CN101930881B - Rotating handle operating device of moulded case circuit breaker - Google Patents
Rotating handle operating device of moulded case circuit breaker Download PDFInfo
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- CN101930881B CN101930881B CN 201010188624 CN201010188624A CN101930881B CN 101930881 B CN101930881 B CN 101930881B CN 201010188624 CN201010188624 CN 201010188624 CN 201010188624 A CN201010188624 A CN 201010188624A CN 101930881 B CN101930881 B CN 101930881B
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Abstract
The invention relates to a rotating handle operating device of moulded case circuit breaker. Straight pulling operating mode is changed into rotating handle operating mode. The operating device comprises a cover, a rotating handle, a rocker, a guide plate provided with a socket, a guiding mechanism which is composed of two groove-shaped guide rails and supporting axles and a bearing as well as a shifting mechanism which is composed of a chute, a shifting shaft and a rolling bearing; wherein the rocker and the rotating handle are respectively arranged at the inner side and outer side of the cover, the chute is formed on the rocker, the shifting shaft is fixed on the guide plate, the rolling bearing is arranged on the shifting shaft and is inserted into the chute, the groove-shaped guide rail of the guiding mechanism is arranged and fixed in the cover, the bearing shaft is fixed on the two sides of the guide plate, and the bearing is arranged on the supporting axle and is inserted into the guide groove of the groove-shaped guide rail. The guiding mechanism and shifting mechanism all adopt rolling friction structure, so that friction resistance is small, transmission is flexible, and the defect that operation is strenuous in the prior art is overcome, thus being especially applicable to moulded case circuit breaker of large case frame.
Description
Technical field
The present invention relates to the lever operated device that the lever operated mode of straight pull is converted into the rotary handle mode of operation on a kind of rotating handle operating device, particularly breaker of plastic casing.
Background technology
The handle overwhelming majority of operating mechanism is the straight pull handle on the breaker of plastic casing of producing at present, and when the branch of carrying out circuit breaker, closing operation, the track that handle is pulled operation is a straight line.Because the use occasion of circuit breaker is different, start from considerations such as easy to operate, safe, the occasion that has needs the circuit breaker of rotary handle mode of operation, and the track that the handle of rotary handle operation is pulled is an arc.The solution that prior art satisfies these needs is additional outside rotating handle operating device the inside of breaker of plastic casing straight pull is lever operated; The remarkable advantage of this scheme is not influence the lever operated function of the original straight pull of breaker of plastic casing; The function that has simultaneously the rotary handle operation again, so this scheme is widely used.
The rotating handle operating device that uses on the existing breaker of plastic casing has two big types, and one type is fork type, and another kind of is slide type.The rotary handle of fork type rotating handle operating device drives a shift fork that rotates round fulcrum, and the straight pull handle on the breaker of plastic casing is inserted in the socket on the shift fork.Because the movement locus of the socket on the shift fork is a circular arc; And the movement locus of straight pull handle is a straight line; Therefore stir in the operating process of straight pull handle at shift fork; The straight pull handle inevitably with shift fork on socket rub, even the problem that also may occur killing, thus cause the fork type rotating handle operating device obviously to have defectives such as operation is hard, serviceability is not good enough.The rotary handle of slide type rotating handle operating device drives a straight-line slide plate; Straight pull handle on the breaker of plastic casing is inserted in the socket of slide plate; Its advantage is that the movement locus of slide plate socket and the movement locus of straight pull handle are straight line, so do not have socket and the friction between the straight pull handle of slide plate, the problem of killing.Utility model patent number is the prior art of stirring device of 92224360.3 breaker of plastic casing handle, discloses a kind of scheme of slide type rotating handle operating device, and be characterized in: the rotary axle box that rotary handle is housed is contained in the shaft hole of support; The inner of rotation axis is provided with the tooth bar meshed gears on the slide plate; Slide plate is installed in the chute of support, and slide plate is provided with the socket of assigning the straight pull handle, and the straight pull handle on the breaker of plastic casing assigns in the socket; When