JP7366452B2 - Slide rail locking mechanism - Google Patents

Description

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

Conventionally, a number of locking devices for slide rails have been provided.
As shown in Prior Art Document 1 (Patent Document 1) as a typical example, a fixed side rail fixed to a main body such as a rack, an intermediate rail slidably arranged with respect to the fixed side rail, A movable rail slidably disposed on the intermediate rail, a locking member removably provided on the inner surface of the front end of the stationary rail, and a front end of the movable rail corresponding to the locking member. There is a locking device for a slide rail that includes a locking member provided on the inner surface.
The locking device maintains a locked state by locking a locking protrusion provided on the locking member at the center of the fixed side rail in the height direction and a locking protrusion provided on the locking member. The locking protrusion is released by rotating the operating member of the lock part in either the up or down direction and retracting the locking protrusion in either the up or down direction. This is to release the lock.

The operation member of the lock part can be rotated either up or down, since the locking device does not have to be made for right or left use, but can be used for left and right use either from the top or bottom of the locking protrusion. Since the locking state of the locking protrusion can be released, the locking state of the locking protrusion and the locking protrusion is performed only near the intermediate portion in the height direction of the slide rail.
In the case of such a locking device, if a large load is applied to the moving side slide rail, the moving side slide rail will bend downward due to the load even if the locking device is in the locked state, causing the locking protrusion and the locking protrusion to The locked state was sometimes released.

Japanese Patent Application Publication No. 2015-229035

To provide a slide rail with a locking device that has a simple and compact structure, can be manufactured at low cost with a small number of parts, has excellent workability and maintainability, and can more reliably maintain a locked state. The task is to

Therefore, in order to solve the above-mentioned problems, the present invention is configured as a first means, mainly by a fixed side rail fixed to a main body such as a rack, and a fixed side rail arranged slidably with respect to the fixed side rail. A locking member provided on the fixed side rail and a locking member provided on the moving side rail temporarily fix the sliding of the slide rail, which is composed of an intermediate rail and a moving side rail that is arranged so as to be slidable with respect to the intermediate rail. In a locking device composed of a locking member, the locking member includes an operation member that can be freely engaged with and detached from the engagement member, and that allows the movable side rail to slide by an operation of releasing the engagement with the engagement member, and a base. The base member is fitted and attached to the movable side rail, so that the operating member is not pivoted and supported by the movable rail but is supported by the base member, and the operating member is mounted on the movable rail. The operating member does not have a supporting part for pivoting, and the operating member is not directly pivoted to the moving rail but is pivoted to the base member, and the operating member is provided with a supporting part for pivoting. By inserting the retaining piece provided on the base member into the guide groove, the inclination of the operating arm is regulated even when the operating arm is tilted in the left-right direction, and the operating member is is designed so that it does not easily come off from the base member.

According to the first means of the present invention, since the operating member is pivotally supported by the base member, when attaching the locking member to the rail, the operating member is first attached to the base member, and then the operating member is The base member including the base member can be attached to the rail, and assembly is easy because there is no need to touch the three members, the operating member, the base member, and the rail, at the same time.

In addition , since the operating member does not easily come off from the base member, the operating member does not fall off when attaching the locking member to the rail, making the assembly work easier. You can prevent it from coming off easily.

A perspective view of the slide rail of the present invention in the middle of extension Basic sectional view of slide rail An exploded perspective view of the main parts of the moving side rail and locking member An exploded perspective view of the main parts on the back side of the moving side rail and locking member Perspective view of main parts of fixed side rail and locking member A perspective view of the main parts of the fixed side rail and the back side of the locking member An explanatory diagram showing a state where the guided inclined surface of the locking protrusion and the guided inclined surface of the locking protrusion are in contact with each other. Explanatory diagram showing a state in which the movable rail is sliding while the locking protrusion is in contact with the locking protrusion Explanatory diagram of the locked state of the slide rail An explanatory diagram showing a state in which the locking protrusion moves upward from the locking protrusion and the locked state is released. An explanatory diagram showing a state in which the locking protrusion moves downward from the locking protrusion and the locked state is released. Explanatory diagram showing the slide rail contraction state Explanatory diagram showing the relationship between the protruding piece and the contact part

