JP6312511B2 - Drip-proof structure of operation knob for electronic parts - Google Patents

Description

  The present invention relates to a drip-proof structure for an operation knob for electronic components suitable for drip-proofing and dust-proofing a gap between an operation knob used for operating an electronic component and a case that exposes the operation knob and surrounds it. It is about.

  Conventionally, as a device for operating various portable devices such as compact cameras and video cameras, in-vehicle navigation systems, computers, various OA devices, game machines, etc., for example, a multi-functional electronic component (1-1 shown in Patent Document 1) )

  The multi-function electronic component (1-1) shown in FIG. 1 of Patent Document 1 has a push button knob (180) for operating the pressing electronic component at the center of the rotating knob (210) for operating the rotating electronic component. The rotary knob (210) is also installed as a knob for operating the swinging electronic component by pressing and swinging the rotary knob (210) from its upper surface.

  In the multi-function electronic component (1-1) of Patent Document 1, the liquid that enters from the gap between the opening (212) at the center of the rotary knob (210) and the push button knob (180) is the rotary body (90). The first drip-proof member (350) that prevents intrusion to the side and the liquid that has entered from the opening (401) of the outer case (400) rotate from the gap between the case (150) and the mounting base (60). A second drip-proof member (300) that prevents entry into the body (90) side is provided.

JP 2009-238707 A

  As described above, in the multi-functional electronic component (1-1) described in Patent Document 1, liquid intrusion into the multi-functional electronic component (1-1) is prevented. However, since the liquid itself cannot be prevented from entering through the gap between the rotary knob (210) and the opening (401) of the case (400), the liquid or dust that has entered through the gap is not allowed to enter the exterior case (400). There are problems such as adhesion to various other electronic components housed in the container.

  In order to solve the above problem, for example, a rubber packing may be sandwiched in a gap between the rotary knob (210) and the opening (401) of the case (400). However, if it does so, rotation and rocking | fluctuation of the rotary knob (210) which is a movable part will be obstructed by the said rubber packing, and there existed a possibility that the rotation operation and rocking | fluctuation operation could not be performed smoothly.

  The present invention has been made in view of the above-mentioned points, and an object thereof is a movable part that can effectively prevent water and dust from entering from a gap between an operation knob and an opening of a case. An object of the present invention is to provide a drip-proof structure for an operation knob for electronic parts, which can smoothly operate the operation knob.

The drip-proof structure of the operation knob for electronic components according to the present invention exposes the operation knob for electronic components operated by at least rotating and swinging, or at least rotating and moving up and down in the opening provided in the case. A flange projecting outward in the radial direction is provided around the operation knob, and a contact protrusion is provided at a position surrounding the periphery of the opening on the lower surface of the case, while a flexible plate is formed in a ring shape The drip-proof plate is formed and formed, and the drip-proof plate is placed on and brought into contact with the upper surface of the collar portion of the operation knob, and more outward than the position where it comes into contact with the operation knob. The contact knob of the case at the position, and further configured to be slidable with respect to the flange portion of the operation knob or the contact protrusion of the case when the operation knob rotates. Operation knob and case opening It is characterized in that to prevent the intrusion of water or dust from the gap between the.
According to the present invention, it is possible to effectively prevent water and dust from entering from the gap between the operation knob and the opening of the case.
On the other hand, the position where the drip-proof plate abuts the operation knob and the position where the drip-proof plate abuts the lower surface of the case are different positions, that is, the operation knob and the case are not structured to hold the drip-proof plate from above and below. The drip-proof plate is lightly touched on both the operation knob and the lower surface of the case. Thus rotation to that if the operation knob, Boshizukuban, This is also easily slide relative to one of the surrounding portion of the opening portion of the upper surface and the case bottom surface of the outer peripheral portion of the operating knob abutting, the operation The rotating operation of the knob is not hindered. When the control knob is swung or moved up and down, the lower surface of the case is not in contact with the outer peripheral portion of the operation knob in contact with the drip-proof plate, and the drip-proof plate is bent. The swinging motion or the vertical motion is not hindered. For these reasons, the operation knob can be smoothly rotated, swung, and vertically moved.
The effects as described above can be obtained simply by adding a drip-proof plate, and no special space is required for installing the drip-proof plate, and miniaturization is not hindered.

