JP2022062279A - Slide rail with locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide rail with a locking device which can be constituted compactly with a simple structure, can be produced inexpensively owing to reduced number of components, has excellent operability and maintenance property, and can keep a locking state reliably.

SOLUTION: A locking device is composed of: an engaging member provided on a fixed-side rail, to temporarily fix sliding of a slide rail; and a locking member provided on a movable rail. The locking member is constituted of an operation member which can engage with and disengage from the engaging member and can make the movable rail slidable by disengaging operation of disengaging the engaging with the engaging member, and a base member. The base member is fitted in the movable rail so that the operation member is pivotally supported by the base member.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates mainly to a slide rail with a lock device used for display shelves, drawers, grill cookers, and the like.

Conventionally, a number of slide rail locking devices have been provided.
As a typical example thereof, as shown in Prior Art Document 1 (Patent Document 1), a fixed side rail fixed to a main body of a rack or the like, an intermediate rail slidably arranged with respect to the fixed side rail, and the like. A moving side rail slidably arranged with respect to the intermediate rail, a locking member detachably provided on the inner surface of the front end portion of the fixed side rail, and a front end portion of the moving side rail corresponding to the locking member. There is a slide rail locking device made of a locking member provided on the inner surface.
The locking device is provided on the locking member, and the locked state is maintained by locking the locking projection provided at the center of the fixed side rail in the height direction and the locking projection provided on the locking member. By rotating the operating member of the lock portion in either the vertical direction or the vertical direction, the locking projection is retracted in either the vertical direction to release the locking projection and the locking projection. It unlocks the lock.

The operation member of the lock part is rotated in either the vertical direction so that the lock device can be used for both right and left without making a right or left lock device, but it can be used from either the top or bottom of the locking projection. Since the locked state of the locking protrusion can be released, the locking projection and the locking protrusion are locked only in the vicinity of the middle portion in the height direction of the slide rail.
In the case of such a locking device, when a large load is applied to the moving side slide rail, the moving side slide rail bends downward due to the load even in the locked state of the locking device, and the locking projection and the locking projectile The locked state was sometimes released.

Japanese Patent Application Laid-Open No. 2015-229835

The present invention provides a slide rail with a locking device that can be compactly configured with a simple structure, can be manufactured at low cost with a small number of parts, has excellent workability and maintainability, and can maintain a locked state more reliably. Is the subject.

Therefore, in order to solve the above problems, the present invention is configured as the first means, mainly the fixed side rail fixed to the main body such as a rack and the fixed side rail are slidably arranged with respect to the fixed side rail. A locking member provided on the fixed side rail and a lock provided on the moving rail for temporarily fixing the sliding of the slide rail composed of the intermediate rail and the moving side rail slidably arranged with respect to the intermediate rail. In the locking device composed of the members, the locking member includes an operating member and a base member that can be engaged with and detached from the locking member and that can slide the moving rail by unlocking the locking member. The base member is fitted and attached to the moving rail so that the operating member is pivotally held by the base member.

In order to solve the above problems, the present invention is configured as the second means, in addition to the first means, the operating member is prevented from being easily detached from the base member by the detachment preventing portion. ..

According to the first means of the present invention, since the operating member is pivotally held by the base member, when the lock member is attached to the rail, the operating member is first attached to the base member and then the operating member. It is possible to attach the base member including the above to the rail, and it is not necessary to touch the operation member, the base member, and the rail at the same time, and the assembly is easy.

According to the second means of the present invention, since the detachment prevention portion prevents the lock member from being easily detached from the base member, the operation member does not fall off when the lock member is attached to the rail, and the assembly work is easy. Not only that, it can be prevented from easily coming off from the base member when operating the operating member.

Perspective view of the slide rail of the present invention in the middle of extension Basic cross section of slide rail Disassembled perspective view of the main part of the moving side rail and lock member An exploded perspective view of the main part of the moving side rail and the back side of the lock member Perspective view of the main part of the fixed side rail and the locking member Perspective view of the main part of the fixed side rail and the back side of the locking member Explanatory drawing showing a state in which the guided inclined surface of the locking projection and the guided inclined surface of the locking projection are in contact with each other. Explanatory drawing showing a state in which the moving side rail is sliding while the locking protrusion is in contact with the locking projection. Explanatory drawing of the locked state of the slide rail Explanatory drawing showing a state in which the locking protrusion moves upward of the locking projection and the locked state is released. Explanatory drawing showing a state in which the locking protrusion moves downward of the locking projection and the locked state is released. Explanatory drawing showing the contraction state of the slide rail Explanatory drawing showing the relationship between the protruding piece and the contact portion

The best mode for carrying out the present invention will be described based on examples.
First, the basic configuration of the slide rail will be described with reference to FIGS. 1 and 2.
For convenience, the vertical direction in FIG. 2 is referred to as a vertical direction, the horizontal direction is referred to as a left-right direction, the lower left side in FIG. 1 is referred to as a pull-out side, and the upper right side is referred to as a pull-in side.
The slide rail 100 includes a fixed side rail 1 connected to the inner surface of a main body such as a display shelf with a connecting screw or the like, and a plurality of balls rotatably held by a fixed side ball holding plate 3 with respect to the fixed side rail 1. An intermediate rail 4 slidably provided via 30 ... And a plurality of balls 50 ... rotatably held by the moving-side ball holding plate 5 with respect to the intermediate rail 4. A locking member 7 composed of a movable side rail 2 provided so as to be movable and holding a state in which the moving side rail 2 is housed in the fixed side rail 1 is placed on the inner surface of the front end portion of the fixed side rail 1 and the locking member 7 is provided. A lock member 6 that can be engaged with and detached from the rail 2 is provided on the inner surface of the front end portion of the moving side rail 2.

The fixed side rail 1 includes upper and lower curved edges 11 and 11 having ball guide grooves in the inner surface longitudinal direction (sliding direction) formed by bending both ends of the short side of the metal elongated strip in an inward arc shape. , The cross section is substantially C-shaped from the substrate 12, a part of the substrate 12 protrudes in the moving side rail 2 direction at the front part in the sliding direction, 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 the state of being pulled out to the maximum, and the substrate 12 is projected in the moving side rail 2 direction at the rail extending stopper 13 which makes the slide rail 100 the maximum extension, and at the rear end in the sliding direction. , An intermediate rail 4 or the like is used to form a rail shortening stopper that stops the moving side rail 2 in the most retracted state and makes the slide rail 100 the shortest reduced state.

The intermediate rail 4 is formed of an inner intermediate rail 4a inserted into the fixed side rail 1 side and an outer intermediate rail 4b into which the moving side rail 2 can be inserted.
The inner intermediate rail 4a has upper and lower ends having ball guide grooves in the outer longitudinal direction (sliding direction) by bending both ends of a metal elongated strip shorter than the fixed side rail 1 in an outward arc shape. It is composed of bent edges 42a and 42a and a substrate 41a, and is formed in a substantially U-shaped cross section having the same shape as the moving side rail 2.
The outer intermediate rail 4b is a vertical fold having a ball guide groove in the inner longitudinal direction (sliding direction) by bending both ends of a metal elongated strip shorter than the moving side rail 2 in an inward arc shape. It is composed of curved edges 42b and 42b and a substrate 41b, and is formed in a substantially C-shaped cross section having the same shape as the fixed side rail 1.
The inner intermediate rail 4a and the outer intermediate rail 4b have the substrates 41a and 40b fixed back to back so that the opening side of the U-shaped cross section and the opening side of the C-shaped cross section face outward to each other, so that the cross section is substantially I-shaped. The intermediate rail 4 is configured as described above.

