CN201359012Y - Siamesed assembling angular contact bearing - Google Patents

Siamesed assembling angular contact bearing Download PDF

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Publication number
CN201359012Y
CN201359012Y CNU2008203039056U CN200820303905U CN201359012Y CN 201359012 Y CN201359012 Y CN 201359012Y CN U2008203039056 U CNU2008203039056 U CN U2008203039056U CN 200820303905 U CN200820303905 U CN 200820303905U CN 201359012 Y CN201359012 Y CN 201359012Y
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CN
China
Prior art keywords
rotating shaft
bearing
bearings
connection contact
spring
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
Application number
CNU2008203039056U
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Chinese (zh)
Inventor
郑子勋
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ZHEJIANG UTE BEARING CO Ltd
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Individual
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Publication date
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Priority to CNU2008203039056U priority Critical patent/CN201359012Y/en
Application granted granted Critical
Publication of CN201359012Y publication Critical patent/CN201359012Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a siamesed assembling angular contact bearing, which solves the problems of the prior siamesed assembling angular contact bearing that the installation is inconvenient, and the work stability is poor because of the limitation of the structure, and the reading error of a micro high-speed instrument is large. The siamesed assembling angular contact bearing comprises a rotating shaft and two angular contact bearings which are arranged on the rotating shaft in parallel, and a space is arranged between the two bearings in the axial direction of the rotating shaft, and the periphery of the rotating shaft between the two bearings is provided with a spacing piece which is used for restricting the axial jumping of the bearings, and the rotating shaft is provided with a positioning piece which is used for positioning the bearings in the axial direction, and the utility model is characterized in that the spacing piece is of a spring, and both end parts of the spring act on the inner side surface of the outer circle of the two bearings.

