CN205937455U - Large length and radius ratio high -precision bearing and water pump rotor - Google Patents
Large length and radius ratio high -precision bearing and water pump rotor Download PDFInfo
- Publication number
- CN205937455U CN205937455U CN201620999487.3U CN201620999487U CN205937455U CN 205937455 U CN205937455 U CN 205937455U CN 201620999487 U CN201620999487 U CN 201620999487U CN 205937455 U CN205937455 U CN 205937455U
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- friction portion
- big
- ratio high
- precision bearing
- bearing
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- Rotary Pumps (AREA)
Abstract
The utility model discloses a large length and radius ratio high -precision bearing and water pump rotor. Water pump rotor includes rotor body (1), large length and radius ratio high -precision bearing, large length and radius ratio high -precision bearing includes first friction portion (2), second friction portion (3), structural connection portion (4), first friction portion (2) establishes first shaft hole (22) in the center, second friction portion (3) establishes second shaft hole (33) in the center, first friction portion (2), second friction portion (3) passes through interference fit with the both ends of structural connection portion (4) and is connected fixed as an organic wholely, make the final shaping in first shaft hole (22) and second shaft hole (33) and coaxial through the internal grinding precision finishing, first friction portion (2) internal diameter size is d1, second friction portion (3) internal diameter size is d2, structural connection portion (4) internal diameter size is d3, D1=d2 < d3, after the large length and radius ratio high -precision bearing shaping, rotor body (1) is through injection moulding peripheral an organic whole that forms in large length and radius ratio high -precision bearing, water pump rotor slides through first shaft hole (22) and second shaft hole (33) and pivot adaptation.
Description
Technical field
The utility model is related to a kind of big L/D ratio high-precision bearing；In addition, the utility model further relates to a kind of water pump turning
Son.
Background technology
Bearing is the conventional machine components in order to bearing journal or axle upper rotary part, and the operation principle according to bearing can be divided
For rolling friction bearing be rolling bearing and sliding friction bearing is sliding bearing.Rolling bearing is mainly ball bearing, ball
Bearing is general purpose accessory, and advantage is life-span length, but inferior position to be noise relatively large, bearing is less simultaneously, and difficulty of processing is bigger, cost
Higher.Sliding bearing is widely used in micro machine field, the commonly used powder metallurgical technique manufacture of this bearing, and advantage is cost
Low, high precision, inferior position is that the life-span is relatively short.Have also appeared the engineering plastics axle manufacturing using self-lubricating material in the market
Hold, it is typically sold separately as lining components, be used for the axle sleeve application of low speed, heavy duty, engineering plastic bearing has a lot
Advantage, such as assembles simple, can meet various harsh environments, metal is low with plastic friction sound or even quiet, bears the external world
The ability of pollution such as dust pollution is strong.
The draw ratio of bush(ing) bearing is length is generally rational with the ratio of diameter within 3, long
Footpath than the bearing more than 10 due to the reason such as restriction of production technology cause to realize difficult, the utility model draw ratio is more than or
It is defined as " big L/D ratio bearing " equal to 5 bearings.If the rotor of the micro pump for occasions such as aquariums is due to the limit of structure
System, not only bearing wall is thin, and interior hole length is long simultaneously, therefore it is required that using the bush(ing) bearing compared with big L/D ratio.Existing this
Class bearing is made using graphite or pottery.There is following defect in graphite bearing：Bearing can not make thin-wall construction；Injection mo(u)lding or
After being pressed into rotor, its internal diameter easily shrinks；Abrasion is big；It is also easy to produce black wear particle, pollute water.Ceramic bearing exists
Following defect：The difficult processing of endoporus；Because pottery does not possess self lubricity, therefore it is unable to dry friction；Material is crisp, fragile；Major diameter
More difficult realization than the bearing more than 3.
It is illustrated in figure 1 a kind of section structure schematic diagram of existing rotor, it is a kind of rotor of micro pump, this turn
Son and bearing mounting means are that respectively one bearing 20,30 of press-in or one end injection, one end are pressed into an axle at the two ends of rotor 10
Hold, the shortcoming of this rotor is that there are two bearing Concentricity tolerance problems, and axiality is difficult to ensure that, simultaneously because considering with one heart
Degree, the tolerance of bearing is big, big with axle fit clearance, and in addition injection moulding process middle (center) bearing can be right because injection pressure and deformation retract
The operation of rotor produces harmful effect, and precision not, is also easy to produce the problems such as shake, noise, premature failure.In addition, it is existing same
Class rotor also has by the way of ceramic bearing or graphite bearing are moulded in the middle part of rotor, inherently scarce due to this class bearing aforementioned
Fall into, its limited length, it is stable in two-end part that bearing is not so good as bearing in the axial middle part of rotor, and the rubbing of bearing
Wiping face it is difficult to ensure the running accuracy of rotor, is also easy to produce the problems such as shake, noise greatly.
Utility model content
Technical problem to be solved in the utility model is to overcome the shortcomings of in prior art, provide a kind of lubricity good,
Axiality is good, long-life big L/D ratio high-precision bearing.
In addition, the utility model also provides a kind of water pump rotor including this big L/D ratio high-precision bearing.
Big L/D ratio high-precision bearing of the present utility model be employed technical scheme comprise that：Big L/D ratio of the present utility model
High-precision bearing includes the first friction portion positioned at two ends, the second friction portion, positioned at middle part and by described first friction portion and institute
State the structural connection that the second friction portion couples together, the center in described first friction portion is provided with the first axis hole, and described second rubs
The center in wiping portion is provided with the second axis hole, and described first friction portion, described second friction portion and the two ends of described structural connection are divided
It is not connected by interference fit and is integrally formed, described first axis hole and described second axle are made by internal grinding Precision Machining
Hole final molding simultaneously ensures that the two is coaxial, and the internal diameter size in described first friction portion is d1, the internal diameter chi in described second friction portion
Very little for d2, the internal diameter size of described structural connection is d3, d1=d2 ＜ d3.
Described first friction portion and described second friction portion are made using modified abrasion resistant high molecular polymer.
Described structural connection is made using metal or engineering plastics.
Draw ratio >=5 of described big L/D ratio high-precision bearing.
Described first friction portion and the internal diameter concentricity≤0.005mm in described second friction portion.
Internal diameter size tolerance≤the 0.01mm of described big L/D ratio high-precision bearing.
Water pump rotor of the present utility model be employed technical scheme comprise that：Water pump rotor of the present utility model includes rotor originally
Body, and big L/D ratio high-precision bearing, described big L/D ratio high-precision bearing include the first friction portion positioned at two ends, second
Friction portion, the structural connection coupling together with described second friction portion positioned at middle part and by described first friction portion, described
The center in one friction portion is provided with the first axis hole, and the center in described second friction portion is provided with the second axis hole, described first friction portion, institute
The two ends stating the second friction portion and described structural connection are connected by interference fit respectively and are integrally formed, and are ground by inner circle
Cutting Precision Machining makes described first axis hole and described second axis hole final molding and ensures that the two is coaxial, described first friction portion
Internal diameter size is d1, and the internal diameter size in described second friction portion is d2, and the internal diameter size of described structural connection is d3, d1=d2
＜ d3, after described big L/D ratio high-precision bearing machine-shaping, described rotor body is by being molded in described high accuracy axle
The periphery held forms one, and described water pump rotor is adapted slip even by described first axis hole and described second axis hole with rotating shaft
Connect.
Described first friction portion and described second friction portion are made using modified abrasion resistant high molecular polymer.
Described structural connection is made using metal or engineering plastics.
Draw ratio >=5 of described big L/D ratio high-precision bearing.
Described first friction portion and the internal diameter concentricity≤0.005mm in described second friction portion.
Internal diameter size tolerance≤the 0.01mm of described big L/D ratio high-precision bearing.
