JP5176615B2 - 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, as various electronic devices such as video, audio, and air conditioning have become more sophisticated, remote control transmitters that remotely operate these electronic devices can be operated in a variety of ways while providing a display such as a liquid crystal panel to visually check the operation status. There is an increasing number of things that can be done.

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

  3 is a cross-sectional view of a conventional remote control transmitter, and FIG. 4 is an exploded perspective view thereof. In FIG. 3, 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. Protruding.

  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 a plurality of fixed contacts such as carbon are provided on the upper surface of the wiring board 3. 4A is provided, and the fixed contact 4A is opposed to the movable contact 4B made of carbon or the like formed on the lower surface of each operation portion 2A with a predetermined gap therebetween to form a plurality of switch contacts 4.

  Further, 5 is a substantially flat display body such as a liquid crystal panel, and 6 is an elastic conductive connection body made of conductive rubber. The elastic conductive connecting member 6 is placed in elastic contact between the lower surface of the side end portion and the upper surface of the wiring board 3 in a slightly bent state.

  A plurality of electrodes 5A are formed on the lower surfaces of the left and right side end portions of the display body 5, and a plurality of conductive patterns 7 are formed on the upper surface of the wiring board 3 so as to face the electrodes 5A of the display body 5. When the upper and lower surfaces of the plurality of conductive portions 6A of the elastic conductive connection body 6 are in elastic contact with each other, the corresponding electrodes 5A and the conductive patterns 7 are electrically connected to each other.

  On the upper and lower surfaces of the wiring board 3, a transmitter 9 for transmitting a remote control signal such as a light emitting diode, a microcomputer connected to the transmitter 9, the display body 5, a plurality of switch contacts 4, etc. via a wiring pattern, etc. A control unit 10 is formed.

  Reference numeral 11 denotes a screw, and reference numeral 12 denotes a lower case made of an insulating resin. The wiring board 3 is fixed to the mounting bosses 1B and 1C on the lower surface of the upper case 1 disposed on the outer side of the display body 5 by the screw 11. At the same time, the lower case 12 covers the lower part of the upper case 1 to constitute a remote control transmitter.

  In the above configuration, when the remote control transmitter is pointed at the electronic device and the operation unit 2A is pressed, the movable contact 4B on the lower surface of the operation unit 2A comes into contact with the plurality of fixed contacts 4A, and the electrical contact of the switch contact 4 is made. In response to the electrical contact / separation, the control unit 10 transmits an infrared remote control signal from the transmission unit 9 to the electronic device, and, for example, increase / decrease of the set temperature of the air conditioner is performed by remote operation.

  Then, by visually checking the setting states of various functions such as the set temperature, the air volume, and the wind direction displayed on the display unit 5 on the display unit 1A of the remote control transmitter, the predetermined operation unit 2A and the like are operated as necessary. Thus, the electronic device is configured to switch to the intended setting.

  In such a remote control transmitter, the display body 5 is generally a rectangle that is long in the front-rear direction when performing multi-function operation display, and both left and right ends of the display body 5 are in the left-right direction of the upper case 1. Because of the restriction of the width of the upper case 1, it is arranged close to the inner surface of the upper case 1, so that it is difficult to provide a space for fixing the wiring board 3 directly to the upper case 1 at the intermediate position of the display body 5. In addition, a plurality of mounting bosses 1B and 1C are disposed on the lower surface of the upper case 1 outside the display body 5 in the front-rear direction, and the wiring board 3 is screwed to the mounting bosses 1B and 1C.

  Therefore, the distance between the screw fixing positions in the front-rear direction of the wiring board 3 is large, and the wiring board 3 fixed to the upper case 1 with the display body 5, the elastic conductive connection body 6, and the spacer 8 interposed therebetween has an ambient temperature, humidity, etc. Depending on the use conditions, warping in the downward direction of the wiring board 3 due to expansion and contraction of the upper case 1, the lower case 12, the wiring board 3, etc. occurs. Since the elastic contact force with the display body 5 is small, these electrical connections tend to be unstable.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2004-138882 A

  However, in the conventional remote control transmitter, the wiring board 3 is screwed and attached to the plurality of mounting bosses 1B and 1C disposed on the lower surface of the upper case 1 outside the display body 5 in the front-rear direction. Since the interval between the fixed positions is large, the wiring board 3 is warped downward depending on the use conditions such as ambient temperature and humidity, and the elastic contact force between the elastic conductive connection body 6 and the wiring board 3 or the display body 5 is small. Therefore, there has been a problem that these electrical connections tend to be unstable.

