JP2011142058A - Cable connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector capable of preventing deterioration in insulating performance thereof and capable of securing water resistance and durability in the case of a hard laying situation submerged in sea water or the like and even if a cable itself is reduced in diameter. <P>SOLUTION: This water-proof connector includes: a receptacle 120 formed by covering a sleeve terminal with a receptacle body 122 made of a rubber group material and having an engaging projection 123 in the tip thereof; and a plug 130 formed by covering a pin terminal with a plug body 132 made of a rubber group material and having an engaging recess 133 in the tip thereof. The water-proof connector is covered with a cylindrical protector 150 formed of an upper half-split body 152 and a lower half-split body 153 capable of being divided from each other. Outer peripheral surfaces of the receptacle body 122 and the plug body 132 are formed with a receptacle recess 127 and a plug recess 137, and an inner peripheral surface of the cylindrical protector 150 is formed with projections 180 and 190 to be fitted in the receptacle recess 127 and the plug recess 137, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cable connector used for connecting an outdoor wiring, particularly an aerial lighting cable.

  Conventionally, a solar system for general housing or commercial use is constructed by connecting a plurality of solar cell modules installed on the rooftop of a building by cable connection, and a waterproof connector is used for this cable connection. Yes.

  As a waterproof connector, a waterproof connector shown in Patent Document 1 is known. In this waterproof connector, a fitting convex portion and a fitting concave portion that can be fitted to each other are provided at the tips of the receptacle outer casing and the plug outer casing, respectively. A plurality of protrusions are formed on the outer peripheral surface of one fitting convex portion so as to be continuous in a sawtooth shape in cross section, and the inner peripheral surface of the other fitting concave portion is provided with each protrusion of the fitting convex portion. A shape in which a plurality of cylindrical portions are continuous is formed as a portion to be fitted to the top portion. The plurality of continuous cylindrical portions are formed so that the inner diameter of the inner peripheral surface of the other fitting recess is larger at the tip than at the back.

  By fitting the fitting convex portion and the fitting concave portion configured in this way, the receptacle and the plug are connected to each other while ensuring high waterproofness.

  By the way, as an outdoor wiring in which a waterproof connector is used, there is an aerial lighting wiring used in an airport or an airport.

  Airports require a large site for arrival and departure of aircraft, a larger airspace, and there are noise problems, so they are often set up a little away from large cities, especially at sea.

  Therefore, aeronautical lighting wiring installed at airports and airfields is used for solar systems and the like because it is assumed to be used under severe conditions such as sea breeze and seawater as well as being exposed to sunlight. It is necessary to have higher waterproofness than general outdoor wiring.

  In particular, in the case of guide light wiring arranged on the side of the runway, the cable connection part via the connector is housed in a hand hole formed on the side of the runway, etc., together with the transformer, etc. Is done. Rain, seawater, etc. enter the handhole due to wind and rain. Therefore, the connection part (connector part) of the cable housed in the hand hole is resistant to deterioration of insulation performance due to long-term water immersion, high temperature water immersion, etc. In other words, it requires characteristics having higher waterproofness and higher durability than ordinary outdoor wiring.

  In order to ensure this characteristic, for example, as shown in Patent Document 2, a configuration in which a connection portion of an aerial lighting cable via a connector is covered with a box-shaped cable protector is conceivable.

  The protector of Patent Document 2 includes a protective case that accommodates a cable connection portion that is a connection portion between cables. The protective case has an upper half and a lower half that can be opened and closed, and is inserted through the side wall of the boundary between the upper half and the lower half so that the inlet side and the outlet side of the cable connection portion are inserted. A hole is formed. The protector is in a state where the cable connection part is accommodated in the protective case, and the cables located in the cable insertion hole are crimped at the inner surface of the cable insertion hole to cover the cable connection part. Connect the cables firmly.

  It is considered to improve the waterproofness and durability of the cable connection portion by using the thus configured protector for the connection portion of the cable for aerial lighting.

JP 2004-186112 A JP 2005-137176 A

  However, in the configuration in which the cable connection portion is protected by the protector to improve waterproofness and durability, the cables are protected from each other by tightening at the crimp portion of the side wall portion where the cable is led out from the inside of the protective case. It is a structure fixed via.