The best mode for carrying out the present invention will be described based on examples.
First, the basic structure of the slide rail will be explained based on FIGS. 1 and 2.
For convenience, the up-down direction in FIG. 2 is referred to as the up-down direction, the left-right direction is referred to as the left-right direction, the lower left side in FIG. 1 is referred to as the pull-out side, and the upper right side in FIG. 1 is referred to as the 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 on a fixed side ball holding plate 3 with respect to the fixed side rail 1. The intermediate rail 4 is slidably provided via the intermediate rail 4, and the intermediate rail 4 is slidably provided via a plurality of balls 50, which are rotatably held on the moving side ball holding plate 5. A locking member 7 is provided on the inner surface of the front end of the fixed rail 1 and is configured of a movable rail 2 that is movably provided. A locking member 6 that can be freely engaged and detached is provided on the inner surface of the front end of the moving side rail 2.

The fixed side rail 1 has upper and lower bent edges 11, 11 each having a ball guide groove in the longitudinal direction (sliding direction) on the inner surface formed by bending both shorter ends of a metal elongated strip into an inward arc shape. , has a substantially C-shaped cross section from the board 12, and a part of the board 12 protrudes in the direction of the moving rail 2 at the front in the sliding direction, and includes a fixed ball holding plate 3, an intermediate rail 4, a moving ball holding plate 5, etc. A stopper 13 at the time of rail extension stops the movable side rail 2 in the maximum extended state and makes the slide rail 100 extend to the maximum, and a board 12 is protruded in the direction of the movable side rail 2 at the rear end in the sliding direction. A rail shortening stopper is formed via the intermediate rail 4 and the like to stop the movable side rail 2 in the most stowed state and bring the slide rail 100 into the shortest shortened state.

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

In addition, an inner intermediate rail rear end stopper 44a that protrudes toward the fixed rail 1 side at the rear end of the base plate 41a of the inner intermediate rail 4a and comes into contact with the rear end of the fixed ball holding plate 3 when the movable rail 2 is pulled out. is formed.
Then, an outer intermediate rail rear end stopper 44b is formed at the rear end of the base plate 41b of the outer intermediate rail 4b, which protrudes toward the moving side rail 2 side, and with which the rear end of the moving side rail 2 comes into contact when the moving side rail 2 is stored. An outer intermediate rail front end stopper 45b is formed near the front end of the board 41b, with which the front end of the movable ball holding plate 5 comes into contact.

The movable side rail 2 has an outer surface that is approximately the same length as the stationary side rail 1, and is formed by bending both short ends of a long thin metal strip into an outward arc shape so as to bulge inward. It has a ball guide groove in the longitudinal direction (sliding direction), and is formed into a substantially U-shaped cross section facing the fixed side rail 1 from the upper and lower bent edges 21, 21 and the base plate 22.
The rear end of the board 22 is in contact with the rear end of the moving side ball holding plate 5 when the slide rail 100 is in its maximum extension state, and when the moving side rail 2 is stored, the inner surface of the outer intermediate rail rear end stopper 44b is provided. A moving side rail rear end stopper 220 is formed which comes into contact with the moving side rail rear end stopper 220.

The fixed side ball holding plate 3 is made of a strip metal plate and has a substrate 31 that is a predetermined dimension shorter than the inner intermediate rail 4a 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 intermediate rail 4a. 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 are formed into a substantially U-shaped cross section, and the number of the upper and lower protruding edges 32, 32 in the longitudinal direction (sliding direction) is Balls 30 are rotatably held at these locations.

The moving side ball holding plate 5 is made of a strip metal plate and has a board 51 that is a predetermined dimension shorter than the outer intermediate rail 4b and has a size that can be inserted between the moving side rail 2 and the outer intermediate rail 4b. The upper and lower protruding edges 52, 52 located between the upper and lower bent edges 21, 21, 42b, 42b of the rail 4 are formed into a substantially U-shaped cross section, and at several locations in the longitudinal direction (sliding direction) of the protruding edges 52, 52. Balls 50 are held rotatably.

The slide rail 100 is configured as described above.
Note that the slide rail 100 has a state in which the substrate 31 and the substrate 51 are arranged vertically, and the balls 30 . . . and the balls 50 . The state shown in FIG. 2) is called the vertical use of the slide rail 100, in which the board 31 and the board 51 are arranged horizontally, and the balls 30, 50, and so on are placed horizontally with the board 31 and the board 51 in between. The state in which the slide rails 100 are disposed opposite each other in the direction is referred to as horizontal use of the slide rail 100.
When the movable rail 2 of the slide rail 100 is fully accommodated in the fixed rail 1 (minimum shortened state), the inner intermediate rail rear end stopper 44a contacts the rail shortening stopper of the fixed 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 locking 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 is provided to release the locked state between the lock member 6 and the locking member 7, and the moving side rail 2 can be moved slightly in the sliding direction of the slide rail 100. )

From this state, when the locking member 6 is disengaged from the engaging portion 7 and the movable rail 2 is pulled forward, the movable rail 2 is moved by a distance of 1/2 of the moving distance of the movable rail 2. The ball holding plate 5 moves, and the fixed side ball holding plate 3 moves by a distance that is half of the moving distance of the intermediate rail 4, so that the front surface of the moving side rail rear end stopper 220 is on the moving side ball holding plate 5. the front end of the movable ball holding plate 5 contacts 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 contacts the rear end of the fixed ball holding plate 3; The front end of the fixed ball holding plate 3 comes into contact with the rear surface of the stopper 13 of the fixed rail 1 during rail extension, the movable rail 2 and the intermediate rail 4 stop, and the slide rail 100 reaches its maximum extension state.

Next, the locking member 6 of the first embodiment will be explained based on FIGS. 3 and 4. FIG.
The locking member 6 of the first embodiment is composed of a base member 60 integrally molded from a synthetic resin material and an operating member 61 integrally molded from a synthetic resin material.

The base member 60 includes a fixed base plate part 601 which has movable side upper and lower fitting recesses 602, 602 on the upper and lower surfaces that fit into the inner surfaces of the upper and lower bent edges 21, 21 of the movable side rail 2, and a rear part of the fixed base plate part 601 ( A pair of vertically protruding pieces 603, 603 that protrude toward the stationary rail 3 side on the pull-in side) and a pair of vertically protruding pieces 603, 603 that protrude toward the front side (drawer side) of each of the protruding pieces 603, 603 are disposed symmetrically opposite to each other in the vertical direction. Elastic members 604, 604 and a retaining piece 605 that protrudes forward from the front end of the fixed base plate 601 and is inserted into a guide groove 618 formed in the operating member 61, which will be described later, to prevent the operating member 61 from coming off. configured. In this way, the base member 60 is integrally formed of synthetic resin.

The fixed board part 601 is a rectangular parallelepiped long in the front-rear direction so as to fit into the inner surface of the moving side rail 2 when viewed from the front (viewed from the direction of FIGS. 2 and 13), and has upper and lower fitting recesses 602, 602 is provided, and a long rotation recess 601a is provided on the board 22 side of the moving rail 2 from the back surface of the protrusion pieces 603, 603, and the rotation recess 601a is partially in front of the protrusion pieces 603, 603. A cylindrical rotating shaft 601b is provided that penetrates toward the stationary rail side and projects from the rear surface of the protruding pieces 603, 603 toward the board 22 side.

The upper protruding piece 603 protrudes toward the fixed rail 1 to a height that is close to the fixed part 72 of the locking member 7 installed on the fixed rail 1, which will be described later. , the height is set close to the contact receiving surface 71a on the inner surface of the fixed side upper and lower fitting protrusion 71 of the locking member 7, which will also be described later. A guide surface 603a that is inclined toward the retraction side is formed on the rear surface of the guide surface and the surface on the fixed side rail 1 side. Since the protruding pieces 603, 603 are disposed symmetrically facing each other in the vertical direction, the lower protruding piece 603 is symmetrical with the upper protruding piece 603, and the protruding piece 603, A passage recess 603b, which is a recess through which the locking protrusion 73 can pass, is formed between the holes 603.

Of the upper and lower elastic members 604, 604, the upper elastic member 604 has an elastic rod 604a extending forward from the front surface (drawer side) of the upper protruding piece 603, and an elastic rod 604a extending downward from the front end of the elastic rod 604a. It is configured with an arc-shaped pressing portion 604b that extends. The lower elastic member 604 has the same shape as the upper elastic member 604 and is arranged vertically to face the object. The distal ends of the opposing pressing parts 604b and 604b are opened by a dimension slightly shorter than the height dimension of the locking part 613 of the operating member 61, which will be described later.

The retaining piece 605 is formed in a flat plate shape and protrudes forward from the front side of the flange portion 601c formed on the front surface of the fixed substrate portion 601.
Further, a fixing piece 601d having a fixing square hole is provided protruding rearward from the rear surface of the fixed board part 601 so as to extend along the board 22 of the movable side rail 2.

The operating member 61 includes a rotating base 611 that is vertically rotatably supported by the base member 60, and a locking protrusion 614 that is connected to the front of the rotating base 611 and is provided on a surface on the fixed rail 1 side. A lock part 613, an operating arm part 617 of an operating part that is connected to the front of the lock part 613, projects in front of the moving rail 2, and rotates the rotation base 611 in either the up or down direction; It is constituted by a guide groove 618 that is provided on the retracting side surface of the moving side rail 2 of the arm portion 617 on the substrate 22 side and that penetrates in the vertical direction.
A rotation holding through hole 612 is formed in the rotation base 611 and extends from the front side (fixed side rail 1 side) to the back side (the surface of the movable side rail 2 on the substrate 22 side).

The locking protrusion 614 protrudes toward the fixed side rail 1 to a height that is close enough not to contact the fixed part 72 of the locking member 7, and has an arcuate and concave locking piece on the front surface (drawer side surface). A mating lock portion 614a is formed, and guided slope portions 614b, 614b that slope toward the rear are formed on the upper and lower surfaces of the locking protrusion 614.

Next, a method for attaching the lock member 6 to the movable 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, and operated so that the rotation holding through hole 612 is pivotally supported by the rotation shaft 601b of the base member 60. The base member 60 is inserted so that the retaining piece 605 of the base member 60 is inserted into the guide groove 618 of the member 61.
As mentioned above, the distance between the tips of the pressing parts 604b, 604b is slightly shorter than the height of the locking part 613 of the operating member 61, which will be described later. The operating member 61 is inserted into the base member 60 while pushing apart the ends of the elastic rods 604a and elastically deforming the elastic rods 604a, 604a.
Therefore, when the operating member 61 is attached to the base member 60, a slight elastic force of the elastic rods 604a, 604a is always transmitted to the operating member 61 via the pressing portions 604b, 604b, so that the operating member 61 is moved upwardly and downwardly. It will be held in the middle of rotation. In this state, the operating member 61 becomes rotatable relative to the base member 60, and the assembly of the locking member 6 is completed.

Then, the locking member 6 holds the fixed piece 601d of the base member 60 at a predetermined position on the end of the moving side rail 2 in the pull-out direction from the front end surface of the moving side rail 2 toward the rear, so that the flange portion 601c is attached to the moving side rail 2. Push it in close to the front end surface of No.2.
When pushed in in this way, the fixing hole of the fixing piece 601d and the fixing piece 22a protruding from the board 22 side of the movable rail 2 are engaged, and the forward and backward movement of the lock member 6 is fixed, and the fixing hole of the fixing piece 601d is engaged. It will not come off from the front end surface. Since the movable side upper and lower fitting recesses 602, 602 are formed along the inner surfaces of the bulging upper and lower bent edges 21, 21 of the movable side rail 2, the locking member 6 is attached to the fixed side rail 1 side. Therefore, the locking member 6 is kept attached to the movable rail 2 in a fitted state.

