WO1982002989A1 - Hook switch for a telephone instrument of single body type - Google Patents
Hook switch for a telephone instrument of single body type Download PDFInfo
- Publication number
- WO1982002989A1 WO1982002989A1 PCT/SE1982/000030 SE8200030W WO8202989A1 WO 1982002989 A1 WO1982002989 A1 WO 1982002989A1 SE 8200030 W SE8200030 W SE 8200030W WO 8202989 A1 WO8202989 A1 WO 8202989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- instrument
- hook switch
- rack
- actuating means
- actuating
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/04—Supports for telephone transmitters or receivers
- H04M1/06—Hooks; Cradles
- H04M1/08—Hooks; Cradles associated with switches operated by the weight of the receiver or hand-set
Definitions
- the invention relates to a telephone instrument of single body type comprising actuating means protruding through the bottom surface of the instrument for actuating the hook switch of the instrument by means of a support on which the instrument is placed after a call, said protruding actuating means comprising parts distributed along the periphery of the bottom surface, each part cooperating with elements actuating the springs of the hook switch for transmitting the movement of the actuating devices to these elements.
- the known arrangement which comprises two longitudinally displaceable arms which through their displacement actuate a rotatable contact element has the disadvantage that the power required to actuate the contact element is relatively great at the beginning of the movement and smallest in the middle of the displacing movement when the contact element consisting of a rotatable arm is perpendicular to the direction of the displaceable arms. In unfavourable cases a locking can occur so that the return spring cannot bring the contact element back to its rest position.
- the object of the invention is to achieve a hook switch function with an even and relatively low operating power.
- By the arrangement according to the invention also easier adjustment, easier mounting and elimination of the risk of self-locking is achieved.
- FIG. 1 shows the arrangement according to the invention with the parts of a telephone instrument necessary to explain the idea of the invention while the other parts have been omitted.
- a long actuating means is designated 10 and two shorter actuating means are designated 11 and 12 which, in a telephone instrument of single body type for example the telephone instrument ERICOFON, protrude through the bottom surface of the instrument (not shown in the drawing) and are pressed into the instrument when placing the same on a support and then actuate elements which in their turn actuate contact springs in the contact device of the instrument.
- Said elements comprise rods 13, 14 rotatable by the actuating means and a rack arrangement 15 displaceable in the longitudinal direction by the rotation of at least one of said rods and having an adjustable rack 24 cooperating with a gear 16 on the camshaft of a camshaft controlled relay 17 known per se.
- the rod 13 cooperates with the actuating means 10 and the rod 14 cooperates with the actuating means 11 and 12 by their arms 20 which are turned when the respective actuating means is displaced vertically.
- the rods 13, 14 are at one of their ends provided with a further arm 21 which at the rotation of the rod displaces the rack arrangement in longitudinal direction against the power of a spring 18.
- the rods 13, 14 are arranged in such a way that the rack arrangement 15 is actuated independently of whether only one of the actuating means or all of them are pushed on.
- the arm 21 of the rod 13 is turned anti-clockwise when the actuating means 10 is pressed inwards and by means of the projection 22 displaces, the rack arrangement against the power of the spring 18. If only one of the actuating means 11 or 12 should be pressed inwards the arm 21 on the rod 14 is turned clockwise and by means of the projection 23 displaces the rack arrangement against the power of th spring 18.
- Figur 2 shows the rack gear-device in a larger scale in side view.
- the rack part 24 is adjustable vertically as well as longitudinally relatively to the supporting part 15 by means of two rotatable eccentrics 25. and 26 which are provided with screwhead grooves or a hexagon head 27, 28 and are engaging oblong holes 29, 30 in the rack 24.
- the hole 29 extends in the longitudinal direction of the rack and the hole 30 in the transversal direction.
- the eccentric 25 displaces at turning the rack transversally to adjust the allowance between the teeth while the eccentric 2 ⁇ displaces the rack longitudinally to adjust the first and the last contact function in the spring group of the relay.
- the fact that the holes are oblong makes it possible to adjust the eccentrics independently of each other.
- the actuating means 10, 11, 12 shall be able to be pressed inwards a certain distance of about 1 mm before the first contact closing of the spring group occurs (protection against unvolontary disconnection of telephone conversations) furthermore it shall be possible after the last contact disconnection to press the actuating means further inwards a certain distance of about 2 mm (secutity margin for interruption of telephone conversations on replacement in case of an uneven support).
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Transmission Devices (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Hook switch arrangement for a telephone instrument of single body type. The arrangement comprises actuating means (10, 11, 12) protruding through the bottom surface of the instrument to actuate the hook switch (17) of the instrument by means of a support on which the instrument is placed after a call. The actuating means cooperate with elements actuating the springs of the hook switch, said elements comprising rods (13, 14) provided with arms (20) to convert the movement of the actuating means to rotating movement and a spring actuated rack arrangement (15) engaging a gear (16) which by its rotation actuates the springs of the hook switch. The rods (13, 14) are provided with further arms (21) which at their rotation by engagement with the rack arrangement displace the same.
Description
HOOK SWITCH FOR A TELEPHONE INSTRUMENT OF SINGLE BODY TYPE.
FIELD OF THE INVENTION
The invention relates to a telephone instrument of single body type comprising actuating means protruding through the bottom surface of the instrument for actuating the hook switch of the instrument by means of a support on which the instrument is placed after a call, said protruding actuating means comprising parts distributed along the periphery of the bottom surface, each part cooperating with elements actuating the springs of the hook switch for transmitting the movement of the actuating devices to these elements.
DESCRIPTION OF PRIOR ART
Arrangements of the mentioned type are previously known, for example from the US patent No 3562447 and are particularly suitable if it is desired to guarantee a correct hook switch function also when the support is uneven.
SUMMARY OF THE INVENTION
The known arrangement which comprises two longitudinally displaceable arms which through their displacement actuate a rotatable contact element has the disadvantage that the power required to actuate the contact element is relatively great at the beginning of the movement and smallest in the middle of the displacing movement when the contact element consisting of a rotatable arm is perpendicular to the direction of the displaceable arms. In unfavourable cases a locking can occur so that the return spring cannot bring the contact element back to its rest position.
The object of the invention is to achieve a hook switch function with an even and relatively low operating power. By the arrangement according to the invention also easier adjustment, easier mounting and elimination of the risk of self-locking is achieved.
The invention is characterized as appears from the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be closer described below by means of an embodiment with reference to the accompanying drawing in which Figure 1 shows the arrangement according to the invention in perspective and Figure 2 shows the rack in side view.
PREFERRED EMBODIMENT
Figure 1 shows the arrangement according to the invention with the parts of a telephone instrument necessary to explain the idea of the invention while the other parts have been omitted. A long actuating means is designated 10 and two shorter actuating means are designated 11 and 12 which, in a telephone instrument of single body type for example the telephone instrument ERICOFON, protrude through the bottom surface of the instrument (not shown in the drawing) and are pressed into the instrument when placing the same on a support and then actuate elements which in their turn actuate contact springs in the contact device of the instrument. Said elements comprise rods 13, 14 rotatable by the actuating means and a rack arrangement 15 displaceable in the longitudinal direction by the rotation of at least one of said rods and having an adjustable rack 24 cooperating with a gear 16 on the camshaft of a camshaft controlled relay 17 known per se. The rod 13 cooperates with the actuating means 10 and the rod 14 cooperates with the actuating means 11 and 12 by their arms 20 which are turned when the respective actuating means is displaced vertically. The rods 13, 14 are at one of their ends provided with a further arm 21 which at the rotation of the rod displaces the rack arrangement in longitudinal direction against the power of a spring 18. The rods 13, 14 are arranged in such a way that the rack arrangement 15 is actuated independently of whether only one of the actuating means or all of them are pushed on. As appears from the drawing the arm 21 of the rod 13 is turned anti-clockwise when the actuating means 10 is pressed inwards and by means of the projection 22 displaces, the rack arrangement against the power of the spring 18. If only one of the actuating means 11 or 12 should be pressed inwards the arm 21 on the rod 14 is turned clockwise and by means of the projection 23 displaces the rack arrangement against the power of th spring 18. Figur 2 shows
the rack gear-device in a larger scale in side view. The rack part 24 is adjustable vertically as well as longitudinally relatively to the supporting part 15 by means of two rotatable eccentrics 25. and 26 which are provided with screwhead grooves or a hexagon head 27, 28 and are engaging oblong holes 29, 30 in the rack 24. The hole 29 extends in the longitudinal direction of the rack and the hole 30 in the transversal direction. The eccentric 25 displaces at turning the rack transversally to adjust the allowance between the teeth while the eccentric 2ό displaces the rack longitudinally to adjust the first and the last contact function in the spring group of the relay. The fact that the holes are oblong makes it possible to adjust the eccentrics independently of each other.
The purpose with the adjustment of the rack is that the actuating means 10, 11, 12 shall be able to be pressed inwards a certain distance of about 1 mm before the first contact closing of the spring group occurs (protection against unvolontary disconnection of telephone conversations) furthermore it shall be possible after the last contact disconnection to press the actuating means further inwards a certain distance of about 2 mm (secutity margin for interruption of telephone conversations on replacement in case of an uneven support).
The advantage of a construction according to the invention compared with the known construction where the camshaft of the relay is actuated by a rotatable arm through a rod mechanism is that the turning moment exerted on the camshaft of the relay does not vary during the rotating movement but is constant and self-locking is prevented.
Claims
WHAT WE CLAIM IS :
1 Hook switch arrangement for a telephone instrument of single body type comprising actuating means (10, 11, 12) protruding through the bottom surface of the instrument to actuate the hook switch (17) of the instrument by means of a support on which the instrument is placed after a call, said protruding actuating means (10, 11, 12) comprising parts distributed along the periphery of the bottom surface, each part cooperating with elements actuating the springs of the hook switch (17) for transmitting the movement of the actuating means to these elements, characterized in that said elements comprise rods (13, 14) provided with arms (20) for converting the movement of the actuating means (10. 11.12) into a rotating movement and a spring actuated rack device (15, 24) engaging a gear (1ό) on a rotatable contact element actuating/when rotating, the springs of the contact switch, the rods (13, 14) being provided each with a further arm (21) which at the turning of the respective rod by engagement with the rack device displaces the same against the power of the spring (18).
2 Hook switch arrangement according to claim 1, characterized in that the rack device comprises a support part (15) and a rack part (24) adjustable relatively to the support part, said rack part being fixed on the support part by means of eccentrics (25, 26) engaging oblong holes (29, 30) in the rack part, so that the "rack part (24) can be displaced transversally as well as longitudinally on the support part (15) to adjust the allowance between the teeth and to adjust the contact function of the spring group respectively.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8282900405T DE3261491D1 (en) | 1981-02-19 | 1982-02-05 | Hook switch for a telephone instrument of single body type |
| FI823368A FI823368A0 (en) | 1981-02-19 | 1982-10-04 | KLYKANORDNING FOER TELEFONAPPARAT AV ENKROPPSTYP |
| DK462382A DK462382A (en) | 1981-02-19 | 1982-10-18 | SINGLE-BODY PHONE FORWARD CONTACT |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8101116A SE425449B (en) | 1981-02-19 | 1981-02-19 | CLUTCH DEVICE FOR ONE-TYPE PHONE DEVICE |
| SE8101116810219 | 1981-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1982002989A1 true WO1982002989A1 (en) | 1982-09-02 |
Family
ID=20343175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SE1982/000030 WO1982002989A1 (en) | 1981-02-19 | 1982-02-05 | Hook switch for a telephone instrument of single body type |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0072813B1 (en) |
| CA (1) | CA1171187A (en) |
| DE (1) | DE3261491D1 (en) |
| DK (1) | DK462382A (en) |
| ES (1) | ES509709A0 (en) |
| IT (1) | IT1153457B (en) |
| NO (1) | NO823411L (en) |
| SE (1) | SE425449B (en) |
| WO (1) | WO1982002989A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696033A (en) * | 1984-01-23 | 1987-09-22 | British Telecommunications Public Limited Company | One-piece telephone hook switch operating mechanism |
| EP0283812A2 (en) * | 1987-03-27 | 1988-09-28 | Alcatel SEL Aktiengesellschaft | Cradle for a coin telephone |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406263A (en) * | 1964-04-01 | 1968-10-15 | Int Standard Electric Corp | Telephone cradle switch arrangements |
| US3562447A (en) * | 1967-10-06 | 1971-02-09 | Ericsson Telefon Ab L M | Hook switch for one-piece standing telephone |
| US4130742A (en) * | 1976-05-03 | 1978-12-19 | Telefonaktiebolaget L M Ericsson | Switch actuator for one-piece telephone |
-
1981
- 1981-02-19 SE SE8101116A patent/SE425449B/en unknown
-
1982
- 1982-02-05 DE DE8282900405T patent/DE3261491D1/en not_active Expired
- 1982-02-05 EP EP82900405A patent/EP0072813B1/en not_active Expired
- 1982-02-05 WO PCT/SE1982/000030 patent/WO1982002989A1/en not_active Application Discontinuation
- 1982-02-15 CA CA000396238A patent/CA1171187A/en not_active Expired
- 1982-02-18 ES ES509709A patent/ES509709A0/en active Granted
- 1982-02-19 IT IT19768/82A patent/IT1153457B/en active
- 1982-10-12 NO NO823411A patent/NO823411L/en unknown
- 1982-10-18 DK DK462382A patent/DK462382A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406263A (en) * | 1964-04-01 | 1968-10-15 | Int Standard Electric Corp | Telephone cradle switch arrangements |
| US3562447A (en) * | 1967-10-06 | 1971-02-09 | Ericsson Telefon Ab L M | Hook switch for one-piece standing telephone |
| US4130742A (en) * | 1976-05-03 | 1978-12-19 | Telefonaktiebolaget L M Ericsson | Switch actuator for one-piece telephone |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696033A (en) * | 1984-01-23 | 1987-09-22 | British Telecommunications Public Limited Company | One-piece telephone hook switch operating mechanism |
| EP0283812A2 (en) * | 1987-03-27 | 1988-09-28 | Alcatel SEL Aktiengesellschaft | Cradle for a coin telephone |
| EP0283812A3 (en) * | 1987-03-27 | 1989-11-15 | Standard Elektrik Lorenz Aktiengesellschaft | Cradle for a coin telephone |
Also Published As
| Publication number | Publication date |
|---|---|
| SE425449B (en) | 1982-09-27 |
| NO823411L (en) | 1982-10-12 |
| IT1153457B (en) | 1987-01-14 |
| EP0072813B1 (en) | 1984-12-12 |
| ES8302978A1 (en) | 1983-01-16 |
| EP0072813A1 (en) | 1983-03-02 |
| IT8219768A0 (en) | 1982-02-19 |
| SE8101116L (en) | 1982-08-20 |
| ES509709A0 (en) | 1983-01-16 |
| DE3261491D1 (en) | 1985-01-24 |
| DK462382A (en) | 1982-10-18 |
| CA1171187A (en) | 1984-07-17 |
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| AL | Designated countries for regional patents |
Designated state(s): CH DE GB NL |
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