WO2024062906A1

WO2024062906A1 - Connector

Info

Publication number: WO2024062906A1
Application number: PCT/JP2023/032078
Authority: WO
Inventors: 裕樹廣瀬; 貴布山上
Original assignee: 住友電装株式会社
Priority date: 2022-09-21
Filing date: 2023-09-01
Publication date: 2024-03-28
Also published as: JP2024044709A

Abstract

This connector 10 is attached to a counterpart-side member 1 from a first direction by tightening a bolt 4 and is such that a seal ring 5 is disposed between the connector 10 and the counterpart-side member 1, wherein: the connector 10 comprises a housing 11 and a metal collar 30 in which is formed an insertion hole 31 into which the bolt 4 is inserted; the housing 11 is provided with a flange part 20 that faces the counterpart-side member 1 in the first direction; a through-hole 23 into which the collar 30 is inserted is formed in the flange part 20; the flange part 20 is provided with a first surface 21 that faces the counterpart-side member 1, a second surface 22 that is on the reverse side from the first surface 21, and a protruding part 25 that protrudes in the first direction from the second surface 22, the protruding part 25 being disposed in a hole edge section of the through-hole 23; the distance between the first surface 21 and the second surface 22 is defined as a first thickness L1 of the flange part 20; the distance between the first surface 21 and the protruding end of the protruding part 25 in a state prior to attachment to the counterpart-side member 1 is defined as a second thickness L2 of the flange part 20; the collar 30 is provided with a third surface 32 that contacts the counterpart-side member 1, and a fourth surface 33 that contacts a seat surface 4A of the bolt 4; the distance between the third surface 32 and the fourth surface 33 is defined as the thickness L3 of the collar 30; the first thickness L1 of the flange part 20 is less than the thickness L3 of the collar 30; and the second thickness L2 of the flange part 20 is greater than the thickness L3 of the collar 30.

Description

connector

The present disclosure relates to a connector.

A shield connector described in Japanese Patent Application Laid-Open No. 2008-41600 (Patent Document 1 below) is conventionally known as a connector that can be attached to an equipment case. This shielded connector includes a housing, and the housing includes a hood portion and a flange protruding from the rear end of the hood portion. A bolt insertion hole is formed in the flange, and a metal collar is fitted into the insertion hole. The housing is attached to the equipment case by inserting a bolt into the metal collar in the insertion hole and screwing it into the screw hole of the equipment case. A mounting groove into which a seal ring is mounted is provided on the surface (rear surface) of the flange facing the equipment case. The seal ring mounted in the mounting groove is compressed between the flange and the equipment case, and prevents water from entering the shield connector from the outside through the mounting surface with the equipment case.

Japanese Patent Application Publication No. 2008-41600

In the above configuration, a clearance is provided between the seating surface of the bolt and the front surface of the flange when the housing is attached to the equipment case. Generally, the coefficient of thermal expansion of a synthetic resin housing is greater than that of a metal collar, so repeated rapid temperature changes in the environment in which the shielded connector is used may cause the metal collar and flange to become loosely bonded. is possible. If the adhesion between the metal collar and flange becomes loose and the flange shifts forward by the amount of clearance above, the seal ring will not be compressed sufficiently by the flange and equipment case, which may reduce the waterproofness of the shield connector. sell.

On the other hand, if no clearance is provided between the seating surface of the bolt and the front surface of the flange, the flange may receive stress from the bolt and be damaged when the housing is attached to the equipment case. Furthermore, due to the difference in thermal expansion coefficient between the housing and the metal collar, the flange may be pressed against the head of the bolt as the temperature rises, potentially damaging the housing.

The connector disclosed herein is a connector that is attached to a mating member from a first direction by fastening a bolt, and a seal ring is disposed between the mating member and the connector, and includes a housing and a metal collar having an insertion hole through which the bolt is inserted, the housing includes a flange portion that faces the mating member in the first direction, and the flange portion has a through hole through which the collar is inserted, the flange portion has a first surface that faces the mating member, a second surface that is in a front-back relationship with the first surface, and a seal ring that protrudes from the second surface in the first direction. a protruding portion that contacts the mating member and a protruding end of the protruding portion, the distance between the first surface and the second surface being a first thickness of the flange portion, the distance between the first surface and the protruding end of the protruding portion before being attached to the mating member being a second thickness of the flange portion, the collar having a third surface that contacts the mating member and a fourth surface that contacts the seat surface of the bolt, the distance between the third surface and the fourth surface being a length of the collar, the first thickness of the flange portion being smaller than the length of the collar, and the second thickness of the flange portion being larger than the length of the collar.

According to the present disclosure, damage to the housing and reduction in waterproofness can be suppressed in the connector.

FIG. 1 is a diagram showing how the connector according to the first embodiment is attached to a mating member. FIG. 2 is a front view of the connector attached to the mating member. FIG. 3 is a cross-sectional view taken along line AA in FIG. FIG. 4 is a sectional view taken along line BB in FIG. FIG. 5 is a sectional view taken along line CC in FIG. FIG. 6 is a cross-sectional view taken along the line CC in FIG. 2, showing a state in which the housing and the collar are applied to a mating member. FIG. 7 is a front view of the housing. FIG. 8 is an enlarged perspective view of the flange portion showing the protrusion. FIG. 9 is a perspective view of the collar.

[Description of embodiments of the present disclosure]
First, embodiments of the present disclosure will be listed and described.

(1) The connector of the present disclosure is a connector that is attached to a mating member from a first direction by fastening a bolt, and in which a seal ring is arranged between the housing and the bolt. a metal collar formed with an insertion hole through which the housing is inserted, the housing includes a flange portion facing the mating member in the first direction, and the collar is inserted into the flange portion. a through hole is formed, and the flange portion is disposed on a first surface facing the counterpart member, a second surface having a front and back relationship with the first surface, and a hole edge of the through hole, a protrusion protruding from the second surface in the first direction; the distance between the first surface and the second surface is a first thickness of the flange portion; The distance between the first surface and the protruding end of the protruding portion in a state before being attached is the second thickness of the flange portion, and the collar has a third surface that contacts the mating member; a fourth surface that contacts the seat surface of the bolt, the distance between the third surface and the fourth surface is the length of the collar, and the first thickness of the flange portion is In the connector, the second thickness of the flange portion is smaller than the length of the collar, and the second thickness of the flange portion is larger than the length of the collar.

According to such a configuration, since the second thickness of the flange portion is larger than the length of the collar, the protruding portion is pressed against and in contact with the seat surface of the bolt after bolt fastening is completed. As a result, no clearance is created between the bolt and the housing, so that movement of the housing in the first direction is suppressed. Therefore, the waterproof property of the seal ring is less likely to deteriorate. In addition, since the first thickness of the flange portion is smaller than the length of the collar, the bearing surface of the bolt does not come into contact with the second surface of the flange portion when bolts are fastened, which prevents damage to the housing. Can be done.

(2) The connector disclosed herein is a connector that is attached to a mating member from a first direction by fastening a bolt, and a seal ring is disposed between the mating member and the connector, and includes a housing and a metal collar having an insertion hole through which the bolt is inserted, the housing includes a flange portion that faces the mating member in the first direction, and the flange portion has a through hole through which the collar is inserted, the flange portion includes a first surface that faces the mating member, a second surface that is in a front-back relationship with the first surface, and a protrusion that is disposed on the edge of the through hole and protrudes from the second surface in the first direction, the collar includes a third surface that contacts the mating member and a fourth surface that contacts the seating surface of the bolt, and when attached to the mating member, the protrusion contacts the seating surface of the bolt, and the second surface does not contact the seating surface of the bolt.

According to such a configuration, when the connector is attached to the mating member, the protrusion is in contact with the seat surface of the bolt, so no clearance is created between the bolt and the housing. Therefore, since the housing is suppressed from moving in the first direction, the waterproof property of the seal ring is less likely to deteriorate. Further, when the connector is attached to the mating member, the second surface does not come into contact with the seating surface of the bolt, so damage to the housing can be suppressed.

(3) In the connector according to (1) or (2), the protrusion includes a plurality of ribs for each of the through holes, and the plurality of ribs are spaced apart from each other at the edge of each of the through holes. It is preferable that they be spaced apart.

According to such a configuration, the protrusion includes a plurality of ribs, and the plurality of ribs are arranged with gaps between them, so when the protrusion is pressed by the seat surface of the bolt, the ribs enter into the gap. can do. Therefore, the protrusion is prevented from being caught between the bolt and the collar.

(4) In the connector according to (1) or (2), the collar includes an inclined portion on an outer circumferential surface on the fourth surface side, and the inclined portion becomes closer to the insertion hole as it approaches the fourth surface. Preferably, it is inclined radially inward.

According to such a configuration, when the protruding part is pressed by the seat surface of the bolt, the protruding part can enter the space between the inclined part and the inner circumferential surface of the through hole. Therefore, the protrusion is prevented from being caught between the bolt and the collar.

[Details of embodiments of the present disclosure]
Embodiments of the present disclosure will be described below. The present disclosure is not limited to these examples, but is indicated by the claims, and is intended to include all changes within the meaning and scope equivalent to the claims.

<Embodiment>
Embodiments of the present disclosure will be described with reference to FIGS. 1 to 9. In the following description, the direction indicated by arrow Z is assumed to be upward, the direction indicated by arrow X is forward, and the direction indicated by arrow Y is defined as left. In this embodiment, the front is an example of the first direction. Note that in the case of a plurality of identical members, only some of the members may be labeled with reference numerals, and the reference numerals of other members may be omitted.

[Matching member]
As shown in Figures 1 and 2, the connector 10 of this embodiment is attached to a mating member 1 from the front by bolt fastening. In this embodiment, the mating member 1 is a battery housing provided on the outside of a battery for a vehicle such as an electric vehicle or a hybrid vehicle. The battery housing is made of metal. The temperature of the battery housing may change suddenly depending on the usage conditions of the vehicle. For simplicity, the drawings show only a portion of the mating member 1 to which the connector 10 is attached.

As shown in FIG. 1, the mating member 1 has a mounting hole 2 and four bolt fastening holes 3 arranged around the mounting hole 2. A main body portion 12 of a housing 11 of a connector 10, which will be described later, is inserted into the attachment hole 2. A female thread is formed on the inner peripheral surface of the bolt fastening hole 3 to which a bolt 4 can be fastened. The bolt fastening hole 3 is provided for attaching the connector 10 to the mating member 1 by bolt fastening.

[Connector, housing]
The connector 10 includes a housing 11 and a metal collar 30. The housing 11 is made of insulating synthetic resin. The housing 11 includes a main body part 12, a hood part 13 continuous to the front of the main body part 12, and a flange part 20 extending outward from the rear end of the hood part 13. A terminal 14 is held in the main body portion 12 . As shown in FIGS. 3 and 4, the front portion of the terminal 14 is provided with a tab portion 14A that is connected to a mating terminal. The rear portion of the terminal 14 is a connecting portion 14B that is connected to an output bus bar inside the battery case by bolting. The hood portion 13 is open to the front, and a tab portion 14A is arranged inside the hood portion 13. The hood portion 13 is adapted to fit into a mating connector.

[Flange part, first thickness of flange part]
The flange portion 20 is a plate-shaped member having a thickness direction in the front-rear direction. When the connector 10 is attached to the mating member 1, the flange portion 20 extends to the outside of the attachment hole 2 and faces the mating member 1 in the front-rear direction. As shown in FIG. 6, the surface of the flange portion 20 that faces the mating member 1 is a first surface 21. A surface of the flange portion 20 opposite to the first surface 21 is a second surface 22 . The distance between the first surface 21 and the second surface 22 is the first thickness L1 of the flange portion 20. As shown in FIG. 7, through holes 23 are formed at the four corners of the flange portion 20, which has a generally rectangular shape when viewed from the front. The through hole 23 has a circular shape.

As shown in FIG. 3, the flange portion 20 is provided with a mounting groove 24 that is recessed rearward from the first surface 21. The mounting groove 24 has an annular shape, and the seal ring 5 is mounted thereon. When the connector 10 is attached to the mating member 1, the seal ring 5 in the mounting groove 24 is compressed between the flange portion 20 and the mating member 1. Thereby, it is possible to prevent water from entering the inside of the connector 10 from the outside through the space between the flange portion 20 and the mating member 1.

[Second thickness of protruding part and flange part]
As shown in FIG. 6, the flange portion 20 includes a protrusion portion 25 that is disposed at the edge of each through hole 23 and protrudes forward from the second surface 22. As shown in FIG. The distance between the first surface 21 and the protruding end of the protruding portion 25 before being attached to the counterpart member 1 is the second thickness L2 of the flange portion 20 . As shown in FIG. 5, the distance between the protrusions 25 in the radial direction of the through hole 23 is smaller than the radial dimension of the seating surface 4A of the bolt 4.

[Multiple ribs, gaps]
As shown in FIGS. 7 and 8, the protrusion 25 includes four ribs 26 for each through hole 23. As shown in FIGS. The rib 26 extends along the edge of the through hole 23. A gap 27 is provided between two adjacent ribs 26 in the circumferential direction of the through hole 23 . As shown in FIG. 6, the cross-sectional shape of the tip of the rib 26 is rounded.

[Collar, insertion hole, collar length]
As shown in Fig. 9, the collar 30 is a cylindrical member made of metal. As shown in Fig. 5, the collar 30 has an insertion hole 31 through which the bolt 4 can be inserted. In this embodiment, the radial dimension of the insertion hole 31 of the collar 30 is set to be slightly larger than the hole diameter of the through hole 23 of the flange portion 20. As a result, the collar 30 is press-fitted into the through hole 23. When the connector 10 is attached to the counterpart member 1, the collar 30 contacts the counterpart member 1 and the seat surface 4A of the bolt 4. In detail, the collar 30 has a third surface 32 that contacts the counterpart member 1 and a fourth surface 33 that contacts the seat surface 4A of the bolt 4. As shown in Fig. 6, the distance between the third surface 32 and the fourth surface 33 is set to be the length L3 of the collar 30.

[First slope part]
The collar 30 includes a first sloped portion 35 (an example of a sloped portion) on an outer circumferential surface 34 of the collar 30 that is disposed on the outside of the insertion hole 31 in the radial direction. The first inclined portion 35 is located at the front portion of the outer circumferential surface 34 of the collar 30. The first inclined portion 35 is located radially inside the insertion hole 31 and is inclined toward the fourth surface 33 side (front side). Further, a second inclined portion 36 is provided on the rear side portion of the outer circumferential surface 34 of the collar 30. As shown in FIG. 6, the second inclined portion 36 is located radially inside the insertion hole 31 and inclined toward the third surface 32 (rear side).

[About attaching the connector to the mating member]
The attachment of the connector 10 to the mating member 1 will be described below.
The collar 30 is press-fitted into the through hole 23 of the flange portion 20 from the second surface 22 side. At this time, the second inclined portion 36 provided on the outer peripheral surface 34 of the collar 30 guides the press-fitting of the collar 30 into the through hole 23 .

With the seal ring 5 mounted in the mounting groove 24 of the flange portion 20, the main body portion 12 is inserted into the mounting hole 2. The bolt fastening hole 3 of the mating member 1 and the insertion hole 31 of the collar 30 are arranged in communication with each other in the front-rear direction.

As shown in FIG. 6, in this embodiment, before the connector 10 is attached to the mating member 1, the second thickness L2 of the flange portion 20 is set to be greater than the length L3 of the collar 30. Furthermore, the first thickness L1 of the flange portion 20 is set to be smaller than the length L3 of the collar 30. Therefore, before the bolts are fastened, with the first surface 21 of the flange portion 20 and the third surface 32 of the collar 30 in contact with the front surface of the mating member 1, the protrusion 25 protrudes forward beyond the fourth surface 33 of the collar 30. Furthermore, the second surface 22 of the flange portion 20 is disposed rearward beyond the fourth surface 33 of the collar 30.

The bolt 4 is inserted into the insertion hole 31 and screwed into the female thread provided on the inner peripheral surface of the bolt fastening hole 3. When the bolt 4 is fastened, the bearing surface 4A of the bolt 4 first comes into contact with the protruding end of the protrusion 25. As the bolt 4 is further tightened, the protrusion 25 is pressed by the seat surface 4A and crushed. Here, since the protrusion 25 of this embodiment includes a plurality of ribs 26 and gaps 27 are provided between adjacent ribs 26, the pressed ribs 26 can enter the gaps 27. . Therefore, the rib 26 (protrusion 25) is prevented from being sandwiched between the seat surface 4A and the fourth surface 33 of the collar 30.

Further, in this embodiment, as shown in FIG. 23A is formed. Therefore, the protrusion 25 pressed against the seat surface 4A can also enter this space 23A. Therefore, the protrusion 25 is prevented from being pinched between the seat surface 4A and the fourth surface 33 of the collar 30.

As the bolt 4 is further tightened, the seat surface 4A comes into contact with the fourth surface 33 of the collar 30. This completes the fastening of the bolt 4. Subsequently, the terminal 14 and the output bus bar of the battery are connected. Through the above steps, attachment of the connector 10 to the mating member 1 is completed.

When the connector 10 is attached (bolted), the protrusion 25 is in contact with the seat surface 4A. In other words, no clearance is formed between the flange portion 20 and the seat surface 4A. Therefore, even if the press-fit state of the collar 30 in the through hole 23 becomes loose due to temperature changes or the like, the flange portion 20 is sandwiched between the seat surface 4A and the mating member 1 and cannot move in the forward/backward direction. Therefore, the flange portion 20 can maintain a state in which the seal ring 5 is appropriately compressed between the flange portion 20 and the mating member 1, so the waterproofing of the connector 10 is less likely to be impaired.

In the present embodiment, since the second surface 22 of the flange portion 20 is disposed rearward than the fourth surface 33 of the collar 30, the seat surface 4A directly contacts the second surface 22 in the process of fastening the bolt 4. Contact is avoided. In addition, since the protrusion 25 is arranged at the edge of the through hole 23 and the part that contacts the seat surface 4A is small, the stress from the seat surface 4A is concentrated on the protrusion 25, and almost only on the protrusion 25. transform. That is, stress from the seat surface 4A is suppressed from damaging the flange portion 20 or other portions of the housing 11 via the protruding portion 25.

[Operations and effects of embodiment]
According to the embodiment, the following actions and effects are achieved.
The connector 10 of the embodiment is attached to a counterpart member 1 from the first direction (front) by fastening a bolt 4, and a seal ring 5 is arranged between the connector 10 and the counterpart member 1, The housing 11 includes a metal collar 30 in which an insertion hole 31 into which the bolt 4 is inserted is formed, and the housing 11 includes a flange portion 20 facing the mating member 1 in the first direction. 20 is formed with a through hole 23 through which the collar 30 is inserted, and the flange portion 20 has a first surface 21 facing the mating member 1, a second surface 22 having a front-back relationship with the first surface 21, A protrusion 25 is provided at the edge of the through hole 23 and protrudes from the second surface 22 in the first direction, and the distance between the first surface 21 and the second surface 22 is equal to The distance between the first surface 21 and the protruding end of the protruding part 25 in the state before being attached to the mating member 1 is the second thickness L2 of the

flange part

20, and 30 includes a third surface 32 that contacts the mating member 1 and a fourth surface 33 that contacts the seat surface 4A of the bolt 4, and the distance between the third surface 32 and the fourth surface 33 is The length of the collar 30 is L3, the first thickness L1 of the flange portion 20 is smaller than the length L3 of the collar 30, and the second thickness L2 of the flange portion 20 is larger than the length L3 of the collar 30. This is the connector 10.

According to such a configuration, since the second thickness L2 of the flange portion 20 is larger than the length L3 of the collar 30, the protruding portion 25 is pressed against and in contact with the seat surface 4A of the bolt 4 after bolt fastening is completed. becomes. As a result, no clearance is created between the bolt 4 and the housing 11, so that movement of the housing 11 in the first direction is suppressed. Therefore, the waterproof property of the seal ring 5 is less likely to deteriorate. Further, since the first thickness L1 of the flange portion 20 is smaller than the length L3 of the collar 30, the bearing surface 4A of the bolt 4 does not come into contact with the second surface 22 of the flange portion 20 when tightening the bolt. Therefore, damage to the housing 11 can be suppressed.

The connector 10 of the embodiment is attached to a mating member 1 from the first direction by fastening a bolt 4, and a seal ring 5 is disposed between the housing 11 and the mating member 1. , a metal collar 30 in which an insertion hole 31 into which the bolt 4 is inserted is formed, the housing 11 includes a flange portion 20 facing the mating member 1 in the first direction, and the flange portion 20 has a , a through hole 23 into which the collar 30 is inserted is formed, and the flange portion 20 has a first surface 21 facing the mating member 1, a second surface 22 that has a front and back relationship with the first surface 21, and a through hole 23. The collar 30 includes a third surface 32 that contacts the mating member 1 and a bearing surface 4A of the bolt 4. When attached to the mating member 1, the protrusion 25 contacts the bearing surface 4A of the bolt 4, and the second surface 22 contacts the bearing surface 4A of the bolt 4. This is the connector 10 that is designed not to

According to such a configuration, when the connector 10 is attached to the mating member 1, the protrusion 25 is in contact with the seating surface 4A of the bolt 4, so no clearance is created between the bolt 4 and the housing 11. Therefore, since the housing 11 is suppressed from moving in the first direction, the waterproof performance of the seal ring 5 is less likely to deteriorate. Further, when the connector 10 is attached to the mating member 1, the second surface 22 does not come into contact with the seating surface 4A of the bolt 4, so damage to the housing 11 can be suppressed.

In the embodiment, the protrusion 25 includes a plurality of ribs 26 for each through hole 23, and the plurality of ribs 26 are arranged at the edge of each through hole 23 with a gap 27 between them.

According to such a configuration, the protrusion 25 includes a plurality of ribs 26, and the plurality of ribs 26 are arranged with gaps 27 between them, so that when the protrusion 25 is pressed by the bearing surface 4A of the bolt 4, , the rib 26 can enter into the gap 27. Therefore, the protrusion 25 is prevented from being caught between the bolt 4 and the collar 30.

In the embodiment, the collar 30 includes a sloped portion (first sloped portion 35) on the outer circumferential surface 34 on the fourth surface 33 side, and the sloped portion extends radially inside the insertion hole 31 as it approaches the fourth surface 33. It is sloping.

According to such a configuration, when the protruding part 25 is pressed by the seat surface 4A of the bolt 4, the protruding part 25 cannot enter the space 23A between the inclined part and the inner peripheral surface of the through hole 23. can. Therefore, the protrusion 25 is prevented from being caught between the bolt 4 and the collar 30.

<Other embodiments>
(1) In the above embodiment, the protruding portion 25 includes four ribs 26 for each through hole 23, but the invention is not limited to this, and the number of ribs provided in each through hole may be changed as appropriate. good.
(2) In the above embodiment, the rib 26 extends along the edge of the through hole 23, but the shape of the rib is not limited to this. For example, the ribs may be hemispherical.

(3) In the above embodiment, the collar 30 was configured to be press-fitted into the through hole 23, but the collar 30 is not limited to this. For example, the collar may be insert molded into the flange portion.
(4) In the above embodiment, the collar 30 includes the first inclined part 35 and the second inclined part 36, but the invention is not limited to this, and one or both of the first inclined part and the second inclined part may be omitted.
(5) In the above embodiment, the counterpart member 1 is a battery case, but it is not limited to this. For example, the counterpart member may be an electrical device.

1: Mating member 2: Mounting hole 3: Bolt fastening hole 4: Bolt 4A: Seat surface 5: Seal ring 10: Connector 11: Housing 12: Main body part 13: Hood part 14: Terminal 14A: Tab part 14B: Connection part 20: Flange portion 21: First surface 22: Second surface 23: Through hole 23A: Space 24: Mounting groove 25: Projecting portion 26: Rib 27: Gap 30: Collar 31: Insertion hole 32: Third surface 33: No. 4th surface 34: Outer peripheral surface 35: First inclined portion 36: Second inclined portion L1: First thickness L2 of flange portion: Second thickness L3 of flange portion: Length of collar

Claims

A connector that is attached to a mating member from a first direction by fastening a bolt, and a seal ring is arranged between the connector and the mating member,
housing and
a metal collar formed with an insertion hole through which the bolt is inserted;
The housing includes a flange portion facing the counterpart member in the first direction,
A through hole through which the collar is inserted is formed in the flange portion,
The flange portion has a first surface facing the counterpart member, a second surface having a front and back relationship with the first surface, and a hole edge of the through hole, and is arranged from the second surface to the first surface. a protrusion protruding in the direction;
The distance between the first surface and the second surface is a first thickness of the flange portion,
The distance between the first surface and the protruding end of the protruding portion in a state before being attached to the counterpart member is a second thickness of the flange portion,
The collar includes a third surface that contacts the mating member, and a fourth surface that contacts the seat surface of the bolt,
The distance between the third surface and the fourth surface is the length of the collar,
The first thickness of the flange portion is smaller than the length of the collar,
The connector, wherein the second thickness of the flange portion is greater than the length of the collar.
A connector that is attached to a mating member from a first direction by fastening a bolt, and a seal ring is arranged between the connector and the mating member,
housing and
a metal collar formed with an insertion hole through which the bolt is inserted;
The housing includes a flange portion facing the counterpart member in the first direction,
A through hole through which the collar is inserted is formed in the flange portion,
The flange portion has a first surface facing the counterpart member, a second surface having a front and back relationship with the first surface, and a hole edge of the through hole, and is arranged from the second surface to the first surface. a protrusion protruding in the direction;
The collar includes a third surface that contacts the mating member, and a fourth surface that contacts the seat surface of the bolt,
When attached to the mating member,
The protruding portion contacts a bearing surface of the bolt,
The connector, wherein the second surface does not come into contact with a seating surface of the bolt.
The protrusion includes a plurality of ribs for each through hole,
3. The connector according to claim 1, wherein the plurality of ribs are spaced apart from each other at the edge of each of the through holes.
The collar includes an inclined portion on the outer circumferential surface on the fourth surface side,
The connector according to claim 1 or 2, wherein the inclined portion is inclined inward in the radial direction of the insertion hole as it approaches the fourth surface.