JP2013144016A - Clamping deformation responsive slide rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide rail capable of achieving a standard clamping torque even if the slide rail is a miniaturized type, and capable of responding to the clamping deformation without deforming an attaching hole or the slide rail itself.SOLUTION: The slide rail includes: an outer member whose cross section is approximately C-shaped; a ball; an inner member whose cross section is approximately U-shaped; and a ball retainer for retaining the ball. In the slide rail, a slit is bored in the vicinity of the attaching hole bored on the upper bottom surface of the outer member or on the lower bottom surface of the inner member to prevent deformation of the slide rail caused by clamping of a screw, etc. when the slide rail is attached. The slide rail also has an uneven part formed by embossing or half blanking in the vicinity of the attaching hole.

Description

  TECHNICAL FIELD The present invention relates to a slide rail that is used for movable parts such as electronic equipment and furniture, and in which an inner member is slidably joined via a ball in an outer member, and in particular, a fixture such as a screw when the slide rail is attached. The present invention relates to a tightening / deformation-compatible slide rail in which a hole made of an elongated portion is formed in the vicinity of a mounting hole in order to prevent the slide rail from being distorted by tightening.

  Slide rails are used for moving parts of a wide range of products such as household and lightweight precision machines and doors. Since the slide rail has low resistance, it is used in many cases as a sliding means for a moving body or a storage body that requires weight or requires 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, high-precision slide rails are often used in product display equipment, precision machinery, electronic equipment, business equipment, office file boxes, cabinets, and office machinery. Recent slide rails are structurally devised so that the joint surface between the ball and the ball running surface is always small, and is designed precisely to reduce sliding resistance by the rotation of the ball.

Slide rails used for doors, drawers, etc. allow the doors, drawers, etc., which are heavy to be moved lightly with little friction, so that the doors, drawers, etc. can be opened and closed without applying a large force There is. The resistance generated when sliding objects such as doors and drawers can be reduced, but the weight of the doors and drawers themselves should be held by the outer or inner member installed on the ceiling or wall. It becomes. The outer member or the inner member is fixed by screwing a locking tool such as a screw into an attachment hole drilled at an arbitrary position on the upper bottom surface or the lower bottom surface of the slide rail. Since sliding objects such as doors and drawers are assumed to have a considerable weight, it is necessary to fasten the screws and the like for fixing the slide rail with an appropriate tightening torque.

The slide rails can be designed to reciprocate heavy doors and drawers with less force due to improved accuracy and durability, but the slide rails need to be installed more appropriately. The nature is also increasing.
Especially for small slide rails, the width of the rail is narrower than that of conventional products, so the screws and mounting holes tend to be relatively larger than the rail width. When attaching to the rail, the rail may be deformed if tightened firmly and firmly. In addition, many small slide rails with standard thickness are produced, but in order to maintain the required standard tightening torque, it is necessary that the screw members need a certain size. It is. Therefore, the structure has to be relatively easily deformed. Because of these circumstances, some products have special instructions to tighten them so that they do not deform.

If an excessive load is applied to the slide rail mounting hole to which a screw or the like is screwed and the metal around the mounting hole is distorted, the slide rail itself around the portion where the mounting hole is drilled is distorted and the ball is distorted. The running surface is deformed, so that the running accuracy of the rail cannot be maintained, and if left unattended, there is a problem that the running is hindered.

Large pressure concentrates on the slide rail mounting hole, causing deformation of the slide rail itself, so that even if the outer member and the inner member are slidable, the ball fitted between them is as expected Since it does not rotate, the entire slide rail may not perform its original function. As a result, it is assumed that the entire movement of the article using the slide rail becomes irregular due to wear deformation of the sliding surface, and the entire replacement is necessary. It is the portion of the mounting hole that may cause deformation when the slide rail is mounted. Therefore, it prevents distortion due to the tightening of the periphery of the conventional mounting hole, and even with a small slide rail, the mounting hole and slide rail do not deform even when a large tightening torque is applied. It has been desired to develop a slide rail that can be used while maintaining the above and can cope with tightening deformation with a long product life.

JP 2000-287771 A JP 2009-112409 A

An object of the present invention is to solve the above-mentioned problems, and can realize a standard tightening torque even in a small slide rail, and has a stable linearity without deformation of the mounting hole and the slide rail itself. An object of the present invention is to provide a tightening / deformation-compatible slide rail capable of maintaining a secured use state.

In order to achieve the above object, a slide rail according to the present invention comprises an outer member in which a ball running surface comprising semicircular concave grooves is formed on both arm portions having a substantially C-shaped cross section, a ball, and a substantially U-shaped cross section. A slide rail comprising an inner member formed with a semicircular groove formed on a mold and having a ball running surface, and a ball retainer that rotatably holds the ball in the outer member. In order to prevent distortion of the slide rail caused by tightening of a fixture such as a screw, it is elongated along the longitudinal direction of the slide rail in the vicinity of the mounting hole drilled in the upper bottom surface of the outer member or the lower bottom surface of the inner member. It is the structure which bored the hole.

  In addition, a structure in which a convex concave portion formed by embossing or half-cutting is formed in the direction perpendicular to the longitudinal direction of the slide rail in the vicinity of the mounting hole perforated on the upper bottom surface of the outer member or the lower bottom surface of the inner member It is.

Since the slide rail according to the present invention is configured as described in detail above, it has the following effects.
1. By forming an elongated hole in the vicinity of the mounting hole on the upper bottom surface of the outer member or the lower bottom surface of the inner member, deformation of the slide rail caused by tightening of a fixture such as a screw when the slide rail is mounted is prevented. It has become possible to provide a slide rail in which the movement of the inner member and the ball is made smooth and the straightness of the entire slide rail is ensured, and each part can be attached while maintaining the shape of the shipment state.
2. By forming a convex recess in the vicinity of the mounting hole on the upper bottom surface of the outer member or the lower bottom surface of the inner member, it is possible to more effectively prevent distortion due to tightening during mounting. It is possible to make a mounting hole that is compatible with a tightening deformation.

FIG. 3 is a perspective view of an outer member of a tightening deformation-compatible slide rail according to the present invention. Sectional view of a tightening deformation compatible slide rail according to the present invention Plan view of a tightening deformation-compatible slide rail according to the present invention FIG. 3 is a plan view of an inner member of a tightening deformation-compatible slide rail according to the present invention. Front view of a tightening deformation compatible slide rail according to the present invention Sectional view of a tightening deformation compatible slide rail according to the present invention FIG. 3 is a plan view of an inner member of a tightening deformation-compatible slide rail according to the present invention. The perspective view of the inner member of the tightening deformation corresponding slide rail concerning the present invention

Hereinafter, the slide rail according to the present invention will be described in detail based on an embodiment shown in the drawings.
The slide rail 10 according to the present invention includes an outer member 20, outer member saddle-shaped arms 22a and 22b, inner member saddle-shaped arms 23a and 23b, an outer member ball running surface 24, and an inner member ball running surface 26. And a mounting hole 30, an elongated hole 40, an extended skirt 42, a convex recess 50, an inner member 60, a ball 70, and a ball retainer 80.

The slide rail 10 has a configuration in which an elongated hole 40 is formed in the vicinity of the mounting hole 30 drilled in the upper bottom surface of the outer member 20 along the longitudinal direction of the slide rail.

  In addition, an elongated hole 40 is formed in the lower surface of the inner member 60 along the longitudinal direction of the slide rail in the vicinity of the mounting hole 30 which is drilled as shown in FIG.

  In another embodiment of the present invention, a convex recess 50 formed by embossing or half-cutting is formed in the direction perpendicular to the longitudinal direction of the slide rail in the vicinity of the mounting hole 30 drilled in the upper bottom surface of the outer member 20. It is also a configuration.

The outer member 20 is a member attached to a fixed side such as a frame, a wall, or a beam, and is formed by bending both longitudinal ends of a metal elongated plate. An inner member 60 is provided in the outer member 20. As shown in the cross-sectional view of FIG. 2, a saddle type having a substantially C-shaped cross section is formed so as to form a ball running surface 24 that holds the ball 70 from the outside by holding both ends in the longitudinal direction of the cross section in parallel. Shaped arms 22a and 22b are formed, and a ball running surface 24 made of a semicircular concave groove is formed on both inner sides in the longitudinal direction inside the saddle-shaped both arms.

The saddle-shaped arm 22a and the saddle-shaped arm 22b are bent substantially at both ends in the longitudinal direction of the metal elongated plate of the outer member 20, and hold the both ends in the longitudinal direction of the transverse section in parallel so as to have a substantially C-shaped cross section. This is a configuration in which a ball traveling surface formed of a semicircular concave groove is formed in the longitudinal direction, which is formed in a saddle shape of a mold and includes a ball traveling surface 24 that holds the ball 70 from the outside inside both arm portions of the saddle shape. .

  The hook-shaped arm 23a and the hook-shaped arm 23b are formed by bending both longitudinal ends of the metal elongated plate of the inner member 60, and pair with the hook-shaped arms 22a and 22b of the respective outer members. Thus, the ball running surface 26 that holds the ball 70 from the inside is formed.

  The ball running surface 24 of the outer member is formed on both arms 22 a and 22 b of the outer member 20. The ball 70 is held in the raised arm portion and the inner member 60 is inserted into the outer member 60 via the ball 70. The ball running surface 24 formed of a semicircular concave groove is formed so that can be slidably mounted.

  The ball running surface 26 of the inner member is formed by bending both ends in the longitudinal direction of the metal elongated plate of the inner member 60 and is configured to hold the ball 80 in pairs with the ball running surface 24 of each outer member. .

The mounting hole 30 is a round hole drilled at an arbitrary position on the upper bottom surface of the outer member 20, and has a configuration in which a hole having a size corresponding to a screw diameter or a locking tool used for installation is drilled. It is. In the present embodiment, one mounting hole is provided at the center position on the line orthogonal to the longitudinal direction of the slide rail. However, the mounting hole 30 has an arbitrary size depending on the length or width of the slide rail to be employed. The number of holes can be set, and is not limited to the position / shape / number of holes shown in this embodiment.

Further, the mounting hole 30 may be a round hole similar to the round hole formed at an arbitrary position on the lower bottom surface of the inner member 60.
The mounting hole provided in the small slide rail may be smaller than the diameter of the hole provided in the normal size slide rail, but is often relatively large in comparison with the overall size. In addition, it is necessary to secure a certain size of the screw used in consideration of the tightening torque. Therefore, since the screw and the mounting hole are relatively larger than the rail width, when the slide rail is attached to the fixed side or the moving side with the screw, the rail may be deformed if it is tightened firmly and firmly. Further, the small slide rail has a small plate thickness itself, and it is necessary to tighten the screw firmly to secure the standard tightening torque, and the conventional product may be deformed at the time of tightening.

  The elongate holes 40 are a pair of elongate holes formed so as to sandwich the attachment hole in the vicinity of the attachment hole of the outer member 20 of the slide rail, and are formed along the longitudinal direction of the slide rail and extend to both ends. A hem 42 is provided. The elongated hole has a configuration in which the bottoms of both ends of a substantially mountain shape with a flat top are extended along the longitudinal direction of the slide rail. The shape of the elongated hole is the above-described shape in this embodiment, but various shapes such as a shape that does not extend a mountain-shaped hem can be adopted as long as distortion due to addition at the time of attachment can be prevented. However, the present invention is not limited to this embodiment.

Further, the elongated hole 40 has a structure that is formed in the vicinity of the mounting hole of the inner member 60 with the same configuration as the outer member 20.
The mounting hole is inside the slotted elongated hole 40 part, and only the inner part of the slotted hole is deformed by tightening, so that the shape of the running surface in the longitudinal direction of the outer member and inner member, which are slide rail bodies, is obtained. The deformation of can be effectively avoided and the influence on the straight traveling performance can be eliminated.

  The convex recess 50 is perpendicular to the longitudinal direction of the slide rail so as to connect the extending skirts 42 of both the elongated holes 40 formed so as to sandwich the mounting holes drilled in the vicinity of the mounting holes on the upper bottom surface of the outer member. It is formed in the direction. The convex recessed part 50 is formed in the circular arc shape centering on an attachment hole. The inner surface of the upper bottom surface of the outer member is formed by embossing or half-cutting so that a convex portion is formed.

  Further, the convex recess 50 is formed so as to connect the extending skirts 42 provided in both of the elongated holes 40 drilled in the vicinity of the mounting hole on the lower bottom surface of the inner member 60, and the inner member 60 in the same manner as described above. It is formed by embossing or half punching so that convex portions are formed on the inner surface of the lower bottom surface.

  The inner member 60 is a member attached to the movable side such as a door, a drawer (drawer), a movable shelf, etc., and is formed into a substantially U-shaped cross section by bending both longitudinal ends of the cross-section of the metal elongated plate. Is done. The inner member 60 is housed in the outer member 20. This is a configuration in which the outer member 20 is slidably fitted via the balls 70 held by the hook-shaped arms 23a and the hook-shaped arms 23b.

  The balls 70 are metal hard spheres, and a plurality of circular cutout holes provided in extending portions on both sides of a ball retainer 80 formed by bending a flat plate are arranged in parallel in the sliding direction of the slide rail. Along the outer member 20 and the inner member 60, the outer member 20 and the inner member 60 are rotatably held.

  The ball retainer 80 is a member that holds a ball in a slide rail in a state where the ball can be rotated. The ball retainer 80 has a shape in which a flat plate is formed into a U-shaped cross section and an extending portion is formed by folding a side edge in a longitudinal direction at a right angle. The extended portion is continuously provided with a circular cutout hole for holding the ball. By interposing a plurality of balls 70 in a rotatable manner, the inner member is slidably held in the outer member. One or more ball retainers 80 may be held between the outer member 20 and the inner member 60 in some cases.

Between the members of the slide rail outer member (or inner member), in which the elongated hole 40 and / or the convex and concave portion 50 can reciprocate a heavy door or drawer with a small force. There is a characteristic that it is possible to efficiently prevent a shortage of generated tightening torque or deformation due to firm tightening, and to make the slide rail move smoothly.
The straightness of the slide rail may be hindered by factors such as the vibration, rotation, and dynamic load of moving objects, suspended doors and drawers, but it is more accurate when the tightening torque is sufficient. Straightness is guaranteed.
In addition, since it can be used with the proper shape designed after installation, wear on each sliding surface can be effectively suppressed, durability can be greatly improved, and it can withstand long-term use. It is possible to provide a slide rail that can be used. Furthermore, since it is possible to keep the load on the metal surface to a minimum by not causing distortion on the metal surface, the metal surface is also resistant to corrosion.

In the present embodiment shown in the figure, the elongated hole 40 and the convex recess 50 are formed in the outer member. However, it can be formed in the inner member in the same manner, and is formed in both the outer member and the inner member. It is also possible. In this embodiment, both the elongated hole 40 and the convex recess 50 are formed in the outer member. However, the tightening torque such as mounting screws necessary for the sliding object is released to prevent the slide rail from being distorted. If possible, a configuration in which only the elongated hole 40 is formed, or a configuration in which only the convex recess 50 is provided can be appropriately employed. Therefore, the positions, numbers, and shapes of the elongated holes 40 and the convex and concave portions 50 are not limited to the mode shown in this embodiment.

10 Slide rail 20 Outer member 22a, 22b Outer member saddle-shaped arm 23a, 23b Inner member saddle-shaped arm 24 Outer member ball running surface 26 Inner member ball running surface 30 Mounting hole 40 Elongated hole 42 Extending skirt 50 Convex recess 60 Inner member 70 Ball 80 Ball retainer

Claims (2)

An outer member having a ball running surface formed of a semicircular concave groove on both arm portions having a substantially C-shaped cross section, a ball, and a ball running surface formed of a semicircular concave groove raised to a substantially U-shaped cross section In a slide rail comprising an inner member formed with a ball retainer that rotatably holds the ball in the outer member,
In order to prevent distortion of the slide rail caused by tightening screws and other fixtures when mounting the slide rail, in the longitudinal direction of the slide rail in the vicinity of the mounting hole drilled in the upper bottom surface of the outer member or the lower bottom surface of the inner member A slide rail for tightening deformation, characterized in that an elongated hole is bored along. The unevenness according to claim 1, wherein the outer member is embossed in the direction perpendicular to the longitudinal direction of the slide rail or half-punched in the vicinity of the mounting hole drilled in the upper bottom surface of the outer member or the lower bottom surface of the inner member. The tightening / deformation-compatible slide rail according to claim 1, wherein a portion is formed.