JP2005203279A - Waterproof joint connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof joint connector to enhance waterproof performance of a connector. <P>SOLUTION: This waterproof joint connector is composed of an insertion side connector part 11 and an acceptance side connector part 13. In the insertion side connector part 11, a plurality of connector housings 15 provided with terminal housing chambers 21 to house a plurality of connecting terminals 19 are united by laminating them, and the gap between the terminal housing chamber 21 and the connecting terminal 19 connected to an electric wire W is sealed in a watertight manner by a waterproofing plug 25. The acceptance side connector part 13 is provided with a connector case 29 having a connector accepting chamber 41 to accept the insertion side connector part 13, and a circuit forming body 47 having a plurality of male terminals 45 protruding in the connector accepting chamber 41, and the space between both connector parts 11, 13 is sealed in a watertight manner by a waterproofing member 53. The waterproofing member 53 is disposed between the bottom wall 43 of the connector accepting chamber 41 in the acceptance side connector part 13 and the front end part of the connector housing 15 in the insertion side connector part 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a waterproof joint connector used for connecting a wire harness in an engine room or the like of an automobile.

  The joint connector includes an insertion side connector portion and a receiving side connector portion into which the insertion side connector portion is inserted. The insertion side connector portion is provided with a plurality of terminal accommodating chambers for accommodating connection terminals to which wires are connected. A plurality of connector housings are stacked and united in a plurality of stages, and the receiving side connector portion is mounted on the connector case having a connector receiving chamber for receiving the insertion side connector portion and the bottom wall of the connector receiving chamber. Some have a circuit forming body having a plurality of male terminals protruding into the room (see Patent Document 1).

  In order to provide the joint connector with a waterproof function, the gap between the terminal housing chamber of the connector housing in the connector section on the insertion side and the electric wire connected to the connection terminal housed in the terminal housing chamber is inserted into the electric wire. A waterproofing member assembled in such a way that the connector part of the insertion side connector part is surrounded from the entire circumference by fitting between the insertion side connector part and the receiving side connector part. There is a waterproof joint connector configured to be watertightly sealed (see Patent Document 2).

JP 2001-39239 A (paragraphs 0019 to 0026 in the Detailed Description of the Invention, FIGS. 1A and 1B) Japanese Patent Laid-Open No. 2001-110511 (paragraphs 0012 to 0013 in FIG. 1 in the Detailed Description of the Invention, FIG. 1)

  However, in the joint connector having such a configuration, when the insertion-side connector portion is configured by combining a plurality of connector housings in a plurality of stages, water passes through the front end portion of the connector housing from the gap between the connector housings. There is a problem that the waterproofness and reliability of the connector are deteriorated.

  An object of the present invention is to provide a waterproof joint connector that solves the above-described problems and can improve the waterproofness and reliability of the connector.

  In order to achieve the above object, a waterproof joint connector according to claim 1 of the present invention comprises an insertion-side connector portion and a receiving-side connector portion, and the insertion-side connector portion is a connection terminal to which an electric wire is connected. A plurality of connector housings provided with a plurality of terminal accommodating chambers are stacked and united, and a gap between the terminal accommodating chamber and the connection terminal or the electric wire is sealed watertight by a waterproof plug, and the receiving side connector portion Is provided with a connector case having a connector receiving chamber for receiving the insertion side connector portion, and a circuit forming body having a plurality of male terminals mounted on the bottom wall of the connector receiving chamber and projecting into the connector receiving chamber. In the waterproof joint connector in which the connector portion and the receiving connector portion are fitted together to be watertightly sealed with a waterproof member, the waterproof member is a circuit type. It is composed of a seal plate-like body in which a plurality of male terminal insertion holes are formed, through which the male terminals of the body are inserted, between the bottom wall of the connector receiving chamber in the receiving side connector portion and the front end portion of the connector housing in the insertion side connector portion It is arrange | positioned by this.

