JP2015069787A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector improved in sealability.SOLUTION: A connector 1 includes a housing 11 for housing a plurality of terminal-equipped electric wires 14, a mat seal 12 formed from an elastic material and provided inside the housing 11, and a seal cover 13 for supporting the mat seal 12 by pressing and crushing the mat seal 12 in the housing 11. The mat seal 12 is configured to include a water stop part 120 for stopping water by closely adhering to an inner surface of the housing 11, and a plurality of wire insertion holes 122, 123 for inserting the plurality of terminal-equipped electric wires 14 respectively in a direction from the outside of the housing 11 to the inside thereof. A step part 113 projecting to the inside is formed on the inner surface of the housing 11. The water stop part 120 includes a tapered surface which is abutted against a corner of the step part 113 on the side of an opening at an inner edge of the step part 113 and is inclined in a direction separating from the opening as it goes toward inside of the housing 11.

Description

  The present invention relates to a connector provided at a terminal of a wire harness.

  A wide variety of electronic devices are mounted on automobiles as moving bodies. These electronic devices are connected by a wire harness in order to transmit electric power, a control signal, etc. between each other. The wire harness includes an electric wire bundle in which a plurality of electric wires are bundled, and a connector attached to an end of the electric wire bundle. As such a connector, a connector including a housing that houses a plurality of electric wires with terminals and a sealing member that is provided inside the housing and prevents water from entering from outside is known (for example, a patent) References 1 and 2).

Special table 2008-536276 gazette JP 2009-117389 A

  However, a waterproof connector having a sealing member is required to further improve the sealing performance.

  Therefore, an object of the present invention is to provide a connector with improved sealing performance.

  In order to achieve the above object, the connector according to claim 1 has a cylindrical shape having one end opened and the other end closed, and a housing accommodating a plurality of electric wires with terminals, and being fitted from the opening of the housing. A seal member formed of an elastic material provided inside the housing; and a support member that supports the seal member in the housing while pressing and crushing the seal member into the housing. The connector is a connector, wherein the sealing member includes a water stop portion that stops water tightly against an inner surface of the housing, and a plurality of electric wire insertions that allow the plurality of electric wires with terminals to be inserted in a direction from the outside toward the inside of the housing. A step portion projecting inward is formed on the inner surface of the housing, and the water stop portion is formed on the opening side of the inner edge of the step portion. With contact at the corner, characterized in that it is formed with a tapered surface inclined in a direction away from the opening toward to the inside of the housing.

  The connector according to claim 2 is the connector according to claim 1, wherein the support member side is a flat surface, and a pressing force is applied to the flat surface from the support member. Features.

  The connector according to claim 3 is the connector according to claim 1 or 2, wherein the housing side taper surface inclined along the taper surface of the seal member at a corner on the opening side of the inner edge of the stepped portion. Is formed.

  In the connector according to the first aspect, the taper surface of the water stop portion is pressed against and closely contacts the opening-side corner of the inner edge of the step portion by the pressing of the seal member from the support member. Due to this close contact, the water stop portion exhibits a sealing property. Here, the seal member is crushed by the pressing of the support member. Then, due to this crushing, an expansion force is generated on the seal member to expand in a direction orthogonal to the pressing direction. In addition to the force in the pressing direction of the support member, this expansion force is also applied to the tapered surface. Since the taper surface is pressed against the corner of the stepped portion by the force in these two directions, a high closeness between them is obtained, and as a result, the sealing performance is improved by the water stop portion. Yes. That is, the connector described in claim 1 has improved sealing performance.

  According to the connector described in claim 2, the seal member has a flat surface on the support member side, and a pressing force is applied to the flat surface from the support member. For this reason, the expansion force generated in the seal member is larger than that in the case where, for example, the support member has irregularities and a pressing force is partially applied from the support member. According to the connector described in claim 2, the expansion force in the in-plane direction can be increased by pressing on the flat surface on the support member side. As a result, the close contact between the tapered surface and the corner of the stepped portion is improved, and the sealing performance by the water stop portion is improved.

  According to the third aspect of the present invention, the housing-side tapered surface that is inclined along the tapered surface of the seal member is formed at the opening-side corner of the inner edge of the stepped portion. Thereby, when the sealing member is pressed by the support member, the tapered surface of the sealing member and the housing-side tapered surface come into contact with each other. According to the connector described in claim 3, due to the contact on this surface, the closeness between the two is enhanced, and also in this respect, the sealing performance is improved.

It is a disassembled perspective view of the connector concerning the embodiment of the present invention. It is the rear view seen from the arrow D1 direction in FIG. 1 of the connector shown by FIG. FIG. 3 is a cross-sectional view of the connector shown in FIG. 1 taken along section line AA in FIG. 2. It is a figure which expands and shows the sealing member shown by FIGS. It is a figure which shows the cross section equivalent to the cross section shown by FIG. 4 of the sealing member. It is a figure which expands and shows the contact part of a sealing member and a housing. FIG. 6 is an enlarged cross-sectional view of a small-sized wire insertion hole shown in FIG. 5. It is a figure which shows another example of seal piece shape.

  A connector according to an embodiment of the present invention will be described with reference to FIGS.

  First, the overall configuration of the connector according to the embodiment of the present invention will be described. FIG. 1 is an exploded perspective view of the connector. 2 is a rear view of the connector shown in FIG. 1 as viewed from the direction of arrow D1 in FIG. 1, and FIG. 3 is a sectional view of the connector along the cutting line AA in FIG. FIG.

  A connector 1 according to the present embodiment is provided at a terminal of a wire harness (not shown) and is connected to a counterpart connector provided in an electronic device or the like, and includes a housing 11, a mat seal 12 as a seal member, and a support And a seal cover 13 as a member.

  The housing 11 is a member made of hard resin having a substantially rectangular tube shape with one end opened, and accommodates the terminal-attached electric wire 14 with a terminal fitting (female terminal) 142 crimped to the tip of the electric wire portion 141. Inside the housing 11, a terminal accommodating chamber 112 that accommodates the terminal fittings 142 of the plurality of electric wires 14 with terminals is formed toward the side opposite to the opening 111 side. The terminal accommodating chamber 112 is provided with a plurality of accommodating holes in which the respective terminal fittings 142 are accommodated in a state where they are prevented from being detached. In the present embodiment, as the electric wire 14 with a terminal, two types of electric wires 14 with a terminal having different sizes such as the thickness of the electric wire portion 141 and the size of the terminal fitting 142 are used. For this reason, in the terminal accommodating chamber 112, a small-sized accommodating hole 112a and a large-sized accommodating hole 112b are provided corresponding to each size of the electric wire 14 with a terminal. In this embodiment, the large-sized accommodation holes 112b are arranged in the horizontal row at the top in FIGS. 1 to 2, and the small-sized accommodation holes 112a are arranged in the horizontal three rows of 2 to 4 rows. In addition, a stepped portion 113 is formed on the inner surface of the housing 11 between the opening 111 and the terminal accommodating chamber 112 so as to project to the inside of the housing 11. Further, on the outer surface of the housing 11 near the opening 111, there are four locking projections 114 for fixing the seal cover 13 to the housing 11, two on each of the upper and lower surfaces in FIGS. Is formed. The housing 11 corresponds to an example of a housing according to the present invention.

  The mat seal 12 is a substantially rectangular plate-like member formed of an elastic material such as silicone rubber, for example, and plays a role of preventing water from entering the housing 11. The mat seal 12 is inserted from the opening 111 of the housing 11. As will be described later, the mat seal 12 is provided in the housing 11 by being sandwiched between the terminal accommodating chamber 112 and the seal cover 13.

  FIG. 4 is an enlarged view of the mat seal shown in FIGS. 1 to 3. FIG. 4A shows a plan view of the surface of the mat seal 12 facing the seal cover 13 side, and FIG. 4B shows the mat seal 12 with the arrow in FIG. A side view seen from the direction D2 is shown. FIG. 4C shows a cross-sectional view of the mat seal 12 taken along a cutting line BB in FIG.

  In the mat seal 12, the surface facing the seal cover 13 side is a flat surface, and the outer edge of the surface is a water stop portion 120 that protrudes outward over the entire circumference. As shown in FIG. 4, the water stop 120 has a tapered surface 121 formed at the base on the terminal housing chamber 112 side. The tapered surface 121 abuts against a corner on the opening 111 side at the inner edge of the step 113 shown in FIGS. 1 and 3 formed on the inner surface of the housing 11. The water-stop part 120 exhibits its sealing performance mainly by contact between the tapered surface 121 and the corner of the step part 113. Further, the mat seal 12 has a plurality of wire insertion holes through which the plurality of electric wires with terminals 14 are inserted in the direction from the outside to the inside of the housing 11, respectively, and the plurality of receiving holes 112 a and 112 b of the terminal receiving chamber 112. Is provided at a position corresponding to. In the present embodiment, large-sized wire insertion holes 123 are arranged in the uppermost horizontal row in FIGS. 1 to 4, and small-sized electric wire insertion holes 122 are arranged in two to four horizontal rows. . Further, each of the wire insertion holes 122 and 123 has an insertion inlet and an outlet that are expanded, so that the terminal-attached electric wire 14 can enter from the seal cover 13 side and advance into the accommodation hole 112a of the terminal accommodation chamber 112. It has been done smoothly. The mat seal 12 corresponds to an example of a seal member according to the present invention. Moreover, said water stop part 120 is equivalent to an example of the water stop part said to this invention, and each of the large and small size electric wire insertion holes 122 and 123 is equivalent to an example of the electric wire insertion hole said to this invention. The mat seal 12 will be described in detail later with reference to another drawing.

  The seal cover 13 shown in FIGS. 1 to 3 is a hard resin member having a substantially rectangular block shape. On the outer surface of the seal cover 13, four locking rings 131 that are hooked on the four locking protrusions 114 in the housing 11 are provided. Part of the seal cover 13 is fitted into the housing 11 through the opening 111, and the four locking rings 131 are locked to the four locking protrusions 114, thereby being fixed to the housing 11. Here, the surface of the seal cover 13 opposite to the surface shown in FIG. 2 contacts the mat seal 12. The seal cover 13 supports the mat seal 12 in the housing 11 while sandwiching the mat seal 12 with the terminal accommodating chamber 112 in the housing 11 and pressing and crushing the mat seal 12 inside. The seal cover 13 is provided with a plurality of wire insertion holes through which the plurality of electric wires with terminals 14 are inserted in the direction from the outside to the inside of the housing 11. The plurality of wire insertion holes are provided at positions corresponding to the plurality of wire insertion holes 122 and 123 of the mat seal 12 and the plurality of accommodation holes 112 a and 112 b of the terminal accommodation chamber 112 on a one-to-one basis. In this embodiment, the large-sized electric wire insertion holes 133 are arranged in the uppermost horizontal row in FIGS. 1 to 3, and the small-sized electric wire insertion holes 132 are arranged in two to four horizontal rows. . This seal cover 13 corresponds to an example of a support member according to the present invention.

  In the present embodiment, before assembling the connector 1, before attaching the mat seal 12 and the seal cover 13 to the housing 11, the wire portion 141 of the terminal-attached wire 14 is placed in the wire insertion holes 122, 123, 132, 133 of these members. It is inserted. Further, the terminal fitting 142 of the electric wire with terminal 14 is housed in the housing holes 112 a and 112 b of the terminal housing chamber 112, and then the mat seal 12 and the seal cover 13 are attached to the housing 11. This is because if the mat seal 12 and the seal cover 13 are first attached to the housing 11, the inner diameters of the wire insertion holes 122 and 123 are reduced when the mat seal 12 is pressed, and the insertion of the terminal-attached wires 14 is performed. This is because it becomes difficult. In the completed connector 1, the terminal fitting 142 is accommodated in the receiving holes 112 a and 112 b of the terminal receiving chamber 112, and the electric wire portion 141 is inserted through the electric wire insertion holes 122 and 123 of the mat seal 12 and the electric wire insertion holes 132 and 133 of the seal cover 13. It will be in the state. Moreover, this connector 1 is connected to the opposite connector to be connected on the side opposite to the seal cover 13 side. At the time of connection, the terminal fitting (male terminal) of the mating connector enters the receiving holes 112a and 112b opened on the connection side surface and comes into contact with the terminal fitting 142 of the connector 1 of the present embodiment. .

  Next, the mat seal 12 will be described in more detail with reference to FIGS. The mat seals shown in these drawings are slightly different from the mat seal 12 shown in FIGS. 1 to 4 in the number and arrangement of electric wire insertion holes of large and small sizes, and in cross-sectional shape. . However, since both of them can be regarded as substantially the same in the structure, in FIGS. 5 to 8, the mat seal and its components are given the same reference numerals as those shown in FIGS. 1 to 4. The description will be made without distinguishing both.

  FIG. 5 is a view showing a cross section of the mat seal equivalent to the cross section shown in FIG. FIG. 6 is an enlarged view showing a contact portion between the mat seal and the housing. As described above, the mat seal 12 is sandwiched between the seal cover 13 and the terminal accommodating chamber 112 in the housing 11 and pressed in the direction indicated by the arrow D3. By this pressing, the mat seal 12 is brought into close contact with the tapered surface 121 formed at the base of the water stopping portion 120 on the terminal accommodating chamber 112 side, against the corner on the opening 111 side at the inner edge of the stepped portion 113. . Due to this close contact, the water-stop portion 120 exhibits a sealing property. Here, in this embodiment, the mat seal 12 is crushed in the thickness direction by pressing the seal cover 13. As a result of this crushing, an expansion force is generated on the mat seal 12 to expand in the in-plane direction indicated by the arrow D4 in FIG. In addition to the force in the pressing direction of the seal cover 13, the expansion force in the in-plane direction is also applied to the tapered surface 121. Since the taper surface 121 is pressed against the corner of the stepped portion 113 by the force in these two directions, a high closeness between them is obtained, and further, the sealing performance by the water stopping portion 120 is improved. Yes.

  Moreover, in this embodiment, the outer edge part 130 of the water stop part 120 is also pressed against the inner surface of the housing 11 by the above-described in-plane expansion force, and is brought into close contact with the inner surface, so that the sealing performance by the water stop part 120 is improved. I am helping.

  Here, in this embodiment, the mat seal 12 has a flat surface on the seal cover 13 side, and a pressing force is applied to the flat surface from the seal cover 13 by the surface. For this reason, the expansion force generated in the mat seal 12 is larger than that in the case where, for example, the seal cover 13 side is uneven and a pressing force is partially applied from the seal cover 13. In this mat seal 12, the expansion force in the in-plane direction is increased by pressing on the flat surface on the seal cover 13 side, and thus the close contact between the tapered surface 121 and the corner of the step 113. The improvement of the sealing property by the water stop part 120 is aimed at. Further, the increase in the expansion force also improves the pressing force of the outer edge portion 130 of the water stop portion 120 to the inner surface of the housing 11, and the sealing performance is also improved in this respect.

  Further, as shown in FIG. 6, a housing-side tapered surface 115 that is inclined along the tapered surface 121 of the mat seal 12 is formed at the corner on the opening 111 side at the inner edge of the stepped portion 113. As a result, when the mat seal 12 is pressed by the seal cover 13 in the direction indicated by the arrow D3, the tapered surface 121 of the mat seal 12 and the housing-side tapered surface 115 come into contact with each other. In this embodiment, the contact between the two surfaces increases the closeness between the two, and the sealing performance is also improved in this respect. The housing side taper surface 115 corresponds to an example of the housing side taper surface according to the present invention.