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

As shown in FIGS. 6 and 7, the locking member 7 includes a fixed side upper and lower fitting projection 71 that fits into a ball guide groove formed on the inner surface of the upper and lower bent edges 11, 11 of the fixed side rail 1, 71 and a fixing part 72 that is connected between the fixed side upper and lower fitting protrusions 71 and 71 are integrally formed of a synthetic resin material.
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, 71 are respectively abutment receiving surfaces 71a, 71a, and the area between the fixed side upper and lower fitting protrusions 71, 71, The distance between the contact surfaces 71a, 71a is formed slightly larger than the distance between the contact surfaces 603c, 603c of the protruding pieces 603, 603 of the lock member 6, and the protruding pieces 603, 603 are formed between the contact receiving surfaces 71a, 71a. It is set so that it can be inserted and the contact receiving surface 71a and the contact surface 603c are close to each other.

A fitting protrusion 721 that fits into the mounting hole 121 formed in the substrate 12 of the stationary rail 1 is provided in series on the surface of the fixed part 72 on the substrate 12 side of the stationary rail 1. A locking protrusion 73 is provided on the rail 2 side surface in correspondence with the locking protrusion 614 of the operating member 61, and behind the locking protrusion 73 is an opening for a screw escape hole for fixing the slide rail 100. A hole 722 is formed.

The locking protrusion 73 protrudes toward the movable rail 2 side to a height close to the lock portion 613 of the operating member 61 to the extent that it does not come into contact with the lock portion 613 of the operating member 61. From guide slope portions 731, 731 that slope toward the rear corresponding to the portion 614b, and an abutment locking portion 732 formed at the rear end portion corresponding to the engagement lock portion 614a of the locking protrusion 614. It is formed.

The locking member 7 configured in this manner is pushed outward from the inner surface of the fixed rail 1 into a predetermined position at the end of the fixed rail 1 in the drawing direction, and is attached to the fixed rail 1.
During this installation, the fixed side upper and lower fitting protrusions 71, 71 are inserted into the ball guide groove of the fixed side rail 1 by elastically deforming the fixed part 72 that is connected to the fixed side upper and lower fitting protrusions 71, 71, The fitting protrusions 721 and 721 of the locking member 7 are inserted into the 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 fixed part 72. It is attached and retained.
At this time, since the fitting protrusion 721 is fitted into the fitting fitting hole 121, the locking member 7 does not move in the direction in which the rail is pulled out.

The locking member 6 and the locking member 7 of the first embodiment are formed as described above, and the movable side rail 2 is retracted from the maximum extension state (the state where the drawer, shelf board, etc. are pulled out the most). As a result, due to factors such as the load applied to the slide rail 100, the intermediate rail 4 may be stored first with respect to the fixed side rail 1, or the movable side rail 2 may be stored first with respect to the intermediate rail 4, or even further. In this case, storage of the movable side rail 2 with respect to the intermediate rail 4 and storage of the intermediate rail 4 with respect to the fixed side rail 1 are performed simultaneously.

However, since the lock member 6 is provided on the front side of the movable rail 2, regardless of the storage order of the movable rail 2 and the intermediate rail 4 with respect to the fixed rail 1, the lock member 6 is eventually The guided slope portion 614b formed on the locking protrusion 614 contacts the guide slope portion 731 of the locking protrusion 73 formed on the locking member 7 (state shown in FIG. 7).
When the movable rail 2 is further retracted from this state, the guided inclined portion 614b contacts the guide inclined portion 731 and rotates the operating member 61 about the rotation holding through hole 612 of the rotating base 611 as the central axis. Since the elastic rod 604a is elastically deformed and rotated upward or downward via the pressing portion 604b of the elastic member 604, the locking protrusion 614 follows and moves upward or downward (the state shown in FIG. 8). .

Furthermore, when the movable side rail 2 is stored, the engagement lock part 614a of the locking protrusion 14 passes either the upper or lower side of the locking protrusion 73 of the locking member 7 toward the storage side, and then the elastic member 604 Due to the force, the operating member 61 is rotated to its original state, the locking protrusion 14 is also returned to its original position, and the slide rail 100 is brought into its minimum shortened state (the state shown in FIG. 9).

That is, the inner intermediate rail rear end stopper 44a contacts the front surface of the rail shortening stopper of the fixed rail 1, and the moving rail rear end stopper 220 of the moving rail 2 contacts the front surface of the outer intermediate rail rear end stopper 44b. The engagement locking portion 614a of the operating member 61 abuts against the abutment locking portion 732 of the locking member 7, resulting in a locked state (locked state shown in FIG. 9). In this state, a release clearance for releasing the locked state between the lock member 6 and the locking member 7 is formed between the engagement lock part 614a and the abutment locking part 732, and the moving side rail 2 is connected to the slide rail. It is possible to move slightly in the sliding direction of 100.

In the locked state, when a load is applied to the display shelf etc. on which the slide rail 100 is installed, the load is applied to the rail on the display shelf side, that is, the moving side rail 2, and the The clearance and the elastic deformation of the moving rail 2 overlap, causing the moving rail 2 to bend downward, that is, to move.
In particular, when the locking member 6 is provided at the front end of the movable side rail 2 and the locking member 7 is provided at the front end of the stationary side rail 1 as in the present embodiment, when the slide rail 100 is in the most contracted state, the locking member 6 , because the locking member 6 and the locking member 7 are located at the locking member 7, the intermediate rail 4 cannot be placed. In addition, in the case of a ball support type slide rail, the moving side ball holding plate 5 is also placed on the retraction side, so the moving side ball holding plate 5 supports the moving side rail 2 from the front end of the moving side ball holding plate 5. There is no. Therefore, the lock member 6 portion of the movable rail 2 is not supported by the intermediate rail 4, and therefore tends to bend downward (the state shown in FIG. 12).

When the movable side rail 2 bends (moves) downward, the engagement lock portion 614a moves below the abutment locking portion 732, so that the engagement lock portion 614a and the abutment locking portion 732 are in contact with each other. The connection will come off and the lock will be released. Particularly in the case of a slide rail with a small cross section, the rigidity of each member constituting the slide rail is low, so the slide rail as a whole tends to bend easily.

In the configuration of this embodiment, when the movable rail 2 moves downward, the contact surface 603c of the lower protruding piece 603 of the locking member 6 contacts 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 movable rail 2 does not move downward more than necessary.

When the contact surface 603c contacts the contact receiving surface 71a, the load applied to the moving rail 2 can also be received by the fixed rail 1 via the contact receiving surface 71a. It becomes possible to support the load by working together.
Since the abutment surface 603c of the movable rail 2 abuts the abutment receiving surface 71a of the locking member 7, the vertical positional relationship between the movable rail 2 and the fixed rail 1 does not change significantly, so that the engagement The lock portion 614a and the abutment locking portion 732 never come out of contact, and the lock is never released.
In this way, the steady rest device 62 is constituted by the contact surface 603c and the contact receiving surface 71a, and when the steady rest device 62 is provided in the locking device, the movable side rail 2 and the fixed side rail 1 cooperate, and the slide rail 100 It is particularly effective in maintaining the locked state since the front end can be controlled from bending and swinging.

Further, in this embodiment, the abutting surface 71a is provided on the locking member 7, but the abutting surface 603c may be made to abut the upper and lower bent edges 11 of the stationary rail 1. In this case, the abutment surfaces of the upper and lower bent edges 11 serve as abutment receiving surfaces. However, since the stationary rail 1 is usually made of steel, when the abutment surface 603c and the upper and lower bent edges 11 come into contact with each other, the abutment surface 603c is made of synthetic resin and is likely to be scraped or cracked. Therefore, by providing it integrally with the locking member 7 as in this embodiment, it is possible to contact the synthetic resin parts without increasing the number of parts, thereby reducing problems such as scraping and cracking at low cost. is possible.

