JP3031342B2 - Hands-free intercom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hands-free intercom capable of communicating with a partner device (such as a door phone slave unit or an intercom master unit) without a handset.

[0002]

2. Description of the Related Art As a conventional hands-free intercom, for example, there is one shown in FIG. The hands-free intercom is configured such that a call circuit 101 is formed by pressing a call button 101 after a ringing sound from a partner device (a door phone slave unit, an intercom master unit, etc.). (Not shown) to the housing 10
0, and then the built-in speaker 10
2. It is possible to make a call with the partner device via the microphone 103.

By the way, an advantage of the hands-free intercom is that it is not necessary to have a handset, so that a call can be made even if both hands are closed during work.
It is desirable that the call button 101 has a shape as large as possible so that a pressing operation can be easily performed even with an elbow or the like. However, in the hands-free intercom shown in FIG. 10, since the call button 101 is only large enough to be pressed with a finger, it is very difficult to perform a push operation with both hands closed.

In order to solve the above-mentioned problem, the present applicant has proposed a hands-free intercom having a flat-type talk handle and a thin talk button, as disclosed in Japanese Patent Application No. Hei.
No. 292283. The configuration of the handsfree intercom is shown in FIGS. FIG.
FIG. 9 is a front view showing a state where the surface-type call handle 51 is detached from the housing 50, and FIG. 9 is a side sectional view showing a state where the surface-type call handle 51 is attached to the housing 50.

A window hole 52 is formed in the front surface of the housing 50, into which a surface-type communication handle 51 is fitted. The surface-type communication handle 51 is fixed to the upper edge of the window hole 52 (handle-side screw hole). 51a, a support frame piece 53 to be screwed and fixed in the support frame one side hole 53b is extended. The seam between the window hole and the support frame piece 53 is formed by elastically deformable curved portions 53a, 53a.
Thereby, the surface type call handle 51 is provided with an elastic force for a pressing operation to give a click feeling. By fitting the surface-type call handle 51 into the window hole 52, the surface-type call handle 51 can be attached to be substantially flush with the surface of the housing 50 or in a curved state corresponding to the curve of the surface of the housing 50, without using a spring. The support frame piece 53 can apply an elastic force to the pressing operation.
When the surface-type communication handle 51 is pressed, the surface-type communication handle 51 presses a contact (not shown) built in the housing 50. Further, the surface-type call handle 51 is provided with a locking claw 5 integrally provided at the other end.
1 is detachably engaged with the peripheral portion of the window frame 52, so that the elasticity of the curved portions 53a, 53a restricts a certain amount of displacement in a direction opposite to the inside of the housing 50, and The step portion 54 provided on the peripheral edge of the window hole 52 limits the displacement of the housing 50 in the inward direction by a certain amount or more.

[0006]

By the way, in the above-mentioned conventional example, since the support frame piece 53 and the curved portions 53a, 53a are molded integrally with the housing 50 by a resin, the surface-type telephone handle 51 is not used. In order to mount the housing 50 substantially flush with the surface of the housing 50 or in a curved state corresponding to the curve of the surface of the housing 50, the positional relationship between the surface of the housing 50 and the support frame piece 53 must be set extremely accurately. However, according to the mold integral molding,
If the housing molded product is taken out before the resin is completely solidified, the support frame piece 53 hangs down due to its own weight, and the curved portions 53a, 53a are deformed accordingly. The positional relationship with the piece 53 is out of order.
When the telephone is attached to the housing 50,
Sunk from the surface of the housing 50 and was not flush. Of course, if the housing molded product is left in the mold until the resin is completely hardened, the productivity is significantly impaired, and the support frame piece 53 itself is supported by a jig for each housing. However, it is not preferable to wait until the resin completely hardens, because productivity is significantly impaired.

[0007] Further, the surface type telephone handle 51 is attached to the support frame piece 53.
However, the work required to fix the screws was not so good.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a hands-free intercom having a configuration of a surface-type talk button which is excellent in mold molding productivity and assemblability. To provide.

[0009]

According to a first aspect of the present invention, there is provided a housing including a communication circuit for forming or interrupting a communication state with a partner device by driving a contact. A hands-free intercom comprising: a surface-type call handle that drives the contact point by performing a pressing operation; wherein the surface-type call handle includes a surface-type pressing portion and one end of the surface-type pressing portion. And an elastically deformable elastic piece provided integrally therewith,
The elastic small piece portion has a tip abutting on the inner surface of the housing, and the surface type pressing portion is urged in a direction opposite to the housing inward direction by the elasticity of the elastic small piece portion. is there.

[0010]

[0011]

1 to 7 show one embodiment of a hands-free intercom according to the present invention. Hereinafter, the present invention will be described with reference to one embodiment.

FIG. 1 is a partially exploded perspective view of a hands-free intercom according to an embodiment of the present invention. FIG. 2 is a side sectional view of the hands-free intercom. FIG. 7 is a front view of the hands-free intercom 1 and a diagram showing a state where peripheral devices are connected.

[0013] Hands-free intercom 1 of the present embodiment
Can be connected to security devices such as a gas sensor, an external emergency button, and a fire detector (not shown), in addition to a communication device such as a door phone slave unit or an intercom master device (not shown). It is configured to receive an emergency signal from the security device and emit an alarm sound from the built-in speaker 3 or an additional speaker connected separately. An emergency button 4 is also provided on the hands-free intercom 1 itself. When the emergency button 4 is pressed, an alarm sound is emitted from the speaker 3. As in the case of the conventional hands-free intercom, a board 7 having a communication circuit for controlling a communication state with the partner device is built in the housing 2, and after a ringing tone from the partner device, a call button is provided. When the built-in light emitting diode 9 emits light by pressing the button 5, a communication state with the partner device is formed, and the speaker 3 communicates with the partner device via the microphone 6 provided on the lower surface of the housing 2. Is available. When the call button 5 is depressed in the call state, the light emitting diode 9 is turned off and the call circuit cuts off the call state with the partner device and ends the call. Each time the contact 8 mounted on the substrate 7 is driven, the communication circuit forms / blocks a communication state.

The contact 8 is driven by a pressing operation of a surface-type communication handle 10 provided on the front surface of the housing 2. The communication between the surface-type communication handle 10 and the contact 8 is performed. Button 5 is formed.

The emergency button 4 includes a translucent pressing portion 4c,
A spring member 4b for supporting the pressing portion 4c;
The light emitting diode 4a is positioned behind the emergency button 4. When the pressing portion 4c of the emergency button 4 is pressed, the light emitting diode 4a lights or blinks.

Next, the configuration of the call button 5 according to the present invention will be described in detail. FIG. 3 is a side sectional view (a) showing a state in which the surface type telephone handle 10 is attached to the housing 2.
FIG. 4B is a cross-sectional view taken along line CC of FIG. 3A, and FIG.
It is A sectional drawing (a) and BB sectional drawing (b). FIG. 5 is a front view showing a state in which the surface-type communication handle 10 is detached from the housing 2. FIG. 6 is a front view (a), a rear view (b), and a side sectional view (c) of the surface-type communication handle 10. ).

The surface-type telephone handle 10 includes a rectangular surface-type pressing portion 10a and a resiliently deformable curved elastic piece portion 10 integrally provided at one end of the surface-type pressing portion 10a.
b, 10b, a locking claw 10c integrally provided at the other end of the surface-type pressing portion 10a, a connection protrusion 10d for transmitting the pressing force of the surface-type pressing portion 10a to the contact 8, The housing 2 is provided with a square-shaped fitting step portion 11 on the front surface of the housing 2 for fitting the surface-type pressing portion 10a. The fitting step 11 has a bottomed shape, and its peripheral edge is formed with through holes 12, 12 through which the elastic small pieces 10 b, 10 b penetrate, and the locking claw 10 c so as to be detachable. And a claw receiving portion 13 for stopping.

The surface type telephone handle 10 has an optical window 10e for transmitting the light of the light emitting diode 9, and inelastic pieces 10f, 10b beside the elastic pieces 10b, 10b.
f, and an inelastic fulcrum projection 10g opposing the fitting step 11. At one end of the fitting step 11, a groove-shaped projection receiving portion 11a for pivotally supporting the fulcrum projection 10g is provided.

The surface-type pressing portion 10a is not limited to a square shape, but preferably has a size and a shape that can be easily pressed by an elbow or the like. Further, the elastic piece portion 10b is not limited to the curved shape,
Any shape that can be elastically deformed, such as a U-shape or a U-shape, may be used.

Further, the fitting step 11 is provided with the surface type telephone handle 1.
0 is restricted so as not to be displaced more than a predetermined amount into the housing 10. The shape is not limited to a bottomed shape, and only the peripheral edge may be formed in a step shape, and the center may be formed in a through hole shape. In addition, a configuration in which the through holes 12, 12 and the claw receiving portion 13 are omitted may be employed.

