JP2006345484A - Transmitter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a transmitter attaining dustproof and waterproof performances and being small-sized. <P>SOLUTION: A transmitter 10 comprises: an approximately box-like upper case 1 of which a lower surface is open; an operation body 2 including an operating part 2a protruded from a through-hole 1F of the upper case 1 so as to be vertically movable and a linear part 2b; and a lower case 4 covering the lower opening surface of the upper case 1. A wiring board 3 is housed within a side wall 4a provided in the lower case 4, and the side wall 4a of the lower case 4 is brought into elastic contact with a lower surface of the operation body 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention mainly relates to a portable transmitter that remotely controls the locking and unlocking of an automobile door.

  In recent years, with the advancement of functions and diversification of automobiles, in addition to locking and unlocking doors directly using mechanical keys, locking and unlocking can be performed by portable transmitters using infrared rays and radio waves. More are being done remotely.

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

  FIG. 7 is a longitudinal sectional view of a conventional transmitter, FIG. 8 is an exploded perspective view thereof, in which 21 is a box-shaped upper case having an opening on the lower surface, 22 is an approximately dome-shaped product made of an elastic material such as rubber. In the operating body, an operating portion 22a provided on the upper surface of the operating body 22 protrudes from a through hole 21F provided on the upper side of the upper case 21 so as to be vertically movable.

  Reference numeral 23 denotes a wiring board disposed below the operating body 22, and this wiring board 23 has a wiring pattern (not shown) formed thereon, and a switch 23a that is operated by pressing the operating portion 22a at a predetermined position. In addition, a transmission circuit is formed by mounting an oscillator, a semiconductor, and the like.

  Reference numeral 24 denotes a lower case that covers the lower surface opening of the upper case 21, and the lower case 24 includes a claw portion 24a that holds the wiring board 23 on the upper surface, and a central hole 24E that communicates in the vertical direction.

  Note that a positive electrode 27a and a negative electrode 27b are connected to a wiring pattern (not shown) on the lower surface of the wiring board 23, and each electrode is disposed so as to be visible from the outside of the central hole 24E of the lower case 24. The coin-shaped battery 26 accommodated in the battery is formed so as to be detachable. The battery 26 has its outer periphery in contact with and held by the positive electrode 27a and its upper surface in contact with the negative electrode 27b.

  Reference numeral 25 denotes a lid made of an elastic material such as rubber. An annular convex portion 25a on the outer periphery of the lid 25 is fitted into an annular groove 24b of the lower case 24 so as to close the central hole 24E of the lower case 24. Is formed.

  Here, the operating body 22 is held and held between the upper case 21 and the lower case 24 by the hole 21a of the upper case 21 being locked to the protrusion 24c of the lower case 24, and its collar. A flange portion 22b is elastically contacted by a protrusion 24d of the lower case 24 toward the upper case 21.

  That is, the flange-shaped flange portion 22b that protrudes outward from the substantially dome-shaped outer shape of the operating body 22 is sandwiched between the upper case 21 and the lower case 24, and is elastically contacted so as to prevent dust and water from entering the wiring board 23. The transmitter 20 is configured to ensure the above.

  In the above configuration, when the operation portion 22a of the operation body 22 protruding from the upper surface of the upper case 21 is pushed down, the switch 23a is turned on by the lower surface of the operation portion 22a and the transmission circuit is activated to transmit infrared rays, radio waves, etc. Can be remotely controlled.

As prior art document information related to the invention of this application, for example, Patent Document 1 and Patent Document 2 are known.
JP-A-7-297265 Japanese Patent Laid-Open No. 9-8474

  However, in the conventional transmitter 20 described above, it is necessary to provide the operation body 22 with a flange-like flange portion 22b in order to ensure dustproofness and waterproofness into the wiring board 23. That is, since the outer shape becomes larger by the flange portion 22b protruding outward from the operation body 22, there is a problem that it is difficult to reduce the size of the transmitter 20.

  SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and provides a transmitter having a structure that eliminates a flange portion that has been limited in size and satisfies both dustproofness, waterproofness, and size reduction. For the purpose.

  In order to achieve the above object, the transmitter of the present invention has the following configuration.

  According to the first aspect of the present invention, the operating body is formed in a substantially flat plate shape, and the top of the side wall provided in the lower case is brought into elastic contact with the lower surface of the operating body, and the switch operated by the operating body is provided. It can be sealed in the space formed by the wiring board, the side wall and the operation body and eliminates the need for the flange portion of the operation body, which has been required in the past. It has the effect that a satisfactory transmitter can be obtained.

  The invention according to claim 2 is the invention according to claim 1, wherein the upper surface of the operating body is elastically contacted with the upper case, and dust and water from the through hole side of the upper case enter the space. It has the effect | action that it can prevent.

