JPS6234349Y2 - - Google Patents

Description

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

[Conventional technology]

A graphic display device basically consists of a display screen, a display controller, a data channel, and various input devices. One of these input 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- and Y-axis directions is detected. There is a "Joystek" (registered trademark) that generates a signal. 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 "mouse" has been developed in recent years. This input device includes a rotated sphere (hereinafter abbreviated as sphere) made of a rotatably arranged steel ball, for example, and a first driven roller that is in contact with the sphere and rotates by the rotational force of the sphere. , a second driven roller that is in contact with the sphere and rotates 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 rotation angle of the first and second driven rollers. first and second rotation angle detection means each individually detecting a variable resistor, an encoder, etc., and these spheres, first and second driven rollers, first and second rotation angle detection means, etc. It basically consists of a casing for housing.

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 rolling the sphere in any direction on a predetermined base, the first and second spheres can be moved. The two driven rollers each rotate in a predetermined direction. The rotation direction and rotation angle of these driven rollers are
The second rotation angle detection means extracts each component in the X-axis direction and the Y-axis direction as a voltage or digital signal, and these signals are input to a display device.

An example of this type of input device is, for example,
There is a position pointing device disclosed in Publication No. 83737.
In this position pointing device, the transducer elements each include a rotatable shaft, which shafts are rotatably supported on a support surface by bearing elements. These shafts are in contact with the spheres at points on the spheres separated from each other by approximately 90°, and the spheres are pressed against the shafts by means of pressing elements, intended to respectively transmit the rotation of the spheres to the shafts. ing.

[Problem that the invention attempts to solve]

By the way, the above-mentioned pressing element is intended to transmit the rotation of the sphere to the shaft by springing the support part of the wheel and pressing the sphere against the shaft, but the biasing force of the spring may vary. If this happens, the pressure contact force between the sphere and each shaft may deviate from the range suitable for transmitting rotational force, causing the problem that the rotation of the sphere will not be faithfully transmitted to the shaft and the output will become unstable. be.

In addition, bearings support the shaft with a pre-allowed play in order to allow rotation of the shaft, but if this play is large, it may be affected by the direction of movement of the shaft, the direction of rotation of the balls, or the applied force. As a result, the state of contact between the sphere and the shaft becomes unstable, which may adversely affect the output.

This idea was made in view of the above technical background, and is an X-Y direction input device that can reliably transmit the rotation of the sphere to the detection means and stabilize the output state of the signal. Our goal is to provide the following.

[Means for solving problems]

In order to achieve the above object, the present invention includes a rotatable sphere disposed rotatably, 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. a second driven roller that is in contact with and rotates by the rotational force of the rotated sphere and whose axial direction is substantially orthogonal to the axial direction of the first driven roller; and detecting the rotation angle of the first driven roller. a first rotation angle detection means; a second rotation angle detection means for detecting the rotation angle of the second driven roller; and a casing for accommodating a rotation angle detection means, an opening is formed in the lower part of the casing, a part of the rotated sphere projects downward from the opening, and the rotated sphere is rolled on the base. In the direction input device, a first elasticity disposed at a position facing the first and second driven rollers via the rotated sphere and causes the rotated sphere to come into elastic contact with the first and second driven rollers, respectively. a biasing means; a support means for supporting the rotational shafts of the first and second driven rollers so as to be reciprocally movable in a direction substantially parallel to the bottom surface of the casing and facing the rotated sphere; The second elastic urging means elastically receives the urging force of the elastic urging means on the first and second driven roller sides, respectively.

[Effect]

According to the above means, the elastic contact force of the rotated sphere against the first and second driven rollers by the first elastic biasing means is received by the second elastic biasing means, and the force between the rotated sphere and both driven rollers is received by the second elastic biasing means. The balance of forces can be adjusted by varying the support positions of the rotating shafts of both driven rollers, which are supported so as to be able to move substantially parallel to the bottom surface of the casing.

In other words, the movement of the rotation axes of both driven rollers maintains the balance between the first elastic biasing means and the second elastic biasing means, and the rotational sphere and the first and second driven rollers are kept in balance. The pressure contact force between can be automatically adjusted.

