JP5303385B2 - Branch layout design support device, branch layout design support method, and branch layout design support program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To support design of a branch layout in consideration of the effect of a clamp of a wire harness. <P>SOLUTION: A route information acquisition means M1 acquires route information, a component information acquisition means M2 acquires component information, and a clamp information acquisition means M3 acquires clamp information. A calculation means M4 calculates, with respect to each of a plurality of different shift positions shifted from a fixing position of the clamp, a holding force of the clamp and an operating force of a branch line based on a route of the branch line shown by the route information, physical properties of the branch line shown by the component information, and performances of the clamp shown by the clamp information. A shift position identification means M5 compares the calculated holding force and operating force with a determination condition to identify a shift position satisfying the determination condition. An allowable tolerance range calculation means M6 calculates a vending angle allowable tolerance range of the branch line corresponding to the identified shift position, and an output means M7 outputs the bending angle allowable tolerance range to support design of the branch layout. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a branch layout design support device for supporting the design of a branch layout of a trunk line and a branch line when a wire harness having a trunk line and a branch line branched from the trunk line is developed on a wiring board, and branching. The present invention relates to a layout design support method and a branch layout design support program.

  Various electronic devices are mounted on automobiles or the like as moving bodies. For this reason, the automobile or the like is equipped with a wire harness in order to transmit electric power from a power source or a control signal from a computer to the electronic device. The wire harness includes a plurality of electric wires and connectors attached to ends of the electric wires.

  The electric wire includes a conductive core wire and a covering portion made of an insulating synthetic resin that covers the core wire. The electric wire is a so-called covered electric wire. The connector includes a conductive terminal fitting and an insulating connector housing. The terminal fitting is attached to an end portion of the electric wire and is electrically connected to the core wire of the electric wire. The connector housing is formed in a box shape and accommodates the terminal fitting.

  When assembling the wire harness, the electric wire is first cut to a predetermined length, and then a terminal fitting is attached to the end of the electric wire. Connect wires as needed. Thereafter, the terminal fitting is inserted into the connector housing. Thus, the wire harness described above is assembled.

  The design of the wire harness is prepared in parallel with the progress of the design of the vehicle or the like to which the wire harness is mounted. Usually, a route layout of a wire harness is requested by a manufacturer such as a vehicle (simply referred to as a car manufacturer), and a component manufacturer that receives the request uses a manufacturing jig to manufacture a wire harness that satisfies the request. Patent Document 1 discloses a wire harness design support system that accurately responds to frequent design changes and improves the design efficiency of the wiring board layout and the associated route layout plan.

  FIG. 14 shows one form of a conventional wire harness manufacturing jig (see Patent Document 1).

  The manufacturing jig 41 includes a rectangular wide substrate 42, a plurality of wiring jigs 43 erected on the substrate 42, a component shelf 44 disposed adjacent to the substrate 42, and a component shelf 44. The component case 45 is provided at least. A wiring board 46 is constituted by the substrate 42 and the plurality of wiring jigs 43.

  The wiring board 46 is supported by the leg 47 in an inclined manner. This is because the operator can easily and efficiently perform the wiring operation of the electric wire 48 on the wiring board 46 having a large depth. When the wiring board 46 is not inclined, the hand cannot reach the rear wiring jig 43 and the wiring workability is poor. In addition, about the wiring board with a narrow depth, it arrange | positions not horizontally but horizontally.

  The wiring is to wire the electric wires 48 in a required shape along the wiring jigs 43 one by one. Parts such as a protective tube 49 and a protector are attached to the plurality of wired wires 48. Terminals (not shown) are crimped to the ends of the electric wires 48, the terminals are inserted into the connector housing, and the connector housing and the terminals constitute the connector 50. Further, the plurality of electric wires 48 are converged by the vinyl tape 51 to complete the wire harness 52.

JP 2004-46815 A

  Further, in the wiring layout design in the conventional wiring board described above, the wiring harness is governed in the wiring board 46 (requirement 1), the assembly workability at the time of manufacture is satisfied (requirement 2), the branch branch Is designed so as to satisfy the three requirements of being arranged in an average distribution (requirement 3).

  Therefore, designing the wiring board layout of a three-dimensional wire harness to meet these requirements results in flattening while bending the three-dimensional wire harness. When the wire harness manufactured in this way is mounted on a vehicle or the like, there is a problem that the shape requested by a car manufacturer or the like is not obtained due to the rigidity of the wire harness.

  Specifically, in FIG. 15, the wire harness W assembled so as to be substantially perpendicular to the trunk line T at the branch point P1 is attached to the vehicle or the like from the branch line B to the attachment point P2 from the branch point P1. Can be folded. At this time, when the harness length L10 of the branch line B from the branch point P1 to the mounting point P2 on the branch line B is compared with the straight line distance L11 that connects the branch point P1 and the mounting point P2 with a straight line, the rigidity of the branch portion The harness length L10 and the linear distance L11 may not coincide with each other depending on the state of convergence by the tape.

  Further, as shown in FIG. 16, when the manufactured wire harness W is attached to the vehicle body or the like, the worker is provided on the branch line Wb while bending the branch line Wb branching from the main line Wm. The clamp C is moved to the vicinity of the mounting hole of the vehicle body, and the clamp C is moved in the insertion direction X to be inserted into the mounting hole and fixed. Then, the operator bends the branch line Wb in the bending direction Y with the fixed clamp C as an axis.

  However, as described above, when the harness length L10 and the linear distance L11 do not coincide with each other, there arises a problem that the clamp C of the branch line Wb cannot be inserted into the mounting hole. In addition, even if the length of the branch line Wb is short or long, the operation force required for the operator to insert the clamp C into the mounting hole increases, and the wearability of the wire harness W deteriorates. In addition to reducing the work efficiency of mounting the wire harness W, there is a problem that a load is applied to a branching portion of the trunk line Wm and the branch line Wb.

  Therefore, in view of the above-described problems, the present invention provides a branch layout design support apparatus, a branch layout design support method, and a branch layout design support capable of supporting the design of a branch layout in consideration of the influence of the clamp of the wire harness. The challenge is to provide a program.

