CN113471898B

CN113471898B - Protector and wire harness

Info

Publication number: CN113471898B
Application number: CN202110336433.4A
Authority: CN
Inventors: 小川真由; 中安政文; 池田晋一; 后藤真
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2020-03-30
Filing date: 2021-03-29
Publication date: 2022-09-06
Anticipated expiration: 2041-03-29
Also published as: JP7083861B2; CN113471898A; DE102021107397A1; JP2021158901A

Abstract

The purpose of the present invention is to improve the protection function of an electric wire. The protector outer wall surface (1w) is provided with: an external housing chamber (40) in which an external electric wire (We2) is housed and wired from an electric wire insertion opening (40a), and which has a bottom wall surface (41) and side wall surfaces (42) that are provided upright from the bottom wall surface (41) and that are disposed facing each other with a space therebetween; a cross wall surface (44) of each side wall surface, which is connected with the wire insertion port side of the side wall surface in a cross state; and a front end wall surface (45) connected with the front end parts of the paired side wall surfaces and the cross wall surface, wherein the external accommodating chamber is provided with a wire leading-out opening (40b) leading out an external wire from the front end wall surface side to the outside, the front end wall surface is connected with the front end parts of the wire leading-out side of the paired side wall surfaces and the cross wall surface in a crossed state, the side wall surfaces are formed into smooth wall surfaces without protrusions, and each crossed part (46A-46C) is formed into a curved surface shape which does not form scraping parts along with contact with the outer peripheral wall surface of the external wire.

Description

Protector and wire harness

Technical Field

The invention relates to a protector and a wire harness.

Background

Conventionally, in a wire harness, a protector for protecting an electric wire provided on an installation object such as a vehicle is sometimes provided. The protector further includes: a protector body that houses the electric wire from the opening; and a cover for closing the opening of the protector body, wherein the protector is arranged at a position to be protected in the electric wire. Such a protector and a wire harness are disclosed in, for example, patent document 1 below.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 6198183

Disclosure of Invention

Technical problem to be solved by the invention

However, the protector is sometimes formed to route a plurality of electric wires as protection objects in different routes. In this protector, all the electric wires are not necessarily routed through the housing chamber of the protector body. For example, there are some protectors in which electric wires drawn out of the housing chamber to the outside are wired along the outer wall surface, and there are also protectors in which wiring paths for the electric wires are provided in the housing chamber and outside the housing chamber and the electric wires are wired along the outer wall surface from the beginning to the end. Here, in the protector, the relative movement of the electric wires in the housing chamber with respect to the protector body is restricted by a holding portion in the housing chamber, a wall of the housing chamber, or the like. On the other hand, in the protector, depending on the shape and structure thereof, in the electric wires wired along the outer wall surface, the interval between the restricting positions where the relative movement is restricted by the holding portion or the like is sometimes long, and it is difficult to restrict the relative movement of the electric wires therebetween. In addition, the protector in this case may not sufficiently exhibit the function of protecting the electric wire by relatively moving the electric wire.

Accordingly, an object of the present invention is to provide a protector and a wire harness having an improved function of protecting an electric wire.

Means for solving the problems

In order to achieve the above object, a protector according to the present invention includes: a protector body formed with an internal housing chamber that houses and wires an internal electric wire from a body opening; and a cover that closes the body opening portion. The protector outer wall surface formed by the outer wall surfaces of the protector body and the cover is provided with: an external housing chamber for housing and wiring an external wire from a wire insertion port, the external housing chamber having a bottom wall surface disposed opposite to the wire insertion port with a space therebetween and side wall surfaces disposed opposite to each other with a space therebetween, the side wall surfaces being erected from the bottom wall surface toward the wire insertion port; a cross wall surface of each of the side wall surfaces, which is connected to the wire insertion port side of the side wall surface in a cross state; and a leading end wall surface connected to leading ends of the side wall surface and the intersecting wall surface of at least one combination of 2 combinations of the side wall surface and the intersecting wall surface in a paired intersecting state, the external housing chamber has a wire drawing-out port for drawing out the external wire wired in the external housing chamber along the wire insertion port, the bottom wall surface, and the side wall surfaces from the front end wall surface side to the outside, the leading end wall surface and the leading end portion of the wire lead-out side of each of the paired side wall surfaces and the intersecting wall surface are connected in a crossing state, the side wall surface is formed as a smooth wall surface without a projection, and the intersection portion between the pair of side wall surfaces and the intersecting wall surface, the intersection portion between the side wall surface and the leading end wall surface, and the intersection portion between the intersecting wall surface and the leading end wall surface are each formed into a curved surface shape as follows: the outer peripheral wall surface of the external wire is not provided with a scraping part generated along with contact.

Here, the front end wall surface is preferably formed in a curved surface shape.

Preferably, a corner portion where the side wall surface, the intersecting wall surface, and the front end wall surface intersect is formed in a curved surface shape as follows: the external wire that tries to go beyond the intersection of the intersection wall surface and the tip end wall surface can be returned to the bottom wall surface side by its own weight.

Preferably, the external housing chamber has a wire holding portion for holding the external wire in the external housing chamber, the protector outer wall surface is provided with a wire locking portion for locking relative movement of the external wire drawn out from the wire drawing port to the outside of the external housing chamber to the wire insertion port side, and a height of each of the side wall surfaces in a direction in which the side wall surface stands from the bottom wall surface is set to be a height of: at least between the wire holding portion and the wire locking portion, the external wire is not removed from the wire insertion opening when the relative movement of the external wire with respect to the protector outer wall surface is maximized.

Further, it is preferable that the front end wall surface, and the side wall surface and the intersecting wall surface connected to the front end wall surface are provided on the outer wall surface of the cover.

In order to achieve the above object, a wire harness according to the present invention includes: a wire group provided with at least an internal wire and an external wire; and a protector that protects the internal electric wire and the external electric wire, the protector including: a protector body having an internal housing chamber that houses the internal electric wires from a body opening and that routes the internal electric wires; and a cover that closes the body opening portion. The protector outer wall surface formed by the outer wall surfaces of the protector body and the cover is provided with: an external housing chamber that houses and wires the external wire from a wire insertion opening, and that has a bottom wall surface that is disposed opposite the wire insertion opening with a gap therebetween and side wall surfaces that are disposed opposite the wire insertion opening with a gap therebetween and that are erected from the bottom wall surface toward the wire insertion opening; a cross wall surface of each of the side wall surfaces, which is connected to the wire insertion port side of the side wall surface in a cross state; and a leading end wall surface connected to leading ends of the side wall surface and the intersecting wall surface of at least one combination of 2 combinations of the side wall surface and the intersecting wall surface in a paired intersecting state, the external housing chamber has a wire drawing-out port for drawing out the external wire wired in the external housing chamber along the wire insertion port, the bottom wall surface, and the side wall surfaces from the front end wall surface side to the outside, the leading end wall surface and the leading end portion of the wire lead-out side of each of the paired side wall surfaces and the intersecting wall surface are connected in a crossing state, the side wall surface is formed as a smooth wall surface without a projection, and each of an intersection portion of the pair of side wall surfaces and the intersecting wall surface, an intersection portion of the side wall surface and the leading end wall surface, and an intersection portion of the intersecting wall surface and the leading end wall surface is formed as a curved surface shape as follows: the scraping part generated along with the contact is not formed on the peripheral wall surface of the external wire.

Effects of the invention

In the protector according to the present invention, even if the relative movement of the external electric wire with respect to the protector outer wall surface cannot be restricted on the tip end portion side and the electric wire lead-out opening side, and the relative movement of the external electric wire led out from the electric wire lead-out opening with respect to the protector outer wall surface cannot be restricted, since the side wall surface is formed as a smooth wall surface without a projection, the impact of the side wall surface with respect to the external electric wire that has moved relative to the side wall surface can be alleviated. In the protector according to the present invention, the impact on the external electric wire relatively moved to the intersection can be alleviated by the intersection of the front end portion side and the electric wire lead-out side. As described above, in the protector according to the present invention, even when the external electric wires are moved relatively to the protector outer wall surface on the tip end side and the wire lead-out opening side, the external electric wires can be protected, and therefore, the durability of the external electric wires can be improved. Thus, the protector according to the present invention can improve the protection function for the external electric wire. Further, since the wire harness according to the present invention includes such a protector, the same effects as those obtained by the protector can be obtained.

Drawings

Fig. 1 is a perspective view showing a protector and a wire harness according to an embodiment.

Fig. 2 is a plan view showing the protector and the wire harness according to the embodiment.

Fig. 3 is an exploded perspective view of the protector and the wire harness, which partially shows the protector of the embodiment in an exploded manner.

Fig. 4 is a partially enlarged perspective view of the protector.

Fig. 5 is a perspective view of the protector partially enlarged as viewed from another angle.

Fig. 6 is a partially enlarged perspective view of the protector main body.

Fig. 7 is a partially enlarged perspective view of the cover.

Fig. 8 is a partially enlarged perspective view of the wire locking portion.

Description of the symbols

1 protector

1w protector outer wall surface

10 protector body

10a main body opening part

10b internal storage chamber

10w outer wall surface

11 bottom wall

11a bottom wall surface

12 side wall body of protector main body

20 cover

20w outer wall surface

21 cover body

22 side wall body of cover

40 external storage chamber

40a wire insertion port

40b electric wire outlet

41 bottom wall surface

42 side wall surface

43 electric wire holding part

44 intersecting wall surfaces

45 front end wall face

46A intersection

46B intersection

46C intersection

47 corner

50 wire locking part

We1 internal wire

We2 external wire

Weg wire group

WH wire harness

Detailed Description

Hereinafter, embodiments of the protector and the wire harness according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

[ embodiment ]

One embodiment of the protector and the wire harness according to the present invention will be described with reference to fig. 1 to 8.

Reference numeral 1 in fig. 1 to 3 denotes a protector according to the present embodiment. In addition, reference numeral WH in fig. 1 to 3 denotes a wire harness of the present embodiment. The wire harness WH includes electric wires mounted on a vehicle such as an automobile, and also includes a wire group Weg provided with at least an inner wire We1 and an outer wire We 2. The protector 1 is a wire protection member that protects the inner wire We1 and the outer wire We2, and the inner wire We1 is routed on the inside and the outer wire We2 is routed on the outside. The protector 1 is one of the components of the wire harness WH by assembling the inner electric wire We1 and the outer electric wire We2 inside and outside, respectively.

Here, each of the internal electric wire We1 and the external electric wire We2 may be constituted by 1 wire, or may be constituted as a wire bundle in which a plurality of wires are bundled into 1. The inner wire We1 and the outer wire We2 shown here are cylindrical in shape whether they are made up of 1 wire or a bundle of wires.

The protector 1 is molded from an insulating material such as synthetic resin. The protector 1 includes: a protector body 10 having an internal housing chamber 10b (fig. 6) that houses the internal electric wire We1 from a body opening 10a (fig. 6) and that routes the internal electric wire We 1; and a cover 20 that closes the main body opening 10a (fig. 1 to 7).

In the protector main body 10, an internal housing chamber 10b is formed as a structure for wiring at least 1 internal electric wire We 1. In the protector main body 10, when the plurality of internal wires We1 are wired, the internal housing chamber 10b is provided for each internal wire We 1.

The protector main body 10 has: a bottom wall 11 disposed opposite to the main opening 10a with a gap therebetween; and side walls 12 that are erected from the bottom wall surface 11a of the bottom wall 11 toward the main body opening 10a and are disposed facing each other with a space therebetween (fig. 6). In the protector main body 10, a space surrounded by the bottom wall 11 and the side walls 12 is used as an internal housing chamber 10 b. Thus, in the protector main body 10, when a plurality of internal housing chambers 10b are provided, the combination of the pair of side wall bodies 12 is erected from the bottom wall surface 11a of the bottom wall body 11 for each internal housing chamber 10 b.

In the protector main body 10, when the 2 internal housing chambers 10b are arranged adjacent to each other without being separated from each other, the side wall 12 arranged between the 2 internal housing chambers 10b may be shared by the internal housing chambers 10 b. Further, in the 1 common side wall body 12, a through hole, a slit, or the like may be provided so that the adjacent 2 internal storage chambers 10b partially communicate with each other within a range in which the adjacent internal electric wires We1 do not interfere with each other.

In addition, the protector body 10 may have other storage chambers in addition to the internal storage chamber 10 b. For example, the other housing chamber is a chamber that houses and holds a connector, a chamber that houses and routes wires of the connector, a chamber that merges and routes the internal wires We1 of the respective divided internal housing chambers 10b, and the like.

The protector body 10 may be formed of 1 component, or may be formed of a plurality of components assembled with each other.

In the protector body 10 shown here, 2 internal housing chambers 10b are arranged in parallel with a space therebetween when viewed from the body opening 10a side (fig. 6).

The cover 20 is assembled to the protector body 10, and closes the internal housing chamber 10b of the protector body 10 from the body opening 10a side.

The cover 20 has a lid body 21 (fig. 4, 5, and 7) that closes the internal storage chamber 10b from the main body opening 10a side. When the protector body 10 has a plurality of internal storage chambers 10b, the cover 20 may be provided with a cover body 21 for each internal storage chamber 10b, or may be provided with 1 cover body 21 for closing all internal storage chambers 10b from the body opening 10a side. The cover 20 may be provided with 1 lid 21 for closing the plurality of internal storage chambers 10b from the side of the main body opening 10 a. In this case, the cover 20 is provided with at least 1 cover 21 for closing a combination of the plurality of internal storage chambers 10b, and in some cases, at least 1 cover 21 for closing 1 internal storage chamber 10b is provided.

The cover 20 shown here is provided with a lid body 21 for each internal housing chamber 10 b. The cover 20 further includes side wall bodies 22 (fig. 4, 5, and 7) that are erected from the cover bodies 21 and are disposed to face each other with a space therebetween. The cover 20 has a combination of the lid body 21 and the respective side walls 22 for each internal receiving chamber 10 b. In the combination of the lid body 21 and the side walls 22, the side walls 12 of the protector body 10 are accommodated in the inner space thereof, whereby the inner accommodation chamber 10b formed by the side walls 12 of the protector body 10 is closed from the side of the body opening 10 a.

For convenience of explanation, a combination of the lid body 21 that closes one internal storage chamber 10B and the side wall body 22 that is erected from the lid body 21 is referred to as a first cover 20A, and a combination of the lid body 21 that closes the other internal storage chamber 10B and the side wall body 22 that is erected from the lid body 21 is referred to as a second cover 20B (fig. 1 to 5 and 7). In the cover 20, the first cover 20A and the second cover 20B are arranged in parallel with a space therebetween. The cover 20 has a coupling body 23 (fig. 4, 5, and 7) that couples the first cover 20A and the second cover 20B therebetween. The connecting body 23 connects the side wall bodies 22 disposed facing each other between the first cover 20A and the second cover 20B. The connecting member 23 shown here is formed in a flat plate shape, and connects the end portions of the side wall bodies 22 from the side of the direction in which the cover body 21 stands. The coupling body 23 shown here couples the tip end portion side and the wire lead-out opening 40B side, which will be described later, of the first cover 20A to the second cover 20B.

The cover 20 may be formed of 1 component, or may be formed of a plurality of components assembled with each other.

The protector 1 includes a lock mechanism 30 between the protector body 10 and the cover 20, and the assembled state of the protector body 10 and the cover 20 is maintained by the lock mechanism 30 (fig. 1 and 2). The lock mechanism 30 includes: a first locking body 31 provided in the protector body 10, and a second locking body 32 provided in the cover 20 (fig. 4 and 5). The lock mechanism 30 maintains the assembled state by bringing the first locking body 31 and the second locking body 32 into a state capable of locking with each other when the protector body 10 and the cover 20 are in the assembled state. For example, the first locking body 31 and the second locking body 32 have a claw portion on one of them and a locking portion on the other of them, and the locking portion hooks the claw portion when the protector body 10 and the cover 20 are in the assembled state. The protector 1 includes such lock mechanisms 30 at a plurality of locations.

In the protector 1, an outer wall surface (hereinafter referred to as "protector outer wall surface") 1w is formed by the outer wall surfaces 10w and 20w of the protector body 10 and the cover 20 in an assembled state (fig. 1, 4, and 5). In the protector 1 shown here, a part of the bottom wall surface 11a of the protector body 10 between the internal housing chambers 10b and the like also becomes the outer wall surface 10w of the protector body 10. The protector body 10 shown here is provided with a standing wall 13, and the standing wall 13 is erected from between the respective internal storage chambers 10B in the bottom wall surface 11a and is disposed between the first cover 20A and the second cover 20B of the cover 20 in the assembled state (fig. 1 and 4 to 6). The standing wall 13 extends in the wiring direction of the internal electric wire We1 in each internal housing room 10B, and is disposed facing the outer wall surface 22a of each side wall 22 disposed facing between the first cover 20A and the second cover 20B. Thus, in the protector 1, the wall surface of the standing wall 13 also serves as the outer wall surface 10w of the protector body 10. In the protector 1 shown here, the connecting member 23 of the cover 20 partially covers the bottom wall surface 11a between the respective internal storage chambers 10 b. Therefore, in the coupling member 23, the wall surface 23a on the lid 21 side becomes the outer wall surface 20w of the cover 20.

The protector 1 has the external electric wire We2 routed along the protector outer wall surface 1 w. Therefore, the protector outer wall surface 1w is provided with the external housing chamber 40, and the external wires We2 are housed and wired in the external housing chamber 40 from the wire insertion port 40a (fig. 1, 2, 4, and 5).

An external housing chamber 40 is formed in the protector outer wall surface 1w as a structure in which at least 1 external electric wire We2 is wired. In the protector outer wall surface 1w, when a plurality of external wires We2 are wired, the external storage room 40 is provided for each external wire We 2.

The external housing chamber 40 includes: a bottom wall surface 41 disposed opposite to the wire insertion port 40a with a space; and side wall surfaces 42 that are provided upright from the bottom wall surface 41 toward the wire insertion port 40a and are arranged facing each other with a space therebetween (fig. 4 and 5). That is, the outer storage chamber 40 is a space surrounded by the bottom wall surface 41 and the side wall surfaces 42. In the external housing chamber 40, the external electric wire We2 is routed along the wire insertion port 40a, the bottom wall surface 41, and the side wall surfaces 42. The external housing room 40 shown here is provided with 1 in each internal housing room 10b, and the external electric wires We2 are wired in substantially the same direction as the wiring direction of each internal electric wire We 1. The external housing chamber 40 has a wire outlet 40b, and the wire outlet 40b draws out an external wire We2 (fig. 4 and 5) wired in the chamber to the outside.

The bottom wall surface 41 is formed by at least one of the

outer wall surfaces

10w, 20w of the protector body 10 and the cover 20, respectively. The bottom wall surface 41 shown here is formed by the portion of the bottom wall surface 11a of the protector body 10 between the respective internal housing chambers 10b and serving as the protector outer wall surface 1w, and the wall surface 23a of the coupling body 23 of the cover 20 on the lid body 21 side (fig. 4 and 5).

Each of the side wall surfaces 42 is formed by at least one of the

outer wall surfaces

10w, 20w of the protector body 10 and the cover 20, respectively. One side wall surface 42 shown here is formed by outer wall surface 22a of side wall body 22 disposed opposite to second cover 20B in first cover 20A. The other side wall surface 42 shown here uses the standing wall 13 of the protector body 10 and the side wall body 22 of the second cover 20B. The other side wall surface 42 is formed by a wall surface 13a of the standing wall 13 disposed to face the first cover 20A and an outer wall surface 22a of the side wall body 22 of the second cover 20B disposed to face the first cover 20A (fig. 4 and 5). Here, a portion of the outer wall surface 22a of the side wall body 22 of the second cover 20B, which portion is connected to the wall surface 23a of the coupling body 23 on the lid body 21 side, is used as a portion of the other side wall surface 42.

The side wall surface 42 is formed as a smooth wall surface without a protrusion. The smooth wall surface without the protrusion means a wall surface where a parting line by a forming mold is not formed. Therefore, the mold for molding the protector body 10 is configured so that no parting line is formed on the wall surface 13a of the standing wall 13. The mold for forming the cover 20 is configured such that no parting line is formed on the outer wall surface 22a of each sidewall 22.

Each of the side wall surfaces 42 is preferably disposed to face each other at an interval equal to the outer diameter of the external electric wire We2 within a range in which the external electric wire We2 can be stored into the external storage room 40. Thus, in the external storage compartment 40, the amount of relative movement of the external electric wire We2 in the facing direction with respect to the protector outer wall surface 1w can be kept to a minimum.

Here, the external housing chamber 40 has the electric wire holding portion 43, and the electric wire holding portion 43 holds the external electric wire We2 in the chamber (fig. 1 to 3). The wire holding portion 43 includes: a pair of cantilevered pieces 43a that are provided upright from the bottom wall surface 11a of the protector body 10 and are arranged facing each other in the facing direction of the internal housing chambers 10 b; and a pair of locking piece portions 43b that project from the free end of each piece portion 43a toward the other piece portion 43a and are disposed facing each other with a space therebetween (fig. 4 to 6). The external electric wire We2 is inserted between the respective locking piece portions 43b and the respective piece portions 43 a. In the wire holding portion 43, the relative movement of the external wire We2 in the facing direction with respect to the protector outer wall surface 1w is restricted by the respective piece portions 43a, and the relative movement of the external wire We2 in the direction opposite to the insertion direction with respect to the protector outer wall surface 1w is restricted by the respective locking piece portions 43 b.

The wire holding portion 43 is provided in 2 places in the external housing chamber 40 (fig. 1 to 3). The combination of the one "piece portion 43a and the locking piece portion 43B" in the one wire holding portion 43 is arranged between the wall surface 13a of the standing wall 13 constituting the other side wall surface 42 and the outer wall surface 22a of the side wall body 22 of the second cover 20B (fig. 4 and 5). In the external housing chamber 40 shown here, the other wire holding portion 43 is arranged on the side opposite to the wire lead-out opening 40b side and the tip end portion side described later with respect to the one wire holding portion 43.

Moreover, a cross wall surface 44 is provided on the protector outer wall surface 1w for each side wall surface 42, and the cross wall surface 44 is connected to the side of the side wall surface 42 of the external storage chamber 40 on the wire insertion port 40a side in a cross state (fig. 4 and 5). Here, the side wall surface 42 is orthogonal to the intersecting wall surface 44. The intersecting wall surface 44 is formed by the outer wall surface 20w of the cover 20. One intersecting wall surface 44 shown here is formed by the outer wall surface 21a of the lid body 21 in the first cover 20A. The other intersecting wall surface 44 shown here is formed by a portion of the outer wall surface 21a of the lid body 21 in the second cover 20B that is continuous with the outer wall surface 22a of the side wall body 22 constituting the other side wall surface 42.

In this way, 2 combinations of the side wall surface 42 and the intersecting wall surface 44 are provided on the protector outer wall surface 1w in a paired and intersecting state. The protector outer wall surface 1w is further provided with a front end wall surface 45, and the front end wall surface 45 is connected to the front end portions of the side wall surface 42 and the intersecting wall surface 44 of at least one of the 2 combinations (fig. 4 and 5). The tip end portion is an end portion on the wire outlet 40b side in the wiring direction of the external wire We 2. The wire outlet 40b is formed adjacent to the front end wall surface 45 in the facing direction of the side wall surfaces 42, and is formed to draw the indoor external wire We2 of the external storage compartment 40 outward from the front end wall surface 45 side.

The front end wall surface 45 is connected to the respective front end portions of the pair of side wall surfaces 42 and the cross wall surface 44 on the wire drawing port 40b side in a cross state. The front end wall surface 45 shown here is provided so as to be connected to the outer wall surface 21a of the lid body 21 of the first cover 20A and the respective front end portions of the outer wall surfaces 22a of the respective side wall bodies 22 in an orthogonal state. That is, the front end wall surface 45, and the side wall surface 42 and the intersecting wall surface 44 connected to the front end wall surface 45 are provided on the outer wall surface 20w of the cover 20.

In the protector 1, an intersection 46A of the pair of side wall surfaces 42 and the intersecting wall surface 44 is formed into the following curved surface shape (for example, a curved surface shape composed of 1 or more large radii of curvature): when the external electric wire We2 comes into contact with the external electric wire We2 due to running vibration of the vehicle or the like, a scraping portion (fig. 4 and 5) accompanying the contact is not formed on the outer peripheral wall surface. One of the intersections 46A of the pair of side wall surfaces 42 and the intersecting wall surface 44 is a portion where the outer wall surface 21a of the lid body 21 and the outer wall surface 22a of the side wall body 22 on the second cover 20B side intersect in the first cover 20A. In the first cover 20A, a portion where the outer wall surface 21a of the cover body 21 and the outer wall surface 22a of the side wall body 22 intersect is formed into the above-described curved surface shape at least on the leading end side and the wire drawing port 40b side of the one wire holding portion 43. The other of intersection portions 46A of paired side wall surfaces 42 and intersecting wall surface 44 is a portion where outer wall surface 22a of side wall body 22 of second cover 20B constituting the other side wall surface 42 intersects outer wall surface 21a of lid body 21 of second cover 20B constituting the other intersecting wall surface 44. Here, the portion of the second cover 20B where the outer wall surface 21a of the lid body 21 and the outer wall surface 22a of the side wall body 22 intersect is formed into the above-described curved surface shape. In the second cover 20B, the portion where the outer wall surface 21a of the lid body 21 and the outer wall surface 22a of the side wall body 22 intersect, adjacent to the external electric wire We2 drawn out from the electric wire draw-out port 40B, is also preferably formed into the curved surface shape as described above.

In the protector 1, the intersection 46B of the side wall surface 42 and the tip end wall surface 45 is also formed into a curved surface shape as described above (fig. 4 and 5). The intersection 46B shown here is a portion of the first cover 20A where the outer wall surface 22a of the sidewall 22 on the second cover 20B side intersects the front end wall surface 45.

In the protector 1, the intersection 46C between the intersection wall surface 44 and the front end wall surface 45 is also formed into a curved surface shape as described above (fig. 4 and 5). The intersection 46C shown here is a portion where the outer wall surface 21a of the lid body 21 and the front end wall surface 45 intersect in the first cover 20A.

The intersection 46D of the bottom wall surface 41 and the side wall surface 42 is formed in a chamfered shape or a curved shape, but is formed in a shape not abutting against the outer peripheral wall surface of the external electric wire We2 (fig. 4 and 5).

In the protector 1 of the present embodiment, since the relative movement of the external electric wire We2 with respect to the protector outer wall surface 1w is restricted between the electric wire holding portions 43, the impact of the protector body 10 and the cover 20 on the external electric wire We2 can be alleviated. Therefore, the protector 1 can protect the external electric wire We2 between the electric wire holding portions 43, and thus can improve the durability of the external electric wire We 2.

Further, in the protector 1 of the present embodiment, even if the relative movement of the external electric wire We2 with respect to the protector outer wall surface 1w cannot be restricted on the tip end side and the electric wire lead-out opening 40b side with respect to the one electric wire holding part 43, and the relative movement of the external electric wire We2 led out from the electric wire lead-out opening 40b with respect to the protector outer wall surface 1w cannot be restricted, since the side wall surface 42 on the tip end side and the electric wire lead-out opening 40b side with respect to the one electric wire holding part 43 is formed as a smooth wall surface without a projection, the impact of the side wall surface 42 with respect to the external electric wire We2 moving with respect to the side wall surface 42 can be alleviated. In the protector 1 of the present embodiment, the impact on the external electric wires We2 that have moved relatively to the intersections 46A to 46C can be alleviated by the respective intersections 46A to 46C on the tip end side and the wire drawing port 40b side of the single wire holding portion 43. As described above, in the protector 1 of the present embodiment, even when the external electric wire We2 moves relative to the protector outer wall surface 1w on the side of the wire drawing port 40b and on the side of the distal end portion of the single wire holding portion 43, the external electric wire We2 can be protected, and therefore, the durability of the external electric wire We2 can be improved.

The tip end wall surface 45 shown here is formed in a curved surface shape (fig. 4 and 5). Therefore, in the protector 1 of the present embodiment, even if the external electric wires We2 drawn out from the wire drawing ports 40b are routed along the front end wall surface 45, the impact of the front end wall surface 45 on the external electric wires We2 can be alleviated. Accordingly, even if the wiring path of the external electric wire We2 is used, the protector 1 of the present embodiment can protect the external electric wire We2, and thus can improve the durability of the external electric wire We 2.

In addition, the corner portion 47 where the side wall surface 42, the intersecting wall surface 44, and the front end wall surface 45 intersect is formed in the following curved surface shape (for example, a curved surface shape composed of 1 or more large radii of curvature): the external electric wire We2 trying to go up the intersection 46C of the intersection wall surface 44 and the front end wall surface 45 can be returned to the bottom wall surface 41 side by its own weight (fig. 4 and 5). Thus, in the protector 1 of the present embodiment, even if the external electric wire We2 tries to cross the intersection 46C due to relative movement with respect to the protector outer wall surface 1w, the external electric wire We2 can be prevented from returning to the original position in the interior of the external storage compartment 40 as it goes up the intersection 46C, and therefore, from this point of view, the external electric wire We2 can be protected, and the durability of the external electric wire We2 can be improved. Here, the intersection 46C is preferably formed in the following curved surface shape: even if the external electric wire We2 tries to go up due to relative movement with respect to the protector outer wall surface 1w, the external electric wire We2 can be guided to the corner 47 by its own weight. Thus, in the protector 1 of the present embodiment, even if the external electric wires We2 attempt to cross the cross portion 46C due to relative movement with respect to the protector outer wall surface 1w, the external electric wires We2 can be returned to the original position in the chamber of the external storage chamber 40 via the corner portions 47, and therefore, from this point of view, the external electric wires We2 can be protected, and the durability of the external electric wires We2 can be improved.

The protector outer wall surface 1w shown here is provided with a wire locking portion 50, and the wire locking portion 50 locks the relative movement of the external wire We2 drawn out from the wire drawing port 40b to the outside of the external storage compartment 40 toward the wire insertion port 40a (fig. 1 to 3). The wire locking portion 50 has a passage 50a such as a rectangular parallelepiped through hole, and an external wire We2 drawn from the wire drawing port 40b is inserted through the passage 50 a.

The wire locking portion 50 shown here has: a bottom wall surface 11a of the protector body 10; a rectangular sheet-like first wall 51 disposed to face the bottom wall surface 11a with a space therebetween; a second wall 52 erected from the bottom wall surface 11a toward the first wall 51; and a third wall 53 that is erected from the bottom wall surface 11a toward the first wall 51 and is disposed to face the second wall 52 with a space therebetween (fig. 8). The distance between the bottom wall surface 11a and the first wall body 51 may be equal to or larger than the outer diameter of the external electric wire We2 or larger than the outer diameter of the external electric wire We 2. In the wire locking portion 50, the first wall body 51 locks the external wire We2 in the passage 50a in the relative movement toward the wire insertion port 40a with respect to the protector outer wall surface 1 w.

In the wire locking portion 50, the first wall 51 and the second wall 52 are connected by a living hinge 54, and the first wall 51 can be opened and closed while being rotated about a rotation axis of the living hinge 54 with respect to the bottom wall 11a, the second wall 52, and the third wall 53 (fig. 8). In the wire locking portion 50, a passage 50a is formed when the first wall body 51 is in the closed state.

The wire locking portion 50 is provided with a lock mechanism 55 for holding the first wall 51 in a closed state. The lock mechanism 55 includes a first locking body 55a provided on the first wall 51 and a second locking body 55b provided on the third wall 53 (fig. 8). The lock mechanism 55 maintains the closed state of the first wall 51 by bringing the first locking body 55a and the second locking body 55b into a state in which they can be locked to each other when the first wall 51 is in the closed state. For example, one of the first locking body 55a and the second locking body 55b is provided with a claw portion, and the other is provided with a locking portion that hooks the claw portion when the first wall body 51 is in the closed state.

Here, in the protector 1, it is preferable that the external wire We2 is not moved relative to the protector outer wall surface 1w until the external wire We2 crosses the cross portion 46C. Therefore, it is preferable that the height of each side wall surface 42 in the direction of standing from the bottom wall surface 41 is formed to be as follows: between at least one of the wire holding portions 43 and the wire locking portion 50, when the relative movement of the external wire We2 with respect to the protector outer wall surface 1w reaches the maximum, the external wire We2 is not pulled out from the wire insertion port 40 a. Accordingly, the protector 1 of the present embodiment can restrict the outer wire We2 from crossing over the cross portion 46C, and therefore, from this point of view, the outer wire We2 can be protected, and the durability of the outer wire We2 can be improved.

As described above, the protector 1 of the present embodiment can improve the protection function for the external electric wire We 2. Further, in the protector 1, even if no other wire holding portion is provided between one wire holding portion 43 and the wire locking portion 50, the protection function of the external wire We2 can be improved, and therefore, the assembling workability of the external wire We2 can also be improved. Further, compared to the conventional art, in the protector 1, the protection function of the external electric wire We2 can be improved without providing a special shape in the mold for forming the protector body 10 and the cover 20, and therefore, the increase in cost can be suppressed. Since the wire harness WH of the present embodiment includes such a protector 1, the effects obtained by the protector 1 can be obtained similarly.

Claims

1. A protector is characterized by comprising:

a protector body formed with an internal housing chamber that houses and routes internal wires from a body opening; and

a cover that closes the body opening portion,

the protector outer wall surface formed by the outer wall surfaces of the protector body and the cover is provided with: an external housing chamber that houses and wires an external wire from a wire insertion opening, and that has a bottom wall surface that is disposed opposite the wire insertion opening with a gap therebetween and side wall surfaces that are disposed opposite the wire insertion opening with a gap therebetween and that are erected from the bottom wall surface toward the wire insertion opening; a cross wall surface of each of the side wall surfaces, the cross wall surface being connected to the side of the side wall surface on the wire insertion port side in a cross state; and a front end wall surface, and a rear end wall surface,

the protector outer wall surface is provided with 2 combinations of the side wall surface and the cross wall surface in a paired and crossed state,

the front end portion of the side wall surface and the intersecting wall surface of at least one of the 2 combinations is connected to the front end wall surface,

the external housing chamber has a wire draw-out port for drawing out the external wire wired in the external housing chamber along the wire insertion port, the bottom wall surface, and each of the side wall surfaces from the front end wall surface side to the outside,

the leading end portion of the wire lead-out side of each of the pair of side wall surfaces and the intersecting wall surface is connected to the leading end wall surface in an intersecting state,

the side wall surface is formed as a smooth wall surface without a protrusion, and

the intersection of the pair of side wall surfaces and the intersecting wall surface, the intersection of the side wall surface and the leading end wall surface, and the intersection of the intersecting wall surface and the leading end wall surface are each formed into a curved surface shape as follows: the scraping part generated along with the contact is not formed on the peripheral wall surface of the external wire.

2. The protector of claim 1,

the front end wall surface is formed in a curved surface shape.

3. A protector according to claim 1 or 2,

a corner portion where the side wall surface, the intersecting wall surface, and the front end wall surface intersect is formed in a curved surface shape as follows: the external wire that tries to go beyond the intersection of the intersection wall surface and the tip end wall surface can be returned to the bottom wall surface side by its own weight.

4. A protector according to claim 1 or 2,

the external housing chamber has an electric wire holding portion that holds the external electric wire in the external housing chamber,

a wire locking portion that locks relative movement of the external wire drawn out from the wire drawing port to the outside of the external housing chamber to the wire insertion port side is provided on the outer wall surface of the protector

The height of each of the side wall surfaces in the direction of standing from the bottom wall surface is formed to be as follows: at least between the wire holding portion and the wire locking portion, the external wire is not removed from the wire insertion opening when the relative movement of the external wire with respect to the protector outer wall surface is maximized.

5. A protector according to claim 3,

the protector outer wall surface is provided with a wire locking portion which locks relative movement of the external wire drawn out from the wire drawing port to the outside of the external housing chamber to the wire insertion port side, and which locks relative movement of the external wire to the wire insertion port side

6. A protector according to claim 1 or 2,

the front end wall surface, and the side wall surface and the intersecting wall surface connected to the front end wall surface are provided on the outer wall surface of the cover.

7. A protector according to claim 3,

8. The protector of claim 4,

9. The protector of claim 5,

10. A wire harness is characterized by comprising:

a wire group provided with at least an internal wire and an external wire; and

a protector that protects the inner electric wire and the outer electric wire,

the protector is provided with: a protector body having an internal housing chamber that houses the internal electric wires from a body opening and that routes the internal electric wires; and a cover closing the opening of the main body,

the protector outer wall surface formed by the outer wall surfaces of the protector body and the cover is provided with: an external housing chamber that houses and wires the external electric wire from an electric wire insertion opening, and that has a bottom wall surface that is disposed opposite the electric wire insertion opening with a gap therebetween and side wall surfaces that are disposed opposite the electric wire insertion opening with a gap therebetween and that are erected from the bottom wall surface toward the electric wire insertion opening; a cross wall surface of each of the side wall surfaces, the cross wall surface being connected to the wire insertion port side of the side wall surface in a cross state; and a front end wall surface, and a rear end wall surface,

the protector outer wall surface is provided with 2 combinations of the side wall surface and the intersecting wall surface in a paired and intersecting state,

the external housing chamber has a wire drawing-out port for drawing out the external wire wired in the external housing chamber along the wire insertion port, the bottom wall surface, and the side wall surfaces from the front end wall surface side to the outside,

the side wall surface is formed as a smooth wall surface without a protrusion,

the intersection of the pair of side wall surfaces and the intersecting wall surface, the intersection of the side wall surface and the leading end wall surface, and the intersection of the intersecting wall surface and the leading end wall surface are each formed into a curved surface shape as follows: the outer peripheral wall surface of the external wire is not provided with a scraping part generated along with contact.