JP6064808B2 - connector - Google Patents

Description

  The present invention relates to a connector that has a terminal integrated by molding and fits into a mating recess.

  Conventionally, as a connector in which terminals are integrally molded, for example, there is one described in Patent Document 1 below. This type of connector has advantages in that the structure can be simplified and the number of parts can be reduced as compared with a connector having a structure in which terminals are assembled to a connector housing.

JP 2002-75557 A

  However, such a terminal-integrated connector is fixed in a state where the terminal does not move at all with respect to the connector housing. Therefore, when the terminal is connected to the mating connection portion, it is generated between the terminal and the mating connection portion. There is a problem that the displacement (tolerance) of the position cannot be absorbed, and a large load stress is applied to the connection portion and the peripheral area.

  In order to solve such a problem, the clearance between the terminal-integrated connector and the mating recess having the mating connecting portion and receiving the connector is increased, and the gap between them is increased. By increasing the thickness of the seal member to be provided, a configuration is conceivable in which a positional deviation between the terminal and the connection portion can be absorbed by the seal member (to ensure alignment of the terminal). However, with such a configuration, the work force required for the fitting work between the connector and the mating fitting recess, that is, the force required to crush the seal member is increased, and the workability during fitting is reduced. There is. In particular, when the connector is shipped as a product, the fitting work with the mating fitting recess is a work performed by the customer, so that the reduction in workability results in a reduction in product value.

  The present invention has been completed based on the above circumstances, and even when a terminal is molded, it is possible to secure an aligning that can absorb a positional shift with the mating connection portion, and It aims at providing the connector which is excellent in workability | operativity at the time of a fitting with the side fitting recessed part.

  The present invention made to solve the above-mentioned problems includes an inner housing having terminals integrated by molding, and an outer housing that accommodates the inner housing therein and that can be fitted in a mating fitting recess. A housing, a first seal ring that is provided between the inner housing and the outer housing so as to be in a liquid-tight state therebetween, and an inner surface of the fitting recess provided on an outer periphery of the outer housing. A second seal ring that is in a liquid-tight state, and a first clearance is provided between the inner housing and the outer housing, and the first seal ring is disposed within the first clearance in the inner housing. And the outer housing has a second clearance between the fitting recess and the outer clearance. The second seal ring is configured to displace the outer housing within the second clearance, and the first clearance is set to be larger than the second clearance. It has a characteristic where it exists.

  According to the above-described present invention, the two clearances, the first clearance provided between the inner housing and the outer housing, and the second clearance provided between the outer housing and the fitting recess, allow the terminal to be Alignment can be secured sufficiently. In addition, the workability at the time of the fitting operation can be improved by providing the clearance in two places as described above. In other words, when a clearance equivalent to the clearance for two locations is to be provided at one location, the seal ring becomes thick and its crushing amount increases, so the connector is fitted in the mating fitting recess. However, a large working force (the force required for crushing the seal ring) is required. However, as in the present invention, the entire clearance is divided into two parts so that a single fitting operation is performed. The work force required for (the work for fitting the inner housing to the outer housing and the work for fitting the outer housing to the mating fitting recess) is small, and the workability is improved.

  Further, when a connector with the inner housing fitted to the outer housing is shipped as a product, the product value is high because the workability at the customer is excellent.

  In the same diameter direction of the first seal ring and the second seal ring, the collapse amount of the first seal ring may be set to be larger than the collapse amount of the second seal ring. In this way, workability at the customer is further improved, and the product value of the connector is further increased.

  It is good also as a structure which provides the control wall which controls the crushing amount of a 2nd seal ring in an outer housing. If it does in this way, it will be prevented that the 2nd seal ring is crushed more than necessary, and alignment can be more fully secured by the 1st seal ring.

  A plurality of inner housings may be accommodated in one outer housing, and the first seal ring may be individually provided in each inner housing. If it does in this way, even if the position of the terminal with respect to each inner housing or the position of the other party connecting part varies, it becomes possible to secure the alignment of the terminal individually.

  Such a connector of the present invention is particularly effective for a connector having a structure in which a terminal is bolted to a mating terminal block. This is because the terminal block generally has low positional accuracy.

  Furthermore, the above configuration is particularly effective when the terminal is an L-shaped terminal bent into an L shape. This is because the L-type terminal is different from the linear type terminal in that it is difficult to assemble the L-type terminal by another assembling configuration such as press fitting to the housing, and the structure of the housing becomes complicated.

  According to the present invention, even when the terminal is molded, it is possible to sufficiently secure the aligning that can absorb the misalignment with the mating connection portion, and at the time of mating with the mating recess on the mating side. A connector with excellent workability can be obtained.

The exploded perspective view of the connector of this embodiment Exploded side view of connector Connector perspective view Top view of connector Connector side view Front view of connector Bottom view of connector AA sectional view of FIG. BB sectional view of FIG. Enlarged sectional view of the main part of the connector (with the inner housing and outer housing arranged coaxially) Enlarged cross-sectional view of the main part of the connector (with the inner housing biased upward) Enlarged sectional view of the main part of the connector (with the inner housing biased downward)

<Embodiment>
A connector 10 of this embodiment will be described with reference to the drawings of FIGS. FIG. 1 is an exploded perspective view of the connector 10 in the present embodiment, and FIG. 2 is an exploded side view. In the following, with reference to FIG. 2, the right side of FIG.

  The connector 10 includes three inner connectors 30 in which the terminals 20 connected to the ends of the electric wires W are molded by the inner housing 31, and an outer housing 50 in which the three inner connectors 30 (inner housings 31) can be accommodated. The first and second shield shells 60 and 65 are assembled from the rear side and the lower side with respect to the inner connector 30 (inner housing 31) and the outer housing 50 that are assembled together.

  The connector 10 is connected to a device such as an inverter for an automobile. As shown in FIG. 8, the device includes a device-side case C that houses a device main body (not shown), a terminal block T that is connected to the device main body, and the like. The device side case C is made of metal and is fixed to the body (not shown) of the automobile. For this reason, the device side case C has a function of electrically connecting the shield shells 60 and 65 to the body while having a function of fixing the connector 10. An attachment hole C1 (an example of a fitting recess) for attaching the connector 10 is formed through the upper end of the device-side case C.

  The terminal 20 is formed by punching and bending a metal plate. The terminal 20 is a so-called L-shaped terminal which is bent into a substantially L shape as a whole, and as shown in FIG. 2, one end side extends in the horizontal direction and a circular hole 21A is formed through the tip. The other end side is a wire-side connection portion 22 having a crimping portion 22A that extends in the vertical direction and can crimp the core wire W1 of the wire W. As shown in FIG. 8, the circular hole 21A is arranged coaxially with the fixing hole T1 formed in the terminal block T, and the connection bolt B is passed through the circular hole 21A and tightened to the fixing hole T1. As a result, the device side connecting portion 21 and the terminal block T are connected so as to be conductive.

  The electric wire W has a known configuration in which the core wire W1 is covered with a coating W2. In the present embodiment, the three electric wires W arranged side by side are collectively covered with a braided wire (not shown). The terminal of the electric wire W is connected to the electric wire side connecting portion 22 of the terminal 20 in a conductive state by caulking the core wire W1 exposed by removing the covering W2 with the crimping portion 22A.

  As shown in FIG. 2, the inner connector 30 includes an inner housing 31 made of a synthetic resin having a substantially L-shaped cross section, in which the terminals 20 electrically connected to the electric wires W are integrally molded by molding. A portion of the inner housing 31 that protrudes to the front side (the right side in FIG. 2) is a fitting protrusion 32 that can be fitted into an outer housing 50 described later. A device-side connecting portion 21 of the terminal 20 protrudes from the distal end side of the fitting protrusion 32. On the other hand, the crimping portion 22 </ b> A of the terminal 20 connected to the electric wire W is molded by the inner housing 31.

  A first holding groove 33 is formed on the outer peripheral surface of the base end portion 38 of the fitting protrusion 32 over the entire circumference. A first seal ring 34 is fitted in the first holding groove 33. When the fitting protrusion 32 of the inner connector 30 (inner housing 31) is fitted into a fitting cylinder 52 of the outer housing 50 described later, the first seal ring 34 is fitted to the bottom 33A of the first holding groove 33 and the fitting cylinder. By being in close contact with both the inner wall of the part 52, the space between the two is made liquid-tight. Further, the distal end side (the right side in FIG. 2) of the fitting protrusion 32 is a reduced diameter portion 36 whose upper surface and lower surface are reduced in diameter in the radial direction from the base end portion 38 with the first stepped portion 35. The upper and lower surfaces of the reduced diameter portion 36 are flat surfaces. The first step portion 35 is an abutting surface to the outer housing 50 described later.

  As shown in FIGS. 2 and 8, the lower end portion of the inner housing 31 that extends downward is a seal ring mounting portion 40 that has a reduced diameter in a step shape. When the third seal ring 41 is mounted on each seal ring mounting portion 40, the third seal ring 41 covers the boundary between the lower end portion of the inner housing 31 and the outer peripheral surface of the electric wire W, and seals the two in a liquid-tight state.

  A substantially cylindrical water stop cap 42 is attached to the outer periphery of the third seal ring 41. The water stop cap 42 locks a locking projection 43 provided slightly above the seal ring mounting portion 40 of the inner housing 31 in a locking hole 42A provided near the upper edge thereof, thereby It is fixed with respect to the housing 31.

  Further, a retainer 44 is attached to the lower side of the water stop cap 42. As shown in FIG. 1, the retainer 44 has a flat and substantially cylindrical shape, and covers the three electric wires W collectively on the lower side of each water stop cap 42 of the three inner connectors 30. The connector 30 is bundled.

  On the other hand, the outer housing 50 is made of synthetic resin, and as shown in FIGS. 1 and 2, the side surface has a substantially L shape and the width is horizontally long. The outer housing 50 opens toward the rear side and the lower side, and the inside thereof is divided into three by a partition wall 51 in the width direction, and the portion protruding to the front side corresponds to each fitting protrusion of the inner connector 30. The part 32 is a fitting cylinder part 52 that can be individually fitted from the rear side. The rear side (left side in FIG. 2) of the inner side of the fitting cylinder part 52 is a large diameter part 52A having a large inner diameter, and the front side (right side in FIG. 2) has a second step part 53 from the large diameter part 52A. The small diameter portion 52B has an inner diameter reduced in the vertical direction. The upper and lower inner surfaces of the small diameter portion 52 </ b> B are flat surfaces that can face the flat reduced diameter portion 36 of the fitting protrusion 32. The second stepped portion 53 is a receiving surface that receives the first stepped portion 35 of the inner housing 31. Further, the front wall of the outer housing 50 has an insertion hole 58 through which the device-side connecting portion 21 of the terminal 20 protruding forward from the inner connector 30 fitted in the fitting cylinder portion 52 can be inserted. Three are provided.

  The three fitting cylindrical portions 52 of the outer housing 50 are collectively surrounded by a peripheral wall 55, and a second holding groove 57 for mounting the second seal ring 56 is provided on the outer peripheral surface of the peripheral wall 55. Has been. The second seal ring 56 mounted in the second holding groove 57 is made of the same material as the first seal ring, and is in close contact with the mounting hole C1 (an example of a fitting recess) of the case C of the device. The space between the mounting hole C1 of the case C and the outer housing 50 is set in a liquid-tight state. Both side walls 57 </ b> A of the second holding groove 57 act as a regulating wall that regulates the amount of collapse of the second seal ring 56. The upper surface of the outer housing 50 has a stepped shape with a third stepped portion 59 at the base end portion of the peripheral wall 55 that has a lower step on the front side, and the third stepped portion 59 abuts against the device side case C of the device. It is considered as a surface.

  Now, the outer diameter of the fitting protrusion 32 of the inner housing 31 is set smaller than the inner diameter of the fitting cylindrical portion 52 of the outer housing 50 that fits the fitting protrusion 32 therein. Here, FIG. 10 shows a state in which the inner housing 31 and the outer housing 50 are arranged on the same axis, and the base end portion of the fitting protrusion 32 will be described in more detail with reference to FIG. The outer diameter of 38 is set smaller than the inner diameter of the large-diameter portion 52A of the fitting cylinder portion 52, and a first clearance d1 is provided between them (twice d1 / 2 in FIG. 10). Further, the outer diameter of the reduced diameter portion 36 of the fitting protrusion 32 is set smaller than the inner diameter of the small diameter portion 52B of the fitting cylindrical portion 52, and a clearance d2 is provided between them (FIG. 10). D2 / 2 of 2). In the present embodiment, the first clearance d1 is set equal to the clearance d2.

  The thickness of the first seal ring 34 is set to a thickness that can absorb the first clearance d1 in a state where the first seal ring 34 is fitted in the first holding groove 33. Thus, for example, as shown in FIG. 11 or FIG. 12, even when the fitting protrusion 32 of the inner housing 31 is arranged most biased in the fitting cylinder portion 52 of the outer housing 50, the first seal ring 34 is The first clearance d1 can be squeezed with a squeezable amount P1 and can be held in a liquid-tight state over the entire circumference. In other words, the inner housing 31 is displaceable within the first clearance d1, so that the device-side connection portion 21 of the terminal 20 has an alignment equivalent to the first clearance d1 with respect to the outer housing 50. Secured.

  On the other hand, the outer diameter of the peripheral wall 55 of the outer housing 50 is set to be slightly smaller than the inner diameter of the mounting hole C1 of the case C. Similarly, with reference to FIG. 10, the outer diameter of the peripheral wall 55 is set slightly smaller than the inner diameter of the mounting hole C1 of the case, and a second clearance D is provided between them (FIG. 10). Of D / 2). The second clearance D is set in advance so as to be smaller than the first clearance d1.

  The thickness of the second seal ring 56 is set to a thickness that can absorb the second clearance D in a state where the second seal ring 56 is fitted in the second holding groove 57. As a result, even when the peripheral wall 55 is arranged most unevenly in the mounting hole C1, the second seal ring 56 is crushed with a crushing amount P2 that can absorb the second clearance D, and the two can be held in a liquid-tight state. is there. In other words, the peripheral wall 55 of the outer housing 50 is displaceable within the second clearance D, whereby the device-side connecting portion 21 of the terminal 20 is first with respect to the mounting hole C1 of the device-side case C. An alignment equivalent to the sum (d1 + D) of the clearance d1 and the second clearance D is secured. Further, the collapse amount P2 of the second seal ring 56 in the assembled state of the device side case C and the connector 10 is set in advance so as to be smaller than the collapse amount P1 of the first seal ring 34 in the same radial direction.

  The shield shell is made of metal, and is configured by assembling the first shield shell 60 and the second shield shell 65 together as shown in FIGS. 1 and 8. The first shield shell 60 has a box shape with an opening at the front and the bottom, and is assembled to the rear side of the inner connector 30 and the outer housing 50 in a state of being assembled with each other. On the other hand, the second shield shell 65 includes a cylindrical portion 66 that has a flat and substantially cylindrical shape and covers the outer periphery of the retainer 44, and a vertical portion 67 that covers the lower side of the outer housing 50 in the front surface of the connector 10.

  Further, a caulking ring 45 for caulking a braided wire (not shown) to the cylindrical portion 66 is attached to the outer peripheral surface of the cylindrical portion 66 of the second shield shell 65. Thereby, the braided wire and the first shield shell 60, the second shield shell 65, and the device side case C form a shield conductive path formed by collectively shielding a plurality of electric wires W.

  The present embodiment is configured as described above, and its operation will be described subsequently. First, a method for assembling the connector 10 will be briefly described. As shown in FIG. 2, when connecting the terminal 20 and the electric wire W, the core wire W1 is exposed by removing the covering W2 at the end of the electric wire W, and the core wire W1 is connected by crimping at the crimping portion 22A. To do.

  Next, the portion having the coating W2 of the electric wire W, the crimping portion 22A, and the proximal end side of the device side connection portion 21 are set in the molding space of a molding die (not shown), and the die is molded. The inner housing 31 is formed by closing and injecting molten resin. When the molten resin cools and hardens, the molding of the inner housing 31 is completed by removing the mold from the mold. Next, the first seal ring 34 is fitted into the first holding groove 33 of the fitting protrusion 32. Further, the third seal ring 41 is attached to the seal ring attaching portion 40, and the water stop cap 42 is attached to the outer periphery of the third seal ring 41 to complete the inner connector 30.

  Next, the fitting protrusions 32 of the three inner connectors 30 (inner housing 31) are fitted into the three fitting cylinders 52 of the outer housing 50, and the inner connector 30 and the outer housing 50 are assembled. To do. At this time, the first step portion 35 (abutting surface) of the fitting protrusion 32 abuts on the second step portion 53 (receiving surface) of the fitting cylinder portion 52, so that the inner connector 30 is attached to the outer housing 50. The fitting operation is restricted, and both are brought into a normal fitting state. Further, the first seal ring 34 is in close contact with the inner surface of the large-diameter portion 52A of the fitting cylinder portion 52 so that the space between the inner housing 31 and the outer housing 50 is in a liquid-tight state.

  In the state where the inner connector 30 and the outer housing 50 are assembled in this way, the first clearance d1 is provided between the proximal end portion 38 of the fitting tube portion 52 and the large diameter portion 52A of the fitting tube portion 52. Is provided. Further, the entire first seal ring 34 has the same crushing amount P1 in the circumferential direction. Further, a clearance d2 equal to or smaller than the first clearance d1 is provided between the reduced diameter portion 36 of the fitting protrusion 32 and the small diameter portion 52B of the fitting cylinder portion 52.

  Next, the retainer 44 bundles the three electric wires W, attaches the second shield shell 65 to the outer periphery thereof, and crimps the braided wire (not shown) on the cylindrical portion 66 of the second shield shell 65. The braided wire is connected to the second shield shell 65 by caulking with the ring 45. Finally, the connector 10 is completed by assembling the first shield shell.

  Such a connector 10 is fitted into the mounting hole C1 of the device side case C. At this time, the third stepped portion 59 (abutting surface) of the outer housing 50 comes into contact with the peripheral edge portion (receiving surface) of the mounting hole C1 of the device-side case C, so that both are brought into a normal fitting state. Further, the second seal ring 56 is in close contact with the inner wall of the mounting hole C1, and a liquid-tight state is established between the connector 10 and the device side case C (mounting hole C1).

  Thus, in the state where the connector 10 is fitted to the device side case C, a second clearance D is provided between the peripheral wall 55 and the mounting hole C1. Further, the entire second seal ring 56 has the same crushing amount P2 in the circumferential direction. The collapse amount P2 of the second seal ring 56 is set in advance so as to be smaller than the collapse amount P1 of the first seal ring 34.

  In such a fitting state, the device-side connection portion 21 of the terminal 20 is disposed inside the device-side case C and is placed on the upper surface of the terminal block T. Therefore, the device-side connection portion 21 and the terminal block T can be electrically connected by passing the connection bolt B through the circular hole 21A of the device-side connection portion 21 and the fixing hole T1 of the terminal block T disposed below and tightening the connection bolt B. Connect to. Thus, the connector 10 is fixed to the device side case C and is shield-connected.

  At this time, since the positional accuracy of the terminal block T is generally low, a load is applied to the terminal 20 connected to the terminal block T and the peripheral portion of the terminal 20, and stress may be generated. However, according to the connector 10 of the present embodiment, the terminal 20 is fixed to the inner housing 31 in a stationary state, but the clearance d1 is provided between the inner housing 31 and the outer housing 50, and the first One seal ring 34 can displace the inner housing 31 within the first clearance d1. In addition, a clearance D is provided between the outer housing 50 and the mounting hole C1, and the second seal ring 56 can displace the outer housing 50 within the second clearance D. That is, the terminal 20 has an alignment equivalent to the sum (d1 + D) of the first clearance d1 and the second clearance D. Therefore, a large load is not applied to the terminal 20 connected to the terminal block T and the peripheral portion of the terminal 20.

  At this time, the crushing amount P2 of the second seal ring 56 is restricted by the side walls 57A of the second holding groove 57, and the crushing amount P2 is smaller than the crushing amount P1 of the first seal ring 34 in the same radial direction. It has become.

  As described above, in the present embodiment, the alignment of the terminal 20 can be sufficiently ensured by the two clearances of the first clearance d1 and the second clearance D. Moreover, since the clearance is provided in two places in this way, the fitting operation of fitting the inner housing 31 into the outer housing 50 and the outer housing 50 in the mounting hole C1 of the device side case C are performed. The force required for the fitting operation (the force required to crush the first seal ring 34 and the second seal ring 56) is small, and the workability is excellent. In particular, since the collapse amount P1 of the first seal ring 34 is set so as to be larger than the collapse amount P2 of the second seal ring 56 in the same radial direction, The force required for the fitting operation to the device side case C is small, and the product value of the connector 10 is increased.

Further, since the second seal ring 56 is configured to be fitted in the second holding groove 57 provided in the outer housing 50, the second seal ring 56 is prevented from being excessively crushed. In addition, since the first seal rings 34 are provided on the outer circumferences of the three inner housings 31, even if the position of the terminal 20 or the position of the terminal block T with respect to each inner housing 31 is different, each terminal Twenty alignments can be secured individually.
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the embodiment described above, the collapse amount P1 of the first seal ring 34 is set to be larger than the collapse amount P2 of the second seal ring 56 in the same radial direction. The collapse amount P2 of the ring 56 may be set to be larger than the collapse amount P1 of the first seal ring 34 in the same radial direction.

  (2) In the above embodiment, the second holding groove 57 is provided in the peripheral wall 55 and the second seal ring 56 is fitted into the second holding groove 57. It is also possible to provide a configuration in which a restriction wall is provided so as to extend to the second seal ring 56 next to the restriction wall.

  (3) Although the inner housing 31 is assembled to the outer housing 50 by fitting the three fitting protrusions 32 into the three fitting cylinders 52 provided in the peripheral wall 55 in the above embodiment, The fitting projection 32 may be a single fitting projection configured integrally without being divided, and may be a single fitting tube portion configured integrally without partitioning each fitting tube portion 52. .

  (4) In the above embodiment, the first seal ring 34 and the second seal ring 56 are made of the same material, but different materials may be used.

  (5) Although the connector 10 including the shield shells 60 and 65 is used in the above embodiment, the present invention may be applied to a connector that does not include the shield shells 60 and 65.

  (6) In the above embodiment, the connector 10 is bolted to the fixing hole T1 of the terminal block T by the connection bolt B. However, the connector 10 may be applied to a connector to be connected to a general female terminal.

  (7) Further, the shape of the terminal is not limited to the L-type terminal, but can be applied to a linear terminal.

  (8) In the above embodiment, the fitting protrusion 32 and the fitting cylinder part 53 have a two-stage shape, and the first seal ring 34 is fitted to the base end part 38 of the fitting protrusion 32. According to the present invention, the fitting protrusion 32 and the fitting cylinder 53 are not limited to the two-stage shape. Further, the position where the first seal ring is provided is not limited to the above embodiment.

  (9) Regarding the clearance between the fitting protrusion 32 and the fitting cylinder portion 53, in the above embodiment, the clearance d1 between the base end portion 38 and the large diameter portion 52A is set to the reduced diameter portion 36 and the small diameter portion 52B. The clearance is equal to the clearance d2 (d1 = d2), but d1> d2 or d1 <d2 may be satisfied. In short, the first seal provided between the fitting protrusion 32 and the fitting cylinder portion 53 is used. The ring 34 may be set to a thickness that can absorb the clearance.

10 ... Connector 20 ... Terminal (L-type terminal)
DESCRIPTION OF SYMBOLS 21 ... Equipment side connection part 30 ... Inner connector 31 ... Inner housing 32 ... Fitting protrusion 33 ... 1st holding groove 34 ... 1st seal ring 50 ... Outer housing 52 ... Fitting cylinder part 56 ... 2nd seal ring 57 ... Second holding groove 57A ... side wall (regulatory wall)
60 ... 1st shield shell 65 ... 2nd shield shell W ... Electric wire C ... Equipment side case C1 ... Mounting hole (fitting recess)
T ... Terminal block B ... Connection bolt d1 ... First clearance D ... Second clearance P1 ... First seal ring collapse amount P2 ... Second seal ring collapse amount

Claims (6)

An inner housing having terminals integrated by molding;
While housing the inner housing inside, an outer housing that can be fitted in the mating fitting recess,
A first seal ring that is provided between the inner housing and the outer housing and is in a liquid-tight state therebetween;
A second seal ring provided on the outer periphery of the outer housing and in a liquid-tight state between the inner surface of the fitting recess,
A first clearance is provided between the inner housing and the outer housing, and the first seal ring displaces the inner housing within the first clearance.
The outer housing is set to have a second clearance with the fitting recess, and the second seal ring is capable of displacing the outer housing within the second clearance,
The connector is characterized in that the first clearance is set to be larger than the second clearance. The collapsing amount of the first seal ring is set to be larger than the collapsing amount of the second seal ring in the same radial direction of the first seal ring and the second seal ring. The connector according to claim 1 . The connector according to claim 1, wherein the outer housing is provided with a restriction wall that restricts a collapse amount of the second seal ring. The plurality of inner housings are accommodated in one outer housing, and the first seal ring is individually provided in each inner housing. Connector described in. The connector according to claim 1, wherein the terminal is a male terminal and is bolted to a mating terminal block. The connector according to any one of claims 1 to 5, wherein the terminal is an L-shaped terminal bent in an L shape.

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