JP2008152966A - Rotating body return mechanism - Google Patents

Abstract

Provided is a rotating body return mechanism capable of achieving multi-functionality of a rotary electronic component including a rotating body.
SOLUTION: First and second torsion coil springs 45 and 50 attached to a case (fixed side member) 30 and a rotary type object (rotating body) 60 rotatably installed with respect to the case 30 are provided. When the mold 60 is rotated from the neutral position, the drawing portion 47 of the first torsion coil spring 45 is pressed by the first abutting portion 64 provided on the rotary mold 60 and the coil portion 46 is twisted, so that the rotary mold A return force to the neutral position by the first torsion coil spring is generated in 60, and the rotating object 60 further rotates from this state, so that the second torsion coil spring 50 is provided at the second contact portion 67 provided in the rotating object 60. Rotating body return mechanism configured to cause the return force to the neutral position by the first and second torsion coil springs 45 and 50 to be generated in combination with the rotary mold 60 when the lead portion 52 is pressed and the coil portion 51 is twisted. Is
[Selection] Figure 3

Description

  The present invention relates to a rotating body returning mechanism suitable for returning a rotating body to a neutral position in an electronic component having a rotating body such as a rotary electronic component.

For rotating electronic parts that are configured so that the electrical output changes with the rotation of the rotating body, the rotating knob attached to the rotating body is rotated to automatically return to the original neutral position when the hand is released. Some have a body recovery mechanism. The rotating body return mechanism includes a torsion coil spring attached to the fixed side member, a rotating body rotatably attached to the fixed side member, and a rotary knob attached to the rotating body. An abutting portion that abuts on a drawn portion drawn from the coil portion of the torsion coil spring is provided. In this rotating body return mechanism, when the rotating body rotates from its neutral position by the rotation of the rotary knob, the pulling portion of the torsion coil spring is pressed at the contact portion of the rotating body and the coil portion is twisted, thereby rotating the rotating body. A return force (rotation return force) to the neutral position is generated in the body by the elastic force of the torsion coil spring.
Japanese Patent Laid-Open No. 2003-197407

  By the way, in order to cope with diversification and sophistication of functions of electronic devices in recent years, even in the rotating body return mechanism as described above, the rotational force generated in the rotating body according to the rotation angle of the rotating body is stepwise. It is required to make the electronic component provided with the rotating body multifunctional by being configured to change.

  The present invention has been made in view of the above-described points, and an object of the present invention is to be able to change the rotational force generated in the rotating body in a stepwise manner in accordance with the rotation angle of the rotating body. An object of the present invention is to provide a rotating body return mechanism capable of achieving multi-functionality of an electronic component having a body.

  In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is a fixed-side member, a coil portion attached to the fixed-side member and wound in a coil shape, and drawn out from an end portion of the coil portion. The first and second torsion coil springs having a lead-out portion, and the first torsion coil spring are rotatably installed with respect to the fixed-side member and abut on the lead-out portion of the first torsion coil spring in a neutral position. A rotating body comprising a first abutting portion and a second abutting portion that abuts against a drawing portion of the second torsion coil spring in a state rotated by a predetermined angle from the neutral position, By rotating from the neutral position, the drawing portion of the first torsion coil spring is pressed by the first abutting portion and the coil portion is twisted, and the rotating body is neutralized by the elastic force of the first torsion coil spring. The return force to the position is generated At the same time, when the rotating body further rotates from that state, the drawn-out portion of the second torsion coil spring is pressed by the second abutting portion and the coil portion is twisted, and the first torsion coil spring is connected to the rotating body. The rotating body returning mechanism is characterized in that the returning force to the neutral position by the elastic force of the second torsion coil spring is generated.

  According to a second aspect of the present invention, in the rotating body return mechanism according to the first aspect, the coil portion of the first torsion coil spring is disposed at a rotation center portion of the rotating body, and a pair of the first torsion coil spring is provided from the coil portion. Of the first torsion coil spring in a state where the first abutting portion is a pair and the rotating body is in a neutral position. The second torsion coil spring is disposed at a position in contact with each of the pair of lead portions, and the coil portion is disposed outside the rotating body, and the pair of lead portions from the coil portion faces the rotating body. And the second contact portion is disposed between the pair of lead portions of the second torsion coil spring.

