CN104323610B - Sliding track mechanism - Google Patents

Abstract

The present invention provides a slide rail mechanism, comprising a first slide rail assembly and a second slide rail assembly oppositely arranged, each slide rail assembly has an upper rail, a middle rail and a lower rail that are slidably fitted with each other, and the slide rail mechanism also includes A synchronous mechanism that keeps the first slide rail assembly and the second slide rail assembly moving synchronously. The synchronization mechanism includes a steering piece, a fixing piece, and a tension piece arranged on two sets of slide rail assemblies. Between the fixing parts of the two slide rail assemblies, the fixing parts include upper fixing parts respectively arranged on two upper rails and lower fixing parts on at least one lower rail, when the sliding rail assembly is opened, closed and opened or closed During the process, the upper fixing part is always located between the rear end of the upper rail and the front end of the middle rail, the lower fixing part is always located between the front end of the lower rail and the rear end of the middle rail, and the upper part of the first slide rail assembly When the rail or the middle rail moves, the tension member drives the upper rail or the middle rail of the second slide rail assembly to displace the same distance in the same direction through the fixing member.

Description

Rail Mechanism

technical field

The invention relates to a sliding rail mechanism, in particular to a synchronous and silent sliding rail mechanism.

Background technique

At present, the three-section slide rails on the market mainly have the following problems in practical application: First, noise is generated during use: the existing three-section slide rails use the upper rail to run first, and when the upper rail travel distance reaches the extreme, use the upper rail Contact and collide with the limit device of the middle rail, and pull out the middle rail; also use the limit device of the middle rail and the lower rail to contact and collide, to reach the distance that the middle rail is pulled to reach the pole; and the limit device is between the upper rail and the middle rail , The noise of "peddling, pedaling" is generated during the contact and collision between the middle rail and the lower rail, which brings high-frequency noise to the user. Secondly, left and right shaking occurs during use: the existing three-section slide rails are mostly used in pairs in practical applications, and the operation mode described above is adopted. At the same time, the transmission between the three-section slide rails uses several steel balls as the sliding device between the rails. ; Therefore, the three-section slide rails cannot be locked with each other, and the front and rear space is reserved for ups and downs, so that in actual use, the force and direction of the force must be on the centerline of the two slide rails; otherwise, a pair of three-section The surface of the device pulled out by the slide rail will appear one after the other, and at any position after being pulled out, when the force on both sides of the two hands is different, it will shake left and right, which will bring safety hazards to the user.

In order to solve the above problems, an improved slide rail mechanism has appeared on the market: (1) A connecting rod fixing hole mechanism is made at the overlapping surface of one of a pair of three-section slide rails, and a pair of slide rails is connected by a connecting rod in the middle. Indirect fixation, which reduces side-to-side shaking. (2) A pair of symmetrical racks and a pair of symmetrical gears matching the racks are attached to the bottom surface of the lower rail of a pair of three-section slide rails. A connecting rod hole fixing device is reserved in the center of the gears, and a connecting rod is used to connect the lower rail indirectly. fixed, thereby reducing side-to-side shaking.

The above two mechanisms to solve the left and right sway both use a connecting rod to fix one of the three slide rails, because the connecting rod may tilt between the two slide rails, so it still cannot completely solve the problem that the left and right symmetrical slide rails have equal pull-out distances. , so that the left and right shaking of the object on a pair of three-section slide rails cannot be eradicated. In practical application, the first mechanism is relatively simple but the effect is not good. The left and right three-section slide rails reserve less space for lifting and shrinking, and there is still obvious left and right shaking, and the connecting rod method is used to adjust the structure of the object that needs to slide on it. There are certain restrictions, the connecting rod needs to be avoided, and there is a "peddling" impact sound when the three-section slide rail is running. The second type of structure is relatively complex and costly, but it uses a rack, gear and connecting rod device, which has great restrictions on the structure of objects that need to slide on it and reduces the effective space for objects between the slide rails. "the sound of.

In view of this, it is necessary to improve the existing slide rail assembly to solve the above problems.

Contents of the invention

The object of the present invention is to provide a synchronous and silent slide rail mechanism.

In order to achieve the purpose of the above invention, the present invention provides a slide rail mechanism for pulling out or pushing the drawer in the box, including a first slide rail assembly and a second slide rail assembly oppositely arranged, the first slide rail assembly and the second slide rail assembly Each slide rail assembly in the two slide rail assemblies has an upper rail, a middle rail and a lower rail that are slidably matched to each other, and it is characterized in that: the slide rail mechanism also includes a A synchronous mechanism that moves synchronously. The synchronization mechanism includes a steering piece, a fixing piece, and a tensioning piece arranged on two sets of slide rail assemblies. The tensioning piece is wound between the fixing pieces of the two slide rail assemblies through the steering piece. The fixing parts include two upper fixing parts respectively arranged on the two upper rails and a lower fixing part on at least one lower rail. When the slide rail assembly is opened, closed and opened or closed, the upper fixed The part is always located between the rear end of the upper rail and the front end of the middle rail, and the lower fixing part is always located between the front end of the lower rail and the rear end of the middle rail. When the upper rail or the middle rail of the first slide rail assembly moves, The tensioning part drives the upper rail or the middle rail of the second slide rail assembly to displace the same distance in the same direction through the fixing part; the fixing part includes a first upper fixing part and a first lower fixing part arranged on the first sliding rail assembly Components, the second upper fixing part set on the second slide rail assembly; the steering piece includes the first front steering piece and the first rear steering piece set on the first slide rail assembly, the second slide rail assembly The second front steering piece and the second rear steering piece; the tensioning piece includes a first tensioning piece passing through the first front steering piece and connecting the first lower fixing piece and the first upper fixing piece, passing through the first rear steering piece in turn piece, the second rear steering piece and the second front steering piece and connect the first upper fixing piece and the second tensioning piece of the second upper fixing piece, pass through the second rear steering piece and the first rear steering piece in turn and connect the second The upper fixing part and the third tensioning part of the first lower fixing part.

As a further improvement of the present invention, the distance between the upper fixing part and the rear end of the upper rail is half of the distance from the rear end of the upper rail to the front end of the middle rail when the upper rail and the middle rail are fully opened; The distance between the front end of the lower rail is half of the distance from the rear end of the lower rail to the front end of the middle rail when the lower rail and the middle rail are fully opened.

As a further improvement of the present invention, the steering piece includes a front steering piece and a rear steering piece respectively fixed at the front and rear ends of each middle rail, and the front steering piece is arranged so that the tensioning piece is pulled out after passing through the front steering piece. Divided into an upper tension piece and a lower tension piece, the rear steering piece includes an upper steering piece and a lower steering piece respectively matched with the upper tension piece and the lower tension piece, the upper tension piece, the lower tension piece After passing through the upper steering piece and the lower steering piece of one of the slide rail assemblies, the tightening piece respectively extends to the lower steering piece and the upper steering piece fixed on the other slide rail assembly.

As a further improvement of the present invention, the upper tension member and the lower tension member are both parallel to the middle rail.

As a further improvement of the present invention, the fixing parts include two upper fixing parts arranged on the two upper rails, two lower fixing parts arranged on the two lower rails, and the steering parts include The front steering piece and the rear steering piece at the front and rear ends, the tensioning piece includes a front steering piece that passes through a slide rail assembly and connects the front tensioning piece that is located at the upper fixing piece and the lower fixing piece of the same sliding rail assembly, passes through two a rear steering piece and connect the upper fixing piece of the first slide rail assembly with the first rear tensioning piece of the lower fixing piece of the second slide rail assembly, and pass through the two rear steering pieces and connect the lower fixing piece of the first slide rail assembly piece and the second rear tensioning piece of the upper fixing piece of the second slide rail assembly.

As a further improvement of the present invention, the fixing parts include a first upper fixing part and a first lower fixing part arranged on the first slide rail assembly, a second upper fixing part and a second fixing part arranged on the second sliding rail assembly. The lower fixing piece; the steering piece includes a first front steering piece and a first rear steering piece arranged on the first slide rail assembly, a second front steering piece and a second rear steering piece located on the second slide rail assembly; the The tensioning piece is composed of two tensioning pieces, the starting point of one tensioning piece is fixed on the first lower fixing piece, and the end point passes through the first front steering piece, the first upper fixing piece, the first rear steering piece, the second The second rear steering piece is fixed on the lower rail of the second slide rail assembly; the starting point of the other tensioning piece is fixed on the second lower fixing piece, and the end point passes through the second front steering piece, the second upper fixing piece, the second The rear steering piece and the first rear steering piece are fixed on the lower rail of the first slide rail assembly.

The beneficial effects of the present invention are: the sliding rail mechanism of the present invention forms a synchronous mechanism through the steering piece, the fixing piece and the tensioning piece, and the tensioning piece is wound between the fixing pieces of the two slide rail assemblies through the turning piece, so that the first When the upper rail or the middle rail of a slide rail assembly moves, the tension member drives the upper rail or the middle rail of the second slide rail assembly to displace the same distance in the same direction through the fixing piece, so as to realize the synchronous movement of the two sets of slide rail assemblies and avoid The phenomenon of deflection or swing caused by uneven force during the drawing process; and the drawer can be locked at any position during the drawing process, and the mute effect is good during the whole process.

Description of drawings

Fig. 1 is a structural schematic diagram of the slide mechanism of the present invention in a closed state.

FIG. 2 is a partially exploded view of FIG. 1 .

Fig. 3 is a structural schematic diagram of the slide rail mechanism in Fig. 1 in an open state.

Fig. 4 is a schematic structural diagram of the synchronization mechanism of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1 to Fig. 4, the present invention provides a slide rail mechanism 100 for pulling out or pushing a drawer (not shown) in a box, including two sets of slide rail assemblies 1 arranged oppositely, so that the two The group slide assembly 1 maintains a synchronous mechanism 2 that moves synchronously. Of course, the slide rail mechanism 100 can also be used for drawing, expanding or contracting other structures.

The slide rail assembly 1 includes a first slide rail assembly 11a and a second slide rail assembly 11b, each slide rail assembly 1 has an upper rail 111, a middle rail 112 and a lower rail 113 that are slidably fitted with each other, that is, the first slide rail assembly 11a has a first upper rail 111a, a first middle rail 112a, and a first lower rail 113a that cooperate with each other, and the second slide rail assembly 11b has a second upper rail 111b, a second middle rail 112b, and a second lower rail that cooperate with each other. Rail 113b. The lower rail 113 is fixed on the box body through angle irons, the upper rail 111 is fixed to the drawer, and the middle rail 112 is co-located between the upper rail 111 and the lower rail 113 . When in use, the lower rail 113 is fixed, and the middle rail 112 and the upper rail 111 can be pulled out or pushed relative to the lower rail 113, thereby driving the drawer to be pulled out or pushed into the box; the lower rail 113 is a fixed The middle rail 112 and the upper rail 111 are moving rails.

The slide rail assembly 1 further includes an upper row of balls 114 arranged between the upper rail 111 and the middle rail 112 , a lower row of balls 115 arranged between the middle rail 112 and the lower rail 113 , in the process of pulling out or pushing the upper rail 111 or the middle rail 112 relative to the lower rail 113, the friction can be reduced and labor is saved. The upper rail 111 and the lower rail 113 are respectively provided with an upper groove 1111 and a lower groove 1131 opening toward the middle rail 112; The lower side is accommodated in the upper groove 1111 and the lower groove 1131 respectively. Further, the upper row of balls 114 includes a base fixed on the upper side of the middle rail 112 and several balls arranged on the base, and the lower row of balls 115 includes a base fixed on the lower side of the middle rail 112 and arranged on the base. Several balls on the base.

The synchronizing mechanism 2 includes a steering member 21 , a fixing member 22 , a tensioning member 23 and a tensioning sleeve 24 disposed on the two sets of slide rail assemblies 1 . The tension member 23 is sequentially wound and arranged (wrapped) between the several fixing members 22 of the two slide rail assemblies 1 through the steering member 21 and connected to the several fixing members 22, so that the upper rail 111 of the first slide rail assembly 11a Or when the middle rail 112 moves, the tension member 23 drives the upper rail 111 or the middle rail 112 of the second slide rail assembly 11b to displace the same distance in the same direction through the fixing member 22, so as to realize the synchronous movement of the two sets of slide rail assemblies 1, avoiding The phenomenon of deflection or swing caused by uneven force during the drawing process; and the drawer can be locked at any position during the drawing process, and the mute effect is good during the whole process.

The steering member 21 includes a front steering member 211 and a rear steering member 212 respectively arranged at the front and rear ends of each middle rail 112. The first front steering piece 211a and the second front steering piece 211b of 11b, the rear steering piece 212 includes the first rear steering piece 212a and the second rear steering piece 212a respectively arranged on the first slide rail assembly 11a and the second slide rail assembly 11b. Turning member 212b.

The front turning member 211 is arranged such that the tensioning member 23 is divided into an upper layer tensioning member 231 and a lower layer tensioning member 232 after passing through the front turning member 211, and the rear steering member 212 includes a 231, the upper steering member 2121 and the lower steering member 2122 matched with the lower tension member 232, the upper tension member 231 and the lower tension member 232 pass through the upper steering member 2121 and the lower steering member 2122 of one of the slide rail assembly 1 Then extend to the lower steering member 2122 and the upper steering member 2121 fixed on another slide rail assembly 1 respectively, and connect the upper rail 111 and the lower rail 113 respectively located in two groups of slide rail assemblies 1 in a crossing manner.

The front steering member 211 is a vertically installed pulley for the wheel disc that the tension member 23 bypasses, and the upper steering member 2121 and the lower steering member 2122 are horizontally installed for the wheel disc that the tension member 23 bypasses. The pulley, the tension member 23 bypasses the front steering member 211 to reach the highest position of the wheel disc and the position of the tension member 23 on the upper steering member 2121 is located on the same straight line, so that the upper tension member 231 is parallel to the middle rail 112; the tension member 23 bypasses the front steering member 211 to reach the lowest position of the wheel disc and the position of the lower steering member 2122 is located on a straight line parallel to the middle rail 112, So that the lower tension member 232 is parallel to the middle rail 112 ; so that the slide rail mechanism 100 runs smoothly.

The fixing part 22 includes two upper fixing parts 221 respectively disposed on the two upper rails 111 and at least one lower fixing part 222 disposed on at least one lower rail 113 .

During the opening, closing and opening or closing process of the slide rail assembly 1, the upper fixing member 221 is always located between the rear end of the upper rail 111 and the front end of the middle rail 112, and the lower fixing member 222 is always located at the front end of the middle rail 112. Between the front end of the lower rail 113 and the rear end of the middle rail 112, to avoid the separation of the three slide rails from each other, reduce the wear of the tension member 23 at the steering member 21 and the fixing member 22, and prolong the service life without affecting the slide rail The mechanism 100 can pull the drawer out the effective length of the case.

When the slide rail assembly 1 is fully opened, the rear portion of the upper rail 111 partially overlaps the front portion of the middle rail 112, and the rear portion of the middle rail 112 partially overlaps the front portion of the lower rail 113. overlap to enhance the stability of the slide rail assembly 1 in the open state and prevent the drawer from shaking. Preferably, the distance between the upper fixing member 221 and the rear end of the upper rail 111 is half of the distance from the rear end of the upper rail 111 to the front end of the middle rail 112 when the upper rail 111 and the middle rail 112 are fully opened; The distance between the part 222 and the front end of the lower rail 113 is half of the distance from the rear end of the lower rail 113 to the front end of the middle rail 112 when the lower rail 113 and the middle rail 112 are fully opened, so as to avoid affecting the slide rail mechanism 100 and drawer The effective length of the box is drawn out, and the collision or friction between the steering member 21 and the fixing member 22 can be avoided, thereby prolonging the service life. When the slide rail assembly 1 is fully opened, assuming that the distance from the rear end of the upper rail 111 to the front end of the middle rail 112 is L, the distance between the upper fixing member 221 and the rear end of the upper rail 111 is L/2; The distance between the front end of the lower rail 113 is M, and the distance between the lower fixing member 222 and the front end of the lower rail 113 is M/2.

The tension member 23 is wound between the fixing members 22 of the two slide rail assemblies 1 through the front steering member 211 and the rear steering member 212 and forms a loop, that is, the tension member 23 passes through the front steering member 211 and the rear steering member 211 to form a loop. The direction of the member 212 is changed so as to connect the upper fixing member 221 and the lower fixing member 222 . In the present invention, forming a loop refers to: the two parts of the tension member 23 located at the front side and the rear side of the same fixing member 22 are tightly connected through the fixing member 22 without breakpoints; or the two parts of the tension member 23 The end points are fixed on the same slide rail, and there is no turning member 21 between the two end points along the direction of the slide rail.

The starting point and the ending point of the tension member 23 extending on the circuit are located on the same upper rail 111 or the same lower rail 112 of the slide rail assembly 1 . When the tension member 23 is one, the starting point and end point of the tension member 23 are located on the same upper rail 111 or the same lower rail 112 of the slide rail assembly 1, and are fixed at the same position or by a fixing member 22 A plurality of fixing parts 22 are fixed at different positions. When the tension members 23 are at least two tension members 23, the starting point and end point of two adjacent tension members 23 are located on the same upper rail 111 or the same lower rail 112 of the slide rail assembly. Taking two tension members 23 as an example, the starting point of one tension member 23 and the end point of the other tension member 23 are located on the same upper rail 111 or the same lower rail 112; The starting point of another tension member 23 is located on the same upper rail 111 or the same lower rail 112 .

In this embodiment, the upper fixing part 221 has a fixed point for fixing the tensioning part 23 to the upper rail 111, so that the upper tensioning part 231 is the same tensioning part, which is convenient for installation and simplifies the installation process. The lower fixing part 222 has two fixing points for fixing the tensioning part 23 to the lower rail 113 to fix two sections of the tensioning part 23 located at the front and back of the lower fixing part 222 or two ends of the same tensioning part 23 . The upper fixing part 221 includes an upper fastening part 2211 fastened on the upper rail 111 and a nut with a hole 2212 matched with the upper fastening part 2211, and the upper tension part 231 passes through the nut with a hole 2212 fixed in the hole. The lower fixing member 222 includes a lower clamping member 2221 fixed on the lower rail 113 and a buckle ring 2222 arranged on the lower clamping member 2221, and the lower tension member 232 is provided with the The buckle ring 2222 is buckled with a buckle sleeve (not labeled) to fix the lower tension member 232 . The hole of the nut with holes 2212 and the upper steering member 2121 are located on the same straight line parallel to the middle rail 112, and the buckle ring 2222 that cooperates with the buckle sleeve and the lower steering member 2122 are located parallel to the middle rail 112. Therefore, the tension member 23 remains on the same straight line parallel to the middle rail 112 as before being fixed after the upper fixing member 221 and the lower fixing member 222 are fixed.

When the fixing member 22 includes a first upper fixing member 221a and a first lower fixing member 222a arranged on the first slide rail assembly 11a, and a second upper fixing member 221b arranged on the second slide rail assembly 11b, the The tension member 23 is divided into three sections through the three fixing members 22 of the first upper fixing member 221a, the first lower fixing member 222a and the second upper fixing member 221b: passing through the first front steering member 211a and connecting with the first lower fixing member 222a and the first tensioning member of the first upper fixing member 221a pass through the first rear steering member 212a, the second rear steering member 212b and the second front steering member 211b in turn and connect the first upper fixing member 221a and the second upper The second tensioning part of the fixing part 221b passes through the second rear turning part 212b and the first rear turning part 212a in sequence and connects the second upper fixing part 221b with the third tensioning part of the first lower fixing part 222a. The first tension member, the second tension member and the third tension member are connected to each other through the fixing member 22 to form a closed circuit.

Certainly, the first tension member, the second tension member and the third tension member may be composed of one tension member 23 , two tension members 23 or three tension members 23 . In order to simplify the assembly process and reduce costs, a tension member 23 is used in this embodiment. The starting point of the tension member 23 is fixed on the first lower fixing member 222a, and the end point passes through the first front steering member 211a, the first upper The fixing part 221a, the first rear steering part 212a, the second rear steering part 212b, the second front steering part 211b, the second upper fixing part 221b, the second rear steering part 212b and the first rear steering part 212a are fixed on the rear with the first rear steering part 212a. On the lower rail 113 of the fixing part 222a, to form a loop with the starting point. Both the end point and the starting point of the tension member 23 are provided with buckle sleeves and fixed on the first lower rail 113a through the same lower fixing member 222, or the end point of the tension member 23 is fixed on the first lower rail 113a other locations than the starting point. Different from this embodiment, the starting point and the ending point of the tension member 23 can also be fixed on the first upper rail 111a or the second upper rail 111b, and the winding method is the same as the above winding method.

When the drawer is drawn, when the first upper rail 111a is pulled out a distance a relative to the first middle rail 112a, the upper layer tension member 231 on the first slide rail assembly 11a moves toward the first sliding rail assembly 111a through the first front steering member 211a. The lower tension member 232 transmission distance a on the rail assembly 11a; because the distance between the first front steering member 211a and the first rear steering member 212a is fixed, the upper tension member located in the first slide rail assembly 11a When 231 moves, the lower layer tension member 232 connected to it on the second slide rail assembly 11b will compensate the transmission distance a to the upper layer tension member 231 located on the first slide rail assembly 11a; at the same time, the second front steering member 211b and The distance between the second rear turning members 212b is fixed, and at this time, the upper tension member 231 located in the second slide rail assembly 11b transmits a distance a to the lower tension member 232 located in the second slide rail assembly 11b, and then passes The upper layer tension member 231 located in the second slide rail assembly 11b pulls the second upper fixing member 221b to promote the second upper rail 111b to pull forward a distance a relative to the second middle rail 112b; at the same time, it is located in the lower layer of the first slide rail assembly 11a The tension member 232 transmits a distance a to the upper layer tension member 231 located in the second slide rail assembly 11b. At this time, because the first lower fixing member 222a is fixed, the first middle rail 112a moves toward the first lower rail 113a relative to the first lower rail 113a. The front pullout distance a, similarly, the second middle rail 112b is pulled forward by a distance a relative to the second lower rail 113b. The first slide rail assembly 11a and the second slide rail assembly 11b are pulled out synchronously, and the drawer pull-out effective distance is between the pull-out distance a of the upper rail 111 relative to the middle rail 112 and the pull-out distance a of the middle rail 112 relative to the lower rail. And, that is, the effective pull-out distance of the drawer is 2a.

Similarly, when the second upper rail 111b is pulled out a distance a relative to the second middle rail 112b, it also drives the first upper rail 111a, the first middle rail 112a, and the second middle rail 112b to pull out a distance a, and the drawer is pulled out effectively. The distance is 2a.

When the number of the fixing parts 22 is four, the first upper fixing parts 221a, the first lower fixing parts 222a, the first lower fixing parts 222a, the upper rails 111 and the lower rails 113 respectively arranged on the first slide rail assembly 11a, respectively The upper rail 111 of the second slide rail assembly 11b, the second upper fixing part 221b and the second lower fixing part 222b of the lower rail 113. The tensioning member 23 is divided into four sections by the four fixing members 22 of the first upper fixing member 221a, the first lower fixing member 222a, the second upper fixing member 221b and the second lower fixing member 222b: after the first front steering The part 211a connects the first front tensioning part of the first upper fixing part 221a and the first lower fixing part 222a, and connects the second front tensioning part of the second upper fixing part 221b and the second lower fixing part 222b through the second front steering part 211b. The first rear tensioning member passes through the two rear steering members 212 and connects the upper fixing member 221 of the first slide rail assembly 11a and the lower fixing member 222 of the second slide rail assembly 11b, passes through the two rear steering members 212 And connect the lower fixing part 222 of the first slide rail assembly 11a with the second rear tensioning part of the upper fixing part 221 of the second slide rail assembly 11b.

The first front tension member, the first rear tension member, the second front tension member and the second rear tension member can be composed of one tension member 23, two tension members 23, three tension members 23 Or four tension members 23 form. When two tensioning pieces 23 are used, the stress points of the tensioning pieces 23 are dispersed during the drawing process of the drawer, and the service life is long. The starting point of one of the tension members 23 is fixed on the first lower fixing member 222a, and the end point is fixed after successively passing through the first front steering member 211a, the first upper fixing member 221a, the first rear steering member 212a, and the second rear steering member 212b. On the lower rail 113 of the second slide rail assembly 11b; the starting point of the other tension member 23 is fixed on the second lower fixing member 222b, and the end point passes through the second front turning member 211b, the second upper fixing member 221b, the second The rear steering member 212b and the first rear steering member 212a are fixed on the lower rail 113 of the first slide rail assembly 11a. Certainly, the starting point and the ending point of the two tensioning 23 can also be fixed to other fixing pieces 22 to form a loop, so as to achieve the same effect.

When the drawer is drawn, when the first upper rail 111a is pulled out a distance a relative to the first middle rail 112a, the upper layer tension member 231 on the first slide rail assembly 11a moves toward the first sliding rail assembly 111a through the first front steering member 211a. The lower tension member 232 transmission distance a on the rail assembly 11a; because the distance between the first front steering member 211a and the first rear steering member 212a is fixed, the upper tension member located in the first slide rail assembly 11a When 231 moves, the lower layer tension member 232 connected to it on the second slide rail assembly 11b will compensate the transmission distance a to the upper layer tension member 231 located on the first slide rail assembly 11a. The piece 222a is fixed, so the second middle rail 112a is pulled forward for a distance a; meanwhile, the distance between the second front steering piece 211b and the second rear steering piece 212b is fixed, so it is located at the second slide rail assembly The upper tension member 231 of 11b transmits a distance a to the lower tension member 232 of the second slide rail assembly 11b, and then the upper tension member 231 of the second slide rail assembly 11b pulls the second upper fixing member 221b to promote the second upper tension member 221b. The two upper rails 111b are pulled forward relative to the second middle rail 112b for a distance a; at the same time, the lower tension member 232 located in the first slide rail assembly 11a transmits a distance a to the upper tension member 231 located in the second slide rail assembly 11b. At this time, because the first lower fixing member 222a is fixed, the first middle rail 112a is pulled forward by a distance a relative to the first lower rail 113a. The first slide rail assembly 11a and the second slide rail assembly 11b are pulled out synchronously, and the drawer pull-out effective distance is between the pull-out distance a of the upper rail 111 relative to the middle rail 112 and the pull-out distance a of the middle rail 112 relative to the lower rail. And, that is, the effective pull-out distance of the drawer is 2a.

Further, the synchronization mechanism 2 also includes a tension sleeve 24 arranged between the two rear steering members 212, and the length of the tension member 23 between the two rear steering members 212 is greater than that of the two rear steering members 212 The linear distance of the tension member 23 is passed through the tension sleeve 24 between the two rear steering members 212, and the tension sleeve 24 makes the tension member 23 in the tension Other parts outside cover 24 are in tensioned state all the time. Compared with the embodiment without the tension sleeve 24, the length of the tension member 23 between the two rear steering members 212 is greater than the linear distance between the two rear steering members 212; it is convenient for installation, and there is no need to worry about the The tension member 23 will loosen in other parts outside the tension sleeve 24 . Certainly, in the embodiment with the tensioning sleeve 24 , the length of the tensioning member 23 between the two rear steering members 212 may also be equal to the linear distance between the two rear steering members 212 .

The rear steering member 212 is fixed to the rear end of the middle rail 112 through the steering member base 213, and a fixing collar 25 is arranged between the tensioning sleeve 24 and the base of the tensioning member 23, and the fixing collar 25 is perpendicular to the middle rail 112, and the part of the tension member 23 in the fixed collar 25 is perpendicular to and located at the same position as the other part extending from this part after passing through the rear steering member 212 and close to the rear steering member 212. On the plane, so that the tension member 23 can run smoothly during the opening or closing of the slide rail, saving effort; at the same time, it can reduce the wear and tear of the tension member 23 when it moves around the rear steering member 212, and prolong its life .

In addition, the sliding rail mechanism 100 of the present invention also has a silent effect during the pulling process. The drawer is fixed on the upper rail 111. When the user pulls out or pushes the drawer at a speed of V, the speed at which the upper rail 111 is pulled out is also V, and the tension member 23 is driven by the steering member 21 to drive the middle rail 112 at a speed of V. V/2 pull out, when the outer rail 111 and the middle rail 112 are fully pulled out, the effective distance pulled out by the upper rail 111 is twice or more than the effective distance pulled out by the middle rail 112, in the process of pulling out the slide rail assembly 100 In this way, the collision between the upper rail 111 and the middle rail 112 can be avoided, so that the effect of silence can be achieved.

To sum up, in the slide rail mechanism 100 of the present invention, the tension member 23 is placed between the fixing members 22 of the two slide rail assemblies 1 through the steering member 21, and the tension member 23 cross-connects one of the slide rails The upper rail 111 and the lower rail 113 of another slide rail assembly 1, so that when the upper rail 111 or the middle rail 112 of the first slide rail assembly 11a moves, the tension member 23 drives the second slide rail assembly through the fixing member 22 The upper rail 111 or the middle rail 112 of 11b is displaced by the same distance in the same direction, realizing the synchronous movement of the two sets of slide rail assemblies 1, avoiding the phenomenon of deflection or swing caused by uneven force during the drawing process; Lock the drawer at any position during the process, and the mute effect is good throughout the process.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solution of the present invention.

Claims (6)

1. A slide rail mechanism, used for pulling out or advancing a drawer in a box, comprising a first slide rail assembly and a second slide rail assembly oppositely arranged, each of the first slide rail assembly and the second slide rail assembly The slide rail assemblies all have an upper rail, a middle rail, and a lower rail that are slidably matched to each other, and it is characterized in that: the slide rail mechanism also includes a synchronization mechanism that keeps the first slide rail assembly and the second slide rail assembly moving synchronously, and the synchronization mechanism It includes steering pieces, fixing pieces and tensioning pieces arranged on two sets of slide rail assemblies. Two upper fixing parts on the upper rail and at least one lower fixing part on the lower rail, when the slide rail assembly is opened, closed and opened or closed, the upper fixing part is always located behind the upper rail Between the end and the front end of the middle rail, the lower fixing part is always located between the front end of the lower rail and the rear end of the middle rail. When the upper rail or the middle rail of the first slide rail assembly moves, the tensioning part passes through the fixing part Drive the upper rail or the middle rail of the second slide rail assembly to displace the same distance in the same direction; the fixing parts include the first upper fixing part and the first lower fixing part arranged on the first sliding rail assembly, The second upper fixing piece on the assembly; the steering piece includes the first front steering piece and the first rear steering piece arranged on the first slide rail assembly, the second front steering piece and the second steering piece arranged on the second slide rail assembly Rear steering piece; the tensioning piece includes a first tensioning piece that passes through the first front steering piece and connects the first lower fixing piece and the first upper fixing piece, passes through the first rear steering piece, the second rear steering piece and The second front steering part and the second tensioning part connecting the first upper fixing part and the second upper fixing part pass through the second rear steering part and the first rear steering part in turn and connect the second upper fixing part and the first lower fixing part The third tension member of the piece. 2. The slide rail mechanism according to claim 1, wherein the distance between the upper fixing member and the rear end of the upper rail is the distance from the rear end of the upper rail to the front end of the middle rail when the upper rail and the middle rail are fully opened. half of the distance; the distance between the lower fixing member and the front end of the lower rail is half of the distance from the rear end of the lower rail to the front end of the middle rail when the lower rail and the middle rail are fully opened. 3. The slide rail mechanism according to claim 1, characterized in that: the steering member includes a front steering member and a rear steering member respectively fixed at the front and rear ends of each middle rail, and the front steering member is configured as the The tension member is divided into an upper tension member and a lower tension member after passing through the front steering member, and the rear steering member includes an upper steering member and a lower steering member respectively matched with the upper tension member and the lower tension member. , the upper tension member and the lower tension member respectively extend to the lower steering member and the upper steering member fixed on the other slide rail assembly after passing through the upper steering member and the lower steering member of one slide rail assembly. 4. The slide rail mechanism according to claim 3, wherein the upper tension member and the lower tension member are both parallel to the middle rail. 5. The slide rail mechanism according to claim 1, characterized in that: said fixing parts include two upper fixing parts arranged on two upper rails and two lower fixing parts arranged on two lower rails, said The steering piece includes a front steering piece and a rear steering piece respectively fixed at the front and rear ends of each middle rail. The front tension member of the mount, the first rear tension member passing through the two rear deflectors and connecting the upper mount of the first slide rail assembly to the lower mount of the second slide rail assembly, and passing through the two rear deflectors And connect the lower fixing part of the first slide rail assembly and the second rear tensioning part of the upper fixing part of the second slide rail assembly. 6. The slide rail mechanism according to claim 5, characterized in that: the fixing parts include a first upper fixing part and a first lower fixing part arranged on the first sliding rail assembly, and a first lower fixing part arranged on the second sliding rail assembly The second upper fixing piece and the second lower fixing piece; the steering piece includes a first front steering piece and a first rear steering piece arranged on the first slide rail assembly, and a second front steering piece arranged on the second slide rail assembly. The steering piece and the second rear steering piece; the tensioning piece is composed of two tensioning pieces, the starting point of one tensioning piece is fixed on the first lower fixing piece, and the end point passes through the first front steering piece, the first upper The fixing piece, the first rear steering piece, and the second rear steering piece are fixed on the lower rail of the second slide rail assembly; the starting point of the other tensioning piece is fixed on the second lower fixing piece, and the end point passes through the second front steering piece in turn The piece, the second upper fixing piece, the second rear steering piece, and the first rear steering piece are fixed on the lower rail of the first slide rail assembly.