According to the present invention, since the form Boshizukuban in a ring shape, mounted in the drip plate to the operation knob can be easily performed over the entire periphery. At the same time, the drip-proof plate can be easily brought into contact with the entire periphery of the opening on the lower surface of the case.

Further , according to the present invention, the drip-proof plate can be easily mounted on the upper surface of the outer peripheral portion of the operation knob simply by placing the drip-proof plate on the upper surface of the collar portion.

Further , according to the present invention, since the drip-proof plate is brought into contact with the contact protrusion provided on the lower surface of the case, the two can be reliably contacted, and water and dust from the gap between the operation knob and the opening of the case Can be effectively prevented. At the same time, the contact between the drip-proof plate and the contact projection is substantially linear contact, so that the drip-proof plate can slide more smoothly at the contact portion, and the operation knob can be rotated more smoothly.

Further, the present invention is characterized in that the abutting protrusions are provided at least twice at a position surrounding the periphery of the opening, and the drip-proof plate is brought into contact with each abutting protrusion.
According to the present invention, since the contact protrusions are doubled and the drip-proof plate is brought into contact with both, a holding space for temporarily holding the liquid entering between the two contact protrusions can be formed, As a result, the infiltration of liquid can be prevented more effectively. The liquid once accumulated in the holding space disappears by evaporation or the like.

Further, the present invention is characterized in that a support portion for supporting the drip-proof plate from below is provided on the outer peripheral side of the contact protrusion.
According to the present invention, the support portion supports the drip-proof plate on the outer peripheral side of the contact protrusion from the lower side thereof, so that the drip-proof plate can be contacted with the contact protrusion more reliably. Drip-proof and dust-proof effects can be enhanced.

  According to the present invention, water and dust can be effectively prevented from entering from the gap between the operation knob and the opening of the case, and at the same time, the operation knob which is a movable part can be smoothly operated. it can.

1 is a cross-sectional view showing a multifunctional electronic component 1-1, a drip-proof plate 300, and a case (exterior case) 200. FIG. It is the perspective view which looked at the exterior case 200 equipped with the multifunctional electronic component 1-1 from the upper side. 1 is an exploded perspective view of a multifunctional electronic component 1-1, a drip-proof plate 300, and an exterior case 200. FIG. 1 is an exploded perspective view of a multifunctional electronic component 1-1 and a drip-proof plate 300. FIG. It is the perspective view which looked at the exterior case 200 from the lower side. It is an expansion schematic sectional drawing of the clearance gap S1 vicinity part. 3 is a perspective view showing a case 70. FIG. It is sectional drawing which shows the multifunctional electronic component 1-2, the drip-proof board 300-2, and the case (exterior case) 200-2. It is a perspective view which shows case 70-2.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a multifunctional electronic component 1-1, a drip-proof plate 300, and a case (hereinafter referred to as “exterior case”) 200 that constitute one embodiment of the present invention, and FIG. 2 is a multifunctional electronic component. FIG. 3 is an exploded perspective view of the multifunctional electronic component 1-1 and the drip-proof plate 300 separated from the exterior case 200, and FIG. 4 is a multifunctional view. FIG. 3 is an exploded perspective view in which a mold electronic component 1-1 and a drip-proof plate 300 are separated. As shown in these drawings, in this embodiment, the operation knob 90 of the multifunctional electronic component 1-1 on which the drip-proof plate 300 is installed is exposed in the opening 201 provided in the exterior case 200. Configured. In the following description, “upper” refers to the direction of viewing the outer case 200 from the drip-proof plate 300, and “lower” refers to the opposite direction.

  The multifunctional electronic component 1-1 includes a second circuit board 20, a mounting base 30, a first circuit board 40, a slider 50, a click spring 60, a case 70, and a support member 10. A push button knob 80 and an operation knob 90 are installed, and a resilient member 100 made of a coil spring is installed between the mounting base 30 and the push button knob 80. This multifunctional electronic component 1-1 has a function as a pressing electronic component and a function as a swinging electronic component in addition to the function as a rotating electronic component.

