AU538372B2 - Creation of Inventions and Patents with Artificial Intelligence

AU538372B2 – A fastening arrangement for holding together the two sectionsof a telephone handset casing
– Google Patents

AU538372B2 – A fastening arrangement for holding together the two sectionsof a telephone handset casing
– Google Patents
A fastening arrangement for holding together the two sectionsof a telephone handset casing

Info

Publication number
AU538372B2

AU538372B2
AU65702/80A
AU6570280A
AU538372B2
AU 538372 B2
AU538372 B2
AU 538372B2
AU 65702/80 A
AU65702/80 A
AU 65702/80A
AU 6570280 A
AU6570280 A
AU 6570280A
AU 538372 B2
AU538372 B2
AU 538372B2
Authority
AU
Australia
Prior art keywords
clamping element
section
fastening arrangement
sections
casing
Prior art date
1980-11-06
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Ceased

Application number
AU65702/80A
Other versions

AU6570280A
(en

Inventor
J.F. Lindberg
C. Stromer
E. Tronslien
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Telefonaktiebolaget LM Ericsson AB

Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1980-11-06
Filing date
1980-11-06
Publication date
1984-08-09

1980-11-06
Application filed by Telefonaktiebolaget LM Ericsson AB
filed
Critical
Telefonaktiebolaget LM Ericsson AB

1982-05-21
Publication of AU6570280A
publication
Critical
patent/AU6570280A/en

1984-08-09
Application granted
granted
Critical

1984-08-09
Publication of AU538372B2
publication
Critical
patent/AU538372B2/en

2000-11-06
Anticipated expiration
legal-status
Critical

Status
Ceased
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Description

A FASTENING ARRANGEMENT FOR HOLDING TOGETHER THE TWO SECTIONS OF A TELEPHONE HANDSET CASING. ”
TECHNICAL FIELD
The present invention relates to a fastening arrangement for holding together two sections of a telephone handset casing.
BACKGROUND ART
It is previously known to construct telephone handsets consisting of two sections, a lower section and an upper section, which are hold to- 5 gether by means of screws in the hand grip to form a complete casing. During mounting, the microphone and the telephone receiver are placed in the Lower section, the upper section hooked over one of the ends of the lower section. The screws in the hand grip are then tightened to press the two casing sections together. When tightening the screws also 10 the microphone and the telephone receiver are pressed towards the bottom of the lower section by means of clamping rings or plates. De¬ pending on the distance between the fastening screw and the end of the casing where the sections are to be pressed together, bending strains with associated cracks can arise.
DISCLOSURE OF THE INVENTION ι
15. The object of the invention is to provide an arrangement eliminating the mentioned bending strains by firmly holding together the distant ends of the sections forming the casing.
The invention is characterized as it appears from the claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described more in detail, by way of example 0 and with reference to the accompanying drawings, in which
Fig. 1 shows one embodiment of a hand set according to the invention just prior to fastening the two casing sections together.
^JHET

Fig 2. shows the same set after fastening the sections together.
Fig 3. shows in cross-section the microphone end of the hand set during mounting.
Fig. shows the same arrangement as Fig. 3 in the mounted state,
Fig. 5 shows the lower section with a clamping plate in plane view partly in section,
and Fig. 6 shows the hand set as seen from the microphone end, partly in section.
BEST MODES FOR CARRYING OUT THE INVENTION
The upper casing section of the handset is designated 1 in Fig. 1 and the lower casing section is designated 2. At one of its short ends the lower section 2 is provided with a groove 3 into which a hook 4 on the upper section can engage so as to provide a pivot point about which the upper section can pivot until the opposite end is in close contact with the end of the lower section.
In previously known handsets, the fastening has been carried out by means of screws which when tightened act to press the two sections together as well as causing a clamping ring or plate to press the microphone and the telephone receiver, respectively, towards the bottom of the lower section. It appears that, when pressing together the ends of the sections by means of the screws, a considerable bending strain arises due to the distance between the screw and the end of the casing. This can result in cracks which can be prevented by a clamping plate 6 which is schematically indicated in Fig. 1 and whose purpose is not on¬ ly to hold the microphone and/or the telephone receiver pressed against the bottom of the lower section, but also to keep the two sections pressed against each other at one of the r ends. The clamping plate or ring has two pairs of studs 7 and 8 at the short side of the hand¬ set which, when the casing sections are tightened are urged ourwards, one of the pairs 18 slipping into the lower section 2 through the
~
guide openings 25 at the same time as a further pair of lugs 19 is pushed diagonally downwards in order to engage a flange 24 on the in¬ side of the upper section. Thus, the upper section is pressed towards the lower one and is kept in a stable position so that bending strains are prevented as will be explained more in detail below.
Figs. 3 and 4 show -the clamping plate and its function in connection with the fastening of the upper and the lower sections. The lower section 2 has a stud 11 extanding inwards with a collar 12. Oppo¬ sitely, on the upper section a stud 13 extending inwards is provided having a hole 14 for the stud 11 and being provided with a thread 15 into which a screw 5 can be screwed in order to bring the two casing sections closer together by tightening. The clamping plate 16, shown in Fig. 5 in plan view by means of its fork-shaped end provided with • lugs 17 engages the stud 11. When the clamping plate is placed in the lower section 2 prior to assembly of the two casing sections the lugs 17 are approximately on a level with the upper edge of the stud 11 as shown in Fig. 3. The pairs of lugs 18 and 19 at the free ends of the forks’ arms of the clamping plate 16 provide pairs of claws- 18 and 19, respectively, of which the claw pair 18, upon mounting, engages into the hole 25 in the lower section as appears from Figs. 3 and 5. The clamping plate is also provided with two projections 20 directed down¬ wards whose purpose it is to k-eep the microphone 21 in a pressed down position. Furthermore the clamping plate is provided with a resilient arm 22 which elastically obstructs displacement of the plate in a down- wards direction. Between the fork-shaped end of the clamping plate provided by the lugs 17 and the major portion of the clamping plate an interconnecting arm 23 forming an obtuse angle with these two parts is provided.’ A cam surface 24 on the inner side of the intercon- necting arm is in close contact with the collar 12. When, after placing of the clamping plate 16 between the casing sections as shown in Fig. 3, the screw 5 is tightened, the stud 11 is inserted into the hole 14 and the lower surface of the stud 15 exerts a force on the lugs 17. The cam surface 24 slides over the edge of the collar 12. In this way the clamping plate 16 is pressed diagonally downwards during elastic de- formation of the spring 22 as appears from Fig. 4. In the position shown in Fig. 3, the clamping plate 16 does not engage the upper

casing section and, furthermore, the pairs of lugs 19 are not in close contact with the flanges 24 on the inner side of the upper section. Fig 3 shows the position before the tightening of the screw has started. In reality, however, the upper section is already pressed down suffi- ciently for the lugs 19 to be in a position higher than the flanges 24 when beginning the tightening of the screw. When, during the tightening the clamping plate 16 is displaced diagonally downwards, the pair of Lugs 19 grips the flange 24 and presses this downwards at the same time as the pair of lugs 18 is guided through the hole 25 in the out- wards direction. When the screw 5 is tightened the two sections are completely locked relative to each other and play or bending strains cannot arise. In Fig. 4 the wall part 26 (Fig. 3) has been removed to illustrate the position of the flange 24 after the Locking.

Claims (1)

WHAT WE CLAIM IS :
1 A fastening arrangement for holding together two sections of a telephone handset casing in which at least one of the telephone com¬ ponents is retained in position by means of a clamping element, charac¬ terized in that the clamping element (16) is provided with a cam sur- face (24) which is in close contact with a fixed support (12) in one said section (2) so that, when the two sections are pressed together as a result of pressure from the other section said element is urged diagonally downwards towards said at least one telephone component as a result of said cam surface sliding over-said fixed support, said clamping element (16) further being provided with projections (19) which as a result of the diagonal movement of the clamping element (16) are brought into engagement with a flange (24) on the other section (1) in order to firmly- old the two casing sections together.
2 A fastening arrangement according to claim 1, characterized in that the clamping element (16) includes a pair of forks arms, whose respective ends carry said projections (19).
3 A fastening arrangement according to claim 1, characterized in that the clamping element (16) includes a resilient arm (22) which is elastically deformed during displacement of the clamping element.
4 A fastening arrangement according to claim 1, characterized in that the clamping element (16) is provided with guide elements (17) which keep the clamping element during its displacement in an unchanged position in the transverse direction of the handset.
5 A’f’astening arrangement according to claim 1, characterized in that the clamping element (16) is provided with further projections (18) displaceable in holes in said one section to hold said clamping element steady during its displacement in said one section.
C?’?I

AU65702/80A
1980-11-06
1980-11-06
A fastening arrangement for holding together the two sectionsof a telephone handset casing

Ceased

AU538372B2
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

PCT/SE1980/000280

WO1982001632A1
(en)

1980-11-06
1980-11-06
A fastening arrangement for holding together the two sections of a telephone handset casing

Publications (2)

Publication Number
Publication Date

AU6570280A

AU6570280A
(en)

1982-05-21

AU538372B2
true

AU538372B2
(en)

1984-08-09

Family
ID=20339970
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU65702/80A
Ceased

AU538372B2
(en)

1980-11-06
1980-11-06
A fastening arrangement for holding together the two sectionsof a telephone handset casing

Country Status (6)

Country
Link

US
(1)

US4456794A
(en)

EP
(1)

EP0064052B1
(en)

JP
(1)

JPS56154882A
(en)

AU
(1)

AU538372B2
(en)

FI
(1)

FI822180A0
(en)

WO
(1)

WO1982001632A1
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

AU571304B2
(en)

1984-02-17
1988-04-14
Northern Telecom Limited
Telephone handset

Families Citing this family (9)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4633044A
(en)

1984-01-12
1986-12-30
Nitsuko, Ltd.
Telephone handset comprising an adapter resiliently fixed for a transmitter or a receiver to a housing therefor

AU577832B2
(en)

1984-06-29
1988-10-06
Intel Corporation
Telephone handset assembly

AU575917B2
(en)

1984-06-29
1988-08-11
Wang Laboratories, Inc.
Ergonomic telephone handset

US4675903A
(en)

1984-06-29
1987-06-23
Wang Laboratories, Inc.
Telephone handset assembly

JPS62141246U
(en)

1986-02-28
1987-09-05

US4712236A
(en)

1986-05-01
1987-12-08
AT&T Information Systems Inc. American Telephone & Telegraph Company
Telephone handset construction

US4776009A
(en)

1986-06-09
1988-10-04
Northern Telecom Limited
Telephone handset having housings assembled without mechanical fasteners

DE3727917A1
(en)

1987-08-21
1989-03-02
Grundig Emv
Asymmetrical handset for a cordless telephone

DE4445840A1
(en)

1994-12-22
1996-06-27
Telefunken Microelectron

Handset for telephone and radio communication systems

Family Cites Families (7)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

JPS5219960B2
(en)

1972-07-28
1977-05-31

DE2358602C2
(en)

1973-11-24
1983-11-17
Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt

Telephone handset

DE2433824B2
(en)

1974-07-11
1979-01-11
Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin

Sealable handset for telephone equipment composed of two housing halves

DE2460874C3
(en)

1974-12-21
1980-10-16
Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt

Arrangement for fastening the ear and speech capsules in a telephone handset

SE391853B
(en)

1976-05-04
1977-02-28
Ericsson Telefon Ab L M

HORTELEPHONE CABLE AND LID FITTING IN THE MAIN PART OF A ONE-PIECE TELEPHONE

JPS6051831B2
(en)

1977-02-23
1985-11-15
日本放送協会

Image display method

US4163875A
(en)

1978-02-09
1979-08-07
Northern Telecom Limited
Telephone handset with transmitter having a one piece gasket for sealing and holding of transmitter members

1980

1980-11-06
AU
AU65702/80A
patent/AU538372B2/en
not_active
Ceased

1980-11-06
US
US06/384,977
patent/US4456794A/en
not_active
Expired – Fee Related

1980-11-06
WO
PCT/SE1980/000280
patent/WO1982001632A1/en
active
IP Right Grant

1980-11-06
EP
EP80902187A
patent/EP0064052B1/en
not_active
Expired

1981

1981-03-18
JP
JP3802281A
patent/JPS56154882A/en
active
Pending

1982

1982-06-17
FI
FI822180A
patent/FI822180A0/en
not_active
Application Discontinuation

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

AU571304B2
(en)

1984-02-17
1988-04-14
Northern Telecom Limited
Telephone handset

Also Published As

Publication number
Publication date

US4456794A
(en)

1984-06-26

AU6570280A
(en)

1982-05-21

EP0064052A1
(en)

1982-11-10

WO1982001632A1
(en)

1982-05-13

FI822180A0
(en)

1982-06-17

JPS56154882A
(en)

1981-11-30

EP0064052B1
(en)

1984-10-03

Contact information