  The invention according to claim 3 of the present application is the rotating body return mechanism according to claim 2, wherein the second torsion coil spring has a pair of coil portions, and each of the lead portions is provided from each of the pair of coil portions. It is characterized by protruding.

  According to a fourth aspect of the present invention, in the rotating body return mechanism according to any one of the first to third aspects, the rotating body includes a rotating knob and a sliding contact pattern formed on the circuit board. A sliding element that is in sliding contact is attached.

  According to the invention described in claim 1 of the present application, the rotational force generated when the rotating body rotates can be changed stepwise according to the rotation angle of the rotating body. By providing the electronic component with the electronic component, it is possible to give the electronic component more functions than in the past, and a rotating body return mechanism that can achieve multi-functionality of the electronic component.

  According to invention of Claim 2 of this application, the coil part of the 2nd torsion coil spring is superimposed on the coil part of the 1st coil spring by having installed the coil part of the 2nd torsion coil spring in the outside of a rotation type thing. The thickness of the rotating body return mechanism can be reduced compared to the case where the rotating body is installed.

  According to the invention described in claim 3 of the present application, since the second torsion coil spring includes the pair of coil portions, the pair of lead portions of the second torsion coil spring is provided with the second contact in the neutral position. It can be easily arranged at a position away from the part by a predetermined distance.

  According to the invention described in claim 4 of the present application, when the slider attached to the rotating body by the rotating operation of the rotary knob makes sliding contact with the sliding contact pattern, the rotational force generated in the rotating body is determined as the rotational angle of the rotating body. Thus, it is possible to provide a rotary electronic component that can be changed stepwise according to the above.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view of a rotary electronic component with a pushbutton switch (hereinafter referred to as “rotary electronic component”) 1 having a rotating body return mechanism according to an embodiment of the present invention. As shown in the figure, the rotary electronic component 1 includes a rotary knob 10, a push button knob 20, a fixed side member (hereinafter referred to as “case”) 30, a first torsion coil spring 45, and a second torsion coil spring 50. And a pressing member 55, a rotating body (hereinafter referred to as “rotating type”) 60, a slider 70, a flexible circuit board 80, and an attachment member 90. Each component will be described below.

  The rotary knob 10 is a molded product made of synthetic resin, and includes a main body portion 11 formed in a substantially circular ring shape, and the center of the main body portion 11 is a circular opening 12. The opening 12 has an inner diameter dimension slightly larger than the outer diameter dimension of the operation section 21 and is formed on the outer peripheral side surface of the operation section 21 so that the operation section 21 of the pushbutton knob 20 described below can be installed therein. In order to prevent the flange portion 23 from coming out upward, the inner diameter dimension is slightly smaller than the outer diameter dimension of the flange portion 23. On the other hand, a cylindrical protruding portion 13 that protrudes downward is formed on the outer periphery of the lower surface of the main body portion 11, and a protruding operation portion 14 that is rotated by a finger or the like is formed on a part of the outer surface of the protruding portion 13. Is formed. Further, at a plurality of positions (three positions in the figure) between the protrusion 13 and the opening 12 on the lower surface of the main body 11, a small protrusion-shaped connecting portion that connects and fixes the rotary knob 10 to the rotary mold 60. 15 is provided.

  The push button knob 20 is a molded product made of synthetic resin, and includes a circular operation unit 21 and a pressing unit 22 extending downward from the center of the lower surface of the operation unit 21, and the upper surface of the operation unit 21 is a finger or the like. An operating surface 21a for pressing operation is formed, and a flange portion 23 is formed on the outer peripheral side surface of the operating portion 21 so as to protrude outward. The pressing portion 22 is composed of an axial portion whose cross-sectional shape is formed in a substantially T shape.

