JP2020017465A - Multidirectional pressing switch - Google Patents

Abstract

To provide a multidirectional pressing switch capable of easily and surely drip-proof of a switch contact.SOLUTION: A multidirectional pressing switch 1 includes: an operation knob 30; an operation body 10 which integrally oscillates with the oscillation of the operation knob 30 and holds the operation knob 30 in a manner of independent vertical movement; a central switch contact 93 which is mounted on the bottom face side of the operation knob 30 and operated by the vertical movement of the operated knob 30; a peripheral switch contact 95 which is mounted on the bottom face side of the operation body 10 and is operated by the oscillation of the operation body 10; and a dust-proof and drip-proof member 50 which covers the whole central switch content 93 and peripheral switch contact 95 and on which the operation knob 30 and the operation body 10 are mounted. The central switch contact 93 is operated by the operation knob 30 through the dust-proof and drip-proof member 50, and the peripheral switch contact 95 is operated by the operation body 10 through the dust-proof and drip-proof member 50.SELECTED DRAWING: Figure 4

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-directional push switch that operates different switch contacts by pushing or swinging an operation knob.

  Conventionally, as a device for operating a video device, a game machine, an in-vehicle navigation device, various OA devices, various remote control devices, various portable devices, etc., a multi-directional push switch having an operation knob that swings in multiple directions has been developed. It is used.

  As shown in, for example, Patent Literature 1, this type of multi-directional pressing switch has a swing member (40) as an operation knob, and a base (41) on a base (41) of the swing member (40). A switch operating member (60) is attached so as to swing together with the swing of 41), and one pressing portion (45) provided on the lower surface of the base (41) and four pressing portions provided on the lower surface of the switch operating member (60). The switch contacts (23) and (24) are arranged at positions opposing to (65), and when the swing member (40) is pressed downward in the upright position, the pressing portion (45) pushes the switch contact (23). When the switch (40) is pushed (ON) and the swing member (40) is swung, the switch actuating member (60) is also swung and the lowered pressing portion (65) presses (ON) the switch contact (24). It is configured. Further, the above members are housed in upper and lower cases (80) and (10).

JP-A-11-144567

  However, the conventional multi-directional switch disclosed in Patent Document 1 does not have a drip-proof structure for preventing intrusion of liquid or dust (hereinafter referred to as “liquid”). For this reason, for example, the liquid or the like that has entered the inside of the upper case (80) through the gap between the through hole (81) of the upper case (80) and the lever (43) of the swinging member (40) can be easily converted into each of the switch contacts (23), (24) There is a fear that the electric function may reach the upper part and impair its electrical function (for example, poor contact).

  In order to solve the above problem, for example, a method of attaching a drip-proof resin film to the upper surface of the flexible switch substrate (20) on which the switch contacts (23) and (24) are installed is also conceivable. However, the adhered resin film is easily peeled due to a gap formed between the resin film and the flexible switch substrate (20), and the drip-proof effect cannot be said to be reliable.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a multi-directional pressing switch that can easily and reliably prevent a switch contact from being drip-proof.

The present invention provides an operation knob, an operating body that swings integrally with the swing of the operation knob and holds the operation knob so as to move up and down independently, and an operation body installed on a lower surface side of the operation knob, A central switch contact operated by the vertical movement of a knob, a peripheral switch contact installed on the lower surface side of the operating body and operated by swinging of the operating body, and covering the entire central switch contact and the peripheral switch contact; A dust-proof and drip-proof member on which the operation knob and the operating body are installed, and the central switch contact is operated via the dust-proof and drip-proof member by the operation knob; The method is characterized in that the peripheral switch contact is operated via a drop member.
According to the present invention, since the dust-proof and drip-proof member is installed so as to cover the entire central switch contact and the peripheral switch contact, the central switch contact and the peripheral switch contact can be easily and reliably dust- and drip-proof.

In addition, in the present invention, in addition to the above features, the central switch contact and the peripheral switch contact are mounted on a base, and the operating body is fixed to the base through the dustproof and dripproof member. It is characterized by.
ADVANTAGE OF THE INVENTION According to this invention, the displacement of the installation position of a dust-proof drip-proof member with respect to an operating body and a base can be prevented.