  The invention according to claim 3 is the invention according to claim 1, wherein the gap between the outer periphery of the side wall of the lower case and the inner periphery of the upper case is filled with a filler, which further enhances dust resistance and waterproofness. It has the effect of being able to.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, a support portion that contacts the wiring board is provided on the lower surface of the operating body, and more dustproof and waterproof can be achieved. Since the operating body can be self-supporting, it has the effect that it can be easily assembled.

  The invention according to claim 5 is the invention according to claim 4, wherein a concave portion is provided in the support portion, and a convex portion provided in the upper case is fitted into the concave portion, and the dustproof and waterproof properties are further improved. In addition, the operation body and the upper case can be assembled separately and can be assembled easily.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, the battery housing portion is formed by the lid and the lower case below the lower case, and the battery housed in the battery housing portion is formed by the lid body. It is pressed and has dust and water resistance, and has an effect that the impact of the battery caused by dropping or vibration of the transmitter can be absorbed by the lid.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that a dustproof property and a waterproof property can be achieved and a small transmitter can be obtained.

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

(Embodiment)
1 is a longitudinal sectional view of a transmitter according to an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is an exploded side view thereof, and in FIG. The upper case 2 is a substantially flat operating body, and the operating body 2 moves up and down from a through hole 1F provided in the upper case 1 with an operating portion 2a provided in a substantially inverted T shape on the upper surface from the straight portion 2b. Protrusively protruding.

  Here, the upper case 1 is a molded product of an insulating resin excellent in heat resistance such as ABS (acrylonitrile butadiene styrene resin) or PBT (polybutylene terephthalate resin).

  The operation body 2 is provided with a thin portion 2c between the base of the operation portion 2a made of insulating resin and the straight portion 2b made of silicon rubber or elastomer so that the pressing operation of the operation portion 2a is easy. Note that the operation portion 2a and the straight portion 2b of the operation body 2 may be integrally formed of the same rubber material.

  A wiring board 3 is arranged below the operation body 2. The wiring board 3 has a wiring pattern (not shown) formed thereon, and is pressed at a predetermined position by the lower surface of the operation unit 2a. In addition, a transmission circuit is formed by mounting an oscillator, a semiconductor, and the like.

  Reference numeral 4 denotes a lower case that covers the lower surface opening of the upper case 1. The lower case 4 is provided with a box-shaped side wall 4a extending upward, and the wiring substrate 3 is held by the claw portion 4b in the side wall 4a. In addition, a central hole 4E communicating in the vertical direction is provided.

  Note that a positive electrode 7a and a negative electrode 7b are connected to a wiring pattern (not shown) on the lower surface of the wiring board 3, and each electrode is disposed so as to be visible from the outside of the central hole 4E of the lower case 4, The battery 6 is formed so as to be detachable. The outer periphery of the battery 6 is in contact with and held by the positive electrode 7a, and the upper surface thereof is in contact with the negative electrode 7b.

  Reference numeral 5 denotes a lid made of an elastic material such as silicon rubber or elastomer. The lid 5 has an annular convex portion 5a provided on the outer periphery thereof pressed into an annular groove 4c of the lower case 4 so that the lower case 4 The central hole 4E is closed, a battery housing portion D is provided here, and the battery 6 can be pressed against the negative electrode 7b side by the protrusion 5b of the lid 5.

  Here, the battery 6 when mounted is held by a flat portion on the lower side of the positive electrode 7a formed in an L shape, and the positive electrode 7a is biased toward the negative electrode 7b side. However, in order to prevent the possibility that each electrode is deformed or worn due to an impact on the battery 6 due to the drop or vibration of the transmitter 10 and the continuity with the battery 6 is impaired, the lid 5 has its protrusions. The battery 6 is pressed against the negative electrode 7b side by the part 5b so that the impact on the battery 6 can be absorbed.

  In addition, the protrusion 4d of the lower case 4 is locked in the hole 1a opened to the lower side of the side surface of the upper case 1, so that the operating body 2 is sandwiched and held between the upper case 1 and the lower case 4, and The linear portion 2b of the operating body 2 is elastically contacted with the upper case 1 by the convex portion 4e formed on the side wall 4a of the case 4 so that the inside of the side wall 4a is sealed.

  Further, the upper surface of the linear portion 2b of the operating body 2 is brought into close contact with the upper case 1 by pressing by the side wall 4a of the lower case 4, and dust and water from the through hole 1F side of the upper case 1 enter the side wall 4a. Is preventing.

  That is, by forming the operation body 2 in a substantially flat plate shape, the outer dimensions thereof are reduced, and the operation body 2 is elastically contacted with the upper case 1 by the side wall 4a of the lower case 4, so that the wiring board 3 is formed. The transmitter 10 is configured so as to enhance dustproofness and waterproofness into the accommodated space H.

  In the above configuration, when the operation portion 2a of the operation body 2 protruding from the upper surface of the upper case 1 is pressed, the switch 3a is turned on by the lower surface of the operation portion 2a, the transmission circuit is activated, and infrared rays, radio waves, etc. are transmitted to the automobile. Thus, the door can be locked and unlocked by remote control.