rotary handle rotates; Driven gear rotates, and gear rotates driving sliding block along chute direction moving linearly, thereby the straight pull handle that drives on the breaker of plastic casing is done the operation motion.Such major defect by the slide type rotating handle operating device of gear/tooth bar transmission is: because by gear/tooth bar and transmission mechanism that slide plate/the chute guide rail is formed complicacy; Need with a large amount of metalworks, and most of part is stamping forming, so; Machining accuracy is difficult to improve; The Installation and Debugging difficulty, production cost is high, and product weight is heavy; Because gear/tooth bar engagement is for sliding friction, under the low situation of machining accuracy, the operation of the rotary handle of this technology is still relatively harder.Utility model patent number discloses the scheme of another kind of slide type rotating handle operating device for the breaker of plastic casing handle striking gear of CN02218169.5; Its design feature is: it comprises a case; Shifting part is housed on case, and an end of shifting part is connected with rotary handle, and the other end is connected with embedding axle on the slide plate; Slide plate is provided with two axle sleeves; Two steel axles are housed on case, and two axle sleeves on the slide plate are enclosed within respectively on two steel axles, and slide plate is provided with the socket of the straight pull handle of assigning breaker of plastic casing.When rotary handle rotates, drive the shifting part swing, shifting part drives the slide plate moving linearly through the embedding axle, and the rectilinear motion of slide plate drives the branch/closing operation of the straight pull handle execution breaker of plastic casing on the breaker of plastic casing.The defective of this prior art is: adopted slide plate/steel axis rail, and steel axle part needs to process with metal, production cost is high, the assembling and setting difficulty; Slide plate/steel axis rail can only adopt the sliding friction structure, and frictional resistance is big, transmission is extremely dumb; Also adopt the sliding friction structure between the embedding axle on shifting part and the slide plate, frictional resistance is big, transmission is extremely dumb; Because frictional resistance is big, cause operation hard, also exist sometimes and kill phenomenon.
In sum, two big technological deficiencies below the rotating handle operating device ubiquity of the breaker of plastic casing of prior art: operation is hard, transmission dumb (phenomenon of having a contest between the driving member even occurring killing), and serviceability is not good enough; Mechanism is complicated, Installation and Debugging are difficult, metalwork is many, and manufacturing cost is expensive.
Summary of the invention
The objective of the invention is to overcome the defective of prior art; A kind of rotating handle operating device of operating light, simple in structure, easy manufacturing, cost is low, the scope of application is wide breaker of plastic casing is provided; Be characterized in: the rolling friction form is all adopted in transmissions at different levels; Rapid operation, serviceability is splendid, simple in structure, production cost is low, is particularly useful for the breaker of plastic casing of big shell frame.
For realizing above-mentioned purpose, the present invention adopts following technical scheme.A kind of rotating handle operating device of breaker of plastic casing; It comprises lid, rotary handle, rocking arm, the guide plate that is provided with socket, guiding mechanism and toggle mechanism; Described rocking arm and rotary handle are installed in the inside and outside both sides of lid respectively through screw; Described guide plate is installed in the lid through described guiding mechanism, and described rocking arm flexibly connects through described toggle mechanism and described guide plate.Described guiding mechanism comprises two groove shaped guide rails, at least three bolsters and the bearing corresponding with back shaft; On every groove shaped guide rail, be provided with guide groove, described guide groove is formed Baltimore groove by two guide surface that are parallel to each other and a baseplane of intersecting with guide surface; Described two groove shaped guide rails are separately fixed in the described lid, and the guide groove on the groove shaped guide rail is connected with mode and the described bearing that holds bearing; Described bolster is separately fixed on two sides of described guide plate; Described bearing is installed in respectively on each bolster, and bearing is connected through mode and the described guide groove that inserts guide groove; The cylindrical external diameter of described bearing is slightly less than the guide groove width H of described guide groove, the periphery that makes each bearing synchronization only with a guide surface contact matching of place guide groove.
