Sliding rail with synchronous linkage function

Abstract

The utility model discloses a slide rail with a synchronous linkage function, which comprises a lower rail, a middle rail arranged on the lower rail and an upper rail arranged on the middle rail, an upper bearing wheel carrier is arranged between the upper rail and the middle rail, and a lower bearing wheel carrier is arranged between the lower rail and the middle rail. The gear carrier is arranged on the lower rail; the gear carrier is positioned on the outer sides of the upper rail, the middle rail and the lower rail; synchronous linkage mechanisms are arranged between the upper rail and the middle rail and between the middle rail and the gear frame, and each synchronous linkage mechanism comprises a gear set arranged on the middle rail, a first rack arranged on the outer side of the upper rail and a second rack arranged on the gear frame. And gears in the gear set are respectively meshed with the first rack and the second rack. The sliding rail with the synchronous linkage function is better in synchronous linkage performance, so that better user experience is provided for a user.

Description

Technical Field

[0001] This utility model belongs to the field of home furnishing manufacturing, and specifically relates to a slide rail with synchronous linkage function. Background Technology

[0002] Three-section drawer slides are a common type of furniture hardware, widely used in furniture with drawers. Three-section slides have a longer draw distance than two-section slides, allowing the drawer to be fully extended, thus making them more practical. Three-section slides mainly consist of a fixed rail, a middle rail, and a top rail. Rolling elements are installed between the fixed rail and the middle rail, and between the middle rail and the top rail, to ensure smooth sliding. These rolling elements are mounted on cages. Typically, the middle rail also has a gear that engages with the racks on the cages of the two sets of rolling elements to ensure the synchronization of the middle and top rail's drawer movement.

[0003] However, the synchronization of the upper, middle and lower rails in the existing three-section slide rails on the market is poor, which cannot provide users with a good user experience. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a slide rail with synchronous linkage function, which has better synchronous linkage and thus provides users with a better user experience.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is:

[0006] A slide rail with synchronous linkage function includes a lower rail, a middle rail disposed on the lower rail, and an upper rail disposed on the middle rail, wherein an upper load-bearing wheel frame is disposed between the upper rail and the middle rail, and a lower load-bearing wheel frame is disposed between the lower rail and the middle rail;

[0007] It also includes a gear carrier mounted on the lower rail; the gear carrier is located outside the upper rail, middle rail and lower rail; a synchronous linkage mechanism is provided between the upper rail and the middle rail and between the middle rail and the gear carrier, the synchronous linkage mechanism includes a gear set mounted on the middle rail, a first rack mounted on the outside of the upper rail and a second rack mounted on the gear carrier, the gears in the gear set meshing with the first rack and the second rack respectively.

[0008] Preferably, the gear set includes a first gear; the upper end of the first gear meshes with the first rack, and the lower end meshes with the second rack.

[0009] Preferably, the gear set includes a first gear and a second gear arranged coaxially; the diameter of the first gear is larger than the diameter of the second gear; the first gear meshes with the first rack; and the second gear meshes with the second rack.

[0010] Preferably, the upper rail includes a first upper rail connector arranged horizontally and a second upper rail connector arranged on both sides of the first upper rail connector, wherein the second upper rail connectors on both sides extend vertically downward and bend inward in an arc to form a third upper rail connector.

[0011] The lower rail includes a first lower rail piece arranged horizontally and a second lower rail piece arranged to the left / right of the first lower rail piece; the second lower rail piece extends vertically upward and bends horizontally to the right / left to form a third lower rail piece that extends horizontally.

[0012] The center rail includes a first center rail connector arranged horizontally and second center rail connectors arranged on both sides of the first center rail connector; the upper ends of the second center rail connectors on both sides are connected to the first center rail connector by an arc, and the lower ends extend vertically downward and bend horizontally to the left / right to form a third center rail connector that extends horizontally.

[0013] Preferably, the gear frame is fixed to the lower load-bearing wheel frame by a connector.

[0014] Preferably, the gear frame is provided with a limiting groove, and multiple sets of limiting blocks are provided on the side wall of one side of the limiting groove; the multiple sets of limiting blocks are arranged along the extension direction of the limiting groove; the third middle rail connecting piece on one side of the middle rail is located in the limiting groove and below the limiting block.

[0015] Preferably, the gear frame is provided with multiple sets of limiting rollers in the limiting groove. The multiple sets of limiting rollers are vertically rotatably connected to the side wall on the other side of the limiting groove and arranged along the extension direction of the limiting groove. The wheel surfaces of the limiting rollers respectively contact the second middle rail connecting piece on one side of the middle rail and the second lower rail connecting piece of the lower rail.

[0016] Preferably, the lower rail is further provided with an auxiliary wheel assembly, which includes an auxiliary wheel frame mounted on the first lower rail connecting piece and an auxiliary wheel mounted on the auxiliary wheel frame. The auxiliary wheel is rotatably connected to the auxiliary wheel frame, and the wheel surface of the auxiliary wheel contacts the third upper rail connecting piece on one side of the upper rail.

[0017] Preferably, the gear frame is provided with mounting blocks, and there are multiple sets of mounting blocks extending along the length direction of the gear frame; the lower support frame is provided with mounting grooves that cooperate with the mounting blocks.

[0018] Preferably, the upper load-bearing wheel frame includes an upper load-bearing frame, a first upper load-bearing component and a second upper load-bearing component disposed on the upper load-bearing frame, wherein the first upper load-bearing component is located between the first upper rail joint and the first middle rail joint; the second upper load-bearing component is disposed on both sides of the first upper load-bearing component and is respectively located between the second middle rail joint and the third upper rail joint on both sides; the lower load-bearing wheel frame includes a lower load-bearing frame, a first lower load-bearing component and a second lower load-bearing component disposed on the lower load-bearing frame, wherein the first lower load-bearing component is located between the first middle rail joint and the third lower rail joint; the second lower load-bearing component is located between the third lower rail joint and the third middle rail joint on one side.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0020] 1. The slide rail with synchronous linkage function of this utility model has a first rack on the outer side of the upper rail, a second rack on the gear frame, and a gear set on the middle rail that meshes with the first rack and the second rack. This can ensure that the upper rail, middle rail and lower rail are linked synchronously, thus giving users a better user experience.

[0021] 2. In the slide rail with synchronous linkage function of this utility model, the first rack, the second rack, and the gear set are located on the outside of the upper rail, the middle rail, and the lower rail, respectively. Therefore, it is more convenient to install and maintain the first rack, the second rack, and the gear set. Moreover, it is not necessary to open the slide rail when replacing the corresponding components, making the operation more convenient. Attached Figure Description

[0022] Figure 1 This is a perspective view of the first specific embodiment of the slide rail with synchronous linkage function of this utility model.

[0023] Figure 2 This is the first exploded view of the slide rail with synchronous linkage function of this utility model.

[0024] Figure 3 This is a second exploded view of the slide rail with synchronous linkage function of this utility model.

[0025] Figure 4 This is a perspective view of the slide rail with synchronous linkage function of this utility model (without damper).

[0026] Figure 5 This is a side view of the slide rail with synchronous linkage function of this utility model.

[0027] Figure 6 This is a side view of the top, middle, and bottom rails.

[0028] Figure 7 This is a side view of the synchronous linkage mechanism.

[0029] Figure 8 This is a three-dimensional view of the gear carrier and the lower load-bearing wheel carrier.

[0030] Figure 9 This is a side view of the gear carrier and the lower load-bearing wheel carrier.

[0031] Figure 10 This is a three-dimensional view of the upper load-bearing wheel frame.

[0032] Figure 11 This is a schematic diagram of the state of the slide rail with synchronous linkage function when it is closed according to this utility model.

[0033] Figure 12 This is a schematic diagram of the slide rail with synchronous linkage function of this utility model when it is deployed.

[0034] Figure 13 This is a perspective view of the second specific embodiment of the slide rail with synchronous linkage function of this utility model. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0036] Example 1

[0037] See Figures 1-12 The slide rail with synchronous linkage function of this utility model includes a lower rail 1, a middle rail 3 set on the lower rail 1, and an upper rail 2 set on the middle rail 3. An upper load-bearing wheel frame 9 is provided between the upper rail 2 and the middle rail 3, and a lower load-bearing wheel frame 10 is provided between the lower rail 1 and the middle rail 3.

[0038] See Figures 1-12 The slide rail with synchronous linkage function of this utility model also includes a gear frame 11 disposed on the lower rail 1; the gear frame 11 is located outside the upper rail 2, the middle rail 3 and the lower rail 1, and is connected to the lower load-bearing wheel frame 10; a synchronous linkage mechanism is provided between the upper rail 2 and the middle rail 3 and between the middle rail 3 and the gear frame 11, wherein,

[0039] The synchronous linkage mechanism includes a gear set 5 disposed on the outer side of the middle rail 3, a first rack 4 disposed on the outer side of the upper rail 2, and a second rack 7 disposed on the gear carrier 11. The gear set 5 includes a first gear 501 and a second gear 502 coaxially disposed. The diameter of the first gear 501 is larger than the diameter of the second gear 502. The first gear 501 meshes with the first rack 4, and the second gear 502 meshes with the second rack 7.

[0040] See Figures 1-12 The upper rail 2 includes a first upper rail connector 201 arranged horizontally and a second upper rail connector 202 arranged on both sides of the first upper rail connector 201. The second upper rail connectors 202 on both sides extend vertically downward and bend inward in an arc to form a third upper rail connector 203.

[0041] See Figures 1-12 The lower rail 1 includes a first lower rail piece 101 arranged horizontally and a second lower rail piece 102 arranged to the left / right of the first lower rail piece 101; the second lower rail piece 102 extends vertically upward and bends horizontally to the right / left to form a third lower rail piece 103 that extends horizontally.

[0042] See Figures 1-12 The middle rail 3 includes a first middle rail connector 301 arranged horizontally and second middle rail connectors 302 arranged on both sides of the first middle rail connector 301; the upper ends of the second middle rail connectors 302 on both sides are connected to the first middle rail connector 301 by an arc, and the lower ends extend vertically downward and bend horizontally to the left / right to form a third middle rail connector 303 extending horizontally.

[0043] See Figures 1-12 The gear carrier 11 is provided with a limiting groove, and multiple sets of limiting blocks 111 are provided on the side wall of one side of the limiting groove; the multiple sets of limiting blocks 111 are arranged along the extension direction of the limiting groove; the third middle rail connecting piece 303 on one side of the middle rail 3 is located in the limiting groove and below the limiting block 111; with the above arrangement, it can be prevented that the gear carrier 11 floats too much up and down when sliding, which would cause the second gear 502 to mesh inaccurately with the second rack 7.

[0044] See Figures 1-12 The gear frame 11 is provided with multiple sets of limiting rollers 112 in the limiting groove. The multiple sets of limiting rollers 112 are vertically rotatably connected to the side wall on the other side of the limiting groove and are arranged along the extension direction of the limiting groove. The wheel surface of the limiting rollers 112 contacts the second middle rail connecting piece 302 on one side of the middle rail 3 and the second lower rail connecting piece 102 of the lower rail 1. By setting the limiting rollers 112, the middle rail 3 can be limited and guided.

[0045] See Figures 1-12The lower rail 1 is also provided with an auxiliary wheel set 12, which includes an auxiliary wheel frame mounted on the first lower rail connecting piece 101 and an auxiliary wheel mounted on the auxiliary wheel frame. The auxiliary wheel is rotatably connected to the auxiliary wheel frame, and the wheel surface of the auxiliary wheel contacts the third upper rail connecting piece 203 on one side of the upper rail 2. By setting the auxiliary wheel set 12, the upper rail 2 can be supported and guided, thereby avoiding the "jamming" phenomenon of the upper rail 2 during movement.

[0046] See Figures 1-12 The upper load-bearing wheel frame 9 includes an upper load-bearing frame, a first upper load-bearing component 901 and a second upper load-bearing component 902 disposed on the upper load-bearing frame, wherein the first upper load-bearing component 901 is located between the first upper rail connector 201 and the first middle rail connector 301; the second upper load-bearing component 902 is disposed on both sides of the first upper load-bearing component 901, and is respectively located between the second middle rail connector 302 and the third upper rail connector 203 on both sides;

[0047] The lower support wheel frame 10 includes a lower support frame 1001, a first lower support component 1002 and a second lower support component 1003 disposed on the lower support frame 1001, wherein the first lower support component 1002 is located between the first middle rail connector 301 and the third lower rail connector 103; the second lower support component 1003 is located between the third lower rail connector 103 and the third middle rail connector 303 on one side.

[0048] In this embodiment, the first upper load-bearing component 901, the first lower load-bearing component 1002, and the second lower load-bearing component 1003 are all load-bearing wheel sets; the second upper load-bearing component 902 is a ball bearing.

[0049] In addition, a guide wheel assembly 1004 is provided on the lower support frame 1001. The guide wheel assembly 1004 is rotatably connected to the lower support frame 1001, and the wheel surface of the guide wheel assembly 1004 contacts the second middle rail connecting piece 302 on one side.

[0050] By setting the upper load-bearing wheel frame 9 and the lower load-bearing wheel frame 10, the upper rail 2 and the middle rail 3 can be supported and limited. While ensuring the support performance of the slide rail of this utility model, the upper rail 2 and the middle rail 3 can also be prevented from shaking during the movement, thereby improving the working stability of the slide rail of this utility model.