The beneficial effects of the utility model are：Because water pump rotor of the present utility model includes rotor body, and greatly enhance
Than high-precision bearing, described big L/D ratio high-precision bearing includes the first friction portion positioned at two ends, the second friction portion, is located in footpath
Middle part the structural connection coupling together described first friction portion with described second friction portion, in described first friction portion
The heart is provided with the first axis hole, and the center in described second friction portion is provided with the second axis hole, described first friction portion, described second friction portion
It is connected by interference fit respectively with the two ends of described structural connection and is integrally formed, made by internal grinding Precision Machining
Described first axis hole and described second axis hole final molding simultaneously ensure that the two is coaxial, and the internal diameter size in described first friction portion is
D1, the internal diameter size in described second friction portion is d2, and the internal diameter size of described structural connection is d3, d1=d2 ＜ d3, described
After big L/D ratio high-precision bearing machine-shaping, described rotor body is by being molded in described big L/D ratio high-precision bearing
Periphery formed one, described water pump rotor pass through described first axis hole and described second axis hole be adapted with rotating shaft slide company
Connect；Described big L/D ratio high-precision bearing of the present utility model is in segmented vertically, and its two ends is rubbing surface, and middle part is kept away
Sky, therefore frictional force are less, are conducive to mitigating the abrasion of bearing, for the situation being in operation in liquid, such as water pump or oil
When in pump, liquid can enter the empty avoiding space between the described structural connection inwall at middle part and axle, not only act as lubrication and make
With operating temperature can also be reduced, it is to avoid the deformation bringing of expanding with heat and contract with cold by liquid thermal conductivity so that the cooling of bearing is good；
Described big L/D ratio high-precision bearing can be made into arbitrary length, and its draw ratio even can be more than 20, solves existing big major diameter
A manufacture difficult problem than bearing；Described structural connection is as the structural support ensureing bearing overall construction intensity and planform
Part, the drawbacks of effectively prevent the deformation retract that in described rotor body injection moulding process, injection pressure brings, ensure that described
First axis hole and the precision of described second axis hole；In addition, described big L/D ratio high-precision bearing processing and manufacturing of the present utility model
Uncomplicated it is easy to ensure precision, it is to avoid the excessive swing abrasion bringing of tolerance and bearing premature failure and the lost of life, can
It is widely used in the motor such as place such as pump motor, automobile fuel pump motor requiring under long-life various environment, therefore this practicality is new
The described big L/D ratio high-precision bearing lubricity of type is good, axiality is good, the long-life, and water pump rotor of the present utility model equally has
There is above-mentioned advantage.
Brief description
Fig. 1 is a kind of section structure schematic diagram of existing water pump rotor；
Fig. 2 is the section structure schematic diagram of the water pump rotor of the utility model embodiment；
Fig. 3 is the section structure schematic diagram of the big L/D ratio high-precision bearing of the utility model embodiment.
Specific embodiment
As shown in Figure 2 and Figure 3, the water pump rotor of the present embodiment includes rotor body 1, big L/D ratio high-precision bearing；Its
In, described big L/D ratio high-precision bearing includes the first friction portion 2 positioned at two ends, the second friction portion 3, positioned at middle part and by institute
State the structural connection 4 that the first friction portion 2 is coupled together with described second friction portion 3, the center in described first friction portion 2 is provided with
First axis hole 22, the center in described second friction portion 3 is provided with the second axis hole 33, described first friction portion 2, described second friction portion
3 are connected by interference fit respectively with the two ends of described structural connection 4 is integrally formed, and in the present embodiment, its junction is in
Stepped, described first axis hole 22 and described second axis hole 33 final molding are made by internal grinding Precision Machining and ensures the two
Coaxially, the internal diameter size in described first friction portion 2 is d1, and the internal diameter size in described second friction portion 3 is d2, and described structure connects
The internal diameter size in portion 4 is d3, d1=d2 ＜ d3, that is, the internal diameter size being located at the described structural connection 4 in stage casing is bigger, its ratio two
The part that the internal diameter in the described first friction portion 2 at end and described second friction portion 3 has more defines circular cylindrical groove 6, therefore institute
Stating big L/D ratio high-precision bearing is in segmented vertically, and its two ends is rubbing surface, middle part empty avoiding, and rubbing surface is little, therefore
Frictional force is less, is conducive to mitigating the abrasion of bearing, for the situation being in operation in liquid, such as when in water pump or oil pump,
Liquid can enter in described circular cylindrical groove 6, not only act as lubrication, can also be by liquid thermal conductivity so that bearing
Cooling is good, reduces operating temperature, it is to avoid the deformation bringing of expanding with heat and contract with cold；In the present embodiment, described big L/D ratio high accuracy axle
The outer wall holding is cylindrical, i.e. described first friction portion 2, described second friction portion 3, the outside dimension of described structural connection 4
Unanimously, certainly, the configuration design of described big L/D ratio high-precision bearing is flexibly it is also possible to its other shapes, such as column shape, drum
Shape, the planform such as stepped, and other possible complicated shapes；After described big L/D ratio high-precision bearing machine-shaping,
Described rotor body 1 forms one, described water pump rotor by the periphery being molded in described big L/D ratio high-precision bearing
It is adapted with rotating shaft and is slidably connected by described first axis hole 22 and described second axis hole 33；Described first friction portion 2 and described
Second friction portion 3 is made using modified abrasion resistant high molecular polymer；Described structural connection 4 adopts metal or engineering plastics system
Become, in the present embodiment, described structural connection 4 is made using stainless steel, and described rotor body 1 is made using engineering plastics；This
In embodiment, the length of described big L/D ratio high-precision bearing is identical with the length of described rotor body 1, meets bearing concentricity
Problem, solve rotor operation in shake, noise, quick abrasion the problems such as；The draw ratio of described big L/D ratio high-precision bearing >=
5, its draw ratio of big L/D ratio high-precision bearing of the present utility model can be more than 20, solves the manufacture of existing big L/D ratio bearing
A difficult problem；The precision of big L/D ratio high-precision bearing of the present utility model can reach following parameter：Described first friction portion 2 and institute
State the internal diameter concentricity≤0.005mm in the second friction portion 3, the internal diameter size tolerance of described big L/D ratio high-precision bearing≤
0.01mm, its high precision, operation stability is excellent, long service life.
The manufacture method of the big L/D ratio high-precision bearing of the present embodiment comprises the following steps：(A) respectively prefabricated described the
One friction portion 2, described second friction portion 3, described structural connection 4；(B) by described first friction portion 2, described second friction portion
3 are connected by interference fit respectively with the two ends of described structural connection 4 is integrally formed；(C) accurate by internal grinding
Processing makes described first axis hole 22 and described second axis hole 33 final molding and ensures that the two is coaxial.
The manufacture method of the water pump rotor of the present embodiment comprises the following steps：(A) respectively prefabricated described first friction portion 2,
Described second friction portion 3, described structural connection 4；(B) by described first friction portion 2, described second friction portion 3 and described knot
The two ends of structure connecting portion 4 are connected by interference fit respectively and are integrally formed；(C) made by internal grinding Precision Machining described
First axis hole 22 and described second axis hole 33 final molding simultaneously ensure that the two is coaxial；(D) described rotor body 1 is made to become by injection
Type forms one in the periphery of described big L/D ratio high-precision bearing.
Big L/D ratio high-precision bearing of the present utility model, solves axiality and the bearing deformation two of prior art simultaneously
Problem, the yield rate of prior art is about 85～90%, and adopts the technical solution of the utility model, and yield rate can reach
More than 99%.
Described big L/D ratio high-precision bearing of the present utility model is in segmented vertically, and its two ends is rubbing surface, middle
Position empty avoiding, therefore frictional force are less, are conducive to mitigating the abrasion of bearing, for the situation being in operation in liquid, such as water
When in pump or oil pump, liquid can enter the empty avoiding space between the described structural connection inwall at middle part and axle, not only acts as
Lubrication, can also reduce operating temperature, it is to avoid expand with heat and contract with cold and bring by liquid thermal conductivity so that the cooling of bearing is good
Deformation；Described big L/D ratio high-precision bearing can be made into arbitrary length, and its draw ratio even can be more than 20, solves existing
A manufacture difficult problem for big L/D ratio bearing；Described structural connection 4 is as the knot ensureing bearing overall construction intensity and planform
Structure support member, the drawbacks of effectively prevent the deformation retract that in described rotor body 1 injection moulding process, injection pressure brings, Neng Goubao
Demonstrate,prove described first axis hole 22 and the precision of described second axis hole 33；Described big L/D ratio high-precision bearing of the present utility model can do
Go out thin-wall construction, and be suitable for injection, solve the problems, such as big L/D ratio；In addition, big L/D ratio high accuracy axle of the present utility model
Hold processing and manufacturing uncomplicated it is easy to ensure precision, it is to avoid the tolerance excessive swing abrasion bringing and bearing premature failure and
The lost of life, can be widely used for requiring the motor such as place such as pump motor, automobile fuel pump motor under long-life various environment,
Big L/D ratio high-precision bearing lubricity therefore of the present utility model is good, axiality is good, the long-life, and water pump of the present utility model turns
Son equally has above-mentioned advantage.
The utility model can be widely applied to bearing and rotor field.
Claims (7)
1. a kind of big L/D ratio high-precision bearing it is characterised in that：Including positioned at two ends the first friction portion (2), second friction
Portion (3), the structural connection coupling together positioned at middle part and by described first friction portion (2) and described second friction portion (3)
(4), the center in described first friction portion (2) is provided with the first axis hole (22), and the center in described second friction portion (3) is provided with the second axle
Hole (33), described first friction portion (2), described second friction portion (3) and the two ends of described structural connection (4) were passed through respectively
Being full of is fixedly connected is integrally formed, and makes described first axis hole (22) and described second axis hole by internal grinding Precision Machining
(33) final molding ensure that the two is coaxial, the internal diameter size in described first friction portion (2) is d1, described second friction portion (3)
Internal diameter size be d2, the internal diameter size of described structural connection (4) is d3, d1=d2 ＜ d3.
