JP2020027681A - connector - Google Patents

Abstract

To provide a connector with a high safety property.SOLUTION: A connector comprises: a housing; a basic member provided adjacent to the housing; and a plurality of terminals held so as to penetrate the housing and a boundary surface between the housing and the basic member. A side surface facing the basic member of the housing is provided with a convex part or a concave part in a space of the plurality of terminals, and the side surface facing the housing of the basic member has a shape corresponding to the convex part or the concave part of the housing. Therefore, a creepage distance between the terminals can be secured.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a connector.

  2. Description of the Related Art In recent years, electric devices have been used in more and more diverse situations, such as when displays using LEDs (Light Emitting Diodes) are used outdoors. With the diversification of uses of electrical equipment, there is an increasing demand for installing cords and connectors for supplying power to these electrical equipment in a non-ideal environment in terms of safety, such as outdoors exposed to rain.

  Some connectors have a structure in which a plurality of terminals are held by a plurality of electrically insulating members (for example, Patent Document 1). Adopting such a structure is more advantageous in terms of the degree of freedom in design and manufacturing process than holding the terminal with a single member. On the other hand, there is room for moisture to permeate the interface between members.

  When a terminal is in contact with a moisture-absorbing electrically insulating material (insulator) in a situation where current and voltage are applied, ionic molecules of the terminal move on the surface or inside the insulator, resulting in poor insulation between the terminals. Or an ion migration phenomenon that causes a short circuit. When a plurality of members are used in a connector, not only a direct short circuit due to moisture but also a decrease in electrical insulation due to an ion migration phenomenon has been a problem in terms of safety.

  In this regard, Patent Literature 2 discloses a waterproof connector in which a waterproof packing is provided on a receiving end side, a filling resin is filled on a tip side from the waterproof packing, and positive and negative electrodes are fitted to the waterproof packing and the resin. ing.

JP 2014-135131 JP 2018-014271 A

  In the invention of Patent Literature 2, the waterproof state is maintained by disposing the waterproof packing and the filling resin in appropriate places. However, even if waterproof packing is used, complete waterproofing cannot be expected. In a structure in which a terminal is held by a plurality of members, even if a small amount of moisture enters between the members, insulation between the terminals may be reduced due to an ion migration phenomenon, which may lead to heat generation or ignition. For this reason, a connector with high safety is required.

  The present invention has been made in view of the above circumstances, and has as its object to provide a highly safe connector.

  In order to solve the above-described problems, the connector according to the present embodiment includes an electrically insulative housing, an electrically insulative base member provided adjacent to the housing, a housing, and the base member. A plurality of terminals held through the base member-facing side surface and the base member-facing housing side surface, the housing-facing base member-facing side surface having a protrusion between the plurality of terminals. A part or a recess is formed, and a side surface of the base member facing the housing has a shape corresponding to the protrusion or the recess of the housing.

FIG. 1 is a diagram illustrating a light emitting system according to an embodiment. It is a development view of a light emitting system. It is sectional drawing of a male connector. It is sectional drawing of a female connector. It is sectional drawing in case a male connector and a female connector are connected. It is a figure showing appearance of a housing member of a female connector. It is a figure showing the appearance of the housing member of a male connector. It is a wiring diagram showing wiring between connectors.

  Hereinafter, the connector according to the present embodiment will be described with reference to the drawings. In the description, an XYZ coordinate system including an X axis, a Y axis, and a Z axis that are orthogonal to each other will be used as appropriate.

  The connector according to the present embodiment is included in a light emitting system 1 schematically illustrated in FIG. The light emitting system 1 includes a power supply unit 11, a light emitting module 12, and an end cap 13, and emits light from the light emitting elements of the light emitting module 12 by electric power from a commercial power supply system. This light emitting system 1 is used for illumination of attractions such as buildings and ferris wheels.

