CN207246250U - A kind of electric tool damping bearing nested structure - Google Patents
A kind of electric tool damping bearing nested structure Download PDFInfo
- Publication number
- CN207246250U CN207246250U CN201720983404.6U CN201720983404U CN207246250U CN 207246250 U CN207246250 U CN 207246250U CN 201720983404 U CN201720983404 U CN 201720983404U CN 207246250 U CN207246250 U CN 207246250U
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- bearing
- fixing axle
- casing
- damping
- electric tool
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Abstract
It the utility model is related to a kind of electric tool damping bearing nested structure, it is characterised in that：It includes casing, fixing axle bearing sleeve, damping bearing set, bearing and rotor, fixing axle bearing sleeve is fixed in casing, bearing is installed in damping bearing set, the cylindrical and endoporus of fixing axle bearing sleeve of the damping bearing set is interference fitted, the endoporus interference fit of the cylindrical and damping bearing set of the bearing, the rotor are located in the endoporus of bearing.Fixing axle bearing sleeve in electric tool damping bearing nested structure is a regular toroidal, and the mistake circle deformation very little of casing bearing chamber, prevents the inconsistent caused eccentric wear of contraction of casing all directions, seizes stuck phenomenon.
Description
Technical field
A kind of rotating mechanism of electric tool is the utility model is related to, more particularly to a kind of electric tool damping bearing noose
Structure.
Background technology
Bearing be it is a kind of be widely used in it is all kinds of machinery in important base components, for support load and rotate,
Swing or linear reciprocating motion.Rubber shaft bearing is one kind most commonly seen in bearing, and rubber shaft bearing is by elastomeric material heatproof itself
Property.The limitation of rub resistance and chemical mediator-resitant property, using there are different damages in the varying environment of different regions
Form, for example eccentric wear, stuck phenomenon is seized, and easy to wear, perishable, short life, the prior art are difficult to realize with relatively easy
Unified rubber process and formula design solves the problems, such as, extends the service life.
For example the Chinese patent of Application No. 201410668001.3 discloses a kind of rubber shaft bearing, including metal shaft bearing sleeve
With the rubber bushing being arranged in metal shaft bearing sleeve, it is provided with the metal shaft bearing sleeve inner wall and is radially embedded in rubber bushing
Interior anticreep raised line.Rubber shaft bearing of the present invention, its anticreep raised line set can provide circumferencial direction to rubber bushing at work
Thrust, so as to offset the frictional force for the circumferencial direction that shaft applies rubber bushing, avoid rubber bushing and metal bearing
The trend of relative motion is produced between set, reduces stiction between the two, so as to eliminate rubber liner in use
The problem of stress comes off；It is swollen in the rubber liner course of work during expanded by heating and rubber bushing is made of pintongs arc lining tile
Swollen gap can accommodate the swell increment of lining tile, so as to keep the gap value between rubber bushing and shaft, prevent rubber bushing and
Frictional force increases between shaft, abrasion aggravates.Rub although above-mentioned technical proposal reduces between rubber bushing and shaft to a certain extent
Power is wiped, but complex-shaped due to motor case, the contraction of all directions is inconsistent, and it is larger that casing bearing loses circle deformation, still
It is easy to cause the damage of bearing.
Utility model content
The purpose of this utility model is that for the different phenomenon of different tool vibrations, there is provided a kind of electric tool vibration damping
Bearing housing structure.
For the attainment of one's purpose, technical solution provided by the utility model is：
A kind of electric tool damping bearing nested structure that the utility model is related to, it is characterised in that：It includes casing, fixation
Bearing holder (housing, cover), damping bearing set, bearing and rotor, fixing axle bearing sleeve are fixed in casing, and bearing is installed in damping bearing set, institute
The cylindrical and endoporus of fixing axle bearing sleeve for the damping bearing set stated is interference fitted, the cylindrical and damping bearing set of the bearing
Endoporus is interference fitted, and the rotor is located in the endoporus of bearing.
Preferably, the fixing axle bearing sleeve and casing integrated injection molding, are coated on so as to form fixing axle bearing sleeve
The structure of casing inner wall.
The fixing axle bearing sleeve uses polyamide 66 bearing holder (housing, cover).
The damping bearing set is using polyamide 66 bearing holder (housing, cover) or uses nitrile rubber bearing holder (housing, cover).
Using technical solution provided by the utility model, compared with prior art, have the advantages that：
The electric tool damping bearing nested structure that the utility model is related to, which uses, is molded fixing axle bearing sleeve in casing, solve machine
Circle deformation is lost seriously in shell upper bearing (metal) room, because cabinet is complex-shaped, the contraction of all directions is inconsistent, so being molded
During casing, the fixing axle bearing sleeve of prior injection formed, fixing axle bearing sleeve is that a wholecircle shape each side is shunk all than more uniform, this
The casing bearing that technique productions come out loses circle deformation very little.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model electric tool damping bearing nested structure.
