JP2017085749A - Harness fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harness fixture capable of improving the reliability of fixing a wire harness to a vehicle.SOLUTION: A frame-like portion 42 of a main body part 2 has a convex portion 421D and an outer wall portion 421C as a buffer portion, so that, even when an external shock is applied, a fixed part 3 can be held by an inner wall portion 421A. Therefore, it is possible to maintain assembly of the main body part 2 holding a wire harness W and the fixed part 3 fixed to an underfloor surface C1 of a vehicle C. The reliability of fixing the wire harness W to the vehicle C can be thus improved.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a harness fixture for fixing a wire harness to a lower surface of a vehicle floor.

  Conventionally, a resin clamp (harness fixing tool) that fixes a wire harness to a vehicle by holding the wire harness while being fixed to a stud bolt (fixed portion) provided in the vehicle has been proposed (for example, , See Patent Document 1). In the clamp described in Patent Document 1, a stud clamp (fixed component) fixed to a stud bolt is assembled to a frame-shaped clamp seat (frame-shaped portion), and a stud is mounted on a clamp base (main body component) that holds a wire harness. By attaching the clamp and the clamp seat, the wire harness is fixed to the bottom surface of the vehicle (that is, the surface facing the road surface).

JP 2013-169121 A

  By the way, when the vehicle is traveling, foreign objects such as stones on the road may jump and collide with the floor surface. As in the invention described in Patent Document 1, when the wire harness is fixed to the lower surface of the floor of the vehicle with a resin clamp, the clamp may be damaged due to collision of foreign matter. In particular, if the clamp seat is damaged, the stud base cannot be held by the clamp base, and the wire harness may not be fixed to the vehicle.

  The objective of this invention is providing the harness fixing tool which can improve the reliability of fixation to the vehicle of a wire harness.

  In order to solve the problems and achieve the object, the invention described in claim 1 is a resin harness fixing tool for fixing a wire harness to a lower surface of a floor of a vehicle, and holds the wire harness. A main body part having a harness holding part; and a fixing part having a fixing part fixed to a fixed part protruding from the floor lower surface and being assembled to the main body part, the main body part having the floor lower surface And a frame-like portion that extends along the perpendicular direction and surrounds and holds the fixed component, and the frame-like portion is formed with a buffer portion that absorbs an impact from the outside. It is a harness fixture.

  According to a second aspect of the present invention, in the first aspect of the present invention, a convex portion is formed on the outer surface of the frame-shaped portion, and the convex portion functions as the buffer portion. Is.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the frame-shaped portion is provided with an inner wall portion that abuts on the fixed part, and spaced from the inner wall portion. And an outer wall portion, and the outer wall portion functions as the buffer portion.

  According to the first aspect of the present invention, since the buffer portion is formed in the frame-shaped portion of the main body part, the shock when a foreign object collides with the frame-shaped portion is absorbed, and the frame-shaped portion is damaged. Can be suppressed. Therefore, the assembly of the main body part for holding the wire harness and the fixed part fixed to the fixed part of the vehicle can be maintained, and the reliability of fixing the wire harness to the vehicle can be improved. In addition, the frame-shaped part may be formed integrally with the main body part, or may be formed separately.

  According to the invention described in claim 2, the convex portion formed in the frame-shaped portion is deformed when a foreign object collides, thereby absorbing the impact and suppressing the breakage of the frame-shaped portion. . Further, the impact may be absorbed by breaking the convex portion, and at this time, holding of the fixed component by the frame-like portion can be maintained.

  According to the invention described in claim 3, the outer wall portion of the frame-like portion is bent and deformed toward the inner wall portion side when a foreign object collides, thereby absorbing the impact and suppressing the breakage of the frame-like portion. can do. Further, the impact may be absorbed by breaking the outer wall portion, and at this time, the holding of the fixed component by the inner wall portion can be maintained.

It is a side view which shows typically a mode that a wire harness was fixed to the floor undersurface of vehicles with a harness fixture concerning an embodiment of the present invention. It is a perspective view which shows the said harness fixing tool. It is a top view which shows the part fixed to a vehicle among the said harness fixing tools. It is a top view which expands and shows the principal part of the said harness fixing tool.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view schematically showing a state in which the wire harness W is fixed to the floor lower surface C1 of the vehicle C by the harness fixture 1 according to the embodiment of the present invention, and FIG. FIG. 3 is a plan view showing a portion of the harness fixture 1 that is fixed to the vehicle C. FIG. 4 is an enlarged plan view showing a main part of the harness fixture 1. .

  As shown in FIG. 1, the harness fixture 1 of the present embodiment includes, for example, a motor M, a power supply unit B, and a floor C1 of a vehicle C (for example, an electric vehicle or a hybrid vehicle) provided with a motor M and a power supply unit B. This is for fixing the wire harness W that connects the two. The floor lower surface C1 is, for example, the lower surface of the chassis of the vehicle C, and faces the road surface. A stud bolt S as a fixed portion projects from the road surface. In the present embodiment, the direction in which the wire harness W extends on the floor lower surface C1 (the vehicle front-rear direction) is the X direction, the direction perpendicular to the floor lower surface C1 (vertical direction) is the Z direction, and the X direction and the Z direction are the same. The intersecting direction (vehicle width direction) is defined as the Y direction.

  As shown in FIG. 2, the harness fixture 1 includes a main body part 2 that holds the wire harness W and a fixing part 3 that is assembled to the main body part 2, and each part is formed of, for example, PP (polypropylene) resin. ing.

  The main body part 2 includes a base part 4 on which the wire harness W is placed and the fixed part 3 is assembled, and a lid part 5 attached to the base part 4. The base portion 4 is arranged along the floor lower surface C1 and is integrally formed and fixed so as to be aligned with the harness holding concave portion 41 in the Y direction with respect to the harness holding concave portion 41 opened to the floor lower surface C1 side in the Z direction. A frame-like portion 42 that holds the component 3.

  The harness holding recess 41 corresponds to the size and shape of the corrugated tube W1 that is an exterior material of the wire harness W, and is formed so as to surround the corrugated tube W1 from three sides. Moreover, in the harness holding recessed part 41, the latching protrusion which latches the recessed part of the corrugated tube W1 may be formed, and it may be comprised so that the movement to the X direction of the wire harness W may be controlled.

  The frame-shaped portion 42 opens to the floor lower surface C1 side in the Z direction, and also faces a pair of main sandwiching wall portions 421 that sandwich the fixed component 3 while facing the X direction as shown in FIG. And a pair of sub clamping wall portions 422 that sandwich the fixed component 3. The fixed component 3 is formed in a rectangular parallelepiped shape as will be described later. Moreover, the main clamping wall part 421 extends along the YZ plane, and the sub clamping wall part 422 extends along the ZX plane. Hereinafter, the region where the fixed component 3 is disposed as viewed from the frame-like portion 42 is referred to as the inner side in the X direction and the Y direction, and the opposite side is referred to as the outer side.

  As shown in FIG. 4, the pair of main clamping wall portions 421 are arranged so as to be aligned on the outer side in the X direction with an inner wall portion 421A in contact with one surface of the fixed component 3 and an interval 421B with respect to the inner wall portion 421A. And an outer wall portion 421C provided. Further, a plurality of convex portions 421D are formed on the outer side surface of the outer wall portion 421C, and a projecting deformation restricting portion 421E is formed on the inner side surface. The plurality of convex portions 421D extend in the Z direction along the outer wall portion 421C, and are provided with an interval D therebetween. The interval D is set to be less than 5 mm, for example. When the distance D is set in this way, when a stone having a particle size (5 to 13 mm) of No. 6 crushed stone defined in “JISA5001: crushed stone for road” tries to collide with the outer wall portion 421. The stone does not enter between the convex portions 421D and collides with at least one convex portion 421D.

  Each of the pair of sub clamping wall portions 422 includes a wall main body 422A that is separated from the fixed component 3 in the Y direction, and two contact walls 422B that protrude inward in the Y direction from the wall main body 422A and contact the fixed component 3. Have. The two abutting walls 422B are arranged so as to avoid a position where a fixing hole 31 described later is formed in the fixing component 3.

  The cover part 5 is assembled | attached to the base part 4 so that the harness holding | maintenance recessed part 41 may be plugged up from the floor lower surface C1 side. By assembling the lid portion 5 to the base portion 4, a cylindrical harness holding portion 40 is formed, and the wire harness W is held.

  The fixing component 3 is formed in a rectangular parallelepiped shape, and a fixing hole 31 is formed as a fixing portion to which the stud bolt S is fixed. The fixing hole 31 is formed so as to extend in the Z direction in a state where the fixing component 3 is held by the frame-shaped portion 42. The stud 3 may be fixed to the stud bolt S by screwing the stud bolt S into the fixing hole 31, or a nut that is simply inserted through the fixing hole 31 and screwed into the stud bolt S. The fixing component 3 may be fixed to the stud bolt S by using.

  The fixed component 3 has a dimension in the X direction that is about the same as the interval between the pair of main clamping wall portions 421. In addition, the Y dimension in the fixed part 3 is enlarged around the fixing hole 31, but in other parts, the Y direction dimension is about the same as the interval between the contact walls 422 </ b> B in the pair of auxiliary holding wall portions 422. Have Therefore, the fixed component 3 is fitted and held in the frame-like portion 42. Moreover, the fixed component 3 shall be engage | inserted by the frame-shaped part 42 from the road surface side.

  In the harness fixture 1 as described above, the lid part 5 is assembled to the base part 4 to hold the wire harness W, and the fixing part 3 is a stud bolt in a state where the fixing part 3 is held to the frame-like part 42. By being fixed to S, the wire harness W is configured to be fixed to the floor lower surface C1.

  Here, when the vehicle C travels, the stone ST as a foreign matter on the road surface jumps and tries to collide with the harness fixture 1 provided on the floor lower surface C1, and each part of the main clamping wall 421 The function will be described. As described above, the stone ST does not enter between the convex portions 421D and collides with the convex portions 421D. When the stone ST collides, the convex portion 421D is bent and deformed in the X direction, and the impact is absorbed.

  Further, since the outer wall portion 421C is provided at a distance 421B with respect to the inner wall portion 421A, the outer wall portion 421C is bent and deformed so as to be convex toward the inner wall portion 421A side when the stone ST collides. The shock is absorbed. At this time, since the deformation restricting portion 421E protruding inward in the X direction is formed on the outer wall portion 421C, the deformation restricting portion 421E comes into contact with the inner wall portion 421A and excessive deformation of the outer wall portion 421C is suppressed.

  In the above description, the impact is absorbed by the deformation of the convex portion 421D and the outer wall portion 421C. However, the impact may be absorbed by being broken. Even when the convex portion 421D and the outer wall portion 421C are broken, the frame-like portion 42 can hold the fixed component 3 by the inner wall portion 421A. As described above, the convex portion 421D and the outer wall portion 421C that absorb the impact from the outside caused by the collision of the stone ST function as a buffer portion.

  According to this embodiment, there are the following effects. That is, since the frame-shaped part 42 of the main body part 2 has the convex part 421D and the outer wall part 421C as a buffer part, even when an impact is applied from the outside, the fixed part 3 can be held by the inner wall part 421A. . Therefore, the assembly of the main body part 2 holding the wire harness W and the fixing part 3 fixed to the floor lower surface C1 of the vehicle C can be maintained, and the reliability of fixing the wire harness W to the vehicle C can be maintained. Can be improved.

  In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.

  For example, in the above-described embodiment, the frame-like portion 42 has the convex portion 421D and the outer wall portion 421C as the buffer portion, but the frame-like portion may have only one of the convex portion and the outer wall portion. Good. That is, the frame-shaped part is formed by a single wall and a convex part is formed, or the frame-shaped part is formed by a double wall (inner wall part and outer wall part) and the convex part is not formed. There may be. Further, the frame-like portion may be formed by triple or more walls. Moreover, the buffer part should just be a thing which can absorb the impact from the outside, and may have another shape.

  In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

DESCRIPTION OF SYMBOLS 1 Harness fixing tool 2 Main body part 3 Fixing part 31 Fixing hole (fixing part)
40 Harness holding part 42 Frame-like part 421A Inner wall part 421B Interval 421C Outer wall part (buffer part)
421D Convex part (buffer part)
C Vehicle C1 Under floor W Wire harness S Stud bolt (fixed part)

Claims (3)

A resin harness fixing tool for fixing the wire harness to the lower surface of the vehicle floor,
A body part having a harness holding part for holding the wire harness;
A fixing part that is fixed to a fixed part protruding from the floor lower surface and is assembled to the main body part, and
The main body part has a frame-like portion that extends along the direction perpendicular to the floor lower surface and surrounds and holds the fixed part,
A harness fixture, wherein the frame-like portion is formed with a buffer portion that absorbs an impact from the outside. A convex portion is formed on the outer surface of the frame-shaped portion,
The harness fixture according to claim 1, wherein the convex portion functions as the buffer portion. The frame-shaped part has an inner wall part that comes into contact with the fixed part, and an outer wall part provided at an interval from the inner wall part,
The harness fixture according to claim 1, wherein the outer wall portion functions as the buffer portion.

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