EP0107525A1 - Perfectionnements apportés aux systèmes de verrouillage de sécurité pour glissières télescopiques à billes - Google Patents

Perfectionnements apportés aux systèmes de verrouillage de sécurité pour glissières télescopiques à billes Download PDF

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Publication number
EP0107525A1
EP0107525A1 EP83401722A EP83401722A EP0107525A1 EP 0107525 A1 EP0107525 A1 EP 0107525A1 EP 83401722 A EP83401722 A EP 83401722A EP 83401722 A EP83401722 A EP 83401722A EP 0107525 A1 EP0107525 A1 EP 0107525A1
Authority
EP
European Patent Office
Prior art keywords
pawl
ramp
slide
locking
rod
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.)
Withdrawn
Application number
EP83401722A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alain Couppey
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.)
Conseil-Organisation-Gestion-Etudes -Participations Cogep Dite Ste
Original Assignee
Conseil-Organisation-Gestion-Etudes -Participations Cogep Dite Ste
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.)
Filing date
Publication date
Application filed by Conseil-Organisation-Gestion-Etudes -Participations Cogep Dite Ste filed Critical Conseil-Organisation-Gestion-Etudes -Participations Cogep Dite Ste
Publication of EP0107525A1 publication Critical patent/EP0107525A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/50—Safety devices or the like for drawers
    • A47B88/57—Safety devices or the like for drawers preventing complete withdrawal of the drawer
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/49—Sliding drawers; Slides or guides therefor with double extensible guides or parts
    • A47B88/493—Sliding drawers; Slides or guides therefor with double extensible guides or parts with rollers, ball bearings, wheels, or the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0029—Guide bearing means
    • A47B2210/0032—Balls
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0051—Guide position
    • A47B2210/0059—Guide located at the side of the drawer