  The present invention solves such a conventional problem, and provides a remote control transmitter capable of suppressing the warpage of the wiring board, ensuring the electrical connection between the display body and the wiring board, and capable of stable display. The purpose is to provide.

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

According to the first aspect of the present invention, a substantially rectangular parallelepiped reinforcing body made of an insulating resin is disposed between a substantially flat display body and a wiring board, and a lower surface of the side end portion of the display body and the wiring board. The wiring board is fixed to the case with screws, outside the longitudinal direction of the display body, and the wiring board is fixed to the case. The wiring board is fixed to the reinforcing body with screws at least at substantially the middle position in the longitudinal direction and inside the elastic conductive connecting body, and the wiring board is brought into contact with and fixed to the bottom surface of the reinforcing body. The remote control transmitter is configured, and the wiring board is fixed to the bottom surface of the substantially rectangular parallelepiped reinforcing body, so that the wiring board is supported by the rigid reinforcing body on the bottom surface of the wiring board in the downward direction. The warpage of the Because the reinforcing body is adjacent to the connection body, the elastic contact force between the wiring board and the display body by the elastic conductive connection body is prevented in order to prevent the elastic conductive connection body from warping or falling down slightly in the vertical direction. It has an effect that a remote control transmitter can be obtained which is kept almost constant, has a reliable electrical connection between the wiring board and the display body, and can display stably.

  The invention according to claim 2 is the invention according to claim 1, wherein the reinforcing body made of insulating resin is integrally formed by arranging a plurality of crosspieces in a lattice shape within a substantially frame-like frame portion, The reinforcing body can easily have a desired rigidity, can be made light in weight with less material used, and has an effect that the reinforcing body itself is less warped and can be easily formed into a flat shape.

  As described above, according to the present invention, there is an advantageous effect that it is possible to realize a remote control transmitter capable of suppressing the warpage of the wiring board, ensuring the electrical connection between the display body and the wiring board and capable of stable display. can get.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2.

  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 of the same, and in FIG. 1, 1 is a substantially box-shaped bottom opening made of an insulating resin such as polystyrene or ABS. The upper case 2 is an operation body such as rubber or elastomer, and the operation body 2 is provided with a plurality of operation portions 2A connected to each other by a substantially dome-shaped thin portion below, and an upper surface of the plurality of operation portions 2A. However, it protrudes from a plurality of opening holes on the upper surface of the upper case 1 so as to be movable up and down.

  Reference numeral 3 denotes a wiring board such as paper phenol or glass epoxy, and a plurality of wiring patterns (not shown) are formed on the upper and lower surfaces by copper foil or the like. A plurality of fixed contacts 4A made of carbon or the like are provided on the upper surface of the substrate 3, and the fixed contacts 4A face a plurality of movable contacts 4B made of carbon or the like formed on the lower surface of each operation portion 2A with a predetermined gap therebetween. A switch contact 4 is formed.

  Reference numeral 5 denotes a substantially flat display body such as a rectangular liquid crystal panel that is long in the front-rear direction. Reference numeral 6 denotes a conductive portion 6A, which is a conductive layer in which carbon or the like is dispersed in silicone rubber or the like, and an insulating layer of silicone rubber at a predetermined interval. The display body 5 is disposed below the display portion 1A of the case 1 and is elastically conductive between the lower surfaces of the left and right side ends of the display body 5 and the upper surface of the wiring board 3. The connecting body 6 is placed in elastic contact in a slightly bent state.

  A plurality of electrodes 5A are formed on the lower surfaces of the left and right side edges of the display body 5, and a plurality of conductive patterns 7 are formed on the upper surface of the wiring board 3 so as to face the electrodes 5A of the display body 5. When the upper and lower surfaces of the plurality of conductive portions 6A of the elastic conductive connection body 6 are in elastic contact with each other, the corresponding electrode 5A and the conductive pattern 7 are electrically connected.

  Reference numeral 20 denotes a substantially rectangular parallelepiped reinforcing body made of an insulating resin such as polystyrene or ABS, and a plurality of crosspieces 20B are arranged in a lattice shape in a substantially frame-like frame portion 20A and are integrally formed. A mounting hole 20 </ b> C is provided in the vicinity of the left and right ends of the substantially intermediate position.

  In addition, the reinforcement body 20 can be provided with a desired rigidity as a reinforcement function relatively easily by integrally forming a plurality of crosspieces 20B in a lattice shape in a frame portion 20A having a substantially frame shape. In addition, compared with the case of forming with a simple plate, the material used can be reduced and the weight can be reduced.

