WO2017121094A1 - 滑轨防脱装置及其所应用的家具滑轨 - Google Patents

滑轨防脱装置及其所应用的家具滑轨 Download PDF

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Publication number
WO2017121094A1
WO2017121094A1 PCT/CN2016/092218 CN2016092218W WO2017121094A1 WO 2017121094 A1 WO2017121094 A1 WO 2017121094A1 CN 2016092218 W CN2016092218 W CN 2016092218W WO 2017121094 A1 WO2017121094 A1 WO 2017121094A1
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WIPO (PCT)
Prior art keywords
rail
arm
ball
groove
barb
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PCT/CN2016/092218
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English (en)
French (fr)
Inventor
林旭文
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林旭文
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Application filed by 林旭文 filed Critical 林旭文
Publication of WO2017121094A1 publication Critical patent/WO2017121094A1/zh

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00General construction of drawers, guides and guide devices
    • A47B2210/0002Guide construction for drawers

Definitions

  • the invention belongs to the technical field of slide rails for furniture, and particularly relates to a slide rail anti-off device and a furniture slide rail applied thereto.
  • sliding components such as drawers and movable platens that are driven to be telescopically slid relative to the main body of the furniture by a user's pulling or pushing operation.
  • the conventional sliding structure between the sliding component and the furniture body is provided with a sliding rail on the furniture body, and a plurality of pulleys are arranged on the sliding component, so that the sliding rail is supported by the pulley
  • the upper slide allows the sliding member to be telescopically slidable relative to the furniture body.
  • This structure is obviously very simple, and it is very convenient to install and disassemble.
  • the existing solution is to provide an anti-drop device on the slide rail. It is worth noting that there is an anti-shedding device disclosed in the prior art section of Chinese Patent No. 201320361976.2.
  • This type of anti-shedding device is most common in furniture and office appliances, and the specific structure thereof includes: being disposed at the outer rail end. a card protrusion on the limit block and a resilient fork disposed on the inner rail to engage with the card protrusion.
  • the elastic fork has a substantially V-shaped shape including a right long elastic arm and a left short elastic arm, and a substantially L-shaped vacant area is disposed on a right side of the right long elastic arm.
  • the mounting screw fixes the first end of the elastic fork to the inner rail through the mounting through hole, in the installation In the state, the tail end portion of the right long elastic arm extends to the outside of the inner rail.
  • the elastic fork slides outward with the inner rail, and when the bottom of the right long elastic arm vacant area is pressed against the card protrusion, the right The long elastic dial arm rotates on the right side of the inner rail with the mounting screw as the first right side of the shaft, thereby blocking the passage of the card protrusion and preventing the inner rail from coming off the outer rail
  • the guide rail is slid outward to prevent the sliding member mounted on the inner rail from falling out of the furniture body.
  • the tail end of the right long elastic arm can be toggled to the left to make the right long elastic arm
  • a relief passage is formed between the upright side walls of the inner rail to allow the card projection to pass. After the external force is removed, the left short elastic arm will drive the right long elastic arm to be reset.
  • Ball guides are mainly divided into two-section ball guides and three-section ball guides.
  • the earliest two-section ball guide that we can find is a ball-type drawer guide disclosed in Chinese Patent Application No.
  • 01242280.0 entitled “Ball-type Drawer Guide” which is characterized by a symmetrical opening of four
  • the inner rail of the ball groove is disposed at a top end of the other side of the bracket in a longitudinal direction, and the other side of the slot bracket has a plurality of mounting holes, and an outer rail is sleeved on the inner rail, and one of the two rails is disposed at both ends
  • Each of the two sets of ball positioning holes has a ball positioning sleeve, and the balls are placed in the ball positioning holes and are in contact with the outer and inner rails.
  • the earliest three-section ball guide solution that can be found is a three-section guide rail disclosed in the patent entitled "Three-section guide rail" of Chinese Patent Application No.
  • the above-mentioned patent application has a limit stopper provided at the inner side end, and both of them are provided with a laterally turned positioning piece on the inner side of the outer rail (also referred to as an outer rail), and A rubber buffer block is inserted outside the laterally turned positioning piece.
  • the limit stopper of this structure since the positioning piece is a sheet structure and is also unilaterally positioned, is very easy to be deformed by impact, that is, deflected toward the inner end, thereby losing the limit function.
  • the ball structure adopted between the inner, middle and outer guide rails in the above technical solution is generally a single-layer structure, and even if there is a double-layer structure, there is still a large sway gap and a problem of wear and jamming.
  • the anti-drop device disclosed in the prior art section adopts a structure in which one side is pressed against the off side and the other side forms a contraction and avoidance space.
  • the anti-off performance of the structure is unstable, and the slide rail is in the process of telescopic sliding, when accident
  • the fork also loses its anti-off function.
  • the setting of the anti-off device focuses on improving the structure of the slide rail anti-off device, so that it has stable anti-off performance and can be disassembled purposefully and conveniently by maintenance personnel.
  • the analysis of the prior art found that there are still many aspects that need to be further improved so that the structural performance and the friendly feel of the ball guide can be greatly improved without significantly increasing the manufacturing cost.
  • the present invention provides a slide rail preventing device comprising a base and a latching blade matched with the base;
  • the base includes a substrate and a pair of upright blocks standing on the substrate, that is, a left vertical block and a right vertical block, the left vertical block and the right vertical block extending in the axial direction and the left standing A evasive space is provided between the block and the right erected block;
  • the latch blade has a substantially positive plate-like reference reverse face and a reference reverse face opposite the reference forward face, and includes a head end portion provided with a connection hole and two sides from the head end portion
  • the two arms respectively drawn are the left arm and the right arm, and the left arm and the right arm extend substantially in the same direction toward the tail end and are connected at the tail end so as to be in the center of the latch blade
  • the region forms a central vacancy
  • the hook includes a right vertical side disposed in an axial direction and a right lateral side disposed at an angle to the right vertical side, the L-shaped right rotation angle of the right barb is less than or equal to 90° and oriented toward the right and the rear end ;
  • the left vertical side and the right vertical side of the latch blade can be respectively defined on the left side of the base
  • the avoidance space between the block and the right upright block, while the left and right lateral sides can simultaneously abut against the front edge of the left and right vertical blocks of the base.
  • the above feature (a) defines the overall structure of the base.
  • the substrate is first defined as a main body portion of the base, which can provide positioning support for a pair of the vertical blocks; secondly, it is also defined that the left vertical block and the right vertical block are disposed on the substrate. A convex shaped structure is thus placed (relatively abruptly) on the substrate.
  • the left vertical block and the right vertical block are arranged to extend in the axial direction, and the feature of the escape space between the left vertical block and the right vertical block first defines the structure of the vertical block, the left vertical block and the right
  • the erected block has a certain extension length in the axial direction; then it is defined that the left erected block and the right erected block are spaced apart, for which a evasive space is formed between them.
  • the axial direction is the extending direction of the slide rail on which the base is mounted. In other words, the sliding direction of the sliding rail, when the base is mounted on the sliding rail, the extending direction of the vertical block is consistent with the extending direction of the sliding rail.
  • the above feature (b) defines the overall structure of the latch blade.
  • the latching blade has a reference positive surface and a reference reverse surface opposite to the reference positive surface in a substantially plate shape, and the latching blade is substantially shaped like a plate to have a plate-shaped base body, but It is not to say that the reference front face or the reference reverse face of the plate-like base of the snap-off blade must be two outer faces that are completely parallel.
  • the reference plane refers to a positioning surface for determining a reference in the front and back sides of the latch blade, which is a surface of a front surface having a largest area among the front and back surfaces, as a flat surface and a raised surface. The relationship between the mountains, it is apparent that the datum plane defined by the present invention is similar to a flat ground. To this end, the reference surface can be a defined flat surface or a proposed design surface.
  • the head end portion provided with the connecting hole defines that the latch blade includes a head end portion, and the connecting end hole is provided with a connecting hole; the connecting hole is for connecting by means of a rivet type connecting device
  • the latch blade is positioned to a positioning mechanism on a rail, such as an inner rail. When an axial thrust or pulling force is applied to the inner rail, the axial force is transmitted to the head end portion of the latch blade by a rivet or the like, the head end being the first subject of the latch blade Force point.
  • the latch blade further includes a left arm and a right arm respectively extending on opposite sides of the head end portion and extending from the head end portion to the tail end direction of the latch blade substantially in the same direction, the left side The side arms and the right arm are coupled together at the trailing end to form a central void in the central region of the latch blade.
  • the left arm and the right arm form the elastic blade of a unitary structure, and the central axis of the connecting hole of the head end is located between the left arm and the right arm; secondly, a definition is defined
  • the two side arms of the central vacancy are the left side arm and the right side arm, and the central vacancy provides a evasive space for the left side arm and the right side arm to shift to the middle, and therefore, to the left side
  • the left and right arms can be relatively close by the central vacancy and at the same time the left and right lobes disposed thereon are also relatively close together.
  • the feature (c) defines the overall structure of the left or right barb.
  • the left or right barb of the L-shape first defines a function capable of hooking, and secondly defines a shape or structure capable of implementing a hooking function; and the left barb
  • the L-shaped left corner faces the left and the rear end directions, defining the spatial orientation of the left barb in the direction of the left side and the tail end, so that the left vertical block stuck therein can be vacant from the left side. Leaving the left barb can also be moved into the left barb in an axial direction from the tail end to the head end.
  • the right barbs are oriented in the right and tail directions, and have the same meaning.
  • the feature (d) defines a mating relationship of the left or right barb to the base.
  • the left vertical side and the right vertical side of the buckle blade can be respectively defined in the escape space between the left vertical block and the right vertical block of the base, and the effect is that the external force is not applied to affect the bullet.
  • the spacing between the left vertical edge and the right vertical edge plus the lateral thickness of the left vertical edge and the right vertical edge itself is smaller than the lateral width of the avoidance space, such that The left upright block or the right upright block of the base can be snapped into the left or right barb, respectively.
  • the central recess has a shape in the middle, when the base When the upper left vertical block or the right vertical vertical block is engaged into the left or right barb, respectively, when the left and right arms of the latching blade are forced to move toward the middle, Having the left and right arms respectively exit the left or right barb to release the buckled blade from the base; in addition, when the left or right vertical block can When the inner rail is respectively inserted into the left barb or the right barb, if an axial pulling force is applied to the inner rail in the outer direction, the pulling force passes through the head end portion and the left arm of the latch blade And the right arm is transmitted to the left barb and the right barb and is reversely blocked by the left vertical block and the right vertical block on the base, at which time the center axis of the head end portion of the spring blade is located Between the left arm and the right arm, for this purpose, the pulling force causes the left and right arms to
  • the left arm and the right arm can be made to be elastic fulcrums of each other, that is, after the left arm and the right arm are gathered from each other, it is easy to return to the original state.
  • the left and right arms and the head and tail sections of the right arm are coupled together to greatly increase the structural strength of the latching blade as a whole.
  • the left arm and the right arm can equally share the external force, which greatly reduces the strict requirements of the material of the latch blade.
  • the spring blade can be made of ordinary plastic with elasticity. As for easy damage.
  • the left barb is disposed at a substantially middle portion of the left arm, and the right barb is disposed at a substantially middle portion of the right arm.
  • a further technical solution may be that the left barb of the buckle blade is symmetrically arranged with the right barb left and right.
  • the left arm and the right arm are respectively formed in a shape having a middle width and narrowing both ends of the head and the tail.
  • the left arm and the right arm are respectively formed in a middle width shape, which can greatly increase the structural strength of the middle position, so that the structural strength of the left barb and the right barb disposed at the middle position is greatly improved;
  • the left arm and the right arm are respectively narrowed at the ends of the head and the tail, and the left arm and the right arm can be easily deformed to facilitate assembly and disassembly of the latch blade and the inner rail. .
  • a further technical solution may be that the minimum cross-sectional area of the left and right arms of the left arm and the right arm is 10% to 40% of the maximum cross section of the middle portion.
  • a further technical solution may further include: on the left arm of the latch blade, a reverse left protrusion protruding from a reverse surface, and a protrusion protruding from the reverse side The reverse right bump of the face.
  • the left vertical block and the left vertical block on the base can be further decomposed by means of the reverse left bump, the reverse right bump and the left receiving hole and the right receiving hole provided on the inner rail with them a right urging member applies a reverse force to the left arm and the right arm in a reverse direction, or a pulling force generated when the inner rail is pulled outward, through the head end of the latch blade,
  • the reverse left protrusion and the reverse right protrusion are uniformly transmitted to the left arm and the right arm of the latch blade, that is, the pulling force of the inner rail is pulled outward by the head end of the latch blade
  • the reverse left bump and the reverse right bump are shared, thereby greatly reducing the crushing and damaging action of pulling the inner rail by the pulling force of the inner rail.
  • the best solution is to correspondingly set the reverse left bump and the reverse right bump on the back of the left barb and the right barb, and let the spring of the buckle blade
  • the moments in the positive and negative directions of the side arm and the right arm have the shortest arm length, so that the left arm and the right arm of the latch blade are less likely to be damaged.
  • a guide chamfer may be respectively disposed at positions along the outer left end of the left lateral side and the right lateral side. This facilitates the introduction of the latching blades into the left and right uprights on the base.
  • the guide chamfering does not refer to a process transition fillet that must be used on the mold when manufacturing the latch blade, but a transition fillet that is larger than the turning radius of the process transition fillet.
  • a further technical solution may be that a tail end projection protruding from the reference front surface is provided at a tail end portion of the latch blade. This can greatly improve the structural strength of the tail end portion, and is not only convenient for manufacturing the mold but also for improving the structural strength of the latch blade.
  • a further technical solution may be that a positive left protrusion protruding from the reference front surface is disposed on the left arm of the buckle blade, and the left barb is formed in the forward direction.
  • the left convex block and thus the positive left convex block include a left vertical convex edge arranged in an axial direction and a left lateral convex edge arranged at an angle to the left vertical convex edge, the left vertical convex edge Forming the left barb with an angle between the left lateral flange; and providing a positive right protrusion protruding from the reference front surface on the right arm, the right barb forming On the positive right bump such that the positive right convex bump includes a right vertical convex edge arranged in an axial direction and a right lateral convex edge arranged at an angle to the right vertical convex edge, An angle between the right vertical flange and the right lateral flange forms the right barb.
  • the left barb and the right barb may be formed in various manners, wherein the first one is directly on the left side of the left arm or The right side of the right arm forms an L-shaped barb, and the vacant area where the barb is located penetrates the entire plate-shaped base of the latch blade in the forward and reverse directions;
  • the second solution is that the bullet is The side arm of the buckle blade is provided with a forward protrusion protruding from the reference forward surface, and the hook body is not only disposed at the forward convex portion but also the vacant area where the barb is located The plate-shaped base body is penetrated through the entire latching blade in the forward and reverse directions;
  • the third solution is that, on the basis of the second solution, the hook body is disposed at the positive-bump portion but the The vacant area where the barb is located does not extend through the entire plate-shaped base of the latching blade in the forward and reverse directions, so that the barb is formed on the positive protrusion so that the
  • the main advantage of such a configuration is that the barb is located in the forward direction of the latch blade without increasing the lateral width of the left arm and the right arm, greatly improving the left arm,
  • the vacant area is an angle range formed by two sides of the left barb or the right barb.
  • a further technical solution may be that the vacant area where the left barb and the right barb are located does not extend through the entire plate-shaped base of the latch blade in the forward and reverse directions, and has a bottom wall body on the left side.
  • the bottom wall body of the barb and the vacant area where the right barb is located is respectively provided with a left vacancy and a right vacancy which penetrate the plate-shaped base body and face outward.
  • a further technical solution may further be provided, between the head end portion of the latch blade and the left lateral flange, a left extending along the left arm for guiding the left vertical block to smoothly slide in Laterally guiding the slope surface, the left side of the guiding slope surface is continuous at one end of the latch blade, and the other end is continuous at an outer top end of the left lateral flange; Between the head end portion and the right lateral flange, a rightward guiding slope surface extending along the right arm for guiding the right vertical block to slide smoothly is provided, and the right side guides the slope surface end Coordinated on the head end of the latch blade, the other end is continuous at the outer top edge of the right lateral flange.
  • the left side guiding the slope surface means that the slope surface is located on the left vertical surface of the left arm of the buckle blade (or toward the left direction), and secondly, the slope surface is mainly guided. a function of the left vertical block on the base smoothly sliding into the left barb; such that when the inner rail is inserted from the outer end of the middle rail to the middle rail, the left arm is initially The front end of the base is slightly deformed by the left vertical block of the base, and the left vertical block on the base can slide along the left side to the guiding slope surface and then slide into the left barb.
  • the right side guiding slope surface also has corresponding functions and structures.
  • the outer top edge of the left lateral flange refers to the top edge located on the outer side of the left side.
  • the outer top edge of the right lateral flange also has a corresponding function and structure.
  • a further technical solution may further be that a positive left slope extending along the left arm and smoothly rising is disposed in a direction of a front surface between the head end portion of the latch blade and the left lateral flange.
  • a side of the positive left ramp surface is continuous on the head end of the latch blade, and the other end is continuous along the positive top end of the left lateral flange;
  • a positive right slope surface extending along the right arm and smoothly rising is disposed in a direction of a front surface between the right lateral flanges, and one end of the forward right slope surface is continuous at a head of the spring blade On the end, the other end is continuous at the positive top edge of the right lateral flange.
  • the forward left slope surface or the forward right slope surface is mainly capable of lifting the structural strength of the line segment arm body between the left barb or the right barb to the head end portion of the buckle blade, Moreover, the left lateral convex edge and the right lateral convex edge are not protruded and are easily impacted and destroyed, and the forward slope surface is similar to the river bank protection slope.
  • a furniture slide rail of the slide rail retaining device comprising a substantially U-shaped groove middle rail and an inner rail, the middle rail and the inner rail slot facing opposite and the inner rail shaft Swept in a U-shaped groove of the middle rail; characterized in that: the base is arranged in a U-shaped groove of the outer end of the middle rail, the base is fixed to the middle rail U a left vertical block and a right vertical block disposed on the bottom of the groove of the groove are located in an axial direction of the inner rail; and a connecting hole passes through a connecting hole of the end portion of the latch blade
  • the latching blade is fixedly attached to the bottom wall of the U-shaped groove of the inner rail, and the reverse surface of the latching blade is attached to the bottom wall of the inner rail U-shaped groove and allows the Buckle blade Two arms extend toward the outer end of the inner rail.
