KR20040076559A - Switch push method and switch - Google Patents

Abstract

In the switch using steel balls, the number of steel balls is set to three, and the latter two pieces are pressed to one steel ball of the former, so that the pressed state is parallel and stable switch operation is provided. The switch is formed of an insulating housing having a pair of common contacts and a contact accommodating recess arranged at a switching center at a substantially central position, the size of the switch being connected to and stored in a pair of common contacts, The front end of the communication hole, which is mounted from the upper part of the movable contact plate formed in a disk shape having the center point as the top point, and the communication hole having the upper part of the movable contact plate upward through the movable contact plate disposed in the insulating housing. A partition plate having a guide shade provided to protrude to be inclined, and a steel ball receiving hole having a size for accommodating first, second and third steel balls mounted on the partition plate, and the front inner wall of the steel ball storage hole; And a kistem having a guide shade guide portion having an inclined surface formed at the same inclination angle as the inclined surface of the guide shade portion. The second steel ball guide hole is held in contact with the inclined surface of the guide sunshade, while the lower position is brought into contact with the movable contact plate while being pressed by the third handle, And pressing the third steel balls to guide the first steel balls fitted to the second and third steel balls downward along the inclined surface of the guide shade, and inverting them by pressing the top surface of the movable contact plate. The bottom face is in contact with the switching contact.

Description

Switch push method and switch

The present invention relates to a switch-pressing method and a switch, and more particularly, two or more spheres which switch operation with a switch of several millimeters used in a mobile phone or the like, and the sphere in the front row is preferably Refers to a switch pressing method and a switch which aims to stabilize the switch operation by guiding one sphere and the first sphere into two spheres in the next row.

The switch in the prior art has been proposed by the same applicant, and it is performed by using two steel balls by performing a switch operation. The configuration is as shown in Figs. 9 and 10, and the center is recessed. An insulating housing 111 having a contact receiving recess 112 having a pair of common contacts 113a and 113b and a switching contact 114 at a central position therein; Only one of the first and second movable contact plates 121a and 121b mounted on the concave concave part 112 to contact a pair of common contacts 113a and 113b and one first steel ball 131a are passed. A partition plate 122 having a through hole 123 having a size to be made larger, an actuator 131 made up of two first and second steel balls 131a and 131b, and a first steel ball 131a. A cam portion 141 having a cam surface 143 formed in a tapered shape on one side thereof in contact with each other and a cam portion 141 for two first and second steel balls 131a and 131b. Made of a kiss system 151 and, kiss system 151 and a cover unit 161 for covering from the upper cam 141 is pressed to the face.

The insulating housing 111 is formed in the shape of a rectangular parallelepiped by an insulating synthetic resin, and a contact receiving recess 112 is formed in the center thereof. The contact accommodating recess 112 has a cylindrical shape whose cross section is slightly larger than the outline of the first and second movable contact plates 121a and 121b, and loosens the first and second movable contact plates 121a and 121b. The size is acceptable inside.

In addition, at the bottom of the contact receiving recess 112, common contacts 113a and 113b are provided at the opposite position by insert formation, and at the central position connecting the common contacts 113a and 113b, The switching contact 114 formed by exposing is provided.

The first and second movable contact plates 121a and 121b may be mounted in a circular shape so as to allow the metal plate having elasticity to contact the common contacts 113a and 113b of the contact accommodating part 112 to be fitted with a margin. It is formed, and its center is curved upward from the circumference so as to form the top of a gentle convex curved surface, and is formed in a disk shape.

The partition plate 122 is mounted on the step portion 115 formed around the contact accommodation recess 112 and attached to the insulating housing 111. The partition plate 122 is formed of the contact accommodation recess 112 and the step 115. A metal plate is formed in a shape that conforms to the contour, and in the center thereof, a circular through hole 123 is drilled to allow the top portions of the first and second movable contact plates 121a and 121b to pass upward. The through hole 123 is formed slightly larger than the diameter of the first steel balls 131a in order to guide the first steel balls 131a constituting the actuator 131 to pass therethrough.

