JPH0517952Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention has the advantage that when a drawer, equipment, etc. are pulled out, the drawer, equipment, etc. will stop in the fully pulled out state and will not move back inadvertently. This relates to a stopper device for a rail such as a drawer that can be removed by simply pulling it forward when it is necessary to take out equipment.

<Prior Art and Problems> The above-mentioned conventional device has a fixed outer rail with a substantially C-shaped cross section, an inner fixed rail with a substantially C-shaped cross section that is slidable on the fixed outer rail, and a fixed inner rail with a substantially C-shaped cross section. A second drawer rail having a cross section substantially the same as that of the first drawer rail is provided on the outer surface of the fixed side inner rail of the first drawer rail, which is made of a ball holding strip that rotatably holds a ball between the upper and lower bent edges of the rail. In a rail such as a drawer configured by fixing a movable outer rail, when the fixed inner rail protrudes from the inner surface of the middle part of the fixed outer rail, the rear surface of the stopper at the rear end of the inner rail,
An intermediate stopper that elastically abuts on the inner surface of the moving side outer rail of the second drawer rail, and an intermediate stopper release member that elastically deforms the intermediate stopper,
A release member operating protrusion for elastically deforming the intermediate stopper release member is provided at the rear of the inner rail on the moving side, and is elastically engaged with the front stopper of the inner rail provided in front of the outer rail on the moving side, on the inner surface of the intermediate portion of the inner rail on the moving side. Each had a matching stopper at the front end of the drawer rail. (For example, Jikko Sho 62-22206
No.) For this reason, the inner rail on the moving side is in the most protruding state,
That is, the front end of the intermediate stopper contacts the rear surface of the inner rail rear end stopper of the fixed inner rail,
When the rear end stopper of the inner rail on the moving side is engaged with the front stopper of the inner rail provided on the outer rail on the moving side, if a rearward force is unexpectedly applied, the intermediate stopper deforms into a dogleg shape. Something happened,
This was causing the malfunction.

In addition, since the intermediate stopper release member moves while being elastically deformed in the direction of the fixed outer rail, its tip may come into contact with the screw head of the fixing screw installed in the mounting hole of the fixed outer rail. In order to prevent this, it is necessary to provide a counterbore in the mounting hole, or a high degree of manufacturing precision is required, which is not only expensive, but also because the intermediate stopper and the ball holding strip are always in contact with each other. The drawback was that smooth sliding could not be achieved.

[Purpose and structure of the present invention] The present invention provides a stopper device for rails such as drawers that has a simple structure, can be manufactured at low cost, has excellent strength, is free from failure, and provides smooth sliding. The purpose is to

The main part of the structure is that the sliding of the moving inner rail rotates the rotation lock piece attached to the moving outer rail, and the inner rail stopper formed on the fixed outer rail is rotated. In a rail stopper device such as a drawer that engages and disengages a rotating lock piece, the ball retaining strip plate of the fixed outer rail is one half of the moving distance of the fixed inner rail from the length of the fixed outer rail. A stopper protrusion is formed in the longitudinal center portion corresponding to the intermediate stopper formed at the rear of the stationary inner rail.

A slightly tapered inclined portion is formed at the rear end of the moving inner rail, and the rotating lock piece includes a locking protrusion that locks on the inner rail stopper;
It has a lock release guide protrusion that is pushed up by the rear end of the moving side inner rail, and the lock release guide protrusion has an inclined guide surface that makes surface contact with the inner surface of the inclined part of the moving side inner rail in the lock release position. It is being formed.

"Example" Examples will be described below based on the drawings.

In FIG. 1, reference numeral 1 indicates a fixed outer rail, 2 indicates a ball holding strip, 3 indicates a fixed inner rail, and 4 has a rotatable lock on the inner surface of the rear end. The outer rail on the moving side is attached with the piece 7, the reference numeral 5 indicates the ball holding strip on the moving side, and the reference numeral 6 indicates the inner rail on the moving side.

The fixed side outer rail 1 has upper and lower bent edges 11, 11 having ball guide grooves in the longitudinal direction of the inner surface formed by curving the upper and lower ends of a band-shaped metal plate into an inward arc shape or a V-shape, and a base plate 12. It is formed into a substantially C-shaped cross section.

Front and rear stoppers 1 protrude inward from the front and rear ends of the board 12 to restrict the range of movement of the ball holding strip 2 and the fixed inner rail 3 in the front and rear directions.
3 and 14 are formed.

Reference numeral 15 designates an inner rail stopper formed at an intermediate portion of the fixed outer rail 1 in the front-rear direction by making the base plate 12 protrude toward the fixed inner rail 3 side.

Reference numerals 16 indicate attachment holes for attaching the fixed side outer rail 1 to a device body or the like.

The fixed-side inner rail 3 is formed of a band-shaped metal plate to a size that can be inserted into the fixed-side outer rail 1, and is about half the length of the fixed-side rail 1, with the upper and lower ends facing outward in a circle. The upper and lower bending edges 31, 31 have a ball guide groove in the longitudinal direction of the outer surface which is curved in an arc shape or a V shape, and the cross section is approximately C from the substrate 32.
It is formed into a letter shape.

Reference numeral 33 indicates a front stopper in which the front end of the board 32 projects toward the fixed outer rail 1 side, reference numeral 34 indicates an intermediate stopper in which the rear end of the board 32 projects toward the ball holding strip 2 side, and reference numeral 35 indicates a front stopper in which the front end of the board 32 projects toward the fixed outer rail 1 side; A rear stopper is shown in which the upper and lower ends of the rear end of the board 32 are bent toward the fixed outer rail 1 side, the reference numeral 36 indicates an insertion hole for a locking protrusion 71 to be described later, and the reference numeral 37 indicates a rotation locking piece 7 to be described later. The mounting holes are shown.

The ball holding strip plate 2 is a band-shaped metal plate with a size that can be inserted between the fixed outer rail 1 and the fixed inner rail 3, and is designed to prevent movement of the fixed inner rail 3 from the length of the fixed outer rail 1. The dimension is obtained by subtracting one half of the length of the distance, and consists of a board 21 and upper and lower bent pieces 22, 22, the board 21 is bent at the center into a substantially U-shape to protrude inward, and is bent at both the upper and lower sides. Balls 23 are rotatably held at several locations in the longitudinal direction of the pieces 22, 22, respectively, with balls 23 projecting upward and downward.

Reference numeral 24 indicates a stopper protrusion formed in the longitudinal center portion of the board 21 to correspond to the intermediate stopper 34 of the fixed inner rail 3 and protrudes toward the fixed inner rail 3. Reference numeral 25 indicates a stopper protrusion formed in the longitudinal center of the board 21 to correspond to the intermediate stopper 34 of the fixed inner rail 3. The notch for insertion of the locking protrusion 71 formed correspondingly is shown.

The movable outer rail 4 has approximately the same length and shape as the fixed outer rail 1, and has upper and lower bending edges 41, 41 and a substrate 42.
It is composed of

A moving side inner rail 6 is attached to the rear end of the board 42.
A rear stopper 43 is formed to restrict rearward movement of the movable side inner rail 6 that protrudes to the side, and the board 4
A front stopper 44 is formed at the front end of 2. The front stopper 44 has a protruding inner surface central portion.

The fixed inner rail 3 is fixed to the outer surface of the rear half of the board 42.

Reference numerals 45 and 46 indicate front and rear end stoppers that restrict the range of movement in the front and rear direction of the ball holding strip 5, which has the front and rear ends of the base plate 42 slightly protruding inward, and 47 indicates the upper and lower balls 48, 48 and is attached to the inner surface of the front end of the moving side outer rail 4, and serves as a guide when the moving side inner rail 6 is attached to the moving side outer rail 4, and when the moving side inner rail 6 is stored, it is attached to the moving side inner rail 4. 6 shows a guide support member that supports the front end of 6.

Reference numeral 49 indicates an elastic holding member for holding the ball holding strip 5, which has been moved to the front part of the moving side outer rail 4, in that position when the moving side inner rail 6 is pulled out. There is.

Reference numeral 50 indicates a rotation range regulating hole of the locking protrusion 71 formed to correspond to the insertion hole 36;
shows a pivot connection hole that corresponds to the mounting hole 37 of the rotating lock piece 7.

The movable inner rail 6 is similar to the fixed inner rail 3,
The upper and lower bending edges 61, 61 and the substrate 62 have a substantially C-shaped cross section and are formed to have approximately the same length as the moving side outer rail 4,
A slightly tapered inclined part 65 is formed at the rear end, and a plate spring material is bent forward into a V-shape at the longitudinally intermediate part of the board 62, and a stopper hole 81 is formed at the front end. An elastic stopper 8 with a pull-out operation part 82 is attached to the front.

Reference numeral 63 indicates an escape hole for the extraction operation portion 82, and reference numeral 64 indicates an attachment hole for a drawer or the like.

The ball holding strip plate 5 on the movable side has the same shape as the ball holding strip plate 2 on the fixed side, is slightly shorter, and consists of a base plate 51 and upper and lower bent pieces 52, 52.
2, 52 rotatably hold balls 53.

