Distribution box shell and distribution box

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a distribution box shell and a distribution box. The distribution box shell comprises a bottom shell and a cover plate; an opening is formed in one side of the bottom shell, and a first water guide groove is formed in the bottom shell along at least part of the edge of the opening; the cover plate covers the opening, at least part of the edge of the cover plate is provided with a second water guide groove, the first groove wall of the second water guide groove is inserted into the first water guide groove, the end of the first groove wall abuts against the first groove bottom of the first water guide groove, and the second groove wall of the first water guide groove is inserted into the second water guide groove. And the end part of the second groove wall is propped against the second groove bottom of the second water guide groove. By arranging the first water guide groove and the second water guide groove which are mutually matched and abutted, the kinetic energy of the impurities can be reduced by prolonging the flowing path of the impurities and reducing the flowing pressure of the impurities, the kinetic energy of the impurities is basically zero, and the impurities can fall downwards along the Z axis under the action of the gravity of the impurities and cannot enter the bottom shell and the cover plate; the sealing effect between the bottom shell and the cover plate is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus technical field especially relates to distribution box shell and distribution box. BACKGROUND

[0002] At present, for the dust and water (Ingress Protection, abbreviation IP) protection of the distribution box shell of sheet molding compound (Sheet molding compound, abbreviation SMC) material, usually adopts sealing gasket or sealing ring etc. Sealing piece carries out sealing protection.

[0003] However, due to the distribution box shell long-term outdoor use in the process, under the action of sunlight and big day and night temperature difference, it is easy to make the sealing piece gradually rot, causes the IP protection of the distribution box shell to be invalid, leads to the dust and water through the position of the invalid sealing piece and enters the distribution box shell, further affects the distribution element in the distribution box shell;And, because the invalid sealing piece needs to be removed and the new sealing piece is installed correspondingly, increase the maintenance cost of the distribution box shell.

[0004] Therefore, an urgent need arises for a distribution box shell and a distribution box to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of distribution box shell and distribution box, do not need to use sealing piece and carry out sealing protection bottom shell and cover, to be able to avoid the sealing effect between bottom shell and cover in long-term outdoor use invalid, and can reduce the maintenance cost of the distribution box shell.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Distribution box shell, comprising:

[0008] Bottom shell, the side of the bottom shell is equipped with opening, the bottom shell is equipped with first water guide groove along at least part of the edge of opening;

[0009] Cover, cover is equipped in the opening, at least part of the edge of the cover plate is equipped with second water guide groove, the first groove wall of the second water guide groove is inserted in the first water guide groove, and the end of the first groove wall is against the first groove bottom of the first water guide groove, the second groove wall of the first water guide groove is inserted in the second water guide groove, and the end of the second groove wall is against the second groove bottom of the second water guide groove.

[0010] Optionally, the bottom shell is provided with a first water guide groove along three edges of the opening, the cover plate is provided with the second water guide groove at the corresponding position, and the cover plate is detachably connected with the fourth edge of the opening and forms a third water guide groove, which is in communication with the first water guide groove and the second water guide groove respectively.

[0011] Optionally, the cover plate is provided with a lap joint groove, the bottom shell is provided with a first boss along the fourth edge of the opening, the first boss is inserted into the lap joint groove along the Z-axis direction, and the top end surface of the first boss abuts against the top groove wall of the lap joint groove.

[0012] Optionally, one side of the first boss is provided with a second boss, the top end surface of the second boss is lower than that of the first boss, and a flow space is formed between the first boss, the second boss and the lap joint groove.

[0013] Optionally, the top end of the bottom shell is provided with a third boss, the bottom end of the first boss is connected with the third boss, the end of the lap joint groove extends towards the top end surface of the third boss, the third groove wall of the lap joint groove, the third boss and the second boss form the third water guide groove, and the flow space is in communication with the third water guide groove.

[0014] Optionally, the second boss has a first plane, an inclined surface and a second plane, the lengths of the first plane and the second plane extend along the Y-axis, the first plane is perpendicular to the second plane, the inclined surface is connected to the first plane and the second plane, and the third groove wall is spaced apart from the second plane.

[0015] Optionally, the bottom shell is provided with an injection nut or a threaded hole, the cover plate is provided with a threaded hole or an injection nut at the corresponding position, and the injection nut and the threaded hole are fixedly connected through a fastening bolt.

[0016] Optionally, the bottom end of the bottom shell is provided with a first drain hole, the first drain hole is in communication with the first water guide groove, the bottom end of the cover plate is provided with a second drain hole, and the second drain hole is in communication with the second water guide groove.

[0017] Optionally, at least part of the edge of the bottom shell is connected with a fourth groove wall, one side of the fourth groove wall is provided with the second groove wall and the first groove bottom, one end of the first groove bottom is connected with the fourth groove wall, the other end of the first groove bottom is connected with the second groove wall, and the second groove wall, the first groove bottom and the fourth groove wall form the first water guide groove; and / or,

[0018] At least part of the edge of the cover plate is connected with the first groove wall, one side of the first groove wall is provided with a fifth groove wall and a second groove bottom, one end of the second groove bottom is connected with the first groove wall, the other end of the second groove bottom is connected with the fifth groove wall, and the first groove wall, the second groove bottom and the fifth groove wall form the second water guide groove.

[0019] A distribution box includes a distribution element and a distribution box housing as described above, the distribution element being mounted within the distribution box housing.

[0020] Beneficial effects:

[0021] The distribution box housing provided by the utility model, by making the first groove wall of the second water guide groove on the cover plate inserted into the first water guide groove on the bottom shell, and making the end of the first groove wall abut against the first groove bottom of the first water guide groove, at the same time, making the second groove wall of the first water guide groove inserted into the second water guide groove, and making the end of the second groove wall abut against the second groove bottom of the second water guide groove, three water guide groove structures can be formed by the abutment of the first water guide groove and the second water guide groove, that is, three water guide groove structures are formed between the bottom shell and the cover plate; when water or impurities such as dust flows into the gap between the first water guide groove and the second water guide groove along the X axis, due to the first abutment blocking action between the second groove wall of the first water guide groove and the second groove bottom of the second water guide groove, the kinetic energy of the water or impurities such as dust is reduced for the first time; then, due to the second abutment blocking action between the first groove wall of the second water guide groove and the first groove bottom of the first water guide groove, the kinetic energy of the water or impurities such as dust flowing into the first water guide groove and the second water guide groove is reduced for the second time, that is, the water or impurities such as dust after the kinetic energy is reduced for two times basically has no kinetic energy, so that the water or impurities such as dust flowing into the second water guide groove and the first water guide groove finally can automatically fall downwards along the Z axis under the action of gravity, and will not enter the bottom shell and the cover plate, so that the sealing effect between the bottom shell and the cover plate is realized, the bottom shell and the cover plate do not need to be sealed and protected by using a sealing element, the sealing element can be avoided from being corroded in the long-term outdoor use process, so that the water and dust can not enter the distribution box housing through the position of the failed sealing element, the sealing and protection effect of the distribution box housing in the long-term outdoor use process is better, and the distribution element in the distribution box housing can be better protected; and since the sealing element does not need to be disassembled and replaced, the maintenance cost of the distribution box housing is reduced, so that the cost of the entire distribution box is lower. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a partial exploded structure schematic view of the distribution box provided in the utility model;

[0023] Figure 2 It is a partial structure sectional view of the distribution box housing (seen from top to bottom along the Z axis) provided in the utility modelFigure 1 ;

[0024] Figure 3 is a structural schematic view of a bottom shell (part of power distribution elements are installed) provided in the utility model;

[0025] Figure 4 is Figure 3 a partial enlarged structural schematic view of A in the figure;

[0026] Figure 5 is a side view of the enlarged structure of the first boss, the second boss and the third boss provided at the top end of the bottom shell provided in the utility model;

[0027] Figure 6 is Figure 3 a partial enlarged structural schematic view of B in the figure;

[0028] Figure 7 is a structural schematic view of a cover plate provided in the utility model;

[0029] Figure 8 is Figure 7 a partial enlarged structural schematic view of C in the figure;

[0030] Figure 9 is Figure 7 a partial enlarged structural schematic view of D in the figure;

[0031] Figure 10 is a sectional view of part of the structure of the power distribution box shell (seen along the Y axis side) provided in the utility model Figure 2 .

