JP2001202851A - Rotary switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems in prior art rotary switches that cannot respond to switching of contacts according to various functions and to the variety of accompanying operations. SOLUTION: This rotary switch comprises a returning means F for returning a knob 2 into a first position A from a second position B when the knob 2 is rotated from the first position A to the second position B in one direction, and a holding means H for holding the knob 2 at a third position C when the knob 2 is rotated from the first position A to the third position C in other direction. Therefore, it beomes possible to perform the switching of contacts according to various functions and to the variety of accompanying operations, in comparison with prior arts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary switch suitable for use in electronic equipment having various functions such as a video camera.

[0002]

2. Description of the Related Art In a conventional rotary switch,
There is a rotary switch with a self-return function. In recent years, video cameras and the like incorporating various functions have emerged. With a conventional rotary switch having a self-return function, switching of contacts according to various functions and diversification of operations associated therewith. It is becoming difficult to deal with such things.

[0003]

The conventional rotary switch has a problem in that it cannot switch contacts according to various functions and cannot cope with diversified operations.

Accordingly, an object of the present invention is to provide a rotary switch capable of switching contacts according to various functions and correspondingly diversifying operations.

[0005]

According to a first aspect of the present invention, there is provided an insulating substrate provided with a plurality of fixed contacts, and a slider which slides on the fixed contacts. A rotating body, a rotatable knob coupled to the rotating body and rotating the rotating body, and rotating the knob in one direction from a first position to a second position to rotate the knob to the second position. Return means for returning from the second position to the original first position; and rotating the knob in the other direction from the first position to the third position when the knob is rotated to the third position. Holding means for holding at a position, a housing for holding the knob is provided, the knob is rotatably attached to a hole provided on a wall of the housing, and the return means and the holding means are It is a configuration that is provided on different sides across the wall .

As a second solution, the return means is housed inside the knob. Further, as a third solution means, the return means is formed outside the housing, the holding means is formed inside the housing, and the holding means comprises: a spring member having a convex portion; And a concave portion that engages and disengages.

As a fourth solution, the spring member is formed of a metal plate, is attached to the rotating body, and has a concave portion which engages with and disengages from the convex portion provided on the spring member. The plate was formed of a metal plate, and the click plate was attached to the inner surface of the wall. As a fifth solution, the return means includes a torsion coil spring having a winding portion and a pair of arms extending from the winding portion, wherein the winding portion is attached to the knob, and The pair of arms are configured to be engaged with the receiving portions of the wall.

As a sixth solution means, when the knob is rotated in the other direction and is held by the holding means at the third position, an operating portion provided on the knob causes the torsion coil spring to rotate. The configuration is such that the resilient force of the torsion coil spring is not applied to the knob so that the arm is not displaced. As a seventh solution, a tubular portion having a hole is provided at the center of the knob, and an operating portion is provided in the tubular portion, and the movable contact is moved by the operating portion. And the fixed contact on the insulating substrate disposed at a position facing the fixed contact.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings of the rotary switch of the present invention, FIG. 1 is a cross-sectional view of the rotary switch of the present invention, and FIG. 2 relates to the rotary switch of the present invention. FIG. 3 is an explanatory view showing the relationship between the knob and the return means, and FIG. 3 relates to the rotary switch of the present invention, and is an explanatory view showing the relationship between the housing, the knob, and the return means by adding different oblique lines to the housing and the knob. 4 is a plan view of an insulating substrate according to the rotary switch of the present invention, FIG. 5 relates to the rotary switch of the present invention, and is an explanatory view showing the operation when the knob is rotated in one direction, and FIG. FIG. 7 is a plan view of a click plate according to the rotary switch of the present invention (a view when the click plate is viewed from the upper side in FIG. 1), and FIG. Is the original Relates to a rotary switch is an explanatory view showing a switching state of the contact.

Next, the structure of the rotary switch according to the present invention will be described with reference to FIGS. 1 to 8. The housing 1 of an electronic device such as a video camera is formed of a molded product of a synthetic resin, and is formed by a wall 1a. 1 is divided into an outer side and an inner side. The wall 1a has a hole 1b penetrating in and out.
And an arc-shaped protruding portion 1c protruding outward in a state positioned around the hole 1b, receiving portions 1d provided at both ends of the protruding portion 1c, and a state facing the protruding portion 1c. And a convex stopper portion 1e protruding outward.

