CN108757872A - Electric pushrod push pipe seal protection structure - Google Patents
Electric pushrod push pipe seal protection structure Download PDFInfo
- Publication number
- CN108757872A CN108757872A CN201810925330.XA CN201810925330A CN108757872A CN 108757872 A CN108757872 A CN 108757872A CN 201810925330 A CN201810925330 A CN 201810925330A CN 108757872 A CN108757872 A CN 108757872A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- push pipe
- ring
- hole
- sealing
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2418—Screw seals, wipers, scrapers or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Installation Of Indoor Wiring (AREA)
- Gasket Seals (AREA)
Abstract
The object of the present invention is to provide a kind of can realize to be sealed between push pipe and conduit, and the better electric pushrod push pipe seal protection structure of sealing effect.To achieve the above object, the present invention adopts the following technical scheme that：A kind of electric pushrod push pipe seal protection structure, electric pushrod includes shell, the one end of conduit far from shell, which is arranged, is fixed with sealing element, the sealing element includes the plate portion positioned at conduit axial direction side, positioned at the first ring portion of conduit peripheral side, first ring portion is fixedly connected with plate portion circumferential direction outer rim so that sealing element structure cylindrical in shape, a side end face of the plate portion far from conduit is equipped with the second ring portion, sealing ring is equipped in second ring portion, the sealing ring is formed with sealing ring through hole, the plate portion of the sealing element is formed with sealing element through-hole, the sealing ring through-hole wall offsets with the push pipe outer wall, it is arranged with protective case outside the sealing element and sealing ring, the protective case heat is shunk to wrap up the sealing element and sealing ring.
Description
Technical field
The present invention relates to electric pushrods, and in particular to the seal protection structure between electric pushrod push pipe and conduit.
Background technology
Electric pushrod is a kind of power-driven gear for the straight reciprocating motion energy converting electrical energy into push rod, be can be used for each
It is used as executive component in the simple or complicated technological process of kind, to realize far distance controlled, centralized control or automatically control,
Have many advantages, such as that performance safety is reliable, is active in one's movements, operates steadily, low noise.But if electric pushrod is for scooter, electronic
When wheelchair, serviceable multifunctional nursing sick bed etc. have waterproof requirement, existing line handspike motor cannot be satisfied requirement.Existing push pipe with
Sealing between conduit usually leans on O-ring seals to realize, but push pipe activity is easy to drive O-ring seals movement, so that O shapes seal
Circle displacement results even in O-ring and is stuck between push pipe and conduit to lead to the seal failure between push pipe and conduit.
Invention content
The object of the present invention is to provide a kind of can realize to be sealed between push pipe and conduit, and the better electric pushrod of sealing effect
Push pipe seal protection structure.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of electric pushrod push pipe seal protection structure, electricity
Dynamic push rod includes shell, one end of lead screw be located in shell and and motor linkage, be fixed with conduit, the other end of lead screw on shell
In conduit, and lead screw is located at the part in conduit and is formed with helicitic texture and is combined with nut, is fixed on the nut
Push pipe, lead screw rotate so that push pipe along conduit move axially, it is characterised in that the one end of conduit far from shell be arranged be fixed with it is close
Sealing, the sealing element include plate portion, the first ring portion positioned at conduit peripheral side positioned at conduit axial direction side, first ring portion
It is fixedly connected with plate portion circumferential direction outer rim so that sealing element structure cylindrical in shape, a side end face of the plate portion far from conduit is equipped with the
Two ring portions, second ring portion is interior to be equipped with sealing ring, and the sealing ring is formed with sealing ring through hole, the plate portion shape of the sealing element
At having sealing element through-hole, the sealing ring through-hole wall to offset with the push pipe outer wall, it is arranged outside the sealing element and sealing ring
There are protective case, the protective case heat to shrink to wrap up the sealing element and sealing ring, the protective case, which has, is located at catheter shaft
Protective case axial part to side and the protective case circumferential portion positioned at conduit peripheral side, first ring portion are limited in protective case week
To between portion and conduit, the sealing ring is limited between protective case axial part and plate portion.
The fixed effect of sealing ring of the present invention is more preferable, and push pipe movement will not can select volume bigger with dynamic seal ring activity
Intensity better seal circle, the present invention can guarantee the effect of the sealing between push pipe and conduit, and sealing effect is preferable.
