JPH11329161A - Control key device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability and operability of a key top part by bringing the collar part of a pressing operation part into contact with the locking part of a case when no pressing force is added to the pressing operation part of the key top part. SOLUTION: A top case 1 has a cross opening part 3, and a key top pressing boss 4 is provided on the angle part of the opening part 3. A key top 2 has a pressing operation part 2a and a key top collar 6 provided on the lower surface of the pressing operation part 2a, and a swollen part 5 is provided in the crossing part on the side surface of the pressing operation part 2a. The swollen part 5 makes contact with the key top pressing boss 4 of the top case 1 in the part shown by a black point 11 in no-load state to position the key top 2. A rubber contact 13 is provided under the key top 2 through a spacer 12, and the rubber contact 13 has four contact parts in conformation to the four pressing operation parts 2a of the key top 2. The contact under the pressed pressing operation part 2a is closed, and the moving direction of a display character or the like is inputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a control key device for a video game device or a portable electronic game device.

[0002]

2. Description of the Related Art Conventionally, as a control key device used for a video game device or a portable electronic game device, a control key device using a cross-shaped key top and a rubber contact has been known.

FIG. 7 is a plan view of a conventional control key device. A cross-shaped opening 3 is provided in the top case 1 of the control key device.
A cross-shaped key top 2 is fitted with a slight space therebetween.

[0004] A player of the game device presses the pressing operation portions 2a on the upper, lower, left and right sides of the key top 2 to close or open rubber contacts under each pressing operation portion 2a, thereby displaying the game device. Enter the moving direction of the character or the like. The hatched portion 50 on the periphery of the opening 3 is a portion serving as a fulcrum when the key top 2 is tilted, which will be described later.

FIG. 8 is a cross-sectional view of the conventional control key device taken along the line C--C in FIG.
(1) shows a no-load state in which none of the pressing operation units 2a of the key top 2 is pressed. The center of the bottom surface of the key top 2 projects downward with a tip portion serving as a convex spherical surface 24, and the lower surface of the pressing operation portion 2 a of the key top 2 has a contact pressing portion 20 abutting against the elastic movable portion 22 of the rubber contact 13. It has become.

The rubber contact 13 is a movable contact made of a conductive rubber, and includes an elastic movable portion 22, a hollow cylindrical skirt portion 28 on the periphery of the elastic movable portion 22, and a movable contact portion on the lower surface of the elastic movable portion 22. 23 and the like. The circuit board 29 has an electrode 27 at a position facing the movable contact portion 23.

In the no-load state, the key top 2 is set so that the rubber contact 13 is formed so that a minute gap exists between the convex spherical surface 24 at the center of the bottom of the key top 2 and the spherical receiver 25 provided on the circuit board 29. Is pushed upward by the elastic force of the hakama portion 28. The key top 2 is stationary at a position where the key top flange 6 provided on the side surface of the key top 2 contacts the case edge 30 of the top case 1.

FIG. 8B shows a load state in which the pressing operation portion 2a of the key top 2 is pressed in one direction. When the pressing operation portion 2a is pressed in one direction, the key top 2 is provided at a fulcrum 51 at a portion where the key top flange 6 contacts the case edge 30 of the top case 1 on the opposite side of the pressed pressing operation portion 2a.
To tilt as.

Then, the contact pressing portion 20 on the lower side of the pressed operating portion 2a pushes down the elastic movable portion 22, and the movable contact portion 23 on the lower surface of the elastic movable portion 22 is formed on the circuit board 29. It is brought into contact with the electrode 27. As a result, the electrode 27 is electrically short-circuited.

FIG. 9 is a cross-sectional view of a portion of another conventional control key device shown by an arrow CC in FIG.
FIG. 9A shows a no-load state in which none of the pressing operation units 2a of the key top 2 is pressed, and FIG. 9B shows a load state in which the pressing operation unit 2a is pressed in one direction.

