JP3418851B2 - Drawer support device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawer support device. 2. Description of the Related Art Suspension-type drawers for cabinets, desks, and the like can be smoothly inserted and removed by supporting the drawers on a box via a slide device. [0003] In the above-mentioned slide device, usually, a plurality of rails are fitted to each other with steel balls or rollers interposed therebetween. There is some play between the rails. [0004] Therefore, the drawer supported by the slide device can be lifted slightly within a range of play between the rails in a state of being housed in the box. For example, in a cabinet having a plurality of drawers, when a drawer at a lower position is to be drawn,
The user often pulls out the drawer with a slight lifting tendency, so that the drawer may come into contact with the drawer directly above the drawer, generating an unpleasant sound or damaging the drawer. In a cabinet with a lock, an elevating rod which is raised and lowered by a key operation of a cylinder lock is provided on the inner surface of the box, and a pin is protruded from one of the elevating rod and a side surface of the drawer. On the other hand, there is another type in which a locking piece is provided which is at the same height as the pin due to the vertical movement of the lifting / lowering rod, thereby preventing the pin from moving forward and backward. [0007] In such a cabinet with a lock, if the drawer is pulled forward while being lifted, the pin may get over the locking piece and the lock may be released, and there is a concern about safety. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and in a drawer such as a cabinet, when a drawer is closed, it is ensured that the drawer is lifted. By blocking,
It is an object of the present invention to provide a drawer support device that solves the above problems. [0009] According to the present invention, the above object is achieved by sandwiching a movable rail attached to the side surface of a drawer, a fixed rail facing the front and rear, fixed to the inner surface of a box, and an intermediate rail. In the suspension type drawer support device, which is slidably fitted to the outer surface of the movable rail, when the drawer is closed, it overlaps directly below the inward piece provided on the fixed rail to prevent the drawer from floating. The problem can be solved by providing a projection having a flat shape. When the drawer is housed in the box, the inward piece provided on the box blocks the projection above the drawer.
Even if the drawer is to be lifted, the inward piece and the projection are engaged, and the drawer is prevented from rising. [0011] EXAMPLES Hereinafter, the present invention, an embodiment applied to a cabinet with a lock with simultaneous drawer prevention function of a plurality of drawers, with reference to the accompanying drawings. FIG. 1 is a front view of a cabinet, in which a drawer (2) of three levels is accommodated in a box (1). FIGS. 2 and 3 show a drawer of a slide device (3) for putting a drawer (2) in and out of a box (1).
The right side of (2) is shown. The slide device (3) comprises a fixed rail (4), an intermediate rail (5) and a movable rail (6). The fixed rail (4) has a base piece (4
Inwardly facing pieces (4b) and (4c) are connected to the upper and lower edges of a), respectively. A pair of upper and lower downwardly L-shaped locking pieces (4d) (4d) cut and raised outward from a proper position of the base piece (4a) of the fixed rail (4) are attached to the box (1). ), The fixed rail (4) can be fixed to the side plate (7) by engaging with the lower edge of the engaging hole (8) (8) formed in the inner plate (7a) of the side plate (7) having the double wall structure. 7) is horizontally fixed to the inner surface in the front-rear direction. The intermediate rail (5) has a base piece (5
Inwardly facing pieces (5b) and (5c) are connected to the upper and lower edges of a), respectively, and have a U-shaped cross section. The upper and lower inwardly facing pieces (5b) and (5c) and the upper part of The steel balls (9) are interposed between the inward pieces (4b) and (4c), and are fitted into the fixed rails (4). The movable rail (6) has a base piece (6
Outer pieces (6b) (6c) are connected to the upper and lower edges of a) to form an outward U-shaped cross section.The upper and lower outer pieces (6b) (6c) and the intermediate rail
A steel ball (1) is placed between the upper and lower inward pieces (5b) and (5c) of (5).
0) is interposed in the intermediate rail (5). At the front and rear ends of the base piece (6a) of the movable rail (6), L-shaped engaging pieces (6d) are cut and raised inward. This locking piece (6d) is attached to the side plate (2a) of the drawer (2).
By fitting into an engaging hole (12) formed in a lower part of an outwardly-U-shaped bulging portion (11a) formed at a key point of the holding plate (11) fixed to the drawer (2), the drawer (2) It is supported by a movable rail (6). When the drawer (12) is closed on the front end of the holding plate (11), the drawer (2) overlaps directly below the front end of the inward piece (4b) above the fixed rail (4). An outward projection (11b) is provided so as to prevent the floating of the upper surface. Next, referring to FIGS. 4 to 7, drawer (2)
Will be described. Pins (20) are protrudingly provided on the outer surfaces (only the right one is shown) of both side plates (2a) of each drawer (2). On the inner surface of the inner plate (7a) of the side plate (7) of the box (1), a slightly long vertically extending groove (21) is formed. An elevating rod (22) slightly shorter than the height of the box (1) is fitted thereinto so as to be able to move up and down. (23)
A pair of upper and lower support plates for preventing the lifting rod (22) from dropping out of the concave groove (21), and is fixed to the side plate (7) so as to straddle the concave groove (21). A known catch (24) is provided between the lower end of the lifting rod (22) and the lower support plate (23). The catch (24) is fixed to a lower surface of a lower support plate (23) and a diamond-shaped projection (25) projecting from the inner surface of the lower end portion of the lifting rod (22). ) Is raised to the position shown in FIG. 5, a pair of elastic gripping pieces (26) made of a leaf spring material which grips the projection (25) and holds the lifting rod (22) at that position. It consists of The board (28) of the locking means (27) is fixed to a position of the right elevating rod (22) which is almost at the same height as each pin (20). A downwardly convex push-up projection (29) is provided on the upper surface of the inner surface of the substrate (28), and an upwardly convex push-down protrusion (30) is similarly provided at the lower part of the inner surface. Between () and (30), an inclined groove (31) facing forward and downward is formed, through which the pin (20) can be inserted back and forth. The rear end surface of the pressing projection (30) forms a vertical stopper surface (30a). At the position corresponding to each drawer (2) on the inner surface of the left elevating rod (22), the same pressing protrusion (3
Only 0) is fixed. As shown in FIG. 7, an engagement hole (32) is provided at the upper end of each of the lifting rods (22), and a box body is provided in each of the engagement holes (32).
A hanging support piece (33a) extending in the left-right direction from the front end of the locking bar (33) disposed on the upper part of (1) is fitted so as to be able to freely move up and down slightly. A horizontally long hole (34) is formed in the center of the front end face of the locking bar (33), and a pair of left and right horizontally long holes (35) (right (Not shown). A hook (3) connected to the rising portion of an L-shaped support piece (36) forming a part of the upper frame of the box (1) is inserted into the horizontally long hole (35).
7) is disengageably engaged from below, and the locking bar (33)
The front end can be slightly rotated up and down around the engagement portion with the hook (37). An operating pin (39) projecting from the rear eccentric position of the cylinder lock (38) fitted to the upper frame is engaged with the horizontally long hole (34) at the front center. In the above-described apparatus, as shown in FIG.
When all the drawers (2) are pushed in and the cylinder lock (38) is unlocked, both lifting and lowering rods (22) are located at the lower limit by their own weight, at which time the inclination of each locking means (27) The rear end of the groove (31) is located immediately before the pin (20) of each drawer (2). Therefore, each drawer (2) can be pulled out freely and catch
The elastic holding piece (26) and the projection (25) of (24) are vertically separated. As shown in FIG. 5, for example, a middle drawer
Pull out (2) and the right pin (20) will be
When passing through the inclined groove (31) of (27), the push-up protrusion (29) is pushed up to raise the entire locking means (27) together with the right elevating rod (22), and the protruding protrusion ( 25) fits into the elastic gripping piece (26) and engages elastically. Therefore, even after passing through the pin (20), the right elevating rod (22) does not descend, and the other pins (20) are pushed down by the pressing projections (29).
The upper and lower drawers (2) located immediately below the lower part of the stopper (29a) cannot be pulled out because their pins (20) are blocked by the pressing projections (29) at the front. At this time, the movement of the left pin (20) is not hindered while the left elevating rod (22) remains at the lower limit. In the above-mentioned state, when the middle drawer (2) is pushed in, the right pin (20) passes through the inclined groove (31) of the middle locking means (27) from the front. Since the push projection (30) is pushed down, the elevating rod (22) also descends and catches (2).
The projection (25) of (4) is forcibly detached from the elastic gripping piece (26), and the right elevating rod (22) is further lowered slightly by its own weight to be in the state shown in FIG. The drawer (2) can be pulled out. In the state shown in FIG. 4, the cylinder lock (38)
When the locking operation is performed, the operating pin (39) that rotates eccentrically rotates the front portion of the locking bar (33) upward, and the hanging support piece (33).
As shown in FIG. 6, both lifting rods (22) suspended from a) are slightly raised together with the locking means (27), and the upper part of the stopper (30a) of the pressing projection (30) is Since the front of each pin (20) is blocked, all drawers (2) are locked so that they cannot be pulled out. At this time, since the two lifting rods (22) do not rise as much as the above-described simultaneous pull-out prevention time, the catch (24) does not engage. Therefore, if the cylinder lock (38) is unlocked,
Since both lifting rods (22) are lowered by their own weight to the state shown in FIG. 4 and unlocked, the locking and unlocking operation is light. In a cabinet provided with such a simultaneous drawer prevention mechanism and a lock mechanism, an appropriate space is provided between the upper and lower sides of each drawer (2), and furthermore, a slide device is provided.
There is some play between the rails (4), (6) and (8) in (3), so conventionally, the drawer (2) is lifted,
By moving the pin (20) above the stopper surface (33a) of the pressing projection (30), the drawer (2) could be pulled out. However, in this embodiment, when the drawer (2) is to be lifted upward, as described above,
The protrusion (11b) of (11) is positioned at the inward piece (4) above the fixed rail (4).
Since the drawer (2) comes into contact with the lower surface of (b) to prevent the drawer (2) from floating, the pin (20) does not move above the stopper surface (30a), and the drawer (2) is not pulled out. . The user may, for example, draw the lowermost drawer (2).
When pulling out the drawer (2), even if the drawer (2) is lifted upward and pulled out toward the user, the drawer (2) does not rise, so this drawer (2) and the drawer (2) immediately above it
There is no danger of contacting, making unpleasant sounds or damaging both. Further, the drawer (2) is engaged with the movable rail (6) by engaging the engaging hole (12) of the holding plate (11) with the upward locking piece (6d) of the movable rail (6). When the drawer (2) is lifted, the engagement between the engaging hole (12) and the locking piece (6d) may be disengaged because the drawer (2) is lifted. When 2) is housed in the box (1), there is no such fear because the projection (11b) is overlapped with the inward piece (4b) of the fixed rail (4). In the above embodiment, the right elevating rod (2
Only 2) is provided with a locking means (27) having a simultaneous pull-out prevention function and a locking / unlocking function, and the left elevating rod (22) is provided with a pressing projection (30) having only a locking function. The locking means (27) is also provided on the left lifting rod (22), and the left lifting rod (22)
A catch (24) may also be provided between the drawer (2) and the left side plate (2a) so that each drawer (2) can exhibit a simultaneous drawer preventing function. Conversely, the left elevating rod (22) may be omitted, and only the right elevating rod (22) can exhibit the simultaneous pull-out preventing function and the locking function. Further, a pin (20) is protruded from the elevating rod (22),
The locking means (27) may be provided on the drawer (2) side. In this case, in order to obtain the same operation mode as that of the above-mentioned embodiment, the locking means (27) may be attached to the side surface of the drawer (2) with the above-mentioned upside down direction. In the above embodiment, the projection (11b) is provided on the holding plate (11). However, a similar projection may be provided integrally with the movable rail (6). In this way, the slide device
The drawer lifting prevention mechanism can be incorporated only in (3), and can be easily applied to any drawer without performing any processing on the drawer (2) side. According to the present invention, the following effects can be obtained. (a) Even if the user lifts the drawer and tries to pull it out, the drawer does not rise, so that this drawer comes into contact with, for example, the drawer immediately above, and emits unpleasant sounds, Don't hurt
No. (B) Also, since the projection is provided on a part of the movable rail (or a member for attaching the movable rail to the drawer) ,
The drawer itself does not need to be subjected to any special processing, and includes a slide device to which the present invention is applied, that is, a fixed rail, an intermediate rail, and a movable rail, and a holding plate that is a member for attaching the movable rail to the drawer as necessary. The present invention can be easily applied simply by attaching the slide device to the side surface of the drawer as in the related art. (C) Further, when the protrusion is provided on a member for attaching the movable rail to the drawer, and the member is inserted from above into a locking piece provided on the movable rail to be supported, the member is movable with the member. It can also prevent the rail from coming off.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a cabinet provided with one embodiment of the present invention. FIG. 2 is a partially cutaway enlarged perspective view of a main part of the same. FIG. 3 is an enlarged vertical sectional front view of a main part of the same. FIG. 4 is a schematic vertical sectional side view when the cabinet is unlocked. 5 is a schematic vertical sectional side view when the middle drawer is pulled out from the state of FIG. 4; FIG. 6 is a schematic vertical sectional side view when the cabinet is locked. FIG. 7 is a partially cutaway perspective view of the lock portion. [Description of Signs] (1) Box (2) Drawer (2a) Side plate (3) Sliding device (4) Fixed rail (4a) Base piece (4b) (4c) Inward piece (4d) Lock piece (5) Intermediate rail (5a) (5b) Inward piece (5c) Lower piece (6) Movable rail (6a) Base piece (6b) (6c) Outward piece (6d) Locking piece (7) Side plate (7a) Inner plate (8 ) Engagement holes (9) (10) Steel balls (11) Holding plate (11a) Swelling part (11b) Outward projection (12) Engagement hole (20) Pin (21) Depressed groove (22) Lifting rod (23 ) Support plate (24) Catch (25) Lever (26) Elastic gripping piece (27) Locking means (28) Substrate (29) Push-up protrusion (30) Push-down protrusion (30a) Stopper surface (31) Inclined groove (32 ) engaging hole (33) locking bar (33a) hanging support piece (34) (35) Horizontal holes (36) support piece (37) hook (38) a cylinder lock (39) actuated pin

Claims (1)

(57) [Claims] [Claim 1] A movable rail attached to the side of the drawer is slidably fitted to a fixed rail facing the front and rear direction fixed to the inner surface of the box body, with the intermediate rail interposed therebetween. In the suspension type drawer support device, a protrusion is provided on the outer surface of the movable rail so as to overlap with the inward piece provided on the fixed rail when the drawer is closed so as to prevent the drawer from floating. A drawer support device.