JP2006320181A - Auxiliary member for protective tube of electric wire bundle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary member for a protective tube for an electric wire bundle which attains improvement of workability and cost reduction, and prevents damages to electric wires. <P>SOLUTION: The auxiliary member 11 includes a wall portion 15, which is inserted into a slit 18 of the protective tube 13 for the electric wire bundle covering the electric wire bundle 12; a fixing portion 16 of the electric wire bundle, which fixes the electric wire bundle 12 inside the protective tube 13 for the electric wire bundle; moving blocking portions 17, 17 which block moving of the protective tube 13 for the electric wire bundle in a longitudinal direction; and a protective plate portion 14 which faces the opening edge of the slit 18 outside the protective tube 13 for the electric wire bundle. The fixing portion 16 of the electric wire bundle includes an adhesion surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an auxiliary member used together with a wire bundle protection tube for protecting a wire bundle.

  For example, a cylindrical wire bundle protection tube (corrugated tube or hard tube) is generally known as a device for protecting a wire bundle (wire harness) routed in a vehicle. The conventional wire bundle protection tube has one slit formed on this side surface. The slit is formed along the axial direction of the wire bundle protection tube. The wire bundle protection tube is formed so that a slit can be opened and the wire bundle can be inserted into the inside from the side.

  Such a wire bundle protection tube has a structure that is easy to move in the axial direction after the attachment to the wire bundle is completed. Therefore, the wire bundle protection tube has a structure that requires an operation of fixing both ends of the wire bundle protection tube and the wire bundle by tape winding. In addition, the wire bundle protection tube may be opened by an external force such as bending to expose the internal wire bundle. Therefore, it has a structure that requires the work of winding and fixing the middle of the wire bundle protection tube.

  By the way, the following patent document 1 discloses a technique regarding an auxiliary member used together with a wire bundle protection tube. In FIG. 4, the conventional auxiliary member 1 includes a curved strip-shaped auxiliary member body 4 provided outside the wire bundle protection tube 3 that protects the wire bundle 2, and a bite inserted into the slit 5 of the wire bundle protection tube 3. And an intrusion prevention rib 6. The biting prevention rib 6 is formed in a band plate shape. Further, the biting prevention rib 6 is formed so as to protrude in the vertical direction at the center of the auxiliary member main body 4. The following Patent Document 1 also discloses an example of a biting prevention rib 6 having a locking portion 7 for preventing dropout as shown in FIG.

  In the above configuration, when the biting prevention rib 6 is inserted into the slit 5 of the electric wire bundle protection tube 3, the electric wire constituting the electric wire bundle 2 is not in the slit 5. Therefore, there is an effect that it is possible to prevent the electric wire from being damaged by the edge of the portion forming the slit 5 or the like.

The conventional auxiliary member 1 has an effect that the exposure of the electric wire can also be prevented in addition to the effect that the electric wire constituting the electric wire bundle 2 can be prevented from being damaged. For this reason, the conventional auxiliary member 1 has a structure useful as one of the countermeasures for the above problems.
Japanese Utility Model Publication 4-86022

  Even if the conventional auxiliary member 1 is used, the above-described positional misalignment problem between the wire bundle protection tube 3 and the wire bundle 2 remains unsolved (the tape winding is necessary even if the conventional auxiliary member 1 is used). If the problem of misalignment is not solved, workability cannot be improved and costs cannot be reduced.

  In addition, the conventional auxiliary member 1 has the following problems. That is, when the locking portion 7 is formed at the end of the biting prevention rib 6, there is a problem that the electric wire may be damaged at the tip of the locking portion 7.

  This invention is made | formed in view of the situation mentioned above, and makes it a subject to provide the auxiliary member for electric wire bundle protection tubes which can aim at the improvement of workability | operativity and cost reduction. It is another object of the present invention to provide an auxiliary member for a wire bundle protection tube that can prevent the wire from being damaged.

  The auxiliary member for the wire bundle protection tube of the present invention according to claim 1, which has been made to solve the above problems, includes a wall portion inserted into a slit of the wire bundle protection tube covering the wire bundle, and the wire bundle protection tube. It has an electric wire bundle fixing part which fixes the electric wire bundle inside, and a movement prevention part which prevents movement of the electric wire bundle protection tube in the longitudinal direction.

  According to the present invention having such characteristics, the auxiliary member and the wire bundle are fixed via the wire bundle fixing portion. By this fixing, the auxiliary member does not move with respect to the wire bundle. Further, the fixing prevents the auxiliary member from falling off after the wire bundle protection tube is mounted. On the other hand, the wire bundle protection tube is prevented from moving in the longitudinal direction due to the presence of the movement preventing portion after being attached to the auxiliary member. By preventing the movement in the longitudinal direction, the wire bundle protection tube is not moved relative to the wire bundle. According to the present invention, when an external force such as bending is applied to the wire bundle protection tube, exposure of the wire bundle is prevented by the presence of the wall portion. Further, the presence of the wall portion prevents the electric wires constituting the electric wire bundle from being bitten.

  The auxiliary member for an electric wire bundle protection tube according to a second aspect of the present invention is the auxiliary member for an electric wire bundle protection tube according to the first aspect, wherein the electric wire bundle fixing portion includes an adhesive surface. It is said.

  According to the present invention having such characteristics, the auxiliary member and the electric wire bundle are fixed by bonding on the bonding surface. Examples of the formation of the adhesive surface include application of an adhesive and application of a double-sided tape. According to the present invention, the auxiliary member and the wire bundle can be easily fixed by including the adhesive surface. Since the portion in contact with the wire bundle becomes an adhesive surface, the wire is prevented from being damaged.

  The auxiliary member for an electric wire bundle protection tube of the present invention according to claim 3 is the auxiliary member for an electric wire bundle protection tube according to claim 1 or 2, wherein the opening of the slit is formed outside the electric wire bundle protection tube. It further has a protective plate portion facing the edge.

  According to the present invention having such a feature, the slit of the wire bundle protection tube is covered with the protection plate portion. Even if an external force such as bending is applied to the electric wire bundle protection tube and the gap between the slits is somewhat widened, the slit is covered with the protective plate portion. By covering the slit with the protective plate portion, the electric wire bundle protective tube maintains its function as the protective tube. According to the present invention, the presence of the protection plate portion prevents the auxiliary member from falling into the wire bundle protection tube. Further, inadvertent bending of the wire bundle protection tube is restricted. Furthermore, the rigidity of the auxiliary member itself is improved.

  The auxiliary member for an electric wire bundle protection tube according to a fourth aspect of the present invention is the auxiliary member for an electric wire bundle protection tube according to any one of the first to third aspects, wherein the wall portion is substantially I-shaped in cross-section. The wire block protection tube is formed in a substantially V shape, an inverted V shape, or a substantially H shape, and the movement preventing portion is in contact with the end surface of the wire bundle protection tube, or the outer surface or inner surface of the wire bundle protection tube is pulled. It is characterized by being formed in a hanging shape.

  According to the present invention having such a feature, a wall portion having a substantially I shape, a substantially V shape or an inverted V shape, or a substantially H shape in cross section is inserted into the slit of the wire bundle protection tube. The shape of the wall can be selected according to the degree of opening of the slit. The variation in the shape of the wall is, for example, more effective in terms of manufacturing and material costs than making the wall thick in a dark cloud, making it approximately V-shaped or approximately H-shaped. Because it is the target. According to the present invention, when the wire bundle protection tube is a corrugated tube or a hard tube, the movement blocking portion is formed in a shape in which the tube end surface comes into contact. In the case of a corrugated tube, the movement blocking portion is formed in a shape that the tube outer surface or inner surface is hooked.

  According to the first aspect of the present invention, it is possible to prevent misalignment without tape winding the wire bundle protection tube or the wire bundle. Moreover, the exposure of the wire bundle can be prevented without tape winding the wire bundle inside the wire bundle protection tube. According to the present invention, it is possible to reduce the working time and cost related to tape winding, which has been conventionally required. Therefore, according to the present invention, it is possible to improve workability and reduce costs.

  According to the second aspect of the present invention, since the adhesive surface is included, the auxiliary member and the wire bundle can be easily fixed. Moreover, since the part which contacts an electric wire bundle becomes an adhesive surface, the part which damages an electric wire can be eliminated.

  According to the third aspect of the present invention, the slit can be covered with the protective plate portion. Therefore, the electric wire bundle protection tube can maintain the function as the protection tube. Further, according to the present invention, it is possible to prevent the auxiliary member from dropping. Furthermore, according to the present invention, inadvertent bending of the wire bundle protection tube can be restricted, and the rigidity of the auxiliary member itself can be increased.

  According to the present invention described in claim 4, it is possible to provide an auxiliary member having a better form. Moreover, according to this invention, it can apply to various electric wire bundle protection tubes like a corrugated tube and a hard tube.

  Hereinafter, description will be given with reference to the drawings. FIG. 1 is a view showing an embodiment of an auxiliary member of the present invention, where (a) is a perspective view, (b) is a plan view, (c) is a side view, (d) is a front view, and (e) is a view. AA line sectional drawing, (f) is sectional drawing of the state which attached the electric wire bundle protection tube.

  In FIG. 1, reference numeral 11 denotes an auxiliary member of the present invention. The auxiliary member 11 is made of a synthetic resin and is used together with a wire bundle protection tube 13 that protects the wire bundle 12. Such an auxiliary member 11 includes a protection plate portion 14, a wall portion 15, an electric wire bundle fixing portion 16, and movement prevention portions 17 and 17. Each part of the auxiliary member 11 is formed so that the workability can be improved as compared with the conventional wire bundle protecting work and the cost can be reduced. Hereinafter, each part of the auxiliary member 11 will be described.

  The protection plate portion 14 is formed as a strip-like portion that is outside the wire bundle protection tube 13 and faces the opening edge of the slit 18 of the wire bundle protection tube 13. The protective plate portion 14 is formed so as to cover the slit 18 and the periphery thereof. The protection plate portion 14 is formed so as to be curved according to the curvature of the wire bundle protection tube 13. The protection plate part 14 is formed according to the length (full length) of the wire bundle protection tube 13. The protective plate portion 14 is formed with a width dimension that can cover the slit 18 even if an external force such as bending is applied to the wire bundle protective tube 13 and the interval between the slits 18 is somewhat widened. Here, the reference numeral 19 is defined as the outer surface of the protective plate portion 14, and 20 is defined as the inner surface.

  The wall portion 15 is formed as a portion to be inserted into the slit 18 of the wire bundle protection tube 13. The wall 15 is formed in a strip shape. The upper end of the wall portion 15 is coupled to the inner surface 20 of the protective plate portion 14. The wall portion 15 is coupled so as to be orthogonal to the inner surface 20 of the protection plate portion 14. The wall portion 15 is formed in a substantially I shape in a sectional view. The wall 15 is formed with a height dimension corresponding to at least the thickness of the wire bundle protection tube 13.

  The wire bundle fixing portion 16 is formed as a portion for fixing the wire bundle 12 inside the wire bundle protection tube 13. The wire bundle fixing part 16 has a strip-like base part 22 whose inner surface 21 is coupled to the lower end of the wall part 15, and an adhesive part 23 provided on the outer surface of the base part 22. Since the wire bundle fixing portion 16 has the bonding portion 23, the wire bundle fixing portion 16 includes a bonding surface for bonding and fixing the wire bundle 12. The base 22 is formed so as to be curved in accordance with the curvature of the wire bundle 12, for example. The base 22 is formed in accordance with the length (full length) of the wire bundle protection tube 13. The base 22 is formed with a width and size necessary and sufficient for bonding and fixing the wire bundle 12. As the bonding part 23, an adhesive or a double-sided tape is used.

  The movement blocking portions 17 and 17 are formed as portions that block the movement of the wire bundle protection tube 13 in the longitudinal direction (full length direction). One movement blocking portion 17 has an inner surface 24 coupled to each front end of the protection plate portion 14, the wall portion 15, and the wire bundle fixing portion 16. Similarly, in the other movement blocking portion 17, the inner surface 24 is coupled to the rear ends of the protection plate portion 14, the wall portion 15, and the wire bundle fixing portion 16. The movement blocking portions 17 and 17 are formed in a wall shape. The tube end surfaces (not shown) of the wire bundle protection tube 13 are in contact with the inner surfaces 24 of the movement blocking portions 17 and 17.

  Next, the assembly work of the auxiliary member 11 and the wire bundle protection tube 13 to the wire bundle 12 will be described with reference to FIG. 2A and 2B are explanatory views of the assembling work, wherein FIG. 2A is a cross-sectional view of the state before the auxiliary member is fixed to the electric wire bundle, FIG. 2B is a cross-sectional view of the state where the auxiliary member is fixed to the electric wire bundle, and FIG. FIG. 3 is a cross-sectional view of a state in which a wire bundle protection tube is attached.

  2A and 2B, in the first operation step, an operation of fixing the auxiliary member 11 to the electric wire bundle 12 through the electric wire bundle fixing portion 16 is performed. By this fixing, the auxiliary member 11 does not move with respect to the wire bundle 12.

  In the work second step, as shown in FIG. 2C, work for attaching the wire bundle protection tube 13 to the auxiliary member 11 and the wire bundle 12 is performed. At this time, the wire bundle protection tube 13 is handled so as to insert the wire bundle 12 into the interior so as to widen the interval between the slits 18.

  After inserting the wire bundle 12, the wire bundle protection tube 13 is inserted between the inner surface 20 of the protection plate portion 14 and the inner surface 21 of the wire bundle fixing portion 16 at a portion where the slit 18 is formed. The wire bundle protection tube 13 is in a state where the wall portion 15 is inserted into the slit 18.

  When the wire bundle protection tube 13 is attached, the wire bundle protection tube 13 is prevented from moving in the longitudinal direction due to the presence of the movement blocking portions 17 and 17. When the movement in the longitudinal direction is prevented, the wire bundle protection tube 13 does not move more than necessary with respect to the wire bundle 12.

  When an external force such as bending is applied to the wire bundle protection tube 13, the presence of the wall portion 15 and the protection plate portion 14 prevents the wire bundle 12 from being exposed.

  As described above with reference to FIGS. 1 and 2, the auxiliary member 11 of the present invention can be used to position the wire bundle protection tube 13 and the wire bundle 12 without tape winding as in the prior art. Misalignment can be prevented. Moreover, exposure of the wire bundle 12 can be prevented by using the auxiliary member 11 of the present invention.

  According to the auxiliary member 11 of the present invention, there is an effect that workability can be improved and cost can be reduced as compared with the conventional case.

  Next, another shape example of the auxiliary member will be described with reference to FIG. 3A to 3D are cross-sectional views showing other shape examples of the auxiliary member. In addition, the same code | symbol is attached | subjected to the fundamentally same part as the above-mentioned, and description shall be abbreviate | omitted.

  3A, the auxiliary member 11a includes protective plate portions 14a and 14a, a wall portion 15a, an electric wire bundle fixing portion 16, and a movement blocking portion (not shown; for example, refer to reference numeral 17 in FIG. 1). Have. The wall portion 15a is formed in a substantially V shape in sectional view. Protective plate portions 14a and 14a are coupled to one end on the opening side of the wall portion 15a as shown in the figure. On the other hand, the wire bundle fixing portion 16 is coupled to the other end of the wall portion 15a.

  3B, the auxiliary member 11b includes a protective plate portion 14, a wall portion 15b, wire bundle fixing portions 16b and 16b, and a movement blocking portion (not shown; for example, refer to reference numeral 17 in FIG. 1). Have. The wall portion 15b is formed in a substantially inverted V shape in sectional view. Electric wire bundle fixing portions 16b and 16b are coupled to one end on the opening side of the wall portion 15b as shown in the figure. On the other hand, the protective plate portion 14 is coupled to the other end of the wall portion 15b.