The actuator 131 is formed of two first and second steel balls 131a and 131b, and passes the first steel ball 131a in front of the through hole 123 through the rear second steel ball 131b. It is configured to press down substantially.

The cam portion 141 is formed in a T-shape, the protrusion 144 protrudes forward, and the legs 152a and 152b, which are two legs of the kiss system 151 described later, do not interfere with the protrusion 144. It is a shape which enters into both sides. In addition, the front surface of the protrusion 144 is provided with a concave rear guide groove 142 that is slightly wider than the first steel ball 131a from the front, and the top surface therein is a cam surface inclined downward toward the rear ( 143).

The kistem 151 is integrally provided with two legs (or crossbars) 152a and 152b which are provided to protrude toward the rear and the thick operation knob 154 of the front end, and insulate the operation knob 154. It protrudes from the cut-out window hole 111a of the front surface of the housing 111, and the whole back is made to fit between the partition plate 122 and the cover 161 so that it may leave. As a result, the key system 151 is slidable horizontally with respect to the insulating housing 111, and the leg parts 152a and 152b face the inner walls 111b and laterally in the space of the insulating housing 111. 111c), reciprocating in the front-rear direction is made possible. In addition, the leg portions 152a and 152b abut on the insulating housing 111 around the window hole 111a so that the kistem 151 does not escape forward.

The cover part 161 is formed of a metal member, and a pair of L-shaped locking pieces 162a and 162b are successively installed on the front and rear end surfaces thereof, and each L-shaped locking pieces 162a and 162b are insulated from the housing. Hang on the locking projection provided to protrude on the corresponding portion of the (111) to be fixed.

By arranging such components, as shown in FIGS. 11 and 12, the cam engaging portion 153 of the kistem 151, the rear guide groove 142 of the cam portion 141, and the lid portion 161 are provided. And a guide passage surrounded by the partition plate 122, and within the guide passage, the first and second steel balls 131a and 131b constituting the actuator 131 are movably received along the guide passage. .

One end of the guide passage passes through the top of the first movable contact plate 121a via the through hole 123 of the partition plate 122, so that a part of the first steel ball 131a is part of the through hole 123. Into the upper surface of the first movable contact plate (121a) abuts.

In the switch configured as described above, since the first and second movable contact plates 121a and 121b are curved in the shape of a top in the standby state as shown in FIG. 12 in which the operating force is not applied to the kistem 151, the top is curved upward. The switching contact 114 and the common contacts 131a and 131b are open and separated.

In this state, when the keystone 151 is pushed back while holding the operation knob 154, as shown in FIG. 13, the displacement of the keystone 151 to the rear is transmitted to the second steel ball 131b. The second steel ball 131b presses the first steel ball 131a. Since the first steel ball 131a abuts against the cam surface 143 which is an inclined surface, the top end of the first movable contact plate 121a is pushed down to thereby lower the displacement of the kistem 151. Is converted into a vertical displacement that pushes down the tops of the first and second movable contact plates 121a and 121b.

At this time, since the first steel ball 131a is a part of the spherical surface, the first steel ball 131a is in contact with the top of the second steel ball 131b, the cam surface 143, and the first movable contact plate 121a. In contact with each other, no large friction force occurs between them. In addition, the kistem 151 guided in the horizontal direction by being inserted into the partition plate 122 and the cover portion 161 abuts on the spherical surface of the second steel ball 131b by being perpendicularly contacted with each other. The component of the vertical direction component is not received from 131a, and the sliding friction with the partition plate 122 or the cover part 161 does not increase, and it can be pressed in with light operation force.

When the top portion of the first movable contact plate 121a is pushed down by a predetermined value or more, the first and second movable contact plates 121a and 121b are inverted about the top portion, and the second movable contact plate 121b is rotated. By contacting the top of the bottom of the switch contact point 114, the switch contact point 114 and the common contacts 113a and 113b are connected through the second movable contact plate 121b, and the switch contact point 114 Common contacts 113a and 113b are conductive.

