CN215221329U - Shell assembly and power distribution unit - Google Patents

Abstract

The application provides a casing subassembly and power distribution unit, the casing subassembly includes: casing, sealing closure, support, first connecting piece and first sealing member, the casing has the opening, the opening runs through the both sides of mutually backing on the back of the body, the opening part is located to the sealing closure, the support set up in the casing deviates from one side of sealing closure, first sealing member seal set up in the casing with between the support, housing assembly has first through-hole, first through-hole runs through the casing the sealing closure reaches first sealing member, the support has first connecting hole, first connecting hole just right first through-hole, first connecting piece is worn to locate first through-hole with in the first connecting hole. The application provides a housing assembly has better sealed effect.

Description

Shell assembly and power distribution unit

Technical Field

The application relates to the technical field of sealing, in particular to a shell assembly and a power distribution unit.

Background

New energy host plants are rapidly developing, and the host plants have higher requirements on PDU (OBC + DC + power distribution). Because the fuse of distribution portion is higher at the fault rate in the in-service use, so require setting up the opening on the lid of PDU to the fuse is changed in the maintenance. The sealing is required to be involved in the opening, and the sealing effect in the conventional technology is poor, so that a structure with good sealing effect is required to be designed.

SUMMERY OF THE UTILITY MODEL

The application provides a casing subassembly and power distribution unit, casing subassembly has better sealed effect.

In a first aspect, the present application provides a housing assembly comprising: casing, sealing closure, support, first connecting piece and first sealing member, the casing has the opening, the opening runs through the both sides of mutually backing on the back of the body, the opening part is located to the sealing closure, the support set up in the casing deviates from one side of sealing closure, first sealing member seal set up in the casing with between the support, housing assembly has first through-hole, first through-hole runs through the casing the sealing closure reaches first sealing member, the support has first connecting hole, first connecting hole just right first through-hole, first connecting piece is worn to locate first through-hole with in the first connecting hole.

Wherein the housing assembly further comprises a second sealing member, and the second sealing member is connected between the housing and the sealing cover in a sealing manner.

The shell comprises a first limiting portion and a first body portion, the first body portion is provided with the opening, the first limiting portion is connected with the first body portion in a bent mode and arranged around the opening, and the second sealing element is sleeved on the periphery of the first limiting portion.

The sealing cover comprises a covering part, a side wall part and a connecting part, wherein the covering part is used for covering the opening, the side wall part is connected to the periphery of the covering part in a bending mode, the connecting part is connected to one end, far away from the covering part, of the side wall part in a bending mode, and the connecting part is used for being connected with the first body part of the shell.

The shell assembly is provided with a second through hole, the second through hole penetrates through the shell and the first sealing piece, the support is provided with a second connecting hole, the second connecting hole is opposite to the second through hole, the shell assembly further comprises a second connecting piece, and the second connecting piece is arranged in the second through hole and the second connecting hole in a penetrating mode.

The sealing cover is provided with a notch, the notch is communicated with the second through hole, and the second connecting piece is arranged in the notch.

Wherein, the second connecting piece is separated from the side wall of the notch.

The support comprises a second body part and a second limiting part, the second body part is used for being connected with the first connecting piece, the second limiting part is arranged on one side, facing the sealing cover, of the second body part in a protruding mode, and the first sealing element is arranged around the second limiting part.

Wherein the first connecting hole is a counter bore.

In a second aspect, the present application also provides a power distribution unit comprising a fuse and the above housing assembly, the fuse being disposed opposite an opening in the housing assembly.

The application provides a housing assembly includes casing, closing cap, support, first connecting piece and first sealing member, and wherein, the opening part on the casing is located to the closing cap, and first sealing member and support set up in the one side that the casing deviates from the closing cap, and first connecting piece then is used for linking together casing, closing cap, support and first sealing member. Because the connection effect of first connecting piece, make support cooperation casing coextrusion be in the first sealing member between the two, thereby make first sealing member seal the gap between support and the casing, even liquid enters into the seam between first connecting piece and the first perforation hole's the lateral wall, also can not pass through between first sealing member and the support, and further infiltration to the casing inside between first sealing member and the casing, consequently, this structure sets up the form and can plays fine water-proof effects, thereby avoid the inside electron device of casing subassembly to receive the influence.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a power distribution unit according to an embodiment of the present application.

Fig. 2 is a schematic view of a first viewing angle of a housing assembly according to an embodiment of the present disclosure.

Fig. 3 is a schematic sectional view a-a of the housing assembly shown in fig. 2.

Fig. 4 is a schematic diagram of a second viewing angle of the housing assembly according to the embodiment of the present application.

Fig. 5 is a schematic sectional view B-B of the housing assembly shown in fig. 4.

Description of numbering: the power distribution unit comprises a power distribution unit-1, a shell assembly-10, a fuse-20, a shell-110, a sealing cover-120, a support-130, a first connecting piece-140, a first sealing piece-150, a second sealing piece-160, a second connecting piece-170, a first limiting part-111, a first body part-112, a covering part-121, a side wall part-122, a connecting part-123, an arc part-124, a second body part-131, a second limiting part-132, an opening-A, a first through hole-B1, a second through hole-B2, a first connecting hole-C1, a second connecting hole-C2, a notch-D and an accommodating space-E.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments, in case at least two embodiments are combined together without contradiction.

Referring to fig. 1, the present application provides a Power Distribution Unit 1, where the Power Distribution Unit 1 (PDU) includes a fuse 20 and a housing assembly 10 described in any of the following embodiments. The fuse 20 is disposed within the housing assembly 10. In actual use, because the failure rate of the fuse 20 is high, an opening a is provided in the housing assembly 10, and the fuse 20 is disposed opposite to the opening a in the housing assembly 10, so that the fuse 20 can be repaired and replaced. The power distribution unit 1 may be used in the field of vehicles, but is not limited thereto.

The housing assembly 10 in the power distribution unit 1 provided in the above embodiment is described in detail below with reference to the drawings.

Referring to fig. 2 and 3, the present application further provides a housing assembly 10, where the housing assembly 10 includes: the sealing device comprises a shell 110, a sealing cover 120, a bracket 130, a first connecting piece 140 and a first sealing piece 150. The housing 110 includes an outer surface M1 exposed to the outside and an inner surface M2 facing away from the outer surface M1. The shell 110 has an opening a that extends through the outer surface M1 and the inner surface M2, i.e., the opening a extends through opposite sides of the shell 110. The sealing cover 120 is disposed at the opening a from the side of the housing 110 having the outer surface M1, that is, the sealing cover 120 covers the opening a from the outside of the housing 110 to isolate the inside of the housing 110 from the outside, so as to prevent external impurities, liquids (such as water, oil, etc.) and the like from entering the housing 110 and damaging the electronic devices inside the housing 110. The fuse 20 is disposed in the case 110 just above the opening a, and when the fuse 20 fails, the sealing cover 120 is removed from the case 110, so that the fuse 20 can be repaired and replaced through the opening a. The shape of the opening a may be, but is not limited to, circular, rectangular, square, oval, and the like.

The bracket 130 is disposed on a side of the casing 110 away from the sealing cover 120. The first sealing member 150 is sealingly disposed between the housing 110 and the bracket 130. The case assembly 10 has a first through hole B1, and the first through hole B1 penetrates the case 110, the flap 120, and the first seal 150. The bracket 130 has a first connection hole C1, the first connection hole C1 is opposite to the first through hole B1 and is communicated with the first through hole B1. The first connector 140 is inserted into the first through hole B1 and the first connection hole C1 to connect the sealing cover 120, the casing 110, the first sealing member 150, and the bracket 130 into a whole. The first sealing member 150 and the bracket 130 are both ring-shaped and are disposed around the opening a, and the ring-shaped is not only a circular ring, but also a rectangular ring, an elliptical ring, or the like. The first connecting member 140 may be, but is not limited to, a bolt, a screw, etc.

It will be appreciated that there must be a gap between the first connector 140 and the side wall of the first through hole B1, which provides a permeable condition for external liquid to enter the interior of the housing 110, thereby affecting the electronic components inside the housing 110. In this embodiment, the first sealing element 150 disposed in the housing assembly 10 can well solve the problem, specifically, by the connection function of the first connecting element 140, the bracket 130 cooperates with the housing 110 to press the first sealing element 150 therebetween, so that the first sealing element 150 seals a gap between the bracket 130 and the housing 110, in other words, one side of the first sealing element 150 is tightly attached to the surface of the bracket 130, and the other side of the first sealing element 150 is tightly attached to the surface of the housing 110. Even if the liquid enters the gap between the first connecting member 140 and the sidewall of the first through hole B1, the liquid cannot penetrate into the interior of the housing 110 through the gap between the first sealing member 150 and the bracket 130 and the gap between the first sealing member 150 and the housing 110, so that the structural configuration can achieve a good waterproof effect, thereby preventing the electronic components inside the housing assembly 10 from being affected.

The first sealing member 150 may be made of, but not limited to, a material having elasticity such as rubber, and the elasticity is a property that the first sealing member 150 can be restored to its original size and shape after being deformed. Alternatively, the first sealing member 150 has elasticity, and the first sealing member 150 is compressed by the bracket 130 and the housing 110 to be compressed.

Optionally, the first connection hole C1 is a counterbore, that is, the first connection hole C1 does not penetrate through the bracket 130. It can be understood that, if there is a gap between the first connecting member 140 and the side wall of the first through hole B1, the external liquid may flow into the first connecting hole C1 along the gap, and the first connecting hole C1 is designed as a counter bore, so that the external liquid can be prevented from flowing into the inside of the housing 110 through the first connecting hole C1, and thus, the design can improve the waterproof effect.

Optionally, the number of the first connecting pieces 140 is multiple, where the number of the multiple first connecting pieces is greater than or equal to two, and specifically, but not limited to, 2, 3, 5, 6, 8, and the like. A plurality of first connectors 140 are disposed around the opening a, so that the opening a can be well sealed in the circumferential direction.

Referring to fig. 3, the housing assembly 10 further includes a second annular sealing member 160, and the second annular sealing member 160 is disposed around the opening a and is sealingly connected between the housing 110 and the flap 120. The ring shape is not limited to a circular ring, and may be a rectangular ring, an elliptical ring, or the like. It can be understood that the connection function of the first connector 140 causes the sealing cover 120 to cooperate with the housing 110 to press the second sealing member 160 therebetween, so that the second sealing member 160 seals the gap between the sealing cover 120 and the housing 110, thereby preventing external liquid from entering the inner wall of the housing 110 through the opening a between the sealing cover 120 and the housing 110. The second sealing member 160 may be made of, but not limited to, a material having elasticity such as rubber, and the elasticity is a property that the second sealing member 160 can be restored to its original size and shape after being deformed. Alternatively, the second sealing member 160 has elasticity, and the second sealing member 160 is compressed by the sealing cover 120 and the case 110.

Referring to fig. 3, the housing 110 includes a first position-limiting portion 111 and a first body portion 112. The first body portion 112 has the opening a, i.e., the opening a is formed on the first body. The first position-limiting portion 111 is protruded at one side of the first body portion 112, and is bent and connected to the first body portion 112 and disposed around the opening a. The second sealing member 160 is sleeved on the periphery of the first position-limiting portion 111. It can be understood that the first position-limiting portion 111 can limit the second sealing member 160 to move in the Y-axis direction, so as to prevent the second sealing member 160 from falling off, and achieve continuous and effective sealing, and the first position-limiting portion 111 can also play a role in positioning during the installation of the second sealing member 160, so as to facilitate installation.

Optionally, the outer diameter of the first limiting portion 111 is larger than the radial dimension of the second sealing element 160 in a natural state, when the second sealing element 160 is sleeved on the outer periphery of the first limiting portion 111, the radial dimension of the second sealing element 160 is expanded, and the second sealing element 160 is tightly sleeved on the outer periphery of the first limiting portion 111, which is beneficial to improving the waterproof effect. The natural state is a state in which the second sealing member 160 is not yet sleeved on the outer periphery of the first position-limiting portion 111.

Referring to fig. 3, the sealing cover 120 includes a covering portion 121, a sidewall portion 122, and a connecting portion 123. The covering portion 121 is used to cover the opening a. The sidewall portion 122 is connected to the periphery of the covering portion 121 in a bending manner. The outer diameter of the sidewall 122 is greater than or equal to the outer diameter of the first position-limiting portion 111, and the orthographic projection of the first position-limiting portion 111 on the sidewall 122 at least partially falls within the range of the sidewall 122. The connecting portion 123 is connected to one end of the sidewall portion 122 away from the covering portion 121 in a bent manner. The connecting portion 123 is used for connecting the first body portion 112 of the housing 110. It is understood that the connection part 123 is in a state of abutting against the first body part 112 by the connection action of the first connector 140, and the connection part 123 and the first body part 112 in the abutting state can thereby have a waterproof function to some extent.

Optionally, the flap 120 further includes an arc portion 124, and the arc portion 124 is connected between the sidewall portion 122 and the connecting portion 123. The arc portion 124, the first position-limiting portion 111 and the first body portion 112 together enclose an accommodating space E. The accommodating space E is used for accommodating the second sealing member 160. The second sealing member 160 abuts against the arc-shaped portion 124, the first limiting portion 111 and the first body portion 112 at the same time. It can be understood that, with this arrangement, the second sealing element 160 can be well limited in the accommodating space E, so as to avoid falling off, and realize continuous and effective waterproofing.

Referring to fig. 3, the bracket 130 includes a second body 131 and a second position-limiting part 132. The second body portion 131 is used for connecting the first connector 140. The second position-limiting part 132 is disposed on a side of the second body 131 facing the sealing cover 120 and abuts against the housing 110. The first sealing member 150 is disposed around the second position-limiting portion 132. It is understood that the second stopper portion 132 may prevent the first seal member 150 from being shifted in the Y-axis direction, thereby facilitating the insertion of the first connector 140 into the first through hole B1. Moreover, the second position-limiting portion 132 can also play a role in positioning during the installation of the first sealing element 150, which is more convenient for installation.

Optionally, the outer diameter of the second limiting portion 132 is larger than the radial dimension of the first sealing element 150 in a natural state, when the first sealing element 150 is sleeved on the outer periphery of the second limiting portion 132, the radial dimension of the first sealing element 150 is expanded, and the first sealing element 150 is tightly sleeved on the outer periphery of the second limiting portion 132, which is beneficial to improving the waterproof effect. The natural state is a state in which the first sealing element 150 is not yet sleeved on the outer periphery of the second limiting portion 132.

Referring to fig. 4 and 5, the housing assembly 10 has a second through hole B2. The second penetration hole B2 penetrates the housing 110 and the first seal 150. The bracket 130 has a second coupling hole C2. The second connection hole C2 is opposite to the second through hole B2 and communicates with the second through hole B2. The housing assembly 10 also includes a second connector 170. The second connector 170 is inserted into the second through hole B2 and the second connection hole C2 to connect the housing 110, the first sealing member 150 and the bracket 130 together. The second connector 170 may be, but not limited to, a bolt, a screw, a bolt, and the like.

As can be seen from the previous embodiments, the first connector 140 is inserted into the first through hole B1 and the first connection hole C1, so as to integrally connect the sealing cover 120, the casing 110, the first sealing member 150 and the bracket 130. Therefore, when the sealing cover 120 needs to be detached from the housing 110, the first connector 140 only needs to be unscrewed, and the second connector 170 does not need to be unscrewed, and after the first connector 140 is unscrewed, the bracket 130 and the first sealing member 150 do not fall off from the housing 110 because the second connector 170 is not unscrewed, so that the bracket 130 and the first sealing member 150 can be ensured to be connected to the housing 110 after the sealing cover 120 is detached from the housing 110 by the second connector 170.

Optionally, the second connecting hole C2 on the bracket 130 is a blind hole, that is, the second connecting hole C2 does not penetrate through the bracket 130. It can be understood that, if a gap exists between the second connector 170 and the side wall of the second through hole B2, the external liquid may flow into the second connection hole C2 along the gap, and the second connection hole C2 is designed as a counter bore, so that the external liquid is prevented from flowing into the inside of the housing 110 through the second connection hole C2, and thus, the design can improve the waterproof effect.

Optionally, the number of the second connecting members 170 is multiple, where the number of the second connecting members is greater than or equal to two, and specifically, but not limited to, 2, 3, 5, 6, 8, and the like. The second connectors 170 are disposed around the opening a, so that the bracket 130 and the first sealing member 150 can be more firmly fixed to the housing 110 without falling off.

Referring to fig. 4, the connecting portion 123 of the sealing cover 120 has a notch D, and the notch D is communicated with the second through hole B2. The second connector 170 is disposed in the notch D. It will be appreciated that this arrangement makes it possible to design the dimension of the bracket 130 in the Y-axis direction to be equal or equivalent to the dimension of the connecting portion 123 in the Y-axis direction, thereby avoiding an oversize design of the bracket 130 in the Y-axis direction, and therefore, this configuration can save material, reduce weight, and make the arrangement more compact.

Referring to fig. 4 and 5, the second connector 170 is spaced apart from the sidewall of the gap D, in other words, the second connector 170 does not abut against the sidewall of the gap D, thereby facilitating the assembly and disassembly of the flap 120.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present application, and that such changes and modifications are also to be considered as within the scope of the present application.

Claims (10)

1. A housing assembly, comprising: casing, sealing closure, support, first connecting piece and first sealing member, the casing has the opening, the opening runs through the both sides of mutually backing on the back of the body, the opening part is located to the sealing closure, the support set up in the casing deviates from one side of sealing closure, first sealing member seal set up in the casing with between the support, housing assembly has first through-hole, first through-hole runs through the casing the sealing closure reaches first sealing member, the support has first connecting hole, first connecting hole just right first through-hole, first connecting piece is worn to locate first through-hole with in the first connecting hole.

2. The housing assembly of claim 1, further comprising a second seal member sealingly coupled between the housing and the flap.

3. The housing assembly of claim 2, wherein the housing includes a first position-limiting portion and a first body portion, the first body portion has the opening, the first position-limiting portion is connected to the first body portion in a bent manner and disposed around the opening, and the second sealing element is disposed around an outer periphery of the first position-limiting portion.

4. The housing assembly of claim 3, wherein the flap includes a cover portion for covering the opening, a sidewall portion bent and connected to a peripheral edge of the cover portion, and a connecting portion bent and connected to an end of the sidewall portion away from the cover portion, the connecting portion being connected to the first body portion of the housing.

5. The housing assembly of claim 1, wherein the housing assembly has a second through-hole extending through the housing and the first sealing member, the bracket has a second connecting hole aligned with the second through-hole, and the housing assembly further comprises a second connecting member disposed through the second through-hole and the second connecting hole.

6. The housing assembly of claim 5, wherein the sealing cap has a notch, the notch communicates with the second through hole, and the second connecting member is disposed in the notch.

7. The housing assembly of claim 6 wherein said second connector is spaced from a side wall of said gap.

8. The housing assembly of claim 1, wherein the bracket includes a second body portion and a second retention portion, the second body portion is configured to couple to the first connector, the second retention portion is disposed to protrude from a side of the second body portion facing the flap, and the first sealing element is disposed around the second retention portion.

9. The housing assembly of any of claims 1-8, wherein the first connection hole is a counterbore.

10. A power distribution unit comprising a housing assembly as claimed in any one of claims 1 to 9 and a fuse disposed against an opening in the housing assembly.

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