JP4522363B2 - Rotating electronic components - Google Patents

Description

  The present invention relates to a rotary electronic component that changes its electrical output by rotating a knob.

  In a conventional rotary electronic component, a rotating body is rotatably installed on the surface of the base on which the flexible circuit board is installed, on which the flexible circuit board is installed, and a slider attached to the rotating body is installed on the flexible circuit board. There has been a structure in which the electrical output is changed by sliding contact with a sliding contact pattern formed on a circuit board (see, for example, Patent Document 1). Further, a knob that is operated by a human finger or the like is separately attached to the outer periphery of the rotating body.

However, the conventional rotary electronic component has the following problems.
(1) The attachment of the knob to the rotating body has been performed by press-fitting one protrusion protruding from the upper outer periphery of the rotating body into the hole provided in the knob. There is a risk that the rotating body may be easily detached from the rotating body, or that the rotating body may rattle when the knob is operated. The above problem is particularly noticeable when the rotary electronic component is downsized.

(2) In order to limit the rotation range of the rotating body to a predetermined range (angle), a rotation range limiting mechanism may be provided between the base and the rotating body to prevent the rotating body from rotating more than a predetermined angle. For example, as shown in Patent Document 1, this rotation range limiting mechanism is provided in a groove provided on a facing surface facing a base (flexible circuit board) of a rotating body with a protrusion protruding from the surface on which the flexible circuit board of the base is installed. It is inserted, and it is comprised so that a rotary body can rotate in the range which a protrusion moves in the said groove | channel. However, if the rotating electronic component is downsized, the thickness of the rotating body is reduced, the depth of the groove is reduced, and the depth of engagement with the protrusion is shortened, which may reduce the strength of the rotation range limiting mechanism. there were.
Japanese Patent Application Laid-Open No. 2005-19844

  The present invention has been made in view of the above points, and the object thereof is to ensure that the knob can be securely attached to the rotating body even if the size is reduced, and that the rotation range of the rotating body does not occur at the same time. It is an object of the present invention to provide a rotary electronic component that can be configured with a simple and strong strength mechanism for limiting the above.

  The invention according to claim 1 of the present application includes a base, a rotating body that is rotatably installed with respect to the base, a knob that is installed on the outer periphery of the rotating body and rotates integrally with the rotating body, An electrical function unit that is installed between the rotating body and the base and changes its electrical output with the rotation of the rotating body, and between the outer periphery of the rotating body and the knob on the base And a pair of locking portions for locking the rotating body and the knob between the rotating body and the knob on both sides of the stopper shaft. A rotation characterized in that a stopper abutting portion that abuts against the stopper shaft is formed in the stopping portion, and the rotation range of the rotating body is limited to a range in which the pair of locking portions move across the stopper shaft. There are in electronic parts.

  According to a second aspect of the present invention, there is provided the rotary electronic component according to the first aspect, wherein an automatic return mechanism having a resilient means for automatically returning the rotary body to a predetermined position is provided.

  In the invention according to claim 3 of the present application, a pressing member is installed on the back side of the surface of the rotating body facing the base, and the pressing member and the base are integrated by attaching the pressing member to the stopper shaft. The rotary electronic component according to claim 1, wherein the rotary electronic component is provided.

  According to a fourth aspect of the present invention, the resilient means is housed in a resilient means housing portion provided on a surface of the rotating body on the side where the retaining member is installed, and is covered by the retaining member. The rotary electronic component according to claim 3.

  According to the first aspect of the present invention, since the pair of locking portions for locking between the rotating body and the knob are provided at positions on both sides of the stopper shaft provided on the base, between the rotating body and the knob. Can be locked at two places, and the knob can be securely attached to the rotating body to prevent rattling. At the same time, the rotation range of the rotating body is limited by using the pair of locking portions as stopper contact portions and contacting the stopper shaft with these stopper contact portions, so the rotation range of the rotating body can be easily achieved with a simple structure. The limiting mechanism can be configured, and the rotation range limiting mechanism can be configured by using the outer peripheral side surface of the rotating body and the space outside in the radial direction. The strength can be easily kept strong by making the shaft easily large.

