JP2013236775A - Automatic draw-in device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic draw-in device to be used in a slide rail and also used even in a small space without affecting the stroke of a drawer or the like.SOLUTION: An automatic draw-in device includes a draw-in guide member attached to a fixed body and an engagement member attached to a movable body. The draw-in guide member includes: a draw-in guide groove; a guide locking groove; a locking body having a locking projection fitted and inserted into the draw-in guide groove and guide locking groove; and a torsion coil spring. The engagement member includes: an engagement portion for moving a locking projection from a draw-in side end of the draw-in guide groove to the guide locking groove; and an escape guide surface for moving the locking projection positioned at the guide locking groove toward a draw-in guide groove side so as to be locked to the engagement portion, and drawing in the movable body together with the engagement member by the repulsion force of the torsion coil spring.

Description

  The present invention relates to an automatic pull-in device particularly used for a slide rail such as a drawer.

Conventionally, a number of such automatic retraction devices have been provided.
As a typical example, as shown in Prior Art Document 1 (Patent Document 1), in a three-member rail type slide rail automatic retracting device, the inner surface of the rearmost part of a fixed side rail (outer rail) connected to a cabinet or the like And a slot composed of a first part and a second part formed at the rearmost part of the moving side rail (inner rail) connected to the drawer and the like.
The housing has an elongated shape in the front and rear direction having opposing side walls, a front wall, a rear wall, and an upper wall, and a slot composed of a main vertical portion and a horizontal portion is formed in the upper wall.
Further, a guide pin, a spring, and an actuator guide member are housed inside, and the compression coil spring and the actuator guide member rotate with respect to the rear wall together with the guide pin.
The actuator guide member is engaged with the second edge of the second portion of the slot in a state where the moving side rail is housed in the fixed side rail.

When the moving side rail is pulled out, the second edge of the second portion of the slot moves the actuator guide member forward while compressing the compression coil spring along the main longitudinal direction portion of the slot.
When the moving side rail is pulled out to a predetermined position and the actuator guide member reaches the front end of the main longitudinal portion of the slot, the actuator guide member is moved along the second edge of the second portion of the slot, Is rotated together with the guide pin about the rear wall portion to which the is attached as a rotation center, and moves to the lateral portion of the slot of the housing.
When the moving side rail is further pulled out, the actuator guide member comes out of the slot and stays in the lateral portion of the slot in a state where the energy of the compressed spring is accumulated.

Next, when the pulled-out moving side rail is housed in the fixed side rail, the actuator guide member enters the first part of the slot, and when the moving side rail is housed further, the actuator guide member is moved to the second part of the slot. The first edge moves from the horizontal portion of the slot to the main vertical portion.
Then, the compressed energy of the compression coil spring is released, and the actuator guide member engages with the second edge of the second portion of the slot to move the moving side rail together and retract automatically.

  That is, since the housing is attached to the inner surface of the rearmost part of the fixed side rail (outer rail), the intermediate rail is limited to a length equal to or less than the length obtained by subtracting the length of the housing from the fixed side rail. There was a drawback that the stroke of the article (slide rail) was reduced.

Further, the actuator guide member rotates together with the guide pin about the rear wall of the housing as a rotation center, moves from the main vertical portion of the housing slot to the horizontal portion, and stays in a state where the compression energy of the spring is accumulated. Therefore, in order to reliably maintain the accumulation of the compression energy of the spring, it is necessary to increase the lateral movement distance of the actuator guide member and increase the engagement area between the actuator guide member and the lateral portion of the slot. .
However, the lateral movement of the actuator guide member is performed by the rotation of the guide pin with the rear wall of the housing as the rotation center. Therefore, if the dimension between the rear wall of the housing and the actuator guide member is not long, the actuator guide The movement dimension of the member cannot be made large, and the length of the housing and the vertical dimension are inevitably large.
That is, when a reliable performance is required, there is a problem that the housing is inevitably enlarged and the length of the intermediate rail is shortened and the stroke of the drawer is reduced.

On the other hand, if the dimension between the rear wall of the housing and the actuator guide member is short, the movement dimension of the actuator guide member is small, so that the engagement area between the actuator guide member and the lateral portion of the slot is small, and the compression coil spring is compressed. Since energy storage cannot be reliably maintained, there is a limit to reducing the length of the housing.
Accordingly, the automatic pull-in position of the moving rail cannot be appropriately selected according to the use location so as to be close to the final storage position of the moving rail according to the use location.

Further, the lateral movement of the actuator guide member is performed by the rotation of the guide pin with the rear wall of the housing as the center of rotation, so that for the reasons described above, the housing becomes large and is exposed and attached to the outside. It was not preferable in terms of appearance, and had to be attached to the inner surface of the rearmost part of the fixed side rail (outer rail).

And, if the slot corresponding to the actuator guide member of the housing is formed in a separate member and attached to the moving rail, it cannot be processed within the thickness of the slide rail, and protrudes to the drawer side connected to the moving rail, The outside dimensions of the drawers that fit inside the cabinet had to be reduced.
Therefore, in order to maintain the outer size of the drawer at a predetermined size, the slot for moving the actuator guide member must be formed directly at the rear end of the moving rail, and the general slide rail and the automatic pull-in function Since the shape of the moving rail is different in the slide rail having, an automatic pull-in function cannot be added to a general slide rail as necessary.

In order to solve the above problem, an automatic pull-in device shown in Prior Art Document 2 (Patent Document 2) is provided. In other words, a pull-in guide member that is detachably connected to the upper surface of the upper bent edge of the fixed rail of the slide rail, and a removably connected link to the moving-side rail via the connecting bracket at a position corresponding to the pull-in guide member. It is comprised from the engaging member.

  The pull-in guide member includes a pull-in guide groove formed in the moving direction of the moving rail, a case body having a locking groove continuously provided at the front end of the pull-in guide groove, and a moving-side rail along the pull-in guide groove. A guide rod disposed on the case body in the moving direction of the guide, a locking body fitted on the guide rod, movable in the moving direction of the moving rail, and having a locking projection facing the pull-in guide groove, and the guide rod And a compression coil spring located on the pulling side of the locking body.

  On the other hand, the engaging member is engaged with the engaging projection during the initial movement of the moving side rail and moves the engaging body forward while compressing the compression coil spring along the retracting guide groove, and the front end of the retracting guide groove. A locking protrusion for moving the locking protrusion to the locking groove, and the locking protrusion is locked by the repulsive force of the coil spring when the moving rail is retracted, and the locking member engaging surface that pulls the moving rail together with the engaging member; It has a predetermined distance from the front side of the engaging body engaging surface, and has an escape guide surface that retracts the engaging protrusion from the engaging groove and moves it to the guiding groove when the moving body is stored. The return elastic leg and the deformation notch for elastically deforming the return elastic leg are connected to the rear end of the pull-in guide groove so that the guide is retracted. Abuts against the locking protrusion located at the rear end of the groove, and the elasticity of the return elastic leg By rotating the locking member to guide the relief surface for contact with the locking projection in the locking body engaging surface, it is provided continuously to the rear of the locking body engaging surface of the engaging member.

And in the said structure, although it can attach directly to a fixed body and a mobile body, it has the characteristics that a retraction function can also be added later, but a retraction guide member and an engagement member are the slide rails. Since it is attached to the outside, it is not preferable in appearance.
Furthermore, since the engaging member moves in the sliding direction outside the slide rail, in order to secure this moving space, an empty space with a predetermined width in the sliding direction must also be secured above the location where the slide rail is attached. I must.
That is, there is a problem that it cannot be used in a narrow space.

And since it is the structure which uses a coil spring (tensile coil spring or compression coil spring) and makes a coil spring arrange | position in the slide direction of a slide rail in order to make drawing-in movement with both prior art documents 1 and 2, of automatic drawing-in apparatus The dimension in the slide direction is the length of the coil spring (the pull-in dimension) from the pull-in start position to the pull-in end position (the prior art document 1 is the original length of the coil spring, and the prior document 2 is the length by which the coil spring is compressed). The length plus the length is required as a dimension in the sliding direction of the automatic retracting device.
In other words, the automatic retracting device can be compactly formed, has little effect on the stroke of the drawer, etc., can be added later without being exposed to the outside, and provides an automatic retracting device that can be used even in a small space The purpose of doing was not fully achieved.

Special table 2003-53660 gazette JP 2011-24665 A

The present invention can be configured compactly with a simple structure, can be manufactured inexpensively with few members without affecting the stroke of drawers, etc., and is generally manufactured without being exposed to the outside of the slide rail. An object of the present invention is to provide an automatic retracting device that can be used not only in a narrow space but also in an automatic retracting function as needed.

Therefore, in order to solve the above problems, the present invention is configured as the first means. In the automatic retracting apparatus that automatically retracts the moving body drawn from the fixed body from the predetermined position to the fixed body, the automatic retracting apparatus is A pull-in guide member attached to the fixed body, and an engaging member attached to the movable body. The pull-in guide member includes a pull-in guide groove formed in the sliding direction of the movable body, and a pull-out side end portion of the pull-in guide groove. A guide latching groove provided in a row, a latch body having a pull-in guide groove and a latch projection for inserting the guide latch groove, and a torsion coil spring. When moving from the closed state, it is locked to the locking protrusion, and the locking protrusion is brought close to one end side while applying a twist to the torsion coil spring along the pulling guide groove, and the pulling guide groove is pulled out. The engaging portion that moves the locking protrusion from the guide to the guide locking groove, and when the moving body is stored, the locking protrusion that is located in the guide locking groove is pulled in and pushed toward the guide groove to engage the locking protrusion. A torsion coil spring having an escape guide surface for drawing the moving body together with the engaging member by the repulsive force of the torsion coil spring, and the torsion coil spring being held immovably at a predetermined position; It protrudes in the direction of the locking body from the portion, and has a spring first leg portion that pivots and shifts around the coil portion as the locking body moves, and always biases the locking body in the storage direction.

Next, in order to solve the above problems, the present invention is configured as the second means, in addition to the structure as the first means, the guide locking groove is pulled out from the pull-out side end portion of the pull-in guide groove. It is inclined by a predetermined angle in the direction.

  Next, in order to solve the above problem, the present invention is configured as the third means, in addition to the first means or the second means, in addition to the first means. The leg part is inserted through a locking through hole provided in the locking body.

  Next, in order to solve the above-mentioned problem, the present invention is configured as the fourth means, in addition to the configuration as the third means, and the locking projection is farthest from the coil portion, and the locking body is locked. It is formed in the locking body at the position where the through holes overlap.

  According to the configuration of the first means of the present invention, the coil portion of the torsion coil spring is held immovable at a predetermined position, the first leg portion is protruded toward the locking body, and the locking body is moved. Thus, when the locking projection of the locking body moves toward the drawing-out side of the guide groove, the first leg is When the coil part is loaded with a twist, the coil part is rotated in the pulling direction around the coil part, and when the locking projection is positioned in the guide locking groove, the locking projection is moved upward together with the locking body.

That is, since a torsion coil spring is used as a means for applying a pulling force, unlike a conventional coil spring (a tension coil spring or a compression coil spring), it is orthogonal to the slide direction, not the slide direction of the slide rail. Therefore, the length of the pull-in guide member in the slide direction is not affected by the length of the coil spring as in the past, and the length from the pull-in start position to the pull-in end position (retraction length) As long as it can be secured, it can be manufactured in a very compact manner, and even if it is incorporated inside the slide rail, the stroke of the drawer or the like can be made larger than before.

  Furthermore, since the present invention uses a torsion coil spring and holds the coil portion in a non-movable position at a predetermined position, a step force acts in the direction in which the first leg portion of the spring rotates in the storage direction. In the state where the protrusion is positioned in the guide locking groove, the coil portion is positioned on the side of the locking protrusion, so that the pulling guide groove (downward) is careless from the state where the locking protrusion is positioned in the guide locking groove. Without being moved, the retracting function can be provided in a stable state.

In addition, since a torsion coil spring is used, there is no need to construct a holding cylinder or holding rod for linearly extending or shortening the coil spring as in the case of using a conventional coil spring, so the number of parts is small. Therefore, the structure can be simple, and the assembly is easy and inexpensive.
Further, since it can be incorporated in the slide rail, it can be used even if there is only a space for mounting the slide rail.

Furthermore, since the coil portion is held immovably in a predetermined posture, the pull-in guide member can be formed in a height dimension corresponding only to the length of the first leg portion of the spring, and the whole is made compact. Can do.
In addition, if only the space where the coil part is located is formed large in the thickness direction, coil springs with different winding numbers can be selected and used as appropriate, so automatic pull-in with optimum pull-in force depending on the place of use A device can be obtained.

Next, according to the second means of the present invention, in addition to the above-described effect, the guide locking groove is inclined at a predetermined angle from the front end portion of the pull-in guide groove. In a state where the end of the guide groove has been reached, the step force of the first leg acts in the direction of pushing up the locking projection along the guide locking groove.

Further, when the moving body is stored, the guide locking groove is inclined at a predetermined angle forward from the front end portion of the pull-in guide groove, so that the locking protrusion is brought into the pull-in guide groove side by the escape guide surface of the engaging portion. When pushed, the pulling force works at the same time as the inertial force at the time of storage weakens, so there is no sudden discomfort that is suddenly drawn at the time of storage operation.