According to the present invention, in addition to the above features, the operating body is provided with a knob holding portion for holding the operation knob movably up and down, and an operation for operating the peripheral switch contact at a position around the knob holding portion. Part, a fixing part which is installed around the knob holding part and the operating part and is fixed to the base through the dustproof and drip-proof member, and swings between the knob holding part, the operating part and the fixing part. And a hinge portion that is movably connected.
According to the present invention, the dust-proof and drip-proof member is fixed by the knob holding portion of the operating body and the fixing portion provided around the operating portion. The displacement can be reliably prevented.
At the same time, since the knob holding part, the operating part, and the fixed part are connected by the hinge part, the knob holding part and the operating part can be swung easily and reliably, and at the same time, the knob holding part and the operating part are swung. There is no need to prepare separate parts for performing the operation, and the configuration can be simplified.

  ADVANTAGE OF THE INVENTION According to this invention, drip-proof of a switch contact can be aimed at easily and reliably.

FIG. 2 is a perspective view of the multi-directional pressing switch 1. FIG. 2 is an exploded perspective view of the multi-directional pressing switch 1. FIG. 3 is a perspective view of the operating body 10, an operation knob 30, and a dust-proof drip-proof member 50 as viewed from below. FIG. 2 is a schematic cross-sectional view of the multi-directional pressing switch 1.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a multi-directional switch 1 according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the multi-directional switch 1, and FIG. FIG. 4 is a perspective view of the operating body 10, the operation knob 30, and the dust-proof and drip-proof member 50 viewed from below, and FIG. 4 is a schematic sectional view of the multi-directional pressing switch 1 (AA schematic sectional view of FIG. 1). . As shown in these drawings, the multi-directional pressing switch 1 includes an operating body 10, an operation knob 30, a dust-proof and drip-proof member 50, a switch contact fixing sheet 70, a switch board 90, and a base 110. ing. In the following description, “up” refers to the direction in which the operating body 10 is viewed from the dust-proof and drip-proof member 50, and “down” refers to the opposite direction.

  The operating body 10 is a molded product of a synthetic resin, and is connected to a knob holding portion 11 formed at the center, four operating portions 13 formed on an outer lower surface of the knob holding portion 11, and an outer periphery of the knob holding portion 11. The thin plate-shaped hinge portion 15 and four fixing portions 17 projecting downward from a predetermined position of the hinge portion 15 are integrally formed.

  The knob holding portion 11 has a substantially truncated conical shape with a hollow inside, and has a knob insertion hole 19 penetrating in a rectangular shape at the upper center thereof. On the inner surface side of the knob holding portion 11, four (only three are shown in FIG. 3) plate-like projections 21 are provided at equal intervals in the circumferential direction. Below each projection 21, a concave positioning recess 23 (only two are shown in FIG. 3) into which a positioning projection 37 of the operation knob 30 described below is inserted is formed.

  The operating portion 13 is formed so as to protrude downward from four positions at equal intervals in the circumferential direction on the lower surface near the outer periphery of the knob holding portion 11 in the form of small projections.

  The hinge portion 15 includes four flat plate-shaped protrusions 15a that protrude linearly (radially) radially outward from an outer peripheral position of a portion where the operation portions 13 of the knob holding portion 11 are provided, A flat annular portion 15b for connecting the tip of each projecting portion 15a in a ring shape.

  The fixing portion 17 is provided at an intermediate position for connecting the respective protruding portions 15a of the annular portion 15b, and has a cylindrical fixing portion main body 17a protruding downward from the lower surface of the annular portion 15b, and protruding from the lower surface of the fixing portion main body 17a. And a small protrusion-shaped base insertion portion 17b.

  The operation knob 30 is a molded product made of a synthetic resin, and has a substantially disk-shaped knob base 31, a substantially square column-shaped knob 33 protruding above the knob base 31, and protruding downward from the lower center of the knob base 31. And a small projection-shaped operating portion 35 are integrally formed. From the outer periphery of the knob base 31, four rectangular small projection-like positioning projections 37 project at equal intervals. The positioning protrusion 37 is inserted into the positioning recess 23 of the operating body 10, and the tip side of the positioning protrusion 37 contacts the side surface in the positioning recess 23, thereby preventing the rattling in the rotation direction.

