JP2019071166A - Push switch - Google Patents

Abstract

An object of the present invention is to provide a push switch having a simple structure by reducing the number of parts. An operating body having a first ratchet tooth, a lifting cam member having a first cam crest arranged in a circumferential direction, and a second ratchet tooth engaged with the first ratchet tooth. And a rotary cam member 5 having a second cam peak that engages with the first cam peak, a movable contact member 6 that comes into contact with and separates from a terminal with which a contact portion opposes as the rotary cam member 5 rotates, and an operating body 2 that moves up and down. And an elastic member 3 disposed between the cam member 4 and the operating body 2 is pressed so that the first ratchet teeth of the operating body 2 and the second ratchet teeth of the rotating cam member 5 are engaged. When the rotary cam member 5 rotates by a first predetermined angle and the pressing of the operating body 2 is released, the elevating cam member 4 presses the rotary cam member 5 by the urging force of the elastic member 3, whereby the rotary cam member 5 is configured to rotate at a second predetermined angle. . [Selection] Figure 2

Description

  The present invention relates to the structure of a push switch.

  A push switch device in which a cam follower is rotated via a ratchet mechanism by a push operation to an operating body, and a movable contact provided on an actuating member that rotates in conjunction with the cam follower contacts or disengages from a fixed contact. It is known (for example, refer to patent documents 1).

  In the push switch device disclosed in Patent Document 1, for the purpose of reducing the contact noise between the first ratchet teeth provided on the operation body and the second ratchet teeth provided on the cam follower, An elastic member is disposed between the operating body and the cam follower, and a return spring is disposed between the cam follower and the actuating member.

Patent No. 4323301

  However, the push switch device disclosed in Patent Document 1 has a problem that the number of parts increases and the structure becomes complicated by arranging the two springs of the elastic member and the return spring.

  The present invention is made in view of the above-mentioned subject, and it aims at providing a push switch of simple structure by reducing the number of parts.

  In order to solve the above-described conventional problems, the push switch according to the present invention is configured to be movable in the axial direction, and configured to be movable in the axial direction and an operation body provided with a first ratchet tooth. A lift cam member on which a first cam peak having a first inclined surface and a second inclined surface is disposed in the circumferential direction, a second ratchet tooth engaged with the first ratchet tooth, and the first cam It has a second cam crest engaged with a crest, has a rotating cam member configured to be rotatable in the circumferential direction, and a contact portion, and the contact portion is opposed as the rotation cam member rotates. A movable contact member configured to be in contact with and separated from a terminal, and an elastic member disposed between the operating body and the elevation cam member, wherein the first ratchet teeth of the operating body and the elastic member are disposed. The second ratchet teeth of the rotating cam member are engaged When the operating body is pressed, the rotating cam member is rotated by a first predetermined angle, and when the pressing of the operating body is released, the lift cam member presses the rotating cam member by the biasing force of the elastic member. By doing this, the rotation cam member is configured to rotate by a second predetermined angle.

  As a result, by reducing the number of parts, a simple structure can be achieved, and low cost can be achieved.

  The above object, other objects, features and advantages of the present invention will be apparent from the following detailed description of preferred embodiments with reference to the attached drawings.

  ADVANTAGE OF THE INVENTION According to the push switch which concerns on this invention, it becomes a simple structure by reducing the number of parts, and can aim at low cost.

FIG. 1 is a perspective view schematically showing a schematic configuration of a push switch according to the first embodiment. FIG. 2 is an exploded perspective view of the push switch shown in FIG. FIG. 3 is a perspective view schematically showing a schematic configuration of a cover member in the push switch shown in FIG. FIG. 4 is a perspective view schematically showing a schematic configuration of an operating body in the push switch shown in FIG. FIG. 5 is a perspective view schematically showing a schematic configuration of a lift cam member in the push switch shown in FIG. FIG. 6 is a perspective view schematically showing a schematic configuration of a lift cam member in the push switch shown in FIG. FIG. 7 is a perspective view schematically showing a schematic configuration of a rotating cam member in the push switch. FIG. 8 is a perspective view schematically showing a schematic configuration of a rotating cam member in the push switch. FIG. 9 is a perspective view showing a state in which the operating body, the elevation cam member, and the rotation cam member in the push switch shown in FIG. 2 are engaged. FIG. 10 is a perspective view schematically showing a schematic configuration of a movable contact member in the push switch shown in FIG. FIG. 11 is a perspective view schematically showing a schematic configuration of a case member in the push switch shown in FIG. FIG. 12 is an explanatory view schematically showing the operation of the push switch according to the first embodiment. FIG. 13 is an explanatory view schematically showing the operation of the push switch according to the first embodiment. FIG. 14 is an explanatory view schematically showing the operation of the push switch according to the first embodiment. FIG. 15 is an explanatory view schematically showing the operation of the push switch according to the first embodiment. FIG. 16 is an explanatory view schematically showing the operation of the push switch according to the first embodiment. FIG. 17 is an explanatory view schematically showing the operation of the push switch according to the first embodiment. FIG. 18 is an explanatory view schematically showing the operation of the push switch according to the first embodiment. FIG. 19 is an explanatory view schematically showing an operation of the push switch according to the first embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same or corresponding parts will be denoted by the same reference symbols, and overlapping descriptions may be omitted. Further, in all the drawings, components for explaining the present invention are extracted and illustrated, and the other components may be omitted. Furthermore, the present invention is not limited by the following embodiments.

Embodiment 1
The push switch according to the first embodiment is configured to be movable in the axial direction, and is configured to be movable in the axial direction with the operating body provided with the first ratchet teeth, and the first inclined surface and the first An elevation cam member in which a first cam peak having two inclined surfaces is disposed in a circumferential direction, a second ratchet tooth engaged with the first ratchet tooth, and a second cam peak engaged with the first cam peak A movable contact having a rotating cam member configured to be rotatable in the circumferential direction, and a contact portion, wherein the contact portion is configured to be brought into contact with or separated from an opposing terminal as the rotating cam member rotates. And the elastic member disposed between the operating body and the elevation cam member, and the operating body presses so that the first ratchet teeth of the operating body and the second ratchet teeth of the rotating cam member are engaged When it is pressed, the rotating cam member is rotated by the Once, the elevating cam member by the urging force of the elastic member by pressing the rotating cam member, rotating cam member is configured to a second predetermined angle.

  Further, in the push switch according to the first embodiment, the second cam crest has a third inclined surface in contact with the first inclined surface and a fourth inclined surface in contact with the second inclined surface, and the elevation cam member The third inclined surface moves in the direction opposite to the pressing direction of the operating body until the third inclined surface separates from the first inclined surface when the rotating cam member rotates at the first predetermined angle, and the fourth inclined surface has a second inclination When in contact with the surface, it may be configured to move in the pressing direction of the operating body.

  In the push switch according to the first embodiment, the raising and lowering cam member may be formed such that the first inclined surface has a smaller inclination angle than the second inclined surface.

  Further, in the push switch according to the first embodiment, the raising and lowering cam member may be arranged such that the first inclined surface is on the outer peripheral side of the second inclined surface.

  Further, in the push switch according to the first embodiment, the second cam crest has a third inclined surface in contact with the first inclined surface and a fourth inclined surface in contact with the second inclined surface, and the rotating cam member The third inclined surface may be formed to have a smaller inclination angle than the fourth inclined surface.

  Furthermore, in the push switch according to the first embodiment, the second cam crest has a third inclined surface in contact with the first inclined surface and a fourth inclined surface in contact with the second inclined surface, and the rotating cam member The third inclined surface may be disposed on the outer peripheral side of the fourth inclined surface.

Hereinafter, an example of the push switch according to the first embodiment will be described with reference to FIGS. 1 to 19 [Configuration of Push Switch]
FIG. 1 is a perspective view schematically showing a schematic configuration of a push switch according to the first embodiment. FIG. 2 is an exploded perspective view of the push switch shown in FIG. In FIGS. 1 and 2, the vertical direction of the push switch is shown as the vertical direction in the figure.

  As shown in FIGS. 1 and 2, the push switch 100 according to the first embodiment includes a cover member 1, an operating body 2, an elastic member 3, an elevation cam member 4, a rotation cam member 5, a movable contact member 6, and The case member 7 is provided, and by pressing the operating body 2 and releasing the pressing, an ON / OFF signal is output from each connector terminal such as the connector terminals 8 to 10 and the like. The operating body 2 to the movable contact member 6 are accommodated in the internal space of the case member 7, and the upper surface of the case member 7 is closed by the cover member 1.

  Hereinafter, each member which comprises the push switch 100 is demonstrated, referring FIGS. 1-11.

  FIG. 3 is a perspective view schematically showing a schematic configuration of a cover member in the push switch shown in FIG. FIG. 4 is a perspective view schematically showing a schematic configuration of an operating body in the push switch shown in FIG.

  5 and 6 are perspective views schematically showing the schematic configuration of the lift cam member in the push switch shown in FIG. 2, FIG. 5 is a perspective view seen from above, and FIG. It is the perspective view seen from the downward direction. 7 and 8 are perspective views schematically showing the schematic configuration of the rotary cam member in the push switch, and FIG. 7 is a perspective view seen from above, and FIG. 8 is a perspective view seen from below FIG.

  Further, FIG. 9 is a perspective view showing a state in which the operating body, the elevation cam member, and the rotation cam member in the push switch shown in FIG. 2 are engaged. FIG. 10 is a perspective view schematically showing a schematic configuration of a movable contact member in the push switch shown in FIG. FIG. 11 is a perspective view schematically showing a schematic configuration of a case member in the push switch shown in FIG. In addition, in FIG. 11, a part of case member 7 is cut | disconnected and the cut | disconnected cross section is shown to the figure.

  As shown in FIGS. 1 to 3, the cover member 1 is formed in a U-shape, and has a pair of foot portions 1A, foot portions 1B, and a plate-like bottom portion 1C. Notches 1D are formed at the base end portions of the foot 1A and the foot 1B. The notch portion 1D is configured to fix the cover member 1 to the case member 7 by being fitted with an engagement protrusion 71 of the case member 7 described later. Moreover, the through-hole 1E for penetrating the operation body 2 is provided in the main surface of 1 C of bottom parts.

  As shown in FIG. 1, FIG. 2, FIG. 4 and FIG. 9, the operating body 2 has a head 21, a substantially cylindrical main body 22, first guides 23A and 23B, and first ratchet teeth 24A. To 24D, and is configured to be movable in the vertical direction. The head portion 21 is provided to project upward from the upper surface of the main body portion 22 through the neck portion 21A, and is formed in a substantially rectangular parallelepiped shape.

  Second guide grooves 22A and 22B are provided on the outer peripheral surface of the main body portion 22. The second guide grooves 22A and 22B are formed to extend in the vertical direction (axial center direction of the main body portion 22). Further, the second guide grooves 22A and 22B are disposed to face each other when viewed from the radial direction of the main body portion 22.

