JP2008010339A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve connection reliability of terminal fittings having a possibility of being damaged due to fluctuations in connection positions of both terminal fittings by a means such that the both terminal fittings are sliding contacted with each other by vibrations of electric wires. <P>SOLUTION: A connector F is provided with a female housing 10, capable of housing a terminal fitting 30 connected, to the terminal of the electric wire W, with a sealing member 98 for sealing the inside of the female housing 10 by being fitted and fixed to the electric wire W and being fixed into a mounting part 15 opened in the rear face of the female housing 10, and with a rear holder 50, having an electric wire through hole 55 for making the electric wire W pass therethrough and regulating its coming off by means that the sealing member 98 is pressed by covering the female housing 10 from behind. At the sealing member 98, both seal body part 96 adhered closely to the outer peripheral face of the electric wire W and also adhered closely to the inner peripheral face of the mounting part 15 and an anti-vibration part 94 adhered closely to the outer peripheral face of the electric wire W and also adhered closely to the inner peripheral face of the electric wire through hole 55 in the rear holder 50 are installed, lined in front and back. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connector.

As a connector, a connector housing that accommodates a terminal fitting connected to the end of the electric wire, a seal member that is fitted into the electric wire and fitted into the rear end opening of the connector housing, and is attached to the connector housing from behind And a rear holder that holds the seal member and prevents it from coming off (see, for example, Patent Document 1). The rear holder is formed by opening an electric wire through hole through which the electric wire passes, and the electric wire is drawn out through the electric wire through hole. The rear holder is formed with a locking piece that can be locked to a locking portion provided on the peripheral surface of the connector housing so as to be able to bend and deform. When the rear holder is properly attached to the connector housing, the locking piece elastically locks the locking portion, and the rear holder is held by the connector housing.
JP 2004-171831 A

  By the way, when the connector described above is fitted to the mating connector, the terminal fitting is fitted and connected to the mating terminal fitting, and the electric wire led out of the connector housing from that state is shaken, the electric wire and the electric wire An electric wire arranged inside the connector housing may vibrate in the clearance range existing between the through holes and the two terminal fittings may come into sliding contact with each other. If it does so, the connection position of both terminal metal fittings may fluctuate and connection reliability may be impaired.

  The present invention has been completed based on the above circumstances, and an object thereof is to improve the connection reliability of terminal fittings.

  As a means for achieving the above object, the invention according to claim 1 is a connector housing capable of accommodating a terminal fitting connected to an end of an electric wire, and fitted to the electric wire and opened on a rear surface of the connector housing. A seal member that seals the inside of the connector housing by being fitted into the opening that is inserted, and an electric wire through hole that allows the electric wire to pass therethrough, and is pressed against the connector housing from behind to hold the seal member. A rear holder that restricts the withdrawal, and the seal member is in close contact with the outer peripheral surface of the electric wire and is in close contact with the inner peripheral surface of the opening of the connector housing, An anti-sway part that is in close contact with the outer peripheral surface and in close contact with the inner peripheral surface of the wire through hole in the rear holder. At where the structure is provided in tandem with the features.

  According to a second aspect of the present invention, in the first aspect of the present invention, the rear holder is formed with a cylindrical portion having the wire through-hole projecting inside, and the steadying portion is formed on the cylindrical portion. It is characterized by being in close contact with the inner peripheral surface of the wire through hole.

  According to a third aspect of the present invention, in the second aspect, an inner peripheral surface of the wire through hole in the cylindrical portion is tapered toward the rear end of the cylindrical portion, and the runout The outer peripheral surface of the stopper is characterized by a taper shape corresponding to the inner peripheral surface of the wire through hole.