Next, according to the configuration of the third means of the present invention, in addition to the effect of the configuration as the first means, or the effect of the configuration as the second means,
Since the first leg portion of the spring is inserted through a locking through hole provided in the locking body, the first spring leg portion and the locking body are reliably linked, and the locking body pulls the guide groove in the horizontal direction. Even if it moves, the first leg portion of the spring penetrates the locking through-hole and comes out upward, so that it does not interfere with the pull-out and pull-in movement.

Next, according to the fourth means of the present invention, in addition to the effect of the third means, the first leg of the spring penetrates the locking through hole of the locking body, The stop projection is located on the same straight line as the first leg portion and is formed on the locking body at a position farthest from the coil portion. Since the locking body rotates so that most of the locking hole is located on the coil part side in the state where the locking hole is positioned on the drawer side end, the pulling guide groove and the guide are hardly affected by the size of the locking body. The pull-in guide member can be configured in a dimension corresponding to the length of the locking hole, and can be manufactured compactly as a whole.

It is a perspective view of the contracted state of the slide rail provided with this invention. It is a perspective view of the extended state of the slide rail provided with this invention. It is a rear view of the slide rail provided with this invention. It is a basic sectional view of a slide rail. It is a principal part disassembled perspective view of the automatic drawing-in apparatus seen from the movement side rail direction by the drawer side. It is a principal part disassembled perspective view of the automatic drawing-in apparatus seen from the fixed side rail direction on the drawer side. It is a principal part exploded perspective view of a drawing-in guide member, an engagement member, and a torsion coil spring seen from the fixed side rail direction on the drawer side. It is explanatory drawing which shows the state by which the movement side rail was drawn. It is explanatory drawing which shows the state which the movement side rail was pulled out and the latching protrusion moved to the drawer side edge part of the guide latching groove. It is description which shows the positional relationship of a latching body and an engaging member in the state by which the movement side rail was pulled out. It is explanatory drawing which shows the state which the movement side rail was accommodated and the escape guide surface of the engaging member pushed down the latching protrusion, and was engaged with the latching | locking part. It is explanatory drawing which shows the state which the movement side rail was accommodated in the state which the latching protrusion is located in the accommodation side edge part of the drawing-in guide groove, and the auxiliary | assistant engagement part contact | abutted to the latching protrusion. It is explanatory drawing which shows the state which a latching protrusion pushes up the return elastic leg, and a latching protrusion gets over the 1st pushing-up inclined surface. It is explanatory drawing which shows the state which the movement side rail was further accommodated and the latching protrusion pushed down by the return elastic leg latched to the auxiliary | assistant engagement part. It is explanatory drawing which shows the state which the movement side rail was pulled out in the state which the latching protrusion latched to the auxiliary | assistant engagement part, and the latching protrusion reached the drawer | drawing-out side edge part of the guide latching groove. It is a perspective view of the contracted state of the slide rail provided with 2nd Example of this invention. It is a perspective view of the state in which the slide rail provided with 2nd Example of this invention is extending | stretching. It is principal part sectional drawing of the slide rail of 2nd Example of this invention. It is a principal-part exploded perspective view of the fixed side rail and the drawing-in guide member of the second embodiment as viewed from the moving side rail direction on the drawer side. It is a principal part disassembled perspective view of the drawing-in guide member of 2nd Example seen on the drawer side from the fixed side rail direction.

The present invention relates to an automatic pulling apparatus that automatically pulls a moving body pulled out from a fixed body into a fixed body from a predetermined position. The automatic pulling apparatus includes a pulling guide member attached to the fixed body and an engagement attached to the moving body. The pull-in guide member includes a pull-in guide groove formed in the sliding direction of the moving body, a guide locking groove continuously provided at a pull-out side end of the pull-in guide groove, a pull-in guide groove, and a guide lock A locking body having a locking protrusion for inserting the groove and a torsion coil spring, and the engaging member is locked to the locking protrusion when the moving body moves from the retracted state. An engaging portion that moves the locking protrusion from the pull-out side end of the pull-in guide groove to the guide locking groove while applying a twist to the torsion coil spring along the pull-in guide groove and moving the protrusion. Is stored The locking projection located in the guide locking groove is pulled in and pushed toward the guide groove side, and the locking projection is locked to the engaging portion, and the moving body is pulled together with the engaging member by the repulsive force of the torsion coil spring. The torsion coil spring has a coil portion that is held immovably at a predetermined position, protrudes from the coil portion toward the locking body, and moves around the coil portion as the locking body moves. It has a first spring leg portion that is pivotally shifted and always urges the locking body in the storing direction, and the guide locking groove is inclined at a predetermined angle in the pulling direction from the pulling side end of the pulling guide groove, and the spring first The leg portion penetrates the locking through hole provided in the locking body, the locking projection is the farthest from the coil portion, and the locking body is formed at the position where the locking through hole of the locking body overlaps It is.

Hereinafter, a first embodiment will be described in detail with reference to the accompanying drawings.
In FIGS. 1 and 2, the left diagonally downward direction is the drawer side, the right diagonally upward direction is the storage side, and both the drawer side and storage side directions are the sliding directions.
1, 2, 3, 4, 5, and 6, reference numeral 1 indicates a fixed rail, reference numeral 2 indicates a moving rail, reference numeral 3 indicates an intermediate rail, and reference numeral 4 indicates a fixed side. Reference numeral 6 denotes a ball holding plate of the rail 1, and reference numeral 6 denotes a ball holding plate of the moving side rail 2. The fixed side rail 1, the moving side rail 2, the intermediate rail 3, the ball holding plates 4, 6, and the ball holding plates 4, 6 Ball 40 held rotatably on
..., 60 ..., the slide rail 100 is comprised.
Reference numeral 5 denotes a retracting guide member provided on the inner surface of the storage side end of the fixed rail 1, and reference numeral 7 is provided on the inner surface of the storage side end of the movable rail 2 corresponding to the retracting guide member 5. Reference numeral 56 denotes a torsion coil spring provided on the retracting guide member 5.

The fixed-side rail 1 includes upper and lower bent edges 11 and 11 having ball guide grooves in the longitudinal direction of the inner surface obtained by bending both short ends of a metal elongated strip into an inward arc shape, and a main body side such as furniture. The fixed side rail substrate 12 connected to the (fixed body) has a substantially C-shaped cross section.
Then, a part of the storage-side end portion of the fixed-side rail substrate 12 (slightly pulled-out side of the pull-in guide member 5) is cut and raised in the direction of the moving-side rail 2 so that the storage-side end portion of the intermediate rail 3 comes into contact therewith. A stopper 13 is formed, and a fixed side moving stopper 14 is formed in which the drawer side end of the substrate 12 of the fixed side rail 1 is bent in the direction of the moving side rail 2 and the drawer side end of the ball holding plate 4 abuts. An upper fitting relief hole 17 and a lower relief notch 18 (shown in FIG. 5) are provided at the storage side ends of the upper and lower bent edges 11, 11.

The intermediate rail 3 is of a size that can be inserted into the fixed side rail 1 and is shorter than the fixed side rail 1 by the length of the pull-in guide member 5 in the sliding direction. A fixed-side intermediate rail 30 having a substantially C-shaped cross section composed of upper and lower bent edges 31, 31 having ball guide grooves in the longitudinal direction of the outer surface with the upper and lower ends bent in an outward arc shape, and inserted into the moving-side rail 2 The movable side board 312 having the same size as the fixed intermediate rail 30 and the upper and lower sides having ball guide grooves in the longitudinal direction of the outer surface where the upper and lower ends of the moving side board 312 are bent inwardly in an arc shape. It consists of a moving side intermediate rail 300 having a substantially C-shaped cross section consisting of bent edges 311 and 311.
The fixed side substrate 32 and the moving side substrate 312 are configured to have a substantially I-shaped cross section in which the fixed side substrate 32 and the moving side substrate 312 are fixed back to back.

Then, when the slide rail 100 is fully extended, it comes into contact with the storage side end surface of the ball holding plate 4 of the fixed rail 1 via a buffer member, and is buffered on the inner surface of the fixed side storage stopper 13 when the slide rail 100 is shortest contracted. An intermediate rail storage stopper (not shown) that abuts through the member is formed at the storage side end of the fixed side substrate 32 of the fixed side intermediate rail 30 so as to protrude toward the fixed side rail 1.
When the slide rail 100 is fully extended, a stopper (not shown) at the time of pulling out the ball holding plate 6 of the moving side rail 2 that contacts the drawing side end surface of the moving side rail 2 via the buffer member moves the intermediate rail 3. The side substrate 312 is formed so as to protrude toward the moving rail 2 side at the drawer side end.

The ball holding plates 4 and 6 have the same shape opposite to each other, are sized to be inserted between the fixed rail 1, the moving rail 2 and the intermediate rail 3 by strip metal plates, and both rails 1, 2 The substrates 41 and 61 and the upper and lower bent pieces 42, 42, 62, and 62 are bent, and the substrates 41 and 61 are bent in a U-shape at the center, and both the upper and lower bent pieces 42 are formed. , 42, 62, 62, a plurality of balls 40..., 60.

The moving rail 2 has the same cross-section facing the fixed rail 1 and is formed in substantially the same length, and is formed in the longitudinal direction of the inner surface formed by bending both short ends of a metal elongated strip into an inward arc shape. The upper and lower bent edges 21 and 21 having ball guide grooves and the moving side rail substrate 22 are formed in a substantially C-shaped cross section, and are connected to a moving side member (moving body) such as a drawer.

Then, the moving side storage stopper 23 formed by bending the drawer side end of the moving side rail substrate 22 in the direction of the fixed side rail 1 and a part of the storage side end of the moving side rail substrate 22 are fixed to the fixed side rail 1. It has a stopper 24 at the time of movement side movement formed so as to protrude in the direction, and a locking member 7 of an automatic retracting device is attached to the storage side of the stopper 24 at the time of movement side movement.

The slide rail 100 of the embodiment is configured as described above, and when the slide rail 100 is fully extended, the stopper 24 contacts the storage side end surface of the ball holding plate 6 via a buffer member when the moving rail 2 moves. The end surface on the drawer side of the ball holding plate 6 abuts against a stopper (not shown) when the ball holding plate is pulled out of the intermediate rail 3 via a buffer member, and a stopper (not shown) when the intermediate rail 3 is retracted. The ball holding plate 4 is brought into contact with the storage side end surface via a buffer member, and the drawer side end surface of the ball holding plate 4 is brought into contact with the stopper 14 during movement on the fixed side through the buffer member.

On the other hand, the moving side rail is moved in the storing direction, and an intermediate rail storing stopper (not shown) formed at the storing side end of the intermediate rail 3 is connected to the storing side end of the fixed side rail 1 via the buffer member. The movable side storage stopper 23 is in contact with the stopper (not shown) of the intermediate rail through the buffer member, and is moved against the stopper (not shown). The drawer side end of the side rail 2 is located slightly closer to the storage side than the drawer side end of the fixed side rail 1, and the storage side end of the moving side rail 2 is slightly away from the storage side of the fixed side rail 1. Located on the side. (Hereafter, this state is referred to as a slide rail stop state).

On the other hand, when the slide rail 100 is used, for example, attached between the drawer and the cabinet body, the slide rail is brought into a stop state at the same time that the front plate such as the drawer comes into contact with the front surface of the cabinet body. It is very difficult from the point of view.
Therefore, the slide rail 100 is attached between the drawer and the cabinet body so that the slide rail 100 is one step before the slide rail is stopped in a drawer storage state in which the drawer front plate comes into contact with the front surface of the cabinet body and sliding of the drawer stops. It is common that
That is, the slide rail provided with the automatic pull-in device is connected between the drawer and the cabinet body so that the pull-in force is always urged even in the drawer in the drawer retracted state. (Hereinafter, this state is referred to as a slide rail regular connection state.)

Next, as shown in FIGS. 5 to 7, the retracting guide member 5 of the automatic retracting device includes a holding substrate 51, a guiding substrate 58 connected to the retaining substrate 51, and a pulling formed on the guiding substrate 58. A locking body 55 formed with a guide groove 52, a guide locking groove 53 provided continuously with the drawing side end of the pulling guide groove 52, and a locking protrusion 54 facing the pulling guide groove 52 and the guide locking groove 53. And one end is inserted through the locking body 55, and the other end is constituted by a torsion coil spring 56 held by the guide substrate 58.

As shown in FIG. 5, FIG. 6, and FIG. 7, the holding substrate 51 is attached to the fixed rail 1 and has a bottom plate portion 513 that contacts the inner surface of the substrate 12 of the fixed rail 1 and the bottom plate portion 513. The connecting protruding wall 514 formed to protrude in the direction of the moving rail 2 at the periphery, and the upper and lower folding of the fixed rail 1 connected to the storage-side end and the drawer-side end of the connecting protruding wall 514 It consists of drawer-side vertical pressure contact pieces 515 and 515 and storage-side vertical pressure contact pieces 516 and 516 that are elastically pressed against the inner surfaces of the curved edges 11 and 11.
The bottom plate 513 is attached to the fixed rail 1, and the upper protrusion 511 that fits into the upper fitting relief hole 17 and the lower protrusion 512 that fits into the lower relief notch 18. Has a fitting projection 510 (shown in FIG. 7) that fits into a fitting connection hole 121 formed at the storage side end of the substrate 12 of the stationary rail 12 at the substantially center portion in the sliding direction. Guide substrate connection holes 517 and 517 (shown in FIG. 7) to which the guide substrate 58 is connected are formed at the storage-side end of the lower protrusion 512 and the lower end of the drawer-side end of the bottom plate portion 513. In addition, a connection fitting protrusion 518 to which the guide substrate 58 is connected is provided on the connection protrusion wall 514.
Reference numeral 519 denotes a holding substrate side spring holding groove for holding a part of the torsion coil spring 56.

