CN101183621B - Bearing assembly of switching mechanism for air circuit breaker and fabrication method thereof - Google Patents
Bearing assembly of switching mechanism for air circuit breaker and fabrication method thereof Download PDFInfo
- Publication number
- CN101183621B CN101183621B CN2007101823256A CN200710182325A CN101183621B CN 101183621 B CN101183621 B CN 101183621B CN 2007101823256 A CN2007101823256 A CN 2007101823256A CN 200710182325 A CN200710182325 A CN 200710182325A CN 101183621 B CN101183621 B CN 101183621B
- Authority
- CN
- China
- Prior art keywords
- thrust bearing
- support component
- flange portion
- bearing support
- switching mechanism
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
- H01H3/3015—Charging means using cam devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H2003/326—Driving mechanisms, i.e. for transmitting driving force to the contacts using bearings
Landscapes
- Sliding-Contact Bearings (AREA)
- Rolling Contact Bearings (AREA)
- Breakers (AREA)
Abstract
A bearing assembly of a switching mechanism for an air circuit breaker having multiple rotational shafts, that includes: a trust bearing ; and a trust bearing support member that includes an axial hole wall, an inner diameter part contacting with the trust bearing, a flange part extending from the inner diameter part, a rounded part formed between the inner diameter part and the flange part, and an annular recess portion formed at a lower portion of the flange part by pressing to lengthen the inner diameter part and shorten the length of the rounded part to thus increase the area contacting with the trust bearing. Because the contact area between the trust bearing and the bearing support member is increased, deformation of the bearing support member due to an axial load can be minimized.
Description
Technical field
The present invention relates to a kind of switching mechanism of air circuit, this air circuit is a kind of low-voltage circuit breaker, more particularly, relate to and a kind ofly support at least one rotation axis so that its bearing assembly that can rotate smoothly, this bearing assembly can support the bearing that bears a large amount of axial loads effectively.
Background technology
Air circuit comprises: switching mechanism, and this switching mechanism is switched on or switched off the galvanic circle; Bracket system is used to surround described switching mechanism, and this bracket system has the terminal part that links to each other with load with external power source; With circuit monitoring and control device, this circuit monitoring is monitored the fault current of the galvanic circle that links to each other with control device, and is provided for described switching mechanism is moved on to automatically the actuating force of disconnection (tripping operation) position.
The present invention relates to be called as the switching mechanism of main circuit part of the major part of air circuit, will describe the bearing assembly of prior art now.
In air circuit, the compression of closing spring (charging) operation, closed procedure, and disconnection (tripping operation) operation is the basic operation of air circuit.Specifically, during squeeze operation,, can apply a large amount of load to the camshaft of compression close spring by a large amount of elasticities of compression according to the high elastic coefficient of closing spring.
Therefore, trackslip movingly, used bearing in order to allow a large amount of load peace, with the corresponding axis direction of structure that supports this bearing on the load effect under, this supporting construction may be out of shape or damage.
The switching mechanism that is used for air circuit as shown in Figure 1 is installed between two side plate 6a, the 6b, wherein Reference numeral 1 is the camshaft of the compression cam (referring to the Reference numeral 2 of Fig. 2) that is used for the compression close spring (not shown), it is rotation axis, and Reference numeral 5 is handles that the end links to each other with camshaft 1, in order to rotating cam axle 1 manually.Camshaft 1 passes between two side plate 6a, the 6b and an extension from side plate 6a, 6b.
As shown in Figure 2, the bearing assembly of switching mechanism is installed in the outside of two compression cams 2 on the camshaft 1 respectively, is used for supporting cam wheel axle 2, makes camshaft 2 to rotate smoothly.
With reference to Fig. 3, comprise having flange portion and have the thrust bearing 3 of annular shape basically and rotatably support the thrust bearing support component 4 of this thrust bearing 3 according to the bearing assembly of prior art.
Now with reference to Fig. 4 describe according in the bearing assembly of prior art, the detailed structure of the thrust bearing support component 4 of support thrust bearing 3 rotatably.
Thrust bearing support component 4 according to prior art comprises: flange portion 4a, this flange portion 4a allow thrust bearing 3 to be mounted thereon; Inner-diameter portion whose 4, described thrust bearing contacts with this inner-diameter portion whose 4c when rotating; Circular portion 4b, this circular portion 4b are formed between flange portion 4a and the inner-diameter portion whose 4c; With the axial hole wall 4d that allows camshaft 1 therefrom to pass.
