JPH0282797A - Card type wireless transmitter - Google Patents

Abstract

PURPOSE:To make the title transmitter smaller and thinner by interposing a sound pattern setting insulating sheet which selectively regulates the contact between the polar surface of a battery and a conductive pattern formed on a circuit board side. CONSTITUTION:When a wireless transmitter is applied to a wireless chime, by changing the contact mode between a comb line projected piece 6a of a conductive plate 6 and a conductive part 10c on a circuit board PC side with the use of an insulating sheet 7, the tone pattern of an annunciating sound transmitted from the wireless transmitter is changed. For example, two through holes 7a are formed on the insulating sheet 7, the first, third and sixth projected pieces 6a out of the six comb line projected pieces 6a of the conductive plate 6 are held in a minus pole. Thus, the tone pattern of the sound output can be without using a switching means, and the small and thin card type wireless transmitter can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides an extremely thin card-type wireless transmission 1a.
Place in a container.

[Prior Art] In recent years, so-called wireless transmitters, which operate chimes and emergency receivers wirelessly by transmitting weak radio waves, have come to be widely used in homes and offices.

FIG. 14 shows the structure of such a wireless transmitter.
It has a three-piece structure in which the lid cover 300 (D convex portion 301) is engaged with the recess 203 of the upper case 2θO which has a VA angle on the upper side.
When removed, the battery accommodating section 501 is exposed and the battery (not shown) can be easily replaced, but at this time, the exposed dip switch 401 is operated to set the ID code. .

However, when configuring a wireless transmitter with such a three-piece structure, there are problems such as the thickness increases, the number of parts increases, and some parts may be lost during use.
Additionally, since a date switch was used to set the house code, there was a certain limit to how thin the product could be made.

In addition, when such a wireless transmitter is used for a wireless chime, etc., the ring tone pattern is set in a predetermined 44-tone pattern and can be changed. The structure is such that a date switch must be operated even when changing the sound pattern, and this also poses an obstacle to making the device smaller and thinner.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problems that the conventional wireless transmitter has. The purpose is to provide a structured wireless transmitter that does not use date switches to change the sound settings.

[Means for Solving the Problems] The wireless transmitter of the present invention proposed to solve the above problems includes a loop antenna formed of a conductive pattern and a transmission ttr control circuit equipped with a control operation switch. A circuit board formed and driven by a battery is used as a base plate part, and a cover plate part having a push button corresponding to a control operation switch on the transmission control circuit side is integrally repaired on the base plate part 1. In the card-type wireless transmitter, which is constructed by incorporating the above-mentioned battery, the polar surface of the battery and the times! The structure includes a sound pattern setting cover that selectively defines contact with the conductive pattern formed on the eight substrates.

In addition, the wireless transmitters proposed at the same time are:
2. The card-type wireless transmitter according to claim 1, wherein the suit is set by cutting or connecting a jumper wire such as a C chip mounted on the circuit board.

Further, in a preferred embodiment, the notch formed in the base plate part 1 to form the key top piece of the push button of the control operation switch is formed when the keyed shive piece of the push button is pressed with a finger. , the fingertip side is structured so that it dips downward.

C Example] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an exploded structure of the wireless transmitter of the present invention.
The figure shows.

The illustrated wireless transmitter WA is formed into a thin card shape for convenient portability, has a transmitter 48 control circuit section IO, and is powered by a battery 3! It is constructed by assembling a cover plate part 12 on a base plate part 11 consisting of a base plate part 11 and a board PC, and a loop antenna 10a made of a conductive pattern is attached to a circuit board PC constituting an opening of the base plate part. Three control operation switches SW are formed, and the transmission lpj'11 circuit unit 10 is operated by a CCPU 10A using a lithium battery or the like as a power source.

The loop antenna 10a converts the control signal 18 generated by the wireless transmission section 1a (indicated by IOB in FIG. 8) in the transmission control circuit section 10 into a weak radio wave and outputs it. Because the wireless transmitter is formed planar compared to the conductor antenna, the wireless transmitter becomes even thinner.

Each of the control m operation switches SW is mounted on the circuit board PC with its actuating part a matching with the convex part 12b formed on the back surface of the key top piece part 12a formed on the cover plate part 12. When the key top piece 12a, which has a notch 12e formed in the cover plate 12 and has a "C" cantilever structure, is pressed, the operating part a of the switch SW is pushed downward. , the switch SW is activated, and the control signal is radiated from the loop antenna log to the receiver side.

