JP2007096059A - Slidable electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slidable electronic component capable of easily making the height and width of a moving body storage space uniform in a sliding direction. <P>SOLUTION: A slidable variable resistor 1-1 has a moving body 10 which slides, a case 50 constituted by forming a storage 55 between both side walls 53 and 53 stood from a bottom 51 by having the bottom 51, and the side walls 53 and 53, an electrical function comprising a slider 45 and a circuit pattern 81 that vary the electric output of the moving body 10 by its movement, and a cover 100 which covers the storage 55 of the case 50. The case 50 is made of synthetic resin, and the cover 100 is made of a metal plate. The reverse surface of the cover 100 is brought into contact with upper sides 53a and 53a of the side walls 53 and 53 of the case 50 to define the height C1 of the moving body storage space C formed of the storage 55 of the case 50 and the reverse surface of the cover 100. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sliding electronic component such as a sliding variable resistor or a sliding switch.

  For example, as shown in FIG. 10, the conventional sliding electronic component 500 is attached to a substrate 510 on which a sliding contact pattern 513 is formed, a movable object 530 placed on the substrate 510, and a lower surface of the movable object 530. A slider 540; and a case 560 that is fixed on the back surface of the mounting plate 520 provided on the lower side of the substrate 510 with a claw 565 that covers the movable mold 530 and that is provided on the lower side of the outer periphery. (For example, refer patent document 1). Then, the movable object 530 is slid by moving the lever 550 protruding from the upper surface of the movable object 530 and penetrating through the opening 561 of the case 560 toward the front and back of the paper surface of FIG. The slider 540 is brought into sliding contact, and its electrical output is changed.

However, the conventional sliding variable resistor 500 has the following problems.
(1) The height a1 of the movable object storage space a formed between the upper surface of the substrate 510 and the inner surface of the case 560 is the distance between the upper surface of the substrate 510 and the back surface 561a of the upper plate portion 561 of the case 560. It depends on the distance. However, the case 560 is made of a metal plate, and the side wall portion 563 is provided by bending the outer periphery of the upper surface portion 561 by sheet metal processing. For this reason, there is a possibility that an error in the height dimension of the side wall portion 563 in the longitudinal direction (front and rear directions in FIG. 10, that is, the sliding direction of the movable object 530) may occur. For this reason, an error occurs in the height dimension a1 of the movable object storage space a in the sliding direction of the movable object 530, and the movable object 530 that slides in the movable object 530 rattles back and forth, right and left, When the movable object 530 is slid, a change (unevenness) occurs in the sliding force according to the slide position (in other words, the sliding pressure of the slider 540 changes according to the slide position). There was a fear.

(2) Since the claw 565 of the case 560 is caulked to the lower surface side of the mounting plate 520, the side wall portion 563 of the case 560 may be pulled and may be deformed by opening outward (swelling). When the side wall 563 bulges outward, not only the height dimension a1 of the movable object storage space a of the case 560 but also the width dimension a2 thereof changes. There is a possibility that the 530 may rattle back and forth, right and left, or that the force (smoothness) of sliding according to the slide position of the movable object 530 may change (unevenness).
The above problems (1) and (2) become larger as the length of the sliding variable resistor 500 in the sliding direction becomes longer, and is particularly used in applications where it is desired to slide and move with a light stroke with the same force for a long stroke. It becomes remarkable in cases.

(3) In the above-described conventional example, the upper surface and both side surfaces of the movable mold 530 are in sliding contact with the inner surface of the metal case 560. Then, the roughness of the surface of the metal case 560 (generally on the surface of the molded resin) Compared to the rough metal surface, the smooth sliding movement of the movable object 530 is hindered.
JP 2001-351806 A

  The present invention has been made in view of the above points, and an object of the present invention is to provide a movable type in which the height and width dimensions of the movable object storage space can be easily made uniform in the sliding direction, and the inside moves. An object of the present invention is to provide a slide-type electronic component that does not cause rattling, can uniformly make the force for sliding the movable object in the sliding direction, and can realize smooth sliding movement of the movable object.

  The invention according to claim 1 of the present invention includes a movable object that slides and a bottom part and a pair of side walls that extend from the bottom part along the sliding direction so that the movable object is interposed between the side walls. A case formed with a storage portion for storage; an electrical function portion that changes its electrical output by movement of the movable object; and a cover that covers the storage portion of the case; A movable object formed by the housing portion of the case and the lower surface of the cover by being made of resin, the cover is made of a metal plate, and the lower surface of the cover is in contact with the upper sides of the pair of side walls of the case The slide electronic component is characterized in that the height of the storage space is defined.