〔Example〕

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 are a display device 2 having a screen, a controller, a data channel, etc., an input device 3 having function keys, and an input device 4 according to the embodiment of the present invention.
The input device 4 is operated on a dedicated sheet 5 laid on the table 1.
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.

Next, the structure and operating principle of this input device 4 will be explained. FIG. 2 is a plan view of the input device 4;
3 is a front view of the input device, FIG. 4 is a rear view of the input device, and FIG. 5 is a cutaway side view of the input device.

The casing 8 consists of a lower case 9 and an upper case 10 molded from hard synthetic resin, and as shown in FIGS. 3 and 4, the lower case lower end 11 of the upper case 10 is connected to the case upper end 12 of the lower case 9. It is fitted externally to cover. This is to prevent dust, water, etc. from entering into the casing 8 from the joint between the lower case 9 and the upper case 10.

The upper case 10 is designed to have a size that allows the operator to hold and operate it with one hand, and has an upper wall 13, a left side,
The right side wall portions 14, 14 are inclined at an appropriate angle. An operating end 16 of the switch 15 is located at a predetermined position on the upper wall portion 13 of the upper case 10, that is, at a position opposite to the fingers when the upper case 10 is grasped by hand.
A rectangular insertion hole 17 into which the holder is inserted is formed. This switch 15 is of a push-button type, and as shown in FIG. It is used for deleting a part of the display pattern directly above the display pattern, moving it to another display position, and other controls. As shown in FIGS. 3 to 5, the operating end 16 of the switch 15 slightly protrudes from the upper case 10. As shown in FIGS.

FIG. 6 is a bottom view of the upper case 10, showing the upper wall portion 13.
A cylindrical portion 18 is integrally provided at a predetermined position on the inner surface of the cylindrical portion 18, and a short tubular elastic shock absorber 19 made of synthetic rubber or the like is inserted inside the cylindrical portion 18. Cylinder part 1
The buffer body 19 is fixed within the buffer body 8 by forcibly pushing it in using the elasticity of the buffer body 19, or by using an adhesive or the like. As shown in Figure 5,
In order to perform the function of the buffer body 19, its lower end protrudes slightly lower than the lower end of the cylindrical portion 18.

As shown in FIG. 6, the front wall 20 of the upper case 10
A bushing fitting notch 21 is provided approximately in the center of the bushing, and connecting holes 22, 22 are provided on both sides of the bushing fitting notch 21. Further, a screw insertion portion 25 into which a tapping screw 24 (see FIG. 5) is screwed is integrally provided at the center of the inner surface of the rear wall portion 23 of the upper case 10 in a protruding manner.

FIG. 7 is a plan view of the lower case 9 to which the mounting plate 26 is attached, and FIG. 8 is a bottom view of the lower case 9. A bushing fitting notch 28 is formed approximately in the center of the front wall 27 of the lower case 9, and connecting pawls 29, 29 are provided on both sides of the notch 28 to project forward.
A screw insertion portion 32 having an insertion hole 31 is integrally provided at the center of the inner surface of the rear wall portion 30 of the lower case 9 . As shown in FIG. 7, a mounting plate 26 made of metal or hard synthetic resin is connected with screws 33 on top of the lower case 9 with a slight gap between them. In addition to being used for attachment, it also serves as a reinforcing member for the lower case 9. Further, a plurality of pillars 34 (three in this embodiment) are integrally erected from the lower case 9, and a conductive pattern (not shown) of a predetermined shape is provided on the upper part of these pillars as shown in FIG. A printed circuit board 35 is attached with screws. In this embodiment, one support column 34 extends upward through the mounting plate 26, as shown in FIG.

The lower case 9 and the upper case 10 are joined by fitting the connecting claws 29, 29 of the lower case 9 into the connecting holes 22, 22 of the upper case 10, respectively, as shown in FIG.
As shown in FIG. 5, this is done by screwing the tapping 24 into the screw insertion portion 25 of the upper case 10 from the lower case 9 side. When joining the lower case 9 and the upper case 10, the rubber bushing 36 is fitted between the bushing fitting notches 21 and 28, and is sandwiched between the lower case 9 and the upper case 10. The bushing 36 is for protecting the signal line 37, one end of the signal line 37 is connected to the printed circuit board 35 as shown in FIG. 5, and the other end is the input of the display device 2 as shown in FIG. connected to the end. This signal line 37 has a length that does not interfere with operating the input device 4 on the seat 5.

