CN212724778U - Engine harness and engine - Google Patents
Engine harness and engine Download PDFInfo
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- CN212724778U CN212724778U CN202021320760.8U CN202021320760U CN212724778U CN 212724778 U CN212724778 U CN 212724778U CN 202021320760 U CN202021320760 U CN 202021320760U CN 212724778 U CN212724778 U CN 212724778U
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Abstract
The utility model belongs to the technical field of the engine, concretely relates to engine pencil and engine, this engine pencil includes a plurality of branch pencil, and branch pencil includes signal line, power cord, earth connection and magnet, and power cord and signal line are at least partly around establishing on the magnet, and the direction of establishing around of power cord is opposite with the direction of establishing around of signal line; and a shielding layer is arranged outside each branch wire harness, and two ends of the shielding layer along the length direction of the branch wire harness are grounded. The utility model provides an engine wire harness sets up the magnet in each branch wiring harness, winds power cord and signal line on the magnet in opposite direction to reach the effect of offsetting magnetic field, avoided causing electromagnetic interference to the engine; through set up the shielding layer on each branch pencil to ground the shielding layer, introduce interference current in the ground, avoid causing signal interference to the engine, solved among the generating set the engine and received the problem of interference easily.
Description
Technical Field
The utility model belongs to the technical field of the engine, concretely relates to engine pencil and engine.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The engine wiring harness is an important part of an electronic control engine, is used for connecting all electronic components on the engine with an ECU (electronic control unit) to realize the transmission and control of electrical signals between the ECU and all the electronic components, and is also used for connecting all the components with the ECU; the generator set generally comprises a generator, an engine and a control system, when the generator works, because the power is high, a wire harness of the engine is easy to generate a magnetic field, and the magnetic field can cause electromagnetic interference to the engine to influence the normal work of the engine.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the engine is easy to receive electromagnetic interference in the generator set at least. The purpose is realized by the following technical scheme:
the utility model discloses a first aspect provides an engine pencil, including a plurality of branch pencil, branch pencil includes signal line, power cord, earth connection and magnet, the power cord with the signal line is at least partly around establishing on the magnet, and the direction of establishing around of power cord is opposite with the direction of establishing around of signal line; and a shielding layer is arranged outside each branch wire harness, and two ends of the shielding layer along the length direction of the branch wire harness are grounded.
According to the engine wiring harness provided by the embodiment of the utility model, the magnet is arranged in each branch wiring harness, and the power line and the signal line are wound on the magnet in opposite directions, so that the effect of offsetting a magnetic field is achieved, and the electromagnetic interference to the engine is avoided; through set up the shielding layer on each branch pencil to ground the shielding layer, introduce interference current in the ground, avoid causing signal interference to the engine, solved among the generating set the engine and received the problem of interference easily.
In addition, according to the utility model discloses engine pencil, can also have following technical characteristics:
in some embodiments of the present invention, the power line wound on the magnet and the signal line wound on the magnet are symmetrically distributed on both sides of the magnet.
In some embodiments of the present invention, the magnet includes a first magnetic ring and a second magnetic ring, the power line is wound on the first magnetic ring, and the signal line is wound on the second magnetic ring.
In some embodiments of the present invention, the power line is wound around the first magnetic ring in a clockwise direction, and the signal line is wound around the second magnetic ring in a counterclockwise direction.
In some embodiments of the present invention, the power line is wound around the first magnetic ring in the counterclockwise direction, and the signal line is wound around the second magnetic ring in the clockwise direction.
In some embodiments of the present invention, the shielding layer is a wire mesh.
In some embodiments of the present invention, the plurality of wires of the wire mesh are arranged in a diamond-shaped cross arrangement.
In some embodiments of the present invention, an insulating skin layer is disposed on the branch wire harness, and the wire mesh is wrapped around an outer side of the insulating skin layer.
The utility model discloses the second aspect provides an engine, the engine includes electrical unit and a plurality of sensor to and according to any one of the above-mentioned embodiment the engine pencil, the engine pencil includes a plurality of branch pencil, every the one end of branch pencil with the electrical unit is connected, the other end and one the sensor is connected.
The utility model discloses the engine has the advantage the same with the engine pencil in above-mentioned arbitrary embodiment, no longer gives unnecessary details here.
In some embodiments of the present invention, the engine further comprises a transient diode and a filter capacitor, the transient diode is connected between the power line and the ground line of the branch harness, and the filter capacitor is connected between the signal line and the ground line of the branch harness.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 is a schematic diagram of an engine harness according to an embodiment of the present invention;
fig. 2 is an external schematic structure diagram of a branch harness in an engine harness according to an embodiment of the present invention.
The reference symbols in the drawings denote the following:
10. a branch wire harness; 11. a signal line; 12. a power line; 13. a ground line; 14. a magnet;
20. a shielding layer; 21. a ground terminal;
30. an electronic control unit;
40. a sensor;
50. a transient diode;
60. and a filter capacitor.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 and 2, an embodiment of the first aspect of the present invention provides an engine wire harness, which includes a plurality of branch wire harnesses 10, each branch wire harness 10 includes a signal wire 11, a power wire 12, a ground wire 13 and a magnet 14, the power wire 12 and the signal wire 11 are at least partially wound on the magnet 14, and a winding direction of the power wire 12 is opposite to a winding direction of the signal wire 11; each branch wire harness 10 is externally provided with a shielding layer 20, and both ends of the shielding layer 20 in the length direction of the branch wire harness 10 are grounded.
Specifically, the engine harness includes a plurality of branch harnesses 10, each branch harness 10 has the same structure and includes a signal line 11, a power line 12 and a ground line 13, wherein the signal line 11 is used for signal communication, and illustratively, the signal line 11 adopts a twisted wire structure for improving the interference resistance. The power line 12 and the signal line 11 are respectively wound on the magnet 14, and the power line 12 is wound in a direction opposite to that of the signal line 11 for canceling the magnetic field.
The power line 12 of the branch wire harness 10 may be partially or completely wound around the magnet 14, and correspondingly, the signal line 11 may be partially or completely wound around the magnet 14, and preferably, in order to better cancel the magnetic field and eliminate the electromagnetic interference generated to the engine, the length of the power line 12 wound around the magnet 14 and the length of the signal line 11 wound around the magnet 14 should be equal, for example, when the length of the power line 12 is equal to that of the signal line 11 in the branch wire harness 10, the power line 12 is completely wound around the magnet 14, and correspondingly, the signal line 11 is also completely wound around the magnet 14; a segment of 1/2 length in the power cord 12 is wound around the magnet 14, and correspondingly, a segment of 1/2 length in the signal cord 11 is also wound around the magnet 14.
As shown in fig. 1, taking the example that the magnet 14 is provided as a ring magnet, the power line 12 may be wound around the ring magnet in a clockwise direction, and the signal line 11 may be wound around the ring magnet in a counterclockwise direction; alternatively, the power wire 12 may be wound on the ring magnet in a counterclockwise direction, and the signal wire 11 may be wound on the ring magnet in a clockwise direction; it is understood that the magnet 14 may be configured as a bar magnet, and the power line 12 and the signal line 11 may be wound around both ends of the bar magnet, respectively, and wound in opposite directions; the magnet 14 may also be provided as a horseshoe-shaped magnet, and the power line 12 and the signal line 11 may be wound around both ends of the horseshoe-shaped magnet, respectively, and wound in opposite directions.
The shielding layer 20 disposed outside each branch wire harness 10 is configured to increase the signal interference resistance of the branch wire harness 10, in the length direction of the branch wire harness 10, the shielding layer 20 wraps the periphery of the branch wire harness 10, and both ends of the shielding layer 20 are grounded, specifically, the two ends of the shielding layer 20 may be respectively provided with a ground terminal 21, and the ground terminal 21 is connected to a ground wire, it should be noted that the grounding in this embodiment does not only mean that the shielding layer 20 is connected to the ground, but also may be called grounding as long as a device capable of releasing the electric leakage on the shielding layer 20 is capable of releasing, for example, the connection between the shielding layer 20 and a conductive metal such as a ground iron block in this embodiment may be called grounding. The grounding of the shielding layer 20 in this embodiment can prevent the cables in the branch wiring harness 10 from interfering with each other, and can introduce an interference current into the ground, thereby avoiding interference with the engine.
In summary, in the engine wiring harness according to the embodiment of the present invention, the magnet 14 is disposed in each branch wiring harness 10, and the power line 12 and the signal line 11 are wound around the magnet 14 in opposite directions, so as to achieve the effect of canceling out the magnetic field and avoid electromagnetic interference to the engine; by arranging the shielding layer 20 on each branch wire harness 10 and grounding the shielding layer 20, interference current is introduced to the ground, signal interference on an engine is avoided, and the problem that the engine in a generator set is easily interfered is solved.
In some embodiments of the present invention, a magnet 14 is disposed in each branch wire harness 10, and the power line 12 wound on the magnet 14 and the signal line 11 wound on the magnet 14 are symmetrically distributed on both sides of the magnet 14. Illustratively, when the magnet 14 is provided as the ring magnet 14, the power line 12 and the signal line 11 are symmetrically provided about the center of the ring magnet 14; when the magnet 14 is provided as the bar magnet 14, the power line 12 and the signal line 11 are symmetrically provided about the center axis of the bar magnet 14.
In other embodiments of the present invention, the magnet 14 in each branch wire harness 10 includes two magnetic rings, i.e., a first magnetic ring and a second magnetic ring, the power line 12 is wound on the first magnetic ring, and the signal line 11 is wound on the second magnetic ring. On the basis, the winding direction of the power line 12 on the first magnetic ring is opposite to the winding direction of the signal line 11 on the second magnetic ring.
On the basis, one possible implementation mode is that the power line 12 is wound on the first magnetic ring in the clockwise direction, and the signal line 11 is wound on the second magnetic ring in the counterclockwise direction. Another possible embodiment is that the power line 12 is wound around the first magnetic ring in the counterclockwise direction, and the signal line 11 is wound around the second magnetic ring in the clockwise direction. It should be noted that the size and structure of the first magnetic ring are the same as those of the second magnetic ring, and in order to achieve the purpose of canceling out the magnetic field, the length of the power line 12 wound around the first magnetic ring is the same as that of the signal line 11 wound around the second magnetic ring.
In some embodiments of the present invention, the shielding layer 20 is provided as a wire mesh, and the wire mesh is wrapped on each branch wire harness 10 to form a metal cage for shielding signal interference, on this basis, it should be noted that each branch wire harness 10 is further provided with an insulating skin layer, and the wire mesh is wrapped on the outside of the insulating skin layer.
Illustratively, the wire mesh may be braided from copper wire or tin-plated copper wire. Further, as shown in fig. 2, a plurality of wires of the wire mesh are arranged in a rhombic shape in a crossed manner, so that the shielding effect of the wire mesh on signals is further enhanced. The wire mesh is grounded at both ends in the length direction of the branch wire harness 10, and illustratively, one wire may be led out at both ends of the wire mesh to be electrically connected to the ground or to a grounded conductive metal, so that the interference current is introduced to the ground.
The embodiment of the second aspect of the utility model provides an engine, the engine that this embodiment provided includes electrical unit 30, a plurality of sensor 40 and the engine pencil that any embodiment of the aforesaid provided, and the engine pencil includes a plurality of branch pencil 10, as shown in fig. 1, and the one end of every branch pencil 10 is connected with electrical unit 30, and the other end is connected with a sensor 40.
The utility model discloses the engine has the advantage the same with the engine pencil in above-mentioned arbitrary embodiment, no longer gives unnecessary details here.
As shown in fig. 1, the engine further includes a transient diode (TVS)50 and a filter capacitor 60, the transient diode 50 being connected between the power line 12 and the ground line 13 of each of the branch harnesses 10, and the filter capacitor 60 being connected between the signal line 11 and the ground line 13 of each of the branch harnesses 10. Wherein, the filter capacitor 60 is used for filtering out the alternating current component; the transient diode 50 is used for protecting a circuit, and in the present embodiment, the transient diode 50 is connected between the power line 12 and the ground line 13, and can change a high impedance between the two electrodes into a low impedance, so as to protect the circuit from being damaged by a surge pulse.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An engine wiring harness is characterized by comprising a plurality of branch wiring harnesses, wherein each branch wiring harness comprises a signal wire, a power wire, a grounding wire and a magnet, the power wire and the signal wire are at least partially wound on the magnet, and the winding direction of the power wire is opposite to that of the signal wire; and a shielding layer is arranged outside each branch wire harness, and two ends of the shielding layer along the length direction of the branch wire harness are grounded.
2. The engine harness according to claim 1, wherein the power supply line wound around the magnet and the signal line wound around the magnet are symmetrically distributed on both sides of the magnet.
3. The engine harness as claimed in claim 1, wherein the magnet includes a first magnetic ring and a second magnetic ring, the power supply wire is wound on the first magnetic ring, and the signal wire is wound on the second magnetic ring.
4. The engine harness of claim 3, wherein the power line is routed around the first magnetic ring in a clockwise direction and the signal line is routed around the second magnetic ring in a counterclockwise direction.
5. The engine harness of claim 3, wherein the power line is wound around the first magnetic ring in a counterclockwise direction and the signal line is wound around the second magnetic ring in a clockwise direction.
6. The engine harness of any one of claims 1-5, wherein the shielding layer is provided as a wire mesh.
7. The engine harness of claim 6, wherein the plurality of wires of the wire mesh are arranged in a diamond-shaped cross-over arrangement.
8. The engine harness according to claim 7, wherein the branch harness is provided with an insulating sheath, and the wire mesh is wrapped around an outer side of the insulating sheath.
9. An engine comprising an electronic control unit and a plurality of sensors, characterized in that the engine further comprises an engine harness according to any one of claims 1 to 8, the engine harness comprising a plurality of branch harnesses, each of which has one end connected to the electronic control unit and the other end connected to one of the sensors.
10. The engine of claim 9, further comprising a transient diode connected between a power line and a ground line of the branch harness, and a filter capacitor connected between a signal line and a ground line of the branch harness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021320760.8U CN212724778U (en) | 2020-07-08 | 2020-07-08 | Engine harness and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021320760.8U CN212724778U (en) | 2020-07-08 | 2020-07-08 | Engine harness and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212724778U true CN212724778U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021320760.8U Active CN212724778U (en) | 2020-07-08 | 2020-07-08 | Engine harness and engine |
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| CN (1) | CN212724778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114927267A (en) * | 2022-04-07 | 2022-08-19 | 东风柳州汽车有限公司 | Anti-electromagnetic interference structure of sensor wire harness and vehicle cable system |
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2020
- 2020-07-08 CN CN202021320760.8U patent/CN212724778U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114927267A (en) * | 2022-04-07 | 2022-08-19 | 东风柳州汽车有限公司 | Anti-electromagnetic interference structure of sensor wire harness and vehicle cable system |
| CN114927267B (en) * | 2022-04-07 | 2024-10-29 | 东风柳州汽车有限公司 | Anti-electromagnetic interference structure of sensor wire harness and vehicle cable system |
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