  The reinforcing body 20 is housed in the left and right elastic conductive connectors 6 in a state where the left and right side frame portions 20A are in contact with each other or close to each other, and is slightly bent in the vertical direction. Prevents warping and falling.

  On the upper and lower surfaces of the wiring board 3, a transmitter 9 for transmitting a remote control signal such as a light emitting diode, a microcomputer connected to the transmitter 9, the display body 5, a plurality of switch contacts 4, etc. via a wiring pattern, etc. A control unit 10 is formed.

  The wiring board 3 is mounted on the upper case 1 with screws 11 in a state where the operation body 2, the reinforcing body 20, the elastic conductive connection body 6, the display body 5, and the like are arranged at predetermined positions inside the upper case 1. It is fixed to the reinforcing body 20.

  That is, a plurality of mounting bosses 1B and 1C are formed to protrude from the lower surface of the upper case 1 outside the display body 5 in the front-rear direction, and the wiring board 3 has through holes 3A and 3B corresponding to the mounting bosses 1B and 1C. A through hole 3C corresponding to the mounting hole 20C of the reinforcing body 20 is formed at a substantially intermediate position between the holes 3A and 3B, and the wiring board 3 is fixed to the mounting bosses 1B and 1C by screws 11 inserted through the through holes 3A and 3B. And is fixed to the mounting hole 20 </ b> C of the reinforcing body 20 with a screw 11 inserted through the through-hole 3 </ b> C.

  Reference numeral 12 denotes a lower case made of an insulating resin. The lower case 12 covers the lower side of the upper case 1 to which the wiring board 3 is mounted, thereby forming a remote control transmitter.

  In the above configuration, when the remote control transmitter is pointed at the electronic device and the operation unit 2A is pressed, the movable contact 4B on the lower surface of the operation unit 2A comes into contact with the plurality of fixed contacts 4A, and the electrical contact of the switch contact 4 is made. In response to the electrical contact / separation, the control unit 10 transmits an infrared remote control signal from the transmission unit 9 to the electronic device, and, for example, increase / decrease of the set temperature of the air conditioner is performed by remote operation.

  Then, by visually checking the setting states of various functions such as the set temperature, the air volume, and the wind direction displayed on the display unit 1A of the remote control transmitter, the predetermined operation unit 2A and the like are operated as necessary. Thus, the electronic device is configured to switch to the intended setting.

  In such a remote control transmitter, when the surroundings are used under a use condition such as high temperature or low temperature, or high humidity or dry state, in addition to the elastic contact by the upper elastic conductive connection body 6, an insulating resin There is a strong tendency for the wiring board 3 to warp downward due to expansion or contraction of the upper case 1, the lower case 12 or the wiring board 3 itself.

  At this time, the wiring board 3 is screw-fixed to the mounting bosses 1B and 1C of the upper case 1, and the screw 11 is inserted into the mounting hole 20C at a substantially intermediate position of the reinforcing body 20 disposed between the mounting bosses 1B and 1C. Is fixed to the flat bottom surface of the reinforcing body 20, and the rigidity of the reinforcing body 20 prevents the wiring board 3 from warping downward.

  That is, the wiring board 3 is fixed in contact with the bottom surface of the reinforcing body 20 having rigidity in a region formed between the mounting bosses 1B and 1C disposed on the outside of the display body 5 and between the left and right elastic conductive connecting bodies 6. In addition, since the upper surface of the wiring board 3 is supported by the reinforcing body 20, the bending toward the reinforcing body 20 is suppressed.

  Accordingly, the elastic conductive connection body 6 is elastically contacted in a state of being substantially evenly bent over the entire range in contact with the upper surface of the wiring board 3 and the lower surface of the side end portion of the display body 5, and the plurality of conductive patterns 7 and the plurality of conductive patterns 7. The electrode 5A is in contact with the conductive portion 6A of the elastic conductive connecting member 6 with a constant elastic contact force, and the reinforcing member 20 is less likely to fall or warp inward of the adjacent elastic conductive connecting member 6, so that the conductive property of the wiring board 3 can be reduced. The electrical connection between the pattern 7 and the electrode 5A of the display body 5 is ensured.

  Although the present invention can be implemented even if the reinforcing body is formed of a thick plate made of an insulating resin, the reinforcing body 20 is provided with a plurality of crosspieces within the substantially frame-shaped frame portion 20A as described above. By arranging 20B in a grid and integrally forming them, the desired rigidity can be easily given, and the material used is lighter and the warping of the reinforcing body itself is less than in the case of forming it with a simple plate. The bottom can be made flat.