The rotation lock piece 7 is rotatably fixed to the rear end of the moving side outer rail 4 with a front end having a connecting pin 700, a pivot connecting hole 70, and a mounting hole 37, and has a rotation range regulating hole. 50, a locking protrusion 71 that passes through the insertion hole 36 and faces the inner surface of the base plate 12 of the fixed outer rail 1;
A lock release guide protrusion 72 is formed below the locking protrusion 71, protruding toward the moving inner rail 6, and gradually approaching the lower bent edge 41 of the moving outer rail 4 toward the rear. ing.

The lock release guide protrusion 72 is formed with a lock guide surface 73 that makes surface contact with the inner surface of the inclined portion 65 of the moving inner rail 6 in the lock release position.

The rotation lock piece 7 is attached to the fixed side inner rail 3.
It is attached to the inner surface of the rear end, and the upper end has a locking protrusion 71.
A spring material 39 located on the upper surface and held by a spring holding protrusion 38 whose lower end is formed on the inner rail 3 ensures that the locking protrusion 71 is always engaged with the inner rail stopper 15.
Rotating force is applied in the direction of locking.

The present invention is constructed as described above, and the rear end of the ball holding strip 2 and the rear stopper 35 of the fixed inner rail 3 are in contact with the inner surface of the rear stopper 14 of the fixed outer rail 1, and the movable outer rail 4, the rear end of the moving-side inner rail 6 is in contact with the inner surface of the rear stopper 43, and the rear end of the ball holding strip 5 is in contact with the rear end stopper 46, that is, the state in which the rail is most contracted (this state Since the rear end of the movable inner rail 6 pushes up the lock release guide piece 73, the locking protrusion 71 is located at the uppermost part of the rotation range regulating hole 50 and the insertion hole 36. and is located above the inner rail stopper 15.The inclined guide surface 73 is in surface contact with the inner surface of the inclined portion 65 of the movable inner rail 6 while being biased by the spring member 39. ), when a drawer or the like connected to the movable inner rail 6 is pulled out, the movable inner rail 6 and the movable outer rail 4 move forward together with the fixed inner rail 3 relative to the fixed outer rail 1. , Eventually, the front end of the ball holding strip 2 and the front stopper 33 become the front stopper of the fixed side outer rail 1,
The intermediate stopper 34 comes into contact with the stopper protrusion 24, and the movement of the moving side outer rail 4 is stopped.

Next, the movable inner rail 6 continues to move forward relative to the movable outer rail 4, and when the rear end of the movable inner rail 6 moves to the front side of the lock release guide protrusion 73 of the rotating lock piece 7, the lock is released. The piece 7 is rotated downward by the spring member 39, and the locking protrusion 71 is attached to the ball holding strip 2.
It is located on the front side of the inner rail stopper 15 within the insertion notch 25 of the inner rail stopper 15.

In this state, the movable outer rail 4 is locked by the inner rail stopper 15 and the locking protrusion 71 while being moved forward with respect to the fixed rail 1, so that it will not move backward inadvertently.

When the moving-side inner rail 6 moves further forward, the stopper hole 81 of the elastic stopper 8 engages with the front stopper 44 of the moving-side outer rail 4, and the movement of the moving-side inner rail 6 with respect to the moving-side outer rail 4 is stopped. do.

In this state, the moving side inner rail 6 is connected to the moving side outer rail 4 by the elastic stopper 8 and the front stopper 44.
Then, the movable outer rail 4 is completely locked with the stationary rail 1 by the locking protrusion 71 of the rotating lock piece 7 and the inner rail stopper 15, and will not move back and forth inadvertently.

Next, when removing the moving inner rail 6 from the moving outer rail 4 (when removing equipment from the rail)
Push the extraction operation part 82 toward the board 62 side of the moving inner rail 6 with a fingertip, maintain the disengaged state between the stopper hole 81 and the front stopper 44, and extract it forward.

On the other hand, when moving the moving side outer rail 4 and the moving side inner rail 6 backward, the extraction operation part 82 is pushed toward the board 62 side, and the engagement between the stopper hole 81 and the front stopper 44 is released. When the movable inner rail 6 is moved rearward while maintaining this, the rear end portions of the upper and lower bent edges 61, 61 of the movable inner rail 6 eventually rotate while coming into contact with the inclined surface 72 of the rotation lock piece 7. The movable lock piece 7 is rotated upward against the spring member 39, and the locking protrusion 71 is moved above the inner rail stopper 15.

Then, the moving side outer rail 4 moves rearward, and eventually the rear end of the ball holding strip 2 and the rear stopper 36 of the fixed side inner rail 3 come into contact with the rear stopper 14 of the fixed side outer rail, and the moving side inner rail 4 comes into contact with the rear stopper 14 of the fixed side outer rail. The rear end of the rail 6 is attached to the rear stopper 43 of the moving side outer rail 4,
The rear end of the ball holding strip 5 comes into contact with the rear end stopper 46 and the movement is stopped.

<<Effect>> A stopper protrusion that protrudes toward the fixed inner rail is provided in the longitudinal center of the board of the ball holding strip of the fixed outer rail, and a center stopper is formed at the rear of the fixed inner rail in correspondence with the stopper protrusion. Therefore, the ball holding strip can be made longer without shortening the moving distance of the fixed inner rail (the length of the fixed outer rail is half the moving distance of the fixed inner rail). (dimension minus the length of 1),
As a result, even when the fixed inner rail is stored in the fixed outer rail, the fixed inner rail can be supported over a wide range, improving the stability of the entire rail and providing superior strength. Become.

Further, a stable inclined surface is formed on the unlocking guide protrusion of the rotating locking piece, and the inclined stable surface is in surface contact with the inner surface of the inclined portion of the moving side inner rail in the unlocking position, and the inclined guiding surface maintains the surface contact with the spring material. Since the inner rail on the movable side is about to be pulled out,
First, due to the frictional resistance between the inclined guide surface and the inclined part,
The movable inner rail, the movable fixed rail, and the fixed inner rail slide simultaneously.

After that, the moving inner rail moves relative to the moving outer rail.

Also, when the inner rail on the moving side is stored,
Since it has a rotation lock piece and an elastic stopper, the moving inner rail slides against the moving outer rail, and when the moving inner rail is stored, the moving outer rail slides against the fixed outer rail. Slide in order.

That is, since the load of the equipment is correctly applied from the upper position of the sliding rail, the sliding condition of each rail is very smooth.

[Brief explanation of the drawing]

The figures show one of the embodiments of the present invention. Fig. 1 is an exploded perspective view of the main parts of the invention, and Fig. 2 is a partially cutaway view of the moving-side inner rail stored in the moving-side outer rail. Figure 3 is a front view of the main part with the inner rail on the moving side moved forward with respect to the outer rail on the moving side, Figure 4 is a sectional view taken along line A-A in Figure 2, and Figure 5 is FIG. 4 is a sectional view taken along line BB in FIG. 3; 1... Fixed side outer rail, 11, 11... Upper and lower bent edges, 15... Inner rail stopper, 2... Ball holding strip, 23... Ball, 24... Stopper protrusion, 3... Fixed side inside Rail, 31, 31...
Upper and lower bending edges, 34... Intermediate stopper, 4... Moving side outer rail, 44... Front stopper, 6...
Moving-side inner rail, 65... Slope portion, 7... Rotating lock piece, 71... Locking protrusion piece, 72... Lock release guide protrusion piece, 73... Inclined guide surface, 8... Elastic stopper.

Claims (1)

[Scope of utility model registration request] A fixed side rail with a substantially C-shaped cross section, a fixed inner rail with a substantially C-shaped cross section that is slidable on the fixed outer rail, and a ball that rotatably holds the ball between the upper and lower bent edges of both of the rails. The above-mentioned first
It is a rail such as a drawer that is constructed by fixing the moving side outer rail of a second drawer rail, which is composed of a moving side outer rail, a moving side inner rail, and a ball holding strip, which have almost the same cross section as the drawer rail, and the above fixed side outer rail. An inner rail stopper is formed on the inner surface of the middle part of the rail that protrudes toward the fixed inner rail, and an inner rail stopper is formed on the inner surface of the rear end of the moving outer rail that passes through the moving outer rail, the fixed inner rail, and the ball holding strip. Then, the rotating lock piece is attached to the inner rail stopper so as to be freely engageable and detachable, and a rotational force is applied in the direction of engagement with the inner rail stopper, while the front stopper is attached to the front end of the moving side outer rail. An elastic stopper that elastically engages with the front stopper is formed approximately in the middle of the moving-side inner rail, and locks the rotating lock piece at an inclined portion of the rear end of the moving-side inner rail. In a rail stopper device such as a drawer configured to rotate to release the locked state between the locking protrusion and the inner rail stopper, the ball retaining strip of the fixed outer rail is A stopper protrusion corresponding to the intermediate stopper formed at the rear of the fixed inner rail at the center in the longitudinal direction of the board, with a dimension obtained by subtracting 1/2 of the moving distance of the fixed inner rail from the length. is formed, and a slightly tapered slope is formed at the rear end of the inner rail on the moving side, and the rotating lock piece has a locking protrusion that locks on the inner rail stopper, and a locking piece on the moving side. It has a lock release guide protrusion that is pushed up by the rear end of the inner rail, and the lock release guide protrusion has an inclined guide surface that makes surface contact with the inner surface of the inclined part of the movable inner rail in the lock release position. A stopper device for rails such as drawers.