  FIG. 2 is a perspective view of the case 30 as viewed from the lower surface side, showing the case 30, first and second torsion coil springs 45, 50 attached to the lower surface thereof, and a pressing member 55. As shown in FIG. 1 and FIG. 1, the case 30 has a shape integrally including a main body portion 31 formed in a substantially rectangular flat plate shape and a substantially circular knob installation portion 32 provided at one end of the main body portion 31. This is a molded product made of synthetic resin. 1 and 2, only a part of the main body 31 of the case 30 is illustrated. Edges 33 projecting downward are formed on the outer periphery of the lower surface of the case 30, and small portions for fixing attachment members 90 to be described below are fixed to a plurality of locations (three locations in the drawing) at the lower ends of the edges 33. A protruding fixing portion 34 is provided. Further, the knob installation portion 32 is a place where the rotary knob 10 and the push button knob 20 are installed, and the upper portion thereof is formed in a circular projection shape as shown in FIG. 1, and as shown in FIG. A circular recess 35 is formed in the lower part. A cylindrical shaft portion 36 projects from the center of the upper surface, and a pressing portion insertion portion including a substantially T-shaped through hole through which the pressing portion 22 of the push button knob 20 is inserted. 37 is provided. In addition, a plurality (three in the drawing) of connecting portion insertion portions 38 are provided on the same circumference outside the shaft portion 36 in the knob installation portion 32.

  On the other hand, as shown in FIG. 2, the shaft portion 36 also protrudes at the center in the recess 35 on the lower surface of the knob installation portion 32. The shaft portion 36 is a portion to which the coil portion 46 described below of the first torsion coil spring 45 is attached. The shaft portion 36 includes a substantially cylindrical protrusion that can be inserted into the coil portion 46, and a pressing portion insertion portion 37 is disposed therein. ing. In addition, a small protrusion-shaped coil portion locking portion 40 that protrudes outward is provided at a position spaced apart from the lower surface of the knob installation portion 32 on the side surface of the shaft portion 36 facing away from the main body portion 31. On the other hand, between the shaft portion 36 and the connecting portion insertion portion 38 on the lower surface of the knob installation portion 32, a pair of protruding lead portion locking portions 41, 41 are formed. Both drawer | drawing-out part latching | locking parts 41 and 41 are arrange | positioned on the opposite side (main body part 31 side) with respect to the center which provided the coil part latching | locking part 40 with respect to the center of the axial part 36, and the axial part 36 is the position. Are arranged symmetrically on both sides with respect to a straight line passing through the center of the case 30 in the longitudinal direction of the case 30, and both of them are presser portions 41 a and 41 a installed at positions spaced apart from the side surface of the shaft portion 36 by a predetermined distance. The contact portions 41b and 41b projecting from the end portions of 41a and 41a are integrally provided. Both presser portions 41a are formed as substantially arc-shaped protrusions along the side surface of the shaft portion 36, and a side surface of the first torsion coil spring 45 attached to the shaft portion 36 has a side surface facing the shaft portion 36 described below. It can be pressed against this. The both contact portions 41b protrude from a pair of opposed end portions (end portions on the main body portion 31 side) of the presser portions 41a and extend away from the shaft portion 36. Both inner side surfaces of 41 b are arranged in a substantially C shape so that the distance between both sides increases as the distance from the shaft portion 36 increases, and both side surfaces abut against both the following lead portions 47 of the first torsion coil spring 45. To lock it.

  On the other hand, a pair of attachment portions 42, 42 for attaching a pair of coil portions 51, 51 described below of the second torsion coil spring 50 are projected from the lower surface of the main body portion 31 of the case 30. Both attachment portions 42 have the same shape, and are integrally provided with a columnar base portion 42a inserted into the coil portion 51 and a small protrusion-like fixing portion 42b protruding from the lower end of the base portion 42a. Further, on the side of the attachment portion 42, 42 on the lower surface of the main body 31 on the side of the knob installation portion 32, a protrusion that comes into contact with and locks a pair of drawer portions 52, 52 described below of the second torsion coil spring 50. A shaped locking portion 43 is formed. The locking portion 43 includes a pair of contact surfaces 43a and 43a formed in a substantially C shape in which the distance between the surfaces gradually decreases from the vicinity of the mounting portions 42 and 42 toward the knob installation portion 32. Yes.

  The first torsion coil spring 45 is a member composed of a metal wire having elasticity, a coil portion 46 formed by winding the wire in a coil shape for a little less than two turns, and from both ends of the coil portion 46 to the outside in the radial direction. It is configured to include two linearly drawn portions 47, 47 that are drawn in a substantially C shape.

