Grommet with protector and wire harness

Abstract

To provide a grommet with a protector and a wiring harness, which can appropriately connect a grommet and a protector.SOLUTION: In a grommet 1 with a protector, a grommet connection part 12 is provided so as to have an interval along a peripheral direction R against a first penetration hole, and contains a first projection wall 12b projected from an external peripheral surface of the grommet connection part 12. A protector connection part 22 contains a plurality of band insertion parts 22a in which a binding band 30 is inserted into an inner side. In a such a construction, each of a grommet 10 and the protector 20 is inserted into the penetration hole to which the plurality of band insertion parts 22a is corresponded. By engaging a liner part 31 of the binding band 30 to a head part 32 inserted over the plurality of band insertion parts 22a, the head part 32 of the binding band 30 is held while being nipped by each band insertion part 22a and the first projection wall 12b inserted into the first penetration hole in a state where the grommet connection part 12 and the protector connection part 22 are bounded and connected.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a grommet with a protector and a wire harness. [Background technology]

[0002] Conventionally, as an example of a wire harness mounted on a vehicle, Patent Document 1 describes a wire harness including a connector shell provided in a connector housing and through which electric wires are inserted, a grommet connected to the connector shell, and a cable tie that is tied to a band attachment portion at the connection point between the grommet and the connector shell. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2016 / 153045 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the wire harness described in the above-mentioned Patent Document 1, for example, a protector that protects electric wires may be connected to a grommet, and the connection between the grommet and the protector may be tied and connected with a cable tie. In this case, it is desirable to maintain a proper connection state at the connection between the grommet and the protector.

[0005] Therefore, the present invention has been made in consideration of the above, and an object of the present invention is to provide a grommet with a protector and a wire harness that can properly connect the grommet and the protector. [Means for solving the problem]

[0006] In order to solve the above problems and achieve the object, the grommet with protector according to the present invention includes a grommet formed in an annular shape, which fits into an opening formed in an attachment target to waterproof the opening and through which a wiring material is inserted, a protector connected to the grommet and through which the wiring material extending from the grommet is inserted, a linear portion formed in a linear shape, and a head portion for engaging the linear portion, and the linear portion wound around the grommet and the protector is engaged by the head portion. and a cable tie for binding the grommet and the protector together, the grommet includes a grommet body portion that fits into the opening to seal water, and a grommet connection portion that is formed integrally with the grommet body portion and has an annular shape, the wiring material is inserted inside the grommet body portion and the grommet connection portion, the protector includes a protector body portion that is exteriorized by the wiring material, and a protector connection portion that is formed integrally with the protector body portion and has an annular shape, The wiring material is inserted from the inside across the protector main body and the protector connection portion, the grommet connection portion includes a plurality of through holes provided at intervals along the circumferential direction, and a first protruding wall provided at intervals along the circumferential direction with respect to a first through hole among the plurality of through holes and protruding from an outer circumferential surface of the grommet connection portion, the protector connection portions are provided at intervals along the circumferential direction, each protruding from the outer circumferential surface of the protector connection portion, and the cable tie is disposed on the inside. the grommet and the protector include a plurality of band insertion portions that are inserted into the corresponding through holes, and the linear portion of the cable tie is inserted across the plurality of band insertion portions and engaged with the head, thereby bundling and connecting the grommet connection portion and the protector connection portion, and the head of the cable tie is held by being sandwiched between the band insertion portion inserted into the first through hole and the first protruding wall.

