IE56490B1

IE56490B1 - A fixed telephone station

Info

Publication number: IE56490B1
Application number: IE1075/84A
Authority: IE
Original assignee: Siemens Ag
Priority date: 1983-05-02
Filing date: 1984-05-01
Publication date: 1991-08-14
Also published as: FI841713A; IE841075L; DE3482848D1; FI78586B; FI841713A0; EP0124105A3; EP0124105B1; AU2754484A; AU567161B2; EP0124105A2; FI78586C

Abstract

1. Fixed telephone station (1) having a mounting (3) for the control equipment (10, 11, 12, 13, 14, 22, 23, 24, 25, 26) removably attached on a base plate (2) via a joint (9, 30), the two parts (2, 3) being connected in the operating state of the telephone station (1) by means of latching arrangement (15, 20) and secured by a lock, characterized in that at least one of the two parts (2, 3) forming the telephone station (1) is pot-shaped and the connection of the two parts (2, 3) is made by a swivel joint (30) which possesses an arched arm (31) of circular cross-section which is connected at its free ends to angled members (32), the free ends (33) of which in turn have journals (34) which engage in bores (35) of angle pieces (36) attached to the base plate (2), a U-shaped support bracket (37) being mounted on the arm (31) to be pivotable and slideable in the axial direction of the arm (31), which arm is rigidly connected to the pot-shaped mounting (3).

Description

The present invention contains a fixed telephone station having a Mounting for the control equipment removably attached to a base plate via a joint, the two parts being connected in the operating state of the telephone station fay means of a latching arrangement and secured by a lock.

Such coin-operated telephones are known, for example, from US-A-3,317,674, it being possible to fit over this coin-operated telephone mounted on a base plate an essentially box-shaped mounting connected to the said base plate via a joint, the said mounting receiving ail the essential control equipment of the coin-operated telephone and being secured in the operating state of the telephone by means of a lock against being forced open by unauthorised persons. 0uch a forcing open results ih the station being unusable for subsequent users, not inconsiderable costs being*' involved in replacing the coinoperated telephone.

The present invention is, therefore, based on the object of constructionally designing a fixed telephone station in such a way that the high degree of security against forcing open is achieved.

According to the invention this object is. achieved in that at least one of the two parts forming the telephone station is pot-shaped end the connection of the two parts is made by a swivel joint which possesses an arched arm of circular cross-section which is connected at ita free ends to angled members, the free ends of which in turn have spigots which engage in bores of angle pieces attached to the base plate, a ϋ-shaped support bracket being mounted on the aza to be pivotable end elideable in the axial direction of the arm, which arm is rigidly connected to the pot-ehaped mounting.

In this design of the parte forming the telephone station, the .said parts can be combined in such a way that they do not provide any point for the application of a tool serving for forcing open. In this arrangement, either the mounting or the base plate can be pot-shaped. - 3 However, it has proven expedient for reasons of easier maintenance, to make the mounting fox the control equipment, such ae for example handset, dialling device etc., pot-shaped, 00 that, for example, in the case of a diec5 shaped design of the base plate attached to a wall, in tha operating state the mounting engages over the said base plate and thus comes to bear directly against the. wall. In the case of the pot-shaped design of one of the ft two parts forming the station, there is namely the problem of providing a connecting element, with which, in the case of the constant guiding and fixing of one off the * two parts, on the one hand latching and unlatching of the two parts in the radial direction can be achieved, and, on the, other hand, lifting off and swivelling off the released part to the attached part in the axial direction can be achieved. Such a connection of the two parts can be made by means of a swivel joint which permits a swivel movement into and out of the latched position as well as swivelling of one of the parts. Such a swivel joint can bs designed, for example, in the aforesaid manner. The latching and unlatching of the two parts can be performed ln a simple manner by pushing the support bracket on the arched arm. Xn this case, the support bracket can be arched in its base region, and in the end region off its two limbs can have circular openings, through which the t arched arm passes.

The detachable latching of the two parts can occur in various ways by means of known connecting techniques, for example bayonet locking. Thus, [lacuna] latch element which constitutes only part of the latch connection can be arranged, for exaaple, on one of the parts, the said latch element bringing about the connection with a pin provided on the other port. However, a precondition for such a connection would he an additional guidance of the parts relative to one another. A simple and quick connection of the parts to one another can he achieved, for exaaple, hy attaching to the base plate a plurality of latch elements which produce the letch connection with pins arranged in corresponding positions - 4 on the mounting. Fox this purpose, the latch elements, can he essentially Ό-shaped, one end region of a limb being angled so as to point towards the other limb and having a wedge-shaped tapering opening. If the mounting having the pins is fitted over the base plate, the pins first pass through the widened region of the opening. On turning the mounting, the mounting is centred due to the wedge-shaped design of the opening and arrives at the latched position in one of the end regions of the open- * ing, the inner width of the said end region approximately corresponding to the outer diameter of the pin. In this position, the pin engages behind the limb bearing the * opening, so that removal of the mounting in the axial direction is no longer possible.

The invention will be explained in greater detail below with reference to exemplary embodiments, in which s rig. 1 shows the telephone station in an opened front view, fig. 2 shows the latch element in a perspective view, Fig. 3 shows the parts forming the latching arrangement in a view at the beginning of the latching process.

Fig. 4 shows the parts forming the latching arrangement in the latched position.

Fig. 5 shows the telephone station in a front view, the mounting being detached from the base plate for reasons of better visibility.

Fig· 6 shows the swivel joint connecting the two parts of the telephone station.

The telephone station 1 illustrated in Fig., l consists of a fixed base plate 2, for example attached to a wall by means of a screw connection, and a mounting 3 pivotably attached to the base plate. The through-holes 4 on the base plate 2 serve for receiving the attaching * elements. The .base plate 2 is designed as a flat disc and bears angle pieces 5 which are arranged off-centre and | at their free end have boxes for receiving the angled free limb , ends 6 and 7 of a U-shaped bracket. This - 5 bracket 9 Ια attached by its arched region 8, which connects the limbs, to the inside of the pot-shaped mounting 3 by means of a retaining part (not shown here).

The pot-shaped mounting 3 accommodates all the 5 control elements of a telephone station. In this cardoperated telephone station illustrated here, only the essential parts such as the handset 10 suspended from an actuating element 11 for the cradle switch, the keyboard if 12, the insert slot 13 for the card and an actuating key 14, by means of which the card is fed to a monitoring and evaluation device, have been illustrated.

The latch elements 15 arranged on the base plate 2, of which a perspective view is shown in Fig. 2, are essentially U-shaped. The end region 16 of the one limb 15 17 is angled in the direction of the other limb 18 and. has a wedge-shaped tapering opening 19. This opening serves for receiving the pins 20 of circular crosssection which are attached to the pot-shaped mounting on its inner surface and point towards one another.

As can be seen from Fig. 3, the pin 20 attached to the mounting first passes through the widened region of the opening 19. By turning the pot-shaped mounting 3 in the clockwise direction (direction of arrow A), the pin 20 is guided into the tapering region of the opening 25 19, so that a centring of the mounting 3 in respect of the base plate 2 occurs. On continuing to turn in the direction of arrow A, the pin 20 comes to hear against the end region 21 of the opening 19 and thereby engages behind the limb 17 which have the opening, so that 30 pulling off of the pot-shaped mounting 3 in the axial direction is ruled out. Final securing of the telephone station and of the latch connection then occurs by means of a lock (not shown here) which is accessible from the outside and prevents the station from being opened 35 counter to its latched position.

The mounting 3 is pot-shaped and accommodates all the control elements of a telephone station. Xn this card-operated telephone station illustrated here, likewise only the. essential parts such as the handset 23 as suspended from an actuating element 22 for the cradle switch, the keyboard 24, the insert slot 25 for the card and the actuating key 26, by means of which the card la fed to a monitoring and evaluation device, have been illustrated.

On the base plate 2 likewise a plurality of latch elements 15 are provided, pins 20 arranged on the inside of the pot-shaped mounting 3 and pointing towards one another passing through said latch elements, at first in their widened region 27 of the opening 28. On turning the mounting in the clockwise direction, the pins 20 are guided into a tapering region 29 of the opening 28 and k thereby engage behind the lirnbof the latch element 15 which defines the opening 28, so that removal of the pot15 shaped mounting in the axial direction ie ruled out.

Final securing of this latching arrangement then occurs by means of a lock (not shown here) which is accessible from the outside and prevents the station from being opened counter to its latched position.

The two parts of the telephone station. 1 are connected to one another by means of the swivel joint 30 illustrated in greater detail in Fig. 6. This swivel joint 30 is formed from an arched arm 31 of circular cross-section, to which the angled members 32 are at25 tached. At their free end 33, the angled members have spigots 34 which engage in bores 35 of angle pieces 36 attached to the base plate 2. On the asm 31 the U-shaped support bracket 37 is in turn mounted to be pivotable and slideable in the axial direction off the arm 31. This support bracket ie arched in its base region 38 and matched to the shape of the Inner wall of the pot-shaped mounting 3. The support bracket can be connected, for example in the region 39, to the inner wall of the mounting 3 fay epot welding at the points 40. Xa the end region of its limbs 41, tbs support bracket 37 has circular openings 42, through which the arched arm 31 passes. A swivel joint of such a design permits, after . the release of the latching arrangement, on the one hand the mounting 3 containing the control elements to te - 7 lifted off fro» the base plate 2 and the mounting 3 to be subsequently swivelled in such a way that it ia located next to the base plate with its rear facing the observer. Xn this position, Maintenance and repair work can be perforaed quickly and easily.

Claims

1. Fixed telephone station having a nounting for the control equipment removably attached to a base plate via a joint, the two parte being connected in the operating state of the telephone station by neane of a latching arrangement and secured by a lock, characterized in that at least one of the two parts forming the telephone station is pot-shaped and the connection of the two parts is mads by a swivel joint . which possesses an arched arm of circular cross-section ' which is connected at its free ends to angled members, the free ends of which in turn have spigots which engage in bores of angle pieces attached to the base plate, a U-shaped support bracket being mounted on the arm to be pivotable and elideable in the axial direction of the arm, which arm is rigidly connected to the pot-shaped mounting.

2. Telephone station according to claim 1, characterized in that the support bracket is arched in its base region, and in the end region of its two limbs has circular openings, through which the arched arm passes.

3. Telephone station according to claim 1, characterized in that the latching arrangement consists. of an essentially U-shaped latch element, one of its two limbs being angled in the end region relative to the other limb and having a wedge-shaped tapering opening through which a pin passes ·

4. A telephone station according to claim 1, substantially as hereinbefore described with particular -r reference to and as illustrated in the accompanying drawings.