Improved three-section synchronous sliding rail

Abstract

The utility model discloses an improved three-section synchronous sliding rail which comprises a support, a lower rail, a middle rail and an upper rail, an upper bearing wheel set is arranged between the upper rail and the middle rail, and a lower bearing wheel set is arranged between the lower rail and the middle rail. A gear rack transmission mechanism is arranged between the middle rail and the upper rail, and a gear rack transmission mechanism is arranged between the middle rail and the lower rail; the gear and rack transmission mechanism comprises a transmission gear arranged on the middle rail, a first transmission rack arranged in the upper rail and a second transmission rack arranged in the lower rail. The first transmission rack is meshed with the upper end of the transmission gear; and the second transmission rack is meshed with the lower end of the transmission gear. According to the improved three-section synchronous sliding rail, true synchronization between the middle rail and the upper rail can be achieved, precise transmission of the improved three-section synchronous sliding rail is facilitated, smooth sliding is achieved, and therefore the service life of furniture such as drawers can be prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of furniture, specifically relating to an improved three-section synchronous slide rail. Background Technology

[0002] Most drawers on the market use three-section concealed slides to allow the drawer to slide outwards or retract inwards. The main components of these slides include a lower slide, an upper slide, and a middle slide positioned between them. A rack and pinion mechanism is installed between the middle slide and the upper slide, and between the middle slide and the lower slide. Because the racks in this mechanism are mounted on the upper and lower slide rack pulleys, while the gears are mounted on the middle slide, when the middle slide is immobilized under load, and the force between the upper slide and its rack pulley exceeds the frictional force, the upper slide, located above the rack pulley, can still slide relative to it. However, the racks and gears do not actually drive the middle and upper slides synchronously, resulting in a "false synchronization" problem. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides an improved three-section synchronous slide rail. The improved three-section synchronous slide rail can achieve "true synchronization" between the middle rail and the upper rail, which is beneficial for achieving precision transmission and thus can extend the service life of drawers and other furniture.

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

[0005] An improved three-section synchronous slide rail includes a bracket, a lower rail mounted on the bracket, a middle rail mounted on the lower rail, and an upper rail mounted on the middle rail. An upper load-bearing roller assembly is provided between the upper rail and the middle rail, and a lower load-bearing roller assembly is provided between the lower rail and the middle rail. Gear and rack transmission mechanisms are respectively provided between the middle rail and the upper rail, and between the middle rail and the lower rail.

[0006] The gear and rack transmission mechanism includes a transmission gear mounted on the middle rail, a first transmission rack mounted on the upper rail, and a second transmission rack mounted on the lower rail.

[0007] The first transmission rack meshes with the upper end of the transmission gear; the second transmission rack meshes with the lower end of the transmission gear.

[0008] Preferably, the transmission gear is mounted on the outer side of the middle rail via a gear carrier; the first transmission rack and the second transmission rack are respectively mounted on the outer side of the upper rail and the middle rail.

[0009] Preferably, the gear carrier is mounted on the middle rail and has an extension extending beyond the middle rail; the transmission gear is mounted on the extension.

[0010] Preferably, the gear frame is also provided with multiple sets of rollers, the upper end of which contacts the bottom of the upper rail and the lower end of which contacts the top of the lower rail.

[0011] Preferably, the upper rail includes a first upper rail connector arranged horizontally 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 horizontally to form a third upper rail connector that extends horizontally.

[0012] Preferably, the lower rail includes a first lower rail piece arranged horizontally and second lower rail pieces arranged on both sides of the first lower rail piece, wherein the second lower rail piece on the left extends vertically upward and bends inward in an arc shape to form a third lower rail piece; the second lower rail piece on the right extends vertically upward and bends inward horizontally to form a fourth lower rail piece extending horizontally.

[0013] Preferably, the center rail includes a horizontally arranged first center rail connector and second center rail connectors arranged on both sides of the first center rail connector, wherein the second center rail connectors on both sides extend vertically upward and bend horizontally outward to form a horizontally extended third center rail connector; wherein,

[0014] A fourth middle rail connector is provided between the second middle rail connector on the left and the first middle rail connector. The fourth middle rail connector is an arc segment, with its upper end connected to the bottom of the second middle rail connector on the left and its lower end connected to the first middle rail connector.

[0015] A fifth middle rail connector is provided between the second middle rail connector on the right and the first middle rail connector. The fifth middle rail connector is attached to the first middle rail connector, and one end of it is connected to the bottom of the second middle rail connector, while the other end is connected to the arc of the first middle rail connector.

[0016] Preferably, a first mounting groove is formed between the second and third upper rail connectors on the left side and the second and third middle rail connectors on the left side.

[0017] A second mounting groove is formed between the first upper rail connector, the first middle rail connector, and the second middle rail connectors on both sides;

[0018] A third mounting groove is formed between the second and third upper rail connectors on the right side, and between the second and third middle rail connectors on the right side;

[0019] A fourth mounting groove is formed between the third lower rail connector and the fourth middle rail connector;

[0020] A fifth mounting groove is formed between the first middle rail connector, the first lower rail connector, and the second lower rail connectors on both sides;

[0021] The sixth mounting groove is formed between the second lower rail connector, the fourth lower rail connector, the fifth middle rail connector, and the second middle rail electrode on the right side.

[0022] Preferably, the upper load-bearing wheel assembly includes an upper load-bearing frame, a first upper load-bearing component disposed in the middle of the upper load-bearing frame, and second upper load-bearing components disposed on the left and right sides of the upper load-bearing frame, wherein the first upper load-bearing component is located in the second mounting groove; the second upper load-bearing component on the left is installed in the first mounting groove, and the second upper load-bearing component on the right is installed in the third mounting groove.

[0023] Preferably, the lower support wheel assembly includes a lower support frame, a first lower support component disposed in the middle of the lower support frame, and a second lower support component and a third lower support component disposed on the left and right sides of the lower support frame, respectively. The first lower support component is located in the fifth mounting slot; the second lower support component is located in the fourth mounting slot; and the third lower support component is located in the sixth mounting slot.

[0024] Preferably, the upper support frame is provided with an upper guide wheel assembly, which is located in the first mounting groove and the third mounting groove respectively.

[0025] Preferably, the lower support frame is provided with a lower guide wheel assembly, which is located in the fourth mounting groove.

[0026] Preferably, the first upper load-bearing component, the second upper load-bearing component, the first lower load-bearing component, and the third lower load-bearing component are all load-bearing wheels; the load-bearing wheels are vertically arranged; the second lower load-bearing component is a ball bearing; the upper guide wheel group and the lower guide wheel group are both guide wheels, and the guide wheels are horizontally arranged.

[0027] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0028] The improved three-section synchronous slide rail of this utility model is provided with a gear and rack transmission mechanism between the upper rail and the middle rail, and between the middle rail and the lower rail. The first transmission rack is installed on the upper rail, the second transmission rack is installed on the lower rail, and the transmission gear is installed on the middle rail. Therefore, when the upper rail moves, it will inevitably drive the middle rail to move, so that the middle rail and the upper rail achieve "true synchronization". This is beneficial for the improved three-section synchronous slide rail of this utility model to achieve precise transmission and smooth sliding, thereby extending the service life of drawers and other furniture. Attached Figure Description

[0029] Figure 1This is a perspective view of the improved three-section synchronous slide rail of this utility model.

[0030] Figure 2 This is an exploded view of the improved three-section synchronous slide rail of this utility model.

[0031] Figure 3 This is a side view of the improved three-section synchronous slide rail of this utility model.

[0032] Figure 4 This is a structural diagram of the upper, middle, and lower rails.

[0033] Figure 5 This is a structural diagram of the first mounting slot, the second mounting slot, the third mounting slot, the fourth mounting slot, the fifth mounting slot, and the sixth mounting slot.

[0034] Figure 6 This is a schematic diagram of the installation of the transmission gears.

[0035] Figure 7 This is a schematic diagram of the transmission gear and gear carrier.

[0036] Figure 8 and Figure 9 These are structural schematic diagrams of the upper and lower load-bearing wheel sets from two different perspectives. Detailed Implementation

[0037] 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.

[0038] See Figures 1-9 The improved three-section synchronous slide rail of this utility model includes a bracket 1, a lower rail 4 mounted on the bracket 1, a middle rail 3 mounted on the lower rail 4, and an upper rail 2 mounted on the middle rail 3. An upper load-bearing roller group 9 is provided between the upper rail 2 and the middle rail 3, and a lower load-bearing roller group 10 is provided between the lower rail 4 and the middle rail 3. Gear and rack transmission mechanisms are respectively provided between the middle rail 3 and the upper rail 2, and between the middle rail 3 and the lower rail 4.

[0039] The bracket 1 consists of two sets, and each set of bracket 1 is L-shaped;

[0040] The gear and rack transmission mechanism includes a transmission gear 6 mounted on the middle rail 3, a first transmission rack 5 mounted on the upper rail 2, and a second transmission rack 7 mounted on the lower rail 4. The first transmission rack 5 meshes with the upper end of the transmission gear 6, and the second transmission rack 7 meshes with the lower end of the transmission gear 6.

[0041] In this embodiment, the transmission gear 6 is mounted on the gear carrier 11, and the gear carrier 11 is mounted on the middle rail 3.

[0042] See Figures 1-9 The upper rail 2 includes a first upper rail connector 201 arranged horizontally and second upper rail connectors 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 horizontally to form a third upper rail connector 203 that extends horizontally.

[0043] See Figures 1-9 The lower rail 4 includes a first lower rail piece 401 arranged horizontally and second lower rail pieces 402 arranged on both sides of the first lower rail piece 401. The second lower rail piece 402 on the left extends vertically upward and bends inward in an arc shape to form a third lower rail piece 403; the second lower rail piece 402 on the right extends vertically upward and bends inward horizontally to form a fourth lower rail piece 404 that extends horizontally.

[0044] See Figures 1-9 The center rail 3 includes a horizontally arranged first center rail connector 301 and second center rail connectors 302 arranged on both sides of the first center rail connector 301. The second center rail connectors 302 on both sides extend vertically upwards and bend horizontally outwards to form a horizontally extended third center rail connector 303.

[0045] A fourth middle rail connector 304 is provided between the second middle rail connector 302 on the left and the first middle rail connector 301. The fourth middle rail connector 304 is an arc segment, with its upper end connected to the bottom of the second middle rail connector 302 on the left and its lower end connected to the first middle rail connector 301.

[0046] A fifth middle rail connector 305 is provided between the second middle rail connector 302 on the right and the first middle rail connector 301. The fifth middle rail connector 305 is attached to the first middle rail connector 301, and one end of it is connected to the bottom of the second middle rail connector 302, while the other end is connected to the arc of the first middle rail connector 301.

[0047] See Figures 1-9 A first mounting groove A is formed between the second upper rail connector 202 and the third upper rail connector 203 on the left side, and between the second middle rail connector 302 and the third middle rail connector 303 on the left side.

[0048] A second mounting groove B is formed between the first upper rail connector 201, the first middle rail connector 301, and the second middle rail connectors 302 on both sides;

[0049] A third mounting groove C is formed between the second upper rail connector 202 and the third upper rail connector 203 on the right side, and between the second middle rail connector 302 and the third middle rail connector 303 on the right side;

[0050] A fourth mounting groove D is formed between the third lower rail connector 403 and the fourth middle rail connector 304;

[0051] A fifth mounting groove E is formed between the first middle rail connector 301, the first lower rail connector 401, and the second lower rail connectors 402 on both sides;

[0052] A sixth mounting groove F is formed between the second lower rail connector 402, the fourth lower rail connector 404, the fifth middle rail connector 305, and the second middle rail electrode 302 on the right side.

[0053] See Figures 1-9 The upper load-bearing wheel assembly 9 includes an upper load-bearing frame 903, a first upper load-bearing component 901 disposed in the middle of the upper load-bearing frame 903, and second upper load-bearing components 902 disposed on the left and right sides of the upper load-bearing frame 903. The first upper load-bearing component 901 is located in the second mounting groove B; the second upper load-bearing component 902 on the left is installed in the first mounting groove A, and the second upper load-bearing component 902 on the right is installed in the third mounting groove C.

[0054] See Figures 1-9 The lower support wheel assembly 10 includes a lower support frame 1004, a first lower support component 1001 disposed in the middle of the lower support frame 1004, and a second lower support component 1002 and a third lower support component 1003 respectively disposed on the left and right sides of the lower support frame 1004. The first lower support component 1001 is located in the fifth mounting groove E; the second lower support component 1002 is located in the fourth mounting groove D; and the third lower support component 1003 is located in the sixth mounting groove F.

[0055] See Figures 1-9 The upper support frame 903 is provided with an upper guide wheel assembly 13, which is located in the first mounting groove A and the third mounting groove C respectively; the lower support frame 1004 is provided with a lower guide wheel assembly 14, which is located in the fourth mounting groove D and the sixth mounting groove F respectively.

[0056] In this embodiment, the first upper load-bearing component 901, the second upper load-bearing component 902, the first lower load-bearing component 1001, and the third lower load-bearing component 1003 are all load-bearing wheels; the load-bearing wheels are vertically arranged; the second lower load-bearing component 1002 is a ball bearing; the upper guide wheel group 13 and the lower guide wheel group 14 are both guide wheels, and the guide wheels are horizontally arranged.

[0057] By setting the first upper load-bearing component 901, the second upper load-bearing component 902, the first lower load-bearing component 1001, the second lower load-bearing component 1002, and the third lower load-bearing component 1003, the upper rail 2 and the middle rail 3 can be supported and limited vertically, so that the improved three-section synchronous slide rail of this utility model has sufficient load-bearing capacity; at the same time, since the upper guide wheel group 13 and the lower guide wheel group 14 are set, the upper rail 2 and the middle rail 3 can be limited horizontally, thereby ensuring that the improved three-section synchronous slide rail of this utility model has better stability during operation.

[0058] See Figures 1-9 The gear frame 11 is also provided with multiple sets of rollers 12. The upper end of the roller 12 contacts the bottom of the third upper rail connecting piece 203 on the right side, and the lower side contacts the top of the fourth lower rail pole piece 404. By setting the rollers 12, the rollers 12 act between the upper rail 2 and the lower rail 4, which can ensure the distance between the upper rail 2 and the lower rail 4, thereby preventing the gear frame 11 from contacting and interfering with the upper rail 2 and the lower rail 4, and thus ensuring the smooth movement of the upper rail 2.

[0059] In addition, limit blocks 8 are respectively provided at both ends of the upper rail 2, the middle rail 3 and the lower rail 4. The limit blocks 8 can be used to limit the maximum extension stroke of the improved three-section synchronous slide rail of this utility model, and at the same time, they can prevent the upper load-bearing wheel group 9 and the lower load-bearing wheel group 10 from dislodging from the upper rail 2, the middle rail 3 and the lower rail 4.

[0060] See Figures 1-9 The improved three-section synchronous slide rail of this utility model has a gear and rack transmission mechanism between the upper rail 2 and the middle rail 3, and between the middle rail 3 and the lower rail 4. The first transmission rack 5 is installed on the upper rail 2, the second transmission rack 7 is installed on the lower rail 4, and the transmission gear 6 is installed on the middle rail 3. Therefore, when the upper rail 2 moves, it will inevitably drive the middle rail 3 to move. Thus, the middle rail 3 and the upper rail 2 achieve "true synchronization". This is beneficial for the improved three-section synchronous slide rail of this utility model to achieve precise transmission and smooth sliding, thereby extending the service life of drawers and other furniture.

[0061] 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. An improved three-section synchronous slide rail, comprising a bracket, a lower rail mounted on the bracket, a middle rail mounted on the lower rail, and an upper rail mounted on the middle rail, characterized in that, An upper load-bearing roller assembly is provided between the upper rail and the middle rail, and a lower load-bearing roller assembly is provided between the lower rail and the middle rail; gear and rack transmission mechanisms are respectively provided between the middle rail and the upper rail, and between the middle rail and the lower rail, wherein... The gear and rack transmission mechanism includes a transmission gear mounted on the middle rail, a first transmission rack mounted on the upper rail, and a second transmission rack mounted on the lower rail. The first transmission rack meshes with the upper end of the transmission gear; the second transmission rack meshes with the lower end of the transmission gear.

2. The improved three-section synchronous slide rail according to claim 1, characterized in that, The transmission gear is mounted on the outside of the middle rail via a gear carrier; the first transmission rack and the second transmission rack are respectively mounted on the outside of the upper rail and the middle rail.

3. The improved three-section synchronous slide rail according to claim 2, characterized in that, The gear carrier is mounted on the middle rail and has an extension extending beyond the middle rail; the transmission gear is mounted on the extension.

4. The improved three-section synchronous slide rail according to claim 2, characterized in that, The gear frame is also equipped with multiple sets of rollers, with the upper end of the rollers contacting the bottom of the upper rail and the lower end contacting the top of the lower rail.

5. The improved three-section synchronous slide rail according to claim 1, characterized in that, The upper rail includes a first upper rail connector that is horizontally arranged and a second upper rail connector that is arranged on both sides of the first upper rail connector. The second upper rail connectors on both sides extend vertically downward and bend inward horizontally to form a third upper rail connector that extends horizontally. The lower rail includes a first lower rail piece arranged horizontally and second lower rail pieces arranged on both sides of the first lower rail piece. The second lower rail piece on the left extends vertically upward and bends inward in an arc shape to form a third lower rail piece. The second lower rail piece on the right extends vertically upward and bends inward horizontally to form a fourth lower rail piece that extends horizontally. The center rail includes a horizontally arranged first center rail connector and second center rail connectors arranged on both sides of the first center rail connector. The second center rail connectors on both sides extend vertically upwards and bend horizontally outwards to form a horizontally extended third center rail connector. A fourth middle rail connector is provided between the second middle rail connector on the left and the first middle rail connector. The fourth middle rail connector is an arc segment, with its upper end connected to the bottom of the second middle rail connector on the left and its lower end connected to the first middle rail connector. A fifth middle rail connector is provided between the second middle rail connector on the right and the first middle rail connector. The fifth middle rail connector is attached to the first middle rail connector, and one end of it is connected to the bottom of the second middle rail connector, while the other end is connected to the arc of the first middle rail connector.

6. The improved three-section synchronous slide rail according to claim 5, characterized in that, A first mounting groove is formed between the second and third upper rail connectors on the left side, and between the second and third middle rail connectors on the left side. A second mounting groove is formed between the first upper rail connector, the first middle rail connector, and the second middle rail connectors on both sides; A third mounting groove is formed between the second and third upper rail connectors on the right side, and between the second and third middle rail connectors on the right side; A fourth mounting groove is formed between the third lower rail connector and the fourth middle rail connector; A fifth mounting groove is formed between the first middle rail connector, the first lower rail connector, and the second lower rail connectors on both sides; The sixth mounting groove is formed between the second lower rail connector, the fourth lower rail connector, the fifth middle rail connector, and the second middle rail electrode on the right side.

7. The improved three-section synchronous slide rail according to claim 6, characterized in that, The upper load-bearing wheel assembly includes an upper load-bearing frame, a first upper load-bearing component disposed in the middle of the upper load-bearing frame, and second upper load-bearing components disposed on the left and right sides of the upper load-bearing frame. The first upper load-bearing component is located in the second mounting slot; the second upper load-bearing component on the left is installed in the first mounting slot, and the second upper load-bearing component on the right is installed in the third mounting slot. The lower load-bearing wheel assembly includes a lower load-bearing frame, a first lower load-bearing component disposed in the middle of the lower load-bearing frame, and a second lower load-bearing component and a third lower load-bearing component disposed on the left and right sides of the lower load-bearing frame, respectively. The first lower load-bearing component is located in the fifth mounting slot; the second lower load-bearing component is located in the fourth mounting slot; and the third lower load-bearing component is located in the sixth mounting slot.

8. The improved three-section synchronous slide rail according to claim 7, characterized in that, The upper support frame is provided with an upper guide wheel assembly, which is located in the first mounting slot and the third mounting slot respectively.

9. The improved three-section synchronous slide rail according to claim 8, characterized in that, The lower support frame is provided with a lower guide wheel assembly, which is located in the fourth mounting slot.

10. The improved three-section synchronous slide rail according to claim 9, characterized in that, The first upper load-bearing component, the second upper load-bearing component, the first lower load-bearing component, and the third lower load-bearing component are all load-bearing wheels; the load-bearing wheels are vertically arranged; the second lower load-bearing component is a ball bearing; the upper guide wheel group and the lower guide wheel group are both guide wheels, and the guide wheels are horizontally arranged.

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