Preferably, the plate portion, which is equipped on the end face of the second ring portion, is formed with locating slot, sealing ring axial direction side is set
It is useful for the positioning protrusion coordinated with locating slot.Above-mentioned setting is fixed convenient for the positioning of sealing ring.
Preferably, the trapezoidal setting in the locating slot cross section and positioning protrusion cross section.Above-mentioned setting is convenient for close
The positioning of seal is fixed.
Preferably, the locating slot is annular groove, positioning protrusion structure setting in a ring.Above-mentioned setting is convenient for close
The positioning of seal is fixed.
Preferably, second ring portion is formed with placing groove with plate portion, fluid sealant is filled in the placing groove, it is described
Sealing ring is fixed by the fluid sealant with sealing element.Above-mentioned setting is so that the fixed effect of sealing ring is more preferable, to improve sealing
Effect.
Preferably, the internal diameter of the sealing ring through hole is gradually reduced from the inside to the outside, the sealing ring through hole is far from plate portion
One end inner wall offset with the push pipe.Above-mentioned setting is to reduce the contact area of sealing ring and push pipe, to ensure sealing effect
While fruit, push pipe is axially moved to avoid sealing ring obstruction.
Preferably, the sealing ring through hole is made of one section of through-hole and logical aperture leakage, the internal diameter that one section of the through-hole and
The internal diameter of logical aperture leakage is gradually reduced from the inside to the outside, and the axial length of the logical aperture leakage is more than the axial direction of one section of the through-hole
Length, the internal diameter of logical aperture leakage amplitude of successively decreasing are successively decreased amplitude more than the internal diameter of one section of the through-hole, lead to aperture leakage compared with through-hole
One section closer to plate portion.Above-mentioned setting is to ensure the intensity of sealing ring, to avoid the sealing of sealing ring and push pipe contact portion
Failure.
Preferably, a side end face of the sealing ring far from plate portion forms sealing ring protrusion, the sealing ring protrusion is in
Annular setting, the one end of the sealing ring protrusion inner face far from plate portion offset with push pipe outer surface, the protective case axial part
It is formed with the protective case through-hole stepped down to the sealing ring protrusion, the sealing ring protrusion passes through protective case through-hole to extend to
It is axially external to state protective case axial part.Above-mentioned setting is so that the bigger that sealing ring can be arranged, to ensure the intensity of sealing ring, to keep away
Exempt from the seal failure of sealing ring and push pipe contact portion.
Preferably, the sealing ring protrusion outer diameter continuously decreases from the inside to the outside.Above-mentioned setting is heat-shrinked convenient for protective case,
In order to which protective case wraps sealing ring.
Preferably, the angle of the protective case axial part and protective case circumferential portion is formed with and allows bit space.It is above-mentioned to set
It sets and fold occurs after being in thermal contraction to avoid protective case within angle, to ensure the fixed effect after protective case is heat-shrinked, to protect
Demonstrate,prove the fixed effect of sealing ring.
The present invention can select volume greater strength better seal circle, the present invention to can guarantee that the sealing between push pipe and conduit is imitated
Fruit, and sealing effect is preferable.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the present invention；
Fig. 2 is enlarged drawing at the A of Fig. 1.
Specific implementation mode
Below according to the drawings and specific embodiments, the invention will be further described.