  Unlike the present embodiment, the corner on the opening 111 side at the inner edge of the stepped portion 113 may be a convex angle where the housing side tapered surface 115 is not formed. In this case, when the mat seal 12 is pressed in the direction indicated by the arrow D3, the convex angle bites into the tapered surface 121, and the mat seal 12 exhibits sealing properties by this biting.

  Here, as shown in FIG. 5, a pair of wire restriction portions 124 and two seal pieces 125 are provided on the inner peripheral surface of the small-sized wire insertion hole 122 in the mat seal 12. The electric wire restricting portion 124 is an annular protrusion provided around the outer side and the inner side of the housing 11 in the electric wire insertion hole 122 and making a round in the circumferential direction. The electric wire restricting portion 124 abuts on the electric wire portion 141 of the electric wire 14 with a terminal that passes through the electric wire insertion hole 122, and serves to restrict the movement of the electric wire portion 141 in a direction that intersects the insertion direction of the electric wire 14 with a terminal. Fulfill. Two seal pieces 125 are provided between the pair of electric wire regulating portions 124. The seal piece 125 is also an annular protrusion that is provided on the inner peripheral surface of the wire insertion hole 122 and makes one round in the circumferential direction. The seal piece 125 plays a role of preventing water from entering from the electric wire insertion hole 122 by being in close contact with the outer peripheral surface of the electric wire portion 141 of the electric wire with terminal 14 inserted through the electric wire insertion hole 122. As with the small-sized electric wire insertion hole 122, the large-sized electric wire insertion hole 123 in the mat seal 12 is also provided with a pair of electric wire regulating portions 126 and a seal piece 127 on the inner peripheral surface thereof. However, in the large-sized wire insertion hole 123, only one seal piece 127 is provided between the pair of wire restriction portions 126.

  Hereinafter, the wire restriction portions 124 and 126 and the seal pieces 125 and 126 will be described in more detail by taking the wire restriction portions 124 and the seal pieces 125 provided in the small-sized wire insertion holes 122 as examples.

  FIG. 7 is an enlarged sectional view of the small-sized wire insertion hole shown in FIG. In the present embodiment, the seal piece 125 has a surface facing the outside of the housing 11 and a surface facing the inside of the housing 11 along a direction substantially orthogonal to the insertion direction before the insertion of the terminal-attached electric wire 14. It has become an elevation. When the terminal-attached wire 14 is inserted into the wire insertion hole 122, the seal piece 125 is deformed by the inner edge of the seal piece 125 being pulled in the insertion direction indicated by the arrow D5 by the terminal-attached wire 14 passing through the wire insertion hole 122. To do. By this deformation, the seal piece 125 is brought into close contact with the outer peripheral surface of the electric wire portion 141 of the terminal-attached electric wire 14 with a wide area, and exhibits a sealing property that prevents water from entering from the electric wire insertion hole 122. And in this embodiment, each of the surface facing the outer side of the housing 11 and the surface facing the inner side of the housing 11 of the seal piece 125 has an elevation surface as described above before the insertion of the terminal-attached electric wire 14. Thus, the flexibility of the seal piece 125 is improved. At the time of assembling the connector 1 (see FIG. 1), the terminal-attached electric wire 14 may be pulled out from the electric wire insertion hole 122, but the flexibility of the seal piece 125 is improved, The insertion / extraction resistance by the seal piece 125 is suppressed. Thereby, in this embodiment, the assembly property of the connector 1 is improved. Further, by suppressing this insertion / extraction resistance, damage to the seal piece 125 is avoided at any time of insertion / extraction of the terminal-attached electric wire 14, and the sealing performance by the seal piece 125 is improved.

  Further, when the mat seal 12 is pressed by the seal cover 13, the inner diameter of the wire insertion hole 122 in a state where the seal piece 125 is in close contact with the outer peripheral surface of the electric wire portion 141 is reduced by the pressing. Also by this reduced diameter, the sealing performance by the seal piece 125 is improved.