Now with reference to Fig. 5 and Fig. 6 the method that is used to make described bearing assembly according to prior art is described.
At first, prepare the raw material (not shown) of the thrust bearing support component 4 be rectangle substantially.
Then, as shown in Figure 5, these raw material are by punching press downwards, to obtain to have the half-wrought timber material that takes the shape of the letter U substantially of flange.
Then, as shown in Figure 6, the mid portion on the diametric(al) of this half-wrought timber material is had the thrust bearing support component 4 that takes the shape of the letter U substantially of intermediate throughholes by punching with formation.
Thereafter, thrust bearing 3 is inserted into the inner-diameter portion whose of the thrust bearing support component 4 that takes the shape of the letter U substantially, to finish the manufacturing of bearing assembly as shown in Figure 3.
Yet, in bearing assembly according to prior art, circular portion 4b form big (height that is circular portion 4b among Fig. 4 forms longlyer), and be shortened with thrust bearing 3 contacted inner-diameter portion whose 4c.
Therefore, the load centralization of thrust bearing of bearing a large amount of axial loads is in short inner-diameter portion whose 4c, and this just produces a problem, i.e. thrust bearing support component 4 distortion and damaging.
Summary of the invention
Therefore, in order to address the above problem, visualized various feature described here.An aspect of illustrative examples is that a kind of bearing assembly that is used for the switching mechanism of air circuit will be provided, in this bearing assembly, with the contacted inner-diameter portion whose of thrust bearing be long, to disperse to put on the axial load of thrust bearing support component.
Another aspect of illustrative examples is that a kind of method that is used to make the bearing assembly of the switching mechanism that is used for air circuit will be provided.
This specification provides a kind of bearing assembly of switching mechanism of the air circuit that is used to have a plurality of rotation axiss, this bearing assembly can comprise: thrust bearing, this thrust bearing supports at least one described rotation axis, make this rotation axis to rotate smoothly, this bearing comprises circumferential body part and the flange portion that extends from this main part; With the thrust bearing support component, this thrust bearing support component comprises: the axial hole wall that forms axial hole, described rotation axis passes this axial hole, from this axial hole wall extend and with the contacted inner-diameter portion whose of described thrust bearing, flange portion from this inner-diameter portion whose extension, be formed on the circular portion between the flange portion of described inner-diameter portion whose and described thrust bearing support component, annular recess with the bottom of the flange portion that is formed on described thrust bearing support component by punching press, prolonging described inner-diameter portion whose and to shorten the length of described circular portion, thereby increase and the contacted area of described thrust bearing.
This specification also provides a kind of method that is used to make the bearing assembly of the switching mechanism that is used for air circuit, and this method comprises: form the U-shaped unfinished work with flange portion by the flat raw material of downward punching press; Form annular recess by the bottom of the flange portion of this unfinished work of punching press upwards; Form axial hole by the bottom of piercing through described unfinished work; And by collar thrust bearing insertion bearings element is assembled.
In conjunction with the accompanying drawings, from following detailed description of the present invention, aforementioned and other purpose, feature, aspect and advantage of the present invention will become more obvious.
Description of drawings
Be included into this and sentence and provide further understanding of the present invention and constitute the accompanying drawing of this specification part, show embodiments of the invention, and play the effect of the explanation principle of the invention with description of the invention.
Wherein:
Fig. 1 is a perspective view, has shown according to the present invention or the switching mechanism that is used for air circuit of prior art, in this switching mechanism bearing assembly is installed;
Fig. 2 is a perspective view, has shown according to the present invention or the switching mechanism that is used for air circuit of prior art, and bearing assembly is installed in the state on the camshaft;
Fig. 3 is a perspective view, has shown according to the present invention or the confined state of the bearing assembly of the switching mechanism that is used for air circuit of prior art;
Fig. 4 is a cutaway view, has shown the bearings element according to the bearing assembly of the switching mechanism that is used for air circuit of prior art;
Fig. 5 is the manufacturing that has shown according to the bearing assembly of the switching mechanism that is used for air circuit of prior art, forms the view of the step of the U-shaped intermediate materials with flange portion by the flat raw material of downward punching press;
Fig. 6 has shown according to prior art, by piercing through the process that through hole is formed on bearing assembly U-shaped unfinished work bottom;
Fig. 7 is a cutaway view, has shown the bearings element according to the bearing assembly of the switching mechanism that is used for air circuit of the present invention;
Fig. 8 is a perspective view, has shown the bearings element according to the bearing assembly of the switching mechanism that is used for air circuit of the present invention; With
Fig. 9 is the view that has shown according to the process of the manufacture method of the bearing assembly of the switching mechanism that is used for air circuit of the present invention.
