DE60300882T2 - Rotating braille display device. - Google Patents

Description

BACKGROUND OF THE INVENTION

Field of the invention

The The present invention relates to a stylus holding apparatus for holding a plurality of pins, for example six pins, eight pins or more, and on a stylus display device for continuous display desired Signs and / or graphics, either Braille or general (for example for Non-disabled), two-dimensional or three-dimensional. More accurate it refers to a stylus holding and moving mechanism, through which the pins move up and down to and from a touch surface and on desired positions or heights above the touch surface being held.

Technical background

In a conventional one Braille display device, that usually a stylus indicator is a plurality of Braille cells, i. Display cells arranged in a given number in a (braille) line. The styli (hereinafter often simply referred to as pins) in the Braille or display cells of a (Braille) line be for the stylus display electromagnetically moved up and down. After this a user (visually impaired) the tactile pins in a braille line touched and has read, will be the next Braille display. By sequential display of such Braille print lines from display cells, the user reads line around braille information.

The Japanese Patent Laid-Open Publication 2000-122526 discloses the Features of the preamble of the present invention. Especially she discloses a continuous braille display or Tactile pin display apparatus, which includes the following six components. A first ingredient comprises a rotating display drum with a plurality of braille cells, each consisting of six pins, wherein the six pins in each Braille cell raised and lowered in various ways to display a braille. A second ingredient includes a display cover that covers the display drum, but a portion of the display drum on its braille display window, i.e. the braille display, free. A third ingredient includes a display command input unit for inputting display information. A fourth component comprises a display setting unit for selective up and down Movement of the six pins in a braille cell relative to a touch surface at a non - display of Braille cells, causing the Combination of the positions (the heights relative to the tactile surface) of the six Pens for displaying a Braille character in accordance with a character signal input to the display command input unit is preset.

One fifth Component includes a display drum rotary drive unit, relative to the display drum in response to a braille display command to turn the display lid so that the braille cell, the in terms of the combination of the positions of the six pins has been preset is brought to the braille display window to look there outside to be exposed, and thus the braille cell, the outside of the braille display window was brought to a non-display of Braille cells becomes. A sixth component comprises a display-holding unit, the combination of the braille cell pens at the display location, i.e. Braille display window.

The Japanese Patent Laid-Open Publication 2000-206873 proposes another continuous braille display device comprising: a rotating Display drum with a plurality of braille cells, each consisting of six pins raised in different ways and lowered to indicate a Braille character, wherein each pin consists of a permanent magnet; a first arrangement, to selectively lift the pins using electromagnets or lower; and a second arrangement for passing the pins through two types of shape memory alloy springs and heating elements in the raised and lowered positions hold.

The Japanese Patent Laid-Open Hei 09-127859 discloses a Arrangement in which an existing of a leaf spring elastic Boom is used to move the pins to specific positions (Heights) over the pins a tactile surface to keep.

Of Further, Japanese Patent Laid-open Hei 09-311622 an arrangement in which the frictional force of a rubber sheet is used is to move the pins up and down relative to the touch surface hold.

The usual Braille displays for example, according to Japanese Patent Laid-Open Publications However, 2000-122526 and 2000-206873 have disadvantages like a complicated one Build up the organs to move and hold the pins, making it difficult, the size, the Weight and reduce the price.

The conventional braille display or stylus display devices will be described more concretely hereunder.

First, Japanese Patent Laid-Open Publication 2000-122526 requires a very complicated structure comprising: antiskid elements (Ref 15 in 5 and 6 the disclosure) to prevent the pins from sliding off at non-display locations in either an unintended direction, either up or down; and a display holding unit (reference numeral 9 in 2 ibid.), ie hook sections (reference numeral 22 in 4 . 8th and 9 ibid) of locking members (reference numeral 22a in 8th and 9 ibid) to hold the pins against a strong force, for example, the force of a user's finger pushing the pins down.

In order to prevent the pins from being pivoted or rotated, it is further necessary to have one end of each pin (reference numeral 7b in 6 ibid) and anti-swiveling slots (ref 4e in 5 and 6 ibid.). In addition, three pins (reference numeral 7 ibid.) in each column of each braille cell (reference numeral 6 ibid) by three actuators (reference numeral 17 in 7 ibid.) which are arranged in the same place and are driven at the same time. In addition, under abnormal conditions, the rotation of the rotary drive motor is disturbed or interrupted when, for example, a foreign matter such as a paperclip falls on the braille cells on the outwardly exposed Braille display window and interposed between the rotary display drum (Ref 4 ibid.) and another element of the device. As a result, the engine experiences an undesirable overload or abnormal load. This may undesirably result in the device becoming too hot, giving off smoke or even catching fire if there are no means to protect the device from it.

Secondly, the apparatus disclosed in Japanese Laid-Open Hei 09-127859 is not a continuous braille display apparatus. A display plate (reference numeral 2 there) is fixed and displays the Braille characters linearly. In other words, neither the display panel ( 2 ) still displays braille cells continuously in a linear motion.

Furthermore, pins (reference numeral 3 there) to display Braille characters by leaf springs (reference numeral 8th there). The leaf springs ( 8th ) but are not in the display panel. ( 2 ) or a plate (reference numeral 4 there), but on a holding element support plate (reference numeral 9 there). The leaf springs ( 8th ), the pins ( 3 ) against the downward movement of the pins ( 3 ) to the display plate ( 2 ), but not against the upward movement of the pins ( 3 ) from the display plate ( 2 ). This means that they provide only one-sided holding power.

Finally, the apparatus disclosed in Japanese Laid-Open Hei 09-311622 can not provide a continuous display. Pins (reference numeral 2 There) are arranged in a predetermined number of rows and columns in a single display area for the display of characters and / or graphics. The display area can not move, rotate or move linearly so that a continuous display can not be realized. A lower brake plate (reference numeral 10 there) of rubber material is provided to the pins ( 2 ) to keep. The lower brake plate ( 10 ) but is not integral with a flat display plate (reference numeral 1 there), on which the pins ( 2 are arranged, supported or held, but is as one of the flat display plate ( 1 ) separate element mounted in the device.

SUMMARY OF THE INVENTION

One The problem underlying the present invention is that a stylus holder and a stylus indicator to disposal to display the character and / or graphic continuously can, taking the device a very simple mechanism for moving and holding the pens possesses, whereby small size, low weight and a low price can be realized.

The The present invention provides a stylus holder comprising: a holding element with a tactile surface and a first number of holes intended for to pick up a first number of styli in the holes in it relative to the touch surface can be moved up and down, to display characters and / or graphics, with the styli in multiple Rows and multiple columns and in a second number of groups the touch surface are arranged; and elastic elements in the second number, which correspond to the second number of groups of styli and are arranged on the holding elements to the Taststifte with the holding element so to squeeze and hold that every stylus in each group Of Taststiften pressed by the elastic element corresponding to him becomes and thereby relative to a desired height to the touch surface can be held and that each stylus moves up and down can be when a force exceeding a given value up and down on each of the stylus pins, thereby characterized in that the second number is smaller than the first number and that every stylus on its one side is through each one Group of styli pressed corresponding elastic element becomes.

this Tactile pin holding apparatus accordingly Stylus pins moved and held by a simple mechanism be, with a single elastic element multiple styli presses and holds, causing the device small, light and cheap can be designed.

It must be noted here that, according to the present description the term "elastic" element in one wide meaning an elastic element. More concrete can not only "elastic" element mean a rubbery elastic element, but also a spring-like elastic element, which can be referred to as a "resilient" element, as long as Such an "elastic" element required for this Owns function.

A first preferred embodiment is that the second number the number of lines of styli is and that each of the elastic Elements that for Each row of styli is provided, an elastic ring is, the ring-shaped on the holding element (or the rotating element) sits around each he presses styli pins in each line from his one side and to keep.

Further a second preferred embodiment is that the second Number is half the number of columns of styli and that Each of the elastic elements is an elastic rod that extends extends in the direction of the columns and so between a pair of adjacent Inserted columns of styli is that the styli in the one column of the column pair through one side of the elastic rod is pressed and held, while the styli in the other column from the opposite side of the elastic rod are pressed and held. In the present Description is the term of "column direction" in meaning a direction in which styli aligned in each column are.

These first and second embodiments are preferred embodiments, the benefits of a simple mechanism, a small size, one low weight and a low price of the stylus holding device or of the stylus holder to realize using stylus display device.

Further a third preferred embodiment is that each of the Taststifte has an annular groove for engagement of the elastic member. By this configuration, each stylus can be safer by the be held elastic element.

Further a fourth preferred embodiment is that the holding element (or the rotating element) is disc, drum or conveyor belt-shaped.

Further there is a fifth preferred embodiment in that each of the elastic elements a non-metallic annular Element, a non-metallic rod-shaped element, a non-metallic tubular element or a coil compression spring.

Further a sixth preferred embodiment is that each the holes an engaging portion and that each of the styli in Each hole comprises a step portion which is connected to the engagement portion each of the holes can engage so that each of the styli in a desired Height relative to the touch surface is held when the step portion of each of the styli is engaged with the engaging portion of each of the holes.

By this sixth preferred embodiment allows the styli safer and with less holding power of each of the elastic elements in the desired Height kept which causes the styli to be moved up and down with less force can, when the step portion of each stylus from the engaging portion of each Hole solved is.

In The sixth preferred embodiment is another preferred one Embodiment in that the Taststift-holding device further engagement-releasing elements which are to be coupled to each stylus to the engagement the step portion of each stylus on the engaging portion of each the holes to solve.

By this further preferred embodiment is made possible that the styli safer and with less holding power of each of the elastic elements in the desired Height kept which causes the styli to be moved up and down with less force can, when the step portion of each stylus from the engaging portion of each Hole solved is.

In an exemplary embodiment of the invention, which may optionally incorporate any of the above preferred embodiments, a stylus indicator includes: a rotating member having a tactile surface and a first number of holes and arranged to have the first one in the respective holes Number of styli, which can be moved up and down relative to the tactile surface to display characters and / or graphics, wherein the styli are arranged in a plurality of rows and a plurality of columns and a second number of groups on the touch surface and the second number is less than the first number; elastic elements in the second number, which correspond to the second number of groups of styli and are arranged on the rotating member to press and hold the styli with the rotatable member so that each of the styli in each group of styli on its one side passes through that of each group of styli corresponding resilient member can be pressed and thereby maintained at a desired height relative to the tactile surface and that each stylus can be moved up and down when a force exceeding a given value acts up and down on each of the styli; a rotary drive member coupled to the rotary member for rotating the rotary member; a pen height return member mounted near the rotating member for returning the tactile pins to a return height when the tactile pins are brought into contact with the pen height return member during rotation of the rotary member; Actuators mounted near the rotating element to move the styli; and selective actuators coupled to the actuators to selectively drive the actuators to selectively position the styli at desired heights relative to the touch surface.

this Tactile pin display apparatus accordingly Stylus pins through a simple mechanism in which a single elastic element presses and holds several styli, moves and kept, making the device small, light and cheap can be designed. Next you can Sign and / or graphic (braille sign and / or blind graphic) in each chosen Length or Number by a user, for example, simply his finger placed on the rotating element, continuously felt or read become.

In the exemplary embodiment a preferred embodiment is that the number of Actuators is equal to the number of rows of styli and the actuators are spaced from each other. By This embodiment becomes even simpler, smaller and lighter Tactile pin display apparatus realized with a small number of actuators and freedom for the design the external dimensions of each actuator further increased.

Further In the exemplary embodiment, it is a preferred one Embodiment in that the number of actuators equal to the Number of rows of styli and the actuators to each other be driven at different times. By this configuration becomes an even easier, smaller and lighter stylus indicator with a small number of actuators realized and the full peak current for the Drive the actuators through the selective drive elements on reduced.

Further In the exemplary embodiment, it is a preferred one Embodiment in that the stylus indicator continues includes an organ for detecting an abnormal load to a to detect the abnormal load applied to the rotating element. This can increase the safety of the stylus indicator, by preventing the rotary actuator (the motor) from overheating, Emits smoke or even catches fire.

Further In the exemplary embodiment, it is a preferred one Embodiment in that the stylus indicator continues a marked portion attached near the rotating member includes a user puts his finger to the styli to feel. This allows the (visually impaired) user easily the Position (the initial Touch position) to which a finger is to be placed.

BRIEF DESCRIPTION OF THE DRAWINGS

The The present invention will be described below with reference to FIGS attached Drawings are described. It should be noted that all drawings be shown for the purpose, the technical concept or examples of the present invention, but no exact Represent dimensions or parameters of the elements shown therein.

1 Fig. 12 is a schematic plan view showing a main part of a rotary element for a continuous stylus display device (braille display device) according to an embodiment of the present invention with an upper disc removed.

2 is a schematic cross-sectional view in the plane S1X-S1Y of 1 in which a part of the rotating element of the 1 with the attached upper disc can be seen.

3 Fig. 12 is a schematic plan view showing a part of another rotary element as a component of a stylus display device according to an embodiment of the present invention with an upper disc removed.

4 is a schematic cross-sectional view in the plane S2X-S2Y of 3 in which the rotating element of the 3 with an attached upper disc can be seen.

5 FIG. 12 is a schematic plan view illustrating a part of still another rotating member as a component of a stylus display apparatus according to an embodiment of the present invention. FIG finding, with an upper disc has been removed.

6 is a schematic cross-sectional view in the plane S3X-S3Y of 5 in which the rotating element of the 5 with an attached upper disc can be seen.

7 Fig. 12 is a schematic plan view showing a part of a flat plate member as a component of a stylus display apparatus according to an embodiment of the present invention, with an upper flat plate removed.

8th is a schematic cross-sectional view in the plane S4X-S4Y of 7 in which the flat plate element of 7 with a top flat plate attached to it.

9 Fig. 13 is a schematic oblique view showing the concept of a part of a stylus display device according to an embodiment of the present invention.

10 is a schematic plan view illustrating the concept of a part of the device of 9 shows, with an in 9 shown housing has been removed.

11 is a schematic side view of a part of the device of 10 ,

12 FIG. 12 is a schematic block diagram showing a control circuit for controlling a rotary element driving motor, actuators and so on. FIG.

13 FIG. 12 is a schematic cross-sectional view of a portion of a stylus holding device according to an embodiment of the present invention with a pin engaged with a lower disc. FIG.

14 is a schematic cross-sectional view of the same device as in FIG 13 in which a process of releasing the engagement of the pin with the lower disc, as in 13 shown, can be seen.

15 Fig. 12 is a schematic cross-sectional view of the same apparatus showing a state when the engagement of the pin with the lower disc has been released.

16 Fig. 12 is a schematic cross-sectional view showing a part of another stylus holding apparatus according to an embodiment of the present invention.

17 is a schematic cross-sectional view of the same device as in FIG 16 in which a process of releasing the engagement of the pin with the lower disc, as in 16 shown, can be seen.

18 Fig. 12 is a schematic plan view showing the concept of a part of a stylus display device according to an embodiment of the present invention.

19 is a schematic side view of a part of the device of 18 ,

20 is a schematic cross-sectional view, in the part A of the device of 18 can be seen enlarged.

21 is a schematic cross-sectional view of a part of the device of 18 in the plane SX-SY.

DETAILED DESCRIPTION THE INVENTION

According to the above described aspect of the present invention makes it possible the stylus indicator, continuously on a rotating element any desired number of pens (pen cells or braille cells), i. Sentences everyone desired Length, to display (to touch or to read). This is different then the case in which only one line (one braille line) at a time displayed (touched or read) and refreshed. Moreover has the (visually impaired) user in the stylus indicator according to the above described aspect when he puts his finger on the cylindrical surface (the touch surface) lays, the feeling as if his finger on a blind writing paper from left to right moved to the right or the finger to a braille paper from the left to the right.

Further, according to the above-described aspect of the present invention, in the stylus holding apparatus and the stylus display apparatus, respectively, a holding member or rotating member composed of a double-layer disc, a double-layer drum or a conveyer belt moving a double-layer pen holder plate mechanism is preferably used. The outside of the disc, the drum or the pin retaining plate mechanism acts as a tactile surface. The term "tactile surface" is used herein to mean a user interface (eg, a disabled person) who palpates the top surfaces of the pens with his or her finger (usually an index finger), thus allowing the user differences in heights Usually a display cell (braille cell) consists of six pins arranged in three rows and two columns arranged display cells, the user can perceive the changes in the heights of the pins as display cells (braille cells). According to the elementary Braille system, the height of each pin is chosen to be either zero (same level as or lower than the touch area) or one (raised to a certain height above the touch area). By selecting different zero-one combinations of the pens different braille characters are assigned.

Of the According to the present description, the term "two-dimensional Display "in meaning a display that uses zero-one combinations or two-value combinations based. On the other hand, the concept of a "three-dimensional display" becomes significant a display that uses combinations of three or more Values. More specific can be the three-dimensional display the height every stylus can not only be zero or one, but can as well assume a different value or other values between zero and one.

The Height and the diameter of each pin can be arbitrarily designed. Practically it is considered preferable that each pin has a diameter in the range of about 1.0 mm to 2.0 mm, while raising in one Range of about 0.5 to 0.8 mm. The reason for this There are parameters within the ranges to change in it, the stylus holder or display device specific users adapt.

concretely There are differences between adults and children, between People with pouring and little fingers as well as between humans, who are used to braille are, and people who are not used to it. For those who believe in Braille used are, can the diameter and the height of each Pin be small while for not Used to it these dimensions should be cast. The reading speed (scanning speed) fast reader should be about 300 to 400 characters per minute, while it is about 50 to 100 characters per minute for slow readers. Consequently is the reading speed averages about 200 characters per minute.

It It is preferred that each pin has a curved surface, for example hemispherical or roughly hemispherical, has at both ends. The material of the pins is preferred stainless steel, nickel, aluminum, anodic surface treatment was subjected to brass, metals of the iron group, the one Have been subjected to antirust treatment, metals of the iron group, coated with a fluorinated plastic for rust prevention were, copper materials with an antibacterial effect, plastics, plastics with admixed photocatalyst particles and with a photocatalyst selected stainless steel. Furthermore, the with the Fingers to touch, curved area preferred from the standpoint of low frictional resistance a mirror surface.

All elastic elements such as a non-metallic annular element, a non-metallic rod-shaped A member or a non-metallic tubular member as in above Compound with the various aspects of the present invention described, are preferably made of a rubber material, a soft synthetic resin (soft plastic) or a rubber O-ring. The Rubber material is preferably a silicone rubber (Si), a fluororubber (FKM), an acrylonitrile butadiene rubber (NBR) or a natural rubber (NO). The soft synthetic resin is preferably a material with sufficiently large elastic deformation made of nylon resin, polyvinyl resin, fluorinated resin, silicone resin, polyethylene resin and the like selected becomes.

in the Trap of O-rings, it is advantageous for cost reasons, commercially available To use O-rings. The cross-section of the O-ring, i. the cross section the string for the O-ring preferably has the shape of a circle, coarse circle, Rectangles or rhombus. Moreover, according to the present invention the O-shape of the O-ring is not necessarily a perfect one O-shape. It can be essentially O-shaped. For example, can they have a cut out section that is the O-shape interrupts so that the shape can be called a C-shape. In the present specification, the term "O-ring" becomes meaning used to capture O-rings that have a cut-out section can, as long as the o-ring has the required function of pressing and holding has to be used together with a pin retaining element or a rotating pin Element one or more styli in the corresponding one or in several holes to keep.

For the elastic Element is effective, a lubricating material such as fluorinated To have plastic on its outside or inside, and indeed because, because of this, the frictional force between the elastic Element and the stylus over can be kept stable for a long time.

The Material for the helical compression spring is preferably made of metallic materials like piano wire and soft synthetic resin materials such as nylon resin and polyvinyl resin selected.

the Tactile pin holding apparatus According to the present invention, the tactile pins can by a simple mechanism to be moved and held, with a single elastic member presses and holds a plurality of styli. Corresponding is such a device Not only effective to hold styli so Braille displays but also to hold styli so that they are two-dimensional or three-dimensional general characters and / or general graphics Show by the stylus in a random number of lines and a random number of columns.

In In such a case, it is also possible, an elastic element in the form of a long rod (or a string or a thread) between each pair of adjacent columns of pens or between to arrange each pair of adjacent rows of pins, the elastic element on one side the several pins in one column (row) and on the other side several Pins in the other column (line) presses. It is also possible to enter very long elastic element in the form of such a long one Rod and the elastic element between each pair of adjacent columns (rows) of pins to arrange by the elastic element waves folded is, where the plurality of convolutions in number to the number of Column (row) pairs corresponds. The present description Accordingly, therefore, the plurality of between the Taststifte to be introduced elastic elements a single continuous be elastic element, as described above as a plurality of elastic elements acts. In other words, the term of "elastic Elements "a single elastic element mean that the function of several elastic Elements, elastic bars or has elastic segments.

Generally said is the pin holding force with which each elastic element engages each stylus holds, prefers 0.3 to 1.0 N (Newton), stronger preferably 0.4 to 0.8 N.

The Pin holding force is considered critical in the present specification Force, such that when a force is applied to each pin, which is equal to or less than the critical force, the Pen in position or height relative to the touch surface remains that he currently has while the stylus moves away from this position or height relative to the tactile surface, when one exceeds the critical force Force on each pin attacks. The pin holding force is therefore typical the one critical force that when a user is using each pen presses his finger with a force, that exceeds the critical force, the stylus to the touch surface pushed down will, while the pen in its respective height remains when the user with a force equal to the critical Force is less than this, presses on the pin. Generally is the average pressure force of a user's finger only about 0.1 N.

in the Case of the sixth preferred embodiment of the present invention but the pin holding force exerted by each elastic element can only about 0.1 N, since the height of each pin relative to touch surface by the engagement between the step portion of the pin and the engagement portion of the hole can be kept. An advantage of such a low Holding force is that the force with which each actuator the pin relative to the touch surface moved up and down, can be kept small, causing the actuator in its size and its energy consumption can be made smaller and that whole device also in its size, its weight and price can be made smaller.

In order to every elastic element the desired Pin holding force is preferred, the material, the hardness, the Cord diameter, the structure and the like for the elastic Element to choose. This will be in accordance with this with the various embodiments of the elastic elements or Pin retaining mechanisms described.

in the Trap of elastic arms, which consist of leaf springs, the are made of stainless steel, it is preferred that the Leaf spring one leaf thickness from about 0.06 to 0.07 mm, a sheet width of about 2 mm and a Has amount of spring deflection of about 0.7 to 0.8 mm.

in the Trap of O-rings, each ring-shaped on a rotating Element are arranged to each with its one side a plurality of styli with a diameter of about 1.2 mm, made of nitrile rubber exist, to squeeze and hold, it is preferred that the O-ring has a cord diameter of about 1.4 to 1.6 mm, while the elastic compression (amount of cord diameter shrinkage) every o-ring caused by the pressing of the pins, is about 0.3 to 0.6 mm, and that the string cross section of the O-ring takes the form of a circle, coarse circle, rectangles or rhombus possesses, as from commercially available O-rings selected.

Next, a tagged portion to which a user places his finger can be selectively attached to each stylus display device. If such a marked portion is needed, it should be placed near the rotating element. The shape of the marked section can be selected. In case of a shit For example, it is formed by turning a ben-shaped rotating element first by placing a wall about 2 mm wide and about 0.3 mm high near the periphery of the rotating element, and then removing a portion of the wall, thereby removing the wall Section becomes the marked section. On the other hand, a portion of the device housing that is designed to be at substantially the same level as the rotating element and near the periphery of the rotating element may be provided with a recess having a depth of about 0.3 mm and has a bottom of eg triangular or roughly arrowhead-like shape, whereby the recess becomes a marked portion. Thereby, the user can simultaneously feel with his finger both the marked portion and the pins on the touch surface of the disk-shaped rotating member.

in the Trap of cylindrical and conveyor belt-shaped rotating Elements, a marked section can also be optionally attached. For example, a cylindrical one rotating element normally designed so that the axis of the cylinder parallel to the base area or runs to a horizontal plane of the stylus indicator and that is why the cylindrical surface rotates so that they in an upper part of the display device is exposed and in one lower part of the display is hidden. Usually The upper part of the display is like a window over a Angle of rotation of about 45 degrees open. In such a case, therefore a marked portion at an end portion of the housing of the Display device attached, this section being close to one end of the cylinder of the cylindrical rotating element located at the top of the display device and this is facing. Therefore, a user can finger at the same time both the marked section and the styli on the cylindrical surface palpate.

In Similarly, a stylus display device in which a conveyor belt-shaped rotating Element is used, designed so that the axes of all rotary actuator like rollers and gears in the display parallel to the base area or to a horizontal plane and that therefore the conveyor belt surface itself so it turns loose in an upper part of the display device is hidden and hidden in a lower part of the display device. Here is the upper part of the display usually with an open window provided in which about 40 to 50 indicators (Braille). In such a case becomes a marked portion at an end portion of the housing of the Tactile pin display apparatus attached, this section being close to one end of the Belts or the chain of the conveyor belt at the top of the display is located and this is facing. Therefore, a user can use the Simultaneously finger both the marked portion and the styli on the surface of the conveyor belt palpate.

When next will in cases if elastic cantilevers are used as the elastic elements each elastic cantilever preferably made of a leaf spring made of stainless Steel and a piano wire selected at their free ends each a V-shaped have curved portion as an engaging portion, with the Ring groove of each stylus should come into engagement. By the to the Example V-shaped engagement section elastically pressed into the annular groove of the pin, the pin can with a desired holding force at the height held by the engagement between the. engaging portion the elastic cantilever and the annular groove is defined. in this connection it is easily possible in the upward movement Each pin in each hole has a different pin holding force of each elastic one Outrigger than during the downward movement provided.

What next the actuators relates to the styli relative to the sensing surface of the Holding element or of the rotating element according to the present invention move up (either upwards or down), so it is preferred that each such actuator be among the following Elements or mechanisms is selected: a motor (pulse motor or like) with its cam mounted on its shaft; one electric cylinder (motor with a lead screw on its shaft); a linear motor; an electromagnetic coil; one from one Permanent magnet produced and rotated by an electromagnet Cam; a plate-shaped electromechanical polarized in the direction of its thickness Transducer element (a piezoelectric element); and the same.

One preferred element to the styli to their return position or height attributed (the Is to lower or raise pins to their first position) a cam with gradual inclined surface or a rotatable roller.

It is preferred that the actuators, the cam, the roller and the like, with which the styli are moved, in the vicinity of the rotating Elements are arranged, e.g. on the housing or socket of the stylus indicator.

It is further preferable that the stylus holding device and the stylus display device are provided with a lubricant at all the pin moving portions. For example, it is preferable to firmly bond each pin to a fluororesin resin (eg, sintered coating) or a solid plastic-based lubricant layers. Further, it is possible to allow the holding member, the rotating member, the tactile pins and the annular members to include, for example, a fluororesin. Thereby, the frictional force between each stylus and an element or elements supporting and supporting the stylus can be reduced and made constant. As a result, for example, the pin holding force of each elastic member can be made constant.

Hereinafter, stylus holding devices or display devices (braille holding or displaying devices) according to certain non-limiting embodiments of the present invention will be described with reference to the drawings. In 1 . 3 . 5 . 10 . 13 . 16 and 18 only a part of the stylus for the display of pen patterns (braille) can be seen to simplify the drawings. In fact, an optional number of pen groups (Braille cells) for about 8 to 50 characters (Braille characters) are arranged annularly and at equal angular intervals on the tactile surface of each rotating element.

EMBODIMENT NO. 1

1 Fig. 12 is a schematic plan view showing a main part of a rotary element for a continuous stylus display device (braille display device) according to the present embodiment, with an upper disc removed. 2 is a schematic cross-sectional view in the plane S1X-S1Y of 1 in which a main part of the rotating element of the 1 with the attached upper disc can be seen. 9 Fig. 12 is a schematic oblique view showing the concept of a main part of a stylus display apparatus according to the present embodiment. 10 is a schematic plan view illustrating the concept of a main part of the device 9 shows, with an in 9 shown housing has been removed. 11 is a schematic side view of a main part of the device of 10 , 12 FIG. 12 is a schematic block diagram showing a control circuit for controlling a rotary element driving motor, actuators and so on. FIG.

The stylus indicator 400 includes seven main components. A first major component comprises a rotating element 410 with a plurality of cells (braille cells) made up of movable pins 601 exist, as in 9 shown, and are arranged annularly on its touch surface. A second major component comprises three O-rings 370A . 370B and 370C , which are made of rubber and in recessed grooves on the rotating element 410 are arranged in a ring around the pins 601 press radially from one side of each pin and hold the pins as in 1 shown. A third main component comprises three actuators (pulse motors 1 to 3 , disc-like cams, etc.) to the pins 601 to raise to a height of about 0.7 mm above the touch surface when the rotating element 410 is rotated so that the actuators come into contact with the pins, as in 10 shown. A fourth major ingredient comprises three rolls 440 to make the height to which the pins have been raised uniform when the rotating element 410 is turned as in 10 shown. A fifth major ingredient comprises three rolls 430 , in the direction of rotation of the rotating element 410 down from the rollers 440 are arranged and those with the pins 401 Lower the pins to the touch surface (ie, the first position or pin return position or pin return height), or allow the pins to remain in their lowered position (ie, their first position) when the rotating member 410 is turned, as in 10 shown. Thus, the rollers can 430 are referred to as pin height feedback elements (pin position feedback elements). A sixth major component includes selective actuators (not shown) to selectively activate the three actuators. A seventh main component comprises a rotary drive member (not shown) for rotating the rotary member 410 ,

The present embodiment, such as in 1 and 9 shows a case in which each cell (Braille cell) consists of six pins (three lines and two columns) to display a character (Braille). The six pins are basically the same. Every pin 601 It is made of stainless steel with a diameter of about 1.2 mm and a length of about 8 mm and has a roughly hemispherical shape at each of its ends.

1 and 2 schematically show an example of a structure around the pins 601 to keep. Three O-rings 370A . 370B and 370C are arranged annularly and coaxially in correspondence with each of the three lines of each cell. All the annularly arranged pins in the first rows of each cell are on their one side by the annularly arranged O-ring 370A pressed in the direction of the arrow, as in 2 shown, whereby the pins are held. In the same way, all the annularly arranged pins in the second lines and in the third lines on its one side by the O-rings 370B respectively. 370C pressed and held, as in 1 and 2 shown.

Although not shown here, it is also possible that each pin is provided with an annular groove (or grooves) as later in 20 shown (ring grooves 2 and 3 ) that allows each O-ring to intervene in such annular grooves to the Holding force of the pin to increase through the O-ring. If such annular grooves are provided, it is preferred that such annular grooves be mounted at such positions that the pin is in its first position (return position) or at a later described second position (display position) when each O-ring engages (one of such annular grooves) of each pin is engaged.

Everyone The three O-rings are made of nitrile rubber and have a diameter of about 1.5 mm. He is designed so that the elastic compression of each O-ring, which is caused by the pressing of the pins, about 0.4 mm.

The finger pressure of an ordinary user (a visually impaired person) when touching the pins 601 is only about 0.1 N (Newton). Therefore, the force for holding the pins in the structure of the 1 and 2 designed to about 0.4 N. Therefore, the pins can stop without being lowered when the user touches the pins.

Of the Stylus holding mechanism or stylus holder is simple, because the pin holding force exerted by each O-ring is independent of the position of the display unit (braille display unit) is uniform.

10 and 11 illustrate schematically a concept for actuators that use the pins 601 to a height of about 0.7 mm above the touch surface of the rotating element 410 Lift. Three actuators are arranged in accordance with the number of pens (namely, the number of lines) in each column of each cell (Braille cell) for one character (Braille). The respective actuators are mounted on the housing or a stand (not shown) so as to be spaced from each other at the periphery of the rotating element 410 to sit. Furthermore, the respective actuators are driven at different times. Since the actuators are spaced from each other, the outer dimensions of the actuators can be designed quite freely. In addition, the peak value of the actuator drive current due to the different drive times of the actuators, ie, by a sequential shift of the operating times of the actuators, can be reduced.

Each actuator comprises: a disc-like cam 421 ( 421A to 421C ), with the pins 601 comes into contact; a pulse motor 1 ( 1A to 1C ) for the rotation of the disc-like cam 421 ; and a transmission G1 and G2 to the disc-like cam 421 to engage with the pulse motor. When the rotating element 410 Turned clockwise as indicated by the arrow in 10 shown are the pins 601 the first, third and second rows of cells (braille cells) sequentially with the disc-like cams 421A . 421B and 421C brought together that the two pins in each row of each cell, the first, third and second row, either above the level of the tactile surface to be raised or left there, creating the total of six pins 601 each cell selectively against elastic contact forces (frictional forces) on the O-rings 370A . 370B and 370C to a height of about 0.7 mm above the sensing surface of the rotating element 410 raised and held there. That means the pulse motors 1A . 1B and 1C selectively lift the pins of the first row, the third row and the second row of the cell, respectively. It remains free, a stop (not shown) at the top of each pin 601 provide to the pin 601 to prevent it being lifted by any disc-like cam to a greater height than desired.

In the present embodiment, there are three rollers 430 , which can be rotated independently, provided to the pins 601 Lower to the touch surface. When the rotating element 410 is rotated in the clockwise direction, the peripheral speed of the pins of each line is different from that of the pins of the other lines. Therefore, it is preferred that the three rollers 430 can be rotated independently of each other and in accordance with the different peripheral speeds of the pins in the respective rows. The reference number 440 denotes rollers to make uniform the heights of the pins raised above the tactile surface. It is preferred that these rollers 440 can also be rotated independently of each other and in accordance with the different peripheral speeds of the pins in the respective rows.

The rotating element 410 can be rotated by an optional arrangement, for example using a gear and a pulse motor. More specifically, although not shown, a gear may be provided at a hub portion at the bottom of the rotating member 410 that of a wave 470 is rotatably supported, can be provided, which can be brought into engagement with a drive wheel, a pulse motor, etc.

An example of a control circuit for controlling a motor (a rotating element drive motor), an actuator (such as a pulse motor), etc. in the stylus (braille) display device 400 is with the block diagram of 12 shown. To briefly describe the block diagram, includes a control circuit 120 a parallel input / output unit (PIO: parallel input / output unit) 121 , a central processing unit (CPU) 122 , an analog-to-digital converter (A / D) 123 , a Spei cher 124 and a serial input / output interface (SIO: serial input / output interface) 125 , The to the CPU 122 connected PIO 121 receives a signal from a six-point pen display keypad 126 , a display control switch 127 and an optical coupler 128 is output, and supplies its output signal controlled by the CPU 122 to a pen-driving actuator 129 , The A / D converter 123 receives signals from a display speed control switch 130 and supplies its output signal to the CPU. The SIO 125 is both to the CPU 122 as well as a universal serial bus (USB) 131 connected. The CPU 122 is at the store 124 and an external memory 134 connected. In response to signals from the PIO 121 , the A / D converter 123 , the SIO 125 the store 124 and / or the external memory 134 delivers the CPU 122 its output signal to a motor control unit 132 , The engine control unit 132 delivers its output signal to a motor 133 and controls him.

The rotation of the pulse motor of the actuator is operated at times based on a phase detection performed by an optical breaker (not shown, eg, a rotating disk with perforations). The optical breaker has holes whose number equals the total number of pin columns on the rotating element 410 available. For example, the number of perforations is 96 if 48-character (48-cell) pens are provided on the rotating element. The times for driving the actuators can also be using the to drive the rotating element 410 used pulse motor derived. The phase detection can also be done with two optical couplers, which recognize the initial position for the activation or the Taststiftposition.

The rotating element 410 , which is a component of the stylus indicator 400 is, may consist of a polystyrene resin (PS), wherein a lower disc 410B and an upper disc 410A both have been shaped as slices and joined together. The top of the top disc 410A works as a tactile surface (reading surface) as indicated by the letters TS (tactile surface) in 2 indicated. Like in 2 shown are also the O-rings 370A . 370B and 370C inserted into the recessed annular grooves, which are attached to the lower disc 410B are attached. The pencils 601 are held so that they pass through the upper and lower disc 410A and 410B can slide. To the sliding movement of each pin 601 To smooth and stabilize, a sliding portion of the pins becomes like the surface of the pin 601 preferably coated with a fluoride-based solid lubricant.

It is assumed that in the stylus indicator 400 48 cells (characters) ring on the touch surface of the rotating element 410 are arranged. Since a cell consists of six pins (three rows and two columns), the total number of pins is 288 ,

Assuming that the reading speed (the tactility) 200 Characters per minute, should be the rotating element 410 have a rotational speed of about 4 rpm (revolutions per minute). When a user puts their finger on the tactile surface of the rotating clockwise rotating element 410 he feels as if his finger is following a Braille paper from left to right. Moreover, the stylus display apparatus according to the present embodiment can display characters continuously and sequentially so that the finger does not have to be moved every new line, which is the case in the case of a Braille paper or a conventional stylus (braille) display device Display and refresh only one line (one Braille line) at a time. Accordingly, this device is very convenient for users (the visually impaired).

In the stylus indicator 400 as it is in 9 is shown, a roughly semicircular part of the rotating element 410 with the pins 601 from a housing 800 left open. A marked section 840 which is formed by a depression or bump is in the vicinity of the exposed part of the rotating element 410 appropriate. Through the marked section 840 the (visually impaired) user can easily recognize the initial tactile position to which a finger is to be placed. numeral 841 denotes a guide rail for the finger. The guide rail is an arcuate projection having a height of about 0.3 mm and a width of about 2 mm. This projection can be seen that the finger is on the rotating element or nearby.

Although not shown, the stylus indicator includes 400 According to the present embodiment, a detecting circuit for detecting an abnormal load and automatically and instantaneously stopping the motor driving the rotating element when a predetermined value is jammed because of a malfunction, for example, because a foreign object is caught between the rotating member and the opening Exceeding load on the motor is applied.

numeral 811 denotes a switch for forward rotation (switch for continuous reading) to the rotating element 410 to rotate clockwise and display sequential and continuous characters (Braille characters). numeral 812 denotes a switch to the sub break the rotation to stop continuous reading. numeral 813 denotes a switch for reverse rotation (switch for repeated reading) to the rotating element 410 to turn counterclockwise, ie in the reverse direction, and to re-read characters that have already been read once. reference numerals 814 to 819 are Perkins (braille) input tokens used by a (visually impaired) user to enter characters (braille). These character (braille) input switches 814 to 819 correspond to the braille numbers 3 . 2 . 1 . 4 . 5 and 6 , numeral 820 denotes a character input (braille input) check switch (entry switch) with which the inputted characters (input Braille characters) are checked when the user checks whether the inputted characters are correct. numeral 830 denotes an introduction slot for inserting a memory card, on which, for example, various text data are stored, into the apparatus.

As apparent from the foregoing, the stylus indicator allows it 400 According to the present embodiment, the stylus holding mechanism and the stylus holding device and the Taststift-lowering mechanism are very simple, so that size and price can be reduced. An example of the stylus indicator 400 that the present inventors have actually made, has a width of 210 mm, a depth of 130 mm and a maximum height of 30 mm as outer mass and a weight of about 450 g.

Hereinafter, another stylus holding mechanism and another stylus holding apparatus according to the present embodiment will now be described. 3 shows a part of another rotary element as a component for a stylus display device according to the present embodiment, and is a schematic plan view of its main part, wherein an upper disc has been removed. 4 is a schematic cross-sectional view of the rotating element of 3 in the in 3 shown level S2X-S2Y, the upper disc is mounted thereon. With reference to these drawings, a rotating element has 910 an upper disc 910A and a lower disc 910B which are integrally combined with each other. The top of the top disc 910A works as a tactile surface (reading surface), as indicated by the letters TS (tactile sur face) in 4 indicated. An elastic element 900 is in one on the lower disk 910B attached groove used.

In the case of this another stylus holding mechanism, as well as in the case of the stylus holding mechanism described above, each stylus will be used 601 on its one side by the elastic element 900 (which for example consists of a rubber rod with a circular cross-section) pressed, as indicated by the arrows in 4 and thereby can move in the direction of up and down movement of each pin 601 be held in a desired position. More specifically, each elastic element (each elastic rod) extends 900 in the direction of the columns and so is between a pair of adjacent columns 601 inserted that pins 601 in the one column of the column pair from the one side of the elastic element 900 pressed and held while the pins 601 in the other column from the opposite side of the elastic element 900 pressed and held. The pencils 601 and the elastic elements 900 are arranged so that the rotating element 910 by means of the elastic elements carries the pins to be moved up and down and that the longitudinal direction of each elastic element 900 perpendicular to the longitudinal direction of each pin 601 is. It is preferred that the rubber stick for the elastic member is made of nitrile rubber and has an outer diameter of 1.5 mm and a hardness of 70 IRHD (International Rubber Hardness Degree: International Rubber Hardness). Further, it is preferable that the elastic compression of the rubber rod by pressing the pins is about 0.4 mm while the pin holding force is about 0.4N.

Although not shown here, it is also possible that each pin is provided with an annular groove (or grooves) as later in 20 shown (ring grooves 2 and 3 ) that it is every elastic element 900 is allowed to engage in such annular grooves), the holding force of the pin by the elastic element 900 to increase. If such annular grooves are provided, it is preferred that such annular grooves be mounted at such positions that the pin is in its first position (return position) or at a later described second position (display position) when each elastic element 900 with (such) such annular grooves) of each pin is engaged.

Still another stylus holding mechanism and another stylus holding apparatus according to the present embodiment will now be described with reference to FIG 5 and 6 described. 5 schematically shows a part of yet another rotating element as a component for a stylus display device according to the present embodiment; it is a plan view of its main part with an upper disc removed. 6 is a schematic cross-sectional view of the rotating element of 5 along the in 5 level S3X-S3Y shown, with the upper disc is attached. Referring to these drawings, has a rotating element 920 an upper disc 920A and a lower disc 920B , in the Tegral combined. The top of the top disc 920A works as a tactile surface (reading surface) as indicated by the letters TS (tactile surface) in 6 indicated. Elastic elements 930 are in recessed sections on the lower disc 920B appropriate.

In the case of this stylus holding mechanism as well as in the case of the above-described stylus holding mechanism, each stylus will be used 601 on its one side by the elastic element 930 (which for example consists of a rubber rod with a circular cross-section) pressed, as indicated by the arrows in 6 and thereby can move in the direction of up and down movement of each pin 601 be held in a desired position. More concrete is a rod-shaped elastic element 930 on each line of each cell between two pins 601 inserted (a total of three rod-shaped elastic elements for each cell) to elastically press and hold the two pins in the direction of up and down movement of each pin at a random position. It is assumed that the shape of the cross section and the material of each rod-shaped elastic member are the same as those of each rod-shaped elastic member as shown in FIG 3 is used.

The longitudinal direction every rod-shaped Elastic element is here parallel to the longitudinal direction of each rod. Corresponding can the pin holding force of each rod-shaped elastic member easy by adjusting the length every rod-shaped elastic element to be adjusted.

It but it is also possible that the longitudinal direction every rod-shaped elastic element is perpendicular to the each pin, as in the case described above, and that in each case a rod-shaped elastic Element between each pair of two adjacent pins in each Column of each cell is used (a total of four rod-shaped elastic elements for every Cell) by making appropriate recessed sections for the rod-shaped elastic Elements are provided.