[0051] See Figures 1-12The gear frame 11 is provided with mounting blocks 113, and there are multiple sets of mounting blocks 113 extending along the length of the gear frame 11. The lower support frame 1001 is provided with mounting grooves that mate with the mounting blocks 113. Through the above configuration, the gear frame 11 and the lower support wheel frame 10 can be connected, thereby enabling the gear frame 11 and the lower support wheel frame 10 to move synchronously.

[0052] See Figures 1-12 Limiting baffles are provided on the front and rear sides of the upper rail 2, middle rail 3 and lower rail 1. The movement stroke of the upper rail 2 and the middle rail 3 is limited by the limiting baffles, thereby limiting the maximum opening length and closing length of the slide rail of this utility model, so as to avoid damage caused by excessive opening or closing of the slide rail of this utility model.

[0053] See Figures 1-12 A damper 8 is provided on one side of the upper rail 3.

[0054] See Figures 1-13 Compared to Embodiment 2, in this embodiment, the upper rail 2 is provided with a first rack 4 and the middle rail 3 is provided with a first gear 501 that meshes with the first rack 4, thereby achieving synchronous movement of the upper rail 2 and the middle rail 3. However, since the upper rail 2 and the middle rail 3 move at the same speed, the length of the middle rail 3 must be set shorter. If the length of the middle rail 3 is set too long, the middle rail 3 will have fully reset when the slide rail closes (at which point the middle rail 3 can no longer move), but the upper rail 2 will not have fully reset, which will cause the slide rail to not be fully closed. Therefore, it is necessary to control the length of the middle rail 3 so that the upper rail 2 and the middle rail 3 reset synchronously, or the upper rail 2 resets before the middle rail 3; only in this way can the slide rail be closed smoothly. However, although controlling the length of the middle rail 3 can ensure that the slide rail is fully closed, when the slide rail is fully open, the distance between the outer end of the middle rail 3 (i.e. the end away from the lower rail 1) and the outer end of the upper rail 2 (i.e. the end away from the lower rail 1) is large. This will result in the fulcrum position between the middle rail 3 and the upper rail 2 being far from the outer end of the upper rail 2, thus resulting in poor support performance of the slide rail.

[0055] This embodiment incorporates a synchronous linkage mechanism between the upper rail 2 and the middle rail 3, and between the middle rail 3 and the gear carrier 11. This mechanism includes a gear set 5 on the middle rail 3, a first rack 4 on the upper rail 2, and a second rack 7 on the lower rail 1. The gear set 5 includes a first gear 501 and a second gear 502 coaxially arranged. The diameter of the first gear 501 is larger than the diameter of the second gear 502. The first gear 501 meshes with the first rack 4, and the second gear 502 meshes with the second rack 7. This arrangement allows the upper rail 2 to move, driving the first rack 4, which in turn drives the first gear 501. Since the first gear 501 and the second gear 502 are coaxially connected, the second gear 502 also rotates accordingly. The angular velocities of wheel 501 and the second gear 502 are the same. Since the diameter of the second gear 502 is smaller than the diameter of the first gear 501, the linear velocity of the second gear 502 will be less than the linear velocity of the first gear 501. Therefore, the movement speed of the upper rail 2 will be greater than the movement speed of the middle rail 3 and the lower rail 1 (the movement speeds of the middle rail 3 and the lower rail 1 are the same). Since the movement speed of the upper rail 2 is greater than the movement speeds of the middle rail 3 and the lower rail 1, compared with the existing method (i.e., the movement speeds of the upper rail 2 and the middle rail 3 are the same), the length of the middle rail 3 in the slide rail with synchronous linkage function of this utility model can be set to be longer. In this way, while ensuring that the slide rail can close smoothly, the fulcrum position between the upper rail 2 and the middle rail 3 is also closer to the outer end of the upper rail 2 when the slide rail is unfolded. This makes the support performance of the slide rail of this utility model better.

[0056] Example 2

[0057] See Figure 13 The difference between this embodiment and Embodiment 1 is that:

[0058] The gear set 5 includes a first gear 501; the upper end of the first gear 501 meshes with the first rack 4, and the lower end meshes with the second rack 6; this ensures that the upper rail 2, the middle rail 3 and the gear carrier 11 move at the same speed.

[0059] The remaining structure of the slide rail in this embodiment can be implemented in accordance with Embodiment 1.

[0060] The above are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A slide rail with synchronous linkage function, characterized in that, It includes a lower rail, a middle rail set on the lower rail, and an upper rail set on the middle rail, wherein an upper load-bearing wheel frame is provided between the upper rail and the middle rail, and a lower load-bearing wheel frame is provided between the lower rail and the middle rail; It also includes a gear carrier mounted on the lower rail; the gear carrier is located outside the upper rail, middle rail and lower rail; a synchronous linkage mechanism is provided between the upper rail and the middle rail and between the middle rail and the gear carrier, the synchronous linkage mechanism includes a gear set mounted on the middle rail, a first rack mounted on the outside of the upper rail and a second rack mounted on the gear carrier, the gears in the gear set meshing with the first rack and the second rack respectively.

2. The slide rail with synchronous linkage function according to claim 1, characterized in that, The gear set includes a first gear; the upper end of the first gear meshes with the first rack, and the lower end meshes with the second rack.

3. The slide rail with synchronous linkage function according to claim 1, characterized in that, The gear set includes a first gear and a second gear arranged coaxially; the diameter of the first gear is larger than the diameter of the second gear; the first gear meshes with the first rack; and the second gear meshes with the second rack.

4. The slide rail with synchronous linkage function according to any one of claims 1-3, characterized in that, The upper rail includes a horizontally arranged first upper rail connector and second upper rail connectors arranged on both sides of the first upper rail connector, wherein the second upper rail connectors on both sides extend vertically downward and bend inward arc to form a third upper rail connector. The lower rail includes a first lower rail piece arranged horizontally and a second lower rail piece arranged to the left / right of the first lower rail piece; the second lower rail piece extends vertically upward and bends horizontally to the right / left to form a third lower rail piece that extends horizontally. The center rail includes a first center rail connector arranged horizontally and second center rail connectors arranged on both sides of the first center rail connector; the upper ends of the second center rail connectors on both sides are connected to the first center rail connector by an arc, and the lower ends extend vertically downward and bend horizontally to the left / right to form a third center rail connector that extends horizontally.

5. The slide rail with synchronous linkage function according to claim 4, characterized in that, The gear frame is fixed to the lower load-bearing wheel frame by a connector.

6. The slide rail with synchronous linkage function according to claim 5, characterized in that, The gear frame is provided with a limiting groove, and multiple sets of limiting blocks are provided on the side wall of one side of the limiting groove; the multiple sets of limiting blocks are arranged along the extension direction of the limiting groove; the third middle rail connecting piece on one side of the middle rail is located in the limiting groove and below the limiting block.

7. The slide rail with synchronous linkage function according to claim 6, characterized in that, The gear frame is provided with multiple sets of limiting rollers in the limiting groove. The multiple sets of limiting rollers are vertically rotatably connected to the side wall on the other side of the limiting groove and are arranged along the extension direction of the limiting groove. The wheel surface of the limiting rollers contacts the second middle rail connecting piece on one side of the middle rail and the second lower rail connecting piece of the lower rail, respectively.

8. The slide rail with synchronous linkage function according to claim 4, characterized in that, An auxiliary wheel assembly is also provided on the lower rail. The auxiliary wheel assembly includes an auxiliary wheel frame mounted on the first lower rail connector and an auxiliary wheel mounted on the auxiliary wheel frame. The auxiliary wheel is rotatably connected to the auxiliary wheel frame, and the wheel surface of the auxiliary wheel contacts the third upper rail connector on one side of the upper rail.

9. The slide rail with synchronous linkage function according to claim 4, characterized in that, The gear frame is provided with mounting blocks, and there are multiple sets of mounting blocks extending along the length of the gear frame; the lower load-bearing wheel frame is provided with mounting grooves that cooperate with the mounting blocks.

10. The slide rail with synchronous linkage function according to claim 4, characterized in that, The upper load-bearing wheel frame includes an upper load-bearing frame, a first upper load-bearing component and a second upper load-bearing component disposed on the upper load-bearing frame, wherein the first upper load-bearing component is located between the first upper rail joint and the first middle rail joint; the second upper load-bearing component is disposed on both sides of the first upper load-bearing component and is respectively located between the second middle rail joint and the third upper rail joint on both sides; the lower load-bearing wheel frame includes a lower load-bearing frame, a first lower load-bearing component and a second lower load-bearing component disposed on the lower load-bearing frame, wherein the first lower load-bearing component is located between the first middle rail joint and the third lower rail joint; the second lower load-bearing component is located between the third lower rail joint and the third middle rail joint on one side.

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