  The branch layout design support apparatus according to claim 1, which is made according to the present invention to solve the above-described problem, has a trunk line and a branch line branched from the trunk line as shown in the basic configuration diagram of FIG. 1, and the trunk line. Supports the design of the branch layout of the trunk line and the branch line when manufacturing the wire harness in which the branch line bent at a desired bending angle is attached to the mating member by clamping onto the wiring board. In the branch layout design support apparatus, the route information acquisition means M1 for acquiring the branch information of the trunk line and the branch line and the route information indicating the fixed position for fixing the clamp, and the component information indicating the physical properties of the wire harness are acquired. Component information acquiring means M2 for performing clamping, information acquiring means M3 for acquiring clamp information indicating the performance of the clamp, and a difference shifted from a fixed position of the clamp The holding force of the clamp corresponding to each of the plurality of shift positions is determined based on the path of the branch line indicated by the path information, the physical property of the branch line indicated by the component information, and the performance of the clamp indicated by the clamp information. A calculation unit M4 that is calculated based on the shift position that compares the holding force calculated by the calculation unit M4 with a predetermined determination condition corresponding to the wire harness and identifies a shift position that satisfies the determination condition The specifying means M5, the allowable tolerance range calculating means M6 for calculating the allowable bending angle range of the branch line corresponding to the shift position specified by the shift position specifying means M5, and the bending calculated by the allowable tolerance range calculating means M6 And an output means M7 for outputting the angle tolerance range in order to support the design of the branch layout.

  According to the branch layout design support apparatus of the present invention described in claim 1, the path information acquisition unit M1 acquires path information, the component information acquisition unit M2 acquires component information, and the clamp information acquisition unit M3 acquires clamp information. . Then, the holding force of the clamp with respect to each of a plurality of different shift positions shifted from the clamp fixed position is determined by the calculation means M4, the branch path properties indicated by the path information, the branch line properties indicated by the component information, and the clamp information. It is calculated based on the performance of the clamp indicated by. Then, the calculated holding force is compared with the determination condition by the shift position specifying means M5, and the shift position that satisfies the determination condition is specified. Then, an allowable tolerance range calculation means M6 calculates a bending angle allowable tolerance range of the branch line corresponding to the specified shift position, and the bending angle allowable tolerance range is output by the output means M7, for example, a display device, a printer, a communication device or the like. Are output to support the design of the branch layout. The desired bending angle is an arbitrary bending angle (mounting angle) within a bending angle allowable tolerance range.

  As shown in the basic configuration diagram of FIG. 1, the invention according to claim 2 is the branch layout design support device according to claim 1, wherein the calculation means M4 includes a plurality of different shifts shifted from the clamp fixed position. The operating force of the branch line corresponding to each shift position is based on the branch line path indicated by the path information, the physical properties of the branch line indicated by the component information, and the performance of the clamp indicated by the clamp information. The shift position specifying means M5 is a means for calculating the shift position satisfying the determination condition by comparing the calculated holding force and operation force with the determination condition. .

  According to the branch layout design support apparatus of the present invention described in claim 2, the holding force of the clamp and the operation force of the branch line for each of a plurality of different shifting positions shifted from the clamp fixing position are calculated. It is calculated by the means M4 based on the branch path indicated by the path information, the physical properties of the branch lines indicated by the component information, and the clamp performance indicated by the clamp information. Then, the calculated holding force and operating force are compared with the determination condition by the shift position specifying means M5, and the shift position satisfying the determination condition is specified.

  According to the third aspect of the present invention, as shown in the basic configuration diagram of FIG. 1, in the branch layout design support device according to the first or second aspect, the shift position specifying means M5 includes a plurality of shifts that satisfy the determination condition. It is means for specifying the maximum shift position from among the positions, and the allowable tolerance range calculation means M6 is means for calculating a bending angle allowable tolerance range corresponding to the maximum shift position.

  According to the branch layout design support device of the present invention described in claim 3, when the maximum shift position is specified from among the plurality of shift positions satisfying the determination condition by the shift position specifying means M5, the allowable tolerance range. The calculation means M6 calculates a bending angle allowable tolerance range corresponding to the maximum shift position.

  According to a fourth aspect of the present invention, as shown in the basic configuration diagram of FIG. 1, in the branch layout design support apparatus according to any one of the first to third aspects, the calculation means M4 has a holding force of the clamp. And the shift position specifying means M5 compares both the holding force and the operation force with the determination condition, and a shift position that satisfies the determination condition. It is a means to specify.

  According to the branch layout design support apparatus of the present invention described in claim 4, when both the holding force of the clamp and the operation force of the branch line are calculated by the calculation means M4, the condition satisfying the determination condition is shifted from these. The position is specified by the shifted position specifying means M5.

The branch layout design support method according to claim 5, which is made according to the present invention to solve the above-mentioned problem, has a trunk line and a branch line branched from the trunk line, and is bent from the trunk line at a desired bending angle. Use any one of the above-described branch layout design support devices to design a branch layout of the trunk line and the branch line when a wire harness to be attached to a mating member with a clamp is developed on a wiring board. In the branch layout design support method to be supported, the route information acquisition means acquires route information indicating a branch position of the trunk line and the branch line and a fixed position for fixing the clamp, and the component information acquisition means includes component information acquiring process of acquiring a component information indicating the physical properties of the wire harness, said clamping information acquisition unit shows the performance of the clamp A clamp information acquisition step of acquiring the lamp information, the calculating means, the holding force of the clamp corresponding to each of plurality of different shift positions shifted from the fixed position of the clamp, the branch line in which the path information indicates Calculation process based on the physical property of the branch line indicated by the part information and the performance of the clamp indicated by the clamp information, and the shift position specifying means is provided on the calculated holding force and the wire harness. Correspondingly, a shift position specifying process for comparing a predetermined determination condition and specifying a shift position satisfying the determination condition, and the allowable tolerance range calculation means, the branch line corresponding to the specified shift position songs bending angle tolerance range, the tolerance range calculation step of calculating in order to support the branch layout design, the output unit, that the calculation of the An output step of outputting the angular tolerance range, and having a.

  According to the branch layout design support method of the present invention described in claim 5, when the path information, the component information, and the clamp information are respectively acquired, each of a plurality of different shift positions shifted from the clamp fixed position is obtained. The holding force of the clamp is calculated based on the branch path indicated by the path information, the physical properties of the branch lines indicated by the component information, and the clamp performance indicated by the clamp information. Then, the calculated holding force is compared with the determination condition, and a shift position that satisfies the determination condition is specified. Then, a bending angle allowable tolerance range of the branch line corresponding to the specified shift position is calculated, and the bending angle allowable tolerance range is calculated by, for example, a display device, a printer, a communication device, etc. to support the design of the branch layout. Output.

  The branch layout design support program according to claim 6, which is made according to the present invention to solve the above problems, has a trunk line and a branch line branched from the trunk line, as shown in the basic configuration diagram of FIG. 1, and the trunk line Supports the design of the branch layout of the trunk line and the branch line when manufacturing the wire harness in which the branch line bent at a desired bending angle is attached to the mating member by clamping onto the wiring board. The branch layout design support device computer performs route information acquisition means M1 for acquiring route information indicating a branch position of the trunk line and the branch line and a fixed position for fixing the clamp, and component information indicating physical properties of the wire harness. Component information acquisition means M2 for acquiring the clamp information acquisition means M3 for acquiring clamp information indicating the performance of the clamp, and whether the clamp is fixed The holding force of the clamp corresponding to each of a plurality of different shifted positions is determined by using the path of the branch line indicated by the path information, the physical properties of the branch line indicated by the component information, and the clamp information indicated by the clamp information. The calculation means M4 that is calculated based on the performance, the holding force calculated by the calculation means M4 is compared with a determination condition that is predetermined for the wire harness, and a shift position that satisfies the determination condition is specified. Shift position specifying means M5, allowable tolerance range calculating means M6 for calculating a bending angle allowable tolerance range of the branch line corresponding to the shift position specified by the shift position specifying means M5, and the allowable tolerance range calculating means M6. A branch layout setting for causing the calculated bending angle allowable tolerance range to function as output means M7 for outputting to support the design of the branch layout. Is a support program.

  When the computer that has executed the branch layout design support program according to the present invention described in claim 6 acquires the path information, the component information, and the clamp information, the computer outputs the information to each of a plurality of different shift positions shifted from the clamp fixed positions. The holding force of the clamp is calculated based on the branch path indicated by the path information, the physical properties of the branch indicated by the component information, and the clamp performance indicated by the clamp information. Then, the computer compares the calculated holding force with the determination condition, and specifies a shift position that satisfies the determination condition. Then, the computer calculates a bending angle allowable tolerance range of the branch line corresponding to the specified shift position, and supports the design of the branch layout for the bending angle allowable tolerance range to a display device, a printer, a communication device, etc. For output.

  According to the present invention described above, the shift position where the holding force satisfies the determination condition is specified from the plurality of different shift positions shifted from the clamp fixing position, and the bending angle of the branch line corresponding to the shift position Since the tolerance tolerance range is calculated and the branch layout design is supported, the designers can refer to the tolerance angle tolerance range of the branch line considering the influence of the clamp on the wire harness. The length of the branch line and the bending angle can be designed accurately. Therefore, when a flat-deployed wire harness is attached to the mating member, the clamp of the branch line cannot be inserted into the mounting hole of the mating member, and the burden on the operator for inserting the clamp into the mounting hole increases. Therefore, it is possible to eliminate a problem such as detachment of the wire harness. Therefore, it is possible to prevent a reduction in work efficiency when the wire harness is mounted, and to reduce a load on a branch portion between the trunk line and the branch line.

  In addition to the holding force of the clamp, the branch line operation force is calculated, and the shift position is specified based on the holding force and the operation force, thereby supporting the design of the branch layout based on the easy-to-operate shift position. Therefore, it can contribute to the improvement of work efficiency.

It is a block diagram which shows the basic composition of the branch layout design support apparatus which concerns on this invention. It is a figure which shows an example of the three-dimensional shape of a wire harness, (a) is a general view, (b) has each shown the enlarged view of the part A in (a). It is a figure for demonstrating the trunk line, branch line, and bending point which concern on this invention. It is a block diagram which shows an example of schematic structure of a branch layout design support apparatus. It is a figure for demonstrating an example of a branch layout design support program and various information. It is a figure which shows an example of the wiring layout which shows the wiring planar shape when a wire harness is expand | deployed on a wiring board. It is a figure for demonstrating the relationship between a branch line and a clamp. It is a figure for demonstrating the relationship between arrangement | positioning of branch line Wb with respect to a bending point, and reach distance, (a) has shown before mounting | wearing, (b) has each shown after mounting | wearing. It is a graph which shows the change of the operation force corresponding to several shift distance, and holding force. It is a graph which shows the change of insertion force corresponding to a plurality of shift distances. It is a graph which shows an example of the operating force determination range and the holding force determination range. 5 is a flowchart illustrating an example of a branch layout design support process executed by a CPU in FIG. 4. It is a figure which shows the bending angle tolerance tolerance range corresponding to a bending point. It is a figure which shows one form of the wiring apparatus using the conventional wiring jig. It is a figure which shows the mismatch of the harness length and linear distance from a branch point to a mounting point. It is a figure for demonstrating the conventional problem when mounting | wearing the wire harness manufactured by plane expansion | deployment with a clamp.

  Hereinafter, an embodiment in the case of supporting the design of a wiring layout showing a wiring plan shape when a wire harness (W / H) is developed on a wiring board using the branch layout design support device according to the present invention. Will be described with reference to the drawings of FIGS.

  As shown in FIG. 2A, the wire harness W is mounted on a vehicle or the like in a three-dimensional shape (three-dimensional shape). The wire harness W includes a plurality of electric wires (electric wire bundles) W1 and a connector W2 attached to an end portion of the electric wires W1. The electric wire W1 includes a conductive core wire and a covering portion made of an insulating synthetic resin that covers the core wire. The connector W2 includes a conductive terminal fitting and an insulating connector housing.