  • a further technical solution may further include: a left receiving hole capable of receiving the reverse left convex block on a bottom wall of the inner rail U-shaped groove, wherein the reverse left convex piece protrudes into the a lateral width of the reverse left protrusion is smaller than a lateral width of the left receiving hole, and a front end of the reverse left protrusion abuts against a hole wall of the left receiving hole;
  • the bottom wall of the inner rail U-shaped groove is further provided with a right receiving hole capable of receiving the reverse right convex piece, and the reverse right convex piece protrudes into the right receiving hole, the reverse right convex
  • the lateral width of the block is smaller than the lateral width of the right receiving hole, and the front end of the reverse right projection abuts against the wall of the right receiving hole.
  • the receiving hole can provide the reverse projection with a relief space that can move left and right in the lateral direction, but can axially press the reverse projection in the axial direction to transmit the axial torque to the reverse
  • a further technical solution may further include: a substantially U-shaped groove-shaped outer rail, the middle rail slidingly disposed in the U-shaped groove of the outer rail and the middle rail and the outer rail slot facing
  • the outer rail has a groove bottom wall and a groove side wall, and a limit stopper capable of preventing the middle rail from sliding is disposed in the U-shaped groove of the inner side end of the outer rail so as to be able to define the middle rail a sliding stroke on the outer rail toward the inner end;
  • the limit stopper includes at least one axial upright extending in the axial direction;
  • the limit stopper includes a cushioning cushion The cushioning cushion is inserted on the axial upright piece, and the height of the cushioning cushion is greater than or equal to the vertical height of the axial upright but shorter than the bottom wall of the inner rail.
  • the outer rail, the middle rail and the inner rail are three independent guide rails constituting the main portion of the slide rail.
  • the outer rail is mounted and fixed on the furniture to provide positioning support for the middle rail and the inner rail.
  • the inner rail is a guide rail on a side of the outer rail adjacent to the movable member of the furniture pull type, and the inner rail is generally fixedly connected with the movable member of the furniture pull type, and the pull type movable member is pulled. While the telescopic movement is being performed, the pull-type movable member also pulls the inner rail to slide together, and the middle rail is a guide rail that is slidably disposed between the outer rail and the inner rail.
  • a U-shaped groove at an inner end of the outer rail is provided with a limit stopper capable of preventing the middle rail and the inner rail from sliding, so that a sliding stroke of the middle rail and the inner rail toward an inner end direction can be defined.
  • the above features mainly define the function of the limit stopper, and the limit stopper can define a sliding stroke of the middle rail and the inner rail toward the inner end direction, avoiding the middle rail and the inner rail from the inner end
  • the furniture is damaged by being detached from the outer rail and even hitting the furniture.
  • limit stopper can directly block the sliding of the middle rail and the inner rail at the same time; or set between the inner rail and the middle rail to define the inner rail in the direction of the inner end of the middle rail
  • An inner rail stopper of the coasting stroke, and the limit stopper directly blocks the sliding of the middle rail, such that when the limit stopper prevents the middle rail from sliding on the outer rail,
  • the sliding of the inner rail on the outer rail is also indirectly defined.
  • outer end and the inner end are named with opposite orientations therebetween, and one side adjacent to the extending direction of the middle rail and the inner rail is an outer end, and the opposite end is an inner end.
  • the limit stopper includes the limit stopper including at least one axial upright piece extending in an axial direction, the feature first defining a structural shape of the upright piece, the upright piece being Sheet-like convex body. Secondly, the arrangement of the erected sheets is also defined.
  • the erected sheets are axially erected sheets extending in the axial direction, and when the number of the erected sheets is plural
  • an axial upright piece and a lateral upright piece extending in the lateral direction may be selectively disposed, or a pair of axial upright pieces disposed parallel to each other, and a pair of axial upright pieces disposed in parallel with each other
  • a lateral erected piece extending in the lateral direction is disposed between.
  • other limit stop structures can be added.
  • the axial direction is the extending direction or sliding direction of the furniture rail.
  • the cushioning cushion is inserted on the axial upright piece, such that the cushioning cushion is a separate component that is independent of the axial upright but is inserted on the axial upright.
  • the cushioning cushion may be made of a material different from the axial upright sheet, such as plastic having a cushioning property, a rubber material, or the like.
  • the erecting piece includes at least one axial upright piece extending in the axial direction, for which the shaft is slid when the middle rail and the inner rail are slid toward the inner end and the impact force is applied to the axial upright piece It is not easy for the erected piece to be subjected to the bending deformation of the force, and even if the bending deformation occurs, the axial erected piece can remain in a standing state without lying down, for which purpose still has the middle rail and The function of the sliding stroke of the inner rail toward the inner end.
  • the manner in which the axial uprights extend in the axial direction enhances the ability of the limit stop to withstand impact forces.
  • the cushioning cushion can slow down the axially upright piece when the middle rail and the inner rail slide toward the inboard end
  • the impact force can also reduce the amount of noise generated by the middle and inner rails striking the axial upright.
  • the cushioning cushion Since the height of the cushioning cushion is greater than or equal to the vertical height of the axial uprights, the cushioning cushion substantially completely wraps the axial uprights, avoiding the intermediate rails and The inner rail directly impacts the axial upright sheet causing excessive damage to the axial upright sheet.
  • the cushioning cushion does not hinder the installation of the furniture pull type movable member.
  • the cushioning cushion can buffer the impact force of the middle rail and the inner rail.
  • the following scheme is further adopted, and the cushioning cushion is substantially seen from a plan view.
  • the trapezoid is shaped to have a wide end portion and a narrow end portion, the narrow end portion being disposed toward the middle rail and the inner rail, and the outer end of the narrow end portion is provided with a projection that laterally protrudes to the left and right sides.
  • the feature viewed from a plan view defines a direction in which the cushioning block is observed, the cushioning block is mounted on the outer rail and the outer rail is placed flat, at which time
  • the U-shaped notch of the outer rail faces upward, and in this state, the direction viewed from the top is defined as the view from the top view.
  • the outer end of the narrow end portion is provided with a protrusion that protrudes laterally to the left and right sides, such that a narrowing transition portion is formed between the protrusion and the wide end portion.
  • the lateral width of the protrusion is smaller than the lateral width of the wide end.
  • middle rail structure In order to optimize the performance of the guide rail, it is further required to further optimize the middle rail structure. Further technical solution is to provide a U-shaped middle rail fork groove on the bottom wall of the inner end of the middle rail.
  • the inner end of the middle rail fork groove is slightly narrowed in the lateral direction so as to be in a beam shape, and the middle rail fork groove is adapted to the narrow end portion of the cushioning cushion, when advancing the middle
  • the middle rail fork slot can contain the narrow end of the cushioning pad when the rail is inserted into the cushioning cushion.
  • the inner end of the middle rail fork groove is slightly narrowed in the lateral direction so as to be in the shape of a beam, such that the lateral width of the inner notch of the middle rail groove is larger than the The lateral width of the outer groove bottom of the middle rail fork groove is small.
  • the middle rail fork slot is adapted to the narrow end of the cushioning cushion, the above feature defining that the narrow end of the cushioning cushion has substantially the same shape as the central rail slot Shape and fit size.
  • the outer end of the middle rail fork groove is adapted to the left and right projections of the cushioning cushion, and the inner end of the middle rail groove and the narrowing transition of the cushioning cushion adaptation.
  • the middle rail fork slot includes a narrow end of the cushioning cushion.
  • the middle rail inserted on the cushioning cushion can be positioned to prevent the middle rail from colliding into the After being cushioned, the cushion block is slid in the direction of the outer end by the impact force exerted by the cushioning cushion.
  • the structure of the inner rail can be further improved.
  • the specific technical solution is that the side wall of the inner side of the inner rail is slightly narrowed in the lateral direction to form a beam shape, and the inner side of the inner rail End adapted to the buffer a wide end portion of the cushion block, the slot sidewall of the inner end of the inner rail being capable of containing the cushioning cushion when the inner rail is advanced to the inner rail to be inserted into the cushioning cushion Wide end.
  • the side wall of the groove at the inner end of the inner rail is slightly narrowed in the lateral direction so as to have a beam shape, so that a narrowed beam mouth portion is formed at the inner side end of the inner rail.
  • a fitting structure between the inner end of the inner rail and the wide end of the cushioning block is used between the inner end of the middle rail and the narrow end of the cushioning block.
  • the mating structure is similar and similar effects have been achieved.
  • the slot of the outer rail The inner side of the side wall is arranged with two first ball grooves arranged in parallel in the upper and lower directions, and the outer side of the groove side wall of the inner rail is arranged with two fourth ball grooves arranged in parallel in the upper and lower directions, and the groove of the middle rail
  • the second side of the side wall is disposed with two second ball grooves arranged in parallel with the first and second ball grooves, and a partial segment between the first ball groove and the second ball groove a first ball assembly having a skeleton;
  • an inner side of the groove side wall of the middle rail is disposed with two third ball grooves arranged in parallel with the upper and lower sides of the fourth ball groove, A partial segment between the three ball grooves and the fourth ball groove is provided with a second ball assembly with a skeleton.
  • the first ball assembly with a skeleton means that the first ball assembly is not only provided with balls, but also includes a skeleton for supporting and positioning the balls.
  • the second ball assembly with the skeleton also means that the second ball assembly is not only provided with balls, but also includes a skeleton for supporting and positioning the balls.
  • a partial segment between the first ball groove and the second ball groove is provided with a first ball assembly with a skeleton
  • the above feature defines a length of the first ball assembly
  • the first ball The assembly has a length of the first ball groove and a portion of the second ball groove, and the length of the first ball assembly is smaller than the length of the first ball groove and the second ball groove.
  • the first ball assembly also slides with the middle rail and provides smooth sliding support for the middle rail.
  • the provision of the partial segment length of the first ball assembly can save the amount of consumables of the first ball assembly.
  • the second ball assembly with the skeleton provided in a partial section between the third ball groove and the fourth ball groove has a similar effect, and the discussion will not be repeated for this purpose.
  • a double-layer ball structure is respectively disposed between the middle rail and the inner rail, and the outer rail can be made by the double-layer ball
  • the middle rail, the middle rail and the inner rail respectively have a uniform sliding gap in the upper and lower directions, thereby preventing the middle rail and the inner rail from swaying in the upper and lower directions during the sliding process, and the card is generated. Phenomenon, wear and other phenomena affect the sliding.
  • a ball mounting hole in which a ball is mounted on the bobbin is often used, and in the above-described double-layer ball group, if the upper and lower rows of balls are arranged in the upper and lower corresponding manners, correspondingly It is necessary to arrange the ball mounting holes up and down, so that the ball mounting holes correspondingly disposed on the upper and lower sides obviously weaken the structural strength of the skeleton, so that the skeleton is very likely to be damaged. How to set the upper and lower balls for this purpose is also a problem worthy of our study.
  • the structure of the first ball assembly is first improved, and the specific improvement scheme is:
  • the first ball assembly with a skeleton includes a first skeleton in a plate shape and a first ball group disposed on the first skeleton, the first ball group including a first upper row of balls and a first lower group In the row of balls, the balls in the first upper row of balls and the balls in the first lower row of balls are arranged offset in the upper and lower directions.
  • the balls in the first upper row of balls and the balls in the first lower row of balls are arranged offset in the upper and lower directions, and can also be used to mount and position the ball positioning structure, for example, the first upper row.
  • the ball mounting holes are arranged offset from the first lower row of ball mounting holes in the upper and lower directions, so that the frame has an appropriate structural strength.
  • the balls in the first lower row of balls can be close to or even slightly extended into the first upper row.
  • the height of the first ball assembly can be appropriately reduced, and the space occupied by the height direction is reduced, thereby facilitating the reduction of the furniture guide rail. Overall height.
  • the first skeleton is very easy to be The outer rail or the middle rail contact generates friction and is damaged.
  • one of the first upper row of balls or the first lower row of balls is at the first The pitch of the balls at the starting positions of the front and rear ends of the skeleton is smaller than the spacing of the balls at the middle position.
  • the relatively dense balls at the starting positions of the front and rear ends of the first upper row of ball sets can maintain a proper clearance space between the first frame and the outer rail or the middle rail, avoiding or reducing the first
  • the skeleton is in contact with the outer rail or the middle rail to cause friction and damage.
  • the relatively dense balls described above are also capable of providing a smoother support for the outer and middle rails.
  • protruding ribs are respectively disposed at positions on both sides of the first bobbin and corresponding to the first upper row of ball sets and the first lower row of ball sets. In this way, the contact area of the first skeleton with the outer rail and the middle rail is further reduced by the protruding ribs, and the wear on the first skeleton is further reduced. In addition, the structural strength on both sides of the first frame can be enhanced by means of the protruding ribs.
  • the second ball assembly with a skeleton includes a second skeleton in a U-shaped groove shape and a second ball group disposed on a groove side wall of the second skeleton, the second ball group including a second upper row
  • the ball set and the second lower row of balls, the balls in the second upper row of balls and the balls in the second lower row of balls are arranged offset upward and downward. In this way, an effect similar to the arrangement of the balls in the first upper row of balls and the balls in the first lower row of balls in the upper and lower directions can be obtained.
  • a further technical solution may further be that the groove side wall of the second bobbin is divided into spaced apart islands, and three balls arranged in a triangle are arranged on each of the islands.
  • the second skeleton has a certain elastic deformation capability, and when the magnitude of the axial sliding gap between the inner rail and the middle rail changes at a certain position due to manufacturing errors or assembly errors, The second skeleton can be appropriately adjusted in shape by its own elastic deformation ability so as to be prevented from being caught between the inner rail and the middle rail.
  • FIG. 1 is a schematic structural view of a furniture slide rail according to a technical solution of the present invention
  • Figure 2 is a schematic exploded view of the furniture slide rail shown in Figure 1;
  • Figure 3 is a cross-sectional structural view of the A-A direction of Figure 1;
  • Figure 4 is an exploded perspective view of Figure 3, in order to simplify the view, the buffer pad 4, the snap-off blade 5 is omitted;
  • FIG. 5 is a schematic structural view of the first frame 610 in a front view direction
  • Figure 6 is a schematic structural view of the buffer cushion in a plan view
  • Figure 7 is a schematic cross-sectional structural view of the inner rail 3 at the inner end position
  • Figure 8 is a schematic structural view of the middle rail 2 in a plan view direction
  • Figure 9 is a partial enlarged view of the area B in Figure 8.
  • FIG. 10 is a schematic structural view of the base 7 in a plan view direction
  • Figure 11 is a perspective view showing the structure of the base 7;
  • Figure 12 is a perspective view showing the structure of the base 7 shown in Figure 11 after being turned over;
  • Figure 13 is a schematic view showing the structure of the slider blade 5 of the first embodiment in a plan view direction, in which the reference front surface 5a of the latch blade 5 faces upward;
  • Figure 14 is a schematic structural view of the slider blade 5 shown in Figure 13 after being turned over, wherein the reverse surface 5b of the latch blade 5 is upward;
  • Figure 15 is a schematic structural view showing the side view direction of the buckle blade 5 shown in Figure 13;
  • Figure 16 is a perspective view showing the structure of the illustrated latch blade 5 of the first embodiment
  • Figure 17 is a schematic view showing the mating relationship between the reverse bumps (55, 56) and the receiving holes (34, 34a);
  • FIG. 18 is a schematic structural view of a top surface of the buckle blade 5' to which the second embodiment is applied;
  • Fig. 19 is a schematic view showing the structure of the slider blade 5" according to the third embodiment in a plan view.
  • Slide rails. 1 and 2 show a three-fold telescopic furniture guide rail 100 of a novel structure, which comprises a U-shaped groove, an outer rail 1, a middle rail 2 and an inner rail 3.
  • the middle rail 2 is axially slidably disposed in the U-shaped groove of the outer rail 1 and the middle rail 2 is oriented in the same direction as the notch of the outer rail 1, and the inner rail 3 is axially slidably disposed at the
  • the U-shaped groove of the middle rail 2 and the middle rail 2 and the notch of the inner rail 3 face in opposite directions; a U-shaped groove at the inner end 1a of the outer rail 1 is provided to block the middle rail 2 a limit stopper that slides inwardly with the inner rail 3 so as to be able to define a coasting stroke of the middle rail 2 and the inner rail 3 in the inward direction; and between the middle rail 2 and the inner rail 3 It is possible to prevent the inner rail 3 from accidentally coming off the slide rail preventing device of the middle rail 2.
  • the outer rail 1 When the furniture rail 100 is installed in the furniture, the outer rail 1 is mounted and fixed on the furniture to provide positioning support for the middle rail 2 and the inner rail 3.
  • the inner rail 3 is a guide rail adjacent to the side of the outer rail 1 which is close to the movable member of the furniture pull type.
  • the inner rail 3 is fixedly connected with the movable member of the furniture pull type, and the pull type is pulled.
  • the middle rail 2 is a guide rail that is slidably disposed between the outer rail 1 and the inner rail 3.
  • the outer rail 1, the middle rail 2 and the inner rail 3 are both substantially U-shaped, for which they respectively have a groove bottom wall and are respectively erected in the groove. Upright groove side walls on both sides of the bottom wall.
  • Two first ball grooves 101 arranged in parallel with each other are arranged on the inner side of the pair of groove side walls 10 of the outer rail 1, and two outer sides of the pair of groove side walls 30 of the inner rail 3 are respectively arranged a fourth ball groove 301 arranged in parallel above and below the strip, wherein the outer sides of the pair of groove side walls 20 of the middle rail 2 are respectively arranged with two upper and lower parallel alignments adapted to the first ball groove 101 a second ball groove 201, a first ball assembly 61 with a skeleton is disposed between the first ball groove 101 and the second ball groove 201, and the length of the first ball assembly 61 is shorter than the The length of the first ball groove 101 and the second ball groove 201, for which the first ball assembly 61 is disposed only in a partial
  • the first ball assembly 61 also slides with the middle rail 2 and provides smooth sliding support for the middle rail 2.
  • the inner side of the pair of groove side walls 20 of the middle rail 2 are respectively disposed with two third ball grooves 202 arranged in parallel with the upper and lower sides of the fourth ball groove 301, the third a second ball assembly 62 with a skeleton between the ball groove 202 and the fourth ball groove 301.
  • the length of the second ball assembly 62 is shorter than the third ball groove 202 and the fourth The length of the ball groove 301, for which the second ball assembly 62 is disposed only in a partial section between the third ball groove 202 and the fourth ball groove 301.
  • the second ball assembly 62 also slides with the inner rail 3 and provides smooth sliding support for the inner rail 3.
  • the skeleton-equipped first ball assembly 61 includes a first skeleton 610 in a plate shape and a first ball group disposed on the first skeleton 610, the first ball The group includes a first upper row of ball sets 611 and a first lower row of ball sets 611a.
  • Ball mounting holes 6100 for mounting the balls are correspondingly disposed on the first bobbin 610 in accordance with the layout positions of the balls in the ball sets (611, 611a).
  • the ball mounting holes 6100 need to be arranged correspondingly up and down, thus, up and down
  • the correspondingly disposed ball mounting holes 6100 obviously weaken the structural strength of the first frame 610, making the first frame 610 very susceptible to damage.
  • the technical solutions are different.
  • the balls in the first upper row of ball sets 611 of the present invention are arranged offset from the balls in the first lower row of ball sets 611a in the upper and lower directions. This can skillfully solve the above technical problem, so that the first skeleton 610 has an appropriate structural strength.
  • the balls in the first lower row of ball sets 611a can be close to or even slightly protrude into the space between the adjacent two balls in the first upper row of ball sets 611, thereby enabling Appropriately reducing the height of the first ball assembly 61 and reducing its occupying space in the height direction is advantageous for reducing the overall height of the furniture rail 100.
  • the first upper row of ball sets 611 slides between the outer rail 1 and the middle rail 2, because the starting positions of the front and rear ends of the first upper row of ball sets 611 are mainly stressed. It is very easy to make the first skeleton 610 contact with the outer rail 1 or the middle rail 2 to cause friction and damage.
  • a further improvement is that, as shown in FIG. 5, the first lower row of balls
  • the ball spacing distance (L1, L3) of the starting position of the front and rear ends of the first bobbin 610 is smaller than the ball spacing distance L2 of the middle position.
  • the relatively dense balls at the starting positions of the front and rear ends of the first lower row of ball sets 611a can maintain the first frame 610 and the outer rail 1 or the middle rail 2 with a proper clearance space, avoiding or reducing
  • the first skeleton 610 is in contact with the outer rail 1 or the middle rail 2 to cause friction and damage.
  • the relatively dense balls described above can also provide a more stable support for the outer rail 1 and the middle rail 2.
  • the first upper row of ball sets 611 are provided with relatively dense balls at the starting positions of the front and rear ends.
  • protruding ribs (612, 612a) are respectively disposed at positions on both sides of the first bobbin 610 and corresponding to the first upper row of ball sets 611 and the first lower row of ball sets 611a.
  • the contact area of the first skeleton 610 with the outer rail 1, the middle rail 2, and the wear of the first skeleton 610 are further reduced by the protruding ribs (612, 612a).
  • the structural strength of the two sides of the first frame 610 can be enhanced by means of the protruding ribs (612, 612a).
  • the second ball assembly 62 with a skeleton includes a second skeleton 620 having a U-shaped groove shape and a second ball group disposed on the groove side wall of the second skeleton 620.
  • the second ball set includes a second upper row of balls 621 and a second lower row of balls 621a, and the balls in the second upper row of balls 621 and the balls in the second lower row of balls 621a are The upper and lower directions are arranged in a wrong position. In this way, an effect similar to the arrangement of the balls in the first upper row of ball sets 611 and the balls in the first lower row of ball sets 611a in the upper and lower upward dislocations can be obtained.
  • the groove side wall of the second skeleton 620 is divided into spaced-apart islands 623, and each of the small islands 623 is provided with three ball mounting holes 624 arranged in a triangle shape, and the balls are mounted on each of the balls. Balls are mounted on the holes 624.
  • the second skeleton 620 has a certain elastic deformation ability, and when the magnitude of the axial sliding gap between the inner rail 3 and the middle rail 2 changes at a certain position due to manufacturing errors or assembly errors, The second skeleton 620 can be appropriately adjusted in shape by its own elastic deformation ability so as to be prevented from being caught between the inner rail 3 and the middle rail 2.
  • a double-layer ball structure is respectively disposed between the middle rail 2 and the inner rail 3, by means of the double-layer ball structure.
  • the outer rail 1 and the middle rail 2, the middle rail 2 and the inner rail 3 respectively have a uniform sliding gap in the upper and lower directions, thereby preventing the middle rail 2 and the inner rail 3 from sliding.
  • the upper and lower swaying occurs, and the phenomenon of stagnation and wear occurs, which affects the sliding effect.
  • the sliding stroke of the middle rail 2 and the inner rail 3 toward the inner end is defined by the limit stopper, and the limit stopper can directly block the middle rail 2 and the The inner rail 3; may also adopt a manner as shown in FIG. 2, at the outer end of the inner rail 3, a downwardly bent edge 31 is provided, and the inner rail 3 can be abutted by the lower bent edge 31
  • the outer end of the middle rail 2 is defined on the middle rail 2, and the middle rail 2 is a sliding stroke defined directly on the outer rail 1 in the inward direction by the limit stopper, such that the limit The position stop and the downwardly bent edge 31 can jointly define an axial sliding stroke of the inner rail 3 on the outer rail 1 in the inward direction.
  • the structure of the limit stopper is also distinctive, and the specific structure of the limit stopper is introduced below with reference to FIGS. 2, 6, 7, 8, and 9. .
  • the limit stopper includes a pair of axial upright sheets (12, 12a) standing on the inner side end of the bottom wall 11 of the outer rail 1, the axial upright sheet (12, 12a) integrally formed with the outer rail 1 Directly integrated by stamping.
  • the meaning of the standing is mainly that the axial uprights (12, 12a) may be arranged substantially perpendicular to the groove bottom wall 11 in a direction of 90° or slightly less than 90°.
  • the axial direction is the extending direction of the furniture rail 100.
  • the middle rail 2 and the inner rail 3 are axially slid toward the inner end direction and apply an axial impact force to the axial upright sheets (12, 12a)
  • the axial upright sheets (12, 12a) It is not easy to appear that the bending deformation is particularly inclined in the axial direction, and the layout of the axial uprights (12, 12a) extending in the axial direction greatly improves the limit stopper. Ability to withstand impact. In essence, it is also possible to provide only one axial upright piece on the inner end of the groove bottom wall 11 of the outer rail 1, or to provide an axial upright piece and a longitudinal upright piece. Regardless of the manner in which the axial erecting sheets extending in the axial direction are provided at least, the above technical effects can be achieved.
  • the limit stop further includes a cushioning cushion 4 that can be plugged onto the axial uprights (12, 12a).
  • the cushioning cushion 4 is made of soft rubber or the like.
  • the cushioning pad 4 has a substantially trapezoidal shape as viewed in a plan view and has a wide end portion 40 and a narrow end portion 41, and the outer end of the narrow end portion 41 is provided with lateral to the left and right sides.
  • the convex protrusions (411, 411a), the lateral width of the pair of the protrusions (411, 411a) are smaller than the lateral width of the wide end portion 40.
  • a narrowing transition portion 412 is formed between the projections (411, 411a) and the wide end portion 40.
  • a pair of insertion slots 42 adapted to the axial uprights (12, 12a) are also provided on the cushioning cushion 4.
  • the cushioning block 4 is inserted through the insertion groove 42 on the axial uprights (12, 12a) and the narrow ends 41 are arranged in the direction of the middle rail 2 and the inner rail 3.
  • the height of the cushioning cushion 4 is greater than or equal to the vertical height of the axial uprights (12, 12a) but is shorter than the bottom wall of the inner rail 3 when viewed from a side view. 32.
  • the cushioning cushion 4 can substantially completely wrap the axial uprights (12, 12a), avoiding the middle rail 2 and the inner rail 3 from directly impacting on the axial uprights (12, 12a) Excessive damage to the axial uprights (12, 12a), and also to slow down the axial slabs (12, 12a) when the middle rails 2 and the inner rails 3 are slid toward the inboard end.
  • the impact force and the amount of noise generated by the middle rail 2 and the inner rail 3 striking the axial uprights (12, 12a) can be reduced.
  • the cushioning block 4 is not raised above the groove bottom wall 32 of the inner rail 3 and therefore does not impede the installation of the furniture pull-type movable part.
  • the middle rail 2 and the inner rail 3 When the middle rail 2 and the inner rail 3 impinge on the limit stopper, the middle rail 2 and the inner rail 3 also receive the reverse force given by the limit stopper, in order to prevent The middle rail 2 and the inner rail 3 are slid to the outer end due to the repulsive force, and the structure of the middle rail 2 and the inner rail 3 is further improved below.
  • the structure of the middle rail 2 is first improved.
  • a U-shaped middle rail fork groove 22 is provided on the groove bottom wall 21 of the inner rail 2 inner end 2a, and the inner end of the middle rail fork groove 22 is in the lateral direction.
  • the direction is slightly narrowed to be in a beam shape, and a relatively narrowed inner notch 221 is formed at the inner end of the middle rail groove groove 22.
  • Dimples 220 adapted to the protrusions (411, 411a) are respectively disposed on both sides of the outer end of the middle rail fork groove 22, such that the middle rail fork groove 22 has the cushioning cushion
  • the narrow end portion 41 of the block 4 has a generally uniform shape and mating dimensions, and the middle rail fork groove 22 is adapted to the narrow end portion 41.
  • the outer notch 221 of the middle rail fork groove 22 is engaged in the buffer
  • the narrowing transition portion 412 of the cushion member 4 at which time the outer notch 221 of the middle rail fork groove 22 has actually been caught by the left and right projections of the cushioning cushion 4 (411, 411a)
  • the middle rail 2 inserted into the cushioning cushion 4 can be positioned to prevent the middle After the rail 2 collides with the cushioning cushion 4, it is rebounded toward the outer end by the reaction impact force given by the cushioning cushion 4.
  • the meaning of the inclusion mainly means that the middle rail 2 can be combined on the cushioning cushion 4 with a certain bonding force, but it is necessary to remove the cushioning softness when an external force of a little larger force is applied. Pad 4.
  • the groove side wall 30 of the inner end of the inner rail 3 is slightly narrowed in the lateral direction so as to be in the shape of a beam so as to be inside.
  • the width of the inner end of the rail 3 is slightly smaller than the width of the wide end 40, and the inner end of the inner rail 3 is adapted to the wide end 40 of the cushioning block 4,
  • the groove side wall of the inner end of the inner rail 3 can also contain the wide end of the cushioning block 4. Department 40. It must be noted that the groove side wall 30 of the inner rail 3 shown in Fig.
  • the groove side wall 30 of the inner rail 3 is a cross-sectional view of the inner end position, and the groove side wall 30 of the inner rail 3 shown in Fig. 4 is not a cross-sectional view of the inner end position.
  • the mating structure between the inner end of the inner rail 3 and the wide end 40 of the cushioning block 4 and the inner end of the middle rail 2 and the narrow end of the cushioning block 4 The mating structure adopted between the portions 41 is similar, and a similar effect is obtained.
  • the groove side wall of the inner end of the inner rail 3 can contain the wide end of the cushioning block 4. 40, by the cooperation of the inner end of the inner rail 3 and the wide end portion 40 of the cushioning block 4, the inner rail 3 can be positioned to prevent the inner rail 3 from colliding with the cushioning block 4 Up and down, the rebound is slid toward the outer end by the impact of the impact force given by the cushioning cushion 4.
  • a slide rail preventing device for preventing accidental disengagement of the middle rail 2 when the inner rail 3 is pulled out is disposed between the middle rail 2 and the inner rail 3, and the rail rail preventing device includes a base 7 And a latch blade 5 that cooperates with the base 7, wherein the base 7 is mounted on the middle rail 2 and the snap vane 5 is mounted on the inner rail 3.
  • the specific structure of the base 7 and the latching blade 5 will be described below with reference to FIG. 2 and FIG. 10 to FIG.
  • the base 7 includes a base plate 71 and a pair of vertical blocks symmetrically disposed in a direction of a front surface of the substrate 71, that is, a left vertical block 72 and a right vertical block 73.
  • the left upright block 72 and the right upright block 73 are convex structures disposed on the substrate 71, and are spaced apart between the left upright block 72 and the right upright block 73, for which purpose A avoidance space 70 is formed therebetween; guide slopes (720, 730) are also provided at the outer ends of the left and right vertical blocks 72, 73 to facilitate introduction into the inner rail 3;
  • the outer end portion is further provided with an anti-collision elastic arm 700, so that the downwardly bent side 31 of the outer end of the inner rail 3 can be elastically pressed against the anti-collision elastic arm when the inner rail 3 is fully retracted 700 on.
  • the left upright block 72 and the right upright block 73 are arranged to extend in the axial direction so as to have a certain extension length in the axial direction.
  • the axial direction is the extending direction of the middle rail 2 on which the base 7 is mounted, or the sliding direction of the middle rail 2, when the base 7 is mounted to the middle rail 2 After the upper portion, the extending direction of the vertical block coincides with the extending direction of the middle rail 2.
  • the base 7 further includes a pair of fixed wings symmetrically disposed in the direction of the front surface of the substrate 71, that is, the left fixed wing portion 74 and the right fixed wing portion 75.
  • the left fixed wing portion 74 and the right fixed wing portion 75 are located on the left and right side edges of the substrate 71 and are also spaced apart, and the left vertical block 72 and the right vertical block 73 are located at the left fixed wing The space between the portion 74 and the right fixed wing portion 75 is within.
  • the base 7 further includes a pair of fixing legs, that is, the left fixing leg portion 76 and the right fixing leg portion 77, which are disposed on the reverse surface of the substrate 71.
  • the latching blade 5 various embodiments can be employed, and the preferred four embodiments are set forth below.
  • the first embodiment of the latch blade 5 is as follows:
  • the latch blade 5 has a plate-like base body 50 having a substantially positive plate-like surface 50, and the plate-like base body 50 has a reference front surface 5a and the front surface. 5a opposite reference inversion face 5b, said plate-like base body 50 comprising a head end portion 59 provided with a connection hole 590 and two arms respectively leading from the both sides of the head end portion 59, namely, the left side arm 51 and the right side
  • the side arms 52, the left side arms 51 and the right side arms 52 extend substantially in the same direction toward the trailing end and are joined together at the trailing end 57 to form a central void 591 in the central region of the latching blade 5.
  • the reference plane refers to a positioning surface for determining a reference in the front and back surfaces (5a, 5b) of the latch blade 5, which is a surface of a flat surface having a largest area among the front and back sides, as in the front surface
  • the relationship between the flat surface and the raised mountain is obviously the same as the flat surface used in the present invention.
  • the reference surface can be a defined flat surface or a proposed design surface.
  • the connecting hole 590 is a positioning mechanism for positioning the latching blade 5 onto the inner rail 3 by means of a rivet-like connecting device.
  • a rivet or the like Delivered to the head end portion 59 of the latch blade 5, the head end portion 59 becomes the first point of force of the latch blade 5.
  • the plate-shaped base body 50 of the latching blade 5 further includes two sides of the head end portion 59 and extend from the head end portion 59 to the tail end direction of the latching blade 5 substantially in the same direction.
  • the left arm 51 and the right arm 52 are joined together at the trailing end to form a central vacancy 591 in a central region of the latch blade 5.
  • the left arm 51 and the right arm 52 are defined as extending from both sides of the head end 59 like the legs of the compass, but the left arm 51 and the right arm 52 are at the end.
  • the end portions 57 are again coupled such that the left side arm 51 and the right side arm 52 form the elastic blade of a unitary structure, and the axial center axis of the connecting hole 590 of the head end portion 59 is located at the left side.
  • the two arm members defining the central vacancy 591 are the left side arm 51 and the right side arm 52, and the central vacancy 591 is the left side arm 51 and
  • the right arm 52 provides a relief space for the intermediate offset, and therefore, when a relative tightening force is applied to the left arm 51 and the right arm 52, the left arm 51 and the right arm 52 can be assisted by
  • the central vacancies 591 are relatively close together and simultaneously have the structures disposed thereon, such as the positive left and right sliders 533, 543, which will be discussed below, are also relatively close together.
  • a positive left protrusion 533 protruding from the reference forward surface 5a of the plate-like base 50 is disposed on the left arm 51, and the forward left protrusion 533 includes a left side arranged in the axial direction.
  • a vertical convex 531 and a left lateral convex 530 disposed at an angle to the left vertical convex 531, and an angle between the left vertical convex 531 and the left lateral convex 530 forms an L-shaped Left barb 53.
  • the left barb 53 is disposed at a substantially mid-section of the left arm 51.
  • the vacant area where the left barb 53 is located does not extend through the plate-shaped base body 50 of the entire latch blade 5 in the forward and reverse directions, and the left barb 53 further has a bottom wall body 534 on the reverse side.
  • the bottom wall body 534 is also a partial wall of the plate-shaped base body 50.
  • the left vertical flange 53 is the left vertical side of the left barb 53 and the left lateral flange 530 is the left lateral side of the left barb 53.
  • the L-shaped left corner of the left barb 53 is less than or equal to 90° and faces the left and rear ends, such that when the left vertical block 72 is snapped into the left barb 53, the left vertical block 72 may leave the left barb 53 from the left vacancy, or the left upright block 72 may slide in from the left side of the left barb 53 or may move in the axial direction from the tail end to the head end into the The left barb 53 or exits in the opposite direction.
  • a positive right protrusion 543 protruding from the reference forward surface 5a of the plate-like base 50 is disposed on the right arm 52, and the forward right protrusion 543 includes an axial direction.
  • the right barb 54 is disposed at a substantially mid-section of the right arm 52.
  • the vacant area where the right barb 54 is located does not extend through the entire plate-shaped base body 50 of the latch blade 5 in the forward and reverse directions, and the right barb 54 further has a bottom wall body 544 on the reverse side.
  • the right side of the right vertical flange 541 becomes the left vertical side of the right barb 54
  • the lower side of the right lateral flange 540 becomes the left lateral direction of the right barb 54. side.
  • the L-shaped right corner of the right barb 54 is less than or equal to 90° and faces the right and tail directions, so that the right vertical block 73 is inserted into the right barb 54 and can be separated from the right vacancy.
  • the right barb 54 can also be moved into the right barb 54 in the axial direction from the tail end to the head end.
  • the left barb 53 and the right barb 54 are symmetrically arranged left and right and the symmetrical central axis overlaps with the axial center axis of the connecting hole 590.
  • a further technical solution is that a small dimple 513 is further disposed on the outer side of the connecting arm between the head end portion 59 of the latch blade 5 and the left lateral flange 530, thereby improving the flexibility of the arm portion; Also, a small recess 523 is provided outside the connecting arm between the head end portion 59 of the latch blade 5 and the right lateral flange 540.
  • a further technical solution is to provide a positive and vertical lifting along the left arm 51 in the direction of the front surface 5a between the head end portion 59 of the latch blade 5 and the left lateral flange 530.
  • To the left ramp surface 511 one end of the forward left ramp surface 511 is continuous on the head end portion 59 of the latch blade 5, and the other end is continuous at the forward top end of the left lateral flange 530;
  • a positive right slope surface 521 extending along the right arm 52 and smoothly rising in a direction of the front surface 5a between the head end portion 59 of the latch blade 5 and the right lateral flange 540 is provided.
  • the forward left ramp surface 511 or the forward right ramp surface 521 is mainly capable of lifting the line between the left barb 53 or the right barb 54 to the head end portion 59 of the latch blade 5
  • the structural strength of the arm body can
  • the left lateral flange 530 and the right lateral flange 540 are not protruded to be easily impacted, and the forward slope surface (511, 521) is similar to the bank slope of the river bank.
  • guide chamfers (532, 542) are respectively disposed at positions along the outer top ends of the left lateral flange 530 and the right lateral flange 540. This facilitates introduction of the left upright block 72 and the right upright block 73 on the base 7 when the latching blade 5 is assembled.
  • the guiding chamfer (532, 542) does not refer to a process transition fillet that must be used on the mold when manufacturing the latch blade 5, but a transition circle larger than the turning radius of the process transition fillet. angle.
  • FIG. 2 is a schematic view showing the mounting state of the slide rail preventing device on the furniture rail 100.
  • the base 7 is disposed in the U-shaped groove of the middle rail 2 .
  • a pair of mounting holes are provided in the bottom wall of the U-shaped groove of the outer end of the middle rail 2, and a pair of the fixing legs (76, 77) of the base 7 are engaged in the mounting Inside the hole, a pair of the fixed wings (74, 75) of the base 7 abut against a pair of groove side walls 20 of the middle rail 2, respectively.
  • the base 7 is fixed in the middle rail 2U-shaped groove and the left upright block 72 and the right upright block 73 provided on the base 7 are located in the axial direction of the middle rail 2.
  • the latching blade 5 is fixed to the groove bottom wall 32 of the U-shaped groove of the inner rail 3 by a connecting nail passing through a connecting hole 590 of the head end portion 59 of the latch blade 5, so that a reverse surface 5b of the latching blade 5 is attached to the bottom wall of the inner rail 3U-shaped groove and extends the two arms of the latching blade 5 toward the outer end of the inner rail 3
  • the head end portion 59 of the latch blade 5 faces the inner end of the inner rail 3.
  • the left vertical flange 531 and the right vertical flange 541 of the latch blade 5 can be defined in the escape space 70 between the left upright block 72 and the right upright block 73 of the base 7, respectively.
  • the left lateral flange 530 and the right lateral flange 540 can simultaneously abut against the front edge of the left vertical block 72 and the right vertical block 73 of the base 7, and the bottom wall bodies (534, 544) are respectively covered.
  • the left upright block 72 and the right upright block 73 are respectively covered.
  • the inner rail 3 is continuously applied with an axial pulling force in the direction of the outer end, which is transmitted through the head end portion 59 of the latch blade 5 and the left arm 51 and the right arm 52.
  • the left barb 53 and the right barb 54 are reversely blocked by the left standing block 72 and the right standing block 73 on the base 7, at which time the center axis of the head end portion 59 of the latch blade 5 is located
  • the axial force causes the left side arm 51 and the right side arm 52 to be laterally offset laterally at the same time, so that the left standing block 72 and the right side stand upright.
  • the block 73 is also tightly attached to the left barb 53 and the right barb 54, respectively, so that the latch blade 5 cannot be disengaged from the base 7.
  • the left arm 51 and the right arm 52 of the latch blade 5 are forced to move toward the middle to enable the left
  • the side arm 51 and the right side arm 52 respectively leave the left barb 53 or the right barb 54 to release the buckle blade 5 from the base 7, and the inner rail is pulled toward the outer end.
  • the forward left projection 533 and the forward right projection 543 of the latch blade 5 pass through the escape space 70 between the left vertical block 72 and the right vertical block 73 to finally bring the inner rail 3 from The middle rail 2 is detached.
  • the latch blade 5 and the inner rail 3 are subsequently reinstalled on the furniture rail 100.
  • the latching blade 5 and the inner rail 3 are mounted on the furniture rail 100, and the structure of the latching blade 5 is further improved below.
  • the front end of the left side arm 51 is initially the left standing block 72 of the base 7.
  • the top pressure is slightly deformed, and the left vertical block 72 on the base 7 can slide along the left side toward the guiding slope surface 510 and then slide into the left barb 53.
  • the right side guide slope Face 520 also has corresponding functions and structures.
  • the left arm 51 and the right arm 52 have a shape in which the width is wide in the middle and the ends of the head and the tail are narrowed.
  • the minimum cross-sectional area of the left and right arms 51 and the right end of the right arm 52 is 10% to 40% of the maximum cross section of the middle portion.
  • the left arm 51 and the right arm 52 are respectively formed in a middle width shape, and the structural strength of the middle position can be increased, so that the left barb 53 and the right barb 54 disposed at the middle position are allowed.
  • the structural strength of the left arm 51 and the right arm 52 are respectively narrowed at the ends of the head and the tail, and the left arm 51 and the right arm 52 can be easily deformed to facilitate assembly and assembly.
  • the latch blade 5 and the inner rail 3 are removed.
  • the left side arm 51 of the latch blade 5 is provided with a reverse left protrusion 55 protruding from the reference reverse surface 5b.
  • the right side arm 52 is provided with a reverse right projection 56 protruding from the reference reverse surface 5b.
  • a left receiving hole 34a capable of receiving the reverse left protrusion 55 is further disposed on the groove bottom wall 32 of the U-shaped groove of the inner rail 3, and the reverse left protrusion 55 extends into the left receiving In the hole 34a, the lateral width L7 of the reverse left protrusion 55 is smaller than the lateral width L6 of the left receiving hole 34a, and the front end 550 of the reverse left protrusion 55 abuts against the hole of the left receiving hole 34a.
  • a right receiving hole 34 capable of receiving the reverse right projection 56 is disposed on the bottom wall 32 of the U-shaped groove of the inner rail 3, and the reverse right projection 56 extends into the wall.
  • the lateral width L4 of the reverse right protrusion 56 is smaller than the lateral width L5 of the right receiving hole 34, and the front end 560 of the reverse right protrusion 56 abuts against the right receiving hole 34 on the wall of the hole.
  • the left vertical block 72 and the right vertical block 73 are reversely applied to the opposite force of the left side arm 51 and the right side arm 52, or the pulling force generated when the inner rail 3 is pulled outward, by the
  • the head end portion 59, the reverse left projection 55, and the reverse right projection 56 of the latch blade 5 are uniformly transmitted to the left arm 51 and the right arm 52 of the latch blade 5, that is, outward.
  • a trailing end projection 58 projecting from the reference forward surface 5a is provided at the trailing end portion 57 of the latch blade 5. This can greatly increase the structural strength of the tail end portion 57, and is not only convenient for manufacturing the mold but also for improving the structural strength of the latch blade 5.
  • FIG. 18 is a schematic structural view of a second embodiment of the latching blade 5':
  • the latching blade 5' of the second embodiment has a similar structure as the latching blade 5 of the first embodiment, and the main difference is that the positive button is not disposed on the latching blade 5
  • the bump 533 and the forward right bump 543 thus relate to changes in the formation structure of the left barb and the right barb.
  • a left vertical side 531' disposed in the axial direction and an angled arrangement with the left vertical side 531' are disposed on the left side arm 51' of the latch blade 5'.
  • the left lateral side 530', the angle between the left vertical side 531' and the left lateral side 530' forms the left barb 53', and the vacant area where the left barb 53' is located is
  • the entire latching blade 5' is penetrated in the opposite direction.
  • a right vertical side 541' disposed in the axial direction and a right lateral side disposed at an angle to the right vertical side 541' are disposed.
  • an angle between the right vertical side 541' and the right lateral side 540' forms the right barb 54', and the vacant area where the right barb 54' is located runs in the forward and reverse directions The entire buckle blade 5'.
  • a further technical solution is that the position of the outer side of the left lateral side 530' and the right lateral side 540' is also Guide chamfers (532', 542') are respectively provided.
  • the left upright block 72 and the right upright block 73 on the base 7 are easily introduced into the assembly.
  • FIG. 19 is a schematic structural view of a third embodiment of the latching blade 5": further improved on the basis of the latching blade 5 of the first embodiment, as shown in FIG.
  • the reverse left protrusion 55 and the reverse right protrusion 56 are not disposed on the latch blade 5", and an outwardly facing left notch is disposed at a middle portion of the outer edge of the left arm 51" 512", an outwardly facing right notch 522" is provided at a central portion of the outer edge of the right arm 52".
  • the left notch 512" and the right notch 522" are disposed on the bottom wall body (534, 544) of the vacant area where the left barb 53" and the right barb 54" are located, and penetrate the plate shape.
  • the base body 50 is disposed on the bottom wall body (534, 544) of the vacant area where the left barb 53" and the right barb 54" are located, and penetrate the plate shape.
  • the strength of the left side arm 51" and the right side arm 52" is adjusted by the arrangement of the left notch 512" and the right notch 522" to make it suitable for the hand to force the swaying
  • the left arm 51" and the right arm 52" of the latch blade 5" are brought closer together in the middle to facilitate the removal of the latch blade 5".
  • the first embodiment is more excellent because the configuration of the left barb 53 and the right barb 54 can increase the left arm 51 and the right arm 52 without adding
  • the barbs (53, 54) are located in the forward direction of the latch blade 5 in the case of the lateral width, which greatly increases the structural strength of the left arm 51 and the right arm 52, wherein The barbs (53, 54) themselves are also capable of enhancing the structural strength of the left arm 51 and the right arm 52.

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Abstract

一种滑轨防脱装置,包括底座(7)和与底座(7)配合的弹扣叶片(5);底座(7)包括一对在它们之间设置有避让空间(70)的竖立块(72,73);弹扣叶片(5)包括一对首尾相连的支臂(51,52),一对支臂(51,52)之间形成中央空缺(591)。在每条支臂(51,52)上设置有L型倒钩(53,54),倒钩(53,54)包括竖向边(531,541)和与横向边(530,540),当弹扣叶片(5)处于自由状态并沿轴向配合在底座(7)上时,弹扣叶片(5)的一对竖向边(531,541)能够被分别限定在底座(7)的一对竖立块(72,73)之间的避让空间(70)内,而一对横向边(530,540)能够同时顶靠在底座(7)的竖立块(72,73)的前端沿上。这样,滑轨防脱装置的防脱性能稳定,以及能够被维修人员有目的地、便捷地拆卸下来。

Description

滑轨防脱装置及其所应用的家具滑轨 技术领域
本发明属于家具用滑轨技术领域,具体涉及一种滑轨防脱装置及其所应用的家具滑轨。
背景技术
家具中常有一些滑动式部件例如抽屉、活动台板通过使用者的拉或推操作驱使其相对家具主体作伸缩滑动。而所述滑动式部件与所述家具主体之间的传统滑动结构是在所述家具主体上设置滑轨,在所述滑动式部件上设置多个滑轮,这样依靠所述滑轮在所述滑轨上的滑行使所述滑动式部件能够相对所述家具主体作伸缩滑动。这样的结构显然非常简单,安装、拆卸也非常便捷。但是在日常使用过程中可以发现,使用者对所述滑动式部件施加的拉力稍稍过大就会将整个滑动式部件例如抽屉、活动台板拉出并脱离所述家具主体而坠落,使所述滑动式部件上的东西散落一地,甚至轧伤使用者的脚部。
针对上述技术问题,现有的解决方案是在所述滑轨上设置防脱落装置。值得注意的是在中国专利201320361976.2中的现有技术部分所披露的一种防脱落装置,该种类型的防脱落装置在家具、办公室用具上最为之常见,其具体结构是:包括设置在外导轨端部限位块上的卡凸部和设置在内导轨上与所述卡凸部卡口配合的弹性拨叉。其中所述弹性拨叉大致呈V型包括右长弹性拨臂和左短弹性拨臂,在所述右长弹性拨臂的右侧设置有大致呈L型的空缺区。在所述右长弹性拨臂和左短弹性拨臂的交汇处设置有安装通孔,安装螺钉通过所述安装通孔把所述弹性拨叉的首端固定到所述内导轨上,在安装状态下,所述右长弹性拨臂的尾端部延伸到所述内导轨外。
当向外拉动所述内导轨时,所述弹性拨叉随所述内导轨向外滑行,当所述右长弹性拨臂空缺区的底部顶压到所述卡凸部上时,所述右长弹性拨臂以所述安装螺钉为绕轴先右侧旋转而紧靠在所述内导轨的竖立侧壁上,从而堵塞所述卡凸部前进的通道而阻碍所述内导轨脱离所述外导轨而往外滑动,进而防止安装在所述内导轨上的滑动式部件脱离所述家具主体而掉落。当需要抽离所述滑动式部件而方便对所述滑动式部件或滑轨进行维修时,可以向左拨动所述右长弹性拨臂的尾端部使所述右长弹性拨臂与所述内导轨的竖立侧壁之间形成避让通道从而让所述卡凸部通过。而外力消除后,所述左短弹性拨臂会驱使所述右长弹性拨臂复位。
其次,在家具中通常安装的抽屉、活动台板之类的抽拉型部件,最原始的方案就是采用滚轮导轨方案,也是目前普通家具中使用最多的方案,后来又发展出滚珠导轨方案,这些滚珠导轨主要分为两节式滚珠导轨和三节式滚珠导轨方案等。我们可以查找的最早的两节式滚珠导轨是中国专利申请号为01242280.0,名称为“滚珠式抽屉导轨”的实用新型专利所披露的一种滚珠式抽屉导轨,其特征是一根对称开有四条滚珠槽的内导轨沿纵向设置于支架另一侧面的顶端,槽型支架的另一侧开有若干个安装孔,一根外导轨套于内导轨上,在两导轨之间设置一个在两端各设有两组滚珠定位孔的滚珠定位套,滚珠放置于滚珠定位孔内并与外、内导轨接触。而可以查找的最早的三节式滚珠导轨方案是中国专利申请号为02205244.5,名称为“三截式导轨”的专利所披露的一种三截式导轨,其后中国专利申请号为200320117910.5、200320117901.6、200320118063.4以及最新提出的申请号为201520918413.8、还有本申请人于2015年8月提出了名称为一种滑轨,中国专利申请号为201520628618.2的三节式导轨技术方案,都从不同的角度提出了各种方案的滑轨结构。不论两节式还是上述这些三节式滚珠导轨技术方案,在关闭抽屉的时候,都存在需要在内侧端设置限位止挡器从而对滑动轨予以内侧端定位的问题。但上述专利申请方案在内侧端所设置的限位止挡器,它们都是在外轨(也称外轨)内侧端设置横向翻起的定位片,还有 的在所述横向翻起的定位片的外面在插接一个橡胶缓冲块。这种结构的限位止挡器,由于所述定位片是薄片结构而且也是单边定位,从而在使用非常容易被撞击变形即向内侧端偏转从而失去限位作用。
其次,上述技术方案中的内、中、外导轨之间所采用的滚珠结构一般都是单层结构,即使存在双层结构但仍然存在晃动间隙大并容易出现磨损和卡滞问题。
发明内容
在现有技术部分披露的防脱落装置采用的是单边顶压防脱而另一边形成收缩避让空间的结构,这种结构的防脱性能不稳定,滑轨在伸缩滑动的过程中,当意外碰撞所述右长弹性拨臂使其向左偏转而在所述右长弹性拨臂与所述内导轨的竖立侧壁之间形成能够让所述卡凸部通过的通道时,所述弹性拨叉也就失去防脱功能。
如何能够有效地防止所述滑动式部件或者说是所述内导轨意外脱落,同时还能够便于滑轨的组装和拆卸一直是研发人员着力解决的技术问题,而其中一个解决方案是所述滑轨防脱装置的设置。本发明也就是着重对所述滑轨防脱装置的结构进行改进,使其具有稳定的防脱性能,以及能够被维修人员有目的性地、便捷地拆卸下来。
其次,对现有技术的分析发现,还有很多方面需要进一步地予以改进从而能够不会明显增加制造成本的情况能够大大提高滚珠导轨的结构性能和使用的友好感受度。其中第一个方面,我们希望在不会明显提高制造成本的情况下改进现有的所述限位止挡器的结构,能够让其更加耐受撞击力而不易变形,而且也能还能提高定位效果。另一方面,我们还需要进一步改进内、中、外导轨本身的结构以及它们所采用滚珠的定位结构,从而能够进一步提高导轨运行的稳定性。
鉴于此,本发明提出一种滑轨防脱装置,包括底座和与所述底座配合的弹扣叶片;其特征在于:
(a)所述底座包括基板及站立设置在所述基板上的一对竖立块即左竖立块和右竖立块,所述左竖立块和右竖立块沿轴向方向延伸布置并且所述左竖立块和右竖立块之间设置有避让空间;
(b)所述弹扣叶片大致呈板状具有基准正向面和与所述基准正向面相反的基准反向面,包括设置有连接孔的头端部和从所述头端部的两边分别引出的两条支臂即左侧臂和右侧臂,所述左侧臂和右侧臂大致同向地向尾端方向延伸并在尾端连接在一起从而在所述弹扣叶片的中央区域形成中央空缺;
(c)在所述弹扣叶片的所述左侧臂上设置有L型的左倒钩,所述左倒钩包括沿轴向方向布置的左竖向边和与所述左竖向边呈角度布置的左横向边,所述左倒钩的L型左转角小于等于90°并且朝向左边和尾端方向;在所述右侧臂上设置有L型的右倒钩,所述右倒钩包括沿轴向方向布置的右竖向边和与所述右竖向边呈角度布置的右横向边,所述右倒钩的L型右转角小于等于90°并且朝向右边和尾端方向;
(d)当所述弹扣叶片处于自由状态并沿轴向配合在所述底座上时,所述弹扣叶片的左竖向边和右竖向边能够被分别限定在所述底座的左竖立块和右竖立块之间的避让空间内,而所述左横向边和右横向边能够同时顶靠在所述底座的左竖立块和右竖立块的前端沿上。
上述特征(a)定义了所述底座的总体结构。其中,首先定义了所述基板是所述底座的主体部,能够为一对所述竖立块提供定位支撑;其次,也定义了所述左竖立块和右竖立块是设置在所述基板上的呈凸起状的构造体从而站立(相对突兀地)设置在所述基板上的。而所述左竖立块和右竖立块沿轴向方向延伸布置并且所述左竖立块和右竖立块之间设置有避让空间的特征首先定义所述竖立块的结构,所述左竖立块和右竖立块在轴向方向上具有一定的延伸长度;然后定义了所述左竖立块和右竖立块之间是间隔设置的,为此在它们之间形成有避让空间。需要特别说明的是,所述轴向是安装有所述底座的滑轨的延伸方向, 或者说是所述滑轨的滑动方向,当把所述底座安装到所述滑轨上后,所述竖立块的延伸方向与所述滑轨的延伸方向一致。
上述特征(b)定义了所述弹扣叶片的总体结构。
其中,所述弹扣叶片大致呈板状具有基准正向面和与所述基准正向面相反的基准反向面,定义了所述弹扣叶片大致形状为板状从而具有板状基体,但并不是说,所述弹扣叶片的板状基体的基准正向面或基准反向面必须是完全平行的两个外表面。所述基准面是指所述弹扣叶片的正反两面中用于确定基准的定位面,它是正反两面中具有最大面积的平坦表面所在的面,就如平坦地表面与突兀升起的高山之间的关系,显然本发明定义的基准面就类似是平坦的地面。为此所述基准面可以是一个确定的平坦面,也可以是一个拟定的设计面。
其中,设置有连接孔的头端部,定义了所述弹扣叶片包括头端部,在所述头端部上设置有连接孔;所述连接孔是用于借助于铆钉类的连接装置将所述弹扣叶片定位到滑轨例如内轨上的定位机构。在对所述内轨施加轴向推力或拉力时,所述轴向力通过铆钉等传递到所述弹扣叶片的头端部上,所述头端部成为所述弹扣叶片的第一受力点。
其中,所述弹扣叶片还包括分别位于所述头端部的两边并大致同向地从所述弹扣叶片的头端部向尾端方向延伸的左侧臂和右侧臂,所述左侧臂和右侧臂在尾端连接在一起从而在所述弹扣叶片的中央区域形成中央空缺。首先定义了所述左侧臂和右侧臂就像圆规的两条腿一样从所述头端部的两边延伸出的结构,但所述左侧臂和右侧臂在尾端又连接在一起从而让所述左侧臂和右侧臂形成了一个整体结构的所述弹性叶片,所述头端部的连接孔的中轴线位于所述左侧臂和右侧臂之间;其次,定义了所述中央空缺的两边臂体就是所述左侧臂和右侧臂,所述中央空缺为所述左侧臂和右侧臂向中间偏移提供了避让空间,因此,在向所述左侧臂和右侧臂施加相对的收紧力时,所述左侧臂和右侧臂能够借助所述中央空缺相对靠近并同时使设置其上的左凸起和右凸起也相对靠近。
所述特征(c)定义了所述左倒钩或右倒钩的总体结构。
其中,L型的所述左倒钩或右倒钩,首先定义的是一种能够实现钩挂的功能,其次定义了一种能够实现钩挂功能的形状或结构;而所述左倒钩的L型左转角朝向左边和尾端方向,定义了所述左倒钩在空间上的转角朝向,既朝向左边也朝向尾端方向,这样卡入其中的所述左竖立块既可以从左边空位离开所述左倒钩,也可以沿从尾端向首端的轴向方向移动进入所述左倒钩。所述右倒钩朝向右边和尾端方向,也是同样的含义。
所述特征(d)定义了所述左倒钩或右倒钩与所述底座的配合关系。
其中,所述弹扣叶片的左竖向边和右竖向边能够被分别限定在所述底座的左竖立块和右竖立块之间的避让空间内,定义了在没有施加外力影响所述弹扣叶片的自由状态下,所述左竖向边和右竖向边之间的间距加上所述左竖向边和右竖向边本身的横向厚度小于所述避让空间的横向宽度,这样所述底座的左竖立块或右竖立块能够分别被卡入到所述左倒钩或右倒钩内。
根据上述技术方案,但将所述滑轨防脱装置安装到所述滑轨上后,由于所述弹扣叶片在总体上呈两端连接而中间具有所述中央空缺的形状,当所述底座上的左竖立块或右竖立块分别被卡入到所述左倒钩或右倒钩内时,用力掰动所述弹扣叶片的所述左侧臂和右侧臂向中间靠拢时,能够让所述左侧臂和右侧臂分别离开所述左倒钩或右倒钩从而让所述弹扣叶片与所述底座之间脱扣;另外,当所述左竖立块或右竖立块能够分别被卡入到所述左倒钩或右倒钩内时,如果给所述内轨施加向外侧方向的轴向拉力,该拉力通过所述弹扣叶片的头端部及所述左侧臂和右侧臂传递给所述左倒钩、右倒钩并被所述底座上的左竖立块和右竖立块反向阻挡,此时由于所述弹扣叶片的头端部的中轴线位于所述左侧臂和右侧臂之间,为此该拉力会使所述左侧臂和右侧臂同时向外侧横向偏移,从而所述左倒钩、右倒钩也分别紧紧地贴在所述左竖立块、右竖立块上,让所述弹扣叶片不能脱离所述底座。也为 此,与现有技术相比,本发明的有益技术效果在于:
1.为此非常巧妙地能够让所述左侧臂和右侧臂彼此成为对方的弹性支点,即在所述左侧臂和右侧臂彼此收拢后容易恢复至原状。
2.所述左侧臂和右侧臂的首尾段连接在一起,大大提高所述弹扣叶片在整体上的结构强度。
3.所述左侧臂和右侧臂能够均分所受外力,大大降低了所述弹扣叶片在材料选择上的严格要求,例如所述弹扣叶片可以选择具有弹性的普通塑料制造也不至于容易损坏。
进一步的技术方案还可以是,所述左倒钩设置在所述左侧臂的大致中段部位,所述右倒钩设置在所述右侧臂的大致中段部位。
进一步的技术方案还可以是,所述弹扣叶片的所述左倒钩与所述右倒钩左、右对称布置。
进一步的技术方案还可以是,所述左侧臂、右侧臂分别呈中间宽而头尾两端收窄的形状。让所述左侧臂、右侧臂分别呈中间宽的形状,能够大大中部位置的结构强度,从而让设置在中部位置的所述左倒钩与所述右倒钩的结构强度也大大提高;而让所述左侧臂、右侧臂分别呈头尾两端收窄的形状,能够容易让所述左侧臂、右侧臂变形从而易于装配和拆卸所述弹扣叶片及所述内轨。
进一步的技术方案还可以是,所述左侧臂、右侧臂的头尾两端的最小横截面积是中段部位的最大横截面的10%到40%。
进一步的技术方案还可以是,在所述弹扣叶片的所述左侧臂上设置有凸出于反向面的反向左凸块,在所述右侧臂上设置有凸出于反向面的反向右凸块。这样能够借助于所述反向左凸块、反向右凸块以及与它们的配合的设置在所述内轨上的左接纳孔和右接纳孔,进一步分解所述底座上的左竖立块和右竖立块反向施加给所述左侧臂和右侧臂的反向作用力,或者说,向外拉动所述内轨时产生的拉力,通过所述弹扣叶片的头端部、所述反向左凸块及反向右凸块三者均匀地向所述弹扣叶片的左侧臂、右侧臂传递即向外拉动所述内轨的拉力被所述弹扣叶片的头端部和所述反向左凸块、反向右凸块三者分担,从而大大降低了拉动所述内轨的拉力对所述弹扣叶片的挤压破坏作用。在该方案中,最好的方案是将所述反向左凸块、反向右凸块对应地设置在所述左倒钩、所述右倒钩的背面,让所述弹扣叶片的左侧臂、右侧臂所受到的正、反两个方向的力矩具有最短的力臂长度,从而更加让所述弹扣叶片的左侧臂、右侧臂不易受到损坏。
进一步的技术方案还可以是,在所述左横向边、所述右横向边的外侧顶端沿位置分别设置有导向倒角。这样在装配所述弹扣叶片容易导入所述底座上的左竖立块和右竖立块。其中,所述导向倒角不是指制造所述弹扣叶片时在模具上必须使用的工艺过渡圆角,而是比该工艺过渡圆角的转弯半径要大一些的过渡圆角。
进一步的技术方案还可以是,在所述弹扣叶片的尾端部设置有凸出于所述基准正向面的尾端凸起。这样能够大大提高所述尾端部位的结构强度,不仅便于制造出模而且也能够提高所述弹扣叶片的结构强度。
进一步的技术方案还可以是,在所述弹扣叶片的所述左侧臂上设置有凸出于所述基准正向面的正向左凸块,所述左倒钩形成在所述正向左凸块上从而所述正向左凸块包括有沿轴向方向布置的左竖向凸边和与所述左竖向凸边呈角度布置的左横向凸边,所述左竖向凸边与所述左横向凸边之间的夹角形成所述左倒钩;在所述右侧臂上设置有凸出于所述基准正向面的正向右凸块,所述右倒钩形成在所述正向右凸块上从而所述正向右凸块包括有沿轴向方向布置的右竖向凸边和与所述右竖向凸边呈角度布置的右横向凸边,所述右竖向凸边与所述右横向凸边之间的夹角形成所述右倒钩。
该特征定义所述左倒钩和所述右倒钩形成的位置及其结构。根据本发明的方案,其实形成所述左倒钩和所述右倒钩可以有多种方案,其中第一种是直接在所述左侧臂的左侧或 所述右侧臂的右侧形成L型的倒钩,所述倒钩所在的空缺区域在正反方向上贯穿整个所述弹扣叶片的板状基体;第二种方案是,在所述弹扣叶片的所述侧臂上设置有凸出于所述基准正向面的正向凸块,所述钩体不仅设置在所述正向凸块部位而且所述倒钩所在的空缺区域也可以是在正反方向上贯穿整个所述弹扣叶片所述板状基体;第三种方案是,在第二种方案的基础上,所述钩体设置在所述正向凸块部位但所述倒钩所在的空缺区域在正反方向上并不贯穿整个所述弹扣叶片的所述板状基体,让所述倒钩形成在所述正向凸块上从而所述正向凸块包括有沿轴向方向布置的竖向凸边和与所述竖向凸边呈角度布置的横向凸边,所述倒钩在反向面侧还具有底壁体,从而当所述底座上的左竖立块、右竖立块插入到所述倒钩中时,所述底壁体也是覆盖在所述左竖立块、右竖立块上。这样的构造主要优点是在不增加所述左侧臂、右侧臂的横向宽度的情况下让所述倒钩位于所述弹扣叶片的正向面方向,大大提高了所述左侧臂、右侧臂的结构强度,其中所述钩体本身也都能够增强所述左侧臂、右侧臂的结构强度。其中所述空缺区域就是所述左倒钩或所述右倒钩的两个边所构成夹角范围。
进一步的技术方案还可以是,所述左倒钩和所述右倒钩所在空缺区域在正反方向上并不贯穿整个所述弹扣叶片的板状基体而具有底壁体,在所述左倒钩、所述右倒钩所在空缺区域的所述底壁体上分别设置有贯穿所述板状基体并朝外的左空缺、右空缺。
进一步的技术方案还可以是,在所述弹扣叶片的头端部与所述左横向凸边之间设置有沿所述左侧臂延伸的用于引导所述左竖立块平滑滑入的左侧向引导斜坡面,所述左侧向引导斜坡面一端连贯在所述弹扣叶片的头端部上,另一端连贯在所述左横向凸边的外侧顶端沿;在所述弹扣叶片的头端部与所述右横向凸边之间设置有沿所述右侧臂延伸的用于引导所述右竖立块平滑滑入的右侧向引导斜坡面,所述右侧向引导斜坡面一端连贯在所述弹扣叶片的头端部上,另一端连贯在所述右横向凸边的外侧顶端沿。
其中,所述左侧向引导斜坡面,是指所述斜坡面位于所述弹扣叶片的左侧臂的左侧竖立面(或者说朝向左边方向),其次定义了所述斜坡面主要起引导所述底座上的左竖立块平滑滑入所述左倒钩的功能;这样当从所述中轨的外侧端插接安装所述内轨到所述中轨上时,起初所述左侧臂的前端被所述底座的左竖立块顶压稍微变形,所述底座上的左竖立块能够沿所述左侧向引导斜坡面滑动随后滑入进入到所述左倒钩中,同理,所述右侧向引导斜坡面也具有相应的功能和结构。
其中,所述左横向凸边的外侧顶端沿,是指位于左边外侧的顶端边缘,同理,所述右横向凸边的外侧顶端沿也具有相应的功能和结构。
进一步的技术方案还可以是,在所述弹扣叶片的头端部与所述左横向凸边之间的正向面方向上设置有沿所述左侧臂延伸并平滑抬升的正向左斜坡面,所述正向左斜坡面一端连贯在所述弹扣叶片的头端部上,另一端连贯在所述左横向凸边的正向顶端沿;在所述弹扣叶片的头端部与所述右横向凸边之间的正向面方向上设置有沿所述右侧臂延伸并平滑抬升的正向右斜坡面,所述正向右斜坡面一端连贯在所述弹扣叶片的头端部上,另一端连贯在所述右横向凸边的正向顶端沿。
其中,所述正向左斜坡面或所述正向右斜坡面,主要是能够提升所述左倒钩或右倒钩到所述弹扣叶片的头端部之间线段臂体的结构强度,又能让所述左横向凸边及所述右横向凸边不至于突兀地凸出而被容易撞击破坏,所述正向斜坡面类似于河堤护堤坡。
应用所述滑轨防脱装置的家具滑轨,所述家具滑轨包括大致呈U型槽状的中轨及内轨,所述中轨与内轨的槽口朝向相反并且所述内轨轴向滑动布置在所述中轨的U型槽内;其特征在于:在所述中轨的靠外端端部的U型槽内布置所述底座,所述底座固连在所述中轨U型槽的槽底壁上并让所述底座上设置的左竖立块和右竖立块位于所述内轨的轴向方向;通过连接钉穿过所述弹扣叶片头端部的连接孔将所述弹扣叶片固连在所述内轨的U型槽的槽底壁上,让所述弹扣叶片的反向面贴合在所述内轨U型槽的槽底壁上并让所述弹扣叶片的 两条支臂向所述内轨的外侧端方向延伸。
进一步的技术方案还可以是,在所述内轨U型槽的槽底壁上还设置有能够接纳所述反向左凸块的左接纳孔,所述反向左凸块伸入到所述左接纳孔内,所述反向左凸块的横向宽度小于所述左接纳孔的横向宽度,所述反向左凸块的前端顶靠在所述左接纳孔的孔壁上;在所述内轨U型槽的槽底壁上还设置有能够接纳所述反向右凸块的右接纳孔,所述反向右凸块伸入到所述右接纳孔内,所述反向右凸块的横向宽度小于所述右接纳孔的横向宽度,所述反向右凸块的前端顶靠在所述右接纳孔的孔壁上。这样所述接纳孔能够在横向方向上为所述反向凸块提供能够左右移动的避让空间但在轴向上能够顶压住所述反向凸块从而将轴向力矩传递给所述反向凸块。
进一步的技术方案还可以是,还包括大致呈U型槽状的外轨,所述中轨滑动设置在所述外轨的U型槽内并且所述中轨与所述外轨的槽口朝向相同;所述外轨具有槽底壁和槽侧壁,在所述外轨的靠内侧端的U型槽内设置有能够阻止所述中轨滑行的限位止挡器从而能够限定所述中轨在所述外轨上向内侧端方向的滑行行程;所述限位止挡器包括至少一个沿轴向方向延伸布置的轴向竖立片;所述限位止挡器包括缓冲软垫块,所述缓冲软垫块插接在所述轴向竖立片上,所述缓冲软垫块的高度大于或等于所述轴向竖立片的竖立高度但矮于所述内轨的槽底壁。
其中,所述外轨、中轨和内轨是组成所述滑轨主体部分的三节相互独立的导轨。把所述家用导轨安装到家具中后,所述外轨安装固定在家具上为所述中轨和内轨提供定位支撑。而所述内轨是相对所述外轨靠近家具抽拉型活动部件一侧的导轨,一般情况下把所述内轨与家具抽拉型活动部件固定连接,在拉动所述抽拉型活动部件伸缩移动的同时,所述抽拉型活动部件也会拉动所述内轨一起滑动,而所述中轨是滑动设置在所述外轨和内轨之间的导轨。
其中,在所述外轨的内侧端的U型槽内设置有能够阻止所述中轨和内轨滑行的限位止挡器从而能够限定所述中轨和内轨向内侧端方向的滑行行程,上述特征主要定义了所述限位止挡器的功能,所述限位止挡器能够限定所述中轨和内轨向内侧端方向的滑行行程,避免所述中轨和内轨从内侧端脱离所述外轨,甚至碰撞到家具中而对家具做成损坏。而所述限位止挡器可以直接同时阻止所述中轨和内轨的滑行;或者在所述内轨和中轨之间设置限定所述内轨在所述中轨上向内侧端方向的滑行行程的内轨限位器,而所述限位止挡器直接阻止所述中轨的滑行,这样,在所述限位止挡器阻止所述中轨在所述外轨上滑行时,也间接限定了所述内轨在所述外轨上的滑行。
其中,所述外侧端和内侧端是以它们之间相对的方位命名的,把靠近所述中轨和内轨伸出方向的一侧为外侧端,相对的一端为内侧端。
其中,所述限位止挡器包括所述限位止挡器包括至少一个沿轴向方向延伸布置的轴向竖立片,上述特征首先定义了所述竖立片的结构形状,所述竖立片呈片状的凸兀体。其次还定义了所述竖立片的设置方式,当仅仅设置一个所述竖立片时,所述竖立片是沿轴向方向延伸布置的轴向竖立片,而当所述竖立片的数量为多个时,可以选择性地设置一个轴向竖立片以及一个沿横向方向延伸布置的横向竖立片,又或者一对相互平行设置的轴向竖立片,还可以在一对相互平行设置的轴向竖立片之间设置一个沿横向方向延伸布置的横向竖立片。当然除了设置所述竖立片外,还可以增设其他的限位止挡构造体。而所述轴向是所述家具导轨的延伸方向或滑动方向。
其中,所述缓冲软垫块插接在所述轴向竖立片上,这样,所述缓冲软垫块是独立于所述轴向竖立片但插接在所述轴向竖立片上的独立构件,为此所述缓冲软垫块可以采用与所述轴向竖立片不同的材质制造,例如具有缓冲性能的塑料、橡胶料等。
根据上述的技术方案,与现有技术相比,本发明的有益效果在于:
1.由于所述限位止挡器包括至少一个站立设置在所述外轨的槽底壁上的竖立片,所述 竖立片中至少包括一个沿轴向方向延伸布置的轴向竖立片,为此,在所述中轨和内轨向内侧端方向滑行并对所述轴向竖立片施加撞击力时,所述轴向竖立片不容易出现受力折弯变形的情况,即使出现折弯变形的情况,所述轴向竖立片仍然可以保持站立的状态而不会躺下,为此仍然具有限定所述中轨和内轨向内侧端方向的滑行行程的功能。这样,所述轴向竖立片沿轴向方向延伸的布局方式提高了所述限位止挡器承受撞击力的能力。
2.由于所述缓冲软垫块插接在所述轴向竖立片上,为此,所述缓冲软垫块能够减缓所述中轨和内轨向内侧端方向滑行时对所述轴向竖立片的撞击力,也能够降低所述中轨和内轨撞击在所述轴向竖立片上产生的噪音量。
3.由于所述缓冲软垫块的高度大于或等于所述轴向竖立片的竖立高度,这样,所述缓冲软垫块基本上能够完全包裹所述轴向竖立片,避免所述中轨和内轨直接撞击在所述轴向竖立片上而对所述轴向竖立片造成过大的损坏。
4.由于所述缓冲软垫块的高度矮于所述内轨的槽底壁,这样,所述缓冲软垫块并不高出于所述内轨的槽底壁,当在所述内轨上安装所述家具抽拉型活动部件时,所述缓冲软垫块并不会阻碍所述家具抽拉型活动部件的安装。
所述缓冲软垫块可以缓冲所述中轨和内轨的撞击力,为了能够优化所述缓冲软垫块的缓冲性能,进一步采用如下的方案,从俯视方向看,所述缓冲软垫块大致呈梯形从而具有宽端部和窄端部,所述窄端部朝所述中轨和内轨方向布置,所述窄端部的外侧端设置有向左、右两边横向凸出的凸起。
其中,所述从俯视方向看的特征定义了观察所述缓冲软垫块的方向,把所述缓冲软垫块安装在所述外轨上并把所述外轨平卧放置,此时所述外轨的U型槽口朝上,在这种状态下,把从上往下看的方向定义为所述从俯视方向看。
其中,所述窄端部的外侧端设置有向左、右两边横向凸出的凸起,这样,在所述凸起与所述宽端部之间形成收窄过渡部。而所述凸起的横向宽度是比所述宽端部的横向宽度小。
而为了能够优化所述导轨的使用性能,还需要进一步优化所述中轨结构,进一步的技术方案是:在所述中轨内侧端的槽底壁上设置有呈U型的中轨叉口槽,所述中轨叉口槽的内侧端在横向方向上稍微相对收窄从而呈束口状,所述中轨叉口槽适配于所述缓冲软垫块的窄端部,当推进所述中轨让所述中轨叉口槽插接到所述缓冲软垫块上时,所述中轨叉口槽能够含着所述缓冲软垫块的窄端部。
其中,所述中轨叉口槽的内侧端在横向方向上稍微相对收窄从而呈束口状,这样,在横向方向上,所述中轨叉口槽的内侧槽口的横向宽度比所述中轨叉口槽的外侧槽底的横向宽度小。
其中,所述中轨叉口槽适配于所述缓冲软垫块的窄端部,上述特征定义了所述缓冲软垫块的窄端部与所述中轨叉口槽具有大体上一致的形状和配合尺寸。这样所述中轨叉口槽的外侧端与所述缓冲软垫块的左、右凸起适配,而所述中轨叉口槽的内侧端与所述缓冲软垫块的收窄过渡部适配。
根据上述技术方案,当向内侧端推进所述中轨并让所述中轨叉口槽插接到所述缓冲软垫块上,所述中轨叉口槽的外侧槽口咬合在所述缓冲软垫块的收窄过渡部上,此时所述中轨叉口槽的外侧槽口实际上已经被卡在所述缓冲软垫块的左、右凸起与所述宽端部之间,所述中轨叉口槽含着所述缓冲软垫块的窄端部。这样,借助所述中轨叉口槽与所述缓冲软垫块的窄端部的配合能够对插接到所述缓冲软垫块上的中轨进行定位,防止所述中轨碰撞到所述缓冲软垫块上后受所述缓冲软垫块给予的反撞击力的影响而反弹向外侧端方向滑行。
另外,还可以对所述内轨的结构进行进一步的改进,具体技术方案是:所述内轨内侧端的槽侧壁在横向方向上稍微相对收窄从而呈束口状,所述内轨的内侧端适配于所述缓冲 软垫块的宽端部,当推进所述内轨让所述内轨插接到所述缓冲软垫块上时,所述内轨内侧端的槽侧壁能够含着所述缓冲软垫块的宽端部。
其中,所述内轨内侧端的槽侧壁在横向方向上稍微相对收窄从而呈束口状,这样在所述内轨的内侧端形成收窄的束口部。
根据上述技术方案,所述内轨内侧端与所述缓冲软垫块的宽端部之间采用的配合结构与所述中轨内侧端与所述缓冲软垫块的窄端部之间采用的配合结构是类似的,也取得了类似的效果。当推进所述内轨让所述内轨插接到所述缓冲软垫块上时,所述内轨内侧端的槽侧壁能够含着所述缓冲软垫块的宽端部,借助所述内轨内侧端与所述缓冲软垫块的宽端部的配合能够起到到位所述内轨,防止所述内轨碰撞到所述缓冲软垫块上后受所述缓冲软垫块给予的反撞击力的影响而反弹向外侧端方向滑行。
而为了使所述外轨、中轨和内轨之间的相对滑行更加平稳,进一步对所述外轨、中轨和内轨的结构进行改进,进一步的技术方案是:所述外轨的槽侧壁的内侧布置有两条上、下平行排列的第一滚珠槽,所述内轨的槽侧壁的外侧布置有两条上、下平行排列的第四滚珠槽,所述中轨的槽侧壁的外侧布置有适配于所述第一滚珠槽的两条上、下平行排列的所述第二滚珠槽,所述第一滚珠槽与所述第二滚珠槽之间的局部段设置有带骨架的第一滚珠总成;所述中轨的槽侧壁的内侧布置有适配于所述第四滚珠槽的两条上、下平行排列的所述第三滚珠槽,所述第三滚珠槽与所述第四滚珠槽之间的局部段设置有带骨架的第二滚珠总成。
其中,带骨架的第一滚珠总成是指,所述第一滚珠总成不仅设置有滚珠,还包括有用于支撑定位所述滚珠的骨架。而带骨架的第二滚珠总成也是指,所述第二滚珠总成不仅设置有滚珠,还包括有用于支撑定位所述滚珠的骨架。
其中,所述第一滚珠槽与所述第二滚珠槽之间的局部段设置有带骨架的第一滚珠总成,上述特征定义了所述第一滚珠总成的长度,所述第一滚珠总成具有所述第一滚珠槽与所述第二滚珠槽局部段的长度,所述第一滚珠总成的长度小于所述第一滚珠槽与所述第二滚珠槽的长度。当所述中轨在所述外轨上滑行的过程中,所述第一滚珠总成也会随所述中轨滑行并为所述中轨提供平稳的滑行支撑。为此设置局部段长度的第一滚珠总成能够节省所述第一滚珠总成的耗材量。同样地,所述第三滚珠槽与所述第四滚珠槽之间的局部段设置有带骨架的第二滚珠总成具有类似的效果,为此不再重复论述。
根据上述方案,在所述外轨与所述中轨之间,所述中轨和所述内轨之间都分别设置有双层滚珠结构,借助所述双层滚珠能够使所述外轨与所述中轨,所述中轨和所述内轨在上、下方向上分别具有均匀的滑行间隙,从而避免所述中轨、内轨在滑行的过程中出现上、下方向上的晃动而出现卡滞、磨损等现象进而影响到滑行。
为了安装所述滚珠,往往是采用在所述骨架上设置安装滚珠的滚珠安装孔,而在上述双层结构滚珠组中,如果上、下排滚珠采用上、下对应设置的方式时,相应地需要使所述滚珠安装孔上、下对应设置,这样,上、下对应设置的所述滚珠安装孔明显会削弱所述骨架的结构强度,使所述骨架非常容易出现损坏。为此如何设置所述上、下层滚珠也是值得我们深究的问题。
针对上述问题,首先对所述第一滚珠总成的结构进行改进,具体的改进方案是:
所述带骨架的第一滚珠总成包括呈板状的第一骨架和设置在所述第一骨架上的第一滚珠群,所述第一滚珠群包括第一上排滚珠组和第一下排滚珠组,所述第一上排滚珠组中的滚珠与所述第一下排滚珠组中的滚珠在上、下方向上错位布置。
其中,所述第一上排滚珠组中的滚珠与所述第一下排滚珠组中的滚珠在上、下方向上错位布置也能够使用于安装定位所述滚珠定位构造体,例如第一上排滚珠安装孔与所述第一下排滚珠安装孔在上、下方向上错位布置,从而使所述骨架具有适当的结构强度。而且在此错位布置的方式中,所述第一下排滚珠组中的滚珠可以靠近甚至稍稍伸入到第一上排 滚珠组中相邻的两个滚珠之间的空间中,从而能够适当地减少所述第一滚珠总成的高度,减少其在高度方向上的占用空间,从而有利于缩少所述家具导轨的整体高度。
所述第一上排滚珠组在所述外轨和中轨之间滑行时,由于第一上排滚珠组的前后两端起始位置是主要受力部而非常容易使所述第一骨架与所述外轨或中轨接触产生摩擦而损坏,鉴于此,进一步的改进方案是,所述第一上排滚珠组或所述第一下排滚珠组中的其中一排滚珠在所述第一骨架上的前后两端起始位置的滚珠间隔间距小于中段位置的滚珠间隔间距。这样,在所述第一上排滚珠组的前后两端起始位置的滚珠相对密集能够使所述第一骨架与所述外轨或中轨保持合适的间隙空间,避免或减少所述第一骨架与所述外轨或中轨接触产生摩擦而损坏。其次,上述相对密集的滚珠还能够为所述外轨和中轨提供更加平稳的支撑。
进一步的技术方案是,在所述第一骨架两侧并对应于所述第一上排滚珠组和第一下排滚珠组的位置分别设置有凸出筋条。这样,借助所述凸出筋条进一步减少所述第一骨架与所述外轨、中轨的接触面积,进一步减少对所述第一骨架的磨损。另外借助所述凸出筋条还能够加强所述第一骨架两侧的结构强度。
另外,还对所述第二滚珠总成的结构进行改进,具体的改进方案是:
所述带骨架的第二滚珠总成包括呈U型槽状的第二骨架和设置在所述第二骨架的槽侧壁上的第二滚珠组,所述第二滚珠组包括第二上排滚珠组和第二下排滚珠组,所述第二上排滚珠组中的滚珠与所述第二下排滚珠组中的滚珠在上、下方向上错位布置。这样,可以取得与所述第一上排滚珠组中的滚珠与所述第一下排滚珠组中的滚珠在上、下方向上错位布置类似的效果。
进一步的技术方案还可以是,所述第二骨架的槽侧壁被分割为间隔布置的小岛,每个所述小岛上设置三个呈三角形布置的滚珠。这样,所述第二骨架具有一定的弹性变形能力,当所述内轨与所述中轨之间的轴向滑行间隙的大小由于制造误差、或装配误差而在某段位置出现变化时,所述第二骨架能够依靠自身的弹性变形能力适当调整形状从而能够防止被卡滞在所述内轨和所述中轨之间。
附图说明
图1是应用本发明技术方案的家具滑轨的俯视方向的结构示意图;
图2是图1所示的家具滑轨的分解结构示意图;
图3是图1中A-A方向的剖视结构示意图;
图4是图3的分解示意图,为了简化视图,图中省略了所述缓冲软垫块4、弹扣叶片5;
图5是所述第一骨架610的正视方向的结构示意图;
图6是所述缓冲软垫块的俯视方向的结构示意图;
图7是所述内轨3的在内侧端位置的剖面结构示意图;
图8是所述中轨2的俯视方向的结构示意图;
图9是图8中B区域的局部放大图;
图10是所述底座7的俯视方向的结构示意图;
图11是所述底座7的立体结构示意图;
图12是把图11所示的所述底座7翻转过来后观察所得的立体结构示意图;
图13是应用第一种实施方式的所述弹扣叶片5的俯视方向的结构示意图,图中所述弹扣叶片5的基准正向面5a朝上;
图14是把图13所示弹扣叶片5翻转过来后观察所得的结构示意图,图中所述弹扣叶片5的反向面5b朝上;
图15是图13所示弹扣叶片5的侧视方向的结构示意图;
图16是应用第一种实施方式的所示弹扣叶片5的立体结构示意图;
图17是所述反向凸块(55、56)与所述接纳孔(34、34a)之间配合关系的示意图;
图18是应用第二种实施方式的所述弹扣叶片5'的俯视方向的结构示意图;
图19是应用第三种实施方式的所述弹扣叶片5"的俯视方向的结构示意图。
具体实施方式
在家具中通常会安装一些抽屉、活动台板之类的抽拉型部件,而为了能够为所述抽拉型部件提供滑动支撑,在所述抽拉型部件与所述家具之间设置有家具滑轨。如图1和图2是应用本发明技术方案的一种新型结构的三折伸缩型家具导轨100,包括大致呈U型槽状的外轨1、中轨2和内轨3。所述中轨2轴向滑动设置在所述外轨1的U型槽内并且所述中轨2与所述外轨1的槽口朝向相同,所述内轨3轴向滑动设置在所述中轨2的U型槽内并且所述中轨2与所述内轨3的槽口朝向相反;在所述外轨1的内侧端1a的U型槽内设置有能够阻止所述中轨2和内轨3向内滑行的限位止挡器从而能够限定所述中轨2和内轨3向内侧端方向的滑行行程;而在所述中轨2与所述内轨3之间设置有能够防止所述内轨3意外脱离所述中轨2的滑轨防脱装置。
当把所述家具导轨100安装到家具中后,所述外轨1安装固定在家具上为所述中轨2和内轨3提供定位支撑。所述内轨3是相对所述外轨1靠近家具抽拉型活动部件一侧的导轨,一般情况下把所述内轨3与家具抽拉型活动部件固定连接,在拉动所述抽拉型活动部件伸缩移动的同时,所述抽拉型活动部件也会拉动所述内轨3一起滑动,而所述中轨2是滑动设置在所述外轨1和内轨3之间的导轨。而为了下面论述的方便,我们先对所述家具导轨100的两个端部分别进行定义,把靠近所述中轨2和内轨3伸出方向的一端定义为外侧端,相对的另一端定位为内侧端。
下面结合附图2、图3、图4和图5先对所述外轨1、中轨2和内轨3之间的滑行结构作介绍:
如图3和图4所示,所述外轨1、所述中轨2和所述内轨3都大致呈U型槽状,为此它们分别具有槽底壁以及分别竖立设置在所述槽底壁两侧的竖立槽侧壁。在所述外轨1的一对槽侧壁10的内侧分别布置有两条上、下平行排列的第一滚珠槽101,所述内轨3的一对槽侧壁30的外侧分别布置有两条上、下平行排列的第四滚珠槽301,所述中轨2的一对槽侧壁20的外侧分别布置有适配于所述第一滚珠槽101的两条上、下平行排列的所述第二滚珠槽201,所述第一滚珠槽101与所述第二滚珠槽201之间设置有带骨架的第一滚珠总成61,所述第一滚珠总成61的长度短于所述第一滚珠槽101与所述第二滚珠槽201的长度,为此所述第一滚珠总成61仅仅设置在所述第一滚珠槽101与所述第二滚珠槽201之间的局部段内。这样,当所述中轨2在所述外轨1上滑行的过程中,所述第一滚珠总成61也会随所述中轨2滑行并为所述中轨2提供平稳的滑行支撑。另外,所述中轨2的一对槽侧壁20的内侧分别布置有适配于所述第四滚珠槽301的两条上、下平行排列的所述第三滚珠槽202,所述第三滚珠槽202与所述第四滚珠槽301之间带骨架的第二滚珠总成62,同样地,所述第二滚珠总成62的长度短于所述第三滚珠槽202与所述第四滚珠槽301的长度,为此所述第二滚珠总成62仅仅设置在所述第三滚珠槽202与所述第四滚珠槽301之间的局部段内。这样,当所述内轨3在所述中轨2上滑行的过程中,所述第二滚珠总成62也会随所述内轨3滑行并为所述内轨3提供平稳的滑行支撑。
如图3和图5所示,所述带骨架的第一滚珠总成61包括呈板状的第一骨架610和设置在所述第一骨架610上的第一滚珠组,所述第一滚珠组包括第一上排滚珠组611和第一下排滚珠组611a。在所述第一骨架610上按照所述滚珠组(611、611a)中的滚珠的布局位置相应地设置有用于安装所述滚珠的滚珠安装孔6100。如果第一上排滚珠组611和第一下排滚珠组611a中的滚珠采用上、下对应设置的方式时,相应地需要使所述滚珠安装孔6100上、下对应设置,这样,上、下对应设置的所述滚珠安装孔6100明显会削弱所述第一骨架610的结构强度,使所述第一骨架610非常容易出现损坏。鉴于此与现有常用 的技术方案不同,本发明的所述第一上排滚珠组611中的滚珠与所述第一下排滚珠组611a中的滚珠在上、下方向上错位布置。这样就能巧妙地解决了上技术问题,使所述第一骨架610具有适当的结构强度。而且在此错位布置的方式中,所述第一下排滚珠组611a中的滚珠可以靠近甚至稍稍伸入到第一上排滚珠组611中相邻的两个滚珠之间的空间中,从而能够适当地减少所述第一滚珠总成61的高度,减少其在高度方向上的占用空间,有利于缩少所述家具导轨100的整体高度。
而经过长期的实验发现,所述第一上排滚珠组611在所述外轨1和中轨2之间滑行时,由于第一上排滚珠组611的前后两端起始位置是主要受力部而非常容易使所述第一骨架610与所述外轨1或中轨2接触产生摩擦而损坏,鉴于此,进一步的改进方案是,如图5所示,所述第一下排滚珠组611a在所述第一骨架610上的前后两端起始位置的滚珠间隔间距(L1、L3)小于中段位置的滚珠间隔间距L2。这样,在所述第一下排滚珠组611a的前后两端起始位置的滚珠相对密集能够使所述第一骨架610与所述外轨1或中轨2保持合适的间隙空间,避免或减少所述第一骨架610与所述外轨1或中轨2接触产生摩擦而损坏。其次,上述相对密集的滚珠还能够为所述外轨1和中轨2提供更加平稳的支撑。当然作为另一种实施方式,还可以是所述第一上排滚珠组611前后两端起始位置设置相对密集的滚珠也是可以的。
进一步的,在所述第一骨架610两侧并对应于所述第一上排滚珠组611和第一下排滚珠组611a的位置分别设置有凸出筋条(612、612a)。这样,借助所述凸出筋条(612、612a)进一步减少所述第一骨架610与所述外轨1、中轨2的接触面积,以及减少对所述第一骨架610的磨损。另外借助所述凸出筋条(612、612a)还能够加强所述第一骨架610两侧的结构强度。
如图2和图4所示,所述带骨架的第二滚珠总成62包括呈U型槽状的第二骨架620和设置在所述第二骨架620的槽侧壁上的第二滚珠组,所述第二滚珠组包括第二上排滚珠组621和第二下排滚珠组621a,所述第二上排滚珠组621中的滚珠与所述第二下排滚珠组621a中的滚珠在上、下方向上错位布置。这样,可以取得与所述第一上排滚珠组611中的滚珠与所述第一下排滚珠组611a中的滚珠在上、下方向上错位布置类似的效果。
进一步地,所述第二骨架620的槽侧壁被分割为间隔布置的小岛623,每个所述小岛623上设置三个呈三角形布置的滚珠安装孔624,在每个所述滚珠安装孔624上安装有滚珠。这样,所述第二骨架620具有一定的弹性变形能力,当所述内轨3与所述中轨2之间的轴向滑行间隙的大小由于制造误差或装配误差而在某段位置出现变化时,所述第二骨架620能够依靠自身的弹性变形能力适当调整形状从而能够防止被卡滞在所述内轨3和所述中轨2之间。
综上所述,在所述外轨1与所述中轨2之间,所述中轨2和所述内轨3之间都分别设置有双层滚珠结构,借助所述双层滚珠结构能够使所述外轨1与所述中轨2,所述中轨2和所述内轨3在上、下方向上分别具有均匀的滑行间隙,从而避免所述中轨2、内轨3在滑行的过程中出现上、下方向上的晃动而出现卡滞、磨损等现象进而影响到滑行效果。
所述中轨2和所述内轨3向内侧端方向的滑行行程是通过所述限位止挡器予以限定的,所述限位止挡器可以同时直接阻挡所述中轨2和所述内轨3;还可以采用如图2所示的方式,在所述内轨3的外侧端设置向下折弯边31,所述内轨3能够通过所述下折弯边31顶靠所述中轨2的外侧端而限定在所述中轨2上,而所述中轨2是直接通过所述限位止挡器限定在外轨1上向内侧端方向的滑行行程,这样,所述限位止挡器与所述向下折弯边31能够共同限定所述内轨3在外轨1上向内侧端方向的轴向滑行行程。
在本发明中,所述限位止挡器的结构也是与众不同的,下面结合附图2、图6、图7、图8和图9对所述限位止挡器的具体结构作介绍。
如图2所示,所述限位止挡器包括站立设置在所述外轨1的槽底壁11的内侧端上的一对轴向竖立片(12、12a),所述轴向竖立片(12、12a)与所述外轨1一体成形例如 采用冲压直接一体成型。所述站立的含义主要在于所述轴向竖立片(12、12a)设置为大致垂直于所述槽底壁11的方向可以是90°也可以是稍微小于90°。所述轴向是所述家具导轨100的延伸方向。这样,在所述中轨2和内轨3向内侧端方向轴向滑行并对所述轴向竖立片(12、12a)施加轴向撞击力时,所述轴向竖立片(12、12a)不容易出现受力折弯变形特别是在轴向方向倾倒变形躺下,为此所述轴向竖立片(12、12a)沿轴向方向延伸的布局方式大大提高了所述限位止挡器承受冲击力的能力。实质上,在所述外轨1的槽底壁11的内侧端上只设置一个轴向竖立片,或者设置一个轴向竖立片和一个纵向竖立片的方式也是可行的方案。而不论采用何种方式,至少设置一个沿轴向方向延伸布置的轴向竖立片才可以实现上述技术效果。
另外,所述限位止挡器还包括可以插接到所述轴向竖立片(12、12a)上的缓冲软垫块4。所述缓冲软垫块4采用软橡胶或类似物制造。如图6所示,从俯视方向看,所述缓冲软垫块4大致呈梯形从而具有宽端部40和窄端部41,所述窄端部41的外侧端设置有向左、右两边横向凸出的凸起(411、411a),一对所述凸起(411、411a)的横向宽度小于所述宽端部40的横向宽度。这样,在所述凸起(411、411a)与所述宽端部40之间形成收窄过渡部412。
而在所述缓冲软垫块4上还设置有一对与所述轴向竖立片(12、12a)适配的插接槽42。所述缓冲软垫块4通过所述插接槽42插接在所述轴向竖立片(12、12a)上并把所述窄端部41朝所述中轨2和内轨3方向布置。从侧视方向看,所述缓冲软垫块4的高度大于或等于所述轴向竖立片(12、12a)的竖立高度但安装所述内轨后矮于所述内轨3的槽底壁32。这样,所述缓冲软垫块4基本上能够完全包裹所述轴向竖立片(12、12a),避免所述中轨2和内轨3直接冲击在所述轴向竖立片(12、12a)上而对所述轴向竖立片(12、12a)造成过大的损坏,还能够减缓所述中轨2和内轨3向内侧端方向滑行时对所述轴向竖立片(12、12a)的冲击力,并能够降低所述中轨2和内轨3撞击在所述轴向竖立片(12、12a)上产生的噪音量。而且所述缓冲软垫块4并不高出于所述内轨3的槽底壁32因此也不会阻碍到所述家具抽拉型活动部件的安装。
当所述中轨2和内轨3撞击到所述限位止挡器上,所述中轨2和内轨3同时也会承受所述限位止挡器给予的反向作用力,为了防止所述中轨2和内轨3因反弹力而向外侧端滑行,下面对所述中轨2和内轨3的结构再做进一步的改进。
首先,先对所述中轨2的结构进行改进。如图8和图9所示,在所述中轨2内侧端2a的槽底壁21上设置有呈U型的中轨叉口槽22,所述中轨叉口槽22的内侧端在横向方向上稍微相对收窄从而呈束口状,也就在所述中轨叉口槽22的内侧端形成相对收窄的内侧槽口221。在所述中轨叉口槽22的外侧端的两侧分别设置与所述凸起(411、411a)适配的凹坑220,这样,所述中轨叉口槽22具有与所述缓冲软垫块4的窄端部41大体上一致的形状和配合尺寸,所述中轨叉口槽22与所述窄端部41是适配的。
当向内侧端推进所述中轨2并让所述中轨叉口槽22插接到所述缓冲软垫块4上,所述中轨叉口槽22的外侧槽口221咬合在所述缓冲软垫块4的收窄过渡部412上,此时所述中轨叉口槽22的外侧槽口221实际上已经被卡在所述缓冲软垫块4的左、右凸起(411、411a)与所述宽端部40之间的收窄过渡部412上,从而所述中轨叉口槽22含着所述缓冲软垫块4的窄端部41。这样,借助所述中轨叉口槽22与所述缓冲软垫块4的窄端部41的配合能够对插接到所述缓冲软垫块4上的中轨2进行定位,防止所述中轨2碰撞到所述缓冲软垫块4上后受所述缓冲软垫块4给予的反作用冲击力的影响而反弹向外侧端方向滑行。为此,所述含着的含义,主要是指所述中轨2能够以一定的结合力结合在所述缓冲软垫块4上但需要在施加再大一点的外力时才能脱离所述缓冲软垫块4。
然后,对所述内轨3也作出结构改进,具体技术方案如图7所示,所述内轨3内侧端的槽侧壁30在横向方向上稍微相对收窄从而呈束口状从而所述内轨3的内侧端的宽度稍微小于所述宽端部40的宽度,所述内轨3的内侧端适配于所述缓冲软垫块4的宽端部40, 当推进所述内轨3让所述内轨3插接到所述缓冲软垫块4上时,所述内轨3内侧端的槽侧壁也能够含着所述缓冲软垫块4的宽端部40。必须说明的是图7所示的所述内轨3的槽侧壁30相对于图4所示的所述内轨3的槽侧壁30稍微向内收缩,是因为图7所示的所述内轨3的槽侧壁30是内侧端部位置的剖面图,而图4所示的所述内轨3的槽侧壁30不是内侧端位置的剖面图。
根据上述技术方案,所述内轨3内侧端与所述缓冲软垫块4的宽端部40之间采用的配合结构与所述中轨2内侧端与所述缓冲软垫块4的窄端部41之间采用的配合结构是类似的,也取得了类似的效果。当推进所述内轨3让所述内轨3插接到所述缓冲软垫块4上时,所述内轨3内侧端的槽侧壁能够含着所述缓冲软垫块4的宽端部40,借助所述内轨3内侧端与所述缓冲软垫块4的宽端部40的配合能够起到到位所述内轨3,防止所述内轨3碰撞到所述缓冲软垫块4上后受所述缓冲软垫块4给予的反冲击力的影响而反弹向外侧端方向滑行。
在所述中轨2与所述内轨3之间设置有能够防止所述内轨3拉出时意外脱离所述中轨2的滑轨防脱装置,所述滑轨防脱装置包括底座7和与所述底座7配合的弹扣叶片5,其中所述底座7安装在所述中轨2上而所述弹扣叶片5安装在所述内轨3上。下面结合附图2以及图10至图19对所述底座7和所述弹扣叶片5的具体结构作介绍:
如图10、图11和图12所示,所述底座7包括基板71及站立对称设置在所述基板71正向面方向上的一对竖立块即左竖立块72和右竖立块73,所述左竖立块72和右竖立块73是设置在所述基板71上的呈凸起状的构造体,在所述左竖立块72和右竖立块73之间是间隔设置的,为此在它们之间形成有避让空间70;在所述左竖立块72和右竖立块73的外侧端还设置导向斜坡(720、730),从而便利于导入到所述内轨3内;在所述底座7的外侧端部还设置有防撞弹性臂700,从而在所述内轨3完全收回时所述内轨3的外侧端的所述向下折弯边31能够弹性顶压在所述防撞弹性臂700上。另外,所述左竖立块72和右竖立块73沿轴向方向延伸布置因此在轴向方向上具有一定的延伸长度。需要特别说明的是,所述轴向是安装有所述底座7的中轨2的延伸方向,或者说是所述中轨2的滑动方向,当把所述底座7安装到所述中轨2上后,所述竖立块的延伸方向与所述中轨2的延伸方向一致。
所述底座7还包括对称设置在所述基板71正向面方向上一对固定翼部,即所述左固定翼部74和右固定翼部75。所述左固定翼部74和右固定翼部75位于所述基板71的左、右两侧边上并且也是间隔设置的,而所述左竖立块72和右竖立块73位于所述左固定翼部74和右固定翼部75之间的间隔空间内。另外,所述底座7还包括设置在所述基板71反向面上一对固定脚部,即所述左固定脚部76和右固定脚部77。
至于所述弹扣叶片5可以采用多种的实施方式,下面提出优选的四种实施方式。所述弹扣叶片5的第一种实施方式如下:
如图13、图14、图15和图16所示,所述弹扣叶片5大致呈板状具有板状基体50,所述板状基体50具有基准正向面5a和与所述正向面5a相反的基准反向面5b,所述板状基体50包括设置有连接孔590的头端部59和从所述头端部59的两边分别引出的两条支臂即左侧臂51和右侧臂52,所述左侧臂51和右侧臂52大致同向地向尾端方向延伸并在尾端57连接在一起从而在所述弹扣叶片5的中央区域形成中央空缺591。
其中,所述基准面是指所述弹扣叶片5的正反两面(5a、5b)中用于确定基准的定位面,它是正反两面中具有最大面积的平坦表面所在的面,就如平坦地表面与突兀升起的高山之间的关系,显然本发明采用的基准面就类似是平坦的地面。为此所述基准面可以是一个确定的平坦面,也可以是一个拟定的设计面。
其中,所述连接孔590是用于借助于铆钉类的连接装置将所述弹扣叶片5定位到所述内轨3上的定位机构。在对所述内轨3施加轴向推力或拉力时,所述轴向力通过铆钉等传 递到所述弹扣叶片5的头端部59上,所述头端部59成为所述弹扣叶片5的第一受力点。
其中,所述弹扣叶片5的所述板状基体50还包括分别位于所述头端部59的两边并大致同向地从所述弹扣叶片5的头端部59向尾端方向延伸的左侧臂51和右侧臂52,所述左侧臂51和右侧臂52在尾端连接在一起从而在所述弹扣叶片5的中央区域形成中央空缺591。首先定义了所述左侧臂51和右侧臂52就像圆规的两条腿一样从所述头端部59的两边延伸出的结构,但所述左侧臂51和右侧臂52在尾端部57又连接在一起从而让所述左侧臂51和右侧臂52形成了一个整体结构的所述弹性叶片,所述头端部59的连接孔590的轴向中轴线位于所述左侧臂51和右侧臂52之间;其次,定义了所述中央空缺591的两边臂体就是所述左侧臂51和右侧臂52,所述中央空缺591为所述左侧臂51和右侧臂52向中间偏移提供了避让空间,因此,在向所述左侧臂51和右侧臂52施加相对的收紧力时,所述左侧臂51和右侧臂52能够借助所述中央空缺591相对靠近并同时使设置其上的构造体,例如下面将论述到的正向左凸块533和正向右凸块543也相对靠近。
在所述左侧臂51上设置有凸出于所述板状基体50的基准正向面5a的正向左凸块533,所述正向左凸块533包括有沿轴向方向布置的左竖向凸边531和与所述左竖向凸边531呈角度布置的左横向凸边530,所述左竖向凸边531与所述左横向凸边530之间的夹角形成L型的左倒钩53。所述左倒钩53设置在所述左侧臂51的大致中段部位。所述左倒钩53所在的空缺区域在正反方向上并不贯穿整个所述弹扣叶片5的所述板状基体50,所述左倒钩53在反向面侧还具有底壁体534,所述底壁体534也是所述板状基体50的部分壁体。实际上,所述左竖向凸边53就是所述左倒钩53的左竖向边,而所述左横向凸边530就是所述左倒钩53的左横向边。另外,所述左倒钩53的L型左转角小于等于90°并且朝向左边和尾端方向,这样所述左竖立块72卡入到所述左倒钩53内时,所述左竖立块72既可以从左边空位离开所述左倒钩53,或者说所述左竖立块72可以从所述左倒钩53左边滑入,也可以沿从尾端向首端的轴向方向移动进入所述左倒钩53或以相反方向退出。
同样地,在所述右侧臂52上设置有凸出于所述板状基体50的基准正向面5a的正向右凸块543,所述正向右凸块543包括有沿轴向方向布置的右竖向凸边541和与所述右竖向凸边541呈角度布置的右横向凸边540,所述右竖向凸边541与所述右横向凸边540之间的夹角形成L型的右倒钩54。所述右倒钩54设置在所述右侧臂52的大致中段部位。所述右倒钩54所在的空缺区域在正反方向上并不贯穿整个所述弹扣叶片5所在板状基体50,所述右倒钩54在反向面侧还具有底壁体544。实际上,所述右竖向凸边541的右侧边成为所述右倒钩54的左竖向边,而所述右横向凸边540的下侧边成为所述右倒钩54的左横向边。另外,所述右倒钩54的L型右转角小于等于90°并且朝向右边和尾端方向,这样卡入到所述右倒钩54内所述右竖立块73既可以从右边空位离开所述右倒钩54,也可以沿从尾端向首端的轴向方向移动进入所述右倒钩54。所述左倒钩53与所述右倒钩54左、右对称布置并且对称的中轴线与所述连接孔590的轴向中轴线重叠。
进一步的技术方案是,在所述弹扣叶片5的头端部59与所述左横向凸边530之间连接臂体外侧还设置有小凹坑513,从而提高该段臂体的桡性;同样在所述弹扣叶片5的头端部59与所述右横向凸边540之间连接臂体外侧还设置有小凹坑523。
进一步的技术方案是,在所述弹扣叶片5的头端部59与所述左横向凸边530之间的正向面5a方向上设置有沿所述左侧臂51延伸并平滑抬升的正向左斜坡面511,所述正向左斜坡面511一端连贯在所述弹扣叶片5的头端部59上,另一端连贯在所述左横向凸边530的正向顶端沿;在所述弹扣叶片5的头端部59与所述右横向凸边540之间的正向面5a方向上设置有沿所述右侧臂52延伸并平滑抬升的正向右斜坡面521,所述正向右斜坡面521一端连贯在所述弹扣叶片5的头端部59上,另一端连贯在所述右横向凸边540的正向顶端沿。其中,所述正向左斜坡面511或所述正向右斜坡面521,主要是能够提升所述左倒钩53或右倒钩54到所述弹扣叶片5的头端部59之间线段臂体的结构强度,又能 让所述左横向凸边530及所述右横向凸边540不至于突兀地凸出而被容易撞击破坏,所述正向斜坡面(511、521)类似于河堤的护堤坡。
进一步的技术方案是,如图13所示,在所述左横向凸边530、所述右横向凸边540的外侧顶端沿位置分别设置有导向倒角(532、542)。这样在装配所述弹扣叶片5时容易导入所述底座7上的左竖立块72和右竖立块73。其中,所述导向倒角(532、542)不是指制造所述弹扣叶片5时在模具上必须使用的工艺过渡圆角,而是比该工艺过渡圆角的转弯半径要大一些的过渡圆角。
如图2所示为所述滑轨防脱装置处于安装到所述家具导轨100上的安装状态的示意图。其中,所述底座7布局在所述中轨2的U型槽内。在所述中轨2的靠外端端部的U型槽的槽底壁上设置有一对安装孔,所述底座7的一对所述固定脚部(76、77)卡接在所述安装孔内,而所述底座7的一对所述固定翼部(74、75)分别顶靠在所述中轨2的一对槽侧壁20上。这样,所述底座7固连在所述中轨2U型槽内并让所述底座7上设置的左竖立块72和右竖立块73位于所述中轨2的轴向方向。另外,通过连接钉穿过所述弹扣叶片5头端部59的连接孔590将所述弹扣叶片5固连在所述内轨3的U型槽的槽底壁32上,让所述弹扣叶片5的反向面5b贴合在所述内轨3U型槽的槽底壁上并让所述弹扣叶片5的两条支臂向所述内轨3的外侧端方向延伸,所述弹扣叶片5的头端部59朝向所述内轨3的内侧端。
对所述内轨3施加向外侧端方向的轴向拉力或推力使所述弹扣叶片5沿轴向配合在所述底座7上后,消除所述轴向力使所述弹扣叶片5处于自由状态,所述弹扣叶片5的左竖向凸边531和右竖向凸边541能够被分别限定在所述底座7的左竖立块72和右竖立块73之间的避让空间70内,而所述左横向凸边530和右横向凸边540能够同时顶靠在所述底座7的左竖立块72和右竖立块73的前端沿上,所述底壁体(534、544)分别覆盖在所述左竖立块72、右竖立块73上。此后继续给所述内轨3施加向外侧端方向的轴向拉力,所述轴向拉力通过所述弹扣叶片5的头端部59及所述左侧臂51和右侧臂52传递给所述左倒钩53、右倒钩54并被所述底座7上的左竖立块72和右竖立块73反向阻挡,此时由于所述弹扣叶片5的头端部59的中轴线位于所述左侧臂51和右侧臂52之间,为此所述轴向力会使所述左侧臂51和右侧臂52同时向外侧横向偏移,从而所述左竖立块72、右竖立块73也分别紧紧地贴在所述左倒钩53、右倒钩54上,让所述弹扣叶片5不能脱离所述底座7。
而当需要把所述内轨3从所述中轨2上拆卸下来时,用力掰动所述弹扣叶片5的所述左侧臂51和右侧臂52向中间靠拢,能够让所述左侧臂51和右侧臂52分别离开所述左倒钩53或右倒钩54从而让所述弹扣叶片5与所述底座7之间脱扣,此时向外侧端方向拉动所述内轨3,所述弹扣叶片5的正向左凸块533和正向右凸块543即穿过所述左竖立块72和右竖立块73之间的避让空间70而最终把所述内轨3从所述中轨2上拆卸下来。
把所述弹扣叶片5及所述内轨3拆卸下来后,后续还要把所述弹扣叶片5及所述内轨3重新安装到所述家具导轨100上,鉴于此,为了能够便捷地把所述弹扣叶片5及所述内轨3安装到所述家具导轨100上,下面进一步对所述弹扣叶片5的结构进行改进。
如图13和图16所示,在所述弹扣叶片5的头端部59与所述左横向凸边530之间设置有沿所述左侧臂51延伸的用于引导所述左竖立块72平滑滑入的左侧向引导斜坡面510,所述左侧向引导斜坡面510一端连贯在所述弹扣叶片5的头端部59上,另一端连贯在所述左横向凸边530的外侧顶端沿;在所述弹扣叶片5的头端部59与所述右横向凸边540之间设置有沿所述右侧臂52延伸的用于引导所述右竖立块73平滑滑入的右侧向引导斜坡面520,所述右侧向引导斜坡面520一端连贯在所述弹扣叶片5的头端部59上,另一端连贯在所述右横向凸边540的外侧顶端沿。这样当从所述中轨2的外侧端插接安装所述内轨3到所述中轨2上时,起初所述左侧臂51的前端被所述底座7的左竖立块72 顶压稍微变形,所述底座7上的左竖立块72能够沿所述左侧向引导斜坡面510滑动随后滑入进入到所述左倒钩53中,同理,所述右侧向引导斜坡面520也具有相应的功能和结构。
进一步的,所述左侧臂51、右侧臂52分别呈中间宽而头尾两端收窄的形状。所述左侧臂51、右侧臂52的头尾两端的最小横截面积是中段部位的最大横截面的10%到40%。这样,让所述左侧臂51、右侧臂52分别呈中间宽的形状,能够增大中部位置的结构强度,从而让设置在中部位置的所述左倒钩53与所述右倒钩54的结构强度也大大提高;而让所述左侧臂51、右侧臂52分别呈头尾两端收窄的形状,能够容易让所述左侧臂51、右侧臂52变形从而易于装配和拆卸所述弹扣叶片5及所述内轨3。
而由于所述左侧臂51、右侧臂52的头尾两端收窄,因此,所述左侧臂51、右侧臂52的头尾两端的结构强度相对薄弱而容易折弯变形而损坏。鉴于此,进一步提出以下的解决方案:
如图2、图14、图15、和图17所示,在所述弹扣叶片5的所述左侧臂51上设置有凸出于基准反向面5b的反向左凸块55,在所述右侧臂52上设置有凸出于基准反向面5b的反向右凸块56。在所述内轨3的U型槽的槽底壁32上还设置有能够接纳所述反向左凸块55的左接纳孔34a,所述反向左凸块55伸入到所述左接纳孔34a内,所述反向左凸块55的横向宽度L7小于所述左接纳孔34a的横向宽度L6,所述反向左凸块55的前端550顶靠在所述左接纳孔34a的孔壁上;在所述内轨3的U型槽的槽底壁32上还设置有能够接纳所述反向右凸块56的右接纳孔34,所述反向右凸块56伸入到所述右接纳孔34内,所述反向右凸块56的横向宽度L4小于所述右接纳孔34的横向宽度L5,所述反向右凸块56的前端560顶靠在所述右接纳孔34的孔壁上。
这样能够借助于所述反向左凸块55、反向右凸块56以及与它们配合的设置在所述内轨3上的左接纳孔34a和右接纳孔34,进一步分解所述底座7上的左竖立块72和右竖立块73反向施加给所述左侧臂51和右侧臂52的反向作用力,或者说,向外拉动所述内轨3时产生的拉力,通过所述弹扣叶片5的头端部59、所述反向左凸块55及反向右凸块56三者均匀地向所述弹扣叶片5的左侧臂51、右侧臂52传递即向外拉动所述内轨3的拉力被所述弹扣叶片5的头端部59和所述反向左凸块55、反向右凸块56三者分担,从而大大降低了拉动所述内轨3的拉力对所述弹扣叶片5的挤压破坏作用。在该方案中,最好的方案是将所述反向左凸块55、反向右凸块56对应地设置在所述左倒钩53、所述右倒钩54的背面,让所述弹扣叶片5的左侧臂51、右侧臂52所受到的正、反两个方向的力矩具有最短的力臂长度,从而更加让所述弹扣叶片5的左侧臂51、右侧臂52不易受到损坏。
进一步的,在所述弹扣叶片5的尾端部57设置有凸出于基准正向面5a的尾端凸起58。这样能够大大提高所述尾端部位57的结构强度,不仅便于制造出模而且也能够提高所述弹扣叶片5的结构强度。
如图18所示是所述弹扣叶片5′的第二种实施方式的结构示意图:
采用第二种实施方式的弹扣叶片5′与采用第一种实施方式的弹扣叶片5相比,具有类似的结构,主要区别点是所述弹扣叶片5上没有设置所述正向左凸块533、正向右凸块543从而涉及所述左倒钩和所述右倒钩的形成结构的改变。如图18所示,在所述弹扣叶片5′的所述左侧臂51′上设置有沿轴向方向布置的左竖向边531′和与所述左竖向边531′呈角度布置的左横向边530′,所述左竖向边531′与所述左横向边530′之间的夹角形成所述左倒钩53′,所述左倒钩53′所在的空缺区域在正反方向上贯穿整个所述弹扣叶片5′。另外,在所述弹扣叶片5′的所述右侧臂52′上设置有沿轴向方向布置的右竖向边541′和与所述右竖向边541′呈角度布置的右横向边540′,所述右竖向边541′与所述右横向边540′之间的夹角形成所述右倒钩54′,所述右倒钩54′所在的空缺区域在正反方向上贯穿整个所述弹扣叶片5′。
进一步的技术方案是,在所述左横向边530′、所述右横向边540′的外侧顶端沿位置也 分别设置有导向倒角(532′、542′)。这样在装配所述弹扣叶片5′容易导入所述底座7上的左竖立块72和右竖立块73。
如图19所示是所述弹扣叶片5"的第三种实施方式的结构示意图:在所述第一种实施方式的弹扣叶片5的基础上作进一步的改进,如图19所示,在所述弹扣叶片5"上没有设置所述反向左凸块55及所述反向右凸块56,在所述左侧臂51"的外侧缘的中部位置设置有朝外的左缺口512",在所述右侧臂52"的外侧缘的中部位置设置有朝外的右缺口522"。优选地,把所述左缺口512"和右缺口522"设置在所述左倒钩53"与所述右倒钩54"所在空缺区域的底壁体(534、544)上贯穿所述板状基体50"。这样通过所述左缺口512"和右缺口522"的设置调整所述左侧臂51"和右侧臂52"的强度,使其具有合适的弹性而便于人手施力掰动所述弹扣叶片5"的所述左侧臂51"和右侧臂52"向中间靠拢,从而便于把所述弹扣叶片5"拆卸下来。
当然还可以采用第四种实施方式就是把所述倒钩所在的空缺区域在正反方向上贯穿所述弹扣叶片5所在的整个所述板状基体50。
在上述四种实施方式中,第一种实施方式更为之优秀,原因是所述左倒钩53和所述右倒钩54的构造能够在不增加所述左侧臂51、右侧臂52的横向宽度的情况下让所述倒钩(53、54)位于所述弹扣叶片5的正向面方向,大大提高了所述左侧臂51、右侧臂52的结构强度,其中所述倒钩(53、54)本身也都能够增强所述左侧臂51、右侧臂52的结构强度。

Claims (24)

  1. 滑轨防脱装置,包括底座和与所述底座配合的弹扣叶片;其特征在于:
    (a)所述底座包括基板及站立设置在所述基板上的一对竖立块即左竖立块和右竖立块,所述左竖立块和右竖立块沿轴向方向延伸布置并且所述左竖立块和右竖立块之间设置有避让空间;
    (b)所述弹扣叶片大致呈板状具有基准正向面和与所述正向面相反的基准反向面,包括设置有连接孔的头端部和从所述头端部的两边分别引出的两条支臂即左侧臂和右侧臂,所述左侧臂和右侧臂大致同向地向尾端方向延伸并在尾端连接在一起从而在所述弹扣叶片的中央区域形成中央空缺;
    (c)在所述弹扣叶片的所述左侧臂上设置有L型的左倒钩,所述左倒钩包括沿轴向方向布置的左竖向边和与所述左竖向边呈角度布置的左横向边,所述左倒钩的L型左转角小于等于90°并且朝向左边和尾端方向;在所述右侧臂上设置有L型的右倒钩,所述右倒钩包括沿轴向方向布置的右竖向边和与所述右竖向边呈角度布置的右横向边,所述右倒钩的L型右转角小于等于90°并且朝向右边和尾端方向;
    (d)当所述弹扣叶片处于自由状态并沿轴向配合在所述底座上时,所述弹扣叶片的左竖向边和右竖向边能够被分别限定在所述底座的左竖立块和右竖立块之间的避让空间内,而所述左横向边和右横向边能够同时顶靠在所述底座的左竖立块和右竖立块的前端沿上。
  2. 根据权利要求1所述的滑轨防脱装置,其特征在于:所述左倒钩设置在所述左侧臂的大致中段部位,所述右倒钩设置在所述右侧臂的大致中段部位。
  3. 根据权利要求1所述的滑轨防脱装置,其特征在于:所述弹扣叶片的所述左倒钩与所述右倒钩左、右对称布置。
  4. 根据权利要求1所述的滑轨防脱装置,其特征在于:所述左侧臂、右侧臂分别呈中间宽而头尾两端收窄的形状。
  5. 根据权利要求4所述的滑轨防脱装置,其特征在于:所述左侧臂、右侧臂的头尾两端的最小横截面积是中段部位的最大横截面的10%到40%。
  6. 根据权利要求1所述的滑轨防脱装置,其特征在于:在所述弹扣叶片的所述左侧臂上设置有凸出于反向面的反向左凸块,在所述右侧臂上设置有凸出于反向面的反向右凸块。
  7. 根据权利要求1所述的滑轨防脱装置,其特征在于:在所述左横向边、所述右横向边的外侧顶端沿位置分别设置有导向倒角。
  8. 根据权利要求1所述的滑轨防脱装置,其特征在于:在所述弹扣叶片的尾端部设置有凸出于所述基准正向面的尾端凸起。
  9. 根据权利要求1到8任一所述的滑轨防脱装置,其特征在于:在所述弹扣叶片的所述左侧臂上设置有凸出于所述基准正向面的正向左凸块,所述左倒钩形成在所述正向左凸块上从而所述正向左凸块包括有沿轴向方向布置的左竖向凸边和与所述左竖向凸边呈角度布置的左横向凸边,所述左竖向凸边与所述左横向凸边之间的夹角形成所述左倒钩;在所述右侧臂上设置有凸出于所述基准正向面的正向右凸块,所述右倒钩形成在所述正向右凸块上从而所述正向右凸块包括有沿轴向方向布置的右竖向凸边和与所述右竖向凸边呈角度布置的右横向凸边,所述右竖向凸边与所述右横向凸边之间的夹角形成所述右倒钩。
  10. 根据权利要求9所述的滑轨防脱装置,其特征在于:在所述弹扣叶片的头端部与所述左横向凸边之间设置有沿所述左侧臂延伸的用于引导所述左竖立块平滑滑入的左侧向引导斜坡面,所述左侧向引导斜坡面一端连贯在所述弹扣叶片的头端部上,另一端连贯 在所述左横向凸边的外侧顶端沿;在所述弹扣叶片的头端部与所述右横向凸边之间设置有沿所述右侧臂延伸的用于引导所述右竖立块平滑滑入的右侧向引导斜坡面,所述右侧向引导斜坡面一端连贯在所述弹扣叶片的头端部上,另一端连贯在所述右横向凸边的外侧顶端沿。
  11. 根据权利要求10所述的滑轨防脱装置,其特征在于:在所述弹扣叶片的头端部与所述左横向凸边之间的正向面方向上设置有沿所述左侧臂延伸并平滑抬升的正向左斜坡面,所述正向左斜坡面一端连贯在所述弹扣叶片的头端部上,另一端连贯在所述左横向凸边的正向顶端沿;在所述弹扣叶片的头端部与所述右横向凸边之间的正向面方向上设置有沿所述右侧臂延伸并平滑抬升的正向右斜坡面,所述正向右斜坡面一端连贯在所述弹扣叶片的头端部上,另一端连贯在所述右横向凸边的正向顶端沿。
  12. 根据权利要求9所述的滑轨防脱装置,其特征在于:所述左倒钩和所述右倒钩所在空缺区域在正反方向上并不贯穿整个所述弹扣叶片的板状基体而具有底壁体,在所述左倒钩、所述右倒钩所在空缺区域的所述底壁体上分别设置有贯穿所述板状基体并朝外的左空缺、右空缺。
  13. 应用权利要求1到12任一所述滑轨防脱装置的家具滑轨,所述家具滑轨包括大致呈U型槽状的中轨及内轨,所述中轨与内轨的槽口朝向相反并且所述内轨轴向滑动布置在所述中轨的U型槽内;其特征在于:在所述中轨的靠外端端部的U型槽内布置所述底座,所述底座固连在所述中轨U型槽的槽底壁上并让所述底座上设置的左竖立块和右竖立块位于所述内轨的轴向方向;通过连接钉穿过所述弹扣叶片头端部的连接孔将所述弹扣叶片固连在所述内轨的U型槽的槽底壁上,让所述弹扣叶片的反向面贴合在所述内轨U型槽的槽底壁上并让所述弹扣叶片的两条支臂向所述内轨的外侧端方向延伸。
  14. 根据权利要求13所述的家具滑轨,其特征在于:在所述内轨U型槽的槽底壁上还设置有能够接纳所述反向左凸块的左接纳孔,所述反向左凸块伸入到所述左接纳孔内,所述反向左凸块的横向宽度小于所述左接纳孔的横向宽度,所述反向左凸块的前端顶靠在所述左接纳孔的孔壁上;在所述内轨U型槽的槽底壁上还设置有能够接纳所述反向右凸块的右接纳孔,所述反向右凸块伸入到所述右接纳孔内,所述反向右凸块的横向宽度小于所述右接纳孔的横向宽度,所述反向右凸块的前端顶靠在所述右接纳孔的孔壁上。
  15. 根据权利要求13所述的家具滑轨,其特征在于:还包括大致呈U型槽状的外轨,所述中轨滑动设置在所述外轨的U型槽内并且所述中轨与所述外轨的槽口朝向相同;所述外轨具有槽底壁和槽侧壁,在所述外轨的靠内侧端的U型槽内设置有能够阻止所述中轨滑行的限位止挡器从而能够限定所述中轨在所述外轨上向内侧端方向的滑行行程;所述限位止挡器包括至少一个沿轴向方向延伸布置的轴向竖立片;所述限位止挡器包括缓冲软垫块,所述缓冲软垫块插接在所述轴向竖立片上,所述缓冲软垫块的高度大于或等于所述轴向竖立片的竖立高度但矮于所述内轨的槽底壁。
  16. 根据权利要求15所述的家具滑轨,其特征在于:从俯视方向看,所述缓冲软垫块大致呈梯形从而具有宽端部和窄端部,所述窄端部朝所述中轨和内轨方向布置,所述窄端部的外侧端设置有向左、右两边横向凸出的凸起。
  17. 根据权利要求16所述的家具滑轨,其特征在于:在所述中轨内侧端的槽底壁上设置有呈U型的中轨叉口槽,所述中轨叉口槽的内侧端在横向方向上稍微相对收窄从而呈束口状,所述中轨叉口槽适配于所述缓冲软垫块的窄端部,当推进所述中轨让所述中轨叉口槽插接到所述缓冲软垫块上时,所述中轨叉口槽能够含着所述缓冲软垫块的窄端部。
  18. 根据权利要求16所述的家具滑轨,其特征在于:所述内轨内侧端的槽侧壁在横向方向上稍微相对收窄从而呈束口状,所述内轨的内侧端适配于所述缓冲软垫块的宽端部,当推进所述内轨让所述内轨插接到所述缓冲软垫块上时,所述内轨内侧端的槽侧壁能够含着所述缓冲软垫块的宽端部。
  19. 根据权利要求15所述的家具滑轨,其特征在于:所述外轨的槽侧壁的内侧布置有两条上、下平行排列的第一滚珠槽,所述内轨的槽侧壁的外侧布置有两条上、下平行排列的第四滚珠槽,所述中轨的槽侧壁的外侧布置有适配于所述第一滚珠槽的两条上、下平行排列的所述第二滚珠槽,所述第一滚珠槽与所述第二滚珠槽之间的局部段设置有带骨架的第一滚珠总成;所述中轨的槽侧壁的内侧布置有适配于所述第四滚珠槽的两条上、下平行排列的所述第三滚珠槽,所述第三滚珠槽与所述第四滚珠槽之间的局部段设置有带骨架的第二滚珠总成。
  20. 根据权利要求19所述的家具滑轨,其特征在于:所述带骨架的第一滚珠总成包括呈板状的第一骨架和设置在所述第一骨架上的第一滚珠组,所述第一滚珠组包括第一上排滚珠组和第一下排滚珠组,所述第一上排滚珠组中的滚珠与所述第一下排滚珠组中的滚珠在上、下方向上错位布置。
  21. 根据权利要求20所述的家具滑轨,其特征在于:所述第一上排滚珠组或所述第一下排滚珠组中的其中一排滚珠在所述第一骨架上的前后两端起始位置的滚珠间隔间距小于中段位置的滚珠间隔间距。
  22. 根据权利要求20所述的家具滑轨,其特征在于:在所述第一骨架两侧并对应于所述第一上排滚珠组和第一下排滚珠组的位置分别设置有凸出筋条。
  23. 根据权利要求19所述的家具滑轨,其特征在于:所述带骨架的第二滚珠总成包括呈U型槽状的第二骨架和设置在所述第二骨架的槽侧壁上的第二滚珠组,所述第二滚珠组包括第二上排滚珠组和第二下排滚珠组,所述第二上排滚珠组中的滚珠与所述第二下排滚珠组中的滚珠在上、下方向上错位布置。
  24. 根据权利要求23所述的家具滑轨,其特征在于:所述第二骨架的槽侧壁被分割为间隔布置的小岛,每个所述小岛上设置三个呈三角形布置的滚珠。
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CN112617483B (zh) * 2019-10-09 2024-04-19 川湖科技股份有限公司 滑轨总成及其滑轨套件
TWI826218B (zh) * 2022-12-28 2023-12-11 川湖科技股份有限公司 滑軌總成

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