CN206904050U - A kind of eccentric shaft - Google Patents
A kind of eccentric shaft Download PDFInfo
- Publication number
- CN206904050U CN206904050U CN201720828465.5U CN201720828465U CN206904050U CN 206904050 U CN206904050 U CN 206904050U CN 201720828465 U CN201720828465 U CN 201720828465U CN 206904050 U CN206904050 U CN 206904050U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- cam
- shaft
- linkage section
- eccentric shaft
- 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.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model provides a kind of eccentric shaft, belongs to field of mechanical technique.It solves existing eccentric shaft rapid wear and the problems such as work is not sufficiently stable.This eccentric shaft includes cam and the main shaft being in the form of a column, cam is fixed with the connecting shaft set with spindle eccentricity backwards to the end face of main shaft, there is diameter to be more than main shaft and cylindrical linkage section for the end face of cam towards main shaft, the contact edge of linkage section and cam edge is provided with fillet, main shaft is coaxially disposed and is connected with linkage section, and the root that main shaft is connected to linkage section is arranged rubber sleeve.The utility model has the advantages that stress concentration phenomenon and good operating stability can be weakened.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of eccentric shaft.
Background technology
Electric tool is broadly divided into metal cutting electric tool, grinds electric tool, assembling electric tool and railway power supply
Power driven tools.Common electric tool has electric drill, electric grinder, electric wrench, electric screw driver, electric hammer, electric impact drill, coagulation
Soil vibration device, electric planer etc..
Much it is required for using eccentric shaft in electric tool, such as electric hammer, electric impact drill and electric pick all pass through eccentric shaft band
Move a piston movement so that piston reciprocating air in cylinder, make cylinder air be in mechanical periodicity, the air of change
Press belt is taken offence the top of the hammer strike drill bit in cylinder, so as to quickly punch.
Eccentric shaft overall weight on existing electric tool is larger, and energy consumption is big, and main shaft exists with cam junction
Stress concentration phenomenon, easily impaired, the lubricant effect of eccentric shaft is not ideal enough, in addition shadow of the eccentric shaft by axial impact force
Ring, axial float easily occurs, influences job stability.
The content of the invention
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, there is provided one kind can weaken stress collection
Middle phenomenon and the eccentric shaft with cushioning effect.
The purpose of this utility model can be realized by following technical proposal：A kind of eccentric shaft, including cam and be in the form of a column
Main shaft, described cam backwards to the end face of main shaft be fixed with spindle eccentricity set connecting shaft, it is characterised in that it is described
There is diameter to be more than main shaft and cylindrical linkage section, contact of the described linkage section with cam for the end face of cam towards main shaft
Edge is provided with fillet, and described main shaft is coaxially disposed and is connected with linkage section, and described main shaft is connected to the root of linkage section
Portion is arranged rubber sleeve.
This eccentric shaft can weaken stress concentration phenomenon, linkage section is connected with main shaft by the setting of linkage section and fillet
Place is not easily damaged, and the setting of rubber sleeve serves absorbing cushioning effect, prevents main-shaft axis play, the work of this eccentric shaft is surely
It is qualitative good.
In a kind of above-mentioned eccentric shaft, steel bushing is cased with outside described rubber sleeve, described rubber sleeve is away from linkage section
End, which has, outwards to be turned down and is coated on the flange of steel bushing end.Steel bushing avoids rubber sleeve from wearing, and flange is contradicting driving cog
The end of wheel simultaneously can effectively buffer axial impact force, prevent main-shaft axis play.
In a kind of above-mentioned eccentric shaft, described main shaft offers the oil-through hole for being coaxial therewith setting and running through.Cross oil
Hole facilitates lubricating oil to circulate, and lubricating oil is to high lubricating effect at cam so that smooth, working stability is rotated at cam.
In a kind of above-mentioned eccentric shaft, lightening grooves are offered on described cam.Lightening grooves alleviate the weight of cam,
Energy consumption of the cam when rotating is reduced, also reduces vibration and noise.
In a kind of above-mentioned eccentric shaft, the quantity of described lightening grooves for three and is distributed with cam backwards to the end of main shaft
On face, the middle rectangular blind hole shape of lightening grooves and its center line and the axis of both connecting shaft, main shaft are in the same plane, separately
Outer two lightening grooves are blind round hole and are symmetrical with middle lightening grooves setting.Structure that is so easy to process and can guarantee that cam is strong
Degree, and lightening grooves are reasonably distributed, and do not interfere with the rotating effect of cam.
Compared with prior art, this eccentric shaft is in light weight, and energy consumption is low, and will not axial float, good operating stability,
Other high lubricating effect, cam rotation is smooth, working stability.
Brief description of the drawings
Fig. 1 is the main structure figure of this eccentric shaft.
Fig. 2 is the left view structure chart of this eccentric shaft.
In figure, 1, cam；2nd, main shaft；2a, oil-through hole；3rd, connecting shaft；4th, linkage section；5th, fillet；6th, rubber sleeve；6a, turn over
Side；7th, steel bushing；8th, lightening grooves.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in figure 1, this eccentric shaft includes cam 1 and the main shaft 2 being in the form of a column, cam 1 is fixed with backwards to the end face of main shaft 2
With the connecting shaft 3 of the eccentric setting of main shaft 2, there is diameter to be more than main shaft 2 and cylindrical company for the end face of cam 1 towards main shaft 2
Section 4 is connect, the contact edge edge of linkage section 4 and cam 1 is provided with fillet 5, and main shaft 2 is coaxially disposed and is connected with linkage section 4, main shaft
2 roots for being connected to linkage section 4 are arranged rubber sleeve 6.
Further describe in detail, in order to avoid rubber sleeve 6 wears and strengthened the buffering effect to axial impact force, outside rubber sleeve 6
Steel bushing 7 is cased with, end of the rubber sleeve 6 away from linkage section 4, which has, outwards to be turned down and be coated on the flange 6a of the end of steel bushing 7.In order to
High lubricating effect so that rotation is smooth at cam 1, and main shaft 2 offers the oil-through hole 2a for being coaxial therewith setting and running through.
As shown in Fig. 2 in order to mitigate weight, energy consumption is reduced, offers lightening grooves 8 on cam 1, the quantity of lightening grooves 8 is
Three and distribution with cam 1 backwards to main shaft 2 end face on, middle 8 rectangular blind hole shape of lightening grooves and its center line and connecting shaft
3rd, both axis of main shaft 2 are in the same plane, and two other lightening grooves 8 is blind round hole and is symmetrical with middle lightening grooves 8
Set.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (5)
1. a kind of eccentric shaft, including cam（1）With the main shaft being in the form of a column（2）, described cam（1）Backwards to main shaft（2）End face
It is fixed with and main shaft（2）The connecting shaft of eccentric setting（3）, it is characterised in that described cam（1）Towards main shaft（2）End face
It is more than main shaft with diameter（2）And cylindrical linkage section（4）, described linkage section（4）With cam（1）Contact edge along setting
There is fillet（5）, described main shaft（2）With linkage section（4）It is coaxially disposed and is connected, described main shaft（2）It is connected to connection
Section（4）Root be arranged rubber sleeve（6）.
A kind of 2. eccentric shaft according to claim 1, it is characterised in that described rubber sleeve（6）It is cased with steel bushing outside（7）,
Described rubber sleeve（6）Away from linkage section（4）End have outwards turn down and be coated on steel bushing（7）The flange of end（6a）.
A kind of 3. eccentric shaft according to claim 1 or 2, it is characterised in that described main shaft（2）Offer and be coaxial therewith
The oil-through hole for setting and running through（2a）.
A kind of 4. eccentric shaft according to claim 3, it is characterised in that described cam（1）On offer lightening grooves
（8）.
A kind of 5. eccentric shaft according to claim 4, it is characterised in that described lightening grooves（8）Quantity for three and
Distribution and cam（1）Backwards to main shaft（2）End face on, middle lightening grooves（8）Rectangular blind hole shape and its center line and connecting shaft
（3）, main shaft（2）Both axis are in the same plane, two other lightening grooves（8）For blind round hole and it is symmetrical with centre and subtracts
Baking soda（8）Set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828465.5U CN206904050U (en) | 2017-07-10 | 2017-07-10 | A kind of eccentric shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828465.5U CN206904050U (en) | 2017-07-10 | 2017-07-10 | A kind of eccentric shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206904050U true CN206904050U (en) | 2018-01-19 |
Family
ID=61311509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720828465.5U Expired - Fee Related CN206904050U (en) | 2017-07-10 | 2017-07-10 | A kind of eccentric shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206904050U (en) |
-
2017
- 2017-07-10 CN CN201720828465.5U patent/CN206904050U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20190710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |