JPS5847623Y2 - rotary switch - Google Patents

Description

[Detailed description of the invention] This invention is a rotary switch that allows the contact holder to be rotated within two or more rotation angle ranges using a knob. The purpose of this invention is to enable the contact holder to be rotated by the knob, and to rotate the contact holder at rotation angles that are less frequently used without pushing the knob in the axial direction. The object of the present invention is to provide a rotary switch that can be operated safely and that can be rotated only to rotation angles that are rarely used during normal operation, thereby preventing malfunction of the switch.

An embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, 1 is an insulator, 2 is a switch case fixed to cover the front surface of the insulator,
A bushing shaft 3 is inserted through the center of each and protrudes from the front as well.
A contact holder 5 that rotates around the bushing shaft 3 is fitted into the case 2.

A movable contact 6.7 corresponding to the fixed contact group 4 attached to the front surface of the insulator 1 is attached to the holder 5 below the contact pressure spring 8, and a movable contact 6.7 is attached to the back surface as shown in FIG. In the center hole 9 through which the bushing shaft 3 is inserted, there is provided an enlarged diameter hole that constitutes a spring hook step 10, and on both sides of the circular hole, an engager fitting groove 11 which is connected with an engagement notch groove is provided. A notched groove 12 is provided in the eyebrow to determine the rotation range, both ends thereof serve as stopper abutting surfaces 13 and 14, and several blind holes 15 are formed on the back surface into which a spring 16 and an engagement ball 17 are sequentially fitted. .

Reference numeral 18 denotes a tube shaft that is slidably and rotatably fitted onto the bushing shaft 3 and has a portion protruding into the switch case 2. A knob 19 is fixed to the outside of the case 2, and a contact holder is mounted inside the case 2. A retainer 20 formed in a shape similar to the engager fitting groove 11 of No. 5 is fixed.

A groove 21 is formed on the circumferential surface of the retainer 20 opposite to the groove 12 of the contact holder 5, and a stopper retaining surface 22 is formed on one side of the groove 21, so that the engager 20 and the spring hook are formed. Stepped part 1
Loosely fit the return spring 23 with both ends hooked up to the bushing shaft 3.

The contact holder 5 is rotated by the knob 19 and the engager 20 at a rotation angle I at approximately 30° intervals as shown in FIG.

II, III, which rotates within the range of the plate, and which protrudes from the inner surface of the switch case 2.
The stopper 24 faces into the notched groove 12, and the stopper contacts the stopper abutting surface 13 at the rotation angle {circle around (2)}, and the stopper abutting surface 14 at the rotation angle plate.

The engager 20 fitted in the engager fitting groove 11 rotates within the small range of rotation angles I, II, and III while being pushed by the return spring 23, and protrudes from the inner surface of the switch case 2. The second stopper 25 faces into the groove 21,
At rotation angle III, the stopper is attached to the second stopper retaining surface 22.
When engaged as shown in the figure, and pushing the engaging element 20 back by the knob 19 against the elasticity of the spring 23, the second stopper 25 and the stopper retaining surface 22 are disengaged.

On the inner surface of the switch case 2, the first. In addition to the second stoppers 24 and 25, some moderations -26 are formed in groups of three that engage the retaining ball 17 at a rotation angle of ~1~.

Others 27 are the bushing buttons attached to the bushing shaft 3, 28
is a screw rod for mounting with the tube shaft 18 passed through its center protruding from the switch case, and a tightening nut 29 is screwed into this.

The rotary switch of the present invention is used, for example, as a light switch for automobiles, turning it off at a rotation angle of ■, turning on the front interior light and one parking light at the rear at a rotation angle of II, and turning on the front interior light and one parking light at the rear at a rotation angle of II.
At the rotation angle of , the lights are turned on and the headlight circuit is closed, and at the rotation angle of the plate, only the parking lights are turned on.

The light switch is used infrequently and is only used when parking on the street at night, and since the light switch uses angle III, there is a possibility that the light switch may be operated incorrectly due to the angle of rotation of the plate when rotating the knob 19. If you continue to drive without noticing this error, it will be a violation of the law.

In the embodiment shown above, the holder 20 has a rotation angle of I and a rotation angle of I.
Between the rotation angle II, the contact holder 5 can be freely rotated and rotated in conjunction with the contact holder 5, but at the rotation angle III, as shown in FIG. It is not possible to rotate the retainer 20 and the contacts 1 to holder 5 to the angle of rotation of the plate, but in order to force them to rotate as shown in FIG.
must be compressed to move the engager 20 forward and escape from the holding range of the second stopper 25.

When the plate rotates from the rotation angle to the rotation angle III, the engagement element 20 and the knob 19 automatically return to the front by the elasticity of the return spring 23.

As is clear from the above example, the present invention provides for the retainer 20 to be rotated by the knob 19 and engaged with the contact holder 5 in a rotational direction but movably in the axial direction, by the first stopper 24 of the contact holder 5. The second stopper 25 restricts rotation within the allowable rotation angle range, smaller than that range, and rotates the retainer 20 to a rotation angle at which the contact holder 5 is stopped from rotating by the first stopper. Since the switch must be pressed against the spring 23, the knob 19 can be operated by clearly dividing the rotation range in which the switch is operated frequently and the rotation range in which the switch is operated infrequently. At the same time, the erroneous operation of the data switch described above can be reliably prevented.

[Brief explanation of the drawing]

The attached drawings show one embodiment of the present invention, and Fig. 1 is a longitudinal cross-sectional side view of the central part of the main part, Figs. 2 and 3 are enlarged front views cut along line A-A in Fig. 1, and Fig. 4 is a partially exploded view. FIG. 2→Switch case, 5→Contact holder, 10→
Spring hanging step part, 11 → Engagement fitting groove, 13, 14 → Stopper abutment surface, 18 → Pipe shaft, 19 → Knob, 20 → Engagement element, 2
2→stopper engagement surface, 23→spring, 24→first stopper, 25→second stopper.

Claims (1)

[Scope of utility model registration request] Inside the switch case, there is a contact holder that rotates on the fixed contact in response to the fixed contact provided on the insulator, and a retainer that is fixed to the tip of the contact holder and is restrained in the rotational direction but movably engaged in the axial direction. a first stopper for allowing the contact holder to rotate within a certain range; and a spring for allowing the contact holder to rotate within a certain range. A second stopper is provided to allow the engaging element in the pressed state to rotate in a range smaller than the permissible rotation angle range of the contact holder, and the knob and retainer are held together against the elasticity of the elastic spring. A rotary switch characterized in that, when pressed, the retainer is moved out of the engagement range of the second stopper, and the contact holder can be rotated in conjunction with the retainer.