  For this reason, when the connection part of the cable protected by this protector is folded and accommodated in the hand hole, the bending load applied to the protector and the cable is concentrated on the crimping part of the cable and a crack is generated from this part. There is a risk of deteriorating the insulation performance. Furthermore, in recent years, there has been a trend to shift aviation lighting from halogen light bulbs to LEDs (Light Emitting Diodes), and as a result, a small amount of current flows through the cable itself used in the wiring for aviation lighting, so the cable itself is also thin. It is considered to be. As described above, when the cable itself becomes thin, that is, when the cable for aviation lighting is reduced in diameter, the bending load applied to the protector and the cable is concentrated on the crimping portion of the cable at the connection portion of the cable having the above configuration. When applied, it is considered that the insulation performance is more likely to deteriorate due to the thin cable.

  The present invention has been made in view of such points, and is waterproof without being deteriorated in insulation performance even under severe installation conditions such as being immersed in seawater or when the cable itself is reduced in diameter. And it aims at providing the cable connector which can ensure durability.

  One aspect of the cable connector of the present invention comprises a pair of a receptacle in which a female terminal is covered with a receptacle outer casing made of a rubber-based material and a plug in which a male terminal is covered with a plug outer casing made of a rubber-based material, A cylindrical shape comprising a waterproof connector provided with a fitting convex portion and a fitting concave portion that can be fitted to each other at the front end portions of the receptacle outer covering body and the plug outer covering body, and a split body that can be divided to accommodate the waterproof connector. A cable connector having a protective covering, wherein an outer peripheral surface of the fitting convex portion is formed such that a plurality of protrusions are continuous in a sawtooth shape in cross section, and an inner peripheral surface of the fitting concave portion is A portion to be fitted to the top of the ridge is formed in a right cylindrical shape, and outer circumferential surfaces of the receptacle outer body and the plug outer body are respectively formed with recesses along the circumferential direction, and the cylindrical protective covering The inner peripheral surface of, a configuration in which the convex portion fitted to each of the recess is formed.

  According to the present invention, the waterproof performance and durability can be ensured without deterioration of the insulation performance even under severe installation conditions such as being immersed in seawater or when the cable itself is reduced in diameter.

The figure which uses for description of the cable connector which concerns on one embodiment of this invention Sectional drawing which shows the receptacle of the cable connector which concerns on one embodiment of this invention Side sectional view which shows the plug of the cable connector which concerns on one embodiment of this invention AA arrow end view of the cylindrical protective body in FIG. The top view which shows the principal part structure of the cylindrical protector which covers the connection part of a receptacle and a plug The figure which shows a cylindrical protector FIG. 7 is a cross-sectional view taken along line B-B in FIG. 6. The figure which shows the cylindrical protective body divided | segmented into the upper half body and the lower half body The figure which shows the assembly method of the cylindrical protective body which combines the divided | segmented upper half body and a lower half body Diagram showing the cable connector placed in the hand hole

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram for explaining a cable connector according to an embodiment of the present invention. 1A is a side view of the receptacle and the plug in the cable connector according to the embodiment of the present invention, and FIG. 1B shows the fitting state of the receptacle and the plug in the cable connector. FIG. 1C is a side view showing the appearance of the cable connector.

  As shown in FIG. 1, in the cable connector 100, a waterproof connector composed of a pair of a receptacle 120 and a plug 130 (see FIG. 1A) that can be fitted to each other, and a fitted receptacle 120 and plug 130 (waterproof). A cylindrical protector (see FIG. 1C) 150 that holds the connector and mechanically protects the connector.

  The receptacle 120 is provided at one end of the cable 12, and the plug 130 is provided at one end of a cable 13 different from the cable 12.

  FIG. 2 is a side sectional view showing a receptacle of a cable connector according to an embodiment of the present invention.

  In the receptacle 120 shown in FIG. 1A and FIG. 2, a sleeve terminal (female terminal) 121 joined to the cable 12 is covered with a housing 129 and a rubber-based material (here, thermoplastic) is used. It is covered with a receptacle outer package (hereinafter referred to as “receptacle body”) 122 of a receptacle 120 made of an elastomer.

  As shown in FIGS. 1A and 2, the housing 129 is disposed on the distal end side of the receptacle body 122, and the portion of the receptacle body 122 where the housing 129 is disposed is fitted into the fitting recess 133 of the plug 130. It becomes the fitting convex part 123 to be. As shown in FIG. 2, an opening 123 a communicating with one end of the sleeve terminal 121 is formed at the distal end portion 124 of the fitting convex portion 123, and a pin terminal (male terminal) 131 of the plug 130 (see FIG. 3). Is inserted. The housing 129 is formed of a hard plastic material having flame retardancy such as modified PPE.

