JPH11219637A - Remote control transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote control transmitter for use in electronic apparatus of different type, in which the fabrication costs are suppressed synthetically, change in the number of keys, key arrangement, etc., can be performed easily. and the operation is stabilized SOLUTION: The upper case of this transmitter is divided into a panel part 14 having a key hole to admit insertion of a key top 2B and a frame surrounding the panel part, and the synthetical costs of the upper case including a display part can be suppressed by directly printing the indication of performance of a operation key 2A, and a hard-to-exfoliate indication can be given in an accurate position. A change in the number of keys, key arrangement, etc., can be performed with die alteration of only the panel part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control transmitter used for various electronic devices.

[0002]

2. Description of the Related Art A conventional remote control transmitter of this type will be described with reference to the drawings. FIG. 10 is a side sectional view of a conventional remote control transmitter, and FIG. 11 is an exploded perspective view of the same. In FIG. 10, reference numeral 1 denotes a wiring board made of a hard insulating material, and a plurality of fixed contacts for operation switches are provided on the upper surface thereof. 1A and an electronic circuit (not shown) are provided, and an electrode 1B for receiving and connecting the battery 7 and an LED 1C for generating an infrared signal are mounted on the lower surface.

[0003] The two superposed on this wiring board 1
Is a flat elastic contact body made of an elastic insulating material, and a key top 2B for an operation key 2A of a remote control transmitter is provided at a position corresponding to the plurality of fixed contacts 1A on the upper surface thereof so as to protrude upward. The lower portion of each key top 2B is connected to a flat plate portion 2D by a thin dome portion 2C, and a movable contact 2E facing each fixed contact 1A is provided on the inner top surface.

[0004] Reference numerals 3 and 4 denote a resin lower case and an upper case which surround and house the wiring board 1 and the elastic contact body 2, respectively. The lower case 3 has an opening 3A for accommodating the battery 7 and both ends on the lower surface. , And a plurality of bosses 3C are provided on the inner bottom surface to support the wiring board 1.

[0005] The upper case 4 has a key hole 4A through which a plurality of key tops 2B of the elastic contact body 2 pass.
A plate-like rib 4B at the lower periphery presses the flat plate portion 2D around the dome portion 2C below each key top 2B of the elastic contact body 2 against the wiring board 1, and a column having screw holes 4C below both ends. The lower case 3 and the upper case 4 are fixed by tightening screws 6 passed through the screw holes 3B at both ends of the lower case 3.

[0006] In the 3D, after the battery 7 is housed, the lower case 3
Is a lid plate for closing the opening 3A. A display sheet 8 is affixed to the upper surface of the upper case 4, and various displays (not shown) indicating the function of each operation key 2A of the remote control transmitter are printed on the upper surface.

[0007] The remote control transmitter configured as described above is widely used for remote control of general electronic equipment, and its operation is performed by turning off / on the power of the electronic equipment, changing modes, and the like. Is pressed in accordance with the display on the display sheet 8 to transmit a signal to operate the electronic device, and a detailed description thereof will be omitted.

[0008]

However, in the above-mentioned conventional remote control transmitter, the display sheet 8 on which various displays indicating the function of each key 2A and the like are printed is attached to the upper case 4.
Since the display sheet 8 is attached to the upper surface of the remote control transmitter, the display sheet 8 is required to be manufactured and attached, and the display sheet 8 is located on the operation surface of the remote control transmitter. It is necessary to prevent the display sheet 8 from being stained or the like, and it is necessary to firmly attach the display sheet 8 to an accurate position.

Further, the upper case 4 is provided with a plurality of key holes 4A for passing the key tops 2B, and has a plate-shaped rib 4B at a lower portion around the key holes 4A. The mold is complicated and expensive, and it is difficult to cope with a change in the number of keys and a change in the key arrangement.

The present invention solves such a conventional problem. The upper case is divided into two parts and one of them is integrated with a display sheet, so that the manufacturing cost can be reduced overall and the production cost can be reduced. Another object of the present invention is to provide a remote control transmitter in which a mold for manufacturing the upper case is inexpensive and the number of keys and the key arrangement can be easily changed.

[0011]

In order to solve the above-mentioned problems, a remote control transmitter according to the present invention divides an upper case into a panel portion having a key hole through which a keytop is passed and a surrounding frame portion. Is printed directly on the upper part of the panel section.

This makes it possible to reduce the overall cost of the upper case including the display of the function of each key and the like, to provide a display that is difficult to be peeled off at an accurate position, and to determine the number of keys and the key arrangement. A remote control transmitter that can easily respond to the change by changing the mold only in the panel portion can be realized.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention has a rigid contact having a fixed contact for a plurality of operation switches on an upper surface, a circuit for generating signals and an electrode for connecting a battery. A wiring board made of an insulating material, and a key top for an operation switch is provided so as to protrude upward at a position corresponding to the plurality of fixed contacts, and a thin dome portion is provided below the key top. An elastic contact body made of an elastic insulating material having a movable contact opposite to the fixed contact on the inner top surface of the dome portion, connected to the flat plate portion, and supporting and surrounding the wiring board from below, with a lid plate on the lower surface. A resin lower case with a battery housing and a plurality of keyholes that are arranged on top of the elastic contact body and pass through key tops for operation switches, and the functions of each key are printed on the upper surface Displayed flat panel A remote control transmitter comprising a frame body portion for pressing the outer periphery of the panel portion from above and a peripheral side wall portion, and a resin upper case for housing and fixing each of the above-mentioned components by being screwed to the lower case. It is possible to reduce the overall manufacturing cost of the upper case including the display of the function of each key, etc., to make it difficult to peel off the display at the correct position, and to set the number of keys. This has the effect of realizing a remote control transmitter that can easily cope with changes in the key layout and key layout by changing the mold only in the panel portion.

According to a second aspect of the present invention, in the first aspect of the present invention, a plurality of support bosses for supporting the lower surface of the wiring board are provided inside the bottom surface of the lower case. When operating the remote control transmitter, the wiring board is prevented from bending downward, and the movable contact under the keytop and the fixed contact on the wiring board are securely contacted at a predetermined contact pressure, and the switch It has an effect that an operation can be performed.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the upper end of the entire outer periphery of the lower case is formed on the outer peripheral step of the lower end of the side wall around the upper case. The upper case and the lower case are combined and fixed, and the step at the outer periphery of the lower end of the side wall around the upper case fits into the inside of the side wall around the lower case. Since it is engaged, it has a high strength against external force as the whole case after the combination, does not cause displacement between the upper case and the lower case due to stress such as torsion, and has an effect that appearance is good. .

According to a fourth aspect of the present invention, in the first aspect of the present invention, a plurality of hook-shaped claws are provided above the inside of the side wall of the upper case to form a flat plate. The edge around the panel part is engaged and fixed, and deformation due to warpage of the panel part and sinking of the panel part due to pressing from above can be suppressed. This has the effect of preventing malfunction of the switch.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the elastic contact body is formed of a polymer material, and the elastic contact body is higher than the height of the dome portion below the key top. The flat portion is made thicker and its upper surface is brought into contact with the lower surface of the panel portion, and the dome portion below the keytop is disposed so as to be connected to a position sunk from the upper surface of the flat portion,
The upper and lower surfaces of the thick flat plate around the dome portion below each key top of the elastic contact body can be formed as flat plate portions and flat plates without providing a plate-like rib or the like at the lower part around the key hole of the panel portion. Can be sandwiched by the wiring board of the shape, so that when the key is operated by pressing the key top, there is no deformation such as bending of the flat plate portion and the like, and the switch operation can be stably performed by suppressing the key unevenness. It has the action of:

According to a sixth aspect of the present invention, in the first aspect of the present invention, the projection protrudes downward through the elastic contact body and the wiring board substantially at the center of the lower surface of the panel portion. A boss that comes into contact with the lower case is provided and screwed through a screw hole provided at the corresponding position on the bottom of the lower case.This suppresses deformation due to warpage of the panel and sinking due to pressing from the outside, so elastic contacts This has an effect that a proper operation of the switch can be performed while keeping a constant distance between the movable contact below the key top of the body and the fixed contact on the wiring board.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components as those described in the section of the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.

(Embodiment 1) FIG. 1 is a side sectional view of a remote control transmitter according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line HH of FIG. 1, and FIG. FIG. 1 is a perspective view, in which 1 is a wiring board made of a hard insulating material, on which a plurality of fixed contacts 1A for key switches and an electronic circuit (not shown) are disposed, and a battery 7 is disposed on a lower surface. FIG. 4 shows that an electrode 1B for accommodating and connecting an LED and an LED 1C for generating an infrared signal are mounted, and that an elastic contact body 2 made of an elastic insulating material is superimposed on the wiring board 1. As shown in the enlarged cross-sectional view of the switch portion, a key top 2B for an operation key 2A is provided at a position corresponding to the plurality of fixed contacts 1A so as to protrude upward, and a thin portion below each key top 2B is provided. Flat plate 2D with dome 2C Together are connected, the movable contact 2E facing the fixed contacts 1A is provided on its inner top surface is the same as in the prior art.

