Connector

Abstract

The invention discloses a connector which can improve the holding force of an electric wire and stably maintain the external force blocking performance. A connector (10) is provided with: a connector housing (16); an electric wire (12) protruding to the outside of the connector housing (16); an electric wire holding section (22) integrally having a main body section (92) that holds the protruding portion (20) of the electric wire (12), and a metal bolt insertion cylinder section (94) that extends through the main body section (92); a metal shield shell (24) covering the connector housing (16); and a metal pressing part (26) that sandwiches the wire holding part (22) between the pressing part (26) and the shield shell (24) in the first direction and is bolted to the shield shell (24) by a bolt (184) inserted through a bolt insertion cylinder part (94), the bolt insertion cylinder part (94) having a protruding end part (120) protruding from the main body part (92) and abutting against the shield shell (24) or the pressing part (26) by the protruding end part (120). Therefore, the main body part (92) is separated from the shielding shell (24) or the pressing part (26) by a gap (178, 180).

Description

Technical Field

[0001] The present invention relates to a connector. Background Art

[0002] In the past, connectors were used to electrically connect vehicle-mounted devices. Such connectors include a connector housing, terminals housed in the connector housing, and wires connected to the terminals, and the wires are led out from a wire lead-out port of the connector housing to the outside. Since external forces such as vibration when mounted on the vehicle are applied to the wires led out to the outside, when the external force applied to the wires is transmitted to the terminal side, stress is applied to the contacts between the terminal and the other terminal, which may cause problems such as contact wear. Therefore, in the connector, a so-called external force isolation performance is required to suppress the transmission of the external force applied to the wires to the terminal side. For this reason, the connector disclosed in Patent Document 1 has a resin rear retaining body assembled in the connector housing in a state of retaining the wires. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2011-54393 Summary of the invention Problems to be solved by the invention

[0004] However, in Patent Document 1, a locking claw-shaped stopper is provided at the top end of an elastic protruding piece provided on the connector housing, and the stopper is elastically deformed while passing over the stopper provided on the rear retainer and elastically restored to engage with the stopper, thereby assembling the rear retainer. Therefore, a gap is inevitably generated between the stopper and the stopper, and due to the shaking caused by the gap, the external force transmitted to the wire may be transmitted to the terminal side. In addition, since the stopper, the stopper, and the rear retainer that retains the wire are all made of resin, a further gap is generated due to the creep phenomenon of the resin in a high temperature environment, and the external force isolation performance of the connector may be further deteriorated.

[0005] Here, the present invention discloses a connector capable of improving the holding force of electric wires and stably maintaining external force isolation performance. Solutions to Solve Problems

[0006] The connector of the present invention comprises: a connector housing having a wire lead-out port; a wire connected to a terminal housed in the connector housing and led out from the wire lead-out port to the outside of the connector housing; a wire holding portion integrally comprising a main body portion made of synthetic resin and a bolt insertion cylinder portion made of metal, the main body portion holding a protruding portion of the wire protruding from the wire lead-out port to the outside, the bolt insertion cylinder portion extending through the main body portion in a first direction intersecting the axial direction of the wire; a metal shield shell fixed to the connector housing and covering the connector housing; and a metal pressing portion, which clamps the wire holding portion between the shield shell in the first direction and is bolt-fastened to the shield shell by a bolt inserted through the bolt insertion cylinder portion, the bolt insertion cylinder portion having a protruding end portion protruding from the main body portion on at least one side of the first direction, the protruding end portion abutting against the shield shell or the pressing portion, so that the main body portion is separated from the shield shell or the pressing portion by a gap. Effects of the Invention

[0007] According to the connector of the present invention, the holding force of the electric wire can be improved and the external force isolation performance can be stably maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a perspective view showing the connector according to the first embodiment. Figure 2 yes Figure 1 A bottom view of the connector is shown. Figure 3 Yes Figure 2 A longitudinal sectional view showing an enlarged main portion of the III-III cross section. Figure 4 Yes Figure 2 A longitudinal sectional view showing an enlarged view of a main part of the IV-IV section. Figure 5 Yes Figure 2 A longitudinal sectional view showing an enlarged view of section VV in FIG. Figure 6 yes Figure 1 An exploded perspective view of the connector is shown. Figure 7 It is shown from the bottom side Figure 1 An exploded perspective view of the connector is shown. Figure 8 The structure is shown in the state where the bolt is inserted through the cylinder. Figure 1 A perspective view of the first holding portion of the connector shown. Fig. 9 The bottom side is shown with the bolt inserted through the barrel. Figure 8 A three-dimensional view of the first holding portion shown. Fig.10 It shows the composition Figure 1 A perspective view of the shielding shell of the connector is shown. Fig.11 is a longitudinal sectional view showing a connector according to another embodiment. Figure 5 The corresponding figure. DETAILED DESCRIPTION

[0009] <Description of Embodiments of the Invention> First, embodiments of the present invention will be described by way of examples. The connector of the present invention comprises: a connector housing having a wire lead-out port; a wire connected to a terminal housed in the connector housing and led out from the wire lead-out port to the outside of the connector housing; a wire holding portion integrally comprising a main body portion made of synthetic resin and a bolt insertion cylinder portion made of metal, the main body portion holding a protruding portion of the wire protruding from the wire lead-out port to the outside, the bolt insertion cylinder portion extending through the main body portion in a first direction intersecting the axial direction of the wire; a metal shield shell fixed to the connector housing and covering the connector housing; and a metal pressing portion, which clamps the wire holding portion between the shield shell in the first direction and is bolt-fastened to the shield shell by a bolt inserted through the bolt insertion cylinder portion, the bolt insertion cylinder portion having a protruding end portion protruding from the main body portion on at least one side of the first direction, the protruding end portion abutting against the shield shell or the pressing portion, so that the main body portion is separated from the shield shell or the pressing portion by a gap.

[0010] According to this structure, the main body of the wire holding part made of synthetic resin holds the protruding part of the wire protruding to the outside from the wire lead-out port of the connector housing. The wire holding part has a metal bolt insertion barrel integrally, and the bolt insertion barrel extends through the main body in the first direction, which is a direction intersecting the axial direction of the wire. Further, the connector has a metal shielding shell fixed to the connector housing and covering the connector housing, and a pressing part arranged opposite to the shielding shell in the first direction, and the pressing part is bolted to the shielding shell by the bolt inserted through the bolt insertion barrel of the wire holding part in the state where the wire holding part is clamped between the shielding shell and the pressing part. Here, the bolt insertion barrel of the wire holding part has a protruding end protruding from the main body on at least one side in the first direction, and the protruding end abuts against the shielding shell or the pressing part. Thus, in the state where the protruding end of the metal bolt insertion barrel at least directly abuts against the shielding shell or the pressing part, the wire holding part in the main body that holds the wire can be stably clamped between the shielding shell and the pressing part by the axial force of the bolt. As a result, compared with the conventional structure in which shaking caused by the gap in the coupling structure of the rear retaining body holding the wires cannot be avoided, the wire retaining portion holding the wires can be reliably clamped between the shielding shell and the pressing portion at the bolt insertion tube, thereby improving the holding force of the wires.

[0011] Furthermore, a gap is formed between the main body of the wire holding part and the opposing surface of the shield shell or the pressing part on the side where the protruding end of the bolt insertion barrel protrudes from the main body, so that the expansion of the synthetic resin main body under high temperature environment can be absorbed by the gap. As a result, the following undesirable situation can be prevented in advance: the resin of the wire holding part expands and is embedded in the coating layer of the wire at high temperature, and the coating layer cannot return from the pressed shape due to creep phenomenon, and a gap is generated between the coating layer and the wire holding part, thereby deteriorating the external force isolation performance. As a result, the deterioration of the holding force of the wire due to the high temperature use environment can be suppressed or prevented, and the external force isolation performance of the connector can be stably maintained.

[0012] Preferably, the bolt insertion tube has a pair of protruding ends protruding from the main body on both sides of the first direction, and the pair of protruding ends abut against the shielding shell and the pressing portion, so that the main body is separated from the shielding shell and the pressing portion by the gap.

[0013] The bolt insertion barrel of the wire holding portion has a pair of protruding ends protruding from the main body on both sides of the first direction, and the pair of protruding ends are respectively in contact with the shielding shell and the pressing portion. Therefore, the wire holding portion for holding the wire in the main body can be stably clamped between the shielding shell and the pressing portion by the axial force of the bolt while the protruding ends of the metal bolt insertion barrel are directly in contact with the shielding shell or the pressing portion. As a result, the wire holding portion for holding the wire can be further reliably clamped between the shielding shell and the pressing portion by the bolt insertion barrel, and the holding force of the wire can be further improved.

[0014] Moreover, the main body of the wire retaining part is separated from the opposing surfaces of the shielding shell and the pressing part by a gap, so it can further absorb the expansion of the main body made of synthetic resin in a high temperature environment, and can further reduce the pressing force of the wire coating and reduce the risk of creep of the coating.

[0015] Preferably, the protruding end of the bolt insertion tube protrudes from the main body in the first direction by a protruding dimension of 0.5 mm or more. By setting the protruding dimension of the protruding end in the first direction from the main body to 0.5 mm or more, it is beneficial to absorb the resin expansion of the main body at high temperature, and it is beneficial to reduce the pressure applied to the coating layer of the wire and the risk of creep. In addition, it is more preferably 0.6 mm or more, but in order to avoid enlargement, there is no need for excessive clearance.

[0016] Preferably, the main body of the wire holding portion includes a first holding portion and a second holding portion, and the first holding portion and the second holding portion constitute the main body by clamping and holding the wire from both sides of the first direction and assembling each other, and a first recess is provided in an opening of a contact surface of the first holding portion that contacts the second holding portion, and the first recess accommodates the wire and contacts the outer peripheral surface of the wire, and a second recess is provided in an opening of a contact surface of the second holding portion that contacts the first holding portion, and the second recess accommodates the wire and contacts the outer peripheral surface of the wire, and when the first holding portion and the second holding portion are assembled, the first recess The first retaining portion is connected to the second recess to form a wire through hole, the first retaining portion has a first bolt insertion cylinder, the first bolt insertion cylinder has a pair of protruding ends that penetrate the first retaining portion in the first direction and protrude on both sides of the first direction, the second retaining portion has a second bolt insertion cylinder, the second bolt insertion cylinder has a pair of protruding ends that penetrate the second retaining portion in the first direction and protrude on both sides of the first direction, the pressing portion, the first bolt insertion cylinder, the second bolt insertion cylinder and the shielding shell are overlapped in sequence in the first direction and are bolted together using the bolts.

[0017] The main body of the wire holding portion is divided into a first holding portion and a second holding portion assembled from both sides in the first direction. The first holding portion and the second holding portion are assembled in such a manner that the wire is sandwiched in the middle, and the first recess of the first holding portion and the second recess of the second holding portion are connected to form a wire insertion hole. Therefore, the wire holding portion can be easily installed on the wire led out of the connector housing to the outside. Moreover, the divided first holding portion and the second holding portion respectively have a first bolt insertion barrel portion and a second bolt insertion barrel portion protruding through the first direction, and the pressing portion, the first bolt insertion barrel portion, the second bolt insertion barrel portion and the shielding shell are overlapped in sequence in the first direction and are bolted together with bolts. Therefore, the firm holding property of the wire holding portion can be ensured, and the improvement of the assembly property of the wire holding portion to the wire can be achieved.

[0018] Preferably, the gap between the main body and the shielding shell or the pressing portion in the first direction is determined by the following formula 1: Formula 1: Gap > (a×(t1-t2)×c)+(b×(t1-t2)×d) In Formula 1, a is the plate thickness of the first holding part or the second holding part in the first direction, b is the plate thickness of the pressing part or the shielding shell at the part in contact with the first holding part or the second holding part in the first direction, c is the linear expansion coefficient of the material of the first holding part or the second holding part, d is the linear expansion coefficient of the material of the pressing part or the shielding shell, t1 is the heat resistance temperature of the coating layer of the wire, and t2 is normal temperature (within the range of 5°C to 35°C).

[0019] By setting the gap between the main body and the shielding shell, or between the main body and the opposing surface of the pressing portion in the first direction to satisfy Formula 1, it is possible to absorb the resin expansion of the main body at high temperature, and it is possible to reduce the pressing force applied to the coating layer of the wire and the risk of creep. In addition, in order to avoid enlargement, an excessive gap is not required.

[0020] Preferably, the first recess of the first holding part and the second recess of the second holding part extend further in the protruding direction of the electric wire from the electric wire outlet over the first bolt insertion barrel and the second bolt insertion barrel, respectively, and an elastic locking piece and a locking claw part connecting the first holding part and the second holding part are respectively provided on one side and the other side of the first holding part and the second holding part on the extending end side of the first recess and the second recess. At a portion where the electric wire holding part is separated from the first and second bolt insertion barrels fastened by bolts between the shielding shell and the pressing part in the protruding direction of the electric wire, the first holding part and the second holding part are connected to each other by the locking engagement of the elastic locking piece and the locking claw part. Thereby, it is further helpful to suppress the transmission of external force to the electric wire. Furthermore, in the state before the bolt is tightened, the first holding part and the second holding part can be temporarily held in a state where the electric wire is sandwiched between them, and the assembly workability of the connector can also be improved.

[0021] Preferably, wire pressing ribs are provided at a plurality of locations separated from each other in the circumferential direction in at least one of the first recess and the second recess. Since a plurality of wire pressing ribs separated from each other in the circumferential direction are provided in at least one of the first recess and the second recess, the wire pressing ribs can bite into the sheath of the wire, which can help suppress displacement of the wire, such as displacement around the circumference. In addition, since the wire pressing ribs are separated in the circumferential direction, it can help allow deformation of the sheath of the wire, which can help achieve the meshing of the wire pressing ribs into the sheath. In addition, it is preferably desired that the first recess and the second recess are provided at the same circumferential spacing. Thereby, the stress is dispersed, and further stable retention of the wire can be achieved.

[0022] Preferably, the plurality of wire pressing ribs disposed at a plurality of locations separated from each other in the circumferential direction of at least one of the first recess and the second recess are dispersedly disposed at two locations separated from each other in the axial direction of the wire. This is because: since the plurality of wire pressing ribs disposed separated from each other in the circumferential direction are dispersedly disposed at two locations separated from each other in the axial direction of the wire, it is also helpful to suppress the displacement of the wire in the axial direction, and further stable retention of the wire can be achieved.

[0023] Preferably, a waterproof member is inserted outside the electric wire to prevent water from entering the connector housing, and the electric wire holding portion has a stopper function to prevent the waterproof member from being detached from the outside. In the case where the connector has a waterproof member, the strong fixing force between the shielding shell of the electric wire holding portion and the pressing portion can be used to make the electric wire holding portion also have a function as a stopper of the waterproof member. In this way, the high functionality of the connector can be ensured with a small number of parts.

[0024] <Details of Embodiments of the Invention> Specific examples of the connector of the present invention are described below with reference to the drawings. The present invention is not limited to these examples, but is shown by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0025] <Implementation Method 1> Below, use Figures 1 to 10 The connector 10 according to the first embodiment of the present invention is described. The connector 10 electrically connects the in-vehicle devices. Figure 1 The wire 12 extending from the lower left in the figure is electrically connected, and from Figure 1 The upper side of the connector is electrically connected to a terminal of a counterpart vehicle-mounted device not shown. In addition, the connector 10 can be arranged in any orientation. Figure 3 The upper part of the Figure 3 In the bottom, take the front as Figure 2 The left side of the Figure 2 The right side of the Figure 2 In the lower part, take the right side as Figure 2 In addition, regarding a plurality of identical components, sometimes only some of the components are denoted by reference numerals, and reference numerals are omitted for the other components.

[0026] <Connector 10> The connector 10 according to the first embodiment includes a connector housing 16 and a terminal 18 accommodated in the connector housing 16, and the connector housing 16 includes a wire lead-out port 14. The wire 12 is connected to the terminal 18 and is led out from the wire lead-out port 14 to the outside of the connector housing 16. In addition, the connector 10 includes: a wire holding portion 22 that holds a protruding portion 20 of the wire 12 from the connector housing 16; a metal shield shell 24 that is fixed to the connector housing 16 and covers the connector housing 16; and a metal pressing portion 26 that clamps the wire holding portion 22 between the shield shell 24 and is bolted to the shield shell 24. In addition, in the first embodiment, there are a pair of terminals 18, 18 and a pair of wires 12, 12, and each wire 12 is connected to each terminal 18.

[0027] <Wire 12> Also like Figure 3 As shown in FIG. 1 and FIG. 2 , the electric wire 12 is a covered electric wire. That is, the electric wire 12 is formed by covering the core wire 28 with an insulating coating 30 made of synthetic resin. Figure 4 or Figure 6 As shown, in Embodiment 1, each electric wire 12 extends in the front-to-back direction as a whole and is bent upward at the rear end. At the rear end (upper end) of the electric wire 12, the insulating coating 30 is stripped to expose the core wire 28. The terminal 18 is fixed to the exposed core wire 28 by welding or the like, so that the electric wire 12 is electrically connected to the terminal 18.

[0028] <Terminal 18> The terminal 18 is made of metal and has a substantially cylindrical contact portion 32 that is open in the vertical direction. The tab-shaped terminal of the other vehicle-mounted device is inserted into the contact portion 32, and the contact portion 32 and the other terminal are in contact with each other, so that each terminal 18 of the connector 10 and the terminal of the other vehicle-mounted device are electrically connected. A portion formed in a flat plate shape extending in the vertical direction is provided at the lower end of each contact portion 32. These portions formed in a flat plate shape are wire connection portions 34, and the core wire 28 exposed at the upper end of each wire 12 is fixedly mounted.

[0029] <Connector Housing 16> The connector housing 16 is formed of a synthetic resin having insulating properties. Figure 6 As shown in , the connector housing 16 according to the first embodiment is composed of a plurality of components, including: a cylindrical housing 38 having a substantially cylindrical peripheral wall 36 ; an upper housing 40 assembled to the cylindrical housing 38 ; and a lower housing 44 whose upper opening 42 is covered by the upper housing 40 .

[0030] Also like Figure 4 As shown, the cylindrical housing 38 is provided with a substantially rectangular cylindrical holding tube 46 extending in the up-down direction on the inner peripheral side of the peripheral wall 36. When the connector 10 is assembled, the contact portion 32 of the holding terminal 18 is inserted into the holding tube 46. In the first embodiment, since a pair of terminals 18, 18 are provided, a pair of holding tubes 46, 46 are arranged in the left-right direction in the cylindrical housing 38. Since the terminal of the other vehicle-mounted device is assembled to the contact portion 32 held in the holding tube 46 from above, the upper opening of the holding tube 46 is a terminal assembly port 48 for assembling the other terminal.

[0031] In addition, unillustrated roughly frame-shaped snap-fitting frames are provided on both sides of the inner circumferential surface of the peripheral wall 36 in the front-to-back direction, and these snap-fitting frames are snap-fitted with unillustrated snap-fitting protrusions provided on both sides of the inner circumferential surface of the cylindrical portion 54 in the upper shell 40 described later in the front-to-back direction, thereby assembling the cylindrical shell 38 to the upper shell 40.

[0032] The upper housing 40 includes a cover portion 50 extending in the vertical direction (direction orthogonal to the up-down direction), and the cover portion 50 is formed in a size that can cover the upper opening portion 42 of the lower housing 44. A through hole 52 penetrating in the thickness direction (up-down direction) is formed in the cover portion 50, and a substantially cylindrical cylindrical portion 54 protruding upward is formed on the outer peripheral edge of the through hole 52. In short, the inner hole of the cylindrical portion 54 extending in the up-down direction and the through hole 52 provided in the cover portion 50 are connected to each other, forming a connecting hole 56 penetrating the cylindrical portion 54 and the cover portion 50 in the up-down direction. In addition, a snap-fit ​​frame 58 protruding downward is provided on both sides of the cover portion 50 in the left-right direction.

[0033] Also like Figure 3 , Figure 4 , Figure 6 As shown in FIG. 1 , a substantially cylindrical inner insert portion 60 is provided on the lower surface of the cover portion 50 in the upper housing 40, and when the upper housing 40 is assembled to the lower housing 44, the inner insert portion 60 enters the lower housing 44. That is, the inner insert portion 60 protruding downward is provided on the outer peripheral portion of the cover portion 50, and the inner hole of the inner insert portion 60 is also connected to the communication hole 56 in the upper housing 40.

[0034] In addition, the cylindrical portion 54 of the upper housing 40 is inserted into the peripheral wall 36 of the cylindrical housing 38 to assemble the upper housing 40 and the cylindrical housing 38, but an annular waterproof rubber 62 is installed in an externally inserted state between the upper housing 40 and the cylindrical housing 38 in the vertical direction on the outer peripheral surface of the cylindrical portion 54. This can prevent water from intruding from the assembly portion of the upper housing 40 and the cylindrical housing 38. In addition, an O-ring 64 is installed on the outer peripheral surface of the inserted cylindrical portion 60 inserted into the lower housing 44. The O-ring 64 is compressed between the inserted cylindrical portion 60 and the lower housing 44, thereby preventing water from intruding from the assembly portion of the upper housing 40 and the lower housing 44.

[0035] The lower housing 44 is generally in the shape of a box having a substantially rectangular shape and opening upward, and includes a bottom wall portion 66 and a peripheral wall portion 68 protruding upward from the outer peripheral edge portion of the bottom wall portion 66. That is, the peripheral wall portion 68 includes a front wall 70, a rear wall 72, and side walls 74, 74 on both sides, all of which extend in the up-down direction. In addition, a substantially circular wire lead-out port 14 penetrating in the thickness direction (front-back direction) is formed on the front wall 70. In the first embodiment, since a pair of wires 12, 12 are provided, a pair of wire lead-out ports 14, 14 are formed in the front wall 70 in a row in the left-right direction. Furthermore, a storage cylinder portion 76 protruding forward is provided on the front wall 70, and the pair of wire lead-out ports 14, 14 are covered from the outside by the storage cylinder portion 76. The storage cylinder portion 76 has an outer shape that is long in the left-right direction, and is substantially rectangular or substantially oblong with rounded corners.

[0036] Also like Figure 7 As shown, the storage cylinder 76 stores a waterproof rubber 78 as a waterproof member made of an elastic body such as rubber. The waterproof rubber 78 is a shape roughly corresponding to the storage cylinder 76, and insertion holes 80, 80 penetrating in the thickness direction are formed at positions of the front wall 70 corresponding to the wire lead-out ports 14, 14. The waterproof rubber 78 is formed to be slightly larger than the storage cylinder 76, and when the connector 10 is assembled, the waterproof rubber 78 is assembled to the storage cylinder 76 in a roughly compressed state. This prevents water from infiltrating into the connector housing 16 through the wire lead-out ports 14. In addition, Figure 7 In the figure, for the sake of ease of viewing, the connector housing 16 (the cylindrical housing 38 , the upper housing 40 , and the lower housing 44 ) is shown in an assembled state, and the wire holding portion 22 and the pressing portion 26 are omitted.

[0037] In addition, nuts 82 are provided in a substantially buried state on the rear wall 72 and the left side wall 74 (the nuts of the rear wall 72 are omitted in the figure), and when the connector housing 16 and the shield shell 24 are fixed, the nuts 82 tighten the bolts 186 described later. Furthermore, an engaging claw 84 is provided on the upper end of the outer surface of each side wall 74, and when the upper housing 40 is assembled, each engaging frame 58 of the upper housing 40 engages with the engaging claw 84.

[0038] Here, if Figure 7 As shown in the figure, a through hole penetrating in the vertical direction is provided in the bottom wall portion 66, and the through hole constitutes an electric test hole 86. In the first embodiment, a pair of electric test holes 86, 86 are provided to be separated from each other in the left-right direction. That is, although not shown in the figure, a core wire exposed portion from which the insulating coating 30 is stripped is provided in the middle portion in the longitudinal direction of each electric wire 12, and an electric test probe or the like is inserted through each electric test hole 86. By bringing the electric test probe or the like into contact with the core wire exposed portion, for example, it is possible to confirm whether each electric wire 12 is in a energized state. Each of these electric test holes 86 can be sealed by a plug member 158 described later.

[0039] Specifically, a cylindrical portion 88 protruding downward is provided on the lower surface of the bottom wall portion 66, and the above-mentioned test hole 86 is formed including the inner hole of the cylindrical portion 88. That is, in Embodiment 1, a pair of cylindrical portions 88, 88 are provided to be separated from each other in the left-right direction. In short, each test hole 86 opens on the lower surface of the connector housing 16 (bottom wall portion 66 of the lower housing 44) through the inner hole of each cylindrical portion 88. In addition, on the lower surface of the bottom wall portion 66, a circular recess 90 opening downward is formed between the left-right directions of each cylindrical portion 88 protruding downward.

[0040] <Wire Holding Part 22> Also like Figure 5As shown, the wire holding portion 22 integrally includes: a main body portion 92 made of synthetic resin, which holds the protruding portion 20 of each wire 12 protruding to the outside from each wire lead-out port 14; and a metal bolt insertion barrel portion 94, which extends through the main body portion 92 in a first direction that is a direction intersecting the axial direction of each wire 12 (the front-to-back direction at the arrangement position of the wire holding portion 22). In the first embodiment, the first direction that is the extension direction of the bolt insertion barrel portion 94 is the up-down direction that is a direction orthogonal to the axial direction (the front-to-back direction) of each wire 12.

[0041] In particular, the wire holding portion 22 of the first embodiment can be disassembled and assembled in the vertical direction, and is composed of an upper wire holding portion 96 and a lower wire holding portion 98. In addition, in the first embodiment, the upper wire holding portion 96 and the lower wire holding portion 98 are composed of the same member, and one member (for example, the upper wire holding portion 96) can be turned upside down to become the other member (for example, the lower wire holding portion 98). Therefore, in the following description, Figure 8 , 9 , the upper wire holding portion 96 is mainly described, and the description of the lower wire holding portion 98 is partially omitted.

[0042] That is, the main body 92 made of synthetic resin that holds the electric wires 12 can also be disassembled and assembled in the up-down direction, and the main body 92 is composed of the upper first holding portion 100 and the lower second holding portion 102. That is, the upper electric wire holding portion 96 has the first holding portion 100, and the lower electric wire holding portion 98 has the second holding portion 102. In addition, the first holding portion 100 and the second holding portion 102 have the same shape.

[0043] Similarly, the bolt insertion barrel 94 can also be decomposed in the vertical direction. The bolt insertion barrel 94 is generally cylindrical in shape and has a bolt insertion hole 104 that penetrates in the vertical direction. Furthermore, the bolt insertion barrel 94 is composed of a first bolt insertion barrel 108 and a second bolt insertion barrel 112. The first bolt insertion barrel 108 is an upper cylindrical portion having an upper bolt insertion hole 106, and the second bolt insertion barrel 112 is a lower cylindrical portion having a lower bolt insertion hole 110. In addition, the bolt insertion hole 104 that penetrates the bolt insertion barrel 94 in the vertical direction is composed of an upper bolt insertion hole 106 and a lower bolt insertion hole 110. That is, the upper wire holding portion 96 has the first bolt insertion barrel 108, and the lower wire holding portion 98 has the second bolt insertion barrel 112. Furthermore, the first bolt insertion cylindrical portion 108 and the second bolt insertion cylindrical portion 112 have the same shape.

[0044] Furthermore, by assembling the upper wire holding portion 96 and the lower wire holding portion 98 from both sides of the first direction (upper and lower directions) to sandwich the wires 12, the wire holding portion 22 holds the wires 12. In short, the wire holding portion 22 is formed by assembling one member and another member turned upside down, thereby holding the wires 12. The upper wire holding portion 96 and the lower wire holding portion 98 extend along the axial direction (front-rear direction) of the wires 12 as a whole.

[0045] In addition, in the first holding portion 100 of the upper wire holding portion 96, a first recess 114 is opened on the contact surface with the second holding portion 102 of the lower wire holding portion 98, that is, the overlapping surface of the first holding portion 100 and the second holding portion 102, and the first recess 114 accommodates each wire 12 and contacts the outer peripheral surface of each wire 12. The first recess 114 extends over the entire length of the first holding portion 100 in the front-back direction. In the first embodiment, since a pair of wires 12, 12 are provided, a pair of first recesses 114, 114 are provided in the first holding portion 100 to be separated from each other in the left-right direction.

[0046] Furthermore, the first holding portion 100 includes a connecting portion 116 that connects each first recess 114 between the pair of first recesses 114, 114 in the left-right direction, and a protruding portion 118 that protrudes to both sides of the left-right direction at the rear portion of each first recess 114. The connecting portion 116 is provided over the substantially entire length of the length direction (front-rear direction) of the first holding portion 100 (each first recess 114). In addition, each protruding portion 118 has a substantially rectangular shape when viewed from above. Furthermore, in each of these protruding portions 118, the first bolt insertion barrel 108 is arranged in a substantially buried state. In the first embodiment, the first holding portion 100 and the first bolt insertion barrel 108 are formed integrally, and the upper wire holding portion 96 is formed as an integrally formed product of the first holding portion 100 having the first bolt insertion barrel 108.

[0047] The lengthwise dimension (vertical dimension) of each of the first bolt insertion tubes 108 is slightly larger than the vertical dimension of each protrusion 118 (which is substantially equal to the vertical dimension of the first holding portion 100). Thus, the protruding end portions 120 protruding vertically from each protrusion 118 (first holding portion 100) are formed by the ends (vertical ends) on both sides of the lengthwise direction of each of the first bolt insertion tubes 108.

[0048] The protrusion dimension α (see FIG. 1 ) of the portion of each protruding end portion 120 that protrudes upward from the first holding portion 100 (each protruding portion 118 ) is Figure 5) is not limited, for example, it is preferably 0.5 mm or more, and more preferably 0.6 mm or more. By making the protruding dimension α of each protruding end 120 greater than 0.5 mm, the gaps 178 and 180 described later can be stably formed, allowing the expansion of the resin (main body 92) in a high temperature environment. In addition, the upper limit value of the protruding dimension α of each protruding end 120 is not limited, for example, it is less than 1.0 mm. In this way, it is possible to avoid the gaps 178 and 180 from becoming unnecessary larger, and thus it is possible to avoid the connector 10 from becoming larger.

[0049] In addition, a wire pressing rib 122 is provided on the inner circumferential surface of each first recess 114 overlapping with each wire 12. In the first embodiment, a plurality of wire pressing ribs 122 are provided at a plurality of locations on the inner circumferential surface of the rear portion of each first recess 114, separated from each other in the circumferential direction. Figure 5 As shown, the protruding top portion of each wire pressing rib 122 is roughly hemispherical. In Embodiment 1, each wire pressing rib 122 in each first recess 114 extends straight downward, and the central axis of the protruding top portion having a roughly hemispherical shape is the up-down direction. In particular, in Embodiment 1, the plurality of wire pressing ribs 122 provided at multiple locations in the circumferential direction are dispersedly provided at two locations separated from each other in the axial direction of each wire 12 (the length direction of each first recess 114, the front-to-back direction). Specifically, the plurality of wire pressing ribs 122 separated in the circumferential direction are provided at positions roughly corresponding to the front end portion and the rear end portion of each protrusion 118 in the front-to-back direction.

[0050] Furthermore, in the first holding portion 100, elastic locking pieces 124 protruding toward the contact surface (overlapping surface) side with the second holding portion 102 and locking claws 126 capable of engaging with the elastic locking pieces 124 are provided on both sides in the left-right direction of the front portion of each first recess 114. In other words, each first recess 114 in the first holding portion 100 further extends beyond each first bolt insertion cylinder 108 in the protruding direction of each wire 12 from each wire lead-out port 14 (direction from the rear toward the front), and the elastic locking pieces 124 and the locking claws 126 are provided on the extended end side (front end side) of each first recess 114 in the first holding portion 100.

[0051] As described above, the upper wire holding portion 96 and the lower wire holding portion 98 are of the same shape and are arranged in a state of being reversed upside down. That is, in the second holding portion 102 in the lower wire holding portion 98, the second recess 128 is opened on the contact surface of the upper wire holding portion 96 that contacts the first holding portion 100, and the second recess 128 accommodates each wire 12 and contacts the outer peripheral surface of each wire 12. In the second holding portion 102, a pair of second recesses 128, 128 are provided to be separated from each other in the left-right direction.

[0052] In the second retaining portion 102, a pair of second recesses 128, 128 are connected by a connecting portion 116, and a protrusion 118 protruding to both sides in the left-right direction is provided at the rear portion of each second recess 128. And, in each of these protrusions 118, the second bolt insertion cylinder 112 is arranged in a substantially buried state. In Embodiment 1, the lower wire retaining portion 98 is formed as an integral product of the second retaining portion 102 having the second bolt insertion cylinder 112. In addition, by the ends on both sides in the longitudinal direction of each second bolt insertion cylinder 112 (both ends in the up-down direction), a protruding end portion 120 protruding to both sides in the up-down direction than each protrusion 118 (second retaining portion 102) is formed. The protruding dimension β (refer to Figure 5 ) is set to the same value as the protrusion dimension α of the protruding end portion 120 of each first bolt insertion cylinder 108 from the first holding portion 100 .

[0053] In addition, a plurality of wire pressing ribs 122 are provided on the inner circumferential surface of each second recess 128 overlapping with each wire 12. The shape and arrangement of each wire pressing rib 122 provided in each second recess 128 are the same as those of each wire pressing rib 122 provided in each first recess 114. Furthermore, in the second holding portion 102, elastic locking pieces 124 and locking claws 126 that can engage with each other are provided on both sides of the left and right directions of the front portion of each second recess 128.

[0054] As described later, when the upper wire holding portion 96 and the lower wire holding portion 98 are assembled, the first recesses 114 and the second recesses 128 are connected to overlap each other to form a wire through hole 130 extending in the front-rear direction. On the inner circumferential surface of the wire through hole 130, the wire pressing ribs 122 of the first recesses 114 and the wire pressing ribs 122 of the second recesses 128 are arranged in a substantially annular shape. By providing such wire pressing ribs 122, when the connector 10 is assembled, the wire pressing ribs 122 bite into the insulating coating 30 of the wires 12, and the holding force of the wire holding portion 22 on the wires 12 can be improved.

[0055] <Shielding case 24> Also like Figure 1 As shown in FIG. 1 and FIG. 2 , the lower portion of the connector housing 16 having the above-described structure is accommodated in a metal shielding shell 24. Fig.10As shown, the shield shell 24 is generally in a box shape that is open upward, and includes a bottom wall 132 that is generally rectangular in a plan view, and a rear wall portion 134 and a pair of side wall portions 136, 136 that protrude upward from the rear and left and right sides of the outer peripheral edge portion of the bottom wall 132. The area surrounded by the bottom wall 132, the rear wall portion 134, and the pair of side wall portions 136, 136 constitutes a storage recess 138 that stores the connector housing 16.

[0056] In the first embodiment, the front portion of the bottom wall 132 extends forward of each side wall portion 136, and the front extension portion 140 is formed by the extension portion. The bolt hole 142 in which the bolt 184 described later can be fastened is formed in the front extension portion 140. Therefore, by placing the wire holding portion 22 on the front extension portion 140, and further overlapping the pressing portion 26 from above the wire holding portion 22 and fastening the bolt 184, the wire holding portion 22 can be clamped in the vertical direction between the front extension portion 140 and the pressing portion 26, both of which are made of metal.

[0057] In addition, in the shield shell 24, the bottom wall 132 overlapping the bottom wall 66 of the connector housing 16 is formed with an insertion hole 144 in a manner that penetrates the bottom wall 132 in the thickness direction (up and down direction), and each cylindrical portion 88 protruding downward from the bottom wall 66 is inserted into the insertion hole 144. The insertion hole 144 is formed at a position corresponding to each cylindrical portion 88, and a pair of insertion holes 144, 144 are provided to be separated from each other in the left-right direction. In addition, a cylindrical circular protrusion 146 protruding upward from the bottom wall 132 is provided between the left-right directions of each insertion hole 144, and a bolt hole 148 that can be fastened with a bolt 166 described later is formed through the inner hole of the circular protrusion 146.

[0058] Furthermore, bolt insertion holes 150 are provided in the rear wall portion 134 and the left side wall portion 136 of the shield shell 24 at positions corresponding to the nuts 82 provided on the rear wall 72 and the left side wall 74 of the connector housing 16 (the bolt insertion holes of the rear wall portion 134 are not shown in the figure), and bolts 186 described later are inserted into the bolt insertion holes 150. In addition, an external connection portion 152 protruding rearward is provided at the upper end portion of the rear wall portion 134, and a bolt insertion hole 154 penetrating in the thickness direction (upward and downward direction) is formed in the external connection portion 152. The terminal portion provided at the terminal end of the external electric wire, etc., not shown in the figure, is overlapped with the external connection portion 152, and bolts, not shown in the figure, are inserted into each bolt insertion hole 154 and tightened, so that the shield shell 24 and the external electric wire, etc. are electrically connected. In addition, a positioning portion 156 is formed at the left end of the rear end surface of the external connection portion 152, and the positioning portion 156 can be engaged with a claw portion 172 of the later-described electrical hole sealing member 160. The positioning portion 156 is formed in a relatively concave shape by protruding backward on both sides of the left and right directions of the engagement position of the claw portion 172.

[0059] In Embodiment 1, a test hole sealing member 160 is assembled on the lower surface of the shielding shell 24, and the test hole sealing member 160 includes a plug member 158 for sealing each test hole 86 of the connector housing 16. Two plug members 158 are provided corresponding to each test hole 86, and a pair of plug members 158, 158 are arranged to be separated from each other in the left-right direction. Each plug member 158 is generally cylindrical in shape, and is formed of an elastic body such as rubber. The maximum outer diameter of the portion of each plug member 158 inserted into each test hole 86 is larger than the inner diameter of each cylindrical portion 88 constituting each test hole 86, and each plug member 158 is inserted into each test hole 86 from below in a substantially pressed state, so that each plug member 15 is fixed to each test hole 86.

[0060] In addition, each of these plug members 158 is assembled to a plug member bracket 162 that holds each of the plug members 158. The plug member bracket 162 is bent along the bottom wall 132, the rear wall portion 134, and the external connection portion 152 of the shielding shell 24, and extends in the front-to-back direction as a whole, and is formed of, for example, metal. That is, a holding portion 164 that holds each of the plug members 158 is provided at one end (front end) of the plug member bracket 162, and a bolt insertion hole 168 through which a bolt 166 is inserted is formed in the left-right central portion of the holding portion 164. In addition, a bolt insertion hole 170 is formed at the other end (rear end) of the plug member bracket 162, and when the plug member bracket 162 is fixed to the shielding shell 24, the bolt insertion hole 170 and the bolt insertion hole 154 of the external connection portion 152 are connected to each other. Furthermore, a claw portion 172 is formed at the other end portion (rear end portion) of the plug member holder 162 , and when the plug member holder 162 is fixed to the shield case 24 , the claw portion 172 engages with the positioning portion 156 provided at the rear end portion of the external connection portion 152 .

[0061] In the first embodiment, the plug members 158 and the plug member holder 162 are integrally formed to constitute the test hole sealing member 160. The test hole sealing member 160 is fixed to the connector housing 16 from below by overlapping via the shielding shell 24, so that each test hole 86 is sealed by each plug member 158. That is, each plug member 158 is pressed into each test hole 86 (each cylindrical portion 88) opened downward via the insertion hole 144 of the shielding shell 24, and the claw portion 172 is engaged with the positioning portion 156 in the external connection portion 152, and the bolt 166 is inserted into the bolt insertion hole 168 and fastened to the bolt hole 148 of the shielding shell 24, so that the test hole sealing member 160 can be fixed to the shielding shell 24. In short, by releasing the fastening of the bolts 166 relative to the shielding shell 24, the plug members 158 are pulled out from the test holes 86 (cylindrical portions 88) by holding the test holes sealing members 160 (plug member holders 162), so that the test holes 86 are opened downward through the insertion holes 144 of the shielding shell 24.

[0062] <Pressing portion 26> The pressing portion 26 is a member that clamps the wire holding portion 22 between the shield shell 24 in the first direction (up-down direction) that is a direction intersecting the axial direction (front-rear direction) of the wire 12, and is bolted to the shield shell 24. In the first embodiment, the pressing portion 26 is bolted to the shield shell 24 in a state where the pressing portion 26 overlaps with the wire holding portion 22 placed on the front extension portion 140 of the shield shell 24 from above.

[0063] Also like Figure 1 , Figure 3 As shown in the figure, the pressing portion 26 has a pressing wall portion 174 that covers and presses the wire holding portion 22 from above. The pressing wall portion 174 is substantially rectangular in a plan view, and bolt insertion holes 176, 176 that penetrate in the vertical direction are formed on both sides of the pressing wall portion 174 in the left and right directions. That is, when the pressing portion 26 is fixed to the shielding shell 24, the wire holding portion 22 is clamped between the pressing wall portion 174 and the front extension portion 140 in the vertical direction.

[0064] Here, as described above, in the upper wire holding portion 96 of the wire holding portion 22, the protruding end portion 120 as the end portion of the first bolt insertion tube portion 108 protrudes above the first holding portion 100, and in the lower wire holding portion 98, the protruding end portion 120 as the end portion of the second bolt insertion tube portion 112 protrudes below the second holding portion 102. Therefore, when the pressing portion 26 is fixed to the shielding case 24, as shown in FIG. Figure 3 , Figure 5 As shown, the pressing wall portion 174 and the protruding end portion 120 of the first bolt insertion cylinder portion 108 abut against each other, and a gap 178 is formed between the first retaining portion 100 and the pressing wall portion 174. In addition, the front extension portion 140 and the protruding end portion 120 of the second bolt insertion cylinder portion 112 abut against each other, and a gap 180 is formed between the second retaining portion 102 and the front extension portion 140. That is, each protruding end portion 120 of the first and second bolt insertion cylinder portions 108, 112 protrudes from the first and second retaining portions 100, 102 on both sides in the up-down direction and abuts against the pressing wall portion 174 and the front extension portion 140, so that the first and second retaining portions 100, 102 are separated from the pressing wall portion 174 and the front extension portion 140 by the gaps 178, 180. In addition, in Figure 3 , Figure 5 Although it is difficult to understand because the lightening holes in the first retaining portion 100 or the second retaining portion 102 are shown in the figure, the upper end surface of the first retaining portion 100 and the lower end surface of the second retaining portion 102 are located on the same plane as the end surface of the protrusion 118 provided on the first and second retaining portions 100 and 102.

[0065] In addition, in addition to being set according to the protrusion dimension α of the first bolt insertion cylinder 108 from the first retaining portion 100 or the protrusion dimension β of the second bolt insertion cylinder 112 from the second retaining portion 102, the vertical dimensions of these gaps 178 and 180 can also be determined by the following formula 1. Formula 1: Gap > (a×(t1-t2)×c)+(b×(t1-t2)×d) Here, in the above formula 1, a (refer to Figure 5 ) is the plate thickness dimension of the first holding portion 100 or the second holding portion 102 in the first direction (vertical direction). b (refer to Figure 5 ) is the plate thickness of the pressing portion 26 or the shielding shell 24 at the portion in contact with the first holding portion 100 or the second holding portion 102 in the first direction (vertical direction), and in the first embodiment, is the plate thickness of the pressing wall portion 174 or the front extension portion 140. c is the linear expansion coefficient of the material of the main body portion 92 (the first holding portion 100 and the second holding portion 102), and d is the linear expansion coefficient of the material of the pressing portion 26 or the shielding shell 24. t1 is the heat-resistant temperature of the insulating coating 30 of each electric wire 12, and t2 is room temperature (for example, within the range of 5°C to 35°C).

[0066] A cylindrical portion 182 protruding forward is provided at the front end of the pressing wall portion 174. The inner hole of the cylindrical portion 182 is open on both sides in the front-rear direction. When the connector 10 is assembled, the front part of the wire holding portion 22 (the first holding portion 100 and the second holding portion 102) is covered by the cylindrical portion 182.

[0067] <Assembly Method of Connector 10> A specific example of the assembly method of the connector 10 will be described below. In addition, the assembly method of the connector 10 is not limited to the form described below.

[0068] First, the insulating coating 30 is stripped off at the end of each electric wire 12 to expose the core wire 28, and each terminal 18 is fixed. Then, the end of each electric wire 12 on the side where each terminal 18 is fixed is inserted into the communication hole 56 of the upper housing 40, and the end of each electric wire 12 on the side opposite to the side where each terminal 18 is fixed is inserted into each electric wire lead-out port 14 of the lower housing 44, and at the same time, each electric wire 12 is bent so that the upper housing 40 and the lower housing 44 are opposed to each other in the vertical direction. Then, by bringing the upper housing 40 and the lower housing 44 closer to each other in the vertical direction, each engaging frame 58 of the upper housing 40 and each engaging claw 84 of the lower housing 44 are engaged, thereby fixing the upper housing 40 and the lower housing 44 to each other.

[0069] Furthermore, the ends of the wires 12 on the side opposite to the side where the terminals 18 are fixed are inserted into the insertion holes 80 of the waterproof rubber 78, and the waterproof rubber 78 is stored in the storage tube 76 of the lower housing 44. In addition, the waterproof rubber 62 and the cylindrical housing 38 are assembled to the upper housing 40 from above. Thus, the connector housing 16 is completed in a state where the wires 12 are assembled.

[0070] Next, the upper wire holding part 96 and the lower wire holding part 98 are opposed to the protruding parts 20 of the wires 12 protruding to the outside from the wire lead-out ports 14 from both sides in the vertical direction, and the upper wire holding part 96 and the lower wire holding part 98 are brought close to each other. Then, the elastic locking pieces 124 and the locking claws 126 of the upper and lower wire holding parts 96 and 98 are engaged, and the upper and lower wire holding parts 96 and 98 are assembled to each other. Thus, the bolt insertion holes 106 of the first bolt insertion barrels 108 and the bolt insertion holes 110 of the second bolt insertion barrels 112 are connected in the vertical direction, and the bolt insertion holes 104 of the wire holding part 22 are formed. Then, the front part of the wire holding part 22 is inserted into the cylindrical part 182 of the pressing part 26, and the bolt insertion holes 104 of the wire holding part 22 and the bolt insertion holes 176 of the pressing part 26 are connected in the vertical direction.

[0071] Then, the lower portion of the connector housing 16 is accommodated in the accommodation recess 138 of the shield shell 24, and the wire holding portion 22 is placed on the front extension portion 140 of the shield shell 24. Then, the pressing portion 26 and the wire holding portion 22 are fixed to the shield shell 24 by the bolts 184. That is, by placing the wire holding portion 22 on the front extension portion 140, the pressing portion 26 (pressing wall portion 174), each first bolt insertion cylinder portion 108, each second bolt insertion cylinder portion 112, and the shield shell 24 (front extension portion 140) are sequentially overlapped in the vertical direction, each bolt insertion hole 176, 106, 110 and each bolt hole 142 are connected, and the bolts 184 are used to perform bolt tightening.

[0072] In addition, the shield shell 24 and the connector housing 16 are fixed by the bolts 186 by inserting the bolts 186 from the rear and left of the shield shell 24 and tightening them to the nuts 82 provided on the connector housing 16. In addition, when the bottom wall 132 of the shield shell 24 and the bottom wall portion 66 of the connector housing 16 are overlapped and the connector housing 16 is accommodated in the accommodation recess 138, the cylindrical portions 88 are inserted into the insertion holes 144, and the circular protrusions 146 are inserted into the circular recesses 90. Therefore, the positioning effect of the shield shell 24 and the connector housing 16 can be exerted by these insertion holes 144 and the cylindrical portions 88, or the circular protrusions 146 and the circular recesses 90.

[0073] Then, the test hole sealing member 160 is overlapped with the shield shell 24 from below and the bolts 166 are tightened, so that each test hole 86 is sealed by each plug member 158. Thus, the connector 10 is completed.

[0074] In the assembled state of the connector 10, Figure 3 As shown, the wire holding portion 22 is located in front of the waterproof rubber 78 provided on the connector housing 16. As a result, the waterproof rubber 78 is prevented from being detached to the outside by the wire holding portion 22, and the wire holding portion 22 has a stopper function to prevent the waterproof rubber 78 from being detached to the outside.

[0075] According to the connector 10 involved in the first embodiment, the wire holding portion 22 for holding the protruding portion 20 of each wire 12 protruding from the connector housing 16 is clamped by the pressing portion 26 (pressing wall portion 174) and the shield shell 24 (front extension portion 140) both of which are made of metal. In particular, the wire holding portion 22 includes each metal bolt insertion cylinder portion 94 integrally provided on the main body portion 92 made of synthetic resin, and the protruding end portion 120 of the bolt insertion cylinder portion 94 protrudes from the main body portion 92 to both sides in the upper and lower directions, and directly abuts against the pressing portion 26 (pressing wall portion 174) and the shield shell 24 (front extension portion 140). By fixing the wire holding portion 22 with bolts in this state, the axial force of each bolt 184 can be stably applied between the pressing portion 26 and the shield shell 24. Therefore, the wire holding portion 22 can be more firmly held between the shield shell 24 and the pressing portion 26, and the upper wire holding portion 96 and the lower wire holding portion 98 can be suppressed from shaking due to vibration. As a result, the holding force of the wire holding portion 22 on each wire 12 can be improved, and the external force caused by vibration or the like can be prevented from being transmitted to each terminal 18 provided at the end of each wire 12.

[0076] In addition, the protruding end portion 120 of the bolt insertion tube portion 94 protrudes outward in the vertical direction from the main body portion 92 constituting the wire holding portion 22, and gaps 178 and 180 are provided between the main body portion 92 (the first and second holding portions 100 and 102) and the pressing portion 26 (pressing wall portion 174) in the vertical direction and between the main body portion 92 and the shield shell 24 (the front extension portion 140) in the vertical direction. By providing these gaps 178 and 180, expansion deformation of the first and second holding portions 100 and 102 made of synthetic resin is allowed in a high temperature environment, and compared with a case where no gap is provided, the biting into each insulating coating layer 30 in a high temperature environment can be suppressed, which can contribute to reducing the risk of creep failure of the insulating coating layer 30. As a result, when the expansion deformation of the first and second holding parts 100 and 102 is released, for example, in a normal temperature environment, each insulating coating layer 30 can stably return to the initial shape, and it is possible to suppress the generation of gaps between each insulating coating layer 30 and the first and second holding parts 100 and 102. As a result, it is possible to avoid a reduction in the holding performance of the wire holding part 22 even when exposed to a high temperature environment, for example, and the holding of each wire 12 by the wire holding part 22 can be maintained in a good state.

[0077] In particular, since the bolt insertion tube 94 protrudes to both sides of the main body 92 in the first direction (up and down direction), gaps 178 and 180 can be formed on both sides of the main body 92 (the first and second holding parts 100 and 102) in the up and down directions, and the expansion deformation of the first and second holding parts 100 and 102 in a high temperature environment can be more stably allowed. As a result, for example, even in a normal temperature environment, it is possible to reliably avoid the generation of gaps between each insulating coating 30 and the first and second holding parts 100 and 102, and it is possible to further suppress the reduction of the holding performance.

[0078] In bolt insertion tube 94 , protrusion dimensions α and β from body 92 are preferably 0.5 mm or more. This allows stable formation of gaps 178 and 180 between body 92 (first and second holding portions 100 and 102 ) and pressing portion 26 and shield case 24 .

[0079] The vertical dimensions of the gap 178 between the first holding portion 100 and the pressing portion 26 and the gap 180 between the second holding portion 102 and the shield case 24 can also be determined by the above-mentioned formula 1. In this way, the gaps 178 and 180 can be formed stably.

[0080] The wire holding portion 22 is composed of an upper wire holding portion 96 on the upper side and a lower wire holding portion 98 on the lower side. That is, the main body 92 is composed of a first holding portion 100 and a second holding portion 102, and the bolt insertion cylinder 94 is composed of a first bolt insertion cylinder 108 and a second bolt insertion cylinder 112. By setting the wire holding portion 22 as a top-bottom split structure, the upper wire holding portion 96 and the lower wire holding portion 98 can be assembled from both sides of the upper and lower directions of each wire 12, and the workability in the assembly operation can be improved. In particular, by setting the upper wire holding portion 96 and the lower wire holding portion 98 as mutually identical components, it is possible to reduce manufacturing costs, the labor of parts management, etc.

[0081] In addition, the first holding portion 100 and the second holding portion 102 are each provided with an elastic locking piece 124 and a locking claw portion 126 that can be engaged with each other. Thus, the first holding portion 100 (upper wire holding portion 96) and the second holding portion 102 (lower wire holding portion 98) can be formed into the same shape and assembled with each other. In addition, by the locking mechanism of each elastic locking piece 124 and each locking claw portion 126, the wire holding portion 22 can be temporarily fixed to each wire 12 before being bolted to the shielding shell 24. Thus, the tightening operation of each bolt 184 can be stably performed.

[0082] In particular, the elastic locking pieces 124 and the locking claws 126 are provided at the front portions of the first and second holding portions 100 and 102, and the first and second bolt insertion tubes 108 and 112 through which the bolts 184 are inserted are provided at the rear portions of the first and second holding portions 100 and 102. That is, the front portions of the first and second holding portions 100 and 102 can be fixed by the locking mechanism, and the rear portions of the first and second holding portions 100 and 102 can be fixed by bolt tightening, and the generation of gaps between the electric wires 12 at the front and rear sides of the first and second holding portions 100 and 102 can be more reliably prevented.

[0083] The wire pressing ribs 122 are provided at a plurality of locations separated in the circumferential direction on the inner circumferential surfaces of the first recesses 114 and the second recesses 128. The wire pressing ribs 122 are engaged with the insulating coating 30 of the wires 12, so that displacement of the wires 12 in the wire holding portion 22 can be more reliably prevented. In particular, in the first embodiment, the wire pressing ribs 122 are provided in the first and second holding portions 100 and 102 near the first and second bolt insertion barrels 108 and 112 through which the bolts 184 are inserted. Thus, the tightening force of the bolts 184 can be applied to the wire pressing ribs 122, and the holding performance of the wire pressing ribs 122 on the wires 12 can be improved.

[0084] Furthermore, a plurality of wire pressing ribs 122 separated in the circumferential direction are provided at two locations separated from each other in the front-rear direction, which is the axial direction of each wire 12, on the inner circumferential surface of each first recess 114 and each second recess 128. Thus, displacement of each wire 12 in the front-rear direction, and shaking displacement (twist) in the up-and-down direction relative to the wire holding portion 22 can be more effectively prevented.

[0085] The wire holding portion 22 is fixed to the front of the waterproof rubber 78 provided on the connector housing 16, and the waterproof rubber 78 is prevented from being detached to the outside by the wire holding portion 22. Thus, the wire holding portion 22 not only has the function of holding the wires, but also has the function of a stopper to prevent the waterproof rubber 78 from being detached. For example, it is not necessary to separately provide a member for holding each wire and a member for preventing the waterproof rubber from being detached, and the number of parts in the connector 10 can be reduced and the structure can be simplified.

[0086] <Modification> As a specific example of the present invention, the first embodiment is described in detail, but the present invention is not limited to this specific description. Variations and improvements within the scope of the purpose of the present invention are also included in the present invention. For example, the following variations of the embodiment are also included in the technical scope of the present invention.

[0087] (1) In the above-described embodiment, the upper wire retaining portion 96 and the lower wire retaining portion 98 are formed into the same structure, and the protruding dimension α of the first bolt insertion barrel 108 protruding from the first retaining portion 100 and the protruding dimension β of the second bolt insertion barrel 112 protruding from the second retaining portion 102 are equal, but the present invention is not limited to this embodiment. For example, the structures of the upper wire retaining portion and the lower wire retaining portion may be different from each other, that is, the protruding dimension α of the first bolt insertion barrel protruding from the first retaining portion and the protruding dimension β of the second bolt insertion barrel protruding from the second retaining portion may be different from each other. Specifically, for example, Fig.11 As shown in the connector 190, the protruding dimension of the second bolt insertion cylinder 192 from the second holding portion 194 is set to 0, and no gap is provided between the second holding portion 194 and the shielding shell 24 (front extension portion 140). Therefore, in the connector of the present invention, the bolt insertion cylinder protrudes from the main body only on one side in the first direction (up and down direction), and the main body is separated from one side of the shielding shell and the pressing portion by a gap.

[0088] (2) In the above embodiment, two electric wires 12, 12 are provided, but the number of electric wires may be one or three or more.

[0089] (3) In addition to the upper wire holding portion and the lower wire holding portion being formed as separate bodies as in the above-described embodiment, the wire holding portion may also be a structure in which one end of the upper wire holding portion and the lower wire holding portion are hingedly connected to each other via a hinge portion. In this case, the upper wire holding portion and the lower wire holding portion can be opened and closed with the hinge portion as the center, and after the upper wire holding portion and the lower wire holding portion are expanded and the wire is sandwiched therebetween, the other ends of the upper wire holding portion and the lower wire holding portion are fixed to each other, so that the wire can be held by the wire holding portion. In addition, the main body of the wire holding portion may also be configured as a single resin component having a wire through hole and a single bolt insertion barrel embedded therein. In such a case, for example, the wire may be inserted into the wire through hole before the terminal is connected to the wire, and the wire holding portion may be pre-installed on the protruding portion of the wire.

[0090] (4) In the above embodiment, each wire pressing rib 122 is provided on both the inner circumference of each first recess 114 of the first holding portion 100 and the inner circumference of each second recess 128 of the second holding portion 102, but it may be provided on either one or not. Even in the case where the wire pressing rib is provided, the wire pressing rib is not limited to the form of being formed in a semicircular ring shape on the inner circumference of each first recess and / or each second recess as in the above embodiment, and may be in any shape such as a protrusion, a shape extending along the axial direction of each wire, a spiral shape, etc. In addition, in the above embodiment, each wire pressing rib 122 provided in each of the first and second recesses 114, 128 protrudes in the vertical direction, but each wire pressing rib may protrude in the radial direction of each of the first and second recesses (wire through-holes). Furthermore, each wire pressing rib of each first recess and each wire pressing rib of each second recess do not have to be provided at the same position in the front-back direction, and may be provided at different positions in the front-back direction.

[0091] (5) In the above embodiment, the connector housing 16 and the shield shell 24 are fixed by fastening the bolts 186. However, for example, an engaging protrusion and an engaging frame that engage with each other may be provided to fix the connector housing and the shield shell by the engagement of these.

[0092] (6) The shape of the connector housing 16 described in the above embodiment is merely an example and is not limited to this shape. For example, the connector of the present invention does not necessarily need a test hole, and the test hole and the test hole sealing member may not be provided. Description of Reference Numerals

[0093] 10 Connector (Implementation 1) 12 Wire 14 Wire outlet 16 Connector housing 18 terminals 20 Protruding parts 22 Wire holding part 24 Shielding Shell 26 Pressing part 28 core wire 30 Insulation coating 32 Contact part 34 Wire connection 36 Wall 38 cylindrical shell 40 Upper shell 42 Upper opening 44 Lower shell 46 Holding cylinder 48 Terminal assembly port 50 Cover plate 52 Through hole 54 cylindrical part 56 connecting hole 58 snap-fit ​​frame 60 Insertion tube 62 Waterproof rubber 64 O-ring 66 bottom wall 68 Wall 70 Anterior wall 72 Back wall 74 Sidewall 76 Storage tube 78 Waterproof rubber (waterproof component) 80 Through hole 82 Nut 84 snap-on claw 86 Electrical test hole 88 Cylinder 90 Circular concave 92 Main body 94 Bolt inserted through the barrel 96 Upper wire holding part 98 Lower wire holding part 100 1st holding part 102 Second holding unit 104, 106 Bolt insertion holes 108 The first bolt is inserted through the barrel 110 Bolt insertion hole 112 The second bolt is inserted through the cylinder 114 No. 1 Concave 116 Connection 118 Protrusion 120 protruding end 122 Wire pressing rib 124 elastic locking piece 126 Locking claw 128 No. 2 Concave 130 Wire through hole 132 bottom wall 134 rear wall 136 Side wall 138 Storage recess 140 Front extension 142 Bolt holes 144 Insert hole 146 round convex part 148 Bolt Holes 150 Bolt through hole 152 External connection 154 Bolt insertion hole 156 Positioning Department 158 bolt component 160 Electrical testing hole sealing component 162 bolt support 164 Maintaining Department 166 Bolt 168, 170 Bolt insertion holes 172 claws 174 Press the wall 176 Bolt insertion hole 178, 180 gap 182 cylindrical part 184, 186 Bolts 190 Connector( Fig.11 ) 192 The second bolt is inserted through the cylinder 194 Second holding unit

Claims

1. A connector having: A connector housing having a wire lead-out port; An electric wire connected to a terminal received in the connector housing and led out from the electric wire lead-out port to the outside of the connector housing; an electric wire holding portion integrally comprising a main body portion made of synthetic resin and a bolt insertion cylinder portion made of metal, wherein the main body portion holds a protruding portion of the electric wire protruding to the outside from the electric wire lead-out port, and the bolt insertion cylinder portion extends through the main body portion in a first direction intersecting the axial direction of the electric wire; A metal shielding shell fixed to the connector housing and covering the connector housing; as well as, The metal pressing portion sandwiches the wire holding portion between the shielding shell and the metal pressing portion in the first direction and is bolt-fastened to the shielding shell by a bolt inserted through the bolt insertion tube. The bolt insertion tube has a protruding end protruding from the main body in at least one side in the first direction, and the main body is separated from the shielding shell or the pressing portion with a gap by causing the protruding end to abut against the shielding shell or the pressing portion.

2. The connector according to claim 1, wherein: The bolt insertion tube has a pair of protruding ends protruding from the main body on both sides of the first direction, and the main body is separated from the shielding shell and the pressing portion by the pair of protruding ends abutting against the shielding shell and the pressing portion.

3. The connector according to claim 1 or claim 2, wherein: The protruding end portion of the bolt insertion tube protrudes from the main body portion in the first direction by a protruding dimension of 0.5 mm or more.

4. The connector according to claim 2, wherein: The main body of the wire holding portion includes a first holding portion and a second holding portion, wherein the first holding portion and the second holding portion sandwich and hold the wire from both sides in the first direction and are assembled to constitute the main body. A first recess is opened on a contact surface of the first holding portion that contacts the second holding portion, and the first recess accommodates the electric wire and contacts the outer peripheral surface of the electric wire. A second recess is opened on a contact surface of the second holding portion that contacts the first holding portion, and the second recess accommodates the electric wire and contacts the outer peripheral surface of the electric wire. When the first holding portion and the second holding portion are assembled, the first recess and the second recess are connected to form a wire through hole. The first holding portion includes a first bolt insertion tube portion, and the first bolt insertion tube portion includes a pair of protruding end portions penetrating the first holding portion in the first direction and protruding to both sides in the first direction. The second holding portion includes a second bolt insertion tube portion, and the second bolt insertion tube portion includes a pair of protruding end portions penetrating the second holding portion in the first direction and protruding to both sides in the first direction. The pressing portion, the first bolt insertion tube portion, the second bolt insertion tube portion, and the shielding case are sequentially overlapped in the first direction and are bolt-fastened by the bolts.

5. The connector according to claim 1 or claim 2, wherein: The gap between the main body and the shielding case or the pressing portion in the first direction is determined by the following formula 1: Formula 1: Gap > (a×(t1-t2)×c)+(b×(t1-t2)×d) In Formula 1, a is the plate thickness of the first holding part or the second holding part in the first direction, b is the plate thickness of the pressing part or the shielding shell at the part in contact with the first holding part or the second holding part in the first direction, c is the linear expansion coefficient of the material of the first holding part or the second holding part, d is the linear expansion coefficient of the material of the pressing part or the shielding shell, t1 is the heat resistance temperature of the coating layer of the wire, and t2 is room temperature, that is, in the range of 5°C to 35°C.

6. The connector according to claim 4, wherein: The first recess of the first holding portion and the second recess of the second holding portion extend further in the protruding direction of the electric wire from the electric wire lead-out port, respectively, over the first bolt insertion tube and the second bolt insertion tube. An elastic locking piece and a locking claw portion connecting the first holding portion and the second holding portion are provided on one and the other of the first holding portion and the second holding portion on the extending end sides of the first recess and the second recess, respectively.

7. The connector according to claim 4 or claim 6, wherein: Wire pressing ribs are provided at a plurality of locations separated from each other in the circumferential direction in at least one of the first recess and the second recess.

8. The connector according to claim 7, wherein: The plurality of electric wire pressing ribs provided at a plurality of locations separated from each other in the circumferential direction of at least one of the first recess and the second recess are provided in a dispersed manner at two locations separated from each other in the axial direction of the electric wire.

9. The connector according to claim 1 or claim 2, wherein: A waterproof member is inserted outside the electric wire to prevent water from entering the connector housing, and the electric wire holding portion has a stopper function to prevent the waterproof member from being detached to the outside.

Images