Source: https://patents.google.com/patent/CA2144644A1/en
Timestamp: 2020-06-06 14:11:07
Document Index: 68468264

Matched Legal Cases: ['art 2', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 23', 'art 21', 'art 23', 'art 21', 'art 21', 'art 23', 'art 21', 'art 23', 'art 21', 'art 22', 'art 23', 'art 21', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23']

CA2144644A1 - A detent device for chests of drawers and the like - Google Patents
A detent device for chests of drawers and the like
CA2144644A1
CA2144644A1 CA002144644A CA2144644A CA2144644A1 CA 2144644 A1 CA2144644 A1 CA 2144644A1 CA 002144644 A CA002144644 A CA 002144644A CA 2144644 A CA2144644 A CA 2144644A CA 2144644 A1 CA2144644 A1 CA 2144644A1
CA002144644A
1993-07-15 Priority to DEG9310582.7 priority Critical
1993-07-15 Priority to DE9310582U priority patent/DE9310582U1/en
1994-06-23 Application filed by Detlev Uthoff, Paul Hettich Gmbh & Co. filed Critical Detlev Uthoff
1995-01-26 Publication of CA2144644A1 publication Critical patent/CA2144644A1/en
The object of the present invention is a detent device for the releasable attachment of drawers or the like to a guide rail, with at least one detent element that is attached at the front end of the moveable part of the guide rail.
The detent element (10) has a flexibly elastic operating arm (14) that is fitted with detent means (17) that will absorb vertical forces. The moveable part of the guide rail (3) is fitted with a second detent means (6) that absorbs horizontal forces, and which can be a component part of the detent element (10). This configuration means that the whole of the detent device can withstand very heavy loads but is easy to operate and precludes the possibility of incorrect operation.
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The present invention relates to a detent device that permits the releasable attachment of drawers, slides, or the like to a guide rail, this having at least one detent element that is attached to the front end of the moveable part of the guide rail.
Detent devices of this kind are already known. However, these known detent devices entail the disadvantage that they incorporate visible, which is to say easily accessible, activating means. This is visually unappealing. In addition, because of the easy accessibility, there is a danger of unintentional release, with all its negative consequences such as the risk of accident, damage, and the like.
In the case of heavy, which is to say filled, drawers, slides, or the like, if these are opened and closed violently, the detent devices can be heavily loaded because of the relatively large retarding or accelerating forces that are generated. This can cause the detent means to be deformed, and this can lead to damage or can impair the detent function. This could be considerable viewed against the background of the risk of accident.
It is the task of the present invention to create a detent device that can withstand heavy loads, that is easily operated, but which precludes any possibility of erroneous operation, and which can be installed so as to be almost invisible, i.e., is not visually disturbing, and can be secured rapidly and without any problem.
This problem has been solved in that the detent element incorporates a first flexibly sprung operating arm with a detent 214~6~
means that preferably absorbs vertical forces, and in that the detent element and/or the moveable part of the guide rail supports a second detent means, which can absorb horizontal forces, in the contact area of the drawer.
Additional advantageous configurations of the present invention are described in the secondary claims.
The advantages that can be achieved with the present invention are particularly such that each detent means absorbs forces that act in a specific direction (horizontally or vertically).
What this means is that when the drawer, slide, or the like is opened or closed, horizontal forces that are generated in the direction of the guide rail are absorbed by the first detent means and the vertical forces that occur in the sense of the drawer, slide, or the like being removed are absorbed by a second detent means.
The horizontal forces, which are at times considerable, which are generated in the case of large and fully packed drawers/slides and the like when these are violently opened or closed and which occur as a result of acceleration/retardation are absorbed without any problem by the first detent means/detent catches that are effectively positioned, without there being any of the negative factors described heretofore.
Two preferred embodiments are shown in the drawings, and these are described in greater detail below. These drawings show the following:
igure 1: a plan view of a guide rail of a first embodiment with the first detent element installed;
Figure la: a side view of figure 1, viewed in the direction indicated by the arrow A in figure l;
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igure 2: a view corresponding to figure 1, although with the drawer installed and locked; igure 2a: an enlarged view of figure 2; igure 3: a view as in figure 2, although with the drawer as yet unlocked; igure 4: detent element shown separately in side view; igure 5: the detent element in cross-section on the line V-V
in figure 6, when installed; igure 6: the detent element in plan view; igure 6a: the detent element in side view, as viewed in the direction indicated by the arrow C; igure 6b: the detent element in side view, as viewed in the direction indicated by the arrow D; igure 7: a plan view of a guide rail of a second embodiment with a detent element installed; igure 7a: a side view of figure 7, as viewed in the direction indicated by the arrow E in figure 7; igure 8: a perspective view of the detent element installed in the guide rail; igure 8a: the detent element in perspective; igure 9: a view corresponding to figure 7, in partial cross-section, with the drawer installed and locked; igure 10: the detent element in cross-section; igure 11: the detent element in plan view; igure lla: the detent element in side view, as viewed in the direction indicated by the arrow F in figure 11; igure llb: the detent element in side view, as viewed in the direction indicated by the arrow G in figure 11; igure 12: a view corresponding to figure 9, with the furniture casing shown in part; igure 12a: a view corresponding to figure 12 with the drawer installed on the guide rail but not as yet locked in position; igure 12b: a view corresponding to figure 12, although with the drawer locked in position and pulled out.
21~16~4 The first embodiment that is shown in figure 1 to figure 6b shows a known guide rail 1, not described in greater detail, with a supporting part 2 that can be secured to the furniture and a guide part 3 that is supported on this so as to be able to slide and which is attached to the drawer.
At the front end 4 of the guide part 3 that is installed on the drawer there is a detent element 10. The detent element 10 supports an attachment part lOa (figures 4, 6), of which the cross-sectional shape can be matched to the outside shape of the guide part 3 that is attached to the drawer, so that the attachment part lOa is precisely positioned after being inserted into the guide part 3 that is attached to the drawer. The final attachment of the guide part 3 can be effected by screws, rivets, shaped detent catches, by reinforcing grooves, stamping, or the like.
In the embodiment that is shown, the attachment part lOa is in the form of catches that are pressed out from the guide part 3, and these catches engage in corresponding recesses 12 that are arranged on the attachment part lOa (figures 5, 6). A first flexibly elastic operating arm 14 is formed on the area 13 of the detent element 10 that does not disappear into the guide part 3;
this extends downward, almost parallel to the front panel 7 of the drawer 8. The operating arm 14 runs in a curve 15 and ends in an angled section 16 that is remote from the drawer panel 7, which makes it easier to grasp. The curve 15 improves the elasticity/deformability of the operating arm 14. In its middle section, the operating arm incorporates a detent catch 17 that operates in conjunction with the detent opening 9 on the drawer 8, which runs parallel to the front panel 7 of the drawer, in a manner that is described in greater detail below.
A second, essentially more rigid operating arm 18 can be formed below, in the area 13, and the function of this will be ., - - 21~-464~ ~
-described below. As is shown in figures 5, 6a, an additional section 19 can be formed on the detent element 10 and this ensures that the drawer 8 can be held in the lateral direction with relatively little free play.
In the front part of the drawer, where the drawer 8 rests on the guide element 3, there is an additional detent opening 5 that acts in conjunction with a detent catch 6 on the detent element or the guide element side; this will also be described in greater detail below.
In the embodiment that is shown in figures 1 to 6b this detent catch 6 is pressed out of the guide element 3 of the guide rail 1 on the drawer side. The detent catch 6 could, of course, be shaped on the detent element 10 itself. The version corresponding to the example that is illustrated (figure 2a) entails the advantage that because of the metal or sheet metal construction of the guide element 3 and the drawer 8 the detent is formed on a sheet metal or metal basis that can withstand very heavy loads, and which is suitable, in particular, for large, fully packed, i.e. heavy, drawers and the like. This should be viewed in light of the fact that in the case of rapid or violent opening or closing, because of the acceleration/retardation of great masses, as has already been discussed, very large forces are generated in the direction of movement and these can place extremely large loads on the detent connection that consists of the detent opening 5 and the detent catch 6.
Figure 3 illustrates the manner in which the detent connection described above works: the drawer 8 is installed on the guide rail 1 or the guide part 3 that is drawn out, as is shown in figure 3, and then pushed into the furniture casing in the direction indicated by the arrow B.
21446~ -It is assumed that known detent means, consisting of hooks/eyes or the like, and which are not described in greater detail herein, are formed at the end of the drawer 8 and at the end of the guide part 3 so that when the drawer is pushed in the direction indicated by the arrow B these lock the drawer 8 down at its rear end to the guide part 3 so as to prevent it from lifting. These locking elements do not constitute an object of the present invention and for this reason will not be described in greater detail.
When the drawer 8 is pushed in the direction indicated by the arrow B, the constellation that is shown in Figure 3 results at the front end of the drawer; in this, the guide part 3 comes to rest a known stop, not described in greater detail herein, within the guide rail 1, and this permits no further movement in the direction indicated by the arrow B. The operating arm 14 with its detent catch 17 springs back in the direction indicated by the arrow B by a small distance during the continued movement of the drawer 8 in the direction indicated by the arrow B. If the detent opening 5 and the detent catch 6 coincide, the detent opening 5 drops over the detent catch 6 under the action of the weight of the drawer.
This small vertical movement of the drawer 8 simultaneously causes the detent catch 17 and the detent opening 9 to line up and the operating arm 14 that is moved by spring action presses the detent catch 17 into the detent opening 9. Now the drawer is in its end position and is properly locked in the horizontal direction--in the direction in which it is pulled out--by the detent means 5, 6 and in the vertical direction by the detent means 9, 17 (figure 2a). As has already been discussed, the known detent means, which is not described in greater detail, at the rear end of the drawer 8 have become effective in the course of being slid on.
214464~i Under certain circumstances, unacceptable manufacturing tolerances may mean that the guide part 3 has not reached the end stop (not described in greater detail) within the guide rail 1 although the front panel 7 of the drawer is already in contact with the casing of the furniture, so that the movement of the drawer in the direction indicated by the arrow B ceases without the drawer 8 and the guide part 3 entering-into detent.
In such cases, the detent action can be effected if the user grasps the second operating arm 18 that has been discussed above and pulls this, and thus the guide part 3, in the direction indicated by the arrow K, which is to say towards the front panel 7 of the drawer (figure 2a) when the detent action between the drawer 8 and the guide part 3 will be brought about.
In order to separate the drawer 8 from the guide rail 1 or from the guide part 3, the user presses the operating arm 16 in the direction indicated by the arrow L (figure 2a). When this is done, the detent means 9, 17 are disengaged and the drawer can be raised and drawn out or raised in the direction indicated by the arrow M. This also results in the disengagement of the locking (not described in greater detail) in the rear part of the drawer 8 and the drawer 8 can then be released completely from the guide part 3.
Figures 7 to 12b show a second embodiment in which the drawer 8 is attached to a so-called complete slides/over-slides. Complete slides/over-slides are, as a rule, understood to be multi-part guide rails that make it possible to remove the drawer or the like from the casing of the furniture completely. Because of their different spatial extent, complete slides/over-slides of this type require that the detent elements be matched.
As is shown in figures 9, 10, the detent element 5 is inserted into the drawer/guide part 23 with an attachment piece 25a and 21~46~4 there, as has already been descrlbed in the case of the flrst embodlment, secured by means of relnforclng seams, stamplngs, or by rlvets, plns, screws 26 and the llke.
The flrst operatlng arm 27 wlth the detent catch 28 18 SO angled that lt polnts lnto the lntervenlng space 29 that ls formed by the carrler part 21 and the.gulde part 23 when the drawer 8 ls closed (flgures 8, 9).
It can be seen from flgure 7 that the gulde rail 20 conslsts, ln the known manner, from a supportlng part 21 on the furnlture, an lntermedlate member 22 that ls mounted on the supportlng part 21 so as to be slldable, and a gulde part 23 that can be secured to the drawer and which ls slmllarly supported so as to be slldable ln the upper part of the lntermedlate member 22.
In other words, the lntermedlate member 22 together wlth the supportlng part 21 that ls mounted on the furnlture form a flrst wlthdrawal gulde and with the gulde part 23 that ls mounted on the drawer forms a second wlthdrawal gulde, thls wlthdrawal movement belng synchronlzed through a frlctlon roller 24 that ls known per se.
Analogously to the flrst embodlment (flgure 4), ln thls embodlment too, provlslon ls made for an addltlonal operatlng arm 30 that ls essentlally orlented downward. Thls operatlng arm 30 can, on the one hand, be a stop surface 31 for the flrst wlthdrawal gulde (flgure 9) that ls formed from the supportlng part 21 and the lntermedlate part 22. On the other hand, however, lt can also serve as an operatlng handle ln the event that unfavourable manufacturlng tolerances prevent a normal detent actlon of the drawer 8 on the gulde part 23 when the drawer 8 ls belng lnserted--as has been descrlbed ln the case of the flrst embodiment--ln order to draw the gulde part 21 in the dlrectlon of the front panel 7 of the drawer--as descrlbed ln 21~4644 connection with the first embodiment--in order to bring about the desired detent action in this way.
In this embodiment too, the detent action is effected by a first detent opening 5 that is provided on the drawer 8 that works in conjunction with a detent catch 32 that is raised from the guide part 23, and with a second detent opening 9 that is provided on the drawer 8 in the area of the front panel 7 of the drawer, and which works in conjunction with a detent catch 28 that is formed on the first operating arm 27.
As is shown by figures 8 to llb, the second operating arm 30 incorporates a hollow space 33 through which the first operating arm 27 can pass. This ensures that the operating arm 30 can fulfil its stop or limiting function (figure 9) and, on the other hand, the operating arm 27 is readily accessible when the drawer 8 is closed and yet is not troublesome when the drawer 8 is closed.
The drawer 8 enters into detent with the guide part 23 in a similar manner as that described for the first embodiment: the drawer 8 is installed and slid in the direction indicated by the arrow H (12a) or by withdrawing the guide part 23 by means of the operating arm 30 in the direction of the front panel 7 of the drawer when the drawer 8 is pulled out.
Here, too, the locking means that are known per se and which are not described in greater detail herein, are effective at the rear end of the drawer 8.
In the event that the drawer 8 is to be released from the guide part 23, when the drawer is pulled out, the operating arm 27 is pressed in the direction indicated by the arrow I (figure 12b).
The detent means 9, 28 are disengaged and the drawer 8 can be 21~464~
raised and then withdrawn from the guide rails or the guide part 23.
1. A detent device for the releasable attachment of a drawer, slide, or the like to a guide rail, with at least one detent element that is attached at the front end of the moveable part of the guide rail, characterized in that the detent element (10, 25) incorporates a first sprung operating arm (14, 27) with detent means (9, 17; 9, 28) that will absorb vertical forces; and in that the detent element (10, 25) and/or the moveable part of the guide rail (3, 23) supports a second detent means (5, 6; 5, 32) that absorbs horizontal forces in the supporting area for the drawer (8).
2. A detent device as defined in claim 1, characterized in that the detent means comprise catches (17, 6; 28, 32) on the detent element or on the guide rail, on the one hand, and, on the other hand, openings (9, 5) on the drawer.
3. A detent device as defined in claim 1 and/or claim 2, characterized in that the first detent opening (5) is arranged on a supporting area for the drawer (8) that extends parallel to the guide rail (1, 20) in the vicinity of the detent element (10, 25) and the second detent opening (9) is arranged on a part of the drawer (8) that is approximately parallel to the front panel (7) of the drawer.
4. A detent device as defined in one or more of the claims 1 to 3, characterized in that the detent element (10, 25) supports a second essentially rigid operating arm (18, 30) at a slight distance away from the flexibly elastic operating arm (14, 27).
5. A detent device as defined in one or more of the claims 1 to 4, characterized in that the detent element (10, 25) supports an attachment piece (10a, 25a) that is matched to the outline of the guide rail or of the guide part (3, 23) which can preferably be secured to the guide part (3, 23) by stampings/deformations (11) on the guide rail.
6. A detent device as defined in one or more of the claims 1 to 5, characterized in that the second operating arm (30) incorporates a hollow space (33) through which the first operating arm passes.
7. A detent device as defined in one or more of the claims 1 to 6, characterized in that the detent element (10, 25) supports a piece (19, l9a) that is oriented sideways and which fixes the position of the drawer (8) or the like.
8. A detent device as defined in one or more of the claims 1 to 7, characterized in that the detent element (10, 25) can be secured by means of shaped sprung detent means by being snapped onto the guide rail/guide parts (3, 23).
CA002144644A 1993-07-15 1994-06-23 A detent device for chests of drawers and the like Abandoned CA2144644A1 (en)
DEG9310582.7 1993-07-15
CA2144644A1 true CA2144644A1 (en) 1995-01-26
CA002144644A Abandoned CA2144644A1 (en) 1993-07-15 1994-06-23 A detent device for chests of drawers and the like
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