CN206142730U - Lifting pushing rod - Google Patents
Lifting pushing rod Download PDFInfo
- Publication number
- CN206142730U CN206142730U CN201621026929.2U CN201621026929U CN206142730U CN 206142730 U CN206142730 U CN 206142730U CN 201621026929 U CN201621026929 U CN 201621026929U CN 206142730 U CN206142730 U CN 206142730U
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- Prior art keywords
- gear
- bearing
- push rod
- worm
- motor
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Abstract
The utility model discloses a lifting pushing rod belongs to linear drive equipment field, include motor, thimble assembly and locate drive assembly between motor and the thimble assembly, thimble assembly include the main shaft, drive assembly includes one -level drive unit and the second grade drive unit who is connected with the transmission of one -level drive unit, one -level drive unit is connected with the output shaft transmission of motor, second grade drive unit with spindle drive connects, one -level drive unit is the worm gear subassembly, second grade drive unit includes first gear and second gear, and the crossed axis angle of first gear and second gear is 90 degrees, so that the axial direction of main shaft is parallel with the axial direction of the output shaft of motor. The problem of lifting pushing rod occupation space is great among the prior art is solved.
Description
【Technical field】
This utility model is related to a kind of lifting push rod, belongs to linear drive field.
【Background technology】
Existing lifting push rod, including the transmission component that is connected of motor and the motor and with the transmission component
The thimble assembly being connected, thimble assembly itself flexible, when motor is rotated, drive thimble assembly to realize by transmission component
Telescopic, existing transmission component generally include worm and gear component, and, in transmission, both crossed axis angles are in for worm gear and worm screw
90 degree, therefore if be driven by one group of worm and gear component, the main shaft in the output direction of principal axis of motor and sleeve pipe
Direction is also that, in 90 degree, i.e., when motor is horizontal, the telescopic direction of thimble assembly is vertical, conversely, when motor is to be vertically arranged,
The telescopic direction of thimble assembly is horizontal, and both directions are not parallel, is to lift the body that push rod takes the drawbacks of such case is caused
Product is larger.
【Utility model content】
This utility model provides a kind of lifting push rod, solves the problems, such as in prior art that lifting push rod takes up room larger.
Above-mentioned technical problem is solved, this utility model is adopted the following technical scheme that：
A kind of lifting push rod, including motor, thimble assembly and the transmission component between the motor and thimble assembly,
Thimble assembly includes main shaft, two grades of biographies that the transmission component is included primary transmission unit and is connected with primary transmission unit
Moving cell, the primary transmission unit are connected with the output shaft of motor, the secondary transmission unit and the spindle drive
Connection, the primary transmission unit are worm and gear component, and the secondary transmission unit includes first gear and second gear, the
The crossed axis angle of one gear and second gear is in 90 degree, so that the axial direction of the output shaft of the axial direction of the main shaft and motor
It is parallel.
Using the beneficial effects of the utility model：
Two groups of gear units, i.e. primary transmission unit and secondary transmission unit, primary transmission are employed in this utility model
Unit is connected with the output shaft of motor, and secondary transmission unit is connected with the spindle drive, and primary transmission unit is worm gear
Worm component, both worm gear and worm screw crossed axis angle are in 90 degree, can realize 90 degree of transformations of transmission direction, and in secondary transmission unit,
The crossed axis angle of first gear and second gear is in also 90 degree, can also realize that 90 degree of transmission direction changes, when primary transmission unit with
Both during the combination transmission of secondary transmission unit, can realize that the axial direction of motor output shaft is parallel with the axial direction of main shaft, i.e.,
In 0 degree or 180 degree, the advantage of so design is that motor and thimble assembly concentrate the space for taking a direction, that is, work as motor
When being vertically arranged, the telescopic direction of thimble assembly is also vertical, is so not take up substantially horizontal space, conversely, when motor is horizontal
When, the telescopic direction of thimble assembly is also horizontal, is so not take up substantially vertical space, reduces the entirety of lifting push rod
Volume, reduces the space requirement required for lifting push rod is installed, while also beneficial to packaging and transporting.While this parallel direction
Design can realize larger thrust, faster speed and relatively higher rotational efficienty.
