CN213878469U

CN213878469U - Junction box cover of power distribution unit and junction box thereof

Info

Publication number: CN213878469U
Application number: CN202023180203.3U
Authority: CN
Inventors: 张汪洋; 刘大明; 谢长友
Original assignee: Qianjin Electronic Suzhou Co ltd
Current assignee: Qianjin Electronic Suzhou Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-03
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a power distribution unit's junction box lid and terminal box thereof, the junction box lid includes this somatic part, be provided with two slotted holes on this somatic part, this somatic part is still including being located the fender portion of the below of slotted hole, fender portion certainly a lateral wall of slotted hole or the lower surface of this somatic part is downward and to the another side of slotted hole extends, fender portion is in projection on slotted hole place plane at least partially with the slotted hole coincidence. The terminal box cover is matched with the modularized section bar, the modularized terminal box matched with the terminal box cover is designed, in the production and use processes, the input cable can be conveniently assembled and disassembled only by opening the cover, and the terminal box cover realizes easy installation and universality of input power requirements of various specifications through ingenious design.

Description

Junction box cover of power distribution unit and junction box thereof

Technical Field

The utility model relates to a power distribution unit especially relates to power distribution unit's junction box lid and terminal box thereof.

Background

A PDU (Power Distribution Unit), which is a Power Distribution socket for a cabinet, is a product designed to provide Power Distribution for electrical equipment installed in the cabinet, has various series specifications of different functions, installation modes and different plug-in combinations, and can provide a suitable rack-mounted Power Distribution solution for different Power environments. Due to the application of the PDU, the power supply in the cabinet can be distributed more orderly, reliably, safely, professionally and attractively, and the maintenance of the power supply in the cabinet is more convenient and reliable.

The PDU product has single-phase, three-phase and direct-current components at the input end, and the difference of rated current is also a key performance parameter. However, the input junction box of the power distribution unit cannot accommodate single-phase and three-phase designs at the same time, and cannot meet the product performance requirements.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides a power distribution unit's junction box lid, the junction box lid includes the body portion, be provided with two slotted holes on the body portion, the body portion is still including being located the fender portion of the below of slotted hole, keep off the portion certainly a lateral wall of slotted hole or the lower surface of body portion is downward and to the another side extension of slotted hole, keep off the portion be in the projection on slotted hole place plane at least partially with the slotted hole coincidence.

Further, the blocking part is arc-shaped or inclined.

Further, the inclination angle of the blocking part is not more than 45 degrees.

Furthermore, the body part is a rectangular square plate with four top corners cut off, the four top corners of the body part are respectively provided with a long side part and a short side part which are perpendicular to each other, the long side part and the short side part are matched with the upper end part of the junction box base, and the body part is clamped into the upper end part of the junction box base.

Furthermore, the long edge part is provided with a clamping part extending outwards, the length of the clamping part is not more than that of the long edge part of the body part, the width of the clamping part is not more than that of the short edge part of the body part, and the clamping part is used for being clamped with the junction box base.

Further, the body portion is further provided with at least one screw hole disposed intermediate the slot hole.

Further, the distance from the upper surface of the junction box cover to the blocking part is not more than 8mm,

further, the thickness of the blocking part is not more than 2 mm.

Further, the utility model discloses still include a power distribution unit's terminal box, include as above the terminal box lid, still include the terminal box base, the terminal box base has the casing and forms a cavity, the casing has the upper end, terminal box lid block extremely will in the upper end the cavity seals.

Further, a three-phase component is included, the three-phase component being received within the cavity formed by the junction box base.

The utility model has the advantages as follows:

the terminal box base is provided with a mounting hole for single-phase input and a containing cavity for containing a three-phase component, and the three-phase component can be installed in the containing cavity, so that the terminal box can simultaneously meet three-phase current input, and therefore, the Power Distribution Unit (PDU) can simultaneously meet the requirements of single-phase, three-phase and direct current input and product performance in the design aspect of an input terminal box.

The terminal box cover is matched with the modularized section bar, the modularized terminal box matched with the terminal box cover is designed, in the production and use processes, the input cable can be conveniently assembled and disassembled only by opening the cover, and the terminal box cover realizes easy installation and universality of input power requirements of various specifications through ingenious design.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded view of a junction box according to an embodiment of the present invention;

fig. 2 is a perspective view of a terminal box base in a terminal box according to an embodiment of the present invention;

fig. 3 is a top view of a terminal block base in a terminal block in an embodiment of the invention;

fig. 4 is a cross-sectional view of a terminal block base in a terminal block in an embodiment of the invention;

fig. 5 is a side view of a terminal block base in a terminal block in an embodiment of the invention;

fig. 6 is a perspective view of a three-phase component in the junction box in an embodiment of the invention;

fig. 7 is a cross-sectional view of a three-phase component in a junction box in an embodiment of the invention;

fig. 8 is a perspective view of a junction box cover in the junction box of the embodiment of the present invention;

fig. 9 is a sectional view of a junction box cover in the junction box according to the embodiment of the present invention. Reference numerals of the above figures: a junction box-100; a junction box base-1; a housing-11; a bayonet-111; receiving cavity-112 connecting piece-12; mounting holes-13; a longitudinal plate-141; a transverse plate-142; -15 threaded hole; an upper end-16; a body portion-161; a branch-162; a channel-163; interface-164; a through-hole-165; a groove-17;

a three-phase component-2; a base-21; a clamping plate-22; a wiring hole-23; an auxiliary element-24;

a junction box cover-3; a body portion-31; a long side portion-311; short side portion-312; a clamping part-313; slot-32; a stop part-33.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

