A distribution box main switch

Abstract

The utility model relates to a kind of distribution box main switch, including, shell, the shell includes the upper shell and lower shell of upper and lower splicing, the left side of the lower shell is provided with two support tables on protruding, the sidewall of the lower shell is provided with the opening of the inside of lower shell and support table intercommunication on opening, the lower side of the upper shell is provided with the baffle that is inserted into opening on protruding, the shell is equipped with operating mechanism;Terminal group, the terminal group includes first terminal and second terminal respectively arranged on two the support table, the first terminal and second terminal are all connected with conducting row;Connecting conducting group, the connecting conducting group includes first conducting sheet and second conducting sheet, one end of the first conducting sheet and second conducting sheet is outwardly protruding from the right side of shell.The utility model has the beneficial effects that: smaller, wiring is convenient, wiring is simple.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a main switch for a distribution box. Background Technology

[0002] The main switch of the distribution box is the main switch that controls the power supply of the entire box. In order to facilitate disassembly and assembly and save space in the box, existing distribution boxes use conductor bars to allow multiple plug-in circuit breakers to be plugged in at the same time. All the plug-in circuit breakers are connected to the conductor bars, and the main switch of the distribution box is used to control the power supply of the conductor bars, thereby realizing the power supply control of all circuit breakers.

[0003] Existing distribution boxes typically have terminals on both the top and bottom for wiring the main switch. This results in connecting wires extending from both sides after the main switch is installed inside the distribution box, occupying considerable space and often preventing the installation of the main switch or other electrical equipment within the distribution box. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a main switch for a distribution box to solve the above problems.

[0005] The technical solution of this utility model is implemented as follows: a main switch for a distribution box, comprising, The outer shell includes an upper shell and a lower shell that are joined together. Two support platforms protrude from the upper left side of the lower shell. An opening is provided on the side wall of the lower shell to connect the support platforms with the interior of the lower shell. A baffle protrudes from the lower side of the upper shell and extends into the opening. An operating mechanism is provided inside the outer shell. A terminal block assembly, comprising a first terminal block and a second terminal block respectively disposed on the two support platforms, wherein both the first terminal block and the second terminal block are connected to a conductive busbar; A conductive assembly is provided, comprising a first conductive sheet and a second conductive sheet, one end of which extends outward from the right side of the outer casing. The conductive bar of the first terminal block is electrically connected to the first conductive plate through an operating mechanism, and the conductive bar of the second terminal block is electrically connected to the second conductive plate through an operating mechanism. A gap is provided between the baffle and the bottom of the opening to allow the conductive bar to pass through.

[0006] By adopting the above technical solution, the terminal block and the connecting conductive block are respectively located on the left and right sides of the outer casing. This allows the main switch of the distribution box to be connected to external wires through the terminal block during installation, and the conductive plate to be connected to the conductive bar inside the distribution box. This results in a smaller size, more convenient wiring, and simpler wiring.

[0007] The present invention is further configured such that: the lower side of the lower housing is provided with an installation groove for embedding the first conductive sheet and the second conductive sheet, the lower side of the first conductive sheet and the second conductive sheet does not protrude from the installation groove, and the first conductive sheet and the second conductive sheet are fixed to the lower housing by bolts and one end extends to the right side of the outer housing.

[0008] By adopting the above technical solution, the first conductive sheet and the second conductive sheet can be completely embedded into the mounting groove, making it more convenient to install the casing into the distribution box.

[0009] The present invention is further configured such that: the lower housing is provided with a clip for fastening with the distribution box.

[0010] By adopting the above technical solution, when the outer casing is installed into the distribution box, it is first pre-fixed by the clips and then fixed with bolts, making the installation of the main switch of the distribution box more convenient.

[0011] The present invention is further configured such that: the support platform is U-shaped, the support platform includes a horizontally arranged bottom and vertically arranged sides on both sides of the bottom, and the wiring terminal group is arranged on the bottom and located between the two sides.

[0012] By adopting the above technical solution, it is more convenient to connect the terminal block on the support platform to external wires.

[0013] The present invention is further configured such that: a through hole for screw connection is provided on one end of the first conductive sheet and the second conductive sheet.

[0014] By adopting the above technical solution, the first and second conductive sheets can be effectively connected to the conductive busbars inside the distribution box.

[0015] The present invention is further configured such that: a thermal tripping mechanism and a magnetic tripping mechanism are provided between the conductive bar of the first terminal block and the operating mechanism, and between the second conductive sheet and the operating mechanism; a stationary contact is provided on the conductive bar of the first conductive sheet and the second terminal block; and the operating mechanism includes a transmission rod that cooperates with the thermal tripping mechanism and the magnetic tripping mechanism, and a moving contact that cooperates with the stationary contact.

[0016] By adopting the above technical solution, the conductive bar and the second conductive piece of the first terminal block cooperate with the operating mechanism through a thermal tripping mechanism and a magnetic tripping mechanism. The opening and closing of the moving contact and the stationary contact are realized through the action of the operating mechanism, making it smaller in size and having complete circuit breaking and arc extinguishing functions. The present invention is further configured such that: the thermal tripping mechanism includes a bimetallic strip and an adjusting bolt; the bimetallic strip is L-shaped and its lower end is fixed on the conductive bar and the second conductive plate of the first terminal; the upper end of the bimetallic strip is connected to the adjusting bolt; when the thermal tripping action is performed, the bimetallic strip drives the transmission rod to move, thereby realizing the separation of the moving contact and the stationary contact.

[0017] By adopting the above technical solution, when the bimetallic strip heats up and bends, it will push the transmission rod to move through the adjusting bolt, thereby realizing the opening action of the moving contact and the stationary contact.

[0018] The present invention is further configured such that: the magnetic tripping mechanism includes a fixing member, a magnetic yoke, and an armature; the fixing member and the magnetic yoke are both U-shaped and fixedly connected to the conductive bar and the second conductive sheet of the first terminal block; the armature has connecting ears protruding on both sides that are rotatably connected to the fixing member; the armature has a push rod protruding on it that cooperates with the transmission rod; the armature rotates when the magnetic tripping is activated, thereby driving the transmission rod to move and realize the separation of the moving contact and the stationary contact.

[0019] By adopting the above technical solution, when the current on the conductive bar of the first terminal or the second conductive sheet exceeds a certain value, the magnetic force generated by the yoke will attract the armature to rotate, thereby pushing the transmission rod to move through the push rod, realizing the opening action of the moving contact and the stationary contact.

[0020] The present invention is further configured such that: an arc-extinguishing chamber is provided at the opening and closing point of the moving contact and the stationary contact; the arc-extinguishing chamber includes arc-extinguishing grid plates arranged at intervals along the height direction and arc-extinguishing covers provided on both sides of the arc-extinguishing grid plates; the bottom of the arc-extinguishing chamber is provided with a conductive bar electrically connected to the second terminal and an arc-inducing plate on the first conductive plate; the arc-inducing plate is located close to the stationary contact.

[0021] By adopting the above technical solution, the arc-initiating plate can effectively introduce the generated electric arc into the depth of the arc-extinguishing chamber, thereby improving the arc-extinguishing effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a cross-sectional view of the structure of this utility model; Figure 5 This is an exploded view of the outer shell structure of this utility model; Figure 6 This is a schematic diagram of the thermal tripping mechanism and the magnetic tripping mechanism in this utility model; Figure 7 This is a cross-sectional view of the arc-extinguishing chamber in this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-7 As shown, this utility model discloses a main switch for a distribution box, including a housing, a terminal block assembly, and a connecting conductive assembly. The housing includes an upper housing 1 and a lower housing 2, which are joined together. Two support platforms 20 protrude from the upper left side of the lower housing 2. An opening 21 is provided on the side wall of the lower housing 2, connecting the support platforms 20 and the interior of the lower housing 2. A baffle 10 protrudes from the lower side of the upper housing 1 and extends into the opening 21. An operating mechanism 9 is provided inside the housing. The terminal block assembly includes a first terminal 30 and a second terminal 30 respectively disposed on the two support platforms 20. The terminal block 31, the first terminal block 30, and the second terminal block 31 are all connected to conductive bars 4. The connecting conductive group includes a first conductive piece 50 and a second conductive piece 51, one end of which extends outward from the right side of the outer casing. The conductive bar 4 of the first terminal block 30 is electrically connected to the first conductive piece 50 through an operating mechanism 9, and the conductive bar 4 of the second terminal block 31 is electrically connected to the second conductive piece 51 through the operating mechanism 9. A gap is provided between the baffle 10 and the bottom of the opening 21 to allow the conductive bar 4 to pass through. By placing the terminal block group and the connecting conductive group on the left and right sides of the outer casing respectively, the main switch of the distribution box can be connected to external wires through the terminal blocks during installation, and the conductive pieces can be connected to the conductive bars inside the distribution box. This results in a smaller size, more convenient wiring, and simpler wiring.

[0026] In this embodiment of the invention, the lower housing 2 has a mounting groove 22 on its lower side for embedding the first conductive sheet 50 and the second conductive sheet 51. The lower surfaces of the first conductive sheet 50 and the second conductive sheet 51 do not protrude from the mounting groove 22. The first conductive sheet 50 and the second conductive sheet 51 are fixed to the lower housing 2 by bolts, with one end extending to the right side of the housing. This allows the first conductive sheet 50 and the second conductive sheet 51 to be completely embedded in the mounting groove 22, making it more convenient to install the housing into the distribution box.

[0027] In this embodiment of the invention, the lower housing 2 is provided with a latching block 23 for snap-fit ​​connection with the distribution box. When the housing is installed into the distribution box, it is first pre-fixed by the latching block 23, and then fixed with bolts, making the installation of the main switch of the distribution box more convenient.

[0028] In this embodiment of the invention, the support platform 20 is U-shaped, comprising a horizontally positioned bottom 200 and vertically positioned side portions 201 on both sides of the bottom 200. The terminal block assembly is located on the bottom 200 and between the two side portions 201. This design makes it easier to connect the terminal block assembly on the support platform 20 to external wires.

[0029] In this embodiment of the invention, a through hole for screw connection is provided on one end of the first conductive sheet 50 and the second conductive sheet 51. This effectively connects the first conductive sheet 50 and the second conductive sheet 51 to the conductive busbar inside the distribution box.

[0030] In this embodiment of the invention, a thermal tripping mechanism 6 and a magnetic tripping mechanism 7 are provided between the conductive bar 4 of the first terminal 30 and the operating mechanism 9, and between the second conductive sheet 51 and the operating mechanism 9. A stationary contact 92 is provided on both the first conductive sheet 50 and the conductive bar 4 of the second terminal 31. The operating mechanism 9 includes a transmission rod 90 that cooperates with the thermal tripping mechanism 6 and the magnetic tripping mechanism 7, and a moving contact 91 that cooperates with the stationary contact 92. The conductive bar 4 of the first terminal 30 and the second conductive sheet 51 cooperate with the operating mechanism 9 through the thermal tripping mechanism 6 and the magnetic tripping mechanism 7. The opening and closing of the moving contact 91 and the stationary contact 92 is achieved through the action of the operating mechanism 9, resulting in a smaller size and complete circuit breaking and arc extinguishing functions.

[0031] In this embodiment of the invention, the thermal tripping mechanism 6 includes a bimetallic strip 60 and an adjusting bolt. The bimetallic strip 60 is L-shaped and its lower end is fixed to the conductive bar 4 and the second conductive plate 51 of the first terminal 30. The upper end of the bimetallic strip 60 is connected to the adjusting bolt. When the bimetallic strip 60 is thermally tripped, it drives the transmission rod 90 to move, thereby separating the moving contact 91 from the stationary contact 92. When the bimetallic strip 60 heats up and bends, it will push the transmission rod 90 to move through the adjusting bolt, thereby separating the moving contact 91 from the stationary contact 92.

[0032] In this embodiment of the invention, the magnetic tripping mechanism 7 includes a fixing member 70, a magnetic yoke 71, and an armature 72. Both the fixing member 70 and the magnetic yoke 71 are U-shaped and fixedly connected to the conductive bar 4 and the second conductive plate 51 of the first terminal 30. Connecting ears 720, rotatably connected to the fixing member 70, protrude from both sides of the armature 72. A push rod 721, cooperating with the transmission rod 90, protrudes from the armature 72. When the magnetic tripping action is performed, the armature 72 rotates, thereby driving the transmission rod 90 to move, realizing the opening of the moving contact 91 and the stationary contact 92. When the current on the conductive bar 4 or the second conductive plate 51 of the first terminal 30 exceeds a certain value, the magnetic force generated by the magnetic yoke 71 attracts the armature 72 to rotate, thereby pushing the transmission rod 90 through the push rod 721, realizing the opening of the moving contact 91 and the stationary contact 92.

[0033] In this embodiment of the invention, an arc-extinguishing chamber 8 is provided at the opening and closing point of the moving contact 91 and the stationary contact 92. The arc-extinguishing chamber 8 includes arc-extinguishing grid plates 80 arranged at intervals along the height direction and arc-extinguishing covers 81 provided on both sides of the arc-extinguishing grid plates 80. At the bottom of the arc-extinguishing chamber 8, an arc-inducing plate 82 is provided, electrically connected to the conductive busbar 4 of the second terminal 31 and the first conductive plate 50. The arc-inducing plate 82 is located close to the stationary contact 92. The arc-inducing plate 82 can effectively guide the generated arc into the depth of the arc-extinguishing chamber 8, thereby improving the arc-extinguishing effect.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A main switch for a distribution box, characterized in that, include, The outer shell includes an upper shell (1) and a lower shell (2) that are assembled together. Two support platforms (20) are provided on the upper left side of the lower shell (2). An opening (21) is provided on the side wall of the lower shell (2) to connect the support platforms (20) and the interior of the lower shell (2). A baffle (10) protrudes from the lower side of the upper shell (1) and extends into the opening (21). An operating mechanism (9) is provided inside the outer shell. The terminal block assembly includes a first terminal block (30) and a second terminal block (31) respectively disposed on the two support platforms (20), and both the first terminal block (30) and the second terminal block (31) are connected to a conductive busbar (4). A connecting conductive group is provided, the connecting conductive group including a first conductive piece (50) and a second conductive piece (51), one end of the first conductive piece (50) and the second conductive piece (51) extending outward from the right side of the outer casing; The conductive bar (4) of the first terminal (30) is electrically connected to the first conductive sheet (50) through the operating mechanism (9), and the conductive bar (4) of the second terminal (31) is electrically connected to the second conductive sheet (51) through the operating mechanism (9). A gap is provided between the baffle (10) and the bottom of the opening (21) for the conductive bar (4) to pass through.

2. The main switch of a distribution box according to claim 1, characterized in that, The lower housing (2) has an installation groove (22) for embedding the first conductive sheet (50) and the second conductive sheet (51) on its lower side. The lower sides of the first conductive sheet (50) and the second conductive sheet (51) do not protrude from the installation groove (22). The first conductive sheet (50) and the second conductive sheet (51) are fixed to the lower housing (2) by bolts and one end extends to the right side of the outer shell.

3. The main switch of a distribution box according to claim 1, characterized in that, The lower housing (2) is provided with a clip (23) for snap-fit ​​connection with the distribution box.

4. The main switch of a distribution box according to claim 1, characterized in that, The support platform (20) is U-shaped and includes a horizontally arranged bottom (200) and vertically arranged side parts (201) on both sides of the bottom (200). The terminal block is arranged on the bottom (200) and located between the two side parts (201).

5. A main switch for a distribution box according to claim 1, characterized in that, The first conductive sheet (50) and the second conductive sheet (51) have through holes for screw connection at their extended ends.

6. A main switch for a distribution box according to claim 1, characterized in that, A thermal tripping mechanism (6) and a magnetic tripping mechanism (7) are provided between the conductive bar (4) of the first terminal (30) and the operating mechanism (9) and between the second conductive sheet (51) and the operating mechanism (9). A stationary contact (92) is provided on the conductive bar (4) of the first conductive sheet (50) and the second terminal (31). The operating mechanism (9) includes a transmission rod (90) that cooperates with the thermal tripping mechanism (6) and the magnetic tripping mechanism (7) and a moving contact (91) that cooperates with the stationary contact (92).

7. A main switch for a distribution box according to claim 6, characterized in that, The thermal tripping mechanism (6) includes a bimetallic strip (60) and an adjusting bolt. The bimetallic strip (60) is L-shaped and its lower end is fixed on the conductive bar (4) and the second conductive strip (51) of the first terminal (30). The upper end of the bimetallic strip (60) is connected to the adjusting bolt. When the bimetallic strip (60) is in thermal tripping action, it drives the transmission rod (90) to move, thereby realizing the opening of the moving contact (91) and the stationary contact (92).

8. A main switch for a distribution box according to claim 6, characterized in that, The magnetic tripping mechanism (7) includes a fixing member (70), a magnetic yoke (71) and an armature (72). The fixing member (70) and the magnetic yoke (71) are both U-shaped and fixedly connected to the conductive bar (4) and the second conductive sheet (51) of the first terminal (30). The armature (72) has connecting ears (720) protruding on both sides that are rotatably connected to the fixing member (70). The armature (72) has a push rod (721) protruding on it that cooperates with the transmission rod (90). When the magnetic tripping action is performed, the armature (72) rotates, thereby driving the transmission rod (90) to move, so as to realize the opening of the moving contact (91) and the stationary contact (92).

9. A main switch for a distribution box according to claim 6, characterized in that, An arc-extinguishing chamber (8) is provided at the opening and closing points of the moving contact (91) and the stationary contact (92). The arc-extinguishing chamber (8) includes arc-extinguishing grid plates (80) arranged at intervals along the height direction and arc-extinguishing covers (81) provided on both sides of the arc-extinguishing grid plates (80). The bottom of the arc-extinguishing chamber (8) is provided with an arc-inducing plate (82) electrically connected to the conductive bar (4) of the second terminal (31) and the first conductive plate (50). The arc-inducing plate (82) is located close to the stationary contact (92).

Images