Circular knob 2 made of molded synthetic resin
Is a circular base 2a, a protrusion 2b radially protruding from an outer peripheral portion of the base 2a, a spherical concave portion 2c provided on an outer surface of a central portion of the base 2a, and a central portion of the base 2a. A through hole 2d provided, a cylindrical portion 2e having a stepped portion on the inner surface and protruding downward from the base 2a so as to surround the hole 2d, and an outer side (radial direction) from the cylindrical portion 2e.
, An arc-shaped operating portion 2f protruding downward from the base portion 2a, an operating portion 2f and a cylindrical portion 2e.
And a pair of stopper portions 2h formed of a convex portion provided below the base portion 2a on the outside of the storage portion 2g and an end of the cylindrical portion 2e. And a plurality of projections 2j.

The knob 2 is provided with the base 2a and the wall 1
The cylindrical portion 2e is inserted into the hole 1b in a state where the cylindrical portion 2e is located outside the portion a, and is rotatably attached to the wall portion 1a. At this time,
As shown in FIGS. 2 and 3, the stopper 1e of the housing 1 is located between the pair of stoppers 2h, and the knob 2 is moved to the first position.
From the position A in one direction (clockwise) to the second position B, or from the first position A in the other direction (counterclockwise) to the third position C At this time, the pair of stopper portions 2h hit the stopper portions 1e, respectively, so that the rotation of the knob 2 is stopped.

The torsion coil spring 3 constituting the return means F
Has a winding portion 3a and a pair of arms 3b extending from both ends of the winding portion 3a.
As shown in FIGS. 2 and 3, the winding part 3a is positioned on the outer periphery of the cylindrical part 2e and stored in the storage part 2g, and the pair of arms 3b is hooked on the receiving part 1d of the protrusion 1c. Thus, the return means F is configured.

At this time, the operating portion 2f is located between the pair of arms 3b, and rotates the knob 2 in one direction (clockwise) from the first position A (the position shown in FIGS. 2 and 3). When rotated to the second position B, the operating part 2f displaces the one arm 3b, and when this rotation is released, the operating part 2f is pushed back by the elastic force of the one arm 3b, and the knob is pushed. 2 is the first
When the knob 2 is rotated from the first position A in the other direction (counterclockwise) to the third position C when the knob 2 is rotated from the first position A to the third position C, the operating part 2f is turned to the other arm 3b. The knob 2 can be stopped at the third position C by preventing the other arm 3b from being displaced and preventing the elastic force of the other arm 3b from being applied to the knob 2 without hitting the knob 2. It has become.

On the upper surface of the mounting board 4 made of a metal plate or the like,
An insulating substrate 5 made of a film or the like is attached by bonding or the like, and the attaching substrate 4 and the insulating substrate 5 are arranged in the housing 1 while being located below the knob 2. And
As shown in FIG. 4, a plurality of conductors 6, 7, and 8 are formed on the surface of the insulating substrate 5 by printing.
Covered with. Further, a pair of conductors 6 located above the drawing are arc-shaped fixed contacts 6 exposed from the resist layer.
a, and a pair of conductors 7 provided at the lower side of the drawing are provided with an arc-shaped fixed contact 7a exposed from the resist layer, and provided with a lead-out portion 7b. A pair of conductors 8 located between 7 are provided with a fixed contact 8a exposed from the resist layer and a lead portion 8b.

As shown in FIG. 7, a click plate 9 made of a metal plate constituting a part of the holding means H has an annular plate portion 9b provided with a circular hole 9a in the center, and a plate portion 9b. 9a
And a relatively large rectangular hole 9 formed in the
c, and are provided in the circumferential direction from the hole 9c,
A relatively small rectangular hole 9d forming a recess, and a plate portion 9;
b having an attachment portion 9f having holes 9e formed at intervals on the outer peripheral portion. In addition, each hole 9a, 9c, 9d, 9
e is a through hole.

The click plate 9 has a hole 9a aligned with the hole 1b of the wall 1a and overlaps the inside of the wall 1a, and a projection (not shown) provided on the wall 1a. ) Is inserted into the hole 9e, and the tip of the protrusion is thermally caulked to be attached to the inside of the wall 1a.

The rotating body 10 made of a synthetic resin molded product
A circular concave portion 10a provided in the center portion;
The rotary body 10 has a hole 10b provided at the center of the hole 10a and a plurality of mounting holes 10c provided around the hole 10b. Two sliders 11 made of a metal plate (only one slider 11 is shown in FIG. 1) are attached by thermal caulking (not shown) or the like. The rotating body 10 is attached to the mounting hole 1.
The projection 2j of the knob 2 is inserted into the knob 0c so that the concave portion 10a is aligned with the hole 2d of the knob 2, and the upper surface is arranged so as to overlap the click plate 9.

The spring member 12 made of a metal plate constituting a part of the holding means H has a hole 12a provided in the center and a plurality of mounting holes 12b provided around the hole 12a.
Protruded from the outer periphery, and the projection 12c
And an elastic arm portion 12d having The spring member 12 inserts the protrusion 2j of the knob 2 into the mounting hole 12b so that the hole 12a coincides with the hole 10b of the rotating body 10 and overlaps the inner surface (lower surface) of the rotating body 10.

Then, the rotating body 10 and the spring member 12 are attached to the knob 2 by heat caulking the tip of the projection 2j, and the rotating body 10 and the spring member 12 are rotated together by the rotation of the knob 2. ing. The rotating body 10
Is attached, the two sliders 11 can be brought into contact with and separated from the fixed contacts 6a and 7a, respectively. In the first position A, one of the sliders 11a is fixed as shown in FIG. The contact 11a contacts the contact 6a and turns on, the other slider 11b is on the resist layer and turns off, and at the second position B, the sliders 11a and 11b contact the fixed contacts 6a and 7a and come together. In the third position C, the sliders 11a and 11b are located on the resist layer and are both OFF.

When the spring member 12 is attached,
The convex portion 12c engages with and disengages from the holes 9c and 9d, which are concave portions of the click plate 9, to form the holding means H. As shown in FIG. Portion 12c is engaged at one end of the hole 9c,
In the position B, the convex portion 12c is located on the other end side of the hole 9c. In the third position C, the convex portion 12c extracted from the hole 9c is engaged with the hole 9d, and Is to be held.

The movable body 13 made of rubber has a dome shape, and a movable contact 14 is provided at an inner lower end thereof. The movable body 13 is located in the hole 2d of the knob 2 and the movable contact 14 is fixed. With the rotating body 10 facing the contact 8a,
And is held and held in the concave portion 10a. The operating portion 15 made of a synthetic resin molded product or the like is formed of a bottomed cylindrical portion having a flange, and the operating portion 15 is inserted into the hole 2d of the knob 2 and the tip protrudes upward from the concave portion 2c. In this state, the flange is in contact with the step provided in the hole 2d to prevent the flange from coming off, and is attached to be vertically movable.

The operating portion 15 is constantly pressed upward by the elasticity of the movable body 13. When the operating portion 15 is pressed, the movable body 13 is pushed and the movable contact 14 is fixed. 8a to be turned ON upon contact with
When the pressing of the operating section 15 is released, the operating section 15 is pushed back by the elasticity of the movable body 13 and the movable contact 14 is separated from the fixed contact 8a and turned off.

Next, the operation of the rotary switch according to the present invention will be described. First, the projection 12c of the spring member 12 is in the first position A shown in FIG. When the knob 2 is rotated clockwise in this state, the operating portion 2f rotates while displacing the arm portion 3b of the torsion coil spring 3, and the stopper portion 2h collides with the stopper portion 1e of the housing 1, as shown in FIG. hand,
The rotation of the knob 2 stops, and the knob 2 comes to the second position B.

When the knob 2 rotates clockwise, the rotating body 10 rotates, and the convex portion 12c of the spring member 12 is rotated.
Goes from the first position A to the second position B as shown in FIG. 7, and the sliders 11a and 11b also rotate, and as shown in FIG. At the position B, the contact of the slider 11 is switched. In addition, when the rotation of the knob 2 is released at the second position B, the operating portion 2f is pushed back by the displaced arm 3b of the torsion coil spring 3, and the knob 2 self-returns to the original first position A. State, the spring member 12 and the slider 11a,
11b also returns to the original first position A. It should be noted that this rotation operation does not involve the engagement and disengagement of the convex portion 12c, so that no clicking feeling is generated.

