JP5017180B2 - Push switch device - Google Patents

Description

  The present invention relates to a push switch device that links a rotation of a rotating body in a housing with a pressing operation of an operating body and generates a signal in accordance with a change in the rotation angle of the rotating body.

A conventional push switch device is disclosed in Patent Document 1. This conventional push switch device includes a housing, a rotating body provided rotatably in the housing, a detection means for generating a signal in accordance with a change in the rotation angle of the rotating body, and rotation of the rotating body with respect to the housing. And an operating body that is capable of linear motion in the axial direction and cannot be rotated around the rotational axis. A ratchet mechanism is provided between the rotating body and the operating body. The ratchet mechanism includes a cam follower that is interposed between the rotating body and the operating body and is linearly movable in the rotation axis direction in a state of being coupled to the rotating body so as to be rotatable. This cam follower rotates by a predetermined angle in one direction in conjunction with the pressing operation of the operating body. The rotating body rotates together with the cam follower by a predetermined angle in one direction, and accordingly, the detecting means generates a signal.
JP 2004-253368 A

  For the push switch device, there is a demand for facilitating illumination in which the pressed side of the operating body appears to emit light. In the conventional push switch device described above, the shapes and arrangements of the rotating shaft, the rotating body, the cam follower, and the operating body of the rotating body provided in the housing are not considered to realize the demand.

  The present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to provide a push switch device capable of facilitating illumination in which a pressed side of an operating body appears to emit light.

  In order to achieve the above object, the present invention is as follows.

[1] The present invention relates to a housing, a rotating body rotatably provided in the housing, detection means for generating a signal in accordance with a change in the rotation angle of the rotating body, and the rotating body with respect to the housing. An operating body that can linearly move in the direction of the rotation axis and cannot rotate around the rotation axis, and is interposed between the rotating body and the operating body so as to be integrally rotatable with the rotating body And a ratchet mechanism that includes a cam follower that can linearly move in the direction of the rotation axis, and that rotates the rotating body by a predetermined angle in one direction in conjunction with a pressing operation of the operating body, The housing is provided with a shaft portion extending along the rotation axis direction, the rotating body is provided with a first through hole penetrating in the rotation axis direction, and the cam follower has the A second through hole penetrating in the rotation axis direction is provided, and the operating body is provided with a third through hole penetrating in the rotation axis direction, and these first to third through holes are inserted into the shaft portion. Further, a light guide path is provided in the shaft portion.

  In the present invention described in “[1]”, the light incident on one end of the light guide path on the side opposite to the end on the side to which the operating body is pressed is the other end of the light guide path, that is, the operating body. Radiated from the end of the pressed side. Thereby, the pressed side of the operating body appears to emit light. In other words, according to the present invention described in “[1]”, the light source of the illumination on the side pressed by the operation body is simply disposed at a position where light can be incident on one end of the light guide. Illumination can be performed in which the side to be pressed appears to emit light. Therefore, it is easy to perform illumination in which the pressed side of the operating body appears to emit light.

[2] The present invention is characterized in that in the invention described in “[1]”, the light guide path is formed by a through-hole portion provided in the shaft portion.

  According to the present invention described in “[2]”, an illumination light source can be arranged in the through-hole portion to reduce light leakage to the outside of the light guide path, and therefore it is easy to ensure brightness of illumination.

[3] In the present invention according to “[1]” or “[2]”, the ratchet mechanism includes a return spring that biases the cam follower toward an initial position in the rotation axis direction, A first coronal portion provided on the rotating body side of the operating body and having undulations in the rotation axis direction continuous in an annular shape, and provided on the cam follower and facing the first coronal portion, A meshable second coronal portion, a cam portion provided on the outer peripheral side of the second coronal portion, and an inner surface of the housing that guides the cam portion and interlocks with a pressing operation of the operating body. A guide portion that regulates the operation of the cam follower, and a plurality of the guide portions are intermittently provided around the cam follower and engaged with the cam portion, and between the adjacent rotation prevention portions. Provided A rotation guide portion and a return prevention portion that is provided in the middle of the rotation guide portion and engages with the cam portion. The rotation prevention portion resists the restoring force of the return spring from the initial position of the cam follower. The cam follower is allowed to move and return to the initial position of the cam follower by the return spring, and the cam portion is locked in a predetermined range in the rotation axis direction to prevent the rotation of the cam follower. The rotation guide portion is formed in a shape for converting the restoring force of the return spring transmitted from the cam portion into the one-way force and applying the force to the cam portion, and the return blocking portion is the return spring. The cam follower is allowed to move in a direction against the restoring force of the cam follower, and the cam portion is locked to rotate in the one direction and return to the initial position. It is characterized by being formed in a shape that prevents it further.

  The operation of the present invention described in “[3]” will be described by taking as an example a case where the operating body is operated while holding the posture of the housing so that the operating body is positioned above the cam follower.

  The cam follower is positioned at the initial position when the cam follower is locked by the rotation preventing portion to prevent the cam follower from rotating, and the cam follower is moved downwardly against the restoring force of the return spring. Is allowed to move. The downward movement of the operating body is suppressed by applying the restoring force of the return spring to the operating body via the cam follower. In this state, the first coronal part and the second coronal part are not engaged with each other.

  When the user applies a pressing force larger than the restoring force of the return spring to the operating body, the operating body and the cam follower are integrally returned to the operating body by pressing the second coronal portion of the cam follower by the first coronal portion of the operating body. Move in the direction approaching the rotating body while pressing and shrinking. As a result, the cam follower moves out of the predetermined range in the rotation axis direction, and the cam part is detached from the rotation prevention part in accordance with this, whereby the cam follower is allowed to rotate. Since the second coronal part is pressed against the first coronal part by the restoring force of the return spring, the cam follower rotates in one direction until the second coronal part is engaged with the first coronal part. Accordingly, the cam portion moves to a position overlapping the rotation guide portion in the rotation axis direction.

  When the user stops applying the pressing force to the operating body after the first coronal part is engaged with the first coronal part, the cam follower is pushed back by the restoring force of the return spring, and the cam part is pressed against the rotation guide part. It is done. At this time, the rotation guide part converts the restoring force of the return spring transmitted from the cam part into a one-way force and applies the force to the cam part, whereby the cam part prevents the return while rotating the cam follower in one direction. Move to the department. When the cam part reaches the return prevention part, the rotation of the cam follower stops and does not return to the initial position. Since the operating body moves integrally with the cam follower via the first crown portion, the second crown portion, and the return spring in the rotation axis direction, the cam follower is positioned at the initial position when the cam follower stops returning to the initial position. The operating body stops at a position closer to the rotating body than when the operation is performed, that is, a position lower than before the pressing operation.

  As described above, according to the present invention described in “[3]”, the stop position of the operating body in the rotation axis direction is set such that when the cam follower is located at the initial position, and the return to the initial position of the cam follower is It can be different when it is blocked.

  Further, since the rotating body rotates integrally with the cam follower, the rotation angle of the rotating body when the cam portion is locked to the rotation preventing portion and the rotating body when the cam portion is locked to the return preventing portion are If the state of the detection means is set to be different depending on the rotation angle, the difference in the state of the detection means can be determined by the difference in the stop position in the rotation axis direction of the operating body.

[4] In the present invention according to “[3]”, the cam portion includes a protruding portion that protrudes to the outer peripheral side from the second crown-shaped portion, and the rotation prevention portion extends in the rotation axis direction. It extends to the rotating body side and includes a groove into which the cam portion can be inserted, and the rotation guide portion extends from an opening end of one of the adjacent rotation prevention portions, and is around the rotation axis. A first inclined surface inclined in a direction away from the rotating body in a circumferential direction of the first inclined surface, and a second inclined surface extending from the first inclined surface side to the opening end of the other rotation blocking portion and inclined in the same direction as the first inclined surface; The return preventing portion is formed of a step portion formed between the first slope and the second slope.

  According to the invention described in “[4]”, the cam portion, the rotation prevention portion, the rotation guide portion, and the return prevention portion can be easily provided and can function reliably.