  According to invention of Claim 2, a rotary body can be automatically returned to a predetermined position.

  According to the third aspect of the present invention, since the stopper shaft is also used as the pressing member mounting means, the pressing member can be easily and reliably integrated with the base with a simple structure. If the pressing member and the base are integrated, it is possible to reliably hold the rotating body installed between them.

  According to the fourth aspect of the present invention, the bullet means stored in the bullet means storage section provided on the rotating body can be easily covered with the pressing member.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side sectional view of a rotary electronic component 1 to which the present invention is applied, and FIG. 2 is an exploded perspective view of the rotary electronic component 1. As shown in both figures, the rotary electronic component 1 includes a base 30 to which a circuit board (hereinafter referred to as “flexible circuit board” in this embodiment) 10 is attached, and a rotation that is rotatably installed on the base 30. A body 60, a resilient means (hereinafter referred to as “coil spring”) 90 that is built in the rotator 60 and automatically returns the rotator 60 to a predetermined position (neutral position), and the back surface of the surface of the rotator 60 that faces the base 30. A holding member 100 which is installed on the side and prevents the coil spring 90 from being removed from the rotating body 60 and the spring means housing portion 69 of the rotating body 60, and a circuit board (hereinafter referred to as “second flexible circuit board” in this embodiment). The mounting base 120 on which 140 is mounted, the fixing member 150 that attaches the base 30 to the mounting base 120, and the rotating body 60 installed on the outer periphery upper part (the upper part of the outer periphery in the radial direction) of the rotating body 60 A knob 200 which rotates the body, and is configured by including the. Each component will be described below.

  FIG. 3 is a perspective view showing the base 30 to which the flexible circuit board 10 is attached. As shown in the figure, the flexible circuit board 10 is configured by providing a functional pattern portion 11 and a terminal pattern portion 13. An arc-shaped sliding contact pattern 15 is provided on the surface of the functional pattern portion 11, a terminal pattern 17 is provided on the terminal pattern portion 13, and the sliding contact pattern 15 and the terminal pattern 17 are connected by a connection pattern 19. . The sliding contact pattern 15 may be a switch pattern, a resistor pattern, or a pattern having functions other than those. On both sides of the terminal pattern portion 13, there are provided concave engaging portions 21 for engaging the attachment pieces 153 of the fixing member 150 described below. A circular through hole 23 through which a rotation shaft 61 of the rotating body 60 described below passes is provided in the center of the functional pattern portion 11 (rotational center axis portion of the rotating body 60).

  The base 30 extends in a direction (backward) away from the rotating body 60 by bending the electronic component mounting portion 31 into a substantially L shape by bending the molded resin into a substantially semi-disc shape. The press contact connection portion 35 is integrally formed. The electronic component attachment portion 31 is formed so as to surround the periphery and the back surface of the functional pattern portion 11 of the flexible circuit board 10. A stopper shaft 39 and elastic means abutting portions 37 and 41 projecting in a bar shape toward the holding member 100 side through the outer periphery of the rotating body 60 described below, respectively, at the upper center and lower ends of the electronic component mounting portion 31 are provided. Is provided. At the tips of the stopper shaft 39 and the respective resilient means abutting portions 37 and 41, there are provided small projection-like fixing portions 43 for fixing the pressing member 100 described below by thermal caulking. The upper surfaces of the resilient means abutting portions 37 and 41 are drawn-out portion abutting surfaces 37a and 41a for abutting a drawn-out portion 93 drawn out from a coil spring 90 described below toward the outside in the radial direction. Further, the left and right side surfaces of the stopper shaft 39 provided in the upper center of the electronic component mounting portion 31 are stopper contact surfaces 39a that contact a stopper contact portion 79 of the rotating body 60 described below. Further, at the position where the through hole 23 of the flexible circuit board 10 is provided in the center of the electronic component mounting portion 31, the inner diameter dimension of the through hole 23 is the same as the inner diameter dimension, and the rotary shaft 61 of the rotating body 60 described below can be rotated freely. A circular through-hole 45 that pivots is provided. On the other hand, the press-connecting portion 35 has a flat plate shape, and concave attachment piece insertion portions 47 for engaging attachment pieces 153 of the fixing member 150 described below are provided on both sides thereof.

  The rotating body 60 is a substantially disc-shaped synthetic resin molded product. A pair of rotating shafts 61 and 63 protrude from the center of both surfaces, and one surface (surface on the base 30 side) is a slider mounting surface 65. On the other side, a bullet means storing portion 69 is provided. Attachment portions 67 that are engaged with a pair of engaging portions 215 of the knob 200 described below are provided on the front end surfaces of the rotary shafts 61 and 63, respectively. The mounting portion 67 is a flat projection extending vertically from the tip surfaces of the rotary shafts 61 and 63, and the flat tip end surface is a tapered surface that spreads outward in the direction away from the knob 200. 68. That is, the attachment portion 67 is formed in a vertically long shape in a direction in which it snap-engages with an engagement portion 215 described below. The bullet means storing portion 69 is formed by a ring-shaped recess surrounding the periphery of the rotating shaft 63, and a pair of notch-like lead portion insertion portions 71 are provided outward in the radial direction. The lower surfaces of the pair of leading portion insertion portions 71 are contact portions 73, respectively. As shown in FIG. 1, a small protrusion-like fixing portion 75 that is inserted into an attachment portion 87 of a slider 85 described below is provided on the slider attachment surface 65.

  Next, two protrusions 81 are continuously provided in the circumferential direction at positions equidistant from the upper center of the outer peripheral surface of the rotating body 60 to provide recesses between the protrusions 81, and these protrusions 81. A locking portion 83 is configured by the recess and the recess. Each of the protrusions 81 is formed in a claw shape that becomes narrower toward the tip, whereby the concave portion constituting the locking portion 83 is formed in a shape whose width increases outward. An insertion portion 77 is provided on the outer peripheral surface of the rotating body 60 between the pair of locking portions 83, 83 so that the outer peripheral surface portion is recessed in a concave shape and the stopper shaft 39 of the base 30 is inserted. Both inner side surfaces of the protrusion 81 of the locking portion 83 located on both sides of the portion 77 are used as stopper contact portions 79.

  The slider 85 shown in FIG. 1 is formed by forming an elastic metal plate in a substantially ring shape, and is provided with mounting portions 87 formed of holes at two upper and lower portions, and a sliding contact portion 89 at a predetermined position. Provided. A coil spring (a torsion coil spring is used in this embodiment) 90 shown in FIG. 2 is configured by pulling out a lead-out portion 93 from both ends of a coil portion 91 in which a wire is wound in a coil shape. The coil spring 90 is wound so that the inner diameter of the coil portion 91 is reduced by moving both the lead-out portions 93 in the upward direction so as to be narrowed.

  The holding member 100 is a substantially semi-circular plate-shaped resin, and is formed to have an outer dimension that closes the elastic means housing portion 69 of the rotating body 60, and the rotation shaft 63 of the rotating body 60 is at the center thereof. An insertion portion 101 is provided that is formed of a circular through-hole that is inserted while being pivotally supported, and an attachment portion 103 that protrudes in the form of a tongue from the lower end of the outer periphery and the upper center toward the outside in the radial direction. Each mounting portion 103 is provided with an insertion fixing portion 105 into which the fixing portion 43 provided on the base 30 is inserted.

  The knob 200 is a molded product of a synthetic resin, has a semi-cylindrical shape, a knob main body 201 located above the base 30 and the rotating body 60, and the base 30 and the rotation from both sides of the knob main body 201. A pair of knob support portions 211 facing the body 60 (covering both side portions of the knob main body portion 201) are provided. A long operation portion 203 extending in the longitudinal direction (in the direction of the rotation axis of the knob 200) protrudes from the center of the upper surface of the knob main body portion 201, and its lower surface (on the side facing the outer peripheral surface of the rotating body 60). The surface) is provided with a pair of locking portions 205 that respectively engage with the recesses of the pair of locking portions 83 provided on the rotating body 60. The locking portion 205 is formed by a single protrusion that protrudes in a substantially triangular shape, and is formed to have a size that fits exactly into the recess of the locking portion 83 provided in the rotating body 60. In other words, both the locking portions 83 and 205 are disposed between the outer peripheral surface of the rotating body 60 and the surface of the knob 200 facing the outer peripheral surface with respect to the force in the rotational direction of the rotating body 60 and the knob 200. More specifically, it is formed in a concavo-convex shape that engages with each other when they are integrated so as to cover the knob 200 from above the rotating body 60. On the other hand, the knob support portion 211 has a flat plate shape (substantially semicircular disk shape), closes both side surfaces of the semi-cylindrical knob main body portion 201, and is provided with an attachment portion 213 that protrudes in the form of a tongue from the center of the lower side thereof An engaging portion 215 comprising a rectangular through-hole extending in a strip shape (straight line) in the longitudinal direction is provided at the center upper portion of the mounting portion 213, and downward on the lower portions of the inner surfaces facing each other of the pair of mounting portions 213. Thus, a tapered surface 217 is provided so that the distance between both surfaces is increased. By providing the tongue-like attachment portion 213 on the knob support portion 211 in this way, the knob support portion 211 has a predetermined elasticity in a direction perpendicular to the surface thereof (flexible). At the same time, by providing the engaging portion 215 in the knob support portion 211, a pair of engaging portions of the knob 200 is attached to an attachment portion 67 provided at the ends of the pair of rotating shafts 61 and 63 of the rotating body 60. The knob 215 is snap-engaged by bending the knob support portion 211 so that the knob 200 and the rotating body 60 are integrated.

  The fixing member 150 is made of a metal plate, and has a rectangular holding portion 151 that substantially covers the upper surface of the press contact connection portion 35 of the base 30 and two protruding from both sides of the holding portion 151 and bent downward. A tongue-shaped attachment piece 153 is provided. Each attachment piece 153 is formed at a position facing each attachment piece insertion portion 47 of the press contact connection portion 35.

  The second flexible circuit board 140 is provided with three terminal patterns 141 on a flexible synthetic resin film, and the drawing patterns 143 drawn from the terminal patterns 141 are led out to the drawing portions 145 of the second flexible circuit board 140. is doing. Two concave engaging portions 147 are provided on one side of the distal end side of the second flexible circuit board 140, and two through holes are provided in a portion on the side where the lead portion 145 is pulled out rather than a portion where each terminal pattern 141 is formed. An engaging portion 147 made of is provided.

  The mounting base 120 is formed by molding a synthetic resin into a substantially rectangular shape, and the front side thereof is an electronic component placement portion 121 and the rear side is a substrate pressure contact portion 123. A rectangular and concave storage portion 125 is provided substantially at the center of the substrate pressure contact portion 123, and two concave engagement portions 127 are provided on both sides of the substrate pressure contact portion 123. Further, the resilient means 130 housed in the housing part 125 is made of an elastic metal plate, and the three resilient pieces 133 protrude from one side in the longitudinal direction of the substantially rectangular base 131 and bend upward. An elastic portion 135 protruding upward is formed at each tip.

  Next, a method for assembling the rotary electronic component 1 will be described. First, the slider 85 is brought into contact with the slider mounting surface 65 of the rotating body 60 in advance, and a fixing portion 75 (see FIG. 1) provided on the rotating body 60 at that time. ) Is inserted into a mounting portion 87 (see FIG. 1) provided on the slider 85, and its tip is fixed by heat caulking. Next, the rotating body 60 is installed on the surface of the functional pattern portion 11 of the flexible circuit board 10 attached to the base 30, and at this time, one of the rotating bodies 60 is inserted into the through holes 23 and 45 of the flexible circuit board 10 and the base 30. The rotary shaft 61 is inserted in a freely rotatable manner. Next, the coil portion 91 of the coil spring 90 is accommodated in the elastic means housing portion 69 of the rotating body 60, and the drawing portions 93 at both ends are inserted into the drawing portion insertion portions 71 of the rotating body 60, respectively. (At this time, the leading end of the lead-out portion 93 protrudes outward from the lead-out portion insertion portion 71 and is in elastic contact with the lead-out portion abutting surfaces 37a and 41a of the base 30), and above (rotating body 60). The holding member 100 is placed and covered on the surface provided with the elastic means housing portion 69), the rotating shaft 63 of the rotating body 60 is inserted into the insertion portion 101 of the holding member 100, and is pivotally supported. At the same time, the fixing portions 43 of the base 30 are inserted into the insertion fixing portions 105 of the presser member 100, and the tips thereof are fixed by heat caulking. Accordingly, the rotation shafts 61 and 63 of the rotating body 60 are pivotally supported by the base 30 and the pressing member 100 on both sides of the rotating body 60, respectively. Further, by attaching the pressing member 100, the rotating body 60 does not come off from the base 30, and the coil spring 90 does not come out from the elastic means housing portion 69 of the rotating body 60. It is to be noted that the elastic member housing portion 69, the drawing portion insertion portion 71 and the contact portion 73 formed on the rotating body 60, the elastic member contact portions 37 and 41 formed on the base 30, the coil spring 90, and the holding member 100 are used. An automatic return mechanism is configured. At this time, the sliding contact portion 89 of the slider 85 is in contact with the sliding contact pattern 15 of the functional pattern portion 11. Then, by installing the knob 200 on the base 30 and the rotating body 60, the mounting portions 67 of the pair of rotating shafts 61 and 63 of the rotating body 60 are attached to the pair of engaging portions 215 provided on the knob 200. By locking, the knob 200 and the rotating body 60 are integrated. When the knob 200 is attached to the rotating body 60, the tapered surface 68 of the attachment portion 67 abuts against the tapered surface 217 of the knob 200 shown in FIG. 1, and the both knob support portions 211 (particularly, the attachment portion 213) of the knob 200 spread. Thus, both the attachment portions 67 are easily engaged with both engagement portions 215 by so-called snap-in engagement, and the knob 200 is integrally fixed to the rotating body 60. At the same time, the pair of locking portions 205 provided on the knob 200 engage with the recesses of the pair of locking portions 83 provided on the rotating body 60, and both are locked (fixed) against the force in the rotational direction. (See FIG. 4). Since the attachment portion 67 and the engagement portion 215 are vertically long, both are firmly engaged in the rotational direction, and at the same time, since the attachment portion 67 and the engagement portion 215 are vertically long, the length of the tapered surface 68 Accordingly, the inclination angle of the tapered surface 68 can be relaxed, and the snap-in engagement can be performed more easily and smoothly.

  Next, after storing the resilient means 130 in the storage part 125 of the mounting base 120, the second flexible circuit board 140 with the terminal pattern 141 facing upward is placed thereon. Next, the terminal pattern portion 13 of the flexible circuit board 10 attached to the base 30 is bent to the lower surface side of the press contact connection portion 35 of the base 30 as shown in FIG. 2 and placed on the second flexible circuit board 140. To do. Then, the pressing portion 151 of the fixing member 150 is placed on the upper surface of the press contact connection portion 35, and at this time, the attachment piece 153 of the fixing member 150 is engaged with the attachment piece insertion portion 47 of the press contact connection portion 35 and the engagement portion of the terminal pattern portion 13. 21 and the engaging portion 147 of the second flexible circuit board 140 and the engaging portion 127 of the mounting base 120, and the tip of the mounting piece 153 is bent to the back surface of the mounting base 120, whereby the base 30 is mounted on the mounting base. At the same time as fixing to 120, each terminal pattern 141 of the second flexible circuit board 140 and each terminal pattern 17 of the flexible circuit board 10 placed on the mounting base 120 are connected to the bottom surface of the press-connecting portion 35 and the elastic force of the elastic means 130. A pressure connection is made with the emitting portion 135.

  FIG. 4 is an operation explanatory view of the rotary electronic component 1 assembled as described above (however, the description of the holding member 100, the mounting base 120, etc. is omitted). When the rotating body 60 is in the neutral position, the both drawing portions 93 of the coil spring 90 are in elastic contact with the contact portion 73 of the rotating body 60 and the drawing portion contact surfaces 37a and 41a of the base 30. The center of the stopper shaft 39 is positioned at a position that is approximately half the angle formed by the two stopper contact portions 79 in the neutral state.

  For example, if the knob 200 is rotated in the direction of arrow A shown in FIG. 4, the rotating body 60 and the entire knob 200 are rotated in the direction of arrow A, and the sliding contact portion 89 of the slider 85 is the sliding pattern of the flexible circuit board 10. 15 slides on and changes its output. At that time, the left drawing portion 93 of the coil spring 90 is held in its original position, and the right drawing portion 93 is pushed up by the contact portion 73. When the rotation of the knob 200 is released, the rotating body 60 automatically returns to the original state shown in FIG. The rotation angle of the rotating body 60 is limited by the stopper contact surface 39a of the base 60 coming into contact with the stopper contact portion 79 of the rotating body 60 regardless of whether the rotation angle is rotated to the left or right.

  As described above, the rotary electronic component 1 engages the pair of engaging portions 215 provided on the knob 200 with the mounting portions 67 provided on the pair of rotating shafts 61 and 63 protruding from both surfaces of the rotating body 60. In addition to integrating the knob 200 and the rotating body 60, a pair of locking portions 83 for locking the rotating body 60 and the knob 200 at positions on both sides of the stopper shaft 39 provided on the base 30 are provided. 205, in addition to the engagement by the mounting portion 67 and the engaging portion 215, the rotary body 60 and the knob 200 can be locked at two locations, and the knob 200 can be more securely attached to the rotary body 60. And can prevent rattling. At the same time, the pair of locking portions 83, 83 provided on the rotating body 60 is also used as the stopper abutting portions 79, 79, and the stopper shaft 39 is brought into contact with the stopper abutting portions 79, 79, thereby rotating the rotating range of the rotating body 60. Therefore, the rotation range limiting mechanism of the rotating body 60 can be easily configured with a simple structure, and the rotation range limiting mechanism can be configured using the outer circumferential side surface of the rotating body 60 and the space outside in the radial direction. Even if the rotary electronic component 1 is reduced in size, only the locking portions 83 and 205 and the stopper shaft 39 can be relatively enlarged easily, and the strength can be easily maintained. Further, since the stopper shaft 39 is also used as an attachment means for the pressing member 100, the pressing member 100 can be integrated with the base 30 easily and reliably with a simple structure. If the pressing member 100 and the base 30 are integrated, the holding of the rotating body 60 installed between them will be ensured. In addition, the coil spring 90 which is the bullet means stored in the bullet means storage portion 69 provided in the rotating body 60 can be easily covered with the pressing member 100.

  FIG. 5 is a side sectional view of another rotary electronic component 1-2 to which the present invention is applied, and FIG. 6 is an exploded perspective view of the rotary electronic component 1-2. In the rotary electronic component 1-2 shown in the figure, the same or corresponding parts as those of the rotary electronic component 1 according to the embodiment shown in FIGS. Note that matters other than those described below are the same as those in the embodiment shown in FIGS.

  The only difference between the rotary electronic component 1-2 and the rotary electronic component 1 is the structure of the rotating body 60 and the knob 200. That is, the rotating body 60 according to this embodiment has a short length of the pair of rotating shafts 61 and 63 and does not provide the attachment portions 67 at both ends provided in the above-described embodiment, but merely the base 30 and the flexible circuit board 10. Only the pivots are pivotally supported on the through-holes 23 and 45 and the insertion part 101 of the pressing member 100, and the engaging part 83 provided on the rotating body 60 is recessed between the two protrusions 81 as in the above embodiment. 1 is provided so that the stopper shaft 39 is located on both sides of the stopper shaft 39, and a locking hole 82 (only one in FIG. A pair of locking portions 83, 83 is configured by providing the (shown). On the other hand, the knob 200 has a shorter length in the rotation axis direction of the knob 200 than that of the above embodiment, and at the same time, the knob support portion 211, the mounting portion 213, and the engaging portion 215 are all omitted, and the one locking portion 205 is projected. A claw 206 is provided at the front end of the rotating body 60 so as to be locked (snap-in engagement) in a locking hole 82 provided in the locking portion 83 of the rotating body 60 to attach (fix) the rotating body 60 and the knob 200 together. It is configured.

  And as for the assembly of this rotary electronic component 1-2, after assembling the base 30, the rotary body 60, the coil spring 90, and the holding member 100, the base 30 and the upper part of the rotary body 60 are assembled. By installing the knob 200 so as to cover it, the pair of locking portions 205 of the knob 200 are locked to the locking holes 82 provided in the pair of locking portions 83 of the rotating body 60 by snap-in engagement. Thus, the knob 200 and the rotating body 60 are integrated. That is, in this embodiment, the knob 200 and the rotating body 60 are integrated only by engaging the pair of locking portions 205 and 83. Therefore, the fixing structure between the two is simplified and the size can be reduced. The mounting procedure of the mounting base 120, the resilient means 130, the second flexible circuit board 140, and the fixing member 150 is the same as that in the above embodiment.

  Even if comprised in this way, the rotary body 60 can be rotated integrally with the knob 200 similarly to the said embodiment, and when the rotary body 60 exists in a neutral position, both the drawer | drawing-out parts 93 of the coil spring 90 rotate. The center of the stopper shaft 39 is located at a position of about half the angle formed by the two stopper contact portions 79 elastically contacting the contact portion 73 of the body 60 and the drawing portion contact surfaces 37a and 41a of the base 30. For example, when the knob 200 is rotated, the rotary body 60 and the entire knob 200 are rotated, and the sliding contact portion 89 of the slider 85 slides on the sliding contact pattern 15 of the flexible circuit board 10 to change its output. . When the rotation of the knob 200 is released, the rotating body 60 automatically returns to the original state by the elastic return force of the coil spring 90. Also in this embodiment, the rotation angle of the rotating body 60 is limited by the stopper contact surface 39a of the stopper shaft 39 coming into contact with the stopper contact portion 79 of the rotating body 60. Further, the rotary electronic component 1-2 is provided with a pair of locking portions 83 and 205 for locking between the rotary body 60 and the knob 200 at positions on both sides of the stopper shaft 39. The gap between the knobs 200 can be locked at two locations, and the knob 200 can be securely attached to the rotating body 60, and rattling can be prevented. At the same time, the pair of locking portions 83, 83 provided on the rotating body 60 is also used as the stopper abutting portions 79, 79, and the stopper shaft 39 is brought into contact with the stopper abutting portions 79, 79, thereby rotating the rotating range of the rotating body 60. Therefore, the rotation range limiting mechanism of the rotating body 60 can be easily configured with a simple structure, and the strength can be easily kept strong. Further, since the stopper shaft 39 is also used as an attachment means for the pressing member 100, the pressing member 100 can be integrated with the base 30 easily and reliably with a simple structure. If the pressing member 100 and the base 30 are integrated, the holding of the rotating body 60 installed between them will be ensured. In addition, the coil spring 90 which is the bullet means stored in the bullet means storage portion 69 provided in the rotating body 60 can be easily covered with the pressing member 100.