As shown in FIG. 7, a circular opening 38 is formed at a predetermined position in the lower case 9, and the mounting plate 26
A through hole 39 having a slightly larger diameter than the opening 38 is provided at a position facing the opening 38 . 9th
The figure is an enlarged sectional view taken along the line of FIG. As shown in this figure, the peripheral edge of the opening 38 is tapered 4 so that the diameter becomes slightly smaller toward the bottom.
0, and an annular first jetty 41 is provided at the lower peripheral edge of the opening 38 so as to surround the opening 38. An annular second jetty 42 is provided on the outside of the first jetty 41 in the radial direction with a predetermined gap therebetween.The first jetty 41 and the second jetty 42 are integrally protruded from the lower case 9, and both They are almost the same height.

As shown in FIG. 8, the first jetty 41 and the second
Since the jetty 42 is offset toward the rear of the lower case 9, correspondingly, balancing projections 43 are provided on both sides of the front. In the case of this example, the input device 4 is supported at three points by a sphere 44 (described later) that partially protrudes from the opening 38 of the lower case 9 and protrusions 43, 43 on both sides, and is balanced so that the input device 4 as a whole does not wobble. There is.

FIG. 10 is an enlarged plan view of the operating section during assembly of the input device. The spherical surface of the sphere 44 has a first
The driven roller 45 and the second driven roller 46 are in contact with each other, and both rollers 45 and 46 are each mounted on a bearing 47.
It is rotatably attached to the mounting plate 26 via. In this example, although not shown, each bearing 4
7 is screwed to the mounting plate 26. Said first
The driven roller 45 and the second driven roller 46 are molded from polyacetal resin mixed with glass fiber in a predetermined proportion. On the other hand, the bearing 47 is made of, for example, fluororesin or polyacetal resin, which has a small coefficient of friction.

As shown in FIG. 10, when the operating section is viewed from above, the first driven roller 45 and the second driven roller 46 are arranged so that their axial directions are perpendicular to each other, and both rollers 45 and 46 are rotated by the rotation of the sphere 44. Each is rotated individually by a force. The rotation direction and rotation angle of the first driven roller 45 are detected by a first variable resistor 49 connected via a rotation shaft 48. On the other hand, the rotation direction and rotation angle of the second driven roller 46 are as follows:
It is detected by the second variable resistor 51 connected via the rotating shaft 50. That is, as shown in FIG. 11, changes in the rotation direction and rotation angle of the first driven roller 45 appear as the slide direction and the amount of movement of the slider 52 in the first variable resistor 49. Similarly, changes in the rotation direction and rotation angle of the second driven roller 46 appear as the slide direction and the amount of movement of the slider 53 in the second variable resistor 51. Therefore, the rotational state of the sphere 44 is divided into the x-axis direction and the y-axis direction.
It can be divided into each component in the axial direction and detected as the respective voltage values of the first variable resistor 49 and the second variable resistor 51. For this reason, the variable resistors 49 and 51 need to be able to respond appropriately even to small torques.

The terminal group 54 of the first variable resistor 49 and the second
The terminal group 55 of the variable resistor 51 extends upward and is connected to the printed circuit board 35, respectively.

FIG. 12 shows a sphere 44 and driven rollers 45, 46.
FIG. 4 is an explanatory diagram showing the respective arrangement states of the elastic urging rollers 56 and 56. FIG. As shown in FIG. 1 and FIG. 10, the elastic biasing roller 56 is placed in contact with the sphere 44 and facing the first driven roller 45 and the second driven roller 46 via the sphere 44. The elastic biasing roller 56 is provided to ensure power transmission between the spherical body 44 and the first driven roller 45 as well as between the spherical body 44 and the second driven roller 46. The roller 56 is freely rotated by the rotational force of the sphere 44 and elastically urges the sphere 44 toward the first driven roller 45 and the second driven roller 46 side.

