1. Field of the Invention
The present invention generally relates to closing devices for drawers, often incorporated into drawer slides otherwise known as self-closing drawer slides. Such drawer slides tend to be used in articles of furniture, such as cabinets, for assisting in moving a drawer to a fully closed position within the cabinet body.
2. Discussion of the Prior Art
Articles of furniture having drawers, such as cabinets, typically include drawer slides for mounting the drawers to the cabinet and for providing a way to move the drawer between a fully closed position within the cabinet body to an open position with the drawer extending outward from the cabinet body. Standard drawer slides tend to be mounted in pairs, with one on each of the left and right outer sides of the drawer. In such configuration, one drawer slide member is attached to the cabinet body and a second drawer slide member is attached to the outer side of the drawer. Bearings, such as ball or roller bearings, typically are disposed between the drawer slide members for smooth movement of the drawer relative to the cabinet body. The bearings may be organized and located within a bearing retainer. Also, there may be a third drawer slide member coupled to and between the first and second drawer slide members, with a corresponding additional set of bearings, to permit further extension of the drawer from the cabinet body. Mounting drawer slides on the sides of the drawer necessarily requires that the drawer body be considerably narrower than the opening in the cabinet for the drawer.
Alternatively, drawer slides may be of an undermount configuration wherein the second drawer member of each of the drawer slides is located beneath and at a respective outer side edge of the drawer bottom. In the undermount configuration, the drawer may be much closer to the width of the opening in the cabinet because each drawer slide member is not located entirely between a cabinet side and a drawer side. In both the standard and undermount configurations, it is desirable to assist a user in closing a drawer, to prevent rebound of the drawer, and to tend to hold the drawer in a closed position.
There are numerous self-closing drawer slide devices designed to be engaged as a drawer is being closed and reaches a predetermined distance from the cabinet face. Such devices often incorporate a spring to help push or pull the drawer to the fully closed position. It is common for these devices to include a latching member that is tiltable or pivotable, so as to be used in controlling the movement of the drawer relative to the cabinet body within a pre-selected range of motion of the drawer. Such prior art devices often include a pin or tab to force the latching member to tilt or pivot from a latched to an unlatched position or vice versa. In turn, either the latching member or pin commonly is associated with one of the drawer sides or slide members, while the other corresponding component is associated with the other drawer slide member.
In some other prior art devices, the latching member may be on a slider that moves both longitudinally and laterally, along an L or J shaped slot in a planar wall of a housing, as the drawer moves within a pre-selected range of travel when nearly closed. These devices also may include a specialized angular slot at the end of one of the drawer slide members, so as to engage a post or other protrusion extending from the body of the slider, to effectively move the latching member between latched and unlatched positions.
While such tiltable or pivotable latching member and pin assemblies function for their intended purpose, they present potential problems in regard to wear of the pivoting and spring components, noise associated with the pivoting components as they move from one position to another, as well as noise associated with the spring as it is bent or shifts within its mounting relationship with the latching member or housing as the latching member tilts, pivots and/or translates. In some prior art devices, a coiled spring is used and moves between a compressed and a relaxed position to push a drawer closed. However, use of a spring in compression requires control of the spring as it is compressed, to prevent the spring from buckling outward in the middle. Sometimes the spring in such devices is referred to as a compression spring. To control a compression spring, it has been common to use a pin or rod through the center of the spring, or walls in close relation to each other to contain the spring at one end of the latching member. In other prior art devices, springs are used and are stretched with movement of the slider to the latched position, with the springs sometimes being referred to as extension springs. This stretching may occur with the spring having to bend or interfere with housing walls due to the path of the slider.
It is desirable to provide a closing device for drawers that can be incorporated into drawer slides, including undermount drawer slides, while avoiding the potential disadvantages of self-closing drawer slides that use latching members that tilt, rotate or translate both longitudinally and laterally. Accordingly, it is desirable to provide a simplified closing device which eliminates the tilting, pivoting or multi-directional translational movement of a latching member. Thus, it is desirable to provide a housing and a simplified slider having a latching member where the slider moves only along one axis. This is desirable to avoid excess noise that may be associated with components that rotate or pivot from one extreme position to another. This simplified housing and corresponding slider with latching member is suited for use with springs that may be extended or compressed during the course of the movement to the latched position. Indeed, this permits a spring to be used in tension to avoid the need for a pin or rod through the spring or containment walls, either of which prevents buckling via contact with the coils of the spring as it moves, but which also tends to impart undesirable noise due to the contact necessary to prevent the buckling. Alternatively, the invention may be configured to use a spring in compression, while still benefiting from the simplified structure that permits relatively limited movement of the slider having the latching member attached thereto. Hence, the present invention addresses shortcomings in prior art self-closing drawer slide assemblies, while providing quiet, smooth-operating closing devices for use with a drawer slide.
The purpose and advantages of the invention will be set forth in or otherwise apparent from the description and drawings that follow, as well as will be learned by practice of the invention.
The present invention is generally embodied in a closing device for drawers. In a first aspect of the invention, a closing device, for use in an article of furniture having furniture components including a furniture body and a drawer slidable in opposite directions rearward into and forward out of the furniture body, for moving the drawer rearward to a fully closed positioned within the furniture body is presented. The closing device has a first slide member connected to the drawer, a second slide member connected to the cabinet and slidably coupled to the first slide member, a housing connected to the second slide member, a slider slidably received in the housing and having a resilient latching arm. The resilient latching arm further has a slot and a latching portion, with the resilient latching arm being bendable between a first position, wherein the latching portion engages a notch on the housing and a second position wherein the latching portion is released from the notch and the slider is permitted to move rearward within the housing. The closing device further has a pin member connected to the first slide member and engagable with the slot in the resilient latching arm, and a spring disposed between the housing and the slider, with the spring being adapted to urge the slider to move rearward relative to the housing.
In a further aspect of the invention, a closing device, for use in an article of furniture having furniture components including a furniture body and a drawer slidable in opposite directions rearward into and forward out of the furniture body, for moving the drawer rearward to a fully closed positioned within the furniture body is presented. The closing device has a pin member adapted to be mounted to one of the furniture components, a housing adapted to be mounted to the other of the furniture components, a slider having a resilient latching arm, wherein the slider slidably engages the housing and is movable in a rectilinear path relative to the housing. The resilient latching arm further has a latching portion and a slot, wherein the pin is adapted to engage the slot and when the pin engages the slot the slider is movable between a first position wherein the pin extends into the slot and a second position wherein the pin forces the resilient latching arm to bend until the latching portion engages a notch on the housing and the pin is removed from the slot. The closing device further has a spring engaging the slider and the housing to urge the slider toward the first position such that when the pin is engaged in the slot and the latching portion is not engaged in the notch on the housing, the furniture component to which the pin is mounted is urged to move relative to the other furniture component so as to move the drawer rearward to a closed position.
In a further aspect of the invention, the closing device may be configured for use with a spring that tends to be compressed when the latching portion is engaged with the holding notch.
In yet a further aspect of the invention, the closing device may be configured for use with a spring that tends to be extended when the latching portion is engaged with the holding notch.
In still a further aspect of the invention the closing device may be configured for direct mounting to a furniture or drawer body, or for mounting on one or more drawer slide members.
Thus, the present invention presents an alternative to prior art closing devices for drawers. The present invention also simplifies the structure to permit smoother and quieter operation of a self-closing drawer slide. The present invention eliminates the wear and noise typically associated with tiltable or pivotable latching members, as well as much of the complexity and noise associated with prior art devices which utilize a latching member that moves in multiple directions in association with a slot in a planar wall.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and provided for purposes of explanation only, and are not restrictive of the invention, as claimed. Further features and objects of the present invention will become more fully apparent in the following description of the preferred embodiments and from the appended claims.
In describing the preferred embodiments, reference is made to the accompanying drawing figures wherein like parts have like reference numerals, and wherein:
It should be understood that the drawings are not to scale and provide various views of assemblies that are within the spirit and scope of the invention which may be used in various configurations of closing devices for drawers. While considerable mechanical details of closing devices for drawers, including other plan and section views of the particular components, have been omitted, such details are considered well within the comprehension of those skilled in the art in light of the present disclosure. It also should be understood that the present invention is not limited to the preferred embodiments illustrated.
Referring generally to
Referring to a preferred embodiment in
As best seen in
As shown in the preferred embodiment in
In the first preferred embodiment, housing 32 is configured to be readily attachable to a second drawer slide member 14 by use of particular features to facilitate simple, rapid and secure mounting that also reduces the potential for interference with pin 38. For instance, housing 32 includes tab 40 at forward housing end 32a. Tab 40 is preferably configured to engage aperture 50 (best seen in
Housing 32 accommodates spring 34 with spring mounting socket 60 having ridges 62 for snap fit mounting of a first formed end of spring 34 (shown in an extended position in
Slider 36 is preferably constructed of molded plastic and may be formed of a single piece or an assembly of components. Slider 36 has a body 80 atop a base 82. Base 82 extends laterally to be located below and in sliding engagement with guide wall 70 of housing 32. Base 82 includes a patterned upstanding protrusion 84 to ensure slider 36 will stay parallel to the edge of guide wall 70 as it slides forward and rearward. Upstanding protrusion 84 may alternatively be one or more independent projections. Body 80 of slider 36 terminates in a rearward end with a spring mounting socket 86, similar in structure to spring mounting socket 60 on housing 32 as previously discussed. Body 80 has a forward extending resilient latching arm 88 for interaction with housing 32 and pin 38.
In the preferred embodiment, resilient latching arm 88 extends forward and includes a first slot 90, a second slot 92, and a latch portion 94. Pin 38 is mounted in a location on first drawer slide member 12 so that when drawer D is in the closed position, fully within cabinet C, pin 38 is located within first slot 90, as best seen in
As drawer D is withdrawn from cabinet C, pin 38 engages angled forward wall of first slot 90 and thereby causes slider 36 to move forward until latching portion 94 reaches holding notch 68 in housing 32. As slider 36 is sliding within housing 32, spring 34 tends to resist such forward motion and resilient latching arm 88 is essentially not permitted to bend, due to its contact with guide wall 66. As best seen in
Also, as seen in
As drawer D is advanced toward a closed position within cabinet C, a preselected point in the travel, for instance at 2″ from a fully closed position, pin 38 will again enter first slot 90. As pin 38 enters first slot 90 and engages its angled rearward wall, pin 38 will cause resilient latching arm 88 to bend and release latching portion 94 from holding notch 68. Once latching portion 94 is released, spring 34 will urge slider 36 toward its rearward or retracted position in housing 32. As slider 36 is urged rearward, the forward wall of first slot 90 engages pin 38, which is attached to drawer D directly or by way of a drawer mounted slide member 12, and thus results in the pulling of drawer D to its fully closed position within cabinet C. Spring 34 also will tend to hold drawer D in the closed position to prevent rebound or accidental rolling outward of drawer D.
Second slot 92 is provided to permit a two-step resetting feature, in the event that latching portion 94 is inadvertently released from holding notch 68 prior to the ordinary reentry of pin 38 into first slot 90. If this occurs, slider 36 will be urged toward its rearward or retracted position by spring 34, in advance of the closing of drawer D. Thus, self-closing mechanism 30 must be reset for normal operation, with such resetting being facilitated by second slot 92. As best seen in
It will be appreciated by one of skill in the art that the invention also can be configured to have simply a one-step reset feature. If such is desire, second slot 92 can be eliminated and resilient latching arm 88 may be reconfigured to permit interference and bending of guide wall 66 and/or resilient latching arm 88 to achieve re-engagement of pin 38 with slot 90 upon return of drawer D to a closed position after inadvertent unlatching of latching portion 94 from holding notch 68.
Turning to
Self-closing mechanism 30 is coupled to second drawer slide member 104 by extension plate 106. It will be appreciated that in this way, self-closing mechanism 30 can be made to interact with a pin 138 mounted to first slide member 102 or directly mounted to the drawer side, to obtain assisted closing of a side mounted drawer slide in a manner comparable to that described above in regard to an undermount drawer slide. While the second preferred embodiment in
Turning to
In the alternative embodiment of
It will be appreciated that a closing mechanism for a drawer in accordance with the present invention may be provided in various configurations. Any variety of suitable materials of construction, configurations, shapes and sizes for the components and methods of connecting the components may be utilized to meet the particular needs and requirements of an end user. It will be apparent to those skilled in the art that various modifications can be made in the design and construction of such a self-closing mechanism without departing from the scope or spirit of the present invention, and that the claims are not limited to the preferred embodiments illustrated.
Number | Name | Date | Kind |
---|---|---|---|
3104142 | Knape et al. | Sep 1963 | A |
3139313 | Rule | Jun 1964 | A |
3243247 | Knape | Mar 1966 | A |
3574437 | Stein et al. | Apr 1971 | A |
3658398 | Abbate, Jr. | Apr 1972 | A |
3697140 | Livingston | Oct 1972 | A |
3954315 | Sanden | May 1976 | A |
3973814 | Entrikin | Aug 1976 | A |
4558908 | Rock et al. | Dec 1985 | A |
4615095 | Bessinger | Oct 1986 | A |
4659237 | Rapp | Apr 1987 | A |
5015048 | Brunnert | May 1991 | A |
5020868 | Brunnert | Jun 1991 | A |
5026176 | Jensen et al. | Jun 1991 | A |
5040833 | Brunnert | Aug 1991 | A |
5056879 | Rock | Oct 1991 | A |
5135294 | Ohshima et al. | Aug 1992 | A |
5207781 | Rock | May 1993 | A |
5275483 | Rasmussen | Jan 1994 | A |
5302016 | Lautenschlager et al. | Apr 1994 | A |
5344227 | Rock et al. | Sep 1994 | A |
5364179 | Brustle et al. | Nov 1994 | A |
5474375 | Hollenstein et al. | Dec 1995 | A |
5484209 | Weng | Jan 1996 | A |
5490724 | Domenig | Feb 1996 | A |
5580138 | Grabher | Dec 1996 | A |
5584550 | Kueng | Dec 1996 | A |
5641216 | Grass | Jun 1997 | A |
5671988 | O'Neil | Sep 1997 | A |
5730514 | Hashemi | Mar 1998 | A |
5733027 | Lautenschlager | Mar 1998 | A |
5757109 | Parvin | May 1998 | A |
5769518 | Grabher | Jun 1998 | A |
5775787 | Gasser | Jul 1998 | A |
5882100 | Rock | Mar 1999 | A |
5975662 | Weber | Nov 1999 | A |
5980007 | Singh | Nov 1999 | A |
5988780 | Rock et al. | Nov 1999 | A |
6015199 | Netzer et al. | Jan 2000 | A |
6027193 | Domenig et al. | Feb 2000 | A |
6244678 | Dopp et al. | Jun 2001 | B1 |
6254205 | Wright et al. | Jul 2001 | B1 |
6340078 | Scheible | Jan 2002 | B1 |
6390574 | Fraccaro | May 2002 | B2 |
6412891 | Liang et al. | Jul 2002 | B1 |
6629738 | Salice | Oct 2003 | B2 |
6672692 | Weng | Jan 2004 | B2 |
6712435 | Kim et al. | Mar 2004 | B2 |
6733097 | Kim et al. | May 2004 | B2 |
6953233 | Lam et al. | Oct 2005 | B2 |
20010006319 | Dopp et al. | Jul 2001 | A1 |
20020033658 | Salice | Mar 2002 | A1 |
20030067257 | Gasser | Apr 2003 | A1 |
20030132688 | Lackey et al. | Jul 2003 | A1 |
20030189395 | Doornbos et al. | Oct 2003 | A1 |
Number | Date | Country |
---|---|---|
4242717 | Jul 1993 | DE |
4301327 | Aug 1993 | DE |
0743032 | Nov 1996 | EP |
Number | Date | Country | |
---|---|---|---|
20070046158 A1 | Mar 2007 | US |