  As described above, according to the present embodiment, the substantially rectangular parallelepiped reinforcing body 20 made of insulating resin is disposed between the substantially flat display body 5 and the wiring board 3 and the lower surface of the side end portion of the display body 5. By adjoining the elastic conductive connecting member 6 disposed between and the wiring board 3 and elastically contacting them, the wiring board 3 is abutted and fixed to the bottom surface of the reinforcing body 20 so that the display body 5 is arranged in the front-rear direction. A wiring board 3 screwed to the upper case 1 on the outside is additionally abutted and fixed to the bottom surface of the reinforcing body 20, and the wiring board 3 is supported by the rigid reinforcing body 20 on the top surface thereof. In order to prevent warping in the direction and the reinforcement body 20 adjacent to the elastic conductive connection body 6, in order to prevent warping and falling to the inside of the elastic conductive connection body 6 slightly bent in the vertical direction, The elastic contact force between the wiring board 3 and the display body 5 by the elastic conductive connection body 6 is substantially constant. Sauce, a reliable electrical connection between the display body 5 and the wiring board 3, in which it is possible to obtain a stable display can be remote control transmitter.

  In the above description, the elastic conductive connection body 6 is described as being disposed on the lower surfaces of the left and right side end portions of the display body 5, but the elastic conductive connection body 6 is disposed only on the lower surface of one side end portion of the display body 5. A configuration in which one side surface of the reinforcing body 20 is adjacent to the elastic conductive connecting body 6 and the other side surface is brought into contact with, for example, a rib protruding from the lower surface of the upper case 1 and the wiring board 3 is fixed to the reinforcing body 20. However, the present invention can be implemented.

  Further, in the above description, the elastic conductive connection body 6 is disposed so as to be in elastic contact with the lower surface of the left and right side ends of the display body 5 and the upper surface of the wiring board 3, and before and after the reinforcing body 20 disposed below the display body 5. The wiring board 3 is abutted and fixed at a substantially intermediate position in the direction to suppress the downward warping of the wiring board 3. For example, the display body is a rectangle that is long in the left-right direction. In a remote control transmitter in which an elastic conductive connection body is arranged on the lower surface of the side end, the wiring board is abutted and fixed at a substantially intermediate position in the left-right direction of the reinforcing body arranged below the display body. It is good also as a structure which suppresses the curvature to a direction.

  Further, in the above description, the wiring board 3 is screw-fixed to the mounting hole 20C at a substantially intermediate position of the reinforcing body 20, but the reinforcing body mounting holes are provided at a plurality of positions in two or more locations in the front-rear direction. By fixing the wiring board to the reinforcing body with screws at a plurality of locations, the number of screw parts and the mounting time increase, but the wiring board can be more firmly abutted and fixed to the reinforcing body.

  The remote control transmitter according to the present invention has a reliable electrical connection between the display body and the wiring board and can provide stable display, and is mainly useful for remote control of various electronic devices.

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

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper case 1A Display part 1B, 1C Mounting boss 2 Operation body 2A Operation part 3 Wiring board 3A, 3B, 3C Through-hole 4 Switch contact 4A Fixed contact 4B Movable contact 5 Display body 5A Electrode 6 Elastic conductive connection body 6A Conductive part 7 Conductive pattern 9 Transmitter 10 Control unit 11 Screw 12 Lower case 20 Reinforcing body 20A Frame portion 20B Crosspiece 20C Mounting hole

Claims (2)

A substantially box-shaped case with a lower opening, a wiring board disposed below the case and fixed at a predetermined position on the case, and an electric body provided by operation of the operating body provided on the wiring board and protruding from the upper surface of the case. A switch contact that makes and breaks the contact, a substantially flat display body disposed between the case and the wiring board, a bottom surface of the side edge of the display body, and the wiring board. An elastic conductive connecting body and a control section for transmitting a remote control signal from the transmitting section in accordance with the electrical contact / separation of the switch contact, and a substantially rectangular parallelepiped reinforcing body made of insulating resin, the display body and the wiring board. The wiring board is fixed to the case with screws on the outside of the display body in the longitudinal direction, and the wiring board is fixed to the case in the longitudinal direction. Small position In Kutomo substantially intermediate position, and the inside of the elastic conductive couplers, the wiring substrate is fixed by screws to the reinforcing member, a remote control transmitter of the wiring substrate is brought into contact fixed to the bottom surface of the reinforcing member. The remote control transmitter according to claim 1, wherein the reinforcing body is integrally formed by arranging a plurality of crosspieces in a lattice shape within a substantially frame-like frame portion.

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