JPH0225585B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a telephone set that prevents the handset from being placed upside down.

Conventionally, in telephones, the earpiece and mouthpiece of the handset have similar shapes and dimensions, and therefore the earpiece and mouthpiece of the base set that come into contact with these during on-hook also have similar shapes and dimensions. It was hot. Therefore, the state in which the handset is placed upright, that is, the state in which the handset is placed on the base set so that the earpiece and the earpiece base are in contact with each other, and the mouthpiece and the mouthpiece base are also upside down state,
In other words, it is possible to place the handset on the base set so that the earpiece and the mouthpiece base are in contact with each other, and the handset and the mouthpiece base are in contact with each other. , it didn't look unnatural because the phones had similar shapes. Also,
Some conventional telephones do not take into consideration the operation of the hook switch when the phone is placed upside down, and in such cases, the on-hook state may not be reached when the phone is placed upside down. As a result, the line may be put on hold in an off-hook state without noticing that it is in an inverted state, or
Another drawback was that even if the line was disconnected, the tone ringer or magnetic bell would not ring. In order to eliminate this drawback, if the handset is placed upside down, the size of the earpiece and mouthpiece should be changed so that the handset is not accommodated in the baseset, and the size of the earpiece and mouthpiece should be changed so that the handset is not accommodated in the baseset. Some also had different mouthpiece sizes.

FIG. 1 is a conceptual explanatory diagram of an example of a conventional reverse installation prevention type telephone, in which 1 shows an inverted state, a is a plan view, b is a side sectional view, and 2 shows an inverted state, and a is a plan view. , b are side sectional views. FIG. 1 shows a state in which a handset in which an earpiece part and a mouthpiece part are integrally provided and a base set in which an earpiece base and a mouthpiece base are integrally provided facing the handset are fitted together. 1 is a handset, 3 is an earpiece, and 5 is a mouthpiece.The handset 1 has a large circumferential earpiece 3 with a central grip part protruding from the side, and a small circumference. A mouthpiece portion 5 of the same size is integrally formed. 6 is a base set, 2 is an earpiece stand, 4 is a mouthpiece stand, and base set 6
The earpiece base 2 has a large inner circumferential dimension and a concave portion that faces the convex parts forming the earpiece part 3 and the mouthpiece part 5 of the handset 1 and fits into the convex parts. A mouthpiece stand 4 is integrally provided. In the above example, the size of the uneven portion where the earpiece portion 3 and the earpiece base 2 fit together is set to be larger than the size of the uneven portion where the mouthpiece portion 5 and the mouthpiece base 4 fit together. Since the dimensions of both the earpiece side and the mouthpiece side are formed to be different, when the earpiece part 3 is placed upright, as shown in FIG. The mouthpiece part 5 is fitted into the mouthpiece base 4. On the other hand, when the
As shown in FIGS. 2a and 2b, the mouthpiece part 5 is connected to the earpiece stand 2.
However, since the earpiece 3 does not fit into the mouthpiece base 4, the handset 1 is tilted and placed in an unnatural state as shown in FIG. 1, 2b. Therefore, the user of the telephone can expect to notice that the handset 1 is in the upside down position and return the handset 1 to the upright position. However, changing the sizes of the earpiece and the mouthpiece has the disadvantage that it may not be desirable from the viewpoint of appearance.

FIG. 2 is a conceptual explanatory diagram of an embodiment of the present invention, in which 1 is an embodiment in which the handset 1 is provided with a recess 8 of the fitting means, and the base set 6 is provided with a convex portion 7 of the fitting means that does not deform. 2 is a side sectional view of an example in which the handset 1 is provided with a non-deformable convex portion 7' of the fitting means and the base set 6 is provided with a recessed portion 8' of the fitting means. FIG. 2 3 is a plan view showing a portion of the fitting means in FIG. In this case, b is a partial plan view showing a state in which the fitting means is provided at a position deviated by a predetermined distance from the straight line connecting the two centers, and the handset 1 is placed on the base set 6 and fitted.

In FIG. 2, 1a and 3a represent the earpiece 3.
A concave portion 8 is provided at a position on the handset 1 where the distance R _H to the end of the mouthpiece 5 is different from the distance T _H to the end of the mouthpiece 5, and a convex portion 7 that does not deform is provided at an opposing position on the base set 6. 2a shows a state in which the convex part 7 is fitted into the concave part 8 in the upright position, and 2a similarly shows the state in which the concave part 8' is provided on the base set 6 and the convex part 7' is provided on the handset 1, and in the upright position. This shows the mated state. In addition, in 3b, the earpiece part 3
A predetermined distance S _H from the straight line connecting the center of the mouthpiece 5 and
A fitting means similar to that shown in FIG. 2 is provided at the disengaged position, and the fitting means is shown to be fitted in the normal position.