  Three annular protrusions 125 are formed on the outer peripheral surface of the fitting convex portion 123 from the distal end portion 124 to the proximal end side to prevent the plug 130 from coming out of the fitting concave portion 133, and the axial cross section is sawtooth. It is continuous so that it becomes a shape. That is, in each protrusion 125, the outer peripheral surface bulges outward toward the base end side of the fitting convex portion 123, and converges to the axial center side through the maximum diameter portion.

  Moreover, the outer diameter of the top part which becomes the largest diameter part of each protrusion 125 is formed so as to increase slightly from the distal end side to the proximal end side of the fitting protrusion 123 in the continuous protrusion 125. That is, in FIG. 1A and FIG. 2, the ridges located at the three centers from the ridge 125 a on the rightmost side (the tip side of the fitting convex portion 123) that continues from the tip portion 124 through the stepped portion. The outer diameter of the top portion is slightly larger in 125b. Furthermore, the outer diameter of the top of the protrusion 125c located on the leftmost side (the base end side of the fitting protrusion 123) is slightly larger than the protrusion 125b. Moreover, the top part of this protrusion 125 is formed in the shape where the axial direction cross section was rounded.

  Moreover, in the fitting convex part 123, the hook-shaped base end part 126 whose outer diameter is larger than the outer diameter of the protrusion 125c is formed in the base end side of the protrusion 125c via the narrow groove 126a. The base end portion 126 is circular when viewed from the front, and has an outer diameter that is equal to or substantially equal to the outer diameter of the fitting recess 133. The cable end in the receptacle main body 122 is fixed to the receptacle main body 122 with the waterproof sleeve 12a fitted on a portion adjacent to the portion connected to the sleeve terminal 121 on the base end side.

  On the outer peripheral surface of the receptacle main body 122 of the receptacle 120, a groove-shaped recess (hereinafter also referred to as “receptacle-side recess” for convenience) 127 extending along the circumferential direction and opening radially outward is formed. ing.

  The receptacle-side recess 127 is formed on the proximal end side of the fitting convex portion 123 in the receptacle main body 122 of the receptacle 120, adjacent to the proximal end portion 126 of the fitting convex portion 123, and forms a step with the proximal end portion 126. To do. In this receptacle-side recess 127, when the connecting portion between the receptacle 120 and the plug 130 is covered with the cylindrical protector 150 (see FIG. 4), the convex portion of the cylindrical protector 150 (specifically, the receptacle-side convex portion). 180) is fitted.

  FIG. 3 is a side sectional view showing a plug of the cable connector according to the embodiment of the present invention.

  On the other hand, in the plug 130 shown in FIGS. 1A and 3, the cable 13 is led out from the base end side, and has a cylindrical fitting recess 133 as a distal end portion.

  As shown in FIG. 3, in the plug 130, the pin terminal 131 joined to the cable 13 is covered with a plug outer package (hereinafter referred to as “plug main body”) 132 made of a rubber-based material (here, thermoplastic elastomer). ing.

  The distal end side of the plug main body 132 has a cylindrical shape that extends further in the distal direction than the distal end of the pin terminal 131 so as to surround the pin terminal 131. A fitting concave portion 133 into which the fitting convex portion 123 (see FIGS. 1A and 2) of the receptacle main body 122 is fitted is formed by the cylindrical portion.

  On the inner peripheral surface of the fitting recess 133, a portion fitted to the top of the protrusion 125 formed on the fitting protrusion 123 of the receptacle body 122 is formed in a right cylindrical shape. Further, on the inner peripheral surface of the fitting recess 133, three cylindrical portions 134a, 134b, and 134c having different inner diameters are continuously formed. Specifically, the inner peripheral surface of the fitting recess 133 has an inner diameter that increases in the order of the inner cylindrical portion 134a, the cylindrical portion 134b positioned in the middle, and the cylindrical portion 134c positioned at the distal end.

  The inner diameter of the cylindrical portion 134a is the top of the protrusion 125a (see FIG. 2) of the fitting projection 123, the inner diameter of the cylindrical portion 134b is the top of the protrusion 125b (see FIG. 2), and the inner diameter of the cylindrical portion 134c is the protrusion. It is formed in such a size that the top of 125c (see FIG. 2) is pressed.