  Further, on the lower surface of the main body portion 22, first guide portions 23A and 23B protruding outward in an L shape are provided. The first guide portions 23A and 23B are disposed so as to overlap the circumferential surfaces 220A and 220B in which the second guide grooves 22A and 22B are not provided, as viewed from the axial center direction of the main body portion 22. Further, the first guide portions 23A and 23B are disposed to face each other when viewed from the radial direction of the main body portion 22. More specifically, when viewed in the axial center direction of the main body portion 22, the first guide portion 23A is substantially the same as the peripheral surface 220A of one of the peripheral surfaces 220A and 220B in which the second guide grooves 22A and 22B are not provided. It is located in the middle part. Further, the first guide portion 23B is, as viewed from the axial center direction of the main body portion 22, at a substantially central portion of the other peripheral surface 220B of the peripheral surfaces 220A and 220B where the second guide grooves 22A and 22B are not provided. It is arranged.

  The first guide portion 23A is configured to slide along a first guide groove 73A of the case member 7 described later. Similarly, the first guide portion 23B is configured to slide along the first guide groove 73B of the case member 7. Thus, the movement in the axial direction (vertical direction) is guided by the first guide grooves 73A and 73B, and the movement in the circumferential direction is restricted.

  Furthermore, on the lower surface of the main body portion 22, first ratchet teeth 24 </ b> A to 24 </ b> D protruding outward in an L shape along the circumferential direction are provided. The first ratchet teeth 24A, 24D are arranged to overlap the circumferential surface 220A when viewed from the axial center direction of the main body 22. The first ratchet teeth 24A are disposed forward of the first ratchet teeth 24D in the rotational direction (counterclockwise as viewed from above) of the rotation cam member 5 described later. The first ratchet teeth 24B and 24C are arranged to overlap the circumferential surface 220B when viewed from the axial center direction of the main body 22. The first ratchet teeth 24B are disposed forward of the first ratchet teeth 24C in the rotational direction of the rotation cam member 5 described later.

  Each of the first ratchet teeth 24A to 24D has a lower end surface formed with an inclined surface which inclines from the lower side to the upper side. More specifically, the inclined surfaces formed on the first ratchet teeth 24A to 24D are inclined from the lower side to the upper side in the rotational direction of the rotating cam member 5 shown by the arrow A. Also, the first ratchet teeth 24A to 24D are configured to engage with any of the second ratchet teeth 54A to 54H of the rotating cam member 5.

  In the first embodiment, although the embodiment in which four first ratchet teeth are provided is adopted, the present invention is not limited thereto, and one first ratchet tooth may be provided. You may employ | adopt the form provided two or more.

  As shown in FIG. 2, FIG. 5, FIG. 6, and FIG. 9, the raising and lowering cam member 4 includes an inner cylinder 41, an outer cylinder 42, first guide portions 43C and 43D, and first cam peaks 45A to 45H. , And is configured to be vertically movable.

  The inner cylinder 41 and the outer cylinder 42 are formed such that their axial centers coincide with each other, and a shaft portion 74 of the case member 7 to be described later is inserted into the inner space of the inner cylinder 41. Further, in the cylindrical space between the outer cylinder 42 and the inner cylinder 41, the elastic member 3 is disposed. For example, a compression spring may be used as the elastic member 3.

  The outer cylinder 42 is provided with a slit hole 44 so as to extend in the axial direction. In the first embodiment, since the four slit holes 44 are provided, the outer cylinder 42 is divided into four wall portions 42A to 42D. A first guide portion 43C is provided on the outer peripheral surface of the wall portion 42C.

  The first guide portion 43C is configured to slide along a first guide groove 73C of the case member 7 described later. Similarly, a first guide portion 43D is provided on the outer peripheral surface of the wall portion 42D. The first guide portion 43D is configured to slide along the first guide groove 73D of the case member 7. Thus, the movement of the lift cam member 4 in the axial direction (vertical direction) is guided by the first guide grooves 73C and 73D, and the movement in the circumferential direction is restricted.

  Further, first cam peaks 45A to 45H are provided on the lower surface of the lift cam member 4 along the circumferential direction. The first cam peaks 45A to 45H each have a first peak 451 having a first inclined surface 451A and a second peak 452 having a second inclined surface 452B. The first inclined surface 451A abuts on a third inclined surface 553A of the rotation cam member 5 described later, and the second inclined surface 452B abuts on a fourth inclined surface 554B.

  The first inclined surface 451A of the first peak portion 451 is a slope directed downward from above as it proceeds in the rotation direction of the rotation cam member 5 indicated by the arrow A. Similarly, the second inclined surface 452B of the second peak portion 452 is an inclined surface directed upward from below as it proceeds in the rotation direction indicated by the arrow A.

  The first peak portion 451 is disposed outward of the second peak portion 452. In other words, the first inclined surface 451A is formed to be positioned more outward than the second inclined surface 452B. The first peak 451 and the second peak 452 are formed such that the tops thereof communicate in the radial direction.

  Further, an angle (inclination angle of the first inclined surface 451A) α between the first mountain 451 and the second mountain 452 formed by the first inclined surface 451A and the lower surface of the elevation cam member 4 is raised and lowered with the second inclined surface 452B. It is formed to be smaller than the angle (inclination angle of the second inclined surface 452 B) with the lower surface of the cam member 4. When the angle α between the first inclined surface 451A and the lower surface of the lift cam member 4 is reduced, the operating force at the time of pressing the operating body 2 can be reduced when operating the push switch 100. Further, when the angle α formed by the first inclined surface 451A and the lower surface of the lift cam member 4 is increased, the operating force at the time of pressing operation on the operating body 2 can be increased.

  In the first embodiment, the first peak 451 is positioned more outward than the second peak 452, but the present invention is not limited to this. For example, a form in which the first peak 451 and the second peak 452 are arranged on the same circumference may be adopted.

