TWI426665B - Plug - Google Patents

Description

plug

The present invention relates to a plug having a plug body and a plurality of plug pins protruding from the plug body.

It is known that a plug for preventing water from being infiltrated for preventing the intrusion of water such as rain when the plug is used outdoors (for example, see Patent Document 1). In the plug of Patent Document 1, the waterproof cover for the plug is detachably attached to the plug of the indoor specification, and the waterproof measure is implemented. A convex portion that fits into a cylindrical socket of a receptacle is provided at a distal end of the waterproof cover for a plug. Further, the socket and the plug are in contact with the convex portion through the socket to prevent waterproofing between the insertion piece of the plug and the insertion opening of the socket.

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2002-216888

However, in the plug of Patent Document 1, the intrusion of water into the plug is suppressed by connecting the plug to the socket. However, in a state where the plug is not connected to the socket, it is difficult for the plug to suppress the intrusion of water into the inside of the plug.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a plug capable of suppressing water from entering the inside of a plug.

In order to achieve the above object, a plug according to the present invention includes a plug body and a plurality of plug pins projecting from a front end surface of the plug body, and a plug hole through which the plug is inserted is provided on a front end surface of the plug body The through hole has a sealing member attached to at least one of the plugs, and the sealing member blocks the insertion hole and the plug in a state in which the plug is inserted into the insertion hole.

In the plug according to the present invention, an auxiliary member is attached to the plug, and the auxiliary member presses the sealing member toward a periphery of the insertion hole in a state in which the plug is inserted into the insertion hole.

In the plug of the present invention, the auxiliary member is in contact with the entire surface of the sealing member in a direction in which the auxiliary member presses the sealing member. The plug of the present invention is characterized in that the plug and the sealing member are formed by integral molding.

In the plug according to the present invention, the sealing member is provided inside the plug body in a state in which the plug is inserted into the insertion hole. In the plug of the present invention, the sealing member is composed of a single member, and the plurality of pins are respectively blocked from the insertion holes respectively corresponding to the plurality of pins.

[Effects of the Invention]

According to the present invention, it is possible to provide a plug capable of suppressing the intrusion of water into the inside of the plug.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

(First embodiment)

A first embodiment in which a plug of the present invention is inserted into a waterproof socket provided on a wall surface of a room outside the house will be described with reference to Figs. 1 to 5 .

As shown in FIG. 1, the waterproof socket (hereinafter referred to as "socket A") includes a socket main body 110 provided with an insertion opening 111 inserted into the terminal 2 of the plug B, and a door opening and closing mechanism 120 for performing an opening and closing operation of the insertion opening 111. Composition.

The plug B is provided with a plug body 1 as a housing, a terminal 2 including a tab protruding from the plug body 1, a cable 3 pulled out from the opposite side of the plug body 1 from the terminal 2, and a cable 3 for holding the cable 3 The cable holding portion 4 on the plug body 1.

The socket main body 110 is provided with a waterproof cover 112 for preventing water such as rain from entering the insertion port 111, and a recess 113 provided in the waterproof cover 112. The insertion port 111 is provided on the bottom surface 114 of the recess 113.

In the door opening/closing mechanism 120, a door body 121 that covers the insertion port 111 from below is provided, and the door body 121 is biased to close the door body 121, that is, the waterproof cover 112 is in contact with the door body 121. Spring member (not shown). That is, before the plug B is inserted into the socket A, the door body 121 is maintained in a state of covering the insertion port 111 (closed state) as indicated by a chain double-dashed line in the drawing.

When the plug B is connected to the socket A, the terminal 2 of the plug B is inserted into the insertion port 111 after the door body 121 is in a state in which the insertion port 111 is exposed to the outside from the closed state. Further, after the plug B is detached from the socket A, the door body 121 is again in a closed state.

Hereinafter, the horizontal direction of FIG. 4( a ) is “left-right direction Y”, the vertical direction is “up-and-down direction Z”, and the left-right direction of FIG. 4( b ) is “front-rear direction X”. Further, in the front-rear direction X, the direction in which the first insertion piece 51 protrudes is referred to as "front", and the opposite side thereof is referred to as "rear".

As shown in FIG. 2, the plug body 1 is provided with a hollow cylindrical outer casing 10 gripped by an operator, a disk-shaped body 20 attached to the front end of the outer casing 10, and disposed in the outer casing 10 and holding the terminal 2 Cover 30. Further, a waterproof seal 40 is interposed between the outer casing 10 and the body 20.

The terminal 2 includes two power supply terminals 50 and 60 that are inserted into the power supply insertion port 111 of the socket A, and one grounding terminal 70 that is inserted into the grounding insertion port 111 of the socket A. The cable holding portion 4 includes a two-divided cord clip 80, a ring-shaped cord pushing member 90 that sandwiches the inside of the clip 80, and a ring that covers the outer peripheral surface of the clip 80. Ring-shaped member 100. The clip 80 is fixed to each other by the two screw members SC4.