In addition, when the first and second movable contact plates 121a and 121b are reversed, the displacement in the vertical direction rapidly increases with respect to a slight increase in the pressing force, so that the keystone is a touch to change the apparent pressing force. It is transmitted to the operation knob 154 of 151. The change in the displacement of the first and second movable contact plates 121a and 121b at the time of reversal is also transmitted to the kistem 151 through the first steel balls 131a and the second steel balls 131b, The top of the first movable contact plate 121a in contact with the first steel ball 131a, the cam surface 143, the cover part 161, the kisstem 151, and the first steel ball 131a and the second steel ball 131b. Since both of them are in rolling contact or point contact, the touch does not decay due to the friction force generated at these contact portions, so that the operator can reliably sense the inversion of the first and second movable contact plates 121a and 121b. It can be recognized that the switch circuit is closed.

After that, when the pressing operation of the kistem 151 is removed, the first and second movable contact plates 121a and 121b are inverted back to their original shapes by their elasticity, and the kistem is also shown in FIG. 12. Return to the state. Accordingly, the second movable contact plate 121b and the switching contact point 114 are separated from each other, and the switching contact point 114 and the common contacts 113a and 113b are insulated to open the switch circuit.

Even when the first and second movable contact plates 121a and 121b are inverted and returned, the elasticity for returning upward in the vertical direction is controlled by the first and second steel balls 131a and 131b. Although transmitted to 151, each contact portion is contacted in rolling or point contact, so that it is not attenuated by these frictional forces, but is transmitted to the key system as a return force for returning forward.

Patent Document 1: Japanese Patent Application Laid-Open No. 2000-1645057 (Fig. 3 page 2)

Patent Document 2: Japanese Patent Application Laid-Open No. 2002-052191 (Fig. 7 to 13 Fig. 1)

However, since the switch described in the prior art constitutes an actuator for pressing a steel ball in front of one steel ball using two steel balls for contact operation, since the pressing direction is pressed in series, the path is There is a problem of unstable because it is not done straight.

In addition, since the two steel balls are used in series, when the dimensional precision of the groove (for example, the through hole 123) of the guide passage for guiding the two steel balls becomes strictly the width of the steel ball, the steel ball moves. If this becomes dull and loosen the dimensional accuracy of the grooves for guiding the steel balls, there is a problem that the movement of the steel balls in series becomes unstable and the relationship between the groove width dimensions and the steel balls becomes quite difficult.

Therefore, in the switch contact structure by the actuator using steel balls, there exists a subject which must solve the technique and structure which pushes steel balls stably.

1 is an exploded perspective view of a switch according to the present invention;

2 is a plan view of the switch of FIG.

3 is a side view of the switch of FIG.

4 is a plan view of the cover portion of the switch of Figure 1 removed;

FIG. 5 is a plan view when the kistem is pressed in a state in which the cover of the switch of FIG. 1 is removed;

6 is a cross-sectional view taken along the line A-A in the plan view shown in FIG.

7 is a cross-sectional view taken along the line B-B in the plan view shown in FIG.

8 is a cross-sectional view showing the movement of the steel ball when the keystone is pressed in the switch of FIG.

9 is an exploded perspective view of a switch in the prior art,

10 is an overall perspective view of a switch in the prior art,

11 is a plan view of the state in which the lid portion is removed in the prior art,

12 is a cross-sectional view taken along the line D-D in FIG. 11;

FIG. 13 is a cross-sectional view of a state in which a key system is pressed in the sectional view taken along the line D-D of FIG.

* Explanation of symbols for main parts of the drawings

11: insulation housing 12: contact receiving hole

13a, 13b: common contact 14: switching contact

21a, 21b: movable contact plate 30: guide shade

31: steel ball guide portion 32: actuator

33, 34, 35: Steel ball 41: Kistem

42: steel ball guide hole 47: operation handle

In order to solve the above problems, the switch pressing method and the switch according to the present invention have the configuration shown below.

