JP6752051B2 - Slide rail - Google Patents

Description

The present invention does not completely move a drawer portion of furniture or the like connected to a slide rail, or a moving side member such as a slide shelf such as a display shelf from a drawer state (slide fully open state) to a storage position (final storage position). However, when it is moved to a predetermined position, it is automatically drawn into the fixed side member such as the furniture body, and the rebound of the moving side member that occurs when the moving side member is vigorously moved to the fixed side member. It relates to a slide rail having a retracting function for preventing or inadvertently popping out a moving side member from a fixed side member during transportation, an earthquake, or the like.

When storing a moving side member such as a drawer in a fixed side member such as a furniture body, if the moving side member is vigorously stored, the moving side member may not be completely stored or the moving side member may not be completely stored due to the rebound at the time of storage. It may not be completely stored from the beginning, and when the furniture is being transported or in the event of an earthquake, the drawers, etc. may pop out from the fixed side members, causing the furniture to be dropped or overturned during transportation. Was the cause of the inconvenience.
In order to solve this problem, several types of slide rails having a retracting function are provided, which automatically retract the moving side member to a fixed side member such as a furniture body when the moving side member is stored to a predetermined position.

As one of them, a retracting member is provided on either one side of the fixed side member or the moving side member, a pulling force passive member is provided on the other side corresponding to the retracting member, and the moving side member is a fixed side member of the retracting member. The pull-in force passive member has a pressure contact mechanism that elastically press-contacts a part of the pull-in force passive member when the final predetermined position is approached. On the other hand, it constitutes a guide inclined surface that changes the pulling force in the direction of the final predetermined position. (See Patent Document 1)

In this case, the pull-in force passive member must be attached to either the fixed-side member or the moving-side member, which is a factor leading to an increase in cost.
Further, since the fixed side member or the moving side member and the pulling force passive member are not integrated, a slight step is generated in the connecting portion, and when the pulling member passes through this step, a discontinuous discomfort is felt during sliding. It was also the cause of the occurrence.
Further, since the retractable member moves in contact with the convex curved surface, it easily swings in the left-right direction during sliding, which not only impairs the smooth continuity of the sliding operation, but also causes the roller of the retractable member to come off. It was also.

On the other hand, as a slide rail having a retracting function that can be provided at low cost, a leg that inclines from the slightly inner inner surface of one ball sliding groove of the moving side rail toward the end side inner surface of the other ball sliding groove. By providing a retractable member made of a wire spring having a wire spring on the moving side rail so that the elastic leg comes into contact with the ball sliding groove of the fixed side rail while the moving side rail is sliding, the moving side rail is moved. When the fixed position is reached, the leg comes into contact with the end of the fixed side rail on the sliding direction side, and the moving side rail is automatically moved to the storage position. (See Patent Document 2)
In this case, since the wire spring comes into contact with the corner of the end of the ball sliding groove of the fixed side rail, not only the frictional resistance is large and the smooth sliding operation is impaired, but also either the fixed side rail or the wire spring There was a problem with durability, such as wear on the one with lower hardness.

Further, as another example, it is a pull-in mechanism having at least a first slide member and a second slide member and attached to the second slide member, and the pull-in mechanism has a slot for guiding an actuator (engagement body). The actuator is attached to the housing so that it can move in response to the force generated by the spring and slides between the first and second positions along the slot. Can accumulate energy in the spring and remain engaged in the first position.

Then, when the pulled out first slide member is pulled in, when the first slide member approaches the closing position, the first slide member engages with the actuator and continues to move toward the closing position, so that the actuator ( The engaging body) is disengaged from the first position, whereby the energy-accumulating spring slides the actuator (engaging body) and the engaged first slide member along the slot to the second position where the slide is closed.
On the other hand, when the first slide member is pulled out with respect to the second slide member, the first slide member moves the actuator (engagement body) from the second position to the first position, and the actuator (engagement body) springs. Energy is stored in and engaged in the first position. The first slide member is also provided so as to be detached from the actuator. (See Patent Document 3)

In this case, since the first slide member is pulled into the second slide member by the tensile force of the spring, the first slide member is pulled out against the tensile force of the spring (while accumulating the tensile energy in the spring). When the actuator (engagement body) is engaged at the first position, the first slide member is disengaged from the actuator, so that the pull-out force is suddenly reduced, the pull-out speed is increased, and the stored items, exhibits, etc. are overturned. , There was a danger of dropping it.
Further, when the first slide member is pulled out, the engaged state of the actuator (engaged body) at the first position is unexpectedly disengaged, and when the actuator (engaged body) is moved to the second position, the retracting function is performed. Doesn't work. In order to restore this state, it was necessary to manually apply a large force, push in the first slide, and forcibly engage the first slide member with the actuator (engagement body).