In order to fit the surface-type telephone handle 10 having the above structure to the fitting step 11, the elastic small parts 10b, 10b and the non-elastic pieces 10f, 10f of the surface-type telephone handle 10 are fitted.
Into the through-holes 12 provided in the housing 2 so as to penetrate the housing 2 as shown in FIG.
And the locking claw 10c of the surface-type telephone handle 10 is further locked to and detachably from the claw receiving portion 13 on the peripheral edge of the fitting step portion 11. At this time, the elastic small pieces 10b, 10
b, an elastic force is generated to urge the surface-type communication handle 10 in a direction opposite to the inner direction of the housing, and the locking claw 10c is locked to the claw receiving portion 13 so that the elastic communication handle 10 is moved to the opposite side. It is restricted so as not to be displaced in the direction beyond a certain amount.

In this state, when the surface type pressing portion 10a of the surface type talking handle 10 is pressed, the elastic small portions 10b, 1
0b is elastically deformed, and further elastic force is applied to the surface-type pressing portion 10a. When the pressing force is removed from the surface-type pressing portion 10a, the elastic small portions 10b, 10b return to the original state due to the elastic restoring force.

The non-elastic pieces 10f, 10f are provided on the surface type telephone handle 10 (as viewed from the side of the housing 2).
It becomes a fulcrum of the angular rotation, and the fulcrum rotation of the handle 10 can be stabilized. Similarly, the fulcrum projection 10g also serves as a fulcrum for angular rotation of the surface-type communication handle 10 (as viewed from the side of the housing 2), and the fulcrum rotation of the handle is stabilized. still,
As in the present embodiment, both the inelastic piece portions 10f, 10f and the fulcrum projection 10g may be used in combination, or only one of them may be provided. If neither is provided,
Since only the elastic pieces 10b, 10b serve as fulcrums for angular rotation, the angular rotation is slightly unstable.

Hands-free intercom 1 having the above configuration
In the manufacturing process, the surface type telephone handle 10 and the housing 2 are separately molded integrally with a mold.
Since the elastic small pieces 10b, 10b are integrally formed on the side of the surface-type telephone handle 10, the elastic small pieces 10b, 10b
Since the weight b does not become too heavy, even if the molded product is taken out in a state where the resin is not completely solidified during the integral molding of the mold as in the conventional example, the elastic small pieces 10b, 10b
b does not sag and is not deformed, and is excellent in productivity.

Further, the surface type telephone handle 10 is connected to the housing 2.
Since there is no need for fixing work such as screws when attaching to the product, productivity is excellent.

[0026]

According to the first aspect of the present invention, when the surface-type telephone handle is mounted on the housing, the surface-type telephone handle can be mounted flush without sinking from the housing surface. The productivity is also improved without the molded product being deformed even during the molding of the molded product.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a side sectional view showing an embodiment of the present invention.

FIGS. 3A and 3B are side cross-sectional views showing a state in which the surface-type telephone handle 10 is attached to the housing 2 in the embodiment of the present invention, and FIG.

4A is a sectional view taken along line AA of FIG.
FIG. 3B is a sectional view taken along line BB of FIG.

FIG. 5 is a front view showing a state in which the surface-type call handle 10 is removed from the housing 2 in the embodiment of the present invention.

FIG. 6 is a front view (a), a rear view (b), and a side sectional view (c) showing the surface type telephone handle 10 of the embodiment of the present invention.

FIG. 7 is a front view showing the hands-free intercom 1 according to the embodiment of the present invention, showing a state where peripheral devices are connected.

FIG. 8 shows a conventional housing 50 and a surface-type call handle 5;
FIG.

FIG. 9 is a side sectional view showing a case in which a surface-type call handle 51 is attached to a housing 50 in a conventional example.

FIG. 10 is an external view showing another conventional example different from the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hands-free intercom 2 Housing 8 Contact point 10 Surface type handle 10a Surface type pressing part 10b Elastic small piece part 10c Locking claw part 10f Inelastic piece part 10g Supporting point part 11 Fitting step part 11a Projection receiving part

Claims (1)

(57) [Claims] 1. A hand comprising: a housing containing a communication circuit for forming or interrupting a communication state with a partner device by driving a contact; and a surface-type communication handle for driving the contact by pressing. In the free intercom, the surface-type call handle includes a surface-type pressing portion and an elastically deformable elastic piece integrally provided at one end of the surface-type pressing portion. The hands-free intercom is characterized in that the front end thereof abuts on the inner surface of the housing, and the surface-type pressing portion is urged in the direction opposite to the inner direction of the housing by the elasticity of the elastic small piece portion.