  The second torsion coil spring 50 is a member composed of a metal wire having elasticity, and a pair of coil portions 51, 51 formed by winding the wire in a coil shape for a little less than two turns are arranged at a predetermined interval. One end portions drawn out from 51 are connected in a straight line, and the other end portions drawn out from the coil portions 51 and 51 are outside of each coil portion 51 in the radial direction and are identical to each other. It is the linear drawer part 52,52 pulled out toward the side. The lead-out portions 52 and 52 are arranged in a substantially C shape in which the distance between the lead portions 52 and 52 is gradually reduced as the distance from the coil portions 51 increases. The pressing member 55 is a flat plate member formed in a shape covering the coil portions 51, 51 of the second torsion coil spring 50, and corresponds to the fixing portions 42 b, 42 b of the attachment portions 42, 42 of the case 30. Mounting fixing portions 56, 56 each having a through hole through which the fixing portions 42b, 42b are inserted are formed at positions.

  The rotary mold 60 is a synthetic resin molded product formed in a substantially circular flat plate shape, and has a circular opening 61 through which the shaft portion 36 of the case 30 is inserted. Further, on the outer periphery of the opening 61, a notch 62 is formed by cutting out a part of the outer periphery in a substantially fan shape. Further, a concave portion 63 is formed on the upper surface of the outer side in the radial direction of the notch 62, and the upper surface is recessed in a substantially fan shape, and a pair of small protrusions are formed on both sides in the circumferential direction in the concave portion 63. First contact portions 64, 64 are formed. The first abutting portions 64 and 64 abut against the outer sides of the lead portions 47 and 47 of the first torsion coil spring 45 and press the same. Further, at a position corresponding to the connecting portion 15 of the rotary knob 10 outside the opening portion 61, an attachment fixing portion 65 including a through-hole to which the connecting portion 15 is inserted and attached is provided. On the other hand, a tongue-like protruding portion 66 that protrudes outward is formed on the outer peripheral side surface on the radially outer side with respect to the concave portion 63. A protruding second abutting portion 67 is formed on the upper surface of the protruding portion 66, and a small protruding fixing portion (not shown) for fixing the slider 70 is formed on the lower surface. Yes. The second abutment portion 67 abuts against both inner sides of the lead-out portions 52 and 52 of the second torsion coil spring 50 and presses them.

  The slider 70 is made of an elastic metal plate having conductivity, and projects two sliding booklets 72 from one end of a flat base 71, bends them to the lower surface side of the base 71, and lowers to the tip thereof. The slidable contact 73 is formed so as to be convex toward the surface. In addition, the base 71 is formed with an attachment fixing portion 74 formed of a through hole.

  The flexible circuit board 80 is a thin plate member made of a synthetic resin film having flexibility having an outer shape substantially matching the outer shape of the edge portion 33 of the case 30, and is fixed at a position corresponding to the fixing portion 34 of the case 30. An attachment fixing portion 81 including a through hole that passes through the portion 34 is provided. Further, on the upper surface of the flexible circuit board 80, a switch 82 pressed by the pressing portion 22 of the push button knob 20 and a sliding contact pattern 85 on which the slider 70 slides are formed. The switch 82 includes a switch pattern (not shown) formed by printing a conductive paste on the flexible circuit board 80, and a reversing plate 83 formed by forming an elastic metal plate attached on the switch pattern into a dome shape. The slidable contact pattern 85 includes a single arc-shaped common pattern 86 formed by printing a conductive paste on the flexible circuit board 80, and the same circumference inside the common pattern 86. The contact patterns 87a and 87b are divided into a plurality of parts. The contact pattern 87a is composed of a pair of contact patterns arranged at inner positions on the circumference, and the contact pattern 87b is composed of a pair of contact patterns arranged at both outer positions of the pair of contact patterns 87a.

  The attachment member 90 is a hard flat plate made of metal or synthetic resin having an outer shape substantially the same as the outer shape of the edge portion 33 of the case 30, and the fixing portion 34 is inserted at a position corresponding to the fixing portion 34 of the case 30. Thus, an attachment fixing portion 91 including a through hole to be attached is provided.

  Next, a procedure for assembling the rotary electronic component 1 will be described. First, the first torsion coil spring 45 and the second torsion coil spring 50 are attached to the lower surface of the case 30. Here, to attach the first torsion coil spring 45, the shaft portion 36 of the case 30 is inserted into the coil portion 46 of the first torsion coil spring 45, and the coil portion 46 is locked to the lower surface of the knob installation portion 32 and the coil portion. While being installed between the parts 40, the outsides of the drawer parts 47 and 47 are brought into contact with the insides of the contact parts 41b and 41b of the drawer part locking parts 41 and 41, respectively. Further, in order to attach the second torsion coil spring 50, the attachment portions 42, 42 of the case 30 are inserted into the coil portions 51, 51 of the second torsion coil spring 50, and the insides of the lead portions 52, 52 are respectively engaged with the locking portions. The contact surfaces 43a and 43a of 43 are contacted and locked. Further, the holding member 55 is disposed on the lower surface side of the second torsion coil spring 50, and the fixing portions 42b and 42b protruding below the coil portions 51 and 51 are inserted into the mounting fixing portions 56 and 56, respectively. The second torsion coil spring 50 is attached by being pressed from the lower surface side thereof with the pressing member 55 by fixing the distal ends of the fixing portions 42b, 42b protruding to the lower surface side of 55 by heat caulking.

  Subsequently, the slider 70 is attached to the rotary mold 60. For this purpose, the fixing portion on the lower surface of the protruding portion 66 of the rotary mold 60 is inserted into the mounting fixing portion 74 of the slider 70, and the tip of the fixing portion protruding to the lower surface side of the base portion 71 of the slider 70 is heat caulked. To do. Then, the rotary mold 60 is disposed in the recess 35 of the knob installation portion 32 of the case 30. At that time, the shaft portion 36 of the case 30 is disposed in the opening 61 of the rotary mold 60, the drawing-out portion locking portions 41, 41 are disposed in the notch 62, and the opening 61 and the notch 62 are disposed inside. A first torsion coil spring 45 is installed. In addition, the lead portions 47 and 47 of the first torsion coil spring 45 are disposed inside the first contact portions 64 and 64 of the rotary mold 60, and both the outer sides of the lead portions 47 and 47 are the first contact portions 64 and 64. A second abutting portion 67 of the rotary mold 60 that abuts on both inner sides of the 64 and is disposed outside the concave portion 35 is disposed between the drawing portions 52 and 52 of the second torsion coil spring 50.

  On the other hand, the operation part 21 of the push button knob 20 is inserted into the opening 12 of the rotary knob 10 from below, and the rotary knob 10 and the push button knob 20 are installed above the knob installation part 32 of the case 30. To do. At that time, the pressing portion 22 of the push button knob 20 is inserted into the pressing portion insertion portion 37 of the case 30 so that the tip of the pressing portion 22 protrudes below the knob setting portion 32 and the connecting portion 15 of the rotary knob 10 is moved. The tip of the connecting portion 15 is protruded below the knob installation portion 32 by being inserted into the connecting portion insertion portion 38 of the case 30. Then, if the tip of the protruding connecting portion 15 is inserted into the mounting fixing portion 65 of the rotary mold 60 and the tip of the connecting portion 15 protruding to the lower surface side of the rotary die 60 is fixed by heat caulking, the rotary knob 10 is fixed. And the rotary mold 60 are fixed to the upper and lower sides of the case 30 so as to be integrally rotatable.

  Subsequently, the one on which the flexible circuit board 80 is placed on the attachment member 90 is attached to the lower side of the case 30. At that time, the fixing portion 34 of the case 30 is inserted into the mounting fixing portion 81 of the flexible circuit board 80 and the mounting fixing portion 91 of the mounting member 90, and the tip of the fixing portion 34 protruding to the lower surface side of the mounting member 90 is heated. Crimp and fix. As a result, the sliding contact 73 of the slider 70 contacts the sliding contact pattern 85 of the flexible circuit board 80, and the tip of the pressing portion 22 of the push button knob 20 contacts the reversing plate 83 of the switch 82. Thus, the assembly of the rotary electronic component 1 is completed.

  FIG. 3 is a plan view of the assembled rotary electronic component 1 as viewed from the lower surface side. In the figure, the flexible circuit board 80, the attachment member 90, and the pressing member 55 are not shown. Moreover, in the same figure, the state which the rotary type | mold object 60 exists in the neutral position is shown. Here, the neutral position refers to a position where the rotary knob 10 and the rotary mold 60 remain stationary without rotating in any direction when the hand is released from the rotary knob 10. As shown in the figure, the rotary electronic component 1 includes a case 30, first and second torsion coil springs 45 and 50 attached to the case 30, and a rotation that is rotatably installed with respect to the case 30. A rotating body return mechanism configured with a mold (rotating body) 60 is provided. The coil portion 46 of the first torsion coil spring 45 is disposed at the center of rotation of the rotary object 60, and a pair of lead-out portions 47 and 47 extend outward from the coil portion 46 in the radial direction. It is arranged to protrude. The rotary object 60 is provided with a pair of first abutting portions 64 and 64 that abut on the outer sides of the drawn portions 47 and 47 of the first torsion coil spring 45 in a state where the rotary object 60 is in the neutral position. The case 30 is provided with a pair of lead portion locking portions 41 and 41 that are in contact with the outside of the lead portions 47 and 47 of the first torsion coil spring 45. Further, the second torsion coil spring 50 includes a pair of coil portions 51 and 51 arranged on the outer side (radially outward) of the rotary type member 60 and a rotary type member from each of the pair of coil portions 51 and 51. A pair of lead-out portions 52, 52 arranged so as to project toward 60 is provided. The rotary mold 60 has a predetermined distance from the lead portions 52, 52 between the pair of lead portions 52, 52 of the second torsion coil spring 50 in a state where the rotary die 60 is in the neutral position. A second abutting portion 67 is provided at a position to be.

  Here, the function of the rotary electronic component 1 as a push button switch will be described. By pressing the operation surface 21a of the push button knob 20 shown in FIG. 1, the reversing plate 83 of the switch 82 is pressed by the pressing portion 22. And the switch pattern below is turned on, and the switch 82 is turned on. On the other hand, when the pressing on the operation surface 21a is released, the pressing portion 22 of the push button knob 20 is lifted by the restoring force of the reversing plate 83, and the switch 82 is turned off.

  Next, in this rotary electronic component 1, the operation of the rotary mold 60 and the first and second torsion coil springs 45 and 50 when the rotary knob 10 is rotated will be described. FIG. 4 is a diagram for explaining this operation. First, as shown in FIG. 5A, when the rotary knob 10 and the rotary mold 60 are in the neutral position, the drawer portion locking parts 41 and 41 of the case 30 and the first contact part of the rotary mold 60 64 and 64 are in contact with both outer sides of the lead portions 47 and 47 of the first torsion coil spring 45, and the second contact portion 67 is separated from the lead portions 52 and 52 of the second torsion coil spring 50. It is arranged at an intermediate position. In this state, when the rotary knob 10 is rotated in one direction by operating the operation part 14 of the rotary knob 10, the first torsion coil spring 45 that is in contact with the first contact part 64 by the one first contact part 64. One of the drawer portions 47 is pressed and moves inward. Thereby, the coil part 46 is twisted by narrowing the space | interval of the drawer | drawing-out parts 47 and 47, and the reset force to the neutral position by the elastic force of the 1st torsion coil spring 45 arises in the rotary type thing 60. Hereinafter, this state is referred to as a first stage. If the rotational force applied to the rotary knob 10 is released in this first stage, the rotary knob 10 automatically returns to the original neutral position.

  On the other hand, when the rotary knob 10 is further rotated in the same direction against the elastic force of the first torsion coil spring 45 in the first stage, the rotary object 60 becomes neutral as shown in FIG. At a position rotated by a predetermined angle from the position, the second contact portion 67 contacts the inside of the one extraction portion 52 of the second torsion coil spring 50. When the rotary knob 10 is further rotated in the same direction from there, as shown in FIG. 5C, the drawing portion 52 is pressed by the second abutting portion 67 and moved outward, whereby the coil portion 51 is screwed. Thus, a return force to the neutral position is generated in the rotary mold 60 by the elastic force of the second torsion coil spring 50. Hereinafter, this state is referred to as a second stage. In the second stage, the return force to the neutral position due to the elastic force of the first torsion coil spring 45 and the second torsion coil spring 50 is generated in the rotary mold 60 together. Even in the second stage, if the rotational force applied to the rotary knob 10 is released, the rotary knob 10 automatically returns to the original neutral position. In addition, the rotational force necessary to rotate the rotary knob 10 is abruptly increased at the position where the second contact portion 67 contacts the drawing portion 52 of the second torsion coil spring 50. Therefore, at the end point position of the first stage. The rotation of the rotary knob 10 and the rotary mold 60 is stopped once, and then the rotary knob 10 can be rotated with a stronger force to shift to the second stage.

  Here, the relationship between the rotation operation of the rotary knob 10 and the rotary mold 60 and the sliding operation of the slider 70 to the sliding contact pattern 85 will be described. When the rotary mold 60 is in the neutral position, The sliding contact 73 of the slider 70 shown in FIG. 1 is between the inner contact patterns 87a and 87a, and the sliding contact pattern 85 is not conductive. Then, at the position where the rotary mold 60 is in the first stage, the sliding contact 73 is brought into contact with the inner contact pattern 87a and the sliding pattern 85 is conducted, and at the position where the rotary mold 60 is in the second stage, The sliding contact 73 contacts the outer contact pattern 87b, and the sliding contact pattern 85 is conducted. Therefore, when the rotary object 60 shifts from the neutral position to the first stage and when it shifts from the first stage to the second stage, the contact state between the slider 70 and the sliding contact pattern 85 changes. It is like that.

  As described above, in the rotary electronic component 1, when the rotary knob 10 and the rotary mold 60 are rotated, the return force to the neutral position applied to the rotary mold 60 is increased at a predetermined position during the rotation. The rotational force required to rotate the rotary knob 10 increases. Further, the contact state between the slider 70 and the sliding contact pattern 85 changes corresponding to the change in the rotational force caused by the rotation of the rotary knob 10. Accordingly, the operational feeling of the rotary knob 10 changes as the electrical output of the sliding contact pattern 85 changes. As a result, the rotary electronic component 1 can be provided with a function as a multi-stage switch (in this embodiment, a two-stage switch) in which the operation sensation and the electrical output are switched stepwise by the rotation of the rotary knob 10. The multifunction of the rotary electronic component 1 can be achieved.

  In addition, according to the rotating body return mechanism provided in the rotary electronic component 1, the second torsion coil spring 50 is configured to include the pair of coil portions 51 and 51, thereby reducing the size of the second torsion coil spring 50. Even in the drawing, the pair of lead portions 52, 52 can be easily disposed at a position separated from the second contact portion 67 in the neutral position by a predetermined distance. In addition, since the pair of coil parts 51, 51 of the second torsion coil spring 50 are installed outside the rotary mold 60, only one coil part is provided on the second torsion coil spring 50, and the coil part is subjected to the first torsion. As compared with the case where the rotating body return mechanism is installed so as to be superimposed on the coil portion 46 of the coil spring 45, the thickness of the rotating body return mechanism can be reduced. Therefore, a mechanism in which the return force to the neutral position generated in the rotary mold 60 changes stepwise according to the rotation angle of the rotary mold 60 can be realized in a compact manner with a simple configuration.

  Further, in the rotary electronic component 1 of the present embodiment, the push button knob 20 is installed in the center of the rotary mold 60 and the switch 82 is disposed at a position facing the push button knob 20. A space for arranging the sliding contact pattern 85 cannot be secured at a position facing the center. Therefore, the sliding contact pattern 85 is arranged at a position facing the outside of the rotary object 60. In addition, a protrusion 66 protruding outward from the outer peripheral side surface of the rotary mold 60 is provided, and a slider 70 is attached to the lower surface of the protrusion 66. In the rotary electronic component 1, a protrusion 66 that protrudes outside the rotary object 60 is provided for the reasons described above. The second contact portion 67 is provided on the upper surface of the rotary electronic component 1 by using the protrusion 66. Is provided. As a result, the second contact portion 67 is disposed at the outer position of the rotary mold 60, so that the second contact section 67 is disposed so as to protrude from the outside of the rotary mold 60 toward the rotary mold 60. The second torsion coil spring 50 is configured to be able to easily abut against and press the pair of lead-out portions 52, 52.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, in the above embodiment, an example in which the rotating body return mechanism of the present invention is applied to a rotary electronic component has been described. However, the application of the present invention is not limited to this, and the rotating body is automatically set to a neutral position using a torsion coil spring. Any device can be applied as long as the device has a rotating body returning mechanism that automatically returns. In addition to the rotary electronic component with a push button switch as in the above embodiment, the rotary electronic component to which the rotating body return mechanism is applied includes only the rotary electronic component mechanism by omitting the push button switch mechanism. It may also be a rotating electronic component.

