JPH046105Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a pulse switch used in electronic equipment such as electronic tuning that operates by electrical signals.

Conventional configurations and their problems Various panel switches for use in car radios and the like have been developed.

However, conventional switches have a problem of poor moderation and chattering.

Purpose of the invention In view of the above-mentioned drawbacks, the present invention provides a pulse switch that has a good sense of moderation and does not cause chattering.

Structure of the Invention In order to achieve the above object, the pulse switch of the present invention includes a box-shaped case having a radial unevenness on the bottom surface, a switch board made of an insulator attached to the opening of the case and having a contact point. , a switching plate having a similar radial unevenness opposite to the unevenness on the bottom of the case, and held inside the case so as to be rotatable within a regulated range, and a switching plate facing the bottom of the case and the switching plate a click spring that rotates the switching plate that is rotatably driven by an operating shaft and that is engaged with each of the radial uneven portions; A brush slides on the switch board as the switching board rotates, and slides into contact from an insulating part on the switch board to a contact point near the end of rotation of the switching board, and a protrusion of the click spring touches the contact point at the end of rotation of the switching board. When the switching plate is disengaged from the uneven portion, the switching plate is rotated back to the neutral position and the brush is brought into sliding contact with the contacts on the switch board and onto the insulating part. When the click spring crosses the convex part of the case, the brush attached to the switching plate slides over the contact on the switch board and enters the ON area of the contact, so the click spring crosses the convex part of the case. Since a force above a certain level is required to cross the convex part of the brush, the operating shaft is rotated with a force above the above certain level to increase the speed at which the brush enters the ON region to prevent chattering and to prevent the brush from rotating. Since the return to rotation is performed stably and quickly by the coil spring, chattering upon return to rotation is also prevented, and a pulse signal without chattering can be obtained.

DESCRIPTION OF EMBODIMENTS The configuration of an embodiment of the present invention is shown in FIG.
This will be explained with reference to b, c and FIG. Case 1
On the switch board 2 installed in the opening of
Two fixed contacts 3, 4 are provided, the fixed contacts 3,
Terminals 7 and 8 are attached to terminal holes 5 and 6 at the ends of 4, and a terminal 11 is attached to terminal hole 9 via a Y-shaped contact 10. A switching plate 13 is inserted into the operating shaft 12 on the switch board 2 and rotatably mounted in the case. A brush 14 is provided on the surface of the switching plate 13 facing the switch board 2 so as to be in contact with the contact points of the contactor 10.
is installed. Note that contacts 23 and 24 are provided extending from both sides of the brush 14, and these contacts 23 and 24 are located between the fixed contacts 3 and 4, and as the switching plate 13 rotates, the contacts 23 and 24 are The fixed contact 3 and the contact 24 are provided so as to come into contact with and away from the fixed contact 4, and the contacts 23 and 24 are provided so as to be in sliding contact with the switch board 2. In addition, the switching plate 13
A coil spring 16 is inserted into the recess 15, and both ends of the coil spring 16 are in pressure contact with the inner wall of the case 1, so that the switching plate 13 is always held in a neutral position. A plurality of concavo-convex portions 17 are provided radially on the bottom surface of the case 1 on the surface facing the switching plate 13.
The switching plate 13 is also provided with the same number of uneven portions 18 as the uneven portions 17 of the case 1 radially on the surface facing the uneven portions 17 of the case 1 . Switching plate 13 and case 1
A driving plate 19 that is rotationally driven by the rotation of the operating shaft 12 is located between the switching plates 13 and 13, and
A click spring 20 is attached to the drive plate position 9. Two protrusions 21 and 22 are provided at the tip of the elastic arm of the click spring 20 so as to protrude in opposite directions on the same radial line, and are pressed into contact with the recesses of the switching plate 13 and the case 1, respectively.

In FIG. 1a, 27 and 28 are holding members for the operation shaft 12, 29 is a buffer member provided between the switch board 2 and the holding member 28, 30 is a presser plate attached to the top of the case 1, and 31 is a washer attached to the tip of the operating shaft 12 and in contact with the presser plate 30.

Next, regarding the operation of the above-mentioned pulse switch, Fig. 1 a, b, c, Fig. 2 and Fig. 3 a, b, c,
This will be explained with reference to FIGS. d and e and FIGS. 4a and 4b. Note that FIGS. 3a to 3e are side sectional views illustrating the movement of the main parts to explain the operation of the pulse switch, and the fixed contact 4 and the contact 24 are omitted for convenience of explanation. FIGS. 4a and 4b are top sectional views for explaining the movement of a coil spring, which is a main component.

