Arc extinguishing chamber mechanism of fuse type disconnecting switch

Abstract

The utility model discloses an arc extinguishing chamber mechanism of a fuse type disconnecting switch, which structurally comprises an upper cover, a lower cover and a fuse assembly, the upper cover is rotatably connected with the lower cover, the fuse assembly is arranged in the upper cover, the lower cover comprises a first splicing part and a second splicing part, the first splicing part and the second splicing part are spliced to form an accommodating cavity, and the accommodating cavity is arranged in the accommodating cavity. An upper contact and a lower contact are arranged in the accommodating cavity, a first assembly section for accommodating the arc extinguishing cover is formed in the accommodating cavity above the upper contact, a second assembly section for accommodating the arc extinguishing partition plate is formed on one side of the accommodating cavity, and the arc extinguishing partition plate is detachably arranged in the second assembly section through a locking piece; the arc extinguishing partition plate is locked or unlocked through the locking piece, the arc extinguishing partition plate can be assembled and disassembled without disassembling the lower cover, the assembling procedure of the arc extinguishing partition plate is simplified, and daily maintenance and replacement of the arc extinguishing partition plate are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, and more specifically, to an arc extinguishing cover mechanism of a fuse-type isolating switch. Background Art

[0002] A fuse-type disconnector is a switch that protects electrical equipment through a fuse. The disconnector requires simple and rapid opening and closing during use. It is usually used in power transmission and distribution systems, making full use of the protection characteristic curve of the fuse to protect the equipment in the distribution line and provide an obvious disconnection point during maintenance to ensure the personal safety of the staff and the safety of the entire circuit.

[0003] The existing fuse-type disconnector comprises an upper cover, a lower cover, an arc extinguishing hood and a fuse group. The upper cover is rotatably connected to the lower cover, the fuse group is installed in the upper cover, the lower cover comprises a left joint part and a right joint part, the left joint part and the right joint part are combined to form a chamber for accommodating an upper contact and a lower contact, the arc extinguishing hood is located above the upper contact and an arc extinguishing clapboard is arranged on one side; during actual assembly, the arc extinguishing clapboard is fixedly limited to a preset position by the joint between the left joint part and the right joint part, but the above-mentioned installation method makes the assembly process of the arc extinguishing clapboard more complicated, and the maintenance and replacement of the arc extinguishing clapboard require the disassembly of the lower cover, and the overall practicality is poor. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an arc extinguishing cover mechanism for a fuse-type disconnector to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an arc extinguishing cover mechanism of a fuse-type isolating switch, comprising an upper cover, a lower cover and a fuse assembly, the upper cover is rotatably connected to the lower cover, the fuse assembly is installed in the upper cover, the lower cover comprises a first splicing part and a second splicing part, the first splicing part and the second splicing part are spliced ​​together to form a accommodating chamber, an upper contact and a lower contact are arranged in the accommodating chamber, the accommodating chamber is located above the upper contact and is formed with a first assembly section for accommodating the arc extinguishing cover, a second assembly section for accommodating an arc extinguishing clapboard is formed on one side of the accommodating chamber, and the arc extinguishing clapboard is detachably arranged in the second assembly section through a locking member.

[0006] The utility model is further configured as follows: the locking piece is fixedly mounted on the side of the arc extinguishing baffle away from the accommodating cavity and is formed with two first limiting grooves, and the first splicing part and the second splicing part are located at the second assembly interval and are provided with second limiting grooves adapted to the two first limiting grooves.

[0007] The utility model is further configured as follows: a matching oblique waist is provided on the outer side of the second limiting groove.

[0008] The utility model is further configured as follows: the arc extinguishing chute is provided with a first fastening hole, the locking member is provided with a second fastening hole at a position corresponding to the first fastening hole, and the arc extinguishing chute is connected with a fastener adapted to the first fastening hole and the second fastening hole.

[0009] The utility model is further configured as follows: two force-carrying parts are correspondingly formed on the outer side of the locking piece, and a reinforcing plate is further arranged between the force-carrying part and the fastener body.

[0010] The utility model is further configured as follows: the arc extinguishing clapboard array is provided with a plurality of heat dissipation through holes.

[0011] The utility model is further configured as follows: a clamping portion is formed on the top of the arc extinguishing cover, and a clamping tooth matched with the clamping portion is formed on the top of the arc extinguishing chute.

[0012] In summary, the utility model has the following beneficial effects: the utility model locks or unlocks the arc chute through a locking piece, and the arc chute can be loaded and unloaded without disassembling the lower cover, which simplifies the assembly process of the arc chute and facilitates daily maintenance and replacement of the arc chute. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the lower cover of the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of the first splicing part of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the arc-extinguishing chute and the locking member of the utility model.

[0018] Figure numerals: 1. upper cover; 10. lower cover; 11. first joint part; 12. second joint part; 13. accommodating cavity; 14. upper contact; 15. lower contact; 2. first assembly section; 20. arc extinguishing cover; 21. clamping part; 22. clamping teeth; 3. second assembly section; 30. arc extinguishing baffle; 31. first fastening hole; 32. second fastening hole; 33. fastener; 34. heat dissipation through hole; 4. locking member; 40. first limiting groove; 41. second limiting groove; 42. matching oblique waist; 43. force part; 44. reinforcing plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 As shown, an arc extinguishing cover 20 mechanism of a fuse-type disconnector in an embodiment of the utility model includes an upper cover 1, a lower cover 10 and a fuse assembly. The upper cover 1 is rotatably connected to the lower cover 10, and the fuse assembly is installed in the upper cover 1. The lower cover 10 includes a first splicing portion 11 and a second splicing portion 12. The first splicing portion 11 and the second splicing portion 12 are spliced ​​together to form a accommodating cavity 13. An upper contact 14 and a lower contact 15 are provided in the accommodating cavity 13. The accommodating cavity 13 is located above the upper contact 14 and is formed with a first assembly section 2 for accommodating the arc extinguishing cover 20. A second assembly section 3 for accommodating an arc extinguishing clapboard 30 is formed on one side of the accommodating cavity 13. The arc extinguishing clapboard 30 is detachably arranged in the second assembly section 3 through a locking member 4.

[0021] When in use, the arc chute 30 is first installed, and the arc chute 30 is extended into the second assembly interval 3 from the left opening of the lower cover 10 while maintaining an inclined posture. During the extension process, the upper end of the arc chute 30 extends out of the second assembly interval 3 and slowly returns to the original position. The arc chute 30 is completely returned to the original position and reaches the preset installation position. Then, the locking member 4 is installed to lock and limit the arc chute 30, and finally, the arc chute 20 is installed to complete the assembly of the arc chute 20 mechanism.

[0022] The utility model locks or unlocks the arc chute 30 through the locking member 4. The arc chute 30 can be loaded and unloaded without disassembling the lower cover 10, which simplifies the assembly process of the arc chute 30 and facilitates the daily maintenance and replacement of the arc chute 30.

[0023] The locking piece 4 is fixedly mounted on the side of the arc-extinguishing chopper 30 away from the accommodating cavity 13 and is formed with two first limiting grooves 40. The first splicing portion 11 and the second splicing portion 12 are located in the second assembly interval 3 and are provided with a second limiting groove 41 adapted to the two first limiting grooves 40; a matching oblique waist 42 is provided on the outer side of the second limiting groove 41; the arc-extinguishing chopper 30 is provided with a first fastening hole 31, and the locking piece 4 is located at a position corresponding to the first fastening hole 31 and is provided with a second fastening hole 32; the arc-extinguishing chopper 30 is connected with a fastener 33 adapted to the first fastening hole 31 and the second fastening hole 32.

[0024] When in use, after the arc extinguishing partition 30 is installed in place, the locking member 4 is installed to lock and limit the arc extinguishing partition. Specifically, the locking member 4 maintains an inclined posture and extends into the left opening of the lower cover 10 and causes one of the first limiting grooves 40 to enter one of the second limiting grooves 41, and then the locking member 4 returns to the right position and causes another first limiting groove 40 to enter another second limiting groove 41. At this time, the locking member 4 reaches the specified position;

[0025] By providing the matching oblique waist 42, the locking member 4 can more smoothly enter and exit the two second limiting grooves 41;

[0026] After the locking member 4 reaches the specified position, the fastener 33 (a fastening workpiece such as a rivet or screw) is passed through the first fastening hole 31 and the second fastening hole 32 to connect and fix the locking member 4 to the arc isolation plate. The locking and limiting of the arc isolation plate is achieved through the fastening cooperation of the fastener 33 and the cooperation between the first limiting groove 40 and the second limiting groove 41.