  The dustproof / splashproof member (dustproof / splashproof sheet) 50 is formed by molding an elastic material (silicon rubber in this example) into a substantially flat plate shape. The central portion of the dust-proof and drip-proof member 50 is a protrusion 51 that protrudes upward in a truncated cone shape, and a circular concave portion on the lower surface side is a switch contact storage portion 53. On the inner bottom surface (the lower surface of the protruding portion 51) of the switch contact storage portion 53, small projecting switch contact pressing portions 55 and 57 are formed at the center thereof and at four places surrounding the center at equal intervals. ing. The switch contact pressing portion 55 is provided at a position facing the operating portion 35 of the operation knob 30, and the four switch contact pressing portions 57 are provided at positions facing the operating portions 13 of the operating body 10. I have. On the other hand, at a portion surrounding the outer periphery of the dust-proof and drip-proof member 50, a protruding portion (wall portion) 59 protruding upward so as to surround the rectangular shape is formed. The upper end surface of the protruding portion 59 has a flat shape, and in this embodiment, serves as an outer case contact portion 59a. Outside the protrusion 51 of the dust-proof and drip-proof member 50, an insertion portion 61 composed of four circular small holes is formed circumferentially at regular intervals on the inner surface of the protrusion 59. Each of the insertion portions 61 is substantially the same as the outer diameter of each of the base insertion portions 17b and smaller than the outer diameter of the fixed portion main body 17a at a position facing each of the base insertion portions 17b of the operating body 10. Is formed. A recess 63 is formed between the protrusion 51 and the protrusion 59 of the dust-proof and drip-proof member 50. In this embodiment, a rubber material is used as the dust-proof and drip-proof member 50, but it may be configured using other various elastic materials.

  The switch contact fixing sheet 70 is formed by forming a flexible resin film into a disk shape, and has an adhesive layer formed on the lower surface thereof. The outer diameter of the switch contact fixing sheet 70 is formed to cover all the switch contacts 93 and 95 provided on the switch board 90 described below.

  The switch substrate 90 has one central switch contact 93 and four peripheral switch contacts 95 arranged at equal intervals so as to surround the central switch contact 93 on a synthetic resin film 91 having flexibility. It is configured. Each of the switch contacts 93 and 95 is configured by placing contact plates 93a and 95a made of a substantially dome-shaped elastic metal plate on a contact pattern (not shown) formed on the synthetic resin film 91. The central switch contact 93 is installed at a position facing the operating unit 35 of the operation knob 30, and each peripheral switch contact 95 is installed at a position facing each operating unit 13 of the operating body 10. On the other hand, an insertion portion 97 composed of four small holes is formed at a position surrounding the switch contacts 95 of the synthetic resin film 91. Each insertion portion 97 is formed at a position opposed to each base insertion portion 17b of the operating body 10 with a size substantially the same as the outer diameter of each base insertion portion 17b and smaller than the outer diameter of the fixed portion main body 17a. Have been. Although a flexible switch substrate is used as the switch substrate 90 in this embodiment, a hard switch substrate may be used.

  The base 110 is made of a hard plate, and in this embodiment, is made of a metal plate, and has an insertion portion 111 formed of four small holes at a predetermined position. Each of the insertion portions 111 is formed at a position facing each of the base insertion portions 17b of the operating body 10 with a size substantially the same as the outer diameter of each of the base insertion portions 17b and smaller than the outer diameter of the fixed portion main body 17a. Have been. The material of the base 110 is not limited to a metal plate, and may be configured using other various materials such as a synthetic resin plate. When a hard switch substrate is used as the switch substrate 90, the base 110 may be omitted. In this case, the hard switch substrate also serves as the base.

  To assemble the multi-directional pressing switch 1, first, a switch contact fixing sheet 70 is pasted on the upper surface of the switch substrate 90 so as to cover all the switch contacts 93 and 95, and the respective contact plates 93a and 95a are combined. It is fixed on the resin film 91.

  Then, the operation knob 30 is installed on the lower surface side of the knob holding portion 11 of the operating body 10, and at that time, the knob portion 33 is inserted into the knob insertion hole 19 so as to project to the upper surface side of the knob holding portion 11. At this time, the upper surface of the knob base 31 is in contact with the lower side of the protrusion 21 to restrict the upward movement of the operation knob 30. Further, as described above, the four positioning projections 37 of the operation knob 30 are inserted into the positioning recesses 23 of the operating body 10, and the tip sides of the positioning projections 37 abut against the side surfaces in the positioning recesses 23, thereby rotating in the rotation direction. Prevent rattling.

