CN111387734A - A reduction gear type guide mechanism for drawer pulling - Google Patents

Abstract

The invention discloses a reduction gear type guide mechanism for drawer pulling, comprising a fixed rail assembly, a movable rail assembly and an intermediate rail assembly. The movable rail assembly is fixed with a movable rail rack, and the intermediate rail assembly is fixed with a movable rail The middle rail rack is opposite to the rail rack, and the middle rail rack and the movable rail rack are arranged along the sliding direction of the movable rail assembly and the middle rail assembly. The mechanism is fixedly installed on the fixed rail assembly through the connecting plate assembly; thus the movable rail assembly and the intermediate rail assembly provided by the present invention can not only achieve the effect of synchronous operation, but also realize differential motion, the motion is more gentle and orderly, and there is no intermediate In case of external leakage of the rail components, the noise when the slide rail is opened or closed is reduced and the entire opening or closing force is uniform, so that it has a better user experience.

Description

A reduction gear type guide mechanism for drawer pulling

technical field

The invention particularly relates to a drawer guide rail device, in particular to a reduction gear type guide mechanism for drawing a drawer.

Background technique

Drawers with three hidden slide rails generally include outer rails, middle rails and fixed rails. When the drawer is pulled out or closed, the pulling force or the closing force of the drawer is uneven and the speed is inconsistent, and the speed is uneven during the operation of the drawer. , it will produce abnormal noise and give the user a poor experience. Moreover, the outer rail and the middle rail are connected to each other by sliding, so the relative speed cannot be guaranteed, and there may be problems such as overlapping sliding out, sliding in, collision, or leakage of the dislocated middle rail.

At present, there are many drawer guide mechanisms on the market that are equipped with a linkage mechanism between the middle rail and the outer rail, but generally the middle rail and the outer rail slide at a synchronous speed. When the drawer is pulled suddenly, the linkage mechanism cannot move quickly. There may be problems such as stumbling or abnormal noise. Therefore, in response to such problems, we need a method in which the middle rail and the outer rail can be decelerated and linked to drive during the process of opening or closing the drawer, and the speed and force between the multi-section guide rails of the drawer can be adjusted. A drawer multi-section guide rail device that maintains basic uniformity and reduces abnormal noise.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a reduction gear type guide mechanism for drawer pulling, so as to solve the problems raised in the above-mentioned background art.

To achieve the above object, the present invention provides the following technical solutions:

A reduction gear type guide mechanism for drawer pulling, comprising a fixed rail assembly, a movable rail assembly and an intermediate rail assembly, the intermediate rail assembly is slidably clamped on the fixed rail assembly, and the intermediate rail assembly is slidably clamped for connecting with the intermediate rail assembly. A drawer-fixed movable rail assembly, wherein the fixed rail assembly and the intermediate rail assembly are clamped in the interlayer, and the intermediate rail assembly and the movable rail assembly are clamped in the interlayer, and a sliding assembly is arranged on the movable rail assembly. A movable rail rack is fixed, an intermediate rail rack opposite to the movable rail rack is fixed on the intermediate rail assembly, and the intermediate rail rack and the movable rail rack are arranged along the sliding direction of the movable rail assembly and the intermediate rail assembly The intermediate rail rack and the movable rail rack are connected by transmission through a deceleration mechanism, and the deceleration mechanism is fixedly installed on the fixed rail assembly through the connecting plate assembly.

A further solution: the sliding assembly includes an upper bead nest assembly that is slidably clamped between the movable rail assembly and the intermediate rail assembly, and a lower bead nest assembly that is slidably clamped between the fixed rail assembly and the intermediate rail assembly. The ball nest assembly and the lower ball nest assembly are respectively provided with ball grooves that pass through up and down, and the ball grooves are rotatably fixed with rolling connection with the inner wall of the interlayer of the movable rail assembly and the intermediate rail assembly, the fixed rail assembly and the The inner wall of the interlayer of the intermediate rail assembly rolls and connects the balls.

A further solution: the outer side of the fixed rail assembly is vertically fixed with a sliding clamping plate, the cross section of the sliding clamping plate is an inverted L shape bent inward, and the lower bead nest assembly is a bottom set. There is a mouth shape with an opening, the lower bead nest assembly is wrapped on the top surface and the side edge of the sliding clamping plate, and the whole intermediate rail assembly is slidably sleeved above the sliding clamping plate through the lower bead nest assembly.