[0032] in the figure:

[0033] 1, bottom shell; 11, first water guide groove; 111, second groove wall; 112, first groove bottom; 113, fourth groove wall; 12, first drain hole; 13, first boss; 14, second boss; 141, first plane; 142, inclined surface; 143, second plane; 15, third boss; 16, flow space; 17, third water guide groove; 18, limiting boss; 19, injection nut;

[0034] 2, cover plate; 21, second water guide groove; 211, first groove wall; 212, second groove bottom; 213, fifth groove wall; 22, second drain hole; 23, lapping groove; 231, third groove wall; 232, sixth groove wall; 233, top groove wall; 24, protruding block; 25, limiting groove; 26, threaded hole; 27, fastening bolt. DETAILED DESCRIPTION

[0035] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely intended to explain the utility model and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0036] In the description of the utility model, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] In the utility model, unless explicitly defined and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0038] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0039] The utility model discloses a distribution box shell and a distribution box comprising the same. The distribution box further comprises a distribution element, which is installed in the distribution box shell to provide better IP protection for the distribution element through the distribution box shell, thereby ensuring normal use performance and service life of the distribution element. The distribution element is a common distribution structure in existing distribution boxes, and detailed description of the specific structure and working principle of the distribution element is not given here. In the embodiment, the distribution box can be a low-voltage distribution box.

[0040] Specifically, as Figure 1 and Figure 2As shown, the distribution box shell comprises a bottom shell 1 and a cover plate 2; wherein one side of the bottom shell 1 is provided with an opening, and the bottom shell 1 is provided with a first water guide groove 11 along at least part of the edge of the opening; the cover plate 2 is provided on the opening, and at least part of the edge of the cover plate 2 is provided with a second water guide groove 21, the first groove wall 211 of the second water guide groove 21 is inserted into the first water guide groove 11, and the end of the first groove wall 211 abuts against the first groove bottom 112 of the first water guide groove 11, the second groove wall 111 of the first water guide groove 11 is inserted into the second water guide groove 21, and the end of the second groove wall 111 abuts against the second groove bottom 212 of the second water guide groove 21. It should be noted that the width of the first groove wall 211 is less than the width of the first water guide groove 11, and the first groove wall 211 does not contact the second groove wall 111 and the fourth groove wall 113 of the first water guide groove 11. The width of the second groove wall 111 is less than the width of the second water guide groove 21, and the second groove wall 111 does not contact the first groove wall 211 and the fifth groove wall 213 of the second water guide groove 21.

[0041] The power distribution box shell in the embodiment changes the sealing mode between the bottom shell 1 and the cover plate 2 relative to the prior art; by inserting the first slot wall 211 of the second water guide groove 21 into the first water guide groove 11, and the end of the first slot wall 211 abutting against the first slot bottom 112 of the first water guide groove 11, the second slot wall 111 of the first water guide groove 11 is inserted into the second water guide groove 21, and the end of the second slot wall 111 abuts against the second slot bottom 212 of the second water guide groove 21, so that the three water guide groove structures can be formed by the abutting of the first water guide groove 11 and the second water guide groove 21, that is, the bottom shell 1 and the cover plate 2 form three water guide groove structures between each other; when water or dust and other impurities flow along the X-axis into the gap between the first water guide groove 11 and the second water guide groove 21, the kinetic energy of the water or dust and other impurities is first reduced due to the first abutting blocking action between the second slot wall 111 of the first water guide groove 11 and the second slot bottom 212 of the second water guide groove 21; then, a small part of the water or dust and other impurities will continue to flow into the first water guide groove 11 and the second water guide groove 21, and the kinetic energy of the water or dust and other impurities is secondly reduced by the second abutting blocking action between the first slot wall 211 of the second water guide groove 21 and the first slot bottom 112 of the first water guide groove 11, that is, the water or dust and other impurities whose kinetic energy has been reduced twice basically do not have kinetic energy, so that the water or dust and other impurities finally flowing into the second water guide groove 21 and the first water guide groove 11 will automatically fall downward along the Z-axis under the action of its own gravity, and will not enter the bottom shell 1 and the cover plate 2, thereby realizing the sealing effect between the bottom shell 1 and the cover plate 2, without the need to use a sealing element to seal and protect the bottom shell 1 and the cover plate 2, which can avoid the corrosion of the sealing element in the long-term outdoor use process, so that dust and water can enter the power distribution box shell through the position of the failed sealing element, so as to ensure that the sealing and protection effect of the power distribution box shell is good in the long-term outdoor use, thereby better protecting the power distribution elements in the power distribution box shell; moreover, since the sealing element does not need to be disassembled and replaced, the maintenance cost of the power distribution box shell is reduced, thereby making the cost of the entire power distribution box lower.

[0042] And, the three water guide groove structures are formed by the abutting fit between the first water guide groove 11 and the second water guide groove 21, so as to prolong the flow path of the water or dust and the like impurities; on the one hand, the water or dust and the like impurities are greatly lost, so that only a small amount of water or dust and the like impurities enter the gap between the second water guide groove 21 and the first water guide groove 11; on the other hand, the flow pressure of the impurities is reduced by prolonging the flow path of the impurities, so as to better ensure that the kinetic energy of the water or dust and the like impurities entering between the second water guide groove 21 and the first water guide groove 11 is substantially zero, thereby better ensuring that the water or dust and the like impurities flowing into the second water guide groove 21 and the first water guide groove 11 will automatically fall downward along the Z-axis under the action of gravity. The flow path of the water or dust and the like impurities in the first water guide groove 11 and the second water guide groove 21 is specifically shown by the arrow E in Figure 2 .

[0043] It is worth noting that in the present embodiment, the abutting fit between the first water guide groove 11 and the second water guide groove 21 is used to realize the sealing protection between the bottom shell 1 and the cover plate 2, that is, the sealing protection level between the bottom shell 1 and the cover plate 2 is IP44, so as to ensure that the entire distribution box shell can be used outdoors for a long time, and the entire distribution box can be used outdoors for at least fifteen years.

[0044] Further, as shown in Figures 3 to 5 , the bottom shell 1 is provided with the first water guide groove 11 along three edges of the opening, the cover plate 2 is provided with the second water guide groove 21 at the corresponding position, the cover plate 2 is detachably connected with the fourth edge of the opening and forms the third water guide groove 17, and the third water guide groove 17 is in communication with the first water guide groove 11 and the second water guide groove 21.

[0045] Specifically, after the water or dust and the like impurities enter the gap between the top end of the bottom shell 1 and the top end of the cover plate 2 along the X-axis, the impurities will enter the third water guide groove 17 to reduce the kinetic energy after collision and path extension in the third water guide groove 17, so that the impurities in the third water guide groove 17 will automatically flow into the first water guide groove 11 and the second water guide groove 21 under the action of gravity, thereby realizing the sealing protection effect of the top end of the bottom shell 1 and the cover plate 2.

[0046] Further, as shown in Figures 5 to 10 , the cover plate 2 is provided with a lap joint groove 23; the bottom shell 1 is provided with a first boss 13 along the fourth edge of the opening, the first boss 13 is inserted into the lap joint groove 23 along the Z-axis direction, and the top end surface of the first boss 13 abuts with the top groove wall 233 of the lap joint groove 23. In other embodiments, the top end of the cover plate 2 can also be hingedly and sealingly arranged at the top end of the bottom shell 1, which is not limited here.

[0047] As shown in Figure 10As shown, by making the top end face of the first boss 13 abut against the top groove wall 233 of the lap joint groove 23; on the one hand, the top end of the cover plate 2 can be lapped on the top end of the bottom shell 1, thereby realizing the lap joint connection between the cover plate 2 and the bottom shell 1, that is, in this embodiment, the lap joint connection mode is adopted, compared with the hinge connection mode between the cover plate 2 and the bottom shell 1 in the prior art, the connection mode is simple and convenient, the connection cost is lower, and the operation space can be reduced, so that the distribution box shell is suitable for narrow installation space; on the other hand, due to the abutting action between the top end face of the first boss 13 and the top groove wall 233 of the lap joint groove 23, the top end of the cover plate 2 and the top end of the bottom shell 1 can be sealed, which can better ensure that impurities cannot flow into the bottom shell 1 and the cover plate 2 through the gap between the top end face of the first boss 13 and the top groove wall 233 of the lap joint groove 23, and the sealing protection effect of the distribution box shell in long-term outdoor use can be further ensured.

[0048] Further, as shown in Figure 5 and Figure 10 , the second boss 14 extending along the Y axis is arranged at the top end of the bottom shell 1, the second boss 14 is located on one side of the first boss 13, the top end face of the second boss 14 is lower than the top end face of the first boss 13, and the first boss 13, the second boss 14 and the lap joint groove 23 form a flow space 16 therebetween.

[0049] By forming a flow space 16 with a larger size, when the impurities in the third water guide groove 17 flow into the flow space 16, the flow space 16 can prolong the flow path of the impurities, thereby reducing the kinetic energy of the impurities flowing into the flow space 16, and further ensuring that the kinetic energy of the impurities in the flow space 16 is small, so that the impurities with small kinetic energy in the flow space 16 automatically fall into the first water guide groove 11 and the second water guide groove 21 after passing through the third water guide groove 17.

[0050] Further, as shown in Figure 5 and Figure 10 , the third boss 15 is arranged at the top end of the bottom shell 1, the bottom end of the first boss 13 is connected with the third boss, that is, the second boss 14 is located between the first boss 13 and the third boss 15, the top end face of the third boss 15 is lower than the top end face of the second boss 14, so that the first boss 13, the second boss 14 and the third boss 15 form a stepped structure therebetween; the cover plate 2 is provided with a lap joint groove 23, the end portion of the lap joint groove 23 extends towards the top end face of the third boss 15, and the third groove wall 231 of the lap joint groove 23, the third boss 15 and the second boss 14 form the third water guide groove 17 described above therebetween, and the flow space 16 communicates with the third water guide groove 17.

[0051] Specifically, as shown in Figure 5 and Figure 10As shown, the second boss 14 has a first plane 141, an inclined plane 142 and a second plane 143, all of which extend along the Y axis; the first plane 141 is perpendicular to the second plane 143, and the inclined plane 142 is connected to the first plane 141 and the second plane 143; the third groove wall 231 of the overlap groove 23 is spaced apart from the second plane 143, so as to communicate the flow space 16 and the third water guide groove 17 through the space.

[0052] As shown, Figure 10 by making the second boss 14 have the first plane 141, the inclined plane 142 and the second plane 143, that is, making the second boss 14 have a polygonal column structure; on the one hand, the inclined plane 142 and the first plane 141 are spaced apart from the third groove wall 231 of the overlap groove 23, so as to facilitate the formation of the flow space 16 between the inclined plane 142, the first plane 141, the overlap groove 23 and the first boss 13; on the other hand, the third groove wall 231 of the overlap groove 23 is spaced apart from the second plane 143, so as to ensure that only a small amount of impurities can flow into the flow space 16 through the space between the third groove wall 231 of the overlap groove 23 and the second plane 143, so as to make the amount of impurities loss larger, and thus make the amount of impurities entering the flow space 16 smaller, which is more conducive to reducing the kinetic energy of the impurities in the flow space 16.

[0053] Specifically, as shown, Figure 10 the top end of the cover plate 2 is connected with a sixth groove wall 232, one side of the sixth groove wall 232 is provided with the third groove wall 231 and the top groove wall 233, one end of the top groove wall 233 is connected with the third groove wall 231, the other end of the top groove wall 233 is connected with the sixth groove wall 232, the sixth groove wall 232, the top groove wall 233 and the third groove wall 231 are connected to form the overlap groove 23, and a part of the inner wall surface of the top groove wall 233 abuts against the top end surface of the first boss 13, the other part of the inner wall surface of the top groove wall 233, the side edge of the first boss 13, the first plane 141, the inclined plane 142 and the third groove wall 231 form the flow space 16, and the end of the third groove wall 231 extends to the top end surface of the third boss 15.

[0054] It is worth noting that, as shown, Figure 5 and Figure 10As shown, the third groove wall 231, the sixth groove wall 232, the top groove wall 233 and the cover plate 2 in the embodiment are integrally formed structures. In order to reduce the processing difficulty of the integrally formed structure, there will be a processing error in the integrally formed structure processed. In order to ensure the close abutment effect between the inner wall surface of the top groove wall 233 and the top end surface of the first boss 13, there will be a small gap between the bottom end surface of the third groove wall 231 and the top end surface of the third boss 15, that is, the gap between the bottom end surface of the third groove wall 231 and the top end surface of the third boss 15 is 0.2-0.5 mm, so that the close abutment between the inner wall surface of the top groove wall 233 and the top end surface of the first boss 13 is ensured, and impurities cannot flow through the inner wall surface of the top groove wall 233 and the top end surface of the first boss 13.

[0055] Specifically, as shown in Figure 10 , when water or dust and other impurities enter the gap between the bottom end surface of the third groove wall 231 and the top end surface of the third boss 15 along the X axis, the impurities will enter the third water guide groove 17. After colliding and extending in the third water guide groove 17, the impurities will reduce the kinetic energy. Then, the impurities in the third water guide groove 17 will enter the flow space 16 through the gap between the third groove wall 231 and the second plane 143, so that the kinetic energy of the impurities in the flow space 16 is basically zero after colliding and extending. At this time, the impurities in the flow space 16 will re-enter the third water guide groove 17 through the gap between the third groove wall 231 and the second plane 143, so that the impurities in the third water guide groove 17 will automatically flow into the first water guide groove 11 and the second water guide groove 21 under the action of their own gravity. The flow path of water or dust and other impurities in the third water guide groove 17 and the flow space 16 is shown by arrow F in Figure 10 .

[0056] It is worth noting that, as shown in Figure 10 , because the abutment between the inner wall surface of the top groove wall 233 and the top end surface of the first boss 13 is relatively close, the impurities in the flow space 16 cannot enter the cover plate 2 and the bottom shell 1 through the gap between the inner wall surface of the top groove wall 233 and the top end surface of the first boss 13, so as to ensure that the impurities in the flow space 16 can only reflow into the third water guide groove 17, and then flow into the first water guide groove 11 and the second water guide groove 21 through the third water guide groove 17.

[0057] Further, the bottom shell 1 and the cover plate 2 are threadedly connected. Specifically, as shown in Figure 1 , Figure 6 and Figure 9As shown, the bottom shell 1 is provided with an injection nut 19 or a threaded hole 26; the cover plate 2 is correspondingly provided with a threaded hole 26 or an injection nut 19; the injection nut 19 and the threaded hole 26 are fixedly connected through a fastening bolt 27 to realize the fastening connection between the bottom shell 1 and the cover plate 2, and ensure the stability of the connection between the bottom shell 1 and the cover plate 2.

[0058] In this embodiment, the injection nut 19 is arranged at the bottom end of the bottom shell 1, that is, the injection nut 19 is embedded during the injection molding of the bottom shell 1; the threaded hole 26 is arranged at the bottom end of the cover plate 2, and the fastening bolt 27 is threadedly connected into the threaded hole 26. In other embodiments, the bottom end of the bottom shell 1 and the bottom end of the cover plate 2 can also be locked by a padlock, which is not limited here.

[0059] Specifically, as shown in Figure 6 and Figure 9 One of the bottom end of the bottom shell 1 and the bottom end of the cover plate 2 is provided with a limiting boss 18, and the other is provided with a limiting groove 25; the limiting boss 18 can be clamped into the limiting groove 25 to realize accurate positioning between the bottom shell 1 and the cover plate 2, which is beneficial to the accurate positioning between the bottom shell 1 and the cover plate 2, so as to accurately fix and connect the bottom shell 1 and the cover plate 2 through the fastening bolt 27 and the injection nut 19. In this embodiment, the limiting boss 18 is arranged at the bottom end of the bottom shell 1, and the limiting groove 25 is arranged at the bottom end of the cover plate 2.

[0060] Specifically, as shown in Figure 6 and Figure 9 The injection nut 19 is arranged on the limiting boss 18; the protrusion 24 is arranged at the bottom end of the cover plate 2, the limiting groove 25 is arranged on the protrusion 24, and the threaded hole 26 is arranged on the protrusion 24, and the threaded hole 26 is in communication with the limiting groove 25.

[0061] It is worth noting that the above-mentioned various abutting and fitting positions can be provided with a guide round corner to provide an installation guide function through the guide round corner, so as to ensure the accurate fitting between the above-mentioned various abutting and fitting positions, thereby ensuring the smooth and labor-saving assembly process between the cover plate 2 and the bottom shell 1. Here, the specific size of the guide round corner is not limited.

[0062] Specifically, as shown in Figure 6 and Figure 9As shown, the bottom end of the bottom shell 1 is provided with a first drain hole 12, which is in communication with the first water guide groove 11; the bottom end of the cover plate 2 is provided with a second drain hole 22, which is in communication with the second water guide groove 21, and when the cover plate 2 is covered on the opening of one side of the bottom shell 1, the second drain hole 22 is aligned with the first drain hole 12, so that the impurities in the first water guide groove 11 and the second water guide groove 21 that fall automatically downward along the Z axis can be discharged to the outside of the entire distribution box shell through the aligned first drain hole 12 and the second drain hole 22.

[0063] Further, as shown, Figures 2 to 9 the at least part of the edge of the bottom shell 1 is connected with the fourth groove wall 113, one side of the fourth groove wall 113 is provided with the second groove wall 111 and the first groove bottom 112, one end of the first groove bottom 112 is connected with the fourth groove wall 113, the other end of the first groove bottom 112 is connected with the second groove wall 111, the second groove wall 111, the first groove bottom 112 and the fourth groove wall 113 are connected to form the first water guide groove 11; and / or, the at least part of the edge of the cover plate 2 is connected with the first groove wall 211, one side of the first groove wall 211 is provided with the fifth groove wall 213 and the second groove bottom 212, one end of the second groove bottom 212 is connected with the first groove wall 211, the other end of the second groove bottom 212 is connected with the fifth groove wall 213, the first groove wall 211, the second groove bottom 212 and the fifth groove wall 213 are connected to form the second water guide groove 21.

[0064] Specifically, as shown, Figure 2 the second groove wall 111 is inserted between the first groove wall 211 and the fifth groove wall 213, and the end of the second groove wall 111 abuts against the second groove bottom 212 along the X axis, the first groove wall 211 is inserted between the second groove wall 111 and the fourth groove wall 113, and the end of the first groove wall 211 abuts against the first groove bottom 112 along the X axis. Among them, each groove wall and each groove bottom involved in the embodiment are specifically a flat plate structure with a certain thickness.

[0065] It is worth noting that, as shown, Figure 2 after the above-mentioned impurities such as water or dust enter the gap between the first groove wall 211 and the second groove wall 111, due to the abutting action between the first groove wall 211 and the first groove bottom 112, the kinetic energy of the impurities can be reduced for the second time; then, the impurities between the first groove wall 211 and the first groove bottom 112 will flow into the gap between the first groove wall 211 and the fourth groove wall 113, so that the impurities in the gap between the first groove wall 211 and the fourth groove wall 113 will automatically fall downward along the Z axis under the action of their own gravity, and will not enter the bottom shell 1 and the cover plate 2.

[0066] It is worth noting that, as shown, Figure 2As shown, the above-mentioned impurities such as water or dust flow into the gap between the second groove wall 111 and the second water guide groove 21 along the X axis, specifically, the impurities flow into the gap between the second groove wall 111 and the fifth groove wall 213 along the X axis; then, the impurities enter the gap between the second groove wall 111 and the first groove wall 211 through the gap between the second groove wall 111 and the second groove bottom 212; wherein, due to the abutting action between the second groove wall 111 and the second groove bottom 212, the kinetic energy of the impurities can be reduced for the first time.

[0067] The power distribution box shell in the embodiment can prolong the flow path of impurities such as water or dust in the first water guide groove 11 and the second water guide groove 21 by the mutual abutting of the first water guide groove 11 and the second water guide groove 21, so as to reduce the kinetic energy of the impurities; and the kinetic energy of the impurities in the first water guide groove 11 and the second water guide groove 21 can be further reduced by the abutting blocking action between the second groove wall 111 and the second groove bottom 212 and the abutting blocking action between the first groove wall 211 and the first groove bottom 112, so that the impurities with kinetic energy of substantially zero in the first water guide groove 11 and the second water guide groove 21 automatically fall downward along the Z axis under the action of their own gravity and are discharged to the outside of the power distribution box shell through the first drain hole 12 and the second drain hole 22, thereby avoiding the impurities such as water or dust from entering the power distribution box shell, so as to realize the sealing effect between the cover plate 2 and the bottom shell 1.

[0068] The power distribution box shell in the embodiment can prolong the flow path of impurities such as water or dust in the first water guide groove 11 and the second water guide groove 21 by the mutual abutting of the first water guide groove 11 and the second water guide groove 21, so as to reduce the kinetic energy of the impurities; and the kinetic energy of the impurities in the first water guide groove 11 and the second water guide groove 21 can be further reduced by the abutting blocking action between the second groove wall 111 and the second groove bottom 212 and the abutting blocking action between the first groove wall 211 and the first groove bottom 112, so that the impurities with kinetic energy of substantially zero in the first water guide groove 11 and the second water guide groove 21 automatically fall downward along the Z axis under the action of their own gravity and are discharged to the outside of the power distribution box shell through the first drain hole 12 and the second drain hole 22, thereby avoiding the impurities such as water or dust from entering the power distribution box shell, so as to realize the sealing effect between the cover plate 2 and the bottom shell 1.

[0069] The distribution box shell in the embodiment realizes the accurate positioning between the bottom shell 1 and the cover plate 2 through the limiting clamping action between the limiting boss 18 and the limiting groove 25, and realizes the close connection between the bottom shell 1 and the cover plate 2 through the screwing between the injection nut 19 and the fastening bolt 27, so as to guarantee the accuracy and stability of the connection between the bottom shell 1 and the cover plate 2.

[0070] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For the ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An electrical box housing, characterized by, include: The bottom shell (1) has an opening on one side, and the bottom shell (1) has a first water guide groove (11) along at least a portion of the edge of the opening; A cover plate (2) is provided at the opening. At least a portion of the edge of the cover plate (2) is provided with a second water guide groove (21). The first groove wall (211) of the second water guide groove (21) is inserted into the first water guide groove (11), and the end of the first groove wall (211) abuts against the first groove bottom (112) of the first water guide groove (11). The second groove wall (111) of the first water guide groove (11) is inserted into the second water guide groove (21), and the end of the second groove wall (111) abuts against the second groove bottom (212) of the second water guide groove (21).

2. The electrical box housing of claim 1, wherein, The bottom shell (1) is provided with a first water guide groove (11) along three edges of the opening, and the cover plate (2) is provided with a second water guide groove (21) at the corresponding position. The cover plate (2) is detachably connected to the fourth edge of the opening to form a third water guide groove (17). The third water guide groove (17) is connected to the first water guide groove (11) and the second water guide groove (21) respectively.

3. The distribution box housing according to claim 2, characterized in that, The cover plate (2) is provided with an overlap groove (23); the bottom shell (1) is provided with a first boss (13) along the fourth edge of the opening, the first boss (13) is inserted into the overlap groove (23) along the Z-axis direction, and the top surface of the first boss (13) is in contact with the top groove wall (233) of the overlap groove (23).

4. The distribution box housing according to claim 3, characterized in that, A second boss (14) is provided on one side of the first boss (13). The top surface of the second boss (14) is lower than the top surface of the first boss (13). A flow space (16) is formed between the first boss (13), the second boss (14) and the overlapping groove (23).

5. The distribution box housing according to claim 4, characterized in that, The top of the bottom shell (1) is provided with a third protrusion (15), the bottom end of the first protrusion (13) is connected to the third protrusion (15), the end of the cover plate (2) provided with the overlapping groove (23) extends toward the top surface of the third protrusion (15), the third groove wall (231) of the overlapping groove (23), the third protrusion (15) and the second protrusion (14) form the third water guide groove (17), and the flow space (16) is connected to the third water guide groove (17).

6. The distribution box housing according to claim 5, characterized in that, The second boss (14) has a first plane (141), an inclined surface (142), and a second plane (143) that both extend along the Y-axis. The first plane (141) is perpendicular to the second plane (143). The inclined surface (142) connects the first plane (141) and the second plane (143). The third groove wall (231) is spaced apart from the second plane (143).

7. The distribution box casing according to any one of claims 2-6, characterized in that, The bottom shell (1) is provided with an injection nut (19) or a threaded hole (26); the cover plate (2) is provided with a corresponding threaded hole (26) or an injection nut (19); the injection nut (19) and the threaded hole (26) are fixedly connected by a fastening bolt (27).

8. The distribution box enclosure according to any one of claims 1-6, characterized in that, The bottom end of the bottom shell (1) is provided with a first drainage hole (12), which is connected to the first water guide groove (11); the bottom end of the cover plate (2) is provided with a second drainage hole (22), which is connected to the second water guide groove (21).

9. The distribution box casing according to any one of claims 1-6, characterized in that, At least a portion of the edge of the bottom shell (1) is connected to a fourth channel wall (113). One side of the fourth channel wall (113) is provided with a second channel wall (111) and a first channel bottom (112). One end of the first channel bottom (112) is connected to the fourth channel wall (113), and the other end of the first channel bottom (112) is connected to the second channel wall (111). The second channel wall (111), the first channel bottom (112), and the fourth channel wall (113) together form the first water guiding channel (11); and / or, At least a portion of the edge of the cover plate (2) is connected to the first groove wall (211). A fifth groove wall (213) and a second groove bottom (212) are provided on one side of the first groove wall (211). One end of the second groove bottom (212) is connected to the first groove wall (211), and the other end of the second groove bottom (212) is connected to the fifth groove wall (213). The first groove wall (211), the second groove bottom (212), and the fifth groove wall (213) surround and form the second water guide groove (21).

10. A distribution box, characterized in that, It includes power distribution components and a distribution box housing as described in any one of claims 1-9, wherein the power distribution components are installed inside the distribution box housing.

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