FR2480050A1 - TELEPHONE COMBINE, PREFERABLY COMPOSED OF TWO PARTS OF HOUSING COMPRISING AT THE END OF THE EVIDENCE SERVING ACCOMMODATION ACOUSTIC TRANSDUCERS - Google Patents

Abstract

PREFERRED TELEPHONE HANDSET CONSISTS OF TWO PARTS OF A BOX CONTAINING AT THEIR ENDS RECESSES SERVING AS HOUSING FOR ACOUSTIC TRANSDUCERS. THE TELEPHONE HANDSET PREFERABLY CONSISTS OF TWO PARTS OF BOX 1, 2 WHICH FORM A HOLLOW BODY. TWO TUBES CONNECT THE RECESSES 6, 7 PROVIDED FOR THE MICROPHONE AND THE EARPHONE. THIS CONFIGURATION LEADS TO THE FORMATION OF A LARGE OBLONGED OPENING WHICH PREVENTS ACOUSTIC REACTIONS DURING OPERATION. THE DIVIDED HANDLE PART ALLOWS BETTER HANDLING OF THE HANDSET.

Description

"Telephone handset preferably composed of two parts of boot

  having at their ends recesses serving

  from housing to acoustic transducers ".

  The present invention relates to a telephone handset

  preferably composed of two parts of

  carrying at their ends recesses serving as dwellings

to transducers.

  The telephone handset represents a hollow body generally made of thermoplastic material and whose

  middle part preferably serves as a handle during use.

  tion. In the cavity of the handle, for example pass the electrical wires for the connection of the earpiece. Due to the shape and material of the complete handset, reactions

  acoustics (whistling) may occur during

  for example if the handset has been placed on the top

  of a table. In this case, an acoustic bridge is formed.

  To overcome this disadvantage in telephone handsets, various measures are known, for example in the form of damping damping pads and intended

  to receive the acoustic transducers, or a closed cavity

  used to dampen the oscillations and arranged as

flag crowned the microphone.

  US Pat. No. 2,190,467 also discloses a handset with a solid handle whose ends are recessed to receive the earpiece and the microphone. The microphone and the earpiece are held on the handle part by stamped parts which are preferably screwed. In the handle part of the handset are arranged

  rooms with openings. In the description, it is

  discusses mathematical relationships that establish rapport

  between the volume of the rooms and the acoustic reaction.

  To reduce the acoustic response in telephone handsets, German Patent 24 53 185 further discloses a device that mechanically increases the surface of the lower half of the shell of a two-part handset between

  the microphone and the earpiece so that the sound waves

  put to laws of geometric reflection and causing the

  reaction are absorbed and / or diminished in intensity by

  persion. The enlargement of the surface of the handle with allon-

  Simultaneously, the shape of the handset, which, in a known embodiment, has the shape of a broom rather than the bone shape of the known handsets, certainly reduces the hissing tendency, but if the handset is provisionally laid down. on a smooth support, for example a table, it can occasionally

  occur an acoustic reaction caused by this form.

  The object of the present invention is therefore to suppress acoustic reactions by appropriate means.

handsets.

  This result is achieved according to the invention in that a body, preferably composed of two casing parts, has at its ends recesses for housing acoustic transducers, and between these recesses is formed a large opening so that the recesses

are connected by two tubes.

  According to an advantageous characteristic of the invention,

  the handle part of the handset is easy to handle.

  whatever the size of the hand that seizes it.

  The invention will be better understood with the aid of

  description of an embodiment taken as an example, but not limiting, and illustrated by the appended drawing which represents a telephone handset according to the invention, but not the microphone or the earphone which are not essential for the invention, and in which: Figure 1 shows a side view of the telephone handset according to the invention which is preferably composed of two parts of casing, namely the lower part 1 and the upper part 2;

  FIG. 2 shows, viewed from above, the handset

telephone according to Figure 1;

  FIG. 3 represents, seen from below, this same

phone line.

  The lower part 1 of the handset of the telephone handset

  There are recesses 6, 7 for housing the earpiece and the microphone. In the lower part 1 of the casing is advantageously provided for the connecting wire 9 a recess 8 which is in the area of the recess 7 for the microphone. In the area of the edge 12, the upper part 2 of the casing is mechanically connected to the lower part 1, for example by friction bonding or interpenetration. To be able to accommodate the microphone and the earpiece, this upper part 2 of the casing also has recesses 13, 131 which complement those provided in the lower part 1 to receive the earphone and the receiver.

  microphone. The recesses 13, 131 are mutually connected

  dice by hollow parts in the form of half-tubes O10, 11 of

  to form an opening 3 in the part 2 of the casing.

  The recesses 6, 7 of the lower part 1 of the casing are

  also connected by two half-shaped hollow parts

  10O tubes, 110, constituting the opening 3 in the part 1 of the casing. The two parts 1, 2 of the casing can be inclined with respect to a straight line 14 of the angular values

  4, 5 which are chosen according to the ergonomic requirements.

  Half-tubes 10O, 11; 100, 110, have any cross section, but preferably identical, for example round, oval.

  In the assembled state of the telephone handset, the half

  tubes, 10, 11; 10O, 11O form two tubes as well as the large opening 3. During operation of the telephone handset, the sound waves producing the acoustic reactions are disturbed by the openings 3 which also impede the whistling tendency and the whistles themselves. Moreover, it is advantageous for the invention that thanks to the divided part of the handle, the telephone handset can be easily

  manipulated whatever the size of the hand that grips it.

Claims (6)

  Telephone handset, characterized in that a body, preferably consisting of two housing parts (1, 2), has at its ends recesses (6, 7; 13, 13) serving as housings for acoustic transducers, and between these recesses (6,7; 13,131) there is formed a large opening (3) so that the recesses (6,7,13,131)   are connected by two tubes (1O, 11; 100, 110). -   2. Telephone handset according to claim 1, O10 characterized in that the two parts of the casing (1, 2)   are mechanically collected to form a hollow body.   3. Telephone handset according to the claims   1 and 2, characterized in that the lower part (1) of the casing has a recess (8) through which the wire passes. connection (9).   Telephone handset according to claim 1, characterized in that the body of the telephone set for ergonomic reasons forms angles (4,5) by   compared to a straight line (14), in particular at the extreme   are designed to serve as housing for trans- acoustic conductors.   Telephone handset according to claim 1, characterized in that two tubes are formed by half-tubes (10, 11, 10O, 10O).   Telephone handset according to claims 4   and 5, characterized in that the tubes (10, 11; 10O, 100O)   have any cross section, but identical.