JPH0230990Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an improvement in a guide device for a drawer of a desk, chest of drawers, etc. or a shelf board etc. that can be taken in and out in a pull-out manner.

(Prior Art) Conventionally, as a guide device used for desk drawers, etc., a plurality of balls held in a retainer are rolled between the respective projecting edges of an outer rail and an inner rail, which have projecting edges on both the upper and lower sides. It is known to have a movable interposition. This type of guide device has extremely low frictional resistance when sliding compared to other guide devices that use rollers, etc.
It is characterized by the ability to easily open and close drawers, etc. However, because the above-mentioned frictional resistance is small, there is a risk that the drawers, etc. may bounce due to the reaction when closing them, or that the drawers, etc. may start to open or close automatically when the desk is tilted. It was equipped with a complex locking mechanism.
Further, since the opening/closing operation of the drawer etc. is easy, there is a problem in that it is difficult to intuitively determine the closing end point and the opening end point.

(Purpose of the invention) The present invention was made to solve the above-mentioned problems, and it is possible to easily confirm that the drawer has reached the end position when opening and closing the drawer, etc. A guide device for drawers, etc., with a simple structure that applies a predetermined resistance at this end position to stably hold the drawer, etc. in the open or closed position, thereby preventing the drawer, etc. from bouncing back or opening/closing automatically. It provides:

(Structure of the invention) The guide device for a drawer or the like according to the invention includes an outer rail and an inner rail that have projecting edges on both the upper and lower sides, and is arranged within the outer rail so that it can slide within a certain regulated range. A plurality of balls rotatably held on both upper and lower sides of the retainer are rotatably interposed between the projecting edges of both rails, so that the inner rail can be moved in the longitudinal direction of the outer rail. In a guide device such as a drawer, which is held by a retainer so as to move forward and backward, at least one of the protruding edges of the rails is in contact with the peripheral surface of the ball to restrain the retainer in an open position and a closed position of the drawer, etc. The protrusion is formed by protruding the protruding edge by an amount that allows the ball to ride over it.

(Example) In FIG. 1, 1 is an outer rail, 2 is an inner rail, 3 is a retainer, and 4 is a ball. The outer rail 1 and the inner rail 2 have a U-shaped cross section and include substrates 10 and 20 and a pair of protruding edges 11 and 21 connected to each other on both upper and lower sides thereof. The inner surface of the protruding edge 11 of the outer rail 1 and the outer surface of the protruding edge 21 of the inner rail 2 are formed in an arc shape or a V-shape, thereby forming a guide for holding the ball 4 in a rollable manner. Grooves 12 and 22 are formed.
Further, the base plate 10 of the outer rail 1 is formed with a mounting hole 13 for a drawer (not shown), and the base plate 20 of the inner rail 2 is formed with a mounting hole 23 for a desk body (not shown).

The retainer 3 has a base plate 30 and a pair of ball holding parts 31 connected to each other on both upper and lower sides thereof,
Guide grooves 32 into which the projecting edge portions 21 of the inner rail 2 are fitted are formed at the base end portions of the upper and lower ball holding portions 31, respectively. A plurality of balls 4 are rotatably held in each of the ball holding parts 31, and the balls 4 are rotatably interposed between the guide grooves 12 and 22 of both the rails 1 and 2, so that the retainer 3 is slidably disposed within the outer rail 1, and the retainer 3 and the inner rail 2 are slidably engaged.

A protruding piece 14 is cut and raised at the front end of the base plate 10 of the outer rail 1 (the end on the side in the pushing direction of a drawer, etc.) so as to come into contact with the front end surface of the retainer 3, and a predetermined rear part of the protruding edge 11 is provided. At this position, a protrusion 15 having a protrusion amount such that the ball 4 cannot overcome is provided in the guide groove 12 by means such as press working using a mold, and the protrusion piece 14 and the protrusion 15 are Therefore, the slide range of the retainer 3 with respect to the outer rail 1 is restricted to a constant value. Further, the lower protruding edge portion 11 is provided with a protruding piece 14 serving as a regulating portion for regulating the movement range of the retainer 3, and a protruding piece 15 that contacts the circumferential surface of the ball 4 at a predetermined position near the inner side of the protruding portion 15. Retainer restraining protrusions 16 and 17, which exert a restraining force and have a protruding amount sufficient for the balls 4 to overcome, are protruded into the guide groove 12 by means such as press working using a mold. There is. That is,
These protrusions 16 and 17 have a smaller protrusion amount than the protrusion 15 for regulating the movement range of the retainer 3, and when a predetermined pressing force is applied in the direction of sliding the retainer 3, the retainer 3 etc. are elastically deformed. ball 4
is formed so that it can climb over these protrusions 16 and 17.

