JPS588527B2 - rotary switch - Google Patents

Description

[Detailed description of the invention] This invention relates to a rotary switch.

Conventionally, the contact mechanism of a rotary switch has a large number of contacts on the fixed side on an insulating plate, which are each fixed independently with eyelets on the same circumference, and at least one of the contacts is used as a common contact depending on the number of circuits. On the other hand, a rotor having a conductor plate is rotatably provided as a movable side, and as the rotor rotates, a part of the conductor plate is always in contact with the common contact, but another part is sequentially selected with the contact. A device was provided in which the main circuit i was opened and closed by contacting the main circuit.

However, with the above, each contact must be fixed with an eyelet, which is not only complicated to manufacture, but also causes errors in contact configuration when manufacturing products with different numbers of circuits and contacts depending on specifications. Furthermore, the eyelet fixing portion may become loose due to changes over time or heat generated during soldering at the contact terminal portion, resulting in poor contact.

In addition, in this type of structure, when providing a conductor plate on the rotor,
It was not possible to provide independent conductor plates on two or more circumferences in a concentric circle, and a special contact circuit could not be created.

In addition, since the above contact mechanism is used while being exposed,
This has the disadvantage that dust adheres to it, causing poor adhesion and noise generation.

The object of the present invention is to provide a rotary switch that eliminates the above-mentioned conventional drawbacks.In particular, it is an object of the present invention to provide a rotary switch in which a terminal molded inside an insulator is led out through a through hole provided in the insulator, and its tip is bent. It features a fixed contact that protrudes from the rotor and comes into direct contact with the movable electrode of the rotor, making it possible to realize various contact circuit structures, prevent the generation of static electricity that conventionally occurs, and ensure that the rotor rotates smoothly. The present invention provides a rotary switch with a

Furthermore, various other features of the present invention will become clear from the description of the following embodiments.

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in the drawings.

In FIG. 1, 1 is a concentric circuit body as shown in FIG. 2 with a plurality of terminals 1a led out on one side, and 2 is a concentric circuit body 1 molded with synthetic resin as shown in FIG. As shown, the insulating plates 3, 3 are rotary current-carrying bodies, i.e., rotors, which are disposed facing both the front and back surfaces of the central part of the insulating plate 2, 4,
4 is a rotor holding plate, 5 is fitted with rotor 3, 3, and rotor 3
．． A rotary shaft 3 co-rotates, and 6 is a moderation mechanism attached to the rotary shaft 5 to intermittently stop the rotary shaft 5.

The concentric circuit body 1 is punched out into the shape shown in FIG. 2 using a press or the like, and is molded with an insulating plate 2.

As shown in FIG. 3, the insulating plate 2 is provided with a through hole 2a in its center for inserting a rotating shaft, and a generally fan-shaped radial hole is provided on the outer periphery of the through hole 2a with an annular wall 2b in between. through hole 2
c are provided adjacent to each other with a radiation wall portion 2d in between, and the concentric circuit main body 1 is exposed within the through hole 2c.

Further, on the outside of the through hole 2c of the insulating plate 2, pairs of bolt insertion holes 2e are provided, and appropriate slits 2f passing through the adjacent terminals present inside the insulating plate 2 are provided.

The presence of this slit 2f reduces stray capacitance between adjacent terminals.

As shown in FIGS. 2 and 3, the concentric circuit main body 1 has a long radiating portion 1b and a short radiating portion 1c existing inside the radiating wall portion 2d of the insulating plate 2 from one side of the insulating plate 2. two annular portions 1d that are continuous with the plurality of lead-out terminals 1a and have both ends continuous with the inner peripheral side of the elongated radiation portion 1b;
Ie are provided concentrically at a predetermined interval, and two circles with both ends connected to a short radiating part 1c and a long radiating part 1b at the same interval are provided on the outside of the outer annular part 1e. Ring portions 1f and 1g are provided concentrically.

The annular portion 1 is arranged concentrically from the inside to the outside.
d, 1e, 1f, and 1g have a shape in which all the annular parts 1d to 1g are bifurcated from near the other end toward one end continuous with the elongated radiation part 1b, and the annular parts 1d to 1g are bifurcated from near the other end. 1
g is led out through the through hole 2c of the fan cedar of the insulating plate 2.

After the concentric circuit body 1 is molded with resin as described above, in FIG. 2, the tip of each terminal is cut off as shown by the line The tip of the forked portion continuous with the elongated radiating portion 1d is cut, and after the cutting, the necessary tip of the forked portion is selectively bent upward and downward to form a fixed contact protruding upward as shown in Fig. 4. 7
A fixed contact 8 protruding downward is provided.

With this structure, the length of the bent portion can be longer than that of a conventional rotary suite, resulting in a longer contact life.

As shown in FIG. 5a, the rotor 3 has a thin disk shape that covers both the front and back sides of the through hole 2c of the insulating plate 2, and has a rectangular hole 3a in the center and a hole that abuts the insulating plate 2. As shown in FIG. 5b, the annular conductive material 9 is attached very thinly and flatly to the outer circumferential edge of the rectangular hole 3a at regular intervals, for example, by printing, as shown in FIG.
is located in the through hole 2c of the insulating plate 2 and protrudes from the rotating contact 7.
, 8.

A plurality of concentric circumferential grooves 9a and a plurality of radial grooves 9b are formed in the annular conductive material 9, and the concentric circuit main body 1 is formed by the grooves 9a. concentric ring portions 9c corresponding to the concentric ring portions 1d to 1g, respectively;
9d, 9e, 9f, and 9f are provided with a semicircular ring portion 9g divided into two parts leaving a continuous portion, and furthermore, the groove 9b is
The annular portions 9c to 9f are divided by leaving a continuous portion in part, and as an example, the outermost peripheral portion 9c is indicated by diagonal lines in FIG. 5b.
One continuous part 10, which is a movable electrode, and a large number of fan-shaped discontinuous parts 11 are provided.

Note that the gap between the grooves 9b is determined so that the fixed contacts 7 and 8 do not come into direct contact with the surface of the rotor 3 when the rotor 3 rotates.

It is also conceivable that the rotor 3 covers only one of the front and back surfaces of the through hole 2c of the insulating plate 2.

The rotor holding plate 4 is made of an insulating material, has a dish shape as shown in FIG. 6, has a rotary shaft insertion hole 4a in the center, and has protrusions 4c with bolt insertion holes 4b on opposite sides. The rotor 3 is held and attached to both sides of the insulating material 2.

As shown in FIG. 1, the rotating shaft 5 that rotates the rotor 3 has a moderation mechanism 6 attached to its upper side.
Its lower part is a rectangular column 5a that fits into a rectangular hole 3a of the rotor 3, as shown in FIG.

At the upper end of the rectangular column 5a at the center of the rotating shaft 5, there is provided an annular protrusion 5b that protrudes in two stages as shown in FIG. A cylindrical member 14 with a cover 13 fixed to the lower end as shown in FIG. It is fitted externally.

As shown in FIGS. 9a and 9b, the cover 13 has bolt mounting holes 13b facing each other on both the left and right sides of the upper surface plate 13a, and a spring tatami portion projecting downwardly and outwardly. 13c are provided to face each other on the left and right, and a pole mounting portion 13d with a ball 16 mounted thereon is similarly protruded in the center between the spring receiving portions 13c.

Protruding spring holding parts 13c1 and 13c2 are provided on the upper and lower sides of each spring receiving part 13c, respectively, and the plate spring 17 is attached to the spring receiving part 1.
3c are held on both sides, and the central portion thereof is placed and attached to the rear side of the ball 16 to urge the ball 16 inward.

Furthermore, a stopper portion 13e is provided at the center of the front end of the top plate 13a of the cover 13, and extends downwardly to restrict the rotation range of the rotating shaft 5 (see FIG. 10).

At the lower part of the cover 13, the moderation member 15, which is externally fitted and fixed to the protruding part 5b of the rotating shaft 5, has an upper cylindrical part 15a with a small diameter and a tapered part 15 with a larger diameter toward the bottom, as shown in FIG.
b, and are fitted onto the upper and lower stages of the protrusion 5b.

The upper cylindrical portion 15a is partially provided with a notch 15c,
A stopper portion 13e of the cover 13 is inserted into the notch 15c.
The end face of the notch 15c of the moderation member 15, which protrudes and rotates together with the rotating shaft 5, comes into contact with the stopper portion 13e, so that the rotating shaft 5 is stopped.

Further, grooves 15d are provided on the outer circumferential surface of the lower tapered portion 15b at regular intervals as shown in FIG. When the rotating shaft 5 is rotated, the rotating shaft 5 is stopped intermittently every time the ball 16 enters the groove 15d of the moderation member 15 that rotates together.

In Fig. 1, reference numeral 18 is a bolt stopper plate disposed on the lower surface of the lower rotor holding plate, which has a rotating shaft insertion hole 18a in the center and screw holes 18b for bolt attachment protruding from both left and right sides. are doing.

19 is a pair of left and right assembly bolts, 20 is bolt 19
This is a pipe that serves as a spacer for inserting.

Next, a method of assembling the rotary switch 9 from the above-mentioned parts will be explained.

First, before attaching the insulating plate 2 on which the concentric circuit body 1 is molded, the moderation member 15 is fixed to the rotating shaft 5, and then the cylindrical member 14 with the cover 13 attached thereto is fitted onto the outside.

Next, the rotor 3 held by the rotor holding plate 4 is placed on both the front and back sides (top and bottom in FIG. 1) of the insulating plate 1 on which the concentric circuit body 1 is molded, and the rotor 3 held by the rotor holding plate 4 is bolted to the bottom surface of the lower rotor holding plate 4. The lower rectangular portion 5 of the rotating shaft 5 is
Insert the screws a into the respective rotating shaft insertion holes of the upper rotor holding plate 4, the upper rotor 3-insulating plate 2, the lower rotor 3, the lower rotor holding plate 4, and the bolt stopper plate 18.

At this time, since only the mounting holes 3a of the upper and lower rotors 3, 3 are rectangular holes, only the rotors 3, 3 will co-rotate with the rotating shaft 5.

Next, the bolt 19 is inserted into the cover 13 through the pipe 20.
o Upper rotor holding plate 4, insulating plate 2, lower rotor holding plate 4
, are sequentially inserted into the bolt insertion holes of the bolt plate 18, and are screwed into the screw holes of the bolt stop plate 18 and tightened to complete the assembly, resulting in the state shown in FIG.

In addition, at that time, the cover 13 itself is attached to the bolt 19 by the 9th
As the moderation member 15 is tightened downward in the figure, the ball 1
6 forces the rotating shaft 5 downward.
The moderation mechanism 6 provided in the holder is firmly pressed down to the holding plate 4 side overnight, and no play occurs in the axial direction.

In the rotary switch having the above configuration, the rotating shaft 5
When the ball 16 plunges into the groove 15d by the moderation mechanism 6 and rotates pitch by pitch, the continuous portion 10 of the conductive material 9 of the rotor 3 connects to two selectively provided fixed terminals 7 or 8 of the circuit body 1. The circuit is closed by contact with the continuous portion 10, and the circuit is switched depending on the position of the fixed terminal γ, 8 that contacts the continuous portion 10.

In this case, the fixed terminals 7 and 8 are bifurcated, and two
Since it contacts the rotor at a point, the contact property is good.

