CN205397978U - Three section formula linear drive ware and drive assembly thereof - Google Patents
Three section formula linear drive ware and drive assembly thereof Download PDFInfo
- Publication number
- CN205397978U CN205397978U CN201620143999.XU CN201620143999U CN205397978U CN 205397978 U CN205397978 U CN 205397978U CN 201620143999 U CN201620143999 U CN 201620143999U CN 205397978 U CN205397978 U CN 205397978U
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- tubing string
- interior
- lead screw
- section type
- screw
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Abstract
The utility model relates to a three section formula linear drive ware and drive assembly thereof, three section formula linear drive ware includes drive assembly and three section formula lift tubular column, the outside of lead screw including drive assembly's hollow lead screw and the driving tube suit, the outer tube suit is outside at the driving tube, hollow screw -nut cover is on hollow lead screw, including the interior screw -nut cover on the lead screw, the both ends at the outer tube are fixed to hollow screw -nut and fixing base, hollow lead screw rotates with the driving tube is synchronous, the rotatable setting of interior screw -nut is in the fixing base, the lower extreme fixed connection of interior screw -nut and driving tube. The bottom of drive assembly's fixing base is fixed on the first end plate of the lower extreme of middle tubular column, but the fixing base part or whole get into in the tubular column. The beneficial effects are that: drive assembly becomes an independent load module, compact structure, strong adaptability, the axial space between the three section lift tubular column has been saved as far as possible to the actuator simultaneously, can provide bigger high control range.
Description
Technical field
This utility model relates to linear actuators technical field, particularly a kind of three-section type Linear actuator and driving assembly thereof.
Background technology
In modern working environment, for the consideration to healthy and comfortableness, require that desk, computer desk, conference table etc. have elevating function, clerical workforce's height according to the height of oneself, sitting posture adjustment desktop, improve comfortableness, or directly stand work, this is conducive to alleviating neck, the fatigue of waist and strain.In the general layout of globalization trade, this lift desk not only to possess manipulation and the runnability of excellence, also will according to the difference setting height range of accommodation of different regions personnel's height.Height adjustment range 22.6 by ANSI/BIFMA standard-required desktop to ground "-48.7 " (574mm～1237mm).To fulfill this requirement, general linear driver must flow through three joints or three to save above tubing strings nested against one another and can stretch up and down and realize, it is contemplated that structure complexity and economy, generally adopts three-section type lifting tubing string.Basic demand according to ISO21016 office furniture simultaneously, when height of table top reaches maximum, desk must have enough rigidity, and good rigidity could meet customer requirement better.This is accomplished by reducing as much as possible gap between three sections of tubing strings of Linear actuator, but this technology has certain assembly difficulty, and due to tension between tubing string, the driving force loss that can cause, it is impossible to as the only resource；Another method improving rigidity is to increase the overlapping dimension between three sections of tubing strings, so when linear activation configuration designs, need to ensure that tube length maximizes as far as possible.
In existing document, such as the application for a patent for invention CN1784937A actuator of Rinac Co., Ltd, the utility model patent CN201087122Y of Changzhou Kai Di Electrical Appliances Co., Ltd, all refer to such three-section type Linear actuator.But the attachment structure between assembly and three-section type lifting tubing string that drives of existing three-section type Linear actuator needs to take more size on lifting direction, affect the limited height range of accommodation of actuator, under the premise guaranteeing rigidity, for meeting the height adjustment range demand of different regions, needing to design the specification that low money is two kinds different with high money, this makes processing and manufacturing all complicate to the management of the whole industrial chain of sales service.
And, existing three-section type Linear actuator drives modular construction design to have certain limitation, in order to adapt to the non-standard elevating mechanism of difformity three-section type lifting tubing string or customization, it is necessary to the driving assembly of supporting corresponding construction, poor universality.
Utility model content
The technical problems to be solved in the utility model is: provides a kind of three-section type Linear actuator and drives assembly, improving the adaptability of product, simplifying product specification.
nullThis utility model solves its technical problem and be the technical scheme is that the driving assembly of a kind of three-section type Linear actuator，Including hollow lead screw、Hollow lead screw nut、Outer tube、Fixing seat、Drive pipe、Interior feed screw nut and Nei screw mandrel，Hollow lead screw and driving sleeve are contained in the outside of interior screw mandrel，Outer tube sleeve is contained in outside driving pipe，Hollow lead screw nut sleeve coordinates in hollow lead screw and with hollow lead screw screw drives，Interior feed screw nut is enclosed within interior screw mandrel and coordinates with interior screw mandrel screw drives，Hollow lead screw nut is fixing with the upper end of outer tube to be connected，Fixing seat is fixing with the lower end of outer tube to be connected，The bottom of fixing seat has the fixed structure fixing with the middle tubing string of the three-section type of three-section type Linear actuator lifting tubing string，The lower end of hollow lead screw coordinates, with the tube wall driving pipe, the synchronous axial system realizing driving pipe with hollow lead screw by keyway，Interior feed screw nut is spindle rotationally arranged in fixing seat，Interior feed screw nut is fixing with the lower end driving pipe to be connected.
Limiting further, driving sleeve is contained in outside hollow lead screw, drives the upper end of pipe and hollow lead screw nut rotatably to assemble.
Limiting further, fixing seat plug-in mounting enters the lower end of outer tube.
Limiting further, fix seat and outer tube riveting, riveting point is positioned at outer tube and the side of fixing seat.
Limit further, riveting between hollow lead screw nut and outer tube, drive pipe and interior feed screw nut's riveting.
nullA kind of three-section type Linear actuator，Including driving casing、Above-mentioned driving assembly and three-section type lifting tubing string，Three-section type lifting tubing string includes interior tubing string、Middle tubing string and outer tubing string，Intervalve column sleeve is contained in the outside of interior tubing string，Outer tube column sleeve is contained in middle o exterior，Between interior tubing string and middle tubing string，Scalable cooperation between middle tubing string and outer tubing string，The upper end of interior tubing string is fixed in driving casing，The lower end of middle tubing string arranges the first end plate，The lower end of outer tubing string arranges the second end plate，Assembly is driven to be arranged in three-section type lifting tubing string，The upper end driving the hollow lead screw of assembly is rotatably assembled with casing，The bottom of fixing seat is fixed in the upper plane of the first end plate，Interior screw mandrel and is fixed on the second end plate through the first end plate by the through hole on the first end plate，It is contracted to the most in short-term under the driving driving assembly when three-section type lifts tubing string，Fix seating portion or fully enter interior tubing string.
Limiting further, the bottom of fixing seat is connected by screw with the first end plate.
Limiting further, the bottom of fixing seat has the boss protruding outer tube external diameter, and boss has screw hole, and the screw through the first end plate is screwed into the screw hole on boss, fixing seat and the first end plate is fixed.
Limiting further, the lower end of interior screw mandrel has spline, the second end plate has splined hole, the splined hole of the second end plate is inserted in the lower end of interior screw mandrel, and the screw being screwed into interior screw mandrel connects fixing to screw mandrel and the second end plate.
The beneficial effects of the utility model are: hollow lead screw, hollow lead screw nut, driving pipe, interior screw mandrel, interior feed screw nut are incorporated in outer tube by the driving assembly of three-section type Linear actuator, become an independent load module, compact conformation, and it is connected by the bottom of fixing seat is fixing with the middle tubing string of three-section type lifting tubing string, it is adapted to difform three-section type lifting tubing string, strong adaptability；Simultaneously as this driving assembly is fixed with the first end plate of intermediate pipe piece by the fixing bottom of seat, do not needing the lower end sidewall spaces taking intermediate pipe piece for installing, save the axial space between three joint lifting tubing strings as much as possible, the length making interior tubing string can lengthen, it is provided that bigger height adjustment range.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, this utility model is further illustrated.
