JP5916896B2 - Plug plug and cord with plug - Google Patents

Description

  The present invention relates to an insertion plug that can be used in common with plug receptacles of different standards, for example, and a cord with an insertion plug.

  2. Description of the Related Art Conventionally, electric power is supplied to an electrical device by connecting an insertion plug connected to the electrical device via a wire cord to a plug receptacle such as an outlet installed on a wall surface.

  Such plug receptacles and plugs are used in various countries around the world, but have different specifications for each country or region, such as the shape and arrangement of the plug blades and the presence or absence of a ground terminal. For this reason, when using an electrical device, it is necessary to use an electrical device provided with an insertion plug according to the specifications of each country, or to use a conversion adapter for converting the insertion plug.

  By the way, for plug receptacles with different ground terminal shapes and arrangements, such as plug receptacles of plug standards adopted in Germany and others and plug receptacles of plug standards adopted in France etc., both plug receptacles Pluggable plugs and conversion adapters that can be connected have been proposed.

  For example, a simple multi-type male and female connector described in Patent Document 1 accommodates a ground piece for receiving a German plug and a ground frame for receiving a French plug in a housing area of a connector main body based on the German plug standard. Therefore, the connector is compatible with plug receptacles in both Germany and France.

  However, since the simple multi-type male and female connector described in Patent Document 1 has a grounding piece for receiving a German plug and a grounding frame for receiving a French plug, the number of parts is large and the number of assembling steps is increased. There is a problem. Furthermore, in the insertion plug having a configuration such as the simple multi-type male and female connectors described in Patent Document 1, when the outer skin member made of a synthetic resin covering the connector main body or the electric wire cord is injection-molded, it is attached to the grounding piece or the grounding frame. There is a possibility that stable conductivity cannot be secured due to adhesion of the synthetic resin.

Utility Model Registration No. 3075169

  In view of the above-described problems, an object of the present invention is to provide an insertion plug that can be used in common with plug receptacles of different standards and a cord with an insertion plug while reducing the number of parts.

According to the present invention, two plug pins connected to a conductive core wire exposed by a predetermined length from an insulation covering body of the covered electric wire in a wire cord in which a plurality of covered electric wires are covered with a covering body, and connection permission of the plug pins And a pair of first plug ground terminals in contact with the pair of ground pole pieces in the first plug receiver having the pair of ground pole pieces, and allowing the plug pin to be connected and having one ground pole pin. A second plug ground terminal that allows connection of the ground electrode pin in the second plug receptacle, the plug pin, and the first plug ground terminal are exposed to the outside, housed and held therein, and the second plug a housing for housing and holding therein a ground terminal and can be connected to the earth electrode pin, and the range extending from the housing to the covering of the electric wire cord to be covered A plastic resin outer skin member, the plug pin, the first plug ground terminal, the second plug ground terminal, the housing, and the outer skin member, the first plug receiver and the second plug receiver. The first plug ground terminal is a first terminal portion, and the first terminal portion, the other first plug ground terminal, and the second plug plug are configured to be connectable to each other. A second terminal portion formed integrally with the ground terminal for plug, a connecting portion connecting the first terminal portion and the second terminal portion, and a core wire connecting portion connected to the core wire of the covered electric wire are integrated. The first terminal portion is provided inside the housing to allow insertion of the first terminal portion in the longitudinal direction of the plug pin, and surrounds the first terminal portion with the inner surface of the housing. A first partition wall A second opening that allows the second terminal portion to be inserted in the longitudinal direction; and a second partition wall that surrounds the second terminal portion with an inner surface of the housing; and the ground terminal is provided in the housing. In the accommodated accommodated state, it comprises a closing means for closing the first opening and the second opening, and the second plug ground terminal is configured to elastically support the connected ground electrode pin, The second plug ground terminal is provided with a protrusion projecting toward the second partition wall, and a projection that contacts the second partition wall when the ground electrode pin is connected.

The said covering body can be used as the covering tube which encloses a covered electric wire, or a heat contraction tube.
The first plug receptacle can be a standard receptacle adopted in Germany, Portugal, Spain, or the like.
The second plug receptacle can be a plug receptacle of a standard adopted in France, Belgium and the like.
The synthetic resin can be composed of polyvinyl chloride or the like.

According to the present invention, the number of components can be reduced, and an insertion plug that can be used in common with plug receptacles of different standards can be configured.
Specifically, the plug is composed of a pair of first plug ground terminals and a second plug ground terminal by a ground terminal integrally formed of a pair of first plug ground terminals and a second plug ground terminal. And the number of parts can be reduced. Thereby, the insertion plug can reduce the number of assembling steps and the manufacturing cost.

  Further, due to the inner surface of the housing, the first partition wall portion, and the second partition wall portion, the insertion plug can form an accommodation space for accommodating the first terminal portion and the second terminal portion inside the housing. Then, the plugging plug can prevent the synthetic resin from flowing into the accommodation space described above from the first opening and the second opening when the insertion plug injects the synthetic resin forming the outer skin member.

  Accordingly, the plug can prevent the synthetic resin from adhering to the first plug ground terminal or the second plug ground terminal accommodated in the accommodation space. For this reason, it is possible to prevent the plug from being unable to ensure conductivity due to the adhesion of the synthetic resin or from being unable to connect the grounding pole piece of the first plug receiver or the grounding electrode pin of the second plug receiver.

In addition, when the first terminal portion and the second terminal portion are accommodated in the accommodation space described above, the first partition portion and the second partition portion function as an assembly guide for the first terminal portion and the second terminal portion. be able to. Thereby, the insertion plug can improve the assembling property of the ground terminal.
Therefore, the insertion plug can reduce the number of parts and can be used in common for plug receptacles of different standards.

Furthermore, in the present invention, the second plug ground terminal is configured to elastically support the connected ground electrode pin, and protrudes from the second plug ground terminal toward the second partition wall. And a protrusion that contacts the second partition wall when the ground electrode pin is connected.
Thereby, even if an insertion plug reduces the number of parts, it can ensure more stable electroconductivity.

  Specifically, when the grounding electrode pin is connected to the second plug grounding terminal, the second plug receiving grounding terminal is in accordance with the size of the grounding electrode pin due to the protrusion that contacts the second partition wall. Elastic deformation is regulated. Therefore, the second plug receiving ground terminal can hold the ground electrode pin by the cooperation of the elastic force and the reaction force from the second partition wall. In other words, since the second plug receiving ground terminal is provided with the protrusion, a more stable holding force can be secured.

Thus, the second plug receiving ground terminal can hold the ground electrode pin with a stable holding force even if the outer diameter of the ground electrode pin varies. For this reason, the insertion plug can ensure more stable conductivity.
Therefore, the insertion plug can secure more stable conductivity even if the number of parts is reduced.

  As an aspect of the present invention, the ground terminal has a substantially flat plate shape larger than the first opening in the longitudinal direction, and is formed integrally with the base of the first terminal portion, and the longitudinal terminal A second flat plate portion that is substantially flat and larger than the size of the second opening portion when viewed from the direction, and is formed integrally with the base portion of the second terminal portion, and includes the closing means, the first opening portion being the first opening portion. The first flat plate portion may be closed, and the second opening may be closed by the second flat plate portion.

  According to the present invention, the insertion plug has a simpler structure than the case where the closing means is configured separately from the ground terminal, and the inflow of the synthetic resin from the first opening and the second opening to the accommodation space. Can be easily prevented.

  Specifically, when the closing means is configured separately from the ground terminal, it is necessary to close the first opening and the second opening after the ground terminal is assembled to the housing. Since the first flat plate portion is formed integrally with the base portion of the second terminal portion and the second flat plate portion is integrally formed with the base portion of the second terminal portion, the plug is connected to the first opening portion and the second plug when the ground terminal is assembled to the housing. Two openings can be closed.

Furthermore, the 1st flat plate part and the 2nd flat plate part are formed larger than the magnitude | size of a 1st opening part and a 2nd opening part, respectively. For this reason, the plug can reliably close the opening formed by the first opening and the second opening.
Therefore, the plug plug can prevent the inflow of the synthetic resin without impairing the assembling property by the blocking means having a simpler configuration, and can secure more stable conductivity.

As an aspect of the present invention, the first partition portion of the housing includes a first fitting portion that fits the first flat plate portion in the longitudinal direction, and the second partition portion of the housing has the longitudinal direction. A second fitting portion into which the second flat plate portion is fitted, and the first fitting portion and the second fitting portion, respectively, when viewed in the longitudinal direction, the first flat plate portion and the second flat plate portion, respectively. The fitting depth in the longitudinal direction in which the first flat plate portion and the second flat plate portion are fitted is determined by the thickness of the first flat plate portion and the second flat plate portion. A large predetermined fitting depth can be formed.
The predetermined fitting depth may be a depth at which the fitting of the first flat plate portion and the second flat plate portion is not easily released.

According to the present invention, the plug can more reliably prevent the synthetic resin from flowing into the accommodation space from the first opening and the second opening.
Specifically, since the fitting depth in the first fitting portion and the second fitting portion is formed larger than the thickness of the first flat plate portion and the second flat plate portion, when assembling a plug pin or the like on the housing Even when the ground terminal assembled to the housing is displaced in the longitudinal direction due to the repulsive force of the covered wire, the plug plug can be easily released from the closed state of the first opening and the second opening. Can be prevented.

  Further, since the first fitting portion and the second fitting portion are formed to have substantially the same size as the first flat plate portion and the second flat plate portion in the longitudinal direction, the ground terminal assembled to the housing is in the longitudinal direction. Even when the plug is displaced, the insertion plug can make it difficult for the synthetic resin to flow into the accommodation space from the first opening and the second opening.

  In addition, when injecting the synthetic resin forming the outer skin member, the first flat plate portion and the second flat plate portion fitted to the first fitting portion and the second fitting portion are pressed by the synthetic resin. For this reason, the ground terminal that has shifted due to the repulsive force of the covered electric wire or the like can be surely placed in the normal assembly position by being pressed by the injected synthetic resin.

Thereby, even if it is a case where the earthing terminal assembled | attached to the housing shifted | deviated to the longitudinal direction by the repulsive force of the covering electric wire, etc., an insertion plug is a 1st opening part in a 1st flat plate part and a 2nd flat plate part. In addition, the second opening can be closed more reliably.
Therefore, since the plug has the first fitting portion and the second fitting portion, the inflow of the synthetic resin can be surely prevented even if the number of parts is reduced, and more stable conductivity can be obtained. Can be secured.

Moreover, this invention is a cord with a plug, wherein the covered wire of the wire cord is connected to the plug pin and the ground terminal in the plug.
According to the present invention, the number of components can be reduced, and a cord with an insertion plug that can be used in common with plug receptacles of different standards can be configured.

  According to the present invention, the number of parts can be reduced, and an insertion plug that can be used in common with plug receptacles of different standards and a cord with an insertion plug can be provided.

The external appearance perspective view which shows the external appearance of a cord with a plug. AA arrow sectional drawing in FIG. Explanatory drawing explaining a German standard plug receptacle and a French standard plug receptacle. Explanatory drawing explaining the component of an insertion plug. The external appearance perspective view which shows the external appearance of a plug pin. The external appearance perspective view which shows the external appearance of a ground terminal. The cross-sectional perspective view which shows the cross-sectional shape of a housing. Explanatory drawing explaining the internal shape of a housing. The rear view which shows the assembly | attachment state before plug body shaping | molding. AA arrow sectional drawing which shows the state which injection-molded the plug body. The disassembled perspective view which shows the external appearance of the housing in another cord with an insertion plug. The external appearance perspective view which shows the external appearance of another cord with an insertion plug.

An embodiment of the present invention will be described below with reference to the drawings.
1 shows an external perspective view of the plug-attached cord 100, FIG. 2 shows a cross-sectional view taken along arrow AA in FIG. 1, and FIG. 3 shows a German standard plug receiver 200 and a French standard plug receiver 300. 4 is an explanatory view for explaining the components of the plug 120, and FIG. 5 is an external perspective view of the plug pin 20. As shown in FIG.

  6 is an external perspective view of the ground terminal 30, FIG. 7 is a cross-sectional perspective view of the housing 40, FIG. 8 is an explanatory view for explaining the internal shape of the housing 40, and FIG. A rear view of the assembled state before molding is shown, and FIG. 10 shows a cross-sectional view taken along the line AA in a state where the plug body 50 is injection molded.

In FIG. 2, the plug body 50 is indicated by a two-dot chain line in order to clarify the cross-sectional shape of the cord 100 with the plug.
3A is an external perspective view of the German standard plug receiver 200, and FIG. 3B is an external perspective view of the French standard plug receiver 300. FIG.
8A is a rear view of the housing 40, and FIG. 8B is a cross-sectional view taken along the line BB in FIG. 8A.
Further, in FIG. 10, only the ground terminal 30 and the covered electric wire 10 connected to the ground terminal 30 are illustrated in order to clarify the covering state of the cord 100 with the plug.

  In the present specification and drawings, the longitudinal direction of the plug pin 20 in the assembled state is the front-rear direction X, and the plug pin 20 side (the left side in FIG. The reverse direction (right side in FIG. 1) is the rear. Furthermore, the direction perpendicular to the front-rear direction X and the direction in which the electric wire cord 110 is led out from the insertion plug 120 is the vertical direction Y, and the insertion plug 120 side of the cord with plug 100 in the vertical direction Y (in FIG. 1) The upper side) is the upper side, and the wire cord 110 side (the lower side in FIG. 1) is the lower side.

  As shown in FIGS. 1 and 2, the cord with plug 100 includes an electric wire cord 110 in which a plurality of covered electric wires 10 are bundled, a German standard plug receptacle 200 (see FIG. 3), and a French standard plug receptacle 300 (see FIG. 1). 3), and an L-type plug 120 that can be connected to both.

  As shown in FIG. 3A, the German standard plug receiver 200 is a plug receiver installed on a wall surface or the like, and includes a receiving portion 201 recessed in a substantially circular shape when viewed from the front, and an insertion plug 120 described later. These are constituted by two pin connection portions 202 that allow connection of the plug pins 20 and two grounding pole pieces 203 connected to the plug 120. Further, on the inner peripheral surface of the receiving portion 201, a pair of holding inner wall portions 204 that protrude from the side toward the inside in the radial direction to hold the plug 120 are formed opposite to each other in the radial direction. doing. The German standard plug receptacle 200 is a plug receptacle that is adopted in Germany, Portugal, Spain, and the like, and corresponds to the plug of the CEE7 / 4 standard.

  On the other hand, as shown in FIG. 3B, the French standard plug receptacle 300 is a plug receptacle installed on a wall surface or the like, and is recessed in a substantially circular shape when viewed from the front and having substantially the same diameter as the German standard plug receptacle 200. The receiving portion 301, two pin connection portions 302 that allow connection of the plug pins 20 of the insertion plug 120, and one ground electrode pin 303 connected to the insertion plug 120. The French standard plug receptacle 300 is a plug receptacle that is adopted in France, Poland, Belgium, and the like and corresponds to the plug of the CEE7 / 5 standard.

As shown in FIGS. 2 and 5, the electric wire cord 110 bundles a plurality of covered electric wires 10 in which a core wire 11 made of a plurality of conductive wires (not shown) is covered with an insulating insulating covering 12. In this case, it is configured to be covered with a covering tube 13.
In this embodiment, two plug pins 20 described later and three covered electric wires 10 connected to the ground terminal 30 are bundled and covered with a covered tube 13. Further, the vicinity of the end portion of the covering tube 13 is wound around the binding band 14.

As shown in FIGS. 1, 2, and 4, the plug 120 includes two plug pins 20, a ground terminal 30, a housing 40, and a plug body 50. The plug 120 corresponds to the CEE7 / 7 standard. It is formed into a shape.
As shown in FIG. 5, the plug pin 20 includes a terminal portion 21 that can be connected to both the pin connection portion 202 of the German standard plug receptacle 200 and the pin connection portion 302 of the French standard plug receptacle 300, and a predetermined amount from the insulating cover 12. A welding portion 22 for welding and fixing the core wire 11 exposed for a length and a caulking portion 23 for caulking and crimping the core wire 11 are integrally formed in this order from the front.

The terminal portion 21 is formed in a substantially solid cylindrical shape extending in the front-rear direction X.
The welded portion 22 has a substantially hexagonal columnar outer shape in contact with a circumscribed circle having a larger diameter than the terminal portion 21 in a front view, and is formed in a hollow cylindrical body. Further, in order to weld and fix the core wire 11 to the plug pin 20, the welded portion 22 is formed with a welded opening portion 24 opened in a predetermined size in the vertical direction Y and the front-back direction X.
The caulking portion 23 is formed in a substantially cylindrical shape having substantially the same diameter as the terminal portion 21 and allowing insertion of the core wire 11.

  As shown in FIGS. 4 and 6, the ground terminal 30 is disposed on the lower side in the vertical direction Y, an open barrel-shaped core wire crimping portion 31 that can be crimped by crimping the core wire 11 exposed from the insulating covering 12. The first terminal portion 32, the second terminal portion 33 disposed on the upper side facing the first terminal portion 32, and the connecting portion 34 for connecting the first terminal portion 32 and the second terminal portion 33 in the vertical direction Y. Are integrated. The ground terminal 30 is formed by pressing a thin plate material having a predetermined thickness punched into a developed shape into a three-dimensional shape.

More specifically, the first terminal portion 32 is fitted to a single ground terminal 35 that contacts the lower grounding pole piece 203 in the German standard plug receptacle 200 and a first fitting portion 45a of the housing 40 described later. The flat plate portion 36 is integrally formed.
The individual ground terminal 35 has a substantially rectangular terminal body 35a having a thickness in the vertical direction Y and extending in the front-rear direction X, and a substantially bent and extended slightly upward from the front end of the terminal body 35a. A rectangular front end bent portion 35b and two substantially rectangular side surface portions 35c that are bent and extended upward at substantially right angles from both rear side surfaces of the terminal main body portion 35a are integrally configured.

  The first flat plate portion 36 extends from the rear end of the terminal main body portion 35a of the personal ground terminal 35, and is bent upward at a substantially right angle. The first flat plate portion 36 is formed in a substantially rectangular shape having an area larger than the size of the personal ground terminal 35 in a front view and larger than an opening area of a first opening 46 of the housing 40 described later.

  The second terminal portion 33 is a French ground that allows the ground terminal pin 37 of the German standard plug receptacle 200 to contact the upper grounding pole piece 203 and the ground pole pin 303 of the French standard plug receptacle 300 by elastic deformation. The terminal 38 and the 2nd flat plate part 39 fitted to the 2nd fitting part 45b of the housing 40 mentioned later are comprised integrally.

The single ground terminal 37 has a substantially rectangular terminal body portion 37a having a thickness in the vertical direction Y and extending in the front-rear direction X, and a substantially bent portion extending slightly downward from the front end of the terminal body portion 37a. A rectangular front end bent portion 37b and two substantially rectangular side surface portions 37c that are bent and extended at substantially right angles downward from both rear side surfaces of the terminal main body portion 37a are integrally configured.
The single ground terminal 37 in the second terminal portion 33 is formed in substantially the same shape as the single ground terminal 35 in the first terminal portion 32 except that the bending direction of the tip bent portion 37b and the side surface portion 37c is different. doing.

  The French ground terminal 38 is folded back inward so as to be inverted from the front side surface of the support portion 38a and a substantially rectangular support portion 38a extending in the front-rear direction X extending below the side surface portion 37c of the personal ground terminal 37. And a contact portion 38b that is gently curved along the outer diameter of the grounding electrode pin 303. The support portion 38a extends from the two side surface portions 37c of the individual ground terminal 37 so that the ground electrode pin 303 can be held between the contact portions 38b. Further, the contact portion 38b is formed to be curved so as to face each other with an interval slightly smaller than the diameter of the ground pole pin 303.

  In addition, a substantially dome-shaped protrusion 38c that protrudes in the opposite direction with respect to the other support 38a side is formed at the approximate center of the support 38a in the front-rear direction X and the up-down direction Y. The projecting portion 38c is formed to have a size that comes into contact with a second partition wall portion of the housing 40 described later when the ground electrode pin 303 is connected.

  The second flat plate portion 39 extends from the rear end of the terminal main body portion 37a of the personal ground terminal 37 and is bent at a substantially right angle downward. In addition, the 2nd flat plate part 39 is a substantially square which has an area larger than the opening area of the 2nd opening part 47 of the housing 40 mentioned later larger than the magnitude | size of the personal ground terminal 37 and the French ground terminal 38 in front view. Is formed.

The connecting portion 34 is a substantially rectangular flat plate extending in the vertical direction Y, and the single ground terminal 35 in the first terminal portion 32 and the single ground terminal 37 in the second terminal portion 33 connect the French ground terminal 38. One supporting portion 38a of the French ground terminal 38 in the second terminal portion 33 is extended upward from one side surface portion 35c of the personal ground terminal 35 in the first terminal portion 32 so as to face each other. Connected to. Further, the connecting portion 34 is provided with a substantially dome-shaped protrusion 34a that protrudes outward at substantially the same position as the rear ends of the first terminal portion 32 and the second terminal portion 33 in the front-rear direction X. Two are formed in the direction Y at a predetermined interval.
The core wire crimping portion 31 is formed in an open barrel shape by bending a thin plate material extending from substantially the center in the vertical direction Y in the connecting portion 34 toward the rear in a substantially U shape when viewed from the front.

  As shown in FIGS. 1 and 4, the housing 40 includes a substantially circular bottom 41 having a thickness in the front-rear direction X, a substantially cylindrical front cylinder 42 extending from the bottom 41, and a front cylinder 42. A substantially cylindrical rear cylinder portion 43 having an outer diameter larger than the outer diameter is integrally formed.

  The bottom 41 is formed to have an outer diameter smaller than the inner diameter of the receiving part 201 of the German standard plug receiver 200 and the receiving part 301 of the French standard plug receiver 300. Further, the bottom 41 includes two plug pins 20 that are allowed to be inserted in the front-rear direction X with an interval corresponding to the interval between the pin connection portion 202 of the German standard plug receptacle 200 and the pin connection portion 302 of the French standard plug receptacle 300. A pin insertion hole 41a and one French insertion hole 41b for allowing the grounding electrode pin 303 of the French standard plug receptacle 300 to be inserted in the front-rear direction X are formed in the vicinity of the upper outer edge.

The front cylinder part 42 is formed in a substantially cylindrical shape extending from the outer edge of the bottom part 41 toward the rear. Further, the front cylindrical portion 42 has an outer circumferential surface projecting radially outward and extending in the front-rear direction X at a position facing the vertical direction Y across the pin insertion hole 41a in a front view. Two box portions 44 are formed.
The box 44 is formed with a single opening 44 a that opens in the front-rear direction X and exposes the single ground terminals 35 and 37 of the ground terminal 30.

  The rear cylinder portion 43 is formed in an outer shape obtained by cutting off a substantially cylindrical side having an outer diameter larger than the outer diameter of the front cylinder portion 42. Further, a notch 43 a (see FIG. 7) through which the electric wire cord 110 is led out is formed below the rear cylinder portion 43.

  As shown in FIGS. 7 and 8, the housing 40 is interposed between the box portions 44 facing each other in the vertical direction Y, and the first terminal portion 32 is allowed to be inserted from behind. A first partition 46 (not shown) that surrounds the first terminal portion 32 with the lower inner surface of the housing 40, and a second opening that allows the second terminal portion 33 to be inserted from behind. 47, a second partition wall (not shown) that surrounds the second terminal portion 33 with the upper inner surface of the housing 40, and a connection wall that connects the first partition wall and the second partition wall in the vertical direction Y. An inner wall portion 45 is formed by integrally forming portions (not shown).

  In other words, the housing 40 is continuous with the first individual space S1 that accommodates the first terminal portion 32 continuously with the lower individual opening 44a, and with the upper individual opening 44a and the French insertion hole 41b. A second housing space S <b> 2 that houses the second terminal portion 33 is formed by the inner surface of the housing 40 and the inner wall portion 45.

  In addition, a first fitting portion 45 a into which the first flat plate portion 36 of the ground terminal 30 is fitted is formed at the rear end of the first partition wall portion in the inner wall portion 45, and the rear end of the second partition wall portion in the inner wall portion 45 is formed. A second fitting portion 45b into which the second flat plate portion 39 is fitted is formed.

  The first fitting portion 45a and the second fitting portion 45b are formed in substantially the same size as the first flat plate portion 36 and the second flat plate portion 39 in the rear view. In addition, the first fitting portion 45a and the second fitting portion 45b are formed in a shape having a fitting depth deeper than the plate thickness of the first flat plate portion 36 and the second flat plate portion 39 in the front-rear direction X. Yes.

  Furthermore, the connection wall portion of the inner wall portion 45 is opened in a substantially slit shape so as to communicate the first accommodation space S1 and the second accommodation space S2, and the connection portion 34 of the ground terminal 30 is allowed to be inserted from the rear. The slit part 45c to be held is formed.

  In addition, the inner wall portion 45 is formed with a pin holding hole 45d for allowing the plug pin 20 to be inserted continuously in the front-rear direction X with the pin insertion hole 41a of the bottom portion 41 and holding the welded portion 22 of the plug pin 20. . The pin holding hole 45d has an inner surface shape substantially the same as the outer shape of the welded portion 22 of the plug pin 20, and is formed in a substantially hexagonal shape when viewed from the rear.

  Further, in the housing 40, a substantially columnar electric wire holding portion 48 extending substantially rearward from the inner surface of the bottom portion 41 in a substantially oval shape when viewed from the rear is provided at a predetermined interval in the circumferential direction when viewed from the rear. One is arranged.

  More specifically, the electric wire holding portion 48 is located near the first opening portion 46, below the pin insertion hole 41a, with two electric wire holding portions 48a arranged symmetrically in the radial direction across the first opening portion 46, and Two electric wire holding portions 48b arranged symmetrically in the radial direction across the inner wall portion 45, and two electric wire holding portions 48c arranged symmetrically in the radial direction across the inner wall portion 45 above the pin insertion hole 41a It is composed.

  The electric wire holding portion 48b and the electric wire holding portion 48c allow the plug pin 20 to be inserted, and form a pin opening portion 49 continuous with the pin holding hole 45d and the pin insertion hole 41a with the inner wall portion 45 and the inner surface of the housing 40. doing.

As shown in FIGS. 1 and 2, the plug body 50 covers the range from the front surface of the housing 40 to the rear side of the binding band 14 with a synthetic resin such as polyvinyl chloride having insulation properties.
More specifically, the plug body 50 is derived from the housing 40, a front covering portion 51 that covers the front of the front tubular portion 42 of the housing 40, a rear covering portion 52 that covers the rear of the front tubular portion 42 and the covered electric wire 10, and the housing 40. The cord covering portion 53 that covers the wire cord 110 is integrally formed.

The front covering portion 51 has an outer diameter that is substantially the same as the inner diameter of the German standard plug receiver 200 and has an outer shape that is cut out in a range corresponding to the holding inner wall portion 204 of the German standard plug receiver 200. More specifically, the front covering portion 51 has a fitting projection 51a that is cut off from the side when viewed from the front and fitted to the pair of holding inner wall portions 204 with the radial direction facing outward.
The rear covering portion 52 is formed in a substantially circular shape in rear view having a larger diameter than the front covering portion 51.
The cord covering portion 53 is formed downward from the rear covering portion 52.

Next, a method for constructing the plug-attached cord 100 by assembling the electric wire cord 110, the plug pin 20, the ground terminal 30, and the housing 40 and forming the plug body 50 by injection molding will be described.
Specifically, after inserting the core wire 11 exposed for a predetermined length from the insulating covering 12 to the welding opening 24 of the welded portion 22 of the plug pin 20, the welded portion 22 and the core wire 11 are welded and added. The fastening portion 23 is crimped to crimp the core wire 11 to connect the plug pin 20 and the covered electric wire 10.

  Further, after the core wire 11 exposed for a predetermined length from the insulating coating 12 is placed on the core wire crimping portion 31 of the ground terminal 30, the core wire crimping portion 31 is crimped with a predetermined crimping tool to crimp the core wire 11 Then, the ground terminal 30 and the covered electric wire 10 are connected.

  Thereafter, the plug pin 20 connected to the covered electric wire 10 is inserted into the pin opening 49 from the rear side of the housing 40 to hold the welded portion 22 of the plug pin 20 in the pin holding hole 45d of the housing 40 and the pin insertion of the housing 40 The terminal portion 21 of the plug pin 20 is exposed to the outside through the hole 41a.

  Subsequently, the ground terminal 30 is assembled to the housing 40 from the rear of the housing 40. More specifically, the first terminal portion 32 of the ground terminal 30 is inserted into the first opening 46 to be accommodated in the first accommodation space S1, and the second terminal portion 33 is inserted into the second opening 47 to obtain the second. It accommodates in accommodation space S2, inserts the connection part 34 in the slit part 45c of the housing 40, and the grounding terminal 30 is assembled | attached to the housing 40. As shown in FIG.

  At this time, the two protrusions 34a in the connecting portion 34 are assembled so as to fit into the slit portion 45c. Further, the first flat plate portion 36 of the ground terminal 30 is fitted to the first fitting portion 45 a of the housing 40, and the second flat plate portion 39 is fitted to the second fitting portion 45 b of the housing 40. .

  Then, the covered electric wire 10 led out from the plug pin 20 is wound around the electric wire holding portion 48 of the housing 40 and wired and held and fixed by the housing 40. More specifically, as shown in FIG. 9, the covered electric wire 10 is wound from the radially inner side to the upper side of the wire holding portion 48 c, and is then wound from the outer side of the wire holding portion 48 b toward the radially inner side. The wire holding part 48a is wound around the inside in the radial direction and fixed to the housing 40. Thereafter, the electric wire cord 110 is assembled so as to be led out from the housing 40 through the notch 43 a of the housing 40.

  In the state where the plug pin 20, the ground terminal 30, and the wire cord 110 are assembled to the housing 40 in this way, as shown in FIG. 10, the range from the front surface of the housing 40 to the rear side of the binding band 14 is made of synthetic resin. A plug body 50 having an L shape in side view is formed by covering by injection molding, and the plug-attached cord 100 is configured. At this time, the plug-attached cord 100 forms the plug body 50 without the synthetic resin flowing into the first accommodation space S1 and the second accommodation space S2 of the housing 40.

