JP6351424B2 - Electronic components - Google Patents

Description

  The present invention relates to an electronic component that changes a detection output by moving a moving body to which a slider is attached in an arc shape.

  Conventionally, slide-type electronic components have been used as operation means for adjusting, for example, the aperture, zoom, and focus of a single-lens reflex camera. In this type of electronic component, for example, as shown in FIG. 16 of Patent Document 1, the flexible circuit board (40) is accommodated in a cavity (C) that is curved in an arc shape of the molds (10) and (30). Then, by filling the molding resin from the lower surface side of the flexible circuit board (40) in the cavity (C), a base board (1-2) as shown in FIG. A movable body (130) with a slider (150) attached is attached to the side of the attached board (1-2) where the flexible circuit board (40) is exposed.

  The moving body (130) of the electronic component (100) can be slid in an arc shape by engaging the rail engaging portion (131) with the rail portion (61) of the base (60). As a result, the slider (150) slides on the sliding contact patterns (43) and (45) formed on the flexible circuit board (40) to change the detection output. This type of slide-type electronic component (100) is attached to, for example, an outer cylinder of a telephoto zoom lens of a single-lens reflex camera, and is used for adjusting a diaphragm, zoom, focus, and the like as described above.

JP 2011-135005 A

However, the substrate with base (1-2) used for the conventional electronic component (100) has the following problems.
(1) As shown in FIG. 16, the manufacturing method of the electronic component (100) includes molds (10) and (30) on the outer peripheral surface side and the inner peripheral surface side of the arc forming the cavity (C). Since the flexible circuit board (40) is disposed and the flexible circuit board (40) is placed between the outer sides of the cavities C of the molds (10) and (30), The range of the arc is limited to 180 ° or less, and it has been difficult to manufacture a substrate with a base having an arc of 180 ° or more. Therefore, in the substrate with base (1-2), the moving range of the moving body (130) (that is, the slider (150)) is limited to 180 ° or less. For these reasons, there has been a demand for an electronic component with a simple structure that can move a moving body (slider) within a moving range of 180 ° or more.

(2) In the case of the electronic component (100), the moving body (130) is configured to move on the outer peripheral surface side of the base-equipped substrate (1-2) formed in an arc shape. However, depending on the structure of the electronic device incorporating this type of electronic component, the electrical output can be changed by moving the movable body installed on the inner peripheral surface side of the base-equipped substrate along the inner peripheral surface. An electronic component having a simple structure and easy to assemble has been desired.

  The present invention has been made in view of the above-described points, and an object of the present invention is to allow the moving body to move on the inner peripheral surface side of the flexible circuit board installed in an arc shape, and to move the moving body (sliding). It is an object of the present invention to provide an electronic component with a simple structure and easy assembly that allows the sliding range of the child to be easily 180 ° or more.

An electronic component according to the present invention includes a base having an arcuate board mounting surface on an inner peripheral surface, a flexible circuit board attached to the board mounting surface of the base, and an inner peripheral surface of the flexible circuit board. A movable body that moves along the sliding body, and a slider that is attached to the movable body and that slides on a sliding contact pattern provided on the inner peripheral surface of the flexible circuit board, and in the circumferential direction of the base A first rail portion is provided on one end side along which the locking portion provided on one end side of the movable body is slidably locked, and the other end along the circumferential direction of the base is further provided. A cover formed by forming a second rail portion for slidably locking a locking portion provided on the other end side of the movable body is attached to the side.
ADVANTAGE OF THE INVENTION According to this invention, the electronic component of the structure to which a mobile body moves the inner peripheral surface side of the flexible circuit board installed in circular arc shape can be comprised easily. Since the movable body is disposed on the inner peripheral surface side of the flexible circuit board, the outer diameter of the electronic component can be reduced as compared with the structure in which the movable body is disposed on the outer peripheral surface side of the flexible circuit board. Further, according to the present invention, only one of the pair of first and second rail portions necessary for locking the locking portions provided on both ends of the movable body is used as a base. Since it is provided on one end side of the base and the other second rail part is provided on a cover which is a separate member, it is possible to easily manufacture a base having a substrate mounting surface made of an arc of 180 ° or more. (If the first and second rail portions projecting from the board mounting surface toward the center of the arc are integrally formed on both ends of the base, and the base is formed in an arc shape. If the arc exceeds 180 °, the molding becomes difficult on the mold). Thereby, the moving range of the moving body (sliding range of the slider) can be easily set to 180 ° or more. This electronic component has a simple structure and can be easily assembled.

Further, in the present invention, the base is formed in a substantially cylindrical shape, and the inner peripheral surface thereof is the substrate mounting surface, and one end side of the base is on the inner peripheral surface of the base. A first rail forming portion projecting toward the central direction is provided, while the cover has a central direction with respect to the inner peripheral surface of the base when the cover is attached to the other end of the base. A second rail forming portion that protrudes toward the center is provided, and the first and second rail portions are formed on the first and second rail forming portions, respectively.
As a result, the moving body (slider) can be rotated approximately 360 ° (further 360 ° or more). In addition, since the first and second rail forming portions projecting toward the central direction with respect to the inner peripheral surface of the base are formed on each of the base and the cover, the base formed in a substantially cylindrical shape, Both covers can be easily manufactured. In addition, the first and second rail forming portions are provided so as to protrude toward the central direction with respect to the inner peripheral surface of the base, and the first and second rail forming portions are formed on the first and second rail forming portions. The entire movable body can be positioned radially inward of the inner peripheral side exposed surface of the flexible circuit board, and the movable body rotates approximately 360 ° to the flexible circuit board (particularly, the portion of the lead-out portion to the outside of the flexible circuit board). ) Can easily be avoided.

According to the present invention, an engaging portion provided on one end of the flexible circuit board is engaged with an engaged portion provided on the first rail forming portion, whereby the flexible circuit board is attached to the base. It is characterized by being attached to the board mounting surface.
If comprised in this way, a flexible circuit board can be easily attached to the board | substrate mounting surface of a base.

Further, the present invention is characterized in that one end side of the flexible circuit board is insert-molded so as to be embedded in the base, thereby attaching the flexible circuit board to the board mounting surface of the base. .
If comprised in this way, one end side of a flexible circuit board can be embedded and fixed in a base easily and reliably by insert molding, and a flexible circuit board is attached to the board mounting surface of a base. Can do.

Further, the present invention is characterized in that the locking portion of the moving body is formed by a protrusion inserted into the first and second rail portions before and after the moving direction of the outer periphery of the moving body.
Since the movable body is provided with four locking portions on the front, rear, left, and right sides of the movable body and engages with the first and second rail portions at these four locations, the first and second rail portions are arcuate, for example. Even if it is curved, the circular movement of the moving body can be smoothly guided.

  According to this invention, it can be set as the structure which a mobile body moves on the internal peripheral surface side of the flexible circuit board installed in circular arc shape. As a result, the electronic component can be miniaturized. Further, according to the present invention, the moving range of the moving body (sliding range of the slider) can be easily set to 180 ° or more. The electronic component according to the present invention has a simple structure and is easy to assemble.

It is a perspective view of the electronic component 1-1. It is the perspective view which looked at the electronic component 1-1 from the lower side. It is a disassembled perspective view of the electronic component 1-1. It is the disassembled perspective view which looked at the electronic component 1-1 from the lower side. It is an AA partial cross-section enlarged view of FIG. It is a BB partial cross-section enlarged view of FIG. FIG. 7A is an enlarged view of the moving body 110, FIG. 7A is a perspective view seen from above, FIG. 7B is a perspective view seen from below, and FIG. 7C is a side view. It is a perspective view of the electronic component 1-2. It is the perspective view which looked at the electronic component 1-2 from the lower side. It is a perspective view of flexible circuit board 50-2. It is CC partial cross-section enlarged view of FIG. It is DD partial sectional enlarged view of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a perspective view of the electronic component 1-1 according to the first embodiment of the present invention, FIG. 2 is a perspective view of the electronic component 1-1 as viewed from below, and FIG. 3 is an exploded perspective view of the electronic component 1-1. 4 is an exploded perspective view of the electronic component 1-1 as viewed from below, FIG. 5 is an enlarged partial cross-sectional view along AA in FIG. 1, and FIG. 6 is an enlarged partial cross-sectional view along BB in FIG. As shown in these drawings, the electronic component 1-1 includes a base 10, a flexible circuit board 50, a cover 80, a moving body 110, and a slider 130. In the following description, “upper” refers to the direction of viewing the cover 80 from the base 10, and “lower” refers to the opposite direction.

