JP4488044B2 - Packing for wiring equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a packing for a wiring apparatus used for a drip-proof plate that is attached to a construction surface such as an outer wall of a built structure and protects the wiring apparatus from water drops such as raindrops.

  2. Description of the Related Art Conventionally, when installing a wiring device on a construction surface such as an outer wall of a built structure, a drip-proof plate that protects the wiring device from water drops such as raindrops has been used.

  As shown in FIG. 8 (a), the drip-proof plate 1 includes a body 4 in which a device placement portion 3 on which a wiring device 2 is exposed is exposed on a part of the front surface, and a box with a rear opening. And a cover 5 attached to the front surface of the body 4 so as to be openable and closable between a closed position that covers the instrument placement section 3 and an open position that opens the instrument placement section 3. The body 4 is attached to the construction surface together with the wiring device 2. When the body 4 is attached to the construction surface, the back surface is opposed to the construction surface (see, for example, Patent Document 1).

  By the way, in this type of drip-proof plate 1, water may enter the protective space surrounded by the body 4 and the cover 5 from between the cover 5 and the body 4 at the closed position. In particular, in the drip-proof plate 1 described in Patent Document 1, the cover 5 is pivotally attached to the body 4 using a rotation shaft 33 disposed along the upper edge of the body 4, and the cover 5 is attached to the body 4. On the other hand, since a gap is formed between the upper end portion of the cover 5 in the closed position and the body 4 in order to be rotatable, water enters from the gap. Here, in order to prevent the infiltrated water from adhering to the charging unit (wiring device 2), the portion around the device placement unit 3 on the front surface of the body 4 and covered with the cover 5 is in a closed position. A flange portion 16 ′ protrudes along the peripheral wall of a certain cover 5.

  The flange portion 16 ′ surrounds the instrument placement portion 3 over the entire circumference, and water that has entered from between the cover 4 and the body 5 is blocked by the flange portion 16 ′ before reaching the instrument placement portion 3. The water blocked by the flange portion 16 ′ passes through the side of the device placement portion 3 and is discharged from the lower portion (drain hole 31) of the protective space to the outside of the protective space. As a result, the wiring device 2 arranged in the device placement unit 3 is protected from raindrops and the like.

  Here, as shown in FIG. 8 (b), a gap is formed between the front end portion of the flange portion 16 'and the back of the front wall of the cover 5, and one of the water blocked by the flange portion 16'. The part passes through this gap. However, since the water that has passed through the gap between the flange portion 16 ′ and the back surface of the front wall of the cover 5 flows along the back surface of the front wall of the cover 5, the instrument placement portion 3 is not usually wetted. However, when the water flowing through the gap between the flange portion 16 'and the cover 5 adheres to the back of the front wall of the cover 5, the cover 5 is caused by the impact of raindrops hitting the drip-proof plate 1 during heavy rain, for example. If it vibrates, the water adhering to the site | part facing the instrument arrangement | positioning part 3 among the back surface of the front wall of the cover 5 will scatter and water may splash on the wiring instrument 2 of the instrument arrangement | positioning part 3. FIG.

On the other hand, as shown in FIG. 9, a drip-proof plate in which a gap between the flange portion 16 ′ and the back of the front wall of the cover 5 is filled using a wiring device packing (hereinafter abbreviated as packing) P. 1 is considered (for example, see Patent Document 2). In the configuration described in Patent Document 2, a packing mounting groove 48 is formed in a portion where the front end surface of the flange portion 16 ′ is abutted on the back surface of the front wall of the cover 5, and the packing P is inserted into the packing mounting groove 48. The packing P is attached to the back of the front wall of the cover 5. As a result, in the state where the cover 5 is closed at the closed position, the front end surface of the flange portion 16 ′ abuts against the packing P, and the packing P is interposed between the flange portion 16 ′ and the back surface of the front wall of the cover 5. It will be.
JP 2000-31418A (page 5) Japanese Utility Model Publication No. 56-75485 (Fig. 3)

  However, in the configuration described in Patent Document 2, in order to ensure the water tightness of the instrument placement portion 3, the body 4 and the cover 5 are formed so that no gap is generated between the tip surface of the flange portion 16 ′ and the packing P. However, there is a problem that high accuracy is required for molding, and cost reduction is difficult. That is, if the accuracy of molding of the body 4 and the cover 5 is low and the size of the gap between the flange 16 'and the cover 5 varies, the gap cannot be reliably filled with the packing P, and the flange 16 There is a possibility that water may enter the instrument placement section 3 through a gap between the cover 5 and the cover 5. Further, even if the packing P has elasticity, the cover 5 in the closed position receives a force pushed back from the packing P due to the elasticity of the packing P. There is a problem that a gap is formed between the packing P and the gasket P.

  The present invention has been made in view of the above-described reasons, and it is for a wiring apparatus that can reliably fill a gap between a collar portion and a cover without requiring high accuracy in molding a body and a cover. The purpose is to provide packing.

  According to the first aspect of the present invention, there is provided a body having a device placement portion disposed on the front surface of the wiring device so that the front surface is exposed, a box-like back opening, and a closed position that opens the device placement portion and opens. And a cover that is attached to the front surface of the body so as to be openable and closable with respect to the open position, and at least above the device placement portion around the device placement portion on the front surface of the body and covered by the cover. , Packing for wiring apparatus made of an elastic material that is used for a drip-proof plate with a collar projecting along the peripheral wall of the cover in the closed position and is made of an elastic material that is attached to the collar and fills the gap between the collar and the peripheral wall of the cover Then, it has a packing body that is attached to the collar part long in the longitudinal direction of the collar part, and a projecting piece that projects over the entire length in the longitudinal direction of the packing body from the surface facing the peripheral wall of the cover in the packing body, Piece is projected obliquely to the surface facing the eaves portion of the peripheral wall of the cover in a closed position, the distal end portion on the peripheral wall of the cover in a closed position, characterized in that the elastic contact.

  According to this configuration, the projecting piece protrudes obliquely with respect to the surface of the peripheral wall of the cover at the closed position facing the flange, and the tip part elastically contacts the peripheral wall of the cover at the closed position. The tip of the projecting piece is pushed by the peripheral wall of the cover and is displaced toward the flange by the flexibility of the projecting piece. Therefore, the protruding piece can absorb the variation in the size of the gap between the collar portion and the peripheral wall of the cover, and can reliably fill the gap between the collar portion and the cover. As a result, it is possible to reliably prevent water from entering the instrument placement section through the gap between the collar and the cover, and to improve the waterproof performance of the instrument placement section.

  According to a second aspect of the present invention, in the first aspect of the present invention, the collar is formed above the instrument placement section, and the cover is above the collar on the front side of the body and Centering on a rotating shaft arranged behind the tip, the shaft is attached to the body so as to be rotatable between the closed position and the open position, and the protruding piece is more than the rotating shaft. It is mounted at a position closer to the front, and the distal end is positioned forward of the base end.

  According to this configuration, the projecting piece is mounted at a position closer to the front than the rotation shaft serving as the center of rotation of the cover, and the distal end portion is located forward of the base end portion. Therefore, when the cover is closed, Even if the peripheral wall elastically contacts the tip of the protruding piece and receives a reaction force from the protruding piece, the reaction force acts toward the rotating shaft, and the cover is rotated to the open position around the rotating shaft. Almost no effect on orientation. Therefore, it is possible to avoid a gap from being generated between the cover and the body due to the reaction force received by the cover from the protruding piece.

According to a third aspect of the present invention, in the first or second aspect of the present invention, an engagement protrusion that protrudes along the front surface of the body protrudes from the tip of the flange, and the packing body is A fitting groove in the rear opening into which the front end of the flange portion is fitted, and an engagement hole formed in a portion serving as a side wall of the fitting groove so as to communicate with the fitting groove and into which the engagement protrusion is inserted. The rear end surface of the engagement hole is locked to the rear end surface of the engagement protrusion.

  According to this configuration, the rear end surface of the engagement hole is locked to the rear end surface of the engagement protrusion by inserting the distal end portion of the flange into the insertion groove and inserting the engagement protrusion into the engagement hole. The forward movement of the packing main body is restricted, and the packing main body is prevented from being detached from the collar portion. Therefore, the packing body can be attached to the collar without using an adhesive or the like, and the assemblability can be improved.

  In the present invention, the projecting piece projects obliquely with respect to the surface of the peripheral wall of the cover in the closed position that faces the flange, and the tip end elastically contacts the peripheral wall of the cover in the closed position, so that the cover is closed in the closed position. And the front-end | tip part of a protrusion piece is pushed by the surrounding wall of a cover, and is displaced to the collar part side by the flexibility of a protrusion piece. In other words, even if there is a variation in the size of the gap between the buttock and the cover, the projecting piece can absorb the variation in the gap and reliably fill the gap between the buttock and the cover. The accuracy required for molding is lower than in the past.

  In the following embodiments, the upper, lower, left, and right of FIG.

(Embodiment 1)
Below, the basic composition of the drip-proof plate which uses the packing for wiring devices of this embodiment (henceforth abbreviated as packing) will be described first.