Further, the inner intermediate rail rear end stopper 44a that protrudes toward the fixed side rail 1 side at the rear end portion of the substrate 41a of the inner intermediate rail 4a and comes into contact with the rear end portion of the fixed side ball holding plate 3 when the moving side rail 2 is pulled out. Is formed.
Then, the outer intermediate rail rear end stopper 44b is formed so as to project toward the moving side rail 2 side at the rear end portion of the substrate 41b of the outer intermediate rail 4b and come into contact with the rear end portion of the moving side rail 2 when the moving side rail 2 is stored. An outer intermediate rail front end stopper 45b with which the front end of the moving side ball holding plate 5 abuts is formed in the vicinity of the front end portion of the substrate 41b.

The moving side rail 2 has almost the same length as the fixed side rail 1, and has an outer surface formed by bending both ends of a metal elongated strip plate in an outward arc shape so as to bulge inward. It has a ball guide groove in the longitudinal direction (sliding direction), and is formed in a substantially U-shaped cross section facing the upper and lower curved edges 21 and 21 and the fixed side rail 1 from the substrate 22.
Then, the rear end portion of the substrate 22 abuts on the rear end of the moving side ball holding plate 5 in the maximum extended state of the slide rail 100, and when the moving side rail 2 is stored, the inner surface of the outer intermediate rail rear end stopper 44b. A moving side rail rear end stopper 220 that comes into contact with the rail is formed.

The fixed-side ball holding plate 3 is a strip metal plate that is shorter than the inner intermediate rail 4a by a predetermined dimension, and has a size that can be inserted between the fixed-side rail 1 and the inner intermediate rail 4a, and the fixed-side rail 1 and the inner. The number of longitudinal (sliding directions) of the upper and lower protruding edges 32, 32 formed in a substantially U-shape from the upper and lower protruding edges 32, 32 located between the upper and lower bent edges 11, 11, 42a, 42a of the intermediate rail 4a. The balls 30 ... Are rotatably held at the points.

The moving-side ball holding plate 5 is a strip metal plate that is shorter than the outer intermediate rail 4b by a predetermined dimension, and has a size that can be inserted between the moving-side rail 2 and the outer intermediate rail 4b, and an intermediate between the moving-side rail 2 and the moving-side rail 2. It 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, 42b and 42b of the rail 4, and is formed at several points in the longitudinal direction (sliding direction) of the protruding edges 52 and 52. The balls 50 ... Are rotatably held.

The slide rail 100 is configured as described above.
In the slide rail 100, the substrate 31 and the substrate 51 are arranged in the vertical direction, and the balls 30 ... And the balls 50 ... Are arranged vertically facing each other with the substrate 31 and the substrate 51 interposed therebetween ( The state of FIG. 2) is referred to as vertical use of the slide rail 100, and the substrate 31 and the substrate 51 are arranged in the horizontal direction, and the balls 30 ... The state of being arranged facing each other in the direction is referred to as horizontal use of the slide rail 100.
When the moving side rail 2 of the slide rail 100 is most housed in the fixed side rail 1 (shortest reduced state), the inner intermediate rail rear end stopper 44a comes into contact with the rail shortening stopper of the fixed side rail 1. The moving side rail rear end stopper 220 of the moving side rail 2 is in contact with the front surface of the outer intermediate rail rear end stopper 44b, and the lock member 6 of the moving side rail 21 is engaged with the engaging portion 7 of the fixed side rail 1. .. (Locked state. In this state, a release clearance for releasing the locked state of the lock member 6 and the locking member 7 is provided, and the moving side rail 2 can be slightly moved in the sliding direction of the slide rail 100. It has become.)

From this state, when the engagement state of the lock member 6 with the engaging portion 7 is released and the moving side rail 2 is pulled forward, the moving side is only half the moving distance of the moving side rail 2. Since the ball holding plate 5 moves and the fixed side ball holding plate 3 moves by a distance of half the moving distance of the intermediate rail 4, the front surface of the moving side rail rear end stopper 220 is the moving side ball holding plate 5. The front end of the moving side ball holding plate 5 abuts on the rear end, the front end of the moving side ball holding plate 5 abuts on the rear surface of the outer intermediate rail front end stopper 45b, and the front surface of the inner intermediate rail rear end stopper 44a abuts on the rear end of the fixed side ball holding plate 3. The front end of the fixed side ball holding plate 3 comes into contact with the rear surface of the rail extension stopper 13 of the fixed side rail 1, the moving side rail 2 and the intermediate rail 4 stop, and the slide rail 100 is in the maximum extended state.