[0007] The wire harness according to the present invention includes a conductive wiring material, a grommet formed in a ring shape and fitted into an opening formed in an attachment target to waterproof the opening, the wiring material being inserted into the inside of the grommet, a protector connected to the grommet and extending from the grommet and into which the wiring material is inserted, a linear portion formed in a linear shape, and a head portion for engaging the linear portion, and the linear portion is wound around the grommet and the protector and engaged with the head portion to connect the grommet and the protector to the front. and a cable tie for binding the protector, the grommet includes a grommet body portion that fits into the opening to seal water, and a grommet connection portion that is formed integrally with the grommet body portion and in an annular shape, the wiring material is inserted inside the grommet body portion and the grommet connection portion, the protector includes a protector body portion that is exteriorized by the wiring material, and a protector connection portion that is formed integrally with the protector body portion and in an annular shape, and the protector body portion and the protector connection portion, the routing material is inserted inside from the grommet connection portion, the grommet connection portion includes a plurality of through holes spaced apart along the circumferential direction, and a first protruding wall spaced apart along the circumferential direction with respect to a first through hole of the plurality of through holes and protruding from an outer peripheral surface of the grommet connection portion, the protector connection portion includes a plurality of band insertion portions spaced apart along the circumferential direction, each protruding from the outer peripheral surface of the protector connection portion, and through which the cable tie is inserted inside, the grommet and the protector are characterized in that the plurality of band insertion portions are inserted into the corresponding through holes, and the linear portion of the cable tie is inserted across the plurality of band insertion portions and engaged with the head, thereby bundling and connecting the grommet connection portion and the protector connection portion, and the head of the cable tie is sandwiched and held between the band insertion portion inserted into the first through hole and the first protruding wall. Effect of the Invention

[0008] The grommet with protector and wire harness of the present invention have a head of the cable tie that is held by being clamped between the band insertion portion and the first protruding wall, thereby preventing the head of the cable tie from moving circumferentially, and as a result, the grommet and protector can be properly connected. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a configuration example of a wire harness according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing a configuration example of a grommet with a protector before being tied with a tie band according to the embodiment. [Diagram 3] FIG. 3 is an exploded perspective view showing a configuration example of a grommet according to the embodiment. [Figure 4] FIG. 4 is a perspective view showing a configuration example of the protector according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The form (embodiment) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described in the following embodiment. Furthermore, the components described below include those that a person skilled in the art can easily imagine and those that are substantially the same. Furthermore, the configurations described below can be appropriately combined. Furthermore, various omissions, substitutions, or modifications of the configurations can be made without departing from the gist of the present invention. [Embodiment]

[0011] A grommet 1 with a protector and a wire harness WH according to an embodiment will be described with reference to the drawings. The grommet 1 with a protector is incorporated into a wire harness WH that is wired in a vehicle or the like. Here, the wire harness WH is configured such that, for example, a plurality of wiring materials W used for power supply and signal communication are connected to each device by a connector or the like in order to connect each device mounted on the vehicle. The wire harness WH includes a wiring material W having conductivity, a grommet 10 provided on the wiring material W and through which the wiring material W is inserted, a protector 20 that protects the wiring material W, and a cable tie 30 that ties together a connection part P between the grommet 10 and the protector 20. The wire harness WH may further include various components such as an exterior member such as a corrugated tube or a resin tape, an electric connection box, and a fixture. The wiring material W is, for example, constituted by an electric wire. An electric wire is a conductor (core) made of multiple conductive metal wires covered with an insulating coating. A wire harness WH bundles and aggregates multiple wiring materials W, and various devices are electrically connected via connectors or the like provided at the ends of the bundled wiring materials W.

[0012] The grommet 10 will be described. The grommet 10 is applied to an opening Ma formed in a connector box M to be attached when wiring a wiring material W from the inside to the outside of the connector box M through the opening Ma. Here, the connector box M is, for example, a device that aggregates and connects a plurality of connectors provided at the ends of the wiring material W of a wire harness WH to connectors of each device of a vehicle. The grommet 10 is inserted with the wiring material W of the wire harness WH and is fitted to the opening Ma in a state where it is sheathed around the wiring material W, thereby protecting the wiring material W passing through the opening Ma and waterproofing the opening Ma. The grommet 10 has functions such as dustproofing and soundproofing in addition to waterproofing the opening Ma. The configuration of the grommet 10 will be described in detail below with reference to each drawing.

