JPS605394Y2 - X-Y direction input device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an X-Y direction input device, and is suitable for, for example, a figure input device of a graphic display device.
This relates to a Y-direction input device.

A graphic display device basically consists of a display screen, a display controller, data channels, and various input devices.

One of these devices is that when an operator tilts a lever supported by a gimbal mechanism in a desired direction, the direction and angle of tilt are detected and the voltage or digital signal of each component in the X-axis direction and Y-axis direction is detected. There is a registered trademark that generates .

However, with this input device, the rotation range of the lever is limited and there are also problems with the stability of the input signal.

In order to overcome this drawback, an input device called a so-called one-mouse input device has been developed in recent years.

This input device includes a rotated sphere (hereinafter abbreviated as sphere) made of a rotatably arranged steel ball, a first driven roller that is in contact with the sphere and rotates by the rotational force of the sphere, and a sphere. a second driven roller that is in contact with and rotates by the rotational force of the sphere and whose axial direction is substantially orthogonal to the axial direction of the first driven roller, and the amount of rotation of the first and second driven rollers is individually determined. First and second rotation amount detection means consisting of a variable resistor, encoder, etc. to be detected; a casing that houses these spheres, first and second driven rollers, first and second rotation amount detection means, etc.; It basically consists of.

An opening is provided in the lower surface of the casing, and a part of the sphere protrudes downward through the opening, and by holding the casing and rotating the sphere in any direction on a predetermined base, the first and second The driven rollers rotate in predetermined directions.

The rotation direction and amount of rotation of these driven rollers are
The rotation amount detection means extracts each component in the X-axis direction and Y-axis direction as a voltage or digital signal, and these signals are input to the display device.

The present invention is directed to this type of input device.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall perspective view of a graphic display device including an X-Y direction input device according to an embodiment.

On the table 1 there is placed a display device 2 with a screen, a controller and data channels, an input device 3 with function keys, and an input device 4 according to an embodiment of the invention.

The input device 4 is operated on a dedicated sheet 5 placed on the table 1, and by this operation, for example, a cursor 7 displayed on the screen 6 of the display device 2 can be moved to an arbitrary position. It has become.

Next, the structure and operating principle of this input device 4 will be explained.

2 is a plan view of the input device 4, FIG. 3 is a front view of the input device 4, FIG. 4 is a bottom view of the input device 4, and FIG. 5 is a side view of the input device 4.

The casing 8 consists of a lower case 9 and an upper case 10 made of, for example, ABS resin.In order to prevent dust, water, etc. from entering the casing 8 from the joint between the lower case 9 and the upper case 10, the lower case 9 is made of ABS resin. The entire periphery of the joint between the case 9 and the upper case 10 is stepped.

The upper case 10 is designed to have a size that the operator can hold and operate with one hand, and the upper case 1 is located at a predetermined position on the upper wall portion 11.
A fitting hole 12 is formed along the longitudinal direction of 0.

This insertion hole 12 has a rectangular switch lever 13.
The operating end 14 of is inserted from inside the upper case 10 and slightly protrudes from the earthen wall portion 11.

As will be described later, a corresponding button switch is arranged below the switch lever 13, and in addition to the switches of the input device 4 itself, these switches are used to control the display immediately above or below the cursor 7 on the display device 2, for example. It is used for various signal processing such as deleting a part of a pattern, moving it to another display position, and other switching and control.

The display device 2 and the input device 4 are connected by a cord 15 and a plug 16.

FIG. 6 is a plan view of the lower case 9.

On the outer periphery of the bottom wall 17 of the lower case 9, a front wall 18, a rear wall 19, a right wall 20, and a left wall 21 are continuously provided upright.

In the bottom wall 17, there are holes near the corner between the front wall 18 and the right side wall 20, near the corner between the front wall 18 and the left side wall 21, and near the center of the rear wall 19. Holes 22a, 22b, and 22c are formed therethrough.

By connecting the center points of these three small holes 22a to 22c, the small holes 22 are connected so that an isosceles triangle is formed.
The drilling positions of a to 22c have been determined.

FIG. 7 is a sectional view taken along the line CC in FIG. 6.

An annular tapered surface 23 whose diameter gradually increases upward is formed above the small hole 22, and an annular flat portion 24 is left on the outer periphery of the upper opening edge of the tapered surface 23. The portion 25 is integrally formed.

Slightly behind the small holes 22a, 22b, three pillars 26 are erected in a row from the bottom wall portion 17 at predetermined intervals, and these pillars 26 are useful for supporting and attaching a printed circuit board, which will be described later.

Immediately in front of the small hole 22c, there is formed an opening 27 for entering and exiting a sphere, which is approximately circular in diameter and has a larger diameter than a sphere to be described later.

Figure 8 is a sectional view taken along the line C-C in Figure 6, and Figure 9 is a cross-sectional view along line C-C in Figure 6.
It is a sectional view taken along line -C.

As shown in FIGS. 6 and 9, an upwardly facing stepped portion 28 having a predetermined width and having an upwardly facing planar locking portion is provided at one location on the circumferential edge of the opening 27, and the opening excluding the stepped portion 28 has an upwardly facing planar locking portion. Part 27
A downward step portion 2 having a downward planar locking portion at the peripheral end of the
9 is provided.

At a position opposite to the upward step 28, a recess 43 extending radially outward is connected to the downward step 29, and above the recess 43 is a hexagonal hole 31 into which a small nut is inserted through a screw insertion hole 30.
is formed.

The peripheral edge of the opening 27, the upward step 28 and the hexagonal hole 31
A continuous peripheral wall 32 is provided to protrude so as to surround the outer periphery.

On the side of the peripheral wall 32 facing the front wall 18, arcuate projections 34a and 34b having an arcuate receiving surface 33 on the upper surface are integrally formed with the peripheral wall 32 at a predetermined interval.

FIG. 11 is a sectional view taken along line E-E in FIG. 6, and as shown in the same figure, the arcuate protrusion 34a.

A reinforcing rib 35 is provided at the base of 34b so as to be orthogonal thereto.
are each provided integrally.

The curvature of the receiving surface 33 on the arcuate projection 34a is designed to be slightly smaller than that on the arcuate projection 34b.

As shown in FIG. 6, arcuate protrusions 36a and 36b are integrally formed with the peripheral wall 32 at a predetermined interval in front and behind the upward step 28.

These arcuate protrusions 36a and 36b also have the arcuate protrusions 34a+3
4b, it has an arcuate receiving surface 37 on the upper surface, and a reinforcing rib 38 is integrally formed at the base, and the curvature of the receiving surface 37 on the arcuate protrusion 36a is the same as that on the receiving surface 37 on the arcuate protrusion 36b.
It is designed to be slightly smaller than that of .

FIG. 12 is a sectional view taken along the line F-F in FIG. 6, and as shown in the same figure and FIG. Two linear protrusions 39, 39 extend in parallel at a predetermined interval, and their tips are integrated with the peripheral wall 32.

Two screw insertion holes 40 formed near the front wall 1B
, 40 and one screw insertion hole 40 formed near the rear wall portion 19 is a hole for connecting the lower case 9 and the upper case 10 with a screw.

Two screw holes 41 shown in FIG. 6 are for attaching a later-described annular holder to the upper surface of the lower case 9.

13 to 16 are views of the ring-shaped lid 42 attached to the lower surface of the lower case 9. FIG.

The outer diameter of the ring-shaped lid 42 is designed to be approximately the same size as the inner diameter of the downward step 29 in the lower case 9, and a tongue piece 44 that is placed on the upward step 28 is protruded from one place on the outer periphery. ing.

Further, on the opposite side of the tongue portion 44, a mounting portion 45 that fits into the recess 43 is provided in a protruding manner, and a screw insertion hole 46 is formed in the mounting portion 45.

A circular opening 47 having a diameter considerably smaller than the diameter of the sphere is bored in the center of the ring-shaped lid 42, and an annular tapered surface 48 whose diameter gradually increases upward is formed at the top of the opening 47. has been done.

When attaching this ring-shaped lid 42 to the lower case 9, first insert the tongue portion 44 into the opening 27 from the bottom side of the lower case 9, and place the tongue portion 44 on the upward step portion 28. do.

Then, fit the entire ring-shaped lid 42 into the downward step 29, insert a small nut 49 (see Fig. 17) into the hexagonal hole 31 of the lower case 9, and screw 50 (see Fig. 4) from the ring-shaped M42 side. Insert the screw.

By doing so, the ring-shaped lid 42 is fixed to the lower case 9 by both the engagement of the upward step part 28 and the tongue part 44 and the screw fastening with the screw 50, and the opening 27 of the lower case 9 is fixed to the lower case 9. It is covered with a ring-shaped lid 42.

This state is shown in FIG.

18 and 19 show the support ball 50 and the support leg 5.
FIG. 18 is a sectional view of main parts showing the arrangement state of the support ball 50 and the support legs 51 in the small hole 22at of the lower case 9.
22b, and FIG. 19 shows a structure in which the support ball 50 and the support leg 51 are arranged above the small hole 22c of the lower case 9.

First, FIG. 18 will be explained.

Small holes 22a, 22 are formed on the tapered surface 23 of the lower case 9.
A steel support ball 50 having a diameter larger than that of the ball 50 is mounted, and a portion of the support ball 50 protrudes downward from the small holes 22a and 22b.

A support leg 51 made of polyacetal resin is erected above the support ball 50.

A bowl-shaped portion 52 that rotatably accommodates the support ball 50 is provided at the lower part of the support leg 51, and the outer diameter of the bowl-shaped portion 52 is equal to or slightly larger than the inner diameter of the cylindrical portion 25 protruding from the lower case 9. Largely designed.

A pillar part 53 is connected to the upper part of the bowl-shaped part 52, and by providing a small diameter part 54 at the upper end of the pillar part 53, a stepped locking part 55 is formed at the base of the small diameter part 54.

The small diameter portion 54 is inserted into a locking hole drilled in the printed circuit board 56, and the printed circuit board 56 is supported by the support legs 51. This will prevent it from falling.

When assembling, the support ball 50, the support legs 51, and the printed circuit board 56 are placed on the lower case 9 in this order, but if each of them falls down when the support legs 51 are erected, the printed circuit board 56 will be damaged. This will interfere with the installation.

For this purpose, a cylindrical portion 25 is provided in the vicinity of the small hole 22 of the lower case 9, which contacts the bowl-shaped portion 52 of the support leg 51 and helps prevent the support leg 51 from falling during assembly. There is.

As shown in the figure, a support ball 50 is provided on the inner surface of the bowl-shaped portion 52.
are arranged so that they can rotate freely.

Further, upward movement of the support ball 50 is restricted by the support legs 51 (bowl-shaped portions 52), so that a portion of the support ball 50 always protrudes from the lower surface of the lower case 9 by a predetermined distance. There is.

In the case of FIG. 19, the support structure of the support leg body 51 is different from the case described above.

That is, the vertical through hole 5 formed in the annular holding body 57
The column portion 53 of the support leg 51 is inserted through the annular support 8 , and the support leg 51 is held down by the annular holder 57 .

The shapes of the support ball 50 and the support legs 51 are the same as those described above, so their description will be omitted.

20 is a plan view of the annular holder 57, FIG. 21 is a bottom view of the annular holder 57, and FIG. 22 is a front view of the annular holder 57.

The annular holder 57 is made of, for example, polybutylene terephthalate, and has a penetrating portion 60 in the center that is larger than the diameter of the sphere 59.

As shown in FIGS. 20 and 21, the annular holder 5
Reference numeral 7 denotes a first driven roller holding section 61 that holds and positions one driven roller, which will be described later, a second driven roller holding section 62 that holds and positions the other driven roller, and a friction force applying roller that holds and positions the roller. It mainly consists of a applying roller holding section 63.