  The support member 10 is a metal hard plate (for example, an iron plate), and is fixed to a stationary member installed near the support member 10 at a position not shown.

  The second circuit board 20 is a flexible circuit board, in which a desired circuit pattern is formed on a synthetic resin film, the central switch 21 is installed at the center of the upper surface, and the central switch 21 is surrounded at equal intervals ( A plurality of (four, but only two shown in the figure) push switches 23 are installed at intervals of 90 °. Each of the central switch 21 and the push switch 23 is configured by installing an inversion plate formed by forming an elastic metal plate in a dome shape on a switch pattern (not shown) formed on the second circuit board 20.

  The mounting base 30 is formed by molding a synthetic resin into a substantially disc shape, and is provided with a cylindrical protruding portion 31 protruding upward in the center thereof and penetrating vertically in the center of the cylindrical protruding portion 31. An opening 33 is provided. A ring-shaped projecting portion 35 is provided around the cylindrical projecting portion 31 on the upper surface of the mounting base 30, and a spring receiving portion 37 is provided in a recess between the cylindrical projecting portion 31 and the projecting portion 35. A surface around the outside of the protruding portion 35 on the upper surface of the mounting base 30 is a substrate mounting portion 38. A pressing portion 39 that protrudes downward is formed at a position (four locations, but only two are shown in the figure) facing the respective pressing switches 23 on the lower surface of the mounting base 30.

  The first circuit board 40 is a flexible circuit board in which a desired circuit pattern is formed on a synthetic resin film. The first circuit board 40 is provided with an opening 41 through which the protruding portion 35 of the mounting base 30 is inserted in the center, and has an electrical function on the upper surface. The sliding contact pattern (not shown) which is a part is formed and comprised. The sliding pattern may be a switch pattern, a resistor pattern, or a pattern having various functions other than those.

  The slider 50 is made of an elastic metal plate, and includes a base 51 formed in a substantially ring shape and a sliding contact brush 53 that protrudes from the base 51 and extends obliquely downward. An opening 55 is provided at the center of the base 51.

  The click spring 60 is made of an elastic metal plate, and includes a base portion 61 formed in a substantially ring shape and an arm portion 63 that protrudes from the outer periphery of the base portion 61 and is installed so as to surround the outer periphery of the base portion 61. Has been. An elastic contact portion 65 that is bent so as to protrude upward is formed at a predetermined position of the arm portion 63. An opening 67 is provided at the center of the base 61.

  FIG. 7 is a perspective view showing the case 70. As shown in FIG. 1 and FIG. 1, the case 70 is formed by molding a synthetic resin, and has a substantially circular flat plate-like upper surface portion 71 and side wall portions that protrude downward in a cylindrical shape from the outer peripheral lower surface of the upper surface portion 71. 73, four substantially T-shaped hinge portions 79 projecting radially outward from the side wall portion 73, and four fixing portions 78 for connecting the hinge portions 79 to each other. Configured. At the center of the upper surface portion 71, a circular opening 75 penetrating vertically is provided through which a shaft support portion 99 of an operation knob 90 described below is rotatably inserted. From the lower surface of the side wall portion 73, there are projected mounting portions 74 made of four (only three are shown in FIG. 7) small protrusions. The hinge part 79 is formed so as to be bent easily by making the whole part into a substantially thin plate shape. As shown in FIG. 1, a click engagement portion 77 is provided on the lower surface of the upper surface portion 71. The click engagement portion 77 is formed with a number of irregularities that elastically contact the elastic contact portion 65 of the click spring 60 in a ring shape. . Further, four mounting protrusions 76 (only three are shown in FIG. 7) protrude from the lower surface of each fixing portion 78.

  The push button knob 80 is a synthetic resin molded product, and includes a substantially disc-shaped main body portion 81 and a columnar pressing portion 83 protruding downward from the center of the lower surface of the main body portion 81, and the outer periphery of the main body portion 81. A thin ring-shaped collar portion 85 is projected from the lower portion. A concave spring receiving portion 87 is formed at a position surrounding the pressing portion 83 on the lower surface of the main body portion 81.

  The operation knob 90 is a molded product of synthetic resin, and protrudes from the outer periphery of the substantially disc-shaped main body portion 91 downward in a cylindrical shape, and further protrudes radially outward from the lower portion of the side wall portion 93. A collar portion 95 is provided. A circular opening 97 having an inner diameter dimension (however, an inner diameter dimension smaller than the outer diameter dimension of the collar portion 85) through which the main body portion 81 of the push button knob 80 is inserted is provided in the center of the main body portion 91. Yes. In addition, a cylindrical shaft support portion 99 that protrudes downward is provided around the opening 97 on the lower surface of the main body portion 91. The inner diameter of the shaft support 99 is formed such that the flange 85 of the push button knob 80 can be moved up and down through a narrow gap, and the outer diameter of the shaft support 99 is inserted into the opening 75 of the case 70. And is dimensioned to be pivotally supported.

  In order to assemble the multifunctional electronic component 1-1, the main body 81 of the push button knob 80 is inserted into the opening 97 of the operation knob 90 from below, and then the shaft support 99 of the operation knob 90 is attached to the case 70. The click spring 60 and the slider 50 are integrally fixed to the lower end surface of the shaft support 99 by a fixing means (not shown) provided on the shaft support 99. As a result, the operation knob 90 with the push button knob 80 attached thereto is rotatably attached to the case 70 (its main body 72). Next, one end of the resilient means 100 is placed on the spring receiving portion 87 of the pushbutton knob 80, and the mounting base 30 on which the first circuit board 40 is placed is placed below the spring receiving portion 87, and the mounting portion 74 shown in FIG. The mounting base 30 is fixed to the lower surface of the side wall portion 73 of the case 70. Then, the support member 10 on which the second circuit board 20 is placed is installed below the mounting base 30, and the space between the support member 10 and the fixing portion 78 of the case 70 is fixed by the mounting protrusion 76 provided on the fixing portion 78. As a result, the main body 72 of the case 70 and the mounting base 30 and the operation knob 90 attached thereto can be swung with respect to the support member 10. Thereby, the multi-function electronic component 1-1 is completed.

  As described above, the support member 10 is fixed to a stationary side member (not shown) installed inside (lower side) of the exterior case 200. Therefore, the support member 10 is relatively stationary with respect to the outer case 200. On the other hand, the operation knob 90 swings in the entire circumferential direction when the hinge portion 79 is bent with respect to the support member 10 and the fixing portion 78 together with the main body portion 72 of the case 70, the push button knob 80, the mounting base 30, and the like. .

  FIG. 5 is a perspective view of the exterior case 200 as viewed from below. As shown in FIG. 1 and FIGS. 1 to 4, the outer case 200 is a molded product of synthetic resin, and is configured by providing a circular opening 201 at a predetermined position. The inner diameter of the opening 201 is a dimension that allows the operation knob 90 of the multifunctional electronic component 1-1 to be inserted almost exactly.

  Further, a contact projection 203 for contacting the drip-proof plate 300 is provided at a position surrounding the periphery of the opening 201 on the lower surface of the exterior case 200. The contact protrusions 203 are circular protrusions, and two concentric circles are provided so as to double surround the opening 201. Both contact protrusions 203 have the same height. The tip (lower end) portion of the contact protrusion 203 is a circular linear contact portion 205. The inner diameter dimension of the inner contact protrusion 203 is larger than the outer diameter dimension of the operation knob 90 (the collar portion 95).

  The drip-proof plate 300 is configured by forming a flexible thin plate-like synthetic resin film into a ring shape. In this embodiment, a fluororesin having high water repellency and good slidability is used as the synthetic resin material. The inner diameter of the opening 301 formed at the center of the drip-proof plate 300 is substantially the same as the outer diameter of the main body 91 of the operation knob 90. Further, the outer diameter dimension of the drip-proof plate 300 is larger than the outer diameter dimension of the contact protrusion 203 outside the lower surface of the outer case 200.