A further solution: the gear reduction mechanism includes a reduction gear, a linkage gear and a transmission gear, the transmission gear and the linkage gear are jointly fixed on a rotating shaft, and the rotating shaft is rotatably fixed on the plate of the connecting plate assembly. On the upper surface, the reduction gear is rotatably fixed on one side of the linkage gear and the transmission gear through the rotating shaft, the connecting plate assembly is fixedly connected with the fixed rail assembly, the transmission gear is meshed with the movable rail rack, and the linkage gear is connected with The reduction gear is meshed and connected, the reduction gear is meshed with the intermediate rail rack, the transmission gear and the reduction gear have the same gear radius and tooth slot, and the gear radius of the linkage gear is smaller than that of the reduction gear.

A further solution: the movable rail rack is fixed at the top position of the outer side wall of the movable rail assembly, a rack mounting plate is vertically fixed at the bottom of the outer side wall of the intermediate rail assembly, and the intermediate rail rack is fixed on the rack mounting plate. The top of the plate, the bottom of the outer side wall of the fixed rail assembly is vertically fixed with the gear plate, the gear plate is located at the bottom of the rack mounting plate and is horizontal and parallel to the rack mounting plate, and the outer side of the gear plate is bent upward to install The mounting plate is vertically arranged on the outer side of the movable rail rack and the intermediate rail rack, and the reduction gear mechanism is mounted on the inner surface of the mounting plate.

Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is arranged between the movable rail assembly and the intermediate rail assembly for transmission connection through the movable rail rack, the intermediate rail rack and the reduction gear mechanism, and the movable rail assembly It can not only achieve the effect of synchronous operation with the intermediate rail assembly, but also realize differential motion, the movement is more smooth and orderly, there will be no leakage of the intermediate rail assembly, and the noise when the slide rail is opened or closed and the entire opening or closing effect can be reduced. The force is even, making it have a better experience.

Description of drawings

FIG. 1 is a schematic structural diagram of a reduction gear type guide mechanism for drawer pulling.

FIG. 2 is a schematic structural diagram of a radial cross-section of a reduction gear type guide mechanism for drawer pulling.

FIG. 3 is a schematic structural diagram of the speed reduction mechanism in the reduction gear type guide mechanism for drawer pulling.

FIG. 4 is a schematic structural diagram of the reduction gear type guide mechanism for drawing the drawer when the drawer is installed in the drawer slot of the cabinet body.

Fig. 5 is a partial enlarged view of the upper bead nest assembly of the reduction gear type guide mechanism for drawer pulling.

In the figure: Fixed rail assembly 1, sliding snap plate 10, gear plate 11, reduction gear 12, linkage gear 13, transmission gear 14, movable rail assembly 2, movable rail rack 20, upper ball nest assembly 3, ball groove 30 , Ball 31 , intermediate rail assembly 4 , intermediate rail rack 40 , rack mounting plate 41 , lower ball nest assembly 5 , buffer assembly 6 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

Referring to FIGS. 1 to 5 , in an embodiment of the present invention, a reduction gear-type guide mechanism for drawing a drawer includes a fixed rail assembly 1 , a movable rail assembly 2 and an intermediate rail assembly 4 . The fixed rail assembly 1 slides on a card Next, the middle rail assembly 4 is slid on the middle rail assembly 4 and then the movable rail assembly 2 for fixing to the drawer is connected to the movable rail assembly 2. The fixed rail assembly 1 and the middle rail assembly 4 are snapped into the interlayer, the middle rail assembly 4. There are sliding assemblies in the interlayer which are snap-connected with the movable rail assembly 2. A movable rail rack 20 is fixed on the movable rail assembly 2, and a movable rail rack 20 is fixed on the intermediate rail assembly 4. The intermediate rail rack 40, the intermediate rail rack 40 and the movable rail rack 20 are arranged along the sliding direction of the movable rail assembly 2 and the intermediate rail assembly 4, and the intermediate rail rack 40 and the movable rail rack 20 pass through The deceleration mechanism is connected by transmission, and the deceleration mechanism is fixedly installed on the fixed rail assembly 1 through the connecting plate assembly.

The sliding assembly includes an upper bead nest assembly 3 that is slidably clamped between the movable rail assembly 2 and the intermediate rail assembly 4 and a lower bead nest assembly 5 that is slidably clamped between the fixed rail assembly 1 and the intermediate rail assembly 4. The upper ball nest assembly 3 and the lower ball nest assembly 5 are respectively provided with ball grooves 30 running through the upper and lower sides. The ball grooves 30 are rotatably fixed with the inner wall of the interlayer with the movable rail assembly 2 and the intermediate rail assembly 4 respectively. Rolling contact, balls 31 of the inner wall of the interlayer of the fixed rail assembly 1 and the intermediate rail assembly 4 rolling in contact, the balls 31 are arranged between the outer wall of the fixed rail assembly 1 and the inner wall of the intermediate rail assembly 4, the inner wall of the movable rail assembly 2 and the intermediate rail assembly 4. The outer walls are slidably supported to ensure that the intermediate rail assembly 4 can be sleeved on the fixed rail assembly 1 for sliding, and the movable rail assembly 2 can be sleeved on the intermediate rail assembly 4 to slide.

The outer side of the fixed rail assembly 1 is vertically fixed with a sliding snap plate 10 , the cross section of the sliding snap plate 10 is an inverted L shape bent inward, and the lower bead nest assembly 5 is provided with a bottom. The mouth shape of the opening, the lower bead nest assembly 5 is wrapped on the top surface and the side of the sliding clamping plate 10, and the intermediate rail assembly 4 is integrally sleeved on the sliding clamping plate 10 through the lower bead nest assembly 5. The half-mouth-shaped sliding snap plate 10 cooperates with the mouth-shaped lower bead nest assembly 5, and the middle rail assembly 4 and the fixed rail assembly 1 can be well slidably connected as a whole, reducing the sliding resistance and improving the fixing effect of the middle rail assembly 4. Smoothness of sliding on rail assembly 1.

The gear reduction mechanism includes a reduction gear 12, a linkage gear 13 and a transmission gear 14. The transmission gear 14 and the linkage gear 13 are jointly fixed on a rotating shaft, and the rotating shaft is rotatably fixed on the plate of the connecting plate assembly. On the upper surface, the reduction gear 12 is rotatably fixed on one side of the linkage gear 13 and the transmission gear 14 through the rotating shaft, the connecting plate assembly is fixedly connected with the fixed rail assembly 1, and the transmission gear 14 is meshed with the movable rail rack 20. , the linkage gear 13 is meshed with the reduction gear 12, the reduction gear 12 is meshed with the intermediate rail rack 40, the transmission gear 14 and the reduction gear 12 have the same gear radius and tooth slot, and the linkage gear 13 The radius of the gear is smaller than the gear radius of the reduction gear 12. When the movable rail assembly 2 is set to pull the drawer, the movable rail rack 20 drives the transmission gear 14 to rotate, the transmission gear 14 drives the linkage gear 13 to rotate, and the linkage gear 13 drives the reduction gear 12 to rotate. , the reduction gear 12 meshes with the intermediate rail rack 40. Since the intermediate rail rack 40 is integrally fixed on the intermediate rail assembly 4, and the intermediate rail assembly 4 is slidably clamped on the fixed rail assembly 1, the reduction gear 12 is on the intermediate rail When the rack 40 rotates, the reduction gear 12 will drive the intermediate rail assembly 4 to slide on the fixed rail assembly 1 through the intermediate rail rack 40. Since the transmission gear 14 and the linkage gear 13 rotate coaxially, the rotational speed is the same, and the linkage gear 13 rotates. The gear radius is smaller than the gear radius of the reduction gear 12. When the interlocking gear 13 and the reduction gear 12 are engaged with each other, the rotational speed of the reduction gear 12 is lower than the rotational speed of the interlocking gear 13. Therefore, the transmission gear 14 and the reduction gear 12 have the same gear radius and tooth slot. Different from the meshing sliding speed of the corresponding movable rail rack 20 and the intermediate rail rack 40 , when the movable rail rack 20 crosses the transmission gear 14 at a high speed, the reduction gear 12 drives the intermediate rail rack 40 to slide in the same direction at a low speed. , so as to realize the differential motion mode of the movable rail assembly 2 and the intermediate rail assembly 4. In the actual process of pulling the drawer, the movable rail assembly 2 will slide out first when the drawer is pulled, and the intermediate rail assembly 4 will slowly follow the movable rail assembly 2. Slide out, when the movable rail assembly 2 is fully pulled out, the middle rail assembly 4 slides to the limit position, the drawer is pulled out the longest length, when the drawer is pushed and closed, similarly, when the movable rail assembly 2 is pushed to the end, the middle rail The assembly 4 is also completely received into the drawer slot of the drawer cabinet immediately following the movable rail assembly 2, and there will be no leakage of the intermediate rail assembly 4.

The movable rail rack 20 is fixed on the top of the outer side wall of the movable rail assembly 2, the bottom of the outer side wall of the intermediate rail assembly 4 is vertically fixed with a rack mounting plate 41, and the intermediate rail rack 40 is fixed on the rack mounting plate. The top of the plate 41 and the bottom of the outer side wall of the fixed rail assembly 1 are vertically fixed to the gear plate 11 . The gear plate 11 is located at the bottom of the rack mounting plate 41 and is horizontal and parallel to the rack mounting plate 41 . A mounting plate is bent upward from the side, the mounting plate is vertically arranged on the outside of the movable rail rack 20 and the intermediate rail rack 40, the reduction gear mechanism is mounted on the inner surface of the mounting plate, and the rack The mounting plate 41 and the gear plate 11 mainly guide the gear reduction mechanism to the fixed rail assembly 1, the movable rail assembly 2 and the intermediate rail assembly 4 for installation on the outside, which is convenient for later maintenance and reduces the installation space occupied by the reduction gear mechanism.

The working principle of the present invention is as follows: in actual use, the fixed rail assembly 1 is installed on the two side walls of the drawer slot of the cabinet body, and the movable rail assembly 2 is fixed on both sides of the bottom surface of the drawer. When the drawer is pulled outward, the movable rail The rack 20 drives the transmission gear 14 to rotate, the transmission gear 14 drives the linkage gear 13 to rotate, the linkage gear 13 drives the reduction gear 12 to rotate, and the reduction gear 12 meshes with the intermediate rail rack 40. Because the intermediate rail rack 40 is integrally fixed in the middle On the rail assembly 4, the middle rail assembly 4 is slidably clamped on the fixed rail assembly 1, so when the reduction gear 12 rotates on the middle rail rack 40, the reduction gear 12 will drive the middle rail assembly 4 through the middle rail rack 40 to be fixed. When sliding on the rail assembly 1, since the transmission gear 14 and the linkage gear 13 rotate coaxially and have the same rotational speed, the gear radius of the linkage gear 13 is smaller than the gear radius of the reduction gear 12. When the linkage gear 13 and the reduction gear 12 are meshed and connected, the reduction gear The rotational speed of 12 is lower than the rotational speed of the interlocking gear 13, so the transmission gear 14 and the reduction gear 12 with the same gear radius and tooth slot have different meshing sliding speeds with the corresponding movable rail rack 20 and the intermediate rail rack 40, and the movable rail rack When the high-speed 20 slides over the transmission gear 14, the reduction gear 12 drives the intermediate rail rack 40 to slide in the same direction at a low speed, so as to realize the differential movement mode of the movable rail assembly 2 and the intermediate rail assembly 4. In the actual process of pulling the drawer When the drawer is pulled, the movable rail assembly 2 will slide out first, and the intermediate rail assembly 4 will slowly follow the movable rail assembly 2 to slide out. When the movable rail assembly 2 is fully pulled out, the intermediate rail assembly 4 will slide to the limit position, and the drawer will be pulled out. The longest length, when the drawer is pushed and closed, in the same way, when the movable rail assembly 2 is pushed to the end, the middle rail assembly 4 also follows the movable rail assembly 2 and is completely received into the drawer slot of the drawer cabinet, and there is no middle rail assembly. 4. In the case of external leakage, the present invention is arranged between the movable rail assembly 2 and the intermediate rail assembly 4 for transmission connection through the movable rail rack 20, the intermediate rail rack 40 and the reduction gear mechanism, and the movable rail assembly 2 and the intermediate rail The component 4 can not only achieve the effect of synchronous operation, but also realize differential motion, the movement is more smooth and orderly, there will be no leakage of the intermediate rail component 4, and the noise and the entire opening or closing force when the slide rail is opened or closed is reduced. Evenly, make it have a better experience.

Example 2

The difference between this embodiment and Embodiment 1 is:

A buffer assembly 6 is installed on one side of the movable rail assembly 2 .

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and range of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. A reduction gear type guide mechanism for drawing a drawer, comprising a fixed rail assembly (1), a movable rail assembly (2) and an intermediate rail assembly (4), and the fixed rail assembly (1) is slidably clamped to the intermediate rail an assembly (4), wherein the middle rail assembly (4) is slidably clamped to the movable rail assembly (2) for fixing with the drawer; It is characterized in that, the fixed rail assembly (1) and the intermediate rail assembly (4) are clamped in the interlayer, and the intermediate rail assembly (4) and the movable rail assembly (2) are clamped in the interlayer. A sliding assembly, a movable rail rack (20) is fixed on the movable rail assembly (2), and an intermediate rail rack (40) opposite to the movable rail rack (20) is fixed on the intermediate rail assembly (4) , the intermediate rail rack (40) and the movable rail rack (20) are arranged along the sliding direction of the movable rail assembly (2) and the intermediate rail assembly (4), the intermediate rail rack (40) and the movable rail teeth The bars (20) are connected by transmission through a deceleration mechanism, and the deceleration mechanism is fixedly mounted on the fixed rail assembly (1) through a connecting plate assembly. 2 . The reduction gear type guide mechanism for drawer pulling according to claim 1 , wherein the sliding assembly comprises an upper bead that is slidably clamped between the movable rail assembly (2) and the intermediate rail assembly (4). 3 . A nest assembly (3) and a lower bead nest assembly (5) slidably snapped between the fixed rail assembly (1) and the middle rail assembly (4), the upper bead nest assembly (3) and the lower bead nest assembly (5) Ball grooves (30) running through the upper and lower sides are respectively provided on the board surface, and the ball grooves (30) are rotatably fixed in rolling contact with the inner wall of the interlayer of the movable rail assembly (2) and the intermediate rail assembly (4) respectively. , balls (31) rollingly connected to the inner walls of the interlayer of the fixed rail assembly (1) and the intermediate rail assembly (4). 3. The deceleration gear type guide mechanism for drawing a drawer according to claim 1, characterized in that, a sliding clip plate (10) is vertically fixed on the outer side of the fixed rail assembly (1), and the sliding clip The cross section of the connecting plate (10) is an inverted L-shape that is bent inward, the lower bead nest assembly (5) is a mouth shape with an opening at the bottom, and the lower bead nest assembly (5) is wrapped in a sliding card. On the top surface and the side edges of the connecting plate (10), the middle rail assembly (4) is integrally slidably sleeved over the sliding snap connecting plate (10) through the lower bead nest assembly (5). 4. The reduction gear type guide mechanism for drawing a drawer according to any one of claims 1-3, wherein the gear reduction mechanism comprises a reduction gear (12), a linkage gear (13) and a transmission gear (14) , the transmission gear (14) and the linkage gear (13) are jointly fixed on a rotating shaft, the rotating shaft is rotatably fixed on the plate surface of the connecting plate assembly, and the reduction gear (12) passes through the rotating shaft The connecting plate assembly is fixedly connected to the fixed rail assembly (1), and the transmission gear (14) is meshed and connected to the movable rail rack (20). The linkage gear (13) is meshed with the reduction gear (12), the reduction gear (12) is meshed with the intermediate rail rack (40), and the transmission gear (14) and the reduction gear (12) have a gear radius Like the tooth slot, the gear radius of the linkage gear (13) is smaller than the gear radius of the reduction gear (12). 5. The deceleration gear type guide mechanism for drawing a drawer according to any one of claims 1-3, wherein the movable rail rack (20) is fixed at the top position of the outer side wall of the movable rail assembly (2), A rack mounting plate (41) is vertically fixed on the bottom of the outer side wall of the intermediate rail assembly (4), the intermediate rail rack (40) is fixed on the top of the rack mounting plate (41), and the fixed rail assembly ( 1) The bottom of the outer side wall is vertically fixed with the gear plate (11), the gear plate (11) is located at the bottom of the rack mounting plate (41) and is horizontal and parallel to the rack mounting plate (41), the gear plate (11) A mounting plate is bent upward on the outer side, the mounting plate is vertically arranged on the outer side of the movable rail rack (20) and the intermediate rail rack (40), and the reduction gear mechanism is mounted on the inner surface of the mounting plate .

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