The circuit board PC is properly attached to the cover plate part 12 using screws 4, etc., and the battery a can be taken in and taken out through an opening 12c formed at the rear of the cover plate part 12.

The coin-shaped battery 3 is attached to a support plate 5 of a battery case 5, which has a pair of legs 5 and each having a locking claw 5b at the tip.
The conductive plate 6 is accommodated in the arc-shaped hole 5d constructed by C, and below the conductive plate 6 is formed with the same number of #4tI#-shaped convex pieces 6a as the conductive parts 10c formed on the circuit board PC side. The convex portion 6b formed on the conductive plate 6 is held in contact with the negative pole side of the battery 3 (indicated by !1 in the figure). In this way, the conductive part 10c formed on the circuit board PC is fixed at the negative level of the battery by changing the contact mode between the m-toothed six pieces 6a of the conductive plate 6 and the conductive part 10c. The signal fixed in this way can be used as data that defines the sound pattern (No. 8) as described later.

When the battery case 5 is inserted through the opening 12c formed at the rear of the cover plate part 12, the locking claws 5b formed at the tips of the legs of the battery case 6 engage the corresponding locking protrusions on the cover plate part 2. 12d, and when the battery 3 is housed in this way, the upper positive electrode side of the battery 3 comes into contact with the conductive piece 10g formed on the circuit board pC (11), and the battery; The lower negative pole is the Sakaki tooth-shaped curved piece 6a of the conductive plate G.
1! to the conductive portion 10c of the circuit board PC through the 1! source is supplied (see Figure 6A).

Incidentally, nameplate stickers 13 and 14 indicating the product number and function usage method of the wireless transmitter A are affixed to each of the upper surface of the cover plate section 12 and the lower surface of the base plate section 11.
A sticker 13 affixed to the top surface of the cover plate part 12 has an indicator 13a indicating the position of the key top 12a formed on the cover plate part 12, and in front of it is an indicator 13a for indicating the position of the key top 12a formed on the cover plate part 12. A light transmitting portion 13b is formed to transmit the lighting light of the LED loe.

The example shown in FIG. 2 shows an example in which a wireless transmitter is applied to a wireless chime.

By using the insulating sheet 7 to change the contact pattern between the six comb-like pieces 6a of the conductive plate 6 and the conductive portion 10c of the circuit board pcf@, the tone pattern of the notification sound transmitted from the wireless transmitter A can be changed. Figures a) to c) show the types of insulating sheets used for this purpose.

In FIG. 3&), two through holes 7a are formed in the insulating seal 7, and the first one of the six sakaki tooth-shaped curved pieces 6& of the conductive plate 6 is formed.
3. The sixth piece 6a (#11316) is held at the negative terminal of the battery 3, and is labeled 7b as Bing Pong. Second. The sixth piece 6a (#1.2.6) is held at the negative terminal of the battery, and the display 7b is Bororon, the 3rd!2Ic) is the 1st piece, and the sixth piece 6a (#l, B)
is held at the negative terminal of the battery 3, and a display 7b is made according to a tone pattern such as Boo.

According to such a method, the tone color pattern of the sound output can be set without using a switch means.

4A and 4B show the structure of the cover plate section 12 of the wireless transmitter.

In the first embodiment shown in FIG. 2, three notches 12e are provided on the upper surface of the cover plate 2, which is made of an insulating material such as plastic, and the pieces are connected with a cover plate 12''. Three key top pieces 12a for push buttons with a flexible structure are formed, and when used, by removing the connecting pieces 12f according to the required key top pieces 12a, it can be used for any number of push buttons from 1 to 3. The key tops will be easily formed.

In the embodiment shown in the fourth ArM, one notch 12e is provided on the upper surface of the cover plate part 2, but in both the first and second embodiments described above, the cover plate part 1 is
Since it is possible to easily construct a push button key top that utilizes the elasticity of 2, it is possible to form a wireless transmitter even more easily.

FIG. 5A explains the push button operation using the key top piece 12a shown in FIGS. 4A and 4B.

