CN109984493A - Sliding rail assembly - Google Patents

Abstract

The present invention includes one first rail, one second rail and an installation fitting in relation to a kind of sliding rail assembly.The installation fitting is configured with a third rail and one the 4th rail；Wherein, which can be displaced with respect to first rail, and second rail can be displaced with respect to the 4th rail.

Description

Sliding rail assembly

Technical field

The present invention relates to a kind of sliding rails, particularly relate to a kind of sliding rail assembly with sliding rails more than two sections or two sections.

Background technique

In general, a carrier can be configured with sliding rail as drawer at left and right sides of it in a machine frame system Assembly and install to a rack.Wherein, usual rack can have several columns, use when installing for each sliding rail assembly.Into one For step, each column has a height, therefore the column can be installed for several groups of sliding rail assemblys.

However, sometimes because otherwise the width of each sliding rail assembly may no more than specific standard the problem of space Width of the carrier in rack can be occupied, this also means that the sliding rail assembly with sliding rail more than two-segment type or two sections is in width It is restricted on degree, therefore, how to develop a kind of different sliding rail product and become the problem of can not be ignored for one.

Summary of the invention

Several sliding rails can be allowed mutually to assemble by an installation fitting the purpose of the present invention is to provide one kind may make up two Section or above sliding rail assembly.

A viewpoint according to the present invention, a kind of sliding rail assembly include one first rail；One second rail；One installation fitting；One Three rails are permanently connected one first side of the installation fitting；And one the 4th rail be permanently connected the one second of the installation fitting Side；Wherein, which can be displaced with respect to first rail, and second rail can be displaced with respect to the 4th rail.

Preferably, first rail goes to upper and lower parallel configuration relation with second rail.

Preferably, the installation fitting includes one first and one second, which is connected to this first, and this Four rails are connected to this second.

Preferably, the installation fitting also includes a horizontal part, and this first essentially vertically connect with this second The horizontal part and respectively towards different directions extend.

Preferably, the first side of the installation fitting and second side are opposite side.

Preferably, first rail include one first wall, one second wall and a side wall be connected to the first wall of first rail with Between second wall, the first wall of first rail, the second wall and side wall define a first passage, and the third rail is first logical by this Road can be displaced with respect to first rail.

Preferably, the third rail include one first wall, one second wall and a side wall be connected to the first wall of the third rail with Between second wall, the side wall of the third rail is connected to first of the installation fitting, and the first wall and the second wall of the third rail In the first passage.

Preferably, the sliding rail assembly also include one first help sliding device be movably mounted to first rail and the third rail it Between, first to help sliding device include several sliding aiding elements for this, being supported between first rail and the first wall of the third rail, and It is supported between first rail and the second wall of the third rail.

Preferably, there is the first wall of first rail opposite with the second segment first segment of a first segment to bend, and this There is second wall of one rail the 4th section of a third Duan Yuyi opposite third section to bend.

Preferably, the 4th rail include one first wall, one second wall and a side wall be connected to the first wall of the 4th rail with Between second wall, the side wall of the 4th rail is connected to second of the installation fitting, the first wall, the second wall and the side of the 4th rail Wall defines a second channel, and second rail can be displaced by the second channel with respect to the 4th rail.

Preferably, second rail include one first wall, one second wall and a side wall be connected to the first wall of second rail with Between second wall, and the first wall of second rail and the second wall are located in the second channel.

Preferably, the sliding rail assembly also include one second help sliding device be movably mounted to the 4th rail and second rail it Between, second to help sliding device include several sliding aiding elements for this, being supported between second rail and the first wall of the 4th rail, and It is supported between second rail and the second wall of the 4th rail.

Preferably, the sliding rail assembly also includes a clamping piece and an elastic component, which is movably mounted to the installation Accessory, the elastic component provide elastic force to the clamping piece, when second rail is moved to one the from a stowed position toward a first direction When one predetermined position, which responds elastic component offer elastic force and energy clip enables the installation fitting to second rail It is synchronously displaced with second rail toward the first direction.

Preferably, the clamping piece is pivotally connected with respect to the installation fitting, one of first wall and the second wall of the 4th rail have one Notch, the notch penetrate for a blocking part of the clamping piece, and one of the first wall of second rail and the second wall have one to support Relying part, when second rail is in first predetermined position, the blocking part of the clamping piece is contacted to the butting section, makes second rail By the butting section installation fitting can be driven toward the first direction.

Preferably, the sliding rail assembly also includes that a work package is configured at first rail, when second rail is first predetermined from this When position is moved to second predetermined position toward the first direction, which is driven by the work package, makes the clamping piece Blocking part no longer contacts the butting section, to release the synchronous shift relationship of the installation fitting Yu second rail.

Preferably, one of first wall and the second wall of first rail have a positioning region, when the installation fitting is past When the first direction is moved to a third predetermined position, which responds the spring energy clip of the elastic component to first rail Positioning region, to prevent displacement of the installation fitting with respect to first rail toward the first direction or a second direction.

Preferably, the sliding rail assembly also includes that bolster configuration is configured in first rail and a contact in the third Rail, when the third rail, which responds the installation fitting, is moved to a predetermined stroke toward the first direction, which contacts the buffering Part, to provide buffer function.

Preferably, a front of adjacent first rail includes one first block seat, and the sliding rail assembly also includes a holding seat, The bolster is mounted between first block seat and the holding seat.

Preferably, a front of adjacent 4th rail include one second block seat, and a block piece be movably connected with to this second Rail, when second rail is moved to an open position toward the first direction with respect to the 4th rail, the block piece is in a blocking position energy The stopper for contacting second block seat, to prevent second rail from continuing the displacement toward the first direction, and an operating parts is available The blocking position is no longer on to operate the block piece.

Preferably, this when second rail is moved to a predetermined stowed position toward the second direction from the open position Two rails will drive the clamping piece, make the clamping piece no longer clip to the positioning region of first rail.

Detailed description of the invention

Above-mentioned purpose, design feature and effect of the invention are confirmed to further illustrate, below with reference to attached drawing to this hair It is bright to be described in detail, in which:

Fig. 1 shows the stereoscopic schematic diagram of sliding rail assembly of the embodiment of the present invention.

Fig. 2 shows the decomposition diagram of sliding rail assembly of the embodiment of the present invention.

Fig. 3 shows the enlarged diagram of the a-quadrant of Fig. 2.

Fig. 4 shows the sectional schematic diagram of sliding rail assembly of the embodiment of the present invention.

Fig. 5 shows that sliding rail assembly of the embodiment of the present invention is in the schematic diagram of stowed position.

Fig. 6 shows the enlarged diagram of the a-quadrant of Fig. 5.

Fig. 7 shows the enlarged diagram of the B area of Fig. 5.

Fig. 8 shows that the second rail of sliding rail assembly of the embodiment of the present invention is moved to one first predetermined position toward a first direction When, second rail and the installation fitting pass through the schematic diagram that a clamping piece can be synchronously displaced.

Fig. 9 shows the enlarged diagram of the a-quadrant of Fig. 8.

Figure 10 shows that the second rail of sliding rail assembly of the embodiment of the present invention is moved to one toward the first direction with the installation fitting During second predetermined position, the work package on first rail contacts the schematic diagram of the clamping piece.

Figure 11 shows that the second rail of sliding rail assembly of the embodiment of the present invention is moved to this toward the first direction with the installation fitting When the second predetermined position, the schematic diagram of second rail and the synchronous shift relationship of the installation fitting is released by the work package.

Figure 12 shows that the installation fitting of sliding rail assembly of the embodiment of the present invention is moved to third pre-determined bit toward the first direction During setting, which contacts the schematic diagram of the clamping piece.

Figure 13 shows that the installation fitting of sliding rail assembly of the embodiment of the present invention is moved to third pre-determined bit toward the first direction When setting, a positioning region schematic diagram of the clamping piece clip to first rail.

When Figure 14 shows that the second rail of the embodiment of the present invention is moved to a position toward the first direction, which passes through One contact contacts the schematic diagram of a bolster.

Figure 15 shows the enlarged diagram of the a-quadrant of Figure 14.

When Figure 16 shows that the second rail of the embodiment of the present invention is moved to an open position toward the first direction, the installation fitting The schematic diagram of the bolster is further contacted by the contact.

Figure 17 shows the enlarged diagram of the a-quadrant of Figure 16.

Figure 18 shows that the second rail of the embodiment of the present invention is in the schematic diagram of the open position.

Figure 19 shows the mistake that the second rail of sliding rail assembly of the embodiment of the present invention is displaced from the open position toward a second direction Cheng Zhong, second rail contact the schematic diagram of the clamping piece.

During Figure 20 shows that the second rail of sliding rail assembly of the embodiment of the present invention continues toward second direction displacement, this Two rails drive the clamping piece, make the clamping piece from the schematic diagram of the positioning region of first rail solution tug.

Specific embodiment

As shown in Figure 1, the sliding rail assembly 20 of the embodiment of the present invention includes one first rail 22, one second rail 24, a third rail 26, one the 4th rail 28 and an installation fitting 30.

As shown in Figures 2 to 4, which goes to upper and lower parallel configuration relation, such pass with second rail 24 System, the position of the position and second rail 24 that make first rail 22 have the difference in height.(such as Fig. 4 institute in this embodiment Show), although being located at the top of second rail 24 with first rail 22, however, in alternative embodiments, which can Positioned at the top of first rail 22, do not limit in implementation.The third rail 26 and the 4th rail 28 are respectively fixedly connected to the peace First 44a and second 44b of assembly parts 30.Wherein, which can be displaced with respect to first rail 22, and second rail 24 can be displaced with respect to the 4th rail 28.

First rail 22 includes that one first wall 32a, one second wall 32b and a side wall 34 are connected to the first of first rail 22 Between wall 32a and the second wall 32b, and the first wall 32a of first rail 22, the second wall 32b and side wall 34 define a first passage 36.First rail 22 has an a front 22a and rear portion 22b.

The appearance of the installation fitting 30 is similar to English alphabet " N ", first 44a and second 44b be arranged to top With the relationship of lower part, preferably, including also a horizontal part 44c, and second 44b of first 44a and this substantially hangs down respectively It directly connects two positions of horizontal part 44c and extends respectively towards different directions.For example, first 44a extends one upward Predetermined length, and second 44b extends a predetermined length downward.

The third rail 26 is connected to first 44a of the installation fitting 30 and is located at one first side of the installation fitting 30 L1.The third rail 26 can be displaced by the first passage 36 with respect to first rail 22.Wherein, which includes one first wall 46a, one second wall 46b and a side wall 48 are connected between the first wall 46a of the third rail 26 and the second wall 46b, the third rail 26 side wall 48 is connected to first 44a of the installation fitting 30, and the first wall 46a and 46b, the second wall of the third rail 26 In in the first passage 36.Preferably, the sliding rail assembly 20 also comprising one first help sliding device 50 be movably mounted to this first Between rail 22 and the third rail 26.This first help sliding device 50 include several sliding aiding elements, e.g. one first sliding aiding elements 50a and one Second sliding aiding elements 50b, the first sliding aiding elements 50a and the second sliding aiding elements 50b are the analogs such as ball or idler wheel.This first helps cunning Part 50a is to be supported between the first wall 32a of first rail 22 and the first wall 46a of the third rail 26 and this second is helped Saddle 50b is to be supported between the second wall 32b of first rail 22 and the second wall 46b of the third rail 26.Preferably, this There is first wall 32a of one rail 22 first segment S1 first segment S1 opposite with a second segment S2 to bend, and first rail 22 Second wall 32b has third section S3 third section S3 bending opposite with one the 4th section of S4.According to this configuration, it can be used to increase by the The structural strength or support strength of one rail 22.

4th rail 28 is connected to second 44b of the installation fitting 30 and is located at second side of the installation fitting 30 L2, the first side L1 and second side L2 are opposite side.4th rail 28 includes one first wall 52a, one second wall 52b and side Wall 54 is connected between the first wall 52a of the 4th rail 28 and the second wall 52b.The side wall 54 of 4th rail 28 is connected to the installation Second 44b of accessory 30, and the first wall 52a of the 4th rail 28, the second wall 52b and side wall 54 define a second channel 56. Second rail 24 can be displaced by the second channel 56 with respect to the 4th rail 28.

Second rail 24 includes that one first wall 58a, one second wall 58b and a side wall 60 are connected to the first of second rail 24 Between wall 58a and the second wall 58b, and the first wall 58a and the second wall 58b of second rail 24 are located in the second channel 56.Compared with Goodly, the sliding rail assembly 20 also comprising one second help sliding device 62 be movably mounted to the 4th rail 28 and second rail 24 it Between.Second to help sliding device 62 include several sliding aiding elements, e.g. one first sliding aiding elements 62a and one second sliding aiding elements 62b for this, this One sliding aiding elements 62a and the second sliding aiding elements 62b is the analogs such as ball or idler wheel.The first sliding aiding elements 62a to be supported on this Between first wall 58a of two rails 24 and the first wall 52a of the 4th rail 28 and second sliding aiding elements 62b is to be supported on this Between second wall 58b of the second rail 24 and the second wall 52b of the 4th rail 28.

Preferably, the sliding rail assembly 20 also includes a clamping piece 64 and an elastic component 66 as shown in Fig. 2, Fig. 5 and Fig. 6.It should Clamping piece 64 is movably mounted to the installation fitting 30, with the clamping piece 64 is matched by the opposite installation of a shaft member 67 in this For part 30 is pivotally connected；And there is the elastic component 66 elastic part 65 (this part can also cooperate refering to Fig. 3) to provide elastic force to the card Valve part 64.Furthermore, one of first wall 52a and the second wall 52b of the 4th rail 28 have a hole or a notch 68, the notch 68 penetrates for a blocking part 70 of the clamping piece 64.Preferably, the clamping piece 64 also has another blocking part 71.Wherein, which is located between the blocking part 70 and another blocking part 71.Preferably, the elastic part of the elastic component 66 65 are butted on adjacent another blocking part 71.Preferably, one of first wall 58a and the second wall 58b of second rail 24 have There is a butting section 72.In this embodiment, which there is a space H (e.g. hole, slot or notch) can be used to accommodate The blocking part 70 of the clamping piece 64, and the butting section 72 is a wall surface of space H.

Preferably, as shown in figures 2 and 5, which is also configured at first rail 22 comprising a work package 74.In This, which is the second wall 32b for being connected to first rail 22.The work package 74 with the clamping piece 64 to arrange in pairs or groups.

Preferably, as shown in figures 2 and 5, one of first wall 32a and the second wall 32b of first rail 22 have One positioning region 76, the positioning region 76 are, for example, groove, hole or notch.

Preferably, as shown in figures 2 and 5, the sliding rail assembly 20 also comprising a bolster 38 configuration in first rail 22, in This, configures the front 22a (this part can cooperate refering to Fig. 7) in adjacent first rail 22, and the bolster with the bolster 38 For 38 e.g. soft plastic materials or cushion, but do not limit in implementation.Preferably, the front 22a of adjacent first rail 22 Seat 42 is kept comprising one first block seat 40 and one.The bolster 38 is mounted between first block seat 40 and the holding seat 42, wherein The corresponding barricade 41 in first block seat 40 in the position of the bolster 38, the barricade 41 can be used to provide the bolster 38 against.

Preferably, as shown in figures 2 and 5, which, should also comprising a contact 78 configuration in the third rail 26 Contact 78 with the bolster 38 to arrange in pairs or groups.The contact 78 is that individual member is connected to the third rail 26；Alternatively, the contact Part 78 can be combined with the third rail 26.In this, protruded with the side wall 48 that the contact 78 is the opposite third rail 26 Projection for, but do not limit to.

Preferably, as shown in figures 2 and 5, the front 28a of adjacent 4th rail 28 includes one second block seat 80, and one keeps off Part 82 is movably connected with (such as pivot joint) to the side wall 60 of second rail 24.It is applied to preferably, an elastic force seat 83 provides elastic force The block piece 82, and an operating parts 84 can be used to operate the block piece 82 beat activity.

As shown in figs. 5 and 6, which is in a stowed position R, wherein the blocking part 70 of the clamping piece 64 is logical It crosses the notch 68 of the 4th rail 28 and is butted on the first wall 58a of second rail 24, accumulate the elastic component 66 (elastic part 65) One elastic force.

As shown in Fig. 8 and Fig. 9, when second rail 24 is moved to one first from above-mentioned stowed position R toward a first direction D1 When the P1 of predetermined position, which responds the elastic component 66 (elastic part 65) and discharges the elastic force and can allow the clamping piece 64 Blocking part 70 enters the space H of second rail 24 and contact to the butting section of second rail 24 72, make the installation fitting 30 and The third rail 26 can be synchronously displaced with second rail 24 toward first direction D1 with the 4th rail 28.

As shown in Figure 10 and Figure 11, when second rail 24 is moved to from above-mentioned first predetermined position P1 toward first direction D1 During one second predetermined position P2, which can contact the work package 74.Preferably, the clamping piece 64 and the work One of part 74 includes a guidance part 86, e.g. inclined-plane or cambered surface, is swung with the clamping piece 64 to help guiding.When this When second rail 24 is moved to second predetermined position P2, by the work package 74 to guide 64 beat of clamping piece, one angle, make The elastic component 66 (elastic part 65) accumulates an elastic force.Wherein, the blocking part 70 of the clamping piece 64 no longer contacts second rail 24 Butting section 72, to release the synchronous shift relationship of the installation fitting 30 Yu second rail 24.In other words, which can It is displaced by oneself with respect to first rail 22 toward first direction D1.

As shown in Figure 12 and Figure 13, when the installation fitting 30 and the third rail 26 and opposite first rail of the 4th rail 28 22 when being moved to a predetermined stroke toward first direction D1, such as when being moved to the stroke of a third predetermined position P3, the clip Part 64 responds the elastic component 66 (elastic part 65) and discharges one angle of spring energy beat and pass through another 71 clip of blocking part extremely The positioning region 76 of first rail 22, and the blocking part 70 of the clamping piece 64 is in the notch 68 of the 4th rail 28 at this time, to Prevent opposite first rail 22 of the installation fitting 30 toward a second direction of first direction D1 or opposite first direction D1 Displacement.Preferably, the work package 74 has a lead segment 75, e.g. inclined-plane or cambered surface.The clamping piece 64 is led by contacting this Draw section 75 and helps to be directed to make another 71 clip of blocking part to the positioning region of first rail 22 76.At this point, the installation is matched Part 30 and the third rail 26 and opposite first rail 22 of the 4th rail 28 are in an open state or extension state.

As shown in Figure 14 to Figure 17, when the installation fitting 30 is in above-mentioned open state, which opposite can be somebody's turn to do 4th rail 28 is moved to an open position P4 toward first direction D1, and the block piece 82 a blocking position X1 can contact this second One stopper 81 of block seat 80, to prevent second rail 24 from continuing the displacement toward first direction D1.Wherein, if second rail 24 speed being turned on toward first direction D1 quickly when, which contacts or collides the power of the stopper 81 of second block seat 80 Road can also become larger, and therefore, can contact the bolster 38 by the contact 78, hit to provide buffer function and also have to reduce Hit the effect of sound.In this, which contacts the one end 38a of the bolster 38 by the holding seat 42, makes the buffering The other end 38b of part 38 generates buffer function against the barricade 41 (as shown in figure 17) to first block seat 40, so may be used Protect installation fitting 30 or sliding rail correlated parts.Preferably, the holding seat 42 be movably install to first rail 22, such as The holding seat 42 tool is there are two the elongated slot 27 (or long hole) that support leg 42a puts in first rail 22, and therefore, which can Slightly driven by the contact 78 and push against the bolster 38, make the bolster 38 against the barricade 41 to first block seat 40 and Generate buffer function.However, in alternative embodiments, which also can directly push against the bolster 38 without logical Cross the holding seat 42, purpose is all to provide buffer function and the correlated parts of protecting sliding rail.

As shown in figure 18, when the installation fitting 30 and the third rail 26 and the 4th rail 28 are in above-mentioned open state, Second rail 24 can be moved to open position P4 toward first direction D1 with respect to the 4th rail 28, and user is by applying a power F is measured to the operating parts 84, so that the releasing section 84a of the operating parts 84 is operated the block piece 82 and is no longer on above-mentioned blocking position X1 (such as the block piece 82 is in a non-blocking position X2), enables the block piece 82 no longer contact the stopper 81 of second block seat 80, makes this Second rail 24 can continue the displacement toward first direction D1 and opposite 4th rail 28 is detached from.Alternatively, when second rail 24 is in When open position P4, user can also be folded second rail 24 from open position P4 toward second direction D2.

As shown in Figure 19 and Figure 20, when second rail 24 is moved to one in advance from above-mentioned open position P4 toward second direction D2 When determining stowed position P5, which will drive 64 beat of clamping piece, one angle, at this point, the 66 (elastic part of elastic component 65) elastic force is accumulated, and the no longer clip of another blocking part 71 of the clamping piece 64 is to the positioning region of first rail 22 76.Change speech It, which can also be displaced with respect to first rail 22 toward second direction D2, make second rail 24 and the installation fitting 30 and the third rail 26 and the 4th rail 28 all can opposite first rail 22 be folded toward second direction D2.

According to above explanation, it is known that enhancement effect of the invention is with advantage:

(1) the third rail 26 can be displaced with respect to first rail 22, and second rail 24 can be displaced with respect to the 4th rail 28, In, which goes to upper and lower parallel configuration relation with second rail 24, accordingly, can allow first rail 22 position with should The position of second rail 24 has the difference in height.One of such feature is: being different from two sections of known sliding rail assembly Or two sliding rails more than section, in the case where restricted width, the third rail 26 and the 4th rail 28 of the embodiment of the present invention are connected to this Two different parts (such as top and lower part) of installation fitting 30, to match first rail 22 and second rail 24.Accordingly, make Sliding rail assembly 20 can also form the sliding rail of two sections or more.

(2) the third rail 26 and the 4th rail 28 are connected to two different parts of the installation fitting 30, with match this One rail 22 and second rail 24.Accordingly, facilitate the structural strength or support strength of sliding rail assembly 20.

(3) second rail 24 and the installation fitting 30 and the third rail 26 and the 4th rail 28 are moved to one toward first direction When predetermined position, can synchronously it be displaced by clamping piece 64.

(4) it when second rail 24 is moved to an open position (such as full open position), can be contacted by contact 78 The bolster 38 directly contacts or hits the stopper 81 of the second block seat 80 in blocking position X1 to anti-stop part 82.

(5) clamping piece 64 is in addition to having the function of allowing other than 24 synchronous shift of the installation fitting 30 and the second rail, the clip Part 64, which also can provide, allows 30 clip of installation fitting to first rail 22, to prevent the installation fitting 30 with respect to first rail 22 Toward the displacement of first direction D1 or second direction D2.

Although the present invention is described with reference to current specific embodiment, those of ordinary skill in the art It should be appreciated that above embodiment is intended merely to illustrate the present invention, can also make in the case where no disengaging spirit of that invention Various equivalent change and modification out, therefore, as long as to the variation of above-described embodiment, change in spirit of the invention Type will all be fallen in the range of the claim of this application book.

Claims (20)

1. a kind of sliding rail assembly includes one first rail and one second rail, it is characterised in that:

One installation fitting；

One third rail is permanently connected one first side of the installation fitting；And

One the 4th rail is permanently connected second side of the installation fitting；

Wherein, which can be displaced with respect to first rail, and second rail can be displaced with respect to the 4th rail.

2. sliding rail assembly according to claim 1, which is characterized in that first rail goes to upper and lower parallel with second rail Configuration relation.

3. sliding rail assembly according to claim 1, which is characterized in that the installation fitting includes one first and one second Portion, which is connected to this first, and the 4th rail is connected to this second.

4. sliding rail assembly according to claim 3, which is characterized in that the installation fitting also includes a horizontal part, and should First essentially vertically connect the horizontal part and respectively towards different directions extension with this second.

5. sliding rail assembly according to claim 4, which is characterized in that the first side and second side of the installation fitting are phases It tosses about.

6. sliding rail assembly according to claim 4, which is characterized in that first rail includes one first wall, one second wall And one side wall be connected between the first wall of first rail and the second wall, the first wall of first rail, the second wall and side wall definition One first passage, and the third rail can be displaced by the first passage with respect to first rail.