  As shown in FIG. 2, the drip-proof plate 1 has a body 4 in which a device arrangement portion 3 in which the wiring device 2 is arranged so as to expose the front surface is formed on a part of the front surface, and a box shape with a rear opening. Is attached to the front surface of the body 4 so as to be openable and closable between a closed position (see FIG. 3 (a)) covering the instrument placement section 3 and an open position (see FIG. 3 (b)) opening the instrument placement section 3. The cover 5 is provided. The body 4 is attached to the construction surface (outer wall or the like) together with the wiring device 2, and the back surface is opposed to the construction surface when attached to the construction surface.

  Here, the embedded wiring device 2 is used, and the device placement portion 3 of the body 4 has a shape corresponding to an embedding hole (not shown) formed in the construction surface for attaching the wiring device 2. An instrument window 6 is provided therethrough. The wiring device 2 is placed in the device placement section 3 in a state of being inserted into the device window 6. In this embodiment, an outlet is illustrated as the wiring device 2, and the wiring device 2 is disposed in the device placement unit 3 with a functional surface provided with a plug blade insertion opening into which the blade is inserted as a front surface. In normal times, the wiring device 2 is protected from water drops by positioning the cover 5 in the closed position, and when the wiring device 2 is used, the functional surface of the wiring device 2 is improved by positioning the cover 5 in the open position. Expose.

  The wiring device 2 is attached to a construction surface using an attachment plate 8 to which a decorative plate 7 is detachably attached. The mounting plate 8 holds the wiring device 2 and can be attached to the construction surface so as to cover the opening peripheral portion of the embedding hole provided on the construction surface, and is covered with the decorative plate 7 after being attached to the construction surface. Is called. The mounting plate 8 is a plate frame (not shown) that covers the opening peripheral portion of the embedding hole and is attached to the mounting plate (not shown) generally used when the wiring device is attached to the construction surface. ) Function. That is, the wiring device 2 employed in the present embodiment can be attached even using an attachment frame.

  The mounting plate 8 is provided with a long hole 9 for inserting a box screw (not shown) for attaching the mounting plate 8 to an embedding box (not shown) embedded in the construction surface, and the mounting plate 8. A screw insertion hole 10 is formed through which a screw (not shown) for direct attachment is inserted. Locking holes 11 into which locking protrusions (not shown) protruding from the back surface of the decorative plate 7 are inserted are provided at the four corners of the mounting plate 8. Two receiving pieces 12 arranged in the left-right direction protrude from the lower end edge of the mounting plate 8, and a cutout portion 13 is formed in a portion corresponding to each receiving piece 12 in the decorative plate 7. In a state where the decorative plate 7 is attached to the attachment plate 8, a jig (a tip of a minus driver or the like) is inserted between the receiving piece 12 and the notch 13 to widen the gap between the receiving piece 12 and the notch 13. By applying a force in this manner, the decorative plate 7 can be removed from the mounting plate 8.

  In the body 4, a fixing hole 14 having the same shape as the long hole 9 is formed at a position corresponding to the long hole 9, and a positioning protrusion 15 inserted into the screw insertion hole 10 protrudes at a position corresponding to the screw insertion hole 10. It is installed. As a result, the mounting plate 8 holding the wiring device 2 is disposed in the device placement portion 3, and the box screw is passed through both the long hole 9 of the mounting plate 8 and the fixing hole 14 of the body 4. Both 8 and the body 4 are attached to the construction surface (embedded box). That is, the body 4 is sandwiched between the mounting plate 8 and the construction surface while being attached to the construction surface. The decorative plate 7 is attached to the attachment plate 8 after the attachment plate 8 is attached to the construction surface together with the body 4.

  On the front surface of the body 4, as shown in FIG. 3 (b), a flange portion 16 is erected along the front surface of the body 4 so as to protrude from above the device placement portion 3 and cover the device placement portion 3. ing. The flange portion 16 is formed in a curved shape that protrudes upward, so that a gradient is provided on the upper surface so that both ends in the left-right direction (longitudinal direction) are lower than the center portion. Further, a drainage wall 17 is provided on the front surface of the body 4 so as to surround the instrument placement portion 3 together with the flange portion 16 over the entire circumference. Here, the drain wall 17 is formed so as to fit within the horizontal dimension of the flange 16. That is, the flange portion 16 is formed to have a dimension protruding in the left-right direction from the left and right end edges of the draining wall 17.

  A plurality of (three in this case) through holes 18 are formed in the left and right side walls of the drain wall 17, and a plurality of (two in this case) through holes 19 are formed in the lower wall of the drain wall 17. Yes. Each through-hole 19 in the lower wall is formed in each part corresponding to the notch 13 of the decorative plate 7, so that when the decorative plate 7 is removed from the mounting plate 8, the receiving piece is passed through the through-hole 19. The decorative plate 7 can be easily removed by inserting the jig (the tip of a minus driver or the like) between 12 and the notch 13.

  Here, on the outside of the drainage wall 17 on the front surface of the body 4, the water traveling along the front surface of the body 4 does not enter the instrument placement portion 3 surrounded by the drainage wall 17 through the through holes 18 and 19. At the positions corresponding to the through holes 18 and 19, projecting pieces 20 and 21 having a projecting dimension smaller than that of the draining wall 17 are erected. On the opposite side of each projection piece 20 on the front surface of the body 4 from the instrument placement portion 3, a guide portion 46, which will be described later, extends downward from the left and right end portions of the flange portion 16. The draining ribs 22 each having a smaller projecting dimension are erected. The draining rib 22 is extended in the vertical direction along the left and right side walls of the draining wall 17. In addition, a pair of bearing bases 23 to be described later are provided so as to protrude in the left-right direction above the flange portion 16 on the front surface of the body 4.

  A frame-like back surface packing 24 surrounding the instrument window 6 of the body 4 is interposed between the body 4 and the construction surface, as shown in FIG. Water is prevented from flowing to the wiring device 2 through the through hole. Here, mounting holes (not shown) are formed on the back surface of the body 4 at positions corresponding to the through holes 18 and 19 and at positions corresponding to the bearing base 23, respectively. Are attached to the body 4 by inserting the attachment protrusions 25 into the attachment holes. At the time of construction, the back surface packing 24 is sandwiched between the body 4 and the construction surface by attaching the body 4 to the construction surface with the back surface packing 24 attached to the body 4.

  The back surface packing 24 is formed by integrally connecting an inner packing 26 (see FIG. 1A) surrounding the instrument window 6 and an outer packing 27 surrounding the inner packing 26 by a connecting portion 28. By double enclosing the window 6 with the inner packing 26 and the outer packing 27, water can be reliably prevented from entering the instrument window 6. Note that two cutouts 29 are provided at the lower end portion of the outer packing 27, and even if water may enter between the inner packing 26 and the outer packing 27 beyond the outer packing 27, Is drained out of the outer packing 27 through the notch 29.

  Further, a rear surface rib 30 is provided on the rear surface of the body 4 so as to protrude from the entire circumference and make the front end abut the construction surface, and the rear surface packing 24 is disposed at a portion surrounded by the rear surface rib 30. Here, fin portions that protrude rearward from the back rib 30 are formed in the back packing 24 at the portions that become the inner packing 26 and the outer packing 27, and the drip-proof plate 1 is attached to the construction surface. Then, the fin portion is bent and the back surface packing 24 is brought into elastic contact with the construction surface, so that the watertightness between the back surface of the body 4 and the construction surface is ensured.

  As shown in FIG. 4, a drain hole 31 penetrating in the front-rear direction is formed at the lower end of the body 4. The lower end edge of the drain hole 31 is located at the same height as the upper surface of the lower wall of the cover 5 in the closed position. The drain hole 31 is formed at a position on the outer side of the back surface packing 24, that is, on the outer side of the outer packing 27. Further, a drain hole 32 penetrating in the vertical direction is formed in the lower portion of the back rib 30. In the example of FIG. 2, the drainage holes 31 are formed at the left and right ends of the body 4 respectively, whereas the drainage holes 32 are formed at the center in the left-right direction of the body 4. The holes 32 may also be formed at the left and right ends of the body 4, respectively. However, in the configuration in which the drainage hole 32 is located directly below the drainage hole 31, the water that has entered the space surrounded by the back rib 30 through the drainage hole 32 enters the front side of the body 4 through the drainage hole 31. Since there is a possibility, it is desirable to adopt the configuration of FIG.

  On the other hand, the cover 5 has an outer peripheral shape that is substantially equal to the body 4 in a front view, and is attached to the front surface of the body 4 so as to cover the flange 16 and the draining wall 17 on the front surface of the body 4 at the closed position. Here, with the cover 5 closed at the closed position, the size of the gap between the flange portion 16 of the body 4 and the peripheral wall (upper wall) of the cover 5 is substantially constant in the longitudinal direction (left-right direction) of the flange portion 16. As shown in FIG. 3 (a), the cover 5 has a contact base 44 formed in a curved shape whose bottom surface is convex upward like the top surface of the flange portion 16 as shown in FIG. Yes. Thereby, the collar part 16 provided in the body 4 becomes the shape protruded along the surrounding wall (upper wall) of the cover 5 in a closed position.

  Here, the cover 5 is pivotally attached to the body 4 by a rotating shaft 33 disposed along the upper end edge of the body 4. As described above, the rotary shaft 33 is supported by the body 4 by being inserted into the bearing base 23 protruding above the flange portion 16, and is inserted into the bearing portion 34 provided at the upper end portion of the cover 5. As a result, the cover 5 is rotatable with respect to the body 4 between the closed position in FIG. 3A and the open position in FIG. The bearing stand 23 positioned above the flange portion 16 is set so that the protruding dimension from the front surface of the body 4 is smaller than that of the flange portion 16, and therefore the rotating shaft 33 held by the bearing stand 23 is shown in FIG. ) And above the flange 16 and behind the tip of the flange 16.

  Here, as shown in FIG. 1A, a recess 35 is provided between the pair of bearing bases 23 on the front surface of the body 4, and the front surface of the recess 35 is provided in the recess 35. A sliding plate 36 for covering and a leaf spring 37 for biasing the sliding plate 36 forward are housed.

  The cover 5 has an upper end surface that is inclined as a first inclined surface 38 such that the vertical dimension of the cover 5 becomes smaller toward the front end side except for the rear end portion. In addition, a sliding protrusion 39 is provided on the rear end portion of the cover 5 corresponding to the sliding plate 36 so as to protrude rearward so that the front end portion abuts against the sliding plate 36 in the closed position. The upper surface of the protrusion 39 is inclined as the second inclined surface 40 so that the vertical dimension becomes smaller toward the tip side.

  Thus, when the cover 5 is in the closed position, the tip end portion of the sliding projection 39 is urged forward by the sliding plate 36, and the cover 5 is urged counterclockwise in FIG. Here, when the cover 5 is rotated toward the open position, the tip of the sliding projection 39 slides with respect to the sliding plate 36, and the tip of the sliding projection 39 is moved from the center of the rotating shaft 33. At the time when the cover 5 moves downward, the tip of the sliding protrusion 39 is urged forward, whereby the cover 5 is urged clockwise in FIG. Then, when the sliding plate 36 gets over the corner between the first inclined surface 38 and the second inclined surface 40 and the first inclined surface 38 and the sliding plate 36 become parallel, as shown in FIG. The cover 5 is held in the open position.

  By the way, in the drip-proof plate 1 configured as described above, a gap is formed between the upper end portion of the cover 5 and the body 4 at the closed position so that the cover 5 can be rotated with respect to the body 4. It is conceivable that water enters the protective space surrounded by the cover 5 and the body 4 from this gap. Therefore, by adopting the following configuration in the protection space, water that has entered from the gap between the cover 5 and the body 4 is prevented from adhering to the charging unit (wiring device 2).

  That is, the hook 16 is erected above the instrument placement part 3 on the front surface of the body 4 as described above, and the water that has entered from between the upper end of the cover 5 and the body 4 by the hook 16. Will be blocked. The water blocked by the collar part 16 flows to both right and left ends of the collar part 16 due to the gradient applied to the upper surface of the collar part 16. The water that has reached each end of the flange portion 16 flows to the lower wall of the cover 5 through the side of the instrument placement portion 3 surrounded by the drainage wall 17. The water that has flowed to the lower wall of the cover 5 is drained to the back side of the body 4 through the drain hole 31 and further drained to the outside of the space surrounded by the back rib 30 through the drain hole 32.

  Thus, the water blocked by the flange 16 passes through the side of the instrument placement unit 3 surrounded by the drain wall 17 and is discharged from the lower part of the protective space to the outside of the protective space. As a result, the wiring device 2 arranged in the device placement unit 3 is protected from raindrops and the like.

  The packing P of the present embodiment is used for the drip-proof plate 1 having the above-described configuration, and is made of an elastic material having elasticity (for example, synthetic rubber). The packing P is attached to the flange 16 of the body 4 and is attached to the flange 16. And the gap between the cover 5 at the closed position. Specifically, the packing P fills the gap between the flange portion 16 and the upper wall of the cover 5 (here, the abutment table 44 at the lower portion of the upper wall) except for the left and right ends of the flange portion 16 as shown in FIG. Thus, it extends along the longitudinal direction of the flange 16.

  The packing P has an elongated shape that is long in the longitudinal direction of the flange portion 16 as shown in FIG. 2 or 3 and is attached to the flange portion 16, and the cover 5 of the packing body 41 as shown in FIG. It has a projecting piece 43 projecting over the entire length in the longitudinal direction of the packing body 41 from the surface facing the peripheral wall (here, the contact table 44).

  As shown in FIG. 1B, the packing body 41 is formed in a U-shaped cross section by forming the insertion groove 42 of the back opening over the entire length in the longitudinal direction, and the tip of the flange portion 16 is the insertion groove. It is attached to the collar part 16 in the form of being fitted into 42. Here, the packing body 41 is bonded to the flange 16 using an adhesive or the like so as to prevent the packing P from coming off from the flange 16 and falling off. In the example of FIG. 1A, the flange portion 16 is formed with a step 16 a on the top surface that makes the thickness dimension on the distal end side smaller than the proximal end side, and the packing P has a step 16 a with respect to the flange portion 16. It is mounted at a position closer to the tip side.

