CN214255586U - Bottom box and junction box - Google Patents

Abstract

The utility model provides a end box and terminal box relates to terminal box technical field. The bottom box comprises a box body and a plurality of wiring bars, wherein each wiring bar comprises an insulating shell and a busbar arranged in the insulating shell, the insulating shell is provided with a plurality of wire insertion holes and a plurality of groups of locking screws, and the plurality of groups of locking screws correspond to the plurality of wire insertion holes one by one; the plurality of wiring banks are all fixedly arranged in the box body and are arranged at intervals; the box body is provided with a plurality of threading holes at positions different from the wiring row. The junction box comprises a box cover and the bottom box, wherein the box cover is detachably arranged at the box opening of the bottom box. The bottom box carries out confluence connection on the wire connectors of different wires through a plurality of wiring bars, and the wiring bars are arranged at intervals, so that the occurrence of contact short circuit between different wire connectors is effectively reduced; and the wiring row is high in connection firmness to the wire connectors, so that a circuit can be effectively ensured, the connection operation is convenient and fast, and the follow-up maintenance difficulty is small.

Description

Bottom box and junction box

Technical Field

The utility model relates to a terminal box technical field particularly, relates to a end box and terminal box.

Background

The junction box is one of the decorative electrician accessories, the joint part of the electric wire is in transition connection in the junction box, and the junction box plays a role in protecting the joint part of the electric wire in the junction box; the internal bus connection wire generally adopts a mode of splicing a plurality of wire connectors, but the spliced wire connectors are easy to loosen to cause poor contact; in addition, the spliced connector is large in size and not easy to bend, the difficulty of placing the spliced connector into a junction box is high, and different types of wire connectors are easy to contact and short-circuit, so that great inconvenience is brought to installation operation and later overhaul work.

That is, when a large number of wires are connected, the wire joint has poor splicing connectivity in the junction box, and is easy to loosen to cause poor contact; and the spliced joints are large in size, different joints are easy to contact and short-circuit, and the installation and maintenance difficulty is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bottom box and a junction box, which solve the problem that when a plurality of connecting wires are connected, the wire joint has poor hinging and connecting degree in the junction box, and is easy to loose to cause poor contact; and the joints after splicing are large in size, different joints are easy to contact and short-circuit, and the difficulty in installation and maintenance is high.

In order to solve the problems, the utility model provides a bottom box, which comprises a box body and a plurality of wiring bars, wherein each wiring bar comprises an insulating shell and a busbar arranged in the insulating shell, the insulating shell is provided with a plurality of plug wire holes and a plurality of groups of locking screws, and the plurality of groups of locking screws are in one-to-one correspondence with the plurality of plug wire holes; the plurality of wiring banks are all fixedly arranged in the box body and are arranged at intervals; the box body is different from the position of the wiring row is provided with a plurality of threading holes.

Optionally, the wiring bar is a rectangular body, the plurality of wire insertion holes are all located on the first side wall of the insulating shell, and the plurality of wire insertion holes are uniformly arranged at intervals along the length direction of the first side wall; the multiple groups of locking screws are all located on the second side wall of the insulating shell, the second side wall is adjacent to the first side wall, and the number of the locking screws in each group of locking screws is two.

Optionally, a plurality of the terminal blocks are all arranged at the bottom of the box body.

Optionally, the box body is a square box, the number of the wiring rows is four, and the four wiring rows are correspondingly arranged at four corners of the box bottom of the box body one by one;

or, the box body is a rectangular box, and a plurality of the wiring rows are arranged at intervals along the length direction of the box body.

Optionally, the opposite positions of the inner side wall of the box body are respectively provided with a connecting seat, and the end faces, facing the box opening of the box body, of the connecting seats are provided with connecting holes.

Optionally, the connecting hole is a kidney-shaped hole, and a length direction of the opening of the kidney-shaped hole is consistent with an extending direction of the corresponding side wall.

Optionally, the box opening end face of the box body is in an inwards concave step shape from outside to inside, the inwards concave area forms a limiting groove extending along the circumferential direction of the box opening end face, and the limiting groove is used for being matched with a limiting boss of the junction box cover for limiting.

Optionally, the box body includes a top frame portion and a bottom box portion, the side enclosing plate of the bottom box portion is a first side enclosing plate, the side enclosing plate of the top frame portion is a second side enclosing plate, the first side enclosing plate is inserted in the second side enclosing plate in a sliding mode, an elastic part is connected between the first side enclosing plate and the second side enclosing plate, and the elastic part is used for driving the first side enclosing plate and the second side enclosing plate to move away from each other.

Optionally, the second side enclosing plate is provided with a sliding groove extending along the depth direction of the second side enclosing plate, the outer wall surface of the first side enclosing plate is provided with a sliding joint, and the sliding joint is in sliding clamping connection with the sliding groove.

The utility model also provides a terminal box, including lid and above-mentioned end box, the lid is detachable install in the box mouth department of end box.

The utility model provides a bottom box carries out the confluence connection to the wire connectors of different electric wires through a plurality of wiring bars, the wiring bars are arranged at intervals, and the wire connectors are inserted in the insulating shell, the insulating shell can play an insulating role, thereby effectively reducing the occurrence of contact short circuit between different wire connectors; in addition, each wire joint all fastens through the locking screw that corresponds, and wire joint is high with the firm in connection degree of busbar, can effectively ensure the passageway of circuit, and connects the simple operation degree height, and the follow-up maintenance degree of difficulty is little.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of a first form of a bottom case provided by the present invention;

FIG. 2 is a front view of the back box of FIG. 1;

FIG. 3 is a schematic view of a bottom case according to a second embodiment of the present invention;

fig. 4 is a schematic view of a box cover in a junction box provided by the present invention.

Description of reference numerals:

100-a cartridge; 110-threading holes; 120-a connecting seat; 121-connecting hole; 130-a limiting groove; 140-a top frame portion; 141-a second side enclosing plate; 150-bottom box portion; 151-first side coaming; 160-an elastic member; 200-a line bank; 210-an insulating shell; 211 — a first sidewall; 212-a second side wall; 220-wire insertion hole; 230-locking screws; 300-a box cover; 310-limit boss; 320-reinforcing bosses; 330-through hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present embodiment provides a bottom case, as shown in fig. 1, which includes a case body 100 and a plurality of wiring bars 200, where the wiring bars 200 include an insulating case 210 and bus bars installed in the insulating case 210, the insulating case 210 is provided with a plurality of wire insertion holes 220 and a plurality of sets of locking screws 230, and the plurality of sets of locking screws 230 correspond to the plurality of wire insertion holes 220 one to one; the plurality of wiring blocks 200 are all fixedly arranged in the box body 100, and the plurality of wiring blocks 200 are arranged at intervals; the box body 100 is provided with a plurality of threading holes 110 at positions different from the terminal block 200.

The embodiment further provides a junction box, which comprises a box cover 300 and the bottom box, wherein the box cover 300 is detachably mounted at the box opening of the bottom box.

The bottom case and the junction box provided by the embodiment, wherein the bottom case comprises a case body 100 used as a containing base body, a wiring bar 200 used for connecting wire joints and a threading hole 110 used for threading a power supply wire; the junction box comprises the bottom box for connecting the wires in a converging mode and a box cover 300 for plugging a box opening of the bottom box to achieve an isolation protection effect on the wire connectors in the bottom box.

