JP5287280B2 - Remote control transmitter - Google Patents

Description

  The present invention relates to a remote control transmitter mainly used for remote control of various electronic devices.

  In recent years, remote control transmitters that remotely control various electronic devices such as video, audio, and air conditioning equipment have been used in various usage situations such as living rooms and in the car, even if drinking water etc. overflows somewhat in the remote control transmitter, What can perform reliable operation is required.

  Such a conventional remote control transmitter will be described with reference to FIGS.

  4 is a cross-sectional view of a conventional remote control transmitter, and FIG. 5 is an exploded perspective view thereof. In FIG. 4, 1 is a substantially box-shaped upper case made of insulating resin, 2 is an operating body such as rubber, and the operating body 2 is provided with a plurality of operation portions 2A connected to each other by a substantially dome-shaped thin portion below, and the upper surfaces of the plurality of operation portions 2A can be moved up and down from a plurality of opening holes on the upper surface of the upper case 1. It protrudes.

  Reference numeral 3 denotes a wiring board in which a plurality of wiring patterns (not shown) are formed on the upper and lower surfaces. The operating body 2 is placed on the upper surface, and the protrusions provided on the outer peripheral edge of the operating body 2 are provided. It is sandwiched between the wiring board 3 and the lower surface of the upper case 1.

  Further, a plurality of fixed contacts 3A such as carbon are provided on the upper surface of the wiring board 3, and the fixed contacts 3A have a predetermined gap from a movable contact (not shown) such as carbon formed on the lower surface of the operation portion 2A. A plurality of switch contacts 4 are formed to face each other.

  Further, a transmission means 5 such as a light emitting diode and a control means 6 such as a microcomputer are mounted on the upper and lower surfaces of the wiring board 3, respectively, and a display such as a liquid crystal display is connected to the front portion via an elastic material connection body 7. A body 8 is placed, and a translucent film sheet 9 is attached to the upper case 1 surface above the display body 8.

  Reference numeral 10 denotes a battery connecting electrode made of metal wire, which is fixed to the lower surface of the rear portion of the wiring board 3 so as to face each other with a predetermined interval.

  Reference numeral 11 denotes a lower case made of an insulating resin having a substantially box shape with an upper opening. A plurality of support bosses 11A extending in the longitudinal direction in the vicinity of both side walls of the inner bottom surface and extending in the width direction on both side surfaces of the support boss 11A The rib 11B is formed, and the wiring board 3 is supported on the support boss 11A.

  Furthermore, 11C is a battery housing portion in which a space is formed so as to protrude upward from the lower surface of the lower case 11, and the electrodes 10 from above are provided in a plurality of openings 11D provided on both longitudinal sides of the upper surface of the battery housing portion 11C. In addition to the extension, a storage portion 11E is formed on the rear side of the battery storage portion 11C via a partition wall (not shown) and protruding upward from the lower surface of the lower case 11.

  Reference numeral 12 denotes a battery lid made of an insulating resin, which covers the battery housing portion 11C of the lower case 11, and has a substantially U-shaped engagement portion 12A on the rear side locked and held in the housing portion 11E. .

  Further, on both inner sides in the width direction of the lower case 11, locking portions 11 </ b> F projecting inward are fitted to the holding portions 1 </ b> A cut out inwardly on the outer surface of the upper case 1, so that the upper case 1 and the lower case 11 are positioned, and the upper case 1 and the lower case 11 are fixed by a plurality of screws 13 to constitute a remote control transmitter.

  In the above configuration, when a predetermined operation portion 2A protruding from the upper surface of the upper case 1 is pressed, the operation portion 2A moves downward, and the movable contact on the lower surface comes into contact with the fixed contact 3A. In accordance with the electrical contact / separation, the control means 6 transmits an infrared remote control signal from the transmission means 5 to the electronic device, and for example, the air conditioner is turned on / off by remote control. .

