JPH022605Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a platen feeding device in a typewriter machine.

[Conventional technology]

Conventionally, this type of platen feeding device is of the type that immediately after printing a character, the platen is moved by one character, and after this feeding, the next character is printed on the fed platen, and the type of printing for the next character is No fixing means was provided to prevent the platen from swinging due to the shock during abutment.

[Problem that the invention attempts to solve]

The conventional type had undesirable defects such as vibration of the platen caused by the shock caused by the collision of printed characters, resulting in so-called blurring of the printed characters and irregularities in the height and arrangement of the characters.

[Means to solve the problem]

The present invention is a horizontally movable platform for mounting a platen, which has a number of small projecting plates projecting downward on the horizontal line on the lower surface, and a number of guide grooves for determining the character spacing for typing on the lower surface. , a platform on which the horizontally movable platform is mounted so as to be able to reciprocate in the horizontal direction;
A jump-type stopper such as a push ball with a spring that can be freely locked between the lower edges of the veneer and temporarily stop the left-right moving table at each character interval, and a left-right moving table on the top surface of the base plate. An operating rod that enters the lower surface, an operating section that reciprocates the operating rod in the front and back direction, an upward protrusion and a downward protrusion provided on the upper and lower surfaces of the entry end of the operating rod, and It is composed of a guide hole with an inclined guide part and a linear guide part, and when the downward protrusion moves in the direction from the inclined guide part to the linear guide part as the operating rod moves backward, the downward protrusion moves halfway along the inclined guide part. Despite being in the position of , the upward protrusion is guided by the guide groove corresponding to the position of the next character to be typed. At the same time, it quickly moves to prepare for typing characters, and when the downward protrusion moves from the linear guide part to the inclined guide part as the operating rod moves forward, the downward protrusion slips out of the linear guide part. However, due to the locking action of the jump type stopper, the upward protrusion moves in a straight line until it comes out of the guide groove, and the downward protrusion moves in a straight line until it comes out of the guide groove. By quickly returning to the midway point of the inclined guide part in a short-circuit manner and returning to the starting point, and by making the characters type while the upward protrusions remain in the guide grooves, in other words, the type does not collide with the platen. When mating, the above-mentioned defects are solved by locking with the jump type stopper and locking the upward protrusion in the guide groove to prevent swinging due to the shock.

〔Example〕

In the embodiment shown in the figure, a hollow platform 1 is made of a hard synthetic resin material and has a convex shape when viewed from the side. A left-right movable table 5 made of a hard synthetic resin material that reciprocates laterally in the left and right directions by fitting into the grooves 4 and 4' is mounted, and a pair of Support walls 6, 6' are provided to form a recess 7, and a hollow cylindrical platen 8 made of a hard synthetic resin material is inserted into the recess 7 to support the central shafts 9, 9' of the platen 8. Axial holes 10, 1 provided in walls 6, 6'
0', the platen 8 is rotatably supported on the left-right moving table 5, and a large gear 11 is coaxially and integrally provided on one end surface of the body of the platen 8, and the above-mentioned A U-shaped cutting line 13 communicating with the upper and lower surfaces is cut in the bottom wall of the recess 7, and the tip of the area surrounded by the cutting line 13 is slightly curved upward to form a pair of elastic tongue-shaped parts 14. ，
14', and a bearing groove 15 is recessed on the upper surface of the tip of the elastic tongues 14, 14', and a shaft rod 16 is disposed above the elastic tongues 14, 14' so that the coaxial Both ends of the rod 16 are fitted into the bearing groove 15 so as to freely rotate, one end of the rod 16 is extended to below the large gear 11, and a small gear 17 is fitted to the extended end to mesh with the large gear 11. , also for shaft 1
Rubber pinch rolls 19 for pinching and feeding the typing paper 18 between the outer circumferential surface of the platen 8 and the outer peripheral surface of the platen 6 are fixed in a non-rotatable manner, and a gear-shaped disc 20 is coaxially attached to the side surface of the large gear 11. The platen 8 is integrally provided with a pusher ball 22 mounted on the upper surface of the left-right moving table 5 by a spring 21 mounted on the upper surface of the left-right moving table 5 and is held in the interdental recess of the gear-like disk 20.
A long carbon paper holding deep groove 24 that opens upward is formed at the front edge of the recess 7, and the inner surface of the front wall 25 of this holding deep groove 24 At the same time, a large number of tapered ribs 27 for supporting the carbon paper 26, which keep the paper 28 in a state where it falls forward and is away from the outer peripheral surface of the platen 8, are attached to the rear wall 2 of the deep groove 24 for holding.
A large number of tapered protrusions 28 for maintaining the reclining state of the carbon paper 26 are integrally provided on the 5', and a large number of small projecting plates 30 are provided on the horizontal line of the lower surface of the left-right moving table 5 to protrude downward. A large number of guide grooves 31 are formed on the lower surface to determine the character spacing for typing, and a pusher ball 33 formed by a leaf spring 32 is provided on the upper surface of the rear low point 2 of the base plate 1.
This pusher ball 33 is freely engaged between the lower edges of the projecting plate 32 so that the platen 8 is stopped temporarily at each character interval.

Further, a recessed part 36 that opens upward and rearward is provided in the middle of the high point 35 of the base plate 1, and a wide elongated hole 37 that is long in the front and back direction is provided at an intermediate height position on both left and right side walls of this recessed part 36. 37' in an opposing arrangement, and separately provided with horizontal outward protruding plate parts 38, 38' and vertical downward protruding plate parts 39, 39' on both left and right sides made of hard synthetic resin material. A movable table 40 is constructed, and the vertically movable table 40 has a ceiling-shaped cylindrical portion 41 that opens downward at the center thereof, and a pair of downwardly protruding rods 42, 42 on the front and rear lower surfaces of the center portion. ' are provided integrally with each other, and a removable lid piece 43 is provided to cover the bottom opening of the ceiling-bearing cylindrical portion 41.
The hanging plate 44 is closed on the lower surface of this lid piece 43.
Similarly, horizontal pins 45 are provided integrally at the lower end of the hanging plate 44, and then the above-mentioned front-back and up-down direction movable table 4 is installed.
0 into the recessed part 36, and the horizontally protruding plate parts 38, 38' on both sides thereof are fitted into the elongated holes 37, 37', and the vertically downward protruding plate parts 39, 39' are inserted into the elongated holes 37'. ,3
It locks onto the opening edge of 7' so that it does not come off during operation.
A vertically movable table 40 is supported on the base plate 1 so as to be movable back and forth and vertically within the concave portion 36, and the lower surface of the vertically movable table 40 and the upper surface of the bottom wall of the concave portion 36 are connected to each other. Insert the first to third operating rods 47, 48, 49 between them, and connect the front ends of the operating rods 47, 48, 49 to the front bottom portion 5 of the base plate 1.
0, the second operating rod 48, the third operating rod 48, and the third operating rod 49 are curved outward, the first operating rod 47 is extended without being curved, and the upper part of the tip of the extension is diagonally bent. The slanted guide edges 51, 52, 53 which are inclined upwardly toward the rear are formed at the same locations by cutting, and the above-mentioned slanted guide edges 51, 52, 53 are formed on the top wall of the front low point 50 of the base plate 1. A key 54 for typing characters and a key 56 for sending characters are provided at each location corresponding to the characters.
and a vertical switching key 56 is attached via a leg portion 57' that swings vertically around a shaft portion 57;
When pressed, the lower surface of the character entry key 54 moves the first actuating rod 47 backward against the force of a return spring 87, which will be described later. 52, and the second operating rod 48 moves backward against the force of a return spring 88, which will be described later. The actuating rods 49 are respectively moved rearward against the acting force of a return spring 39, which will be described later, and the first actuating rods 47 are moved upwardly to the lower portion of the longitudinally moving table 40. A pair of open tube portions 58, 58' are integrally formed, and the downwardly protruding rods 42, 42' are vertically slidably fitted into the tube portions 58, 58'. An overhanging portion 59 that enters into the trajectory of the rear end of the first operating rod 47 at the rear end of the base plate 1, and an extension portion that enters the lower surface of the left-right moving table 5 on the upper surface of the rear low point 2 of the base plate 1. 60 are provided integrally with each other, and an upward protrusion 61 and a downward protrusion 62 are provided integrally on both upper and lower surfaces of the tip of the extension portion 60, respectively, and at a location corresponding to the downward protrusion 62 on the top wall of the rear low point 2. A guide hole 65 consisting of an inclined guide part 63 and a straight guide part 64 is bored in the guide hole 65 , and a downward protrusion 62 is attached to the second actuating rod 48 .
When moving in the direction from the inclined guide part 63 to the linear guide part 64 due to the backward movement of Guided by the guide groove 31 corresponding to the position of the character to be typed, the horizontally moving table 5 and the platen 8 are moved over the length of one character by the push ball 33 by the leaf spring 32 at the place where the character is to be typed (with the guidance of the inclined guide part 63). When the downward protrusion 62 moves in the direction from the straight guide part 64 to the inclined guide part 63 as the second operating rod 48 moves forward, the downward Even though the protrusion 62 has come out of the inclined guide part 64, the upward protrusion 61 moves away from the inclined guide part 63 due to the locking of the pusher ball 33 by the leaf spring 32, so that the upward protrusion 61 is removed from the guide groove 31. The downward protrusion 62 moves in a straight line until it comes out, and at the same time it comes out of the guide groove 31, the downward protrusion 62 quickly returns to the intermediate position of the inclined guide part 63 in a short circuit. 1 operating rod 4
When moving against the rear end of 7, the upward protrusion 6
1 is performed through the second actuating rod 48, and furthermore, the third actuating rod 49 is provided with a slope that is inclined upwardly toward the front at a position located below the front-back and up-down direction movable table 40. A guide surface 67 is integrally provided, and this inclined guide surface 67 pushes up the horizontal pin 45 when the third actuating rod 49 moves backward, moves the longitudinally vertically movable platform 40 upward, and when the third operating rod 49 moves forward. In addition, a platform 68 is provided on the upper surface of the bottom wall of the concave portion 36, and the platform 40 is allowed to move downward in the longitudinal and vertical directions by eliminating the push-up of the horizontal pin 45. When the horizontal pin 45 is pushed up, the horizontal pin 45 is received from the inclined guide surface 67 when the vertically movable table 40 moves backward, and the vertically movable table 40 is maintained in an upwardly moving state. Separately from these, there is also a belt-shaped plate 74 made of a semi-rigid synthetic resin material on which type letters 73, 73' are protruded in two stages, one above the other, on the outer periphery of the large-diameter portion 72 of a convex disc 71 having a loading hole 70 in the center. The three dials 7 are wrapped around each other.
5, 76, 77, these dials are 75, 7.
6 and 77 are provided on the upper surface of the above-mentioned sky-bearing cylindrical portion 41 and on both left and right sides of the base plate 1.
8 and 79 respectively, and when it is released from the top of the sky-bearing cylindrical part 41, the coil spring 80 protrudes in the lateral direction of the top to prevent the dial 75 from being pulled out, and the coil spring 80 is pressed with the fingers. A finger-operated stopper 81 that allows the extraction when pushed back against the acting force, and a large number of serrations 82 provided in a circumferential arrangement on the lower surface of the dial and the upper surface of the front-back and vertically movable base 40. Each of them is equipped with a jump-type stopper 85 (only a part of which is shown) for blocking the dial formed of a wart-like protrusion 84 with an elastic plate 83 that engages with the other, and furthermore, the above-mentioned first to third operations are provided. Rod 4
Return springs 87, 88, and 89 are provided in each of 7, 48, and 49 for returning the parts activated by pressing the character input key 54, the forwarding key 56, and the up/down switching key 56 to the state before the pressing operation. Further, linear springs 90 are respectively hung to apply a pressing force to the vertically moving table 40 in the longitudinal and vertical directions.

In addition, 92 in the figure lies down and the typing paper 18
a paper guide member supported on support walls 6, 6', which fixes the paper on the circumferential surface of the platen 8 and stands up to eliminate the cling;
93 is the type 7 provided on the dial 75, 76, 77
3 and 73', corresponding display characters; 94, a removable character selection member made of a hard transparent resin material and provided with windows 95 and 96' for displaying the selected display characters 63; 96, a pipe-shaped receiving leg 97; and pin-shaped extraction leg 9
8 and a mounting leg of the character selection member 94,
99, 99' are stoppers for regulating the range of reciprocating motion of the left-right moving table 5; 100 is a relief recess for the small gear 17; 101 is a relief recess for the pinch roll 19;
102 is a locking screw for the lid piece 43, 103 is a locking claw for the lid piece 43, 104 is a retaining ring for the operating rods 47, 48, 49, 106 is a bottom lid, 107 is a dial knob, 1
08 is the transparent hard synthetic resin cover of the spare dial storage parts 78 and 79, 109 and 109' are the manual knobs of the platen 8, and 110 are the keys 54, 55, and 5.
6, a lower limit regulating part 6, 111 a lifting prevention claw of the first operating rod 47, 112 a detachable support 113, a holding rod 115 with a clip 114, and a large number of horizontal bars 116.
This shows a document holding device constructed of the following.

