GB2104583A - A buckle for safety belt systems - Google Patents
A buckle for safety belt systems Download PDFInfo
- Publication number
- GB2104583A GB2104583A GB08219048A GB8219048A GB2104583A GB 2104583 A GB2104583 A GB 2104583A GB 08219048 A GB08219048 A GB 08219048A GB 8219048 A GB8219048 A GB 8219048A GB 2104583 A GB2104583 A GB 2104583A
- Authority
- GB
- United Kingdom
- Prior art keywords
- release key
- locking element
- housing
- buckle
- tongue
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
- A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
- A44B11/2503—Safety buckles
- A44B11/2507—Safety buckles actuated by a push-button
- A44B11/2511—Safety buckles actuated by a push-button acting perpendicularly to the main plane of the buckle, e.g. placed on the front face of the buckle
Landscapes
- Buckles (AREA)
- Emergency Lowering Means (AREA)
Abstract
A buckle for safety belts comprises a locking element 1 which is to be connected to one belt end and surrounded by a housing 2 of plastics material, and a lock tongue 4 which is to be connected to the other belt end. The lock tongue 4 is insertable by its end into the locking element 1, in order to be locked therewithin by means of a locking member 6 kept under spring preloading, this locking action being neutralisable by depressing a release key 3 acting on the locking member 6. For structural simplification of the lock, the release key 3 is produced integrally in the form of a tongue with the plastics material housing surrounding the locking element 1 and is resiliently deflectable under application of pressure in the direction towards the locking member 6. <IMAGE>
Description
SPECIFICATION
A buckle for safety belt systems
The invention relates to buckles for safety belt systems of the kind comprising a locking element which is to be connected to one end of the belt and surrounded by a housing of plastics material, and a lock tongue which is to be connected to another belt and, which lock tongue is insertable by its end into the locking element in order to be locked therewithin by a locking member kept under spring preloading, this locking action being neutralisable by depressing a release key acting on the locking member. Hereinafter such a buckle will be referred to as "of the kind described".
The known plastics material housings for such buckles comprise a recess of larger size for a release key for actuation of the lock locking member. The release key is produced separately and inserted into the recess, in such manner that it cannot drop out. This form of constructions of the housing having a separate release key, has different disadvantages.
On the one hand, production is comparatively costly since separate injection moulding moulds are needed for the housing as well as for the release key. Furthermore, a return spring must be provided for the release key to restore the key into its initial position. An appropriate job time must also be taken into consideration for installing the key and its return spring, which must be associated as being comparatively sizeable, since this is a mass-production article. Since, finally, skewing or jamming of the release key must be prevented for reasons of operational safety, the freedom of movement between the key and the recess therefor must be of sufficiently large dimensions within the housing, which however implies the risk of soiling which for its part may impair the troublefree operation.
It is an object of the invention to provide a belt buckle of the kind described which can be manufactured more simply and inexpensively than hitherto whilst still being reliable in operation.
Accordingly the invention consists in a belt buckle of the kind described, wherein the release key is in the form of a tongue or projection made as a unit with the housing surrounding the locking element, and is resiliently deflectable under application of pressure in the direction towards the locking member.
A substantial reduction in production cost is possible with this construction, since only a single injection mould is required, the configuration of which encompasses the forming of the housing and the simultaneous integral forming of the release key which is thus produced as an integral part. Any plastics material having adequate remanent elasticity can be used for the housing and release key whereby a conventional return spring may be omitted, and its installation cost saved. A simplified assembling operation is also provided by the elimination of the separate release key. The risk of soiling the lock components is lessened, since the release key now formed in unit
is installed in a close fit in its housing recess.
In order that the invention may be more clearly
understood, reference will now be made to the
accompanying drawings which show one
embodiment thereof by way of example only and
in which: Figure 1 shows a longitudinal cross-section
through the housing, the belt buckle being in the
closed position, and
Figure 2 shows a plan view of the belt buckle
housing, the lock tongue not being illustrated
however.
