JP7231926B2 - Bi-directional drawer type slide rail - Google Patents

Description

The present invention includes a first outer member, a second outer member, a first inner member slidably held by the first outer member with balls, and a ball slidably held by the second outer member. a held second inner member, a first ball retainer that rotatably holds the ball on the first outer member side, and a second ball retainer that rotatably holds the ball on the second outer member side, By connecting the first inner member and the second inner member, the slide rail is extended in two stages to increase the amount of sliding, and the slide can be pulled out (extended/retracted) in both forward and backward directions. Regarding rails.

Conventionally, the applicant of the present application has implemented a double slide rail with a large sliding amount that can be pulled out (extended/retracted) in both forward and backward directions (see Patent Document 1). This slide rail has protrusion prevention stoppers attached to the front and rear ends that prevent the inner member from protruding in the opposite direction to the extended side, which occurs when the slide rail is retracted from the extended state where the slide rail is pulled out. is equipped with.
However, since this function is only to prevent the inner rail from protruding, it is not possible to maintain the most contracted state of the slide rail. It was necessary to provide a stopper. In addition, when the slide rail is retracted from the extended state, there is a problem that the slide rail extends beyond the most contracted state and extends to the opposite side.

Japanese Patent No. 3713403

SUMMARY OF THE INVENTION An object of the present invention is to provide a bi-directional pull-out type slide rail capable of maintaining a contracted state.

In order to solve the above problems, the present invention is configured as a first means to provide a first outer member, a second outer member, and a first inner member slidably held by the first outer member with a ball. a second inner member slidably held by a ball on the second outer member; a first ball retainer rotatably holding the ball on the first outer member side; and the ball on the second outer member side. and a second ball retainer for rotatably holding the first inner member and the second inner member integrally formed, with the first outer member and the second outer member respectively extending forward and backward with respect to the inner member. In a bi-directional drawer type slide rail that is slidable in both directions, the inner member is prevented from moving independently in the contracted state of the slide rail, and the outer member that extends and moves moves in the direction opposite to the extension movement side. , a movement prevention stopper operated by a stopper mechanism that prevents the inner member from extending beyond the most contracted state of the inner member, the movement prevention stopper comprising a fixing portion fixed to the inner member side, and at least the fixing portion An elastic portion extending from the portion toward the extension side of the slide rail, and a locking body that locks the end of the first outer member or the second outer member at the tip of the elastic portion. The member and the second outer member have bent edges on sides facing each other, and are provided with pressure receiving portions pressed by surfaces on sides facing each other in the vertical direction, and the stopper mechanism is operated by pressing of the pressure receiving portions. When the slide rail is contracted, the pressure-receiving portion protrudes toward the opposite side of the pressing surface from the side opposite to the surface that presses the pressure-receiving portion.

In order to solve the above problems, the present invention is configured as a second means, in addition to the first means, the first outer member and the second outer member are arranged separately in the vertical direction, and the first inner member and a second inner member are arranged in the vertical direction according to the arrangement of the outer member, and are connected so as to be able to move integrally to form a slide rail, and a movement prevention stopper is arranged in the vertical direction. It is provided between the upper and lower portions of the inner member and the second inner member.

In order to solve the above problems, the present invention constitutes a third means, in addition to the first means or the second means, a first outer member and a second outer member for pressing the movement prevention stopper pressure receiving portion. The pressing surface of the member is the outer surface side of the bending edge of the outer member facing the ball sliding groove.

According to the configuration as the first means of the present invention, it is possible to maintain the contracted state of the slide rails and to temporarily stop the contracted state of the slide rails when the elongated slide rails are contracted.

According to the configuration as the second means of the present invention, in addition to the configuration as the first means, the movement prevention stopper can be placed between the top and bottom of the first outer member, the inner member body and the second outer member. Therefore, the horizontal (left and right) dimension of the movement prevention stopper can be reduced, so that the horizontal (right and left) dimension of the slide rail as a whole can be reduced.