In the conventional example shown in FIG. 9, the key top 2 has a concave spherical surface 40 at the center of the bottom surface, and the circuit board 29 has a sphere holding portion 42 and a sphere 41 at a position facing the concave spherical surface 40. In a no-load state, the key top 2 is attached to the case edge 3 of the top case 1 by the elastic force of the rubber contact 13.
It is stationary at the position where it comes into contact with zero.

Also in this conventional example, in a load state in which the pressing operation portion 2a of the key top 2 is pressed in one direction, the key top 2 has a key top flange 6 on the opposite side of the pressed pressing operation portion 2a. The case 1 is tilted with the portion in contact with the case edge 30 as a fulcrum 52, and the movable contact portion 23 on the lower surface of the elastic movable portion 22 is brought into contact with the electrode 27 formed on the circuit board 29.

[0013]

In the conventional control key device, when the pressing operation portion 2a of the key top 2 is pressed in one direction, as shown in FIGS. 8 (2) and 9 (2). , The pressed operation part 2 a of the key top 2 depressed
The key top flange 6 on the opposite side serves as a fulcrum 51 or 52 for tilting the key top 2.

Therefore, in the conventional control key device, the key top flange 6 on the side surface of the key top 2 directly contacts the case edge 30 of the top case 1, so that an impact force is applied to the key top flange 6. Since the control key device in the game device is used very frequently, there is a problem that the key top flange 6 is easily damaged by an impact applied each time the key top operation is performed, and the durability of the control key device is low. The portion where the key top flange 6 abuts on the case edge 30 of the top case 1 is indicated by a hatched line 50 in FIG.
Indicated by

In the conventional control key device,
Since the key top 2 tilts with the key top flange 6 as a fulcrum 51 or 52, the four pressing operation parts 2a of the key top 2
When one of the two is pressed, the rubber contacts 13 corresponding to the other three pressing operation units 2a other than the one pressing operation unit 2a pressed by the player are also pressed into about half of the original stroke. Met. For this reason, the operation force for operating the key top 2 is unnecessarily increased, and the life of the rubber contact 13 is shortened due to an increase in the frequency of expansion and contraction.

Accordingly, it is an object of the present invention to provide a control key device having improved durability. Another object of the present invention is to provide a control key device with improved operability.

[0017]

An object of the present invention is to provide a key top in which four pressing operation portions are arranged symmetrically with respect to the center thereof to form a cross shape, and a projection is provided between adjacent pressing operation portions. And a case having an opening exposing the pressing operation portion and a locking portion at a position corresponding to the projection, and movably supported by elastic members arranged corresponding to the pressing operation portions, respectively. An elastic movable portion having a movable contact portion, wherein the key top portion is configured such that when the pressing force is not applied to the pressing operation portion, the protrusion is locked by the elastic force of the elastic movable portion. The invention is attained by providing a game operation control key device which is held in contact with a part.

According to the present invention, when the pressing force is not applied to the pressing operation portion, the key top portion is positioned in a stationary state by the protrusion of the pressing operation portion abutting the locking portion of the case. Since the protrusion of the pressing operation portion has a shorter stroke at the time of operation than the peripheral portion and has a smaller impact force from the case, the durability of the control key device for game operation can be improved.

[0019] Further, the above object is to provide a key top having four pressing operation portions arranged symmetrically with respect to the center thereof, forming a cross shape, and having a flange portion between adjacent pressing operation portions;
A case having an opening for exposing the pressing operation portion and a locking portion at a position corresponding to the flange portion, and a movable member movably supported by elastic members arranged corresponding to each of the pressing operation portions. An elastic movable portion having a contact portion,
The game operation, wherein, when no pressing force is applied to the pressing operation portion, the key top portion is held by abutting the flange portion against the locking portion by the elastic force of the elastic movable portion. Is achieved by providing a control key device.

According to the present invention, when no pressing force is applied to the pressing operation portion, the key top portion is positioned in a stationary state by the flange portion of the pressing operation portion abutting the locking portion of the case. Since the flange portion of the pressing operation portion has a shorter stroke at the time of operation than the peripheral portion and has a smaller impact force from the case, the durability of the control key device for game operation can be improved.