The outer casing 10 and the body 20 are fixed to each other by two screw members SC1. The body 20 and the cover 30 are fixed to each other by one screw member SC2. In the outer casing 10, a casing main body portion 11 having a hollow cylindrical shape is provided. The outer casing main body portion 11 is provided with an inner protruding portion 12 having a distal end surface 12a that abuts against the waterproof sealing member 40, and extends outward from the inner protruding portion 12 to accommodate the body 20 and the waterproof seal 40, respectively. A housing portion 13 having a hollow cylindrical shape.

The body 20 is provided with a disk-shaped body main body portion 21. The body main body portion 21 is provided with a first insertion hole 22 through which the power supply terminal 50 is inserted, a second insertion hole 23 through which the power supply terminal 60 is inserted, and a third insertion hole 24 through which the ground terminal 70 is inserted. And a screw insertion portion 25 through which the screw member SC1 is inserted. The screw insertion portion 25 is provided with a through hole 25a through which the shaft portion of the screw member SC1 is inserted, and an annular mounting portion 25b on which the screw head of the screw member SC1 is placed. A screw pad SP is disposed on each of the mounting portions 25b. The screw pad SP is sandwiched between the screw head of the screw member SC1 and the mounting portion 25b. Thereby, the water is prevented from entering between the screw member SC1 and the through hole 25a via the screw head and the mounting portion 25b.

In the cover 30, a cover main body portion 31 is provided. The cover main body portion 31 is provided with a screw insertion hole 32 that penetrates the center portion of the main body portion 31 in the front-rear direction X and allows the screw member SC2 to be inserted, and a first holding portion 33 that holds the power supply terminal 50, The second holding portion 34 of the power supply terminal 60 and the third holding portion 35 holding the grounding terminal 70 are held. The power supply terminals 50 and 60 and the grounding terminal 70 are respectively fixed to the first holding portion 33 to the third holding portion 35 by the corresponding terminal screws SC3.

The waterproof seal 40 is provided with a cylindrical portion 41 having a hollow cylindrical shape, an annular ring portion 42 continuously formed on the front end portion of the cylindrical portion 41, and a rear end portion from the cylindrical portion 41. The bottom surface portion 43 that extends inward. Screw insertion holes 44 through which the two screw members SC1 are respectively inserted are provided in the bottom surface portion 43. Further, the terminal 2 is inserted into a space surrounding the inner periphery of the bottom surface portion 43.

In the wire clamp 80, a clip main body portion 81 having a semi-cylindrical shape is provided. The clip main body portion 81 is provided with a push block accommodating portion 82 as a space for accommodating one half of the wire push block member 90 at the rear end portion thereof, for accommodating the cable 3 in front of the accommodating portion 82. The cable housing portion 83 of the space and the screw insertion hole 84 of the screw member SC4 are inserted. An outer peripheral groove 85 for attaching the ring member 100 is provided on the outer peripheral portion of the clip main body portion 81. A flat portion 85a is provided on a part of the outer circumferential groove 85.

The wire push block member 90 is formed by molding a rubber member. The cable 3 is inserted into the through hole 91 that penetrates the wire push block member 90 in the front-rear direction X. In the state in which the cable 3 is inserted through the through hole 91 and the wired push block member 90 is housed in the push block housing portion 82, the two clamps 80 are assembled by the screw member SC4, thereby causing the wire push block member. 90 is elastically deformed inward. Thereby, the gap between the through hole 91 and the cable 3 is reduced.

The ring member 100 is formed by molding a rubber member. The inner diameter of the ring member 100 is formed to be smaller than the outer diameter of the outer circumferential groove 85 of the clip main body portion 81 in a state before being attached to the clip main body portion 81. When the ring member 100 is mounted in the outer circumferential groove 85, the joint of the screw member SC4 and the outer circumferential groove 85 in which the clamp main body portion 81 is combined is covered. A flat portion 101 is provided on the ring member 100. By aligning the flat portion 101 at a position corresponding to the flat portion 85a of the outer circumferential groove 85, the ring member 100 is a rotation stopper with respect to the wire clamp 80.

As shown in FIG. 3, the power supply terminal 50 includes a first blade 51, an auxiliary member 52 attached to the first blade 51, and a sealing member 53 attached to the first blade 51. The power supply terminal 60 includes a second blade 61, an auxiliary member 62 attached to the second blade 61, and a sealing member 63 attached to the second blade 61. The grounding terminal 70 includes a grounding pin 71, a terminal plate 72 attached to the rear end portion of the grounding pin 71, and a sealing member 73 attached to the grounding pin 71.

The first insert piece 51 is provided with a substantially rectangular insert main body portion 51a formed by press-forming a sheet metal and having a long side in the front-rear direction X. A screw insertion portion 51b as a through hole for inserting the terminal screw SC3 is provided at the rear end portion of the blade main body portion 51a. A projection portion 51c that protrudes from the blade main body portion 51a toward both sides in the left-right direction Y is provided in front of the screw insertion portion 51b. By inserting the terminal screw SC3 into the screw insertion portion 51b, the end portion of the cable 3 is sandwiched by the blade main body portion 51a and the screw head of the terminal screw SC3. Thereby, the cable 3 and the first blade 51 are electrically connected.

The auxiliary member 52 is provided with a hollow square-shaped frame portion 52a which is formed by injection molding a resin material and has a long side in the left-right direction Y in a plan view seen from the front. On both sides of the frame portion 52a in the left-right direction Y, a concave portion 52b that is recessed toward the front and fitted to the protruding portion 51c is provided.

The sealing member 53 is formed by injection molding an elastic resin material such as a rubber member. The sealing member 53 has the same shape as the frame portion 52a in a plan view seen from the front. The entire surface of the rear end surface of the sealing member 53 abuts against the front end surface of the auxiliary member 52. Thereby, the auxiliary member 52 abuts against the entire surface of the sealing member 53 in the direction in which the auxiliary member 52 presses the sealing member 53.

The second insert piece 61 is formed by press-forming a sheet metal. The second insert piece 61 is provided with an insert main body portion 61a having an L shape in a plan view viewed from the front in the front-rear direction X and having a long side. A screw insertion portion 61b as a through hole for inserting the terminal screw SC3 is provided at the rear end portion of the blade main body portion 61a. A step portion 61c that narrows the width of the blade main body portion 61a in the left-right direction Y and a projection portion 61d that protrudes downward from the blade main body portion 61a are provided in front of the screw insertion portion 61b. By inserting the terminal screw SC3 into the screw insertion portion 61b, the end portion of the cable 3 is sandwiched by the blade main body portion 61a and the screw head of the terminal screw SC3. Thereby, the cable 3 and the second blade 61 are electrically connected.

The auxiliary member 62 is provided with a frame portion 62a which is formed by injection molding a resin material and has an L shape in a plan view seen from the front. Each of the right end portion and the lower end portion of the frame portion 62a is provided with a recess 62b that is recessed toward the front and fitted to the step portion 61c and the projection portion 61d.

The sealing member 63 is formed by injection molding an elastic resin material such as a rubber member. The sealing member 63 has the same shape as the frame portion 62a in a plan view seen from the front. The entire surface of the rear end surface of the sealing member 63 abuts against the front end surface of the auxiliary member 62. Thereby, the auxiliary member 62 abuts against the entire surface of the sealing member 63 in the direction in which the auxiliary member 62 presses the sealing member 63.

The grounding plug 71 is provided with a cylindrical pin body portion 71a formed by cutting a metal material and having a long side in the front-rear direction X. The rear end portion of the pin main body portion 71a is provided with an enlarged portion 71b whose outer diameter is expanded over the entire circumference.

The terminal plate 72 is provided with a plate main body portion 72a formed by press-forming a sheet metal and having a long side in the front-rear direction X. The front end portion of the plate main body portion 72a is provided with a fixing portion 72b that is curved and abuts against the rear end surface of the enlarged portion 71b. The ground plug 71 and the terminal block 72 are connected to each other by soldering the enlarged portion 71b and the fixed portion 72b. A screw insertion hole 72c for inserting the terminal screw SC3 is provided in the plate main body portion 72a. By inserting the terminal screw SC3 into the screw insertion hole 72c, the end portion of the cable 3 is sandwiched by the screw main body of the plate main body portion 72a and the terminal screw SC3. Thereby, the cable 3 and the ground plug 71 are electrically connected.

The sealing member 73 is formed by injection molding an elastic resin material such as a rubber member. The sealing member 73 has a circular ring shape in a plan view seen from the front. The entire surface of the rear end surface of the sealing member 73 abuts on the front end surface of the enlarged portion 71b.

As shown in FIG. 4, the cylindrical portion 41 and the bottom surface portion 43 of the waterproof seal 40 abut against the inner circumferential surface of the housing portion 13 of the outer casing 10 and the front end surface of the inner projection portion 12. Further, the outer circumferential surface of the trunk main body portion 21 of the body 20 abuts against the inner circumferential surface of the cylindrical portion 41, and the rear end surface of the trunk main body portion 21 abuts against the front end surface of the bottom surface portion 43. Here, the cylindrical portion 41 is compressed between the accommodating portion 13 and the trunk body portion 21 by the insertion of the trunk body portion 21. The body 20 and the outer casing 10 are assembled by the screw member SC1, and the bottom surface portion 43 is compressed between the inner protrusion portion 12 and the body main body portion 21. With the above, the waterproof seal 40 is in close contact between the outer casing 10 and the body 20.

The ring portion 42 of the waterproof seal 40 is provided at a front end surface of the body main body portion 21 and at a position forward of the front end surface of the outer casing 10, and covers a part of the front end surface of the outer casing 10. A gap is formed between the ring portion 42 and the front end surface of the outer casing 10 in the front-rear direction X.

The rear end portion of the trunk body portion 21 is provided with a first recessed portion 26 that communicates with the first insertion hole 22 and has a quadrangular shape in a plan view seen from the rear, and communicates with the second insertion hole 23, and The second recessed portion (not shown) having an L shape and the third recessed portion 28 that is in communication with the third insertion hole 24 and is circular in plan view from the rear is a plan view seen from the rear. The first recessed portion 26 to the third recessed portion 28 are designed to have a concave shape that is recessed from the rear surface of the body main body portion 21 toward the front.

