Fuse type disconnecting switch capable of rapidly installing arc extinguishing chamber

Abstract

The utility model relates to a fuse type disconnecting switch capable of rapidly installing an arc extinguishing cover, and relates to the technical field of disconnecting switches, the fuse type disconnecting switch comprises a substrate, the arc extinguishing cover is installed on the substrate, the arc extinguishing cover comprises an integrally connected arc extinguishing part, a connecting piece is arranged on the arc extinguishing part, and a plurality of connecting columns are arranged on the connecting piece. Connecting holes with the number corresponding to that of the connecting columns are formed in the base, and the connecting columns extend into the connecting holes and are connected with the connecting holes in a clamped mode. The installation speed of the arc extinguishing chamber can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of disconnecting switch technology, and in particular to a fuse-type disconnecting switch with a quick-installation arc-extinguishing cover. Background Technology

[0002] A fuse-type disconnect switch is a switch that protects electrical equipment through a fuse. This disconnect switch is required to be simple and quick to open and close during use. It is usually used in power transmission and distribution systems. It makes full use of the protection characteristic curve of the fuse to protect the equipment in the power distribution line, and provides a clear disconnection point during maintenance to ensure the personal safety of the staff and protect the safety of the entire circuit.

[0003] In related technologies, the arc-extinguishing chamber inside the fuse-type disconnect switch is installed by a sliding connection. During the installation process, it needs to be smoothly slid along the top of the housing to the designated position, and it is also necessary to ensure that the contact point between the arc-extinguishing chamber and the housing is tight and without gaps. After sliding to the designated position, it is then fixed with bolts, which makes the installation process troublesome. Summary of the Invention

[0004] To improve the installation speed of the arc-extinguishing chamber, this application provides a fuse-type disconnecting switch that allows for quick installation of the arc-extinguishing chamber.

[0005] The technical solution provided in this application for a fuse-type disconnector with a quick-installation arc-extinguishing cover is as follows:

[0006] A fuse-type disconnect switch with a quick-installation arc-extinguishing cover includes a base, an arc-extinguishing cover mounted on the base, the arc-extinguishing cover including an integrally connected arc-extinguishing part, a connecting piece provided on the arc-extinguishing part, a plurality of connecting posts provided on the connecting piece, and connecting holes corresponding to the number of connecting posts on the base, the connecting posts extending into the connecting holes and engaging with the connecting holes.

[0007] By adopting the above technical solution, the arc extinguishing cover can be inserted into the connection hole of the base through the connecting post and snapped into the base, which can effectively improve the installation speed of the arc extinguishing cover.

[0008] Meanwhile, the snap-fit ​​connection between multiple connecting posts and connecting holes can effectively improve the stability of the arc extinguishing cover after installation and effectively prevent the arc extinguishing cover from sliding on the base.

[0009] Optionally, a retaining ring is provided on the inner wall of the connecting hole, and several retaining claws are provided on the connecting post. After the connecting post extends into the connecting hole, the retaining claws engage with the retaining ring.

[0010] By adopting the above technical solution, the claws on the connecting column engage with the retaining rings in the connecting holes to achieve the engagement between the arc extinguishing cover and the substrate.

[0011] Optionally, fixing holes are provided between adjacent connecting columns, and bolt holes corresponding to the positions of the fixing holes are provided on the base, with bolts passing through the fixing holes and bolt holes.

[0012] By adopting the above technical solution, after the arc-extinguishing cover is snapped into place, the arc-extinguishing cover is further fixed to the base by passing bolts through the fixing holes and bolt holes.

[0013] Optionally, the connecting piece has an opening and a deformation hole, both of which are connected to the fixing hole. The connecting piece forms two elastic pieces with the cooperation of the fixing hole, the deformation hole, and the opening, and the connecting post is set on the corresponding elastic piece.

[0014] By adopting the above technical solution, when the fixing hole and the base are fixed by bolts, the inner wall of the bolt abuts against the inner wall of the fixing hole. After the bolts are installed, the two elastic plates separate relative to each other, so that the connecting column abuts against the inner wall of the connecting hole, thereby further increasing the stability and tightness of the arc extinguishing cover after connection.

[0015] Optionally, the arc-extinguishing cover also includes a limiting part integrally connected with the arc-extinguishing part. The outer walls of the limiting part on opposite sides protrude from the outer walls of the arc-extinguishing part on opposite sides. A first locking post is provided on the outer walls of the base on opposite sides. The outer wall of the limiting part on the side closer to the arc-extinguishing part abuts against the side wall of the first locking post.

[0016] By adopting the above technical solution, the contact between the limiting part and the first locking post makes it easy for the user to install the arc extinguishing cover in place, which can effectively improve the installation speed of the arc extinguishing cover.

[0017] Optionally, a notch is provided on the side wall of the limiting part away from the limiting part, a first landslide is provided on one side of the notch, a second locking post is provided on the base, and a second landslide is provided on the second locking post to cooperate with the landslide, and the first landslide and the second landslide abut against each other.

[0018] By adopting the above technical solution, the cooperation between the second locking post and the notch can effectively prevent damage to the arc-extinguishing cover caused by over-installation.

[0019] Optionally, an arc-extinguishing chamber is integrally connected to the arc-extinguishing part, an arc-extinguishing grid is provided on the arc-extinguishing chamber, and several arc-extinguishing plates are provided inside the arc-extinguishing chamber.

[0020] By adopting the above technical solution, the arc extinguishing function of the arc extinguishing shroud is achieved through the arc extinguishing network and arc extinguishing plates on the arc extinguishing chamber.

[0021] Optionally, the connecting piece is provided with reinforcing ribs that connect to the side wall of the arc extinguishing chamber.

[0022] By adopting the above technical solution, the reinforcing rib can effectively improve the connection strength between the connecting plate and the arc extinguishing cover, and prevent the connecting plate from breaking.

[0023] Optionally, the inner wall of the connecting hole is wedge-shaped, and a wedge-shaped ring for the connecting post to pass through is threaded into the connecting hole. The wedge-shaped ring is provided with several elastic locking plates, and the locking plates are provided with locking blocks for tightly adhering to the side wall of the connecting post and engaging with the connecting post.

[0024] By adopting the above technical solution, when the connecting post passes through the connecting hole, only the wedge ring needs to be rotated so that the elastic locking plate and the locking block on the wedge ring abut against the side wall of the connecting post, which can effectively increase the stability after connection and make the operation convenient and quick.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The arc extinguishing cover, through the cooperation of the limiting part with the base, can quickly insert the connecting post into the connecting hole of the base and snap it into the base, which can effectively improve the installation speed of the arc extinguishing cover;

[0027] 2. It can also effectively improve the stability and tightness of the arc extinguishing cover after connection. Attached Figure Description

[0028] Figure 1 This is a top view of the overall structure of Embodiment 1 of this application;

[0029] Figure 2 yes Figure 1 A schematic diagram of a partial cross-sectional view along plane AA;

[0030] Figure 3 This is a schematic diagram of the overall structure of Embodiment 1 of this application, mainly showing the arc-extinguishing shield and the substrate;

[0031] Figure 4 This is a schematic diagram of the overall structure of the arc-extinguishing shield of this application;

[0032] Figure 5 This is a schematic diagram of the overall structure of the base of this application;

[0033] Figure 6 This is a cross-sectional structural diagram of Embodiment 2 of this application, mainly showing the connecting holes.

[0034] Figure Descriptions: 1. Arc-extinguishing cover; 2. Base; 3. Arc-extinguishing part; 301. Arc-extinguishing chamber; 302. Arc-extinguishing grid; 303. Connecting piece; 304. Connecting post; 4. Limiting part; 5. Fixing hole; 6. Deformation hole; 7. Opening; 8. Elastic piece; 9. Reinforcing rib; 10. Bolt hole; 11. Claw; 12. Claw ring; 13. Claw protrusion; 14. Claw groove; 15. First claw post; 16. Second claw post; 17. Guide surface; 18. Notch; 19. First landslide; 20. Second landslide; 21. Wedge ring; 22. Locking piece; 23. Claw block; 24. Connecting hole. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0036] Example 1:

[0037] A fuse-type disconnector with a quick-installation arc-extinguishing cover, as described in the reference. Figure 1 , Figure 2 It includes a base 2, on which an arc-extinguishing cover 1 is installed. Two connecting posts 304 are fixedly connected to the arc-extinguishing cover 1. The two connecting posts 304 are inserted into the base 2 and snapped into the base 2.

[0038] refer to Figure 3 , Figure 4 The arc extinguishing cover 1 includes an arc extinguishing part 3 and a limiting part 4 integrally connected. The limiting part 4 protrudes from the outer walls on opposite sides of the arc extinguishing part 3. An arc extinguishing chamber 301 is integrally connected to the side of the arc extinguishing part 3 away from the base 2. An arc extinguishing grid 302 is provided on the side of the arc extinguishing chamber 301 away from the base 2. Several arc extinguishing plates for arc extinguishing are provided in the arc extinguishing chamber 301.

[0039] A connecting piece 303 is fixedly connected to the side of the arc-extinguishing part 3 away from the limiting part 4. A fixing hole 5 is provided on the connecting piece 303. A deformation hole 6 is provided on the side of the fixing hole 5 near the arc-extinguishing part 3. An opening 7 is provided on the side of the fixing hole 5 away from the arc-extinguishing part 3, penetrating the connecting piece 303. The fixing hole 5, the deformation hole 6, and the opening 7 are connected in sequence, and two elastic pieces 8 are formed on the connecting piece 303.

[0040] refer to Figure 4 , Figure 5 The bottom surface of the base 2 has bolt holes 10 corresponding to the positions of the fixing holes 5, and bolts are inserted into the fixing holes 5 and bolt holes 10, and the connecting piece 303 is fixed to the base 2 by the bolts. At the same time, when the bolt is inserted, the inner wall of the bolt abuts against the inner wall of the fixing hole 5, and the magnitude of the abutment force gradually increases as the bolt is fixed, so that the two elastic pieces 8 are clamped and the bolt is fixed.

[0041] refer to Figure 2 , Figure 4 Both elastic plates 8 are fixedly connected to the connecting post 304 on the side near the base 2, and four claws 11 are fixedly connected to the connecting post 304. Two connecting holes 24 are opened on the bottom surface of the base 2, corresponding to the positions of the connecting post 304. A retaining ring 12 is fixedly connected to the inner wall of the connecting hole 24. After the connecting post 304 passes through the connecting hole 24, the claws 11 engage with the corresponding retaining ring 12.

[0042] refer to Figure 4 One end of a reinforcing rib 9 is fixedly connected to the side of each of the two elastic sheets 8 that are relatively far apart, and the other end of the reinforcing rib 9 is fixedly connected to the side wall of the arc extinguishing part 3.

[0043] refer to Figure 4 , Figure 5 The limiting part 4 has a locking protrusion 13 integrally connected to the outer walls on both sides of the base 2, and a locking groove 14 is provided on the side walls on both sides of the base 2, with the locking protrusion 13 extending into the locking groove 14.

[0044] refer to Figure 3 , Figure 5 The base 2 is fixedly connected to the two inner walls with a first locking post 15. A guide surface 17 is provided on the side of the first locking post 15 away from the bottom surface of the base 2, and the side of the first locking post 15 away from the arc extinguishing part 3 abuts against the side of the limiting part 4 close to the arc extinguishing part 3.

[0045] The limiting part 4 has a notch 18 on the side away from the arc extinguishing part 3, and the side of the notch 18 near the arc extinguishing part 3 is integrally connected to the first landslide 19. The side of the first locking post 15 is integrally connected to the second locking post 16, which is provided on the inner walls of opposite sides of the base 2. The side of the second locking post 16 away from the bottom surface of the base 2 is set as a second landslide 20 parallel to the first landslide 19.

[0046] The implementation principle of this application embodiment is as follows: When the arc-extinguishing cover 1 is connected to the base 2, the side of the limiting part 4 near the arc-extinguishing part 3 abuts against the first locking post 15 and slides along the first locking post 15 towards the side near the base 2. When the first slope 19 of the limiting part 4 abuts against the second slope 20 of the second locking post 16, the connecting post 304 of the arc-extinguishing part 3 extends into the connecting hole 24, and the claw 11 of the connecting post 304 engages with the locking ring 12.

[0047] After the arc-extinguishing cover 1 is installed in place, bolts are passed through the fixing hole 5 and the bolt hole 10 to further fix the arc-extinguishing cover 1 to the base 2. When the bolt passes through the fixing hole 5, the outer wall of the bolt abuts against the inner wall of the fixing hole 5, causing the two elastic plates 8 to shift away from each other, thereby causing the connecting post 304 to abut against the connecting hole 24, increasing the stability and tightness of the arc-extinguishing cover 1.

[0048] Example 2:

[0049] A fuse-type disconnector with a quick-installation arc-extinguishing cover, as described in the reference. Figure 6 The difference from Embodiment 1 is that the inner wall of the connecting hole 24 is wedge-shaped, and the diameter of the circular hole of the connecting hole 24 located on the outer wall of the base 2 is larger than the diameter of the circular hole located on the inner wall of the base 2.

[0050] A wedge-shaped ring 21 is provided inside the connecting hole 24, and four locking plates 22 are integrally connected to the side of the wedge-shaped ring 21 near the connecting piece 303. The outer wall of the locking plate 22 is provided with external threads, and the inner wall of the connecting hole 24 is provided with internal threads. The locking plate 22 is threadedly connected to the connecting hole 24. The locking plate 22 extends into the inner wall of the base 2.

[0051] A locking block 23 is fixedly connected to the inner wall of the locking piece 22. When the connecting post 304 passes through the connecting hole 24, the side of the locking post away from the connecting piece 303 engages with the claw 11, and the side of the locking post away from the locking piece 22 abuts against the side wall of the connecting post 304.

[0052] The implementation principle of this application embodiment is as follows: After the arc extinguishing cover 1 is installed in place, the connecting post 304 passes through the connecting hole 24, and the claw 11 of the connecting post 304 engages with the inner wall of the wedge ring 21. Rotating the wedge ring 21 causes it to slide along the outer wall of the connecting hole 24 towards the inner wall. At this time, the locking piece 22 is pressed against the outer wall of the connecting post 304, and the pressing force gradually increases as the wedge ring 21 rotates. Simultaneously, the locking block 23 further presses against the side wall of the connecting post 304, and when the wedge ring 21 is installed in place, the locking block 23 engages with the claw 11.

[0053] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A fuse-type disconnect switch with a quick-installation arc-extinguishing cover, comprising a base (2), wherein an arc-extinguishing cover (1) is mounted on the base (2), characterized in that: The arc extinguishing cover (1) includes an integrally connected arc extinguishing part (3), a connecting piece (303) is provided on the arc extinguishing part (3), a plurality of connecting posts (304) are provided on the connecting piece (303), and a number of connecting holes (24) corresponding to the number of connecting posts (304) are opened on the base (2). The connecting posts (304) extend into the connecting holes (24) and are engaged with the connecting holes (24).

2. A fuse-type disconnector with a quick-installation arc-extinguishing cover according to claim 1, characterized in that: The inner wall of the connecting hole (24) is provided with a retaining ring (12), and the connecting post (304) is provided with a plurality of retaining claws (11). After the connecting post (304) extends into the connecting hole (24), the retaining claws (11) engage with the retaining ring (12).

3. A fuse-type disconnector with a quick-installation arc-extinguishing cover according to claim 1, characterized in that: A fixing hole (5) is provided between adjacent connecting columns (304), and a bolt hole (10) corresponding to the fixing hole (5) is provided on the base (2), and a bolt is inserted into the fixing hole (5) and the bolt hole (10).

4. A fuse-type disconnector with a quick-installation arc-extinguishing cover as described in claim 3, characterized in that: The connecting piece (303) has an opening (7) and a deformation hole (6), both of which are connected to the fixing hole (5). The connecting piece (303) forms two elastic pieces (8) with the cooperation of the fixing hole (5), the deformation hole (6) and the opening (7). The connecting post (304) is set on the corresponding elastic piece (8).

5. A fuse-type disconnector with a quick-installation arc-extinguishing cover according to claim 1, characterized in that: The arc-extinguishing cover (1) also includes a limiting part (4) integrally connected with the arc-extinguishing part (3). The outer walls of the limiting part (4) on opposite sides protrude from the outer walls of the arc-extinguishing part (3) on opposite sides. The base (2) is provided with a first locking post (15) on opposite side walls. The outer wall of the limiting part (4) near the arc-extinguishing part (3) abuts against the side wall of the first locking post (15).

6. A fuse-type disconnector with a quick-installation arc-extinguishing cover according to claim 5, characterized in that: A notch (18) is provided on the side wall away from the limiting part (4). A first landslide (19) is provided on one side of the notch (18). A second locking post (16) is provided on the base (2). A second landslide (20) is provided on the second locking post (16) to cooperate with the landslide. The first landslide (19) and the second landslide (20) abut against each other.

7. A fuse-type disconnector with a quick-installation arc-extinguishing cover according to claim 1, characterized in that: An arc-extinguishing chamber (301) is integrally connected to the arc-extinguishing part (3), an arc-extinguishing grid (302) is provided on the arc-extinguishing chamber (301), and a plurality of arc-extinguishing plates are provided inside the arc-extinguishing chamber (301).

8. A fuse-type disconnector with a quick-installation arc-extinguishing cover according to claim 1, characterized in that: The connecting piece (303) is provided with a reinforcing rib (9) that is connected to the side wall of the arc extinguishing cover (1).

9. A fuse-type disconnector with a quick-installation arc-extinguishing cover according to claim 1, characterized in that: The inner wall of the connecting hole (24) is wedge-shaped. The connecting hole (24) is threaded with a wedge-shaped ring (21) for the connecting post (304) to pass through. The wedge-shaped ring (21) is provided with a plurality of elastic locking pieces (22). The locking pieces (22) are provided with locking blocks (23) for tightly adhering to the side wall of the connecting post (304) and engaging with the connecting post (304).

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