[0021] The above object is also achieved by providing four pressing operation portions which are arranged symmetrically with respect to the center thereof to form a cross, a projection provided between adjacent pressing operation portions, and wherein the pressing operation portions are orthogonal to each other. A key top portion having a central portion provided on the bottom surface portion to be opened, and an opening for exposing the pressing operation portion,
A case having a locking portion provided at a position corresponding to the protruding portion, and a substrate having a pair of electrode portions disposed at symmetrical positions with respect to the orthogonal point on straight lines orthogonal to each other, A fulcrum member is located at an intermediate portion between the pair of electrode portions and is disposed on the substrate so as to face the central portion, and is movably supported by elastic members disposed corresponding to the respective electrode portions. An elastic movable portion having a movable contact portion, wherein the key top portion is configured such that when the pressing force is not applied to the pressing operation portion, the protrusion is locked by the elastic force of the elastic movable portion. The central portion and the fulcrum body are held so as to be spaced apart from each other at a small interval, and the central portion responds to the pressing force applied to the pressing operation portion, and the central portion is supported by the fulcrum body. And tilted with the fulcrum body as a fulcrum, The movable contact portion conducts the corresponding electrode portion, and when the pressing force is released, the movable contact portion is urged upward by the elastic force of the elastic movable portion to return to the position where the protrusion comes into contact with the locking portion. The present invention is attained by providing a game operation control key device characterized in that it is configured to perform the following operations.

According to the present invention, when no pressing force is applied to the pressing operation portion, the key top portion is positioned in a stationary state by the projection of the pressing operation portion abutting on the locking portion of the case. When a pressing force is applied to the pressing operation unit,
The central portion of the key top portion contacts the fulcrum body and tilts with the fulcrum body as a fulcrum.

Therefore, the peripheral portion of the key top portion does not become a fulcrum of tilting, and damage to the peripheral portion of the key top portion can be prevented.

Further, since the central portion of the key top portion serves as a fulcrum of tilting, no pressing force is applied to rubber contacts other than the rubber contact corresponding to the pressed pressing operation portion. For this reason, the operation force applied to the key tops is reduced, the operability can be improved, and the frequency of expansion and contraction of the rubber contacts decreases, so that the life of the rubber contacts can be extended.

The object of the present invention is to provide a cross-shaped four pressing operation portions which are arranged symmetrically with respect to the center thereof, a flange portion provided between adjacent pressing operation portions, and the pressing operation portions are orthogonal to each other. A key top portion having a central portion provided on the bottom surface portion to be opened, and an opening for exposing the pressing operation portion,
A case having a locking portion provided at a position corresponding to the flange portion, and a substrate having a pair of electrode portions disposed at symmetrical positions with respect to an orthogonal point on straight lines orthogonal to each other, A fulcrum member is located at an intermediate portion between the pair of electrode portions and is disposed on the substrate so as to face the central portion, and is movably supported by elastic members disposed corresponding to the respective electrode portions. An elastic movable portion having a movable contact portion, wherein the key top portion is configured such that when the pressing force is not applied to the pressing operation portion, the flange portion is locked by the elastic force of the elastic movable portion. The central portion and the fulcrum body are held so as to be spaced apart from each other at a small interval, and the central portion responds to the pressing force applied to the pressing operation portion, and the central portion is supported by the fulcrum body. And tilted with the fulcrum body as a fulcrum, The movable contact portion conducts the corresponding electrode portion, and when the pressing force is released, the movable contact portion is urged upward by the elastic force of the elastic movable portion to return to the position where the flange portion comes into contact with the locking portion. The present invention is attained by providing a game operation control key device characterized in that it is configured to perform the following operations.

According to the present invention, when no pressing force is applied to the pressing operation portion, the key top portion is positioned in a stationary state by the flange portion of the key top portion abutting on the locking portion of the case. Further, when a pressing force is applied to the pressing operation portion, the central portion of the key top portion comes into contact with the fulcrum body and tilts with the fulcrum body as a fulcrum.

Therefore, the peripheral portion of the key top portion does not serve as a fulcrum of tilting, and damage to the peripheral portion of the key top portion can be prevented.

Since the center of the key top portion serves as a fulcrum for tilting, no pressing force is applied to rubber contacts other than the rubber contact corresponding to the pressed pressing operation portion. For this reason, the operation force applied to the key tops is reduced, the operability can be improved, and the frequency of expansion and contraction of the rubber contacts decreases, so that the life of the rubber contacts can be extended.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a control key device according to an embodiment of the present invention. The key top 2 is exposed from the opening 3 of the top case 1 to the outside,
A pressing operation portion 2a having a cross shape is provided on the exposed portion.
A boss 4 indicated by a dotted line is provided at the corner of the cross hole of the top case 1 on the back surface of the top case 1 and is in contact with the key top 2 in a no-load state.

FIG. 2 is a sectional view of the top case 1 and the key top 2 at a location indicated by an arrow AA in FIG. FIG. 2A shows an example in which a bulging portion 5 is provided on the side surface of the key top 2 and the bulging portion 5 is in contact with the key top holding boss 4 of the top case 1.

In a no-load state, the key top 2 receives a pressing force in the direction of arrow 7 by the rubber contact 13 described above, and is positioned by the bulging portion 5 of the key top 2 and the key top holding boss 4 of the top case 1. This prevents the key top 2 from rattling in a no-load state.

FIG. 2B shows an example in which the side surface of the key top 2 is straight, and the key top holding boss 8 of the top case 1 is in direct contact with the key top flange 6. FIG.
Also in (2), the key top 2 receives the pressing force in the direction of the arrow 9 from the rubber contact 13 and is positioned by the key top flange 6 and the key top holding boss 8, so that the play in the no-load state is prevented. .

FIG. 3 is an exploded perspective view of the control key device according to the embodiment of the present invention, in which the key top 2 shown in FIG. 2A is used. The top case 1 is provided with a cross-shaped opening 3, and a key top holding boss 4 is provided at a corner of the opening 3.

The key top 2 has a pressing operation portion 2a and a key top flange 6 provided on the lower surface of the pressing operation portion 2a.
A bulging portion 5 is provided at the intersection of the side surfaces of the pressing operation portion 2a. As described above, the bulging portion 5 is configured such that the key top holding boss 4 of the top case 1 and the black spot 11
The key top 2 is positioned in contact with the portion indicated by.

A rubber contact 13 is provided below the key top 2 via a spacer 12. Rubber contact 13
Are 4 corresponding to the four pressing operation sections 2a of the key top 2.
It has two contact points, closes the contact below the pressing operation section 2a pressed down by the player, and inputs the moving direction of the display character or the like of the game device. The rubber contact 13
Is positioned by the annular wall 10 of the top case 1.

FIG. 4 is an exploded perspective view of the control key device according to the embodiment of the present invention using the key top 2 of FIG. 2 (2). In the present embodiment, there is no bulging portion 5 at the intersection of the pressing operation portion 2a, and the key top holding boss 8 on the lower surface of the top case 1 is lengthened to directly contact the key top flange 6. In the present embodiment, the key top brim 6
In the no-load state, the key top 2 is positioned by contacting the key top pressing boss 8 at the portion indicated by the black spot 14.

FIG. 5 is a cross-sectional view of a portion of the control key device according to the embodiment of the present invention, which is indicated by arrows BB in FIG. However, for convenience of explanation, the portion where the key top holding boss 4 abuts on the bulging portion 5 of the key top 2 is indicated by a cross-section along arrow AA. In addition, FIG.
Indicates a no-load state in which none of the pressing operation units 2a of the key top 2 is pressed.

On the bottom surface of the key top 2, a contact pressing portion 20 is formed so as to protrude at a position corresponding to the cross-shaped pressing operation portion 2a. In addition, a protruding spherical surface 24 is integrally formed at the center of the bottom surface of the key top 2.

Further, a circular key top flange 6 having a diameter larger than the outer diameter of the cross-shaped pressing operation portion 2a is formed at a lower portion of the side surface of the key top 2. However, the key top flange 6 in the present embodiment does not contact the case edge 30 of the top case 1 in a no-load state. That is, the key top 2 is pressed upward by the elastic force of the rubber contact 13, but the bulging portion 5 of the key top 2 comes into contact with the key top holding boss 4 as shown in FIG. Key top flange 6 is placed on top case 1
Does not come into contact with the case edge 30.

In the no-load state, the key top 2
Is pushed upward by the elastic force of the skirt portion 28 of the rubber contact 13, and the convex spherical surface 2 at the bottom center of the key top 2 is
There is a minute gap between 4 and the spherical receiver 25 provided on the circuit board 29 as in the conventional case.

FIG. 5 (2) shows a load state in which one pressing operation portion 2a of the key top 2 is pressed down. When one of the pressing operation portions 2a is pressed, the key top 2 is pressed down against the elastic force of the skirt portion 28 holding the elastic movable portion 22 on the pressed side. At this time, the convex spherical surface 24 at the center of the bottom surface of the key top 2 comes into contact with the spherical receiver 25 by reducing the minute gap.

When the convex spherical surface 24 comes into contact with the spherical surface receiver 25, the key top 2 is inclined toward the pressed side with the spherical surface support 25 as the fulcrum 31. At this time, the key top flange 6 on the opposite side to the pressing direction of the key top 2 tilts while moving upward. However, the gap between the key top flange 6 and the case edge 30 of the top case 1 is sufficiently spaced by the above-described key top holding boss 4, so that the key top flange 6 and the top case 1 can be separated even under a load. The case edge 30 does not abut.

The contact pressing portion 2 of the pressed key top 2
0 further depresses the elastic movable part 22 and
Then, the movable contact portion 23 immediately below the contact is brought into contact with the electrode 27 on the circuit board 29 to close the circuit. On the other hand, the elastic movable portion 22 on the side opposite to the pressing direction is not pushed down, and unnecessary expansion and contraction is not applied to the rubber contact 13.

Then, when the key top 2 is released from the key top 2 and the pressing of the key top 2 is released, the movable contact portion 23 is moved to the electrode on the circuit board 29 by the elastic restoring force of the skirt portion 28 pressed by the contact pressing portion 20. The circuit is opened away from 27 and the key top 2 returns to its original position. In this way, operations in the up, down, left, and right directions can be performed.

As described above, in the load state in which one of the pressing operation portions 2a of the key top 2 is depressed, first, the key top 2 is pressed.
Is pressed down as a whole, and the convex spherical surface 24 at the center of the bottom surface of the key top 2 comes into contact with the spherical surface receiver 25, and then tilts toward the pressed-down operation portion 2a to close the rubber contact 13.

For this reason, the inclination angle of the key top 2 for closing the rubber contact 13 is reduced, and the operation stroke is also reduced. Therefore, the pressing force for operating the control key device can be reduced, and the operability is improved.

Next, when the key top 2 is pressed simultaneously in the up-down direction or the left-right direction, that is, when the key top 2 is leveled from directly above, the convex spherical surface 24 of the key top 2 comes into contact with the spherical receiver 25, Since the spherical receiver 25 functions as a stopper, the key top 2 cannot descend below it.

In this state, the key top 2 is kept horizontal without tilting in any direction.
Also, the movable contact portion 23 cannot contact the electrode 27. Therefore, the electrodes 27 in the vertical direction or the electrodes 27 in the horizontal direction on the circuit board 29 do not conduct simultaneously.

FIG. 6 shows a control key device according to another embodiment of the present invention, and is a cross-sectional view taken along the line BB in FIG. However, for convenience of explanation, the portion where the key top holding boss 8 abuts on the key top flange 6 is shown by a cross section along the arrow AA. FIG. 6A shows a no-load state in which none of the pressing operation units 2a of the key top 2 is pressed, and FIG. 6B shows a load state in which any one of the pressing operation units 2a is pressed. .

In this embodiment, as shown in FIG. 6A, the center of the bottom surface of the key top 2 is a concave spherical surface 40, and the sphere 41 held by the sphere holding portion 42 is provided on the circuit board 29. Having. And, in the no-load state, the concave spherical surface 4
The key top holding boss 8 and the rubber contact 13 are supported by the elastic force of the above-described key top holding boss 8 and the rubber contact 13 so as to generate a minute gap between the sphere 41 and the sphere 41.

In a load state, as shown in FIG. 6B, the concave spherical surface 40 at the center of the bottom surface of the key top 2 comes into contact with the spherical body 41 by reducing the minute gap. Then, the key top 2 is inclined to the side pressed with the sphere 41 as the fulcrum 43, and closes the rubber contact 13 on the pressed side.

Also in this embodiment, in the unloaded state and the loaded state, the key top flange 6 on the opposite side to the pressing direction is also provided.
Does not contact the case edge 30 of the top case 1. Further, in the load state, the elastic movable portion 22 on the side opposite to the pressing direction is not unnecessarily pushed down. Accordingly, it is possible to prevent the key top flange 6 from being damaged and to prevent the life of the rubber contact 13 from being shortened.

Although the specific embodiments have been described above, the embodiments do not limit the technical scope of the present invention.

[0054]

As described above, according to the present invention, when no pressing force is applied to the pressing operation portion, the projection of the pressing operation portion abuts on the locking portion of the case. It is positioned at rest. Further, when a pressing force is applied to the pressing operation portion, the central portion of the key top portion comes into contact with the fulcrum body and tilts with the fulcrum body as a fulcrum.

The projecting portion of the pressing operation portion has a shorter stroke at the time of operation than the peripheral portion and a smaller impact force from the case, so that the durability of the control key device for game operation can be improved. Further, the peripheral portion of the key top portion does not serve as a fulcrum of tilting, and damage to the peripheral portion of the key top portion can be prevented.

Further, since the central portion of the key top portion serves as a fulcrum of tilting, no pressing force is applied to rubber contacts other than the rubber contact corresponding to the pressed pressing operation portion. For this reason, the operation force applied to the key tops is reduced, the operability can be improved, and the frequency of expansion and contraction of the rubber contacts decreases, so that the life of the rubber contacts can be extended.

[Brief description of the drawings]

FIG. 1 is a plan view of a control key device according to an embodiment of the present invention.

FIG. 2 is a sectional view of the control key device according to the embodiment of the present invention taken along line AA in a no-load state.

FIG. 3 is an exploded perspective view (1) of the control key device according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view (2) of the control key device according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view (1) taken along line BB of the control key device according to the embodiment of the present invention.

FIG. 6 is a sectional view (2) taken along the line BB of the control key device according to the embodiment of the present invention.

FIG. 7 is a plan view of a conventional control key device.

FIG. 8 is a sectional view (1) taken along the line CC of the conventional control key device.

FIG. 9 is a sectional view (2) taken along the line CC of the conventional control key device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top case 2 Key top 2a Pressing operation part 3 Opening 4, 8 Key top holding boss 5 Inflated part 6 Key top flange 13 Rubber contact 20 Contact pressing part 22 Elastic movable part 23 Movable contact part 24 Convex spherical surface 25 Spherical receiver 27 Electrode 28 Hakama part 29 Circuit board 30 Case edge 31, 43 Support point 40 Concave sphere 41 Sphere 42 Sphere holding part

Claims (7)