Next, the lock member 6 of the first embodiment will be described with reference to FIGS. 3 and 4.
The lock member 6 of the first embodiment is composed of a base member 60 integrally molded of a synthetic resin material and an operation member 61 integrally molded of the synthetic resin material.

The base member 60 has a fixed substrate portion 601 having moving side upper and lower fitting recesses 602 and 602 fitted to the inner surfaces of the upper and lower bent edges 21 and 21 of the moving side rail 2 on the upper and lower surfaces, and a rear portion of the fixed substrate portion 601 ( A pair of projecting pieces 603 and 603 projecting vertically on the fixed side rail 3 side at the pull-in side) and symmetrically arranged vertically facing each other projecting to the front side (pulling side) of each of the projecting pieces 603 and 603. From the elastic members 604 and 604 and the retaining piece 605 that is inserted into the guide groove 618 formed in the operation member 61 to be described later and protrudes forward toward the front end of the fixed substrate portion 601 to prevent the operation member 61 from coming off. It is composed. As described above, the base member 60 is made of synthetic resin and is integrally formed.

The fixed substrate portion 601 is a rectangular parallelepiped long in the front-rear direction so as to fit on the inner surface of the moving side rail 2 when viewed from the front (viewed from the directions of FIGS. 2 and 13). 602 is provided, and a long rotating recess 601a is provided on the substrate 22 side of the moving side rail 2 from the back surface of the protruding pieces 603 and 603, and the rotating recess 601a is partially provided in front of the protruding pieces 603 and 603. Is provided with a cylindrical rotating shaft 601b that penetrates the fixed side rail side and projects from the back surface of the protruding pieces 603 and 603 toward the substrate 22 side.

The upper protruding piece 603 protrudes toward the fixed side rail 1 to a height close enough not to abut on the fixed portion 72 of the locking member 7 installed on the fixed side rail 1, which will be described later, and the upper surface thereof is The height is set so close that it does not abut on the contact receiving surface 71a on the inner surface of the fixed-side vertical fitting protrusion 71 of the locking member 7, which will also be described later, and the upper surface thereof is defined as the mounting surface 603c and the mounting surface 603c. A guide surface 603a inclined to the pull-in side is formed on the rear portion and the surface on the fixed side rail 1 side. Since the projecting pieces 603 and 603 are arranged symmetrically in the vertical direction, the lower projecting piece 603 has a symmetrical shape with the upper projecting piece 603, and the projecting pieces 603, A passage recess 603b is formed between the 603s, which is a recess through which the locking projection 73 can pass.

Of the upper and lower elastic members 604 and 604, the upper elastic member 604 has an elastic rod 604a extending forward from the front surface (drawer side surface) of the upper protruding piece 603 and an elastic rod 604a swelling downward from the front end portion of the elastic rod 604a. It is composed of an arc-shaped pressing portion 604b to be ejected. The lower elastic member 604 has the same shape as the upper elastic member 604, and is arranged vertically facing the target. Then, the space between the tips of the opposing pressing portions 604b and 604b is opened by a dimension slightly shorter than the height dimension of the lock portion 613 of the operation member 61 described later.

The retaining piece 605 is formed so as to project in a flat plate shape from the front surface side of the flange portion 601c formed on the front surface of the fixed substrate portion 601 toward the front.
Further, from the rear surface of the fixed substrate portion 601 to the rear, a fixed piece 601d having a fixed square hole is projected along the substrate 22 of the moving side rail 2.

The operation member 61 has a rotation base portion 611 pivotally supported on the base member 60 in the vertical direction and a locking projection 614 on the surface on the fixed side rail 1 side, which is connected in front of the rotation base portion 611. The lock portion 613 and the operation arm portion 617 of the operation portion which is connected in front of the lock portion 613 and protrudes in front of the moving side rail 2 to rotate the rotation base portion 611 in either the vertical direction and the operation portion. It is composed of a guide groove 618 that penetrates in the vertical direction provided on the pull-in side surface portion of the moving side rail 2 of the arm portion 617 on the substrate 22 side.
The rotation base portion 611 is formed with a rotation holding through hole 612 that penetrates from the front surface side (fixed side rail 1 side) to the back surface side (the surface of the moving side rail 2 on the substrate 22 side).

The locking projection piece 614 protrudes toward the fixed side rail 1 to a height close to the fixing portion 72 of the locking member 7 so as not to come into contact with the fixed portion 72, and has an arcuate and concave shape on the front surface (drawer side surface). The combined lock portion 614a is formed, and the guided inclined portions 614b and 614b that incline toward the rear are formed on the upper surface side and the lower surface side of the locking projection piece 614.

Next, a method of mounting the lock member 6 on the moving side rail 2 will be described in detail.
The rotation base 611 of the operation member 61 is inserted from the penetration side of the rotation recess 601a of the base member 60 so that the rotation holding through hole 612 is pivotally supported by the rotation shaft 601b of the base member 60 and is operated. The retaining piece 605 of the base member 60 is inserted into the guide groove 618 of the member 61 so as to be inserted.
As described above, the distance between the tips of the pressing portions 604b and 604b is slightly shorter than the height dimension of the locking portion 613 of the operating member 61, which will be described later. The operating member 61 is charged into the base member 60 while expanding the space between the tips of the levers and elastically deforming the elastic rods 604a and 604a.
Therefore, with the operating member 61 mounted on the base member 60, a slight elastic force of the elastic rods 604a and 604a is always transmitted to the operating member 61 via the pressing portions 604b and 604b, so that the operating member 61 moves up and down. It will be held in the middle part of the rotation. In this state, the operating member 61 is rotatable with respect to the base member 60, and the assembly of the lock member 6 is completed.

Then, in the lock member 6, the fixing piece 601d of the base member 60 is placed at a predetermined position on the pull-out direction end of the moving side rail 2 from the front end surface of the moving side rail 2 toward the rear, and the flange portion 601c is the moving side rail. Push it so that it is close to the front end surface of 2.
When pushed in this way, the fixing hole of the fixing piece 601d and the fixing piece 22a projecting on the substrate 22 side of the moving side rail 2 are engaged with each other, and the front-back movement of the lock member 6 is fixed, and the moving side rail 2 is fixed. It will not come off from the front end face. Since the moving-side upper and lower fitting recesses 602 and 602 are provided along the inner surfaces of the bulging upper and lower bent edges 21 and 21 of the moving-side rail 2, the lock member 6 is on the fixed-side rail 1 side. The lock member 6 is mounted and held on the moving side rail 2 in a fitted state.

Further, since the operation member 61 is mounted so that the retaining piece 605 of the base member 60 is inserted into the guide groove 618 of the operation member 61, even if the operation arm portion 617 is tilted in the left-right direction, the guide groove 618 The retaining piece 605 comes into contact with the inner surface of the base member 60, the inclination of the operating arm portion 617 is restricted, and the operating member 61 does not easily come off from the base member 60.

As shown in FIGS. The 71 is integrally formed of a synthetic resin material from the fixed portion 72 connected between the fixed side upper and lower fitting protrusions 71 and 71.
The lower surface on the upper side and the upper surface on the lower side of the fixed side upper and lower fitting protrusions 71 and 71 are the contact receiving surfaces 71a and 71a, respectively, and the space between the fixed side upper and lower fitting protrusions 71 and 71, that is, the contact surface. The space between the contact surfaces 71a and 71a is formed slightly larger than the distance between the contact surfaces 603c and 603c of the projecting pieces 603 and 603 of the lock member 6, and the projecting pieces 603 and 603 are formed between the contact surface 71a and 71a. It is insertable and is set so that the contact receiving surface 71a and the contact surface 603c are close to each other.

Then, on the surface of the fixed side rail 1 on the board 12 side of the fixed portion 72, a fitting projection 721 that fits into the mounting fitting hole 121 formed in the board 12 of the fixed side rail 1 is continuously provided, and the moving side is provided. A locking projection 73 is continuously provided on the surface on the rail 2 side corresponding to the locking projection 614 of the operating member 61, and an opening of an escape hole for a screw for fixing the slide rail 100 behind the locking projection 73. A hole 722 is formed.

The locking projection 73 projects toward the moving side rail 2 to a height close enough not to abut on the locking portion 613 of the operating member 61, and is guided by the locking projection 614 formed on the upper and lower surfaces of the front end portion. From the guide inclined portions 731 and 731 that incline toward the rear corresponding to the portion 614b and the abutting locking portion 732 formed at the rear end portion corresponding to the engaging locking portion 614a of the locking projection piece 614. It is formed.

The locking member 7 configured in this way is pushed outward from the inner surface of the fixed side rail 1 to a predetermined position at the end portion of the fixed side rail 1 in the drawing direction, and is mounted on the fixed side rail 1.
At the time of this mounting, the fixed portion 72 connected to the fixed side upper and lower fitting protrusions 71 and 71 is elastically deformed, so that the fixed side upper and lower fitting protrusions 71 and 71 are inserted into the ball guide groove portion of the fixed side rail 1. The fitting projections 721 and 721 of the locking member 7 are fitted into the mounting fitting holes 121 and 121 of the fixed side rail 1, and the locking member 7 is fitted to the fixed side rail 1 by the elastic force of the fixing portion 72. It is attached and held at.
At this time, since the fitting protrusion 721 is fitted with the mounting fitting hole 121, the locking member 7 does not move in the pull-out direction of the rail.

The locking member 6 and the locking member 7 of the first embodiment are formed as described above, and the moving side rail 2 is housed from the maximum extended state (the state in which the drawer, the shelf board, etc. are most pulled out). Then, due to factors such as the load applied to the slide rail 100, the intermediate rail 4 is stored first with respect to the fixed side rail 1, or the moving side rail 2 is stored first with respect to the intermediate rail 4. Is to store the moving side rail 2 in the intermediate rail 4 and the fixed side rail 1 in the intermediate rail 4 at the same time.

However, since the lock member 6 is provided on the front side of the moving side rail 2, the lock member 6 is finally provided regardless of the storage order of the moving side rail 2 and the intermediate rail 4 with respect to the fixed side rail 1. The guided inclined portion 614b formed on the locking projecting piece 614 comes into contact with the guided inclined portion 731 of the locking projection 73 formed on the locking member 7 (state shown in FIG. 7).
When the moving side rail 2 is further retracted from this state, the guided inclined portion 614b is in contact with the guided inclined portion 731, and the operating member 61 is used with the rotation holding through hole 612 of the rotation base 611 as the central axis. Since the elastic rail 604a is elastically deformed and rotated upward or downward via the pressing portion 604b of the elastic member 604, the locking projectile 614 follows and moves upward or downward (state shown in FIG. 8). ..

Further, when the moving side rail 2 is stowed, the engaging lock portion 614a of the locking projecting piece 14 passes through either the upper or lower side of the locking projection 73 of the locking member 7 to the storage side, and then the elasticity of the elastic member 604. Due to the force, the operating member 61 is rotated to the original state, the locking projection piece 14 is also returned to the original position, and the slide rail 100 is in the shortest contracted state (state shown in FIG. 9).

That is, the inner intermediate rail rear end stopper 44a abuts on the front surface of the rail shortening stopper of the fixed side rail 1, and the moving side rail rear end stopper 220 of the moving side rail 2 hits the front surface of the outer intermediate rail rear end stopper 44b. The engagement lock portion 614a of the operating member 61 comes into contact with the contact locking portion 732 of the locking member 7 and is in a locked state (locked state shown in FIG. 9). In this state, a release clearance for releasing the locked state of the lock member 6 and the locking member 7 is formed between the engaging lock portion 614a and the contact locking portion 732, and the moving side rail 2 is a slide rail. It is slightly movable in the sliding direction of 100.

Then, when a load is applied to the display shelf or the like on which the slide rail 100 is installed in the locked state, the load is applied to the rail on the display shelf side, that is, the moving side rail 2, and between the members of the slide rail 100. The clearance and the elastic deformation of the moving side rail 2 overlap, and the moving side rail 2 bends downward, that is, tries to move.
In particular, when the lock member 6 is provided at the front end of the moving side rail 2 and the locking member 7 is provided at the front end of the fixed side rail 1 as in the present embodiment, the lock member 6 is in the fully contracted state of the slide rail 100. Since the locking member 6 and the locking member 7 are located at the locking member 7, the intermediate rail 4 cannot be arranged. Further, since the moving side ball holding plate 5 is also arranged on the retracting side in the case of the ball support type slide rail, the moving side rail 2 is supported from the front end to the front of the moving side ball holding plate 5. There is no. Therefore, since the portion of the lock member 6 of the moving side rail 2 is not supported by the intermediate rail 4, it easily bends downward (state shown in FIG. 12).

When the moving side rail 2 bends (moves) downward, the engagement lock portion 614a moves below the contact locking portion 732, so that the engagement lock portion 614a and the contact locking portion 732 are in contact with each other. The contact is released and the lock is released. In particular, in the case of a slide rail having a small cross section, the rigidity of each member constituting the slide rail is low, so that the entire slide rail tends to bend easily.

In the configuration of the present embodiment, when the moving side rail 2 moves downward, the contact surface 603c of the protruding piece 603 on the lower side of the lock member 6 comes into contact with the contact receiving surface 71a of the locking member 7.
Since the contact surface 603c and the contact receiving surface 71a are close to each other as described above, the moving side rail 2 does not move downward more than necessary.

When the contact surface 603c comes into contact with the contact receiving surface 71a, the load applied to the moving side rail 2 can also be received by the fixed side rail 1 via the contact receiving surface 71a, so that the moving side rail 2 and the fixed side rail 1 can be received. Can work together to support the load.
Since the contact surface 603c of the moving side rail 2 abuts on the contact receiving surface 71a of the locking member 7, the vertical positional relationship between the moving side rail 2 and the fixed side rail 1 does not change significantly. The contact between the lock portion 614a and the contact locking portion 732 does not come off, and the lock is not released.
In this way, the steady rest device 62 is configured by the contact surface 603c and the contact receiving surface 71a, and when the steady rest device 62 is provided in the lock device, the moving side rail 2 and the fixed side rail 1 cooperate with each other to form the slide rail 100. Since the deflection and runout of the front end can be regulated, it is particularly effective in maintaining the locked state.

Further, in the present embodiment, the contact receiving surface 71a is provided on the locking member 7, but the contact surface 603c may be brought into contact with the upper and lower bent edges 11 of the fixed side rail 1. In this case, the contact surface of the upper and lower bent edges 11 becomes the contact receiving surface. However, since the fixed side rail 1 is usually made of steel, when the contact surface 603c and the upper and lower bent edges 11 come into contact with each other, the contact surface 603c is made of synthetic resin, so that it is easily scraped or cracked. Therefore, by integrally providing the locking member 7 as in the present embodiment, it is possible to contact the synthetic resin products without increasing the number of parts, so that problems such as scraping and cracking can be reduced at low cost. Is possible.

When pulling out the moving side rail 2 (shelf board of the display shelf, etc.) from the locked state of the slide rail 100, the upper surface of the shelf board and the lower surface of the operating arm 617 should be grasped with the fingertips, and the operating arm 617 should be moved upward. Alternatively, when it is moved downward, the operation member 61 rotates around the rotation holding through hole 612 of the rotation base 611 while the elastic rod 604a is elastically deformed via the pressing portion 604b of the elastic member 604.
Then, the locking projection piece 614 is positioned above or below the locking projection 73 of the locking member 7 (states shown in FIGS. 10 and 11).

Further, while maintaining the above state, the moving side rail 2 is pulled out until the locking protrusion 614 of the operating member 61 passes above the locking projection 73 of the locking member 7, and the fingertip is pulled out from the operating arm portion 617. When released, the operating member 61 rotates while being pushed back by the elastic force of the upper elastic member 604 and returns to the original state, the locking protrusion 614 also returns to the original position, and the shelf board is pulled out as it is. And the moving side rail 2 is in the maximum extended state and stops.

The lock device of the present embodiment is formed symmetrically in the vertical direction, and can be used for both left and right slide rails.
Further, the elastic member 604 may not be integrated with the base member 60, but may be integrally molded with a synthetic resin together with the operating member 61.
In the embodiment, the slide rail 100 is used vertically in which the balls are arranged in the vertical direction, but can also be used in a horizontally used slide rail in which the balls are arranged in the horizontal direction.
In the case of horizontal use, the steady rest device 62 can exert an effect on the steady rest regulation against the horizontal swing of the slide rail 100.

In addition to the slide rail, the number of parts that make up the locking device is limited to three, the locking member, the base member, and the operating member. Since the locking device is equipped with a steady rest device, the number of parts is reduced and each member. Is integrally molded with synthetic resin, so that the locking member, the base member, and the operating member can be manufactured in the same production process, so that the production efficiency is good.
Further, since the locking member consisting of the locking member, the base member, and the operating member is fitted to the slide rail by using the elastic force of the synthetic resin, a separate process such as screwing or riveting is required. Not only is the assembly efficiency good, but the locking device can be easily replaced during maintenance while the slide rail is actually in use. Further, since the lock device and the steady rest device are used for both left and right, it is not necessary to divide the management of maintenance parts into left and right, and the parts management efficiency is good.

100 Slide rail 1 Fixed side rail 11 Vertical bent edge 12 Board 2 Moving side rail 21 Vertical bent edge 22 Board 3 Fixed side ball holding plate 4 Intermediate rail 4a Inner intermediate rail 4b Outer intermediate rail 5 Moving side ball holding plate 6 Lock Member 60 Base member 601 Fixed board part 601a Rotating recess 601c Flange part 602 Moving side upper and lower fitting recess 603 Protruding piece 603b Passing recess 603c Contact surface 604 Elastic member 605 Anti-disengagement piece 61 Operating member 611 Rotating base 614 Locking protrusion 614a Engagement lock part 614b Guided inclined part 617 Operation arm part 618 Guide groove 62 Anti-sway device 7 Locking member 71 Fixed side upper and lower fitting protrusion 71a Contact receiving surface 72 Fixed part 721 Fitting protrusion 722 Opening hole 73 Stop protrusion 731 Guide inclined portion 732 Abutment locking portion

Claims (2)

It is mainly composed of a fixed side rail fixed to the main body of a rack or the like, an intermediate rail slidably arranged with respect to the fixed side rail, and a moving side rail slidably arranged with respect to the intermediate rail. In a locking device composed of a locking member provided on the fixed side rail and a locking member provided on the moving rail, which temporarily fixes the sliding of the slide rail, the locking member can be freely engaged with and detached from the locking member. Further, it is provided with an operating member and a base member that make the moving rail slidable by unlocking the locking member, and the base member is fitted and attached to the moving rail, and the operating member is attached to the base member. A slide rail locking mechanism that is characterized by being supported and held. The slide rail locking mechanism according to claim 1, wherein the operating member is prevented from being easily detached from the base member by a detachment preventing portion.

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