Embodiment
By with reference to the description of the embodiment of the invention of accompanying drawing, will be expressly understood purpose of the present invention, be used to realize the structure and the operating effect of this purpose.
As shown in Figure 3, bearing assembly according to the present invention comprises having the thrust bearing support component 4 that flange portion also has the thrust bearing 3 of annular shape basically and supports this thrust bearing 3 in rotating mode.
Describe according to the detailed structure in the bearing assembly of the present invention now with reference to Fig. 7 and Fig. 8 with the thrust bearing support component 4 of rotating mode support thrust bearing 3.
Thrust bearing support component 4 according to the present invention comprises: flange portion 4a, this flange portion 4a allow thrust bearing 3 to be mounted thereon; Inner-diameter portion whose 4c, thrust bearing 3 contacts with this inner-diameter portion whose 4c when rotating; Circular portion 4b, this circular portion 4b are formed between flange portion 4a and the inner-diameter portion whose 4c; Axial hole wall 4d, this axial hole wall 4d allows camshaft 1 therefrom to pass; With annular recess 4e, this annular recess 4e is formed on the bottom of flange portion 4a by punching press, prolonging inner-diameter portion whose 4c and to shorten the length of circular role 4b, thereby increases and thrust bearing 3 contacted areas.
The annular recess 4e of thrust bearing support component 4 is formed on the outer radius portion of thrust bearing support component 4 and the part that flange portion 4a intersects.
The method that is used to make according to bearing assembly of the present invention is described now with reference to Fig. 9.
At first, shown in the figure of the top among Fig. 9, the raw material of the thrust bearing support component 4 that preparation is rectangle substantially.
Then, shown in the figure below the figure that just is positioned at the top among Fig. 9, the downward described raw material of punching press are to obtain to have the unfinished work that takes the shape of the letter U substantially of flange.
Then, shown in the 3rd figure from top to bottom among Fig. 9, the bottom of this unfinished work flange portion of punching press upwards is to form annular recess.
, as from top to bottom 4th figure in Fig. 9 shown in, this unfinished work along diametric middle part carried out punching, have the thrust bearing support component 4 that takes the shape of the letter U substantially of middle axial hole with formation thereafter.
Thereafter, as among Fig. 9 shown in the figure of below, thrust bearing 3 is inserted into the inner-diameter portion whose of the thrust bearing support component 4 that takes the shape of the letter U substantially, to finish the manufacturing of this bearing assembly.
As mentioned above, compare with prior art, in bearing assembly according to the present invention, owing to prolonged and the contacted inner-diameter portion whose of bearing, so a large amount of axial loads can be disperseed, so bearing can be supported effectively.
In addition, be used to make method, produce the bearing that can be supported effectively according to bearing assembly of the present invention by use.
The present invention can be embodied in the various ways under the situation that does not deviate from its purport or substantive characteristics, what will also be understood that is, except as otherwise noted, the foregoing description is not subjected to the restriction of any details in the content described above, and should be explained that all changes and the modification that therefore drop within claim scope or its equivalent are all covered by claim widely in purport defined by the claims and scope.
Claims (3)
1. the bearing assembly of the switching mechanism of an air circuit that is used to have a plurality of rotation axiss, this bearing assembly comprises:
Thrust bearing, this thrust bearing supports at least one in the rotation axis, makes this rotation axis to rotate smoothly, and this thrust bearing comprises circumferential body part and the flange portion that extends from this main part; With
The thrust bearing support component, this thrust bearing support component comprises: form the axial hole wall of axial hole, described rotation axis passes this axial hole; From described axial hole wall extend and with the contacted inner-diameter portion whose of described thrust bearing; Flange portion from this inner-diameter portion whose extension; Be formed on the circular portion between the flange portion of described inner-diameter portion whose and described thrust bearing support component; With the annular recess of the flange portion bottom that is formed on described thrust bearing support component by punching press, prolonging described inner-diameter portion whose and to shorten the length of described circular portion, thereby increase and the contacted area of described thrust bearing.
2. assembly according to claim 1, wherein, the described annular recess of described thrust bearing support component is formed on the outer radius portion of described thrust bearing support component and the crossing part of flange portion of described thrust bearing support component.
3. the method for the bearing assembly of a switching mechanism that is used to make air circuit, this method comprises:
Form U-shaped unfinished work with flange portion by the flat raw material of downward punching press;
Form annular recess by the bottom of the described flange portion of the described unfinished work of punching press upwards;
Form axial hole by the bottom of piercing through described unfinished work; And
By being inserted in the bearings element, assembles by collar thrust bearing.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060101053 | 2006-10-17 | ||
| KR10-2006-0101053 | 2006-10-17 | ||
| KR1020060101053A KR100807542B1 (en) | 2006-10-17 | 2006-10-17 | A bearing assembly of switching mechanism for an air circuit breaker and method for making the assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101183621A CN101183621A (en) | 2008-05-21 |
| CN101183621B true CN101183621B (en) | 2010-11-10 |
Family
ID=38926394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101823256A Active CN101183621B (en) | 2006-10-17 | 2007-10-17 | Bearing assembly of switching mechanism for air circuit breaker and fabrication method thereof |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1914776B1 (en) |
| KR (1) | KR100807542B1 (en) |
| CN (1) | CN101183621B (en) |
| DE (1) | DE602007005572D1 (en) |
| ES (1) | ES2343753T3 (en) |
| MY (1) | MY153158A (en) |
| RU (1) | RU2346348C1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101677998B1 (en) * | 2010-12-16 | 2016-11-22 | 엘에스산전 주식회사 | Shaft assembly for mold cased circuit breaker |
| CN105965206B (en) * | 2016-05-10 | 2017-11-07 | 重庆江增船舶重工有限公司 | The processing method and its mill instrument of turbocharger collar thrust bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1923892A (en) * | 1929-07-01 | 1933-08-22 | O & S Bearing Company | Steering column bearing |
| US3600540A (en) * | 1969-11-06 | 1971-08-17 | Westinghouse Electric Corp | Motor-operated spring-closing circuit breaker |
| US4336516A (en) * | 1980-03-31 | 1982-06-22 | Westinghouse Electric Corp. | Circuit breaker with stored energy toggle-lock structure |
| US5704717A (en) * | 1996-09-17 | 1998-01-06 | Franklin Electric Co., Inc. | Bearing support for rotary machine |
| CN2478224Y (en) * | 2001-03-23 | 2002-02-20 | 普兰店市气动件厂 | Electric open/close switch operator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100473068B1 (en) * | 1997-09-30 | 2005-07-07 | 오리온전기 주식회사 | Cathode manufacturing method of electron gun |
-
2006
- 2006-10-17 KR KR1020060101053A patent/KR100807542B1/en active IP Right Grant
-
2007
- 2007-10-11 DE DE602007005572T patent/DE602007005572D1/en active Active
- 2007-10-11 EP EP07019933A patent/EP1914776B1/en active Active
- 2007-10-11 ES ES07019933T patent/ES2343753T3/en active Active
- 2007-10-16 RU RU2007138410/09A patent/RU2346348C1/en active
- 2007-10-17 MY MYPI20071798A patent/MY153158A/en unknown
- 2007-10-17 CN CN2007101823256A patent/CN101183621B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1923892A (en) * | 1929-07-01 | 1933-08-22 | O & S Bearing Company | Steering column bearing |
| US3600540A (en) * | 1969-11-06 | 1971-08-17 | Westinghouse Electric Corp | Motor-operated spring-closing circuit breaker |
| US4336516A (en) * | 1980-03-31 | 1982-06-22 | Westinghouse Electric Corp. | Circuit breaker with stored energy toggle-lock structure |
| US5704717A (en) * | 1996-09-17 | 1998-01-06 | Franklin Electric Co., Inc. | Bearing support for rotary machine |
| CN2478224Y (en) * | 2001-03-23 | 2002-02-20 | 普兰店市气动件厂 | Electric open/close switch operator |
Also Published As
| Publication number | Publication date |
|---|---|
| MY153158A (en) | 2015-01-29 |
| ES2343753T3 (en) | 2010-08-09 |
| DE602007005572D1 (en) | 2010-05-12 |
| EP1914776A1 (en) | 2008-04-23 |
| EP1914776B1 (en) | 2010-03-31 |
| RU2346348C1 (en) | 2009-02-10 |
| KR100807542B1 (en) | 2008-02-29 |
| CN101183621A (en) | 2008-05-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |