Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
  • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
  • A47B88/40—Sliding drawers; Slides or guides therefor
  • A47B88/453—Actuated drawers
  • A47B88/46—Actuated drawers operated by mechanically-stored energy, e.g. by springs
  • A47B88/467—Actuated drawers operated by mechanically-stored energy, e.g. by springs self-closing
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
  • E05F5/003—Braking devices, e.g. checks; Stops; Buffers for sliding wings
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
  • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
  • E05F1/16—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for sliding wings
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
  • E05Y2800/20—Combinations of elements
  • E05Y2800/23—Combinations of elements of elements of different categories
  • E05Y2800/24—Combinations of elements of elements of different categories of springs and brakes
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2900/00—Application of doors, windows, wings or fittings thereof
  • E05Y2900/20—Application of doors, windows, wings or fittings thereof for furniture, e.g. cabinets

Definitions

• the present invention relates to a self-closing device for use in a bottom- attachment type slide, to which a damper is attached.
• Slides are generally classified, on the basis of their attachment manners relative to drawers, into lateral- attachment type slides to be attached to a lateral surface of a drawer, and bottom- attachment type slides to be attached to a bottom surface of a drawer.
• a self-closing mechanism for automatically closing a slide is disclosed in U.S. Patent No. 6,733,097.
• the disclosed self-closing mechanism comprises a hollow box-shaped housing, and an actuator, an elastic spring, and a guide pin penetrating through the actuator and the elastic spring, which are mounted in the housing.
• the housing has a slot consisting of a linear portion and a curved portion.
• the actuator is coupled into the slot such that it is movable along the slot.
• a self-closing device configured to be attached to a bottom- attachment type slide comprising a movable rail formed, at an outer side surface thereof, a detachable-coupling latch.
• the self-closing device according to the present invention generally comprises a housing, a movable member, and an elastic spring,
• the elastic spring comprises reduced-diameter portions having a smaller diameter than a spring body and formed at positions near both ends of the spring.
• the spring having the above described configuration has a higher durability than a conventional spring having looped ends.
• the housing comprises a body having a hollow box shape defined by an upper wall, two sidewalls, and two end walls.
• the housing body is internally formed with a movable member positioning portion having a movable member fitting structure such that the movable member is fitted into the movable member fitting structure to perform reciprocating movements along the movable member fitting structure.
• a first spring holding structure is defined at one of the sidewalls of the housing body, for the coupling of a first end of the elastic spring.
• the movable member comprises a rectilinear movement member and a rotational movement member.
• the rectilinear movement member includes a body portion and a rotational movement member coupling portion having a coupling bore.
• a second spring holding structure is formed at a first surface of the body portion, for the coupling of a second end of the elastic spring.
• the rotational movement member includes a rotating movement space having a coupling protrusion to be inserted into the coupling bore of the rotational movement member coupling portion and a latch holding structure to be coupled with the detachable-coupling latch formed at the side surface of the movable rail of the slide. As the coupling protrusion of the rotational movement member is inserted into the coupling bore of the rotational movement member coupling portion, the rotational movement member is coupled with the rectilinear movement member, to complete the movable member.
• the first end of the elastic spring is caught by the first spring holding structure of the housing and the second end of the elastic spring is caught by the second spring holding structure of the rectilinear movement member included in the movable member, and the movable member is adapted to perform reciprocating movements while being fitted into the movable member fitting structure of the movable member positioning portion defined in the housing body.
• the movable member of the self- closing device performs reciprocating movements in the movable member positioning portion of the housing body by a slide push force and a compressive force of the elastic spring.
• the movable member positioning portion is a space defined by a first end surface, a second end surface opposite to the first end surface, a first side surface, a second side surface opposite to the first side surface, and a ceiling surface (i.e. an inner lower surface of the upper wall of the housing body).
• the movable member fitting structure is formed in the ceiling surface.
• the second side surface is opened such that a side portion of the movable member located in the movable member positioning portion partially protrudes outward through the second side surface.
• the movable member coupling portion is a movable member guide groove including a straight groove and an arched groove.