  Then, as shown in FIG. 3, the drip-proof plate 300 is put on the operation knob 90 of the multifunctional electronic component 1-1, and the main body 91 of the operation knob 90 is inserted into the opening 301 of the drip-proof plate 300. As a result, the drip-proof plate 300 is placed on the upper surface of the collar portion 95 of the operation knob 90. Next, the multifunctional electronic component 1-1 on which the drip-proof plate 300 is placed is installed in the vicinity of the lower surface of the outer case 200, and at this time, the main body 91 of the operation knob 90 is placed in the opening 201 of the outer case 200. Insert and expose. At this time, as shown in FIG. 1, the upper surface of the drip-proof plate 300 comes into contact with the two contact protrusions 203 provided on the lower surface of the exterior case 200. That is, the drip-proof plate 300 abuts on the upper surface of the collar portion 95 that is the outer peripheral portion of the operation knob 90, and the drip-proof plate 300 is formed on the abutting protrusion 203 around the opening 201 on the lower surface of the case 200. The plate 300 is in contact with the operation knob 90 at a position outside the position where it is in contact with the operation knob 90. In other words, the case 200 is not in contact with the upper part of the drip-proof plate 300 in contact with the upper surface of the outer peripheral portion of the operation knob 90, and the operation knob 90 is in the lower part of the drip-proof plate 300 in contact with the case 200. Are not in contact. More specifically, a gap S <b> 2 necessary for the collar portion 95 to move up and down is formed between the portion of the drip-proof plate 300 placed on the collar portion 95 and the lower surface of the case 200. On the other hand, since the support member 10 is fixed to a stationary member (not shown) and the outer case 200 is also fixed to the stationary member, the positions of both are relatively fixed. The above assembling procedure is an example, and it goes without saying that the assembly may be performed using other various assembling procedures.

  Next, an operation method of the multifunctional electronic component 1-1 mounted on the outer case 200 will be described. First, when the push button knob 80 is pressed against the elastic force of the elastic means 100, the pressing portion 83 presses the central switch 21, reverses the reverse plate, and turns on the central switch 21. When the pressing is released, the reverse plate automatically returns to the original shape, the central switch 21 is turned off, and the push button knob 80 is raised to the original position at the same time.

  Next, when the operation knob 90 is rotated, the elastic contact portion 65 of the click spring 60 is elastically contacted with the unevenness of the click engagement portion 77 of the case 70 to produce a click feeling, and at the same time, the sliding contact brush 53 of the slider 50 is moved. The output signal is changed by sliding on the sliding contact pattern formed on the first circuit board 40. When the operation knob 90 is rotated, the drip-proof plate 300 can be easily maintained in contact with either the upper surface of the collar portion 95 of the operation knob 90 and the contact protrusion 203 of the outer case 200 or both. To slide. At this time, as described above, since the drip-proof plate 300 has no portion sandwiched between the operation knob 90 and the case 200, the drip-proof plate 300 slides easily with respect to the operation knob 90, and the case 200 Therefore, the rotation operation of the operation knob 90 is not hindered by the drip-proof plate 300, and the rotation operation of the operation knob 90 can be performed smoothly. Particularly in this example, the contact between the drip-proof plate 300 and the contact protrusion 203 is substantially linear contact, so that the drip-proof plate 300 can slide more smoothly at the contact portion, and the operation knob 90 can be rotated. It can be performed more smoothly.

