CN110811162B - Movable speed adjustable compact shelf - Google Patents
Movable speed adjustable compact shelf Download PDFInfo
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- CN110811162B CN110811162B CN201911046048.5A CN201911046048A CN110811162B CN 110811162 B CN110811162 B CN 110811162B CN 201911046048 A CN201911046048 A CN 201911046048A CN 110811162 B CN110811162 B CN 110811162B
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- driving
- rotating shaft
- assembly
- shaft
- drive
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- 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
- A47B53/00—Cabinets or racks having several sections one behind the other
- A47B53/02—Cabinet systems, e.g. consisting of cabinets arranged in a row with means to open or close passages between adjacent cabinets
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- 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
- A47B63/00—Cabinets, racks or shelf units, specially adapted for storing books, documents, forms, or the like
Abstract
The application relates to a movable rack with adjustable moving speed, wherein the movable rack with adjustable moving speed comprises a movable rack main body, a sliding mechanism, a driving rotating component, a controller and an adjusting device, wherein the driving mechanism comprises a driving unit and a variable speed transmission unit, wherein the movable rack main body is slidably arranged on the sliding mechanism, wherein the sliding mechanism is connected with the variable speed transmission unit in a driving way, the variable speed transmission unit is connected with the driving unit in a driving way, and the adjusting mechanism is connected with the controller in a driving way to adjust the transmission ratio of the variable speed transmission mechanism.
Description
Technical Field
The application relates to a compact shelf, in particular to a compact shelf with adjustable moving speed.
Background
The compact shelf (also called as compact cabinet) is mainly used for storing archive data, securities, certificates and the like, and has the advantages of secret closure, high space utilization rate, convenient access and the like. Along with the development of compact shelving, the usage of the compact shelving is not limited to the storage of archival data, and more novel storage equipment suitable for storing book data, archival data, archive financial certificates and goods in courts, institutions, data rooms, sample rooms and the like is provided.
Today's compact shelving typically comprises a plurality of compact shelving units and at least one guide rail, wherein a plurality of said compact shelving units are slidably arranged to said guide rail. By the arrangement, the compact shelving can occupy smaller space while storing objects, and a room with the same space volume can store more compact shelving units.
When an operator needs to take the articles stored in one of the compact shelf units, the adjacent compact shelf units need to be moved away. After the taking of the deposit is completed, the compact shelving unit is closed.
In reality, when the compact shelving unit starts to slide and closes with another compact shelving unit adjacent to the compact shelving unit, the item placed on the corresponding compact shelving unit is most prone to toppling over because the acceleration of the item stored on the compact shelving unit is then the greatest. The contents, if poured, are easily damaged, especially with fragile contents.
Disclosure of Invention
One object of the present application is to provide a compact shelving with adjustable moving speed, wherein the compact shelving with adjustable moving speed can be slowly accelerated, so that when the compact shelving units in the compact shelving start to slide and close with another compact shelving unit adjacent to the compact shelving unit, the stored objects on the compact shelving unit are not easy to topple.
Another object of the present application is to provide a compact shelving with adjustable moving speed, wherein the compact shelving with adjustable moving speed can adjust the moving speed of the compact shelving units driven to move according to the change of the space between one compact shelving unit driven to move and the other adjacent compact shelving unit.
Another object of the present application is to provide a compact shelf with adjustable moving speed, wherein the compact shelf can change the speed of the compact shelf in the moving process by means of mechanical adjustment.
It is another object of the present application to provide a compact shelving with adjustable movement speed, wherein the compact shelving with adjustable movement speed can be driven either manually or electrically.
