Installation in a wall hole

Abstract

To provide an installation body to a wall hole which can be installed in the wall hole in a stable state.SOLUTION: The installation body 1 includes a wall back side abutting part 18 inserted from the wall front side into a wall hole 31 formed in the wall 30 and arranged at a position capable of abutting on a wall back side peripheral edge 33 of the wall hole 31, a wall front side abutting part 14 abutted on a wall front side peripheral edge 32 of the wall hole 31, and a screw 17 for relatively bringing the wall front side abutting part 14 and the wall back side abutting part 18 close to each other to sandwich the wall 30 at the peripheral edge of the wall hole 31 from the front and back sides. Further, a piercing part 20 capable of piercing the wall surface side peripheral edge 32 of the wall hole 31 from the wall surface side by pressing is projected from the wall surface abutting part 14 to the wall back abutting part 18 side. Thus, since the piercing part 20 pierces the wall surface side peripheral edge 32 of the wall hole 31, the installation body 1 is prevented from being positionally dislocated in the peripheral direction to the wall 30, and is installed in the wall hole 31 in a stable state.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to an installation body for a wall hole that is installed in a wall hole to mount wiring devices such as switches and outlets on a wall. [Background technology]

[0002] Patent Document 1, for example, discloses a wiring box, which is an installation body used to attach wiring devices such as switches and outlets to walls made of plywood or gypsum board. The wiring box of Patent Document 1 includes a cylindrical peripheral wall that houses wiring devices and a substantially rectangular flange on the front surface of the peripheral wall, which are integrally formed. A clamping piece is threadedly attached to the tip of a screw inserted into a screw mounting hole in the flange. The clamping piece is located on the back side of the wall and threads toward the flange by turning the screw. The flange abuts the front side of the wall, and the clamping piece on the back side of the wall threads forward, clamping the wall between the flange and the clamping piece, thereby installing the wiring box in a wall hole. This wiring box can be installed in a wall hole stably, even on soft walls such as plywood or gypsum board, without damaging the wall, thanks to the clamping between the flange and the clamping piece. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 09-182246 Summary of the Invention [Problem to be solved by the invention]

[0004] However, because conventional wiring boxes clamp the wall surface with the flange and clamping pieces and prevent rotation by frictional sliding resistance, clamping alone can cause the flange and clamping pieces to slide against the wall surface, resulting in rotation within the wall hole and making it difficult to achieve a stable installation. As a result, there is a risk that the circumferential orientation of the wiring box and wiring device relative to the wall hole will change when plugging or unplugging the wiring device from the outlet, and there is also a risk that the cables connected to the wiring device inside the peripheral wall will twist or even break.

[0005] Therefore, an object of the present invention is to provide an installation body for a wall hole that can be stably installed in a wall hole. [Means for solving the problem]

[0006] The installation body in the wall hole of claim 1 is a wall back abutment portion that is inserted into a wall hole formed in the wall from the front side of the wall and is positioned so as to be able to abut against a peripheral edge of the wall back side of the wall hole; a wall surface abutment portion that abuts against the peripheral edge of the wall surface of the wall hole; a clamping operation unit that brings the wall front contact portion and the wall back contact portion relatively close to each other to clamp the peripheral wall of the wall hole from the front and back; The wall hole has a piercing portion that protrudes from the wall front contact portion toward the wall back contact portion and can be pierced from the wall front side into the periphery of the wall hole when pressed.

[0007] In the installation body for a wall hole of claim 2, the piercing part is located on the side of the wall hole where the wall abutment part is located. Here, the side where the wall abutment part is located includes not only the location where the wall abutment part is located but also the surrounding area. As a result, the piercing portion pierces the side supported by the wall back abutment portion from the front, so that a stable piercing state can be maintained.

[0008] In the installation body for a wall hole of claim 3, particularly, at least a portion of the wall surface abutment portion and the wall back abutment portion face each other across the wall, and the piercing portion protrudes from the corresponding wall surface abutment portion within the range in which it abuts the wall of the wall back abutment portion. This allows the piercing portion to pierce within the range of the area supported by the wall back abutment portion, and allows the piercing portion to maintain a more stable piercing state.

[0009] The installation body for a wall hole of claim 4, in particular, has a plurality of wall-back abutment portions scattered about and abutting against the back of the wall, and at least two piercing portions are provided, each of which pierces within the range of abutment against the wall of the wall-back abutment portion. This allows the effect of the piercing portion maintaining the piercing state to be obtained at multiple positions, thereby further enhancing the effect.

