CN201038609Y - Electromagnetic earthing lock - Google Patents
Electromagnetic earthing lock Download PDFInfo
- Publication number
- CN201038609Y CN201038609Y CNU2007200379780U CN200720037978U CN201038609Y CN 201038609 Y CN201038609 Y CN 201038609Y CN U2007200379780 U CNU2007200379780 U CN U2007200379780U CN 200720037978 U CN200720037978 U CN 200720037978U CN 201038609 Y CN201038609 Y CN 201038609Y
- Authority
- CN
- China
- Prior art keywords
- earth rod
- external screw
- earthing rod
- earthing
- external thread
- 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
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- Manufacturing Of Electrical Connectors (AREA)
Abstract
The utility model relates to an electric device, in particular to an electromagnetic earthing lock used in the process of maintaining the electric device, which comprises a lock body and an earthing rod. Wherein, the lock body is opened with an earthing rod insertion hole for inserting the earthing rod, and one side of the earthing rod insertion hole is provided with a lock tongue controlled by an electromagnetic operation mechanism. The utility model is characterized in that the entrance of the earthing rod insertion hole is provided with an external screw sleeve fixed with the lock casing, and the outer wall of the external screw sleeve is opened with an external screw; moreover, the earthing rod is provided with a raised should, and at the same time, the external screw sleeve is screwed with a nut cooperating with the external screw sleeve; besides, the root of the inner hole of the nut is provided with a step cooperating with the raised shoulder on the earthing rod, and the step presses the raised shoulder. The utility model provides fairly large contact area and stable contact pressure between the earthing rod and the external screw sleeve, thereby promising the earthing reliability.
Description
Technical field
The utility model relates to a kind of electric equipment, specifically is a kind of electromagnetism ground connection lock that is to use in the maintenance of electric device process.
Background technology
Electromagnetism ground connection lock is to be used for equipment is isolated or the personal protector of protecting in the maintenance process of electric equipment.Common electromagnetism ground connection lock generally has an earth rod patchhole for the earth rod insertion on lock body, the dead bolt of stretching, contracting by electromagnetic operating mechanism control is set on the sidewall of earth rod patchhole.When device was in ground state, earth rod inserted the earth rod patchhole, and the dead bolt front end stretches in the draw-in groove on the ground inserting rod, makes earth rod obtain locking.The electromagnetism ground connection of this structure is locked under the ground state, only relies on dead bolt that earth rod is positioned, and barred body is insecure with contacting of lock body, has influenced the ground connection effect.
Summary of the invention
Technical problem to be solved in the utility model provides firm, the reliable electromagnetism ground connection lock of a kind of ground connection.
Electromagnetism ground connection lock of the present utility model includes lock body and earth rod, have an earth rod patchhole on the lock body for the earth rod insertion, one side of earth rod patchhole is provided with the dead bolt by electromagnetic operating mechanism control, it is characterized in that: the porch of earth rod patchhole is provided with an external thread sleeve that is fixed as one with the lock body shell, and the outer wall of external thread sleeve has external screw thread; Earth rod is provided with the crossette of projection, on external thread sleeve, be rotary with simultaneously one with the external thread sleeve nut engaged, the root of nut inner hole is provided with the step that matches with crossette on the above-mentioned earth rod, step is pressed on the crossette.
The porch of described external thread sleeve endoporus also is provided with one section internal conical surface coaxial with the earth rod patchhole; Be provided with one section outer conical surface that cooperates with above-mentioned internal conical surface in the stage casing of earth rod.
The utility model when by dead bolt earth rod being positioned, presses solidly earth rod on external thread sleeve by nut when work, makes earth rod and external screw thread be with bigger contact-making surface and stable contact pressure, has guaranteed the reliability of ground connection.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in the figure, have earth rod patchhole 11 on the lock body 1 of the utility model electromagnetism ground connection lock, earth rod 2 inserts earth rod patchhole 11, and by spacing by the dead bolt 12 of electromagnetic operating mechanism 5 controls, the male cone (strobilus masculinus) 21 in earth rod stage casing matches with inner conical surface 31 on the patchhole porch external thread sleeve 3, be rotary with nut 4 on the external thread sleeve 3, the step 41 of warp, nut 4 endoporus roots is pressed on the crossette 22 of earth rod, and earth rod is securely fixed on the lock body.
Claims (2)
1. an electromagnetism ground connection is locked, include lock body (1) and earth rod (2), have an earth rod patchhole (11) on the lock body for the earth rod insertion, one side of earth rod patchhole is provided with the dead bolt (12) by electromagnetic operating mechanism control, it is characterized in that: the porch of earth rod patchhole is provided with an external thread sleeve that is fixed as one with the lock body shell (3), and the outer wall of external thread sleeve has external screw thread; Earth rod is provided with the crossette (22) of projection, on external thread sleeve (3), be rotary with simultaneously one and external thread sleeve nut engaged (4), the root of nut inner hole is provided with the step (41) that matches with crossette on the above-mentioned earth rod, and step (41) is pressed on the crossette.
2. electromagnetism ground connection lock according to claim 1, it is characterized in that: the porch of external thread sleeve endoporus is provided with one section internal conical surface coaxial with the earth rod patchhole (31); Be provided with one section outer conical surface (21) that cooperates with above-mentioned internal conical surface (31) in the stage casing of earth rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200379780U CN201038609Y (en) | 2007-05-24 | 2007-05-24 | Electromagnetic earthing lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200379780U CN201038609Y (en) | 2007-05-24 | 2007-05-24 | Electromagnetic earthing lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201038609Y true CN201038609Y (en) | 2008-03-19 |
Family
ID=39211133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200379780U Expired - Fee Related CN201038609Y (en) | 2007-05-24 | 2007-05-24 | Electromagnetic earthing lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201038609Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241907A (en) * | 2014-09-24 | 2014-12-24 | 江苏省电力公司南京供电公司 | Grounding device |
| CN104975763A (en) * | 2014-04-09 | 2015-10-14 | 珠海优特电力科技股份有限公司 | Grounding electromagnetic lock |
-
2007
- 2007-05-24 CN CNU2007200379780U patent/CN201038609Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975763A (en) * | 2014-04-09 | 2015-10-14 | 珠海优特电力科技股份有限公司 | Grounding electromagnetic lock |
| CN104975763B (en) * | 2014-04-09 | 2017-09-22 | 珠海优特电力科技股份有限公司 | It is grounded electromagnetic lock |
| CN104241907A (en) * | 2014-09-24 | 2014-12-24 | 江苏省电力公司南京供电公司 | Grounding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20150524 |
|
| EXPY | Termination of patent right or utility model |