Quick-plug switch

Abstract

The invention discloses a quick-plug type conversion switch, comprising a plurality of contact boxes arranged in an array along a vertical direction, a panel frame located at the top of the topmost contact box, a rotating shaft inserted in the panel frame and the plurality of contact boxes, and a handle fixed at the top of the rotating shaft, each group of contact boxes comprises a base, two groups of moving contact assemblies and static contact assemblies respectively located at the four corners of the base, the two groups of moving contact assemblies are respectively located at the middle position of the inner left side and the middle position of the inner right side of the base; the cross section of the base is square, the four corners of the bottom of the base are provided with a first square slot, the four static contact assemblies are respectively plugged into the four first square slots, the middle positions of the left and right sides of the bottom of the base are provided with a first square slide, and the two groups of moving contact assemblies are respectively slidably plugged into the first square slide. The invention has the advantages of clear division of labor, quick installation, arc elimination, easy assembly, reduced damage cost, easy maintenance, and low maintenance cost.

Description

Technical Field

[0001] The invention relates to the field of transfer switches, in particular to a quick-plug transfer switch. Background Art

[0002] A transfer switch is a low-voltage switch that switches multiple circuits. When the shaft rotates, it drives the moving contact to connect or disconnect with the static contact in sequence, switching the circuit from one set of connections to another set of electrical appliances.

[0003] At present, the patent with the authorization announcement number "CN221994355U" discloses a side quick-plug transfer switch, including a number of contact boxes arranged in an array along the vertical direction, each group of contact boxes includes a base, two moving contact seats and static contacts and wiring devices located at the four corners of the base, the two moving contact seats are located at the middle position of the inner left side and the middle position of the inner right side of the base, the cross section of the base is square, the four corners of the base are provided with chamfers, and each chamfer is provided with a notch with a right triangle cross section on the side away from the horizontal symmetry line of the base; each wiring device includes a spring and two abutments, each spring is respectively abutted against the two abutments, and each spring is abutted against its corresponding static contact. It is used to solve the wiring problem when multiple transfer switches are installed side by side with insufficient space, and can also convert the external connection of the same layer point into an internal connection, which has the effect of improving the aesthetics of the connection.

[0004] However, the spring clip is directly plugged into the base. When pressing the spring clip, it is easy to cause the block of the limit spring clip to be damaged, which in turn causes the entire base to be scrapped, increasing the loss cost. At the same time, the installed base needs to be disassembled, wasting time. Moreover, all the installation steps are installed by the same person, and effective division of labor cannot be carried out, further increasing the installation time.

[0005] Moreover, when the transfer switch is damaged during operation, the block of the limit spring piece is provided inside the base body. When replacing the spring piece or the static contact, it is easy to cause the block of the limit spring piece to be damaged, and the plugging and unplugging of the spring piece or the static contact can easily cause the spring piece or the static contact to become loose, resulting in difficulty in maintenance and high maintenance costs;

[0006] Moreover, when the transfer switch is working, at the moment when the contacts break the circuit, the air in the tiny gap between the moving and static contacts is broken down, thereby causing an arc. When the current flows through the arc zone, a large amount of heat energy and light energy is generated. These energies act on the contacts in the form of high temperature and strong light, causing the contact material to melt and burn, and even causing the contacts to stick and be unable to disconnect, causing serious accidents. Summary of the invention

[0007] The object of the present invention is to provide a quick-plug type transfer switch, which has the advantages of clear division of labor, quick installation, arc extinguishing, easy assembly, reduced damage cost, easy maintenance and low maintenance cost.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions:

[0009] A quick-plug transfer switch, comprising a plurality of contact boxes arranged in an array along a vertical direction, a panel frame located at the top of the topmost contact box, a rotating shaft inserted in the panel frame and the plurality of contact boxes, and a handle fixed at the top of the rotating shaft, wherein each group of the contact boxes comprises a base, two groups of moving contact assemblies and stationary contact assemblies respectively located at the four corners of the base, and the two groups of the moving contact assemblies are respectively located at the middle position of the left side and the middle position of the right side of the base;

[0010] The cross section of the base is square, and first square slots are provided at the four corners of the bottom of the base, and the four static contact assemblies are respectively inserted into the four first square slots, and first square slide grooves are provided at the middle positions of the left and right sides of the bottom of the base, and the two groups of moving contact assemblies are respectively slidably inserted into the first square slide grooves;

[0011] The four static contact assemblies are respectively placed symmetrically along the transverse center axis and the longitudinal center axis of the base, and the static contact assembly located on the left front side includes a fixed block, a static contact, two spring sheets, two abutment blocks, and two limit blocks. The static contact is fixedly sleeved on the front, right and rear sides of the fixed block, and the two spring sheets are respectively clamped on the left side of the inner upper end and the lower end of the fixed block, and the front sides of the two spring sheets are respectively abutted against the left side of the corresponding static contact, and the two limit blocks are respectively clamped on the rear sides of the corresponding two spring sheets, and the two limit blocks are respectively inserted into the rear sides of the inner upper end and the lower end of the fixed block, and the front upper end and the front lower end of the left side of the fixed block are both provided with a first circular through hole, and each first circular through hole corresponds to the position where the corresponding spring sheet and the static contact abut, and the two abutment blocks are respectively inserted into the rear upper end and the rear lower end of the left side of the fixed block, and the two abutment blocks abut against their corresponding spring sheets.

[0012] The preferred solutions are as follows:

[0013] Preferably: the fixed block of the static contact assembly located on the left front side is a square block, the upper right end and the lower right end of the front side of the fixed block are both provided with a first square through hole, and the transverse vertical section of the fixed block is a "convex" shape with the convex part located on the right side;

[0014] A "U"-shaped groove is provided on the rear side of the left side of the top and the rear side of the left side of the bottom of the fixing block, and the opening of each "U"-shaped groove faces rightward, the bottom of the "U"-shaped groove at the upper end of the fixing block is flush with the inner bottom wall of the corresponding first square perforation, and the top of the "U"-shaped groove at the lower end of the fixing block is flush with the inner top wall of the corresponding first square perforation;

[0015] A second slot is provided at the bottom of the "U"-shaped slot at the upper end of the fixed block and at the top of the "U"-shaped slot at the lower end of the fixed block. The cross section of each of the second slots is in the shape of a water drop. The vertex end of each of the second slots is located on the right side. The arc end of each of the second slots is concentric with the "U"-shaped slot. The inner rear side wall of each of the second slots is parallel to the rear side wall of the "U"-shaped slot corresponding to it. The two limit blocks are both cylinders with a water drop-shaped cross section. The two limit blocks are respectively inserted into the two second slots.

[0016] The left side of the top front side and the left side of the bottom front side of the fixing block are both provided with right-angled trapezoidal grooves, the hypotenuse of each trapezoidal groove is located on the left side and the acute angle is located on the rear side, and each trapezoidal groove is connected to its corresponding first square through hole and "U"-shaped groove;

[0017] A second square through hole is formed on the front side of the top of the fixing block, the second square through hole passes through the top and bottom of the fixing block, and the second square through hole is connected to the two trapezoidal grooves;

[0018] The first circular through-holes provided at the front upper end and the front lower end of the left side of the fixing block are both connected to the second square through-holes, the first circular through-hole at the upper end is connected to the trapezoidal groove at the upper end, and the first circular through-hole at the lower end is connected to the trapezoidal groove at the lower end;

[0019] A third-party shaped slot is provided at the upper rear end and the lower rear end of the left side of the fixed block. The third-party shaped slot at the upper end is connected to the trapezoidal slot at the upper end, and the third-party shaped slot at the lower end is connected to the trapezoidal slot at the lower end. The right side of each third-party shaped slot is located at half of the fixed block from left to right. The third-party shaped slot at the upper end cuts the inner bottom wall of the corresponding trapezoidal slot to a depth of 1mm, and the third-party shaped slot at the lower end cuts the inner top wall of the corresponding trapezoidal slot to a depth of 1mm.

[0020] A third rectangular through hole is provided on the rear side of the bottom wall of the first square through hole at the upper end, and the rear side of the third rectangular through hole is flush with the rear side of the fixing block.

[0021] Preferably: the stationary contact of the stationary contact assembly located on the left front side includes a first abutment plate, the first abutment plate is placed horizontally and vertically, a second abutment plate is provided at the middle position of the right side of the first abutment plate, the height of the second abutment plate is half of the height of the first abutment plate, a first bent edge is provided backwards on the right side of the second abutment plate, a second bent edge is provided to the left on the rear side of the first bent edge, a third bent edge is provided backwards on the left side of the second bent edge, a fourth square through-hole placed longitudinally is provided on the front side of the first bent edge, and the height of the fourth square through-hole is consistent with the thickness of the right side of the fixed block , the front side of the fourth square perforation is flush with the front side of the first abutment plate, the rear side of the fourth square perforation is flush with the rear side of the second bent edge, the fourth square perforation penetrates to half of the first abutment plate from right to left, the fourth square perforation penetrates four fifths of the second bent edge from right to left, the static contact is clamped on the right side of the fixed block through the fourth square perforation, the front side of the first abutment plate is flush with the front side of the fixed block, the right side of the first bent edge is flush with the right side of the fixed block, and the rear side of the second bent edge is flush with the rear side of the fixed block;

[0022] The left side of the first abutment plate is located in the second square perforation, and the left side wall of the fourth square perforation located at the first abutment plate abuts against the inner right side wall of the second square perforation;

[0023] The left side of the second bending edge is located in the third square perforation, and the left side wall of the fourth square perforation located at the second bending edge abuts against the inner right side wall of the third square perforation.

[0024] Preferably: the distance from the front side of the second square perforation of the fixed block of the static contact assembly located on the left front side to the rear side wall is twice the thickness of the first abutment plate, a vertical pressure strip is fixedly provided on the left side of the rear side of the first abutment plate, the right side of the pressure strip is flush with the left side wall of the trapezoidal groove, and the front sides of the two spring sheets are both located on the right side of the pressure strip;

[0025] The cross-section of each spring sheet is "U"-shaped, and the "U"-shaped opening of the spring sheet faces right. The spring sheet is inserted between the limit block and the "U"-shaped groove, and the right side of the rear side of the spring sheet abuts against the left side of the front side of the second bent edge. The rear side of the spring sheet is located at the vertex end of the limit block and is provided with a "V"-shaped bend, and the left side wall of the "V"-shaped bend abuts against the vertex end of the limit block. The front side of the spring sheet is bent backward to form a fourth bent edge, and then bent forward to form a fifth bent edge. The fourth bent edge and the arc of the spring sheet clamp the arc end of the limit block, and the left side of the fifth bent edge abuts against the left side wall of the trapezoidal groove of the fixed block. The front side of the fifth bent edge is located at half of the pressure strip from back to front.

[0026] Preferably: the cross section of each of the resisting blocks of the static contact assembly located on the left front side is "L"-shaped, the "L"-shaped opening of each of the resisting blocks is located on the right rear side, a chamfered right angle is provided on the right side of the inner front side wall of the "L"-shaped opening of each of the resisting blocks, a hypotenuse is formed at the chamfered right angle of each of the resisting blocks, the hypotenuse of each of the resisting blocks abuts against the fifth bent edge of the corresponding spring sheet, a first chamfered corner is provided at the chamfered right angle of each of the resisting blocks, a semicircular arc is formed between the fourth bent edge and the fifth bent edge of each of the spring sheets, and the first chamfered corner of each of the resisting blocks is located within the semicircular arc of the corresponding spring sheet;

[0027] A stopper is fixedly provided at the top and the bottom of each stopper, each stopper is integrally formed with the stopper, and each stopper is provided with a second rounded corner cocentric with the first rounded corner at the spring piece;

[0028] Each of the stoppers is in an "L" shape, and a third rounded corner is provided between the inner left side wall and the inner front side wall of the "L"-shaped opening of each of the stoppers, and each of the third rounded corners is located at the opening of the third-shaped slot on the left side wall of the fixing block;

[0029] A first slot is provided on one side of each stop block away from the elastic sheet.

[0030] Preferably: the front upper end and the front lower end of the left side portion, the rear upper end and the rear lower end of the left side portion, the front upper end and the front lower end of the right side portion, and the rear upper end and the rear lower end of the right side portion are all provided with a second circular perforation and a fifth square perforation corresponding to the fixing blocks at the four corners, and each of the fifth square perforations is offset 0.3 mm away from the second circular perforation;

[0031] A second slot is provided on a side of each stop block away from the spring sheet and close to the second circular through hole, and a side of each fifth square through hole of the base close to its corresponding second circular through hole is located in the second slot of the stop block.

[0032] Preferably: a first clearance groove is provided between each of the first square slots and its corresponding first square slide groove, and the third bent edge of each of the static contacts is located in the first square slide groove through the first clearance groove;

[0033] The third bent edge of each of the static contacts is located in the first square slide groove and a magnet is fixedly provided on the side close to the rotating shaft. The front and rear sides of each of the first square slide grooves close to the rotating shaft are provided with a second clearance groove, and each of the magnets is clamped in its corresponding second clearance groove;

[0034] The longitudinal vertical cross-section of each magnet is "C"-shaped, the depth of the "C"-shaped opening of each magnet is two-thirds of the thickness of its corresponding third bent edge, and each third bent edge is clamped inside the "C"-shaped opening of its corresponding magnet.

[0035] Preferably: each moving contact assembly includes a moving contact seat and two springs, the moving contact seat is slidably located in the first square slide groove, the two springs are laterally located at the front and rear sides of the first square slide groove, one end of the two springs are respectively against the front and rear sides of the moving contact seat away from the third bending edge, and one end of the two springs are respectively against the inner side wall of the first square slide groove.

[0036] Preferably, a circle of grooves is formed on the top of the base, a circle of protrusions corresponding to the grooves is fixedly formed on the bottom of the base, and the protrusions of the upper base are inserted into the grooves of the lower base.

[0037] Preferably, an upper cover is provided on the top of the uppermost base, and a lower cover is provided on the bottom of the lowermost base.

[0038] In summary, the present invention has the following beneficial effects:

[0039] 1. The four corners of the bottom of the base are provided with first square slots, and the four static contact assemblies are respectively inserted into the four first square slots, which can facilitate the replacement of the static contact assemblies separately during installation and maintenance, thereby reducing the cost of replacing the base;

[0040] 2. The two springs can make the displacement of the moving contact seat more balanced, preventing one end of the moving contact seat from abutting against the corresponding static contact, while the other end does not abut against the corresponding static contact;

[0041] 3. By providing a magnet on the static contact, the arc can be attracted until the arc is extinguished;

[0042] 4. A circle of grooves is opened on the top of the base, and a circle of protrusions corresponding to the grooves are fixedly provided on the bottom of the base. The protrusions of the upper base are inserted into the grooves of the lower base, which can ensure the dustproof sealing performance between the two bases. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a front side schematic diagram of the overall shape of the embodiment;

[0044] Figure 2 It is an exploded schematic diagram of the overall shape of the embodiment;

[0045] Figure 3 is a front side schematic diagram of a contact box of an embodiment;

[0046] Figure 4 is a bottom side view of a contact box of an embodiment;

[0047] Figure 5 is a partial cross-sectional view of a bottom side view of a contact box of an embodiment;

[0048] Figure 6 yes Figure 5 A magnified view of middle;

[0049] Figure 7 is a bottom side view of a base of an embodiment;

[0050] Figure 8 is a schematic diagram of the overall structure of the static contact assembly located on the left front side of the embodiment;

[0051] Fig. 9 is a schematic diagram of the overall structural shape of a fixed block of a stationary contact assembly located on the left front side of an embodiment;

[0052] Fig.10 is a left side view of a fixing block of a stationary contact assembly located on the left front side of the embodiment;

[0053] Fig.11 is a top view of a fixed block of a stationary contact assembly located on the left front side of the embodiment;

[0054] Fig.12 is a side view of a stationary contact of a stationary contact assembly located on the left front side of the embodiment;

[0055] Fig.13 is a side view of a spring piece of a stationary contact assembly located on the left front side of the embodiment;

[0056] Fig.14 4 is a side view of a stop block of a stationary contact assembly located on the left front side of the embodiment.

[0057] In the figure, 1, contact box; 2, panel frame; 3, rotating shaft; 4, handle; 5, base; 6, moving contact assembly; 7, stationary contact assembly; 8, magnet; 9, upper cover; 10, lower cover;

[0058] 511, first square slot; 512, first square slide; 513, second circular perforation; 514, fifth square perforation; 515, first clearance slot; 516, second clearance slot; 517, groove; 518, protrusion;

[0059] 611, moving contact seat; 612, spring;

[0060] 711, fixed block; 712, static contact; 713, spring; 714, stop block; 715, limit block; 716, first circular perforation; 717, first square perforation; 718, "U"-shaped slot; 719, second slot; 720, trapezoidal slot; 721, second square perforation; 722, third rectangular slot; 723, third rectangular perforation; 724, first stop plate; 725, second stop plate; 72 6. First bending edge; 727. Second bending edge; 728. Third bending edge; 729. Fourth square perforation; 730. Pressing strip; 731. "V"-shaped bend; 732. Fourth bending edge; 733. Fifth bending edge; 734. Chamfered right angle; 735. First chamfered corner; 736. Stopper; 737. Second chamfered corner; 738. Third chamfered corner; 739. First slot; 740. Second slot. DETAILED DESCRIPTION

[0061] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0062] The same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings.

[0063] Quick-plug switch, such as Figure 1-Figure 14 As shown, it includes a plurality of contact boxes 1 arranged in an array along the vertical direction, a panel frame 2 located on the top of the uppermost contact box 1, a rotating shaft 3 inserted into the panel frame 2 and the plurality of contact boxes 1, and a handle 4 fixed on the top of the rotating shaft 3. Each group of contact boxes 1 includes a base 5, two groups of moving contact assemblies 6 and static contact assemblies 7 located at the four corners of the base 5, and the two groups of moving contact assemblies 6 are located at the middle position of the inner left side and the middle position of the inner right side of the base 5, respectively.

[0064] The cross section of the base 5 is square, an upper cover 9 is provided on the top of the base 5 located at the top, and a lower cover 10 is provided on the bottom of the base 5 located at the bottom. A circle of grooves 517 are provided on the top of the base 5 and the lower cover 10, and a circle of protrusions 518 corresponding to the grooves 517 are fixedly provided on the bottom of the base 5 and the upper cover 9. The protrusions 518 of the upper base 5 are inserted into the grooves 517 of the lower base 5, which can ensure the sealing effect of several contact boxes 1 arranged in an array along the vertical direction.

[0065] A first square slot 511 is provided at the four corners of the bottom of the base 5, and the four static contact assemblies 7 are respectively inserted into the four first square slots 511. A first square slide groove 512 is provided in the middle position of the left and right sides of the bottom of the base 5, and the two sets of moving contact assemblies 6 are respectively slidably inserted into the first square slide groove 512.

[0066] The four stationary contact assemblies 7 are respectively placed along the transverse center axis and the longitudinal center axis of the base 5 in a mirror-symmetrical manner;

[0067] The static contact assembly 7 located on the left front side is used as a specific description;

[0068] The static contact assembly 7 located on the left front side includes a fixed block 711, a static contact 712, two spring pieces 713, two abutting blocks 714, and two limit blocks 715. The static contact 712 is fixedly sleeved on the front side, right side, and rear side of the fixed block 711. The two spring pieces 713 are respectively clamped on the left side of the inner upper end and the lower end of the fixed block 711. The front sides of the two spring pieces 713 are respectively abutted against the left side of the corresponding static contact 712. The front upper end and the front lower end of the left side of the fixed block 711 are both provided with a first circular through hole 716. Each first circular through hole 716 corresponds to the position where the corresponding spring piece 713 and the static contact 712 abut. When the wire passes through the first circular through hole 716, the spring piece 713 presses the wire tightly against the left side of the static contact 712.

[0069] The two limit blocks 715 are respectively connected to the rear sides of the two corresponding spring pieces 713, and the two limit blocks 715 are respectively inserted into the rear sides of the upper and lower ends of the fixed block 711, and the limit blocks 715 are used to limit the spring pieces 713;

[0070] The two abutting blocks 714 are respectively inserted into the rear upper end and the rear lower end of the left side of the fixed block 711, and the two abutting blocks 714 are respectively abutted against their corresponding spring sheets 713. When it is necessary to pull out the wire, the abutting blocks 714 are pushed to separate the spring sheets 713 from the static contact 712, and the wire can be pulled out.

[0071] The fixed block 711 of the static contact assembly 7 located on the left front side is a square block, and the upper right end and the lower right end of the front side of the fixed block 711 are both provided with a first square through hole 717, and the transverse vertical section of the fixed block 711 is "convex" and the convex part is located on the right side;

[0072] A "U"-shaped groove 718 is provided on the rear side of the left side of the top and the rear side of the left side of the bottom of the fixing block 711. The opening of each "U"-shaped groove 718 faces rightward. The bottom of the "U"-shaped groove 718 at the upper end of the fixing block 711 is flush with the inner bottom wall of the corresponding first square through hole 717. The top of the "U"-shaped groove 718 at the lower end of the fixing block 711 is flush with the inner top wall of the corresponding first square through hole 717.

[0073] The bottom of the "U"-shaped groove 718 at the upper end of the fixed block 711 and the top of the "U"-shaped groove 718 at the lower end of the fixed block 711 are both provided with second slots 719, the cross section of each second slot 719 is in the shape of a water drop, the vertex end of each second slot 719 is located on the right side, the arc end of each second slot 719 is concentric with the "U"-shaped groove 718, the inner rear side wall of each second slot 719 is parallel to the rear side wall of the "U"-shaped groove 718 corresponding to it, and the two limit blocks 715 are both cylinders with a water drop-shaped cross section, and the two limit blocks 715 are respectively inserted into the two second slots 719;

[0074] A right-angled trapezoidal groove 720 is provided on the left side of the top front side and the left side of the bottom front side of the fixing block 711. The hypotenuse of each trapezoidal groove 720 is located on the left side and the acute angle is located on the rear side. Each trapezoidal groove 720 is connected to its corresponding first square through hole 717 and "U"-shaped groove 718.

[0075] A second square through hole 721 is formed on the front side of the top of the fixing block 711. The second square through hole 721 passes through the top and bottom of the fixing block 711. The second square through hole 721 is connected to the two trapezoidal grooves 720.

[0076] The first circular through-holes 716 provided at the front upper end and the front lower end of the left side of the fixing block 711 are both connected to the second square through-holes 721, the first circular through-hole 716 at the upper end is connected to the trapezoidal groove 720 at the upper end, and the first circular through-hole 716 at the lower end is connected to the trapezoidal groove 720 at the lower end;

[0077] A third-party shaped slot 722 is provided at the upper rear end and the lower rear end of the left side of the fixing block 711. The third-party shaped slot 722 at the upper end is connected to the trapezoidal slot 720 at the upper end, and the third-party shaped slot 722 at the lower end is connected to the trapezoidal slot 720 at the lower end. The right side of each third-party shaped slot 722 is located at the halfway point from left to right of the fixing block 711. The third-party shaped slot 722 at the upper end cuts the inner bottom wall of the corresponding trapezoidal slot 720 to a depth of 1 mm, and the third-party shaped slot 722 at the lower end cuts the inner top wall of the corresponding trapezoidal slot 720 to a depth of 1 mm.

[0078] A third rectangular through hole 723 is formed at the rear side of the bottom wall of the first square through hole 717 at the upper end, and the rear side of the third rectangular through hole 723 is flush with the rear side of the fixing block 711 .

[0079] The stationary contact 712 of the stationary contact assembly 7 located at the left front side includes a first abutment plate 724, which is placed horizontally and vertically, and the height of the first abutment plate 724 is consistent with the height of the fixed block 711. A second abutment plate 725 is provided at the middle position of the right side of the first abutment plate 724, and the height of the second abutment plate 725 is half of the height of the first abutment plate 724. A first bent edge 726 is provided backward at the right side of the second abutment plate 725, a second bent edge 727 is provided to the left at the rear side of the first bent edge 726, and a third bent edge 728 is provided backward at the left side of the second bent edge 727;

[0080] In order to facilitate fixing the static contact 712, a fourth square through-hole 729 is longitudinally arranged on the front side of the first bent edge 726. The height of the fourth square through-hole 729 is consistent with the thickness of the right side of the fixing block 711, so that the static contact 712 can be inserted into the right side of the fixing block 711 through the first square through-hole 717. The front side of the fourth square through-hole 729 is flush with the front side of the first stop plate 724, and the rear side of the fourth square through-hole 729 is flush with the rear side of the second bent edge 727. The fourth square through hole 729 penetrates to the half of the first abutment plate 724 from right to left, the fourth square through hole 729 penetrates to four fifths of the second bent edge 727 from right to left, the static contact 712 is clamped on the right side of the fixed block 711 through the fourth square through hole 729, the front side of the first abutment plate 724 is flush with the front side of the fixed block 711, the right side of the first bent edge 726 is flush with the right side of the fixed block 711, and the rear side of the second bent edge 727 is flush with the rear side of the fixed block 711;

[0081] The left side of the first abutment plate 724 is located in the second square through hole 721 , and the left side wall of the fourth square through hole 729 located at the first abutment plate 724 abuts against the inner right side wall of the second square through hole 721 ;

[0082] The left side of the second bending edge 727 is located in the third rectangular through-hole 723 , and the left side wall of the fourth square through-hole 729 located at the second bending edge 727 abuts against the inner right side wall of the third rectangular through-hole 723 , so that the static contact 712 can be embedded in the right side of the fixing block 711 .

[0083] In order to facilitate the fixing of the wire, the distance from the front side of the second square through hole 721 of the fixing block 711 of the static contact assembly 7 located on the left front side to the rear side wall is twice the thickness of the first abutment plate 724. A vertical pressure strip 730 is fixedly provided on the left side of the rear side of the first abutment plate 724. The right side of the pressure strip 730 is flush with the left side wall of the trapezoidal groove 720. The front sides of the two spring sheets 713 are both located on the right side of the pressure strip 730.

[0084] The cross section of each spring piece 713 is "U"-shaped, and the "U"-shaped opening of the spring piece 713 faces right. The spring piece 713 is inserted between the limit block 715 and the "U"-shaped groove 718. The right side of the rear side of the spring piece 713 is against the left side of the front side of the second bent edge 727. The rear side of the spring piece 713 is located at the vertex end of the limit block 715 and is provided with a "V"-shaped bend 731. The left side wall of the "V"-shaped bend 731 is against the vertex end of the limit block 715. The front side of the spring piece 713 is bent backward to form a fourth The bending edge 732 is then bent forward to form the fifth bending edge 733. The fourth bending edge 732 and the arc of the spring piece 713 clamp the arc end of the limit block 715, so as to further fix the limit block 715. The left side of the fifth bending edge 733 abuts against the left side wall of the trapezoidal groove 720 of the fixing block 711. The front side of the fifth bending edge 733 is located at the half of the pressure strip 730 from the back to the front. When inserting the wire, it can play a role of giving way, and it is also convenient for the fifth bending edge 733 to press the wire tightly.

[0085] The cross section of each stopper 714 of the static contact assembly 7 located on the left front side is "L"-shaped, and the "L"-shaped opening of each stopper 714 is located on the right rear side. A chamfered right angle 734 is provided on the right side of the inner front side wall of the "L"-shaped opening of each stopper 714, and a hypotenuse is formed at the chamfered right angle 734 of each stopper 714. The hypotenuse of each stopper 714 abuts against the fifth bent edge 733 of the corresponding spring sheet 713, and a first chamfered corner 735 is provided at the chamfered right angle 734 of each stopper 714. A semicircular arc is formed between the fourth bent edge 732 and the fifth bent edge 733 of each spring sheet 713, and the first chamfered corner 735 of each stopper 714 is located within the semicircular arc of the corresponding spring sheet 713;

[0086] A stopper 736 is fixedly provided at the top and the bottom of each stopper 714. Each stopper 736 is integrally formed with the stopper 714. Each stopper 736 is provided at the spring piece 713 with a second rounded corner 737 which is cocentric with the first rounded corner 735. The stopper 736 limits the spring piece 713 and facilitates pushing the spring piece 713.

[0087] Each stopper 736 is in an "L" shape, and a third chamfer 738 is provided between the inner left wall and the inner front wall of the "L"-shaped opening of each stopper 736, and each third chamfer 738 is located at the opening of the third-party shaped slot 722 on the left side wall of the fixed block 711. When the stopper 714 is pushed, after a certain angle, the third chamfer 738 abuts against the opening of the third-party shaped slot 722 on the left side wall of the fixed block 711, that is, the stopper 714 cannot be pushed further, and the limit is completed;

[0088] A first slot 739 is provided on one side of each stopper 714 away from the spring piece 713 . The provision of the first slot 739 allows an operator to insert a flat-blade screwdriver into the first slot 739 to push the stopper 714 .

[0089] The front upper end and the front lower end of the left side portion, the rear upper end and the rear lower end of the left side portion, the front upper end and the front lower end of the right side portion, and the rear upper end and the rear lower end of the right side portion of the base 5 are all provided with a second circular through hole 513 and a fifth square through hole 514 corresponding to the fixing blocks 711 at the four corners;

[0090] The second circular through hole 513 is used for inserting the electric wire;

[0091] The fifth square through-hole 514 is used to limit the left side of the stopper 714 and facilitate the movement of the stopper 714 in the fifth square through-hole 514. Each fifth square through-hole 514 is offset 0.3 mm away from the second circular through-hole 513.

[0092] A second slot 740 is provided on one side of each stop block 714 away from the spring piece 713 and close to the second circular perforation 513. A side of each fifth square perforation 514 of the base 5 close to its corresponding second circular perforation 513 is located in the second slot 740 of the stop block 714. When the stop block 714 is inserted into the outward fixed block 711 of the base 5, the stop block 714 is tilted backward. Then the stop block 714 is inserted with force. At this time, the stop block 714 is inserted into the third rectangular slot 722 of the fixed block 711, and a side of the fifth square perforation 514 close to its corresponding second circular perforation 513 is located in the second slot 740 of the stop block 714.

[0093] When the static contact 712, the two spring pieces 713, and the two limit blocks 715 are fixedly installed on the fixed block 711, taking the static contact assembly 7 on the left front side as an example, the static contact 712 is first inserted into the right side of the fixed block 711 through the first square through-hole 717, so that the front side of the first abutment plate 724 of the static contact 712 is flush with the front side of the fixed block 711, the right side of the first bent edge 726 of the static contact 712 is flush with the right side of the fixed block 711, and the rear side of the second bent edge 727 of the static contact 712 is flush with the rear side of the fixed block 711; the left side of the first abutment plate 724 is located in the second square through-hole 721, and the fourth square through-hole 729 is located on the left side wall of the first abutment plate 724 It abuts against the inner right side wall of the second square perforation 721; the left side of the second bent edge 727 is located in the third rectangular perforation 723, and the left side wall of the fourth square perforation 729 located at the second bent edge 727 abuts against the inner right side wall of the third rectangular perforation 723, and then the two spring clips 713 are respectively clamped in the two "U"-shaped grooves 718 of the fixed block 711, and the front side of the fifth bent edge 733 is located at the halfway point from the back to the front of the pressure strip 730, and the right side of the rear side of the spring clip 713 abuts against the left side of the front side of the second bent edge 727 of the static contact 712, and then the two limit blocks 715 are respectively inserted into the second slots 719 of the fixed block 711 to complete the limiting of the two spring clips 713.

[0094] A first clearance groove 515 is provided between each first square slot 511 and its corresponding first square slide groove 512, and the third bent edge 728 of each stationary contact 712 is located in the first square slide groove 512 through the first clearance groove 515;

[0095] The third bent edge 728 of each stationary contact 712 is located in the first square slide groove 512 and a magnet 8 is fixedly provided on the side close to the rotating shaft 3. The front and rear sides of each first square slide groove 512 close to the rotating shaft 3 are provided with a second clearance groove 516, and each magnet 8 is clamped in its corresponding second clearance groove 516;

[0096] The longitudinal vertical cross-section of each magnet 8 is "C"-shaped, and the depth of the "C"-shaped opening of each magnet 8 is two-thirds of the thickness of its corresponding third bent edge 728. Each third bent edge 728 is clamped inside the "C"-shaped opening of its corresponding magnet 8.

[0097] The arc extinguishing by magnet mainly includes the following operation steps: 1. Contact point separation stage, the moving contact and the static contact are separated, and the arc is generated at the same time; 2. Arc exposure stage, the arc is exposed to the air, and the arc power continues to increase; 3. Magnetic field formation stage, the magnet is attracted, the arc movement direction changes accordingly, and the arc power continues to decrease; 4. Arc disappearance stage, the arc is extinguished, and the magnet attraction force tends to zero. That is, when the moving contact and the static contact are separated, the magnet will generate a magnetic field, and the arc will be intercepted in the magnetic field. Due to the continuous attenuation of the arc power, the attraction force generated by the magnet is also continuously reduced until the arc is extinguished.

[0098] In order to make the moving contact assembly 6 displace more smoothly, each moving contact assembly 6 includes a moving contact seat 611 and two springs 612. The moving contact seat 611 slides in the first square slide groove 512. The two springs 612 are laterally located at the front and rear sides of the first square slide groove 512 respectively. One end of the two springs 612 respectively abuts against the front and rear sides of the moving contact seat 611 away from the third bending edge 728, and one end of the two springs 612 respectively abuts against the inner side wall of the first square slide groove 512.

[0099] Specific implementation process:

[0100] Step 1: insert the wire through the second circular through hole 513 of the base 5, and the wire passes through the first circular through hole 716 of the fixing block 711. Then the wire lifts up the fifth bent edge 733 of the corresponding spring sheet 713, and the fifth bent edge 733 is deformed. When the wire is inserted into the trapezoidal groove 720 of the fixing block 711, the force of the fifth bent edge 733 of the spring sheet 713 rebounds and presses the wire against the pressure strip 730. At this time, the wire is pressed by the fifth bent edge 733 of the corresponding spring sheet 713 and the pressure strip 730 to produce a "Z" shape deformation, thereby completing the fixing of the wire.

[0101] Step 2: When the wire needs to be pulled out, the block 714 is pushed into the base 5 through the first slot 739 of the block 714. At this time, the first chamfered corner 735 of the block 714 slides at the semicircular arc of its corresponding spring piece 713, and the spring piece 713 produces elastic deformation. At this time, the wire is pulled out, and at the same time, the force against the block 714 is cancelled, and the bent edge of the spring piece 713 is reset.

[0102] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A quick-plug transfer switch, comprising a plurality of contact boxes (1) arranged in an array in a vertical direction, a panel frame (2) located on the top of the topmost contact box (1), a rotating shaft (3) inserted into the panel frame (2) and the plurality of contact boxes (1), and a handle (4) fixed on the top of the rotating shaft (3), characterized in that: Each group of the contact boxes (1) comprises a base (5), two groups of moving contact assemblies (6) and stationary contact assemblies (7) respectively located at four corners of the base (5), and the two groups of the moving contact assemblies (6) are respectively located at the middle position of the left side and the middle position of the right side inside the base (5); The cross section of the base (5) is square, and first square slots (511) are provided at the four corners of the bottom of the base (5), and the four stationary contact assemblies (7) are respectively inserted into the four first square slots (511); and first square slide grooves (512) are provided at the middle positions of the left and right sides of the bottom of the base (5), and the two groups of movable contact assemblies (6) are respectively slidably inserted into the first square slide grooves (512); The four stationary contact assemblies (7) are respectively placed in a mirror-symmetrical manner along the transverse center axis and the longitudinal center axis of the base (5); the stationary contact assembly (7) located on the left front side comprises a fixed block (711), a stationary contact (712), two spring sheets (713), two abutting blocks (714), and two limit blocks (715); the stationary contact (712) is fixedly sleeved on the front side, right side, and rear side of the fixed block (711); the two spring sheets (713) are respectively clamped on the left side of the inner upper end and lower end of the fixed block (711); the front sides of the two spring sheets (713) are respectively abutted against the left side of the corresponding stationary contact (712); and the two spring sheets (713) are respectively clamped on the left side of the inner upper end and the lower end of the fixed block (711). The limit blocks (715) are respectively clamped on the rear sides of the two corresponding spring sheets (713), and the two limit blocks (715) are respectively inserted into the rear sides of the internal upper end and the lower end of the fixed block (711). The front upper end and the front lower end of the left side of the fixed block (711) are both provided with a first circular through hole (716), and each first circular through hole (716) corresponds to the position where the corresponding spring sheet (713) and the static contact (712) abut against each other. The two abutting blocks (714) are respectively inserted into the rear upper end and the rear lower end of the left side of the fixed block (711), and the two abutting blocks (714) abut against the corresponding spring sheets (713). The fixing block (711) of the static contact assembly (7) located on the left front side is in the form of a square block, the upper right end and the lower right end of the front side of the fixing block (711) are both provided with a first square through hole (717), and the transverse vertical cross section of the fixing block (711) is in a "convex" shape, with the convex portion located on the right side; A "U"-shaped groove (718) is provided on the rear side of the left side of the top and the rear side of the left side of the bottom of the fixing block (711), and the opening of each "U"-shaped groove (718) faces rightward, and the bottom of the "U"-shaped groove (718) at the upper end of the fixing block (711) is flush with the inner bottom wall of the corresponding first square through hole (717), and the top of the "U"-shaped groove (718) at the lower end of the fixing block (711) is flush with the inner top wall of the corresponding first square through hole (717); A second slot (719) is provided at the bottom of the "U"-shaped slot (718) at the upper end of the fixed block (711) and at the top of the "U"-shaped slot (718) at the lower end of the fixed block (711); the cross section of each second slot (719) is in the shape of a water drop; the vertex end of each second slot (719) is located on the right side; the arc end of each second slot (719) is concentric with the "U"-shaped slot (718); the inner rear side wall of each second slot (719) is parallel to the rear side wall of the corresponding "U"-shaped slot (718); the two limit blocks (715) are both cylinders with a water drop-shaped cross section; the two limit blocks (715) are respectively inserted into the two second slots (719); The left side of the top front side and the left side of the bottom front side of the fixing block (711) are both provided with right-angled trapezoidal grooves (720), the hypotenuse of each trapezoidal groove (720) is located on the left side and the acute angle is located on the rear side, and each trapezoidal groove (720) is connected to its corresponding first square through hole (717) and "U"-shaped groove (718); A second square through hole (721) is provided on the front side of the top of the fixing block (711), the second square through hole (721) passes through the top and bottom of the fixing block (711), and the second square through hole (721) is connected to the two trapezoidal grooves (720); The first circular through-holes (716) provided at the front upper end and the front lower end of the left side portion of the fixing block (711) are both connected to the second square through-hole (721); the first circular through-hole (716) at the upper end is connected to the trapezoidal groove (720) at the upper end; and the first circular through-hole (716) at the lower end is connected to the trapezoidal groove (720) at the lower end; A third-party shaped slot (722) is provided at the rear upper end and the rear lower end of the left side portion of the fixing block (711); the third-party shaped slot (722) at the upper end is connected to the trapezoidal slot (720) at the upper end, and the third-party shaped slot (722) at the lower end is connected to the trapezoidal slot (720) at the lower end; the right side of each third-party shaped slot (722) is located at half of the fixing block (711) from left to right; the third-party shaped slot (722) at the upper end cuts the inner bottom wall of the corresponding trapezoidal slot (720) to a depth of 1 mm, and the third-party shaped slot (722) at the lower end cuts the inner top wall of the corresponding trapezoidal slot (720) to a depth of 1 mm; A third rectangular through hole (723) is provided on the rear side of the bottom wall of the first square through hole (717) at the upper end, and the rear side of the third rectangular through hole (723) is flush with the rear side of the fixing block (711).

2. The quick-plug transfer switch according to claim 1, characterized in that: The stationary contact (712) of the stationary contact assembly (7) located on the left front side comprises a first butt plate (724), the first butt plate (724) being placed vertically in a horizontal direction, a second butt plate (725) being provided at the middle position of the right side of the first butt plate (724), the height of the second butt plate (725) being half of the height of the first butt plate (724), a first bent edge (726) being provided rearwardly at the right side of the second butt plate (725), a second bent edge (727) being provided leftwardly at the rear side of the first bent edge (726), a third bent edge (728) being provided rearwardly at the left side of the second bent edge (727), a fourth square through hole (729) being placed longitudinally is provided at the front side of the first bent edge (726), the height of the fourth square through hole (729) being consistent with the thickness of the right side of the fixed block (711), The front side of the fourth square perforation (729) is flush with the front side of the first support plate (724), the rear side of the fourth square perforation (729) is flush with the rear side of the second bent edge (727), the fourth square perforation (729) penetrates to half of the first support plate (724) from right to left, the fourth square perforation (729) penetrates four fifths of the second bent edge (727) from right to left, the static contact (712) is clamped on the right side of the fixed block (711) through the fourth square perforation (729), the front side of the first support plate (724) is flush with the front side of the fixed block (711), the right side of the first bent edge (726) is flush with the right side of the fixed block (711), and the rear side of the second bent edge (727) is flush with the rear side of the fixed block (711); The left side of the first abutment plate (724) is located in the second square perforation (721), and the left side wall of the fourth square perforation (729) located at the first abutment plate (724) abuts against the inner right side wall of the second square perforation (721); The left side of the second bending edge (727) is located inside the third square perforation (723), and the left side wall of the fourth square perforation (729) located at the second bending edge (727) abuts against the inner right side wall of the third square perforation (723).

3. The quick-plug transfer switch according to claim 2, characterized in that: The distance from the front side of the second square through hole (721) of the fixed block (711) of the static contact assembly (7) located on the left front side to the rear side wall is twice the thickness of the first abutment plate (724); a vertical pressure strip (730) is fixedly provided on the left side of the rear side of the first abutment plate (724); the right side of the pressure strip (730) is flush with the left side wall of the trapezoidal groove (720); and the front sides of the two spring sheets (713) are both located on the right side of the pressure strip (730); The cross section of each of the spring sheets (713) is U-shaped. The U-shaped opening of the spring sheet (713) faces rightward. The spring sheet (713) is inserted between the limiting block (715) and the U-shaped groove (718). The right side of the rear side of the spring sheet (713) abuts against the left side of the front side of the second bent edge (727). The rear side of the spring sheet (713) is provided with a V-shaped bend (731) at the vertex end of the limiting block (715). The left side wall of the V-shaped bend (731) abuts against the limiting block (715). The front side of the spring sheet (713) is bent backward to form a fourth bent edge (732), and then bent forward to form a fifth bent edge (733). The fourth bent edge (732) and the arc of the spring sheet (713) clamp the arc end of the limit block (715). The left side of the fifth bent edge (733) is abutted against the left side wall of the trapezoidal groove (720) of the fixing block (711). The front side of the fifth bent edge (733) is located at half of the pressure strip (730) from back to front.

4. The quick-plug transfer switch according to claim 3, characterized in that: The cross section of each of the abutting blocks (714) of the static contact assembly (7) located on the left front side is "L"-shaped, the "L"-shaped opening of each of the abutting blocks (714) is located on the right rear side, a chamfered right angle (734) is provided on the right side of the inner front side wall of the "L"-shaped opening of each of the abutting blocks (714), a hypotenuse is formed at the chamfered right angle (734) of each of the abutting blocks (714), the hypotenuse of each of the abutting blocks (714) is abutted against the fifth bent edge (733) of its corresponding spring sheet (713), a first chamfered corner (735) is provided at the chamfered right angle (734) of each of the abutting blocks (714), a semicircular arc is formed between the fourth bent edge (732) and the fifth bent edge (733) of each of the spring sheets (713), and the first chamfered corner (735) of each of the abutting blocks (714) is located within the semicircular arc of its corresponding spring sheet (713); A stopper (736) is fixedly provided at the top and the bottom of each stopper (714); each stopper (736) is integrally formed with the stopper (714); and each stopper (736) is provided with a second rounded corner (737) cocentric with the first rounded corner (735) at the spring sheet (713); Each of the stoppers (736) is in an "L" shape, and a third chamfer (738) is provided between the inner left side wall and the inner front side wall of the "L"-shaped opening of each of the stoppers (736), and each of the third chamfers (738) is located at the opening of the third third-shaped slot (722) on the left side wall of the fixing block (711); A first slot (739) is provided on one side of each stop block (714) away from the spring sheet (713).

5. The quick-plug transfer switch according to claim 4, characterized in that: The front upper end and the front lower end of the left side portion of the base (5), the rear upper end and the rear lower end of the left side portion, the front upper end and the front lower end of the right side portion, and the rear upper end and the rear lower end of the right side portion are all provided with second circular perforations (513) and fifth square perforations (514) corresponding to the fixing blocks (711) at the four corners, and each of the fifth square perforations (514) is offset 0.3 mm away from the second circular perforations (513); A second slot (740) is provided on a side of each of the stop blocks (714) away from the spring sheet (713) and close to the second circular through hole (513); and a side of each fifth square through hole (514) of the base (5) close to its corresponding second circular through hole (513) is located in the second slot (740) of the stop block (714).

6. The quick-plug transfer switch according to claim 5, characterized in that: A first clearance groove (515) is provided between each of the first square slots (511) and its corresponding first square slide groove (512), and the third bent edge (728) of each of the static contacts (712) is located in the first square slide groove (512) through the first clearance groove (515); The third bent edge (728) of each of the stationary contacts (712) is located in the first square slide groove (512) and is fixedly provided with a magnet (8) on the side close to the rotating shaft (3); the front side and the rear side of each of the first square slide grooves (512) close to the rotating shaft (3) are provided with a second clearance groove (516), and each of the magnets (8) is clamped in its corresponding second clearance groove (516); The longitudinal cross-section of each magnet (8) is in a "C" shape, the depth of the "C"-shaped opening of each magnet (8) is two-thirds of the thickness of the corresponding third bent edge (728), and each third bent edge (728) is snap-fitted into the interior of the "C"-shaped opening of the corresponding magnet (8).

7. The quick-plug transfer switch according to claim 6, characterized in that: Each moving contact assembly (6) comprises a moving contact seat (611) and two springs (612); the moving contact seat (611) is slidably located in the first square slide groove (512); the two springs (612) are respectively located transversely at the front side and the rear side inside the first square slide groove (512); one end of the two springs (612) respectively abuts against the front side and the rear side of the moving contact seat (611) away from the third bending edge (728); and one end of the two springs (612) respectively abuts against the inner side wall of the first square slide groove (512).

8. The quick-plug transfer switch according to claim 7, characterized in that: The top of the base (5) is provided with a circle of grooves (517), and the bottom of the base (5) is fixedly provided with a circle of protrusions (518) corresponding to the grooves (517), and the protrusions (518) of the base (5) located at the top are inserted into the grooves (517) of the base (5) located at the bottom.

9. The quick-plug transfer switch according to claim 8, characterized in that: An upper cover (9) is provided on the top of the uppermost base (5), and a lower cover (10) is provided on the bottom of the lowermost base (5).

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