According to the configuration as the third means of the present invention, in addition to the configuration as the first or second means, with a simple configuration, the first inner members are arranged apart in the vertical direction. and a second inner member.
Moreover, since the ball sliding surface is not used, it is possible to prevent the ball sliding surface from being damaged and the grease applied to the ball sliding surface from being removed.

FIG. 3 is a perspective view of the slide rail in the most retracted state; FIG. 3 is a perspective view of the slide rail in the fully extended state; FIG. 2 is a cross-sectional view of the main part of the slide rail; FIG. 3 is an exploded perspective view of the slide rail; FIG. 5 is an enlarged view of part A in FIG. 4 ; FIG. 4 is an exploded perspective view of the movement prevention stopper; Explanatory drawing which shows the most contracted state of a slide rail. Explanatory drawing which shows the extension process of a slide rail. Explanatory drawing which shows the maximum extension state of a slide rail. Explanatory drawing which shows the contraction process of a slide rail. The side view which shows the 2nd Example of a slide rail. The side view which shows the 3rd Example of a slide rail. Detailed view of the anti-movement stopper.

A first outer member and a second outer member, a first inner member slidably held by the first outer member with balls, and a second inner member slidably held by the second outer member with balls. a member, a first ball retainer that rotatably retains the ball on the first outer member side, and a second ball retainer that rotatably retains the ball on the second outer member side; A first inner member and a second inner member are integrally formed by a connecting member that connects the two inner members, and the first outer member and the second outer member are provided on both sides in the front-rear direction of the inner member. In a slidable bi-directional drawer type slide rail, a first outer member and a second outer member are arranged apart from each other in the vertical direction, and the first inner member and the second inner member are aligned with the arrangement of the outer members. The inner member is prevented from moving independently in the contracted state of the slide rail, and the outer member, which extends and moves, separates the inner member from the extension moving side. On the opposite direction side, a movement prevention stopper that operates a stopper mechanism that prevents the inner member from extending beyond the most contracted state of the inner member is vertically arranged between the first inner member and the second inner member. and the movement prevention stopper has an elastic part extending from the fixing part to the extension side of the slide rail, and a locking part that engages the end of the first outer member or the second outer member at the tip of the elastic part. A body is provided, and a pressure receiving portion is provided that is pressed by bent edges of the first outer member and the second outer member on sides facing each other and faces on sides facing each other in the vertical direction when the slide rail is extended, By pressing the pressure receiving portion, the stopper mechanism is operated, and in the contracted state of the slide rail, the pressure receiving portion is positioned closer to the pressing surface than the side opposite to the surface pressing the pressure receiving portion of the bent edge. The pressing surfaces of the first outer member and the second outer member that protrude toward the opposing side and press the pressure-receiving portion of the movement-preventing stopper are the outer surfaces of the bent edges of the outer members that face the ball sliding groove.

The present invention will now be described with reference to the accompanying drawings. For the sake of convenience, the left-right direction in FIG. 7, that is, the sliding direction, will be described as the front-rear direction, the up-down direction in FIG. 3 as the height direction, and the left-right direction in FIG. 3 as the horizontal direction. In FIG. 1, reference numeral 100 denotes a slide rail of the present invention, and the slide rail 100 includes a first outer member 1, a second outer member 2 provided vertically apart from the first outer member 1, A first inner member 3 freely inserted into the first outer member 1, a second inner member 4 freely inserted into the second outer member 2, the first outer member 1 and the first inner member. a first ball retainer 5 provided between 3; a second ball retainer 6 provided between the second outer member 2 and the second inner member 4; Balls 5A rotatably held by the first ball retainer 5, and balls 6A rotatably held by the second ball retainer 6 between the second inner member 4 and the second outer member 2. , an inner member body 7 configured by connecting the first inner member 3 and the second inner member 4, and first movement prevention stoppers 8 and second movement prevention stoppers 9 provided at the front and rear ends of the inner member body 7. It is configured.

The first outer member 1 has a substrate 11 made of a strip-shaped metal plate, and ball sliding grooves 12, 12 in the longitudinal direction on the inner surface formed by curving both ends of the substrate 11 on the short side into an inward arc shape. The refracted edges 13, 13 form a substantially C-shaped cross section. Stoppers 14 , 14 of the first inner member 3 are provided at the front and rear end portions of the substrate 11 by bending a portion of the substrate 11 inward.

The second outer member 2 has a substrate 21 made of a strip-shaped metal plate, and ball slide grooves 22, 22 in the longitudinal direction on the inner surface formed by curving both ends of the substrate 21 on the short side in an inward circular arc shape. The refracted edges 23, 23 form a substantially C-shaped cross section. Stoppers 24 , 24 of the second inner member 4 are provided at the front and rear end portions of the substrate 21 by bending a portion of the substrate 21 inward.
In the embodiment, the second outer member 2 has the same shape as the first outer member 1, but the length and vertical height may be changed depending on the specifications of the article using the slide rail.

The first inner member 3 includes a substrate 31 made of a strip-shaped metal plate having a length shorter than that of the first outer member 1 and having a size that can be inserted into the first outer member 1, and both ends on the short side of the substrate 31. A C-shaped cross section is formed by bending edges 33, 33 which are curved in an arcuate direction and have ball sliding grooves 32, 32 in the longitudinal direction of the outer surface.
Then, the front and rear ends of the substrate 31 are bent to form stopper portions 34 , 34 that contact the extension side ends of the first ball retainer 5 .

The second inner member 4 includes a substrate 41 made of a belt-shaped metal plate having a length shorter than that of the second outer member 2 and having a size that can be inserted into the second outer member 2, and both ends of the short side of the substrate 41 as outsides. A C-shaped cross section is formed by bent edges 43, 43 which are curved in an arcuate direction and have ball sliding grooves 42, 42 in the longitudinal direction of the outer surface.
Then, the front and rear ends of the substrate 41 are bent to form stopper portions 44, 44 that come into contact with the extension side end portions of the second ball retainer 6. In the embodiment, the second inner member 4 is It has the same type as the inner member 3, but depending on the specifications of the article using the slide rail, the length and vertical height may be changed according to the outer member.

The first inner member 3 and the second inner member 4 are fixed to the inner member connecting member 70 and integrally formed to form the inner member body 7 .
The inner member connecting member 70 is made of a steel plate and has a plate-like rectangular first inner member connecting portion 701 formed to have a length slightly shorter than the length of the first inner member 3 in the sliding direction. The inner member body reinforcing portion 702 is formed by horizontally bending the lower end portion, and the second inner member 4 is formed by bending the other end of the inner member body reinforcing portion 702 on the side of the first inner member connecting portion 701 downward. It is formed of a plate-shaped rectangular second inner member connecting portion 703 that is slightly shorter than the length in the sliding direction (see FIG. 4).

As shown in FIGS. 3 and 4, the first inner member 3 and the substrate 31 part of the inner member body 7 are located near the upper end of the inner member body reinforcing part 702 side of the first inner member connecting part 701 of the inner member connecting member 70 . , and the second inner member 4 is fixed by the base plate 41 portion near the lower end of the second inner member connecting portion 703 on the side of the inner member body reinforcing portion 702 .
That is, the first inner member 3 and the second inner member 4 are arranged side by side in the vertical direction with the inner member connecting member 70 interposed therebetween.

The first ball retainer 5 is made of a strip-shaped metal plate and has a size that can be inserted between the first outer member 1 and the first inner member 3 and has a length of about one-third the length of the first outer member 1 . , substrate 51 and refracting edges 52, 52, and a plurality of balls 5A, . . .

The second ball retainer 6 is made of a strip-shaped metal plate and has a size that can be inserted between the second outer member 2 and the second inner member 4 and has a length of about one-third the length of the second outer member 2 . , a substrate 61 and refracting edges 62, 62, and a plurality of balls 6A are rotatably held at several positions in the longitudinal direction of the refracting edges 62, 62, respectively.
In the embodiment, the second ball retainer 6 is of the same type as the first ball retainer 5, but the length and vertical height are changed according to the outer member depending on the specifications of the article using the slide rail. Sometimes.