7. sliding rail assembly according to claim 6, which is characterized in that the third rail includes one first wall, one second wall And one side wall be connected between the first wall of the third rail and the second wall, the side wall of the third rail is connected to the of the installation fitting One, and the first wall of the third rail and the second wall are located in the first passage.

8. sliding rail assembly according to claim 7, which is characterized in that also help sliding device to be movably mounted to comprising one first Between first rail and the third rail, first to help sliding device include several sliding aiding elements for this, to be supported on first rail and this Between first wall of three rails, and to be supported between first rail and the second wall of the third rail.

9. sliding rail assembly according to claim 6, which is characterized in that the first wall of first rail have a first segment with One second segment is bent with respect to the first segment, and the second wall of first rail has the 4th section of a third Duan Yuyi opposite third section Bending.

10. sliding rail assembly according to claim 8, which is characterized in that the 4th rail includes one first wall, one second wall And one side wall be connected between the first wall and the second wall of the 4th rail, the side wall of the 4th rail is connected to the of the installation fitting Two, the first wall, the second wall and the side wall of the 4th rail define a second channel, and second rail can phase by the second channel 4th rail is displaced.

11. sliding rail assembly according to claim 10, which is characterized in that second rail includes one first wall, one second Wall and a side wall are connected between the first wall of second rail and the second wall, and the first wall of second rail and the second wall are located at this In second channel.

12. sliding rail assembly according to claim 11, which is characterized in that also help sliding device to be moveably mounted comprising one second Between the 4th rail and second rail, this second help sliding device include several sliding aiding elements, to be supported on second rail with should Between first wall of the 4th rail, and to be supported between second rail and the second wall of the 4th rail.

13. sliding rail assembly according to claim 12, which is characterized in that also include a clamping piece and an elastic component, the card Valve part is movably mounted to the installation fitting, which provides elastic force to the clamping piece, when second rail is from a stowed position When being moved to first predetermined position toward a first direction, the clamping piece respond the elastic component elastic force is provided and can clip to this Two rails enable the installation fitting to be synchronously displaced with second rail toward the first direction.

14. sliding rail assembly according to claim 13, which is characterized in that the clamping piece is pivotally connected with respect to the installation fitting, One of first wall and the second wall of 4th rail have a notch, which penetrates for a blocking part of the clamping piece, and should One of first wall and the second wall of second rail have a butting section, when second rail is in first predetermined position, the clip The blocking part of part is contacted to the butting section, and second rail is enable to drive the installation fitting toward the first direction by the butting section.

15. sliding rail assembly according to claim 14, which is characterized in that it also is configured at first rail comprising a work package, When second rail is moved to second predetermined position toward the first direction from first predetermined position, guided by the work package The clamping piece makes the blocking part of the clamping piece no longer contact the butting section, to release the same of the installation fitting and second rail Step displacement relationship.

16. sliding rail assembly according to claim 15, which is characterized in that its of the first wall of first rail and the second wall One of have a positioning region, when the installation fitting is moved to a third predetermined position toward the first direction, the clamping piece ring Should elastic component spring energy clip to the positioning region of first rail, to prevent the installation fitting with respect to first rail toward this The displacement of one direction or a second direction.

17. sliding rail assembly according to claim 15, which is characterized in that also configure comprising a bolster in first rail, And one contact configuration in the third rail, be moved to a predetermined stroke toward the first direction when the third rail responds the installation fitting When, which contacts the bolster, to provide buffer function.

18. sliding rail assembly according to claim 17, which is characterized in that a front of adjacent first rail includes one first Block seat, and the sliding rail assembly also includes a holding seat, which is mounted between first block seat and the holding seat.

19. sliding rail assembly according to claim 16, which is characterized in that a front of adjacent 4th rail includes one second Block seat, and a block piece is movably connected with to second rail, when second rail is moved to one toward the first direction with respect to the 4th rail When open position, which can contact a stopper of second block seat in a blocking position, past to prevent second rail from continuing The displacement of the first direction, and an operating parts can be used to operate the block piece and be no longer on the blocking position.

20. sliding rail assembly according to claim 19, which is characterized in that when second rail from the open position toward this second When direction is moved to a predetermined stowed position, which will drive the clamping piece, make the clamping piece no longer clip to this first The positioning region of rail.