JP2015220023A - Waterproof connector - Google Patents

Abstract

A manufacturing cost is reduced while suppressing rattling of a rubber plug and a terminal fitting in a cavity. A rubber plug 30 is fixed to a terminal of an electric wire W together with a female terminal 20 and fitted into a diameter-enlarging cavity 45 when the female terminal 20 is inserted into a cavity 44 of a female housing 40 from the rear. In the female connector 10, the rubber plug 30 is provided on the outer periphery of the rubber plug main body 31 and the outer peripheral surface of the rubber plug main body 31. A lip 34 and an annular protrusion 36 protruding from the outer peripheral surface of the rubber plug body 31 are provided. The female housing 40 is protruded from the inner peripheral wall 45 </ b> A of the diameter-enlarging cavity 45, and the annular protrusion 36 is It is characterized in that it has a pressing rib 50 that increases the elastic repulsion force of the portion where the annular protrusion 36 is disposed in the rubber plug body 31 by pressing. [Selection] Figure 3

Description

  The technique disclosed by this specification is related with the waterproof connector provided with the rubber stopper.

  For example, as a waterproof connector provided with a rubber plug that is fixed to a terminal of an electric wire together with a terminal fitting and fitted into the cavity from the rear when the terminal fitting is inserted into a cavity provided in the female housing, Japanese Patent Application Laid-Open No. 2005-2005 The one described in Japanese Patent No.-5035 (Patent Document 1) is known. This rubber plug is formed by two-color molding consisting of a low-hardness rubber material and a high-hardness rubber material, the front side is a seal portion made of a low-hardness rubber material, and the rear side is made of a high-hardness rubber material It becomes the rattling prevention part. When the rubber plug is fitted into the cavity, the seal part seals between the electric wire and the inner peripheral surface of the cavity, and the rattling prevention part abuts against the inner peripheral surface of the cavity with a greater pressing force than the seal part. As a result, rattling in the cavity of the rubber plug due to vibration from the electric wire is suppressed.

JP 2005-5035 A

By the way, since this rubber plug is formed by two-color molding using two types of rubber materials of low hardness and high hardness, the molding apparatus becomes more expensive than the case of molding using one type of rubber material. Manufacturing costs increase.
On the other hand, when the entire rubber plug is formed of a rubber material having high hardness, the sealing performance is lowered. In addition, if the entire rubber plug is molded from a low-hardness rubber material, rattling in the cavity of the rubber plug due to vibration from the wire cannot be suppressed, and the vibration is transmitted to the terminal metal fitting. It slides with the mating terminal and the contact part wears out.

  The present specification discloses a technique for reducing the manufacturing cost while suppressing the rattling of the rubber plug and the terminal fitting in the cavity.

  The technique disclosed by this specification is fixed to the terminal of the electric wire together with the terminal fitting, and is fitted to the rear of the terminal fitting in the cavity as the terminal fitting is inserted into the cavity provided in the housing from the rear. The rubber plug includes a rubber plug main body that is externally fitted to the electric wire, and is provided around the outer peripheral surface of the rubber plug main body, and is provided around the inner peripheral wall of the cavity. A lip that adheres elastically; and a projecting portion that projects from the outer peripheral surface of the rubber plug body and is disposed along the lip; and the housing projects from an inner peripheral wall of the cavity. When the rubber plug reaches the normal position of the cavity, the elastic repulsive force of the portion of the rubber plug body where the protrusion is disposed is pressed on the rubber plug body by pressing the protrusion. Oh The lip has a characterized in that has a pressing portion be higher than the elastic repulsive force of the arranged portions that.

  According to such a configuration, by pressing the protruding portion by the pressing portion, the elastic repulsive force of the portion where the protruding portion is disposed in the rubber plug body is higher than the elastic repulsive force of the portion where the lip is disposed. Since the rubber plug body of the portion where the protruding portion is disposed is firmly fixed to the housing, it is possible to prevent the rubber plug from rattling due to vibration from the electric wire. That is, since the rubber plug formed of one kind of rubber material can prevent the terminal fitting from vibrating while ensuring the sealing performance of the lip, the manufacturing cost can be reduced.