Next, when the knob 2 is rotated in the counterclockwise direction in the first position A shown in FIG. 2, the operating portion 2f is turned to the arm portion 3b of the torsion coil spring 3, as shown in FIG.
, The elastic force of the torsion coil spring 3 is not
Rotate so that it does not fall on
Collides with the stopper 1e of the housing 1, the rotation of the knob 2 stops, and the knob 2 comes to the third position C.

By rotating the knob 2 in the counterclockwise direction, the convex portion 12c of the spring member 12 comes out of the hole 9c and engages with the hole 9d with a moderation. 3 and the slider 11
In FIGS. 8A and 8B, as shown in FIG. 8, the contacts are switched from the first position A to the third position C on the slider 11 side. When the knob 2 is rotated clockwise at the third position C, the operating portion 2f is rotated in a state where it does not come into contact with the arm portion 3b of the torsion coil spring 3, and the original first portion shown in FIG. Returning to the position A, the protrusion 12c of the spring member 12
Is removed from the hole 9d and engaged with the hole 9c with a moderation, returns to the original first position A, and further, the sliders 11a and 11b also return to the first position A shown in FIG. As described above, since the position between the first position A and the third position C does not reach the elastic force operating portion 2f of the torsion coil spring 3, the knob 2 can be stably held at both positions.

Next, when the operating section 15 is pressed in the state shown in FIG. 1, the movable body 13 is pushed, and the movable contact 14 is moved to the fixed contact 8a.
When the operation unit 15 is released from pressing, the elasticity of the movable body 13 causes the operation unit 15 to be pushed back and the movable contact 14 to be separated from the fixed contact 8a and turned off. I have. Thus, the operation of the rotary switch of the present invention is performed.

In the above embodiment, the return means F
Has been described above in which the holding means H is provided outside the wall 1a and the holding means H is provided inside the wall 1a. However, the relationship may be reversed. Although 9c and 9c are provided and the protrusion 12c is provided on the spring member 12, the uneven portions of both may be reversed.

[0030]

According to the rotary switch of the present invention,
Return means F for returning the knob 2 from the second position B to the original first position A when the knob 2 is rotated in one direction from the first position A to the second position B; When the knob 2 is rotated from the first position A in the other direction to the third position C, the holding means H for holding the knob 2 at the third position C is provided. It is possible to provide a rotary switch capable of switching a contact according to a function and diversifying an operation accordingly. Further, since the return means F and the holding means H are provided on different sides with respect to the wall 1a, the degree of freedom in arranging components is increased, and a thin rotary switch can be provided.

Further, since the return means F is housed inside the knob 2, a space factor is good and a thinner rotary switch can be provided. Further, the return means F is formed outside the housing 1, the holding means H is formed inside the housing 1, and the holding means H engages with and disengages from the spring member 12 having the protrusion 12c and the protrusion 12c. Since it is formed by the concave portions 9c and 9d, the configuration is simple, the assemblability is good,
An inexpensive rotary switch can be provided.

The spring member 12 is formed of a metal plate and attached to the rotating body 10, and the click plate 9 having the concave portions 9c and 9d engaged and disengaged from the convex portion 12c provided on the spring member 12 is formed of a metal plate. , The life of the click mechanism can be extended. Further, since the click plate 9 is attached to the inner surface of the wall 1a, a space factor is good and a thin rotary switch can be provided.

The return means F is provided with a torsion coil spring 3 having a winding portion 3a and a pair of arms 3b extending from the winding portion 3a. The arm 3b is locked to the receiving portion 1d of the wall 1a, so that it is possible to provide a returning means with a simple structure and good assemblability.

When the knob 2 rotates in the other direction and is held by the holding means H at the third position C, the arm 3b of the torsion coil spring 3 is not displaced by the operating portion 2f provided on the knob 2. In this way, the resilience of the torsion coil spring 3 is prevented from being applied to the knob 2, so that the knob 2 can be stably held at the third position C, and has a simple configuration and a self-consistent operation that can be diversified. You get something without a return.