As shown in FIG. 12, the sphere 44 and the first driven roller 45 are arranged so that the contact pressure between the sphere 44 and the first driven roller 45 is equal to the contact pressure between the sphere 44 and the second driven roller 46.
4 and the contact point P of the elastic biasing roller 56 and the rotation center O of the body 44 so that it passes through the center point between the first driven roller 45 and the second driven roller 46, that is, θ ₁ = The elastic biasing roller 56 is arranged so that _θ2 .

After the first driven roller 45, the second driven roller 46, the first variable resistor 49, the second variable resistor 51, and the elastic biasing roller 56 are attached to the mounting plate 26, the mounting plate 26 is attached to the lower case 9. It is designed to be fixed to the inner surface of the

In addition to metals such as steel balls, glass and synthetic resin are also conceivable materials for the sphere 44, but since these materials alone have a lower specific gravity than metal, they do not provide sufficient frictional force with the base and may not slip. I can't get a proper input signal. For these reasons, the metal sphere 44 is preferable, but it is also necessary to control the roughness of the spherical surface within a predetermined range.

FIG. 13 is a partial front view of the rotating shafts 48 and 50 that support the driven rollers 45 and 46. Rotating axis 4
Two flat portions 66 facing each other are provided on the outer periphery at locations supporting the driven rollers 45 and 46 of 8 and 50, thereby forming an oval cross-sectional shape. Driven rollers 45, 46 on the outer peripheries forming flat portions 66 of rotating shafts 48, 50 as shown by dashed lines
is fitted, and a retaining washer 67 is attached to the rotating shafts 48, 50.
The distance L ₁ between the roller 7 and the other end of the flat portion 66 is designed to be slightly longer than the roller width L ₂ of the driven rollers 45 and 46 . Therefore, the driven rollers 45 and 46
It is designed to be able to move along the axial direction of the rotating shafts 48 and 50 by the difference between L ₁ and L ₂ , and when the sphere 44 moves somewhat in the horizontal direction during operation of the input device 4, the driven roller 45 and 46 are now able to follow it.

14 is a side view of the elastic biasing means 68 including the elastic biasing roller 56, FIG. 15 is a rear view of the elastic biasing means 38, and FIG. 16 is a wire spring 69 used in the elastic biasing means 68. FIG.

The elastic biasing means 68 includes an elastic biasing roller 56 made of synthetic resin or hard rubber, a support shaft 70 that rotatably supports the elastic bias roller 56, and a support shaft 70 for rotatably supporting the elastic bias roller 56.
A support stand 71 that slidably supports both ends of the
and a wire spring 6 as a first elastic biasing means for elastically biasing the elastic biasing roller 56 toward the sphere 44.
It consists of 9. As shown in FIG. 15, movement preventing portions 7 are provided at both ends of the support shaft 70 to prevent the wire spring 69 from moving in the axial direction and coming off.
2 are provided respectively. On the support base 71, support protrusions 73, 73 that respectively support both ends of the support shaft 70 are erected at a predetermined interval, and a cut groove 74 is cut in the upper part of the support protrusions 73 toward the sphere 44 side. are respectively formed, and both ends of the support shaft 70 are slidably inserted into the cut grooves 74, and the elastic biasing roller 56 supported by the support shaft 70
is rotatably inserted between the support protrusions 73, 73.

As shown in FIG. 16, the wire spring 69 has two base end portions 75 extending in the horizontal direction, and
The base end portion 75 and the pressing portion 76 are easily formed into one body by bending a single spring wire. be done. As shown in FIGS. 14 and 15, the base end 75 is connected to the support base 7.
The wire springs 69 are positioned by being inserted from both sides of the shaft 1, while the pressing portions 76 are brought into elastic contact with both ends of the support shaft 70, respectively. Due to this elastic contact, the elastic biasing roller 56 is brought into elastic contact with the sphere 44, and the sphere 44 is also brought into equal elastic contact with the first and second driven rollers 45, 46, so that there is a gap between the sphere 44 and the first driven roller 45. Also, a desired contact pressure is obtained between the sphere 44 and the second driven roller 46.

In order to efficiently make elastic contact between the sphere 44 and the first and second driven rollers 45 and 46 by the elastic biasing means 68, as shown in FIG. The contact point R with the roller 45, the contact point S between the sphere 44 and the second driven roller 46, and the contact point P between the sphere 44 and the elastic biasing roller 56 are designed to be on the same plane.