Referring now to the drawings, according to Figure 1, the belt buckle illustrated comprises a
locking element 1 which is secured within a
housing 2 of plastics material comprising a release
key 3, a lock tongue 4 insertable into the locking
element from the one narrow side, an ejector plate
5 for the lock tongue which is mounted in the
locking element in longitudinally displaceable
manner, a pivot bolt 6 oF angularly serpentine form
acting as a locking member, one end of which is
pivotable close to the belt side narrow side of the
locking element around an axis situated in its
plane, and the other end of which member
engages in the lock tongue 4, and a leaf spring 7
acting as a return spring which for its part bears
on the locking element 1 and on the other hand
bears in slidable contact against the underside of
the pivot bolt 6, so that the latter is normally held
in the closed position. The lock tongue 4 is formed
by a metal plate and is provided at the belt side
with a plastics material covering 8 adapted to the
housing 2, to which is joined the conventional belt
(not shown). In the closed position according to
Figure 1, the front edge 4a of the tongue 4 bears
against a confronting edge area 5a of the ejector
plate 5, the plate 5 on the other hand bearing
against a spring 10 and the bolt 6, and the spring
10 on the other hand also bearing on the bolt 6.
The bolt 6 extends in the longitudinal direction
of the lock and is made by bending a suitable
metal strip and, for its pivotal mounting, has a
bearing lug 11 at each side, the two bearing lugs
being situated between mutually spaced lock
plates 12, 13 of the locking element 1. The
terminal section of the bolt 6, situated at the
insertion side, is produced in hook form and
engages in an excision 4b of the lock tongue 4.
The release key 3 is in the form of a tongue and
is injection moulded in unit with the plastics
material housing 2 the upper side of the housing
being provided with a narrow U-shaped slot 1 4.
The material of the housing 1 has the required
remanent elasticity, so that the tongue-like release
key is reset automatically by inherent spring
action. When downward pressure is exerted on
the release key in the position shown in Figure 1, it
is deflected downwards towards the locking
member 6 and disengages the same from the lock
tongue 4 under continued pressure. The lock
tongue is then ejected from the locking element 1
by the ejector spring 1 0. Upon being freed, the
integral release key 3 springs back into its initial
position.
To avoid the risk of breakage of the tongue-like release key 3, the terminal areas 1 5 at the joined end of the key may be given a rounded form. The plastics material utilised for the housing 2 inclusive of the tongue 3 is advantageously a copolymerisate which may be a low-pressure or a high-pressure polyethylene.
Claims (3)
1. A belt buckle for safety belt systems of the kind described wherein the release key is in the form of a tongue or projection made as a unit with the housing surrounding the locking element, and is resiliently deflectable under application of pressure in the direction towards the locking member.
2. A belt buckle substantially as hereinbefore described with reference to the accompanying drawings.
3. A safety belt system whenever including a belt buckle as claimed in either of the preceding claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19818119770 DE8119770U1 (en) | 1981-07-07 | 1981-07-07 | BELT LOCK FOR SAFETY BELT SYSTEMS |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2104583A true GB2104583A (en) | 1983-03-09 |
GB2104583B GB2104583B (en) | 1984-11-07 |
Family
ID=6729126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08219048A Expired GB2104583B (en) | 1981-07-07 | 1982-07-01 | A buckle for safety belt systems |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE8119770U1 (en) |
FR (1) | FR2509147A1 (en) |
GB (1) | GB2104583B (en) |
SE (1) | SE8204158L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2584901B1 (en) * | 1985-07-17 | 1987-11-27 | Peugeot Aciers Et Outillage | IMPROVED BUCKLE, ESPECIALLY FOR A SEAT BELT |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3566455A (en) * | 1969-09-22 | 1971-03-02 | American Safety Equip | Restraint belt buckle cover |
US3626556A (en) * | 1970-11-10 | 1971-12-14 | Irvin Industries Inc | Buckle mechanism |
US4035877A (en) * | 1975-09-15 | 1977-07-19 | Brownson Ivan F | Buckle |
FR2451175A1 (en) * | 1979-03-13 | 1980-10-10 | Sappey Dauphinoise | Clasp for fastening two straps - consists of male piece and flexible plastics female piece with tongue and cavity |
GB2079833A (en) * | 1980-07-14 | 1982-01-27 | Little Rock Ltd | Buckles for baby carriers |
-
1981
- 1981-07-07 DE DE19818119770 patent/DE8119770U1/en not_active Expired
-
1982
- 1982-06-23 FR FR8210989A patent/FR2509147A1/en active Pending
- 1982-07-01 GB GB08219048A patent/GB2104583B/en not_active Expired
- 1982-07-05 SE SE8204158A patent/SE8204158L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
GB2104583B (en) | 1984-11-07 |
FR2509147A1 (en) | 1983-01-14 |
DE8119770U1 (en) | 1981-11-05 |
SE8204158L (en) | 1983-01-08 |
SE8204158D0 (en) | 1982-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920701 |