Mute synchronous sliding rail with high impact strength

Abstract

The utility model provides a silent synchronous slide rail with high impact strength, which comprises a fixed rail, a middle rail and a movable rail which are connected in sequence, an upper ball nest component is connected between the movable rail and the middle rail in a sliding manner, a lower ball nest component is connected between the fixed rail and the middle rail in a sliding manner, the middle rail is provided with a synchronous transmission component, and the synchronous transmission component comprises a mounting frame and a helical gear. The upper bead nest assembly is integrally connected with an upper helical rack, the lower bead nest assembly is integrally connected with a lower helical rack, the mounting frame is buckled on the middle rail, and the helical gear is rotationally connected to the mounting frame and is linearly meshed and rotated on the upper helical rack and the lower helical rack respectively. The sliding block is simple in structure, silent, good in bearing and impact-resistant effect, reliable, durable and high in synchronous sliding performance, and the use quality of products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of slide rails, in particular to a silent synchronous slide rail with high impact strength. Background Art

[0002] The slide rail is an indispensable component in the drawer installation. When the operator acts on the drawer, the slide rail is driven to extend and retract to realize the pushing and pulling of the drawer.

[0003] In order to ensure that the drawer can be opened or closed smoothly and avoid jamming due to eccentricity, a synchronous gear device is added to the slide rail. For example, there is a synchronous slide rail, which includes a movable rail, an intermediate rail, a bottom rail, a rack assembly and a ball assembly, wherein the movable rail is slidably matched with the intermediate rail, and the intermediate rail is slidably matched with the bottom rail; the rack assembly is arranged between the bottom rail and the intermediate rail, and the ball assembly is arranged between the intermediate rail and the movable rail; a synchronous gear device is also arranged between the intermediate rail and the bottom rail, and the gear of the synchronous gear device passes through the through hole of the intermediate rail and extends above the intermediate rail, the bottom of the gear is meshed with the rack of the rack assembly, and the top of the gear is matched with the movable rail.

[0004] Although the synchronous slide rail of the above structure has synchronous sliding properties to a certain extent, it has the following shortcomings in practical applications:

[0005] 1) In drawers with heavy loads, the slide rails are easily bent when they are pulled out, causing the drawers to sag and resulting in poor stability. In addition, the movable rail, middle rail, and fixed rail of the three-section slide rail are pulled out or retracted one section at a time, resulting in poor synchronous sliding performance, which affects the use of the product.

[0006] 2) The gear structure of the existing synchronous gear device generally adopts spur teeth. During the meshing process of the gear and the rack of the synchronous gear device, the spur teeth of the gear directly jump on the tooth groove of the rack, resulting in a large impact force and a large noise, which is easy to damage the teeth and the rack. At the same time, the jumping amplitude is large, the teeth are easy to jump, and it is difficult to achieve transmission synchronization.

[0007] 3) When using the existing synchronous gear device, the ball assembly and the slide rail are prone to collide and generate noise during the opening and closing process of the drawer, which also affects the use effect of the product. Utility Model Content

[0008] The invention object of the utility model is to overcome the deficiencies of the prior art and provide a silent synchronous slide rail with high impact strength, which has a simple structure, is silent, has good load-bearing and impact resistance effect, is reliable and durable, and has high synchronous sliding properties, thereby ensuring the quality of product use.

[0009] The invention objective of the utility model is achieved as follows: a silent synchronous slide rail with high impact strength comprises a fixed rail, a middle rail and a movable rail connected in sequence, an upper bead nest assembly is slidably connected between the movable rail and the middle rail, a lower bead nest assembly is slidably connected between the fixed rail and the middle rail, wherein the middle rail is provided with a synchronous transmission assembly, the synchronous transmission assembly comprises a mounting frame and a bevel gear, the upper bead nest assembly is integrally connected with an upper bevel rack, the lower bead nest assembly is integrally connected with a lower bevel rack, the mounting frame is buckled on the middle rail, the bevel gear is rotatably connected to the mounting frame and linearly meshes and rotates on the upper bevel rack and the lower bevel rack respectively.

