CN209146254U - Electric pushrod screw rod anti-shifting structure - Google Patents
Electric pushrod screw rod anti-shifting structure Download PDFInfo
- Publication number
- CN209146254U CN209146254U CN201821793090.4U CN201821793090U CN209146254U CN 209146254 U CN209146254 U CN 209146254U CN 201821793090 U CN201821793090 U CN 201821793090U CN 209146254 U CN209146254 U CN 209146254U
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- CN
- China
- Prior art keywords
- screw rod
- fixed
- end cap
- locating piece
- recessing groove
- Prior art date
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Abstract
Screw rod axial float can be limited the purpose of the utility model is to provide a kind of, extends the electric pushrod screw rod anti-shifting structure of electric pushrod service life.To achieve the above object, the utility model adopts the following technical solution: a kind of electric pushrod screw rod anti-shifting structure, including screw rod, one end of screw rod is fixed by bearing and end cap, locating piece is fixed on the screw rod, the locating piece axial sides are respectively equipped with a limited block, fixed block is fixed on the end cap, the fixed block and end cap are fixed two limited blocks and locating piece to be limited between end cap axial end face and fixed block axial end face, pass through grease lubrication between the locating piece and limited block, the limited block is arranged in a ring to have the recessing groove stepped down to screw rod, there are gaps between the limited block inner circumferential wall and screw rod peripheral outer wall.
Description
Technical field
The utility model relates to electric pushrods, and in particular to a kind of electric pushrod screw rod anti-shifting structure.
Background technique
The screw rod axial float power of electric pushrod is larger, if not carrying out axial limitation, the axial float of screw rod to screw rod
The components such as bearing can be impacted, the components reduced service life such as bearing can be made.
Summary of the invention
Screw rod axial float can be limited the purpose of the utility model is to provide a kind of, extends the electricity of electric pushrod service life
Dynamic push rod screw rod anti-shifting structure.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of electric pushrod screw rod anti-shifting structure,
Including screw rod, one end of screw rod is fixed by bearing and end cap, and locating piece, the locating piece axial two are fixed on the screw rod
Side is respectively equipped with a limited block, and fixed block is fixed on the end cap, and the fixed block and end cap are fixed to limit two
Block and locating piece are limited between end cap axial end face and fixed block axial end face, pass through oil between the locating piece and limited block
Grease lubrication, the limited block are arranged in a ring to have the recessing groove stepped down to screw rod, the limited block inner circumferential wall and screw rod
There are gaps between peripheral outer wall.
Fixed block is arranged by the stationary positioned block on screw rod, in locating piece axially opposite sides in the utility model, passes through
Locating piece is limited to limit the axial movement of screw rod, to avoid damage of components such as bearings, is made with extending electric pushrod
Use the service life.Wherein, fixed block can be thrust bearing, can also be annular element made of the metals such as copper；Fixed block is adjacent with locating piece
End face is coated with oil, and the rotation of locating piece does not impact fixed block.
Preferably, the locating piece is fixed on screw rod with being arranged in a ring, the screw rod and locating piece are each formed with
Radial hole is to be used for close-fitting fixed pin.Above-mentioned setting is convenient for the fixation of locating piece, is also convenient for moving axially progress to screw rod
Limitation.
Preferably, the fixed block includes positioned at the fixation block body of end cap axial direction side, positioned at locating piece and limited block
The ring part of peripheral side, the interconnecting piece for contacting and fixing with end cap, the interconnecting piece are located relatively at fixed block body outer circumferential,
The interconnecting piece is fixed by fastening screw and end cap, if being equipped between the head of the fastening screw and the interconnecting piece of fixed block
Dry gasket.Gasket is for avoiding fixed block deformation when fastening screw is tightened.
Preferably, the end cap axial end face is formed with the first recessing groove and the second recessing groove, first recessing groove
Concentric with the second recessing groove, the first recessing groove is located at the second recessing groove axially inner side, and the second annular groove inner circumferential wall is located at first
On the outside of annular groove inner circumferential wall, so as to be formed with step structure with first annular slot, the connecting portion in the first recessing groove,
The sealing ring of annular is located in the second recessing groove, and sealing ring inner edge is located relatively on the inside of interconnecting piece circumferential direction outer rim, sealing ring outer rim
It is located relatively on the outside of interconnecting piece circumferential direction outer rim.Sealing ring is used for waterproof.
Preferably, the quantity at least two of the gasket, several gaskets are axially stacked along screw rod.Above-mentioned setting
To improve the fixed effect of fixed block and end cap.
The utility model has the advantages of capable of limiting screw rod axial float, extending electric pushrod service life.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model；
Fig. 2 is another structural schematic diagram of the utility model.
Specific embodiment
The utility model is further described below according to the drawings and specific embodiments.