Described toggle mechanism can comprise the shifting shaft that is fixed on the guide plate, be installed in first rolling bearing on the described shifting shaft, be formed on the chute on the rocking arm; Described shifting shaft and guide plate are same body member; Perhaps shifting shaft is that split is fixedly connected with guide plate, and this is most preferred a kind of execution mode.The another kind of execution mode of described toggle mechanism is: described toggle mechanism comprises the shifting shaft that is fixed on the rocking arm, be installed in first rolling bearing on the said shifting shaft, be formed on the chute on the guide plate; Described shifting shaft and rocking arm are same body member, and perhaps shifting shaft is that split is fixedly connected with rocking arm.No matter take any in these two kinds of execution modes of this section, the outer ring external diameter of described first rolling bearing all is slightly less than the groove width L of described chute, the outer ring of first rolling bearing is only cooperated with a sidewall of chute contact.Described first rolling bearing is a kind of in single-row bearing or the double-row bearing.
As the alternative of preceding two kinds of toggle mechanisms is execution mode; Described toggle mechanism comprises the shifting shaft that is fixed on the guide plate, be installed in rolling disk on the said shifting shaft, be formed on the chute on the rocking arm; Described shifting shaft and guide plate are same body member, and perhaps shifting shaft is that split is fixedly connected with guide plate.Perhaps; The another kind of execution mode of said toggle mechanism is: described toggle mechanism comprise the shifting shaft that is fixed on the rocking arm, pivotally be installed in rolling disk on the said shifting shaft, be formed on the chute on the guide plate; Described shifting shaft and rocking arm are same body member, and perhaps shifting shaft is that split is fixedly connected with rocking arm.No matter take described which kind of execution mode of this section, the cylindrical D outer diameter of described rolling disk all is slightly less than the groove width L of described chute, and the cylindrical D outer diameter of rolling disk is only contacted with a sidewall cooperation of chute.
The bearing of described guiding mechanism is a kind of in single-row rolling bearing or double-row bearing or the sliding bearing.When adopting sliding bearing, the inner headed face of the bearing shell of described sliding bearing is connected with bolster, and the guide surface in the guide groove of the periphery of said bearing shell and groove shaped guide rail is connected, and described inner headed face is concentric with periphery; The diameter of the periphery of said bearing shell is slightly less than the guide groove width H of guide groove so that the periphery of the bearing shell on each bearing simultaneously can only with a guide surface contact matching in the guide groove of place.The ratio of the diameter ratio of the diameter of the periphery of described bearing shell and the inner headed face of bearing shell is more than or equal to 1.2.
Can take following mode to be connected between groove shaped guide rail and the lid: described two groove shaped guide rails and described lid are respectively separate elements, through at least four screws two groove shaped guide rails are fixedly connected on the boss in the lid.Can also take following mode to be connected between groove shaped guide rail and the lid: described two groove shaped guide rails and described lid are same body member; Perhaps wherein groove shaped guide rail and lid are same body member, and another root groove shaped guide rail is that split is fixedly connected with lid.
Description of drawings
Fig. 1 is the profile sketch map of the rotating handle operating device embodiment of breaker of plastic casing of the present invention.
Fig. 2 is the internal structure sketch map of the rotating handle operating device embodiment of breaker of plastic casing of the present invention.
Fig. 3 is the structural representation of rocking arm part of the rotating handle operating device embodiment of breaker of plastic casing of the present invention.
Fig. 4 is the structural representation of guide plate part of the rotating handle operating device embodiment of breaker of plastic casing of the present invention.
Fig. 5 is the structural representation of groove shaped guide rail part of the rotating handle operating device embodiment of breaker of plastic casing of the present invention.
Fig. 6 is the sketch map of toggle mechanism of another embodiment of the rotating handle operating device of breaker of plastic casing of the present invention, has adopted the element of rolling disk among the figure.
Embodiment
Shown in the accompanying drawing 1 to 5 is an embodiment of the rotating handle operating device of breaker of plastic casing of the present invention, and the rotating handle operating device of breaker of plastic casing of the present invention is not limited to this embodiment.
Shown in Fig. 1 to 5; The rotating handle operating device of breaker of plastic casing of the present invention comprises a lid 1, rotary handle 8, Rocker arm 5, guide plate that is provided with socket 11 4, guiding mechanism of being made up of two groove shaped guide rails 3 and four bolsters 9 and four bearings 10, a toggle mechanism of being made up of chute 7 and shifting shaft 12 and first rolling bearing 13, and said lid 1 can directly be fixedly connected with the breaker of plastic casing (not shown).After the cover plate 1 of rotating handle operating device of the present invention installs and fixes on the breaker of plastic casing; Handle (not shown) on the breaker of plastic casing is just in time inserted in the socket 11 on the guide plate 4 of rotating handle operating device, with rotatablely moving through converting the rectilinear motion of guide plate 4 to the rotary handle 8 of rotating handle operating device.
Described guide plate 4, two groove shaped guide rails (3), four bolsters 9 and four bearings 10 have constituted guiding mechanism of the present invention, and guide plate 4 is installed in the lid 1 through guiding mechanism, and can moving linearly.Describedly be formed on chute 7 on the Rocker arm 5, be fixed on shifting shaft 12 on the guide plate 4, be installed on the shifting shaft 12 first rolling bearing 13 and constituted toggle mechanism of the present invention; Rocker arm 5 has been realized the flexible connection with guide plate 4 through this toggle mechanism; this is slidingly connected is exactly that first rolling bearing 13 assigns in the chute 7, and sidewall 18 contact matching of the outer round surface of the outer ring of first rolling bearing 13 and chute 7.
Visible by Fig. 2, the two groove shaped guide rails 3 and the lid 1 of the foregoing description are separate elements, and two groove shaped guide rails 3 all are fixedly connected on the boss 2 in the lid 1 through screw 17, and this also is an embodiment preferred.The scheme of alternative this scheme is that groove shaped guide rail 3 is same body member with described lid 1, and comprising two kinds of situation: a kind of is that two groove shaped guide rails 3 are same body member with lid 1 all; Another kind is that wherein groove shaped guide rail and lid 1 is same body member, and another root groove shaped guide rail is fixedly connected for split with lid 1.
Visible by Fig. 4; The bearing 10 of the foregoing description and the quantity of bolster 9 are respectively 4; Four bolsters 9 and four bearings 10 are separately fixed on two sides of guide plate 4, promptly all are assigned two bolsters 9 and two bearings 10 on each side of guide plate 4, and this is an embodiment preferred.The scheme of alternative this embodiment is: the number of selected according to actual needs bolster 9 and bearing 10, but the minimum number of bolster 9 and bearing 10 should be respectively more than or equal to 3.Number at bolster 9 and bearing 10 equals respectively under 3 situation, on two sides of guide plate 4, has a side to be assigned two bolsters 9 and two bearings 10, and is assigned a bolster 9 and a bearing 10 on another side.The number of bolster 9 and bearing 10 respectively greater than 3 situation under; The bolster 9 on each side of guide plate 4 and the allotment of bearing 10 should meet the following conditions: the allotment on one of them side should be more than or equal to a bolster 9 and a bearing 10, and the allotment on another side should be more than or equal to two bolsters 9 and two bearings 10.This shows that the number of all bolster 9 and bearing 10 is respectively greater than 3 or to equal 3 scheme all are the alternative schemes of present embodiment.
As shown in Figure 4, the bearing 10 of above embodiment is preferentially selected single-row rolling bearing for use, can certainly use double-row bearing, but double-row bearing is higher than single-row rolling bearing cost.Bearing 10 also can be selected sliding bearing for use, owing to do not have rolling element between the bearing shell of sliding bearing and the bolster, so its frictional resistance is greater than rolling bearing.
Shown in Fig. 3 and 4; The chute 7 of the foregoing description is formed on the Rocker arm 5, and the shifting shaft 12 that matches with chute 7 is fixed on the guide plate 4, and this also is a kind of preferred scheme; Another program is: chute 7 is formed on the guide plate 4, and the shifting shaft that matches with chute 7 is fixed on the Rocker arm 5.When chute 7 was formed on the Rocker arm 5, shifting shaft 12 with annexation between the guide plate 4 is: shifting part 12 was that split is fixedly connected with guide plate 4; Perhaps shifting part 12 is same body member with guide plate 4.When chute 7 is formed on 4 last times of guide plate, shifting shaft 12 with annexation between the Rocker arm 5 is: shifting shaft 12 is that split is fixedly connected with Rocker arm 5; Perhaps shifting shaft 12 is same body member with Rocker arm 5.
In the embodiment shown in fig. 4, toggle mechanism has adopted first rolling bearing 13, and this is a kind of preferred scheme.Another embodiment shown in Figure 6 has substituted rolling bearing 13 with rolling disk 19.Because no rolling element transition is connected between rolling disk 19 and the shifting shaft 12, so rolling disk 19 is bigger than the frictional resistance of rolling bearing 13, but owing to production cost is low relatively, so still can be widely used.Yet, when adopting rolling disk 19, need the well relevant structural parameters of appropriate design, could obtain desirable effect.Below in conjunction with shown in Figure 6, further specify some crucial structural technical characterictics of rolling disk 19 of the present invention.As shown in Figure 6, described rolling disk 19 is a circular discs, and the center of rolling disk 19 is provided with circular centre bore, and centre bore is concentric with the cylindrical of rolling disk.Rolling disk pivots with shifting shaft 12 through centre bore and is connected; Sidewall 18 contact matching of the surface of the cylindrical of rolling disk 19 and chute 7, thus the flexible connection of rolling disk 19 formed with chute 7.The external diameter of rolling disk (being the diameter of rolling disk cylindrical) D need be slightly less than the groove width L of chute 7, so that the surface of the cylindrical of rolling disk 19 can not contact with two sidewalls 18 in the chute 7 simultaneously.Another characteristic of rolling disk 19 is; K is bigger for the ratio of the D outer diameter of rolling disk 19 and the diameter d of described centre bore (call in the following text footpath than); Specifically; The footpath ratio of rolling disk 19 is bigger than the similar elements scroll wheel or the cover that rolls, thereby makes rolling disk 19 more be superior to the scroll wheel of provided as one homogeneous element or the cover that rolls for the ensuring smooth transmission property that toggle mechanism provided.
Bearing 10 in the above-mentioned guiding mechanism is in the scheme of preferred employing rolling bearing; Described rolling bearing can adopt a kind of in single-row rolling bearing or the double-row bearing; But preferably single-row rolling bearing; Because it is simple in structure, cost is low, so it more is applicable to guiding mechanism of the present invention.
First rolling bearing 13 in the above-mentioned toggle mechanism can adopt a kind of in single-row bearing or the double-row bearing, but single-row bearing preferably, because it is simple in structure, cost is low, so it more is applicable to toggle mechanism of the present invention.
Claims (7)
1. the rotating handle operating device of a breaker of plastic casing; It comprises lid (1), rotary handle (8), rocking arm (5), is provided with guide plate (4), guiding mechanism and the toggle mechanism of socket (11); Described rocking arm (5) and rotary handle (8) are installed in the inside and outside both sides of lid (1) respectively through screw (6); Described guide plate (4) is installed in the lid (1) through described guiding mechanism, and described rocking arm (5) flexibly connects through described toggle mechanism and described guide plate (4), it is characterized in that:
Described guiding mechanism comprises two groove shaped guide rails (3), at least three bolsters (9) and the bearing (10) corresponding with bolster (9); On every groove shaped guide rail (3), be provided with guide groove (14), described guide groove (14) is formed Baltimore groove by two guide surface that are parallel to each other (15) and a baseplane (16) of intersecting with guide surface (15);
Described two groove shaped guide rails (3) are separately fixed in the described lid (1), and the guide groove (14) on the groove shaped guide rail (3) is connected with mode and the described bearing (10) that holds bearing (10);
Described bolster (9) is separately fixed on two sides of described guide plate (4);
Described bearing (10) is installed in respectively on each bolster (9), and bearing (10) is connected through mode and the described guide groove (14) that inserts guide groove (14);
The cylindrical external diameter of described bearing (10) is slightly less than the guide groove width H of described guide groove (14), the periphery that makes each bearing (10) synchronization only with a guide surface (15) contact matching of place guide groove (14).
2. the rotating handle operating device of breaker of plastic casing according to claim 1 is characterized in that:
Described toggle mechanism comprises the shifting shaft (12) that is fixed on the guide plate (4), be installed in first rolling bearing (13) on the described shifting shaft (12), be formed on the chute (7) on the rocking arm (5);
The outer ring external diameter of described first rolling bearing (13) is slightly less than the groove width L of described chute (7), and the outer ring of first rolling bearing (13) is only contacted with a sidewall cooperation of chute (7).
3. according to the rotating handle operating device of the breaker of plastic casing of claim 1, it is characterized in that:
Described toggle mechanism comprises the shifting shaft that is fixed on the guide plate (4), be installed in rolling disk (19) on the said shifting shaft (12), be formed on the chute (7) on the rocking arm (5);
The cylindrical D outer diameter of described rolling disk (19) is slightly less than the groove width L of described chute (7), and the cylindrical D outer diameter of rolling disk (19) is only contacted with a sidewall cooperation of chute (7).
4. according to the rotating handle operating device of the breaker of plastic casing of claim 1, it is characterized in that:
Described toggle mechanism comprise the shifting shaft that is fixed on the rocking arm (5), pivotally be installed in rolling disk (19) on the said shifting shaft, be formed on the chute on the guide plate (4);
The D outer diameter of described rolling disk (19) is slightly less than the groove width L of described chute, and the cylindrical D outer diameter of rolling disk (19) is only contacted with a sidewall cooperation of chute (7).
5. according to the rotating handle operating device of the breaker of plastic casing of claim 1, it is characterized in that: a kind of in single-row rolling bearing or double-row bearing or the sliding bearing of described bearing (10).
6. according to the rotating handle operating device of the breaker of plastic casing of claim 5, it is characterized in that:
The inner headed face of the bearing shell of described sliding bearing pivots with bolster and is connected, and the guide surface (15) in the guide groove (14) of the periphery of said bearing shell and groove shaped guide rail (3) is connected, and described inner headed face is concentric with periphery;
The diameter of the periphery of said bearing shell is slightly less than the guide groove width H of guide groove (14) so that the periphery of the bearing shell on each bearing (10) simultaneously can only with a guide surface (15) contact matching in the place guide groove (14).
7. according to the rotating handle operating device of the breaker of plastic casing of claim 2, it is characterized in that: a kind of in single-row bearing or the double-row bearing of described first rolling bearing (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188624 CN101930881B (en) | 2010-06-02 | 2010-06-02 | Rotating handle operating device of moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188624 CN101930881B (en) | 2010-06-02 | 2010-06-02 | Rotating handle operating device of moulded case circuit breaker |
Publications (2)
| Publication Number | Publication Date |
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| CN101930881A CN101930881A (en) | 2010-12-29 |
| CN101930881B true CN101930881B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010188624 Active CN101930881B (en) | 2010-06-02 | 2010-06-02 | Rotating handle operating device of moulded case circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060068578A (en) * | 2004-12-16 | 2006-06-21 | 엘에스산전 주식회사 | External operation handle device of wiring breaker |
| CN100583344C (en) * | 2005-07-12 | 2010-01-20 | 丁文军 | Electric switch-on device of breaker |
| CN101192488A (en) * | 2006-11-22 | 2008-06-04 | 浙江正泰电器股份有限公司 | Plastic case breaker twist grip operation mechanism |
| CN201112167Y (en) * | 2007-09-04 | 2008-09-10 | 常熟开关制造有限公司(原常熟开关厂） | Manual operation mechanism for circuit breaker |
| CN201142306Y (en) * | 2008-01-04 | 2008-10-29 | 方云祥 | Slider assembly in the cam drive mechanism of dual power automatic transfer switch |
| CN201780944U (en) * | 2010-06-02 | 2011-03-30 | 上海诺雅克电气有限公司 | Rotary handle operating device of molded case circuit breaker |
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Application publication date: 20101229 Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of invention: Rotary handle operating device of molded case circuit breaker Granted publication date: 20121219 License type: Common License Record date: 20211025 |