The first driven roller holding part 61 and the second driven roller holding part 62 are arranged so that the longitudinal direction of the first driven roller holding part 61 and the longitudinal direction of the second driven roller holding part 62 are orthogonal to each other, A applying roller holding section 63 is provided facing these.

The first driven roller holding portion 61, the second driven roller holding portion 62, and the applying roller holding portion 63 are integrally formed into an annular shape via a connecting portion 64.

Before explaining the shapes of the driven roller holding parts 61 and 62, the driven roller encoder block 6 that is fitted and held therein will be described.
The structure of No. 5 will be explained.

26 to 29 are diagrams showing the driven roller encoder block 65. FIG. 26 is a plan view, FIG. 27 is a front view, FIG. 28 is a right side view, and FIG. 29 is an enlarged sectional view of main parts. be.

The driven roller encoder block 65 is connected to the driven roller 6
6 and an encoder 67, both of which are integrally connected and handled as one block when assembled into the annular holder 57.

The driven roller 66 includes a rotating shaft portion 68 and a rotating shaft portion 68 thereof.
A roller portion 6 is formed integrally with the roller portion 6 at approximately the center of the
9 and bearings 7 disposed on both sides of the rotating shaft portion 68, respectively.
It consists of 0a and 70b.

The encoder 67 is connected to the encoder case 71 and one end of the rotating shaft portion 68 of the driven roller 66 .
a slider receiver 72 that rotates integrally with the slider receiver 72; a slider 73 attached to the slider receiver 72; and the encoder case 71.
It is composed of a pattern board 74 that is positioned and faces the slider 73, and a mounting plate 75 that firmly fixes the pattern board 74 to the encoder case 71.

30 to 32 are views showing the encoder case 71, with FIG. 30 being a front view, FIG. 31 being a left side view, and FIG. 32 being a right side view.

As shown in FIG. 32, the encoder case 71 has a front wall 76, a rear wall 77, an upper wall 78, and a lower wall 79.
and a left side wall 80, and the right side is almost entirely open.

On the front wall part 76 and the back wall part 77, in the lower part,
Two locking grooves 82 into which bent pieces 81 (see FIG. 27) of the mounting plate 75 are fitted are formed horizontally.

Note that this locking groove 82 partially extends to the left side wall portion 80, as shown in FIG.

A locking claw 83 extending toward the right side surface is provided between the upper and lower locking grooves 82, and the locking claw 83 of the front wall portion 76
and the locking claw 83 of the rear wall portion 77 are in an opposing state.

A cylindrical portion 84 extending toward the driven roller 66 is integrally formed in the center of the left side wall portion 80 .
Direction regulating protrusions 85 extending in the horizontal direction are provided at the front and rear near the opening end.

As shown in FIG. 32, the front wall 76, the back wall 77,
A non-circular annular stepped portion 86 having the same outer shape as the pattern substrate 74 is formed at the right end portions of the upper wall portion 78 and the lower wall portion 79 .

Furthermore, a housing recess 107 is further stepped from this annular step 86.
is provided.

As shown in FIG. 29, a small diameter portion 87 is provided at one end of the rotating shaft portion 68, thereby forming a stepped locking portion 88 at the base of the small diameter portion 87.

The small diameter portion 87 passes through the inner ring 89 of the bearing 70b made of a ball bearing, and the outer ring 91 of the bearing 70b, which is tightly fitted into the center hole 90 of the slider receiver 72, is inserted into the cylindrical portion 84 of the encoder case 71. They are tightly fitted and in a fixed state.

The small diameter portion 8 of the rotating shaft portion 68 is inserted into the center hole 90 of the slider receiver 72.
When the stepped locking portion 88 comes into contact with the end surface of the inner ring 89, the inner ring 89 ends up being held between the slider receiver 72 and the stepped locking portion 89. becomes, bearing 70
b (inner ring 89) is prevented from moving in the axial direction by the encoder case 71, so there is no deviation of the driven roller 66 in the axial direction.

FIG. 33 is an exploded perspective view of the slider receiver 72 and slider 73;
FIG. 34 is a right side view of a slider assembly with one slider receiver.

The slider receiver 72 is made of polybutylene terephthalate or the like, and has a central hole 90 formed therein.

A mounting base portion 92 is provided on the right side surface, and two positioning pins 93 are protruded from the mounting base portion 92 at a predetermined interval.

A C-shaped protrusion 95 having a notch 94 in a portion is formed near the right opening end of the central hole 90 .

A portion of the right side surface that is not the mounting base portion 92 is stepped down to form a substantially fan-shaped recess 96.

At the center of the slider 73 is a C-shaped protrusion 9 of the slider receiver 72.
5 is provided with a substantially annular portion 97 that fits externally, and a first contact end 98 is cut and raised toward the center of the annular portion 97.

Attachment holes 99 are formed at positions facing the positioning pins 93 of the slider receiver 72, and an arm portion 100 is integrally formed at a position facing the recess 96 of the slider receiver 72. An inner second contact end 101 and an outer second contact end 102 are attached to the distal end thereof so as to protrude in parallel.

By inserting the positioning pin 93 of the slider receiver 72 into the mounting hole 99 of the slider 73 and the C-shaped protrusion 95 into the substantially annular portion 97, the slider 73 is attached to the slider receiver 72.
positioning is performed.

Further, by thermally melting the head of the positioning pin 93, the slider 73 is firmly fixed to the slider receiver 72 without rattling.

Due to this fixation, the vicinity of the free end of the first contact end 98 of the slider 73 faces the notch 94 and the central hole 90, while
The arm portion 100, the inner second contact end 101, and the outer second contact end 102 face the recess 96.

Therefore, elastic deformation of the first contact end 98, the arm portion 100, the inner second contact end 101, and the outer second contact end 102 is performed without any problem.

FIG. 35 is a plan view of the patterned substrate 74.

This pattern board 74 includes a central pattern section 103,
It has an inner peripheral pattern part 104 and an outer peripheral pattern part 105 which are formed concentrically with the central pattern part 103.

Each pattern section 103, 104, 105 is connected to a respective terminal section 106.

The slider receiver 72 with the slider 73 attached to one side is inserted into the accommodation recess 107 of the encoder case 71, while the bearing 70b is fitted in the small diameter part 87 of the rotating shaft part 68 in advance, and the small diameter part 87 and bearing 70b to encoder case 7.
Press fit from the cylindrical portion 84 of No. 1.

By firmly fitting the tip of the small diameter portion 87 into the central hole 90 of the slider receiver 72 and the bearing 70b into the cylindrical portion 84, the driven roller 66 is prevented from being pulled out in the axial direction. At the same time, the slider receiver 72 (slider 73) is rotatably held within the housing recess 107 of the encoder case 71, and can rotate integrally with the driven roller 66.

Next, the pattern substrate 74 is attached to each pattern portion 103.1 of the pattern substrate 74.
04 and 105 are fitted into the annular stepped portion 86 of the encoder case 71 so as to face the slider 73.

As described above, since the annular stepped portion 86 has the same non-circular shape as the outer shape of the pattern board 74, the pattern board 74 can be positioned with respect to the encoder case 71.

The insertion dimension of the pattern board 74, in other words, the amount of pushing of the pattern board 74 into the slider 73 is regulated by the height of the annular step portion 86.

When inserting the pattern board 74 into the encoder case 71, the two locking claws 8 protruding from the encoder case 71
3 is inserted while slightly expanding it, and this locking claw 83
The pattern board 74 is temporarily fixed to the encoder case 71.

If the pattern board 74 is temporarily fixed to the encoder case 71 in this way, the pattern board 74 will not be displaced or fall off during the next installation work of the mounting plate 75.
Installation work is easy.

After the pattern board 74 is temporarily fixed to the encoder case 71, a mounting plate 75 having a U-shaped planar shape is brought into contact along the outer surface of the pattern board 74, and the four bent pieces provided on the mounting plate 75 are brought into contact with each other along the outer surface of the pattern board 74. 81 are fitted into the locking grooves 82 of the front wall portion 76 and the rear wall portion 77, respectively.

The tip of each bent piece 81 is connected to a locking groove 82 provided in the left side wall 80 of the encoder case 71 as shown in FIG.
The pattern board 74 is finally firmly fixed to the encoder case 71 by bending it toward the end and fitting it.

By fixing the pattern board 74 to the encoder case 71, the first contact end 98 of the slider 73 comes into elastic contact with the central pattern section 103 of the pattern board 74, and the inner second contact end 101 contacts the inner peripheral pattern section 104. The outer second contact ends 102 come into elastic contact with the outer peripheral pattern portions 105, respectively.

By inserting and fixing the pattern board 74 into the encoder case 71, the contact ends 98, 101, and 102 are each slightly pressed and deformed and fall down, but ultimately, when the assembly is completed, the contact ends 98, 101, and 102 fall down as shown in FIG. The dimensions of each component are designed so that the contact point of one contact end 98 with the central pattern section 103 and the center point of the central pattern section 103 are arranged on the rotation axis of the driven roller 66.

The driven roller encoder block 65 having such a structure is inserted into the driven roller holding parts 61 and 62 shown in FIGS. 20 to 22, respectively.

Next, the shapes of the driven roller holding parts 61 and 62 will be explained.

A bearing fitting groove 108 (see FIGS. 21 and 23) into which the bearing 70a that is not press-fitted into the encoder case 71 is fitted is formed at one end of the driven roller holding parts 61, 62.

At a predetermined distance from this bearing fitting groove 108, a projection fitting groove 109 into which the direction regulating projections 85, 85 provided on the encoder case 71 are fitted and a cylindrical part fitting groove 110 into which the cylindrical part 84 is fitted are connected. It is set up.

゛The rotating shaft portion 68 and the roller portion 69 are inserted into the intermediate portion between the bearing fitting groove 108 and the protrusion fitting groove 109, but these should not come into contact with the driven roller holding portions 61 and 62. Concave cutouts 111, 112, and 113 for relief are formed.

A roller part 69 is inserted and arranged in the intermediate recessed part 112, and two fall-off prevention claws 114, 114 protrude inward from the peripheral wall part 115 with an interval slightly wider than the width of the roller part 69. It is set up.

(See Figure 24).

The bearing fitting groove 108, the protrusion fitting groove 109, the cylindrical part fitting groove 110, and the recessed parts 111 and 113 are open toward the lower surface as shown in FIG.

The bearing 70a of the driven roller encoder block 65 is fitted into the bearing fitting groove 108 of the driven roller holding parts 61, 62, and the rotating shaft part 68 and roller part 69 are fitted into the recessed parts 111, 112,
113, the two driven roller encoder blocks 65 are fitted into the driven roller holding parts 61 and 62, respectively, so that the direction regulating protrusion 85 is fitted into the protrusion fitting groove 109, and the cylindrical part 84 is fitted into the cylindrical part fitting groove 110. insert.

At the time of this insertion, the rotating shaft portion 68 is inserted while pressing the falling-off prevention claw 114 slightly outward, and when inserted into a predetermined position, the tip of the falling-off preventing claw 114 is slightly separated from the rotating shaft portion 68, as shown in FIG. The rollers 66 are opposed to each other so as not to impede the rotation of the driven roller 66.

In this way, the falling-off prevention claws 1 are attached to the driven roller holding parts 61 and 62.
14, the driven roller encoder block 65 can be accidentally removed from the driven roller holding portion 6 during subsequent handling.
1, 62, making it easy to handle.

As shown in FIGS. 20, 22, and 24, a lead wire hanging portion 116 for hanging a lead wire from the encoder 67 is provided at the upper part of the peripheral wall portion 115.

Next, regarding the applying roller holding portion 63, see FIGS. 21 and 2.
This will be explained mainly using FIG.

Note that FIG. 25 is a sectional view taken along line BB in FIG. 21.

The application roller holding part 63 has a case shape that opens downward, and an accommodation space 117 in which a roller support member, which will be described later, is slidably accommodated is formed inside the case.

As shown in FIG. 21, stopper walls 118 are vertically provided on both sides of the housing space 117 on the side facing the penetration part 60, and a roller protruding opening 119 is formed between the two stopper walls 118. .

As shown in FIG. 25, two drop-off prevention claws 121 are hung from the upper wall portion 120 (lower side in the figure) of the applying roller holding portion 63 so as to face each other at a predetermined interval. It is set up.

Next, the rolling contact roller 122, the support shaft 123, the roller support member 124, and the spring member 125, which are housed and held in the application roller holding section 63, will be explained with reference to FIGS. 36 to 39.

FIG. 36 is an exploded perspective view of the rolling contact roller 122, support shaft 123, roller support member 124, and spring member 125;
7, 38 and 39 are a plan view, a side view and a rear view of the roller bearing.

The rolling contact roller 122 is molded from polyacetal resin mixed with polytetrafluoroethylene resin, has an extremely low coefficient of friction, and has a spindle through hole 126 with a slightly larger diameter than the spindle 123. has been done.

Therefore, the rolling contact roller 122 can freely rotate on the support shaft 123.

The roller support member 124 is molded from polyamide resin, and semicircular bearing portions 127 that support both ends of the support shaft 123 are formed at both ends of the front surface so as to open toward the front. .

A roller accommodating recessed part 128 (see FIG. 38) extending rearward is formed between the bearing parts 127, and a partition wall 129 is provided at the rear thereof.

A circular spring receiver recess 130 is formed behind the partition wall 129 and is open toward the rear.

As shown in FIG. 39, relief recesses 131 are provided almost entirely on the upper surface, lower surface, and left and right side surfaces of the roller support member 124 except for the four corners, so that linear protrusions 131 are formed at the four corners from the front to the rear. 132 is formed.

The spring member 125 is made of a coil spring, one end of which is inserted into the recess 130 for the spring receiver of the roller support member 24, and the other end of which is inserted into the rear wall portion 133 (the second
1 and 40).

Roller 122, support shaft 123, and spring member 125
The roller support member 124 holding the roller support member 124 is pushed into the accommodation space 117 of the applying roller holding section 63.

Then, the protrusions 132 of the roller support member 124 are connected to the two falling-off prevention claws 1 protruding from the applying roller holding part 63.
21, while pushing the heads slightly outward, the protrusions 132 engage with the fall-off prevention claws 121, as shown in FIG.

Through this engagement, the rolling contact roller 122, the support shaft 123, and the roller support member 124 are temporarily fixed to the application roller holding portion 63, so that when the annular holder 57 is subsequently attached to the lower case 9, each of the above-mentioned parts is There is no chance of it falling off,
Workability can be improved.

In addition, the falling-off prevention claw 121 and the protrusion 1 that engages with it
32, the roller support member 124 is in the accommodation space 1 after engagement.
The dimensions are designed to the extent that it can slide within 17.

When the spring member 125 is inserted into the housing space 117, the spring receiver of the roller support member 124 is held in a compressed state between the recess 130 and the rear wall portion 133 of the applying roller holding portion 63, and its elasticity allows the spring receiver to support the roller support member 124. The rolling contact roller 122 and the support shaft 123 are urged toward the roller protrusion opening 119 via the member 124 .

Due to this bias, a part of the outer circumference of the rolling contact roller 122 projects inward from the roller projection opening 119, and both ends of the support shaft 123 come into contact with the inner surface of the stopper wall 118.

This contact prevents the rolling contact roller 122 and the support shaft 123 from being removed.

Note that when the sphere 59 is inserted as shown in FIG.
The rolling contact roller 122 moves back slightly against the elasticity of the spring member 125, so that the support shaft 123 is slightly separated from the stopper wall 118, and the elastic force of the spring member 125 is applied to the roller support member 124, the support shaft 123, and the rolling contact roller. 122 on the sphere 59.

As described above, one driven roller encoder block 65 is connected to the first driven roller holding section 61 and the other driven roller encoder block 65 is connected to the second driven roller holding section 62, while the rolling contact roller 122 and the support shaft 123 are connected to each other. , an annular holder 57 in which the roller support member 124 and the spring member 125 are inserted and temporarily fixed into the application roller holder 63, respectively.
is mounted on the lower case 9 with the insertion opening side of each part facing down.

At this time, as shown in FIG.
A support ball 50 and a support leg 51 are arranged in advance on the top, and a through hole 58 (
20 and 21) is inserted into the support leg 51,
In addition, two screw insertion holes 13 formed in the annular holder 57
4 (see FIGS. 20 and 21) and the annular holder 57 is arranged on the lower case 9 so that the screw holes 41 (see FIG. 6) of the lower case 9 face each other, as shown in FIG. 45. It is screwed on as shown.

By attaching the annular holder 57 to the lower case 9 in this manner, the bearing can be held between the arcuate protrusions 34b and 36b protruding from the lower case 9 and the bearing fitting groove 108, as shown in FIGS. 42 and 44. 70a is held.

Further, as shown in FIGS. 43 and 44, an arcuate projection 34ay36a protruding from the lower case and a cylindrical portion fitting groove 11 are provided.
The other bearing 70b is held between the encoder case 71 and the encoder case 71 via the cylindrical portion 84.

As described above, the bearing fitting groove 108 and the cylindrical part fitting groove 110 are integrally formed in the driven roller holding parts 61, 62, and the arcuate projections 34at36a and the arcuate projections 34b, 3
6b is integrally formed with the lower case 9, so the direction in which the two driven rollers 66 are arranged is correctly regulated.

Although not shown, by attaching the annular holder 57 to the lower case 9, the lower wall portion 79 of the encoder case 71
comes into contact with the bottom wall portion 17 of the lower case 9 to prevent the encoder case 71 from rotating.

FIG. 45 shows a state in which the annular holder 57 is attached to the lower case 9 in this manner.

FIG. 47 is a plan view of the printed circuit board 56 to which the bushing switch 135 is attached.

A bushing switch 13 is installed at a predetermined position on the printed circuit board 56.
5 is attached to the plurality of lead wires 13 connected to each encoder 67 via this bush switch 135.
conductive pattern 1 for connecting 6 and the cord 15;
37 is formed.

The switch lever 13 disposed above the bush switch 135 is shown in FIGS. 48 and 49.

The switch lever 13 includes a rectangular operating end 14 and a plurality of elastic pieces 13 that protrude near one end of the lower surface of the operating end 14 and are elastically fitted onto the head of a bushing switch 135.
8, and a support leg 139 protruding near the other end of the lower surface of the operating end 14.

As shown in FIG. 50, when the switch lever 13 is fitted to the head of the bushing switch 135, the lower end of the supporting leg 139 faces a part of the printed circuit board 56.
As shown in the figure, the supporting portions 1 facing the supporting legs 139, respectively.
The conductive pattern 137 is not formed on the conductive pattern 40 .

As previously explained, the operating end 14 of the switch lever 13
is exposed from the insertion hole 12 of the upper case 10, and when this operating end 14 is pushed down, the support leg 139 of the switch lever 13 comes into contact with the printed circuit board 56 as shown in FIG.
The switch lever 13 is rotated toward the bush switch 135 using the supporting leg 139 as a fulcrum to perform a switch operation.

As shown in FIG. 47, the printed circuit board 56 has two locking holes 141 into which the small-diameter portions 54 of the support legs 51 are fitted, and the head of the support column 26 erected from the lower case 9 is fitted into the two locking holes 141. Two locking holes 142 are drilled at predetermined positions, respectively.

After attaching the annular holder 57 to the lower case 9 as described above, the small holes 22ay22 on the front side of the lower case 9 are
A support ball 50 and a support leg body 51 are respectively arranged on the upper part b.

As shown in FIG. 18, even when the supporting leg 51 is erected on the lower case 9, the cylindrical portion 25 prevents the supporting leg 51 from falling down and allows it to stand vertically.

Therefore, the small diameter portion 54 of the support leg 51 is attached to the printed circuit board 56.
At the same time, the heads of the columns 26 on both sides (see FIG. 6) are inserted into the locking holes 142 of the printed circuit board 56, and then, as shown in FIG. The printed circuit board 56 is screwed to the support 26 as shown in FIG.

Once the printed circuit board 56 is fixed in this manner, the switch lever 13 is fitted onto the bushing switch 135, and then the upper case 10 is covered and screwed onto the lower case 9 to form the casing 8.

Since the sphere 59 is not yet installed in the casing 8 in this state, the sphere 59 is inserted into the casing 8 through the sphere entrance/exit opening 27 formed in the lower case 9.

Since the two driven rollers 66 arranged in the orthogonal directions (X-Y directions) are supported by the roller holding parts 61 and 62, respectively, the insertion of the sphere 59 causes only the rolling contact roller 122 to absorb the elasticity of the spring member 125. retreat against.

When the insertion is completed, the sphere 59 is held between the two driven rollers 66 and the rolling contact roller 122 using the elasticity of the spring member 125.

When the insertion of the sphere 59 is completed, the sphere entrance/exit opening 27 of the lower case 9 is covered with the ring-shaped lid 42 and screwed (FIG. 4), thereby completing the assembly of the input device.

In the embodiment described above, an encoder is used as a means for detecting the amount of rotation of the driven roller, but the present invention is not limited to this.

FIG. 52 is a schematic configuration diagram showing another example of the rotation amount detection means.

In this case, a rotating disk 143 is attached concentrically to one end of the rotating shaft portion 68 of the driven roller 66,
Near their outer peripheries, there are many reflective parts 1 along the circumferential direction.
44 are provided at equal intervals.

A light emitting element 145 and a light receiving element 146 are installed as a pair at a position facing the reflecting part 144, and the light emitting element 14
The amount of rotation of the driven roller 66 is detected by receiving and counting the reflected light by the light receiving element 146.

Although this example has been explained for the case of a reflective type, a large number of slit-shaped transparent parts are formed along the circumferential direction near the outer periphery of the rotating disk, and the light emitting element 1 and the light receiving element are connected with the rotating disk in between. to face.

It can also be provided as follows.

FIG. 53 is a diagram showing the arrangement of the sphere 59, the two driven rollers 66, and the rolling contact roller 122.

The two driven rollers 66 are held and positioned by the first driven roller holding section 61 and the second driven roller holding section 62, respectively, so that the two driven rollers 66 are arranged so that their axial directions are orthogonal to each other, as shown in the figure. It is located in

On the other hand, the rolling contact roller 122 is disposed at a position in contact with the sphere 59 and facing the two driven rollers 66 via the sphere.

The rolling contact roller 122 is provided to ensure power transmission between the sphere 59 and each driven roller 66, and the rolling contact roller 122 is freely rotated by the rotational force of the sphere 59. At the same time, the spheres 59 are elastically biased toward the respective driven rollers 66.

Contact pressure between the sphere 59 and one of the driven rollers 66 and the sphere 59
The contact point P between the sphere 59 and the rolling contact roller 122 and the sphere 59 are adjusted such that the contact pressure between the sphere 59 and the other driven roller 66 is equal.
A straight line Q connecting the rotation center O of each driven roller 6
The rolling contact roller 122 is arranged so as to interlink with the axial direction of the roller 6 at an angle of about 45 degrees (θ□, θ2).