As an aspect of the technology disclosed by this specification, the following configurations are preferable.
The protruding portion may be arranged on the terminal fitting side with respect to the lip.
According to such a configuration, the rubber plug main body is fixed to the housing near the terminal fitting, and vibration can be suppressed near the terminal fitting. For example, the protruding portion is arranged behind the lip. Compared with the case where it exists, it can further suppress that a terminal metal fitting vibrates.

It is good also as a structure provided with the guide part which inclines toward the axial center of the said cavity toward the rear end part of the said press part toward the front.
According to such a configuration, when the rubber plug reaches the normal position of the cavity, the protruding portion is guided by the guide portion and rides on the pressing portion. The rubber stopper can be inserted smoothly.

The rubber plug may have a configuration in which the outer diameter of the portion where the protrusion is provided is smaller than the inner diameter of the cavity.
According to such a configuration, when the rubber plug is fitted into the cavity, the inner wall of the cavity and the protruding portion do not interfere with each other, so that the rubber plug is inserted immediately before the protruding portion is pressed by the pressing portion. Resistance can be reduced.

The protruding portion is formed on the outer peripheral surface of the rubber plug main body over the entire circumference, and the pressing portion is formed in a rib shape extending along the cavity, and a plurality of the pressing portions are circumferentially formed on the inner peripheral wall of the cavity. It is good also as a structure arranged.
According to such a configuration, since the area where the pressing portion presses the protruding portion is reduced, it is possible to reduce the insertion resistance of the rubber plug when the rubber plug reaches the normal position of the cavity.

The protruding portion may be formed on the outer peripheral surface of the rubber plug main body over the entire circumference, and the pressing portion may be formed on the inner peripheral wall of the cavity over the entire circumference.
According to such a configuration, since the pressing portion presses the protruding portion over the entire circumference, the rubber plug body of the portion where the protruding portion is disposed can be firmly fixed to the housing.

  According to the technology disclosed in this specification, it is possible to reduce the manufacturing cost while suppressing the rattling of the rubber plug and the terminal fitting in the cavity.

Sectional drawing which shows the state before inserting a female terminal in the female housing which concerns on Embodiment 1. FIG. Sectional drawing which shows the state before the fitting of a female connector and a male connector Sectional drawing which shows the state after the fitting of a female connector and a male connector AA line sectional view of FIG. Sectional drawing equivalent to the cross section of the female connector which concerns on Embodiment 2 of FIG.

<Embodiment 1>
The first embodiment will be described with reference to FIGS. 1 to 4.
This embodiment illustrates the waterproof female connector 10 that is fitted to the male connector 60. In the following description, the vertical direction is based on the vertical direction in FIG. Further, the front-rear direction is described with reference to the left-right direction in FIG.

  As shown in FIGS. 1 to 3, the male connector 60 is formed integrally with a device (not shown), and includes a male housing 61 made of synthetic resin and a pair of male terminals 62 held by the male housing 61. Configured. The male housing 61 is formed in a hood shape that opens forward, and a lock projection 63 that protrudes upward is formed on the upper surface of the male housing 61. Each male terminal 62 has a flat plate shape and is held side by side in a vertically protruding manner from the back wall of the male housing 61.

As shown in FIGS. 1 to 3, the female connector 10 includes a pair of female terminals 20 connected to the end of the electric wire W, a rubber plug that is externally fitted to the electric wire W and fixed together with the female terminals 20,
A synthetic resin female housing 40 that houses a rubber plug 30 together with a pair of female terminals 20 is provided.

  The female housing 40 is configured such that a hood portion 42 is formed around the front half portion of the terminal accommodating portion 41 that accommodates the female terminal 20, and the male connector 60 is interposed between the terminal accommodating portion 41 and the hood portion 42. The male housing 61 can be fitted. An annular rubber ring R is fitted on the outer peripheral surface of the terminal accommodating portion 41 in the hood portion 42. When the male housing 61 and the female housing 40 are fitted, the rubber ring R is used as shown in FIG. The space between the outer peripheral surface of the terminal accommodating portion 41 and the inner peripheral surface of the male housing 61 is sealed.

  As shown in FIGS. 1 to 3, an elastically displaceable lock arm 43 is formed on the upper surface of the terminal accommodating portion 41. When the male housing 61 and the female housing 40 are fitted, the lock arm 43 The locking projection 63 of the male housing 61 is locked in the front-rear direction so that the female housing 40 and the male housing 61 are held in a fitted state.

  In the terminal accommodating part 41, a pair of cavities 44 for accommodating the rubber plug 30 together with the female terminal 20 from the rear are formed side by side. The rear part of each cavity 44 from the substantially central part in the front-rear direction is a diameter-enlarged cavity 45 that is slightly larger in diameter than the front part of the cavity 44, and the rear end of the female terminal 20 is located at the rear part of the enlarged-diameter cavity 45. The part and the rubber plug 30 are accommodated.

  Further, a lance 46 that is cantilevered forward is formed on the bottom surface 44 </ b> A of the cavity 44, and this lance 46 is elastic toward the bending space S provided below the lance 46. Displaceable. When the female terminal 20 is inserted into the cavity 44, the lance 46 is elastically displaced toward the bending space S by being pressed by the female terminal 20 from the rear, and the female terminal 20 reaches the normal position of the cavity 44. Then, by elastically returning, it fits into a locking hole 21A of the female terminal 20 to be described later, and the female terminal 20 is prevented from coming off into the female housing 40.

  As shown in FIGS. 1 and 2, a front retainer 47 can be attached to the front end portion of the terminal accommodating portion 41. The front retainer 47 includes an elastic blocking piece 48 that enters the bending space S from the front, and a retaining portion 49 that is disposed in front of the rubber ring R. When the front retainer 47 is attached to the terminal accommodating portion 41, the elastic blocking piece 48 enters the bending space S from the front to prevent the elastic displacement of the lance 46 downward, and the retaining portion 49 is the terminal accommodating portion. The rubber ring R attached to 41 is retained from the front.

As shown in FIGS. 1 to 3, each female terminal 20 is formed by pressing a metal plate having excellent conductivity. The female terminal 20 has a configuration in which an electric wire connecting portion 22 connected to the electric wire W is provided behind the terminal connecting portion 21 having a rectangular tube shape.
An elastic contact piece (not shown) folded back from the lower edge of the front end of the terminal connection portion 21 is formed in the terminal connection portion 21, and when the female housing 40 and the male housing 61 are fitted, the terminal The male terminal 62 of the male connector 60 is inserted into the connection portion 21 through the front end opening of the terminal accommodating portion 41, and the elastic contact piece makes elastic contact with the male terminal 62, so that the female terminal 20 and the male terminal 62 are Are electrically connected. The bottom plate of the terminal connection portion 21 is formed with a locking hole 21A into which the lance 46 is fitted from below, penetrating the bottom plate in the plate thickness direction.

The electric wire W has a structure in which the outer periphery of the core wire W1 is covered with an insulating coating W2.
The electric wire connecting portion 22 includes a wire barrel 23 and an insulation barrel 24 provided behind the wire barrel 23.
The wire barrel 23 is crimped and crimped to the core wire W1 exposed by peeling off the insulating coating W2 at the end of the electric wire W.
The insulation barrel 24 fixes the rubber plug 30 to the end of the electric wire W by being wound around the rubber plug 30 fitted around the end of the insulating coating W2 of the electric wire W and crimped.

  The rubber plug 30 is made of a material such as oil-impregnated silicon, and has a cylindrical rubber plug main body 31 that is long in the front-rear direction, as shown in FIGS. The rubber plug main body 31 can be fitted into the enlarged diameter cavity 45 in the terminal accommodating portion 41 from the rear, and the insulating coating W2 of the electric wire W is inserted into the rubber plug main body 31 in the front-rear direction.