  FIG. 2 is a development view of the light emitting system 1. As shown in FIG. 2, the light emitting system 1 includes three types of parts, a power supply unit 11, a light emitting module 12, and an end cap 13.

  The power supply unit 11 connects the plug 111 connected to an outlet of the commercial power supply system, a rectifier 113 that converts AC power from the commercial power supply into DC power and outputs the DC power, and electrically connects the plug 111 and the rectifier 113. It has a cable 112, a cable 124 for transmitting electricity rectified by the rectifier 113, and a female connector 130 connected to the cable 124. In the power supply unit 11, when the plug 111 is connected to an outlet of a commercial power supply system, the rectifier 113 converts an AC voltage into a DC voltage. Then, a DC voltage is applied to the light emitting module 12 via the female connector 130.

  The cable 124 of the power supply unit 11 is a cable in which a plurality of lead wires are coated with resin, and a connector (female connector 130) is connected to an end. As shown in FIG. 3, the cable 124 includes a first conductive wire 124a and a second conductive wire 124b as lead wires. In the present embodiment, one of the conductors (here, the first conductor 124a) is connected to the positive output of the power supply unit 11, and the other (here, the second conductor 124b) is connected to the negative output.

  Returning to FIG. 2, the light emitting module 12 includes a plurality of light emitting units 20, a pair of connectors (a female connector 130 and a male connector 140), and a cable 124.

  The end cap 13 is a cap attached to a connector (the male connector 140 or the female connector 130) of the light emitting module 12 as necessary. The end caps 13 are prepared according to the shapes of the male connector 140 and the female connector 130, respectively. For example, when another light emitting module 12 is not connected to the female connector 130 of the light emitting module 12, the end cap 13 is attached to the female connector 130 of the light emitting module 12. This can prevent corrosion and rust of the first terminal 134a and the second terminal 134b of the female connector 130 due to the influence of the humidity of the outside air and the like.

  The cable 124 of the light emitting module 12 is a cable that has one end connected to the female connector 130 and the other end connected to the male connector 140, and supplies electric power flowing between both connectors to the light emitting unit 20.

  The light emitting unit 20 includes a light emitting element (for example, an LED) connected to the cable 124 and a covering member that covers a connection between the cable 124 and the LED.

  The male connector 140 of the light emitting module 12 is a connector that can be connected to the female connector 130 of the power supply unit 11. When the male connector 140 of the light emitting module 12 is connected to the female connector 130 of the power supply unit 11, the light emitting module 12 and the power supply unit 11 are electrically connected.

  The connectors (female connector 130 and male connector 140) of the light emitting module 12 are also used to connect the light emitting modules 12. When a connector (female connector 130 or male connector 140) of a certain light emitting module 12 is connected to a corresponding connector of another light emitting module 12, the light emitting modules 12 are electrically connected in series. With respect to the light emitting modules 12 connected to the power supply unit 11, a plurality of light emitting modules 12 can be connected in series based on the capacity of the rectifier 113.

  Since the light emitting system 1 is used for outdoor illumination, the female connector 130 and the male connector 140 of the light emitting module 12 are expected to be used for a long time in the presence of moisture such as rain and dew. To cope with this, the female connector 130 and the male connector 140 have a waterproof structure, but moisture may penetrate inside due to long-term exposure to rain. Furthermore, since the connection of the connector is performed outdoors, there is a possibility that moisture may enter during the connection. Therefore, in the present embodiment, as described later, a structure is adopted in which the rate of serious accidents such as heat generation and ignition is reduced even if moisture penetrates inside.

  The connectors (female connector 130 and male connector 140) are connected to a cable 124 at one end and to a paired connector at the other end (male connector 140 for female connector 130, female connector 130 for male connector 140). It is a connecting device. In the following description, in the connector, the side to which the cable 124 is connected (the plus X direction in FIG. 3 and the minus X direction in FIG. 4) is the direction of the base side, and the direction in which the mating connector is connected (the minus X direction in FIG. 4 is referred to as a connection side direction.