Illustrate：1 fixing axle bearing sleeve, 2 damping bearing sets, 3 casings, 4 bearings, 5 rotors.
Embodiment
To further appreciate that the content of the utility model, the utility model is described in detail in conjunction with the embodiments, it is real below
Apply example to be used to illustrate the utility model, but be not intended to limit the scope of the present invention.
Embodiment 1
With reference to shown in attached drawing 1, the electric tool bearing holder (housing, cover) vibration-proof structure that the present embodiment is related to is made of 5 parts, including
Fixing axle bearing sleeve 1, damping bearing set 2, casing 3, bearing 4 and rotor 5.The fixing axle bearing sleeve 1 and 3 integrated injection molding of casing into
Type, so as to form the structure that fixing axle bearing sleeve 1 is coated on 3 inner wall of casing.Fixing axle bearing sleeve 1 uses PA66 bearing holder (housing, cover)s, mainly
In order to solve the problems, such as that mistake circle deformation in 3 upper bearing (metal) room of casing is serious, because casing is complex-shaped, the contraction of all directions differs
Cause.In production process, the fixing axle bearing sleeve 1 of prior injection formed, then installs mould, then injection molding machine in the outside of fixing axle bearing sleeve 1
Shell, fixing axle bearing sleeve 1 are toroidal, and each side is shunk all than more uniform, and the casing bearing chamber that this technique productions come out loses
Circle deformation very little.After the reliable and stable casing of bearing chamber is obtained, effective damping is formed using the damping bearing set 2 of assembling
Structure, damping bearing set 2 use PA66 bearing holder (housing, cover)s, and the cylindrical slight interference of its endoporus and bearing 4 coordinates, cylindrical and fixing axle bearing sleeve
1 endoporus slight interference coordinates, and rotor 5 is located in the endoporus of bearing 4, forms final electric tool bearing holder (housing, cover) vibration-proof structure.
Embodiment 2
With reference to shown in attached drawing 1, the electric tool bearing holder (housing, cover) vibration-proof structure that the present embodiment is related to is made of 5 parts, including
Fixing axle bearing sleeve 1, damping bearing set 2, casing 3, bearing 4 and rotor 5.The fixing axle bearing sleeve 1 and 3 integrated injection molding of casing into
Type, so as to form the structure that fixing axle bearing sleeve 1 is coated on 3 inner wall of casing.Fixing axle bearing sleeve 1 uses PA66 bearing holder (housing, cover)s, mainly
In order to solve the problems, such as that mistake circle deformation in 3 upper bearing (metal) room of casing is serious, because casing is complex-shaped, the contraction of all directions differs
Cause.In production process, the fixing axle bearing sleeve 1 of prior injection formed, then installs mould, then injection molding machine in the outside of fixing axle bearing sleeve 1
Shell, fixing axle bearing sleeve 1 are toroidal, and each side is shunk all than more uniform, and the casing bearing chamber that this technique productions come out loses
Circle deformation very little.After the reliable and stable casing of bearing chamber is obtained, effective damping is formed using the damping bearing set 2 of assembling
Structure, damping bearing set 2 use nitrile rubber bearing holder (housing, cover), and the cylindrical slight interference of its endoporus and bearing 4 coordinates, cylindrical and fixing axle
The endoporus slight interference of bearing sleeve 1 coordinates, and rotor 5 is located in the endoporus of bearing 4, forms final electric tool bearing holder (housing, cover) vibration damping knot
Structure.
The utility model is described in detail above in association with embodiment, but the content be only the utility model compared with
Good embodiment, it is impossible to be construed as limiting the scope of the utility model.It is made according to the scope of application of this utility model
All the changes and improvements etc., should all still fall within the patent covering scope of the utility model.
Claims (2)
- A kind of 1. electric tool damping bearing nested structure, it is characterised in that：It include casing, fixing axle bearing sleeve, damping bearing set, Bearing and rotor, fixing axle bearing sleeve are fixed in casing, and bearing is installed in damping bearing set, outside damping bearing set The endoporus of circle and fixing axle bearing sleeve is interference fitted, the endoporus interference fit of the cylindrical and damping bearing set of the bearing, described Rotor be located in the endoporus of bearing.
- 2. electric tool damping bearing nested structure according to claim 1, it is characterised in that：The fixing axle bearing sleeve with Casing integrated injection molding, so as to form the structure that fixing axle bearing sleeve is coated on casing inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720983404.6U CN207246250U (en) | 2017-08-08 | 2017-08-08 | A kind of electric tool damping bearing nested structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720983404.6U CN207246250U (en) | 2017-08-08 | 2017-08-08 | A kind of electric tool damping bearing nested structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207246250U true CN207246250U (en) | 2018-04-17 |
Family
ID=61879188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720983404.6U Active CN207246250U (en) | 2017-08-08 | 2017-08-08 | A kind of electric tool damping bearing nested structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207246250U (en) |
-
2017
- 2017-08-08 CN CN201720983404.6U patent/CN207246250U/en active Active
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