CN201146083Y - Low-voltage insulator - Google Patents
Low-voltage insulator Download PDFInfo
- Publication number
- CN201146083Y CN201146083Y CNU2007201960600U CN200720196060U CN201146083Y CN 201146083 Y CN201146083 Y CN 201146083Y CN U2007201960600 U CNU2007201960600 U CN U2007201960600U CN 200720196060 U CN200720196060 U CN 200720196060U CN 201146083 Y CN201146083 Y CN 201146083Y
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- China
- Prior art keywords
- vertical edge
- screw
- head
- low voltage
- voltage insulator
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- Expired - Lifetime
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Abstract
The utility model relates to a low voltage insulator, which provides the low voltage insulator for solving the problems that at present, the installation of the low voltage insulator is inconvenient and restricted due to the requirement of the increment of the diameter of an insulation sleeve as the electric clearance is improved by the low voltage insulator. The low voltage insulator comprises a screw and an insulation sleeve; the screw is sheathed in the insulation sleeve; the insulation sleeve is provided with a cylindrical vertical edge which surrounds the head of the screw; the head of the screw is arranged in a receiving space which is formed by the cylindrical vertical edge. The low voltage insulator of the utility model blocks the head of the screw and the copper bar by arranging the cylindrical vertical edge which surrounds the head of the screw rather than by increasing the diameter of the insulation sleeve, the electric clearance is enlarged, and the dimension of the whole low voltage insulator is less increased, and the application installation of the low voltage insulator is convenient. Meanwhile, the cylindrical vertical edge can effectively prevent the head of the screw from being contacted with other conductors and have better isolation effect.
Description
Technical field
The utility model relates to a kind of insulator, more particularly, relates to a kind of low tension insulator.
Background technology
In electric cabinet, low tension insulator is commonly used to fixedly mount copper bar, and copper bar is fixed, and does not produce with rack again simultaneously to be electrically connected.In existing low tension insulator, all comprise insulating case 12, screw 11, insulated column 14, as shown in Figure 1, screw 11 sleeves are in insulating case, wherein the head of screw 11 exposes, and the electric clearance that the low tension insulator of this structure will strengthen 13 of screw head and copper bars has only by the radius of the cephalic par that increases insulating case 12 to be realized.But in actual application, the diameter that increases the insulating case cephalic par is infeasible often, because there are not enough spaces to hold the insulating case of major diameter cephalic par.Therefore, often there is the contradiction that insulating case minor diameter and big electric clearance can not get both in existing insulator.In addition, exposed head of screw also might contact with other electric conductor, causes dangerous.
The utility model content
The technical problems to be solved in the utility model is, improve electric clearance at existing low tension insulator and need increase insulating case cephalic par diameter and cause installing inconvenient, restricted problem, and a kind of low tension insulator that insulating case cephalic par diameter just can increase creepage distance and electric clearance that do not need to increase is provided.
The technical scheme that its technical problem that solves the utility model adopts is: propose a kind of low tension insulator, comprise screw, insulating case, described screw suit is in insulating case, the cephalic par of described insulating case is provided with the tubular vertical edge around screw head, and the head of described screw is contained in the spatial accommodation that described tubular vertical edge constituted.During application, the tubular vertical edge of insulating case can play good iris action between screw head and copper bar, electric clearance also obtains increasing, but does not increase the diameter of insulating case cephalic par, it is few that the occupied space of low tension insulator is increased, and makes things convenient for the application of low tension insulator to install.
In low tension insulator described in the utility model, described insulating lid is installed in the opening part of the spatial accommodation that described tubular vertical edge constituted.The spatial accommodation of an insulating lid and a sealing of insulating case formation is used to hold the head of screw, the head that makes screw is an isolation, this has not only increased electric clearance, and can prevent that other electric conductor from contacting with screw head, plays better isolated insulation effect.
In low tension insulator described in the utility model, described insulating lid comprises cover plate, vertical with cover plate and match with the tubular vertical edge and to form the Plug Division of pegging graft.The Plug Division makes described insulating lid can be fixedly mounted on the opening part of the spatial accommodation that described tubular vertical edge constituted.
In low tension insulator described in the utility model, described plugging position is in the inboard of tubular vertical edge, and the medial surface of the outside wall surface of Plug Division and tubular vertical edge closely cooperates.
In low tension insulator described in the utility model, described plugging position is in the outside of tubular vertical edge, and the lateral surface of the internal face of Plug Division and tubular vertical edge closely cooperates.
Low tension insulator in the utility model has following advantage compared with prior art:
1, the low tension insulator in the utility model intercepts screw head and copper bar by setting up around the tubular vertical edge of screw head rather than the diameter of increase insulating case, electric clearance is amplified and the size of whole low tension insulator increases seldom, make things convenient for the application installation of low tension insulator.
2, screw head is positioned at the enclosure space that is made of tubular vertical edge and insulating lid, makes it with outside isolated, can prevent that screw head from contacting with other electric conductors, plays better buffer action.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of existing low tension insulator;
Fig. 2 is the structural representation of the utility model mesolow insulator.
Embodiment
Fig. 2 shows a more excellent execution mode of the present utility model.
See also shown in Figure 2, low tension insulator comprises that insulating lid 25, screw 21, insulating case 22 and insulated column 24 constitute, during application, insulating case 22 sleeves are in the installing hole of copper bar 23, other side at copper bar 23, insulated column 24 entangles the part that insulating case 22 passes copper bar, and screw 21 runs through insulating case 22 and insulated column 24 backs again and is connected with rack or other bearing carrier, thereby copper bar 23 is fixed and it is not electrically connected with rack or bearing carrier.The improvement that the utility model low tension insulator is done is mainly at the cephalic par of insulating case 22, is provided with tubular vertical edge 26 around screw head at the cephalic par of insulating case 22, and insulating lid 25 covers on vertical edge.Insulating lid 25 is made of the Plug Division 28 of cover plate 27 and vertical cover plate, Plug Division 28 is positioned at the inboard of tubular vertical edge 26, the medial surface of the outside wall surface of Plug Division 28 and tubular vertical edge 26 closely cooperates, insulating lid 25 forms the head that a close cavity is held screw 21 with insulating case 22, the head that makes screw 21 is with outside isolated, thereby played good iris action between the head of screw 21 and copper bar 23.Electric clearance can amplify much in this way, and the space that whole low tension insulator accounts for increase is few, and practicality improves greatly; The head of screw can not contact with other electric conductor yet in addition, can play better buffer action.In the specific implementation, Plug Division 28 also can be sleeved on the outside of tubular vertical edge 26.
Claims (5)
1, a kind of low tension insulator, comprise screw, insulating case, described screw suit is characterized in that in insulating case: described insulating case cephalic par is provided with the tubular vertical edge around screw head, and the head of described screw is contained in the spatial accommodation that described tubular vertical edge constituted.
2, low tension insulator according to claim 1 is characterized in that: also comprise insulating lid, described insulating lid is installed in the opening part of the spatial accommodation that described tubular vertical edge constituted.
3, low tension insulator according to claim 2 is characterized in that: described insulating lid comprises cover plate, vertical with cover plate and match with the tubular vertical edge and to form the Plug Division of pegging graft.
4, low tension insulator according to claim 3 is characterized in that: described plugging position is in the inboard of tubular vertical edge, and the medial surface of the outside wall surface of Plug Division and tubular vertical edge closely cooperates.
5, low tension insulator according to claim 3 is characterized in that: described plugging position is in the outside of tubular vertical edge, and the lateral surface of the internal face of Plug Division and tubular vertical edge closely cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201960600U CN201146083Y (en) | 2007-12-14 | 2007-12-14 | Low-voltage insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201960600U CN201146083Y (en) | 2007-12-14 | 2007-12-14 | Low-voltage insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201146083Y true CN201146083Y (en) | 2008-11-05 |
Family
ID=40082967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201960600U Expired - Lifetime CN201146083Y (en) | 2007-12-14 | 2007-12-14 | Low-voltage insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201146083Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157378A (en) * | 2014-08-18 | 2014-11-19 | 国家电网公司 | Composite wiring insulation bottle |
-
2007
- 2007-12-14 CN CNU2007201960600U patent/CN201146083Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157378A (en) * | 2014-08-18 | 2014-11-19 | 国家电网公司 | Composite wiring insulation bottle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081105 |