As shown in FIGS. 6 and 7, the guide substrate 58 is provided with a pull-in guide groove 52 and a guide locking groove 53, and an upper cover protrusion formed at a position corresponding to the upper protrusion 511 and the lower protrusion 512. 580, a base plate portion 583 having a lower cover protrusion 582, and a connecting protrusion formed on the periphery of the base plate portion 583 so as to protrude in the direction of the fixed rail 1 corresponding to the connecting protrusion walls 514, 514. A wall 584, a holding fitting protrusion 586 that holds the torsion coil spring 56, and a transition gap 587 provided above the storage side end of the pull-in guide groove 52, are flatter than the substrate portion 583. The return elastic leg 588 is formed.

The upper cover projection 580 is formed with holding substrate fitting holes 585... Corresponding to the connection fitting projections 518. Corresponding to this, a holding substrate connecting hole 589 is formed.
Reference numeral 581 denotes a guide board side spring holding groove formed corresponding to the holding board side spring holding groove 519 for holding a part of the torsion coil spring 56.

The guide locking groove 53 is connected to the drawing-side end portion of the pull-in guide groove 52 so as to be inclined upward by approximately 30 degrees in the pull-out direction, and is approximately in the middle of the slide direction of the guide lock groove 53 and the pull-in guide groove 52. The holding fitting protrusion 586 for holding the torsion coil spring 56 is located at the position of.
In the embodiment, the guide locking groove 53 is inclined 30 degrees upward in the drawing direction at the drawing side end of the drawing-in guide groove 52, but it is not necessary to limit the inclination angle to 30 degrees. However, in order to eliminate the sudden discomfort that is drawn suddenly during the storage operation, it is preferable to set between 30 degrees and 40 degrees.

The locking body 55 includes a disk-shaped sliding disk 551 having a larger dimension than the drawing-in guide groove 52 and the guide locking groove 53, and an end portion in the radial direction of the sliding disk 551 and the pull-in guide groove 52 and the guide member. It is inserted into the stop groove 53, protrudes in the direction of the moving rail 2, and is formed of a formed cylindrical projection 54 that can be engaged with and disengaged from the engaging member 7.
A locking through hole 552 is provided from the center in the thickness direction of the peripheral end surface of the sliding disk 551 through the center of the sliding disk 551 to the opposite side from the position where the locking protrusion 54 overlaps.

The torsion coil spring 56 includes a coil portion 561 that fits into the holding insertion protrusion 586, a first leg portion 562 that protrudes from the coil portion 561 toward the locking body 55, and passes through the locking through hole 552, and the coil portion 561. And a spring second leg portion 563 that is held by the holding substrate side spring holding groove 519 and the guide substrate side spring holding groove 581.

The holding substrate 51, the guide substrate 58, the locking body 55, and the torsion coil spring 56 are configured as described above, and the spring first leg 562 of the torsion coil spring 56 is locked to the locking through hole 552 of the locking body 55. The coil portion 561 of the torsion coil spring 56 is externally fitted, the second leg portion 563 is fitted into the guide board side spring holding groove 581, and the locking body 55 is The engaging protrusion 54 is inserted into the drawing-side end of the pulling guide groove 52, and the connecting fitting protrusion 518 of the holding substrate 51 and the holding substrate fitting hole 585 of the guiding substrate 58 are fitted. At the same time, the guide board connecting holes 517 and 517 and the holding board connecting hole 589 are aligned with each other, the holding board 51 and the guide board 58 are connected with a connecting screw, and the pull-in guide member 5 is assembled.

At this time, since the connecting protruding wall 514 is formed on the holding substrate 51 and the connecting protruding wall 584 is formed on the guiding substrate 58, the holding substrate 51 and the guiding substrate 58 are connected in the holding state. A gap is formed between the bottom plate portion 513 of the substrate 51 and the substrate portion 583 of the guide substrate 58, and this gap serves as a space for moving the locking body 55 and the first leg portion 562 in the guide member 5. Function.

The pull-in guide member 5 configured as described above is configured so that the upper protrusion 511 and the lower protrusion 512 are inserted into the upper fitting escape hole 17 and the lower relief notch 18 of the fixed rail 1 while the upper and lower protrusions 511 and While the pressure contact pieces 515 and 515 and the storage side upper and lower pressure contact pieces 516 and 516 are elastically pressed against the inner surfaces of the upper and lower bent edges 11 and 11 of the fixed side rail 1, By fitting the fitting protrusion 510 to 121, the fixed side rail 1 is connected.

The engaging member 7 includes a locking body substrate 72 having a size that allows the locking protrusion 54 to be inserted from the storage-side end portion and having a locking protrusion insertion groove 71 that opens in the storage-side end portion, and a locking body. The substrate 72 has vertical elastic permissible spaces 741 and 751 in the vertical direction from the moving rail 2 side end of the substrate 72, protrudes to the fixed rail 1 side, and the inner surfaces of the upper and lower folding edges 21 and 21 of the moving rail 2. The upper and lower pressure contact protrusions 74 and 75 are elastically pressed against each other, and are formed in a moving side fitting connection hole 70 formed in the moving side rail 2 at a substantially central portion on the moving side rail 2 side of the locking body substrate 72. A moving side fitting projection 700 to be fitted is formed.

A guide inclined surface 721 that guides the locking projection 54 positioned at the upper end of the guide locking groove 53 downward is continuously provided on the upper surface of the storage-side end portion of the locking protrusion insertion groove 71. An arc-shaped escape guide surface 722 that guides the inner locking projection 54 to the pull-in guide groove 52 is provided so as to protrude downward from the upper surface of the locking projection insertion groove 71 on the drawer side.
In addition, an engaging portion 731 is formed below the escape guide surface 722 and below the locking projection insertion groove 71 so as to lock the locking projection 54, and on the storage side of the engaging portion 731. An auxiliary engagement portion 732 having substantially the same shape as the engagement portion 731 is formed, and a first push-up inclined surface 733 is formed on the storage side of the auxiliary engagement portion 732 so as to be continuous with the auxiliary engagement portion 732. A second push-up inclined surface 734 having the same shape as the first push-up inclined surface 733 is formed on the drawing side of the engaging portion 732.

The engaging member 7 is formed as described above, and the upper and lower pressure contact protrusions 74 and 75 are elastically pressed against the inner surfaces of the bent edges 21 and 21 of the moving rail 2 and at the same time the moving side of the moving rail 2 is moved. The moving side fitting protrusions 700 are fitted into the fitting connecting holes 70 to be connected to the moving side rail 2. At this time, the engaging member 7 is arranged so that the locking protrusion 54 positioned in the locking protrusion insertion groove 71 is at a height position where the locking protrusion 54 is locked to the engaging portion 731 and the auxiliary engaging portion 732. Corresponding to the pull-in guide member 5, it is connected to the inner surface of the storage side end of the moving side rail substrate 22.

In the embodiment, the automatic retracting device of the present invention is attached to the slide rail 100 of the three member. However, the engaging member 7 is detachably provided on a moving body such as a drawer by screwing or the like. 7, the pull-in guide member 5 may be detachably attached to a fixed body such as a cabinet body directly by screwing or the like.
In the embodiment, the height of the guide member 5 is substantially the same as the height of the slide rail 100, but the lower protrusion 512 and the lower cover protrusion 582 are further provided on the slide rail 100. If the projecting portion is formed thick in the thickness direction below the slide rail 100 and the holding projection 586 for holding the torsion coil spring 56 is formed in this portion, the coil portion 561 having a large number of turns is formed. Even so, since it can be selected widely, it becomes possible to select the torsion coil spring 56 suitable for the place of use of the automatic retracting device (for example, the weight of the drawer).

The present invention is configured as described above, and is in a state in which the moving side rail 2 (moving body) is drawn into the fixed side rail 1 (fixed body) (the state shown in FIG. 8) in the slide rail regular connection state. By providing a gap of a predetermined size between the projection 54 and the storage-side end face of the pull-in guide groove 52, a pull-in force is always applied to the moving-side rail 2 (engagement member 7) by the repulsive force of the torsion coil spring 56. .
From this state, when the moving rail 2 (moving body) is pulled out, the locking projection 54 is engaged with the engaging portion 731 of the engaging member 7, so that the locking projection 54 moves in the pull-in guide groove 52. Move to the drawer side.

That is, as the locking body 55 moves to the drawing side, the spring first leg portion 562 of the torsion coil spring 56 guides and locks the coil portion 561 with the coil portion 561 as a center point while adding a twist to the coil portion 561. It rotates in the direction of the groove 53.
Then, until the locking projection 54 of the locking body 55 moves in the direction of the guide locking groove 53 in the retracting guide groove 52 and is positioned above the coil portion 561, the locking through hole 552 of the locking body 55 is inserted. The end portion of the inserted first spring leg 562 sequentially increases the amount of protrusion of the locking body 55 upward, and the locking protrusion 54 moves from above the coil portion 561 toward the guide locking groove 53. When this happens, the amount of upward protrusion of the locking body 55 is reduced.

Then, the locking projection 54 reaches the storage side end of the pull-in guide groove 52.
Further, when the moving-side rail 2 is pulled out, the guide locking groove 53 is inclined in the pull-out direction, so that the locking protrusion 54 moves in the guide locking groove 53 upward on the pull-out side, and the engaging portion 731 is engaged. Reach a position that deviates from

In this state, the first leg portion 562 of the torsion coil spring 56 is urged to rotate in the storing direction, and the guide locking groove 53 is inclined upward in the pull-out direction. Since the end of the guide locking groove 53 is biased in the direction of moving upward, the guide side locking groove 53 does not inadvertently move downward and is not pulled into the pull-in guide groove 52, so The joint member 7) moves in the pull-out direction. (The state shown in FIG. 10)

The locking projection 54 is formed at the radial end of the sliding disk 551, and the locking through-hole 552 passes from the center in the thickness direction of the peripheral end surface of the sliding disk 551 through the radial center. Since the stop projection 54 penetrates from the overlapping position to the opposite side, when the locking projection 54 of the locking body 55 moves in the pull-in guide groove 52 from the drawing side to the storage side, the sliding disc 551 is locked. 54 so that the locking member 55 is located at any position of the pulling guide groove 52 and the guide locking groove 53, most of the sliding disk 551 is locked. Since the protrusion 54 is located on the coil portion 561 side and is hardly affected by the size of the sliding disk 551, the size of the retracting guide member 5 in the sliding direction is coupled with the use of the torsion coil spring 56. To make it as small as possible It can be fabricated the automatic retraction device compact.

Next, when the pulled-out moving side rail 2 is housed (the state shown in FIGS. 10 to 9), the locking protrusion 54 is positioned in the locking protrusion insertion groove 71, and the moving side rail 2 is further moved. When retracted, the escape guide surface 722 of the engaging member 7 moves in the guide locking groove 53 downward and in the storing direction while abutting the locking projection 54, and eventually the pull-out guide groove 52 is pulled out. At the side end, the locking projection 54 is locked to the engaging portion 731 (the state shown in FIG. 11), and at the same time, the moving side rail 2 (the locking projection 54) is pulled by the repulsive force of the torsion coil spring 56, A part of the moving body (for example, the front plate of the drawer) comes into contact with a part of the fixed body (for example, the front surface of the cabinet), and the moving side rail 2 stops. (The state shown in FIG. 8)

On the other hand, in a state where the moving rail 2 is pulled out, the locking protrusion 54 unexpectedly deviates from the guide locking groove 52 and is positioned at the storage side end of the pulling guide groove 52. When returning to the state of, do as follows.
When the moving rail 2 is moved in the storage direction, the first push-up inclined surface 733 formed at the storage side end of the engagement member 7 comes into contact with the locking projection 54 (state shown in FIG. 12).
When the moving side rail 2 is further moved in the storage direction from this state, the first push-up inclined surface 733 acts to push the locking projection 54 upward.

Then, the locking projection 54 is pushed up by the first push-up inclined surface 733 while elastically moving the return elastic leg 588 into the change gap 587, and reaches the position where the upper end of the first push-up inclined surface 733 is overcome (FIG. 13). When the moving rail 2 is further moved in the storage direction, the locking projection 54 is locked to the auxiliary engagement portion 732 by the elasticity of the return elastic leg 588 and the repulsive force of the torsion coil spring 56. (The state shown in FIG. 14)

In this state, the locking projection 54 is in contact with the storage-side end of the pull-in guide groove 52, so that no pull-in force acts on the moving-side rail 2 (engagement member 7). In addition, there is a regular gap between the front surface of the cabinet body and the drawer front plate, but even if the drawer (moving side rail 2, engaging member 7) is moved in the storage direction, before the slide rail stops. Since the front plate of the drawer comes into contact with the front surface of the cabinet body, the engaging portion 731 of the locking member 7 cannot be moved to the position where the locking projection 54 is located.

Therefore, from this state to the state in which the locking projection 54 is held on the upper end (drawer side end) of the guide locking groove 53 by the repulsive force of the torsion coil spring 56 (the state shown in FIG. 15), the moving side again. Pull out rail 2 (drawer).
Next, the moving rail 2 is housed, and the moving body is drawn in a state where the locking projection 54 is locked to the engaging portion 731 as described above, and the moving body is stopped (the drawer front plate is attached to the cabinet body). Since a gap of a predetermined dimension is provided between the locking projection 54 and the storage-side end face of the pull-in guide groove 52 in a state of being in contact with the front surface, the moving rail 2 (engagement) is caused by the repulsive force of the torsion coil spring 56. A pulling force is always applied to the member 7).

