JP2016103346A - Waterproof connector, and mat seal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof connector and a mat seal by which waterproof function in the through hole of the mat seal is not spoiled, and an energization failure of a terminal with respect to a mating terminal is not caused.SOLUTION: This waterproof connector includes a mat seal 3 housed in a housing while having a plurality of through holes in which wires are inserted, a mat seal 3 is a two color molding formed by laminating a seal part 32 made of an elastic material on a mat seal body part 31 made of a synthetic resin, a mat seal body part 31 has core parts 3c in which a plurality of through holes 3a inserted with wires 6 are disposed in a column shape, and which faces each other through a divided surface 3b formed so as to divide a plurality of the through holes 3a in a column shape into exact halves, the core part 3c is formed into an open shape closed together by being coupled by a hinge part 3d, and the seal part 32 made of the elastic material is laminated on the peripheral part of the mat seal body part 31 in a state in which the core parts 3c facing each other are closed together and the inner peripheral part of the through hole 3a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a waterproof connector and a mat seal.

  2. Description of the Related Art Conventionally, a waterproof connector configured to maintain the waterproof property of an electric wire having a terminal crimped to an end is known (see, for example, Patent Document 1). 6 and 7 show a waterproof connector 101 that is substantially the same as the waterproof connector described in Patent Document 1. The waterproof connector 101 includes a synthetic resin housing 102, a rubber mat seal 103, and a synthetic resin. A rear holder 104 made of metal is provided.

  The housing 102 has a rear holder housing space 102a, a mat seal housing space 102b adjacent to the rear side of the rear holder housing space 102a, and a mat seal seal on the side where the electric wire 106 having the terminal 105 crimped at the end is inserted. It is formed to have a terminal accommodating chamber 102c adjacent to the inner side of the accommodating space 102b. The housing 102 has convex engaging portions 102d on the left and right side surfaces of the inner peripheral portion of the rear holder accommodating space 102a.

  The mat seal 103 has a plurality of through holes 103 a through which the electric wires 106 are inserted, and is accommodated in the mat seal accommodating space 102 b so that the outer peripheral portion is in close contact with the inner peripheral portion of the housing 102 over the entire periphery. The mat seal 103 is configured such that the inner peripheral portion of the through hole 103 a is in close contact with the outer peripheral portion of the electric wire 106.

  The rear holder 104 has a plurality of through holes 104a through which the electric wires 106 are inserted, and is accommodated in the rear holder accommodating space 102a. The rear holder 104 has concave engaging portions 104b on the left and right side surfaces of the outer peripheral portion. When the rear holder 104 is accommodated in the rear holder accommodating space 102a, the convex engaging portion 102d is fitted into the concave engaging portion 104b. It is locked and fixed to the housing 102.

  The terminal 105 and the electric wire 106 are pushed into the through hole 103a of the mat seal 103 from the through hole 104a of the rear holder 104 with the terminal 105 at the head, and the electric wire 106 is inserted into the through hole 104a of the rear holder 104 and the through hole 103a of the mat seal 103. Is inserted, and the terminal 105 is accommodated in the terminal accommodating chamber 102 c of the housing 102.

  Therefore, the waterproof connector 101 has a rear holder housing space 102a and a terminal housing by the mat seal 103 in which the outer peripheral portion is in close contact with the inner peripheral portion of the housing 102 and the inner peripheral portion of the through hole 103a is in close contact with the outer peripheral portion of the electric wire 106. The waterproof property between the chamber 102c is maintained.

JP 2009-21137 A

  However, in the waterproof connector 101 described above, when the terminal 105 and the electric wire 106 are pushed into the through hole 103a of the mat seal 103, the inner periphery of the through hole 103a of the mat seal 103 is scraped off by the terminal 105. There is a problem that the waterproof function in the through-hole 103a is impaired.

  In addition, the waterproof connector 101 may be in a state where a piece of the forming material of the mat seal 103 scraped off by the terminal 105 adheres to the distal end portion of the terminal 105. For this reason, when the terminal 105 is connected to the counterpart terminal In addition, there is a problem in that energization failure occurs between the counterpart terminal and the terminal 105.