FIG. 17 is an enlarged plan view of the operating portion when the mounting plate 26 is not used, and FIG. 18 is a side view partially taken in section along the line of FIG. 17. In the case of this input device, the aforementioned mounting plate 26 is used to reduce the number of parts.
are not used, and therefore the bearings 47 of the first and second driven rollers 45, 46, the first and second variable resistors 49, 51, and the elastic biasing means 6
8 and the like are directly attached to the lower case 9 by suitable means such as screws. Since the rotating shafts 48 and 50 must be inserted into each bearing 47, it cannot be molded integrally with the lower case 9.
As shown in FIG. 18, they are attached by screws 78 inserted from the bottom surface of the lower case 9.

If this input device 4 falls, for example, with the first or second driven rollers 45, 46 on the bottom and the sphere 44 on the top, the weight of the sphere 44 will cause the first or second driven rollers 45, 46 to fall, A large impact force is applied to 46. This impact force is transmitted to the rotating shafts 48, 50 and the respective bearings 47 via them, and the rotating shafts 48, 50 may be deformed, or the bearings 47 may become loose or come off from the lower case 9.

Therefore, as shown in FIG.
Two shaft deformation prevention projections 79 are integrally provided on the lower case 9 on the opposite side to the sphere 44 near the shaft 50.
The rotation shafts 48, 50 are arranged so as not to interfere with the rotation of the
17 and 18, a bearing support 80 is integrally provided on the opposite side of the sphere 44 of each bearing 47 so as to protrude from the lower case 9, and a corner of the bearing 47 abuts against a step 81 (see FIG. 17) formed on each bearing support 80, thereby enabling the positioning of the bearing 47 on the lower case 9.

The pressing force between the sphere 44 and the first and second driven rollers 45 and 46 by the elastic biasing means 68 greatly affects the transmission performance of rotational force and is extremely important for obtaining a stable input signal. However, in the case of the elastic biasing means 68 having the above-described structure, there are variations in the spring elasticity of the wire spring 69 itself, variations in the diameter dimensions of the sphere 44 and the elastic biasing roller 56, and variations in the mounting position of the support base 71. , it may be difficult to obtain the desired contact force.

To this end, as shown in FIGS. 19 and 20, an elongated hole 82 extending toward the sphere 44 is formed in the lower case 9 or the aforementioned mounting plate 26, and by tightening the adjustment screw 83, the elastic It is sufficient if the block of the biasing means 68 can be slightly adjusted in position relative to the sphere 44. In addition, 8 in the figure
Reference numeral 4 denotes a guide member that engages with the support base 71 to regulate the sliding direction of the elastic biasing means 68.

In addition, the sphere 44 and the first and second driven rollers 4
The methods shown in FIGS. 21 and 22 are also effective as means for automatically adjusting the pressure contact forces 5 and 46 within a desired range.

That is, the first and second driven rollers 45, 4
As shown in FIG. 22, a long elongated shaft insertion hole 85 is provided in the bearing 47a on which the distal ends of the rotating shafts 48 and 50 supporting the lower case 9 are supported. is formed into which the tips of the rotating shafts 48 and 50 are slidably inserted. Therefore, each of the rotating shafts 48 and 50 can rotate slightly in the horizontal direction about the bearing 47b on the base side as a fulcrum. Furthermore, the rotating shafts 48, 50
A receiving pin 86 serving as a second elastic urging means is provided upright on the side opposite to the spherical body 44 near the tip thereof, and is in contact with the circumferential surfaces of the rotating shafts 48 and 50. Therefore, if the biasing force of the elastic biasing means 68 is too strong, the receiving pin 86 will bend accordingly, while if the biasing force of the elastic biasing means 68 is weak, the elastic force of the receiving pin 86 will be bent. Because,
Sphere 44 and first and second driven rollers 45, 46
The pressure contact force is automatically adjusted to the desired range. It is even more effective to combine this automatic adjustment means with the position adjustment of the elastic biasing means 68 explained in FIGS. 19 and 20.