<Invention of Claim 1>
When the electric wire led out of the connector housing is shaken in a state where the connector housing is fitted to the mating connector housing, the steadying portion of the sealing member fitted to the electric wire comes into close contact with the outer peripheral surface of the electric wire. In addition, since the vibration of the electric wire in the connector housing can be suppressed by closely contacting the inner peripheral surface of the electric wire through hole in the rear holder, the terminal fitting connected to the end of the electric wire and the mating terminal fitting slide. Can be avoided. Therefore, the connection position of both terminal fittings is kept constant, and connection reliability is improved. In this case, since the clearance existing between the wire through hole and the wire is filled with the seal member, compared with the case where the outer peripheral surface of the wire is directly adhered to the inner peripheral surface of the wire through hole, There is a merit that it is possible to absorb the positional accuracy error that may occur in the meantime.

<Invention of Claim 2>
The rear holder is formed with a cylindrical part with a wire through hole protruding inside, and the steadying part is in close contact with the inner peripheral surface of the wire through hole in the cylindrical part. It will hit for a long time, and the vibration of the electric wire in the connector housing can be surely suppressed.

<Invention of Claim 3>
The inner peripheral surface of the wire through-hole in the tube portion is tapered toward the rear end of the tube portion, and the outer peripheral surface of the steady rest portion is tapered corresponding to the inner peripheral surface of the wire through-hole. Therefore, when the electric wire drawn out from the electric wire through hole of the cylindrical portion is shaken, the fulcrum portion of the shake is tightly held and suppressed by the steadying portion. Therefore, it is difficult for the vibration force of the electric wire to be transmitted to the connecting portion of both terminal fittings, and connection reliability is further improved.

<Embodiment 1>
Embodiment 1 of this invention is demonstrated based on drawing. The connector F includes a female housing 10 (corresponding to a connector housing in the present invention) that accommodates the female terminal fitting 30 and a rear holder 50 that is attached to the female housing 10 from the rear. The male housing 90 can be fitted. Further, the connector F includes a seal member 98 that seals between the female housing 10 and the terminal fitting 30 in a watertight manner, and a seal ring 97 that seals between the male and female housings 10 and 90 in a watertight manner. In the following description, the front and rear direction is based on the fitting surface side of the male and female housings 10 and 90, and the vertical direction is based on FIG.

  The mating male housing 90 is made of synthetic resin and includes a cylindrical hood portion 91 having an open front surface. One male tab 92 (male terminal fitting) is inserted through the back side wall of the hood portion 91. The male tab 92 is made of a conductive metal and has a plate shape. The male tab 92 is arranged so as to protrude in the hood portion 91 along the plate surface in the front-rear direction. In addition, a lock portion 95 projects from the upper end portion of the outer peripheral surface of the hood portion 91. The lock portion 95 can be elastically locked to the lock arm 12 on the female housing 10 side.

Next, the female housing 10 will be described. The female housing 10 is made of synthetic resin, and the front portion includes a tower portion 13 that is fitted in the mating hood portion 91 and the hood portion 91 that surrounds the tower portion 13 and surrounds the tower portion 13. The fitting part 15 which has the space which makes the space which penetrates, and is attached to the rear part integrally with the tower part 13, protrudes back, and the attachment part 15 which equips the rear holder 50 from back (equivalent to the opening part in this invention) Is provided.
The attachment portion 15 has a cylindrical shape, specifically, a cylindrical shape, and is slightly larger than the tower portion 13 and smaller than the fitting cylinder portion 14. A cavity 16 communicating with the inner space of the attachment portion 15 is formed in the tower portion 13 so as to penetrate in the front-rear direction. One terminal fitting 30 can be inserted into the cavity 16 from the rear through the inner space of the mounting portion 15.

  The terminal fitting 30 includes a box-shaped main body portion 31 into which a male tab 92 can be inserted, and a barrel portion 32 that is connected to the core wire exposed to the end of the electric wire W by caulking while continuing to the rear of the main body portion 31. . The main body portion 31 is fitted in the cavity 16 in the tower portion 13 in a loosely regulated state, and the barrel portion 32 is disposed in the inner space of the fitting cylinder portion 14. In addition, a lance hole 33 is provided in the main body 31, and the lance 17 provided on the inner wall of the cavity 16 is fitted into the lance hole 33 so that the terminal fitting 30 is held in the cavity 16 so as not to be detached. It has become.