In addition, the moving side rail is a slide rail that can be constructed compactly with a simple structure, has excellent durability, can be manufactured at low cost with smooth sliding force, does not cause any trouble, and has a retracting function that is easy to operate. At the rear end, a pull-in member having a pressure welder that elastically press-contacts the ball sliding groove formed on the bent edge of the fixed-side rail is provided, and the ball sliding groove of the fixed-side rail that the pressure welder press-contacts. From the predetermined position at the rear end, the bent edge of the fixed side rail is sequentially inclined in the direction of pulling in the moving side rail, and a lead-in guide path that has the same shape as the ball sliding groove of the fixed side rail and is continuous with the ball sliding groove is provided. The retractable member is integrally formed with the bent edge, the tip of the retractable member is rotatably pivotally fixed to the moving side rail, and the pressure welder provided at the rear end is elastically pressure-welded to the ball sliding groove of the fixed side rail. A rotating arm to which a rotating force is applied and a spring for applying a rotational force to the rotating arm are provided. (See Patent Document 4)

In this case, since the rotating arm is directly anchored to the moving side rail, the rotatable angle of the rotating arm is the vertical movement range in which the pressure welder provided at the rear end can press contact with the fixed side rail. Limited to. That is, since the vertical movement distance of the pressure welder is small (since the rotatable angle of the rotating arm is small, the movement distance of the pressure connector in the slide direction is also small), the pull-in stroke (distance from the start of pulling to the completion of pulling). It is necessary to make the lead-in guideway longer in order to increase the size. That is, if the pull-in guide path is made long, not only the pull-in force is weakened, but also the slide stroke excluding the pull-in stroke is shortened. The overall length of the slide rail must be increased to maintain the slide stroke. Therefore, if the length of the entire slide rail becomes long, it cannot be attached in a predetermined place, resulting in abandonment of the retracting function.

JP-A-2007-195754 Japanese Unexamined Patent Publication No. 2008-194381 Japanese Patent No. 4394327 Japanese Unexamined Patent Publication No. 2011-224289

In view of the above problems, the present invention provides a slide rail having a pull-in function, which has a simple structure, does not affect the length of the slide rail, can have a long pull-in stroke, and does not reduce the pull-in force. Is the subject.

In order to solve the above problems, where the present invention is configured as the first means, a retracting member having a pressure welder that elastically press-contacts the bent edge of the fixed-side rail is provided at the rear end of the moving-side rail. In a slide rail having a pull-in function in which a pull-in guide path is formed integrally with the bent edge of the fixed-side rail in the direction in which the moving-side rail is pulled in from a predetermined position at the rear end of the bent edge of the fixed-side rail to which the pressure welder is pressed. The pull-in member is attached to the moving side rail, and at least a part thereof is a connecting support member projecting to the outside of the storage side end portion of the moving side rail, and one end thereof is an end portion on the protruding side of the connecting support material. , A rotating arm that is rotatably pivotally stopped by a protruding portion that protrudes in the direction opposite to the direction in which the lead-in guide path is deformed, and a pressure welder rotatably provided at the other end, and a rotating arm that rotates is constructed from a spring which imparts while elastically pressed against the bent edge of the pressers fixed rail, with swing arm is to rotation in a substantially vertical orientation from a substantially horizontal position, pulling member is pulling member connecting support member is than also attached to the moving rail by being attached to the inner surface or the outer surface of the substrate between the pair of upper and lower bent edge of at least the movable rail.

In order to solve the above problems, the present invention is configured as the second means. In addition to the configuration as the first means, the lead-in guide path is a circle in the direction in which the pressure welder is in pressure contact and the moving side rail is pulled in. It is formed in an arc shape.

According to the first means of the present invention, the other end of the rotating arm, which is provided with a pressure welder rotatably at one end, protrudes vertically from the moving side rail of the connecting support member. Since it is rotatably pivotally stopped at the end on the protruding side, the rotating arm can be rotatably arranged in a range from a substantially horizontal posture to a substantially vertical posture, so that the pressure welder can be moved up and down. Since it can be moved sequentially from the direction to the slide direction, even if the pull-in guide path is short in the slide direction, the pull-in stroke can be configured to be long, so that the required slide stroke can be obtained without increasing the length of the entire slide rail. Obtainable.

