Shell assembly and distribution box

Abstract

The utility model belongs to the technical field of box body sealing, and discloses a housing assembly and a distribution box, the housing assembly comprises a first housing, the side surface of which is provided with a sealing groove extending along the circumferential direction, and the sealing groove is internally provided with a first pressing part in a protruding manner; the sealing ring is embedded in the sealing groove; the second shell can be buckled with the first shell to form a closed cavity, the second shell is provided with a second pressing part corresponding to the sealing groove, in the buckled state, the second pressing part tightly presses the sealing ring on the first pressing part, and the pressing face, abutting against the sealing ring, of the first pressing part is parallel to the pressing face, abutting against the sealing ring, of the second pressing part. The sealing ring of the shell assembly is pressed by the first press-fit part and the second press-fit part together, it is guaranteed that the sealing ring effectively blocks the gap between the first shell and the second shell, and even if the body of the first shell or the body of the second shell is of a complex multi-curved-surface structure, the excellent sealing effect and waterproof performance can be kept.

Description

Technical Field

[0001] The utility model relates to the technical field of box body sealing, in particular to a housing assembly and a distribution box. Background Art

[0002] With the progress of technology, electronic devices and precision instruments are more and more widely used in various fields. These devices usually need to operate in various complex environments, such as humid and dusty environments.

[0003] Therefore, the requirements for the sealing performance of the device housing are also getting higher and higher. The existing waterproof structures of plastic panels and metal boxes mostly have problems such as poor sealing and poor waterproof performance, and cannot meet the application scenarios with high sealing requirements.

[0004] Therefore, there is an urgent need for a housing assembly and a distribution box to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a housing assembly and a distribution box, in which the sealing ring is jointly pressed by the first pressing part and the second pressing part to ensure that the sealing ring effectively blocks the gap between the first housing and the second housing. Even if the main body of the first housing or the second housing adopts a complex multi-curved surface structure, excellent sealing effect and waterproof performance can be maintained.

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

[0007] In a first aspect, a housing assembly is provided, including:

[0008] A first housing, on the side of which there is a sealing groove extending circumferentially, and a first pressing part is convexly provided in the sealing groove;

[0009] A sealing ring, embedded in the sealing groove;

[0010] A second housing, which can be buckled with the first housing to form a closed cavity. The second housing is provided with a second pressing part corresponding to the sealing groove. In the buckled state, the second pressing part presses the sealing ring against the first pressing part, and the pressing surface of the first pressing part pressing against the sealing ring is parallel to the pressing surface of the second pressing part pressing against the sealing ring.

[0011] Preferably, the first pressing part extends in the same direction as the sealing groove, and the distance between the first pressing part and the notch of the sealing groove is equal everywhere.

[0012] Preferably, both the first pressing part and the second pressing part are arranged in a ribbed structure, and the height direction of the first pressing part is the same as the depth direction of the sealing groove. In the buckled state, the first pressing part and the second pressing part are arranged opposite to each other.

[0013] Preferably, the first housing is configured as a cover plate structure, and the second housing is configured as a box body structure with an opening at one end. The first housing covers the opening, and the second pressing portion is arranged around the opening.

[0014] Preferably, the material of the first housing is plastic material; and / or

[0015] the material of the second housing is metal material.

[0016] Preferably, the second pressing portion is arranged at the edge of the opening, and the second pressing portion is formed by a bending process.

[0017] Preferably, a first limiting rib and a second limiting rib are arranged on the side surface of the first housing facing the second housing. Both the first limiting rib and the second limiting rib extend along the circumferential direction of the first housing and are arranged at intervals inside and outside. The gap between the first limiting rib and the second limiting rib forms the sealing groove.

[0018] Preferably, a screw connection seat is provided on one of the first housing and the second housing. A threaded hole is provided on the screw connection seat. A mounting through hole is correspondingly provided on the other of the first housing and the second housing. The first housing and the second housing are locked by a screw passing through the mounting through hole and screwed to the screw connection seat.

[0019] Preferably, a locking platform is wound around the outside of the second pressing portion. Along the extending direction of the locking platform, a plurality of the screw connection seats are arranged at intervals on the second housing, and a plurality of the mounting through holes are correspondingly provided on the first housing. The mounting through holes are arranged outside the sealing groove.

[0020] Preferably, a shielding portion is wound around the peripheral edge of the first housing. The shielding portion extends towards the second housing. The shielding portion is used to shield the sealing groove and the sealing ring from the outside.

[0021] In a second aspect, a distribution box is provided, including the housing assembly as described above and an electrical component. The electrical component is installed in the closed cavity.

[0022] Advantages of the present utility model:

[0023] The housing assembly provided by the present utility model seals the gap between the first housing and the second housing through a sealing ring. A sealing groove is provided on the first housing, and the sealing ring is embedded in the sealing groove. The sealing ring is abutted in the sealing groove through a first pressing portion. The second housing is provided with a second pressing portion corresponding to the sealing groove. When the first housing and the second housing are buckled, the second pressing portion will press against the outer side of the sealing ring, and the sealing ring is jointly held by the first pressing portion and the second pressing portion, thereby sealing the gap between the first housing and the second housing. Since the pressing surfaces of the first pressing portion and the second pressing portion are parallel to each other, it can ensure that the sealing ring effectively blocks the gap between the first housing and the second housing. Even if the main body of the first housing or the second housing adopts a complex multi-curved surface structure, excellent sealing effect and waterproof performance can still be maintained. Brief Description of the Drawings

[0024] Figure 1 is an exploded structural schematic diagram of the housing assembly provided by the present utility model;

[0025] Figure 2 is an internal structural schematic diagram of the housing assembly provided by the present utility model;

[0026] Figure 3 is Figure 2 an enlarged schematic diagram of area A in

[0027] Figure 4 is a structural schematic diagram of the first housing provided by the present utility model;

[0028] Figure 5 is a schematic diagram of the cooperation between the first housing provided by the present utility model and the sealing ring Figure 1 ;

[0029] Figure 6 is a schematic diagram of the cooperation between the first housing provided by the present utility model and the sealing ring Figure 2 ;

[0030] Figure 7 is Figure 6 an enlarged schematic diagram of area B in

[0031] Figure 8 is a structural schematic diagram of the second housing provided by the present utility model.

[0032] In the figure:

[0033] 100, first housing; 101, first limiting rib; 102, second limiting rib; 103, reinforcing rib; 104, shielding portion; 200, second housing; 201, opening; 202, locking platform; 300, closed cavity;

[0034] 10. Sealing groove; 20. First pressing part; 30. Second pressing part; 40. Sealing ring; 41. Telescopic hole; 50. Screwed seat; 60. Mounting through hole; 70. Screw; 71. Flat washer; 72. Spring washer. Detailed implementation mode

[0035] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0036] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact of the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above and to the right of", and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below and to the left of", and "under the bottom of" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0038] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying 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 to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0039] As Figures 1-8As shown in the figure, this embodiment provides a distribution box, which includes a housing assembly and an electrical assembly. The electrical assembly is installed inside the housing assembly and includes other electrical components such as a circuit breaker, a contactor, a fuse, and an electrical instrument. The housing assembly includes a first housing 100, a second housing 200, and a sealing ring 40. The first housing 100 can be fastened to the second housing 200 to form a closed cavity 300 for accommodating the electrical assembly.

[0040] Further, as Figures 1-8 shown, a sealing groove 10 extending circumferentially is provided on the side of the first housing 100 facing the second housing 200. A first pressing portion 20 protrudes inside the sealing groove 10. The second housing 200 is provided with a second pressing portion 30 corresponding to the sealing groove 10. The sealing ring 40 is embedded in the sealing groove 10. In the fastened state, the second pressing portion 30 presses the sealing ring 40 against the first pressing portion 20, and the pressing surface of the first pressing portion 20 pressing against the sealing ring 40 is parallel to the pressing surface of the second pressing portion 30 pressing against the sealing ring 40.

[0041] Specifically, for the distribution box provided in this embodiment, the housing assembly seals the gap between the first housing 100 and the second housing 200 through the sealing ring 40. The sealing groove 10 is provided on the first housing 100, and the sealing ring 40 is embedded in the sealing groove 10. The first pressing portion 20 abuts against the sealing ring 40 inside the sealing groove 10. The second housing 200 is provided with a second pressing portion 30 corresponding to the sealing groove 10. When the first housing is fastened to the second housing 200, the second pressing portion 30 will press against the outside of the sealing ring 40, and the sealing ring 40 is jointly held by the first pressing portion 20 and the second pressing portion 30, thereby sealing the gap between the first housing 100 and the second housing 200. Since the pressing surfaces of the first pressing portion 20 and the second pressing portion 30 are parallel to each other, it can ensure that the sealing ring 40 effectively seals the gap between the first housing 100 and the second housing 200. Even if the body of the first housing 100 or the second housing 200 adopts a complex multi-curved surface structure, excellent sealing effect and waterproof performance can be maintained.

[0042] In this embodiment, as Figures 1-7 shown, the first housing 100 is set as a cover plate structure, and the material of the first housing 100 is a plastic material such as polyethylene, polypropylene, polycarbonate, or nylon. The second housing 200 is set as a box body structure with an opening 201 at one end. The second housing 200 is made of a metal material such as ferroalloy or aluminum alloy. The first housing 100 covers the opening 201, and the second pressing portion 30 is arranged around the opening 201. Specifically, since the first housing 100 is made of plastic material, complex appearance modeling design can be realized through processes such as injection molding and compression molding, and at the same time, it is ensured that the pressing surface of the first pressing portion 20 is set on the same plane to ensure the reliability of the seal.

[0043] Of course, in other embodiments of the present utility model, the first housing 100 may also be set as a box structure, and the second housing 200 may be set as a cover plate structure. That is, the sealing groove 10 is provided on one side of the box structure. The first housing 100 may also be made of a metal material, and the second housing 200 may also be made of a plastic material.

[0044] Exemplarily, as Figure 3 and Figure 7 shown, the first pressing portion 20 extends in the same direction as the sealing groove 10, and the distance between the first pressing portion 20 and the notch of the sealing groove 10 is equal everywhere. That is to say, the first pressing portion 20 is parallel to the plane where the notch of the sealing groove 10 is located. In the buckled state, the second pressing portion 30 extends into the sealing groove 10, and the depth of each position of the second pressing portion 30 extending into the sealing groove 10 is the same.

[0045] Exemplarily, as Figure 3 shown, both the first pressing portion 20 and the second pressing portion 30 are set as ribbed structures. The height direction of the first pressing portion 20 is the same as the groove depth direction of the sealing groove 10. In the buckled state, the first pressing portion 20 and the second pressing portion 30 are arranged oppositely. Specifically, the first pressing portion 20 is formed on the groove bottom of the sealing groove 10, and the outer end of the first pressing portion 20 extends towards the notch of the sealing groove 10. The second pressing portion 30 is completely arranged opposite to the first pressing portion 20, and there is no dislocation in the plane where the pressing surface is located, avoiding the sealing ring 40 from being damaged or displaced due to shear force.

[0046] Exemplarily, as Figure 7 shown, the first limiting ribs 101 and the second limiting ribs 102 are provided on the side surface of the first housing 100 facing the second housing 200. Both the first limiting ribs 101 and the second limiting ribs 102 are set as annular structures. Both the first limiting ribs 101 and the second limiting ribs 102 extend along the circumferential direction of the first housing 100 and are arranged at intervals inside and outside. The gap between the first limiting ribs 101 and the second limiting ribs 102 forms the sealing groove 10.

[0047] Exemplarily, as Figure 1 、 Figure 3 and Figure 8 shown, the second pressing portion 30 is provided at the edge of the opening 201 and is formed by a bending process. When processing and forming the second housing 200, first, a box structure is processed from a metal sheet by stretch forming or stamping, and then a locking platform 202 and the second pressing portion 30 are formed at one end of the opening 201 by a bending process. The locking platform 202 is parallel to the pressing surface, and the second pressing portion 30 is perpendicular to the pressing surface. The locking platform 202 is used for locking and connecting the first housing 100.

[0048] Exemplarily, as Figures 1-8As shown, a screw connection base 50 is provided on one of the first housing 100 and the second housing 200. A threaded hole is provided on the screw connection base 50. An installation through hole 60 is correspondingly provided on the other of the first housing 100 and the second housing 200. The first housing 100 and the second housing 200 are locked by a screw 70 that passes through the installation through hole 60 and is screwed to the screw connection base 50. In this embodiment, the locking platform 202 is wound around the outside of the second pressing portion 30. Along the extending direction of the locking platform 202, a plurality of screw connection bases 50 are spacedly arranged on the second housing 200. The screw connection bases 50 are connected to the locking platform 202 by press riveting. A plurality of installation through holes 60 are correspondingly provided on the first housing 100. The installation through holes 60 are provided outside the sealing groove 10. The first housing 100 and the second housing 200 are locked together by a plurality of screws 70 to ensure that each position of the sealing ring 40 is effectively pressed by the first pressing portion 20 and the second pressing portion 30 together.

[0049] Further, as Figure 3 shown, the installation through hole 60 is arranged in a counterbore structure. The end thereof facing away from the screw connection base 50 can accommodate the nut of the screw 70 to prevent the screw 70 from being exposed. A flat washer 71 and a spring washer 72 are arranged between the nut and the first housing 100. Both the flat washer 71 and the spring washer 72 are sleeved on the screw portion of the screw 70. The flat washer 71 abuts against the bottom of the counterbore. The spring washer 72 is located between the flat washer 71 and the nut. The nut presses the spring washer 72 and the flat washer 71 against the bottom of the counterbore to improve the locking stability of the screw 70.

[0050] Exemplarily, as Figure 5 shown, a plurality of reinforcing ribs 103 are further provided on the side surface of the first housing 100 facing the second housing 200. The plurality of reinforcing ribs 103 are arranged horizontally and vertically in a crisscross manner, and the plurality of reinforcing ribs 103 are integrally formed with the first housing 100. The function of the reinforcing ribs 103 is to improve the structural strength of the first housing 100.

[0051] Exemplarily, as Figure 3 、 Figure 4 and Figure 6 shown, a circumferential shielding portion 104 is provided around the peripheral edge of the first housing 100. The shielding portion 104 extends towards the second housing 200. The sealing ring 40 and the screw connection base 50 are both located inside it. The shielding portion 104 can shield the sealing structure and the locking structure between the first housing 100 and the second housing 200 from the outside, which not only improves the reliability of their sealed connection but also improves the aesthetic appearance.

[0052] Exemplarily, in the width direction of the sealing groove 10, an interference fit is provided between the sealing groove 10 and the sealing ring 40 so that the sealing ring 40 can block the gaps between it and the left and right side walls of the sealing groove 10.

[0053] Exemplarily, as Figure 3 andFigure 7 As shown, the sealing ring 40 is made of a water-resistant and corrosion-resistant plastic material and a highly elastic and wear-resistant rubber material, which can effectively resist the penetration and erosion of moisture. The cross-sectional shape of the sealing ring 40 is rectangular, and a telescopic hole 41 is provided in the sealing ring 40 to increase the elastic deformation amplitude of the sealing ring 40 when it is jointly pressed by the first pressing portion 20 and the second pressing portion 30.

[0054] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A housing component, characterized in that, Comprising: A first housing having a sealing groove extending circumferentially on a side surface thereof, and a first pressing portion protruding in the sealing groove; A sealing ring embedded in the sealing groove; A second housing capable of being fastened to the first housing to form a closed cavity, the second housing having a second pressing portion corresponding to the sealing groove, and in the fastened state, the second pressing portion presses the sealing ring against the first pressing portion, and the pressing surface of the first pressing portion pressing against the sealing ring is parallel to the pressing surface of the second pressing portion pressing against the sealing ring.

2. The housing assembly according to claim 1, wherein, The first pressing portion extends in the same direction as the sealing groove, and the distance between the first pressing portion and the notch of the sealing groove is equal everywhere.

3. The housing assembly according to claim 2, wherein, Both the first pressing portion and the second pressing portion are arranged in a rib-like structure, the height direction of the first pressing portion is the same as the depth direction of the sealing groove, and in the fastened state, the first pressing portion and the second pressing portion are arranged opposite to each other.

4. The housing assembly according to any one of claims 1-3, characterized in that, The first housing is arranged in a cover plate structure, the second housing is arranged in a box body structure with an opening at one end, the first housing covers the opening, and the second pressing portion is arranged around the opening.

5. The housing assembly according to claim 4, wherein, The material of the first housing is a plastic material; and / or The material of the second housing is a metal material.

6. The housing assembly according to claim 4, wherein, The second pressing portion is arranged at the edge of the opening, and the second pressing portion is formed by a bending process.

7. The housing assembly according to any one of claims 1-3, characterized in that, First limiting ribs and second limiting ribs are arranged on the side surface of the first housing facing the second housing, both the first limiting ribs and the second limiting ribs extend circumferentially along the first housing and are arranged at intervals inside and outside, and the gap between the first limiting ribs and the second limiting ribs forms the sealing groove.

8. The housing assembly according to any one of claims 1-3, characterized in that, A screw connection seat is arranged on one of the first housing and the second housing, a threaded hole is arranged on the screw connection seat, a mounting through hole is correspondingly arranged on the other of the first housing and the second housing, and the first housing and the second housing are locked by a screw passing through the mounting through hole and screwed with the screw connection seat.

9. The housing assembly according to claim 8, wherein, A locking platform is wound around the outside of the second pressing portion, along the extending direction of the locking platform, a plurality of the screw connection seats are arranged at intervals on the second housing, a plurality of the mounting through holes are correspondingly arranged on the first housing, and the mounting through holes are arranged outside the sealing groove.

10. The housing assembly according to any one of claims 1-3, characterized in that, A shielding portion is wound around the peripheral edge of the first housing, the shielding portion extends towards the second housing, and the shielding portion is used to shield the sealing groove and the sealing ring from the outside.

11. A distribution box, characterized in that, Comprising the housing assembly according to any one of claims 1-10 and an electrical component, and the electrical component is installed in the closed cavity.

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