When the neutral wire connecting box is used, a plurality of wire connecting bars 200 can be distinguished, one wire connecting bar 200 is used for connecting a neutral wire in a converging manner, one wire connecting bar 200 is used for connecting a live wire in a converging manner, one wire connecting bar 200 is used for connecting a ground wire in a converging manner (according to actual requirements, when no neutral wire is needed, the wire connecting bar 200 is not arranged), then neutral wire joints of multiple lines are inserted into the box body 100 through the wire penetrating hole 110 and are inserted into the wire inserting holes 220 of the corresponding wire connecting bar 200, after the neutral wire joints are contacted with the bus bars in the wire connecting bar 200, the locking screws 230 at corresponding positions are screwed down, the neutral wire joints are pressed on the bus bars by the locking screws 230, and therefore, a plurality of neutral wire joints are connected at different positions of the bus bars, and the bus connection of the neutral wire connecting bars 200 to the zero wire joints is realized (one part of the neutral wires serves as the converging wires, and the other part of the neutral wires serves as the converging wires). Similarly, a plurality of live wire connectors are connected to the corresponding wiring bar 200, and a plurality of ground wire connectors are connected to the corresponding wiring bar 200, so that the confluence connection of the multi-path lines is completed; then, the box cover 300 is installed and plugged at the box opening of the bottom box, the wiring bar 200 is located in a containing cavity enclosed by the box cover 300 and the bottom box, and the junction box correspondingly plays a role in isolating and protecting the connection position of the wiring bar 200 and the wire connector.

The bottom box carries out confluence connection on the wire connectors of different wires through a plurality of wiring bars 200, the wiring bars 200 are arranged at intervals, the wire connectors are inserted into the insulating shell 210, and the insulating shell 210 can play an insulating role, so that the occurrence of contact short circuit between different wire connectors is effectively reduced; in addition, each wire-terminal all fastens through the locking screw 230 that corresponds, and wire-terminal is high with the firm in connection degree of busbar, can effectively ensure the passageway of circuit, and connects the simple operation degree height, and follow-up maintenance degree of difficulty is little.

Specifically, in this embodiment, as shown in fig. 1, the wiring block 200 may be a rectangular body, a plurality of wire insertion holes 220 are all located on the first side wall 211 of the insulating housing 210, and the plurality of wire insertion holes 220 are uniformly arranged at intervals along the length direction of the first side wall 211; the plurality of sets of locking screws 230 are all located on the second side wall 212 of the insulating housing 210, the second side wall 212 is adjacent to the first side wall 211, and the number of the locking screws 230 in each set of locking screws 230 is two. Here is a specific form of the wire connecting bar 200, initially, the locking screws 230 are unscrewed, there is an insertion gap between the locking screws 230 and the bus bar support, during connection, the wire terminal deep inside the box body 100 can be extended into the insulating housing 210 through the wire insertion hole, the insertion direction of the wire terminal is consistent with the arrangement direction of the two corresponding locking screws 230, then the two locking screws 230 corresponding to the wire insertion hole 220 are screwed, and the two locking screws 230 press different positions of the wire terminal against the bus bar, thereby improving the connection firmness of the wire terminal and the bus bar and ensuring good contact between the two. Wherein, the number of each set of locking screws 230 is two, when one of the locking screws 230 is loosened, the other locking screw 230 can also ensure the compression of the wire connector, thereby further ensuring the compression of the wire connector by the locking screw 230. In addition, a plurality of wire inserting holes are uniformly arranged along the length direction of the first side wall 211 at intervals, accordingly, after connection, the wires are also uniformly arranged along the length direction of the first side wall 211 at intervals, the arrangement uniformity is high, and the occurrence of interference winding between the wires can be reduced.

Specifically, in the present embodiment, as shown in fig. 1, a plurality of terminal blocks 200 are provided at the bottom of the box body 100. The wire terminal is connected to the terminal block 200, and the connection body formed by the wire terminal and the terminal block is located at the bottom area of the box body 100, so as to reduce the occurrence of the situation that the connection body protrudes outwards from the box opening of the box body 100, and accordingly, the connection between the box cover 300 and the box body 100 and the protection effect of the box cover 300 on the connection body are ensured.

Alternatively, in this embodiment, as shown in fig. 1, the box body 100 may be a square box, the number of the wiring rows 200 is four, and the four wiring rows 200 are correspondingly arranged at four corners of the bottom of the box body 100. On one hand, when four wiring bars 200 are arranged in the form, the distance between adjacent wiring bars 200 is large, and after different wires are respectively connected to the corresponding wiring bars 200, the probability of interference, contact and the like between the wires is small, so that the occurrence of short circuit caused by wire contact is effectively reduced, and the arrangement regularity of the wires can be effectively improved; on the other hand, two wire connecting bars 200 at appropriate positions can be selected from the four wire connecting bars 200 according to the arrangement mode of the wires for connecting the zero wire joint and the live wire joint respectively, and the other wire connecting bar 200 can be used for connecting the ground wire joint as required, so as to reduce the cross winding of the wires in the box body 100; the last wire bank 200 can be used as a spare, and when one of the wire banks 200 fails, the spare wire bank 200 can be replaced, thereby improving the practicability of the junction box. Preferably, eight threading holes 110 are provided, two threading holes 110 are provided on each side wall of the box body 100, the two threading holes 110 are arranged at intervals along the width direction of the corresponding side wall, then four corners of the box body 100 are provided, two threading holes 110 on two sides of each corner correspond to one wiring row 200 of the corner, and the wire connectors are connected with the corresponding wiring rows 200 through the threading holes 110, so that the occurrence of poor winding condition of wires in the box body 100 is further reduced; of course, a threading hole 110 may be provided at the bottom center of the box body 100, or a wiring strip 200 may be provided at the bottom center of the box body 100 as required.

Alternatively, the box body 100 of the junction box may be a rectangular box, and the plurality of terminal blocks 200 may be arranged at intervals along the length direction of the box body 100. Here, in another form of the arrangement of the box body 100 and the terminal block 200, the plurality of terminal blocks 200 are arranged at intervals along the length direction of the rectangular box, so that the intervals between two adjacent terminal blocks 200 can be effectively ensured, and the wire connectors are connected to different terminal blocks 200 according to the types, thereby correspondingly reducing the contact interference between wires.

In this embodiment, as shown in fig. 1 and fig. 2, a connecting seat 120 may be disposed at a position opposite to the inner side wall of the box body 100, and a connecting hole 121 is disposed on an end surface of the connecting seat 120 facing the box opening of the box body 100. Here, a specific detachable connection manner of the bottom case and the cover 300, and accordingly, as shown in fig. 4, two penetrating holes 330 are formed at opposite sides of the cover 300, and after the connection of the wire connector to the terminal block 200 is completed, the two penetrating holes 330 of the cover 300 may be aligned with the two connection holes 121 of the case body 100, and then a screw is inserted through the penetrating hole 330 and screwed into the connection hole 121 to lock both sides of the cover 300, thereby completing the connection of the cover 300 to the case body 100. When the box cover 300 needs to be detached, the screws are screwed outwards, and the convenience in detachment is high.

In this embodiment, the connection hole 121 may be a waist-shaped hole, and a length direction of an opening of the waist-shaped hole is consistent with an extending direction of the corresponding side wall. With the view angle of fig. 2 as a reference, the two connecting seats 120 are respectively disposed on the left side wall and the right side wall of the box body 100, the left side wall and the right side wall both extend in the up-down direction, and then the openings of the connecting holes 121 on the two connecting seats 120 also extend in the up-down direction; correspondingly, as shown in fig. 4, two through holes 330 are respectively disposed at the left and right sides of the box cover 300, both the two through holes 330 are waist-shaped holes, and the openings of the waist-shaped holes also extend in the up-down direction, so that when the box cover 300 is aligned with the box body 100, the positions of the connecting holes 121 and the through holes 330 in the up-down direction may have a certain deviation, and as long as the connecting holes 121 and the through holes 330 have a certain overlapping area, the connection of screws thereto can be achieved, thereby reducing the precision requirement for the processing positions of the through holes 330 and the connecting holes 121, and correspondingly reducing the processing cost thereof; and the box cover 300 can be adapted to different types of bottom boxes, thereby improving its applicability.