  When the cord 100 with an insertion plug as described above is inserted into the German standard plug receptacle 200 shown in FIG. 3A, the plug pin 20 of the cord 100 with an insertion plug is connected to the pin connection portion 202, so The terminals 35 and 37 are brought into contact with the grounding electrode piece 203 to conduct.

  On the other hand, when the cord 100 with the plug is inserted into the French standard plug receptacle 300 shown in FIG. 3B, the plug pin 20 of the cord 100 with the plug is connected to the pin connection portion 302 and the French ground terminal 38 is connected. The grounding electrode pin 303 is connected to and becomes conductive. At this time, the French ground terminal 38 is elastically deformed so that the diameter of the contact portion 38b is increased by the ground pole pin 303, and the protruding portion 38c comes into contact with the second partition wall portion.

  The plug-attached cord 100 having the above-described configuration can be used for the German standard plug receiver 200 and the French standard plug receiver 300 having different standards while reducing the number of parts.

  Specifically, the plug 120 is connected to the pair of personal ground terminals 35, 37 and the French ground by the ground terminal 30 integrally configured with the pair of personal ground terminals 35, 37 and the French ground terminal 38. Compared with the case where the terminal 38 is configured separately, the number of parts can be reduced. Thereby, the insertion plug 120 can aim at reduction of an assembly man-hour and manufacturing cost.

  Further, due to the inner surface of the housing 40 and the inner wall portion 45, the plug 120 allows the first housing space S <b> 1 and the second housing space S <b> 2 to house the first terminal portion 32 and the second terminal portion 33, respectively, inside the housing 40. Can be configured. Then, the first plug 46 and the second opening 47 are closed by the first flat plate portion 36 and the second flat plate portion 39 of the ground terminal 30, so that the insertion plug 120 is a synthetic resin that forms the plug body 50. Can be prevented from flowing into the first accommodation space S1 and the second accommodation space S2 from the first opening 46 and the second opening 47.

  Thereby, the plug 120 can prevent the synthetic resin from adhering to the first terminal portion 32 housed in the first housing space S1 and the second terminal portion 33 housed in the second housing space S2. For this reason, the plug 120 is prevented from being unable to secure conductivity due to the adhesion of synthetic resin, or from being unable to connect the grounding pole piece 203 of the German standard plug receptacle 200 or the grounding pole pin 303 of the French standard plug receptacle 300. it can.

In addition, when the first terminal portion 32 and the second terminal portion 33 are housed in the first housing space S1 and the second housing space S2, the inner wall portion 45 is a set of the first terminal portion 32 and the second terminal portion 33. It can function as an attachment guide. Thereby, the plug 120 can improve the assembling property of the ground terminal 30.
Therefore, the plug 120 can be used for the German standard plug receiver 200 and the French standard plug receiver 300 having different standards while reducing the number of parts.

  Further, the ground terminal 30 includes the first flat plate portion 36 having an area larger than the opening area of the first opening 46 and the second flat plate portion 39 having an area larger than the opening area of the second opening 47. The plug 120 has a simpler configuration than the case where the closing means for closing the first opening 46 and the second opening 47 is provided separately from the ground terminal 30, and the first opening 46 has a simpler configuration. And the inflow of the synthetic resin from the second opening 47 to the first accommodation space S1 and the second accommodation space S2 can be easily prevented.

  Specifically, when the closing means is configured separately from the ground terminal 30, it is necessary to close the first opening 46 and the second opening 47 after the ground terminal 30 is assembled to the housing 40. When the first flat plate portion 36 is integrally formed with the first terminal portion 32 and the second flat plate portion 39 is integrally formed with the second terminal portion 33, the plug 120 is assembled when the ground terminal 30 is assembled to the housing 40. In addition, the first opening 46 and the second opening 47 can be closed.

Further, the first flat plate portion 36 and the second flat plate portion 39 are formed larger than the sizes of the first opening 46 and the second opening 47, respectively. For this reason, the plug 120 can reliably close the opening of the first opening 46 and the second opening 47.
Therefore, the plug 120 can prevent the inflow of the synthetic resin without impairing the assembling property by the simpler closing means, and can secure more stable conductivity.

  Further, since the first fitting portion 45a into which the first flat plate portion 36 is fitted and the second fitting portion 45b into which the second flat plate portion 39 is fitted, the insertion plug 120 has the first opening portion. The inflow of the synthetic resin from the 46 and the second opening 47 to the first accommodation space S1 and the second accommodation space S2 can be more reliably prevented.

  Specifically, since the fitting depth in the first fitting portion 45a and the second fitting portion 45b is formed larger than the thickness of the first flat plate portion 36 and the second flat plate portion 39, the housing 40 When the plug pin 20 or the like is assembled, even if the ground terminal 30 assembled to the housing 40 is displaced in the longitudinal direction due to the repulsive force of the covered electric wire 10, the plug 120 is connected to the first opening 46 and the first plug 46. It is possible to prevent the closed state of the two openings 47 from being easily released.

  Further, since the first fitting portion 45a and the second fitting portion 45b are formed in substantially the same size as the first flat plate portion 36 and the second flat plate portion 39 in the rear view, the grounding assembled to the housing 40 is provided. Even when the terminal 30 is displaced in the front-rear direction X, the plug 120 is formed of the synthetic resin from the first opening 46 and the second opening 47 to the first housing space S1 and the second housing space S2. Inflow can be made difficult.

  In addition, when the synthetic resin forming the plug body 50 is injected, the first flat plate portion 36 and the second flat plate portion 39 fitted to the first fitting portion 45a and the second fitting portion 45b are pressed by the synthetic resin. The For this reason, the ground terminal 30 that has shifted due to the repulsive force of the covered electric wire 10 or the like can surely be accommodated in the normal assembly position by the pressure by the injected synthetic resin.

  Thereby, even if the plug 120 is displaced when the ground terminal 30 assembled to the housing 40 is displaced in the front-rear direction X due to the repulsive force of the covered electric wire 10, the first flat plate portion 36 and the second flat plate portion. 39, the first opening 46 and the second opening 47 can be closed more reliably.

  Accordingly, the insertion plug 120 includes the first fitting portion 45a and the second fitting portion 45b, so that the inflow of the synthetic resin can be surely prevented even if the number of parts is reduced, and the plug is more stable. Conductivity can be ensured.

In addition, by providing the protrusion 38c, more stable conductivity can be ensured even if the number of parts is reduced.
Specifically, when the ground electrode pin 303 is connected to the French ground terminal 38, the French ground terminal 38 corresponds to the size of the ground electrode pin 303 by the projection 38 c that contacts the second partition wall portion. Elastic deformation is regulated. For this reason, the French ground terminal 38 can hold the ground electrode pin 303 by the cooperation of the elastic force and the reaction force from the second partition wall. That is, the French ground terminal 38 can ensure a more stable holding force by including the protrusion 38c.

Thereby, the French ground terminal 38 can hold the ground electrode pin 303 with a stable holding force even if the outer diameter of the ground electrode pin 303 varies. For this reason, the insertion plug 120 can ensure more stable conductivity.
Therefore, the plug 120 can ensure more stable conductivity even if the number of parts is reduced.

  Further, since the two protrusions 34a of the connecting portion 34 are fitted into the slit portion 45c and the connecting portion 34 is inserted into the slit portion 45c, the plug terminal 120 has the ground terminal 30 in the front-rear direction X. It is possible to prevent the displacement from occurring more reliably.

  Further, by connecting the covered wire 10 of the wire cord 110 to the plug pin 20 and the ground terminal 30 in the plug 120, the number of parts can be reduced, and the German standard plug receptacle 200 and the French standard plug receptacle having different standards. The cord 100 with an insertion plug which can be used for 300 can be comprised.

In addition, in the above-mentioned embodiment, although the cord 100 with an insertion plug was made into L shape in side view, it is not limited to this, The electric wire cord 110 leads out from the insertion plug 120 to the side, or the electric wire cord 110 is behind. May be derived.
Moreover, although the core wire crimping part 31 of the ground terminal 30 is an open barrel type, the present invention is not limited to this, and any configuration such as a closed barrel type may be used as long as the core wire 11 is crimped and crimped.

  Further, the French ground terminal 38 is configured to extend from the two side surfaces 37c of the personal ground terminal 37, but the invention is not limited thereto, and the single ground terminal 37 and the French ground terminal 38 are integrated. As long as the second terminal portion 33 is formed, any shape may be used. For example, the support portion 38 a of the French ground terminal 38 is extended from one side surface portion 37 c of the personal ground terminal 37. Then, the contact portion 38a may be formed so as to be folded inward in the radial direction so as to be inverted from the front side surface of the support portion 38a and to have a substantially annular contact portion as viewed from the front so as to hold the ground electrode pin 303. At this time, the other side surface portion 37 c of the personal ground terminal 37 and the connecting portion 34 are connected.

  In addition, as a means for closing the first opening 46 and the second opening 47, the ground terminal 30 is provided with the first flat plate portion 36 and the second flat plate portion 39. While constituting separately, it is good also as a structure which obstruct | occludes the 1st opening part 46 and the 2nd opening part 47. FIG.

  Moreover, although the 1st flat plate part 36 and the 2nd flat plate part 39 were set as the structure fitted with the 1st fitting part 45a and the 2nd fitting part 45b, it is not limited to this, The 1st fitting part 45a and the 1st The first opening 46 and the second opening 47 may be directly closed by the first flat plate portion 36 and the second flat plate portion 39 without providing the two fitting portions 45b.

  Further, the inner wall portion 45 formed integrally with the first partition wall portion, the second partition wall portion, and the connecting wall portion is formed inside the housing 40. However, the present invention is not limited thereto, and the first partition wall portion and the second partition wall portion are not limited thereto. The connecting wall portion may be formed separately.

  Moreover, it is good also as the cord 100 with an insertion plug which accommodated and hold | maintained the thermistor connected with the covered electric wire 10 other than the plug pin 20 and the ground terminal 30 inside. At this time, a thermistor insertion hole for inserting the thermistor is formed in the inner wall portion 45 of the housing 40.

In correspondence between the configuration of the present invention and the above-described embodiment,
The covering of the present invention corresponds to the covering tube 13 of the embodiment,
Similarly,
The outer skin member corresponds to the plug body 50,
The core wire connection portion corresponds to the core wire crimping portion 31,
The first plug receptacle corresponds to the German standard plug receptacle 200,
The first plug ground terminal corresponds to the single ground terminal 35, 37,
The second plug receptacle corresponds to the French standard plug receptacle 300,
The second plug ground terminal corresponds to the French ground terminal 38,
The first partition wall and the second partition wall correspond to the inner wall 45,
The closing means corresponds to the first flat plate portion 36, the second flat plate portion 39, the first fitting portion 45a, and the second fitting portion 45b,
The longitudinal direction corresponds to the front-rear direction X,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

For example, it is good also as the cord 100 with a plug with which the structure of a housing differs with respect to the above-mentioned embodiment.
Specifically, as shown in FIG. 11 which shows an exploded perspective view of the housing 60 in another cord 100 with an insertion plug, the housing 60 accommodates and holds the first housing 610 that accommodates and holds the plug pin 20 and the ground terminal 30. And the second housing 620.

The first housing 610 is integrally formed with two substantially cylindrical holding cylinder portions 611 and a cylinder connecting portion 614 that connects the holding cylinder portions 611 in the radial direction.
The holding cylinder portion 611 is formed in a substantially cylindrical shape whose front end is enlarged in diameter and allows the plug pin 20 to be inserted and held. Further, in the vicinity of the rear end of the holding cylinder portion 611, a fitting groove portion 612 that is recessed along the circumferential direction and fits with a fitting claw portion (not shown) of the second housing 620 is formed. In addition, the holding cylinder portion 611 is formed with an opening groove portion 613 that opens in a slit shape having a predetermined length from the rear end toward the front.

  The tube connecting portion 614 has a predetermined thickness in the vertical direction Y and is formed in a shape that connects the vicinity of the front end of the holding tube portion 611. Note that a thermistor insertion portion that allows insertion of a thermistor (not shown) is formed at the approximate center of the back side of the tube connection portion 614.

  The second housing 620 includes a bottom portion 621, a front tube portion 622, and a rear tube portion 623, and the shapes of the front tube portion 622 and the bottom portion 621 are mainly different from the housing 40 of the above-described embodiment.