[0010] According to the above optimization, the helical angle of the helical gear is set to 5° to 20°, and the upper helical rack and the lower helical rack respectively have a helical groove for meshing and rotating with the helical angle of the helical gear.

[0011] According to the above optimization, a through slot is opened in the middle of the middle rail, and the mounting frame is provided with elastic buckles that can be deformed and mounted on the through slot or deformed and detached from the through slot, and the elastic buckles are respectively arranged on both sides of the mounting frame.

[0012] According to the above optimization, the mounting frame is provided with a mounting groove, and the front and rear inner walls of the mounting groove are respectively provided with an upper semicircular protrusion and a lower semicircular protrusion for rotational connection with the bevel gear, and the front and rear side walls of the bevel gear are respectively provided with a concave circular groove for rotational connection with the upper semicircular protrusion and the lower semicircular protrusion.

[0013] According to the above optimization, the upper surface of the middle rail is provided with an upper front limit protrusion and an upper rear limit protrusion for limiting the forward and backward movement of the upper bead nest assembly.

[0014] According to the above optimization, the upper bead nest assembly includes a front bead nest part, a middle bead nest part, and a rear bead nest part. The front and rear ends of the middle bead nest part are respectively provided with bayonet holes, and the front bead nest part and the rear bead nest part are provided with elastic buckle blocks that match the bayonet holes, and the upper oblique rack is integrally formed on the bottom surface of the middle bead nest part.

[0015] According to the above optimization, the front bead nest and the rear bead nest are respectively provided with multi-stage buffer spring blocks, and the front bead nest and the rear bead nest are set as "7"-shaped bead nests.

[0016] According to the above optimization, the inner wall of the fixed rail is provided with a lower front limit protrusion and a lower rear limit protrusion for limiting the forward and backward movement of the lower bead nest assembly.

[0017] According to the above optimization, the lower bead nest assembly is set to be "q"-shaped, and the lower oblique rack is integrally formed on the upper surface of the lower bead nest assembly.

[0018] The advantages of the utility model are:

[0019] 1) By utilizing the structural coordination of the helical gears with the upper and lower helical racks, the meshing connection is tight, the transmission clearance is reduced, the jumping phenomenon during the transmission meshing is avoided, the noise generation is reduced, and their own characteristics are combined to enhance the structural load-bearing strength, reduce deformation, improve synchronous transmission, and ensure the use effect of the product.

[0020] 2) The structure of the mounting frame and helical gear is coordinated to enhance the stability and smoothness of the structural transmission and facilitate assembly.

[0021] 3) The upper bead nest assembly and the lower bead nest assembly of the present structure are adopted to improve the structural stability and smoothness, and to achieve a better mute effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the installation of a preferred embodiment of the utility model.

[0023] Figure 2 It is a cross-sectional view of a preferred embodiment of the utility model.

[0024] Figure 3 This is an installation cross-sectional view of a preferred embodiment of the utility model.

[0025] Figure 4 This is an installation exploded view of a preferred embodiment of the utility model.

[0026] Figure 5 This is a structural diagram of a synchronous transmission assembly of a preferred embodiment of the utility model.

[0027] Figure 6 It is a cross-sectional view of a synchronous transmission assembly according to a preferred embodiment of the utility model.

[0028] Figure 7 This is an exploded view of a synchronous transmission assembly according to a preferred embodiment of the present utility model.

[0029] Figure 8 This is an exploded view of the bead nest assembly of the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings.

[0031] According to the attached Figures 1 to 8As shown, the utility model has a silent synchronous slide rail with high impact strength, comprising a fixed rail 1, a middle rail 2, and a movable rail 3 connected in sequence, an upper bead nest assembly 4 is slidably connected between the movable rail 3 and the middle rail 2, and a lower bead nest assembly 5 is slidably connected between the fixed rail 1 and the middle rail 2. Among them, the middle rail 2 is provided with a synchronous transmission assembly. The synchronous transmission assembly comprises a mounting frame 6 and a bevel gear 7, the upper bead nest assembly 4 is integrally connected with an upper bevel rack 8, the lower bead nest assembly 5 is integrally connected with a lower bevel rack 9, the mounting frame 6 is buckled on the middle rail 2, and the bevel gear 7 is rotatably connected to the mounting frame 6 while linearly meshing and rotating on the upper bevel rack 8 and the lower bevel rack 9 respectively.

[0032] In practical applications, the helical angle of the helical gear 7 is set to 5° to 20°, and the upper helical rack 8 and the lower helical rack 9 respectively have an oblique groove 10 for meshing and rotating with the helical angle of the helical gear 7 .

[0033] By utilizing the structural coordination of the bevel gear 7 and the upper bevel rack 8 and the lower bevel rack 9, the meshing connection is tight, the transmission clearance is reduced, the jumping phenomenon during the transmission meshing is avoided, the generation of noise is reduced, and their own characteristics are combined to enhance the structural load-bearing and impact resistance strength, reduce deformation, improve synchronous transmission, and ensure the use effect of the product.

[0034] Reference Figures 1 to 8 As shown, in further detail, a through slot 21 is opened in the middle of the middle rail 2, and the mounting frame 6 is provided with an elastic clip 11 that can be deformed and mounted on the through slot 21 or deformed and detached from the through slot 21, and the elastic clip 11 is respectively arranged on both sides of the mounting frame 6.

[0035] By means of the buckling of the elastic buckle 11 and the through slot 21 , the bevel gear 7 of the synchronous transmission assembly can be conveniently disassembled and assembled on the middle rail 2 , and the assembly is convenient, and maintenance and replacement are easy.

[0036] In addition, the mounting frame 6 is provided with a mounting groove 61, and the front and rear inner walls of the mounting groove 61 are respectively provided with an upper semicircular protrusion 62 and a lower semicircular protrusion 63 for rotational connection with the bevel gear 7, and the front and rear side walls of the bevel gear 7 are respectively provided with a concave circular groove 71 for rotational connection with the upper semicircular protrusion 62 and the lower semicircular protrusion 63.

[0037] By utilizing the structural cooperation between the upper semicircular protrusion 62 , the lower semicircular protrusion 63 and the concave circular groove 71 , the bevel gear 7 can be conveniently assembled on the mounting frame 6 , and the rotation stability is improved, and it is also easy to disassemble.

[0038] Reference Figures 1 to 8 As shown, in further detail, the upper surface of the middle rail 2 is provided with an upper front limit protrusion 12 and an upper rear limit protrusion 13 for limiting the forward and backward movement of the upper bead nest assembly 4.

[0039] The upper bead nest assembly 4 comprises a front bead nest portion 41, a middle bead nest portion 42, and a rear bead nest portion 43. The front and rear ends of the middle bead nest portion 42 are respectively provided with bayonet holes 44. The front bead nest portion 41 and the rear bead nest portion 43 are provided with elastic buckle blocks 45 matched with the bayonet holes 44. The upper oblique rack 8 is integrally formed on the bottom surface of the middle bead nest portion 42. It is convenient to assemble and easy to manufacture.

[0040] Furthermore, the front bead nest 41 and the rear bead nest 43 are respectively provided with multi-stage buffer spring blocks 46, and the front bead nest 41 and the rear bead nest 43 are configured as "7"-shaped bead nests, so as to achieve good buffering effect and reduce noise generation.

[0041] In addition, the inner wall of the fixed rail 1 is provided with a lower front limit protrusion 14 and a lower rear limit protrusion 15 for limiting the forward and backward movement of the lower bead nest assembly 5. At the same time, the lower bead nest assembly 5 is set to be "Q"-shaped, and the lower oblique rack 9 is integrally formed on the upper surface of the lower bead nest assembly 5.

[0042] The upper bead nest assembly 4 and the lower bead nest assembly 5 of the present structure are adopted to improve the structural stability and smoothness, enhance the synchronous transmission quality of the slide rail, and achieve a better mute effect.

[0043] The above-mentioned specific embodiments are only specific implementation methods with better effects of the utility model. Any structure that is the same or equivalent to the silent synchronous slide rail with high impact strength of the utility model is within the protection scope of the utility model.

Claims

1. A silent synchronous slide rail with high impact strength, comprising a fixed rail (1), a middle rail (2), and a movable rail (3) connected in sequence, an upper bead nest assembly (4) being slidably connected between the movable rail (3) and the middle rail (2), and a lower bead nest assembly (5) being slidably connected between the fixed rail (1) and the middle rail (2), characterized in that: The middle rail (2) is provided with a synchronous transmission assembly, which comprises a mounting frame (6) and a bevel gear (7). The upper bead nest assembly (4) is integrally connected with an upper bevel rack (8), and the lower bead nest assembly (5) is integrally connected with a lower bevel rack (9). The mounting frame (6) is buckled on the middle rail (2), and the bevel gear (7) is rotatably connected to the mounting frame (6) and linearly meshes and rotates on the upper bevel rack (8) and the lower bevel rack (9).

2. According to claim 1, the silent synchronous slide rail with high impact strength is characterized in that: The helical angle of the helical gear (7) is set to 5° to 20°, and the upper helical rack (8) and the lower helical rack (9) respectively have an oblique groove (10) for meshing and rotating with the helical angle of the helical gear (7).

3. The silent synchronous slide rail with high impact strength according to claim 1, characterized in that: A through slot (21) is formed in the middle of the middle rail (2), and the mounting frame (6) is provided with elastic buckles (11) which can be deformed and buckled on the through slot (21) or deformed and separated from the through slot (21), and the elastic buckles (11) are respectively arranged on both sides of the mounting frame (6).

4. The silent synchronous slide rail with high impact strength according to claim 1 or 3, characterized in that: The mounting frame (6) is provided with a mounting groove (61), and the front and rear inner walls of the mounting groove (61) are respectively provided with an upper semicircular protrusion (62) and a lower semicircular protrusion (63) for rotational connection with the bevel gear (7), and the front and rear side walls of the bevel gear (7) are respectively provided with a concave circular groove (71) for rotational connection with the upper semicircular protrusion (62) and the lower semicircular protrusion (63).

5. The silent synchronous slide rail with high impact strength according to claim 1, characterized in that: The upper surface of the middle rail (2) is provided with an upper front limit convex block (12) and an upper rear limit convex block (13) for limiting the forward and backward movement of the upper bead nest assembly (4).

6. The silent synchronous slide rail with high impact strength according to claim 1 or 5, characterized in that: The upper bead nest assembly (4) comprises a front bead nest portion (41), a middle bead nest portion (42), and a rear bead nest portion (43); the front and rear ends of the middle bead nest portion (42) are respectively provided with snap-fits (44); the front bead nest portion (41) and the rear bead nest portion (43) are provided with elastic snap-fit ​​blocks (45) matched with the snap-fits (44); and the upper oblique rack (8) is integrally formed on the bottom surface of the middle bead nest portion (42).

7. The silent synchronous slide rail with high impact strength according to claim 6, characterized in that: The front bead nest (41) and the rear bead nest (43) are respectively provided with multi-stage buffer spring blocks (46), and the front bead nest (41) and the rear bead nest (43) are configured as "7"-shaped bead nests.

8. The silent synchronous slide rail with high impact strength according to claim 1, characterized in that: The inner wall of the fixed rail (1) is provided with a lower front limit protrusion (14) and a lower rear limit protrusion (15) for limiting the forward and backward movement of the lower bead nest assembly (5).

9. The silent synchronous slide rail with high impact strength according to claim 1, characterized in that: The lower bead nest assembly (5) is configured in a "Q" shape, and the lower oblique rack (9) is integrally formed on the upper surface of the lower bead nest assembly (5).

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