JP2013222319A - Wiring development device and wiring development method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid mutual overlapping of a plurality of electric wire bundles, and to unify the directions of terminal wiring for each of components to which electric wires are connected.SOLUTION: A wiring development device includes: a storage part for storing, in association with information showing a plurality of electric wire bundles, information showing electric wires included in the electric wire bundles, information showing components to which the electric wires are connected, and three-dimensional data showing the positions of both ends and paths of the electric wires; and a control part for specifying a group in which a plurality of electric wires included in the same electric wire bundle and connected to the same component are included, for determining one direction of the terminal segments of the electric wires included in the specified group for every group, for converting data showing the positions of both ends and paths of the electric wires including the terminal segments from three-dimensional data into two-dimensional data on the basis of the determined direction, and for changing the two-dimensional data showing the positions of both ends and paths of the electric wires in the converted two-dimensional model data such that the electric wire bundles are prevented from being overlapped with each other and that the electric wires are prevented from crossing each other in the case of creating electric wire shapes in accordance with the arrangement of the components in the converted two-dimensional wiring model data.

Description

  The present invention relates to a wiring development device and a wiring development method.

  For example, in a space where multiple parts are concentrated, such as in a computer casing or around an automobile engine, many wires are used to connect parts and send power, control signals, etc. from one part to another. Is done. These electric wires form a group of wires whose positions are adjacent to each other and those having the same system such as a control signal passing through the inside, and are grouped as a wire bundle. By combining them in this way, workability is improved when connecting to a component, or when a cause of failure is identified at the time of failure. Further, by arranging the wire bundle in the space between the components, the vibration of the wires is prevented from interfering with the components. Such a wire bundle is generally called a “wire harness”, and one wire harness includes several to several tens of wires. A plurality of wire harnesses are often used in a certain space.

The design of a wire harness is generally performed using a computer in which an application such as CAD is installed. As a matter of course, the designer determines which position in the space the wire harness starts from, which position passes through, and which position is the destination. At this time, these pieces of information are three-dimensional coordinate values.
On the other hand, when producing a wire harness, a producer often places a production drawing on a work table such as a wiring board, stabs a plane jig thereon, and passes an electric wire between the plane jigs ( (See FIG. 1). At this time, on the production drawing, the positions of the starting point, via point, landing point, etc. of the wire harness must be expressed using two-dimensional coordinate values. For example, Patent Documents 1 and 2 exist as techniques for converting data from three dimensions to two dimensions (also referred to as “development”).

The technique described in Patent Document 1 creates a production drawing that instructs the production of a three-dimensional structure formed of a plurality of wire harnesses on a wiring board.
In the technique described in Patent Document 2, line segments of a plurality of parts overlapped in the vertical direction are copied onto the same plane, and the vertical overlap is expressed on the plane.

International Publication No. 2009/107622 (paragraph 0009) JP 2009-301365 A (Claim 1)

However, in the techniques of Patent Documents 1 and 2, a plurality of electric wire bundles cannot be separated and expressed in a production drawing, and in extreme cases, they are displayed in a state of overlapping. In the techniques of Patent Documents 1 and 2, a plurality of electric wires connected to the same component from different directions are expressed as line segments in different directions in one production drawing (electric wire a in FIG. 1). Is the short side direction of the work table, and the electric wire b is the long side direction). Such a restriction reduces workability when manufacturing the wire bundle. In order to remove such restrictions, it is necessary to separately perform information processing for editing the three-dimensional data at the design stage or the two-dimensional data at the production stage.
Therefore, the present invention efficiently creates a plan view of a wire bundle in which a plurality of wire bundles do not overlap each other and the direction of the end wiring is unified for each connected component. Let it be an issue.

The wiring deployment device of the present invention relates to information indicating a plurality of electric wire bundles, indicates information indicating electric wires included in the electric wire bundle, information indicating components to which the electric wires are connected, and indicates positions of both ends of the electric wires and paths. 3D data, a storage unit storing 3D wiring model data, and a reference to the 3D wiring model data, a plurality of parts included in the same wire bundle and connected to the same component Identify the group containing the wire, determine one direction of the end line segment of the wire included in the specified group for each group, and based on the determined direction, both ends of the wire including the end line segment and The data indicating the position of the route is converted from 3D to 2D, and the converted data is used as 2D wiring model data. In the converted 2D wiring model data, an electric wire shape is created in accordance with the arrangement of the parts. When creating the wire shape, The positions of both ends of the wires and the path in the two-dimensional model data so that the wire bundles do not overlap each other when the bundle is displayed on a flat surface, and so that the wires included in the wire bundle do not cross each other. And a control unit for changing the two-dimensional data indicating.
Other means will be described in the embodiment for carrying out the invention.

  According to the present invention, it is possible to efficiently create a plan view of a wire bundle in a state where a plurality of wire bundles do not overlap each other and the direction of the terminal wiring is unified for each component to be connected. It becomes possible.

It is a figure explaining the working environment of this embodiment. It is an example of the three-dimensional data at the time of the electric wire bundle design which concerns on this embodiment. (A) And (b) is a figure explaining the expansion | deployment which concerns on this embodiment. (A) And (b) is a figure explaining the axis | shaft expression in the two-dimensional plane which concerns on this embodiment. (A) And (b) is a figure explaining unification of the direction of the line segment of the end for every part concerning this embodiment. (A) is a figure explaining the intersection of the electric wire which concerns on this embodiment, (b) is a figure explaining the overlap of the electric wire bundle which concerns on this embodiment. It is a block diagram of the wiring expansion | deployment apparatus which concerns on this embodiment. It is an example of the three-dimensional wiring model data according to the present embodiment. (A) is an example of the wire shape information which concerns on this embodiment, (b) is an example of the wire bundle information which concerns on this embodiment. It is an example of the terminal line segment expansion direction information concerning this embodiment. It is an example of the coordinate value corresponding | compatible information which concerns on this embodiment. It is a flowchart of the process sequence which concerns on this embodiment. It is a flowchart (continuation) of the process sequence which concerns on this embodiment. (A) And (b) is a figure explaining the movement method of the line segment which concerns on this embodiment. It is a figure explaining the electric wire bundle range rectangle which concerns on this embodiment. It is a figure explaining arrangement of an electric wire bundle concerning this embodiment. (A) is a conceptual diagram of the process which unifies the direction of the line segment of a terminal by converting the three-dimensional coordinate value which concerns on this embodiment. (B) is a conceptual diagram of the process which unifies the direction of the line segment of a terminal by converting the two-dimensional coordinate value which concerns on this embodiment. (A) is a conceptual diagram of the process which avoids the intersection of a line segment by converting the three-dimensional coordinate value which concerns on this embodiment. (B) is a conceptual diagram of the process which avoids the intersection of a line segment by converting the two-dimensional coordinate value which concerns on this embodiment. (A) is a conceptual diagram of the process which avoids the overlap of an electric wire bundle by converting the three-dimensional coordinate value which concerns on this embodiment. (B) is a conceptual diagram of the process which avoids the overlap of an electric wire bundle by converting the two-dimensional coordinate value which concerns on this embodiment.

  Hereinafter, a mode for carrying out the present invention (referred to as “the present embodiment”) will be described in detail with reference to the drawings.