Since the first movement-preventing stopper 8 and the second movement-preventing stopper 9 are of the same type, only the first movement-preventing stopper 8 will be described.
The first movement prevention stopper 8 is composed of a stopper body 80 and rollers 801 , 801 rotatably supported by the stopper body 80 via rotary shafts 802 , 802 .

As shown in FIG. 6, the stopper body 80 has fixed through holes 811a, 811a, and is formed by legs 811, 811 spaced apart in the vertical direction, and spaced portions of the legs 811, 811. A U-shaped fixing portion 81 having a notch 812, a rectangular rod-like elastic portion 82 extending from the fixing portion 81 in the direction in which the slide rail is pulled out, and the distal end portion of the elastic portion 82 being spaced apart in the left-right direction. Arranged arms 831, 831 extending in the vertical direction, fixed shaft holes 831a, 831a provided through the arms 831, 831 in the horizontal direction, and rollers 801, 801 in the arms 831, 831. A roller holding portion 83 having a concave portion 832 into which is inserted is integrally formed of synthetic resin.

The roller 801 is made of synthetic resin and formed in a cylindrical shape having a through shaft hole 801a in the center.
Then, the rollers 801 and 801 are inserted into predetermined positions of the concave portion 832 of the stopper body 80, the rotating shaft 802 is inserted through the fixed shaft holes 831a and 831a, the through shaft hole 801a of the roller 801 is passed through, and the opposite side is fixed. It is inserted up to the shaft holes 831a, 831a, and the tip of the rotary shaft 802 is crushed and fixed so that the rotary shaft 802 does not drop off from the arm portions 831, 831a. In this state, the roller 81 is attached to the stopper body 80 so as to be rotatable about the horizontal axis.

A first ball retainer 5 holding a plurality of balls 5A is attached to the first outer member 1 so as to be slidable inside the first outer member 1, and a stopper 14 of the first outer member 1 is cut and raised. Contact between the stopper 14 and the end surface of the first ball retainer 5 prevents the first ball retainer 5 from coming off the end surface of the first outer member 1 .

Then, the first inner member 3 of the inner member body 7 is slid from the end portion of the first ball retainer 5 and inserted between the plurality of balls 5A arranged to face each other vertically.
Then, the stopper 34 at the end of the first inner member 3 is bent. As described above, since the first ball retainer 5 is prevented from coming off the end face of the first outer member 1, the contact between the stopper 34 and the end face of the first ball retainer 5 causes the first inner member 3 to move to the first position. 1 can be prevented from coming off from the end face of the outer member 1.
In the case of the slide rail holding the balls with such a ball retainer, the ball retainer also moves while rolling the balls by about half the amount of sliding movement of the outer member or the inner member.

In this state, when the inner member body 7 is on the fixed side, the first outer member 1 can protrude and slide in both the front and rear directions of the first inner member 3 .
Then, the end surface of the first ball retainer 5 in the sliding direction comes into contact with the stopper 34 in the sliding direction of the first inner member 3, the movement of the first ball retainer 5 stops, and the sliding direction of the first outer member 1 is stopped. The stopper 14 on the opposite side contacts the end surface of the first ball retainer 5 opposite to the sliding direction, the movement of the first outer member 1 stops, and the first outer member 1 moves against the first inner member 3. It becomes the maximum extension state.
As a matter of course, when the first outer member 1 is fixed, the first inner member 3 protrudes and slides in both the front and rear directions of the first outer member 1 .
Incidentally, the stopper 34 of the first inner member 3 may be eliminated, and the end portion of the first inner member connecting portion 701 may be provided with a bent edge to have the same function as the stopper 34 .

Then, the second outer member 2, the second ball retainer 6, and the second inner member 4 are assembled in the same manner.
As described above, the first inner member 3 and the second inner member 4 are arranged side by side in the vertical direction with the inner member connecting member 70 interposed therebetween. The outer members 2 are also arranged side by side in the vertical direction.

As shown in FIG. 7, the state in which the centers of the first outer member 1, the inner member body 7, and the second outer member 2 in the longitudinal direction are aligned is the most contracted state of the slide rail 100. As shown in FIG.
In this state, when the first outer member 1 is on the fixed side and the second outer member 2 is on the moving side, when the second outer member 2 is extended, as described above, the second inner member 4 is moved to the second position. The outer member 2 is in the most stretched state (the state shown in FIG. 8). When the second outer member 2 is further extended, the stopper 24 on the retraction side of the second outer member 2 pushes the second inner member 4 (inner member body 7) toward the extension side. When the second inner member 4 (inner member body 7) is pushed out to the extension side, the first inner member 3 slides to the extension side with respect to the first outer member 2 on the fixed side.
Then, as described above, the first inner member 3 is in the maximum extension state with respect to the first outer member 1, and the slide rail 100 is in the maximum extension state (the state shown in FIG. 9).
Even if the second outer member 2 is extended to the opposite side, the slide rail 100 will be in the maximum extension state on the opposite side by the same action, so that the slide rail 100 can be pulled out to both sides.

When the slide rail 100 is contracted from the maximum extension state of the slide rail 100, the inner member body 7 may exceed the maximum contraction state and protrude in the direction of retraction. is prevented by the first movement prevention stopper 8 and the second movement prevention stopper 9.

The first movement prevention stopper 8 is inserted from the front end face of the inner member connecting member 70 so that the end of the inner member body reinforcing portion 702 of the inner member connecting member 70 is inserted into the notch 812 of the fixing portion 81 . In this state, the leg portions 811, 811 sandwich the inner member body reinforcing portion 702 from above and below, and the leg portions 811, 811, the first inner member connecting portion 701, and the second inner member connecting portion 703, respectively. The mounting surface side of the inner member is in surface contact.
Then, using the mounting holes provided in the first inner member connecting portion 701 and the second inner member connecting portion, and the fixing through holes 811a of the leg portions 811, the inner member body 7 is appropriately attached with rivets, screws, or the like. and the fixing portion 81 of the stopper body is fixed.

That is, since the inner member body reinforcing portion 702 is vertically sandwiched between the leg portions 811, 811, the fixing portion 81 of the first movement prevention stopper 8 can be prevented from swaying in the vertical direction, and the inner member body reinforcing portion 702 can be horizontally moved. The dimension between the mounting side of the first inner member 3 of the first inner member connecting portion 701 and the mounting side of the second inner member 4 of the second inner member connecting portion 703 in the direction and the leg portion 811 of the first anti-movement stopper 8 are set to be the same in the horizontal direction, and the legs 811 and 811 are sandwiched between the first inner member connecting portion 701 and the second inner member connecting portion 703, so that the first movement prevention stopper 8 is fixed. Horizontal vibration of the portion 81 can also be prevented.

Also, the rollers 801, 801 of the first movement prevention stopper 8 are in a state of protruding vertically from the fixed portion. The roller 801 is a locking body that locks onto the end of the outer member, and when the slide rail 100 is in the most contracted state, a part of the upper roller 801 is attached to the lower bending edge 13 of the first outer member 1 . and a part of the lower roller 801 is located just in front of the end face of the upper bending edge 13 of the second outer member 2 .
For this reason, each outer member contacts the roller 801 when extended, so that the outer member cannot be easily extended.

A second movement-preventing stopper 9 having the same shape as the first movement-preventing stopper 8 is attached to the opposite end side of the inner member body 7 in the front-rear direction so as to be symmetrical with the first movement-preventing stopper 8 .
In this state, the slide rail 100 has the first outer member 1 and the second outer member 2 vertically arranged. Therefore, since the first outer member 1 and the second outer member 2 do not overlap in the horizontal direction (lateral direction), it is possible to reduce the thickness of the slide rail in the horizontal direction (lateral direction). In addition, the horizontal thicknesses of the first movement prevention stopper 8 and the second movement prevention stopper 9 are also set to dimensions within the thickness dimension of the slide rail.
Therefore, the articles attached to the first outer member 1 and the second outer member 2 need only consider about half the thickness compared to the case where the first outer member 1 and the second outer member 2 overlap in the horizontal direction. It is possible to increase (widen) the dimension in the direction.