  The protruding piece 43 protrudes obliquely with respect to the surface (here, the lower surface of the abutment base 44) facing the flange 16 on the peripheral wall of the cover 5 in the closed position. As shown in FIG. 1, it projects upward and obliquely forward from the rear end portion (opening side of the fitting groove 42) of the packing body 41. The inclination angle of the projecting piece 43 with respect to the lower surface of the contact table 44 and the projecting dimension of the projecting piece 43 are set such that the tip of the projecting piece 43 is elastically contacted with the peripheral wall (contact table 44) of the cover 5 at the closed position. The With the shape described above, the protruding piece 43 has flexibility that allows the tip portion to be displaced in the vertical direction. The amount of displacement at the tip of the protruding piece 43 increases as the thickness of the protruding piece 43 decreases, and increases as the protruding dimension of the protruding piece 43 increases.

  When the cover 5 is closed to the closed position, the tip of the protruding piece 43 of the packing P is brought into elastic contact with the peripheral wall (contact table 44) of the cover 5, and the tip of the protruding piece 43 is in contact with the peripheral wall of the cover 5. It is pushed and displaced to the flange 16 side (downward) by the flexibility of the protruding piece 43.

  According to this configuration, even if there is a variation in the size of the gap between the flange portion 16 and the peripheral wall (contact table 44) of the cover 5, the protruding piece 43 absorbs the variation in the gap, and the flange portion 16 And the peripheral wall of the cover 5 (contact table 44) can be reliably filled. In particular, even if the gaps vary greatly, if the amount of displacement of the tip of the protruding piece 43 is increased by increasing the protruding dimension of the protruding piece 43, the protruding piece 43 and the flange 16 A gap with the peripheral wall of the cover 5 can be reliably filled. Therefore, by using the packing P of the present embodiment, the accuracy required for molding the body 4 and the cover 5 is lower than that of the conventional one while ensuring the watertightness between the flange portion 16 and the cover 5. .

  As described above, the gap between the upper surface of the flange portion 16 and the lower surface of the upper wall of the cover 5 is closed by the protruding piece 43 of the packing P, so that the packing P, the upper surface of the flange portion 16, the front surface of the body 4, and the cover 5. A water passage 45 serving as a water passage is formed in a portion surrounded by the lower surface of the upper wall.

  As a result, the water blocked by the collar part 16 flows to the left and right ends of the collar part 16 through the water passage 45. Since the packing P is not provided at both end portions of the flange portion 16, the water that has flowed to the left and right end portions of the flange portion 16 flows to the side of the instrument placement portion 3 through the gap between the flange portion 16 and the cover 5. Therefore, water does not flow to the part of the cover 5 facing the instrument placement unit 3. In short, since water does not adhere to the portion of the cover 5 facing the instrument placement portion 3, even if the cover 5 vibrates due to the impact of raindrops on the drip-proof plate 1 during heavy rain, for example, Water is not applied to the wiring device 2 arranged in the device placement unit 3.

  In the drip-proof plate 1, the left and right end portions of the flange portion 16 are the inner side surfaces of the left and right side walls of the cover 5 so that water passing through the water passage 45 is transmitted to the inner side surfaces of the left and right side walls of the cover 5. The gap is set to a size that allows water droplets to pass through in contact with both the flange 16 and the inner surface of the cover 5. Furthermore, the guide part 46 extended downward each along the inner surface of each right and left side wall of the cover 5 from the left and right end parts of the collar part 16 is provided, whereby the collar part 16 passes through the water passage 45. The water that has reached the left and right end portions of the water flows downward along the guide portion 46, so that the water easily reaches the inner surface of the side wall of the cover 5. When the water passing through the water passage 45 flows along the side wall of the cover 5, it is possible to prevent the water from falling from the flange portion 16, so that the water dropped from the flange portion 16 rebounds on the upper surface of the lower wall of the cover 5. It is possible to prevent the device 2 or the cover 5 from adhering to a portion facing the device placement portion 3.

  By the way, as another configuration example of the packing P of the present embodiment, for example, as shown in FIG. 5, the shape of the protruding piece 43 is different from that of the packing P of FIG. The packing P in FIG. 5 (a) is such that the protruding piece 43 protrudes obliquely upward from the front end portion (bottom side of the fitting groove 42) of the packing body 41, and the packing P in FIG. The protruding piece 43 protrudes obliquely upward and rearward from the rear end portion (opening side of the fitting groove 42) of the packing body 41. Even when these packings P are used for the above-described drip-proof plate 1, when the cover 5 is closed to the closed position, the tip of the protruding piece 43 is pushed by the peripheral wall of the cover 5, and the flexibility of the protruding piece 43 causes wrinkles. By displacing to the part 16 side (downward), the gap between the flange part 16 and the cover 5 can be filled reliably.