Shown in Fig. 1, Fig. 2, a kind of electric pushrod push pipe seal protection structure of the invention, electric pushrod includes shell,
One end of lead screw be located in shell and and motor linkage, be fixed with conduit 1 on shell, the other end of lead screw is located in conduit 1, and
The part that lead screw is located in conduit 1 is formed with helicitic texture and is combined with nut, is fixed with push pipe 2 on nut, lead screw rotation with
Push pipe 2 is set to be moved axially along conduit 1, the one end of conduit 1 far from shell, which is arranged, is fixed with sealing element 3, and sealing element 3 includes being located to lead
The plate portion 31 of pipe axial direction side, the first ring portion 32 positioned at conduit peripheral side, the first ring portion 32 and the circumferential outer rim phase fixed of plate portion 31
Determine so that 3 structure cylindrical in shape of sealing element, a side end face of the plate portion 31 far from conduit 2 are equipped with the second ring portion 33, the second ring portion 33
Interior to be equipped with sealing ring 4, sealing ring 4 is formed with sealing ring through hole 41, and the plate portion 31 of sealing element 3 is formed with sealing element through-hole 311, close
41 inner wall of seal through-hole offsets with 2 outer wall of push pipe, and protective case 5 is arranged with outside sealing element 3 and sealing ring 4, and 5 heat of protective case is shunk
With environmental sealing part 3 and sealing ring 4, protective case 5 has the protective case axial part 51 for being located at the axial side of conduit 1 and is located at conduit 1
The protective case circumferential portion 52 of peripheral side, the first ring portion 32 are limited between protective case circumferential portion 52 and conduit 1,4 quilt of sealing ring
It is limited between protective case axial part 51 and plate portion 31.Wherein, plate portion 31 is equipped with the end face of the first ring portion 32 equipped with third ring
Portion 35, sealing element through-hole run through third ring portion 35, and push pipe 2 is fixed with sealing element, so that push pipe outer end is located in third ring portion 35
Side.Wherein, end face of the plate portion 31 equipped with the first ring portion 32 is equipped with the 4th ring portion 36, and conduit 1 is fixed with sealing element so that conduit 1
Outer end is between the 4th ring portion 36 and the first ring portion 32.
Plate portion 31 is equipped with the locating slot 34 that is formed on the end face of the second ring portion 32, the axial side of sealing ring 4 be equipped with for
The positioning protrusion 42 that locating slot 34 coordinates, the trapezoidal setting in 34 cross section of locating slot and 42 cross section of positioning protrusion, locating slot
34 be annular groove, the structure setting in a ring of positioning protrusion 42.
Sealing element 3 is fixed by trip bolt 6 with push pipe, and trip bolt 6 is arranged along the parallel lines of push pipe axis, the second ring
Portion 33 is formed with placing groove with plate portion 31, and the second ring portion 33 is formed with the screw hole for coordinating trip bolt 6, screw hole and placing groove
It communicates, fluid sealant is filled in placing groove, sealing ring 4 is fixed by fluid sealant and sealing element 3, and fluid sealant is used for trip bolt
6 are auxiliarily fixed.
The internal diameter of sealing ring through hole 41 is gradually reduced from the inside to the outside, one end inner wall of the sealing ring through hole 41 far from plate portion 31 with
Push pipe offsets.Sealing ring through hole 41 is made of one section 411 of through-hole and logical aperture leakage 412, the internal diameter and through-hole two that one section 411 of through-hole
The internal diameter of section 412 is gradually reduced from the inside to the outside, leads to the axial length of one section 412 more than through-hole of the axial length of aperture leakage 412,
The successively decrease internal diameter of one section 411 less than through-hole of amplitude of the internal diameter of logical aperture leakage 412 successively decreases amplitude, and logical aperture leakage 412 is located at through-hole one
411 axially inner sides of section（I.e. logical aperture leakage 412 is compared with one section 411 of through-hole closer to plate portion 31）.Sealing ring 4 far from plate portion 31 one
Side end face forms sealing ring protrusion 44, and sealing ring protrusion 44 is arranged in a ring, and sealing ring 44 inner faces of protrusion are far from plate portion 31
One end offsets with 2 outer surface of push pipe, and protective case axial part 51 is formed with the protective case through-hole 511 stepped down to sealing ring protrusion, close
Seal protrusion 44 passes through protective case through-hole 511 axially external to extend to protective case axial part 51, and sealing ring is convex, and 44 outer diameters are by interior
To continuously decreasing outside.Wherein, the angle of protective case axial part 51 and protective case circumferential portion 52, which is formed with, allows bit space 53.
The present invention has the advantages that the more preferable sealing ring of volume greater strength, the present invention can be selected to can guarantee between push pipe and conduit
Sealing effect, and sealing effect is preferable.
Claims (10)
1. a kind of electric pushrod push pipe seal protection structure, it is characterised in that electric pushrod includes shell, and one end of lead screw is located at
In shell and and motor linkage, be fixed with conduit on shell, the other end of lead screw is located in conduit, and lead screw is located in conduit
Part is formed with helicitic texture and is combined with nut, and push pipe is fixed on the nut, and lead screw rotates so that push pipe is along catheter shaft
To movement, it is characterised in that the one end of conduit far from shell, which is arranged, is fixed with sealing element, and the sealing element includes being located at catheter shaft
Plate portion to side, the first ring portion positioned at conduit peripheral side, first ring portion are fixedly connected with plate portion circumferential direction outer rim so that close
Sealing structure cylindrical in shape, a side end face of the plate portion far from conduit are equipped with the second ring portion, are equipped in second ring portion close
Seal, the sealing ring are formed with sealing ring through hole, and the plate portion of the sealing element is formed with sealing element through-hole, and the sealing ring is logical
Hole inner wall offsets with the push pipe outer wall, and protective case is arranged with outside the sealing element and sealing ring, and the protective case heat is shunk
To wrap up the sealing element and sealing ring, the protective case has positioned at the protective case axial part of conduit axial direction side and positioned at conduit
The protective case circumferential portion of peripheral side, first ring portion are limited between protective case circumferential portion and conduit, the sealing ring quilt
It is limited between protective case axial part and plate portion.
2. electric pushrod push pipe seal protection structure according to claim 1, it is characterised in that the plate portion is equipped with second
Locating slot is formed on the end face of ring portion, sealing ring axial direction side is equipped with the positioning protrusion for coordinating with locating slot.
3. electric pushrod push pipe seal protection structure according to claim 2, it is characterised in that the locating slot cross section
With the trapezoidal setting in positioning protrusion cross section.
4. electric pushrod push pipe seal protection structure according to claim 2, it is characterised in that the locating slot is annular
Slot, positioning protrusion structure setting in a ring.
5. electric pushrod push pipe seal protection structure according to claim 1 or 2, it is characterised in that second ring portion with
Plate portion is formed with placing groove, and fluid sealant is filled in the placing groove, and the sealing ring is solid by the fluid sealant and sealing element
It is fixed.
6. electric pushrod push pipe seal protection structure according to claim 1, it is characterised in that the sealing ring through hole
Internal diameter is gradually reduced from the inside to the outside, and the sealing one end inner wall of the ring through hole far from plate portion offsets with the push pipe.
7. electric pushrod push pipe seal protection structure according to claim 6, it is characterised in that the sealing ring through hole by
One section of through-hole and logical aperture leakage are constituted, and the internal diameter of the internal diameter and logical aperture leakage that one section of the through-hole is gradually reduced from the inside to the outside,
The axial length of the logical aperture leakage is more than the axial length of one section of the through-hole, and the internal diameter of logical aperture leakage amplitude of successively decreasing is small
Successively decrease amplitude in one section of internal diameter of the through-hole, leads to aperture leakage compared with one section of through-hole closer to plate portion.
8. the electric pushrod push pipe seal protection structure according to claim 1 or 6 or 7, it is characterised in that the sealing ring
A side end face far from plate portion forms sealing ring protrusion, and the sealing ring protrusion is arranged in a ring, sealing ring protrusion inner end
The one end of face far from plate portion offsets with push pipe outer surface, and the protective case axial part, which is formed with, steps down to the sealing ring protrusion
Protective case through-hole, the sealing ring protrusion pass through protective case through-hole axially external to extend to the protective case axial part.
9. electric pushrod push pipe seal protection structure according to claim 8, it is characterised in that the sealing ring protrusion is outer
Diameter continuously decreases from the inside to the outside.
10. electric pushrod push pipe seal protection structure according to claim 1, it is characterised in that the protective case axial part
It is formed with the angle of protective case circumferential portion and allows bit space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810925330.XA CN108757872B (en) | 2018-08-14 | 2018-08-14 | Sealing protection structure for push rod and push pipe of electric push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810925330.XA CN108757872B (en) | 2018-08-14 | 2018-08-14 | Sealing protection structure for push rod and push pipe of electric push rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108757872A true CN108757872A (en) | 2018-11-06 |
| CN108757872B CN108757872B (en) | 2023-09-22 |
Family
ID=63969966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810925330.XA Active CN108757872B (en) | 2018-08-14 | 2018-08-14 | Sealing protection structure for push rod and push pipe of electric push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757872B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1248323A (en) * | 1969-11-14 | 1971-09-29 | Trist Mouldings & Seals Ltd | Improvements in rotary shaft seals |
| JP3072094B1 (en) * | 1999-06-15 | 2000-07-31 | 日本ピラー工業株式会社 | Mechanical seal |
| JP2014180179A (en) * | 2013-03-15 | 2014-09-25 | Iai Corp | Actuator and moisture absorbing device |
| CN106253568A (en) * | 2016-08-25 | 2016-12-21 | 浙江联宜电机有限公司 | Electric pushrod |
| CN205911890U (en) * | 2016-08-25 | 2017-01-25 | 浙江联宜电机有限公司 | Electric putter lead screw anti -friction structure |
| CN107314090A (en) * | 2017-07-04 | 2017-11-03 | 浙江捷昌线性驱动科技股份有限公司 | It is a kind of can bidirectional self-locking electric pushrod |
| CN208651554U (en) * | 2018-08-14 | 2019-03-26 | 浙江联宜电机有限公司 | Electric pushrod push pipe seal protection structure |
-
2018
- 2018-08-14 CN CN201810925330.XA patent/CN108757872B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1248323A (en) * | 1969-11-14 | 1971-09-29 | Trist Mouldings & Seals Ltd | Improvements in rotary shaft seals |
| JP3072094B1 (en) * | 1999-06-15 | 2000-07-31 | 日本ピラー工業株式会社 | Mechanical seal |
| JP2014180179A (en) * | 2013-03-15 | 2014-09-25 | Iai Corp | Actuator and moisture absorbing device |
| CN106253568A (en) * | 2016-08-25 | 2016-12-21 | 浙江联宜电机有限公司 | Electric pushrod |
| CN205911890U (en) * | 2016-08-25 | 2017-01-25 | 浙江联宜电机有限公司 | Electric putter lead screw anti -friction structure |
| CN108365699A (en) * | 2016-08-25 | 2018-08-03 | 浙江联宜电机有限公司 | Electric pushrod |
| CN107314090A (en) * | 2017-07-04 | 2017-11-03 | 浙江捷昌线性驱动科技股份有限公司 | It is a kind of can bidirectional self-locking electric pushrod |
| CN208651554U (en) * | 2018-08-14 | 2019-03-26 | 浙江联宜电机有限公司 | Electric pushrod push pipe seal protection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108757872B (en) | 2023-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201437373U (en) | Rack bushing for vehicle steering system | |
| CN105620708A (en) | Underwater electric steering engine and rudder angle detection method | |
| CN203671141U (en) | Spiral type pipeline robot | |
| JP4148121B2 (en) | Vehicle steering system | |
| CN112096790A (en) | Internal-driving internal-meshing wear compensation plane enveloping worm transmission device | |
| CN208651554U (en) | Electric pushrod push pipe seal protection structure | |
| CN101502965A (en) | Hydraulic driving mechanical wrist part structure | |
| CN108757872A (en) | Electric pushrod push pipe seal protection structure | |
| CN210431137U (en) | Large-torque motor integrated with speed reducer and encoder | |
| CN205383253U (en) | Locking ring that pressure vessel and this pressure vessel used | |
| CN108775302A (en) | The special blade swing type hydraulic cylinder in robot motion joint | |
| CN206495966U (en) | Robot harmonic speed reducer | |
| EP3073133A1 (en) | Output shaft of cycloid hydraulic motor and shaft valve flow-distribution cycloid hydraulic motor | |
| CN112636519B (en) | Electric push rod | |
| CN108131323A (en) | Pump parking sealing arrangement and its method of work | |
| CN105351245B (en) | Roots blower mechanical sealing medium apparatus for controlling of supply | |
| CN107255142A (en) | A kind of high-mechanic compact revolving support gear-box | |
| CN205769552U (en) | The electric circulation ball steering gear of the double waterproof construction of band | |
| CN209842928U (en) | Six-shaft transmission mechanism for six-shaft parallel electric platform | |
| CN206338237U (en) | A kind of anti-dry grinding auto pump water seal | |
| CN207753554U (en) | A kind of servo electric jar system | |
| CN207195577U (en) | A kind of high-mechanic compact revolving support gear-box | |
| CN206834699U (en) | A kind of cable fixing head | |
| CN204573091U (en) | Output shaft sealing device and electric actuator | |
| CN111697739B (en) | Multi-sealing underwater traction motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |