EP2273902A1 - Encastrement par gravité et réglage de la force de déplacement - Google Patents

Encastrement par gravité et réglage de la force de déplacement

Info

Publication number
EP2273902A1
EP2273902A1 EP09745759A EP09745759A EP2273902A1 EP 2273902 A1 EP2273902 A1 EP 2273902A1 EP 09745759 A EP09745759 A EP 09745759A EP 09745759 A EP09745759 A EP 09745759A EP 2273902 A1 EP2273902 A1 EP 2273902A1
Authority
EP
European Patent Office
Prior art keywords
force spring
housing
rail
friction
rail elements
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
Application number
EP09745759A
Other languages
German (de)
English (en)
Other versions
EP2273902B1 (fr
Inventor
Robert Braun
Thomas Quirein
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.)
Accuride International GmbH
Original Assignee
Accuride International GmbH
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 Accuride International GmbH filed Critical Accuride International GmbH
Publication of EP2273902A1 publication Critical patent/EP2273902A1/fr
Application granted granted Critical
Publication of EP2273902B1 publication Critical patent/EP2273902B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • A47B88/473—Braking devices, e.g. linear or rotational dampers or friction brakes; Buffers; End stops
    • 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
    • A47B88/483—Sliding drawers; Slides or guides therefor with single extensible guides or parts
    • A47B88/487—Sliding drawers; Slides or guides therefor with single extensible guides or parts with rollers, ball bearings, wheels, or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32467—Telescoping members
    • Y10T403/32475—Telescoping members having detent
    • Y10T403/32483—Spring biased

Definitions

  • the invention relates to a device for releasably locking two mutually movably mounted rail elements of a telescopic rail or a linear guide and for adjusting the applied for the process motive force.
  • a telescopic rail in the sense of the present application comprises two or more rail elements displaceable relative to one another, wherein the telescopic rail in the extended state has a length which extends substantially beyond that of the longest rail element.
  • the telescopic rail can extend to a length which is less than twice the length of the longest rail element.
  • the telescopic rail can be extended to a length which is greater than twice the length of the longest rail element.
  • To realize a full extension at least three mutually movable rail elements are required.
  • a short rail element also referred to as a carriage, is guided along the length of a much longer rail element.
  • the bearing of the rail elements against each other can be done via plain bearings, roller or roller bearings or ball bearings.
  • ball bearings are generally used because they have high load capacity and good movement characteristics.
  • telescopic rails and linear guides require that the linear movement can be locked in different travel positions of the rail elements.
  • latching in connection with this application means that the linear movement is opposed to a stronger position at a latching position than outside a latching position. Locking in this context does not mean that a locking takes place in a certain position, which would have to be released by a release mechanism again.
  • the latching in a certain travel position should be in the sense of the present application by a slightly increased effort in the insertion or extraction direction of the telescopic rail or linear guide be solvable again.
  • a telescope rail or linear guide neither too easy nor too difficult to move. Too easy mobility can result in an unintentional procedure and give the impression that the device is overall less stable.
  • By increasing the motive force to be applied for the method it is often possible to improve the function and feel of the telescopic rail or linear guide.
  • the object of the present invention was therefore to provide a device for the releasable locking of two mutually movably mounted rail elements, a telescopic rail or a linear guide and for adjusting the force to be applied for the method, which is improved over the prior art and in particular both radio - Provides functions in a component, requires little space, can be used in different rail systems, is simple and inexpensive to manufacture and assemble and the determination of the forces for locking and movement independently allowed.
  • a device of the type mentioned above with a housing which is attached to a first of the mutually movable rail elements, at least one latching element and at least one detent force spring, which is supported on the housing and the latching element against the second of the mutually movably mounted Rail elements biased at least one friction element and at least one friction force spring, which is supported on the housing and the friction element presses against the second of the mutually movable rail elements mounted biased.
  • the housing of the device according to the invention is expediently made of metal or plastic, wherein the housing is preferably made of plastic, since it can be prepared so easily and inexpensively by injection molding or other molding process for plastic parts.
  • the housing can be connected in various ways to the first of the be mounted movably mounted rail elements, for example by screwing or by means of a clip or locking mechanism.
  • the rail element expediently has an opening passing through the rail element, into which the housing is inserted and fastened.
  • the provision of a passage opening on the first rail element for fastening the housing is expedient, since the device has to reach through to the opposite second rail element, where the friction element and the latching element come into contact with the second of the mutually movably mounted rail elements.
  • the housing of the device according to the invention is fixed to the inside of the first rail element, which faces the second rail element.
  • this would require a relatively large gap between the mutually movable rail elements to accommodate therein the housing, the two spring elements and the locking element and the friction element.
  • the device according to the invention passes through an opening in the first of the two rail elements displaceable relative to one another.
  • the device according to the invention comprises at least two spring elements, namely at least one detent force spring, which biases the detent element against the second of the mutually movably mounted rail elements, and a friction force spring, which presses the friction element against the second of the mutually movable rail elements biased.
  • the latching element is designed so that it can engage with the latching recesses on the second rail element for the releasable locking of the two mutually movably mounted rail elements, when it comes to lie in the process of rail elements over a latching recess.
  • the latching recess on the second rail element is a recess or a bore into which the latching element can penetrate to some extent.
  • the locking element should be brought out of engagement with the recess by the application of a relative to the normal motive force increased force, so that the movement can be continued.
  • the locking element and / or the recesses in the two directions of travel curves or slopes are provided for the retraction and extension of the locking element in the recess.
  • the latching element is a ball which is pressed biased by the latching force spring against the second of the mutually movable rail elements mounted.
  • the latching recesses can then be, for example, circular bores with a diameter smaller than that of the spherical latching element. If the spherical detent element is guided by the linear movement of the rail elements over the recess, the ball occurs - -
  • the latching element preferably the spherical latching element, out of the latching recess and to disengage the latching and to continue the linear movement of the rail elements, an increased force must be applied to the rail elements in the direction of travel, the size of which, among other things depends on the strength of the detent force spring.
  • the shape and size of the locking element as well as the shape and size of the locking recess play a role for the forces when releasing the locking.
  • the housing has a preferably cylindrical housing wall and, on the side facing away from the second rail element, a housing cover on which the at least one detent force spring and the at least one friction force spring are supported.
  • This housing cover can be fixedly connected to the cylindrical housing wall, if appropriate in one piece, so that the housing is essentially cup-shaped.
  • the housing cover is formed as a separate part, which on the cylindrical housing wall, for. B. by screwing or clipping, can be releasably secured to open the case on the side of the housing cover, if necessary.