The lower case 13, the panel portion 14, and the upper case 15, which surround and house the wiring board 1 and the elastic contact body 2, are provided with a resin lower case 13 disposed below the wiring board 1 in a lower surface. Has an opening 13A with a cover plate 3D for accommodating the battery 7 and screw holes 13B at both ends, and a plurality of bosses 13C disposed on the inner bottom surface are provided on the wiring board 1.
Is supported in the same manner as in the prior art, but the resin panel 14 disposed on the upper portion of the elastic contact body 2 is provided with a key top 2B of the plurality of operation keys 2A. A plate-like rib having a plurality of keyholes 14A through which a plate-shaped rib 14B is provided at a lower portion around each keyhole 14A, and a flat plate portion of a dome portion 2C below each keytop 2B of the elastic contact body 2. While the 2D is pressed against the wiring board 1, various displays (not shown) indicating the function of each operation key 2A of the remote control transmitter are provided on the upper surface thereof.
Are printed and displayed, and an upper case 15 is provided so that the outer periphery of the panel portion 14 is pressed from above by the frame portion 15A.

The upper case 15 has a side wall 15B on the entire lower periphery including the side of the frame 15A, and the lower end thereof is a step 15C to form an upper end of the side wall 13D of the lower case 13. 13E in contact with the upper case 15
The upper end 13E of the side wall 13D of the lower case 13 is configured to engage with the step 15C at the lower end of the side wall 15B of the lower case 13 from the outside, and has a screw hole 15D provided below both ends of the upper case 15. The upper case 15 and the lower case 13 are firmly engaged and fixed by tightening the screws 6 passed through the screw holes 13B at both ends of the lower case 13 to the cylindrical fastening boss 15E.

Further, a hook-like claw portion 15F provided on the upper side inside the side wall portion 15B of the upper case 15 engages with a notch portion 14C around the flat panel portion 14 to warp the panel portion 14. Deformation and sinking due to pressing from above are suppressed.

The operation of the remote control transmitter configured as described above is the same as that widely used for remote control of general electronic equipment, as described in the section of the prior art. The electronic device is operated by pressing the operation key 2A corresponding to the content of the operation such as disconnection of the power supply of the electronic device, change of the mode, etc. according to the display on the upper surface of the panel unit 14 to transmit a signal and operate the electronic device. Omitted.

As described above, according to the present embodiment, it is possible to reduce the overall manufacturing cost of the upper case portion composed of the panel portion 14 displaying the function of each operation key 2A and the like and the upper case 15. In addition, it is possible to easily cope with a change in the number of keys, the key arrangement, and the like by changing the mold of only the panel portion 14, and the panel portion 14 and the wiring board 1 sink down when the key top 2B is pressed. Thus, a remote control transmitter capable of performing a reliable switch operation without any deformation of the upper case 15 can be realized.

(Embodiment 2) FIG. 5 is a side sectional view of a remote control transmitter according to a second embodiment of the present invention, and FIG. 6 is an external perspective view of the panel unit. The shapes of the elastic contact body 21 and the panel portion 22 are different from those of the first embodiment.

That is, as shown in the enlarged cross-sectional view of the switch portion, which is the main portion of FIG. 7, the thickness of the flat plate portion 21B between the operation keys 21A of the elastic contact member 21 is the key top 21C.
It is formed thicker than the height of the lower dome portion 21D,
The dome portion 21D is connected to a position below the upper surface of the flat plate portion 21B, and the flat plate portion 21B of the elastic contact body 21 is connected.
Each key hole 2 is provided on the lower surface of the panel portion 22 in contact with the upper surface of the
There is no plate-like rib or the like around 2A, and the entire panel portion 22 has a completely flat plate shape.

Therefore, the panel portion 22 can be formed by stamping a hard resin plate or a metal plate.

The operation of the remote control transmitter configured as described above is exactly the same as that of the first embodiment, and the description is omitted.

As described above, according to the present embodiment, as in the case of the first embodiment, the key hole 22A of the panel portion 22 is formed.
The upper and lower surfaces of the thick flat plate portion 21B around the dome portion 21D below each key top 21C of the elastic contact member 21 can be replaced by a flat panel portion 22 without providing a plate-shaped rib or the like at the lower part of the periphery.
When the key top 21C is pressed, there is no deformation such as bending of the flat plate portion 21B when pressing the key top 21C, and a stable switch operation can be performed by pressing the unevenness of the operation key 21A. Things.

(Embodiment 3) FIG. 8 is a side sectional view of a remote control transmitter according to a third embodiment of the present invention, and FIG. 9 is an exploded perspective view of the remote control transmitter according to the first and second embodiments. The shape of the panel portion 31, the elastic contact body 32, the wiring board 33, and the lower case 34 are different from those of the first embodiment.