  According to the second aspect of the present invention, an engaging portion is provided on the upper sides of the pair of side walls of the case, while an engaged portion is provided at a position corresponding to the engaging portion of the cover, and the cover is provided in the case. The sliding electronic component according to claim 1, wherein the engaged portion is attached by engaging the engaged portion with the engaging portion.

  According to a third aspect of the present invention, the engaging portion of the case is an engaging protrusion protruding from the upper side of the side wall of the case, and the engaged portion of the cover is engaged by inserting the engaging protrusion. The slidable electronic component according to claim 2, wherein the hole is an engaged hole.

  The invention according to claim 4 of the present application is characterized in that the cover is attached to the case by bending a locking portion protruding from the outer periphery of the cover to the bottom of the case. In the sliding electronic parts.

  In the invention according to claim 5 of the present application, the cover is provided by bending a side surface portion covering the outer surface of the side wall of the case from the upper surface, and the engaged portion of the cover is bent by the cover. 5. The sliding electronic component according to claim 2, wherein the sliding electronic component is provided at a bent portion.

  The invention according to claim 6 of the present application is characterized in that the cover is attached to the case by crushing the front end of the engaging protrusion of the case inserted into the engaged hole of the cover. It exists in the slide type electronic component of description.

  According to the seventh aspect of the present invention, a plurality of engaging portions of the case are provided on an upper side of the side wall, and engaged portions of the cover are provided to face the engaging portions, respectively. 7. The width dimension between the pair of side walls of the case is made uniform by engaging the engaging portion of the cover and the engaged portion of the cover. It is in a sliding electronic component.

  According to the first aspect of the present invention, the height of the movable object storage space is defined by bringing the lower surface of the cover into contact with the upper sides of the both side walls of the case. Accordingly, the height dimension of the side wall of the case that is accurately formed coincides with the height dimension of the movable object storage space, and the height dimension of the movable object storage space becomes uniform in the sliding direction of the movable object. There is no need to move, and the movement of the movable object becomes smooth evenly at any position in the sliding direction. Also, both sides along the sliding direction of the movable object slide in contact with the smooth inner surface of the synthetic resin case and do not slide against the rough surface of the metal cover, so the movable object slides smoothly. Can do.

  According to the invention described in claim 2 or 3, the engaged portion (engaged hole) of the cover is engaged with the engaging portion (engaging protrusion) provided on the upper side of the both side walls of the case. Therefore, the separation distance between the side walls of the case is fixed by the upper surface of the cover, and the side walls of the case do not spread, so the width of the mobile object storage space becomes uniform. There is no back-and-forth and back-and-forth movement, and the movement of the movable object is smooth evenly at any position in the sliding direction.

  According to invention of Claim 4, a cover can be reliably attached to a case. In other words, even if such a mounting structure is used, a sliding electronic component that produces the effects of the first, second, and third aspects can be obtained.

  According to the fifth aspect of the present invention, since the engaged portion of the cover is provided in the bent portion of the cover, the lower surface of the upper surface portion of the cover is brought into contact with the upper sides of both side walls of the case as in the first aspect. The effects of claim 1 and the effects of claims 2 and 3 are also produced at the same time, and the outer side surface of the cover can be brought into contact with the outer surface of the side wall of the case. The dimensions can be reduced.

  According to the sixth aspect of the present invention, the cover is attached to the case by crushing the engagement protrusion of the case inserted into the engaged hole of the cover, so that a process of providing a side surface portion on the cover is not performed. But you can easily attach the cover to the case.

  According to the seventh aspect of the present invention, since the plurality of engaging portions of the case and the engaged portion of the cover are respectively engaged, the width dimension between the pair of side walls of the case is slid on the movable object. It can be made more uniform in the direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 is a cross-sectional view of a sliding electronic component (hereinafter referred to as “sliding variable resistor”) 1-1 according to the first embodiment of the present invention, and FIG. 2 is a sliding variable resistor 1-1. FIG. 3 is an exploded perspective view of the slide type variable resistor 1-1. As shown in these drawings, the slide type variable resistor 1-1 includes a movable object 10, a case 50 that accommodates the movable object 10, and a cover 100 that covers the accommodating portion 55 of the case 50. Has been. Each component will be described below.

  FIG. 4 is an exploded perspective view of the movable object 10. As shown in FIG. 1 and FIG. 1 to FIG. 3, the movable object 10 is placed on the substantially rectangular main body 20, a lever 40 attached to the center of the upper surface of the main body 20, and the main body 20. An elastic plate 33 and a sliding plate 37 are provided. The main body 20 is a molded product of a synthetic resin (in this embodiment, it is a POM resin, but may be other various synthetic resins), and the linear slide of the movable object 10 in the housing portion 55 of the case 50 is provided. It is formed in a substantially rectangular shape elongated in the direction A, and is directed outward in a direction perpendicular to the sliding direction A (hereinafter referred to as “width direction B”) at the upper part of the four corners of the left and right sides 21 in the sliding direction A. A substantially rectangular sliding contact portion 23 is provided. A rectangular attachment portion 27 that is elongated in the sliding direction A is provided at the center of the upper surface of the main body portion 20, and a rectangular attachment hole 29 is provided on the upper surface thereof, and a lower end portion 41 of the lever 40 described below is press-fitted ( (Or insert molding). As shown in FIG. 1, on the lower surface of the main body portion 20, a flat base 47 of the slider 45 made of two elastic metal plates, which are electrical function portions, is a small protrusion that protrudes from the lower surface of the main body portion 20. The tip of 31 is fixed by heat caulking. Two sliding booklets 49 protruding from the base 47 are folded and installed on the lower surface side of each base 47.

  The lever 40 is formed of a thin metal plate that is long in the vertical direction, and a lower end portion 41 thereof is integrally fixed to the main body portion 20 by press-fitting or insert molding into the mounting portion 27 of the main body portion 20. The reason why the lever 40 is made of metal is to increase its strength. The elastic plate 33 is formed by forming an elastic plate made of metal (for example, phosphor bronze) into an outer shape that is placed on the upper surface of the main body portion 20, and the mounting portion 27 is inserted through the center thereof. A rectangular opening 35 is provided, and the whole is curved in an arc shape so as to protrude upward along the sliding direction A. The sliding plate 37 is formed by forming a thin plate made of synthetic resin (for example, POM resin) into an outer shape to be placed on the upper surface of the main body portion 20, and the mounting portion 27 is inserted through the center thereof. A rectangular opening 39 is provided.

  FIG. 5 is a view showing a part of the case 50, FIG. 5 (a) is a partial plan view, and FIG. 5 (b) is a partial side sectional view. As shown in FIG. 1 and FIG. 1 to FIG. 3, the case 50 is a long rectangular box shape with an open upper surface, and includes a bottom portion 51 and a pair of side walls 53 erected from the bottom portion 51 along a sliding direction A, 53 is formed between the side walls 53 and 53 to form a storage portion 55 for storing the main body portion 20 of the movable article 10. A flexible circuit board 80 is insert-molded on the inner bottom surface of the bottom portion 51 of the case 50 so that the upper surface is exposed in the storage portion 55. The flexible circuit board 80 has a predetermined circuit pattern (a linear two-dimensional pattern) that is an electric function part on the upper surface of a flexible synthetic resin film (for example, polyethylene terephthalate film, polyphenylene sulfide film, etc.) in the sliding direction A. (A set of four circuit patterns, one circuit pattern of each set being a resistor pattern) 81. Further, terminal plates 90 connected to the end portions of the circuit patterns 81 protrude from the lower surfaces of both end portions in the sliding direction A of the case 50. On the other hand, on the upper sides 53a, 53a of the pair of side walls 53, 53, there are engaging portions 57 (hereinafter referred to as "engagement protrusions" in each embodiment) protruding upward from the upper sides 53a, 53a at predetermined intervals. A plurality are provided. Each engagement protrusion 57 is formed in a thin plate rectangular shape that is thinner than the side wall 53 and extends in the sliding direction A. Moreover, the upper part of the inner side surface which a pair of side walls 53 and 53 opposes consists of the linear step part extended toward the sliding direction A by making the thickness of the upper side side walls 53 and 53 thinner than the lower part side. Slidable contact portions 59 and 59 are formed. Further, a strip-shaped side wall reinforcing portion 61 extending in the sliding direction A having a thickness greater than that of the upper portion thereof is provided at the lower portion of the outer side surface of the side wall 53, and a plurality of locking portions are formed by cutting the upper and lower portions at predetermined positions. A part guide groove 63 is provided.