  The present invention has been made in order to solve the above-described problems, and does not impair the waterproof function in the through hole of the mat seal, and does not cause a failure in the conduction of the terminal to the mating terminal. And is intended to provide a mat seal.

  In order to achieve the above object, the waterproof connector according to the present invention has a mating seal accommodating space adjacent to the rear holder accommodating space and the rear side of the rear holder accommodating space on the side where an electric wire having a terminal crimped to the end is inserted. And a mating seal housing having a synthetic resin housing formed so as to have a terminal housing chamber adjacent to the back side of the mat seal housing space, and a plurality of through holes through which the electric wires are inserted. A mat seal that is accommodated in the space, and a synthetic resin rear holder that has a plurality of through holes into which the electric wires are inserted and are accommodated in the rear holder accommodating space. And a waterproof connector which is inserted through the through hole of the mat seal and accommodates the terminal in the rear holder accommodating space, wherein the mat seal is made of a synthetic resin mat sheet. The mat seal main body portion is formed of a two-color molded body in which a seal portion made of an elastic material is laminated on the main body portion, and the plurality of through holes through which the electric wires are inserted are arranged in a single row or a plurality of rows, It has a core part facing through a split surface formed so as to divide a plurality of row-like through holes into half, and the core part is formed in an open shape that is connected and closed by a hinge part, and is opposed A pair of locking portions for holding the core portion in a closed state, and the elastic material sealing portion includes an outer peripheral portion of the mat seal main body portion in a state in which the opposing core portions are closed and the through hole; The inner peripheral portion of the housing is configured to be in close contact with the inner peripheral portion of the housing and the outer peripheral portion of the electric wire.

  With this configuration, the waterproof connector according to the present invention inserts the electric wire having a terminal crimped into the end portion thereof into the through hole of the rear holder, and then the through hole of the mat seal main body portion in which the opposing core portion is open. A predetermined portion of the electric wire is placed on the seal portion made of an elastic material laminated on the half, and the core portions facing each other are closed and the core portions are held closed by the lock portion.

  Furthermore, the waterproof connector according to the present invention accommodates the mat seal in the mat seal accommodating space and accommodates the rear holder in the rear holder accommodating space while accommodating the terminals in the terminal accommodating chamber.

  As a result, the mat seal is made of an elastic material seal portion laminated on the outer peripheral portion of the mat seal main body portion and the inner peripheral portion of the through-hole in a state where the opposing core portions are closed, and the inner peripheral portion of the housing and the outer peripheral portion of the electric wire To maintain the waterproof property between the rear holder housing space and the terminal housing chamber.

  Since the waterproof connector according to the present invention does not push the terminal into the mat seal, the elastic material seal portion of the mat seal is not scraped off by the terminal. For this reason, the waterproof function in the through-hole of the mat seal is not impaired, and the current-carrying failure of the terminal with respect to the mating terminal does not occur.

  Further, since the waterproof connector according to the present invention has a configuration in which a sealing portion made of an elastic material is laminated on a mat seal main body made of synthetic resin, for example, an electric wire inserted into a through hole of the mat seal main body portion. When the outer diameters are different, the mat seal main body portion is not deformed in a state where the positions of the through holes are shifted.

  As a result, the waterproof connector according to the present invention has an elastic material seal portion laminated on the inner peripheral portion of the through hole even when the outer diameters of the wires inserted into the through holes of the mat seal main body portion are different. It is in close contact with the outer periphery of the electric wire, and the waterproof property between the rear holder housing space and the terminal housing chamber is maintained.

  In the waterproof connector described above, it is preferable that the seal portion made of the elastic material is also laminated on the dividing surface of the opposed core portion.

  With this configuration, in the waterproof connector according to the present invention, the elastic material seal portions stacked on the split surfaces of the opposing core portions are in close contact with each other.

  Therefore, the waterproof connector according to the present invention ensures the waterproofing of the split surface in the core portion of the mat seal main body, and further improves the waterproof function.

  The mat seal according to the present invention has a plurality of through holes through which electric wires are inserted and is accommodated in a mat seal accommodating space formed in a synthetic resin housing, wherein the mat seal is It consists of a two-color molded body in which an elastic material seal portion is laminated on a synthetic resin mat seal body portion, and the mat seal body portion has a plurality of through holes through which the electric wires are inserted in a single row or a plurality of rows. Arranged and formed in an open shape having a core part facing each other through a split surface formed so as to divide the plurality of through-holes in a row in half, and the core parts are connected by a hinge part and closed together And a pair of lock portions that hold the opposed core portions in a closed state, and the elastic material seal portion is disposed in front of the opposed core portions in a closed state. Is laminated on the inner peripheral portion of the outer peripheral portion and the through-hole of the mat seal body portion is configured to contact the outer periphery of the inner peripheral portion and the electric wire of said housing.

  With this configuration, the mat seal according to the present invention places the predetermined portion of the electric wire on the seal portion made of an elastic material laminated on the half of the through hole of the mat seal main body portion in which the opposed core portions are open. In addition, the opposing core portions are closed together, and the core portions are closed by the lock portion and held.

  Furthermore, when the mat seal according to the present invention is accommodated in the mat seal accommodating space of the housing, the mat seal is laminated on the outer peripheral portion of the mat seal main body portion and the inner peripheral portion of the through hole in a state where the opposing core portions are closed. The seal portion made of an elastic material is in close contact with the inner peripheral portion of the housing and the outer peripheral portion of the electric wire, and maintains waterproofness between the space on one side of the mat seal and the space on the other side.

  Since the mat seal according to the present invention does not push the terminal into the mat seal, the elastic material seal portion of the mat seal is not scraped off by the terminal. For this reason, the waterproof function in the through-hole of the mat seal is not impaired, and the current-carrying failure of the terminal with respect to the mating terminal does not occur.

  In the mat seal described above, it is preferable that the elastic material seal portion is also laminated on the dividing surface of the opposed core portion.

  With this configuration, in the mat seal according to the present invention, the elastic material seal portions laminated on the split surfaces of the opposing core portions are in close contact with each other.

  Therefore, the mat seal according to the present invention ensures the waterproofing of the dividing surface in the core portion of the mat seal main body, and the waterproof function is further improved.

  According to the present invention, it is possible to provide a waterproof connector and a mat seal that do not impair the waterproof function in the through hole of the mat seal, and that do not cause a failure of current conduction of the terminal to the mating terminal.

It is a fragmentary longitudinal cross-sectional view of the waterproof connector which concerns on embodiment of this invention. It is a front view before closing the mat seal main-body part in the waterproof connector which concerns on embodiment of this invention. It is a front view after closing the mat seal main-body part in the waterproof connector which concerns on embodiment of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a fragmentary perspective view of the structural member of the conventional waterproof connector. It is a partial longitudinal cross-sectional view of the conventional waterproof connector.

  Hereinafter, a waterproof connector and a mat seal according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the waterproof connector 1 according to the present embodiment includes a housing 2, a mat seal 3, and a rear holder 4. The housing 2 and the rear holder 4 are formed of a synthetic resin such as PBT (polybutylene terephthalate). The mat seal 3 is formed of a synthetic resin such as PBT and an elastic resin such as silicone rubber.

  The housing 2 has a rear holder accommodating space 2a, a mat seal accommodating space 2b adjacent to the rear side of the rear holder accommodating space 2a, and a mat seal seal on the side where the electric wire 6 having the terminal 5 crimped at the end is inserted. It is formed so as to have a terminal accommodating chamber 2c adjacent to the inner side of the accommodating space 2b.

  The mat seal 3 has a plurality of through-holes 3 a through which the electric wires 6 are inserted, and is accommodated in the mat seal accommodating space 2 b so that the outer peripheral portion is in close contact with the inner peripheral portion of the housing 2.

  The rear holder 4 has a plurality of through holes 4a through which the electric wires 6 are inserted, and is accommodated in the rear holder accommodating space 2a.

  The configuration of the mat seal 3 will be described in detail. As shown in FIG. 2 and FIG. 3, the mat seal 3 has an elastic material made of an elastic material such as silicone rubber on a mat seal main body portion 31 formed of a synthetic resin such as PBT. This is a two-color molded body in which material seal portions 32 are laminated.

  The mat seal body 31 has a plurality of through holes 3a through which the electric wires 6 are inserted and arranged in a row in two rows, and the plurality of through holes 3a in a row are divided into half. It has the core part 3c which opposes up and down via the dividing surface 3b formed so that the core part 3c is connected by the hinge part 3d, and it is formed in the open shape closed.

  As shown in FIG. 4, the mat seal main body 31 is configured to hold the opposing core part 3 c in a closed state at the other end of the opposing core part 3 c where the aforementioned hinge part 3 d is not formed. It has a hook-like convex engaging portion 3e and a concave engaging portion 3f. The convex engagement portion 3e and the concave engagement portion 3f constitute a pair of lock portions in the present invention.

  The convex engaging portion 3e is formed on one of the opposing core portions 3c so as to protrude toward the other core portion 3c. The concave engaging portion 3f is formed on the other of the opposing core portions 3c, and when the opposing core portion 3c is closed, the convex engaging portion 3e is fitted to close the opposing core portion 3c. It is configured to hold in a state.

  As shown in FIG. 5, the mat seal main body 31 has a convex alignment portion 3g and a concave alignment portion 3h on each split surface 3b of the opposing core portion 3c.

  The convex alignment portion 3g is formed so as to protrude from one or the other divided surface 3b of the opposed core portion 3c toward the divided surface 3b of the opposed core portion 3c. The concave alignment portion 3h is formed on the other split surface 3b of the opposite core portion 3c, and is configured such that the convex alignment portion 3g is fitted when the opposite core portion 3c is closed. Yes.

  When the convex alignment portion 3g and the concave alignment portion 3h are fitted with each other, the lateral displacement of the opposing core portion 3c and the positional displacement in the wire axis direction are suppressed.

  The core part 3c, the hinge part 3d, the convex engagement part 3e, the convex alignment part 3g, and the like constituting the mat seal main body part 31 described above are integrally formed.

  The sealing portion 32 made of an elastic material is laminated on the outer peripheral portion of the mat seal main body portion 31 and the inner peripheral portion of the through hole 3a in a state where the opposing core portions 3c are closed, and the inner peripheral portion of the housing 2 and the electric wire 6 It is comprised so that it may closely_contact | adhere to an outer peripheral part.

  The elastic material sealing portion 32 is also laminated on the dividing surface 3b of the opposing core portion 3c, and the elastic material sealing portion 32 laminated on the dividing surface 3b of the opposing core portion 3c is configured to be in close contact with each other. ing.

  In the present embodiment, the waterproof connector 1 has a mat seal main body 31 in which an electric wire 6 having a terminal 5 crimped at an end thereof is inserted into the through hole 4a of the rear holder 4, and then the opposing core portion 3c is open. The predetermined portion of the electric wire 6 is placed on the elastic material sealing portion 32 laminated on the half of the through-hole 3a, and the opposing core portion 3c is closed to form the convex engaging portion 3e and the concave engaging portion. The core portion 3c is closed by 3f and held in an aligned state.

  Furthermore, the waterproof connector 1 according to the present embodiment accommodates the mat seal 3 in the mat seal accommodating space 2b and accommodates the rear holder 4 in the rear holder accommodating space 2a while accommodating the terminal 5 in the terminal accommodating chamber 2c. .

  As a result, the mat seal 3 has an elastic material seal portion 32 laminated on the outer peripheral portion of the mat seal main body portion 31 and the inner peripheral portion of the through hole 3a in a state in which the opposing core portions 3c are closed. And the outer periphery of the electric wire 6 are kept in close contact with each other, and the waterproof property between the rear holder accommodating space 2a and the terminal accommodating chamber 2c is maintained.

  Since the waterproof connector 1 according to the present embodiment does not push the terminal 5 into the mat seal 3, the elastic material seal portion 32 of the mat seal 3 is not scraped off by the terminal 5. The waterproof function in 3a is not impaired, and the current-carrying failure of the terminal 5 with respect to the counterpart terminal does not occur.

  Further, in the waterproof connector 1 according to the present embodiment, the elastic material sealing portion 32 laminated on the dividing surface 3b of the opposing core portion 3c is in close contact with each other, so that the dividing surface 3b in the core portion 3c of the mat seal main body 31 is provided. The waterproof function is ensured and the waterproof function is further improved.

  Furthermore, the waterproof connector 1 according to the present embodiment has a configuration in which an elastic material seal portion 32 made of an elastic material such as silicone rubber is laminated on a mat seal main body portion 31 formed of a synthetic resin such as PBT. Therefore, for example, when the outer diameters of the electric wires 6 inserted through the through holes 3a are different, the mat seal main body 31 is not deformed in a state where the positions of the through holes 3a are shifted.

  As a result, the waterproof connector 1 according to the present embodiment has an elastic material seal portion laminated on the inner peripheral portion of the through hole 3a even when the outer diameters of the electric wires 6 inserted through the through holes 3a are different. 32 is in close contact with the outer peripheral portion of the electric wire 6, and the waterproof property between the rear holder housing space 2a and the terminal housing chamber 2c is maintained.

  As described above, the waterproof connector and the mat seal according to the present invention have the effect that the waterproof function in the through-hole of the mat seal is not impaired and the terminal is not energized against the mating terminal. It is useful for waterproof connectors and mat seals in general.

DESCRIPTION OF SYMBOLS 1 Waterproof connector 2 Housing 2a Rear holder accommodation space 2b Mat seal accommodation space 2c Terminal accommodation chamber 3 Mat seal 3a Through-hole 3b Split surface 3c Core part 3d Hinge part 3e Convex engagement part (lock part)
3f concave engagement part (lock part)
4 Rear Holder 4a Through-hole 5 Terminal 6 Electric Wire 31 Mat Seal Body 32 Elastic Material Seal

Claims (4)

Terminal holders adjacent to the rear holder housing space, the mat seal housing space adjacent to the rear side of the rear holder housing space, and the back side of the mat seal housing space on the side where the electric wire with the terminal crimped is inserted. A synthetic resin housing formed to have a chamber;
A mat seal that has a plurality of through holes through which the electric wires are inserted and is accommodated in the mat seal accommodating space;
A synthetic resin rear holder that has a plurality of through holes through which the electric wires are inserted and is housed in the rear holder housing space;
A waterproof connector in which the electric wire is inserted into a through hole of the rear holder and a through hole of the mat seal, and the terminal is accommodated in the rear holder accommodating space,
The mat seal is a two-color molded body in which a seal portion made of an elastic material is laminated on a mat seal body made of a synthetic resin.
The mat seal main body is formed with a plurality of through holes into which the electric wires are inserted arranged in a single row or in a plurality of rows so that the plurality of through holes in the row are divided in half. Having a core portion opposed to each other, the core portion being connected by a hinge portion to be closed and having a pair of lock portions for holding the opposed core portions in a closed state ,
The elastic material sealing portion is laminated on the outer peripheral portion of the mat seal main body portion and the inner peripheral portion of the through hole in a state where the opposing core portions are closed together, and the inner peripheral portion of the housing and the electric wire A waterproof connector characterized by being configured to be in close contact with an outer peripheral portion.   2. The waterproof connector according to claim 1, wherein the elastic material sealing portion is also laminated on the dividing surface of the opposing core portion. A mat seal that has a plurality of through holes through which an electric wire is inserted and is accommodated in a mat seal accommodating space formed in a synthetic resin housing,
The mat seal is a two-color molded body in which a seal portion made of an elastic material is laminated on a mat seal body made of a synthetic resin.
The mat seal main body is formed with a plurality of through holes into which the electric wires are inserted arranged in a single row or in a plurality of rows so that the plurality of through holes in the row are divided in half. Having a core portion opposed to each other, the core portion being connected by a hinge portion to be closed and having a pair of lock portions for holding the opposed core portions in a closed state ,
The elastic material sealing portion is laminated on the outer peripheral portion of the mat seal main body portion and the inner peripheral portion of the through hole in a state where the opposing core portions are closed together, and the inner peripheral portion of the housing and the electric wire A mat seal characterized by being configured to be in close contact with an outer peripheral portion.   The mat seal according to claim 3, wherein the elastic material seal portion is also laminated on the dividing surface of the opposed core portion.

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