JPH0416328Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an operating mechanism for a push button switch with a selection ring, which has the functions of a push button switch and a twist switch using one switch.

[Conventional technology]

A conventional device of this type of push button switch with a selection ring is shown in FIGS. 1 and 2, with FIG. 1 being a longitudinal cross-sectional view thereof, and FIG. 2 being a cross-sectional view taken along the line shown in FIG. 1.

In FIG. 1, 5 is a cylindrical case;
A base 6 is fixed to the case 5 by screws (not shown). A cylindrical first push rod 2 that is slidable in the axial direction is provided inside the case 5, and a button 1 is attached to the head of the first push rod 1 by fitting, and a guide plate is provided at the lower end. 7 is attached with screws. The guide plate 7 has two guide pins 71 and 72 as shown in FIG. 2, and the guide pins 71 and 72 are inserted into grooves 52 and 53 formed in the inner wall of the case 5. A rotatable cylindrical selection ring 3 is provided on the upper side of the case 5, and a cylindrical inner cam 12 is integrally attached to this selection ring 3 with a tube stud 4. A steel ball 3a inserted between the selection ring 3 and the case 5 is pressed against the case 5 by a compression spring 3b.
As is clear from FIG. 2, the inner cam 12 has protrusions 12a and 12a facing each other.
b, 12b are provided, and these protrusions 12a, 12
a, 12b, 12b extend below the guide plate 7, and in FIG.
a is shown. A receiving plate 9 is integrally connected to the upper end of a cylindrical second push rod 8 which is slidable within the case 5 and the base 6, and this receiving plate 9 has respective protrusions 12a of the inner cam 12, Protrusion 9 inserted between 12b and between protrusions 12b, 12b
a, 9a (see FIG. 2) are formed. Second
An outer cam 10 is fixed to the lower end of the push rod 8 with a screw, and this outer cam 10 controls opening and closing of a switch 11 attached to the lower end of the base 6. In addition, S ₁ , S ₂
are return springs, B is a bellow, and N is a panel mounting nut that inserts the panel between it and the gasket P to fix the switch.

The push button operation of this switch is performed by pushing button 1. In FIG. 1, when the button 1 is pressed, the receiving plate 9 and the second push rod 8 are pressed via the first push rod 2 and the guide plate 7. As a result, the opening/closing of the switch 11 is controlled via the outer cam 10. When the button 1 is released, the first push rod 2,
The second push rods 8 are returned to their original positions by return springs S ₁ and S ₂ , respectively. The next twisting operation of this switch is performed by twisting the selection ring 3. In FIG. 1, when the selection ring 3 is twisted clockwise, the inner cam 12 integrally connected to the selection ring 3 simultaneously rotates. Between each protrusion 12a, 12a of the inner cam 12 and the protrusion 12
Between b and 12b are respective protrusions 9 of the receiving plate 9.
Since a and 9b are inserted, the receiving plate 9 rotates,
As a result, the outer cam 10 rotates via the second push rod 8, and the opening/closing of the switch 11 is controlled by the outer cam 10. The steel ball 3a inserted between the wall of the selection ring 3 and the case 5 provides a notch sensation.
By twisting the selection ring 3, the steel ball 3a fits into a not-shown recess provided in the case 5, thereby providing a notch sensation.

[Problem to be solved by the invention] In this conventional device, the functions of a push button switch and a twist switch can be obtained with one switch, but the first push rod 2 used to operate the push button switch and the pressing force are , the guide plate 7 for transmitting rotational force, the receiving plate 9 for transmitting and controlling the force applied to the guide plate 7 to the switch 11, the second push rod 8, and the outer cam 10 are arranged in series, respectively. However, the disadvantage is that the size of the operating section becomes large. Also, this type of switch has an inner cam 12 and an outer cam 10.
Various types of opening/closing control of the switch can be performed by replacing the inner cam 12 and outer cam 10.
It has the disadvantage that it cannot be easily changed because it is caulked or screwed. Furthermore, the opening/closing control when operating the twist switch is controlled by the outer cam 1.
In order to open and close the contacts of the switch 11 by rotating the switch 11, the slider protruding from the case that drives the contacts of the switch 11 comes into contact with the outer cam 10, and the rotation of the outer cam 10 opens and closes the slider. It must be pushed into the case of the device to open and close the contacts. For this reason, it is necessary to use a switch 11 with a slider protruding from the switch case, and use a switch used for normal push operation in which the slider that drives the contact does not protrude from the case. The disadvantage is that it cannot be done.