  In FIG. 3C, the auxiliary member 11c includes protective plate portions 14a and 14a, a wall portion 15c, wire bundle fixing portions 16b and 16b, and a movement blocking portion (not shown; see, for example, reference numeral 17 in FIG. 1). And have. The wall portion 15c is formed in a substantially H shape in sectional view. Protective plate portions 14a and 14a are coupled to one end of the wall portion 15c, which is the upper opening, as illustrated. On the other hand, electric wire bundle fixing parts 16b and 16b are coupled to the other end which is the lower side opening of the wall part 15c.

  In FIG.3 (d), the auxiliary member 11d has the wall part 15, the electric wire bundle fixing | fixed part 16, and the movement prevention part (illustration omitted). The auxiliary member 11d has a shape in which the protective plate portion 14 is omitted from that of FIG. Moreover, it has the shape which changed the movement prevention part which is not illustrated with respect to the thing of FIG. The movement blocking portion (not shown) is formed to be a convex portion that is hooked on the inner surface of the wire bundle protection tube 13 (here, a corrugated tube). Specifically, a convex movement blocking portion is formed on the inner surface 21 of the wire bundle fixing portion 16.

  In addition, it goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

  For example, the wall portion 15 in FIG. 1 is formed in a band plate shape, but is not limited to this. The wall 15 may be formed in a plurality of strips and arranged in a line at a desired interval.

  Moreover, although the movement prevention parts 17 and 17 of FIG. 1 are formed in wall shape, it shall not be this limitation. The wire bundle protection tube 13 (here, a corrugated tube) may be a convex portion that hooks on the inner surface or the outer surface.

It is a figure which shows one Embodiment of the auxiliary member of this invention, (a) is a perspective view, (b) is a top view, (c) is a side view, (d) Front view, (e) is AA. Line sectional drawing, (f) is sectional drawing of the state which attached the electric wire bundle protection tube. It is explanatory drawing of an assembly | attachment operation | work, (a) is sectional drawing of the state before fixing an auxiliary member to an electric wire bundle, (b) is sectional drawing of the state which fixed the auxiliary member to the electric wire bundle, (c) is electric wire bundle It is sectional drawing of the state which attached the protection tube. (A)-(d) is sectional drawing which shows the other example of a shape of an auxiliary member. It is a figure of the auxiliary member of a prior art example, (a) is a perspective view, (b) is sectional drawing of the state which attached the electric wire bundle protection tube. It is a figure of the auxiliary member of a prior art example, (a) is a perspective view, (b) is sectional drawing of the state which attached the electric wire bundle protection tube.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Auxiliary member 12 Electric wire bundle 13 Electric wire bundle protection tube 14 Protection plate part 15 Wall part 16 Electric wire bundle fixing part 17 Movement prevention part 18 Slit 19 Outer surface 20, 21, 24 Inner surface 22 Base 23 Adhesive part

Claims (4)

A wall portion inserted into a slit of the wire bundle protection tube that covers the wire bundle, a wire bundle fixing portion that fixes the wire bundle inside the wire bundle protection tube, and prevents movement of the wire bundle protection tube in the longitudinal direction An auxiliary member for an electric wire bundle protection tube, comprising: a movement blocking portion. In the auxiliary member for an electric wire bundle protection tube according to claim 1,
An auxiliary member for an electric wire bundle protection tube, wherein the electric wire bundle fixing portion is configured including an adhesive surface. In the auxiliary member for the electric wire bundle protection tube according to claim 1 or 2,
An auxiliary member for a wire bundle protection tube, further comprising a protection plate portion facing the opening edge of the slit outside the wire bundle protection tube. In the auxiliary member for an electric wire bundle protection tube according to any one of claims 1 to 3,
The wall portion is formed in any one of a substantially I shape, a substantially V shape or an inverted V shape, or a substantially H shape in cross section, and the movement preventing portion is in contact with the end face of the wire bundle protection tube or An auxiliary member for a wire bundle protection tube, wherein the wire bundle protection tube is formed in a shape that the outer surface or the inner surface of the wire bundle protection tube is hooked.

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