CN115371343B - Slide rail transformation ratio synchronous mechanism - Google Patents
Slide rail transformation ratio synchronous mechanism Download PDFInfo
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- CN115371343B CN115371343B CN202211006310.5A CN202211006310A CN115371343B CN 115371343 B CN115371343 B CN 115371343B CN 202211006310 A CN202211006310 A CN 202211006310A CN 115371343 B CN115371343 B CN 115371343B
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- rail
- gear
- rack
- transformation ratio
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- 230000009466 transformation Effects 0.000 title claims abstract description 34
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 19
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
- F25D25/024—Slidable shelves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Seats For Vehicles (AREA)
- Transmission Devices (AREA)
Abstract
The sliding rail transformation ratio synchronous mechanism comprises an upper rail, a middle rail and a lower rail which are symmetrically arranged, wherein the upper rail is in sliding connection with the middle rail, a first rack is arranged on one side of the middle rail, which is adjacent to the middle rail, a second rack is arranged on one side of the lower rail, transformation ratio synchronous components are rotatably connected between the upper rail and the lower rail, each transformation ratio synchronous component comprises a connecting rod, a cover plate and double gears, the cover plates and the double gears are respectively arranged on two sides of the connecting rod, one part of each double gear is connected with the corresponding cover plate, one part of each double gear is meshed with the corresponding first rack, the other part of each double gear is meshed with the corresponding second rack, and when the sliding rail is pulled out, the connecting rod drives the corresponding double gears on two sides to roll along the first rack and the corresponding second rack simultaneously so as to realize synchronous movement on two sides of the sliding rail. The sliding rail transformation ratio synchronous mechanism can realize synchronous movement of the upper rail, the middle rail and the lower rail without limiting the proportion of the upper stroke and the lower stroke, and can adjust the stroke distance and the stroke ratio according to the actual use requirement.
Description
Technical Field
The invention relates to the technical field of sliding rails, in particular to a sliding rail transformation ratio synchronous mechanism.
Background
The existing refrigerator slide rail structures in the market at present are all driven by adopting single gears or similar structures, and the transmission ratio among the slide rails is fixed to be 1:1, so that the movement distance of the upper rail relative to the middle rail is limited to be equal to the movement distance of the middle rail relative to the lower rail when the slide rails synchronously move. When the sliding rail is designed, space limitation and sliding rail travel limitation on the structural design of the sliding rail are necessarily caused for meeting the condition, and when the upper transmission ratio is fixed to be 1:1, the service life of the sliding rail is affected by poor sliding rail load capacity.
Disclosure of Invention
In view of the foregoing shortcomings of the prior art, it is an object of the present invention to provide a slide ratio synchronizing mechanism that solves one or more of the problems of the prior art.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the sliding rail transformation ratio synchronous mechanism comprises an upper rail, a middle rail and a lower rail which are symmetrically arranged, wherein the upper rail is in sliding connection with the middle rail, the middle rail is in sliding connection with the lower rail, a first rack is arranged on one side of the two middle rails adjacent to each other, a second rack is arranged on one side of the two lower rails adjacent to each other, transformation ratio synchronous components are rotatably connected between the two upper rails, each transformation ratio synchronous component comprises a connecting rod, a cover plate and double gears, the cover plates are respectively arranged on two sides of the connecting rod, the double gears are connected with the cover plates, one part of each double gear is meshed with the first rack, the other part of each double gear is meshed with the second rack, when the sliding rail is pulled out, the upper rail drives the transformation ratio synchronous components to move along the pulling-out direction, and the connecting rods drive the double gears on two sides to roll along the first rack and the second rack simultaneously so as to realize synchronous movement on two sides of the sliding rail;
the double gears comprise a first gear meshed with the first rack and a second gear meshed with the second rack, the first gear is connected to the outer side of the second gear, and the reference circle diameter of the first gear is smaller than that of the second gear;
further, the transformation ratio synchronizing assembly further comprises a rivet, the double gears are provided with second holes for the rivet to pass through, and the upper rail is provided with first holes for the rivet to pass through.
Further, at least two back buckles are arranged on the inner side of the second gear, and the cover plate is provided with a fixing hole for the back buckles to buckle in.
Further, the first gear and the second gear are integrally formed through injection molding.
Further, a third hole for inserting the connecting rod is formed in the inner side of the cover plate.
Further, at least two roller groups are arranged between the upper rail and the middle rail, and at least one roller group is arranged between the middle rail and the lower rail.
Further, a pair of first limiting blocks are arranged at the near end of the surface of the middle rail, and a pair of second limiting blocks are arranged at the far end of the surface of the middle rail and used for limiting movement of the roller set.
Further, a pair of third limiting blocks are arranged at the near end of the surface of the lower rail and used for limiting the movement of the roller set.
Further, the roller set comprises an upper retainer and a lower retainer, wherein the upper retainer and the lower retainer are respectively provided with a mounting groove, and rollers are rotatably arranged in the mounting grooves.
Compared with the prior art, the invention has the following beneficial technical effects:
when the box body is pulled out, the box body drives the two upper rails to move from the far end to the near end along the pulling-out direction, the two upper rails drive the transformation ratio synchronizing assembly to move, the first gear and the second gear of the transformation ratio synchronizing assembly respectively move along the first rack and the second rack, and the first rack and the second rack respectively drive the middle rail and the lower rail to move relative to the upper rails, so that the upper rails, the middle rail and the lower rail can synchronously move.
And (II) the upper rail, the middle rail and the lower rail can synchronously move without limiting the ratio of the upper stroke to the lower stroke, and the stroke distance and the ratio of the upper stroke to the lower stroke can be adjusted according to the actual use requirement.
And (III) further, on the premise that the space structures and strokes of the box body and the sliding rail can be met, the upper and lower stroke ratios of the sliding rail are adjusted by adjusting the reference circle diameter ratio of the first gear and the second gear, and the larger the upper and lower stroke ratio is, the better the bearing performance of the sliding rail is, and the longer the service life of the sliding rail is.
Drawings
Fig. 1 is an isometric view of a slide rail transformation ratio synchronization mechanism according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a part of a sliding rail transformation ratio synchronization mechanism according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of a pull-out state of a slide rail transformation ratio synchronization mechanism according to an embodiment of the present invention.
Fig. 4 is a back isometric view of a double gear in a slide rail transformation ratio synchronous mechanism according to an embodiment of the present invention.
Fig. 5 is a front isometric view of a double gear in a slide rail transformation ratio synchronizing mechanism according to an embodiment of the present invention.
Fig. 6 is an isometric view of a cover plate in a slide rail transformation ratio synchronization mechanism according to an embodiment of the present invention.
Fig. 7 is a perspective view showing a pulled-out state of a slide-rail transformation-ratio synchronizing mechanism according to an embodiment of the present invention.
Fig. 8 shows an enlarged view of a slide rail transformation ratio synchronizing mechanism provided in an embodiment of the invention at a.
The reference numerals in the drawings:
1. a top rail; 11. a first hole; 2. a middle rail; 21. a first limiting block; 22. a second limiting block; 23. a limiting wheel; 24. a first extension; 241. a first rack; 3. a lower rail; 31. a third limiting block; 32. a second extension; 321. a second rack; 4. a roller set; 40. an upper retainer; 41. a lower holder; 42. a mounting groove; 43. a roller; 5. a ratio-of-change synchronization component; 51. a double gear; 511. a first gear; 512. a second gear; 5121. a back buckle; 513. a second hole; 52. a cover plate; 521. a fixing hole; 522. a third hole; 53. a rivet; 54. and a connecting rod.
Detailed Description
For a better understanding of the invention with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or essential characteristics thereof.
In the description of the present invention, the positional or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In order to more clearly describe the structure of the slide ratio synchronizing mechanism, the present invention defines terms of "distal end" and "proximal end", specifically, "distal end" means an end far away from the slide pull-out direction during operation, and "proximal end" means an end near to the slide pull-out direction, taking fig. 1 as an example, the lower end of the upper rail 1 in fig. 1 is the proximal end, and the upper end of the upper rail 1 in fig. 1 is the distal end.
Example 1
Referring to fig. 1 and 2, the slide rail transformation ratio synchronization mechanism includes an upper rail 1, a middle rail 2 and a lower rail 3 which are symmetrically arranged, wherein the surface of the upper rail 1 bears a box body, the upper rail 1 is in sliding connection with the middle rail 2, the middle rail 2 is in sliding connection with the lower rail 3, a first rack 241 is arranged on one side adjacent to the middle rail 2, a second rack 321 is arranged on one side adjacent to the lower rail 3, a transformation ratio synchronization assembly 5 is rotatably connected between the upper rail 1, the transformation ratio synchronization assembly 5 includes a connecting rod 54, a cover plate 52 and a double gear 51 which are respectively arranged on two sides of the connecting rod 54, the double gear 51 is connected with the cover plate 52, one part of the double gear 51 is meshed with the first rack 241, the other part of the double gear 51 is meshed with the second rack 321, when the slide rail is pulled out, the upper rail 1 drives the transformation ratio synchronization assembly 5 to move along the pulling direction, and the connecting rod 54 drives the double gears 51 on two sides to simultaneously roll along the first rack 241 and the second rack 321 to realize synchronous movement on two sides of the slide rail.
The specific structure of the ratio synchronizing assembly 5 is described below as follows:
referring to fig. 2, 4 and 5, further, the double gear 51 includes a first gear 511 engaged with the first rack 241 and a second gear 512 engaged with the second rack 321, the first gear 511 is connected to the outside of the second gear 512, and a pitch diameter D1 of the first gear 511 is smaller than a pitch diameter D2 of the second gear 512.
Specifically, on the premise that the first gear 511 and the second gear 512 complete the first rack 241 and the second rack 321, an upper stroke S1 of the upper rail 1 moving relative to the middle rail 2 is n×pi×d1, where n represents a rotation number of the double gear 51, a stroke S of the upper rail 1 moving relative to the lower rail 3 is n×pi×d2, and a lower stroke s2=s-s1=n×pi (D2-D1) of the middle rail 2 moving relative to the lower rail 3, where D2> D1. Therefore, the up-down stroke ratio s1:s2=n pi×d1/(n pi×d2-n pi×d1) =d1/(D2-D1), and it can be seen that the up-down stroke ratio of the slide rail can be adjusted by changing the pitch circle diameter D1 of the first gear 511 and the pitch circle diameter D2 of the second gear 512.
Referring to fig. 7, when the slide rail is pulled to the farthest, the load of the upper rail 1 and the box centering rail 2 is G, and the downward supporting force of the lower rail 3 to the centering rail 2 is F1. Referring to fig. 8, the nearest roller 43 above the lower holder 41 is a first fulcrum, the farthest roller 43 below the lower holder 41 is a second fulcrum, gxl1=f1×l2 is obtained by the lever principle, the supporting force f2=g+f1 provided by the middle rail 2 is obtained by the force balance, that is f2=g+ (g×l1)/L2, where L1 is the distance from the center of gravity of the load to the first fulcrum, L2 is the length of the lower holder 41, L2 remains unchanged during the movement, and L1 is the maximum when the sliding rail is pulled furthest, and at this time F2 is the maximum.
Therefore, under the premise that the space structures and strokes of the box body and the sliding rail can be met, the larger the up-down stroke ratio is, the larger the L2 is, so that the size of the supporting force F2 of the middle rail 2 is controlled, and the bearing effect of the middle rail 2 is better.
Referring to fig. 4, further, three back buckles 5121 are disposed on the inner side of the second gear 512, the cover plate 52 is provided with a fixing hole 521 for the back buckles 5121 to buckle, and the cover plate 52 is fixedly connected with the second gear 512, so as to be capable of rotating synchronously.
Further, the first gear 511 and the second gear 512 are integrally formed by injection molding.
Referring to fig. 2, further, the ratio synchronizing assembly 5 further includes a rivet 53, the double gear 51 is provided with a second hole 513 through which the rivet 53 passes, the upper rail 1 is provided with a first hole 11 through which the rivet 53 passes, and the double gear 51 can rotate in an axial direction relative to the rivet 53.
Referring to fig. 2 and 6, further, a third hole 522 is formed in the cover 52 for inserting the connecting rod 54.
The specific structures of the upper rail 1, the middle rail 2 and the lower rail 3 are as follows:
referring to fig. 2, further, the upper rail 1 is of a semi-surrounding structure, and two sides of the surface of the middle rail 2 are provided with limiting wheels 23 to prevent the upper rail 1 from being separated from the middle rail 2. The inner side of the middle rail 2 is provided with a first extension part 24, and a first rack 241 is arranged on the first extension part 24. The lower rail 3 has a second extension portion 32 on the inner side, and a second rack 321 is disposed on the second extension portion 32.
Referring to fig. 2, further, the roller set 4 includes an upper holder 40 and a lower holder 41, and the upper holder 40 and the lower holder 41 are respectively provided with a mounting groove 42, and rollers 43 are rotatably disposed in the mounting grooves 42.
Referring to fig. 2, further, two upper retainers 40 are disposed between the upper rail 1 and the middle rail 2, and the upper retainers 40 are of a semi-surrounding structure. A lower retainer 41 is arranged between the middle rail 2 and the lower rail 3, the lower retainer 41 is of a full-surrounding structure, a part of the lower rail 3 is clamped into the lower retainer 41, the middle rail 2 surrounds the lower retainer 41, and the middle rail 2 is limited to be separated from the lower rail 3.
Referring to fig. 2, further, a pair of first stoppers 21 are disposed at the proximal end of the surface of the middle rail 2, and a pair of second stoppers 22 are disposed at the distal end thereof for restricting the movement of the upper holder 40.
Referring to fig. 2, further, a pair of third limiting blocks 31 are disposed at the near end of the surface of the lower rail 3 for limiting the movement of the lower holder 41.
The specific workflow of the present invention is described below:
when the box body is pulled out, the box body drives the two upper rails 1 to move from the far end to the near end along the pulling-out direction, the two upper rails 1 drive the transformation ratio synchronizing assembly 5 to move along the pulling-out direction, the first gear 511 and the second gear 512 of the transformation ratio synchronizing assembly 5 respectively move along the first rack 241 and the second rack 321, the connecting rod 54 drives the first gear 511 and the second gear 512 on two sides to synchronously move, and the first rack 241 and the second rack 321 respectively drive the middle rail 2 and the lower rail 3 to move relative to the upper rails 1. When fully pulled out, the upper retainer 40 between the upper rail 1 and the middle rail 2 respectively abuts against the first limiting block 21 and the second limiting block 22 at the proximal end, and the lower retainer 41 between the middle gauge and the lower rail 3 abuts against the third limiting block 31 at the proximal end.
When the box body is pushed, the box body drives the two upper rails 1 to move from the near end to the far end along the pushing direction, the two upper rails 1 drive the transformation ratio synchronous assembly 5 to move along the pushing direction, the first gear 511 and the second gear 512 of the transformation ratio synchronous assembly 5 respectively move along the first rack 241 and the second rack 321, the connecting rod 54 drives the first gear 511 and the second gear 512 on two sides to synchronously move, and the first rack 241 and the second rack 321 respectively drive the middle rail 2 and the lower rail 3 to move relative to the upper rails 1. When fully advanced, the two upper retainers 40 between the upper rail 1 and the middle rail 2 respectively bear against the first limiting block 21 and the second limiting block 22 at the far ends, and the lower retainer 41 between the middle gauge and the lower rail 3 bears against the third limiting block 31 at the far ends.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. Slide rail transformation ratio synchro mechanism, its characterized in that: the upper rail is in sliding connection with the middle rail, the middle rail is in sliding connection with the lower rail, a first rack is arranged on one side, adjacent to the middle rail, of the middle rail, a second rack is arranged on one side, adjacent to the lower rail, of the upper rail, a transformation ratio synchronizing assembly is rotatably connected between the upper rails, the transformation ratio synchronizing assembly comprises a connecting rod, a cover plate and a double gear, the cover plate and the double gear are respectively arranged on two sides of the connecting rod, the double gear is connected with the cover plate, one part of the double gear is meshed with the first rack, the other part of the double gear is meshed with the second rack, when the sliding rail is pulled out, the upper rail drives the transformation ratio synchronizing assembly to move along the pulling-out direction, and the connecting rod drives the double gears on two sides to roll along the first rack and the second rack at the same time so as to realize synchronous movement on two sides of the sliding rail;
the double gears comprise a first gear meshed with the first rack and a second gear meshed with the second rack, the first gear is connected to the outer side of the second gear, and the reference circle diameter of the first gear is smaller than that of the second gear;
the transformation ratio synchronizing assembly further comprises a rivet, the double gears are provided with second holes for the rivet to pass through, and the upper rail is provided with first holes for the rivet to pass through.
2. The slide ratio synchronizing mechanism of claim 1, wherein: at least two back buckles are arranged on the inner side of the second gear, and fixing holes for the back buckles to buckle in are formed in the cover plate.
3. The slide ratio synchronizing mechanism of claim 1, wherein: the first gear and the second gear are integrally formed through injection molding.
4. The slide ratio synchronizing mechanism of claim 1, wherein: and a third hole for the connecting rod to be inserted is formed in the inner side of the cover plate.
5. The slide ratio synchronizing mechanism of claim 1, wherein: at least two roller groups are arranged between the upper rail and the middle rail, and at least one roller group is arranged between the middle rail and the lower rail.
6. The slide ratio of rotation synchronizing mechanism of claim 5, wherein: the surface near end of the middle rail is provided with a pair of first limiting blocks, and the far end of the surface near end of the middle rail is provided with a pair of second limiting blocks used for limiting the movement of the roller group.
7. The slide ratio of rotation synchronizing mechanism of claim 5, wherein: and a pair of third limiting blocks are arranged at the near end of the surface of the lower rail and used for limiting the movement of the roller group.
8. The slide ratio of rotation synchronizing mechanism of claim 5, wherein: the roller set comprises an upper retainer and a lower retainer, wherein the upper retainer and the lower retainer are respectively provided with a mounting groove, and rollers are rotatably arranged in the mounting grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211006310.5A CN115371343B (en) | 2022-08-22 | 2022-08-22 | Slide rail transformation ratio synchronous mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211006310.5A CN115371343B (en) | 2022-08-22 | 2022-08-22 | Slide rail transformation ratio synchronous mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115371343A CN115371343A (en) | 2022-11-22 |
| CN115371343B true CN115371343B (en) | 2023-11-10 |
Family
ID=84068281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211006310.5A Active CN115371343B (en) | 2022-08-22 | 2022-08-22 | Slide rail transformation ratio synchronous mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN115371343B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3151357U (en) * | 2008-04-11 | 2009-06-18 | リ・シャオハンＬｉ， Ｓｈａｏｈａｎ | Integrated drawer rail |
| CN112890474A (en) * | 2021-03-30 | 2021-06-04 | 江苏星徽精密科技有限公司 | Synchronous slide rail with silence effect |
| CN215837931U (en) * | 2021-06-22 | 2022-02-18 | 梁巧玲 | Three-section hidden synchronous guide rail |
| CN216875636U (en) * | 2022-01-18 | 2022-07-05 | 孙庆娟 | Synchronous sliding rail mechanism and drawer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11713918B2 (en) * | 2018-04-25 | 2023-08-01 | Qingdao Haier Co., Ltd. | Engaging assembly, drawer and refrigerator having the same |
-
2022
- 2022-08-22 CN CN202211006310.5A patent/CN115371343B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3151357U (en) * | 2008-04-11 | 2009-06-18 | リ・シャオハンＬｉ， Ｓｈａｏｈａｎ | Integrated drawer rail |
| CN112890474A (en) * | 2021-03-30 | 2021-06-04 | 江苏星徽精密科技有限公司 | Synchronous slide rail with silence effect |
| CN215837931U (en) * | 2021-06-22 | 2022-02-18 | 梁巧玲 | Three-section hidden synchronous guide rail |
| CN216875636U (en) * | 2022-01-18 | 2022-07-05 | 孙庆娟 | Synchronous sliding rail mechanism and drawer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115371343A (en) | 2022-11-22 |
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