The auxiliary member 52 and the sealing member 53 are housed in the first recess 26 . The auxiliary member 62 and the sealing member 63 are housed in the second recess. The enlarged portion 71b, the fixed portion 72b, and the sealing member 73 are accommodated in the third recessed portion 28. That is, the auxiliary members 52 and 62 and the sealing members 53, 63 and 73 are provided inside the plug body 1, respectively.

The first holding portion 33 to the third holding portion 35 are respectively provided with a first contact that abuts against the rear end surface of the first insertion piece 51, the rear end surface of the second insertion piece 61, and the rear end surface of the ground insertion pin 71. The portion 33a, the second abutting portion (not shown), and the third abutting portion 35a.

The body 20 and the cover 30 are assembled by the screw member SC2 in a state in which the first insertion piece 51, the second insertion piece 61, and the ground insertion pin 71 are inserted into the first insertion hole 22 to the third insertion hole 24, respectively. . By the force of the assembly, that is, the fastening force of the screw member SC2, the first recessed portion 26 to the third recessed portion 28 and the first abutting portion 33a to the third abutting portion are compared to before the tightening force is applied. The distances of the front and rear directions X of 35a become smaller, respectively. Thereby, the rear end surface of the first insertion piece 51 and the rear end surface of the second insertion piece 61 are pressed forward by the first abutting portion 33a and the second abutting portion. Then, the rear end surface of the terminal block 72 is pressed forward by the third abutting portion 35a. Thereby, the auxiliary members 52 and 62 attached to the first tab 51 and the second tab 61 and the enlarged portion 71b of the ground plug 71 press the sealing members 53, 63 and 73, respectively. As a result, the sealing members 53 and 63 are compressed between the first recessed portion 26 and the second recessed portion and the auxiliary members 52 and 62 in the front-rear direction X, respectively. The sealing member 73 is compressed between the third recess 28 and the front-rear direction X of the enlarged portion 71b. Thereby, the sealing members 53, 63, and 73 are respectively pressed against the peripheral edge of the first insertion hole 22, the periphery of the second insertion hole 23, and the periphery of the third insertion hole 24.

As shown in FIG. 5, in a state where the plug B is connected to the socket A, the ring portion 42 of the waterproof seal 40 is compressed by being sandwiched between the bottom surface 114 of the recess 113 of the socket A and the front end surface of the casing 10. . Specifically, the ring portion 42 is elastically deformed toward the rear and the outer side by abutting against the bottom surface 114. Thereby, the ring portions 42 are in close contact with the front end surface of the outer casing 10, the bottom surface 114 of the concave portion 113, and the inner circumferential surface 115, respectively.

According to the present embodiment, the effects described below can be achieved.

(1) According to the present embodiment, the sealing member 53 attached to the first insertion piece 51 is sandwiched by the first insertion piece 51 and the first concave portion 26 of the body 20 in a compressed state, and the first insertion piece 51 can be The first recesses 26 are sealed by a sealing member 53. Therefore, it is possible to suppress the intrusion of water between the first insertion piece 51 and the first insertion hole 22 . As a result, it is possible to suppress the intrusion of water into the inside of the plug body 1. This also achieves the same effect by the second blade 61 and the sealing member 63, and the grounding pin 71 and the sealing member 73.

(2) In the present embodiment, when the body 20 and the cover 30 are assembled, the auxiliary member 52 attached to the first blade 51 presses the sealing member 53 to compress the sealing member 53. Thereby, the shape in which the sealing member 53 is sandwiched between the first recessed portion 26 can be omitted in the first insertion piece 51, so that the shape of the first insertion piece 51 can be simplified. Thereby, the first insert piece 51 can be formed by press-forming a sheet metal. This also achieves the same effect by the second blade 61 and the auxiliary member 62.

(3) In the present embodiment, the entire surface of the rear end surface of the sealing member 53 abuts on the front end surface of the auxiliary member 52. Thereby, the auxiliary member 52 can press the sealing member 53 over the entire body. Therefore, since the sealing member 53 is compressed throughout, the intrusion of water between the first insert 51 and the first recess 26 can be further suppressed. This also achieves the same effect by the second blade 61 and the sealing member 63.

Further, the entire surface of the rear end surface of the sealing member 73 abuts on the front end surface of the enlarged portion 71b of the grounding plug 71. Thereby, the enlarged portion 71b can press the sealing member 73 over the entire portion, so that the intrusion of water between the ground plug 71 and the third recess 28 can be further suppressed.

(4) In the present embodiment, the sealing member 53 is provided inside the plug body 1 in a state where the first insertion piece 51 is inserted into the first insertion hole 22. Therefore, the durability of the sealing member 53 can be improved as compared with the configuration in which the sealing member 53 is provided outside the plug body 1.

(5) In the present embodiment, the protruding portion 51c of the first tab 51 is fitted to the recess 52b of the auxiliary member 52. Therefore, the positioning of the auxiliary member 52 with respect to the front-back direction X of the first insert 51 can be easily performed. As a result, the assembly of the first tab 51 by the auxiliary member 52 can be easily performed. This also achieves the same effect by the second blade 61 and the auxiliary member 62.

(6) In the present embodiment, the ring member 100 is in close contact with the outer circumferential groove 85 of the clip main body portion 81. Therefore, since the joint of the clip main body portion 81 and the screw member SC4 are covered by the ring member 100, it is possible to prevent water from entering the inside of the clip main body portion 81 via the joint and the screw member SC4.

(7) In the present embodiment, the cylindrical portion 41 of the waterproof seal 40 is compressed between the body 20 and the accommodating portion 13 of the outer casing 10. Thereby, it is possible to prevent water from entering the inside of the plug body 1 between the body 20 and the accommodating portion 13 .

(8) In the present embodiment, the bottom surface portion 43 of the waterproof seal 40 is compressed between the body 20 and the inner protrusion portion 12 of the outer casing 10. Thereby, it is possible to prevent water from entering the inside of the plug body 1 between the body 20 and the accommodating portion 13 .

(9) In the present embodiment, the ring portion 42 of the waterproof seal 40 is in close contact with the bottom surface 114 and the inner peripheral surface 115 of the recess 113 of the socket A and the outer casing 10 in a state where the plug B is connected to the socket A. On the front side. Thereby, in a state where the plug B is connected to the socket A, it is possible to suppress water from entering between the recessed portion 113 and the plug body 1 toward the insertion port 111.

(10) According to the present embodiment, since the ring portion 42 protrudes forward from the distal end surface of the body 20, even if water droplets adhere to the distal end surface of the body 20, it is possible to suppress the flow of water droplets to the outer casing 10 side. Thereby, the operator can prevent water droplets from adhering to the operator's hand when the plug body 1 (the casing 10) is gripped. Therefore, it is possible to suppress the insertion of the plug B from the socket A in a state where water droplets adhere to the hand of the operator.

(Second embodiment)

A second embodiment in which the plug of the present invention is inserted into a waterproof socket provided on a wall surface of a house outside the house will be described with reference to Figs. 6 and 7 . In the present embodiment, the configuration of the power supply terminal 50 and the shapes of the ground plug 71 and the sealing member 73 are different from those of the first embodiment. Hereinafter, the differences between the present embodiment and the first embodiment will be mainly described. In addition, the same components are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 6, a through hole 51d penetrating the insertion piece 51 in the thickness direction is provided at a position corresponding to the sealing member 53 of the first insertion piece 51. The auxiliary member 52 is formed to have a smaller thickness in the front-rear direction X than the auxiliary member 52 of the first embodiment.

The sealing member 53 is formed to have a larger thickness in the front-rear direction X than the sealing member 53 of the first embodiment. The sealing member 53 is provided with a coupling portion 53a that is inserted into the through hole 51d and that connects the inner surfaces of the sealing member 53 in the vertical direction Z to each other.

A through hole 61e that penetrates the insertion piece 61 in the thickness direction is provided at a position corresponding to the sealing member 63 of the second insertion piece 61. Similarly to the auxiliary member 52 and the sealing member 63, the auxiliary member 62 and the sealing member 63 have a thickness in the front-rear direction X of the auxiliary member 62, and the thickness of the sealing member 63 in the front-rear direction X is increased. The sealing member 63 is provided with a coupling portion 63a that is inserted into the through hole 61e and that connects the inner faces of the sealing member 63 in the vertical direction Z to each other.

A through hole 71c that penetrates the pin 71 in the vertical direction Z is provided at a position of the ground plug 71 corresponding to the sealing member 73. The sealing member 73 is provided with a connecting portion 73a that inserts the through hole 71c and connects the vertical direction Z of the inner surface of the sealing member 73.

The first insertion piece 51 and the second insertion piece 61 are integrally formed with the sealing members 53 and 63. Specifically, in the state in which the auxiliary members 52 and 62 are attached to the first insertion piece 51 and the second insertion piece 61, they are placed on a metal mold (not shown) for injection molding. In the mold, a space corresponding to the shape of the sealing members 53, 63 is formed, and a molding material of the sealing members 53, 63 is injected into the space. The through holes 51d and 61e are inserted through the molding material to form the joint portions 53a and 63a.

The grounding plug 71 is integrally formed with the sealing member 73. Specifically, the ground plug 71 is placed on a metal mold (not shown) for injection molding. In the mold, a space corresponding to the shape of the sealing member 73 is formed, and a molding material of the sealing member 73 is injected into the space. The connecting portion 73a is formed by inserting the through hole 71c with a molding material.

As shown in Fig. 7, the inner faces of the seal members 53, 63, and 73, the connecting portions 53a, 63a, and 73a, the surfaces of the respective inserts 51, 61 and the ground pin 71, and the inner circumferences of the through holes 51d, 61e, and 71c are shown. The faces are close to each other. Further, the rear end faces of the respective sealing members 53, 63 and the front end faces of the auxiliary members 52, 62 are in close contact with each other. The rear end surface of the sealing member 73 and the front end surface of the enlarged portion 71b are in close contact with each other.

According to the present embodiment, in addition to the effects (1) to (10) of the first embodiment, the following effects can be obtained.

(11) According to the present embodiment, the first insert piece 51 and the sealing member 53 are integrally molded, and after the first insert piece 51 and the sealing member 53 are separately manufactured, the sealing member 53 is attached to the first insert piece 51. The integrated structure of the first insert 51 and the sealing member 53 can be easily manufactured in comparison with the structure.

In addition, by integrally molding the first tab 51 and the sealing member 53 , it is possible to improve the relationship between the first tab 51 and the sealing member 53 as compared with a configuration in which the sealing member 53 is attached to the first tab 51 . Closeness. Therefore, it is possible to suppress water from entering between the first tab 51 and the sealing member 53. This also achieves the same effect by the second blade 61 and the sealing member 63, and the grounding pin 71 and the sealing member 73.

(12) In the present embodiment, the through hole 51d is provided in the first blade 51, and the connecting portion 53a is provided in the sealing member 53. Therefore, the fluidity of the molding material can be improved when the first insert 51 and the sealing member 53 are integrally molded. Therefore, it is easy to integrally form the sealing member 53 on the first insert 51. In addition, since the through hole 51d and the connecting portion 53a are also in close contact with each other, it is possible to better prevent water from entering between the first insert 51 and the sealing member 53. This also achieves the same effect by the second blade 61 and the sealing member 63, and the grounding pin 71 and the sealing member 73.

(Third embodiment)

Referring to Fig. 8, a third embodiment in which the plug of the present invention is embodied as a plug inserted into a waterproof socket provided on a wall surface of a house outside the house will be described. In the present embodiment, the auxiliary member and the sealing member are omitted, and the shape of the waterproof seal is different from that of the first embodiment. Hereinafter, the differences between the present embodiment and the first embodiment will be mainly described. In addition, the same components are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 8, the waterproof seal 40 is provided with a front cover portion 45 that is continuous from the cylindrical portion 41 and covers the entire surface of the front end surface of the body 20 instead of the ring portion 42. The first insertion hole 45, the second insertion hole 47, and the third insertion hole 48 for inserting the first insertion piece 51, the second insertion piece 61, and the ground insertion pin 71 are respectively provided in the front cover portion 45. . The inner faces constituting the insertion holes 46 to 48 are in close contact with the first blade 51, the second blade 61, and the ground pin 71, respectively. Further, as shown in FIG. 8(a), the front cover portion 45 covers the screw member SC1.

In a state where the plug B is connected to the socket A, the front cover portion 45 is sandwiched between the front end surface of the body 20 and the recess 113 of the socket A. The front cover portion 45 also covers the entire surface of the bottom surface 114 of the recess 113. On the other hand, since the first insertion hole 46 to the third insertion hole 48 are disposed at positions corresponding to the respective insertion ports 111, the periphery of each insertion port 111 is covered.

According to the present embodiment, in addition to the effects (6) to (8) of the first embodiment, the following effects can be obtained.

(13) According to the present embodiment, since the single-piece waterproof seal 40 separates the first tab 51, the second tab 61, and the ground plug 71 from the body 20 of the plug body 1, the sealing member can be sealed. 53, 63, 73 are omitted. In addition to this, the auxiliary members 52 and 62 can be omitted. Thereby, the number of parts of the plug B can be reduced.

(14) According to the present embodiment, since the front cover portion 45 covers the screw member SC1, it is possible to prevent water from entering between the screw member SC1 and the screw insertion portion 25.

(15) In the present embodiment, in a state in which the plug B is connected to the socket A, the front cover portion 45 of the waterproof seal 40 is in close contact with the bottom surface 114 of the recess 113 of the socket A and the front end surface of the casing 10. Thereby, in a state in which the plug B is connected to the socket A, it is possible to prevent water from entering between the recessed portion 113 and the plug body 1 toward the insertion port 111.

(16) In the present embodiment, since the front cover portion 45 covers the periphery of each insertion port 111, it is possible to better suppress water from the first blade 51, the second blade 61, and the ground pin 71 and correspond to them. The insertion port 111 is immersed between.

(Fourth embodiment)

A fourth embodiment in which the plug of the present invention is embodied as a plug inserted into a waterproof socket provided on a wall surface of a house outside the house will be described with reference to Fig. 9 . In the present embodiment, the potting process is performed in a state in which the first insert, the second insert, and the ground plug are inserted into the body as compared with the first embodiment. Hereinafter, the differences between the present embodiment and the first embodiment will be mainly described. The same components are denoted by the same reference numerals and the description is omitted.

As shown in FIG. 9, the auxiliary members 52 and 62 and the sealing members 53, 63 and 73 of the first embodiment are omitted, and the potting material 29 is filled in each of the first recessed portion 26 to the third recessed portion 28 of the body 20, respectively. . Specifically, a structure in which the first insertion piece 51, the second insertion piece 61, and the grounding pin 71 are attached to the body 20 is placed in a metal mold (not shown). Next, the potting material 29 is filled in each of the first recessed portion 26, the second recessed portion 27, and the third recessed portion 28.

According to the present embodiment, in addition to the effects (6) to (10) of the first embodiment, the following effects can be obtained.

(17) According to the present embodiment, the first recessed portion 26, the second recessed portion 27, and the third recessed portion 28 are filled with the potting material 29 between the first tab 51, the second tab 61, and the ground plug 71. The recesses 26 to 28 are sealed from the first tab 51, the second tab 61, and the ground plug 71, respectively. Thereby, it is possible to suppress the intrusion of water from the recesses 26 to 28 and the first tab 51, the second tab 61, and the ground plug 71 to the inside of the plug body 1, respectively.

In addition, since the potting material 29 is filled only in each of the recesses 26 to 28, the potting material 29 can be reduced as compared with a structure in which the potting material 29 is entirely filled over the rear surface of the body 20. Fill amount.

(Other embodiments)

The present invention is not limited to the above embodiments, and for example, the following modifications are possible. Further, the following modifications are not limited to the above-described respective embodiments, and different modifications may be combined with each other. Further, each of the above embodiments may be implemented in combination.

In the first embodiment, the first tab 51 and the second tab 61 may be formed in a cylindrical shape in the same manner as the ground plug 71. In addition to this, the auxiliary members 52 and 62 may be omitted by providing the enlarged portions on the first insert 51 and the second insert 61, respectively. In the same manner as in the second to fourth embodiments, the first blade 51 and the second blade 61 can be formed into a cylindrical shape in the same manner as the ground pin 71.

In the second embodiment, the auxiliary members 52 and 62 that press the sealing members 53 and 63, respectively, are attached to the first insert 51 and the second insert 61. However, the auxiliary members 52 and 62 may be omitted.

In the first and second embodiments, the sealing members 53, 63, 73 are provided inside the plug body 1, but the arrangement positions of the sealing members 53, 63, 73 are not limited thereto. It is also possible to provide the sealing members 53, 63, 73 outside the plug body 1. In this case, the sealing members 53, 63, and 73 are pressed against the peripheral edges of the first insertion hole 22 to the third insertion hole 24 on the distal end surface side of the body 20.

In the third embodiment, the front end surface of the body 20 is covered by the waterproof seal 40, and the first insert 51, the second insert 61, and the ground plug 71 are sealed from the body 20. However, the structure of the waterproof seal 40 is not limited to this. For example, the waterproof seal 40 may cover the rear surface of the body 20 by extending the bottom surface portion 43 inwardly so as to sandwich the first tab 51, the second tab 61, and the ground plug 71 from the body 20. Sealed structure.

In the third embodiment, the auxiliary members 52 and 62 and the sealing members 53, 63 and 73 are respectively omitted. However, the auxiliary members may be attached to the first insertion piece 51 and the second insertion piece 61. 52, 62 and the structure of the sealing members 53, 63, and the structure in which the sealing member 73 is attached to the grounding pin 71. Thereby, in addition to the effects of the third embodiment, the effects (1) to (5) of the first embodiment can be achieved.

In the fourth embodiment, the first recessed portion 26 to the third recessed portion 28 are provided in the body 20, and the potting material 29 is filled in each of the recessed portions 26 to 28. However, the shape of the recessed portion filling the potting material 29 is not limited. herein. For example, one of the recesses accommodating the first tab 51, the second tab 61, and the ground plug 71 may be provided on the body 20, and the potting material 29 may be filled in the recess. Further, the concave portion provided on the body 20 may be omitted and the potting material 29 may be filled into the concave portion formed by the inner circumferential surface of the inner protrusion portion 12 of the outer casing 10 and the rear surface of the body 20.

In each of the above embodiments, the sealing members 53, 63, and 73 are attached to all of the first tab 51, the second tab 61, and the ground plug 71. However, the first tab 51 and the first insert 51 may be used. 2A structure in which a sealing member is mounted on at least one of the blade 61 and the grounding pin 71.

In each of the above embodiments, the plug B is a single-phase 200V plug, but the plug B is not limited thereto. For example, a plug for single phase 100V can also be used as the plug B. Further, the grounding terminal 70 may be omitted.

In each of the above embodiments, the socket A is used for a waterproof socket provided outdoors, but the socket A can also be used for an indoor socket.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

A. . . socket

B. . . plug

SC1~SC4. . . Screw part

SP. . . Screw pad

1. . . Plug body

2. . . Terminal

3. . . cable

4. . . Cable retention

10. . . shell

11. . . Shell body

12. . . Inner protrusion

12a. . . Front end face

13. . . Containment department

20. . . Body

twenty one. . . Body body

twenty two. . . First insertion hole (insertion hole)

twenty three. . . 2nd insertion hole (insertion hole)

twenty four. . . Third insertion hole (insertion hole)

25. . . Screw insertion hole

25a. . . Through hole

25b. . . Mounting department

26. . . First recess

27. . . Second recess

28. . . Third recess

29. . . Potting material

30. . . cover

31. . . Cover body

32. . . Screw insertion hole

33. . . First holding unit

33a. . . First abutment

34. . . Second holding unit

35. . . Third holding unit

35a. . . Third abutment

40. . . Waterproof seal

41. . . Cylinder

42. . . Ring

43. . . Bottom part

44. . . Screw insertion hole

45. . . Front cover

46. . . 1st through hole

47. . . 2nd through hole

48. . . 3rd through hole

50. . . Power supply terminal

51. . . 1st insert (latch)