[Effect]

That is, in order to type characters on the typing paper in the above, first the typing paper 18 is inserted from the rear under the platen 8 and positioned in front of the platen 8, and the typing paper 18 is moved by the paper guide member 92. A piece of carbon paper 26, which is tied to the front of the platen 8 and cut into a strip, is inserted horizontally into the deep shipping groove 24, and the dial 7
Turn 5 to display the desired characters in windows 95, 95'. If the character you wish to type is the typed character 73 on the upper row, press only the character input key 54 and move the back and forth vertically movable table 40 and the dial 75 on the same table 40 via the first actuating rod 47. Then, in the initial stage of the movement, the rear end of the first actuating rod 47 starts moving the second actuating rod 48 rearward via the overhanging part 59, and in the middle stage, this movement starts. As the second actuating rod 48 continues to move, the upward protrusion 61 repositions the left-right moving table 5 and the platen 8 to a position advanced by one character, and in the later stage, the second actuating rod 48 continues to move. Therefore, the upward protrusion 61 maintains the horizontally movable table 5 and the platen 8 at a position that has advanced by one character described above so as not to move horizontally, and in this maintained state, the upper part of the dial 75 (of the character to be typed) is pressed. The carbon paper 26 of 73 is pushed out and hit against the typing paper 18 on the platen 8, and the impression of the upper type 73 is transferred to the typing paper 18 via the carbon paper 26 (in case of transfer of this upper type 73) (Fortunately, the cylindrical shape of the platen 8 does not reach the platen 8, so the lower printed characters 73' cannot be transferred.) At the same time, after the upper printed characters have been transferred, the pressing operation applied to the character input key 54 is performed. All you have to do is release the button and return the entire body to the state before the pressing operation by the action of the return springs 87 and 88. Also, if the character you want to type is the lower type 73', press the upper/lower switching key 56. by applying a pressing operation to raise the longitudinally and vertically moving table 40 via the third operating rod 49, the inclined guide surface 67, the horizontal pin 45, and the hanging plate 44, and at the same time pressing the character input key 54,
In this way, the horizontal pin 45 slides on the platform 68 and moves the longitudinally moving table 40 and the dial 75 on the table 40 in the raised state toward the platen 8. The first actuating rod 47, the second actuating rod 48, the upward protrusion 61, etc. function in the same manner as in the case of transferring the upper type characters 73 described above, and the impression of the lower type characters 73' is transferred to the typing paper via the carbon paper 26. 18 (in the case of transferring the lower printed characters 73', the upper printed characters 73 are separated from the platen 8 and are not transferred), and after the lower printed characters are transferred, the up/down switching key 56 is pressed. and key for typing 5
6 (if the next character to be typed is also a type in the lower row, you can keep the up/down switch key 58 pressed down) and move the entire body back to the return springs 87, 8.
8 and 89, and furthermore, if it is desired to advance the platen 8, the platen 8 can be pressed and released only on the advance key 5, and in this way, the second operating rod 48 The horizontal moving table 5 can be advanced by moving the upward protrusion 61 to the adjacent guide groove 31 by the movement of the downward protrusion 62 through the guide hole 65. To return the platen 8 further, the horizontal moving table can be moved. 5 and push it back against the force of the push ball 22.

[Effect of idea]

