CN212250467U - Connection structure of electric compressor shell and electric compressor - Google Patents
Connection structure of electric compressor shell and electric compressor Download PDFInfo
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- CN212250467U CN212250467U CN202020309981.9U CN202020309981U CN212250467U CN 212250467 U CN212250467 U CN 212250467U CN 202020309981 U CN202020309981 U CN 202020309981U CN 212250467 U CN212250467 U CN 212250467U
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- motor
- intermediate body
- rear cover
- compressor
- casing
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Abstract
The utility model relates to a compressor technical field discloses a connection structure and motor compressor of motor compressor casing. The utility model provides a connection structure of motor compressor casing, is applied to motor compressor, and motor compressor is equipped with at least one first connecting piece respectively including motor casing, midbody and the back lid that connects gradually between midbody and motor casing and the back lid, the one end and the midbody butt of first connecting piece, the other end and motor casing or back lid butt, and the material of first connecting piece is electrically conductive material. The utility model provides a connection structure of motor compressor casing makes between motor casing and back lid and the midbody through the first connecting piece butt that has electric conductivity, controls the resistance value between midbody that is in unsettled state with motor compressor and adjacent motor casing and the back lid below 10 milliohms, has satisfied the requirement of motor compressor equipotential, has reduced the risk that motor compressor electrocuted.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to a connection structure and motor compressor of motor compressor casing.
Background
The electric compressor assembly comprises a compressor mechanical part and a driving controller part, wherein the compressor mechanical part is a scroll compressor, and the driving controller is a device which is connected with a main power supply of a vehicle and controls energy transmission and conversion between a direct current power supply and the electric compressor.
A generally used housing of a motor-driven compressor for a vehicle is composed of a plurality of cases. In order to prevent the leakage of the electric compressor, a plurality of shells are sealed by sealing gaskets, and the shells are connected by screws. In order to prevent electric shock, the electric compressor requires equipotential between the casings, i.e., equipotential. If two test points in a live line are selected and no voltage, i.e. no potential difference, is detected between them, the two test points are considered equipotential and have no resistance between them. According to the requirements of related technical standards, the resistance value between the shells of the electric compressors is required to be less than 10 milliohms, and the shells of the electric compressors in the state can meet the equipotential requirement, so that the electric shock risk of the electric compressors is greatly reduced, and the safety requirement of vehicles is met. Although the connection between the housings of the electric compressor by the screws plays a role of conduction, the resistance between the housings is low, and the potential difference is reduced. However, when the plurality of casings are connected by the long through screws, the casing in the middle is in a suspended state, and the casing is sealed with the casings adjacent to the left and right sides by the gaskets made of non-metal insulating materials such as rubber and asbestos, so that the resistance between the casing in the middle and the casings on the left and right sides is large, and the risk of electric shock of the electric compressor is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a connection structure and electric compressor of electric compressor casing makes the resistance value effective control between each casing of electric compressor in safety range, has reduced the risk of electric shock.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a connection structure of motor compressor casing, is applied to on the motor compressor, the motor compressor includes a plurality of motor casing, midbody and the back lid that connect gradually, the midbody with motor casing with be equipped with at least one first connecting piece between the back lid respectively, the one end of first connecting piece with midbody butt, the other end with motor casing or back lid butt, just the material of first connecting piece is electrically conductive material.
Preferably, sealing elements are arranged between the intermediate body and the motor shell and between the intermediate body and the rear cover, connecting holes are formed in the motor shell and the rear cover and in the corresponding sealing elements, one end of the first connecting piece is arranged in the connecting hole of the motor shell or the rear cover, and the other end of the first connecting piece penetrates through the connecting hole of the sealing element and abuts against the surface of the intermediate body.
Preferably, one end face of the first connecting piece is a plane, and the other end of the first connecting piece is provided with a conical angle, and the conical angle abuts against the surface of the intermediate body and enables the surface of the intermediate body to generate an indentation.
Preferably, both ends of the first connecting piece are provided with conical angles, one of the conical angles abuts against the motor shell or the rear cover, the other conical angle abuts against the intermediate body, and the surface of the intermediate body is indented.
Preferably, a conical hole bottom matched with the conical angle is arranged in the connecting hole of the motor shell or the rear cover, and the conical angle at one end of the first connecting piece is arranged in the conical hole bottom.
Preferably, a plurality of the first connecting pieces are arranged between the motor housing and/or the rear cover and the intermediate body along the circumferential direction.
Preferably, the motor housing, the intermediate body and the rear cover are connected through a second connecting piece, one end of the second connecting piece penetrates through the rear cover, the intermediate body and the motor housing in sequence, and the second connecting piece is made of a conductive material.
Preferably, the second connecting member includes a screw, and one end of the screw penetrates the rear cover, the intermediate body, and the motor housing in this order.
Preferably, the material of the first connecting piece is conductive metal.
A motor compressor comprises the connecting structure of the motor compressor shell.
The utility model has the advantages that:
the utility model provides a connection structure of motor compressor casing makes between midbody and motor casing and the hou gai through the first connecting piece butt that has electric conductivity, controls the resistance value between middle casing that is in unsettled state and adjacent motor casing and the hou gai below 10 milliohms with motor compressor, has satisfied the requirement of motor compressor equipotential, has reduced the risk that motor compressor electrocuted.
Drawings
Fig. 1 is a schematic view of an overall structure of an electric compressor according to an embodiment of the present invention;
fig. 2 is a schematic view of a partial structure of an electric compressor according to an embodiment of the present invention;
fig. 3 is a first structural schematic diagram of a first connecting member according to an embodiment of the present invention;
fig. 4 is a second structural schematic diagram of the first connecting member according to the embodiment of the present invention.
In the figure:
1. a motor housing;
2. a first connecting member; 21. a conical angle;
3. a seal member;
4. a second connecting member;
5. an intermediate;
6. and (7) a rear cover.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Among the prior art, electric compressor comprises a plurality of casings, through a screw through connection between a plurality of casings, though the connection through the screw switches on between electric compressor's the casing, make the resistance value between the casing lower, the potential difference has been reduced, but a screw runs through all casings and can make the casing of middle part be in unsettled state, still be equipped with insulating sealing gasket between the casing simultaneously, above-mentioned factor can lead to the casing of middle part and control the resistance between the casing on both sides great, the risk that electric compressor electrocuted has been improved. Based on this, the present embodiment provides a motor-driven compressor, which has a connection structure of the motor-driven compressor housing, and solves the above problems, so that the resistance value between the housings of the motor-driven compressor is effectively controlled within a safe range, and the risk of electric shock is reduced.
Specifically, as shown in fig. 1 and 2, the electric compressor includes a motor housing 1, an intermediate body 5, and a rear cover 6, which are sequentially connected, at least one first connecting member 2 is respectively disposed between the intermediate body 5 and the motor housing 1 and the rear cover 6, one end of the first connecting member 2 abuts against the intermediate body 5, the other end abuts against the motor housing 1 or the rear cover 6, and the first connecting member 2 is made of a conductive material. The intermediate body 5 is abutted with the motor shell 1 and the rear cover 6 through the first connecting piece 2 with conductive performance, the resistance value between the intermediate body 5 in a suspension state of the electric compressor and the adjacent motor shell 1 and the adjacent rear cover 6 is controlled to be below 10 milliohms, the requirement of equipotential of the electric compressor is met, and the risk of electric shock of the electric compressor is reduced.
In the present embodiment, the sealing members 3 are disposed between the intermediate body 5 and the motor housing 1 and the rear cover 6, the sealing members 3 are used for sealing, and the material of the sealing members 3 is usually a non-metal insulating material such as rubber and asbestos, which results in a large resistance value between the intermediate body 5 and the motor housing 1 and the rear cover 6. The intermediate 5 is connected with the motor shell 1 and the rear cover 6 through the second connecting piece 4, one end of the second connecting piece 4 penetrates through the rear cover 6, the intermediate 5 and the motor shell 1 in sequence, so that the motor shell 1, the intermediate 5 and the rear cover 6 are connected with each other, and the second connecting piece 4 is made of a conductive material. The second connection member 4 conducts the motor housing 1, the intermediate body 5, and the rear cover 6, and reduces the resistance value between the intermediate body 5 and the motor housing 1 and the rear cover 6, that is, the potential difference between the intermediate body 5 and the motor housing 1 and the rear cover 6. Further, the second connecting piece 4 comprises a screw, one end of the screw penetrates through the motor shell 1, the intermediate body 5 and the rear cover 6 in sequence, the connecting structure is simple, and the production cost is low.
Use a screw through connection motor casing 1, midbody 5 and back lid 6, lead to midbody 5 unsettled, have the space between midbody 5 and the screw, and then make the effect variation that switches on between motor casing 1, midbody 5 and the back lid 6, improved the risk of electrocuteeing, consequently, set up first connecting piece 2 between midbody 5 and motor casing 1 and back lid 6 and solved above-mentioned problem. In this embodiment, with reference to fig. 2, the motor housing 1 and the rear cover 6 and the corresponding sealing element 3 are both provided with a connecting hole, one end of the first connecting piece 2 is placed in the connecting hole of the motor housing 1 or the rear cover 6, the end surface of the first connecting piece 2 abuts against the bottom of the connecting hole, and the other end of the first connecting piece 2 penetrates through the connecting hole of the sealing element 3 and abuts against the surface of the intermediate body 5. Realized motor casing 1 or back lid 6 and the stable on-state connection of midbody 5, made first connecting piece 2 and midbody 5 butt simultaneously, place first connecting piece 2 in the connecting hole of motor casing 1 or back lid 6 can, easy to assemble has improved assembly efficiency. In the embodiment, the existing hole on the motor shell 1 or the rear cover 6 is used as the connecting hole for placing the first connecting piece 2, so that the processing technology is simplified, and the production cost is reduced. In other embodiments, the motor housing 1 or the rear cover 6 and the intermediate body 5 may further be respectively provided with a connecting hole, so that both ends of the first connecting member 2 are disposed in the connecting hole of the motor housing 1 or the rear cover 6 and the intermediate body 5, and both ends of the first connecting member 2 abut against the bottom of the connecting hole, thereby improving the stability and the conductivity of the connection between the motor housing 1 or the rear cover 6 and the intermediate body 5.
In the present embodiment, the plurality of first connecting members 2 are circumferentially disposed between the motor housing 1 and/or the rear cover 6 and the intermediate body 5, so that the intermediate body 5 is respectively connected with the motor housing 1 and the rear cover 6, the conductivity of the intermediate body 5 with the motor housing 1 and the rear cover 6 is improved, and the resistance between the intermediate body 5 and the motor housing 1 and the rear cover 6 is reduced.
In the present embodiment, as shown in fig. 3, one end surface of the first connecting member 2 is a plane, the other end of the first connecting member 2 is provided with a taper angle 21, and the taper angle 21 and the surface of the intermediate body 5 are indented. When the first connecting piece 2 is installed in the connecting hole of the motor shell 1 or the rear cover 6, one end of the first connecting piece 2 with the cone angle 21 penetrates through the connecting hole of the sealing piece 3 to be abutted against the surface of the intermediate body 5, when the motor shell 1, the intermediate body 5 and the rear cover 6 are connected through the second connecting piece 4, the cone angle 21 is abutted against the surface of the intermediate body 5, and an indentation is generated on the surface of the intermediate body 5, so that the position of the first connecting piece 2 is fixed, the two ends of the first connecting piece 2 can be respectively in full contact with the motor shell 1 or the rear cover 6 and the intermediate body 5, and the stability of the conductivity is improved.
In another embodiment, as shown in fig. 4, the two ends of the first connecting member 2 are provided with conical angles 21, one conical angle 21 abuts against the motor housing 1 or the rear cover 6, the other conical angle 21 abuts against the intermediate body 5, and indentations are generated on the surface of the intermediate body 5, and the position of the first connecting member 2 is fixed, so that the two ends of the first connecting member 2 are respectively and sufficiently contacted with the motor housing 1 or the rear cover 6 and the intermediate body 5. Preferably, the connecting hole of the motor housing 1 or the rear cover 6 is provided with a conical hole bottom matched with the conical angle 21, the conical angle 21 at one end of the first connecting piece 2 is arranged at the conical hole bottom, the contact area of the first connecting piece 2 and the motor housing 1 or the rear cover 6 is increased, and the conical angle 21 at the other end of the first connecting piece 2 is abutted to the surface of the intermediate body 5. When the motor shell 1, the rear cover 6 and the intermediate body 5 are connected through the second connecting piece 4, the conical angle 21 is attached to the bottom of the conical hole of the motor shell 1 or the rear cover 6, the conical angle 21 enables the surface of the intermediate body 5 to generate an indentation, the two ends of the first connecting piece 2 can be ensured to be in full contact with the motor shell 1 or the rear cover 6 and the intermediate body 5 respectively, and the stability of the conductivity is improved.
Motor casing 1 and back lid 6 all set up the connecting hole, and in the connecting hole was arranged in to the one end of first connecting piece 2, the other end of first connecting piece 2 and the surperficial butt of midbody 5, conveniently install motor casing 1, midbody 5 and back lid 6 in proper order, improved assembly efficiency, and can realize reducing the purpose of the motor casing 1 of midbody 5 and both sides and the resistance of back lid 6.
The first connecting member 2 is made of a conductive metal, and the conductive metal may be made of iron, copper, or the like, and has a certain structural strength and good conductivity.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a connection structure of motor compressor casing, is applied to on the motor compressor, the motor compressor is including motor casing (1), midbody (5) and back lid (6) that connect gradually, a serial communication port, midbody (5) with motor casing (1) with be equipped with at least one first connecting piece (2) between back lid (6) respectively, the one end of first connecting piece (2) with midbody (5) butt, the other end with motor casing (1) or back lid (6) butt, just the material of first connecting piece (2) is electrically conductive material.
2. The connection structure of the shell of the electric compressor according to claim 1, characterized in that a sealing element (3) is arranged between the intermediate body (5) and the motor shell (1) and the rear cover (6), the motor shell (1) and the rear cover (6) and the corresponding sealing element (3) are provided with a connecting hole, one end of the first connecting element (2) is arranged in the connecting hole of the motor shell (1) or the rear cover (6), and the other end of the first connecting element penetrates through the connecting hole of the sealing element (3) and abuts against the surface of the intermediate body (5).
3. The connection structure of the motor compressor housing according to claim 2, wherein one end face of the first connecting member (2) is a flat surface, and the other end of the first connecting member (2) is provided with a taper angle (21), and the taper angle (21) abuts against the surface of the intermediate body (5) and generates an indentation on the surface of the intermediate body (5).
4. The connection structure of the motor compressor housing according to claim 2, wherein both ends of the first connection member (2) are provided with a taper angle (21), one of the taper angles (21) abuts against the motor housing (1) or the rear cover (6), and the other taper angle (21) abuts against the intermediate body (5) and generates an indentation in the surface of the intermediate body (5).
5. The connection structure of the motor compressor housing according to claim 4, characterized in that the connection hole of the motor housing (1) or the rear cover (6) is provided with a tapered hole bottom matching the tapered angle (21), and the tapered angle (21) of the first connection member (2) at one end is placed in the tapered hole bottom.
6. Connection structure of a motor compressor housing according to claim 1, characterized in that a plurality of first connections (2) are provided circumferentially between the motor housing (1) and/or the rear cover (6) and the intermediate body (5).
7. The connection structure of the motor compressor housing according to claim 1, wherein the motor housing (1), the intermediate body (5) and the rear cover (6) are connected by a second connecting member (4), one end of the second connecting member (4) penetrates the rear cover (6), the intermediate body (5) and the motor housing (1) in sequence, and the second connecting member (4) is made of an electrically conductive material.
8. The connection structure of the motor-compressor housing according to claim 7, characterized in that the second connection member (4) comprises a screw, one end of which penetrates the rear cover (6), the intermediate body (5) and the motor housing (1) in this order.
9. The connection structure of the motor compressor housing according to claim 1, characterized in that the material of the first connecting member (2) is a conductive metal.
10. A motor-driven compressor characterized by comprising the connecting structure of the motor-driven compressor housing according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020309981.9U CN212250467U (en) | 2020-03-13 | 2020-03-13 | Connection structure of electric compressor shell and electric compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020309981.9U CN212250467U (en) | 2020-03-13 | 2020-03-13 | Connection structure of electric compressor shell and electric compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212250467U true CN212250467U (en) | 2020-12-29 |
Family
ID=73991449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020309981.9U Active CN212250467U (en) | 2020-03-13 | 2020-03-13 | Connection structure of electric compressor shell and electric compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212250467U (en) |
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2020
- 2020-03-13 CN CN202020309981.9U patent/CN212250467U/en active Active
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