[0010] The installation body for a wall hole of claim 5 has the entire piercing portion pierced into the wall, thereby restricting relative movement with respect to the wall hole even when the wall is not clamped from the front or back, and preventing the piercing portion from coming out due to the installation body's own weight. [Effects of the Invention]

[0011] The present invention provides a piercing portion that protrudes from the wall-front contact portion toward the wall-back contact portion. When pressed, the piercing portion pierces the periphery of the wall hole from the wall front side, so the installation body is fixed in a fixed position relative to the wall and can be stably installed in the wall hole. As a result, during installation, the installation body can be temporarily fastened to the wall hole and the periphery of the wall hole can be clamped between the wall-front contact portion and the wall-back contact portion, making installation easy. After installation, the installation body can be reliably prevented from rotating circumferentially relative to the wall hole and becoming misaligned. This reliably prevents the circumferential orientation of the installation body or wiring device relative to the wall hole from changing when inserting or removing a plug into or from a wiring device outlet, and prevents the cable connected to the wiring device inside the installation body from twisting or breaking. [Brief explanation of the drawings]

[0012] [Figure 1] 1A and 1B show an installation body for a wall hole according to an embodiment of the present invention, in which FIG. 1A is a perspective view seen from the back side, and FIG. 1B is a perspective view seen from the front side. [Figure 2] 2A and 2B show the installation body of FIG. 1, where (a) is a side view and (b) is a cross-sectional view taken along the AA cutting line of FIG. 1A. [Figure 3] 2A and 2B show a state in which the wall back contact portion of the installation body of FIG. 1 is raised, where FIG. 2A is a perspective view seen from the back side, and FIG. 2B is a perspective view seen from the front side. [Figure 4] 4 shows the installation body in the state of FIG. 3, where (a) is a side view and (b) is a cross-sectional view taken along the line BB in FIG. 3(a). [Figure 5] 2A and 2B show a state in which the wall back contact portion of the installation body of FIG. 1 is screwed toward the wall front side, where FIG. 2A is a perspective view seen from the back side and FIG. 2B is a perspective view seen from the front side. [Figure 6] FIG. 6 is a side view showing the installation body in the state of FIG. 5. [Figure 7] 5(a) is a perspective view showing the state when the installation body of FIG. 1 is installed in the wall hole, and FIG. 5(b) is a cross-sectional view taken along the CC cutting line of FIG. 5(a) showing the installation body after installation. [Figure 8] 2 is a side view showing a state in which the installation body of FIG. 1 is installed in a wall hole and a wiring device is attached. [Figure 9] 2 is a perspective view showing the state in which the installation body of FIG. 1 is installed in a wall hole and a sensor is attached. FIG. [Figure 10] 2(a) is a perspective view of a downlight to be attached to a wall hole, and FIG. 2(b) is a cross-sectional view showing the state in which the installation body of FIG. 1 is installed and the downlight is attached. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The installation body is installed in a wall hole formed in a ceiling wall or an interior wall of a building to attach a sensor, wiring device, etc. In this embodiment, the wall is made of gypsum board, and the wall hole is shown as a single circular through hole. In this embodiment, the up-down direction means the up-down direction in Figure 1.

[0014] 1 and 2, the installation body 1 is integrally formed with a cylindrical peripheral wall 10, a bottom wall 11 formed at one end of the peripheral wall 10, an opening 12 formed at the other end of the peripheral wall 10 opposite the bottom wall 11, and a circular plate-shaped flange portion 13 protruding horizontally from the periphery of the opening 12, perpendicular to the peripheral wall 10. The installation body 1 is integrally formed from a synthetic resin material or the like. Here, the flange portion 13 constitutes a wall surface abutment portion 14 that abuts against the wall surface-side peripheral edge 32 of the wall hole 31 when the installation body 1 is installed in the wall hole 31. A cable outlet hole 15 through which a cable 50 can be inserted is formed in the bottom wall 11 by punching or the like.