  The waterproof joint connector according to claim 2 of the present invention is the waterproof joint connector according to claim 1, wherein the waterproof member is formed with a plurality of male terminal insertion holes through which the male terminals of the circuit forming body are inserted. The insertion side connector part and the receiving side connector part are provided with a plurality of lips projecting in parallel in a plurality of stages on one side of the shape body, and provided with a plurality of lips that bite into the gap between at least the front end part of the connector housing of the insertion side connector part. And the waterproof member lip is bitten into the gap between the front end portions of the connector housing, and the two connector portions are hermetically sealed. is there.

  The waterproof joint connector according to claim 3 of the present invention is the waterproof joint connector according to claim 1 or 2, wherein the plurality of connector housings of the insertion side connector portion are relatively loosely combined so as to be relatively movable. A hook for projecting the connector housing into the connector receiving chamber of the receiving connector portion is provided on both side portions of each connector housing, and a locking tab protruding in the vertical direction is provided on the flange portion. Provided, the guide grooves into which the flanges of the insertion-side connector part are inserted on both inner side walls of the connector-receiving chamber of the receiving-side connector part have an interval that matches the stacking interval of the connector housing of the insertion-side connector part in a plurality of upper and lower stages. The groove width widening portion is formed on the inlet side of the guide groove so that the groove width of the guide groove widens toward the inlet. .

  A waterproof joint connector according to a fourth aspect of the present invention is the waterproof joint connector according to the first, second, or third aspect, in the vicinity of the terminal insertion opening of the terminal accommodating chamber in the connector housing of the insertion side connector portion. A terminal insertion piece that has a wire insertion groove into which a wire connected to a connection terminal housed in another terminal housing chamber adjacent in the direction or the downward direction is inserted, and that contacts the rear portion of the connection terminal. It protrudes toward the terminal accommodating chamber side.

  According to the waterproof joint connector recited in claim 1 of the present invention, the waterproof member is disposed between the bottom wall of the connector receiving chamber in the receiving-side connector portion and the front end portion of the connector housing in the insertion-side connector portion. Since the space between the connector housings is sealed in a watertight manner, it becomes difficult for water to enter the terminal housing chamber through the front end of the connector housing from the gap between the connector housings. As a result, the waterproofness and reliability of the connector can be improved.

  According to the waterproof joint connector described in claim 2 of the present invention, the insertion-side connector portion and the receiving-side connector portion are fitted, and the waterproof member is pressed by both connector portions, whereby the lip of the waterproof member becomes the front end of the connector housing. Since the gaps between the parts bite into the gaps and are filled, the watertightness between the connector housings is further improved, and the waterproofness and reliability of the connector can be further improved.

  According to the waterproof joint connector described in claim 3 of the present invention, the insertion-side connector portion is inserted into the receiving-side connector portion, and the insertion-side connector portion and the receiving-side connector portion are fitted to each other, thereby receiving the connector at the receiving-side connector portion. Since the groove width expanding portion of the guide groove of the chamber engages with the locking tab provided at the flange portion of the connector housing in the insertion side connector portion, there is no gap between the flange portion of the connector housing and the guide groove, and the connector Shaking of the housing can be prevented. In addition, the rear portions of the connector housings that have spread in the vertical direction are narrowed due to the loose coupling of the connector housings, whereas the front portions of the connector housings become free ends and the front portions are free gaps (dead space) of the connector housings. ) Or the amount of play between the guide groove of the connector receiving chamber and the flange portion of the connector housing, and the gap between the front end portions of the connector housing increases. Therefore, the lip of the waterproof member surely bites into the gap between the front end portions of the connector housing, the water tightness between the connector housings is further improved, the assembly workability of the waterproof joint connector is improved, and the connector is manufactured efficiently. can do.

  According to the waterproof joint connector described in claim 4 of the present invention, it is possible to prevent the connection terminal from coming out of the terminal accommodating chamber of the insertion side connector portion by the terminal retaining piece. Further, when the connection terminal is prevented from being detached by the lance, the connection terminal is double-locked by the lance and the terminal retaining piece, and the connection terminal can be more reliably prevented from coming out of the terminal accommodating chamber. it can.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an enlarged schematic view showing a waterproof joint connector of the present invention applied to a multipolar connector of an automotive wire harness, FIG. 2 is a front view of an insertion side connector portion, and FIG. 3 is a right side view of FIG. 4 is a rear view of FIG. 2, FIG. 5 is a front view showing a connector housing constituting the insertion side connector portion, FIG. 6 is a right side view of FIG. 5, FIG. 7 is a plan view of FIG. FIG. 9 is a rear view of FIG. 5, and FIG. 9 is a diagram showing a state in which the terminal for electrical connection is inserted into the terminal housing chamber of the connector housing, where (a) shows the state before inserting the terminal for connection, and (b) FIG. 10 is a waterproof member between the bottom wall of the connector receiving chamber in the receiving side connector portion and the front end portion of the connector housing in the inserting side connector portion. The insertion side connector part and the receiving side connector part. Engaged, is a schematic view showing an enlarged state of a seal between the two connector portions watertight.

  As shown in FIG. 1, the waterproof joint connector of the present invention includes an insertion side connector portion (female connector) 11 and a receiving side connector portion (male connector) 13 into which the insertion side connector portion 11 is inserted. As shown in FIGS. 2 to 4, the insertion-side connector section 11 includes a plurality of (5 in the illustrated example) plastic connector housings 15 and a plurality of connector housings 15 in the vertical direction (in the illustrated example, 5 stages). And a connector housing locking means 17 made of plastic having a structure in which the connector housings 15 are loosely combined so as to be relatively movable.

  Each of the connector housings 15 is formed in a rectangular plate shape as shown in FIGS. 5 to 8, and a plurality (five in the illustrated example) accommodates a plurality (five in the illustrated example) of connection terminals 19 (see FIG. 9). ) Terminal accommodating chambers 21 are provided in parallel in a single layer in the lateral direction. As shown in FIGS. 5, 6 and 9, each terminal accommodating chamber 21 is formed in a rectangular tube shape from the front portion to the substantially central portion, and is connected to the rear inner side of the outer wall 21 b of the double upper wall 21 a. A lance 23 made of an elastic locking piece made of plastic and having a locking claw 23a that engages with the locking receiving portion 19a of the terminal 19 is provided in a cantilever shape at the rear. Further, it is formed in a cylindrical shape from substantially the center to the rear so that no openings, slits or the like are generated in the circumferential direction.

  And the terminal of the electric wire W which comprises a wire harness is connected by crimping | compression-bonding etc., and the terminal for connection by which the rubber | gum waterproof plug 25 was inserted by the opening | mouth (including the case over the rear part of the terminal 19 for connection) of the electric wire W was connected. 19 (see FIG. 9A) is inserted and accommodated in the terminal accommodating chamber 21 of the connector housing 15. As a result, the locking claw 23 a of the lance 23 engages with the locking receiving portion 19 a of the connection terminal 19 to prevent the connection terminal 19 from coming off, and the rear portion of the terminal accommodating chamber 21 and the terminal accommodating chamber 21. The gap with the electric wire W connected to the connection terminal 19 accommodated in is sealed in a watertight manner by the waterproof plug 25 (see FIGS. 9B and 9C). The waterproof plug 25 is provided with, for example, three annular protrusions 25a arranged in parallel in the longitudinal direction on the outer peripheral surface so as to increase the contact surface pressure with the inner peripheral surface of the rear portion of the terminal accommodating chamber 21. The sealing performance is improved. The waterproof plug 25 is not attached to the electric wire W side, but is inserted into the rear portion of the connection terminal 19, and the gap between the rear portion of the terminal accommodating chamber 21 and the connection terminal 19 accommodated in the terminal accommodating chamber 21 is the waterproof plug 25. May be hermetically sealed.

  Further, as shown in FIGS. 5 to 9, in the vicinity of the terminal insertion port of the terminal accommodating chamber 21 at the rear portion of each connector housing 15, the terminal housing chamber 21 is accommodated in another (lower) terminal accommodating chamber 21 adjacent in the downward direction in the illustrated example. There are five U-shaped electric wire insertion grooves 27a into which the electric wires W connected to the connecting terminals 19 are inserted at a pitch interval of the terminal accommodating chambers 21 in the lateral direction (width direction), and the connecting terminals. 19, that is, a terminal retaining piece 27 that abuts on the rear portion of the lower connection terminal 19 projects toward the other (lower) terminal accommodating chamber 21 side. It should be noted that the terminal retaining pieces 27 are arranged in contact with the connecting terminals 19 housed in the other (upper) terminal housing chambers 21 adjacent in the upward direction, that is, the other (upper) so as to contact the rear portion of the upper connecting terminals 19. You may make it project toward the terminal accommodating chamber 21 side.

  As described above, when the terminal retaining piece 27 protrudes, the terminal retaining piece 27 can prevent the connection terminal 19 from coming out of the terminal accommodating chamber 21 of the insertion side connector portion 11. Further, since the connection terminal 19 is also prevented from being detached by the lance 23, the connection terminal 19 is doubly locked by the lance 23 and the terminal retaining piece 27, so that the connection terminal 19 can be more easily removed from the terminal accommodating chamber 21. It can be surely prevented.

  Furthermore, the connector housing 15 is guided into the connector receiving chamber 41 (see FIGS. 1 and 9) of the receiving side connector portion 13 as shown in FIGS. A hook 31 for insertion is projected, and locking tabs 33 projecting in the vertical direction are provided on the upper and lower surfaces of the hook 31. 34 is provided on the front wall 21 c of the terminal accommodating chamber 21 of each connector housing 15, and the male terminal 45 of the receiving side connector portion 13 is connected to the inserting side connector portion 11 by fitting the insertion side connector portion 11 and the receiving side connector portion 13. This is a terminal insertion hole that is inserted into the terminal accommodating chamber 21 of each connector housing 15 and is connected to the connection terminal 19 accommodated in the terminal accommodating chamber 21 (see FIGS. 2, 5, and 9).

  As shown in FIGS. 2, 3, 5, and 6, the connector housing locking means 17 corresponds to the engagement recesses 35 provided in the upper part of the front part and the substantially central part of both side parts of each connector housing 15. When the connector housing 15 is laminated, the connector in the upper connector housing 15 adjacent to the engagement recess 35 of the connector housing locking means 17 in the predetermined connector housing 15 is formed. The engagement protrusion 37 of the housing lock means 17 is also connected to the engagement recess 35 of the connector housing lock means 17 in the lower connector housing 15 adjacent to the engagement protrusion 37 of the connector housing lock means 17 in the predetermined connector housing 15. Engage each other. The engaging recess 35 is formed by providing a U-shaped groove that opens laterally on both sides of the connector housing 15, and the engaging protrusion 37 is a linear engagement projecting downward from both sides of the connector housing 15. An inward claw is provided at the tip of the stop piece. A loose gap (not shown) is formed between the engaging recesses 35 of the connector housing locking means 17 and the engaging surfaces of the engaging protrusions 37 of the other connector housing locking means 17 engaged therewith. The plurality of connector housings 15 are configured so as to be loosely combined so as to be relatively movable (for example, a bellows structure).

  It should be noted that the connector housing locking means 17 is engaged on the connector housing 15 stacked on the uppermost stage of the insertion-side connector section 11 at portions corresponding to the engaging recesses 35 of the connector housing locking means 17 on both sides. A convex portion 37 is provided, and a terminal retaining piece 27 projects downward from a portion corresponding to the terminal retaining piece 27 of the connector housing 15 at the rear, and has a rectangular shape having substantially the same dimensions as the vertical and horizontal dimensions of the connector housing 15. A plate-shaped cover 39 is attached (see FIGS. 2 to 4).

  When assembling the insertion-side connector portion 11, the connection terminals 19 (see FIG. 9A) to which the electric wires W are connected and the waterproof plugs 25 are inserted are connected to the terminals of the five connector housings 15. The gap between the rear portion of the terminal accommodating chamber 21 and the electric wire W connected to the connection terminal 19 accommodated in the terminal accommodating chamber 21 is sealed in a watertight manner by the waterproof plug 25. Then, the locking claw 23a of the lance 23 is engaged with the locking receiving portion 19a of the connection terminal 19 (see FIGS. 9B and 9C).

  Next, as shown in FIGS. 2 to 4, the five connector housings 15 are sequentially stacked from the lower side, a cover 39 is placed on the uppermost connector housing 15, and the connector housing 15 is connected by the connector housing locking means 17. And cover 39 are loosely combined with each other.

  Then, the terminal retaining pieces 27 of the connector housings 15 and the covers 39 are brought into contact with the rear portions of the connection terminals 19 accommodated in the terminal accommodating chambers 21 of the adjacent lower connector housings 15, and the wire insertion grooves of the terminal retaining pieces 27 are also provided. The wire W connected to the lower connection terminal 19 is inserted into and engaged with 27a, and the connection terminal 19 is double-locked with the terminal retaining pieces 27.

  As shown in FIGS. 1 and 10, the receiving-side connector portion 13 has a connector receiving chamber 41 for receiving the insertion-side connector portion 11 on one side, and a rectangular box-type connector case 29 formed by plastic molding. The connector receiving chamber 41 is attached to the bottom wall 43 and protrudes into the connector receiving chamber 41 through a plurality (25 in the illustrated example) of rectangular male terminal insertion holes 51 formed in the bottom wall 43. A plurality of (25 in the illustrated example) male terminals 45 and a circuit forming body 47 having a holder 49 for supporting the male terminals 45 are provided, and the insertion side connector portion 11 is inserted into the receiving side connector portion 13 to insert the insertion side connector. By fitting the part 11 and the receiving side connector part 13, the connector parts 11 and 13 are configured to be watertightly sealed with the waterproof member 53.

  More specifically, a substantially U-shaped guide groove 55 inserted into the both inner side walls of the connector receiving chamber 41 of the connector case 29 while the flange portion 31 of the insertion side connector portion 11 is guided is provided on the connector case 29. Along the longitudinal direction, that is, along the insertion direction of the insertion-side connector portion 11, a plurality of upper and lower stages (five in the illustrated example) are arranged at intervals matching the stacking interval of the connector housings 15 of the insertion-side connector portion 11. A groove width expanding portion 57 is formed on the inlet side of each guide groove 55 so that the groove width expands toward the inlet (the side where the insertion side connector portion 11 is inserted). Then, by inserting the insertion side connector portion 11 into the receiving side connector portion 13 and fitting the insertion side connector portion 11 and the receiving side connector portion 13, the groove width of the guide groove 55 of the connector receiving chamber 41 in the receiving side connector portion 13. The expanding portion 57 and the locking tab 33 provided on the flange portion 31 of the connector housing 15 in the insertion side connector portion 11 are engaged with each other, so that there is no gap between the flange portion 31 of the connector housing 15 and the guide groove 55. Shaking of the connector housing 15 can be prevented.

  The 25 male terminals 45 protruding into the connector receiving chamber 41 of the connector case 29 are made of a flat bar made of a highly conductive material (conductor) such as copper or copper alloy material, as shown in FIGS. Are formed to the same dimensions. These male terminals 45 may be formed of a rod-like body such as a circle, a triangle, or a square. The holder 49 is made of a circuit board in which a circuit pattern made of a conductor such as copper foil is provided on one surface (back surface) of an insulating plate such as plastic by printing or the like. The twenty-five male terminals 45 are arranged in five rows in the width direction (horizontal direction) and in five stages in the vertical direction (vertical direction) at a predetermined interval so as to correspond to the terminal insertion holes 34 of the insertion side connector portion 11. Each base end side is supported and fixed to the other surface (front surface) of the holder 49 through the holder 49 and soldered to the circuit pattern. Note that the male terminal 45 and the holder 49 constituting the circuit forming body 47 may be made of a bus bar made of a highly conductive material (conductor) such as copper or a copper alloy material.

  As shown in FIGS. 1 and 10, the circuit forming body 47 is housed in a circuit forming body housing chamber 59 provided on the other side of the connector case 29, that is, on the opposite side of the connector receiving chamber 41 with a bottom wall 43 therebetween. The male terminal 45 of the circuit forming body 47 is attached to the bottom wall 43 of the connector case 29 and protrudes into the connector receiving chamber 41 through the male terminal insertion hole 51 formed in the bottom wall 43 as described above. It is inserted into the connection terminal 19 of the insertion side connector part 11 and connected. As shown in FIG. 1, the circuit 61 is attached to the outer surface of the connector case 29 so as to cover the opening of the circuit forming body accommodation chamber 59 of the connector case 29 and is accommodated in the circuit forming body accommodation chamber 59. A case cover that holds and protects the formed body 47.

  As shown in FIG. 12, the waterproof member 53 has a plurality of (five in the illustrated example) rectangular male terminal insertion holes 65 through which the male terminals 45 of the circuit forming body 47 are inserted in parallel in five vertical stages. Further, at least a male terminal insertion hole is provided on one side of the rectangular seal plate 63 with a space corresponding to the stacking interval of the connector housings 15 of the insertion side connector portion 11 in a plurality of upper and lower steps (six in the illustrated example). The gaps between the front end portions of the connector housing 15 of the insertion-side connector portion 11 and between the uppermost connector housing 15 and the front end portion of the cover 39 are arranged so as to be arranged on the seal plate 63 between the 65. And is provided with a plurality of (six in the illustrated example) lip 67 having a triangular section (wedge shape or tabbed shape) that pushes up and seals the lower surface of the front end portion of the lowermost connector housing 15. , Resistant It is formed by molding a rubber material having a resistance. The male terminal insertion holes 65 are formed in such a size that the five male terminals 45 arranged in one horizontal row of the circuit forming body 47 can be inserted all at once. The terminal 45 or a plurality of male terminals 45 other than five may be perforated.

  As shown in FIG. 11, the waterproof member 53 configured as described above is configured such that the male terminal 45 of the circuit forming body 47 is inserted through the male terminal insertion hole 51 into the bottom wall 43 of the connector receiving chamber 41 in the receiving side connector portion 13 in advance. 1 and 10, the connector is disposed between the bottom wall 43 of the connector receiving chamber 41 in the receiving-side connector portion 13 and the front end portion of the connector housing 15 in the inserting-side connector portion 11. At the same time, the male terminal 45 of the circuit forming body 47 is inserted into the male terminal insertion hole 65, the insertion-side connector portion 11 and the receiving-side connector portion 13 are fitted, and the waterproof member 53 is pressed by both the connector portions 11 and 13. As a result, the lip 67 bites into at least the gap between the front end portions of the connector housing 15, and the space between the connector portions 11 and 13 is sealed watertight.

  As described above, the waterproof member 53 is disposed between the bottom wall 43 of the connector receiving chamber 41 in the receiving side connector portion 13 and the front end portion of the connector housing 15 in the insertion side connector portion 11, so Is sealed in a watertight manner, it becomes difficult for water to enter the terminal accommodating chamber 21 through the front end portion of the connector housing 15 from the gap between the connector housings 15, and between the connector portions 11, 13 and the insertion side connector portion 11. The watertightness between the connector housings 15 is improved, and the waterproofness and reliability of the connector can be improved.

  Moreover, when the waterproof member 53 has the lip 67 as in the present embodiment, the insertion side connector portion 11 and the receiving side connector portion 13 are fitted, and the waterproof member 53 is pressed by both the connector portions 11 and 13. As a result, the lip 67 of the waterproof member 53 bites into the gap between the front end portions of the connector housing 15 and fills the gap, thereby further improving the watertightness between the connector housings 15 and further improving the waterproofness and reliability of the connector. Can be improved.

  Further, as in the present embodiment, a groove width expanding portion 57 is formed on the inlet side of the guide groove 55 provided in parallel with the connector receiving chamber 41 of the receiving side connector portion 13, and the connector housing 15 of the insertion side connector portion 11. As shown in FIG. 10, when the locking tab 33 is provided on the flange portion 31, the insertion side connector portion 11 is inserted into the reception side connector portion 13, and the insertion side connector portion 11 and the reception side connector portion 13 are inserted. By the fitting, the groove width widened portion 57 of the guide groove 55 of the connector receiving chamber 41 in the receiving side connector portion 13 and the locking tab 33 of the flange portion 31 of the connector housing 15 in the insertion side connector portion 11 are engaged. In the insertion side connector portion 11, there is no gap between the flange portion of the connector housing 15 and the guide groove, and the insertion side connector is expanded in the vertical direction by loosely uniting the connector housing 15. 11, the rear portions of the connector housing 15 are narrowed as indicated by an arrow A in FIG. 19, whereas the front portion of the connector housing 15 is a free end, and the front portions are free gaps (dead space) of the connector housing 15. Or the gap between the front end portions of the connector housing 15 increases as shown by the arrow B in FIG. 10 by the play amount between the guide groove 55 of the connector receiving chamber 41 and the flange portion 31 of the connector housing 15. . Therefore, the lip 67 of the waterproof member 53 surely bites into the gap between the front end portions of the connector housing 15, and the watertightness between the connector housings 15 is further improved, and the assembly workability of the waterproof joint connector is improved. Can be produced efficiently.

  As shown in FIG. 1, a fitting gap 69 between the connector case 29 and the case cover 62 is used to prevent water from entering the circuit forming body accommodation chamber 59 of the connector case 29 in the receiving-side connector portion 13. It is the rubber gasket member provided in the. As shown in FIG. 13, the gasket member 69 is formed in a rectangular ring shape, and two annular protrusions 69 a are provided on the outer peripheral surface thereof and three annular protrusions 69 a are provided in parallel on the inner peripheral surface with a space therebetween. It has been.

  When assembling the waterproof joint connector of the present invention, as shown in FIG. 14A, the insertion-side connector portion 11 and the receiving-side connector portion 13 are opposed to each other, and the axes of the connector portions 11 and 13 are parallel to each other. As shown in FIGS. 14B and 14C, the insertion side connector portion 11 is guided by the guide groove 55 of the reception side connector portion 13 while the flange portion 31 is guided, and the reception side connector 11 The male terminal 45 that is inserted into the connector receiving chamber 41 of the portion 13 and protrudes into the connector receiving chamber 41 is inserted into the connection terminal 19 accommodated in the terminal accommodating chamber 21 of the connector housing 15 in the insertion side connector portion 11. 1, the insertion side connector portion 11 and the receiving side connector portion 13 are fitted and connected.

It is a schematic diagram expanding and showing what applied the waterproof joint connector of the present invention to the multipolar connector of the wire harness for vehicles. It is a front view of an insertion side connector part. FIG. 3 is a right side view of FIG. 2. FIG. 3 is a rear view of FIG. 2. It is a front view which shows the connector housing which comprises an insertion side connector part. FIG. 6 is a right side view of FIG. 5. FIG. 6 is a plan view of FIG. 5. FIG. 6 is a rear view of FIG. 5. It is a figure which shows the state which inserts the terminal for electrical connection in the terminal storage chamber of the connector housing of an insertion side connector part, (a) is the thing before inserting the terminal for connection, (b) is inserting the terminal for connection (C) is after the connection terminal is inserted. A waterproof member is disposed between the bottom wall of the connector receiving chamber at the receiving side connector portion and the front end portion of the connector housing at the insertion side connector portion, and the insertion side connector portion and the receiving side connector portion are fitted to each other. It is a schematic diagram which expands and shows the state which seals between parts watertight. It is a front view which shows the state which has arrange | positioned the waterproof member to the bottom wall of the connector receiving chamber of a receiving side connector part. 11A and 11B show the waterproof member of FIG. 11, in which FIG. 11A is a front view, FIG. 11B is a sectional view taken along the line XX of FIG. 11A, and FIG. The gasket member which prevents that water permeates into the circuit formation body accommodation chamber of the connector case of a receiving side connector part is shown, (a) is a front view, (b) is a YY line side sectional view of (a), (C) is a lower side view. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the procedure which assembles the waterproof joint connector of this invention, (a) shows the state which positioned the insertion side connector part and the receiving side connector part facing each other, (b) inserted from the state of (a) (C) shows a state where the insertion of the side connector portion into the connector receiving chamber of the receiving side connector portion is started, and (c) shows a state where the insertion side connector portion is inserted into the receiving side connector portion from the state of (b) to near completion of fitting. It is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Insertion side connector part 13 Receiving side connector part 15 Connector housing 17 Connector housing locking means 19 Connection terminal 19a Locking receiving part 21 Terminal accommodating chamber 21a Double upper wall 21b Outer wall 21c Front wall 23 Lance 23a Locking claw 25 Waterproof plug 25a annular protrusion 27 terminal retaining piece 27a wire insertion groove 29 connector case 31 flange 33 locking tab 34 terminal insertion hole 35 engagement recess 37 engagement projection 39 cover 41 connector receiving chamber 43 bottom wall 45 male terminal 47 Circuit forming body 49 Holder 51 Male terminal insertion hole 53 Waterproof member 55 Guide groove 57 Groove width expanding portion 59 Circuit forming body accommodation chamber 61 Case cover 63 Seal plate-like body 65 Male terminal insertion hole 67 Lip 69 Gasket member 69a Annular protrusion W electric wire

Claims (4)

  It consists of an insertion-side connector part and a receiving-side connector part, and the insertion-side connector part is united by laminating a plurality of connector housings provided with a plurality of terminal accommodation chambers for accommodating connection terminals to which wires are connected, The clearance between the terminal accommodating chamber and the connection terminal or electric wire is sealed in a watertight manner with a waterproof plug, and the receiving-side connector portion includes a connector case having a connector receiving chamber for receiving the insertion-side connector portion, and the bottom of the connector receiving chamber. And a circuit forming body having a plurality of male terminals projecting into the connector receiving chamber. The fitting between the insertion-side connector portion and the receiving-side connector portion allows watertightness between the two connector portions with a waterproof member. In the waterproof joint connector to be sealed, the waterproof member is constituted by a seal plate-like body having a plurality of male terminal insertion holes through which the male terminals of the circuit forming body are inserted. Waterproof joint connector, characterized in that disposed between the front end of the connector housing in the bottom wall and the insertion-side connector portion of the connector receiving chamber in the side connector.   The waterproof member protrudes in parallel with a plurality of upper and lower stages on one side of a seal plate-like body formed with a plurality of male terminal insertion holes through which the male terminals of the circuit forming body are inserted, and at least the connector housing of the insertion side connector portion The lip of the waterproof member is formed by providing a plurality of lips that bite into the gap between the front end portions, fitting the insertion side connector portion and the receiving side connector portion, and pressing the waterproof member at both connector portions. The waterproof joint connector according to claim 1, wherein the waterproof joint connector bites into a gap between the front end portions and is sealed watertight between the two connector portions.   A plurality of connector housings of the insertion side connector portion are loosely combined so as to be relatively movable, and are inserted into both side portions of each connector housing while guiding them into the connector receiving chamber of the receiving side connector portion. And a locking tab protruding in the vertical direction is provided on the flange, and the flange of the insertion side connector is inserted into both inner side walls of the connector receiving chamber of the reception side connector. The guide grooves are arranged in parallel at intervals above the stacking interval of the connector housings on the insertion side connector section, and the width of the guide groove is widened toward the inlet toward the inlet. The waterproof joint connector according to claim 1, wherein a groove width widening portion to be opened is formed.   An electric wire connected to a connection terminal accommodated in another terminal accommodating chamber adjacent in the upward or downward direction is inserted in the vicinity of the terminal insertion port of the terminal accommodating chamber in the connector housing of the insertion side connector portion. 4. The waterproof joint according to claim 1, wherein a terminal retaining piece that has an insertion groove and abuts against a rear portion of the connection terminal protrudes toward the other terminal accommodating chamber. connector.

Images