  A cylindrical terminal crimping portion 32 to which the insulation barrel 24 of the female terminal 20 is crimped is continuously provided in front of the rubber plug body 31, and the insulation barrel 24 is crimped as shown in FIG. The outer diameter dimension of the terminal crimping portion 32 in the state is set smaller than the outer diameter dimension of the rubber plug main body 31. A flange 33 is provided around the front end edge of the terminal crimping portion 32 to prevent the insulation barrel 24 crimped to the terminal crimping portion 32 from coming off.

  As shown in FIGS. 2 and 3, the outer peripheral lip 34 that elastically adheres to the inner peripheral wall 45 </ b> A of the diameter-enlarging cavity 45 of the terminal accommodating portion 41 is provided on the outer peripheral surface at the substantially central portion in the front-rear direction of the rubber plug body 31. Is provided in a protruding manner. The outer peripheral lip 34 has a mountain shape in cross section and is formed in an annular shape over the entire periphery, and is formed in a double manner with a gap in the front and rear direction. When the rubber plug 30 is fitted into the enlarged diameter cavity 45, the apex portion of each outer peripheral lip 34 is crushed and adhered by the inner peripheral wall 45 A of the enlarged diameter cavity 45, and the outer peripheral surface of the electric wire W and the enlarged diameter cavity 45. The inner peripheral wall 45A is sealed by the rubber plug 30.

  The rear end portion of the rubber plug main body 31 is a large diameter portion 35 that closely fits to the rear end portion of the diameter-enlarging cavity 45. The large-diameter portion 35 is closely fitted to the enlarged-diameter cavity 45 at the rear of the outer peripheral lip 34, so that when the electric wire W led out from the rubber plug 30 is bent, the enlarged-diameter cavity 45 A gap is prevented from being formed between the inner peripheral wall 45A and the outer peripheral lip 34.

  Now, between the terminal crimping part 32 and the outer peripheral lip 34 on the outer peripheral surface of the rubber plug main body 31, as shown in FIGS. 1 to 3, an annular protrusion arranged along the outer peripheral lip 34 over the entire periphery. A portion 36 is provided around. The outer diameter of the annular protrusion 36 is larger than the outer diameter of the terminal crimping part 32 to which the insulation barrel 24 is crimped, and is slightly between the inner peripheral wall 45A of the diameter-enlarging cavity 45 in the terminal accommodating part 41. The size is set to have a clearance. Therefore, when the rubber plug 30 is fitted into the enlarged diameter cavity 45, the annular protrusion 36 is smoothly fitted without interfering with the inner peripheral wall 45A of the enlarged diameter cavity 45.

  On the other hand, on the inner peripheral wall 45A of the diameter expansion cavity 45 in the terminal accommodating portion 41 of the female housing 40, when the rubber plug 30 reaches the normal position of the diameter expansion cavity 45, as shown in FIGS. A plurality of (four in this embodiment) pressing ribs 50 are provided in the circumferential direction to press the annular protrusion 36 of the rubber plug 30 from the radially outer side toward the axial center of the rubber plug 30.

  As shown in FIG. 4, of the plurality of pressing ribs 50, two pressing ribs 50 are formed on the upper and lower sides of the inner peripheral wall 45 </ b> A in the diameter-enlarging cavity 45 so as to face each other. The other two pressing ribs 50 are formed in a form facing left and right at left and right positions shifted by 90 ° in the circumferential direction from the pressing ribs 50 formed vertically.

  As shown in FIGS. 1 to 3, each pressing rib 50 is configured to extend linearly from a substantially central portion in the front-rear direction of the cavity 44 to the front of the outer peripheral lip 34 of the rubber plug 30. Is set to be approximately the same as the distance from the inner peripheral wall 45 </ b> A of the enlarged diameter cavity 45 to the outer peripheral surface of the rubber plug main body 31. Therefore, the dimension in which the annular protrusion 36 is pressed by the pressing rib 50 and is crushed inward in the radial direction is larger than that of the outer peripheral lip 34.

  In other words, when the rubber plug 30 reaches the normal position of the diameter-enlarging cavity 45, the annular protrusions 36 of the rubber plug 30 are pressed by the pressing ribs 50 from the upper, lower, left, and right directions, and the annular protrusions 36 are arranged. The elastic repulsive force of the rubber plug main body 31 in the portion is higher than the elastic repulsive force of the rubber plug main body 31 in the portion where the outer peripheral lip 34 is disposed, so that the rubber plug main body 31 in the portion where the annular protrusion 36 is disposed. Is firmly fixed to the female housing 40.

  Further, as shown in FIGS. 1 to 3, a guide portion 51 that inclines flat toward the axial center of the diameter-enlarging cavity 45 is provided at the rear end portion of each pressing rib 50 as shown in FIGS. 1 to 3. Therefore, when the rubber plug 30 reaches the normal position of the diameter-enlarging cavity 45, the annular protrusion 36 is guided toward the axis of the diameter-enlarging cavity 45 by the guide part 51 and rides on each pressing rib 50. The rubber plug 30 can be smoothly inserted to the proper position as compared with the case without the guide portion.

The present embodiment is configured as described above. Next, the assembly procedure of the female connector 10 will be briefly described, and the operation and effect of the female connector 10 will be described.
First, the rubber plug 30 is passed through the electric wire W first. Next, the insulation coating W2 is peeled off at the end of the electric wire W to expose the core wire W1, the wire barrel 23 in the electric wire connection portion 22 of the female terminal 20 is crimped and crimped to the core wire W1, and the insulation barrel 24 is connected to the rubber plug. It crimps and crimps | bonds to the 30 terminal crimping part 32. FIG. Thereby, the female terminal 20 and the rubber plug 30 are fixed to the end of the electric wire W side by side.

When the female terminal 20 and the rubber plug 30 are fixed to the end of the electric wire W, the female terminal 20 and the rubber plug 30 are inserted into the cavity 44 of the female housing 40 from the rear.
When the female terminal 20 reaches the proper position of the cavity 44, the lance 46 is fitted into the locking hole 21A in the terminal connecting portion 21 of the female terminal 20 and is prevented from coming off, as shown in FIG. Subsequently, by attaching the front retainer 47 to the terminal accommodating portion 41 from the front, the elastic blocking piece 48 prevents the elastic displacement of the lance 46 and prevents the rubber ring R fitted on the terminal accommodating portion 41 from coming off. It is prevented from coming off from the front by the portion 49.

Further, as the female terminal 20 is inserted to the proper position, the rubber plug 30 is fitted into the enlarged diameter cavity 45.
Here, each outer peripheral lip 34 is crushed by the inner peripheral wall 45 </ b> A of the diameter-enlarging cavity 45 so as to be in close contact with the outer peripheral surface of the electric wire W and the inner peripheral wall of the diameter-enlarging cavity 45. Seal between 45A. Further, the large-diameter portion 35 of the rubber plug 30 is closely fitted to the diameter-enlarged cavity 45, so that, for example, when the electric wire W led out from the rubber plug 30 is bent, the diameter-enlarged cavity 45. The gap between the inner peripheral wall 45A and the outer peripheral lip 34 is prevented from being generated.

  On the other hand, the annular protrusion 36 is smoothly fitted without interfering with the inner peripheral wall 45 </ b> A of the diameter-enlarging cavity 45 until reaching the pressing rib 50 in the process of inserting the rubber plug 30 into the diameter-enlarging cavity 45. When the annular projecting portion 36 reaches the position of the pressing rib 50, the annular projecting portion 36 is guided toward the axial center of the enlarged-diameter cavity 45 by the guide portion 51 of the pressing rib 50, and the annular projecting portion 36 is moved to each pressing rib. Get on 50. If the rubber plug 30 is further inserted into the diameter expansion cavity 45 and the rubber plug 30 reaches a proper position in the diameter expansion cavity 45, the annular protrusion 36 is moved in the radial direction by the pressing ribs 50 from the upper, lower, left and right directions. It is pressed toward the inside. As a result, the elastic repulsive force of the rubber plug body 31 in the portion where the annular protrusion 36 is disposed is higher than the elastic repulsive force of the rubber plug body 31 in the portion where the outer peripheral lip 34 is disposed. The rubber plug main body 31 of the arranged part will be in the state fixed with respect to the female housing 40 firmly. The female connector 10 is completed as described above.

  Next, when the female connector 10 is fitted to the male connector 60, the female connector 10 is disposed so as to face the male connector 60 and the female connector 10 with respect to the male connector 60, as shown in FIG. 2. Mate. When both the connectors 10 and 60 reach the mating positions properly, the male terminal 62 of the male connector 60 passes through the front end opening of the terminal accommodating portion 41 of the female housing 40 as shown in FIG. The female terminal 20 and the male terminal 62 are electrically connected. Further, the rubber ring R seals between the outer peripheral surface of the terminal accommodating portion 41 and the inner peripheral surface of the male housing 61, and the lock projection 63 of the male connector 60 and the lock arm 43 of the female connector 10 are engaged in the front-rear direction. By stopping, both the connectors 10 and 60 are held in the fitted state.

In this state, for example, when vibration from the electric wire W is transmitted to both the connectors 10, 60, according to the present embodiment, the annular protrusion 36 of the rubber plug 30 has a diameter by the plurality of pressing ribs 50 from the upper, lower, left, and right directions. The rubber plug main body 31 in the portion where the annular protrusion 36 is disposed is pressed inward in the direction and is firmly fixed to the female housing 40. It is possible to prevent the rubber plug 30 from rattling in the diameter-enlarged cavity 45 due to vibration from the electric wire W while securing the sealing performance between the cavity 45 and the inner peripheral wall 45A.
Accordingly, the female terminal 20 fixed together with the rubber plug 30 is prevented from vibrating in the cavity 44 due to vibration from the electric wire W, and thus wear at the connecting portion between the female terminal 20 and the male terminal 62 is suppressed. be able to. That is, the rubber plug 30 formed of one kind of rubber material can prevent the female terminal 20 from vibrating in the female housing 40 while ensuring the sealing performance of the outer peripheral lip 34. The manufacturing cost can be reduced as compared with the case where the rubber plug is made of a rubber material.

  Further, according to the present embodiment, the annular projecting portion 36 is disposed in the rubber plug main body 31 at a position closer to the female terminal 20 than the outer peripheral lip 34 and suppresses vibration near the female terminal 20. The female terminal 20 can be prevented from vibrating in the cavity 44 as compared with the case where the annular protrusion is disposed behind the outer peripheral lip.

  Further, according to the present embodiment, the outer diameter dimension of the annular protrusion 36 is set slightly smaller than the inner diameter dimension of the diameter-enlarging cavity 45, and therefore, when the annular protrusion 36 is inserted into the diameter-enlarging cavity 45. The insertion resistance of the rubber plug 30 can be reduced. In addition, the pressing rib 50 is formed only at four locations on the inner peripheral wall 45A of the enlarged cavity 45 in the upper, lower, left, and right sides, and the portions where the annular protrusion 36 is pressed are four locations on the upper, lower, left, and right sides. The region where the annular protrusion 36 is pressed by the pressing rib 50 can be reduced while supporting the rubber plug 30 so that the shaft center and the shaft center of the diameter expansion cavity 45 are coaxial. Thereby, the insertion resistance of the rubber plug 30 when the rubber plug 30 reaches the normal position of the diameter expansion cavity 45 can be reduced.

<Embodiment 2>
Next, Embodiment 2 will be described with reference to FIG.
In the second embodiment, the region that presses the annular protrusion 36 is larger than that in the first embodiment, and the configuration, operation, and effect common to the first embodiment are duplicated. Omitted. The same reference numerals are used for the same configurations as those in the first embodiment.
Unlike the pressing rib 50 of the first embodiment, a pressing portion 150 is formed on the inner peripheral wall 45A of the diameter-enlarging cavity 45 of the second embodiment over the entire circumference. Therefore, when the rubber plug 30 is fitted into the enlarged diameter cavity 45, the pressing portion 150 presses the annular protrusion 36 over the entire circumference.

  That is, according to the present embodiment, when the rubber plug 30 reaches the normal position of the diameter expansion cavity 45, the annular protrusion 36 of the rubber plug 30 is pressed over the entire circumference by the pressing portion 150. Compared with the case where the protruding portion 36 is partially pressed, the rubber plug body 31 at the portion where the annular protruding portion 36 is disposed can be firmly fixed to the female housing 40. As a result, it is possible to more reliably prevent the rubber plug 30 from rattling in the enlarged-diameter cavity 45 due to vibration from the electric wire W while ensuring the sealing performance at the outer peripheral lip 34.

<Other embodiments>
The technology disclosed in this specification is not limited to the embodiment described with reference to the above description and drawings, and for example, the following embodiments are also included in the technical scope.
(1) In the above embodiment, the annular projecting portion 36 is disposed between the terminal crimping portion 32 and the outer peripheral lip 34. However, the present invention is not limited to this, and a configuration in which the annular projecting portion is disposed behind the outer peripheral lip may be employed.
(2) In the above embodiment, the annular protrusion 36 is configured by forming the protrusion on the outer peripheral surface of the rubber plug body 31 over the entire periphery. However, the present invention is not limited to this, and a configuration may be adopted in which a plurality of protrusions are provided at equal intervals on the outer peripheral surface of the rubber plug body.
(3) In the said embodiment, it comprised as the guide part 51 which inclines the back end part of the press rib 50 and the press part 150 flatly. However, the present invention is not limited thereto, and the rear end portion of the pressing rib and the pressing portion may be configured as a guide portion that is inclined in an arc shape.

10: Female connector (waterproof connector)
20: Female terminal (terminal fitting)
30: Rubber stopper 31: Rubber stopper body 34: Outer peripheral lip (lip)
36: annular protrusion (protrusion)
40: Female housing (housing)
44: Cavity 45: Diameter expansion cavity (cavity)
50: Pressing rib (pressing part)
51: Guide part 150: Pressing part W: Electric wire

Claims (6)

A waterproof connector provided with a rubber plug that is fixed to a terminal of an electric wire together with a terminal fitting, and that is fitted to the rear of the terminal fitting in the cavity as the terminal fitting is inserted from behind into a cavity provided in the housing. There,
The rubber plug is a rubber plug body that is externally fitted to the electric wire;
A lip that protrudes from the outer peripheral surface of the rubber plug body and elastically adheres to the inner peripheral wall of the cavity;
Projecting on the outer peripheral surface of the rubber plug main body, and having a projecting portion disposed along the lip;
The housing protrudes from the inner peripheral wall of the cavity, and when the rubber plug reaches a proper position of the cavity, the protrusion is pressed on the protrusion so that the protrusion in the rubber plug main body is arranged. The waterproof connector which has a press part which makes the elastic repulsion force of the part raised higher than the elastic repulsion force of the part in which the said lip in the said rubber plug main body was arrange | positioned.   The waterproof connector according to claim 1, wherein the protruding portion is disposed on the terminal fitting side with respect to the lip.   The waterproof connector according to claim 1, wherein a guide portion that is inclined toward the axial center of the cavity is provided at a rear end portion of the pressing portion toward the front.   The waterproof connector according to any one of claims 1 to 3, wherein an outer diameter of a portion of the rubber plug where the protruding portion is provided is smaller than an inner diameter of the cavity. The protruding portion is formed over the entire circumference on the outer peripheral surface of the rubber plug body,
The waterproof connector according to any one of claims 1 to 4, wherein the pressing portion is formed in a rib shape extending along the cavity, and a plurality of the pressing portions are arranged in a circumferential direction on an inner peripheral wall of the cavity. The protruding portion is formed over the entire circumference on the outer peripheral surface of the rubber plug body,
The waterproof connector according to any one of claims 1 to 4, wherein the pressing portion is formed on an inner peripheral wall of the cavity over the entire periphery.

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