(1) The switch pressing method is a switch pressing method of a switch in which the direction of displacement of the kistem and the displacement of the movable contact plate are different, wherein an actuator linked to the key stem is a switch. It consists of a sphere in contact with the movable contact plate of, and a plurality of spheres arranged around the sphere, when operating the key system, the sphere in contact with the movable contact plate of the switch and the plurality of spheres are in contact with, It is characterized by guiding the moving direction of the sphere in contact with the movable contact plate.

(2) When the key system is released, the sphere contacting the movable contact plate of the switch returns to the initial state before operating the switch due to the reaction force of the movable contact plate. The switch pressing method described.

(3) The switch pressing method according to (1), wherein the sphere in contact with the movable contact plate and the plurality of spheres are steel balls.

(4) The switch pressing method is a switch pressing method of a switch in which the direction of displacement of the kistem and the direction of displacement of the movable contact plate are different, wherein an actuator made of spheres interlocking with the key system is in contact with three spheres. Combining the two spheres of the three spheres combined so as to be in contact with each other, it is characterized in that the remaining one sphere is inverted by applying a force to the movable contact plate while the other sphere is sandwiched between the two spheres. .

(5) In the case of releasing the key system, the sphere in contact with the movable contact plate of the switch is returned to the initial state before operating the switch by the reaction force of the movable contact plate. The switch pressing method described.

(6) The switch pressing method according to (4), wherein the three spheres are steel balls.

(7) The switch comprises: an insulating housing having a pair of common contacts and a contact accommodating recess disposed at a switching center at an almost center position; A movable contact plate which is formed in a size that can be accommodated by being connected to the pair of common contacts and is inverted by force; A partition having a guide shade portion mounted from an upper portion of the movable contact plate disposed in the insulated housing and provided as a communication hole allowing the top portion of the movable contact plate to pass upward, and inclined to protrude from the front end of the communication hole. plate; And a sphere storage hole having a size for accommodating the first, second and third spheres mounted on the partition plate, wherein the front inner wall of the sphere storage hole has an inclined surface formed at the same inclination angle as the inclined surface of the guide shade. And a kistem having a guide awning guide, the first sphere being sandwiched by the second and third spheres, and in contact with the inclined surface of the guide awning; While holding in the abutting state and pressing with the operation knob of the keystone, the first and second spheres are inserted into the second and third spheres by pressing the second and third spheres through the steel ball guide holes, thereby guiding the guide shade portion. It guides downward along an inclined surface, and inverts by pressing the top surface of the said movable contact plate, and makes the bottom surface of the said movable contact plate contact the said switching contact point. It is to be done.

(8) The switch according to (7), wherein the movable contact plate is a plurality of sheets stacked together.

(9) When the first sphere and the second and third spheres are formed of spheres of the same shape, the relationship is the horizontal center position of the first sphere at a position deviated from the horizontal center position of the second and third spheres. The switch as described in (7) characterized by arrange | positioning so that there exists.

(10) The switch according to (9), wherein the horizontal center position of the first sphere is a lower position with respect to the horizontal center position of the second and third spheres.

(11) The switch according to (7), wherein the first, second, and third spheres are steel balls.

Next, a switch pressing method and an embodiment of a switch according to the present invention will be described with reference to the drawings.

A switch capable of implementing the switch pressing method according to the present invention, as shown in Figs. 1, 2 and 3, the center is formed in a recessed shape, a pair of common contacts (13a, 13b) therein And a pair of common contacts 13a and 13b in the insulating housing 11 having the contact receiving recess 12 disposed at the center position toward the switching contact 14, and the contact receiving recess 12; It is mounted so as to contact the first and second movable contact plates 21a, 21b mounted in contact with each other and different from the direction of displacement of the key system 41, and a large communication passing through the first steel ball 33, which is the first ball ( An actuator 32 consisting of a partition plate 25 having a hole 29 and three first, second and third steel balls 33, 34 and 35, which are three first, second and third balls. ) And the three first, second and third steel balls 33, 34, 35 can be moved integrally, and the direction of displacement of the first and second movable contact plates 21a, 21b From the other custem 41 and the top of the cystem 41 It is composed of a cover portion (51).

Here, although the 1st, 2nd, and 3rd ball | bs are formed from the steel ball of the same shape made of metal, it is not limited to the thing made of metal, For example, it may be resin, and may be formed from glass, ceramics, or carbon.

In addition, the first steel balls 33 are steel balls in contact with the movable contact plates 21a and 21b of the switch, and the second and third steel balls 34 and 35 are in contact with the movable contact plates 21a and 21b. A plurality of steel balls arranged around the steel ball. Further, in the embodiment, the steel balls in contact with the movable contact plates 21a and 21b are one of the first steel balls 33, but the present invention is not limited thereto.

The insulating housing 11 is formed in the shape of a rectangular parallelepiped by an insulating synthetic resin, and a contact receiving recess 12 is formed in the center thereof. The cross section of the contact receiving concave portion 12 is a cylindrical shape slightly larger than the outline of the first and second movable contact plates 21a and 21b, and thus the first and second movable contact plates 21a and 21b. Loosely sized to accommodate it.

In addition, the contact receiving recess 12 has a structure in which the partition plate 25 can be accommodated by forming a step portion 17 at a substantially central position, and has a cutout portion 18 cut out on one side. By the cutout 18, the joining directions of the partition plate 25 and the kisstem 41 are guided.

A pair of common contacts 13a and 13b disposed at the bottom of the contact receiving recess 12 are continuously provided on the printed board, and the printed board is formed to protrude out of the insulating housing 11. It is formed integrally with the common terminals 15a and 15b.

The switching contact 14 becomes the bottom of the contact receiving recess 12, and is continuously installed on the printed board insulated at the lower position of the printed board forming the common contacts 13a and 13b. The printed circuit board is exposed upward, and the printed board protrudes out of the insulating housing 11 and integrally with the switching terminals 16a and 16b formed in alignment with the common terminals 15a and 15b. Formed.

The first and second movable contact plates 21a and 21b are fitted with a flexible metal plate in contact with a pair of common contacts 13a and 13b of the contact accommodating portion 12 so that they can fit comfortably. It is formed in a circular shape so that its center is curved upward from the circumference so as to be the top of a gentle convex curved surface, and formed into a disk shape.

The partition plate 25 is mounted on the step portion 17 formed at an almost intermediate position of the contact accommodation recess 12 and attached to the insulating housing 11. The contact accommodation recess 12 and the step 17 And having a brim portion 26 guided by the cutout portion 18 by punching a metal plate into a shape conforming to the contour of the upper and lower portions of the first movable contact plate 21a. The communication hole 29 is formed in such a size that the first steel ball 33 can be fitted with ease so that the first steel ball 33 continues to pass, and the second and third steel balls 34 and 35 are connected to the communication hole 29. When mounted side by side, the steel balls are formed in a semicircular guide hole (28) in a size that allows the steel balls to gather in the direction of each other, and as a whole constitutes a steel ball guide portion 31 formed by drilling holes in a dharma shape as a whole It is.

Moreover, the structure provided with the guide shading part 30 which has the inclination surface 30a inclined in the forward direction which guides the 1st steel ball 33 in the edge part inside the communication hole 29 of this steel ball guide part 31. FIG. It is.

Although the communication hole 29 is formed in the size which penetrates the 1st steel ball 33 in embodiment, it is not limited to this, What is necessary is just to make it the size which makes the top part of a movable contact plate pass upward. However, as in the embodiment, it is preferable that the diameter of the size of the first steel ball 33 can be easily fitted so as to be movable upward so as to be movable.

The actuator 32 is formed of three first, second and third steel balls 33, 34 and 35, and the first and second steel balls 33 of the first row are gathered in the second row. It is pushed forward while being sandwiched between the fields (34, 35).

As such, the first steel balls 33 are pressed in the left and right directions with respect to the advancing direction by pressing the first steel balls 33 in the state where the second and third steel balls 34 and 35 are interposed. Since it is possible to always hold between the second and third steel balls 34 and 35 without being shaken, it is possible to guide in a stable state without the need for guiding guide grooves such as grooves.

The kistem 41 is mounted on an upper portion of the partition plate 25 and formed to be slippery, and at the center thereof, accommodates the first, second, and third steel balls 33, 34, and 35. It is provided with the dharma-shaped steel ball guide hole 42 which is a spherical storage hole, and is provided with the thick operation knob 47 integrally through the front part 47a at the front end.

The steel ball guide hole 42 has a dharma-shaped steel ball engaging hole 43 of a size that can accommodate the second and third steel balls 34 and 35 side by side on the front side of the operation handle 47, A steel ball storage hole 48 having a size that allows a first steel ball 33 narrower than the steel ball engaging hole 43 to be inserted and passed is provided in succession, and an inner wall of the steel ball storage hole 48 is partitioned. It has a structure provided with the guide shade guide portion 44 formed to have the same slope as the guide shade portion 30 of the plate (25).

Moreover, the upper surface of this kistem 41 is provided with the projection part 45 which contact | connects the back surface of the cover part 51, and the linear projection part 46, and is shown in the bottom surface of the kistem 41 which is not shown in figure. It has a structure provided with the protrusion part which abuts on the partition plate 25 and guides.

The cover part 51 is formed of a metal member, and is provided with a pair of L-shaped locking pieces 51a and 51b respectively connected to the front and rear end surfaces thereof, and insulates each of the L-shaped locking pieces 51a and 51b. 11) Engage and fix the locking projection provided on the corresponding part of 11).

In the switch having such a configuration, first, the two first and second movable contact plates 21a and 21b are mounted on the contact receiving recess 12 of the insulating housing 11 in an overlapping state. The rear end portion of the second movable contact plate 21b is mounted in electrical contact with the pair of common contacts 13a and 13b.

Then, the partition plate 25 is placed on the step portion 17 on the upper portion thereof, and the three first, second and third steel balls 33, 34, 35 are placed on the upper portion thereof. ) To fit. In this way, the second and third steel balls 34 and 35 enter the guide hole 28 and are collected in the direction in which they are in contact with each other. The first steel balls 33 are in a state of being pinched at the collected central position, and are guided downward by the guide shade 30 from the upper direction. Therefore, since the first steel balls 33 are not inserted into the second and third steel balls 34 and 35 while the grooves for guiding and the like are unnecessary, the positioning thereof can be extremely precisely and accurately guided. .

In addition, the first and second and third steel balls 33, 34 and 35 are provided with the steel ball guide holes 42 by mounting the kisstem 41 to accommodate the second and third steel balls 34 and 35. FIG. ), And by covering the lid 51 from the top, the second and third steel balls 34, 35 are lifted into the steel ball guide hole 42, it does not stick out.

In the switch assembled in this way, the direction of displacement of the kistem 41 and the displacement directions of the first and second movable contact plates 21a and 21b become different, and the actuator interlocks with the kistem 41. Is composed of a first steel ball 33 and a plurality of first and second steel balls (34, 35) disposed around the first steel ball 33 in contact with the first movable contact plate (21a), The first steel balls 33 are in contact with the movable contact plate 21a and the plurality of second and third steel balls 34 and 35 are in contact with each other, so that the first steel balls 33 are in contact with the first movable contact plate 21a. 33) to guide the direction of movement.