According to what was configured as the second means of the present invention, in addition to the effect of being configured as the first means, the lead-in guide path is formed in an arc shape in the direction in which the pressure welder is in pressure contact and the moving side rail is pulled in. Therefore, the pulling force can be smoothly strengthened with a simple structure.

It is a perspective view of the shortest contracted state of the slide rail of this invention. It is a perspective view of the maximum extension state of the slide rail of this invention. It is an enlarged perspective view of the rear end portion of the slide rail in the shortest contracted state. It is an enlarged perspective view of the rear end portion of a slide rail in the middle of pulling out. It is an exploded perspective view of a retracting member. It is a basic structural sectional view of the slide rail of this invention. It is a front view from the fixed side rail side of the rear end part in a reduced state of a slide rail. It is a front view from the rear end side in the shortest contracted state of a slide rail. It is a perspective view of the shortest contracted state of the slide rail of the 2nd Example of this invention. It is a right side view of the rear end portion of the slide rail of the 2nd Example of this invention. It is a left side view of the rear end portion of the slide rail of the 2nd Example of this invention. It is a front view from the rear end side in the shortest reduced state of the slide rail of the 2nd Embodiment of this invention. It is a basic structural sectional view of the slide rail of the 2nd Example of this invention. It is a right side view of the rear end portion in the middle of pulling out the slide rail of the 2nd Example of this invention.

A retractable member having a pressure welder that elastically press-contacts the bent edge of the fixed-side rail is provided at the rear end of the moving-side rail, and the rear end of the fixed-side rail bent edge that the press-weld member press-contacts moves from a predetermined position. In a slide rail having a pull-in function in which a pull-in guide path is formed integrally with the bent edge of the fixed side rail in the pull-in direction of the side rail, the pull-in member is attached to the moving side rail, and at least a part of the sliding member is stored in the moving side rail. A connection support member that projects outward from the side end, and one end that is rotatably pivotally fixed to the projecting end of the rolling support, and a pressure weld that is rotatably provided at the other end. It is composed of a moving arm and a spring that applies rotational power to the rotating arm, and the rotating arm rotates from a nearly horizontal position to a nearly vertical position while the pressure welder elastically presses against the bent edge of the fixed side rail. The lead-in guide path is formed in an arc shape in the direction in which the pressure welder press-contacts and pulls in the moving side rail.

The basic configuration of the slide rail of the first embodiment will be described with reference to FIGS. 1 and 6.
The slide rail 100 includes a fixed side rail 1 connected to the inner surface of a main body of furniture or the like with a connecting screw or the like, and a plurality of balls 30 rotatably held by a fixed side ball holding plate 3 with respect to the fixed side rail 1. The intermediate rail 4 slidably provided via ..., And the intermediate rail 4 slides via a plurality of balls 50 ... rotatably held by the moving-side ball holding plate 5. It is composed of a freely provided moving-side rail 2, a pull-in member 6 attached to the rear end of the moving-side rail 2, and a pull-in guide path 7 provided on the fixed-side rail 1 corresponding to the pull-in member 6. Has been done.
Hereinafter, in FIG. 1, the diagonally upward direction on the left side will be described as the drawer side (tip side), and the diagonally downward direction on the right side will be described as the storage side (rear end side).

The fixed side rail 1 includes upper and lower bent edges 11 and 11 having ball guide grooves in the inner surface longitudinal direction (sliding direction) formed by bending both short ends of a metal elongated strip in an inward arc shape. , The cross section is substantially C-shaped from the substrate 12, and a part of the substrate 12 protrudes in the moving side rail 2 direction at the front end on the drawer side, and the fixed side ball holding plate 3, the intermediate rail 4, the moving side ball holding plate 5, etc. The moving side rail 2 is stopped in a state where the moving side rail 2 is pulled out to the maximum, and the substrate 12 is attached to the moving side rail 2 at the rear end of the storage side and the rail extension stopper (not shown) that makes the slide rail 100 the maximum extension. A rail shortening stopper 130 is formed that projects in the direction and stops the moving side rail 2 in the most retracted state via the intermediate rail 4 or the like to bring the slide rail 100 into the shortest reduced state.

The moving side rail 2 has almost the same length as the fixed side rail 1, and is formed by bending both short ends of a metal elongated strip in an inward arc shape and forming a ball in the inner surface longitudinal direction (sliding direction). The upper and lower bent edges 21 and 21 having guide grooves and the substrate 22 are formed in a substantially C-shaped cross section facing the fixed side rail 1.
Then, a stopper for storing the moving side rail (not shown) that protrudes from the end of the board 22 in the direction of the fixed side rail 1 and comes into contact with the end of the intermediate rail 4 when the moving side rail 2 is stored. ) Is formed, and a rear end stopper (not shown) of the moving side rail that comes into contact with the rear end of the moving side ball holding plate 5 in the maximum extended state of the slide rail 100 is formed at the storage side end of the substrate 22. ing.

The intermediate rail 4 is formed of a strip-shaped metal plate so as to be insertable between the fixed side rail 1 and the moving side rail 2.
That is, the fixed side vertical bent edges 42, 42 and the fixed side substrate 41 having ball guide grooves in the outer surface longitudinal direction (sliding direction) by bending both ends of the short side of the metal elongated strip plate in an outward arc shape. The fixed-side intermediate rail formed in a substantially C-shaped cross section and the fixed-side intermediate rail are symmetrical with each other, and both ends of the metal elongated strip are bent in an outward arc shape to form an outward arc shape. It consists of a moving-side intermediate rail formed in a substantially C-shape in cross section consisting of moving-side vertical bent edges 43, 43 having ball guide grooves in the sliding direction) and moving-side substrate 40, and consists of a fixed-side substrate 41 and a moving-side substrate 40. Is fixed with a slight shift in the sliding direction, has a substantially I-shaped cross section, and is formed to have a length shorter than that of the fixed side rail 1 and the moving side rail 2.

Then, it protrudes toward the fixed side rail 1 side at the rear end portion of the fixed side substrate 41 of the intermediate rail 4, and when the moving side rail 2 is pulled out, it comes into contact with the rear end portion of the fixed side ball holding plate 3 and the moving side rail 2 An intermediate rail rear end stopper (not shown) that abuts on the inner surface of the stopper 130 when the fixed side rail 1 is shortened is formed, and projects toward the moving side rail 2 side at the front end portion of the moving side substrate 40. When the moving side rail 2 is pulled out, the front end portion of the moving side ball holding plate 5 comes into contact with the inner surface, and when the moving side rail 2 is stowed, the inner surface of the moving side rail retracting stopper comes into contact with the intermediate rail front end stopper (FIG. Not shown.) Is formed.

The fixed-side ball holding plate 3 is a strip metal plate that is shorter than the intermediate rail 4 by a predetermined size, and has a size of a substrate 31 that can be inserted between the fixed-side rail 1 and the intermediate rail 4, and the fixed-side rail 1 and the intermediate rail 4. The vertical protruding edges 32, 32 located between the upper and lower bent edges 11, 11, 42, 42 are formed in a substantially U-shaped cross section, and the balls are formed at several points in the longitudinal direction (sliding direction) of the upper and lower protruding edges 32, 32. 30 ... Are rotatably held.

The moving-side ball holding plate 5 is a strip metal plate that is made shorter than the intermediate rail 4 by a predetermined size, and has a size that can be inserted between the moving-side rail 2 and the intermediate rail 4. The moving-side rail 2 and the intermediate rail 4 The ball 50 is formed in a substantially U-shaped cross section from the upper and lower protruding edges 52 and 52 located between the upper and lower bent edges 21, 21, 43, and 43, and is formed at several points in the longitudinal direction (sliding direction) of the protruding edges 52 and 52. ... is held rotatably.

The slide rail 100 is configured as described above, and when the moving side rail 2 is most housed in the fixed side rail 1 (shortest reduced state), the intermediate rail rear end stopper is the front surface of the fixed side rail 1 when the rail is shortened. The moving-side rail storage stopper of the moving-side rail 2 abuts on the front surface of the intermediate rail front end stopper, and the pull-in member 6 is located at the storage-side end of the pull-in guide portion 7.

When the moving side rail 2 is pulled forward from this state, the moving side ball holding plate 5 moves by a distance of half the moving distance of the moving side rail 2, and the moving side ball holding plate 5 moves by 2 minutes of the moving distance of the intermediate rail 4. Since the fixed side ball holding plate 3 moves by the distance of 1, the front end of the moving side rail rear end stopper abuts on the rear end of the moving side ball holding plate 5, and the front end of the moving side ball holding plate 5 is the intermediate rail 4. The front end of the intermediate rail rear end stopper of the intermediate rail 4 abuts on the rear end of the fixed side ball holding plate 3, and the front end of the fixed side ball holding plate 3 abuts on the fixed side rail. When the rail of 1 is extended, it comes into contact with the rear surface of the stopper, the moving side rail 2 and the intermediate rail 4 are stopped, and the slide rail 100 is in the maximum extended state.

The lead-in guide path 7 has an upper bent edge 11 that projects rearward from the substrate 12 of the fixed side rail 1 in the direction in which the moving side rail 2 is pulled in from a predetermined position on the rear end side of the upper bent edge 11 of the fixed side rail 1. The shape is sequentially deformed into an arc shape, has the same cross-sectional shape as the upper bent edge 11 of the fixed side rail 1, and is formed continuously with the upper bent edge 11 and integrally with the upper bent edge 11.

That is, the upper bent edge 11 of the fixed side rail 1 is left, and the rear end portion of the substrate 12 and the lower bent edge 11 is cut off by a predetermined dimension in the front-rear direction to form the cut-off portion 71 for processing, and then remains. The upper bent edge 11 of the fixed side rail 1 is deformed into a quarter arc shape, and has the same shape as the outer shape of the upper bent edge 11 of the fixed side rail 1 and is continuous with the rear end of the upper bent edge 11. It is formed integrally with the upper bent edge 11.

In the embodiment, the lead-in guide path 7 is formed in a quarter arc shape with the height of the substrate 12 as the radius according to the height dimension of the fixed side rail 1 (radius of curvature). If is increased, the arc length becomes longer, so that the pulling stroke becomes longer, but on the other hand, if the urging force of the spring 63 of the pulling member 6 described later is constant, the pulling speed becomes slower (the pulling force becomes weaker).
On the other hand, if the arc shape has a small radius (radius of curvature), the arc length is shortened, so that the pull-in stroke is also short, but on the other hand, if the urging force of the spring 63 of the pull-in member 6 described later is constant, the pull-in speed is high. .. (The pulling force becomes stronger.)

The pull-in member 6 is attached to the inner surface of the substrate 22 of the moving side rail 2, and one end is connected to a laterally substantially L-shaped connecting support member 61 whose end projectes outward in the upward direction of the moving side rail 2. A rotating arm 62 that is rotatably pivotally stopped at the upper end of the protruding side of the support member 61 and has a pressure welder 8 rotatably provided at the other end, and a spring that applies rotational power to the rotating arm 62. It is composed of 63.

The connecting support member 61 is connected to the inner surface of the rear end portion of the board 22 of the moving side rail 2, and the connecting protrusion 611 and the connecting protrusion 611 whose rear end projectes rearward from the storage side end of the board 22. A connecting pivot 610 is attached to the upper end of the rotating arm support projecting piece 612, which protrudes upward from the rear end and has an upper end formed from a rotating arm support projecting piece 612 located outside the moving side rail 2. A hole 613 and a spring locking projection 614 for locking one end of the spring 63 are provided.

The rotating arm 62 has an inner cylinder 600 and a spring 63 whose one end fits into the mounting hole 613 of the rotating arm support protrusion 612 to fit the connecting pivot 610, the connecting pivot 610, and the spring 63. One end is rotatably connected to the other end, and a pressure welder 8 is rotatably provided at the other end. The length is formed to be slightly longer than between the upper and lower bent edges 21 and 21 of the moving side rail 2 and rotates. At the upper end of the arm 62, a spring end locking projection 621 for locking the other end of the spring 63 is formed corresponding to the spring locking projection 614.

As the spring 63, a wound spring is adopted in the embodiment, one end is locked to the spring locking projection 614, the other end is locked to the spring end locking projection 621, and the respective ends approach each other. Being urged. That is, the rotating arm 62 is in a state of being urged in the direction in which the rear end portion rotates downward in FIG. 4 (clockwise in FIG. 3).

In the embodiment, the pressure welder 8 is formed of a rotating roller having an outer shape that matches the outer shape of the upper bent edge 11 (pull-in guide path 7) of the fixed side rail 1, and is formed by a rotary mounting shaft 81 and a connecting hole 620. , Is rotatably connected to the rotating arm 62.
That is, if the urging force of the spring 63 is constant, the longer the length from the pivot 610 (rotation center point) to the pressure welder 8 (center of the rotating roller), the more the pressure welder 8 presses against the lead-in guide path 7. The force becomes weaker and the pull-in speed becomes slower.

The present invention is configured as described above, and in the shortest contracted state of the slide rail 100 (the state shown in FIGS. 1, 3, 7, and 8), the pressure welder 8 is attached to the lower end of the lead-in guide path 7 by the spring 63. Since the moving side rail 2 is elastically pressure-welded and always urged to move toward the storage side, the moving side rail 2 is not inadvertently pulled out to the pull-out side, and the slide rail 100 is in the shortest contracted state. Can be reliably maintained.

Then, when the moving side rail 2 is pulled out from this state, the rotating arm 62 moves forward together with the moving side rail 1 while rotating counterclockwise in FIG. 3 against the urging force of the spring 63. The pressure welder 8 is located at the rear end of the outer surface of the upper bent edge 11 of the fixed side rail 1 from the guide path 7. At this time, the pressure welding direction of the pressure welding element 8 moves forward with a resistance smaller than the initial resistance due to the shape change of the lead-in guide path 7, and then the pressure welding element 8 is folded upward on the fixed side rail 1. The moving side rail 1 is pulled out to the maximum extended state in a state where the resistance due to the urging force of the spring 63 is almost eliminated at the curved edge 11.

That is, at the beginning of pulling out the moving side member, the user tends to pull out with a strong feeling, and by making the pull-in guide path 7 into an arc shape, it is only possible to obtain a smooth sliding feeling. Since the guide path 7 and the upper bending edge 11 of the fixed side rail 1 have the same shape and are continuously and integrally formed, the pressure welder 8 has an upper bending edge from the lead-in guide path 7 without a slight step. There is no sense of incongruity at the stage of moving to 11 (the same applies to the reverse stage).
Further, since the pressure welder 8 is in pressure contact with the arc-shaped downward end portion in the shortest contracted state of the slide rail 100, the shortest contracted state of the slide rail 100 can be reliably maintained.

Then, when the moving side rail 2 is pushed in from the maximum extended state of the slide rail 100 (when the moving side member connected to the moving side rail 2 is stored), the pressure welder 8 becomes the fixed side rail 1. It is located in the lead-in guide path 7 from the rear end of the upper bending edge 11, and the moving side rail 2 is automatically pulled in by the urging force of the spring 63.
Then, the urging force of the spring 63 weakens as both ends of the spring approach each other in sequence, but the storage-side end of the lead-in guide path 7 has a shape that protrudes downward, so that the pressure welding direction of the pressure welder 8 slides. It becomes the sliding direction of the rail 100, compensates for the weakening of the urging force of the spring 63, and surely maintains the shortest contracted state.

Further, since the rotating arm 62 is rotatably arranged in a range from a substantially horizontal posture to a substantially vertical posture, the pressure welder 8 can be sequentially moved from the vertical direction to the sliding direction, so that the pull-in guide path 7 is provided. Since the pull-in stroke can be configured to be long even if it is short in the slide direction, the required slide stroke can be obtained without increasing the length of the entire slide rail.

Next, reference numeral 100 described with reference to FIGS. 9 to 14 of the second embodiment indicates the slide rail of the second embodiment of the present invention, and the slide rail 100 includes the fixed side rail 1, the ball 50, and so on. The moving side rail 2 that is slidable with the fixed side rail 1 via the moving side ball holding plate 5 that is rotatably held, and the retracting member 6 attached to the rear end of the moving side rail 2 are retracted. Corresponding to the member 6, it is composed of a lead-in guide path 7 provided on the fixed side rail 1.
Hereinafter, in FIG. 9, the diagonally downward direction on the left side will be described as the drawer side (tip side), and the diagonally upward direction on the right side will be described as the storage side (rear end side).

The fixed side rail 1 is formed from the upper and lower bent edges 11, 11 and the substrate 12 having ball guide grooves in the longitudinal direction (sliding direction) of the outer surface by bending both short ends of a metal elongated strip plate in an outward arc shape. The cross section is formed in a substantially C shape.
Then, after the ball holding plate, the rear end portion of the moving side ball holding plate 5 comes into contact with the moving side rail 2 in a state where the moving side rail 2 is pulled out by projecting a part of the substrate 12 from the pulling side front portion in the moving side rail 2 direction. An end stopper (not shown) is formed.
Further, the rear end portion of the upper bent edge 11 of the fixed side rail 1 is bent in an arc shape corresponding to the pulling member 6, and a pulling guide path 7 integrally continuous with the upper bent edge 11 is formed. There is.

The moving side rail 2 has almost the same length as the fixed side rail 1, and the ball is formed in the inner surface longitudinal direction (sliding direction) formed by bending both short ends of a metal elongated strip in an inward arc shape. The upper and lower bent edges 21 and 21 having guide grooves and the substrate 22 are formed in a substantially C-shaped cross section.
Then, at the pull-out side end of the board 22, a moving-side rail storage stopper that protrudes in the fixed-side rail 1 direction and comes into contact with the front end of the fixed-side rail 1 when the moving-side rail 2 is stored is formed on the board 22. A rear end stopper (not shown) of the moving side rail that comes into contact with a part of the moving side ball holding plate 5 in the maximum extended state of the slide rail 100 is formed at the storage side end portion.

The moving-side ball holding plate 5 has a size that can be inserted between the fixed-side rail 1 and the moving-side rail 2 with a strip metal plate, and has a length of about one-third that of the fixed-side rail 1. From the upper and lower bent pieces 52, 52 connected to the upper and lower ends of the substrate 51 and the upper and lower ends of the substrate 51 protruding between the upper and lower bent edges 11, 11, 21, and 21 of the fixed side rail 1 and the moving side rail 2. Therefore, a plurality of balls 50 ... Are rotatably held at several positions in the sliding direction of the upper and lower bent pieces 52, 52.

The lead-in guide path 7 has an upper bent edge 11 that projects rearward from the substrate 12 of the fixed side rail 1 in the direction in which the moving side rail 2 is pulled in from a predetermined position on the rear end side of the upper bent edge 11 of the fixed side rail 1. The shape is sequentially deformed into an arc shape, has the same cross-sectional shape as the upper bent edge 11 of the fixed side rail 1, and is formed continuously with the upper bent edge 11 and integrally with the upper bent edge 11.

That is, the upper bent edge 11 of the fixed side rail 1 is left, and the rear end portion of the substrate 12 and the lower bent edge 11 is cut off by a predetermined size in the front-rear direction to form the cut-off portion 71 for processing, and then remains. The upper bent edge 11 of the fixed side rail 1 is deformed into an arc shape to have the same shape as the outer shape of the upper bent edge 11 of the fixed side rail, and the upper bent edge 11 is continuous with the rear end of the upper bent edge 11. It was formed integrally with.

The pull-in member 6 is attached to the outer surface of the substrate 21 of the moving side rail 2, and has a connecting support member 61 whose storage side end projectes upward and outward of the moving side rail 2, and one end of which projects the connecting support member 61. It is composed of a rotating arm 62 that is rotatably pivotally stopped at the end on the side and has a pressure welder 8 rotatably provided at the other end, and a spring 63 that applies rotational power to the rotating arm 62. ..

The connecting support member 61 projects from the upper end of the storage side end of the connecting board 611 to the connecting board 611 connected to the outer surface of the storage side end of the board 22 of the moving side rail 2 toward the storage side. The end is formed from the rotating arm support protrusion 612 located on the outside of the moving side rail 2, the rotating arm support protrusion 612 is formed with a mounting hole for the pivot 610, and the pull-out side of the connecting substrate 611 is formed. , A spring holding protrusion 614 for holding one end of the spring 63 is provided.

One end of the rotating arm 62 is rotatably connected to the hole of the rotating arm support protrusion 612 via a pivot 610, and one end is rotatably provided with a pressure welder 8 at the other end. A spring that is formed to have a length slightly longer than between the upper and lower bent edges 21 and 21 of the side rail 2, and that holds the other end of the spring 63 at the slightly lower end of the rotating arm 62 in response to the spring holding protrusion 614. The end holding protrusion 621 is formed.

A tension spring is adopted as the spring 63 in the second embodiment, one end is held by the spring holding protrusion 614, the other end is held by the spring end holding protrusion 621, and the spring 63 is biased in the direction in which the respective ends approach each other. Has been done. That is, the rotating arm 62 is in a state of being urged in the direction in which the storage side end portion rotates downward in FIG. 14 (counterclockwise direction in FIG. 11).

In the embodiment, the pressure welder 8 is formed of a rotating roller having an outer shape that matches the outer shape of the upper bent edge 11 (pull-in guide path 7) of the fixed side rail 1, and is formed by a rotary mounting shaft 81 and a connecting hole. It is rotatably connected to the rotating arm 62.

The second embodiment is configured as described above, and in the shortest contracted state of the slide rail 100 (FIGS. 9, 10, 11, 12), the pressure welder 8 is elastically attached to the lower end of the lead-in guide path 7 by the spring 63. Since the moving side rail 2 is always pressure-welded and urged to move toward the storage side, the moving side rail 2 is not inadvertently pulled forward, and the shortest contracted state of the slide rail 100 is ensured. Can be maintained at.

Then, when the moving side rail 2 is pulled out from this state, the rotating arm 62 moves forward together with the moving side rail 1 while rotating counterclockwise in FIG. 10 against the urging force of the spring 63. The pressure welder 8 is located at the rear end of the outer surface of the upper bent edge 11 of the fixed side rail 1 from the guide path 7. (The state shown in FIG. 14) At this time, the moving side rail 2 moves forward with a resistance smaller than the initial resistance due to the shape change of the lead-in guide path 7 in the pressure welding direction of the pressure welding element 8, and then the pressure welding element 8 Is located at the upper bending edge 11 of the fixed side rail 1, and the moving side rail 1 is pulled out to the maximum extended state with almost no resistance due to the urging force of the spring 63.

That is, at the beginning of pulling out the moving side member, the user tends to pull out with a strong feeling, and by making the pull-in guide path 7 into an arc shape, it is only possible to obtain a smooth sliding feeling. Since the guide path 7 and the upper bending edge 11 of the fixed side rail 1 have the same shape and are continuously and integrally formed, the pressure welder 8 has an upper bending edge from the lead-in guide path 7 without a slight step. There is no sense of incongruity at the stage of moving to 11 (the same applies to the reverse stage).
Further, since the pressure welder 8 is in pressure contact with the arc-shaped downward end portion in the shortest contracted state of the slide rail 100, the shortest contracted state of the slide rail 100 can be reliably maintained.

Then, when the moving side rail 2 is pushed in from the maximum extended state of the slide rail 100 (when the moving side member connected to the moving side rail 2 is stored), the pressure welder 8 becomes the fixed side rail 1. It is located in the lead-in guide path 7 from the rear end of the upper bending edge 11, and the moving side rail 2 is automatically pulled in by the urging force of the spring 63.
Then, the urging force of the spring 63 weakens as both ends of the spring approach each other in sequence, but since the storage side end of the lead-in guide path 7 has a shape that protrudes downward, the pressure contact direction of the pressure welder 8 is the slide rail 100. It becomes the sliding direction of the spring 63, compensates for the weakening of the urging force of the spring 63, and surely maintains the shortest contracted state.

Further, since the rotating arm 62 is rotatably arranged in a range from a substantially horizontal posture to a substantially vertical posture, the pressure welder 8 can be sequentially moved from the vertical direction to the sliding direction, so that the pull-in guide path 7 is provided. Since the pull-in stroke can be configured to be long even if it is short in the slide direction, the required slide stroke can be obtained without increasing the length of the entire slide rail.

As described in detail above, the present invention can be used by being attached between a main body of furniture and the like, between a display shelf main body and a shelf board, and further between a copying machine main body and a paper feed tray, and can be used in a wide range. It is available.

1 Fixed side rails 11, 11 Vertically bent edges 100 Slide rails 2 Moving side rails 21, 21 Vertically bent edges 6 Retracting members 61 Supporting members for connection
62 Rotating arm 63 Spring (winding spring)
7 Pull-in guide path 8 Pressure welder (rotary roller)

Claims (2)

A retractable member having a pressure welder that elastically press-contacts the bent edge of the fixed-side rail is provided at the rear end of the moving-side rail, and the rear end of the fixed-side rail bent edge that the press-weld member press-contacts moves from a predetermined position. In a slide rail having a pull-in function in which a pull-in guide path is formed integrally with the bent edge of the fixed side rail in the pull-in direction of the side rail, the pull-in member is attached to the moving side rail, and at least a part of the sliding member is stored in the moving side rail. A connecting support member projecting to the outside of the side end portion, and one end of the connecting support member rotating to a protruding portion protruding in the direction opposite to the direction in which the lead-in guide path is deformed. It is composed of a rotating arm that is freely pivotally stopped and a pressure welder is rotatably provided at the other end, and a spring that applies rotational power to the rotating arm, and the pressure welder elastically presses against the pull-in guide path. while, rotary arm is, as well as rotation in a substantially vertical orientation from a substantially horizontal position, retraction member, connecting support member of the pulling member, the inner surface of the substrate between the pair of upper and lower bent edge of at least the movable rail Alternatively , a slide rail characterized in that it can be attached to the moving side rail by being attached to the outer surface . The slide rail according to claim 1, wherein the lead-in guide path is formed in an arc shape in a direction in which the pressure welder is pressure-welded and the moving side rail is pulled in.

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