In the embodiment described above, the rotation angle of the driven roller is detected by a variable resistor, but an encoder or the like may be used instead.

[Effect of idea]

As described above, the rotating shafts of the first and second driven rollers are supported so as to be able to reciprocate in a direction opposite to the rotated sphere, and the first elastic member biases the rotated sphere in the direction of both driven rollers. force means and this first
and second elastic biasing means that receives the biasing force from the elastic biasing means on both driven roller sides.
- According to the Y-direction input device, the urging force by the first elastic urging means and the urging force by the second elastic urging means can be balanced by changing the position of the rotation axis of the driven roller. Therefore, the pressing forces between the rotated sphere and the first and second driven rollers are automatically adjusted to predetermined values. Therefore, the rotational force is reliably transmitted from the rotated sphere to the driven roller, and as a result, it is possible to provide a highly reliable X-Y direction input device with a stable signal output state.

[Brief explanation of the drawing]

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 input device, and FIG. 2 is a plan view of the input device. Figure 3 is a front view of the input device, Figure 4 is a rear view of the input device, Figure 5 is a cutaway side view of the input device, Figure 6 is a bottom view of the upper case, and Figure 7 shows the mounting plate. A plan view of the attached lower case, Figure 8 is a bottom view of the lower case, and Figure 9 is a bottom view of the lower case.
The figures are Fig. 8 - an enlarged sectional view on the line, Fig. 10 is an enlarged plan view of the actuating part of the input device, Fig. 11 is a principle diagram of the actuating part, and Fig. 12 is the arrangement of the sphere, driven roller, and urging roller. Explanatory drawings showing the state, FIG. 13 is a partial front view of the rotating shaft, FIG. 14 is a side view of the elastic biasing means, FIG. 15 is a rear view of the elastic biasing means, and FIG. 16 is the elastic biasing. FIG. 17 is a perspective view of the wire spring used in the means; FIG. 17 is an enlarged plan view of the operating section of the input device; FIG.
The figures are FIG. 17 - a side view with a part of the line in cross section, FIG. 19 is a plan view of the elastic biasing means, and FIG. 20 is a rear view with a main part of the elastic biasing means in cross section.
FIG. 21 is an enlarged plan view of the operating section of the input device;
FIG. 2 is a side view of the vicinity of the bearing in the operating section. 4...Input device, 5...Seat, 8...Casing, 9...Lower case, 10...Upper case, 38
... Opening, 44 ... Sphere, 45 ... First driven roller, 46 ... Second driven roller, 47, 48, 5
0... Bearing, 49... First variable resistor, 51...
Second variable resistor, 46... Elastic biasing roller, 68
... Elastic biasing means, 71 ... Support stand, 82 ... Elongated hole, 83 ... Adjustment screw, 84 ... Guide member, 8
5...Shaft insertion hole, 86...Receiving pin.

Claims (1)

[Claims for Utility Model Registration] (1) A rotated sphere arranged to be freely rotatable, a first driven roller that contacts the rotated sphere and rotates by the rotational force of the rotated sphere, and the rotated sphere. a second driven roller that is in contact with and rotates by the rotational force of the rotated sphere and whose axial direction is substantially orthogonal to the axial direction of the first driven roller; and detecting the rotation angle of the first driven roller. a first rotation angle detection means; a second rotation angle detection means for detecting the rotation angle of the second driven roller; and a casing for accommodating a rotation angle detection means, an opening is formed in the lower part of the casing, a part of the rotated sphere projects downward from the opening, and the rotated sphere is rolled on the base. In the direction input device, a first elastic member disposed at a position facing the first and second driven rollers via the rotated sphere and causes the rotated sphere to come into elastic contact with the first and second driven rollers, respectively. a biasing means; a support means for supporting the respective rotational shafts of the first and second driven rollers so as to be reciprocally movable in a direction substantially parallel to the bottom surface of the casing and facing the rotated sphere; An X-Y direction input device comprising: second elastic biasing means for elastically receiving the biasing force of the elastic biasing means on first and second driven roller sides, respectively. (2) In claim (1) of the utility model registration, it is stated that the position of the first elastic biasing means can be adjusted so that it approaches or moves away from the rotated sphere. Featured X-
Y direction input device.