As mentioned above, the present invention has a configuration in which when the type collides with the platen, it is stopped by the jump type stopper and the upward protrusion is locked in the guide groove to prevent the type from swinging due to the shock. Therefore, it has excellent effects that can fully achieve the intended purpose.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is a perspective view showing the whole, Figure 2 is a partially cutaway bottom view with the bottom cover removed, Figure 3 is a plan view showing the left-right moving platform with the platen removed, and Figure 4 is Figure 1A. −
5 is a sectional view taken along line A, FIG. 5 is a sectional view taken along line B-B in FIG. 1, FIG. 6 is a sectional view taken along line C-C, and FIG.
The figure is a sectional view of the main part along line D-D in Figure 1, Figure 8 is an explanatory diagram of the relationship between the platen and pinch rolls, etc.
1 to 4 are plan views showing the movement relationship between the second operating rod and the guide hole left/right direction moving table in the order of operation. 1... Base board, 2... Rear low place, 3, 3'... Rail, 4, 4'... Concave groove, 5... Horizontal movement platform,
6, 6'... Support wall, 7... Recess, 8... Platen,
9, 9'... Central axis, 10, 10'... Shaft hole, 11
...Large gear, 13... Cutting line, 14, 14'...
Elastic tongue-shaped portion, 15... Bearing groove, 16... Shaft rod, 1
7...Small gear, 18...Typing paper, 1
9... Pinch roll, 20... Gear-shaped disk, 21
... Spring, 22 ... Push ball, 24 ... Deep groove for setting, 25 ... Front side wall, 25' ... Rear side wall, 26 ...
...Carbon paper, 27...Tapered rib, 28
...Tapered protrusion, 30...Piece, 31...
Guide groove, 32...Plate spring, 33...Push ball, 35
... High place, 36 ... Recessed part, 37, 37' ... Long hole, 38, 38' ... Horizontal outward projecting plate part, 39,
39'...Vertical downward protruding plate part, 40... Front-back and up-down direction movable table, 41... Capped cylindrical part, 42, 42'
...Downward projecting rod, 43...Lid piece, 44...Descent plate,
45... Lateral pin, 47... First operating rod, 48...
...Second operating rod, 49...Third operating rod, 50...Front low point, 51, 52, 53...Slanted guide edge, 54
...Key for typing characters, key for sending from 56...
56... Up/down switching key, 57... Shaft, 57'
...Leg portion, 58, 58'...Pipe portion, 59...Protrusion portion, 60...Extension portion, 61...Upward projection, 62
...Downward protrusion, 63...Inclination guide part, 64...
Linear guide part, 65... Guide hole, 67... Inclined guide surface, 68... Tabletop part, 70... Loading hole, 71...
Convex disk, 72... Large diameter portion, 73, 73'... Type, 74... Strip plate, 75, 76, 77... Dial, 78, 79... Spare dial storage section, 80...
Coil spring, 81...Finger operated stopper, 8
2... Notch, 83... Elastic plate, 84... Warty projection, 85... Jump type stopper, 87, 88, 8
9... Return spring, 90... Linear spring, 92...
... Paper guide member, 93 ... Display characters, 94 ...
Character selection member, 95, 95'... window, 96... mounting leg, 97... receiving leg, 98... insertion/extraction leg, 99,9
9'...Regulation stopper, 100...Escape recess, 101...Escape recess, 102...Stop screw,
103...Latching claw, 104...Retaining ring, 106...
...bottom lid, 107...knob, 108...lid body, 1
09, 109'...Knob, 110...Lower limit regulating portion, 111...Floating prevention claw, 112...Document holding device, 113...Strut, 114...Clip, 1
15...holding rod, 116...horizontal bar.

Claims (1)

[Scope of utility model registration request] A horizontally movable platform for mounting a platen, which has a number of small projecting plates protruding downward on the horizontal line on the bottom surface, and a number of guide grooves on the bottom surface that determine the character spacing for typing, and A base plate on which the directional moving table is placed so that it can reciprocate in the left and right direction, and a spring pusher that locks freely between the lower edges of the above-mentioned projecting plate and temporarily stops the left and right moving table at each character interval. A ball jumping type stopper, an operating rod that enters the lower surface of the horizontally moving table on the upper surface of the platform, and an operating section that reciprocates the operating rod in the front and rear direction;
It consists of an upward protrusion and a downward protrusion provided on the upper and lower surfaces of the entry end of the operating rod, and a guide hole provided with an inclined guide part and a linear guide part provided on the upper surface of the base, and the downward protrusion is located at the rear of the operating rod. When moving in the direction from the inclined guide part to the linear guide part, the upward protrusion corresponds to the position of the next character to be typed, even though the downward protrusion is in the middle of the inclined guide part. The horizontal movement table and platen guided by the guide groove are quickly moved to the place where the characters are to be typed, at the same time as the jumping type stopper jumps over one character, and the character is ready for typing. When moving in the direction from the linear guide part to the inclined guide part, the downward protrusion moves away from the inclined guide part due to the locking action of the jump type stopper even though the downward protrusion has come out of the linear guide part. As a result, the upward protrusion moves in a straight line until it comes out of the guide groove, and at the same time, the downward protrusion quickly short-circuits in the middle of the inclined guide part. A feeding device for a platen in a typewriter machine, characterized in that the feeding device for a platen in a typewriter shop is characterized in that the feeding device returns to a starting point after returning to a starting point, and type letters while the upward protrusion remains in a guide groove.