In addition, since the discontinuous portion 11 (see Fig. 5b) is provided, the fixed contacts 7 and 8 do not slide on the surface of the rotor 3 during rotation, and therefore are insulated from the metal body (fixed contacts 7 and 8). body(
Since static electricity is not generated due to sliding contact with the rotor 3), noise caused by static electricity can be prevented.

Note that the continuous portion 10 (see FIG. 5b) is not limited to this form.

In other words, the present invention allows movable electrodes to be provided on the rotor surface in an arbitrary number and form in order to obtain the required contact circuit structure, and more preferably, discontinuous portions may be provided on the remaining portion of the rotor surface. This eliminates the generation of static electricity.

As is clear from the above description, according to the rotary switch according to the present invention, a part of the circuit body buried in the insulator is led out through a through hole provided in the insulator, and only the necessary parts are broken off at the tips. By bending it and protruding it toward the rotor,
Fixed contacts can be easily made, while movable electrodes of the required pattern can be made on the rotor by, for example, printing, so various contact circuits can be arbitrarily made not only during manufacturing but also on the user side.

Furthermore, since not only movable contacts but also discontinuous parts are densely formed in the rotor, static electricity is not generated.

In addition, the moderation mechanism attached to the rotating shaft has an extremely simple configuration, has a small number of parts, and is easy to assemble. It is also firmly pressed against the rotor and insulating plate by tightening with bolts and using a spring plate via a ball. This also has the advantage of preventing the occurrence of radial play in the axial direction.

Furthermore, since the contact portion has a closed structure, it has various advantages such as difficulty in infiltration of dust and the like into the contact portion, and no possibility of contact failure.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of a rotary switch according to the present invention, FIG. 2 is a plan view of a concentric circuit body 1, FIG. 3 is a plan view of an insulating plate 2, and FIG. FIG. 5 shows the rotor 3; a is a perspective view; b is a bottom view;
6 is a perspective view of the rotor press plate 4, FIG. 7 is a partial perspective view of the rotating shaft 5, FIG. 8 is a perspective view of the moderation member 15, and FIG. 9 is a front view of the cover 13. The plan view and FIG. 10 are front views showing a state in which the cover 13 and the moderation member 15 are assembled to the rotating shaft 5. 1... Concentric circuit body (la... terminal, 1d~1
g...Concentric ring part), 2...Insulator (2a...Rotating shaft mounting hole, 2c...Through hole), 3...Rotor, 4...
... Rotor press plate, 5 ... Rotating shaft (5a ... rectangular portion, 5b ... annular protrusion), 6 ... Moderation mechanism, 7,
8... Fixed contact, 9... Conductive material, (10... Continuous part, 11... Discontinuous part), 131... Cover, (1
3c...Spring receiving part, 13d...Ball mounting part, 13
e...stopper part), 15...moderation member stop plate, 19...bolt.

Claims (1)

