CN113229649A - Double-rack synchronous guide rail with elastic support - Google Patents
Double-rack synchronous guide rail with elastic support Download PDFInfo
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- CN113229649A CN113229649A CN202110546966.5A CN202110546966A CN113229649A CN 113229649 A CN113229649 A CN 113229649A CN 202110546966 A CN202110546966 A CN 202110546966A CN 113229649 A CN113229649 A CN 113229649A
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- synchronous
- rack
- gear
- rail
- guide rail
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 125
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
- A47B88/40—Sliding drawers; Slides or guides therefor
- A47B88/483—Sliding drawers; Slides or guides therefor with single extensible guides or parts
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Abstract
The invention discloses a double-rack synchronous guide rail with an elastic support, which comprises a fixed rail, a middle rail and a movable rail which are connected in a sliding manner, wherein the middle rail is provided with a synchronous gear, an upper synchronous rack and a lower synchronous rack are respectively fixed on the movable rail and the fixed rail, the synchronous gear can rotate around a preset transverse shaft relative to the middle rail, the upper end and the lower end of the synchronous gear are respectively meshed and matched with a tooth-shaped part on the bottom surface of the upper synchronous rack and a tooth-shaped part on the bottom surface of the lower synchronous rack, the lower synchronous rack is provided with an elastic part, and the tooth-shaped part of the lower synchronous rack is always elastically supported upwards and pressed against the synchronous gear under the action of elastic stress generated by the elastic part; effectively reduce the abrasion of the synchronous gear and improve the reliability of the synchronous gear.
Description
Technical Field
The invention relates to the technical field of guide rail structures, in particular to a double-rack synchronous guide rail with elastic supports.
Background
The common drawer guide rail is divided into an upper section, a middle section and a lower section, rollers or balls are arranged between the upper rail and the middle rail and between the middle rail and the lower rail, the rollers and the balls are restrained by a retainer, and the guide rails are in rolling friction when the drawer moves, so that the labor is saved. In the use of three-section guide rail, people find that the rolling friction force between the rails is not uniform due to the difference of the precision of parts and the assembling means, the opening and closing sequence between the slide rails is uncertain, so that the dragging resistance of the left side and the right side of the drawer is inconsistent, and the hand feeling is influenced, which is needed to be improved.
In a chinese patent "CN 110946423A a new drawer synchronous guide rail", it is disclosed that a tooth-shaped portion of a first synchronous rack is elastically pressed toward a synchronous gear under the elastic stress of an elastic portion, so that the tooth-shaped portion and the synchronous gear elastically adapt to the change of the center distance, thereby enhancing the stability of the guide rail. But the installation position and the middle rail of the synchronous gear have certain extra requirements, and the synchronous gear needs to be installed through a vertical shaft; meanwhile, as the left side and the right side of the synchronous gear are respectively meshed with the first synchronous rack and the second synchronous rack, the abrasion loss of the synchronous gear is large, and the durability of the synchronous gear is greatly challenged.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a double-rack synchronous guide rail with an elastic support.
In order to achieve the above object, the double-rack synchronous guide rail with an elastic support provided by the present invention comprises a fixed rail, a middle rail and a movable rail which are slidably connected, wherein the middle rail is provided with a synchronous gear, the movable rail and the fixed rail are respectively fixed with an upper synchronous rack and a lower synchronous rack, the synchronous gear can rotate around a preset cross shaft relative to the middle rail, the upper end and the lower end of the synchronous gear are respectively engaged and cooperated with a tooth profile part on the bottom surface of the upper synchronous rack and a tooth profile part on the bottom surface of the lower synchronous rack, the lower synchronous rack is provided with an elastic part, and the tooth profile part of the lower synchronous rack is always elastically supported and pressed against the synchronous gear under the action of an elastic stress generated by the elastic part.
Further, the central vertical line A of the upper synchronous rack is staggered with the central vertical line B of the lower synchronous rack.
Furthermore, the synchronous gear is provided with a limiting wheel which is respectively matched with the pressure bearing part of the upper synchronous rack and the pressure bearing part of the lower synchronous rack in an abutting mode.
Furthermore, long grooves are formed between the bearing portions of the upper synchronous rack and the lower synchronous rack and the gear portion.
Furthermore, the upper synchronous rack is formed with a shielding part extending downwards, and the bottom surface of the shielding part slightly protrudes out of the tooth-shaped part of the upper synchronous rack.
Further, the synchronizing gear comprises a first gear and a second gear which are coaxially arranged and synchronously rotate, and the first gear and the second gear are respectively meshed with the tooth-shaped part of the lower synchronizing rack and the tooth-shaped part of the upper synchronizing rack.
Further, still including the gear seat that supplies synchronous gear's cross axle swivelling joint, the gear seat is located on the well rail outer wall.
Furthermore, a fixed clamping edge for clamping and matching the gear seat is formed on the outer wall of the middle rail.
Furthermore, a clearance fit mode can be adopted between the transverse shaft and the middle rail or the gear seat.
Furthermore, the outermost edge of the middle rail slightly protrudes out of the outer edge of the gear part of the lower synchronous rack
The invention adopts the scheme, and has the beneficial effects that: the synchronous gear is arranged on the middle rail through the transverse shaft, and the gravity of the synchronous gear and the elastic stress action generated by the elastic part of the lower synchronous rack are utilized, so that the meshing between the synchronous gear and the upper synchronous rack as well as the meshing between the synchronous gear and the lower synchronous rack are more reliable and stable; in addition, the central vertical line A of the upper synchronous rack is staggered with the central vertical line B of the lower synchronous rack, so that the contact positions of the synchronous gear and the upper synchronous rack and the lower synchronous rack are staggered, the abrasion of the synchronous gear is effectively reduced, and the reliability of the synchronous gear is improved.
Drawings
Fig. 1 is a schematic structural view of a synchronization rail.
Fig. 2 is a schematic structural view of the middle rail and the synchronizing gear.
Fig. 3 is a schematic structural view of a synchronizing gear.
Fig. 4-5 are structural drawings of the upper synchronous rack.
Fig. 6 is a schematic structural view of a lower synchronization rack.
Fig. 7-8 are schematic structural views of a synchronizing gear with a gear seat.
FIG. 9 is a schematic view of a synchronizing gear according to another embodiment
The device comprises a fixed rail 1, a lower synchronous rack 11, an elastic part 12, a middle rail 2, a fixed clamping edge 21, a moving rail 3, a synchronous gear 4, a first gear 41, a second gear 42, a limiting wheel 5, a gear seat 6, an upper synchronous rack 31, a shielding part 32, a gear part 71, a bearing part 72 and a bearing part 73.
Detailed Description
To facilitate an understanding of the invention, the invention is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, in the present embodiment, a double-rack synchronous guide rail with an elastic support includes a fixed rail 1, a middle rail 2 and a movable rail 3, which are slidably connected, and a drawing and opening/closing action of the guide rail is realized by using a relative sliding fit among the fixed rail 1, the middle rail 2 and the movable rail 3, where structures and a matching relationship of the fixed rail 1, the middle rail 2 and the movable rail 3 belong to a conventional technology, and are not described herein again.
In the present embodiment, the synchronous device further comprises a synchronous gear 4, an upper synchronous rack 31 and a lower synchronous rack 11, wherein the synchronous gear 4 is directly or indirectly rotatably connected to the outer wall of the middle rail 2 through a preset transverse shaft. Referring to fig. 2 and 3, the synchronizing gear 4 is directly connected to the outer wall of the middle rail 2 through a horizontal shaft. Referring to fig. 6, the following further explains the embodiment of indirect rotary connection to the middle rail 2, specifically, the middle rail 2 of the present embodiment is provided with a gear seat 6 for rotary connection of the synchronizing gear 4, and the synchronizing gear 4 is connected to the gear seat 6 through a horizontal shaft, thereby realizing the rotary motion of the gear shaft around the horizontal shaft. Compared with the existing guide rail (CN 110946423A), the transverse shaft of the synchronous gear 4 is perpendicular to the drawing direction of the guide rail (which is equal to the direction perpendicular to the drawer and the load gravity direction in the drawer), and the adoption of the orientation arrangement can ensure that the synchronous gear 4, the upper synchronous rack 31 and the lower synchronous rack 11 are not separated relatively when the guide rail works by receiving external force, so that the center distances of the three are not changed, and the meshing is more standard and smooth. Accordingly, the abrasion of the synchronizing gear 4, the upper synchronizing rack 31 and the lower synchronizing rack 11 is made smaller and the meshing noise is made small.
In the embodiment, when the synchronizing gear 4 is directly or indirectly rotatably connected to the outer wall of the middle rail 2 through the horizontal shaft, the horizontal shaft and the middle rail 2 or the gear seat 6 can be in clearance fit, so that the horizontal shaft can be slightly adjusted in position to adapt to errors of actual installation, and the installation is more convenient.
Referring to fig. 4-6, in the present embodiment, the upper synchronization rack 31 and the lower synchronization rack 11 are respectively fixed on the movable rail 3 and the fixed rail 1, wherein the upper synchronization rack 31 is fixed on the outer sidewall of the movable rail 3, the tooth-shaped portion 71 of the upper synchronization rack 31 is located at the bottom position, and the tooth-shaped portion 71 extends along the drawing direction. The lower synchronizing rack 11 is fixedly arranged on the outer bottom wall of the fixed rail 1, the tooth-shaped part 71 of the lower synchronizing rack 11 is positioned at the top position, and the tooth-shaped part 71 of the lower synchronizing rack extends along the drawing direction. Thus, the toothed portion 71 of the upper synchronization rack 31 and the toothed portion 71 of the lower synchronization rack 11 are vertically opposite to each other.
Further, the upper end and the lower end of the synchronizing gear 4 are respectively meshed with the tooth-shaped part 71 of the upper synchronizing rack 31 and the tooth-shaped part 71 of the lower synchronizing rack 11 for cooperation, so that the synchronism and the stability of the fixed rail 1, the middle rail 2 and the movable rail 3 in the drawing process are realized.
Referring to fig. 4-5, in the present embodiment, a shielding portion 32 extending downward is formed on the bottom surface of the upper synchronization rack 31, and the bottom surface of the shielding portion 32 slightly protrudes from the tooth-shaped portion 71 of the upper synchronization rack 31, so that the shielding portion 32 can shield the tooth-shaped portion 71 and can also perform the functions of dust prevention and debris prevention. In addition, the outermost edge of the middle rail 2 of the present embodiment slightly protrudes from the outer edge of the gear portion 71 of the lower synchronous rack 11, so that the middle rail 2 can shield the gear portion 71 of the lower synchronous rack 11, and can also prevent dust and debris.
Referring to fig. 6, in the present embodiment, the lower synchronization rack 11 has an elastic portion 12, wherein the elastic portion 12 is composed of an elastic flexible section, and the lower synchronization rack 11 is elastically deformed upward by the upward elastic stress generated by the elastic portion 12, so that the lower synchronous rack 11 is elastically pressed against the lower end of the synchronous gear 4 by the tooth-shaped part 71 upwards under the action of the elastic stress generated by the elastic part 12, therefore, the synchronous gear 4 is in elastic contact with the tooth-shaped part 71 of the synchronous rack, so that overlarge center distance between the synchronous gear 4 and the tooth-shaped part 71 caused by relative rotation or looseness among the fixed rail 1, the middle rail 2 and the movable rail 3 can be eliminated or reduced, the upper end and the lower end of the synchronous gear 4 are better meshed with the tooth-shaped part 71 of the upper synchronous rack 31 and the tooth-shaped part 71 of the lower synchronous rack 11, and the gear and rack meshing noise and the gear skipping probability are effectively reduced.
Referring to fig. 1, in the present embodiment, the central vertical line a of the upper synchronization rack 31 is offset from the central vertical line B of the upper synchronization rack 31, so that the position where the tooth-shaped portion 71 of the upper synchronization rack 31 meshes with the synchronization gear 4 is offset from the position where the tooth-shaped portion 71 of the lower synchronization rack 11 meshes with the synchronization gear 4, that is, the meshing position of the synchronization gear 4 and the two tooth-shaped portions 71 partially overlap or do not overlap, contact wear of the synchronization gear 4 is effectively reduced, and durability is effectively improved. Meanwhile, the lower synchronous rack is ensured to be positioned in the coverage range of the middle rail, so that the dust-proof effect is achieved.
Referring to fig. 3, 7 and 8, the synchronizing gear 4 is provided with a limiting wheel 5 respectively matched with the upper synchronizing rack 31 and the lower synchronizing rack 11 in a contact manner, specifically, the upper synchronizing rack 31 and the lower synchronizing rack 11 are respectively formed with a pressing part contacting with the limiting wheel 5, wherein the pressing part is arranged adjacent to the tooth-shaped part 71. The two bearing parts respectively contact with the upper end and the lower end of the limit wheel 5, so that the diameter width of the limit wheel 5 is used as the minimum center distance, the situation that the center distance between the synchronous gear 4 and the tooth-shaped part 71 of the second synchronous rack is too small is prevented, and the abrasion of the synchronous gear 4 can be further reduced.
Further, because the surface of the pressure receiving portion 72 has a certain requirement for smoothness and flatness, if the surface is uneven, the pressure receiving portion 72 will generate a loud noise when rolling contact with the limiting wheel. In order to solve the above problem, the long grooves 73 are formed between the bearing portions 72 of the upper and lower synchronous racks 31 and 11 and the gear portion 71, and the long grooves 73 isolate the influence of the shrinkage and shrinkage of the tooth-shaped portions 71 on the bearing portions during the injection molding process, thereby ensuring the smooth and flat surface of the bearing portions 72.
Referring to fig. 8, the synchronizing gear 4 of the present embodiment may be a single integral structure, and the single synchronizing gear 4 is engaged and cooperated with the upper synchronizing gear 31 and the lower synchronizing gear 11, respectively. Referring to fig. 9, the synchronizing gear 4 of the present embodiment may also be two first gears 41 and second gears 42 which are coaxially arranged and rotate synchronously, wherein the first gears 41 and the second gears 42 are respectively engaged with the tooth-shaped portion 71 of the lower synchronizing rack 11 and the tooth-shaped portion 71 of the upper synchronizing rack 31, and the two gears are respectively engaged and cooperate to effectively reduce wear and reduce interference of engagement, so as to make the guide rail smoother during the drawing process. In addition, the stroke of the movable rail 3 and the middle rail 2 relative to the fixed rail 1 can be adjusted by adjusting the ratio of the reference circle diameters of the first gear 41 and the second gear 42, the stroke of the movable rail 3 and the middle rail 2 is reasonably distributed, the stress of each component element is improved, and the service life of the guide rail is prolonged.
Referring to fig. 7-8, further, a gear seat 6 is rotatably connected to the horizontal shaft of the synchronizing gear 4, wherein the gear seat 6 is disposed on the outer wall of the middle rail 2. Specifically, the shaping has on the outer wall of the well rail 2 of this embodiment and supplies gear seat 6 looks joint complex fixing clip limit 21, promptly, through the fashioned draw-in groove of gear seat 6 and fixing clip limit 21 looks joint cooperation to realize gear seat 6 fixed mounting on well rail 2. In addition, the clamping mode of the clamping groove and the fixed clamping edge 21 can be adjusted adaptively according to the actual product requirements, for example, a clamping hook is additionally arranged on the inner wall of the clamping groove or a groove position for matching the clamping hook is additionally arranged on the fixed clamping edge, and the position is not limited.
In the present embodiment, the above-mentioned manner that the upper and lower ends of the synchronizing gear 4 are engaged with the upper synchronizing rack 31 and the lower synchronizing rack 11 can make the thickness of the upper rail and the upper synchronizing rack 31 thinner than the upper rail structure of the existing guide rail (CN 110946423A), so that the present invention can be applied to the cabinet in north america, and therefore, the problem of collision between the upper rail or the upper synchronizing rack 31 and the cabinet does not occur, and the guide rail can be opened or closed smoothly.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents to the embodiments of the invention without departing from the scope of the invention as set forth in the claims below. Therefore, equivalent changes made according to the spirit of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a double rack synchronous guide rail with elastic support, includes sliding connection's fixed rail (1), well rail (2) and movable rail (3), wherein, well rail (2) are equipped with synchromesh gear (4), its characterized in that: an upper synchronous rack (31) and a lower synchronous rack (11) are respectively fixed on the movable rail (3) and the fixed rail (1), the synchronous gear (4) can rotate around a preset transverse shaft relative to the middle rail (2) to act, the upper end and the lower end of the synchronous gear (4) are respectively meshed and cooperated with a tooth profile part (71) on the bottom surface of the upper synchronous rack (31) and a tooth profile part (71) on the bottom surface of the lower synchronous rack (11), the lower synchronous rack (11) is provided with an elastic part (12), and the lower synchronous rack (11) is elastically supported and pressed on the synchronous gear (4) all the time under the action of elastic stress generated by the elastic part (12).
2. A double rack synchronous guide rail with elastic support according to claim 1, characterized in that: the central vertical line A of the upper synchronous rack (31) is staggered with the central vertical line B of the lower synchronous rack (11).
3. A double rack synchronous guide rail with elastic support according to claim 1, characterized in that: and the synchronous gear (4) is provided with a limiting wheel (5) which is respectively in contact fit with the pressure bearing part (72) of the upper synchronous gear (31) and the pressure bearing part (72) of the lower synchronous gear (11).
4. A double rack synchronous guide rail with elastic support according to claim 3, characterized in that: and long grooves (73) are formed between the bearing parts (72) of the upper synchronous rack (31) and the lower synchronous rack (11) and the gear parts (71).
5. A double rack synchronous guide rail with elastic support according to claim 1, characterized in that: the upper synchronous rack (31) is formed with a shielding part (32) extending downwards, and the bottom surface of the shielding part (32) slightly protrudes out of the tooth-shaped part (71) of the upper synchronous rack (31).
6. A double rack synchronous guide rail with elastic support according to claim 1, characterized in that: the synchronous gear (4) comprises a first gear (41) and a second gear (42) which are coaxially arranged and synchronously rotate, and the first gear (41) and the second gear (42) are respectively meshed with a tooth-shaped part (71) of the lower synchronous rack (11) and a tooth-shaped part (71) of the upper synchronous rack (31).
7. A double rack synchronous guide rail with elastic support according to claim 1, characterized in that: still including supplying the gear wheel seat (6) of the cross axle swivelling joint of synchromesh (4), gear wheel seat (6) are located on well rail (2) outer wall.
8. A double rack synchronous guide rail with elastic support according to claim 1, characterized in that: and a fixed clamping edge (21) for clamping and matching the gear seat (6) is formed on the outer wall of the middle rail (2).
9. A double rack synchronous guide rail with elastic support according to claim 1 or 7, characterized in that: the transverse shaft and the middle rail (2) or the gear seat (6) can adopt a clearance fit mode.
10. A double rack synchronous guide rail with elastic support according to claim 1, characterized in that: the outermost edge of the middle rail (2) slightly protrudes out of the outer edge of the gear part (71) of the lower synchronous rack (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110546966.5A CN113229649A (en) | 2021-05-19 | 2021-05-19 | Double-rack synchronous guide rail with elastic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110546966.5A CN113229649A (en) | 2021-05-19 | 2021-05-19 | Double-rack synchronous guide rail with elastic support |
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| Publication Number | Publication Date |
|---|---|
| CN113229649A true CN113229649A (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110546966.5A Pending CN113229649A (en) | 2021-05-19 | 2021-05-19 | Double-rack synchronous guide rail with elastic support |
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| CN (1) | CN113229649A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104352095A (en) * | 2014-11-10 | 2015-02-18 | 广东泰明金属制品有限公司 | Three-section synchronous hidden slide rail |
| CN105266427A (en) * | 2015-10-20 | 2016-01-27 | 黄云 | Novel three-section hidden synchronous guide rail |
| CN110946423A (en) * | 2019-12-18 | 2020-04-03 | 广东库博精密科技有限公司 | Novel drawer synchronous guide rail |
| CN111084512A (en) * | 2020-01-15 | 2020-05-01 | 黄云 | Hidden synchronous guide rail of external synchronizer |
| CN217117890U (en) * | 2021-05-19 | 2022-08-05 | 广东库博精密科技有限公司 | Double-rack synchronous guide rail with elastic support |
-
2021
- 2021-05-19 CN CN202110546966.5A patent/CN113229649A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104352095A (en) * | 2014-11-10 | 2015-02-18 | 广东泰明金属制品有限公司 | Three-section synchronous hidden slide rail |
| CN105266427A (en) * | 2015-10-20 | 2016-01-27 | 黄云 | Novel three-section hidden synchronous guide rail |
| CN110946423A (en) * | 2019-12-18 | 2020-04-03 | 广东库博精密科技有限公司 | Novel drawer synchronous guide rail |
| CN111084512A (en) * | 2020-01-15 | 2020-05-01 | 黄云 | Hidden synchronous guide rail of external synchronizer |
| CN217117890U (en) * | 2021-05-19 | 2022-08-05 | 广东库博精密科技有限公司 | Double-rack synchronous guide rail with elastic support |
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