CN214590386U

CN214590386U - Junction box and inverter

Info

Publication number: CN214590386U
Application number: CN202120469210.0U
Authority: CN
Inventors: 蔡曲娥; 刘龙; 李永红
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-11-02
Anticipated expiration: 2031-03-04

Abstract

The utility model relates to an electronic power source technical field especially relates to a terminal box and dc-to-ac converter. This terminal box includes box body and shrouding subassembly, and the box body is provided with the breach including dismantling the box body and the apron of connection on the lateral wall of box body, and it is originally internal that the box is put into through the breach to the cable, and the shrouding subassembly sets up in breach department, and the shrouding subassembly can be dismantled and fix on the box body, and the cable can pass the shrouding subassembly. When inserting the terminal box with the cable, only need dismantle the shrouding subassembly from the box body earlier, embolia the cable on the shrouding subassembly, then directly place the cable in the terminal box through the breach on the box body, seal the sealed breach of shrouding subassembly and install on the box body at last, when guaranteeing terminal box protection level, whole installation need not crooked cable, can accomplish alone, save the labour, also make the installation more convenient laborsaving. This inverter is through setting up above-mentioned terminal box on the inverter body for the cable installation is convenient laborsaving.

Description

Junction box and inverter

Technical Field

The utility model relates to an electronic power source technical field especially relates to a terminal box and dc-to-ac converter.

Background

When the existing inverter is connected with an external device through a cable, in order to increase the protection of the cable and facilitate the connection of the cable, a junction box is required to be installed on one side of the inverter. When the cable is connected into the junction box, in order to guarantee the protection grade of the junction box, only the wiring port is formed in the junction box, an operator needs to penetrate the cable into the junction box through the wiring port in the junction box, and the operator needs to bend the cable properly so as to send the cable into the junction box through the wiring port. However, along with the development of technology, the power level of group's string dc-to-ac converter is bigger and bigger in the market, and the interchange side cable that corresponds also can be more and more thick, and when the cable penetrated inside the terminal box, because the cable was difficult to be crooked, need 2 ~ 3 individuals to operate together just can penetrate the cable in the terminal box, not only wasted time and energy, also increased intensity of labour.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a terminal box when guaranteeing the protection grade of terminal box for the labour is saved in the cable erection, also convenient labour saving more.

Another object of the utility model is to provide an inverter, through using above-mentioned terminal box, when guaranteeing the protection level of terminal box for the labour is saved in cable erection, also convenient labour saving more.

To achieve the purpose, the utility model adopts the following technical proposal:

a junction box, comprising:

the box body comprises a box body and a cover plate which are detachably connected, a gap is formed in the side wall of the box body, and a cable is placed into the box body through the gap; and

the closing plate assembly is arranged at the notch and detachably fixed on the box body, and the cable can penetrate through the closing plate assembly.

Preferably, the sealing plate assembly comprises:

the sealing plate is detachably fixed on the box body; and

the sealing interface is connected on the sealing plate, a threading opening is formed in the sealing interface, the cable can pass through the threading opening to penetrate through the sealing plate assembly, and the cable is tightly attached to the inner wall of the threading opening.

Preferably, the sealing interface is a waterproof terminal, the sealing plate is provided with a mounting hole, the waterproof terminal is screwed in the mounting hole, and the waterproof terminal is provided with the threading opening.

Preferably, the sealing interface is a conical sealing element, the conical sealing element and the sealing plate are integrally formed, and the threading opening is formed in the conical sealing element.

Preferably, the sealing plate includes a sealing plate body and a connecting portion, the sealing interface is disposed on the sealing plate body, and the connecting portion extends from the sealing plate body to the inside of the box body;

the box body is provided with the breach on the lateral wall of main part including main part and the installation department that is connected, connecting portion can dismantle to be fixed on the installation department.

Preferably, the cartridge body further includes:

the periphery of the sealing plate body is connected with the limiting plates, the two limiting plates are arranged in parallel in the thickness direction of the sealing plate body at intervals, the main body portion is provided with a groove in the side wall of the notch, the limiting plates are inserted in the groove, and the outer walls of the two limiting plates are respectively attached to the two inner walls of the groove.

Preferably, the sealing plate assembly further comprises:

and the two sealing plate sealing elements form fixing grooves, are arranged in the fixing grooves and can be attached to the bottom plates of the grooves.

Preferably, the sealing element of the sealing plate is fixed in the fixing groove in a dispensing manner or a back adhesive bonding manner.

Preferably, the box further comprises:

a cover seal disposed between the cartridge body and the cover.

