CN220209904U

CN220209904U - Improved junction box

Info

Publication number: CN220209904U
Application number: CN202321046644.5U
Authority: CN
Inventors: 张燊
Original assignee: Ningbo Jufeng Gaoke Electric Appliance Co ltd
Current assignee: Ningbo Jufeng Gaoke Electric Appliance Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-12-19
Anticipated expiration: 2033-05-05

Abstract

The utility model discloses an improved junction box which comprises a junction box body, a circuit board, binding posts and a junction seat, wherein the circuit board, the binding posts and the junction seat are all arranged in the junction box body, three binding posts are arranged at the upper ends of the circuit board and are respectively connected with a zero line, a fire wire and a ground wire, the lower ends of the circuit board are in plug-in fit with the junction seat, a plug-in groove is formed in the junction seat, a plug-in end is connected in the plug-in groove, a U-shaped part is arranged at the lower end of the plug-in end and is plugged into the plug-in groove, a saw tooth part is arranged at the middle end of the plug-in end and is clamped with the plug-in groove, the upper end of the plug-in end extends out of the plug-in groove and is plugged with the circuit board, the structure of the junction seat is simplified, the junction seat is reduced in size, the junction box is easier to assemble, the contact volume of the circuit board and components or support legs on the circuit board can be effectively prevented from being contacted with the junction seat, and the condition of short circuit and burning out is caused.

Description

Improved junction box

Technical Field

The utility model relates to the field of wiring equipment, in particular to an improved junction box.

Background

In the industries of hydraulic, pneumatic, electric appliances, etc.; the junction box is an indispensable accessory for the electromagnetic valve coil to be equivalent to the electric connection function of an external control part; be provided with the wire holder in the terminal box, be connected with the circuit board on the wire holder, owing to be connected with a plurality of components and parts and stabilizer blade on the circuit board, current wire holder is great with the volume of circuit board contact, the components and parts or the stabilizer blade on the circuit board take place unexpected contact easily, cause the condition that the short circuit burns out, the potential safety hazard appears easily, be provided with the binding post with ground connection on the wire holder in addition, binding post also easily contacts with the circuit board, the condition that the short circuit burns out appears, and make the volume of wire holder great, the structure is more complicated, the installation is comparatively loaded down with trivial details.

Disclosure of Invention

Aiming at the defects and shortcomings of the prior art, the utility model provides an improved junction box which is simple and reasonable in structure, convenient to operate, and high in safety, optimizes the structure of a wiring seat, and enables the wiring board to be difficult to be in unexpected contact with the wiring seat through connection of a plug-in end and the wiring board.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model relates to an improved junction box which comprises a junction box body, a circuit board, binding posts and a junction seat, wherein the circuit board, the binding posts and the junction seat are all arranged in the junction box body, three binding posts are arranged at the upper ends of the circuit board and are respectively connected with a zero line, a fire wire and a ground wire, the lower ends of the circuit board are in plug-in fit with the junction seat, a plug-in groove is formed in the junction seat, a plug-in end is connected in the plug-in groove, a U-shaped part is arranged at the lower end of the plug-in end and is plugged into the plug-in groove, a saw tooth part is arranged at the middle end of the plug-in end and is clamped with the plug-in groove, and the upper ends of the plug-in ends extend out of the plug-in groove and are plugged with the circuit board.

Further, the number of the inserting ends is three, and the three inserting ends are matched to form a triangular structure.

Further, the inside threaded connection of terminal has the binding screw.

Further, a connecting hole is formed in the junction box body, and a fixing screw is connected to the connecting hole in a threaded mode.

Further, the wire holder is provided with a connecting seat, the fixing screw is in threaded connection with the inside of the connecting seat, and the circuit board is provided with a through hole for the connecting seat to pass through.

Further, the wire outlet end of the junction box body is provided with a joint part and a rotary nut, an external thread is arranged on the outer circumference of the joint part, an internal thread is arranged on the inner circumference of the rotary nut, and the internal thread is matched with the external thread.

Further, the free end of joint portion is provided with the constriction portion, the constriction portion is provided with a plurality of shrinkage joints that follow circumferencial direction evenly distributed, and the axial extension of shrinkage portion is followed to the shrinkage joint, and the rotatory nut cover is located the constriction portion outside to the cooperation is screwed in on the joint portion of terminal box body.

Further, a bevel part is arranged on the inner wall of the rotary nut, and the bevel part is abutted with the end part of the contraction part.

Further, a rubber ring is abutted between the joint part and the rotary nut, and the rubber ring is sleeved in the contraction part.

Further, the junction box body, the rubber ring and the rotary screw cap are all provided with through holes for the cables to pass through.

The beneficial effects of the utility model are as follows: according to the improved junction box, when the wiring terminals are assembled, the wiring terminals are inserted into the upper end of the circuit board one by one, preferably, the wiring screws are connected to the internal threads of the wiring terminals, the wiring terminals are respectively connected with the zero line, the live line and the ground line and are fixed through the wiring screws, the ground line is connected to the circuit board, and the wiring base does not need to be additionally provided with the wiring terminals connected with the ground line, so that the structure of the wiring base is simplified, the volume is reduced, and the assembly is easier.

The circuit board is connected with the wire holder through the grafting end, and the lower extreme of grafting end is provided with U type portion and peg graft in the grafting inslot more easily, and the middle-end of grafting end is provided with the sawtooth portion and can avoid the grafting end not by expected and break away from with the grafting groove effectively, and the upper end of grafting end stretches out in grafting groove and circuit board grafting, reduces the volume of circuit board and wire holder contact, can avoid wire holder and circuit board on components and parts or stabilizer blade to take place unexpected contact, causes the condition that the short circuit burns out effectively, and the security is high.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of the present utility model in an exploded state;

FIG. 3 is a schematic cross-sectional view of the present utility model at a first viewing angle;

fig. 4 is a schematic cross-sectional view of the present utility model at a second viewing angle.

In fig. 1-4: 1. a junction box body; 2. a circuit board; 3. binding posts; 4. a wire holder; 5. a plug end; 6. a plug-in groove; 7. a serration part; 8. a binding screw; 9. a connection hole; 10. a connecting seat; 11. a through hole; 12. a joint part; 13. rotating the nut; 14. an external thread; 15. an internal thread; 16. a constriction; 17. a shrinkage joint; 18. a bevel portion; 19. a U-shaped part; 20. perforating; 21. a rubber ring.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The improved junction box comprises a junction box body 1, a circuit board 2, a binding post 3 and a junction seat 4, wherein the circuit board 2, the binding post 3 and the junction seat 4 are all installed in the junction box body 1, the binding post 3 is arranged at the upper end of the circuit board 2 and is connected with a zero line, a live line and a ground line respectively, the lower end of the circuit board 2 is in plug-in fit with the junction seat 4, a plug-in groove 6 is formed in the junction seat 4, a plug-in end 5 is connected in the plug-in groove 6, a U-shaped part 19 is arranged at the lower end of the plug-in end 5 and is plugged in the plug-in groove 6, a saw tooth part 7 is arranged at the middle end of the plug-in end 5 and is clamped with the plug-in groove 6, and the upper end of the plug-in end 5 extends out of the plug-in groove 6 and is plugged in with the circuit board 2.

Specifically speaking, when the wiring terminal 3 is assembled, the wiring terminal 3 is inserted into the upper ends of the circuit boards 2 one by one, preferably, in the embodiment, the wiring terminal 3 is internally connected with the wiring screw 8 in a threaded manner, the wiring terminal 3 is respectively connected with a zero line, a live line and a ground line and is fixed through the wiring screw 8, the ground line is connected to the circuit boards 2, the wiring seat 4 does not need to be additionally provided with a wiring terminal connected with the ground line, the structure of the wiring seat 4 is simplified, the volume is reduced, and the assembly is easier.

The circuit board 2 is connected with the wiring seat 4 through the plug end 5, the lower extreme of the plug end 5 is provided with the U-shaped part 19 and plugs into the plug groove 6 more easily, the middle end of the plug end 5 is provided with the sawtooth part 7, the unexpected separation of the plug end 5 from the plug groove 6 can be effectively avoided, the upper end of the plug end 5 stretches out in the plug groove 6 and plugs into the circuit board 2, the contact volume of the circuit board 2 and the wiring seat 4 is reduced, the unexpected contact of components and parts or supporting legs on the wiring seat 4 and the circuit board 2 can be effectively avoided, the condition of short circuit burnout is caused, and the safety is high.

Preferably, in this embodiment, there are three plugging ends 5 and the three plugging ends 5 cooperate to form a triangle structure, and the triangle has stability.

Preferably, in this embodiment, the junction box body 1 is provided with a connection hole 9, and a fixing screw is screwed in the connection hole 9.

Preferably, in this embodiment, the connection base 4 is provided with a connection base 10, a fixing screw is screwed inside the connection base 10, and the circuit board 2 is provided with a through hole 11 through which the connection base 10 passes. The junction box body 1, the junction seat 4 and the circuit board 2 are connected through fixing screws.

Preferably, in this embodiment, the wire outlet end of the junction box body 1 is provided with a joint portion 12 and a rotary nut 13, an external thread 14 is provided on the outer circumference of the joint portion 12, an internal thread 15 is provided on the inner circumference of the rotary nut 13, the internal thread 15 is matched with the external thread 14, so that the rotary nut 13 is in threaded connection with the joint portion 12 of the junction box body 1 conveniently, and the installation and the disassembly are very convenient.

Preferably, in this embodiment, the free end of the connector portion 12 is provided with a shrinkage portion 16, the shrinkage portion 16 is provided with a plurality of shrinkage joints 17 uniformly distributed along the circumferential direction, and the shrinkage joints 17 extend along the axial direction of the shrinkage portion 16, and the rotary nut 13 is sleeved outside the shrinkage portion 16 and is screwed on the connector portion 12 of the junction box body 1 in a matching manner. Specifically, the shrinkage joints 17 on the shrinkage part 16 are inclined in the same clockwise direction. By adopting such a structural arrangement, the inner wall of the contraction part 16 is provided with the curved surface which can be attached to the rubber ring 21, when the rubber ring 21 is radially extruded, the contact property of the two is better, and the rubber ring 21 is not easy to damage, so that the service life is prolonged.

Preferably, in this embodiment, a bevel portion 18 is provided on the inner wall of the rotary nut 13, and the bevel portion 18 abuts against an end portion of the shrinkage portion 16. With such a structural arrangement, the shrinkage portion 16 is pushed to shrink in the radial direction by the inclined surface portion 18 during the screwing of the screw cap 13 to the joint portion 12, thereby achieving the effect of compressing the rubber ring 21.

Preferably, in this embodiment, a rubber ring 21 is abutted between the joint portion 12 and the rotation nut 13, and the rubber ring 21 is sleeved in the contraction portion 16. When the cable sealing device is used, the rubber ring 21 is sleeved in the contraction part 16, the rotary nut 13 is sleeved outside the contraction part 16 and is screwed on the joint part 12 of the junction box body 1 in a matched mode, and the contraction part 16 can be pushed to contract in the radial direction during screwing of the rotary nut 13, so that the rubber ring 21 in the contraction part 16 is compressed, the rubber ring 21 tightly holds a cable, and the sealing waterproof effect of the cable can be effectively improved; because the rubber ring 21 is tightly held on the cable, the cable is not easy to fall off from the junction box body 1, and the connection stability is improved.

Preferably, in this embodiment, the terminal box body 1, the rubber ring 21 and the rotary nut 13 are all provided with perforations 20 for the cable to pass through, and by adopting such a structural arrangement, the cable is conveniently routed.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims

1. The utility model provides an improved junction box, includes terminal box body (1), circuit board (2), terminal (3) and connection terminal (4) are all installed in terminal box body (1), its characterized in that: the wiring terminal (3) is three and is installed in the upper end of circuit board (2) and is connected with zero line, live wire and ground wire respectively, the lower extreme and the connection terminal (4) of circuit board (2) are pegged graft the cooperation, be provided with grafting groove (6) on connection terminal (4), be connected with grafting end (5) in grafting groove (6), the lower extreme of grafting end (5) is provided with U type portion (19) and inserts to grafting inslot (6), and the middle-end of grafting end (5) is provided with sawtooth portion (7) and grafting groove (6) joint, and the upper end of grafting end (5) stretches out in grafting groove (6) and circuit board (2) grafting.

2. An improved junction box as claimed in claim 1, wherein: the number of the inserting ends (5) is three, and the three inserting ends (5) are matched to form a triangular structure.

3. An improved junction box as claimed in claim 1, wherein: the wiring screw (8) is connected with the internal thread of the wiring post (3).

4. An improved junction box as claimed in claim 1, wherein: the junction box is characterized in that a connecting hole (9) is formed in the junction box body (1), and a fixing screw is connected with the connecting hole (9) in a threaded mode.

5. An improved junction box as claimed in claim 4, wherein: the wiring seat (4) is provided with a connecting seat (10), a fixing screw is connected inside the connecting seat (10) in a threaded mode, and the circuit board (2) is provided with a through hole (11) through which the connecting seat (10) passes.

6. An improved junction box as claimed in claim 1, wherein: the junction box comprises a junction box body (1), and is characterized in that a wire outlet end of the junction box body (1) is provided with a joint part (12) and a rotary screw cap (13), an external thread (14) is arranged on the outer circumference of the joint part (12), an internal thread (15) is arranged on the inner circumference of the rotary screw cap (13), and the internal thread (15) is matched with the external thread (14).

7. An improved junction box as set forth in claim 6, wherein: the free end of joint portion (12) is provided with constriction portion (16), constriction portion (16) are provided with a plurality of shrinkage joints (17) of evenly distributed along the circumferencial direction, and the axial extension of constriction portion (16) is followed in shrinkage joint (17), and rotatory nut (13) cover is located constriction portion (16) outside to the cooperation is screwed in on joint portion (12) of terminal box body (1).

8. An improved junction box as set forth in claim 6, wherein: a bevel part (18) is arranged on the inner wall of the rotary nut (13), and the bevel part (18) is abutted with the end part of the contraction part (16).

9. An improved junction box as set forth in claim 6, wherein: a rubber ring (21) is abutted between the joint part (12) and the rotary nut (13), and the rubber ring (21) is sleeved in the contraction part (16).

10. An improved junction box according to claim 9, wherein: the junction box body (1), the rubber ring (21) and the rotary screw cap (13) are all provided with perforations (20) for the cables to pass through.