JPH0662717U - Corrugated tube for wire harness - Google Patents

Abstract

(57) [Summary] [Purpose] U-shaped grooved ridge annulus 1 that opens into the tube
Along with the axial direction of the outer circumference 10 at arbitrary intervals,
In a corrugated tube for a wire harness having a slit opening 2 in which the outer circumference 10 is cut out, it is possible to reduce the tube diameter so as to reduce the size and prevent abnormal noise due to a wire dance, and at the same time reduce the number of parts and wire The storage workability of is improved. [Structure] Inside the one side edge 3 of the slit opening 2, a locking piece 5 having a locking claw 6 at the tip is provided, and a plurality of locking holes are provided in the circumferential direction of the outer periphery 10 on the other side edge 4 side. 7 is provided, and further, inside the ridge ring portion 1 on the one side edge 3 side, a part of the ridge ring portion 1 on the other side edge 4 side is formed so that it can be stored. The structure is characterized in that the locking pieces 5 are locked in any of the stop holes 7 to enable locking sets of reduced diameter corrugated tubes having different tube diameters.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a corrugated tube for a wire harness used to house and protect a wire group of a wire harness and dispose the wire group on a vehicle body or the like.

[0002]

[Prior art]

 The conventional corrugated tube for wire harness is shown in Fig. 3. In order to fulfill the function of wire harness distribution flexibility and protection of stored wires, the cross section is concentric with the outer periphery 10 and the opening is inside the tube. The U-shaped ridge ring part 1 forms a tube body continuously arranged at a required pitch, and the wire group is put in from the slit port 2 cut in the axial direction and stored, and the tape is wound to join the slit port 2. A common method of accommodating various wire volume (volume of wire group) within a certain range in the same size corrugated tube from the viewpoint of reducing the number of parts and low cost. Is taken.

[0003]

[Problems to be solved by the device]

 In the conventional wire harness corrugated tube as described above, when the amount of stored electric wire for the tube diameter is small, an extra space is created in the tube, which hinders downsizing of the wire harness, and when the extra space exists, the vehicle travels. There is a problem that the electric wire wanders due to vibration and the like and causes abnormal noise. Further, since it is necessary to wind the outer circumference tape to set the slit mouth 2 by joining when the electric wire is stored, it is troublesome to store and set the electric wire. The present invention solves the above-mentioned drawbacks of the prior art and provides a corrugated tube that meets the size reduction of the wire harness system that is strictly required in the field.

[0004]

[Means for Solving the Problems]

 The corrugated tube for a wire harness of the present invention which solves the above technical problem is described as follows: "A tube body in which a ridge ring portion having a U-shaped cross section that opens into the tube is connected to the outer periphery at a required pitch in the axial direction, In a corrugated tube for wire harness that accommodates an electric wire group from a slit opening cut in a direction, a locking piece is provided on one edge side of the slit opening, and the locking piece is attached to the outer circumference of the tube on the other edge side of the slit opening. A locking portion for locking the ridge is provided, and further, the ridge ring portion of the young portion on the other side edge side has a shape that can be stored inside the ridge ring portion on the one side edge side. It is characterized in that the ring portion can be locked by reducing the diameter by partially overlapping the ring portion and engaging the locking piece with the locking portion.

As a mode / change of the above configuration, a plurality of locking portions on the other side edge side are provided in the circumferential direction of the tube body, and one of the locking portions is locked on the one side edge side. By locking one piece, it may be possible to lock and set the reduced diameter tube body of an arbitrary diameter. Further, in order to stabilize the engagement posture between the locking piece and the locking part, the locking piece protruding toward the inside of the tube body and having the locking claw at the tip, and the locking claw are engaged with each other. It is preferable to form the engaging holes that match.

[0006]

[Action]

 The corrugated tube for wire harness with the above configuration has a shape in which a part of the ridge ring part on the other side edge is overlapped and stored inside the ridge ring part on the one side edge side of the slit mouth. After storing the inside of the tube, the ridge ring part at the slit mouth is overlapped and the locking piece and the locking part are engaged with each other, or the outer circumference is tape-wrapped. It can be set to a reduced diameter corrugated tube that is aligned with the above and does not have an extra space inside (it has a small amount even if it exists). Further, the plurality of locking portions of the above-described embodiment can be locked and locked to the one whose tube diameter changes into a plurality by selectively using the locking portion.

[0007]

【Example】

 Hereinafter, a detailed description will be given based on examples. First, referring to FIG. 1 showing a first embodiment of the present invention, ridge ring portions 1 having a U-shaped cross section that are opened in a tube are continuously provided at a predetermined pitch in the axial direction and are cut in the axial direction. In a corrugated tube for a wire harness having a slit mouth 2, each ridge annulus 1 has one side edge 3 side of the slit mouth 2 being the maximum ridge ridge end 1A and the other side of the slit mouth 2 It has a tapered U-shaped groove on the edge 4 side that becomes the smallest size ridge ring end 1B, and when this tube body is rolled up, some of the ridge ring 1 on the other side edge 4 side is shown in FIG. As shown in (B), the ridge on the one side edge 3 side is housed in an overlapping manner inside the ring portion 1, and the outer circumference 10 of the tube body is partially polymerized so that the diameter can be reduced. In this embodiment, the end portion 1A of the ridge ring portion is mounted on the outer periphery 10 on the side of the other side 4 and slides, and the outer periphery 10 is substantially half-circumscribed so that the maximum diameter reduction is possible.

Inside the one side edge 3, a locking claw 6 vertically extending in the tube and a locking piece 5 facing the inner wall of the tube on the other side edge 4 side are provided in the axial direction of the tube body. The outer periphery 10 on the side of the other side edge 4 is provided with four locking holes 7 in the circumferential direction, and the farthest 7A extends half around the outer periphery 10. The locking hole 7 is located at the position and serves as a locking portion for engaging and locking the locking claw 6 of the locking piece 5. Then, the locking claw 6 is engaged with the locking hole 7 by pushing the locking piece 5 into one of the locking holes 7, and the outer circumference 10 and the ridge ring portion 1 are slightly overlapped with each other so that the tube diameter is different. Four kinds of reduced diameter corrugated tubes can be locked and set. Then, after the electric wire group 8 is housed from the slit port 2, the electric wire group 8 is matched with the electric wire amount, and the diameter of the electric wire group 8 is reduced and locked to an arbitrary size for use.

The above-mentioned embodiment has the above-mentioned effect, and even if the amount of electric wires is small, the tube diameter can be matched with the amount of electric wires, so that the excess space in the tube is prevented from being wasted. The shape becomes smaller. The locking piece 5 for locking and locking the reduced diameter posture and the locking portion have the above-mentioned structure, and as shown in FIG. 1C, the locking piece 5 is simply inserted into the locking hole 7. Since the restoring force of the outer circumference 10 in the direction of the arrow acts in the direction of strengthening the engagement between the locking claw 6 and the locking hole 7, they are not easily disengaged but are accurately locked, and this reduced diameter posture is maintained. The outer peripheral tape winding for fixing is unnecessary, and the work of storing and setting the wire group 8 is simplified.

Further, in the embodiment of FIG. 1, as shown in FIG. 1D, when the corrugated tube is resin-molded by the flow molding, the protrusions 9 to be the locking pieces 5 are molded in advance, and then, Since the corrugated tube having the slit port 2 and the locking piece 5 can be formed by partially removing the portion S shown in the drawing, the moldability does not deteriorate as compared with the conventional corrugated tube.

Next, another embodiment of the present invention will be described with reference to FIG. That is, in this embodiment, a single ridge ring portion 1 is formed by connecting a large ridge ring portion 1C and a small ridge ring portion 1D which are half the circumference, and the large ridge ring portion 1C The small ridge ring portion 1D is superposed and housed inside, and the tube diameter can be set to be reduced by rolling and stacking the tube bodies. The locking piece 5 and the locking portion in the above-mentioned configuration of the present invention are not limited to those in the above-mentioned embodiment, and may be changed to other ones.

On the other hand, FIG. 4 shows another method of using the locking piece 5 of FIG. 1 embodiment. That is, in the case of FIG. 4, the locking piece 5 shown in FIG. 1A is tilted in the direction of the one side edge 3 so that the locking claw 6 contacts the outer periphery 10 of the locking hole 7. The outer periphery 10 is rounded, and the locking claw 6 is engaged with the locking hole 7 to lock and set. According to the method shown in FIG. 4, the locking claw 6 of the locking piece 5 which is elastically tilted backward fits into the locking hole 7, so that the restoring reaction force generated in the locking piece 5 in both locking postures. P ₁ and the reaction force P ₂ of the outer periphery 10 on the lower side, which is pressed and tries to open outward, act in mutually opposite directions to strengthen the engagement between the locking claw 6 and the locking hole 7. Since they work, both can be locked properly without being easily disengaged.

[0013]

[Effect of device]

 As described above, since the corrugated tube for a wire harness of the present invention can be reduced in diameter and set according to the amount of electric wires to be stored, there will be no excess space in the tube after the electric wires are stored, or Since the number of corrugated tubes in practical use is reduced, the size of the corrugated tube in practical use can be reduced to meet the demand for downsizing of the wire harness system, and the absence of excess space can prevent abnormal noise from being generated by the wire dance. Furthermore, since the range of electric wires that can be stored in a single-size corrugated tube is larger than that of the conventional structure, the number of partial points for each size of the corrugated tube will be reduced to reduce costs and improve manageability of parts. At the same time, in the case where the diameter reduction can be set by the locking piece / engaging portion, the tape winding after the electric wire is stored is unnecessary, and the workability of storing the electric wire is improved. There are various effects described above.

[Brief description of drawings]

FIG. 1 shows a corrugated tube for a wire harness according to a first embodiment of the present invention, in which (A) is a perspective view thereof, (B) is an EE cross-sectional view of (A), and (C) is. ) Is a cross-sectional view of the usage state, (D) in the figure is an explanatory view of the molding method

2A and 2B show a corrugated tube for a wire harness according to another embodiment of the present invention, in which FIG. 2A is a cross sectional view thereof, and FIG.

FIG. 3 shows a conventional corrugated tube for a wire harness, in which (A) is a cross-sectional view thereof and (B) is a GG cross-sectional view of (A).

FIG. 4 is a cross-sectional view of a corrugated tube showing another method of using the embodiment of FIG.

[Explanation of symbols]

 1 Ridge annulus 1A ・ 1B Ridge annulus end 2 Slit mouth 3 One side edge of slit mouth 4 Other edge of slit mouth 5 Locking piece 6 Locking claw 7 Locking hole 8 Wire bundle 10 Outer circumference

Claims (3)

[Scope of utility model registration request] 1. A tube body in which a ridge ring portion having a U-shaped cross section that opens into a tube is continuously provided on the outer periphery at a required pitch in the axial direction, and a wire group is stored from a slit opening cut in the axial direction. In the corrugated tube for wire harness,
A locking piece is provided on one side edge side of the slit opening, and a locking portion for locking the locking piece is provided on the outer circumference of the tube on the other side edge side of the slit opening, and the ridge on the one side edge side is further provided. Inside the ring part, a part of the ridge ring part on the other edge side has a shape that can be stored, and is contracted by the partial overlap of the ridge ring part and the engagement of the locking piece and the locking part. Corrugated tube for wire harness featuring a structure that enables diameter locking. 2. The corrugated tube for a wire harness according to claim 1, wherein a plurality of locking portions are provided in a circumferential direction of the tube body. 3. A locking piece provided on the inner side of the tube body, the locking piece having a locking claw facing the inner wall of the tube on the other side edge side, and locking the outer circumference of the tube body that meshes with the locking claw. The corrugated tube for a wire harness according to claim 1 or 2, wherein the hole serves as a locking portion.