In order to achieve at least one of the above objects, the present invention provides a compact shelving with adjustable moving speed, wherein the compact shelving with adjustable moving speed comprises:
a compact shelf main body;
a sliding mechanism, wherein the compact shelf main body is slidably arranged on the sliding mechanism; and
a drive mechanism, wherein the drive mechanism comprises:
a driving unit;
a variable speed drive unit, wherein the variable speed drive unit comprises a drive assembly, a drive assembly and a gear plate member, wherein the drive assembly comprises a telescopic rotation shaft and a plurality of rotation bearings, the rotation shaft has a first drive end and a second drive end, wherein the plurality of rotation bearings are arranged around the first drive end of the same circumference centered on the rotation shaft, wherein the drive assembly comprises a connecting shaft and a gear, wherein the gear comprises a wheel body and a gear body extending sideward from the wheel body, wherein the connecting shaft is arranged to penetrate through the center of the wheel body and is drivably connected to the drive unit, wherein at least one of the rotation bearings arranged at the first drive end is arranged between two adjacent ones of the gear bodies, and the plurality of rotation bearings are arranged wherein the plurality of rotation bearings are arranged on the same circumference centered on the rotation shaft A periphery of the second driving end of the circumference, wherein the toothed plate assembly comprises a plate body, a plurality of sets of driving teeth arranged on a plurality of concentric circles centered on a center of the plate body, and a toothed plate shaft disposed through the center of the plate body, wherein the sliding mechanism is drivingly connected to the toothed plate shaft, wherein at least one of the rotational bearings disposed at the second driving end is disposed between adjacent ones of the driving teeth, wherein when the connecting shaft is driven by the driving unit, the plurality of rotational bearings disposed at the first driving end are periodically rotationally pushed to rotate the rotating shaft, and the driving teeth are correspondingly rotationally pushed by the plurality of rotational bearings that rotate with the rotating shaft and are disposed at the second driving end;
a driving rotation assembly;
a controller, wherein the drive rotating assembly is controllably connected to the controller; and
an adjusting device, wherein the adjusting device comprises a pair of adjusting arms, a sliding rail, a driving assembly and a rotating shaft, wherein each of the adjusting arms forms a clamping opening, wherein the sliding rail is disposed parallel to the rotating shaft, wherein the rotating shaft is disposed through the clamping openings of the two adjusting arms, wherein the rotating shaft is disposed through the sliding rail, and the sliding rail can be driven to rotate by driving the rotating shaft to rotate by the driving rotating assembly, wherein the driving assembly is controllably connected to the controller, wherein when the sliding rail is driven to rotate, the rotating shaft is pushed laterally, and the driving assembly is controlled to drive one of the adjusting arms to clamp the rotating shaft to slide along the sliding rail, so that the length of the rotating shaft is adjusted by a predetermined length, and then the rotating shaft is rotated, so that at least one of the rotary bearings provided at the second driving end of the rotary shaft is moved into another set of the driving teeth.
According to an embodiment of the present invention, the plurality of rotary bearings provided at the first driving end are provided to the rotary shaft to be laterally retractable by a torsion spring.
According to an embodiment of the present invention, the plurality of rotary bearings provided at the second driving end are provided to the rotary shaft to be laterally retractable by a torsion spring.
According to one embodiment of the invention, the movable rack with adjustable moving speed comprises at least one handle assembly, and a handle assembly is arranged on the side surface of the movable rack unit of each movable rack main body.
According to an embodiment of the invention, the handle assembly is detachably connected to the connecting shaft of the transmission assembly.
Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.
Drawings
These and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings of which:
fig. 1 shows an overall schematic view of a compact shelf with adjustable movement speed according to the invention.
Fig. 2 is a schematic view showing another state of the movable rack with adjustable moving speed according to the present invention after sliding.
Fig. 3 is an exploded view showing a part of the structure of the movable rack with adjustable moving speed according to the present invention.
Fig. 4 shows a block diagram of a part of the structure of the movable rack with adjustable moving speed of the invention.
Fig. 5 shows a schematic diagram of the movable speed adjustable dense frame of the present invention in a state after the transmission ratio is adjusted.
Fig. 6 shows a schematic diagram of the movable speed adjustable dense frame of the invention in another state after the transmission ratio is adjusted.
Detailed Description
The terms and words used in the following specification and claims are not limited to the literal meanings, but are used only by the inventors to enable a clear and consistent understanding of the invention. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
While ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the teachings of the inventive concepts. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 6, a movable speed adjustable compact shelf according to a preferred embodiment of the present invention will be described in detail below, wherein the movable speed adjustable compact shelf 100 includes a compact shelf main body 10 and at least one sliding mechanism 20 and a driving mechanism 30. The compact shelving main body 10 is slidably mounted to the sliding mechanism 20 through the driving mechanism 30. The drive mechanism 30 includes a drive unit 31 and a variable transmission unit 32, wherein the variable transmission unit 32 is connected to the drive unit 31 in a variable speed transmission manner. The slide mechanism 20 is drivingly connected to the variable transmission unit 32 such that the variable transmission unit 32 can drive the slide mechanism 20 at different drive ratios when driving the slide mechanism 20.
It is worth mentioning that the driving unit 31 may be implemented as a motor, wherein the kind of the motor is not the focus of the present invention, and the present invention is not limited in this respect. Further, the sliding mechanism 20 may be implemented as a pulley mechanism including at least one pulley, wherein the pulley mechanism cooperating guide rails are capable of moving the compact shelving main body 10 driven by the variable transmission unit 32 at different speeds when the sliding mechanism 20 is transmitted by the variable transmission unit 32 via different transmission ratios.
The compact shelving main body 10 comprises at least one compact shelving unit 11, wherein each compact shelving unit 11 is provided with one sliding mechanism 20 and one driving mechanism 30, so that each compact shelving unit 11 can be driven individually. Each of the compact shelving units 11 is arranged side by side on the guide rail. Each of the compact shelving units 11 has a front 111 and a rear 112, respectively. When the plurality of compact shelf units 11 are not opened, the front parts 111 of the other compact shelf units 11 except the compact shelf units 11 positioned at two sides are closely attached to the rear part 112 of the other adjacent compact shelf unit 11, so that the space occupied by the compact shelf main body 10 can be reduced, and dust can be prevented from entering the stored objects stored in the compact shelf units 11 from the space between one compact shelf unit 11 and the other adjacent compact shelf unit 11.
It can be understood that since the compact shelf main body 10 can move at different speeds, when the compact shelf main body 10 just starts to slide or stops sliding, the sliding mechanism 20 driven via the variable transmission unit 32 can slowly drive or brake the compact shelf main body 10 by adjusting the variable transmission unit 32. Since the acceleration of the compact shelving main body 10 is small when the compact shelving main body is started or braked, the stored objects placed on the compact shelving units 11 are not easy to fall off from the compact shelving main body 10, and on the other hand, the noise generated by the collision between two adjacent compact shelving units 11 is also reduced.
Specifically, the variable transmission unit 32 includes a driving member 321, a gear member 322 and a transmission member 323. The driving assembly 321 includes a rotating shaft 3211 and a plurality of rotating bearings 3212. The rotating shaft 3211 has a first leading end 321101 and a second leading end 321102. A plurality of the rotary bearings 3212 are arranged around the first driving end 321101 on the same circumference centered on the rotary shaft 3211. A plurality of the rotary bearings 3212 are arranged in a circumferential direction of the second leading end 321102 in which a plurality of the rotary bearings 3212 are arranged on the same circumference centering on the rotary shaft 3211. Preferably, each of the rotary bearings 3212 is laterally telescopically disposed to the rotary shaft 3211 by a torsion spring.
In addition, the rotating shaft 3211 is implemented as a telescopic shaft. The rack member 322 includes a plate body 3221, a plurality of sets of driving teeth 3222, and a rack shaft 3223, wherein the plurality of sets of driving teeth 3222 are arranged on concentric circles centered on the center of the plate body 3221. The paddle shaft 3223 is disposed through the plate body 3221 and is rotatably mounted to the bottom of the compact shelving unit 11. It is worth mentioning that the sliding mechanism 20 is drivingly connected to the toothed plate shaft 3223.
The transmission assembly 323 includes a connection shaft 3231 and a gear 3232, wherein the connection shaft 3231 passes through the center of the gear 3232 and is drivably connected to the driving unit 31. The gear 3232 includes a wheel 32321 and a set of teeth 32322, wherein the teeth 32322 is disposed on the wheel 32321 and faces a side surface of the wheel 32321.
A plurality of the rotary bearings 321102 provided at the first driving end 321101 of the rotary shaft 3211 are rotatably provided between a plurality of the tooth bodies 32322 of the gear 3232; the plurality of rotating bearings 321102 provided at the second driving end 321102 of the rotating shaft 3211 are disposed between a plurality of driving teeth 3222 of a set of driving teeth 3222 of the rack member 322. When the connecting shaft 3231 of the transmission assembly 323 is driven to rotate by the driving unit 31, the gear 3232 rotates along with the connecting shaft 3223, and accordingly, the rotating bearing 3212 disposed at the first driving end 321101 of the rotating shaft 3211 will be rotationally pushed by the gear body 32322 of the gear 3232. Subsequently, the rotating shaft 3211 is also rotated accordingly to rotate the rotating bearing 3212 disposed at the second leading end 321102. Then, the driving teeth 3222 on the plate main body 3221 of the rack member 322 will be rotationally pushed and rotated by the driving bearing 3212 disposed at the second driving end 321101. Accordingly, the slide mechanism 20 will roll along a guide rail previously provided on the ground. As shown in fig. 5 and 6.
It should be noted that, since the rotating shaft 3211 is implemented as a telescopic shaft, the length of the telescopic shaft can be adjusted to further adjust the driving teeth 3222 located on the plate main body 3221 and engaged with the rotating bearing 3212 disposed at the second driving end 321102. Accordingly, the transmission ratio between the rotating bearing 3212 disposed at the second driving end 321102 and the transmission teeth 3222 on the plate main body 3221 is further changed, so that the sliding speed of the compact shelving unit 11 can be adjusted.
Further, the movable speed adjustable compact shelving 100 comprises an adjusting mechanism 40, a driving rotating assembly 50 and a controller 60. The adjusting mechanism 40 includes a pair of adjusting arms 41, a slide rail 42, a pair of driving components 43, and a rotating shaft 44. The pair of adjustment arms 41 are provided on the slide rail 42 at a predetermined distance. The slide rail 42 is disposed parallel to the rotation shaft 3211 of the driving assembly 321 in the driving mechanism 30. The rotation shaft 44 is disposed perpendicular to the slide rail 42 and is rotatably connected to the driving rotating assembly 50. Each of the adjusting arms 41 is slidably disposed along the slide rail 42. In addition, the adjustment arm 41 forms a grip 4101, wherein the rotation shaft 3211 is disposed through the grip 4101. Each of the adjusting arms 41 is controllably connected to the controller 60 to enable the adjusting arms 41 to be switched between an open state and a clamped state. The driving assembly 43 and the driving rotating assembly 50 are respectively and controllably connected to the controller 60, so that the rotation of the rotating shaft 44 and the sliding of the adjusting arm 41 relative to the sliding rail 42 can be controlled by the controller 60.
Specifically, when the compact shelving main body 10 starts to slide, the rotating bearing 3212 of the second driving end 321102 disposed on the rotating shaft 3211 is engaged with a set of driving teeth 3222 located on the plate main body 3221 and farthest from the center of the plate main body 3221. At this time, the distance between the first leading end 321101 and the second leading end 321102 of the rotating shaft 321 is maximized. Accordingly, the compact shelving main body 10 is started at the slowest speed to prevent the stored objects located on the compact shelving main body 10 from falling. Subsequently, when the compact shelving main body 10 moves at a constant speed, the driving rotary assembly 50 is driven to rotate the adjusting arm 41 around the rotating shaft 44, so as to push the rotating shaft 3211 to rotate from the side, thereby moving the rotating bearings 3212 arranged at the first driving end 321101 and the second driving end 321102 out of the driving teeth 3222 and the tooth bodies 32322 on the gear 3232, respectively.
Subsequently, the driving assembly 43 is driven to slide the two adjusting arms 41 along the sliding rails 42, so that the rotating shaft 3211 is shortened by a predetermined length. Subsequently, the driving rotation assembly 50 is controlled to rotate the adjusting arm 41, so that the rotation bearings 3212 disposed at the first driving end 321101 and the second driving end 321102 are returned to the position of engaging with the other set of driving teeth 3222 and the tooth body 32322 of the gear 3232.
Preferably, since the rotary bearings 3212 can be extended and retracted along the side, the rotary bearings 3212 disposed at the first and second driving ends 321101 and 321102 can be more easily returned to the position where another set of the driving teeth 3222 and the tooth bodies 32322 of the gear 3232 are engaged again.
By rotating the rotating shaft 321, shortening the rotating shaft 321 and rotating the rotating shaft 321 for multiple times, the first driving end 321101 provided on the rotating shaft 3211 is the rotating bearing 3212 can be engaged with the driving teeth 3222 at different positions away from the center of the plate main body 3221, so as to adjust the transmission ratio output by the driving mechanism 30, and thus adjust the sliding speed of the compact shelving main body 10 along the sliding mechanism 20.
Conversely, when the compact shelving main body 10 needs to be braked, the rotating shaft 321 can be rotated, the rotating shaft 321 can be stretched, and the rotating shaft 321 can be rotated for a plurality of times, so that the first driving end 321101 arranged on the rotating shaft 3211 is the rotating bearing 3212 which can be matched with the driving teeth 3222 at different positions away from the center of the plate main body 3221, so as to adjust the transmission ratio output by the driving mechanism 30, and further adjust the sliding speed of the compact shelving main body 10 along the sliding mechanism 20.
Further, the movable-rate-adjustable compact shelving 100 further comprises at least one handle assembly 70. A handle assembly 70 is installed at a side of the compact shelving unit 11 of each compact shelving body 10. The handle assembly 70 is detachably connected to the connecting shaft 3231 of the transmission assembly 323, for example, by screwing to the connecting shaft 3231, so that the movable density shelf 100 with adjustable moving speed can also be manually driven.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (5)
1. A movable speed adjustable compact shelf, wherein the movable speed adjustable compact shelf comprises:
a compact shelf main body;
a sliding mechanism, wherein the compact shelf main body is slidably arranged on the sliding mechanism; and
a drive mechanism, wherein the drive mechanism comprises:
a driving unit;
a variable speed drive unit, wherein the variable speed drive unit comprises a drive assembly, a drive assembly and a gear plate member, wherein the drive assembly comprises a telescopic rotation shaft and a plurality of rotation bearings, the rotation shaft has a first drive end and a second drive end, wherein the plurality of rotation bearings are arranged around the first drive end of the same circumference centered on the rotation shaft, wherein the drive assembly comprises a connecting shaft and a gear, wherein the gear comprises a wheel body and a gear body extending sideward from the wheel body, wherein the connecting shaft is arranged to penetrate through the center of the wheel body and is drivably connected to the drive unit, wherein at least one of the rotation bearings arranged at the first drive end is arranged between two adjacent ones of the gear bodies, and the plurality of rotation bearings are arranged wherein the plurality of rotation bearings are arranged on the same circumference centered on the rotation shaft A periphery of the second driving end of the circumference, wherein the toothed plate assembly comprises a plate body, a plurality of sets of driving teeth arranged on a plurality of concentric circles centered on a center of the plate body, and a toothed plate shaft disposed through the center of the plate body, wherein the sliding mechanism is drivingly connected to the toothed plate shaft, wherein at least one of the rotational bearings disposed at the second driving end is disposed between adjacent ones of the driving teeth, wherein when the connecting shaft is driven by the driving unit, the plurality of rotational bearings disposed at the first driving end are periodically rotationally pushed to rotate the rotating shaft, and the driving teeth are correspondingly rotationally pushed by the plurality of rotational bearings that rotate with the rotating shaft and are disposed at the second driving end;
a driving rotation assembly;
a controller, wherein the drive rotating assembly is controllably connected to the controller; and
an adjusting device, wherein the adjusting device comprises a pair of adjusting arms, a sliding rail, a driving assembly and a rotating shaft, wherein each of the adjusting arms forms a clamping opening, wherein the sliding rail is disposed parallel to the rotating shaft, wherein the rotating shaft is disposed through the clamping openings of the two adjusting arms, wherein the rotating shaft is disposed through the sliding rail, and the sliding rail can be driven to rotate by driving the rotating shaft to rotate by the driving rotating assembly, wherein the driving assembly is controllably connected to the controller, wherein when the sliding rail is driven to rotate, the rotating shaft is pushed laterally, and the driving assembly is controlled to drive one of the adjusting arms to clamp the rotating shaft to slide along the sliding rail, so that the length of the rotating shaft is adjusted by a predetermined length, and then the rotating shaft is rotated, so that at least one of the rotary bearings provided at the second driving end of the rotary shaft is moved into another set of the driving teeth.
2. The compact shelving with adjustable movement speed as claimed in claim 1, wherein a plurality of said rotating bearings arranged at said first driving end are telescopically arranged at said rotating shaft along the side by a torsion spring.
3. The compact shelving with adjustable movement speed as claimed in claim 2, wherein a plurality of said rotating bearings disposed at said second driving end are telescopically disposed at said rotating shaft along the side by a torsion spring.
4. The compact shelving with adjustable movement speed according to any one of claims 1 to 3, wherein the compact shelving with adjustable movement speed comprises at least one handle assembly, and a handle assembly is mounted on the side surface of the compact shelving unit of each compact shelving main body.
5. The compact shelving with adjustable movement speed of claim 4, wherein the handle assembly is detachably connected to the connecting shaft of the transmission assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046048.5A CN110811162B (en) | 2019-10-30 | 2019-10-30 | Movable speed adjustable compact shelf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046048.5A CN110811162B (en) | 2019-10-30 | 2019-10-30 | Movable speed adjustable compact shelf |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110811162A CN110811162A (en) | 2020-02-21 |
| CN110811162B true CN110811162B (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911046048.5A Active CN110811162B (en) | 2019-10-30 | 2019-10-30 | Movable speed adjustable compact shelf |
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| Country | Link |
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| CN (1) | CN110811162B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397313B (en) * | 2021-06-09 | 2022-09-16 | 江西万佳保险设备有限公司 | Compact shelf with adjustable moving speed |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11187943A (en) * | 1997-12-26 | 1999-07-13 | Alps Electric Co Ltd | Carrier device |
| CN204025561U (en) * | 2014-07-10 | 2014-12-17 | 宁波朝平现代家具有限公司 | With the compact shelving of gear |
| CN107752461A (en) * | 2017-11-21 | 2018-03-06 | 江西源金科技集团有限公司 | A kind of file compact shelving cabinet transmission device |
| CN109895934A (en) * | 2017-12-08 | 2019-06-18 | 西安佳纳环保科技有限公司 | A kind of two speed variator of bicycle use |
| CN108669859B (en) * | 2018-07-03 | 2023-12-19 | 江西卓尔金属设备集团有限公司 | Mobile device for compact shelf |
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2019
- 2019-10-30 CN CN201911046048.5A patent/CN110811162B/en active Active
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| CN110811162A (en) | 2020-02-21 |
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