JP2006214797A - Bending testing machine for wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bending testing machine for wire harness, capable of corresponding to the bending testing places of the wire harness moved in a complicated fashion and present in large numbers, superior in the point of accuracy and capable of being manufactured at a low cost. <P>SOLUTION: The bending testing machine of the wire harness for performing bending tests of the wire harness is equipped with a fixed body 18 and a movable body 19, both of which have the wire harness 1 attached thereto and a connector 41 for connecting the fixed body and the movable body. The connector is manufactured by photo-fabrication method. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bending test apparatus for a wire harness that is employed in a portion that is repeatedly bent, such as an automobile door.

  For example, wire harnesses that bundle multiple wires are used to connect to various electrical devices and batteries mounted on automobiles. For example, doors that are opened and closed, and movement adjustment in the front-rear direction In a wire harness wired over a free slide sheet or the like, there is a portion where the wire harness itself is bent every time the door is opened and closed or the slide sheet is moved and adjusted. And since there is a high possibility that disconnection will occur particularly in the part where such a wire harness is repeatedly bent, it is required to perform a bending test for the purpose of estimating the life of the wire harness in such a part, that is, durability. Yes. As a general wire harness bending test apparatus for this bending test, there is an apparatus as shown in FIGS. 4 and 5 (Patent Document 1).

  This wire harness bending test apparatus includes a fixed frame 3 that is installed and fixed, and a movable frame 6 that is supported by the fixed frame 3 via a connecting member 4 so as to be rotatable around a support shaft 5. I have. In addition, the wire harness bending test apparatus includes a fixing side holding panel 18 having a grommet hole 18 a for holding the wire harness 1 in the bolt insertion hole 11 of the fixing frame 3 along the mounting bolt 21 in the vertical direction. A plurality of removable side holding panels 19 having grommet holes 19a for holding the wire harness 1 are detachably attached along the vertical direction using a mounting bolt 21 on the movable frame body 6 while being fixedly detachably attached. The movable frame 6 is reciprocated around the support shaft 5 with the wire harness 1 held between the corresponding grommet 70 of each fixed side holding panel 18 and the grommet 70 of each movable side holding panel 19. A rotation operation mechanism 7 is provided for moving operation.

JP 2001-272320 A

  In the method described in Patent Document 1, a plurality of bolt insertion holes 11 of the fixed frame body 3 and the movable frame body 6 are provided so that a bending test can be performed on a plurality of samples. Since the movement of the bent portion is complicated, the bending test apparatus described in Patent Document 1 cannot be handled without preparing various types of bending test apparatuses.

  Further, in the method described in Patent Document 1, adjustment of the mounting position when attaching the holding panel (18, 19) to the fixed frame body 3 and the movable frame body 6 is necessary from design data such as three-dimensional CAD. Since the harness mounting position, coordinates, angle, etc. are determined and used with a ruler, the accuracy is insufficient, and the time and labor for assembling the bending test apparatus are enormous, leading to an increase in cost.

  Accordingly, an object of the present invention is to provide a completely new wire harness bending test apparatus in which the above-described problems do not occur.

  In order to solve the above-mentioned problem, the bending test apparatus for a wire harness according to claim 1 includes a fixed body and a movable body to which the wire harness is attached, and a connecting body that connects the fixed body and the movable body. The connection body is manufactured by optical molding.

  Moreover, the bending test apparatus for the wire harness according to claim 2 reads the attachment position of the wire harness to the vehicle from the three-dimensional design data of the wire harness in the invention of claim 1, and based on the read data, The connection body is manufactured by optical molding.

  Further, in the wire harness bending test apparatus according to claim 3 and the invention according to claim 1 or 2, the connecting body is provided with a rotating shaft portion.

  In the wire harness bending test apparatus according to the present invention, since the connecting body for connecting the fixed body and the movable body of the wire harness bending test apparatus is manufactured by optical molding, the wire harness is mounted on a vehicle or the like. Can be faithfully reproduced, and the assembly work of the wire harness bending test apparatus can be greatly improved.

  Embodiments of the present invention will be described with reference to the drawings. First, the structure of the wire harness bending test apparatus according to this embodiment will be described. In addition, about the part same as a prior art, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

  FIG. 1 shows an embodiment of a bending test apparatus for a wire harness according to the present invention, and is a schematic perspective view of the whole bending test apparatus for a wire harness. FIG. 2 is a connection provided in the bending test apparatus for a wire harness. 4 is a perspective view of a body 41. FIG.

  As shown in FIGS. 1 and 2, the connecting body 41 includes a fixed side portion 31 to which a fixed side holding panel (fixed body) 18 is attached, a movable side portion 61 to which a movable side holding panel (movable body) 19 is attached, The rotary shaft 51 is inserted through the support shaft 5. In this embodiment, it is assumed that the fixed side is the body of the automobile and the movable side is the door of the automobile.

  As shown in FIG. 2, the fixed side portion 31 includes a fixed side holding panel mounting portion 32 and a fixed side rotating shaft portion 33 that is a part of the rotating shaft portion 51. The fixed-side holding panel mounting portion 32 includes a mounting plate portion 35 that is connected to the fixed-side rotating shaft portion 33 by a connecting portion 34, and bolts through which the fixed-side holding panel 18 shown in FIG. A hole 35a is formed. The fixed holding panel 18 is also provided with a bolt insertion hole similar to this, and the mounting bolt 21 is inserted into both bolt insertion holes and fixed with nuts. In the present embodiment, the mounting plate portion 35 is provided with four bolt insertion holes 35a. In addition, the fixing structure and fixing method of the attachment plate part 35 and the fixed side holding panel 18 are not limited to this, and may be fixed with an adhesive or the like.

  Further, the fixed-side rotation shaft portion 33 is provided with a support shaft insertion hole 33a, and is held rotatably with respect to the support shaft 5 shown in FIG. That is, even if the support shaft 5 is rotated, the support shaft 5 is idled in the support shaft insertion hole 33a so that the rotational force is not transmitted to the fixed-side rotation shaft portion 33. It doesn't move.

  As shown in FIG. 2, the movable side portion 61 includes a movable side holding panel mounting portion 62 and a movable side rotating shaft portion 63 that is a part of the rotating shaft portion 51. The movable side holding panel mounting portion 62 includes a mounting plate portion 65 that is connected to the movable side rotating shaft portion 33 by a connecting portion 64, and a bolt insertion through which the movable side holding panel 19 shown in FIG. A hole 35a is formed. The movable side holding panel 19 is also provided with the same bolt insertion holes, and the mounting bolts 21 are inserted into both bolt insertion holes and fixed with nuts. In the present embodiment, four bolt insertion holes 35 a are provided in the mounting plate portion 65. In addition, the fixing structure and fixing method of the attachment plate part 35 and the movable side holding panel 19 are not limited to this, and may be fixed with an adhesive or the like.

  Further, the movable side rotation shaft portion 63 is provided with a support shaft insertion hole 63a, which is fixed to the support shaft 5 shown in FIG. That is, the entire movable side portion 61 rotates with respect to the fixed portion side 31 as the support shaft 5 rotates.

  Reference numeral 7 denotes a rotation operation mechanism provided with a drive motor and the like. The power of the drive motor is transmitted to a pulley to which the support shaft 5 is connected via a V-belt, and the support shaft 5 is rotated. Reference numeral 8 denotes a clamp holding panel mounting portion used for positioning a clamp holding panel (not shown) for fixing a clamp C (see FIG. 3) for mounting the wire harness 1 to the door of the automobile.

  Next, a method for manufacturing the wire harness bending test apparatus will be described. FIG. 3 is an excerpt of a three-dimensional CAD design drawing of the wire harness 1 of the automobile. The manufacturing method of the wire harness bending test apparatus first calculates the three-dimensional coordinates and mounting angles of the vehicle body B on the fixed side and the vehicle door D on the movable side from the three-dimensional CAD design drawing data, and the rotation axis. Set Y. In addition, the code | symbol C is a clamp for attaching the wire harness 1 to the door of a motor vehicle. Next, the connecting body 41 is designed with the set rotating shaft as the center line of the support shaft 5, and the entire designed connecting body 41 is integrally formed by optical molding. The photo-molding means that the liquid surface of the photo-curing resin that is cured when irradiated with light is irradiated with light that cures the photo-curing resin such as laser light, and the irradiated region is cured to a predetermined thickness, and the cured part Is a method for forming a target three-dimensional model by repeatedly irradiating the light and then curing the next layer and laminating it on the lower layer. A resin molded product can be easily manufactured by simply inputting original CAD data. Next, the coupling body 41 is cut into the fixed side portion 31 and the movable side portion 61. Next, the support shaft 5 is inserted into the support shaft insertion hole 63a of the movable rotation shaft portion 63 of the movable side portion 61, and the support shaft 5 is fixed to the support shaft insertion hole 63a with an adhesive or the like. The fixed side portion 31 inserts the support shaft 5 into the support shaft insertion hole 33 a of the fixed side rotation shaft portion 33. As a result, the fixed side portion 31 can rotate with respect to the support shaft 5, and the movable side portion 61 rotates with the rotation of the support shaft 5. Next, the fixed side holding panel 18 is attached to the fixed side holding panel mounting portion 32 of the fixed side portion 31, the movable side holding panel 19 is attached to the movable side holding panel mounting portion 62 of the movable side portion 61, and the clamp holding panel mounting portion. A clamp holding panel (not shown) is attached to 8 and the support shaft 5 is connected to the rotation operating mechanism 7 to complete the wire harness bending test apparatus.

  As described above, in the wire harness bending test apparatus according to the present invention, the connection body 41 that connects the fixed side part 31 (fixed body) and the movable side part 61 (movable body) of the wire harness bending test apparatus is manufactured by optical molding. Therefore, the state in which the wire harness 1 is mounted on a vehicle or the like can be faithfully reproduced, and the assembly work of the wire harness bending test apparatus can be greatly improved.

  Further, when the clamp holding panel mounting portion 8 is also manufactured by optical molding in addition to the fixed side portion 31, the movable side portion 61, and the connecting body 41, the state in which the wire harness 1 is mounted on a vehicle or the like is reproduced. Since the positioning can be performed at the three positions of the fixed side portion 31, the movable side portion 61, and the clamp holding panel mounting portion 8, the accuracy can be improved.

  Next, a wire harness bending test method using the wire harness bending test apparatus will be described.

  The fixed body holding panel of the wire harness bending test apparatus is attached to the body B of the automobile shown in FIG. 1, the movable side holding panel 19 is attached to the door D of the automobile, and the clamp holding panel (not shown) is attached to the clamp C of the wire harness 1. Assuming that it is an attachment location of an automobile door, the wire harness 1 and the grommet 70 that are actually mounted on the vehicle body are attached and fixed as shown in FIG. This state is the same as the environment in which the wire harness 1 over the vehicle body B and the vehicle door D in the vehicle is mounted on the actual vehicle. In this state, the bending operation of the wire harness 1 is performed by operating the rotation operation mechanism 7.

  Note that the wire harness 1 and the grommet 70 are attached to the bending test apparatus in advance by attaching the wire harness 1 and the grommet 70 to the fixed side holding panel 18 and the movable side holding panel 19. The parts other than the fixed side holding panel 18 and the movable side holding panel 19 may be assembled, and the fixed side holding panel 18 and the movable side holding panel 19 may be attached later.

  As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that the application range of this invention is not restricted to the above-mentioned embodiment.

1 shows an embodiment of a wire harness bending test apparatus according to the present invention, and is a schematic perspective view of the whole wire harness bending test apparatus. FIG. It is a perspective view of the connection body 41 with which the bending test apparatus of a wire harness is equipped. It is an excerpt of a three-dimensional CAD design drawing of an automobile wire harness. It is a perspective view which shows the bending test apparatus of the conventional wire harness. 4 is an explanatory diagram showing a bending test apparatus of the wire harness.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wire harness 3 Fixed frame body 4 Connecting member 5 Support shaft 6 Movable frame body 7 Rotating operation mechanism 8 Clamp holding panel attachment part 11 Bolt insertion hole 18 Fixed side holding panel (fixed body)
18a Grommet hole 19 Movable side holding panel (movable body)
19a Grommet hole 21 Mounting bolt 31 Fixed side portion 32 Fixed side holding panel mounting portion 33 Fixed side rotation shaft portion 33a, 63a Support shaft insertion hole 34, 64 Connection portion 35, 65 Mounting plate portion 35a Bolt insertion hole 41 Connection body 51 Rotation Shaft part 61 Movable side part 62 Movable side holding panel mounting part 63 Movable side rotating shaft part 70 Grommet B Car body D Car door C Clamp Y Rotating shaft

Claims (3)

A wire harness bending test apparatus for performing a wire harness bending test,
Bending of a wire harness, comprising: a fixed body and a movable body to which the wire harness is attached; and a coupling body that couples the stationary body and the movable body, wherein the coupling body is manufactured by optical molding. Test equipment.   2. The wire harness according to claim 1, wherein an attachment position of the wire harness to a vehicle is read from three-dimensional design data of the wire harness, and the connection body is manufactured by optical molding based on the read data. Bending test equipment.   The wire harness bending test apparatus according to claim 1, wherein the connecting body is provided with a rotating shaft portion.

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