  The base 10 is an integrally molded product of synthetic resin and is formed in a circular and substantially cylindrical shape. The inner peripheral surface of the base 10 is a 360 ° arc-shaped belt-like substrate mounting surface 11. A lower end side (one end side) 13 along the circumferential direction of the base 10 protrudes toward the center with respect to the inner peripheral surface of the base 10 (that is, more than the board mounting surface 11). A first rail forming portion 15 that protrudes toward the center of the arc is provided. The 1st rail formation part 15 is a substantially ring-shaped flat plate shape, and is formed over 360 degrees. In the center of the upper surface of the first rail forming portion 15, a first rail portion 17 formed of a ring-shaped recess (concave groove) is formed over 360 °. A plurality (four) of engaged portions 19 are provided at substantially equal intervals from the lower portion of the substrate mounting surface 11 (lower portion of the outer peripheral side wall) of the base 10 to the first rail forming portion 15. The engaged portion 19 is formed by providing a substantially slit-like through hole in a bent portion from the board mounting surface 11 to the first rail portion 15, and is cut out to the lower surface of the first rail forming portion 15. Yes. Thereby, the surface 15a on the side where the engaged portion 19 of the first rail forming portion 15 is provided is a surface obtained by adding the thickness of the flexible circuit board 50 described below to the surface of the substrate mounting surface 11, as shown in FIG. It is in a position that is slightly retracted. In addition, the guide surface 15b which consists of an inclined surface is formed in the upper part of the surface 15a. The guide surface 15b is inclined upward toward the first rail portion 17 side. A plurality of (four) small projection flat plate mounting portions 23 are provided at substantially equal intervals on the upper end side (the other end side) 21 along the circumferential direction of the base 10.

  As described above, the base 10 has a cylindrical shape, and the first rail is formed only in the lower end 13 to protrude in the center direction with respect to the inner peripheral surface (substrate mounting surface 11) of the base 10. Since the portion 15 is provided (that is, it is not a configuration in which a portion protruding in the center direction with respect to the inner peripheral surface of the base 10 is provided on the upper and lower ends of the cylinder), the mold is easily formed due to its structure. Can be integrally formed using

  The flexible circuit board 50 has a plurality of (two) sliding contact patterns 55 so as to be along the longitudinal direction on one surface (side to be an inner peripheral surface) of a flexible strip-shaped synthetic resin film 51 having flexibility. , 57 and one extraction pattern 59 are provided. 3 and 4 show a state in which the flexible circuit board 50 is curved in an arc shape (cylindrical shape), this shows a state when the flexible circuit board 50 is attached to the base 10, and any external force is applied. When not, it becomes a planar state (the same applies to FIG. 10 described below). As a material of the synthetic resin film 51, for example, polyethylene terephthalate resin (PET resin) or the like is used, and a strip-like shape is formed on the lower end (one end) 61 of the elongated and straight substrate body 51a. A plurality of (four) engaging portions 63 made of rectangular protrusions are provided, and a strip-like lead portion 65 is connected substantially vertically to the upper end (the other end) 64 of the substrate body 51a. It is configured. One of the two sliding contact patterns 55, 57 is a resistor pattern having a large resistance value, and the other sliding contact pattern 57 is a conductor pattern having a small resistance value. The drawing pattern 59 is connected to one end of the sliding contact pattern 55, and the drawing portion is connected to two drawing patterns (not shown) connected to the other end of the sliding contact pattern 55 and one end of the sliding contact pattern 57. Has been drawn to 65. Each of the engaging portions 63 is formed at a position / size to be inserted into each of the engaged portions 19 provided on the base 10.

  The cover 80 is an integrally molded product of synthetic resin, and projects a ring-shaped locking protrusion (projection) 83 from the center of the lower surface of the substantially circular ring flat plate-shaped cover main body 81, and further the lower surface of the cover main body 81. A second rail portion 85 formed of a 360 ° ring-shaped concave portion (concave groove) is formed at an inner position of the locking projection 83. The portion of the cover 80 that is radially inward from the portion provided with the locking projection 83, that is, the inner peripheral surface of the base 10 when the cover 80 is attached to the base 10 as shown in FIG. A portion protruding toward the center direction with respect to the (substrate mounting surface 11) is a second rail forming portion 86. On the other hand, rectangular projections 87 protrude from a plurality of locations (four locations) on the outer periphery of the cover main body 81, and attached portions 89 each having a rectangular small hole are provided in each projection 87. It has been. Each attached portion 89 is formed at a position facing each attaching portion 23 provided on the base 10 and has a size and shape into which these can be inserted. At a predetermined position on the outer periphery of the cover main body 81, a lead-out portion insertion portion 91 made of a substantially rectangular recess having a dimension capable of inserting the lead-out portion 65 of the flexible circuit board 50 is formed. On the other hand, the outer diameter of the locking projection 83 is formed to be substantially the same as the inner diameter of the surface of the base 10 plus the thickness of the flexible circuit board 50 (FIG. 6). reference). However, as shown in FIG. 5, a concave portion (concave groove) 83 a that is a part of the lead-out insertion portion 91 is formed on a part of the outer peripheral surface of the locking projection 83. Further, as shown in FIGS. 5 and 6, a guide surface 85 a made of an inclined surface is formed in a ring shape at the lower portion of the inner wall on the inner peripheral side of the second rail portion 85. The guide surface 85a is inclined downward toward the center in the radial direction. As described above, since the cover 80 has a substantially circular ring flat plate shape, it can be easily integrally formed using a mold because of its structure.

  7 is an enlarged view of the moving body 110, FIG. 7 (a) is a perspective view seen from the upper side, FIG. 7 (b) is a perspective view seen from the lower side, and FIG. 7 (c) is a side view. It is. As shown in these drawings, the moving body 110 is an integrally molded product of synthetic resin, and has a substantially rectangular flat plate-shaped moving body main body 111, and a columnar operation section 113 protruding from the center of the upper surface of the moving body main body 111. It comprises. The entire surface of the movable body 111 is curved in an arc along the moving direction (sliding direction) H of the movable body 110. The radius of curvature of the arc is substantially the same as the radius of curvature of the board mounting surface 11 of the base 10. A planar slider mounting surface 115 is formed on the lower surface of the movable body main body 111, and a pair of small protrusion-shaped slider mounting portions 117 are provided on the slider mounting surface 115. . In addition, the front and rear positions (positions near the four corners) in the movement direction H around the outer periphery of the movable body main body 111 are a pair of left and right pairs that are substantially rectangular and projecting in a direction perpendicular to the movement direction H. A shaped locking portion 119 is provided. Each locking portion 119 is formed in a shape and dimension that is inserted into the first rail portion 17 provided on the base 10 and the second rail portion 85 provided on the cover 80.

  The slider 130 is made of an elastic metal plate, and is configured by bending a pair of sliding booklets 133 protruding from one side of the outer periphery of a flat-plate-like slider base portion 131 at the base portion thereof by about 180 °. The slider base 131 is provided with a mounted portion 135 having a small hole into which each slider mounting portion 117 of the moving body 110 is inserted.

  Next, a method for assembling the electronic component 1-1 will be described. First, the slider base portion 131 of the slider 130 is brought into contact with the slider mounting surface 115 of the moving body 110 in advance, and at this time, each slider mounting portion 117 of the moving body 110 is connected to each cover of the slider 130. It is inserted into the attachment part 135 and fixed by heat caulking or the like. Then, the flexible circuit board 50 curved in a ring shape with the sliding contact patterns 55 and 57 facing inward is installed on the board mounting surface 11 of the base 10. At that time, each engaging portion 63 provided on the flexible circuit board 50 is inserted and locked into each engaged portion 19 provided on the base 10, whereby the flexible circuit board 50 is attached to the board mounting surface 11 of the base 10. Attach to. As shown in FIG. 5, each engaged portion 19 is formed with a guide surface 15b, so that each engaging portion 63 can be inserted smoothly. Thus, the flexible circuit board 50 can be easily attached to the board mounting surface 11 of the base 10 by locking the engaging part 63 of the flexible circuit board 50 to the engaged part 19 of the base 10. it can. In particular, when the flexible circuit board 50 is attached to the board mounting surface 11, the elastic force in the direction of spreading acts to make close contact with the board mounting surface 11. Therefore, the flexible circuit board 50 can be easily attached to the board mounting surface 11. Yes.

