JPH08214965A - Sliding rail - Google Patents

Abstract

PURPOSE: To prevent a connector or a connecting cable from being disconnected or broken even if a unit is strongly drawn, by pressing a hooking member in the direction of the protrusion to reinforce a hook by a pressing means in the case of controlling the motion of a second rail. CONSTITUTION: In a sliding rail 3, a middle rail 5 slides in an outer rail 4, and an inner rail 6 slides in the middle rail 5. The inner rail 6 is provided with a plate spring 14 and a plate spring 15 for reinforcement so that they overlap each other while keeping a certain angle therebetween. The both plate springs 14, 15 are deflected down in the direction of C because of being pressed by the middle rail 5. When a drawing type unit is drawn, the protrusion 10 of the outer rail 4 collides against the convex part of a groove 11 of the middle rail 5, and then the inner rail 6 comes out of the middle rail 5 and a protrusion 16 collides against the tip 23. When the drawing type unit is drawn more, the protrusion 16 presses the tip 23 of the plate spring 14 to deflect the plate spring 14 down, and the protrusion 16 is moved onto the taper face 26 of the plate spring 14 and is hooked with a notch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide rail for pulling out a unit used in an apparatus having a drawer type unit.

[0002]

2. Description of the Related Art Conventionally, a slide rail for pulling out a unit, which is used in a device having a drawer type unit, is provided with a movement of a second rail which slides in the first rail.
There is one in which a leaf spring fixed to the second rail is hooked on a protrusion provided on the first rail to regulate it. this is,
When pulling out the unit from the device, the notch provided on the leaf spring is hooked on the protrusion at a predetermined position to regulate the amount of pulling out of the unit, and the unit may drop from the device due to overdrawing, or the device may tilt due to the weight of the unit It prevents that.

Further, such restriction by the protrusion is released by pressing the leaf spring in a direction away from the protrusion by a human hand. For example, when performing maintenance on equipment housed in the unit, it is necessary to completely remove the unit from the device. In such a case,
When the leaf spring is pressed in a direction away from the protrusion to bend it and the regulation of the protrusion is released, the unit can be further pulled out and removed from the device. The leaf spring as described above has a larger force to be caught on the protrusion as it is fixed to the second rail at a larger angle.

[0004]

In the conventional slide rail, if the unit is a small unit, the slide rail must be made small, and in the small slide rail, the slide rail is sufficiently smaller than the second rail. Since it is not possible to fix the leaf spring at an angle, the force of catching on the protrusion becomes small, and when the unit was pulled out with a strong force, the leaf spring was caught by the pulling force without pushing the leaf spring with human hands. There is a problem that the leaf spring bends, the regulation is released, the unit is pulled out more than necessary, the connection connector is pulled out, and the connection cable is broken.

[0005]

In order to solve the above problems, in the slide rail of the present invention, when the movement of the second rail is restricted, the leaf spring is pressed in the protruding direction to reinforce the catch. The pressing means is provided.

[0006]

When the unit having the slide rail configured as described above is pulled out from the apparatus, the second rail moves and the tip of the leaf spring comes into contact with the projection, and the leaf spring is pressed by the projection and bends. When the pressing means is pressed by the bending of the plate spring and the second rail further moves, the protrusion is caught on a part of the plate spring, the movement of the second rail is restricted, and the pressing means stops. Presses the leaf spring toward the protrusion by the reaction force and reinforces the catch.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The elements common to the drawings are designated by the same reference numerals. FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view showing an essential part of the embodiment, and FIG. 3 is a sectional view showing an essential part of the embodiment. FIG. 4 is a perspective view showing a drawer type unit of one embodiment.

In FIG. 4, a device 1 such as an electric device is
It has six drawer type units 2. A handle 7 is attached to the front of the drawer unit 2. Further, slide rails 3 are attached to the lower portions of both side surfaces. The pull-out unit 2 can be moved in the arrow BB ′ direction with respect to the device 1 by this slide rail 3. The slide rail 3 includes an outer rail 4, an intermediate rail 5, and an inner rail 6. The outer rail 4 is attached to the inside of the side wall of the device 1,
The intermediate rail 5 slides in the outer rail 4. The inner rail 6 is attached to the outside of the side wall of the drawer unit 2 and slides in the intermediate rail 5.

In FIG. 1, the outer rail 4 of the slide rail 3 has a screw hole 8 on its side surface, which is screwed to the outer rail 4 of the device 1 when it is mounted on the inner side wall of the device 1. Further, a projection 10 is formed integrally with the entrance / exit 9 into which the outer rail 4 is inserted. The intermediate rail 5 has an outer shape along the doorway 9 of the outer rail 4, and a groove 11 is formed at a position facing the protrusion 10 of the outer rail 4.

The inner rail 6 further includes the intermediate rail 5.
Has a screw hole 13 on its side surface, which is screwed to the drawer type unit 2 when it is attached to the outside of the side wall of the drawer type unit 2. A leaf spring 14 and a reinforcing leaf spring 15 are fixed to the surface of the inner rail 6 opposite to the drawer unit 2 so as to overlap each other. A protrusion 16 is integrally formed inside the doorway 12 of the intermediate rail 5 at a position facing the leaf spring 14.

In FIG. 2, the leaf spring 14 is formed of an elastic material, and has a valley-folded bent portion 17 and mountain-folded bent portions 18 and 19. The leaf spring 14 is divided into a mounting portion 20, an elastic portion 21, a hook portion 22, and a tip portion 23 by these bent portions 17, 18, and 19. The attachment portion 20 is provided with a screw hole 24 that is fixed by a screw when attached to the inner rail 6. A substantially rectangular cutout 25 is provided substantially in the center of the retaining portion 22, and the cutout 25 is formed with a tapered surface 26 that is obliquely bent toward the reinforcing leaf spring 15 side. Further, the portion from the hook portion 22 to the tip portion 23 of the leaf spring 14 is tapered.

The reinforcing leaf spring 15 is also made of an elastic material, and has valley-folded bent portions 27 and 28 and mountain-folded bent portions 29 and 30. The reinforcing leaf spring 15 has the bent portion 27, 28, 29, 30 attached to the mounting portion 31,
It is divided into a hook portion 32, a contact portion 33, an elastic portion 34, and a tip portion 34a. The attachment portion 31 is provided with a screw hole 35 that is fixed by a screw when attached to the inner rail 6. The hook portion 32 includes a tip portion 23 of the leaf spring 14 and a notch 2
An escape hole 36 and a notch 37 are provided at positions facing 5 respectively.

When the leaf spring 14 and the reinforcing leaf spring 15 are screwed to the inner rail 6 by the screw holes 24 and 35,
The leaf spring 14 and the reinforcing leaf spring 15 are attached to the inner rail 6 while keeping an angle. Further, the leaf spring 14 and the reinforcing leaf spring 15 are overlapped with each other, and the reinforcing leaf spring 15 is attached to the bent portion 18 of the leaf spring 14.
The bent portion 30 comes into contact with the hook portion 22 of the leaf spring 14 and the contact portion 33 of the reinforcing leaf spring 15. At this time, the reinforcing leaf spring 15 is pressed in the direction of arrow C by the leaf spring 14,
The tip portion 34a comes into contact with the inner rail 6 and slightly bends, and the reaction force reinforces the elastic force of the leaf spring 14.

FIG. 3 shows a state in which the leaf spring 14 and the reinforcing leaf spring 15 are attached to the inner rail 6 by cutting the arrow AA portion in FIG. In the figure, the leaf spring 14 and the reinforcing leaf spring 15 are pressed by the intermediate rail 5 and bent in the direction of arrow C, and further, the notch 2 in FIG.
The protrusions 16 of the intermediate rail 5 are hooked on the rails 5, 37, and their movement is restricted. That is, it shows a state in which the drawer type unit 2 in FIG. 4 is completely drawn out.

The movement of the slide rail 3 as described above will be described with the opening and closing of the drawer type unit 2. It is assumed that the drawer type unit 2 in FIG. 4 is completely accommodated in the device 1. At this time, the inner rail 6 is accommodated in the intermediate rail 5, and the intermediate rail 5 is accommodated in the outer rail 4. If the operator holds the handle 7 and pulls the pull-out unit 2 in the arrow B direction with a weak force, the pull-out unit 2 moves smoothly in the arrow B direction. At this time, the intermediate rail 5 is replaced by the outer rail 4
It comes out from inside while sliding in the direction of arrow B.

When the pull-out unit 2 is pulled out to some extent, the protrusion 10 provided at the outlet 9 of the outer rail 4
Collide with a protrusion (not shown) provided in the groove 11 of the intermediate rail 5, and regulate the movement of the intermediate rail 6 in the arrow B direction.
As a result, the intermediate rail 6 can no longer be pulled out from the outer rail 4. When the pull-out unit 2 is subsequently pulled in the direction of arrow B, the inner rail 6 comes out from the inside of the intermediate rail 5 while sliding in the direction of arrow B. Due to this movement, the projection 16 provided at the outlet 12 of the intermediate rail 5 collides with the distal end portion 23 of the leaf spring attached to the inner rail 6. Here, the drawer of the drawer unit 2 is once restricted.

When the operator pulls the pull-out unit 2 in the direction of arrow B with a stronger force, the tip portion 2 of the leaf spring 14 is pulled.
3, the protrusion 16 presses the elastic portion 21 and the hooking portion 22 to bend in the direction of arrow C. The bent leaf spring 14 further bends the reinforcing leaf spring 15 below it in the direction of arrow C. At this time, the distal end portion 23 of the leaf spring 14 enters the escape hole 36 provided in the hooking portion 32 of the reinforcing leaf spring 15. When the inner rail 6 further moves, the protrusion 16 contacts the tapered surface 26 of the leaf spring 14. The protrusion 16 is the inner rail 6
Moves on the tapered surface 26 as it moves, and is hooked in the notches 25 and 37 as shown in FIG.

Here, the distance between the intermediate rail 5 and the inner rail 6 is small because of the downsizing of the device, and the leaf spring 14 cannot be fixed to the inner rail 6 with a sufficient angle. In this case, even if the spring force of the leaf spring 14, that is, the force of catching on the protrusion is small,
Since the reinforcing leaf spring 15 on the lower side is bent, the catching of the leaf spring 14 is reinforced by the reaction force thereof. That is, even if the operator pulls out the pull-out unit 2 with a strong force, the leaf spring 14 is not disengaged by the momentum. In this way, the inner rail 6 is restricted from moving in the direction of the arrow B, and cannot be further pulled out from the intermediate rail 5. Here, the pull-out unit 2 is completely pulled out.

On the contrary, when the operator pushes the drawer type unit 2 in the direction of the arrow B ', the protrusion 16 of the intermediate rail 5
Rides on the tapered surface 26 of the leaf spring 14 again and presses the leaf spring 14 and the reinforcing leaf spring 15 in the direction of arrow C. Further, the inner rail 6 moves into the intermediate rail 5 while moving in the direction of the arrow B ′. When the protrusion 16 moves away from the tip portion 23 of the leaf spring 14 along with the movement of the inner rail 6, the inner rail 6 starts to move smoothly in the direction of the arrow B ′ and completely fits in the intermediate rail 5. Next, the intermediate rail 5 starts to move smoothly in the direction of the arrow B ′ and is set inside the outer rail 4. The pull-out unit 2 is now completely contained within the device 1.

Next, the attaching / detaching operation of the drawer type unit 2 with respect to the apparatus 1 will be described. In FIG. 3, in a state where the pull-out unit 2 as described above is completely pulled out from the device 1, the operator presses the hooking portion 22 of the leaf spring 14 in the direction of arrow C with a finger or the like. By this pressing, the leaf spring 1
The leading end portion 23 of 4 enters into the escape hole 36 of the reinforcing leaf spring 15 and the escape hole 38 provided in the inner rail 6.
Further, the tapered surface 26 of the leaf spring 14 is also attached to the inner rail 6
Into the escape hole 39 provided in the. Due to such pressing, the protrusion 16 of the intermediate rail 5 is released from the engagement of the leaf spring 14 and the reinforcing leaf spring 15 with the notches 25 and 37.
In this state, the operator holds the pull-out unit 2 and pulls out the inner rail 6 completely from the intermediate rail 5 and removes it from the apparatus 1.

When the drawer type unit 2 is attached to the apparatus 1 again after the maintenance of the equipment housed in the drawer type unit 2 and the like, the inner rail 6 is held by the inner rail 6 while holding the drawer type unit 2 in the same manner. Insert in 5 and push in. As a result, the protrusion 16 of the intermediate rail first comes into contact with the elastic portion 21 of the leaf spring 14 to bend the leaf spring 14 and the reinforcing leaf spring 15 in the arrow C direction. When the inner rail 6 is further moved, the projections 16 are again cut into the notches 2 of the leaf spring 14 and the reinforcing leaf spring 15 as shown in FIG.
The drawer type unit 2 is attached to the apparatus 1 by being hooked on the apparatus 5 and 37.

In this way, when the movement of the inner rail 6 is restricted, by providing the reinforcing leaf spring 15 that presses the leaf spring 14 in the direction of the protrusion 16 to reinforce the catch, the drawer type unit 2 is provided. Even if the pull-out unit 2 is small, the force hooked on the projection 16 of the leaf spring 14 is reinforced, so that even if the pull-out unit 2 is pulled out with a strong force, the pull-out unit 2 is pulled out more than necessary and the connection connector is pulled out. The connection cable can be prevented from being broken. The reinforcing leaf spring 15 may have a structure in which the tip end portion 24 a thereof does not contact the inner rail 6 when pressed by the leaf spring 14. The same effect can be obtained by providing a compression spring instead of the reinforcing leaf spring as the pressing means.

[0023]

Since the present invention is configured as described above, it has the following effects.

That is, when the movement of the second rail is restricted, by providing the pressing means for pressing the leaf spring in the direction of the protrusion to reinforce the catch, even if the unit is a small unit, for example, Since the force hooked on the protrusion of the spring is reinforced, even if you pull out the unit with a strong force, the unit will be pulled out more than necessary and the connection connector will fall out,
The connection cable can be prevented from breaking.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of one embodiment.

FIG. 3 is a cross-sectional view showing the main parts of one embodiment.

FIG. 4 is a perspective view showing a drawer type unit according to an embodiment.

[Explanation of symbols]

 3 Slide rail 5 Intermediate rail 6 Inner rail 14 Leaf spring 15 Reinforcing leaf spring 16 Protrusion

Claims (3)

[Claims] 1. The movement of a second rail that slides in the first rail is restricted by hooking a hooking member fixed to the second rail on a protrusion provided on the first rail, In the slide rail in which the restriction by the projection is released by pressing the stopper member in the direction away from the protrusion, when the movement of the second rail is restricted, the latch member is pressed in the direction of the protrusion and caught. A slide rail characterized in that it is provided with a pressing means for reinforcing. 2. The slide rail according to claim 1, wherein the pressing means is a reinforcing elastic member fixed to a second rail opposite to the protrusion with respect to the latching member. 3. The hook member and the reinforcing elastic member are dogleg-shaped leaf springs.
The described slide rail.