  With this configuration, in the fitted state of the fitting convex portion 123 and the fitting concave portion 133, the protrusion 125a is the top of the cylindrical portion 134a of the fitting concave portion 133, and the protrusion 125b is the top of the cylindrical portion 134b. 125c presses the top of the cylindrical portion 134c toward the axial center.

  When the fitting convex portion 123 and the fitting concave portion 133 are fitted in this way, the fitting convex portion 123 and the fitting concave portion 133 are brought into close contact with each other via the top of the protrusion 125, and the receptacle main body 122 and the plug main body 132 are Water tightness is ensured.

  The fitting recess 133 is provided with an annular projecting piece 136 projecting inward between the cylindrical portions 134. The projecting piece 136 is formed by the stepped portion of the tip end portion 124 of the fitting convex portion 123 and the stepped portion of each protrusion 125 (each top portion) when the fitting convex portion 123 is fitted into the fitting concave portion 133. It is formed so as to be caught on the step part). Thereby, when the front-end | tip part 124 of the fitting convex part 123 is engage | inserted to a predetermined position, each protrusion piece part 136 of the fitting recessed part 133 fits in each step part of the front-end | tip part 124 and each protrusion 125, and is clear. Response is obtained.

  Therefore, the operator can connect the receptacle main body 122 and the plug main body 132 in a good fitting state with reference to the response when inserting the fitting convex portion 123 into the fitting concave portion 133. The cable end in the plug main body 132 is fixed to the plug main body 132 in a state where the waterproof sleeve 13a is externally fitted to a portion adjacent to the portion connected to the pin terminal 131 on the base end side.

  A groove-like recess (hereinafter also referred to as “plug-side recess” for convenience) 137 extending along the circumferential direction and opening radially outward is formed on the outer peripheral surface of the plug main body 132.

  The plug-side recess 137 is formed adjacent to the fitting recess 133 on the proximal end side of the fitting recess 133 in the plug main body 132 of the plug 130, and forms a step with the proximal end portion of the fitting recess 133.

  When the connecting portion between the receptacle 120 and the plug 130 is covered with the cylindrical protective body 150 (see FIG. 4), the plug-side concave portion 137 has a convex portion (specifically, the plug-side convex portion). 190) is fitted.

  The plug-side recess 137 configured as described above has a groove width different from that of the receptacle-side recess 127 (see FIGS. 1A and 2) formed on the outer peripheral surface of the receptacle body 122 of the receptacle 120, and has a groove width different from that of the plug body 132. It is formed on the outer peripheral surface.

  Here, the groove width W2 of the plug-side recess 137 in the plug 130 is larger than the groove width W1 of the receptacle-side recess 127 in the receptacle 120.

  As a result, even if the cables are connected, the operator can determine which cable is the cable with the receptacle 120 attached or the cable with the plug 130 attached only by visually recognizing the width of the recess. Can be determined.

  Further, in the connection state of the receptacle 120 and the plug 130, even when a bending load is applied to the connection portion, the groove width W2 of the plug-side recess 137 is larger than the groove width W1 of the receptacle-side recess 127, so Compared with the case where the plug-side recess 137 has the same groove width, the bending load applied to the plug-side recess 137 can be dispersed.

  With the convex portions 180 and 190 (see FIG. 4) of the cylindrical protective body 150 positioned in the receptacle-side concave portion 127 and the plug-side concave portion 137, the cylindrical protective member 150 is connected to the receptacle 120 and the plug 130. It is attached to cover the part.

  FIG. 4 is an end view taken along line AA of the cylindrical protector in FIG.

  The cylindrical protector 150 shown in FIG. 1C and FIG. 4 has a cylindrical shape in which the receptacle 120 and the plug 130 are respectively led out at both ends, and the connecting portion of the receptacle 120 and the plug 130 (fitting connected to each other). By accommodating the convex portion 123 and the fitting concave portion 133), the connecting portion is mechanically protected.

  FIG. 5 is a plan view showing the configuration of the main part of the cylindrical protector that covers the connection portion of the receptacle and the plug, and the cable connector of FIG. 5 is the cylindrical protector in the cable connector shown in FIG. Is shown in an open state. FIG. 6 is a view showing a cylindrical protector, and FIG. 7 is a cross-sectional view taken along line BB in FIG.

  4 to 7 is formed of a hard plastic material having flame retardancy such as polyphenylene ether (Poly Phenylene Ether) or modified PPE (modified-Poly Phenylene Ether), and the receptacle 120 and the plug 130. It is detachably attached to the connecting part.

  Here, as shown in FIGS. 4 to 7, the cylindrical protector 150 includes an upper half 152 and a lower half 153 obtained by dividing the cylindrical body. The upper half body 152 and the lower half body 153 are joined to each other at one of the edge portions 152a and 153a via a hinge portion 154 so as to be freely opened and closed.

  As shown in FIGS. 4 and 5, in the hinge portion 154, the shaft portion 154a formed on the edge portion 153a of one half body (lower half body 153) is connected to the other half body (upper half body). 152), a hook-shaped hook portion 154b formed on the edge portion 152a and opened on one side is rotatably engaged.

  In addition, the other edge portions 152b and 153b of both the upper half body 152 and the lower half body 153 are provided with hooking claws 155 and hooking recesses 156 that are hooked to each other in the closed state. The engaging claw 155 may be provided in the upper half 152, and the engaging recess 156 that engages with the engaging claw 155 may be provided in the lower half 153.

  In addition, when the same structure as the other edge parts 152b and 153b is provided without providing the hinge part 154, that is, when the opening surface surfaces of both halves 152 and 153 are combined into a cylindrical body, both are attached and detached. A hooking means (corresponding to the hooking claw portion 155 and the hooking concave portion 156 that are hooked to each other) by a claw that is freely fixed and a concave portion that hooks on the hook may be provided. Further, when the hinge portion 154 is provided on the cylindrical protector 150, the hinge portion 154 is formed by joining the upper half body 152 and the lower half body 153 so as to be rotatable, and by using both the half bodies 152 and 153. Any shape and configuration may be used as long as the configuration forms a shape.

  Thus, the upper half 152 and the lower half 153 that are rotatably joined via the hinge portion 154 have a substantially semicircular cross section, and the connection between the fitting convex 123 and the fitting concave 133. It has a length in the longitudinal direction (cable axial direction) covering the portion.

  On the inner peripheral surface of the upper half 152, a housing region 158 for housing the fitting convex portion 123 and the fitting concave portion 133 is partitioned in the longitudinal direction (axial direction of the connector), and the receptacle-side concave portion 127 and the plug Protrusions 182 and 192 that engage with the side recesses 137 are provided.

  Further, on the inner peripheral surface of the lower half 153, an accommodation region 158 for accommodating the fitting convex portion 123 and the fitting concave portion 133 is partitioned in the longitudinal direction (axial direction of the connector), and the receptacle-side concave portion Convex portions 183 and 193 that engage with the 127 and the plug-side concave portion 137 are provided.

  The convex portions 182 and 183 formed on the inner peripheral surfaces of both the upper half body 152 and the lower half body 153 form the receptacle-side convex portion 180 and are fitted into the receptacle-side concave portion 127. In FIG. 5, the connection part of the receptacle 120 and the plug 130 (fitting part of the fitting convex part 123 and the fitting concave part 133) is arranged inside the lower half 153. For this reason, the convex part 183 in the lower half 153 is fitted in the receptacle-side concave part 127.

  Convex portions 192 and 193 formed on the inner peripheral surfaces of both the upper half body 152 and the lower half body 153 form a plug-side convex portion 190 and are fitted in the plug-side concave portion 137. In FIG. 5, the connection portion of the receptacle 120 and the plug 130 (the fitting portion of the fitting convex portion 123 and the fitting concave portion 133) is disposed inside the lower half portion 153. A convex portion 193 at 153 is fitted into the receptacle-side concave portion 127.

  As shown in FIG. 6, the convex portions 182 and 183 are provided on the inner peripheral surfaces of the upper half body 152 and the lower half body 153 on the one end portion 150 a side from the housing region 158 and on the one end portion 150 a. It is formed adjacent to the accommodation region 158 at a portion to be removed.

  That is, the receptacle-side convex portion 180 constituted by the convex portions 182 and 183 has one end portion 150a on the inner peripheral surface of the cylindrical protective body 150 in which the upper half body 152 and the lower half body 153 are combined in a cylindrical shape. It is formed on the side and adjacent to the accommodation region 158 at a portion excluding the one end 150a.

  Further, the plug-side convex portion 190 constituted by the convex portions 192 and 193 is located on the inner peripheral surface of the cylindrical protective body 150 on the other end portion 150b side of the accommodating region 158 and at the portion excluding the other end portion 150b. 158 is formed adjacent to 158.

  As described above, the receptacle-side convex portion 180 and the plug-side convex portion 190 are located at the positions (both ends of the cylindrical protective body 150 excluding both end portions 150a and 150b with the housing region 158 at the center portion interposed therebetween. Formed at a predetermined interval from the portions 150a and 150b.

  The receptacle-side convex portion 180 and the plug-side convex portion 190 are concentric with the upper half body 152 and the lower half body 153 and have an inner diameter larger than the inner diameters of the upper half body 152 and the lower half body 153. It is small.

  Further, in the receptacle-side convex portion 180 and the plug-side convex portion 190, the axial center side from the inner peripheral surface of the cylindrical protective body 150 (specifically, the inner peripheral surfaces of the upper half body 152 and the lower half body 153). The height of the protrusion 120 corresponds to the depth of the receptacle-side recess 127 and the plug-side recess 137 of the receptacle 120 and plug 130.

  Further, in the upper half 152 and the lower half 153, the inner diameters of the semicircular grooves 152c and 153c forming the inner periphery of the one end 150a of the cylindrical protective body 150 are arranged to face the inner surface of the one end 150a. The size is such that a gap is formed between the outer periphery of the receptacle 120 to be formed.

  Similarly, in the upper half 152 and the lower half 153, the inner diameters of the semicircular grooves 152d and 153d forming the inner periphery of the other end 150b of the cylindrical protector 150 are opposed to the inner surface of the other end 150b. Thus, a gap is formed between the plug 130 and the outer peripheral surface of the plug 130. In addition, the cable 12 and the cable 13 may be located in the one end part 150a and the other end part 150b. In this case, the inner diameters of the semicircular grooves 152c, 153c, 152d, and 153d are larger than the outer diameters of the cables 12 and 13 in the state of being cylindrical.

  The cylindrical protective body 150 configured as described above can be easily assembled by simply closing and joining the upper half body 152 and the lower half body 153.

  FIG. 8 shows a cylindrical protector divided into an upper half and a lower half, and FIG. 9 shows a cylindrical protector that combines the divided upper half and the lower half. It is a figure which shows an assembly method.

  That is, the cylindrical protector 150 includes the upper half 152 and the lower half 153 that are divided as shown in FIG. The hook part 154b of 152 is engaged (refer FIG. 9).

  Thereby, the upper half body 152 and the lower half body 153 are joined to each other via the hinge portion 154 so as to be freely rotatable.

  Connection of the cables 12 and 13 using the cable connector 100 including the cylindrical protector 150 configured as described above will be described.

  When connecting the receptacle 120 formed at the end of the cable 12 and the plug 130 formed at the end of the cable 13, first, as shown in FIG. It inserts in the fitting recessed part 133 of the plug 130, and both are fitted.

  Next, the connection portion between the receptacle 120 and the plug 130 formed by fitting the fitting convex portion 123 and the fitting concave portion 133 is accommodated in the accommodating region 158 of the cylindrical protective body 150. At this time, the connecting portion is disposed in one receiving region 158 of the upper half 152 or the lower half 153, and the protrusion 182 or the protrusion 183 constituting the receptacle-side protrusion 180 is connected to the receptacle-side recess. The projection 192 or the projection 193 constituting the plug-side projection 190 is fitted into the receptacle-side recess 127.

  Next, the engaging claw 155 and the engaging recess 156 are engaged by rotating and closing the upper half 152 and the lower half 153 via the hinge 154. Thereby, the cylindrical protection body 150 becomes a cylindrical body that covers the connection portion of the receptacle 120 and the plug 130.

  At this time, the cylindrical protector 150 is configured so that the fitting convex portion 123 of the receptacle 120 and the plug are plugged in a state in which the convex portions 182, 183, 192, and 193 are positioned in the receptacle-side concave portion 127 and the plug-side concave portion 137. The fitting part with 130 fitting recessed parts 133 is accommodated.

  As a result, the convex portions 182 and 183 of the cylindrical protector 150 are fitted into the receptacle-side concave portion 127 to resist the pulling force applied to the receptacle 120 itself. That is, the convex portions 182 and 183 engage with the base end portion 126 of the fitting convex portion 123 when the receptacle 120 is pulled, and the convex portions 182 and 183 themselves are on the side surface on the base end side in the receptacle-side concave portion 127. I will talk about it. Thereby, the movement of the receptacle 120 itself in the pulling direction is restricted.

  Similarly, the convex portions 192 and 193 of the cylindrical protector 150 are fitted into the plug-side concave portion 137 to resist the tensile force applied to the plug 130 itself. That is, when the plug 130 is pulled, the convex portions 192 and 193 are engaged with the proximal end surface of the engaging concave portion 133, and the convex portions 192 and 193 themselves are engaged with the proximal end side surface of the plug-side concave portion 137. As a result, the movement of the plug 130 itself in the pulling direction is restricted.

  As a result, the movement of the fitting portion of the fitting convex portion 123 and the fitting concave portion 133 (that is, the connecting portion between the receptacle 120 and the plug 130) itself is restricted, and the connection state can be maintained and the insulation performance can be sufficiently secured.

  Further, on the inner peripheral surface of the cylindrical protector 150, convex portions 182, 183, 192, and 193 projecting toward the axial center in a direction orthogonal to the axial direction are respectively provided inside the receptacle concave portion 127 and the plug-side concave portion 137. It is arranged to fit in. For this reason, both ends 150a and 150b of the cylindrical protective body 150 are provided in the fitting portions of the fitting convex portion 123 and the fitting concave portion 133 that are improved in waterproofness by being covered with the cylindrical protective body 150. Water does not easily enter from the side, and the waterproofness of the fitting portion is further improved.

  By simply connecting the receptacle 120 and the plug 130 in this way and attaching the cylindrical protector 150 to this connecting portion, it is possible to easily perform cable connection that ensures waterproofness and has stable insulation performance. it can.

  Further, the connecting portion of the plug 120 and the receptacle 130 (the fitting portion of the fitting convex portion 123 and the fitting concave portion 133) is held by the cylindrical protector 150 without applying a load to the plug 120 and the receptacle 130 itself. . Further, at both end portions 150 a and 150 b of the cylindrical protective body 150, a gap is formed between these inner peripheral surfaces and the outer periphery of the receptacle body 122 of the receptacle 120 and the outer periphery of the plug body 132 of the plug 130. That is, the cylindrical protector 150 is led out to the outside without tightening the receptacle 120 and the plug 130 at both ends 150a and 150b in a state where the movement in the axial direction is restricted on both sides of the connector connecting portion at the center portion. is doing.

  In this way, the waterproof connector (receptacle 120 and plug 130) is maintained in its connected state by the cylindrical protector 150 without being loaded.

  Thereby, even when a bending stress is applied to the cable connector 100 itself, a local load is not applied to the waterproof connector (receptacle 120 and plug 130) and the cables 12 and 13 connected thereto. For example, when bending stress is applied to the cable connector 100 itself, the receptacle 120 and the plug 130 located at the inner portions of the both ends 150a and 150b are slightly bent inside the both ends 150a and 150b, and then the both ends 150a and 150b. 150b is contacted.

  That is, when a bending stress is applied to the cable connector 100 itself, the stress does not act directly on the receptacle 120 and the plug 130 located in the inner portions of the both end portions 150a and 150b, and the cable connector having excellent flexibility. 100 can be realized.

  Thereby, as shown in FIG. 10, the cable connector 100 is arranged in a state of being bent together with the transformer 51 connected in the handhole 50 by being used for connection of the cable for aviation lighting, and Even under severe installation conditions immersed in seawater, high waterproofness and durability can be ensured without deterioration of insulation performance.

  In addition, when used for connection of cables for aerial lighting, maintenance of wiring is mainly performed at night. Even in this case, according to the present embodiment, the connected receptacle 120 and plug 130 can be removed simply by checking the widths of the flag-side recess 127 and the plug-side recess 137 of the receptacle 120 and the plug 130 by tentacles, visual recognition, or the like. It is possible to recognize which cable is the cable to which the receptacle 120 or the plug 130 is connected. Thereby, the quickness at the time of exchanging a cable can be aimed at.

  In the cable connector 100, the fitting recess 133 has a continuous shape of a plurality of cylindrical portions 134a, 134b, 134c. Therefore, when this is formed, a portion that is undercut except for each protruding piece portion 136 is formed. There is no, and can be released without difficulty. Therefore, when the plug body 132 is molded, each part of the fitting recess 133 is not deformed, and can be manufactured stably as designed. In addition, the annular projecting piece 136 provided in the fitting recess 133 is undercut at the time of molding, but is merely a guide for the fitting state. There is no possibility that watertightness with the plug main body 132 is impaired.

[Evaluation test]
Using the configuration of the cable connector 100 according to the present embodiment (Example 1), tests for prevention and durability were performed and compared with the case of the cable connection structure using the following conventional configuration. The results are shown in Table 1.

  In Comparative Example 1, the outer periphery of each cable or the connector attached to the cable is fixed by crimping on both side wall surfaces through which the cable is inserted in the protector that covers the connection part of the cables to be connected as in Reference Document 2. A connector with a structure was used.

  In Comparative Example 2, the receptacle 120 and the plug 130 of the present embodiment are used to cover with the protector of the cited document 2, and the respective side walls through which the receptacle 120 and the plug 130 are inserted are attached to the respective cables or cables. In addition, a connector having a structure in which the outer periphery of the receptacle 120 and the plug 130 is fixed by pressure bonding.

  As shown in Table 1, in the cable connector 100 of Example 1, as a long-term water immersion test, the insulation resistance after being immersed in water at room temperature for 1000 hours was 25000 MΩ or more.

  Moreover, in the cable connector 100 which is Example 1, the insulation resistance after being immersed in 70 degreeC warm water for 20 days was 10000 MΩ or more as a high temperature immersion test.

  Furthermore, the cable connector 100 was confirmed to be broken, such as peeling of the adhesive, even when it was bent under the conditions of a bending strength of 60 °, a speed of 40 times / minute, a frequency of 5000 times, and a load of 500 g as a bending performance test. could not.

  Since the cable connector 100 according to the present embodiment can clear the long-term immersion test, the high temperature immersion test, and the bending performance test, it can be used as a connection for an aerial lighting cable in a severe installation environment such as an airport. . Furthermore, according to the present embodiment, the effect similar to the above-described effect can be obtained even when the cable diameter becomes smaller with the decrease in the amount of current supplied instead of the LED from the halogen light bulb to the aerial lighting. Therefore, it will be used more effectively as a cable connector in the connection of cables for aviation lighting.

  It should be noted that the present invention can be variously modified in components and the like without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

  The cable connector according to the present invention can ensure waterproofness and durability without deterioration of insulation performance even under severe installation conditions such as being immersed in seawater or when the cable itself is reduced in diameter. It has an effect and is useful as a cable connector used for connecting cables in outdoor wiring, particularly in wiring for aeronautical lighting where the installation environment is severe.

DESCRIPTION OF SYMBOLS 12, 13 Cable 100 Cable connector 120 Receptacle 122 Receptacle main body 123 Fitting convex part 126 Base end part 127 Receptacle side concave part 130 Plug 132 Plug main body 133 Fitting concave part 137 Plug side concave part 150 Cylindrical protector 152 Upper half part 153 Lower half split body 154 Hinge part 155 Engagement claw part 156 Engagement recessed part 158 Storage area 180 Receptacle side convex part 182, 183, 192, 193 Convex part 190 Plug side convex part 150a One end part of cylindrical protective body 150b Cylindrical protective body Other end of

Claims (5)

A receptacle in which a female terminal is covered with a receptacle outer package made of a rubber-based material;
The male terminal consists of a pair of plugs covered with a plug outer body made of a rubber-based material, and a fitting convex part and a fitting concave part that can be fitted to each other are provided at the front ends of the receptacle outer casing and the plug outer casing, respectively. Waterproof connector,
A cable connector having a cylindrical protective covering made of a severable split body that houses the waterproof connector,
The outer peripheral surface of the fitting convex portion is formed such that a plurality of protrusions are continuous in a sawtooth shape in cross section,
The inner peripheral surface of the fitting recess is formed in a right cylindrical shape at a portion fitted to the top of each protrusion.
Recesses are formed along the circumferential direction on the outer peripheral surfaces of the receptacle outer casing and the plug outer casing,
On the inner peripheral surface of the cylindrical protective covering, convex portions are formed that fit into the concave portions, respectively.
Cable connector. The width of the recess formed on the outer peripheral surface of the receptacle outer package and the width of the recess formed on the outer peripheral surface of the plug outer package are different.
The cable connector according to claim 1. The convex portions of the cylindrical protective covering body sandwich the region that accommodates the fitting portions of the fitting convex portion and the fitting concave portion on the inner peripheral surface of the cylindrical protective covering body, and both end portions of the cylindrical protective covering body Formed in a position excluding
The cable connector according to claim 1 or 2. The inner diameter of both ends of the cylindrical protective covering is larger than the outer diameter of the cable or waterproof connector corresponding to the both ends,
The cable connector according to any one of claims 1 to 3. Used to connect aeronautical lighting cables,
The cable connector according to any one of claims 1 to 4.

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