On the other hand, the slide rail 100 is not in the slide rail regular connection state but is in a state in which the drawer is slightly shifted to the drawer side from the normal state and coupled to the movement side rail, and the movement side rail 2 is pulled out. If the locking projection 54 unexpectedly deviates from the guide locking groove 53 and is positioned at the storage side end of the retracting guide groove 52, the next step is to return the locking projection 54 to the normal state. Like that.

First, similarly to the above, the locking projection 54 is pushed upward by the first push-up inclined surface 733, and the locking projection 54 is locked to the auxiliary engagement portion 732. (The state shown in FIG. 14)

In this state, since the moving side rail and the drawer are connected with a slight deviation from the normal state to the drawer side, a gap more than normal is generated between the front surface of the cabinet body and the drawer front plate.
That is, the drawer is pulled out again (the moving side rail 2 is moved to the drawer side), and the locking projection 54 is held at the upper end (the drawer side end) of the guide locking groove 53 (the state shown in FIG. 10). Then, the drawer can be stored and a pulling force can be applied, but as a user psychology, the drawer is continuously stored so as to fill a gap formed between the front surface of the cabinet body and the front panel of the drawer.

At this time, the return elastic leg 588 is pushed up while being elastically displaced in the transition gap 587 by the second push-up inclined surface 734, and the elastic elastic force of the return elastic leg 588 is reached from the position over the upper end of the second push-up inclined surface 734. Then, the locking projection 54 is locked to the engaging portion 731 by the repulsive force of the torsion coil spring 56.
In this case, since the locking projection 54 is in contact with the storage side end of the pull-in guide groove 52, the pulling force by the torsion coil spring 56 does not act on the locking projection 54, but the drawer does not pop out carelessly. .

Next, a second embodiment will be described with reference to FIGS.
As in the first embodiment, in FIG. 16, the left diagonally downward direction is the drawer side, the right diagonally upward direction is the storage side, and both the drawer side and storage side directions are the slide directions.
16, 17, and 18, reference numeral 1 indicates a fixed rail, reference numeral 2 indicates a moving rail, reference numeral 3 indicates an intermediate rail, reference numeral 4 indicates a ball holding plate of the fixed rail 1, Reference numeral 6 denotes a ball holding plate of the moving side rail 2. The ball 40 is rotatably held by the fixed side rail 1, the moving side rail 2, the intermediate rail 3, the ball holding plates 4 and 6, and the ball holding plates 4 and 6.
..., 60 ..., the slide rail 100 is comprised.
Reference numeral 5 denotes a pull-in guide member provided on the inner surface of the storage-side end portion of the fixed-side rail 1. The engaging member of the second embodiment is the same as that of the first embodiment, and the storage-side end portion of the moving-side rail 2. The reference numeral 56 indicates a torsion coil spring provided on the retracting guide member.

As in the first embodiment, the fixed-side rail 1 has upper and lower bent edges 11 and 11 having ball guide grooves in the longitudinal direction of the inner surface obtained by bending both short ends of a metal elongated strip into an inward arc shape. The fixed side rail substrate 12 connected to the main body side (fixed body) such as furniture is formed in a substantially C-shaped cross section.
Then, the storage-side end of the fixed-side rail substrate 12 is cut and raised in the direction of the moving-side rail 2 to form a fixed-side storage stopper 13 with which the storage-side end of the intermediate rail 3 abuts. 12 is bent in the direction of the moving rail 2 to form a fixed-side moving stopper (not shown) on which the drawing-side end of the ball holding plate 4 abuts. At the end, fitting fitting holes 10 and 10 for the drawing-in guide member 5 and fitting screw holes 101 are formed.

The intermediate rail 3 is sized to be inserted into the fixed rail 1 and has a fixed side board 32 and upper and lower ends having ball guide grooves in the longitudinal direction of the outer surface where the upper and lower ends of the fixed side board 32 are bent in an outward arc shape. The fixed side intermediate rail 30 having a substantially C-shaped cross section composed of both bent edges 31 and 31 and a size that can be inserted into the moving side rail 2, and the length of the retracting guide member 5 in the sliding direction from the fixed side rail 1. The cross section is substantially composed of a moving side substrate 312 having a short length and upper and lower bent edges 311 and 311 having ball guide grooves in the longitudinal direction of the outer surface where the upper and lower ends of the moving side substrate 312 are bent inwardly in an arc shape. A flat shape different from the first embodiment, which is formed of a C-shaped moving side intermediate rail 300 and is shifted in the vertical direction to the connecting plate 301 to fix the fixed side substrate 32 and the moving side substrate 312 back to back. Formed into There.

Then, when the slide rail 100 is fully extended, it comes into contact with the storage side end surface of the ball holding plate 4 of the fixed rail 1 via a buffer member, and is buffered on the inner surface of the fixed side storage stopper 13 when the slide rail 100 is shortest contracted. An intermediate rail storage stopper (not shown) that abuts through the member is formed at the storage side end of the fixed side substrate 32 of the fixed side intermediate rail 30 so as to protrude toward the fixed side rail 1.
When the slide rail 100 is fully extended, a stopper (not shown) at the time of pulling out the ball holding plate 6 of the moving side rail 2 that contacts the drawing side end surface of the moving side rail 2 via the buffer member moves the intermediate rail 3. The side substrate 312 is formed so as to protrude toward the moving rail 2 side at the drawer side end.

Like the intermediate rail 3, the ball holding plates 4 and 6 are symmetrically shifted in the vertical direction,
It is a size that can be inserted between the fixed side rail 1, the moving side rail 2, the fixed side intermediate rail 30, and the moving side intermediate rail 300 with a strip metal plate, and about half of both rails 1 and 2. It consists of substrates 41, 61 and upper and lower bent pieces 42, 42, 62, 62 in length. The substrates 41, 61 are bent at the center into a U-shape or an inverted U-shape, A plurality of balls 40... 60 are rotatably held at several positions in the sliding direction of the curved pieces 42, 42, 62, 62.

The moving rail 2 has the same cross-section facing the fixed rail 1 and is formed in substantially the same length, and is formed in the longitudinal direction of the inner surface formed by bending both short ends of a metal elongated strip into an inward arc shape. The upper and lower bent edges 21, 21 having ball guide grooves and the moving side rail substrate 22 are formed in a C shape with a substantially reverse cross section, and are connected to a moving side member (moving body) such as a drawer.

Then, a moving side storage stopper (not shown) formed by bending the drawer side end of the moving side rail substrate 22 in the direction of the fixed side rail 1 and a part of the storing side end portion of the moving side rail substrate 22 are arranged. A first embodiment of the automatic pull-in device having a stopper (not shown) at the time of movement side movement formed so as to protrude in the direction of the fixed side rail 1 is provided on the storage side of the stopper at the time of movement side movement (not shown). The same locking member is attached.
Since the locking member of the second embodiment is the same as that of the first embodiment, the description thereof is omitted.

Next, as shown in FIGS. 19 and 20, the retracting guide member 5 of the automatic retracting device of the second embodiment is provided on the holding substrate 51, the guiding substrate 58 connected to the retaining substrate 51, and the guiding substrate 58. The formed pull-in guide groove 52, the guide locking groove 53 connected to the pull-out side end of the pull-in guide groove 52, and the lock projection 54 facing the pull-in guide groove 52 and the guide lock groove 53 are formed. The locking body 55 is constituted by a torsion coil spring 56 having one end inserted through the locking body 55 and the other end held by a guide substrate 58.

The holding substrate 51 is attached to the fixed side rail 1, and contacts the outer surface of the substrate 12 of the fixed side rail 1, and the peripheral portion of the upper half of the bottom plate portion 513 in the direction of the moving side rail 2. A connecting protruding wall 514 formed in a protruding manner, an attachment fitting hole 10, 10 formed in the fixed rail 1 of the second embodiment, corresponding to the shape of the slide rail of the second embodiment, and attachment Corresponding to the fitting screw holes 101, fitting fitting protrusions 501 and 501 formed on the lower half of the bottom plate portion 513, a connecting screw hole 502, and a lower bent edge 11 on the fixed rail 1 A lower edge protruding edge 503 that contacts the lower surface of the guide board, and a guide board connecting locking hole 504 for connecting the guide board 58.
have.

As shown in FIGS. 19 and 20, the guide substrate 58 corresponds to the connecting protruding walls 514 and 514 at the substrate portion 583 having the pull-in guide groove 52 and the guide locking groove 53 and the peripheral portion of the substrate portion 583. Then, a connecting projection wall 584 that protrudes in the direction of the fixed-side rail 1, a holding fitting projection 586 that holds the torsion coil spring 56, and a storage-side end of the retracting guide groove 52 are provided. , A transition gap 587 at the top, a return elastic leg 588 flattened from the base plate portion 583, and a connection lock projection 508 formed corresponding to the guide board connection lock hole 504. ··have. Reference numeral 581 denotes a guide board side spring holding groove for holding a part of the torsion coil spring 56. Since the guide locking groove 53, the retracting guide groove 52, the return elastic leg 588, the transition gap 587, the locking body 55, and the torsion coil spring 56 are formed substantially the same as in the first embodiment, description will be given. Is omitted.

The holding substrate 51, the guide substrate 58, the locking body 55, and the torsion coil spring 56 are configured as described above, and the torsion coil spring 56 is used in the state in which the locking body 55 is maintained for the first embodiment. The coil portion 561 is externally fitted to the holding projection 586 and the second leg portion 563 is fitted into the guide board side spring holding groove 581, and the guide board connecting locking hole 504. The connecting locking projection 508 of the guide substrate 58 is locked to assemble the pull-in guide member 5.

At this time, as in the first embodiment, since the connecting projection wall 514 is formed on the holding substrate 51 and the connecting projection wall 584 is formed on the guiding substrate 58, the holding substrate 51 and the guiding substrate 58 are connected. In this state, a gap is formed between the bottom plate portion 513 of the holding substrate 51 and the substrate portion 583 of the guide substrate 58, and this gap pulls in the locking body 55 in the guide member 5 and the first leg portion. It functions as a space 562 for movement.

The pull-in guide member 5 of the second embodiment configured as described above makes the lower end protruding edge 503 abut against the lower surface of the lower bent edge 11 of the fixed rail 1, and the fitting protrusion 501 for attachment, 501 is fitted into the mounting fitting holes 10 and 10 formed in the fixed side rail 1, and a connecting screw is screwed into the mounting fitting screw hole 101 through the connecting screw hole 502, thereby connecting to the fixed side rail 1. Is done.
The operation and effects of the second embodiment are the same as those of the first embodiment.

As described above, the present invention is not only used by being attached to a slide rail, but also a stationary body such as a cabinet body (a stationary rail when compared to a slide rail) and a drawer that is pulled out and stored in the cabinet body, or Since it can be directly attached to a moving body such as equipment (moving side rail, for example, a slide rail), it can be used in a wide range.

DESCRIPTION OF SYMBOLS 1 Fixed side rail 100 Slide rail 2 Moving side rail 3 Intermediate rail 5 Pull-in guide member 52 Pull-in guide groove 53 Guide lock groove 54 Lock protrusion 55 Lock body 56 Torsion coil spring 561 Coil part 562 Spring 1st leg part 7 Engagement Joint member 71 Locking projection insertion groove 722 Escape guide surface 731 Engagement portion 732 Auxiliary engagement portion 733 First push-up inclined surface 734 Second push-up inclined surface

Claims (4)

In the automatic retracting apparatus that automatically retracts the moving body pulled out from the fixed body to the fixed body from a predetermined position, the automatic retracting apparatus includes a retracting guide member attached to the fixed body and an engaging member attached to the moving body. The pull-in guide member is inserted into the pull-in guide groove formed in the sliding direction of the movable body, the guide locking groove connected to the pull-out side end of the pull-in guide groove, and the pull-in guide groove and the guide locking groove. A locking body having a locking projection and a torsion coil spring, and the engaging member is locked to the locking projection when the moving body moves from the retracted state, and the locking projection is pulled in and guided. A moving body is housed, and an engaging portion that moves the locking protrusion from the drawing-side end portion of the pull-in guide groove to the guide locking groove while applying a twist to the torsion coil spring along the groove. Sometimes Escape guide for pulling the locking projection located in the guide locking groove and pushing it toward the guide groove side, locking the locking projection to the engaging portion and pulling the moving body together with the engaging member by the repulsive force of the torsion coil spring The torsion coil spring has a surface and is immovably held at a predetermined position. The torsion coil spring protrudes from the coil portion toward the locking body, and rotates around the coil portion as the locking body moves. And an automatic pulling device having a spring first leg portion that constantly urges the engaging body in the storing direction. 2. The automatic pulling device according to claim 1, wherein the guide locking groove is inclined at a predetermined angle in the pulling direction from the pulling side end portion of the pulling guiding groove. The automatic pull-in device according to claim 1 or 2, wherein the spring first leg portion is inserted through a locking through-hole provided in the locking body. The automatic pulling device according to claim 3, wherein the locking protrusion is formed on the locking body at a position farthest from the coil portion and where the locking through hole of the locking body overlaps.

Images