AU2017100740A4 - Magnetic steel fixation structure for a high-voltage DC relay having a positioning frame - Google Patents
Magnetic steel fixation structure for a high-voltage DC relay having a positioning frame Download PDFInfo
- Publication number
- AU2017100740A4 AU2017100740A4 AU2017100740A AU2017100740A AU2017100740A4 AU 2017100740 A4 AU2017100740 A4 AU 2017100740A4 AU 2017100740 A AU2017100740 A AU 2017100740A AU 2017100740 A AU2017100740 A AU 2017100740A AU 2017100740 A4 AU2017100740 A4 AU 2017100740A4
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- AU
- Australia
- Prior art keywords
- magnetic steel
- fixed
- yoke
- positioning frame
- insulating hood
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Abstract
TITLE: MAGNETIC STEEL FIXATION STRUCTURE FOR A HIGH-VOLTAGE DC RELAY HAVING A POSITIONING FRAME Abstract A magnetic steel fixation structure for a high-voltage DC relay having a positioning frame, comprising a yoke and an insulating hood fixed on an upper side of the yoke, characterized in that a sealed chamber is formed by the yoke together with the insulating hood; a fixed contact assembly, a moving contact assembly and a positioning plate are fixed within the sealed chamber; pieces of internal magnetic steel are fixed on the positioning plate; the yoke and the insulating hood are enclosed by a shell; the shell comprises a shell body which is of an enclosure structure and is sheathed on a radial outer side of the insulating hood; a piece of external magnetic steel is fixed between the shell body and the insulating hood; and, the height of an upper end face of the external magnetic steel is greater than the height of an upper end face of the pieces of internal magnetic steel; the positioning plate is fixed on an upper side of the yoke; a positioning frame extending upward is formed on the positioning plate; these pieces of internal magnetic steel are fixed within the positioning frame; and, the positioning frame is relatively located on an outer side of the fixed contacts of the fixed contact assembly. 62_ 5 61 61 ------ MI II 42 ||9l!! i
Description
2017100740 15 Jun2017
DESCRIPTION
MAGNETIC STEEL FIXATION STRUCTURE FOR A HIGH-VOLTAGE DC RELAY HAVING A POSITIONING FRAME
Technical Field of the Invention
The present invention relates to a magnetic steel fixation structure for a high-voltage DC relay having a positioning frame.
Background of the Invention A high-voltage DC relay includes a yoke and an insulating hood provided on an upper side of the yoke. A sealed chamber for accommodating a moving contact assembly and a fixed contact assembly is formed by the insulating hood together with the yoke, and a piece of magnetic steel used for blasting is provided within the sealed chamber. Due to the limited volume of the sealed chamber, the magnetic steel cannot be arranged too high, otherwise, during the assembly, the magnetic steel may get into touch with a moving spring reed of a moving contact assembly and the magnetic steel may get into touch with a leading-out terminal and fixed contacts of a fixed contact assembly, and the moving contacts and fixed contacts are very likely to deviate from their set positions. As a result, the moving contacts and the fixed contacts cannot be accurately aligned, and it is also likely cause damage to the magnetic steel, the moving contacts and the fixed contacts.Due to the limited size of the magnetic steel within the sealed chamber, the blast effect is unsatisfactory, it is likely to cause damage to the moving contacts and the fixed contacts, and the service life of a relay is thus reduced. To ensure the blast effect, the volume of the sealed chamber needs to be increased. In doing so, the size of a relay will be increased and the production cost thereof will be thus increased.
Summary of the Invention i 2017100740 15 Jun2017
An objective of the present invention is to provide a magnetic steel fixation structure for a high-voltage DC relay having a positioning frame.
For this purpose, the present invention employs the following technical solutions: a magnetic steel fixation structure for a high-voltage DC relay having a positioning frame is provided, including a yoke and an insulating hood fixed on an upper side of the yoke, characterized in that a sealed chamber is formed by the yoke together with the insulating hood; a fixed contact assembly, a moving contact assembly and a positioning plate are fixed within the sealed chamber; pieces of internal magnetic steel are fixed on the positioning plate; the yoke and the insulating hood are enclosed by a shell; the shell includes a shell body which is of an enclosure structure and is sheathed on a radial outer side of the insulating hood; a piece of external magnetic steel is fixed between the shell body and the insulating hood; and, the height of an upper end face of the external magnetic steel is greater than the height of an upper end face of the pieces of internal magnetic steel; the positioning plate is fixed on an upper side of the yoke; a positioning frame extending upward is formed on the positioning plate; these pieces of internal magnetic steel are fixed within the positioning frame; and, the positioning frame is relatively located on an outer side of the fixed contacts of the fixed contact assembly. This arrangement is used for fixing the pieces of internal magnetic steel, and the shape of the positioning frame is selected as desired.
In the present invention, by providing a piece of external magnetic steel outside the insulating hood, the order of magnitude of blast is increased, the blast effect is enhanced and the height direction of blast is covered. Thus, the damage to the fixed contacts and moving contacts is avoided, and the service life of a relay of the present invention is prolonged.
Brief Description of the Drawings
Fig. 1 is a cross-sectional view of the present invention. 2 2017100740 15 Jun2017
Detailed Description of the Invention
The present invention will be further described below by specific embodiments with reference to the accompanying drawings.
