WO2017202045A1

WO2017202045A1 - Sliding rail mechanism and refrigerator provided with same

Info

Publication number: WO2017202045A1
Application number: PCT/CN2017/071781
Authority: WO
Inventors: 费斌; 陆日勇; 刘金林; 纪璇
Original assignee: 青岛海尔股份有限公司
Priority date: 2016-05-25
Filing date: 2017-01-20
Publication date: 2017-11-30
Also published as: CN106016941A; CN106016941B

Abstract

A sliding rail mechanism (100) and a refrigerator provided with same, the sliding rail mechanism (100) being used for pulling out and pushing in a drawer in the refrigerator body, each sliding rail assembly (1) having an upper rail (11), a middle rail (12), and a lower rail (13), the sliding rail mechanism (100) also comprising a synchronising mechanism (2), the synchronising mechanism (2) comprising two auxiliary middle rail assemblies (5) matching the two sliding rail assemblies (1), a steering member (21) arranged on the auxiliary middle rail assembly (5), a tensioning member (23), and a fixing member (22) arranged on the two sliding rail assemblies (1), each auxiliary middle rail assembly (5) being positioned on the side of the corresponding sliding rail assembly (1) adjacent to a drawer accommodating space, the tensioning member (23) being wound between the fixing member (22) of the two sliding rail assemblies (1) by means of the steering member (21), such that when the upper rail (11) or the middle rail (12) of a first sliding rail assembly (1a) moves, the tensioning member (23), by means of the fixing member (22), drives the upper rail (11) or the middle rail (12) of a second sliding rail assembly (1b) to be displaced for the same distance in the same direction. By means of adding an auxiliary middle rail assembly (5) and arranging the steering member (21) on said auxiliary middle rail assembly (5), changes to the gap between the upper rail (11) and the lower rail (13) do not affect the normal operation of the steering member (21), thus ensuring the stability of the synchronising mechanism (2).

Description

Slide rail mechanism and refrigerator having the same

The present application claims the priority of the Chinese patent application entitled "Sliding rail mechanism and refrigerator having the same" as the application date is May 20, 2016, the application number is 201610357012.9, the entire contents of which are incorporated herein by reference. .

Technical field

The present invention relates to the field of home appliances, and in particular to a slide rail mechanism and a refrigerator having the same.

Background technique

At present, the three-section slide rails on the market mainly have the following problems in practical applications: First, noise is generated during use: the existing three-section slide rails are run first on the upper rail, and the upper rail is used when the upper rail travel distance reaches the pole. Colliding with the limit device of the middle rail to pull out the middle rail; also adopting the contact device of the middle rail and the lower rail to contact the collision, reaching the pole where the middle rail is pulled; and the limiting device is on the upper rail and the middle rail The noise of "蹬, 蹬" is generated in the contact between the middle rail and the lower rail, which brings high-frequency noise to the user. Secondly, the left and right sway is generated during the use process: the existing three-section slide rail adopts the paired mode in the practical application, and adopts the operation mode described above, and the transmission between the three sections of the slide rail adopts a plurality of steel balls as the inter-rail slide device. Therefore, the three sections of slide rails cannot be locked with each other, and the space for expansion and contraction is reserved in front and rear. In actual use, the force of pulling out and the direction of the running force of the rail are not on the center line of the slide rail, resulting in a pair of three sections. The surface of the device that the slide rail pulls out will appear in tandem and any position after pulling out. When the force of the two sides is different, the phenomenon of shaking left and right will occur, which brings potential safety hazards to the user.

The existing three-section slide rails on the market are affected by cost, standard process control and reliability. The gap between the upper rail and the lower rail is generally 2 mm. In the prior art, as an example of the invention patent application of the application No. CN201410372586.4, a synchronization mechanism can be added to the three-section slide rail to realize synchronous entry and exit of the slide rails on both sides, and the steering member of the synchronization mechanism includes a base. The base must be mounted on the middle rail to achieve the desired simultaneous mute effect, that is, the base needs to be installed in a 2mm gap. In addition, in order to ensure the strength of the base, the size of the connecting portion of the base and the middle rail is not too small, and is preferably set to a height of 1.8 mm, so that the distance between the upper rail and the connecting portion is substantially 0.1 mm, the distance between the lower rail and the connecting portion is also approximately 0.1 mm. In actual application, as the number of use of the three-section slide increases, the inner steel ball and the upper rail, the lower rail and the middle rail are prone to wear, resulting in a gradual decrease in the gap between the upper rail and the lower rail, due to the upper rail and the lower rail. The distance between the rail and the base connecting portion is extremely small. At this time, the reduction of the gap distance easily causes interference between the upper rail and/or the lower rail and the base connecting portion, and even a jam occurs. Therefore, there are problems in the reliability of the three-section slide rail in the prior art.

Summary of the invention

It is an object of the present invention to provide a slide rail mechanism and a refrigerator having the same.

To achieve one of the above objects, an embodiment of the present invention provides a slide rail mechanism for pulling or pushing a drawer in a cabinet, including a first slide rail assembly and a second rail assembly, each sliding The rail assembly has an upper rail, a middle rail and a lower rail that are slidably engaged with each other, and the rail mechanism further includes a synchronization mechanism that keeps the first rail assembly and the second rail assembly synchronized, the synchronization mechanism includes two sets of slide rails Two sets of auxiliary middle rail assemblies mating with the assembly, a steering member disposed on the auxiliary middle rail assembly, a tensioning member, and fixing members disposed on the two sets of rail assemblies, each of the auxiliary middle rail assemblies being located in the corresponding The slide rail assembly is adjacent to a side of the drawer receiving space, and the tensioning member is disposed between the fixing members of the two rail assemblies through the steering member, so that when the upper rail or the middle rail of the first rail assembly moves The tensioning member drives the upper rail or the middle rail of the second rail assembly to move the same distance in the same direction by the fixing member.

As a further improvement of an embodiment of the present invention, each of the auxiliary middle rail assemblies includes a limiting seat and a screw, the screw is movably disposed in the limiting seat, and the screw connects the steering And when the upper rail or the middle rail moves, the limiting seat remains stationary, and the lead screw and the steering member move in the same direction with respect to the limiting seat.

As a further improvement of an embodiment of the present invention, the synchronization mechanism further includes a support plate, the support plate is fixedly connected to the lower rail or the box body, and the limiting seat is fixed on the support plate.

As a further improvement of an embodiment of the present invention, the support plate is formed with a limiting groove that cooperates with the screw rod, and the limiting groove limits the moving direction of the screw rod when the screw rod moves.

As a further improvement of an embodiment of the present invention, the limiting seat includes a first insertion end and a second insertion end which are disposed apart from each other, and the screw rod is limited to be located in the first insertion end and the second insertion end .

As a further improvement of an embodiment of the invention, the central axis of the lead screw is parallel to the tensioning member.

According to a further improvement of an embodiment of the present invention, the steering member includes a base and a wheel disposed in the base, the tensioning member is disposed around the wheel, the screw and the base Fixed to each other.

As a further improvement of an embodiment of the present invention, the steering member includes a front steering member and a rear steering member, the front steering member and the The rear steering members are respectively located at the front end and the rear end of the screw rod, and the limiting seat is located at an intermediate portion of the front steering member and the rear steering member.

As a further improvement of an embodiment of the present invention, the fixing member is located on a side of the sliding rail assembly near the drawer receiving space, and the fixing member comprises a first upper fixing member and a first fixing member disposed on the first sliding rail assembly a fixing member, a second upper fixing member disposed on the second rail assembly; the steering member includes a first front steering member and a first rear steering disposed on the auxiliary middle rail assembly of the first rail assembly a second front steering member and a second rear steering member disposed on the auxiliary middle rail assembly of the second rail assembly; the tensioning member includes the first front steering member and the first lower fixing member a first tensioning member of the upper fixing member passes through the first rear steering member, the second rear steering member and the second front steering member in sequence and connects the first upper fixing member and the second tensioning member of the second upper fixing member, And passing through the second rear steering member and the first rear steering member in sequence and connecting the second upper fixing member and the third tensioning member of the first lower fixing member.

In order to achieve one of the above objects, an embodiment of the present invention provides a refrigerator including the slide rail mechanism as described above.

Compared with the prior art, the invention has the beneficial effects that the invention adds the auxiliary middle rail assembly and the steering member is disposed on the auxiliary middle rail assembly, so that the change of the gap between the upper rail and the lower rail does not affect The normal operation of the steering member ensures the stability of the synchronization mechanism.

DRAWINGS

1 is a schematic view showing an initial state of a slide rail mechanism according to a first embodiment of the present invention;

Figure 2 is an exploded view of the slide rail mechanism of the first embodiment of the present invention;

3 is a schematic view showing a sliding state of a slide rail mechanism according to a first embodiment of the present invention;

4 is a schematic structural view of an auxiliary center rail assembly according to a first embodiment of the present invention;

Figure 5 is an exploded view of the auxiliary center rail assembly of the first embodiment of the present invention;

Figure 6 is a schematic view showing the distribution of fixing members according to a specific example of the present invention;

Figure 7 is a schematic view showing the distribution of fixing members according to another specific example of the present invention;

8 is a schematic view showing an initial state of a slide rail mechanism according to a second embodiment of the present invention;

Figure 9 is an exploded view of the slide rail mechanism of the second embodiment of the present invention;

Figure 10 is a schematic view showing the sliding state of the slide rail mechanism according to the second embodiment of the present invention;

Figure 11 is a schematic view showing the structure of an auxiliary center rail assembly according to a second embodiment of the present invention;

Figure 12 is an exploded view of the auxiliary center rail assembly of the second embodiment of the present invention;

Figure 13 is a schematic view showing an initial state of a slide rail mechanism according to a third embodiment of the present invention;

Figure 14 is an exploded view of the slide rail mechanism of the third embodiment of the present invention;

Figure 15 is a schematic view showing the sliding state of the slide rail mechanism according to the third embodiment of the present invention;

Figure 16 is a schematic view showing the structure of an auxiliary center rail assembly according to a third embodiment of the present invention;

Figure 17 is an exploded view of the auxiliary center rail assembly of the third embodiment of the present invention;

18 and FIG. 19 are schematic diagrams of a slide rail mechanism with a motor assembly according to an embodiment of the present invention;

20 and 21 are schematic views of a slide rail mechanism with a motor assembly according to another embodiment of the present invention;

Figure 22 is a longitudinal sectional view of a rear steering member according to an embodiment of the present invention;

Figure 23 is a transverse cross-sectional view of a rear steering member according to an embodiment of the present invention.

detailed description

The invention will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, the embodiments are not intended to limit the invention, and the structural, method, or functional changes made by those skilled in the art in accordance with the embodiments are included in the scope of the present invention.

As shown in Figure 1, the present invention provides a slide rail mechanism 100 for pulling or advancing a drawer (not labeled) within a cabinet, including two sets of slide rail assemblies 1 disposed opposite each other. Of course, the slide rail mechanism 100 can also be used for drawing, expanding or contracting of other structures. It should be noted that the two sets of the slide rail assemblies 1 can be disposed on the left and the right. In other embodiments, the two sets of the slide rail assemblies 1 can also be disposed above and below. In the present invention, the two sets of the slide rail assemblies 1 are disposed as an example.

In addition, terms such as "upper", "above", "lower", "lower", "left", "right", and the like, used herein, are used to describe the relative position of the space for the purpose of illustration. The relationship of one unit or feature to another unit or feature. Terms of spatial relative position may be intended to include different orientations of the device in use or operation other than the orientation shown in the figures. For example, elements that are described as "below" or "beneath" other elements or features are "above" other elements or features. Thus, the exemplary term "lower" can encompass both the above and the The device may be oriented (rotated 90 degrees or other orientation) in other ways and the spatially related descriptors used herein interpreted accordingly.

Referring to Figures 1 to 3, the slide rail assembly 1 includes a first rail assembly 1a and a second rail assembly 1b, each rail assembly 1 having an upper rail 11, a middle rail 12 and a lower rail 13 that are slidably engaged with each other. That is, the first rail assembly 1a has a first upper rail 11a, a first middle rail 12a and a first lower rail 13a that cooperate with each other, and the second rail assembly 1b has a second upper rail 11b and a second that cooperate with each other. The middle rail 12b and the second lower rail 13b. The lower rail 13 is fixed to the box body by an angle iron 6, the upper rail 11 is fixed on the drawer, and the middle rail 12 is disposed between the upper rail 11 and the lower rail 13; The lower rail 13 is fixed, and the middle rail 12 and the upper rail 11 can be pulled out or pushed forward relative to the lower rail 13, thereby driving the drawer to pull out or propel the casing, that is, the lower rail 13 is an orbital. The middle rail 12 and the upper rail 11 are moving rails.

In the present embodiment, the slide rail assembly 1 further includes an upper row of balls 14 disposed between the upper rail 11 and the middle rail 12, and is disposed on the middle rail 12 and the lower rail 13 The lower lower row of balls 15 can reduce friction and save labor during the process of pulling or advancing the upper rail 11 or the middle rail 12 relative to the lower rail 13. The upper row of balls 14 are located in an opening (not shown) of the upper rail 11 and the lower row of balls 15 are located in an opening (not shown) of the lower rail 13. Further, the upper row of balls 14 includes a base body (not labeled) that is fastened to the upper side of the middle rail 12 and a plurality of balls (not labeled) that are disposed on the base body, and the lower row of balls 15 includes a middle rail. 12 underside substrate (not shown) and a number of balls (not labeled) provided on the substrate.

In an embodiment of the invention, the slide rail mechanism 100 further includes a synchronizing mechanism 2 that keeps the first rail assembly 1a and the second rail assembly 1b in synchronous movement, and the synchronizing mechanism 2 includes mating with the two sets of rail assemblies 1 Two sets of auxiliary middle rail assemblies 5, a steering member 21 disposed on the auxiliary middle rail assembly 5, a tensioning member 23, and fixing members 22 provided on the two sets of rail assemblies, the tensioning members 23 passing through the steering member 21 When the upper rail 11 or the middle rail 12 of the first rail assembly 1a is moved between the fixing members 22 of the two rail assemblies 1 , the tensioning member 23 drives the second rail assembly through the fixing members 22 . The upper rail 11 or the middle rail 12 of 1b is displaced by the same distance in the same direction.

Here, on the basis of the prior art three-section slide rail, the auxiliary middle rail assembly 5 is added, and the steering member 21 of the synchronizing mechanism 2 is disposed on the auxiliary middle rail assembly 5, and the steering member 21 and the three-section slide rail are not mutually The contact, that is to say, the movement trajectory of the steering member 21 and the tensioning member 23 and the sliding trajectory of the three-section slide rail do not overlap each other at this time, even if the gap between the upper rail 11 and the lower rail 13 is reduced due to wear, The normal operation of the steering member 21 in the synchronizing mechanism 2 is affected, and the problem that the steering member 21 interferes with the upper rail 11 and/or the lower rail 13 in the prior art can be effectively solved. In addition, the present embodiment can utilize the three-section slide rail structure that is common in the market, and only needs to cooperate with the low-cost auxiliary middle rail component, thereby not only simplifying the manufacturing difficulty, but also greatly reducing the production cost.

In the present embodiment, referring to FIG. 4 and FIG. 5, each of the auxiliary middle rail assemblies 5 includes at least one limiting seat 51 and at least one screw rod 52. The screw rod 52 is movably disposed at the limit. In the seat 51, the lead screw 52 is connected to the steering member 21, and when the upper rail 11 or the middle rail 12 moves, the limiting seat 51 remains stationary, the screw rod 52 and the steering member 21 is moved in the same direction with respect to the limit seat 51. Here, the steering member 21 includes a base 213 (213') and a wheel (not labeled) disposed in the base 213, the tensioning member 23 is wound around the wheel, the screw 52 The base 213 (213') is fixed to each other, and the screw rod 52 and the base 213 (213') can be fixed to each other by a bolt 53 and/or a bolt member 54, the steering member 21, the screw rod 52 and the three-section slide rail. Do not touch between. It should be noted that the screw rod 52 of the present embodiment has a certain strength, and is not easily deformed. The steering member 21 is connected by the screw rod 52, and the movement of the steering member 21 can be effectively guided. In addition, the screw rod is supported by the limiting seat 51. The limit of 52 can effectively control the moving direction of the screw rod 52 such that the moving direction of the screw rod 52 is consistent with the moving direction of the upper rail 11 and/or the middle rail 12, that is, the central axis of the screw rod 52. Parallel to the tensioning member 23 and in the same vertical plane.

In this embodiment, the limiting seat 51 can be fixed on the lower rail 13 , but not limited thereto. For example, a supporting plate 55 can be provided, and the limiting seat 51 can be fixed on the supporting plate 55 to support The plate 55 can be coupled to the lower rail 13 or the box or angle iron 6. In one embodiment, the support plate 55 can be integrally formed with the angle iron 6 that secures the lower rail 13. In order to further effectively control the moving direction of the screw rod 52, a limiting groove 56 may be formed on the supporting plate 55, the lower rail 13 or the limiting seat 51. As shown in FIG. 5, a forming surface is formed on the upper surface of the supporting plate 55. The horizontally extending limiting groove 56, the limiting groove 56 and the screw rod 52 cooperate with each other, and the limiting groove 56 limits the moving direction of the screw rod 52 when the screw rod 52 moves. The limiting seat 51 includes a first insertion end 511 and a second insertion end 512 which are disposed apart from each other. The screw rod 52 is limited to the first insertion end 511 and the second insertion end 512. The two ends separated from each other can effectively improve the limit effect of the limit seat 51 on the screw rod 52, and at the same time, ensure the smoothness of the movement of the screw rod 52.

In the present embodiment, the steering member 21 includes a front steering member 211 and a rear steering member 212. The front steering member 211 is located at a front end of the screw rod 52, and the rear steering member 212 is located at the screw rod 52. At the rear end, the limiting seat 51 is located at an intermediate portion of the front steering member 211 and the rear steering member 212. Here, when one auxiliary middle rail assembly 5 has only one screw rod 52, the front steering member 211 and the rear steering member 212 are respectively located at the front end and the rear end of the same screw rod 52, and the screw rod 52 drives the front steering member 211 and the rear steering. The pieces 212 move together; when one auxiliary middle rail assembly 5 has more than one screw 52, for example, when the auxiliary middle rail assembly 5 has two screw rods 52, the front steering member 211 is located at the front end of one of the screw rods 52, The diverting member 212 is located at the rear end of the other screw 52 therein. It should be noted that the limiting seat 51 is located at an intermediate portion of the front steering member 211 and the rear steering member 212, and the limiting seat 51 is located at a movement path of the rear steering member 212. In order to ensure that the rear steering member 212 can smoothly move forward, the limiting seat 51 is preferably disposed near the front end region of the three-section rail.

In the present embodiment, the front steering member 211 includes a first front steering member 211a and a second front steering member 211b respectively disposed on the first rail assembly 1a and the second rail assembly 1b, and the rear steering member 212 The first rear steering member 212a and the second rear steering member 212b are respectively disposed on the first rail assembly 1a and the second rail assembly 1b.

6, the front steering member 211 is disposed such that the tensioning member 23 is divided into an upper tensioning member 231 and a lower layer tensioning member 232 after passing through the front steering member 211, and the rear steering member 212 includes the The upper layer tensioning member 231 and the lower layer tensioning member 232 cooperate with the upper steering member 2121 and the lower steering member 2122. The upper layer tensioning member 231 and the lower layer tensioning member 232 pass through the upper steering member 2121 of one of the rail assemblies 1. The lower steering member 2122 extends rearwardly to the lower steering member 2122 and the upper steering member 2121 fixed to the other rail assembly 1, respectively, and is respectively located on the upper rail 11 and the lower rail 13 of the two sets of the slide rail assemblies 1 in a cross-linking manner.

The front steering member 211 is a wheel (not labeled) for the tensioning member 23 to be vertically mounted, and the upper steering member 2121 and the lower steering member 2122 are roulettes for the tensioning member 23 to bypass. (not shown), which is mounted horizontally, the highest position of the tensioning member 23 on the front steering member 211 and the position of the tensioning member 23 on the upper steering member 2121. The upper tensioning member 231 is parallel to the screw rod 52; the tensioning member 23 is located at a lowest position of the front steering member 211 and a position parallel to the screw rod 52 at a position of the lower steering member 2122. So that the lower tension member 232 is parallel to the screw rod 52; thereby making the slide rail mechanism 100 run smoothly.

The fixing member 22 includes at least two upper fixing members 221 respectively disposed on the two upper rails 11 and at least one lower fixing member 222 disposed on the at least one lower rail 13 .

During the opening, closing and opening or closing of the slide rail assembly 1, the upper fixing member 221 is always located between the rear end of the upper rail 11 and the front end of the middle rail 12, and the lower fixing member 222 is always located at the Between the front end of the lower rail 13 and the rear end of the middle rail 12, the three rails are prevented from being separated from each other, the wear of the tensioning member 23 at the steering member 21 and the fixing member 22 is reduced, and the service life is extended without affecting the sliding rail. The mechanism 100 can pull the drawer out of the effective length of the case.

When the rail assembly 1 is fully opened, the rear portion of the upper rail 11 partially overlaps the front portion of the middle rail 12, while the rear portion of the middle rail 12 and the front portion of the lower rail 13 have portions. The overlap is to enhance the stability of the slide assembly 1 when it is in an open state, preventing the drawer from shaking. Preferably, the distance of the upper fixing member 221 from the rear end of the upper rail 11 is half of the distance from the rear end of the upper rail 11 to the front end of the middle rail 12 when the upper rail 11 and the middle rail 12 are fully opened; the lower fixing The distance of the piece 222 from the front end of the lower rail 13 is half of the distance from the rear end of the lower rail 13 to the front end of the middle rail 12 when the lower rail 13 and the middle rail 12 are fully opened, and does not affect the drawer mechanism 100. The effective length of the box is pulled out, and the steering member 21 and the fixing member 22 can be prevented from colliding or rubbing, and the service life is prolonged. When the slide rail assembly 1 is fully opened, assuming that the distance from the rear end of the upper rail 11 to the front end of the middle rail 12 is L, the distance of the upper fixing member 221 from the rear end of the upper rail 11 is L/2; the rear end of the middle rail 12 to the lower rail The distance between the front end of the 13 is M, and the distance between the lower fixing member 222 and the front end of the lower rail 13 is M/2.

The tensioning member 23 is wound between the fixing members 22 of the two rail assemblies 1 through the front steering member 211 and the rear steering member 212 and forms a circuit, that is, the tensioning member 23 passes through the front steering member 211 and the rear steering member The member 212 changes direction to connect the upper fixing member 221 and the lower fixing member 222. In the present invention, the forming of the circuit means that the two portions of the front side and the rear side of the tensioning member 23 are closely connected by the fixing member 22 without a break point; the tensioning member 23 is located at the same fixing member. The two portions of the front side and the rear side are fixed to the same rail, and there is no steering member 21 between the two fixing points. Of course, in the specific embodiment of the present invention, the loop may not be formed according to specific conditions.

In a specific example of the present invention, referring to FIG. 6, the fixing member 22 includes a first upper fixing member 221a and a first lower fixing member 222a disposed on the first sliding rail assembly 1a, and is disposed on the second sliding rail assembly 1b. The upper upper fixing member 221b is divided into three sections by the three fixing members 22: the first front steering member 211a and the first lower fixing member 222a and the first upper fixing member 221a are connected. a tightening member sequentially passes through the first rear steering member 212a, the second rear steering member 212b and the second front steering member 211b and connects the second tensioning members of the first upper fixing member 221a and the second upper fixing member 221b, in turn The second rearward deflecting member 212b and the first rear deflecting member 212a are connected to the second upper fixing member 221b and the third tensioning member of the first lower fixing member 222a. The first tensioning member, the second tensioning member and the third tensioning member are coupled to each other by the fixing member 22 to form a closed loop.

When the drawer is pulled, when the first upper rail 11a is pulled outward by the distance a, the upper tension member 231 of the first rail assembly 1a passes through the first front steering member 211a and the first rear steering member 212a to the lower layer. The tensioning member 232 transmits the distance a, and the distance between the first front steering member 211a and the second rear steering member 212b of the tensioning member 23 is fixed, so the lower tensioning member 232 of the second sliding rail assembly 1b The second front steering member 211b, the second rear steering member 212b and the first rear steering member 212a are driven to the upper tensioning member 231 of the first rail assembly 1a by a distance a; and because the second front steering member 211b and the second rear portion The distance between the deflecting members 212b is fixed, so that the upper tensioning member 231 of the second rail assembly 1b is driven by the lower layer tensioning member 232 by a distance a while the lower layer tensioning member 232 of the first rail assembly 1a passes the first The front steering member 211a, the first rear steering member 212a and the second front steering member 211b, and the second rear steering member 212b are transmitted to the upper tension member 231 of the second rail assembly 1b. Moving distance a.

The upper tensioning members 231 of the first rail assembly 1a are respectively fixed to the first upper rail 11a and the first lower rail 13a by the first upper fixing member 221a and the first lower fixing member 222a; the upper layer of the second sliding rail assembly 1b The tensioning member 231 is fixed to the second upper rail 11b by the second upper fixing member 221b. At the same time, the lengths of the first tensioning member, the second tensioning member and the third tensioning member are fixed. When the drawer is pulled, when the upper rail 11 of the first rail assembly 1a is pulled outward by the distance a, the upper tensioning member 231 of the first rail assembly 1a is driven by the lower layer tensioning member 232 by a distance, The lower tensioning member 232 of the second rail assembly 1b is driven to the upper layer tensioning member 231 of the first rail assembly 1a by a distance a, and the upper layer tensioning member 231 of the second rail assembly 1b is moved to the lower layer of the second rail assembly 1b. The clamping member 232 transmits the distance a, so that the second upper rail 11b also pulls out the distance a. At the same time, the lower tensioning member 232 of the first rail assembly 1a is transmitted to the upper tensioning member 231 of the second rail assembly 1b by a distance a. Since the length of the third tensioning member is fixed, the second rear steering member 212b Pull forward.

When the upper rail 11 of the second rail assembly 1b is forced outwardly by the distance a, the length of the third tensioning member is fixed, and the third tensioning member passes the second rear steering member 212b and the first rear member. The steering member 212a is driven to the upper rail 11 of the second rail assembly 1b by a distance a, so that the first rear steering member 212a of the first rail assembly 1a is pulled forward; and because the length of the first tension member is fixed Therefore, the upper rail 11 of the first rail assembly 1a is also pulled outward by a distance a. In addition, since the upper rail 11 and the middle rail 12 are in a sliding connection, the middle rail 12 and the lower rail 13 are also slidably connected, and the movement of the upper rail 11 drives the middle rail 12 to move together to increase the pull-out distance.

In another specific example of the present invention, referring to FIG. 7, the same components as the previous specific example are given the same reference numerals, and the fixing member 22 includes a first upper fixing member 221a and a first portion provided on the first rail assembly 1a. The fixing member 222a, the second upper fixing member 221b and the second lower fixing member 222b are disposed on the second rail assembly 1b.

The tensioning member 23 includes a first tensioning member that passes through the first front steering member 211a and connects the first lower fixing member 222a and the first upper fixing member 221a, and sequentially passes through the first rear steering member 212a and the second rear steering member. 212b and connecting the second tensioning members of the first upper fixing member 221a and the second lower fixing member 222b, passing through the second front steering member 212a and connected to the third lower fixing member 222b and the third upper fixing member 221b The pressing member passes through the second rear diverting member 212b and the first rear diverting member 212a in sequence and connects the second upper fixing member 221b and the fourth tensioning member of the first lower fixing member 222a. The first tensioning member, the second tensioning member, the third tensioning member and the fourth tensioning member are connected to each other by the fixing member 22 to form a closed loop. For other descriptions of this example, refer to the previous example, and details are not described herein again.

In the following, several specific embodiments of the auxiliary middle rail assembly 5 of the present invention are described, and the same structures are given the same reference numerals.

As shown in FIGS. 1-7, in the first embodiment of the present invention, the slide rail mechanism 100 includes a synchronizing mechanism 2 that causes the first rail assembly 1a and the second rail assembly 1b to maintain synchronous movement, and the synchronizing mechanism 2 includes Two sets of auxiliary middle rail assemblies 5a cooperating with the two sets of slide rail assemblies 1, a steering member 21 provided on the auxiliary middle rail assembly 5a, a tensioning member 23, and fixing members 22 provided on the two sets of slide rail assemblies, each The auxiliary middle rail assembly 5a is located on a side of the corresponding rail assembly 1 near the drawer receiving space, and the tensioning member 23 is wound between the fixing members 22 of the two rail assemblies 1 through the steering member 21. When the upper rail 11 or the middle rail 12 of the first rail assembly 1a is moved, the tensioning member 23 drives the upper rail 11 or the middle rail 12 of the second rail assembly 1b to be displaced by the same distance by the fixing member 22. That is, in the present embodiment, the auxiliary middle rail assembly 5a is located inside the slide rail assembly 1.

Here, on the basis of the prior art three-section slide rail, the auxiliary middle rail assembly 5a is added, and the steering member 21 of the synchronizing mechanism 2 is disposed on the auxiliary middle rail assembly 5a, and the steering member 21 and the three-section slide rail are not mutually The contact, that is to say, the movement trajectory of the steering member 21 and the tensioning member 23 and the sliding trajectory of the three-section slide rail do not overlap each other at this time, even if the gap between the upper rail 11 and the lower rail 13 is reduced due to wear, The normal operation of the steering member 21 in the synchronizing mechanism 2 is affected, and the problem that the steering member 21 interferes with the upper rail 11 and/or the lower rail 13 in the prior art can be effectively solved. In addition, the present embodiment can utilize the three-section slide rail structure that is common in the market, and only needs to cooperate with the low-cost auxiliary middle rail component, thereby not only simplifying the manufacturing difficulty, but also greatly reducing the production cost.

Each of the auxiliary middle rail assemblies 5a includes a limiting seat 51a and a lead screw 52a. The lead screw 52a is movably disposed in the limiting seat 51a, and the lead screw 52a is connected to the steering member 21, When the upper rail 11 or the middle rail 12 moves, the limiting seat 51a remains stationary, and the screw rod 52a and the steering member 21 move together in the same direction with respect to the limiting seat 51a. Here, the limiting seat 51a has a "concave" shape, and the bottom surface of the limiting seat 51a and the supporting plate 55a are fixed by screws (not shown), and the limiting seat 51a further includes a first insertion end 511a and a portion protruding from the bottom surface. The two insertion ends 512a, the openings of the first insertion end 511a and the second insertion end 512a extend in the horizontal direction, and the screw rod 52a is limited to the first insertion end 511a and the second insertion end 512a. The support plate 55a is a horizontally disposed hard plate, and the support plate 55a and the angle iron 6 or the lower rail 11 can be described by screws. Of course, the support plate 55a can also be integrally formed with the angle iron 6 or the lower rail 11. In this embodiment, the moving direction of the screw rod 52a can be effectively controlled by the setting of the limiting seat 51a, so that the moving direction of the screw rod 52a is consistent with the moving direction of the upper rail 11 and/or the middle rail 12, that is, the wire The central axis of the rod 52a is parallel to the tensioning member 23 and in the same vertical plane.

In the embodiment, the upper surface of the support plate 55a is further formed with a limiting groove 56a corresponding to the screw rod 52a to enhance the pair. Control of the direction of movement of the screw shaft 52a.

In the present embodiment, the front steering member 211 is located at the front end of the screw rod 52a, the rear steering member 212 is located at the rear end of the screw rod 52a, and the front steering member 211 includes the first rail assembly 1a and the second sliding rail, respectively. a first front steering member 211a and a second front steering member 211b of the assembly 1b, the rear steering member 212 includes a first rear steering member 212a and a second portion respectively disposed on the first rail assembly 1a and the second rail assembly 1b Rear steering member 212b. The fixing member 22 is located on the side of the slide rail assembly 1 near the drawer receiving space, that is, the fixing member 22 is located inside the rail assembly 1 , and the fixing member 22 includes the first portion disposed on the first rail assembly 1 a. The fixing member 221a and the first lower fixing member 222a, and the second upper fixing member 221b disposed on the second rail assembly 1b, the tensioning member 23 is divided into three segments by three fixing members 22: after the first front steering The first tensioning member of the first lower fixing member 222a and the first upper fixing member 221a is connected to the first rear steering member 212a, the second rear steering member 212b and the second front steering member 211b and connected to the first member. The second tensioning member of the upper fixing member 221a and the second upper fixing member 221b sequentially passes through the second rear turning member 212b and the first rear turning member 212a and connects the second upper fixing member 221b and the first lower fixing member 222a. Three pieces of tension. The first tensioning member, the second tensioning member and the third tensioning member are coupled to each other by the fixing member 22 to form a closed loop. Of course, the fixing member 22 may further include a first upper fixing member 221a and a first lower fixing member 222a disposed on the first rail assembly 1a, and a second upper fixing member 221b disposed on the second rail assembly 1b. And the second lower fixing member 222b. At this time, the tensioning member 23 includes a first tensioning member, a second tensioning member, a third tensioning member and a fourth tensioning member. For other descriptions of the present embodiment, reference may be made to the descriptions of other parts of the specification, and details are not described herein again.

As shown in FIGS. 8-12, in the second embodiment of the present invention, the slide rail mechanism 100 further includes a synchronizing mechanism 2 that causes the first rail assembly 1a and the second rail assembly 1b to move in synchronization, and the synchronizing mechanism 2 The invention comprises two sets of auxiliary middle rail assemblies 5b cooperating with the two sets of slide rail assemblies 1, a steering member 21 disposed on the auxiliary middle rail assembly 5b, a tensioning member 23, and fixing members 22 disposed on the two sets of the slide rail assemblies, each The auxiliary middle rail assembly 5b includes two auxiliary middle rails respectively located on the two sides of the corresponding slide rail assembly 1 near and away from the drawer receiving space, and the tensioning member 23 is wound around the two through the steering member 21. When the upper rail 11 or the middle rail 12 of the first rail assembly 1a moves between the fixing members 22 of the rail assembly 1, the tensioning member 23 drives the upper rail 11 of the second rail assembly 1b through the fixing member 22. Or the middle rail 12 is displaced the same distance in the same direction. That is, in the present embodiment, each of the auxiliary center rail assemblies 5b is located inside and outside the corresponding rail assembly 1.

Here, on the basis of the prior art three-section slide rail, the auxiliary middle rail assembly 5b is added, and the steering member 21 of the synchronization mechanism 2 is disposed on the auxiliary middle rail assembly 5b, and the steering member 21 and the three-section slide rail are not mutually The contact, that is to say, the movement trajectory of the steering member 21 and the tensioning member 23 and the sliding trajectory of the three-section slide rail do not overlap each other at this time, even if the gap between the upper rail 11 and the lower rail 13 is reduced due to wear, The normal operation of the steering member 21 in the synchronizing mechanism 2 is affected, and the problem that the steering member 21 interferes with the upper rail 11 and/or the lower rail 13 in the prior art can be effectively solved. In addition, the present embodiment can utilize the three-section slide rail structure that is common in the market, and only needs to cooperate with the low-cost auxiliary middle rail component, thereby not only simplifying the manufacturing difficulty, but also greatly reducing the production cost. It should be noted that, in comparison with the first embodiment, the present embodiment splits each auxiliary middle rail assembly 5b into two auxiliary middle rails located inside and outside the corresponding rail assembly 1, and a part of the steering member 21 and The tensioning member 23 is transferred to the middle portion of the slide rail assembly 1 and the inner casing of the tank, so that the space occupied by the auxiliary middle rail assembly 5b on the side of the slide rail assembly 1 close to the drawer receiving space can be effectively reduced, thereby correspondingly increasing Large drawer volume.

Each auxiliary middle rail includes a limiting seat 51b (51b') and a screw rod 52b (52b'), wherein the screw rod 52b is movably disposed in the limiting seat 51b, and the screw rod 52b is connected In the steering member 21, when the upper rail 11 or the middle rail 12 moves, the limiting seat 51b remains stationary, and the screw rod 52b and the steering member 21 are common to the limiting seat 51b. mobile. Here, the limiting seat 51b has a "concave" shape, and the bottom surfaces of the two limiting

seats

51b, 51b' respectively abut against the corresponding lower rails 11 on both side surfaces close to and away from the drawer receiving space. The limiting seat 51b further includes a first insertion end 511b and a second insertion end 512b protruding from the bottom surface. The openings of the first insertion end 511b and the second insertion end 512b extend in a horizontal direction, and the screw rod 52b is limited to the first The insertion end 511b and the second insertion end 512b. In this embodiment, the moving direction of the screw rod 52b can be effectively controlled by the setting of the limiting seat 51b, so that the moving direction of the screw rod 52b is consistent with the moving direction of the upper rail 11 and/or the middle rail 12, that is, the wire The central axis of the rod 52b is parallel to the tensioning member 23 and in the same vertical plane.

In the present embodiment, the front steering member 211 is located at the front end of the screw rod 52b', and the rear steering member 212 is located at the rear end of the screw rod 52b, that is, each auxiliary middle rail assembly 5b has two screws (inside) The lead screw 52b and the outer lead screw 52b') are located at the front end of the outer lead screw 52b', and the rear diverting member 212 is located at the rear end of the inner lead screw 52b. The front steering member 211 includes a first front steering member 211a and a second front steering member 211b respectively disposed on the first rail assembly 1a and the second rail assembly 1b, and the rear steering member 212 includes first The rail assembly 1a, the first rear steering member 212a and the second rear steering member 212b of the second rail assembly 1b. The fixing member includes an inner fixing member 22 and an outer fixing member 22 ′ respectively located on the sides of the corresponding sliding rail assembly 1 adjacent to and away from the drawer receiving space, and the inner fixing member 22 is disposed on the first sliding rail assembly. The inner first upper fixing member 221a and the inner first lower fixing member 222a on the 1a, the inner second upper fixing member 221b and the inner second lower fixing member 222b disposed on the second rail assembly 1b; the outer fixing member 22' includes The outer first upper fixing member 221a' and the outer first lower fixing member 222a' on the first rail assembly 1a, the outer second upper fixing member 221b' disposed on the second rail assembly 1b, and the outer second lower portion a fixing member 222b'; the tensioning member 23 includes a first tensioning member that passes through the first front steering member 211a and connects the outer first lower fixing member 222a' and the outer first upper fixing member 221a', and sequentially passes through the first The steering member 212a and the second rear steering member 212b are connected to the second tensioning member of the inner first lower fixing member 222a and the inner second upper fixing member 221b, and sequentially pass through the first rear turning member 212a and the second rear steering member 212b. a third tensioning member connecting the inner first upper fixing member 221a and the inner second lower fixing member 222b passes through the second front steering member 211b and connects the outer second lower fixing member 222b' and the outer second upper fixing member 221b' The fourth piece of tension. At this time, the second tensioning member and the third tensioning member are located inside the first rail assembly 1a and the second rail assembly 1b, and the first tensioning member and the fourth tensioning member are located on the first rail assembly 1a and The outer side of the second rail assembly 1b. For other descriptions of the present embodiment, reference may be made to the descriptions of other parts of the specification, and details are not described herein again.

As shown in FIGS. 13-17, in the third embodiment of the present invention, the slide rail mechanism 100 further includes a synchronizing mechanism 2 that causes the first rail assembly 1a and the second rail assembly 1b to move in synchronization, and the synchronizing mechanism 2 includes two sets of auxiliary middle rail assemblies 5c that cooperate with the two sets of rail assemblies 1, a steering member 21 provided on the auxiliary middle rail assembly 5c, a tensioning member 23, and fixing members 22 provided in the two sets of the slide rail assemblies 1 Each of the auxiliary middle rail assemblies 5c is located on a side of the corresponding rail assembly 1 away from the upper rail 11, and the tensioning member 23 is wound around the fixing members 22 of the two rail assemblies 1 by the steering member 21. When the upper rail 11 or the middle rail 12 of the first rail assembly 1a is moved, the tensioning member 23 drives the upper rail 11 or the middle rail 12 of the second rail assembly 1b to move in the same direction by the fixing member 22. distance. That is, in the present embodiment, the auxiliary middle rail assembly 5c is located on the lower side of the slide rail assembly 1. It should be noted that the slide rail mechanism 100 of the present embodiment is suitable for the case where the slide rail mechanism is located at the side of the drawer, and at this time, the lower side of the slide rail assembly 1 has a remaining space to accommodate the auxiliary middle rail assembly 5c, and the first embodiment The slide rail mechanism of the second embodiment is applicable to the case where the slide rail mechanism 100 is located at the bottom of the drawer, but is not limited thereto.

Here, on the basis of the prior art three-section slide rail, the auxiliary middle rail assembly 5c is added, and the steering member 21 of the synchronization mechanism 2 is disposed on the auxiliary middle rail assembly 5c, and the steering member 21 and the three-section slide rail are not mutually The contact, that is to say, the movement trajectory of the steering member 21 and the tensioning member 23 and the sliding trajectory of the three-section slide rail do not overlap each other at this time, even if the gap between the upper rail 11 and the lower rail 13 is reduced due to wear, The normal operation of the steering member 21 in the synchronizing mechanism 2 is affected, and the problem that the steering member 21 interferes with the upper rail 11 and/or the lower rail 13 in the prior art can be effectively solved. In addition, the present embodiment can utilize the three-section slide rail structure that is common in the market, and only needs to cooperate with the low-cost auxiliary middle rail component, thereby not only simplifying the manufacturing difficulty, but also greatly reducing the production cost. It should be noted that, in this embodiment, the auxiliary middle rail assembly 5c is disposed under the slide rail assembly 1, and the setting of the auxiliary middle rail assembly 5c does not affect the volume of the drawer.

Each auxiliary middle rail assembly 5c includes a limiting seat 51c and a lead screw 52c. The lead screw 52c is movably disposed in the limiting seat 51c, and the lead screw 52c is connected to the steering member 21, When the upper rail 11 or the middle rail 12 moves, the limiting seat 51c remains stationary, and the screw rod 52c and the steering member 21 move together in the same direction with respect to the limiting seat 51c. Here, the support plate 55c is integrally formed with the angle iron 6, the upper surface of the support plate 55c is in contact with the lower surface of the lower rail 13, the limit seat 51c is in a "concave" shape, and the bottom surface of the limit seat 51c abuts against the support plate 55c. bottom. The limiting seat 51c further includes a first insertion end 511c and a second insertion end 512c protruding from the bottom surface. The openings of the first insertion end 511c and the second insertion end 512c extend in a horizontal direction, and the screw rod 52c is limited to the first The insertion end 511c and the second insertion end 512c. In this embodiment, the moving direction of the screw rod 52c can be effectively controlled by the setting of the limiting seat 51c, so that the moving direction of the screw rod 52c is consistent with the moving direction of the upper rail 11 and/or the middle rail 12, that is, the wire The central axis of the rod 52c is parallel to the tensioning member 23 and in the same vertical plane.

In the present embodiment, the front steering member 211 is located at the front end of the screw rod 52c, and the rear steering member 212 is located at the rear end of the screw rod 52c. The front steering member 211 includes the first sliding rail assembly 1a and the second sliding rail. a first front steering member 211a and a second front steering member 211b of the assembly 1b, the rear steering member 212 includes a first rear steering member 212a and a second portion respectively disposed on the first rail assembly 1a and the second rail assembly 1b Rear steering member 212b. The fixing member 22 extends from the upper rail 11 and the lower rail 13 (or the supporting plate 55c) to the lower side of the supporting plate 55c. The fixing member 22 includes a first upper fixing member 221a and a first portion disposed on the first sliding rail assembly 1a. a lower fixing member 222a, a second upper fixing member 221b disposed on the second rail assembly 1b, the tensioning member 23 being divided into three segments by three fixing members 22: passing through the first front steering member 211a and connecting the first The lower fixing member 222a and the first tensioning member of the first upper fixing member 221a sequentially pass through the first rear steering member 212a, the second rear steering member 212b and the second front steering member 211b and are connected to the first upper fixing member 221a and the first The second tensioning member of the second upper fixing member 221b passes through the second rear steering member 212b and the first rear steering member 212a in sequence and connects the second upper fixing member 221b and the third tensioning member of the first lower fixing member 222a. The first tensioning member, the second tensioning member and the third tensioning member are coupled to each other by the fixing member 22 to form a closed loop. Of course, the fixing member 22 may further include a first upper fixing member 221a and a first lower fixing member 222a disposed on the first rail assembly 1a, and a second upper fixing member 221b disposed on the second rail assembly 1b. And the second lower fixing member 222b. At this time, the tensioning member 23 includes a first tensioning member, a second tensioning member, a third tensioning member and a fourth tensioning member. For other descriptions of the present embodiment, reference may be made to the descriptions of other parts of the specification, and details are not described herein again.

In an embodiment of the present invention, the tensioning member 23 includes a first tensioning member, a second tensioning member, and a third tensioning member as an example, and is first The slide rail mechanism 100 in the embodiment is taken as an example, and the slide rail mechanism 100 of other embodiments is also applicable, and will not be described in detail here. As shown in FIGS. 18 and 19, the slide rail mechanism 100 further includes a motor assembly 3 having a first connection end 31 and a second connection end 32 for winding or releasing the tension member 23. Two portions of the tensioning member 23 on the front and rear sides of the same fixing member 22 are respectively wound and connected to the first connecting end 31 and the second connecting end 32, and the motor assembly 3 is operated through the first connection. One of the end 31 and the second connecting end 32 contracts the tensioning member 23, and the other releases the tensioning member 23 to move the tensioning member 23, thereby driving the middle rail 12 through the fixing member 22. And moving on the upper rail 11, the drawer can be automatically pulled under the driving of the motor, and is convenient to use.

In the embodiment, the upper fixing member 221 includes an upper fastening member 2211 fastened on the upper rail 11 and a holed nut 2212 matched with the upper fastening member. The upper tensioning member 231 is worn in the same manner. The hole in the holed nut 2212 is fixed. The lower fixing member 222 includes a lower fastening member 2221 fastened on the lower rail 13 and a first guiding member 2222 and a second guiding member 2223 disposed on the lower fastening member 2221. The lower tensioning member 232 The motor assembly 3 is guided by the first guide member 2222 and the second guide member 2223 to fix the lower layer tension member 232. In order to facilitate the understanding of the structure of the lower fixing member 222, the first guiding member 2222 and the second guiding member 2223 of the lower fixing member 222 are not moved with the lower fastening member 2221, and are still fixed together with the tensioning member 23. The hole with the hole nut 2212 and the upper diverting member 2121 are located on the same line parallel to the screw rod 52, and the first guiding member 2222, the second guiding member 2223, the lower fastening member 2221 and the lower diverting member 2122 are engaged with each other. Located on the same line parallel to the lead screw 52, the tensioning member 23 remains parallel to the same straight line of the lead screw 52 both before and after the upper fixing member 221 and the lower fixing member 222 are fixed.

The sled mechanism 100 also includes a controller that controls operation of the motor assembly 3 to control operation of the motor assembly 3 when the controller receives a signal to pull or advance the drawer. The motor assembly 3 includes a motor that can rotate in forward and reverse directions, a transmission gear that is driven by the motor and can adjust the rotational speed, and a winding drum that is rotated by the transmission gear. The first connecting end 31 and the second connecting end 31 are respectively disposed on the winding bobbin, and two portions of the tensioning member 23 on the front and rear sides of the same fixing member 22 are respectively reversely wound around the The first connecting end 31 and the second connecting end 32 are on. Therefore, when the spool is rotated in one direction, one of the first connecting end 31 and the second connecting end 32 contracts the tensioning member 23, and the other releases the tensioning member 23 so that the The tensioning member 23 moves.

The first connecting end 31 and the second connecting end 32 are respectively wound and connected with the first tensioning member and the third tensioning member on the front and rear sides of the first lower fixing member 222a. The first lower fixing member 222a has a first guiding member 2222 and a second guiding member 2223 that guide the first tensioning member and the third tensioning member to the first connecting end 31 and the second connecting end 32, respectively. The slide rail mechanism 100 further includes a first bushing (not labeled) disposed between the first guiding member 2222 and the first connecting end 31, and the tensioning member 23 is disposed between the first guiding member 2222 and the motor assembly 3. An intermediate portion is disposed in the first bushing, and a length of the tensioning member 23 between the first guiding member 2222 and the motor assembly 3 is greater than a distance between the first guiding member 2222 and the motor assembly 3; The slide rail mechanism 100 further includes a second bushing (not labeled) disposed between the second guide member 2223 and the second connecting end 32, the tensioning member being between the second guiding member 2223 and the motor assembly 3. The portion is disposed in the second bushing, and the length of the tensioning member 23 between the second guiding member 2223 and the motor assembly 3 is greater than the distance between the second guiding member 2223 and the motor assembly 3. Therefore, the synchronization mechanism 2 is conveniently mounted in cooperation with the motor assembly 3.

Of course, the first tensioning member, the second tensioning member and the third tensioning member may be composed of one tensioning member 23, two tensioning members 23 or three tensioning members 23. In order to simplify the assembly process and reduce the cost, a tensioning member 23 is used in the embodiment. The starting end of the tensioning member 23 is wound and connected to the first connecting end 31, and the end passes through the first guiding member 2222 in order. The steering member 211a, the first upper fixing member 221a, the first rear steering member 212a, the second rear steering member 212b, the second front steering member 211b, the second upper fixing member 221b, the second rear steering member 212b, and the first rear steering The piece 212a and the second guide 2223 are then connected to the second connecting end 32.

When the motor rotates in the forward direction, the first tensioning member is wound on the winding drum, and the length of the winding is a, and the upper tensioning member 231 of the first rail assembly 1a is driven forward by a distance, due to the The distance between the front steering member 211a and the first rear steering member 212a is fixed, and the distance between the first front steering member 211a and the second rear steering member 212b of the tensioning member 23 is fixed, so The lower tensioning member 232 of the second rail assembly 1b is driven by the second front steering member 211b, the second rear steering member 212b and the first rear steering member 212a to the upper tensioning member 231 of the first rail assembly 1a by a distance a; And because the distance between the second front steering member 211b and the second rear steering member 212b is fixed, the upper tension member 231 of the second rail assembly 1b is driven by the lower layer tensioning member 232 by a distance a while being the first sliding The lower tension member 232 of the rail assembly 1a passes through the first front diverting member 211a, the first rear diverting member 212a and the second front diverting member 211b, and the second rear diverting member 212b toward the upper tensioning member 231 of the second rail assembly 1b. The transmission distance a, the third tensioning member is released from the winding drum by a length a.

The upper tensioning members 231 of the first rail assembly 1a are respectively fixed to the first upper rail 11a and the first lower rail 13a by the first upper fixing member 221a and the first lower fixing member 222a; the upper layer of the second sliding rail assembly 1b The tensioning member 231 is fixed to the second upper rail 11b by the second upper fixing member 221b. At the same time, the lengths of the first tensioning member, the second tensioning member and the third tensioning member are fixed. When the first tensioning member winds the length a toward the winding bobbin, the upper tensioning member 231 of the first rail assembly 1a is driven by the lower layer tensioning member 232 by a distance a, and the upper rail 11 of the first rail assembly 1a is biased toward The outer pull-out distance a; the lower tension member 232 of the second slide rail assembly 1b is driven to the upper tension member 231 of the first slide rail assembly 1a. a, the upper tension member 231 of the second rail assembly 1b is transmitted to the lower tension member 232 of the second rail assembly 1b by a distance a, so that the second upper rail 11b is also pulled outward by the distance a. At the same time, the third tensioning member releases the distance a from the winding drum, and the refrigerator transmits the distance a to the upper tensioning member 231 of the second sliding rail assembly 1b. Since the length of the third tensioning member is fixed, the second sliding is performed. The second rear diverting member 212b of the rail assembly 1b is pulled forward.

Of course, when the fixing member 22 further includes the second lower fixing member 222b provided on the lower rail 13 of the second rail assembly 1b, the motor assembly 3 can also be matched. It should be noted that the drawer of the present embodiment can also be manually opened, and the synchronous entry and exit of the drawer can also be realized by the operation of the synchronization mechanism 2, and the motor assembly 3 only provides an automatic opening and closing force, and therefore, the motor assembly is omitted. The drawer can still be manually synchronized in and out.

In another embodiment of the present invention, the tensioning member 23 includes a first tensioning member, a second tensioning member, a third tensioning member, and a fourth tensioning member, as shown in FIGS. 20 and 21, The motor assembly 3 includes a first motor assembly 33 wound around the first tensioning member and the fourth tensioning member, and a second motor assembly 34 wound around the third tensioning member and the second tensioning member. The first motor assembly 33 respectively contracts or releases the first tensioning member and the fourth tensioning member, and the second motor assembly 34 respectively contracts or releases the third tensioning member and the second tensioning member, thereby causing the tensioning member 23 moves, which in turn drives the middle rail 12 and the upper rail 11 to move by the fixing member 22.

For the cooperation of the motor assembly 3 and the tensioning member 23 of the present embodiment, reference may be made to the previous embodiment, and details are not described herein again.

Further, in the present embodiment, the synchronization mechanism 2 described with reference to FIGS. 22 and 23 further includes a tension sleeve 24 disposed between the two rear steering members 212, at least one of the two rear steering members 212. An adjustment assembly 4 is provided, the adjustment assembly 4 is movably connected to the tension sleeve 24, and when the adjustment assembly 4 is in a tightened state, the tension sleeve 24 drives the tension member 23 away from the adjustment The assembly 4 is moved until the length of the tensioning member 23 between the two rear turning members 212 is greater than the distance between the two rear turning members 212, and the tensioning member 23 is outside the tensioning sleeve 24 The portion is always in a tensioned state, so that when the upper rail 11 or the middle rail 12 of the first rail assembly 1a is moved, the tensioning member 23 drives the upper rail 11 or the middle rail 12 of the second rail assembly 1b through the fixing member 22. The same distance in the same direction.

Here, compared to the embodiment without the tensioning sleeve 24, the length of the tensioning member 23 between the two rear turning members 212 is greater than the distance between the two rear turning members 212; it is easy to install, and there is no need to worry about The tensioning member 23 is slackened in other portions of the tensioning sleeve 24. In addition, in order to facilitate the installation of the tensioning member 23, a long tensioning member 23 is generally provided. When the tensioning member 23 is assembled to the fixing member 22 and the steering member 21, the tensioning member 23 is easily in a relaxed state. The adjustment of the adjusting member 4 can effectively adjust the tightness of the other tensioning members 23 outside the tensioning sleeve 24, so that the other tensioning members 23 outside the tensioning sleeve 24 are always kept in a tight state, thereby improving synchronization and stability.

In a specific example of the invention, the adjustment assembly 4 is mounted in the rear diverting member 212 of the second rail assembly 1b, and there is no adjustment assembly in the rear steering member of the first rail assembly 1a, of course, in other examples In order to improve the adjustment range and the convenience of adjustment, the adjustment assembly 4 may also be disposed in both of the rear steering members 212.

The rear steering member 212 is fixed to the rear end of the screw rod 52 through the base 213. On the side of the first rail assembly 1a, a fixing collar 25 is disposed between the tension sleeve 24 and the base 213 of the tensioning member 23. The fixing collar 25 is perpendicular to the screw rod 52, the portion of the tensioning member 23 in the fixing collar 25 and the portion of the steering member 212 extending from the portion through the rear steering member 212 and adjacent to the rear steering member 212 A portion is vertically and in the same plane, so that the tensioning member 23 can run smoothly and effortlessly during the opening or closing of the sliding rail; at the same time, the tensioning member 23 can be reduced to move around the rear steering member 212. Wear and extend life.

On the side of the second rail assembly 1b, as shown in FIG. 12, the adjustment assembly 4 is located in the base 213, and the adjustment assembly 4 includes an upper adjustment assembly 4a and a lower adjustment assembly 4b, and an upper adjustment assembly 4a and upper The diverting member 2121 is adapted to adjust the length of the tensioning member 23 passing through the upper diverting member 2121. The lower adjusting member 4b cooperates with the lower diverting member 2122 for adjusting the tensioning member 23 passing through the lower diverting member 2121. length. below. The following adjustment assembly 4b is taken as an example to detail the structure of the adjustment assembly.

As shown in FIG. 13 , the pedestal 213 has a first opening 2131 and a second opening 2132 which are perpendicular to each other and are electrically connected to each other. The end of the tension sleeve 24 is located at the second opening 2132 and is disposed through The tensioning member 23 in the tension sleeve 24 passes through the lower diverting member 2122 from the second opening 2132 and extends to the first opening 2131, and is extended by the first opening 2131 to be fixed to the fixing member 22. It should be noted that the first opening 2131 and the second opening 2132 of the upper adjusting component 4a and the lower adjusting component 4b may be mutually isolated openings to avoid stringing.

Specifically, the adjusting component 4 includes a latching member 41 and a synchronous top spring 42 for driving the latching member 41. The base 213 is formed with a first convex portion 2133, and the latching member 41 has a hollow structure, and A second protrusion 411 is formed on the inner wall of the latching member 41. The first protrusion 2133 and the second protrusion 411 are surrounded by a receiving cavity (not labeled), and the synchronous top spring 42 is just right. Placed in the receiving cavity. Here, the first convex portion 2133 and the second convex portion 411 are in a completely closed structure, and the tensioning member 23 may sequentially pass through the second convex portion 411, the first convex portion 2133, the lower steering member 2122, and extend to the first opening 2131. At the office.

The synchronous top spring 42 has a first end 421 and a second end 422 disposed opposite to each other, and the tension sleeve 24 has a close proximity to the synchronous spring The first end portion 241 abuts the first convex portion 2133, and the second end 422 and the first end portion 241 abut the two of the second convex portion 411 side. Here, since the diameter of the tension sleeve 24 is larger than the diameter of the tension member 23, the tension sleeve 24 can be abutted against the second convex portion 411 by the difference in diameter, and the tension member 23 can pass through the second convex portion 411. .

When the adjusting assembly 4 is in an initial state, the tension sleeve 24 abuts the second convex portion 411, so that the synchronous top spring 42 is restrained in the receiving cavity surrounded by the first convex portion 2133 and the second convex portion 411. Inside, the latch member 41 does not move.

When the adjusting component 4 is in the tightening state, the tensioning sleeve 24 drives the tensioning member 23 to move in the direction A, the tensioning sleeve 24 is disengaged from the second convex portion 411, and at the same time, the second convex portion 411 is opposite to the synchronous spring The force of 42 also disappears. At this time, the synchronous top spring 42 can push the second convex portion 411 to move in the direction A, that is, the synchronous spring 42 drives the latch member 41 to move in the A direction until the second convex portion 411 is again. Resist the tension sleeve 24. Through the above adjustment process, the tensioning member 23 on the left side of the tension sleeve 24 is pulled a distance in the direction A, and the length of the tensioning member 23 between the two rear steering members 212 is greater than between the two rear steering members 212. The distance, that is to say, at this time, the excess length of the tensioning member 23 has been consumed, and the tensioning member 23 is in a taut state at other portions outside the tensioning sleeve 24.

In the embodiment, the synchronization mechanism 2 further includes a tab 26, and the outer wall of the latch member 41 is formed with a plurality of slots 412, and the base 213 is formed with at least one socket 2134 corresponding to the slot 412. The tab 26 passes through the socket 2134 and is inserted into the slot 412 such that the latch member 41 is relatively fixed to the base 213. Here, when it is necessary to adjust the length of the tension member 23, the tab 26 is pulled out so that the latch member 41 can be moved relative to the base 213, and when the adjustment is completed, the tab 26 is inserted to fix the position of the latch member 41.

In the embodiment, the end of the latching member 41 further defines a limiting end 413. The base 213 is formed with a limiting surface 2135 that cooperates with the limiting end 413. When the latching member 41 moves to In the extreme position, the limiting end 413 moves toward the limiting surface 2135 until the limiting end 413 and the limiting surface 2135 interfere with each other. Here, the arrangement of the limiting surface 2135 and the limiting end 413, on the one hand, can prevent the latching member 41 from coming off the base 213 during the movement, and on the other hand, can also limit the movable range of the latching member 41.

The present invention also provides a refrigerator comprising the slide rail mechanism 100 as described above.

In summary, in the slide rail mechanism 100 of the present invention, the tensioning member 23 is wound between the fixing members 22 of the two slide rail assemblies 1 through the steering member 21, and the tensioning members 23 are cross-connected to one of the slide rails. The upper rail 11 and the lower rail 13 of the other rail assembly 1 are such that when the upper rail 11 or the middle rail 12 of the first rail assembly 1a moves, the tensioning member 23 drives the second rail assembly through the fixing member 22. The upper rail 11 or the middle rail 12 of 1b is displaced by the same distance in the same direction, and the synchronous movement of the two sets of slide rail assemblies 1 is realized, thereby avoiding the skew or sway phenomenon caused by uneven force during the drawing process, and can be pulled The drawer is locked at any position in the process, and the mute effect is good in the whole process; by adding the auxiliary middle rail assembly 5, and the steering member 21 is disposed on the auxiliary middle rail assembly 5, the gap between the upper rail 11 and the lower rail 13 is changed. The normal operation of the steering member 21 is not affected, thereby ensuring the stability of the synchronization mechanism 2; by the cooperation of the motor assembly 3 and the synchronization mechanism 2, when the motor assembly 3 is in operation, the connection to the motor assembly 3 is made The tensioning member 23 moves, and the middle member is driven by the fixing member 22 12 and the upper rail 11 moves, automatic drawer pull, easy to use; by providing the adjustment assembly 4, can effectively adjust the tension of the tensioning member 23, improving the user experience.

It should be understood that, although the description is described in terms of embodiments, the embodiments are not intended to be construed as a single. The technical solutions in the embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions set forth above are merely illustrative of the possible embodiments of the present invention, and are not intended to limit the scope of the present invention. Changes are intended to be included within the scope of the invention.

Claims

A slide rail mechanism for pulling or pushing a drawer in a box body, comprising a first rail assembly and a second rail assembly disposed opposite each other, each rail assembly having an upper rail, a middle rail and a lower sliding joint The rail is characterized in that: the slide rail mechanism further comprises a synchronizing mechanism for keeping the first rail assembly and the second rail assembly synchronized, and the synchronizing mechanism comprises two sets of auxiliary middle rail assemblies that cooperate with the two sets of rail assemblies, a steering member, a tensioning member, and a fixing member disposed on the two sets of the rail assembly, wherein each of the auxiliary middle rail assemblies is located at a corresponding one of the sliding rail assemblies adjacent to the drawer receiving space a side, the tensioning member is wound between the fixing members of the two rail assemblies by the steering member, such that when the upper rail or the middle rail of the first rail assembly moves, the tensioning member drives the second member through the fixing member The upper or middle rail of the rail assembly is displaced the same distance in the same direction.
The slide rail mechanism according to claim 1, wherein each of the auxiliary middle rail assemblies comprises a limit seat and a screw rod, wherein the lead rod is movably disposed in the limit seat, the wire The rod connects the steering member, and when the upper rail or the middle rail moves, the limiting seat remains stationary, and the screw rod and the steering member move together in the same direction relative to the limiting seat.
The sliding rail mechanism according to claim 2, wherein the synchronization mechanism further comprises a support plate, the support plate is fixedly connected to the lower rail or the casing, and the limiting seat is fixed at the On the support plate.
The slide rail mechanism according to claim 3, wherein the support plate is formed with a limiting groove that cooperates with the screw rod, and the limiting groove limits the wire when the screw rod moves The direction of movement of the rod.
The slide rail mechanism according to claim 2, wherein the limiting seat comprises a first insertion end and a second insertion end which are spaced apart from each other, the screw rod is limited to the first insertion end and the Inside the second insertion end.
The slide rail mechanism of claim 2 wherein the central axis of the lead screw is parallel to the tensioning member.
The slide rail mechanism according to claim 2, wherein the steering member comprises a base and a wheel disc disposed in the base, the tensioning member is wound around the wheel, the screw rod The base is fixed to each other.
The slide rail mechanism according to claim 2, wherein the steering member comprises a front steering member and a rear steering member, and the front steering member and the rear steering member are respectively located at a front end and a rear end of the screw rod. The limiting seat is located in an intermediate portion of the front steering member and the rear steering member.
The slide rail mechanism according to claim 1, wherein the fixing member is located on a side of the slide rail assembly adjacent to the drawer receiving space, and the fixing member comprises a first portion disposed on the first rail assembly. An upper fixing member and a first lower fixing member, a second upper fixing member disposed on the second rail assembly; the steering member includes a first front steering member disposed on the auxiliary middle rail assembly of the first sliding rail assembly And a first rear steering member, a second front steering member and a second rear steering member disposed on the auxiliary middle rail assembly of the second rail assembly; the tensioning member includes the first front steering member and is connected to the first The first fixing member and the first tensioning member of the first upper fixing member sequentially pass through the first rear steering member, the second rear steering member and the second front steering member and are connected to the first upper fixing member and the second upper fixing member The two tensioning members pass through the second rear steering member and the first rear steering member in sequence and connect the second upper fixing member and the third tensioning member of the first lower fixing member.
A refrigerator characterized by comprising the slide rail mechanism according to any one of claims 1-9.