Housing and compressor provided with such a housing, in particular for motor vehicle

Abstract

Housing, in particular a compressor housing, said housing comprising first and second parts (2) jointly defining a first housing (10), said housing further comprising a plate (8), one or more holding supports (14) for said plate (8) and a seal (12), said plate (8) and said holding support(s) being arranged in said first housing (10), said seal (12) being located between said first and second parts (2), said seal (12) comprising one or more protrusions (22) directed towards the inside of the first housing (10) and pressing on said plate (8) at a contour (24) of said plate (8) to apply said plate (8) to said holding support(s).

Description

[0001] The invention relates to a housing and a compressor equipped with such a housing. It is aimed, in particular, at applications in the automotive field.

[0002] In this field, enclosures housing a printed circuit board are known, with edges conforming to the inner contour of a housing defined jointly by the body and lid of the enclosure. Furthermore, the enclosure's watertightness is maintained by a gasket interposed between the body and the lid.

[0003] Although the card is held in place at various points, loose portions of these edges are susceptible to vibration and damage to the seal, causing micro-tears in the seal. A compressor housing is known as DE102015 116052.

[0004] The invention aims to overcome at least in part the previous drawbacks and proposes for this purpose a housing, in particular a compressor housing, said housing comprising first and second parts jointly defining a first housing, said housing further comprising a plate, one or more supports for holding said plate and a sealing gasket, said plate and said support(s) being arranged in said first housing, said sealing gasket being located between said first and second parts, said sealing gasket comprising one or more protrusions directed towards the inside of the first housing and pressing on said plate at the level of a contour of said plate to apply said plate to said support(s).

[0005] By pressing on the plate, the protrusions on the gasket help to secure the plate within the housing. This reduces the risk of vibration at the plate's free edges without requiring additional fasteners such as screws or rivets. Furthermore, the limited surface area of ​​the protrusions on the plate's perimeter further enhances the secure fit.

[0006] According to various additional features of the invention, which may be taken together or separately and which constitute so many embodiments of the invention: said protrusions bear on said plate and said plate bears on the retaining support(s) in bearing areas located directly above each other, said housing includes one or more fixing supports for said plate, in particular along said contour of the plate, said retaining support(s) and said fixing support(s) are located at a distance from each other, said protrusions include one or more bosses in contact with said plate, said seal has an annular portion sandwiched between the first and second parts, said protrusions are located substantially in the same plane as said annular portion, said plane of the seal, said boss(es) deviate from said plane of the seal and have an apex bearing on said plate, the plate is located in a plane parallel to the plane of the seal, said plane of the plate, said plane of the seal and said plane of the plate are slightly offset from each other,said housing further includes one or more positioning lugs for said seal and / or said plate, said seal and / or said plate include passage slots for the lug(s), one of the passage slots for the seal and one of the passage slots for the plate are aligned so that the same lug allows positioning of the seal and the plate, the passage slot(s) for said seal are located at the level of one or more of said protrusions, one or more of said protrusions have a free edge with a peak, one or more of said seal passages and / or two of said bosses are provided at the level of one or more of said protrusions, said mounting protrusion, the seal passage is located near said peak of the mounting protrusion(s),The said bosses provided at the level of the said mounting protrusions are located along the said free edge on either side of the said corresponding opening of the joint; the said protrusions are two in number, arranged oppositely on either side of the said plate; the first piece forms a body of the housing, the second piece forms a cover of the housing; the said retaining and / or fixing supports are linked to the body, notably made from the material of said body; the said retaining and / or fixing supports include a pin having a vertex in contact with the plate; the said fixing supports include a pin and a nut bearing on said pin, said nut being in contact with said plate; said housing includes first fixing elements for said plate on the said fixing supports; said plate includes first passage holes for said first fixing elements.The pin of said mounting support(s) includes first bores cooperating with said first fastening members; said plate includes two large faces opposed to each other; said seal, in particular said bosses, bears against said plate by a first of said large faces; the other, said second, of said large faces bears against said retaining and / or mounting support(s); the first and second parts are fixed to each other by sandwiching said seal; said housing includes second fastening members for said cover on said body; said body includes second bores cooperating with said second fastening members; said cover includes second passage holes for said second fastening members; said seal includes third passage holes for said second fastening members.Each of the second and third passage holes is aligned with one of the second bores so as to allow passage for one of the second fastening members; the contour of the plate is free over at least a part of said contour, in particular at the level of said protrusions; the contour of the plate fits against a wall of said housing, with a slight clearance; said seal comprises a metal core coated at least partially with an elastomeric material; said plate is formed by a printed circuit board; said housing comprises a second compartment intended to accommodate an electric motor and / or a compression system.

[0007] The invention also relates to a compressor comprising a housing as described above.

[0008] The invention will be better understood, and other objects, details, features and advantages thereof will become more apparent in the course of the detailed explanatory description which follows, of at least one embodiment of the invention given by way of purely illustrative and non-limiting example, with reference to the accompanying schematic drawings, among which: [ Fig 1 ] schematically illustrates in perspective an example of a box, according to the invention, comprising a body and a lid; [ Fig 2 ] schematically illustrates, from a top view, the casing of the figure 1 without its lid; Fig 3 ] schematically illustrates, partially, a cross-sectional view along the section line illustrated III-III in the figure 2 ; Fig 4 ] schematically illustrates in perspective a seal of the housing of the figure 1 , partially illustrated at the level of a portion corresponding to the part of the case illustrated in the figure 3 .

[0009] It should first be noted that the terms "first", "second", "third", ... are only used to distinguish the components concerned from each other and do not imply any order or possible importance of said components.

[0010] As illustrated in the figure 1 The invention relates to a housing. Its applications include, for example, in a motor vehicle as a compressor for a refrigerant fluid in a vehicle temperature control system, such as for a vehicle passenger compartment, and / or for vehicle components, such as an electrical energy storage device, an electric motor, and / or an electronic control device for said electric motor. For this purpose, the housing accommodates an electric motor and a compression system driven by said motor.

[0011] The said housing comprises first and second parts 2 and 4, which together define a first compartment, not visible in this figure. Here, the first part 2 forms the body of the housing and the second part 4 forms a lid of said housing.

[0012] In the intended application, the housing, for example, the body, advantageously includes a second compartment 6 for housing the electric motor and / or the compression system, not shown. The body further includes inlet / outlet tubes 7 for the refrigerant intended to enter the second compartment 6 at low pressure and exit it at high pressure. The second compartment 6 is intended to be closed by another cover, not shown, of the housing.

[0013] As illustrated in the figure 2 , said first piece 2 includes an edge 20 peripherally delimiting said first housing, marked 10 and this time visible, the cover having been removed in this figure.

[0014] The said housing further includes a plate 8. Said plate 8 is disposed in said first housing 10. Said plate 8 is formed, for example, of a printed circuit board bearing various electronic components used, in particular, for controlling the drive motor located in said second housing 6. A bottom of the first housing 10 advantageously forms a partition separating the first and second housings 6, 10. Said second housing 6 is preferably configured so that the refrigerant circulating in said second housing 6 is in contact with said partition, which allows at least part of the heat released by said electronic components located in said first housing 10 to be evacuated.

[0015] The said housing further includes a sealing gasket 12, located between the said first and second parts 2, 4, to ensure a watertight closure of the said first housing 10. The said gasket 12 includes, for example, a metal core coated at least partially with an elastomeric material.

[0016] As illustrated in the figure 3 said housing includes one or more supports 14 for retaining said plate 8. The said retaining support(s) 14 are arranged in said first housing 10.

[0017] If we refer again to the figure 2 , it is noted that, according to the invention, said sealing joint 12 comprises one or more protrusions 22, here two, directed towards the interior of the first housing 10. In addition, said protrusion or protrusions 22 press on said plate 8 at the level of a contour 24 of said plate 8 to apply said plate 8 onto said retaining supports 14.

[0018] Thanks to the aforementioned protrusions 22, the retention of plate 8 is reinforced, which limits the risk of vibration of the free edges of plate 8 without requiring multiple specific plate fastening elements, such as screws or rivets. Furthermore, by pressing on the contour 24 of plate 8, the protrusions 22 present a limited surface area. Indeed, it is understood that the aforementioned support(s) 14 are located along the contour 24 of plate 8.

[0019] Advantageously, the contour 24 of the plate 8 is free over at least part of said contour 24, in particular at the level of said protrusions 22. Here, the contour 24 of the plate 8 is free over its entirety and / or fits a wall 28 of said first housing 10, with a slight play.

[0020] As illustrated in the figure 3 , the said protrusions 22 bear on said plate 8 and said plate 8 bears on the support(s) 14 in respective support areas.

[0021] Preferably, the bearing area(s) of plate 8 on the support(s) 14 and the bearing area(s) of the protrusions 22 on plate 8 are located directly above each other. Plate 8 is thus sandwiched between said protrusions 22 and the support(s) 14.

[0022] In the illustrated embodiment, the housing includes one or more mounting brackets 14' for the plate 8. The mounting bracket(s) 14' are located, in particular, along the contour 24 of the plate 8. The housing includes, for example, first fastening elements 26 for the plate 8, such as a screw, cooperating with the mounting bracket(s) 14'. The plate 8 includes first openings 30 for the passage of the first fastening elements 26.

[0023] The support(s) 14, 14' are here linked to the first part 2, notably formed from the material of said part 2. The support(s) 14, 14' include, for example, a pin 16, 16' having a vertex 18, 18' in contact with the plate 8. The vertex 18 of the pin 16 of the support(s) 14 forms the bearing area of ​​the plate 8 against the support(s). The pin 18' of the mounting support(s) 14' includes first bores 32 cooperating with the first mounting elements 26.

[0024] Alternatively, and not shown, the said mounting bracket(s) 14' comprise a pin and a nut, bearing against said pin. Said nut is in contact with said plate. In other words, said plate bears against said nut. Said nut cooperates with said plate fastening elements 8.

[0025] Preferably, the said support bracket(s) 14 and the said fixing bracket(s) 14' are located at a distance from each other.

[0026] It is understood that the first and second pieces 2, 4 are fixed to each other by sandwiching said joint 12 but, except locally, not said plate 8 whose contour 24, as already said, remains preferentially free.

[0027] As this is more visible to the figure 4 , the said protrusions 22 include one or more bosses 34 for contact with said plate 8. Said bosses 34 facilitate the support of said plate 8 against the retaining support(s) 14.

[0028] The joint 12 has an annular portion 36, intended to be sandwiched between the first and second parts 2 and 4. The protrusions 34 are located substantially in the same plane P as the annular portion 36, referred to as the joint plane. The bosses 34 extend outward, notably perpendicularly, from the joint plane and have a summit intended to bear against the plate 8. The summit of the bosses 34 forms the bearing surface of the joint 12 against the plate 8.

[0029] This is illustrated in the figure 3 where it is observed that the plate 8 is located in a plane P' parallel to the plane of the joint, called the plane of the plate. Said plane P of the joint and said plane P' of the plate are slightly offset from each other in the direction perpendicular to said planes, by a distance corresponding to a height of said bosses 34.

[0030] The said plate 8 here comprises two large faces 52, 52' opposed to each other. The said joint 12, in particular the said bosses 34, are supported against the said plate 8 by a first 52 of the said large faces and the other 52', said second, of the said large faces is supported against the said retaining support 14 and / or fixing support 14, 14'.

[0031] Advantageously, said housing further includes one or more lugs 40 for positioning said seal 12 and / or said plate 8. Said seal 12 and / or said plate 8 include openings 42, 44 for the passage of the lug(s) 40.

[0032] Even more advantageously, the passage lights 42 for the seal 12 and the passage lights 44 for the plate 8 are aligned in pairs so that the same lugs 40 allow positioning of the seal 12 and the plate 8. During assembly, it is therefore possible to position both the plate 8 and the seal 12 using the same lug(s) 40.

[0033] The passage opening(s) 42 of said seal 12 are preferably located at the level of the or at least one of said protrusions 22, referred to as the mounting protrusion. In other words, the said lug(s) pass through said seal 12 at the level of said protrusion(s) 12. The said lug(s) 40 are positioned in specific bores 46 formed in the retaining support(s) 14.

[0034] According to the illustrated embodiment, said cover includes a peripheral skirt 60 intended to form a compression foot of the seal 12 and / or a point thickness of material 62, to accommodate said lug 40 at an end of said lug 40 opposite to that cooperating with the corresponding retaining support 14.

[0035] If we refer again to the figure 4 It can be seen that the illustrated protrusion 22 is one of the aforementioned mounting protrusions. Indeed, it presents one of the openings 42 of the joint 12. The said mounting protrusion has a free edge 48 with a peak 50. The opening 42 of the joint 12, present at the level of the said mounting protrusion, is located near the peak 50. The two bosses 34 are located along the free edge 48 on either side of the corresponding opening 42 of the joint 12, at the level of the said mounting protrusion.

[0036] Furthermore, here, the said housing includes secondary fastening elements, not shown, for the said cover on the said body. The said body includes secondary bores cooperating with said secondary fastening elements. The said cover includes secondary passageways for said secondary fastening elements.

[0037] As illustrated in the figure 2, Said joint 12 includes third orifices 70 for the passage of said second fixing members.

[0038] Some or at least some of the said second and third passage orifices, or even all of them, are aligned in pairs with one of the said second bores so as to leave a passage for one of the said second fixing members.

[0039] From this figure, we can see that the said protrusions 22 are two in number, arranged oppositely on either side of the said plate 8. The said fixing members 26 are also two in number, respectively located near one of the said protrusions 22.

Claims

1. A housing, in particular a compressor housing, said housing comprising first and second parts (2, 4) jointly defining a first housing (10), said housing further comprising a plate (8), one or more support members (14) for said plate (8) and a sealing gasket (12), said plate (8) and said one or more support members (14) being disposed in said first housing (10), said sealing gasket (12) being located between said first and second parts (2, 4), said sealing gasket (12) comprising one or more protrusions (22) directed towards the inside of the first housing (10) and characterized in that the protrusions press against said plate (8) at a contour (24) of said plate (8) to apply said plate (8) onto said one or more support members (14).

2. The housing according to the preceding claim, wherein said one or more protrusions (22) press against said plate (8) and said plate (8) presses against the one or more support members (14) in support zones located directly opposite one another.

3. The housing according to any one of the preceding claims, wherein said housing comprises one or more fastening members (14') for said plate (8), said one or more support members (14) and said one or more fastening members (14') being located at a distance from one another.

4. The housing according to any one of the preceding claims, wherein said one or more protrusions (22) comprise one or more bosses (34) for contact with said plate (8).

5. The housing according to the preceding claim, further comprising one or more positioning pins (40) for said gasket (12) and / or said plate (8), said gasket (12) and / or said plate (8) comprise passage openings (42, 44) for the one or more pins (40), one of the passage openings (42) of the gasket (12) and one of the passage openings (44) of the plate (8) being aligned such that a same one of said pins (40) allows for the positioning of the gasket (12) and the plate (8).

6. The housing according to the preceding claim, wherein the one or more passage openings (42) of said gasket (12) are located at the level of the or one of said protrusions (22), called a mounting protrusion.

7. The housing according to the preceding claim, wherein the or one of said openings (42) of the gasket (12) and / or two of said bosses (34) are provided at the level of the or said mounting protrusion.

8. The housing according to any one of the preceding claims, wherein the first part (2) forms a body of the housing, the second part (4) forms a cover of the housing, the one or more support members (14) being linked to the body.

9. The housing according to any one of the preceding claims, wherein said one or more support members (14) comprise a pin (16) having a summit (18) in contact with said plate (8).

10. A compressor comprising a housing according to any one of the preceding claims.

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