As shown in Fig. 1, the present invention provides a magnetic steel fixation structure for a high-voltage DC relay having a positioning frame, including a yoke 1 and an insulating hood 2 fixed on an upper side of the yoke 1, wherein a sealed chamber 3 is formed by the yoke 1 together with the insulating hood 2, and a fixed contact assembly, a moving contact assembly and a positioning plate 4 are fixed within the sealed chamber 3. The positioning plate 4 extends upward to form two positioning frames 41 which are arranged in opposite, and the positioning frames 41 are relatively located on an outer side of fixed contacts 13 of the fixed contact assembly. An internal magnetic steel placement groove extending inward is formed on an outer wall of each of the positioning frames 41, and a piece of internal magnetic steel 5 is closely fitted within each internal magnetic steel placement groove. The yoke 1 and the insulating hood 2 are enclosed by a shell. The shell includes a pedestal 6. A shell body 61 extending upward and being of an enclosure structure is formed on the pedestal 6. A piece of external magnetic steel 8 is provided between the shell body 61 and a radial outer wall of the insulating hood.
Wherein, the yoke 1 is a yoke cup, and the insulating cover 2 is sintered from ceramics. Threaded structures 11 fitted with each other are formed on the outer wall of the insulating hood 1 and the radial inner wall of the yoke 1. A vertical reinforcing rib is formed on the inner wall of the insulating hood, and the lower end of the reinforcing rib resists against an outer edge of the upper end face of the positioning plate 4 to realize the axial fixation of the positioning plate. A columnar bulge 42 extending downward is formed on the positioning plate 4. The columnar bulge 42 is fitted within a via hole of the yoke 1 to realize the radial limiting of the positioning plate 4. The columnar bulge 42 runs through the positioning plate 4 from top to bottom so that it is convenient to 3 2017100740 15 Jun2017 allow a pushrod 9 to pass therethrough.
Several stoppers 62 extending inward are formed on the shell body 61. An upper cover 7 is fitted on the top of the shell body 61. A positioning block 71 extending downward is formed on the upper cover 7, and lip structures 72 fitted with each other are formed on the upper cover 7 and the shell body 61 of the shell. The upper cover 7 is fitted on the shell, and the positioning block 71 is allowed to extend to the inside of the shell body. A piece of external magnetic steel 8 is fixed on an upper side of the stoppers 62. The shell and the upper cover 7 are assembled such that the lower end of the positioning block 71 resists against the piece of external magnetic steel 8. The piece of external magnetic steel 8 is confined between the stoppers 62 and the positioning block 71.
Wherein, the shell body 61 is arranged annularly. An inner edge of a radial cross-section of the shell body 61 is of a circular structure, and an outer edge of a radial cross-section of the insulating hood 2 is of a circular structure. The several stoppers 42 are annularly arranged at intervals on an inner side of the shell body 61. The piece of external magnetic steel 8 consists of several individual pieces of external magnetic steel, each of which is annular. All the individual pieces of external magnetic steel are cooperated to form a piece of external magnetic steel 8 of a circular structure. An inner wall of the external magnetic steel 8 comes into contact with a radial outer wall of the insulating hood 8, while an outer wall thereof comes into contact with an inner wall of the shell body 61. The axial positioning of the external magnetic steel 8 is realized by the positioning block 71 and the stoppers 62, and the radial limiting and fixation of the external magnetic steel 8 is realized by a gap between the shell body 61 and the outer wall of the insulating hood 2.
The fixed contact assembly includes a leading-out terminal 12 and fixed contacts 13. The leading-out terminal 12 is fixed on the top of the insulating hood 2. The fixed contacts 13 are fixed at a lower end of the leading-out terminal 12. The height of the upper end face of the external magnetic steel 8 4 2017100740 15 Jun2017 is greater than the height of a lower end face of each of the fixed contacts 13. There are two fixed contacts 13 and two pieces of internal magnetic steel 5. The pieces of internal steel 5 are arranged in opposite and located on an outer side of the fixed contacts 13. The two pieces of internal magnetic steel 5 and the two static contacts 13 are located in a same straight line. 5
Claims (2)
- Claims
- 1. A magnetic steel fixation structure for a high-voltage DC relay having a positioning frame, comprising a yoke and an insulating hood fixed on an upper side of the yoke, characterized in that a sealed chamber is formed by the yoke together with the insulating hood; a fixed contact assembly, a moving contact assembly and a positioning plate are fixed within the sealed chamber; pieces of internal magnetic steel are fixed on the positioning plate; the yoke and the insulating hood are enclosed by a shell; the shell comprises a shell body which is of an enclosure structure and is sheathed on a radial outer side of the insulating hood; a piece of external magnetic steel is fixed between the shell body and the insulating hood; and, the height of an upper end face of the external magnetic steel is greater than the height of an upper end face of the pieces of internal magnetic steel; the positioning plate is fixed on an upper side of the yoke; a positioning frame extending upward is formed on the positioning plate; these pieces of internal magnetic steel are fixed within the positioning frame; and, the positioning frame is relatively located on an outer side of the fixed contacts of the fixed contact assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2017100740A AU2017100740A4 (en) | 2017-06-15 | 2017-06-15 | Magnetic steel fixation structure for a high-voltage DC relay having a positioning frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2017100740A AU2017100740A4 (en) | 2017-06-15 | 2017-06-15 | Magnetic steel fixation structure for a high-voltage DC relay having a positioning frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2017100740A4 true AU2017100740A4 (en) | 2017-07-20 |
Family
ID=59335357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2017100740A Ceased AU2017100740A4 (en) | 2017-06-15 | 2017-06-15 | Magnetic steel fixation structure for a high-voltage DC relay having a positioning frame |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2017100740A4 (en) |
-
2017
- 2017-06-15 AU AU2017100740A patent/AU2017100740A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |