DE1062283B - Telephone set, in particular home telephone for two positions of use - Google Patents

Description

The invention relates to a telephone set, in particular a home telephone for two positions of use, with a housing in the longitudinal direction covering handset according to patent application A 27346 VIII a / 21 a *.

The main patent application is the task of creating a small handy telephone set based on the handset in both positions of use a secure support and system the housing ensures that its switching contacts and hook switch are simple and functionally reliable and which allows quick assembly of all parts. This is indicated in the main patent application marked special design of the housing and the contact surfaces for the Handset reached.

In the arrangement of the main patent application, however, is in the middle of the housing between the two Support surfaces for the handset, a cover adapted to the shape of the housing to accommodate the Control buttons let in and the protruding edge of the lid from the inside with the help of a The housing knobs are supported against the counter-bearing plate, which is used to hold all switching means, against the Housing pulled.

The invention makes it its task to simplify the housing and thereby the whole Make telephone even cheaper. The previous case with the cutout for the Lid and the lid itself require two different tools, the one for the Housing becomes very expensive. The omission of a fixed base plate can also be used for wall mounting of the telephone set make it difficult to connect the supply lines due to inexperienced forces. These disadvantages can be avoided if, in a known manner, a uniform housing without special Cover and a switch plate separate from the housing are provided. Then surrender but again difficulties for the simple installation of the buttons. The invention achieves the elimination of the listed disadvantages of the main application in that between the two bearing surfaces for the Handset inserted in a recess of the housing made of one piece of control buttons a contact plate fastened directly to the underside of the housing act, which is one of the maximum number of buttons that may be used, corresponding number of finger-like buttons directly adjacent to the buttons Contact strips, the contacts associated with an inserted into the housing when the buttons are pressed Control switch plate, and also with a when inserting the switch plate in the housing with a switching element of this switch telephone set,

especially home telephones

for two positions of use

Addition to patent application A27346 Villa / 21a ²
(Interpretation document 1058 561)

Applicant:

General telephone factory,
Deutsche Telephonwerke G. mb H. & Co., Hamburg 11, Admiralitätstr. 71/72

Ernst Pielot, Schwarzenbek,
has been named as the inventor

plate cooperating contact tongue is provided.

The advantage of this arrangement lies primarily in the cheaper tool costs for the continuous housing and in a simpler storage. The middle part of the housing can, as before, the Cover equipped with a number of non-through holes corresponding to the final version be drilled out as needed. In addition, the advantage of the contact plate with its common Maintain grounding.

Another embodiment of the invention relates to the interaction of the control buttons with the Contacts on the switch plate. In the previous arrangement, the control buttons are directly above the Contacts arranged. Due to contamination or oxidation of the contact plate or the contacts there is a risk that the contact resistance will be too high and there will be no conductive connection more comes about. To eliminate this deficiency are in a further development of the invention the axes of the operating buttons and of the contacts arranged on the switch plate laterally to one another offset. With this arrangement, each time the operation buttons are depressed, it occurs on the contact plate between the relevant contact strip and the contact on the switch plate a sliding friction that is sufficient to safely clean the contact surfaces.

Due to the arrangement of the contact plate previously attached to the switch plate directly on the device

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housing and by the additional contact element on the switch plate, which with the contact tongue in Connection is, the switch plate itself only needs to be changed insignificantly, it is therefore also not the subject of the invention.

As an exemplary embodiment of the invention, a housing for a home telephone with two positions of use is provided shown, which is equipped with only five buttons with a final expansion of ten control buttons is. ίο

Fig. 1 shows the housing in section and

Fig. 2 is a view from below against the housing with a plan view of the contact sheet.

In the one-piece housing is in the middle part of the housing between the support surface 5 a recess 42 for the earpiece 2 and the support surface 7 for the sounding 6 of the handset 1 intended. Here are five through holes 20 for receiving the control buttons 11 and five Non-through holes 21 are available, which are drilled open as required when the system is expanded can be. The control buttons are secured against falling out by spring washers 43. With two screws 44, the contact plate 15 is screwed from below against the housing, whereby the Contact strips 22 are horizontal in their rest position and are in direct contact with the control buttons 11. In addition to the contact strips 22, the contact sheet 15 also has a contact tongue 45 which slopes downwards is bent and when assembling the telephones with the only indicated switch plate 12 is pressed against a switching element, not shown. The dash-dotted lines in the Fig. 1 show the support of a contact strip 22 on the corresponding contact 18 of the switch plate 12 and the laterally offset arrangement of the control buttons 11 in relation to the contacts 18.

Claims (2)

Patent claims: 1. Telephone, in particular home telephone for two positions of use, with one handset according to patent application A 27346, which covers the housing in the longitudinal direction VIII a / 21 a 2, 20/01, characterized in that between the two bearing surfaces (5, 7) for the Handset (1) inserted into a recess (42) of the housing made from one piece of control buttons (11) act on a contact plate (15) attached directly to the underside of the housing, the one corresponding to the maximum number (e.g. ten) of possible keys (11) that can be used Number of finger-like contact strips (22) resting directly on the keys, the when the buttons are actuated, associated contacts (18) of a switch plate inserted into the housing (12) control, and also with one when inserting the switch plate (12) into the housing with a switching element of this switch plate (12) cooperating contact tongue (45) is provided. 2. Telephone according to claim 1, characterized in that the axes of the control buttons (11) and on the switch plate (12) arranged Contacts (18) are laterally offset from one another. Considered publications:
Swiss Patent No. 16 143;
U.S. Patent Nos. 2,273,530, 2,699,469. 1 sheet of drawings . 909 579/292 7.59