Hanging type fuse disconnecting switch

Abstract

The utility model relates to a hitching type fuse disconnecting switch, which comprises a base, a fuse link and an upper cover which is arranged on the base and can be opened or closed, a power connection part which is suitable for being matched with contact knife parts at two ends of the fuse link and a wiring part which is connected with an external cable are respectively arranged on the base, and the fuse link is connected with a clamping piece. The upper cover is respectively provided with a limiting installation part and a guide warping plate, the limiting installation part and the guide warping plate are matched with each other and form a limiting assembly cavity, and a clamping part on the fuse link slides into the limiting assembly cavity from one side of the guide warping plate during assembly and is limited and installed in the limiting assembly cavity. The mounting structure has the effect of facilitating quick mounting or quick dismounting and maintenance.

Description

Technical Field

[0001] The present application relates to the technical field of fuses, and in particular to a hanging type fuse isolating switch. Background Art

[0002] Fuse-type disconnectors are important switching devices in low-voltage power distribution electrical systems. When the current exceeds the specified value for a period of time, the heat generated by the fuse melts the fuse, thereby disconnecting the circuit. Its main function is to be used as a power switch, disconnector, emergency switch in distribution circuits and motor circuits with high short-circuit currents, and as an AC circuit protection.

[0003] The existing patent with authorization announcement number CN214099567U discloses an isolating switch fuse, including a base 10, a flip cover 11 arranged on the base 10, a fuse 12 linked with the flip cover 11, and two groups of conductive wiring assemblies 20 respectively arranged in the base 10 and matched with the fuse 12. The conductive wiring assembly 20 includes a contact plate 21 arranged in the base 10 and in contact with the conductive sheet 121 of the fuse 12, and a terminal 22 arranged on the contact plate 21.

[0004] In the above, the fuse can be turned on and off by flipping the flap on the base. However, when the fuse is damaged and needs to be replaced or repaired, the structure needs to be repaired from the base or the fuse needs to be removed from the base, which has the defect of inconvenient assembly or installation. Utility Model Content

[0005] The present application provides a hanging type fuse isolating switch, which has the effect of being easy to install quickly or disassemble quickly for maintenance.

[0006] The present application provides a hanging type fuse isolating switch adopts the following technical solution:

[0007] A hanging fuse disconnect switch comprises a base, a fuse body and an upper cover mounted on the base and capable of being opened or closed, wherein a power connection part suitable for cooperating with contact parts at both ends of the fuse body and a wiring part connected to an external cable are respectively mounted on the base, a clamping piece is connected to the fuse body, and a limit mounting piece and a guide rocker are respectively mounted on the upper cover, the limit mounting piece and the guide rocker cooperate with each other to form a limit assembly cavity, and during assembly, the clamping piece on the fuse body slides into the limit assembly cavity from one side of the guide rocker and is limitedly mounted therein.

[0008] Preferably, the position limiting mounting member includes a U-shaped portion and extended edges integrally connected to both sides of the U-shaped portion, and a straight mounting groove is symmetrically provided in the upper cover, and the two extended edges are respectively embedded in the two straight mounting grooves.

[0009] Preferably, the clamping member is a T-shaped member, a clearance groove is provided on the U-shaped portion of the position-limiting mounting member, and the T-shaped portion of the T-shaped member is position-limitedly mounted in the position-limiting assembly cavity through the clearance groove.

[0010] Preferably, the guide rocker includes a snap portion, an installation limit portion and a tongue portion that are integrally connected in sequence, the snap portion is snap-fitted and installed on the upper cover, and the installation limit portion and the U-shaped portion form the limit assembly cavity; the free end of the tongue portion is inclined toward the notch direction of the give way groove, and the free end of the tongue portion protrudes from the outer surface of the U-shaped portion.

[0011] Preferably, a mounting sleeve column is provided on the upper cover, and a sleeve hole is opened on the buckle portion. When the guide rocker is assembled, the sleeve hole is sleeved on the mounting sleeve column.

[0012] Preferably, one side of the buckle portion connected to the installation limiting portion protrudes from the installation limiting portion.

[0013] Preferably, a limiting column is provided on the upper cover, and the limiting column is arranged on one side of the slot of the straight-line mounting slide and is spaced therefrom; a guiding bevel is provided at the slot of the straight-line mounting slide, and the guiding bevel is arranged on a side wall of the straight-line mounting slide facing the base.

[0014] Preferably, a notch is provided on the extended edge, a mounting column is provided on the upper cover, and one end of the mounting column is spaced apart from a straight mounting groove.

[0015] Preferably, at least two of the clamping parts are provided, the number of the limiting mounting parts corresponds to the number of the clamping parts, and at least one of the limiting mounting parts and the guide rocker matching assembly structure is provided.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] The fastener on the fuse is slid into the limit assembly cavity from one side of the guide seesaw and limitedly installed; the fuse is quickly and conveniently installed; when the upper cover is flipped and closed on the base, the contact parts at both ends of the fuse are respectively connected to the power connection part and the wiring part on the base, so that the fuse is connected; when the fuse needs to be repaired or replaced, the upper cover is flipped and opened from the base, and the contact parts at both ends of the fuse can be disconnected from the power connection part and the wiring part, and then the fuse is slid out of the limit assembly cavity, so that the fuse is quickly and conveniently removed from the upper cover, which has the effect of facilitating quick installation or quick disassembly for maintenance;

[0018] By arranging a mounting sleeve column on the upper cover and opening a sleeve hole on the buckle part, when assembling the guide rocker, on the one hand, it is sleeved on the mounting sleeve column through the sleeve hole, and on the other hand, it is installed on the upper cover through the buckle of the buckle part, so that the guide rocker can be detachably fixedly installed on the upper cover;

[0019] By symmetrically opening a straight installation slot in the upper cover, the two extended edges are respectively embedded in the two straight installation slots, so that the limit installation piece can be detachably fixed on the upper cover; at the same time, a limit column is arranged on the upper cover, and when the limit installation piece is installed, it is sleeved outside the installation column through the notch, and then the limit installation piece is tilted to make the extended edge slide from the guide bevel into the straight installation slot. After the limit installation piece is assembled, it is limited by the limit column at the notch of the straight installation slot, so that the limit installation piece is limitedly installed on the upper cover and cooperates with the guide rocker plate, so as to achieve the effect of fast and convenient fixed installation of the fuse body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the hanging type fuse disconnect switch;

[0021] Figure 2 It is a structural diagram of the base in the hanging type fuse disconnector;

[0022] Figure 3 It is a cross-sectional view of a hook-type fuse disconnector at the axis of one of the fuse links;

[0023] Figure 4 It is a structural schematic diagram of the upper cover of the hanging type fuse disconnector;

[0024] Figure 5 is a cross-sectional view of the upper cover at the axis of one of the fuse links;

[0025] Figure 6 yes Figure 5 The enlarged view of point A in the middle;

[0026] Figure 7 It is a schematic diagram of the local structure of the upper cover;

[0027] Figure 8 yes Figure 7 Schematic diagram of the local structure in;

[0028] Fig. 9 It is a schematic diagram of the structure of the cooperation between the guide seesaw and the tongue portion;

[0029] Fig.10 It is a structural schematic diagram of the guide rocker.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. Base; 11. Power connection part; 12. Wiring part; 2. Fuse; 21. Snap-on part; 3. Upper cover; 31. Mounting sleeve column; 32. Slotted mounting groove; 33. Mounting column; 34. Limiting column; 35. Guide bevel; 4. Guide rocker; 41. Buckle part; 411. Sleeve hole; 42. Mounting limiting part; 43. Tongue part; 5. Limiting mounting part; 51. U-shaped part; 511. Make way groove; 52. Extended edge; 521. Notch; 6. Limiting assembly cavity. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] An embodiment of the present application discloses a hanging type fuse isolating switch.

[0033] Reference Figures 1 to 4 The hanging fuse disconnector comprises a base 1, a fuse body 2 and an upper cover 3 which is rotatably mounted on the base 1 at one end and can be opened or closed; a power connection part 11 suitable for cooperating with the contact parts at both ends of the fuse body 2 and a wiring part 12 connected to an external cable are respectively mounted on the base 1.

[0034] Reference Figure 4 , Figure 5 , wherein a clamping piece 21 is connected to the fuse 2, the clamping piece 21 can be a T-shaped piece integrally connected to the outer shell of the fuse 2, and at least two clamping pieces 21 are provided, and two pieces are preferably provided in this solution; a limit mounting piece 5 and a guide rocker plate 4 are respectively installed on the upper cover 3, the number of the limit mounting pieces 5 corresponds to the number of the clamping piece 21, and at least one limit mounting piece 5 and the guide rocker plate 4 are provided with an assembly structure, and one piece is preferably provided in this solution.

[0035] Reference Figures 4 to 10 The guide rocker 4 includes a buckle portion 41, an installation limit portion 42 and a tongue portion 43 which are connected in sequence as one piece. One side of the buckle portion 41 connected to the installation limit portion 42 protrudes from the installation limit portion 42. A mounting sleeve 31 is provided on the upper cover 3, and a sleeve hole 411 is opened on the buckle portion 41. When the guide rocker 4 is assembled, on the one hand, it is sleeved on the mounting sleeve 31 through the sleeve hole 411, and on the other hand, it is installed on the upper cover 3 through the buckle engagement of the buckle portion 41, so that the guide rocker 4 can be detachably fixedly installed on the upper cover 3.

[0036] The position limiting mounting member 5 includes a U-shaped portion 51 and an extending edge 52 integrally connected to both sides of the U-shaped portion 51; a straight mounting groove 32 is symmetrically provided in the upper cover 3, and the position limiting mounting member 5 is detachably fixedly installed on the upper cover 3 by respectively engaging the two extending edges 52 in the two straight mounting grooves 32.

[0037] The installation limit portion 42 on the guide rocker 4 and the U-shaped portion 51 of the limit mounting member 5 are mutually enclosed to form a limit assembly cavity 6, and the free end of the tongue portion 43 is arranged obliquely toward the notch direction of the yield groove 511, and the free end of the tongue portion 43 protrudes from the outer surface of the U-shaped portion 51.

[0038] A clearance groove 511 is provided on the U-shaped portion 51 of the limiting mounting member 5. During assembly, the T-shaped member on the fuse body 2 is clamped in the clearance groove 511 to achieve the T-shaped member being limitedly installed in the limiting mounting cavity 6. A notch 521 is provided on the extended edge 52. A mounting column 33 is provided on the upper cover 3. One end of the mounting column 33 is spaced apart from the straight mounting slide groove 32. At the same time, a limiting column 34 is provided on the upper cover 3. The limiting column 34 is arranged on one side of the notch of the straight mounting slide groove 32 and is spaced apart from it. A guide is provided at the notch of the straight mounting slide groove 32. The guide bevel 35 is arranged on a side wall of the straight installation slot 32 facing the base 1; when the limit installation member 5 is installed, it is sleeved outside the installation column 33 through the notch 521, and then the limit installation member 5 is tilted to make the extension edge 52 slide from the guide bevel 35 into the straight installation slot 32. After the limit installation member 5 is assembled, it is limited by the limit column 34 at the notch of the straight installation slot 32, so that the limit installation member 5 is limitedly installed on the upper cover 3 and cooperates with the guide rocker 4, so as to achieve the purpose of quick and convenient installation or quick and convenient disassembly of the fuse body 2.