  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. It should be noted that any shape, structure, and material not directly described in the specification and drawings are 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 embodiment shown in FIGS. 1 to 4, the locking member 83 is formed on the knob 200 at the same time as the locking member 83 is formed by the protrusion 81 and the concave portion on the rotating body 60, and the embodiment shown in FIGS. Then, the engaging part 83 is formed on the rotary body 60 by the protrusion 81 and the engaging hole 82 and at the same time the engaging part 205 having the claw 206 is formed on the knob 200. However, in any case, the engaging part 205 is formed on the rotating body 60. The structure of the locking part 83 may be formed on the knob 200 side, and the structure of the locking part 205 formed on the knob 200 may be formed on the rotating body 60 side. Further, the shape / structure / attachment structure of the pair of locking portions 83, 205 is not limited to the shape / structure of each of the embodiments described above, and for example, the two may be attached with an adhesive. There may be a mounting structure in which a protrusion protruding from a member is inserted into a hole provided in the other member and the tip of the protrusion is heat caulked, or a separate engagement pin may be attached to integrate the two together. Can be modified. The stopper abutting portion 79 may be provided on the locking portion 205 side instead of being provided on the locking portion 83. In short, a pair of locking portions 83 and 205 for locking between the rotary body 60 and the knob 200 are provided at positions on both sides of the stopper shaft 39, and the stopper shaft 39 is further provided on the locking portions 83 and 205. Any structure can be used as long as a stopper abutting portion 79 is formed to abut on the rotating body 60 so that the rotation range of the rotating body 60 is limited to a range in which the pair of locking portions 83 and 205 move with the stopper shaft 39 interposed therebetween. It may be. In the above embodiment, the electrical function unit is configured by the sliding contact pattern 15 provided on the flexible circuit board 10 and the slider 85 that is in sliding contact with the pattern. However, the electrical function unit may have various other configurations. . In short, any configuration may be adopted as long as it is installed between the rotating body 60 and the base 30 and its electrical output changes as the rotating body 60 rotates. Further, as long as it is an automatic return mechanism having an elastic means for automatically returning the rotating body 60 to a predetermined position, an automatic return mechanism using an elastic means of various structures other than the coil spring 90 may be used. In the above-described embodiment, the automatic return position of the rotating body 60 is set so that the stopper shaft 39 is located in the middle of the stopper abutting portion 79 located on the left and right sides thereof. The position in contact with the stopper contact portion 79 may be set as the automatic return position. Note that the second flexible circuit board 140, the mounting base 120, the resilient means 130, and the fixing member 150 used in the above embodiment are not necessarily required and may be omitted.

1 is a side sectional view of a rotary electronic component 1. FIG. 1 is an exploded perspective view of a rotary electronic component 1. FIG. It is a perspective view which shows the base 30 to which the flexible circuit board 10 was attached. FIG. 6 is an operation explanatory view of the rotary electronic component 1. It is a sectional side view of the rotary electronic component 1-2. It is a disassembled perspective view of the rotary electronic component 1-2.

Explanation of symbols

1,1-2 Rotating electronic component 10 Flexible circuit board (circuit board)
15 Sliding contact pattern (electrical function part)
30 Base 37, 41 Bounce means contact part (automatic return mechanism)
39 Stopper shaft 60 Rotating body 61, 63 Rotating shaft 69 Bounce means storage part (automatic return mechanism)
79 Stopper contact part 81 Protrusion 82 Locking hole 83 Locking part 85 Slider (electrical function part)
90 Coil spring (bounce means, automatic return mechanism)
100 Holding member 120 Mounting base 140 Second flexible circuit board (circuit board)
150 Fixing member 200 Knob 201 Knob body 205 Locking part 206 Claw 211 Knob support part 215 Engagement part

Claims (4)

The base,
A rotating body that is rotatably mounted on the base;
A knob installed on the outer periphery of the rotating body and rotating integrally with the rotating body;
An electrical function unit that is installed between the rotating body and the base and changes its electrical output as the rotating body rotates,
While providing a stopper shaft located between the outer periphery of the rotating body and the knob on the base,
The rotating body and the knob are provided with a pair of locking portions for locking between the rotating body and the knob at positions on both sides of the stopper shaft, and these locking portions are in contact with the stopper shaft. A rotary electronic component characterized in that a stopper abutting portion is formed to limit a rotation range of the rotating body to a range in which the pair of locking portions move with the stopper shaft interposed therebetween.   2. The rotary electronic component according to claim 1, further comprising an automatic return mechanism having a resilient means for automatically returning the rotary body to a predetermined position. A pressing member is installed on the back side of the surface of the rotating body facing the base,
3. The rotary electronic component according to claim 1, wherein the pressing member and the base are integrated by attaching the pressing member to the stopper shaft.   The said bulleting means is accommodated in the bulleting means accommodating part provided in the surface at the side which installs the said pressing member of the said rotary body, and is covered with the said pressing member. Rotary electronic component.

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