JPH07320597A - Switchgear - Google Patents

Abstract

PURPOSE:To provide a switchgear in which the cursor of a display can be moved in its free direction by using a ring-shaped resistor in a one-end make- and-break contact part for forming the switchgear so that the switchgear can obtain different detection signals even if it is pressed from any direction of a press surface. CONSTITUTION:A switchgear is constructed in such a manner that respective two mutually facing contacts 4, 5 set in a condition spaced from each other in normal time may be brought into contact with each other by pressing the press surface 3 of a key top supported by a post part 2 erected on a substrate 1 so as to incline the press surface 3. The switchgear has the movable contacts 4 approaching to the side of the substrate 1 when the press surface 3 is inclined with the post part 2 as a fulcrum by pressing the press surface 3, and the stationary contacts 5 on the side of the substrate 1 having such positional relation to the movable contacts 4 as being capable of being brought into respective contact with the movable contacts 4. Either the movable contact 4 or the stationary contact 5 is formed in a ring-shaped resistor having an open part in at least one part thereof, with the other formed in a ring-shaped electric conductor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing device such as a key switch used for an operation panel of an office automation equipment or the like, and particularly to a cursor or the like on a display by accurately detecting the pressing direction of a key top (pressing surface). The present invention relates to the one that makes it possible to control the moving direction of the steplessly.

[0002]

2. Description of the Related Art O for computers, word processors, etc.
Among various key switches (opening / closing devices) provided in the A-equipment, remote control devices for various electronic devices, etc., the pressing direction of a key top (pressing surface) of one key, such as a cursor key, is set in a plurality of directions, for example, up and down. There is a structure in which the cursor or the like on the display moves back and forth in the same direction when the pressing surface is inclined and pushed in each direction. 10A and 10B are a front view and a plan view showing a configuration of a conventional opening / closing device (key switch) 100. This opening / closing device has a pressing surface (key top) 1
The center position of the bottom of 03 is fixedly supported by the upper end of a column 102 extending from the printed circuit board 101, and the column 102 itself is made of a flexible material. Pressing protrusions 103a are fixed to the peripheral portion of the lower surface of the pressing surface 103 at intervals of 90 degrees. The movable contact 104 and the fixed contact 10 are provided on the substrate which is directly below each pressing protrusion 103a.
5 are arranged respectively. The movable contact 104 is held in a state of being separated from the fixed contact 105 by a spring (not shown), and when the pressing surface 103 is pushed down in any direction and the pressing protrusion 103 a pushes down the movable contact 104, the fixed contact 105 is fixed. The switch 105 is turned on to energize and output a signal instructing the pressing direction.

In the above structure, when the pressing surface (key top) 103 is tilted in any direction and pressed, the pressing surface 103 is tilted with the pillar portion 102 as a fulcrum, and the movable contact 104 is pressed against and brought into contact with the fixed contact 105. . Although four sets of movable contacts 104 and fixed contacts 105 are shown below the pressing surface 103 in the figure, the number that can be arranged is limited to a limited number which is not so large. Therefore, the pressing surface 103 is pressed only in a limited direction, and when the pressing surface 103 is pressed in any other direction, two sets of contacts are turned on at the same time, or both contacts are turned on.
As a result of not being N, it may not be detected. When the direction in which the cursor is pressed on the display is determined by detecting the direction in which the pressing surface 103 is pressed, if the situation in which the direction instructed as described above cannot be detected occurs, the direction for moving in the desired direction is set. It had to be corrected many times.

By pressing the pressing surface which is flexibly supported by the pillar portion extending from the substrate in this way, in the opening / closing device which functions by the contact between the opposing contacts which are normally separated from each other, Since the number of contact points placed below is limited, the direction in which the pressing surface is pressed is also limited in the direction in which the cursor is moved. Further, depending on the direction in which the pressing surface is pressed, there have been cases where the contacts are not placed or two contacts are turned on at the same time. Therefore, in the conventional method, it is not possible to easily move the cursor of the display freely in the desired direction, and the direction correction is repeated many times, or the pressing surface is pressed but cannot be detected, so it is pressed again. There was a problem called.