Therefore, the purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional device, to reduce the size of the operation part for push button switch operation and twist switch operation, and to easily change the opening/closing control of the switch. It is an object of the present invention to provide a push button switch with a selection ring which can unify the direction of transmission to the switch by push button switch operation and twist switch operation.

[Means to solve the problem]

According to the present invention, the above-mentioned object is a push button switch with a selection ring that can open and close contacts by pressing a button and by rotating a selection ring arranged around the outer periphery of the button, in which the button is fitted on the upper end. A cylinder that is slidable in the axial direction and has a sloped part inclined in one direction on the outer circumferential surface of the substantially middle part thereof, and a cam groove having a straight part and a vertical part communicating with the sloped part at one end side of the sloped part. The push rod is loosely fitted on the outside of the approximate middle part of the push rod, the upper end is connected to a selection ring disposed around the outer periphery of the button, and is rotatably supported by the case, and the push rod has a shape on its inner peripheral surface. A rotary cylinder provided with a protrusion that is fitted into a cam groove and moves within the cam groove, and a rotating cylinder that is loosely fitted to the outer periphery of the lower end of the push rod and presses the push piece to follow the movement of the push rod in the axial direction. an inner cam having a protrusion along the axial direction on its surface; and a groove arranged on the outside of the inner cam, which is rotatable by being fitted to the lower end of the rotary cylinder, and into which the protrusion of the inner cam is inserted into the inner peripheral surface. The present invention is characterized by comprising an outer cam having an outer cam and a push piece that is housed in a base attached to a cylindrical case and slides in the axial direction to open and close the switch.

[Effect]

In the push button switch with a selection ring according to the present invention, when the button is pressed when the protrusion of the rotary cylinder fitted into the cam groove of the push rod faces the vertical part of the cam groove, the protrusion of the rotary cylinder moves into the vertical part of the cam groove. The push rod is pushed down by passing through the inner cam, and the push piece is pushed through the inner cam to open and close the switch.When the selection ring is twisted, the rotary cylinder integrally connected to the selection ring rotates, and the selection ring is rotated. The push rod is pushed down in the axial direction by the protrusion of the rotary cylinder passing through the slope of the cam groove, and the switch is controlled to open and close by pushing the push piece through the inner cam.

〔Example〕

Figures 3 to 5 show an embodiment of the present invention, in which Figure 3 is a vertical sectional view of a push button switch with a selection ring, Figure 4 is an exploded perspective view of the main parts, and Figure 5 is an exploded view of the main parts. It is.

In FIG. 3, 1 again shows the button, 5 is a case, 11 is a switch, N is a panel mounting nut, and P is a gasket. Reference numeral 13 denotes a cylindrical push rod, into which the button 1 is fitted at the upper end, having a cam groove 13a and an engaging groove 13b on the outer peripheral surface, and projections 13c, 13d at the lower end. A rotary cylinder 15 is attached to the outer peripheral surface of the push rod 13 at a distance from the push rod 13, and a selection ring 1 is attached to the upper outer peripheral side of the rotary cylinder 15.
4 is installed. The rotary tube 15 is formed with a recess 15a that engages with a plurality of protrusions 14a provided on the inner circumferential surface of the selection ring 14.
By engaging with a, the rotary cylinder 15 and the selection ring 14 are integrally coupled. A plurality of leg pieces 15d having a stepped portion 15b and a claw 15c are formed on the lower end side of the rotary cylinder 15, and the stepped portion 15b and the leg piece 15
By pinching the protrusion 5a of the case 5 with the claws 15c of d, the rotary cylinder 15 is prevented from coming off, and the rotary cylinder 15 is rotatably supported with respect to the case 5. A protrusion 15 is provided on the inner peripheral surface of the rotary cylinder 15.
e is formed, and this protrusion 15e fits into the cam groove 13a of the push rod 13. The inner cam 18 has a convex portion 18c that loosely fits into the engagement recess 13b of the push rod 13 inside the leg piece 15d of the rotary cylinder 15.
8a and a plurality of protrusions 18b standing up from the cylindrical portion 18a, a protrusion 18c is formed inside the upper end of the protrusion 18b, and an axial protrusion 18d is formed on the outer peripheral surface of the protrusion 18b. ing. An outer cam 17 is attached to the outer circumferential surface of the inner cam 18, and a groove 17b that engages with the protrusion 18d of the inner cam 18 is formed on the inner circumferential surface of the outer cam 17. A notch 17a into which the leg piece 15d fits is formed, and a collar 17c and a notch cam 17d are also formed. The base 6 attached to the case 5 houses a receiving plate 20 on which the push pieces 19, 19 operated by the inner cam 18 and the notch cam 17d of the outer cam 17 come into contact, and the receiving plate 20 is supported by the base protrusions 6a, 6a. At the same time, it is pressed toward the notch cam 17d by the return spring _S3 .

As shown in the developed view of FIG. 5, the cam groove 13a of the push rod 13 has a slope portion 13a ₁ ,
A straight portion 13a ₂ is formed, and a vertical portion 13a ₃ is formed at the connection point between the slope portion 13a ₁ and the straight portion 13a ₂ . _13a4 is a shielding member that closes the cam groove 13a.

Next, the operation of one embodiment of the present invention will be described.

First, when operating the push button, the cam groove 13 of the push rod 13
The positional relationship between a and the protrusion 15e of the rotary cylinder 15 is the fifth
Assuming that the projection 15e is located at the vertical portion 13a ₃ as shown in the figure, when the button 1 is pressed, the push rod 13 is moved so that the projection 15e of the rotary cylinder 15 faces the vertical portion 13a ₃ of the cam groove 13a. Since the downward sliding movement is not obstructed by the protrusion 15e, it moves downward. As the push rod 13 moves downward, the inner cam 18 whose protrusion 18c is engaged with the engagement groove 13b of the push rod 13 is pushed down, and the push piece 19 is thereby pushed down.
is pressed down to open and close the switch 11.
When the button 1 is released, the push rod 13 switches to the switch 1.
1 is pushed up via the pusher piece 19 and the inner cam 18 by the force of a return spring (not shown) provided in the inner cam 18 .

Next, when the selection ring 14 is rotated when the twist switch is operated, and the rotary cylinder 15 integrally connected to the selection ring 14 is rotated to the left in FIG. It moves along the slope portion 13a ₁ of the cam groove 13a. At this time, since the rotary cylinder 15 is held by the case 5, the push rod 13 is pushed down by the protrusion 15e, and the outer cam 17 rotates together with the rotary cylinder 15, but the inner cam 18 is also rotatably attached to the push rod 13. The inner cam 18 can move up and down relative to the outer cam 17. As a result, when the push rod 13 is pushed down, the inner cam 18 is pushed down in conjunction with it, and the switch 11 is opened and closed via the push piece 19. The protrusion 15e of the rotary cylinder 15 is in the cam groove 13.
When the shielding member 13a reaches the position ₄ , the outer cam 17
The notch cam 17d climbs over the protrusion 20a of the receiving plate 20, providing a notch sensation. In this state, the switch 11 is being operated to open and close, so the button 1 is in a pressed state. This opening/closing operation is canceled by rotating the selection ring 14 in a direction opposite to the aforementioned rotational direction. When the selection ring 14 is rotated in the opposite direction, the rotary cylinder 15 rotates and the protrusion 15e moves to the slope portion 13a ₁ of the cam groove 13a. As a result, the push rod 13 is automatically returned to its original position because it is pressed upward by the return spring of the switch 11 as described above. After the protrusion 15e of the rotating barrel 15 returned to the position of the cam groove 13a of the push rod 13 shown in FIG. 5, the selection ring 14 was rotated in the opposite direction to the previous operation, and the rotating barrel 15 was rotated to the right in FIG. In this case, the protrusion 15e is in the cam groove 13.
Since the push rod 13 is moved along the straight line portion _13a2 of a, the push rod 13 is not pushed down and the switch 11 is not operated to open or close. When the protrusion 15e comes to a position facing the shielding member _13a4 of the cam groove 13a, a notch sensation is obtained by the notch cam 17d of the outer cam 17 and the receiving plate 20. In this state, even if the button 1 is pressed, the projection 15e is prevented from moving by the shielding member _13a4 , so the function of the push button switch is locked. In order to restore the function of the push button switch, the selection ring 14 may be rotated in the opposite direction to the above, and the rotary cylinder 15 may be rotated to the left in FIG.

In this embodiment, the engagement between the inner cam 18 and the outer cam 17 is achieved by the protrusion 18d of the inner cam 18 and the groove 17b of the outer cam 17. A protrusion may be provided for engagement.

Next, another embodiment of the present invention will be described using FIG. 6. FIG. 6 shows a perspective view of the push rod 13, in which the same parts as in the previous embodiment are given the same reference numerals. The difference in FIG. 6 from the above embodiment is that the cam groove 3
The cam body having 0a is connected to two block pieces 31, 3.
1, and the claws 31a provided on the block pieces 31, 31 are made to engage with the holes 31b provided on the push rod 13. In this embodiment, if a large number of block pieces constituting the cam body with different shapes of the cam grooves 30a are prepared, the opening/closing control of the switch can be easily changed by replacing the block pieces.

[Effect of idea]

As explained above, according to the present invention, in a push button switch with a selection ring, the contacts can be opened and closed by pressing the button and by rotating the selection ring arranged on the outer periphery of the button.
The button is fitted to the upper end, and a slanted surface slopes in one direction on the outer peripheral surface of the approximately middle portion, and a cam groove having a straight portion and a vertical portion communicating with the slanted surface is formed on one end side of the sloped portion, and the cam groove is formed in the axial direction. a cylindrical push rod that is slidable on the button; a cylindrical push rod that is loosely fitted on the outside of the approximately middle portion of the push rod; a rotary cylinder provided with a protrusion on its circumferential surface that is fitted into a cam groove of the push rod and moves within the cam groove; an inner cam that presses the pusher piece and has a protrusion extending in the axial direction on the outer circumferential surface; The operating mechanism of a push button switch with a selection ring is controlled by an outer cam having a groove into which a protrusion is inserted, and a push piece that is housed in a base attached to a cylindrical case and slides in the axial direction to open and close the switch. It has a function to control the switch by rotating the selection ring provided on the outer periphery of the push rod, and the control of the switch by rotation of the selection ring is unified in the same axial direction as the operating direction of the push button switch. This makes it possible to use only one type of switch whose contacts are opened and closed by a push operation, and has the advantage that the size of the operating section can be reduced. Also,
It has the advantage that the push rod (cam groove) that controls the opening and closing of the switch can be replaced extremely easily since the operation part can be attached and removed with one touch.

[Brief explanation of the drawing]

1 and 2 respectively show conventional devices, FIG. 1 is a longitudinal sectional view thereof, FIG. 2 is a cross-sectional view taken from FIG. 1, and FIGS. 3 to 5 show an embodiment of the present invention. 3 is a longitudinal sectional view thereof, FIG. 4 is an exploded perspective view of the main part, FIG. 5 is an exploded view of the main part, and FIG. 6 is a perspective view of a push rod in a different embodiment of the present invention. 1... Button, 13... Push rod, 14... Selection ring, 15... Rotating tube, 17... Outer cam, 18...
...Inner cam, 13a...cam groove, 15e...protrusion.

Claims (1)

[Scope of utility model registration request] In a push button switch with a selection ring, in which the contacts can be opened and closed by pressing the button and by rotating the selection ring arranged around the outer circumference of the button, the button is fitted at the upper end and is aligned with the outer peripheral surface of the approximately middle part. a cylindrical push rod that is slidable in the axial direction and is formed with a cam groove having a straight portion and a vertical portion that communicate with the slope portion at one end side of the slope portion; The cam is loosely fitted on the outside of the middle part, the upper end is coupled to a selection ring arranged on the outer periphery of the button, and is rotatably supported by the case, and the cam is fitted into the cam groove of the push rod on the inner peripheral surface of the case. A rotary cylinder provided with a protrusion that moves in the groove, and a protrusion that is loosely fitted on the outer periphery of the lower end of the push rod and presses the push piece following the axial movement of the push rod to form a protrusion along the axial direction on the outer circumferential surface. an inner cam, an outer cam and a cylindrical case, the outer cam having a groove that is arranged outside the inner cam and is rotatable by being fitted into the lower end of the rotary cylinder, and into which the protrusion of the inner cam is inserted into the inner peripheral surface; and a cylindrical case. The operation mechanism of a push button switch with a selection ring consists of a push piece that is housed in a base that is attached to the switch and slides in the axial direction to open and close the switch.