JP5887153B2 - Waterproof cap - Google Patents

Description

  The present invention relates to a waterproof cap, and more particularly, to a waterproof cap that covers a terminal of an outdoor device and suppresses water from entering the terminal.

  Conventionally, it is known that a waterproof cap is provided at a terminal to which a power supply line is connected so that a sufficient waterproof effect can be obtained for an outdoor device such as an antenna installed outdoors. Regarding a conventional waterproof cap, Japanese Patent Laid-Open No. 10-125388 (Patent Document 1) discloses a rainproof cap that covers a power feeding portion to which a coaxial cable is connected, a cylindrical portion, a tapered portion following the cylindrical portion, and a tapered portion. The lower end of the overlapping portion is formed in a V shape, and when the coaxial cable is inserted into the rain cap, a gap is formed at the lower end of the overlapping portion, and the inside of the overlapping portion is formed from the gap. A technique is disclosed in which rainwater infiltrated into is released.

  When connecting a coaxial cable to a terminal of an outdoor device, a coaxial connector is attached to the tip of the coaxial cable, and the coaxial connector is fixed to the terminal. In the waterproof cap described in Patent Document 1, since it is necessary to attach a coaxial connector to the tip of the coaxial cable after the coaxial cable is inserted through the waterproof cap, there is a problem in that the work man-hours in the outdoors increases and the workability is inferior. . In order to solve this problem, Japanese Patent Application Laid-Open No. 2010-231890 (Patent Document 2) discloses a waterproof cap in which a coaxial cable with a plug can be inserted to improve workability.

JP-A-10-125388 JP 2010-231890 A

  In the waterproof cap described in Patent Document 2, it is necessary to form a large opening in the waterproof cap in order to attach the waterproof cap from the plug side to the coaxial cable to which the plug is attached. Therefore, a gap is formed around the outer peripheral surface of the coaxial cable in a state where the coaxial cable and the waterproof cap are assembled to the outdoor device. If this gap is large, a large amount of water may enter the waterproof cap via the gap. If the infiltrated water reaches the terminal, it may cause contact failure.

  Conventionally, there has been a demand to make the length of the waterproof cap as small as possible in order to facilitate the arrangement of the coaxial cable. On the other hand, in order to prevent water that has entered the waterproof cap from reaching the terminal, it is necessary to increase the length of the waterproof cap in the extending direction. Disadvantage in placement. Furthermore, if the length of the waterproof cap is large, the waterproof cap may be deformed by routing the coaxial cable, and the gap around the outer peripheral surface of the coaxial cable may increase. In other words, the conventional waterproof cap has a problem that it is difficult to ensure sufficient water stopping performance.

  This invention is made | formed in view of said subject, The main objective is providing the waterproof cap which can ensure sufficient water stop performance while improving workability | operativity.

  A waterproof cap according to the present invention is a waterproof cap that covers a terminal of an outdoor device, and includes a main body portion, a wall portion, and a skirt portion. The main body is formed in a cylindrical shape having one end and the other end, one end is opened, and one end is attached to an outdoor device. The wall portion has a plate shape that closes the other end of the main body portion. The wall is formed with a slit penetrating the wall in the thickness direction. The skirt portion is connected to the other end of the main body portion and extends in the extending direction of the main body portion.

  In the waterproof cap, the skirt portion may be made of an elastic material, and may be formed in a tapered shape toward the tip that is separated from the other end.

  In the waterproof cap, the wall portion may have a central portion and a peripheral portion, joined to the main body portion at the peripheral portion, and the central portion may protrude to one end side with respect to the peripheral portion.

  In the waterproof cap, the wall portion has a central portion and a peripheral portion, and is joined to the main body portion at the peripheral portion, and the thickness of the central portion may be smaller than the thickness of the peripheral portion.

  In the waterproof cap, the skirt portion may have a corrugated shape having a diameter that relatively changes at the tip.

  In the waterproof cap, at the tip of the skirt portion, a large diameter portion having a relatively large diameter and a small diameter portion having a relatively small diameter are formed, and the projection of the slit in the extending direction of the main body portion is formed on the small diameter portion. It may overlap.

  According to the waterproof cap of this invention, while being able to improve workability, sufficient water stop performance can be ensured.

It is a perspective view of the waterproof cap which concerns on this Embodiment. It is the perspective view which looked at the waterproof cap shown in FIG. 1 from a different angle. It is a top view of the waterproof cap which concerns on this Embodiment. It is a side view of the waterproof cap which concerns on this Embodiment. It is a bottom view of the waterproof cap which concerns on this Embodiment. It is sectional drawing of the waterproof cap which follows the VI-VI line shown in FIG. It is the cross-sectional perspective view which looked at the waterproof cap shown in FIG. 6 from the other angle. It is the cross-sectional perspective view which looked at the waterproof cap shown in FIG. 6 from another angle. It is a perspective view which shows the state before inserting a coaxial cable in a waterproof cap. FIG. 10 is a partial cross-sectional view of the waterproof cap and the coaxial cable shown in FIG. 9. It is a fragmentary sectional view which shows the 1st state in inserting the coaxial cable in a waterproof cap. It is a fragmentary sectional view which shows the 2nd state in inserting the coaxial cable in a waterproof cap. It is a fragmentary sectional view which shows the 3rd state in inserting the coaxial cable in a waterproof cap. It is a perspective view which shows the state after inserting a coaxial cable in a waterproof cap. It is a perspective view which shows the state before attaching a waterproof cap to an example of outdoor equipment. It is a perspective view which shows the state after attaching a waterproof cap to an example of outdoor equipment. It is a fragmentary sectional view of an example of the outdoor equipment in the state where the waterproof cap was attached. It is a perspective view which shows the state before attaching a waterproof cap to the other example of outdoor equipment. It is a perspective view which shows the state after attaching the waterproof cap to the other example of outdoor equipment. It is a fragmentary sectional view of the other example of the outdoor equipment in the state where the waterproof cap was attached.

  Embodiments of the present invention will be described below with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  FIG. 1 is a perspective view of a waterproof cap 1 according to the present embodiment. FIG. 2 is a perspective view of the waterproof cap 1 shown in FIG. 1 as seen from a different angle. FIG. 3 is a plan view of the waterproof cap 1 according to the present embodiment. FIG. 4 is a side view of the waterproof cap 1 according to the present embodiment. FIG. 5 is a bottom view of the waterproof cap 1 according to the present embodiment. 6 is a cross-sectional view of the waterproof cap 1 taken along line VI-VI shown in FIG. FIG. 7 is a cross-sectional perspective view of the waterproof cap 1 shown in FIG. 6 viewed from another angle. FIG. 8 is a cross-sectional perspective view of the waterproof cap 1 shown in FIG. 6 as seen from another angle. With reference to FIGS. 1-8, the structure of the waterproof cap 1 of this Embodiment is demonstrated.

  The waterproof cap 1 is made of a material having a flexible material such as an elastic elastomer, and can be a rubber waterproof cap 1, for example. The waterproof cap 1 includes a main body 10. The main body 10 is formed in a substantially cylindrical shape having a constant inner diameter. The main body part 10 is provided with an engaging part 16, a positioning part 17, and a rib part 18. The engaging portion 16, the positioning portion 17, and the rib portion 18 have an annular shape that protrudes from the outer peripheral surface of the main body portion 10 to the radially outer side of the main body portion 10.

  As will be described later, when the waterproof cap 1 is attached to an outdoor device, the engaging portion 16 engages with the outdoor device, and the positioning portion 17 contacts the connection portion of the outdoor device. The positioning unit 17 sets the depth at which the waterproof cap 1 is fitted into the connection portion of the outdoor device. Thereby, the waterproof cap 1 is attached to the outdoor equipment at an appropriate position.

  The main body 10 has one end 12 that is an end on one side and the other end 14 that is an end on the other side. One end 12 of the main body 10 is open. The waterproof cap 1 is attached to an outdoor device at one end 12. The other end 14 of the main body 10 is closed by a wall 20.

  The wall 20 is attached to the other end 14 of the main body 10 inside the cylindrical main body 10. The wall part 20 has a disk-like planar shape. The wall portion 20 has a central portion 22 and a peripheral edge portion 24, and is joined to the other end 14 of the main body portion 10 at the peripheral edge portion 24. The wall 20 is continuously extended from the other end 14 of the main body 10 inside the main body 10. The wall portion 20 is formed within the range of the inner peripheral wall of the main body portion 10 at the other end 14.

  As shown in the sectional views of the waterproof cap 1 in FIGS. 6 to 8, the central portion 22 of the wall portion 20 protrudes toward the one end 12 side of the main body portion 10 with respect to the peripheral edge portion 24. The wall portion 20 is formed such that the thickness of the central portion 22 is smaller than the thickness of the peripheral edge portion 24.

  The wall portion 20 is formed with a slit 26 that penetrates the wall portion 20 in the thickness direction. The slit 26 is formed inside the inner periphery of the other end 14 of the main body 10. The slit 26 is formed in a shape in which a part of the wall portion 20 is missing at a position that passes through the center of the circle that is the planar shape of the wall portion 20 and reaches the vicinity of the peripheral edge portion of the circle. The slit 26 is formed in a straight line shape along the diameter of a circle that is a planar shape of the wall portion 20. By forming the slit 26, a cable connected to the outdoor device can pass through the wall portion 20 and be inserted into the waterproof cap 1. The slit 26 is formed in such a size that the coaxial cable in which the F plug has been assembled in advance can be inserted into the waterproof cap 1 from the side on which the F plug has been assembled. The number, shape, and dimensions of the slits 26 are not limited to the example of the present embodiment.

  In a state where an external force is not acting on the waterproof cap 1 before the coaxial cable is inserted into the waterproof cap 1, the wall portion 20 substantially closes the other end 14 of the cylindrical main body portion 10. After the coaxial cable is inserted into the waterproof cap 1, the wall portion 20 is elastically deformed by the coaxial cable being disposed in the slit 26. The wall 20 sandwiches the outer peripheral surface of the coaxial cable by the stress generated in the wall 20.

  Since the thickness of the center part 22 of the wall part 20 is smaller than the thickness of the peripheral part 24, the wall part 20 has a relatively small elastic modulus in the center part 22, and the center part 22 can be elastically deformed more easily. Therefore, the wall portion 20 can be deformed so as to be closer to, preferably in contact with, the outer peripheral surface of the coaxial cable that penetrates the wall portion 20. Since the gap generated between the wall portion 20 and the coaxial cable can be made smaller by the deformation of the wall portion 20, it is possible to suppress the water that has entered the waterproof cap 1 from flowing beyond the wall portion 20. The water stop performance can be improved.

  The waterproof cap 1 also includes a skirt portion 30. The skirt portion 30 is connected to the other end 14 of the main body portion 10 and extends in the extending direction of the main body portion 10. The skirt portion 30 is formed in a hollow cylindrical shape, and is arranged concentrically with the main body portion 10 and the wall portion 20. The skirt portion 30 has a distal end 32 that is an end portion on the side away from the other end 14 of the main body portion 10 and a distal end 34 that is an end portion on the side to be joined to the other end 14 of the main body portion 10. The skirt portion 30 is made of an elastic material. The skirt portion 30 is formed in a tapered shape that tapers from the end 34 toward the tip 32. The cross-sectional area of the skirt portion 30 in the cross section orthogonal to the extending direction of the waterproof cap 1 is maximum at the end 34 and gradually decreases toward the tip 32.

  As clearly shown in FIGS. 2 and 5, the skirt portion 30 has a corrugated shape 36 whose diameter changes relatively at the tip 32. A large-diameter portion 37 having a relatively large diameter and a small-diameter portion 38 having a relatively small diameter are formed at the tip 32 of the skirt portion 30. At the tip 32 of the skirt portion 30, the large-diameter portions 37 and the small-diameter portions 38 are alternately formed in the circumferential direction, so that a waveform shape 36 is formed. The corrugated shape 36 of the present embodiment includes two large diameter portions 37 and two small diameter portions 38. The numbers of the large diameter portion 37 and the small diameter portion 38 are not limited to this example, and the corrugated shape 36 may be formed by the large diameter portion 37 and the small diameter portion 38 having any number and shape.

  The diameter of the large diameter portion 37 may be equal to the diameter of the skirt portion 30 at the end 34. That is, the large diameter portion 37 may have a diameter substantially equal to that of the main body portion 10 of the waterproof cap 1. The diameter of the small diameter portion 38 is smaller than the diameter of the large diameter portion 37. The small diameter portion 38 may have a diameter that is equal to or slightly smaller than the outer diameter of the coaxial cable inserted through the waterproof cap 1. In this case, when the coaxial cable is inserted into the waterproof cap 1, the small diameter portion 38 comes close to or contacts the outer peripheral surface of the coaxial cable, and the opening area of the tip 32 of the skirt portion 30 can be reduced. Therefore, it is preferable because water can be prevented from entering the waterproof cap 1 via the tip 32.

  In FIG. 3, the waterproof cap 1 is viewed from above along the extending direction of the cylindrical main body portion 10, a wall portion 20 provided on the back side with respect to the internal space of the main body portion 10 is illustrated. The small-diameter portion 38 of the skirt portion 30 is shown through the slit 26 formed in the above. In FIG. 5, the waterproof cap 1 is viewed from below along the extending direction of the tubular main body portion 10. The corrugated shape 36 at the tip 32 of the skirt portion 30 and the inner space of the skirt portion 30 are provided on the back side. The wall 20 is shown.

  As apparent from FIGS. 3 and 5, the projection of the slit 26 in the extending direction of the main body portion 10 overlaps the small diameter portion 38. By adjusting the arrangement of the slit 26 and the skirt portion 30 in this way, the projected area of the slit 26 with respect to the opening of the tip 32 of the skirt portion 30 is reduced. Therefore, the moisture that has entered the internal space of the skirt portion 30 through the opening of the tip 32 of the skirt portion 30 is prevented from flowing through the slit 26 and further into the main body portion 10.

  The waterproof cap 1 can be manufactured by any known method, and may typically be manufactured by injection molding using a mold. When the waterproof cap 1 having a shape in which the main body portion 10 side and the skirt portion 30 side are partitioned by the wall portion 20 is manufactured by injection molding, the inner peripheral surface of the main body portion 10 and one surface of the wall portion 20 are formed. One mold must be released from the one end 12 side, and the second mold for forming the inner peripheral surface of the skirt portion 30 and the other surface of the wall portion 20 must be released from the tip 32 side. When the skirt portion 30 is formed into a tapered shape, it is difficult to release the second mold, but in the waterproof cap 1 of the present embodiment, the skirt portion 30 is formed of an elastic material, and the tip of the skirt portion 30 is formed. By providing the corrugated shape 36 to 32, the corrugated shape 36 is easily deformed when the mold is pulled out, so that the diameter of the tip 32 can be enlarged. Thereby, since easier mold release becomes possible, productivity can be improved.

  A procedure for assembling the coaxial cable 200 to the waterproof cap 1 having the above configuration will be described. FIG. 9 is a perspective view showing a state before the coaxial cable 200 is inserted through the waterproof cap 1. 10 is a partial cross-sectional view of the waterproof cap 1 and the coaxial cable 200 shown in FIG. 11 to 13 are partial cross-sectional views showing a state in which the coaxial cable 200 is being inserted through the waterproof cap 1. FIG. 14 is a perspective view showing a state after the coaxial cable 200 is inserted through the waterproof cap 1.

  A coaxial connector 204 is attached to the end of the coaxial cable 200. The coaxial connector 204 is an F-type connector (F plug). The core wire 202 of the coaxial cable 200 protrudes inside the coaxial connector 204. The coaxial connector 204 is fixed by a fixing ring 206. The fixing ring 206 is provided with a knob portion 208 for caulking with a tool when a part of the ring-shaped member is reduced in diameter and processed into the shape of the fixing ring 206. The main body 10 of the waterproof cap 1 is matched with the outer shape of the coaxial connector 204 attached to the coaxial cable 200 that penetrates the waterproof cap 1, and has an inner diameter larger than the maximum diameter of the coaxial connector 204.

  9 and 10, the coaxial connector 204 attached to the coaxial cable 200 is pressed against the waterproof cap 1 from the tip 32 side of the skirt portion 30 from the state where the coaxial cable 200 is not yet assembled to the waterproof cap 1. At this time, the tip 32 of the skirt portion 30 is elastically deformed radially outward, and the diameter of the coaxial connector 204 is increased so that the tip 32 can pass through. More specifically, the opening area of the tip 32 is increased so that the small-diameter portion 38 of the tip 32 of the skirt portion 30 is elastically deformed particularly greatly so that the coaxial connector 204 can pass through the tip 32.

