JPH0429460Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to a push button switch with a selection ring, and more particularly to a coupling device for connecting an internal rotary cylinder for opening/closing selection with an externally operated selection ring.

[Prior art and its problems]

An example of a conventional push button switch with a selection ring is shown in FIG.
In the figure, a flat plate-shaped receiving rod 3 is screwed to the lower end of the first push rod 2, on which the button 1 is fitted at the upper end, and two pinch pins, only partially shown, are attached to the inner surface of the receiving rod 3. has been planted. A second push rod 5 is disposed coaxially with the lower end surface of the receiving rod 3, and an outer cam 7 that can be engaged with a switch 6 is screwed to the lower end of the second push rod 5. First push rod 2
A selection ring 8 is rotatably arranged on the outer periphery concentric with the first push rod 2, and the selection ring 8 is connected to the tube stud 9 engaged with the first push rod 2 and the pin 4 of the receiving rod 3 which is caulked to the tube stud 9. case 11 via inner cam 10 that engages with
are guided by. Further, when the selection ring 8 is rotated, the inner cam 10 is interlocked with the two pins 4 that engage with the cam surface of the inner cam 10 to move in the axial direction, and the second pusher is moved through the receiving rod 3. The force is transmitted to the rod 5. The second push rod 5 has a receiving plate 12 crimped onto the end surface that comes into contact with the receiving rod 3 to directly receive rotational force and pressing force. In the case of pressing a push button switch, the button 1, the first push rod 2, the receiving rod 3, the receiving plate 12,
Force is transmitted via the second push rod 5 and the outer cam 7, and the switch 6 is operated.

With the above configuration, this push button switch is different from that used in ordinary push button switches because the outer cam 7 is used for both selecting the switch 6 by rotating the selection ring 8 and pushing the switch 6. Moreover, since the push operation is performed through the above-mentioned members and all the members are arranged in series, there is a drawback that the depth dimension of the operation part assembly becomes large.
Also, such a push button switch is switch 6.
There are a wide variety of selection controls, and it is necessary to be able to respond to them, and in order to support a wide variety of programs, the inner cam 10,
Since the outer cam 7, the receiving plate 12, etc. are screwed or caulked, it is not easy to change the program, and the selection ring 8 has to be smaller than its mounting diameter, which limits the control range. There were also drawbacks.

[Purpose of invention]

The object of this invention is to provide a push button switch with a selection ring which eliminates the above-mentioned drawbacks of the prior art and can accommodate a wide variety of control programs without reducing the workability of assembly or mounting to a panel.

[Key points of the idea]

The key points of this invention are that, in order to achieve the above-mentioned purpose, a selection ring assembly is rotatably guided in a cylindrical part that also serves as a mounting mechanism to a panel protruding from the front side of the case, and the selection ring is In the push button switch with a selection ring, the push button switch is equipped with a push rod that is freely guided in the axial direction within the assembly and moves in the axial direction in response to its own pushing operation and rotational operation of the selection ring to open and close the switch. The selection ring assembly has a pair of notches 25e on the same diameter line on the front end face, and a selection ring 25 in which a plurality of engaging pieces 25a are extended and each has a protrusion 25b facing inward on the back side. It is inserted into the inside of the selection ring 25, has a recess 26a on its outer periphery into which the protrusion 25b of the engagement piece is fitted, and has a recess 26a on its inner periphery that engages with the control groove 22 provided on the outer periphery of the push rod. The selection ring 25 and the rotary cylinder 26 are equipped with a rotating cylinder 26 having a mating protrusion 26c.
6 and one end of which is engaged with the notch 25e of the selection ring, the other end of the coupling member 35 presses the protrusion 25b of the selection ring to fit into the recess 26a of the rotary cylinder. The selection ring 25 and the rotary cylinder 26 are combined by this, and the selection ring can be assembled after the main part of the switch body is attached to the assembly panel, and the program control groove is configured as a removable block. The main point is that it corresponds to the expansion of control programs.

[Example of idea]