[0005]

In the above-mentioned prior art, it is not possible to freely select the moving direction of the cursor on the display, the direction correction is repeated many times, and the pressing surface is pressed but not detected. There was a problem of repeatedly pressing it again.

[0006]

SUMMARY OF THE INVENTION Therefore, according to the present invention, no matter which direction the pressing surface is pressed, a detection signal having a different resistance value can be obtained from the difference in the contact position so that the direction of the cursor of the display is pressed. An object of the present invention is to provide an opening / closing device that can be freely moved in the specified direction. Further, in the case of a switchgear composed of a plurality of movable contacts and a fixed contact, by restricting the direction in which the pressing surface is pressed to ensure that the switchgear operates, the conventional problems have been eliminated. It is to provide a switchgear. More specifically, the present invention uses a ring-shaped resistor for one of the contacting / separating portions constituting the opening / closing device, so that no matter which direction of the pressing surface is pressed, the difference in contact position results in different resistance values. An open / close device that can detect the pressing direction of the pressing surface in a stepless manner and can move the cursor direction of the display freely in the pressing direction of the pressing surface by obtaining the detection signal. provide. In addition, the open portions of the ring-shaped resistors are overlapped with each other in the radial direction so that a contact portion is always generated when the pressing surface is pressed, or a guide portion is provided in the direction of pressing the pressing surface in advance. By prescribing, it is an object of the present invention to provide an opening / closing device that eliminates the problem that the pressing surface is pressed but is not detected and is repeatedly pressed.

[0007]

In order to achieve the above object, a first means of the present invention is to press a pressing surface of a key top supported by a pillar portion erected on a substrate to press the pressing surface. In an opening / closing device configured such that two opposing contact points that are normally in a separated state are brought into contact with each other by inclining the pressing surface, the pressing surface is tilted by pressing the pressing surface with the pillar portion as a fulcrum. Sometimes, there is a movable contact approaching the substrate side and a fixed contact on the substrate side having a positional relationship capable of contacting the movable contact, and at least one of the movable contact and the fixed contact is at least one place. It is characterized in that it is an annular resistor having an open portion at the other end, and the other is an annular conductor. The second means is that one of the movable contact and the fixed contact is an annular resistor having an open portion at least at one position, and the other has an elastic structure in which the pressed portion buckles. It is characterized in that it is an annular conductive spring member.

A third means is characterized in that the end portions of the resistor bodies which face each other with the open portion of the annular resistor body therebetween are arranged so as to overlap each other in the radial direction. Fourth
Means presses the pressing surface of the key top supported by the pillar portion erected on the substrate to incline the pressing surface so that the two contact points that are normally in the separated state are in contact with each other. In the opening / closing device configured, a movable contact approaching the substrate side when the pressing surface is tilted with the pillar portion as a fulcrum by pressing the pressing surface, and a positional relationship capable of contacting with the movable contact are described. The movable contact and the fixed contact are both non-circular, and when the pressing surface is inclined with the pillar portion as a fulcrum by pressing the pressing surface, the pillar portion It is characterized in that a plurality of projecting guide portions for restricting the tilting direction of the column are provided at predetermined intervals in the circumferential direction, and the tilting direction of the column is restricted by the gap portion between the guide parts.

According to a fifth means, a gap portion formed between the above-mentioned projecting guide portions extends in the radial direction, and the gap of the gap portion becomes narrower toward the outer diameter direction. It is characterized by being The sixth means is to press the pressing surface of the key top supported by the pillar portion erected on the substrate to incline the pressing surface, so that two contact points that are normally in contact with each other and are in contact with each other are in contact with each other. In the opening / closing device configured to perform, a movable contact that approaches the substrate side when the pressing surface is inclined by pressing the pressing surface with the pillar portion as a fulcrum, and a position that can contact the movable contact. And a fixed contact on the side of the substrate having a relationship, both the movable contact and the fixed contact are non-annular,
When the pressing surface is tilted with the pillar portion as a fulcrum by pressing the pressing surface, there is provided a guide portion for restricting a tilting direction of the pillar portion, and the guide portion has a radial shape restriction provided in a central portion. It is characterized in that the recess is configured to regulate the tilting direction of the column.