Although not shown here, it is also possible that each pin is provided with an annular groove (or grooves) as later in 20 shown (ring grooves 2 and 3 ) that it is every elastic element 930 is allowed to engage in such annular grooves), the holding force of the pin by the elastic element 930 to increase. If such annular grooves are provided, it is preferred that such annular grooves be mounted at such positions that the pin is in its first position (return position) or at a later described second position (display position) when each elastic element 930 with such an annular groove (s) of each pin is engaged.

Still another stylus holding mechanism and a stylus holding apparatus according to the present embodiment will now be described with reference to FIG 7 and 8th which schematically show an example of a two-dimensional stylus pen display device having a flat plate member where pins of each cell are arranged in a multi-row multi-column matrix. In 7 and 8th Concretely, two cells are shown, each cell consisting of eight pins in a 4 row 2 column matrix. This mechanism is suitable, for example, for a later-described display device using a belt conveyor, a chain conveyor or a pallet conveyor.

Of the According to the present description, the term "two-dimensional Display "and the Concept of a "three-dimensional Display "already described above. More concrete here is the concept of a "two-dimensional Display "in the Meaning uses each pen in the display state either a certain height or no height above that touch surface may have (i.e., either a value of 1 or a value of 0, as a binary code ), Respectively. On the other hand, the term "three-dimensional display" becomes meaningful used each pen in the display state an arbitrary height above the touch surface can have (namely any value between 1 and 0).

7 shows a part of the flat plate member as a component for a stylus display device according to the present embodiment; It is a plan view of its main part, wherein an upper flat plate has been removed. 8th is a schematic cross-sectional view of the flat plate member of 7 in the in 7 shown level S4X-S4Y, wherein the upper flat plate is mounted. Referring to these drawings, has a flat plate member 920 an upper flat plate 940A and a lower flat plate 940B which are integrally combined with each other. The top of the top flat plate 940A works as a tactile surface (reading surface) as indicated by the letters TS (tactile surface) in 8th displayed. Spiral springs 950 are used as elastic elements in recessed sections that rest on the lower flat plate 940B are attached.

In the case of this stylus holding mechanism, as well as the stylus holding mechanisms described above, each stylus will be used 601 on one of its sides by the helical compression spring 950 pressed and can therefore in the direction of the up and down movement of each pen 601 be held in a desired position. The pins become more concrete with the help of the spiral pressure from the flat plate element 940 worn so that they can be moved up and down.

In each pair of two cells, in the case of the 7 is composed of the eight - cell left cell and the eight cell right cell, each helical compression spring between a pin in the second column of each row in the first cell (ie, the left cell in FIG 7 ) and a pen in the first column of each row in the second cell (ie the right cell in 7 ) arranged. As shown there, the longitudinal direction of each pin is perpendicular to the longitudinal direction (the central axis) of each helical compression spring. With this stylus holding mechanism or device, two pins can be held by a single coil compression spring.

each Spiral compression spring, for example, has an effective coil diameter of 1.0 mm, a wire diameter of 0.2 mm, a compression of 4 mm and an effective number of turns of eight. The pin holding force is for example, 0.3 N.

Although not shown here, it is also possible that each pin is provided with an annular groove (or grooves) as later in 20 shown (ring grooves 2 and 3 ) that there is every coil spring 950 is allowed to engage in such annular groove (s) to the holding force of the pin by the coil spring 950 to increase. When such annular groove (s) are provided, it is preferred that such annular groove (s) be mounted at such positions that the pin is in its first position (return position) or at a later described second position (display position) when each coil spring 950 with such an annular groove (s) of each pin is engaged.

Further examples of stylus holding mechanisms, each as a component of a stylus display apparatus according to the present embodiment, will now be described with reference to FIG 13 to 17 described.

13 to 15 schematically show an example of a stylus holding mechanism or device according to the present embodiment. 13 Figure 3 is a schematic cross-sectional view of a major part of the mechanism with the pin engaged with a lower disc. 14 FIG. 12 is a schematic cross-sectional view of the same mechanism in which a process of releasing the engagement of the pin with the lower disc, as in FIG 13 shown, can be seen. 15 Fig. 12 is a schematic cross-sectional view of the same mechanism showing a state when the engagement of the pin with the lower disc has been released.

On 13 Referring to, a pen becomes 601 on one side by an O-ring 370A Pressed on a recessed portion of an upper disc 410A is annularly mounted, and is by engaging a step portion 610 of the pen 601 with an engaging section (one step) 420 the lower disc 420B kept there. Accordingly, even if the (visually impaired) user touches the pen with excessive force, the pen is not lowered and retracted into the tactile surface.

When the disc is turned clockwise, a lower end comes 620 of the pen 601 with an engagement releasing cam (an engagement releasing member) 700 in touch, as in 14 shown having a stepped inclined surface and upwardly from a roller described below 430 is arranged. The pencil 601 then begins against the pressing force of the O-ring 370A to tilt, causing the intervention of the step section 610 with the engaging portion 420 finally solved. If the pen 601 then through a roller 430 (Pen height feedback element) is pushed down, the pen moves 601 down and retracts into the touch surface (the location of the top of the pen 601 is lowered substantially to the level of the tactile surface), as in 15 shown.

in the Basically for one row of pins each an engagement cam releasing the engagement (disengaging the intervention Element) used. Therefore, the pin retaining mechanism basically has the Intervention solving Elements in a number corresponding to the number of lines of Pins arranged as a multi-row multi-column matrix.

The engaging section 420 can easily be formed by merely the position of a through hole 450 that in the upper disc 410A is mounted slightly in the radial direction of the disc (the rotating member) against that of a through hole 460 is offset in the lower disc 410B attached, such as in 13 shown. Furthermore, the lateral pressure passing through the O-ring 370A on the pen 601 is exercised, reduced by the position of a wall surface 480 of the recessed portion to the center of the upper disc 410A is shifted, with the O-ring 370A keep in touch with the pen 601 is held.

In addition, the vertical position of the O-ring 370A to fix a section 490 the lower disc 410B at the periphery of the through hole 460 , the engaging section 420 over the through hole 460 is opposite, from the level of the top of the lower disc 410B be raised to with the O-ring 370A to come into contact, although the raised state is not shown in the drawings.

With The stylus holding mechanism or device described above becomes allows the pin securely on a predetermined, lifted off the touch surface vertical position and a user exerted, excessive contact pressure to resist.

16 and 17 schematically show another stylus holding mechanism and another stylus holding device to a pen 6200 to hold, which also has a step portion, so a stepped pin, with an O-ring is placed on a lower disc of the rotating element. The basic concept, as shown in these drawings, is the same as in 13 to 15 , In this case, however, is a pin engaging portion 4200 in a middle position (middle depth) of a lower disc 4100B provided and not at an interface between the lower disc 4100B and an upper disc 4100A , Accordingly, in contrast to the case of 13 to 15 the pin engaging portion constant even if a position discrepancy between the upper disc 4100A and the lower disc 4100B should exist. Although not shown, it is also possible that the stepped pen 6200 has a larger diameter at a location slightly below the bottom of the lower disc 4100B is located (for example, another step portion of the stepped pin to engage with the underside of the lower disc). This can prevent the stepped pin 6200 at a height above the touch surface on the upper disk 4100A is raised, which is greater than a desired height, by the contact between the section of larger diameter (the further step portion) of the pin and the bottom of the lower disc.

The others, in 16 and 17 with reference numbers 4300 . 3700A . 6100 . 4600 . 7000 and 4900 labeled elements are similar to those in 13 to 15 with the reference numbers 430 . 370A . 610 . 460 . 700 and 490 designated elements.

It should be noted that combinations of the rotating elements with the stylus retaining mechanisms or devices and other elements as described in the above 1 to 17 have been shown in the present embodiment, obviously exemplify examples of the stylus holding apparatuses according to the first or second aspect of the present invention described above.

EMBODIMENT NO. 2

A stylus display device (Braille display device) of the present embodiment will be described below with reference to FIG 18 . 19 . 20 and 21 described.

18 Fig. 12 is a schematic plan view showing the concept of a main part of a stylus display device 100 shows while 19 a schematic side view of a part of the device of 18 according to the present embodiment. 20 is a schematic cross-sectional view of an enlarged part A of 18 , while 21 a schematic cross-sectional view of a portion of 18 in the plane SX-SY is.

Referring to these drawings, the stylus indicator includes 100 according to the present embodiment, seven main components. A first major component comprises a rotating element 10 with a cylindrical surface (the outside being a sensing surface TS) to which are attached a plurality of perforations whose positions correspond to the stylus for the display. A second main component comprises a rotary drive member (not shown) having a motor and gear for rotating the rotating member 10 , A third major ingredient includes pens 1 each of which is disposed in each of the holes so as to be movable between a first position (the pin return position) and a second position (the pin display position) of each pin. A fourth main component comprises elastic (resilient) holding elements 4 to every pin 1 to hold either in the first position or in the second position.