[0013] In the following description, for convenience, the first direction is referred to as the "axial direction X", the second direction is referred to as the "width direction Y", and the third direction is referred to as the "height direction Z" among the first direction, the second direction, and the third direction which intersect with each other. The axial direction X, the width direction Y, and the height direction Z intersect with each other and are typically perpendicular to each other. Here, the axial direction X corresponds to the plate thickness direction of the mounting plate of the connector box M in which the opening Ma is provided, and corresponds to the insertion direction of the wiring material W and the grommet 10 with respect to the opening Ma. In other words, the axial direction X is a direction along the extension direction of the wiring material W inserted into the grommet 10. The width direction Y and the height direction Z correspond to the extension direction of the mounting plate of the connector box M in which the opening Ma is provided. In addition, the circumferential direction R is a direction along the axis of the annular member formed around the axis along the axial direction X. In other words, the circumferential direction R is a direction along the outer circumferential surface of the annular member. In this case, for the sake of convenience and ease of understanding, the wiring material W is described as being linearly wired along the axial direction X, but this is not limiting, and the wiring material W inserted into the grommet 10 may be partially bent or curved so as to deviate from the axial direction X when the grommet 10 is attached to the mounting plate of the connector box M. Furthermore, unless otherwise specified, each direction used in the following description will be described as a direction when the grommet 10 is assembled to the mounting plate of the connector box M and fixed to the vehicle.

[0014] As shown in FIG. 3 etc., grommet 10 of this embodiment includes a grommet main body 11, a grommet connecting portion 12, and a coupling portion 13, which are integrally formed as an elastic body.

[0015] The grommet body 11 is adapted to fit into an opening Ma of a mounting plate of the connector box M to provide a waterproofing, and includes a grommet inner 11a and a waterproofing portion 11b.

[0016] The grommet inner 11a is made of a hard synthetic resin material having insulating properties, is harder than the water stop part 11b, and is fitted to the water stop part 11b with the wiring material W inserted inside. The grommet inner 11a is formed in a substantially cylindrical shape penetrating along the axial direction X, and is formed in an elliptical shape whose length in the width direction Y is longer than its length in the height direction Z when viewed from the axial direction X. The grommet inner 11a includes a first insertion part 110a and a second insertion part 110b inside the grommet inner 11a. The first insertion part 110a and the second insertion part 110b are arranged side by side along the width direction Y, and the wiring material W is inserted into each of them. That is, the grommet inner 11a is configured such that the inner space is divided by the first insertion portion 110a and the second insertion portion 110b, and the wiring material W can be held in a state in which the wiring material W is inserted into each divided area. The first insertion portion 110a is formed in a cylindrical shape when viewed from the axial direction X, and is configured to include a first semi-cylindrical part formed in a semi-cylindrical shape and a second semi-cylindrical part formed in a semi-cylindrical shape, and the first semi-cylindrical part and the second semi-cylindrical part can be separated. The first insertion portion 110a arranges the wiring material W inside in a state in which the first semi-cylindrical part and the second semi-cylindrical part are separated, and the wiring material W is inserted inside by combining the separated first semi-cylindrical part and the second semi-cylindrical part. The second insertion portion 110b is configured similarly to the first insertion portion 110a. That is, the second insertion portion 110b is formed in a cylindrical shape when viewed from the axial direction X, and is configured to include a first semi-cylindrical part formed in a semi-cylindrical shape and a second semi-cylindrical part formed in a semi-cylindrical shape, and the first semi-cylindrical part and the second semi-cylindrical part can be separated. The second insertion portion 110b arranges the wiring material W inside when the first semi-cylindrical part and the second semi-cylindrical part are separated, and inserts the wiring material W inside by combining the separated first semi-cylindrical part and the second semi-cylindrical part. The grommet inner 11a configured in this manner is attached to the inside of the water stop part 11b in a state in which the wiring material W is inserted and held. As a result, the grommet main body 11 can properly hold the wiring material W via the grommet inner 11a.

[0017] The water stop portion 11b is formed as an elastic body and is formed to have relatively high flexibility compared to the grommet inner 11a. In this example, the water stop portion 11b is formed integrally with the grommet connection portion 12 and the connection portion 13 described later by a soft material, for example, synthetic rubber. The water stop portion 11b is formed in a substantially cylindrical shape penetrating along the axial direction X, and is formed in an elliptical shape whose length in the width direction Y is longer than its length in the height direction Z when viewed from the axial direction X. The water stop portion 11b accommodates the grommet inner 11a in its internal space G. The water stop portion 11b stops water from entering the opening Ma of the connector box M, and includes a flat portion 111b and a groove portion 112b. The flat portion 111b is formed on one side in the height direction Z on the outer circumferential surface of the water stop portion 11b, and is formed linearly along the width direction Y. The groove portion 112b is formed in a groove shape and is formed on the outer peripheral surface of the water stop portion 11b along the circumferential direction R, with one end connected to one side of the flat portion 111b and the other end connected to the other side of the flat portion 111b. That is, the flat portion 111b and the groove portion 112b are formed in an annular shape on the outer peripheral surface of the water stop portion 11b along the circumferential direction R. The flat portion 111b and the groove portion 112b come into contact with the opening Ma of the connector box M to waterproof the opening Ma.

[0018] The grommet connection part 12 is connected to the protector 20, and is formed as an elastic body, and is formed to have relatively high flexibility compared to the grommet inner 11a, and is formed of a soft material, such as synthetic rubber, as described above. The grommet connection part 12 is provided on one side of the grommet main body part 11, for example, on the opposite side of the grommet main body part 11 in the axial direction X, and in this example, is provided on the opposite side of the grommet main body part 11 via the connecting part 13. The grommet connection part 12 is formed integrally with the grommet main body part 11 and has an annular shape, and is formed, for example, in a substantially cylindrical shape penetrating along the axial direction X, and is formed in an elliptical shape whose length in the width direction Y is longer than its length in the height direction Z when viewed from the axial direction X. The grommet connection part 12 has an outer circumferential surface 12d formed of a pair of flat parts 120d facing each other along the height direction Z and formed in a flat shape, and a pair of curved parts 121d facing each other along the width direction Y and formed in a curved shape. The grommet connection portion 12 includes a plurality of through holes 12a, a pair of first protruding walls 12b, and a pair of second protruding walls 12c.

[0019] The through holes 12a are holes that penetrate the main body of the grommet connection part 12, and each has the same shape, and is formed in a shape that allows the band insertion part 22a described later to be inserted therethrough. That is, the through holes 12a are formed in a shape equivalent to the outer shape of the band insertion part 22a when viewed from the height direction Z or the width direction Y. This allows the through holes 12a to suppress rattling of the inserted band insertion part 22a. The through holes 12a are provided at intervals along the circumferential direction R of the grommet connection part 12. In this example, four through holes 12a are formed, one each in the pair of flat parts 120d of the grommet connection part 12, and one each in the pair of curved parts 121d. The through holes 12a formed in a pair of flat portions 120d are formed approximately in the center of the flat portion 120d in the width direction Y and face each other along the height direction Z, and the through holes 12a formed in a pair of curved portions 121d face each other along the width direction Y.

[0020] The pair of first protruding walls 12b are formed in a plate shape protruding from the outer peripheral surface 12d of the grommet connection portion 12. The pair of first protruding walls 12b are provided at intervals along the circumferential direction R with respect to the first through hole 120a, which is one of the through holes 12a among the plurality of through holes 12a. In this example, the pair of first protruding walls 12b are provided adjacent to the first through hole 120a formed in one curved surface portion 121d at intervals along the circumferential direction R and protrude from the outer peripheral surface 12d along the width direction Y. The pair of first protruding walls 12b are formed in a plate shape perpendicular to the height direction Z. The interval between the first through hole 120a and the pair of first protruding walls 12b is equal to the length of the head portion 32 of the cable tie 30 described later (the length for holding the head portion 32 by sandwiching it). The pair of first protruding walls 12b are provided facing each other along the axial direction X, and one first protruding wall 12b and the other first protruding wall 12b are provided with a gap therebetween. This gap is a gap for holding the head 32 of the cable tie 30 and for allowing the linear portion 31 of the cable tie 30 to pass between the one first protruding wall 12b and the other first protruding wall 12b.

[0021] The pair of second protruding walls 12c are formed in a plate shape protruding from the outer peripheral surface 12d of the grommet connection part 12. The pair of second protruding walls 12c are provided between the first through hole 120a and the pair of first protruding walls 12b, protruding from the outer peripheral surface 12d of the grommet connection part 12, and facing each other along the axial direction X of the grommet connection part 12. In this example, the pair of second protruding walls 12c are provided between the first through hole 120a formed in one curved surface part 121d and the pair of first protruding walls 12b, and protruding from the outer peripheral surface 12d of the grommet connection part 12 along the width direction Y. The pair of second protruding walls 12c are formed in a plate shape perpendicular to the axial direction X, and are connected to the pair of first protruding walls 12b. For example, one second protruding wall 12c is connected to one first protruding wall 12b, and the other second protruding wall 12c is connected to the other first protruding wall 12b. The pair of second protruding walls 12c and the pair of first protruding walls 12b, which are connected to each other, are each formed in an L-shape when viewed from the width direction Y. This enables the grommet connection portion 12 to have higher strength of the pair of first protruding walls 12b and the pair of second protruding walls 12c, compared to a case in which the pair of first protruding walls 12b and the pair of second protruding walls 12c are separated.

[0022] The connecting portion 13 connects the grommet body 11 and the grommet connection portion 12, and is formed as an elastic body, and is formed to have relatively high flexibility compared to the grommet inner 11a, and is formed of a soft material, such as synthetic rubber, as described above. The connecting portion 13 is formed in a ring shape, for example, in a substantially cylindrical shape penetrating along the axial direction X, and is formed in an elliptical shape whose length in the width direction Y is longer than its length in the height direction Z when viewed from the axial direction X. The connecting portion 13 connects the grommet body 11 and the grommet connection portion 12, and the wiring material W is inserted inside. In the grommet 10 configured as described above, the wiring material W is inserted inside through the connecting portion 13 across the grommet body 11 and the grommet connection portion 12.

[0023] Next, the protector 20 will be described. The protector 20 protects the wiring material W and regulates the wiring path of the wiring material W. As shown in Fig. 4 etc., the protector 20 includes a protector main body 21 and a protector connection part 22, which are formed of a hard synthetic resin material having insulating properties.

[0024] The protector main body 21 is fitted to the wiring material W, and the wiring material W extending from the protector connection portion 22 is inserted inside the protector main body 21 to protect the inserted wiring material W and regulate the wiring path. The protector main body 21 is formed in a box shape and has a fixing portion 21a. The fixing portion 21a fixes the protector 20 to a vehicle panel provided on the vehicle, and has protruding pieces protruding on both sides along the width direction Y, and a hole portion is formed in the protruding piece. The fixing portion 21a fixes the protector 20 to the vehicle panel by inserting a bolt into the hole portion and screwing it together with the vehicle panel. The protector main body 21 formed in a box shape sends out the wiring material W inserted from the protector connection portion 22 from a sending portion (opening) on ​​the opposite side to the protector connection portion 22.

[0025] The protector connection part 22 is connected to the grommet connection part 12 of the grommet 10. The protector connection part 22 is provided on one side of the protector body part 21, for example, on the opposite side of the delivery part of the protector body part 21 in the axial direction X. The protector connection part 22 is formed integrally with the protector body part 21 in an annular shape, for example, formed in a substantially cylindrical shape penetrating along the axial direction X, and formed in an elliptical shape whose length in the width direction Y is longer than its length in the height direction Z when viewed from the axial direction X. The outer peripheral surface 22b of the protector connection part 22 is formed from a pair of flat parts 220b formed in a flat shape facing each other along the height direction Z and a pair of curved parts 221b formed in a curved shape facing each other along the width direction Y. The protector connection part 22 includes a plurality of band insertion parts 22a.

[0026] The band insertion parts 22a are U-shaped (arch-shaped, gate-shaped) through which the cable tie 30 is inserted. The band insertion parts 22a are spaced apart from one another along the circumferential direction R, and each protrudes from the outer circumferential surface 22b of the protector connection part 22. In this example, four band insertion parts 22a are formed, one on each of the pair of flat surface parts 220b of the protector connection part 22, and one on each of the pair of curved surface parts 221b. The band insertion parts 22a formed on the pair of flat surface parts 220b are formed in the approximate center of the flat surface part 220b in the width direction Y and face each other along the height direction Z, and the band insertion parts 22a formed on the pair of curved surface parts 221b face each other along the width direction Y. The cable ties 30 are inserted into the band insertion parts 22a while the band insertion parts 22a are inserted into the corresponding through holes 12a. The protector 20 configured as described above has the wiring material W inserted inside the protector connecting part 22 and the protector main body 21. In this example, the protector 20 is configured by combining the tray 20b and the cover 20a that covers the upper part of the tray 20b, but is not limited to this and may have other configurations.

[0027] Next, a description will be given of the cable tie 30. The cable tie 30 is for binding the connection portion P between the grommet 10 and the protector 20. The cable tie 30 includes a linear portion 31 and a head portion 32, as shown in FIG.

[0028] The linear portion 31 is formed linearly and has a plurality of grooves formed along the extending direction. The head 32 is provided at one end of the linear portion 31 and includes an insertion opening through which the linear portion 31 is inserted from the other end of the linear portion 31 and a claw portion that engages with the groove of the linear portion 31 inserted from the insertion opening. The cable tie 30 has the linear portion 31 inserted across the plurality of band insertion portions 22a and wound around the grommet connection portion 12 and the protector connection portion 22, and the claw portion of the head 32 engages the groove of the linear portion 31 with the claw portion, thereby binding the grommet connection portion 12 and the protector connection portion 22.

[0029] Next, a method of assembling the grommet 10 and the protector 20 to form the wire harness 100 will be described. An operator inserts the wiring material W into the inside of the grommet inner 11a, and attaches the grommet inner 11a with the wiring material W inserted thereinto to the inside of the watertight portion 11b. Then, the operator connects the protector connection portion 22 and the grommet connection portion 12 with the wiring material W inserted into the inside of the protector 20. At this time, the operator inserts the multiple band insertion portions 22a of the protector connection portion 22 into the multiple through holes 12a of the grommet connection portion 12, respectively. Then, with the head 32 of the cable tie 30 sandwiched and held between the first protruding wall 12b and the band insertion portion 22a, and with the head 32 of the cable tie 30 sandwiched and held between a pair of second protruding walls 12c, the worker inserts the linear portion 31 of the cable tie 30 into each of the multiple band insertion portions 22a, engages the inserted linear portion 31 with the head 32, and bonds the grommet connection portion 12 and the protector connection portion 22 together to form the wire harness 100.

[0030] As described above, the grommet 1 with protector according to the embodiment includes the grommet 10, the protector 20, and the cable tie 30. The grommet 10 is formed in a ring shape and fits into an opening Ma formed in the connector box M to waterproof the opening Ma, and the wiring material W is inserted inside. The protector 20 is connected to the grommet 10, and the wiring material W extending from the grommet 10 is inserted inside. The cable tie 30 includes a linear portion 31 formed in a linear shape and a head portion 32 that engages the linear portion 31, and the head portion 32 engages the linear portion 31 wound around the grommet 10 and the protector 20 to bind the grommet 10 and the protector 20. Here, the grommet 10 includes a grommet body 11 that fits into the opening Ma to make it waterproof, and a grommet connection part 12 that is integrally formed in an annular shape with the grommet body 11, and a wiring material W is inserted inside the grommet body 11 and the grommet connection part 12. The protector 20 includes a protector body 21 that is sheathed by the wiring material W, and a protector connection part 22 that is integrally formed in an annular shape with the protector body 21, and a wiring material W is inserted inside the protector body 21 and the protector connection part 22. The grommet connection part 12 includes a plurality of through holes 12a that are provided at intervals along the circumferential direction R, and a first protruding wall 12b that is provided adjacent to a first through hole 120a of the plurality of through holes 12a at an interval along the circumferential direction R and protrudes from an outer circumferential surface 12d of the grommet connection part 12. The protector connection portion 22 includes a plurality of band insertion portions 22a that are provided at intervals along the circumferential direction R, each protruding from an outer circumferential surface 22b of the protector connection portion 22, and through which the cable tie 30 is inserted. In this configuration, the grommet 10 and the protector 20 have the plurality of band insertion portions 22a inserted into the corresponding through holes 12a, and the linear portion 31 of the cable tie 30 is inserted across the plurality of band insertion portions 22a and engaged with the head portion 32, thereby binding and connecting the grommet connection portion 12 and the protector connection portion 22, and the head portion 32 of the cable tie 30 is sandwiched and held between the band insertion portion 22a inserted into the first through hole 120a and the first protruding wall 12b.

[0031] With this configuration, the protector-equipped grommet 1 can firmly connect the protector 20 and the grommet 10 by inserting the multiple band insertion parts 22a into the multiple through holes 12a. In addition, the protector-equipped grommet 1 can suppress the movement of the head 32 of the cable tie 30 along the circumferential direction R by sandwiching and holding the head 32 of the cable tie 30 between the band insertion parts 22a and the first protruding wall 12b. As a result, the protector-equipped grommet 1 can suppress the movement of the head 32 of the cable tie 30 and contact with surrounding components, and can suppress friction between the cable tie 30 and the grommet connection part 12 due to the movement of the cable tie 30, thereby suppressing a decrease in durability. In addition, the protector-equipped grommet 1 can improve the durability of the grommet 10 by providing the first protruding wall 12b on the grommet 10, compared to a case in which the first protruding wall 12b is provided on the protector 20. This is because, if the first protruding wall 12b is provided on the protector 20, a through hole for inserting the first protruding wall 12b of the protector 20 must be provided on the grommet 10 separately, and in this case, the durability of the grommet 10 may decrease due to an increase in the number of through holes in the grommet 10. The grommet 1 with protector can improve workability by providing the first protruding wall 12b on the grommet 10, compared to a case in which the first protruding wall 12b is provided on the protector 20. This is because, if the first protruding wall 12b is provided on the protector 20, the first protruding wall 12b of the protector 20 must be inserted into the through hole of the grommet 10, and in this case, the number of work steps increases, and therefore the workability may decrease. The grommet 1 with protector has the cable tie 30 inserted through the multiple band insertion portions 22a, so the work of fixing the position of the cable tie 30 with tape can be omitted. As described above, the protector-equipped grommet 1 can properly connect the grommet 10 and the protector 20.

[0032] In the above-described grommet with protector 1, the grommet connection portion 12 is provided between the first through hole 120a and the first protruding wall 12b, protrudes from the outer circumferential surface 12d of the grommet connection portion 12, and includes a pair of second protruding walls 12c opposed to each other along the axial direction X of the grommet connection portion 12. In the grommet 10 and the protector 20, the multiple band insertion portions 22a are inserted into the corresponding through holes 12a, and the linear portion 31 of the cable tie 30 is inserted across the multiple band insertion portions 22a and engaged with the head portion 32, thereby binding the grommet connection portion 12 and the protector connection portion 22 together, and the head portion 32 of the cable tie 30 is sandwiched and held by the pair of second protruding walls 12c. With this configuration, the grommet 1 with protector can hold the head 32 of the cable tie 30 with a pair of second protruding walls 12c, so that when the cable tie 30 is tied to the grommet connection portion 12 and the protector connection portion 22, the head 32 of the cable tie 30 can be prevented from shifting along the axial direction X, improving the workability of the tie-tying operation.

[0033] The wire harness WH includes a conductive wiring material W and the grommet 1 with a protector, and has the same effects as the grommet 1 with a protector described above.

[0034] In the above description, the grommet 10 is applied to the opening Ma of the connector box M when wiring the wiring material W from the inside to the outside of the connector box M, but is not limited thereto. For example, the grommet 10 may be applied to an opening formed in a mounting panel that is a metal plate constituting the body of a vehicle.

[0035] Although an example has been described in which the grommet connection portion 12 is configured to include the pair of second protruding walls 12c, the present invention is not limited to this, and the grommet connection portion 12 does not necessarily have to include the pair of second protruding walls 12c.

[0036] The first through hole 120a, in which a pair of first protruding walls 12b and a pair of second protruding walls 12c are spaced apart, has been described as being formed in one of the curved portions 121d, but is not limited to this and may be formed, for example, in either one of the pair of flat portions 12d.

[0037] In the above description, the shapes of the grommet 10 and the protector 20 are merely examples, and the shapes are not limited to those described above. [Explanation of symbols]

[0038] 1 Grommet with protector 10 Grommet 11 Grommet body 12 Grommet connection 12a Multiple through holes 12d Outer surface 120a First through hole 12b 1st protruding wall 12c Pair of second protruding walls 20 Protector 21 Protector body 22 Protector connection 22a Multiple band insertion parts 22b Outer surface 30 Cable Ties 31 Linear section 32 Head M Connector box (for mounting) Ma opening R circumferential direction W Routing material WH Wire harness

Claims

1. A grommet formed in an annular shape, fitted into an opening formed in the attachment target to waterproof the opening, and through which a wiring material is inserted; A protector connected to the grommet and into which the wiring material extending from the grommet is inserted; a cable tie including a linear portion formed in a linear shape and a head portion for engaging the linear portion, the cable tie engaging the linear portion wound around the grommet and the protector with the head portion to bind the grommet and the protector, The grommet is A grommet body portion that fits into the opening to seal against water; a grommet connection portion formed integrally with the grommet body portion and having an annular shape, the wiring material being inserted through the grommet body portion and the grommet connection portion, The protector comprises: A protector main body that is sheathed on the wiring material; a protector connection portion formed integrally with the protector body portion and having an annular shape, the wiring material being inserted through the protector body portion and the protector connection portion, The grommet connection portion is A plurality of through holes spaced apart along a circumferential direction; a first protruding wall that is spaced apart from the first through hole along the circumferential direction and protrudes from an outer circumferential surface of the grommet connection portion with respect to the first through hole among the plurality of through holes, The protector connection portion is a plurality of band insertion portions provided at intervals along the circumferential direction, each protruding from an outer circumferential surface of the protector connection portion, and into which the cable tie is inserted; The grommet and the protector are characterized in that the multiple band insertion portions are inserted into the corresponding through holes, and the linear portion of the cable tie is inserted across the multiple band insertion portions and engaged with the head, thereby bundling and connecting the grommet connection portion and the protector connection portion, and the head of the cable tie is held by being sandwiched between the band insertion portion inserted into the first through hole and the first protruding wall.

2. the grommet connection portion includes a pair of second protruding walls that are provided between the first through hole and the first protruding wall, protrude from an outer circumferential surface of the grommet connection portion, and face each other along an axial direction of the grommet connection portion, The grommet with protector as described in claim 1, wherein the grommet and the protector are in a state in which the multiple band insertion portions are inserted into the corresponding through holes, and the linear portion of the cable tie is inserted across the multiple band insertion portions and engaged with the head, thereby binding and connecting the grommet connection portion and the protector connection portion, and the head of the cable tie is held by being sandwiched between the pair of second protruding walls.

3. A conductive wiring material; A grommet formed in a ring shape, fitted into an opening formed in the attachment target to waterproof the opening, and into which the wiring material is inserted; A protector connected to the grommet and into which the wiring material extending from the grommet is inserted; a cable tie including a linear portion formed in a linear shape and a head portion for engaging the linear portion, the cable tie engaging the linear portion wound around the grommet and the protector with the head portion to bind the grommet and the protector, The grommet is A grommet body portion that fits into the opening to seal against water; a grommet connection portion formed integrally with the grommet body portion and having an annular shape, the wiring material being inserted through the grommet body portion and the grommet connection portion, The protector comprises: A protector main body that is sheathed on the wiring material; a protector connection portion formed integrally with the protector body portion and having an annular shape, the wiring material being inserted through the protector body portion and the protector connection portion, The grommet connection portion is A plurality of through holes spaced apart along a circumferential direction; a first protruding wall that is spaced apart from the first through hole along the circumferential direction and protrudes from an outer circumferential surface of the grommet connection portion with respect to the first through hole among the plurality of through holes, The protector connection portion is a plurality of band insertion portions provided at intervals along the circumferential direction, each protruding from an outer circumferential surface of the protector connection portion, and into which the cable tie is inserted; The grommet and the protector are in a state in which the multiple band insertion portions are inserted into the corresponding through holes, and the linear portion of the cable tie is inserted across the multiple band insertion portions and engaged with the head, thereby bundling and connecting the grommet connection portion and the protector connection portion, and the head of the cable tie is held by being sandwiched between the band insertion portion inserted into the first through hole and the first protruding wall.

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