Therefore, the interlinkage angle θ and 02 in the figure are designed to be equal.

The two driven rollers 66 are individually rotated by the rotational force of the sphere 59, and the rotational direction and amount of rotation of the driven rollers 66 are detected by rotation amount detection means such as encoders 67 that are respectively energized. The rotation state of the sphere 59 is detected separately into each component in the X-axis direction and the Y-axis direction.

The input device 4 is placed on a predetermined base 147 in the state shown in FIGS. 3 to 5.

As shown in these figures, the three support balls 50 partially protrude downward from the small holes 22 a, 22 b, and 22 c, respectively, and these support balls 50 are attached to the casing through the support legs 51. 8, printed circuit board 56,
The annular holding body 57 is shaped to support the weight of the two driven roller encoder blocks 65, the rolling contact roller 122, etc.

Further, a part of the sphere 59 protrudes downward through the opening 47 of the ring-shaped lid 42, and is pressed against the base 147 mainly by its own weight.

If there is water, ink, oil, dust, etc. on the base 147,
While using the input device 4 on the base 147, they adhere to the surface of the sphere 59.

As a result, a slip occurs between the body 59 and the driven roller 66, making it impossible to properly transmit power, resulting in a decrease in reliability as an input device.

Therefore, in the present invention, the ring lid 42 is removable from the lower case 9, and the sphere 59 is periodically or appropriately removed.
can be taken out from the casing 8 and cleaned.

Furthermore, as shown in FIG. 46, the printed circuit board 56 on which the bushing switch 135 is attached is not placed directly above the sphere 59, but is placed at a slightly shifted position, so the total height of the input device 4 is reduced. , it is possible to make it smaller and thinner.

FIGS. 54 to 58 are diagrams for explaining other embodiments of the movement restricting member 148 that restricts upward movement of the support ball 50. FIG.

A bowl-shaped portion 149 that rotatably accommodates the support ball 50 is provided at the lower part of the movement regulating member 148.

Three contact ribs 150 are erected on the outer periphery of the bowl-shaped portion 149 at predetermined intervals, and as shown in FIG. The end face is vertical so that it touches the

An insertion end 151 is provided at the upper part of the bowl-shaped part 149,
This is inserted, for example, into an insertion hole or a recess formed at a proper location in the annular holding body 57, and the movement regulating member 148 is prevented from floating up.

An arm portion 152 extends horizontally outward from a portion of the outer periphery of the bowl-shaped portion 149 where the contact rib 150 is not provided, and an annular portion 153 is integrally formed at the distal end of the arm portion 152 .

57 and 58 are diagrams showing the arrangement of the movement regulating member 148 on the lower case 9. FIG.

As shown in FIG. 58, a steel support ball 50 is placed on the small hole 22 of the lower case 9, and a movement regulating member 1 is placed on it.
48 are arranged.

A stepped support pin 254 is provided upright from the lower case 9 side near the small hole 22 , and its head is inserted into the hole of the annular portion 153 .

The engagement between the annular portion 153 and the support pin 154 and the abutment of the contact rib 150 against the cylindrical portion 25 position the movement regulating member 148 and prevent it from falling.

As described above, the present invention includes a rotatable sphere arranged to be freely rotatable, a first driven roller that is in contact with the rotated sphere and rotates by the rotational force of the rotated sphere, and a rotated sphere that is in contact with the rotated sphere. a second driven roller that is rotated by the rotational force of the sphere and whose axial direction is substantially perpendicular to the axial direction of the first driven roller; and a first rotation amount detection means that detects the amount of rotation of the first driven roller. and second rotation amount detection means for detecting the rotation amount of the second driven roller, wherein the rotation amount detection means detects a patterned substrate and a pattern surface of the patterned substrate. It has a slider that slides on the slider, and a slider receiver that supports the slider and rotates integrally with the slider and has a central hole, and both ends of the rotation shaft of the driven roller are Each of the rotating shafts is supported by a bearing, the slider receiver is arranged adjacent to the inner ring of the bearing, and the tip of the rotating shaft is press-fitted into the center hole of the slider receiver through the inner ring of the bearing. , the locking portion provided on the rotating shaft contacts the inner ring of the bearing, and the inner ring is sandwiched between the locking portion of the rotating shaft and the slider receiver.

By adopting such a configuration, there is no misalignment of the driven roller in the axial direction, so the contact position between the driven roller and the rotated sphere is stable, and the pattern of the slider connected to the driven roller is stabilized. The contact pressure against the substrate is constant, and an appropriate amount of rotation can be detected.

[Brief explanation of drawings]