As shown in Fig. 1, Fig. 2, a kind of electric pushrod screw rod anti-shifting structure of the utility model, including screw rod 1, screw rod 1
One end it is fixed by bearing 2 and end cap 3, be fixed with locating piece 4 on screw rod 1,4 axial sides of locating piece are respectively equipped with a limit
Position block 5, fixed block 6 is fixed on end cap 3, and fixed block 6 and end cap 3 are fixed two limited blocks 5 and locating piece 4 are limited in end
Between 6 axial end face of 3 axial end face of lid and fixed block, by grease lubrication between locating piece 4 and limited block 5, limited block 5 is in ring
To have the recessing groove stepped down to screw rod 1, screw rod 1 is located in recessing groove for shape setting, and 5 inner circumferential wall of limited block and screw rod 1 are circumferential
There are gaps between outer wall.Wherein, locating piece 4 is fixed on screw rod 1 with being arranged in a ring, and screw rod 1 and locating piece 4 are each formed with
Radial hole is to be used for close-fitting fixed pin 10.Wherein, the conduit of electric pushrod is weldingly fixed on fixed block.
Fixed block 6 includes positioned at the fixation block body 61 of the axial side of end cap 3, positioned at 5 peripheral side of locating piece 4 and limited block
Ring part 62, the interconnecting piece 63 for contacting and fixing with end cap 3, interconnecting piece 63 are located relatively at fixed 6 outer circumferential of block body, connect
Portion 63 is fixed by fastening screw 7 and end cap 3, sets that there are two edges between the head of fastening screw 7 and the interconnecting piece 63 of fixed block 6
The axially stacked setting gasket 8 of screw rod 1.
3 axial end face of end cap is formed with the first recessing groove and the second recessing groove, and the first recessing groove and the second recessing groove are concentric,
First recessing groove is located at the second recessing groove axially inner side, and the second annular groove inner circumferential wall is located at outside first annular slot inner circumferential wall
Side, so as to be formed with step structure with first annular slot, interconnecting piece 63 is located in the first recessing groove, and annular sealing ring 9 is located at
In second recessing groove, 9 inner edge of sealing ring is located relatively on the inside of the circumferential outer rim of interconnecting piece 63, and 9 outer rim of sealing ring is located relatively at connection
On the outside of the circumferential outer rim in portion 63.
Fixed block is arranged by the stationary positioned block on screw rod, in locating piece axially opposite sides in the utility model, passes through
Locating piece is limited to limit the axial movement of screw rod, to avoid damage of components such as bearings, is made with extending electric pushrod
Use the service life.Wherein, fixed block can be thrust bearing, can also be annular element made of the metals such as copper；Fixed block is adjacent with locating piece
End face is coated with oil, and the rotation of locating piece does not impact fixed block.
The utility model has the advantages of capable of limiting screw rod axial float, extending electric pushrod service life.
Claims (5)
1. a kind of electric pushrod screw rod anti-shifting structure, it is characterised in that including screw rod, one end of screw rod passes through bearing and end cap
It is fixed, locating piece is fixed on the screw rod, the locating piece axial sides are respectively equipped with a limited block, consolidate on the end cap
Surely there is fixed block, the fixed block and end cap are fixed two limited blocks and locating piece are limited in end cap axial end face and fixation
Between block axial end face, by grease lubrication between the locating piece and limited block, the limited block is arranged in a ring to have
To the recessing groove that screw rod is stepped down, there are gaps between the limited block inner circumferential wall and screw rod peripheral outer wall.
2. electric pushrod screw rod anti-shifting structure according to claim 1, it is characterised in that the locating piece in a ring with
It is arranged and is fixed on screw rod, the screw rod and locating piece are each formed with radial hole for close-fitting fixed pin.
3. electric pushrod screw rod anti-shifting structure according to claim 1, it is characterised in that the fixed block includes being located at
The fixation block body of end cap axial direction side, the company for contacting and fixing positioned at locating piece and the ring part of limited block peripheral side, with end cap
Socket part, the interconnecting piece are located relatively at fixed block body outer circumferential, and the interconnecting piece is fixed by fastening screw and end cap, institute
It states and is equipped with several gaskets between the head of fastening screw and the interconnecting piece of fixed block.
4. electric pushrod screw rod anti-shifting structure according to claim 3, it is characterised in that the end cap axial end face shape
At having the first recessing groove and the second recessing groove, first recessing groove and the second recessing groove are concentric, and the first recessing groove is located at second
Recessing groove axially inner side, the second annular groove inner circumferential wall is located on the outside of first annular slot inner circumferential wall, so that with first annular slot
It is formed with step structure, the connecting portion is in the first recessing groove, and annular sealing ring is located in the second recessing groove, sealing ring
Inner edge is located relatively on the inside of interconnecting piece circumferential direction outer rim, and sealing ring outer rim is located relatively on the outside of interconnecting piece circumferential direction outer rim.
5. electric pushrod screw rod anti-shifting structure according to claim 3 or 4, it is characterised in that the quantity of the gasket is extremely
It is less two, several gaskets are axially stacked along screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821793090.4U CN209146254U (en) | 2018-11-01 | 2018-11-01 | Electric pushrod screw rod anti-shifting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821793090.4U CN209146254U (en) | 2018-11-01 | 2018-11-01 | Electric pushrod screw rod anti-shifting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209146254U true CN209146254U (en) | 2019-07-23 |
Family
ID=67272049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821793090.4U Active CN209146254U (en) | 2018-11-01 | 2018-11-01 | Electric pushrod screw rod anti-shifting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209146254U (en) |
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2018
- 2018-11-01 CN CN201821793090.4U patent/CN209146254U/en active Active
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