JP4746582B2 - Slide rail with reinforced end stops - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a slide rail in which an inner member is slidably joined to an outer member via a ball, and in particular, an end with reinforcement in which a bent portion for reinforcement is provided at an end stop portion at the end of the inner member. The present invention relates to a structure of a slide rail provided with a stop.

  Slide rails are widely used mainly for household and lightweight precision machines and doors. Since the slide rail has a low resistance, it is used in many cases when it takes a heavy weight or is required to move and store with high accuracy. There is an advantage in that a drawer such as a movable part can be pulled out or pushed back without applying a large force. In particular, slide rails are often used for merchandise display equipment, precision machinery, electronic equipment, business equipment, office file boxes, cabinets, and office machinery.

  Since the slide rail used for the door enables the door body, which is heavy, to be moved with less wear, there is an advantage that the door can be opened and closed without applying a large force. However, when the door is opened and closed, a large impact is applied to the end stop portion provided on the inner member when the door is stopped. If the impact at the time of stop is repeatedly applied to the end stop portion provided in the inner member, the part may be damaged and the rail function may not be performed. In order to prevent such breakage and breakage, conventionally, as a stop mechanism, the longitudinal end portion is vertically raised to form a stopper contact surface to reinforce the strength against impact.

  Since the slide rail has the advantage of being able to reciprocate a heavy member with a small force as described above, it has a wide range of applications, and there is also a need to smoothly move by suspending a larger load. However, if the end stop of the slide rail is not strong enough, an unexpectedly large pressure will be concentrated on the end stop due to an impact proportional to the load, causing deformation, etc. Even if it is in a state where it can fulfill, there may be a situation where the entire slide rail cannot be used.

  As a result, the end stop portion is deformed or the like, so that the entire use of the slide rail (for example, the entire file box of the office file box) has reached the end of its life, and it may be necessary to replace the whole. . It is mainly this end stop that receives an impact each time it is used. Therefore, the end stop part strength of the inner member of the slide rail to which impact is applied by opening and closing the door is increased, and the end of the product life that is durable and does not transform into impact at the time of stop even when the load is larger It was desired to develop a slide rail structure with a stop.

JP 2000-139596 A

  The object of the present invention is to increase the strength of the end stop portion in the inner member of the slide rail to which an impact is applied by opening and closing the door, which is the above-mentioned problem, and a reinforced end stop with a long product life that can withstand a stop impact due to a larger load It is providing the slide rail provided with.

  In order to achieve the above object, a slide rail provided with a reinforced end stop according to the present invention is a slide rail in which an inner member is slidably coupled to an outer member via a ball held by a ball retainer. As the end stop portion provided at the end portion of the inner member in the longitudinal direction, the rail bottom surface of the inner member is raised substantially vertically to form a contact surface, and on both side surfaces of the rail, from the rail bottom surface to the longitudinal direction. This is a structure in which a bent portion that is bent inwardly of the inner member is provided so as to extend a vertically raised side wall and hold both ends of the contact surface.

The slide rail having a reinforced end stop according to the present invention has the above-described structure, the strength of the end stop portion is increased, and the stopper is applied to a larger number of impacts even when the load is larger than that of the prior art. Since the function can be secured, there are the following effects.
First, since it has durability against a larger load than before, the inner member is held in a ball retainer in the outer member against a movable object that is heavier than conventional ones such as a door and a wide door. A slide rail having a shape slidably conjugated can be used. Next, since it is possible to withstand a larger number of impacts than before, the life of the instrument using the slide rail with the end stop portion can be extended.

  Hereinafter, a slide rail having a reinforcing end stop according to the present invention will be described based on an embodiment shown in the drawings. FIG. 1 is a perspective view showing a state in which an end stop portion according to the present invention is provided at an end portion of an inner member of a slide rail. The end stop portion according to the present invention is provided at the end portion of the inner member 12 of the slide rail 10 as shown in FIG. As shown in the sectional view of the conventional slide rail of FIG. 5, the slide rail 10 is composed of an outer member 11, an inner member 12, and a ball 14 held by a ball retainer. Is configured to slide smoothly with the effect of friction minimized.