  Further, when a portion near the outer periphery of the upper surface of the main body 91 of the operation knob 90 is pressed, the hinge portion 79 of the case 70 bends, so that the mounting base 30 also swings integrally with the operation knob 90 and the like, and directly below the pressed portion. The pressing portion 39 of the mounting base 30 in the vicinity presses the pressing switch 23 facing it, reverses the reversing plate, and turns on the pressing switch 23. When the pressing is released, the reverse plate automatically returns to its original shape, the pressing switch 23 is turned off, and at the same time, the operation knob 90 is raised to the original position. When the operation knob 90 is swung (moved up and down), as described above, the lower surface of the case 200 is not in contact with the upper portion of the drip-proof plate 300 placed on the collar portion 95, and the collar portion 95 is moved up and down. Since the gap S2 necessary for movement is formed and the drip-proof plate 300 is easily bent, the swinging operation (vertical movement operation) of the operation knob 90 is not hindered, and the swinging of the operation knob 90 is not hindered. Movement (vertical movement) operation can be performed smoothly.

  Next, in FIG. 1, a case where liquid adheres to the upper surface of the outer case 200 and the operation knob 90 and the liquid enters from the gap S <b> 1 between the opening 201 of the outer case 200 and the operation knob 90 will be described. FIG. 6 is an enlarged schematic cross-sectional view of the vicinity of the gap S1. In the figure, the liquid that has entered from the gap S 1 adheres to the upper surface of the drip-proof plate 300. However, since the lower surface of the drip-proof plate 300 is in contact with the upper surface of the collar portion 95, liquid cannot enter between the drip-proof plate 300 and the collar portion 95. In particular, in this example, the inner diameter dimension of the opening 301 formed at the center of the drip-proof plate 300 is substantially the same as the outer diameter dimension of the main body 91 of the operation knob 90. There is almost no gap between the inner peripheral side walls, which can further prevent the liquid from entering.

  On the other hand, since the upper surface of the drip-proof plate 300 is in contact with the contact protrusion 203, liquid cannot enter from between the drip-proof plate 300 and the lower surface of the exterior case 200. In particular, in this example, by providing two contact projections 203, the ingress of liquid is first prevented by the inner contact projection 203, and a small amount of liquid that has entered over the inner contact projection 203 further enters the outer side. Since the intrusion is prevented by the contact protrusion 203, the infiltration of the liquid can be further effectively prevented. In other words, since the abutting protrusions 203 are provided in duplicate and the drip-proof plate 300 is brought into contact with both, the holding space A1 that temporarily holds the liquid to enter between the two abutting protrusions 203 (see FIG. 6). This can prevent liquid from entering more effectively. The liquid once accumulated in the holding space A1 disappears by evaporation or the like.

  As described above, the flexible drip-proof plate 300 is brought into contact with the upper surface of the collar portion 95 of the operation knob 90 and the periphery of the opening 201 on the lower surface of the outer case 200 at different positions simultaneously. Without impeding the operability of the knob 90, it is possible to effectively prevent water from entering from the gap S1 between the operation knob 90 and the opening 201 of the exterior case 200.

  In particular, since the drip-proof plate 300 is formed in a ring shape, the drip-proof plate 300 can be easily attached to the operation knob 90 over the entire circumference of the operation knob 90. At the same time, the drip-proof plate 300 can be easily brought into contact with the periphery of the opening 201 on the lower surface of the outer case 200 over the entire circumference.

  By the way, the operation knob 90 is lowered when the push switch 23 is pressed (the opposite side is raised). At this time, the operation knob 90 is between the drip-proof plate 300 and the collar portion 95 or between the drip-proof plate 300 and the contact protrusion 203. There is a risk of creating a slight gap. However, these gaps are very small (for example, about 0.2 mm), and the liquid does not pass through the gaps (or is difficult to pass) due to the surface tension of the liquid. Furthermore, since the contact protrusion 203 is formed in a double manner, there is no problem even if a gap occurs in any one of the contact protrusions 203 if no gap occurs in the other. Further, since the contact between the drip-proof plate 300 and the collar portion 95 is a surface contact in this example, the gap itself is hardly generated and the liquid does not pass (or hardly passes).

  Further, since the operation knob 90 is provided with the collar portion 95, the drip-proof plate 300 can be easily mounted on the upper surface of the outer peripheral portion of the operation knob 90 simply by placing the drip-proof plate 300 on the upper surface of the collar portion 95. be able to.