A fifth main component comprises a rotatable roller 30 to raise the pins to the first position (return position or return height) or leave them at the first position. Therefore, the roller can 30 be referred to as a pen height return member (pen position return member). A sixth main component comprises three electromagnetic coils as examples of actuators 20 in the direction of rotation of the rotating element 10 down from the roller 30 are arranged and the pins 1 Lower to the second position when the rotating element 10 is turned to the pins 1 to the position of the coils 20 to bring and activate the coils. A seventh major component comprises a selective actuator for selectively activating the coils around the pins 1 to lower selectively to the second position, which is the operating position of each pin, while the first position is the rest position of each pin.

When the rotating member 10 is rotated by the rotary actuator, the pins 1 with the roller 30 brought into contact with the Pins through the roller 30 be raised to the first position or remain there. When the rotating element 10 through the rotary actuator to the position of the coils 20 The pins are turned 1 selectively lowered by the coils to the second position.

In the above description, the first position is the one to which the pins pass over the tactile surface TS (the upper side) of the cylindrical rotating member 10 be raised. On the other hand, the second position is that in which the pins to the sensing surface TS of the rotating element 10 are lowered.

The pencils 1 are basically designed to be similar, for example, in terms of material and shape such as diameter and length. It is preferred that every pen 1 has a diameter of about 1.2 mm and a length of about 14 mm and a roughly hemispherical shape at each of its ends. An example of a stylus holding mechanism is shown in FIG 20 shown. Two V-shaped ring grooves 2 and 3 are in the longitudinal direction of the pins in two positions of each pin 1 appropriate. For each pair of adjacent pins 1 is an elastic (resilient) holding member 4 available, the engaging portions (V-shaped sections 5 ) has, with the V-shaped annular grooves 2 and 3 engage the pins 1 to keep.

The elastic retaining element 4 For example, a stainless steel leaf spring bent in a U-shape at a central position and further V-shaped at each of its ends into a V-shaped section 5 is bent. In other words, the V-shaped section 5 the leaf spring 4 an engaging portion of the leaf spring 4 (elastic boom). Next is the leaf spring 4 designed so that it has a blade thickness of about 0.06 mm, a blade width of about 2 mm and a spring deflection of about 0.7 mm. By the V-shaped section 5 (The engaging portion) of the elastic holding member 4 (of the elastic arm) with the annular grooves 2 and 3 elastically (resiliently) engaged, the pins can 1 with a desired holding force such as about 0.3 N in the first position or in the second position.

How out 20 can be seen, is the elastic retaining element 4 (The leaf spring) further designed with respect to its shape and the manner of its attachment to the inner cylindrical member so that its pin holding force against movement of the pin towards the second position (ie against the pressure of a finger on the pin) greater than its pin holding force is against movement of the pin in the opposite direction.

It should be noted that, though 20 an example shows where two V-shaped annular grooves 2 and 3 in two places of each pen 1 are mounted in the longitudinal direction of the pin, the number of V-shaped annular grooves depending on the requirements of the stylus display function can be changed (for example, by this number is reduced to only one V-shaped annular groove).

18 schematically shows a concept for an organ to the pins 1 to raise to the first position. A rotatable roller 30 that of a wave 31 is carried within the cylindrical element 10 at a location at a given distance from the cylindrical element 10 appropriate. The wave 31 is attached to a housing or socket (not shown). When the rotating element 10 is rotated in the counterclockwise direction, as indicated by the arrow R, columns of three pins in the cells (braille cells) on the rotating element 10 sequentially with the roller 30 brought into contact. As a result, each pin is moved either to the first position (height) of about 0.7 mm above the outside (tactile surface TS) of the rotating element 10 raised or left there.

When the roller 30 with every pen 1 which is in the second position, in which the V-shaped section 5 the elastic retaining element 4 engaged with the V-shaped groove 3 is in contact, then raises the roller 30 the pin against the elastic engagement force of the V-shaped portion 5 the elastic retaining element 4 in the V-shaped groove 3 , whereby the intervention is solved. This will make the V-shaped section 5 the elastic retaining element 4 for engagement with the V-shaped groove 2 brought, causing the pen 1 brought to the first position and held there.

It must be noted that it is sufficient, the roller 30 at only one position in the rotation of the rotating element 10 to install. Furthermore, the roller can 30 be replaced by a cam (not shown) which is fixed to the position and has a uniform inclination. Such a cam may also be referred to as a pin height feedback member (pin position feedback member).

21 schematically shows a concept for an organ for lowering the pins 1 in the second position. Actuators are three electromagnetic coils 20A . 20B and 20C arranged on three pins aligned in each column of each cell (Braille). 21 shows the case where the middle of the three pins has been selected for the operation and against the elastic engagement force between the V-shaped portion 5 the elastic retaining element 4 and the V-shaped ring groove 2 of the pen 1 through the central lowering member 21B (of the three lowering members 21A . 21B and 21C in the coils 20A . 20B and 20C ) is pressed down to the touch surface TS (second position). It may be needless to mention that the lowered pin 1 being held where the V-shaped section 5 the elastic retaining member 4 back into the V-shaped ring groove 3 engages the pin.

The three coils 20A . 20B and 20C are outside the rotating element 10 and are on a housing or socket (not shown) at a predetermined distance from the rotating element 10 attached. It should be noted that it suffices, the three coils 20 at only one position in the direction of rotation of the rotating element 10 to install. It is also possible to use the pens 1 For example, by each a cam and lever (not shown), which are driven by a respective coil to lower the touch surface (second position), rather than directly through the coils 20 lower there.

Also in the present embodiment No. 2, the coils 20A . 20B and 20C in the direction of rotation of the rotating element 10 spaced from each other at three different locations so that they are in the in 10 shown are activated sequentially at different times. In addition, optionally, a stop (not shown) at the lower end of each pin 1 be provided to the pin 1 to be prevented from being lowered deeper than desired by the spool.

The rotating element 10 For example, it is made of polystyrene resin (PS) and has an inner cylindrical member 10B and an outer cylindrical element 10A which are integrally joined together. The outer cylindrical element 10A has an outer or upper-side plane TP (topside plane), which in the cross-sectional view of 20 is a bow and acts as a touch surface TS. Similarly, the lower side plane BP (bottom side plane) of the outer cylindrical element 10A and the upper-side plane TP and lower-side plane BP of the inner cylindrical member 10B in the cross-sectional view of 20 each bows. The two cylindrical elements can be formed by molding into a substantially cylindrical shape. The elastic retaining element 4 is with a screw 6 on the inner cylindrical element 10B attached.

Every pin 1 is through the cylindrical elements 10A and 10B and the elastic holding member held so that it can slide through these cylindrical elements. To the sliding movement of each pin 1 To smooth and stabilize, optionally, a sliding portion of the pins, such as the surface of the pin 1 with a fluoride-based lubricant such as a fluoride-based solid lubricant.

Assuming that the number of cells (Braille) on the outside of the rotating element 10 is 48, and that the reading speed (the scanning speed) is 200 characters (Braille) per minute is the rotating speed of the rotating element 10 about 4 rpm (revolutions per minute). When a (visually impaired) user places his / her finger on the cylindrical surface (tactile surface) and the rotating element is rotated counterclockwise, he feels as if he is moving his finger on Braille paper from left to right.

The rotary drive member for rotating the rotating member 10 Optionally, it can be constructed with a gearbox, a pulse motor and the like. An example of such a construction is a gear that is attached to a hub portion of the rotating element 10 is fixed, which is rotatable by a shaft 11 is held while a drive wheel, a pulse motor and the like are coupled to the gear. Although not shown, the combination of these elements may be at the bottom of the rotating element 10 be housed.

Furthermore, a control circuit for controlling the elements such as the actuators 20 and the driving motor for the rotary element constituting the apparatus of the present embodiment are constructed in the manner as in the embodiment No. 1, as in FIG 12 shown.

In the present embodiment, as described above, the roller 30 within the rotary cylinder element 10 housed the pins 1 to raise the first position (return position) while the coils 20 outside the rotary cylinder element 10 are housed to the pins 1 to lower to the second position. However, the positions of the roller and the spools can be reversed so that a roller is accommodated outside the rotary cylinder member to lower the pins to the first position (return position) while accommodating spools within the rotary cylinder member to lift the pins to the second position.

As described above the stylus holding mechanism and the stylus holding device and the Stylus movement mechanism or the stylus movement device in the stylus display device according to the present embodiment be very simple. Accordingly, the stylus indicator may be small, be designed easily and cheaply.

