JPS6221464B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an acoustic coupling device for acoustically coupling the handset and receiver of a telephone set in data communication equipment using a communication line. Regarding improvements to the mounting structure of.

In recent years, in the manufacturing of various devices, efforts have been made to reduce assembly man-hours, reduce the number of parts used, etc., and reduce manufacturing costs. The installation work required a particularly large amount of man-hours, which was a major obstacle to cost reduction.

Generally, this type of acoustic coupling device is constructed so that a transmitter/receiver is engaged with a cup-shaped receiving portion made of soft synthetic resin material, rubber, or the like. In the conventional device, the structure for attaching the transmitter/receiver receiving part to the housing is to integrally form a continuous support piece on the outer periphery of the receiving part, and screw this support piece to the housing. The receiver was fixed to the housing. However, in this type of conventional device, in order to securely fix the receiving portion in position, it is necessary to perform screwing work at at least two locations, front and back. It is troublesome to align the screw holes on both sides to secure the screws. There are problems such as the use of screws and the need for a large number of parts, and it is desired to have a structure that can solve these problems.

In order to eliminate such drawbacks, the present invention forms a plurality of mounting pieces on the handset receiver, and
A notch corresponding to the mounting piece is provided in the opening of the housing into which the receiving part is inserted, and a fitting groove for locking the mounting piece is formed on the back surface of the housing. The present invention provides an acoustic coupling device that allows a receiver to be easily and reliably fixed by a one-touch operation of inserting the receiver into an opening of a housing and rotating the receiver.

1 to 5 show an embodiment of the acoustic coupling device according to the present invention, in which FIG. 1 is an exploded perspective view showing the mounting structure of the transmitter receiver section viewed from below, and FIG. Figure a is a sectional view of the receiving part, Figure 2 b is a plan view of the housing to which the receiving part is attached, viewed from above, Figure 3 is an operation explanatory diagram for explaining the mounting operation of the receiving part, and Figure 4 5 is a sectional view showing a state in which the transmitter and receiver are coupled to a receiver fixed to the housing, and FIG. 5 is a bottom view of the receiver with the receiver attached, viewed from below the housing.

In these figures, A is a cup-shaped receiver made of a flexible elastic material such as a soft synthetic resin or rubber. And this receiving part A
The speaker case 1 formed inside the lower part of the
The speaker 2 is fitted. In addition, the receiving part A
A continuous step portion 4 is provided on the lower surface 3 of the device, and four mounting pieces 5 are formed on the step portion 4 and protrude in the radial direction. This mounting piece 5 is integrally molded with the receiving part A from a flexible elastic material, and there is a gap H between this mounting piece 5 and the lower surface 3 of the receiving part, which is slightly larger than the plate thickness H of the casing B, which will be described later. ' is formed. Note that 6 in the figure is a lower circumferential stepped portion integrally formed with the receiving portion A, which has the speaker case 1 inside thereof and holds the speaker 2.

Moreover, B is a housing of the acoustic coupling device, and an opening 20 into which the lower part of the receiving part A is inserted and held is bored. And around this opening 20,
Four notches 21 are provided at positions corresponding to the mounting pieces 5.
is cut out so that the mounting piece 5 can be inserted.

Furthermore, as is clear from FIG. 1, a plurality of locking protrusions 22 are provided on the back surface of this housing B, and these locking protrusions 22 allow the mounting piece 5 to
A fitting groove 23 for fitting and locking is formed.

To explain this in detail, the locking protrusion 22 is composed of an inclined angle 22a that gently slopes up from the side 21a of the notch 21 and a vertical vertical surface 22b. A locking groove 23 is formed in the. That is, a fitting groove 23 is formed between the facing vertical surface 22b and a gap into which the mounting piece 5 can be fitted. In this case, according to this embodiment, eight locking protrusions 22 are provided on the back surface of the housing B adjacent to the side 21a of each notch 21, as shown in the figure. Four fitting grooves 23 are formed, the same number as the mounting pieces 5.

Next, the operation of attaching the handset receiver A having the above-described configuration to the housing B will be explained. First, the mounting piece 5 of the receiving part A is positioned on the notch part 21 of the housing B,
After inserting the lower part of the receiving part A into the opening 20, the receiving part A is easily and reliably fixed to the housing B by rotating it appropriately and dropping the mounting piece 5 into the fitting groove 23.

To explain this in detail, when the mounting piece 5 is aligned with the notch 21 and the receiving part A is inserted into the opening 20 of the housing B, the lower surface 5 of the receiving part A comes into contact with the opening peripheral edge 20a and is supported. Ru. And in this state,
The mounting piece 5, the lower circumferential stepped portion 6, and a portion of the speaker 2 are only exposed on the lower surface of the housing B, and the receiving portion A is not fixed.

Next, move this receiving part A in one direction (center mark X in Figure 1).
direction), the mounting piece 5 located within the notch 21 advances in the direction of the arrow on the inclined surface 22a of the locking protrusion 22 and climbs over the locking protrusion 22, as shown in FIG. Fits into the fitting groove 23. At this time, the other three mounting pieces 5 are similarly fitted into the respective fitting grooves 23, and as a result, the receiving portion A
is in a state where its lower part is locked to the housing B at four locations, and the position is reliably fixed.

During the mounting operation, as mentioned above, the gap H' between the mounting piece 5 and the lower surface 3 of the receiver is set to be slightly larger than the thickness H of the housing plate, so the mounting piece 5 inside the notch 21 is Since the mounting piece 5 is located below the lower surface of the casing B and is made of a material that is easily elastically deformed, the operation of climbing onto the inclined surface 22a is performed smoothly.

Further, in the above description, the present invention is applied to a receiver of a telephone receiver, but the present invention is not limited to this, and it goes without saying that the present invention may be applied to a receiver of a telephone receiver. Furthermore, although the structure in which four mounting pieces 5 are formed on the receiving part A has been described, the present invention is not limited to this. For example, if the number of mounting pieces 5 is increased, the fixation can be made more stable. It is something that

As explained above, according to the acoustic coupling device according to the present invention, by inserting the transmitter/receiver receiving part into the opening of the housing, rotating it, and dropping the mounting piece into the fitting groove on the housing side, the receiving part can be inserted into the housing opening. can be easily and reliably attached to the housing. According to the present invention,
Installation can be completed in one step by simply inserting the receiving part into the housing side and rotating it, making assembly easy and significantly reducing assembly man-hours compared to conventional equipment. Since there is no need for stop prevention parts, the number of parts can be reduced and costs can be reduced, which has great effects.

[Brief explanation of the drawing]

The figures show an embodiment of the acoustic coupling device according to the present invention, in which Fig. 1 is an exploded perspective view showing the mounting groove structure of the transmitter/receiver receiving part as seen from below, Fig. 2a is a sectional view of the receiving part,
Figure 2b is a plan view of the housing to which the receiver is attached, viewed from above; Figure 3 is an explanatory diagram for explaining the attachment operation of the receiver; and Figure 4 is the receiver fixed to the housing. FIG. 5 is a cross-sectional view showing a state in which the transmitter and receiver are coupled to each other, and FIG. A... Transmitter receiver, B... Housing, 3... Lower surface of receiver, 4... Step, 5... Mounting piece, 20... Opening, 21... Notch, 22... Locking Projection, 23...
...Mating groove.

Claims (1)

[Claims] 1. A handset receiver that connects a transmitter or a handset of a handset in a telephone set, and a casing having an opening for accommodating and holding a lower part of the receiver, the lower part of the receiver protruding in the radial direction. A plurality of mounting pieces made of a flexible elastic material are provided so as to have a plurality of mounting pieces, and the periphery of the opening is cut out to correspond to the mounting pieces, and the mounting piece is inserted into the back side of the casing through these cutouts. 1. An acoustic coupling device characterized in that a fitting groove is formed on the back surface of the casing so as to lock the mounting piece in the circumferential direction thereof.