When the key top piece 12a is not pressed, the base 12g of the key top piece 12a is approximately flush with the top surface of the cover plate 12, and the convex portion 12b provided on the bottom surface of the key top piece 12a is Base plate part 1 provided below
1 is in an open state in which the actuating piece a of the switch SW mounted on the switch SW is not pressed, but when the key top piece 12a is pressed with the finger F, the key top piece 12& moves downward from the base j2g and touches the convex part 12b. presses the operating piece a of the switch SW mounted on the base plate portion 11. When the finger F is removed from the key top piece 12&, the key top piece 12a returns to its non-operating state.

By the way, when constructing a push button switch using such a key top piece 12a, it is beneficial to reduce the number of parts and make the wireless transmitter thinner because it does not require a spring or the like. When pressing 12&,
In the structure shown in FIG. 6A, in which the ventral side of the finger F is bent, the depression during operation is large.

For this reason, if a vinyl nameplate sticker is attached to the top surface of the cover plate part 12, the nameplate sticker is likely to stretch, and if used for a long period of time, the nameplate sticker may become chattering. This may cause problems such as deteriorating the appearance of the product.

The structure of the key top piece shown in FIG. 5B is such that the key top piece 12a can be operated in the direction of the notch 12e formed in the cover plate 12 of the wireless transmitter to form the key top piece 12a. At times, the tip part of the finger F is formed so that it falls down, and the base 1 of the key top piece 12a
The degree of curvature at 3 g is reduced.

The operation of the key top piece is similar to that shown in FIG. 5A.

FIG. 6A and FIG. 6B show the structure of the base plate section, which is another important part of the wireless transmitter of the present invention.

A loop antenna 10a is formed by a conductive pattern on the circuit board PC constituting the base plate gll, and this loop antenna 10a is designed to prevent the wireless transmitter from being removed by hand in order to avoid reducing radio wave radiation efficiency during use. It is installed in a location that cannot be covered by the hand when the operator holds the button and operates the operation push button.

The switch SW is provided at a position where its actuating piece a matches the key top piece 12a provided on the cover plate part 12 side when the cover plate part 12 is attached to the circuit board PC, and U10A.

A crystal oscillator 10E for generating a reference clock for the CF'U 10A, an oscillator 10F for generating a reference frequency for the oscillation circuit of the wireless transmitter 10B,
A conductive piece 1 that is connected in contact with the positive electrode of the battery 3 (indicated by a two-dot chain line in FIG. 6A) when the battery 3 is housed.
1) g and the conductive &6 provided at the negative terminal of battery 3 as described later! A conductive portion 10c is formed which is selectively contacted by the nn-shaped convex portion 6a.

Note that 10e is an LED that lights up when the switch SW is operated, and this L[! :D I Oe emission is
M 1 is externally exposed from the transparent portion 13b formed on the nameplate seal 13 through the transparent hole 12e formed on the cover plate portion 12 side.
11 and is visible.

FIG. 7 shows details of the D code section, which constitutes another essential part of the present invention.

In this example, one chip C mounted on a circuit board PC
Connection terminals HO to II for ID code setting of PU 10A
By selectively connecting a part of the conductive line 10c connected to 10 with a conductive chip lOd and fixing the conductive line 10f to the voltage level of the tR circuit, the ID code of the wireless transmitter is fixedly set. However, in addition to the method using a conductive chip, a method of selectively disconnecting or shorting the jumper wire may be adopted.

If the ID code of wireless transmitter A is set in advance at the time of manufacture using this method, it will not be a problem if the end user is burdened with the trouble of setting operations during use. It has the advantage that the structure of the wireless transmitter itself can be made smaller and thinner than the one that sets a code.

FIG. 8 shows an example of the configuration of a transmitter control circuit 10 provided inside a wireless transmitter.The basic configuration of the control circuit is a microcomputer consisting of a 1-chip CPU; The chip CPU10A has a call switch SW (corresponding to la shown in Fig. 1).
, a wireless transmission H10B provided with an antenna 10a,
[To set the D code] of the wireless transmitter
A D code setting unit 10cIIt is provided, and when the call switch SW is operated, transmission data specifying a ring tone with a preset tone pattern is sent to the wireless transmission unit 10[3, and is transmitted from the antenna 10a in the form of a radio wave signal. It is configured to be estrous.

Note that SWI to SW3 are switches for setting transmission data, and these switches SW1 to SW3 are turned ON.

0)? Depending on the cause of When configuring a chime, set the ringtone tone pattern, etc.

In addition, IOD is a wireless transmitter! JJ t R
This is a detector that detects a voltage drop in the battery, and when the battery voltage drops to a predetermined level, it sends a dead battery signal to the CPU10A side, and in the CPU10A, the wireless transmitter 10B sends a dead battery signal to the receiver side. The configuration is such that it is sent to

FIG. 9 shows the wireless transmission 4'tJ of wireless transmitter A.
This figure shows an example of the format of transmission data transmitted from the unit 10B in the form of radio wave No. 45, and the example shows an i-frame signal format.

As shown in the figure, 20 bits (HO to HIF) are assigned to the ID code, a prereceive TP is provided at the beginning of the ID code, 3 bits of transmission data DO to D2 are provided after the 10 code, and There is a parity check P.

In such a wireless system, the number of bits in the D code is arbitrary, but the number of bits in the D code is arbitrary, but the number of bits in the D code is
If you set the D code, approximately 1()00000 or more 1
Since the D code is not a setting, it is sufficient for an actual product.

FIG. 10 shows the configuration of an oscillation circuit section included in the transmission control circuit.

The wireless transmitter 10B has a configuration including an oscillation circuit +01, a frequency multiplier 102, and a loop antenna l (la). In the figure, Ql is a transistor of a crystal oscillation circuit, and this transistor Ql is itI
biased by resistors R1, 1N2, and resistor R3
DC negative feedback is applied.

Further, the oscillation circuit 101 includes a crystal oscillator X, a coil L 1
．． It is configured to oscillate at a frequency determined by capacitor C1, but in order to maintain the stability of the oscillation operation, capacitors 4 and C2 control the amount of stop feedback, capacitors fC3, C4,
The amount of negative feedback is determined by the coil L2 to maintain stable oscillation.

The output of the oscillation circuit 101 is applied through a capacitor C6 to a transistor Q2 biased by resistors R4 and R5, and is applied to a coil L3. The harmonics of the frequency of the resonant circuit formed by the capacitor C7 are selectively amplified and supplied to the loop antenna lOa through the capacitors C8 and CIO, where they are radiated as radio waves (number g).

Here, the parallel resonant circuit formed by the capacitor C9 and the coil L4 is tuned to the target oscillation frequency, and has a low impedance for other frequencies.
It acts as a filter to remove interference waves.

Further, the capacitor C1l connected to the loop antenna 10a is provided to improve the radiation efficiency of the antenna together with the inductance component of the loop antenna lOa.

When forming such an oscillation circuit section on one side of a circuit board, it is recommended to form a conductive shield with a conductive plate pasted on the back side of the circuit board except for the part corresponding to the loop antenna lOa. [1] In such a device, an eddy current is induced in the conductive plate by a high frequency magnetic field generated by the high frequency generated by the oscillation circuit J, and this eddy current is
Since the magnetic W that tries to stop the fll is generated, the incoming magnetic field is canceled out by the tl and attenuated, thereby making it possible to eliminate the interference of the disturbing waves.

Fig. 10A and Fig. 10I3 both show the procedure for forming a conductive shield on one circuit board.
In the example shown in Figure A, a double-sided copper-clad laminate P is used in which gI foil is pasted on the front and back surfaces of the insulating board.

The surface of the double-sided copper-clad laminate P is etched to form a circuit pattern 11 including a loop antenna 10a, and essential electronic components are mounted on this circuit pattern 11 to form a transmission control circuit 0 ( (see the same figure). Then, a conductive shield lla is formed on the back side of the laminate P, leaving a portion of the steel foil except for the loop antenna lOa formed on the front side (see the same figure).

In the example shown in FIG. 108, a conductive shield is formed using a single-sided steel clad laminate P'.

The transmission system W circuit 10 consists of a u f attached to one side of an insulating board.
/? A circuit pattern is formed by etching, and necessary electronic components are mounted to form the transmitting circuit section 10 (see Figure A).

- On the other hand, since fJI4V3 is not attached to the back side of the single-sided steel-clad laminate P', another copper foil is attached to the portion where the loop antenna lOa is not provided to form the conductive shield plate 11a.

Figure 11 is a spectrum showing the oscillation frequency and the electrical W intensity of spurious radiation when the above-mentioned conductive shield is not installed on the circuit board, and Figure 12 is a spectrum showing the electric W intensity of spurious radiation when the above-mentioned shield plate is installed on the circuit board. shows the spectrum of

From the comparison of these areas, when a conductive shield is installed,
It can be seen that this is effective in reducing spurious radiation.

When processing a copper-clad laminate and mounting a transmission control circuit on a circuit board, such a conductive shield is attached to a steel plate with a reduced number attached to the opposite side of the ML where a loop antenna is formed by a conductive pattern. It can be easily formed by leaving the foil as is.

Fig. 13 assumes an example in which the system of the present invention is applied to a control system for a garage shutter. is used, and the control operation switch for the eight wireless transmitters is one
), down (DOWN), and stop (STOP), and the garage can be ejected by raising and lowering a shutter (not shown) by remote control.

Table 1 is a correspondence table showing the relationship between the ringing tone output of the audio signal generation circuit and the transmission data transmitted from the wireless transmitter when the wireless system is applied to the chime.

In AI, the transmission data has a 3-bit configuration from TO to T2, and the combination of these 3-bit data determines the PO of the I10 boat (not shown) connected to the CPU.
The sound signal generation circuit 25 is generated by combining the outputs of RTI~3.
The tone pattern of the call α outputted from the speaker 25a is changed into four types through the switch 25a, and this tone pattern is set by the switches SW1 to SW3 provided on the side of the transmitter A described above. The structure is as follows.

Table [Effects of the Invention] The card-type wireless transmitter of the present invention has a loop antenna constituted by a conductive pattern and a transmission control circuit equipped with a control operation switch, and is powered by a battery. is a base plate part, and a cover plate part having a push button corresponding to the above-mentioned feed (Nf control road roadside control operation switch) is integrally incorporated on the base plate part, The ID code is set by selectively interposing the conductive line derived from the IC chip etc. mounted on the above-mentioned GA board on the chip, or by cutting or shorting the jumper wire. In addition, the structure includes an insulating sheet for setting sound patterns that selectively regulates the contact between the battery pole surface and the conductive pattern formed on the circuit board side, so it is smaller and thinner than ever before. Card type wireless transmission (1
Equipment can be provided.

[Brief explanation of the drawing]

The first factor is an explanatory diagram of the exploded structure of the card type wireless transmitter of the present invention, Figure 2 is an example diagram of an insulating seal, and Figure 31! I is a diagram showing the types of insulation seals, FIG. 4A. 48C21 is an example of the key top piece formed on the cover plate, FIGS. 5Δ and 5B are operation explanatory diagrams of the key top piece, FIG. 8 is a diagram showing an example of ID code settings adopted in the present invention, and FIG. 8 is a configuration diagram of a transmission control circuit of a wireless transmitter.
The ninth leap is the feed (N) used in the system of the present invention.
Data format, Figure 10 is a configuration diagram of the oscillation circuit included in the wireless transmitter of the wireless transmitter, Figure 1
0 A, 10B [7J is an explanatory diagram of the manufacturing procedure of the conductive shield plate, 11th and 1. FIG. 12 is a graph of oscillation frequency versus field strength to explain the effect of the conductive shield plate. FIG. 13 is an example of the wireless transmitter of the present invention applied to the shutter raising/lowering control of a garage, and FIG. 14 is an explanatory diagram of a conventional wireless transmitter having a three-piece structure equipped with a dip switch.

Claims (1)

[Claims] 1) A loop antenna constituted by a conductive pattern;
A base plate includes a circuit board on which a transmission control circuit with a control operation switch is mounted and is powered by a battery.
A cover plate part having a push button corresponding to the control operation switch on the transmission control circuit side is integrally incorporated on the base plate part, and the ID code of the wireless transmitter is
In a card-type wireless transmitter that is set up by selectively interposing a conductive line led out from an IC chip or the like mounted on the circuit board, or by cutting or short-circuiting a jumper wire, the battery A card-type wireless transmitter having a configuration in which an insulating sheet for setting a sound pattern is interposed to selectively define contact between the pole surface of the circuit board and a conductive pattern formed on the circuit board side. 2) The wireless transmitter according to claim 1, wherein the sound pattern setting insulating sheet has a display corresponding to the sound pattern in advance.