To pull out the movable rail 2 (such as a shelf board of a display shelf) from the locked state of the slide rail 100, pinch the top surface of the shelf board and the bottom surface of the operating arm 617 with your fingertips, and then pull the operating arm 617 upward. Alternatively, when moved downward, the operating 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 protrusion 614 is positioned above or below the locking protrusion 73 of the locking member 7 (the state shown in FIGS. 10 and 11).

Furthermore, while maintaining the above state, the movable side rail 2 is pulled out until the locking protrusion 614 of the operating member 61 passes above the locking protrusion 73 of the locking member 7, and the fingertip When released, the operating member 61 is pushed back and rotated by the elastic force of the upper elastic member 604 to return to its original state, the locking protrusion 614 also returns to its original position, and the shelf board is pulled out. Then, the moving rail 2 reaches its maximum extension state and stops.

The locking device of this embodiment is formed symmetrically in the vertical direction, and can be used for both left and right slide rails.
Moreover, the elastic member 604 does not need to be integrated with the base member 60, and may be molded integrally with the operating member 61 from synthetic resin.
In the embodiment, the slide rail 100 is used vertically in which the balls are arranged vertically, but it can also be used as a horizontal slide rail in which the balls are arranged horizontally.
In the case of horizontal use, the steady rest device 62 can be effective in regulating the steady rest against horizontal shaking of the slide rail 100.

In addition to the slide rail, the number of parts that make up the locking device is only three: a locking member, a base member, and an operating member.Since the locking device is equipped with a steady rest device, the number of parts is reduced, and each member Since it is integrally molded from synthetic resin, the locking member, the base member, and the operating member can be manufactured in the same production process, resulting in good production efficiency.
In addition, the locking member, which consists of the locking member, base member, and operating member, is fitted to the slide rail using the elastic force of the synthetic resin, so separate processes such as screwing and riveting are required. Not only is assembly efficiency high, but the locking device can also be easily replaced during maintenance while the slide rail is actually in use. Furthermore, since the locking device and the steady rest device can be used for both the left and right sides, there is no need to separate the management of maintenance parts between the left and right sides, resulting in good parts management efficiency.

100 Slide rail 1 Fixed side rail 11 Upper and lower bent edges 12 Board 2 Moving side rail 21 Upper and lower bent edges 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 Projecting piece 603b Passing recess 603c Contact surface 604 Elastic member 605 Retaining piece 61 Operating member 611 Rotating base 614 Locking protrusion 614a Engagement lock portion 614b Guided inclined portion 617 Operating arm portion 618 Guide groove 62 Steady rest device 7 Locking member 71 Fixed side upper and lower fitting protrusions 71a Contact receiving surface 72 Fixed portion 721 Fitting protrusion 722 Opening hole 73 Engagement Stop projection 731 Guide inclined portion 732 Contact locking portion

Claims (1)

It mainly consists of a fixed side rail that is fixed to the main body such as a rack, an intermediate rail that is slidably arranged on the fixed side rail, and a movable side rail that is arranged so that it is slidable on the intermediate rail. In a locking device consisting of a locking member provided on a stationary side rail and a locking member provided on a movable side rail, the locking member can be freely engaged and detached from the locking member. and a base member, and an operation member that enables the movable rail to slide by releasing the lock from the locking member, and the base member is fitted and attached to the movable rail, and the base member is fitted and attached to the movable rail. does not have a support part for pivotally supporting the operating member, and the operating member is not directly supported and supported on the moving side rail but is supported on the base member, and the operating member is By inserting the retaining piece provided on the base member into the guide groove provided in the base member, the tilt of the operating arm is regulated even when the operating arm is tilted in the left and right direction. A locking mechanism for a slide rail, characterized in that the operating member cannot be easily removed from the base member.

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