When the first anti-movement stopper 8 and the second anti-movement stopper 9 are installed, the respective rollers 801 , 801 are aligned with the end surface of the lower bending edge 13 of the first outer member 1 and the upper bending edge of the second outer member 2 . Since it is located on the extension side of the end face of the edge 13, the outer member cannot be easily extended, and the inner member body 7 cannot be easily extended relative to the outer member. In the case of this inner member body 7, when stretched, the rollers 801, 801 on the side opposite to the stretched side come into contact with the end faces of the outer member to prevent it from easily stretching.
Further, in this embodiment, the highest points of the upper rollers 801, 801 protrude upward from the ball sliding groove 12 side of the bent edge 13 of the first outer member 1, and the lowest points of the lower rollers 801, 801. is set to protrude downward from the ball sliding groove 22 side of the bent edge 23 of the second outer member 2 .

The first anti-movement stopper 8 and the second anti-movement stopper 9 attached in this way act as follows.
First, when the first outer member 1 is on the fixed side and the second outer member 2 is on the moving side, the inner member body 7 and the second outer member 2 are in the most contracted state (the state shown in FIG. 7) of the slide rail 100. However, as described above, the rollers 801 and 801 prevent it from easily moving.
Then, when the second outer member 2 is extended, the end surface of the bending edge 23 of the second outer member 2 contacts the lower roller 801 . When the roller 801 is moved further, the roller 801 is pushed upward while rotating, and the elastic portion 82 of the stopper body 80 is elastically deformed to bend upward while resisting the pushing force, and the roller 801 bends the second outer member 2. The second outer member 2 can be stretched because the roller 801 moves over the end surface of the edge 23 and comes off the end surface of the bending edge 23 of the second outer member 2 .
Since the elastic portion 82 exerts a restoring force to its original state due to its elastic force, the roller 801 is pressed against the upper surface of the bending edge 23 of the second outer member 2 by the restoring force (state shown in FIG. 8).

With this lower roller pushed up, the upper roller 801 protrudes further forward of the extension side end face of the bending edge 13 of the first outer member 1 .
Therefore, the inner member body 7 is slidable on the extension side, but on the contraction side, the upper roller 801 contacts the extension side end face of the flexing edge 13 of the first outer member 1 and the lower side. The upper roller 801 cannot move downward because it is pressed against the top surface of the flexing edge 23 .
Therefore, even if the second outer member 2 is contracted, the inner member body 7 will not protrude in the contraction direction beyond the most contracted state.

When the second outer member 2 is further extended, the second outer member 2 is extended while the roller 801 is rolled on the upper surface of the bending edge 23 . When the second outer member 2 is fully extended and the second inner member 4 (inner member body 7) is pushed (pulled) to the extension side, the upper roller 801 on the contraction side moves the bending edge 13 of the first outer member 1. , and is pushed downward opposite to the movement prevention stopper 8 on the extension side. Then, the elastic portion 82 was elastically deformed in the same manner as the movement prevention stopper 8 on the extension side, and the roller 801 passed over the bent edge 13 on the lower side and was pressed against the bottom surface of the bent edge 13 by the restoring force of the elastic portion 82. In this state, the inner member body 7 becomes expandable.
When the most extended second outer member 2 is extended from this state, the inner member body 7 slides in the extension direction while rolling the roller 801 on the lower surface of the bending edge 13, and the slide rail 100 is fully extended. state.

Thus, the rollers are pressed by the bent edges of the facing sides of the first outer member 1 and the second outer member 2 . In this embodiment, the upper bent edge of the second outer member 2 facing the lower bent edge of the first outer member 1 is the pressing portion of the roller, but in the case of the second embodiment shown in FIG. , the lower bending edge of the second outer member 2 facing the upper bending edge of the first outer member 1 is set as a pressing surface.
In the case of the third embodiment shown in FIG. 12, the first inner member 3 and the second inner member 4 are symmetrically arranged and connected back-to-back, and are diagonally aligned with the upper bending edge of the first outer member 1 . The lower bending edge of the facing second outer member 2 is set as a pressing surface, and the second outer member diagonally facing the lower bending edge of the first outer member 1 is provided on the opposite side of the slide rail in the front-rear direction. 2 is set as the pressing surface.

Next, when the second outer member 2 is contracted from the maximum extension state of the slide rail 100 , the second outer member 2 is contracted with respect to the inner member body 7 and the inner member body 7 is contracted with respect to the first outer member 1 . also shrinks.
These movements during contraction are not constant due to the load applied to the slide rail, and the second outer member 2 may contract first, the inner member body 7 may contract first, and so on. , the second outer member 2 and the inner member body 7 may contract simultaneously.

When the second outer member 2 is in the most contracted state with respect to the inner member body 7 , the contraction-side end face of the bending edge 23 of the second outer member 2 contacts the contraction-side lower roller 801 . At this time, if the inner member body 7 is not in the most contracted state with respect to the first outer member 1, the contraction-side second movement prevention stopper 9 is pushed downward, so the second outer member 2 is The lower roller 801 on the contraction side cannot be pushed up, and the second outer member 2 stops in the most contracted state with respect to the inner member body 7 (state shown in FIG. 10).

When the inner member body 7 is in the most contracted state with respect to the first outer member 1, it is possible to push up the lower roller 801 on the contracted side, but the lowest point of the lower roller 801 is , the bending edge 23 on the upper side of the second outer member 2 protrudes downward from the ball sliding groove 22 side. Since a force is required to retract the rollers 801 of the second movement prevention stopper 9 upward again, when the slide rail 100 is contracted from the extended state to the most contracted state, the end surface of the contracted side of the refracted edge 23 is , can be temporarily stopped by contacting the lower roller 801 on the contraction side.

On the other hand, when the inner member body 7 is in the most contracted state with respect to the first outer member 1 , the extension-side end surface of the bending edge 13 of the first outer member 1 contacts the extension-side upper roller 801 . At this time, if the second outer member 2 is not in the most contracted state with respect to the inner member body 7, the movement prevention stopper 8 on the extension side will be pushed upward. The first outer member 1 cannot push down the upper roller 801 on the extension side, and the inner member body 7 stops in the most contracted state with respect to the first outer member 1 . Therefore, the inner member body 7 does not protrude in the direction opposite to the extension direction.
When the second outer member 2 is in the most contracted state with respect to the inner member body 7, it is possible to push down the upper roller 801 on the extension side, but the highest point of the upper roller 801 is the first outer member. Since the flexing edge 23 on the lower side of the member 1 protrudes upward from the ball sliding groove 22 side, in order to extend the inner member body 7 in the direction opposite to the extension direction from the most contracted state, it is necessary to use the movement prevention stopper again. Since a force is required to retract the rollers 801 of 8 downward, in the process of retracting the slide rail 100 from the extended state, when the slide rail 100 reaches the most contracted state, the end face of the extended side of the bending edge 13 is positioned on the upper side of the extended side. It can be temporarily stopped by contacting the roller 801 .

In this way, if the topmost portion of the pressure receiving portion, which is the portion pushed up or down by the bending edge of the outer member of the roller 801, is set so as to protrude toward the opposite surface side of the pressing surface of the bending edge, the first In order to release the locking state of the first outer member 1 or the second outer member 2 from the end face of the refracting edge, the end face of the refracting edge presses the top of the pressure receiving portion of the roller 801 and moves from the end face of the refracting edge. Since it is necessary to retract the locking bodies of the prevention stoppers 8 and 9, i.e., the rollers 801, a large force for elastic deformation is required against the elastic force of the elastic portions 82 of the movement prevention stoppers 8 and 9, as described above. In addition, it is possible to prevent the inner member body 7 from easily extending with respect to the outer member.
Therefore, when the extended slide rail is contracted, it can be temporarily stopped in the most contracted state of the slide rail. It is possible to prevent it from easily opening to the opposite side due to the momentum when it is opened.
In addition, when approaching the most contracted state, when the elastically deformed movement prevention stoppers 8 and 9 (elastic portion 82) are restored, there is also an effect that the most contracted state of the slide rail can be easily understood by the feeling of vibration. .