  The female connector 130 has a structure as shown in a sectional view 3, and the male connector 140 has a structure as shown in a sectional view 4. The female connector 130 and the male connector 140 have a paired structure. The female connector 130 and the male connector 140 can be connected to each other as shown in the sectional view 5.

  As shown in FIG. 3, the female connector 130 includes a plurality of connection terminals (a first terminal 134a and a second terminal 134b), a housing member 131 holding a connection element, a base member 132, an outer shell member 133, And a holder 135.

  The first terminal 134a and the second terminal 134b are connected to different lines of the cable 124, respectively, and are formed of an electrically conductive member (for example, copper) that is electrically connected to a connection element of a paired connector (male connector 140). Terminal. Specifically, the first terminal 134a and the second terminal 134b are cylindrical metal elements into which the pin-shaped connection elements of the male connector 140 can be inserted.

  As shown in FIG. 6, the housing member 131 is a cylindrical member formed by injection molding using an electrically insulating plastic material such as polyamide (66PA, 46PA), polybutylene terephthalate (PBT), and polycarbonate (PC). It is.

  The housing member 131 is provided with a plurality of passages (a first passage 131pa and a second passage 131pb) penetrating from a bottom surface 131d on the base side of a substantially cylindrical column to a front surface 131f on the connection side. The first path 131pa and the second path 131pb extend substantially in parallel from the base side of the connector to the connection side, and have a shape corresponding to the connection end side of the first terminal 134a and the second terminal 134b. Therefore, by installing the first terminal 134a and the second terminal 134b in the first path 131pa and the second path 131pb, the terminal of the male connector 140 among the first terminal 134a and the second terminal 134b is connected to the housing member 131. A part of the leading end side (connection side) can be held.

  On the bottom surface 131d, a protrusion 131c is formed between the first path 131pa and the second path 131pb. That is, in the projection 131c, the housing member 131 protrudes in the base direction (minus X direction) in a convex manner as compared with the other portion of the bottom surface 131d. The shape of the protrusion 131c (the height and width of the protrusion of the protrusion, etc.) is determined by the shape of the other portion, the voltage applied to the first terminal 134a and the second terminal 134b, the expected situation in which the connector is used, and the like. You.

  In the present embodiment, the protrusion 131c crosses the center of the opening of the first path 131pa and the opening of the second path 131pb, and extends over the entire diameter of the bottom surface 131d. The two terminals 134b are raised at a height such that they protrude by 1 cm from the end on the base side to the base side. The width of the projection 131c is 5 mm.

  As will be described later, the protrusions 131c can increase the creepage distance between the first terminal 134a and the second terminal 134b, thereby improving the safety of the female connector 130.

  An annular rib 131r for retaining the holder 135 is provided in the center of the cylinder of the housing member 131, and a screw portion 131a for fixing the outer shell member 133 is provided on the base side.

  Returning to FIG. 3, the base member 132 is an electrically insulating resin member that is located adjacent to the base side of the housing member 131 and holds the base side portions of the first terminal 134a and the second terminal 134b. The base member 132 is in contact with the housing member 131 at a front surface 132f which is a side surface on the connection side. In other words, the front surface 132f and the bottom surface 131d form a boundary surface between the base member 132 and the housing member 131.

  In the base member 132, a third path 132pa through which the first terminal 134a and the first conductive wire 124a connected thereto are passed, a fourth path 132pb through which the second terminal 134b and the second conductive wire 124b connected thereto are passed, Is provided. The third path 132pa and the third path 132pa open on the front surface 132f of the base member 132, that is, on the connection side surface of the base member 132 (the plane adjacent to the housing member 131). Specifically, one end of the third path 132pa is opened on the bottom surface of the base member 132, and the other end is opened on the front surface 132f at a position corresponding to the opening on the bottom surface 131d of the first path 131pa. One end of the fourth path 132pb opens to the bottom surface of the base member 132, and the other end opens on the front surface 132f at a position corresponding to the opening on the bottom surface 131d of the second path 131pb. Therefore, the third path 132pa and the first path 131pa pass through a positive electrode (the first conductive wire 124a and the first terminal 134a connected thereto) that extends from the bottom surface of the base member 132 to the front surface 131f of the housing member 131. Form a path. Similarly, the fourth path 132 pb and the second path 131 pb pass through a negative electrode (a second conductive wire 124 b and a second terminal 134 b connected thereto) that runs from the bottom surface of the base member 132 to the front surface 131 f of the housing member 131. Form a path.

  The end on the base side of the first terminal 134a is located on the third path 132pa. The end of the second terminal 134b on the base side is located on the fourth path 132pb. Then, the first conductor 124a and the second conductor 124b are soldered to the first terminal 134a and the second terminal 134b, respectively, at the position of the base member 132 (open circles in FIG. 3). As a result, the third path 132pa is a path that holds the base side of the first terminal 134a and passes through the first conductive wire 124a and the soldered portion. Similarly, the fourth path 142pb is a path through which not only the base portion of the second terminal 134b but also the second conductive wire 124b soldered thereto. In the present embodiment, a waterproof effect and a physical protective effect are obtained by protecting the connection portion between the cord and the terminal with the insert-molded resin member. The terminal and the conductor may be fixed by caulking.

  As described above, a part of the connection side is held by the housing member 131 and a part of the base side is held by the base member 132, so that the first terminal 134a and the second terminal 134b are aligned with the front surface 132f and the bottom surface 131d. It is fixed through the boundary surface between the two members which are surfaces.

  On the front surface 132f, between the opening of the third path 132pa and the opening of the fourth path 132pb, a recess 132r having a shape corresponding to the projection 131c formed on the bottom surface 131d of the housing member 131 is formed. . With the protrusion 131c and the recess 132r, the creepage distance between the first terminal 134a and the second terminal 134b penetrating this boundary at the boundary between the base member 132 and the housing member 131 is longer than the physical distance between the two terminals. I can do it.

  The outer shell member 133 is an electrically insulating resin member formed by injection molding, and protects the outer shell of the female connector 130. A screw portion 133a is provided at an end on the connection side of the outer shell member 133, and the screw portion 133a and the screw portion 131a of the housing member 131 are engaged with each other to fix them.

  The holder 135 is a connector holder for fixing the male connector 140. The holder 135 is provided with a screw portion 135a at an end on the connection side, and is installed rotatably in the Z-axis direction. Further, it is prevented from coming off by the annular rib 131r of the housing member 131.

  In the present embodiment, the base member 132 includes a housing member 131, a first terminal 134a and a second terminal 134b, and a first conductor 124a and a second conductor 124b connected to the first terminal 134a and the second terminal 134b, respectively. Is a core member made of epoxy resin and is insert-molded. Note that insert molding may be performed using a known material such as PBT (polybutylene terephthalate) or polyphenylene sulfide (PPS) instead of the epoxy resin.

  Here, a manufacturing process of the female connector 130 in the present embodiment will be described. First, the housing member 131 is manufactured by injection molding using a mold. Next, the first terminal 134a is installed in the first path 131pa of the housing member 131, and the second terminal 134ab is installed in the second path 131pb in such a manner as to protrude from the bottom surface 131d to the base side. Then, at the end on the base side, the first conductor 124a is connected to the first terminal 134a, and the second conductor 124b is connected to the second terminal 134b by soldering. Further, the housing member 131 (particularly, the protrusion 131c), the first terminal 134a and the first conductor 124a connected thereto, and the second terminal 134b and the second conductor 124b connected thereto are connected to the inside of the mold. Then, a resin is injected around these cores, and insert molding is performed so as to be integrated, thereby forming a base member 132. Thereafter, the holder 135 and the outer shell member 133 are installed, and the outer shell member 133 and the cable 124 are sealed with a waterproof tape. In this way, a cable with a connector that is waterproof and has a sufficient creepage distance between terminals is completed.

  As described above, the female connector 130 is connected to the male connector 140 (or the end cap 13), and is exposed to rain or snow for a long time while voltage and current are applied to the first terminal 134a and the second terminal 134b. May be used in places with high temperatures and high humidity. Under this condition, moisture may permeate between the first terminal 134a and the second terminal 134b and the housing member 131, between the housing member 131 and the outer shell member 133, and the like. Then, the positive electrode (the anode, here, the first terminal 134a and the first conductive wire 124a connected thereto) and the negative electrode (the cathode, here, the second terminal 134b and the second conductive wire 124b connected thereto) are connected. The housing member 131 and the base member 132, which are electrically insulating members in contact with each other, may absorb moisture and cause ion migration. As a result, the electrical insulation between the anode and the cathode is reduced, and in a severe case, a short circuit occurs.

  According to the results of the experiment, the ion migration phenomenon is caused by the fact that moisture penetrates into a boundary portion (between the bottom surface 131d and the front surface 132f) between the housing member 131 and the base member 132, and at this boundary portion, the first terminal 134a and the second terminal 134a. 134b in many cases. Therefore, in the female connector 130 of the present embodiment, the projection 131c is provided on the housing member 131 to secure the creepage distance between the anode and the cathode longer than the physical distance between the two electrodes. The degree to which a substantial decrease in insulation occurs is reduced.

  Note that the ion migration phenomenon occurs between the first terminal 134a and the second terminal 124b on the base side of the portion where the first terminal 134a and the second terminal 124b are connected to each other, and between the first terminal 124a and the second terminal 124b. It may proceed inside the base member 132. Therefore, in the present embodiment, the protrusion 131c is raised to the base side more than the connection between the first terminal 134a and the first conductor 124a and the connection between the second terminal 134b and the second conductor 124b. Even between the conductors, a decrease in insulation due to the ion migration phenomenon is reduced.

  The male connector 140 connected to the female connector 130 has a structure as shown in FIG. The male connector 140 includes a plurality of connection terminals (a first terminal 144a and a second terminal 144b), a housing member 141, a base member 142, and an outer shell member 143. The male connector 140 is different in that the connection side has a shape that forms a pair with the female connector 130, and the other configurations are the same.

  The first terminal 144a and the second terminal 144b are metal pin terminals that can be fitted into the first terminal 134a and the second terminal 134b of the female connector 130, respectively.

  The housing member 141 of the male connector 140 has a structure as shown in FIG. The housing member 141 is similar to the housing member 131 of the female connector 130 in the structure on the base side and the material used for manufacturing, but differs in that it has a cylindrical shape on the connection end side. In the housing member 141, in addition to the threaded portion 141a (corresponding to the threaded portion 131a) on the base side, a threaded portion 141b is provided on the outer peripheral surface of the cylindrical shape on the connection end side. In addition, an outlet on the connection side of the first path 141pa and the second path 141pb is opened in a front surface 141f (a cylindrical bottom surface) of the housing member 141. The housing member 141 holds the first terminal 144a and the second terminal 144b protruding from the opening in the connection direction (+ X direction) for a predetermined length of connection direction. A projection 141c is formed on the bottom surface 141d of the housing member 141, similarly to the housing member 131.

  As shown in FIG. 5, the inside shape of the cylindrical shape of the housing member 141 corresponds to the shape of the connection end side of the housing member 131 of the female connector 130, and can be fitted into the connection end side of the female connector 130. In this state, the first terminal 144a and the second terminal 144b protruding from the front surface 141f, which is the inner bottom surface of the cylinder, are inserted into the first terminal 134a and the second terminal 134b provided on the front surface 130f of the male connector 140, respectively. You. Further, by tightening the screw portion 141b and the screw portion 135a provided on the inner wall of the holder 135, the male connector 140 and the female connector 130 are held, and it is possible to prevent water droplets from entering the terminal position. . The male connector 140 and the female connector 130 are connected in this way.

  Returning to FIG. 4, similarly to the base member 132 of the female connector 130, the base member 142 includes a third path 142pa through which the first terminal 144a and the first conductive wire 124a connected to the first terminal 144a pass, and a second terminal 144b and the second terminal 144b. And a fourth path 132pb through which the second conductive wire 124b is connected. A concave portion 142r having a shape corresponding to the protrusion 141c is provided on a side surface on the connection side of the base member 142 (a front surface 142f facing the housing member).

  The first conductive wire 124a and the first terminal 144a are electrically connected together in a third path 142pa, and the second conductive wire 124b and the second terminal 144b are electrically connected together in a fourth path 142pb. The first terminal 144a and the second terminal 144b penetrate a boundary surface between the base member 142 and the housing member 141, which is a mating surface of the front surface 142f and the bottom surface 141d, and the housing member 141, and protrude by a predetermined length in the connector connection direction. So that it is fixed. The projection 141c and the recess 142r ensure that the creeping distance between the first terminal 144a and the second terminal 144b at the boundary surface is longer than the physical distance.

  The outer shell member 143 is a member similar to the outer shell member 143 of the female connector 130, and has a screw portion 143a that can be fixed to the screw portion 141a.

  Here, the male connector 140 is manufactured similarly to the female connector 130. That is, the first terminal 144a is provided on the first path 141pa and the second terminal 144b is provided on the second path 141pb of the housing member 141 formed by injection molding using a mold. Install. Then, at the end on the base side, the first conductor 124a is connected to the first terminal 144a, and the second conductor 124b is connected to the second terminal 144b by soldering. Further, the housing member 141, the first terminal 144a and the second terminal 144b protruding from the bottom surface 141d of the housing member 141 toward the end, and the first conductor 124a and the second conductor 124b connected to the core, respectively, are attached to the core. The base member 142 is formed by insert molding. Then, the outer shell member 143 is installed, and the outer shell member 143 and the cable 124 are sealed with a waterproof tape.

  As with the female connector 130, the male connector 140 also has an anode (the first terminal 144a and the first conductor 124a connected thereto) and a cathode (the second terminal 144b and the second conductor 124b connected thereto). May cause an ion migration phenomenon. Therefore, on the bottom surface 141d of the housing member 141, a protrusion 141c that protrudes to the base side is provided between the first terminal 144a and the first terminal 144a to secure the creepage distance of the boundary surface. Also, in the male connector 140, the protrusion 141c is raised to the base side more than the connection between the first terminal 144a and the first conductor 124a and the connection between the second terminal 144b and the second conductor 124b. In addition, the decrease in insulation due to the ion migration phenomenon between the conductive wires is reduced.

  As shown in FIG. 5, the holder 135 is fixed to the housing member 141 by tightening the screw portion 135a of the holder 135 and the screw portion 141b of the housing member 141, and the first terminal 134a, the second terminal 134b, and the The connection between the first terminal 144a and the second terminal 144b is waterproof. Further, by tightening the screw portion 131a of the housing member 131 and the screw portion 133a of the outer shell member 133, the outer shell member 133 is fixed to the housing member 131, and the housing member 131 and the outer shell member 133 The connection is waterproofed. Similarly, by tightening the screw portion 141a of the housing member 141 and the screw portion 143a of the outer shell member 143, the outer shell member 143 is fixed to the housing member 141, and the housing member 141 and the outer shell member 143 are fixed. Is waterproof.

  FIG. 8 is a wiring diagram showing wiring between the male connector 140 and the female connector 130 of the light emitting module 12. The male connector 140 has two terminals (a first terminal 144a and a second terminal 144b). On the other hand, the female connector 130 also has two terminals (a first terminal 134a and a second terminal 134b). The first terminal 144a and the second terminal 144b of the male connector 140 are connected to the first terminal 134a and the second terminal 134b of the female connector 130 via a cable 124, respectively.

  Further, the LEDs 21 and the resistors R constituting the plurality of light emitting units 20 are connected in series to the first terminal 144a and the second terminal 144b of the male connector 140 via the cable 124. Therefore, when the male connector 140 of one light emitting module 12 is connected to the female connector 130 of another light emitting module 12, a group of LEDs 21 of each light emitting module 12 are connected in parallel with each other.

  The power supply unit 11, the light emitting module 12, and the end cap 13 configured as described above are connected to the female connector 130 of the power supply unit 11 and the male connector 140 of the light emitting module 12, for example, as illustrated in FIG. The end cap 13 is attached to the female connector 130 of the light emitting module 12 to be integrated. Thereby, the light emitting system 1 is configured. In the light emitting system 1, the number of the light emitting modules 12 can be increased as necessary.

  As described above, in the female connector 130 and the male connector 140 according to the present embodiment, the housing members 131 to 141 (hereinafter, simply referred to as the housing members when not distinguishing between them) and the base members 132 to 142 (hereinafter, referred to). By separately providing the basic member when not distinguishing between them, the freedom of design and the safety performance are higher than in the case of forming with a single member. On the other hand, since the penetration of moisture into the interface between the housing member and the base member cannot be completely prevented physically, the structure is devised to maintain electrical insulation. Specifically, in the connector according to the present embodiment, the protrusions 131c to 141c (hereinafter, referred to as protrusions only when not distinguishing between them) are formed on the bottom surface of the housing member, so that a plurality of terminals (first terminals) are formed. Creepage distances between the first terminal 144a and the second terminal 134b and between the first terminal 144a and the second terminal 144b (hereinafter simply referred to as connection terminals when the terminals are not distinguished) are secured.

  In the present embodiment, a configuration is adopted in which a housing member manufactured by injection molding is used as a core and a base member is molded by insert molding. For this reason, the housing member having the desired shape of the projection can be mass-produced at low cost, and the base portion corresponding to the shape of the bottom surface of the housing member and the position and the shape of the connection terminal can be easily formed.

  In addition, by protecting the connection portion between the connection terminal and the conductor with the insert-molded base member, the connection portion can be protected from dust, moisture, and physical deformation.

  As described above, when the insulating member (the housing member and the base member) absorbs moisture between the connection terminals (and the conductive wires connected to the connection terminals), an ion migration phenomenon occurs, and the insulation property decreases. In the present embodiment, a protrusion is provided between a plurality of terminals passing through the boundary surface, particularly at the boundary surface between the base member and the housing member where the ion migration phenomenon easily occurs. Therefore, the creeping distance (the distance along the surface of the housing member or the base member which is an insulator) can be longer than the physical distance between the two terminals. As a result, even if the ion migration phenomenon occurs, there is a structural margin before the conductor ionized at the boundary portion advances to cover the surface of the insulator and cause a short circuit, and safety can be improved.

  In particular, when power is supplied to the illumination light emitting module 12 as in the light emitting system 1 of the present embodiment, it is assumed that the connector is exposed to rain and dew for a long period of time. It is difficult to completely prevent a small amount of moisture from penetrating between members, such as a gap between the connection terminal and the housing member and a contact surface between the housing member and the base member. Then, countermeasures against the ion migration phenomenon as well as the direct short circuit due to rainwater are particularly important.

  The embodiments of the present invention have been described above, but the present invention is not limited to the embodiments. For example, in the above embodiment, as shown in FIGS. 3 and 4, the protrusion is formed between the connection terminals of the housing member on the connection side, and the recess is formed in the base member. However, the present invention is not limited to this, and a recess may be formed in the housing member and a protrusion may be formed in the base member. In addition, the size and shape of the protrusion may be changed as long as the creepage distance is longer than the physical distance by forming a concave or convex portion between the plurality of terminals. For example, the height of the protrusion may be set to 5 mm or more and the width may be set to 2 mm or more, or the shape of the protrusion may be a disk shape. Furthermore, the number of protrusions (convex portions) or recesses is not limited to one, and a plurality of protrusions (convex portions) may be formed on the boundary surface between the base member and the housing member.

  In the above embodiment, the housing member is a resin member manufactured by injection molding. However, the present invention is not limited to this. The housing member may be a resin member manufactured by insert molding. Further, a configuration in which a resin member obtained by injection molding a base member may be employed. Alternatively, the housing member and the base member may be made of any material as required, such as silicon rubber or a metal member plated with insulating material. In any case, a protrusion or a recess may be formed between the plurality of connection terminals at the boundary surface between the plurality of members.

  Further, the number of terminals is not limited to two, and may be three or more. In this case, a housing member having such a shape that a protrusion is formed between the terminals on the boundary surface between the base member and the housing member so that a creepage distance between the terminals serving as the anode and the cathode can be secured. It may be used. For example, in the case of three terminals, the connector may be formed using a housing having a Y-shaped projection.

  In the above embodiment, the case where the female connector 130 and the male connector 140 are connected to both ends of the cable 124 has been mainly described. However, a cable having one of the female connector 130 and the male connector 140 at one end may be used. Alternatively, only the female connector 130 (or the male connector 140) that is not connected to the cable may be sold or distributed alone. In this case, the user may connect the connector sold separately to the end of an arbitrary cable. Alternatively, it can be used as a receptacle for electric equipment. Furthermore, an example has been described in which both the female connector 130 and the male connector 140 that form a pair have protrusions or recesses on the bottom surface of the housing member, but if only one connector has a protrusion or recess, The above-described effect is obtained for the connector (1).

  While some embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. This new embodiment can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. The present embodiment and its modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 Light emitting system 11 Power supply unit 12 Light emitting module 13 End cap 20 Light emitting unit 21 LED
111 Plug 112 Cable 113 Rectifier 124 Cable 124a First conductor 124b Second conductor 130 Female connector 131 Housing member 131a Screw 131c Projection 131d Bottom 131f Front 131pa First path 131pb Second path 131r Annular rib 132 Base member 132f Front 132r Recess 132pa Third path 132pb Fourth path 133 Outer shell member 133a Screw portion 134a First terminal 134b Second terminal 135 Holder 135a Screw portion 140 Male connector 141 Housing member 141a Screw portion 141b Screw portion 141c Projection 141d Bottom surface 141f Front surface 141pa First Path 141pb Second path 142 Base member 142f Front surface 142r Recess 142pa Third path 142pb Fourth path 143 Outer shell member 143a Screw part 144a 1 terminal 144b 2nd terminal 145a Screw part R Resistance

Claims (4)

An electrically insulating housing;
An electrically insulating base member provided adjacent to the housing,
A plurality of terminals retained so as to penetrate the housing, the base member, and a side surface of the housing facing the base member, and a side surface of the base member facing the housing;
With
A convex portion or a concave portion is formed between the plurality of terminals on a side surface of the housing facing the base member,
A side surface of the base member facing the housing has a shape corresponding to a convex portion or a concave portion of the housing,
A connector characterized in that: The base member is insert-molded using the plurality of terminals held by the housing in a state where the terminals protrude from the side of the housing facing the base member toward the base member, and the housing as a core. A resin member,
The connector according to claim 1. The connector is connected at one end to a cord,
The cord is connected to the plurality of terminals in a passage provided in the base member,
The base member is the resin member that is insert-molded using the cord connected to the plurality of terminals as a core.
The connector according to claim 2. Further comprising an outer shell member constituting an outer shell of the connector,
The housing includes a fixing portion that fixes the outer shell member to an outer peripheral portion,
The connector according to claim 1.

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