Although cantilever members are used as the elastic members in the second embodiment, it should be noted (as also mentioned below) that instead, a plurality of O-rings are annular on or in recessed grooves on a cylindrical surface of the rotating member 10 (Drum) could be arranged to the pins 1 from the one side of each pin to squeeze and the pins 1 to keep.

It It must be noted that the stylus holding mechanisms described above or devices, the for Continuous stylus (Braille) display devices used be in which disc-like rotating elements (discs) or rotating hollow cylinder (drums) are used, not on the specifically described above, but also effective for continuous Stylus (braille) display devices can be used in for example, rotating conveyor belts or rotating drums be used, each having a conical surface as a touch surface, which is designed so that characters and / or graphics are two-dimensional or displayed in three dimensions. Although not shown, can for example, rather than a plurality of O-rings annular in recessed grooves on a disc-shaped rotating element to attach to a plurality of styli up and down to move wear, a plurality of O-rings annular on or in recessed Grooves on a cylindrical surface of a rotating hollow cylinder (a drum) can be arranged to the pins of their one Side to squeeze and hold.

As described above the stylus holding mechanisms or devices according to the embodiments of the present invention Invention simultaneously hold several pins together by the Example annular e.g. on a rotating element arranged elastic elements, arranged between pins rod-shaped elastic elements or be used between pins arranged spiral compression springs.

each the stylus (Braille) display devices according to the embodiments of the present invention Invention can enable a (visually impaired) user to to touch it that way as if he's touching a Braille or Braille paper, and though, for example, by using: one of the pin retention mechanisms or devices; mounted near a rotating element, spaced apart Actuators; a mechanism to put the pins in a first Direction to the initial Return position to move or allow the pins to close at the return position remain, for example using a rotatable roller, causing all pins in the return position to be brought; and a mechanism to selectively engage the pins a second direction to move to positions different from the Return position distinguish, by actuators, if necessary be activated at different times.

Moreover will it, unlike in cases, in which only one line (one braille line) is displayed at once (touched or read) and refreshed, according to the embodiments the present invention possible for example on a rotating element like a rotating one Slice any desired Number of pens (pen cells or braille cells) continuous display (to be touched or read), i. Phrases of each desired Length.

Furthermore can the stylus indicators according to the embodiments of the present invention, including the pin movement mechanisms and the pin retaining mechanisms, are very easy to construct, and their size, weight and price can be reduced. As a result, it will be available to users (visually impaired) allows such devices convenient to use and easy to buy. Accordingly, it is possible such devices in public Facilities such as libraries and stations of public transport companies widespread use.

In addition, the Tactile pin display devices according to the embodiments of the present invention is used as Braille display terminals be used for reading internet homepages to personal computers or for mobile internet applications to mobile phones or PDAs (personal digital Assistants) are coupled. It needs no mention that they also as braille display terminals for various electronic Facilities such as ticket machines, ATMs (ATMs: automated Teller machines), vending machines, electronic book readers, fax machines, braille learning devices, electronic voting machines and navigation systems can be used.

By Apply a lubricating material to all sliding sections the pins will also make it possible also all pin holding forces and to stabilize all sliding movements of the pins.

The present invention has been described above using presently preferred embodiments, but such description should not be construed as limiting the present invention. Various modifications will be obvious, obvious, or obvious to one of ordinary skill in the art having read the description. Accordingly, the appended claims should be construed as that they cover all modifications and variations that fall within the scope of the present invention.

Claims (16)

Stylus holding device, comprising: a holding element ( 410 . 910 . 4100 . 10 ) with a tactile surface (TS) and a first number of holes, and equipped to the first number of styli ( 601 . 6200 . 1 ) in the holes so that they can be moved up and down relative to the tactile surface to display characters and / or graphics, the styli are multi-line and multi-column and arranged in a second number of groups on the touch surface; and elastic elements ( 370 . 900 . 3700 ) in the second number, the second number of groups of styli corresponding to and disposed on the support member to press and hold the styli together with the support member so that each of the styli in each of the stylus groups is urged by the elastic member corresponding thereto and thereby can be maintained at a desired height relative to the tactile surface, and that each of the styli can be moved up and down when a force exceeding a given value is applied in the up and down direction to each of the styli, characterized in that the second Number is less than the first number, each elastic element ( 370 . 900 . 3700 ) simultaneously against a plurality of styli ( 601 . 6200 . 1 ) in the corresponding elastic member ( 370 . 900 . 3700 ) and each of the styli ( 601 . 6200 . 1 ) on its one side by the corresponding elastic element ( 370 . 900 . 3700 ) is pressed. Stylus holder according to claim 1, characterized in that the second number is the number of rows of styli ( 601 . 6200 . 1 ) and that each of the elastic elements provided for each of the rows of styli is an elastic ring ( 370 . 3700 ), which is annular on the holding element ( 410 . 4100 . 10 ) is mounted to press laterally against the styli of the corresponding line. Stylus holder according to claim 1, characterized in that the second number is equal to half the number of columns of the styli ( 601 ) and that each of the elastic elements is an elastic rod ( 900 ) extending in the column direction and inserted between a pair of adjacent columns of styli, that the styli in one column of the pair of columns is pressed and held by one side of the elastic rod while the styli are in the other column be pressed and held by the opposite side of the elastic rod. Stylus holding device according to claim 1, characterized that the second number is equal to half the number of styli and each of the elastic elements is an elastic segment, so between a pair of adjacent styli in each row added is that one of the stylus of the pair of styli through one side of the elastic segment is pressed and held, while the other stylus through the opposite side of the elastic Segments pressed and held. Stylus holder according to claim 1, characterized in that each of the styli ( 601 . 6200 . 1 ) in each of the groups of styli an annular groove for engagement with the elastic element ( 370 . 900 . 3700 ) corresponding to each of the groups of styli. Stylus holding device according to claim 1, characterized in that the holding element disc-shaped ( 401 . 910 . 4100 ) or drum-shaped ( 10 ). Stylus holding device according to claim 1, characterized in that each of the elastic elements is a non-metallic annular element ( 370 . 3700 ), a non-metallic rod-shaped element ( 900 ), a non-metallic tubular member or a helical compression spring. Stylus holding device according to claim 1, characterized in that each of the holes has an engaging portion ( 420 . 4200 ) and each of the styli in each of the holes comprises a step portion ( 610 . 6100 ) which is engageable with the engagement portion of each of the holes so that when the step portion of each of the tactile pins is engaged with the engagement portion of each of the holes, each of the tactile pins is maintained at a desired height relative to the tactile surface. Stylus holding device according to claim 8, characterized in that it further engagement-releasing elements ( 700 . 7000 ), each for coupling to each of the styli ( 601 . 6200 ), the engagement between the step portion ( 610 . 6100 ) each of the styli and the engaging portion (FIG. 420 . 4200 ) to solve each of the holes. A stylus display apparatus comprising: a stylus holding device as defined in any one of the preceding claims, and wherein said holding member is a rotating member ( 410 . 910 . 4100 . 10 ); a rotary drive member coupled to the rotary member for rotating the rotary member; a pen height feedback member (FIG. 430 . 30 ) to return the height of the styli to a return height when the styli are rotated during rotation of the rotie element are brought into contact with the pen height return element; Actuators mounted near the rotating element ( 421A to 421C . 1A to 1C , G1, G2; 20 . 20A to 20C ) to move the styli; and selective drive members coupled to the actuators for selectively driving the actuators to selectively move the feeler pins and bring them to desired heights relative to the tactile surface. A stylus indicator according to claim 10, characterized characterized in that the number of actuators is equal to the number the rows of styli and the actuators are from each other spaced apart. A stylus indicator according to claim 10, characterized characterized in that the number of actuators is equal to the number the rows of styli and the actuators to each other be activated at different times. A stylus indicator according to claim 10, characterized characterized in that it further comprises an organ for detecting an abnormal Strain involves an abnormal load applied to the rotating element to recognize. A stylus display apparatus according to claim 10, characterized by further comprising a marked portion (Fig. 840 ) to which a user places his finger to feel the styli. A stylus indicator according to claim 10 when dependent on any one of claims 1 to 7, characterized in that each of the holes has an engaging portion (Fig. 420 . 4200 ) and each of the styli in each of the holes comprises a step portion ( 610 . 6100 ) which is engageable with the engagement portion of each of the holes so that when the step portion of each of the tactile pins is engaged with the engagement portion of each of the holes, each of the tactile pins is maintained at a desired height relative to the tactile surface, and thereby in that the stylus indicator further comprises disengaging elements ( 700 . 7000 each of which, during the rotation of the rotating member, with each of the styli ( 601 . 6200 ) is brought into contact in each of the holes to disengage the engagement between the step portion of each of the tactile pins and the engagement portion of each of the holes, the engagement releasing members being mounted in the rotational direction of the rotary member upward of the pin height feedback member. A stylus indicator according to claim 15, characterized characterized in that the number of engagement-releasing members is equal to the number of rows of styli.