  The front cylinder part 622 is formed in an outer shape that is shorter in the front-rear direction X than the front cylinder part 42 in the housing 40 of the above-described embodiment and is cut off from the substantially cylindrical side. In addition, like the front cylinder part 42 in the above-described embodiment, the outer surface of the front cylinder part 622 protrudes radially outward and extends in the front-rear direction X at a position facing in the vertical direction Y. Two box portions 624 are formed.

The bottom portion 621 includes a first bottom portion 625 connected to the front end of the front cylindrical portion 622, a second bottom portion 626 that is substantially rectangular in a front view and projects forward from the first bottom portion 625 so as to be continuous with the box portion 624. It is formed with.
The first bottom portion 625 is recessed in a range corresponding to the first housing 610 when viewed from the front. Furthermore, two insertion openings 625a through which the holding cylinder portion 611 is inserted and a thermistor insertion portion 625b through which the thermistor is inserted are formed in a recessed area in the first bottom portion 625.
In addition, a French insertion hole 626 a that allows the grounding pin 303 of the French standard plug receptacle 300 to be inserted is formed in the upper second bottom portion 626.

  In the state in which the first housing 610 is assembled to the second housing 620, the housing 60 has the first surface so that the front surface of the first housing 610 and the front surface of the second bottom portion 626 of the second housing 620 are on the same plane. A first housing 610 and a second bottom 626 of the second housing 620 are formed.

  The plug pin 20, the ground terminal 30, and the thermistor are assembled to the housing 60 constituted by the first housing 610 and the second housing 620, and the plug body 70 made of synthetic resin is formed by injection molding. As shown in FIG. 12, which shows an external perspective view of the cord 100 with plugs, the cord 100 with plugs is configured.

As shown in FIG. 12, the cord with plug 100 is plugged so that the front surface of the first housing 610, the front surface of the box portion 624 in the second housing 620, and the front surface of the second bottom portion 626 are exposed. The body 60 covers the housing 60.
As described above, the housing 60 may be constituted by the first housing 610 and the second housing 620. Thereby, the cord 100 with an insertion plug can form the 1st housing 610 and the 2nd housing 620 with a different material.

DESCRIPTION OF SYMBOLS 10 ... Covered electric wire 11 ... Core wire 12 ... Insulation sheath 13 ... Covered tube 20 ... Plug pin 30 ... Ground terminal 31 ... Core wire crimping part 32 ... 1st terminal part 33 ... 2nd terminal part 34 ... Connection part 35 ... Private ground terminal 36 ... 1st flat plate part 37 ... Exclusive ground terminal 38 ... French ground terminal 38c ... Projection part 39 ... 2nd flat plate part 40 ... Housing 45 ... Inner wall part 45a ... 1st fitting part 45b ... 2nd fitting part 46 ... first opening 47 ... second opening 50 ... plug body 60 ... housing 70 ... plug body 100 ... plug with plug 110 ... electric wire cord 120 ... plug 200 ... German standard plug receptacle 203 ... grounding pole piece 300 ... French standard plug receptacle 303 ... Grounding pin

Claims (4)

Two plug pins connected to a conductive core wire exposed for a predetermined length from an insulation coating body of the covered electric wire in an electric wire cord in which a plurality of covered electric wires are covered with a covering body;
A pair of first plug ground terminals that contact the pair of ground pole pieces in a first plug receptacle having a pair of ground pole pieces, and permitting connection of the plug pins;
A second plug ground terminal that permits connection of the plug pin and permits connection of the ground pin in the second plug receptacle having one ground pole pin;
A housing that exposes the plug pin and the first plug ground terminal to the outside and accommodates and holds the plug pin; and the second plug ground terminal is connectable to the ground electrode pin and accommodated and held therein
Range leading to the coating of the electric wire cord from the housing and a skin member made of the covering synthetic resin,
The plug pin, the first plug ground terminal, the second plug ground terminal, the housing, and the outer skin member are plugs configured to be connectable to the first plug receiver and the second plug receiver. There,
One of the first plug ground terminals is a first terminal portion,
The first terminal portion;
A second terminal portion formed integrally with the other first plug ground terminal and the second plug ground terminal;
A connecting portion for connecting the first terminal portion and the second terminal portion;
An earth terminal formed integrally with a core wire connection portion to be connected to the core wire of the covered electric wire,
Inside the housing,
A first partition wall provided in the longitudinal direction of the plug pin to allow the first terminal portion to be inserted, and surrounding the first terminal portion with an inner surface of the housing;
Provided with a second opening for allowing the second terminal portion to be inserted in the longitudinal direction, and a second partition wall portion surrounding the second terminal portion with an inner surface of the housing;
In the accommodated state in which the ground terminal is accommodated in the housing, the first terminal portion and the second opening portion are provided with a closing means for closing the ground terminal,
The second plug ground terminal;
It is configured to elastically support the connected grounding pin,
To the second plug ground terminal,
An insertion plug that protrudes toward the second partition wall and includes a protrusion that contacts the second partition wall when the ground electrode pin is connected. To the ground terminal,
A first flat plate portion that is substantially flat and larger than the first opening in the longitudinal direction, and is formed integrally with a base portion of the first terminal portion;
A substantially flat plate larger than the size of the second opening in the longitudinal direction, and a second flat plate portion formed integrally with the base portion of the second terminal portion;
The blocking means;
The plug according to claim 1, wherein the first opening is closed by the first flat plate portion, and the second opening is closed by a second flat plate portion. In the first partition wall of the housing,
A first fitting portion that fits the first flat plate portion in the longitudinal direction;
In the second partition wall of the housing,
A second fitting portion that fits the second flat plate portion in the longitudinal direction;
The first fitting part and the second fitting part,
In the longitudinal direction, the first flat plate portion and the second flat plate portion are formed to have substantially the same size, and the first flat plate portion and the second flat plate portion are fitted in the longitudinal direction. The insertion plug according to claim 2, wherein the depth is formed to a predetermined fitting depth larger than the thickness of the first flat plate portion and the second flat plate portion. A cord with an insertion plug in which the covered electric wire of the electric wire cord is connected to the plug pin and the ground terminal in the insertion plug according to any one of claims 1 to 3.

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