  In addition, the configuration of the first and second torsion coil springs 45 and 50 included in the rotating body return mechanism of the above embodiment is an example, and the first and second torsion coil springs included in the rotating body return mechanism of the present invention include a coil portion and the The specific number and shape of the coil portions and the lead portions are not limited to those shown in the above embodiment as long as they have a lead portion drawn from the coil portion. In particular, the second torsion coil spring 50 provided in the rotating body return mechanism of the above embodiment has a configuration including a pair of coil portions 51, 51. As the second torsion coil spring provided in the rotating body return mechanism of the present invention, In addition to this, a configuration including only one coil portion may be used. Moreover, when providing a pair of coil part in a 2nd torsion coil spring, in addition to connecting one edge part of each coil part 51 like this embodiment, the edge parts pulled out from each coil part are connected. It is also possible to provide each coil part separately without connecting.

It is a disassembled perspective view of the rotary electronic component with a pushbutton switch provided with the rotary body return mechanism concerning one Embodiment of this invention. It is the perspective view which looked at the case from the lower surface side, and is a figure which shows the case, the 1st, 2nd torsion coil spring attached to the lower surface, and the pressing member. It is the top view which looked at the assembled rotary electronic component with a pushbutton switch from the lower surface side. It is a figure for demonstrating operation | movement of the rotary type | mold at the time of rotating operation of a rotary knob, and a 1st, 2nd torsion coil spring.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotary electronic component with a pushbutton switch 10 Rotation knob 20 Pushbutton knob 30 Case (fixed side member)
31 Main body portion 32 Knob installation portion 36 Shaft portion 40 Coil portion locking portion 41 Drawer portion locking portion 42 Mounting portion 43 Locking portion 45 First torsion coil spring 46 Coil portion 47 Lead portion 50 Second torsion coil spring 51 Coil portion 52 Drawer Portion 55 Holding member 60 Rotating type (rotating body)
64 1st contact part 67 2nd contact part 70 Slider 80 Flexible circuit board (circuit board)
82 Switch 85 Sliding contact pattern 90 Mounting member

Claims (4)

A fixed side member;
First and second torsion coil springs attached to the fixed-side member and having a coil part in which a wire is wound in a coil shape and a lead-out part drawn out from an end of the coil part;
A first abutting portion that is rotatably installed with respect to the fixed side member and that is in a neutral position and abuts on a lead portion of the first torsion coil spring, and is rotated by a predetermined angle from the neutral position. A rotating body comprising a second abutting portion that abuts on the drawn portion of the second torsion coil spring,
When the rotating body rotates from the neutral position, the lead portion of the first torsion coil spring is pressed by the first abutting portion and the coil portion is twisted, and the elastic body of the first torsion coil spring is pressed against the rotating body. A return force to the neutral position is generated by the generated force,
When the rotating body further rotates from this state, the lead portion of the second torsion coil spring is pressed by the second contact portion and the coil portion is twisted, and the first torsion coil spring and the second torsion member are rotated. A rotator return mechanism characterized in that a return force to a neutral position by the elastic force of a torsion coil spring is generated. The rotating body return mechanism according to claim 1,
The first torsion coil spring has a coil portion disposed at a rotation center portion of the rotating body, and a pair of lead portions projecting outward in the radial direction of the coil portion from the coil portion. The first abutting portions are a pair, and are disposed at positions that respectively abut against the pair of lead portions of the first torsion coil spring in a state where the rotating body is in a neutral position.
The second torsion coil spring has a coil portion disposed outside the rotating body, a pair of lead portions projecting from the coil portion toward the rotating body, and the second contact portion. Is arranged between a pair of lead portions of the second torsion coil spring. In the rotating body return mechanism according to claim 2,
2. The rotating body return mechanism according to claim 1, wherein the second torsion coil spring has a pair of coil portions, and each of the lead portions protrudes from each of the pair of coil portions. The rotating body return mechanism according to any one of claims 1 to 3,
A rotating body return mechanism, wherein a rotating knob and a slider that is in sliding contact with a sliding pattern formed on a circuit board are attached to the rotating body.

Images