  However, considering the reaction force that the cover 5 receives from the protruding piece 43 when the cover 5 is closed at the closed position, the packing P having the configuration shown in FIG. 1 is more preferable than the configuration shown in FIG. That is, the reaction force received from the protruding piece 43 in a state where the peripheral wall of the cover 5 is in elastic contact with the protruding piece 43 acts in a direction in which the protruding piece 43 tries to return to the original shape. In the configuration in which the distal end portion is positioned rearward of the base end portion, it acts on the upper front side (upper left in FIG. 5). That is, the reaction force acts in the direction in which the cover 5 is rotated in the clockwise direction in FIG. 5 around the rotation shaft 33, thereby biasing the cover 5 toward the open position, and There may be a gap between the front surface of the body 4. On the other hand, in the configuration in which the distal end portion of the projecting piece 43 is positioned forward of the base end portion as shown in FIG. 1, the reaction force received by the peripheral wall of the cover 5 from the projecting piece 43 is diagonally upward (see FIG. a) to the upper right). That is, the reaction force acts toward the rotation shaft 33 and hardly acts in the direction in which the cover 5 is rotated around the rotation shaft 33. Therefore, according to the configuration shown in FIG. 1, there is an advantage that a gap is hardly generated between the rear end surface of the peripheral wall of the cover 5 and the front surface of the body 4.

  As still another configuration example of the packing P of the present embodiment, a configuration in which the shape of the packing body 41 is different from the packing P of FIG. In the packing P of FIG. 6, the packing main body 41 is formed in an L-shaped cross section having a main piece 41 a that contacts the upper surface of the flange portion 16 and a hanging piece 41 b that contacts the front end surface (front end surface) of the flange portion 16. It is a thing. The protruding piece 43 protrudes obliquely upward and forward from the rear end portion of the main piece 41a. As shown in FIG. 6B, a positioning piece 41c that protrudes backward from the hanging piece 41b is formed at the center of the packing body 41 in the longitudinal direction. A notch (not shown) into which the positioning piece 41c is inserted is formed at the front end of the center portion in the longitudinal direction of the flange portion 16, and the packing P with respect to the flange portion 16 is inserted into the notch by inserting the positioning piece 41c into the notch. Positioning is done. In addition, two draining ribs 41d are erected on the upper surface of the main piece 41a over the entire length in the longitudinal direction. Thereby, for example, even if water adhering to the periphery of the packing P when the cover 5 is opened enters the main piece 41a, the water is blocked by the draining rib 41d and applied to the upper surface of the flange portion 16. The instrument arrangement part 3 is not wetted because it flows sideways in the left-right direction due to the existing gradient. The protruding height of the draining rib 41 d is set smaller than the protruding piece 43.

(Embodiment 2)
The packing P of the present embodiment is different from the packing P of the first embodiment in the structure for attaching the drip-proof plate 1 to the flange 16 as shown in FIG.

  In the drip-proof plate 1 using the packing P of the present embodiment, as shown in FIG. 7A, a plurality (four in this case) of engaging protrusions 16b projecting downward are provided at the front end portion of the flange portion 16, respectively. It has been. The plurality of engaging protrusions 16 b are arranged at equal intervals in the longitudinal direction of the flange portion 16.

  The packing main body 41 is an engagement in which the engagement protrusions 16b are inserted into the respective portions corresponding to the engagement protrusions 16b when the distal end portion of the flange portion 16 is inserted into the insertion groove 42 in the insertion groove 42. A hole 47 is provided. The engagement hole 47 passes through a portion of the packing body 41 that becomes the lower wall of the fitting groove 42. Here, the distance from the bottom surface of the fitting groove 42 to the rear end surface of the engagement hole 47 is set so that the rear end surface of the engagement hole 47 is locked to the rear end surface of the engagement protrusion 16b. The distance from the (front end surface) to the rear end surface of the engaging protrusion 16b is set slightly smaller. When the packing P is mounted, the elasticity of the packing P is used to slightly widen the dimension of the engagement hole 47 in the front-rear direction, and the rear end surface of the engagement hole 47 is hooked on the rear end surface of the engagement protrusion 16b. The packing P is locked to the engaging protrusion 16b.