First, when no rotational force is applied to the operating shaft 12,
As shown in FIG. 4a, both ends of the coil spring 16 are in contact with the inner wall of the case 1 to hold the switching plate 13 in a neutral position.

At this time, as shown in Figure 3a, click spring 20
The convex portion 21 is the concave portion A of the concavo-convex portion 17 of the case 1.
The convex portion 22 presses and engages with the concave portion C of the uneven portion 18 of the switching plate 13, and the contact 23 of the brush 14 mounted on the switching plate 13 is located between the fixed contacts 3 and 4 on the switch board 2. , the switch is off (OFF)
It has become a state.

Next, when the operating shaft 12 is rotated against the force of the coil spring 16 that tries to hold the switching plate 13 in the neutral position, the drive plate 1 attached to the operating shaft 12
9 rotates, the click spring 20 attached to this drive plate 19 rotates, and as shown in FIG.
At the same time as the contact 23 is rotated toward the fixed contact 3 side, the convex portion 21 attempts to disengage from the pressure contact/engagement with the convex portion A of the uneven portion of the case 1.

Next, when the operating shaft 12 is further rotated, the switching plate 13 is further rotated by the convex portion 22 of the click spring 20, and comes into contact with the contact 23 of the brush 14 and the fixed contact 3 on the switch board 2, and the switch is turned on ( ON) state. At this time, click spring 2
The convex part 21 of 0 is the concave part A of the concave and convex part 17 of the case 1
It attempts to engage with and disengage from the concave portion B, climb over the convex portion, and engage with the adjacent concave portion B. By further rotating the operating shaft slightly, the stopper stepped portion 25 provided on the switching plate 13 comes into contact with the inner wall of the recessed stopper portion 26 provided on the case 1, as shown in FIG. 22 is the switching plate 13
stops rotating due to the above-mentioned contact, so the third
As shown in Figure c, the concave portion C of the concavo-convex portion 18 of the switching plate 13
Attempting to disengage from pressure contact or engagement with.

Next, when the operating shaft 12 is rotated a little further, the convex part 22 of the click spring 20 is disengaged from the concave part C of the switching plate 13, and the coil spring 1 is rotated as shown in FIG. 4b.
6 is in contact with the inner wall of the case 1 to return the switching plate 13 to the neutral position, and as shown in FIG.
It attempts to rotate in the rotational direction F.

Next, if you rotate the operating shaft 12 a little further,
(This rotation of the operating shaft 12 causes the protruding portion 21 of the click spring 20 to press against and engage with the recessed portion B due to the pressing force of the protruding portion 21 of the click spring 20 against the uneven portion 17 of the case 1. ) Figure 3e
As shown, the convex portion 21 of the click spring 20 is placed in the concave portion B of the concavo-convex portion 17 of the case 1, and the convex portion 22 is rotated by the return force of the coil spring 16 against the switching plate 13, and returns to the neutral position. , is press-fitted into the recess D of the uneven portion 18 of the switching plate 13.

Further, the contact 23 of the brush 14 returns between the fixed contacts 3 and 4, and the switch becomes OFF.

As above, the pulse switch is OFF→ON→
This generates an OFF pulse signal on the rotational direction side of the operating shaft 12.

Further, as mentioned above, the operating shaft 12 is connected to the coil spring 1.
It is necessary to rotate with a force greater than the sum of the return force acting on the switching plate 13 by the switch 6 and the engagement/disengagement force for engaging/disengaging the convex portion 21 of the click spring 20 from the concave portion A of the concave/convex portion 17 of the case 1. Further, when the contact 23 of the brush 14 is in contact with the fixed contact 3 (ON state), the convex portion 21 of the click spring 20 is connected to the concave and convex portion 1 of the case 1.
Since the convex portion 21 attempts to escape from the concave portion A of 7 and engage with the concave portion B, the force required to rotate the operating shaft 12 is due to the return force that causes the convex portion 21 to engage toward the concave portion B. The force that tries to unite is reduced. That is, when the operating shaft 12 is rotated with the same force, the switching plate 13 moves rapidly just before the ON state, so chattering when the switch is ON can be prevented.
When OFF, the switching plate 13 moves quickly due to the return force exerted on the switching plate 13 by the coil spring 16 and the force of the protrusion 22 of the click spring 20 trying to engage with the recess D of the uneven part 18 of the switching plate 13. Since the fixed contact 3 and the contact 23 are separated from each other, chattering is prevented from occurring when the switch is turned off.

Also, a click spring 2 that drives the switching plate 13 is provided.
Since the two convex portions 21 and 22 of 0 are provided on the same radiation and the convex portions 21 and 22 are made of a single piece of press, it is possible to manufacture the two convex portions with extremely small deviations and high precision. As a result, the deviation in the left-right operating angle of the switching plate 13 becomes extremely small, the timing of the click moderation of the switching plate and the case matches well, and a stable pulse signal can be obtained in both left-right rotation.

In addition, by attaching the click spring 20 to the drive plate 19, the fitting surface with the operating shaft 12 becomes wider, making it easier to thrust the operating shaft 12, and operating shafts such as pulse switches and push switches that require thrust action. It has the advantage that it can be easily connected to other objects (not shown).

In addition, in the above operation explanation, the rotation direction of the operating shaft 12 was explained only in one direction, but by rotating the operation shaft 12 in the opposite direction, a pulse is generated between the contact 24 of the brush 14 and the fixed contact 4 in the same operation. A size code can be generated.

Furthermore, when the above-mentioned pulse switch is turned ON, the convex part 21 of the click spring 20 is applied to the concave part B of the concave and convex part 17 of the case 1 by the rotational force of the operation shaft 12 and the convex part 21.
This is generated when the holder is rotated and engaged with the combined force of the force trying to engage the recess B, so it can be felt as an extremely clear feeling.

Effects of the invention As described above, according to the invention, since switching is performed at different contacts on the switch board depending on the direction of rotation of the operating shaft, direction discrimination and pulse signal generation can be performed with a simple structure. Therefore, since the switching plate returns to the neutral position, it is possible to provide a pulse switch with no shaft play, excellent moderation feel, and no chattering.

[Brief explanation of drawings]

Fig. 1a is an exploded perspective view of a pulse switch according to an embodiment of the present invention, Fig. 1b is a rear perspective view of the case, Fig. 1c is a rear plan view of the case, and Fig.
The figure is a sectional view of the same, Figures 3a, b, c, d, and e are side sectional views explaining the movement of the main parts to explain the operation of the pulse switch, and Figures 4a and b are the main parts of the same. FIG. 3 is a top sectional view for explaining the movement of a coil spring. 1... Case, 2... Switch board, 3, 4...
...Contact, 10...Contact, 12...Operation shaft, 13
. . . Switching plate, 14 . . . Brush, 16 .

Claims (1)

[Claims for Utility Model Registration] (1) A box-shaped case having radial unevenness on at least the bottom surface, a switch board made of an insulator attached to the opening of the case, and the unevenness on the bottom surface of the case. a switching plate having similar opposing radial uneven portions and held within the case so as to be rotatable within a range regulated by the case; and opposing radial uneven portions on the bottom surface of the case and on the switching plate; has a protrusion that engages with each of the
a click spring that is rotationally driven by an operating shaft and that rotates the switching plate that is engaged by the protrusion; and a brush that is attached to the switching plate and has contacts that slide on the switch board as the switching plate rotates. As the operation shaft further rotates at the end of the rotation of the switching plate, the concave part of the radial unevenness on the bottom of the case and the protrusion of the click spring disengage from the engaged state and try to engage with the adjacent concave part, A coil spring is attached to the switching plate such that when the concave portion of the radial uneven portion and the protrusion of the click spring are disengaged from each other, the end portion thereof contacts the case so as to rotate the switching plate back to the neutral position. , a fixed contact provided on the switch board so as to contact a contact point of the brush near the rotation end of the switching plate and sandwich the contact point when the switching plate is in a neutral position; , and a contactor that comes into sliding contact with the brush. (2) The pulse switch according to claim (1), characterized in that a click spring is attached to the drive plate mounted so as to co-rotate with respect to the operating shaft and move in the thrust direction. (3) A claim characterized in that the two elastic protrusions that engage with opposing radial irregularities on the bottom surface of the switch case and the switching plate have click springs formed by pressing in opposite directions from a single metal plate. The pulse switch described in item (1) or (2).