[Claims] 1. A key top having four pressing operation portions arranged symmetrically with respect to the center thereof to form a cross shape and having a projection between adjacent pressing operation portions, and exposing the pressing operation portion. An elastic movable including a case having an opening and a locking portion at a position corresponding to the protrusion, and a movable contact portion movably supported by elastic members arranged corresponding to the pressing operation portions, respectively. The key top portion is configured such that, when no pressing force is applied to the pressing operation portion, the protrusion portion is held in contact with the locking portion by the elastic force of the elastic movable portion. A control key device for game operation characterized by the above-mentioned. 2. A key top having four pressing operation portions arranged symmetrically with respect to the center thereof to form a cross shape and having a flange portion between adjacent pressing operation portions, and exposing the pressing operation portions. An elastic movable including a case having an opening and a locking portion at a position corresponding to the flange portion, and a movable contact portion movably supported by elastic members arranged corresponding to the pressing operation portions, respectively. The key top portion is configured such that, when no pressing force is applied to the pressing operation portion, the collar portion is held in contact with the locking portion by the elastic force of the elastic movable portion. A control key device for game operation characterized by the above-mentioned. 3. The substrate according to claim 1, further comprising: a substrate having a pair of electrode portions disposed on straight lines orthogonal to each other at positions symmetrical with respect to the orthogonal point; A fulcrum disposed on the substrate facing the central portion, wherein the key-top portion is configured to perform the pressing operation when no pressing force is applied to the pressing operation portion. A central portion provided on a bottom surface portion where the portions are orthogonal to each other and the fulcrum body are held so as to be spaced apart from each other by a small distance, and in response to a pressing force applied to the pressing operation portion, the central portion is A contact key that contacts the fulcrum body and tilts with the fulcrum body as a fulcrum, and the movable contact portion that is lowered conducts the corresponding electrode portion. 4. Four pressing operation portions which are symmetrically arranged with respect to the center thereof to form a cross, a projection provided between adjacent pressing operation portions, and a bottom portion where said pressing operation portions are orthogonal to each other. A case having a key top portion having a central portion provided, an opening for exposing the pressing operation portion, and a locking portion provided at a position corresponding to the projection portion; A substrate having a pair of electrode portions disposed symmetrically with respect to the orthogonal point; and a substrate located at an intermediate portion between the pair of electrode portions, facing the central portion, and disposed on the substrate. A fulcrum member, and an elastic movable portion having a movable contact portion movably supported by an elastic member disposed corresponding to each of the electrode portions, wherein the key top portion is provided on the pressing operation portion. When no pressing force is applied, the elastic movable The projection portion abuts on the locking portion due to the elastic force of, and the central portion and the fulcrum body are held so as to be separated from each other with a small interval, and the pressing force applied to the pressing operation portion is In response, the central portion comes into contact with the fulcrum body and tilts with the fulcrum body as a fulcrum, and the movable contact portion that has been lowered makes the corresponding electrode portion conductive, and the elastic movable when the pressing force is released A control key device for game operation, characterized in that it is configured to be urged upward by the elastic force of the portion and to return to a position where the protrusion comes into contact with the locking portion. 5. Four pressing operation portions which are arranged symmetrically with respect to the center and form a cross shape, a flange portion provided between adjacent pressing operation portions, and a bottom portion where said pressing operation portions are orthogonal to each other. A case having a key top portion having a central portion provided, an opening for exposing the pressing operation portion, and a locking portion provided at a position corresponding to the flange portion; A substrate having a pair of electrode portions disposed symmetrically with respect to the orthogonal point; and a substrate located at an intermediate portion between the pair of electrode portions, facing the central portion, and disposed on the substrate. A fulcrum member, and an elastic movable portion having a movable contact portion movably supported by an elastic member disposed corresponding to each of the electrode portions, wherein the key top portion is provided on the pressing operation portion. When no pressing force is applied, the elastic movable The flange portion abuts on the locking portion due to the elastic force of, and the central portion and the fulcrum body are held so as to be separated from each other with a small interval, and the pressing force applied to the pressing operation portion is In response, the central portion comes into contact with the fulcrum body and tilts with the fulcrum body as a fulcrum, and the movable contact portion that has been lowered makes the corresponding electrode portion conductive, and the elastic movable when the pressing force is released A control key device for game operation, characterized in that the control portion is configured to be urged upward by elastic force of the portion to return to a position where the flange portion comes into contact with the locking portion. 6. The control key device for game operation according to claim 3, wherein the central portion is a convex spherical surface. 7. The control key device for game operation according to claim 3, wherein said fulcrum body is a sphere.