  6 and 7 are diagrams showing the flexible circuit board 80 and the terminal board 90 which are insert-molded in the case 50. FIG. That is, to manufacture the case 50, first, a flexible circuit board 80 and a terminal board 90 are prepared as shown in FIG. The flexible circuit board 80 has terminal patterns 83 connected to the plurality of circuit patterns 81 formed on the upper surfaces of both ends in the sliding direction A (only one end is shown in FIGS. 6 and 7). A rectangular terminal board insertion hole 85 penetrating the flexible circuit board 80 is formed. On the other hand, the terminal plate 90 is provided with a substantially rectangular flat plate-shaped terminal abutting portion 93 at the tip of a supporting portion 91 that is in the form of a narrow band and faces the sliding direction A, and further, the terminal abutting portion 93 on the side where the supporting portion 91 is connected. A narrow band-like terminal portion 95 protruding from the side is bent at a substantially right angle downward. The base portion (not shown) of each support portion 91 is connected to a single metal plate so that the pitch between the terminal portions 95 is the same as the pitch between the terminal plate insertion holes 85 of the flexible circuit board 80. It is trying to become. Then, as shown in FIG. 7, the terminal portions 95 of the terminals 90 are inserted into the terminal plate insertion holes 85 of the flexible circuit board 80 and the terminal contact portions 93 are in contact with the terminal patterns 83, not shown. A support portion 91 that is installed in the mold, presses and cures the molten molding resin into a cavity formed in the mold, removes the mold, and protrudes from both end surfaces of the case 50 in the sliding direction A. If cut, the case 50 shown in FIGS. 3 and 5 is completed. As a result, the bottom 51 is formed on the lower surface side of the flexible circuit board 80, the side walls 53 are formed on both sides along the longitudinal direction of the flexible circuit board 80, and the terminal contact portion 93 of the terminal plate 90 mainly of the support portion 91. A terminal pressing portion 65 is formed on a portion protruding from the terminal pressing portion 65 to cover the portion.

  As shown in FIGS. 3 and 5, a hole 67 extending vertically is provided in the vicinity of both ends of the side wall 53. The bottom of the hole 67 has terminals 90 at both ends of the plurality of terminals 90. A part of the upper surface of the terminal contact portion 93 is exposed. The reason for this configuration is as follows. That is, when the flexible circuit board 80 and the terminal plate 90 are installed in the mold and the melt molding resin is press-fitted into the surrounding cavity, the terminal pattern 83 of the flexible circuit board 80 and the terminal contact portion 93 of the terminal board 90 are provided. In order to prevent the molten molding resin from entering between the terminals and incomplete connection, it is preferable that the surface of the mold is in contact with the upper surface of the terminal plate 90. For this reason, with respect to the terminals 90 other than both ends of the plurality of terminals 90, the mold surface that abuts on the flexible circuit board 80 in order to form the storage portion 55 is also applied to the upper surface of the terminal abutment portion 93 at the same time. By abutting, the above-described object can be achieved (therefore, these terminal abutting portions 93 are exposed in the storage portion 55). However, in order to reduce the length of the case 50 in the sliding direction A, when the side wall 53 is formed to the full extent of the both ends of the case 50 (if formed in this way, the entire length of the case 50 is used for the sliding movement of the movable object 10). The length of the case 50 can be shortened with respect to the required sliding dimension of the movable object 10), and the side wall 53 is positioned on the terminal contact portions 93 at both ends. The mold surface for forming the portion 55 cannot be brought into contact with the die 55. Therefore, a separate protrusion is protruded downward at a position facing the terminal contact portion 93 at both ends in the cavity forming the side wall 53 of the mold, and the tip of the protrusion is provided at the end of the terminal contact portion 93 at both ends. For this reason, the hole 67 is formed.

  As shown in FIG. 3, the cover 100 is formed in a shape that covers the case 50 by bending a metal plate into a box shape having an open bottom surface. That is, the cover 100 bends the side surface portions 103a, b, c, and d protruding from the four outer peripheral sides of the substantially rectangular upper surface portion 101 that covers the storage portion 55 of the case 50 in a substantially perpendicular downward direction, and slides the cover 100 in the sliding direction. A locking portion 105 protrudes from a position opposite to each locking portion guide groove 63 of the case 50 on the lower end side (that is, the outer periphery of the cover 100) of the pair of side surface portions 103 a and 103 c along A, while the upper surface portion 101. A rectangular lever insertion hole 107 extending in the sliding direction A is provided at the center of the lens. Here, the locking portion 105 is configured to protrude from the lower end side of the base portion 105a having a rectangular shape and substantially the same width as the locking portion guide groove 63, and to project a narrow band-shaped bent portion 105b. In addition, a bent portion 109 bent from the upper surface portion 101 of the pair of side surface portions 103a and 103c along the sliding direction A has a dimensional shape (slit shape) that is closely engaged with each engagement protrusion 57 of the case 50. An engaged portion (hereinafter referred to as an “engaged hole”) 111 is provided.

  In order to assemble the slide type variable resistor 1-1, first, the elastic plate 33 and the sliding plate 37 are placed on the upper surface of the main body 20 in FIG. 4. At that time, the lever 40 is inserted into the opening 35 of the elastic plate 33 and the opening 39 of the sliding plate 37. It is preferable to apply grease to the surface of the sliding plate 37 in order to improve slidability. Next, in FIG. 3, the main body portion 20 of the movable article 10 is stored in the storage portion 55 of the case 50. At that time, as shown in FIG. 1, the bottom surfaces of the four sliding contact portions 23 of the movable object 10 are brought into contact with the sliding contact portion contact portions 59 of the case 50 and are simultaneously attached to the lower surface of the movable object 10. Each sliding booklet 49 of the moving element 45 is brought into contact with each circuit pattern 81. Then, the cover 100 is put on the case 50. At that time, both side surfaces 103 a and 103 c along the sliding direction A of the cover 100 cover the outer surfaces of the side walls 53 and 53 of the case 50, and the base 105 a of each locking portion 105 of the cover 100 is each locking portion guide of the case 50. The engagement protrusions 57 of the case 50 are inserted and engaged with the engaged holes 111 of the cover 100 while being guided by the grooves 63. When the bent portions 105b of the respective locking portions 105 of the cover 100 are bent to the lower surface side of the bottom portion 51 of the case 50, the case 50 and the cover 100 are fixed integrally, and the slide type variable resistor 1-1 is completed. .

  At this time, as can be seen from FIGS. 1 and 2, the lower end sides of the side surface portions 103 a, b, c, and d of the cover 100 are not in contact with the upper end sides of the side wall reinforcing portions 61 of the case 50. The lower surface of the upper surface portion 101 of the cover 100 is brought into contact with the upper sides 53a and 53a of the pair of side walls 53 and 53. Thus, the height C1 of the movable object storage space C defined by the storage portion 55 of the case 50 and the lower surface of the upper surface portion 101 of the cover 100 is defined. Further, the sliding plate 37 is elastically contacted with the lower surface of the upper surface portion 101 of the cover 100 by the elastic plate 33, and at the same time, the lower surface of the sliding contact portion 23 of the movable object 10 is elastically placed on the sliding contact portion contact portion 59 of the case 50. Touched.

  When the lever 40 of the movable object 10 is moved in the sliding direction A, the sliding booklet 49 of the slider 45 slides on the circuit pattern 81, so that the resistance value between the terminal boards 90 changes. To do. At this time, since the lower surface of the sliding contact portion 23 of the movable object 10 is elastically contacted with the sliding contact portion contact portion 59 of the case 50 by the elastic plate 33, an appropriate operating force is applied to the movement of the movable object 10. At the same time, rattling when the movable object 10 is slid can be reliably prevented (if there is a gap without contact (elastic contact), there is a risk of rattling).

  And since this slide type variable resistor 1-1 has the said structure, it produces the following effects. That is, the height C1 of the movable object storage space C is defined by bringing the lower surface of the flat upper surface portion 101 of the cover 100 into contact with the upper sides 53a of the side walls 53 of the case 50. Therefore, the height C1 is synthesized. It coincides with the height dimension C1 of the side wall 53 of the case 50 formed with high accuracy by molding the resin. The cover 100 is made of a metal plate, but the flatness of the flat upper surface portion 101 that is not bent is high. Accordingly, the height C1 of the movable object storage space C is the same in the sliding direction A of the movable object 10, and the movable object 10 is not rattled back and forth and left and right. Is smooth with a uniform force at any position in the sliding direction A. In addition, since both the smooth side surfaces made of synthetic resin along the sliding direction A of the movable article 10 are in sliding contact with the smooth inner side surface of the case 50 made of synthetic resin, the movable article 10 can be slid smoothly.

  Further, since the engaged holes 111 of the cover 100 are engaged with the engaging protrusions 57 provided on the upper sides 53 a of the side walls 53 of the case 50, the separation distance between the side walls 53 of the case 50 is fixed by the upper surface portion 101 of the cover 100. Thus, the side walls 53 of the case 50 do not expand (or narrow), and therefore the width C2 of the movable object storage space C is the same in each part in the slide direction A. There is no rattling from side to side, and the movement of the movable object 10 becomes smooth with a uniform force at any position in the sliding direction A. In addition, since the cover 100 is attached to the case 50 by bending the engaging portion 105 (the bent portion 105b) protruding from the outer periphery of the cover 100 to the lower surface of the bottom portion 51 of the case 50, the cover 100 is securely attached to the case 50. Can be attached. In other words, even if such a reliable mounting structure is used, the movable object 10 can be moved smoothly and smoothly with a uniform force at any position in the slide direction A as described above.