  A rubber seal member 98 is fitted to the electric wire W behind the barrel portion 32. The seal member 98 is inserted into the mounting portion 15 from the rear, and is in close contact with the inner peripheral surface of the mounting portion 15 and the outer peripheral surface of the electric wire W so as to seal between both surfaces. Further, the seal member 98 is also fitted into the electric wire through hole 55 provided in the rear holder 50, which will be described in detail later.

  A tab insertion port 13A that allows the male tab 92 to be inserted is formed in a slit shape in the width direction on the front surface of the tower portion 13, and the front surface of the main body portion 31 faces the rear surface of the tab insertion port 13A. . A connecting portion 23 is formed at the rear end of the tower portion 13 so as to project outward in the radial direction so as to be continuous with the rear end of the fitting tube portion 14. On the outer peripheral surface of the tower portion 13, a rubber seal ring 97 is fitted on the rear portion of the tower portion 13 and on the front surface of the connecting portion 23. When both housings 10 and 90 are properly fitted, the seal ring 97 is in close contact with the inner peripheral surface of the hood portion 91 and the outer peripheral surface of the tower portion 13 and seals between both surfaces. It should be noted that window holes 18 are formed on both the left and right sides of the fitting tube portion 14 at positions corresponding to the seal rings 97, and when the housings 10, 90 are properly fitted, the window holes 18 are formed. The front end of the hood portion 91 can be visually recognized through 18.

As shown in FIG. 1, a lock arm 12 is formed on the upper portion of the female housing 10 so as to extend in the front-rear direction. The lock arm 12 is swingably displaceable (elastically displaceable) in a seesaw shape in the vertical direction around a fulcrum portion 24 provided at a position corresponding to the connecting portion 23. The front half part of the lock arm 12 is arranged in a concealed state between the fitting cylinder part 14 and the tower part 13, and the rear half part of the lock arm 12 is arranged in an exposed state above the mounting part 15, and its rear end part Further, an operation unit 25 that is pressed when unlocked is provided one step higher. An arm housing portion 14A that swells into a cross-sectional gate shape is formed on the upper portion of the fitting cylinder portion 14, and the lock arm 12 is disposed inside the arm housing portion 14A. An operation window hole 26 for the lock arm 12 is cut out at the rear end of the upper wall of the arm accommodating portion 14A. The operation portion 25 of the lock arm 12 is released by the operator's fingers entering through the operation window hole 26.
The lock arm 12 is formed with a lock groove 27 opened at the rear end so as to extend in the front-rear direction. When the two housings 10 and 90 are properly fitted, the lock portion 95 is fitted into the lock groove 27, and the lock portion 95 is engaged with the front end of the lock groove 27. To be locked.

On the other hand, as shown in FIG. 3, a pair of left and right lock receiving portions 34 project from the outer peripheral surface of the mounting portion 15 at a substantially central portion in the front-rear direction of the mounting portion 15. The lock receiving portion 34 can be elastically locked to a lock piece 51 provided on the rear holder 50, and its rear surface is a tapered guide surface that is inclined upward toward the front end, and its front surface is substantially vertical. It is a locking surface that stands up.
A frame portion 35 is formed around the lock receiving portion 34 on the outer peripheral surface of the attachment portion 15. The frame portion 35 is formed by opening only the rear region of the lock receiving portion 34 and surrounding the lock receiving portion 34 in a substantially U shape. Further, the frame portion 35 is arranged along the side edge of the lock piece 51 after the rear holder 50 is mounted, so that the lock piece 51 can be prevented from being accidentally bent and deformed to be unlocked by being caught by a foreign object. It has become.

  On the outer peripheral surface of the mounting portion 15, a guide protrusion 36 is formed at the lower end of the outer peripheral surface so as to extend in the front-rear direction. A guide receiving groove 52 provided in the rear holder 50 can enter the guide protrusion 36. A plurality of concave portions 37 are formed on the outer peripheral surface of the attachment portion 15 at intervals in the circumferential direction. The concave portion 37 has a cross-sectional dovetail shape that is gradually widened as it goes to the bottom side (as it gets deeper), and is equally spaced in the circumferential direction, specifically with an angular difference of 90 degrees in the circumferential direction. Four are formed.

  Subsequently, the rear holder 50 will be described. The rear holder 50 is made of synthetic resin and has a cap shape, specifically a bottomed cylindrical shape, as shown in FIG. 4 or FIG. 5, and is attached to the mounting portion 15 from the rear. The rear holder 50 includes a substantially disc-shaped back wall 53 and a substantially cylindrical peripheral wall 54 protruding forward from the periphery of the back wall 53, and the peripheral wall 54 can be externally fitted to the mounting portion 15. The opening of the attachment portion 15 can be closed, and the seal member 98 is prevented from coming off.

  An electric wire through hole 55 through which the electric wire W is inserted is provided at the center of the back wall 53. The back wall 53 is formed with a cylindrical portion 56 that has a trapezoidal shape in a plan view and has a substantially truncated cone shape as a whole so as to protrude rearward. Specifically, the cylindrical portion 56 has a tapered shape as a whole, has an electric wire through hole 55 and can be opened in the inner space of the attachment portion 15, and the inner peripheral surface of the electric wire through hole 55 is a rear holder. The diameter is gradually reduced from the base end connected to the rear wall 53 of 50 toward the protruding end. The rear portion of the seal member 98 is fitted into the electric wire through hole 55 of the cylindrical portion 56.

  Here, as shown in FIGS. 6 and 7, the seal member 98 is fitted into the inner space of the attachment portion 15, and is in close contact with the outer peripheral surface of the electric wire W and is also in close contact with the inner peripheral surface of the attachment portion 15. The seal main body 96 and the steady main body 96 are connected integrally to the outer peripheral surface of the electric wire W and are also attached to the inner peripheral surface of the electric wire through hole 55 in the cylindrical portion 56 (rear holder 50). 94, the steady rest portion 94 and the seal main body portion 96 are juxtaposed in the front-rear direction (axial direction). The seal body 96 is formed with a thickness that fills the space existing between the outer peripheral surface of the electric wire W and the inner peripheral surface of the mounting portion 15, and a plurality of seal main bodies 96 are provided along the circumferential direction on the inner peripheral surface and the outer peripheral surface. It has a strip lip 93. When the seal member 98 is attached to the attachment portion 15, the lip 93 is attached in a state compressed in the thickness direction with respect to the outer peripheral surface of the electric wire W and the inner peripheral surface of the attachment portion 15.

  The steady rest portion 94 does not have a portion corresponding to the lip 93, and the inner peripheral surface and the outer peripheral surface thereof are flat surfaces without unevenness. The steady rest 94 protrudes coaxially with the seal member 96 from the center of the rear surface of the seal main body 96 toward the rear, and the inner peripheral surface thereof is connected to the inner peripheral surface of the seal main body 96 without a step. The electric wire contact surface 94A is disposed substantially horizontally. Further, the steady rest portion 94 has a cone shape corresponding to the shape of the cylindrical portion 56, the inner peripheral surface thereof is a circumferential surface along the outer peripheral surface of the electric wire W, and the outer peripheral surface thereof is the inner peripheral surface of the cylindrical portion 56. A tapered surface along the surface (the inner peripheral surface of the wire through-hole 55) is used. In the natural state, the inner peripheral surface of the steadying portion 94 has an inner diameter that is slightly smaller than the outer diameter of the electric wire W, and the outer circumferential surface of the steadying portion 94 has an outer diameter that is slightly larger than the inner diameter of the cylindrical portion 56. Yes. Therefore, when the seal member 98 is attached to the attachment portion 15, the steady rest portion 94 is in close contact with the outer peripheral surface of the electric wire W and the inner peripheral surface of the cylindrical portion 56, and is tightly held in a state of being crushed between both surfaces. The With the steady rest portion 94, the electric wire W in the cylindrical portion 56 is maintained in a state of being extended along the front-rear direction (axial direction) without being bent and deformed.

