CN204230654U - A kind of bus structure of direct current PDU electric power source distribution device - Google Patents

Abstract

The utility model discloses a kind of bus structure of direct current PDU electric power source distribution device, it is characterized in that: this bus structure cross section is " mountain " font, comprises support wall, bus holding groove bus holding wall; Middle wall is bus holding wall, and the wall of both sides is support wall; Bus holding wall inside is provided with the bus holding groove of upper opening, and bus holding groove two interior facades are respectively arranged with the clamp groove of multiple clamping bus.This bus structure by the structure such as main body mechanism, bus holding groove and guide rail card access slot that arranges and shell and panel module reliably, dismountable and combine easily, and provide reliably with socket module for functional module, dismountable be fixedly connected with easily.

Description

Bus support of direct current PDU power distributor

Technical Field

The utility model belongs to rack supply socket field especially relates to a direct current PDU power distributor's bus bar support.

Background

The PDU refers to a Power Distribution Unit, is an acronym of English Power Distribution Unit, and is mainly applied to places such as cabinets and the like which have high requirements on Power supply reliability. Different output interfaces such as power socket modules, wiring terminals or wires with plugs and the like with various system standards in the world, such as national standard, European standard, English standard, American standard and the like, can be selected to be combined at will to meet different requirements of multi-country customers; double-power input can be realized; different input incoming line positions such as product end input, product front panel input, product rear input and the like can be adopted; the intelligent socket comprises a selectable wiring terminal, a 16A national standard plug, various industrial couplers and other various input interfaces. The SPD module can provide multiple circuit protection functions: lightning stroke and surge protection: maximum impact current resistance: 5KA or higher; limiting voltage: the voltage is less than or equal to 1.3kV or lower, the device has short-circuit protection and protection failure indication functions, and can be used for fine surge protection of an equipment end through professional detection of a national authority test center; the current and voltage monitoring module with LED display can be provided, and real-time monitoring of current and voltage is realized; anti-misoperation: the PDU master control switch is provided with a misoperation prevention protective cover, so that accidental power failure caused by misoperation can be prevented.

However, the load current of the PDU in the prior art is small; the output port is single, and the socket and the lead with the plug cannot be compatible; the internal wires are generally connected through tin soldering or self-tapping screws, and the risk of fire is caused by overhigh temperature rise due to the sandwich effect, the electrical stress and the thermal stress effect; potential safety hazards exist when the internal bus and the connection point conductor are exposed; the single-point fault disconnection can cause output power failure; the bus has many breakpoints and joints and low reliability; a single product can provide fewer output ports; the load current is limited; the overall dimension is large, and precious cabinet effective space is occupied; the full-manual production has low assembly efficiency and difficult guarantee of quality consistency.

Meanwhile, in the prior art, the SPD module in the PDU circuit is fixedly installed in the access circuit in the shell, if the SPD module is damaged in work, the whole PDU circuit is cut off, the SPD module is replaced or the whole PDU circuit is replaced, and the work of a power supply object is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a direct current PDU power distributor's bus bar support is applied to and puts the high reliable PDU of link up generating line both sides distribution in compatible socket output and the cable output to functional module and socket module in combining shell and panel module reliably, detachable and convenient fixed PUD.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a direct current PDU power distributor's bus bar support which characterized in that: the section of the bus support is in a shape of Chinese character 'shan', and the bus support comprises a support vertical wall and a bus clamping groove bus clamping vertical wall; the vertical wall in the middle is a bus clamping vertical wall, and the vertical walls on two sides are support vertical walls; the bus clamping vertical wall is internally provided with a bus clamping groove with an opening at the upper part, and two inner vertical surfaces of the bus clamping groove are respectively provided with a plurality of clamping grooves for clamping buses.

The lower section of the vertical wall of the support is of an inner bending shape, and after the bus support is inserted into the shell, the bending part of the bus support, the left vertical wall, the right vertical wall and the bottom plate of the shell form a reinforcing rib accommodating cavity.

And a guide rail clamping groove matched with the bus support clamping rail of the shell is arranged in the middle of the lower part of the bus support.

Two outer vertical surfaces at the upper end of the bus clamping vertical wall are respectively provided with a buckle.

This bus support is through the main part mechanism, generating line centre gripping groove and the structure such as guide rail joint groove that set up and shell and panel module be in the same place reliably, detachable and convenient combination to provide reliable, detachable and convenient fixed connection for functional module and socket module.

Drawings

FIG. 1 is an exploded view of a PDU;

FIG. 2 is an exploded view of GB-10A-module 9;

FIG. 3 is an assembly view of GB-10A-module 9;

FIG. 4 is a cross-sectional view of the housing 4;

FIG. 5 is a front view of the U-shaped slot A of the spring plate;

FIG. 6 is a C-C cross-sectional view of the clip groove A of the clip U;

FIG. 7 is a front view of the U-shaped slot A of the spring plate;

FIG. 8 is a perspective view of one embodiment of a clip U-shaped slot A;

FIG. 9 is a perspective view of another embodiment of a clip groove A of the clip U;

fig. 10 is a view showing the structure of the snap-fit type lossless connection terminal 14, including (a) a top view of the snap-fit type lossless connection terminal 14, (b) a left view of the snap-fit type lossless connection terminal 14, and (c) a three-dimensional view of the snap-fit type lossless connection terminal 14;

fig. 11 is a working state diagram of the clamping type lossless wiring terminal 14;

FIG. 12 is a branching operation diagram of the clamping type lossless terminal 14;

FIG. 13 is an assembly drawing of an IEC-C13-module, a snap-in lossless terminal 14, a circuit breaker 18, a bus-N19, a bus-L20, a bus-PE 21, a breakout-N22, a breakout-L23, and a breakout-PE 24, including (a) a front view, (b) a top view, (C) a left view, and (d) a three-dimensional view;

FIG. 14 is a view of panel 12 of structure I, including (a) a front side, (b) a back side;

FIG. 15 is a view of Panel 12 in structure II, including (a) a bottom view, (B) a top view, (c) a cross-sectional view A-A, and (d) a cross-sectional view B-B;

fig. 16 is a view of the structure of the inlet mounting end plate 2, including (a) a front view, (b) a top view, (c) a left view, and (d) a three-dimensional view;

fig. 17 is a structural view of the mounting end plate 7, including (b) a front view, (a) a plan view, (c) a left side view, and (d) a three-dimensional view;

fig. 18 is a view of the inlet insulating end plate 3 of structure I, including (a) the back side, (b) the front side;

fig. 19 is a view of the incoming insulation end plate 3 in structure II, including (a) bottom view, (B) top view, (C) sectional view from B-B, (d) sectional view from C-C;

fig. 20 is a structural view of the insulating end plate 6, including (a) a bottom view, (b) a top view, (c) a front view, (d) a left side view, (e) and (f) three-dimensional views;

FIG. 21 is a cross-sectional view of a bus bar support;

FIG. 22 is an assembled cross-sectional view;

FIG. 23 is an exploded view of the SPD module 25

Fig. 24 is an assembled view of the SPD module 25, including (b) a front view, (d) a top view, (a) a right side view, (c) a left side view, and (e) a three-dimensional view;

fig. 25 is a structural view of a base 251 of the SPD module a, including (d) a front view, (e) a top view, (c) a left view, (a) and (b) three-dimensional views;

fig. 26 is a diagram of a base 254 of an SPD module B, including (d) a front view, (e) a top view, (c) a left view, (a) and (B) three-dimensional views;

fig. 27 is a structural view of a lower cover 253 of the SPD module;

FIG. 28 is a temperature recorder screenshot I at temperature rise saturation;

fig. 29 is a temperature recorder screenshot II when the temperature rise is saturated.

Wherein,

end water-proof joint 1

An end plate 2 is installed to inlet wire, end plate part 2a, mounting panel part 2b, circular inlet 2c, II type through-hole 2d, screw mounting hole 2e, mounting groove 2f

The wire inlet insulating end plate 3 comprises a front surface 31, a back surface 32, an end plate mounting through hole 33, an I-shaped mounting end plate fixing column 34A, II-type mounting end plate fixing column 34B, a sliding groove bulge 35, an I-shaped fixing column 36a, an II-shaped fixing column 36B and a grounding terminal clamping groove 37

The shell 4 comprises an end plate mounting beam 41, a bus support clamping rail 42, a panel mounting platform 43, a lower wire arranging device mounting groove 44, an upper wire arranging device mounting groove 45 and a fixing buckle mounting groove 46

GB-10A-module 9, upper cover 91, PE shell fragment 92, N shell fragment 93, L shell fragment 94 and lower cover 95; a protruding bayonet 911, a fixing port 912, a ring wiring hole 913, an L-shaped wire clamping hole 914, a PE wire clamping hole 915, an N-shaped wire clamping hole 916, a top column 951, a buckle 952, a wire clamping hole adjusting block 953,

a receptacle faceplate 12, screw mounting holes 121, breaker securing ribs 122, trapezoidal relief holes 123, module mounting notches 124, bracket snaps 125, hub mounting notches 126, receptacle faceplate mounting notches 127, module bump mating grooves 128, module securing ribs 129,

breaker protection cover 13

Clamping type lossless wiring switching terminal 14

The terminal comprises a terminal shell 141, a terminal copper sheet 142, a copper sheet slot 1411, a shell cover 1412, a distributing through hole 1413, a bus through hole 1414, a copper sheet mounting plate 1415 and a cover locking plate 1416

Bus support 15, support upright wall 151, guide rail clamping groove 152, bus clamping groove 153, bus clamping upright wall 154 and bent part 155

Terminal board 16

bus-N19, bus-L20, bus-PE 21, branch-N22, branch-L23 and branch-PE 24.

A copper sheet clamping groove (A00); a primary cutting edge (A01); a main body (A02); a primary wire bayonet (A03); a blade edge (A04); a secondary cutting edge (A05); a secondary lead bayonet (A06);

a body width (a); the bayonet height (b) of the primary lead; a secondary lead bayonet width (c); a primary wire bayonet width (d); a primary wire bayonet width (e); a primary cutting edge width (f); secondary cutting edge width (g); a body thickness (h); a secondary edge height (i); a blade edge width (j); an included angle (k) between the primary cutting edge and the axis of the primary lead bayonet; the secondary lead bayonet height (l); included angle (m) between secondary cutting edge and secondary wire bayonet axis

The SPD module, A base 251, module upper cover 252, module lower cover 253, B base 254 and SPD module shell fragment 255 with connect inserted sheet 256, I cavity 2511, the inserted sheet passes through groove 2512, buckle 2513, the inserted sheet passes through breach 2541, II cavity 2542, cover inserted sheet through hole 2531, lower cover buckle 2532.

Detailed Description

The present invention and the compatible socket output and cable output used by the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the high-reliability PDU compatible with the socket output and cable output and centrally installed through the two sides of the bus for power distribution comprises an end waterproof joint 1, an incoming line installation end plate 2, an incoming line insulation end plate 3, a shell 4, a wire arranging device 5, an insulation end plate 6, an installation end plate 7, a plurality of socket modules, a panel 12, a breaker protection cover 13, a clamping type lossless wiring terminal 14, a bus bracket 15, a wiring terminal board 16, a waterproof wiring head 17, a breaker 18, a bus-N19, a bus-L20, a bus-PE 21, a branching-N22, a branching-L23 and a branching-PE 24; the socket modules include universal socket module 8, GB-10A socket module 9, IEC-C19 socket module 10, and/or IEC-C13 socket module 11.

Each bus is electrically connected with each corresponding branch line through a clamping type lossless wiring terminal 14, and each corresponding branch line is electrically connected with each module for connecting a power plug through a breaker 18; the inside of the waterproof connector lug 17 is provided with a branching-N22, a branching-L23 and a branching-PE 2; the bus-N19, the bus-L20 and the bus-PE 21 enter the shell 4 through the waterproof connector 1, the inlet wire installation end plate 2 and the inlet wire insulation end plate 3; the bus support 15 is clamped in the shell 4, and a groove for accommodating the clamping type lossless wiring terminal 14 is formed in the bus support 15; the panel 12 is clamped at the upper end of the shell 4 and is provided with a breaker protective cover 13; the upper ends of the circuit breakers 18 and the modules for connecting the power plugs are respectively clamped in the panels 12, the lower sections of the circuit breakers 18 and the modules for connecting the power plugs are respectively placed in the bus bar bracket 15, and the bus bar-N19, the bus bar-L20 and the bus bar-PE 21 are clamped in the bus bar bracket 15; waterproof joint 1, inlet wire installation end plate 2, the insulating end plate 3 of inlet wire are installed in the one end of shell 4, and insulating end plate 6, installation end plate 7 are installed at the other end of shell 4.

Outer casing

As shown in fig. 4 and 22, the outer shell 4 is a u-shaped groove, and comprises end plate mounting beams 41, bus bar support clamping rails 42 and a plate mounting platform 43; the mounting beams 41 are respectively arranged on the inner sides of the left and right vertical walls of the shell 4, and the mounting beams 41 axially penetrate through the shell 4; the bus bar support clamping rail 42 is arranged in the middle of the inner side of the lower part of the shell 4, and the bus bar support clamping rail 42 axially penetrates through the shell 4; the top parts of the left and right vertical walls of the shell 4 extend inwards to form a panel mounting platform 43 parallel to the bottom surface of the shell 4; an upper wire arranging device mounting groove 45 axially penetrating through the shell 4 is formed in the panel mounting platform 43, lower wire arranging device mounting grooves 44 axially penetrating through are formed in the left edge position and the right edge position of the bottom surface of the shell 4 respectively, and the wire arranging device 5 is fixed to the left outer surface and the right outer surface of the shell 4 respectively through the lower wire arranging device mounting grooves 44 and the upper wire arranging device mounting groove 45. The bus bar support 15 is inserted into the shell 4 and fixed with two mounting beams 41 through a bus bar support clamping rail 42; a fixing buckle mounting groove 46 is arranged at a lower position of the middle line of the outer sides of the left vertical wall and the right vertical wall of the shell 4.

Two axial terminal surfaces of end plate installation roof beam 41 and generating line support joint rail 42 all are equipped with self-tapping hole, and the one end on the axial terminal surface of shell 4 is installed with the insulating end plate 3 accessible self-tapping screw of inlet wire to inlet wire installation end plate 2, and the other end on the axial terminal surface of shell 4 is installed with installation end plate 7 accessible self-tapping screw to insulating end plate 6, and inlet wire installation end plate 2 and installation end plate 7 can be as required along the arbitrary 180 adjustment of rotatory in the shell axis.

Clamping type lossless wiring terminal

As shown in fig. 10 to 13, the clamping type lossless connection terminal 14 includes a housing 141 and a terminal copper sheet 142; the terminal copper sheets 142 comprise three U-shaped clamping grooves A, and the terminal copper sheets 142 are used for electrically connecting the bus with two branch lines. The structure of the U-shaped clamping groove A is the same as that of the U-shaped clamping groove A of the elastic sheet, and the U-shaped clamping groove A has the same advantages.

The terminal shell 141 comprises a shell cover 1412, a copper sheet mounting plate 1415 and a cover buckling plate 1416; one end of the copper sheet mounting plate 1415 is connected with one side of the shell cover 1412, and one side of the copper sheet mounting plate 1415 is connected with one side of the cover buckling plate 1416.

The housing cover 1412 is shaped like an L, and the housing cover 1412 is fastened with the cover fastening plate 1416 to wrap the terminal copper sheet 142.

The opposite surfaces of the copper sheet mounting plate 1415 and the flip cover buckling plate 1416 are respectively provided with three corresponding grooves, the grooves respectively form two distributing through holes 1413 and a bus through hole 1414, and the two distributing through holes 1413 are respectively positioned on two sides of the bus through hole 1414.

A copper sheet slot 1411 is formed in the middle of the copper sheet mounting plate 1415, and the terminal copper sheet 142 is inserted into the clamping type lossless wiring terminal housing 141 through the copper sheet slot 1411.

Bus support

As shown in fig. 21 and 22, the bus bar support 15 has a cross section in a shape of a Chinese character 'shan', and includes a support upright wall 151, a bus bar holding groove 153, and a bus bar holding upright wall 154; the vertical wall in the middle is a bus clamping vertical wall 154, and the vertical walls at two sides are support vertical walls 151; after the bus bar holder 15 is inserted into the housing 4, the top end of the holder upright wall 151 abuts against the end plate mounting beam 41; the lower section of the vertical wall 151 of the bracket is in an inner bending shape, and the bending part 155, the left and right vertical walls of the shell 4 and the bottom plate form a reinforcing rib accommodating cavity; a guide rail clamping groove 152 is formed in the middle of the lower portion of the bus bar support 15, and the guide rail clamping groove 152 is matched with the bus bar support clamping rail 42 of the shell 4; after the bus bar support 15 is inserted into the shell 4, the bus bar support is fixed in the shell 4 through the guide rail clamping groove 152 and the top end of the support vertical wall 151, the bus bar support clamping rail 42 and the end plate mounting beam 41 respectively; the bus clamping vertical wall 154 is arranged in the middle of the bus support 15, a bus clamping groove 153 with an opening at the upper part is arranged in the bus clamping vertical wall 154, six bus clamping grooves are respectively arranged on two inner vertical surfaces of the bus clamping groove 153, and the number of the clamping grooves can be set according to specific requirements; the two outer vertical surfaces of the upper end of the bus bar holding vertical wall 154 are respectively provided with a buckle which is mutually matched with the bracket buckle 125 of the panel 12.

