JPH0624548U - Rail device - Google Patents

Abstract

(57) [Abstract] [Purpose] With the stopper processed on the outer rail,
The intermediate rail can be attached to and detached from the same rail. [Structure] A notch 11 is provided in the upper protruding edge portion 6 of the outer rail 1, and a guide roller 13 also serving as a stopper member provided in the intermediate rail 2 can be inserted into and removed from the upper protruding edge portion 6 through the notch 11. By doing so, the intermediate rail 2 can be attached to and detached from the outer rail 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a so-called three-step pull rail device used as a suspension for furniture such as cabinets and desks.

[0002]

[Prior art]

 Conventionally, in a rail device, as a stopper structure between the inner and outer rails, one of the guide rollers provided on the inner rail (rear guide roller) is also used as a stopper member in order to reduce the number of parts and the number of assembly steps. Is common practice.

On the other hand, the stopper with which the combined guide roller abuts is attached to the outer rail by partially bending the outer rail or by attaching a separate stopper member made of synthetic resin or the like to the outer rail. It is provided.

[0004]

[Problems to be solved by the device]

 However, in a rail device having a three-step pulling structure composed of outer, middle, and inner rails, the use of the above structure as the stopper structure for the middle rail has the following problems.

In the case of adopting the method of partially bending the outer rail to form the stopper, the step of processing the stopper is performed after the intermediate rail is assembled into the outer rail. The paint comes off.

If another stopper member is attached to the outer rail after incorporating the intermediate rail, the number of parts and the number of assembling steps increase, resulting in an increase in cost.

In both of the methods, since the intermediate rail cannot be removed from the outer rail once the rail device has been assembled, the intermediate rail cannot be removed from the outer rail during installation into the furniture, that is, when the outer rail is attached (screwed) to the furniture body. The rails get in the way and the installation work becomes troublesome.

Therefore, the present invention employs a method of forming a stopper by partially bending the outer rail, and after processing the stopper, the rail device can freely attach and detach the intermediate rail to and from the rail. Is provided.

[0009]

[Means for Solving the Problems]

 According to the present invention, an outer rail is an intermediate rail, and an inner rail is slidably fitted to each of the intermediate rails. The intermediate rail has a guide roller that also serves as a stopper member for both the pulling out and pushing of the rail. Provided on the upper rear side, the outer rail is provided with a projecting edge portion for guiding the intermediate rail in a state where the position of the intermediate rail is regulated in the rail thickness direction, and a pullout stopper with which the combined guide roller abuts when the intermediate rail is pulled out. , In rail devices provided with push-in stoppers against which the above-mentioned dual-purpose guide roller abuts when the intermediate rail is pushed, the dual-purpose guide roller is attached to the upper protruding edge of the intermediate rail at the rail thickness. A notch is provided so that it can be taken in and out in the direction.

[0010]

[Action]

 According to the above configuration, the combined guide roller can be inserted into and removed from the upper projecting edge portion in the rail thickness direction. Therefore, with the lower part of the intermediate rail fitted in the lower projecting edge part of the outer rail, The middle rail can be freely attached to and detached from the outer rail by carrying out and putting in and out.

Therefore, it is not necessary to bend the stopper after assembling the outer rail and the intermediate rail. Therefore, there is no problem that the outer rail coating is peeled off by this bending process.

Further, since both rails can be disassembled at the time of assembling into furniture, the work of attaching the outer rail to the furniture main body becomes easy.

[0013]

【Example】

 An embodiment of the present invention will be described with reference to the drawings.

This rail device is constructed by slidably fitting an outer rail 1 to an intermediate rail 2 and an intermediate rail 2 to the inner rail 3, respectively. For example, when the rail apparatus is used for a desk, as shown in FIG. The outer rail 1 is attached to the desk body 4, and the inner rail 3 is attached to the drawer 5.

On the outer rail 1, upper and lower end portions are bent to have an L-shaped cross section, and projecting edge portions 6 and 7 including horizontal portions 6a and 7a and vertical portions 6b and 7b are formed.

Among them, the upper projecting edge portion 6 is bent to form a pull-out stopper 8 for the intermediate rail 2 at an intermediate portion in the rail length direction, a convex portion 9 for preventing the intermediate rail 2 from rising at a front end portion, and a rear portion. Push-in stoppers 10 for the intermediate rail 2 are formed downward at the end portions, respectively, and a notch 11 is provided in the vertical portion 6b at the intermediate portion.

On the other hand, the lower protrusion 7 is provided with a recess 12 in which an intermediate portion is curved downward.

The intermediate rail 2 has a rear guide roller 13 at the upper rear end, which also serves as a stopper member in both directions of pulling and pushing, and a front guide roller 14 at the lower front end, which also serves as a push stopper for the inner rail 3, around the horizontal axis. It is rotatably installed.

Further, in the middle part, the first and second pinch rollers 15 and 16 are rotatably attached to the lower part around the horizontal axis at a predetermined distance after the first and second pinch rollers 15 and 16 and slightly behind the first pinch roller 15. A presser roller 17 is provided on an obliquely upper portion so as to be rotatable around a horizontal axis.

As shown in FIGS. 2 and 3, the center holes 15a and 16a of the first and second pinch rollers 15 and 16 are formed to have a diameter larger than that of the horizontal shafts 18 and 19 which are rotation centers. As a result, it is supported so as to be vertically movable within a certain range.

The inner rail 3 has a guide edge portion 20 having an inverted L-shaped cross-section at the upper end portion and a mounting portion 21 for the drawer 5 at the lower end portion, and the guide edge portion 20 has both the pinch rollers 15, 16 and the front portion. It is supported by the guide roller 14 and is pressed downward by the pressing roller 17.

Further, the guide edge portion 20 has a rear end portion bent obliquely upward to form a drawer stopper 22 and a front end portion having a push-down stopper 23 protruding downward.

In order to reduce the thickness of the entire rail device as much as possible, a recessed portion 24 is provided over the entire length in the center portion of the intermediate rail 2 in the height direction, and as shown in FIG. The tip of the portion 20 is adapted to fit in the recess 24.

In FIG. 5, reference numerals 25 and 25 denote plastic sliders attached to the intermediate rail 2 for improving the sliding between the outer rail 1 and the intermediate rail 2. It is also provided on the 1st side.

Next, the operation of this rail device will be described.

A. Drawing-out state Figures 1 and 2 show the fully-drawing-out state. In this state, the inner rail 3 (drawer 5) is supported by the front guide roller 14 of the intermediate rail 2 at the middle portion and the rear end portion thereof is sandwiched between the first pinch roller 15 and the pressing roller 17. Supported.

In this case, the lower surface of the first pinch roller 15 is supported by the lower projecting edge portion 7 of the outer rail 1, and the first pinch roller 15 is pushed up relative to the intermediate rail 2 which is going to descend due to its own weight, so that the inner rail is pushed. 3 is in close contact with the guide edge portion 20. Therefore, the guide edge portion 20 is securely sandwiched between the first pinch roller 15 and the pressing roller 17.

At this time, the inner rail 3 is prevented from moving forward by the pull-out stopper 22 coming into contact with the pressing roller 17 from the rear side.

On the other hand, the intermediate rail 2 is supported by the outer rail 1 via the rear guide roller 13 and both pinch rollers 15 and 16, and is positioned in the rail thickness direction by these and the projecting edge portions 6 and 7 of the outer rail 1. Restricted (prevention of falling).

At this time, the rear guide roller 13 comes into contact with the pull-out stopper 8 of the outer rail 1 to prevent the forward movement.

B. Pushing Operation When the inner rail 3 is pushed in from the fully pulled out state, the first pinch roller 15 rotates due to friction with the guide edge portion 20 of the rail 3, whereby the intermediate rail 2 and the inner rail 3 move backward at the same time. Moving.

In this case, the weight of the intermediate and inner rails 2 and 3 and the weight of the drawer apply a downward load to the rails 2 and 3, and this load causes the rear guide roller of the intermediate rail 2 to move. 13 is in close contact with the upper edge 6 of the outer rail 1, and the first pinch roller 15 is in close contact with the lower edge 7.

As a result, the upward movement of the intermediate rail 2 is stopped, while the first pinch roller 15 is strongly pushed up, so there is no fear that the pinching force of the inner rail 3 will drop during pushing.

Note that the guide edge portion 20 rides on the second pinch roller 16 in the middle of this pushing stroke, and thereafter, the pinching action of the inner rail 3 is performed by both the pinch rollers 15, 16 and the pressing roller 17. Be seen.

C. Pushed state In this way, the inner rail 3 and the intermediate rail 2 are pushed in and the state shown in FIG. 3 is obtained.

At this time, in the intermediate rail 2, the rear guide roller 13 comes into contact with the pushing stopper 10 of the outer rail 1, and in the inner rail 3, the pushing stopper 23 comes into contact with the front guide roller 14. As a result, they are prevented from moving backward from the push-in position.

At the time of full pushing, as shown in the drawing, the first pinch roller 15 falls into the concave portion 12 and the intermediate and inner rails 2 and 3 as a whole sink, preventing forward movement due to rebound or vibration after pushing. It

On the other hand, when the first pinch roller 15 falls into the recess 12 in this manner, the force of the inner rail 3 to be caught by the roller 15 and the pressing roller 17 is reduced.

However, at this time, the pinching action of the inner rail 3 is held by the second pinch roller 16 and the pressing roller 17, so that when the pulling-out operation is performed next, the frictional resistance of this pinching portion is increased. As a result, the second pinch roller 16 rotates and the intermediate rail 2 simultaneously starts moving forward.

Immediately after that, the first pinch roller 15 comes out of the recess 12 and comes into close contact with the guide edge portion 20 again, and the pinching action is restarted. The second pinch roller 16 is disengaged from the guide edge portion 20 during the drawing stroke, and thereafter only the first pinch roller 15 continues the pinching action.

Due to the inner rail pinching action of the pinch rollers 15 and 16 and the pressing roller 17 as described above, the inner rail 3 and the intermediate rail 2 do not move in two-stage motion but always move and stop at the same time. That is, smooth and comfortable movement is obtained.

On the other hand, according to this rail device, the outer rail 1 and the intermediate rail 2 can be assembled and disassembled as follows.

That is, as shown in FIGS. 4 to 6, both pinch rollers 15 and 16 are fitted into the lower projecting edge portion 7, and the rear guide roller 13 of the intermediate rail 2 is made to face the notch 11 of the outer rail 1. In this state, the lower part of the intermediate rail 2 is used as a fulcrum, and when the assembling is operated from the tilted state to the vertical state and when disassembling, the reverse operation is performed. The rails 1 and 2 can be freely put in and taken out through the rails, so that the rails 1 and 2 can be freely assembled and disassembled.

Therefore, it is possible to process the pull-out and push-in stoppers 8 and 10 on the outer rail 1 and, after painting the whole, assemble the intermediate rail 2, so that the stoppers are formed after both rails are assembled. This eliminates the problem of paint peeling off due to the processing of the stopper, which occurs when the procedure described above is adopted.

Further, since both rails 1 and 2 can be freely disassembled even after once assembled, they are transported to the furniture factory in a state where the rail device is assembled, and the rails 1 and 2 are disassembled in the state where 1 can be attached to the furniture main body side and the intermediate rail 2 can be incorporated into the rail 1. Therefore, the intermediate rail 2 does not get in the way when the outer rail is attached to the furniture, and the attaching work is simplified.

In the above embodiment, the inner rail 3 is sandwiched between the vertically movable pinch rollers 15 and 16 and the pressing roller 17 in order to prevent a two-step motion at the time of drawing and pushing. However, when it is not necessary to prevent the two-step motion, the pressing roller 17 may be omitted and the pinch rollers 15 and 16 may be replaced with ordinary fixed rollers.

[0047]

[Effect of device]

 As described above, according to the present invention, the upper rail of the outer rail is provided with a notch, and the guide roller, which also serves as the stopper member of the intermediate rail, is freely inserted into and removed from the upper lip by the notch in the rail thickness direction. With this structure, the intermediate rail can be freely attached to and detached from the outer rail by inserting and removing the combined guide roller with the lower part of the intermediate rail fitted in the lower edge of the outer rail. it can.

Therefore, it is not necessary to perform the procedure of bending the stopper after the outer rail and the intermediate rail are assembled. Therefore, there is no problem that the outer rail coating is peeled off by this bending process.

Further, since both rails can be disassembled at the time of being incorporated in furniture, the work of attaching the outer rail to the furniture main body becomes easy.

[Submission date] August 7, 1992

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

According to the present invention, an intermediate rail is slidably fitted to the outer rail, and an inner rail is slidably fitted to the intermediate rail, and the intermediate rail has a rear guide roller which also serves as a stopper member for pulling out and pushing the rail in both directions. Provided on the upper side, the outer rail is provided with a projecting edge portion that guides the intermediate rail in a state where the position of the intermediate rail is regulated in the rail thickness direction, and a pullout stopper with which the dual-purpose guide roller abuts when the intermediate rail is pulled out. A rail device provided with a push-in stopper with which the dual-purpose guide roller comes into contact when the intermediate rail is pushed in, the dual-purpose guide roller is provided on the upper edge of the outer rail at the upper edge. It has a notch that allows it to be inserted and removed in the rail thickness direction.

[Brief description of drawings]

FIG. 1 is a perspective view of a rail device according to an embodiment of the present invention in a pulled-out state.

FIG. 2 is a partial cross-sectional side view of the same state.

FIG. 3 is a partial cross-sectional side view of the device in a pushed-in state.

FIG. 4 is a side view for explaining the assembling and disassembling action of the outer and middle rails in the same device.

5 is an enlarged sectional view taken along line VV of FIG.

6 is a cross-sectional view showing a process of removing the intermediate rail from the state of FIG.

[Explanation of symbols]

 1 Outer rail 2 Intermediate rail 3 Inner rail 13 Guide rail for shared use of intermediate rail 6 Upper protruding edge of outer rail 7 Same lower protruding edge 8 Outer rail intermediate rail withdrawal stopper 10 Same push stopper 11 Notch

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[Procedure amendment]

[Submission date] August 7, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

Claims (1)

[Scope of utility model registration request] 1. An outer rail is provided with an intermediate rail, and an intermediate rail is slidably fitted to the intermediate rail, and a guide roller which also serves as a stopper member for pulling in and pushing in the rail is provided on the upper rear side of the intermediate rail. The outer rail is provided with a projecting edge portion that guides the intermediate rail in a state in which the position of the intermediate rail is regulated in the rail thickness direction, and a drawer stopper with which the dual-purpose guide roller contacts when the intermediate rail is withdrawn,
In a rail device provided with push-in stoppers for contacting the dual-purpose guide roller when the intermediate rail is pushed, the dual-purpose guide roller is provided on the upper projecting edge portion of the intermediate rail in the rail thickness direction with respect to the projecting edge portion. A rail device, characterized in that it is provided with a notch that allows it to be taken in and out.