FR2582918A1 - SAFETY KEY HOLDER OF THE RING TYPE. - Google Patents

Abstract

THE INVENTION CONCERNS A RING-TYPE SAFETY KEYRING, INCLUDING A RIGID PROFILE22, DEFINING AT LEAST ONE OPEN RING AND AT LEAST ONE MOVABLE BODY20, ASSOCIATED WITH ONE OF THE ENDS OF THE SAID OPEN RING AND SUITABLE TO BE MOVED IN DIRECTION FROM THE OTHER END TO CLOSE THE RING. ACCORDING TO THE INVENTION, IN THE CLOSED POSITION, THE MOBILE BODY IS IN THE IMMEDIATE NEIGHBORHOOD OF THE FREE END 23 OF THE SAID OPEN RING WHICH IS NOT SOLIDARITY, WITHOUT BEING IN CONTACT WITH THE SAID EXTREMITY.

Description

--1--

  Key ring type safety key ring.

  The present invention relates to a key ring of

ring type security.

  Numerous ring type key holders, provided with an opening system, have already been described in the prior art. In their most usual form, they generally comprise at least one open rigid structure, comprising two opposite ends, and a movable member secured to one of said ends.

  and able to be manually moved to

  attached to the other end or to abut against it, so as to close the said

rigid profile forming a ring.

  Ring-type rings of this type have various disadvantages, the most frequent of which will be described hereinafter with reference to FIGS. 1 to 4 of the accompanying drawings, the other figures of which relate to

  various forms of implementation of the invention,

  which will be referred to later in this

description.

  In these drawings: Figures 1 to 4 schematically illustrate four

  types of ring key rings of the known art.

  Figures 5 to 7 are views of three embodiments of the porteclefs according to the invention; FIG. 8 is a fragmentary sectional view on a larger scale of an embodiment of a movable member of the key ring according to the invention, in which a limit-stop braking system is provided for

this element.

  Figures 9 and 10 are similar views,

  partly in section, representing the constitution of two

  variants of a movable member of the key ring according to the

  vention. The key-holder represented in FIG.

  perfectly representative of the prior art.

  It comprises, in fact, a rigid frame 1 in form -2 - C, whose two ends 2 are threaded, and a movable element 3, constituted by a wheel, whose

  both ends are provided with a corresponding thread

  laying at the ends of 2 contiguous. The door-

  key is shown on the drawing in the open position and it is clear that, to close it, simply screw the knob 3 on the upper end 2 of the frame

  1, partially simultaneously unscrewing this knob

  te of the lower end of this same frame.

  The key-holder of FIG. 2 is analogous, in principle, to that of FIG.

  described are designated by the same reference numerals.

  this, assigned index '. The wheel 31, which is screwed

  on one end 2 'of the structure 1 can not, however,

  not be screwed to the other end 4 of this structure.

  ture, but it includes a nipple 5 that can come into

  in a dwelling 6 in that other end.

mity 4.

  Alternatively, in the key ring of FIG.

  the wheel 3 "no longer includes a nipple, but an obvious

  7, in which, in the closed position, is

  housed the end 2 "of the rigid structure 1".

  The key-rings represented on these figurest1 to 3

  have the disadvantage of requiring, in order to achieve

  be a perfect locking of the wheel in the position of

  meture, a very firm screwing of this wheel. The latter thus exerts significant constraints on its

  or its threads as well as on the one or those of the structure

  the key holder, as well as on the free end of this structure. This results, on the one hand, in a rapid wear of the various organs and, on the other hand, a risk of deformation, in particular in the case where key rings are made of precious metals such as

than gold or silver.

  Ring key rings have also been proposed, implementing different principles. Such a key ring with two rings is shown in Figure 4. It comprises a T-shaped structure, 10, associated with two branches L, -3- 11t and 11 ", articulated at one of their ends, by pins 121 and 12 "11, on the ends of the branches of the T-structure 10. The branches 11 and 11 'comprise at their other end a housing 131 and 13", in which can engage, in the closed position of the key ring , a pin 14, slidably mounted in a housing 15 of the central part of the T-structure 10, in which

  it is urged outwards by a spring 16.

  This key-ring of the prior art is therefore

  more complex than the previous ones and consequently requires

  more difficult machining and is moreover

  fragile. In addition, in use, deformations may occur, with a risk of locking the closure system, since it requires, in order to function properly, a perfect centering of the

  pin 14 and housings 13t and 13 ".

  The present invention aims to remedy these inconveniences.

  that is to say, to avoid excessive constraints

  sive, both on the threads as on the wheel and on the structure of the key-ring. To do this, it proposes to eliminate any direct contact between the movable member and the free end of the rigid structure, and simply to bring the movable member in the immediate vicinity of this

  end, in the closed position of the key ring.

  The subject of the invention is therefore a carrier

  security keys of the ring type, comprising a rigid profile, defining at least one open ring, and at least one movable member secured to one end of said open ring and able to be moved in the direction

  at the other end to close said ring, this holder

  keys being characterized in that in a closed position

  said movable member is in the immediate vicinity of the free end of said open ring of which it is not

  integral, without being in contact with said end.

  In this definition of the invention, the expression "in the immediate vicinity" means that the space separating the movable member from said free end is a space small enough for a captive key to

  the ring thus formed can not be released accidentally

  of it through said space.

  Because of this lack of contact between the

  free mite of the rigid profile and the movable member, one will thus remove the excessive stresses often imposed on this movable member and the rigid profile, as well as the requirement of a rigorous positioning

different organs.

  As in the key-rings of the known technique, the movable member may consist of a knob screwed onto the end of the open profile opposite said free end. Advantageously, provision will be made in this case a limit braking member of said

  wheel, constituted for example by a sliding stop

  within the latter, with the interposition of an O-ring between the side walls of said abutment

and said wheel.

  The movable member may also consist of a sliding member on the end of the open profile opposite said free end and be biased in the closed position by an elastic return member such as a spring. Said movable member may, for example, be hollow, with said free end engaged in this member and provided with a retaining stop for one end of the movable member said spring being housed in said hollow member and bearing against said stop for

  urging the opposite end of said hollow organ.

  Said spring can also take itself support against said retaining stop by means of a movable stop, which a control member such as a lever will allow to move against said spring

  to open the keychain more easily.

  Of course, as in the prior art, the same key ring may include several rings

  open forms a monobloc structure.

  Various embodiments of the invention will be described hereinafter with reference to FIGS.

mentioned above.

  In the key-rings of FIGS. 5 and 6, a wheel 20 is screwed onto a threaded end 21 of a rigid profile 22 having the form of an open ring, in a position such that, by unscrewing the wheel, this wheel can being brought into lateral position with respect to the free end 23 of the profile 22 (FIG. 5) or below this end 23 (FIG. 6), in the immediate vicinity thereof, without being in contact with it,

to close the ring.

  FIG. 7 shows an alternative embodiment of the key-holder of FIG. 5. A rigid frame 25

  comprises a central branch 26 and two lateral branches

  27, which define two open rings. A wheel 28 screwed on the central branch 26 can be brought between the ends 29 of the side branches 27, in the immediate vicinity thereof, but without coming into contact with them, to close the two rings,

  so as to form a double key ring.

  In order to avoid having to exert

  At the end of the stroke, on the threads of the wheel and the associated part of the rigid profile, advantageously use will be made of an end-of-stroke braking system such as that shown in FIG. 8. In this embodiment of the In the invention, the movable member 40 is hollow and has an open end 41 internally threaded into which the threaded end of the associated portion 42 of the rigid profile is screwed. A braking element 43 is slidably mounted inside the movable member 40. It is in contact,

  by friction, by means of an O-ring 44,

  tomère, with the inner side of the walls of the organ

  40. It helps to prevent unwanted unscrewing

  of the latter and thus increases the safety of the

  keys, without requiring additional solicitations -6-

threading.

  Figures 9 and 10 illustrate another type of key holder according to the invention, wherein the movable member is no longer screwed on one end of the open profile but is slidably mounted on this end. In both variants, the movable member 30 has the general shape of a hollow cylinder, one end of which has a slot 31, in which is engaged an end 32 of an open rigid profile 33. The end 32 comprises a head 34, housed inside the movable member 30 and serving as a stop for retaining and centering this member relative to the profile 33. A spring 35, housed in the movable member 30, is supported by one end, against the head 34, either directly (Figure 9) or by means of a movable stop 36 (Figure 10), while its other end urges the corresponding end of the movable member to bring it to the immediate vicinity from the free end 37

profile 33.

  To open the key holder, it suffices to compress the spring 35, either manually, in the case of Figure 9, or with a lever 38, in the case of Figure 10, the lever requesting the movable stop 36 and protruding laterally out of

  the movable element 30 through a cutout 39.

  In its various embodiments, the invention thus provides a simple and easy solution to implement the problems of centering and constraints posed

  by the key-rings of the known technique.

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Claims (6)

  1.- Ring type safety key ring,   taking a rigid profile (22, 25, 33), defining at least one open ring, and at least one movable member (20, 28, 30, 40) integral with one of the ends of said open ring and able to be moved in the direction of   the other end to close said ring   keys being characterized in that in the closed position,   said movable member is in the immediate vicinity of the ltex-   free end (23, 29, 37) of said open ring of which it is not integral, without being in contact with said end.   2. Keychain according to claim 1, characterized   in that said movable member comprises, in a manner known per se, a wheel (20, 28, 40) screwed onto the associated part (21, 26) of said rigid profile. said wheel having a braking system of its displacements at the end race.   3. Keychain according to claim 3, characterized   in that said wheel is made of an element   hollow (40), screwed onto the associated part (42) of said   rigid wire and inside which is slidably mounted a member (43) frictionally secured to the inner wall of said hollow element (40) via an elastomeric seal (44), said member (43) being disposed of such that, when opening the key ring, it comes into abutment against the associated part (42) of the rigid profile at the end of the stroke of said wheel.   4. Keychain according to claim 1, characterized   in that said movable member (30) is mounted   smoothing on the associated part (32) of said rigid profile and is biased in the closed position by an organ recall.   5. Keychain according to claim 4, characterized   in that said movable member (30) is hollow and contains an elastic return element such as a spring (35), the associated part (32) of said rigid profile being engaged inside said movable member (30) and having at its end a retaining stop (34) and centering for said movable member   against which the said restoring element (35) bears.   6. Keychain according to claim 5, characterized   characterized in that said biasing member (35) bears against said stop (34) via a   movable stop (36) adapted to be displaced from outside the   said movable member (30) by a control member (38).