Panel module

As shown in fig. 14 and 15, one end of the panel 12 is provided with a module installation notch 124 shaped like a Chinese character 'shan', a module protrusion fitting groove 128 is formed on the vertical wall of the module installation notch 12, and a module fixing rib 129 is formed at the closed end of the module installation notch 124; the other end of the panel 12 is provided with a panel mounting notch 127 matched with the module mounting notch 124; two trapezoidal convex holes 123 for installing the circuit breaker are arranged at the upper part of the panel 12, and the central lines of the trapezoidal convex holes 123 are respectively aligned with the central lines of the module installation notches 124 in the axial direction; the periphery of the inner surface of the trapezoidal convex hole 123 is respectively provided with a breaker fixing edge 122 which is used for being matched with the outer vertical surface of the breaker, when the breaker 18 is installed inside the panel 12, the breaker fixing edge 122 can clamp the uneven outer surface of the breaker 18, so that the breaker 18 is installed more stably; the left edge and the right edge of the panel 12 are bent inwards to form an installation chute matched with the panel installation platform 43, and the installation chute is provided with a plurality of buckles clamped with the panel installation platform 43; the left and right edges of the panel 12 are respectively provided with a screw mounting hole 121; the right and left edges of the panel 12 are provided with cable management device mounting notches 126 at the positions matched with the panel mounting platform 43; the lower surface of the panel 12 is provided with a mounting groove which axially penetrates through the panel 12, and the inner wall of the mounting groove is provided with a bracket buckle 125 which is matched with the buckle at the upper end of the vertical wall 154 of the bus bracket; self-tapping screws secure the panel 12 to the panel mounting platform 43 through the screw mounting holes 121.

Socket module

As shown in fig. 1, 2 and 3, the universal module 8, GB-10A module 9, IEC-C13 socket module 10 and IEC-C19-module 11 in this embodiment are substantially identical in structure, and each includes an upper cover 91 and a lower cover 95 that are fastened to each other and three resilient pieces that are installed in the upper and lower covers. The difference is that the opening of the plug-in sheet of the upper cover 91, the installation structure of each spring sheet in the opening, the contact part and the connection part of the spring sheet and the plug-in sheet of the plug, and the corresponding structure of the lower cover can be locally adjusted according to the requirements.

Taking GB-10A module 9 as an example, GB-10A module 9 includes an upper cover 91, a PE elastic piece 92, an N elastic piece 93, an L elastic piece 94, and a lower cover 95; the edge of the upper cover 91 is provided with a protruding bayonet lock 911, and the protruding bayonet lock 911 is matched with the module bump matching groove 128 of the panel 12; GB-10A module 9 further includes a ring wiring hole 913, an L-wire snap hole 914, a PE-wire snap hole 915, and an N-wire snap hole 916; the PE elastic piece 92, the N elastic piece 93, and the L elastic piece 94 are inserted into corresponding positions of the upper cover 91; the PE elastic pieces 92, the N elastic pieces 93 and the L elastic pieces 94 are respectively connected with respective U-shaped clamping grooves A through respective connecting parts, the branch-N22, the branch-L23 and the branch-PE 24 are respectively connected with the corresponding PE wire clamping holes 915, the L wire clamping holes 914 and the N wire clamping holes 916 in a linear mode, and the typical U-shaped clamping grooves A are arranged in the GB-10A module 9 along the diagonal line to enable the distance among the U-shaped clamping grooves to be as large as possible, so that the situation that the elastic pieces are contacted with each other to cause short circuit when deformed by external force and break through air to generate electric arcs when encountering instantaneous high voltage is avoided as much as possible, and the elastic pieces can be safely and accurately aligned with the corresponding wire clamping holes; the lower cover 95 further includes a top post 951 and three snaps 952, the snaps 952 mating with the securing openings 912 of the upper cover. After the lower cover 95 is mounted on the upper cover 91, the top pillar 951 abuts against appropriate parts of the elastic sheets of the PE elastic sheet 92, the N elastic sheet 93 and the L elastic sheet 94, and the appropriate parts are generally connecting parts, so that the mounting is firmer; the buckles 952 are arranged in a triangle; the lower cover 95 can be freely replaced according to the requirement of the load current, different lower covers 95 have the change that the heights of the lead clamping hole adjusting blocks 953 are different, the higher the lead clamping hole adjusting block 953 is, the smaller the lead clamping hole is, the smaller the number of leads is and/or the loadable current is, the smaller the lead clamping hole is, and the lower the load current is; and vice versa.

The branching-N22, the branching-L23 and the branching-PE 24 are connected into the corresponding U-shaped clamping grooves A through quick stamping and clamping connection, and the quick stamping and clamping connection means that the branching-N22, the branching-L23 and the branching-PE 24 are used for quickly clamping the wire body into the U-shaped clamping grooves A in a stamping mode through a high-voltage punch.

The U-shaped slot A can comprise a plurality of slots with different widths, and the width of a common slot can be set to be 2.5mm for the section²And a cross section of 4mm²The wires are simultaneously clamped.

The rapid stamping clamping connection is low in resistance, lasting and stable, temperature rise is low, and fire risks are eliminated; the whole process of the electrified conductor is fixed, and the electric contact point is sealed in the insulating outer shell, so that the electric potential safety hazards such as short circuit, contact oxidation and the like are eliminated; the internal annular wiring can be realized, the single-point fault power failure is eliminated, and the power failure range of multi-point faults is reduced; the bus has no broken node in the whole process, the connection is firm, and the node is clean. The problem that sandwich effect, electric stress and thermal stress caused by soldering and self-tapping screw connection are adopted to cause temperature rise and the risk of fire is avoided; the power distribution reliability is improved.

The external configurations of the jack modules described in this embodiment are not unique and are interchangeable (e.g., universal jack module 8, IEC-C13 jack module 10, and IEC-C19 jack module 11), but the internal spring arrangement and the basic configuration of the springs are the same or similar. In addition to the outlet module, a terminal board 16 and a waterproof terminal 17 with a plug wire panel are also provided for taking an external output function.

As shown in FIGS. 1 and 13, universal jack module 8, GB-10A jack module 9, IEC-C19 jack module 10, IEC-C13 jack module 11, and the face plate with plug conductors are mounted in "hill" type module mounting notches 124 in face plate 12;

the breaker protective cover 13 is buckled on the trapezoidal convex hole 123;

the circuit breaker 18 is arranged in the trapezoidal convex hole 123 of the panel 12, and the panel 12 is arranged on the panel mounting platform 43 of the shell 4 and fixed by screws;

relation of circuit connection

The bus-N19, the bus-L20 and the bus-PE 21 are connected with each branching-N22, branching-L23 and branching-PE 24 through the clamping type lossless wiring terminal 14; the bus-N19, the bus-L20 and the bus-PE 21 are arranged in the bus bracket 15; the branch-N22, branch-L23 and branch-PE 24 connect the universal outlet modules 8, GB-10A outlet modules 9, IEC-C19 outlet modules 10 and/or IEC-C13 outlet modules 11 and/or plug-carrying conductors through the circuit breakers 18 into the circuit of the PDU power distributor.

Spring plate

The PE elastic sheet 92, the N elastic sheet 93 and the L elastic sheet 94;

as shown in fig. 5 to 9, each spring piece and the terminal copper sheet 142 includes a "U" slot a, and at least one first-stage wire bayonet a03 is provided on a main body a02 thereof, and in order to facilitate the connection in a quick stamping and clamping manner, first-stage cutting edges a01 are respectively provided on both sides of an opening of the first-stage wire bayonet a 03. A secondary lead bayonet A06 is further arranged above the primary lead bayonet A03, two sides of the opening of the secondary lead bayonet A06 are respectively provided with a secondary cutting edge A05, and the width c of the secondary lead bayonet is smaller than the width e of the primary lead bayonet.

And a third-level lead bayonet is also arranged above the second-level lead bayonet A06, three-level cutting edges are respectively arranged on two sides of the opening of the third-level lead bayonet, and the width of the third-level lead bayonet is smaller than the width c of the second-level lead bayonet.

The first-stage cutting edge A01 is a single-bevel edge or a double-bevel edge, the width j of the edge of the first-stage cutting edge is 0.3mm, the width f of the first-stage cutting edge is 1mm, and the included angle k between the first-stage cutting edge and the axis of the first-stage wire bayonet is 45 degrees.

The width e of the primary lead bayonet is 1.7mm, and the height b of the primary lead bayonet is 5 mm; the first-level cutting edge A01 and the first-level lead bayonet A03 are matched for clamping the core material with the cross section area of 4mm²The power supply lead of (1).

The secondary cutting edge A05 is a single-bevel edge or a double-bevel edge, the width j of the edge of the blade is 0.3mm, and the width g of the secondary cutting edge is 0.25 mm; the height i of the secondary cutting edge is 1.4 mm; the included angle m between the secondary cutting edge and the axis of the secondary lead bayonet is 45 degrees.

The width c of the secondary lead bayonet is 1.2mm, and the height l of the secondary lead bayonet is 3 mm; the secondary cutting edge A05 and the secondary lead bayonet A06 are matched for clamping the cross-sectional area of the core material to be 2.5mm²The power supply lead of (1).

The thickness h of the main body is 0.6 mm.

The width d of the blade body of the primary cutting edge is at least 2.4 mm.

The width a of the main body is at least 7 +/-0.05 mm

The U-shaped clamping groove A of the common elastic sheet is provided with one piece, but the U-shaped clamping groove A has enough strength due to deformation, and the two U-shaped clamping grooves A can be overlapped at a certain distance.

Insulating end plate

As shown in fig. 18, the insulated end cap comprises an incoming insulated end plate 3 and an insulated end plate 6; the incoming line insulation end plate 3 and the insulation end plate 6 are rectangular; seen from the front surface 31, a circular opening is arranged in the middle of the left side of the center line of the incoming line insulation end plate 3; the four edges of the front surface 31 of the incoming line insulation end plate 3 are provided with raised edges, wherein the middle positions of the left raised edge, the right raised edge and the lower raised edge are provided with end plate mounting through holes 33, the middle position of the upper raised edge is provided with an I-shaped mounting end plate fixing column 34A, and the mounting end plate fixing column 34A is matched with a screw mounting hole 2e on the incoming line mounting plate 2; four stepped II-shaped mounting end plate fixing columns 34B are arranged at four corners of the front surface 31, and the II-shaped mounting end plate fixing columns 34B are matched with II-shaped through holes 2d in the inlet wire mounting end plate 2; the upper edge of the back surface 32 of the insulating end plate 3 is provided with a chute protrusion 35; two upper vertex angle positions of the back surface 32 are respectively provided with an I-shaped fixing column 36a, and the I-shaped fixing columns 36a are matched with the lower end surface of a panel mounting platform 43 of the shell 4; two lower vertex angles of the back 32 are respectively provided with a II-type fixing column 36b, and the II-type fixing column 36b is matched with a convex part inside a fixing buckle mounting groove 46 of the shell 4. A ground terminal slot 37 is provided in the middle of the bottom of the back 32 for fixing the ground terminal of the PDU casing.

As shown in fig. 18, 19 and 20, the insulating end plate 6 differs from the incoming insulating end plate 3 in that there is no circular opening and the rest of the structure is the same or similar.

Mounting end plate

As shown in fig. 16 and 17, the line inlet mounting plate 2 comprises an end plate part 2a and a mounting plate part 2b, and the end plate part 2a and the mounting plate part 2b form an included angle of 90 °; the end plate part 2a is rectangular, and the end plate part 2a is provided with a circular wire inlet 2 c; four II-shaped through holes 2d are formed in the four corners, and the II-shaped through holes 2d are matched with the stepped II-shaped mounting end plate fixing columns 34B on the incoming line insulating end plate 3; screw mounting holes 2e are formed in the middle positions of the four sides of the end plate part 2 a; the mounting plate portion 2b is provided with three mounting grooves 2 f.

As shown in fig. 16 and 17, the mounting end plate 7 and the incoming line mounting end plate 2 are different in that the structural features of the other parts are the same or similar without the circular incoming line port 2 c.

SPD module (not shown in figure 1)

As shown in fig. 23 to 27, the SPD module includes a base module and a plug module; the base module is arranged in the shell 4 and connected with the PDU circuit in parallel, and the plug-in module is inserted on the base module and connected with the PDU circuit through the base module.

The base module comprises a base A251, a base B254 and an SPD module elastic sheet 255; base A251 and base B254 are U-shaped, the lower parts of base A251 and base B254 are respectively provided with a cavity 2511 and 2542 for installing SPD module spring 255, when base A251 and base B254 are buckled together, SPD module spring 255 can be wrapped in the two cavities 2511 and 2542; the lower surface of the inside of the base A251 is provided with three inserting sheet passing grooves 2512, the lower surface of the inside of the base B254 is provided with three inserting sheet passing notches 2541, and the inserting sheet passing grooves 2512 of the base A251 and the inserting sheet passing notches 2541 of the base B254 are combined together to form a base inserting sheet passing hole; the position of the base inserting sheet through hole corresponds to the position of the SPD module elastic sheet in the cavity; buckles 2513 are arranged on the left vertical wall and the right vertical wall of the base A251, and clamping grooves 2543 corresponding to the buckles are arranged on the left vertical wall and the right vertical wall of the base B254, so that the base A251 and the base B254 are more firmly mounted with each other, and the SPD module elastic sheet 255 is more firmly wrapped in the cavity.