[0039] The implementation principle is as follows: when assembling the fuse 2, the clamping member 21 on the fuse 2 is pressed from one side of the guide seesaw 4 and slides into the direction of the clearance groove 511. At this time, the tongue portion 43 on the guide seesaw 4 is deformed away from the clearance groove 511. When the clamping member 21 slides to the installation limit portion 42 of the guide seesaw 4, the clamping member 21 can be limitedly installed in the limit assembly cavity 6 formed by the installation limit portion 42 and the U-shaped portion 51, so that the fuse 2 can be quickly and conveniently installed. When the upper cover 3 is flipped and closed on the base 1, the contact blades at both ends of the fuse 2 are respectively The power connection part 11 and the wiring part 12 on the base 1 are connected to realize the connection of the fuse; when the fuse needs to be repaired or replaced, the upper cover 3 is flipped over to open it from the base 1, and the contact knife parts at both ends of the fuse body 2 can be disconnected from the power connection part 11 and the wiring part 12, and then the tongue part 43 on the guide rocker 4 is pressed to deform it away from the yield groove 511, and then the fuse body 2 is slid out of the limit assembly cavity 6, so as to realize the purpose of quickly and conveniently removing the fuse body 2 from the upper cover 3, which has the effect of facilitating quick installation or quick disassembly and maintenance.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hanging type fuse disconnector, comprising a base (1), a fuse body (2) and an upper cover (3) mounted on the base (1) and capable of being opened or closed, wherein a power connection part (11) adapted to cooperate with contact parts at both ends of the fuse body (2) and a connection part (12) connected to an external cable are respectively mounted on the base (1), characterized in that: A clamping piece (21) is connected to the fuse (2), and a limit mounting piece (5) and a guide seesaw (4) are respectively mounted on the upper cover (3). The limit mounting piece (5) and the guide seesaw (4) cooperate with each other to form a limit assembly cavity (6). During assembly, the clamping piece (21) on the fuse (2) slides from one side of the guide seesaw (4) and is limit-mounted in the limit assembly cavity (6).

2. The hook-type fuse disconnector according to claim 1, characterized in that: The position-limiting mounting member (5) comprises a U-shaped portion (51) and extending edges (52) integrally connected to both sides of the U-shaped portion (51); a straight-line mounting slide groove (32) is symmetrically provided in the upper cover (3); and the two extending edges (52) are respectively embedded in the two straight-line mounting slide grooves (32).

3. The hook-type fuse disconnector according to claim 2, characterized in that: The clamping member (21) is a T-shaped member, a clearance groove (511) is provided on the U-shaped portion (51) of the position-limiting mounting member (5), and the T-shaped portion of the T-shaped member is position-limitedly mounted in the position-limiting assembly cavity (6) through the clearance groove (511).

4. The hook-type fuse disconnector according to claim 3, characterized in that: The guide rocker plate (4) comprises a buckle portion (41), an installation limit portion (42) and a tilting tongue portion (43) which are integrally connected in sequence; the buckle portion (41) is buckled and installed on the upper cover (3); the installation limit portion (42) and the U-shaped portion (51) form a limit assembly cavity (6); the free end of the tilting tongue portion (43) is arranged obliquely toward the notch direction of the clearance groove (511), and the free end of the tilting tongue portion (43) protrudes from the outer surface of the U-shaped portion (51).

5. The hanging fuse disconnector according to claim 4 is characterized in that: A mounting sleeve column (31) is provided on the upper cover (3), a sleeve hole (411) is provided on the buckle portion (41), and the sleeve hole (411) is sleeved on the mounting sleeve column (31) when the guide rocker plate (4) is assembled.

6. The hook-type fuse disconnector according to claim 4, characterized in that: One side of the buckle portion (41) connected to the installation limit portion (42) is arranged to protrude from the installation limit portion (42).

7. The hanging fuse disconnector according to claim 2, characterized in that: A limiting column (34) is provided on the upper cover (3), and the limiting column (34) is arranged on one side of the notch of the straight-line installation slide groove (32) and is arranged at a distance therefrom; a guiding bevel (35) is provided at the notch of the straight-line installation slide groove (32), and the guiding bevel (35) is arranged on a side wall of the straight-line installation slide groove (32) facing the base (1).

8. The hook-type fuse disconnector according to claim 7, characterized in that: A notch (521) is provided on the extended edge (52), and a mounting column (33) is provided on the upper cover (3), with one end of the mounting column (33) being spaced apart from the straight mounting groove (32).

9. The hook-type fuse disconnector according to claim 1, characterized in that: At least two of the clamping parts (21) are provided, the number of the position-limiting mounting parts (5) corresponds to the number of the clamping parts (21), and at least one of the position-limiting mounting parts (5) and the guide rocker plate (4) is provided in a matching assembly structure.

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