JPH11214867A - Wireless transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless transmitter wherein a printed board is not exposed even when a cover is removed from a base and reliability is not deteriorated by touch with a finger. SOLUTION: A wireless transmitter includes a base 6, a cover 7, which is removably supported on the front plane of the base, and a printed board whereupon an electronic circuit is mounted and is stored inside. The wireless transmitter 1 transmits a prescribed signal to a receiver by operating operating parts 20a, 20b and 20c. A middle cover which covers the front plane of the printed board is mounted on the base.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a wireless transmitter having a cover detachably fitted to a front surface of a base.

[0002]

2. Description of the Related Art Recently, wireless transceivers can be realized at a relatively low cost, and the use of infrared or radio waves for controlling televisions, VCRs and lighting equipment, or even for reporting devices. With the use of transmission / reception technology, various wireless transmitters called wireless remote controllers have been used. In these wireless transmitters, a cover and a base constitute an outer shell, a printed circuit board on which an electronic circuit is mounted is disposed, and a battery for accommodating a battery as a driving power supply. A storage section is provided.

[0003]

However, in the conventional wireless transmitter, when the cover constituting the outer shell is removed from the base in order to replace the battery or the like, the battery accommodating portion can be replaced with the battery. Is exposed, but even the printed circuit board mounted with the electronic circuit inside is exposed, and when a battery is replaced, human fingers touch the printed circuit board, resulting in a fine electronic circuit. In this case, the reliability of the printed wiring board on which is formed is degraded.

[0004] Therefore, a part of the cover constituting the outer shell includes:
Although a device with a battery cover that can be detached and that only exposes the battery compartment is provided and used, the mold for forming the battery cover becomes complicated, the number of parts increases, and the cost increases. There was a problem that it increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to remove the cover constituting the outer shell from the base and remove the cover from the base. An object of the present invention is to provide an excellent wireless transmitter in which the printed wiring board is not exposed, and the reliability of the printed wiring board is not reduced by the touch of human fingers or the like.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to the first aspect of the present invention, wherein a base, a cover detachably fitted to a front surface of the base,
A printed circuit board mounted with an electronic circuit, wherein the printed circuit board is configured to transmit a predetermined signal to a receiver by operating an operation unit. A middle cover for covering the front surface of the substrate is attached to the base.

According to the second aspect of the present invention, a base, a cover detachably fitted to a front surface of the base,
It is configured to include a printed wiring board mounted with an electronic circuit and housed inside, and a battery storage unit that stores a battery as a power supply, and transmits a predetermined signal to the receiver by operating the operation unit In the wireless transmitter configured as described above, a battery holder is provided on the cover at a position facing the battery storage unit.

According to the third aspect of the invention, there is provided a base, and a cover detachably fitted to a front surface of the base.
It is configured to include a printed wiring board mounted with an electronic circuit and housed inside, and a battery storage unit that stores a battery as a power supply, and transmits a predetermined signal to the receiver by operating the operation unit In the wireless transmitter, a middle cover that covers the front surface of the printed wiring board except for the front surface of the battery storage unit is attached to the base, and a battery holder on the cover faces the battery storage unit. It is characterized by being provided at a position.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a wireless transmitter according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 is a perspective view showing a wireless transmitter, FIG. 2 is an exploded perspective view showing a wireless transmitter, FIG. 3 is a perspective view showing a back surface of a cover of the wireless transmitter, and FIG. 4 is a state where a cover of the wireless transmitter is removed. FIG. 5 is a cross-sectional view of a main part illustrating a locking mechanism between the cover and the base of the wireless transmitter, and FIG. 5 (a) shows a locking relationship between a concave portion and a convex portion. (B) shows another locking relationship.

The wireless transmitter 1 shown in FIG.
With a size of about 0 mm x 60 mm x 15 mm in height, the operation push buttons 20a, 20
b and 20c are each sized to be operated.
The wireless transmitter 1 has three operation push buttons 20a, 20
0b, 20c, and transmits a signal wave W indicating that the user wants to drink "tea" by pressing the operation push button 20a, for example, based on an agreement predetermined according to the operation mode of the site. ) And the operation push button 20
When b is pressed, a signal radio wave W indicating that the user wants to go to the "toilet" is transmitted to a wireless receiver (not shown), and when the operation push button 20c is pressed, the signal radio wave W indicating "call" is transmitted to the wireless receiver (not shown). (Not shown). Then, the wireless receiver (not shown) transmits the signal radio wave W
Each time the signal is received,
For example, a caregiver such as an elderly person is notified by display, characters, voice, or the like.

As shown in FIG. 2, the wireless transmitter 1
Is a decorative plate 2, a cover body 3, and a middle cover 4
And a printed wiring board 5 and a base 6. The decorative plate 2 is made of a flexible and transparent sheet-like material, and has operation push buttons 20a and 20
b, 20c, etc. are printed, and the unprinted portions are substantially rectangular message watermarks 21a, 21b, 21b.
21c and a small oblong illuminated watermark 22.

The cover body 3 is a flat, substantially rectangular box-shaped molded product made of ABS resin or the like and having an open rear surface. The cover main body 3 includes a sticking flat portion 30 for sticking the decorative plate 2. The sticking flat part 30 has openings 31a, 31
b, 31c and an illumination hole 32. Further, the cover body 3 is provided with locking claws 33a, 33b, 33c, 33d, 33e, 33f which are detachably locked to a base body 8 to be described later in the vicinity of the inner corner portion and the vicinity of the middle portion of the long side. Is provided. Further, the cover body 3 has locking projections 34a, 34a on the upper side (on the illumination hole 32 side) of the inner surface of one long side,
Also, locking projections 34b, 34b are provided on the opposing sides, respectively. Further, the cover main body 3 is provided with battery holders 35a and 35b that are erected on the lower inner surface.

The middle cover 4 is a flat, substantially rectangular box-shaped molded product made of ABS resin or the like with an open rear surface, and is formed slightly smaller than the cover body 3. Middle cover 4
Are switch pressing portions 40a, 40b, 40c which are cantilevered structures and can be raised and lowered by rotation about one side, and label attaching portions 41a, 41b, 41c which are fixed planes.
Illuminating hole 42, battery housing opening 43, screw stopper hole 44
a, 44b, 44c, and the temporarily-locking locking steps 45a, 45b.
And locked concave portions 46a and 46b. The locked concave portion 46a is formed as a single depression into which the locking convex portions 34a, 34a fit, and the locked concave portion 46b is formed as the locking convex portion 3.
4b and 34b are formed as one recess to be fitted. In addition, the battery storage opening 43 is sized for two AAA batteries.

The printed wiring board 5 is formed by forming a fine electric circuit by performing an etching process on a copper-clad laminate cut into a substantially rectangular shape, and is slightly smaller than the middle cover 4. The printed wiring board 5 has a buzzer mounting hole 5
0, screw holes 51a and 51b, and positioning holes 52
a, 52b, a positioning notch 53, and escape notches 54a, 54b. Also, on the printed wiring board 5, push button switches 55a, 55b, 55c, light emitting diode 56, dip switch 57, plus electrode 58
a, the minus electrode 58b, etc. are soldered. In addition, the plus electrode 58a and the minus electrode 58
b is soldered from the end of the printed wiring board 5 so as to protrude outward in parallel along the surface of the printed wiring board 5, thereby forming a spiral part in contact with the electrode of the dry battery on the printed wiring board 5. It is located outside.

The base 6 is made of ABS resin or the like, and is a flat, substantially rectangular box-shaped molded product having an open front surface, and is formed in a size exactly corresponding to the cover body 3.
The base 6 includes bending prevention columns 60a, 60b, 60c,
Positioning posts 61a, 61b, positioning ribs 62,
Battery housing 63 and groove-shaped electrode holding grooves 64a, 64b
A buzzer mounting portion 65 which is a cylindrical recess for inserting a buzzer (not shown), set screw holes 66a, 66b, 66c provided with female threads, and an escape space formed as a recess. 67a, 67b, 67c, 67d, 67
e, 67f, temporary fixing locking claws 68a, 68b for locking to the temporary fixing locking steps 45a, 45b, and a cover removing step 69.
And

The decorative plate 2 and the cover main body 3 as described above are formed by attaching the decorative plate 2 to the attaching flat portion 3 of the cover main body 3.
0 to cover 7 as shown in FIG.
become. Then, when the decorative plate 2 is stuck on the sticking flat portion 30, the operation push button 20a of the decorative plate 2 and the message watermark portion 21a are located in the opening 31a, and the opening 31b
The operation push button 20b of the decorative plate 2 and the
1b, the operation push button 20c of the decorative plate 2 and the message watermark portion 21c are located in the opening 31c, and the illumination watermark portion 22 of the decorative plate 2 is located in the illumination hole 32.

The above-described middle cover 4, printed wiring board 5, and base 6 are assembled as follows to form a base body 8 shown in FIG. That is, first, the printed wiring board 5 is placed on the base 6. And base 6
By inserting the tips of the positioning posts 61a and 61b standing upright into the positioning holes 52a and 52b of the printed wiring board 5, and fitting the positioning ribs 62 of the base 6 into the positioning notches 53 of the printed wiring board 5,
At the same time, the spiral portion of the plus electrode 58a projecting from the end of the printed wiring board 5 is placed in the electrode holding groove 64a, and the spiral portion of the minus electrode 58b projecting from the end of the printed wiring board 5 is placed in the electrode holding groove 64b.
Into the printed wiring board 5
Is temporarily fixed to the base 6.

Then, the push button switches 55a, 55b, 5
The front ends of the bending prevention columns 60a, 60b, 60c standing upright on the base 6 just come into contact with the printed wiring board 5 just behind 5c, and the pushbutton switches 55a, 55
b, 55c, the printed wiring board 5
Can be prevented from bending. Further, the buzzer mounting hole 50 of the printed wiring board 5 is located just before the buzzer mounting portion 65 of the base 6, and the screw fixing holes 51 a and 51 b of the printed wiring board 5 are set screw holes 66 of the base 6.
a, 66b.

Thereafter, the middle cover 4 is further placed in front of the printed circuit board 5, and the substantially central portion of each long side of the middle cover 4 is pressed against the base 6 to temporarily fix the temporary fixing step 45a. After being locked to the locking claw 68a and temporarily fixing the locking step 45b to the temporary locking claw 68b,
Screws (not shown) are screwed into the screw holes 44a, 44b, 44c.
And screwed in.

Then, the screw foot of the screw (not shown) inserted into the screw fixing hole 44a penetrates the screw fixing hole 51a, reaches the screw fixing hole 66a, and is screwed.
For the screw (not shown) inserted into the screw fixing hole 44b, the screw foot thereof passes through the screw fixing hole 51b, reaches the screw fixing hole 66b, and is screwed thereto. For the screw (not shown) inserted into the screw stopper hole 44c, its screw foot is
It penetrates the screw stopper hole 51c, reaches the set screw hole 66c, and is screwed. Then, the middle cover 4, the printed wiring board 5, and the base 6 are integrally assembled to form a base body 8 as shown in FIG.

At this time, the switch pressing portion 4 of the middle cover 4
0a, 40b, 40c are push button switches 55a, 55b,
The illumination hole 42 is located immediately before the light emitting diode 56, and the battery housing opening 43 is located immediately before the battery housing 63, just before 55 c. Further, at this stage, for example, a label 9a described as “tea” is attached to the label attaching portion 41a,
The label 9b described as "toilet" is attached to the label attaching section 41.
b, the label 9c described as “call” is attached to the label attaching portion 41c, and two AAA batteries are stored in the battery storage portion 63.

When the cover 7 assembled as described above is put on the base body 8 assembled as described above and pressed so as to be in close contact with each other, the locking claws 33a, 3
The tapered portions at the tips of 3b, 33c, 33d, 33e, and 33f are provided with locking claws 33a, 33b, 33c, 33d, 33, respectively.
e, 33f, which slides on the outer peripheral side surface of the middle cover 4 with the outward bending, and the clearance spaces 67a, 67b, 6
7c, 67d, 67e and 67f. Finally, the locking claws 33a, 33b, 33c, 33d, 33e,
The locking taper portion near the distal end of 33 f is detachably locked to the outer peripheral edge of the middle cover 4, and the locking taper portion of the locking projections 34 a, 34 a of the cover body 3 is a locked recessed portion of the middle cover 4. 46a, locking projections 34b, 34b of cover body 3
Are respectively detachably engaged with the engaged concave portions 46b of the middle cover 4. At this time, the battery holders 35a and 35b of the cover main body 3 are located in front of the battery storage section 63 and securely hold two AAA batteries in the battery storage section 63. Then, the cover 7 is detachably attached to the base body 8, and the wireless transmitter 1 is completed.

FIG. 5 (a) shows a state in which the locking tapered portions of the locking projections 34a, 34a of the cover body 3 are locked in the locked recessed portions 46a of the middle cover 4. I have.
Also, in FIG. 5B, the locking claw 3 of the cover body 3 is used.
3C shows a state where the locking taper portion near the tip of 3c is locked to the outer peripheral edge of the middle cover 4.

In the wireless transmitter 1 completed in this manner, the switch pressing parts 40a, 40b, 40c are located at positions opposing the operation push buttons 20a, 20b, 20c, and the business watermark parts 21a, 21b, The labels 9a, 9b, and 9c attached to the label attaching portions 41a, 41b, and 41c are located at positions opposing to 21c, and the illuminating holes 42 are located at positions opposing the illuminating watermark 22. And
When the user presses, for example, the operation push button 20a with a finger, the wireless transmitter 1 transmits a signal radio wave W indicating that he / she wants to drink “tea” and also transmits the signal radio wave W to the user.
Light emitting diode 56 to recognize that the
Is output from the illuminating watermark unit 22, and at the same time, a ringing sound is output from a buzzer (not shown) mounted on the buzzer mounting unit 65.

When the battery is exhausted and the battery is to be replaced, a finger is hooked on the cover removing step 69 formed at the lower portion of the base 6, and the base body 8 is moved forward on the cover 7.
Applying force to peel from Then, first, the locking claws 33e, 33f come off the outer peripheral edge of the middle cover 4, then the locking claws 33c, 33d come off the outer peripheral edge of the middle cover 4, and then the locking projections 34a, 34a, 34b, 34b is disengaged from the locked concave portions 46a, 46b of the middle cover 4, and finally the locking claws 33a, 33b are disengaged from the outer peripheral edge of the middle cover 4, and finally the cover 7 is completely disengaged from the base body 8 in FIG. And the battery can be replaced.

That is, the wireless transmitter 1 as described above
, The battery holder 35a of the cover 7 itself,
35b firmly holds the dry battery in the battery storage section 63. When the cover 7 is removed from the base body 8, the dry batteries stored in the battery housing 63 are removed from the battery housing 43 of the middle cover 4.
However, since the middle cover 4 covers the printed wiring board 5, human fingers do not touch the printed wiring board 5 at the time of battery replacement, and the reliability of the printed wiring board 5 is improved. Can be prevented from decreasing.

It should be noted that the present invention is not limited to the wireless transmitter used in the above-described task notification device, but may be used for controlling a television, a VCR, and lighting equipment. Needless to say.

[0028]

According to the first aspect of the present invention, since the middle cover is attached to the base so as to cover the front surface of the printed wiring board, the printed wiring board is protected by the middle cover even if the cover is removed from the base. In other words, since a finger of a person or the like does not easily touch the printed wiring board, it is possible to provide an excellent wireless transmitter which is hard to break and has high reliability.

According to the second aspect of the present invention, since the battery holder is provided on the cover at a position facing the battery housing, it is not necessary to separately provide a battery cover on a part of the cover constituting the outer shell, and the number of parts can be reduced. Therefore, there is an effect that it is possible to provide an excellent wireless transmitter which can be reduced in cost by that much.

According to the third aspect of the present invention, the middle cover that covers the front surface of the printed wiring board except for the front surface of the battery housing is attached to the base, and the battery holder is positioned on the cover so as to face the battery housing. Since the printed circuit board is protected by the middle cover even if the cover is removed from the base, human fingers and the like do not easily touch the printed circuit board, so that the printed circuit board is not easily broken and reliability can be improved, and
There is no need to separately provide a battery cover on a part of the cover constituting the outer shell, and the number of parts can be reduced, and the cost can be reduced accordingly.
This has the effect of providing an excellent wireless transmitter.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a wireless transmitter according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the wireless transmitter.

FIG. 3 is a perspective view showing a back surface of a cover of the wireless transmitter.

FIG. 4 is a perspective view showing a state where a cover of the wireless transmitter is removed.

FIG. 5 is a sectional view of an essential part for explaining a locking mechanism between a cover and a base of the wireless transmitter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wireless transmitter 20a Operation part 20b Operation part 20c Operation part 35a Battery holder 35b Battery holder 4 Middle cover 5 Printed circuit board 6 Base 63 Battery storage part 7 Cover

Claims (3)

[Claims] 1. An operation unit comprising: a base; a cover detachably fitted to a front surface of the base; and a printed circuit board mounted with an electronic circuit and housed therein. And transmitting a predetermined signal to the receiver by attaching a middle cover covering the front surface of the printed wiring board to the base. 2. A base, a cover detachably fitted to a front surface of the base, a printed circuit board mounted with an electronic circuit and housed therein, and a battery housing for housing a battery as a power supply. In the wireless transmitter configured to transmit a predetermined signal to the receiver by operating the operation unit, a battery holder is provided on the cover at a position facing the battery storage unit. A wireless transmitter. 3. A base, a cover detachably fitted to a front surface of the base, a printed wiring board mounted with an electronic circuit and housed therein, and a battery storage unit for storing a battery as a power supply. In a wireless transmitter configured to transmit a predetermined signal to a receiver by operating an operation unit, the wireless transmitter includes a front surface of the printed wiring board except for a front surface of the battery storage unit. A wireless transmitter, wherein a cover is attached to the base, and a battery holder is provided on the cover at a position facing the battery housing portion.