  As shown in FIGS. 2B and 3, the wire harness W includes a trunk line Wm and a branch line Wb branched from the trunk line Wm. In the best mode, a case where the branch points P11 to P15 where the branch line Wb branches from the main line Wm and the bending point P16 where the main line Wm is bent are used as the bending point P1 will be described. That is, at the bending point P1 with respect to the branch points P11 to P15, the trunk line Wm corresponds to the reference electric wire, the branch line Wb corresponds to the bending target electric wire, and at the bending point P1 corresponding to the bending point P16, the main line Wm corresponds to the reference line and It corresponds to the electric wire to be bent.

  The branch line Wb branches (crosses) at the mounting angle θe with respect to the main line Wm (mounting route). That is, in the three-dimensional wire harness W, the mounting angle θe is set for each branch line Wb. The mounting angle θe is designed based on the path of the wire harness W instructed by a car manufacturer or the like.

  In addition, about the bending point P1, the reference point of various electric wires to be bent, such as a bending point that is bent so as to be within the wiring board 30 (see FIG. 6) and branch points P13 and 14 where the grandchild line branches from the branch line Wb. Can be set. Then, the setting of the bending point P1 to be supported can be set to various embodiments such as allowing the designer to select or automatically calculating the bending point P1.

  In FIG. 4, the branch layout design support apparatus 10 uses a well-known personal computer (personal computer), and has a central processing unit (CPU) 11 that controls the operation of the entire apparatus according to a predetermined program. doing. The CPU 11 is a readable / writable memory having a ROM 12 which is a read-only memory storing a program for the CPU 11 via the bus B, and a work area for storing various data necessary for the processing work of the CPU 11. A certain RAM 13 is connected.

  A storage device 14 is connected to the CPU 11 via a bus B, and a hard disk device, a large-capacity memory, or the like is used as the storage device 14. As shown in FIG. 5, the storage device 14 has a storage area for storing various information such as a branch layout design support program P, route information D1, manufacturing information D2, mounting requirement information D3, part information D4, and clamp information D5. Have. The wiring layout design support program P is installed from a CD-ROM or the like, or downloaded via a network and stored in the storage device 14.

  The branch layout design support program P includes a trunk line Wm and a branch line Wb branched from the trunk line Wm, and the branch line Wb bent from the trunk line Wm at a desired bending angle is the clamp C (see, for example, FIG. 16). The CPU (computer) of the branch layout design support apparatus that supports the design of the branch layout of the trunk line Wm and the branch line when the wire harness W to be mounted on the mating member is developed on the wiring board 30 in a flat manner. 11), the route information acquiring means for acquiring the branch information of the trunk line Wm and the branch line Wb and the route information D1 indicating the fixing position for fixing the clamp C, and the component information D4 indicating the physical properties of the wire harness Component information acquisition means, clamp information acquisition means for acquiring clamp information D5 indicating the performance of the clamp C, and whether the clamp C is fixed For each of a plurality of different shifted positions, at least one of the holding force of the clamp C and the operating force of the branch line Wb, the path of the branch line Wb indicated by the path information D1 and the part information D4 Corresponding to the wire harness W, a calculating means for calculating based on the physical properties of the branch line Wb shown and the performance of the clamp C indicated by the clamp information D5, and at least one of the holding force and the operating force calculated by the calculating means The shift position specifying means for specifying the shift position satisfying the determination condition by comparing with a predetermined determination condition, and the bending angle of the branch line Wb corresponding to the shift position specified by the shift position specifying means An allowable tolerance range calculating means for calculating the allowable tolerance range; and an output means for outputting the bending angle allowable tolerance range calculated by the allowable tolerance range calculating means. It has become a program.

  The path information D1 includes three-dimensional shape data such as CAD (computer aided design) indicating the wire harness W shown in FIG. 2, circuit diagram data of the wire harness W, and clamp position data of the clamp C. Yes. The route information D1 is provided corresponding to the product number of the wire harness W, and is acquired and stored from a predetermined database according to the design of the wiring layout, or stored in the storage device 14 or the like. Different embodiments can be provided.

  The manufacturing information D2 includes identification data indicating the type and the like of the wiring board 30 used for manufacturing, dimension data indicating the size of the wiring board 30 (for example, 900 mm long × 1400 mm wide), wiring possible area data, have. The manufacturing information D2 is provided corresponding to the product number of the wire harness W and the like.

  The mounting requirement information D3 includes determination condition data indicating the holding force range of the clamp C corresponding to the branch points P11 to P15 described above, the operating force range of the operator's branch line Wb, the insertion force range of the clamp C, and the like. have. In addition, although a present Example demonstrates the case where mounting requirement information D3 shows both a holding force range and an operating force range, it can also be set as the Example which shows only any one.

  The component information D4 includes various data such as the product number, size, physical properties, and shape of the wire harness W. The physical property data is data indicating the bending characteristics, strength, and the like of the trunk line Wm and the branch line Wb in the wire harness W. The component information D4 can be various different embodiments such as associating with the route information D1 or incorporating it into the route information D1.

  The clamp information D5 includes various data such as a product number of the clamp C used in the wire harness W, a mounting position with respect to the wire harness W, and performance. The performance data is, for example, data such as the holding force of how much kg can be withstood when the clamp C is attached to the mating member. The clamp information D5 is associated with at least one of the route information D1 and the component information D4. As is well known, the clamp C includes a mounting portion that is mounted on the wire harness W, and an insertion portion that is integrally provided on the outer peripheral surface of the mounting portion and is inserted into an insertion port of a counterpart member such as a vehicle body. , And is formed of a synthetic resin or the like.

  Further, an input device 15, a communication device 16, a display device 17, and the like are connected to the CPU 11 via a bus B. The input device 15 includes a keyboard, a mouse, and the like, and outputs input data corresponding to an operation of a designer or the like to the CPU 11. The communication device 16 uses a communication device such as a LAN card or a cellular phone modem. Then, the communication device 16 outputs the received information to the CPU 11 and transmits the information input from the CPU 11 to the designated transmission destination.