[5] The present invention is the invention described in [4], wherein a recess into which the cam portion can be inserted is provided between the first slope and the step portion, and the recess includes the return prevention portion, A reverse rotation preventing portion for preventing the cam portion from rotating in the direction opposite to the one direction is formed.

  In the present invention described in “[5]”, the reverse rotation preventing portion locks the cam portion and prevents the cam follower from rotating in the direction opposite to the guide direction (one direction) by the rotation guide portion. Accordingly, the rotation of the rotating body in the reverse direction can be prevented, and the detection unit can be prevented from being in a state not corresponding to the stop position in the rotation axis direction of the operating body.

[6] In the present invention according to any one of “[1]” to “[5]”, the operation body includes a first cylindrical portion that forms the third through hole, and the first cylindrical portion. A second tubular portion provided with the first crown-shaped portion on the outer peripheral side of the tubular portion, and a wall on the opposite side of the rotating body side between the first tubular portion and the second tubular portion. Forming a cylindrical space having a portion, the cam follower is inserted into the inner peripheral side of the second cylindrical portion from the rotating body side, and the first cylindrical portion is inserted into the second through hole of the cam follower, A buffer spring having a spring load smaller than that of the return spring is disposed between the operating body and the cam follower in the cylindrical space.

  In the present invention described in “[6]”, the buffer spring performs buffering between the operating body and the cam follower, and for example, when the first coronal portion and the second coronal portion are generated between the operating body and the cam follower. Reduce impact noise. Further, it is possible to prevent the operating body from rattling with respect to the cam follower. As a result, the quality of the push switch device can be improved.

[7] In the present invention according to “[6]”, the return spring and the buffer spring are arranged side by side in the rotation axis direction.

  According to the present invention described in “[7]”, the size of the push switch device in the radial direction of the circle around the rotation axis can be easily shortened.

[8] The present invention provides the cam follower according to the invention described in [3], wherein the cam follower is disengaged from the rotating body in a locked state in which the return spring is prevented from returning to the initial position by the return spring. It has a separation prevention part which stops movement of the operation body in the direction of leaving by stopping a locking part provided in the operation body.

  In the present invention described in “[8]”, the separation preventing portion prevents the operation body from moving in the direction away from the rotating body in the locked state. Thus, as in the invention described in “[3]” above, for example, the operating body is positioned below the cam follower even if the attitude of the housing is not maintained so that the operating body is positioned above the cam follower. Thus, even when the attitude of the housing is maintained, the position of the operating body in the locked state can be maintained at a position closer to the rotating body than when the cam follower is positioned at the initial position. In other words, the stop position of the operating body in the rotation axis direction differs between when the cam follower is positioned at the initial position and when the return of the cam follower to the initial position is blocked by the return blocking portion regardless of the attitude of the housing. Can be made.

[9] In the present invention according to “[6]” or “[7]”, the distal end side of the first cylindrical portion is provided with a protruding portion protruding outward, and the cam follower includes It is characterized in that a separation preventing part is formed for preventing the movement of the operating body in a direction away from the rotating body by engaging the protruding part.

  According to the present invention described in “[9]”, by a simple configuration including a protruding portion provided at an end of the first cylindrical portion on the rotating body side and a separation preventing portion formed in the cam follower, The stop position of the operating body in the direction of the rotation axis should be different between the cam follower at the initial position and the return of the cam follower to the initial position blocked by the return prevention part, regardless of the attitude of the housing. Can do.

[10] In the present invention according to any one of “[1]” to “[9]”, the cam follower can rotate integrally with the rotating body by spline coupling with the rotating body. The spline coupling is formed by cutting out a part of the second crown-shaped portion of the cam follower and extending in the rotation axis direction on the rotating body side. It is characterized by comprising an open slit and an insertion part that protrudes from the rotating body and is inserted into the slit.

  In the present invention described in “[10]”, since a slit is formed by cutting out a part of the second coronal portion of the cam follower, the spline coupling portion between the cam follower and the rotating body is formed more than the second coronal portion. It can be arranged without going out to the outer peripheral side. Thereby, it becomes easy to shorten the dimension of the push switch device in the radial direction of the circle around the rotation axis.

[11] In the present invention according to any one of “[1]” to “[10]”, the detection unit includes a movable contact provided integrally and rotatable on the rotating body, A fixed contact fixed to the housing and contacting and separating from the movable contact is provided.

  According to the present invention, as described above, the illumination light source on the side pressed by the operating body is disposed at a position where light can be incident on one end of the light guide, and the side pressed by the operating body is Therefore, it is possible to provide a push switch device that can perform illumination that appears to emit light, and can easily perform illumination that appears to emit light on the pressed side of the operating body.

  A push switch device according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a push switch device according to an embodiment of the present invention. FIG. 2 is a front view of the push switch device shown in FIG. FIG. 3 is a top view of the push switch device shown in FIG. FIG. 4 is a side view of the push switch device shown in FIG. 1 installed on a substrate.

  As shown in FIGS. 1 to 4, the push switch device 1 according to this embodiment includes a housing 2 having a rectangular shape in a top view. From the upper end surface of the housing 2, an operation body 30 made of a synthetic resin protrudes in an annular shape when viewed from above. From the lower part of the housing 2, the first to fourth external terminals 21A to 21D having good conductivity protrude. These first to fourth external terminals 21 </ b> A to 21 </ b> D are soldered in a state where they are inserted into four holes 90 a and 90 b of a circuit board 90 provided in an electric device or the like, and the push switch device 1 is connected to the circuit board 90. It will be in the state connected to the power supply via.

  FIG. 5 is an exploded perspective view of the push switch device shown in FIG. 6 is an enlarged view of the longitudinal section of the push switch device shown in FIG. 1, wherein (a) is a sectional view taken along line VIa-VIa in FIG. 2, and (b) is a sectional view taken along line VIb-VIb in FIG. FIG. FIG. 7 is an enlarged view showing a single wafer provided in the push switch device shown in FIG. 1, wherein (a) is a top view, (b) is a side view, and (c) is a front view. FIG. 8 is an enlarged view of a single rotating body provided in the push switch device shown in FIG. 1, wherein (a) is a top view, (b) is a side view, and (c) is a bottom view. . FIG. 9 is an enlarged view showing a single housing provided in the push switch device shown in FIG. 1, wherein (a) is a top view, (b) is a bottom view, and (c) is c in (a). FIG. FIGS. 10A and 10B are enlarged views showing a single operation body provided in the push switch device shown in FIG. 1, and FIG. 10A is a top view, FIG. 10B is a side view, and FIG. 10C is a bottom view. FIG. 11 is an enlarged view of the cam follower provided in the push switch device shown in FIG. 1, wherein (a) is a top view and (b) is a side view. 12 includes (a) a guide portion of the housing, (b) a first coronal portion of the operating body, and (c) a second coronal portion of the cam follower included in the ratchet mechanism provided in the push switch device shown in FIG. It is a figure which expand | deploys and shows.

  As shown in FIGS. 5 and 6, the housing 2 is a housing body 3 and a wafer 4 combined. The housing body 3 is a resin molded product, and forms the upper end surface of the housing 2 and most of the front, back, left side, and right side of the housing 2. The wafer 4 is also a resin molded product and forms the lower part of the housing 2.

  As shown in FIG. 7, at the bottom 4a of the wafer 4, the first to fifth fixed contacts 22A to 22E having good conductivity exposed in the housing 2 are clockwise, as shown in FIG. The two fixed contacts 22B, the fourth fixed contact 22D, the third fixed contact 22C, and the fifth fixed contact 22E are arranged circumferentially in this order. The first fixed contact 22A is formed integrally with the first and second external terminals 21A and 21B. The second fixed contact 22B and the third fixed contact 22C are formed integrally with the third external terminal 21C. The fourth fixed contact 22D and the fifth fixed contact 22E are formed integrally with the fourth external terminal 21D. The first to fifth fixed contacts 22A to 22E and the first to fourth external terminals 21A to 21D are provided on the wafer 4 by insert molding.

  As shown in FIGS. 5 and 6, a cylindrical shaft portion 4 b as a shaft portion is formed at the center of the wafer 4 so as to protrude in the direction of the operating body 30 (upward direction). The cylindrical shaft portion 4b is inserted into the first through hole 82 of the rotating body 10 made of synthetic resin. As shown in FIG. 8, the rotating body 10 includes a disc portion 11 that forms a base, and a cylindrical portion 12 that forms the first through hole 82 in the center of the disc portion 11. The dimensional relationship between the cylindrical portion 12 and the first through hole 82 enables rotation around the cylindrical shaft portion 4b of the rotating body 10, and the rotating body 10 forms the first through hole 82 during the rotation. It is set to be guided by the outer peripheral surface of the cylindrical shaft portion 4 b of the wafer 4 at the position of the inner peripheral surface of the cylindrical portion 12.

  As shown in FIGS. 8B and 8C, fitting protrusions 11 a and 11 b protruding downward are formed on the lower surface of the disk portion 11 of the rotating body 10 with the first through hole 82 interposed therebetween. Are arranged side by side in the radial direction. The fitting protrusions 11a and 11b are fitted into fitting holes 23a and 23b of the conductive sliding body 23 shown in FIG. The conductive sliding body 23 is a highly conductive member having an annular shape when viewed from above, and is disposed concentrically with the disk portion 11 of the rotating body 10. The conductive sliding body 23 has a pair of first and second movable contacts 24a and 24b that are arranged to face each other in the radial direction and project downward. The first and second movable contacts 24 a and 24 b are in elastic contact with the bottom 4 a of the wafer 4 as the rotating body 10 rotates. The positional relationship between the first and second movable contacts 24a and 24b and the first to fifth fixed contacts 22A to 22E is such that the first and second movable contacts 24a and 24b are on the first to fifth fixed contacts 22A to 22E. It is set so that the following first to eighth states are sequentially formed by rotating.

  In the first state, the first movable contact 24a is in contact with the first fixed contact 22A, the second movable contact 24b is in contact with the second fixed contact 22B, and the conductive sliding body 23 is placed between the first and second fixed contacts 22A and 22B. It is in a state of conducting through. In the second state, the first movable contact 24a is in contact with the first fixed contact 22A, the second movable contact 24b is in contact with the fourth fixed contact 22D, and the conductive sliding body 23 is interposed between the first and fourth fixed contacts 22A and 22D. It is in a state of conducting through. In the third state, the first movable contact 24a is in contact with the first fixed contact 22A, the second movable contact 24b is in contact with the third fixed contact 22C, and the conductive sliding body 23 is placed between the first and third fixed contacts 22A, 22D. It is in a state of conducting through. In the fourth state, the first movable contact 24a is in contact with the first fixed contact 22A, the second movable contact 24b is in contact with the fifth fixed contact 22E, and the conductive sliding body 23 is interposed between the first and fifth fixed contacts 22A and 22E. It is in a state of conducting through. In the fifth state, the second movable contact 24b is in contact with the first fixed contact 22A, the first movable contact 24a is in contact with the second fixed contact 22B, and the conductive sliding body 23 is interposed between the first and second fixed contacts 22A and 22B. It is in a state of conducting through. In the sixth state, the second movable contact 24b is in contact with the first fixed contact 22A, the first movable contact 24a is in contact with the fourth fixed contact 22D, and the conductive sliding body 23 is placed between the first and fourth fixed contacts 22A, 22D. It is in a state of conducting through. In the seventh state, the second movable contact 24b is in contact with the first fixed contact 22A, the first movable contact 24a is in contact with the third fixed contact 22C, and the conductive sliding body 23 is interposed between the first and third fixed contacts 22A and 22D. It is in a state of conducting through. In the eighth state, the second movable contact 24b is in contact with the first fixed contact 22A, the first movable contact 24a is in contact with the fifth fixed contact 22E, and the conductive sliding body 23 is placed between the first and fifth fixed contacts 22A and 22E. It is in a state of conducting through.

  As can be seen from the fact that these first to eighth states are formed by the first and second movable contacts 24a and 24b and the first to fifth fixed contacts 22A to 22E, the first and second movable contacts 24a and 24b are The first to fifth fixed contacts 22A to 22E are detection units that are fixed to the housing 2 and detect the detection unit. That is, the first and second movable contacts 24 a and 24 b and the first to fifth fixed contacts 22 </ b> A to 22 </ b> E constitute a detection unit 20 that generates an electrical signal with a change in the rotation angle of the rotating body 10.

  As shown in FIG. 6, the housing body 3 is formed with a hole 3 a penetrating in the direction of the rotation axis 100 (vertical direction). The hole 3 a is concentric with the cylindrical shaft portion 4 b of the wafer 4. The operating body 30 is arranged in the direction of the rotation axis 100 of the rotating body 10 by being inserted into the hole 3a, and is guided to the inner peripheral surface of the housing main body 3 in which the hole 3a is formed. On the other hand, linear motion is possible in the direction of the rotation axis 100.

  The operation body 30 and the housing body 3 are formed with a rotation blocking structure that allows the operation body 30 to linearly move in the direction of the rotation axis 100 of the rotating body 10 with respect to the housing 2 and disables rotation around the rotation axis 100. . The rotation prevention structure includes a rotation prevention portion 52 (FIGS. 9B, 9C, 9C) formed of a groove formed on the inner peripheral surface where the cylindrical surface of the hole 3a of the housing body 3 is formed and extending in the direction of the rotation axis 100. 12) and a guide protrusion 34 (shown in FIG. 10) that is formed on the outer peripheral surface of the operating body 30 so as to protrude outward and is inserted into the rotation preventing portion 52. Four combinations of the rotation blocking portion 52 and the guide protrusion 34 are provided at equal intervals in the circumferential direction around the rotation axis 100.

  As shown in FIGS. 5 and 6, a cam follower 41 is interposed between the rotating body 10 and the operating body 30. As shown in FIG. 11, the cam follower 41 includes an annular portion 42 having a circular second through hole 83 formed in the center, and a direction (downward direction) from the annular portion 42 to the disc portion 11 of the rotating body 10. ) And a pair of curved plate portions 43A and 43B. The center of the second through hole 83 of the annular portion 42 is disposed on the rotation axis 100 of the rotating body 10. The pair of curved plate portions 43 </ b> A and 43 </ b> B are curved in an arc shape along the outer edge of the annular portion 42, and face the radial direction of the annular portion 42.

  As shown in FIG. 10 and FIG. 12 (b), undulations in the direction of the rotation axis 100 are formed on the end of the operating body 30 on the disk part 11 side, that is, the base of the rotating body 10. The 1st crown-shaped part 45 which continued in the annular | circular shape is formed as continuing in circular arc shape along the circumferential direction. As shown in FIG. 11 and FIG. 12C, the outer peripheral side of the pair of curved plate portions 43 </ b> A and 43 </ b> B of the cam follower 41 is positioned to face the first coronal portion 45. A meshable second crown 47 is formed. The chevron 46 that forms the undulations of the first crown 45 is in the same direction as the first slope 46 a that is inclined in the direction away from the disk portion 11 of the rotating body 10 (upward) in the circumferential direction of the operating body 30. And a second inclined surface 46b that is inclined in a direction approaching the disk portion 11 of the rotating body 10 (downward). The first slope 46a is set longer and gentler than the second slope 46b. The chevron teeth 48 that form the undulations of the second coronal portion 47 are a first inclined surface 48 a that is inclined in a direction away from the disk portion 11 of the rotating body 10 in the circumferential direction of the operating body 30, and the rotating body 10 in the same direction. And a second inclined surface 48b that inclines in a direction approaching the disc portion 11. The first slope 48a is set to a longer and gentler slope than the second slope 48b. The first slope 46a of the first crown 45 and the first slope 48a of the second crown 47 are set to have substantially the same length in the circumferential direction. The second slope 46b of the first crown 45 and the second slope 48b of the second crown 47 are set to have substantially the same length in the circumferential direction. The crest 48c of the chevron 48 of the second crown 47 is rounded in the circumferential direction.

  The cam follower 41 is spline-coupled to the rotating body 10 so that the cam follower 41 can rotate integrally with the rotating body 10 around the rotating axis 100 and linearly moves in the direction of the rotating axis 100 with respect to the rotating body 10. Is possible. The splan coupling is formed on the inner peripheral side of the second coronal portion 47 of the pair of curved plate portions 43A and 43B of the cam follower 41, extends in the direction of the rotation axis 100, and opens on the disc portion 11 side of the rotating body 10. A pair of slits 44A and 44B, and a pair of insertion portions 13A having a curved plate shape that is substantially the same as, for example, a pair of curved plate portions 43A and 43B formed to protrude from the rotating body 10 and inserted into the slits 44A and 44B. , 13B.

  As shown in FIGS. 5 and 6, between the disc portion 11 of the rotating body 10 and the annular portion 42 of the cam follower 41, the cam follower 41 is in the direction of the initial position (position shown in FIG. 6) in the direction of the rotation axis 100. A return spring 49 is provided for biasing. The return spring 49 is located on the inner peripheral side of the pair of curved plate portions 43A and 43B of the cam follower 41 in a state where the cylindrical shaft portion 4b is inserted.

  On the outer peripheral surface as the outer peripheral side of the second crown-shaped portion 47 of the cam follower 41, a cam portion 50 is formed to protrude outward. Formed on the inner peripheral surface of the hole 3 a of the housing 2 is a guide portion 51 that guides the cam portion 50 and regulates the operation of the cam follower 41 interlocked with the pressing operation of the operating body 30. As shown in FIG. 12A, the guide portion 51 is provided with a plurality of the above-described rotation prevention portions 52 into which the guide protrusions 34 of the operating body 30 are inserted intermittently around the cam follower 41. A rotation guide part 53 provided between adjacent rotation prevention parts 52, and a return prevention part 54a provided on the rotation guide part 53 and engaged with the cam part 50. Have

  In addition to extending in the direction of the rotation axis 100, the rotation blocking unit 52 as a rotation blocking unit that guides the cam unit 50 opens to the disk unit 11 side of the rotating body 10. The cam portion 50 is inserted into the rotation blocking portion 52 with the circumferential length around the rotation axis 100 set to be approximately the same as that of the guide protrusion 34 of the operating body 30. As a result, the rotation preventing unit 52 permits the movement of the cam follower 41 from the initial position against the restoring force of the return spring 49 and the return spring 49 to return the cam follower 41 to the initial position, and the rotation axis 100 direction. The cam follower 41 is prevented from rotating in a predetermined range.

  The rotation guide portion 53 is formed between the openings 52 a of the adjacent rotation prevention portions 52, the first inclined surface 53 a extending from one rotation prevention portion 52 of the adjacent rotation prevention portions 52, and the first slope 53 a. A second inclined surface 53b extending from the inclined surface 53a side to the other rotation blocking portion 52. The first and second inclined surfaces 53 a and 53 b are inclined in a direction away from the rotating body 10 in the circumferential direction around the rotation axis 100. By this inclination, the rotation guide portion 53 converts the restoring force of the return spring 49 transmitted from the cam portion 50 into a one-way force and applies it to the cam portion 50. In the present embodiment, the slope of the second slope 53b is steeper than that of the first slope 53a. Moreover, the surface of the cam part 50 on the opposite side to the disc part 11 of the rotary body 10 is an inclined surface inclined substantially at the same angle in the same direction as the first inclined surface 53a. Note that the position of the cam portion 50 is appropriately set together with the position of the guide portion 51.

  The return prevention portion 54a is composed of a step portion formed between the first and second inclined surfaces 53a and 53b, and by locking the cam portion 50, the cam follower 41 is rotated in one direction and returned to the initial position. It comes to stop. The return blocking portion 54a blocks the cam follower 41 from rotating in one direction and returning to the initial position, thereby blocking the return spring 49 from returning the cam follower 41 to the initial position, thereby forming a locked state.

  A concave portion 54 into which the cam portion 50 can be inserted is formed at the center in the circumferential direction of the rotation guide portion 53. The above-described return prevention portion 54a is formed by the bottom portion of the recess 54 and the wall portion located on the one-side rotation side, and a concentric circle around the rotation axis 100 of the recess 54 with respect to the wall portion of the return prevention portion 54a. A reverse wall blocking portion 54b for blocking the rotation of the cam portion 50 in the reverse direction is formed by the wall portion positioned in the reverse direction to the one direction.

  The guide 51 of the housing body 3, the first crown 45 of the operating body 30, the cam follower 41, and the return spring 49 rotate the rotating body 10 by a predetermined angle in one direction in conjunction with the pressing operation of the operating body 30. A ratchet mechanism 40 is configured.

  As shown in FIG. 6, the operating body 30 is formed with a third through hole 84 that penetrates in the direction of the rotation axis 100. The third through-hole 84 is a space surrounded by a hole 84 a formed at the end of the operating body 30 on the pressed side and the first tubular portion 31 extending from the hole 84 a toward the rotating body 10. 84b and an opening 84c that is formed at the bottom of the hole 84a and communicates with the space 84b inside the first cylindrical portion 31 and the hole 84a. Each of the holes 84a, the space 84b, and the opening 84c has a circular shape around the rotation axis 100 as shown in FIG. A cylindrical shaft portion 4b is inserted into the first cylindrical portion 31 as shown in FIG.

  As shown in FIG. 6 and FIG. 10C, the operating body 30 is provided on the outer peripheral side of the first cylindrical portion 31 and extends to the rotating body 10 disc portion 11 side from the first cylindrical portion 31. Two cylindrical portions 32 are provided. Between this 2nd cylindrical part 32 and the 1st cylindrical part 31, the cylindrical space 33 which has a wall part in the edge part on the opposite side to the disc part 11 side of the rotary body 10 is formed. On the inner peripheral side of the second cylindrical portion 32, the cam follower 41 is inserted from the rotating body 10 side, and the first cylindrical portion 31 is inserted in the second through hole 83 of the cam follower 41. At that time, the annular portion 42 of the cam follower 41 is located in the cylindrical space 33. In the cylindrical space 33, a buffer spring 60 having a spring load smaller than that of the return spring 49 is disposed between the operating body 30 and the annular portion 42 of the cam follower 41. The buffer spring 60 and the return spring 49 are arranged in the direction of the rotation axis 100 with the annular portion 42 of the cam follower 41 interposed therebetween. The first coronal portion 45 described above is provided on the second tubular portion 32 of the operating body 30.

  As shown in FIG. 6, the top surface of the first cylindrical portion 31 of the operating body 30 that protrudes to the outer peripheral side of the first cylindrical portion 31 that is a locking portion at the end of the rotating body 10 on the disk portion 11 side. A projection 71 having an annular shape is provided. The projecting portion 71 is formed by an outer edge portion of an annular member 70 (see FIG. 5) having an outer diameter larger than the outer diameter of the first cylindrical portion 31. The annular member 70 is attached to the end of the first cylindrical portion 31 rotating body 10 on the disc portion 11 side in a state where the first cylindrical portion 31 is inserted into the second through hole 83 of the cam follower 41. At the edge of the second through hole 83 of the cam follower 41, a separation preventing portion 72 that prevents the operation body 30 from moving in a direction away from the rotating body 10 by locking the protrusion 71 is formed. The separation preventing portion 72 protrudes from the annular portion 42 in the direction of the disc portion 11 of the rotating body 10 (downward in FIG. 6), and forms an annular shape along the edge of the second through hole 83. The amount of protrusion of the separation preventing portion 72 in the direction of the disk portion 11 of the rotating body 10 is such that the return of the cam follower 41 to the initial position by the return spring 49 is locked by the return blocking portion 54a. It is set to prevent the operation body 30 from moving in a direction away from the plate portion 11 (upward direction in FIG. 6).

  As shown in FIG. 6, the centers of the first through hole 82 of the rotating body 10, the second through hole 83 of the cam follower 41, and the third through hole 84 of the operating body 30 are all located on the rotation axis 100. In addition, an opening 81 is formed in the center of the bottom 4a of the wafer 4 to form a through hole that communicates the outside of the housing 2 with the space inside the cylindrical shaft 4b as a through hole. That is, at the center of the push switch device 1, a light guide path 80 formed of a columnar space extending from the center of the lower surface of the housing 2 to the end portion on the pressing side of the operating body 30 through the first to third through holes 82 to 84. Is formed. The light guide path 80 is set to a dimension in which a light source (not shown) such as an LED can be inserted.

  An example of the operation of the push switch device 1 will be described with reference to FIGS. 6 and 7A and FIGS. FIG. 13 is a diagram showing a flow of a change in the position of the operating body during a push lock operation and a push release operation, where (a) is a front view showing a state where the operating body is positioned at the initial position, and (b) is a front view. The front view which shows the state by which the operation body was pressed to the limit position, (c) is a front view which shows the state by which the operation body was prevented from returning. 14 is a longitudinal cross-sectional view of the push switch device in the state shown in FIG. 13B, where FIG. 14A is a cross-sectional view corresponding to FIG. 6A, and FIG. 14B corresponds to FIG. It is sectional drawing. FIG. 15 is a longitudinal sectional view of the push switch device in the state shown in FIG. 13C, where FIG. 15A is a sectional view corresponding to FIG. 6A, and FIG. 15B corresponds to FIG. FIG. FIG. 16 is a diagram showing the operation of the cam portion in the ratchet mechanism during the push-lock operation, with the guide portion of the housing, the first coronal portion of the operating body, and the second coronal portion of the cam follower being developed. FIG. 17 is a diagram illustrating the operation of the cam portion in the ratchet mechanism during the push-release operation, with the guide portion of the housing, the first coronal portion of the operating body, and the second coronal portion of the cam follower being developed.

[During push lock operation]
First, an operation of the push switch device 1 during a push lock operation, that is, a pressing operation of the operating body 30 for locking the cam follower 41 to the position on the disk portion 11 side of the rotating body 10 from the initial position will be described.

  In the state where the cam follower 41 is located at the initial position shown in FIG. 6, the cam portion 50 of the cam follower 41 is located in the rotation prevention portion 52 as shown in FIG. The rotation of the cam follower 41 is blocked by 52 and the cam follower 41 is allowed to move against the restoring force of the return spring 49. Further, the movement of the operating body 30 in the direction of the disk portion 11 (downward) of the rotating body 10 is suppressed by applying the restoring force of the return spring 49 to the operating body 30 via the cam follower 41. The operating body 30 is held at the initial position shown in FIG. 6 with the guide projection 34 contacting the upper end of the rotation restricting portion 52. At this time, as shown in FIG. 13A, the operating body 30 is in a state of protruding from the housing 2 by the protruding amount A.

  Further, in a state where the rotation of the cam follower 41 is blocked by the rotation blocking unit 52, the rotating body 10 that is splined to the cam follower 41 is also blocked from rotating. At this time, the first and second fixed contacts 22A and 22B shown in FIG. 7A are in contact with the first and second movable contacts 24a and 24b of the conductive sliding body 23, respectively. It has become.

  When the user applies a pressing force larger than the restoring force of the return spring 49 to the operating body 30 shown in FIG. 13A, the second coronal part 47 of the cam follower 41 is pressed by the first coronal part 45 of the operating body 30. As a result, the operating body 30 and the cam follower 41 move in a direction approaching the disc portion 11 of the rotating body 10 while integrally compressing the return spring 49. As a result, the cam follower 41 moves out of a predetermined range in the direction of the rotation axis 100, and accordingly, the cam portion 50 moves from the rotation prevention portion 52 to the disc portion 11 of the rotating body 10 as shown in FIG. And the cam follower 41 is allowed to rotate.

  In this state, the second coronal portion 47 of the cam follower 41 is pressed against the first coronal portion 45 by the restoring force of the return spring 49, so that the second coronal shape from the first inclined surface 46 a of the angle tooth 46 of the first coronal portion 45. A force in one direction (the right direction in FIG. 16) acts on the first inclined surface 48a of the chevron 48 of the portion 47. Accordingly, as shown in FIG. 16 (3), the first inclined surface 48 a of the chevron 48 of the second crown 47 has the first chevron 46 of the first coronal 45 while rotating the cam follower 41 in one direction. It moves along the slope 46a. As a result, the second coronal part 47 meshes with the first coronal part 45. Accordingly, the cam portion 50 moves to a position overlapping the first inclined surface 53a of the rotation guide portion 53 in the direction of the rotation axis 100.

  After the first coronal part 45 and the second coronal part 47 mesh with each other, the user pushes the operating body 30 and the cam follower 41 further in a direction approaching the disc part 11 of the rotating body 10. Accordingly, as shown in FIG. 16 (4), the cam portion 50 moves in a direction away from the first inclined surface 53a. When the movement of the cam follower 41 in the direction of approaching the disc portion 11 of the rotating body 10 proceeds, finally, the end of the cam follower 41 on the second crown-shaped portion 47 side is the circle of the rotating body 10 as shown in FIG. When the disk unit 11 is reached, the disk unit 11 is prevented from moving the operating body 30 and the cam follower 41 in the direction of approaching the disk unit 11 of the rotating body 10, that is, the operating body 30 is pressed to the limit position. It becomes the operated state. At this time, as shown in FIG. 13B, the operating body 30 protrudes from the housing 2 by the protrusion amount B.

  When the user stops applying the pressing force to the operating body 30 in this state, the cam follower 41 moves away from the disk portion 11 of the rotating body 10 while pushing back the operating body 30 by the restoring force of the return spring 49. Thereby, as shown in FIG. 16 (5), the cam part 50 reaches the 1st slope 53a. At this time, the surface of the rotating member 10 opposite to the disk portion 11 of the cam portion 50 is pressed against the first inclined surface 53a by the restoring force of the return spring 49, so that the cam portion 50 is unidirectional from the first inclined surface 53a to the cam portion 50. The force of acts. As a result, as shown in FIG. 16 (6), the cam portion 50 moves along the first slope 53 a while rotating the cam follower 41 in one direction. As the cam portion 50 moves, the chevron 48 of the second crown 47 of the cam follower 41 presses the second slope 46b of the chevron 46 of the first crown 45 with its second slope 48b. 30 is moved in one direction while moving away from the disk portion 11 of the rotating body 10, whereby the crest portion 48 c of the chevron tooth 48 gets over the crest portion 46 c of the chevron tooth 46. The movement of the chevron 48 is smoothly performed by the roundness of the top 48c.

  As a result of the movement of the cam portion 50 in one direction, the cam portion 50 fits into the recess 54 as shown in FIG. In the state where the cam portion 50 is fitted in the recess 54, the return prevention portion 54a locks and prevents the cam portion 50 from moving in one direction and returning to the initial position. The reverse rotation prevention portion 54b locks the cam portion 50 to prevent the movement in the reverse direction (left direction in FIG. 16). Thereby, the cam follower 41 is in a locked state in which the return to the initial position is prevented. Along with this, the operating body 30 stops at a position closer to the disk portion 11 of the rotating body 10 than the initial position, and as shown in FIG. 13 (c), only the projection amount C (B <C <A) from the housing 2 is obtained. Protruding state.

  As described above, the rotating body 10 rotates integrally with the cam follower 41 while the cam follower 41 rotates in one direction with the movement of the cam portion 50 from the rotation preventing portion 52 to the recess 54. When the cam follower 41 is in the locked state, the first and fourth fixed contacts 22A and 22D shown in FIG. 7A are respectively connected to the first and second movable contacts 24a and 24b of the conductive sliding body 23. The second state is in contact with each other.

  Further, in the locked state, as shown in FIG. 15, the separation preventing portion 72 of the cam follower 41 is operated in a direction in which the protruding portion 71 of the first cylindrical portion 31 is locked to move away from the disc portion 11 of the rotating body 10. The movement of the body 30 is prevented. Thereby, even if the attitude of the housing 2 is not held so that the operating body 30 is positioned above the cam follower 41, for example, the attitude of the housing 2 is maintained so that the operating body 30 is positioned below the cam follower 41. Even if the operating body 30 is operated, the operating body 30 is held at a position closer to the disk portion 11 of the rotating body 10 than when the cam follower 41 is positioned at the initial position, that is, in a state protruding from the housing 2 by the protruding amount C. .

[During push release operation]
Next, an operation of the push switch device 1 during a push release operation, that is, a pressing operation of the operating body 30 for releasing the above-described locked state will be described.

  In the locked state, as shown in FIG. 13C, the operating body 30 is in a state of protruding from the housing 2 by the protruding amount C. Further, as shown in FIG. 17A (the same diagram as FIG. 16A described above), the cam portion 50 of the cam follower 41 is in a state of being fitted in the concave portion 54, and the second crown portion 45 is The crown 47 is not engaged. In the present embodiment, the first coronal part 45 and the second coronal part 47 have a gap.

  When the user applies a pressing force larger than the restoring force of the return spring 49 to the operation body 30 shown in FIG. 13C, the first crown 45 of the operation body 30 causes the operation body 30 to move as shown in FIG. When the second coronal portion 47 of the cam follower 41 is pressed, the operating body 30 and the cam follower 41 move in a direction approaching the disk portion 11 of the rotating body 10 while compressing the return spring 49 integrally. Thereby, as shown in FIG. 17 (3), the cam portion 50 is detached from the concave portion 54 in the direction of the disk portion 11 of the rotating body 10, and the cam follower 41 is allowed to rotate in one direction.

  In this state, the second coronal portion 47 of the cam follower 41 is pressed against the first coronal portion 45 by the restoring force of the return spring 49, so that the second coronal shape from the first inclined surface 46 a of the angle tooth 46 of the first coronal portion 45. A force in one direction (the right direction in FIG. 17) acts on the first inclined surface 48 a of the chevron 48 of the portion 47. Accordingly, as shown in FIG. 17 (4), the first inclined surface 48a of the chevron 48 of the second crown 47 has the first chevron 46 of the first coronal 45 while rotating the cam follower 41 in one direction. It moves along the slope 46a. As a result, the second coronal part 47 meshes with the first coronal part 45. Accordingly, the cam portion 50 moves to a position where it overlaps with the second inclined surface 53b of the rotation guide portion 53 in the direction of the rotation axis 100.

  After the first coronal part 45 and the second coronal part 47 mesh with each other, the user pushes the operating body 30 and the cam follower 41 further in a direction approaching the disc part 11 of the rotating body 10. Accordingly, as shown in FIG. 17 (5), the cam portion 50 moves in a direction away from the second slope 53b. When the movement of the cam follower 41 in the direction of approaching the disc portion 11 of the rotating body 10 proceeds, finally, the end of the cam follower 41 on the second crown-shaped portion 47 side is the circle of the rotating body 10 as shown in FIG. A state in which the disk portion 11 is reached and the movement of the operating body 30 and the cam follower 41 in the direction of approaching the disk portion 11 of the rotating body 10 of the operating body 30 is blocked, that is, the operating body 30 is pressed to the limit position. It will be in the state. At this time, as shown in FIG. 13B, the operating body 30 protrudes from the housing 2 by the protrusion amount B.

  When the user stops applying the pressing force to the operating body 30 in this state, the cam follower 41 moves away from the disk portion 11 of the rotating body 10 while pushing back the operating body 30 by the restoring force of the return spring 49. Thereby, as shown in FIG. 17 (6), the cam part 50 reaches the 2nd slope 53b. At this time, since the cam portion 50 is pressed against the second inclined surface 53b by the restoring force of the return spring 49, a unidirectional force acts on the cam portion 50 from the second inclined surface 53b. As a result, the cam portion 50 moves along the second inclined surface 53b while rotating the cam follower 41 in one direction (in this embodiment, the second inclined surface 53b is steeper than the first inclined surface 53a. The corner portions are in contact with each other.) As shown in FIG. 17 (7), the rotation prevention portion 52 adjacent to the rotation prevention portion 52 located before the locked state is entered. As the cam portion 50 moves, the chevron 48 of the second crown 47 of the cam follower 41 presses the second slope 46b of the chevron 46 of the first crown 45 with its second slope 48b. 30 is moved in one direction while moving away from the rotating body 10, so that the top portion 48 c of the chevron tooth 48 gets over the top portion 46 c of the chevron tooth 46. The movement of the chevron 48 is smoothly performed by the roundness of the top 48c.

  When the cam part 50 enters the rotation prevention part 52, the return of the cam follower 41 to the initial position is permitted, and the cam follower 41 is guided by the rotation prevention part 52 at the position of the cam part 50 as shown in FIG. In addition, while the operating body 30 is pushed and moved, it returns to the initial position as the return spring 49 is restored. As a result, the operating body 30 returns to the initial position, that is, the state in which the operating body 30 protrudes from the housing 2 by the protrusion amount A as shown in FIG.

  As described above, the rotating body 10 rotates integrally with the cam follower 41 while the cam follower 41 rotates in one direction with the movement of the cam portion 50 from the recess 54 to the rotation prevention portion 52. When the cam follower 41 returns to the initial position from the locked state, the first and third fixed contacts 22A and 22C shown in FIG. 7A are respectively connected to the first and second movable contacts 24a of the conductive sliding body 23. , 24b are in a third state in contact with each other. By repeating the above-described operation, the above-described fourth to eighth states are obtained.

  According to the push switch device 1 according to the present embodiment, the following effects can be obtained.

  Since the push switch device 1 includes the light guide path 80 including a columnar space as a through hole extending from the center of the lower surface of the housing 2 to the end of the operating body 30 to be pressed, from the center of the lower surface of the housing 2. The light incident on one end of the light guide path 80 is radiated from the other end of the light guide path 80, that is, the hole 84 a at the end of the operation body 30 on which the operation body 30 is pressed. Looks like. That is, according to the push switch device 1, the operation body 30 is pressed only by arranging the light source of the illumination light on the side pressed by the operation body 30 at a position where light can be incident on one end of the light guide path 80. Illumination can be performed with the side that appears to emit light. Therefore, it is easy to illuminate the pressed side of the operating body 30.

  In the push switch device 1, the light guide path 80 is set to a dimension in which a light source such as an LED can be inserted. As a result, an illumination light source can be arranged in the light guide path 80 to reduce light leakage to the outside of the light guide path 80, and therefore it is easy to ensure brightness of illumination.

  In the push switch device 1, the first, third, fifth, and fifth detection means 20 in which the first fixed contact 22 </ b> A and the second fixed contact 22 </ b> B or the third fixed contact 22 </ b> C are conducted through the conductive sliding body 23. The seventh state, and the second, fourth, sixth and sixth of the detecting means 20 in which the first fixed contact 22A and the fourth fixed contact 22D or the fifth fixed contact 22E are conducted through the conductive sliding body 23. The eight states can be discriminated by the difference in the stop position of the operating body 30 in the direction of the rotation axis 100, that is, the protruding amount A and the protruding amount C of the operating body 30 from the housing 2.

  In the push switch device 1, the cam portion 50 is formed by a protrusion formed on the cam follower 41, and the rotation prevention portion 52 is formed by a linear groove extending in the direction of the rotation axis 100 and opening to the disk portion 11 side of the rotating body 10. . The rotation guide portion 53 has a first slope 53a and a second slope 53b. The return prevention part 54a and the reverse rotation prevention part 54b are stepped parts. These cam part 50, rotation prevention part 52, rotation guide part 53, and return prevention part 54a can be easily provided by resin molding, and can function reliably.

  In the push switch device 1, the reverse rotation preventing portion 54b locks the cam portion 50 to prevent the cam follower 41 from rotating in the direction opposite to the one direction. Thereby, the rotation of the rotating body 10 in the reverse direction can be prevented, and the state of the detection means 20 can be prevented from being in a state not corresponding to the stop position (projection amount) of the operating body 30 in the direction of the rotation axis 100. .

  In the push switch device 1, the buffer spring 60 performs buffering between the operating body 30 and the cam follower 41, for example, when the first coronal portion 45 and the second coronal portion 47 generated between the operating body 30 and the cam follower 41 are engaged. Reduce the impact sound. Further, rattling of the operating body 30 with respect to the cam follower 41 can be prevented. As a result, the quality of the push switch device 1 can be improved.

  In the push switch device 1, since the return spring 49 and the buffer spring 60 are arranged side by side in the direction of the rotation axis 100, the dimensions of the push switch device 1 in the radial direction of the circle around the rotation axis 100 are easy to shorten.

  In the push switch device 1, the separation preventing unit 72 is separated from the disk unit 11 of the rotating body 10 in a state (locked state) in which the return spring 49 prevents the return of the cam follower 41 to the initial position by the return blocking unit 54 a. The movement of the operating body 30 in the direction is prevented. Thereby, even if the attitude of the housing 2 is not held so that the operating body 30 is positioned above the cam follower 41, for example, the attitude of the housing 2 is maintained so that the operating body 30 is positioned below the cam follower 41. Even if it is, the stop position of the operating body 30 in the locked state can be held at a position closer to the disk portion 11 of the rotating body 10 than when the cam follower 41 is positioned at the initial position. That is, the stop position of the operating body 30 in the direction of the rotation axis 100, that is, the amount of protrusion of the operating body 30 from the housing 2, when the cam follower 41 is positioned at the initial position, and when the cam follower 41 returns to the initial position. It can be made different regardless of the attitude of the housing 2 when it is blocked by 54a.

  The push switch device 1 includes a protrusion 71 provided at an end of the first cylindrical portion 31 on the disk portion 11 side of the rotating body 10 and a separation formed at the edge of the second through hole 83 of the cam follower 41. Due to the simple configuration comprising the blocking portion 72, the cam follower 41 is positioned at the initial position and the return of the cam follower 41 to the initial position is blocked by the return blocking portion 54a regardless of the attitude of the housing 2. The position of the operating body 30 in the direction of the rotation axis 100 can be varied.

  In the push switch device 1, since the slits 44 </ b> A and 44 </ b> B are formed on the inner peripheral side of the second crown-shaped portion 47 of the cam follower 41, the spline coupling portion between the cam follower 41 and the rotating body 10 is located more than the second crown-shaped portion 47. Can be placed inside. Thereby, the dimension of the push switch device 1 in the radial direction of the circle around the rotation axis 100 can be easily shortened.

  The present invention is not limited to the above-described embodiment, and may be configured as follows.

  In the push switch device 1 according to the above-described embodiment, the entire light guide path 80 is formed of a columnar space as a through hole, but the present invention is not limited thereto. The light guide path may be one in which a translucent resin is filled inside the hole 84a of the operation body 30 or the cylindrical shaft portion 4b. Moreover, you may replace the cylindrical shaft part 4b as a shaft part with the solid cylindrical shaft part which consists entirely of translucent resin.

  In the push switch device 1 according to the above-described embodiment, the rotation guide portion 53 is formed with the reverse rotation prevention portion 54b. However, the movement of the cam portion 50 in the direction opposite to the one direction is increased in the gradient of the first inclined surface 53a. The reverse rotation prevention unit 54b may be omitted.

  In the push switch device 1 according to the above-described embodiment, the protruding portion 71 includes the disc portion 11 of the rotating body 10 of the first cylindrical portion 31 after the first cylindrical portion 31 is inserted into the second through hole 83. Although formed by the annular member 70 attached to the end portion on the side, the present invention does not limit the protruding portion. One or more pairs of leaf springs facing each other in the radial direction are extended from the end of the first cylindrical portion 31 on the disk portion 11 side of the rotating body 10 in the direction of the disk portion 11 of the rotating body 10, and these Claws may be provided at the tips of the leaf springs, and these claws may be snapped into the second through holes 83 so that these claws function as protrusions. Further, the length of the first cylindrical portion 31 and the second cylindrical portion 32 provided with the protruding portion 71 is longer with the second cylindrical portion 32 extending toward the rotating body 10, but the length relationship is particularly For example, the same may be used.

  In the push switch device 1 according to the above-described embodiment, the detection unit 20 includes the first and second movable contacts 24a and 24b as the detected portions, and the first to fifth fixed contacts 22A to 22E as the detection portions. However, the present invention does not limit the detection means. The detected part may be a magnet, and the detecting part may be a magnetic detecting element.

  The push switch device 1 according to the above-described embodiment enables the operation body 30 to linearly move in the direction of the rotation axis 100 of the rotating body 10 with respect to the housing 2 and disables the rotation of the operation body 30 around the rotation axis 100. As a rotation blocking structure, a rotation blocking portion 52 provided in the housing 2 and a guide projection 34 provided on the outer peripheral surface of the operating body 30 (second cylindrical portion 32) are provided. The present invention does not limit the rotation blocking structure of the operating body. As another example, a groove extending in the direction of the rotation axis 100 is formed on the outer peripheral surface of the cylindrical shaft portion 4b, a guide protrusion is formed on the inner peripheral surface of the first cylindrical portion 31, and the guide protrusion is inserted into the groove. There is what I did. Moreover, in the above-described embodiment, the housing 2 side and the operating body 30 side are reversed in the relationship between the protrusions and recesses of the rotation preventing portion 52 and the guide protrusion 34, or the housing 2 side and the operating body 30 side in the other examples. The relationship between the concave and convex portions of the groove and the guide protrusion may be reversed. In the push switch device 1 according to the above-described embodiment, the first coronal part 45 is continuous in an annular shape, and the second coronal part 47 is partly cut out and connected in an arc shape. The second crown 47 may be continuous in an annular shape, with the cam follower 41 rotating in one direction and the rotating body 10 rotating in one direction. That is good. Further, one end portion of the return spring 49 is brought into contact with the disc portion 11 to urge the cam follower 41 to the initial position. For example, a receiving portion is provided on the outer peripheral side of the cylindrical shaft portion 4b and the returning portion is returned to the receiving portion. One end of the spring 49 may be brought into contact, and is not limited to the above-described embodiment.

It is a perspective view of the push switch device concerning one embodiment of the present invention. FIG. 2 is a front view of the push switch device shown in FIG. 1. FIG. 2 is a top view of the push switch device shown in FIG. 1. FIG. 2 is a side view showing a state where the push switch device shown in FIG. 1 is installed on a substrate. FIG. 2 is an exploded perspective view of the push switch device shown in FIG. 1. It is a figure which expands and shows the longitudinal cross-section of the push switch apparatus shown by FIG. 1, Comprising: (a) is VIa-VIa sectional drawing of FIG. 2, (b) is VIb-VIb sectional drawing of the same FIG. . It is a figure which expands and shows the wafer single-piece | unit with which the push switch apparatus shown by FIG. 1 was equipped, (a) is a top view, (b) is a side view, (c) is a front view. It is a figure which expands and shows the rotary body single unit with which the push switch apparatus shown by FIG. 1 was equipped, (a) is a top view, (b) is a side view, (c) is a bottom view. It is a figure which expands and shows the housing simple substance with which the push switch apparatus shown by FIG. 1 was equipped, (a) is a top view, (b) is a bottom view, (c) is cc cross section of (a). FIG. It is a figure which expands and shows the operation body single-piece | unit with which the push switch apparatus shown by FIG. 1 was equipped, (a) Top view, (b) Side view, (c) Bottom view. It is a figure which expands and shows the cam follower simple substance with which the push switch apparatus shown by FIG. 1 was equipped, (a) is a top view, (b) is a side view. 1. Expand and expand (a) guide part of housing, (b) first coronal part of operating body and (c) second coronal part of cam follower included in the ratchet mechanism provided in the push switch device shown in FIG. It is a figure shown. It is a figure which shows the flow of a change of the position of the operation body at the time of push lock operation and push release operation, Comprising: (a) is a front view which shows the state which the operation body was located in the initial position, (b) is an operation body. FIG. 4C is a front view showing a state where the pressing operation is performed to the limit position, and FIG. 5C is a front view showing a state where the operating body is prevented from returning. 13A and 13B are longitudinal sectional views of the push switch device in the state shown in FIG. 13B, wherein FIG. 13A is a sectional view corresponding to FIG. 6A, and FIG. 13B is a sectional view corresponding to FIG. is there. 13A and 13B are longitudinal sectional views of the push switch device in the state shown in FIG. 13C, where FIG. 13A is a sectional view corresponding to FIG. 6A, and FIG. 13B is a sectional view corresponding to FIG. It is. It is a figure which expands and shows the operation | movement of the cam part in the ratchet mechanism at the time of push-lock operation, the guide part of a housing, the 1st coronal part of an operating body, and the 2nd coronal part of a cam follower. It is a figure which expands and shows the operation | movement of the cam part in the ratchet mechanism at the time of push release operation, the guide part of a housing, the 1st coronal part of an operating body, and the 2nd coronal part of a cam follower.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Push switch apparatus 2 Housing 3 Housing main body 3a Hole 4 Wafer 4a Bottom part 4b Cylindrical shaft part (shaft part)
DESCRIPTION OF SYMBOLS 10 Rotating body 11 Disk part 11a, 11b Fitting protrusion 12 Cylindrical part 13A, 13B Insertion part 20 Detection means 21A-21D 1st-4th external terminal 22A-22E 1st-5th fixed contact 23 Conductive sliding body 23a , 23b Fitting holes 24a, 24b First and second movable contacts 30 Operating body 31 First cylindrical portion 32 Second cylindrical portion 33 Cylindrical space 34 Guide protrusion 40 Ratchet mechanism 41 Cam follower 42 Annular portion 43A, 43B Curved Plate portions 44A, 44B Slit 45 First crown portion 46 Angle tooth 46a First slope 46b Second slope 46c Top 47 Second crown portion 48 Angle tooth
48a First slope 48b Second slope 48c Top 49 Return spring 50 Cam part 51 Guide part 52 Rotation prevention part 52a Opening part 53 Rotation guide part 53a First slope 53b Second slope 54 Recess 54a Return prevention part 54b Reverse rotation prevention part 60 Buffer Spring 70 Ring member 71 Protruding part (locking part)
72 Separation prevention unit 80 Light guide path 81 Opening (through hole)
82 1st through-hole 83 2nd through-hole 84 3rd through-hole 84a Hole 84b Space 84c Opening 90 Circuit board 90a, 90b Hole 100 Rotation axis

Claims (11)

A housing, a rotating body rotatably provided in the housing, detection means for generating a signal in accordance with a change in the rotation angle of the rotating body, and a linear motion in the rotational axis direction of the rotating body with respect to the housing; An operating body that is capable of being rotated around the rotational axis and is coupled between the rotating body and the operating body so as to be integrally rotatable with the rotating body. A push switch device including a movable cam follower, and a ratchet mechanism that rotates the rotating body by a predetermined angle in one direction in conjunction with a pressing operation of the operating body,
The housing is provided with a shaft portion extending along the rotation axis direction, the rotating body is provided with a first through hole penetrating in the rotation axis direction, and the cam follower is provided with the rotation axis direction. A penetrating second through hole is provided, the operating body is provided with a third through hole penetrating in the rotational axis direction, and the first to third through holes are inserted into the shaft portion;
A push switch device, wherein a light guide path is provided in the shaft portion. In the invention of claim 1,
The push switch device, wherein the light guide path is formed by a through-hole portion provided in the shaft portion. In the invention according to claim 1 or 2,
The ratchet mechanism includes a return spring that urges the cam follower toward an initial position in the rotation axis direction, and a undulation in the rotation axis direction that is provided on the rotation body side of the operation body. A coronal part; a second coronal part that is provided on the cam follower and is opposed to the first coronal part; and is engageable with the first coronal part; and provided on an outer peripheral side of the second coronal part. A cam portion, and a guide portion that is formed on the inner surface of the housing and guides the cam portion to regulate the operation of the cam follower interlocked with the pressing operation of the operating body.
A plurality of the guide parts are intermittently provided around the cam follower and engaged with the cam part, a rotation guide part provided between the adjacent rotation prevention parts, and the rotation guide part A return prevention portion provided in the middle and engaged with the cam portion;
The rotation prevention unit permits movement against the restoring force of the return spring from the initial position of the cam follower and return to the initial position of the cam follower by the return spring, and in a predetermined range in the rotation axis direction. Formed in a shape to prevent rotation of the cam follower by locking the cam portion,
The rotation guide portion is formed in a shape that converts the restoring force of the return spring transmitted from the cam portion into the unidirectional force and applies the force to the cam portion.
The return prevention unit allows the cam follower to move in a direction against the restoring force of the return spring, and locks the cam unit to rotate the cam follower in the one direction and return to the initial position. A push switch device, wherein the push switch device is formed in a blocking shape. In the invention of claim 3,
The cam portion is composed of a protruding portion that protrudes more outward than the second coronal portion,
The rotation blocking portion is a groove extending in the rotation axis direction and opening to the rotating body side so that the cam portion can be inserted therein.
The rotation guide portion extends from an opening end of one of the rotation prevention portions adjacent to the rotation prevention portion, and is inclined in a direction away from the rotating body in a circumferential direction around the rotation axis, and A second inclined surface extending from the first inclined surface side to the opening end of the other rotation blocking portion and inclined in the same direction as the first inclined surface;
The push switch device according to claim 1, wherein the return blocking portion includes a step portion formed between the first slope and the second slope. In the invention of claim 4,
A recess into which the cam portion can be inserted is provided between the first inclined surface and the stepped portion, and the recess has a reverse blocking portion that prevents rotation of the cam portion in a direction opposite to the one direction. A push switch device characterized in that a blocking portion is formed. In the invention according to any one of claims 1 to 5,
The operating body includes a first tubular portion that forms the third through hole, and a second tubular portion in which the first crown-shaped portion is provided on the outer peripheral side of the first tubular portion, and these Between the first cylindrical portion and the second cylindrical portion, a cylindrical space having a wall portion on the side opposite to the rotating body side is formed,
The cam follower is inserted into the inner peripheral side of the second cylindrical part from the rotating body side, the first cylindrical part is inserted into the second through hole of the cam follower,
A push switch device, wherein a buffer spring having a spring load smaller than that of the return spring is disposed between the operating body in the cylindrical space and the cam follower. In the invention of claim 6,
The push switch device, wherein the return spring and the buffer spring are arranged side by side in the rotation axis direction. In the invention according to any one of claims 3 to 7,
The cam follower is provided with movement of the operating body in a direction away from the rotating body in a locked state in which the return to the initial position of the cam follower by the return spring is blocked by the return blocking portion. A push switch device comprising a separation preventing portion for preventing the engaging portion by engaging the engaging portion. In the invention according to claim 6 or 7,
The front end side of the first cylindrical part is provided with a protruding part protruding outward,
The push switch device according to claim 1, wherein the cam follower is formed with a separation preventing portion that prevents movement of the operation body in a direction away from the rotating body by engaging the protrusion. In the invention according to any one of claims 1 to 9,
The cam follower is capable of linear movement in the direction of the rotation axis in a state of being coupled to the rotating body so as to be integrally rotatable by spline coupling with the rotating body,
The splan coupling is formed by cutting out a part of the second coronal portion of the cam follower and extending in the rotation axis direction and opening on the rotating body side, and protruding from the rotating body and inserted into the slit. And a push switch device characterized by comprising an inserted portion. In the invention according to any one of claims 1 to 10,
The detecting means includes a movable contact provided integrally with the rotating body so as to be rotatable, and a fixed contact fixed to the housing and contacting and separating from the movable contact. .

Images