  When such a remote control transmitter is operated or placed on a desk, for example, liquid such as drinking water accidentally overflows into the remote control transmitter and the operation portion 2A of the upper case 1 protrudes. Even when the opening, the holding portion 1A where the upper case 1 and the lower case 11 are positioned, etc. are wetted, the protruding portion on the outer peripheral edge of the rubber operating body 2 is formed between the wiring board 3 and the lower surface of the upper case 1. The liquid is prevented from flowing into the wiring board 3 and the lower case 11 from the outer peripheral edge of the operation body 2 by being sandwiched between them.

  However, when liquid enters the inside of the lower case 11 from the gap of the holding portion 1A of the upper case 1, this may accumulate on the bottom surface between the plurality of ribs 11B located on the side of the battery storage portion 11C. It was a thing.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2005-174628 A

  However, in the above-described conventional remote control transmitter, when liquid such as drinking water enters the remote control transmitter, the liquid accumulated between the plurality of ribs 11B is operated when holding the remote control transmitter in hand, When a large amount of liquid enters and accumulates, the electrode 10 of the battery storage unit 11C in the vicinity enters the battery storage unit 11C through the opening 11D from which the electrode 10 extends, and between the batteries (not shown) or between the battery and the electrode 10. There was a problem that these contacts may become unstable and the contact may become unstable.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a remote control transmitter that can discharge liquid that has entered the remote control transmitter to the outside with a simple configuration and that is reliable in operation. And

In order to achieve the above object, the present invention has a substantially box-shaped upper case and a substantially box-shaped upper opening, and a space is formed so as to protrude upward from the lower surface in one direction from a substantially middle point in the longitudinal direction. A battery housing portion, a curved portion that descends in one direction with the substantially middle as a vertex is formed on the bottom surface on both sides of the battery housing portion, and a plurality of ribs extending in the width direction are erected, A lower case mounted on the lower surface, a locking portion protruding inward in the width direction in one direction from the substantially middle point of the lower case, and a fitting portion corresponding to the locking portion In accordance with the electrical contact / separation of the switch contact, the holding part that is notched inwardly on the outer surface of the upper case, the switch contact that performs electrical contact / separation by operation of the operating body protruding on the upper surface of the upper case, Comprising a control means for transmitting a remote control signal from the transmission means. To form a notch in the rib around the battery housing portion of the scan reaches the bottom surface, provided with a through hole penetrating to the outside on the bottom of one direction in the vicinity of the end portion of the curved portion of the lower case Even if liquid such as drinking water enters the remote control transmitter from the gap between the holding part of the upper case and the locking part of the lower case, the liquid between the ribs is notched in the rib. Since it flows through the battery, flows outward from the through-hole, and does not enter the battery compartment, it prevents liquid from adhering to the contact part between the batteries and between the battery and the electrode, and disturbs these contacts. Therefore, it is possible to obtain a remote control transmitter that can be reliably operated.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that a liquid that has entered the remote control transmitter can be discharged to the outside with a simple configuration and a remote control transmitter that can be reliably operated can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure demonstrated in the term of background art, and detailed description is simplified.

(Embodiment)
FIG. 1 is a cross-sectional view of a remote control transmitter according to an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, in which 1 is a substantially box-shaped upper case made of an insulating resin such as polystyrene or ABS, 2 is an operation body such as silicone rubber or elastomer, and the operation body 2 is provided with a plurality of operation parts 2A connected and formed by a substantially dome-shaped thin part below, and the upper surfaces of the operation parts 2A are The upper case 1 protrudes from a plurality of opening holes on the upper surface so as to be movable up and down.

  Reference numeral 3 denotes a wiring board in which a plurality of wiring patterns (not shown) are formed on the upper and lower surfaces. The operating body 2 is placed on the upper surface, and the protrusions provided on the outer peripheral edge of the operating body 2 are provided. It is sandwiched between the wiring board 3 and the lower surface of the upper case 1.

  A plurality of fixed contacts 3A such as carbon are provided on the upper surface of the wiring board 3. The fixed contacts 3A have a predetermined gap from a movable contact (not shown) such as carbon formed on the lower surface of each operation portion 2A. A plurality of switch contacts 4 are formed to face each other.

  Further, a transmission means 5 such as a light emitting diode and a control means 6 such as a microcomputer are mounted on the upper and lower surfaces of the wiring board 3, respectively, and a display such as a liquid crystal display is connected to the front portion via an elastic material connection body 7. A body 8 is placed, and a translucent film sheet 9 is attached to the upper surface of the upper case 1 above the display body 8.

  Reference numeral 10 denotes a battery connecting electrode made of metal wire, which is opposed to the rear lower surface of the wiring board 3 with a predetermined gap, and is fixed to the wiring pattern of the wiring board 3 by soldering or the like.

  Reference numeral 21 denotes a lower case made of an insulating resin such as polystyrene or ABS, which is long in the front-rear direction of the upper opening, and a plurality of support bosses 21A along the longitudinal direction in the vicinity of both side walls of the inner bottom surface and the support bosses A plurality of ribs 21B extending in the width direction are formed on both side surfaces of 21A, and the wiring board 3 is supported on the support boss 21A.

  Further, 21C is a battery housing portion in which a space is formed so as to protrude upward from the lower surface of the lower case 21, and the electrodes 10 are provided from above to a plurality of openings 21D provided on both sides in the longitudinal direction of the upper surface of the battery housing portion 21C. A storage portion 21E that extends and protrudes upward from the bottom surface of the lower case 21 is formed on the rear side of the battery storage portion 21C via a partition wall (not shown).

  In addition, on the bottom surface of the lower case 21, curved portions 21 </ b> F that descend in the front-rear direction are formed on both sides of the battery storage portion 21 </ b> C that protrudes upward, with the approximate middle in the front-rear direction as a vertex.

  The ribs 21B on the inner side of the support boss 21A disposed around the battery storage portion 21C are formed with notches 21G reaching the bottom surface between the ribs 21B and the battery storage portion 21C.

  Further, in the vicinity of the lowermost portion of the rear portion of the curved portion 21F, a side opening portion 21H formed on both sides of the accommodating portion 21E and a through hole 21J that extends downward and continues therewith are provided.

  In other words, on the bottom surface of the lower case 21, a notch 21G is provided in the rib 21B extending in the width direction around the battery storage portion 21C, and a through hole 21J is provided in the storage portion 21E isolated from the battery storage portion 21C. Even if the liquid enters the bending portion 21F, the liquid flows through the plurality of cutout portions 21G along the inclination of the bending portion 21F, and is discharged to the outside of the lower surface of the lower case 21 through the through holes 21J. Is formed.

  Reference numeral 12 denotes a battery lid made of an insulating resin, which covers the battery storage portion 21C of the lower case 21 and has a substantially U-shaped engagement portion 12A on the rear side locked and held in the storage portion 21E. .

  Further, on both inner sides in the width direction of the lower case 21, locking portions 21 </ b> K protruding inward are fitted to the holding portions 1 </ b> A cut out inwardly on the outer surface of the upper case 1, The case 1 and the lower case 21 are positioned, and the upper case 1 and the lower case 21 are fixed by a plurality of screws 13 via a plurality of fastening bosses 21L in the vicinity of the inner periphery of the lower case 21, thereby constituting a remote control transmitter. Has been.

  In the above configuration, when a predetermined operation portion 2A protruding from the upper surface of the upper case 1 is pressed, the operation portion 2A moves downward, and the movable contact on the lower surface comes into contact with the fixed contact 3A. In accordance with the electrical contact / separation, the control means 6 transmits an infrared remote control signal from the transmission means 5 to the electronic device, and for example, the air conditioner is turned on / off by remote control. .

  In addition, when operating such a remote control transmitter or being placed on a desk, for example, liquid such as drinking water accidentally overflows the remote control transmitter, and the operation portion 2A of the upper case 1 protrudes. The opening, the holding portion 1A where the upper case 1 and the lower case 21 are positioned, etc. may get wet.

  However, at this time, since the protruding portion of the outer peripheral edge of the rubber operation body 2 is sandwiched between the wiring substrate 3 and the lower surface of the upper case 1, the liquid does not flow outward of the operation body 2, It does not enter the wiring board 3 or the lower case 21.

  Furthermore, in the present invention, even when the liquid enters the inside through the gap of the holding portion 1A of the upper case 1, as shown in the plan view of the main part of the lower case 21 in FIG. 3, the holding portion 1A and the locking portion 21K. After entering the bottom surface of the lower case 21 along the path indicated by the arrow, the liquid that has entered through the gap flows along the notch 21G between the rib 21B and the battery storage part 21C along the inclination of the curved part 21F, and flows. It is comprised so that it may discharge | emit to the outward of the lower surface of the lower case 21 from the through-hole 21J of the both sides of the accommodating part 21E.

  That is, in addition to liquid intrusion from above the upper case 1, a notch 21 </ b> G reaching the bottom surface is formed on the rib 21 </ b> B on the bottom surface of the lower case 21 for liquid intrusion from the side of the upper case 1 and the lower case 21. At the same time, by providing a through hole 21J penetrating outwardly on the lower surface of the lower case 21, it is possible to prevent these from adhering to the battery, the electrode 10, etc., and to perform a reliable operation.

  As described above, according to the present embodiment, the notches 21G reaching the bottom surface are formed in the plurality of ribs 21B erected in the width direction on the bottom surface of the lower case 21, and the bottom surface of the lower case 21 is penetrated outward. By providing the hole 21J, even if liquid such as drinking water enters the remote control transmitter, the liquid between the ribs 21B flows through the notch 21G of the rib and is discharged outward from the through hole 21J. Since the liquid does not enter the battery housing portion 21C, liquid does not adhere between the batteries or the contact portion between the battery and the electrode 10, and it is difficult for the contact to occur. It can be obtained.

  In the above description, a configuration in which a plurality of switch contacts 4 are formed by a plurality of fixed contacts 3A on the upper surface of the wiring board 3 and a movable contact on the lower surface of the operation portion 2A of the operating body 2 placed on the upper surface is described. However, on the fixed contact on the upper surface of the wiring board 3, a movable contact made of a conductive metal thin plate is mounted on the fixed contact, or a plurality of individual push switches are mounted on the wiring board 3, etc. The present invention can be implemented even in configurations using various switch contacts.

  The remote control transmitter according to the present invention has a simple configuration, can discharge the liquid that has entered the remote control transmitter to the outside, can be reliably operated, and is mainly useful for the operation of various electronic devices.

Sectional drawing of the remote control transmitter by one embodiment of this invention Exploded perspective view Main part plan view of the lower case Cross-sectional view of a conventional remote control transmitter Exploded perspective view

DESCRIPTION OF SYMBOLS 1 Upper case 1A Holding part 2 Operation body 2A Operation part 3 Wiring board 4 Switch contact 5 Transmission means 6 Control means 7 Connection body 8 Display body 9 Film sheet 10 Electrode 12 Battery cover 12A Engagement part 13 Screw 21 Lower case 21A Support boss 21B Rib 21C Battery storage part 21D Opening 21E Storage part 21F Curved part 21G Notch part 21H Side opening part 21J Through-hole 21K Locking part 21L Fastening boss

Claims (1)

A substantially box-shaped upper case, and a battery box having a substantially box shape with an upper opening and having a space formed so as to protrude upward from the lower surface in one direction from a substantially middle point in the longitudinal direction. a plurality of ribs extending in the width direction together with the curved portion descends in one direction on the bottom surface of a square of the substantially intermediate the vertex is formed is erected, and a lower case attached to a lower surface of the upper case, the lower case A locking portion projecting inwardly in the width direction in one direction from the substantially middle point of the upper portion, and a notch inwardly formed on the outer surface of the upper case so as to fit in correspondence with the locking portion A holding portion, a switch contact that is electrically connected / disconnected by operating the operating body protruding on the upper surface of the upper case, and a control device that transmits a remote control signal from the transmitting device according to the electrical contact / separation of the switch contact. , the rib around the battery housing portion of the lower case To form a notch reaching the bottom, remote control transmitter having a through hole penetrating to the outside on the bottom of one direction in the vicinity of the end portion of the curved portion of the lower case.

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