JP2020061287A - Connector connection structure and device composite body - Google Patents

Abstract

To provide a connector connection structure capable of suppressing the number of components, enlargement of an apparatus having an oil inclusion case, and the number of electric connection points, while preventing liquid leakage or the like from a liquid inclusion case, and provide a device composite body.SOLUTION: A connector connection structure 1 comprises: an AT connector 100 (a first connector), an ECU connector 200 (a second connector), a cylindrical wall 11b which is built around an opening 11a of an AT case 11 (a liquid inclusion case); a terminal sealing member 230 that seals a space between an ECU side housing (a second housing) and a male type terminals 220 (a second terminal); and an ECU connector/case sealing member 240 (a second connector/case sealing member) that is sandwiched between an outer peripheral surface of a bottomed cylindrical part 212 of the ECU connector 200 (the second connector) and an inner peripheral surface of the cylindrical wall 11b of the AT case 11 (the liquid inclusion case) to seal a space between them.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a connector connection structure for electrically connecting an internal device of a liquid-filled case to an external device, and a device composite body in which two devices are connected via such a connector connection structure. .

  Conventionally, in an automatic transmission of a vehicle, in many cases, an oil for lubricating a transmission is enclosed in a case together with internal devices such as a transmission and various sensors. The automatic transmission is connected to an external device such as a control device and receives its operation control. Then, a connector connection structure has been proposed for electrically connecting the internal device of the automatic transmission to the external device while preventing oil leakage from the case (for example, see Patent Document 1).

  In the connector connection structure described in Patent Document 1, a connector provided at an end of an electric wire from an internal device and a connector fixed to a case of an external device are provided as a relay connector fixed to a case of an automatic transmission. It is supposed to be connected through. The relay connector is provided with various sealing materials to prevent oil leakage of the automatic transmission and intrusion of water or the like into the automatic transmission and the control device from the outside.

JP-A-11-111382

  Here, in the above-mentioned connector connection structure using the relay connector, there is room for improvement in terms of a large number of parts, a large automatic transmission, a large number of electrical connection points, and the like.

  Heretofore, the situation in which there is room for various improvements has been described by taking as an example the connector connection structure for the automatic transmission in which the case is filled with oil. However, such a situation is not limited to the connector connection structure for the automatic transmission, and may generally occur if the connector connection structure is for electrically connecting the internal device of the liquid-filled case to the external device.

  Therefore, the present invention pays attention to the room for improvement as described above, and while preventing liquid leakage of the liquid-filled case and the like, the number of components, the size of the device having the liquid-filled case, and the number of electrical connection points are increased. An object of the present invention is to provide a connector connection structure and a device composite body that can suppress the

  In order to solve the above problems, a first connector connection structure of the present invention is a connector connection for electrically connecting an internal device housed together with a liquid in a liquid-filled case having an opening to an external device. A first housing provided at an end of an electric wire from the internal device in a first housing fixed to the liquid-filled case so as to close the opening by projecting a fitting convex portion from the opening. The first connector in which the terminal is accommodated so as to be connectable from the end face side of the fitting convex portion, the second housing provided with the bottomed tubular portion that receives the fitting convex portion inside, the bottomed tubular portion A second connector provided with a second terminal electrically connected to the external device so that a connection end portion connectable to the first terminal protrudes from the bottom surface of the opening, and the periphery of the opening in the liquid sealing case Around the A tubular wall for accommodating the bottomed tubular portion inside, a terminal sealing material for sealing between the first housing and the first terminal, or between the second housing and the second terminal, and A second connector / case-sealing member that is sandwiched between the outer peripheral surface of the bottomed tubular portion of the second connector and the inner peripheral surface of the tubular wall of the liquid-filled case to seal the two. It is characterized by

  In order to solve the above-mentioned problem, the second connector connection structure of the present invention is for electrically connecting an internal device housed together with a liquid in a liquid sealing case having an opening to an external device. In the connector connection structure, a flange having a diameter larger than that of the opening is fixed to the liquid-filled case so as to close the opening by projecting a fitting projection from the opening in a state of overlapping with the periphery of the opening. A first connector, in which a first terminal provided at an end of an electric wire from the internal device is accommodated in the first housing so as to be connectable from an end face side of the fitting protrusion, and the fitting protrusion is received inside. The second housing provided with the bottomed tubular portion was electrically connected to the external device such that a connection end portion connectable to the first terminal was projected from the bottom surface of the bottomed tubular portion. A second connector provided with a second terminal, A terminal sealing material that seals between the first housing and the first terminal or between the second housing and the second terminal, the periphery of the opening in the liquid sealing case, and the first housing. A first connector / case sealing material that is sandwiched between a flange and seals between the two, and is sandwiched between the flange of the first housing and the tip edge of the bottomed tubular portion of the second housing between the two. And a connector-to-connector sealant for sealing.

  Further, in order to solve the above-mentioned problems, a device complex of the present invention is provided as a first device having a liquid sealing case for accommodating an internal device together with a liquid, and an external device for the internal device in the first device. No. 2 device of the above, and the internal device is electrically connected to the second device by the above-mentioned first connector connection structure or second connector connection structure.

  According to the first connector connection structure of the present invention, since the first connector is a connector directly connected to the internal device, a relay connector is not necessary, and the number of components and the liquid sealing case are correspondingly increased. It is possible to suppress the increase in size and the number of electrical connection points. Then, the terminal sealing material can prevent leakage of liquid that propagates through the terminals of the two connectors. Further, the second connector / case sealing material can prevent liquid leakage from the liquid sealing case and intrusion of water or the like from the outside. As described above, according to the first connector connection structure of the present invention, the number of components, the size of a device having a liquid sealing case, and the electrical connection are prevented while preventing liquid leakage of the liquid sealing case. The number of points can be suppressed.

  Further, the second connector connection structure of the present invention also does not require a relay connector, and can reduce the number of parts, the size of a device having a liquid sealing case, and the number of electrical connection points. Liquid leakage from the liquid-filled case and intrusion of water or the like from the outside can be prevented by the terminal sealing material, the first connector / case sealing material, and the connector sealing material. As described above, according to the second connector connection structure of the present invention as well, while preventing liquid leakage of the liquid sealing case, the number of components, the size of the device having the liquid sealing case, and the electrical connection point are increased. The number of can be suppressed.

  Further, according to the apparatus composite body of the present invention, since the above-described first connector connection structure and second connector connection structure are adopted, the number of parts, the liquid, and the like can be prevented while preventing liquid leakage of the liquid sealing case. It is possible to suppress an increase in the size of a device having an enclosure case and the number of electrical connection points.

FIG. 1 is a schematic diagram showing an AT / ECU composite body according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the connector connection structure shown in FIG. 1. FIG. 2 is a schematic cross-sectional view showing the connector connection structure shown in FIG. 1. It is a figure which shows the comparative example with respect to the connector connection structure shown by FIGS. It is a typical sectional view showing the connector connection structure concerning a 2nd embodiment of the present invention.

  Hereinafter, an embodiment of the present invention will be described. First, the first embodiment will be described.

  FIG. 1 is a schematic diagram showing an AT / ECU complex according to a first embodiment of the present invention.

  The AT / ECU complex 30 (device complex) includes an automatic transmission (AT) 10 (first device) of a vehicle, an ECU (Engine Control Unit) 20 (second device) that is a control device, and Is equipped with. The AT 10 is an AT case 11 (liquid filled case) in which oil for lubricating the transmission is sealed together with internal devices such as the transmission and various sensors. The AT 10 and the ECU 20 are electrically connected to each other by the connector connection structure 1. The connector connection structure 1 includes an AT connector 100 (first connector) and an ECU connector 200 (second connector). The AT connector 100 is fixed to the AT case 11, the ECU connector 200 is fixed to the ECU case 21, and is connected to the AT connector 100. In the present embodiment, the ECU connector 200 is connected to the AT case 100 together with the ECU case 21 to which the ECU connector 200 is fixed in the connection direction D11 in the drawing. This connection is removable.

  FIG. 2 is an exploded perspective view of the connector connection structure shown in FIG. 3 is a schematic cross-sectional view showing the connector connection structure shown in FIG.

  The AT connector 100 is provided at the end of the electric wire 130 from the internal equipment of the AT case 11 and fixed to the AT case 11. The AT case 11 is provided with an opening 11a, and the AT connector 100 is fixed so as to penetrate and close the opening 11a in a state where a fitting convex portion 112 described later is projected from the opening 11a. On the other hand, the ECU connector 200 is connected to a circuit board built in the ECU 20 and fixed to the ECU case 21 of the ECU 20. The ECU case 21 is also provided with an opening 21a, and the ECU connector 200 is fixed so as to penetrate and close the opening 21a.

  Here, in the exploded perspective view of the connector connection structure 1 of FIG. 2, the AT connector 100 is illustrated as being inserted from the inside of the AT case 11 into the opening 11a and attached in order to make the drawing easy to see. However, in reality, as shown in FIG. 3, the AT connector 100 is inserted and attached from the outside of the AT case 11 into the opening 11a. The AT connector 100 is provided with a flange 114 for fixing the AT connector 100 to the AT case 11. The flange 114 has a larger diameter than the opening 11a. When mounting the AT connector 100, the AT connector 100 is fixed to the AT case 11 by projecting the fitting projection 112 from the opening 11a in a state where the flange 114 overlaps the periphery of the opening 11a in the AT case 11. The AT connector 100 is attached by being inserted into the opening 11a from the outside of the AT case 11. On the other hand, the ECU connector 200 is attached by being inserted into the opening 21a from the inside of the ECU case 21, as shown in both FIG. 2 and FIG.

  The AT connector 100 includes a plurality of female-type terminals, each of which is crimped to an end portion of an electric wire 130 in a plurality of terminal housing chambers 111 provided in an AT-side housing 110 (first housing) fixed to an AT case 11 of the AT 10. The female connector accommodates the terminal 120 (first terminal). The AT-side housing 110 is provided with a fitting projection 112 that is a portion of the AT connector 100 that enters the ECU connector 200. On the fitting end surface 112a of the fitting convex portion 112 on the ECU connector 200 side, a terminal insertion port 112b for the female terminal 120 is opened in communication with the terminal accommodating chamber 111. The female terminal 120 is housed in the terminal housing chamber 111 via the terminal insertion port 112b so as to be connectable from the fitting end surface 112a side of the fitting convex portion 112.

  Further, in the AT-side housing 110, the above-mentioned fitting convex portion 112 projects outside from the opening 11a of the AT case 11, and the other portion 113 enters the AT case 11, so that the AT connector 100 is attached to the AT case 11. A flange 114 for fixing is provided. Then, the AT connector 100 is inserted into the opening 11a from the outside of the AT case 11, and the flange 114 abuts and is fixed around the opening 11a.

  In the ECU connector 200, a plurality of male terminals 220 (second terminals), each of which is pin-shaped and is connectable to the female terminal 120 in the connection direction D11, are housed in the ECU-side housing 210 (second housing). It is a male connector. The ECU-side housing 210 can be fitted to the AT-side housing 110 in the connection direction D11 and is fixed to the ECU case 21. The ECU-side housing 210 is provided with a fitting recess 211 that can be fitted to the fitting projection 112 of the AT connector 100. A pin-shaped male terminal 220 is attached through the bottom wall 213 of the fitting recess 211. The connection end of the male terminal 220 projects from the bottom surface 213a of the bottom wall 213 that faces the inside of the fitting recess 211. The male terminal 220 is electrically connected to the ECU 20, which is an external device, by soldering the side opposite to the connection end of the male terminal 220 to a circuit board (not shown) inside the ECU 20. When the fitting protrusion 112 of the AT connector 100 enters the fitting recess 211 of the ECU connector 200, the connection end of the male terminal 220 enters from the terminal insertion port 112b of the fitting end surface 112a of the fitting protrusion 112. To the female terminal 120.

  Similarly to the AT-side housing 110, the ECU-side housing 210 is also provided with a flange 214 for fixing to the ECU case 21. The flange 214 has a larger diameter than the opening 21a. When attaching the ECU connector 200, the flange 214 is overlapped around the opening 21a in the ECU case 21. Then, the ECU connector 200 is fixed to the ECU case 21 by projecting the bottomed tubular portion 212 having the fitting concave portion 211 inside from the opening 21a. The ECU connector 200 is inserted into the opening 21a from the inside of the ECU case 21, and the flange 214 is fixed around the opening 21a.

  Further, in the present embodiment, the AT case 11 is provided with a tubular wall 11b that is erected around the periphery of the opening 11a and that houses the bottomed tubular portion 212 of the ECU connector 200 inside.

  When the AT connector 100 and the ECU connector 200 are connected, the fitting convex portion 112 of the AT connector 100 enters the fitting concave portion 211 of the bottomed tubular portion 212 of the ECU connector 200, and the bottomed tubular portion 212 is Enter the tubular wall 11b of the AT case 11.

  Here, in the connector connection structure 1 of the present embodiment, a terminal sealing material 230 and an ECU connector / case sealing material 240 (second connector / case sealing material) described below are provided.

  The terminal sealing material 230 seals between the ECU-side housing 210 and the male terminal 220. The terminal sealing material 230 is a filling material filled in a space 215 on the opposite side of the fitting recess 211 with the bottom wall 213 sandwiched between the ECU side housing 210.

  In the present embodiment, a part of the oil that has flowed through the female terminal 120 to the mating end surface 112a as indicated by the arrow D13 is further connected to the male terminal as indicated by the arrow D16. There is a possibility that it may flow through 220 into the inside of the ECU connector 200. The terminal sealing material 230 has a function of blocking the progress of the oil flowing along the male terminal 220 in this manner.

  The ECU connector / case sealing material 240 is a packing that is sandwiched between the outer peripheral surface of the bottomed tubular portion 212 of the ECU connector 200 and the inner peripheral surface of the tubular wall 11b of the AT case 11 to seal the two. The ECU connector / case sealing material 240 is fitted into a holding groove 212a formed on the outer peripheral surface of the bottomed tubular portion 212.

  The ECU connector / case sealing material 240 allows the oil flowing from the inside of the AT case 11 through the gap between the opening 11a and the AT connector 100 as shown by the arrow D14 to be inserted into the cylinder of the AT case 11. It functions as a dam inside the wall 11b. Further, the ECU connector / case sealing material 240 flows to the fitting end surface 112a as described above, and further propagates along the outer peripheral surface of the fitting convex portion 112 as indicated by an arrow D15 to form the cylindrical wall 11b. It works to block the oil that has flowed near the inner surface.

  Further, the ECU connector / case sealing material 240 also has a function of blocking water or the like entering from the outside of the cylindrical wall 11b as indicated by an arrow D17.

  FIG. 4 is a diagram showing a comparative example with respect to the connector connection structure shown in FIGS.

  In the connector connection structure 6 of the comparative example shown in FIG. 4, the ECU connector 700 fixed to the ECU case 71 of the ECU 70 is connected to the relay connector 600 fixed to the AT case 61 of the AT 60. The AT connector 800 is connected to the relay connector 600 inside the AT case 61. Further, in the connector connection structure 6 of the comparative example, by providing various sealing materials on the relay connector 600, oil leakage to the outside of the AT case 61 can be prevented. Incidentally, in FIG. 4, only the relay connector 600 relating to the prevention of oil leakage among the three connectors is shown in a sectional view so that the internal structure can be seen.

  The relay connector 600 is a male connector provided on the housing 610 so that a pin-shaped male terminal 620 projects toward both the inside of the AT 60 and the ECU 70. On the other hand, both the AT connector 800 and the ECU connector 700 are female connectors.

  The housing 610 of the relay connector 600 is provided with a fixing flange 611 for fixing the relay connector 600 to the AT case 61 while penetrating the opening 61a of the AT case 61. A connector / AT case sealing material 630 is provided so as to be sandwiched between the fixing flange 611 and the periphery of the opening 61a of the AT case 61. The connector / AT case sealing material 630 has a function of blocking the oil flowing through the gap between the relay connector 600 and the opening 61 a of the AT case 61.

  Further, the housing 610 of the relay connector 600 is provided with a bottomed tubular portion 612 that receives the convex portion 701 in which the female terminal is accommodated in the ECU connector 700. The bottom of the bottomed tubular portion 612 is filled with the terminal sealing material 640. The terminal sealing material 640 has a function of blocking the progress of the oil flowing along the male terminal 620.

  Further, a connector / ECU case sealing material 650 is provided on the outer peripheral surface of the bottomed tubular portion 612 so as to be sandwiched between the relay connector 600 and the inner periphery of the opening 71 a of the ECU case 71. The connector / ECU case sealing material 650 has a function of blocking water or the like entering from the outside between the relay connector 600 and the inner periphery of the opening 71 a of the ECU case 71.

  In contrast to the connector connection structure 6 of the comparative example described above, according to the connector connection structure 1 and the AT / ECU composite 30 of the first embodiment shown in FIGS. The AT connector 100 connected to is fixed to the AT case 11. Therefore, the relay connector 600 employed in the connector connection structure 6 of the comparative example is unnecessary, and the number of parts, the size of the AT 10 and the number of electrical connection points can be reduced accordingly.

  Then, the terminal sealing material 230 of the ECU connector 200 can prevent oil leakage from the terminals of the two connectors. Further, the ECU connector / case sealing material 240 between the ECU connector 200 and the AT case 11 can prevent oil leakage from the AT case 11 and intrusion of water or the like from the outside.

  In addition, in the present embodiment, since the sealing locations of various sealing materials are gathered outside the AT case 11, the number of sealing materials can be suppressed, and in this respect as well, the AT 10 can be prevented from increasing in size. . In addition, since the number of sealing materials is reduced in a state where the sealed locations are gathered outside the AT case 11, it is possible to reduce the time and effort required to check the sealing.

  As described above, according to the present embodiment, it is possible to suppress the number of parts, the size of the AT 10, and the number of electrical connection points while preventing oil leakage of the AT case 11.

  Here, in the present embodiment, the AT side housing 110 is fixed to the AT case 11 with the flange 114 overlapping the periphery of the opening 11a. Then, the tubular wall 11b of the AT case 11 accommodates the above-mentioned flange 114 inside together with the bottomed tubular portion 212 of the ECU side housing 210. Since the flange 114 is placed around the opening 11a and the AT-side housing 110 is fixed to the AT case 11 while being housed in the tubular wall 11b, this fixing can be performed stably.

  Next, a second embodiment will be described. The second embodiment is different from the above-described first embodiment in the sealing material for preventing oil leakage and water intrusion. On the other hand, the device composite body in the second embodiment is the same AT / ECU composite body 30 as in the first embodiment. In the following, the second embodiment will be described by omitting the description of the same points as the first embodiment and focusing on the differences.

  FIG. 5 is a schematic cross-sectional view showing the connector connection structure according to the second embodiment of the present invention.

  First, also in the connector connection structure 4 of the present embodiment, the AT side housing 410 of the AT connector 400 is fixed to the AT case 41 of the AT 40 as follows, as in the first embodiment. That is, with the flange 414 overlapping the periphery of the opening 41a, the fitting protrusion 412 is projected from the opening 41a, and the AT-side housing 410 is fixed to the AT case 41. Further, similarly to the first embodiment, the ECU side housing 510 of the ECU connector 500 is also fixed to the ECU case 51 of the ECU 50 as follows. That is, the bottomed tubular portion 512 is projected from the opening 51a with the flange 514 overlapping the periphery of the opening 51a, and the ECU-side housing 510 is fixed to the ECU case 51.

  When connecting the AT connector 400 and the ECU connector 500 in the connection direction D41, the fitting convex portion 412 of the AT connector 400 enters the fitting concave portion 511 of the bottomed tubular portion 512 of the ECU connector 500. The female terminal 420 provided at the end of the electric wire 430 from the internal device of the AT 10 and accommodated in the terminal accommodating chamber 411 of the AT connector 400 is attached to the bottom surface 513a of the bottom wall 513 of the fitting recess 511 of the ECU connector 500. The connection end of the male terminal 520 protruding from the connection is connected. The female terminal 420 is accommodated in the terminal accommodating chamber 411 so as to be connectable from the fitting end surface 412a side of the fitting convex portion 412.

  In the present embodiment, in such a connector connection structure 4, in order to prevent oil leakage, water intrusion, and the like, the terminal sealing material 530, the AT connector / case sealing material 440 (first connector / case sealing material). ) And inter-connector sealing material 450 are provided.

  The terminal sealing material 530 is a filling material that fills the space 515 on the opposite side of the fitting recess 511 in the ECU-side housing 510 and seals between the ECU-side housing 510 and the male terminal 520. The AT connector / case sealing material 440 is a resin ring that is sandwiched between the step portion 41a-1 provided around the opening 41a of the AT case 41 and the flange 414 of the AT-side housing 410 to seal the both. It is a gasket. In addition, the inter-connector sealing material 450 is a resin-made ring-shaped packing that is sandwiched between the flange 414 of the AT-side housing 410 and the tip edge 512a of the bottomed tubular portion 512 of the ECU-side housing 510 to seal between them. Is.

  The terminal sealing material 530 flows along the female terminal 420 as shown by the arrow D43 to the fitting end surface 412a, and further through the male terminal 520 as shown by the arrow D46, the ECU connector 500. It works to block the progress of oil flowing into the inside of the. The AT connector / case sealant 440 functions to block the oil flowing from the inside of the AT case 41 through the gap between the opening 41a and the AT connector 400 as shown by the arrow D44. Further, the inter-connector sealing material 450 flows to the fitting end surface 412a as described above, and further propagates along the outer peripheral surface of the fitting convex portion 412 as indicated by an arrow D45, to the inner peripheral surface of the cylindrical wall 41b. It works to block the oil that has flowed to the vicinity. Further, the inter-connector sealing material 450 also has a function of blocking water or the like entering from the outside of the cylindrical wall 41b as shown by an arrow D47.

  Also in the second embodiment described above, the relay connector 600 shown in FIG. 4 is not necessary, and the number of parts, the AT 40 is upsized, and the number of electrical connection points can be suppressed. Then, oil leakage from the AT case 41 and intrusion of water or the like from the outside can be prevented by the terminal sealing material 530, the AT connector / case sealing material 440, and the connector sealing material 450. .

  Further, in the present embodiment, since the two sealing points by the terminal sealing material 530 and the inter-connector sealing material 450 are gathered outside the AT case 41, the time and effort of checking the sealing of these points is reduced. You can also

  As described above, according to the present embodiment, it is possible to suppress the number of parts, the size of the AT 40, and the number of electrical connection points while preventing oil leakage of the AT case 41.

  Further, in the present embodiment, a tubular wall 41b is provided which surrounds the opening 41a of the AT case 41 and stands upright, and which houses the bottomed tubular portion 512 of the ECU connector 200 inside. Since the cylindrical wall 41b that is provided upright around the opening 41a functions to block the progress of water and the like from the outside to the connector fitting portion, the effect of preventing such intrusion of water and the like is further enhanced. You can

  The above-described first to third embodiments are merely representative examples of the present invention, and the present invention is not limited to these embodiments. That is, various modifications can be made without departing from the gist of the present invention. As long as this modification still has the configuration of the connector connection structure of the present invention, it is of course included in the scope of the present invention.

  For example, in the above-described first and second embodiments, as an example of the connector connection structure according to the present invention, a connector that electrically connects internal equipment such as various sensors housed in the AT 10 of the vehicle together with oil to the ECU 20. The connection structures 1 and 4 are illustrated. However, the connector connection structure according to the present invention is not limited to these, and if the connector connection structure is for electrically connecting the internal device of the liquid-filled case to the external device, the specific mode thereof is questioned. is not. Further, the liquid sealed in the liquid sealing case together with the internal device is not limited to the lubricating oil.

  Further, in the above-described first and second embodiments, the ECU connectors 200 and 500 fixed to the ECU case 21 as the case of the external device are illustrated as an example of the second connector according to the present invention. However, the second connector according to the present invention is not limited to these, and may be provided at the end of an electric wire from an external device.

  Further, in the above-described first and second embodiments, as an example of the terminal sealing material according to the present invention, the male terminals 220 and 520 and the ECU side housings 210 and 510 are sealed between each other in the ECU connectors 200 and 500. The terminal sealing materials 230 and 530 are illustrated. However, the terminal sealing material according to the present invention is not limited to this. For example, the AT connector may be provided with a male terminal, and the male terminal and the AT side housing may be sealed.

1,4 connector connection structure 10,40 AT (first device)
11, 41 AT case (liquid filled case)
11a, 21a, 41a, 51a Opening 11b, 41b Cylindrical wall 20,50 ECU (2nd apparatus)
21, 51 ECU case 30 AT / ECU complex (device complex)
41a-1 Step portion 100,400 AT connector (first connector)
110,410 AT side housing (first housing)
111, 411 Terminal accommodating chamber 112, 412 Fitting convex part 112a, 412a Fitting end surface 112b Terminal insertion port 113 part 114, 214, 414, 514 Flange 120, 420 Female terminal (first terminal)
130,430 electric wire 200,500 ECU connector (second connector)
210,510 ECU side housing (second housing)
211,511 Fitting recess 212,512 Bottomed cylindrical portion 212a Holding groove 213,513 Bottom wall 213a, 513a Bottom surface 215,515 Space 220,520 Male terminal (second terminal)
230,530 Terminal sealing material 240 ECU connector / case sealing material (second connector / case sealing material)
440 AT connector / case sealant (first connector / case sealant)
450 Connector-to-connector sealing material 512a Tip edge D11, D41 Connection direction D13, D14, D15, D16, D43, D44, D45, D46 Arrow

Claims (5)

A connector connection structure for electrically connecting an internal device housed together with a liquid to an external device in a liquid-filled case provided with an opening,
The first terminal provided at the end of the electric wire from the internal device is fitted to the first housing fixed to the liquid-filled case so as to project the fitting protrusion from the opening and close the opening. A first connector housed so as to be connectable from the end face side of the convex portion,
The second housing provided with a bottomed tubular portion that receives the fitting convex portion inside is provided with a connection end portion that can be connected to the first terminal from the bottom surface of the bottomed tubular portion. A second connector provided with a second terminal electrically connected to an external device,
A cylindrical wall that surrounds the periphery of the opening in the liquid-filled case and stands upright, and that houses the bottomed cylindrical portion inside.
A terminal sealing material that seals between the first housing and the first terminal or between the second housing and the second terminal, and
A second connector / case sealing material that is sandwiched between the outer peripheral surface of the bottomed tubular portion of the second connector and the inner peripheral surface of the tubular wall of the liquid-filled case to seal between the two.
A connector connection structure comprising: The first housing has a flange having a diameter larger than that of the opening, and the fitting projection is projected from the opening in a state where the flange overlaps the periphery of the opening and is fixed to the liquid sealing case,
The connector connection structure according to claim 1, wherein the tubular wall accommodates the flange inside together with the bottomed tubular portion. A connector connection structure for electrically connecting an internal device housed together with a liquid to an external device in a liquid-filled case provided with an opening,
The first housing fixed to the liquid sealing case so as to close the opening by projecting a fitting convex portion from the opening in a state where a flange having a diameter larger than the opening overlaps the periphery of the opening, A first connector in which a first terminal provided at an end of an electric wire from a device is accommodated so as to be connectable from an end face side of the fitting convex portion,
The second housing provided with a bottomed tubular portion that receives the fitting convex portion inside is provided with a connection end portion that can be connected to the first terminal from the bottom surface of the bottomed tubular portion. A second connector provided with a second terminal electrically connected to an external device,
A terminal sealing material for sealing between the first housing and the first terminal or between the second housing and the second terminal,
A first connector / case sealing material sandwiched between the periphery of the opening in the liquid-filled case and the flange of the first housing to seal between the both;
An inter-connector sealing material that is sandwiched between the flange of the first housing and the tip edge of the bottomed tubular portion of the second housing to seal between the two.
A connector connection structure comprising:   The connector connection structure according to claim 3, further comprising a cylindrical wall that is provided upright to surround the opening of the liquid sealing case and that accommodates the bottomed cylindrical portion inside. A first device having a liquid-filled case for accommodating an internal device together with a liquid; and
A second device as an external device to the internal device in the first device,
The device complex, wherein the internal device is electrically connected to the second device by the connector connection structure according to any one of claims 1 to 4.

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