CN110879911A - Wire harness outer diameter estimation method - Google Patents
Wire harness outer diameter estimation method Download PDFInfo
- Publication number
- CN110879911A CN110879911A CN201911237694.XA CN201911237694A CN110879911A CN 110879911 A CN110879911 A CN 110879911A CN 201911237694 A CN201911237694 A CN 201911237694A CN 110879911 A CN110879911 A CN 110879911A
- Authority
- CN
- China
- Prior art keywords
- outer diameter
- wire harness
- wire
- diameter length
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a wire harness outer diameter estimation method, which comprises the following steps: collecting the outer diameter length of the wires of the wire harness section, and classifying the wires of the wire harness section according to the outer diameter length; counting the number of the leads corresponding to different types; calculating the cross-sectional area of the wire harness section according to a formula according to the type of the wires, the corresponding number of the wires and the length of the outer diameter corresponding to the wires; calculating to obtain the theoretical outer diameter length of the wire harness section according to the cross section area; and obtaining the outer diameter length of the wire harness section according to the theoretical outer diameter length and the thickness of the binding wire. The method of the invention can estimate the outer diameter of the wire harness more accurately.
Description
Technical Field
The invention relates to the technical field of automobile clearance checking, in particular to a wire harness outer diameter estimation method.
Background
Vehicles have become an indispensable vehicle for daily use, and when assembling automobiles, a wire harness section is taken as a most basic object, and related data, such as the diameter, of the wire harness section is required to be accurate before the initial assembly. At present, corresponding calculation is carried out by selecting or checking one by one according to specifications or empirical values of various manufacturers, so that errors are easy to occur, and the efficiency is not high; if it is wrong, the motion analysis is analyzed based on this value, due to all subsequent gap checks. Therefore, once the difference from the actual situation is large, the requirement of the safety clearance can be over met, and the interference is found when the car is actually loaded, or even the assembly cannot be carried out. The current estimation accuracy of the diameter of the beam segment is not high.
Disclosure of Invention
Based on the above, the invention provides a wire harness outer diameter estimation method which can estimate the wire harness outer diameter more accurately.
In order to achieve the purpose, the invention adopts the following technical scheme:
a wire harness outer diameter estimation method comprises the following steps:
collecting the outer diameter length of the wires of the wire harness section, and classifying the wires of the wire harness section according to the outer diameter length;
counting the number of the leads corresponding to different types; calculating the cross-sectional area of the wire harness section according to a formula according to the type of the wires, the corresponding number of the wires and the length of the outer diameter corresponding to the wires;
calculating to obtain the theoretical outer diameter length of the wire harness section according to the cross section area; and obtaining the outer diameter length of the wire harness section according to the theoretical outer diameter length and the thickness of the binding wire.
The further improvement of the scheme is as follows:
the formula is:
wherein S represents the cross-sectional area of the wire harness section, SiThe cross-sectional area of the ith wire is shown.
In the foregoing solution, preferably, the step of calculating the theoretical outer diameter length of the beam segment according to the cross-sectional area includes:
obtaining the theoretical outer diameter length of the wire harness section according to the cross section area through an outer diameter calculation formula; wherein, the outer diameter calculation formula is as follows:
where D is the diameter of the bundle segment and Pi is the circumference ratio.
In the foregoing solution, preferably, the step of acquiring the length of the outer diameter of the wire in the bundle section includes:
and collecting the maximum external diameter of the section of each wire of the wire harness section.
In the foregoing solution, preferably, before the step of obtaining the outer diameter length of the bundle segment according to the theoretical outer diameter length and the thickness of the binding wire, the method further includes:
and judging the thickness of the binding wire according to the binding wire mode.
Preferably, the step of obtaining the outer diameter length of the bundle section according to the theoretical outer diameter length and the thickness of the binding wire comprises:
if the wire is bound by the adhesive tape flower, the outer diameter length of the wire harness section is the sum of the theoretical outer diameter length and twice the thickness of the adhesive tape.
Preferably, the step of obtaining the outer diameter length of the bundle section according to the theoretical outer diameter length and the thickness of the binding wire comprises:
if the wire is wrapped tightly by the adhesive tape, the outer diameter length of the wire harness section is the sum of the theoretical outer diameter length and four times of the thickness of the adhesive tape, and an integral value is obtained.
Preferably, the step of obtaining the outer diameter length of the bundle section according to the theoretical outer diameter length and the thickness of the binding wire comprises:
if the wire is wrapped by the corrugated pipe, the outer diameter length of the wire harness section is the outer diameter length of the corrugated pipe.
According to the scheme, the method for estimating the outer diameter of the wire harness obtains the cross section area of the whole wire harness section by collecting the outer diameter lengths of the wires of the wire harness section, classifying the wires according to the outer diameter lengths, performing superposition calculation statistics, obtaining the theoretical outer diameter length according to the cross section area of the wire harness section, and synthesizing the wire binding mode to obtain the actual outer diameter length of the wire harness section. The method for estimating the outer diameter of the wire harness is more accurate in estimation and is more convenient.
Drawings
Fig. 1 is a schematic flow chart of a wire harness outer diameter estimation method according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described with reference to the accompanying drawings and specific embodiments.
Examples of the invention the process of the invention is first described in the following with the aid of a particularly advantageous example.
The flow of an embodiment of the present invention is shown in fig. 1, where a bundle segment is a collection of all wires bound together with tape or other binder. Considering that the adhesive tape is only wound on the wire harness, the dressing of the sleeve such as the corrugated pipe needs to determine the outer diameter of the wire harness in advance for selection. Therefore, we put this portion of the dressing down first when calculating. Thus, the cross-sectional area of the bundle segment is equal to the sum of the cross-sectional areas of all the wires.
The length of the outer diameter of the wire harness section can be collected firstly, the length of the outer diameter of the wire harness section is directly collected, and the cross sectional area of the wire harness section is calculated according to the sectional area of each wire;
or the wires of the wire harness section can be classified according to the length of the outer diameter; counting the number of the leads corresponding to different types; and calculating the cross-sectional area of the wire harness section according to a formula according to the type of the wires, the corresponding number of the wires and the length of the outer diameter corresponding to the wires.
The overall cross-sectional area can therefore be calculated by the following equation 1:
wherein S represents the cross-sectional area of the wire harness section, SiRepresents the cross-sectional area of the ith wire
By defaulting the cross-section of the beam segment to a circle, the diameter of the beam segment can be calculated by the following equation 2,
where D is the diameter of the bundle segment and Pi is the circumference ratio.
Calculating to obtain the theoretical outer diameter length of the wire harness section according to the cross section area; and obtaining the outer diameter length of the wire harness section according to the theoretical outer diameter length and the thickness of the binding wire.
The German standard lead is thinner than the Japanese standard lead, and is used more and more along with the continuous increase of electric devices of the whole automobile. The lines are also chosen for illustration.
Referring to table 1, table 1 is a german standard lead parameter table, and the maximum outer diameter value is selected for calculation.
TABLE 1 German standard wire parameters
For example, a segment of the wire harness has 4 0.5 wires, 3 1.5 wires, and 2 0.35 wires, and the outer diameter of the segment of the wire harness is determined.
By equation 1 we can solve: s ═ 2x3.1416x (1.4/2)2+4x3.1416x(1.6/2)2+3x3.1416x(2.4/2)2＝24.693。
D obtained from equation 2 is 5.6.
1) If the length of wire is defined as being wrapped with a tape flower, the tape thickness is 0.14, and the diameter of the end of the wire bundle is 5.6+0.14 × 2-5.88, which is an integer of 6mm (mm).
2) If the length of the wire defines a tight winding of the adhesive tape, the thickness of the adhesive tape is 0.14, and the maximum diameter of the wire harness section is 5.6+0.14x2x 2-6.16 mm, which is an integer of 6 mm.
3) If the length of wire defines a bellows wrap, then a 7mm inner diameter bellows may be selected based on a 5.6mm outer diameter of the wire bundle section, which is 10mm outer diameter, and the wire bundle section outer diameter is considered 10 mm. Specific evaluation data are shown in table 2.
TABLE 2 estimated data
| Serial number | Nominal diameter | Inner diameter | Outer diameter | Wall thickness |
| 1 | 3 | 3±0.3 | 5.3±0.3 | ≥0.15 |
| 2 | 5 | 5±0.3 | 7.1±0.3 | ≥0.15 |
| 3 | 6 | 6±0.3 | 9.2±0.3 | ≥0.15 |
| 4 | 7 | 7±0.3 | 10.0±0.3 | ≥0.15 |
| 5 | 8 | 8±0.3 | 11.0±0.3 | ≥0.20 |
| 6 | 10 | 10±0.3 | 12.6±0.3 | ≥0.25 |
| 7 | 12 | 12±0.3 | 15.6±0.3 | ≥0.30 |
| 8 | 13 | 13±0.3 | 16.0±0.3 | ≥0.30 |
| 9 | 14 | 14±0.3 | 18±0.3 | ≥0.30 |
| 10 | 15 | 15±0.3 | 18.6±0.3 | ≥0.40 |
| 11 | 17 | 17±0.4 | 20.8±0.4 | ≥0.40 |
| 12 | 19 | 19±0.4 | 23.6±0.4 | ≥0.40 |
| 13 | 22 | 22±0.4 | 25.3±0.4 | ≥0.40 |
| 14 | 23 | 23±0.4 | 27.3±0.4 | ≥0.40 |
| 15 | 26 | 26±0.4 | 30.9±0.4 | ≥0.40 |
| 16 | 29 | 29±0.4 | 33.6±0.4 | ≥0.40 |
| 17 | 34 | 34±0.4 | 39.8±0.4 | ≥0.40 |
| 18 | 37 | 37±0.5 | 42.3±0.5 | ≥0.40 |
| 19 | 50 | 50±0.3 | 55.3±0.3 | ≥0.40 |
Therefore, when the three-dimensional data of the wire harness is designed/manufactured, the outer diameter of the wire harness can be estimated quickly and conveniently. The accuracy and the design efficiency are improved. The subsequent process comprises the following steps:
gap checking: and setting a correct wire harness diameter parameter value during three-dimensional design.
The accuracy of the three-dimensional design digital-to-analog is directly influenced by the setting of the correct value.
The accurate estimation can make three-dimensional design accurate, easy assembly, and the assembly result is pleasing to the eye, promotes the product property ability to can be directed against analysis clearance etc..
Gap analysis: whether the actual assembly and the upper box cover have interference and the like, how many loose sections need to be reserved and the like
And (3) motion analysis: and precisely analyzing the motion track and the state of the motion part in the digital prototype. The product performance is improved.
Examples are:
traditionally, material tolerances and design tolerance reservations have not been adequately considered.
According to the scheme, the method for estimating the outer diameter of the wire harness obtains the cross section area of the whole wire harness section by collecting the outer diameter lengths of the wires of the wire harness section, classifying the wires according to the outer diameter lengths, performing superposition calculation statistics, obtaining the theoretical outer diameter length according to the cross section area of the wire harness section, and synthesizing the wire binding mode to obtain the actual outer diameter length of the wire harness section. The method for estimating the outer diameter of the wire harness is more accurate in estimation and is more convenient.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A method for estimating an outer diameter of a wire harness, comprising the steps of:
collecting the outer diameter length of the wires of the wire harness section, and classifying the wires of the wire harness section according to the outer diameter length;
counting the number of the leads corresponding to different types; calculating the cross-sectional area of the wire harness section according to a formula according to the type of the wires, the corresponding number of the wires and the length of the outer diameter corresponding to the wires;
calculating to obtain the theoretical outer diameter length of the wire harness section according to the cross section area; and obtaining the outer diameter length of the wire harness section according to the theoretical outer diameter length and the thickness of the binding wire.
2. The wire harness outer diameter estimation method according to claim 1, wherein the formula is:
wherein S represents the cross-sectional area of the wire harness section, SiThe cross-sectional area of the ith wire is shown.
3. The wire harness outer diameter estimation method according to claim 1, wherein the step of calculating a theoretical outer diameter length of the wire harness segment from the cross-sectional area includes:
obtaining the theoretical outer diameter length of the wire harness section according to the cross section area through an outer diameter calculation formula; wherein, the outer diameter calculation formula is as follows:
where D is the diameter of the bundle segment and Pi is the circumference ratio.
4. The wire harness outer diameter estimation method according to claim 1, wherein the step of acquiring the wire outer diameter length of the wire harness section includes:
and collecting the maximum external diameter of the section of each wire of the wire harness section.
5. The method of estimating an outer diameter of a wire harness according to claim 1, wherein the step of obtaining an outer diameter length of a wire harness segment based on the theoretical outer diameter length and a binder wire thickness further comprises:
and judging the thickness of the binding wire according to the binding wire mode.
6. The wire harness outer diameter estimation method according to claim 5, wherein the step of obtaining the outer diameter length of the wire harness section based on the theoretical outer diameter length and the binder wire thickness includes:
if the wire is bound by the adhesive tape flower, the outer diameter length of the wire harness section is the sum of the theoretical outer diameter length and twice the thickness of the adhesive tape.
7. The wire harness outer diameter estimation method according to claim 5, wherein the step of obtaining the outer diameter length of the wire harness section based on the theoretical outer diameter length and the binder wire thickness includes:
if the wire is wrapped tightly by the adhesive tape, the outer diameter length of the wire harness section is the sum of the theoretical outer diameter length and four times of the thickness of the adhesive tape, and an integral value is obtained.
8. The wire harness outer diameter estimation method according to claim 5, wherein the step of obtaining the outer diameter length of the wire harness section based on the theoretical outer diameter length and the binder wire thickness includes:
if the wire is wrapped by the corrugated pipe, the outer diameter length of the wire harness section is the outer diameter length of the corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237694.XA CN110879911A (en) | 2019-12-06 | 2019-12-06 | Wire harness outer diameter estimation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237694.XA CN110879911A (en) | 2019-12-06 | 2019-12-06 | Wire harness outer diameter estimation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110879911A true CN110879911A (en) | 2020-03-13 |
Family
ID=69730048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911237694.XA Pending CN110879911A (en) | 2019-12-06 | 2019-12-06 | Wire harness outer diameter estimation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110879911A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111753376A (en) * | 2020-06-30 | 2020-10-09 | 重庆长安汽车股份有限公司 | Method for determining design size of automobile wire harness |
| CN112287420A (en) * | 2020-11-04 | 2021-01-29 | 东风汽车集团有限公司 | Intelligent wire harness design system |
| CN113836641A (en) * | 2021-09-27 | 2021-12-24 | 浙江吉利控股集团有限公司 | Automobile wire harness outer diameter calculation method, system, medium and equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680330A (en) * | 1994-12-21 | 1997-10-21 | Sumitomo Wiring Systems, Ltd. | Method of and apparatus for calculating diameter of bundle of electric leads |
| US20020161535A1 (en) * | 2001-03-02 | 2002-10-31 | Sumitomo Wiring Systems, Ltd. | Flexure life estimating method, wire harness designing method and program thereof |
| JP2003141949A (en) * | 2001-11-07 | 2003-05-16 | Sumitomo Wiring Syst Ltd | Wire harness designing method and program |
| US7558705B1 (en) * | 2006-03-23 | 2009-07-07 | Dassault Systemes Solidworks Corporation | Connectivity controlled wire routing |
-
2019
- 2019-12-06 CN CN201911237694.XA patent/CN110879911A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680330A (en) * | 1994-12-21 | 1997-10-21 | Sumitomo Wiring Systems, Ltd. | Method of and apparatus for calculating diameter of bundle of electric leads |
| US20020161535A1 (en) * | 2001-03-02 | 2002-10-31 | Sumitomo Wiring Systems, Ltd. | Flexure life estimating method, wire harness designing method and program thereof |
| JP2003141949A (en) * | 2001-11-07 | 2003-05-16 | Sumitomo Wiring Syst Ltd | Wire harness designing method and program |
| US7558705B1 (en) * | 2006-03-23 | 2009-07-07 | Dassault Systemes Solidworks Corporation | Connectivity controlled wire routing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111753376A (en) * | 2020-06-30 | 2020-10-09 | 重庆长安汽车股份有限公司 | Method for determining design size of automobile wire harness |
| CN112287420A (en) * | 2020-11-04 | 2021-01-29 | 东风汽车集团有限公司 | Intelligent wire harness design system |
| CN112287420B (en) * | 2020-11-04 | 2022-11-15 | 东风汽车集团有限公司 | Intelligent wiring harness design system |
| CN113836641A (en) * | 2021-09-27 | 2021-12-24 | 浙江吉利控股集团有限公司 | Automobile wire harness outer diameter calculation method, system, medium and equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110879911A (en) | Wire harness outer diameter estimation method | |
| JP5811892B2 (en) | Exterior material for wire harness | |
| US6330746B1 (en) | Method of determining the length of electric wires for use in constructing a wire harness, and method of constructing a wire harness | |
| US10128027B2 (en) | Electrical wire holder | |
| US9566919B2 (en) | Shield structure for wire harness | |
| US8653372B2 (en) | Wire harness | |
| CN102891421B (en) | Low height connector and manufacture method thereof | |
| JP6996416B2 (en) | Wire harness and its manufacturing method | |
| DE112012007017T5 (en) | Fixing structure, fastening method for a wire connection plate and electric lathe | |
| DE102016207870A1 (en) | Electric wire holding member and wiring harness | |
| CN104051063A (en) | Support and end connection structure of braided wire and employing the support | |
| US20170129423A1 (en) | Shielded conductive path | |
| RU2703447C2 (en) | Wire harness laying device | |
| JP6080341B2 (en) | Wire harness | |
| CN112236912B (en) | Wire harness | |
| US20140062502A1 (en) | Method for identifying emi sources in an electrical system | |
| US20140115876A1 (en) | Manufacturing method of segment coil | |
| US9462730B2 (en) | Shield member and method for manufacturing the same | |
| DE112016006953T5 (en) | Electric rotary machine | |
| JP6496478B2 (en) | Shielded wire and method for manufacturing shielded wire | |
| CN111753376B (en) | Method for determining design size of automobile wire harness | |
| DE102017215948A1 (en) | Connector attachment structure and cable connection | |
| CN111048257A (en) | Automobile communication cable | |
| JP2007115456A (en) | Manufacturing method of wiring harness, wiring harness, and sub harness | |
| CN109075461B (en) | Conductive member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |