JP2012217289A - Clamp fixture structure and clamp fixture method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp fixture structure and a clamp fixture method which securely fix a clamp to a wiring harness regardless of materials of the clamp and a tape (belt like member).SOLUTION: A clamp fixture structure according to this invention fixes a body part 110, attached to a wiring harness 10 composed of one or multiple electric wires, and a clamp 100, which continues into the body part 110 and includes an attachment part 120 attached to the wiring harness 10, to the wiring harness 10 with a tape 50. The attachment part 120 has a contact surface 121 contacting with the wiring harness 10 and an outer surface 122 positioned on the rear surface side of the contact surface 121. Protruding parts 122A (hook parts), hooking the tape 50, are formed in the outer surface 122.

Description

  The present invention relates to a clamp fixing structure and a clamp fixing method for fixing a clamp to a wire harness with a predetermined tape (band member).

  Conventionally, a clamp is used when a wire harness composed of one or a plurality of electric wires is routed on an outer peripheral portion of a vehicle body such as an automobile (for example, an externally exposed portion such as a floor under the vehicle body). This clamp is provided with the main-body part with which a wire harness is mounted | worn, and the attaching part connected with a main-body part and attached to a wire harness.

  Such a clamp (attachment portion) is fixed to the wire harness with a predetermined tape (band member), and then attached to the clamp on the outer periphery of the vehicle body, whereby the wire harness is routed on the outer periphery of the vehicle body.

Japanese Patent Laid-Open No. 2002-36479 (pages 2 to 4 and FIG. 1)

  However, in the conventional technology described above, when the clamp is formed of an olefin resin or the like, or when the adhesive strength of the tape is weak, the adhesive force between the tape and the clamp (mounting portion) is weak. It was difficult to fix firmly. Therefore, there is a demand for a technique for firmly fixing the clamp to the wire harness regardless of the material of the clamp or the tape.

  Accordingly, an object of the present invention is to provide a clamp fixing structure and a clamp fixing method capable of firmly fixing a clamp to a wire harness regardless of the material of the clamp or the tape (band member).

  In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention is that a main body (main body 110) attached to a wire harness (wire harness 10) made of one or a plurality of electric wires and a main body connected to the main body are attached to the wire harness. A clamp fixing structure for fixing a clamp (clamp 100) having a mounting portion (attachment portion 120) to the wire harness by a predetermined band-like member (tape 50), wherein the attachment portion contacts the wire harness Contact surface (contact surface 121) and an outer surface (outer surface 122) positioned on the back side of the contact surface, and the outer surface has a hook portion (for example, a protrusion 122A) on which the belt-like member is hooked. ) Is formed.

  According to such a feature, a hook portion on which the belt-like member is hooked is formed on the outer surface. Thereby, compared with the case where an outer surface is flat, it becomes possible to fix a clamp to a wire harness firmly, without a strip | belt-shaped member being rubbed from a hook part. In particular, it is effective when the clamp is made of olefin resin or when the adhesive strength of the belt-like member is weak, and the clamp can be firmly fixed to the wire harness regardless of the material of the clamp or belt-like member. It becomes.

  The second feature of the present invention is related to the first feature of the present invention, and is characterized in that the hooking portion is constituted by a protrusion (protrusion 122A) protruding outward from the outer surface. To do.

  According to this feature, since the hooking portion is constituted by the protrusion, the band-shaped member is easily caught on the protrusion, and it is possible to reliably prevent the band-shaped member from being rubbed from the protrusion.

  A third feature of the present invention relates to the second feature of the present invention, and is summarized in that the protrusion is tapered from the outer surface toward the outside.

  According to such a feature, the projecting portion is tapered outwardly from the outer surface, so that the band-shaped member is more easily caught on the projecting portion and reliably prevents the strip-shaped member from being scraped from the projecting portion. it can.

  A fourth feature of the present invention relates to the first to third features of the present invention, wherein a rib (rib 121A) protruding outward from the contact surface is formed on the contact surface. The gist.

  According to such a feature, the rib is formed on the contact surface, so that the rib bites into the wire harness, so that the clamp from the wire harness can be prevented. For this reason, it becomes possible to fix a clamp firmly with a wire harness.

  A fifth feature of the present invention relates to the first to fourth features of the present invention, wherein a bent rib (bent rib 120A) that bends outward from the mounting portion is formed at the tip edge of the mounting portion. This is the gist.

  According to this feature, it is possible to prevent the tape from being rubbed with respect to the longitudinal direction of the wire harness on the attachment portion (on the outer surface) by forming the bending rib at the tip edge of the attachment portion. For this reason, it becomes possible to fix a clamp firmly with a wire harness.

  According to a sixth aspect of the present invention, there is provided a clamp having a main body portion attached to a wire harness composed of one or a plurality of electric wires, and an attachment portion connected to the main body portion and attached to the electric wires. A clamp fixing method for fixing to the wire harness by step A (clamp attachment step) in which the contact surface of the attachment portion is brought into contact with the outer periphery of the wire harness in a state where the main body portion is attached to the wire harness; Step B of fixing the attachment portion on the outer periphery of the wire harness by hooking the belt-like member on a protrusion provided on the outer surface of the attachment portion and winding the belt-like member around the wire harness and the attachment portion. A tape winding step).

  The seventh feature of the present invention relates to the sixth feature of the present invention, and further includes a step C (harness tape winding step) of winding the belt-shaped member around the outer periphery of the wire harness before the step A, The gist of the step B is to hook the belt-like member on the protrusion and fix the attachment portion to the outer periphery of the wire harness wound around the belt-like member.

  An eighth feature of the present invention relates to the sixth or seventh feature of the present invention, and is summarized in that, in the step B, the tip of the belt-like member is hooked on the protrusion.

  According to the features of the present invention, it is possible to provide a clamp fixing structure and a clamp fixing method capable of firmly fixing a clamp to a wire harness regardless of the material of the clamp or the tape (band member).

FIG. 1 is a schematic diagram showing a vehicle body 1 in which a wire harness is routed through a clamp according to the present embodiment. FIG. 2 is a perspective view showing a clamp fixing structure according to the present embodiment. FIG. 3 is an exploded perspective view showing the clamp 100 according to the present embodiment. FIG. 4 is an enlarged perspective view showing the mounting portion 120 of the clamp 100 according to the present embodiment. 5 is a cross-sectional view taken along the line AA in FIG. FIG. 6 is an enlarged perspective view showing the clamp 100 and the wire harness 10 according to the present embodiment (No. 1). FIG. 7 is an enlarged perspective view showing the clamp 100 and the wire harness 10 according to the present embodiment (No. 2). FIG. 8 is an enlarged perspective view showing the mounting portion 120 of the clamp 100A according to the first modification. FIG. 9 is an enlarged perspective view showing the mounting portion 120 of the clamp 100B according to the second modification.

  Next, embodiments of a clamp fixing structure and a clamp fixing method according to the present invention will be described with reference to the drawings. Specifically, (1) schematic configuration of the vehicle body 1, (2) description of clamp fixing structure, (3) description of clamp fixing method, (4) action / effect, (5) modification example, (6) other Embodiments will be described.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(1) Schematic configuration of vehicle body 1 First, a schematic configuration of the vehicle body 1 in which the wire harness 10 is routed through the clamp 100 according to the present embodiment will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a vehicle body 1 in which a wire harness is routed through a clamp according to the present embodiment. In the present embodiment, the vehicle body 1 is described as being a hybrid vehicle. However, the vehicle body 1 is not limited to this and may be another vehicle such as an electric vehicle.

  As shown in FIG. 1, the vehicle body 1 is driven by mixing two powers of an engine 2 and a motor unit 3. Electric power from the battery 5 (battery pack) is supplied to the motor unit 3 via the inverter unit 4.

  In the present embodiment, the engine 2, the motor unit 3, and the inverter unit 4 are mounted in an engine room 6 where front wheels and the like are located. The battery 5 is mounted on the rear part 7 of the automobile where the rear wheels and the like are located. The battery 5 may be mounted in an automobile room that exists behind the engine room 6.

  The motor unit 3 and the inverter unit 4 are connected by a known high-voltage wire harness 8. The inverter unit 4 and the battery 5 are connected by a known wire harness 10.

  The wire harness 10 is configured for high pressure, and is formed by covering one or a plurality of electric wires with a tubular body (for example, a resin corrugated tube having irregularities on the outer peripheral surface). In the wire harness 10, the intermediate portion 10 </ b> M is routed via a clamp 100 described later on the ground side under the vehicle body floor 11. The vehicle body underfloor 11 is a known body and a so-called panel member, and the vehicle body underfloor 11 is provided with a cylindrical attachment member 11A (see FIG. 2) to which the clamp 100 can be attached.

  The wire harness 10 and the battery 5 are connected via a junction block 12 provided in the battery 5. A rear end 10R of the wire harness 10 is connected to the junction block 12 by a connector. The rear end 10 </ b> R side of the wire harness 10 is routed on the floor that is the indoor side of the vehicle body 1. The front end 10F side of the wire harness 10 is also routed on the floor. The front end 10 </ b> F side of the wire harness 10 is connected to the inverter unit 4 by a connector.

  Here, if supplementary explanation is given in the present embodiment, the motor unit 3 includes a motor and a generator in its configuration. The inverter unit 4 includes an inverter and a converter in the configuration. The motor unit 3 and the inverter unit 4 are formed as a motor assembly including a shield case. The battery 5 is of Ni-MH or Li-ion type and is modularized. For example, the battery 5 may be a power storage device such as a capacitor. The battery 5 is not particularly limited as long as it can be used for the vehicle body 1 and the electric vehicle which are hybrid vehicles.

(2) Description of Clamp Fixing Structure Next, the clamp fixing structure according to the present embodiment will be described with reference to FIGS. FIG. 2 is a perspective view showing a clamp fixing structure according to the present embodiment. FIG. 3 is an exploded perspective view showing the clamp 100 according to the present embodiment. FIG. 4 is an enlarged perspective view showing the mounting portion 120 of the clamp 100 according to the present embodiment. 5 is a cross-sectional view taken along the line AA in FIG.

  As shown in FIG. 2, the clamp fixing structure is a structure in which the clamp 100 is fixed to the wire harness 10 with a tape 50 (predetermined strip-shaped member).

  The clamp 100 is used when the wire harness 10 is attached to the underbody floor 11 (attachment member 11A). The clamp 100 is formed by integral molding of synthetic resin or the like. As shown in FIGS. 3 to 5, the clamp 100 includes a main body portion 110 attached to the wire harness 10 and an attachment portion 120 attached to the wire harness 10.

  The main body 110 has an annular portion 111 that covers the wire harness 10 and a fixed portion 112 that is fixed to the vehicle body underfloor 11 (attachment member 11A).

  The annular portion 111 has an annular shape along the outer periphery of the wire harness 10. The annular portion 111 is formed by a semicircular upper member 111A and a semicircular lower member 111B into which the upper member 111A is fitted. Such an annular portion 111 (lower member 111B) is formed integrally with the fixed portion 112.

  The fixed portion 112 has a substantially box shape. The fixed portion 112 is formed with a hole portion 112A into which the protrusion 11B (see FIG. 2) of the attachment member 11A provided on the vehicle body floor 11 can be inserted. A mounting portion 120 is connected to the main body 110 (annular portion 111).

  The attachment portion 120 has a plate shape. A pair of attachment portions 120 are provided on the upper and lower sides of the annular portion 111. That is, two attachment portions 120 are provided on the upper member 111A, and two attachment portions 120 are also provided on the lower member 111B.

  A bending rib 120 </ b> A that bends outward from the mounting portion 120 is formed at the leading edge of the mounting portion 120 (the leading edge in the longitudinal direction of the wire harness). In addition, a wall surface 120B that protrudes outward from the portion is formed at a portion where the attachment portion 120 is connected to the main body portion 110.

  As shown in FIG. 4, the mounting portion 120 has a contact surface 121 that contacts the wire harness 10 and an outer surface 122 that is located on the back side of the contact surface 121.

  As shown in FIG. 5, a plurality of ribs 121 </ b> A are formed on the contact surface 121 so as to protrude outward from the contact surface 121 (on the wire harness 10 side). The rib 121A has a rectangular shape (see FIG. 3). An outer surface 122 is provided on the back side of the contact surface 121.

  As shown in FIGS. 4 and 5, a hook portion on which the tape 50 is hooked is formed on the outer surface 122. In the present embodiment, the hook portion is configured by a protrusion 122A that protrudes outward (opposite side of the wire harness 10) from the outer surface 122.

  This protrusion 122A is formed in a tapered shape from the outer surface 122 outward. Further, the protrusion 122A is arranged along the longitudinal direction of the wire harness 10 and the direction orthogonal to the longitudinal direction in a plan view of the outer surface 122.

  Note that the protrusions 122A are not necessarily arranged along the longitudinal direction of the wire harness 10 and the direction orthogonal to the longitudinal direction in the plan view of the outer surface 122, and may be arranged in a lattice shape.

  The above-described tape 50 (see FIG. 2) is wound around the mounting portion 120 (outer surface 122), so that the mounting portion 120 is fixed to the outer periphery of the wire harness 10. Note that the tape 50 is formed of a material that is cured by water (for example, injection / dropping of water or immersion in water) or light (for example, visible light or dedicated illumination). For example, the tape 50 is formed of a water curable resin composition or a photo curable resin composition. Specifically, the surface material of the tape 50 includes a water curable urethane resin. Examples of the back material of the tape 50 include glass wool, glass cloth, polyester cloth, and nonwoven fabric.

(3) Description of Clamp Fixing Method Next, a clamp fixing method for fixing the above-described clamp 100 to the wire harness 10 with the tape 50 will be described with reference to FIGS. 2, 6, and 7. 6 and 7 are enlarged perspective views showing the clamp 100 and the wire harness 10 according to this embodiment.

  As shown in FIG. 2, the clamp fixing method includes at least a clamp attaching step (step A) and a tape winding step (step B).

  First, in the clamp attachment process, the contact surface 121 of the attachment portion 120 is brought into contact with the outer periphery of the wire harness 10 in a state where the main body portion 110 is attached to the wire harness 10.

  Next, in the tape winding step, the tape 50 is hooked on the protrusion 122 </ b> A provided on the outer surface 122 of the attachment portion 120, and the tape 50 is wound around the wire harness 10 and the attachment portion 120. The mounting part 120 is fixed. In the tape winding step, as shown in FIG. 6, it is possible to temporarily fix the winding at the beginning by hooking the leading end portion of the tape 50 to the protrusion 122A.

  Here, in the clamp fixing method, a harness tape winding step (step C) may be performed before the clamp attaching step. In this harness tape winding step, as shown in FIG. 7, the tape 50 is previously wound around the outer periphery of the wire harness. Thereafter, in the clamp attachment process, the tape 60 other than the tape 50 may be hooked on the protrusion 122A, and the attachment portion 120 may be fixed to the outer periphery of the wire harness 10 around which the tape 50 is wound. The tape 60 may be made of the same material as the tape 50 or may be made of a material different from the tape 50.

  After the clamp 100 (attachment portion 120) is fixed to the outer periphery of the wire harness 10 by such a clamp fixing method, the clamp 100 is transported to an automobile manufacturer or the like, and fixed to the vehicle body underfloor 11 via the clamp 100, for example. Become.

(4) Actions / Effects In the present embodiment described above, the outer surface 122 is formed with a protrusion 122A (a hook) on which the tape 50 is hooked. Thereby, compared with the case where the outer surface 122 is flat, the tape 100 can be firmly fixed to the wire harness 10 without the tape 50 being scraped from the protrusion 122A. In particular, it is effective when the clamp 100 is formed of an olefin resin or the like, or when the adhesive force of the tape 50 is weak, and the clamp 100 is firmly fixed to the wire harness 10 regardless of the material of the clamp 100 or the tape 50. It becomes possible to do.

  In the present embodiment, the hook 50 is configured by the protrusion 122A, or the protrusion 122A is tapered outwardly from the outer surface 122, so that the tape 50 is easily caught on the protrusion 122A. Thus, it is possible to reliably prevent the tape 50 from being rubbed from the protrusion 122A.

  In the present embodiment, since the rib 121A is formed on the contact surface 121, the rib 121A bites into the wire harness 10 (tubular body), so that the clamp 100 can be prevented from being rubbed from the wire harness 10. For this reason, the clamp 100 can be firmly fixed by the wire harness 10.

  In the present embodiment, a bent rib 120A is formed at the tip edge of the mounting portion 120, and a wall surface 120B is formed at a portion where the mounting portion 120 is connected to the main body portion 110. 122), the tape 50 can be prevented from being rubbed with respect to the longitudinal direction of the wire harness 10. For this reason, the clamp 100 can be firmly fixed by the wire harness 10.

  In the present embodiment, the tape 50 is formed of a material that is cured by water or light, so that the clamp 100 is more firmly fixed to the wire harness 10 than in the case where the tape 50 is formed of a material that is not cured. be able to.

  In the present embodiment, in the tape winding step, it is possible to temporarily fix the winding 50 by hooking the leading end portion of the tape 50 to the protrusion 122A, so that a winding operation or the like can be easily performed.

  In the present embodiment, a harness tape winding step may be performed before the clamp attachment step. In this case, the clamp 100 can be attached to the wire harness 10 in a state where the wire harness 10 is previously held in an arbitrary shape by the curing action of the tape 50.

(5) Modification Example Next, a modification example of the clamp 100 according to the above-described embodiment will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part as the clamp 100 which concerns on embodiment mentioned above, and a different part is mainly demonstrated.

(5-1) Modification 1
First, the configuration of the clamp 100A according to the first modification will be described with reference to the drawings. FIG. 8 is an enlarged perspective view showing the mounting portion 120 of the clamp 100A according to the first modification.

  In the embodiment described above, the protrusion 122 </ b> A provided on the outer surface 122 of the clamp 100 is formed in a tapered shape outward from the outer surface 122. On the other hand, in the first modification, as shown in FIG. 8, the protrusion 122A is formed in a semi-spherical shape (texture shape).

  Even in the first modification, the clamp 100A can be firmly fixed to the wire harness 10 regardless of the material of the clamp 100A or the tape 50, as in the above-described embodiment.

(5-2) Modification 2
Next, the configuration of the clamp 100B according to Modification 2 will be described with reference to the drawings. FIG. 9 is an enlarged perspective view showing the mounting portion 120 of the clamp 100B according to the second modification.

  In the embodiment described above, the protrusion 122 </ b> A provided on the outer surface 122 of the clamp 100 is formed in a tapered shape outward from the outer surface 122. On the other hand, in the modified example 2, as shown in FIG. 9, the protrusion 122 </ b> A is formed in a saw-tooth shape (step shape) in the side view of the mounting portion 120. The tip of the protrusion 122A is preferably formed to be sharp (a sharp angle).

  Even in the second modification, the clamp 100B can be firmly fixed to the wire harness 10 regardless of the material of the clamp 100B or the tape 50 as in the above-described embodiment or the first modification.

(6) Other Embodiments As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it is understood that the description and drawings constituting a part of this disclosure limit the present invention. Should not. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. Specifically, although the clamp 100 has been described as being used when the wire harness 10 is routed to the vehicle body under floor 11, the clamp 100 is not limited to this, and the wire harness 10 is arranged outside the vehicle body under floor 11. It may be used when searching.

  Moreover, although the attaching part 120 demonstrated as what has comprised plate shape, it is not limited to this, For example, the attaching part 120 is formed in the curved shape according to the outer periphery shape of the wire harness 10. In addition, only the contact surface 121 may be formed in a curved shape in accordance with the outer peripheral shape of the wire harness 10, and the contact surface 121 and the outer surface 122 are in a curved shape in accordance with the outer peripheral shape of the wire harness 10. It may be formed. Thereby, the attachment part 120 becomes easy to be firmly fixed to the wire harness 10.

  Moreover, although the hook part was demonstrated as what was comprised by the protrusion 122A which protrudes outward from the outer surface 122, it is not limited to this, What the tape 50 (strip | belt-shaped member) hooks is not limited to this. What is necessary is just to be comprised by the recessed part dented from the outer surface 122, the member (for example, rubber | gum) etc. which generate | occur | produce resistance between the tapes 50, for example.

  Further, the shape of the protrusion 122A is not limited to the shape described in the above-described embodiments and modifications, and may be other shapes (for example, a trapezoidal cross section). Of course, any shape that can be caught is acceptable. Similarly, the shape of the rib 121 </ b> A may be any shape that bites into the wire harness 10.

  The rib 121A has been described as having a rectangular shape, but is not limited thereto. For example, the rib 121A is formed in a cylindrical shape or a tapered shape outward like the protrusion 122A. It may be formed in a shape (conical shape, triangular pyramid shape, quadrangular pyramid shape), or may be formed in a semi-spherical shape (texture shape) or a saw-tooth shape (step shape).

  Further, the clamp fixing method is not necessarily performed at the manufacturing site, and may be performed, for example, by an automobile manufacturer. Thereby, the wire harness 10 (tubular body) can also be shape | molded in a desired shape using the hardening property of the tape 50 according to the motor vehicle of various sizes, such as a vehicle shape and a magnitude | size.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

10 ... Wire harness 50, 60 ... Tape (band member)
DESCRIPTION OF SYMBOLS 100,100A, 100B ... Clamp 110 ... Main-body part 120 ... Mounting part 120A ... Bending rib 121 ... Contact surface 121A ... Rib 122 ... Outer surface 122A ... Projection part (hook part)

Claims (8)

A clamp that fixes a clamp having a main body portion attached to a wire harness composed of one or a plurality of electric wires and an attachment portion connected to the main body portion and attached to the wire harness to the wire harness by a predetermined band-shaped member. A fixed structure,
The mounting portion is
A contact surface in contact with the wire harness;
An outer surface located on the back side of the contact surface;
A clamp fixing structure in which a hooking portion on which the belt-like member is hooked is formed on the outer surface. The clamp fixing structure according to claim 1,
The clamp fixing structure, wherein the hook portion is constituted by a protrusion protruding outward from the outer surface. The clamp fixing structure according to claim 2,
The clamp fixing structure, wherein the protrusion is formed to be tapered outward from the outer surface. The clamp fixing structure according to any one of claims 1 to 3,
The clamp fixing structure, wherein a rib projecting outward from the contact surface is formed on the contact surface. The clamp fixing structure according to any one of claims 1 to 4,
A clamp fixing structure, wherein a bending rib that is bent outward from the mounting portion is formed at a tip edge of the mounting portion. Clamp fixing that fixes a clamp including a main body portion attached to a wire harness composed of one or more electric wires and an attachment portion connected to the main body portion and attached to the electric wire to the wire harness by a predetermined band-shaped member. A method,
In a state where the main body is mounted on the wire harness, the step A for bringing the contact surface of the attachment portion into contact with the outer periphery of the wire harness;
Step B for fixing the attachment portion to the outer periphery of the wire harness by hooking the belt-like member on a protrusion provided on the outer surface of the attachment portion and winding the belt-like member around the wire harness and the attachment portion; A clamp fixing method comprising: The clamp fixing method according to claim 6,
Before the step A, the method further includes a step C of winding the belt-shaped member around the outer periphery of the wire harness,
In said step B, the said band-shaped member is hooked on the said protrusion, The said fixing | fixed part is fixed to the outer periphery of the said wire harness wound by the said band-shaped member, The clamp fixing method characterized by the above-mentioned. The clamp fixing method according to claim 6 or 7,
In the step B, the clamp fixing method is characterized in that the tip of the belt-like member is hooked on the protrusion.

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