Preferably, the primary transmission unit includes worm screw and the worm gear with worm engaging, the worm screw is coaxially fixed
On the output shaft of the motor, the worm gear is helical gear.
Preferably, the lifting push rod also includes gear-box, the axial direction of the worm gear is intersected with gear chamber interior wall
Angled α, 2 °≤α≤60 °.
Preferably, the first gear is coaxial with the worm gear, the first gear and second gear are helical teeth cone
Gear.
Preferably, the lifting push rod includes gear-box, the transmission component is arranged in gear-box, the worm screw one
End is fixed on the output shaft of motor, and the other end is rotatably connected on gear-box.
Preferably, the worm gear center is provided with power transmission shaft, described power transmission shaft one end is provided with clutch shaft bearing, and the other end is provided with
Second bearing, the worm gear are located between clutch shaft bearing and second bearing.
Preferably, the lifting push rod includes gear-box, the transmission component is arranged in gear-box, second tooth
Wheel is fixedly connected on the end of the main shaft by connecting bushing, and the is provided between the second gear end face and gear chamber interior wall
Three bearings.
Preferably, the main shaft is provided with fourth bearing, the gear chamber interior wall spirogyrate into bearing cavity, the tooth
Wheel chamber interior wall is coated with bearing gasket plate on the bearing cavity, and the fourth bearing is limited in the bearing cavity and bearing
Between backing plate.
Preferably, described sleeve pipe component also includes inner and outer tubes, the main shaft is leading screw, and leading screw is positioned at said inner tube
Interior, leading screw is provided with nut, and nut is fixedly connected with inner tube.
These features of the present utility model and advantage will be detailed in following specific embodiment, accompanying drawing exposure.
【Description of the drawings】
Below in conjunction with the accompanying drawings this utility model is described further：
Structural representations of the Fig. 1 for this utility model embodiment one；
Schematic top plan views of the Fig. 2 for this utility model embodiment one；
Exploded perspective views of the Fig. 3 for this utility model embodiment one；
Fig. 4 is the schematic diagram of upper box lid in this utility model embodiment one；
Cross-sectional schematics of the Fig. 5 for this utility model embodiment one.
【Specific embodiment】
The technical scheme of this utility model embodiment is explained with reference to the accompanying drawing of this utility model embodiment and
Illustrate, but following embodiments are only preferred embodiment of the present utility model, and it is not all.Based on the embodiment in embodiment,
Those skilled in the art's obtained other embodiment on the premise of creative work is not made, belongs to of the present utility model
Protection domain.
Be described below for convenience, the "left", "right" that appears below, " on ", D score is with orientation shown in scheming
It is that reference is defined.
Embodiment 1
The present embodiment is a kind of lifting push rod, is mainly used on armarium, furniture item, is a kind of offer lift action
Electronic accessory, such as can be used on lifting hospital bed, or up-down desk and chair etc., as shown in figure 1, the present embodiment includes motor
1st, and the transmission component that is connected of the motor 1 and the thimble assembly 5 being connected with the transmission component, transmission component peace
It is mounted in gear-box 2, the gear-box 2 of the present embodiment includes lower box 21 and upper box lid 22, and motor 1 is externally provided with motor cover 10, electricity
Hood 10 is fixedly mounted on lower box 21.During running, motor 1 is rotated, and power is transmitted when rotating by motor 1 by transmission component
To on thimble assembly 5, thimble assembly 5 realizes Telescopic, one end of thimble assembly 5 with fixed by lifting object, so as to realize
The function of the object lifting.
Such as Fig. 1 to Fig. 3, specifically, the gear-box 2 in the present embodiment is located at the top of lifting push rod, 5 He of thimble assembly
Motor 1 is each provided at the bottom of gear-box 2, and described sleeve pipe component 5 includes main shaft, inner tube 52 and outer tube 53, and the main shaft is leading screw
51, leading screw 51 is located in said inner tube 52, and outer tube 53 is set in inner tube 52, and nut 54, nut are threaded with leading screw 51
54 are fixedly connected with inner tube 52, and when leading screw 51 is rotated, the nut 54 occurs axial displacement relative to leading screw 51, so as in driving
52 displacement of pipe, and outer tube 53 is fixed on the lower box 21 of gear-box 2, therefore leading screw 51 is when rotating, inner tube 52 be actually relative to
There is axial displacement in outer tube 53.
Two grades of biographies that transmission component in the present embodiment is included primary transmission unit and is connected with primary transmission unit
Moving cell, the primary transmission unit are connected with the output shaft of motor 1, the secondary transmission unit and the spindle drive
Connection, when motor 1 is rotated, drives the operation of primary transmission unit, when primary transmission unit runs, drives secondary transmission unit fortune
OK, leading screw 51 is driven to rotate when secondary transmission unit runs, so as to finally realize that inner tube 52 is stretched.
Primary transmission unit described in the present embodiment is worm and gear component, specifically includes worm screw 31 and worm gear 32, worm screw 31
Coaxial with the output shaft of motor 1, in the present embodiment, worm screw 31 is structure as a whole with the output shaft of motor 1, worm gear 32 and worm screw 31
Crossed axis angle be in 90 degree, the worm gear 32 in the present embodiment is helical gear, and the motor 1 of the present embodiment is vertically placed type, the output of motor 1
The axial direction of axle is vertical, and after primary transmission unit, the outbound course of power is converted to horizontal direction.And utilize snail
The transmission combination of 32 worm screws 31 is taken turns, larger gear ratio can be realized, while with certain self-lock ability.
Preferably, the worm screw 31 described in the present embodiment is made up of metal material, the worm gear 32 is thermoplastic material system
Into the worm screw of metal coordinates the worm gear of plastics, and in transmission process, noise is little, stable.
The secondary transmission unit includes the axle of first gear 41 and second gear 42, first gear 41 and second gear 42
The angle of cut is in 90 degree, and the first gear 41 and second gear 42 in the present embodiment is bevel gear, using that crossed axis angle is 90 degree
One gear 41 and second gear 42 are driven so that the power of script horizontal direction is converted into vertical direction again, make the silk
The axial direction of thick stick 51 is parallel with the axial direction of the output shaft of motor 1.The advantage of so design is, motor 1 and sleeve pipe group
Part 5 is concentrated and takes vertical space, without taking horizontal space, is reduced the volume of lifting push rod on the whole, is also convenient for
Packaging and transport.And, the transmission efficiency of bevel gear, transmission efficiency can reach more than 95%.
In order to further reduce the volume of gear-box 2, the present embodiment is optimized to the layout of transmission component, specifically,
In the present embodiment, the line direction of the output shaft of the output shaft of motor 1 and main shaft, substantially parallel with 2 length direction of gear-box, i.e.,
The line of the axle of the output shaft and leading screw 51 of motor 1, the axle of the worm gear 32 parallel with the front side wall or rear wall of gear-box 2
Angle [alpha] intersected with 2 inwall of gear-box then to direction, 2 °≤α≤60 °, with reference to Fig. 2, preferably, α is in the present embodiment
20°.This layout for being obliquely installed worm gear 32, can effectively reduce the width of gear-box 2, so as to reduce whole lifting push rod
Volume.
The center of the worm gear 32 is installed with power transmission shaft 33, and the end of power transmission shaft 33 is coaxially fixed with first gear 41, due to
Worm gear 32 is to be obliquely installed, therefore the power transmission shaft 33 is also to be obliquely installed, in order to avoid being obliquely installed to first gear 41 and the
The mesh degree of two gears 42 produces impact, and first gear 41 described in the present embodiment and second gear 42 are preferably all helical teeth cone
Gear, and during helical bevel gear transmission, noise is little.