  According to the configuration described above, in a state in which the packing P is attached to the flange portion 16, the bottom surface of the fitting groove 41 of the packing body 41 abuts on the front end surface of the flange portion 16, so that the packing body 41 moves backward. In addition to being prohibited, the forward end of the packing body 41 is prohibited by the rear end surface of the engagement hole 47 being locked to the rear end surface of the engagement protrusion 16b, so that the packing P is detached from the flange portion 16. A stop will be made. Accordingly, the packing P can be attached to the flange portion 16 without using an adhesive or the like, and the assemblability of the drip-proof plate 16 can be improved. Other configurations and functions are the same as those of the first embodiment.

  By the way, in each said embodiment, although the example which provided the collar part 16 only above the instrument arrangement | positioning part 3 was shown, the collar part 16 is formed above the instrument arrangement | positioning part 3 at least among the circumference | surroundings of the instrument arrangement | positioning part 3. FIG. What is necessary is just to be formed, for example like the collar part 16 'demonstrated in the column of background art, may be formed over the perimeter of the instrument arrangement | positioning part 3. FIG. In this case, the packing P may be mounted over the entire length of the flange portion 16 ′ (that is, the entire circumference of the instrument placement portion 3), but at least above the instrument placement portion 3 of the flange portion 16 ′. It may be attached only to a part including the same.

  In each of the above embodiments, the outlet is exemplified as the wiring device 2 that uses the drip-proof plate 1, but the drip-proof plate 1 can also be used for other wiring devices 2, for example, the wiring device 2 is a switch. May be. In this case, the cover 5 is normally positioned at the closed position, and when the switch is operated, the cover 5 is positioned at the open position to expose the switch handle which is a functional surface of the switch. Moreover, although each embodiment showed the example which arrange | positions the wiring appliance 2 in the direction which becomes horizontally long with respect to the appliance arrangement | positioning part 3, you may arrange | position the wiring appliance 2 in the direction which becomes vertically long.

The structure of Embodiment 1 of this invention is shown, (a) is sectional drawing of the principal part, (b) is a side view of packing. It is an exploded perspective view same as the above. (A) It is a perspective view which shows the state which closed the cover same as the above, (b) It is a perspective view which shows the state which opened the cover same as the above. It is a front view same as the above. It is a side view which shows the other structural example same as the above. The other example of a structure same as the above is shown, (a) is sectional drawing of the principal part, (b) is a side view of packing. The structure of Embodiment 2 of this invention is shown, (a) is a perspective view of the state which removed the packing, (b) is a perspective view of the state which mounted | wore the packing. A conventional example is shown, (a) is a perspective view, (b) is a partially broken perspective view. It is sectional drawing which shows another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drip-proof plate 2 Wiring apparatus 3 Apparatus arrangement | positioning part 4 Body 5 Cover 16 ridge part 16b Engagement protrusion 33 Rotating shaft 41 Packing body 42 Insertion groove 43 Projection piece 47 Engagement hole P (for wiring apparatus) packing

Claims (3)

  Between a body having a device placement portion arranged to expose the front surface of the wiring device in a part of the front surface, and a closed position that covers the device placement portion in a box shape of the rear opening and an open position that opens A cover attached to the front surface of the body so as to be openable and closable, and the cover in the closed position is located at least above the instrument placement portion around the instrument placement portion on the front surface of the body and covered by the cover. It is used for a drip-proof plate having a collar projecting along a peripheral wall, and is a packing for a wiring apparatus made of an elastic material that is attached to the collar and fills a gap between the collar and the peripheral wall of the cover. A packing body that is long in the longitudinal direction and is attached to the flange, and a projecting piece that projects over the entire length in the longitudinal direction of the packing body from the surface facing the cover peripheral wall in the packing body, Protrudes obliquely to the surface facing the eaves portion of the peripheral wall of a cover, packing wiring instrument tip peripheral wall of the cover in a closed position, characterized in that the elastic contact.   The collar part is formed above the instrument arrangement part, and the cover is located above the collar part on the front side of the body and centered on a rotation axis disposed behind the tip part of the collar part, It is pivotally attached to the body so as to be rotatable between the closed position and the open position, the protruding piece is mounted at a position closer to the front than the rotating shaft, and the distal end portion is a proximal end portion The packing for wiring apparatus according to claim 1, wherein the packing is located further forward. An engagement protrusion that protrudes along the front surface of the body protrudes from the front end portion of the flange portion, and the packing body includes an insertion groove in a rear opening into which the front end portion of the flange portion is inserted, An engagement hole into which the engagement protrusion is inserted is formed in a portion serving as a side wall of the groove so as to communicate with the insertion groove, and the rear end surface of the engagement hole is locked to the rear end surface of the engagement protrusion. The packing for a wiring apparatus according to claim 1 or 2, wherein the packing is used.

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