CN211529867U - Permanent magnet operating mechanism with expandable stroke - Google Patents
Permanent magnet operating mechanism with expandable stroke Download PDFInfo
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- CN211529867U CN211529867U CN201922409824.5U CN201922409824U CN211529867U CN 211529867 U CN211529867 U CN 211529867U CN 201922409824 U CN201922409824 U CN 201922409824U CN 211529867 U CN211529867 U CN 211529867U
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- magnetic
- permanent magnet
- iron core
- cover plate
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Abstract
The utility model discloses a permanent magnet operating mechanism with expandable stroke, which comprises a separating brake cover plate, a magnetic cylinder, a permanent magnet, a magnetic yoke, a coil framework combination, an iron core combination and a closing cover plate, wherein the iron core combination is arranged at the center of the magnetic cylinder, and the separating brake cover plate and the closing cover plate are respectively arranged at the two ends of the magnetic cylinder; a magnetic yoke and a coil framework combination are sequentially arranged on the periphery of the iron core combination, and a permanent magnet is arranged between the magnetic yoke and the magnetic cylinder; the magnetic cylinder, the permanent magnet, the magnetic yoke, the iron core combination and the closing cover plate form a closing maintaining magnetic circuit, and a chamfer angle is arranged at the assembly position between the iron core combination and the magnetic yoke.
Description
Technical Field
The utility model relates to a high voltage alternating current circuit breaker operating mechanism technique, in particular to permanent magnetism operating mechanism of expanded stroke.
Background
The permanent magnet operating mechanism is compared with an electromagnetic operating mechanism and a spring operating mechanism, the permanent magnet operating mechanism is kept by permanent magnets and is controlled electronically, the structure is simple, the number of parts is small, the opening and closing limit position is reached mainly by the movement of a movable iron core during working, and mechanical tripping and locking devices are avoided. Particularly, for the vacuum circuit breaker, the more the operating force required for closing is approaching, the more the operating characteristics of the permanent magnet operating mechanism are matched with those of other types of operating mechanisms, so that the market application of the permanent magnet operating mechanism is more and more increased in recent years. In practical design, the holding force and the electromagnetic driving force of the permanent magnet operating mechanism have a direct proportion relation with the stroke and the volume of the permanent magnet operating mechanism, and the larger the volume, the higher the cost.
Disclosure of Invention
The utility model discloses aim at optimizes the magnetic conduction route through the structure of improving permanent magnetic mechanism iron core and yoke, makes under the unchangeable condition of mechanism's stroke, volume minimizing, the holding power maximize.
The utility model provides an expanded permanent magnetism operating mechanism of stroke which characterized in that:
comprises a brake separating cover plate, a magnetic cylinder, a permanent magnet, a magnetic yoke, a coil framework combination, an iron core combination and a brake closing cover plate,
an iron core combination is arranged in the center of the magnetic cylinder, and an opening cover plate and a closing cover plate are respectively arranged at two ends of the magnetic cylinder;
the periphery of the iron core combination is sequentially sleeved with a magnetic yoke and a coil framework combination, and a permanent magnet is arranged between the magnetic yoke and the magnetic cylinder;
the magnetic cylinder, the permanent magnet, the magnetic yoke, the iron core combination and the closing cover plate form a closing maintaining magnetic circuit,
and a chamfer is arranged at the assembly position between the iron core combination and the magnetic yoke.
Further, the chamfer angle is 30-60 °.
Further, the chamfer was 45 °.
The utility model has the advantages of it is following:
the utility model discloses the magnetic line of force shortens at iron core combination and yoke junction magnetic line, and area of contact increases, therefore the holding power has obtained the maximize.
Drawings
Fig. 1 is a diagram of the structure and magnetic circuit of a typical permanent magnet mechanism.
Fig. 2 is a structure and magnetic circuit diagram of the mechanism.
Fig. 3 is a core assembly and yoke engineering drawing of a typical permanent magnet mechanism.
Fig. 4 is a partial schematic view of the core assembly and yoke of the present mechanism.
Fig. 5 is a core assembly and yoke engineering drawing of a typical permanent magnet mechanism.
Fig. 6 is a partial schematic view of the core assembly and the yoke chamfer of the present mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, 3, and 5, the permanent magnet operating mechanism with a typical structure in the prior art is mainly composed of a switching-off cover plate 1, a magnetic cylinder 2, a permanent magnet 3, a magnetic yoke 4, a coil and skeleton combination 5, an iron core combination 6, and a switching-on cover plate 7, and is characterized in that the magnetic cylinder 2, the permanent magnet 3, the magnetic yoke 4, the iron core combination 6, and the switching-on cover plate 7 constitute a switching-on maintaining magnetic circuit, and at the moment when the coil and skeleton combination 5 is powered on, the strong electromagnetic force generated by the electromagnetic coil pushes the iron core combination 6 from the switching-off position to the switching-on position, at this moment, the permanent magnet 3 attracts the iron core combination 6, the. Due to the limitation of volume, the mechanism stroke shown in the attached drawing 1 is only 19mm, the requirements of most circuit breakers cannot be met, if the stroke is increased, the magnetic cylinder 2 must be lengthened under the condition that the holding force and the electromagnetic force are not changed, the cost is increased, the mounting structures of some switches are influenced, and the problem is solved easily by adopting an extended stroke mechanism structure.
The utility model provides a following technical scheme:
a permanent magnet operating mechanism with an expandable stroke comprises a brake separating cover plate 1, a magnetic cylinder 2, a permanent magnet 3, a magnetic yoke 4, a coil framework combination 5, an iron core combination 6 and a closing cover plate 7,
an iron core combination 6 is arranged at the center of the magnetic cylinder 2, and an opening cover plate 1 and a closing cover plate 7 are respectively arranged at two ends of the magnetic cylinder;
a magnetic yoke 4 and a coil framework combination 5 are sequentially arranged on the periphery of the iron core combination 6, and a permanent magnet 3 is arranged between the magnetic yoke 4 and the magnetic cylinder 2;
the magnetic cylinder 2, the permanent magnet 3, the magnetic yoke 4, the iron core combination 6 and the closing cover plate 7 form a closing holding magnetic circuit,
and a chamfer is arranged at the assembly position between the iron core combination 6 and the magnetic yoke 4.
Further, the chamfer angle is 30-60 °.
Further, the chamfer was 45 °.
When the extension stroke is maximum, the large end surface of the iron core combination 6 is flush with the plane of the magnetic yoke 4.
As shown in fig. 2, the utility model relates to a permanent magnetism operating mechanism structure of expanded stroke, its action stroke under the unchangeable condition of appearance, the stroke has reached 26mm, and is same, can expand into other sizes, for example 30mm etc. can expand to the biggest 6 big terminal surfaces of iron core combination and 4 plane parallel and levels of yoke. This expansion is achieved by mechanically chamfering the core assembly 6 and the yoke 4 at 45 °, comparing before and after machining as shown in fig. 3 and 4, the chamfer being shown as C7, i.e. 7mm on both sides C. In practice, the size of the iron core assembly 6 can be reversed to be consistent with the thickness of the large section of the iron core assembly 6 (namely, the large end face of the iron core assembly 6 is flush with the plane of the magnetic yoke 4).
As can be seen from the magnetic lines in fig. 5-6, after the structure is changed, the magnetic lines are shortened at the joint of the iron core assembly 6 and the magnetic yoke 4, the contact area is increased, and therefore the holding force is maximized.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (3)
1. The utility model provides an expanded permanent magnetism operating mechanism of stroke which characterized in that:
comprises a brake separating cover plate (1), a magnetic cylinder (2), a permanent magnet (3), a magnetic yoke (4), a coil framework combination (5), an iron core combination (6) and a closing cover plate (7),
an iron core combination (6) is arranged at the center of the magnetic cylinder (2), and an opening cover plate (1) and a closing cover plate (7) are respectively arranged at two ends of the magnetic cylinder;
a magnet yoke (4) and a coil framework combination (5) are sequentially arranged on the periphery of the iron core combination (6), and a permanent magnet (3) is arranged between the magnet yoke (4) and the magnetic cylinder (2);
a closing keeping magnetic circuit is formed by the magnetic cylinder (2), the permanent magnet (3), the magnetic yoke (4), the iron core combination (6) and the closing cover plate (7),
and a chamfer is arranged at the assembly position between the iron core combination (6) and the magnetic yoke (4).
2. The permanent magnet actuator of claim 1, wherein: the chamfer angle is 30-60 degrees.
3. The permanent magnet actuator of claim 1, wherein: the chamfer angle is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922409824.5U CN211529867U (en) | 2019-12-28 | 2019-12-28 | Permanent magnet operating mechanism with expandable stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922409824.5U CN211529867U (en) | 2019-12-28 | 2019-12-28 | Permanent magnet operating mechanism with expandable stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211529867U true CN211529867U (en) | 2020-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922409824.5U Active CN211529867U (en) | 2019-12-28 | 2019-12-28 | Permanent magnet operating mechanism with expandable stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211529867U (en) |
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2019
- 2019-12-28 CN CN201922409824.5U patent/CN211529867U/en active Active
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