  FIG. 2 is an example of three-dimensional data at the time of designing an electric wire bundle. FIG. 2 assumes a space around an automobile engine. The part a, the part b, the part c, the part d, and the part e are individual parts arranged in these spaces. These components are, for example, an engine, a storage battery, a fuel injection device, a microcomputer for generating a signal for fuel injection control, and the like. An electric wire L001 to an electric wire L004 connect a certain component to another component. The electric wire has two end points (● in FIG. 2) at both ends thereof. The end point represents a connection point with any of the parts, one of which is called “origin” and the other is called “landing point”. The electric wire also has one or a plurality of line segments and “nodes” (◎ in FIG. 2) for dividing the line segments. The reason why the electric wire has a broken line shape is that the electric wire avoids the parts and passes through a limited space between the parts.

  Each of the electric wires L001 to L004 is arranged in parallel at the position indicated by reference numeral B001. The reason why such a parallel wiring section exists is not due to accidental arrangement of components, but mainly to improve workability at the time of attaching an electric wire bundle. The section B001 is covered with, for example, a flexible tube so that a plurality of electric wires do not come apart. The unit grouped with flexible tubes is nothing but "wire bundle (= wire harness)".

There is no limit to the number of wires included in one wire bundle. One electric wire connects one part to another part. For example, the electric wire L001 connects the component a and the component e. In some cases, one component has two wire launching and landing points, and each wire is connected to a separate component. For example, as described above, the electric wire L001 connects the component a and the component e, while the electric wire L004 connects the component d and the component e. In this case, it is assumed that the component e performs synchronous control after the operations of the component a and the component d are coordinated with each other.
Furthermore, two parts may be connected by two electric wires. For example, the part b and the part c are connected by the electric wire L002 and the electric wire L003. In this case, it is assumed that the component b and the component c exchange different types of control signals as in the case of sending a signal indicating the temperature of the cooling water and a signal indicating the flow rate.

(Development)
FIG. 3A shows a line segment PA in the three-dimensional space. Since the starting point P overlaps the origin, its coordinate value is P (0, 0, 0). The coordinate value of the node A is A (4,2,1). A method of developing the line segment PA in the three-dimensional space on the two-dimensional plane is as follows.

(1) The control unit (detailed later) of the wiring deployment device acquires the X-axis component, the Y-axis component, and the Z-axis component of the line segment PA. In the illustrated example, the acquired X-axis component is 4, the Y-axis component is 2, and the Z-axis component is 1.
(2) The component having the largest absolute value among the X-axis component, the Y-axis component, and the Z-axis component is specified. The specified component is the X-axis component.
(3) The length of the line segment PA in the three-dimensional space is acquired. The acquired length is 4.58. This length (t) is a calculation result of √ (4 ² +2 ² + 1 ² ).
(4) In a three-dimensional space, draw a sphere centered at the origin and having a radius of t. Hereinafter, reference is made to FIG.
(5) Let A ₂ be the intersection of the sphere and the X axis. Coordinate value of A _{2 is A} 2 (4.58,0,0).

The length of the line segment PA ₂ where Thus was created is the same as the length of the line segment PA. The direction of the line segment PA ₂ is the direction of the X axis. It can be said that the X-axis direction approximates the direction of the line segment PA as compared to the Y-axis direction and the Z-axis direction. Suppose that the coordinate value of the node A is A (2, 4, 1). In this case, A ₂ is a point on the Y axis in FIG. 3B, and its coordinate value is A ₂ (0, 4.58, 0). Similarly, it is assumed that the coordinate value of the node A is A (1, 2, 4). In this case, A ₂ is a point on the Z axis in FIG. 3B, and its coordinate value is A ₂ (0, 0, 4.58). Such A ₂ (4.58,0,0), A ₂ (0,4.58,0) and A ₂ (0,0,4.58) are three-dimensional data each having three component values. It is. However, any of them can be drawn on a two-dimensional plane as a point on the axis.

  In the above description, for the sake of simplicity, it is assumed that the starting point overlaps the origin. Even if this premise is not satisfied, the entire line segment can be translated so that one of two end points (starting point, node or landing point) of the line segment in the three-dimensional space overlaps the origin. Therefore, in the local coordinate system with one end point of any line segment in the three-dimensional space as the origin, the coordinate value of the other end point of the line segment is specified as a point on the X, Y, or Z axis. Will get.

(Axis representation in 2D plane)
The problem is how to represent the third axis in the two-dimensional plane. FIG. 4B shows the solution. An axis that intersects the first axis at an angle θ (0 ° <θ <90 °) that does not overlap the first axis and the second axis may be the third axis.
FIG. 4 (a) shows one electric wire. The coordinate value of the starting point P of the electric wire is P (0, 0, 0), the coordinate value of the first node A is A (4, 2, 1), and the coordinate value of the second node B The value is B (6, 6, 2), and the coordinate value of the landing point C is C (8, 7, 6). Consider drawing the electric wire on a two-dimensional development plane (FIG. 4B).

In FIG. 4A, among the three components of the line segment PA, the X-axis component has the largest absolute value. Therefore, in FIG. 4 the local coordinate system (b) to the origin starting point P ₂ corresponding to the starting point P, the node A ₂ corresponding to the node A is shown as a point on the X axis. At this time, the coordinate value of the node A ₂ in the local coordinate system is A ₂ (4.58, 0). There are two components of coordinate values. That is, the coordinate value is two-dimensional data. The length of the line segment P ₂ A ₂ is 4.58.

Similarly, in FIG. 4A, the Y axis component has the largest absolute value among the three components of the line segment AB. Therefore, in the local coordinate system of FIG. 4B with the node A ₂ corresponding to the node A as the origin, the node B ₂ corresponding to the node B is shown as a point on the Y axis. At this time, the coordinate value of the node B ₂ in the local coordinate system is B ₂ (0, 4.58). There are two components of coordinate values. That is, the coordinate value is two-dimensional data. The length of the line segment A ₂ B ₂ is 4.58.

Further, in FIG. 4A, the Z-axis component has the largest absolute value among the three components of the line segment BC. Therefore, in the local coordinate system of FIG. 4B with the node B ₂ corresponding to the node B as the origin, the landing point C ₂ corresponding to the landing point C is on the Z axis (intersects the X axis at an angle θ). Shown as a dot. At this time, the coordinate value of the landing point C ₂ in the local coordinate system is C ₂ (4.58 × cos θ, 4.58 × sin θ). There are two components of coordinate values. That is, the coordinate value is two-dimensional data. The length of the line segment B ₂ C ₂ is 4.58.
Note that the processing described with reference to FIGS. 3 and 4 will also be supplementarily described with reference to FIG. 11 (details will be described later).

(Unification of the direction of the end line segment for each part)
In FIG. 5A, electric wires 102, 103, 104, and 105 are connected to a certain component 101. The electric wires 102, 103, 104, and 105 have terminal line segments 102 a, 103 a, 104 a, and 105 a, respectively, sandwiched between a starting point (●) and a node (◎). Line segments other than the ends of the respective electric wires 102, 103, 104 and 105 are parallel to either the X axis or the Y axis in the three-dimensional space. However, the line segments 102a, 103a, 104a, and 105a of the terminal are not parallel to any coordinate axis because the starting point is not uniform. For example, the line segments 102a and 103a have an X-axis component and a Z-axis component, and the line segments 104a and 105a have an X-axis component, a Y-axis component, and a Z-axis component.

In FIG. 5 (b), the electric wires 102, 103, 104 and 105 are shown on a two-dimensional development plane. The development plane is an XY development plane having an X axis and a Y axis. For convenience of explanation, in FIG. 5A, the Z axis is taken in the horizontal direction, while in FIG. 5B, the X axis is taken in the horizontal direction. Now, consider developing the line segment 104a in FIG. The line segment 104a has an X-axis component, a Y-axis component, and a Z-axis component. Accordingly, in FIG. 5 (b), the direction of development of the line segment 104a (which axis is parallel) changes depending on which component has the largest absolute value. That is, the line segment 104a is expanded as the line segment 111 when the absolute value of the X-axis component is the largest, and is expanded as the line segment 112 when the absolute value of the Y-axis component is the largest, and the absolute value of the Z-axis component is When it is the largest, it is expanded as a line segment 113.
In addition, in a development plane, when a some electric wire passes the same position, only one electric wire may be described abbreviate | omitted. For example, in reality, four wires pass in parallel at the location indicated by reference numeral 114 in FIG. However, in order to avoid complexity, one electric wire is represented as a representative (hereinafter, the same applies to other drawings).

  Assuming that the component having the largest absolute value among the components of the line segment 104a is the Z-axis component, the line segment 104a is expanded as a line segment 113 in FIG. The direction in which each of the line segments 102a, 103a, and 105a is developed in FIG. 5B does not necessarily coincide with the direction of the line segment 113 (Z-axis direction). However, since the line segments 102a, 103a, 104a and 105a all have a starting point on the same part 101, it is more advantageous for the work efficiency of the wire bundle producer to unify the direction of all these line segments. is there. For example, in FIG. 5B, it is assumed that the line segments at the four ends face the X-axis direction, the Y-axis direction, the Z-axis direction, and the X-axis direction, respectively, in order from the left. The producer will change his orientation at least three times if he tries to pass one cylindrical dressing through each of these line segments. On the other hand, in FIG. 5B, it is assumed that the four end line segments all face the X-axis direction (the direction of the solid line, not the dotted line). At this time, the producer does not need to change his / her orientation, and does not need to stretch his arms or move his / her upper body back and forth.

(Intersection of wires and overlapping of bundles of wires)
The developed plan view (see a1) on the left side of FIG. 6A displays one wire bundle. However, the electric wires intersect at two places. Such an intersection reduces the work efficiency of the producer. Therefore, it is necessary to modify the development plan on the left side as shown in the development plan view on the right side (see a2). The developed plan view (see b1) on the upper side of FIG. 6B displays two wire bundles. However, the wire bundles overlap when the wire bundles intersect at one place. Even if there is such an overlap, the work efficiency of the producer is reduced. Therefore, it is necessary to correct the upper development plan view as shown in the lower development plan view (see b2).

(Wiring expansion device)
The wiring expansion device 1 will be described with reference to FIG. The wiring deployment device 1 is a general computer, and includes a central control device 11, an input device 12 such as a keyboard and a mouse, an output device 13 such as a display, a main storage device 14, and an auxiliary storage device 15. These are connected to each other by a bus. The auxiliary storage device 15 stores three-dimensional wiring model data 31, electric wire shape information 32, electric wire bundle information 33, end line segment development direction information 34, coordinate value correspondence information 35, and two-dimensional wiring model data 36 (details). (Postscript). The three-dimensional wiring information acquisition unit 21, the wire terminal direction unification unit 22, the wire bundle model generation unit 23, the wire shape generation unit 24, and the wire bundle layout unit 25 in the main storage device 14 are programs. Thereafter, when the subject is described as “XX part is”, the central control device 11 (control unit) reads each program from the auxiliary storage device 15 and loads it into the main storage device 14, and then the function of each program. (Details will be described later).

(3D wiring model data)
The three-dimensional wiring model data 31 will be described with reference to FIG. In the three-dimensional wiring model data 31, in association with the background drawing ID stored in the background drawing ID column 201, the background drawing name column 202 has the background drawing name, the wire bundle ID column 203 has the wire bundle ID, The ID column 204 is the electric wire ID, the route column 205 is the route, the origin column 206 is the origin coordinate value, the origin component column 207 is the origin component name, and the origin connector shape column 208 is. Indicates the type of the connector at the starting point, the coordinate value of the landing point in the landing column 209, the name of the component in the landing component column 210, and the connector name column in the landing connector shape column 211. The type, the material name is stored in the core wire material column 212, the usage is stored in the usage column 213, the length is stored in the length column 214, and the diameter is stored in the diameter column 215.

The background drawing ID in the background drawing ID column 201 is an identifier that uniquely identifies the background drawing. A background drawing is a drawing that serves as a background of a plurality of electric wire bundles, such as a drawing of an engine room of an automobile in which a plurality of electric wire bundles for automobile parts are mounted. Note that the state of the three-dimensional space is represented as shown in FIG. 2 by superimposing the background drawing and the three-dimensional wiring model data.
The background drawing name in the background drawing name column 202 is the name of the background drawing.
The wire bundle ID in the wire bundle ID column 203 is an identifier that uniquely identifies the wire bundle.
The electric wire ID in the electric wire ID column 204 is an identifier that uniquely identifies the electric wire.

The route 205 is a route in which the three-dimensional coordinate values of the nodes of the electric wire are arranged in order from the starting point. One (,,) corresponds to one node. The number of (,,) is not limited. Further, the number of (,,) need not be the same for all records (rows of the three-dimensional wiring model data 31).
The coordinate value of the starting point in the starting point column 206 is a three-dimensional coordinate value of the starting point.
The starting part name in the starting part column 207 is the name of the part to which the electric wire is connected at the starting point.
The type of the connector at the starting point in the starting point connector shape column 208 is a type of connector that connects the electric wire and the component at the starting point.

The coordinate value of the landing point in the landing point column 209 is a three-dimensional coordinate value of the landing point.
The part name of the landing in the landing part column 210 is the name of the part to which the electric wire is connected at the landing.
The pointed connector type in the pointed connector shape column 211 is a connector type for connecting an electric wire and a component at the point of landing.
The material name in the core wire material column 212 is the name of the material of the electric wire.
The usage in the usage column 213 is an electrical wire usage. For example, the name of information passing through the electric wire such as “control signal”, the standard of power energy passing through the electric wire such as “DC 10 volts”, and the like.
The length of the length column 214 is the length of the electric wire (unit centimeter).
The diameter of the diameter column 215 is the diameter of the electric wire (unit: millimeter).

  There are as many records of the three-dimensional wiring model data 31 as the number of electric wires. In FIG. 8, “...” Is stored in the columns after the column 205 among the records in the second and subsequent rows. This means that some information is stored in the column in an abbreviated manner. Incidentally, the records in the 1st to 4th rows having the wire bundle ID “B001” in FIG. 8 correspond to the wires included in the wire bundle grouped by the symbol B001 in FIG. 2. More specifically, for example, the record in the first row in FIG. 8 corresponds to the electric wire L001 in FIG.

(Wire shape information)
The electric wire shape information 32 will be described along FIG. In the wire shape information 32, in association with the wire bundle ID stored in the wire bundle ID column 221, the wire ID column 222 has a wire ID, the route column 223 has a route, and the starting point column 224 has a starting point. The part name and coordinate value are stored, the landing part name 225 stores the part name and coordinate value of the landing point, the length field 226 stores the length, and the diameter field 227 stores the diameter.
Although details will be described later, the three-dimensional wiring information acquisition unit 21 extracts only data (necessary records and necessary columns) necessary for the development of electric wires from the three-dimensional wiring model data 31. That is, it can be said that the electric wire shape information 32 is a part of the three-dimensional wiring model data 31 (FIG. 8). Therefore, detailed description of the wire shape information 32 is omitted. However, in the starting point field 224 of FIG. 9A, the information of the starting point field 206 and the starting point part field 207 of FIG. 8 are collectively stored. Similarly, in the score column 225 of FIG. 9A, information of the score column 209 and the score component column 210 of FIG. 8 is collectively stored.

(Wire bundle information)
The wire bundle information 33 will be described along FIG. In the wire bundle information 33, the wire ID is stored in the wire ID column 231 and the number of wires is stored in the number column 233 in association with the wire bundle ID stored in the wire bundle ID column 231.
The wire bundle ID in the wire bundle ID column 231 is the same as the wire bundle ID in FIG.
The electric wire ID in the electric wire ID column 232 is the same as the electric wire ID in FIG. However, here, an electric wire ID for specifying all the electric wires included in the electric wire bundle is stored.
The number of wires in the number column 233 is the number of wires included in the wire bundle.

(End line segment direction information)
The terminal segment development direction information 34 will be described with reference to FIG.
In the terminal line segment development direction information 34, the component name is stored in the component column 242, the wire ID is stored in the wire ID column 243, and the individual deployment method column 244 in association with the wire bundle ID stored in the wire bundle ID column 241. Are stored in the individual deployment direction, the unified deployment direction 1 column 245 stores the unified deployment direction 1, and the unified deployment direction 2 column 246 stores the unified deployment direction 2.

The wire bundle ID in the wire bundle ID column 241 is the same as the wire bundle ID in FIG.
The part name in the part column 242 is the name of the part at the starting point or the landing point.
The electric wire ID in the electric wire ID column 243 is the same as the electric wire ID in FIG. In the end line segment development direction information 34, one end line segment is specified by a combination of a part name and an electric wire ID.
The individual development direction of the individual development method column 244 is the direction of the end line segment connected to the part.
The direction is determined without any consideration of other end line segments connected to the same part.

The unified development direction 1 in the unified development direction 1 column 245 is also the direction of the end line segment connected to the part. The direction is determined based on the component having the largest absolute value of the longest line segment included in the group, with the end line segments belonging to the same wire bundle and connected to the same component as “groups”. .
The unified development direction 2 in the unified development direction 2 column 246 is also the direction of the end line segment connected to the part. The square values of the X-axis components for all line segments included in the “group” are summed to obtain a total X component. Similarly, the total Y component and the total Z component are calculated. The direction is determined based on the largest component among these total components.

Note that the records in the fourth and fifth lines in FIG. The electric wire “L002” and the electric wire “L003” are both included in the electric wire bundle “B001”. Then, the end line segments of the electric wire “L002” and the electric wire “L003” are both connected to the “component c” (see FIG. 2).
Of the line segment components at the end of the electric wire “L002”, the component having the largest absolute value is the Y-axis component. Therefore, the individual deployment direction of the electric wire “L002” is “Y-axis”. Similarly, the component having the largest absolute value among the line segments at the end of the electric wire “L003” is the X-axis component. Therefore, the individual deployment direction of the electric wire “L003” is “X-axis” (see the column 244).

  Comparing the length of the line segment at the end of the electric wire “L002” and the length of the line segment at the end of the electric wire “L003”, the length of the line segment at the end of the electric wire “L003” is longer. Therefore, attention is paid only to the electric wire “L003”. Of the line segment components at the end of the electric wire “L003”, the component having the largest absolute value is the X-axis component. Therefore, the unified deployment direction 1 of the electric wire “L003” is “X-axis”. Accordingly, the unified deployment direction 1 of the electric wire “L002” becomes “X axis” (following the electric wire “L003” regardless of its own component) (see the column 245).

  For the line segment at the end of the wire “L002” and the wire at the end of the wire “L003”, the square values of the X-axis component are summed, the square values of the Y-axis component are summed, and the square of the Z-axis component Sum the values. Of these total components, the largest component is the X-axis component. Therefore, the unified deployment direction 2 of the electric wire “L002” is “X-axis”. Similarly, the unified development direction 2 of the electric wire “L003” is also the “X axis” (see the column 246). It is a coincidence that the unified deployment direction 1 and the unified deployment direction 2 coincide. The reason why the square values of the components are summed is to prevent the positive value and the negative value from canceling each other. For this purpose, an absolute value may be used instead of the “square value”.

  As a matter of course, the development direction is determined not only for the end line segment but for all line segments. The end line segment development direction information 34 is merely information that stores the development direction of the end line segment among all the line segments.

(Relation between 3D coordinate values and 2D coordinate values)
The coordinate value correspondence information 35 will be described with reference to FIG. The explanation is to supplement the contents explained in FIG. 3 and FIG. 4 as a whole. In the coordinate value correspondence information 35, in association with the electric wire ID stored in the electric wire ID column 251, the coordinate value column 252 has a three-dimensional coordinate value, the unfolding coordinate value column 253 has a unfolding three-dimensional coordinate value, In the processing field 254 on the development plane, the processing content on the development plane is displayed, the two-dimensional local coordinate value is displayed in the local coordinate value field 255 on the development plane, and the two-dimensional global coordinate is displayed on the global coordinate value field 256 on the development plane. The value is stored.

The electric wire ID in the electric wire ID column 251 is the same as the electric wire ID in FIG.
The three-dimensional coordinate value in the coordinate value column 252 is a coordinate value such as a node of the electric wire in the three-dimensional space (FIG. 4A).
The development three-dimensional coordinate value in the development coordinate value column 253 is a coordinate value of a node or the like obtained by converting the three-dimensional coordinate value by the method of FIG. The development three-dimensional coordinate value is three-dimensional data having three components. However, two of the three components are “0”. For example, “(4.58, 0, 0)” in the first line is a line segment starting at (0, 0, 0) and ending at (4, 2, 1). This indicates that the length is expanded to a line segment in the X-axis direction having a length of “4.58”. Similarly, “(0, 4.58, 0)” in the second row is a line segment starting at (4, 2, 1) and ending at (6, 6, 2) on the development plane. , It is expanded to a line segment in the Y-axis direction having a length of “4.58”. The same applies to the third line.

The processing content on the development plane in the processing column 254 on the development plane is an explanation of how the line segment is drawn on the development plane.
For example, the processing content on the development plane in the first row is “advance the distance 4.58 to the right on the XY plane”. This description corresponds to the line segment P ₂ A ₂ in FIG. Incidentally, the “XY plane” which is the development plane may be replaced with “XZ plane” or “YZ plane”. However, for example, if the development plane is changed to the “XY plane” instead of the development plane “YZ plane” (the Y axis is the right direction, the Z axis is the upward direction, and the X axis is the upper right direction), the “XY plane” "Go right by distance 4.58" replaces "Go right on YZ plane by distance 4.58".

Similarly, the processing content on the development plane in the second row is “advance on the XY plane by a distance of 4.58”. This description corresponds to the line segment A ₂ B ₂ in FIG. For example, when the development plane is changed to the “YZ plane” instead of the development plane “XY plane”, “up on the XY plane by a distance of 4.58” means “on the YZ plane to the right 4 Instead of "Go forward by .58".

