JP4674166B2 - Waterproof structure of receiver - Google Patents

Description

  The present invention relates to a receiver configured by housing a receiver main body in a housing, and more particularly to a waterproof structure of a receiver for preventing rainwater and the like from entering the receiver.

  In response to the rapid increase in the amount of information distribution due to the expansion of the Internet in recent years, FTTH (Fiber To The Home), which is a data communication service for homes using optical fibers, is rapidly spreading to ordinary homes. In this FTTH, an optical fiber is connected to an optical receiver installed on an outdoor wall surface of a general house or the like. Then, the communication data relayed through this optical receiver is transmitted to each device such as a personal computer or a TV in the home.

  Thus, in order to ensure long-term reliability for optical receivers installed outdoors, it is possible to construct a waterproof structure for preventing rainwater and the like from entering the optical receiver. Become important. For this reason, conventionally, the optical receiver is provided with a waterproof structure. For example, Japanese Patent Application Laid-Open No. 2004-363361 discloses an optical receiver having a waterproof structure. Specifically, the optical receiver is configured by accommodating a photoelectric conversion unit and a storage tray inside an optical fiber storage case. The optical fiber storage case is configured by rotatably supporting a cover on the case, and a waterproof wall is formed on the side wall of the case so as to contact the side wall of the cover when the cover is closed. A water shielding wall that substantially covers the lower surface of the side wall of the cover is formed at the lower end of the side wall of the case (see Patent Document 1).

JP 2004-363361 A

  However, such a conventional waterproof structure has been constructed mainly for waterproofing in a range corresponding to the side wall of the cover, so there is room for improvement with respect to waterproof performance at the upper and lower ends of the cover. For example, the waterproof wall is effective for preventing rainwater from entering between the side wall of the cover and the side wall of the base. However, the waterproof wall is formed only on the portion that contacts the side wall of the cover. There was a possibility that water could enter the casing from a portion other than the side wall. Further, although the water shielding wall is effective for preventing rainwater from entering the space between the side wall of the cover and the side wall of the base, the water shielding wall is temporarily provided between the side wall of the cover and the side wall of the base. When rainwater entered, there was a possibility that the drainage was blocked by the impermeable wall.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a waterproof structure for a receiver that can more reliably prevent intrusion of rainwater or the like into the receiver.

  In order to solve the above-described problems and achieve the object, the present invention according to claim 1 is a waterproof structure of a receiver configured by housing a receiver main body inside a casing, The body includes a base that receives the receiver main body, and a cover that is rotatable with respect to the base around a support portion, and at least one of the base and the cover has a side wall that rises toward the other. A waterproof wall is provided on at least the other of the base and the cover so as to substantially contact an end surface of the side wall in the rising direction, and the end of the waterproof wall extends to the side of the support portion. A waterproof reinforcement wall is provided.

  According to a second aspect of the present invention, in the first aspect of the present invention, the base is provided with the side wall rising toward the cover, and the side wall is provided with the waterproof wall, And a support piece that protrudes upward. The side wall rises toward the base. The side wall is provided with the support piece of the base. A support piece constituting the portion is provided, and the waterproof reinforcement wall can be substantially brought into contact with the support piece of the cover.

  According to a third aspect of the present invention, in the present invention according to the second aspect, the waterproof reinforcement wall includes a first step portion that substantially contacts the side surface of the support piece of the cover, and the first step. And a second step portion that substantially contacts the inner surface of the support piece of the cover when the cover is open.

  Further, the present invention according to claim 4 is characterized in that, in the present invention according to any one of claims 1 to 3, the waterproof reinforcing wall is extended to an upper surface of the support portion. To do.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the side wall is provided so as to overlap each other on the base and the cover, and between the side walls. Is provided with a drainage channel extending up and down along the side wall, and a water-impervious wall extending below the drainage channel is provided at the lower end of the side wall located outside the side wall, and inside the side wall. The lower end of the side wall located is formed with a notch for draining water guided downward through the drainage channel to the outside of the housing, bypassing the impermeable wall. And

  Further, in the present invention described in claim 6, in the present invention described in claim 5, the side wall of the base can be polymerized inside the side wall of the cover, and at the lower end of the side wall of the cover, The water blocking wall is provided, and the notch is formed at the lower end of the side wall of the base.

  Further, the present invention according to claim 7 is the present invention according to claim 6, wherein the rising height of the lower portion of the side wall located inside the side wall is set to be higher than the rising height other than the lower portion. It is characterized by being raised.

  According to the present invention, since the waterproof reinforcement wall extending to the side of the support portion is provided, the support portion can be made unexposed to the back side, and rainwater can be prevented from entering the gap. The waterproof performance can be improved.

  Further, according to the present invention, the second step portion of the waterproof reinforcing wall is formed one step lower than the first step portion, and the second step portion is substantially in contact with the inner surface of the support piece. The gap between the support pieces can be closed by the two step portions, and the waterproof reinforcement wall does not become an obstacle, and the cover can be opened smoothly.

  In addition, according to the present invention, the waterproof reinforcing wall extends to the upper surface of the support portion, so that rainwater can be prevented from entering the periphery of the support portion from the upper side, and the waterproof performance of the receiver can be further improved. Can do.

  Further, according to the present invention, since the notch for draining the water guided downward through the drainage channel to the outside of the casing by bypassing the impermeable wall is formed, the casing is formed from the lower end of the drainage channel. Rainwater can be reliably drained outside the body, and the waterproof performance of the receiver can be improved.

  In addition, according to the present invention, since the rising height of the lower portion of the side wall located inside the side wall is higher than the rising height other than the lower portion, rainwater has entered the notch portion from below. Even in this case, it is possible to prevent this rainwater from getting over the side wall and reaching the housing space of the housing.

  Hereinafter, embodiments of a waterproof structure of a receiver according to the present invention will be described in detail with reference to the accompanying drawings. First, [I] the basic concept common to each embodiment was explained, then [II] the specific contents of each embodiment were explained, and [III] finally, a modification to each embodiment was explained. To do. However, the present invention is not limited by these embodiments.

[I] Basic concept common to the embodiments First, the basic concept common to the embodiments will be described. Each embodiment generally relates to a waterproof structure of a receiver. Here, the purpose of use, installation location, or specific configuration related to the receiver is arbitrary unless otherwise specified. For example, in addition to the above-described outdoor optical receiver, the disaster prevention signal is wired or wireless. Applicable receivers. Hereinafter, an optical receiver will be described as an example.

  The optical receiver according to each embodiment includes a waterproof structure for obtaining high waterproof performance in a wide range from the upper end to the lower end on the side of the receiver. Schematically, the optical receiver includes a base that receives the receiver body, and a cover that is rotatable about the support with respect to the base, and at least one of the base and the cover. Has a side wall that rises toward the other side. A waterproof structure is provided around the side wall to prevent intrusion of rainwater or the like from the side wall. More specifically, a waterproof wall that contacts the end face of the side wall is formed, and in particular, a waterproof reinforcement wall that extends to the side of the support portion is provided at the end of the waterproof wall. That is, the conventional optical receiver focuses only on the waterproofing around the side wall, and since the waterproof structure is not formed on the side of the support part, rainwater or the like can enter from the periphery of the support part. There was sex. On the other hand, the optical receiver according to each embodiment extends the waterproof structure to the periphery of the support portion by forming a waterproof reinforcing wall on the side of the support portion. Can prevent the intrusion of rainwater and the like from the surrounding area, and can improve the waterproof performance of the optical receiver. Further, in the conventional optical receiver, the drainage performance when rainwater that has entered between the side wall of the base and the side wall of the cover is drained downward is reduced by the water shielding wall provided at the lower end of the side wall of the cover. There was a possibility. In contrast, the optical receiver according to each embodiment improves the waterproof performance by improving the drainage performance of the drainage channel. In each embodiment, various measures are taken to improve the waterproof performance using the drainage channel.

[II] Specific Contents of Each Embodiment The specific contents of each embodiment will be sequentially described in detail below with reference to the accompanying drawings.

[Embodiment 1]
First, specific contents of the first embodiment according to the present invention will be described in detail. The first embodiment is a form in which a waterproof reinforcing piece is formed on the base constituting the casing of the receiver, and a notch is provided below the side wall of the base.

(Basic configuration of optical receiver)
First, the basic configuration of the optical receiver will be described. FIG. 1 is an overall perspective view of the optical receiver according to the first embodiment. In the following description, the X direction in FIG. 1 is the left-right direction, the Y direction in FIG. 1 is the up-down direction, the Z direction in FIG. 2 is the front-rear direction, the front side is the front, and the rear side is the back. The optical receiver 1 relays various signals and corresponds to the receiver in the claims. The optical receiver 1 is configured such that an optical fiber tray 40 and a photoelectric conversion unit 50 as a receiver main body are detachably housed inside a housing 10.

  Among these, the housing | casing 10 is a structure of the optical receiver 1, and is a protection means which protects the optical fiber tray 40 and the photoelectric conversion unit 50 from the outside. The housing 10 includes a base 20 and a cover 30 that substantially covers the front surface and the top, bottom, left, and right surfaces of the base 20 and is rotatably supported by the base 20 via a support portion 60. It is configured. A pair of lead-in ports 11 are formed on the bottom surface of the case 10, and an optical cable (not shown) can be drawn into the case 10 through the lead-in port 11, or from the inside of the case 10. The optical cable can be pulled out. Further, a connection terminal (not shown) of the photoelectric conversion unit 50 is exposed to the outside of the housing 10 on the bottom surface of the housing 10, and a coaxial cable can be connected to the connection terminal.

  The optical fiber tray 40 is a storage means for organizing and storing optical fibers, and is detachably stored in the housing 10. This optical fiber tray 40 has a cable fixing part 41 for fixing an optical fiber, a splice fixing part 42 for fixing a mechanical splice, and an extra length processing part 43 for processing the extra length of the optical fiber. It is configured to prepare for. Then, the optical cable is fixed to the cable fixing portion 41, the optical fiber drawn from the optical cable is introduced into the surplus length processing portion 43, and the surplus length portion is wound and accommodated in the surplus length processing portion 43. A mechanical splice (not shown) that connects the optical cables to each other can be detachably fixed to the splice fixing portion 42.

  The photoelectric conversion unit 50 is a photoelectric conversion unit that converts an optical signal into an electric signal. The photoelectric conversion unit 50 is formed in a substantially rectangular parallelepiped shape, and converts an optical signal into an electric signal by a photoelectric conversion circuit (not shown) provided therein.

  In such a configuration, an optical signal transmitted through the optical cable drawn from the lead-in port 11 is converted into an electric signal by the photoelectric conversion unit 50 and output to the outside through a coaxial cable (not shown). Alternatively, an optical signal transmitted through the optical cable drawn from the drawing port 11 is relayed to another optical cable, and this optical cable is drawn from the drawing port 11 and connected to an external device.

(Basic configuration of base 20)
Next, the basic configuration of the base 20 will be described. 2A and 2B are views showing a base, wherein FIG. 2A is a front view, FIG. 2B is a side view, FIG. 2C is a cross-sectional view taken along line A-A in FIG. Is a bottom view. 3 is a perspective view of the base viewed from the front side, FIG. 4 is a perspective view of the base viewed from the back side, and FIG. 5 is an enlarged side view of the base. The base 20 is configured integrally with a bottom plate 21 and side walls 22 to 25 that rise from the four circumferences of the bottom plate toward the front side (the cover 30 side). It is formed in a square box shape. Then, the optical fiber tray 40 and the photoelectric conversion unit 50 of FIG. 1 can be detachably accommodated inside the base 20 from the open front.

  A support piece 26 that integrally extends upward is formed at the upper part of the left and right side walls 24 and 25 of the base 20, and the support piece 26 is integrally provided with a rotating shaft 26 a that protrudes left and right. Is formed. The rotating shaft 26 a forms a support portion 60 together with a bearing hole 36 a (described later) of the cover 30, and rotatably supports the cover 30 on the base 20. In addition, in the vicinity of the rotation shaft 26 a in the support piece 26, an angle adjustment protrusion 26 b that protrudes to the left and right sides is integrally formed. The angle adjustment protrusion 26b is in contact with the inner surface of a support piece, which will be described later, of the cover 30. By pressing the support piece from the inside, a resistance force is generated when the cover 30 is opened and closed, and the cover 30 is moved to an arbitrary position. The opening / closing angle of the cover 30 can be adjusted.

(Basic configuration of cover 30)
Next, the basic configuration of the cover 30 will be described. 6A and 6B are views showing the cover 30, in which FIG. 6A is a front view, FIG. 6B is a side view, FIG. 6C is a rear view, FIG. 6D is a top view, and FIG. The cover 30 is configured integrally with a front plate 31 and side walls 33 to 35 that rise from the upper surface and the left and right side surfaces of the front plate 31 toward the back side (base 20 side). Is formed in a hollow rectangular box shape having an open shape. The cover 30 is formed in a slightly larger shape than the base 20 so that the base 20 can be substantially covered from the outside. In such a state where the base 20 is covered with the cover 30, the side wall 33 of the cover 30 is formed. Is located above and outside the base side wall 22, and the side walls 34 and 35 of the cover 30 are located on the left and right outside of the side walls 24 and 25 of the base 20. A space is formed, and the optical fiber tray 40 and the photoelectric conversion unit 50 can be accommodated in the accommodation space. A support piece 36 that extends integrally upward is formed on the left and right side walls 34, 35 of the cover 30, and a bearing hole 36 a is formed in the support piece 36. The bearing hole 36a is a through hole, and the cover 30 is rotatably attached to the base 20 by receiving the rotating shaft 26a of the base 20 in a rotatable manner.

(Basic structure of waterproof structure)
Next, a basic configuration of the waterproof structure of the housing 10 constituted by the base 20 and the cover 30 will be described. As shown in FIG. 5, the base 20 is formed with three waterproof walls 27a to 27c. The frontmost waterproof wall 27a is formed so as to surround the upper, lower, left and right side walls 22-25 of the base 20, and is integrally formed so as to protrude outward from the side walls 22-25. In the closed state, it substantially contacts the upper surface of the cover 30 and the inner surfaces of the left and right side walls 33 to 35. The waterproof wall 27b on the center side is formed on the left and right side walls 24, 25 of the base 20, and is integrally formed so as to protrude outward from the side walls 24, 25. With the cover 30 closed, The cover 30 substantially contacts the inner surfaces of the left and right side walls 34 and 35. Further, the waterproof wall 27c on the rearmost side corresponds to the waterproof wall in the claims. The waterproof wall 27c is formed on the left and right side walls 24, 25 of the base 20, and is integrally formed so as to protrude outward from the side walls 24, 25. In a state where the cover 30 is closed, the waterproof wall 27 c substantially abuts on the rear side end surfaces of the left and right side walls 34, 35 of the cover 30. Therefore, the gap between the base 20 and the cover 30 can be substantially blocked by the waterproof walls 27a to 27c, and rainwater or the like can be prevented from entering the inside of the housing 10 from the gap.

  By forming the plurality of waterproof walls 27 a to 27 c in this manner, a drainage channel 70 is formed between the base 20 and the cover 30. That is, in the space surrounded by the base 20 and the cover 30, the drainage between the waterproof wall 27a and the waterproof wall 27b and between the waterproof wall 27b and the waterproof wall 27c extends from above to below. A path 70 is formed. Rainwater that has entered between the side walls 24, 25 of the base 20 and the side walls 34, 35 of the cover 30 for some reason is guided downward by the drainage channel 70, thereby entering the inside of the housing 10. Is prevented.

  As shown in FIG. 6E, a water shielding wall 37 protruding toward the bottom surface of the base 20 is provided at the lower ends of the left and right side walls 34 and 35 of the cover 30. The impermeable wall 37 is formed integrally with the side walls 34 and 35, and the drainage channel 70 is substantially covered from below to be unexposed, thereby preventing rainwater from entering the drainage channel 70 from below. is doing.

(Reinforcement structure of waterproof structure)
Next, a reinforcing structure for improving the waterproof performance of the waterproof structure will be described. This reinforcing structure is roughly divided into a reinforcing structure in the upper part of the drainage channel 70 and a reinforcing structure in the lower part of the drainage channel 70. In addition, since these reinforcement structures are comprised substantially symmetrically in the right and left of the optical receiver 1, only the right side is demonstrated below. First, the reinforcing structure in the upper part will be described. As shown in FIG. 5, a waterproof reinforcing wall 28 is formed at the upper end of the waterproof wall 27c formed on the backmost side. The waterproof reinforcing wall 28 is formed integrally with the waterproof wall 27 c and is formed so as to reach substantially the side of the rotating shaft 26 a of the base 20.

  7 is an enlarged side view of the periphery of the support portion with the cover closed, FIG. 8 is an enlarged side view of the periphery of the support portion with the cover half open, and FIG. 9 is a view of the periphery of the support portion with the cover fully opened. It is an enlarged side view. As shown in FIG. 7, the waterproof reinforcing wall 28 is formed as an inclined piece along the end face on the back surface side of the support piece 36 of the cover 30, and is substantially over substantially the entire end face when the cover 30 is closed. It is in contact. In this state, the waterproof reinforcing wall 28 is configured such that the gap between the support piece 36 and the support piece 26 of the base 20 (that is, the gap of the support portion 60) is not exposed at least on the back side. Prevents rainwater from entering.

  Here, when the cover 30 is opened as shown in FIGS. 8 and 9, a part of the support piece 36 of the cover 30 that rotates with the cover 30 may interfere with the waterproof reinforcement wall 28. In order to avoid this interference, the waterproof reinforcement wall 28 has a first step portion 28 a and a second step portion 28 b formed in a range that can interfere with the support piece 36 of the cover 30. Yes. The first step portion 28a is raised at a height that substantially contacts the side surface of the support piece 36, while the second step portion 28b has a height lower than that of the first step portion 28a. It is starting up. 8 and 9, when the cover 30 is opened, the second step portion 28b substantially contacts the inner surface of the support piece 36 of the cover 30. Accordingly, the second step portion 28b can substantially close the gap on the inner surface side of the support piece 36 of the cover 30 to improve the waterproof performance, and the presence of the second step portion 28b does not become an obstacle. The cover 30 can be opened smoothly.

  Next, the reinforcement structure in the lower part of the drainage channel 70 will be described. FIG. 10 is a perspective view showing the lower structure of the drainage channel, and FIG. 11 is a perspective view showing the lower structure of the drainage channel of the conventional optical receiver. As shown in FIG. 11, in the conventional optical receiver 100, the lower end surface of the side wall 102 of the base 101 is simply formed in a plane, and a cover 103 (shown by an imaginary line) is provided over substantially the entire lower end surface. ) Of the impermeable wall 104. For this reason, there is a possibility that drainage of rainwater guided downward through the space between the base 101 and the cover 103 is hindered by the impermeable wall 104.

  On the other hand, in the optical receiver 1 according to the first embodiment, as shown in FIG. A second drainage channel is formed for bypassing and draining outside the housing 10. Specifically, a notch 24a is formed at the lower end of the side wall 24 of the base 20 by notching at least a part thereof. By forming the notch 24a in this way, the side wall 24 is formed. A space that communicates with the lower end of the drainage channel 70 is formed between the lower end of the drainage wall and the water shielding wall 37 of the cover 30. And this space part functions as a 2nd drainage channel, and drains rainwater led down via drainage channel 70 to the exterior of case 10 surely via this 2nd drainage channel. Can do. Therefore, it is possible to prevent a situation in which rainwater whose drainage is hindered by the impermeable wall 37 gets over the side wall 24 and enters the inside of the housing 10.

  In addition, when the second drainage channel is formed in this manner, drainage is improved, but rainwater may enter the housing 10 through the second drainage channel. Here, as shown in FIG. 11, in the conventional optical receiver 100, the front side of the side wall 102 of the base 101 is simply formed in a plane, and the front side of the side wall 102 and the cover 103 are not connected to each other. A space portion 105 was formed in. Therefore, when such a conventional structure is applied to the first embodiment as it is, when rainwater enters the notch 24a of FIG. 10 from below, the rainwater reaches the front side of the side wall 24, and this There was a possibility of getting over the side wall 24 and entering the housing space of the housing 10.

  In order to prevent such intrusion of rainwater, in the optical receiver 1 according to the first embodiment, as shown in FIG. 10, the rising height of the lower part of the side wall 24 of the base 20 is set to other than the lower part. It is higher than the startup height. Specifically, on the side wall 24, a rising portion 24b is formed at a location located in the vicinity of the notch portion 24a. The rising portion 24b is formed by integrally projecting the side wall 24 of the base 20 to the front side (the cover 30 side), and the rising height of the side wall 24 can be increased by the rising portion 24b. . Therefore, even if rainwater enters the second drainage channel from below, the rainwater is blocked by the rising portion 24b and can be prevented from getting over the side wall 24 and reaching the housing space of the housing 10. The waterproof performance of the housing 10 can be improved. Here, the rising portion 24 b is formed only at the lower portion of the side wall 24, but the rising portion 24 b may be formed at another portion of the side wall 24.

(Effect of Embodiment 1)
As described above, according to the first embodiment, by forming the waterproof reinforcement wall 28, the support portion 60 is at least unexposed to the back surface side, and rainwater can be prevented from entering from the support portion 60. Further, since the second step portion 28b of the waterproof reinforcement wall 28 is formed one step lower than the first step portion 28a, the waterproof reinforcement wall 28 does not become an obstacle and the cover 30 can be opened smoothly. . Further, by forming the cutout portion 24a, rainwater can be reliably drained from the lower end of the drainage channel 70 to the outside of the housing 10. Furthermore, since the rising height is made higher than other parts by forming the rising part 24b at the lower part of the base 20, even when rainwater enters the second drainage channel from below, This rain water can be prevented from getting over the side wall 24 and reaching the housing space of the housing 10.

[Embodiment 2]
Next, the specific content of Embodiment 2 which concerns on this invention is demonstrated in detail. In the second embodiment, the waterproof reinforcing wall is extended to the upper surface of the support portion. However, unless otherwise specified, the configuration is the same as that of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals as those used in the first embodiment, if necessary. To do.

  FIG. 12 is an enlarged side view of the periphery of the support portion when the cover is closed in the optical receiver according to Embodiment 2, and FIG. 13 is an enlarged side view of the periphery of the support portion when the cover is completely opened. A housing 80 of the optical receiver 2 according to the second embodiment includes a base 90 and a cover 30 that substantially covers the base 90. Three waterproof walls 27a to 27c are formed on the left and right side walls 91 of the base 90 as in the first embodiment. Here, a waterproof reinforcing wall 92 is formed at the upper end of the waterproof wall 27c on the rearmost side. The waterproof reinforcement wall 92 is formed by extending the waterproof wall 27c integrally upward, and includes the first step portion 28a and the second step portion 28b of the waterproof reinforcement wall 28 of the first embodiment. Each includes a first step portion 92a and a second step portion 92b configured similarly, and further includes a bending portion 92c.

  The curved portion 92c is formed integrally with the first step portion 92a and the second step portion 92b, and is formed in a curved shape substantially corresponding to the outer shape of the corner portion 36b of the support piece 36 of the cover 30. Thus, it extends above the support portion 60. Accordingly, it is possible to prevent rainwater from entering the periphery of the support portion 60 from above, and the waterproof performance of the optical receiver 2 can be further improved.

  Further, the second step portion 92b and the bending portion 92c are raised at a height lower than that of the first step portion 92a. When the cover 30 is opened as shown in FIG. 92 c substantially contacts the inner surface of the support piece 36 of the cover 30. Accordingly, the second step portion 92b and the bending portion 92c can substantially close the gap on the inner surface side of the support piece 36 of the cover 30 to improve the waterproof performance, and the second step portion 92b and the bending portion 92c can be improved. The cover 30 can be opened smoothly without the presence being an obstacle.

(Effect of Embodiment 2)
As described above, according to the second embodiment, the waterproof reinforcement wall 92 is extended above the support portion 60, so that rainwater can be prevented from entering the periphery of the support portion 60 from above, and the optical receiver 2. The waterproof performance can be further improved. In addition, the second step portion 92b and the curved portion 92c of the waterproof reinforcing wall 92 can substantially close the gap on the inner surface side of the support piece 36 of the cover 30 to improve the waterproof performance, and the second step portion 92b. Further, the cover 30 can be opened smoothly without the presence of the curved portion 92c becoming an obstacle.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention may be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved. For example, even when rainwater intrusion into the housing space of the housing cannot be completely prevented by 100%, the subject matter of the present invention is achieved when the waterproof performance can be improved even slightly. .

(About the basic structure of the housing)
Various basic structures other than those shown in the embodiments can be adopted as the basic structure of the housing, and the present invention can be similarly applied to such different structures. For example, in each embodiment, the side wall of the base and the side wall of the cover are overlapped with each other, but either one of the side walls may be omitted. For example, the base may be composed of only the bottom plate and the side wall thereof may be omitted, a waterproof wall may be formed on the periphery of the bottom plate, and the side wall of the cover may be brought into contact with the side surface or the front surface of the waterproof wall. Even in this case, the waterproof performance can be improved by extending the waterproof reinforcing wall to the side of the support portion. In each embodiment, the side wall of the cover is polymerized outside the side wall of the base, but the side wall of the cover may be polymerized inside the side wall of the base. In this case, while forming a water-impervious wall at the lower end of the side wall of the base, the second drainage channel may be formed by providing a notch at the lower end of the side wall of the cover. Further, the support portion may be provided below the base and the cover. In this case, the waterproof reinforcement wall may be provided at the lower end of the waterproof wall.

(Specific methods for forming waterproof reinforcement pieces and rising parts)
In each embodiment, the case where the waterproof reinforcing piece and the rising portion are integrally formed with the base has been described. However, the waterproof reinforcing piece and the rising portion may be formed separately from the base and attached to the base by known means. For example, the waterproof reinforcing piece may be formed of hard rubber and bonded to the base.

  The present invention can be applied to various receivers including an optical receiver for outdoor use, and is useful for improving the waterproof performance of the receiver.

1 is an overall perspective view of an optical receiver according to a first embodiment. It is a figure which shows a base, (a) is a front view, (b) is a side view, (c) is AA arrow sectional drawing of (a), (d) is a top view, (e) is a bottom view. It is. It is the perspective view of the base seen from the front side. It is the perspective view of the base seen from the back side. It is an enlarged side view of a base. It is a figure which shows a cover, (a) is a front view, (b) is a side view, (c) is a rear view, (d) is a top view, (e) is a bottom view. It is an enlarged side view of the support part periphery in the state which closed the cover. FIG. 6 is an enlarged side view of the periphery of a support portion in a state where a cover is half open. FIG. 6 is an enlarged side view of the periphery of the support portion in a state where the cover is completely opened. It is a perspective view which shows the lower part structure of a drainage channel. It is a perspective view which shows the lower part structure of the drainage channel of the conventional optical receiver. In the optical receiver which concerns on Embodiment 2, it is an expanded side view of a support part periphery in the state which closed the cover. It is an enlarged side surface of the support part periphery in the state which opened the cover completely.

Explanation of symbols

1, 2, 100 Optical receiver 10 Case 11 Retracting port 20, 90, 101 Base 21 Bottom plate 22-25, 33-35, 91, 102 Side wall 24a Notch 26, 36 Support piece 26a Rotating shaft 26b Angle adjustment protrusion 27a to 27c Waterproof wall 28, 92 Waterproof reinforcement wall 28a, 92a First step portion 28b, 92b Second step portion 29 Notch portion 30, 103 Cover 31 Top plate 36a Bearing hole 36b Corner portion 37, 104 Water shielding wall 40 Optical fiber tray 41 Cable fixing part 42 Splice fixing part 43 Extra length processing part 50 Photoelectric conversion unit 60 Supporting part 70 Drainage path 92c Bending part 105 Space part

Claims (7)

It is a waterproof structure of a receiver configured by housing the receiver main body inside a housing,
The housing includes a base that receives the receiver body, and a cover that is rotatable with respect to the base around a support portion,
At least one of the base and the cover is provided with a side wall that rises toward the other,
At least the other of the base and the cover is provided with a waterproof wall that substantially contacts the end surface of the side wall in the rising direction,
An end of the waterproof wall is provided with a waterproof reinforcement wall extending to the side of the support part,
The waterproof structure of receiver. The base is provided with the side wall that rises toward the cover, and the side wall is provided with the waterproof wall and a support piece that constitutes the support portion and protrudes upward.
The cover is provided with the side wall rising toward the base, and the side wall is provided with a support piece that constitutes the support portion together with the support piece of the base,
The waterproof reinforcement wall can be substantially in contact with the support piece of the cover,
The waterproof structure for a receiver according to claim 1. The waterproof reinforcement wall is formed with a first step portion that substantially contacts the side surface of the support piece of the cover, and lower than the first step portion, and the cover is opened in the state in which the cover is open. A second step portion that substantially contacts the inner surface of the support piece of the cover,
The waterproof structure for a receiver according to claim 2. Extending the waterproof reinforcement wall to the upper surface of the support part;
The waterproof structure for a receiver according to any one of claims 1 to 3. The side wall is provided so as to be superposed on each of the base and the cover, and a drainage channel extending vertically along the side wall is provided between the side walls,
Provided at the lower end of the side wall located outside of the side wall is a water shielding wall extending below the drainage channel,
The lower end of the side wall located on the inner side of the side wall has a notch for draining water guided downward through the drainage channel to the outside of the housing, bypassing the impermeable wall. That formed,
The waterproof structure for a receiver according to claim 1 . Allowing the side wall of the base to be polymerized inside the side wall of the cover;
The water shielding wall is provided at the lower end of the side wall of the cover,
Forming the notch at the lower end of the side wall of the base;
The waterproof structure for a receiver according to claim 5. The rising height of the lower part of the side wall located inside the side wall is set higher than the rising height other than the lower part,
The waterproof structure for a receiver according to claim 6.

Images