  As described above, according to the present embodiment, the operating body 2 is formed in a substantially flat plate shape, and the operating body 2 is elastically contacted by the side wall 4a of the lower case 4 so that the flange protrudes outward from the operating body 2. Thus, the transmitter 10 can be obtained which can satisfy the requirements of ensuring the dustproof and waterproof properties and miniaturization at the same time.

  Further, the upper surface of the operation body 2 is elastically contacted with the upper case 1, and dust and water from the through hole side of the upper case 1 can be prevented from entering the space H.

  In the above description, the operation body 2 has been described as an elastic body made of a rubber material. However, a metal material having a spring property may be used instead of the rubber material, and as shown in FIG. The body 2 bends the peripheral edge of the straight portion 2b downward, forms an elastic bent portion 2c, and elastically contacts the side wall 4a of the lower case 4 with the bent portion 2c, thereby preventing dust from entering the space H. In addition to the properties and waterproofness, the effect of reducing the height can be obtained.

  Here, the operating body 2 shown in FIG. 4 is integrally formed so that a through hole is provided in the center of the straight portion 2b of the metal material, and the operation portion 2a of the rubber material is communicated with the lower surface through the through hole. .

  Further, as shown in FIG. 5, by filling the gap G between the outer periphery of the side wall 4 a of the lower case 4 and the inner periphery of the upper case 1, dustproofness and waterproofness can be further improved. The filler 8 is made of a thermosetting resin such as silicon resin, epoxy resin, unsaturated polyester resin, or acrylic resin such as thermoplastic resin.

  Further, as shown in FIG. 5, the wiring board 3 provided on the side wall 4 a of the lower case 4 shown in FIG. 1 is provided by providing a projecting support portion 2 e in contact with the wiring board 3 on the lower surface of the operating body 2. As a result, the claw portion 4b for holding can be made unnecessary, and assembly becomes easy.

  Further, as shown in FIG. 6, a concave portion 2 f is provided in the support portion 2 e that contacts the wiring substrate 3, and the convex portion 1 f of the upper case 1 is fitted into the concave portion 2 f. With this configuration, dustproofness and waterproofing can be achieved, and the assembly of the operation body 2 and the upper case 1 can be separately performed separately, so that the assembly becomes easier.

  Moreover, the battery housing part D is formed by the lid 5 and the lower case 4, and the battery 6 housed in the battery housing D is pressed by the protrusion 5 b of the lid 5, so that dust resistance and waterproofing are achieved. The lid 5 can absorb the impact of the battery 6 due to dropping or vibration of the transmitter.

  Although the above embodiment has been described as a transmitter for a vehicle, the present invention is not limited to this, and may be used for a remote control transmitter, a portable game machine, a mobile phone, or the like that remotely controls various electric devices. The same effect can be obtained.

  The transmitter according to the present invention has an effect of obtaining a transmitter that can be reduced in size by being dustproof and waterproof, and is useful mainly for a transmitter for a vehicle.

1 is a longitudinal sectional view of a transmitter according to an embodiment of the present invention. Exploded perspective view Exploded side view Longitudinal sectional view of operation body according to another embodiment Vertical sectional view of a transmitter according to another embodiment Vertical sectional view of a transmitter according to another embodiment Vertical section of a conventional transmitter Exploded perspective view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper case 1a Hole part 1F Through-hole 2 Operation body 2a Operation part 2b Straight part 2c Thin part 3 Wiring board 3a Switch 4 Lower case 4a Side wall 4b Claw part 4c Groove part 4d Projection part 4e Top part 4E Central hole 5 Lid 5a Convex part 5b Protrusion 6 Battery 7a, 7b Electrode D Battery storage G Gap H Space

Claims (6)

A substantially box-shaped upper case having a bottom opening with a through hole on the upper side, a substantially flat operation body having an operation part that protrudes up and down from the through hole of the upper case, and a lower part of the operation body. A wiring board provided with a switch and a transmission circuit operated by the operation unit, and a lower case covering the lower surface opening of the upper case,
A transmitter in which a box-shaped side wall extending upward is provided in the lower case, the wiring board is housed in the side wall, and the top of the side wall is elastically contacted with the lower surface of the operating body. The transmitter according to claim 1, wherein an upper surface of the operation body is elastically contacted with the upper case. The transmitter according to claim 1, wherein a gap is provided between the outer periphery of the side wall and the inner periphery of the upper case, and the gap is filled with a filler. The transmitter according to claim 1, wherein a support portion that contacts the wiring board is provided on a lower surface of the operation body. The transmitter according to claim 4, wherein a concave portion is provided in the support portion of the operating body, and a convex portion provided in the upper case is fitted into the concave portion. An opening is provided in the lower case, and further includes a lid that closes the opening. The lid and the lower case form a battery housing portion, and the battery housed in the battery housing portion is formed by the lid body. The transmitter according to claim 1, wherein the transmitter is pressed.

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