The figures are all for explaining the X-Y direction input device according to the embodiment of the present invention, and FIG. 1 is a perspective view of a graphic display device including the X-Y direction input device, and FIG. 2 is an input device. A plan view of the device, Figure 3 is a front view of the input device,
Fig. 4 is a bottom view of the input device, Fig. 5 is a side view of the input device, Fig. 6 is a plan view of the lower case, Fig. 7 is a sectional view taken along line A-A in Fig. 6, and Fig. 8 is a Figure 6: Cross-sectional view along line B-B, No. 9
The figure is a sectional view along the line C-C in Figure 6, and Figure 10 is a cross-sectional view along the line C-C in Figure 6.
11 is a sectional view taken along the line E-E of FIG. 6, FIG. 12 is a sectional view taken along the line F-F of FIG. The figure is a front view of the ring-shaped lid, FIG. 15 is a bottom view of the ring-shaped lid, FIG. 16 is a sectional view of the ring-shaped lid, FIG. 17 is a sectional view showing the mounting structure of the ring-shaped lid, and FIG. Fig. 19 is a sectional view of main parts showing the arrangement of the support balls and support legs, Fig. 20 is a plan view of the annular holder, Fig. 21 is a bottom view of the annular holder, and Fig. 22 is a cross-sectional view of the annular holder. Front view, FIG. 23 is a cross-sectional view taken along the line A-A in FIG. 21, FIG. 24 is a cross-sectional view taken along the line A-A in FIG. 20, and FIG.
The figures are a sectional view taken along the line B-B in Figure 21, Figures 26, 27, and 28 are a plan view, front view, and right side view of the driven roller encoder block, and Figure 29 is a main part of the driven roller encoder block. Enlarged sectional view, Fig. 30,
Figures 31 and 32 are a front view, left side view, and right side view of the encoder case, Figure 33 is an exploded perspective view of the slider receiver and slider, and Figure 34 is an exploded perspective view of the slider receiver and slider. 35 is a plan view of the pattern board; FIG. 36 is an exploded perspective view of the rolling contact roller, spindle, roller support member, and spring member; FIGS. 37, 38, and 39. The figures are a plan view, a side view, and a rear view of the roller support member, FIG. 40 is a cutaway side view of essential parts showing the arrangement of the rolling contact roller, roller support member, and spring member in the applying roller holding section, and FIG. FIG. 42 is a cross-sectional view of the main part showing the clamping structure of the bearing, and FIG. 43 is the main part showing the clamping structure of the cylindrical part. 44 is a sectional view of a main part for explaining the support structure of both bearings; FIG. 45 is a plan view with the annular holder attached to the lower case and the printed circuit board removed; FIG. 46
The figure is a plan view showing the annular holder and the printed circuit board attached to the lower case, Figure 47 is a plan view showing the switch attached to the printed circuit board and the switch lever removed, and Figure 48 is the switch lever cut away. Side view,
Fig. 49 is a bottom view of the switch lever, Fig. 50 is a side view of the main part showing the arrangement of the switch lever, Fig. 51 is a side view of the main part with a part cut away to explain the switch operation,
FIG. 52 is a schematic configuration diagram showing another example of the rotation amount detection means;
FIG. 53 is an explanatory diagram showing the arrangement of the sphere, the driven roller, and the rolling contact roller; FIGS. 54, 55, and 56 are a plan view, a cut side view, and a front view of the movement regulating member; FIG. 57 is FIG. 58 is a plan view showing the arrangement of the movement regulating member, and a sectional view taken along the line A-A in FIG. 57. 4...Input device, Death...Casing, 9
...Lower case, 10...Top case, 1
2... Fitting hole, 13... Switch lever 14... Operation end, 22a, 22bv
22c...Small hole, 25...Cylinder part, 2
7... Opening for entering and exiting the sphere, 28... Upward step, 29... Downward step, 33...
...Arc-shaped receiving surface, 34at34b...Arc-shaped projection,
36a, 36b... arcuate projection, 37...
・Arc-shaped receiving surface, 42...Ring-shaped lid, 44...
... tongue piece part, 45 ... mounting part, 47 ...
...Opening, 50...Support ball, 51...
... Support leg body, 52 ... Bowl-shaped part, 54 ...
... Small diameter part, 55 ... Locking part, 56 ...
・Printed circuit board, 57... Annular holding body, 58・
...Through hole, 59...Sphere, 60...
... Penetration part, 61... First driven roller holding part, 62... Second driven roller holding part, 63...
...Applying roller holding section, 64... Connection section, 6
5...Followed roller encoder block, 66
....Followed roller, 67 ....Encoder, 68 ....Rotating shaft section, 69 .... field-ra section, 70 ag 70 b .... Shaft portion, 71...
... Encoder case, 72 ... Slider holder, 73 ... Slider, 74 ... Pattern board, 75 ... Mounting plate, 84 ......Cylindrical part, 85...Direction regulating protrusion, 86...
Annular step part, 87... Small diameter part, 88...
Stepped locking portion, 89... Inner ring, 90...
Central hole, 91... Outer ring, 98... First
Contact end, 101... Inner ring second contact end, 102.
......Outer second contact end, 103...Central pattern section, 104...Inner peripheral pattern section, 1
05... Outer peripheral pattern section, 107...
...Accommodation recess, 108...Bearing fitting groove, 110
......Cylindrical part fitting groove, 112...Recessed part, 114... Fall-off prevention claw, 117...
Accommodation space, 118...Stopper wall, 119.
... Opening part for protruding field, 121 ... Fall-off prevention claw, 122 ... Rolling contact roller, 123 ...
... Support shaft, 124 ... Field support member, 125
... Spring member, 127 ... Bearing part, 1
28...Roller accommodation recessed part, 130...
・Spring holder is a recessed part, 133... Rear wall part, 135
...Button switch, 141...Latching hole, 143...Rotating disc, 144...
・Reflection part, 145... Light emitting element, 146...
... Light receiving element, 147 ... Base, 148.
...Movement regulating member, 149... Bowl-shaped part,
150... Contact rib, 152... Arm portion, 153... Annular portion, 154...
Support pin, O... Center of rotation of the rotated sphere, P.
...Contact point between the rotated sphere and the rolling roller, Q...
...A straight line connecting point O and point P.

Claims (1)

[Scope of utility model registration request] a first driven roller that is in contact with the rotated sphere and rotates by the rotational force of the rotated sphere; a first driven roller that is in contact with the rotated sphere and rotates by the rotational force of the rotated sphere; a second driven roller whose axial direction is substantially perpendicular to the axial direction of the first driven roller; first rotation amount detection means for detecting the amount of rotation of the first driven roller; and the second driven roller. In the X-Y direction input device, the rotation amount detection means includes a patterned substrate and a slider that slides on the patterned surface of the patterned substrate. and a slider receiver that supports the slider and rotates integrally with the slider and has a central hole, both ends of the rotating shaft of the driven roller are supported by bearings, and the A slider receiver is installed adjacent to the inner ring of the bearing, and the tip of the rotating shaft passes through the inner ring of the bearing and is press-fitted into the center hole of the slider receiver. An X-Y direction input device characterized in that a stop portion abuts an inner ring of a bearing, and the inner ring is held between a locking portion of a rotating shaft and a slider receiver.