[0027] Two force-reinforcing parts 43 are correspondingly formed on the outer side of the locking member 4 , and a reinforcing plate 44 is arranged between the force-reinforcing part 43 and the main body of the fastener 33 .

[0028] When in use, the force-carrying portion 43 provides a stable force-carrying point for the assembly and disassembly of the locking member 4 , and the overall strength of the force-carrying portion 43 is improved by providing the reinforcing plate 44 .

[0029] The arc extinguishing chute 30 array is provided with a plurality of heat dissipation holes 34 .

[0030] When in use, the heat dissipation through holes 34 are provided to improve the interaction of air inside and outside the accommodating cavity 13, thereby ensuring the heat dissipation effect.

[0031] A clamping portion 21 is formed on the top of the arc extinguishing cover 20 , and a clamping tooth 22 matched with the clamping portion 21 is formed on the top of the arc extinguishing chute 30 .

[0032] When in use, after the locking piece 4 is installed in place to lock the arc extinguishing cleft 30, the arc extinguishing cover 20 is inserted into the first assembly recess. When the arc extinguishing cover 20 is installed in place, the latching tooth 22 enters the clamping portion 21 of the arc extinguishing cover 20. The top of the arc extinguishing cleft 30 is limited by the limiting cooperation between the clamping portion 21 and the latching tooth 22, thereby further improving the installation stability of the arc extinguishing cleft 30.

[0033] It should also be pointed out that the terms used in the present invention, such as “front”, “rear”, “vertical”, “horizontal”, etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0034] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An arc extinguishing cover mechanism of a fuse-type disconnector, comprising an upper cover (1), a lower cover (10) and a fuse assembly, wherein the upper cover (1) is rotatably connected to the lower cover (10), and the fuse assembly is installed in the upper cover (1), characterized in that: The lower cover (10) comprises a first splicing portion (11) and a second splicing portion (12), wherein the first splicing portion (11) and the second splicing portion (12) are spliced ​​together to form a receiving chamber (13), wherein an upper contact (14) and a lower contact (15) are arranged in the receiving chamber (13), wherein a first assembly section (2) for receiving an arc extinguishing cover (20) is formed above the upper contact (14), and a second assembly section (3) for receiving an arc extinguishing chute (30) is formed on one side of the receiving chamber (13), wherein the arc extinguishing chute (30) is detachably arranged in the second assembly section (3) via a locking member (4).

2. The arc extinguishing cover mechanism of the fuse type disconnector according to claim 1 is characterized in that: The locking member (4) is fixedly mounted on a side of the arc extinguishing chute (30) away from the accommodating cavity (13) and is formed with two first limiting grooves (40); the first splicing portion (11) and the second splicing portion (12) are located in the second assembly section (3) and are provided with second limiting grooves (41) adapted to the two first limiting grooves (40).

3. The arc extinguishing cover (20) mechanism of the fuse-type disconnector according to claim 2 is characterized in that: A matching oblique waist (42) is provided on the outer side of the second limiting groove (41).

4. The arc extinguishing cover mechanism of the fuse type disconnector according to claim 2 is characterized in that: The arc-extinguishing chute (30) is provided with a first fastening hole (31), the locking member (4) is provided with a second fastening hole (32) at a position corresponding to the first fastening hole (31), and the arc-extinguishing chute (30) is connected with a fastener (33) adapted to the first fastening hole (31) and the second fastening hole (32).

5. The arc extinguishing cover mechanism of the fuse type disconnector according to claim 2 is characterized in that: Two force-carrying parts (43) are correspondingly formed on the outer side of the locking member (4), and a reinforcing plate (44) is also provided between the force-carrying part (43) and the main body of the fastener (33).

6. The arc extinguishing cover mechanism of the fuse type disconnector according to claim 1, characterized in that: The arc extinguishing baffle (30) array is provided with a plurality of heat dissipation through holes (34).

7. The arc extinguishing cover mechanism of the fuse type disconnector according to claim 1 is characterized in that: A clamping portion (21) is formed on the top of the arc extinguishing cover (20), and a clamping tooth (22) adapted to the clamping portion (21) is formed on the top of the arc extinguishing chute (30).

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