JP5347328B2 - Dimensional tolerance checker for wire harness - Google Patents

Description

  The present invention relates to a technique for confirming whether a wire harness is within a predetermined dimensional tolerance when manufacturing a wire harness.

  A wire harness in an automobile or the like is separately bundled in a predetermined wiring form on a drawing board or the like and then incorporated into the automobile or the like.

  Assembly of the wire harness on the drawing board is performed by arranging a plurality of electric wires in a predetermined wiring form while guiding them with a jig and binding them at appropriate places. Under the present circumstances, the dimensional accuracy of a wire harness can be made favorable by performing a binding operation | work etc., hold | maintaining the connector of the branch line edge part of a wire harness with a connector holder.

  By the way, in the case of a wire harness with strict dimensional accuracy, it is necessary to confirm whether or not the dimensions of the branch lines are within a predetermined tolerance.

  As a method of measuring the dimension of the branch line, there is a technique in which after removing the connector from the connector holder, the branch line is pulled and the dimension of the branch line is measured with a measure or the like.

  Further, as disclosed in Patent Document 1, as a measuring tool for measuring the dimensions of branch lines, a guide member fixed on a wiring board and a slide that slidably engages with the guide member and supports a wire harness Some include a member, a thumbscrew for fixing the slide member to the guide member, and a scale. In this measuring tool, when assembling the wire harness, the slide member is fixed with a thumbscrew, and after the completion of the wire harness assembly, the thumbscrew is loosened and the slide member is moved in the direction of pulling the branch line. The dimensions will be measured.

JP 2005-321255 A

  However, in the former method, it is necessary to remove the connector from the connector holder and measure the dimension of the branch line, and the dimension measuring operation is troublesome.

  In the latter method, it is necessary to tighten and loosen the thumbscrew, and the dimension measuring operation is troublesome.

  Then, an object of this invention is to enable it to check easily whether the branch line of a wire harness is within a dimensional tolerance.

In order to solve the above-mentioned problem, the dimensional tolerance confirmation tool for the wire harness according to the first aspect is the dimensional tolerance of the branch line drawn along the predetermined pull-out direction from the main line of the wire harness on the wire harness wiring base. A wire harness dimensional tolerance checking tool for confirming a supporting member fixed on the wiring harness wiring base and a connector at an end of the branch wire in a fixed position with respect to itself. The connector holding portion is supported by the support member so as to be movable along the predetermined pull-out direction while the connector is held at a fixed position with respect to itself, and the connector holding portion is connected to the main line from the main line. A biasing member that biases the branch wire in a direction opposite to the direction in which the branch line is drawn is provided.

  A 2nd aspect is a dimension tolerance confirmation tool of the wire harness which concerns on a 1st aspect, Comprising: The said connector holding part with respect to the said supporting member with the movement of the said connector holding part in the said connector holding part or the said supporting member The scale part which shows this positional relationship is provided.

  According to the dimension tolerance checking tool of the wire harness according to the first aspect, the connector with respect to the connector holding portion is biased by the biasing member in a direction opposite to the direction in which the branch line is drawn from the main line. Can be easily held. Then, after finishing the bundling operation or the like on the branch line, the branch line is pulled out against the biasing force of the biasing member while keeping the connector held by the connector holding part. If moved in the direction, the drawn branch line is pulled. And in this state, it can be easily confirmed whether it is within a dimensional tolerance with respect to the pulled branch line.

  According to the 2nd aspect, with the movement of the said connector holding part, the positional relationship of the said connector holding part with respect to the said supporting member is shown through a scale part. For this reason, it can be confirmed more easily whether the branch line is within the dimensional tolerance.

  Hereinafter, the dimension tolerance confirmation tool of the wire harness which concerns on embodiment is demonstrated.

  1 is a side view showing a dimensional tolerance checking tool 20, FIG. 2 is a front view showing the dimensional tolerance checking tool 20, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. FIG. 5 is a diagram showing a state in which the connector holding portion 40 is moved backward, and FIG. 5 is a plan view of the dimensional tolerance checking tool 20 and shows a state in which the connector holding portion 40 is moved backward. FIG. 6 is an explanatory view showing the assembly work of the branch line WHa using the dimensional tolerance checking tool 20, and FIG. 7 is an explanation showing the dimensional tolerance checking work of the branch line WHa using the dimensional tolerance checking tool 20. FIG.

  The wire harness dimensional tolerance checking tool 20 is used when the wire harness WH is manufactured on the wire harness wiring base 10.

  That is, the wire harness wiring base 10 is configured as a wiring diagram board spreading in a plane or a frame spreading in two dimensions or three dimensions. On the wire harness wiring base 10, various holders for holding the wire harness WH or the electric wire group constituting the wire harness WH are erected. And the operation | work which binds several electric wires in the state which wired the various electric wires which comprise the wire harness WH in the predetermined wiring form, hold | maintaining in the predetermined position with the said various holders, the terminal of an electric wire edge part is a connector Wire harness WH is manufactured by performing the operation | work etc. which connect to.

  When manufacturing the said wire harness WH, as shown in FIG. 8, the branch line WHa is formed by drawing along the branch form from the main line WHb of the wire harness WH in the predetermined | prescribed extraction | drawer direction P. As shown in FIG. A connector C is attached to the end of the branch line WHa. The connector C is a general electrical connection component that is connected to various electrical devices in an automobile or the like. When assembling the branch line WHa portion, the dimensional tolerance checking tool 20 holds the connector C attached to the end of the branch line WHa in a fixed position. The drawing direction and direction of the branch line WHa are the direction and direction in which the branch line WHa is drawn from the main line WHb of the wire harness WH when the wire harness WH is manufactured by the wire harness wiring base 10. Also, the main line WHb and the branch line WHa are relative to each other as a predetermined reference line part (usually a part including a large number of electric wires) and a part branched from that part (usually a part including a smaller number of electric wires than the former part). Is grasped.

  Here, the case where the connector C has the following configuration will be described as an example. That is, the connector C is formed in a substantially rectangular parallelepiped outer shape with resin or the like. A terminal connected to the end of the electric wire constituting the branch line WHa is inserted and attached to the base end which is one end of the connector C. Moreover, the front-end | tip part which is the other end part of the connector C is formed in the connection end part which can be connected with various electric equipment. Usually, there are a plurality of electric wires inserted and connected to the connector C, but at least one electric wire may be used.

  However, the connector C is not limited to the above configuration, and various connector configurations such as a substantially cylindrical shape can be applied.

  The dimensional tolerance checking tool 20 includes a support member 30, a connector holding portion 40, and a coil spring 50 as an urging member.

  The support member 30 is a member fixed on the wire harness wiring base 10.

  Here, the support member 30 is formed into a substantially rectangular parallelepiped member with resin or the like. And it is being fixed to the predetermined position on the wire harness wiring base 10 by being fixed to the upper end part of the support bar 31 standingly arranged by the said wire harness wiring base 10. FIG.

  The connector holding part 40 is configured to be able to hold the connector C in a state in which the branch line WHa extending from the connector C can be extended to the outside.

  Here, the connector holding portion 40 is made of resin or the like and has a holding recess 42. The holding recess 42 is formed in a concave shape corresponding to the outer shape of the connector C while opening upward. And it is comprised so that the connector C may be hold | maintained in a fixed position by inserting the connector C from upper opening of the holding | maintenance recessed part 42. FIG.

  Further, a branch line extending opening 44 is formed corresponding to a portion where the branch line WHa extends in the state where the connector C is held in the connector holding part 40. The branch line extension opening 44 is a slit-like opening communicating with the upper opening of the holding recess 42, and the width dimension thereof is larger than the diameter of the branch line WHa.

  Then, the branch line WHa extends the branch line extension opening 44 by inserting the connector C into the holding recess 42 while guiding the branch line WHa extending from the connector C into the branch line extension opening 44. The connector C is configured to be held at a fixed position in the holding recess 42 while being extended to the outside.

  Note that the configuration for holding the connector C is not limited to the above example. For example, the structure which hold | maintains the connector C by mainly contact | abutting to the base end part and front-end | tip part of the connector C may be sufficient. Moreover, when the convex shape or concave shape is formed in the external part of the connector C, the structure which hold | maintains the connector C may be sufficient by utilizing the fitting shape to those convex shape or concave shape. . In short, what is necessary is just the structure which can hold | maintain the connector C in the state which extended the branch line WHa extended from the connector C outside.

  Further, the connector holding portion 40 is supported by the support member 30 so as to be movable along the direction in which the branch line WHa is drawn from the main line WHb (see arrow P).

  More specifically, a guide groove 32 is formed on the upper surface of the support member 30 so as to extend along the direction in which the branch line WHa is drawn (see arrow P). Further, a guide protrusion 46 is formed at the bottom of the connector holding portion 40, which extends along the drawing direction of the branch line WHa (see arrow P) and can be slidably fitted into the guide groove 32.

  Further, a contact piece 48 is formed in a hanging shape at the bottom portion of the connector holding portion 40 and on the side where the branch line WHa is drawn from the main line WHb. The support member 30 is formed with at least one (here, two) guide holes 34 penetratingly along the direction in which the branch line WHa is drawn (see arrow P). The guide hole 34 is formed so that the small diameter portion 34a, the medium diameter portion 34b, and the large diameter portion 34c are connected via a step portion in the direction opposite to the direction in which the branch line WHa is drawn. A rod-shaped guide pin 36 is inserted into the guide hole 34. The guide pin 36 has a pin main body portion 36a and a pin head portion 36b provided at one end of the pin main body portion 36a. The pin main body portion 36 a has a smaller diameter than the small diameter portion 34 a and is formed to have substantially the same length as the length of the guide hole 34. The pin head portion 36b has a smaller diameter than the large diameter portion 34c and a larger diameter than the medium diameter portion 34b. The guide pin 36 is inserted into the guide hole 34 in a posture in which the pin head portion 36b is directed in the direction opposite to the drawing direction of the branch line WHa, and the distal end portion of the guide pin 36 penetrates the guide hole 34. The contact piece 48 is connected and fixed.

  The connector holding portion 40 is movably supported with respect to the support member 30 by a configuration in which the guide protrusion 46 slides in the guide groove 32 and the guide pin 36 slides in the guide hole 34. . At this time, between the position at which the contact piece 48 contacts the support member 30 and the position at which the pin head portion 36b contacts the step portion between the large diameter portion 34c and the medium diameter portion 34b, The movement range of the connector holding part 40 is regulated.

  But the structure which supports the connector holding part 40 movably with respect to the support member 30 is not restricted to the said example. For example, a configuration in which a ridge portion is formed on both side portions of the connector holding portion 40 and a concave ridge portion in which the ridge portion can be slidably fitted to the support member 30 may be formed. It is possible to adopt a configuration that can be supported movably.

  Further, the coil spring 50 is configured to be able to bias the connector holding portion 40 in a direction opposite to a direction in which the branch line WHa is drawn from the main line WHb (that is, in a direction approaching the main line WHb). More specifically, the coil spring 50 is formed to have a larger diameter than the small diameter portion 34a and a smaller diameter than the medium diameter portion 34b, and a step portion between the small diameter portion 34a and the medium diameter portion 34b; The pin body 36a is externally fitted so as to be compressed between the pin head 36b. In the normal state, the connector holding portion 40 is urged against the support member 30 in the direction opposite to the direction in which the branch line WHa is pulled out by the elastic force in the extension direction of the coil spring 50 (FIGS. 1 to 3). FIG. 6). In this state, when a force opposite to the direction in which the branch line WHa is pulled out is applied to the connector holding part 40, the connector holding part 40 against the support member 30 against the elastic force of the coil spring 50. In the pulling-out direction (see arrow A) (see FIGS. 4, 5 and 7). And when the force with respect to the connector holding part 40 is cancelled | released, the connector holding part 40 returns and moves in the direction opposite to the drawing-out direction of the branch line WHa by the elastic force of the coil spring 50.

  In addition, the structure as a biasing member which biases the connector holding | maintenance part 40 is not restricted to the said example. For example, a coil spring may be incorporated in the guide protrusion 46 and the guide groove 32 portion. Moreover, the structure urged | biased using a torsion coil spring, a leaf | plate spring, rubber | gum, etc. other than a general coil spring may be sufficient.

  The dimensional tolerance checking tool 20 includes a scale portion 60. The scale portion 60 is configured to show the positional relationship of the connector holding portion 40 with respect to the support member 30 as the connector holding portion 40 moves.

  Here, a mounting recess 38 is formed on the upper surface of the support member 30 along the drawing direction of the branch line WHa (see arrow P), and the scale portion 60 is mounted in the mounting recess 38. The scale portion 60 is a long plate-like member, and a scale 61 is attached to one main surface thereof. When the connector holding part 40 is moved backward, the scale 61 is exposed so as to be observable from the outside, and the position of the connector holding part 40 with respect to the support member 30 is confirmed by reading the position of the connector holding part 40 with respect to the scale 61. It can be done.

  Note that the scale 61 may be any mark that can confirm the positional relationship of the connector holding portion 40 with respect to the support member 30. For example, a range corresponding to the dimensional tolerance of the branch line WHa may be color-coded. . Further, the scale portion 60 does not need to be configured as a separate member from the support member 30, and may be a mark that is directly printed or stamped on the support member 30. Moreover, the scale part 60 may be provided in the side surface etc. of the supporting member 30 or the connector holding part 40 (refer FIG. 7).

  A method of using the dimensional tolerance checking tool 20 will be described.

  First, as shown in FIG. 6, a substantially U-shaped harness holder 70 that holds a branch portion of the wire harness WH is erected on the wire harness wiring base 10, and the harness holder 70 has a predetermined length. It is assumed that the dimensional tolerance checking tool 20 is erected at a position separated by a distance.

  Note that the distance between the harness holder 70 and the dimension tolerance checking tool 20 (that is, the distance L (see FIG. 8) between the main line WHb and the dimension tolerance checking tool 20 in the extending direction of the branch line WHa). The minimum dimension of the allowable branch line WHa is set.

  In manufacturing the wire harness WH, the electric wires are appropriately wired along the harness holder 70 and the dimensional tolerance checking tool 20. At this time, the branch line WHa extending from the harness holder 70 is wired so as to be drawn out from the main line WHb toward the dimension tolerance checking tool 20. Further, the connector C connected to the end of the branch line WHa is held by the connector holding portion 40. At this time, the plurality of electric wires constituting the branch line WHa may be connected to the connector C in advance, or may be connected to the connector C when the connector C is held by the dimensional tolerance checking tool 20. Good.

  During this work, when the length of the electric wire constituting the branch line WHa is less than the minimum dimension of the allowable branch line WHa, due to the restriction of the distance L between the main line WHb and the dimension tolerance confirmation tool 20, The holding work of the connector C or the work of connecting the electric wire to the connector C cannot be performed. Therefore, it is possible to eliminate the outside of the tolerance range due to the shortage of the wire length.

  Through the above operation, the branch line WHa is bridged between the harness holder 70 and the dimension tolerance checking tool 20. Usually, considering the bundling workability, a certain amount of slack is given to the branch line WHa between the harness holder 70 and the dimension tolerance checking tool 20. In this state, a bundling operation such as winding a tape around the branch line WHa is performed.

  Thereafter, as shown in FIG. 7, the connector holding portion 40 is moved backward with respect to the support member 30 in the drawing direction of the branch line WHa from the main line WHb. Then, the branch line WHa is pulled between the harness holder 70 and the dimensional tolerance checking tool 20. For this reason, it is possible to easily confirm whether or not the branch line WHa is within a predetermined dimensional tolerance by checking the scale portion 60. That is, the dimension of the branch line WHa is a value obtained by adding the moving distance of the connector holding portion 40 relative to the support member 30 to the distance between the harness holder 70 and the dimension tolerance checking tool 20. Since the distance between the harness holder 70 and the dimensional tolerance checking tool 20 is a constant value determined according to the arrangement position thereof, the branch line can be checked by checking the movement distance of the connector holding portion 40 with respect to the support member 30. It can be confirmed whether WHa is within a predetermined dimensional tolerance.

  According to the dimension tolerance checking tool 20 configured as described above, the coil spring 50 urges the connector holding portion 40 in a direction opposite to the direction in which the branch line WHa is pulled out, and the branch line WHa has a certain amount of slack. In this state, it is possible to easily perform the operation of holding the connector C with respect to the connector holding unit 40, the operation of binding the electric wires, and the like. Then, after finishing the binding work or the like for the branch line WHa, the connector holding part 40 is held against the biasing force of the coil spring 50 while the connector C is held by the connector holding part 40. When the wire is pulled in the direction in which the wire is drawn, the drawn branch line WHa is pulled. For this reason, it is possible to easily confirm whether or not the tension is in the dimensional tolerance with respect to the pulled branch line WHa without removing the connector C from the connector holding portion 40. After the inspection is confirmed, the connector holding portion 40 returns to the original position by the urging force of the coil spring 50.

  In particular, as shown in FIG. 8, when paying attention to a certain electric wire W, a predetermined branch line WHa (lower side in FIG. 8) passes from the other branch line WHa (branch line on the upper side in FIG. 8) through the main line WHb. It is routed to reach the branch line. Then, a failure due to a factor such as insufficient dimension of the electric wire or excessive excess length is likely to occur on the side of a predetermined branch line WHa (the branch line on the lower side in FIG. 1) on the side to be routed later. Therefore, it can be said that it is effective to apply the dimensional tolerance checking tool 20 to the portion disposed at the end of the wire to be wired later during the manufacture of the wire harness W.

  Further, as the connector holding portion 40 moves, the positional relationship of the connector holding portion 40 with respect to the support member 30 is shown through the scale portion 60. For this reason, it can be confirmed more easily whether the branch line WHa is within the dimensional tolerance.

  In addition, the said scale part 60 is not necessarily required. The scale portion 60 may be omitted, and it may be confirmed whether or not the branch line WHa is within a dimensional tolerance by applying another measure or the like to the pulled branch line WHa.

It is a side view which shows the dimensional tolerance confirmation tool which concerns on embodiment. It is a front view which shows a dimensional tolerance confirmation tool same as the above. It is the III-III sectional view taken on the line of FIG. It is a figure which shows the state which the connector holding part moved backward in FIG. It is a top view of a dimensional tolerance confirmation tool, and is a figure showing the state where a connector holding part moved backward. It is explanatory drawing which shows the assembly operation | work of the branch line using a dimension tolerance confirmation tool. It is explanatory drawing which shows the dimensional tolerance confirmation work of the branch line using a dimensional tolerance confirmation tool. It is explanatory drawing which shows the example of a manufacture procedure of the branch line part of a wire harness.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wire harness wiring base 20 Dimensional tolerance confirmation tool 30 Support member 32 Guide groove 34 Guide hole 36 Guide pin 40 Connector holding part 42 Holding recessed part 44 Branch line extension opening part 46 Guide protrusion 50 Coil spring 60 Scale part C Connector WH Wire Harness WHa Branch line WHb Main line

Claims (2)

On the wire harness wiring base, a dimensional tolerance confirmation tool for the wire harness for confirming the dimensional tolerance of the branch line drawn along the predetermined drawing direction from the main line of the wire harness,
A support member fixed on the wire harness wiring base;
The connector at the end of the branch line is configured to be held at a fixed position with respect to the self, and the connector is held at a fixed position with respect to the self along the predetermined pull-out direction. A connector holding part supported movably,
A biasing member that biases the connector holding portion in a direction opposite to a direction in which the branch line is drawn from the main line;
Dimensional tolerance checking tool for wire harness equipped with It is a dimensional tolerance confirmation tool of the wire harness according to claim 1,
A dimension tolerance checking tool for a wire harness, wherein the connector holding part or the support member is provided with a scale part indicating a positional relationship of the connector holding part with respect to the support member as the connector holding part moves.

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