An inverter includes an inverter body, and the inverter further includes the junction box as described above, the junction box being provided on the inverter body.

The utility model has the advantages that:

the utility model provides a junction box, through designing into the detachable mode with the junction box, with shrouding subassembly demountable installation on the box body, make when inserting the cable in the junction box, only need to dismantle shrouding subassembly from the box body earlier, embolia the cable on the shrouding subassembly, then directly place the breach on the box body with the cable inside the junction box, at last with the sealed breach of shrouding subassembly and install on the box body, when guaranteeing the protection grade of junction box, because the cable is directly placed in the junction box through breach department, need not to penetrate inside the junction box through the through wires hole, make the whole installation process of cable need not crooked cable, just can accomplish the installation of cable alone, save the labour, also make the installation more convenient laborsaving.

The utility model provides an inverter, through using above-mentioned terminal box, when guaranteeing terminal box protection level for the whole installation of cable need not crooked cable, just can accomplish the installation of cable alone, saves the labour, makes the installation more convenient laborsaving.

Drawings

Fig. 1 is a schematic structural diagram of an inverter according to an embodiment of the present invention;

fig. 2 is an exploded view of a junction box in an embodiment of the invention;

figure 3 is a schematic structural view of a closure plate assembly according to an embodiment of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 2.

In the figure:

100. a junction box; 200. an inverter body;

1. a box body; 11. a cartridge body; 111. a main body portion; 1111. a notch; 1112. a groove; 112. an installation part; 12. a cover plate; 13. a cover plate seal;

2. a seal plate assembly; 21. closing the plate; 211. a seal plate body; 2111. mounting holes; 212. a connecting portion; 213. a limiting plate; 2131. fixing grooves; 22. sealing the interface; 221. a threading opening.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment provides an inverter, which includes an inverter body 200 and a junction box 100, wherein the inverter body 200 is used for converting direct current power into alternating current power, the junction box 100 is mainly an alternating current junction box, and the junction box 100 is disposed on the inverter body 200 and is used for electrically connecting cables on the alternating current side of the inverter body 200 with external devices, so as to protect the cables to a certain extent.

However, in the conventional terminal box 100, only a connection port is formed in the terminal box 100 to ensure the protection level of the terminal box 100, and an operator needs to pass a cable into the terminal box 100 through the connection port formed in the terminal box 100, which requires the operator to bend the cable appropriately to feed the cable into the terminal box 100 through the connection port. However, along with the development of the technology, the power level of the group string inverter on the market is larger and larger, the corresponding alternating current side cable is thicker and thicker, when the cable penetrates into the junction box 100, the cable is difficult to bend, 2-3 persons are required to operate together to penetrate the cable into the junction box 100, time and labor are wasted, and the labor intensity is increased.

In order to solve the above problem, as shown in fig. 2, the terminal box 100 provided by this embodiment includes a box body 1 and a sealing plate assembly 2, wherein the cable is connected inside the box body 1, the box body 1 plays a role in protecting the cable, the box body 1 includes a box body 11 and a cover plate 12 which are detachably connected, a notch 1111 is provided on a side wall of the box body 11, the cable is put into the box body 11 through the notch 1111, the sealing plate assembly 2 is disposed at the notch 1111, the sealing plate assembly 2 is detachably fixed on the box body 11, and the cable can pass through the sealing plate assembly 2. When needs insert the cable in terminal box 100, only need earlier to dismantle shrouding assembly 2 from box body 11, embolia the cable on shrouding assembly 2, then directly place the cable in terminal box 100 through breach 1111 on the box body 11 inside, at last with shrouding assembly 2 sealed good breach 1111 and install on box body 11, make shrouding assembly 2 play certain sealed effect to box body 11, when guaranteeing terminal box 100's protection grade, because the cable is directly placed in terminal box 100 through breach 1111 department, need not to penetrate inside terminal box 100 through the through wires hole, make the whole installation of cable need not crooked cable, just can accomplish the installation of cable alone, save labour, also make the installation more convenient laborsaving.

The utility model provides an inverter, through using above-mentioned terminal box 100, when guaranteeing terminal box 100 protection level for the whole installation of cable need not crooked cable, just can accomplish the installation of cable alone, saves the labour, makes the installation more convenient laborsaving.

Particularly, as shown in fig. 2, one side of the cover plate 12 is hinged on the box body 11, the other side of the cover plate 12 is detachably mounted on the box body 11 through a fastener, when an operator needs to perform wiring installation or maintenance on a cable inside the box body 11, the fastener only needs to be detached, then the cover plate 12 is turned over on one side of the cover plate 12, the cover plate 12 can be opened, the operation is convenient, and the connection strength of the cover plate 12 can be ensured.

Preferably, as shown in fig. 2, the box body 1 further includes a cover seal 13, and the cover seal 13 is disposed between the box body 11 and the cover 12, so as to enhance the sealing effect between the box body 11 and the cover 12 and enhance the protection effect on the cable inside the box body 11. Particularly, the mounting groove has been seted up on apron 12, and apron sealing member 13 is placed in the mounting groove, can avoid apron sealing member 13 to drop from apron 12. It should be noted that, apron sealing member 13 can be joint strip to apron sealing member 13 is interference fit with the mounting groove, because joint strip possesses certain elasticity, is convenient for stabilize the joint inside the mounting groove. In other embodiments, the lid seal 13 may also be placed on the cartridge body 11.

Now explain shrouding assembly 2's concrete structure with reference to fig. 2-3, as shown in fig. 2-3, shrouding assembly 2 includes shrouding 21 and sealing interface 22, shrouding 21 can be dismantled and fix on box body 11, sealing interface 22 connects on shrouding 21, be provided with through wires mouth 221 on the sealing interface 22, the cable can pass shrouding assembly 2 through wires mouth 221, and the cable closely laminates with the inner wall of through wires mouth 221, thereby guarantee shrouding assembly 2 under the condition of emboliaing the cable, the cable is with shrouding assembly 2 at the leakproofness of through wires mouth 221 department, thereby guarantee terminal box 100's protection level.

Specifically, as shown in fig. 2 to 3, the sealing interface 22 is a waterproof terminal, the sealing plate 21 is provided with a mounting hole 2111, the waterproof terminal is screwed in the mounting hole 2111, the waterproof terminal is provided with a threading port 221, the sealing plate assembly 2 is sleeved in the cable through the threading port 221, the waterproof terminal can be screwed in the mounting hole 2111, and the inner diameter of the waterproof terminal can be changed in the screwing process of the waterproof terminal, so that the cable is tightly attached to the inner wall of the threading port 221.

Preferably, as shown in fig. 2 to 3, a plurality of sealing ports 22 are provided, and the plurality of sealing ports 22 are separately provided on the closing plate 21, so that a plurality of sets of cables are passed through the different sealing ports 22 into the inside of the junction box 100. Moreover, the size of the threading opening 221 on each sealing interface 22 can be set according to the thickness of the cable passing through the position, so as to meet the requirements of cables with different thicknesses.

In other embodiments, the sealing interface 22 may also be a conical sealing element, the conical sealing element and the sealing plate 21 are integrally formed, the conical sealing element is provided with a threading opening 221, specifically, the conical sealing element is made of a rubber material, the threading opening 221 and the cable are in interference fit, and the rubber material has certain elasticity, so that the cable is conveniently tightly wrapped in the threading opening 221, and the sealing performance of the cable at the threading opening 221 is ensured.

Referring to fig. 3 to 4, a specific connection relationship between the sealing plate 21 and the cartridge body 11 will be described, as shown in fig. 3 to 4, the sealing plate 21 includes a sealing plate body 211 and a connecting portion 212, the sealing plate body 211 is provided with a sealing interface 22, the sealing plate body 211 extends to the inside of the cartridge body 11 to form the connecting portion 212, the cartridge body 11 includes a main body portion 111 and a mounting portion 112, which are connected to each other, a notch 1111 is provided on a side wall of the main body portion 111, and the connecting portion 212 is detachably fixed to the mounting portion 112. Particularly, seted up first locking hole on connecting portion 212, seted up second locking hole on the installation department 112, the retaining member passes first locking hole and second locking hole in proper order and fixes connecting portion 212 on installation department 112, it should be said that the retaining member can be bolted connection, bolted connection is for dismantling the connection to it is firm to have the connection, and the reliability is high, advantage with low costs. In this embodiment, the sealing plate body 211 is provided with a mounting hole 2111.

In addition, as shown in fig. 3 to 4, the sealing plate 21 further includes two limiting plates 213, the limiting plates 213 are connected to the periphery of the sealing plate body 211, the two limiting plates 213 are parallel to each other along the thickness direction of the sealing plate body 211 and are arranged at intervals, the main body portion 111 is provided with a groove 1112 on the side wall of the notch 1111, the limiting plates 213 are inserted into the groove 1112, and the outer walls of the two limiting plates 213 are respectively attached to the two inner walls of the groove 1112. When the sealing plate assembly 2 needs to be clamped on the main body portion 111, the two limiting plates 213 of the sealing plate 21 can be clamped in the grooves 1112 from top to bottom, so that the sealing plate 21 and the box body 11 are ensured to be more stable in connection. In addition, when the connecting portion 212 needs to be fixed on the mounting portion 112 by the locking member, the closing plate 21 and the box body 11 do not need to be manually supported in advance to be mounted with the locking member, and after the closing plate 21 is clamped on the main body portion 111, the locking member can be directly screwed on the connecting portion 212 and the mounting portion 112, so that the connecting portion 212 can be conveniently fixed on the mounting portion 112.

Preferably, the sealing plate assembly 2 further includes sealing plate sealing members, as shown in fig. 3, two of the position limiting plates 213 form a fixing groove 2131, the sealing plate sealing members are disposed in the fixing grooves 2131, and the sealing plate sealing members can be attached to the bottom plate of the groove 1112, so as to ensure the sealing performance of the connection between the position limiting plate 213 and the cartridge body 22.

Particularly, the shrouding sealing member can be joint strip, and joint strip's sealed effectual possesses certain elasticity, the installation of being convenient for, and in addition, joint strip still has advantage with low costs. It should be noted that the sealing rubber strip may be fixed in the fixing groove 2131 in a dispensing manner or a back adhesive bonding manner, so as to prevent the sealing rubber strip from falling off from the inside of the fixing groove 2131, thereby ensuring that the sealing rubber strip can be stably fixed in the fixing groove 2131.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A junction box, comprising:

the box body (1) comprises a box body (11) and a cover plate (12) which are detachably connected, a gap (1111) is formed in the side wall of the box body (11), and a cable is placed into the box body (11) through the gap (1111); and

the sealing plate component (2) is arranged at the notch (1111) and is detachably fixed on the box body (11), and the cable can penetrate through the sealing plate component (2).

2. The junction box of claim 1, wherein said sealing plate assembly (2) comprises:

the sealing plate (21), the sealing plate (21) is detachably fixed on the box body (11); and

sealing interface (22) is connected on shrouding (21), be provided with through wires mouth (221) on sealing interface (22), the cable can pass through wires mouth (221) pass shrouding subassembly (2), and the cable with the inner wall of through wires mouth (221) closely laminates.

3. The junction box of claim 2, wherein the sealing interface (22) is a waterproof terminal, a mounting hole (2111) is formed in the sealing plate (21), the waterproof terminal is screwed in the mounting hole (2111), and the threading port (221) is formed in the waterproof terminal.

4. The junction box of claim 2, wherein the sealing interface (22) is a conical sealing member, the conical sealing member is integrally formed with the sealing plate (21), and the threading opening (221) is formed in the conical sealing member.

5. The junction box according to claim 2, wherein the closing plate (21) comprises a closing plate body (211) and a connecting portion (212), the sealing interface (22) is arranged on the closing plate body (211), and the connecting portion (212) extends from the closing plate body (211) to the inside of the box body (11);

the box body (11) comprises a main body part (111) and an installation part (112) which are connected, the side wall of the main body part (111) is provided with the notch (1111), and the connection part (212) can be detachably fixed on the installation part (112).

6. The junction box according to claim 5, characterized in that said closing plate (21) further comprises:

two limiting plates (213), be connected with on the periphery of shrouding body (211) limiting plate (213), two limiting plate (213) are followed the thickness direction parallel and the interval of shrouding body (211) sets up, main part (111) are in set up on the lateral wall of breach (1111) department fluted (1112), limiting plate (213) are pegged graft in recess (1112), two the outer wall of limiting plate (213) respectively with two interior walls of recess (1112) are laminated mutually.

7. The junction box of claim 6, wherein said sealing plate assembly (2) further comprises:

and the two limiting plates (213) form fixing grooves (2131), the sealing plate sealing elements are arranged in the fixing grooves (2131), and the sealing plate sealing elements can be attached to the bottom plate of the groove (1112).

8. The junction box of claim 7, wherein the sealing plate seal is fixed in the fixing groove (2131) by means of glue dispensing or adhesive-backed fixing.

9. Junction box according to claim 1, characterized in that said box (1) further comprises:

a lid seal (13) disposed between the cartridge body (11) and the lid (12).

10. An inverter comprising an inverter body (200), characterized in that the inverter further comprises a junction box according to any one of claims 1 to 9, the junction box being provided on the inverter body (200).