Description

Disjunctor group diametrical connection contact bearing
Technical field
The utility model relates to a kind of angular contact bearing, relates in particular to a kind of disjunctor group diametrical connection contact bearing that is used on the miniature high-speed instrument motor.
Background technique
On the miniature high-speed instrument motor, generally all need to be provided with bearing, transmission in order to rotating shaft power, disjunctor group diametrical connection contact bearing is exactly the transmission part of using morely on the miniature high-speed instrument motor, and the accuracy of the reading that produces is to be associated with the working stability of each relevant transmission part in the miniature high-speed instrumentation process.The structure of existing disjunctor group diametrical connection contact bearing comprises rotating shaft and is installed on two angular contact bearings in the rotating shaft side by side, two bearings are socketed in the rotating shaft respectively, have certain clearance between them, and by locating piece they are axially fixed in the rotating shaft respectively.Wrapping angle positioned opposite in two bearings between steel ball and the Internal and external cycle, in order to make two bearings relative play can not take place in the course of the work, guarantee the stability and the accuracy of transmission of power, between two bearings, be provided with some in the periphery of rotating shaft and have certain thickness spacer block, to limit the axial fortune fortune of bearing.The disjunctor group diametrical connection contact bearing of this structure has certain defective, at first, and troublesome poeration when spacer block is set; Secondly,, make spacer block can separate two bearings just, certain degree of difficulty is still arranged though can make various thickness specification to spacer block.And, make the spacer block of different thick specifications, increased the production difficulty of spacer block on the one hand, the circulation to spacer block on the also inconvenient on the other hand production line manages.Utilize spacer block to remove to separate two bearings, both may make between spacer block and the bearing and leave the gap, may make spacer block limit too tight again bearing.Unstability when both of these case all can cause bearing working, to impacting in working life of bearing, and part is more, and the cumulative error in assembling and the production process is big, thereby causes the reading error that produces on the instrument also bigger.
Summary of the invention
For overcoming the above-mentioned defective that existing disjunctor group diametrical connection contact bearing is had, the technical problem that the utility model need solve is: a kind of novel disjunctor group diametrical connection contact bearing is provided, it is convenient to assembling, good operating stability, can be guaranteed the working life of bearing, and the precision height of product.
Another technical problem that the utility model need solve is: provide a kind of production to assemble disjunctor group diametrical connection contact bearing more easily.
Another technical problem that the utility model need solve is: provide a kind of working stability higher disjunctor group diametrical connection contact bearing.
For solving the problems of the technologies described above, the technical solution of the utility model: a kind of disjunctor group diametrical connection contact bearing, comprise rotating shaft and be located at two angular contact bearings in the rotating shaft side by side, two bearings along rotating shaft axially between have at interval, periphery in rotating shaft is provided with the part that separates that is used to limit the bearing axial float between two bearings, rotating shaft is provided with the locating piece that is used for bearing is carried out axially locating, it is characterized in that, the described part that separates is a spring, and the two end part of spring act on respectively on the inner side surface of two bearing outer rings.Two bearings are limited in the rotating shaft under the qualification of axially locating part.The wrapping angle positioned opposite of the steel ball of described two bearings and bear inner ring grooved railway, spring is used to intercept the play of two bearing generation opposite directions, make the play that keeps two outer ring generation opposite directions in the gap, particularly bearing between two bearings forever, in order to bearing work stability.The initial length of spring should be greater than the axially spaced-apart between two bearings, and spring can provide lasting elastic force for two bearings.
As preferably, described spring is become by the spring steel bar helically coiling, and the truncation surface of spring steel bar is rectangular.The truncation surface of spring steel bar of making spring is rectangular, has improved the antifatigue degree of spring.
As preferably, described spring steel bar along the axial width of rotating shaft greater than it along rotating shaft thickness radially.Like this, further improved the antifatigue degree of spring, guaranteed that the work of bearing has good stable.
As preferably, the external diameter of described spring equals the external diameter of bearing outer ring.Both external diameter unanimities by the envelope of other parts, make the outer ring of two bearings and the radial position between the spring fix, and the two end part of spring very stably roof pressure have guaranteed the stability of bearing working on the inner side surface of two bearing outer rings.
Convenience for the production assembling that further improves this disjunctor group diametrical connection contact bearing, in described two bearings, inner ring on one of them bearing A is formed in the rotating shaft, the raceway groove of this inner ring is formed on the outer circumferential face of rotating shaft, inner ring on another bearing B is socketed in the rotating shaft, and described locating piece is located at the outside of bearing B.The raceway groove of bearing A inner ring is formed directly in the rotating shaft, the outer ring of bearing A directly is socketed in the periphery of rotating shaft, also improved simultaneously the ease of processing of bearing, and, in rotating shaft, also do not needed to be provided for limiting the locating piece of bearing A axial position because bearing A is an angular contact bearing.And amount of parts reduces, and has reduced the cumulative error of product in production and assembly process.
As preferably, described rotating shaft is provided with the platform diametric plane that directly makes progress along it, and interior edge face and this step surface of bearing B inner ring fit.By the dual qualification of locating piece and this diametric plane, make the axial position of bearing B in rotating shaft fix.
As preferably, described locating piece is a nut, and this nut thread is connected in the rotating shaft.By being threaded of nut and rotating shaft, simple in structure, and also can finely tune the axially spaced-apart between two bearings by the rotation of nut.
In order further to improve the working stability of this disjunctor group diametrical connection contact bearing, the end near described nut in the described rotating shaft is provided with opening, and it radially is provided with the locking mouth in the nut upper edge.In the end of rotating shaft a jig can be set, this jig can be connected on described opening and the locking mouth simultaneously, make rotating shaft when rotating, nut can be because of not relatively rotating between action of centrifugal force and the rotating shaft, thereby just guaranteed that also axially spaced-apart can not change between two bearings, the stability when having improved the work of this disjunctor group diametrical connection contact bearing.
Therefore, the beneficial effects of the utility model:
Because the periphery in rotating shaft acts on two springs on the bearing outer ring inner side surface in being provided with two ends between two bearings, when this disjunctor group is assembled bearing, the spring that meets the elastic force requirement directly is socketed in the periphery of rotating shaft, and the two ends roof pressure that makes spring assembles very convenient on the inner side surface of two bearing outer rings.With respect to utilizing spacer block that two bearings are separated, the assembling speed of this disjunctor group diametrical connection contact bearing is fast.Select by length and intensity spring, spring can provide lasting elastic force for the outer ring of two bearings, make the outer ring of bearing can remain on well on separately the inner ring, spring neither can make the outer ring of two bearings that significantly axial float takes place, simultaneously by qualification to spring force, can not make that the outer ring in two bearings is subjected to bigger axial pressure yet, guarantee the stability when this disjunctor group is to bearing working.Because of this disjunctor group to the bearing working good stability, can carry out transmission of power exactly, be beneficial to and reduce the reading error that the miniature high-speed instrument is produced.The inner ring and the rotating shaft of a bearing in two bearings are connected as a single entity, and have made things convenient for the assembling of this disjunctor group diametrical connection contact bearing.Be respectively equipped with locking mouth and opening on the locating piece in the rotating shaft and the end of rotating shaft, by on locking mouth and opening, the jig that is connected both being set, make and have motion conformity preferably between locating piece and the rotating shaft, guaranteed the stability of two bearing axially spaced-aparts, be convenient to guarantee the performance of described spring effect, further improved the working stability of this disjunctor group diametrical connection contact bearing.
Description of drawings
Accompanying drawing 1 is the longitudinal sectional view of the utility model disjunctor group diametrical connection contact bearing.
Accompanying drawing 2 is that A among Fig. 1 is to view.
Accompanying drawing 3 is structural representations of rotating shaft.
Embodiment
See accompanying drawing 1,2,3, the structure of the utility model disjunctor group diametrical connection contact bearing comprises rotating shaft 3, bearing A1 and bearing B2, two bearings are socketed in the rotating shaft 3 side by side, have between them at interval, and rotating shaft 3 is provided with the locating piece that two bearings is carried out axially locating.These two bearings are angular contact bearing, the steel ball 2 in them and the wrapping angle positioned opposite of bear inner ring grooved railway.Be provided with in the periphery of rotating shaft 3 and separate part, this separates part between two bearings, is used for two bearings are separated.
The described part that separates is a spring 5, and spring 5 is formed by the spring steel bar coiling.The truncation surface of this spring steel bar is rectangular, spring steel bar along the axial dimension of spring 5 greater than along spring 5 size radially.The two ends of spring 5 act on respectively on the inner side surface of two bearing outer rings 9, and the external diameter of spring 5 equals the external diameter of bearing outer ring 9.
Bearing comprise outer ring 9, inner ring and be located between the inside and outside circle if steel ball 2, steel ball 2 is limited between the raceway groove on the inside and outside circle by retainer 4 with being stabilized.In two bearings, the inner ring of bearing A1 and rotating shaft 3 are connected as a single entity, and are formed with the raceway groove of half arc on the outer circumferential face of rotating shaft 3 in the position of bearing A1.Inner ring among the bearing B6 is socketed in the rotating shaft 3, is provided with the annular table terrace 12 perpendicular to rotating shaft 3 axis in rotating shaft 3, and the inner side surface of the inner ring among the bearing B6 and this step surface 12 are fitted.Above-mentioned locating piece is a nut 8 that is threaded in the rotating shaft 3, and nut 8 is positioned at the outside of bearing B6.Bearing B6 realizes axially locating by described nut 8 and step surface, and bearing A1 realizes axially locating by the raceway groove 12 and the spring 5 of half set in the rotating shaft 3 arc in rotating shaft 3.
In order to improve the stability of this disjunctor group diametrical connection contact bearing work, it radially is provided with locking mouth 10 described nut 8 upper edges, and the end near bearing B6 in rotating shaft 3 is axially arranged with opening 7 along it.Under normal circumstances, when nut 8 locks bearing B6 fully, the circumferential position of the opening 7 in the locking mouth 10 on the nut 8 and the rotating shaft 3 is consistent, be convenient to like this on opening 7 and locking mouth 10, be provided with the jig that is connected both, in order to avoid rotating shaft 3 is when rotating, because of making, action of centrifugal force takes place between nut 8 and the rotating shaft 3 to have influence on the relation of active force between two bearings and the spring 5, to have guaranteed the stability of this disjunctor group diametrical connection contact bearing work relative to circumferentially rotating.

Claims (8)

1. disjunctor group diametrical connection contact bearing, comprise rotating shaft and be located at two angular contact bearings in the rotating shaft side by side, two bearings along rotating shaft axially between have at interval, periphery in rotating shaft is provided with the part that separates that is used to limit the bearing axial float between two bearings, rotating shaft is provided with the locating piece that is used for bearing is carried out axially locating, it is characterized in that the described part that separates is spring (5), the two end part of spring (5) act on respectively on the inner side surface of two bearing outer rings (9).
2. disjunctor group diametrical connection contact bearing according to claim 1 is characterized in that, described spring (5) is become by the spring steel bar helically coiling, and the truncation surface of spring steel bar is rectangular.
3. disjunctor group diametrical connection contact bearing according to claim 2 is characterized in that, described spring steel bar along the axial width of rotating shaft (3) greater than it along rotating shaft (3) thickness radially.
4. disjunctor group diametrical connection contact bearing according to claim 1 is characterized in that the external diameter of described spring (5) equals the external diameter of bearing outer ring (9).
5. according to claim 1 or 2 or 3 or 4 described disjunctor group diametrical connection contact bearings, it is characterized in that, in described two bearings, inner ring on one of them bearing A (1) is formed in the rotating shaft (3), the raceway groove of this inner ring (11) is formed on the outer circumferential face of rotating shaft (3), inner ring on another bearing B (6) is socketed in the rotating shaft (3), and described locating piece is located at the outside of bearing B (6).
6. disjunctor group diametrical connection contact bearing according to claim 6 is characterized in that described rotating shaft (3) is provided with the platform diametric plane (12) that directly makes progress along it, and interior edge face and this step surface (12) of bearing B (6) inner ring fit.
7. disjunctor group diametrical connection contact bearing according to claim 7 is characterized in that described locating piece is a nut (8), and this nut (8) is threaded in the rotating shaft (3).
8. disjunctor group diametrical connection contact bearing according to claim 7 is characterized in that, the end that described rotating shaft (3) is gone up near described nut (8) is provided with opening (7), and it radially is provided with locking mouth (10) in nut (8) upper edge.
CNU2008203039056U 2008-12-30 2008-12-30 Siamesed assembling angular contact bearing Expired - Fee Related CN201359012Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008203039056U CN201359012Y (en) 2008-12-30 2008-12-30 Siamesed assembling angular contact bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008203039056U CN201359012Y (en) 2008-12-30 2008-12-30 Siamesed assembling angular contact bearing

Publications (1)

Publication Number Publication Date
CN201359012Y true CN201359012Y (en) 2009-12-09

Family

ID=41424775

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008203039056U Expired - Fee Related CN201359012Y (en) 2008-12-30 2008-12-30 Siamesed assembling angular contact bearing

Country Status (1)

Country Link
CN (1) CN201359012Y (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: ZHEJIANG UTE BEARING CO., LTD.

Free format text: FORMER OWNER: ZHENG ZIXUN

Effective date: 20120223

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20120223

Address after: Ten Chen Village, Xinqiao Town, Luqiao District, Zhejiang, Taizhou 318053, China

Patentee after: ZHEJIANG UTE BEARING CO., LTD.

Address before: The New Town Industrial Park, Luqiao District of Taizhou City, Zhejiang province 318053 Taizhou Special Bearing Co. Ltd.

Patentee before: Zheng Zixun

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091209

Termination date: 20161230