51a. . . Insert body

51b. . . Screw insertion

51c. . . Protrusion

51d. . . Through hole

52. . . Accessory

52a. . . Frame body

52b. . . Concave

53. . . Sealing member (waterproof seal)

53a. . . Linkage

60. . . Power supply terminal

61. . . 2nd insert (latch)

61a. . . Insert body

61b. . . Screw insertion

61c. . . Step

61d. . . Protrusion

61e. . . Through hole

62. . . Accessory

62a. . . Frame body

62b. . . Concave

63. . . Sealing member (waterproof seal)

63a. . . Linkage

70. . . Grounding terminal

71. . . Grounding pin (latch)

71a. . . Pin body

71b. . . Expansion department

71c. . . Through hole

72. . . Terminal board

72a. . . Board body

72b. . . Fixed part

72c. . . Screw insertion hole

73. . . Sealing member (waterproof seal)

73a. . . Linkage

80. . . Clip

81. . . Clip body

82. . . Containment department

83. . . Cable housing

84. . . Screw insertion hole

85‧‧‧outer slot

85a‧‧‧Flat Department

90‧‧‧Wire push block components

91‧‧‧through holes

100‧‧‧ ring parts

101‧‧‧Flat Department

110‧‧‧Socket body

111‧‧‧Inlet

112‧‧‧Waterproof cover

113‧‧‧ recess

114‧‧‧ bottom

115‧‧‧ inner circumference

120‧‧‧door opening and closing mechanism

121‧‧‧

Fig. 1 is a perspective view showing a state in which a plug of the present invention is embodied, in which a plug is inserted into a socket.

Fig. 2 is a perspective view showing an exploded three-dimensional structure of the plug of the embodiment.

3 is a perspective view showing an exploded three-dimensional structure of the terminal of the embodiment.

4(a) and 4(b) are plugs of the embodiment, FIG. 4(a) is a plan view showing a planar structure of the plug viewed from the front, and FIG. 4(b) is a view showing the structure of FIG. 4(a). A cross-sectional view of the cross-sectional structure of the section line AA.

Fig. 5 is a cross-sectional view showing a cross-sectional structure of a plug in the state in which a plug is connected to the socket.

Fig. 6 is a perspective view showing an exploded three-dimensional structure of a terminal according to a second embodiment in which the plug of the present invention is embodied.

7(a) and 7(b) are plugs of the embodiment, Fig. 7(a) is a plan view showing a planar structure of the plug viewed from the front, and Fig. 7(b) is a view showing Fig. 7(a). A cross-sectional view of the cross-sectional structure of the section line BB cut.

8(a) and 8(b) are views showing a third embodiment in which the plug of the present invention is embodied, and Fig. 8(a) is a plan view showing a planar structure of the plug viewed from the front, and Fig. 8(b) is a view showing A cross-sectional view of the cross-sectional structure taken along the section line CC of Fig. 8(a).

9(a) and 9(b) are views showing a fourth embodiment of the plug of the present invention, wherein Fig. 9(a) is a cross-sectional view showing a cross-sectional structure of the plug, and Fig. 9(b) is a view showing Fig. 9; (a) A cross-sectional view of the cross-sectional structure of the section line DD cut.

SC3. . . Screw part

2. . . Terminal

3. . . cable

50. . . Power supply terminal

51. . . 1st insert (latch)

51a. . . Insert body

51b. . . Screw insertion

51c. . . Protrusion

52. . . Accessory

52a. . . Frame body

52b. . . Concave

53. . . Sealing member (waterproof seal)

60. . . Power supply terminal

61. . . 2nd insert (latch)

61a. . . Insert body

61b. . . Screw insertion

61c. . . Step

61d. . . Protrusion

62. . . Accessory

62a. . . Frame body

62b. . . Concave

63. . . Sealing member (waterproof seal)

70. . . Grounding terminal

71. . . Grounding pin (latch)

71a. . . Pin body

71b. . . Expansion department

72. . . Terminal board

72a. . . Board body

72b. . . Fixed part

72c. . . Screw insertion hole

73. . . Sealing member (waterproof seal)

Claims (5)

A plug comprising a plug body and a plurality of latches projecting from a front end surface of the plug body, wherein an insertion hole through which the plug is inserted is provided on a front end surface of the plug body; An auxiliary member and a sealing member are attached to at least one of the plurality of members; and the sealing member blocks the insertion hole and the plug in a state in which the plug is inserted into the insertion hole, and the plug is provided with a protrusion. a front end surface of the auxiliary member is in contact with the sealing member, and a rear end surface of the auxiliary member is in contact with the protruding portion, and the auxiliary member faces the sealing member in a state in which the plug is inserted into the insertion hole. The periphery of the insertion hole is pushed. The plug according to claim 1, wherein the auxiliary member is in contact with the entire surface of the sealing member in a direction in which the auxiliary member presses the sealing member. The plug according to any one of claims 1 to 2, wherein the plug and the sealing member are formed by integral molding. The plug according to any one of claims 1 to 2, wherein the sealing member is provided inside the plug body in a state in which the plug is inserted into the insertion hole. The plug according to claim 1, wherein the sealing member is composed of a single member, and the plurality of pins are respectively blocked from the insertion holes respectively corresponding to the plurality of pins.