CN206006551U

CN206006551U - Slide rail anti-drop device and its furniture slide rail that is applied

Info

Publication number: CN206006551U
Application number: CN201620705537.2U
Authority: CN
Inventors: 林旭文
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-12
Filing date: 2016-07-06
Publication date: 2017-03-15
Anticipated expiration: 2026-07-06
Also published as: CN206006555U

Abstract

This utility model is related to a kind of slide rail anti-drop device, including base and the snap-on blade with base engagement；Base includes a pair being provided with the setting block for avoiding space between them；Snap-on blade includes a pair end to end support arms, forms central vacancy between a pair of support arms.L-type barb is provided with every support arm, barb include vertical edges and and widthwise edge, when snap-on blade is in free state and coordinates on base vertically, a pair of vertical edges of snap-on blade can be each defined in the avoidance space between a pair of upstanding block of base, and a pair of widthwise edges can be acted against on the front end edge of setting block of base simultaneously.So, the anticreep stable performance of slide rail anti-drop device, and can purposefully, easily be disassembled by maintainer.

Description

Slide rail anti-drop device and its furniture slide rail that is applied

Technical field

The invention belongs to rail of furniture technical field, and in particular to a kind of slide rail anti-drop device and its furniture that is applied Slide rail.

Background technology

Often there are some slidingtype parts such as drawer, movable mold in furniture by using the drawing of person or ordering about for push operation Make telescopic slide with respect to Furniture Body.And the conventional slip structure between the slidingtype part and the Furniture Body is in institute Setting slide rail on Furniture Body is stated, multiple pulleys are set on the slidingtype part, so by the pulley in the cunning Sliding on rail enables the relatively described Furniture Body of the slidingtype part to make telescopic slide.Such structure is obviously very simple Single, installation, dismounting are also very convenient.But it is found that user is applied to the slidingtype part during routine use Plus pulling force slightly excessive whole slidingtype part such as drawer, movable mold will be pulled out and departed from the Furniture Body and Fall, be scattered on the ground the thing on the slidingtype part, or even the foot of user of running over and injure.

For above-mentioned technical problem, existing solution is setting anti-drop device on the slide rail.Merit attention Be a kind of anti-drop device disclosed by prior art part in Chinese utility model patent 201320361976.2, should The anti-drop device of type is most common for it on furniture, office, and its concrete structure is：Including being arranged on outer guide Card convex portion 15 on 10 end limited blocks and the elastic shift fork 23 being arranged on interior guide rail 20 with 15 bayonet fittings of card convex portion. Wherein described elastic dialing fork 23 is substantially V-shaped including right long elasticity wiper arm and left short elastic wiper arm, in the right long elasticity wiper arm Right side be provided with substantially L-shaped vacancy area.It is provided with the intersection of the right long elasticity wiper arm and left short elastic wiper arm Installation through-hole, mounting screw are fixed to the head end of the elastic shift fork 23 on the interior guide rail 20 by the installation through-hole, In the mounted state, the tail end of the right long elasticity wiper arm is extended to outside the interior guide rail 20.

When the interior guide rail 20 is pulled out, the elastic shift fork 23 is outwards slided with the interior guide rail 20, when described When the bottom top pressure in right long elasticity wiper arm vacancy area is in the card convex portion 15, the right long elasticity wiper arm is with the mounting screw It is in the upright side walls that axle first right side rotation abuts against the interior guide rail 20, so as to block the logical of the advance of card convex portion 15 Road and hinder the interior guide rail 20 to depart from the outer guide 10 and slide outward, and then prevent on the interior guide rail 20 Slidingtype part departs from the Furniture Body and drops.When needing to detach the slidingtype part and convenient to the slidingtype portion When part or slide rail are keeped in repair, the tail end that can stir the right long elasticity wiper arm to the left makes the right long elasticity wiper arm and institute State passage is avoided so as to allowing the card convex portion 15 to pass through.And after external force is eliminated, described Left short elastic wiper arm can be ordered about the right long elasticity wiper arm and be resetted.

Content of the invention

The anti-drop device that prior art part in the first patent 201320361976.2 discloses is used Monolateral top pressure anticreep and another side are formed shrinks the structure for avoiding space, and the anticreep unstable properties of this structure, slide rail are being stretched During contracting is slided, when right long elasticity wiper arm described in accident collision make its deflect to the left and in the right long elasticity wiper arm and institute State and formed between the upright side walls of interior guide rail when can allow passage that the card convex portion passes through, the elastic shift fork also just loses anti- De- function.

The interior guide rail surprisingly comes off in other words conj.or perhaps how to be effectively prevented the slidingtype part, while can also It is easy to the assembly and disassembly of slide rail to be always the technical problem that research staff puts forth effort to solve, and one of solution is described The setting of slide rail anti-drop device.The present invention is namely improved to the structure of the slide rail anti-drop device emphatically so as to had Stable anticreep performance, and can purposefully, easily be disassembled by maintainer.

In consideration of it, the present invention proposes a kind of slide rail anti-drop device, including base and the snap-on blade with the base engagement； It is characterized in that：

（a）The base includes that the i.e. left setting block of substrate and standing setting a pair of upstanding block on the substrate and the right side are perpendicular Vertical block, the left setting block and right setting block are in axial direction disposed to extend and set between the left setting block and right setting block It is equipped with avoidance space；

（b）The snap-on blade is substantially plate-like anti-with benchmark forward direction face and the benchmark contrary with benchmark forward direction face To face, including the cephalic par for being provided with connecting hole and the two support arms i.e. left side arm that draws from the both sides of the cephalic par respectively and Substantially caudad direction extends and links together so as to described in tail end in the same direction for right arm, the left side arm and right arm The middle section of snap-on blade forms central vacancy；

（c）The left barb of L-type is provided with the left side arm of the snap-on blade, and the left barb is included vertically The left vertical edges of direction arrangement and the left widthwise edge being arranged at an angle with the left vertical edges, the L-type left-hand rotation angle of the left barb Less than or equal to 90 ° and towards the left side and tail end direction；The right barb of L-type, the right barb is provided with the right arm The right widthwise edge being arranged at an angle including the right vertical edges in axial direction arranged and with the right vertical edges, the right barb L-type right turn angle is less than or equal to 90 ° and towards the right and tail end direction；

（d）When the snap-on blade is in free state and coordinates on the base vertically, the snap-on blade Left vertical edges and right vertical edges can be each defined in avoidance between the left setting block of the base and right setting block empty In, and the left widthwise edge and right widthwise edge can act against the front end of the left setting block and right setting block of the base simultaneously Along upper.

Features described above（a）Define the population structure of the base.Wherein, it is the base to first define the substrate Main part, can erect described in a pair block provide positioning support；Secondly, the left setting block and right setting block are also defined The convex tectosome being provided on the substrate is so as to standing（With respect to lofty）Arrange on the substrate.And The left setting block and right setting block are in axial direction disposed to extend and are provided between the left setting block and right setting block The feature for avoiding space defines the structure for erectting block first, and the left setting block and right setting block have in the axial direction Certain development length；Then define described left setting block and right setting block between be spaced, be this at them it Between be formed with avoidance space.It should be strongly noted that the axial direction is the bearing of trend of the slide rail for being provided with the base, or It is the glide direction of the slide rail that person says, when after on the floor installation to the slide rail, the bearing of trend for erectting block Consistent with the bearing of trend of the slide rail.

Features described above（b）Define the population structure of the snap-on blade.

Wherein, the snap-on blade substantially plate-like with benchmark forward direction face and with the contrary benchmark in benchmark forward direction face Reverse face, defines the snap-on blade general shape for tabular so as to panel-shaped base body, but is not to say that, the snap-on leaf The benchmark forward direction face of the panel-shaped base body of piece or the reverse face of benchmark must be completely parallel two outer surfaces.The reference plane is referred to It is used for the locating surface for determining benchmark in the tow sides of the snap-on blade, it is that there is in tow sides the flat of maximum area The face that surface is located, as relation flatly between the high mountain of surface and lofty rise, it is clear that the reference plane of present invention definition Just similar is flat ground.For reference plane this described can be one determination tabular surface, or one draft set Meter face.

Wherein, the cephalic par of connecting hole is provided with, and defining the snap-on blade includes cephalic par, on the cephalic par It is provided with connecting hole；The connecting hole is for the snap-on blade is navigated to slide rail example by means of the attachment means of rivet class Such as the detent mechanism on interior rail.When axial thrust or pulling force is applied to the interior rail, the axial force is by the transmission such as rivet To on the cephalic par of the snap-on blade, the cephalic par becomes the first stress point of the snap-on blade.

