WO2010027009A1

WO2010027009A1 - Connector

Info

Publication number: WO2010027009A1
Application number: PCT/JP2009/065389
Authority: WO
Inventors: 耕至篠田
Original assignee: 住友電装株式会社; イビデン株式会社
Priority date: 2008-09-04
Filing date: 2009-09-03
Publication date: 2010-03-11
Also published as: JP2010062035A; JP5072781B2

Abstract

A connector formed by integrally combining a connector connecting section and a pipe connecting section is configured compact and facilitates fitting operation. A connector is provided with a pair of pipe connecting sections (10P, 50P) and a pair of connector connecting sections (10C, 50C), the pairs being provided in a first connector housing (10) and a second connector housing (50) and being connected to each other in a main hood (11); a pipe seal member (35) for sealing between the pair of the pipe connecting sections (10P, 50P); a connector seal member (18) for sealing between the pair of connector connecting sections (10C, 50C); and a lever (41) for drawing and fitting to each other the first connector housing (10) and the second connector housing (50) by means of a cam action occurring between a cam pin (52) provided to either the first connector housing (10) or the second connector housing (50) and a cam groove (44) provided in the other.

Description

connector

The present invention relates to a connector in which a connector connecting portion and a pipe connecting portion are assembled together.

Conventionally, a sensor that is attached to an exhaust pipe of an automobile and measures the content of carbon monoxide, nitrogen oxide, or the like in the exhaust gas is known (for example, Patent Document 1). This sensor has a metal case attached to an exhaust pipe, and a lead wire drawn from the case is connected to a sensor driving device via a connector.
JP 2008-3076 A JP 2001-210423 A (Problems to be Solved by the Invention)

Incidentally, there is a demand for the development of a connector in which a connector connecting portion for connecting a connector as described above and a pipe connecting portion for connecting a pipe member such as an exhaust pipe are assembled together. As an example of such a connector, for example, the one described in Patent Document 2 is known.
This connector has a connector connecting portion and a pipe connecting portion that are connected to each other in accordance with the fitting of the connector, and the pipe connecting portion is held by a pipe holding portion that protrudes laterally from the connector connecting portion, There is a problem that it is relatively large.

Therefore, there is a demand to make the connector compact by providing the pipe connecting portion and the connector connecting portion inside the main hood. However, when the pipe connection portion and the connector connection portion are collectively surrounded by the main hood, it is necessary to reliably prevent gas leakage from the pipe connection portion. This is because, for example, when the connector is connected to the exhaust pipe, if exhaust gas leaked from the pipe connection portion stays inside the main hood, it reacts with water to generate sulfuric acid or nitric acid, which may damage the connector connection portion. Because. For this reason, it is necessary to provide a sealing member between the pipe connection portion and the connector connection portion. However, if a seal member is attached to each of the pipe connection portion and the connector connection portion, when the connector is fitted, a large fitting resistance is generated due to the elastic contraction of the seal member, and the connector fitting operation may not be easy. There is.

(Purpose) The present invention has been completed based on the above-described circumstances, and is a connector in which a connector connecting portion and a pipe connecting portion are assembled together, and is a compact and easy fitting operation. The purpose is to provide.
(Means for solving the problem)

The present invention provides a first connector housing having a main hood, a second connector housing fitted in the main hood, the first connector housing and the second connector housing, and connected to each other in the main hood. A pair of pipe connection portions and a pair of connector connection portions; a pipe seal member that seals between the pair of pipe connection portions; a connector seal member that seals between the pair of connector connection portions; and the first connector housing And a lever for pulling and fitting the first connector housing and the second connector housing by a cam action of a cam pin provided on one side of the second connector housing and a cam groove provided on the other side. Have

According to such a configuration, since the pipe connecting portion and the connector connecting portion are provided in the main hood, the connector can be made compact. And between the pipe connection part and between the connector connection part are sealed by the pipe seal member and the connector seal member, respectively, so that gas such as exhaust gas leaks from between the pair of pipe connection parts, and the connector connection. It is possible to prevent adverse effects on the part. Further, by operating the lever, the first connector housing and the second connector housing are attracted and fitted so that the connector can be easily fitted even when the pipe seal member and the connector seal member are provided. Can be combined. That is, according to the configuration of the present invention, a connector in which the connector connecting portion and the pipe connecting portion are assembled together can be a compact connector that can be easily fitted.

When the first connector housing and the second connector housing are fitted to each other, the generation timing of the fitting resistance due to the elastic contraction of the pipe seal member and the elastic contraction of the connector seal member may be different. .
According to such a configuration, since the generation time of the fitting resistance due to the elastic contraction of the pipe seal member and the connector seal member is dispersed, the connector can be easily fitted compared to the case where they occur simultaneously. be able to.

The second connector housing includes a second main hood that surrounds the connector connecting portion and the pipe connecting portion and fits in the main hood, and the pair of connector connecting portions includes one connector connecting portion. It has a sub hood, and the other connector connecting portion is fitted into the sub hood, the one connector connecting portion is provided in the second connector housing, and a part of the sub hood is a part of the second main hood. May be shared. Thereby, a connector can be made further compact.
(The invention's effect)

According to the present invention, a connector in which a connector connecting portion and a pipe connecting portion are integrally assembled can be provided with a compact and easy fitting operation.

Side sectional view showing the state before fitting of the connector according to the present embodiment Front view of first connector housing Rear view Side view Cross-sectional side view Front view of second connector housing Rear view Side view Cross-sectional side view AA sectional view of FIG. Side sectional view showing the state before fitting the connector shallowly and turning the lever Side sectional view showing a state where the lever starts to rotate Side sectional view showing the state of the connector when the lever reaches the final position Side sectional view showing the state where the detection body is pushed in

C ... Connector 10 ... First connector housing 10C ... First connector connection (the other connector connection)
10P ... 1st pipe connection part 11 ... 1st food (main food)
18. Seal ring (connector seal member)
35 ... O-ring (pipe seal member)
41 ... Lever 44 ... Cam groove 50 ... Second connector housing 50C ... Second connector connection (one connector connection)
50P ... second pipe connection 51 ... second hood (second main hood)
52 ... Cam pin 54 ... Sub hood

Embodiments of the present invention will be described below with reference to FIGS.
The connector C in this embodiment includes a first connector housing 10 and a second connector housing 50 that can be fitted to each other. The first connector housing 10 has a first hood 11 (corresponding to the main hood of the present invention), and the second connector housing 50 is fitted inside the first hood 11.

The first connector housing 10 and the second connector housing 50 include a pair of connector connecting portions (first connector connecting portion 10C and second connector connecting portion 50C) that are connected to each other in the first hood 11, and a pair of pipe connecting portions ( 1st pipe connection part 10P and 2nd pipe connection part 50P). Hereinafter, in each component member, the fitting surface side of both

connector housings

10 and 50 will be described as the front side, and the upper side in FIG.

The first connector housing 10 is made of a synthetic resin (heat-resistant resin having a heat resistance of 120 degrees), and the first hood 11 is formed in a substantially square cylindrical shape in the front as shown in FIG. It is open. A pair of shaft projections 12 for assembling a lever 41 described later is provided on both outer side surfaces of the first hood 11 (see FIG. 4). Further, on both side walls of the first hood 11, notches 13 that allow the cam pins 52 provided in the second connector housing 50 to pass are formed.

The first connector housing 10 has a first connector connection portion 10C. The first connector connection portion 10 C is provided in a substantially half portion on the lower side of the first connector housing 10.
The first connector connecting portion 10 C includes a terminal accommodating portion 15 formed integrally with the back wall 14 of the first hood 11. The terminal accommodating portion 15 has a columnar shape with a horizontally long cross-section that can be fitted in a sub hood 54 of a second connector connecting portion 50C described later, and protrudes forward and rearward of the back wall 14. In this terminal accommodating portion 15, four cavities 16 into which the first terminals 20 can be inserted from the rear are formed in two stages, penetrating in the front-rear direction. On the side surface of each cavity 16, a lance 16 A that primarily locks the first terminal 20 extends in a cantilevered manner toward the front (see FIGS. 2 and 3).

A front type retainer 17 is mounted on the front surface side of the terminal accommodating portion 15. The retainer 17 regulates the bending deformation of the lance 16A and also serves to prevent a seal ring 18 that will be described later from coming off. The retainer 17 is made of a heat resistant resin, and is formed in a cap shape that can be attached to the terminal accommodating portion 15 from the front. The retainer 17 has tab insertion openings 17 A that allow the tabs 61 of the second terminals 60 to be inserted at positions corresponding to the cavities 16.
As shown in FIG. 5, the front end position of the first connector connection portion 10 C (the front surface position of the retainer 17 attached to the terminal accommodating portion 15) is arranged behind the front end position of the first hood 11.

The first terminal 20 held by the first connector connection portion 10C is formed by bending a metal plate punched into a predetermined shape, and the tab 61 of the second terminal 60 is inserted and connected to the front end portion thereof. It has a box-shaped terminal connection portion 21. An elastic contact piece 22 that elastically holds the tab 61 is provided inside the terminal connection portion 21, and the elastic contact piece 22 is a piece having a gentle mountain shape from the front end to the rear side of the terminal connection portion 21. A contact portion 22 A that extends in a holding shape and contacts the tab 61 protrudes from the top.

The first terminal 20 includes a barrel portion 23 at the rear end, and the barrel portion 23 is crimped to a rubber plug 24 attached to a terminal portion of each electric wire W. The rubber plug 24 has a plurality of lips 24 A on the inner peripheral surface and the outer peripheral surface thereof, and is accommodated in a portion of each cavity 16 protruding rearward from the rear wall 14 of the first hood 11. The respective cavities 16 are individually sealed by being in close contact with the peripheral surface of the 16.

The first connector connecting portion 10C is sandwiched between the first connector connecting portion 10C and the second connector connecting portion 50C, thereby sealing the two

connector connecting portions

10C and 50C. Corresponding to a connector seal member). The seal ring 18 is fitted to a portion from the front surface of the back wall 14 of the first hood 11 to the rear side of the retainer 17 on the outer peripheral surface of the terminal accommodating portion 15.

The seal ring 18 is formed of an elastic member (for example, rubber) having excellent heat resistance, and has a rectangular tube shape that is open front and rear as a whole, and a plurality of strips that provide a waterproof effect on the inner and outer peripheral surfaces thereof. The lip 18A is provided. In addition, the rear end of the seal ring 18 is provided with an ear portion 18B protruding outward from the lip 18A provided on the outer peripheral surface. The ear portion 18B is connected to the rear wall 14 of the first hood 11 and the second connector. It is sandwiched between the front end of the portion 50C in the front-rear direction.

The first connector housing 10 has a first pipe connection portion 10P. The first pipe connection portion 10 P is provided in the upper half of the first connector housing 10.
The first pipe connection portion 10 P is made of metal, has a substantially cylindrical shape that is long in the front-rear direction as a whole, and is provided in parallel in the width direction of the first connector housing 10. The first pipe connection portions 10P are integrally provided in the first connector housing 10 by insert molding in a posture that penetrates the back wall 14 of the first hood 11 in the front-rear direction.

The portion of the first pipe connection portion 10P that protrudes rearward from the back wall 14 of the first hood 11 is a tube connection portion 32 to which a joint member 31 attached to the end portion of the tube T is connected. The tube connecting portion 32 has an inner diameter that is slightly larger than the portion of the first hood 11 that protrudes forward from the back wall 14 and is thin. The inner peripheral surface of the tube connecting portion 32 is threaded, and a screw shaft portion 31 A provided protruding from the joint member 31 can be screwed. The coupling member 31 is connected to the tube connecting portion 32 by screwing between the screw shaft portion 31A and the tube connecting portion 32, and the tube T and the first pipe connecting portion 10P are held in communication. Each tube connection portion 32 is embedded in the first connector housing 10 except for its rear end. A protrusion 33 is provided on the front side of the tube connection part 32 in the first pipe connection part 10P.

The front end portion of the first pipe connection portion 10P is a first fitting portion 34 that fits inside the second pipe connection portion 50P. The first fitting portion 34 is substantially the front half portion of the first pipe connecting portion 10P protruding forward from the back wall 14 of the first hood 11 (rather than the seal ring 18 attached to the first connector connecting portion 10C). It is formed on the front part), and its outer dimension is slightly smaller than that of the substantially latter half part, making it thin.

The front end position of the first pipe connection portion 10P is arranged at the same position as the position where the front end of the first terminal 20 accommodated in the cavity 16 is arranged behind the front end of the first connector connection portion 10C. ing.

A mounting groove 36 for mounting an O-ring 35 (corresponding to the pipe seal member of the present invention) for sealing between the second pipe connecting portion 50P is formed on the outer peripheral surface of the first fitting portion 34 over the entire circumference. ing. The mounting groove 36 is located slightly rearward of the center position in the front-rear direction of the first fitting portion 34, in other words, the contact portion 22A of the elastic contact piece 22 of the first terminal 20 accommodated in the first connector connection portion 10C. It is arranged in the rear side position.

The O-ring 35 is made of an elastic member having excellent heat resistance, and is elastic to the first pipe connection portion 10P and the second pipe connection portion 50P as the first connector housing 10 and the second connector housing 50 are fitted. By tightly adhering to each other, the space between both

pipe connecting portions

10P and 50P is sealed, and gas such as exhaust gas is prevented from leaking out from both

pipe connecting portions

10P and 50P.

The first connector housing 10 includes a lever 41 that pulls and fits the first connector housing 10 and the second connector housing 50 by the cam action of the cam pin 52 and the cam groove 44.
The lever 41 has a pair of arm portions 42 arranged in contact with both outer side surfaces of the first connector housing 10 and a connecting portion 43 for connecting the pair of arm portions 42, and has a gate shape as a whole. Yes. The pair of arm portions 42 are assembled to the shaft protrusion 12 provided in the first connector housing 10, and the lever 41 is rotatable around the shaft protrusion 12.

A cam groove 44 into which a cam pin 52 provided in the second connector housing 50 is inserted is formed on the inner side surfaces (opposing surfaces) of the pair of arm portions 42. When the lever 41 is in the position before rotation (initial position), the pair of arm portions 42 stands upright at the front end of the first connector housing 10 and the entrance of the cam groove 44 faces forward. As the lever 41 rotates, the cam pin 52 that has entered the entrance of the cam groove 44 moves along the cam groove 44. When the lever 41 reaches a position where the lever 41 finishes rotating (an end position), the pair of arm portions 42 are Lay down.

The connecting portion 43 is provided with a lock arm 45 that extends in a cantilevered direction in the direction of rotation of the lever 41. The lock arm 45 comes into contact with a lock projection 19 described later as the lever 41 rotates, rides on the lock projection 19 while elastically bending the lock arm 45, and when the lever 41 reaches the final position, An engagement portion 45 A is provided that gets over the lock protrusion 19 and engages with the lock protrusion 19. Due to the engagement between the engagement portion 45A and the lock projection 19, both the

connector housings

10 and 50 are locked in a proper fitting state. The lock protrusion 19 is provided at the rear end of the first connector housing 10, and the upper surface of the lock protrusion 19 (the surface on the rear side in the rotation direction of the lever 41) guides the ride-up operation of the engagement portion 45A. It is set as the guide surface 19A.

Further, a detection body 46 is attached to the connecting portion 43. The detection body 46 is attached so as to be slidable along the extending direction of the lock arm 45. Until the lever 41 reaches the final position, the detection body 46 is held at a position (standby position) in which substantially half of the detection body 46 protrudes backward in the rotation direction of the lever 41.

The detection body 46 has a bending piece 47 that forms a cantilever shape. A locking claw 47A is provided at the free end portion of the bending piece 47, and when the locking claw 47A abuts against the engagement portion 45A of the lock arm 45, further pushing is restricted. When the lever 41 reaches the final position and the engaging portion 45A is fitted in the back of the locking projection 19, the locking claw 47A is guided by the guide surface 19A of the locking projection 19 to move the engaging portion 45A. It is possible to get over (see FIG. 13).

The second connector housing 50 is attached to the case K by being fitted into an attachment hole H formed in a metal case K in which a sensor (not shown) is accommodated.
Similar to the first connector housing 10, the second connector housing 50 is made of a heat-resistant synthetic resin, forms a substantially square cylindrical shape slightly smaller than the first hood 11, and opens to the front (the present invention). (Corresponding to the second main hood) (see FIG. 6). Cam pins 52 that fit into the cam grooves 44 of the lever 41 protrude from both outer side surfaces of the second hood 51.

The second connector housing 50 has a second connector connecting portion 50C (corresponding to one connector connecting portion of the present invention). The second connector connection portion 50 C is provided in a substantially half portion on the lower side of the second connector housing 50.

The second connector connecting portion 50 C has a sub hood 54 formed integrally with the back wall 53 of the second hood 51. The sub hood 54 has a horizontally long rectangular tube shape that can be fitted to the outer periphery of the first connector connecting portion 10 C and opens forward, and its front end reaches substantially the same position as the front end of the second hood 51 ( (See FIG. 10). The sub-hood 54 has a shape in which the inner diameter dimension increases in two steps toward the opening end, in other words, a shape in which the thickness dimension (radial dimension) decreases in two steps toward the opening end.

The sub hood 54 shares a part with the second hood 51. Specifically, the lower edge of the upper and lower edges of the sub hood 54 is formed integrally with the lower edge of the upper and lower edges of the second hood 51 (hereinafter formed integrally). The part is referred to as a common part S). The thickness dimension of the shared part S is substantially the same as the other parts of the second hood 51.

A front housing 55 that holds the substantially first half portion of the second terminal 60 is mounted inside the sub hood 54. The front housing 55 is separate from the sub hood 54 and is made of a heat-resistant resin, and the four front cavities 57 into which the second terminals 60 can be inserted from the rear correspond to the cavities 16 of the first connector connecting portion 10C. Formed in position. On the side surface in each front cavity 57, a lance 57A that is locked to the second terminal 60 extends in a cantilevered manner toward the front. Further, the front housing 55 has a front wall portion 55 B that performs the front stop of the second terminal 60 along the inclination of the base portion of the tab 61 of the second terminal 60. The second terminal 60 is held by the front housing 55 with the tab 61 protruding forward.

The front end of the front housing 55 is arranged at a position slightly rearward of the substantially central position in the front-rear direction of the sub hood 54. The tip of the tab 61 of the second terminal 60 protruding from the front housing 55 is disposed at a position that is located rearward from the front end of the sub hood 54 by a dimension equivalent to the protruding dimension of the tab 61.

Further, the second connector connecting portion 50C has a rear housing 56 formed integrally with the back wall 53 so as to protrude rearward from the back wall 53 of the second hood 51. The rear housing 56 is provided with four rear cavities 58 that accommodate substantially the latter half of the second terminal 60.

The second terminal 60 is connected to the first terminal 20 when the first connector housing 10 and the second connector housing 50 are fitted, and is formed by bending a metal plate punched into a predetermined shape. The front end portion is a tab 61 inserted into the terminal connection portion 21 of the first terminal 20. As with the first terminal 20, the second terminal 60 is pressure-bonded to the rubber plug 24 with the barrel portion 62 provided at the rear end attached to the electric wire W, and the rubber plug 24 is accommodated in the rear cavity 58.

The second connector housing 50 has a second pipe connection portion 50P. The second pipe connection portion 50 P is provided in a substantially half portion on the upper side of the second connector housing 50.

The second pipe connecting portion 50P is made of metal and has a substantially cylindrical shape that is long in the front-rear direction as a whole. Is provided. The outer diameter of the second pipe connection portion 50P is substantially constant over the front and rear.

The second pipe connection portion 50P is provided integrally with the second connector housing 50 by insert molding in a posture that penetrates the back wall 53 of the second hood 51 in the front-rear direction. The second pipe connection portion 50 P is embedded in the second connector housing 50 except for a portion protruding rearward from the back wall 53 of the second hood 51. In addition, the second pipe connection portions 50P arranged at both ends in the width direction among the three second pipe connection portions 50P are partially embedded in the second hood 51 (see FIG. 6).

The portion of the second pipe connecting portion 50P that protrudes rearward from the back wall 53 of the second hood 51 is the tube connecting portion 71 into which the joint member 31 attached to the tube T is screwed in, like the first pipe connecting portion 10P. It is said that.

The front end portion of the second pipe connection portion 50P is a second fitting portion 72 that fits outside the first fitting portion 34 of the first pipe connection portion 10P. The 2nd fitting part 72 is formed in the substantially first half part of the part which protruded ahead from the back wall 53 of the 2nd hood 51 among the 2nd pipe connection parts 50P, and an internal diameter dimension is a little large compared with a substantially latter half part, and is thin. It is said that. In addition, the groove part 73 extended in the circumferential direction is formed in the rear side of the 2nd fitting part 72 among the 2nd pipe connection parts 50P.

The front end of the second pipe connection portion 50P is a position in front of the front end of the second connector housing 50 (the front end of the front housing 55) and is more than the front end of the tab 61 of the second terminal 60 protruding from the front housing 55. It has reached a slightly forward position.

The second connector housing 50 has a flange portion 81 arranged along the outer surface of the case K so as to protrude sideways from the entire circumference. The flange portion 81 has a substantially oval plate shape that is long in the lateral direction. The flange portion 81 is provided integrally with the second connector housing 50 at the position of the back wall 53 of the second hood 51. When the second connector housing 50 is attached to the case K, the tube of the second pipe connection portion 50P. The connection portion 71 and the rear housing 56 of the second connector connection portion 50C are arranged so as to protrude inside the case K.

The flange portion 81 is provided with a screw fastening portion 82 for fixing the second connector housing 50 to the case K with screws. A pair of screw fastening portions 82 are provided at both ends of the flange portion 81 in the longitudinal direction.

A seal plate 83 that is in close contact with the case K and the flange portion 81 and seals between them is mounted on the surface (rear surface) of the flange portion 81 that faces the outer surface of the case K. The seal plate 83 is formed of an elastic member (for example, rubber) having excellent heat resistance, and has a substantially rectangular plate shape that is larger than the attachment hole H as a whole and slightly larger than the second hood 51 (see FIG. 7). A lip 83A is formed at the peripheral edge of the seal plate 83, and the lip 83A is formed at a position where the front surface and the rear surface of the seal plate 83 overlap each other in the front and rear directions. The seal plate 83 is fitted in a mounting recess 84 formed on the rear surface of the flange portion 81.

The seal plate 83 includes three pipe through-holes 85 that form a circle along the outer periphery of each second pipe connection portion 50 P, and a housing through-hole 86 that forms a substantially square along the outer periphery of the rear housing 56. Yes.

Further, the seal plate 83 has a pipe fitting portion 87 that protrudes forward from the peripheral portion of the three pipe through holes 85 and is in close contact with the outer periphery of each second pipe connection portion 50P. A plurality of lips 87 A are formed on the surface of the pipe fitting portion 87 that is in close contact with the second pipe connection portion 50 P and the mounting recess 84.

Next, a fitting operation between the first connector housing 10 and the second connector housing 50 will be described.
First, the first connector housing 10 in which the lever 41 is set at the initial position and the detection body 46 is held at the standby position is shallowly fitted into the second connector housing 50 fixed to the case K, and the entrance of the cam groove 44 is set. The cam pin 52 is made to enter. When the lever 41 is rotated, the cam pin 52 is displaced along the cam groove 44 while receiving the lever action of the lever 41, and the fitting of both the

connector housings

10 and 50 proceeds.

Then, the front end of the first connector connection portion 10C reaches the front end of the second terminal 60, and the front end of the first pipe connection portion 10P reaches the front end of the second pipe connection portion 50P (see FIG. 11). Next, the tab 61 of the second terminal 60 passes through the tab insertion port 17A of the retainer 17, and the tip of the sub hood 54 reaches the outer peripheral side of the lip 18A on the front side of the seal ring 18 to press the seal ring 18 inward. Elastically contract (see FIG. 12). At this time, the fitting resistance increases due to the elastic restoring force of the seal ring 18, and reaches a peak when the sub-hood 54 gets over the lip 18A on the near side, and then decreases.

Next, the second pipe connection portion 50P that is externally fitted to the first fitting portion 34 of the first pipe connection portion 10P reaches the outer peripheral side of the O-ring 35, and the O-ring 35 is pressed inward to be elastically contracted. At this time, the fitting resistance increases due to the elastic restoring force of the O-ring 35, reaches a peak when the tip of the second fitting portion 72 gets over the O-ring 35, and then decreases.

Then, when the fitting resistance accompanying the elastic contraction of the O-ring 35 has passed the peak, the tab 61 of the second terminal 60 gets over the contact portion 22A of the elastic contact piece 22. At this time, the fitting resistance caused by the elastic restoring force of the elastic contact piece 22 reaches a peak and then decreases.

Eventually, the lever 41 approaches the final position, and after the engaging portion 45A of the lock arm 45 abuts against the lock protrusion 19, the lever 41 climbs over and engages with the lock protrusion 19, and the first connector housing 10 and the second The connector housing 50 is held so as not to be separated (see FIG. 13). At this time, the tip of the sub hood 54 is in a state where the ear portion 18B of the seal ring 18 is pressed against the back wall 14 of the first hood 11, and the first fitting portion 34 and the second pipe connection of the first pipe connection portion 10P. The second fitting part 72 of the part 50P is properly fitted, the first connector connecting part 10C and the second connector connecting part 50C are normally fitted, and the first terminal 20 and the second terminal 60 are properly connected. Thus, the first connector housing 10 and the second connector housing 50 are in a properly fitted state.

Next, when the operator pushes in the detection body 46, the locking claw 47A of the flexure piece 47 is guided by the guide surface 19A of the locking projection 19 and gets over it, and gets over the engaging portion 45A that is beyond it and is engaged. Engage with the portion 45A (see FIG. 14). Here, when the lever 41 is not rotated to the final position, the engaging portion 45A is on the front side of the locking projection 19, and the locking claw 47A hits the engaging portion 45A and cannot be pushed in. It can be noticed that 41 has not reached the end position. That is, only when the lever 41 is rotated to the final position and the two

connector housings

10 and 50 are properly fitted together, the detection body 46 can be locked. It is held so that it cannot be separated.

According to the present embodiment configured as described above, the following effects can be obtained.
Since the pair of

pipe connection portions

10P and 50P and the pair of

connector connection portions

10C and 50C are provided in the first hood 11, the connector C can be made compact. Since the space between the pair of

pipe connecting portions

10P and 50P and the pair of

connector connecting portions

10C and 50C are sealed by the O-ring 35 and the seal ring 18, respectively, between the

pipe connecting portions

10P and 50P. Gas can be prevented from leaking out and staying in the first hood 11, and the gas can enter the inside (side where the first terminal 20 and the second terminal 60 are accommodated) from between the connector connecting portions 10 C and 50 C. This can be surely prevented. Therefore, even when the connector C is used by being connected to the exhaust pipe, it can be used without any problem.

Then, by operating the lever 41, the first connector housing 10 and the second connector housing 50 are attracted and fitted by the cam action of the cam pin 52 and the cam groove 44. Even if is attached, the connector C can be easily fitted. That is, according to the configuration of the present invention, in the connector C in which the

connector connecting portions

10C and 50C and the

pipe connecting portions

10P and 50P are assembled together, the connector C that is compact and can be easily fitted is realized. Can do.

Furthermore, when the first connector housing 10 and the second connector housing 50 are fitted together, the generation timing of the fitting resistance due to the elastic shrinkage of the O-ring 35 and the elastic shrinkage of the seal ring 18 is set to be different. Therefore, the connector C can be easily fitted compared to the case where they occur simultaneously.

Further, since a part of the sub hood 54 is shared as a part of the second hood 51, the connector C can be made more compact than when the second hood 51 and the sub hood 54 are provided separately.

<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 above embodiment, the lever 41 is a rotary type, but is not limited thereto, and may be a slide type in which the lever is slid.

Claims

A first connector housing having a main hood;
A second connector housing fitted into the main hood;
A pair of pipe connection portions and a pair of connector connection portions provided in the first connector housing and the second connector housing and connected to each other in the main hood;
A pipe seal member for sealing between the pair of pipe connection portions;
A connector seal member for sealing between the pair of connector connecting portions;
A lever for pulling and fitting the first connector housing and the second connector housing by a cam action of a cam pin provided on one of the first connector housing and the second connector housing and a cam groove provided on the other; A connector comprising:
When the first connector housing and the second connector housing are fitted, the fitting resistance due to the elastic contraction of the pipe seal member and the elastic contraction of the connector seal member are different. The connector according to claim 1.
The second connector housing has a second main hood that surrounds the connector connecting portion and the pipe connecting portion and fits in the main hood,
Further, the pair of connector connecting portions, one connector connecting portion has a sub hood, and the other connector connecting portion is fitted in the sub hood,
The said one connector connection part was provided in the said 2nd connector housing, and a part of said subhood was shared with a part of said 2nd main hood, The range of Claim 1 or Claim 2 characterized by the above-mentioned. Connector.