CN217545890U - Power conversion device and motor unit - Google Patents
Power conversion device and motor unit Download PDFInfo
- Publication number
- CN217545890U CN217545890U CN202220753950.1U CN202220753950U CN217545890U CN 217545890 U CN217545890 U CN 217545890U CN 202220753950 U CN202220753950 U CN 202220753950U CN 217545890 U CN217545890 U CN 217545890U
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- wire harness
- power conversion
- section
- bottom wall
- housing
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Abstract
A power conversion device and a motor unit contribute to the miniaturization of the whole device while maintaining the position of a wire harness. The utility model discloses a power conversion device includes: a housing; the components of the electrical apparatus are, in turn, the electric component is accommodated in the housing; and a cable that is passed through the case, wherein a passage through which the wire harness is passed is formed between an inner surface of the case and an outer surface of the electrical component, and at least a part of the inner surface of the case and at least a part of the outer surface of the electrical component are in contact with portions of the wire harness that face each other in a radial direction of the wire harness, thereby forming a clamping portion that clamps the wire harness.
Description
Technical Field
The utility model relates to a power conversion device and motor unit.
Background
In the power conversion apparatus, in order to perform electrical connection and the like between the electrical components, a wire harness is generally arranged in the housing.
On the other hand, in order to fix the wire harness and avoid friction and the like of the wire harness with surrounding members due to vibration and the like, a wire harness clip for holding the wire harness is generally formed of resin or the like at a predetermined position in a housing of the power conversion device.
However, when the harness clip is provided in the case of the power converter, it is necessary to secure a space for providing the harness clip in the case, which tends to increase the total volume of the power converter.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems, and an object of the present invention is to provide a power conversion device and a motor unit that contribute to the overall miniaturization while maintaining the position of a wire harness.
In order to achieve the above object, the present invention provides a power conversion device, including: a housing; an electric component housed in the case; and a wire harness that is passed through the housing, wherein a passage through which the wire harness is passed is formed between an inner surface of the housing and an outer surface of the electrical component, and at least a part of the inner surface of the housing and at least a part of the outer surface of the electrical component are in contact with portions of the wire harness that face each other in a radial direction of the wire harness, thereby forming a clamping portion that clamps the wire harness.
According to the utility model discloses a power conversion device is formed with the passageway that supplies the pencil to pass between the internal surface of casing and electrical components's surface, and at least partly of the internal surface of casing and at least partly of electrical components's surface and the pencil contact at the relative position in the footpath of this pencil of pencil and form the clamping part of centre gripping pencil, consequently, compare with the condition that sets up the pencil clamp and fix the pencil in the casing, can save the setting space that the pencil pressed from both sides, help when keeping the pencil position, realize the holistic miniaturization of power conversion device.
In the power converter according to the present invention, it is preferable that the clamping portion clamps the wire harness in a first direction, and a stopper portion that is in contact with the wire harness from a direction perpendicular to the first direction and limits the wire harness is formed on an inner surface of the housing.
According to the utility model discloses a power conversion device, clamping part centre gripping pencil in the first direction is formed with spacing portion at the internal surface of casing, and spacing portion is spacing from contacting with first direction vertically direction and pencil, consequently, can more stably keep the position of pencil, avoids the pencil to produce friction etc. because of vibration etc. and parts on every side.
In the power converter according to the present invention, it is preferable that the stopper is a protrusion formed on an inner surface of the casing.
According to the utility model discloses a power conversion device, spacing portion is the bulge that forms in the internal surface of casing, consequently, can conveniently form spacing portion, suppresses manufacturing cost.
In the power converter of the present invention, it is preferable that the case has a bottom wall and a peripheral wall rising from a periphery of the bottom wall, the electric component has a bottom surface facing the bottom wall in the first direction, the clamping portion is constituted by the bottom wall and the bottom surface, and the stopper portion is formed in the bottom wall.
According to the utility model discloses a power conversion device, casing have the diapire and from the periphery perisporium that the periphery of diapire rises, and electric component has the bottom surface relative with the diapire in the first direction, and the clamping part comprises diapire and bottom surface, and spacing portion is formed at the diapire, consequently, can conveniently and reliably centre gripping pencil by the diapire of casing and electric component's bottom surface with the help of gravity.
Further, in the power converter of the present invention, it is preferable that the wire harness has a first section and a second section which are adjacent to each other in an extending direction of the wire harness and intersect each other, the stopper includes a first stopper portion which is brought into contact with the first section from a second direction perpendicular to the first direction to restrict the first section, and a second stopper portion which is brought into contact with the second section from a third direction intersecting the first direction and the second direction to restrict the second section.
According to the utility model discloses a power conversion device, the pencil has adjacent and first section and the second section that intersects each other on the extending direction of this pencil, spacing portion includes the spacing portion of first spacing portion and second, first spacing portion is from contacting with first direction vertically second direction and first section and spacing to first section, the spacing portion of second is from contacting with first direction and second direction crossing third direction and second section and spacing to the second section, therefore, carry on spacingly through utilizing first spacing portion and the spacing portion of second to the first section and the second section that intersect each other of pencil, can more stably keep the position of pencil, avoid the pencil to remove on its extending direction, thereby avoid the pencil to produce friction etc. with surrounding parts because of vibration etc. more reliably.
Furthermore, in the power conversion device of the present invention, it is preferable that the limit portion further includes a third limit portion, the first limit portion and the third limit portion limit the first section from both sides in the second direction by contact with the first section, and the second limit portion and the third limit portion limit the second section from both sides in the third direction by contact with the second section.
According to the utility model discloses a power conversion device, spacing portion still includes the spacing portion of third, first spacing portion and the spacing portion of third carry on spacingly from the ascending both sides of second side and first section contact to first section, spacing portion of second and the spacing portion of third carry on spacingly from the both sides of third side and second section contact to the second section, consequently, with only carry on spacingly from one side of second side to first section and only carry on spacingly from one side of third side to the second section and compare, can more stably keep the position of pencil, thereby avoid the pencil to produce friction etc. with parts on every side because of vibration etc. more reliably.
In the power converter of the present invention, it is preferable that the clamping portion clamps the first stage and/or the second stage.
According to the utility model discloses a power conversion device, the clamping part carries out the centre gripping to first section and/or second section, consequently, can keep the position of the first section and/or the second section of pencil more steadily to avoid the pencil to produce friction etc. because of vibration etc. and parts on every side more reliably.
Further, in the power conversion device of the present invention, it is preferable that the housing has: a bottom wall; a convex portion rising from the bottom wall; and a peripheral wall rising from a peripheral edge of the bottom wall and surrounding the convex portion, the electric component including: a bottom surface opposed to the bottom wall in the first direction and constituting the holding portion holding the first segment together with the bottom wall; and a first side surface opposed to the convex portion in the third direction to form a gap with the convex portion through which the second segment passes, the first limiting portion and the second limiting portion are formed on the bottom wall respectively.
In the power converter of the present invention, it is preferable that the electric component is a capacitor module, one end of the wire harness is connected to the resolver, and the other end of the wire harness is connected to the circuit board.
Further, in order to achieve the above object, the present invention provides a motor unit, a motor thereof; and the above-described power conversion device that converts direct-current power supplied from the power supply into alternating-current power and supplies the alternating-current power to the motor.
(effects of utility model)
According to the utility model discloses, be formed with the passageway that supplies the pencil to pass between the internal surface of casing and electric components's surface, at least partly of the internal surface of casing and at least partly of electric components's surface and the pencil radially relative position contact and form the clamping part of centre gripping pencil at this pencil, consequently, compare with the condition that sets up the pencil clamp and fix the pencil in the casing, can save the setting space that the pencil pressed from both sides, help when keeping the pencil position, realize the holistic miniaturization of power conversion device.
Drawings
Fig. 1 is a circuit diagram schematically showing a case where a power conversion device according to an embodiment of the present invention is used for driving a motor.
Fig. 2 is a plan view schematically showing a power conversion device according to an embodiment of the present invention.
Fig. 3 is a partial side sectional view schematically showing a power conversion device according to an embodiment of the present invention.
(symbol description)
10. Power conversion device
11. Electrical component
111. Power module
112. Capacitor module
112B bottom surface
112S first side
1121. Capacitor with improved capacitance
18. Wire harness
181. First stage
182. Second section
183. Third stage
184. Fourth stage
19. Shell body
191. Bottom wall
192. Convex part
193. Peripheral wall
LM limiting part
LM1 first limit part
LM2 second limit part
LM3 third limit part
C1 Connector with a locking member
C2 Electrical connection
CL clamp part
BT power supply
MT motor
Detailed Description
Next, a power converter according to an embodiment of the present invention will be described with reference to fig. 1 to 3, in which fig. 1 is a circuit diagram schematically showing a case where the power converter according to the embodiment of the present invention is used in a drive motor, fig. 2 is a plan view schematically showing the power converter according to the embodiment of the present invention, and fig. 3 is a partial side sectional view schematically showing the power converter according to the embodiment of the present invention.
For convenience of explanation, three directions orthogonal to each other are referred to as an X direction, a Y direction, and a Z direction, and one side of the X direction is referred to as X1, the other side of the X direction is referred to as X2, one side of the Y direction is referred to as Y1, the other side of the Y direction is referred to as Y2, one side of the Z direction is referred to as Z1, and the other side of the Z direction is referred to as Z2.
(Circuit configuration of Power conversion device)
As shown in fig. 1, the power conversion apparatus 10 includes a power module 111, and the power module 111 includes a plurality of switching elements (e.g., IGBT elements), converts dc power supplied from a power source BT into ac power, and supplies the ac power to a motor MT that is an electric target. As shown in fig. 1, the power conversion apparatus 10 further includes a capacitor 1121, and the capacitor 1121 smoothes a voltage supplied from the power source BT to the power module 111.
The motor MT is a three-phase motor having three UVW phases, for example.
(mechanical Structure of Power conversion device)
As shown in fig. 2 and 3, the power conversion apparatus 10 includes: a housing 19; an electric component 11, the electric component 11 being housed in the case 19; and a wire harness 18, the wire harness 18 passing through the housing 19; a passage through which the wire harness 18 passes is formed between the inner surface of the housing 19 and the outer surface of the electrical component 11, and at least a part of the inner surface of the housing 19 and at least a part of the outer surface of the electrical component 11 contact a portion of the wire harness 18 that faces in the radial direction of the wire harness 18, thereby forming a clamping portion CL that clamps the wire harness.
Here, as shown in fig. 2 and 3, the housing 19 has: a bottom wall 191; a convex portion 192 rising from the bottom wall 191 in the Z direction (corresponding to the first direction in the present invention) (in the illustrated example, rising toward the Z1 direction side); and a peripheral wall 193, the peripheral wall 193 rising from the peripheral edge of the bottom wall 191 in the Z direction (rising toward the Z1 direction side in the illustrated example) and surrounding the convex portion 192.
As shown in fig. 2 and 3, the electrical component 11 includes a power module 111 and a capacitor module 112 electrically connected to each other via a bus bar (not shown), wherein the power module 111 is formed in a rectangular parallelepiped shape as a whole and provided on the projection 192, and the capacitor module 112 constitutes a capacitor 1121, which is also formed in a rectangular parallelepiped shape as a whole and provided on the bottom wall 191.
Further, as shown in fig. 2 and 3, the wire harness 18 has a first segment 181 and a second segment 182 which are adjacent in the extending direction of the wire harness 18 and intersect each other, wherein the first segment 181 extends substantially in the X direction, and the second segment 182 extends from the end portion on the X1 direction side of the first segment 181 substantially toward the Y1 direction side and extends toward the Z1 direction side. The wire harness 18 further includes a third segment 183 and a fourth segment 184, the third segment 183 extending from an end portion of the first segment 181 on the X2 direction side substantially toward the Y1 direction side and connecting the first segment 181 to a circuit board (not shown) via a connector C1, for example, and the fourth segment 184 extending from an end portion of the second segment 182 on the Y1 direction side substantially toward the X1 direction side and connecting the second segment 182 to a resolver (not shown) for resolving rotation of the motor via a connector C2, for example.
Further, as shown in fig. 3, the clamping portion CL clamps the wire harness 18 in the Z direction. Specifically, the capacitor module 112 includes: a bottom surface 112B that is opposed to the bottom wall 191 in the Z direction, and that constitutes a clamping portion CL that clamps the first segment 181 of the wire harness 18 together with the bottom wall 191; and a first side surface 112S facing the convex portion 192 in the X direction (X2 direction side in the illustrated example) and forming a gap through which the second segment 182 of the wire harness 18 passes between the first side surface 112S and the convex portion 192.
As shown in fig. 2 and 3, a stopper LM is formed on the inner surface of the housing 19, and contacts the wire harness 18 from a direction perpendicular to the Z direction to stop the wire harness 18. Specifically, the limit portion LM is a protrusion formed on the bottom wall 191 of the housing 19, and includes a first limit portion LM1 and a second limit portion LM2, the first limit portion LM1 contacts with the first section 181 of the wire harness 18 from the Y direction (corresponding to the second direction in the present invention) to limit the first section 181, and the second limit portion LM2 contacts with the second section 182 of the wire harness 18 from the X direction (corresponding to the third direction in the present invention) to limit the second section 182. The limiting portion LM further includes a third limiting portion LM3, the first limiting portion LM1 and the third limiting portion LM3 contact with the first section 181 of the wire harness 18 from both sides in the Y direction to limit the first section 181, and the second limiting portion LM2 and the third limiting portion LM3 contact with the second section 182 of the wire harness 18 from both sides in the X direction to limit the second section 182.
(main effect of the present embodiment)
According to the power conversion device 10 of the present embodiment, the passage through which the wire harness 18 passes is formed between the inner surface of the housing 19 and the outer surface of the electrical component 11, and at least a part of the inner surface of the housing 19 and at least a part of the outer surface of the electrical component 11 contact a portion (outer peripheral surface portion) of the wire harness 18 that faces in the radial direction of the wire harness 18 to form the clamping portion CL that clamps the wire harness 18, so that the installation space of the wire harness clamp can be saved compared to a case where the wire harness 18 is fixed by providing the wire harness clamp in the housing 19, which contributes to the miniaturization of the entire power conversion device 10 while maintaining the position of the wire harness 18.
The present invention has been described above by way of example with reference to the accompanying drawings, and it is to be understood that the present invention is not limited to the specific embodiments.
For example, in the above-described embodiment, the power conversion device 10 is used to drive the motor MT, but the present invention is not limited thereto, and the power conversion device 10 may be used to drive other devices.
In the above embodiment, the clamping portion CL is formed by the outer surface of the capacitor module 112 and the inner surface of the case 19, but the present invention is not limited to this, and the clamping portion CL may be formed by the outer surface of an electrical component other than the capacitor module 112 and the inner surface of the case 19.
Further, in the above embodiment, the clamping portion CL clamps the first section 181 of the wire harness 18, but is not limited to this, and the clamping portion CL may be provided to clamp the second section 182 of the wire harness 18, or may be provided to clamp the first section 181 and the second section 182 of the wire harness 18 at the same time.
In the above embodiment, the stopper LM is formed on the bottom wall 191 of the housing 19, but the present invention is not limited to this, and the position of the stopper LM may be appropriately changed as needed.
In the above embodiment, the stopper LM includes the first stopper LM1, the second stopper LM2, and the third stopper LM3, but the present invention is not limited to this, and only one of the first stopper LM1, the second stopper LM2, and the third stopper LM3 may be left, and the stopper LM may not be provided in some cases.
It should be understood that the present invention can freely combine the respective components in the embodiments or appropriately change or omit the respective components in the embodiments within the scope thereof.
Claims (10)
1. A power conversion device comprising: a housing; an electric component housed in the case; and a wire harness passed around in the housing,
a passage through which the wire harness passes is formed between an inner surface of the housing and an outer surface of the electrical component,
at least a part of the inner surface of the housing and at least a part of the outer surface of the electrical component are in contact with a portion of the wire harness that faces in a radial direction of the wire harness, and form a clamping portion that clamps the wire harness.
2. The power conversion apparatus according to claim 1,
the clamping portion clamps the wire harness in a first direction,
a stopper is formed on an inner surface of the housing,
the stopper portion is configured to come into contact with the wire harness from a direction perpendicular to the first direction to restrict the wire harness.
3. The power conversion apparatus according to claim 2,
the stopper is a protrusion formed on an inner surface of the housing.
4. The power conversion apparatus according to claim 2,
the housing has a bottom wall and a peripheral wall rising from a peripheral edge of the bottom wall,
the electrical component has a bottom surface opposite to the bottom wall in the first direction,
the clamping portion is composed of the bottom wall and the bottom surface,
the limiting part is formed on the bottom wall.
5. The power conversion apparatus according to claim 2,
the wire harness has a first section and a second section adjacent to each other in an extending direction of the wire harness and crossing each other,
the limiting part comprises a first limiting part and a second limiting part,
the first limiting part is contacted with the first section from a second direction vertical to the first direction to limit the first section,
the second stopper portion is in contact with the second segment from a third direction intersecting the first direction and the second direction to restrict the second segment.
6. The power conversion apparatus according to claim 5,
the limiting part also comprises a third limiting part,
the first limiting part and the third limiting part are contacted with the first section from two sides in the second direction to limit the first section,
the second limiting portion and the third limiting portion are in contact with the second section from two sides in the third direction to limit the second section.
7. The power conversion apparatus according to claim 5,
the clamping portion clamps the first section and/or the second section.
8. The power conversion apparatus according to claim 6,
the housing has:
a bottom wall;
a convex portion rising from the bottom wall; and
a peripheral wall rising from a peripheral edge of the bottom wall and surrounding the convex portion,
the electric component has:
a bottom surface opposed to the bottom wall in the first direction and constituting the holding portion holding the first segment together with the bottom wall; and
a first side surface facing the convex portion in the third direction to form a gap with the convex portion through which the second segment passes,
the first limiting portion and the second limiting portion are formed on the bottom wall respectively.
9. The power conversion apparatus according to claim 1,
the electrical component is a capacitor module which is,
one end of the wire harness is connected with the analyzer, and the other end of the wire harness is connected with the circuit substrate.
10. A motor unit, characterized by comprising:
a motor; and
the power conversion device according to any one of claims 1 to 9, which converts direct-current power supplied from a power source into alternating-current power and supplies the alternating-current power to the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220753950.1U CN217545890U (en) | 2022-03-31 | 2022-03-31 | Power conversion device and motor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220753950.1U CN217545890U (en) | 2022-03-31 | 2022-03-31 | Power conversion device and motor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217545890U true CN217545890U (en) | 2022-10-04 |
Family
ID=83429182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220753950.1U Active CN217545890U (en) | 2022-03-31 | 2022-03-31 | Power conversion device and motor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217545890U (en) |
-
2022
- 2022-03-31 CN CN202220753950.1U patent/CN217545890U/en active Active
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