached or removed, and the ribbon can be easily replaced. However, compared to conventional ribbon devices, this cartridge method is not only the cartridge itself, but the loading method of loading the cartridge into the typewriter body is the most difficult35, and the quality of the loading method determines the quality of the cartridge method. It can be said that it affects the left and right. That is, a large number of conditions are required, such as easy loading operation, short loading time, low manufacturing cost, and no negative impact on the design of the typewriter body. The present invention provides a tie writer equipped with a ribbon cartridge loading device that fully satisfies the above-mentioned requirements, and the details thereof will be explained below with reference to the drawings.

As shown in FIG. 1, 8 is a platen, 9 is a tie bar/guide attached to the typewriter main body (not shown), 1
0 is a ribbon vibrator, which extends from the right side in Fig. 1 and has an arm portion 10a whose central portion is pivotally supported on the typewriter body.
and a ribbon guide section 10b.

Further, 11 shown in FIG. 2 is a rotating member, and the first spring 1
2, it is always biased clockwise. One end of the rotating member 11 is connected to the arm 10a of the ribbon vibrator 10 via a connecting wire 13, and a T-shaped groove 14 is provided at the other end. 15 is a transmission rod, one end 15a engages with the T-shaped groove 14, and the other end 15a engages with the T-shaped groove 14;
b is connected to the universal bar 16.

One end 15a that engages with the T-shaped groove 14 has a manual operation member (not shown) for positioning the ribbon at three positions (
stencil, black, red).
The engagement positions of the letter-shaped groove portions 14 are changed. That is, by changing the engagement position of the transmission rod 15 with the T-shaped groove 14 of the rotating member 11 over three positions, the rotating member 11 is capable of three types of rotation movements with different rotation angles.

The three types of rotational movements of the rotating member 11 are transmitted as three types of rotational movements to the ribbon vibrator 10 via the connecting wire 13, and the ribbon is set at each position. Therefore, each time the universal bar 16 is rotated,
The ribbon vibrator 10 is driven to the position set at that time. The driving device for this ribbon vibrator 10 is similar to the conventional device. Reference numeral 17 denotes a ribbon cartridge, which includes a pair of ribbon storage bodies 18 and a connecting part 19 made of a thin metal plate that connects the pair of ribbon storage bodies 18.
As shown in FIGS. 1 and 6, the cartridge is normally loaded into a cartridge loading device provided in a part 20 of the top cover.

This cartridge loading device and its loading method will be explained.

21 is a holder fixed to a side frame (not shown) of the typewriter main body, and 22 is a planting pin planted in one end of the holder 21.

Reference numeral 23 designates a link whose central portion is rotatably supported at the upper end of the holder 21, and the end edge thereof has a second cam surface 23b having an equal radius from the pivot point 24, and a second cam surface 23b having a concave shape. One cam surface 23a is provided.

A second spring 25 is stretched between the holder 21 and the link 23, and urges the link 23 counterclockwise in FIG.

Reference numeral 26 denotes a top cover arm, the lower end 26a of which is rotatably supported by the end of the link 23 opposite to the end having the cam surfaces 23a and 23b, and the upper end 26
b is fixed to the inner wall protrusion 20a of the top cover portion 20.

This top cover arm 26 has a first groove 27a provided linearly in an approximately 70 degree direction in FIG. A groove 27 is provided, which is configured to fit into the implant pin 22 implanted in the holder 21. A third spring 28 is provided between the link 23 and the top cover arm 26, and is used to move the top cover arm 26 clockwise relative to the link 23 in FIG. We are encouraging them to do so.

That is, when the opening cover part 20 is in the closed position shown in FIG.
By the action of the spring 28, the top cover arm 26 is located at the upper end of the first groove 27a and is maintained in the state shown in FIG. 2, and the top cover part 20 is kept in its closed state. shall be maintained.

29 is a release lever rotatably supported at the lower end of the holder 21, and as shown in FIG. 2, three arms 29a, 29b, 29c protrude in three directions. There is.

The first arm 29a has a first cam surface 23 of the link 23.
A roller 30 that engages with a is attached and slides on the first cam surface 23a based on the rotation of the release lever 29. This first cam surface 23a has a shape extending along an equal radius from the pivot point of the release lever 29, and while the roller 30 is sliding on the first cam surface 23a, the link 23 is completely closed. It does not rotate and maintains the state shown in Figure 2. A fourth spring 31 always biases the release lever to rotate clockwise.

That is, due to the biasing force of the fourth spring 31, the first arm 29a
The rollers 30 maintain a state of engagement with the first cam surface 23a of the link 23, and maintain the link 23 and the top cover arm 26 in the positional relationship shown in FIG.

32 is a typewriter side frame cover (not shown) at one end.
The first pin 33 is fixed to the middle portion of the operating knob rotatably supported on the outside of the release lever 29 so as to engage with the third arm 29c of the release lever 29.

Reference numeral 34 denotes a fifth spring, which urges the operating knob 32 counterclockwise to keep the first pin 33 in the position of the third arm 2.
9c is engaged.

The cartridge loading device is constructed as described above, and maintains the state shown in FIG. 2 based on the interaction of the second to fourth springs 25, 28, and 31. A pair of left and right release levers (only the right side is shown) are provided inside the lighter side frame, and a connecting rod (
(not shown) to maintain the closed state of the top cover 20.

The related structure between this cartridge loading device and the drive device for the ribbon vibrator 10 described above will be explained.

Reference numeral 35 designates an intermediate lever whose intermediate portion is pivotally supported on a side frame (not shown), and has second and third pins 36 and 37 at one end.
is implanted, and a positioning protrusion 35a is provided at the other end.

38 is a fifth spring that biases the intermediate lever 35 clockwise in FIG. I'm making it match.

Reference numeral 39 denotes a first bending member whose one end is fixed to the rotating member 11, and the other end is arranged to contact and engage with the third pin 37.

A second bending member 40 has one end fixed to the rotating member 11, and the other end is arranged so as to be able to engage with the positioning protrusion 35a of the intermediate lever 35.

That is, when the intermediate lever 35 rotates counterclockwise in FIG. 2, the rotating member 11 rotates counterclockwise via the third pin 37 and the first bending member 39. , as the rotating member 11 rotates, the ribbon vibrator 10
is swung, and as a result, the ribbon holder located at the other end is lifted via the fulcrum in between, so that the black ribbon portion of the printing ribbon is driven upward to the printing position.

At this time, the other end of the second bending member 40 of the rotating member 11 engages with the edge of the positioning projection 35a, and the intermediate lever 35
It also controls the rotation of the rotation member 11 and positions the ribbon vibrator 10 at that position. At this position, the ribbon cartridge 17 is attached to and detached from the loading device as described later. Top cover part 2 here
The inner wall configuration of No. 0 will be explained with reference to FIGS. 1 and 2. Reference numeral 41 denotes a cartridge storage frame provided on the left and right upper inner walls of the top cover part 20, which includes a peripheral frame 43 having an opening 42 opened upward in FIG.
The lower frame 44 has an opening 44a in the center.

This opening 44a is for connecting the ribbon storage body 18 stored in the storage frame to a ribbon drive device 45 provided on the typewriter main body side. Reference numeral 46 denotes a leaf spring whose central portion is bent, one end of which is fixed to the rear frame 43a of the peripheral frame 43 so that the bent portion faces downward.

That is, the cartridge storage frame 41 can store the ribbon storage body 18 of the ribbon cartridge 17 through the opening 42, and the bent portion of the leaf spring 46 engages with the window 18a provided on the top surface of the ribbon storage body 18. and holds the ribbon storage body 18 in its storage position (see FIG. 6).

Here, the operation of the ribbon cartridge loading device and the method of attaching and detaching the ribbon cartridge 17 to and from the loading device will be explained.

When the operating knob 32 is rotated counterclockwise in FIG. 2, the release lever 29 is rotated counterclockwise against the urging force of the third spring 28 via the first pin 33 and the third arm 29c. rotate in the direction.

The rotation of the release lever 29 causes the intermediate lever 35 to rotate counterclockwise against the fourth spring 31 via the second arm 29b and the second pin 36. As described above, this rotation of the intermediate lever 35 causes the rotation member 11 to rotate counterclockwise against the first spring 12 via the third pin 3r and the first bending member 39. After passing through the connecting wire 13, the ribbon vibrator 10 is driven. This rotation of the rotating member 11 is transmitted to the universal bar 16 via the transmission rod 15, but this does not cause any problem as a typewriter. On the other hand, as the release lever 29 rotates, the first arm 29a of the release lever 29 also rotates, but the rotation of the first arm 29a causes the roller 30 to slide on the first cam surface 23a of the link 23. The link 23 remains in the state shown in FIG. FIG. 3 shows a state in which the rotating member 11 continues to rotate in this manner and the roller 30 of the first arm 29a reaches the left end of the first cam surface 23a of the link 23. Operation knob 3 so far
2 merely drives the ribbon vibrator 10, and does not change the link 23 or the top cover arm 26 at all, and the top cover part 20 also maintains the state shown in FIG. 2. .

When the operating knob 32 is further rotated counterclockwise,
The intermediate lever 35 and the rotating member 11 further rotate, and the positioning protrusion 35a and the other end of the second bending member 40 engage to set the universal bar 16 at the black ribbon position as described above. It is.

On the other hand, the roller 30 of the first arm 29a passes the edge of the first cam surface 23a of the link 23 and rapidly moves to the second cam surface 23b. As the rollers 30 move to the second cam surface 23b, the link 23 rotates counterclockwise according to the biasing force of the second spring 25. The rotation of the link 23 continues until the upper edge of the link 23 engages with the implant pin 22, but the rotation of the link 23 causes the top cover arm 26 to connect with the first groove 27a and the implant pin 22. While being regulated by
From the figure, it is pushed up diagonally to the right. Top cover arm 2
The upward movement of 6 continues until the planting pin 22 reaches the lower end of the first groove 27a, thereby causing the top cover portion 20 to be translated diagonally upward to the right as shown in FIG. Now, as shown in Fig. 1, the ribbon cartridge 17
When the ribbon cartridge 17 is loaded, the connecting part 19 of the ribbon cartridge 17 is located below the type bar guide 9, and when the ribbon cartridge 17 is simply lifted upward, the upper end curved part of the type bar guide 9 connects with the ribbon cartridge 17. The connecting portion 19 will collide with the connecting portion 19.

However, as mentioned above, since the top cover part 20 is pushed upward diagonally to the right in FIG. 3 and upward toward you in FIG. It can be pushed upward without colliding with the upper end curved part of the type bar guide 9.

The operating knob 32, rotating member 11, intermediate lever 35, release lever 29, and link 23 that have been moved to FIG. According to the urging force of 28, it rotates clockwise about the pivot point 24.

This rotation is regulated by the implant pin 22 and the second cam surface 23b, resulting in the state shown in FIG. 5. That is, the top cover portion 20 is held at a position rotated approximately 15 degrees from the state shown in FIG. I am made to do so. Therefore, as shown in FIGS. 5 and 6, the end of the top cover portion 20 is located considerably higher than the platen 8. At this time, the ribbon vibrator 10 is positioned and held at the position where the black ribbon is set at the printing position, as described above. Fifth
After the state shown in FIG. 6 is established, the operator pinches the portion of the ribbon cartridge 17 exposed outside the top cover 20 and pushes the ribbon storage body 18 against the leaf spring 46.
By pulling out the cartridge from the cartridge storage frame 41,
From the cartridge storage frame 41 to the ribbon cartridge 17
ejection is completed.

When newly loading the ribbon cartridge 17, after forming the state shown in FIG. 5 as described above, the ribbon cartridge 17 is positioned above the platen 8, and the ribbon storage body 1 is
8 is inserted into the left and right cartridge storage frames 41 through the opening 42, and the leaf spring 46 and the window 18a of the ribbon storage body 18 are inserted.
When the ribbon cartridges 17 are engaged with each other, the ribbon cartridge 17 is stored in the cartridge storage frame 41.

After the storing operation of the ribbon cartridge 17 is completed, the operator rotates the top cover part 20 counterclockwise in FIG. 5 by lightly pressing down on the upper surface of the top cover part 20. The top cover arm 26 is the third
It is rotated counterclockwise against the spring 28 and returns to the state shown in FIG.

When the push-down operation of the top cover portion 20 is continued, the top cover arm 26 moves downward against the second spring 25 while being regulated by the planting pin 22 and the first groove 27a. Accordingly, the link 23 is rotated clockwise. The release lever 2 rotates the linter 23 clockwise.
9 is moved from the second cam surface 23b of the link 23 to the first cam surface 23a, and finally returns to the state shown in FIG. 3. After the state shown in Figure 3, a portion of Totsubu cover 2 is added.
When 0 is pressed down, the release lever 29 and operation knob 3
2. The intermediate lever 35 and the rotating member 11 rotate clockwise together with the biasing forces of the first, second, fifth, and sixth springs 12, 31, 34, and 38 from FIG. 3 to FIG. becomes the state of By forming the state shown in FIG. 2, the ribbon storage body 18 is connected to the ribbon drive device through the opening 44a of the lower bottom frame 44, and the top cover portion 20 is returned to its original position and inserted into the cover structure. The loading of the ribbon cartridge 17 is thereby completed. Furthermore, when loading the ribbon cartridge 17, as explained when removing the ribbon cartridge 17, there is no collision between the upper end curved portion of the type bar and the guide 9 and the connecting portion 19 of the ribbon cartridge 17. The ribbon cartridge 17 can be loaded very smoothly.

As described in detail above, the present invention opens and closes a portion of the top cover and moves the printing ribbon using a ribbon vibrator device in conjunction with the rotation of the operating knob, and furthermore, allows the ribbon vibrator to move a portion of the top cover in the closed position. Since the vibrator device is configured to be locked and held at the ribbon exchange position,
It becomes extremely easy to attach and detach the printing ribbon cartridge to and from the cartridge loading device, thereby making it extremely easy to replace the ribbon.

Moreover, since the ribbon cartridge is stored inside a part of the top cover, it has no effect on the design of the typewriter itself, and even typewriters that use ribbon cartridges can have a unified design. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted plan view showing a state in which a ribbon cartridge is partially loaded in the top cover, and FIG.
A-line main part explanatory diagram, Figures 3 to 5 are action explanatory diagrams, and Figure 6
The figure is an explanatory view of the main parts taken along the line B--B in FIG. 1, in which 17 is a ribbon cartridge, 20 is a part of a top cover, and 41 is a cartridge storage frame.

Claims (1)

[Scope of Claims] 1. A rotatable operating member, an operating lever that is activated as the operating member rotates, and a typewriter main body that is movable from a closed position to an open position by the operation of the operating lever. a top cover part that is supported by the side frame of the typewriter and covers the entire upper part of the typewriter; a holding member that holds the top cover part in the open position; and a printing ribbon cartridge provided on the inner wall surface of the top cover part. a ribbon vibrator device that moves the printing ribbon stored in the printing ribbon cartridge from a non-printing position to a ribbon replacement position above the printing ribbon cartridge by actuation of the operating lever; a locking member that locks the device at the ribbon exchange position, and the opening of the top cover portion and the movement of the printing ribbon are both performed in conjunction with rotation of the operating member. A typewriter characterized by: