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 provided with such a housing. It is aimed, in particular, at applications in the automotive field.

[0002] In this field, there are known cases accommodating a printed circuit board whose edges match an internal contour of a housing defined jointly by a body and a cover of the case. Furthermore, the sealing of the case is maintained thanks to a seal interposed between the body and the cover.

[0003] Although the board is held at various points, free portions of these edges are likely to vibrate and damage the seal by causing micro-cuts in the latter.

[0004] The invention aims to at least partially overcome the above drawbacks and to this end proposes 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 seal, said plate and said holding support(s) being arranged in said first housing, said seal being located between said first and second parts, said seal comprising one or more protrusions directed towards the inside of the first housing and pressing on said plate at a contour of said plate to apply said plate to said holding support(s).

[0005] By pressing on said plate, the protrusion(s) provided on the seal contribute to reinforcing the retention of said plate in the housing. In this way, the risks of vibrations of free edges of the plate are limited without having to multiply specific plate fixing members, such as screws or rivets. In addition, by pressing on the contour of the plate, the protrusions have a limited surface reinforcing the effectiveness of the retention.

[0006] According to various additional characteristics of the invention, which may be taken together or separately and which form as many embodiments of the invention: said protrusion(s) bear on said plate and said plate bears on the holding support(s) in bearing zones located in line with each other, said housing comprises one or more supports for fixing said plate, in particular along said contour of the plate, said holding support(s) and said fixing support(s) are located at a distance from each other, said protrusion(s) comprise one or more bosses for contact with said plate, said seal has an annular part sandwiched between the first and second parts, said protrusion(s) are located substantially in the same plane as said annular part, called the plane of the seal, said boss(es) deviate from said plane of the seal and have a vertex bearing on said plate, the plate is located in a plane parallel to the plane of the seal, called the plane of the plate, said plane of the seal and said plane of the plate are slightly offset from each other,said housing further comprises one or more positioning lugs for said seal and / or said plate, said seal and / or said plate comprise passage openings for the lug(s), one of the passage openings of the seal and one of the passage openings of the plate are aligned so that the same one of said lugs allows positioning of the seal and the plate, the passage opening(s) of said seal are located at the level of at least one of said protrusions, the or at least one of said protrusions have a free edge provided with a top, the or one of said openings of the seal and / or two of said bosses are provided at the level of at least one of said protrusions, called the mounting protrusion, the opening of the seal is located near said top of the mounting protrusion(s),said bosses provided at the level of said mounting protrusions are located along said free edge on either side of said corresponding light of the seal, said protrusions are two in number, arranged opposite each other on either side of said plate, the first part forms a body of the housing, the second part forms a cover of the housing, said holding and / or fixing support(s) are connected to the body, in particular made from the material of said body, said holding and / or fixing support(s) comprise a pin having a top in contact with the plate, said fixing support(s) comprise a pin and a nut bearing on said pin, said nut being in contact with said plate, said housing comprises first members for fixing said plate to said fixing support(s), said plate comprises first orifices for the passage of said first fixing members,the pin of said fixing support(s) comprises first bores cooperating with said first fixing members, said plate comprises two large faces opposite each other, said seal, in particular said bosses, bear against said plate by a first of said large faces, the other, called second, of said large faces bears against said holding and / or fixing support(s), the first and second parts are fixed to each other by sandwiching said seal, said housing comprises second members for fixing said cover to said body, said body comprises second bores cooperating with said second fixing members, said cover comprises second orifices for the passage of said second fixing members, said seal comprises third orifices for the passage of said second fixing members,each of said second and third passage orifices are aligned with one of said second bores so as to leave a passage for one of said second fixing members, the contour of the plate is free over at least part of said contour, in particular at the level of said protrusions, the contour of the plate fits 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 card, said housing comprises a second housing intended to accommodate an electric motor and / or a compression system.

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

[0008] The invention will be better understood, and other aims, details, characteristics and advantages thereof will appear more clearly during 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 appended schematic drawings among which: [ Fig 1 ] schematically illustrates in perspective an example of a box, in accordance with the invention, comprising a body and a cover; [ Fig 2 ] schematically illustrates in top view the housing of the figure 1 without its cover; [ Fig 3 ] schematically illustrates, partially, a sectional view along the section line illustrated III-III in figure 2 ; [ Fig 4 ] schematically illustrates in perspective a joint of the housing of the figure 1 , partially illustrated at a portion corresponding to the part of the housing illustrated in the figure 3 .

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

[0010] As shown in the figure 1 , the invention relates to a housing. It will find its applications, for example, in a motor vehicle as a compressor of a refrigerant fluid of a thermoregulation system of zones of the vehicle, such as a passenger compartment of the vehicle, and / or of components of the vehicle, such as an electrical energy storage device, an electric machine for motorizing the vehicle and / or an electronic device for controlling said electric machine. For this, said housing accommodates an electric motor and a compression system driven by said motor.

[0011] Said housing comprises first and second parts 2, 4 jointly defining a first housing, not visible in this figure. Here, the first part 2 forms a body of the housing and the second part 4 forms a cover of said housing.

[0012] In the intended application, said housing, for example said body, advantageously comprises a second housing 6 intended to accommodate said electric motor and / or said compression system, not illustrated. Said body also comprises inlet / outlet pipes 7 for the refrigerant fluid intended to enter said second housing 6, at low pressure, and to exit therefrom, at high pressure. Said second housing 6 is intended to be closed by another cover, not shown, of said housing.

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

[0014] Said housing further comprises a plate 8. Said plate 8 is arranged in said first housing 10. Said plate 8 is formed, for example, of a printed circuit board carrying 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 makes it possible to evacuate at least part of the heat released by said electronic components located in said first housing 10.

[0015] Said housing further comprises a seal 12, located between said first and second parts 2, 4, to ensure a sealed closure of said first housing 10. Said seal 12 comprises, for example, a metal core coated at least partially with an elastomeric material.

[0016] As shown in the figure 3 , said housing comprises one or more supports 14 for holding said plate 8. Said holding 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 inside 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 to said holding support or supports 14.

[0018] Thanks to said protrusions 22, the holding of the plate 8 is reinforced, which makes it possible to limit the risks of vibrations of the free edges of the plate 8 without having to multiply specific members for fixing the plate, such as screws or rivets. In addition, by pressing on the contour 24 of the plate 8, the protrusions 22 have a limited surface area. Indeed, it is understood that the said holding support(s) 14 are located along said contour 24 of the 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 clearance.

[0020] As shown in the figure 3 , said protrusion(s) 22 bear on said plate 8 and said plate 8 bears on the holding support(s) 14 in respective bearing zones.

[0021] Preferably, the support zone(s) of the plate 8 on the holding support(s) 14 and the support zone(s) of the protrusions 22 on the plate 8 are located in line with each other. The plate 8 is thus sandwiched between said protrusion(s) 22 and the holding support(s) 14.

[0022] In the illustrated embodiment, said housing comprises one or more fixing supports 14' for said plate 8. Said fixing support(s) 14' are located, in particular, along said contour 24 of the plate 8. Said housing comprises, for example, first fixing members 26 for said plate 8, such as a screw, cooperating with said fixing supports 14'. Said plate 8 comprises first orifices 30 for the passage of said first fixing members 26.

[0023] The said holding and / or fixing support(s) 14, 14' are here connected to the first part 2, in particular made from the material of the said part 2. The said holding and / or fixing support(s) 14, 14' comprise, for example, a pin 16, 16' having a top 18, 18' in contact with the plate 8. The top 18 of the pin 16 of the said holding support(s) 14 here forms the support zone of the plate 8 against the said holding support(s). The pin 18' of the said fixing support(s) 14' comprises first bores 32 cooperating with the said first fixing members 26.

[0024] Alternatively, not shown, said fixing support(s) 14' comprise a pin and a nut, bearing on said pin. Said nut is in contact with said plate. In other words, said plate bears on said nut. Said nut cooperates with said plate fixing members 8.

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

[0026] It is understood that the first and second parts 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 is best seen in the figure 4 , said protrusion(s) 22 comprise one or more bosses 34 for contact with said plate 8. Said bosses 34 make it easier to press said plate 8 against the holding support(s) 14.

[0028] Said seal 12 has an annular part 36, intended to be sandwiched between the first and second parts 2, 4. Said protrusion(s) 34 are located substantially in the same plane P as said annular part 36, called the plane of the seal. Said boss(es) 34 deviate, in particular perpendicularly, from said plane of the seal and have a top, intended to bear on said plate 8. The top of said boss(es) 34 here forms the bearing zone of the seal 12 against the plate 8.

[0029] This is illustrated in the figure 3 where it is noted 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, according to a gap corresponding to a height of said bosses 34.

[0030] Said plate 8 here comprises two large faces 52, 52' opposite one another. Said seal 12, in particular said bosses 34, bear against said plate 8 by a first 52 of said large faces and the other 52', called second, of said large faces bears against said holding support 14 and / or fixing support 14, 14'.

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

[0032] Even more advantageously, the passage openings 42 of the seal 12 and the passage openings 44 of the plate 8 are aligned two by two so that the same one of said lugs 40 allows positioning of the seal 12 and of the plate 8. At the time of assembly, it is thus possible to position both the plate 8 and the seal 12 using the same lug(s) 40.

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

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

[0035] If we refer again to the figure 4 , it can be seen that the protrusion 22 illustrated is the or one of said mounting protrusions. Indeed, it has the or one of the openings 42 of the seal 12. Said mounting protrusion here has a free edge 48 provided with a top 50. Said opening 42 of the seal 12 present at the level of said mounting protrusions is located near said top 50. Said bosses 34 are two in number and located along said free edge 48 on either side of said corresponding opening 42 of the seal 12, at the level of said mounting protrusion.

[0036] Furthermore, here, said housing comprises second fixing members, not shown, for said cover on said body, said body comprises second bores cooperating with said second fixing members. Said cover comprises second orifices for passage of said second fixing members.

[0037] As shown in the figure 2, Said seal 12 comprises third orifices 70 for passage of said second fixing members.

[0038] At least some of said second and third passage orifices, or even all of them, are aligned two by two with one of said second bores so as to leave a passage for one of said second fixing members.

[0039] In this figure, it can be seen that said protrusions 22 are two in number, arranged opposite each other on either side of said plate 8. Said fixing members 26 are also two in number, respectively located near one of said protrusions 22.

Claims

1. 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 holding supports (14) for said plate (8) and a seal (12), said plate (8) and said holding support(s) (14) being arranged in said first housing (10), said seal (12) being located between said first and second parts (2, 4), 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) (14).

2. Housing according to the preceding claim in which the said protrusion(s) (22) bear on the said plate (8) and the said plate (8) bears on the holding support(s) (14) in bearing zones located in line with each other.

3. Housing according to any one of the preceding claims wherein said housing comprises one or more fixing supports (14') for said plate (8), said holding support(s) (14) and said fixing support(s) (14') being located at a distance from each other.

4. Housing according to any one of the preceding claims in which said protrusion(s) (22) comprise one or more bosses (34) for contact with said plate (8).

5. Housing according to the preceding claim further comprising one or more lugs (40) for positioning said seal (22) and / or said plate (8), said seal (12) and / or said plate (8) comprise slots (42, 44) for the passage of the lug(s) (40), one of the slots (42) for the passage of the seal (12) and one of the slots (44) for the passage of the plate (8) being aligned so that the same one of said lugs (40) allows positioning of the seal (12) and of the plate (8).

6. Housing according to the preceding claim in which the light(s) (42) for passage of said seal (12) are located at the level of the or one of said protrusions (22), called the mounting protrusion.

7. Housing according to the preceding claim in which the or one of said lights (42) of the seal (12) and / or two of said bosses (34) are provided at the level of the or of said mounting protrusion.

8. Housing according to any one of the preceding claims in which the first part (2) forms a body of the housing, the second part (4) forms a cover of the housing, the said holding support(s) (14) being connected to the body.

9. Housing according to any one of the preceding claims in which said holding support(s) (14) comprise a pin (16) having a top (18) in contact with said plate (8).

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

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