Joints and connections – Manually releaseable latch type – Having operating mechanism
Reexamination Certificate
1999-05-11
2001-03-20
Browne, Lynne H. (Department: 3629)
Joints and connections
Manually releaseable latch type
Having operating mechanism
C074S512000, C403S321000, C403S196000
Reexamination Certificate
active
06203236
ABSTRACT:
The present invention relates to a device for the quick assembly and disassembly of two parts.
More specifically, the invention relates to a device of the type comprising a clasp secured to a first of the two parts and a fastener secured to a second of the two parts and arranged transversely with respect to a first direction, the clasp comprising a guide yoke which has a guide slot oriented in the first direction, a retaining yoke having a retaining slot, and blocking means, the retaining yoke being mounted so that it can be pivoted at will on the guide yoke, the fastener being able, when the clasp is in an open configuration, to enter the guide and retaining slots simultaneously, in a movement in the first direction and towards a closed end of the guide slot, insertion of the fastener into the clasp causing the retaining yoke to pivot between an unlocked position which corresponds to the clasp-open configuration and for which the retaining slot is oriented at an angle to the first direction, and a locked position which corresponds to a clasp-closed configuration and for which the retaining slot is oriented transversely with respect to the first direction, the blocking means spontaneously allowing the clasp to pass from its open configuration to its closed configuration and allowing passage in the opposite direction only selectively.
BACKGROUND OF THE INVENTION
Devices of this type are well known in the prior art, as illustrated, for example, by Patent GB-1, 044,762.
In general, these devices are used for highly specific applications, and in products whose use is not particularly widespread, which means that they can, without any economic disadvantage, be highly complex.
SUMMARY OF THE INVENTION
The invention, on the other hand, envisages adapting a device of this type to applications that demand mass production, and therefore has the objective of optimizing the structure of such a device to make it easy and inexpensive to manufacture, the invention finding a favourite application in the assembly of braking force transmission systems for motor vehicles.
To this end, the device of the invention, which in other respects is in accordance with the definition given in the above preamble, is essentially characterized in that the blocking means comprise at least a first lug borne by a first of the two yokes and projecting towards a second of these yokes, and at least one corresponding housing provided in the second yoke for housing the first lug, a lack of engagement of the first lug in the corresponding housing causing, in the case of one of the two yokes at least, an elastic deformation which is taken back up by the engagement of this first lug in the corresponding housing, and in that the first lug is engaged in the corresponding housing for the clasp-closed configuration and only for this configuration.
As a preference, the retaining yoke is mounted to pivot about a pivot supported by the guide yoke, and this yoke comprises first and second cheeks which are parallel and joined together, the first lug and the corresponding housing being provided on cheeks which face each other belonging to the two yokes.
In this case, the retaining yoke is advantageously mounted inside the guide yoke and the cheeks of the retaining yoke have legs which extend beyond the guide yoke in the clasp-closed configuration, it thus being possible for the cheeks of the retaining yoke to be moved closer together by squeezing, in order to allow each lug to disengage from the corresponding housing.
Furthermore, the retaining yoke may have an elastic tongue which is arranged between the first and second cheeks of the retaining yoke, at right angles to these cheeks and which, in the clasp-closed configuration, elastically urges the fastener towards the closed end of the guide slot.
The effectiveness of the device of the invention is further enhanced by giving the first lug a sloping profile ending in an abrupt edge and by ensuring that the abrupt edge is last to enter the housing when the first lug is engaged in the corresponding housing through the rotation of the retaining yoke from its unlocked position into its locked position.
In the favourite application of the invention, the first part is a rod for operating a braking system, and the second part is a brake pedal, the operating rod extending in the first direction, and the fastener consisting of a spindle fixed to the brake pedal.
Other features and advantages of the invention will emerge clearly from the description thereof given hereafter by way of non-limiting indication with reference to the appended drawings,.
REFERENCES:
patent: 1352982 (1920-09-01), Luthi
patent: 3646831 (1972-03-01), Janosi
patent: 3988945 (1976-11-01), Fasano
patent: 5054333 (1991-10-01), Scott et al.
patent: 1044762 (1966-10-01), None
patent: 1403884 (1975-08-01), None
Antherieu Frederic
Gautier Jean-Pierre
Leboisne Cedric
Browne Lynne H.
Comstock Warren
Malcolm Tomlyne A
McCormick Jr. Leo H
Robert & Bosch GmbH
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