  • means for changing the length of the detent force spring between the support point on the housing and the detent element are provided on the housing.
  • a means for varying the length of the detent force spring may be, for example, that the position of the support point of the detent force spring on the housing can be changed by a screw thread.
  • Such means for changing the length of the detent force spring on the housing have the advantage that the detent force can also be subsequently changed. Otherwise, the locking force is determined by the detent force spring used and its initial compression.
  • means for changing the length Reibkraftfeder between the support point on the housing and the friction element for adjusting the frictional force of the friction force spring are provided on the housing.
  • the embodiment may be similar to those of the means for varying the length of the detent force spring.
  • the device according to the invention may have the means for changing the detent force spring alone or the means for changing the length of the friction force spring alone. Alternatively, the device according to the invention can - -
  • the at least one locking force spring and / or the at least one friction force spring are designed as spiral compression springs.
  • Other types of compression spring elements may also be employed and are not excluded from the scope of the present invention.
  • Other types of spring elements are for example gas springs or oil pressure springs.
  • helical compression springs are preferred for use in the device of the invention because they are significantly less expensive and have better spring characteristics for use in the present invention.
  • the at least one detent force spring and the at least one friction force spring are designed as helical springs with different diameters and arranged coaxially with one another in the direction of their spring force.
  • the detent force spring is preferably the spring element with the smaller diameter and the friction force spring is the spring element with the larger diameter, so that the detent force spring extends coaxially in the interior of the friction force spring.
  • the friction element is a substantially cup-shaped or cylindrical element with a cylindrical outer wall and on the side facing the second rail element a from the edge of the cylindrical outer wall inwardly extending annular bottom, wherein an end portion of the Reibkraftfeder extends within the cylindrical outer wall and supported on the annular bottom to bias the friction against the second of the mutually movable rail elements biased.
  • the annular bottom has a passage opening through which the latching element partially passes.
  • the through hole in the annular bottom of the friction member is suitably a circular aperture.
  • this opening has a diameter which is at least slightly smaller than the diameter of the spherical locking element, so that then a segment of the spherical locking element in the direction of the second rail element and, for example, in a recess can pass through the annular bottom of the friction element, but due to the slightly smaller diameter of the through hole is secured against falling out.
  • the force to be applied for the process or the frictional resistance is determined on the one hand by the force of the friction force spring and on the other by the shape, size and roughness of the applied to the second rail element portion of the friction element.
  • other factors affect the motive force to be applied to the movement of the rail elements, such as the size of the rail elements, the bearing between the rail elements, and the load applied to the rail elements.
  • the latching element which is prestressed under the force of the latching force spring, presses against the second of the rail elements and thus increases the motive force to be applied.
  • the friction element described above which has the cylindrical outer wall and the substantially annular bottom, a further cylindrical wall extending from the edge of the through hole in the annular bottom coaxial with the cylindrical outer wall, wherein an end portion of the Friction force spring between the cylindrical outer wall and the further cylindrical wall extends and an end portion of the detent force spring extends within the further cylindrical wall.
  • This additional cylindrical wall stabilizes the structure of the friction element and the position of the friction force spring in abutment with the friction element.
  • this additional cylindrical wall is suitable for guiding the locking force spring extending inside this wall and the latching element arranged at the end of the latching force spring and for preventing it from being tilted or tilting while losing its functionality.
  • the friction element is positively inserted into the substantially cylindrical housing wall, wherein the friction element can be pressed against the force of Reibkraftfeder in the housing, but preferably secured against falling out of the housing is. Securing the friction element against falling out of the housing is ensured in a preferred embodiment in that on the cylindrical outer wall of the friction element on the outside a circumferential bead or at least portions thereof is / are provided and on the cylindrical housing wall, this bead from the outside encompassing hooks are provided.
  • the present invention also comprises telescopic rails and linear guides with at least two track elements mounted in mutually displaceable fashion and a device of the type described herein for releasably locking the rail elements and adjusting the motive force to be applied for the method.
  • High-quality telescopic rails and linear guides are usually ball bearings, the balls are held by a ball cage between the rail elements at a uniform distance from each other and secured against unwanted moving and falling out.
  • the conventional telescopic rails and linear guides have rail elements with a substantially C-shaped profile, wherein the raceways for the balls are formed on the legs or end portions of the C-shaped profiles. Each rail element thus has two opposing raceways.
  • the ball cage extends for stability reasons usually between these raceways, so that a ball cage is provided for both races.
  • the connecting portion of the ball cage between the two raceways extends between the two mutually movable rail elements. He would therefore the locking elements and the friction element of the present invention in the process of rail elements against each other in the way.
  • the ball cage therefore expediently has a passage opening extending in the longitudinal direction, through which at least the friction element and the latching element pass to the second of the rail elements mounted to move relative to one another.
  • the device according to the invention has the advantage that it combines the two functions of the releasable framing of two rail elements mounted to move relative to one another and the setting of the motive force to be applied for the method in one component. Nevertheless, locking force and motive force can be set independently of each other, namely on the respective spring elements used as well as the locking and friction elements.
  • the device according to the invention requires little space and can be used in many different types of telescopic rails and linear guides without changes. Due to the simplicity of the components and the ease of installation, it is inexpensive to manufacture and install. Since the system is permanently under tension, the clearance between the components can be compensated, so that nevertheless higher tolerances are possible. Changes in the components due to temperature fluctuations are compensated by the bias in the system.
  • Figure 1 shows an inventive device for releasably locking two mutually movable rail elements of a telescopic rail or a linear guide and for adjusting the applied for the process movement force from the side (top view) and in cross section (bottom view).
  • FIG. 2 shows the individual parts of the device according to FIG. 1 in an exploded cross section.
  • Figure 4 shows an alternative embodiment of the device according to the invention for releasably locking two mutually movable rail elements of a telescopic rail or a linear guide and for adjusting the applied for the process motive force with devices for adjusting the latching force and the frictional force in the cross section from the side (top view) and in broken perspective view (bottom view).
  • FIGS. 1 and 2 show a device according to the invention for the releasable locking of two rail elements of a telescopic rail or a linear guide displaceable relative to one another and for adjustment of the motive force to be applied for the method in a view from the side (FIG. 1 above), in cross-section (FIG. and as disassembled exploded view in cross section ( Figure 2).
  • the device comprises a housing 1 with a substantially cylindrical housing wall 2 and a housing cover 3 made as a separate component but placed on the housing wall 2.
  • the parts of the housing are produced by injection molding from plastic.
  • the device further comprises a detent force spring 4 and a friction force spring 6, both made of metal as helical compression springs of different diameters.
  • the detent force spring 4 with the smaller diameter extends coaxially within the friction force spring 6 with the larger diameter.
  • Both springs 4 and 6 are supported upwardly on the housing cover.
  • means for subsequent change of the supporting position of the springs for a fine adjustment of the spring forces are not provided, but can be realized in the manner described.
  • the housing cover 3 could be screwed into and / or screwed out of the housing outer wall 2 with a screw thread in order to subsequently be able to adjust the spring lengths to a limited extent.
  • a friction element 7 is provided, which is biased by the friction force spring 6 in Figures 1 and 2 down becomes.
  • the friction element 7 consists of a cylindrical outer wall T and an annular bottom 7 "which extends towards the center from the lower edge of the cylindrical outer wall T.
  • a passage opening 8 is provided, through which the spherical detent element 5 partially passes. From the inner edge of the annular bottom 7 "or from the passage opening 8 extends upwards another cylindrical wall 7 '", in the interior of which the detent force spring 4 and the detent element 5 extend in part. This further cylindrical wall 7 '''is adapted to guide the spherical detent element 5.
  • the passage opening 8 in the annular bottom 7'' has a slightly smaller diameter than the spherical detent element 5, so that the ball 5 is biased downwards by the detent force spring 4 and against the edge of the through hole 8 is pressed without the ball 5 can fall out.
  • the friction element 7 has on the cylindrical outer wall T a circumferential bead or a
  • Friction element 7 held in the cylindrical housing outer wall 2 and in the housing against the spring preloads can be pressed, but not fall out of the housing.
  • Figure 3 shows a ball-bearing telescopic rail with an outer rail 10 and an inner rail 11, both having a substantially C-shaped profile, wherein the raceways for the ball bearing are respectively arranged on the legs or end portions of the C-shaped profile.
  • the ball bearing arranged between the rail elements 10 and 11 comprises a ball cage 12 and two sets of balls 13 arranged on opposite sides of the rail elements.
  • the inner rail 11 has a receiving opening 15 into which the device according to the invention according to FIGS. 1 and 2 is inserted.
  • the lower illustration in FIG. 3 shows an enlarged detail of the rail section of the upper illustration in FIG. 3, to which the device according to the invention is inserted.
  • the friction element 7 bears with prestress on the inside of the outer rail 10 with the smooth surface of the annular bottom 7 "and exerts a frictional force on the outer rail 10.
  • Detent recesses 14 are provided on the outer rail 10 as circular through-holes can be seen well below in Figure 3, the spherical locking element 5 enters into such a recess 14, when the locking element 5 comes to rest in the process of rail elements over the recess 14.
  • the ball cage 12 shown in Figure 3 consists of one piece, ie it has between the two opposing ball raceways connecting pieces extending between the rail elements 10 and 1 1. So that the invention mounted on the inner rail 11 Invention According to the device with the latching element 5 and the friction element 7 can come into contact with the inner surface of the outer rail 10 and the ball cage does not interfere with the movement of the rail elements, the ball cage 12 has a longitudinally extending passage opening 16 which is arranged is that the device according to the invention can be moved therebetween.
  • the embodiment of the device according to the invention shown in Figure 4 corresponds substantially to that of Figures 1 and 2 with the difference that on the housing cover 3 means for changing the length of the detent force spring 4 between the support point on the housing and the locking element 5 and means for changing the length of the friction force spring 6 between the support point on the housing and the friction element 7 are provided.
  • the means for changing the length and thus the spring force of the friction force spring 6 consists in that the housing cover 3 can be screwed in and out within certain ranges within the outer wall 2 of the housing, which is provided with a corresponding internal thread , whereby the length of the friction force spring is changed.
  • the means for changing the detent force spring 4 are that in the housing cover 3, the support for the detent force spring 4 is a substantially cylindrical part 9 with an external thread, which screwed into a provided with a corresponding internal thread, cylindrical portion of the housing cover 3 and unscrewed can be, whereby the length of the detent force spring 4 is extended or shortened.
  • the two means for varying the lengths of the detent force spring 4 and the Reibkraftfeder 6 the respective latching and frictional forces after the installation of the device according to the invention on a telescopic rail or a linear guide can be adjusted later fine.

Landscapes

  • Bearings For Parts Moving Linearly (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

L'invention concerne un dispositif d'encastrement amovible de deux éléments rails (10, 11) d'un rail télescopique ou d'un guide linéaire, logés coulissants l'un par rapport à l'autre, et de réglage de la force de déplacement à produire pour le coulissage. Le dispositif comporte un boîtier (1) fixé sur un premier élément rail (11), au moins un élément d'encastrement (5), au moins un ressort à force d'encastrement (4) s'appuyant sur le boîtier et précontraignant l'élément d'encastrement (5) contre le deuxième élément rail (10), au moins un élément de friction (7) et au moins un ressort à force de friction (6) s'appuyant sur le boîtier et comprimant l'élément de friction (7) contre le deuxième élément rail (10) de façon précontrainte.
EP09745759.2A 2008-05-13 2009-05-13 Encastrement par gravité et réglage de la force de déplacement Active EP2273902B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008023246A DE102008023246B4 (de) 2008-05-13 2008-05-13 Fallende Raste und Bewegungskrafteinstellung
PCT/EP2009/055770 WO2009138427A1 (fr) 2008-05-13 2009-05-13 Encastrement par gravité et réglage de la force de déplacement

Publications (2)

Publication Number Publication Date
EP2273902A1 true EP2273902A1 (fr) 2011-01-19
EP2273902B1 EP2273902B1 (fr) 2013-07-10

Family

ID=40999971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09745759.2A Active EP2273902B1 (fr) 2008-05-13 2009-05-13 Encastrement par gravité et réglage de la force de déplacement

Country Status (8)

Country Link
US (1) US8596899B2 (fr)
EP (1) EP2273902B1 (fr)
JP (1) JP5512658B2 (fr)
CN (1) CN102026561B (fr)
DE (1) DE102008023246B4 (fr)
ES (1) ES2429124T3 (fr)
MX (1) MX2010012159A (fr)
WO (1) WO2009138427A1 (fr)

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Also Published As

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DE102008023246B4 (de) 2010-04-08
CN102026561A (zh) 2011-04-20
JP5512658B2 (ja) 2014-06-04
MX2010012159A (es) 2011-04-26
DE102008023246A1 (de) 2009-11-26
JP2011520486A (ja) 2011-07-21
US8596899B2 (en) 2013-12-03
WO2009138427A1 (fr) 2009-11-19
ES2429124T3 (es) 2013-11-13
CN102026561B (zh) 2014-11-19
EP2273902B1 (fr) 2013-07-10
US20110123258A1 (en) 2011-05-26

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