JP3103880B2 - Rotary DIP switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DIP switch for setting a digital code value in accordance with a rotation angle position, and more particularly to a mechanism for obtaining a click feeling (a sense of moderation) when switching the set value and a positioning thereof.

[0002]

2. Description of the Related Art FIG. 2 is an exploded view of a conventional rotary DIP switch. Housing 11 made of insulated molded product
Have six terminals 12a to 12f protruding inward and outward and attached to the opposing side plates.
The contact plate 15 is accommodated in the circular recess 13. One end of each of the four arms is formed integrally with the contact plate 15, and the free ends of the arms have movable contacts 15 a to 15 d connected to the terminals 12 a to 12 d. 12f are provided on the four inner ends in close proximity to each other, and the common contact 1
5e is always in elastic contact with one of the remaining two terminals 12a to 12f. These two terminals are electrically connected to each other.

[0003] On a contact plate 15, a rotor 16 made of a molded product of an insulating material is accommodated in a circular recess 13. The rotor 16 is in the form of a thick disk substantially coaxial with the circular recess 13. The upper half of the housing 11 on the side opposite to the bottom plate has a small diameter, and its peripheral edge is formed along the circumferential direction. Click irregularities 17 are formed. A driver groove 18 extending in the diameter direction is formed at the center of the upper surface of the rotor 16.

[0004] A cover 21 formed by pressing a metal plate is provided on the upper surface of the housing 11 so as to be in close proximity to the upper surface of the housing 11.
Are integrally bent and engaged with engaging projections 22a and 22b (22a are hidden in the figure) on the side surface of the housing 11, and the cover 21 is attached to the housing 11. Further, the locking pieces 21 are inserted from the ends of the leg pieces 21a and 21b.
a and 21d are integrally projected, and these are
Is bent to the bottom.

[0005] A circular opening 24 is formed in the cover 21, and a portion of the upper surface of the rotor 16 where the driver groove 18 is formed is separated to the outside. The lower portion of the portion of the rotor 16 where the irregularities 17 are formed has a large diameter and a flange 16a is formed.
An O-ring 25 is interposed between the upper surface of a and the cover 21 to seal the inside of the housing 11.

[0006] Two half-shaped grooves 27a and 27b are formed on one circle in a circle with the circular opening 24, thereby forming semicircular arms 28a and 28b.
Clicking projections 29a and 29b projecting toward the housing 11 are formed at the center portions of the respective portions 8a and 28b, and these are elastically in contact with the clicking unevenness 17 of the rotor 16. Therefore, when the tip of the driver is inserted into the driver groove 18 and the rotor 16 is rotated, the click projections 29a, 2
Each time 9b moves from the concave portion of the click irregularities 17 to the next concave portion, a click feeling (feel) is obtained. Although not shown, the drive projections projecting from the bottom surface of the rotor 16 engage with one or more of the contacts 15a to 15d in a state where the click projections 29a and 29b are located in the respective recesses of the click unevenness 17. Then, press it toward the terminal side to make contact 15
One or more of a to 15d elastically contact corresponding ones of the terminals 12a to 12e. The codes corresponding to the combinations of the contact states of the contacts and the terminals are the terminals 12a to 12e.
The numerical value indicating this code is displayed on the display unit 31 on the upper surface of the cover 21, and the value indicated by the arrow of the driver groove 18 in the display indicates the setting code at the rotation value of the rotor 16.

[0007]

In the conventional rotary DIP switch, the rotor 16 is provided with a click feeling and a click unevenness 17 for obtaining its positioning only for its operation, and the thickness of the rotor 16 is accordingly reduced. In other words, the thickness of the DIP switch becomes large, which makes the miniaturization difficult. Click arms 28a, 28b
Therefore, the area of the display unit 31 could not be large, and the display was small and there was a risk of erroneous setting.

[0008]

According to the present invention, the click projections and depressions are formed on the peripheral surface of the rotor, and the protrusion that elastically contacts the click projections and depressions on the peripheral surface of the rotor from one edge of the cover is integrally formed. It is bent and extended.

[0009]

FIG. 1 shows an embodiment of the present invention.
Parts corresponding to those in FIG. 2 are denoted by the same reference numerals. In this embodiment, click irregularities 41 are formed on the circumferential surface of the rotor 16 along the circumferential direction. Also, the leg pieces 21a, 2 of the cover 21
Short bent pieces 42a and 42b are integrally bent and extended to the housing 11 side from a pair of opposing edges where no 1b is formed to face the peripheral surface of the rotor 16, and the bent pieces 4a
Click projections 43a, 43b (43b are hidden in the figure) are formed by being pushed inside each other at the central portions of 2a, 42b, and these projections 43a, 43b are in elastic contact with the click projections 41. doing. Cut grooves 44a and 44b are formed along the bent edges of the bent pieces 42a and 42b so that the elasticity can be easily obtained.

In this example, a holding piece 46 made of a metal plate is arranged between the contact plate 15 and the rotor 16, and small holes 47a from which the contacts 15a to 15d protrude.
47b are formed, and the corresponding one of the drive projections 48 integrally protruding from the bottom surface of the rotor 16 are the contacts 15a to
15d and corresponding terminals can be elastically pressed, and when the pressing is suddenly released, the rotor 1
The vibration of the contact is suppressed and the contact piece 46 is pressed so that the contact is not bent by the rotation of 6.

In this embodiment, the upper surface 4 of the housing 11
Short pillars 11a to 11d are integrally erected at two corners, a cover 21 is disposed on the pillars 11a to 11d, and a circular recess 13 of the housing is shallow.
Is not accommodated, and the O-ring 25 is interposed between the upper surface of the housing 11 on the periphery of the circular recess 13 and the rotor 16, so that the contact portion between the contact and the terminal is airtight to the outside.

The driver groove 18 of the rotor 16 is formed in a cross shape, and low circular projections 49 are formed integrally on the upper surface of the rotor 16 at regular intervals with respect to the center thereof.

[0013]

As described above, according to the present invention, the click irregularities 41 are formed on the peripheral surface of the rotor 16, and the click protrusions 43a and 43b bent and extended from the cover 21 are formed on the irregularities 41. Since it is elastically pressed from the peripheral surface side of the rotor 16, a click feeling and positioning can be obtained, so that the thickness of the rotor 16 can be made thinner than before, and the overall shape can be made smaller accordingly.

In addition, the entire upper surface of the cover 21 other than the circular opening 24 can be used for the display section 31, and the display is large and the possibility of erroneous setting is small.

[Brief description of the drawings]

FIG. 1A is an exploded perspective view showing an embodiment of the present invention, and FIG. 1B is a sectional view of a rotor 16;

FIG. 2 is a perspective view showing a conventional rotary DIP switch.

Claims (1)

(57) [Claims] A metal plate having a contact plate disposed in a housing made of an insulating material having a plurality of terminals protruding inward and outward, a rotor provided with insulation on the contact plate, and a central opening formed on the rotor. A cover made of a plate is arranged, and both ends of the cover are bent and extended,
By engaging the housing and changing the relative angular position of the rotor with respect to the housing through the opening, one or more of the movable contacts integrally formed on the contact plate are pushed by the protrusion of the rotor. A rotary DIP switch elastically in contact with one or more of the terminals; a click irregularity formed on a peripheral surface of the rotor; and a bend extending from one edge of the cover for clicking on the peripheral surface of the rotor. A rotary type DIP switch, comprising: a projection that elastically contacts unevenness.