CN213691946U - A fuse insulation shield - Google Patents
A fuse insulation shield Download PDFInfo
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- CN213691946U CN213691946U CN202022391442.7U CN202022391442U CN213691946U CN 213691946 U CN213691946 U CN 213691946U CN 202022391442 U CN202022391442 U CN 202022391442U CN 213691946 U CN213691946 U CN 213691946U
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- shield
- fuse tube
- movable contact
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Abstract
本实用新型提供一种熔断器绝缘护罩，包括由软弹性绝缘材料制成的上护罩和下护罩，上护罩安装于熔断器上端，下护罩安装于熔断器下端，上护罩包括进线连接部、上动触头容置部及与绝缘子上端配合的第一圆形罩部，第一圆形罩部和上动触头容置部之间通过第一支架容置部连通，上动触头容置部远离第一支架容置部的一侧设有便于熔丝管转动的容置通道，容置通道的外侧设有阻止熔丝管转出容置通道的限位板，在熔丝管在弹簧片和自身重力作用下沿着容置通道转动时，限位板限制熔丝管的位置，使得熔断器可以保证断开电路的同时，断开后的熔丝管上端保持位于容置通道内，受到上护罩的遮蔽，避免漏电的隐患。
The utility model provides an insulating shield for a fuse, comprising an upper shield and a lower shield made of soft elastic insulating materials, the upper shield is installed on the upper end of the fuse, the lower shield is installed on the lower end of the fuse, and the upper shield It includes an incoming line connection part, an upper movable contact accommodating part and a first circular cover part matched with the upper end of the insulator, and the first circular hood part and the upper movable contact accommodating part are communicated through the first bracket accommodating part , the side of the upper movable contact accommodating portion away from the accommodating portion of the first bracket is provided with an accommodating channel that facilitates the rotation of the fuse tube, and the outer side of the accommodating channel is provided with a limit plate that prevents the fuse tube from rotating out of the accommodating channel , when the fuse tube rotates along the accommodating channel under the action of the spring sheet and its own gravity, the limit plate restricts the position of the fuse tube, so that the fuse can ensure that the circuit is disconnected, and the upper end of the disconnected fuse tube Keep it in the accommodating channel and be shielded by the upper shield to avoid the hidden danger of electric leakage.
Description
Technical Field
The utility model relates to a fuse technical field especially relates to an insulating guard shield of fuse.
Background
The drop-out fuse is a short-circuit protection switch most commonly used by a 10kV distribution line branch line and a distribution transformer, is arranged on the 10kV distribution line branch line, can reduce the power failure range, has the function of an isolating switch due to the fact that the drop-out fuse has an obvious disconnection point, creates a safe operation environment for a maintenance section line and equipment, and increases the safety of maintenance personnel.
Both ends of the drop-out fuse are provided with conductive parts exposed in the air, and operation accidents are easy to happen under the threat of external force (air drifter, kite, town tree branch) and the like, so that the safe operation of the power grid is greatly influenced. Some current drop out fuses play the effect of protection to both ends through installing insulating guard shield at both ends, but when the fuse tube disconnection, the insulating guard shield is rolled out to the upper end of fuse tube, and the upper end of fuse tube exposes in the air always before the maintainer arrives, has the electric leakage risk.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an insulating guard shield of fuse solves the electric leakage risk when the fuse tube breaks off.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an insulating guard shield of fuse, the fuse includes fuse tube and insulator, the upper end of fuse tube is equipped with the moving contact, the insulating guard shield of fuse includes last guard shield and lower guard shield of being made by soft elastic insulating material, it installs in the fuse upper end to go up the guard shield, lower guard shield is installed in the fuse lower extreme, it includes the inlet wire connecting portion to go up the guard shield, go up the moving contact holding portion and with the first circular cover portion of insulator upper end complex, communicate through first support holding portion between first circular cover portion and the last moving contact holding portion, one side that first support holding portion was kept away from to last moving contact holding portion is equipped with the fuse tube pivoted holding passageway of being convenient for, the outside of holding passageway is equipped with the limiting plate.
Furthermore, the outside of holding passageway is equipped with the opening, and the limiting plate is equipped with two and is located the open-ended left and right sides respectively, and the distance between two limiting plates is less than the diameter of fuse tube upper end.
Furthermore, the outside of holding passageway is equipped with the opening, and the limiting plate is located the open-ended top, and when the fuse tube rotated the opening part, the limiting plate prevented the fuse tube upper end and passed through.
Furthermore, an operating ring is arranged on the fuse tube, an operating ring accommodating portion used for accommodating the operating ring is arranged below the upper moving contact accommodating portion, the operating ring accommodating portion is communicated with the accommodating channel, the width of the operating ring accommodating portion is larger than that of the upper moving contact accommodating portion, and the width of the operating ring accommodating portion is gradually increased along the direction close to the accommodating channel.
Furthermore, a first convex edge used for pressing the side wall of the upper end of the insulator is arranged on the inner wall of the first circular cover part.
Further, go up the integrative injection moulding setting of guard shield, go up still to establish the mounting groove that the guard shield was gone into to fuse upper end card on the guard shield.
Furthermore, the two ends of the mounting groove are provided with connecting plates, the connecting plates are provided with connecting holes, and bolts penetrate through the connecting holes in the two connecting plates to connect the two connecting plates into a whole.
Furthermore, the lower end of the fuse tube is provided with a lower moving contact, the lower protective cover comprises an outgoing line connecting part, a lower moving contact accommodating part and a second circular cover part matched with the lower end of the insulator, and the second circular cover part is communicated with the lower moving contact accommodating part through a second support accommodating part.
Furthermore, a second convex edge used for pressing the side wall of the lower end of the insulator is arranged on the inner wall of the second circular cover part.
After the technical scheme is adopted, the utility model has the advantages of as follows:
1. through setting up holding passageway and limiting plate, when the last moving contact of fuse tube upper end and the connection of the last static contact of insulator upper end are separated, the fuse tube rotates along the holding passageway under spring leaf and self action of gravity, and the position of limiting plate restriction fuse tube, make the upper end of fuse tube keep in the holding passageway, when making the fuse can guarantee the open circuit, the fuse tube upper end after the disconnection keeps being located the holding passageway, receive shielding of last guard shield, avoid the hidden danger of electric leakage, make the use of fuse safer.
2. Through setting up the diameter that is less than fuse tube upper end apart from between two limiting plates, guarantee that the fuse tube can be blockked by the limiting plate, simultaneously because of last guard shield is made by soft elastic insulating material, the operation personnel can make the fuse tube fall from the opening through breaking the limiting plate off with the fingers and thumb when the maintenance, the inspection maintenance of the fuse of being convenient for.
3. Through setting up the limiting plate in the open-ended top, also can play spacing effect to the rotation of fuse tube.
4. The width through setting up the operation ring holding portion is greater than the width of last moving contact holding portion, the holding of the operating ring of being convenient for, and the direction width that the operating ring holding portion is close to the holding passageway increases gradually for the operating ring holding portion can not cause the interference to the operating ring, guarantees the normal rotation of fuse tube.
5. Through setting up first bead, do not have the clearance between the inner wall of first bead and first circular cover portion, increase the friction between first circular cover portion and the insulator, can guarantee to go up the complex stability between guard shield and the insulator.
6. Go up the integrative injection moulding of guard shield and set up for processing is more convenient, does not have joint gap between the part simultaneously, guarantees to go up the guard shield to the effect of shielding of fuse upper end, goes up to be equipped with the mounting groove on the guard shield, because of last guard shield is made by soft elastic insulating material, the upper end of fuse can go into the guard shield through the mounting groove card, makes the installation of going up the guard shield more convenient.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is the structure schematic diagram of the insulating guard shield of fuse of the utility model.
Fig. 2 is a schematic structural view of the upper shield in the insulating shield of the fuse of the present invention.
Figure 3 is a side view of the upper shield of the insulated shield of the fuse of the present invention.
Fig. 4 is a top view of the upper shield in the insulating shield of the fuse of the present invention.
Fig. 5 is a schematic structural view of the lower shield in the insulating shield of the fuse of the present invention.
The names of the components marked in the figures are as follows:
100. an upper shield; 110. a wire inlet connecting part; 120. an upper moving contact accommodating part; 130. a first circular cover portion; 131. a first rib; 140. a first rack receiving portion; 150. an accommodating channel; 151. a limiting plate; 152. An opening; 160. mounting grooves; 161. a connecting plate; 162. connecting holes; 170. an operating ring receptacle; 200. a lower shield; 210. an outgoing line connecting part; 220. a lower moving contact accommodating part; 230. a second circular cover portion; 240. A second stent receiving portion.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.
As shown in fig. 1 to 5, the utility model provides an insulating protective cover for a fuse, the fuse includes a fuse tube and an insulator, an upper moving contact is arranged at the upper end of the fuse tube, a lower moving contact is arranged at the lower end of the fuse tube, the insulating protective cover for the fuse includes an upper protective cover 100 and a lower protective cover 200 made of soft elastic insulating material, the upper protective cover 100 is arranged at the upper end of the fuse, the lower protective cover 200 is arranged at the lower end of the fuse, the upper protective cover 100 includes an incoming line connecting part 110, an upper moving contact accommodating part 120 and a first circular cover part 130 matched with the upper end of the insulator, the first circular cover part 130 and the upper moving contact accommodating part 120 are communicated through a first support accommodating part 140, an accommodating passage 150 convenient for the rotation of the fuse tube is arranged at one side of the upper moving contact accommodating part 120 far away from the first support accommodating part 140, a, through setting up holding passageway and limiting plate, when the last moving contact of fuse tube upper end and the connection of the last static contact of insulator upper end are separated, the fuse tube rotates along the holding passageway under spring leaf and self action of gravity, and the position of limiting plate restriction fuse tube, make the upper end of fuse tube keep in the holding passageway, when making the fuse can guarantee the open circuit, the fuse tube upper end after the disconnection keeps being located the holding passageway, receive shielding of last guard shield, avoid the hidden danger of electric leakage, make the use of fuse safer.
In this embodiment, the outside of holding passageway 150 is equipped with opening 152, and limiting plate 151 is equipped with two and is located the left and right sides of opening 152 respectively, and the distance between two limiting plates 151 is less than the diameter of fuse tube upper end, guarantees that the fuse tube can be blockked by the limiting plate, simultaneously because of last guard shield is made by soft elastic insulation material, and the operation personnel can make the fuse tube fall from the opening through breaking the limiting plate off with the fingers and thumb when the maintenance, the inspection maintenance of the fuse of being convenient for.
It can be understood that the limiting plate can be only provided with one, and the limiting plate is located the open-ended top, and when the fuse tube rotated the opening part, the limiting plate restriction fuse tube upper end passed through, played spacing effect to the rotation of fuse tube.
Be equipped with the operating ring on the fuse tube, can realize the restoration of fuse tube through the operating ring, go up guard shield 100 for guaranteeing to shield the fuse upper end, be equipped with the operating ring holding portion 170 that is used for holding the operating ring in the below of last moving contact holding portion 120, operating ring holding portion 170 and holding passageway 150 intercommunication, the width of operating ring holding portion 170 is greater than the width of last moving contact holding portion 120, the holding of the operating ring of being convenient for, and the width of operating ring holding portion 170 increases along the direction that is close to holding passageway 150 gradually, make the operating ring holding portion can not cause the interference to the operating ring, guarantee the normal rotation of fuse tube.
The inner wall of the first circular cover part 130 is provided with a first rib 131 used for compressing the side wall of the upper end of the insulator, no gap exists between the first rib 131 and the inner wall of the first circular cover part 130, friction between the first circular cover part and the insulator is increased, and stability of matching between the upper shield and the insulator can be guaranteed.
Go up the integrative injection moulding setting of guard shield 100 for processing is more convenient, does not have the joint gap between the part simultaneously, guarantees to go up the guard shield effect to the fuse upper end, goes up to be equipped with mounting groove 160 on the guard shield 100, because of last guard shield is made by soft elastic insulating material, the upper end of fuse can go into guard shield 100 through mounting groove 160 card, makes the installation of going up the guard shield more convenient.
The both ends of mounting groove 160 all are equipped with connecting plate 161, are equipped with connecting hole 162 on the connecting plate 161, and the bolt passes the connecting hole on two connecting plates in proper order and links into an integrated entity with two connecting plates, realizes the closure of mounting groove.
The lower guard 200 includes a wire outlet connection portion 210, a lower moving contact accommodating portion 220, and a second circular cover portion 230 engaged with the lower end of the insulator, wherein the second circular cover portion 230 and the lower moving contact accommodating portion 220 are communicated with each other through a second bracket accommodating portion 240.
The inner wall of the second circular cover part 230 is provided with a second rib for compressing the side wall of the lower end of the insulator, no gap exists between the second rib and the inner wall of the second circular cover part, friction between the second circular cover part and the insulator is increased, and stability of matching between the lower shield and the insulator can be guaranteed.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022391442.7U CN213691946U (en) | 2020-10-23 | 2020-10-23 | A fuse insulation shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022391442.7U CN213691946U (en) | 2020-10-23 | 2020-10-23 | A fuse insulation shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213691946U true CN213691946U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022391442.7U Active CN213691946U (en) | 2020-10-23 | 2020-10-23 | A fuse insulation shield |
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| Country | Link |
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| CN (1) | CN213691946U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115206745A (en) * | 2022-07-26 | 2022-10-18 | 文世彬 | Insulating cover that shields of fuse |
| CN115394616A (en) * | 2022-08-12 | 2022-11-25 | 绍兴电力局用电管理所 | Drop out fuse static contact insulation protection device capable of being installed in electrified mode |
| CN115799018A (en) * | 2022-11-28 | 2023-03-14 | 国网浙江省电力有限公司杭州市临安区供电公司 | Insulating guard shield of fuse |
-
2020
- 2020-10-23 CN CN202022391442.7U patent/CN213691946U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115206745A (en) * | 2022-07-26 | 2022-10-18 | 文世彬 | Insulating cover that shields of fuse |
| CN115394616A (en) * | 2022-08-12 | 2022-11-25 | 绍兴电力局用电管理所 | Drop out fuse static contact insulation protection device capable of being installed in electrified mode |
| CN115799018A (en) * | 2022-11-28 | 2023-03-14 | 国网浙江省电力有限公司杭州市临安区供电公司 | Insulating guard shield of fuse |
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