The seventh means is characterized in that the width of the regulating recess of the concave guide portion becomes narrower toward the outer diameter direction. The eighth means is characterized in that an inclination regulating portion is provided in the gap portion or the regulating recess in order to determine the limit of the tilt angle of the column portion. A ninth means is characterized in that an appropriate position on the outer diameter side of the gap portion or the regulation recess is narrower than the width of the column portion in order to determine the limit of the tilt angle of the column portion. In a tenth means, the pressing surface whose central portion is supported by the pillar portion, the guide portions, and the inclination regulating portion are arranged on a frame portion that is arranged separately from the substrate. Is characterized by.

[0011]

In the opening / closing device configured as described above, by pressing the pressing surface, the pressing surface is tilted with the pillar portion supporting the pressing surface as a fulcrum to bring the movable contact and the fixed contact into contact with each other.
One of the movable contact and the fixed contact is a ring-shaped resistor having an open portion at least one of which is opened, and the other is made of a ring-shaped conductor. The resistance direction detection signal can be obtained so that the pressing direction of the pressing surface can be recognized. Therefore, if the cursor of the display is made to correspond to the moving direction, it is possible to move the cursor in the desired direction steplessly.

Further, since either the movable contact or the fixed contact is constituted by the annular conductive spring member having a structure in which the pressed portion buckles, the annular conductive spring member is pushed. It is possible to make a finger feel a click feeling that the opening / closing device has operated when buckling. Further, since the open portions of the annular resistors are overlapped with each other in the radial direction so that the contact portion is always generated when the pressing surface is pressed, the contact signal is obtained regardless of the pressing direction of the pressing surface. It becomes possible. Further, in the case of an opening / closing device composed of a plurality of contact / separation portions, a concave guide portion having a plurality of protruding guide portions or cut portions is provided, and further, the interval for inserting the column portion or the width of the cut portion is set. Since the structure becomes narrower as the inclination of the pillar increases, it is possible to reliably regulate the tilting direction of the pillar, and it is not possible to detect the pressing of the pressing surface and eliminate the problem of repeatedly pressing again. can do.

[0013]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a front view of an example of an opening / closing device (key switch) to which the present invention is applied, and FIGS. 2A, 2B, and 2C are diagrams showing a configuration example of contacts. Based on the above figures, no matter which direction the pressing surface of the keytop is pressed, the pressing direction can be detected accurately and steplessly, and the cursor on the display can be moved freely in the pressing direction of the pressing surface. An embodiment of the opening / closing device that is made possible will be described.

In FIG. 1, a pressing surface 3 is supported on a substrate 1 such as a printed circuit board by a column portion 2 which can be flexibly tilted, and the pressing surface 3 is further pushed in the direction of an arrow to be tilted, and the lower surface of the pressing surface is The switchgear 10 is shown in which the movable contact 4 and the fixed contact 5 on the upper surface of the substrate are in contact with each other. Here, when a plurality of sets of the movable contact 4 and the fixed contact 5 are arranged independently of each other, it is the same as the conventional example of FIG. However, according to the present invention, one of the movable contact 4 and the fixed contact 5 is constituted by an annular resistor (4a, 5a) having an open portion with at least one notch opened as shown in FIG. 2 (A). , The other is an annular conductor (4b, 5) as shown in FIG.
b).

Further, the detecting portion a (lead wire) and the detecting portion b (lead wire) are respectively led out from the proper positions of the annular resistor and the annular conductor, and the pressing direction of the pressing surface 3 not shown is determined. Since it is connected to the input end of the detection circuit (current sensor or the like) for recognition, a signal output according to the pressing direction of the pressing surface 3 can be generated.

More specifically, by pressing the pressing surface 3 in a predetermined direction, one point (for example, position P1) of the annular resistor shown in FIG. 2A and the annular conductor shown in FIG. 2C. However, the resistance value (current value) fluctuates as a result of the length of the resistor located between the detection units a and b fluctuating depending on the contact position. The resistance value can be extracted by the detection circuit as a resistance value change from both ends of the detection part a and the detection part b according to the pressing direction of the pressing surface 3, and the pressing direction can be detected steplessly. The voltage applied to both contacts may be input from either of the detection units a and b.

Next, FIG. 2B shows the resistor (4a, 5).
The example in which a) is divided into a plurality of arc-shaped resistors is shown, and detection units a1 to a4 (lead wires) are individually connected to the resistors 4a1 to 4a4 and 5a1 to 5a4. Each detection unit is connected to an input end of a detection circuit that recognizes the pressing direction of the pressing surface 3. Also, it is necessary to identify the detection unit whether each resistor is set so that the resistance does not have the same value, or which resistor is selected even if each resistor has the same resistance. If it can be detected by, the pressing direction of the pressing surface 3 can be recognized. It is needless to say that the moving direction of the cursor or the like can be selected steplessly on one arcuate resistor depending on which part is pressed.

FIG. 2 (B) shows an example composed of four resistors, but this is an example and the number of resistors less than four,
Alternatively, it may be divided into four or more pieces. Further, a conductor can be used up to the input end of the detection circuit for the black lead wire portion of the detection unit in the figure.

The column portion 2 is fixed to the lower surface of the central portion of the pressing surface 3 so that the center portions of the annular resistors 4a and 5a and the annular conductors 4b and 5b are aligned with each other. It is assumed to be set. However, in the present embodiment, the resistor and the conductor both have an annular shape, but the shape including the pressing surface 3 does not necessarily have to be circular, and even if the pressing surface 3 is inclined in any direction, each shape contacts at one point. Then, it goes without saying that any shape may be used. For example, it may be a polygonal annular body, an ellipse, an oval or the like. Also,
The resistance values of the annular conductors 5b and 4b and the resistance value of the lead wire forming the detection unit do not necessarily have to be the same, and the resistance value of the annular conductor may be increased. Further, the annular resistor may be provided on the key switch side or the substrate side as described above, and the annular conductor may be provided on the substrate side or the key switch side.

FIG. 3 shows an embodiment in which the operation state of opening / closing of the switchgear is indicated by a click feeling when the opening / closing device is turned on / off. In FIG. 3A, the movable contact 4 mounted on the lower surface of the pressing surface 3 is composed of an annular resistor 4a, and the fixed contact 5 mounted on the substrate 1 is composed of an annular conductive spring member 5c. If there is. When a pressing force is applied in the direction of the arrow, the pressing surface 3 tilts and the annular resistor 4a and the annular conductive spring member 5c come into contact with each other, and at the same time, the pressed portion of the annular conductive spring member 5c is seated as shown in the figure. It yields and gives a click feeling. Resistor 4a
2A and 2B has a configuration having one or more notches, and the conductive spring member 5c is an annular (notch not shown) electrically and mechanically connected to the substrate 1. It does not have).

In FIG. 3B, the movable contact 4 and the fixed contact 5 are both provided on the substrate 1 without providing the movable contact on the pressing surface 3 side.
It is provided on the side and the pressing surface 3 is merely a pressing means. The movable contact 4 is composed of an electrically conductive spring member 4c having an annular planar shape, the fixed contact 5 is composed of an annular resistor 5a (the form shown in FIG. 2A or 2B), and the annular conductive The spring member 4c is configured to cover the upper portion of the annular resistor 5a. In this embodiment as well, when a pressing force is applied in the direction of the arrow to incline the pressing surface 3, the annular conductive spring member 4c is pushed down to buckle a part and contact the annular resistor 5a. Also at this time, generation of a signal output having a resistance value corresponding to the contact position and a click feeling can be obtained. Further, when the pressing force is released and the annular conductive spring member 4c returns to the original shape, a feeling of clicking in the separated state can be felt again. With such a structure, the switch can be handled in the same manner as a general switch, and can be used as an opening / closing device with no discomfort. That is, one of the movable contact 4 and the fixed contact 5 is composed of an annular resistor 4a, 5a having an open portion having at least one open portion, and the other portion is pressed so that the portion buckled. Annular conductive spring members 4c, 5c having
With this configuration, it is possible to provide the opening / closing device that has a click feeling as described above.

The annular resistors (4a, 5a) as described above
Switchgear 1 composed of a ring-shaped conductor (4b, 5b)
No. 0 has the first feature that an output according to the pressing direction is generated no matter which direction the pressing surface 3 is pressed.
As can be seen from (A) and (B), there is no resistor in the open portion of the annular resistor, and even if the other contact of the resistor contacts, it is not possible to generate a signal output at the time of contact.

An example of improving such a problem is shown in FIG.
Shown in (A) and (B). In this example, the ends of the resistors that face each other across the open portion are arranged so as to overlap each other in the radial direction. That is, in FIG. 4A, two annular resistors (4a1 and 4a) facing each other at the open portion (notch) are provided.
2, 5a1 and 5a2) are formed so that one end has a concave shape and the other end has a convex shape, and one resistor is always present in any radial direction indicated by an arrow. In FIG. 4B, the open portion is inclined so that either resistor is always present in the radial direction. According to this structure, since the open portion where the resistor does not exist does not exist, at least the problem that no signal output is generated even when the pressing surface is pressed can be eliminated. In the figure, an annular resistor (4
Although an example in which two a, 5a) are provided is shown, the same configuration may be applied to the case where one or more annular resistors (4a, 5a) are used. Note that FIG. 2 (A)
It goes without saying that the structure of this embodiment can be applied to a type having only one open portion as described above.

Next, FIGS. 5A and 5B are a front view of a switchgear according to another embodiment of the present invention and a plan view of the contacts on the substrate side. The switchgear of the conventional type shown in FIG. It is intended to improve the inaccuracy of the pressing direction of the pressing surface, which is a drawback of the one having a plurality of contact sets). That is, FIG. 5 (A) shows an opening / closing device 10 having a plurality of contact portions (contact points) so that the opening / closing device 10 can be reliably operated when the pressing surface 3 is tilted with the pillar portion 2 as a fulcrum. This is an example in which a protruding guide portion 6 that regulates (guides) the direction in which the pressing surface 3 is pressed is provided on the substrate 1. Explaining by the movement of the main part as seen from the upper part of FIG. 4B, the inclination path of the column portion 2 is the gap portion S formed between the two projecting guide portions 6 and the extension of the gap portion S. The direction coincides with the direction (radial direction) of the line connecting the column portion 2 and each movable contact 4. Even if the pillar portion 2 is tilted in the other direction, it is obstructed by the protruding guide portion 6 and stopped halfway, or is guided to one of the adjacent gap portions S and tilted in the gap portion. It will be.

FIG. 6 shows another embodiment, in which the pressing surface 3
The guide portion 6 is configured so that the pillar portion 2 can be reliably guided into any one of the gap portions S and tilted to press the movable contact 4 without being stopped in the middle by the protruding guide portion 6. The space between them is configured to become narrower toward the outer diameter direction. FIG. 6A shows the main part from above so that the shape of the interval between the projecting guide portions 6 can be seen. According to this embodiment, the tilted column portion 2 has the corner portion 6 on the inner diameter side of the guide portion 6.
Even when it hits a or the like, it can be guided into any of the gap portions S. Further, the same effect can be expected even if the slant guide portion of the column portion 2 is not a projection-shaped object but a guide portion 7 having a notched portion (regulating recess) 7a as shown in the central portion (FIG. 6). (B)). In this case, the pillar portion 2 located at the center of the cutout portion 7a is guided by the gap portion S and tilted toward one of the contact points 4 side.

Further, it is not always necessary to dispose either the protruding guide portion 6 or the concave guide portion 7 on the substrate 1.
As shown in FIG. 4, by mounting the frame 9 such as a housing, it is possible to reduce the number of parts and facilitate assembly and adjustment, thereby reducing costs. Further, FIG. 4 shows an opening / closing device provided with an inclination regulating portion 8 for regulating the inclination angle of the pillar portion 2 when the pressing surface 3 is pressed. The supporting structure by the frame portion 9 as shown in FIG. 7 can be applied to all the embodiments of FIGS. 1 to 6 (also FIGS. 8 and 9 described later).

8 (A) and 8 (B) are shown in FIG. 5 or FIG.
9A and 9B are a front view and a plan view of a modified example of the embodiment of FIGS. 9A and 9B, showing the gap portion S in order to prevent the pillar portion 2 from infinitely falling into the gap portion S between the guide portions 6. The tilt regulating portion 8 is provided at a proper position on the inner bottom surface. This allows
It is possible to improve the durability of the contacts and the pillars.

Further, FIGS. 9A and 9B are plan views of other modified embodiments of FIGS. 5 and 6, respectively, and FIG. 9A is a gap of the embodiment of FIG. 5 or 6A. Step S1 is placed at a proper position on the portion S
By providing a (narrow portion), the tilting range is regulated similarly to the tilt regulating portion 8. In the embodiment of FIG. 9B, the outer diameter side position of the gap portion S of FIG. 6B is terminated on the inner diameter side, so that the inclination regulating portion 8 is formed by the outer diameter side end portion 8 of the gap portion S. Is also used.
As described above, the switchgear provided with the inclination regulating portion 8 does not apply an unreasonable force to the movable contact 4 and the fixed contact 5, and can provide a switchgear with improved reliability. In the above embodiment, the case where the pillar portion itself has flexibility has been mainly described, but the joint portion between the non-flexible pillar portion and the key top is configured to be vertically movable and rotatable in three dimensions by a ball joint or the like. The present invention is applicable to the case where
Alternatively, it can be applied to the case where the key top itself is configured flexibly.

[0029]

As described above, according to the present invention, by pressing the pressing surface (key top) in either direction,
In the configuration of the switchgear (key switch) that tilts the pressing surface with the pillar as the fulcrum to bring the movable contact and the fixed contact into contact with each other, at least one of the movable contact and the fixed contact has a notch (open). Part) with a ring-shaped resistor and the other part with a ring-shaped conductor, it is possible to obtain a detection signal with a different resistance value from the difference in the contact position of both contacts. Can recognize the direction. Therefore, by making the tilt direction of the pressing surface correspond to the direction in which the cursor of the display is moved, the cursor can be moved steplessly in a desired direction.

Further, since either the movable contact or the fixed contact is constituted by an annular conductive spring member having a structure in which the pressed portion buckles, the annular conductive spring member is It is now possible to make a finger feel a click that the opening / closing device has operated when being pushed and buckled. Furthermore, the open parts of the ring-shaped resistor (the ends of the arc-shaped resistor) are made to overlap in the radial direction, so that if the pressing surface is pressed, there will always be a contact part, and in which direction It is possible to obtain a contact signal even if the pressing surface is pressed. Further, in the case of an opening / closing device composed of a plurality of contact sets, a concave guide portion having a plurality of protruding guide portions or cut portions is provided, and the spacing between the pillar portions or the width of the cut portions is changed to the column shape. As the inclination of the part becomes larger (as it goes toward the outer diameter direction), the direction in which the column part inclines can be surely regulated, and it is not possible to detect that the pressing surface is pressed, so that it can be repeated many times. It is possible to eliminate the problem of pushing it again.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a switchgear according to an embodiment of the present invention.

FIG. 2A is a plan view of an essential part of an annular resistor showing an embodiment of the present invention, FIG. 2B is a plan view of an essential part of an annular resistor of another example, and FIG. FIG. 3 is a plan view of a main part of an annular conductor according to an embodiment of the present invention.

FIG. 3A is a front view of a main part of a switchgear having a click feeling according to an embodiment of the present invention, and FIG. 3B is a front view of another embodiment.

FIG. 4A is a plan view of an essential part of an improved annular resistor, showing an embodiment of the present invention, and FIG. 4B is a plan view of an essential part of another annular resistor.

FIG. 5A is a front view of a main part of an opening / closing device having a protruding guide according to another embodiment of the present invention, and FIG. 5B is a plan view thereof.

FIG. 6A is a front view of a main part of a switchgear according to another embodiment of the present invention, and FIG. 6B is a plan view of the other embodiment.

FIG. 7 is a front view of a main part of an opening / closing device including a frame part according to another embodiment of the present invention.

FIG. 8A is a front view of a main part of a switchgear including an inclination regulating part according to another embodiment of the present invention, and FIG. 8B is a plan view of the main part.

FIG. 9A is a plan view of a main part of a switchgear according to another embodiment of the present invention, and FIG. 9B is a plan view of a main part of the other embodiment.

FIG. 10A is a side view of a main part of a conventional switchgear,
(B) is a top view of the main part of (A).

[Explanation of symbols]

1 ... Substrate, 2 ... Pillar part, 3 ... Pressing surface, 4 ...
-Movable contact, 4a ... annular resistor, 4b ... annular conductor, 4c ... annular conductive spring member, 5 ...
Fixed contacts, 5a ... Annular resistor, 5b ... Annular conductor, 5c ... Annular conductive spring member, 6 ... Protruding guide part, 7 ... Concave guide part , 8 ... Inclination regulating part, 9 ... Frame part, 10 ... Opening / closing device, 100 ...
・ Opening / closing device 101: substrate 102: pillar portion, 10
3 ... pressing surface, 104 ... movable contact, 105 ...
Fixed contact.

Claims (10)

[Claims] 1. A pair of opposing two members which are normally in a separated state by pressing a pressing surface of a key top supported by a pillar portion provided upright on a substrate to incline the pressing surface.
In a switchgear configured to contact two contacts, a movable contact that approaches the substrate side when the pressing surface is inclined by pressing the pressing surface with the pillar portion as a fulcrum, and the movable contact. A fixed contact on the substrate side having a contactable positional relationship, and one of the movable contact and the fixed contact is an annular resistor having an open portion at at least one location, and the other is an annular resistor. An opening / closing device characterized by being a conductor. 2. One of the movable contact and the fixed contact is an annular resistor having an open portion at least at one position, and the other is an annular resistor having an elastic structure in which a pressed portion buckles. The switchgear according to claim 1, wherein the switchgear is a conductive spring member. 3. The opening / closing according to claim 1, wherein the end portions of the resistors that face each other with the open portion of the annular resistor interposed therebetween are arranged so as to overlap each other in the radial direction. apparatus. 4. By pressing a pressing surface of a key top supported by a pillar portion standing upright on a substrate and inclining the pressing surface, two contact points that are normally in a separated state and are in contact with each other are in contact with each other. In the opening and closing device configured as described above, when the pressing surface is pressed, the movable contact approaching the substrate side when the pressing surface is inclined with the pillar portion as a fulcrum, and the positional relationship capable of contacting the movable contact And a fixed contact on the side of the substrate, wherein the movable contact and the fixed contact are both non-annular, and when the pressing surface is inclined with the pillar portion as a fulcrum by pressing the pressing surface, the pillar A plurality of projecting guide portions for regulating the tilting direction of the portion are provided at predetermined intervals in the circumferential direction,
An opening / closing device, characterized in that the tilting direction of the column is regulated by a gap portion between the guide portions. 5. A gap portion formed between the projection-shaped guide portions extends in the radial direction, and the gap of the gap portion is configured to become narrower toward the outer diameter direction. The switchgear according to claim 4. 6. The pressing surface of a key top supported by a pillar portion provided upright on a substrate is pressed to incline the pressing surface, so that two contact points that are normally in contact with each other and are in contact with each other are in contact with each other. In the opening and closing device configured as described above, when the pressing surface is pressed, the movable contact approaching the substrate side when the pressing surface is inclined with the pillar portion as a fulcrum, and the positional relationship capable of contacting the movable contact And a fixed contact on the side of the substrate, wherein the movable contact and the fixed contact are both non-annular, and when the pressing surface is inclined with the pillar portion as a fulcrum by pressing the pressing surface, the pillar An opening / closing device comprising: a guide portion for controlling a tilting direction of the column portion, wherein the guide portion is configured to restrict a tilting direction of the column portion by a radial-shaped regulation recess provided in a central portion. 7. The opening / closing device according to claim 6, wherein the width of the restriction recess of the recessed guide portion becomes narrower toward the outer diameter direction. 8. The opening / closing device according to claim 4, wherein an inclination regulating portion is provided in the gap portion or the regulating recess in order to determine the limit of the tilting angle of the column portion. 9. The outer diameter side proper portion of the gap portion or the regulation recess is made narrower than the width of the column portion in order to determine the limit of the tilting angle of the column portion. Switchgear. 10. The pressing surface whose central portion is supported by the pillar portion, the guide portions, and the inclination regulating portion are arranged on a frame portion that is arranged separately from the substrate, respectively. The switchgear according to any one of claims 1 to 9, which is characterized in that.