Drawer cabinet circuit distribution and switching device

Abstract

A drawer cabinet circuit distribution and switching device includes a moving plug, a stationary plug, and a busbar box. The busbar box includes a housing and a busbar disposed within the housing. The stationary plug is disposed within the housing and connected to the busbar. The moving plug is mounted on the drawer and correspondingly positioned to the stationary plug. The device is characterized by further including a door device disposed between the moving plug and the stationary plug. The door device is mounted on the busbar box and correspondingly positioned to the stationary plug. The door device includes a barrel and a blocking mechanism. The barrel is cylindrical and has an axially penetrating channel. The blocking mechanism includes an elastic baffle at one end of the barrel. The elastic baffle includes multiple elastic movable pieces, one end of which is connected to the barrel, and the free end of the other end extends towards the axis of the barrel to block the channel. This improves the installation protection capability of the circuit distribution and switching device and reduces the risk of electric shock.

Description

Technical Field

[0001] This invention relates to the field of switching electrical appliances, and in particular to a circuit distribution and switching device for a drawer cabinet. Background Technology

[0002] Existing drawer cabinet circuit distribution and conversion devices generally include moving plugs, stationary plugs, and junction boxes. The stationary plugs are installed in the junction boxes, and the moving plugs are installed on the drawers. The drawer cabinet can drive the moving plugs and stationary plugs to plug in and cooperate. The moving plugs are energized when they are plugged in and de-energized when they are separated.

[0003] The existing circuit distribution and conversion devices for drawer cabinets have a low protection level. After the moving plug is pulled out from the stationary plug, the energized stationary plug is not sealed, which cannot achieve the IP40 protection level. The risk of electric shock to people is relatively high. Therefore, how to improve the protection capability of power conversion devices is a problem that needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a drawer cabinet circuit distribution and switching device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A drawer cabinet circuit distribution and switching device includes a moving plug, a stationary plug, and a busbar box. The busbar box includes a housing and a busbar disposed within the housing. The stationary plug is disposed within the housing and connected to the busbar. The moving plug is mounted on the drawer and correspondingly arranged with respect to the stationary plug. The device is characterized by further including a door device disposed between the moving plug and the stationary plug. The door device is mounted on the busbar box and correspondingly arranged with respect to the stationary plug. The door device includes a barrel and a blocking mechanism. The barrel is cylindrical and has a channel extending axially through the barrel. The blocking mechanism includes an elastic baffle at one end of the barrel. The elastic baffle includes multiple elastic movable pieces, one end of which is connected to the barrel, and the free end of the other end extends towards the axis of the barrel to block the channel.

[0007] Preferably, the elastic baffle is integrally formed, and multiple tangents are formed on the elastic baffle to divide the elastic baffle into multiple elastic movable pieces.

[0008] Preferably, the elastic baffle is a circular baffle, and a tangent line passing through the center of the elastic baffle and forming a cross-shaped structure is opened on the elastic baffle. The tangent line divides the elastic baffle into four fan-shaped elastic movable pieces.

[0009] Preferably, the blocking mechanism further includes a rubber ring, and one side of the free end of the elastic movable piece is provided with a protrusion. The protrusions of multiple elastic movable pieces are combined to form a raised column. The rubber ring is fitted on the raised column to drive the free end of the elastic movable piece to reset and close the channel.

[0010] Preferably, each elastic movable piece has an arc-shaped limiting groove on its protrusion, and the limiting grooves of multiple elastic movable pieces are interconnected to form a ring structure located on the protruding column, and the rubber ring is sleeved on the ring structure.

[0011] Preferably, the protrusion of the elastic movable piece is located inside the channel facing the barrel, and the outer sides of the multiple elastic movable pieces are provided with inclined surfaces, forming a concave shape at the center of the elastic baffle.

[0012] Preferably, the busbar box is provided with a valve mounting seat corresponding to the stationary plug-in. The end of the stationary plug-in near the moving plug-in is inserted into the valve mounting seat. The barrel of the valve device is sleeved on the outside of the valve mounting seat, and the elastic baffle of the valve device is limited between the barrel and the valve mounting seat.

[0013] Preferably, the barrel includes a first cylinder and a first ring disposed at one end of the first cylinder. The first ring is coaxially disposed with the first cylinder, and the inner diameter of the first ring is smaller than the inner diameter of the first cylinder. The elastic baffle is installed inside the first cylinder and engages with the first ring for limiting. A first locking block is provided on the inner side of the first ring. The elastic baffle is circular, and its circumferential side is a second ring. The second ring is provided with a first locking groove that engages with the first locking block. A third locking groove is provided on the valve mounting seat. The end of the first locking block extends out of the first locking groove and engages with the third locking groove. A second annular limiting groove is provided at the end of the valve mounting seat. An annular limiting ring that engages with the second annular limiting groove is provided on the second ring. The elastic baffle is limited between the first ring and the busbar box, and the annular limiting ring is embedded in the second annular limiting groove.

[0014] Preferably, the busbars in the busbar box include an incoming busbar and an outgoing busbar, which are arranged in parallel and spaced apart. Both ends of the incoming busbar are connected to a stationary connector, and the incoming busbar is also connected to a main incoming connector. One end of the outgoing busbar is connected to a stationary connector, and the other end is connected to a cable splice. The outer shell of the busbar box includes a first limiting plate and a second limiting plate that interlock. The inner side of the second limiting plate has a busbar slot for mounting the busbar and a connecting support for mounting the stationary connector. The second limiting plate has a second separating protrusion between adjacent busbars, and the first limiting plate has a first separating protrusion corresponding to the second separating protrusion. The first limiting plate has a door mounting seat corresponding to the position of the connecting support. The first separating protrusion and the second separating protrusion isolate adjacent busbars. The incoming busbar has an insulating sleeve corresponding to the position of the main incoming connector connected to the adjacent busbar, and / or the outgoing busbar has an insulating sleeve corresponding to the position of the cable splice connected to the adjacent busbar.

[0015] Preferably, the outer casing of the busbar box is provided with a sealing plate on the valve mounting base corresponding to the N phases, and / or the busbar box is provided with heat dissipation holes that communicate with the outside.

[0016] The drawer cabinet circuit distribution and conversion device created by this invention adopts the valve device created by this invention. The valve device includes a hollow barrel and an elastic baffle formed by multiple elastic movable plates. It has a simple structure and low cost. After the moving plug and the stationary plug are separated, the valve device automatically closes, so that the stationary plug is effectively protected. This improves the installation protection capability of the circuit distribution and conversion device, reduces the risk of electric shock, and thus achieves effective protection for the circuit separation and conversion device, which can reach the IP40 protection level.

[0017] In addition, the valve device also includes a rubber ring. One side of the free end of the elastic movable plate is provided with a protrusion. The protrusions of multiple elastic movable plates are combined to form a raised post. The rubber ring is fitted on the raised post to drive the elastic movable plate to reset and close the channel. By setting the rubber ring, the reliability and sealing performance of the elastic baffle are improved, and the service life of the blocking mechanism is increased.

[0018] In addition, the barrel and the valve mounting seat of the busbar box are engaged, and the elastic baffle is limited by the barrel and the valve mounting seat together, which makes the structure simple and easy to assemble. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the assembly structure of the drawer cabinet circuit distribution and switching device and the power distribution cabinet in Embodiment 1.

[0020] Figure 2 yes Figure 1 Enlarged diagram of section A in the middle;

[0021] Figure 3 This is a schematic diagram of the moving plug structure of the drawer cabinet circuit distribution and switching device in Embodiment 1;

[0022] Figure 4 This is an exploded view of the moving plug-in in Example 1;

[0023] Figure 5 This is a cross-sectional view of the moving plug-in structure in Embodiment 1;

[0024] Figure 6 This is a schematic diagram of the second limiting seat structure in Embodiment 1;

[0025] Figure 7 This is another exploded view of the moving plug-in in Embodiment 1;

[0026] Figure 8 This is a structural schematic diagram of the static plug-in in Embodiment 1;

[0027] Figure 9 This is a schematic diagram of the elastic clamping piece of the static plug-in in Embodiment 1;

[0028] Figure 10This is a schematic diagram of the terminal block structure of the static plug-in in Embodiment 1;

[0029] Figure 11 This is an exploded structural diagram of the valve device in Embodiment 1;

[0030] Figure 12 This is a schematic diagram of the opening structure of the valve device in Embodiment 1;

[0031] Figure 13 This is a schematic diagram of the closed structure of the valve device in Embodiment 1;

[0032] Figure 14 This is a schematic diagram of the baffle structure of the valve device in Embodiment 1;

[0033] Figure 15 This is a schematic diagram of the valve barrel structure of the valve device in Embodiment 1;

[0034] Figure 16 This is a schematic diagram of the overall structure of the busbar box in Embodiment 1;

[0035] Figure 17 This is an exploded structural diagram of the busbar box in Embodiment 1;

[0036] Figure 18 yes Figure 16 Enlarged view of the structure of section B in the middle;

[0037] Figure 19 This is a schematic diagram of the first limiting plate structure of the busbar box in Embodiment 1;

[0038] Figure 20 This is a schematic diagram of the insulation sleeve structure of the busbar box in Embodiment 1;

[0039] Figure 21 This is a side view of the busbar box in Embodiment 1.

[0040] Figure 22 This is a structural schematic diagram of the moving plug-in at one angle in Embodiment 2;

[0041] Figure 23 This is a structural schematic diagram of the moving plug-in from another angle in Embodiment 2;

[0042] Figure 24 It is the dynamic plug-in of Embodiment 2. Figure 22 A bottom view;

[0043] Figure 25 This is a structural schematic diagram of the moving plug-in at one angle in Embodiment 3;

[0044] Figure 26 This is a structural schematic diagram of the moving plug-in from another angle in Embodiment 3;

[0045] Figure 27 It is the dynamic plug-in of embodiment three. Figure 25 A bottom view.

[0046] Figure 28 This is a schematic diagram of the static plug-in structure of Embodiment 4;

[0047] Figure 29 This is a schematic diagram of the static plug-in structure of Embodiment 5;

[0048] Figure 30 This is a schematic diagram of the static plug-in structure of Embodiment Six;

[0049] Figure 31 This is a schematic diagram of the valve device in Embodiment 7;

[0050] Figure 32 This is an exploded view of the valve device in Embodiment 7;

[0051] Figure 33 This is a schematic diagram showing the internal structure of the valve device in Embodiment 7;

[0052] Figure 34 This is a cross-sectional view of the elastic baffle of the valve device in Embodiment 7;

[0053] Figure 35 This is a schematic diagram of the busbar box structure of the drawer cabinet circuit distribution and switching device in Embodiment 7;

[0054] Figure 36 This is a schematic diagram of the structure of the valve mounting base on the busbar box in Embodiment 7. Detailed Implementation

[0055] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the drawer cabinet circuit distribution and switching device of the present invention. The drawer cabinet circuit distribution and switching device of the present invention is not limited to the descriptions in the following embodiments.

[0056] Example 1, as Figures 1-2As shown, a drawer cabinet circuit distribution and switching device includes a moving plug 1, a stationary plug 2, a busbar box 3, and a door device 4. The busbar box 3 includes a housing and a busbar disposed within the housing. The stationary plug 2 is disposed within the housing and connected to the busbar. The moving plug 1 is installed on the drawer of the drawer cabinet and is correspondingly arranged with the stationary plug 2. The door device 4 is disposed between the moving plug 1 and the stationary plug 2. The door device 4 has a channel communicating with the stationary plug 2 and a blocking mechanism capable of closing and opening the channel. When the blocking mechanism closes the channel, it affects the stationary plug 2. For protection, the movable plug 1 is installed on the drawer of the drawer cabinet and is correspondingly set with the stationary plug 2. The drawer can drive the movable plug 1 to move toward the stationary plug 2, so that the movable plug 1 drives the blocking mechanism of the door device 4 to open the passage and passes through the passage of the door device 4 to plug into the stationary plug 2, connecting the wiring in the drawer cabinet with the busbar in the bus box 3, so that the electrical components in the drawer cabinet are energized; the drawer can drive the movable plug 1 away from the stationary plug 2 to separate the movable plug 1 from the stationary plug 2 and de-energize it. At this time, the blocking mechanism resets and closes the passage.

[0057] An improvement of the drawer cabinet circuit distribution and conversion device of the present invention is that a door device 4 is provided on the bus box 3. The door device 4 is located between the moving plug 1 and the stationary plug 2. After the moving plug 1 and the stationary plug 2 are separated, the door device 4 automatically closes, so that the stationary plug 2 is effectively protected. This improves the installation protection capability of the circuit distribution and conversion device, reduces the risk of electric shock, and thus achieves effective protection for the circuit separation conversion device, reaching the IP40 protection level.

[0058] like Figure 2 As shown, in this embodiment, the moving plug 1 includes a pin, and the stationary plug 2 includes a clamping socket 28. The pin of the moving plug 1 is inserted into the clamping socket 28 of the stationary plug 2 for mating. See also Figure 2 , 16 -18, Preferably, one end of the stationary insert 2 is connected to the busbar inside the busbar box 3, and the other end, which has a clamping hole 28, protrudes from the outer side of the outer casing. The valve device 4 is fitted onto the outer side of the other end of the stationary insert 2 and fixedly installed on one side of the outer casing. Preferably, the valve device 4 is snap-fitted to the outer casing of the busbar box 3. The outer casing of the busbar box 3 has a valve mounting seat 38 at the position corresponding to the stationary insert 2. The other end of the stationary insert 2 protrudes from the valve mounting seat 38, and the valve device 4 is snap-fitted to the valve mounting seat 38. Of course, the valve device 4 can also be fixedly connected to the busbar box 3 in other ways.

[0059] It should be noted that in this embodiment, the connector with pins serves as the moving connector 1, and the connector with clamping holes 28 serves as the stationary connector 2. Obviously, depending on the needs, the connector with clamping holes 28 can also be installed on the drawer as a moving connector, and the corresponding connector with pins serves as the stationary connector 2; both fall within the protection scope of this invention. That is, a drawer cabinet circuit distribution and conversion device includes two connectors that are mutually plugged in. One of the two connectors is fixedly installed as a stationary connector 2, and the other is installed on the drawer as a moving connector 1 and correspondingly positioned with the stationary connector 2. One connector includes pins, and the other connector includes clamping holes 28.

[0060] Another improvement of this invention lies in the connector that serves as the moving plug 1, such as Figures 3-7 As shown, a preferred embodiment of a moving connector 1 is provided. The connector includes a mounting base and pins mounted on the mounting base. The pins include a wiring portion 13 and a plug portion 14 connected to the wiring portion 13. An arc-blocking sleeve 125 is provided on the mounting base. The arc-blocking sleeve 125 is arranged in a ring outside the plug portion 14, and the length of the arc-blocking sleeve 125 is greater than or equal to the length of the plug portion 14. The arc-blocking sleeve 125 not only provides reliable arc blocking between phases and between phase and ground, but also protects the plug portion 14 from damage during transportation and installation. As mentioned above, this connector, which serves as the moving connector 1, can obviously also be used as the stationary connector 2.

[0061] Preferably, when the moving plug 1 and the stationary plug 2 are plugged in, the arc-blocking sleeve 125 is fitted on the outside of the valve device 4. The gap between the arc-blocking sleeve 125 and the plug-in part 14 also serves to cooperate with the valve device 4 and provide protection, thereby improving the safety of the moving plug 1 and the stationary plug 2 when plugged in.

[0062] Preferred, such as Figure 4-7 As shown, in a preferred embodiment of the mounting base, the pin is easy to install and has high reliability. The mounting base includes a first limiting seat 11 and a second limiting seat 12. The first limiting seat 11 has a wiring arc-blocking groove for accommodating the wiring part 13. The wiring arc-blocking groove has a first wiring hole 112 that penetrates the first limiting seat 11. The second limiting seat 12 includes a second limiting base plate 126. The second limiting base plate 126 has a second through hole 121 for the insertion part 14 to pass through. The arc-blocking sleeve 125 is provided around the second through hole 121 on one side of the second limiting base plate 126. The other side of the second limiting base plate 126 is connected to the first limiting seat 11. The insertion part 14 of the pin passes through the second through hole 121 of the second limiting seat 12 and extends into the arc-blocking sleeve 125. The wiring part 13 is installed in the wiring arc-blocking groove. The second limiting seat 12 is fixedly connected to the first limiting seat 11 and fixes the pin.

[0063] Preferred, such as Figure 4As shown, in this embodiment, both the insertion portion 14 and the wiring portion 13 of the pin are cylindrical. The insertion portion 14 is a cylindrical copper pin, and the wiring portion 13 is a cylindrical copper tube. Furthermore, an angled bevel 141 is provided at the end of the insertion portion 14 to facilitate insertion. Furthermore, a first retaining ring 131 and a second retaining ring 132 with a diameter larger than that of the wiring portion 13 are respectively protruding from the outer sides of both ends of the wiring portion 13. The cavity between the first retaining ring 131 and the second retaining ring 132 within the wiring portion 13 forms a conductor crimping area for cable crimping. The wiring portion 13 is connected to the cable by crimping. Because the diameter of the conductor crimping area is small, it ensures that the conductor crimping area does not contact the inner wall of the wiring arc-blocking groove. Because the surface of the conductor crimping area is irregular after the cable is cold-pressed, the conductor crimping area is separated from the inner wall of the wiring arc-blocking groove by the obstruction of the first retaining ring 131 and the second retaining ring 132, making the pin's mounting axis horizontal. This ensures that the axis deviation between the pin and the stationary insert 2 is small, resulting in precise installation.

[0064] Preferred, such as Figure 4-6 As shown, the second limiting seat 12 fixes the pin through the second retaining ring 132 of the wiring part 13. The side of the second retaining ring 132 near the insertion part 14 is the first surface, and the other side is the second surface. On the side of the second limiting base plate 126 connected to the first limiting seat 11, there is a pressing protrusion 122 that cooperates with the first surface at the position corresponding to the outer side of the second through hole 121. On the outer side of the pressing protrusion 122, there is a first barb 123 that engages with the second surface. The pressing protrusion 122 and the first barb 123 fix the pin on the second limiting seat 12. After the pin is inserted into the second through hole 121, the pressing protrusion 122 is in contact with the first surface, and the first barb 123 engages with the second surface, thereby effectively restricting the movement direction of the pin.

[0065] Preferably, the mounting base is provided with a plurality of pins, and one side of the mounting base is provided with a plurality of protruding arc-blocking sleeves 125 corresponding to the plurality of pins respectively. Specifically, the second limiting seat 12 includes a second limiting base plate 126, on which a plurality of second through holes 121 are provided for the insertion part 14 to pass through. On one side of the second limiting base plate 126, a plurality of arc-blocking sleeves 125 are provided corresponding to the second through holes 121. On the other side of the second limiting base plate 126, a second locking block 124 is provided to engage with the first limiting seat 11. The first limiting seat 11 includes a first limiting base plate 116, on one side of the first limiting base plate 116 is fixedly engaged with the second limiting base plate 126 and is provided with a second locking groove 127 to engage with the second locking block 124. On the other side of the first limiting base plate 116, a plurality of protruding arc-blocking cylinders 111 are provided. The cavities of the plurality of arc-blocking cylinders 111 form a plurality of the wiring arc-blocking grooves. The cavities of the arc-blocking cylinders 111 penetrate the arc-blocking cylinders 111 and the first limiting base plate 116. One end of the cavity is used to install the wiring part 13, and the other end forms a first wiring hole 112. Preferably, the length of the arc-blocking cylinder 111 is greater than or equal to the length of the wiring portion 13.

[0066] When installing the pin, the insertion part 14 passes through the second through hole 121 of the second limiting seat 12 and extends into the arc-blocking sleeve 125. The pressing protrusion 122 and the first barb 123 fix the pin on the second limiting seat 12. After the cable passes through the first wiring hole 112, it is inserted into the cavity of the wiring part 13 for crimping. The wiring part 13 is installed inside the arc-blocking cylinder 111 of the first limiting seat 11. The first limiting base plate 116 and the second limiting base plate 126 are snapped together and fixed. The installation and wiring are convenient and the arc-blocking performance is excellent.

[0067] Another improvement of this invention lies in the connector used as the static plug-in 2, such as Figure 2 , Figure 8-10As shown, a preferred embodiment of a stationary plug-in 2 is provided. The plug-in includes a terminal block 21 for connecting a busbar and a plurality of spaced elastic clamping pieces 22. The plurality of elastic clamping pieces 22 are arranged in a circle to form a plug-in cavity. One end of the plug-in cavity has a circular clamping hole 28 formed by the plurality of elastic clamping pieces 22. The diameter of the clamping hole 28 is smaller than the diameter of the plug-in cavity. The moving plug-in 1 of the present invention is inserted into the plug-in cavity of the stationary plug-in 2 through the clamping hole 28 for insertion and mating. During insertion, the clamping hole 28 is opened, and after insertion, the clamping hole 28 clamps the plug-in part 14 of the moving plug-in 1. Since the clamping hole 28 is circular and the diameter of the plug-in cavity is larger than the diameter of the clamping hole 28, the moving plug-in 1 can be inserted from any angle of 360°. Even if there is a certain error in the installation of the moving plug-in 1 and the stationary plug-in 2, whether the error is in the horizontal or vertical direction, it can be adjusted for alignment, and sufficient contact area between the two can still be guaranteed, reducing the requirements for assembly process and processing accuracy. As mentioned above, the connector used as the static plug-in 2 in this embodiment can obviously also be used as the dynamic plug-in 1.

[0068] Preferably, the clamping insertion hole 28 is further provided with a circular guide insertion hole 27 formed by a plurality of elastic clamping pieces 22 at the entrance end of the insertion cavity. The diameter of the guide insertion hole 27 is larger than the diameter of the clamping insertion hole 28, which facilitates the insertion of the moving insert 1 into the clamping insertion hole 28, so that the moving insert 1 and the stationary insert 2 have a larger adjustment space from 360°, reducing the requirements for processing accuracy.

[0069] Preferred, such as Figure 8-10 The static insert 2 of this embodiment further includes a spring coil 23. The outer side of the elastic clamping piece 22 forms an arc-shaped concave first recess 221 at a position corresponding to the clamping hole 28. The first recesses 221 of multiple elastic clamping pieces 22 are interconnected, and the spring coil 23 is fitted within the first recesses 221 of the multiple elastic clamping pieces. The outer side of the end of the elastic clamping piece 22 connected to the terminal block 21 forms an arc-shaped concave second recess 223. The end of the terminal block 21 connected to the elastic clamping piece 22 is cylindrical and has an arc-shaped concave third groove 212. The elastic clamping piece 22 is located on the outer side of the terminal block 21. The second recess 223 cooperates with the third groove 212, correspondingly placed within the third groove 212. The second spring coil 29 is fitted within the second recesses 223 of the multiple elastic clamping pieces to fix the elastic clamping piece 22 to the terminal block 21. The clamping force and reliability of the elastic clamping piece 22 are increased by the spring coil 23, and the tight contact between the moving plug 1 and the stationary plug 2 is achieved. The second spring coil 29 is used to achieve a reliable connection between the elastic clamping piece 22 and the terminal block 21.

[0070] The number of elastic clamping pieces 22 in the static insert 2 can be two, three, or more. In this embodiment, three pieces are preferred, forming a plum blossom-shaped static insert 2. The three elastic clamping pieces 22 are evenly arranged circumferentially. Specifically, as shown... Figure 8-9 As shown, each elastic clamping piece 22 is integrally formed. The elastic clamping piece 22 is arc-shaped in the radial direction of the insertion cavity. In the axial direction of the insertion cavity, the elastic clamping piece 22 sequentially forms an arc-shaped concave first concave portion 221, an arc-shaped convex third arc-shaped convex wall 222, and an arc-shaped concave second concave portion 223 on the outer side. Correspondingly, the elastic clamping piece 22 sequentially forms an arc-shaped convex first arc-shaped convex wall, an arc-shaped concave third concave portion, and an arc-shaped convex second arc-shaped convex wall on the inner side of the insertion cavity in the axial direction. The third concave portions of multiple elastic clamping pieces 22 surround the insertion cavity, making the insertion cavity nearly spherical. The first arc-shaped convex walls of multiple elastic clamping pieces 22 form the clamping insertion hole 28. The multiple elastic clamping pieces 22 are spaced apart to form a heat dissipation channel. The three elastic clamping pieces 22 form a plum blossom-shaped static insert 2. These three pieces provide good heat dissipation and form an arc shape, maintaining line contact with the pins and minimizing frictional resistance. Alternatively, as a less desirable embodiment, the first arc-shaped outer protrusion can be omitted, and the elastic clamping pieces 22 can be replaced with non-arc-shaped copper sheets, forming a conical static insert.

[0071] In addition, the plum blossom-shaped static plug 2 has a smaller external size than the existing static plugs, which helps to reduce space occupation. Therefore, there is enough space in the bus box 3 to arrange the required number of static plugs 2. This can solve the problem that the existing 125A circuit drawer cabinet circuit distribution and conversion device cannot achieve three-phase four-wire wiring under the existing specifications and dimensions. In particular, in terms of the height of the static plug 2, it can solve the problem of the large thickness space of the existing metal shell drawer cabinet circuit distribution and conversion device.

[0072] Preferred, such as Figure 8 , 10 As shown, one end of the terminal block 21 is a cylindrical connector 211, which has a third concave groove 212 formed by an arc. The other end of the terminal block 21 has two sets of supporting legs 213 arranged side by side, forming a wiring groove for connecting the busbar between the two sets of supporting legs 213. Each supporting leg 213 has a pin hole, and a first pin 26 for connecting to the busbar is provided in the pin hole. When installing the busbar, the busbar is first placed between the two sets of supporting legs 213, and then the first pin 26 is inserted through the supporting leg 213 and the busbar to achieve the connection between the busbar connection part and the busbar.

[0073] like Figure 2 , Figure 11-15As shown, another improvement of the present invention is to provide a preferred embodiment of a valve device. The valve device 4 includes a valve barrel 41 with the channel provided. The blocking mechanism includes a valve elastic element 43 and a valve baffle 42. The valve baffle 42 is slidably disposed at one end of the valve barrel 41. The valve elastic element 43 is used to drive the valve baffle 42 to close the channel. The valve baffle 42 is provided with a driving inclined surface 4221 for cooperating with the moving insert 1. The moving insert 1 drives the valve baffle 42 to slide open the channel by overcoming the elastic force of the valve elastic element 43 through the driving inclined surface 4221.

[0074] The valve barrel 41 in this embodiment has a cylindrical hollow structure, which forms the channel. Alternatively, the hollow structure and the clamping insertion hole 28 at one end of the stationary insert 2 housed within the hollow structure together form the channel. One end of the valve barrel 41 is snapped into the busbar box 3, and the other end engages with the valve baffle 42. The valve barrel 41 is fitted onto the outside of one end of the stationary insert 2. The valve baffle 42 and the valve elastic element 43 are located at one end of the valve barrel 41. The valve baffle 42 slides linearly along the radial direction of the valve barrel 41. The valve elastic element 43 is a compression spring, with one end connected to the valve baffle 42 and the other end connected to the valve barrel 41, driving the valve baffle 42 to close the channel. The structure is simple and has a high level of protection.

[0075] like Figure 11-13 Preferably, the valve device 4 includes two sets of valve baffles 42 symmetrically arranged. The valve baffles 42 are respectively connected to two valve elastic elements 43. The two valve elastic elements 43 respectively drive the two sets of valve baffles 42 to move towards each other in the radial direction of the valve barrel 41 to block the channel. When the moving plug 1 is inserted into the valve barrel 41, it drives the two sets of valve baffles 42 to move away from each other through the inclined surface 4221 of the two sets of valve baffles 42 to open the channel. Figure 12 This describes the state when the passage is opened by the two sets of valve baffles 42. Figure 13 The diagram shows the state when the two sets of valve baffles 42 are closed. The two sets of valve baffles 42 slide left and right respectively; however, they can also be set to slide up and down as needed. This embodiment reduces the distance each set of valve baffles 42 moves by using two sets, thus reducing the size of the valve device 4. Of course, one, three, or more valve baffles 42 can also be used as needed. When multiple valve baffles 42 are used, each valve baffle 42 can be fan-shaped, and multiple valve baffles 42 can be arranged into a circle. Multiple tension springs hold the multiple valve baffles 42 in place, and the moving insert 1 drives the multiple valve baffles 42 to slide in different directions via the driving inclined surface 4221.

[0076] like Figure 11-14Preferably, the valve baffle 42 includes a movable part, a reset connecting part, and a guide part. The movable part is used to open the channel when the movable insert 1 is inserted into the valve barrel 41 and to close the channel when the movable insert 1 is withdrawn from the valve barrel 41. The reset connecting part is used to cooperate with the valve elastic element 43. The guide part is used to cooperate with the valve barrel 41 for movement guidance.

[0077] Preferably, the movable part is located on the top side of the valve baffle 42 that cooperates with the movable insert 1, including a limiting plate 421 and a driving inclined plate 422 with a driving inclined surface 4221. The limiting plate 421 is horizontally arranged and has a U-shaped structure. The driving inclined plate 422 is inclined towards the central axis of the valve barrel 41 and away from the movable insert 1 to form the driving inclined surface 4221. The driving inclined plate 422 slides and cooperates with the movable insert 1, playing a driving and guiding role to facilitate the insertion of the movable insert 1. The limiting plate 421 is used to support the driving inclined plate 422. Limiting protrusions are formed on the remaining sides of the driving inclined plate 422 except for the side near the central axis of the valve barrel 41.

[0078] Preferably, the reset connection includes a first half-groove 423 located on the bottom side of the valve baffle 42 opposite to the valve barrel 41, and a second half-groove 413 correspondingly located at one end of the valve barrel 41. The first half-groove 423 and the second half-groove 413 form an elastic mounting space for accommodating the valve elastic member 43. Further, the valve baffle 42 has a first connecting plate 424 at one end of the elastic mounting space, and a first mounting post 425 on the first connecting plate 424. The valve barrel 41 has a second connecting plate 414 at the other end of the elastic mounting space. The valve elastic member 43 is a compression spring, installed within the elastic mounting space. One end of the valve elastic member 43 is fitted onto the first mounting post 425, and both ends abut against the first connecting plate 424 and the second connecting plate 414, respectively.

[0079] Preferably, the guide portion includes a first slider 428 and a second barb 427 disposed on the bottom side of the valve baffle 42 opposite to the valve barrel 41. One end of the valve barrel 41 is provided with a first groove 415 and a second groove 416 respectively cooperating with the first slider 428 and the second barb 427 along the moving direction of the valve baffle 42. The first slider 428 is strip-shaped and extends into the first groove 415 for guidance. The first groove 415 is disposed on the outside of the second groove 416. One end of the second groove 416 is connected to the channel in the middle of the valve barrel 41 to install the second barb 427. The second barb 427 includes a guide bar and a barb located at the end of the guide bar. The guide bar slides in cooperation with the second groove 416 and is limited by the barb to prevent the valve baffle 42 from falling off the valve barrel 41. Specifically, the guide portion is provided in two sets, located on both sides of the movable portion. Horizontally arranged support plates 426 are provided on both sides of the limiting plate 421 of the movable portion. A first slider 428 and a second barb 427 are provided on the bottom side of each support plate 426 on both sides.

[0080] When the moving plug 1 and the stationary plug 2 are connected, the moving plug 1 pushes open the two valve baffles 42 along the drive inclined surface 4221. During the movement of the valve baffles 42, the second barb 427 and the first slider 428 guide the movement trajectory of the valve baffles 42. The second barb 427 also acts as a limit to prevent the valve baffles 42 from falling. At the same time, the first connecting plate 424 squeezes the valve elastic element 43. The valve elastic element 43 is in a compressed state. The moving plug 1 extends into and passes through the valve barrel 41 and connects with the stationary plug 2. At this time, the valve baffles 42 are close to both sides of the moving plug 1 to provide protection. After the moving plug 1 and the stationary plug 2 are separated, the valve elastic element 43 pushes the valve baffles 42 to reset and close the passage of the valve barrel 41.

[0081] Figure 2 , Figure 16-21 As shown, the busbar box 3 includes a housing and busbars disposed within the housing. Preferably, the housing includes a first limiting plate 31 and a second limiting plate 32, and the busbars include an inlet busbar 33 and an outlet busbar 34. The first limiting plate 31 and the second limiting plate 32 are interlocked and form a cavity inside. In this embodiment, there are four sets of inlet busbars 33 arranged from top to bottom in the lower half of the cavity, and four sets of outlet busbars 34 arranged from top to bottom in the upper half of the cavity. The inlet busbars 33 and outlet busbars 34 are arranged in parallel and spaced apart. The two ends of the inlet busbar 33 are respectively connected to the stationary plug 2, and the inlet busbar 33 is also connected to the main inlet plug 323. One end of the outlet busbar 34 is connected to the stationary plug 2, and the other end is connected to a cable splice 342. The bottom of the terminal block 21 on the stationary plug 2 is connected to the end of the busbar through a first pin 26. Figure 8 ).

[0082] Preferably, the outer side of the first limiting plate 31 of the outer shell is provided with a cylindrical valve mounting seat 38 for connecting with the valve barrel 41. One end of the static insert 2 passes through the valve mounting seat 38. The valve barrel 41 is engaged with the valve mounting seat 38. A circular first limiting groove 383 is provided on the end side of the valve mounting seat 38. A circular inner limiting ring 382 is formed inside the first limiting groove 383. An outer limiting ring 384 is formed outside the first limiting groove 383. A third slot 381 is provided on the inner side wall of the outer limiting ring 384 that communicates with the first limiting groove 383.

[0083] Preferably, the outer side of the end of the valve barrel 41 connected to the valve mounting base 38 is provided with a third locking block 412 that engages with the third locking groove 381, and the inner side is provided with an annular limiting groove 411 that cooperates with the inner limiting ring 382. During installation, one end of the valve barrel 41 is installed in the first limiting groove 383, the inner limiting ring 382 on the valve mounting base 38 is embedded in the annular limiting groove 411, and the third locking block 412 is snapped into the third locking groove 381. Through the setting of the first limiting groove 383 and the annular limiting groove 411, a reliable closed connection is achieved, improving the protection capability, and ensuring a reliable electrical safety distance while improving stability.

[0084] Preferably, the first limiting plate 31 and the second limiting plate 32 are fixed by a locking block and a locking slot. Four sets of incoming busbars 33 are arranged from top to bottom corresponding to phases A, B, C, and N, respectively. Four sets of outgoing busbars 34 are also arranged from top to bottom corresponding to phases A, B, C, and N, respectively. The eight busbars are arranged parallel to each other. Correspondingly, the second limiting plate 32 has four sets of main incoming cable holders 322. Each main incoming cable holder 322 contains a main incoming cable plug 323 connected to one set of incoming busbars 33. The main incoming busbar in each main incoming cable plug 323 is connected to one set of incoming busbars 33. Correspondingly, the second limiting plate 12 has four sets of main outgoing cable holders 39. Cable splice strips 342 are installed in the main outgoing cable holders 39, and each cable splice strip 342 is connected to one set of outgoing busbars 34.

[0085] Preferably, the inner side of the second limiting plate 32 is provided with a busbar slot 329 for mounting the busbar and a connecting support 327 for installing the static plug 2. The second limiting plate 32 is provided with a second separating protrusion 321 between adjacent busbars. The first limiting plate 31 is provided with a first separating protrusion 312 corresponding to the second separating protrusion 321. The first limiting plate 31 is provided with a door mounting seat 38 at the position corresponding to the connecting support 327. In this embodiment, the busbar slot 329 consists of multiple protrusions provided on adjacent second separating protrusions 321. The busbar slot ribs are formed, and the incoming busbar 33 and the outgoing busbar 34 are respectively installed in the corresponding busbar slots 329. The static plug 2 is installed on the connecting support 327. When the first limiting plate 31 and the second limiting plate 32 are engaged, the first separating protrusion 312 and the second separating protrusion 321 respectively isolate the adjacent busbars to ensure electrical insulation between the busbars. The static plug 2 has a clamping insertion hole 28 at one end that passes through the valve mounting base 38. The valve barrel 41 is engaged with the valve mounting base 38 and covers the static plug 2.

[0086] Preferably, the incoming busbar 33 is provided with an insulating sleeve 324 at the position corresponding to the main incoming plug 323 connected to the adjacent busbar, and / or the outgoing busbar 34 is provided with an insulating sleeve 324 at the position corresponding to the cable splice 342 connected to the adjacent busbar. For example, insulating sleeves 324 are provided on the incoming busbar 33 at the positions corresponding to the A-phase incoming busbar 33 and the B-phase incoming busbar 33, the C-phase incoming busbar 33, and the N-phase incoming busbar 33, to ensure electrical safety between them. Preferably, the N-phase outgoing busbar 34 is provided with an insulating sleeve 324 on the outgoing busbar 34 corresponding to the C-phase cable splice 342, to ensure electrical safety between them.

[0087] The insulating sleeve 324 of this embodiment has a U-shaped cross-section, forming an elongated receiving groove 328 for fitting the busbar. Both sides of the receiving groove 328 are provided with elongated first arc-blocking grooves 325. The first limiting plate 31 is provided with a first arc-blocking protrusion 326 that is inserted into the first arc-blocking groove 325. After the first limiting plate 31 and the second limiting plate 32 are engaged, the first arc-blocking protrusion 326 is embedded in the first arc-blocking groove 325 to ensure sufficient electrical safety at the points where the A-phase incoming busbar 33 corresponds to the B-phase main incoming busbar 35, the B-phase incoming busbar 33 corresponds to the C-phase main incoming busbar, the C-phase incoming busbar 33 corresponds to the N-phase main incoming busbar 35, and the N-phase outgoing busbar 34 corresponds to the C-phase cable splice 342.

[0088] Preferably, the first limiting plate 31 has insulating protrusions 311 on both sides of the busbar near the stationary plug-in 2 and the valve mounting seat 38 to ensure sufficient electrical insulation between the stationary plug-in 2 and the adjacent busbar.

[0089] Preferably, the outer casing of the busbar box 3 is further provided with a sealing plate 37 connected to the valve mounting seat 38. The sealing plate 37 is provided on the valve mounting seat 38 corresponding to the N phases of the first limiting plate 31. When the circuit distribution and conversion device is a three-phase scheme, the sealing plate 37 blocks the N-phase valve mounting seat 38. When it is a four-phase scheme, the sealing plate 37 can be removed, so that wiring can be performed for both three-phase and four-phase schemes. The sealing plate 37 can be an integral sealing plate that is easy to knock off, or it can be a snap-fit ​​sealing plate that is snapped into the valve mounting seat 38.

[0090] Preferably, the busbar box 3 is provided with heat dissipation holes 36 that communicate with the outside world in order to reduce the temperature rise of the busbar.

[0091] In this embodiment, the busbar box 3 is provided with a busbar slot 329 for mounting busbars, and a first separating tab 312 and a second separating tab 321 for isolating multiple busbars. At the same time, an insulating sleeve 324 and an insulating protrusion 311 are provided at key positions to ensure the electrical insulation of the busbars inside the busbar box 3 and improve safety.

[0092] Example 2: A drawer cabinet circuit distribution and switching device, whose structure is basically the same as that of Example 1, except that the structure of the plug-in component 1 is different. For example... Figure 22-24 As shown, another embodiment of the movable plug 1 includes a mounting base and pins mounted on the mounting base. Each pin includes a wiring portion 13 and a plug portion 14. An arc-blocking sleeve 125 is provided on the mounting base, and the arc-blocking sleeve 125 is arranged in a ring around the outside of the plug portion 14, with the length of the arc-blocking sleeve 125 being greater than or equal to the length of the plug portion 14. The plug portion 14 and arc-blocking sleeve 125 of the movable plug 1 in this embodiment are similar to those in the movable plug 1 of Embodiment 1, the difference being in the mounting base and the wiring portion 13.

[0093] like Figure 22-24 As shown, in this embodiment, the mounting base is an integral first fixing base 15. The insertion part 14 of the pin is a cylindrical copper pin, the wiring part 13 is a square copper rod, the wiring part 13 is connected to the cable by bolt fixing, and the wiring part 13 is fixed to the first fixing base 15 by a pin.

[0094] Specifically, the first fixing base 15 is plate-shaped, and has multiple second through holes 121 for the insertion part 14 to pass through. An arc-blocking sleeve 125 is provided around one side of the first fixing base 15 around the second through holes 121, and a first support base 151 is provided on the other side of the first fixing base 15 corresponding to the second through holes 121. The insertion part 14 of the pin passes through the second through holes 121 and extends into the arc-blocking sleeve 125. The first support base 151 and the wiring part 13 are fixed together by a second pin 152. Preferably, on the side of the first fixing base 15 where the wiring part 13 is located, a first arc-blocking plate 153 is also provided, spaced between the multiple wiring parts 13. The height of the first arc-blocking plate 153 is greater than or equal to the height of the wiring part 13. Preferably, the first support base 151 is square, and the height of the square copper rod is greater than the height of the first support base 151 for wiring.

[0095] Example 3: A drawer cabinet circuit distribution and switching device, whose structure is basically the same as that of Example 1, except that the structure of the plug-in component 1 is different. For example... Figure 25-27 As shown, another embodiment of the movable plug 1 includes a mounting base and pins mounted on the mounting base. Each pin includes a wiring portion 13 and a plug portion 14. An arc-blocking sleeve 125 is provided on the mounting base, and the arc-blocking sleeve 125 is arranged in a ring around the outside of the plug portion 14, with the length of the arc-blocking sleeve 125 being greater than or equal to the length of the plug portion 14. The plug portion 14 and arc-blocking sleeve 125 of the movable plug 1 in this embodiment are similar to those in the movable plug 1 of Embodiment 1, the difference being in the mounting base and the wiring portion 13.

[0096] like Figure 25-27 As shown, in this embodiment, the mounting base is an integral second fixing base 16. The insertion part 14 of the pin is a cylindrical copper pin, the wiring part 13 is a square copper sheet, the wiring part 13 is connected to the cable by bolt fixing, and the wiring part 13 is fixed to the first fixing base 15 by a pin.

[0097] Specifically, the second fixing base 16 is plate-shaped, and has multiple second through holes 121 for the insertion part 14 to pass through. An arc-blocking sleeve 125 is provided around one side of the second fixing base 16 around the second through holes 121, and a second support base 161 is provided on the other side of the second fixing base 16 corresponding to the second through holes 121. The insertion part 14 of the pin passes through the second through holes 121 and extends into the arc-blocking sleeve 125. The second support base 161 and the wiring part 13 are fixed together by a third pin 162. Preferably, on the side of the second fixing base 16 where the wiring part 13 is located, a second arc-blocking plate 163 is also provided, spaced between multiple wiring parts 13. The height of the second arc-blocking plate 163 is greater than or equal to the height of the wiring part 13. In this embodiment, the second arc-blocking plate 163 has a corresponding bend to avoid the sheet-like wiring part 13. Preferably, the second fixing base 16 is rectangular, and the height of the square copper sheet is greater than the height of the second fixing base 16 to facilitate wiring.

[0098] Example 4: A drawer cabinet circuit distribution and switching device, whose structure is basically the same as that of Example 1, except that the plug-in structure of the static plug-in 2 is different. Figure 28 As shown, the static plug-in 2 includes multiple elastic clamping pieces 22 arranged in a circle, forming an insertion cavity with an approximate frustum structure. The end of the frustum structure with a smaller diameter forms a clamping insertion hole 28, and no guide insertion hole 27 is provided. The static plug-in 2 also includes a first cylinder 225 connected to the elastic clamping pieces 22, and the first cylinder 225 is a copper tube connected to the busbar.

[0099] Example 5: A drawer cabinet circuit distribution and switching device, whose structure is basically the same as that of Example 1, except that the plug-in structure of the static plug-in 2 is different. Figure 29 As shown, the static plugin 2 in this example and Figure 28 Similar to the embodiments, in Figure 28 Based on the previous embodiment, the multiple elastic clamping pieces 22 also form guide insertion holes 27. The static insert 2 includes multiple elastic clamping pieces 22 arranged in a circular pattern, the multiple elastic clamping pieces 22 forming an insertion cavity, one end of the insertion cavity forming a clamping insertion hole 28, the outer side of the elastic clamping piece 22 forming an arc-shaped concave first concave portion 221 at the position corresponding to the clamping insertion hole 28, and a guide insertion hole 27 is formed at the entrance end of the insertion cavity, the diameter of the guide insertion hole 27 being larger than the diameter of the clamping insertion hole 28.

[0100] Example 6: A drawer cabinet circuit distribution and switching device, whose structure is basically the same as that of Example 1, except that the plug-in structure of the static plug-in 2 is different. Figure 30 As shown, the static plugin 2 in this example and Figure 29 Similar to the embodiments, in Figure 29 Based on the previous embodiment, a spring coil 23 was further added, which is fitted inside the first recess 221 of the plurality of elastic clamping pieces 22.

[0101] Example 7: A drawer cabinet circuit distribution and switching device, whose structure is basically the same as that of Example 1, except that the structure of the blocking mechanism of the door device 4 is different. Figure 2 , Figures 31-36As shown, the valve device 4 includes a barrel 44 with the channel and a blocking mechanism capable of closing and opening the channel. Similar to that in Embodiment 1, the barrel 44 is cylindrical and has a channel extending axially through it. In this embodiment, the barrel 44 has a cylindrical hollow structure, forming the channel; alternatively, the hollow structure and a clamping insertion hole 28 at one end of the static insert 2 housed within the hollow structure together form the channel. The blocking mechanism includes an elastic baffle 45 at one end of the barrel 44, and the other end of the barrel 44 can be engaged with the valve mounting seat 38 of the busbar box 3. The elastic baffle 45 includes multiple elastic movable pieces 452. One end of each elastic movable piece 452 is connected to the barrel 44, and the free end of the other end extends toward the axis of the barrel 44 to block the channel. When the movable plug 1 is inserted, it pushes open the free end of the elastic movable piece 452, causing the free end of the elastic movable piece 452 to deform and bend to open the channel. The movable plug 1 and the stationary plug 2 are inserted and engaged. When the movable plug 1 is pulled out, the elastic movable piece 452 automatically resets and closes the channel.

[0102] Preferably, the elastic baffle 45 is integrally formed, and multiple tangents 451 are formed on the elastic baffle 45, thus forming multiple elastic movable pieces 452. Preferably, in this embodiment, the elastic baffle 45 is a circular baffle, and the circular elastic baffle 45 has tangents 451 passing through the center of the elastic baffle 45 and forming a cross-shaped structure. The tangents 451 divide the elastic baffle 45 into four fan-shaped elastic movable pieces 452. This embodiment has four elastic movable pieces 452, but more elastic movable pieces 452 can be used as needed. Of course, the elastic baffle 45 may not be integrally formed, and may not be circular.

[0103] Preferably, the blocking mechanism further includes a rubber ring 46, and a protrusion 453 is provided on one side of the free end of the elastic movable piece 452. The protrusions 453 of multiple elastic movable pieces 452 are assembled to form a raised post. The rubber ring 46 is fitted on the raised post to drive the free end of the elastic movable piece 452 to reset and close the channel. By setting the rubber ring 46, the reliability and sealing of the elastic baffle 45 are improved, and the service life of the blocking mechanism is increased.

[0104] Preferably, each elastic movable piece 452 has an arc-shaped limiting groove 454 on its protrusion 453. The protrusions 453 of multiple elastic movable pieces 452 are joined together at the center of the elastic baffle 45 to form a raised pillar, and the limiting grooves 454 of multiple elastic movable pieces 452 are interconnected to form a ring structure on the raised pillar. The rubber ring 46 is fitted onto the ring structure to achieve a stable fit. The moving plug 1 overcomes the elastic force of the rubber ring 46 to push open the free end of the elastic movable piece 452 and engage with the stationary plug 2. When the moving plug 1 is pulled out, the rubber ring 46 contracts, causing the free end of the elastic movable piece 452 to reset and close the channel of the valve device 4.

[0105] Preferably, in this embodiment, the protrusion 453 of the elastic movable piece 452 is located inside its channel facing the barrel 44, i.e., on the side away from the moving insert 1. Preferably, the outer side of the plurality of elastic movable pieces 452, i.e., the side facing the moving insert 1, is provided with an inclined surface to facilitate the insertion of the moving insert 1, and an indentation is formed at the center of the elastic baffle 45. Of course, as another embodiment, the protrusion 453 can also be provided on the outer side of the elastic movable piece 452, and the center of the protrusion formed by the plurality of protrusions 453 is indented to form an inclined surface to facilitate the insertion of the moving insert 1.

[0106] Preferably, the barrel 44 includes a first cylinder 442 and a first ring 441 disposed at one end of the first cylinder 442. The first ring 441 is coaxially disposed with the first cylinder 442, and the inner diameter of the first ring 441 is smaller than the inner diameter of the first cylinder 442. The elastic baffle 45 is installed inside the first cylinder 442 and is fitted with the first ring 441 for limiting. Preferably, the barrel 44 is engaged with the busbar box 3 to limit the elastic baffle 45 between the first ring 441 and the busbar box 3.

[0107] Specifically, the inner sides of the first ring 441 are provided with first locking blocks 443, the elastic baffle 45 is circular, and its circumferential side is a second ring 455. The second ring 455 is provided with a first locking groove 456 that engages with the first locking blocks 443, so that the elastic baffle 45 and the cannon barrel 44 can be quickly installed.

[0108] Preferred, such as Figures 35-36 As shown, the valve device 4 is installed on the busbar box 3, corresponding to the stationary plug-in 2, and one end with a blocking mechanism faces the moving plug-in 1, used to close the stationary plug-in 2 when the moving plug-in 1 is pulled out. The busbar box 3 is provided with a valve mounting seat 38 corresponding to the stationary plug-in 2. The valve mounting seat 38 is hollow inside. The end of the stationary plug-in 2 near the moving plug-in 1 is inserted into the valve mounting seat 38. The barrel 44 is sleeved on the outside of the valve mounting seat 38. The elastic baffle 45 of the valve device 4 is limited between the barrel 44 and the valve mounting seat 38. The valve mounting base 38 has third slots 381 on both sides of its end near the moving insert 1. The end of the first locking block 443 extends out of the first slot 456 and engages with the third slot 381. The end of the valve mounting base 38 has a second annular limiting groove 385. The second ring 455 has an annular limiting ring 457 that engages with the second annular limiting groove 385. The elastic baffle 45 is limited between the first ring 441 and the bus box 3, and the annular limiting ring 457 is embedded in the second annular limiting groove 385. The second annular limiting groove 385 and the annular limiting ring 457 improve reliability and sealing. Furthermore, the barrel 44 has openings on both sides. During installation, the barrel 44 is fitted onto the outside of the valve mounting base 38. The openings facilitate the insertion of the barrel 44.

[0109] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A drawer cabinet circuit distribution and switching device, comprising a moving plug (1), a stationary plug (2), and a busbar box (3), wherein the busbar box (3) comprises a housing and a busbar disposed within the housing, the stationary plug (2) is disposed within the housing and connected to the busbar, and the moving plug (1) is mounted on the drawer and correspondingly disposed to the stationary plug (2), characterized in that: It also includes a valve device (4) located between the moving plug (1) and the stationary plug (2). The valve device (4) is installed on the bus box (3) and is correspondingly arranged with the stationary plug (2). The valve device (4) includes a barrel (44) and a blocking mechanism. The barrel (44) is cylindrical and has a channel that passes through the barrel (44) axially. The blocking mechanism includes an elastic baffle (45) located at one end of the barrel (44). The elastic baffle (45) includes a plurality of elastic movable pieces (452). Multiple elastic movable pieces (452) are connected at one end to the barrel (44), and the free end of the other end extends toward the axis of the barrel (44) to block the channel together; the blocking mechanism also includes a rubber ring (46), and a protrusion (453) is provided on one side of the free end of the elastic movable piece (452). The protrusions (453) of multiple elastic movable pieces (452) are assembled into a protruding column, and the rubber ring (46) is fitted on the protruding column to drive the free end of the elastic movable piece (452) to reset and close the channel.

2. The drawer cabinet circuit distribution and switching device according to claim 1, characterized in that: The elastic baffle (45) is integrally formed, and multiple tangents (451) are opened on the elastic baffle (45) to divide the elastic baffle (45) into multiple elastic movable pieces (452).

3. The drawer cabinet circuit distribution and switching device according to claim 2, characterized in that: The elastic baffle (45) is a circular baffle. A tangent (451) is opened on the elastic baffle (45) through the center of the elastic baffle (45) and forming a cross-shaped structure. The tangent (451) divides the elastic baffle (45) into four fan-shaped elastic movable pieces (452).

4. The drawer cabinet circuit distribution and switching device according to claim 1, characterized in that: Each elastic movable piece (452) has an arc-shaped limiting groove (454) on its protrusion (453). The limiting grooves (454) of multiple elastic movable pieces (452) are interconnected to form a ring structure on the protruding column. The rubber ring (46) is fitted on the ring structure.

5. The drawer cabinet circuit distribution and switching device according to claim 1, characterized in that: The protrusion (453) of the elastic movable piece (452) is located inside its channel toward the barrel (44), and the outer side of the multiple elastic movable pieces (452) is provided with a slope, forming a concave (458) at the center of the elastic baffle (45).

6. The drawer cabinet circuit distribution and switching device according to claim 1, characterized in that: The bus box (3) is provided with a valve mounting seat (38) corresponding to the static plug (2). The end of the static plug (2) near the moving plug (1) is inserted into the valve mounting seat (38). The barrel (44) of the valve device (4) is sleeved on the outside of the valve mounting seat (38). The elastic baffle (45) of the valve device (4) is limited between the barrel (44) and the valve mounting seat (38).

7. The drawer cabinet circuit distribution and switching device according to claim 6, characterized in that: The barrel (44) includes a first cylinder (442) and a first ring (441) disposed at one end of the first cylinder (442). The first ring (441) is coaxially disposed with the first cylinder (442). The inner diameter of the first ring (441) is smaller than the inner diameter of the first cylinder (442). The elastic baffle (45) is installed inside the first cylinder (442) and is in a limiting fit with the first ring (441). The first ring (441) has a first locking block (443) on its inner side. The elastic baffle (45) is circular, and its circumferential side is a second ring (455). The second ring (455) has a first locking groove (456) that engages with the first locking block (443). The valve mounting base (38) has a third locking groove (381). The end of the first locking block (443) extends out of the first locking groove (456) and engages with the third locking groove (381). The end of the valve mounting base (38) has a second annular limiting groove (385). The second ring (455) has an annular limiting ring (457) that engages with the second annular limiting groove (385). The elastic baffle (45) is limited between the first ring (441) and the bus box (3), and the annular limiting ring (457) is embedded in the second annular limiting groove (385).

8. The drawer cabinet circuit distribution and switching device according to claim 1, characterized in that: The busbars in the busbar box (3) include an incoming busbar (33) and an outgoing busbar (34). The incoming busbar (33) and the outgoing busbar (34) are arranged in parallel and spaced apart. The two ends of the incoming busbar (33) are respectively connected to the static plug (2), and the incoming busbar (33) is also connected to the main incoming plug (323). One end of the outgoing busbar (34) is connected to the static plug (2), and the other end is connected to the cable splice bar (342). The outer shell of the busbar box (3) includes a first limiting plate (31) and a second limiting plate (32) that are interlocked with each other. The inner side of the second limiting plate (32) is provided with a busbar slot (329) for mounting the busbar and a connecting support seat (327) for installing the static plug (2). The second limiting plate (32) is provided with a second separating protrusion (321) between adjacent busbars. The first limiting plate (31) is provided with a first separating protrusion (312) corresponding to the second separating protrusion (321). The first limiting plate (31) is provided with a door mounting seat (38) at the position corresponding to the connecting support seat (327). The first separating protrusion (312) and the second separating protrusion (321) are respectively isolated from adjacent busbars. The incoming busbar (33) is provided with an insulating sleeve (324) at the position of the main incoming plug (323) connected to the adjacent busbar, and / or the outgoing busbar (34) is provided with an insulating sleeve (324) at the position of the cable splice (342) connected to the adjacent busbar.

9. The drawer cabinet circuit distribution and switching device according to claim 6, characterized in that: The outer shell of the bus box (3) is provided with a sealing plate (37) on the valve mounting base (38) corresponding to the N phase, and / or the bus box (3) is provided with a heat dissipation hole (36) communicating with the outside.

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