  Next, a dust-proof and drip-proof member 50, a switch board 90 to which the switch contact fixing sheet 70 is attached, and a base 110 are installed on the lower surface side of the operating body 10 to which the operation knob 30 is attached. , Each base insertion portion 17b of the operating body 10 is inserted into each insertion portion 61 of the dustproof and drip-proof member 50, each insertion portion 97 of the switch board 90, and an insertion portion 111 of the base 110, and The tip of each base insertion portion 17b protruding from the lower surface of the base is thermally caulked and fixed. Thus, the assembly of the multi-directional pressing switch 1 is completed. Note that the above assembling procedure is one example, and it goes without saying that the assembling may be performed using other various assembling procedures.

  Then, when the knob 33 of the operation knob 30 is pressed in a downward direction, only the operation knob 30 is lowered with respect to the knob holding portion 11 of the operating body 10, and the operation portion 35 is a switch of the dustproof drip-proof member 50. The back side of the contact pressing portion 55 is pressed, whereby the switch contact pressing portion 55 descends to press the center switch contact 93, and the contact plate 93a is inverted to turn on the switch. When the pressing on the knob 33 is released, the contact plate 93a automatically returns to its original shape by its elastic return force, and its switch is turned off.

  Next, when the knob 33 of the operation knob 30 is swung in a direction (for example, the direction B in FIG. 4) in which one of the operation units 13 of the operating body 10 is located, the operation knob 30 and the operating body 10 are rotated. Of the dustproof and drip-proof member 50 presses the back side of the switch contact pressing portion 57, whereby the switch contact pressing portion 57 descends. Then, the peripheral switch contact 95 is pressed, the contact plate 95a is inverted, and the switch is turned on. When the swing of the knob portion 33 is released, the operation knob 30 and the knob holding portion 11 return to the original state by the elastic restoring force of the contact plate 95a and the elastic restoring force of the hinge portion 15 bent by the swing. It automatically returns to its shape and its switch turns off.

  As described above, the multi-directional push switch 1 includes the operation knob 30, the operating body 10 that swings integrally with the swing of the operation knob 30, and holds the operation knob 30 so as to independently move up and down, A central switch contact 93 installed on the lower surface side of the operation knob 30 and operated by the vertical movement of the operation knob 30, and a peripheral switch contact 95 installed on the lower surface side of the operating body 10 and operated by the swing of the operating body 10 And a dustproof and drip-proof member 50 that covers the central switch contact 93 and the peripheral switch contact 95 as a whole, and on which the operation knob 30 and the operating body 10 are installed. In this configuration, the central switch contact 93 is operated, and the peripheral switch contact 95 is operated by the operating body 10 via the dust-proof and drip-proof member 50.

  In the multi-directional pressing switch 1 configured as described above, when liquid or the like enters from the upper surface side, the liquid or the like tends to enter the switch substrate 90 from each of the gaps. However, in the multi-directional pressing switch 1, the dustproof and drip-proof member 50 that covers the entirety of the central switch contact 93 and the peripheral switch contact 95 on the switch board 90 is installed. 95 is easily and reliably dustproofed and dripproof.