The two-dimensional local coordinate value in the local coordinate value field 255 on the development plane is a two-dimensional coordinate value of the end point of the line segment when a coordinate system having the origin of the line segment on the development plane is provided. .
The two-dimensional global coordinate value in the global coordinate value column 256 on the development plane is a two-dimensional coordinate value of the end point of the line segment when a coordinate system having an arbitrary point as the origin is provided on the development plane. Here, the origin is the starting point of the first line segment. Accordingly, each of the two-dimensional global coordinate value components in the n-th row is a value obtained by accumulating each of the two-dimensional local coordinate value components in the first to n-th rows.
As is clear from the above description, the development of a certain electric wire is the three-dimensional coordinate values (4, 2, 1), (6, 6, 2), (8, 7, 6) in the coordinate value column 252; Are the global coordinate values (4.58,0), (4.58 + 0,0 + 4.58), (4.58 + 0 + 4.58 × cosθ, 0 + 4.58 + 4.58 × sinθ) in the development plane,. It is none other than converting to

(Processing procedure)
The processing procedure of this embodiment will be described with reference to FIG. It is assumed that the three-dimensional wiring model data 31 (FIG. 8) is already stored in the auxiliary storage device 15 as a premise for starting the processing procedure.
In step S301, the three-dimensional wiring information acquisition unit 21 acquires the three-dimensional wiring model data 31.

In step S302, the three-dimensional wiring information acquisition unit 21 creates the wire shape information 32 (FIG. 9A). Specifically, the three-dimensional wiring information acquisition unit 21 firstly, from the three-dimensional wiring model data 31 acquired in step S301, the wire bundle ID, the electric wire ID, the route, the starting coordinate value, and the starting component. The name, the coordinate value of the landing point, the part name of the landing point, the length and the diameter are acquired.
Secondly, the three-dimensional wiring information acquisition unit 21 creates as many new records of the wire shape information 32 (FIG. 9A) as the number of records of the three-dimensional wiring model data 31.
Thirdly, the three-dimensional wiring information acquisition unit 21 thirdly stores the wire bundle column 221, the wire ID column 222, the route column 223, the origin column 224, the landing column 225, the length column 226, and the diameter column 227 of the new record. , Acquired in “first” of step S302, respectively, wire bundle ID, wire ID, route, starting point coordinate value, starting point part name, landing point coordinate value, landing part name, length, and Memorize the diameter.
Fourth, the three-dimensional wiring information acquisition unit 21 rearranges the records of the wire shape information 32 in the ascending order of the wire bundle ID and the ascending order of the wire ID.

In step S303, the three-dimensional wiring information acquisition unit 21 creates the wire bundle information 33 (FIG. 9B). Specifically, the three-dimensional wiring information acquisition unit 21 firstly stores the wire bundle ID (excluding duplicates) stored in the wire bundle ID column 203 of the three-dimensional wiring model data 31 (FIG. 8). Count the number. Then, new records of the wire bundle information 33 (FIG. 9B) are created by the counted number.
Secondly, the three-dimensional wiring information acquisition unit 21 transcribes the wire bundle ID stored in the wire bundle ID column 203 (excluding duplicates) into the wire bundle column 231 of the new record.
Thirdly, the three-dimensional wiring information acquisition unit 21 searches the three-dimensional wiring model data 31 using each wire bundle ID of the new record as a search key, and acquires the electric wire ID of the corresponding record. And the acquired electric wire ID is linked | related with the electric wire bundle ID used as the search key, and memorize | stored in the electric wire ID column 232 of a new record.
Fourthly, the three-dimensional wiring information acquisition unit 21 stores the number of electric wire IDs stored in “third” in step S <b> 303 in the number column 233.
Fifth, the three-dimensional wiring information acquisition unit 21 rearranges the records of the wire bundle information 33 in ascending order of the wire bundle ID.

In step S304, the electric wire end direction unification unit 22 acquires electric wires that are included in the same electric wire bundle and connected to the same component. Specifically, the wire end direction unifying unit 22 firstly acquires the first (top) record among the unprocessed records of the wire bundle information 33 (FIG. 9B), and acquires the acquired record. All wire bundle IDs and wire IDs are acquired.
Secondly, the wire end direction unification unit 22 creates a new record of the end line segment development method information 34 (FIG. 10) twice the number of wire IDs acquired in “first” in step S304 (for the starting point). (And the landing points) only.
Thirdly, the wire end direction unifying unit 22 sets two new records and sets the records acquired in “first” of step S304 in the wire bundle ID column 241 and the wire ID column 243, respectively. The wire bundle ID and the wire ID are stored.
Fourth, the electric wire end direction unifying unit 22 searches the electric wire shape information 32 using the electric wire ID acquired in “first” in step S304 as a search key, and the starting part name and landing point of the corresponding record. Get the part name of. The starting part name is stored in one part column 242 of the new records that are grouped by two, and the landing part name is stored in the other part column 242.
The electric wire terminal direction unification unit 22 fifthly rearranges new records for each part. At this stage, new records are created by “the number of electric wires included in the electric wire bundle × 2”.

In step S305, the electric wire terminal direction unification unit 22 determines the deployment direction. Specifically, the wire end direction unifying unit 22 determines the individual development direction, the unified deployment direction 1 and the unified deployment direction 2 for all new records by the above-described three methods, and the decision result (X-axis, (Y axis or Z axis) are stored in the individual development direction column 244, the unified development direction 1 column 245, and the unified development direction 2 column 246, respectively. Note that the determination and storage of the individual development directions can be omitted. Alternatively, only one of the unified deployment direction 1 and the unified deployment direction 2 may be determined and stored.
The wire end direction unification unit 22 repeats the processes of steps S304 and S305 until there is no record of unprocessed wire bundle information 33 (FIG. 9B).

In step S306, the wire bundle model generation unit 23 subdivides the line segment. Specifically, the wire bundle model generation unit 23 first searches the wire shape information 32 (FIG. 9A) using an unprocessed arbitrary wire bundle ID as a search key, and finds all corresponding records. To get.
Secondly, the wire bundle model generation unit 23 follows the paths of all the records acquired in “first” in step S306 and extracts a common section. A common section is a set of one or more line segments in space through which all wires included in a certain wire bundle pass. The three-dimensional coordinate value of the starting point, the three-dimensional coordinate value of the intermediate node, and the end point It is specified by a three-dimensional coordinate value.
Thirdly, the wire bundle model generation unit 23 adds the three-dimensional coordinate value of the starting point of the common section extracted in “second” in step S306 to the paths of all the records acquired in “first” in step S306. It is determined whether or not two of the three-dimensional coordinate values of the end point are included. If even one is not included, the three-dimensional coordinate value of the start point (and / or end point) not included is added. Remember.
The wire bundle model generation unit 23 repeats the process of step S306 until there is no unprocessed wire bundle ID.

In step S307, the wire bundle model generation unit 23 develops the common section. Specifically, the wire bundle model generation unit 23 first selects an arbitrary development plane. There are three candidates for the development plane: the XY plane, the XZ plane, and the YZ plane.
Secondly, the wire bundle model generation unit 23 develops a line segment (start line segment) closest to the center of gravity of the wire bundle in the common section in the common section. By using the route, the coordinate value of the starting point, and the coordinate value of the landing point stored in the wire shape information 32 (FIG. 9A), the wire bundle model generation unit 23 can calculate the center of gravity for each wire bundle. Can be obtained. Based on the diameter, a three-dimensional coordinate value of the center of gravity may be obtained by weighting each electric wire. Now, the line segment belonging to the common section and closest to the center of gravity of the wire bundle among the line segments of the electric wire “L001” (the first line record in FIG. 9A) is the node (4, 2, 2). ) And nodes (4, 2, 4) at both ends.
Thirdly, the wire bundle model generation unit 23 develops the start line segment on the development plane. That is, (4, 2, 2) and (4, 2, 4) are converted into respective three-dimensional coordinate values for development by the method described above.

Fourthly, the wire bundle model generation unit 23 follows the line segments included in the common section in the same manner in order from the start line segment to the starting point, and obtains the coordinate value of each node until it exits the common section. It is converted into a three-dimensional coordinate value for development. After exiting the common section, the wire bundle model generation unit 23 traces the line segments included in the common section in order from the start line segment to the arrival point, and repeats the same processing.
Note that the wire bundle model generation unit 23 repeats the “third” and “fourth” processes in step S307 for each wire. Since the plurality of electric wires share the nodes included in the common section, the coordinate values of the nodes that have already been converted for other electric wires in the iterative process are simply the existing values, regardless of the method shown in FIG. It is good also as having expanded by substituting for the expansion | deployment 3D coordinate value.

  In step S308, the wire bundle model generation unit 23 develops the specific section. The special section is a line segment other than the common section among the line segments included in the electric wire. Specifically, the wire bundle model generation unit 23 firstly traces the line segments of the specific section in order from the common section to the starting point, and converts the coordinate values of each node into a three-dimensional coordinate value for development. Go. More specifically, when the line segment being processed does not include the start point (the start point column 224 in FIG. 9A), the wire bundle model generation unit 23 determines that the line segment being processed is the end line segment. It is determined that it is not, and the processing for the next line segment is continued. On the other hand, when the line segment being processed includes a starting point (the starting point column 224 in FIG. 9A), the wire bundle model generation unit 23 determines that the line segment being processed is a terminal line segment. Then, the terminal line segment development direction information 34 (FIG. 10) is searched using the wire ID being processed and the part name of the start point (FIG. 9A, start point field 224) as a search key, and the corresponding record. The unified deployment direction 1 or unified deployment direction 2 is acquired. Then, the line segment including the starting point (the line segment at the end) is expanded in the direction of the acquired unified development direction 1 or unified development direction 2. As a matter of course, when the line segment being processed is branched, the wire bundle model generation unit 23 continues the process for all the branched line segments.

Secondly, the wire bundle model generation unit 23 traces the line segments of the specific section in order from the common section to the landing point, similarly to the “first” processing in step S308, and obtains the coordinate value of each node. It is converted into a three-dimensional coordinate value for development.
The wire bundle model generation unit 23 repeats the process of step S308 for all the wires, and after the processing for all the wires is completed, repeats the same processing for the unprocessed next wire bundle.
At the stage where step S308 is completed, the coordinate values of the route field 223, the starting point field 224, and the landing point field 225 for all the records of the wire shape information 32 (FIG. 9A) are changed to the three-dimensional coordinate values for development. It has been converted.

  In step S309, the electric wire shape generation unit 24 converts the three-dimensional coordinate value into a two-dimensional coordinate value. Specifically, the electric wire shape generation unit 24 converts the expansion three-dimensional coordinate values into the two-dimensional global coordinate values (see FIG. 11 column 256) for all the records of the electric wire shape information 32 (FIG. 9A). Convert. At this time, the electric wire shape production | generation part 24 uses the method demonstrated in FIG.4 (b).

In step S <b> 310, the electric wire shape generation unit 24 creates two-dimensional wiring model data 36. Specifically, the wire shape generation unit 24 obtains all the coordinate values of the route of the record having the three-dimensional wiring model data 31 (FIG. 8), the coordinate value of the starting point, and the coordinate value of the landing point of the wire of the record. The electric wire shape information 32 having the ID (FIG. 9A) is replaced with all the coordinate values of the route, the coordinate value of the starting point, and the coordinate value of the landing point. By this replacement, the coordinate value of the three-dimensional wiring model data 31 (FIG. 8) is replaced from the three-dimensional coordinate value to the two-dimensional global coordinate value. The electric wire shape generation unit 24 uses the replaced three-dimensional wiring model data 31 as the two-dimensional wiring model data 36 (FIG. 8, where the coordinate values are two-dimensional).
Thereafter, the wire bundle layout unit 25 creates a wire shape in accordance with the arrangement of components in the two-dimensional wiring model data.

In step S311, the wire bundle layout unit 25 moves the intersecting line segments. Specifically, the wire bundle layout unit 25 first searches the two-dimensional wiring model data 36 (FIG. 8) using an unprocessed arbitrary wire bundle ID as a search key, and acquires all corresponding records. .
Secondly, the wire bundle layout unit 25 acquires a record path, a starting point coordinate value, and a landing point coordinate for an arbitrary electric wire. Then, the line segments are sequentially drawn on the development plane from the line segment close to the center of gravity of the wire bundle toward the starting point. At this time, if the line segment being processed intersects with at least one drawn line segment, the line segment being processed is moved until it does not intersect. At this time, for example, there are the following two specific methods of movement.

(Movement method 1)
When the development plane is the XY plane, the direction in which the node of the line segment being processed is moved is either the X-axis method or the Y-axis direction. The wire bundle layout unit 25 stores in advance the priority in the moving direction and the threshold for each moving direction (limit of the moving distance) in the auxiliary storage device 15, and first moves the node in the positive direction of the X axis. And a process is complete | finished when a crossing is eliminated. If the intersection is not resolved even if the node is moved by the threshold distance, the node moves in the negative direction of the X axis. If the intersection is not resolved even if the node is moved by the threshold distance, the node is moved in the positive direction of the Y axis. If the intersection is not resolved even if the node is moved by the threshold distance, the node moves in the negative direction along the Y axis.
FIG. 14A is a diagram for explaining the moving method 1. In the above figure, line segments are drawn in the order of (1) → (2) → ..., and when the line segment (6) is reached, the line segment (3) intersects. . As shown in the figure below, the wire bundle layout unit 25 is a circle whose radius is equal to the length of the line segment (5) and centered on the node between the line segment (5) and the line segment (4). Draw temporarily. Then, on the circumference, the node on the (5) side of the line segment (6) is slid and the node Q on the line segment (6) is moved in the positive direction of the Y axis to eliminate the intersection. ing. The length of the line segment does not change.

(Movement method 2)
The wire bundle layout unit 25 stores in advance a priority order in the rotation direction (clockwise or counterclockwise) and a threshold value (rotation angle limit) for each rotation direction. Then, a circle whose radius is equal to the length of the line segment being processed is temporarily drawn with the node on the origin side of the line segment being processed as the center. First, the nodes are rotated clockwise along the circumference. And a process is complete | finished when a crossing is eliminated. If the intersection is not resolved even if the node is rotated clockwise by the threshold angle, it moves counterclockwise.
FIG. 14B is a diagram for explaining the moving method 2. In the above figure, line segments are drawn in the order of (1) → (2) → ..., and when the line segment (6) is reached, the line segment (3) intersects. . The wire bundle layout unit 25 eliminates the intersection by rotating the node Q of the line segment (6) clockwise on the circumference as shown in the figure below.

Thirdly, the wire bundle layout unit 25 overwrites the coordinate value of the node for canceling the intersection in the route column 205 of the two-dimensional arrangement model data 36 (FIG. 8).
The wire bundle layout unit 25 repeats the “second” and “third” processing of step S311 for all line segments of a certain electric wire. After the process for a certain wire is completed, the process returns to “first” in step S311 and the same process is repeated for the next unprocessed wire bundle. When there is no unprocessed wire bundle, the process of step S311 ends.

In step S312 of FIG. 13, the wire bundle layout unit 25 determines an area for each wire bundle. Specifically, the wire bundle layout unit 25 first searches the two-dimensional arrangement model data 36 (FIG. 8) using an unprocessed arbitrary wire bundle ID as a search key, and finds the route and starting point of the corresponding record. The coordinate value of and the coordinate value of the landing point are acquired.
Secondly, the wire bundle layout unit 25 is most suitable when the wire bundle is developed on the development plane based on the route, the coordinate value of the starting point, and the coordinate value of the landing point acquired in “first” in step S312. The coordinate value of the point drawn at the upper left (which is naturally two-dimensional) and the coordinate value of the point drawn at the lower right are obtained, and the coordinates of the center of gravity of the wire bundle are obtained.
The wire bundle layout unit 25 repeats the “first” and “second” processing in step S312 until there is no unprocessed wire bundle ID.

Thirdly, the wire bundle layout unit 25 creates the information [wire bundle ID, upper left coordinate value, lower right coordinate value, center of gravity coordinate value] as many as the number of the wire bundles. Arrange from the left in order of increasing X coordinate. Then, [B001, (10, 100), (120, 15), (60, 50)], [B002, (100, 85), (200, 5), (150, 40)], [B003, ( 180, 90), (250, 10), (220, 45)],... This information may be referred to as “wire bundle continuous information”. When the development plane is an XY coordinate, an X coordinate value and a Y coordinate value are stored in (,).
Incidentally, if the wire bundles “B001”, “B002”, and “B003” are simply described on the development plane based on the wire bundle continuation information, it is as shown in FIG. That is, an overlapping portion is generated.

In step S313 of FIG. 13, the wire bundle layout unit 25 arranges the wire bundle. Specifically, the wire bundle layout unit 25 acquires unprocessed [] of the wire bundle continuation information one by one in order from the left, and specifies a rectangle (hereinafter “ (Which may be referred to as a “wire bundle range rectangle”) on the development plane after satisfying the following conditions.
(Condition 1) A wire bundle range rectangle is arranged in order from the upper left of a rectangular region (reference numeral 261 in FIG. 16) indicating the shape of a work table such as a wiring board.
(Condition 2) When there is an arranged wire bundle range rectangle, the distance from the rectangle is maintained by d _h (see FIG. 16), and the wire bundle range rectangle being processed is arranged on the right side. The value of d _h is the user can arbitrarily set.

  In step S314, the wire bundle layout unit 25 determines whether or not the space fits on the work table. Specifically, the wire bundle layout unit 25 determines whether or not the wire bundle range rectangle being processed fits in the rectangular region 261. If not (step S314 “NO”), the process proceeds to step S315. If the condition is resolved (step S314 “YES”), the process proceeds to step S316.

For example, if the wire bundle range rectangle being processed is the dotted wire bundle range rectangle “B004” in FIG. 16, the process proceeds to step S315, and the wire bundle range rectangle being processed is “B003” in FIG. If so, the process proceeds to step S316. The wire bundle layout unit 25 measures the distance d _out that the wire bundle range rectangle being processed protrudes from the rectangular region 261, and the relationship d _out <n × d _h (n is the number of intervals of the wire bundle range rectangle) is established. It determines whether, if satisfied, after a smaller value of d _h until d _out is "0", the wire bundle range rectangle being processed are arranged, may proceed to step S316.

In step S315, the wire bundle layout unit 25 rearranges the wire bundle. Specifically, the wire bundle layout unit 25 arranges the wire bundle range rectangle being processed again on the development plane after satisfying the following conditions.
(Condition 3) While maintaining a distance _dv (see FIG. 16) of the already arranged wire bundle range rectangles that are extended to the lowest, the wire bundle range rectangle being processed is below that Deploy. The value of d _v a user can arbitrarily set.

In step S316, the wire bundle layout unit 25 determines whether all the wire bundles have been arranged. Specifically, when there is an unprocessed [] in the wire bundle continuation information (step S316 “NO”), the wire bundle layout unit 25 returns to step S313. When it does not exist (step S316 “YES”), the wire bundle layout unit 25 changes the coordinate value of the two-dimensional wiring model data 36 (FIG. 8) to the coordinate value after being arranged in step S313 for each wire bundle. Convert or convert to coordinate values after rearrangement in step S315.
Thereafter, the processing procedure is terminated.

(3D processing and 2D processing)
In the above description, the wire end direction unification unit 22 performs the process of unifying the direction of the end line segment for each part in the three-dimensional space (step S305). And after the electric wire shape production | generation part 24 created the two-dimensional wiring model data 34 (step S310), the electric wire bundle layout part 25 moves the crossing line segment (step S311), and arranges and rearranges the electric wire bundle. (Steps S313 and S315). In other words, the unification of the direction of the end line segment is a process of converting the three-dimensional coordinate value, while the avoidance of the crossing of the electric wires and the avoidance of the overlapping of the bundles of the electric wires are processes of converting the two-dimensional coordinate values. However, the electric wire end direction unifying unit 22 can also unify the direction of the end line segment by converting the two-dimensional coordinate value. Conversely, the wire bundle layout unit 25 can avoid crossing of line segments and avoid overlapping of wire bundles by converting the three-dimensional coordinate values. This will be described in detail below (partly overlapping with the above description).

  FIG. 17A is a conceptual diagram of processing for unifying the direction of the end line segment by converting three-dimensional coordinate values. In “before processing”, the end line segments 121a and 122a included in the same wire bundle and connected to the same component have different directions. In “after processing”, the end line segment 121a is directed in the Z-axis direction to become the end line segment 121b, and the end line segment 122a is also directed in the Z-axis direction to become the end line segment 122b.

  FIG. 17B is a conceptual diagram of processing for unifying the direction of the end line segment by converting two-dimensional coordinate values. In “before processing”, the end line segments 123a and 124a included in the same wire bundle and connected to the same component have different directions. In “after processing”, the end line segment 123a is left as it is (oriented in the Z-axis direction), whereas the end line segment 124a is also directed in the Z-axis direction and the end line segment 124b. It has become.

  FIG. 18A is a conceptual diagram of processing for avoiding the intersection of line segments by converting three-dimensional coordinate values. In “before processing”, the line segments 131a and 132a exist in the space. Let the two nodes of the line segment 131a be "node 1" and "node 2". 2 planes including either node 1 or 2 and perpendicular to the X-axis, 2 planes including either node 1 or 2 and perpendicular to the Y-axis, and one of nodes 1 and 2 A region (reference numeral 141a) surrounded by two planes perpendicular to the Z-axis (a total of six planes) is defined as an “enclosing cuboid 141a” of the line segment 131a. Similarly, a circumscribed cuboid 142a of the line segment 132a is defined. In “before processing”, the circumscribed rectangular parallelepiped 141a and the circumscribed rectangular parallelepiped 142a share a certain space (some parts overlap).

  In “after processing”, the line segment 131a and the circumscribed rectangular parallelepiped 141a are not moved. However, the line segment 132a and the circumscribed rectangular parallelepiped 142a are translated in a predetermined direction (in this case, the positive direction of the X axis), and become the line segment 132b and the circumscribed rectangular parallelepiped 142b, respectively. As a result, the circumscribed cuboid 141a and the circumscribed cuboid 142b no longer share a space (do not overlap).

  FIG. 18B is a conceptual diagram of processing for avoiding the intersection of line segments by converting two-dimensional coordinate values. In “before processing”, the line segments 151a and 152a exist on the plane. Line segments 151a and 152a intersect. In “after processing”, the line segment 151a is not moved. However, the line segment 152a rotates in a predetermined direction (in this case, rotates clockwise around one node) to form a line segment 152b. As a result, the line segment 151a and the line segment 152b do not intersect.

  FIG. 19A is a conceptual diagram of processing for avoiding overlapping of bundles of wires by converting three-dimensional coordinate values. In “before processing”, the wire bundles 161a and 162a exist in the space. Two planes perpendicular to the X-axis including the point having the smallest X coordinate value and the point having the largest X coordinate value among the starting point, landing point, and one or more nodes of the wire bundle 161a, the wire bundle 161a Among the starting point, the landing point, and one or a plurality of nodes, two planes perpendicular to the Y axis including any of the point having the smallest Y coordinate value and the point having the largest Y coordinate value, and the wire bundle 161a Of the starting point, landing point, and one or more nodes, two planes that are perpendicular to the Z axis and include either the point with the smallest Z coordinate value or the point with the largest Z coordinate value (a total of six planes) ) The enclosed area (reference numeral 171a) is defined as “the circumscribed rectangular parallelepiped 171a” of the wire bundle 161a. Similarly, a circumscribed rectangular parallelepiped 172a of the wire bundle 162a is defined. In “before processing”, the circumscribed rectangular parallelepiped 161a and the circumscribed rectangular parallelepiped 172a share a certain space (some parts overlap).

  In “after processing”, the wire bundle 161a and the circumscribed rectangular parallelepiped 171a are not moved. However, the wire bundle 162a and the circumscribed rectangular parallelepiped 172a move in parallel in a predetermined direction (in this case, the positive direction of the X axis), and become the wire bundle 162b and the circumscribed rectangular parallelepiped 172b, respectively. As a result, the circumscribed cuboid 171a and the circumscribed cuboid 172b do not share a space (do not overlap).

  FIG. 19B is a conceptual diagram of processing for avoiding overlapping of wire bundles by converting two-dimensional coordinate values. In “before processing”, the wire bundle 181a and the wire bundle 182a exist on a plane. Reference numerals 191a and 192a are the electric wire bundle range rectangles of the electric wire bundle 181a and the electric wire bundle 182a, respectively (the “electric wire bundle range rectangle” has been described in step S313). The wire bundle range rectangle 181a and the wire bundle range rectangle 192a share a certain part (some parts overlap).

  In “after processing”, the wire bundle 181a and the wire bundle range rectangle 191a are not moved. However, the wire bundle 182a and the wire bundle range rectangle 192a are translated in a predetermined direction (in this case, the positive direction of the X axis) to become the wire bundle 182b and the wire bundle range rectangle 192b, respectively. As a result, the wire bundle range rectangle 191a and the wire bundle range rectangle 182b do not share a portion (do not overlap).

Whether the processes of step S305, step S313, and step S315 are performed in a three-dimensional space or a two-dimensional plane depends on the user's setting. In general, when these processes are performed on a two-dimensional plane, the number of processing steps is small and the processing speed is high.
However, there are cases where the automobile manufacturer creates the three-dimensional wiring model data 31 and creates and distributes many copies to the parts manufacturer. In such a case, when these processes are performed in a three-dimensional space, the number of processing steps as a whole is small and the processing speed is high. Any one can be selected in consideration of the actual situation of the designer and producer of the wire bundle.

(Effect of embodiment)
According to the present embodiment, in a parts manufacturer or the like, a manufacturer places a production drawing on a work table such as a wiring board, stabs a flat jig on the work drawing, and passes an electric wire between the flat jigs. Work efficiency is improved.

  The present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention.

1 Wiring unfolding device 11 Central controller (control unit)
12 Input device 13 Output device 14 Main storage device (storage unit)
15 Auxiliary storage device (storage unit)
DESCRIPTION OF SYMBOLS 21 3D wiring information acquisition part 22 Electric wire terminal direction unification part 23 Electric wire bundle model production | generation part 24 Electric wire shape production | generation part 25 Electric wire bundle layout part 31 3D wiring model data 32 Electric wire shape information 33 Electric wire bundle information 34 Terminal line segment expansion direction information 35 Coordinate value correspondence information 36 Two-dimensional wiring model data

Claims (4)

In association with information indicating a plurality of electric wire bundles, information indicating the electric wires included in the electric wire bundle, information indicating the parts to which the electric wires are connected, three-dimensional data indicating the positions of both ends of the electric wires, and a path; A storage unit for storing three-dimensional wiring model data in which is stored;
With reference to the three-dimensional wiring model data, a group including a plurality of the wires included in the same wire bundle and connected to the same component is specified, and the wires included in the specified group Determine the direction of the line segment at the end of
Based on the determined direction, the data indicating the positions of both ends and the path of the electric wire including the end line segment is converted from three dimensions to two dimensions, and the converted data is used as two-dimensional wiring model data,
In the converted two-dimensional wiring model data, an electric wire shape is created in accordance with the arrangement of the parts,
When creating the wire shape, when the wire bundle is displayed on a plane, the wire bundles do not overlap each other, and the wires included in the wire bundle do not cross each other. And a control unit for changing the two-dimensional data indicating the positions of both ends and the path of the electric wire in the two-dimensional model data;
A wiring deployment device comprising: The controller is
Compare the three-dimensional component of the longest length of the end line segments included in the group, identify the component having the largest absolute value among the compared three-dimensional components, and based on the identified component Determine the direction, or
Compare the sum of squares of the values of the three-dimensional components of the end line segments included in the group, identify the component having the largest sum of squares among the three-dimensional components, and based on the identified component Determining the direction,
The wiring expansion device according to claim 1. A wiring deployment method for a wiring deployment device,
The storage unit of the wiring deployment device,
In association with information indicating a plurality of electric wire bundles, information indicating the electric wires included in the electric wire bundle, information indicating the parts to which the electric wires are connected, three-dimensional data indicating the positions of both ends of the electric wires, and a path; 3D wiring model data is stored, and
The control unit of the wiring deployment device,
With reference to the three-dimensional wiring model data, a group including a plurality of the wires included in the same wire bundle and connected to the same component is specified, and the wires included in the specified group Determine the direction of the line segment at the end of
Based on the determined direction, the data indicating the positions of both ends and the path of the electric wire including the end line segment is converted from three dimensions to two dimensions, and the converted data is used as two-dimensional wiring model data,
In the converted two-dimensional wiring model data, an electric wire shape is created in accordance with the arrangement of the parts,
When creating the wire shape, when the wire bundle is displayed on a plane, the wire bundles do not overlap each other, and the wires included in the wire bundle do not cross each other. And changing the two-dimensional data indicating the positions of both ends and the path of the electric wire in the two-dimensional model data,
Wiring expansion method characterized by. The controller is
Compare the three-dimensional component of the longest length of the end line segments included in the group, identify the component having the largest absolute value among the compared three-dimensional components, and based on the identified component Determine the direction, or
Compare the sum of squares of the values of the three-dimensional components of the end line segments included in the group, identify the component having the largest sum of squares among the three-dimensional components, and based on the identified component Determining the direction,
The wiring development method according to claim 3.

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