Of course, in other embodiments, the box cover 300 and the bottom box may be detachably fixed by a snap connection or the like.

In this embodiment, as shown in fig. 3, the box opening end surface of the box body 100 may be in an inward concave step shape from outside to inside, the inward concave area forms a limiting groove 130 extending along the circumferential direction of the box opening end surface, and the limiting groove 130 is used for being matched with the limiting boss 310 of the junction box cover 300 for limiting. Correspondingly, as shown in fig. 4, one side of the box cover 300 facing the bottom box is provided with a limit boss 310 extending along the circumferential direction, the limit boss 310 is matched with the limit groove 130, when the box cover 300 is installed, the limit boss 310 can be inserted into the limit groove 130 in a matching manner, the side wall of the limit groove 130 limits the installation position of the limit boss 310, the insertion depth of the limit boss 310 is limited by the bottom wall of the limit groove 130, thereby limiting the relative connection position of the box cover 300 and the box body 100, enabling the penetrating hole 330 to correspond to the connection hole 121, facilitating the screwing in of screws, and further improving the connection convenience and connection position accuracy of the box cover 300 and the bottom box.

Preferably, as shown in fig. 4, two reinforcing bosses 320 may be provided at the inner side of the position-limiting boss 310, and the penetration hole 330 is provided at the reinforcing bosses 320. The reinforcing bosses 320 can enhance the strength of the box cover 300, and reduce the damage of the strength of the box cover 300 caused by the processing of the through holes 330, thereby ensuring the normal use of the box cover 300.

In this embodiment, as shown in fig. 3, the box body 100 may include a top frame portion 140 and a bottom box portion 150, a side enclosing plate of the bottom box portion 150 is a first side enclosing plate 151, a side enclosing plate of the top frame portion 140 is a second side enclosing plate 141, the first side enclosing plate 151 is slidably inserted into the second side enclosing plate 141, and an elastic member 160 is connected between the first side enclosing plate 151 and the second side enclosing plate 141, and the elastic member 160 is used for driving the first side enclosing plate 151 and the second side enclosing plate 141 to move away from each other. Here, in a form that the box 100 can be extended and retracted, when the box 100 is not subjected to an external force, the elastic member 160 drives the first side enclosing plate 151 and the second side enclosing plate 141 to move away from each other to a first position, and at this time, the depth of the box 100 formed by the bottom box portion 150 and the top frame portion 140 is the largest, and the depth is defined as a first depth; when the mounting groove received interference such as reinforcing bar, circuit when the wall of job site offered the mounting groove and led to the mounting groove degree of depth to be less than first degree of depth, pack box body 100 into this mounting groove in, end box portion 150 receives the hindrance of mounting groove tank bottom, and elastic component 160 is compressed, and the degree of depth that first side bounding wall 151 inserted second side bounding wall 141 deepens, and the degree of depth of box body 100 is less than first degree of depth to make this end box can be applicable to the mounting hole of the different degree of depth, and then further improve the suitability of end box.

Specifically, in this embodiment, a sliding groove extending in the depth direction of the second side enclosing plate 141 may be provided, and the outer wall surface of the first side enclosing plate 151 is provided with a sliding joint which is slidably engaged with the sliding groove. Here, in a specific form that the first side enclosing plate 151 is slidably connected with the second side enclosing plate 141, the sliding connector is slidably engaged with the sliding groove, two ends of the sliding groove can limit the sliding stroke of the sliding connector, when the box body 100 is not subjected to an external force, the sliding connector slides to a first end in the depth direction of the sliding groove under the pushing action of the elastic member 160, at this time, the depth of the first side enclosing plate 151 inserted into the second side enclosing plate 141 is smaller, and the depth of the box body 100 is the largest and is the first depth; when the top frame part 140 and the bottom case part 150 are pushed by opposite forces, the sliding joint can slide along the sliding groove to the second end, and when the sliding joint slides to the second end, the depth of the first side enclosing plate 151 inserted into the second side enclosing plate 141 is larger, the depth of the case 100 is the smallest, and is the second depth, and accordingly, the depth of the case 100 can be adjusted between the first depth and the second depth. Preferably, there are four sliding grooves, and the four sliding grooves are disposed in one-to-one correspondence with the four side plates of the second side enclosing plate 141, and correspondingly, there are four sliding joints. Specifically, the elastic member 160 may be a spring, and the number of the springs is four, and the four springs are disposed corresponding to the four sidewalls of the box 100 one by one.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The bottom box is characterized by comprising a box body (100) and a plurality of wiring bars (200), wherein each wiring bar (200) comprises an insulating shell (210) and a bus bar arranged in the insulating shell (210), the insulating shell (210) is provided with a plurality of wire insertion holes (220) and a plurality of groups of locking screws (230), and the plurality of groups of locking screws (230) correspond to the plurality of wire insertion holes (220) one by one; the plurality of wiring banks (200) are all fixedly arranged in the box body (100), and the plurality of wiring banks (200) are arranged at intervals; the box body (100) is provided with a plurality of threading holes (110) at positions different from the wiring row (200).

2. The bottom case as claimed in claim 1, wherein the wiring row (200) is a rectangular body, a plurality of the wire insertion holes (220) are all located on the first side wall (211) of the insulating shell (210), and the plurality of the wire insertion holes (220) are uniformly spaced along the length direction of the first side wall (211); the multiple groups of locking screws (230) are all located on the second side wall (212) of the insulating shell (210), the second side wall (212) is adjacent to the first side wall (211), and the number of the locking screws (230) in each group of the locking screws (230) is two.

3. A back box according to claim 1, wherein a plurality of the terminal blocks (200) are provided at the bottom of the box body (100).

4. A back box according to claim 3, wherein the box body (100) is a square box, the number of the terminal blocks (200) is four, and four terminal blocks (200) are correspondingly arranged at four corners of the bottom of the box body (100);

or, the box body (100) is a rectangular box, and the plurality of the wiring bars (200) are arranged at intervals along the length direction of the box body (100).

5. A bottom case as claimed in any one of claims 1 to 4, wherein a connecting seat (120) is provided at each of the opposite positions of the inner side walls of the case body (100), and a connecting hole (121) is provided at the end surface of the connecting seat (120) facing the opening of the case body (100).

6. A back box according to claim 5, wherein the connection hole (121) is a kidney-shaped hole, and the length direction of the kidney-shaped hole aperture coincides with the extending direction of the corresponding side wall.

7. The bottom case according to any one of claims 1 to 4, wherein the case opening end surface of the case body (100) is in a concave step shape from outside to inside, the concave area forms a limiting groove (130) extending along the circumferential direction of the case opening end surface, and the limiting groove (130) is used for matching with a limiting boss (310) of the junction box cover (300) for limiting.

8. A bottom case according to any of claims 1 to 4, wherein the case body (100) comprises a top frame portion (140) and a bottom case portion (150), the side panel of the bottom case portion (150) is a first side panel (151), the side panel of the top frame portion (140) is a second side panel (141), the first side panel (151) is slidably inserted into the second side panel (141), and an elastic member (160) is connected between the first side panel (151) and the second side panel (141), and the elastic member (160) is used for driving the first side panel (151) and the second side panel (141) to move away from each other.

9. A back box according to claim 8, wherein the second side enclosing plate (141) is provided with a sliding groove extending in the depth direction thereof, and the outer wall surface of the first side enclosing plate (151) is provided with a sliding joint which is slidably engaged with the sliding groove.

10. A junction box comprising a box cover (300) and a bottom box according to any of claims 1-9, wherein the box cover (300) is detachably mounted at the box opening of the bottom box.

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