More specifically, two column-shaped bosses 31A having screw holes at the tip are provided at substantially the center of the lower surface of the panel portion 31 formed of resin, and the bosses 31A are provided with the elastic contact body 32 and the wiring board. The two boss holes 32A, 33A provided at corresponding positions of 33 are penetrated, and are tightened with screws 6 through screw holes 34A provided at corresponding positions on the bottom surface of the lower case 34.

As described above, according to the present embodiment, deformation due to warpage of the panel portion 31 and sinking due to pressing from the outside can be suppressed, so that the movable contact under the key top 32B of the elastic contact member 32 can be suppressed. The switch can be operated properly while keeping the distance between the switch and the fixed contact on the wiring board 33 constant.

[0034]

As described above, according to the present invention, the total cost of the upper case including the display of the functions of the operation keys and the like is low, and it is possible to provide a display that is hard to peel off at an accurate position. At the same time, there is an advantageous effect that a remote control transmitter can be provided which can easily respond to changes in the number of keys, key arrangement, and the like by changing the mold only in the panel portion.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a remote control transmitter according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line HH in FIG.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is an enlarged sectional view of a switch portion, which is a main portion of the same.

FIG. 5 is a side sectional view of a remote control transmitter according to a second embodiment of the present invention.

FIG. 6 is an external perspective view of the panel unit.

FIG. 7 is an enlarged cross-sectional view of a switch part, which is the main part.

FIG. 8 is a side sectional view of a remote control transmitter according to a third embodiment of the present invention.

FIG. 9 is an exploded perspective view of the same.

FIG. 10 is a side sectional view of a conventional remote control transmitter.

FIG. 11 is an exploded perspective view of the same.

[Explanation of symbols]

 1,33 Wiring board 1A Fixed contact 1B Electrode 1C LED 2,21,32 Elastic contact 2A, 21A Operation key 2B, 21C Key top 2C, 21D Dome 2D, 21B Flat plate 2E, 21E Movable contact 13,34 Lower case 13A Opening 13B, 15D, 34A Screw hole 13C, 15E, 31A Boss 13D, 15B Side wall 13E Upper end 14, 22, 31 Panel 14A, 22A Key hole 14B Rib 14C Notch 15 Upper case 15A Frame 15C Step 15F Claw 32A, 33A Boss hole

Claims (6)

[Claims] 1. A wiring board made of a hard insulating material having a fixed contact for a plurality of operation switches on an upper surface and having a circuit section for signal generation and an electrode section for battery connection, and overlaid on the wiring board. A key top for an operation switch is provided to protrude upward at a position corresponding to the plurality of fixed contacts, and a lower portion of the key top is connected to a flat plate portion by a thin dome portion, and an inner top surface of the dome portion is provided. An elastic contact body made of an elastic insulating material having a movable contact facing the fixed contact,
A resin lower case that surrounds and supports the wiring board from below and has a battery housing with a cover plate on the lower surface, and a plurality of upper cases that are arranged on the upper part of the elastic contact body and that pass through key tops for operation switches. It has a key-hole, a flat panel part on which the function of each key is printed and displayed on the upper surface, a frame part that presses the outer periphery of the panel part from above and peripheral side walls, and is screwed to the lower case. A remote control transmitter comprising a resin upper case for accommodating and fixing each of the above-described constituent members. 2. The remote control transmitter according to claim 1, wherein a plurality of support bosses for supporting a lower surface of the wiring board are provided inside a bottom surface of the lower case. 3. The upper case and the lower case are combined and fixed by externally engaging the upper end of the entire outer periphery of the lower case with the step at the outer periphery of the lower end of the side wall around the upper case. Or the remote control transmitter according to 2. 4. A panel according to claim 1, wherein a plurality of hook-shaped claws are provided above the inside of the side wall of the upper case, and the peripheral edge of the flat panel is engaged and fixed. A remote control transmitter according to claim 1. 5. The elastic contact body is formed of a polymer material, the flat plate portion is made thicker than the height of the dome portion below the key top, and its upper surface is brought into contact with the lower surface of the panel portion. The remote control transmitter according to any one of claims 1 to 4, wherein the dome portion is disposed so as to be connected to a position below the upper surface of the flat plate portion. 6. A boss that penetrates through the elastic contact body and the wiring board and protrudes downward to abut the lower case at substantially the center of the lower surface of the panel portion, and screws through a screw hole provided at a corresponding position on the bottom surface of the lower case. The remote control transmitter according to claim 1, wherein the remote control transmitter stops.