The plug-in module comprises a module upper cover 252, a module lower cover 253 and a connecting plug-in piece 256; the upper part of the connecting insertion sheet 256 is connected with the PCB 257; the module lower cover 253 is provided with module lower cover insert through holes 2531 corresponding to the positions of the connecting inserts 256; when the plug-in module is plugged on the base module, the connecting plug-in sheet 256 is connected to the corresponding position of the SPD module spring sheet 255 through the base plug-in sheet through hole and the module lower cover plug-in sheet 2531 through hole; the left edge and the right edge of the module lower cover 253 are respectively provided with a module lower cover buckle 2532, and the module lower cover 253 is buckled at the bottom of the module upper cover 252 to fix the PCB 257 in the cavity of the module upper cover 252; the left and right vertical walls of the module upper cover 252 are provided with clamping holes matched with the module lower cover in a buckling manner, and the upper surface of the module upper cover 252 is also provided with a power supply, a grounding and a failure indicator lamp display hole respectively; the left and right sides of the module upper cover 252 are provided with fixing buckles for locking the plug-in module on the base module, and the two sides of the fixing buckles are also provided with positioning ribs for enabling the plug-in module to be more stable when being inserted into the base module. The fool-proof function is realized by the offset connection of the insertion sheet 256.

The base A251, the base B254 and the SPD module elastic sheet 255 form a base module whole, and are arranged in the shell 4 and connected with a PDU circuit; the module upper cover 252, the module lower cover 253 and the connecting insertion sheet 256 form a plug-pull module whole body which is arranged on the base module and connected to the PDU circuit in parallel; the pluggable module can be replaced as required without cutting off power supply, the work of a power supply object is not influenced, and the hot plug function of the SPD module in the PDU power distributor circuit is realized.

Temperature rise test

According to the stipulation of ' the communication industry standard YD/T2063-2009 of the people's republic of China ': the experimental time is one hour, and the temperature rise does not exceed 45K. In order to achieve a more convincing effect in the experiment, the measured data is data when the measured piece reaches constant temperature saturation, and the time duration is about 3 hours.

Experimental equipment: a paperless temperature rise recorder (manufacturer: Hangzhou American automation technology limited company, model MIK5016A, No. 210904011E36001),

the experimental conditions are as follows: 4 groups of loads, each group of current 16A, resistance 15 omega, rated power 10KW, experimental load power 4KW, total load 64A, power voltage 250V, PDU bus sectional area 9mm^2.Ring bus 4+2.5mm²

Subject: and the socket output and the cable output are compatible, and the high-reliability PDU is distributed on two sides of the through bus.

The experimental method comprises the following steps: the paperless temperature rise recorder respectively detects and records the temperature of the plug, the PDU shell, the input cable sheath, the copper sheet (spring sheet) and the environment through the temperature sensing line until each temperature reaches saturation.

The record table is as follows:

TABLE 1

Table 1 corresponds to fig. 28.

TABLE 2

Table 2 corresponds to fig. 29.

According to the tables 1 and 2, the highest temperature rise is about 20K, which is far lower than 45K required in the communication industry standard YD/T2063-2009 of the people's republic of China.

Experimental data are available: the invention has low resistance, reliability, durability, stability and small temperature rise in connection, and eliminates the fire risk.

It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.

Claims (4)

1. The utility model provides a direct current PDU power distributor's bus bar support which characterized in that: the section of the bus support (15) is in a shape of Chinese character 'shan', and the bus support comprises a support vertical wall (151), a bus clamping groove (153) and a bus clamping vertical wall (154); the vertical wall in the middle is a bus clamping vertical wall (154), and the vertical walls at two sides are support vertical walls (151); the bus clamping vertical wall (154) is internally provided with a bus clamping groove (153) with an opening at the upper part, and two inner vertical surfaces of the bus clamping groove (153) are respectively provided with a plurality of clamping grooves for clamping buses.

2. The bus bar support of claim 1, wherein: the lower section of the support vertical wall (151) is of an inward bending shape, and after the bus support (15) is inserted into the shell (4), the bending part (155) of the support vertical wall, the left vertical wall and the right vertical wall of the shell (4) and the bottom plate form a reinforcing rib accommodating cavity.

3. The bus bar support of claim 1, wherein: the middle position of the lower part of the bus support (15) is provided with a guide rail clamping groove (152) matched with the bus support clamping rail (42) of the shell (4).

4. The bus bar support of claim 1, wherein: two outer vertical surfaces at the upper end of the bus clamping vertical wall (154) are respectively provided with a buckle.