Definitions

  • the present invention relates to an improved safety locking system for telescopic ball bearing slides, of the type used on machines or equipment capable of moving under conditions of precarious stability.
  • the object of the present invention is to provide a safety locking system for telescopic ball bearing slides carrying such drawers, which better meets the needs of practice than the safety systems known in the prior art, in that it absolutely eliminates the disadvantage and the risks mentioned above, in particular in that it ensures an infallible locking of the drawer in the limited open position, even in the event of too rapid operation of the drawer or destabilization of the machine on which the latter is mounted.
  • the present invention relates to a safety locking system for telescopic ball bearing slides carrying a "rack" or drawer, or the like, of the type comprising a locking pawl which cooperates with a recess formed between two locking ramps, to achieve the locking when the rack or the like has reached a determined limited open position,
  • safety locking system is characterized in that said locking pawl has a heel having an appropriate profile and cooperates with a housing intended to receive it and delimited by two locking ramps, one of which is integral with the fixed intermediate piece of the slide and has, at its end near said pawl, an appropriate profile, capable of cooperating with the latter and the other of which is an integral part of an associated rod to the movable slider of the slide, said second ramp being provided at the inner end of said rod and having a prof it suitable able to cooperate with the locking pawl.
  • the end of the first ramp which is adjacent to the locking pawl has the shape of a nose against which the heel of said pawl abuts when said pawl is in its locked position.
  • the above-mentioned rod has at its inner end a heel, the inner profile of which constitutes a cam surface on which the back of said pawl moves to assume its locking position , the upper part of said cam surface being such that it is sen4blezent parallel to the back of the pawl when the latter is in the locking position.
  • said rod comprises in the vicinity of its heel, a notch delimited on the heel side by said cam surface and, on the opposite side, by an inclined wall which is such that it is substantially parallel to the ratchet queue'du which abuts against said wall when the catch is in position to de - locking.
  • the locking system comprises a second locking pawl which cooperates with a second notch formed in the aforementioned rod upstream of the first notch relative to the heel of said rod , which notch constitutes a third ramp which acts on said second pawl to put the latter in the substantially horizontal unlocking position, in opposition to the action of a spring which normally biases said second pawl to maintain it in the locking position.
  • said third ramp is delimited on the upstream side, the closest to the outer end of the rod, by an inclined surface whose inclination is substantially the same angle relative to the horizontal. that the inclined wall which delimits the second ramp mentioned above on the upstream side and is such that it is substantially parallel to the tail of said second pawl when the latter is in the horizontal unlocking position.
  • the upstream end of the first ramp secured to the intermediate piece of the slide is bevelled at an angle substantially equal, relative to the vertical, to the inclination of the nose which forms the inner end of said first ramp, said bevel being substantially parallel to the head of said second pawl when the latter is in the locked position in the slide.
  • a return spring associated with the rod secured to the movable cursor causes, when it is compressed under the effect of a manual action exerted on a stud or analogous control integral with said spring, when said first and second pawls are in the locked position, substantially simultaneous unlocking of the two pawls by displacement of the inclined face of the second ramp provided in the vicinity of the end of the rod and of the inclined face of the third ramp, of a stroke corresponding to the compression stroke of the return spring, which inclined faces grow by moving the tails of said first and second pawls, forcing them to oscillate about their axis and to clear the beveled ends of the first ramp.
  • the compression action exerted on said return spring when the first locking pawl is in the locked position in the slide causes the unlocking of the slide by displacement ae the inclined face of the second ramp, which inclined face pushes, while moving, the tail of said first pawl, forcing it to oscillate around its axis and to disengage from the nose of the first ramp to allow voluntary closing of the slide.
  • the balls intended to facilitate the sliding of the movable cursor in the slide are mounted in movable housings in the grooves facing each other, formed respectively on the longitudinal edges of the movable slider and on the faces of the intermediate piece of the slide which are opposite said edges.
  • the present invention relates more particularly to safety locking systems for telescopic ball bearing slides, in accordance with the above provisions, as well as the means for the manufacture and assembly of such systems, the telescopic slides carrying "racks" or drawers, equipped with said locking systems and the machines on which they are mounted.
  • the slide equipped with a locking system comprises a fixed frame 1 made integral with an intermediate piece in the form of I, 2, by a pawl 3 On its face opposite to that by which it is secured to the frame 1, the intermediate piece 2 carries a movable cursor 4 capable of sliding on said face within the limits assigned to it by the locking system which is the subject of the present invention.
  • This locking system comprises a first ramp 5 fixed on the face 6 of the intermediate piece 2 on which the movable cursor 4 slides.
  • the ramp 5 is produced in the form of a flat bar fixed by any appropriate means, and in particular by riveting , on the face 6 of the intermediate piece 2, which bar extends over a length such that its inner end, which forms a nose 7 having an appropriate angle of inclination relative to the vertical, serves as a stop for a first pawl 8, while its outer end 9, which is bevelled at an angle of inclination substantially parallel to that of the nose 7, is intended to serve as a stop for a second locking pawl 10.
  • the movable cursor 4 carries on its internal face 11 facing the face 6 of the intermediate piece 2, a rod 12 which is secured to said cursor 4 by any appropriate means and in particular by bolting.
  • the notch 14-16-17 constitutes the second ramp for locking the slide.
  • the pawl 8 has at its head end a heel 19 whose general orientation is substantially perpendicular to that of the body of the pawl; the inner wall 20 of this heel, that is to say that which is on the side of the body of the pawl 8, delimits with the wall of said body to which it follows, a recess 35 whose shape and dimensions are such that when the pawl 8 is in the unlocked position in abutment on the nose 7 of the ramp 5, the wall 20 of the heel 19 of the pawl is substantially parallel to the inclined wall which forms the nose 7 of the ramp against which it s' applies in abutment, while the part 34 of the wall of the body of the pawl 8 adjoining the wall 20 of its heel 19, is substantially parallel to the axial direction of the ramp 5 against the lower edge of which it is applied in stop.
  • the pawl 8 In the locked position, the pawl 8 is pinched between on the one hand the nose 7 of the ramp 5, which fits into the corresponding recess 35 which the pawl comprises, and on the other hand the heel 22 of the rod 12 which is delimited respectively by the transverse edge 23 which forms the inner end of the rod 12 and by the cam surface 16a-16b which is part of the notch 13 formed in the rod 12, the part 16b of the surface cam being, when the pawl is in the locked position, substantially parallel to the part of the back 15 of the pawl 8 which is applied to it in this position.
  • the rod 12 has a second notch 23, not / lein its outer end, this second notch 23 to serve as a ramp to the pawl 10.
  • the notch 23, which has a bottom 24, is delimited on the side facing towards the outer end 25 of the rod 12, by an inclined edge 26 whose angle of inclination relative to the vertical, is substantially identical to that of the inclined face 17 of the notch 13.
  • the pawl 10 is associated with a spring 27 which constantly urges it to keep it in the inclined position, which is its locking position in which its head 28 abuts against the front or outer end 9 of the fixed ramp 5 fixed to the intermediate piece 2; its tail 29 then normally rests substantially in the obtuse angle formed between the bottom 24 and the edge 26 of the notch 23.
  • a spring 30 working under compression is made integral with the outer end 25 of the rod 12 by a stud (not shown) or the like, which can move, by manual actuation in a light 33 of substantially oblong shape formed in the slider mobile 4; its movement in said lumen compresses the spring 30 and therefore causes the corresponding displacement of the rod, and, consequently, the stressing of the pawls 8 and 10 by the ramps 17 of the notch 13 and 26 of the notch 23, made in the rod, for unlocking the slide, and the biasing of the pawl 8 by the cam surface 16a and 16b of the notch 13 for locking the slide.
  • the sliding cursor 4 slides in the slide takes place in the path provided for this purpose on the face 6 of the intermediate piece 2, in the vicinity of the two transverse bars 38 of the I-shaped profile which constitutes said intermediate piece.
  • this sliding is facilitated by the provision of a plurality of balls in the interval 36 which separates the longitudinal edges of the movable cursor 4 from the corresponding cross bar of the intermediate piece, which gap 36 constitutes the sliding path, however, these balls move freely in said gap 36 and sometimes prevent secure locking of the slide or cause the movable slider to jam and require the application of a significant pulling force to replace them in the correct position in the sliding paths 36 of the slide.
  • the balls are arranged in suitable housings constituted by ball rods 37, in which the balls are joined together, so that they are always in the correct position in the tracks.
  • bearing 36 and considerably facilitate the sliding of the slide, so that in the locked position of the slide, they contribute to the secure locking of the latter and in the case where the aim is to achieve full opening of the slide with final locking at the end of the opening stroke, the fully open position is obtained without jamming.
  • the transverse bars 38 of the intermediate piece 2 carry stops 39 at their ends, which stops cooperate with the ball rods 37 to limit the sliding opening of the slide when the latter is brought into the fully open position.
  • the pawl 8 In the closed position of the slide, the pawl 8 is in the "high" position, that is to say that the part of the back 15 of the pawl 8 adjoining the heel 19 of the latter is applied against the cam surface 16a of the notch 13 which receives the pawl 8, so that the latter is in position ready for locking; the pawl 10 is in a substantially horizontal position in its housing 23.
  • the servant assigned to the actuation of the drawer or "rack" mounted on the slide when it wishes to open said drawer, causes the sliding of the mobile assembly of the slide , which comprises the movable cursor 4 to which the rod 12 are fixed, the pawl 8 and the pawl 10, as well as the spring 27 with which it is associated, along the face 6 of the intermediate part 2 which remains fixed; this sliding is stopped when the heel 19 of the pawl 8 meets the ramp 5 fixed on the face 6 of the intermediate piece on which it abuts; the pawl 8 is then pinched between the heel 22 of the rod 12 and the nose 7 of the ramp 5, this securing preventing it from rotating around its axis 40.
  • the pawl 10 which is constantly stressed by the spring 27, is then released from the horizontal position in which it was in the closed slide, to turn around its axis 41 and take its "high” position in which its head 28 is in abutment against the beveled end 9 of the ramp 5, opposite to the nose 7.
  • the movable cursor 4 can no longer move either to the right, in the direction of continuing to open the drawer, by virtue of the pawl locking action 8, or to the left in the direction of closing the drawer, thanks to the locking action of the pawl 10.
  • the slide and, consequently, the drawer which it carries is securely locked without any possibility of the pawls 8 and 10 coming out of their respective housings 13 and 23 .
  • the locking system in the case where only locking in the direction of opening of the slide is desired, the locking system is simplified by removing the pawl 10 and the spring 27 associated therewith, as well as the ramp 23 which guides the movement of the pawl 10.
  • the servant wishes to unlock the slide to allow total opening, he exerts a manual push on the nipple or the like to maneuver, thus causing the compression of the spring 30; this pushes the ramp 26 of the notch 23 towards the tail 29 of the pawl 10, forcing the latter to rotate about its axis 41 and to free itself from the beveled end 9 of the ramp 5, to take up a position substantially horizontal in its housing 23; at the same time, the spring pushes the ramp 17 of the notch 13 against the tail 18 of the pawl 8, forcing the latter to rotate about its axis 4g so that its heel 19 leaves its position in abutment between the nose 7 of the ramp 5 and the heel 22 of the rod 12, to come to rest in its housing 13 with its back 15 substantially parallel to the bottom 14 of said housing.
  • the ramp 5 is thus separated from the movable cursor 4 and the elements 8-10-12 which it carries and the movable cursor 4 can then continue its opening stroke until the stops carried by the end of the intermediate piece to that where the operating pin reaches the ball rods 37; the cam surface 16a of the notch 13 in which the pawl 8 is housed then pushes the back of the latter which thereby rises to come back into abutment by its heel 19 against the nose 9 of the ramp 5.
  • the slide is again securely locked, in its new fully open position, without being able to move either in the direction of total release of the drawer, or in the direction of closing.
  • the servant wishes to unlock the slide to close the latter, he exerts a manual push on the operating pin, thus compressing the spring 30 which displaces the ramp 17 of the notch 13, which pushes the tail 18 of the pawl 8 which rotates around its axis 40 to release the ramp 5 and allow the sliding cursor 4 to slide in the direction of total closure.
  • the shapes of the pawls 8 and 10 have been given by way of nonlimiting examples and that the inclinations of the ramps 17 and 26 of the cam surface 16a are calculated as a function of the shape of the pawls 8 and 10 ; their angle of inclination can vary from the vertical between 10 and 80 ° approximately.
  • the angle of the cam surface 16b of the heel 22 of the rod 12 is calculated so that this cam surface is parallel to the corresponding part of the back 15 of the pawl 8 when the latter is in the locked position. .
  • the telescopic ball bearing slides equipped with the infallible safety lock in accordance with the present invention can be mounted on any machine or material capable of moving under conditions of precarious stability, such as ships, in particular warships, vehicles, aircraft, trains, automatic devices requiring safety interlocks; they can carry all kinds of mobile assemblies such as the racks or drawers already mentioned, or surveillance cameras placed high up and whose objectives are facing down, etc.

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EP83401722A 1982-09-02 1983-08-30 Perfectionnements apportés aux systèmes de verrouillage de sécurité pour glissières télescopiques à billes Withdrawn EP0107525A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8214999A FR2532532A1 (fr) 1982-09-02 1982-09-02 Perfectionnements apportes aux systemes de verrouillage de securite pour glissieres telescopiques a billes
FR8214999 1982-09-02

Publications (1)

Publication Number Publication Date
EP0107525A1 true EP0107525A1 (fr) 1984-05-02

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ID=9277189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401722A Withdrawn EP0107525A1 (fr) 1982-09-02 1983-08-30 Perfectionnements apportés aux systèmes de verrouillage de sécurité pour glissières télescopiques à billes

Country Status (2)

Country Link
EP (1) EP0107525A1 (enrdf_load_stackoverflow)
FR (1) FR2532532A1 (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192990A3 (en) * 1985-02-26 1988-04-13 Rittal-Werk Rudolf Loh Gmbh & Co. Kg Assembly for the lateral guiding of a support of components movable into a frame, a switch cabinet etc.
US6585335B2 (en) * 2001-09-28 2003-07-01 King Slide Works Co., Ltd. Rear-section bolt lock structure of a slide
GB2401534A (en) * 2003-03-05 2004-11-17 King Slide Works Co Ltd Two-way retainer for a drawer slide track assembly
US6926377B2 (en) * 2002-08-08 2005-08-09 Compx International Inc. Drawer slide latch and release mechanism
US7090319B2 (en) * 2001-08-17 2006-08-15 Accuride International, Inc. Guide tab and slide incorporating the same
GB2434081A (en) * 2006-01-16 2007-07-18 King Slide Works Co Ltd Latching mechanism for a telescopic drawer slide assembly
US7465000B2 (en) * 2006-11-09 2008-12-16 Nan Juen International Co., Ltd. Automatic drawer slide homing apparatus
US7604309B2 (en) * 2006-01-19 2009-10-20 King Slide Works Co., Ltd. Auto release retaining mechanism of a slide
US7794029B2 (en) * 2006-12-01 2010-09-14 Hong-Fu Jin Precision Industry (ShenZhen) Co., Ltd. Ball bearing slide assembly
DE102013103009B4 (de) * 2013-03-25 2017-05-04 Nan Juen International Co., Ltd. Auszugsschiene mit einem drückbaren Löseschutz
CN106793874A (zh) * 2014-10-07 2017-05-31 保罗海蒂诗有限及两合公司 拉出引导件

