JPH0755632Y2 - XY direction input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Application of the Invention The present invention relates to an XY direction input device, for example, an X-Y direction input device suitable for a graphic input device of a graphic display device.
The present invention relates to a Y-direction input device.

[Background of the invention]

The graphic display device is basically composed of a display screen display controller, a data channel and various input devices.

Various types of input devices have been conventionally known, and one of them is to detect the moving direction and the moving amount by moving the casing in any direction on the base. XY called "mouse" (trade name)
Directional input devices have been developed.

Such an XY direction input device includes a rotatable sphere (hereinafter, abbreviated as a sphere), which is rotatably arranged and made of, for example, a steel ball, and a first sphere which is in contact with the sphere and is rotated by a rotational force of the sphere. Driven roller, a second driven roller that is in contact with the sphere and is rotated by the rotational force of the sphere, and has an axial direction substantially orthogonal to the axial direction of the first driven roller, and the first and second driven rollers. First and second rotation amount detecting means composed of rotary electric parts such as a variable resistor and an encoder for individually detecting the rotation amount of each roller, and these spheres, first and second driven rollers and first and second Basically, it is composed of a casing that houses the second rotation amount detecting means and the like.

An opening is provided on the lower surface of the casing, a part of the sphere projects downward through the opening, and the sphere is rolled in a predetermined direction on a predetermined base by holding the casing. The two driven rollers rotate in predetermined directions. The rotation direction and the rotation amount of these driven rollers are extracted by the first and second rotation amount detecting means as the voltage or digital signal of each component in the X-axis direction and the Y-axis direction, respectively, and the signals are input to the display device. I'm running.

As described above, the first driven roller and the second driven roller need to be arranged in the casing so that their axial directions are substantially orthogonal to each other. 1st and 2nd so as to be the axis of rotation
It is necessary to fix each of the rotary electric parts of. Therefore, conventionally, a slider receiver having a slider is rotatably supported by a holder that forms an outer shell of a rotary electric component, and a desired pattern portion is provided facing the slider. The cord plate is attached to the holder, and the slider holder is attached to the first
And first fixed to one end of the second driven roller, respectively.
The driven roller and the first rotary electric component, and the second driven roller and the second rotary electric component are connected.

However, in the above-described conventional rotary electric component, since the slider is fixed to one end of the driven roller via the slider receiver to rotate, the slider receiving side support portion of the slider is provided. It was difficult to reduce the sliding torque because it was not possible to increase the length from the contact portion to the cord plate side.

[Purpose of device]

An object of the present invention is to provide an XY direction input device capable of realizing a rotation amount detecting means with a small sliding torque, excluding the above-mentioned drawbacks of the prior art.

[Outline of device]

To achieve this object, the present invention provides a code plate, wherein the rotation amount detecting means has a pattern portion, is fixed to the driven roller and rotates integrally with the driven roller, and the pattern portion of the code plate. It is composed of a slidable slider and a holder that supports one end of the slider, and a supporting portion of the slider and the holder is set at a portion separated from the code plate. And

[Example of device]

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of the entire graphic display device including an XY direction input device according to an embodiment of the present invention.

A display device 2 equipped with a screen, a controller, a data channel, etc. on the table 1.
, An input device 3 having a function key, and an input device 4 according to an embodiment of the present invention. In addition,
The input device 4 is a dedicated sheet 5 laid on the table 1.
The cursor 7 displayed on the screen 6 of the display device 2 can be moved to an arbitrary position by the above operation.

FIG. 2 is an exploded perspective view showing components of the input device 4,
3 to 5 are explanatory views of the main parts of the input device 4, FIG. 3 is a bottom view of the upper case, FIG. 4 is a plan view of the lower case, and FIG. 5 is a plan view of the detection unit. is there.

As shown in these figures, the casing 8 forming the outer shell of the input device 4 is composed of a lower case 9 and an upper case 10 made of, for example, ABS resin, and these cases 9 and 10 are provided with screws (not shown). It is joined and integrated by means of.