The force for retracting the roller of the movement prevention stopper can be changed by the elastic force of the elastic portion 82 of the first movement prevention stopper 8 and the second movement prevention stopper 9 and the amount of protrusion of the roller 801 . Naturally, when the elastic force and the amount of protrusion of the rollers are increased, the force for extending the outer member from the most contracted state of the slide rail 100 or the force for extending the inner member increases, and the slide rail 100 is in the extended state. In the process of contracting from the beginning, the force to temporarily stop when reaching the maximum contraction state becomes large.
Conversely, if the elastic force and the amount of protrusion of the rollers are reduced, the force for extending the outer member from the most contracted state of the slide rail 100 or the force for extending the inner member is decreased, and the extension of the slide rail 100 is reduced. In the process of contracting from the state to the contraction state, the force to temporarily stop when it reaches the most contracted state can also be reduced, so it is possible to extend to the opposite side without stopping once when it reaches the most contracted state. is.

In the details of the present invention described above, the first outer member 1 is the fixed side and the second outer member 2 is the movable side. You can also
In addition, the inner member body 7 can be fixed side, and when the inner member body 7 is fixed side, the first outer member 1 and the second outer member 2 can individually slide in the front-rear direction. However, in this case, when one of the outer members extends, the movement prevention stopper operates to prevent the other outer member from extending in the same direction, so only one outer member can extend.
Therefore, for example, when separate drawers are attached to the first outer member 1 and the second outer member 2, it is possible to prevent the two drawers from being pulled out in the same direction at the same time.

100 slide rail 1 first outer member 12 ball sliding groove 13 refracting edge 2 second outer member 21 substrate 22 ball sliding groove 23 refracting edge 3 first inner member 4 second inner member 5 first ball retainer 6 second ball retainer 7 inner member body 70 inner member connecting member 701 first inner member connecting portion 702 inner member body reinforcing portion 703 second inner member connecting portion 8 first movement prevention stopper 80 stopper main body 801 roller 801a through shaft hole 802 rotating shaft 81 fixed Part 811 Leg 811a Fixed through hole 812 Notch 82 Elastic part 83 Roller holding part 831 Arm 831a Fixed shaft hole 832 Recess 9 Second movement prevention stopper

Claims (3)

A first outer member and a second outer member, a first inner member slidably held by the first outer member with balls, and a second inner member slidably held by the second outer member with balls. a member, a first ball retainer that rotatably retains the ball on the first outer member side, and a second ball retainer that rotatably retains the ball on the second outer member side; A bi-directional pull-out type slide rail in which two inner members are integrally formed, and a first outer member and a second outer member are slidable on both sides in the front-rear direction with respect to the inner member, in which the slide rail is contracted. A stopper that prevents the inner member from moving independently in a state and prevents the inner member from extending beyond the most contracted state of the inner member in the opposite direction to the extending movement side by the extending outer member. The mechanism has a movement prevention stopper that operates, and the movement prevention stopper includes a fixed portion that is fixed to the inner member side, an elastic portion that extends from at least the fixed portion to the extension side of the slide rail, and a first elastic portion at the tip of the elastic portion. It has a locking body that locks to the end of the outer member or the second outer member, and when the slide rail is extended, the bent edges on the sides of the first outer member and the second outer member that face each other and are mutually A pressure-receiving portion is provided that is pressed by surfaces on sides facing each other in the vertical direction, and the pressing of the pressure-receiving portion activates a stopper mechanism. A two-way drawer type slide rail characterized by protruding toward the opposite side of the pressing surface from the opposite side opposite to the pressing surface. The first outer member and the second outer member are arranged apart from each other in the vertical direction, and the first inner member and the second inner member are movable together while being arranged in the vertical direction according to the arrangement of the outer members. 2. The bi-directional pull-out slide rail according to claim 1, wherein the slide rail is connected and a movement prevention stopper is provided between the top and bottom of the first inner member and the second inner member that are vertically arranged. The pressing surface of the first outer member and the second outer member that presses the pressure receiving portion of the movement prevention stopper is the outer surface side of the bent edge of the outer member that faces the ball sliding groove. 2. The bi-directional drawer slide rail according to claim 2.

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