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2608905B1 (fr) * 1986-12-30 1989-12-08 Signaux Entr Electriques Glissiere a billes telescopique en particulier pour tiroirs
US5344226A (en) * 1993-03-12 1994-09-06 Lee Wen Ting Safety device for drawers
US5484197A (en) * 1993-03-29 1996-01-16 General Devices Co., Inc. Releasable latch for a telescoping slide assembly
US5417490A (en) * 1993-03-29 1995-05-23 General Devices Co., Inc. Telescoping slide assembly
US5385405A (en) * 1993-06-07 1995-01-31 General Devices Co., Inc. Floating roller retainer assembly for slides

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US937531A (en) * 1909-02-23 1909-10-19 Allen W Jones Driving mechanism for roundabouts.
GB856227A (en) * 1958-01-02 1960-12-14 Hallam Sleigh & Cheston Ltd Improvements relating to slide assemblies for use in connection with cabinets or receptacles containing pull-out units

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937531A (en) * 1975-03-03 1976-02-10 Hagen Magnus F Telescoping drawer slide section for 2-member telescopic ball bearing slides affording full extension

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US937531A (en) * 1909-02-23 1909-10-19 Allen W Jones Driving mechanism for roundabouts.
GB856227A (en) * 1958-01-02 1960-12-14 Hallam Sleigh & Cheston Ltd Improvements relating to slide assemblies for use in connection with cabinets or receptacles containing pull-out units

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192990A3 (en) * 1985-02-26 1988-04-13 Rittal-Werk Rudolf Loh Gmbh & Co. Kg Assembly for the lateral guiding of a support of components movable into a frame, a switch cabinet etc.
US7090319B2 (en) * 2001-08-17 2006-08-15 Accuride International, Inc. Guide tab and slide incorporating the same
US6585335B2 (en) * 2001-09-28 2003-07-01 King Slide Works Co., Ltd. Rear-section bolt lock structure of a slide
US6926377B2 (en) * 2002-08-08 2005-08-09 Compx International Inc. Drawer slide latch and release mechanism
GB2401534A (en) * 2003-03-05 2004-11-17 King Slide Works Co Ltd Two-way retainer for a drawer slide track assembly
GB2401534B (en) * 2003-03-05 2006-01-18 King Slide Works Co Ltd Two-way retainer for a slide track assembly of drawers
GB2434081A (en) * 2006-01-16 2007-07-18 King Slide Works Co Ltd Latching mechanism for a telescopic drawer slide assembly
GB2434081B (en) * 2006-01-16 2008-01-23 King Slide Works Co Ltd Latching mechanism for a telescopic drawer slide assembly
US7604309B2 (en) * 2006-01-19 2009-10-20 King Slide Works Co., Ltd. Auto release retaining mechanism of a slide
US7465000B2 (en) * 2006-11-09 2008-12-16 Nan Juen International Co., Ltd. Automatic drawer slide homing apparatus
US7794029B2 (en) * 2006-12-01 2010-09-14 Hong-Fu Jin Precision Industry (ShenZhen) Co., Ltd. Ball bearing slide assembly
DE102013103009B4 (de) * 2013-03-25 2017-05-04 Nan Juen International Co., Ltd. Auszugsschiene mit einem drückbaren Löseschutz
CN106793874A (zh) * 2014-10-07 2017-05-31 保罗海蒂诗有限及两合公司 拉出引导件

Also Published As

Publication number Publication date
FR2532532A1 (fr) 1984-03-09
FR2532532B1 (enrdf_load_stackoverflow) 1984-12-28

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