Linkage type three-section hidden sliding rail

Abstract

The utility model discloses a linkage type three-section hidden sliding rail which comprises a support, a fixed rail arranged on the support, a middle rail arranged on the fixed rail and a movable rail arranged on the middle rail. A movable rail bearing frame is arranged between the movable rail and the middle rail, and a fixed rail bearing frame is arranged between the fixed rail and the middle rail; gear and rack transmission mechanisms are arranged between the movable rail and the middle rail, between the movable rail and the movable rail bearing frame, between the middle rail and the fixed rail and between the fixed rail and the fixed rail bearing frame; by arranging a plurality of gear and rack transmission mechanisms, the movement speed of the movable rail, the movement speed of the movable rail bearing frame, the movement speed of the middle rail and the movement speed of the fixed rail bearing frame are mutually restrained, and then the stability of the relative speed between the middle rail and the movable rail is guaranteed; therefore, the problems that the movable rail and the middle rail are overlapped, slide out and slide in, collide or misplaced, the middle rail leaks out and the like are solved.

Description

Technical Field

[0001] The utility model belongs to the field of furniture, and in particular relates to a linkage type three-section hidden slide rail. Background Art

[0002] Drawers on the market usually use three-section hidden slide rails to enable the drawer to be pulled out or retracted into the furniture body. The main components of the three-section hidden slide rails include a fixed rail, a movable rail, and a middle rail arranged between the two. In the process of pulling out or closing the drawer, the force to pull out the drawer or the force to close the drawer is usually uneven, which makes the drawer's speed uneven due to the uneven force during operation, so that the drawer will produce abnormal noise during movement, which gives the user a poor experience. In addition, the movable rail and the middle rail are slidably connected, which cannot ensure the uniformity of the relative speed, which may cause overlapping sliding out and in, collision or leakage of the misaligned middle rail. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, the utility model provides a linkage type three-section hidden slide rail, which can ensure that the relative speed of the movable rail and the middle rail is uniform, thereby avoiding problems such as overlapping sliding out and sliding in, collision or misalignment between the movable rail and the middle rail, and leakage of the middle rail.

[0004] The technical solution of the utility model to solve the above technical problems is:

[0005] A linkage type three-section hidden slide rail comprises a bracket, a fixed rail arranged on the bracket, a middle rail arranged on the fixed rail and a movable rail arranged on the middle rail, wherein:

[0006] A movable rail load-bearing frame is provided between the movable rail and the middle rail, and a fixed rail load-bearing frame is provided between the fixed rail and the middle rail;

[0007] A gear rack transmission mechanism is arranged between the movable rail and the middle rail, between the movable rail and the movable rail load-bearing frame, between the middle rail and the fixed rail, and between the fixed rail and the fixed rail load-bearing frame.

[0008] Preferably, a first gear rack transmission mechanism is arranged between the movable rail and the middle rail, and a second gear rack transmission mechanism is arranged between the movable rail and the movable rail load-bearing frame; a third gear rack transmission mechanism is arranged between the middle rail and the fixed rail, and a fourth gear rack transmission mechanism is arranged between the fixed rail and the fixed rail load-bearing frame.

[0009] Preferably, the first gear rack transmission mechanism includes a first transmission gear arranged on the movable rail and a first transmission rack arranged on the middle rail, wherein the first transmission rack is located below the first transmission gear and extends along the length direction of the middle rail; the first transmission gear is rotatably connected to the movable rail, and the lower end of the first transmission gear is meshed with the first transmission rack.

[0010] Preferably, the second gear rack transmission mechanism includes a second transmission rack arranged on the movable rail load-bearing frame, the second transmission rack is located above the first transmission gear and extends along the length direction of the movable rail load-bearing frame; the upper end of the first transmission gear is meshed with the second transmission rack.

[0011] Preferably, the third gear rack transmission mechanism includes a second transmission gear arranged on the fixed rail and a third transmission rack arranged on the middle rail, wherein the third transmission rack is located above the second transmission gear and extends along the length direction of the middle rail; the second transmission gear is rotatably connected to the fixed rail, and the upper end of the second transmission gear is meshed with the third transmission rack.

[0012] Preferably, the fourth gear rack transmission mechanism includes a fourth transmission rack arranged on the fixed rail load-bearing frame, the fourth transmission rack is located below the second transmission gear and extends along the length direction of the fixed rail load-bearing frame; the lower end of the second transmission gear is meshed with the fourth transmission rack.

[0013] Preferably, the first transmission rack and the third transmission rack are an integrated structure, that is, double-sided racks are used.

[0014] Preferably, the movable rail load-bearing frame includes a movable rail load-bearing wheel frame, and the movable rail load-bearing wheel frame is divided into two groups, and the two groups of movable rail load-bearing wheel frames are connected by a first connecting frame; the second transmission rack is installed on the first connecting frame; and each group of movable rail load-bearing wheel frames is provided with a plurality of groups of balls / rollers on the top, bottom and sides.

[0015] Preferably, the fixed rail load-bearing frame includes a fixed rail load-bearing wheel frame, the fixed rail load-bearing wheel frame is divided into two groups, and the two groups of fixed rail load-bearing wheel frames are connected by a second connecting frame; the fourth transmission rack is installed on the second connecting frame; and each group of fixed rail load-bearing wheel frames is provided with a plurality of groups of balls / rollers on the top, bottom and sides.

[0016] Preferably, the brackets are in two groups, and the two groups of brackets are arranged at both ends of the fixed rail.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] The utility model discloses a linkage type three-section hidden slide rail. A gear rack transmission mechanism is arranged between the movable rail and the middle rail, between the movable rail and the movable rail load-bearing frame, between the middle rail and the fixed rail, and between the fixed rail and the fixed rail load-bearing frame. Through the constraint relationship of the gear rack transmission mechanism, the movements of the movable rail, the movable rail load-bearing frame, the middle rail and the fixed rail load-bearing frame are mutually constrained, that is, the movement speeds of the movable rail and the middle rail are ensured to have a one-to-one corresponding relationship, thereby avoiding problems such as overlapping, sliding out, sliding in, colliding, or misaligned middle rail leakage between the movable rail and the middle rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the linkage type three-section hidden slide rail of the utility model.

[0020] Figure 2 This is an exploded view.

[0021] Figure 3 It is a schematic diagram of the state of the linked three-section hidden slide rail of the utility model when it is opened.

[0022] Figure 4 It is a schematic diagram of the state of the linked three-section hidden slide rail of the utility model when it is closed.

[0023] Figure 5 It is a structural diagram of the movable rail.

[0024] Figure 6 This is a schematic diagram of the structure of the fixed rail.

[0025] Figure 7 This is a schematic diagram of the structure of the middle track.

[0026] Figure 8 It is a structural schematic diagram of the movable rail load-bearing frame.

[0027] Fig. 9 It is a structural schematic diagram of the fixed rail load-bearing frame.

[0028] Fig.10 It is a transmission schematic diagram of four sets of gear rack transmission mechanisms. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0030] See also Figure 1-Figure 10The utility model comprises a linkage three-section hidden slide rail, comprising a bracket 1, a fixed rail 4 arranged on the bracket 1, a middle rail 3 arranged on the fixed rail 4 and a movable rail 2 arranged on the middle rail 3, wherein the bracket 1 is divided into two groups, and the two groups of brackets 1 are arranged at both ends of the fixed rail 4; a movable rail bearing frame 8 is arranged between the movable rail 2 and the middle rail 3, and a fixed rail bearing frame 9 is arranged between the fixed rail 4 and the middle rail 3; a rack and pinion transmission mechanism is arranged between the movable rail 2 and the middle rail 3, between the movable rail 2 and the movable rail bearing frame 8, between the middle rail 3 and the fixed rail 4, and between the fixed rail 4 and the fixed rail bearing frame 9. Specifically, a first rack and pinion transmission mechanism is arranged between the movable rail 2 and the middle rail 3, and a second rack and pinion transmission mechanism is arranged between the movable rail 2 and the movable rail bearing frame 8; a third rack and pinion transmission mechanism is arranged between the middle rail 3 and the fixed rail 4, and a fourth rack and pinion transmission mechanism is arranged between the fixed rail 4 and the fixed rail bearing frame 9.

[0031] Through the above arrangement, when the movable rail 2 moves, since gear rack transmission mechanisms are provided between the movable rail 2 and the middle rail 3, between the movable rail 2 and the movable rail load-bearing frame 8, between the middle rail 3 and the fixed rail 4, and between the fixed rail 4 and the fixed rail load-bearing frame 9, the movements of the movable rail 2, the movable rail load-bearing frame 8, the middle rail 3 and the fixed rail load-bearing frame 9 are mutually constrained through the constraint relationship of the gear rack transmission mechanism, that is, it is ensured that the movement speeds of the movable rail 2 and the middle rail 3 have a one-to-one corresponding relationship, thereby avoiding overlapping, sliding out, sliding in, collision or leakage of the misaligned middle rail between the movable rail 2 and the middle rail 3.

[0032] See also Figure 1-Figure 10 The first gear rack transmission mechanism includes a first transmission gear 6 arranged on the movable rail 2 and a first transmission rack arranged on the middle rail 3, wherein the first transmission rack is located below the first transmission gear 6 and extends along the length direction of the middle rail 3; the first transmission gear 6 is rotatably connected to the movable rail 2, and the lower end of the first transmission gear 6 is meshed with the first transmission rack.

[0033] See also Figure 1-Figure 10 The second gear rack transmission mechanism includes a second transmission rack 803 arranged on the movable rail load-bearing frame 8, the second transmission rack 803 is located above the first transmission gear 6 and extends along the length direction of the movable rail load-bearing frame 8; the upper end of the first transmission gear 6 is meshed with the second transmission rack 803.

[0034] See also Figure 1-Figure 10The third gear rack transmission mechanism includes a second transmission gear 7 arranged on the fixed rail 4 and a third transmission rack arranged on the middle rail 3, wherein the third transmission rack is located above the second transmission gear 7 and extends along the length direction of the middle rail 3; the second transmission gear 7 is rotatably connected to the fixed rail 4, and the upper end of the second transmission gear 7 is meshed with the third transmission rack.

[0035] See also Figure 1-Figure 10 The fourth gear rack transmission mechanism includes a fourth transmission rack 903 arranged on the fixed rail load-bearing frame 9, and the fourth transmission rack 903 is located below the second transmission gear 7 and extends along the length direction of the fixed rail load-bearing frame 9; the lower end of the second transmission gear 7 is meshed with the fourth transmission rack 903.

[0036] In this embodiment, the first transmission rack and the third transmission rack are an integrated structure, that is, a double-sided rack 5 is adopted, the upper end of the double-sided rack 5 is meshed with the first transmission gear 6, and the lower end is meshed with the second transmission gear 7.

[0037] See also Figure 1-Figure 10 The movable rail load-bearing frame 8 includes a movable rail load-bearing wheel frame 801, and the movable rail load-bearing wheel frame 801 is divided into two groups, and the two groups of movable rail load-bearing wheel frames 801 are connected by a first connecting frame; the second transmission rack 803 is installed on the first connecting frame; each group of movable rail load-bearing wheel frames 801 is provided with a plurality of groups of balls / rollers 802 on the top, bottom and side. By providing the balls / rollers 802, the movement of the movable rail load-bearing frame 8 can be guided, and the friction between the movable rail 2 and the middle rail 3 can also be reduced, so that the movement of the movable rail 2 is smoother.

[0038] See also Figure 1-Figure 10 The fixed rail load-bearing frame 9 includes a fixed rail load-bearing wheel frame 901, and the fixed rail load-bearing wheel frame 901 is divided into two groups, and the two groups of fixed rail load-bearing wheel frames 901 are connected by a second connecting frame; the fourth transmission rack 903 is installed on the second connecting frame; each group of fixed rail load-bearing wheel frames 901 is provided with a plurality of groups of balls / rollers 902 on the top, bottom and side; by providing the balls / rollers 902, the movement of the fixed rail load-bearing frame 9 can be guided, and the friction between the fixed rail 4 and the middle rail 3 can also be reduced, so that the movement of the middle rail 3 is smoother.

[0039] In addition to the above-mentioned structure, other structures of the linkage type three-section hidden slide rail of the present invention can be implemented with reference to the existing three-section hidden slide rail.

[0040] The above is a preferred implementation mode of the present invention, but the implementation mode of the present invention is not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A linkage type three-section hidden slide rail, comprising a bracket, a fixed rail arranged on the bracket, a middle rail arranged on the fixed rail, and a movable rail arranged on the middle rail, wherein: A movable rail load-bearing frame is provided between the movable rail and the middle rail, and a fixed rail load-bearing frame is provided between the fixed rail and the middle rail; the characteristic is that: A gear rack transmission mechanism is arranged between the movable rail and the middle rail, between the movable rail and the movable rail load-bearing frame, between the middle rail and the fixed rail, and between the fixed rail and the fixed rail load-bearing frame.

2. The linkage type three-section hidden slide rail according to claim 1, characterized in that: A first gear rack transmission mechanism is arranged between the movable rail and the middle rail, a second gear rack transmission mechanism is arranged between the movable rail and the movable rail load-bearing frame; a third gear rack transmission mechanism is arranged between the middle rail and the fixed rail, a fourth gear rack transmission mechanism is arranged between the fixed rail and the fixed rail load-bearing frame.

3. The linkage type three-section hidden slide rail according to claim 2 is characterized in that: The first gear rack transmission mechanism includes a first transmission gear arranged on the movable rail and a first transmission rack arranged on the middle rail, wherein the first transmission rack is located below the first transmission gear and extends along the length direction of the middle rail; the first transmission gear is rotatably connected to the movable rail, and the lower end of the first transmission gear is meshed with the first transmission rack.

4. The linkage type three-section hidden slide rail according to claim 3 is characterized in that: The second gear rack transmission mechanism includes a second transmission rack arranged on the movable rail load-bearing frame, the second transmission rack is located above the first transmission gear and extends along the length direction of the movable rail load-bearing frame; the upper end of the first transmission gear is meshed with the second transmission rack.

5. The linkage type three-section hidden slide rail according to claim 4 is characterized in that: The third gear rack transmission mechanism includes a second transmission gear arranged on the fixed rail and a third transmission rack arranged on the middle rail, wherein the third transmission rack is located above the second transmission gear and extends along the length direction of the middle rail; the second transmission gear is rotatably connected to the fixed rail, and the upper end of the second transmission gear is meshed with the third transmission rack.

6. The linkage type three-section hidden slide rail according to claim 5, characterized in that: The fourth gear rack transmission mechanism includes a fourth transmission rack arranged on the fixed rail load-bearing frame, the fourth transmission rack is located below the second transmission gear and extends along the length direction of the fixed rail load-bearing frame; the lower end of the second transmission gear is meshed with the fourth transmission rack.

7. The linkage type three-section hidden slide rail according to claim 6, characterized in that: The first transmission rack and the third transmission rack are an integrated structure, that is, double-sided racks are used.

8. The linkage type three-section hidden slide rail according to claim 4, characterized in that: The movable rail load-bearing frame includes a movable rail load-bearing wheel frame, and the movable rail load-bearing wheel frame is divided into two groups, and the two groups of movable rail load-bearing wheel frames are connected by a first connecting frame; the second transmission rack is installed on the first connecting frame; and a plurality of groups of balls / rollers are arranged on the top, bottom and side of each group of movable rail load-bearing wheel frames.

9. The linkage type three-section hidden slide rail according to claim 6, characterized in that: The fixed rail load-bearing frame includes a fixed rail load-bearing wheel frame, and the fixed rail load-bearing wheel frame is divided into two groups, and the two groups of fixed rail load-bearing wheel frames are connected by a second connecting frame; the fourth transmission rack is installed on the second connecting frame; and a plurality of groups of balls / rollers are arranged on the top, bottom and sides of each group of fixed rail load-bearing wheel frames.

10. The linkage type three-section hidden slide rail according to claim 1, characterized in that: The brackets are divided into two groups, and the two groups of brackets are arranged at two ends of the fixed rail.

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