Further, a stopper 3 having a tongue piece 33 and a stepped portion 34 is provided at the rear end of the base plate 30 of the retainer 3.
5 is provided protrudingly. This stopper 35 is configured to be elastically deformable in the thickness direction of the retainer 3 by forming cutouts 36, 36 on both upper and lower sides thereof. A protrusion 24 corresponding to the step 34 of the stopper 35 is cut and raised at the rear end of the base plate 20 of the inner rail 2 (the end on the pullout direction side of the drawer, etc.), and when the drawer or the like is opened, The projecting piece 24 is configured to come into contact with the step portion 34 to restrict the sliding range of the retainer 3 with respect to the inner rail 2.

In the above configuration, after the retainer 3 is installed between the upper and lower guide grooves 12 of the outer rail 1, by inserting the protrusion 22 of the inner rail 2 into the guide groove 32 of the retainer 3, the outer rail 1 and the inner rail 2 are relatively slidably connected via the ball 4 to assemble the guide device. After or before assembling the guide device in this way, the outer rail 1 is attached to a drawer etc. using the attachment holes 13 with screws, etc., and the inner rail 2 is attached to the desk body etc. using the attachment holes 2.
By installing with screws etc. using 3,
As shown in FIG. 2, the desk main body A and the drawer B are connected via this guide device.

When the drawer B is pulled out in the above assembled state, the outer rail 1 moves rearward while the balls 4 roll, and as shown in FIG. It comes into contact with the circumferential surface of the ball 4a located at the forefront. In this state, when the drawer B is further pulled backward (in the direction of the arrow), the balls 4a ride over the protrusion 16, and the protrusion 14 at the front end of the outer rail 1 comes into contact with the front end surface of the retainer 3. The stepped portion 34 of the stopper 35 provided at the end abuts and locks against the protruding piece 24 at the rear end of the inner rail 2, thereby preventing further movement of the outer rail 1 and pulling out the drawer B as shown in FIG. Reach the open position shown in . In this case, the balls 4a are connected to the protrusions 16 for retaining the retainer.
Since the retainer 3 and the outer rail 1 are locked in a state where the drawer B is crossed over, the drawer B is stably held in the open state.

By providing the small protrusion 16 in contact with the circumferential surface of the ball 4 on the protrusion 11 of the outer rail 1, the retainer 3 can be restrained. There is no need to provide a complicated mechanism such as attaching a locking protrusion to the other rail and engaging this locking protrusion with a locking hole provided on the other rail. Can be held in open position.

In addition, due to the feeling when the ball 4a climbs over the protrusion 16 during the opening operation of the drawer B, the drawer B
Since it can be confirmed that the outer rail 1 and the drawer B have reached the opening end point, it is possible to prevent the outer rail 1 and the drawer B from falling out of the desk body A by pulling the drawer B more than necessary.

In addition, when pulling out the drawer B from the desk main body A as necessary, by pressing the tongue piece 33 of the stopper 35 toward the base plate 10 side of the outer rail 1, the step part 34 and the protruding piece 14 of the inner rail 2 are removed. In this state, the drawer B is further pulled rearward to release the outer rail 1 and the retainer 3 from the inner rail 2. In addition, in order to attach the drawn out drawer B to the desk body A, push the drawer B in such a state that the guide groove 32 of the retainer 3 held on the outer rail 1 faces the protruding edge 11 of the inner rail 2. By this, the outer rail 1 and retainer 3 are connected to the inner rail 2.

Furthermore, when the drawer B is pushed into the desk body A, the outer rail 1 moves forward while the balls 4 roll, and the protrusion 17 provided at the rear of the outer rail 1 is positioned at the rearmost part of the retainer 3. It comes into contact with the circumferential surface of the ball 4b. In this state, when the drawer B is further pushed in, the balls 4b climb over the protrusion 17 and engage the protrusion 16 and the protrusion 15 for regulating the movement range of the retainer 3.
Outer rail 1
Further movement of the drawer B is prevented and the drawer B reaches the closed position shown in FIG. Even during this closing operation, it can be confirmed that the drawer B has reached the opening end point by the feeling when the ball 4b climbs over the protrusion 17. In addition, when the drawer B is in the closed state, the balls 4b are restrained between the protrusions 16 and 17, and the retainer 3 and the outer rail 1 are locked. can prevent the natural release of

Further, in the above embodiment, the movement range of the retainer 3 is restricted by the protrusion 14 on the front end of the outer rail 1 and the protrusion 15 provided at a predetermined position on the protrusion 11, and thereby both rails Since the structure is such that the relative slide strokes of 1 and 2, that is, the amount of drawer B is regulated, the amount of drawer B is adjusted by appropriately changing the position of this protrusion 15. be able to. Therefore, a guide device with a common rail length can be applied to desks of various standards, improving productivity, and
This has the advantage of being convenient in storing and transporting the manufactured guide device.

Note that the locking portions that restrict the movement range of the retainer 3 with respect to the outer rail 1 are not limited to the protrusions 14 and the protrusions 15 shown in the above embodiment, and can be modified in various ways.
In place of the protruding piece 14 on the front end of 0, a protrusion similar to the protrusion 15 described above may be provided on the front end of the protrusion 11,
Furthermore, if the maximum pushing position of the drawer B can be regulated between the drawer B and the desk main body A, the protrusion 15
can be omitted.

In the above embodiment, the protrusions 16 and 17 for retaining the retainer are provided on the lower protrusion 11 of the outer rail 1, but the protrusions 16 and 17 are provided at corresponding positions on the upper and lower protrusion 11, respectively. Alternatively, the inner rail 2 may be used instead of the protrusions 16 and 17.
The projecting edge portion 21 is provided with a retainer restraining protrusion that abuts against the circumferential surface of the ball 4 to exert a predetermined restraint force and has a protrusion amount sufficient for the ball 4 to overcome. You can also do it.

In addition, in the above embodiment, in order to reliably prevent drawer B from being pulled out more than necessary due to inertia force when opening drawer B, retainer 3
A projecting piece 14 at the front end of the outer rail 1 is attached to the rear end.
A stopper 35 is provided with a stepped portion 34 corresponding to the stopper 35, but the stopper 35 is provided with a step 34 corresponding to the stopper 35, which is caused by friction acting between the balls 4 of the retainer 3 locked to the outer rail 1 and the inner rail 2 when the drawer B is in the open state. It is also possible to adopt a structure in which the stopper 35 is omitted, so as to prevent the drawer B from falling out. In addition, the outer rail 1 can be attached to the desk body A and used as a fixed rail, and the inner rail 2 can be used as a fixed rail.
It is also possible to attach it to drawer B and use it as a movable rail.

(Effects of the invention) As explained above, according to the invention, drawers, etc. open and close depending on the response when the balls of the retainer go over the retainer restraining protrusion provided on the protruding edge of the outer rail or inner rail. You can confirm that the end point of the operation has been reached, and with a simple configuration, you can prevent the drawer from being pulled out too much during the opening operation.
It is possible to prevent the occurrence of a situation where the amount of pushing is insufficient during the closing operation and the device is left in an incompletely closed state. Furthermore, the retainer is locked by the resistance acting between the retainer restraining protrusion and the balls that have climbed over the protrusion, thereby preventing relative movement between the outer rail and the inner rail. It is possible to lock a drawer, etc. in a predetermined position with a simple structure without attaching a separately formed locking member, etc., and the natural opening and closing of the drawer due to bounce when pushing the drawer, etc. or tilting of the desk etc. It has the advantage of being able to prevent

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the guide device according to the present invention, FIG. 2 is a sectional view showing the assembled state of the device, FIG. 3 is a partially cutaway front view thereof, and FIGS. 4 and 5. FIG. 2 is a schematic explanatory diagram showing the operation of the above device. 1... Outer rail, 2... Inner rail, 3... Retainer, 4... Ball, 11, 21
... Projection, 16, 17 ... Projection.

Claims (1)

[Scope of utility model registration request] It is equipped with an outer rail and an inner rail that have projecting edges on both the upper and lower sides, and a retainer that is disposed within the outer rail so that it can slide within a certain regulated range, and is rotatable on both the upper and lower sides of this retainer. In the guide device for a drawer or the like, in which the inner rail is held movably forward and backward in the longitudinal direction of the outer rail by interposing a plurality of balls held by the rails in a rollable manner between the projecting edges of the rails, At least one of the protruding edges of both rails has a protrusion that abuts the circumferential surface of the ball and restrains the retainer in an open position such as a drawer and a closed position. A guide device for a drawer, etc., characterized in that it is formed by bulging its edges.