  As shown in FIG. 2, FIG. 7, FIG. 8 and FIG. 9, the rotating cam member 5 comprises a disc portion 51, second ratchet teeth 54A to 54H, second cam ridges 55A to 55H, and abutment portions 56A, It has 56B and is configured to be rotatable in the circumferential direction.

  The disc portion 51 is formed such that its axis coincides with the axis of the inner cylinder 41 and the wall portion 42D of the lift cam member 4. A through hole 52 is provided at the center of the disc portion 51, and the shaft portion 74 of the case member 7 is inserted through the through hole 52. Further, a cylindrical portion 57 is provided at the peripheral edge portion of the through hole 52 on the lower surface of the disk portion 51 so as to extend downward. The cylindrical portion 57 is configured to resiliently contact the upper surface of the movable contact member 6.

  The second ratchet teeth 54A to 54H are each formed to extend upward from the outer peripheral surface of the disc portion 51, and are disposed along the circumferential direction. In addition, the second ratchet teeth 54A to 54H each have an upper end surface formed with an inclined surface which inclines from the lower side to the upper side. More specifically, the inclined surfaces formed on the second ratchet teeth 54A to 54H are inclined from the bottom to the top as they move in the rotational direction of the rotating cam member 5 as indicated by the arrow A.

  The second ratchet teeth 54A to 54H are configured to engage with any of the first ratchet teeth 24A to 24D of the operation body 2. In the first embodiment, although the embodiment in which eight second ratchet teeth are provided is adopted, the present invention is not limited to this, and one second ratchet tooth may be provided. You may employ | adopt the form provided two or more.

  The second cam peaks 55 </ b> A to 55 </ b> H are provided on the upper surface of the disc portion 51 along the circumferential direction. The second cam peaks 55A to 55H each have a third peak portion 553 having a third sloped surface 553A and a fourth peak portion 554 having a fourth sloped surface 554B. The third inclined surface 553A of the third peak portion 553 is a slope directed downward from above as it proceeds in the rotation direction of the rotation cam member 5 indicated by the arrow A. Similarly, the fourth inclined surface 554B of the fourth mountain portion 554 is an inclined surface which is directed upward from below as it proceeds in the rotation direction of the rotation cam member 5 shown by the arrow A.

  The third peak 553 is disposed outward of the fourth peak 554. In other words, the third inclined surface 553A is formed to be positioned more outward than the fourth inclined surface 554B. The third peak 553 and the fourth peak 554 are formed such that the tops thereof communicate in the radial direction.

  Further, an angle (inclination angle of the third inclined surface 553A) γ between the third ridge portion 553 and the fourth ridge portion 554 and the upper surface of the disk portion 51 is equal to that of the fourth inclined surface 554B and a circle. It is formed to be smaller than an angle (inclination angle of the fourth inclined surface 554B) δ formed with the upper surface of the plate portion 51. When the angle γ formed between the third inclined surface 553A and the upper surface of the disc portion 51 is reduced, the operating force at the time of pressing the operating body 2 can be reduced when operating the push switch 100. In addition, when the angle γ formed between the third inclined surface 553A and the upper surface of the disc portion 51 is increased, the operating force at the time of pressing operation on the operating body 2 can be increased.

  In the first embodiment, the third peak portion 553 adopts the form positioned outward from the fourth peak portion 554, but the present invention is not limited to this. For example, the third peak 553 and the fourth peak 554 may be arranged on the same circumference.

  The contact portions 56A and 56B are provided in the vicinity of the outer periphery of the lower surface of the disk portion 51, and are arranged to face each other when viewed from the radial direction of the disk portion 51. Further, the contact portions 56A and 56B are inclined from the lower side to the upper side as the lower surfaces thereof move in the rotational direction of the rotation cam member 5 shown by the arrow A. Thereby, the contact portions 56A and 56B respectively contact with any one of the pressing portions 66A to 66H of the movable contact member 6 described later, and push the contact portions 63A to 63H downward to contact the contact portions 63A to 63H and It can be in contact with the fixed terminal.

  As shown in FIGS. 2 and 10, the movable contact member 6 has a pair of semicircular plate members 61A and 61B, and is formed in a coronal shape. The plate member 61A has a fan-shaped main body portion 62A and petal-like contact portions 63A to 63D. Similarly, the plate member 61B has a fan-shaped main body portion 62B and petal-like contact portions 63E to 63H.

  A fixing portion 67A for fixing the plate member 61A to the case member 7 is provided on the inner peripheral surface of the main body portion 62A. In addition, contact portions 63A to 63D are provided in parallel along the circumferential direction on the outer peripheral surface of the main body portion 62A. Similarly, a fixing portion 67B for fixing the plate member 61B to the case member 7 is provided on the inner peripheral surface of the main portion 62B. Moreover, the contact parts 63E-63H are arranged in parallel along the circumferential direction at the outer peripheral surface of the main-body part 62B.

  A substantially U-shaped notch is formed on the main surface of each of the contact portions 63A to 63H, and the rectangular remaining portion of the notch constitutes the pressing portions 66A to 66H. The proximal end portions of the pressing portions 66A to 66H are located forward in the rotational direction of the rotating cam member 5, and are inclined upward from the proximal end portion to the distal end portion. The pressing portions 66A to 66H are configured to press the contact portions 63A to 63H downward by contacting the contact portions 56A or 56B, respectively, so that the contact portions 63A to 63H contact the fixed terminals. It is done.

  In the first embodiment, the movable contact member 6 is configured of the two plate members 61A and 61B, but the present invention is not limited to this. The form which comprises movable contact member 6 with one plate member may be adopted, and the form constituted by two or more plate members may be adopted.

  In the first embodiment, although the embodiment having eight contact portions is adopted, the present invention is not limited to this, and an embodiment having one contact portion may be adopted, and an embodiment having a plurality of contact portions It may be adopted. In the case of having a plurality of contacts, for example, the number of contacts may be two, three, four, or six.

  As shown in FIGS. 2 and 11, the case member 7 is formed in a substantially rectangular parallelepiped appearance, and the upper portion thereof is open. Further, the internal space of the case member 7 is formed in a substantially cylindrical shape.

  On the inner peripheral surface of the case member 7, first guide grooves 73A to 73D extending in the vertical direction are formed. More specifically, when viewed from above, the first guide grooves 73A to 73D are formed in the vicinity of the corner of the case member 7, respectively. The first guide groove 73A and the first guide groove 73B are formed to extend from the upper surface to the bottom surface of the case member 7, and the first guide groove 73C and the first guide groove 73D are formed from the upper surface to the upper surface of the case member 7. It is formed to extend to an intermediate portion of the bottom surface.

  A shaft portion 74 is provided upright at the central portion of the bottom surface of the case member 7. The shaft portion 74 is formed in a substantially rectangular shape when viewed from above, and is formed such that one pair of side surfaces is curved in a semicircular shape, and the other pair of side surfaces is formed in a linear shape. Further, slit holes 78A and 78B are provided at a central portion of the bottom surface of the case member 7 so as to sandwich the other pair of side surfaces of the shaft portion 74 when viewed from above.

  The fixed portion 67A of the movable contact member 6 is fitted into the slit hole 78A, and the plate member 61A of the movable contact member 6 is fixed to the case member 7. Similarly, the fixed portion 67B of the movable contact member 6 is inserted into the slit hole 78B, and the plate member 61B of the movable contact member 6 is fixed to the case member 7.

  Further, common fixed terminals 77A and 77B are disposed at the center of the bottom surface of the case member 7 so as to sandwich one pair of side surfaces of the shaft portion 74. Further, fixed terminals 76A to 76F are provided in parallel along the circumferential direction at the peripheral edge portion of the bottom surface of the case member 7. The fixed terminals 76A to 76F and the common fixed terminals 77A and 77B are any connector terminals (not shown) provided at positions opposite to the connector terminals 8 to 10 and the connector terminals 8 to 10, respectively. And are electrically connected.

  The common fixed terminal 77A is always in contact with the main body 62A of the plate member 61A, and the common fixed terminal 77B is always in contact with the main body 62B of the plate member 61B, and the contact portions 63A to 63H of the movable contact member 6 are A contact structure of the switch is formed spaced apart from the fixed terminals 76A to 76F facing each other at predetermined intervals in the vertical direction.

  The fixed terminal 76A is disposed at a position facing the contact portion 63A (the pressing portion 66A) when viewed in the vertical direction, and the fixed terminal 76F is disposed at a position facing the contact portion 63G (the pressing portion 66G) It is done. Therefore, the fixed terminal is not disposed at the position facing the contact portion 63D (the pressing portion 66D), and the fixing terminal is similarly disposed at the position facing the contact portion 63H (the pressing portion 66H). Absent. Therefore, in the first embodiment, when the contact portions 56A, 56B press the pressing portions 66D, 66H and the pressing portions 66D, 66H push downward, the contact portions 63D, 63H are connectors. It is not electrically connected to any connector terminal such as the terminals 8 to 10, and the switch is in the OFF state.

  In the first embodiment, the fixed terminals 76A to 76F are arranged, but the present invention is not limited to this. One fixed terminal may be arranged, or a plurality of fixed terminals may be arranged.

  In the first embodiment, the switch is turned OFF by adopting no fixed terminal at a position facing the contact portions 63D, 66H (pressing portions 66D, 66H). It is not limited. The switch is turned off by arranging the fixed terminals at positions facing the contact portions 63D and 66H (pressing portions 66D and 66H) and not electrically connecting the fixed terminals to any connector terminals such as the connector terminals 8 to 10 and the like. The form which becomes a state of may be adopted.

[Operation and effect of push switch]
Next, the operation and effects of the push switch 100 according to the first embodiment will be described with reference to FIGS. As described above, since the fixed terminal is not disposed below the contact portion 63H (the pressing portion 66H), in FIGS. 12 to 19, the portion below the contact portion 63H (the pressing portion 66H) is for convenience. A portion corresponding to the fixed terminal is shown by a broken line.

  In the following description, the operation of the push switch 100 will be described centering on the first ratchet teeth 24A and the contact portion 56B of the operation body 2, but the first ratchet teeth such as the first ratchet teeth 24B are also the first ratchet teeth. The contact portion 56A operates in the same manner as the contact portion 56B.

  12 to 19 are explanatory views schematically showing the operation of the push switch according to the first embodiment. 12 and 19 show a state (initial state) when the operating body in the push switch is at the uppermost position, and FIG. 16 shows a state when the operating body in the push switch is at the lowermost position (intermediate state) State).

  First, as shown in FIG. 12, in a state where the operating body 2 of the push switch 100 is not operated, the operating body 2 is biased upward by the elastic force of the elastic member 3, and the first ratchet teeth 24A The upper surface of the cover abuts on the lower surface of the cover member 1.

  Further, the lift cam member 4 is biased downward by the elastic force of the elastic member 3, and the first inclined surface 451A of the first cam peak 45A and the third inclined surface 553A of the second cam peak 55A are engaged. (Abutment). The second inclined surface 452B of the first cam peak 45A is in contact with the fourth inclined surface 554B of the second cam peak 55B. That is, the valley formed between the first cam peak 45A of the lift cam member 4 and the two second cam peaks 55A and 55B of the rotary cam member 5 is engaged, and the rotary cam member 5 rotates in the circumferential direction. Is regulated.

  At this time, the top (lower end face) of the first ratchet teeth 24A in the operation body 2 and the top (upper end face) of the second ratchet teeth 54A in the rotating cam member 5 do not overlap with each other as viewed in the vertical direction. In addition, the inclined surfaces of the first ratchet teeth 24A and the inclined surfaces of the second ratchet teeth 54A are disposed so as to overlap with each other. Also, the contact portion 56B presses the pressing portion 66H, and the contact portion 63H is pushed downward. In addition, since the fixed terminal is not arrange | positioned under the contact part 63H, the switch is in the state of OFF.

  Then, it is assumed that the operator directly presses the push switch 100 in such a state or the actuator or the like (not shown) presses the head 21 of the operating body 2 downward. Then, as shown in FIG. 13, the operating body 2 moves downward, and the inclined surface of the first ratchet tooth 24A and the inclined surface of the second ratchet tooth 54A engage (abut).

  When the operation body 2 moves further downward, the second ratchet teeth 54A are viewed counterclockwise as viewed from the upper side due to the engagement between the inclined surfaces of the first ratchet teeth 24A and the second ratchet teeth 54A. In FIG. 13, it is biased to move to the right).

  Thereby, the rotation cam member 5 rotationally moves counterclockwise. At this time, since the first and second inclined surfaces 451A and 553A are in contact with each other, the first and second cam members 4 also move counterclockwise as the rotational cam member 5 rotates. It is energized. As described above, since the movement of the lift cam member 4 in the rotational direction is restricted, the lift cam member 4 can not rotate following the rotation of the rotary cam member 5.

  For this reason, as shown in FIG. 14, with the rotational movement of the rotary cam member 5, the lift cam member 4 resists the elastic force of the elastic member 3 and faces upward (opposite to the pressing direction of the operation body 2). Move to At this time, the first cam peak 45A moves upward along the third inclined surface 553A of the second cam peak 55A.

  Further, since the contact portion 56B is also rotationally moved along with the rotational movement of the rotation cam member 5, the contact portion 56B is released from contact with the pressing portion 66H.

  Then, as shown in FIG. 15, the tops of the first peak 451 and the second peak 452 of the first cam peak 45A are the tops of the third peak 553 and the fourth peak 554 of the second cam peak 55A. When the first inclined surface 451A is separated from the third inclined surface 553A, the lift cam member 4 is moved downward by the elastic force of the elastic member 3.

  As a result, the second inclined surface 452B of the first cam peak 45A and the fourth inclined surface 554B of the second cam peak 55A engage (abut) with each other. The second cam crest 55A is along the inclined surface of the second inclined surface 452B by the downward urging of the operation member 2 and the downward urging of the raising and lowering cam member 4 by the elastic member 3 Rotates counterclockwise.

  Next, as shown in FIG. 16, when the operation body 2 is pressed to the lowermost position, the inclined surface of the first ratchet tooth 24A is separated from the inclined surface of the second ratchet tooth 54A, and the first ratchet tooth 24A The side surfaces engage (abut) with the side surfaces of the second ratchet teeth 54H. Then, when the operating body 2 is pressed to the lowermost position from the initial state (intermediate state), the rotating cam member 5 rotationally moves by a first predetermined angle.

  The first predetermined angle is the number of second cams, the angle γ between the third inclined surface 553A and the upper surface of the disk portion 51, and the fourth inclined surface 554B and the upper surface of the disk portion 51. It is appropriately set by the angle δ. For example, in the first embodiment, assuming that eight second cam peaks are disposed and the second cam peaks are equally disposed on the circumference, the angle between the two second cam peaks is , 45 degrees.

  Next, as shown in FIG. 17, when the downward pressing of the operating body 2 is released, the operating body 2 is moved upward by the elastic force of the elastic member 3. At this time, the operation body 2 moves upward while the side surface of the first ratchet tooth 24A slides on the side surface of the second ratchet tooth 54H.

  The rotational movement of the rotation cam member 5 is restricted by the second ratchet teeth 54H being in contact with the first ratchet teeth 24A. Further, since the rotational movement of the rotation cam member 5 is restricted, the movement of the lift cam member 4 in the vertical direction is restricted.

  Next, as shown in FIG. 18, when the side surface of the first ratchet teeth 24A separates from the side surface of the second ratchet teeth 54H, the rotating cam member 5 becomes rotatable, and accordingly, the elevating cam member 4 also moves vertically. It becomes possible to move.

  Therefore, the lift cam member 4 is moved downward by the elastic force of the elastic member 3. Further, with the downward movement of the lift cam member 4, the rotary cam member 5 rotationally moves the second cam peak 55A counterclockwise along the second inclined surface 452B of the first cam peak 45A. Further, along with the rotational movement of the rotary cam member 5, the contact portion 56B is also rotationally moved, and the contact portion 56B is in contact with the pressing portion 66A.

  Then, as shown in FIG. 19, the operation body 2 moves upward to the original position, and the first inclined surface 451A of the first cam peak 45A engages with the fourth inclined surface 554B of the second cam peak 55H. Until it is done, the rotating cam member 5 is rotationally moved. When the first inclined surface 451A of the first cam peak 45A engages with the fourth inclined surface 554B of the second cam peak 55H, the second inclined surface 452B of the first cam peak 45A becomes the fourth of the second cam peak 55B. It engages with the inclined surface 554B. That is, the first cam peak 45A engages with the valley formed by the second cam peaks 55H and 55A. Thereby, the rotational movement of the rotating cam member 5 is restricted.

  Further, when the operating body 2 moves upward from the intermediate state to the original position, the rotating cam member 5 rotationally moves by a second predetermined angle. The second predetermined angle is an angle smaller than the first predetermined angle, and the arrangement number of the second cam ridge, the angle γ formed by the third inclined surface 553A and the upper surface of the disk portion 51, and the fourth inclination It is suitably set by the angle δ formed by the surface 554 B and the upper surface of the disk portion 51.

  Furthermore, with the rotational movement of the rotating cam member 5, the contact portion 56B presses the pressing portion 66A downward, whereby the pressing portion 66A pushes the contact portion 63A downward, and the contact portion 63A with the fixed terminal 76A. Make contact. As a result, the contact portion 63A is electrically connected to any of the connector terminals such as the connector terminals 8 to 10, and electricity is supplied to the electrical devices connected to these connector terminals, and the switch is turned on. .

  Since the push switch 100 according to the first embodiment configured as described above includes the single elastic member 3, the number of parts is smaller than that of the push switch device disclosed in the above-mentioned Patent Document 1. The structure can be reduced, the structure can be simplified, and the cost can be reduced.

  Further, in the push switch 100 according to the first embodiment, by maintaining the operating body 2 in the intermediate state, the contact portions 56A and 56B are maintained in a state not in contact with any of the pressing portions 66A to 66H. be able to.

  As a result, the switch can be turned OFF even if the contact portions 56A and 56B are not moved to the positions of the pressing portions 66D and 66H. Therefore, the usability of the operator or the like of the push switch 100 can be improved.

  Further, in the push switch 100 according to the first embodiment, the first inclined surface 451A of the lift cam member 4 is formed to have a smaller inclination angle than the second inclined surface 452B. For this reason, when the operation body 2 is pressed and operated, the first cam crest of the lift cam member 4 and the second cam crest of the rotation cam member 5 elastically contact each other up to the middle from the initial state to the intermediate state. The rotational moment required to rotate the cam member 5 in a predetermined direction can be reduced. Thereby, the operating force at the time of the pressing operation on the operating body 2 can be reduced.

  Similarly, in the push switch 100 according to the first embodiment, the third inclined surface 553A of the rotating cam member 5 is formed to have a smaller inclination angle than the fourth inclined surface 554B. For this reason, when the operation body 2 is pressed and operated, the first cam crest of the lift cam member 4 and the second cam crest of the rotation cam member 5 elastically contact each other up to the middle from the initial state to the intermediate state. The rotational moment required to rotate the cam member 5 in a predetermined direction can be reduced. Thereby, the operating force at the time of the pressing operation on the operating body 2 can be reduced.

  Further, in the push switch 100 according to the first embodiment, the second inclined surface 452B of the lift cam member 4 is formed to have a larger inclination angle than the first inclined surface 451A, so the intermediate state to the initial state The moving speed of the raising and lowering cam member 4 and the rotating cam member 5 can be increased until it returns to.

  Therefore, the speed of contact between the contact portion of the movable contact member 6 and the fixed terminal via the contact portion is increased. Thus, for example, even when a relatively large current of about 0.2 A or more flows at the time of closing contact between the contact portion of the movable contact member 6 and the fixed terminal, arcing can be made less likely to occur. Therefore, wear and damage of the contact portion and the fixed terminal can be reduced, and a push switch having stable contact and reliable switch operation can be realized.

  Similarly, in the push switch 100 according to the first embodiment, the fourth inclined surface 554B of the rotating cam member 5 is formed to have a larger inclination angle than the third inclined surface 553A. Therefore, the speed of contact or separation between the contact portion of the movable contact member 6 and the fixed terminal can be increased via the contact portion.

  Thus, even when a relatively large current of about 0.2 A or more flows when the contact portion of the movable contact member 6 and the fixed terminal are closed, arcing can be made difficult to occur. Therefore, wear and damage of the contact portion and the fixed terminal can be reduced, and a push switch having stable contact and reliable switch operation can be realized.

  Further, in the push switch 100 according to the first embodiment, the first inclined surface 451A of the lift cam member 4 is disposed on the outer peripheral side of the second inclined surface 452B. Therefore, when the height of the first cam peak is set to a predetermined constant height, the inclination angle of the first inclined surface 451A can be further reduced by arranging the first inclined surface 451A on the outer peripheral side, and By disposing the second inclined surface 452B on the inner peripheral side of the first inclined surface 451A, the inclination angle of the second inclined surface 452B can be further increased, and each can be set to a desired inclination angle. Thereby, the degree of freedom in the design of the push switch 100 can be improved.

  Similarly, in the push switch 100 according to the first embodiment, the third inclined surface 553A of the rotating cam member 5 is disposed on the outer peripheral side of the fourth inclined surface 554B. For this reason, when the height of the second cam peak is set to a predetermined constant height, the inclination angle of the third inclined surface 553A can be made smaller by arranging the third inclined surface 553A on the outer peripheral side. By arranging the fourth inclined surface 554B on the inner peripheral side of the third inclined surface 553A, the inclination angle of the fourth inclined surface 554B can be further increased, and each desired inclination angle can be set. Thereby, the degree of freedom in the design of the push switch 100 can be improved.

  Furthermore, in the push switch 100 according to the first embodiment, the movable contact member 6 having the plurality of contact portions is fixed to the case member 7 having the plurality of fixed terminals formed on the upper surface, and the contact portion of the movable contact member 6 And the fixed terminals of the case member 7 are arranged to face each other at a predetermined interval. Then, the rotary cam member 5 is rotated according to the pressing operation of the operation body 2 and the contact portion of the lower movable contact portion 6 is brought into contact with the fixed terminal according to the rotation of the rotary cam member 5 to switch the switch portion. Configured.

  Thus, for example, the movable contact member such as a brush contact is fixed to the rotating cam member, and the contact portions of the movable contact member are in elastic contact with the plurality of fixed terminals formed on the upper surface of the case. Since the frequency of current switching in one contact portion is smaller than the number of switch ON-OFF times as compared with the switch device configured to sequentially contact and separate the contact portion and the plurality of fixed terminals with rotation, operation of the switch device As a result, the open / close life of the switch unit is extended, and a highly reliable push switch can be realized.

  From the above description, many modifications and other embodiments of the present invention will be apparent to those skilled in the art. Accordingly, the above description should be taken as exemplary only, and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the present invention. The structural and / or functional details may be substantially altered without departing from the scope of the present invention. In addition, various inventions can be formed by appropriate combinations of a plurality of components disclosed in the above embodiments.

  The push switch according to the present invention is useful because the structure can be simplified and the cost can be reduced by reducing the number of parts.

DESCRIPTION OF SYMBOLS 1 cover member 1A foot 1B foot 1C bottom 1D notch 1E through hole 2 operation body 3 elastic member 4 raising and lowering cam member 5 rotation cam member 6 movable contact member 7 case member 8 connector terminal 9 connector terminal 10 connector terminal 21 head Section 22 body 22A second guide groove 23A first guide 23B first guide 24A first ratchet teeth 24B first ratchet teeth 24C first ratchet teeth 24D first ratchet teeth 41 inner cylinder 42 outer cylinder 42A wall 42A wall 42B wall Part 42C Wall part 42D Wall part 43C First guide part 43D First guide part 44 Slit hole 45A First cam mountain 45B First cam mountain 45C First cam mountain 45D First cam mountain 45E First cam mountain 45F First cam mountain 45G 1st cam mountain 45H 1st cam mountain 51 Disc part 52 through hole 54A 2nd ratchet Tooth 54B Second ratchet tooth 54C Second ratchet tooth 54D Second ratchet tooth 54E Second ratchet tooth 54F Second ratchet tooth 54G Second ratchet tooth 54H Second ratchet tooth 55A Second cam peak 55B Second cam peak 55C Second cam Mountain 55D second cam mountain 55E second cam mountain 55F second cam mountain 55G second cam mountain 55H second cam mountain 56A contact portion 56B contact portion 61A plate member 61B plate member 62A main portion 62B main portion 63A contact portion 63B Contact part 63C Contact part 63D Contact part 63F Contact part 63G Contact part 63H Contact part 66A Press part 66B Press part 66C Press part 66D Press part 66E Press part 66F Press part 66G Press part 66H Press part 66H Fixing part 67A Fixing part 67B Fixing part 71 Engaging projection 73A 1st guide groove 73B 1st guide groove 73C 1st guide groove 73D 1st guide groove 74 axial part 76A fixed terminal 76B fixed terminal 76C fixed terminal 76D fixed terminal 76E fixed terminal 76F fixed terminal 77A common fixed terminal 77B common fixed terminal 78A slit hole 78B slit hole 100 Push switch 220A circumferential surface 451 first peak 451A first slope 452 second peak 452B second slope 553 third peak 553A third slope 554 fourth peak 554B fourth slope

Claims (6)

An operating body configured to be movable in the axial direction and provided with a first ratchet tooth;
An elevation cam member configured to be movable in the axial direction and in which a first cam peak having a first inclined surface and a second inclined surface is disposed in a circumferential direction;
A rotating cam member configured to be rotatable in the circumferential direction and having a second ratchet tooth engaged with the first ratchet tooth and a second cam tooth engaged with the first cam tooth;
A movable contact member that has a contact portion, and the contact portion is configured to be brought into contact with or separated from an opposing terminal as the rotation cam member rotates;
An elastic member disposed between the operating body and the elevation cam member;
When the operating body is pressed such that the first ratchet teeth of the operating body engage with the second ratchet teeth of the rotating cam member, the rotating cam member rotates by a first predetermined angle, and the operating body The push cam is configured to rotate the rotating cam member by a second predetermined angle when the lifting cam member presses the rotating cam member by the biasing force of the elastic member when the pressing force is released. . The second cam peak has a third inclined surface in contact with the first inclined surface, and a fourth inclined surface in contact with the second inclined surface.
The elevating cam member moves in the direction opposite to the pressing direction of the operating body until the third inclined surface separates from the first inclined surface when the rotation cam member rotates the first predetermined angle. The push switch according to claim 1, wherein when the fourth inclined surface abuts on the second inclined surface, the fourth inclined surface is moved in the pressing direction of the operation body.   3. The push switch according to claim 1, wherein the elevation cam member is formed such that the first inclined surface has a smaller inclination angle than the second inclined surface.   The push switch according to any one of claims 1 to 3, wherein the raising and lowering cam member is arranged such that the first inclined surface is on the outer peripheral side than the second inclined surface. The second cam peak has a third inclined surface in contact with the first inclined surface and a fourth inclined surface in contact with the second inclined surface.
The push switch according to any one of claims 1 to 4, wherein the rotation cam member is formed such that the third inclined surface has a smaller inclination angle than the fourth inclined surface. The second cam peak has a third inclined surface in contact with the first inclined surface and a fourth inclined surface in contact with the second inclined surface.
The push switch according to any one of claims 1 to 5, wherein the rotation cam member is arranged such that the third inclined surface is outer than the fourth inclined surface.

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