  The end stop portion 20 provided at the end of the inner member includes a contact surface 22 and bent portions 23a and 23b. FIG. 2 is an end view of the inner member 12 provided with the end stop portion 20. 3 is a front view of the side wall of the inner member 12, and FIG. 4 is a sectional view of the inner member 12 provided with an end stop with reinforcement, taken along line 1A-A 'of FIG.

  As shown in FIG. 5, the slide rail 10 is composed of a long outer member 11 and an inner member 12 that slides therein, and is slidable with a ball retainer that holds a ball 14 interposed therebetween. The outer wall of the inner member 12 is provided with an outer groove that is recessed in a semicircular arc shape for joining the ball 14 of the ball retainer over the entire length. On the other hand, the inner wall of the outer member 11 is provided with an inner groove recessed in a semicircular arc for allowing the ball 14 to roll over the entire length so as to face the outer wall of the inner member 12.

  The ball 14 is a large number of metal balls that are rotatably held by a ball retainer, and is rotatably coupled between the outer wall of the inner member and the inner wall of the outer member. The outer member is configured to be slidably engaged with the inner member via the ball 14. The outer groove of the inner member 12 to which the ball 14 is joined becomes the running surface of the ball 14 together with the inner groove on the inner side of the outer member 11 and is formed as a transverse arc-shaped guide groove, and the arc portion is the same as the outer periphery of the ball 14. The ball 14 is wrapped from the side with a radius of curvature.

  The slide rail 10 is provided with a locking tool (not shown) for stopping the inner member 12 in the outer member 11. The movement width of the door and the drawer that is mounted is limited by the locking tool.

  The abutting surface 22 is a locking portion that stops the sliding of the inner member 12, and is formed so that the longitudinal end of the bottom surface of the inner member 11 rises substantially vertically and stands vertically with respect to the bottom surface. ing. FIG. 2 is a view of the contact surface viewed from the left side in FIG. 1, and the height of the contact surface 22 does not have to be the same as the height of the side wall 24.

  The bent portions 23a and 23b are projections for withstanding an impact at the time of stop, and the side walls 23a and 23b raised substantially vertically from the bottom surface of the slide rail to the both side walls of the slide rail 10 are extended in the distal direction. It is formed by bending inwardly so as to hold both end faces of the contact surface 22. The bent portions 23a and 23b in FIG. 2 represent the shape of the bent portion when the slide rail 10 is viewed from the left side, and FIG. 4 is shown from the direction of the A-A 'cross-sectional view. When the inner member 12 collides with the outer member 11, the bent portions 23 a and 23 b become the leading end surfaces that come into collision contact, and the abutting surface 22 that is erected has a shape that receives the present impact.

As a result of the experiment, the results shown in the following table have been confirmed.
From the table below, the product of the present invention can be used up to about 1.2 times the load with about 1.5 times the load and the number of times that the normal product has reached the end of its service life. The improvement of the property and strength and the extension effect of the life are seen.

  In addition, although the shape of the contact surfaces 23a and 23b is formed by bending the side wall in the present invention, the rising shape may be a bow shape, a mountain shape, or a wave shape. Moreover, the structure which mounts another member instead of the mechanism which raises a bottom face may be sufficient. In addition, if the bent portion is bent inward so as to hold both sides of the contact surface, the bent portion may be semicircular or mountain-shaped, and is raised substantially vertically from the rail bottom surface in the longitudinal direction. The side wall may be a straight line or the like for reasons such as not using a ball retainer.

The perspective view of the slide rail provided with the end stop with reinforcement concerning this invention Left side view of end stop with reinforcement according to the present invention The front view of the side wall of the inner member provided with the end stop with reinforcement which concerns on this invention AA 'sectional view of an inner member provided with a reinforced end stop according to the present invention Cross section of conventional slide rail

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Slide rail 11 Outer member 12 Inner member 14 Ball 20 End stop part 22 Contact surface 23a, 23b Bending part 24 Side wall

Claims (1)

  In a slide rail in which an inner member is slidably joined via a ball held by a ball retainer in an outer member, the bottom surface of the inner member is used as an end stop provided at the longitudinal end of the inner member. Of the inner member so as to hold both ends of the abutment surface by extending the side walls raised substantially perpendicularly in the longitudinal direction from the bottom surface of the rail to both side surfaces of the rail. A slide rail provided with a reinforced end stop, characterized in that it is provided with a bent portion bent inward.

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