Figures 1 to 5 show an embodiment of the push button switch with a selection ring according to this invention. 3 is an exploded perspective view of the switch control section, FIG. 4 is an exploded perspective view showing the assembly process of FIG. 1, and FIG. 5 is an exploded view of the main parts of the push rod. In the figure, parts having the same functions as those of the conventional device shown in FIG. 7 are given the same reference numerals to avoid redundant explanations and will be explained with emphasis on the differences. The push rod 21, which has a cylindrical shape and has the button 1 removably fitted to its upper end, has a control groove 22 and an engagement groove 23 on its outer periphery that engage with a rotating cylinder and an inner cam, which will be described later, to control the switch 6, respectively. is provided, and a leg piece 24 is provided at its lower end.
a, 24b are extended. A rotary cylinder 26 that is coupled to the selection ring 25 and transmits rotational force is disposed on the outer peripheral side of the push rod 21, and the selection ring 25 and the rotary cylinder 26 are connected to each other through a plurality of recesses 26a provided on the outer periphery of the rotary cylinder 26. This is achieved by engagement of the ring-shaped engagement piece 25a of the selection ring 25 with a protrusion 25b provided on the inner wall, and a detachable ring-shaped coupling member 35. The coupling member 35 includes a ring member 35a that fits between the operation ring 25c of the selection ring 25 and the ring-shaped engagement piece 25a, and a ring-shaped engagement piece 25 that is provided at the lower end of the inner wall of the ring member 35a.
A locking claw 35b that engages with a groove 25d provided on the outer periphery of the ring a, and a locking arm 35 that fits into a notch 25e provided on the operating ring 25c and facing along the axis.
It is equipped with c. The inner wall of the rotary cylinder 26 has two protrusions 26b that engage with the control groove 22 of the push rod 21.
26c are provided to face each other, and a plurality of leg pieces 26 each have a stepped portion 26d and a claw 26e on the lower side.
f is provided, and by sandwiching the protrusion 5a of the case 5 between the stepped portion 26d and the claw 26e of the leg piece 26f, the rotary cylinder 26 is prevented from coming off, and the rotary cylinder 26 is held against the case 5. It is rotatably supported. The inner cam 27 has a protrusion 27a that loosely fits into the engagement groove 23 of the push rod 21 inside the leg piece 26f of the rotary cylinder 26.
It is provided with a plurality of protrusions 27c standing upright from the protrusion 2.
The aforementioned protrusion 27a is provided inside the upper end of the protrusion 7c, and a protrusion 27d extending along the axis is provided on the outer peripheral surface of the protrusion 27c. An outer cam 28 is attached to the outer circumferential side of the inner cam 27, and a groove 28a is provided on the inner circumferential surface of the outer cam 28, with which the protrusion 27d of the inner cam 27 engages, and a rotating cylinder is provided on the outer circumferential side of the upper end of the groove 28a. 26
A notch 28b into which the leg piece 26f fits is provided, as well as a collar 28c and a notch cam 28d. A base 29 attached to the case 5 has a push piece 30 operated by the inner cam 27 and a receiving plate 31 on which the notch cam 28d of the outer cam 28 comes into contact.
is stored, and the receiving plate 31 is attached to the protrusion 29 of the base 29.
a and is pressed toward the notch cam 28d by a return spring 32. The control groove 22 of the push rod 21 is as shown in FIG.
A pair of inclined grooves 22a are arranged 180° apart.
and a pair of horizontal grooves 22b located in the middle of the inclined groove 22a, that is, at a position shifted by 90 degrees, and extending along the circumference toward the back side (downward in the figure) of the inclined groove 22a, and the inclined groove 22a and the horizontal groove 22b. A vertical groove 22c that branches from the connection point and extends toward the front side (upward in the figure) and runs along the axis, and an intermediate groove of the horizontal groove 22b and an inclined groove 22.
A vertical groove 22d along the axis and a stopper 22e that engages with the protrusions 26b and 26c of the rotary cylinder 26 are provided.

In the main component configuration described above, as shown in FIG.
Insert the nut 4 from the flat side of the mounting hole 40a.
It is fixed by tightening the threaded portion of the case 5 with 2. After that, the selection ring 25, which is a switch operation part, can be attached, so the diameter of the selection ring 25 is not restricted by the diameter of the mounting hole 40a. Therefore, since the diameter of the operating portion can be determined freely, a selection ring with good operability can be obtained, and since the degree of freedom in size is increased, the range of selection control can be expanded. The selection ring 25 can be coupled to the rotary tube 26 simply by fitting the coupling member 35, and the button 1 can be attached in the same manner.

Next, the operation will be explained. First, when the push button is operated, it is assumed that the positional relationship between the control groove 22 of the push rod 21 and the protrusions 26b, 26c of the rotary cylinder 26 is such that the protrusions 26b, 26c are in the vertical groove 22c as shown in FIG. 1 is pressed, the push rod 21 has the protrusions 26b and 26c of the rotary cylinder 26 facing the vertical groove 22c of the control groove 22, and the protrusion 26
Since the downward sliding movement is not obstructed by b and 26c, it moves downward. As the push rod 21 moves downward, the protrusion 27 is inserted into the engagement groove 23 of the push rod 21.
The inner cam 27 engaged by the button a is pushed down, which pushes down the pusher piece 30 and opens and closes the switch 6. When the pressure on the button 1 is released, the push rod 21 is moved to the push piece 30 and the inner cam 2 by the force of a return spring (not shown) installed in the switch 6.
It is pushed up through 7.

Next, when the selection ring 25 is rotated when the twist switch is operated, and the rotary cylinder 26 integrally connected to the selection ring 25 is rotated to the left in FIG. The control groove 22 moves along the inclined groove 22a of the control groove 22. At this time, since the rotary cylinder 26 is held in the case 5, the push rod 21 is pushed down by the protrusions 26b and 26c, and the outer cam 28 rotates together with the rotary cylinder 26, but the inner cam 27 also rotates relative to the push rod 21. Therefore, the inner cam 27 can rotate at the same time, and the inner cam 27 can move up and down relative to the outer cam 28. As a result, when the push rod 21 is pushed down, the protrusions 26b and 26c of the rotary cylinder 26, through which the switch 6 is opened and closed via the push piece 30 that is pushed down in conjunction with the inner cam 27, are moved to the stopper 22e of the control groove 22.
When the position is reached, the notch cam 28d of the outer cam 28
When the notch gets over the protrusion 31a of the receiving plate 31, a notch feeling can be obtained. In this state, the switch 6 is being operated to open or close, so the button 1 is in a pressed state. This opening/closing operation can be canceled by rotating the selection ring 25 in the opposite direction to the aforementioned rotation direction. When the selection ring 25 is rotated, the rotary cylinder 26 is rotated and the protrusions 26b and 26c are moved to the inclined groove 22a of the control groove 22. As a result, the push rod 21 is automatically returned to its original position since it is pressed upward by the return spring of the switch 6 as described above. After the protrusions 26b and 26c of the rotary cylinder 26 return to the positions of the control grooves 22 of the push rod 21 shown in FIG.
6 rotates to the right in Fig. 5,
In this case, since the protrusions 26b and 26c move in the horizontal groove 22b of the control groove 22, the push rod 21 will not be pushed down and the switch 6 will not be opened or closed. When the protrusions 26b and 26c come to a position facing the stopper 22e of the control groove 22, the outer cam 2
A notch feeling can be obtained by the notch cam 28d of No. 8 and the receiving plate 31. In this state, even if the button 1 is pressed, the projections 26b, 26c are prevented from moving by the stopper 22e, so the function of the push button switch is locked. To restore the function of the push button switch, the selection ring 25 may be rotated in the opposite direction to that described above, and the rotating barrel 26 may be rotated to the left in FIG.

In this embodiment, the engagement between the inner cam 27 and the outer cam 28 is achieved by the protrusion of the inner cam 27 and the groove 2 of the outer cam 28.
8d, it goes without saying that the inner cam 27 may be provided with a groove and the outer cam 28 may be provided with a protrusion for engagement.

Next, another embodiment of this invention will be described using FIG. 6. FIG. 6 shows a perspective view of the push rod 21, in which the same parts as in the previous embodiment are given the same reference numerals. In the figure, the difference from the previous embodiment is that the part with the control groove 22 is formed as two block pieces 36, and the claw 36a provided on each block piece 36 is engaged with the hole 36b provided on the push rod 21. This is the point I made. If the block piece 36 of the control groove is separated and a large number of control grooves with different shapes are prepared as in this embodiment, the opening/closing control of the switch can be changed by simply replacing the block piece 35.

[Effect of idea]

According to this invention, the connecting part of the selection ring to the rotary cylinder can be separated from the ring body and attached later, and the locking arm of the connecting part also serves as a pointer, making the instructions clear and preventing erroneous operation. In addition, by attaching the selection ring later, it is possible to install a selection ring larger than the diameter of the mounting hole, thereby making it possible to provide a push button switch with a selection ring that is easy to operate.

[Brief explanation of drawings]

1 to 5 are views showing one embodiment of the push button switch with a selection ring according to this invention. Figure 3 is an exploded perspective view of the switch control unit, Figure 4 is an exploded perspective view showing the assembly process of Figure 1, Figure 5 is an exploded view of the main parts of the push rod, and Figure 6 is another embodiment based on this invention. FIG. 7 is an exploded perspective view of a push rod which is a main part of a push button switch with a selection ring, and FIG. 7 is a longitudinal sectional view showing an example of a conventional push button switch with a selection ring. 5... Case, 6... Switch, 21... Push rod, 22... Control groove, 25... Selection ring, 25
a...Engagement piece, 25b...Protrusion, 26...Rotating tube, 26a...Recess, 26b, 26c...Protrusion,
35...Connecting member, 35a...Ring portion, 35
b...Latching claw, 35c...Latching arm, 40...Panel.

Claims (1)

[Claim for Utility Model Registration] A selection ring assembly that is rotatably guided in a cylindrical part that also serves as a mounting mechanism to a panel protruding from the front side of the case, and a selection ring assembly that is axially guided within the selection ring assembly. A push button switch with a selection ring, which is provided with a push rod that is freely guided and moves in the axial direction in response to its own push operation and rotational operation of the selection ring to open and close the switch, wherein the selection ring assembly is , a selection ring 25 having a plurality of extending engagement pieces 25a each having a pair of notches 25e on the same diameter line on the front end face and protrusions 25b facing inward on the back side; and the selection ring 25. a protrusion 26c that is inserted into the inside of the push rod, has a recess 26a on its outer periphery into which the protrusion 25b of the engagement piece is fitted, and has an inner periphery that engages with a control groove 22 provided on the outer periphery of the push rod;
A rotating barrel 26 with A push button switch with a selection ring, characterized in that the selection ring 25 and the rotary tube 26 are connected by pressing the protrusion 25b and fitting into the recess 26a of the rotary tube.