  Further, an inner fitting portion 58 is formed on the inner surface (front surface) of the inner wall 53 at a position that is further forward than the outer peripheral edge portion by leaving the outer peripheral edge portion of the inner surface. The inner fitting portion 58 has an outer peripheral edge that forms an arc concentric with the inner wall 53 and an inner peripheral edge that communicates with the cylindrical portion 56, and the inner surface thereof is a flat surface that is cut substantially vertically, and comes into contact with the rear surface of the seal member 98. It is possible to arrive in the state. The inner fitting portion 58 is closely fitted in the attachment portion 15, and the outer peripheral surface thereof can be in close contact with the inner peripheral surface of the attachment portion 15. A space between the outer peripheral surface of the inner fitting portion 58 and the inner peripheral surface of the attachment portion 15 is a fitting space in which the rear end opening edge of the attachment portion 15 can be fitted.

  At the lower end portion of the peripheral wall 54, a bulged portion 61 having a cross-sectional gate shape bulging outward in the radial direction is formed, and a guide receiving groove 52 is formed in the bulged portion 61 so as to extend in the front-rear direction. ing. When the rear holder 50 is mounted on the mounting portion 15, the guide protrusions 36 enter the guide receiving grooves 52 of the bulging portion 61, so that rotation of the rear holder 50 around the axis is prevented and the mounting operation of the rear holder 50 is performed. Guided. Further, if the attachment portion 15 is to be attached to the rear holder 50 without taking the normal posture, the bulging portion 61 interferes with the rear end opening edge of the attachment portion 15, so that further attachment operation is restricted. It is possible to recognize that the posture of the rear holder 50 is irregular when the mounting of the rear holder 50 is started.

  A pair of lock pieces 51 that can be elastically locked to the lock receiving portion 34 of the mounting portion 15 are formed on both the left and right sides of the peripheral wall 54. The lock piece 51 has a gate-shaped frame shape, and can be bent and deformed inward and outward between a pair of upper and lower slits 62 that open to the front end of the peripheral wall 54 and extend rearward. The lock piece 51 has a locking groove 63 that extends in the front-rear direction while leaving the front end of the lock piece 51 and opens at the rear end. In the process of attaching the rear holder 50 to the mounting portion 15, the front end portion of the lock piece 51 rides on the lock receiving portion 34 to bend and deform the lock piece 51. When the rear holder 50 is properly attached, the lock piece 51 is elastically restored. However, the lock receiving portion 34 is fitted into the locking groove 63, whereby the rear holder 50 is locked to the attachment portion 15 in a detachment restricted state.

A plurality of leading end widening convex portions 64 are provided on the inner peripheral surface of the peripheral wall 54 at intervals in the circumferential direction so that the leading end side is wider than the root side. Specifically, the tip widening convex portion 64 has a cross-sectional trapezoidal shape that is gradually widened from the root to the tip, specifically a cross-section isosceles trapezoidal shape, and is equally spaced in the circumferential direction, specifically with an angular difference of 90 degrees, There are four in all. The tip widening convex portion 64 is located at a position facing the concave portion 37 when the rear holder 50 faces the mounting portion 15, and can be jointly engaged with the concave portion 37, and is engaged with the concave portion 37 in the radial direction. Fit.
Further, a groove 65 is formed on the outer peripheral surface of the peripheral wall 54 at a position corresponding to the tip widening convex portion 64 described above so as to be back-to-back with the tip widening convex portion 64. The concave groove 65 has a circular arc cross section and is formed along the front-rear direction. Specifically, the concave groove 65 is formed over the entire length of the front-rear length of the peripheral wall 54.

  Next, the assembly procedure of this embodiment will be described. First, the terminal fitting 30 connected to the end of the electric wire W is inserted into the cavity 16 of the female housing 10. The terminal fitting 30 enters the tower portion 13 from the mounting portion 15 and is elastically locked by the lance 17 on the tower portion 13 side.