• an elastic deforming portion is formed at a side of the straight groove of the guide groove.
• the elastic deforming portion comprises a flexible bar and first and second spaces defined at opposite sides of the flexible bar.
• the first and second spaces take the form of holes perforated through the upper wall of the housing body.
• the flexible bar constitutes a part of a side surface of the straight groove.
• the rectilinear movement member and the rotational movement member comprise coupling means to be coupled with the movable member fitting structure of the movable member positioning portion.
• the coupling means comprise a cylindrical coupling protrusion formed at the rectilinear movement member and first and second cylindrical protrusions formed at the rotational movement member.
• the latch holding structure comprises a first holding portion and a second holding portion.
• the self-closing device is internally provided with a damper such that the damper absorbs a part of the compressive force of the elastic spring while the movable member being moved by the elastic spring.
• a damper seating portion is formed in the housing body such that the damper having a conventional configuration is located in the damper seating portion.
• the self-closing device can allow the bottom- attachment type slide, more particularly, a drawer to be automatically moved to their completely introduced positions. Further, with the shock-absorbing effect of the damper, the drawer can be efficiently pushed into an article of furniture to the maximum extent. This has the effect of improving the outer appearance of the article of furniture.
• FIG. 1 is a perspective view of a slide, to which a self-closing device according to the present invention is attached;
• FIGS. 2 and 3 are front perspective views of the self-closing device according to the present invention, FIG. 2 illustrating an extended state of an elastic spring, and FIG. 3 illustrating a compressed state of the elastic spring;
• FIGS. 4 and 5 are rear perspective views of the self-closing device corresponding to the states shown in FIGS. 2 and 3, respectively;
• FIG. 1 is a perspective view of a slide, to which a self-closing device according to the present invention is attached
• FIGS. 2 and 3 are front perspective views of the self-closing device according to the present invention, FIG. 2 illustrating an extended state of an elastic spring, and FIG. 3 illustrating a compressed state of the elastic spring;
• FIGS. 4 and 5 are rear perspective views of the self-closing device corresponding to the states shown in FIGS. 2 and 3, respectively;
• FIG. 1 is a perspective view of a
• FIG. 6 is an exploded perspective view of the self-closing device according to the present invention.
• FIG. 7 is a perspective view of a housing of the self-closing device according to the present invention;
• FIG. 8 is a perspective view illustrating another embodiment of the housing of the self-closing device;
• FIG. 9 is a perspective view of a rectilinear movement member included in a movable member according to the present invention;
• FIG. 10 is a perspective view of a rotational movement member included in the movable member according to the present invention;
• FIGS. 11 to 14 are plan views illustrating the operation of the self-closing device according to the present invention; and
• FIG. 15 is a plan view illustrating the malfunction of the self-closing device according to the present invention.
• FIG. 1 is a perspective view of a bottom-attachment type slide 1 having a general configuration, to which a self-closing device 100 according to the present invention is attached.
• the bottom-attachment type slide 1 comprises a stationary rail 30 having a plurality of raceways 15, and a movable rail 20 configured to perform sliding movements over the stationary rail 30. Ball retainers (not shown) are located between the two rails 30 and 20 such that the movable rail 20 can perform sliding movements.
• a lower end of the stationary rail 30 is connected to a slide securing member 10 consisting of a horizontal plate 12 and vertical plates 11.
• the securing member 10 is mounted to a bottom wall and/or sidewall of the article of furniture, for example, of a desk, by use of appropriate means such as screws, and the movable rail 20 is mounted to the drawer by use of appropriate means such as screws.
• the drawer can be pushed into or pulled out of the article of furniture as the movable rail 20 of the slide 1 performs sliding movements along the stationary rail 30.
• the self-closing device 100 of the present invention is attached to the horizontal plate 12 at an appropriately selected position.
• the movable rail 20 is provided, at an outer side surface thereof, with an "L"-shaped detachable-coupling latch 25 such that the detachable-coupling latch 25 can be coupled with the self-closing device 100 according to the present invention.
• the self-closing device 100 basically comprises a housing, an elastic spring attached to a side of the housing, and a movable member attached to an inner position of the housing.
• the self-closing device may further comprise a damper, which is attached to an inner position thereof and adapted to absorb a part of a compressive force of the elastic spring when the movable member is moved by the compressive force of the elastic spring.
• the self-closing device 100 having the damper comprises a housing 110, an elastic spring 170 attached to a side of the housing 110, and a movable member 165 and a damper 190 attached to inner positions of the housing 110.
• the elastic spring 170 used in the present invention has a body having both ends
• the elastic spring 170 having the above described configuration has a lengthened lifespan that is much longer than that of a spring having loop-shaped both ends.
• the damper 190 has a general configuration including a cylinder 192 having a front expanded portion 194, and an elongated piston rod 195 protruded from one end of the cylinder 192 and having a relatively long length. It will be appreciated that any other appropriate dampers may be used to realize the present invention.
• FIGS. 2 and 3 are front perspective views of the self-closing device 100 according to the present invention.
• FIG. 2 illustrates a state wherein the slide is pulled out (i.e. a state wherein the elastic spring of the self-closing device is extended).
• FIG. 3 il- lustrates a state wherein the slide is pushed (i.e. a state wherein the elastic spring of the self-closing device is compressed).
• FIGS. 4 and 5 are rear perspective views of the self-closing device corresponding to the states shown in FIGS. 2 and 3, respectively.
• the housing 110 has a body having a hollow box shape, the body consisting of an upper wall 111, two sidewalls 112 and 112', and two end walls 113 and 113'.
• the body of the housing 110 is provided, at both ends thereof, with appropriate securing means for securing the housing 110 to the horizontal plate 12 of the slide 1.
• the securing means include securing holes 114 and securing protuberances 118 protruded from an inner periphery of the respective securing holes 114 (See the partially enlarged parts of FIG. 2).
• the horizontal plate 12 is provided, at appropriately selected positions thereof (i.e. desired positions for the attachment of the self-closing device 100), with securing hooks (not shown).
• Each of the securing hooks is configured such that it protrudes upward through the associated securing hole 114 and has a snap-fitting recess configured to receive the associated securing protuberance 118.
• the housing 110 can be secured to the horizontal plate 12 of the slide 1.
• the body of the housing 110 may be centrally formed with a securing hole 116 and a securing protuberance 117 protruded from an inner periphery of the securing hole 116, the securing protuberance 117 having the same shape as that of the securing protuberance 118.
• This configuration is to prevent a middle portion of the housing 110, having an elongated shape, from being unintentionally lifted during operation.
• the center securing hole 116 and the securing protuberance 117 are optional items, and must not be essentially formed in the housing 110 of the self-closing device.
• the self-closing device 100 may be formed with bosses 115 (See FIG. 7) such that the bosses 115 are inserted into securing recesses (not shown) formed in appropriately selected positions of the horizontal plate 12 of the slide 1.
• FIG. 8 illustrates another embodiment of the housing 110 of the self-closing device
• the housing 110 is perforated with screw holes 119 such that the self-closing device can be secured by use of screws or rivets.
• a recess 119' having a space for receiving a head portion of the screw or rivet.
• the damper seating portion 120' includes a damper cylinder insertion recess 121, a damper front expanded portion insertion recess 122, and damper piston rod insertion recesses 123.
• the self-closing device 100 having the basic configuration may have no damper 190. Accordingly, in the self- closing device 100 having the basic configuration, the damper seating portion 120' is not formed in the body of the housing 110. In this case, the overall length of the self- closing device 100 can be shortened as much as the length of the damper seating portion 120'. However, the shortened length of the self-closing device causes a corresponding reduction in the length of the elastic spring and thus, has a problem in that the self-closing device has only a reduced self-moving force. Alternatively, the self- closing device may be configured such that any appropriate recess is formed in the body of the housing at a position corresponding to the damper seating portion 120' for the sake of reducing material costs, or the housing simply has a block shape.
• the movable member positioning portion 120 is a rectangular space defined by a first end surface 124, a second end surface 125 opposite to the first end surface 124, a first side surface 126, a second side surface 136 opposite to the first side surface 126, and a ceiling surface 127.
• the ceiling surface 127 is an inner lower surface of the upper wall 111 of the housing body
• the second side surface 136 is an imaginary surface because a corresponding side of the space is opened. Accordingly, referring to FIGS. 2 and 3 illustrating the reference numeral 136, the second side surface 136 looks like a side opening.
• the movable member 165 is located in the movable member positioning portion 120 such that a side portion of the movable member 165 partially protrudes outward through the second side surface 136.
• the ceiling surface 127 of the movable member positioning portion 120 is formed with a movable member fitting structure.
• the movable member fitting structure takes the form of a guide groove consisting of a straight groove 133 and an arched groove 134 located at a side of the straight groove 133.
• the arched groove 134 is located near the second end surface 125 of the movable member positioning portion 120 and inclined to be far away from the second end surface 126 as a tip end of the arched groove 134 closes to the first side surface 126.
• the movable member 165 is fitted into the guide groove 132 and adapted to perform reciprocating movements along the guide groove 132 as will be described hereinafter.
• the ceiling surface 127 of the movable member positioning portion 120 is further formed with an elastic deforming portion 128 at a position adjacent to the straight groove 133 of the guide groove 132.
• the elastic deforming portion 128 includes an elongated thin flexible bar 129, and first and second spaces 130 and 131 defined at opposite sides of the flexible bar 129.
• the above described guide groove 132 takes the form of a dented portion that is formed in the ceiling surface 127 (more particularly, formed in the inner lower surface of the upper wall 111 of the housing body), but not perforated through the ceiling surface 127.
• the first space 130 and the second space 131 are openings perforated through the upper wall 111 constituting the body of the housing 110. Accordingly, referring to FIGS.
• the movable member positioning portion 120 and the guide groove 132 are invisible, but the elastic deforming portion 128 is visible.
• the flexible bar 129 is aligned in a longitudinal direction of the straight groove 133 such that the flexible bar 129 constitutes a part of a side surface of the straight groove 133.
• the elastic deforming portion 128 Upon malfunction of the self-closing device, the elastic deforming portion 128 has a function of assisting the self-closing device 100 to easily return its normal operating state. Such a function of the elastic deforming portion 128 will be described hereinafter in more detail.
• the housing 110 is formed, at a side of the body thereof, more particularly, at a position of the sidewall 122, with a first spring holding structure 137 for holding one end of the elastic spring 170 (See FIG. 2).
• the first spring holding structure 137 internally defines a spring end receiving portion 138, into which the end 172 of the elastic spring 170 is inserted, and a spring reduced-diameter portion receiving portion 139 into which the reduced-diameter portion 174 of the elastic spring 170 is inserted.
• a second spring holding structure 152 having a spring end receiving portion 154 and a spring reduced-diameter portion receiving portion 153, which have the same shapes as those of the spring end receiving portion 138 and the spring reduced-diameter portion receiving portion of the first spring holding structure 137.
• the second spring holding structure 152 constitutes a part of a rectilinear movement member 150.
• the movable member 165 includes the rectilinear movement member 150 and a rotational movement member 140.
• FIG. 9 includes a body portion 151 and a rotational movement member coupling portion 162.
• the body portion 151 of the rectilinear movement member 150 is formed, at a side thereof, with the second spring holding structure 152 and a piston rod insertion recess 156.
• the second spring holding structure 152 is a portion to be coupled with the other end of the elastic spring 170.
• the second spring holding structure 152 internally defines the spring end receiving portion 154, into which the end 172 of the elastic spring 170 is inserted, and the spring reduced-diameter portion receiving portion 153 into which the reduced-diameter portion 174 of the elastic spring 170 is inserted.
• the piston rod insertion recess 156 is configured to receive the piston rod 195 of the damper 190 and is arranged parallel to the second spring holding structure 152.
• the piston rod insertion recess 156 has a semi-circular cylindrical shape corresponding to the outer appearance of the piston rod 195, but is not limited thereto. It will be appreciated that the piston rod insertion recess 156 may have other shapes so long as the piston rod 195 can be inserted thereinto. In the self- closing device having the basic configuration without the damper 190, of course, there is no piston rod insertion recess 156.
• the other side of the body portion 151 i.e. an opposite side of the second spring holding structure 152, is configured to come into direct contact with the horizontal plate 12 of the slide 1, so as to perform sliding movements on the horizontal plate 12 during reciprocating movements of the movable member 165.
• a part of the body portion 151, which comes into direct frictional contact with the horizontal plate 12 is provided with protruded sliding guides 155.
• the protruded sliding guides 155 serve to reduce the contact area between the body portion 151 and the horizontal plate 12 as much as possible, in order to reduce a frictional resistance during sliding movements to the maximum extent.
• the rotational movement member coupling portion 162 of the rectilinear movement member 150 is configured to be coupled with the rotational movement member 140 that will be described hereinafter.
• the rotational movement member coupling portion 162 includes a straight-profiled surface 168, an oblique-profiled surface 167 inclined with respect to the straight-profiled surface 168, and a connecting surface 169 connecting both the surfaces 168 and 167 to each other.
• the connecting surface 169 is a gently-curved surface having an arched profile.
• a coupling bore 163 is perforated through the rotational movement member coupling portion 162.
• FIG. 10 is a plate-shaped member having an approximately triangular shape.
• the plate-shaped rotational movement member 140 is formed, at a side thereof, with a latch holding structure 141 such that the latch holding structure 141 is engaged with the detachable-coupling latch 25 formed at the side surface of the movable rail 20 when the slide 1 is moved to its introduction position.
• the latch holding structure 141 includes a first holding portion 142 and a second holding portion 143.
• the rotational movement member 140 of the movable member 165 is further formed with an oblique-profiled surface 149 extended from the first holding portion 142.
• the role of the oblique-profiled surface 149 will be described hereinafter.
• the plate-shaped rotational movement member 140 is formed, in a surface thereof, with a rotating movement space 145 (See FIG. 6).
• a boundary of the rotating movement space 145 is defined by first and second surfaces 148 and 148' perpendicular to each other and a connecting surface 148" connecting both the surfaces 148 and 148' to each other.
• the connecting surface 148" is an arched gently-curved surface and has a concave shape mating with the convex connecting surface 169 of the rotational movement member coupling portion 162 of the rectilinear movement member 150.
• a coupling protrusion 146 is located in the rotating movement space 145 and configured to be inserted into the coupling bore 163 of the rotational movement member coupling portion 162.
• the above described rectilinear movement member 150 and the rotational movement member 140 have coupling means configured to be fitted into the movable member fitting structure, namely, the movable member guide groove 132, formed in the ceiling surface 127 of the movable member positioning portion 120.
• the coupling means take the form of protrusions to be fitted into the movable member guide groove 132, so as to perform reciprocating movements along the guide groove 132.
• the rectilinear movement member 150 has a cylindrical coupling protrusion 160 formed at the surface of the body portion 151 where the second elastic spring holding structure 152 is formed.
• the rotational movement member 140 is formed with cylindrical first and second protrusions 144 and 147 at a surface thereof opposite to the surface where the rotating movement space 145 is formed.
• the coupling protrusion 146 of the rotational movement member 140 is inserted into the coupling bore 163 perforated in the rotational movement member coupling portion 162 of the rectilinear movement member 150, to complete the movable member 165.
• the connecting surfaces 169 and 148" of the rotational movement member coupling portion 162 and the rotating movement space 145 are positioned to face each other.
• the rotational movement member coupling portion 162 of the rectilinear movement member 150 can be seated and rotated in the rotating movement space 145 formed around the coupling protrusion 146 of the rotational movement member 140.
• the rotational movement member 140 can perform efficient rotating movements while being coupled to the rectilinear movement member 150.
• the rotational movement member 140 is rotated until the first and second surfaces 148 and 148' of the rotating movement space 145 meet with the straight-profiled surface 168 and the oblique- profiled surface 167 of the rotational movement member coupling portion 162.
• the maximum rotating angle ⁇ See FIGS.
• the rotating angle is determined by an angle between the arched groove 134 and the straight groove 133 of the guide groove 132.
• the movable member 165 is designed such that the actual rotating angle is 25 degrees. In other words, the angle between the straight-profiled surface 168 and the oblique -profiled surface 167 of the rotational movement member coupling portion 162 is 65 degrees.
• the rectilinear movement member 150 has a first contact surface 158 and a second contact surface 159 (See FIG. 9) coming into contact with the ceiling surface 127 and the first side surface 126 of the movable member positioning portion 120, respectively.
• the movable member 165 is reciprocally movable along the guide groove 132.
• the damper 190 is inserted into the damper seating portion 120' formed in the body of the housing 110.
• the self-closing device 100 of the present invention is completed.
• FIGS. 11 to 15 are plan views of the self-closing device 100, from which the housing 110 is omitted.
• the damper 190, the rectilinear movement member 150, and the rotational movement member 140 are shown by solid lines, and the guide groove 132, the arched groove 134, the straight groove 133, and the elastic deforming portion 128 of the movable member positioning portion 120 are shown by dotted lines (the reference numeral of the elastic deforming portion is shown only in FIG. 15).
• the first protrusion 144 of the rotational movement member 140 is separated from the arched groove 134 of the guide groove 132, to thereby be located in the straight groove 133 of the guide groove 132. Since the elastic spring 170 is coupled to the side of the rectilinear movement member 150 connected to the rotational movement member 140 while being kept in an extended state, the movable member 165, i.e. both the rectilinear movement member 150 and the rotational movement member 140, are moved into their completely introduced positions by the force of the elastic spring 170. In this case, the detachable-coupling latch 25 of the movable rail 20 is caught by the first holding portion 142 (FIG. 14).
• the piston rod 195 of the damper 190 is inserted into the piston rod insertion recess 156 formed in the rectilinear movement member 150 while the movable member 165 being moved into the completely introduced position thereof.
• the damper 190 applies a damping force to the movable member 165.
• the drawer can be gently and automatically moved into its completely introduced position despite the large compressive force of the elastic spring 170.
• the detachable-coupling latch 25 of the movable rail 20 is released from the first holding portion 142 of the latch holding structure 141, to thereby be further moved to the pull-out position (FIG. 11).
• the first protrusion 144 is caught in the arched groove 134 of the guide groove 132, therefore not be separated from the guide groove 132, and the elastic spring 170 is kept in an extended state, to prepare the following introduction operation.
• the self-closing device of the slide may have malfunction under certain unexpected situations.
• the movable member 165 may be unintentionally moved to its introduction position (See FIGS. 3 and 14) under any unexpected situations, for example, if any obstacles are jammed between the slide and the self-closing device.
• the self-closing device according to the present invention is capable of returning its normal operating state despite the above abnormal situation.
• the drawer is not allowed to be automatically moved to its introduction position even if the drawer is pushed.
• the detachable-coupling latch 25 of the movable rail 20 meets with the oblique-profiled surface 149 extended from the first holding portion 142 of the latch holding structure 141, thereby applying a force onto the oblique-profiled surface 149.
• the rotational movement member 140 is forcibly pushed in a direction designated by the arrow A.
• the first protrusion 144 of the rotational movement member 140 pushes the flexible bar 129, formed in the ceiling surface 127 of the movable member positioning portion 120 of the housing 110, toward the direction of the arrow A. Since the first space 130 and the second space 131 are formed at opposite sides of the flexible bar 129, the flexible bar 129 is elastically bent into the second space 131. Simultaneously, the detachable-coupling latch 25 passes over the oblique-profiled surface 149, and is again be caught by the latch holding structure 141. In this way, the self- closing device can restore its normal operating state for preparing the pulling-out of the drawer.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Drawers Of Furniture (AREA)

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Cited By (30)

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• 2007
  • 2007-03-14 KR KR1020070024742A patent/KR101129567B1/ko not_active IP Right Cessation
  • 2007-03-14 WO PCT/KR2007/001239 patent/WO2007111424A1/en active Application Filing

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