CN213243421U - Wire harness tube - Google Patents

Abstract

The utility model relates to a wire harness tube, the peripheral wall of which is provided with a cutting part for forming a notch, the cutting part extends along the length direction of the wire harness tube, and the peripheral wall of the wire harness tube forms a first wall plate and a second wall plate respectively at two sides of the cutting part along the circumferential direction; the contraction radius of the inner wall surface of the first wall plate is smaller than that of the inner wall surface of the second wall plate, and the inner wall surface of the first wall plate can cover and abut against the outer wall surface of the second wall plate. The utility model provides a pencil pipe can form the incision in order to conveniently fill the pencil, and the pencil of also being convenient for is filled and is finished the back and directly uses sticky tape or adhesive tape to further fixed to it simultaneously, need not at the manual fixed pencil pipe of winding in-process, thereby has saved the man-hour to further fixed of pencil pipe parcel.

Description

Wire harness tube

Technical Field

The utility model relates to a manage technical field, especially relate to a wire harness pipe.

Background

The wire harness pipe is a pipe fitting capable of wrapping and protecting a cable, and is mainly used for providing dustproof, moistureproof and flame-retardant protection for a wire harness and preventing an external sharp object from puncturing the wire harness to cause disconnection or short circuit of the wire harness. The existing harness tube includes two types of the outer peripheral surface continuous and the outer peripheral surface having the slits. When the harness pipe with the continuous outer peripheral surface is filled with the harness, the operation is difficult, and the harness needs to be stretched into one end of the harness pipe and led out from the other end of the harness pipe; the wire harness tube with the notch on the outer peripheral surface is convenient for a user to fill the wire harness from the notch, but the protection effect of the wire harness tube is not ideal enough, the notch on the outer peripheral surface is easy to open, so that the wire harness is exposed from the notch, and the moisture-proof, dust-proof and flame-retardant effects on the wire harness are poor; in addition, when the bundle pipe is wrapped by the adhesive tape or the adhesive tape, the pipe materials on two sides of the cut are required to be fixed, the condition that the cut is opened to cause poor wrapping of the adhesive tape is avoided, and the labor hour consumption of an operator is increased.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for an improved cable harness tube.

The utility model provides a wire harness tube, the peripheral wall of which is provided with a cutting part for forming a notch, the cutting part extends along the length direction of the wire harness tube, and the peripheral wall of the wire harness tube forms a first wall plate and a second wall plate respectively at two sides of the cutting part along the circumferential direction; the contraction radius of the inner wall surface of the first wall plate is smaller than that of the inner wall surface of the second wall plate, and the inner wall surface of the first wall plate can cover and abut against the outer wall surface of the second wall plate.

In one embodiment, the cutting part protrudes in a direction opposite to the direction away from the inner cavity of the wiring harness pipe and forms a cutting lug; or the cutting part is sunken towards the inner cavity of the wire harness pipe to form a cutting groove.

So set up, the cutting lug is more convenient for use external instrument to cut it off, and the cutting groove has the guide effect to cutting tool, is convenient for dig out the pencil pipe along the direction that the cutting groove extends.

In one embodiment, the thickness of the cutting portion is less than the thickness of the first wall plate; and/or the thickness of the cutting part is smaller than that of the second wall plate.

So set up, the wallboard material thickness of cutting part is thinner for the material thickness of pencil outside of tubes periphery other region, and the quick cutting of being more convenient for forms the incision.

In one embodiment, the part of the inner wall surface of the first wall plate, which abuts against the outer wall surface of the second wall plate, forms a covering surface, and the area of the covering surface accounts for 10% -30% of the area of the wire harness pipe.

So set up, it is bigger to cover the region of overlapping between first wallboard and the second wallboard, can prevent first wallboard and the mutual slippage of second wallboard and separation to guarantee the stability of pencil pipe long-time use, prevent that the incision is unexpected to be opened.

In one embodiment, the covering surface has the same width dimension in the circumferential direction of the bundle pipe, and the two boundaries of the covering surface in the circumferential direction form an angle of 68 ° to 72 ° with the corresponding axial center of the bundle pipe.

According to the arrangement, under the condition that the inner wall surface of the first wallboard covers and abuts against the outer wall surface of the second wallboard, along the axis direction of the line bundle pipe, the pressing force of the first wallboard acting on the second wallboard is uniform, the retraction trend is consistent, and the probability that the notch is opened due to the fact that the first wallboard slips from the outer wall surface of the second wallboard is further reduced; the ratio of the overlapping area of the two to the area of the outer peripheral wall of the bundle tube is about 20%.

In one embodiment, the first wall plate is provided with a first matching part, the second wall plate is provided with a second matching part, the first matching part and the second matching part extend along the length direction of the harness pipe, and the first matching part and the second matching part are both protruded along the direction departing from the inner cavity of the harness pipe or both sunken towards the inner cavity of the harness pipe; the inner wall surface of the first wall plate is fixedly connected to the outer wall surface of the second wall plate through the matching between the first matching part and the second matching part.

So set up, when first wallboard covers and butt second wallboard, the cooperation between first cooperation portion and the second cooperation portion is fixed and is showing the form steadiness that has improved the pencil pipe, has further reduced the risk of first wallboard and second wallboard separation or slippage each other, and then has improved the protection effect to inside pencil.

In one embodiment, the wire harness pipe is a corrugated pipe, a plurality of annular grooves are circumferentially arranged on the corrugated pipe and are distributed at intervals along the axial direction of the corrugated pipe, wide-diameter sections are formed between every two adjacent annular grooves, and annular abutting walls are formed on two sides of each wide-diameter section along the length direction of the wire harness pipe; the annular abutting wall of the first wall plate can abut against and be fixed to the annular abutting wall of the second wall plate at the same axial height.

So set up, when first wallboard covers and butt second wallboard, first wallboard is restricted by annular butt wall for the axial motion of third wallboard, prevents that the two from relatively sliding along the pencil tube axial between the two, is favorable to improving the fixed reliability of pencil tube, prevents especially that the pencil tube from opening at the accident of the in-process incision of buckling, has strengthened pencil tube's suitability.

In one embodiment, the second wall plate is provided with a first limiting convex rib which is outwards protruded relative to the outer wall surface far away from the first wall plate, the first limiting convex rib extends along the length direction of the line bundle pipe, and the first limiting convex rib can stop the first wall plate.

So set up, the area that first wallboard covered the second wallboard is definite to make the shape and the external diameter of pencil pipe definite, avoid first wallboard to cover the second wallboard excessively.

In one embodiment, the peripheral wall of the harness tube forms a third wall plate on a side of the first stopper rib opposite to the side away from the second wall plate; the outer wall surface of the first panel is flush with the outer wall surface of the third panel in a state where the inner wall surface of the first panel is covered and abutted against the outer wall surface of the second panel.

So set up, when first wallboard covers and butt second wallboard, formed smooth outer wall face between first wallboard and the third wallboard for the outside of pencil pipe is more smooth-going, can not produce at first wallboard incision section position and obviously suddenly, is favorable to closely twining the sticky tape to pencil pipe, and then improves pencil pipe to the protection effect of pencil.

In one embodiment, the inner wall of the first wall plate protrudes towards the inner cavity of the wire harness tube to form a second limiting convex rib, the second limiting convex rib extends along the length direction of the wire harness tube, and the second limiting convex rib can stop the second wall plate.

By the arrangement, when the first wall plate covers and abuts against the second wall plate, the interior of the wire harness tends to be smooth, and the cut section of the second wall plate is not obviously abrupt, so that the second wall plate is prevented from interfering with the extrusion of the internal wire harness, and poor wire filling is avoided.

The utility model provides a pencil pipe is convenient for popularize and apply in the industry, can reach and form the incision through cutting the cutting part, conveniently fill the pencil, shorten and load required man-hour, also be convenient for the operator to directly use sticky tape or adhesive tape to further fix it after the pencil is filled to the completion simultaneously, need not to fix the pencil pipe in the manual work in winding process, saved and wrapped up thus further fixed man-hour to the pencil pipe; in addition, the first wall plate covers and clings to the second wall plate, so that the wire harness pipe can reliably close the cut, the cut is prevented from being opened, the internal wire harness is exposed, the dustproof, moistureproof and flame retardant effects are better, and external dust can be prevented from entering the wire harness pipe; the utility model discloses have the wiring convenience of the pencil pipe that has the incision concurrently, also have double-walled pencil pipe simultaneously and to the protection effect of pencil, compare in double-walled pencil pipe more practiced thrift the pipe shaft material to easily make, be favorable to reduction in production cost.

Drawings

Fig. 1 is a schematic perspective view of a cable harness according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the cable harness tube of FIG. 1 in a first configuration;

FIG. 3 is a cross-sectional view of the cable harness tube of FIG. 1 in a second state.

100. A harness tube; 10. a cutting section; 20. a first wall panel; 30. a second wall panel; 40. an annular groove; 50. A wide diameter section; 51. an annular abutment wall; 60. a first limit bead; 61. a first limiting wall plate; 70. a second limiting convex rib; 71. a second limiting wall plate; 80. a third wall panel; 90. a fourth wall panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

A harness tube is a tube that can wrap and protect cables, and the wiring harness is usually packed in groups in a cavity inside the harness tube. The wire harness tube is mainly used for providing dustproof, moistureproof and flame-retardant protection for the wire harness, and meanwhile, the tube wall of the wire harness tube can prevent an external sharp object from puncturing the wire harness to cause open circuit or short circuit of the wire harness.

The existing harness tube includes two types of the outer peripheral surface continuous and the outer peripheral surface having the slits. When the harness pipe with the continuous outer peripheral surface is filled with the harness, the operation is difficult, and the harness needs to be stretched into one end of the harness pipe and led out from the other end of the harness pipe; although the wiring harness pipe with the notch on the outer peripheral surface is convenient for a user to fill the wiring harness from the notch, the protection effect of the wiring harness pipe on the wiring harness is not ideal, the notch on the outer peripheral surface is easy to open, so that the wiring harness is exposed from the notch, and the moisture-proof, dust-proof and flame-retardant effects on the wiring harness are poor; in addition, when the bundle pipe is wrapped by the adhesive tape or the adhesive tape, the pipe materials on two sides of the cut are required to be fixed, the condition that the cut is opened to cause poor wrapping of the adhesive tape is avoided, and the labor hour consumption of an operator is increased.

Referring to fig. 1 to 3, fig. 1 is a schematic perspective view of a wire harness tube 100 according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of the harness tube 100 of FIG. 1 in a first configuration; FIG. 3 is a cross-sectional view of the bundle tube 100 of FIG. 1 in a second state.

The utility model provides a wire harness tube 100, which can be made of material with deformability and has certain elasticity; the outer peripheral wall of the wire harness tube 100 is provided with a cutting part 10 for forming a cut, the cutting part 10 extends along the length direction of the wire harness tube 100, and the outer peripheral wall of the wire harness tube 100 forms a first wall plate 20 and a second wall plate 30 on two sides of the cutting part 10 along the circumferential direction; the contraction radius of the inner wall surface of the first wall plate 20 is smaller than that of the inner wall surface of the second wall plate 30, and the inner wall surface of the first wall plate 20 can cover and abut against the outer wall surface of the second wall plate 30.

In particular, the contraction radius is a radius with respect to the axis of the cable pipe 100 when the first wall plate 20 and the second wall plate 30 are naturally contracted without an external force. At this time, the first wall plate 20 and the second wall plate 30 have no internal stress. The first wall plate 20 has a smaller contraction radius than the second wall plate 30, and thus the first wall plate 20 has a more significant tendency to contract toward the inner cavity of the harness tube 100. When an external force is applied to the harness tube 100, the first wall plate 20 is pulled out and positioned at one side of the second wall plate 30 relatively far away from the axis of the harness tube 100, the first wall plate 20 retracts towards the inner cavity of the harness tube 100 due to the elasticity of the first wall plate 20 until the inner wall surface of the first wall plate covers and presses the outer wall surface of the second wall plate 30, and therefore the first wall plate 20 compresses and fixes the second wall plate 30.

When the wire harness pipe 100 is a bent pipe, the cutting part 10 extends along a center line of the wire harness pipe 100, and the direction of the center line represents the length direction of the wire harness pipe 100 from one end to the other end; when the harness pipe 100 is a straight pipe, the cut portion 10 extends in the axial direction of the harness pipe 100.

It should be noted that the above-mentioned cutting portion 10 extends along the axial direction of the harness tube 100, and should not be merely understood that the cutting portion 10 extends parallel to the axial direction of the harness tube 100; in other words, the cut portion 10 may extend along a generatrix of the outer peripheral surface of the wire harness tube 100, or may not extend along the generatrix, and any trajectory or direction directed from one end to the other end of the wire harness tube 100 on the outer peripheral surface of the wire harness tube 100 may be used as the trajectory or direction in which the cut portion 10 extends. For convenience of description, the wire harness 100 will be described below as a straight tube.

The cut portion 10 can be broken in its extending direction to form a slit for filling the wire harness. In the state where the cut portion 10 is broken, the wire harness tube 100 has a first form and a second form: in the first mode, the actual radius of the inner wall surface of the first wall plate 20 is smaller than the actual radius of the inner wall surface of the second wall plate 30, and the first wall plate 20 is positioned on the side of the second wall plate 30 relatively close to the inner cavity of the harness tube 100, and the second wall plate 30 covers the first wall plate 20 when viewed from the outside of the harness tube 100; in the second form, the actual radius of the inner wall surface of the first panel 20 is larger than the radius of the inner wall surface of the second panel 30, and the inner wall surface of the first panel 20 covers the outer wall surface of the second panel 30.

In the present invention, the ranges of the first wall plate 20 and the second wall plate 30 respectively include, but are not necessarily limited to, the portions where the pipe walls of the two sides are overlapped most after the cutting portion 10 is cut off. As shown in fig. 2, the first wall plate 20 includes a wall plate having an axial angle α with respect to the harness pipe 100 on the left side of the cut portion 10, and the second wall plate 30 includes a wall plate having an axial angle β with respect to the harness pipe 100 on the right side of the cut portion 10.

When the bundle tube 100 is produced, the first wall plate 20 is firstly pressed into one side of the second wall plate 30 relatively close to the inner cavity of the bundle tube 100, the bundle tube 100 is heated for a period of time to generate plastic deformation, at the moment, the first wall plate 20 retracts towards the inside of the bundle tube 100, and the radius of the inner wall surface of the first wall plate 20, namely the distance from a certain point of the inner wall surface of the first wall plate 20 to the axis, is smaller than the radius of the inner wall surface of the second wall plate 30; then, the first wall plate 20 is drawn out from the inner cavity of the harness tube 100 and covered with the second wall plate 30, at this time, the first wall plate 20 tends to rebound and contract toward the inner cavity of the harness tube 100, and the outer wall surface of the second wall plate 30 is pressed by the self-rebound action, so that the inner wall surface of the first wall plate 20 is tightly attached to the outer wall surface of the second wall plate 30, and the first wall plate 20 and the second wall plate 30 are covered and overlapped to realize relative fixation.

The cutting part 10 can protrude outwards along the direction departing from the inner cavity of the wire harness tube 100 to form a cutting convex block on the outer circumferential wall of the wire harness tube 100, so that an external tool can be used for cutting off the protruding rib to form a notch, and can also be sunken towards the inner cavity of the wire harness tube 100 to form a cutting groove, and the cutting groove has a guiding effect on a cutting tool and is convenient for planing the wire harness tube 100 along the extending direction of the cutting groove; specifically, in a preferred embodiment of the present invention, the cutting portion 10 is a protruding rib structure formed by protruding in a direction away from the inner cavity of the wire harness tube 100.

In particular, in the preferred embodiment of the present invention, the wire harness tube 100 is a corrugated tube that can be bent and deformed, and the corrugated tube is a straight tube segment in a normal state. A plurality of annular grooves 40 which are sunken inwards are formed in the peripheral surface of the corrugated pipe along the circumferential direction, the annular grooves 40 are distributed at intervals along the axial direction of the corrugated pipe, a wide-diameter section 50 is formed between every two adjacent annular grooves 40, and annular abutting walls 51 are formed on two sides of each wide-diameter section 50 along the length direction of the bundled pipe 100; in the second form, the annular abutment wall 51a of the first wall plate 20 can abut and be fixed to the annular abutment wall 51b of the second wall plate 30 at the same axial height.

With such an arrangement, in the second form, the axial movement of the first wall plate 20 relative to the third wall plate 80 is limited by the annular abutting wall 51, so as to prevent the relative axial sliding between the first wall plate and the third wall plate along the wire harness tube 100, which is beneficial to improving the fixing reliability of the wire harness tube 100, and particularly, preventing the notch of the wire harness tube 100 from being opened accidentally during the bending process, thereby enhancing the applicability of the wire harness tube 100.

The corrugated tube is a common form of the wire harness tube 100, and has advantages of easy bending, large deflection deformation, difficult tube body breakage, and durability. It is understood that in other embodiments, the harness tube 100 may be a tube segment that is not provided with the annular groove 40.

Further, in one of the embodiments, the thickness of the cut portion 10 is smaller than the thickness of the first wall panel 20; and/or the thickness of the cut-out 10 is less than the thickness of the second wall panel 30.

With this arrangement, the thickness of the wall plate material of the cutting portion 10 is smaller than the thickness of the material of the other regions of the outer periphery of the harness tube 100, which facilitates rapid cutting and forming of the slit.

Further, in the second form, a portion of the inner wall surface of the first wall plate 20 abutting against the outer wall surface of the second wall plate 30 forms a covering surface, and the area of the covering surface occupies 10% to 30% of the area of the bundle tube 100.

Specifically, in the present embodiment, the covering surface is an area overlapping with the first wall panel 20 on the second wall panel 30; the area of the harness tube 100 refers to an area of which the side can be directly observed, excluding an area where the outer wall surface of the second wall plate 30 is covered by the first wall plate 20.

So set up, the region of covering overlap between first wallboard 20 and the second wallboard 30 is bigger, can prevent that first wallboard 20 and second wallboard 30 from slipping each other and separating to guarantee the stability of pencil pipe 100 long-time use, prevent that the incision is unexpected to be opened.

Further, in one preferred embodiment, the width dimension of the covering surface in the circumferential direction of the harness tube 100 is the same, that is, the width dimension of the overlapping region of the first wall plate 20 and the second wall plate 30 in the circumferential direction of the harness tube 100 is the same, that is, the circumferential width dimension of the region where the first wall plate 20 and the second wall plate 30 overlap each other is uniform at any axial height of the harness tube 100, and the angle between the two boundaries of the covering surface in the axial direction and the corresponding axial center of the harness tube 100 is 68 ° to 72 °.

The angle between the two boundaries of the covering surface in the axial direction and the axis corresponding to the wire harness pipe 100 in the present embodiment means that the angle between the edge of the overlapping portion of the first wall plate 20 and the second wall plate 30 and the line connecting the axes is θ when viewed from one end of the wire harness pipe 100, as shown in fig. 3.

With such arrangement, in the second state along the axial direction of the wire harness tube 100, the pressing force of the first wall plate 20 on the second wall plate 30 is uniform, the retraction trends of the pressing force are consistent, and the probability of opening the notch due to the fact that the first wall plate 20 slides off from the outer wall surface of the second wall plate 30 is further reduced; the ratio of the overlapping area of the two to the area of the outer peripheral wall of the harness tube 100 is about 20%.

Further, a first matching portion (not shown) is arranged on the first wall plate 20, a second matching portion (not shown) is arranged on the second wall plate 30, the first matching portion and the second matching portion both extend along the length direction of the wire harness tube 100, and both the first matching portion and the second matching portion protrude along a direction departing from the inner cavity of the wire harness tube 100 or both recess towards the inner cavity of the wire harness tube 100; in the second form, the inner wall surface of the first wall plate 20 is fixedly connected to the outer wall surface of the second wall plate 30 by the engagement between the first engaging portion and the second engaging portion.

So set up, when first wallboard 20 overlaps with second wallboard 30 and covers, the cooperation between first cooperation portion and the second cooperation portion is fixed and is showing the form steadiness that has improved pencil pipe 100, has further reduced the risk that first wallboard 20 and second wallboard 30 separated or slipped each other, and then has improved the protection effect to inside pencil.

First cooperation portion and second cooperation portion can be the protruding rib structure that sets up at the pencil pipe 100 outer peripheral face, the second cooperation portion is established to the inboard cover of first cooperation portion promptly, also can be the recess of pencil pipe 100 outer peripheral face, the inner wall of first cooperation portion inlays locates the second cooperation portion, the two can be along pencil pipe 100 length direction continuous setting, perhaps be interrupted the setting, the first cooperation portion and the second cooperation portion of being interrupted the setting can also provide the effect to pencil pipe 100 axial fixity along first wallboard 20 and second wallboard 30.

Further, in one embodiment, the outer peripheral surface of the second wall plate 30 is provided with a first stopper rib 60 in a protruding manner, the first stopper rib 60 extends along the length direction of the bundle tube 100, and the first stopper rib 60 can stop the first wall plate 20.

A first limiting wall plate 61 is formed between the first limiting convex rib 60 and the second wall plate 30, the first limiting convex rib 60 is higher than the outer peripheral wall of the second wall plate 30, namely, on the same axial height of the wiring harness pipe 100, the corresponding radius of the first limiting convex rib 60 is larger than the radius of the outer wall surface of the second wall plate 30, the outer diameter of the wiring harness pipe 100 is obviously reduced from the first limiting convex rib 60 to the second wall plate 30, and the reduced difference value is the height of the first limiting wall plate 61; in the second form, the end surface of the first wall plate 20 at the notch abuts against the first stopper wall plate 61, so that the shape and the outer diameter of the harness tube 100 are determined.

With this arrangement, the area of the first wall plate 20 covering the second wall plate 30 is determined, so that the shape and the outer diameter of the harness pipe 100 are determined, and the first wall plate 20 is prevented from excessively covering the second wall plate 30.

The first stopper ribs 60 may be provided continuously along the longitudinal direction of the bundle tube 100, or may be provided at intervals along the longitudinal direction, as long as the first stopper wall plate 61 can abut against the cut end surface of the first wall plate 20, thereby restricting the position of the first wall plate 20 and the area covering the second wall plate 30.

Further, it is preferable that the outer peripheral wall of the wire harness tube 100 is formed with a third wall plate 80 on a side of the first stopper projection 60 relatively distant from the second wall plate 30, and a radius of the outer wall surface of the third wall plate 80 is larger than a radius of the outer wall surface of the second wall plate 30; in the second form, the outer wall surface of the first wall plate 20 is flush with the outer wall surface of the third wall plate 80, that is, the thickness of the end surface of the first wall plate 20 at the notch is equal to the height of the first restriction wall plate 61.

So set up, under the second form, formed smooth outer wall between first wallboard 20 and the third wallboard 80 for the outside of pencil pipe 100 is more smooth, can not produce obvious obtrusiveness at first wallboard 20 incision section position, is favorable to closely twining the sticky tape to pencil pipe 100, and then improves pencil pipe 100 to the protection effect of pencil.

Further, the inner circumferential surface of the first wall plate 20 is inwardly protruded to form a second limiting protrusion 70, the second limiting protrusion 70 extends in the length direction of the wire harness 100, and the second limiting protrusion 70 can stop the second wall plate 30.

A second limit wall plate 71 is formed between the second limit rib 70 and the first wall plate 20, namely the radius of the inner wall surface of the second limit rib 70 is smaller than that of the inner wall surface of the first wall plate 20; in the second configuration, the section of the second wall plate 30 at the notch abuts against the second stopper wall plate 71.

With this arrangement, the area of the third wall plate 80 covered by the first wall plate 20 is determined, so that the shape and outer diameter of the harness tube 100 are determined, and the second wall plate 30 is prevented from being excessively covered by the first wall plate 20.

Preferably, the inner wall surface of the wire harness tube 100 forms a fourth wall plate 90 on the side of the second limit projection 70 relatively far away from the first wall plate 20, and the radius of the inner wall surface of the fourth wall plate 90 is smaller than that of the inner wall surface of the first wall plate 20; in the second form, the second wall plate 30 and the fourth wall plate 90 are in curved surface transition, and the radius of the inner wall surface of the second wall plate 30 is equal to that of the inner wall surface of the fourth wall plate 90 at the same axial height of the bundle tube 100, that is, the thickness of the end surface of the second wall plate 30 at the notch is equal to the height of the second limiting wall plate 71.

Thus, in the second form, a smooth inner wall surface is formed between the second wall plate 30 and the fourth wall plate 90, the interior of the wire harness tube 100 tends to be smooth, and no obvious abrupt change is generated at the cut section of the second wall plate 30, so that the second wall plate 30 is prevented from interfering with the extruded inner wire harness, and poor wire filling is prevented.

The utility model provides a pencil pipe 100 is convenient for the industry to popularize and apply, can enough form the incision through cutting part 10, conveniently fill the pencil, shorten and load required man-hour, also be convenient for the operator to directly use sticky tape or adhesive tape to further fix it after the pencil is filled to the completion simultaneously, need not to fix pencil pipe 100 in the winding process manually, saved and wrapped up pencil pipe 100 and thus further fixed man-hour; in addition, the first wall plate 20 covers and clings to the second wall plate 30, so that the wire harness tube 100 can reliably close the incision, the incision is prevented from being opened, the internal wire harness is exposed, better dustproof, damp-proof and flame-retardant effects are achieved, and external dust can be prevented from entering the wire harness tube 100. The utility model discloses have the wiring convenience of the pencil pipe that has the incision concurrently, also have double-walled pencil pipe simultaneously and to the protection effect of pencil, compare in double-walled pencil pipe more practiced thrift the pipe shaft material to easily make, be favorable to reduction in production cost.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. A harness tube, characterized in that the peripheral wall of the harness tube is provided with a cut part (10) for forming a cut, the cut part (10) extends along the length direction of the harness tube, and a first wall plate (20) and a second wall plate (30) are respectively formed on two sides of the cut part (10) along the circumferential direction of the peripheral wall of the harness tube;

the contraction radius of the inner wall surface of the first wall plate is smaller than that of the inner wall surface of the second wall plate, and the inner wall surface of the first wall plate can cover and abut against the outer wall surface of the second wall plate.

2. Harness tube according to claim 1, characterised in that the cutting portion (10) projects in a direction relatively away from the inner cavity of the harness tube and forms a cutting cam; or,

the cutting part (10) is sunken towards the inner cavity direction of the wire harness pipe and forms a cutting groove.

3. Harness tube according to claim 1, characterized in that the thickness of the cut (10) is smaller than the thickness of the first wall panel (20); and/or the presence of a catalyst in the reaction mixture,

the thickness of the cut (10) is less than the thickness of the second wall panel (30).

4. The wire harness tube according to claim 1, wherein a portion of the first panel inner wall surface abutting the second panel outer wall surface forms a covering surface, and an area of the covering surface occupies 10% to 30% of an area of the wire harness tube.

5. The harness tube as claimed in claim 4, wherein the covering surface has the same width dimension in the circumferential direction of the harness tube, and two boundaries of the covering surface in the circumferential direction have an angle of 68 ° to 72 ° with the corresponding axial center of the harness tube.

6. The harness tube according to claim 1, wherein the first wall plate (20) is provided with a first engaging portion, the second wall plate (30) is provided with a second engaging portion, the first engaging portion and the second engaging portion extend along the length direction of the harness tube, and the first engaging portion and the second engaging portion are both protruded in a direction away from the inner cavity of the harness tube or both are recessed in a direction toward the inner cavity of the harness tube;

the inner wall surface of the first wall plate (20) is fixedly connected to the outer wall surface of the second wall plate (30) through the matching between the first matching part and the second matching part.

7. The wire harness pipe according to claim 1, wherein the wire harness pipe is a corrugated pipe, the corrugated pipe is provided with a plurality of annular grooves (40) along a circumferential direction, the plurality of annular grooves (40) are distributed at intervals along an axial direction of the corrugated pipe, a wide-diameter section (50) is formed between two adjacent annular grooves (40), and each wide-diameter section (50) forms an annular abutting wall (51) along two sides of the length direction of the wire harness pipe;

the annular abutting wall (51) of the first wall plate (20) can abut against and be fixed to the annular abutting wall (51) of the second wall plate (30) at the same axial height.

8. The harness tube as claimed in claim 1, wherein the second wall plate (30) is outwardly protruded from an outer wall surface of the first wall plate (20) to form a first stopper rib (60), the first stopper rib (60) extending along a length direction of the harness tube; the first stopper rib (60) is capable of stopping the first wall panel (20).

9. The harness tube according to claim 8, wherein the peripheral wall of the harness tube forms a third wall plate (80) on a side of the first retention bead (60) opposite to the second wall plate (30);

the outer wall surface of the first wall plate (20) is flush with the outer wall surface of the third wall plate (80) in a state where the inner wall surface of the first wall plate (20) is covered and in contact with the outer wall surface of the second wall plate (30).

10. The wire harness tube according to claim 1, wherein the inner wall of the first wall plate (20) is protruded to form a second limiting convex rib (70) facing the inner cavity of the wire harness tube, and the second limiting convex rib (70) extends along the length direction of the wire harness tube;

the second stop rib (70) can stop the second wall plate (30).

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