  In addition, since the engaged hole 111 of the cover 100 is provided in the bent portion 109 of the cover 100, the lower surface of the upper surface portion 101 of the cover 100 can be brought into contact with the upper sides 53a of the side walls 53 of the case 50, so At the same time, the side surfaces 103a and 103c of the cover 100 can be placed so as to be in contact with the outer surface of the side wall 53 of the case 50, and the external dimensions (width dimensions) can be reduced. Further, since the plurality of engaging projections 57 of the case 50 and the engaged holes 111 of the cover 100 are respectively engaged at predetermined intervals, the width of the movable object storage space C between the pair of side walls 53 of the case 50 is engaged. The dimension C2 can be further made the same in each part in the sliding direction A. That is, since the case 50 is made of a synthetic resin, it expands and contracts depending on temperature and humidity. For this reason, when the case 50 is long, its width dimension C2 may change in each part. Therefore, the case 50 is fixed with a cover 100 made of a metal plate that does not expand and contract in each part in the sliding direction A, and the dimensional change due to expansion and contraction of the case 50 is eliminated.

[Second Embodiment]
FIG. 8 is an exploded perspective view of a slide type variable resistor 1-2 according to the second embodiment of the present invention, and FIG. 9 is a cross-sectional view. In the slide type variable resistor 1-2 shown in the figure, the same or corresponding parts as those of the slide type variable resistor 1-1 according to the first embodiment are denoted by the same reference numerals (however, “−2” is given to each reference numeral). ) Items other than those described below are the same as those in the first embodiment shown in FIGS. The slide type variable resistor 1-2 according to this embodiment covers the movable object 10-2, the case 50-2 that accommodates the movable object 10-2, and the accommodating portion 55-2 of the case 50-2. And a cover 100-2. Each component will be described below.

  The movable object 10-2 includes a substantially rectangular main body 20-2 and a columnar lever 40-2 attached to the center of the upper surface of the main body 20-2. The main body 20-2 and the lever 40-2 are integrally molded products of synthetic resin (in this embodiment, POM resin, but may be other various synthetic resins), and a rectangular shape is formed on the upper surface of the main body 20-2. A guide portion 43-2 projecting in the right and left sides 21-2 in the sliding direction A is provided at the four corners of the slide portion 23-2. As shown, a slider 45-2 made of an elastic metal plate is attached to the lower surface of the main body 20-2.

  Similar to the first embodiment, the case 50-2 has a rectangular box shape with an open top surface, and includes a bottom portion 51-2 and a pair of side walls 53-2 extending from the bottom portion 51-2 along the sliding direction A. , 53-2 is formed between the side walls 53-2 and 53-2 to form a storage portion 55-2 for storing the main body portion 20-2 of the movable article 10-2. A flexible circuit board 80-2 is insert-molded on the inner bottom surface of the bottom portion 51-2 of the case 50-2 so that the upper surface is exposed in the storage portion 55-2. The flexible circuit board 80-2 is configured by providing a predetermined circuit pattern 81-2 in the sliding direction A on the upper surface of a flexible synthetic resin film. In the case of this embodiment, the terminal board 90-2 is connected to only one end of each circuit pattern 81-2. Therefore, each terminal board 90-2 protrudes from the lower surface of one end part in the sliding direction A of the case 50-2. ing. The connection structure of the terminal board 90-2 to each circuit pattern 81-2 is the same as that of the first embodiment. On the other hand, on the upper sides 53a-2 and 53a-2 of the pair of side walls 53-2 and 53-2, engaging projections 57-2 projecting upward from the upper sides 53a-2 and 53a-2 are provided at predetermined intervals. A plurality are provided. In addition, a groove 64-2 is provided at a predetermined position on the outer surface of the side wall 53-2 by cutting it up and down. In the case of this embodiment, the sliding contact portion 23-2 of the movable mold 10-2 is placed extending in the sliding direction A on the inner base portions of the side walls 53-2 and 53-2 of the case 50-2. Sliding contact portion contact portions 59-2 and 59-2 are provided.

  The cover 100-2 is configured to include an upper surface portion 101-2 having a shape of a flat metal plate and covering the upper surface of the case 50-2. A rectangular lever that extends toward the sliding direction A in the center of the cover 100-2 and allows the movable portion 10-2 to move in the sliding direction A while inserting and guiding the guide portion 43-2. The insertion hole 107-2 is provided, and the lever insertion hole 107-2 includes a through-hole through which the engagement protrusion 57-2 of the case 50-2 is inserted and engaged on both sides along the sliding direction A. A plurality of joint holes 111-2 are provided at predetermined intervals. A fixing piece 113-2 is provided at a position facing the groove 64-2 of the case 50-2 so as to protrude from both sides of the cover 100-2 in a tongue-like shape and bend downward substantially at a right angle. .

  And in order to assemble this slide type variable resistor 1-2, the main-body part 20-2 of the movable-type thing 10-2 is accommodated in the accommodating part 55-2 of case 50-2. At that time, as shown in FIG. 9, the lower surfaces of the four sliding contact portions 23-2 of the movable mold 10-2 abut on the sliding contact section abutting portion 59-2 of the case 50-2, and at the same time the movable mold Each sliding booklet 49-2 of the slider 45-2 attached to the lower surface of 10-2 is in contact with the circuit pattern 81-2. Then, the cover 100-2 is put on the case 50-2, and at that time, the engaging protrusions 57-2 of the case 50-2 are inserted into and engaged with the engaged holes 111-2 of the cover 100-2. . Then, if the cover 100-2 is attached to the case 50-2 by crushing the tip of the engaging protrusion 57-2 of the case 50-2 inserted into the engaged hole 111-2 of the cover 100-2, The case 50-2 and the cover 100-2 are fixed integrally to complete the slide type variable resistor 1-2.

  Also in this embodiment, the lower surface of the upper surface portion 101-2 of the cover 100-2 is brought into contact with the upper sides 53a-2 and 53a-2 of the pair of side walls 53-2 and 53-2 of the case 50-2. The height C1-2 of the movable object storage space C-2 defined by the storage portion 55-2 of 50-2 and the lower surface of the upper surface portion 101-2 of the cover 100-2 is defined. If the lever 40-2 of the movable object 10-2 is moved in the sliding direction A, the sliding booklet 49-2 of the slider 45-2 slides on the circuit pattern 81-2. The resistance value between each terminal board 90-2 changes. At this time, the upper and lower surfaces of the sliding contact portion 23-2 of the movable object 10-2 are in contact with the lower surface of the cover 100-2 and the upper surface of the sliding contact portion contact portion 59-2 of the case 50-2.

  And since this slide type variable resistor 1-2 has the said structure, it produces the following effects similarly to 1st Embodiment. That is, the height C1 of the movable object storage space C-2 is obtained by bringing the lower surface of the flat upper surface portion 101-2 of the cover 100-2 into contact with the upper sides 53a-2 of the side walls 53-2 of the case 50-2. -2 is defined, the height dimension C1-2 matches the height dimension C1-2 of the side wall 53-2 of the case 50-2 formed with high precision by molding synthetic resin. The cover 100-2 is made of a metal plate, but the flatness of the flat upper surface portion 101-2 that is not bent is high. Accordingly, the height C1-2 of the movable object storage space C-2 is the same in the sliding direction A of the movable object 10-2, and the movable object 10-2 is rattled back and forth and right and left. The movement of the movable object 10-2 is smooth with a uniform force at any position in the slide direction A. Moreover, since the both side surfaces along the sliding direction A of the synthetic resin movable mold 10-2 are in sliding contact with the smooth inner surface of the synthetic resin case 50-2, the movable mold 10-2 is slid smoothly. be able to.

  Further, since the engaging protrusions 57-2 provided on the upper sides 53a-2 of the side walls 53-2 of the case 50-2 are engaged with the engaged holes 111-2 of the cover 100-2, The separation distance of the wall 53-2 is fixed by the upper surface portion 101-2 of the cover 100-2, and the side walls 53-2 of the case 50-2 do not expand (or narrow), and therefore the movable object storage space C- The width dimension C2-2 of 2 is the same in each part in the sliding direction A. From this point, the movable object 10-2 does not rattle back and forth and right and left, and the moving object 10-2 moves in the sliding direction A. In any of these positions, smoothness is achieved with a uniform force. Further, since the cover 100-2 is attached to the case 50-2 by crushing the engagement protrusion 57-2 of the case 50-2 inserted into the engaged hole 111-2 of the cover 100-2, The cover 100-2 can be easily attached to the case 50-2 without processing such as providing side surfaces. In other words, even if such an attachment structure is used, the movable object 10-2 can be moved smoothly and smoothly with a uniform force at any position in the slide direction A as described above. In addition, since a plurality of engaging projections 57-2 of the case 50-2 and the engaged holes 111-2 of the cover 100-2 are respectively engaged at predetermined intervals, even if the ambient temperature or humidity changes. The width C2-2 of the movable object storage space C-2 between the pair of side walls 53-2 of the case 50-2 made of synthetic resin can be made the same in each part in the sliding direction A.

  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 described above, the slider 45 is slidably brought into contact with the circuit pattern 81 as the electric function portion, and the resistance value is changed. However, the circuit pattern 81 may be configured by a switch pattern, or the sliding may be performed. A sliding variable resistor or a sliding switch having various structures other than the combination of the moving element 45 and the circuit pattern 81 may be used. In short, any configuration may be employed as long as the electrical function unit changes its electrical output as the mobile object 10 moves. In the above embodiment, the engaging portion of the case 50 is the engaging protrusion 57 and the engaged portion of the cover 100 is the engaged hole 111. However, there are various shapes and structures of the engaging portion and the engaged portion. Deformation is possible. The point is that the cover may be attached to the case by engaging the engaged portion with the engaging portion. In the above-described embodiment, a plurality of engaging protrusions (engaging portions) 57 and engaged holes (engaged portions) 111 are provided. However, depending on circumstances, only one may be provided.

It is a cross-sectional view of the sliding variable resistor 1-1. It is a perspective view of the slide type variable resistor 1-1. It is a disassembled perspective view of the slide-type variable resistor 1-1. 2 is an exploded perspective view of a movable object 10. FIG. It is a figure which shows a part of case 50, Fig.5 (a) is a partial top view, FIG.5 (b) is a partial sectional side view. It is a figure which shows the flexible circuit board 80 and the terminal board 90 which are insert-molded by case 50. FIG. It is a figure which shows the flexible circuit board 80 and the terminal board 90 which are insert-molded by case 50. FIG. It is a disassembled perspective view of the slide type variable resistor 1-2. It is a cross-sectional view of the sliding variable resistor 1-2. It is a cross-sectional view of a conventional sliding electronic component.

Explanation of symbols

1-1 Sliding variable resistor (sliding electronic component)
10 Mobile 20 Main body 40 Lever 45 Slider (Electrical function unit)
A Slide direction 50 Case 51 Bottom part 53 Side wall 53a Upper side 55 Storage part 57 Engagement protrusion (engagement part)
80 Flexible circuit board 81 Circuit pattern (electrical function part)
90 Terminal board 100 Cover 101 Upper surface portion 103a, b, c, d Side surface portion 105 Locking portion 105a Base portion 105b Bending portion 109 Bending portion 111 Engagement hole (engaged portion)
C Mobile storage space C1 Height C2 Width 1-2 Slide variable resistor

Claims (7)

A moving object that slides,
A case in which a storage part for storing the movable object is formed between the side walls by having a bottom part and a pair of side walls extending from the bottom part along the sliding direction;
An electrical functional unit that changes its electrical output by movement of the movable object;
A cover that covers the housing portion of the case,
The case is made of synthetic resin, and the cover is made of a metal plate,
Furthermore, the height dimension of the movable object storage space formed by the storage part of the case and the lower surface of the cover is defined by abutting the lower surface of the cover against the upper sides of the pair of side walls of the case. Electronic components.   An engaging portion is provided on the upper side of the pair of side walls of the case, while an engaged portion is provided at a position corresponding to the engaging portion of the cover, and the cover has an engaged portion on the case. The sliding electronic component according to claim 1, wherein the sliding electronic component is attached by being engaged with the sliding electronic component.   The engaging part of the case is an engaging protrusion protruding from the upper side of the side wall of the case, and the engaged part of the cover is an engaged hole into which the engaging protrusion is inserted and engaged. The sliding electronic component according to claim 2.   The sliding electronic component according to claim 2 or 3, wherein the cover is attached to the case by bending a locking portion protruding from the outer periphery of the cover to the bottom of the case. The cover is provided by bending a side surface portion covering the outer surface of the side wall of the case from the upper surface thereof,
The sliding electronic component according to claim 2, wherein the engaged portion of the cover is provided in a bent portion of the cover.   4. The slide type electronic component according to claim 3, wherein the cover is attached to the case by crushing a tip of an engagement protrusion of the case inserted into the engaged hole of the cover.   A plurality of engaging portions of the case are provided on the upper side of the side wall, and engaged portions of the cover are provided to face the engaging portions, respectively. The sliding electronic component according to any one of claims 2 to 6, wherein a width dimension between a pair of side walls of the case is made uniform by engaging with a portion.

Images