JPH0129949Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a switch used for inputting data into a microcomputer.

In conventional switches, the contacts are mainly opened and closed only by the movement of a slider in one direction, which is driven by a push button or the like. If you try to switch the contacts separately by moving the slider in one direction and moving it in the opposite direction, you would need to provide multiple sliders on the slider and separate the multiple sliders into separate It is necessary to have a complex structure, such as sliding contact points.

The present invention solves the above-mentioned conventional problems, and allows the contacts to be switched separately depending on the movement of the slider in one direction and the movement in the opposite direction. The purpose of this invention is to provide a switch that enables this switching by using a switch.

The switch according to the present invention is provided with a slider that moves reciprocally within a wafer, and a switching body that slides in a direction perpendicular to the moving direction of the slider and is provided with a slider. One side of the body is provided with a cam groove that bulges in both directions perpendicular to the sliding direction of the slider, and the other side is provided with a pin that traces the inside of this cam groove. A contact whose conducting state is switched by the slider that moves together with the switching body at each moving position of the switching body that moves in opposite directions when tracing one bulge and when tracing the other bulge. It is made up of.

In the above switch, when the slider is moved in one direction, the switching body moves in a direction that crosses the direction of movement of the slider, and when the slider is returned in the opposite direction, the switching body moves in the opposite direction. . Depending on the direction of movement of each of the switching bodies, the contacts are switched by sliders provided on the switching bodies. Moreover, when the slider returns, the switching body returns to the neutral position, and the switching of the contacts switched by the movement of the switching body in each direction is returned to the original state.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway perspective view of a switch according to the present invention, and FIG. 2 is an exploded perspective view thereof.

Reference numeral 1 in the figure is a wafer molded with resin.
2 is a case also made of resin. Guide grooves 1 are provided at three locations on both sides and rear surface of the wafer 1.
a and a protrusion 1b located within the guide groove 1a. On the other hand, three locking pieces 2a are provided on both sides and the rear end of the case 2, and a notch 2b is formed in the center of the locking pieces 2a. The case 2 can be fixed onto the wafer 1 by inserting the locking pieces 2a into each guide groove 1a and hooking the notches 2b onto each protrusion 1b. There are two operating chambers 1c and 1d within the wafer 1.
is formed. A projection 1h is provided at the entrance of one of the operating chambers 1c.
h is inserted into a guide groove (not shown) formed on the lower surface of the slider 3. Slider 3 is this protrusion 1
It is designed to slide in the direction of arrows E and I within the operating chamber 1c while being guided by the direction of arrow h. The slider 3 is made of resin, and has an operating portion 3a at its tip for attaching a knob. This operating portion 3a projects forward from the front notch 1e of the wafer 1. An elastic arm 3b having a thickness that can be elastically deformed is integrally formed at the rear end of the slider 3, and a pin 3c is formed on the lower surface of the tip thereof. The elastic arm 3b extends into the operating chamber 1d through a notch 1g formed at the upper end of the partition wall 1f between the operating chambers 1c and 1d. Further, a spring 4 is interposed between the rear surface 3d of the slider 3 and the compartment 1f, and the slider 3 is biased by the spring 4 in the direction of arrow B (the direction in which the operating portion 3a protrudes). . Three terminals 5, 6, and 7 are provided at the bottom of the other operating chamber 1d of the wafer 1. Flat plate contacts 5a, 6a, 7a are integrally formed at the upper end of each terminal 5, 6, 7, and these contacts 5a, 6a, 7a are spaced at regular intervals on the upper surface of the bottom plate of the operating chamber 1d. (See Figure 5A and below). Similarly, a switching body 8 is provided within the operating chamber 1d. This switching body 8 is a resin molded product, and has a cam groove 8a formed on its upper surface. This cam groove 8a is formed in a diamond shape as shown in FIG. 3, and has boundaries c and d between parts a and b.
is on a step. (See Figure 4). The pin 3c at the rear of the slider 3 is pressed by the elastic arm 3d and traces the inside of the cam groove 8a, but at this time, due to the step between the boundaries c and d, the pin 3c is prevented from rotating in the opposite direction. It's getting old. A metal slider 9 is provided on the lower surface of the switching body 8. This slider 9 operates together with the switching body 8, and three contact portions 9a and 9b extending in both left and right directions touch the bottom surface of the operating chamber 1d and the contact point 5.
a, 6a, and 7a so as to come into sliding contact.

Next, the operation and effects of the present invention with the above configuration will be explained.

When no external force is applied to the slider 3, the force of the spring 4 causes the slider 3 to protrude in the direction of arrow B. At this time, the pin 3c provided at the rear end of the slider 3 is at the proximal end position of part a within the cam groove 8a of the switching body 8 (FIG. 5A). Therefore, the cutter 8 is located in the center of the operating chamber 1d of the wafer 1, and the left and right contact portions 9a and 9b of the slider 9 provided on the lower side of the switch 8 are Contact 6
It is far from a and 7a. Next, when a push button (not shown) fixed to the operating section 3a of the slider 3 is pressed to move the slider 3 in the direction of arrow A, the pin 3c traces the inside of the section a of the cam groove 8a. When the slider 8 reaches the intermediate position of the movement stroke in the A direction, the pin 3c is at the corner position of the section a of the cam groove 8a (FIG. 5B). At this time, the switching body 8 moves in the direction of arrow C within the operating chamber 1d, one contact portion 9a of the slider 9 contacts the contact 6a, and the other contact portion 9b contacts the contact 5a. In this state, the contacts 5a and 6a are electrically connected via the slider 9. When the slider 3 reaches the final end position in the direction of arrow A, the pin 3c moves to the tip position of part B of the cam groove 8a via the tip of part A (FIG. 5c). At this time, the switching body 8 moves again to the central position of the operating chamber 1d, and the contact portions 9a, 9b of the slider 9 contact the contacts 6a, 7.
Move away from both a. Next, when the pushing force on the push button fixed to the operating section 3a is removed, the slider 3 protrudes in the direction of arrow B by the force of the spring 4. Since the boundary c between the a section and the b section of the cam groove 8a is stepped (see Fig. 4), when the slider 3 protrudes in the direction A, the pin 3c does not return to the a section.
Trace inside part b. At the intermediate position of this protrusion stroke, the pin 3c reaches the corner position of part b of the cam groove 8a (FIG. 5D). At this time, the switching body 8
moves in the direction of arrow D within the operating chamber 1d, one contact portion 9a of the slider 9 contacts the contact 5a, and the other contact portion 9b contacts the contact 7a. In this state, the contacts 5a and 7a are electrically connected via the slider 9. When the slider 3 is completely projected in the direction B by the force of the spring 4, the pin 3c moves from the b section of the cam groove 8a to the base end position of the a section via the boundary d (FIG. 5A). Then, the switching body 8 returns to the central position of the operating chamber 1d, and the contact portions 9a, 9b of the slider 9 are both separated from the contacts 6a, 7a. When pushing the slider 3 again in the direction of arrow A, the pin 3c can trace the part a of the cam groove 8a without returning to the part b, and repeat the above operation, due to the presence of the step at the boundary d. .

Fig. 6 is a contact configuration diagram of this switch, Fig. 7A is a diagram showing ON/OFF operation of contacts 5a and 6a,
FIG. 7B is a diagram showing ON and OFF operations of the contacts 5a and 7a. In FIGS. 7A and 7B, the right direction in the figure shows the stroke of the slider 3 in the direction of arrow A, and the left direction shows the stroke of the slider 3 in the direction of arrow B. Contacts 5a and 6a turn ON while the slider 3 is moving in the direction of arrow A.
After that, turn OFF at the final position to work in the direction of arrow A.
Also, it is OFF during the return stroke in the direction of arrow B.
It is. On the other hand, contacts 5a and 7a are OFF when the slider 3 moves in the direction of arrow A, and even at the end in the direction of arrow A.
OFF, and then turns ON once when returning to direction B.

The ON/OFF timing of this contact is determined by the switching body 8.
It is determined by the shape of the upper cam groove 8a and the arrangement of the contacts. Therefore, in the diamond-shaped cam groove 8a shown in the figure, by changing the angle of the sides of the diamond, the distance between the contacts 5a and 6a as well as between the contacts 5a and 7a can be adjusted.
You can change the ON/OFF timing in between. In addition, the diamond-shaped cam groove 8a is made into a left-right asymmetrical shape in the figure, that is, the shapes of parts a and b are changed, and the ON time between contacts 5a and 6a is changed.
The ON time between a and a may be different. Further, the cam groove may be formed into a heart shape and locked so that the slider 3 cannot return to the direction of arrow B once it has moved to the terminal position in the direction of arrow A. Further, the cam groove can be formed into a curved shape instead of a straight line. In the illustrated embodiment, the pin 3c is attached to the slider 3.
Although the cam groove 8a is provided on the switching body 8, it is also possible to reverse this and provide the pin on the switching body and the cam groove on the slider.

As described above, according to the present invention, the wafer is provided with a slider and a switching body that slides across the slider,
The movement of the slider is transmitted to the switching body through the cam groove, and the contacts are switched by the movement of this switching body, so multiple contacts can be opened and closed by a single action of the slider. Become. Furthermore, by changing the shape of the cam groove, the timing of opening and closing the contacts can be set to suit various specifications. In particular, a cam groove is provided that bulges in both directions intersecting the direction of movement of the slider.
By tracing one bulge and the other bulge of this cam groove, the pin allows the switching body to move in opposite directions, and the contacts to be switched by the respective movement positions of the switching body are made to move in opposite directions. With this arrangement, the contacts can be switched depending on the movement of the slider in one direction and the movement in the opposite direction. Moreover, when the slider returns, the switching body can return to the neutral position, and therefore, for example,
It becomes possible to switch the contacts as shown in FIG. 7 and FIG. 7B.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the switch according to the present invention, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a plan view of the switching body showing the cam groove, Fig. 4 is a cross-sectional development view of the cam groove, Figure 5A, Figure 5B, Figure 5C, Figure 5
Figure D is a plan view showing the operation of the switching body, Figure 6 is a configuration diagram of the switch's contacts, and Figure 7A is a diagram of one contact.
ON, OFF diagram, Figure 7B shows ON, OFF of the other contact,
It is an OFF diagram. 1...Wafer, 1c, 1d...Operation chamber, 2...
...Case, 3...Slider, 3a...Operation unit, 3
c...Pin, 4...Spring, 5a, 6b, 7a...
Contact, 8... Switching body, 8a... Cam groove, 9... Slider.

Claims (1)

[Claims for Utility Model Registration] (1) A wafer is provided with a slider that moves back and forth and a switching body that slides in a direction perpendicular to the direction of movement of the slider and is provided with a slider. One of the slider or the switching body is provided with a cam groove that bulges in both directions perpendicular to the sliding direction of the slider, and the other is provided with a pin that traces the inside of this cam groove, and in the wafer,
By the slider that moves together with the switching body at respective movement positions of the switching body where the pin moves in opposite directions when tracing one bulge of the cam groove and when tracing the other bulge. A switch that is equipped with a contact that changes the conduction state. (2) The switch according to claim (1) of the utility model registration, wherein the cam groove is formed in a diamond shape. (3) The switch according to claim (1) of the utility model registration, wherein the cam groove is formed in a heart shape. (4) The switch according to claim 1, wherein the pin is integrally formed at the tip of an elastic arm that is integrally formed with the slider or the switching body.