Junction box body

Abstract

A wiring box is used for being connected with an external cable and comprises a box body which is defined by a back plate, an upper plate and two side plates and provided with a front mounting hole and a lower mounting hole, the front mounting hole is communicated with the lower mounting hole, a wiring terminal is arranged in the box body, a door plate movably connected with one side plate is arranged at the position of the front mounting hole of the box body, and the door plate is connected with the other side plate. A detachable bottom plate is arranged at the position of the lower mounting hole of the box body, and the bottom plate is provided with a threading hole for an external cable to pass through. When the external cable is installed and drawn out of the wiring box body, the wiring box body is not limited by the installation height of the wiring box body, the operation is very convenient, the efficiency is very high, and when the external cable is drawn out, the external cable cannot be damaged due to rubbing with the threading hole.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a wiring box and an inverter having the same. Background Art

[0002] Existing large electrical equipment such as inverters are usually equipped with a special wiring box on the side of the equipment for connecting external cables. The wiring box of the prior art includes a box with a bottom plate, a wiring terminal arranged in the box, and a threading hole arranged in the bottom plate of the box. The external cable is inserted into the box through the threading hole and connected to the wiring terminal in the box. When the equipment fails and the cable needs to be removed for maintenance, the cable needs to be removed from the wiring terminal and pulled out from the threading hole outside the box. Since the threading hole is arranged on the bottom plate of the box and the bottom plate of the box is fixed on the wiring box, when pulling out the cable, it can only be pulled out from the threading hole fixed on the bottom plate, which is very inconvenient. When the wiring box is usually installed at a low position, the distance from the threading hole to the ground is short. Because the cable is usually large in diameter and the cable itself is high in strength and difficult to bend, it is very difficult to pull the cable out from the bottom of the box through the fixed threading hole.

[0003] Therefore, there is an urgent need to develop a junction box with a simple structure and convenient cable extraction. Utility Model Content

[0004] The purpose of the utility model is to avoid the shortcomings of the prior art and provide a wiring box with a simple structure and convenient cable extraction, aiming to solve one of the above technical problems.

[0005] A wiring box for connecting external cables comprises: a box body having a front mounting hole and a lower mounting hole surrounded by a back plate, an upper plate and two side plates, the front mounting hole and the lower mounting hole being communicated with each other, a wiring terminal being arranged in the box body, a door plate movably connected to one of the side plates being arranged at the position of the front mounting hole of the box body, a detachable bottom plate being arranged at the position of the lower mounting hole of the box body, and the bottom plate being provided with threading holes for the external cables to pass through.

[0006] Preferably, mounting plates parallel to the upper plate are respectively arranged on both sides of the lower mounting hole, the two mounting plates are respectively fixedly connected to the adjacent side plates, and the bottom plate is detachably fixed to the outer sides of the two mounting plates.

[0007] Preferably, the two mounting plates are respectively provided with a first threaded hole, a second threaded hole is provided at a position corresponding to the first threaded hole of the base plate, and the junction box is further provided with a first screw, which is screwed into the second threaded hole and the first threaded hole in sequence.

[0008] Preferably, the above-mentioned wiring box is also provided with a soft rubber threading plate, the threading holes are arranged on the threading plate, the bottom plate is provided with fixing holes corresponding to the threading plate, the four corners of the threading plate are provided with third threaded holes, and the fourth threaded holes are arranged at the corresponding positions of the third threaded holes of the bottom plate. The wiring box is also provided with a second screw, the threading plate is attached to the fixing hole position of the bottom plate from the outside, and the second screw is screwed into the third threaded hole and the fourth threaded hole in sequence.

[0009] Preferably, a mounting strip connected to the back plate is provided between the two mounting plates of the above-mentioned lower mounting hole, the bottom plate is detachably fixed to the mounting strip and the outer sides of the two mounting plates, the junction box is also provided with a "ㄩ"-shaped sealing strip, and the mounting strip of the bottom plate and the corresponding positions of the two mounting plates are provided with "ㄩ"-shaped grooves that fit into the sealing strip, and the "ㄩ"-shaped sealing strip is clamped in the "ㄩ"-shaped groove and clamped on the mounting strip and the outer sides of the two mounting plates.

[0010] Preferably, the door panel is hingedly connected to one of the side panels.

[0011] Preferably, an internal threaded column is provided on the inner side of the other side panel, a fifth threaded hole is provided at the position of the internal threaded column of the door panel, and the junction box is also provided with a third screw, which is screwed into the fifth threaded hole and the internal threaded column in sequence.

[0012] Preferably, the front ends of the upper plate, the two side plates and the bottom plate are respectively provided with flange plates parallel to the door plate, and the inner sides of the peripheries of the door plates are respectively provided with enclosure plates fixed vertically to the door plates, and the enclosure plates just wrap the flange plates on their inner sides.

[0013] Preferably, a sealing ring is fixed on the inner side of the enclosure, and the sealing ring is clamped on the flange plate.

[0014] Preferably, the threading plate is a silicone threading plate or a rubber threading plate.

[0015] Compared with the prior art, the utility model has the following advantages: a wiring box of the utility model, the front mounting hole and the lower mounting hole are connected, the door panel is movably connected to one of the side panels, and a detachable bottom plate is arranged at the position of the lower mounting hole of the box body, and the structure is simple. When installing external cables, the external cables can be firstly passed through the bottom plate threading hole into the box body, and then the external cables are connected to the wiring terminals through the front mounting hole, and finally the door panel is covered, and the bottom plate is installed on the lower mounting hole of the box body, so as to ensure that the wiring box has a sealed space, dustproof and waterproof. When the equipment fails and the external cables need to be removed for maintenance, because the door panel is movably connected to one of the side panels, the door panel can be opened first, the detachable bottom plate can be removed, and then the external cables can be removed from the wiring terminals at the front mounting hole, and the external cables can be conveniently pulled out from the lower mounting hole. When installing and pulling out the external cables of the wiring box of the utility model, the wiring box is not limited by the installation height of the wiring box, the operation is very convenient, the efficiency is very high, and when the external cables are pulled out, the external cables will not be damaged due to scratches with the threading holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described with the aid of the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model.

[0017] Figure 1 It is a structural schematic diagram of a wiring box of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a wiring box of the utility model;

[0019] Figure 3 This is a schematic diagram of the exploded structure of a wiring box of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the exploded structure of a junction box. DETAILED DESCRIPTION

[0021] The utility model is further described with reference to the following embodiments and drawings:

[0022] A junction box, such as Figures 1 to 4 As shown, it is used to connect external cables (not shown in the figure), including: a box body 15 with a front mounting hole 13 and a lower mounting hole 14 surrounded by a back plate 10, an upper plate 11 and two side plates 12, the front mounting hole 13 and the lower mounting hole 14 are connected, a wiring terminal 16 is arranged in the box body 15, a door plate 17 movably connected to one of the side plates 12 is arranged at the position of the front mounting hole 13 of the box body 15, a detachable bottom plate 18 is arranged at the position of the lower mounting hole 14 of the box body 15, and the bottom plate 18 is provided with a threading hole 19 for the external cable (not shown in the figure) to pass through.

[0023] The utility model provides a wiring box, wherein the front mounting hole 13 and the lower mounting hole 14 are connected, the door plate 17 is movably connected to one of the side plates 12, and a detachable bottom plate 18 is provided at the position of the lower mounting hole 14 of the box body 15, and the structure is simple. When installing an external cable (not shown in the figure), the external cable (not shown in the figure) can be firstly passed through the threading hole 19 of the bottom plate 18 into the box body 15, and then the external cable (not shown in the figure) is connected to the wiring terminal 16 through the front mounting hole 13, and finally the door plate 17 is covered, and the bottom plate 18 is installed on the lower mounting hole 14 of the box body 15, so as to ensure that the wiring box has a sealed space and is dustproof and waterproof. When the equipment fails and the external cable (not shown) needs to be removed for maintenance, since the door panel 17 is movably connected to one of the side panels 12, the door panel 17 can be opened first, the detachable bottom panel 18 can be removed, and then the external cable (not shown) can be removed from the wiring terminal 16 at the front mounting hole 13. At this time, the external cable (not shown) can be easily pulled out from the lower mounting hole. When installing and pulling out the external cable (not shown) in a wiring box of the utility model, it is not limited by the installation height of the wiring box, the operation is very convenient, the efficiency is very high, and when pulling out the external cable (not shown), the external cable (not shown) will not be damaged due to scratching with the threading hole 19.

[0024] Preferably, if Figure 1 and Figure 3 As shown, mounting plates 20 parallel to the upper plate 11 are respectively provided on both sides of the lower mounting hole 14, and the two mounting plates 20 are respectively fixedly connected to the adjacent side plates 12, and the bottom plate 18 is detachably fixed to the outside of the two mounting plates 20. The bottom plate 18 is detachably fixed to the outside of the two mounting plates 20, and the installation and removal of the bottom plate 18 are convenient, and the bottom plate 18 is more firm and reliable after being fixed. Specifically, the bottom plate 18 can be fixed to the outside of the two mounting plates 20 by a mounting structure of the prior art such as a screw structure or a buckle.

[0025] Preferably, if Figures 1 to 3 As shown, the two mounting plates 20 are respectively provided with first threaded holes 21, and the second threaded holes 22 are provided at the corresponding positions of the first threaded holes 21 of the bottom plate 18. The junction box is also provided with first screws 23, and the first screws 23 are screwed into the second threaded holes 22 and the first threaded holes 21 in sequence. The bottom plate 18 can be fixed to the outside of the two mounting plates 20 by the mounting structure in which the first screws 23 are screwed into the second threaded holes 22 and the first threaded holes 21 in sequence. The installation and disassembly operations are convenient, and the structure of the bottom plate 18 fixed to the outside of the two mounting plates 20 is firm and reliable, and has a good dustproof and waterproof effect.

[0026] Preferably, if Figures 1 to 4As shown, the wiring box is also provided with a soft rubber threading plate 24, the threading holes 19 are arranged on the threading plate 24, the bottom plate 18 is provided with fixing holes 25 corresponding to the threading plate 24, the four corners of the threading plate 24 are provided with third threaded holes 26, and the third threaded holes 26 of the bottom plate 18 are provided at positions corresponding to the third threaded holes 26. The wiring box is also provided with a second screw 28, the threading plate 24 is attached to the fixing hole 25 of the bottom plate 18 from the outside, and the second screw 28 is screwed into the third threaded hole 26 and the fourth threaded hole 27 in sequence.

[0027] Specifically, the threading plate 24 can be a silicone threading plate 24 or a rubber threading plate 24. The cost of silicone and rubber is low and the elastic effect is good. Of course, the threading plate 24 can also use other soft rubber materials in the prior art.

[0028] The threading holes 19 are arranged on the soft rubber threading plate 24. Since the soft rubber threading plate 24 is elastic, the sealing performance is better when the tail cable is threaded, it is not easy to leak, and it can play a good dustproof effect. The threading plate 24 is fixed to the bottom plate 18 by the structure of the second screw 28 being screwed into the third threaded hole 26 and the fourth threaded hole 27 in sequence, and the installation and disassembly are very convenient. The threading plate 24 with threading holes 19 of different specifications can be set according to the outer diameter of the external cable (not marked in the figure). When installing the wiring box, it is only necessary to select the threading plate 24 with threading holes 19 of different specifications according to the different outer diameters of the external cable (not marked in the figure). There is no need to replace the entire wiring box, which improves the versatility of the wiring box and is conducive to the matching of parts. Of course, it is also possible to set multiple specifications of threading holes 19 on a threading plate 24 as needed. Since the threading holes 19 of the soft rubber threading plate 24 also have a certain elasticity, the threading holes 19 can be stretched open when external cables (not shown in the figure) are passed through. Therefore, the threading holes 19 can be set relatively small, which is beneficial to improving the overall sealing of the wiring box.

[0029] Preferably, if Figure 1 and Figure 3 As shown, a mounting strip 29 connected to the back plate 10 is provided between the two mounting plates 20 of the lower mounting hole 14, the bottom plate 18 is detachably fixed on the outside of the mounting strip 29 and the two mounting plates 20, and the junction box is also provided with a "ㄩ"-shaped sealing strip 30, and a "ㄩ"-shaped groove 31 for fitting into the sealing strip 30 is provided at the corresponding positions of the mounting strip 29 of the bottom plate 18 and the two mounting plates 20, and the "ㄩ"-shaped sealing strip 30 is stuck in the "ㄩ"-shaped groove 31 and stuck on the outside of the mounting strip 29 and the two mounting plates 20. The "ㄩ"-shaped sealing strip 30 is stuck in the "ㄩ"-shaped groove 31 and stuck on the outside of the mounting strip 29 and the two mounting plates 20. Because the "ㄩ"-shaped sealing strip 30 has a certain elastic effect, the bottom plate 18 has a better sealing effect when it is detachably fixed on the outside of the mounting strip 29 and the two mounting plates 20, and can play a better dustproof and waterproof effect, further improving the protection level of the junction box.

[0030] Preferably, if Figures 1 to 4 As shown, the door panel 17 is connected to one of the side panels 12 by a hinge 37 . The connection method is simple and reliable, and it is very convenient to open and close the door panel 17 .

[0031] Preferably, if Figure 1 and Figure 2 As shown, an internal thread column 32 is provided on the inner side of the other side plate 12, a fifth threaded hole 33 is provided at the position of the internal thread column 32 of the door plate 17, and a third screw (not marked in the figure) is further provided on the junction box body, and the third screw (not marked in the figure) is screwed into the fifth threaded hole 33 and the internal thread column 32 in sequence. The door plate 17 is fixed to the other side plate 12 by the structure that the third screw (not marked in the figure) is screwed into the fifth threaded hole 33 and the internal thread column 32 in sequence, and the structure is simple and reliable, can better protect the box body 15, and is easy to install and disassemble.

[0032] Preferably, if Figures 1 to 4 As shown, the front ends of the upper plate 11, the two side plates 12 and the bottom plate 18 are respectively provided with flanged plates 34 parallel to the door plate 17, and the inner sides of the periphery of the door plate 17 are respectively provided with enclosures 35 vertically fixed to the door plate 17, and the enclosures 35 just wrap the flanged plates 34 inside thereof. The enclosures 35 just wrap the flanged plates 34 inside thereof, and the sealing is better, which can improve the waterproof and dustproof protection effects of the junction box.

[0033] Preferably, a sealing ring 36 is fixed inside the enclosure 35, and the sealing ring 36 is clamped on the flange plate 34. Since the sealing ring 36 has a certain elasticity, the sealing ring 36 is clamped on the flange plate 34, which can improve the sealing effect of the installation of the door plate 17 and the bottom plate 18, and greatly improve the protection level of the junction box.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A junction box for connecting external cables, characterized in that: include: A box body with a front mounting hole and a lower mounting hole is formed by a back plate, an upper plate and two side plates, the front mounting hole and the lower mounting hole are connected, a wiring terminal is arranged in the box body, a door panel movably connected to one of the side panels is arranged at the position of the front mounting hole of the box body, a detachable bottom plate is arranged at the position of the lower mounting hole of the box body, and the bottom plate is provided with a threading hole for the external cable to pass through.

2. A junction box according to claim 1, characterized in that: Mounting plates parallel to the upper plate are respectively arranged on both sides of the lower mounting hole, the two mounting plates are respectively fixedly connected to the adjacent side plates, and the bottom plate is detachably fixed on the outer sides of the two mounting plates.

3. A junction box according to claim 2, characterized in that: The two mounting plates are respectively provided with a first threaded hole, a second threaded hole is provided at a position corresponding to the first threaded hole of the bottom plate, and the junction box is further provided with a first screw, which is screwed into the second threaded hole and the first threaded hole in sequence.

4. A junction box according to claim 3, characterized in that: The junction box is also provided with a soft rubber threading plate, the threading holes are arranged on the threading plate, the bottom plate is provided with fixing holes corresponding to the threading plate, the four corners of the threading plate are provided with third threaded holes, and the bottom plate is provided with fourth threaded holes at positions corresponding to the third threaded holes. The junction box is also provided with a second screw, the threading plate is attached to the fixing hole position of the bottom plate from the outside, and the second screw is screwed into the third threaded hole and the fourth threaded hole in sequence.

5. A junction box according to claim 4, characterized in that: A mounting strip connected to the back plate is arranged between the two mounting plates of the lower mounting hole, the bottom plate is detachably fixed to the mounting strip and the outer sides of the two mounting plates, the junction box is also provided with a "ㄩ"-shaped sealing strip, and "ㄩ"-shaped grooves for fitting into the sealing strip are arranged at corresponding positions of the mounting strip of the bottom plate and the two mounting plates, the "ㄩ"-shaped sealing strip is clamped in the "ㄩ"-shaped groove and clamped on the mounting strip and the outer sides of the two mounting plates.

6. A junction box according to claim 5, characterized in that: The door panel is hingedly connected to one of the side panels.

7. A junction box according to claim 6, characterized in that: An internal thread column is arranged on the inner side of the other side panel, a fifth threaded hole is arranged at the position of the internal thread column of the door panel, and a third screw is also arranged on the junction box body, and the third screw is screwed into the fifth threaded hole and the internal thread column in sequence.

8. A junction box according to claim 7, characterized in that: The front ends of the upper plate, the two side plates and the bottom plate are respectively provided with flange plates parallel to the door plate, and the inner sides of the peripheries of the door plates are respectively provided with enclosure plates fixed vertically to the door plates, and the enclosure plates just wrap the flange plates on their inner sides.

9. A junction box according to claim 8, characterized in that: A sealing ring is fixed on the inner side of the enclosure plate, and the sealing ring is clamped on the flange plate.

10. A junction box according to claim 9, characterized in that: The threading plate is a silicone threading plate or a rubber threading plate.

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