CN205992829U - Electric pushrod - Google Patents
Electric pushrod Download PDFInfo
- Publication number
- CN205992829U CN205992829U CN201620936790.9U CN201620936790U CN205992829U CN 205992829 U CN205992829 U CN 205992829U CN 201620936790 U CN201620936790 U CN 201620936790U CN 205992829 U CN205992829 U CN 205992829U
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- China
- Prior art keywords
- casing
- screw mandrel
- fixed
- conduit
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of electric pushrod, including casing, screw mandrel and motor, described motor via reducer structure is linked with screw mandrel, the front end of described screw mandrel and casing are fixed, the rear end of described screw mandrel extends to outside casing, nut on screw mandrel for the cooperation is fixed with push pipe phase, it is arranged with conduit outside described push pipe, described conduit and casing are fixed, screw mandrel rotates so that push pipe does axially reciprocating relative to conduit, it is formed with bearing chamber in described casing and be fixed with bearing, described bearing inner race is fixed with screw mandrel phase, first back-up ring is fixed with described screw mandrel, described first back-up ring is located relatively on front side of bearing.
Description
Technical field
This utility model is related to a kind of Vidacare corp and in particular to a kind of electric pushrod.
Background technology
Electric pushrod includes motor, reducing gear and screw mandrel, and motor is passed through reducing gear and linked with screw mandrel, silk
One end of bar is fixed in casing by bearing, and the other end of screw mandrel is provided with nut, and nut is fixed with push pipe, is arranged with outside push pipe
Conduit, conduit is fixed with casing phase, and motor output shaft rotates can make screw mandrel rotate, so that push pipe does axial reciprocating relative to conduit
Motion.
In use, screw mandrel meeting axial float is to affect the precision of electric pushrod use for electric pushrod；And due to screw mandrel
Itself beat, bearing clearance, screw mandrel and nut gap and the impact such as Impact direction when running, there is the wind that push pipe encountered by screw mandrel
Danger, has the generation of noise.
Content of the invention
The purpose of this utility model is to provide a kind of axle carrying out axial restraint to screw mandrel, can substantially reducing during screw mandrel motion
To gap, lifting precision, can prevent screw mandrel from touching push pipe, the electric pushrod that noise produces can be avoided.
This utility model adopts the following technical scheme that for achieving the above object：A kind of electric pushrod, including casing, screw mandrel and
Motor, described motor via reducer structure is linked with screw mandrel, and the front end of described screw mandrel and casing are relatively fixed, after described screw mandrel
End extends to outside casing, and nut on screw mandrel for the cooperation is fixed with push pipe, is arranged with conduit outside described push pipe, described conduit and
Casing is fixed, and screw mandrel rotates so that push pipe does axially reciprocating relative to conduit, is formed with bearing chamber and fixes in described casing
There is bearing, described bearing inner race is fixed with screw mandrel phase, described screw mandrel is fixed with the first back-up ring, described first back-up ring is located relatively at
On front side of bearing.
The above-mentioned axial restraint being provided for guarantee screw mandrel, when screw mandrel is subject to pulling force, the first back-up ring and bearing inner race offset,
Screw mandrel can be prevented to push pipe side shifting.Wherein, the first back-up ring can be split washer, and the first back-up ring can adopt various ways and screw mandrel
Mutually fix, such as make screw mandrel outer wall form the groove that oriented radially inner side extends, split washer is snapped in groove and can achieve
First back-up ring and the fixation of screw mandrel；And the axial gap of screw mandrel during screw mandrel assembling the first back-up ring, can be adjusted by adjusting packing ring.
Preferably, described bearing chamber interior walls are formed with the first annular groove extending to radial outside, described first annular
It is fixed with the second back-up ring, described bearing is located inside the second back-up ring in groove.When screw mandrel is subject to thrust, the second back-up ring and bearing outer ring
Offset, screw mandrel can be prevented toward casing side shifting.Wherein, the second back-up ring can be hole back-up ring, is filled hole back-up ring by needle-nose plierss
Fit in first annular groove.
Preferably, being arranged with the first sleeve on described screw mandrel, described first sleeve is located between the first back-up ring and bearing.
Carry out bearing and screw mandrel assembling when, so that the end face of bearing inner race and the first sleeve end face is offseted, the positioning of bearing can be easy to；When
When screw mandrel is subject to pulling force, the first back-up ring exerts a force to the first sleeve, and the first sleeve is countershaft to hold inner ring force, and the first sleeve can ensure screw mandrel
By the force area in the case of pulling force；The setting of the first sleeve is also convenient for the installation of screw mandrel gear.
Preferably, described screw mandrel includes front canned paragraph, has threaded thread segment and spacing section afterwards, before described thread segment
The front canned paragraph at end is fixed in casing, thread segment and be located at rear spacing section of thread segment rear end and extend to outside casing, described spiral shell
Mother set is located on described thread segment, the diameter with diameter greater than latter spacing section of described thread segment, and described latter spacing section is arranged with
Second sleeve and the third gear circle for preventing second sleeve disengaging screw mandrel, shape between described second sleeve and thread segment rear end face
Become to have gap.Second sleeve and the setting of third gear circle, can avoid the nut abjection silk when the microswitch of electric pushrod lost efficacy
Bar；Gap setting between second sleeve and thread segment rear end face can prevent the nut will not be stuck when rushing to summit, and can play cushioning effect.
Preferably, being arranged with resilient protection circle in the circumference of described second sleeve, the external diameter of described resilient protection circle is big
Diameter in the external diameter of described second sleeve, wire rod thread section；Described second sleeve is damped sleeve；Described nut includes first
Section and second segment, first paragraph and second segment constitute ledge structure, and the outer wall of second segment is formed with the inwall of push pipe and matches
Helicitic texture, push pipe is screwed with second segment and is offseted with the end face of first paragraph；The first paragraph of described nut and pipe inner wall
It is formed with the position limiting structure cooperating, the radial direction that described position limiting structure is used for described nut is spacing；The first paragraph of described nut
Section is in regular polygon；Or the first paragraph of described nut and pipe inner wall are formed with the projection cooperating and fluting, described convex
Rise and fluting is axially arranged along screw mandrel.
When screw mandrel is touched with push pipe, due to the setting of resilient protection circle, screw mandrel and second sleeve directly contact can be avoided
Push pipe inwall, and the generation of noise can be prevented.Wherein, the second segment of nut is used for the fixation with push pipe, and the first paragraph of nut is used
In with tubes fit, with the radial direction that carries out nut spacing so that guiding is formed to nut；The sagittal plane of the first paragraph of nut can all with
Pipe inner wall is adapted, and also can partially radially face and pipe inner wall be adapted；Wherein, if nut forms fluting, can be in conduit
Front end（One end near casing）Position setting microswitch of corresponding fluting etc., projection is used for slotted engagement to carry out nut
First paragraph spacing.
Preferably, described reducing gear includes the gear being fixed on screw mandrel, described gear is set on screw mandrel and leads to
Cross pin to fix with screw mandrel phase.Wherein, pin is served only for transmitting torque, and the gear of reducing gear can be made axially all not stress.
Preferably, described casing is formed with some insulated columns be arrangeding in parallel with screw mandrel, the lead-out wire of motor and fine motion
The lead-out wire of switch is all laid between insulated column and cabinet wall, and described insulated column is fixed with packing ring, the drawing of described motor
The lead-out wire of outlet and microswitch is all limited between packing ring and casing diapire；Described motor lead-out wire and microswitch are drawn
Outlet is arranged in series；Described casing is wholely set with described insulated column.Above-mentioned it is provided for wiring of the present utility model.
Preferably, described conduit and casing coordinate fixing so that conduit is near a side end face of casing and described casing phase
Support, described casing is formed with the first fixed part stretching out, described conduit fixing with casing cooperation so that the first fixed position
Offset in conduit and with pipe inner wall, or described first fixed part is formed with the tube wall shape near deceleration box one end with conduit
The end face locating slot that shape is adapted, described conduit embeds described end face locating slot so that described conduit is solid with described casing cooperation
Fixed；Described conduit is fixed with sealing member away from one end of casing, and described sealing member is formed with second extending in conduit and fixes
Portion, described second fixed part shape is adapted with pipe inner wall shape, and described sealing member is formed with the through hole passing through for push pipe.Its
In, conduit of the present utility model and casing adopt external form and end face positioning.
Preferably, described conduit radial section is identical everywhere, the opposite end of described conduit is each formed with tapping screw
Installing hole, described casing and sealing member are each formed with the fabrication hole passing through for tapping screw.Conduit leaves tapping screw peace in itself
Dress bottom outlet, is directly screwed into fixation with tapping screw, and conduit can take length according to actually used, other need not process, directly cuts
?.
Preferably, between described conduit and casing, being equipped with the rubber blanket of sealing, institute between described casing and case lid
State motor and be fixed on outside casing, between described motor and casing, between push pipe and fluid sealant, be equipped with the O-ring of sealing, described
Top push pipe is provided with plug away from one end of casing, and described plug is pressed in described push pipe and solid with push pipe phase by securing member
Fixed.The above-mentioned sealing being provided between each part of this utility model.
This utility model has and can carry out axial restraint to screw mandrel, can substantially reduce axial gap during screw mandrel motion, carry
Rise precision, can prevent screw mandrel from touching push pipe, with the advantage avoiding noise to produce.
Brief description
Fig. 1 is a kind of screw mandrel of the present utility model structural representation fixing with casing；
Fig. 2 is the screw mandrel of the present utility model another kind of structural representation fixing with casing；
Fig. 3 is a kind of structural representation of screw mandrel of the present utility model；
Fig. 4 is a kind of structural representation of casing of the present utility model, conduit and sealing member；
Fig. 5 is a kind of structural representation of casing of the present utility model and tubes fit；
Fig. 6 is a kind of structural representation of casing of the present utility model；
Fig. 7 is another kind of structural representation of casing of the present utility model；
Fig. 8 is a kind of schematic diagram of radial section of nut first paragraph of the present utility model；
Fig. 9 is the schematic diagram of another kind of radial section of nut first paragraph of the present utility model..
Specific embodiment
Shown in Fig. 1, Fig. 2, Fig. 3, a kind of electric pushrod of the present utility model, including casing 1, screw mandrel 2 and motor 3, electricity
Machine 3 is linked with screw mandrel 2 by reducing gear, and the output shaft rotation of motor 3 can make screw mandrel 2 circumferentially rotate.Screw mandrel 2 includes front fixation
Section 21, the threaded thread segment 22 of tool and spacing section 23 afterwards, the fixing bearing 4 that passes through of the front canned paragraph 21 of thread segment 22 front end is in case
In body 1, thread segment 22 and be located at rear spacing section 23 of thread segment rear end and extend to outside casing 1.Nut 5 on screw mandrel 2 for the cooperation
Mutually fix with push pipe 6, be arranged with conduit 7, conduit 7 and casing 1 fixation outside push pipe 6, screw mandrel 2 rotates so that push pipe 6 is with respect to conduit 7
Do axially reciprocating.
It is formed with bearing chamber 11, bearing 4 inner ring and screw mandrel 2 are mutually fixed, and screw mandrel 2 is arranged with the first sleeve 31 in casing 1
With the first back-up ring 32, the first back-up ring 32 is split washer and is relatively fixed with screw mandrel 2, the first sleeve 31 be located at the first back-up ring 32 with
Between bearing 4, the first back-up ring 32 is located on front side of bearing 4.Bearing chamber 11 inwall forms the first annular of oriented radial outside extension
Groove 12, is fixed with the second back-up ring 13 in first annular groove 12, the second back-up ring 13 is hole back-up ring.Second back-up ring 13 corresponds to bearing 4
Outer ring, the inner ring of the corresponding bearing 4 of the first back-up ring 32, the front end face of the first sleeve 31 is offseted with the first back-up ring 32, the first sleeve
31 rear end face is offseted with bearing 4 inner ring, the external diameter of the first sleeve and the diameter of bearing inner race, the external diameter one of the first back-up ring 32
Cause, the first back-up ring 32 and the second back-up ring 13 are respectively positioned on outside bearing.