  The multi-directional push switch 1 is installed such that the upper part thereof is covered by an outer case 130 and the knob 33 protrudes from an opening 131 provided in the outer case 130, for example, as shown by a dashed line in FIG. Is done. At this time, as shown in FIG. 4, the tip side (lower side) of the side wall portion 133 protruding in a rectangular cylindrical shape from the lower surface of the outer case 130 is connected to the outer case contact portion on the upper surface of the protrusion 59 of the dustproof and drip-proof member 50. If it is brought into contact with 59a, the liquid or the like that has entered from between the opening 131 and the knob portion 33 passes through the projecting portion 59 of the dust-proof and drip-proof member 50 and enters the lower surface side, that is, the inside of the device. Can be prevented. The liquid or the like entering from the opening 131 accumulates in the concave portion 63 between the protrusion 51 and the protrusion 59 of the dust-proof and drip-proof member 50 and does not move from this position. The liquid evaporates, and the dust accumulates in the concave portion 63 as it is. That is, the projecting portion 59 also has a role of a breakwater for preventing liquid or the like from flowing out of the dust-proof and drip-proof member 50. Note that the dustproof and drip-proof member 50 is not provided with the protruding portion 59, the outer dimensions are reduced to the inside of the protruding portion 59, and the tip side (lower side) of the side wall portion 133 of the outer case 130 is connected to the side wall portion 133. When the switch contact fixing sheet 70 (or the switch board 90) is configured to directly contact the switch contact fixing sheet 70 (or the switch board 90) which is spread to below, the elasticity (such as the dustproof and dripproof member 50) is applied to the switch contact fixing sheet 70 (or the switch board 90). Since there is no rubber elasticity, there is a possibility that a gap may be formed between the contact surfaces of the two, and there is a possibility that it is not possible to maintain a reliable sealing property. Accordingly, if the outer peripheral portion of the dust-proof and drip-proof member 50 (not necessarily projecting like the projecting portion 59 and may remain in a flat shape) is elastically contacted with the front end side of the side wall portion 133 of the outer case 130, it is ensured. Hermeticity can be maintained, which is preferable.

  In the multi-directional pressing switch 1, the central switch contact 93 and the peripheral switch contact 95 are mounted on the base 110, and the operating body 10 is fixed to the base 110 by inserting the dustproof and dripproof member 50. In other words, the dustproof and drip-proof member 50 is fixed by the knob holding portion 11 of the operating body 10 and the fixing portion 17 provided around the operating portion 13. The displacement of the installation position of the dust-proof and drip-proof member 50 with respect to the table 110 can be reliably prevented. At the same time, since the knob holding section 11 and the operating section 13 are connected to the fixing section 17 by the hinge section 15, the swing of the knob holding section 11 and the operating section 13 can be performed easily and reliably. There is no need to prepare another component for swinging the operation unit 11 and the operation unit 13, and the configuration can be simplified.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications may be made within the scope of the claims and the technical idea described in the specification and the drawings. It 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 effects of the present invention are exhibited. For example, in the above embodiment, the number of the peripheral switch contacts is four, but may be one or a plurality other than four. Also, various modifications can be made to the shape of the dust-proof and drip-proof member that covers the entire central switch contact and the peripheral switch contact. In addition, the above descriptions can be combined with each other as long as there is no contradiction in the purpose, the configuration, and the like. In addition, even if a part of the above description and the contents of each drawing can be an independent embodiment, an embodiment of the present invention is one embodiment combining the above description and each drawing. However, the present invention is not limited to this.

DESCRIPTION OF SYMBOLS 1 Multi-directional press switch 10 Operating body 11 Knob holding part 13 Operating part 15 Hinge part 17 Fixed part 30 Operation knob 50 Dustproof / splashproof member 70 Switch contact fixing sheet 90 Switch board 93 Central switch contact 95 Peripheral switch contact 110 Base

Claims (3)

Operation knob,
An operating body that swings integrally with the swing of the operation knob and holds the operation knob so as to move up and down independently;
A central switch contact that is installed on the lower surface side of the operation knob and is operated by vertical movement of the operation knob;
A peripheral switch contact that is installed on the lower surface side of the operating body and is operated by swinging of the operating body;
A dust-proof and drip-proof member that covers the entire central switch contact and the peripheral switch contact and installs the operation knob and the operating body thereon;
With
A multi-directional pressing switch for operating the central switch contact via the dustproof and drip-proof member by the operation knob, and operating the peripheral switch contact via the dustproof and drip-proof member by the operating body; . The multi-directional pressing switch according to claim 1, wherein
The central switch contact and the peripheral switch contact are mounted on a base,
The multi-directional pressing switch, wherein the operating body is fixed to the base through the dust-proof and drip-proof member. The multi-directional press switch according to claim 1 or 2,
The operating body is
A knob holding unit that holds the operation knob so as to be vertically movable,
An operation unit installed at a position around the knob holding unit and operating the peripheral switch contact;
A fixing unit that is installed around the knob holding unit and the operation unit, and is fixed to the base through the dustproof and dripproof member,
A hinge portion for swingably connecting the knob holding portion and the operating portion to the fixed portion;
A multi-directional pressing switch characterized by comprising:

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