[Claims] 1. By intermittently rotating a rotating shaft equipped with a moderation mechanism that performs intermittent stopping, the fixed electrode provided on the first insulator is replaced by the electrode provided on the second insulator. In a rotary switch in which a rotor having a rotor rotates to switch circuits as appropriate, the first insulator is formed by molding therein a concentric circuit body having a plurality of conductive terminals; A plurality of annular portions extending in the circumferential direction of the concentric circles provided in the concentric circuit body are led out through a plurality of through holes provided in the insulator, respectively, and one side of the annular portions protrudes as a free end. A rotary switch characterized in that the tip thereof is bent in the direction of the rotor to form a fixed contact that contacts an arbitrary pattern of movable electrodes of the rotor. 2 Perform intermittent stop Now By intermittently rotating the rotating shaft to which the moderation mechanism is attached, the rotor having the fixed electrode provided on the first insulator rotates over the fixed electrode provided on the second insulator. In the rotary switch, the first insulator is formed by molding a concentric circuit body having a plurality of conductive terminals inside the rotary switch, and the first insulator has a plurality of conductive terminals formed on the first insulator. A plurality of annular portions extending in the circumferential direction of the concentric circles provided in the concentric circuit body are led out through the respective through holes, one side of the annular portions is made to protrude as a free end, and the tip thereof is While bending in the direction of the rotor to form a fixed contact, a conductive material is provided in an annular shape on one side of the rotor, circumferential grooves are provided concentrically in the conductive material, and radial grooves are formed radially as appropriate. A large number of partitioned discontinuous parts and at least one continuous part are provided, and the continuous part is used as a movable electrode and brought into contact with the fixed contact at appropriate times, and the circuit is opened/closed and selected by rotation of the rotor. Features a rotary switch. 3 By intermittently rotating a rotating shaft equipped with a moderation mechanism for intermittent stopping, a rotor having an electrode provided on a second insulator rotates over a fixed electrode provided on a first insulator. In a rotary switch designed to switch circuits as appropriate, the first insulator is formed by molding a concentric circuit body having a plurality of conductive terminals therein, and the first insulator is provided with a plurality of conductive terminals. A plurality of annular parts extending in the circumferential direction of the concentric circles provided in the concentric circuit main body are led out through the through holes, and the 7 side of the annular parts protrudes as a free end, and the tip thereof is The moderation mechanism is bent in the rotor direction to form a fixed contact that contacts movable electrodes of an arbitrary pattern of the rotor, and is attached to the rotation shaft; a moderation member fixed to the rotation shaft so as to co-rotate;
The moderation member is provided with a cover attached so as to be held in a fixed position without co-rotating with the rotating shaft, and the moderation member is provided with a tapered annular portion that becomes larger in diameter toward the rotor mounting side of the rotating shaft. Grooves are carved at regular intervals on the outer circumferential surface of the annular portion, and a ball biased by a spring plate attached to the cover is pressed against the outer circumferential surface of the tapered annular portion, so that the grooves A rotary switch characterized in that when a moderation member rotates, a ball enters a groove to intermittently rotate a rotating shaft. 4. In the rotary switch according to claim 3, a conductive material is provided in an annular shape on one side of the rotor, circumferential grooves are provided concentrically in the conductive material, and radial grooves are appropriately provided radially. , a large number of partitioned discontinuities;
1. A rotary switch comprising: at least one continuous portion; the continuous portion serves as a movable electrode and is brought into contact with the fixed contact at appropriate times to open/close and select a fault circuit by rotation of a rotor. 5 By intermittently rotating a rotating shaft equipped with a moderation mechanism for intermittent stopping, a rotor having a fixed electrode provided on a first insulator and an electrode provided on a second insulator rotates. In the rotary switch, the first insulator is formed by molding a concentric circuit body having a plurality of conductive terminals inside the rotary switch, and the first insulator is provided with a concentric circuit body having a plurality of conductive terminals. A plurality of annular portions extending in the circumferential direction of the concentric circles provided in the concentric circuit body are led out through the plurality of through holes, and the ~ side of the annular portions protrudes as a free end, and the tip thereof The moderation mechanism is bent in the direction of the rotor to form a fixed contact that contacts movable electrodes of an arbitrary pattern on the rotor, and the moderation mechanism is attached to the rotation shaft. parts and
The moderation member is provided with a cover attached so as to be held in a fixed position without co-rotating with the rotating shaft, and the moderation member is provided with a tapered annular portion that becomes larger in diameter toward the rotor mounting side of the rotating shaft. Grooves are carved at regular intervals on the outer circumferential surface of the tapered annular portion, and a ball biased against the spring plate attached to the cover is pressed against the outer circumferential surface of the tapered annular portion. When the moderation member rotates in accordance with the rotation, the ball enters the groove and rotates the rotating shaft intermittently. While the cylindrical part is provided, the cover is provided with a part of a stopper that protrudes into the notch, and when the notch comes into contact with the stopper, the rotation of the υ rotation shaft is stopped, and the cylindrical parts with different notch ranges are appropriately combined to rotate. A rotary switch characterized by freely regulating the range.