  As the display device 17, various display devices such as a known liquid crystal display and CRT are used. The display device 17 displays various information under the control of the CPU 11. That is, the display device 17 displays various screens that support the design of the branch layout based on the various pieces of information, and supports the design of the designer.

  Next, the relationship between the arrangement of the branch line Wb of the wire harness W and the reach distance will be described below with reference to the drawings of FIGS.

  First, as shown in FIG. 7, attention is paid to a bending point P1 of a part of the branch line Wb perpendicular to the trunk line Wm of the wire harness W developed in a plane. The movement range of the clamp C provided on the branch line Wb is a design movable range R1 indicated by a wavy line in FIG. 7, and is a substantially semicircle having the length L of the branch line Wb as a radius. However, when the clamp C is manufactured, the branch line Wb becomes more difficult to bend linearly as the difference between the manufacturing angle θm and the mounting angle θe increases due to the rigidity, structure, and the like. Therefore, the range of the distance that the clamp C actually reaches is an actual movable range R2 indicated by a solid line in FIG. 7, and is a moving range narrower than the movable range R1 by design. The manufacturing angle θm indicates the angle of the branch line Wb with respect to the trunk line Wm at the time of manufacturing.

  The branch line Wb developed in a plane becomes a linear design path Ld in design when the branch line Wb is bent by the mounting angle θe, but the actual branch line Wb is not linear but is arcuate. It bends and is mounted as a path Lr at the time of mounting. As a result, as shown in FIG. 8 (a), considering the reach distance of the branch line Wb according to the mounting angle θe, the branch line Wb is shifted to the branch length L, which is the design length, and the distance dL is added. (L + dL) needs to be designed. Accordingly, as shown in FIG. 8B, when the branch line Wb is bent by the mounting angle θe, the clamp C is positioned from the manufacturing position Pf to the desired mounting position Pm even if the branch line Wb is bent. Is possible.

  Next, the result of measuring the mounting property of the branched branch line Wb with respect to the bending point P1 shown in FIG. 8 will be described below. As an example of the mounting property, attention is paid to the operating force and holding force of the branch line Wb and the insertion force of the clamp C. The operating force is a force applied to the branch line Wb during the bending operation. The insertion force is a force applied to the clamp C when the insertion portion of the clamp C is inserted into the insertion port of the counterpart member. The measurement conditions are shown in Table 1.

  In this measurement, when the manufacturing angle θm is 90 degrees and the mounting angle θe is 60 degrees, the shift distance dL is shifted by three different shift distances dL from the mounting position Pm, so that the operating force and the holding force are maintained. Each of the force and the insertion force is measured. And the measurement result of mounting force is the graph of FIG. 9, and the measurement result of insertion force is the graph of FIG. In each of the graphs of FIGS. 9 and 10, the vertical axis represents force (Kg) and the horizontal axis represents elapsed time (seconds). Note that. The time on the horizontal axis in FIGS. 9 and 10 is the elapsed time from the start of the operation of bending from the manufacturing angle θm to the mounting angle θe, and the change in operating force and holding force with respect to the branch line Wb or the clamp C, respectively. Show.

  In FIG. 9, a graph G10 shows a shift distance dL of 0 mm, a graph G11 shows a shift distance dL of 5 mm, a graph G12 shows a shift distance dL of 10 mm, and a graph G13 shows a shift distance dL of 16 mm. When the shift distance dL is 0 mm, the operating force increases from about 15 seconds, reaches a maximum operating force of about 3.5 kg, and then decreases to about 1 kg and stabilizes. That is, the holding force when the shift distance dL is 0 mm is about 1 kg.

  When the shift distance dL is 5 mm, even if the branch line Wb and the clamp C are operated, the operation force does not increase and remains constant at about 0.2 Kg. Therefore, the holding force remains about 0.1 Kg. It was. That is, since the operating force and the holding force when the shift distance dL is 5 mm remained close to 0 kg, the operator applied the clamp C to the other party without applying extra force to the branch line Wb and the clamp C. Can be inserted into the insertion slot of the member.

  When the shift distance dL is 10 mm, the operating force increases in the reverse direction from about 13 seconds, and after reaching the maximum operating force of about −3.2 Kg, it decreases to about −1 Kg and stabilizes. That is, the holding force when the shift distance dL is 10 mm is about −1 Kg. Similarly, when the shift distance dL is 16 mm, the operating force increases in the reverse direction from the end of 12 seconds, and decreases to about -1.2 Kg after reaching the maximum operating force of about -4.2 Kg. Stabilize. That is, the holding force when the shift distance dL is 16 mm is about −1.2 Kg.

  In FIG. 10, a graph G20 shows a shift distance dL of 0 mm, a graph G21 shows a shift distance dL of 5 mm, a graph G22 shows a shift distance dL of 10 mm, and a graph G23 shows a shift distance dL of 16 mm. When the shift distance dL is 0 mm, the insertion force increases after about 15 seconds, and after reaching the maximum operating force of about -3.9 Kg, it returns to about -0.2 Kg and stabilizes.

  When the shift distance dL is 5 mm, the insertion force increases from about 17 seconds, and after reaching the maximum operating force of about -1.3 Kg, it returns to near 0 Kg and stabilizes. When the shift distance dL is 10 mm, the insertion force increases from about 14 seconds, and after reaching the maximum operating force of about −3 kg, it returns to about 0 kg and stabilizes. When the shift distance dL is 16 mm, the insertion force increases after about 12 seconds, and after reaching the maximum operating force of about −3.7 kg, it returns to near 0 kg and stabilizes.

  9 and 10, when the manufacturing angle θm is 90 degrees and the mounting angle θe is 60 degrees, the shift distance dL corresponding to the graph G11 in FIG. 9 and the graph G21 in FIG. 10 is 5 mm. It can be said that the work load on the worker is small. Therefore, when the manufacturing angle θm is 90 degrees and the mounting angle θe is 60 degrees, the shift distance dL of the branch line Wb is desirably set to 5 mm.

  Accordingly, as shown in FIG. 11, the operating force determination range J1 for the operating force determination time T1 and the holding force determination range J2 for the holding force determination time T2 are determined in advance from the measurement results shown in FIG. Set each. Note that the operating force determination time T1 is in a range including at least the time zone of the graphs G10 to 13 that change in accordance with the above-described operation. The holding force determination time T2 is a range including at least the holding time zone after the operation in the graphs G10 to 13 described above. For the insertion force, an insertion force determination range, a determination threshold value, and the like are set in advance as determination conditions from the measurement results shown in FIG.

  In the present embodiment, the attachment requirement information D3 having determination condition data indicating each of the operation force determination range J1 corresponding to the maximum operation force of the graphs G10 to 13 and the holding force determination range J2 corresponding to the holding force is represented by the wire harness W. Are created in advance corresponding to the type, product number, etc., and stored in the storage device 14 or the like. Note that the determination condition data is not limited to a range, and may be a threshold value, for example. The determination condition data may be data indicating the operating force determination range J1 or the holding force determination range J2.

  By configuring the determination condition data of the mounting requirement information D3 in this way, the branch layout design support device 10 stores a plurality of types of mounting requirement information D3 corresponding to the support target wire harness W or product in the storage device 14 or the like. ing. Note that the storage location of the mounting requirement information D3 may be a storage medium of another computer, for example, as long as the branch layout design support apparatus 10 can access it.

  Next, an example of the branch layout design support process when the CPU 11 described above executes the branch layout design support program P will be described below with reference to the flowchart of FIG. In order to simplify the description, a case will be described in which the branch point P1 for supporting the design is one bending point P1 in FIG.

  When the CPU 11 executes the branch layout design support program P stored in the storage device 14, in step S11 (corresponding to the route information acquisition means), the storage device 14 stores the route information D1 corresponding to the design support target wire harness W. Etc. and stored in the RAM 13, and then the process proceeds to step S12. The design support target wire harness W causes the display device 17 to display an input screen, a selection screen, and the like, and allows a designer or the like to input and select.

  In step S12 (corresponding to the component information acquisition means), the CPU 11 acquires component information D4 corresponding to the design support target wire harness W from the storage device 14 and the like, stores it in the RAM 13, and then proceeds to the processing of step S13. In step S13 (corresponding to the clamp information acquisition means), the CPU 11 specifies the clamp C from the path information D1 in the RAM 13, acquires the clamp information D5 corresponding to the clamp C from the storage device 14 or the like, and stores it in the RAM 13. Then, the process proceeds to step S14.

  In step S14 (corresponding to calculation means), the CPU 11 extracts a branch point P1 to be supported from the route information D1, and shifts distances dL (for example, 0, 0) of a plurality of types of branch lines Wb with respect to the branch point P1. A predetermined shift position such as 5, 10, 16 mm, a plurality of shift positions shifted by a predetermined unit (for example, 2 mm) within a predetermined range of 0 to 16 mm, and the like are set. For each of the different correction positions dL, the CPU 11 determines the path of the branch line Wb based on the path information D1, the manufacturing angle θm and the mounting angle θe, and the physical properties of the branch line Wb based on the component information D4, and the clamp information D5. Based on the above, the performance of the clamp C is specified. The CPU 11 executes a calculation program for obtaining the operation force, holding force, and insertion force from the specified values, stores the calculated operation force, holding force, and insertion force in the RAM 13 in association with each shift distance dL, and then in step S15. Proceed to processing.

  The calculation program uses, for example, values specified from the physical properties of the branch line Wb and the performance of the clamp C as parameters, and a table corresponding to the parameters from among a plurality of tables created based on experiments or the like. Is extracted, and the operating force, holding force, and insertion force are simulated by simulating the operating force for the branch line Wb, the holding force and the inserting force of the clamp C based on the parameters. A simulation program for obtaining the above. Then, as shown in FIGS. 9 and 10, the calculation program calculates the elapsed time from the start of the operation and the corresponding force as the operation force, the holding force, and the insertion force. And this embodiment demonstrates the case where operation force and holding force are calculated | required as graph G14-G16 as shown in FIG.

  In step S15 (corresponding to the shift position specifying means), the CPU 11 compares the operation force, holding force, and insertion force of the RAM 13 corresponding to the shift distance dL with the determination condition data of the mounting requirement information D3, and the comparison result is obtained for each. It is stored in the RAM 13 in association with the shift distance dL. More specifically, the CPU 11 obtains the graphs G14 to G16 shown in FIG. 11 corresponding to each of the plurality of shift distances dL, and the operation force determination range J1 and the holding force determination time T2 at the operation force determination time T1 indicated by the determination data. Then, it is determined whether or not the graphs G14 to G16 are within the holding force determination range J2. When the CPU 11 specifies a graph (graph G15 in FIG. 11) that falls within both the operating force determination range J1 and the holding force determination range J2, the CPU 11 specifies the shift distance dL associated with the graph as the shift position, and then The process proceeds to step S16.

  In step S16 (corresponding to an allowable tolerance range calculation means), the CPU 11 calculates a bending angle allowable tolerance range of the branch line Wb corresponding to the specified shift position. More specifically, as shown in FIG. 12, the CPU 11 determines the position of the branch line Wb with respect to the trunk line Wm based on the mounting position P10, the maximum shift position P11 shifted by the shift distance dL from the mounting position P10, and the component information D4. A bending angle allowable tolerance range is calculated, the bending angle allowable tolerance range is stored in the storage device 14 or the like in association with the bending point P1, and then the process proceeds to step S17.

  An example of a method for calculating the allowable bending angle tolerance range will be described with respect to a bending point P1 shown in FIG. 13 where the trunk line Wm is a reference wire and the bending angle θ of the branch line Wb on the wiring board 30 is set.

  When the manufacturing angle θm in manufacturing is different from the mounting angle θe in mounting, the distance change amount that the wire harness W reaches changes. For example, when the mounting angle θe is about 90 degrees, the distance deformation amount reaches 0 mm, about −4 mm at 60,120 degrees, about −20 mm at 30,150 degrees, and so on. As the distance from 90 degrees increases, the amount of distance deformation reached increases.

  When the manufacturing angle θm and the mounting angle θe on the mounting are different, the reach distance of the branch wire Wb that is the bending target electric wire is shorter than the length of the bending target electric wire, unlike the harness length of the bending target electric wire. If the resulting error is smaller than the allowable dimensional tolerance of the path design, the dimension is accepted, and if it is larger, the dimension is defective.

When the shift distance dL is set as the allowable length of the branch wire Wb, the allowable bending angle tolerance is determined from the relationship between the bending upper limit angle, the bending lower limit angle, the angle difference with respect to the mounting branch angle, and the deformation error. The range θr can be calculated using the following equation.
Bending angle allowable tolerance upper limit = bending upper limit angle-mounting branch angle ... Equation 1
Bending angle tolerance lower limit = bending lower limit angle-mounting branch angle ... Equation 2
Bending angle allowable tolerance range = Bending angle allowable tolerance upper limit-Bending angle allowable tolerance lower limit ... Formula 3
The branch layout design support program P has a bending angle allowable tolerance range calculation program for calculating the equations 1 to 3 described above.

  In step S17 (corresponding to the output means), the CPU 11 sets the calculated shift distance dL (length tolerance of the branch line Wb), bending angle tolerance tolerance θr, bending angle tolerance tolerance upper limit θu, and bending angle tolerance tolerance lower limit θb. The support screen information G shown in FIG. 13 for displaying and supporting the design is generated, and when the display device 17 is requested to display the support screen information, the support screen information G is displayed on the display device 17, Thereafter, the process ends.

  As is clear from the above description, when the CPU 11 executes the branch layout design support program P, the route information acquisition unit M1, the part information acquisition unit M2, the clamp information acquisition unit M3, the calculation unit M4, The CPU 11 (computer) functions as various means such as the shift position specifying means M5, the allowable tolerance range calculating means M6, and the output means M7. Further, in the case where design is supported for a plurality of bending points P1, design support for each bending point P1 is performed by repeating the above-described series of processing in steps S11 to S17 in FIG. 12 for each bending point P1. Do.

  Next, an example of the operation (action) of the above-described branch layout design support apparatus 10 will be described below.

  When designing the branch layout of the wire harness W, the branch layout design support apparatus 10 is activated by a designer or the like. The branch layout design support apparatus 10 causes the designer to input identification information for identifying the wire harness W that is a design support target. The branch layout design support apparatus 10 collects route information D1, manufacturing information D2, mounting requirement information D3, component information D4, clamp information D5, and the like corresponding to the identification information.

  The branch layout design support apparatus 10 extracts necessary parameters from various collected information, and executes the calculation program using the parameters etc., so that a plurality of different bending points P1 can be obtained. The holding force and the operating force corresponding to the type of shift distance dL are calculated. The branch layout design support apparatus 10 compares the calculated holding force and operating force with the determination condition data of the mounting requirement information D3, and determines the determination conditions of both the operating force determination range J1 and the holding force determination range J2 shown in FIG. A graph to be satisfied, that is, a shift distance dL corresponding to the graph is specified. Then, the branch layout design support device 10 calculates the bending angle allowable tolerance range Rs of the branch line Wb from the specified shift distance dL. When there are a plurality of specified shift distances dL, the branch layout design support apparatus 10 creates support screen information based on the bending angle allowable tolerance range Rs corresponding to the maximum shift distance dL, and designs the support image information. Output to the display device 17 for display and support.

  According to the branch layout design support device 10 described above, at least one of the holding force and the operation force satisfies the determination condition from among a plurality of different shift positions shifted from the mounting position (fixed position) P10 of the clamp C. Since the shift position (maximum shift position) P11 is specified and the bending angle allowable tolerance range Rs of the branch line Wb corresponding to the shift position P11 is calculated to support the design of the branch layout, the wire harness W Since the designer or the like can refer to the bending angle allowable tolerance range Rs of the branch line in consideration of the influence of the clamp C on the length, the length and the bending angle of the branch line Wb can be designed accurately. Therefore, when mounting the wire harness W developed in a plane on the mating member, the clamp C of the branch line cannot be inserted into the mounting hole of the mating member, and the burden on the operator for inserting the clamp C into the mounting hole is increased. Therefore, it is possible to prevent a decrease in work efficiency when the wire harness 2 is mounted, and to reduce the load at the branch portion between the main line Wm and the branch line Wb.

  In the above-described embodiment, as illustrated in FIG. 11, the case where it is determined that the operating force falls within the operating force determination range J1 and the holding force falls within the holding force determination range J2 is determined to satisfy the determination condition. The present invention is not limited to this, and for example, various embodiments can be made such that the determination is made by paying attention to only the operation force determination range J1 or only the holding force determination range J2.

  In the above-described embodiment, the case where the plurality of shift distances dL are determined by focusing on the operation force of the branch line Wb and the holding force of the clamp C has been described. However, the insertion of the clamp C described above as a determination item is described. By adding the force item, design support more suitable for the wire harness W to be supported can be performed.

  In the above-described embodiment, the case where the graphs G14 to G16 are obtained as shown in FIG. 11 as to the operating force of the branch line Wb and the holding force of the clamp C has been described, but the present invention is not limited to this. Various embodiments can be adopted.

  For example, the above-described operation force and holding force are actually measured corresponding to each of the plurality of shift distances dL, and the measurement data is stored as a database in association with the attributes of the trunk line Wm, branch line Wb, clamp C, and the like. . The measurement data is data actually measured using force sensors for holding force measurement and operation force. Examples of the attributes of the trunk line Wm include length Lt, diameter Dt, Young's modulus Et, Poisson's ratio γt, mounting position Pt (Xt, Yt, Zt), and the like. Examples of the branch line Wb include length Lb, diameter Db, Young's modulus Eb, Poisson's ratio γb, mounting position Pb (Xb, Yb, Zb), and the like. Examples of the attributes of the clamp C include the size Dc, the mounting position Pc (Xc, Yc, Zc), the mounting direction angle θc, the maximum allowable reaction force Mc, and the like.

  In the present embodiment, the measured operation force and holding force measurement data is stored in a storage medium accessible via the storage device 14 or a network as the measurement information DB 1 indicated by the wavy line in FIG. As an example of the measurement information DB 1, as shown in Table 2, a data structure in which the maximum operation force Fmax and the clamp holding force Me are associated with the branch attribute, the stem attribute, the clamp attribute, and the shift distance dL. Note that the measurement data constituting the measurement information DB 1 may be a minimum value, an average value, etc. in addition to the maximum value, or data indicating the above-described graphs G14 to G16.

  The maximum operating force Fmax of the measurement information DB1 is the maximum value of the operating force when the branch line Wb is attached as shown in FIG. Similarly, the holding force Me is a value indicating the holding force when the clamp C is stably attached. Therefore, by using the measurement information DB 1 having such a configuration, it is possible to specify the maximum operating force Fmax and the holding force Me corresponding to the three attributes and the shift distance as parameters.

  As described above, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Branch layout design support apparatus M1 Path | route information acquisition means M2 Parts information acquisition means M3 Clamp information acquisition means M4 Calculation means M5 Shift position specification means M6 Allowable tolerance range calculation means M7 Output means

Claims (6)

A wire harness that has a trunk line and a branch line branched from the trunk line, and in which the branch line bent from the trunk line at a desired bending angle is attached to a mating member with a clamp, is developed on a wiring board in a planar manner. In the branch layout design support device that supports the design of the branch layout of the trunk line and the branch line when
Route information obtaining means for obtaining route information indicating a branch route of the trunk line and the branch line and a fixed position for fixing the clamp;
Component information acquisition means for acquiring component information indicating physical properties of the wire harness;
Clamp information acquisition means for acquiring clamp information indicating the performance of the clamp;
The holding force of the clamp corresponding to each of a plurality of different shifting positions shifted from the clamp fixing position, the branch path indicated by the path information, the physical properties of the branch indicated by the component information, and the clamp Calculating means for calculating based on the performance of the clamp indicated by the information;
A shift position specifying means for comparing the holding force calculated by the calculation means with a predetermined determination condition corresponding to the wire harness and specifying a shift position satisfying the determination condition;
Allowable tolerance range calculating means for calculating a bending angle allowable tolerance range of the branch line corresponding to the shifted position specified by the shifted position specifying means;
An output means for outputting the bending angle allowable tolerance range calculated by the allowable tolerance range calculating means for supporting the design of the branch layout;
A branch layout design support apparatus characterized by comprising: The calculation means has the branch line indicated by the path information and the branch indicated by the component information indicating the operation force of the branch line corresponding to each of a plurality of different shift positions shifted from the clamp fixed position. A means for calculating based on physical properties of the line and the performance of the clamp indicated by the clamp information;
2. The branch according to claim 1, wherein the shift position specifying unit is a unit that specifies the shift position that satisfies the determination condition by comparing the calculated holding force and operation force with the determination condition. Layout design support device. The shift position specifying means is a means for specifying a maximum shift position from a plurality of shift positions that satisfy the determination condition;
3. The branch layout design support apparatus according to claim 1, wherein the allowable tolerance range calculating unit is a unit that calculates a bending angle allowable tolerance range corresponding to the maximum shift position. The calculating means is means for calculating both the holding force of the clamp and the operating force of the branch line;
The shift position specifying means is means for comparing both the holding force and the operation force with the determination condition to specify a shift position satisfying the determination condition. The branch layout design support apparatus according to any one of the above items. A wire harness that has a trunk line and a branch line branched from the trunk line, and in which the branch line bent from the trunk line at a desired bending angle is attached to a mating member with a clamp, is developed on a wiring board in a planar manner. In the branch layout design support method for supporting the branch layout design of the trunk line and the branch line using the branch layout design support device according to any one of claims 1 to 4 ,
A route information acquisition step in which the route information acquisition means acquires route information indicating a branch position of the trunk line and the branch line and a fixed position for fixing the clamp;
The component information acquisition unit acquires component information indicating physical properties of the wire harness, and a component information acquisition process;
The clamp information acquisition means, the clamp information acquisition process of acquiring clamp information indicating the performance of the clamp,
The branching path indicated by the path information and the branch line indicated by the component information indicate the holding force of the clamp corresponding to each of a plurality of different shift positions shifted from the clamp fixed position by the calculation means. A calculation process for calculating based on the physical properties of the clamp and the performance of the clamp indicated by the clamp information;
The shift position specifying unit compares the calculated holding force with a predetermined determination condition corresponding to the wire harness and specifies a shift position that satisfies the determination condition.
An allowable tolerance range calculating step in which the allowable tolerance range calculating means calculates a bending angle allowable tolerance range of the branch line corresponding to the specified shift position to support the design of the branch layout;
An output process in which the output means outputs the calculated bending angle tolerance range;
A branch layout design support method characterized by comprising: A wire harness that has a trunk line and a branch line branched from the trunk line, and in which the branch line bent from the trunk line at a desired bending angle is attached to a mating member with a clamp, is developed on a wiring board in a planar manner. A branch layout design support apparatus for supporting a design of a branch layout of the trunk line and the branch line when
Route information obtaining means for obtaining route information indicating a branch route of the trunk line and the branch line and a fixed position for fixing the clamp;
Component information acquisition means for acquiring component information indicating physical properties of the wire harness;
Clamp information acquisition means for acquiring clamp information indicating the performance of the clamp;
The holding force of the clamp corresponding to each of a plurality of different shifting positions shifted from the clamp fixing position, the branch path indicated by the path information, the physical properties of the branch indicated by the component information, and the clamp The calculation means for calculating based on the performance of the clamp indicated by the information, the holding force calculated by the calculation means and a determination condition predetermined corresponding to the wire harness, and comparing the determination condition A shift position specifying means for specifying the shift position;
Allowable tolerance range calculating means for calculating a bending angle allowable tolerance range of the branch line corresponding to the shifted position specified by the shifted position specifying means;
An output means for outputting the bending angle allowable tolerance range calculated by the allowable tolerance range calculating means for supporting the design of the branch layout;
Branch layout design support program to make it function.

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