JP6682877B2 - selector switch - Google Patents

Description

  The present invention relates to a selector switch that supplies power to power distribution equipment or electric machines, or controls ON / OFF of electric signals.

As a selector switch for performing ON-OFF control of electric signals for electric machines, for example, the devices of Patent Documents 1 and 2 are known.
Patent Document 1 is a device in which an operating portion assembly, a notch mechanism, and a switch assembly are connected in series. When the operating knob of the operating portion assembly is rotated from the OFF position to the ON position, the notch cam rotated together with the operating knob is notched. This is a device that comes into contact with the notch piece of the mechanism, and the notch piece pushes down the push rod of the switch assembly to turn on the switch. The notch mechanism of the device of Patent Document 1 has a coiled return spring that rotates the notch cam by spring force to the OFF position via the notch piece so that the operating knob and the notch cam automatically return to the initial OFF position. It is arranged.

Further, in Patent Document 2, a switch unit is attached to an opening at one end of a cylindrical body case, and an operation knob is arranged so as to project from the opening at the other end of the body case. When the operation knob is rotated from the OFF position to the ON position, the operation cam in the main body case rotates together with the operation knob, the operation ring engaging with the operation cam moves in the axial direction of the main body case, and the operation ring moves. The actuator of the switch unit is moved to turn on the switch unit.
In the main body case of Patent Document 2, a coiled return spring is arranged between the spring base provided on the switch unit side and the operation ring, and the operation knob and the operation cam are automatically moved to the initial OFF position. In order to return, the operation knob and the operation cam are rotated by the spring force of the return spring.

Japanese Utility Model Publication No. 62-100647 Japanese Utility Model Publication No. 64-55526

By the way, the selector switch described in Patent Document 1 is a device having a long overall length in which an operating knob, a notch cam, a notch piece and a return spring are arranged in the longitudinal direction. In the selector switch described in Patent Document 2, the operation knob is arranged at the lower end opening of the elongated body case, and the operation cam, the operation ring and the return spring are arranged in the body case, and the selector switch has a long overall length. Is.
As described above, since the selector switches of Patent Documents 1 and 2 have a long overall length, there is a problem in miniaturization.
An object of the present invention is to provide a selector switch that can be downsized.

In order to achieve the above object, a selector switch according to one embodiment of the present invention includes an operating portion and a contact portion whose contact is switched by an operation of the operating portion, the operating portion being fixed to a case and having a peripheral surface of an upper surface. A fixed cam having a first cam surface inclined in a direction, a rotary knob rotatably arranged on the case, and a rotary knob arranged in the case below the fixed cam and fixed to the rotary knob. A rotating cam having a second cam surface that is inclined in the circumferential direction and a rotatable cam inside the case above the fixed cam and movably in the axial direction of the case, and contact the first cam surface of the fixed cam. A notch ring having a first cam surface sliding portion formed therein, a spring accommodating recess formed along the axial direction inside the rotary knob, having an upper end closed and a lower end opened, and a spring accommodating recess. Housed, housed in spring housing recess When the notch ring whose one end is held by the notch ring and the first cam surface sliding part slides on the first cam surface of the fixed cam moves in the direction away from the fixed cam, the spring restoring force is applied to the notch ring. And a return spring that acts on. Further, the contact portion is adapted to be switched by the second cam surface of the rotary cam.

  According to the selector switch of the present invention, the fixed cam and the notch ring are arranged adjacent to each other in the axial direction in the case, and the return spring that applies the spring restoring force to the notch ring makes the rotation part constituting the operation portion. Since it is housed inside the knob, the device has a short axial length, and a small selector switch can be provided.

It is a figure which shows the operation procedure of the selector switch of 1st Embodiment which concerns on this invention. It is a figure which shows the structural member of the selector switch of 1st Embodiment which concerns on this invention. It is a figure which shows the internal structure of the selector switch when the operation knob of the selector switch of 1st Embodiment which concerns on this invention is in an OFF position. It is a figure which shows the internal structure of the selector switch when the operation knob of the selector switch of 1st Embodiment which concerns on this invention is in an ON position. It is a figure which shows the connection structure of the operation knob and rotary cam which comprise the selector switch of 1st Embodiment which concerns on this invention. It is sectional drawing which shows the selector switch of 2nd Embodiment which concerns on this invention.

Next, first and second embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the plane dimension, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, the specific thickness and dimensions should be determined in consideration of the following description. Further, it is needless to say that the drawings include portions in which dimensional relationships and ratios are different from each other.
Further, the following first and second embodiments exemplify devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention is that the material of component parts, The shape, structure, arrangement, etc. are not specified below. Various changes can be added to the technical idea of the present invention within the technical scope defined by the claims described in the claims.

[Structure of Selector Switch of First Embodiment]
1 (a) and 1 (b) show a selector switch 1 according to a first embodiment of the present invention. The selector switch 1 is composed of an operating section 3 having an operating knob 2 and a contact section 4. Has been done. 1A shows a state in which the operation knob 2 is in the OFF position and the contact portion 4 is in the OFF operation, and FIG. 1B shows that the operation knob 2 is rotated from the OFF position to the ON position to open the contact portion 4. It is a figure which shows the state which is in an ON state.
As shown in FIG. 2, the operating portion 3 of the selector switch 1 includes an operating knob 2, an operating portion case 5, a notch ring 6, a fixed cam 7, a rotating cam 8, a connecting bolt 9, return springs 10a and 10b, and a V packing 11. , A flat packing 12 and a nut 13.

As shown in FIG. 2, the operation knob 2 includes a rotary knob 2a and a cylindrical base portion 2b formed continuously with the lower end of the rotary knob 2a.
As shown in FIG. 2, the operation portion case 5 is a cylindrical member having a flange portion 5a formed on the peripheral edge on the one end opening side. A guide groove 5b that continuously guides the rotation of the operating knob 2 in the circumferential direction and a packing storage groove 5c that continuously extends in the circumferential direction are formed inside the guide groove 5b on the end surface of the collar portion 5a.
As shown in FIG. 3, the operating knob 2 has a rib 2g formed on the outer periphery of the rotary knob 2a in the guide groove 5b of the collar portion 5a, and the V packing 11 arranged in the packing accommodating groove 5c. 5, one end of the opening is closed.

As shown in FIG. 3, a partition wall 5e having a through hole 5d at the axial center P of the operation unit case 5 is formed inside the operation unit case 5, and the flange 5a side is closer to this partition wall 5e. A first accommodating portion 5f having a cylindrical space is formed on one end side, a second accommodating portion 5g having a cylindrical space is formed on the other end side with respect to the partition wall 5e, and a convex portion 5h is formed on the peripheral edge of the other end opening. There is.
As shown in FIG. 3, the first storage portion 5f stores the notch ring 6, the fixed cam 7, and the base portion 2b of the operation knob 2.
The fixed cam 7 is an annular member having an outer diameter that is the same as the inner diameter of the first storage portion 5f, and as shown in FIG. 2, there are two first cam portions 7a, 7a on one surface in the thickness direction. The upper surfaces of the first cam portions 7a, 7a are formed as a pair of first cam surfaces 7b that are inclined in the same direction as they face the same circumferential direction. A notch 7d is formed in a part of the flat surface 7c which is continuous at the uppermost position of the first cam surface 7b.

A concave portion 7e is formed on the other surface of the fixed cam 7 in the thickness direction, and the concave portion 7e fits into the convex portion 5h (see FIG. 2) formed on the partition wall 5e of the operation portion case 5. As a result, the fixed cam 7 is stored in the first storage portion 5f in a state in which its rotation is restricted.
As shown in FIG. 3, the base portion 2b of the operation knob 2 is stored in a state of abutting against one surface in the thickness direction of the fixed cam 7 in the first storage portion 5f. Two axial slits 2c, 2c are formed in the direction along the axis P (only one slit 2c is shown in FIG. 3).

The notch ring 6 is also an annular member, as shown in FIG. 2, and has engagement protrusions 6a, 6a protruding outward in the radial direction from two locations on the outer peripheral surface.
The notch ring 6 is formed by fitting the engaging projections 6a, 6a into the two axial slits 2c, 2c formed in the base portion 2 of the operation knob 2 described above, so that the first cam of the fixed cam 7 at the two locations. It is housed in the first housing part 5f in a state of being in contact with one surface of the fixed cam 7 in the thickness direction while surrounding the parts 7a, 7a from the outside.
As a result, the notch ring 6 can move in the direction away from the fixed cam 7 along the axial center P (the vertical direction in FIG. 3) while the engaging protrusions 6a, 6a engage the axial slits 2c, 2c. Has been done.

The notch ring 6 is provided with two spring holding portions 6b, 6b protruding upward near the engaging projections 6a, 6a (see FIGS. 2 and 3), and these two spring holding portions are also provided. Two positions of the first cam surface sliding portions 6c, 6c that slide on the first cam surfaces 7b, 7b and the flat surfaces 7c, 7c are formed below the positions 6b, 6b (FIGS. 2 and 3). Describes only one of the pair of first cam surface sliding portions 6c, 6c).
As shown in FIG. 5, in the rotary knob 2a of the operation knob 2, two spring accommodating holes 2d and 2e are formed in parallel with each other in the direction along the axis P along the axis P. One end of each of the spring housing holes 2d and 2e is closed, and the other end is opened inside the base portion 2b at a position facing the spring holding portions 6b and 6b of the notch ring 6.

Then, the return springs 10a and 10b are housed in the spring housing holes 2d and 2e, respectively, and one end side of the return springs 10a and 10b protruding from the base portion 2b is engaged with the spring holding portions 6b and 6b. Return springs 10a and 10b are arranged inside the.
As shown in FIG. 2, the rotating cam 8 is formed on a disk portion 8a, a reduced diameter cylindrical portion 8b protruding from the axial center position of one surface of the disk portion 8a in the thickness direction, and a reduced diameter cylindrical portion 8b. And a bolt passing hole 8c.
As shown in FIG. 5, a screw hole 2h is formed at the axial center P position on the lower surface (the portion surrounded by the base portion 2) of the rotary knob 2a of the operation knob 2.

By inserting the reduced diameter cylindrical portion 8b of the rotary cam 8 into the through hole 5d of the partition wall 5e of the operation portion case 5, passing the connecting bolt 9 through the bolt passage hole 8c, and screwing it into the screw hole 2h of the rotary knob 2a, The rotary cam 8 is fixed to the operation knob 2. The rotary cam 8 rotates with the rotation of the rotary knob 2a. At that time, the rib 2g of the operation knob 2 slides in the guide groove 5b, and the V packing 11 is crushed, so that the operation knob is pressed. Waterproof from 2 to the inside is secured.
Here, as shown in FIGS. 3 and 4, the disk portion 8a of the rotary cam 8 is formed with two second cam portions 8d, 8d in a direction facing the contact portion 4. The lower surfaces of the second cam portions 8d, 8d are formed as two second cam surfaces 8e, 8e that are inclined in the same direction along the same circumferential direction.

As shown in FIG. 2, the contact portion 4 includes a contact portion case 4a accommodating a switch mechanism (not shown), a ring-shaped fitting convex portion 4b formed on an upper portion of the contact portion case 4a, It is provided with a pair of push rods 4c, 4c which are engaged with the switch mechanism and project from the upper end of the contact portion case 4a. The switch mechanism is OFF when the push rods 4c and 4c are projected from the contact case 4a, and the switch mechanism is ON when the push rods 4c and 4c are pushed into the contact case 4a. There is.
Then, as shown in FIGS. 3 and 4, the contact portion 4 is connected to the operating portion 3 by detachably fitting the fitting convex portion 4b into the convex portion 5h of the operating portion case 5.
Further, as shown in FIG. 3, the flat packing 12 is arranged on the outer periphery of the operation portion case 5, and the nut 13 is screwed into the male screw portion 5i formed on the outer periphery of the operation portion case 5, so that the back surface of the collar portion 5a is secured. The nut 13 is arranged via the flat packing 12.

[Operation of Selector Switch of First Embodiment]
Next, referring to FIG. 3 and FIG. 4, the operation of the selector switch 1 when rotating the rotary knob 2a of the operation knob 2 from the OFF position of FIG. 1A to the ON position of FIG. explain.
When the rotary knob 2a of the operation knob 2 rotates from the OFF position to the ON position, the notch ring 6 engaged with the base 2b and the rotary cam 8 fixed to the lower surface of the rotary knob 2a also rotate in the same direction.

At this time, in the notch ring 6, the two first cam surface sliding portions 6c and 6c are arranged so that the first cam surfaces 7b and 7b of the fixed cam 7 move in the ascending direction (the first cam surface sliding portion 6c in FIG. It moves to the left and slides and rotates in the direction of climbing on the first cam surface 7b (this rotation is referred to as forward rotation).
As the first cam surface sliding portion 6c slides in the ascending direction of the first cam surface 7b, the notch ring 6 moves in the direction away from the fixed cam 7, and the spring holding portion 6b of the notch ring 6 is moved. The return springs 10a and 10b, one end of which is held in the spring storage holes 2d and 2e, gradually become shorter in spring length and are compressed. Then, as shown in FIG. 4, when the tip of the first cam surface sliding portion 6c enters the notch 7d of the flat surface 7c, the rotation of the notch ring 6 is stopped and the rotary knob 2a is in the ON position. Held in.

  Further, when the rotary knob 2a is rotated from the OFF position to the ON position at the same time, the rotary cam 8 is rotated at the same time. , 4c in the ascending direction (the direction in which the angle formed by the second cam surface 8e with respect to the plane orthogonal to the axis P gradually increases). The push rods 4c, 4c of the contact portion 4 sliding in the ascending direction of the second cam surfaces 8e, 8e of the two second cam portions 8d, 8d are gradually pushed by the second cam surfaces 8e, 8e and are then contact portions. The switch mechanism inside the contact portion case 4a is turned on as it enters the inside of the case 4a.

Next, the operation of the selector switch 1 when returning the rotary knob 2a of the operation knob 2 from the ON position of FIG. 1B to the OFF position side of FIG. 1A will be described.
When the rotary knob 2a is slightly turned toward the OFF position, the first cam surface sliding portion 6c whose tip has entered the notch 7d moves onto the first cam surface 7b.
The return springs 10a and 10b are housed in the spring housing holes 2d and 2e in a compressed state, and the spring restoring force of the return springs 10a and 10b is the first cam surface sliding portion 6c. It acts on the notch ring 6 that is in contact with 7b, and the first cam surface sliding portion 6c slides in the downward direction of the first cam surface 7b. As a result, the notch ring 6 rotates in the opposite direction and moves in the direction of approaching the fixed cam 7, and the rotary knob 2a rotates to the OFF position in FIG. 1A.
When the rotary knob 2a is rotated from the ON position to the OFF position, the second cam surfaces 8e, 8e of the rotating cam 8 rotating in the opposite direction are gradually separated from the push rods 4c, 4c of the contact portion 4. . As a result, the push rods 4c, 4c of the contact portion 4 that have entered the inside of the contact portion case 4a return to the state of protruding from the contact portion case 4a, and the switch mechanism of the contact portion 4 is turned off.

[Effects of Selector Switch of First Embodiment]
Next, the effect of the selector switch 1 of the first embodiment will be described.
In the selector switch 1 of the first embodiment, the fixed cam 7 and the notch ring 6 are arranged adjacent to each other in the axial center P direction, and the return springs 10a and 10b that exert a spring restoring force on the notch ring 6 rotate. Since it is accommodated in the spring accommodating holes 2d and 2e formed in the knob 2a along the axial center P direction, the selector switch 1 has a short length in the axial center P direction, and the size can be reduced.
Further, the notch ring 6 is housed in the first housing part 5f while being in contact with the surface of the fixed cam 7 in the thickness direction while surrounding the first cam parts 7a, 7a of the fixed cam 7 from the outside. Since the notch ring 6 and the fixed cam 7 are arranged in the operation portion case 5 so as to overlap with each other in the axial center P direction, the notch ring 6 and the fixed cam 7 are movable along the axial center P in a direction away from the fixed cam 7. The length in the direction of the axis P is shortened, and miniaturization can be promoted.

[Structure of Selector Switch of Second Embodiment]
Next, FIG. 6 shows a selector switch 15 according to a second embodiment of the present invention.
The selector switch 15 according to the second embodiment includes an operation unit 16 and a contact unit 17.
The operating portion 16 has substantially the same structure as the selector switch 1 of the first embodiment, and has an operating knob 2, an operating portion case 5, a notch ring 6, a fixed cam 7, a rotating cam 8, a connecting bolt (not shown), and a return spring 10a. , 10b, and V packing 11.

The contact portion 17 includes a contact portion case 18 detachably attached to the operation portion case 5, a switch substrate 19 having a switch function housed in the contact portion case 18, and a disc spring shape provided on the switch substrate 19. The switch unit 20 and the switch operation unit 21 arranged inside the operation unit case 5 are provided.
The switch operating portion 21 has a push plate 22 facing the switch portion 20 of the switch board 19, and the second cam surface 8e of the second cam portions 8d of the rotary cam 8 at the two positions on the upper surface of the push plate 22. , 8e are formed on the rotary cam side contacts 22a, 22b, and switch side contacts 22c are formed on the rotary cam side.

[Operation of Selector Switch of Second Embodiment]
Next, the operation of the contact portion 17 of the selector switch 15 of the second embodiment when rotating the rotary knob 2a of the operation knob 2 from the OFF position of FIG. 1A to the ON position of FIG. 1B will be described. To do.
The rotary cam 8 that rotates simultaneously when the rotary knob 2a rotates from the OFF position to the ON position is a switch operation in which the second cam surfaces 8e and 8e of the two second cam portions 8d and 8d form the contact portion 17. The rotary cam side contacts 22a and 22b of the portion 21 are contacted.

The pressing plate 22 moves downward when the second cam surfaces 8e, 8e contact the rotating cam side contacts 22a, 22b, the switch side contact 22c contacts the switch section 20, and the switch substrate 19 is turned on. .
Further, when the rotary knob 2a of the operation knob 2 is returned from the ON position in FIG. 1 (b) to the OFF position side in FIG. 1 (a), the second cam surfaces 8e, 8e of the rotary cam 8 rotating in the opposite direction rotate. The push plate 22 moves upward by being separated from the cam side contacts 22a and 22b, the switch side contact 22c is separated from the switch section 20, and the switch substrate 19 is turned off.

[Effect of Selector Switch of Second Embodiment]
Next, the effect of the selector switch 15 of the second embodiment will be described.
Also in the selector switch 15 of the second embodiment, the fixed cam 7 and the notch ring 6 are arranged adjacent to each other in the axial center P direction, and the return springs 10a and 10b that apply a spring restoring force to the notch ring 6 rotate. Since it is housed in the spring housing holes 2d and 2e formed in the knob 2a along the axial center P direction, the selector switch 15 has a short length in the axial center P direction, and the size can be reduced.

  Further, the contact portion 17 is arranged inside the operation portion case 5, the switch substrate 19 having a switch function housed in the contact portion case 18, the disc spring-shaped switch portion 20 provided on the switch substrate 19. The switch operating portion 21 is provided on the upper surface of the push plate 22 facing the switch portion 20 of the switch board 19 and the second cam portions 8d of the rotary cam 8 are provided at the second positions. Since the rotary cam side contacts 22a and 22b protruding toward the cam surfaces 8e and 8e are formed, and the switch side contact 22c protruding toward the switch portion 20 is formed on the lower surface of the push plate 22, the structure is further improved. The size and weight of the selector switch 15 can be reduced.

1 Selector Switch 2 Operation Knob 2a Rotation Knob 2b Base 2c Axial Slits 2d, 2e Spring Storage Hole 2g Rib 2h Screw Hole 3 Operation Part 4 Contact Part 4a Contact Part Case 4b Fitting Convex 4c Push Bar 5 Operation Part Case 5a Collar Part 5b Guide groove 5c Packing storage groove 5d Through hole 5e Partition wall 5f First storage portion 5g Second storage portion 5h Convex portion 5i Male screw portion 6 Notch ring 6a Engagement protrusion 6b, 6b Spring holding portion 6c, 6c First cam surface Sliding part 7 Fixed cams 7a, 7a First cam parts 7b, 7b First cam surfaces 7c, 7c Flat surfaces 7d, 7d Notches 7e Recesses 8 Rotating cams 8a Disk parts 8b Reduced diameter cylindrical parts 8c Bolt passage holes 8d Second cams Part 8e Second cam surface 9 Connecting bolts 10a, 10b Return spring 11 V packing 12 Flat packing 13 Nut 15 Selector switch 16 Operating part 17 Contact part 1 Contact portion case 19 switch substrate 20 switching section 21 switches the operation unit 22 push plate 22a, 22b rotates the cam side contact 22c switch side contact P axis

Claims (3)

An operating unit and a contact unit whose contact is switched by the operation of the operating unit,
The operation unit is
A fixed cam fixed to the case and having a first cam surface inclined in the circumferential direction on the upper surface;
A rotary knob rotatably arranged in the case,
A rotary cam disposed in the case below the fixed cam, fixed to the rotary knob, and having a second cam surface inclined in the circumferential direction on the lower surface;
A first cam surface sliding portion that is rotatably disposed in the case above the fixed cam and is movable in the axial direction of the case and that contacts the first cam surface of the fixed cam is formed. Notch ring,
A spring accommodating recess formed along the axial direction inside the rotary knob , the upper end of which is closed and the lower end of which is open ;
The notch ring housed in the spring housing recess, the spring end housed in the spring housing recess is held by the notch ring, and the first cam surface sliding portion slides on the first cam surface of the fixed cam. And a return spring that applies a spring restoring force to the notch ring when it moves in a direction away from the fixed cam, and
In the selector switch, the contact portion is switched by the second cam surface of the rotary cam.   The rotary knob rotates from a first position to a second position rotated by 90 ° with respect to the first position, the rotary knob rotates from the first position to the second position, and rotates together with the rotary knob. 2. The selector switch according to claim 1, wherein the return spring acts on the notch ring by the spring restoring force by moving the notch ring in the axial direction in a direction away from the fixed cam.   The surface of the fixed cam that is continuous with the first cam surface is provided with a notch with which the first cam surface sliding portion of the notch ring engages when the rotary knob rotates to the second position. The selector switch according to claim 2, wherein the selector switch is provided.

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