4, 6, and 7, when the switch operation is not performed, the first steel ball 33 is the center where the second and third steel balls 34 and 35 are gathered. It is caught in the position and is placed in contact with the inclined surface 30a of the guide shade 30 (see FIGS. 6 and 7), and is inserted into the communication hole 29 to pass through the first movable contact plate 21a. It is arranged in contact with the upper top surface. That is, the first steel ball 33 is in the rear direction point contact with the second and third steel balls 34, 35, the front slightly upward position is in point contact with the inclined surface (30a) of the guide shade 30 , The lower direction is in point contact with the top surface of the first movable contact plate 21a, so as to remain in point contact with the so-called three points, the second and third steel balls as the recessed portion of the through hole 29 The horizontal center position is lower than the position (34, 35).

That is, the relationship between the first steel balls 33 and the second and third steel balls 34, 35 is, as shown in Figs. 6 and 7, the horizontal center positions P1, The horizontal center position Q of the first steel ball 33 exists at a position deviated from P2), and the horizontal center position Q of the first steel ball 33 is formed of the second and third steel balls 34 and 35. With respect to the horizontal center positions P1 and P2, the horizontal center position Q of the first steel ball 33 is disposed in the lower position.

In this way, the horizontal center position is shifted (in this embodiment, the horizontal center position of the first steel balls 33 is shifted to a lower position than the second and third steel balls 34 and 35), thereby making the second system a second. When the third steel balls 34 and 35 are pressed, the first steel balls 33 are necessarily pressed downward.

In this state, when the operation knob 47 of the kistem 41 is pressed, the kistem 41 itself slides on the partition plate 25 as shown in FIGS. 5 and 8, and the guide shade portion ( The first steel balls 33, which are in contact with 30, are pressed by the second and third steel balls 34 and 35 to be guided to the inclined surface 30a (see FIG. 8) of the guide shade 30 to move downward. Then, the first steel ball 33 moving in the lower direction, by pressing the top end of the curved first and second movable contact plates 21a, 21b, reverse bending, the back of the second movable contact plate 21b The side contacts the switching contact 14 to conduct. Then, the common contacts 13a and 13b and the switching contact 14 conduct through the second movable contact plate 21b, leading to the legs. At that time, when the first and second movable contact plates 21a and 21b are inverted, a click is generated and transmitted to the place where the manipulation knob 47 is pressed.

Thus, as shown in FIGS. 6, 7 and 8, the displacement of the kistem 41 to the rear pushes down the tops of the first and second movable contact plates 21a and 21b to make vertical displacement. Is converted to.

In this state, when the force holding the operation knob of the key system 41 is released, the contact with the switching contact 14 is separated by the reverse force of the first and second movable contact plates 21a and 21b. In addition, the first steel ball 33 is guided to the inclined surface (30a) of the guide shade 30 and pressed upwards, the guide shade 30 in the state sandwiched between the second and third steel balls (34, 35) And a state in contact with the top surface of the first movable contact plate 21a at the same time as contacting the inclined surface 30a.

That is, when the keystone 41 is released, the first steel ball 33 which contacts the first movable contact plate 21 switches the switch by the reaction force of the first and second movable contact plates 21a and 21b. Return to the initial state before operation.

Thus, using the three first, second and third steel balls 33, 34 and 35, the first steel ball 33 in the front row once is used as the two second and third steel balls in the next row ( By pressing in the state sandwiched between 34 and 35, it is possible to perform the switch operation by pressing the first steel ball 33 in the foremost row without providing a separate guide means.

In the embodiment, the horizontal center position of the first steel balls 33 is arranged to be lower than the horizontal center positions of the second and third steel balls 34 and 35, but the horizontal center of the first steel balls 33 is positioned. It is also possible to arrange so that a position becomes an upper position. In this case, the switch operation is performed in the upward direction with respect to the pressing of the key system.

In this way, a configuration in which the switch operation is performed in the upward direction with respect to the cisterm is added, and when it is added to the switch operation in the downward direction described in the embodiment, the two steel balls are pressed as the two steel balls. By preparing the steel balls for the operation and the steel balls for the switch operation in the downward direction, and pressing these two steel balls with the two steel balls at the back, it is possible to simultaneously perform the up and down switch operation. Of course, the number of these steel balls is not limited.

In addition, although the embodiment used three steel balls in total, it is not limited to this, for example, to prepare one steel ball in the front row, two steel balls in the next row, and three steel balls in the next row. It may be formed in a mold and configured to press the steel balls in the front row.

In addition, although an Example demonstrated that the diameter of three spheres is the same, it is not limited to this, Of course, you may use spheres from which diameter differs.

In addition, although three spheres were demonstrated on the premise of the thing of the same material, it is not limited to this, Of course, you may use spheres from which a material differs.

As described above, the switch according to the present invention can be guided in the advancing direction while being pinched by the plurality of spheres by guiding the sphere in the state of being sandwiched in the plurality of spheres, requiring a separate guide groove or the like. Since it is possible to guide the sphere in the front row accurately without doing so, there is an effect that the structure can be guided accurately even though the structure is simplified and downsized.

Further, by using a plurality of spheres as steel balls, so-called tack feeling can be accurately guided without attenuation.

Claims (11)

In the switch-pressing method of a switch in which the direction of displacement of the cisterm and the direction of displacement of the movable contact plate are different, An actuator linked to the key system includes a sphere in contact with the movable contact plate of the switch, and a plurality of spheres arranged around the sphere, and in contact with the movable contact plate of the switch when the kiss system is operated. And a sphere and the plurality of spheres contact each other to guide the movement direction of the sphere in contact with the movable contact plate of the switch. The switch according to claim 1, wherein when the key is released, the sphere contacting the movable contact plate of the switch returns to the initial state before the switch is operated by the reaction force of the movable contact plate. Pressing method. The switch pressing method according to claim 1, wherein the sphere in contact with the movable contact plate and the plurality of spheres are steel balls. In the switch-pressing method of a switch in which the direction of displacement of the cisterm and the direction of displacement of the movable contact plate are different, An actuator composed of spheres interlocking with the custem may be combined so as to contact three spheres, and by pressing two spheres out of three spheres combined so as to contact the other spheres, the remaining one sphere is inserted into the two spheres. The switch pressing method characterized by the inversion by applying a force to the movable contact plate in the state. The switch press according to claim 4, wherein when the key is released, the sphere contacting the movable contact plate of the switch returns to the initial state before the switch is operated by the reaction force of the movable contact plate. Way. The method of claim 4, wherein the three spheres are steel balls. An insulating housing having a pair of common contacts and a contact accommodating recess disposed toward the switching contact at a substantially central position; A movable contact plate which is formed in a size that can be accommodated by being connected to the pair of common contacts and is inverted by force; A partition having a guide shade portion mounted from an upper portion of the movable contact plate disposed in the insulating housing and provided as a communication hole allowing the top portion of the movable contact plate to pass upward, and protruding by inclining the front end of the communication hole. plate; And A guide having an old storage hole having a size for accommodating the first, second and third holes mounted on the partition plate, the front inner wall of the old storage hole having an inclined surface formed at the same inclination angle as that of the inclined surface of the guide shade; It includes a kistem with a sunshade guide, Holding the first sphere with the second and third spheres in contact with the inclined surface of the guide shade, and holding the lower position in contact with the movable contact plate, When pressed with the operation knob of the kistem, by pressing the second and third spheres with a steel ball guide hole, the first sphere, which is fitted to the second and third spheres, is guided downward along the inclined surface of the guide shade, And a bottom surface of the movable contact plate is brought into contact with the switching contact by pressing the top surface of the movable contact plate. The switch according to claim 7, wherein the movable contact plate has a plurality of sheets stacked on top of each other. 8. The method of claim 7, wherein when the first sphere and the second and third spheres are formed of spheres of the same shape, the relationship of the first sphere to a position deviated from the horizontal center position of the second and third spheres. And a switch arranged so that a horizontal center position exists. The switch according to claim 9, wherein the horizontal center position of the first sphere is a lower position with respect to the horizontal center position of the second and third spheres. 8. The switch of claim 7, wherein the first, second and third spheres are steel balls.