  The coaxial connector 204 is larger in diameter than the coaxial cable 200. Therefore, after the coaxial connector 204 has completely passed through the tip 32, if the force by which the coaxial connector 204 pushes the tip 32 of the skirt portion 30 is removed, the tip 32 of the skirt portion 30 is deformed again radially inward. , Approach the original shape. Due to the deformation of the tip 32, the gap between the outer peripheral surface of the coaxial cable 200 and the skirt portion 30 at the tip 32 is reduced. Therefore, the rainwater splash is prevented from entering the waterproof cap 1 from the tip 32.

  When the coaxial cable 200 is further pushed into the waterproof cap 1, the coaxial connector 204 is subsequently pressed against the wall 20. At this time, the wall portion 20 is elastically deformed to increase the opening area of the slit 26. Due to the deformation of the wall portion 20, the coaxial connector 204 can pass through the slit 26 as shown in FIGS. 11 and 12. Since the wall portion 20 is formed in a tapered shape with the central portion 22 projecting toward the one end 12 side of the main body portion 10 with respect to the peripheral edge portion 24, when the coaxial connector 204 is pressed against the wall portion 20, the wall of the core wire 202 is Contact with the portion 20 can be suppressed, and deformation of the core wire 202 can be prevented.

  At this time, since the central portion 22 of the wall portion 20 protrudes toward the one end 12 side of the main body portion 10 with respect to the peripheral edge portion 24, when the coaxial connector 204 is pressed against the wall portion 20 from the skirt portion 30 side, the wall portion 20 is Then, the slit 26 is deformed in an expanding direction. As a result, the coaxial connector 204 can easily pass through the slit 26.

  Moreover, since the wall part 20 is formed so that the thickness of the center part 22 is smaller than the thickness of the peripheral part 24, the rigidity in the vicinity of the center part 22 is small. Therefore, when the coaxial connector 204 is pressed, the vicinity of the central portion 22 of the wall portion 20 can be greatly deformed. As a result, the opening area of the slit 26 can be easily increased, so that the coaxial connector 204 can easily pass through the slit 26. Further, as already described, since the central portion 22 of the wall portion 20 can be easily deformed, the wall portion 20 is close to the outer peripheral surface of the coaxial cable 200 passing through the slit 26, and the wall portion 20 and the coaxial cable are connected. Therefore, the water stop performance of the waterproof cap 1 can be improved.

  As shown in FIGS. 13 and 14, the coaxial cable 200 is inserted into the waterproof cap 1 until the coaxial connector 204 passes through the waterproof cap 1 and protrudes outward from one end 12 of the main body 10. At this time, as is apparent from the cross-sectional view of FIG. 13, the wall portion 20 is pushed up toward the insertion direction of the coaxial cable 200, that is, toward the one end 12 side of the main body portion 10. The waterproof cap 1 is held at an arbitrary position with respect to the longitudinal direction of the coaxial cable 200 by the urging force of the elastically deformed wall 20 sandwiching the coaxial cable 200.

  Next, a procedure for assembling the coaxial cable 200 inserted through the waterproof cap 1 shown in FIG. 14 to the outdoor device 100 will be described. FIG. 15 is a perspective view showing a state before the waterproof cap 1 is attached to an example of the outdoor device 100. FIG. 16 is a perspective view showing a state after the waterproof cap 1 is attached to an example of the outdoor device 100. FIG. 17 is a partial cross-sectional view of an example of the outdoor device 100 with the waterproof cap 1 attached. The outdoor device 100 shown in FIGS. 15 to 17 is a planar antenna, and an example in which the terminal 102 for attaching the coaxial cable 200 on the back surface side of the planar antenna is covered with the waterproof cap 1 will be described.

  When the coaxial cable 200 is assembled to the outdoor device 100, first, the coaxial connector 204 of the coaxial cable 200 in a state of passing through the waterproof cap 1 is attached to the terminal 102 of the outdoor device 100. For example, the coaxial connector 204 may be fixed to the terminal 102 with screws. At this time, the waterproof cap 1 is held at an arbitrary position in the longitudinal direction of the coaxial cable 200 by the elastic force of the wall portion 20, and unintentional movement of the waterproof cap 1 can be prevented without the operator holding the waterproof cap 1. Therefore, workability can be improved.

  After the coaxial connector 204 is attached to the outdoor device 100, the waterproof cap 1 is moved along the coaxial cable 200, and the main body 10 of the waterproof cap 1 is attached to the pedestal 104 that is a connection portion provided in the outdoor device 100. Fit. The waterproof cap 1 is attached to the outdoor device 100 at one end 12 to form a space for accommodating the terminal 102 of the outdoor device 100 and cover the terminal 102 of the outdoor device 100 as shown in FIG. In this way, the waterproof cap 1 is held on the base 104 of the outdoor device 100 and can cover the joint portion between the coaxial connector 204 and the terminal 102. Therefore, it is possible to prevent the rainwater from reaching the terminal 102 even under the worst conditions in which rainwater is blown up by strong wind and scattered upward in a typhoon or the like.

  The dotted line arrows shown in FIG. 17 indicate the flow of water that enters the waterproof cap 1 from the outside to the inside. That is, even if water enters the skirt portion 30 via the tip 32, the wall portion 20 suppresses the water entry into the main body portion 10, so that the water does not reach the terminal 102. Has been.

  The base 104 provided in the outdoor device 100 for fitting the waterproof cap 1 is formed with the same diameter as the outer diameter of the main body 10, and the length is formed in the main body 10. It is formed to be equivalent to the length from the portion 16 to the positioning portion 17. Thus, when the waterproof cap 1 is fitted into the pedestal 104, the engaging portion 16 engages with the pedestal 104, and the positioning portion 17 contacts the pedestal 104, whereby the waterproof cap 1 is positioned, and the waterproof cap 1 is for outdoor use. It is held without falling from the device 100.

  The main body 10 is formed in such a size that the terminal 102 of the outdoor device 100 and the coaxial connector 204 can be sufficiently accommodated in the internal space thereof. In the example shown in FIG. 17, both the terminal 102 and the coaxial connector 204 are accommodated in the internal space of the main body 10, but the present invention is not limited to this example. As long as a closed space is formed by the outdoor device 100 and the main body 10 of the waterproof cap 1 and the terminal 102 and the coaxial connector 204 can be accommodated in the closed space, the waterproof cap 1 can be used in any manner for outdoor use. It may be attached to the device 100.

  In the state shown in FIG. 13, the wall portion 20 that is curved toward the one end 12 side of the main body portion 10 moves the waterproof cap 1 along the longitudinal direction of the coaxial cable 200 for mounting the waterproof cap 1 on the outdoor device 100. By this, it slides with respect to the outer peripheral surface of the coaxial cable 200. Therefore, as shown in FIG. 17, the wall part 20 curves to the skirt part 30 side. At this time, since the coaxial cable 200 is sandwiched by the wall portion 20, it is possible to prevent the waterproof cap 1 from being displaced relative to the coaxial cable 200.

  FIG. 18 is a perspective view showing a state before the waterproof cap 1 is attached to another example of the outdoor device 110. FIG. 19 is a perspective view showing a state after the waterproof cap 1 is attached to another example of the outdoor device 110. FIG. 20 is a partial cross-sectional view of another example of the outdoor device 110 with the waterproof cap 1 attached. Another example of the outdoor device 110 may be a high-frequency device other than an antenna, such as an outdoor mixer or a home booster. Even when the terminal 112 of the outdoor device 110 of another example shown in FIGS. 18 to 20 is covered, the waterproof cap 1 is connected to the outdoor device 110 after the coaxial connector 204 is connected to the terminal 112 as in the above-described outdoor device 100. The joint portion between the coaxial connector 204 and the terminal 112 is covered with the waterproof cap 1. Thereby, it is possible to prevent rainwater from reaching the terminal 112.

  In the waterproof cap 1 of this Embodiment demonstrated above, the coaxial cable after attaching a coaxial connector can be penetrated from the coaxial connector side. For this reason, a coaxial cable having a coaxial connector attached in advance in a factory can be used, and the number of on-site work can be reduced, so that the workability can be improved. In addition, the waterproof cap 1 is provided with a skirt portion 30 in addition to the wall portion 20 provided in the conventional waterproof cap. Therefore, the entry of moisture into the skirt portion 30 is suppressed, and the entry of moisture into the main body portion 10 is further suppressed by the wall portion 20. Since the flow of water splash toward the terminal accommodated in the main body portion 10 is suppressed by a plurality of members of the skirt portion 30 and the wall portion 20, arrival of water splash on the terminal can be suppressed, so that the waterproof cap 1 can improve the water stop performance to stop the flow of water to the terminal.

  Since the water stop performance can be improved by the wall portion 20 and the skirt portion 30, it is not necessary to increase the extension length of the waterproof cap 1 in order to improve the water stop performance. Therefore, since the waterproof cap 1 can be shortened, the degree of freedom of arrangement of the coaxial cable penetrating the waterproof cap 1 can be improved, and the coaxial cable can be bent and arranged at the outlet of the waterproof cap 1 immediately. Even if the coaxial cable is bent, the waterproof cap 1 can secure sufficient water-stopping performance, so as to ensure water-stopping performance such as wrapping a covering material such as vinyl tape across the outer peripheral surface of the coaxial cable and the waterproof cap. Therefore, the workability can be further improved. By making the skirt part 30 into a tapered shape, the infiltration of rainwater into the skirt part 30 can be further suppressed, so that the water stop performance can be ensured more reliably.

  By making the wall part 20 into a shape in which the central part 22 protrudes toward the one end 12 side of the main body part 10, the coaxial cable can be easily passed through the slit 26, so that the workability can be further improved. By making the thickness of the central portion 22 smaller than the thickness of the peripheral portion 24 and making the central portion 22 easily elastically deformed, the coaxial cable can be passed through the slit 26 more easily and the wall portion 20 can be penetrated. The water stopping performance can be further improved by arranging the wall portion 20 surrounding the coaxial cable close to the coaxial cable.

  By making the tip 32 of the tapered skirt portion 30 corrugated, the tip 32 can be easily elastically deformed, the coaxial cable 200 can be easily inserted into the skirt portion 30 from the tip 32, and workability can be further improved. The projection of the slit 26 in the extending direction of the waterproof cap 1 is superimposed on the small diameter portion 38 of the tip 32 of the skirt 30, so that water that has entered the skirt 30 via the tip 32 passes through the slit 26. Since it can suppress flowing into the main-body part 10, a water stop performance can be improved further.

  Although the embodiment of the present invention has been described as above, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Waterproof cap, 10 main-body part, 12 one end, 14 other end, 20 wall part, 22 center part, 24 peripheral part, 26 slit, 30 skirt part, 32 tip, 34 terminal, 36 waveform shape, 37 large diameter part, 38 Small diameter part, 100, 110 Outdoor equipment, 102, 112 terminals, 200 coaxial cable, 204 coaxial connector.

Claims (4)

A waterproof cap that covers the terminal of an outdoor device,
A main body portion formed in a cylindrical shape having one end and the other end, the one end being open, and being attached to the outdoor device at the one end;
A wall having a plate-like shape that closes the other end, and a slit that penetrates in the thickness direction; and
A skirt connected to the other end and extending in the extending direction of the main body ,
The skirt portion is made of an elastic material, and is formed in a tapered shape toward a tip away from the other end.
Said skirt portion, in the front end, that having a waveform which relatively diameter changes, waterproof cap. The wall portion has a central portion and a peripheral portion, and is joined to the main body portion at the peripheral portion,
The waterproof cap according to claim 1, wherein the central portion protrudes toward the one end side with respect to the peripheral edge portion. The wall portion has a central portion and a peripheral portion, and is joined to the main body portion at the peripheral portion,
The waterproof cap according to claim 1 or 2 , wherein a thickness of the central portion is smaller than a thickness of the peripheral portion. A large diameter portion having a relatively large diameter and a small diameter portion having a relatively small diameter are formed at the tip,
Projection of the slit in the extending direction of the body portion, overlapping the small diameter portion, the waterproof cap according to claim 1.

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