  The push button knob 80 is elastically brought into close contact with the lower surface of the stepped portion formed at the root portion of the inner periphery of the shaft support 99 of the operation knob 90 by the resilient member 100. For this reason, the liquid that has entered from between the outer periphery of the main body 81 of the pushbutton knob 80 and the opening 97 of the operation knob 90 cannot pass through this close contact portion. On the other hand, when the push button knob 80 is pressed and lowered, the upper surface of the flange portion 85 of the push button knob 80 and the lower surface of the stepped portion formed at the root portion of the inner periphery of the shaft support portion 99 of the operation knob 90. There is a gap between them. However, the gap size is very small (for example, about 0.2 mm). Further, the gap between the outer peripheral side surface of the collar portion 85 and the inner peripheral side surface of the shaft portion 99 is also very small (for example, about 0.06 mm). Accordingly, the liquid that has entered from between the outer periphery of the main body 81 of the pushbutton knob 80 and the opening 97 of the operation knob 90 does not pass through (or hardly passes through) the gap due to its surface tension.

  In the above description, the liquid intrusion has been described, but the invasion of dust and the like can be prevented for the same reason.

  FIG. 8 is a cross-sectional view showing a multifunctional electronic component 1-2, a drip-proof plate 300-2, and a case (hereinafter referred to as “exterior case”) 200-2 that constitute another embodiment of the present invention. It is a perspective view which shows case 70-2. 8 and 9, the same reference numerals are given to the same or corresponding parts as those of the multi-function electronic component 1-1 according to the embodiment shown in FIGS. The subscript “−2” is attached to each symbol). Note that matters other than those described below are the same as those in the embodiment shown in FIGS.

  The multifunctional electronic component 1-2 is different from the multifunctional electronic component 1-1 in the case 70-2. That is, the case 70-2 is different from the case 70 in that a ring-shaped support portion 701-2 is integrally attached to the outer peripheral side of the four fixing portions 78-2. That is, the support portion 701-2 is provided so as to surround the main body portion 72-2 (and the surrounding hinge portion 79-2), and as shown in FIG. It is formed so as to be located a little further on the outer peripheral side of the outer contact protrusion 203-2. The upper end surface of the support portion 701-2 is a sliding contact surface 703-2 on which the drip-proof plate 300-2 slides.

  When the case 70-2 configured in this way is used, as shown in FIG. 8, the drip-proof plate 300-2 is supported by the outer contact projection 203-2 from the lower side on the outer peripheral side. It is supported by the sliding contact surface 703-2 of the part 701-2. That is, the drip-proof plate 300-2 is supported on both sides of the pair of contact protrusions 203-2 that contact from above, by the flange portion 95-2 that contacts from below and the support portion 701-2. For this reason, the drip-proof plate 300-2 reliably comes into contact with the flange portion 95-2 and the contact protrusion 203-2. More specifically, the flange portion 95-2, the contact projection 203-2, and the support portion 701-2 of the operation knob 90-2 are configured so as to press the drip-proof plate 300-2 slightly and elastically contact it. If this is the case, the collar portion 95-2 and the contact protrusion 20-3 are always and reliably ensured at any of the position where the collar portion 95-2 is lowered by pressing the operation knob 90-2 and the raised portion. The drip-proof plate 300-2 can be brought into contact with the support portion 701-2, and the drip-proof and dust-proof effects can be more reliably enhanced.

  In the above example, the support portion 701-2 is provided integrally with the case 70-2. However, the support portion 701-2 is provided not in the case 70-2 (the stationary side fixing portion 78) but in other stationary portions. You may provide in a side member (for example, support member 10 grade | etc.,).

  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, an operation knob of a multifunctional electronic component is used as the operation knob, and the operation knob rotates and swings. However, the operation knob is an electronic component that only rotates or swings. The present invention can also be applied. The present invention can also be applied to an electronic component in which the operation knob moves up and down. In the above example, a push button knob or the like for configuring the push-type electronic component is installed at the center, but it goes without saying that the push-type electronic component may be omitted. In addition, the operation knob used in the above example has a substantially disk shape, but the shape of the operation knob is not limited to this, and may be, for example, a shaft-shaped operation knob.