2. big L/D ratio high-precision bearing according to claim 1 it is characterised in that：Described first friction portion (2) and institute
The second friction portion (3) that states is made using modified abrasion resistant high molecular polymer.
3. big L/D ratio high-precision bearing according to claim 1 it is characterised in that：Described structural connection (4) adopts
Metal or engineering plastics are made.
4. big L/D ratio high-precision bearing according to claim 1 it is characterised in that：Described big L/D ratio high-precision bearing
Draw ratio >=5.
5. big L/D ratio high-precision bearing according to claim 1 it is characterised in that：Described first friction portion (2) and institute
State the internal diameter concentricity≤0.005mm in the second friction portion (3).
6. big L/D ratio high-precision bearing according to claim 1 it is characterised in that：Described big L/D ratio high-precision bearing
Internal diameter size tolerance≤0.01mm.
7. a kind of water pump rotor it is characterised in that：Including rotor body (1), and described in claim 1 to 6 any one
Big L/D ratio high-precision bearing, after described big L/D ratio high-precision bearing machine-shaping, described rotor body (1) passes through to be molded into
Type forms one in the periphery of described big L/D ratio high-precision bearing, and described water pump rotor passes through described first axis hole (22) and institute
State the second axis hole (33) and be adapted with rotating shaft and be slidably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620999487.3U CN205937455U (en) | 2016-08-30 | 2016-08-30 | Large length and radius ratio high -precision bearing and water pump rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620999487.3U CN205937455U (en) | 2016-08-30 | 2016-08-30 | Large length and radius ratio high -precision bearing and water pump rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205937455U true CN205937455U (en) | 2017-02-08 |
Family
ID=57955100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620999487.3U Withdrawn - After Issue CN205937455U (en) | 2016-08-30 | 2016-08-30 | Large length and radius ratio high -precision bearing and water pump rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205937455U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194988A (en) * | 2016-08-30 | 2016-12-07 | 张攻坚 | Big L/D ratio high-precision bearing and manufacture method and water pump rotor and manufacture method |
| CN107725582A (en) * | 2017-11-16 | 2018-02-23 | 北京海月星科技有限公司 | Water lubriucated bearing and transmission device |
| CN107917087A (en) * | 2017-12-14 | 2018-04-17 | 宁波利佳青石电气科技有限公司 | A kind of supercharging device for water cleaning systems |
-
2016
- 2016-08-30 CN CN201620999487.3U patent/CN205937455U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194988A (en) * | 2016-08-30 | 2016-12-07 | 张攻坚 | Big L/D ratio high-precision bearing and manufacture method and water pump rotor and manufacture method |
| CN106194988B (en) * | 2016-08-30 | 2018-09-28 | 珠海市静润科技有限公司 | Big L/D ratio high-precision bearing and manufacturing method and water pump rotor and manufacturing method |
| CN107725582A (en) * | 2017-11-16 | 2018-02-23 | 北京海月星科技有限公司 | Water lubriucated bearing and transmission device |
| CN107917087A (en) * | 2017-12-14 | 2018-04-17 | 宁波利佳青石电气科技有限公司 | A kind of supercharging device for water cleaning systems |
| CN107917087B (en) * | 2017-12-14 | 2023-09-22 | 宁波利佳青石电气科技有限公司 | Supercharging device for water purification system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170301 Address after: 519000 Guangdong city of Zhuhai Province town Harbour Road Technology Road No. 10 building fourth layer 405B Patentee after: Zhuhai run Bearing Technology Co., Ltd. Address before: Xiangzhou District of Guangdong city in Zhuhai Province before 519000 Cuiwei Hill Road No. 8 Garden 8 Building 3 unit 203 Patentee before: Zhang Gongjian |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 519000, fourth level 405B, 10 main building, science and technology road, Tangjia Bay Town, Zhuhai, Guangdong. Patentee after: Zhuhai static run Technology Co., Ltd. Address before: 519000, fourth level 405B, 10 main building, science and technology road, Tangjia Bay Town, Zhuhai, Guangdong. Patentee before: Zhuhai run Bearing Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20180928 |