In this way, in the upside down state, Figure 2 1b
As shown in FIGS. 2 and 2b, the handset 1 does not fit into the base set 6 and has an unnatural shape, so it is not left as is. Furthermore, even if it is formed as shown in FIG. 2, 3b, although the illustration is omitted, it will be in an unnatural shape, and will not be left unattended.

3 and 4 are perspective views of the first specific embodiment of the present invention, with FIG. 4 showing the inverted state.

In the embodiment shown in FIG. 3, a recess 8 is provided on the handset 1 and a protrusion 7 is provided on the base set 6. As shown in the figure, the distance R _H between the recess 8 on the handset 1 and the end of the earpiece 3 is different from the distance T _H between the recess 8 and the end of the mouthpiece 5. As shown in Figure 4, the handset 1
Since it does not fit into base set 6 and has an unnatural shape, it is not left as is.

FIG. 5 is a perspective view of a second specific embodiment of the present invention, in which a recess having a specific shape is not provided on the handset 1, the dial surface 9 is made deeper than the side surface of the handset 1 and is regarded as a recess, and the base A convex portion 7 is provided on the side of the set 6, and the convex portion 7 fits into the end of the dial surface 9 when the handset 1 is placed upright, but when the handset 1 is placed upside down, the convex portion 7 fits into the end of the dial surface 9. When the handset comes off the handle, it floats up, creating an unnatural shape.

FIG. 6 is a perspective view of a third specific embodiment of the present invention, in the case of a telephone having a triangular cross section when the handset 1 is placed on the base set 6. A fitting means consisting of 8,
From the straight line connecting the centers of the earpiece 3 and the mouthpiece 5,
It is installed by removing it by a predetermined distance S _H , and FIG. 6 shows the state in which it is placed upright, and FIG. 6 shows the state in which it is placed in reverse. In this case, the shapes of the earpiece 3 and the mouthpiece 5,
Even if the shapes of the earpiece base 2 and the mouthpiece base 4 are the same, if they are placed upside down, the convex part 7 and the concave part 8 will not fit together, and the handset 1 will not be horizontal, so it is obvious that they are placed upside down. I understand.

As explained above, when the telephone set of the present invention is placed upside down, the handset fits in the base set unnaturally, so it is not left in that state, and therefore, the handset is not noticed that it is placed upside down. , your line may be put on hold while you are off-hook,
Another advantage is that even if the line is disconnected, the tone ringer or magnetic bell does not stop ringing, and various telephone functions such as making/receiving calls and talking can be used with peace of mind at any time. Note that the present invention has the advantage that it can be applied not only to telephones but also to devices such as intercoms comprising a handset and a baseset.

[Brief explanation of drawings]

Fig. 1 is a conceptual explanatory diagram of an example of a conventional reverse installation prevention type telephone; Fig. 1a is a plan view when placed upright, b is a side sectional view, Fig. 2a is a plan view when placed upside down, and b is a side sectional view. Figure 2 is a conceptual explanatory diagram of an embodiment of the present invention, Figure 1a is a side sectional view of a base set with a convex portion when placed in the normal position, and Figure 1b is a side sectional view when placed upside down. 2a is a side sectional view of the handset with a convex portion when it is placed upright; b is a side sectional view when it is placed upside down; FIG. 2 is a plan view of the fitting means shown in FIG. 1;
1 is a perspective view of a first specific embodiment of the present invention, FIG. 1 is a handset, 2 is a base set, FIG. 4 is a perspective view of the embodiment shown in FIG.
1 is a perspective view of a second specific embodiment of the present invention, FIG. 1 is a handset, 2 is a base set, FIG. 6 is a perspective view of a third specific embodiment of the present invention, and FIG. 2 is a diagram showing the placed state. 2 is a diagram showing the upside down state. 1...Handset, 2...Earpiece stand, 3...
Earpiece section, 4...Mouthpiece stand, 5...Mouthpiece section, 6
...Base set, 7,7'...Protrusion, 8,8'...
...Recess, 9...Dial surface, R _H ...Distance from the recess 8 to the end of the earpiece 3, T _H ...Distance from the recess 8 to the end of the mouthpiece 5, S _H ... The distance away from the straight line connecting the centers of the earpiece 3 and the mouthpiece 5.

Claims (1)

[Scope of Claims] 1. A base set including a handset having an earpiece and a mouthpiece, an earpiece stand for housing the earpiece, and a mouthpiece stand for housing the mouthpiece. A telephone set comprising: when the handset is placed in an on-hook state, on a straight line connecting the center of the earpiece and the center of the mouthpiece on a surface where the handset and the base set come into contact; The fitting of the convex part and the recessed part without deformation occurs at a position where the distance to the end of the earpiece is different from the distance to the end of the mouthpiece, or at a position deviated by a predetermined distance from the straight line connecting the two centers. A telephone set, characterized in that a coupling means is provided opposite the handset and base set.