A large-diameter opening 11 is formed in the center of the rear case 9 (on the left side in FIG. 4), and a peripheral wall 12 is formed around the opening 11.
Is erected. In addition, a groove 13 is formed around the opening 11.
Two bearing holders 13 and 14 having a and 14a and both bearing holders 1
Two holder holders 15, 16 which are somewhat larger than 3, 14 are provided upright. These holders 13, 14, 15 and 16 are for holding and positioning a driven roller and a rotation amount detecting means described later, and one of them is a bearing holder 13 and a holder holder 15, and the other bearing holder 14 and a holder. The holders 16 form pairs, and the center lines of the pairs are arranged so as to be orthogonal to each other.

A storage body 17 having a vacant chamber 17a is integrally formed on a part of the peripheral wall 12. The storage body 17 is for storing and holding a frictional force applying means, which will be described later, and has a pair of notches 17b formed at the upper end thereof.

In the lower case 9, a pair of elastic projections 18 are provided upright in the vicinity of the holder holding body 15 and the storage body 17, and three support projections 19 are provided upright in the vicinity of both elastic projections 18. ing. These elastic projections 18 are for positioning a switch substrate, which will be described later, with respect to the lower case 9, and each support projection 19
Is for supporting the switch substrate. Further, screw insertion holes 20, 21, 22 and 23 are formed at two locations on the front side and two locations on the rear side of the lower case 9, respectively.

The upper case 10 is designed to have a size that an operator can hold and operate with one hand, and a pair of fitting holes 24 are formed at the front position of the curved upper wall portion. As is clear from FIG. 3, a plurality of welding pins are formed on the inner surface of the upper wall of the upper case 10.
25 are erected, and one end of two switch levers 26 connected to each other by these welding pins 25 has an upper case 10
Is stuck to. This fixation is obtained by penetrating each welding pin 25 through the small hole of the switch lever 26 and then melting the tip of the welding pin 25, whereby the switch lever 26 is
The operating end can rotate by its elasticity with the fitting portion as a fulcrum. The operation end of the switch lever 26 is in a state of slightly protruding from the fitting hole 24 due to this fixation.

Further, on the inner surface of the upper wall portion of the upper case 10, screw insertion holes 27, 27, 27 are provided at positions corresponding to the screw insertion holes 20, 21, 22, 23 of the lower case 9.
28,29,30, the annular rib 31 at a position corresponding to the opening 11,
A pressing protrusion 32 is provided at a position corresponding to the storage body 17, and both elastic protrusions 18
A cylindrical projection 33 is formed at a position corresponding to the above, and a pair of pressing ribs 34 are formed near the cylindrical projection 33, respectively. Further, on the inner surface of the upper wall of the upper case 10, the holding bodies 13, 14, 15, 1
Corresponding to 6, the L-shaped pressing wall 35 is provided along the center line connecting the one bearing holder 13 and the holder holder 15 and the center line connecting the other bearing holder 14 and the holder holder 16. Has been formed.

Between the upper case 9 and the case 10, the main components of the detector shown in FIG. 5 are housed. In the figure, a switch substrate 36 made of a relatively hard insulating material such as a phenol resin is provided with two positioning holes 36a corresponding to the elastic protrusions 18 of the lower case 9. Two push switch 37 and connector 38 on top of 36
Are fixed by soldering, and these are connected by pattern wiring (not shown) formed on the back surface of the switch substrate 36.

The push switch 37 is provided in addition to the switch of the input device 4 itself, for example, the cursor 7 in the display device 2.
It is used for various signal processing such as deleting a part of the display pattern immediately above or immediately below, 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 39 and a plug 40 as shown in FIG.

Further, the switch substrate 36 and the first rotation amount detecting means
A flexible film substrate 43 on which a desired pattern wiring is formed is soldered to the encoder 41 and the second encoder 42, respectively, and the first and second encoders 41 and 42 are connected to the first and second encoders 41 and 42, respectively. Two driven rollers 44 and 45 are connected to each other. Therefore, as is apparent from the above description, the first and second driven rollers 4 are
4,45 and the first and second encoders 41,42 connected to them, and the switch substrate 36 on which the push switch 37 and the connector 38 are mounted are integrated in advance via the flexible film substrate 43. , Are also electrically connected.

6 and 7 are explanatory views of the internal structure of the first encoder 41, FIG. 6 is an exploded perspective view, and FIG. 7 is a sectional view in an assembled state.

As shown in these figures, the first encoder 41 includes a holder 46 that forms the outer shell of the encoder, and three sliders 47.
a, 47b, 47c, and a code plate 48 having a common pattern 48a in the center and an inner peripheral pattern 48b and an outer peripheral pattern 48c around the common plate 48, a cylindrical spacer 49, and a locking nut 50. It is configured.

The holder 46 has a flat portion 51, an annular peripheral wall 52 is formed on one surface side of the flat portion 51, and a cylindrical bearing portion 53 is formed on the other surface side, and the vertical position of the bearing portion 53. On the protrusion 53
A and a positioning protrusion 53b are formed. The bearing 53 is formed at the center of the peripheral wall 52, and the bearing 53 has an insertion hole 54 having a step. In addition, the flat portion 51
, A plurality of welding pins 51a are erected on a portion separated from the peripheral wall 52, and each of the sliders 4 is attached by these welding pins 51a.
One end of 7a, 47b, 47c is fixed to the flat portion 51. The free ends of the sliders 47, one end of which is fixed to the welding pin 51a in this manner, extend through the notches formed in a part of the peripheral wall 52 to the inside of the peripheral wall 52.

On the other hand, at one end of the first driven roller 44, an engagement shaft portion 44a having a diameter slightly smaller than the main shaft portion and an insertion shaft portion 44b having a diameter smaller than the engagement shaft portion 44a are formed. The coupling shaft portion 44a and the insertion shaft portion 44b are inserted into the insertion hole 54 from the bearing portion 53 side. In this way, the spacer 49 and the code plate 48 are sequentially inserted into the insertion shaft portion 44b of the first driven roller 44 which has been inserted into the insertion hole 54 and has reached the inside of the peripheral wall 52, and then the locking nut 50 is inserted. The cord plate 48 is fixed to the first driven roller 44 by locking the cord plate 48 at one end of the insertion shaft portion 44b. At this time, the main shaft portion of the first driven roller 44 and the engagement shaft portion
The step portion between 44a abuts on the peripheral edge portion of the insertion hole 54, while one end of the spacer 49 abuts on the step portion inside the insertion hole 54.
The driven roller 44 is connected to the first encoder 41 in a state where its movement in the axial direction is restricted. Also a code board
The spacer 48 is fixed to the first driven roller 44 while the distance from the flat portion 51 is restricted by the spacer 49.

By assembling the first driven roller 44 and the code plate 48 in the holder 46 in this manner, the first slider 47a becomes the common pattern 48a and the second slider 47b becomes the inner peripheral pattern 48.
In b, the third slider 47c is elastically contacted with the outer peripheral pattern 48c, respectively, but each of the sliders 47a, 47b, 47c has its fulcrum at a portion deviated from the code plate 48 as described above. Therefore, the span from the elastic contact portion of the code plate 48 to the fulcrum can be set long, and stable sliding torque can be obtained.

The first encoder 41 has the structure described above, but the second encoder 42 also has the same structure. That is, the second encoder 42 has a holder 55 (see FIGS. 2 and 5) that forms the outer shell of the encoder.
And three slides supported by the holder 55 and a code plate that comes into contact with these slides, and the code plate is fixed to one end of the second driven roller 45. . Further, a bearing portion 56 is provided on one surface side of the holder 55, a protrusion portion 56a is formed on the upper portion of the bearing portion 56, and a positioning protrusion (not shown) is formed on the lower portion.

Next, the above-mentioned frictional force imparting means will be described mainly using FIGS. 8 and 9.

As shown in FIG. 8, the frictional force imparting means is composed of a synthetic resin rolling contact roller 57, a roller supporting member 58 supporting the rolling contact roller 57, and the container 17 supporting the roller supporting member 58.
And a coil spring 59.

The roller support member 58, which is a molded product of synthetic resin, has a pair of rotation support shafts 58a on the upper side wall and spring receiving protrusions 58b (see FIG. 9) on the lower back surface. Five
A bearing portion 58c is formed at a central position between the spring receiving protrusion 58b and the spring 8a so as to open forward. This bearing
Both ends of a support shaft 60, which is inserted into the rolling contact roller 57, are press-fitted into 58c, so that the rolling contact roller 57 is rotatably supported by the roller support member 58 with the supporting shaft 60 as a rotation axis.

The roller support member 58 is inserted into the vacant chamber 17a of the storage body 17 with one end of the coil spring 59 being locked to the spring receiving projection 58b. Then, as shown in FIG. 9, both rotation support shafts 58a of the roller support member 58 enter into both the notches 17b of the storage body 17, and the coil spring 59 is provided between the roller support member 58 and the inner wall of the storage body 17. The roller support member 58 is urged in the clockwise direction in the figure with the rotation support shaft 58a as a fulcrum by its elastic force. By this urging force, the rolling contact roller 57 supported by the roller supporting member 58 partially projects from the housing 17 toward the opening 11, and at the same time, the roller supporting member 58 partially covers the housing 17. Abutting against the inner wall of the roller support member 58 and the rolling contact roller 57.
Is prevented from coming off.

Next, a method of assembling the input device 4 thus configured will be described mainly with reference to FIGS. 10 to 12. In addition,
FIG. 10 is a plan view with the upper case 10 removed, FIG. 11 is a sectional view taken along the longitudinal direction of the casing 8, and FIG. 12 is a sectional view taken along the lateral direction of the casing 8.

First, as shown in FIG. 10, metal bearings are provided in the respective grooves 13a and 14a of the bearing holding members 13 and 14 provided upright on the lower case 9.
Fit and fix 61 and 62. Next, the first driven roller 44 and the first encoder 41, the second driven roller 45 and the second encoder 42, which are integrated in advance via the film substrate 43, the second driven roller 45, and the switch substrate 36 (see FIG. 5). One ends of the first and second driven rollers 44 and 45 are inserted into the metal bearings 61 and 62, respectively, and the first and second encoders 41 and 42 are positioned on the respective positioning protrusions 53b (on the second encoder 42 side). The positioning protrusions are used to engage and hold the holder holders 15 and 16 by utilizing (not shown). Thereby, the first and second driven rollers
44 and 45 are arranged at predetermined positions on the lower case 9 so that their axial directions are orthogonal to each other.

On the other hand, the switch board 36 is positioned at a predetermined position of the lower case 9 by inserting the two positioning holes 36a into the elastic contact projections 18 provided upright on the lower case 9, and the three support projections 19 are provided. Placed on top. At this time, since the split groove 18a is formed along the axial direction at the center of the elastic protrusion 18, the dimension between the positioning holes 36a of the switch substrate 36 may change due to temperature change or processing error during drilling. Even if there is some variation, the switch substrate 36 can be easily fitted into the elastic protrusion 18.

The first and second driven rollers 44 and 45, the first and second encoders 41 and 42, and the switch substrate 36 described above.
Since the assembling work to the lower case 9 side can be performed in an integrated state through the flexible film substrate 43, the respective parts are not separated, and the complicated soldering work after the assembling is unnecessary. It's very easy to do.

Next, with one end of the coil spring 59 locked to the spring receiving projection 58b of the roller supporting member 58 incorporating the rolling roller 57,
These are inserted into the vacant chamber 17a of the storage body 17, and the rotation support shaft 58a of the roller support member 58 is supported by the cutout portion 17b at the upper end of the storage body 17. Such an assembling work can be performed before the assembling work of the first and second driven rollers 44, 45 and the like described above.

In this way, after the main constituent parts of the detecting portion have been assembled in the predetermined positions of the lower case 9, the lower case 9 is covered with the upper case 10 as shown in FIGS. 2
The lower case 9 and the upper case 10 are integrally joined by connecting the 0, 21, 22, 23 and the screw insertion holes 27, 28, 29, 30 with screws (not shown).

Due to the integration of the lower case 9 and the upper case 10, among the components of the detection unit positioned at a predetermined position of the lower case 9, both metal bearings 61, 62 and the first and second encoders 41, 42 are provided. The protrusions 53a, 56a of the above and the upper walls of the holders 46, 55 are pressed by the pressing wall 35 on the upper case 10 side, and the first and second driven rollers 44, 45 and the first and second encoders. 41 and 42 are sandwiched and fixed between both cases 9 and 10.
Similarly, the lower end of the pressing protrusion 32 vertically provided on the upper case 10 abuts on the upper surface of the roller supporting member 58, thereby preventing the roller supporting member 58 from falling off the storage body 17. further,
The lower ends of the cylindrical protrusion 33 and the pressing rib 34, which are fitted onto the elastic protrusion 18, are in contact with the upper surface of the switch substrate 36, and the cylindrical protrusion 33, the pressing rib 34, and the lower case 9 are erected. The switch substrate 36 is clamped and fixed by the three support protrusions 19.

As described above, two push switch 37 are soldered to the upper surface of the switch board 36, while the upper case 10
One end of two switch levers 26 is fixed to the upper wall,
An operating portion 26a is vertically provided on the lower surface of both switch levers 26. The lower surface of these operation portions 26a faces the upper side of the push switch 37 when the lower case 9 and the upper case 10 are integrated, and thus the operator pushes the switch lever 26 protruding from the upper wall of the upper case 10. And the operation unit 26
The a switch contacts the push switch 37 to perform a desired switch operation.

After the lower case 9 and the upper case 10 are integrated as described above, the rotated sphere 63 made of a steel ball is inserted into the casing 8 through the opening 11 of the lower case 9, and then the opening 64a is formed.
The lid 64 having the above is locked to the periphery of the opening 11 of the lower case 9. As a result, the rotated sphere 63 is rotatably held in the casing 8 by the annular rib 31 of the upper case 10 and the annular holding portion 64b of the lid 64, and the lower end thereof is downward from the opening 64a of the lid 64. Exposed (see FIG. 9).

Next, the principle of rotation amount detection of the above embodiment will be described with reference to FIG.

The rotating spherical body 63 is pressed against the first driven roller 44 and the second driven roller 45 by the rolling roller 57. First
The driven roller 44 and the second driven roller 45 are orthogonal to each other in axial direction, and they contact the rotated sphere 63 from directions perpendicular to each other. The rolling roller 57 is arranged on a straight line connecting the point Q where the axes of the first and second driven rollers 44 and 45 intersect and the center O of the rotated sphere 63, and receives the elastic force of the coil spring 59. The driven spherical body 63 to the first and second driven rollers 4
Press with equal force against 4,45. Since the roller support member 58 that rotatably supports the rolling contact roller 57 is rotatably held in the storage body 17 about the rotation support shaft 58a, the rolling contact roller 57 is rotated by the rotation of the rotated spherical body 63. 57 spindle 60
The rotation support shaft 58a of the roller support member 58 does not swing in the respective axial directions, and the rotated sphere 63 can always be pressed against the first and second driven rollers 44, 45 with a uniform force. it can.

Further, the first and second driven rollers 44 and 45 are connected at their one ends to the first and second encoders 41 and 42 with these as rotation axes. These first and second encoders 41 and 42 are
1, which detects the amount of rotation of the second driven rollers 44, 45,
The rotation state of the rotated sphere 63 can be known by separately detecting the amount of rotation of the rotated sphere 63 for each component in the X direction and the Y direction.

[Effect of device]

As described above, according to the present invention, the rotation amount detecting means is provided with a code plate which is fixed to the driven roller and rotates integrally with the driven roller, and the pattern plate of the code plate. Since it is composed of a slider that can contact and a holder that supports one end of the slider, and the supporting part of the holder of the slider is located at a position apart from the code plate, the fulcrum of the slider It is possible to provide an XY direction input device having a rotation amount detecting means with a small sliding torque, because the span from the cord plate to the contact portion of the cord plate can be set as long as possible.

[Brief description of drawings]

The drawings are all for explaining an XY direction input device according to an embodiment of the present invention, and FIG. 1 is a perspective view of a graphics display device including the XY direction input device, and FIG.
The figure is an exploded perspective view of the input device, FIG. 3 is a bottom view of the upper case, FIG. 4 is a plan view of the lower case, FIG. 5 is a plan view of main parts of the detection unit, and FIG. 6 is a driven roller and an encoder. 7 is an exploded sectional view of the driven roller and the encoder, FIG. 8 is an exploded perspective view of the rolling roller, the support shaft, the roller supporting member, the housing and the coil spring, and FIG. FIG. 10 is a cross-sectional view showing the assembled state, FIG. 10 is a plan view of the input device with the upper case removed, FIGS. 11 and 12 are assembly cross-sectional views of the entire input device, and FIG. 13 is a rotation amount detection principle of the input device. It is an explanatory view shown. 4 ... Input device, 8 ... Casing, 9 ... Lower case, 10 ... Upper case, 11 ... Opening part, 13,14 ... Bearing holding body, 15,16 ... Holder holding body, 17 ... Storage body, 17a ... Vacancy, 17b ... notch, 18 ...
Elastic protrusion, 18a ... Split groove, 19 ... Supporting protrusion, 26 ... Switch lever, 26a ... Operation part, 32 ... Pressing protrusion, 33 ... Cylindrical protrusion, 3
4 ... Pressing rib, 35 ... Pressing wall, 36 ... Switch substrate, 37 ... Push switch, 41 ... First encoder, 42 ... Second encoder, 43 ... Film substrate, 44 ... First driven roller,
45 ... Second driven roller, 46,55 ... Holder, 47 ... Slider, 4
8 ... Code plate, 49 ... Spacer, 50 ... Lock nut, 51 ... Flat part, 52 ... Peripheral wall, 53, 56 ... Bearing part, 54 ... Insert hole, 57 ... Rolling contact roller, 58 ... Roller support member, 59 ... Coil spring, 60 ...
Support shafts, 61, 62 ... Metal bearings, 63 ... Rotated spheres, 64 ... Lids, 64a ... Openings.

Claims (1)

[Scope of utility model registration request] 1. A rotatable sphere arranged rotatably, a first driven roller in contact with the rotated sphere and rotated by the rotational force of the rotated sphere, and a rotated sphere in contact with the rotated sphere. A second driven roller that is rotated by the rotational force of the first driven roller and has an axial direction substantially orthogonal to the axial direction of the first driven roller, and a first rotation amount detection that detects the rotation amount of the first driven roller. Means, second rotation amount detecting means for detecting the rotation amount of the second driven roller, and these rotated spheres, first
In the XY direction input device including a second driven roller and a casing that houses the first and second rotation amount detection means, the rotation amount detection means has a pattern portion and is fixed to the driven roller. And a slider that rotates integrally with the driven roller, a slider that can slidably contact the pattern portion of the code plate, and a holder that supports one end of the slider. An XY direction input device, wherein a supporting portion of the holder and the holder is set at a portion separated from the cord plate.