Fig. 1 is the mounting structure schematic diagram driving assembly and middle tubing string of the present invention；
Fig. 2 is the structural representation driving assembly of the present invention；
Fig. 3 is the explosive view driving assembly of the present invention；
Fig. 4 is the profile driving assembly of the present invention；
Fig. 5 is the profile of the actuator of the present invention；
Fig. 6 is the assembling schematic diagram of the actuator of the present invention；
Fig. 7 is the profile of the actuator of prior art；
In figure: 1. hollow lead screw, 2. hollow lead screw nut, 3. outer tube, 4. drive pipe, 5. fixing seat, 5-1. boss, screw mandrel in 6., feed screw nut in 7., 8. tubing string in, 8-1. drives casing, 9. middle tubing string, 9-1. the first end plate, 10. outer tubing string, 10-1. the second end plate, 11. wipers, 12. bearing blocks, 13. bearing baffle, 14. drive sleeve, 15. shock absorbing rings, 16. riveting point A, 17. riveting point B, 18. riveting point C.
Detailed description of the invention
In the prior art, on the one hand for providing bigger height adjustment range, need the overlap length reducing between three-section type tubing string as much as possible, on the other hand for ensureing the rigidity of three-section type Linear actuator, need the overlap length increasing between three-section type tubing string as much as possible, and reduce the gap between three-section type tubing string, it is the index of conflict for existing three-section type Linear actuator height adjustment range and rigidity.
The present invention proposes a kind of new structure, can realize the altitude mixture control of wide scope, can ensure that again higher rigid requirements, can provide more applicable product for market.
Such as Fig. 2, shown in 3 and 4, a kind of driving assembly of three-section type Linear actuator, including hollow lead screw 1, hollow lead screw nut 2, outer tube 3, fixing seat 5, drive pipe 4, interior feed screw nut 7 and interior screw mandrel 6, hollow lead screw 1 and driving pipe 4 are sleeved on the outside of interior screw mandrel 6, pipe 4 is driven to be sleeved on hollow lead screw 1 outside, it is outside that outer tube 3 is sleeved on driving pipe 4, hollow lead screw nut 2 is enclosed within hollow lead screw 1 and coordinates with hollow lead screw 1 screw drives, and interior feed screw nut 7 is enclosed within interior screw mandrel 6 and coordinates with interior screw mandrel 6 screw drives.
Hollow lead screw nut 2 and fixing seat 5 plug-in mounting respectively enter the top and bottom of outer tube 3 and are connected by the mode of riveted joint is fixing with outer tube 3, and the riveting point B17 between riveting point A16 and fixing seat 5 and outer tube 3 between hollow lead screw nut 2 and outer tube 3 is positioned at the side of outer tube 3.
The bottom of fixing seat 5 has the fixed structure fixing with the middle tubing string 9 of the three-section type of three-section type Linear actuator lifting tubing string.
The tube wall that the lower end of hollow lead screw 1 has with driving pipe 4 coordinates the synchronous axial system realizing driving pipe 4 with hollow lead screw 1 by keyway, realize the lower end of hollow lead screw 1 be there is the one form of which coordinated by keyway with the tube wall driving pipe 4 to be: arrange drive sleeve 14 in the lower end of hollow lead screw 1, drive sleeve 14 has keyway, driving and have, on the inwall of pipe 4, the spline coordinated with keyway, hollow lead screw 1 is driven by keyway and key when rotated and drives pipe synchronous rotary.
The inwall of fixing seat 5 is provided with stepped hole, interior feed screw nut 7 is provided with the cylindrical step coordinated with stepped hole, interior feed screw nut 7 is spindle rotationally arranged in fixing seat 5, the outer wall of interior feed screw nut 7 have a plurality of open slot and closed slot, interior feed screw nut 7 plug-in mounting enters to drive the lower end of pipe 4, driving the key on pipe 4 inwall to embed open slot, drive the lower end of pipe 4 and interior feed screw nut 7 to be fixedly connected by the mode riveted, riveting point C18 is positioned at the position of closed slot.
The inner circle top of hollow lead screw nut 2 and hollow lead screw threaded engagement, the inner circle bottom of hollow lead screw nut 2 is rotatably assembled with the upper end driving pipe 4.
Hollow lead screw, hollow lead screw nut, driving pipe, interior screw mandrel, interior feed screw nut are incorporated in outer tube by this driving Component driver assembly, become an independent load module, compact conformation, and it is connected by the bottom of fixing seat is fixing with the middle tubing string of three-section type lifting tubing string, it is adapted to difform three-section type lifting tubing string, strong adaptability.
As shown in Fig. 1,2,3,4,5 and 6, a kind of three-section type Linear actuator, including driving casing 8-1, the driving assembly of said structure and three-section type lifting tubing string, three-section type lifting tubing string includes interior tubing string 8, middle tubing string 9 and outer tubing string 10, middle tubing string 9 is sleeved on the outside of interior tubing string 8, it is outside that outer tubing string 10 is sleeved on middle tubing string 9, between interior tubing string 8 and middle tubing string 9, scalable cooperation between middle tubing string 9 and outer tubing string 10, loads wiper 11 between the tube wall of interior tubing string 8, middle tubing string 9 and outer tubing string 10.The upper end of interior tubing string 8 is fixed on driving casing 8-1, the lower end of middle tubing string 9 arranges the first end plate 9-1, the lower end of outer tubing string 10 arranges the second end plate 10-1, assembly is driven to be arranged in three-section type lifting tubing string, the upper end driving the hollow lead screw 1 of assembly is rotatably assembled with casing, realizing the one form of which that the upper end of hollow lead screw 1 and casing rotatably assemble is: at fixing casing upper bearing (metal) and bearing mounting structure, bearing mounting structure is bearing block 12, bearing baffle 13 such as, and the upper end of hollow lead screw 1 enters through bearing and drives in casing.
The bottom of fixing seat 5 is fixed in the upper plane of the first end plate 9-1, interior screw mandrel 6 through the first end plate 9-1 and is fixed on the second end plate 10-1 by the through hole on the first end plate 9-1, being contracted to the most in short-term under the driving driving assembly when three-section type lifts tubing string, fixing seat 5 partly or entirely enters interior tubing string 8.
The one way in which that the bottom of fixing seat 5 is fixed in the upper plane of the first end plate 9-1 is: the bottom of fixing seat 5 has the boss 5-1 protruding outer tube 3 external diameter, boss 5-1 has screw hole, screw through the first end plate 9-1 is screwed into the screw hole on boss 5-1, fixing seat 5 and the first end plate 9-1 is fixed.
The one way in which that interior screw mandrel 6 is fixed on the second end plate 10-1 is: have spline on the lower end of interior screw mandrel 6, second end plate 10-1 has splined hole, the splined hole of the second end plate 10-1 is inserted in the lower end of interior screw mandrel 6, and the screw being screwed into interior screw mandrel 6 connects fixing to screw mandrel and the second end plate 10-1.
Motor is installed in driving casing 8-1, and is connected by spline 1-1 driving with hollow lead screw 1.
The lower end of interior screw mandrel 6 is also cased with shock absorbing ring 15, and shock absorbing ring 15 is spacing by jump ring.
The operation principle of this three-section type Linear actuator is:
It is arranged on and drives the motor 16 in casing 8-1 to drive hollow lead screw 1 to rotate by spline 1-1, hollow lead screw nut 2 does not rotate under outer tube 3, the restriction with intermediate pipe piece of the fixing seat, thus hollow lead screw nut 2 drives intermediate pipe piece 9 stretch out or retract with the rotation of hollow lead screw 1.The drive sleeve 14 at hollow lead screw 1 top drives and drives pipe 4 to rotate together simultaneously, interior feed screw nut 7 together stretches out with intermediate pipe piece 9 or retracts and rotate with driving pipe 4, can not rotate owing to interior screw mandrel 6 is fixed in outer tube 10, thus interior screw mandrel 6 drives outer tube stretch out or retract along with nut 7 rotation direction.Further, hollow lead screw 1 and interior screw mandrel 6 adopt identical rotation direction and helical pitch.Therefore, in embodiment in the accompanying drawings, drive intermediate pipe piece 9 that assembly drives, outer tubing string 10 can stretch out simultaneously or retract and the translational speed of the relative intermediate pipe piece 9 of outer tubing string 10 can remain identical with distance with the translational speed of the mutually internal tubing string of intermediate pipe piece 98 and distance, thus realizing intermediate pipe piece 9 and outer tubing string 10 is synchronized with the movement.
Because this driving assembly is fixed with the first end plate of intermediate pipe piece by the fixing bottom of seat, do not needing the lower end sidewall spaces taking intermediate pipe piece for installing, save the axial space between three joint lifting tubing strings as much as possible, the length making interior tubing string can lengthen, it is provided that bigger height adjustment range.
As it is shown in fig. 7, in prior art, driving the axial space height that three joints that the attachment structure between assembly and intermediate pipe piece 9 takies lift between tubing strings is H.
And in an embodiment of the present invention, owing to being provided with the first end plate 9-1 in intermediate pipe piece 9 lower end, by this connected mode, the axial space between three joint lifting tubing strings can be saved as much as possible, and make the length of interior tubing string 8 increase as much as possible, in three joint lifting tubing string elongations to time maximum, overlap length between each pipe joint post can meet under the hard conditions of desk, as shown in Figure 5, driving the axial space height that three joints that the attachment structure between assembly and intermediate pipe piece 9 takies lift between tubing strings is h, in the present invention, in, outer tubing string is compared the existing product of accompanying drawing 7 and can be made shorter, thus realizing the minimum altitude after retracting can meet the requirement of 574mm.
Claims (9)
1. the driving assembly of a three-section type Linear actuator, it is characterized in that: include hollow lead screw (1), hollow lead screw nut (2), outer tube (3), fixing seat (5), drive pipe (4), interior feed screw nut (7) and interior screw mandrel (6)
Hollow lead screw (1) and driving pipe (4) are sleeved on the outside of interior screw mandrel (6), and it is outside that outer tube (3) is sleeved on driving pipe (4),
Hollow lead screw nut (2) is enclosed within hollow lead screw (1) and above and coordinates with hollow lead screw (1) screw drives, interior feed screw nut (7) is enclosed within interior screw mandrel (6) and above and coordinates with interior screw mandrel (6) screw drives
Hollow lead screw nut (2) is fixing with the upper end of outer tube (3) to be connected, fixing seat (5) is fixing with the lower end of outer tube (3) to be connected, the bottom of fixing seat (5) has the fixed structure fixing with the middle tubing string (9) of the three-section type of three-section type Linear actuator lifting tubing string
The lower end of hollow lead screw (1) coordinates, with the tube wall driving pipe (4), the synchronous axial system realizing driving pipe (4) with hollow lead screw (1) by keyway,
Interior feed screw nut (7) is spindle rotationally arranged in fixing seat (5), and interior feed screw nut (7) is fixing with the lower end driving pipe (4) to be connected.
2. the driving assembly of three-section type Linear actuator according to claim 1, it is characterized in that: it is outside that described driving pipe (4) is sleeved on hollow lead screw (1), drive the upper end of pipe (4) and hollow lead screw nut (2) rotatably to assemble.
3. the driving assembly of three-section type Linear actuator according to claim 1, is characterized in that: described fixing seat (5) plug-in mounting enters the lower end of outer tube (3).
4. the driving assembly of three-section type Linear actuator according to claim 1, it is characterized in that: described fixing seat (5) and outer tube (3) riveting, riveting point is positioned at outer tube (3) and the side of fixing seat (5).
5. the driving assembly of three-section type Linear actuator according to claim 1, it is characterized in that: riveting between described hollow lead screw nut (2) and outer tube (3), drive pipe (4) and interior feed screw nut (7) riveting.
6. a three-section type Linear actuator, is characterized in that: include driving casing (8-1), the driving assembly of claim 1 or 2 or 3 or 4 or 5 and three-section type lifting tubing string,
Described three-section type lifting tubing string includes interior tubing string (8), middle tubing string (9) and outer tubing string (10), middle tubing string (9) is sleeved on the outside of interior tubing string (8), it is outside that outer tubing string (10) is sleeved on middle tubing string (9), between interior tubing string (8) and middle tubing string (9), scalable cooperation between middle tubing string (9) and outer tubing string (10)
The upper end of interior tubing string (8) is fixed in driving casing (8-1), the lower end of middle tubing string (9) arranges the first end plate (9-1), the lower end of outer tubing string (10) arranges the second end plate (10-1), assembly is driven to be arranged in three-section type lifting tubing string, the upper end driving the hollow lead screw (1) of assembly is rotatably assembled with casing, the bottom of fixing seat (5) is fixed in the upper plane of the first end plate (9-1), interior screw mandrel (6) through the first end plate (9-1) and is fixed on the second end plate (10-1) by the through hole on the first end plate (9-1),
It is contracted to the most in short-term under the driving driving assembly when three-section type lifts tubing string, tubing string (8) in the partly or entirely entrance of fixing seat (5).
7. three-section type Linear actuator according to claim 6, is characterized in that: the bottom of described fixing seat (5) and the first end plate (9-1) are connected by screw.
8. three-section type Linear actuator according to claim 7, it is characterized in that: the bottom of described fixing seat (5) has the boss (5-1) of protrusion outer tube (3) external diameter, boss (5-1) has screw hole, screw through the first end plate (9-1) is screwed into the screw hole on boss (5-1), is fixed with the first end plate (9-1) by fixing seat (5).
9. three-section type Linear actuator according to claim 6, it is characterized in that: the lower end of described interior screw mandrel (6) has spline, second end plate (10-1) has splined hole, the splined hole of the second end plate (10-1) is inserted in the lower end of interior screw mandrel (6), and the screw being screwed into interior screw mandrel (6) connects fixing to screw mandrel and the second end plate (10-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620143999.XU CN205397978U (en) | 2016-02-25 | 2016-02-25 | Three section formula linear drive ware and drive assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620143999.XU CN205397978U (en) | 2016-02-25 | 2016-02-25 | Three section formula linear drive ware and drive assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205397978U true CN205397978U (en) | 2016-07-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620143999.XU Withdrawn - After Issue CN205397978U (en) | 2016-02-25 | 2016-02-25 | Three section formula linear drive ware and drive assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205397978U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565200A (en) * | 2016-02-25 | 2016-05-11 | 常州市凯迪电器有限公司 | Three-segment type linear actuator and driving assembly thereof |
| CN107518591A (en) * | 2017-09-08 | 2017-12-29 | 浙江普思拓智能科技有限公司 | Intelligent elevated desk |
| WO2023217305A3 (en) * | 2022-05-11 | 2024-01-04 | 常州市凯迪电器股份有限公司 | Vertical lifting column |
-
2016
- 2016-02-25 CN CN201620143999.XU patent/CN205397978U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565200A (en) * | 2016-02-25 | 2016-05-11 | 常州市凯迪电器有限公司 | Three-segment type linear actuator and driving assembly thereof |
| WO2017143708A1 (en) * | 2016-02-25 | 2017-08-31 | 常州市凯迪电器股份有限公司 | Three-section linear actuator and drive assembly thereof |
| CN107518591A (en) * | 2017-09-08 | 2017-12-29 | 浙江普思拓智能科技有限公司 | Intelligent elevated desk |
| WO2023217305A3 (en) * | 2022-05-11 | 2024-01-04 | 常州市凯迪电器股份有限公司 | Vertical lifting column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Wujin Henglin Zhenjiang Village Road 213101 Jiangsu city of Changzhou province No. 4 Patentee after: CHANGZHOU KAIDI ELECTRICAL CO., LTD. Address before: Wujin Henglin Zhenjiang Village Road 213101 Jiangsu city of Changzhou province No. 4 Patentee before: Changzhou Kaidi Electric Appliance Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160727 Effective date of abandoning: 20171219 |
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| AV01 | Patent right actively abandoned |