Further, a cylindrical portion 2e having a hole 2d is provided at the center of the knob 2, and an operating portion 15 is disposed in the cylindrical portion 2e.
Because the fixed contact 8a on the insulating substrate 5 disposed at a position facing the movable contact 14 is brought into contact with or separated from the fixed contact 8a, a push switch with a good space factor can be obtained, and the number of contact switching can be increased. Can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rotary switch according to the present invention.

FIG. 2 is an explanatory view showing a relation between a housing, a knob, and a return unit by adding hatching to the housing according to the rotary switch of the present invention.

FIG. 3 is an explanatory view showing a relation between a housing, a knob, and a return means by adding different diagonal lines to a housing and a knob according to the rotary switch of the present invention.

FIG. 4 is a plan view of an insulating substrate according to the rotary switch of the present invention.

FIG. 5 is an explanatory view showing an operation when the knob is rotated in one direction according to the rotary switch of the present invention.

FIG. 6 is an explanatory view showing an operation when the knob is rotated in another direction according to the rotary switch of the present invention.

FIG. 7 is a plan view of a click plate according to the rotary switch of the present invention.

FIG. 8 is an explanatory diagram showing a switching state of contacts according to the rotary switch of the present invention.

[Explanation of symbols]

 Reference Signs List 1 housing 1a wall 1b hole 1c protrusion 1d receiving portion 1e stopper 2 knob 2a base 2b protrusion 2c recess 2d hole 2e cylindrical portion 2f operating portion 2g housing 2h stopper 2j protrusion 3 torsion coil spring 3a winding portion Arm 4 Mounting board 5 Insulating board 6 Conductor 6a Fixed contact 6b Leader 7 Conductor 7a Fixed contact 7b Leader 8 Conductor 8a Fixed contact 8b Leader 9 Click plate 9a Hole 9b Plate 9c Hole (recess) 9d hole (Concave part) 9e Hole 9f Attachment part 10 Rotating body 10a Recess 10b Hole 10c Attachment hole 11 Slider 12 Spring member 12a Hole 12b Attachment hole 12c Convex part 12d Arm part 13 Movable body 14 Movable contact 15 Operating part F Returning means H Holding Means A First position B Second position C Third position

Claims (7)

[Claims] An insulated substrate provided with a plurality of fixed contacts, a rotating body having a slider that slides on the fixed contacts, a rotating body coupled to the rotating body and rotating the rotating body. A possible knob, and return means for rotating the knob in one direction from a first position and rotating the knob to a second position to return the knob from the second position to the original first position. Holding means for holding the knob at the third position when the knob is rotated from the first position in the other direction to the third position, and a housing for holding the knob is provided. A rotary, wherein the knob is rotatably attached to a hole provided in a wall of the housing, and the return means and the holding means are provided on different sides of the wall with respect to each other. switch. 2. The rotary switch according to claim 1, wherein said return means is housed inside said knob. 3. The return means is formed outside the housing, the holding means is formed inside the housing, and the holding means is provided with a spring member having a convex portion, and a detachable / engageable connection with the convex portion. 3. The rotary switch according to claim 1, wherein the rotary switch is formed by a concave portion. 4. The spring member is formed of a metal plate and attached to the rotating body, and a click plate having the concave portion engaging and disengaging from the convex portion provided on the spring member is formed of a metal plate. 4. The rotary switch according to claim 3, wherein said click plate is attached to an inner surface of said wall. 5. The return means includes a torsion coil spring having a winding part and a pair of arms extending from the winding part, wherein the winding part is attached to the knob, and the pair of arms is provided. The rotary switch according to any one of claims 1 to 4, wherein the rotary switch is configured to be locked to a receiving portion of the wall portion. 6. The third rotation of the knob in the other direction causes the third rotation.
When the arm is held by the holding means at the position of the knob, the arm of the torsion coil spring is not displaced by the operating portion provided on the knob, so that the elastic force of the torsion coil spring is not applied to the knob. The rotary switch according to claim 5, wherein: 7. A tubular portion having a hole at the center of the knob, and an operating portion is provided in the tubular portion, and a movable contact is moved by the operating portion to oppose the movable contact. The rotary switch according to any one of claims 1 to 6, wherein the fixed contact on the insulating substrate arranged at a position is separated from the fixed contact.