  In the above example, the drip-proof plate is brought into contact with the upper surface of the flange portion of the operation knob. However, the flange portion is not provided, for example, the position of the outer peripheral portion of the upper surface of the main body portion of the operation knob is arranged low. The portion may be a drip-proof plate contact portion, and the drip-proof plate may be in contact with this portion. On the other hand, in the above example, an example in which the drip-proof plate is brought into contact with the contact projection of the exterior case is shown, but the contact-proof projection is not provided, and for example, the drip-proof plate is configured to directly contact the lower surface of the exterior case. May be. In the above example, the drip-proof plate is installed so that it does not adhere to the upper surface of the collar part of the operation knob and the lower surface of the exterior case, but alternately contacts (the drip-proof plate is ring-shaped, so it will not fall off even if it is not bonded) ) For example, a drip-proof plate may be bonded to either the upper surface of the collar portion or the lower surface of the outer case. In short, the drip-proof plate is brought into contact with the upper surface of the outer peripheral portion of the operation knob, and in contact with the outer periphery of the lower surface of the exterior case at a position outside the position in contact with the operation knob. Thus, any configuration may be used as long as it prevents the ingress of water or dust from the gap between the operation knob and the opening of the outer case.

  In addition, in order to prevent drip and at the same time easily swing and move the operation knob, a drip-proof plate is brought into contact with the flange of the operation knob or the outer peripheral portion of the upper surface of the main body of the operation knob. Provide a gap, that is, a space in the upper part of the operation knob that contacts the drip-proof plate, or leave it open so that no other member such as an exterior case is installed in the upper part of the operation knob that contacts the drip-proof board. good.

  Moreover, although the example which provided two contact protrusions provided in an exterior case twice was shown in the said example, depending on the case, only one may be sufficient and three or more may be sufficient. Moreover, although the exterior case was used as the case in the above example, the exterior case is not necessarily required. In addition, as the material for the drip-proof plate, a fluororesin having good water repellency and slidability is used in the above example. However, a flexible plate made of various other materials may be used in some cases.

DESCRIPTION OF SYMBOLS 1 Multifunctional type electronic component 10 Support member 20 2nd circuit board 30 Mounting base 40 1st circuit board 50 Slider 60 Click spring 70 Case 80 Pushbutton knob 90 Operation knob 95 Collar part 100 Elastic member 200 Exterior case (case)
DESCRIPTION OF SYMBOLS 201 Opening part 203 Contact protrusion 300 Drip-proof board S1 Crevice 1-2 Multifunctional electronic component 701-2 Support part 90-2 Operation knob 95-2 Collar part 200-2 Exterior case (case)
203-2 Abutting protrusion 300-2 Drip-proof plate

Claims (3)

In the opening provided in the case, an operation knob for an electronic component operated by at least rotating and swinging, or at least rotating and moving up and down is exposed,
While providing a flange projecting radially outward around the operation knob,
A contact protrusion is provided at a position surrounding the opening on the lower surface of the case,
On the other hand, a drip-proof plate formed by forming a flexible plate into a ring shape,
The drip-proof plate is placed on and brought into contact with the upper surface of the flange portion of the operation knob, and is brought into contact with the contact protrusion of the case at a position outside the position in contact with the operation knob. Further, when the operation knob is rotated , water from a gap between the operation knob and the opening of the case is configured to be slidable with respect to the flange portion of the operation knob or the contact protrusion of the case. Or the drip-proof structure of the operation knob for electronic components characterized by preventing intrusion of dust. It is a drip-proof structure of the operation knob for electronic parts according to claim 1 ,
A drip-proof structure for an operation knob for an electronic component, wherein the abutment protrusion is provided at least double at a position surrounding the periphery of the opening, and the drip-proof plate abuts on each abutment protrusion. A drip-proof structure for the operation knob for electronic parts according to claim 1 or 2 ,
A drip-proof structure for an operation knob for electronic parts, wherein a support portion for supporting the drip-proof plate from the lower side is provided on the outer peripheral side of the contact protrusion.

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