JPH0517765Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a selector pushbutton switch that can select a switch circuit of the pushbutton switch by turning an operating ring.

<Prior art> A selector push button switch generally includes a rotation shaft that rotates within a predetermined angle range with respect to the housing;
It is rotated in conjunction with the rotation axis, and a push button is placed on the front end surface and a pressing cam for selectively pressing the switch follower is placed on the rear end surface. It is equipped with an operating shaft that can be slid on. The rotation shaft usually has a
The operation ring (operation knob) is attached.

In conventional selector pushbutton switches,
Although various mechanisms are used to attach the operating ring to the rotating shaft, basically fixation by screwing using a set screw or the like or pin connection using a dowel pin or the like is employed.

<Problems to be Solved by the Invention> According to the conventional mounting method, due to the external dimensions of the switch, it is necessary to use extremely small set screws, etc., which are usually M3 or smaller, and knock pins, etc., which are φ3 or smaller. When the operating ring is rotated, considerable force is applied in the circumferential direction to the rotating shaft, so there are problems such as the threads for screwing in set screws etc. being easily crushed, and the notch holes for inserting dowel pins etc. being loose. There was a problem. Furthermore, although many rotary shafts are integrally molded from resin, molding a female thread is usually difficult with resin molding, and therefore there is a problem in that machining is always required.

<Means for Solving the Problems> The present invention was made to solve the above problems, and its configuration will be explained with reference to FIGS. 1 to 3, which are embodiment drawings. The idea is to attach an operating ring 3 to the outer periphery, and a rotating shaft 2 that rotates within a predetermined angle range with respect to the housing 1, and a rotating shaft 2 that rotates in conjunction with the rotating shaft 2 and is pushed against the front end surface. In a switch equipped with an operating shaft 4 that can slide in the axial direction within the rotation shaft 2 with a button 5 and a pressing cam 6 disposed on the rear end surface, projections 3a and 3a are provided on the inner periphery of the operating ring 3. will be established. The outer periphery of the rotation shaft 2 has a vertical groove 2 into which the projections 3a, 3a can be inserted from the front in the axial direction.
a, 2a, and protrusions 3a, 3a that communicate with the rear ends of the vertical grooves 2a, 2a and extend in a predetermined direction in the circumferential direction.
Horizontal grooves 2b, 2b into which can be inserted are provided. Further, on the outer periphery of the rotating shaft 2, a plate spring-like projection 2c is provided which projects in the above-mentioned predetermined direction in the tangential direction. Further, the inner circumference of the operating ring 3 is provided with a vertical groove 3b into which the tip of the leaf spring protrusion 2c can be inserted.

The protrusion 3a of the operating ring 3 is inserted into the vertical groove 2a of the rotation shaft 2.
When the operating ring 3 is rotated in the above-mentioned predetermined direction and the protrusion 3a is inserted into the horizontal groove 2b, the tip of the leaf spring-like protrusion 2c of the rotating shaft 2 aligns with the longitudinal direction of the operating ring 3. It is configured to fit into the groove 3b.

<Function> In the state in which the leaf spring-like protrusion 2c is fitted into the vertical groove 3b of the operating ring 3, the operating ring 3 has the protrusion 3a on both sides of the horizontal groove 2b in the axial direction with respect to the rotation shaft 2, and In the above-mentioned predetermined direction in the circumferential direction, the protrusion 3a is attached to the end surface of the horizontal groove 2b, and further in the opposite direction in the circumferential direction, the tip surface of the leaf spring-like protrusion 2c is attached to the longitudinal groove 3b of the rotation shaft 3. By abutting against the side surfaces of each of the parts, the parts can be mounted with relative displacement regulated, and no set screws or the like are required.

<Example> An example of the present invention will be described below based on the drawings.

FIG. 1a shows a front view of the rotating shaft 2 of the embodiment of the present invention, and FIGS. 1b and 1c show left and right side views, respectively. Further, FIG. 2a shows a front view of the operating ring 3 mounted on the rotating shaft 2, and FIG. 2b shows a sectional view taken along line B-B. Furthermore, FIG. 3 shows a longitudinal sectional view of the entire operating section M of the embodiment of the present invention.

To explain the overall configuration of the operation part M, as shown in FIG. A rotating shaft 2 that can be rotated is fitted. A through hole 2d is bored in the center of this rotation shaft 2.
The operating shaft 4 is inserted into the inner part d. The operation shaft 4 is rotated in conjunction with the rotation shaft 2 and is slidable in the axial direction of the rotation shaft 2.

A tip holder 7 is screwed to the front end surface of the operating shaft 4, and a push button 5 is attached to the front of the tip holder 7.
is embedded. A compression coil spring 8 is interposed between the tip receiver 7 and the rotating shaft 2, and the compression coil spring 8 urges the push button 5 forward. On the rear end surface of the operating shaft 4,
A cylindrical pressing cam 6 for pressing the followers 101 and 102 of the switch section S coupled to the rear of the operating section M is fixed. The outer periphery of the rear end of this press cam 6 has a non-uniform shape, and depending on the rotation position of the rotation shaft 2 when the push button 5 is pressed, which of the followers 101 and 102 of the switch section S is configured to be selectively pressed.

A cylindrical cam 9 having a wave-shaped outer circumferential surface is attached to the outer circumference of the operating shaft 4 so as to be able to slide relative to each other only in the axial direction, and a notch member 10 is pressed by a spring 11 onto this wave-shaped outer circumference. As a result, the rotating shaft 2 and the operating shaft 4 are configured to be able to stand stably at a plurality of predetermined rotating positions.

Further, this operation part M includes a mounting ring 12 screwed into a male threaded part formed on the outer periphery of the housing 1.
And the adjustment ring 13 allows it to be fixed to a panel or the like.

Now, in the operating part M as described above, the outer peripheral surface of the rotation shaft 2 has vertical grooves 2a, 2a extending in the axial direction from the front end surface, and each of the vertical grooves 2a, 2a, as shown in FIG.
Lateral grooves 2b, 2b are formed which communicate with the rear ends of the grooves a, 2a and extend clockwise in the circumferential direction.
Further, a plate spring-like protrusion 2c is formed on the rotation shaft 2 so that its tip slightly protrudes from the outer periphery. This leaf spring-like protrusion 2c can be elastically deformed in the radial direction of the rotation shaft 2 by being pressed from the outside.

Further, on the inner circumferential surface of the operation ring 3, there are protrusions 3 which can be fitted into the above-mentioned vertical grooves 2a, 2a from the vertical direction, and which can be fitted into the horizontal grooves 2b, 2b from the circumferential direction.
a, 3a are formed. Furthermore, one protrusion 3a
A first vertical groove 3b is formed at a predetermined angle in the counterclockwise direction from the first vertical groove 3b, into which the tip protrusion of the leaf spring-like projection 2c described above can be inserted. This first vertical groove 3b
A through hole 3d is bored in the installation portion. Moreover, this first vertical groove 3b and the above-mentioned one protrusion 3a
A second vertical groove 3c, which is equivalent to the first vertical groove 3b, is formed between the first vertical groove 3b and the first vertical groove 3b.

The arrangement positional relationships between the vertical grooves 2a, 2a of the rotation shaft 2 and the leaf spring-like projections 2c, and the projections 3a, 3a of the operating ring 3, and the vertical grooves 3b, 3c are as shown in FIG. . That is, FIG. 4a shows the rotation axis 2
from the front end side of the operating ring 3, its protrusions 3a, 3
FIG. 3 is a front view showing a state in which parts a are inserted into vertical grooves 2a and 2a, respectively. At this time,
As shown in the figure, the tip of the leaf spring-like projection 2c is configured to fit within the second longitudinal groove 3c of the operating ring 3.

FIG. 4b shows the operating ring 3 from the state shown in FIG. 4a.
FIG. 3 is a front view showing a state in which the holder has been rotated clockwise about the rotation shaft 2 to the extent that the protrusions 3a, 3a abut against the end surfaces of the lateral grooves 2b, 2b. During this rotation, the leaf spring-like protrusion 2c is pressed and deformed inward in the radial direction of the rotation shaft 2 on the inner peripheral surface of the operating ring 3, but when the state shown in FIG. The tip of the spring-like protrusion 2c is configured to fit into the first longitudinal groove 3b of the operating ring 3.

Therefore, in the state shown in FIG. 4b, the operating ring 3 has its protrusions 3a, 3a in front and back in the axial direction of the rotation shaft 2 in contact with both side surfaces of the lateral grooves 2b, 2b, causing relative displacement. In addition, in the clockwise direction of the circumference, the protrusions 3a, 3a are regulated by the lateral grooves 2b,
2b, and also in the counterclockwise direction, one side of the first longitudinal groove 3b abuts the tip surface of the leaf spring-like protrusion 2c, and its relative displacement is regulated. It turns out. As a result, without using a set screw or the like, the operating ring 3 in the state shown in FIG. 4b is connected to the rotating shaft 2 in a state in which displacement is restricted in all directions.

When removing the operating ring 3 from the rotating shaft 2,
The operating ring 3 can be rotated counterclockwise from the position shown in FIG. 4b by pressing and deforming the leaf spring-like protrusion 2c with a thin rod-shaped object from the outside through the through hole 3d of the operating ring 3. is completed, and the same figure a
By setting it in this state, it can be removed forward in the axial direction.

In the above embodiments, the second longitudinal groove 3c of the operating ring 3 is not necessarily required, but it is preferable to form the second longitudinal groove 3c so that the attachment/detachment operation becomes smooth.

<Effect> As explained above, according to the present invention, the vertical groove 2a, the horizontal groove 2b, and the leaf spring-like protrusion 2c on the outer periphery of the rotation shaft 2, the protrusion 3a on the inner periphery of the operating ring 3, and the first Because of the longitudinal groove 3b, the operating ring 3 can be connected to the rotating shaft 2 with relative displacement in all directions regulated without using a set screw or a dowel pin. This solves the problem of loose screws or loose holes. In addition, the rotation axis 2 has
There is no need to process a female thread for screwing in a set screw, etc., and it can be integrally molded from resin or the like, and fixing parts such as a set screw are not required.

[Brief explanation of the drawing]

Figures 1a, b, and c are respectively a front view, left side view, and right side view of the rotating shaft 2 of the embodiment of the present invention, and Figures 2a and b are front views of the operating ring 3 of the embodiment of the present invention, respectively. , BB sectional view, FIG. 3 is a vertical sectional view showing the overall configuration of the operating section of the embodiment of the present invention, and FIGS. 4 a, b
2A and 2B are front views showing a state in which an operating ring 3 is fitted into a rotating shaft 2 according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Housing, 2...Rotation shaft, 2a...Vertical groove, 2b...Horizontal groove, 2c...Leaf spring-like projection, 3...
...Operation ring, 3a...Protrusion, 3b...First vertical groove, 3c...Second vertical groove, 3d...Through hole, 4...
...Operation axis, 5...Push button, 6...Press cam, M
...Operation section, S... Switch section.

Claims (1)

[Scope of utility model registration request] An operating ring is attached to the outer periphery of the housing, and a rotating shaft rotates within a predetermined angle range with respect to the housing. In a switch comprising an operating shaft that is provided with a pressing cam and can slide in the axial direction within the rotating shaft, a projection is provided on the inner periphery of the operating ring, and the outer periphery of the rotating shaft is provided with a projection. a vertical groove into which the protrusion can be inserted from the front in the axial direction; a horizontal groove that communicates with the rear end of the longitudinal groove and extends in a predetermined direction in the circumferential direction into which the protrusion can be inserted; A leaf spring-like protrusion is provided on the inner periphery of the operating ring, a vertical groove into which the tip of the leaf spring-like protrusion can be fitted, and the protrusion of the operating ring is fitted into the vertical groove of the rotation shaft. When the rotating shaft is rotated in the predetermined direction, the tip of the leaf spring-like protrusion of the rotating shaft fits into the vertical groove of the operating ring, so that the operating ring is attached to the rotating shaft, and the operating ring is attached to the rotating shaft. A selector pushbutton switch characterized in that it is configured so that relative displacement in the direction and circumferential direction is regulated.