  Then, the seal member 98 fitted to the end of the electric wire W is fitted and held in the attachment portion 15, and the rear holder 50 through which the electric wire W is passed through the electric wire through hole 55 is rearwardly mounted on the outer peripheral surface of the attachment portion 15. Cover from. At that time, the guide protrusions 36 of the attachment portion 15 are made to enter the entrance (opening) of the guide receiving groove 52 of the rear holder 50, and the tip widening protrusion 64 of the rear holder 50 is made to enter the opening (opening) of the recess 37 of the attachment portion 15. Let it enter. In this case, by positioning the concave groove 65 formed on the outer peripheral surface of the rear holder 50 corresponding to the concave portion 37 on the other side, the tip widening convex portion 64 can be aligned with the concave portion 37 and accurately fitted. Become. When the rear holder 50 is pushed and moved forward along the concave portion 37 from this state, the frame portion 35 of the mounting portion 15 enters the slit 62 of the peripheral wall 54 from the front, and the tip of the lock piece 51 is connected to the lock receiving portion 34. Riding on the guide surface while sliding, the lock piece 51 is bent and deformed. When the rear holder 50 is put on the mounting portion 15 at a normal depth, the inner fitting portion 58 of the back wall 53 fits into the rear end opening edge of the mounting portion 15, and the seal member 98 held in the mounting portion 15. In addition to being prevented from coming off, the lock receiving portion 34 is fitted into the locking groove 63 as the lock piece 51 is elastically restored. The lock piece 51 is engaged with the engagement surface of the lock receiving portion 34 in the direction in which the rear holder 50 is detached, and thus the rear holder 50 is reliably prevented from coming off. Further, when the rear holder 50 is normally attached to the mounting portion 15 in this way, the rear holder 50 is brought into close contact with the outer peripheral surface of the seal member 98 from the inner surface of the back wall 53 to the inner surface of the cylindrical portion 56.

  Next, the tower portion 13 is fitted into the hood portion 91 of the male housing 90 on the other side. When the male and female housings 10, 90 are properly fitted to each other, the lock arm 12 elastically locks the lock portion 95, and the housings 10, 90 are locked. When the housings 10 and 90 are properly fitted, the male tab 92 is inserted into the main body 31 of the terminal fitting 30 at a normal depth, and the connection between the terminal fittings 30 and 92 is taken. The inner peripheral surface of the hood portion 91 is brought into close contact with the outer peripheral surface of the seal ring 97 and a seal between the housings 10 and 90 is taken.

  By the way, even if the electric wire W led out from the female housing 10 is shaken in the axis crossing direction after the two housings 10 and 90 are fitted, the electric wire W is placed on the seal member 98 at a position corresponding to the cylindrical portion 56 of the rear holder 50. Since it is held in the play-restricted state by the steady rest portion 94, the electric wire W does not vibrate in the mounting portion 15, and the terminal fitting 30 connected to the end of the electric wire W does not vibrate.

  As described above, according to the present embodiment, when both the male and female housings 10 and 90 are in the normal fitting state, even if the electric wire W led out to the outside of the female housing 10 is shaken, it is fitted to the electric wire W. The steady rest portion 94 of the attached seal member 98 is in close contact with the outer peripheral surface of the electric wire W, and is also in close contact with the inner peripheral surface of the electric wire through hole 55, thereby vibrating the electric wire W in the female housing 10, and thus the terminal fitting 30. Therefore, it is possible to avoid a situation in which both terminal fittings 30 and 92 are in sliding contact with each other. Thereby, the connection position of both the terminal metal fittings 30 and 92 is kept constant, and connection reliability is improved. In this case, since the clearance existing between the electric wire through hole 55 and the electric wire W is filled with the seal member 98, the electric wire penetrating as compared with the case where the outer peripheral surface of the electric wire W is directly adhered to the inner peripheral surface of the electric wire through hole 55. There is a merit that the positional accuracy deviation that may occur between the hole 55 and the electric wire W can be absorbed. That is, when the outer peripheral surface of the electric wire W is brought into close contact with the inner peripheral surface of the electric wire through hole 55, if the hole diameter of the electric wire through hole 55 and the outer diameter of the electric wire W are deviated from a predetermined value due to a dimensional error, Although the close contact state between the inner peripheral surface of the through hole 55 and the outer peripheral surface of the electric wire W cannot be secured, according to the present embodiment, the hole diameter of the electric wire through hole 55 and the outer diameter of the electric wire W deviate from a predetermined value due to a dimensional error. Even if the seal member 98 is retractable between the wire through hole 55 and the wire W, the error can be absorbed. Therefore, the inner peripheral surface of the wire through hole 55 and the wire W A close contact state with the outer peripheral surface can be secured.

  Further, the rear holder 50 is formed with a cylindrical portion 56 having an electric wire through hole 55 projecting rearward, and the steadying portion 94 is in close contact with the inner peripheral surface of the electric wire through hole 55 in the cylindrical portion 56. Will hit the cylinder portion 56 for a long time in its length range, and vibration in the female housing 10 can be reliably suppressed.

  Further, the inner peripheral surface of the wire through hole 55 in the cylindrical portion 56 has a tapered shape tapered toward the rear, and the outer peripheral surface of the steady rest portion 94 has a tapered shape corresponding to the inner peripheral surface of the wire through hole 55. Therefore, when the electric wire W drawn out from the electric wire through hole 55 is shaken, the fulcrum portion of the shake is tightly held and suppressed by the steadying portion 94. Therefore, the vibration force of the electric wire W is not easily transmitted to the connecting portion of both the terminal fittings 30 and 92, and the connection reliability is further improved.

<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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the said embodiment, although the cylinder part was provided in the rear holder, according to this invention, the cylinder part does not need to be provided in the rear holder. In this case, the seal main body of the seal member may be in close contact with the inner peripheral surface of the wire through hole in the rear wall of the rear holder.
(2) In the above embodiment, the seal member is made of rubber. However, according to the present invention, the seal member may be made of gel.
(3) The present invention can also be applied to a case where a seal member is fitted to a rear portion of a male housing that accommodates a male terminal fitting, and a rear holder is covered.

In this embodiment, the side sectional view of the connector in the mating state with the mating connector Side view of connector in mating condition with mating connector Side view of female housing Side cross section of rear holder Front view of rear holder Side sectional view of seal member Side view of seal member

Explanation of symbols

F ... Connector W ... Wire 10 ... Female housing (connector housing)
DESCRIPTION OF SYMBOLS 11 ... Guide receiving part 13 ... Tower part 15 ... Mounting part (opening part)
DESCRIPTION OF SYMBOLS 30 ... Terminal metal fitting 50 ... Rear holder 53 ... Back wall 55 ... Electric wire through-hole 56 ... Tube part 91 ... Hood part 92 ... Male tab 94 ... Stabilization part 96 ... Seal main-body part 98 ... Seal member

Claims (3)

A connector housing that can accommodate a terminal fitting connected to the end of the wire;
A sealing member that seals the inside of the connector housing by being fitted into the opening that is fitted to the electric wire and that is open to the rear surface of the connector housing;
A rear holder that has a wire through-hole for penetrating the electric wire and is pressed against the connector housing from behind to restrict the seal member from being pulled out;
The seal member is in close contact with the outer peripheral surface of the electric wire and is in close contact with the inner peripheral surface of the opening of the connector housing, and is also in close contact with the outer peripheral surface of the electric wire and in the rear holder. The connector according to claim 1, wherein a steadying portion that is in close contact with the inner peripheral surface of the wire through hole is provided side by side. The rear holder is formed with a cylindrical portion having the wire through hole projecting rearward, and the steadying portion is in close contact with an inner peripheral surface of the wire through hole in the cylindrical portion. The connector according to claim 1. The inner peripheral surface of the wire through hole in the cylindrical portion is tapered toward the rear end of the cylindrical portion, and the outer peripheral surface of the steadying portion is on the inner peripheral surface of the wire through hole. The connector according to claim 2, wherein the connector has a corresponding tapered shape.

Images