  Next, the movable body 110 to which the slider 130 is attached is disposed on the inner peripheral surface of the flexible circuit board 50. At this time, the sliding booklets 133 of the slider 130 are placed on the sliding contact patterns 55 and 57, respectively. Abut (see FIG. 5). At the same time, the two locking portions 119 on the lower side of the moving body 110 are inserted into the first rail portion 17 of the base 10 (see FIG. 5).

  Next, the cover 80 is placed on the upper edge 21 of the base 10, and at this time, each mounting portion 23 of the base 10 is inserted into each mounted portion 89 of the cover 80, Each mounting portion 23 protruding from the upper surface is fixed by caulking. At this time, as shown in FIG. 6, the upper portion of the flexible circuit board 50 is sandwiched and fixed between the board mounting surface 11 of the base 10 and the locking projection 83 of the cover 80. That is, the flexible circuit board 50 is securely attached to the board attachment surface 11 by fixing the vicinity of the upper and lower edges 61 and 64 thereof. At the same time, the two upper locking portions 119 of the moving body 110 are inserted into the second rail portion 85 of the cover 80 (see FIG. 5). Since the guide surface 85a is provided in the 2nd rail part 85 at this time, the insertion to the 2nd rail part 85 of the latching | locking part 119 can be performed smoothly. Further, at this time, the lead-out portion 65 of the flexible circuit board 50 passes through the lead-out portion insertion portion 91 provided in the cover 80 and is pulled out above the cover 80 (see FIG. 5). Thus, the assembly of the electronic component 1-1 is completed. The above assembling procedure is an example, and it goes without saying that the assembly may be performed using other various assembling procedures.

  In the electronic component 1-1 assembled as described above, when the moving body 110 is slid, the moving body 110 moves along the inner peripheral surface of the flexible circuit board 50 that is curved, and the slider 130 The sliding booklet 133 slides on the sliding contact patterns 55 and 57, whereby the detection output between the drawing patterns drawn to the drawing portion 65 changes. The moving body 110 can slide the endlessly by 360 ° or more. That is, the detection output can be obtained by using all the 360 ° inner peripheral surfaces constituting the substrate mounting surface 11.

  As described above, according to the electronic component 1-1, an electronic component having a configuration in which the moving body 110 moves on the inner peripheral surface side of the flexible circuit board 50 installed in an arc shape can be easily configured. Further, since the movable body 110 is disposed on the inner peripheral surface side of the flexible circuit board 50, the outer diameter of the electronic component can be reduced as compared with the structure in which the movable body 110 is disposed on the outer peripheral surface side of the flexible circuit board 50. . Further, in the electronic component 1-1, only one of the first and second rail portions 17 and 85 is provided on one end 13 side of the base 10, and the other second rail portion is provided. Since 85 is provided on the cover 80 which is a separate member, as described above, the base 10 having the substrate mounting surface 11 formed of an arc of 180 ° or more can be easily manufactured. That is, tentatively, the first and second rail portions 17 and 85 formed so as to protrude from the board mounting surface 11 toward the center of the arc are integrally formed on the both sides 13 and 21 side of the base 10, When the base 10 is formed in an arc shape, if the arc exceeds 180 °, the molding becomes difficult on the mold. In the case of the base 10 and the cover 80 used for the electronic component 1-1, Such a problem does not arise. Thereby, the moving range of the moving body 110 (sliding range of the slider 130) can be easily set to 180 ° or more.

  In addition, a first rail forming portion 15 is provided on one end side 13 of the base 10 so as to protrude from the board mounting surface 11 toward the center of the arc, and the cover 80 is attached to the other cover 80 on the other side of the base 10. A second rail forming portion 86 that protrudes toward the center of the arc from the board mounting surface 11 when attached to the end side 21 of the first and second rail forming portions 15 and 86 is provided on the opposite side of the first and second rail forming portions 15 and 86. Since the first and second rail portions 17 and 85 are formed on the surfaces, respectively, the entire moving body 110 can be positioned on the radially inner side of the inner peripheral side exposed surface of the flexible circuit board 50 and can be rotated by 360 °. It can be easily avoided that the flexible circuit board 50 (particularly, the portion of the lead-out portion 65 of the flexible circuit board 50) interferes with the moving body 110.

  Further, in the electronic component 1-1, the locking portions 119 of the moving body 110 are provided at four positions on the front and rear, left and right of the moving body 110, and are engaged with the first and second rail portions 17 and 85 at these four positions. Therefore, even if the first and second rail portions 17 and 85 are curved in an arc shape, the moving motion of the moving body 110 can be smoothly guided. That is, since the first and second rail portions 17 and 85 are curved in an arc shape, when the entire sides of the movable body 110 are inserted into the first and second rail portions 17 and 85, the first and second rail portions 17 and 85 are arcuately formed. When moving, there is a risk that the frictional resistance becomes large and the smooth movement of the moving body 110 may be hindered. According to this electronic component 1-1, the moving body 110 is provided at four locations on the front, rear, left and right in the moving direction. Since the engaging portion 119 is engaged with the first and second rail portions 17 and 85, there is little frictional resistance when the moving body 110 is moved in an arc shape, and the moving body 110 can be moved smoothly.

  8 is a perspective view of the electronic component 1-2 according to the second embodiment of the present invention, FIG. 9 is a perspective view of the electronic component 1-2 viewed from below, and FIG. 10 is a perspective view of the flexible circuit board 50-2. 11 is an enlarged view of the CC partial cross section of FIG. 8, and FIG. 12 is an enlarged view of the DD partial cross section of FIG. In the electronic component 1-2 shown in these drawings, the same or corresponding parts as those of the electronic component 1-1 shown in FIGS. Attached). Note that matters other than those described below are the same as those of the electronic component 1-1 shown in FIGS.

  The electronic component 1-2 is different from the electronic component 1-1 only in that the flexible circuit board 50-2 is attached to the base 10-2 by insert molding. That is, in the case of this electronic component 1-2, as shown in FIG. 10, the lower end side (one end side) 61-2 of the board main body 51a-2 of the flexible circuit board 50-2 is entirely shown in FIG. 3 protrudes downward from the lower edge 61 of the flexible circuit board 50 shown in FIG. 3, and the protruding belt-like portion is configured as an embedded portion 73-2. Note that, as described above, the flexible circuit board 50-2 is not curved and is in a flat state when no external force is applied (that is, pre-forming for making an arc shape is not performed). ).

  When the base 10-2 is formed, the flexible circuit board 50-2 is inserted into the ring-shaped cavity of the mold while being bent, and the flexible circuit board is inserted into the inner peripheral surface of the cavity at that time. The surface side of 50-2 (the surface side on which the sliding contact patterns 55-2 and 57-2 are provided) is opposed. Next, molten resin is supplied to the flexible circuit board 50-2 from a plurality of gates provided at predetermined intervals on the inner peripheral face outside the cavity facing the outer peripheral face side (back face side) of the flexible circuit board 50-2. It injects toward the back (outer peripheral surface). As a result, the flexible circuit board 50-2 is filled with the molten resin while being pressed against the inner peripheral surface of the cavity, and at the same time, as shown in FIG. 11 and FIG. The end side 61-2 (embedded portion 73-2) is insert-molded so as to be embedded in the base 10-2. Thus, it is preferable that the gate is provided to face the outer peripheral surface side of the flexible circuit board 50-2.

  As a result, the flexible circuit board 50-2 is firmly attached in close contact with the board attachment surface 11-2 of the base 10-2. If comprised in this way, one edge 61-2 (embedding part 73-2) of the flexible circuit board 50-2 will be embed | buried in the base 10-2 and fixed easily and reliably by insert molding. The flexible circuit board 50-2 can be attached to the board attachment surface 11-2 of the base 10-2. At the same time, the surface of the board mounting surface 11-2 where the flexible circuit board 50-2 is not located is the same as the surface of the flexible circuit board 50-2 (in other words, the flexible circuit board 50-2 is mounted on the board mounting surface 11-2). Embedded in). For this reason, the inner peripheral surface of the gap portion X1 (see FIG. 10) between both ends of the ring-shaped flexible circuit board 50-2 and the inner peripheral surface of the flexible circuit board 50-2 are flush with each other. Even when the slider 110-2 is rotated by 360 ° or more, no step (unevenness) is generated in the gap portion X1, smooth movement can be performed, and reliability is improved.

  In addition, as described above, the flexible circuit board 50-2 is directly bent without being preformed and inserted into the cavity to be molded, so that the flexible circuit board 50-2 extends at the time of preforming and the sliding contact pattern 55-2. , 57-2 can be stretched and broken. In some cases, the flexible circuit board 50-2 may be preformed.

  Since other configurations, assembling methods, and operational effects are all the same as those of the electronic component 1-1, description thereof will be omitted.

  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 example, a pair of sliding contact patterns is provided, but one or more may be provided. In the above example, the resistor pattern and the conductor pattern are used as the sliding contact pattern. However, a pattern used for various other purposes such as a switch pattern may be used.

  In the above example, the movable body is configured to be movable endlessly at 360 ° or more. However, by providing a stopper portion or the like at any position, the movable body is configured to be movable within a desired angle range of 360 ° or less. May be. At this time, the length of the flexible circuit board may be shortened according to the moving angle. Further, as shown by a dotted line in FIG. 11, the base and the inner wall surface portions of the first and second rail portions are extended so as to approach each other, and only the operation portion of the moving body protrudes to the outside. If it does so, the dust-proof effect of the part of the detection means which consists of a sliding contact pattern or a slider can be improved.

1-1, 1-2 Electronic component 10 Base 11 Board mounting surface 13 One side (lower side)
15 1st rail formation part 17 1st rail part (rail part)
19 engaged part 21 other side (upper side)
50 Flexible circuit board 55, 57 Sliding contact pattern 61 One side (lower side)
63 engaging portion 80 cover 85 second rail portion (rail portion)
86 2nd rail formation part 110 moving body 130 slider

Claims (5)

A base whose inner peripheral surface is an arc-shaped substrate mounting surface;
A flexible circuit board attached to the board mounting surface of the base;
A moving body that moves along the inner peripheral surface of the flexible circuit board;
A slider attached to the movable body and slidably contacting a slidable contact pattern provided on an inner peripheral surface of the flexible circuit board; and
Provided on one end side along the circumferential direction of the base is a first rail portion that slidably engages an engaging portion provided on one end side of the movable body,
Further, a cover formed by forming a second rail portion that slidably engages an engaging portion provided on the other end side of the movable body on the other end side along the circumferential direction of the base. Electronic parts characterized by being installed. The electronic component according to claim 1,
The base is formed in a substantially cylindrical shape, and its inner peripheral surface is the substrate mounting surface,
On one end side of the base, a first rail forming portion that protrudes toward the center with respect to the inner peripheral surface of the base is provided,
On the other hand, the cover is provided with a second rail forming portion that protrudes toward the center with respect to the inner peripheral surface of the base when the cover is attached to the other end of the base.
An electronic component comprising the first and second rail forming portions formed on the first and second rail forming portions, respectively. The electronic component according to claim 2,
By engaging an engaging part provided on one end of the flexible circuit board with an engaged part provided on the first rail forming part, the flexible circuit board is attached to the board mounting surface of the base. An electronic component characterized by being attached. The electronic component according to claim 2,
An electronic component characterized in that one end of the flexible circuit board is insert-molded so as to be embedded in the base, thereby attaching the flexible circuit board to a board mounting surface of the base. An electronic component according to any one of claims 1 to 4,
The locking part of the movable body is formed by protrusions inserted into the first and second rail portions before and after the outer periphery of the movable body in the moving direction.

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