Nut 5 is set on thread segment 22, the diameter with diameter greater than latter spacing section 23 and front canned paragraph 21 of thread segment 22,
One side end face of bearing and the front end face of thread segment 22 offset, the rear end face phase of another side end face of bearing and the first sleeve 31
Support.Second sleeve 33 is arranged with spacing section 23 and for preventing second sleeve 33 from departing from the third gear circle 34 of screw mandrel 2 afterwards, second
It is formed with gap, third gear circle 34 is split washer, second sleeve 33 is damping sleeve between sleeve 33 and thread segment 22 rear end face
Cylinder.The axial cross section of second sleeve 33 is in I-shaped, and the circumference of second sleeve 33 is arranged with resilient protection circle 35, and elasticity is protected
The external diameter of guard ring 35 is more than the external diameter of second sleeve 33, the diameter of screw mandrel 2 thread segment 22.
Reducing gear includes the gear 8 being fixed on screw mandrel 2, and gear 8 is set on screw mandrel 2 and by pin 9 and screw mandrel 2
Mutually fix.
Shown in Fig. 1, Fig. 6, Fig. 7, casing 1 is formed with some insulated columns 14 be arrangeding in parallel with screw mandrel 2, the motor of motor
Lead-out wire 15 is connected with the switch lead-out wire 16 of microswitch so that motor and microswitch are connected, the motor lead-out wire 15 of motor
With the switch lead-out wire 16 of microswitch is all laid between insulated column 14 and casing 1 inwall, insulated column 14 is fixed with packing ring
17, packing ring 17 is internal tooth packing ring, and motor lead-out wire 15 and switch lead-out wire 16 are limited between packing ring 17 and casing diapire.Its
In, insulated column 14 is to be integrally formed during casing 1 compression mod.
Shown in Fig. 4, Fig. 5, casing 1 is formed with the first fixed part stretching out, and is formed with and conduit 7 outside casing 1
The end face locating slot that tube wall shape is adapted, the circumference that conduit 7 embeds end face locating slot to ensure conduit 7 is spacing, and conduit 7 leans on
One side end face of nearly casing is offseted with casing.Conduit 7 is fixed with sealing member 10 away from one end of casing 1, and sealing member 10 is formed with
Extend to the second fixed part 19 in conduit 7, the second fixed part 19 shape is adapted with conduit 7 inner wall shape, sealing member 10 shape
Become to have the through hole passing through for push pipe 7.Radial section is identical everywhere for conduit 7, and the opposite end of conduit 7 is each formed with tapping screw peace
Dress hole 24, casing 1 and sealing member 10 are each formed with the fabrication hole passing through for tapping screw 25.
Shown in Fig. 3, Fig. 8, Fig. 9, nut 5 includes first paragraph 51 and second segment 52, and first paragraph 51 and second segment 52 are constituted
Ledge structure, the outer wall of second segment 52 is formed with the helicitic texture matching, push pipe 6 and second segment 52 spiral shell with the inwall of push pipe 6
Stricture of vagina is fixed and is offseted with the end face of first paragraph 51.First paragraph 51 and conduit 7 inwall of nut 5 are formed with the spacing knot cooperating
Structure, position limiting structure be used for nut radial direction is spacing and guiding during nut motion, position limiting structure include the formation of conduit 7 inwall to
Fluting 43 on the interior projection 40 extending of conduit, the first paragraph 51 of nut, raised and fluting is all axially arranged along screw mandrel, projection 40
Offset with the fluting inwall of nut first paragraph 51, and conduit 7 front end is fixed with microswitch 41 He with respect to the position of this fluting
Switch fixing casing 42.
Between conduit 7 and casing 1, between casing 1 and case lid 20, it is equipped with the rubber blanket of sealing, motor 3 is fixed on case
Outside body 1, the output shaft of motor 3 extends in casing 1, between motor 3 and casing 1, is equipped with sealing between push pipe 6 and sealing member 10
O-ring, push pipe 6 is provided with plug 28 in the one end away from casing 1, in plug 28 press-in push pipe and by securing member and push pipe
6 mutually fix.
When screw mandrel is subject to pulling force（Push pipe is to when moving in the direction away from casing）When, screw mandrel play backward, the first back-up ring is to
One sleeve force, so that the first sleeve and bearing inner race offset, due to the presence of bearing chamber, screw mandrel movement backward is limited.
When screw mandrel is subject to thrust（When push pipe is to casing side shifting）When, screw mandrel play forward, screw mandrel drives bearing outer ring movement with second
Back-up ring offsets, so that screw mandrel movement forward is limited.This utility model can effectively prevent the axial float of screw mandrel, to improve electricity
The precision of push rod,
Beated in itself due to screw mandrel, bearing clearance, screw mandrel and nut gap and the impact such as Impact direction when running, exist
The risk of push pipe encountered by screw mandrel, has the generation of noise, and the second sleeve of this utility model screw mandrel and third gear circle can avoid this
Individual problem.When screw rod jitter, due to resilient protection back-up ring external diameter be more than screw mandrel diameter, resilient protection back-up ring can with push pipe in
Wall contacts, and can avoid the generation of noise.And second sleeve is additionally operable to prop up nut when microswitch lost efficacy, to avoid nut to take off
Go out；Second sleeve can prevent nut not stuck when rushing to summit with the setting in the gap of wire rod thread section, can play cushioning effect.
Claims (10)
1. it is characterised in that including casing, screw mandrel and motor, described motor via reducer structure is joined a kind of electric pushrod with screw mandrel
Dynamic, the front end of described screw mandrel and casing are relatively fixed, and the rear end of described screw mandrel extends to outside casing, spiral shell on screw mandrel for the cooperation
Mother is fixed with push pipe, is arranged with conduit, described conduit and casing are fixed outside described push pipe, and screw mandrel rotates so that push pipe is relative to conduit
Do axially reciprocating, be formed with bearing chamber in described casing and be fixed with bearing, described bearing inner race is fixed with screw mandrel phase, institute
State and the first back-up ring is fixed with screw mandrel, described first back-up ring is located relatively on front side of bearing.
2. electric pushrod according to claim 1 is it is characterised in that described bearing chamber interior walls are formed with and prolong to radial outside
The first annular groove stretched, is fixed with the second back-up ring in described first annular groove, described bearing is located inside the second back-up ring.
3. electric pushrod according to claim 1 and 2 is it is characterised in that being arranged with the first sleeve on described screw mandrel, described
First sleeve is located between the first back-up ring and bearing.
4. electric pushrod according to claim 1 and 2 is it is characterised in that described screw mandrel includes front canned paragraph, has screw thread
Thread segment and latter spacing section, the front canned paragraph of described thread segment front end is fixed in casing, thread segment and be located at thread segment after
End rear spacing section extend to outside casing, described nut is set on described thread segment, described thread segment with diameter greater than rear limit
The diameter of position section, described latter spacing section is arranged with second sleeve and the third gear circle for preventing second sleeve from departing from screw mandrel,
It is formed with gap between described second sleeve and thread segment rear end face.
5. electric pushrod according to claim 4 is it is characterised in that be arranged with elasticity guarantor in the circumference of described second sleeve
Guard ring, the external diameter of described resilient protection circle is more than the external diameter of described second sleeve, the diameter of wire rod thread section；Described second sleeve
For damped sleeve；
Described nut includes first paragraph and second segment, and first paragraph and second segment constitute ledge structure, the outer wall of second segment and push pipe
Inwall be formed with the helicitic texture matching, push pipe is screwed with second segment and is offseted with the end face of first paragraph；
The first paragraph of described nut and pipe inner wall are formed with the position limiting structure cooperating, and described position limiting structure is used for described spiral shell
Female radial direction is spacing；The first paragraph section of described nut is in regular polygon；Or the first paragraph of described nut and pipe inner wall are formed
There are the projection cooperating and fluting, described raised and fluting is axially arranged along screw mandrel.
6. electric pushrod according to claim 1 is it is characterised in that described reducing gear includes the tooth being fixed on screw mandrel
Wheel, described gear is set on screw mandrel and is fixed with screw mandrel phase by pin.
7. electric pushrod according to claim 1 and 2 is it is characterised in that described casing is formed with some parallel with screw mandrel set
The insulated column put, the lead-out wire of motor and the lead-out wire of microswitch are all laid between insulated column and cabinet wall, described every
Packing ring is fixed with post, the lead-out wire of described motor and the lead-out wire of microswitch be all limited in packing ring and casing diapire it
Between；
Described motor lead-out wire is arranged in series with microswitch lead-out wire；Described casing is wholely set with described insulated column.
8. electric pushrod according to claim 1 and 2 it is characterised in that the cooperation of described conduit and casing fixing so that conduit
A side end face near casing is offseted with described casing, and described casing is formed with the first fixed part stretching out, described conduit
Fix so that the first fixed position offsets in conduit and with pipe inner wall with casing cooperation, or described first fixed part is formed with
The end face locating slot being adapted with the tube wall shape near deceleration box one end for the conduit, described conduit embeds described end face locating slot
So that described conduit is fixed with described casing cooperation；
Described conduit is fixed with sealing member away from one end of casing, and described sealing member is formed with second extending in conduit and fixes
Portion, described second fixed part shape is adapted with pipe inner wall shape, and described sealing member is formed with the through hole passing through for push pipe.
9. electric pushrod according to claim 8 it is characterised in that described conduit radial section is identical everywhere, described conduit
Opposite end be each formed with tapping screw installing hole, the technique that described casing and sealing member are each formed with passing through for tapping screw
Hole.
10. electric pushrod according to claim 8 or claim 9, is characterised by between described conduit and casing, described casing and case
It is equipped with the rubber blanket of sealing, described motor is fixed on outside casing, between described motor and casing, push pipe and sealing between lid
It is equipped with the O-ring of sealing, described push pipe is provided with plug away from one end of casing, described plug is pressed into described push pipe between part
Interior and fixed with push pipe phase by securing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620936790.9U CN205992829U (en) | 2016-08-25 | 2016-08-25 | Electric pushrod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620936790.9U CN205992829U (en) | 2016-08-25 | 2016-08-25 | Electric pushrod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992829U true CN205992829U (en) | 2017-03-01 |
Family
ID=58107699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620936790.9U Withdrawn - After Issue CN205992829U (en) | 2016-08-25 | 2016-08-25 | Electric pushrod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205992829U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253568A (en) * | 2016-08-25 | 2016-12-21 | 浙江联宜电机有限公司 | Electric pushrod |
| CN114024402A (en) * | 2021-11-11 | 2022-02-08 | 惠州市汉泰科传动***有限公司 | Electric push rod |
-
2016
- 2016-08-25 CN CN201620936790.9U patent/CN205992829U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253568A (en) * | 2016-08-25 | 2016-12-21 | 浙江联宜电机有限公司 | Electric pushrod |
| WO2018036471A1 (en) * | 2016-08-25 | 2018-03-01 | 浙江联宜电机有限公司 | Electric push rod |
| CN106253568B (en) * | 2016-08-25 | 2018-05-22 | 浙江联宜电机有限公司 | Electric pushrod |
| CN114024402A (en) * | 2021-11-11 | 2022-02-08 | 惠州市汉泰科传动***有限公司 | Electric push rod |
| CN114024402B (en) * | 2021-11-11 | 2023-07-14 | 惠州市汉泰科传动***有限公司 | Electric push rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Qiaofen Inventor before: Ma Yaohui |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170301 Effective date of abandoning: 20180522 |