Wherein, the snap-on blade also includes being located at the both sides of the cephalic par respectively and substantially in the same direction from the snap-on The cephalic par of the blade left side arm that caudad direction extends and right arm, the left side arm and right arm link together in tail end So as to form central vacancy in the middle section of the snap-on blade.The left side arm and right arm are first defined just as compasses The structure extended of the same both sides from the cephalic par of two legs, but the left side arm and right arm be connected to again in tail end Together so as to allowing the left side arm and right arm to define an integrally-built spring leaf, the connection of the cephalic par The axis in hole is located between the left side arm and right arm；Secondly, the both sides arm body for defining the central vacancy is exactly institute Left side arm and right arm is stated, the central vacancy is that the left side arm and right arm provide avoidance space to middle skew, because This, when relative tightening force is applied to the left side arm and right arm, the left side arm and right arm can be by described Centre vacancy is relatively close and makes the left raised and right projection being arranged on also relatively close simultaneously.

The feature（c）Define the population structure of the left barb or right barb.

Wherein, the described left barb or right barb of L-type, defined first is a kind of function that can be realized and hooking, secondly Define a kind of shape or structure that can realize hooking function；And the L-type left-hand rotation angle of the left barb is towards the left side and tail end Direction, defines left barb corner direction spatially, both towards the left side and towards tail end direction, so snaps in wherein Described left setting block both can leave the left barb from left side room, it is also possible to along from tail end to the axial direction of head end move Move and enter the left barb.The right barb is towards the right and tail end direction, and same implication.

The feature（d）Define the matching relationship of the left barb or right barb and the base.

Wherein, the left vertical edges and right vertical edges of the snap-on blade can be each defined in the left setting of the base In avoidance space between block and right setting block, define in the free state for not applying the external force impact snap-on blade Under, the spacing between the left vertical edges and right vertical edges is little plus the transverse gage of the left vertical edges and right vertical edges itself In the transverse width in the avoidance space, the left setting block or right setting block of so described base can be snapped into described respectively In left barb or right barb.

According to above-mentioned technical proposal, but after the slide rail anti-drop device is installed on the slide rail, due to the snap-on Blade connects and the middle shape with the central vacancy in two ends on the whole, when the left setting block on the base or the right side When setting block is snapped in the left barb or right barb respectively, the left side arm and the right side of the snap-on blade is firmly moved Side arm to centre draw close when, the left side arm and right arm can be allowed described so as to allow respectively away from the left barb or right barb Thread off between snap-on blade and the base；In addition, when described left setting block or right setting block can be snapped into respectively described When in left barb or right barb, if the axial tension to the interior rail applying in outward direction, the pulling force passes through the snap-on The cephalic par of blade and the left side arm and right arm pass to the left barb, right barb by the left setting on the base Block and right setting block reversely stop, now as the axis of the cephalic par of the snap-on blade is located at the left side arm and right side Between arm, it is that this pulling force can make the left side arm and right arm while lateral shift laterally, so as to the left barb, the right side are fallen Hook is also tightly attached on the left setting block, right setting block respectively, allows the snap-on blade depart from the base.Also it is This, compared with prior art, the Advantageous Effects of the present invention are：

1. can dexterously allow very much the left side arm and right arm to be each the elastic support of other side for this, i.e., in institute On the left of stating, arm and right arm are easily recovered to original state after drawing in each other.

2. described in, left side arm and the head and the tail section of right arm link together, and greatly improve the snap-on blade on the whole Structural strength.

3. left side arm and right arm described in can divide equally suffered external force, greatly reduce the snap-on blade and select in material On strict demand, for example described snap-on blade can select to have resilient common plasticses manufacture and also be unlikely to be easily damaged.

Further technical scheme is it is also possible that the left barb is arranged on the substantially stage casing position of the left side arm, institute State the substantially stage casing position that right barb is arranged on the right arm.

Further technical scheme is it is also possible that the described left barb of the snap-on blade is left and right right with the right barb Claim arrangement.

Further technical scheme it is also possible that the left side arm, right arm are respectively in middle width, narrow end to end by two ends Shape.Allow the left side arm, right arm respectively in middle wide shape, be capable of the structural strength of medium position significantly, so as to The described left barb for being arranged on medium position and the structural strength of the right barb is allowed also to greatly improve；And allow the left side arm, Right arm respectively in two ends are narrowed end to end shape, can easily allow the left side arm, right arm deformation so as to being easily assembled and Dismantle the snap-on blade and the interior rail.

Further technical scheme is it is also possible that the left side arm, the smallest cross-section area at the two ends end to end of right arm are 10% to the 40% of the maximum cross section at stage casing position.

Further technical scheme is protruded from reversely it is also possible that being provided with the left side arm of the snap-on blade The reverse left projection in face, is provided with the reverse right projection for protruding from reverse face in the right arm.So can be by means of institute State reverse left projection, reverse right projection and the left receiving opening being arranged on the interior rail with their cooperation and right receiving Hole, further decomposes left setting block and right setting block on the base and is reversely applied to the reverse of the left side arm and right arm Active force, in other words, pulls out the pulling force produced during the interior rail, by the cephalic par of the snap-on blade, described reversely Left projection and reverse right projection three left side arm equably to the snap-on blade, right arm transmission pull out described interior The pulling force of rail is shared by the cephalic par of the snap-on blade and the reverse left projection, reverse right projection three, so as to drop significantly Extruding destruction of the pulling force of the low pulling interior rail to the snap-on blade.In this scenario, best scheme be by The reverse left projection, reverse right projection are arranged in correspondence with the left barb, the back side of the right barb, allow the snap-on leaf The torque of the positive and negative both direction suffered by the left side arm of piece, right arm has most short torque arm length, described so as to more allow The left side arm of snap-on blade, right arm are not easily susceptible to damage.

Further technical scheme it is also possible that the left widthwise edge, the right widthwise edge outer tip end along position It is respectively arranged with guiding chamfering.So left setting block and right setting on the base are easily guided in the assembling snap-on blade Block.Wherein, when the guiding chamfering does not refer to the manufacture snap-on blade, process transition fillet is had to use on mould, and It is the knuckle larger than the radius of turn of the process transition fillet.

Further technical scheme is it is also possible that the tail end in the snap-on blade is provided with and is just protruding from the benchmark Tail end to face is raised.The structural strength at the tail end position can so be greatly improved, be not only convenient for manufacture depanning and The structural strength of the snap-on blade can be improved.

Further technical scheme it is also possible that be provided with the left side arm of the snap-on blade protrudes from described The positive left projection in benchmark forward direction face, the left barb are formed in the positive left projection so as to the positive left projection includes The left laterally chimb for having the vertical chimb in the left side that in axial direction arranges and being arranged at an angle with the left vertical chimb, described left perpendicular The left barb is formed to chimb and the left angle laterally between chimb；It is provided with the right arm described in protruding from The positive right projection in benchmark forward direction face, the right barb are formed in the positive right projection so as to the positive right projection includes The right laterally chimb for having the vertical chimb in the right side that in axial direction arranges and being arranged at an angle with the right vertical chimb, described right perpendicular The right barb is formed to chimb and the right angle laterally between chimb.

This feature defines position and its structure that the left barb and the right barb are formed.According to the solution of the present invention, Forming in fact the left barb and the right barb can have kinds of schemes, and wherein the first is directly on a left side for the left side arm The right side of side or the right arm forms the barb of L-type, and the area of absence that the barb is located is on both forward and reverse directions through whole The panel-shaped base body of the snap-on blade；Second scheme is to be provided with the side arm of the snap-on blade and protrude from institute The positive projection in benchmark forward direction face is stated, the coupler body is not only provided at the sky that the positive projection position and the barb are located Missing plot domain can also be through entirely panel-shaped base body described in the snap-on blade on both forward and reverse directions；The third scheme is, On the basis of two kinds of schemes, the coupler body is arranged on the area of absence at the positive projection position but barb place positive and negative The panel-shaped base body on direction and not through the entirely snap-on blade, allow the barb be formed on the positive projection from And the positive projection includes the vertical chimb in axial direction arranged and horizontal with what the vertical chimb was arranged at an angle Chimb, the barb also have diapire body in reverse surface side, are inserted into so as to work as the left setting block on the base, right setting block When in the barb, the diapire body is also to be covered on the left setting block, right setting block.Such construction major advantage be The barb is allowed to be located at the positive face of the snap-on blade in the case where the left side arm, the transverse width of right arm is not increased Direction, substantially increases the left side arm, the structural strength of right arm, and wherein described coupler body itself can also strengthen the left side Side arm, the structural strength of right arm.Wherein described area of absence is exactly two side institute structures of the left barb or the right barb Into angular range.

Further technical scheme is it is also possible that the left barb and the right barb place area of absence are in both forward and reverse directions Above and there is diapire body not through the entirely panel-shaped base body of the snap-on blade, be located in the left barb, the right barb It is respectively arranged with the diapire body of area of absence through the panel-shaped base body and left vacancy outwardly, right vacancy.

Further technical scheme is it is also possible that set between the cephalic par and the left horizontal chimb of the snap-on blade Be equipped with slope is laterally guided along what the left side arm extended for guiding the left setting block to smooth the left side that slips into, the left side Link up on the cephalic par of the snap-on blade to guiding slope one end, the other end links up in the outside of the left laterally chimb Top edge；It is provided with along being used for that the right arm extends between the cephalic par and the right horizontal chimb of the snap-on blade Guide the right setting block to smooth the right side that slips into and be laterally guided slope, the right side is laterally guided slope one end and links up described On the cephalic par of snap-on blade, the other end links up on the outer tip end edge of the right laterally chimb.

Wherein, the left side is laterally guided slope, refers to that the slope is located at a left side for the left side arm of the snap-on blade Side risers（In other words towards left direction）, next defines the slope and acts primarily as the left setting on the guiding base Block smooths the function of slipping into the left barb；So when the outboard end grafting from the middle rail installs the interior rail to the middle rail When upper, originally the front end of the left side arm is slightly distorted by the left setting block top pressure of the base, the left setting on the base Block can be laterally guided slope along the left side and slide and be then slid into entering in the left barb, in the same manner, and the right side is to drawing Lead slope and also there is corresponding function and structure.

Wherein, the outer tip end edge of the left laterally chimb, refers to the tip edge positioned at leftmost outer, in the same manner, described The outer tip end of right laterally chimb is along also with corresponding function and structure.

Further technical scheme is it is also possible that between the cephalic par and the left horizontal chimb of the snap-on blade It is provided with the just slope to the left for extending and smoothing lifting along the left side arm on positive face direction, just slope one to the left End links up on the cephalic par of the snap-on blade, and the other end links up on the positive top edge of the left laterally chimb；Described It is provided with the cephalic par of snap-on blade and the right positive face direction laterally between chimb and extend along the right arm and put down The just slope to the right of sliding lifting, described just slope one end links up on the cephalic par of the snap-on blade to the right, the other end Link up on the positive top edge of the right laterally chimb.

Wherein, just slope or the just slope to the right to the left, can mainly lift the left barb or the right side Structural strength of the barb to line segment arm body between the cephalic par of the snap-on blade, can allow left laterally chimb and the right side again Horizontal chimb is unlikely to protrude loftyly and by easy impact damage, the positive slope is similar to river levee bank protection slope.

Apply the furniture slide rail of the slide rail anti-drop device, the furniture slide rail include the middle rail of generally U-shaped channel-shaped and Interior rail, the middle rail are slid axially towards contrary and described interior rail with the notch of interior rail and are arranged in the U-type groove of the middle rail； It is characterized in that：Arrange that the base, the base are connected in the middle rail in the U-type groove of the outer end end of the middle rail In the groove bottom wall of U-type groove and the left setting block arranged on the base and right setting block is allowed to be located at the axial direction of the interior rail； The snap-on blade is connected in through the connecting hole of the snap-on blade cephalic par U-type groove of the interior rail by connected nail In groove bottom wall, the reverse face of the snap-on blade is allowed to be fitted in the groove bottom wall of the interior rail U-type groove and allow the snap-on blade Two support arms extend to the outside extreme direction of the interior rail.

Further technical scheme can receive institute it is also possible that being additionally provided with the groove bottom wall of the interior rail U-type groove The left receiving opening of reverse left projection is stated, the reverse left projection is extend in the left receiving opening, the horizontal stroke of the reverse left projection To the transverse width that width is less than the left receiving opening, the front end of the reverse left projection acts against the hole wall of the left receiving opening On；The right receiving opening that can receive the reverse right projection is additionally provided with the groove bottom wall of the interior rail U-type groove, described reverse Right projection is extend in the right receiving opening, and the transverse width of the reverse right projection is laterally wide less than the right receiving opening Degree, the front end of the reverse right projection is acted against on the hole wall of the right receiving opening.So described receiving opening can be in laterally side The avoidance space that can move left and right is provided for the reverse projection upwards but the reverse projection can be suppressed in the axial direction So as to axial moment is passed to the reverse projection.

Further technical scheme is it is also possible that also include the outer rail of generally U-shaped channel-shaped, the middle rail is slidably arranged in In the U-type groove of the outer rail and the middle rail and the notch of the outer rail are towards identical；The outer rail has groove bottom wall and groove Side wall, the limit stops device for being provided with preventing the middle rail from sliding in the U-type groove of the inner side of the outer rail so as to The middle rail can be limited on the outer rail, slide stroke to medial extremity direction.

Description of the drawings

Fig. 1 is the structural representation of the overlook direction of the furniture slide rail for applying technical solution of the present invention；

Fig. 2 is the decomposition texture schematic diagram of the furniture slide rail shown in Fig. 1；

Fig. 3 is the cross section structure diagram in A-A directions in Fig. 1；

Fig. 4 is the decomposing schematic representation of Fig. 3, for simplification view, eliminates the cushion pad block 4, snap-on blade in figure 5；

Fig. 5 is the structural representation of the positive apparent direction of first skeleton 610；

Fig. 6 is the structural representation of the overlook direction of the cushion pad block；

Fig. 7 is the cross-sectional view in inner side end position of the interior rail 3；

Fig. 8 is the structural representation of the overlook direction of the middle rail 2；

Fig. 9 is the partial enlarged drawing in B regions in Fig. 8；

Figure 10 is the structural representation of the overlook direction of the base 7；

Figure 11 is the dimensional structure diagram of the base 7；

Figure 12 be the base 7 shown in Figure 11 is turned after observe gained dimensional structure diagram；

Figure 13 be apply the first embodiment the snap-on blade 5 overlook direction structural representation, institute in figure State the benchmark forward direction face 5a of snap-on blade 5 upward；

Figure 14 be snap-on blade shown in Figure 13 5 is turned after observe gained structural representation, snap-on described in figure The reverse face 5b of blade 5 is upward；

Figure 15 is the structural representation of the side-looking direction of snap-on blade shown in Figure 13 5；

Figure 16 is the dimensional structure diagram of the shown snap-on blade 5 for applying the first embodiment；

Figure 17 is the reverse projection（55、56）With the receiving opening（34、34a）Between matching relationship schematic diagram；

Figure 18 is the structural representation of the overlook direction of 5 ＇ of snap-on blade for applying second embodiment；

Figure 19 is the structural representation of the overlook direction of 5 ＂ of snap-on blade for applying the third embodiment.

Specific embodiment

The drawing type part of some drawers, movable mold etc would generally be installed in furniture, and in order to for described in Drawing type part provides sliding support, between the drawing type part and the furniture is provided with furniture slide rail.Such as Fig. 1 and Tu 2 is a kind of three folding concertina type furniture guide rails 100 of the new structure for applying technical solution of the present invention, including generally U-shaped channel-shaped Outer rail 1, middle rail 2 and interior rail 3.The middle rail 2 slide axially be arranged in the U-type groove of the outer rail 1 and the middle rail 2 with Towards identical, the interior rail 3 slides axially in the U-type groove for be arranged on the middle rail 2 and the middle rail notch of the outer rail 1 2 is contrary with the notch of the interior rail 3 direction；Be provided with preventing in the U-type groove of the medial extremity 1a of the outer rail 1 described in The limit stops device that rail 2 and interior rail 3 are inwardly slided is so as to limiting the middle rail 2 and interior rail 3 sliding to medial extremity direction Stroke；And the cunning for being provided with preventing the interior rail 3 from undesirably falling off the middle rail 2 between the middle rail 2 and the interior rail 3 Rail anti-drop device.

After the furniture guide rail 100 is installed in furniture, it is the middle rail that the outer rail 1 is fixed on furniture 2 and interior rail 3 provide positioning support.The interior rail 3 is relatively described the leading near furniture drawing type movable part side of outer rail 1 Rail, is generally fixedly connected the interior rail 3 with furniture drawing type movable part, is pulling the drawing type movable part While telescopic moving, the drawing type movable part can also pull the interior rail 3 to slide together, and the middle rail 2 is to slide The guide rail being arranged between the outer rail 1 and interior rail 3.And the convenience in order to be discussed below, we are first to the furniture guide rail 100 Two ends be defined respectively, the one end for stretching out direction near the middle rail 2 and interior rail 3 is defined as outboard end, relative The other end orientate medial extremity as.

Below in conjunction with the accompanying drawings 2, Fig. 3, Fig. 4 and Fig. 5 first make to the sliding structure between the outer rail 1, middle rail 2 and interior rail 3 Introduce：

As shown in Figure 3 and Figure 4, the outer rail 1, the middle rail 2 and all generally U-shaped channel-shaped of the interior rail 3, be this they It is respectively provided with groove bottom wall and erects the setting groove sidewall for being arranged on the groove bottom wall both sides respectively.A pair in the outer rail 1 The inner side of groove sidewall 10 is respectively disposed with two upper and lower first ball grooves 101 arranged in parallel, a pair of groove sides of the interior rail 3 The outside of wall 30 is respectively disposed with two articles of upper and lower 4th ball grooves 301 arranged in parallel, a pair of groove sidewalls 20 of the middle rail 2 Outside be respectively disposed with two upper and lower second ball grooves arranged in parallel for adapting to first ball grooves 101 201, the first ball assembly 61 with skeleton is provided between first ball grooves 101 and second ball grooves 201, described The length for being shorter in length than first ball grooves 101 and second ball grooves 201 of the first ball assembly 61, be this described One ball assembly 61 is only arranged in the local segment between first ball grooves 101 and second ball grooves 201.This Sample, during the middle rail 2 is slided on the outer rail 1, the first ball assembly 61 also can be slided with the middle rail 2 And provide for the middle rail 2 and smoothly slide support.In addition, the inner side of a pair of groove sidewalls 20 of the middle rail 2 is respectively disposed with Adapt to two articles of upper and lower 3rd ball grooves 202 arranged in parallel of the 4th ball grooves 301, the 3rd ball grooves The second ball assembly 62 with skeleton between 202 and the 4th ball grooves 301, similarly, the second ball assembly 62 Be shorter in length than the length of the 3rd ball grooves 202 and the 4th ball grooves 301, be this described second ball assembly 62 only It is arranged in the local segment between the 3rd ball grooves 202 and the 4th ball grooves 301.So, when the interior rail 3 is in institute State during sliding on rail 2, the second ball assembly 62 also can be slided with the interior rail 3 and be provided for the interior rail 3 Support is smoothly slided.

As shown in Figure 3 and Figure 5, the first ball assembly 61 with skeleton includes the first plate-like skeleton 610 and sets The first ball set on first skeleton 610 is put, first ball set includes arranging under ball set 611 and first on first Row's ball set 611a.According to the ball set on first skeleton 610（611、611a）In ball placement position phase Should be provided with for installing the ball installing hole 6100 of the ball.If row's ball set 611 and first time row's rolling on first When ball in pearl group 611a is by the way of upper and lower corresponding setting, correspondingly need to make the ball installing hole 6100 upper and lower It is correspondingly arranged, so, the ball installing hole 6100 that upper and lower corresponding is arranged can substantially weaken the knot of first skeleton 610 Structure intensity, makes first skeleton 610 be very easy to damage occur.Given this different from existing conventional technical scheme, this On bright described first row ball set 611 in ball with described first time arrange ball set 611a in ball upper and lower to Upper dislocation arrangement.Technical problem thus can be dexterously solved, makes first skeleton 610 have appropriate structure strong Degree.And in the mode of here dislocation arrangement, the ball in first time row ball set 611a close even can be stretched slightly Enter on first in the space between adjacent two balls in row's ball set 611 such that it is able to suitably reduce described first The height of ball assembly 61, reduces its taking up room in the height direction, is conducive to the entirety for reducing the furniture guide rail 100 Highly.

And pass through long-term experiment and find, on described first, row's ball set 611 is slided between the outer rail 1 and middle rail 2 When, the rear and front end original position due to arranging ball set 611 on first is main forced section and is very easy to make first bone Frame 610 is contacted generation friction and is damaged with the outer rail 1 or middle rail 2, in consideration of it, further improvement project is, such as Fig. 5 institutes Show, the ball interval pitch of the first time row rear and front end original position of ball set 611a on first skeleton 610 （L1、L3）Ball interval pitch L2 less than middle section position.So, rise in the rear and front end of described first time row's ball set 611a The ball of beginning position is relatively intensive can to make first skeleton 610 keep suitable gap empty with the outer rail 1 or middle rail 2 Between, it is to avoid or minimizing first skeleton 610 is contacted generation friction and is damaged with the outer rail 1 or middle rail 2.Secondly, above-mentioned phase Can also be that the outer rail 1 and middle rail 2 provide more stable support to intensive ball.Certainly as another kind of embodiment party Formula, can also be that the relatively intensive ball of 611 rear and front end original position setting of row's ball set is also possible on described first.

Further, in 610 both sides of the first skeleton and corresponding to arranging ball set 611 on described first and arrange for first time The position of ball set 611a is respectively arranged with protrusion rib（612、612a）.So, by the protrusion rib（612、612a） First skeleton 610 and the outer rail 1, the contact area of middle rail 2 is further reduced, and is reduced to first skeleton 610 abrasion.In addition by the protrusion rib（612、612a）The structure that 610 both sides of the first skeleton can also be strengthened is strong Degree.

As shown in Figure 2 and Figure 4, the second ball assembly 62 with skeleton includes 620 He of the second skeleton of U-shaped channel-shaped The second ball set being arranged in the groove sidewall of second skeleton 620, second ball set include arranging ball set on second 621 and second time row ball set 621a, on described second row ball set 621 in ball and described second time arrange ball set 621a In ball misplace upwards arrangement in upper and lower.As such, it is possible to obtain with described first on arrange ball set 611 in ball with Ball in first time row ball set 611a misplaces in upper and lower upwards and arranges similar effect.

Further, the groove sidewall of second skeleton 620 is divided into spaced apart island 623, and each is described little Three ball installing holes 624 being triangularly arranged are set on island 623, rolling is installed on each described ball installing hole 624 Pearl.So, second skeleton 620 has certain elastic deformability, the axle between the interior rail 3 and the middle rail 2 To sliding the size in gap due to foozle or rigging error when change occurs in certain fragment position, second skeleton 620 Shape can suitably be adjusted so as to preventing by clamping stagnation in the interior rail 3 and the middle rail by the elastic deformability of itself Between 2.

In sum, between the outer rail 1 and the middle rail 2, all set respectively between the middle rail 2 and the interior rail 3 Double layers of rolling balls structure is equipped with, the outer rail 1 and the middle rail 2, the middle rail 2 and institute can be made by the double layers of rolling balls structure State interior rail 3 and be respectively provided with upper and lower upwards and uniformly slide gap, so that the middle rail 2, interior rail 3 is avoided in the mistake for sliding Occur upper and lower rocking and the phenomenons such as clamping stagnation, abrasion occur and then have influence on and slide effect upwards in journey.

The middle rail 2 and the interior rail 3 are to be limited by the limit stops device to the stroke that slides in medial extremity direction Fixed, the limit stops device can directly stop the middle rail 2 and the interior rail 3 simultaneously；Can also adopt as shown in Figure 2 Mode, arranges downward bending side 31 in the outboard end of the interior rail 3, and the interior rail 3 can be leaned by the lower bending edges 31 The outboard end of the middle rail 2 and be limited on the middle rail 2, and the middle rail 2 be directly by the limit stops device limit On the stroke that slides from outer rail 1 to medial extremity direction, so, the limit stops device can be common with the downward bending side 31 Limit axial direction of the interior rail 3 to medial extremity direction on outer rail 1 and slide stroke.

In the present invention, the structure of the limit stops device be also distinguished, below in conjunction with the accompanying drawings 2, Fig. 6, Fig. 7, Fig. 8 and Fig. 9 is described to the concrete structure of the limit stops device.

As shown in Fig. 2 the limit stops device includes standing on the medial extremity of the groove bottom wall 11 for being arranged on the outer rail 1 A pair axial erected pieces（12、12a）, the axial erected piece（12、12a）Integrally formed with the outer rail 1 for example with punching press Directly it is integrally formed.The implication of the standing essentially consists in the axial erected piece（12、12a）It is set to be approximately perpendicular to described It can also be slightly less than 90 ° that the direction of groove bottom wall 11 can be 90 °.The axial direction is the extension side of the furniture guide rail 100 To.So, in the middle rail 2 and interior rail 3 to medial extremity axis of orientation to sliding and to the axial erected piece（12、12a）Apply During axial impact power, the axial erected piece（12、12a）It is not easy to occur stress bending deformation particularly to topple in axial direction Deformation is lain down, and is this described axial erected piece（12、12a）The layout type in axial direction extending substantially increases described spacing Backstop apparatus withstand shocks the ability of power.Substantially, only arrange an axial direction on the medial extremity of the groove bottom wall 11 of the outer rail 1 to erect Vertical piece, or to arrange an axial erected piece and the mode of a longitudinal erected piece be also feasible scheme.Regardless of whether what adopts The mode of kind, can just realize above-mentioned technique effect at least provided with an axial erected piece being in axial direction disposed to extend.

In addition, the limit stops device also includes being plugged into the axial erected piece（12、12a）On cushion pad Block 4.The cushion pad block 4 is using soft rubber or the like manufacture.As shown in fig. 6, from terms of overlook direction, the cushion pad Block 4 is substantially trapezoidal so as to wide end portion 40 and narrow end portion 41, the outboard end in said narrow end portion 41 is provided with both sides to left and right Laterally protruding projection（411、411a）, raised described in a pair（411、411a）Transverse width less than the wide end portion 40 horizontal stroke To width.So, in the projection（411、411a）Formed between the wide end portion 40 and narrow transition part 412.

And a pair are additionally provided with the cushion pad block 4 with the axial erected piece（12、12a）The inserting groove of adaptation 42.The cushion pad block 4 is plugged on the axial erected piece by the inserting groove 42（12、12a）Above and said narrow end Arrange towards the middle rail 2 and 3 direction of interior rail in portion 41.From in terms of side-looking direction, the height of the cushion pad block 4 is more than or equal to institute State axial erected piece（12、12a）Erect height but the short groove bottom wall 32 in the interior rail 3 after the interior rail be installed.So, institute Stating cushion pad block 4 substantially being capable of the fully wrapped around axial erected piece（12、12a）, it is to avoid the middle rail 2 and interior rail 3 are straight Impact is connect in the axial erected piece（12、12a）Above and to the axial erected piece（12、12a）Cause excessive damage, moreover it is possible to Enough slow down the middle rail 2 and interior rail 3 to medial extremity direction slide when to the axial erected piece（12、12a）Impulsive force, and energy Enough reduce the middle rail 2 and interior rail 3 impinges upon the axial erected piece（12、12a）The noise content of upper generation.And the buffering Therefore soft block 4 will not also not hinder the furniture drawing type movable part above the groove bottom wall 32 of the interior rail 3 Install.

When the middle rail 2 and interior rail 3 are struck on the limit stops device, the middle rail 2 and interior rail 3 can also be born simultaneously The opposition that the limit stops device gives, in order to prevent the middle rail 2 and interior rail 3, because of bounce, outside side is slided OK, below the structure of the middle rail 2 and interior rail 3 is further improved again.

First, first the structure of the middle rail 2 is improved.As shown in Figure 8 and Figure 9,2 medial extremity 2a's of the middle rail U-shaped middle rail fork mouth groove 22 is provided with groove bottom wall 21, and the medial extremity of the middle rail fork mouth groove 22 is in a lateral direction somewhat Narrow so as to be in beam mouth shape relatively, also just the relative inner side notch 221 for narrowing is formed in the medial extremity of the middle rail fork mouth groove 22. It is respectively provided with and the projection in the both sides of the outboard end of the middle rail fork mouth groove 22（411、411a）The pit 220 of adaptation, this Sample, the middle rail fork mouth groove 22 have the shape substantially uniform with the narrow end portion 41 of the cushion pad block 4 and fit dimension, The middle rail fork mouth groove 22 is adapted to said narrow end portion 41.

When advancing the middle rail 2 to medial extremity and allow the middle rail fork mouth groove 22 to be plugged on the cushion pad block 4, institute The outside notch 221 for stating rail fork mouth groove 22 is engaged in the narrowing on transition part 412 of the cushion pad block 4, now described in The outside notch 221 of rail fork mouth groove 22 has actually been stuck in the left and right projection of the cushion pad block 4（411、411a）With Narrowing on transition part 412 between the wide end portion 40, so as to the middle rail fork mouth groove 22 contains the narrow of the cushion pad block 4 End 41.So, the cooperation by the middle rail fork mouth groove 22 and the narrow end portion 41 of the cushion pad block 4 can be to being plugged into Middle rail 2 on the cushion pad block 4 is positioned, by described after preventing the middle rail 2 from colliding on the cushion pad block 4 The impact of the reaction punch power that cushion pad block 4 gives and the extreme direction laterally that rebounds is slided.For this purpose, described contain contain Justice, is primarily referred to as the middle rail 2 and can be combined on the cushion pad block 4 with certain adhesion but be needed big again in applying The cushion pad block 4 could be departed from during the external force of a bit.

Then, structure improvement is also made to the interior rail 3, and concrete technical scheme is as shown in fig. 7,3 medial extremity of interior rail Groove sidewall 30 in a lateral direction somewhat relative narrow so as to be in beam mouth shape so as to the medial extremity of the interior rail 3 width somewhat Less than the width in the wide end portion 40, the medial extremity of the interior rail 3 adapts to the wide end portion 40 of the cushion pad block 4, when pushing away When entering the interior rail 3 and allowing the interior rail 3 to be plugged on the cushion pad block 4, the groove sidewall of 3 medial extremity of interior rail also can Contain the wide end portion 40 of the cushion pad block 4.It should be noted that the groove sidewall 30 of described interior rail 3 shown in Fig. 7 relative to The groove sidewall 30 of the described interior rail 3 shown in Fig. 4 is shunk slightly inwardly, and the groove sidewall 30 of the described interior rail 3 being because shown in Fig. 7 is The profile of medial end position, and the groove sidewall 30 of the described interior rail 3 shown in Fig. 4 is not the profile of inner side end position.

According to above-mentioned technical proposal, adopt between 3 medial extremity of interior rail and the wide end portion 40 of the cushion pad block 4 The fit structure adopted between fit structure and 2 medial extremity of middle rail and the narrow end portion 41 of the cushion pad block 4 is similar , also achieve similar effect.When advancing the interior rail 3 to allow the interior rail 3 to be plugged on the cushion pad block 4, institute The groove sidewall for stating 3 medial extremity of interior rail can contain the wide end portion 40 of the cushion pad block 4, by 3 medial extremity of interior rail with The cooperation in the wide end portion 40 of the cushion pad block 4 can play the interior rail 3 in place, prevent the interior rail 3 from colliding described The anti-force given by the cushion pad block 4 after on cushion pad block 4 is affected and the extreme direction laterally that rebounds is slided.

Be provided with preventing between the middle rail 2 and the interior rail 3 the interior rail 3 undesirably fall off when pulling out described in The slide rail anti-drop device of rail 2, the snap-on blade 5 that the slide rail anti-drop device is included base 7 and coordinated with the base 7, wherein The snap-on blade 5 on the middle rail 2 of the base 7 is arranged on the interior rail 3.Below in conjunction with the accompanying drawings 2 and Figure 10 to Figure 19 is described to the concrete structure of the base 7 and the snap-on blade 5：

As shown in Figure 10, Figure 11 and Figure 12, the base 7 includes substrate 71 and stands just being symmetricly set on the substrate 71 It is left setting block 72 and right setting block 73 to a pair of upstanding block on the direction of face, the left setting block 72 and right setting block 73 are to set The convex tectosome on the substrate 71 is put, is interval setting between the left setting block 72 and right setting block 73 , it is that this is formed with avoidance space 70 between them；Also set up in the left outboard end for erectting block 72 and right setting block 73 It is oriented to slope（720、730）, import in the interior rail 3 so as to convenient；It is additionally provided with the outboard end of the base 7 anti- Elastic arm 700 is hit, so as to the downward bending side 31 of the outboard end of the interior rail 3 when the interior rail 3 is withdrawn completely can Elastic top is pressed on the anticollision elastic arm 700.In addition, the left setting block 72 and right setting block 73 in axial direction extend cloth Put.It should be strongly noted that the axial direction is to be provided with the bottom The bearing of trend of the middle rail 2 of seat 7, or perhaps the glide direction of the middle rail 2, when being installed to the middle rail 2 the base 7 After upper, the bearing of trend for erectting block is consistent with the bearing of trend of the middle rail 2.

The base 7 also includes being symmetricly set on a pair of fixation alar parts on 71 positive face direction of the substrate, i.e., a described left side Fixed alar part 74 and right fixed alar part 75.The left fixed alar part 74 and right fixed alar part 75 are located at the left and right of the substrate 71 On two sides and be also spaced, and described left setting block 72 and right setting block 73 be located at left 74 He of fixed alar part In clearance space between right fixed alar part 75.In addition, the base 7 also includes being arranged on a pair on 71 reverse face of the substrate Fixed foot portion, i.e., described left fixed foot portion 76 and right fixed foot portion 77.

Multiple embodiments can be adopted as the snap-on blade 5, preferred four kinds of embodiments are set forth below.Institute The first embodiment for stating snap-on blade 5 is as follows：

As shown in Figure 13, Figure 14, Figure 15 and Figure 16, the snap-on blade 5 is substantially plate-like with panel-shaped base body 50, described There is panel-shaped base body 50 the benchmark forward direction face 5a and reverse face 5b of the benchmark contrary with the positive face 5a, the panel-shaped base body 50 to wrap Include the cephalic par 59 for being provided with connecting hole 590 and the two support arms i.e. left side arm 51 that is drawn from the both sides of the cephalic par 59 respectively With right arm 52, substantially caudad direction extends and links together in tail end 57 in the same direction for the left side arm 51 and right arm 52 So as to form central vacancy 591 in the middle section of the snap-on blade 5.

Wherein, the reference plane refers to the tow sides of the snap-on blade 5（5a、5b）In for determining the positioning of benchmark Face, it are the faces that there are in tow sides the flat surfaces of maximum area to be located, as flatly surface and the height of lofty rise Relation between mountain, it is clear that it is flat ground that the reference plane that the present invention is adopted just is similar to.Can be one for reference plane this described The tabular surface of individual determination, or a design face that drafts.

Wherein, the connecting hole 590 is for the snap-on blade 5 is navigated to institute by means of the attachment means of rivet class State the detent mechanism on interior rail 3.When axial thrust or pulling force is applied to the interior rail 3, the axial force is passed by rivet etc. It is delivered on the cephalic par 59 of the snap-on blade 5, the cephalic par 59 becomes the first stress point of the snap-on blade 5.

Wherein, the panel-shaped base body 50 of the snap-on blade 5 also include respectively be located at the cephalic par 59 both sides simultaneously Substantially in the same direction from the left side arm 51 that caudad direction extends of cephalic par 59 and the right arm 52 of the snap-on blade 5, the left side Side arm 51 and right arm 52 link together so as to forming central vacancy 591 in the middle section of the snap-on blade 5 in tail end. First define the left side arm 51 to extend from the both sides of the cephalic par 59 just as the two legs of compasses with right arm 52 The structure for going out, but the left side arm 51 and right arm 52 linked together so as to allowing the left side arm 51 and the right side again in tail end 57 Side arm 52 defines an integrally-built spring leaf, the axial axis position of the connecting hole 590 of the cephalic par 59 Between the left side arm 51 and right arm 52；Secondly, the both sides arm body for defining the central vacancy 591 is exactly the left side Arm 51 and right arm 52, the central vacancy 591 are that the left side arm 51 and right arm 52 provide avoidance sky to middle skew Between, therefore, when relative tightening force is applied to the left side arm 51 and right arm 52,52 energy of the left side arm 51 and right arm Tectosome that is enough relatively close by the central vacancy 591 and making simultaneously to be arranged on, the forward direction being for example discussed below Left projection 533 and positive right projection 543 are also relatively close.

The positive left projection of the benchmark forward direction face 5a for protruding from the panel-shaped base body 50 is provided with the left side arm 51 533, the positive left projection 533 include the vertical chimb 531 in the left side that in axial direction arranges and with the left vertical chimb 531 The left laterally chimb 530 being arranged at an angle, the angle between the left vertical chimb 531 and the left horizontal chimb 530 form L The left barb 53 of type.The left barb 53 is arranged on the substantially stage casing position of the left side arm 51.The left barb 53 is located The panel-shaped base body 50 of the area of absence on both forward and reverse directions and not through the entirely snap-on blade 5, the left barb 53 exist Reversely surface side also has diapire body 534, and the diapire body 534 is also the part wall body of the panel-shaped base body 50.In fact, described Left vertical chimb 53 is exactly the left vertical edges of the left barb 53, and the left laterally chimb 530 is exactly the left barb 53 Left widthwise edge.In addition, the L-type left-hand rotation angle of the left barb 53 is less than or equal to 90 ° and towards the left side and tail end direction, such institute Left setting block 72 is stated when snapping onto in the left barb 53, the left setting block 72 both can leave the left side from left side room and fall Hook 53, described in other words left setting block 72 can be slipped into from 53 left side of left barb, it is also possible to along from tail end to the axle of head end The left barb 53 is moved into direction or is exited in the opposite direction.

Similarly, the forward direction of the benchmark forward direction face 5a for protruding from the panel-shaped base body 50 is provided with the right arm 52 Right projection 543, the positive right projection 543 include the vertical chimb 541 in the right side that in axial direction arranges and right vertical with described The right laterally chimb 540 that chimb 541 is arranged at an angle, the folder between the right vertical chimb 541 and the right horizontal chimb 540 The right barb 54 of angular l-shaped.The right barb 54 is arranged on the substantially stage casing position of the right arm 52.The right barb 54 The area of absence at place is on both forward and reverse directions and not through entirely 5 place panel-shaped base body 50 of the snap-on blade, the right barb 54 also have diapire body 544 in reverse surface side.In fact, the right edge of the right vertical chimb 541 becomes the right barb 54 Left vertical edges, and the lower side of the right laterally chimb 540 becomes the left widthwise edge of the right barb 54.In addition, the right side The L-type right turn angle of barb 54 so snaps onto institute in the right barb 54 less than or equal to 90 ° and towards the right and tail end direction State right setting block 73 and both the right barb 54 can be left from the right room, it is also possible to move to the axial direction of head end along from tail end Move and enter the right barb 54.The left barb 53 is left and right with the right barb 54 be arranged symmetrically and symmetrical axis with The axial axis line overlap of the connecting hole 590.

Further technical scheme is connected between the cephalic par 59 and the left horizontal chimb 530 of the snap-on blade 5 Connect the external side of arm and be additionally provided with small rut 513, so as to improve the oar of this section of arm body；The same head end in the snap-on blade 5 Between portion 59 and the right horizontal chimb 540, the external side of linking arm is additionally provided with small rut 523.

Further technical scheme is, between the cephalic par 59 and the left horizontal chimb 530 of the snap-on blade 5 Be provided with just slope 511 to the left for extending and smoothing lifting along the left side arm 51 on positive face 5a directions, described just to the left 511 one end of slope links up on the cephalic par 59 of the snap-on blade 5, and the other end links up in the left laterally chimb 530 Positive top edge；Set on the cephalic par 59 of the snap-on blade 5 and the right positive face 5a directions laterally between chimb 540 Just slope 521 to the right for extending and smoothing lifting along the right arm 52 are equipped with, described just 521 one end of slope links up to the right On the cephalic par 59 of the snap-on blade 5, the other end links up on the positive top edge of the right laterally chimb 540.Wherein, institute Just slope 511 or just slope 521 to the right to the left are stated, the left barb 53 can be mainly lifted or right barb 54 is arrived The structural strength of line segment arm body between the cephalic par 59 of the snap-on blade 5, can allow left laterally chimb 530 and the right side again Laterally chimb 540 be unlikely to protrude loftyly and by easy impact damage, the positive slope（511、521）Similar to river levee Bank protection slope.

Further technical scheme is, as shown in figure 13, in the left laterally chimb 530, the right laterally chimb 540 Outer tip end is respectively arranged with guiding chamfering (532,542) along position.So institute is easily guided into when the snap-on blade 5 is assembled State the left setting block 72 and right setting block 73 on base 7.Wherein, guiding chamfering (532,542) does not refer to the manufacture bullet Process transition fillet is had to use on mould during button blade 5, but bigger than the radius of turn of the process transition fillet one A little knuckles.

It is illustrated in figure 2 showing for installment state of the slide rail anti-drop device in being installed on the furniture guide rail 100 It is intended to.Wherein, 7 layout of the base is in the U-type groove of the middle rail 2.U-type groove in the outer end end of the middle rail 2 A pair of installing holes, fixed foot portion described in a pair of the base 7 is provided with groove bottom wall（76、77）It is connected to the installing hole Interior, and alar part is fixed described in a pair of the base 7（74、75）Acted against in a pair of groove sidewalls 20 of the middle rail 2 respectively.This Sample, the base 7 are connected in the middle rail 2U type grooves and allow the left setting block 72 and right setting block 73 that arrange on the base 7 It is located at the axial direction of the middle rail 2.In addition, being incited somebody to action through the connecting hole 590 of 5 cephalic par 59 of the snap-on blade by connected nail The snap-on blade 5 is connected in the groove bottom wall 32 of the U-type groove of the interior rail 3, allows the reverse face 5b of the snap-on blade 5 to fit In the groove bottom wall of the interior rail 3U type grooves and allow the snap-on blade 5 outside extreme direction from two support arms to the interior rail 3 Extend, the medial extremity of the cephalic par 59 of the snap-on blade 5 towards the interior rail 3.

The snap-on blade 5 is made to coordinate vertically axial tension or thrust that the interior rail 3 applies extreme direction laterally After on the base 7, eliminating the axial force makes the snap-on blade 5 in free state, and a left side for the snap-on blade 5 is erected Can be each defined between the left setting block 72 of the base 7 and right setting block 73 to chimb 531 and right vertical chimb 541 Avoidance space 70 in, and the left laterally chimb 530 and right laterally chimb 540 can act against a left side for the base 7 simultaneously Erect on block 72 and the right front end edge for erectting block 73, the diapire body（534、544）It is respectively overlay in the left setting block 72, the right side Erect on block 73.Hereafter continue the axial tension for applying extreme direction laterally to the interior rail 3, the axial tension is by described The cephalic par 59 of snap-on blade 5 and the left side arm 51 and right arm 52 pass to the left barb 53, right barb 54 by institute State left setting block 72 on base 7 and right setting 73 reverse stop of block, now due to the cephalic par 59 of the snap-on blade 5 in Axis is located between the left side arm 51 and right arm 52, is that this described axial force can make the left side arm 51 and right arm 52 same When lateral shift laterally, so as to the left setting block 72, right setting block 73 are also tightly attached to the left barb 53, right respectively On barb 54, allow the snap-on blade 5 depart from the base 7.

And when needing the interior rail 3 to disassemble from the middle rail 2, firmly move the institute of the snap-on blade 5 State left side arm 51 and right arm 52 is drawn close to centre, the left side arm 51 and right arm 52 can be allowed respectively away from the left barb 53 or right barbs 54 thread off between the snap-on blade 5 and the base 7 so as to allow, and now extreme direction pulling laterally is described interior Rail 3, the positive left projection 533 of the snap-on blade 5 and positive right projection 543 are i.e. through the left setting block 72 and right setting block Avoidance space 70 between 73 and finally the interior rail 3 is disassembled from the middle rail 2.

After the snap-on blade 5 and the interior rail 3 are disassembled, subsequently also the snap-on blade 5 and described interior Rail 3 is reinstalled on the furniture guide rail 100, in consideration of it, in order to easily the snap-on blade 5 and the interior rail 3 are installed on the furniture guide rail 100, and further below the structure of the snap-on blade 5 is improved.

As shown in Figure 13 and Figure 16, in cephalic par 59 and the left laterally setting between chimb 530 of the snap-on blade 5 Have slope 510, institute is laterally guided along the left side for guiding the left setting block 72 to slip into that the left side arm 51 extends State a left side to be laterally guided 510 one end of slope and link up on the cephalic par 59 of the snap-on blade 5, the other end links up in the left horizontal stroke Outer tip end edge to chimb 530；It is provided between the cephalic par 59 and the right horizontal chimb 540 of the snap-on blade 5 Slope 520 is laterally guided along the right side for guiding the right setting block 73 to slip into that the right arm 52 extends, described The right side is laterally guided 520 one end of slope and links up on the cephalic par 59 of the snap-on blade 5, and the other end links up described right horizontal The outer tip end edge of chimb 540.So when the outboard end grafting from the middle rail 2 installs the interior rail 3 on the middle rail 2 When, originally the front end of the left side arm 51 is slightly distorted by left 72 top pressure of setting block of the base 7, the left side on the base 7 Setting block 72 can be laterally guided the slip of slope 510 along the left side and be then slid into entering in the left barb 53, in the same manner, institute State the right side slope 520 is laterally guided also with corresponding function and structure.

Further, the left side arm 51, right arm 52 shape that two ends are narrowed end to end in middle width respectively.The left side Side arm 51, the smallest cross-section area at the two ends end to end of right arm 52 are 10% to the 40% of the maximum cross section at stage casing position.So, Allow the left side arm 51, right arm 52 respectively in middle wide shape, the structural strength of medium position can be increased, set so as to allow Put the described left barb 53 in medium position also to greatly improve with the structural strength of the right barb 54；And allow the left side arm 51st, right arm 52 can easily allow the left side arm 51, right arm 52 to deform so as to easy respectively in the shape that two ends are narrowed end to end In snap-on blade 5 described in assembly or disassembly and the interior rail 3.

And due to narrowing at the two ends end to end of the left side arm 51, right arm 52, therefore, the left side arm 51, right arm 52 Two ends end to end structural strength relatively weak and easily bending deformation and damage.In consideration of it, it is further proposed that following solution Scheme：

As shown in Fig. 2, Figure 14, Figure 15 and Figure 17, on the left side arm 51 of the snap-on blade 5, it is provided with protrusion In the reverse left projection 55 of the reverse face 5b of benchmark, the reverse right side for protruding from the reverse face 5b of benchmark is provided with the right arm 52 Projection 56.The left receiving that can receive the reverse left projection 55 is additionally provided with the groove bottom wall 32 of the U-type groove of the interior rail 3 Hole 34a, the reverse left projection 55 are extend in the left receiving opening 34a, and the transverse width L7 of the reverse left projection 55 is little In the transverse width L6 of the left receiving opening 34a, the front end 550 of the reverse left projection 55 acts against the left receiving opening 34a Hole wall on；It is additionally provided with the groove bottom wall 32 of the U-type groove of the interior rail 3 and the right side of the reverse right projection 56 can be received to connect Receive hole 34, the reverse right projection 56 is extend in the right receiving opening 34, and the transverse width L4 of the reverse right projection 56 is little In the transverse width L5 of the right receiving opening 34, the front end 560 of the reverse right projection 56 acts against the right receiving opening 34 On hole wall.

So can be by means of the reverse left projection 55, reverse right projection 56 and described with their being arranged on of coordinating Left receiving opening 34a and right receiving opening 34 on interior rail 3, further decomposes the left setting block 72 and right setting block on the base 7 73 oppositions for being reversely applied to the left side arm 51 and right arm 52, in other words, produce when pulling out the interior rail 3 Pulling force, by the cephalic par 59 of the snap-on blade 5, the reverse left projection 55 and reversely 56 three of right projection equably to The left side arm 51 of the snap-on blade 5, right arm 52 transmit the pulling force for pulling out the interior rail 3 by the snap-on blade 5 Cephalic par 59 and the reverse left projection 55,56 three of reverse right projection share, pull the interior rail 3 so as to greatly reduce Extruding destruction of the pulling force to the snap-on blade 5.In this scenario, best scheme is by the reverse left projection 55th, reverse right projection 56 is arranged in correspondence with the left barb 53, the back side of the right barb 54, allows the snap-on blade 5 The torque of the positive and negative both direction suffered by left side arm 51, right arm 52 has most short torque arm length, described so as to more allow The left side arm 51 of snap-on blade 5, right arm 52 are not easily susceptible to damage.

Further, the tail end 57 in the snap-on blade 5 is provided with the tail end projection for protruding from benchmark forward direction face 5a 58.The structural strength at the tail end position 57 can be so greatly improved, is not only convenient for manufacturing depanning and institute being improved State the structural strength of snap-on blade 5.

It is the structural representation of second embodiment of the snap-on blade 5 ' as shown in figure 18：

Snap-on blade 5 ' using second embodiment is had compared with the snap-on blade 5 using the first embodiment There is similar structure, main distinction point is that the positive left projection 533, positive right projection is not provided with the snap-on blade 5 543 so that be related to the change of the formation structure of the left barb and the right barb.As shown in figure 18, in the snap-on blade 5 ' The left side arm 51 ' be above provided with the left vertical edges 531 ' in axial direction arranged and angled with the left vertical edges 531 ' The left widthwise edge 530 ' of arrangement, the angle between the left vertical edges 531 ' and the left widthwise edge 530 ' form the left barb 53 ', the area of absence that the left barb 53 ' is located is on both forward and reverse directions through the entirely snap-on blade 5 '.In addition, described The right arm 52 ' of snap-on blade 5 ' be above provided with the right vertical edges 541 ' in axial direction arranged and with the right vertical edges 541 ' right the widthwise edges 540 ' being arranged at an angle, the angle between the right vertical edges 541 ' and the right widthwise edge 540 ' are formed The right barb 54 ', the area of absence that the right barb 54 ' is located is on both forward and reverse directions through the entirely snap-on blade 5 '.

Further technical scheme is, the left widthwise edge 530 ', the right widthwise edge 540 ' outer tip end along position Put.So it is easily guided on the base 7 in the assembling snap-on blade 5 ' Left setting block 72 and right setting block 73.

The snap-on blade 5 as shown in figure 19 " the third embodiment structural representation：In the first reality described Be improved further on the basis of the snap-on blade 5 for applying mode, as shown in figure 19, in the snap-on blade 5 " on be not provided with The reverse left projection 55 and the reverse right projection 56, in the left side arm 51 " the medium position of lateral border be provided with court Outer left breach 512 ", the right arm 52 medium position of lateral border " be provided with right breach 522 outwardly ".It is preferred that Ground, is arranged on the left barb 53 " with the right barb 54 " place area of absence the left breach 512 " and right breach 522 " Diapire body（534、544）Above run through the panel-shaped base body 50 ".So pass through setting for the left breach 512 " and right breach 522 " Put the intensity of the adjustment left side arm 51 " and right arm 52 " so as to be easy to staff force to move with suitable elasticity described Snap-on blade 5 " the left side arm 51 " and under right arm 52 " drawing close to centre, consequently facilitating the snap-on blade 5 " is dismantled Come.

Certainly can also be exactly area of absence that the barb is located on both forward and reverse directions using the 4th kind of embodiment Through the whole described panel-shaped base body 50 that the snap-on blade 5 is located.

In above-mentioned four kinds of embodiments, the first embodiment is more outstanding for it, and reason is the left barb 53 and institute State right barb 54 be configured to allow the barb in the case where the left side arm 51, the transverse width of right arm 52 is not increased （53、54）Be located at the snap-on blade 5 positive face direction, substantially increase the left side arm 51, right arm 52 structure strong Degree, wherein described barb（53、54）Itself can also strengthen the left side arm 51, the structural strength of right arm 52.

Claims

1. slide rail anti-drop device, including base and the snap-on blade with the base engagement；It is characterized in that：

（a）The base includes substrate and stand the i.e. left setting block of setting a pair of upstanding block on the substrate and right setting Block, the left setting block and right setting block are in axial direction disposed to extend and arrange between the left setting block and right setting block There is avoidance space；

（b）The snap-on blade is substantially plate-like with benchmark forward direction face and the reverse face of the benchmark contrary with the positive face, bag The cephalic par for being provided with connecting hole and two support arms i.e. left side arm and the right arm that is drawn from the both sides of the cephalic par respectively is included, Substantially caudad direction extends and links together so as in the snap-on leaf in tail end in the same direction for the left side arm and right arm The middle section of piece forms central vacancy；

（c）The left barb of L-type is provided with the left side arm of the snap-on blade, and the left barb is included in axial direction The left vertical edges of arrangement and the left widthwise edge being arranged at an angle with the left vertical edges, the L-type left-hand rotation angle of the left barb is less than It is equal to 90 ° and towards the left side and tail end direction；The right barb of L-type is provided with the right arm, and the right barb includes The right vertical edges that in axial direction arranges and the right widthwise edge being arranged at an angle with the right vertical edges, the L-type of the right barb Right turn angle is less than or equal to 90 ° and towards the right and tail end direction；

（d）When the snap-on blade is in free state and coordinates on the base vertically, a left side for the snap-on blade Vertical edges and right vertical edges can be each defined in the avoidance space between the left setting block of the base and right setting block, And the left widthwise edge and right widthwise edge can be acted against on the front end edge of left setting block and right setting block of the base simultaneously.

2. slide rail anti-drop device according to claim 1, it is characterised in that：The left barb is arranged on the left side arm Substantially stage casing position, the right barb are arranged on the substantially stage casing position of the right arm.

3. slide rail anti-drop device according to claim 1, it is characterised in that：The described left barb of the snap-on blade and institute State that right barb is left and right to be arranged symmetrically.

4. slide rail anti-drop device according to claim 1, it is characterised in that：The left side arm, right arm are respectively in centre Wide and two ends are narrowed end to end shape.

5. slide rail anti-drop device according to claim 4, it is characterised in that：The left side arm, the two ends end to end of right arm Smallest cross-section area be stage casing position maximum cross section 10% to 40%.

6. slide rail anti-drop device according to claim 1, it is characterised in that：On the left side arm of the snap-on blade The reverse left projection for protruding from reverse face is provided with, and the reverse right projection for protruding from reverse face is provided with the right arm.

7. slide rail anti-drop device according to claim 1, it is characterised in that：In the left widthwise edge, the right widthwise edge Outer tip end be respectively arranged with guiding chamfering along position.

8. slide rail anti-drop device according to claim 1, it is characterised in that：It is provided with the tail end of the snap-on blade The tail end for protruding from the benchmark forward direction face is raised.

9. according to the arbitrary described slide rail anti-drop device of claim 1 to 8, it is characterised in that：Described in the snap-on blade The positive left projection for protruding from the benchmark forward direction face is provided with the arm of left side, and the left barb is formed in the positive left projection On include the vertical chimb in the left side in axial direction arranged and angled with the left vertical chimb so as to the positive left projection The left laterally chimb of arrangement, the angle between the left vertical chimb and the left horizontal chimb form the left barb；Institute State and in right arm, be provided with the positive right projection for protruding from the benchmark forward direction face, the right barb is formed in described just convex to the right So as to the positive right projection includes the vertical chimb in the right side in axial direction arranged and be in angle with the right vertical chimb on block The right laterally chimb of degree arrangement, the angle between the right vertical chimb and the right horizontal chimb form the right barb.

10. slide rail anti-drop device according to claim 9, it is characterised in that：Cephalic par and institute in the snap-on blade State left be laterally provided between chimb along the left side arm extend for guide the left setting block smooth the left side that slips into Guiding slope, the left side are laterally guided slope one end and link up on the cephalic par of the snap-on blade, and the other end links up The outer tip end edge of the left laterally chimb；Edge is provided between the cephalic par and the right horizontal chimb of the snap-on blade What the right arm extended is laterally guided slope for guiding the right setting block to smooth the right side that slips into, and the right side is laterally guided Slope one end links up on the cephalic par of the snap-on blade, and the other end links up in the outer tip end of the right laterally chimb Edge.

11. slide rail anti-drop device according to claim 10, it is characterised in that：Cephalic par and institute in the snap-on blade State and on left positive face direction laterally between chimb, be provided with the just slope to the left for extending and smoothing lifting along the left side arm, Described just slope one end links up on the cephalic par of the snap-on blade to the left, and the other end links up in the left laterally chimb Positive top edge；It is provided with along institute on the cephalic par of the snap-on blade and the right positive face direction laterally between chimb The just slope to the right that right arm extends and smooths lifting is stated, described just slope one end links up in the snap-on blade to the right On cephalic par, the other end links up on the positive top edge of the right laterally chimb.

12. slide rail anti-drop devices according to claim 9, it is characterised in that：The left barb and the right barb are located Area of absence has diapire body on both forward and reverse directions and not through the entirely panel-shaped base body of the snap-on blade, falls on the left side It is respectively arranged with hook, the diapire body of the right barb place area of absence through the panel-shaped base body and left sky outwardly Scarce, right vacancy.

The furniture slide rails of the 13. application arbitrary slide rail anti-drop devices of claim 1 to 12, the furniture slide rail include substantially be in The middle rail and interior rail of U-type groove shape, the middle rail are slid axially towards contrary and described interior rail with the notch of interior rail and are arranged in institute State in the U-type groove of rail；It is characterized in that：The base, the bottom are arranged in the U-type groove of the outer end end of the middle rail Seat is connected in the groove bottom wall of the middle rail U-type groove and to allow the left setting block arranged on the base and right setting block to be located at described The axial direction of interior rail；The snap-on blade is connected in through the connecting hole of the snap-on blade cephalic par by institute by connected nail In the groove bottom wall of the U-type groove for stating interior rail, the reverse face of the snap-on blade is allowed to be fitted in the groove bottom wall of the interior rail U-type groove simultaneously Two support arms of the snap-on blade are allowed to extend to the outside extreme direction of the interior rail.

14. furniture slide rails according to claim 13, it is characterised in that：Also set in the groove bottom wall of the interior rail U-type groove The left receiving opening that can receive the reverse left projection is equipped with, the reverse left projection is extend in the left receiving opening, described Reverse transverse width of the transverse width of left projection less than the left receiving opening, the front end of the reverse left projection act against described On the hole wall of left receiving opening；The right side that can receive the reverse right projection is additionally provided with the groove bottom wall of the interior rail U-type groove Receiving opening, the reverse right projection are extend in the right receiving opening, and the transverse width of the reverse right projection is less than the right side The transverse width of receiving opening, the front end of the reverse right projection are acted against on the hole wall of the right receiving opening.

15. furniture slide rails according to claim 13, it is characterised in that：Also include the outer rail of generally U-shaped channel-shaped, described Middle rail is slidably arranged in the U-type groove of the outer rail and the middle rail and the notch of the outer rail are towards identical；The outer rail There is groove bottom wall and groove sidewall, be provided with preventing the middle rail from sliding in the U-type groove of the inner side of the outer rail Limit stops device slides stroke to medial extremity direction so as to limit the middle rail on the outer rail.