  In the present embodiment, as described above, the movement of the electric wire portion 141 in the direction intersecting the insertion direction is restricted by the pair of electric wire restricting portions 124 provided on both sides of the seal piece 125. If the movement of the electric wire portion 141 in such a direction is large, the close contact between the seal piece 125 and the outer peripheral surface of the electric wire portion 141 may be reduced. In the present embodiment, the pair of wire restriction portions 124 restricts the movement of the wire portion 141 at the place where the seal piece 125 is disposed between the pair of wire restriction portions 124. As a result, a decrease in the adhesion between the seal piece 125 and the outer peripheral surface of the electric wire portion 141 is suppressed, and as a result, a decrease in the sealing performance at the electric wire insertion hole 122 is suppressed.

  Further, in the present embodiment, the electric wire regulating portion 124 has a flat surface 124 a along the insertion direction of the terminal-attached electric wire 14 on the inner edge thereof, and the flat surface 124 a is configured to be able to contact the electric wire portion 141. ing. As a result, the contact area between the electric wire restricting portion 124 and the electric wire portion 141 is increased, and as a result, the degree of restriction on the movement of the electric wire portion 141 is increased, and the deterioration of the sealing performance is further suppressed. On the other hand, the inner edge of the seal piece 125 is a convex curved surface, so that the deformability when the terminal-attached electric wire 14 is inserted is improved.

  As shown in FIG. 6, the inner diameter dimension φ1 of the wire restricting portion 124 is formed larger than the inner diameter dimension φ2 of the tip of the convex curved surface at the inner edge of the seal piece 125. Thereby, while the movement of the electric wire portion 124 is restricted, the insertion / extraction resistance of the electric wire 14 with a terminal by the electric wire restricting portion 124 is suppressed, and the assemblability is improved. Furthermore, by suppressing the increase in the insertion / extraction resistance, damage to the wire restricting portion 124 is avoided at any time of insertion / removal of the terminal-attached electric wire 14.

  Here, a first trough portion 128 in which the inner peripheral surface of the wire insertion hole 122 is recessed radially outward is formed between the wire restriction portion 124 and the seal piece 125, and between the two seal pieces 125. The 2nd trough part 129 in which the internal peripheral surface was dented in the radial direction outer side is formed. The inner diameter dimension φ3 of the bottom of the first valley portion 128 is formed larger than the inner diameter dimension φ4 of the bottom of the second valley portion 129. As a result, the wire restricting portion 124 is easily deformed when the terminal-attached electric wire 14 is inserted and removed, and also in this respect, it is possible to improve the assemblability and avoid the damage of the wire restricting portion 124. In the present embodiment, the width W1 of the first valley portion 128 is wider than the width W2 of the second valley portion 129. Also by this, the electric wire control part 124 becomes easy to deform | transform, and improvement of assembling property and avoidance of the damage of the electric wire control part 124 will be aimed at.

  Further, in the present embodiment, as shown in FIG. 6, the surface on the seal piece 125 side in the electric wire regulating portion 124 is in a direction substantially orthogonal to the insertion direction before the insertion of the terminal-attached electric wire 14. Elevated along. Thereby, compared with the case where this surface is a surface greatly inclined with respect to the insertion direction, the wire restricting portion 124 is easily deformed. Also in this respect, the assemblability is improved and the wire restricting portion 124 is not damaged. Evasion is planned.

  Note that the seal piece is not limited to the shape in which each of the surface facing the outside of the housing 11 and the surface facing the inside of the housing 11 is the above-described upright surface as in the present embodiment. The shape of the seal piece may be, for example, the following another example.

  FIG. 8 is a diagram showing another example of the seal piece shape. In another seal piece 125 ′ shown in FIG. 8, the surface facing the outside of the housing 11 and the surface facing the inside of the housing 11 are inclined surfaces as follows before the insertion of the terminal-attached electric wire 14. It has become. An outer surface of the housing 11, that is, a surface facing the seal cover 133 (see FIGS. 1 to 3) is an inclined surface inclined in a direction away from the seal cover 133. Further, the inner surface of the housing 11, that is, the surface facing the terminal accommodating chamber 112 (see FIGS. 1 to 3) is an inclined surface that is inclined away from the terminal accommodating chamber 112. That is, the seal piece 125 ′ of this other example has a shape that becomes thinner toward the inner edge side, and the flexibility is enhanced particularly on the inner edge side. In this alternative example as well, the surface on the seal piece 125 ′ side of the wire restricting portion 124 is an elevation surface along a direction substantially orthogonal to the insertion direction before insertion of the terminal-attached wire 14.

  The above-described embodiment is merely a representative form of the present invention, and the present invention is not limited to this embodiment. That is, various modifications can be made without departing from the scope of the present invention.

  For example, in the above-described embodiment, in order to use two kinds of large and small electric wires with terminals, there is a connector in a form in which the accommodation hole of the terminal accommodating chamber, the electric wire insertion hole of the mat seal, and the electric wire insertion hole of the seal cover are provided in two sizes. Illustrated. However, the form of the connector is a form in which one type of electric wire with a terminal is used, and only the housing holes for the terminal accommodating chamber, the electric wire insertion holes for the mat seal, and the electric wire insertion holes for the seal cover are provided for each size. May be. Alternatively, three or more types of electric wires with terminals may be used, and three or more types of receiving holes in the terminal accommodating chamber, electric wire insertion holes in the mat seal, and electric wire insertion holes in the seal cover may be provided corresponding to each size. .

  Further, for example, in the above-described embodiment, as an example of the wire restricting portion, an annular wire restricting portion that circulates in the circumferential direction of the inner peripheral surface of the wire insertion hole is illustrated, but the wire restricting portion is not limited thereto. It is not a thing. The electric wire restricting portion referred to in the present invention may be composed of a plurality of protrusions arranged in the circumferential direction at intervals on the inner peripheral surface of the electric wire insertion hole, for example.

  Further, for example, in the above-described embodiment, as an example of the structure in which the seal cover presses the mat seal, the mat seal is pressed by engaging the engagement ring on the seal cover side with the engagement protrusion on the housing side. An engagement type structure is illustrated. However, the structure for pressing the mat seal is not limited to this. The structure that presses the mat seal may be, for example, a slide type structure that presses the mat seal by slidingly engaging the guide groove on the seal cover side with the guide rail on the housing side. Alternatively, the structure for pressing the mat seal may be a structure in which the seal cover thus locked to the housing is further pressed against the mat seal by a separate pressing member. As described above, the structure for pressing the mat seal is not particularly limited as long as the mat seal can be pressed into the housing.

1 connector 11 housing 12 mat seal (an example of a seal member)
13 Seal cover (an example of a support member)
14 Electric wire with terminal 113 Stepped portion 115 Housing side taper surface 121 Water stop portion 122, 123 Electric wire insertion hole 124, 126 Electric wire regulating portion 125, 127 Seal piece 130 Tapered surface

Claims (3)

A housing having a cylindrical shape with one end open and the other end closed, and housing a plurality of electric wires with terminals, and a seal member formed of an elastic material that is fitted from the opening of the housing and provided inside the housing And a support member for supporting the seal member in the housing while pressing and crushing the seal member into the housing,
The seal member has a water stop portion that stops water tightly against the inner surface of the housing, and a plurality of wire insertion holes that allow the plurality of terminal-attached wires to be inserted from the outside toward the inside of the housing. Formed,
The inner surface of the housing is formed with a stepped portion protruding inward,
The water stop portion is formed to have a tapered surface that is in contact with the corner on the opening side of the inner edge of the stepped portion and is inclined in a direction away from the opening toward the inside of the housing. Characteristic connector.   The connector according to claim 1, wherein the seal member has a flat surface on the support member side, and pressing force is applied to the flat surface from the support member.   3. The connector according to claim 1, wherein a housing-side tapered surface that is inclined along the tapered surface of the seal member is formed at a corner on the opening side of the inner edge of the stepped portion.

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