CN219287325U - Electric sealing structure for electronic oil pump and electronic oil pump - Google Patents
Electric sealing structure for electronic oil pump and electronic oil pump Download PDFInfo
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- CN219287325U CN219287325U CN202320689759.XU CN202320689759U CN219287325U CN 219287325 U CN219287325 U CN 219287325U CN 202320689759 U CN202320689759 U CN 202320689759U CN 219287325 U CN219287325 U CN 219287325U
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- oil pump
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Abstract
The utility model provides an electric sealing structure for an electronic oil pump and the electronic oil pump, wherein corresponding plastic coating protrusions and insertion grooves are respectively arranged on a stator plastic coating body and a control shell, and a sealing space and an elastic sealing structure are arranged between the plastic coating protrusions and the insertion grooves.
Description
Technical Field
The utility model belongs to the technical field of electronic oil pumps, and particularly relates to an electric sealing structure for an electronic oil pump and the electronic oil pump.
Background
The automobile industry rapidly develops, and along with the development of automobile performance towards safer, more reliable, more stable, full-automatic intelligent and environment-friendly energy-saving directions, the electronic oil pump is widely applied to an automobile lubricating system and a cooling system, and can well meet the market requirements.
One problem faced by the electronic oil pump in the existing market is that the environmental temperature of the actual application scene is higher and higher (for example, the electronic oil pump is applied to an engine cabin, the highest temperature can reach 140 ℃), and the service lives of components such as a control board and a motor in the electronic oil pump are greatly influenced. The existing scheme aims at the problem, namely, the oil liquid introduced into an oil pumping cavity of the oil pump enters a motor part for circulation, heat of the motor and a control board part connected with the motor part is taken away, and the purpose of heat dissipation is achieved, but the existing scheme also has the new problem that the control board part cannot be contacted with the oil liquid, and the sealing between the motor part and the control board part becomes critical. In the existing scheme, an electric connection part between a motor part and a control panel part usually adopts a contact pin, is directly injection-molded on a shell of the control panel part, and is sealed by dispensing sealant. However, this solution has the following problems:
the contact pin is two materials with the casing, and is as an organic whole, nevertheless after long-time operation, the connection face department of both can appear connecting inseparable problem (produce the gap promptly) because of ageing for fluid accessible this gap gets into control panel part, and the sealing gum also has the problem of easy ageing, can lose sealing performance after long-time use, leads to the condition emergence of fluid seepage, influences product life.
Disclosure of Invention
In order to solve the problems, the utility model provides an electric sealing structure for an electronic oil pump and the electronic oil pump, and the technical scheme is as follows:
an electrical seal structure for an electronic oil pump of the present utility model includes:
the stator plastic coating body is characterized in that a first end face of the stator plastic coating body in the axial direction is a first connecting face; a plurality of plastic-coated bulges are arranged on the first connecting surface;
the first ends of the electric connection units are injection molded on the plastic-coated protrusions and are electrically connected to the stator in the stator plastic-coated body;
a control housing for connection to the first connection face; an insertion groove corresponding to the plastic-coated protrusion is formed in the control shell, and an extending hole is formed in the bottom surface of the insertion groove; the second end of the electric connection unit extends into and is electrically connected to a control board in the control shell through the extending hole;
the plastic-covered bulge and/or the extending hole are/is provided with a sealing space, an elastic sealing structure is arranged in the sealing space, and the elastic sealing structure is configured to deform under the extrusion of the plastic-covered bulge and the inner wall of the extending hole so as to fill and seal the sealing space and the gap between the plastic-covered bulge and the inserting groove.
According to the electrical sealing structure for the electronic oil pump, the sealing space is the first annular sealing groove, and the elastic sealing structure is the first sealing ring.
According to the electrical sealing structure for the electronic oil pump, the sealing capacity of the elastic sealing structure is within the range of 10bar, so that no liquid is leaked into the control shell.
According to the electrical sealing structure for the electronic oil pump, the electrical connection unit is the contact pin.
The utility model relates to an electrical sealing structure for an electronic oil pump, wherein a plastic-coated bulge comprises a first step bulge and a second step bulge;
the first step bulge is arranged on the first connecting surface, the second step bulge is arranged on the bulge surface of the first step bulge, and a step surface surrounding the second step bulge is formed on the bulge surface of the first step bulge;
the cross section of the insertion groove is matched with the cross section of the first step bulge, the cross section of the extension hole is matched with the cross section of the second step bulge, and a matching surface corresponding to the step surface is formed on the bottom surface of the insertion groove;
wherein the height of the first step bulge is smaller than the groove depth of the insertion groove;
under the inserted state, the plastic-coated bulge is inserted into the insertion groove until the first connecting surface is attached to the control shell, and the step surface, the matching surface, the outer side wall of the second step bulge and the inner side wall of the insertion groove are matched to form the sealing space.
According to the electrical sealing structure for the electronic oil pump, the first step bulge is the frustum with the diameter gradually reduced towards the control shell.
According to the electrical sealing structure for the electronic oil pump, the plurality of plastic-coated protrusions are annularly spaced and uniformly arranged on the first connecting surface.
According to the electrical sealing structure for the electronic oil pump, the second annular sealing groove surrounding each plastic-coated bulge is arranged between the first connecting surface and the control shell, and the second sealing ring is arranged in the second annular sealing groove.
The utility model relates to an electrical sealing structure for an electronic oil pump, wherein a stator plastic-coated body comprises a plastic-coated shell body formed by plastic coating and a stator;
the plastic-covered shell comprises a plastic-covered shell body, wherein a cylindrical through groove is formed in the plastic-covered shell body along the axial direction, mounting references for mounting the control shell and an external oil pumping structure are respectively arranged at two ends of the inner wall surface of the cylindrical through groove, and bearing structures for mounting an external rotating shaft are respectively arranged on the control shell and the external oil pumping structure.
The electronic oil pump comprises the electric sealing structure for the electronic oil pump.
By adopting the technical scheme, the utility model has the following advantages and positive effects compared with the prior art:
according to the embodiment of the utility model, the corresponding plastic coating bulge and the corresponding insertion groove are respectively arranged on the stator plastic coating body and the control shell, the sealing space and the elastic sealing structure are arranged between the plastic coating bulge and the insertion groove, when the stator plastic coating body is connected with the control shell, the elastic sealing structure fills the sealing space and the gap between the plastic coating bulge and the insertion groove in a deformation mode under the extrusion of the outer wall surface of the plastic coating bulge and the inner wall surface of the insertion groove, compared with the sealing glue in the existing scheme, the sealing effect is stable in the sealing mode by means of self viscosity, the deformation degree and the generated elastic force can be adjusted by means of adjusting the material of the elastic sealing structure, and therefore the required sealing performance is obtained, and the sealing effect is controllable. In addition, the length of the electric connection unit inserted into the stator plastic coating body is increased by arranging the plastic coating bulge, a structure similar to a labyrinth seal can be formed between the plastic coating bulge and the electric connection unit, and cooling oil in the motor structure can not enter the control shell from the path.
Drawings
Fig. 1 is a sectional view of an electrical seal structure for an electronic oil pump of the present utility model;
fig. 2 is an exploded view of the electrical seal structure for the electronic oil pump of the present utility model;
fig. 3 is a partially enlarged view of the electrical seal structure for the electronic oil pump of the present utility model.
Reference numerals illustrate: 1: a control housing; 2: a stator plastic coating body; 3: a housing; 4: sealing the space; 5: an elastic sealing structure; 6: a second annular seal groove; 7: a second seal ring; 8: an electrical connection unit; 9: coating plastic bulges; 901: a first step protrusion; 902: a second step protrusion; 10: a control board; 11: a rotating shaft; 12: and is inserted into the groove.
Detailed Description
The utility model provides an electric sealing structure for an electronic oil pump and the electronic oil pump, and the electric sealing structure and the electronic oil pump are further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the utility model will become more apparent from the following description and from the claims.
Referring to fig. 1 to 3, in one embodiment, an electrical seal structure for an electronic oil pump includes a stator pack 2, a control housing 1, and a plurality of electrical connection units 8.
The first end face of the stator plastic coating body 2 in the axial direction is a first connecting face, and a plurality of plastic coating bulges 9 are arranged on the first connecting face. The first ends of the plurality of electrical connection units 8 are respectively injection molded in the corresponding plastic-coated protrusions 9 and are electrically connected to the stator in the stator plastic-coated body 2.
A control board 10 is arranged in the control housing 1 for connection to the first connection surface for forming a connection with the stator pack 2. An inserting groove 12 corresponding to the plastic-coated bulge 9 is formed in the control shell 1, and an extending hole is formed in the bottom surface of the inserting groove 12. The second end of the electrical connection unit 8 protrudes into and is electrically connected to the control board 10 in the control housing 1 through the protruding hole.
Wherein, the plastic-covered bulge 9 and/or the extending hole are/is provided with a sealing space 4, an elastic sealing structure 5 is arranged in the sealing space 4, and the elastic sealing structure 5 is configured to deform under the extrusion of the plastic-covered bulge 9 and the extending hole inner wall so as to fill the sealing space 4 and the gap between the plastic-covered bulge 9 and the inserting groove 12.
According to the embodiment, the corresponding plastic coating bulge 9 and the corresponding inserting groove 12 are respectively arranged on the stator plastic coating body 2 and the control shell 1, the sealing space 4 and the elastic sealing structure 5 are arranged between the plastic coating bulge 9 and the inserting groove 12, when the stator plastic coating body is connected, the elastic sealing structure 5 fills the gap between the sealing space 4 and the plastic coating bulge 9 and the inserting groove 12 in a deformation mode under the extrusion of the outer wall surface of the plastic coating bulge 9 and the inner wall surface of the inserting groove 12, compared with the sealing glue in the existing scheme, the sealing effect is stable in a sealing mode by means of self viscosity, the deformation degree and the generated elastic force can be adjusted in a mode of adjusting the material of the elastic sealing structure 5, so that the required sealing performance is obtained, and the sealing effect is controllable. In addition, the length of the electric connection unit 8 inserted into the stator plastic coating body 2 is increased by arranging the plastic coating bulge 9, so that a structure similar to a labyrinth seal can be formed between the plastic coating body and the electric connection unit, and cooling oil in the motor structure can not enter the control shell 1 from the path.
The specific structure of the electrical seal structure for an electronic oil pump of the present embodiment is further described below:
in this embodiment, the stator molding body 2 may specifically include a molded molding housing body and a stator.
The cylindrical through groove is axially formed in the plastic-covered shell body, the two ends of the inner wall surface of the cylindrical through groove are respectively provided with mounting references for mounting the control shell 1 and an external oil pumping structure, the control shell 1 and the external oil pumping structure are respectively provided with bearing structures for mounting the external rotating shaft 11, namely, the control shell 1 and the external oil pumping structure can be mounted on the inner wall surface of the cylindrical through groove in an interference fit manner, the two ends of the rotating shaft 11 are positioned through the two bearing structures, the external oil pumping structure, the stator plastic-covered body 2 and the control shell 1 can be matched to form an oil cooling cavity in the cylindrical through groove, and oil in the external oil pumping structure is led in and led out for cooling.
In this embodiment, the sealing space 4 is a first annular sealing groove, the elastic sealing structure 5 may be a first sealing ring, and sealing can be achieved through deformation of the first sealing ring in the first annular sealing groove, so that cooling oil in the stator plastic-coated body 2 is prevented from entering the control housing 1.
Further, the sealing performance of the elastic sealing structure 5 (i.e. the first sealing ring) may be that the sealing capability is within 10bar, so as to ensure that no liquid leaks into the control housing 1 or leaks to the outside of the casing 3, and specifically, the sealing performance may be determined according to the pressure of the cooling oil in the communicated stator plastic package 2.
In this embodiment, the electrical connection unit 8 may be a pin, and is directly integrally injection molded with the stator to form the stator molding body 2.
Referring to fig. 3, further, the molding protrusion 9 provided on the stator molding body 2 may include a first step protrusion 901 and a second step protrusion 902.
The first step protrusion 901 is provided on the first connection surface, the second step protrusion 902 is provided on the protrusion surface of the first step protrusion 901, and a step surface surrounding the second step protrusion 902 is formed on the protrusion surface of the first step protrusion 901 (i.e., the cross section of the second step protrusion 902 is smaller than the cross section of the first step protrusion 901, thereby forming the step surface). Correspondingly, the cross section of the insertion groove 12 matches the cross section of the first step protrusion 901, and the cross section of the penetration hole matches the cross section of the second step protrusion 902, and a mating surface corresponding to the step surface is formed on the bottom surface of the insertion groove 12.
Wherein the height of the first step protrusion 901 is smaller than the groove depth of the insertion groove 12. In the inserted state, the plastic-coated protrusion 9 is inserted into the insertion groove 12 until the first connecting surface is attached to the control housing 1, and the step surface, the matching surface, the outer side wall of the second step protrusion 902, and the inner side wall of the insertion groove 12 are matched to form the first annular sealing groove, wherein the difference between the height of the first step protrusion 901 and the groove depth of the insertion groove 12 is the width of the first annular sealing groove in the axial direction.
Further, the first step protrusion 901 is a frustum with a diameter gradually decreasing toward the control housing 1, and the second step protrusion 902 may be a frustum or a cylinder, and only the lower end surface thereof is required to be smaller than the upper end surface of the first step protrusion 901. Providing the first step protrusion 901 as a truncated cone may create a chamfer-like effect, facilitating insertion into the insertion groove 12 at the time of assembly, and the slope of the truncated cone may also facilitate demolding.
In this embodiment, the plurality of molding protrusions 9 are uniformly arranged on the first connection surface at annular intervals. Specifically, the number of the plastic-coated protrusions 9 can be three, and the three are respectively spaced by 120 degrees.
In this embodiment, in order to avoid external impurities entering the control housing 1 or entering the oil cooling cavity of the stator plastic coating body 2 through the gap between the stator plastic coating body 2 and the control housing 1, a second annular sealing groove 6 surrounding each plastic coating protrusion 9 is arranged between the first connecting surface and the control housing 1, and a second sealing ring 7 is arranged in the second annular sealing groove 6, that is, a sealing groove with a larger size is arranged at the gap between the plastic coating body and the control housing 1, and each plastic coating protrusion 9 is enclosed inside to cooperate with the sealing ring to achieve the required sealing effect.
Of course, in other embodiments, if the outer side of the stator molding body 2 and the control housing 1 is provided with the outer shell 3, the second annular sealing groove 6 may also be disposed between the outer shell 3 and the stator molding body 2 or the control housing 1, and only the communication channel between the sealing and the outside needs to be satisfied.
Example two
The present embodiment provides an electronic oil pump including the electrical seal structure for an electronic oil pump in the first embodiment. Through set up the plastic package protruding 9 and the insertion groove 12 that correspond respectively on stator plastic package body 2 and control housing 1, and plastic package protruding 9 sets up sealed space 4 and elastic sealing structure 5 between the insertion groove 12, when connecting, this elastic sealing structure 5 fills sealed space 4 and plastic package protruding 9 and stretches into the clearance between the hole through the mode of deformation under the extrusion of the outer wall surface of plastic package protruding 9 and the inner wall surface of insertion groove 12, compare in current scheme the form that the sealant relies on self viscidity to seal, the sealing effect is stable, and the material etc. mode adjustment of accessible elastic sealing structure 5 its deformation degree and the elastic force size that produces, thereby obtain required sealing performance, the sealing effect is controllable. In addition, the length of the electric connection unit 8 inserted into the stator plastic coating body 2 is increased by arranging the plastic coating bulge 9, so that a structure similar to a labyrinth seal can be formed between the plastic coating body and the electric connection unit, and cooling oil in the motor structure can not enter the control shell 1 from the path.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments. Even if various changes are made to the present utility model, it is within the scope of the appended claims and their equivalents to fall within the scope of the utility model.
Claims (10)
1. An electrical seal structure for an electronic oil pump, comprising:
the stator plastic coating body is characterized in that a first end face of the stator plastic coating body in the axial direction is a first connecting face; a plurality of plastic-coated bulges are arranged on the first connecting surface;
the first ends of the electric connection units are injection molded on the plastic-coated protrusions and are electrically connected to the stator in the stator plastic-coated body;
a control housing for connection to the first connection face; an insertion groove corresponding to the plastic-coated protrusion is formed in the control shell, and an extending hole is formed in the bottom surface of the insertion groove; the second end of the electric connection unit extends into and is electrically connected to a control board in the control shell through the extending hole;
the plastic-covered bulge and/or the extending hole are/is provided with a sealing space, an elastic sealing structure is arranged in the sealing space, and the elastic sealing structure is configured to deform under the extrusion of the plastic-covered bulge and the inner wall of the extending hole so as to fill and seal the sealing space and the gap between the plastic-covered bulge and the inserting groove.
2. The electrical seal structure for an electronic oil pump according to claim 1, wherein the seal space is a first annular seal groove, and the elastic seal structure is a first seal ring.
3. The electrical seal structure for an electronic oil pump according to claim 1, wherein the sealing capability of the elastic seal structure is within 10 bar.
4. The electrical seal structure for an electronic oil pump according to claim 1, wherein the electrical connection unit is a pin.
5. The electrical seal structure for an electronic oil pump as set forth in claim 1, wherein the over-molding protrusion includes a first step protrusion and a second step protrusion;
the first step bulge is arranged on the first connecting surface, the second step bulge is arranged on the bulge surface of the first step bulge, and a step surface surrounding the second step bulge is formed on the bulge surface of the first step bulge;
the cross section of the insertion groove is matched with the cross section of the first step bulge, the cross section of the extension hole is matched with the cross section of the second step bulge, and a matching surface corresponding to the step surface is formed on the bottom surface of the insertion groove;
wherein the height of the first step bulge is smaller than the groove depth of the insertion groove;
under the inserted state, the plastic-coated bulge is inserted into the insertion groove until the first connecting surface is attached to the control shell, and the step surface, the matching surface, the outer side wall of the second step bulge and the inner side wall of the insertion groove are matched to form the sealing space.
6. The electrical seal structure for an electronic oil pump according to claim 5, wherein the first step protrusion is a frustum with a gradually decreasing diameter toward the control housing.
7. The electrical seal structure for an electronic oil pump as set forth in claim 1, wherein said plurality of said plastic-coated protrusions are annularly spaced and uniformly arranged on said first connecting surface.
8. The electrical seal structure for an electronic oil pump according to claim 1, wherein a second annular seal groove surrounding each plastic-coated boss is provided between the first connection surface and the control housing, and a second seal ring is provided in the second annular seal groove.
9. The electrical seal structure for an electronic oil pump as set forth in claim 1, wherein the stator molding body includes a molding-molded molding-case body and a stator;
the plastic-covered shell comprises a plastic-covered shell body, wherein a cylindrical through groove is formed in the plastic-covered shell body along the axial direction, mounting references for mounting the control shell and an external oil pumping structure are respectively arranged at two ends of the inner wall surface of the cylindrical through groove, and bearing structures for mounting an external rotating shaft are respectively arranged on the control shell and the external oil pumping structure.
10. An electronic oil pump comprising the electrical seal structure for an electronic oil pump according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320689759.XU CN219287325U (en) | 2023-03-31 | 2023-03-31 | Electric sealing structure for electronic oil pump and electronic oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320689759.XU CN219287325U (en) | 2023-03-31 | 2023-03-31 | Electric sealing structure for electronic oil pump and electronic oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219287325U true CN219287325U (en) | 2023-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320689759.XU Active CN219287325U (en) | 2023-03-31 | 2023-03-31 | Electric sealing structure for electronic oil pump and electronic oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219287325U (en) |
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2023
- 2023-03-31 CN CN202320689759.XU patent/CN219287325U/en active Active
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