In the present embodiment, in order to strengthen the connective stability of worm screw 31, the top of worm screw 31 is rotatably connected on gear-box 2
On, 3 and Fig. 4 are specifically can be found in, the top of the worm screw 31 is provided with adjusting set 311, and the roof of the upper box lid 22 is provided with use
In the mounting groove 221 of adjusting set described in Matching installation 311 so that worm screw 31 is optimized for by a unilateral fixed cantilever beam structure
The support beam structure that one two ends is fixed, effectively reduces the deformation of worm screw 31, improves the life-span；
In order to increase the stability of worm gear 32 and first gear 41,33 one end of the power transmission shaft is provided with clutch shaft bearing 34, separately
One end is provided with second bearing 35, and the worm gear 32 is located between clutch shaft bearing 34 and second bearing 35, clutch shaft bearing 34 and/or the
Two bearings 35 are oiliness bearing, and the diapire of the lower box 21 is provided with the first half grooves 211 and the second half grooves 212, the top box
The roof of lid 22 is provided with the 3rd half groove 222 and the 4th half groove 223, and clutch shaft bearing 34 is positioned installed in the first half 211 Hes of groove
In the installing space formed by 3rd half groove 222, second bearing 35 is positioned installed in the second half groove 212 and the 4th half grooves 223
In the installing space for being formed, the structure of bearing is respectively provided with using two ends, be effectively reduced power transmission shaft 33, the bounce of worm gear 32
Degree, while can also reduce the axial displacement of worm gear 32 so that worm gear 32 and worm screw 31 to engage compactness more preferable.
The second gear 42 is fixedly connected on the side wall ends of the main shaft by connecting bushing 43, referring specifically to Fig. 5,
One section near top of the leading screw 51 is construction section 511, is thread segment, connection is arranged with construction section 511 below construction section 511
Axle sleeve 43, the connecting bushing 43 are ladder axle sleeve, i.e., including upper semisection 431 and lower semisection 432, wherein upper semisection 431 is outer
Footpath is less than the external diameter of lower semisection 432, and the second gear 42 is set in the upper semisection 431 of connecting bushing 43, second tooth
3rd bearing 44 is provided between the top end face and the roof of upper box lid 22 of wheel 42, the roof of wherein upper box lid 22 is provided with accommodating
The upper bearing (metal) leg 224 of the 3rd bearing 44, first gear 41 are engaged on the lower section of second gear 42.So design effective
Control the axial location of second gear 42 so that the transmission of second gear 42 is more steady, also achieve the biography of moment of torsion in addition
Pass.
Meanwhile, the bottom of the construction section 511 of leading screw 51 is provided with fourth bearing 45, and fourth bearing 45 is arranged on connecting bushing 43
Between thread segment, bearing cavity 213 under the diapire of the lower box 21, is convexed into, fourth bearing 45 is arranged on bearing cavity
In 213, the lower box 21 is coated with bearing gasket plate 23 on the bearing cavity 213, the bearing backing plate 23 in the present embodiment
It is fixed by screws on the diapire of lower box 21, the fourth bearing 45 is limited in the bearing cavity 213 and bearing gasket
Between plate 23.
The effectively spacing axial location of fourth bearing 45 of the design, prevents the fourth bearing 45 from axial displacement occurring, in addition,
As leading screw 51 is when rotating, thrust can be produced to fourth bearing 45, and after being provided with bearing backing plate 23, can be by this part thrust
Be transferred on whole lower box 21, without impact being produced on the part inside lower box 21, especially can prevent to second gear
42nd, first gear 41 produces axial thrust, also protects indirectly worm gear 32 and worm screw 31, so as to play in protection lower box 21
The effect of portion's part, increases the service life.
Embodiment 2
The present embodiment is that secondary transmission unit is also worm and gear component, wherein first gear with the difference of embodiment 1
For worm screw, second gear is worm gear, and two groups of worm and gear components equally can also realize the axial direction of leading screw and the output of motor
Direction of principal axis is parallel, and the transmission of two groups of worm and gears, realizes bigger gear ratio.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, it is familiar with the those skilled in the art and should be understood that this utility model includes but is not limited to accompanying drawing and specific embodiment party above
Content described in formula.Any modification without departing from function and structure principle of the present utility model is intended to be included in claims
Scope in.
Claims (9)
1. it is a kind of to lift push rod, including motor, thimble assembly and the transmission component between the motor and thimble assembly, institute
Stating thimble assembly includes main shaft, it is characterised in that the transmission component is included primary transmission unit and passed with primary transmission unit
The secondary transmission unit of dynamic connection, the primary transmission unit are connected with the output shaft of motor, the secondary transmission unit
It is connected with the spindle drive, the primary transmission unit is worm and gear component, and the secondary transmission unit includes the first tooth
The crossed axis angle of wheel and second gear, first gear and second gear is in 90 degree, so that the axial direction of the main shaft and motor
The axial direction of output shaft is parallel.
2. push rod is lifted as claimed in claim 1, it is characterised in that the primary transmission unit includes worm screw and and worm engaging
Worm gear, the worm screw is coaxially fixed on the output shaft of the motor, and the worm gear is helical gear.
3. push rod is lifted as claimed in claim 2, it is characterised in that the lifting push rod also includes gear-box, the worm gear
Axial direction and gear chamber interior wall degree of cornering α, 2 °≤α≤60 °.
4. push rod is lifted as claimed in claim 3, it is characterised in that the first gear is coaxial with the worm gear, described first
Gear and second gear are helical bevel gear.
5. push rod is lifted as claimed in claim 2, it is characterised in that the lifting push rod includes gear-box, the transmission component
In gear-box, described worm screw one end is fixed on the output shaft of motor, and the other end is rotatably connected on gear-box.
6. push rod is lifted as claimed in claim 2, it is characterised in that the worm gear center is provided with power transmission shaft, the power transmission shaft one
End is provided with clutch shaft bearing, and the other end is provided with second bearing, and the worm gear is located between clutch shaft bearing and second bearing.
7. push rod is lifted as claimed in claim 1, it is characterised in that the lifting push rod includes gear-box, the transmission component
In gear-box, the second gear is fixedly connected on the end of the main shaft, the second gear by connecting bushing
3rd bearing is provided between end face and gear chamber interior wall.
8. push rod is lifted as claimed in claim 7, it is characterised in that the main shaft is provided with fourth bearing, in the gear-box
Wall evagination forms bearing cavity, and the gear chamber interior wall is coated with bearing gasket plate, the fourth bearing on the bearing cavity
It is limited between the bearing cavity and bearing backing plate.
9. push rod is lifted as described in one of claim 1 to 8, it is characterised in that described sleeve pipe component also includes inner and outer tubes,
The main shaft is leading screw, and in said inner tube, leading screw is provided with nut to leading screw, and nut is fixedly connected with inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621026929.2U CN206142730U (en) | 2016-08-31 | 2016-08-31 | Lifting pushing rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621026929.2U CN206142730U (en) | 2016-08-31 | 2016-08-31 | Lifting pushing rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206142730U true CN206142730U (en) | 2017-05-03 |
Family
ID=58619279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621026929.2U Active CN206142730U (en) | 2016-08-31 | 2016-08-31 | Lifting pushing rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206142730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429949A (en) * | 2016-08-31 | 2017-02-22 | 浙江捷昌线性驱动科技股份有限公司 | Lifting push rod |
-
2016
- 2016-08-31 CN CN201621026929.2U patent/CN206142730U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429949A (en) * | 2016-08-31 | 2017-02-22 | 浙江捷昌线性驱动科技股份有限公司 | Lifting push rod |
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