To achieve the above object, the present invention provides a terminal box 100 of a power distribution unit, as shown in fig. 1. The junction box 100 of the power distribution unit comprises a junction box base 1, a junction box cover 3 and a three-phase part 2. Junction box base 1 forms the cavity that is used for connecting the electric wire, junction box lid 3 will the cavity that junction box base 1 formed is sealed, three-phase part 2 can hold extremely in the junction box base 1 for this junction box 100 not only can satisfy single-phase current input, can also satisfy three-phase current input, increases the product compatibility and the suitability of this junction box 100, satisfies the different demands of product.

The terminal block base 1, the terminal block cover 3 and the three-phase component 2 will be explained in detail below.

As shown in fig. 2 and 4, the terminal box base 1 includes a housing 11, the housing 11 forms a cavity, a connecting member 12 is disposed in the cavity, and two rows and three columns of mounting holes 13 are disposed on the connecting member 12. Three mounting holes 13 in the first row are connected with internal wires, three mounting holes 13 in the second row are connected with input cables, and the cavity further comprises a containing cavity 112 for containing the three-phase component 2.

The bottom of the shell 11 has two relatively independent cavities, which divide the cavity into two cavities, and the two cavities respectively accommodate the mounting holes 13 in the first row and the second row. An elongated bayonet 111 is formed between the two bases.

As shown in fig. 6 and 7, the three-phase component 2 includes a base 21 and a clamping plate 22 perpendicular to the base 21, four wiring holes 23 are provided on the base 21, the wiring holes 23 are arranged in two rows and two columns, and the wiring holes 23 are provided on the same side of the clamping plate 22. The clamping plate 22 of the three-phase component 2 is inserted into the clamping opening 111, so that the three-phase component 2 is accommodated in the accommodating cavity 112.

Be provided with the metal clamp plate in the wiring hole 23, be located two of first line wiring hole 23 connects the inside wire, is located two of second line wiring hole 23 connects the input cable conductor, the metal clamp plate cooperation installation the input cable conductor with the inside wire.

The junction box base 1 is provided with a mounting hole 13 for single-phase input and a containing cavity for containing a three-phase component 2, and the three-phase component 2 can be installed in the containing cavity, so that the junction box 100 can simultaneously meet three-phase current input, and therefore, in the design aspect of the input end junction box 100, the Power Distribution Unit (PDU) can simultaneously meet the requirements of single-phase, three-phase and direct current input ends and product performance requirements.

In particular, the three-phase component 2 is accommodated into the accommodation cavity of the terminal block base 1, the wiring holes 23 of the first row in the three-phase component 2 being located below the mounting holes 1313 of the second row in the terminal block base 1. The input cable wires of the second row in the three-phase component 2 and the input cable wires of the second row in the junction box base 1 form a three-phase input electrical interface in a matching manner. Thereby realizing that the junction box 100 can simultaneously meet the requirements of single phase and three phase.

Specifically, as shown in fig. 2, the cavity in the terminal box base 1 has a partition plate therein, the partition plate includes a transverse plate 142 and two longitudinal plates 141 perpendicular to the horizontal plane, the longitudinal plates 141 are arranged in parallel and respectively intersect with the transverse plate 142, and the partition plate divides the accommodating cavity into two rows and three columns, which are respectively in one-to-one correspondence with the mounting holes 13. The mounting holes 13 are divided into respective area ranges, so that the wiring is clear and tidy, and the wiring is not messy.

Each mounting hole 13 is further provided with a metal pressing plate, and the metal pressing plates are used for matching the input cable and the internal lead.

In order to mount the junction box base 1 and the junction box cover 3, a threaded hole 15 is provided at the intersection of the transverse plate 142 and the longitudinal plate 141, and the threaded hole 15 is used for mounting the junction box cover 3.

As shown in fig. 2 and 4, the housing 11 further includes an upper end portion 16 disposed at four corners of the cavity, the upper end portion 16 includes a main body portion 161 and two branch portions 162 disposed horizontally, the branch portions 162 are vertically connected to two ends of the main body portion 161, and the main body portion 161 and the branch portions 162 are integrally formed.

The end of the branch part 162 has an upper layer and a lower layer, an interface 164 is formed between the upper layer and the lower layer in a hollow manner, and the interface 164 is clamped with the clamping part 313 of the junction box cover 3.

In addition, as shown in fig. 5, for the installation of the junction box base 1 with the profile, the lower surface of the branch part 162 has a guide groove 163, and the guide groove 163 can be fitted with the profile such that the guide groove 163 is fitted to the profile.

The side of the branch part 162 is provided with a through hole 165, and the through hole 165 is connected with the section bar in a matching way.

In the three-phase component 2, as shown in fig. 6 and 7, the snap plates 22 include three, one of the snap plates 22 is disposed between two columns of the wiring holes 23, and the other two snap plates 22 are respectively disposed between the wiring holes 23 and the edge of the base 21. The clamping plate 22 is divided into three parts for avoiding the intersection of the transverse plate 142 and the longitudinal plate 141 in the junction box base 1, and threaded holes 15 are arranged.

In addition, on the same straight line with the wiring holes 23, auxiliary pieces 24 are respectively arranged on two sides of each wiring hole 23, and the auxiliary pieces 24 are perpendicular to the base 21. A recess 17 is also correspondingly provided in the bottom of the terminal box base 1, into which recess 17 the auxiliary element 24 is inserted for assisting the assembly of the three-phase component 2 with the terminal box base 1.

In this embodiment, the height of the auxiliary member 24 does not exceed the height of the chucking plate 22.

In order to fix the three-phase component 2 to the terminal box base 1, the base 21 is further provided with a threaded hole 15 located in the middle of the wiring hole 23, and the three-phase component 2 and the terminal box base 1 are fixedly connected by being assembled with the threaded hole 15 through a screw.

In the three-phase component 2, the thickness of the base 21 is not more than 9 mm. The height from the top end of the clamping plate 22 to the base 21 is not more than 23 mm. In the terminal block base 1, the height from the upper end 16 to the bottom of the housing 11 is not more than 50 mm.

As shown in fig. 8 and 9, the terminal box cover 3 includes a body 31, two slots 32 are disposed on the body 31, the body 31 further includes a blocking portion 33 located below the slots 32, the blocking portion 33 extends downward from one side wall of the slots 32 or a lower surface of the body 31 and toward another surface of the slots 32, and a projection of the blocking portion 33 on a plane where the slots 32 are located at least partially coincides with the slots 32. The junction box cover 3 is clamped into the upper end part 16 of the junction box base 1 to seal the cavity.

Specifically, the blocking portion 33 is arc-shaped or inclined. The angle of inclination of the blocking portion 33 does not exceed 45 °.

The main body 31 is a rectangular square plate cut at four corners, the four corners of the main body 31 are respectively provided with a long side portion 311 and a short side portion 312 which are perpendicular to each other, the long side portion 311 and the short side portion 312 are matched with the upper end portion 16 of the junction box base 1, and the main body 31 is clamped into the upper end portion 16 of the junction box base 1.

The long side portion 311 has a clamping portion 313 extending outward, the length of the clamping portion 313 does not exceed the long side portion 311 of the main body portion 31, the width of the clamping portion 313 does not exceed the short side portion 312 of the main body portion 31, and the clamping portion 313 is used for clamping with the junction box base 1, so that the junction box cover 3 is clamped into the junction box base 1.

The body portion 31 is further provided with at least one screw hole, which is provided in the middle of the slot hole 32. The wiring box cover 3 and the wiring box base 1 are fixedly connected through screws penetrating through the screw holes.

In the terminal cover 3, the distance from the upper surface of the terminal cover 3 to the stopper 33 is not more than 8mm, and the thickness of the stopper 33 is not more than 2 mm.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. A junction box cover of a power distribution unit is characterized in that the junction box cover comprises a body part, two slotted holes are formed in the body part, the body part further comprises a blocking part located below the slotted holes, the blocking part extends downwards from one side wall of the slotted holes or the lower surface of the body part and towards the other surface of the slotted holes, and the projection of the blocking part on the plane of the slotted holes at least partially coincides with the slotted holes.

2. The power distribution unit junction box cover of claim 1, wherein said stops are curved or beveled.

3. The power distribution unit junction box cover of claim 2, wherein the angle of inclination of said stops does not exceed 45 °.

4. The terminal cover of a power distribution unit according to claim 1, wherein the body portion is a rectangular square plate cut at each of four corners, the four corners of the body portion have a long side portion and a short side portion perpendicular to each other, the long side portion and the short side portion are engaged with an upper end portion of a terminal block base, and the body portion is engaged with the upper end portion of the terminal block base.

5. The terminal box cover of claim 4, wherein the long side portion has a clamping portion extending outward, the clamping portion has a length not exceeding the long side portion of the body portion, the clamping portion has a width not exceeding the short side portion of the body portion, and the clamping portion is used for clamping with the terminal box base.

6. The junction box cover of a power distribution unit of claim 1, wherein said body portion is further provided with at least one screw hole, said screw hole being disposed intermediate said slot holes.

7. The power distribution unit junction box cover of claim 1, wherein the distance from the top surface to the stop is no more than 8 mm.

8. The power distribution unit junction box cover of claim 1, wherein said stop has a thickness of no more than 2 mm.

9. A junction box for a power distribution unit, comprising a junction box cover as claimed in any one of claims 1 to 8, and further comprising a junction box base having a housing forming a cavity, the housing having an upper end, the junction box cover being snapped into the upper end to close the cavity.

10. The junction box of the power distribution unit of claim 9, further comprising a three-phase component received within the cavity formed by the junction box base.