[0015] At two opposing locations on the peripheral wall 10, a pair of grooves 16 are formed in a height direction, i.e., the vertical direction in FIG. 1, from the wall-surface-contacting portion 14 to the bottom wall 11. The grooves 16 are recessed in a generally U-shaped cross section, and each groove accommodates a screw 17 inserted from the front side of the wall-surface-contacting portion 14. A wall-back contacting portion 18 consisting of a clamping piece is attached to the tip of each screw 17 inserted into each groove 16. The wall-back contacting portion 18 is made of a plate material, and as shown in FIG. 4, a step 18a is formed in the center, and outer portions 18b are one step lower than the step 18a, and the surface facing the wall-surface-contacting portion 14 is parallel to the wall-surface-contacting portion 14. A screw hole 18d is formed in the end of the inner portion 18c of the wall-back contact portion 18 opposite the outer portion 18a, and a screw 17 is inserted into the screw hole 18d. One side edge of the wall-back contact portion 18 is cut out in a roughly V-shape from the middle, making the inner portion 18c narrower.

[0016] As shown in Figures 1(a) and 2(a), etc., a storage section 19 consisting of a horizontally elongated cutout hole is formed in a portion of the groove 16 of the peripheral wall 10 on the left side as viewed in Figure 1(a), adjacent to the end of the groove 16 on the bottom wall 11 side, and its right end communicates with the groove 16. The wall-back abutment 18 attached to the screw 17 is stored in this storage section 19 by rotating about the end of the screw 17 on the bottom wall 11 side. The storage section 19 is sized so that when the wall-back abutment 18 is stored, the entire wall-back abutment 18 is contained within the storage section 19 and does not protrude outside the storage section 19. Therefore, with the wall-back abutment 18 stored within the storage section 19, the peripheral wall 10 can be inserted through the wall hole 31 without any hindrance.

[0017] When the screw 17 is rotated in the tightening direction, the back-wall contact portion 18 housed in the storage portion 19 rotates and stands up as the screw 17 rotates, as shown in Figures 3 and 4. The other side of the back-wall contact portion 18 then abuts against the wall surface inside the recessed groove 16, preventing it from rotating. As shown in Figures 5 and 6, the back-wall contact portion 18 continues to thread along the axis of the screw 17 toward the front-wall contact portion 14 while remaining in the upright position. Finally, when the installation unit 1 is installed in the wall hole 31, the back-wall contact portion 18 finally abuts against the back-wall peripheral edge 33 of the wall hole 31. In other words, after being inserted into the wall hole 31 from the front-wall side, the back-wall contact portion 18 is positioned so that it can abut against the back-wall peripheral edge 33 of the wall hole 31, and faces the front-wall contact portion 14 across the wall 30, sandwiching the wall 30 between the back-wall contact portion 18 and the front-wall contact portion 14. Here, the screw 17 constitutes a clamping operation portion in the claims, which brings the wall front contact portion 14 and the wall back contact portion 18 relatively close to each other, thereby clamping the wall 30 around the wall hole 31 from the front and back.

[0018] On the back surface of the wall-surface abutting portion 14, i.e., the surface facing the peripheral wall 10, a pair of piercing portions 20 are provided at two opposing locations 180 degrees apart in the circumferential direction. The piercing portions 20 protrude toward the wall-back abutting portion 18 and can be pressed to pierce the wall-surface-side peripheral edge 32 of the wall hole 31 from the wall surface side. Each piercing portion 20 is formed as a cone extending from one end face of a short cylinder, with a tapered, pointed tip. Each piercing portion 20 is located on the side of the wall-surface abutting portion 14 where the wall-back abutting portion 18 is located relative to the center of the wall hole 31. More specifically, it protrudes from the position of the corresponding wall-surface abutting portion 14 within the range where the wall-back abutting portion 18 abuts against the wall 30.

[0019] At two opposing locations on the inner wall surface of the peripheral wall 10, 180 degrees apart, semi-cylindrical portions 21 are provided along the inner wall surface from the opening 12 to the bottom wall 11, and at the end on the opening 12 side, fixing holes 22 are provided into which tapping screws 51 for fixing wiring devices, sensors, etc. can be attached.

[0020] In addition, on the wall surface of the wall surface abutment portion 14, i.e., the surface opposite the peripheral wall 10, positioning concave surfaces 23 are formed at two opposing locations to position the wiring device mounting frame 41 when attaching the wiring device 40 to the installation body 1.

[0021] Next, a method for installing the installation body 1 configured as described above in the wall hole 31 and attaching the wiring device 40 and the sensor 60 will be described. First, a wall hole 31 of a size that allows the peripheral wall 10 of the installation body 1 to be inserted without rattle is drilled in a wall 30 such as a ceiling wall or an interior wall using a hole saw or the like.

[0022] Next, as shown in FIG. 7( a), the cable 50 behind the wall is pulled out to the wall surface through the wall hole 31, introduced into the interior space of the installation body 1 through the cable pull-out hole 15 in the bottom wall 11 of the installation body 1, and further pulled out to the opening 12. Next, with the back-of-wall contact portion 18 of the installation body 1 housed in the storage portion 19, the peripheral wall 10 is inserted into the wall hole 31 from the bottom wall 11 side. Then, once the front-of-wall contact portion 14 abuts against the surface of the wall 30, the screw 17 serving as the clamping operation portion is turned from the front-of-wall side. This causes the back-of-wall contact portion 18 in the storage portion 19 to rise from its housed state and rotate, so that its side edge abuts against the wall surface in the recessed groove 16. As the screw 17 is further turned, the back-of-wall contact portion 18 is prevented from rotating by the wall surface in the recessed groove 16, and thereafter it threads toward the front-of-wall contact portion 14 side. As a result, the wall back contact portion 18 approaches the wall front contact portion 14 and finally contacts the wall back peripheral edge 33 of the wall hole 31 as shown in Figure 7(b), and the installation body 1 is fixed to the wall hole 31 with the wall 30 sandwiched between the wall front contact portion 14 and the wall back contact portion 18. Note that Figure 2(b) is a cross-sectional view taken along a cutting line passing through the pair of piercing portions 20, 20 in Figure 1(a), and Figures 4(b) and 7(b) are cross-sectional views taken along a cutting line passing through the pair of screws 17, 17 in Figures 3(a) and 5(a), respectively, and the cutting positions in Figure 2(b) and Figures 4(b) and 7(b) are slightly different in the circumferential direction.

[0023] During this time, when the back-wall contacting portion 18 contacts the back-wall peripheral edge 33 of the wall hole 31, the piercing portion 20 of the front-wall contacting portion 14 is pressed and pierces the front-wall peripheral edge 32 of the wall hole 31. Here, because the wall 30 is formed of gypsum board, the entire piercing portion 20 pierces into the wall 30. Once the piercing portion 20 has pierced, the installation body 1 is prevented from rotating circumferentially along the wall surface and shifting. This completes the installation of the installation body 1 into the wall hole 31.

[0024] Next, the wiring device 40 and the sensor 60 are attached to the installation body 1. First, a case where the wiring device 40 is attached to an indoor wall will be described with reference to FIG.

[0025] As described above, the cable 50 behind the wall is pulled out through the wall hole 31 and inserted into the interior space of the installation body 1. After the installation body 1 is installed in the wall hole 31, the end of the cable 50 pulled out through the opening 12 of the installation body 1 is connected to the wiring device 40. After the cable 50 is connected, the end of the cable 50 is pushed back into the installation body 1, and the wiring device 40 is accommodated inside the peripheral wall 10 of the installation body 1. At the same time, the wiring device mounting frame 41 to which the wiring device 40 is attached is accommodated and positioned within the positioning recess 23 of the wall surface abutting portion 14 of the installation body 1. Then, tapping screws 51 are inserted through a pair of upper and lower screw insertion holes 42, 42 provided at the upper and lower ends of the wiring device mounting frame 41 and attached to the fixing holes 22 of the wall surface abutting portion 14 of the installation body 1, thereby attaching the wiring device mounting frame 41. Finally, a decorative plate 43 is attached from the front side of the wiring device mounting frame 41. As a result, the wall surface abutment portion 14 and the wiring device mounting frame 41 are entirely covered with the decorative plate 43, with only the front portion of the wiring device 40 exposed.

[0026] Next, a case where the sensor 60 is attached to a ceiling wall will be described with reference to FIG. The sensor 60 is composed of a sensor main body 61 and a base 62 assembled in two layers, one above the other. The base 62 is provided with a pair of screw insertion holes 63 through which the tapping screws 51 are inserted.

[0027] First, as in the case of installing the wiring device 40 described above, as shown in FIG. 9 , the cable 50 wired behind the wall is pulled out onto the wall surface through the opening 12 of the installation body 1 installed in the wall hole 31. Then, the cable is passed through the central opening of the base 62 and pulled downward. The base 62 is then placed against the wall surface abutment portion 14 of the installation body 1 from below. A pair of tapping screws 51, 51 are inserted into the enlarged portions 63a, 63a of a pair of screw insertion holes 63, 63 of the base 62. The base 62 is then rotated to relatively move the tapping screws 51 along the arc of the elongated holes 63b of the screw insertion holes 63, thereby tightening the screws. Once the base 62 is attached to the wall surface abutment portion 14 of the installation body 1, the tip of the cable 50 is connected to the sensor main body 61, and the sensor main body 61 is assembled to the base 62. This completes the installation of the sensor 60 on the installation body 1.

[0028] Next, the operation of the installation body 1 of this embodiment will be described. When pressed, the piercing portion 20 of the installation unit 1 penetrates the wall front peripheral edge 32 of the wall hole 31 from the wall front side, preventing the installation unit 1 from shifting circumferentially relative to the wall 30 and allowing the installation unit 1 to be stably installed in the wall hole 31. As a result, when installing the installation unit 1, the installation unit 1 can be temporarily fastened to the wall hole 31 and the wall front abutment portion 14 and the wall back abutment portion 18 can clamp the peripheral edge of the wall hole 31, making the installation easy. Furthermore, after installation, the installation unit 1 can be reliably prevented from rotating circumferentially relative to the wall hole 31 and shifting, and the installation unit 1 or the wiring device 40 can be reliably prevented from shifting circumferentially or the cable 50 connected to the wiring device 40 in the installation unit 1 from twisting during use of the wiring device 40 attached to the installation unit 1.

[0029] In addition, the wall-front contact portion 14 and the wall-back contact portion 18 face each other across the wall 30, and the piercing portion 20 protrudes within the range where the wall-back contact portion 18 contacts the wall 30, so the piercing portion 20 pierces from the front side opposite the wall-back contact portion 18 within the range of the area supported by the wall-back contact portion 18, and can maintain a more stable piercing state.

[0030] The wall back contacting parts 18 are scattered at two locations and contact the wall back side periphery 33, and two piercing parts 20 are provided, and each piercing part 20 pierces within the range where the wall back contacting part 18 contacts the wall 30, so the effect of maintaining the piercing state by the piercing parts 20 can be obtained at multiple positions, further enhancing the effect.

[0031] In addition, since the entire piercing portion 20 is pierced into the wall 30, even when the wall 30 is not clamped from the front or back, relative movement with respect to the wall hole 31 is restricted, and the piercing portion 20 is prevented from coming out due to the weight of the installation body 1 itself.

[0032] Incidentally, the piercing portion 20 in the above embodiment is formed as a small tapered protrusion with a conical shape extending from the end face of a short cylinder, but is not limited to this shape and may be formed as, for example, a needle shape, a triangular pyramid shape, a square pyramid shape, etc. Furthermore, the piercing portion 20 may be formed as a number of very short small protrusions protruding from a specific location on the wall surface abutting portion 14.

[0033] Furthermore, the piercing portions 20 are provided at two opposing positions on the wall surface abutting portion 14, but they may be provided at only one position, or at three or more positions. When there are multiple piercing portions 20, all of them may be formed with the same size and material, or the sizes, materials, etc. may be different among the multiple piercing portions.

[0034] Furthermore, although two piercing portions 20 and two wall-back abutment portions 18 are provided facing each other in the above embodiment, the number of piercing portions 20 and the number of wall-back abutment portions 18 do not have to be the same. For example, a pair of piercing portions 20, 20 may be provided facing both sides of one wall-back abutment portion 18, that is, two piercing portions 20 may be provided so as to sandwich one wall-back abutment portion 18 from both sides.

[0035] The piercing portion 20 is formed integrally with the installation body 1, but may be provided separately. In this case, the piercing portion 20 may be made of a material different from that of the wall surface abutment portion 14, for example, metal to correspond to the material of the wall 30 so as to make it easier to pierce the wall 30, and the length, size, shape, etc. may be changed as desired to fit the wall 30.

[0036] Furthermore, the piercing portion 20 may adjust the amount of piercing in the process of clamping the wall 30 between the wall front contact portion 14 and the wall back contact portion 18.

[0037] In addition, the installation body 1 in the above embodiment is installed in the wall hole 31 and a sensor 60 and a wiring device 40 are attached, but this is not limited to this and it can also be used, for example, as an auxiliary base for attaching a downlight.

[0038] In this case, as shown in Fig. 10, the downlight 70 has a bulb housed in the internal space of a housing 71 made of a peripheral wall having a substantially truncated cone shape, a ring-shaped flange 73 that protrudes laterally and is integrally formed on the peripheral edge of a bottom opening 72 of the housing 71, and a pair of leaf springs 74, 74 that extend in opposite directions from the joint between the peripheral edge of the bottom opening 72 of the housing 71 and the flange 73 as their base ends. To install this downlight 70, the installation body 1 is fixed to the wall hole 31, and then the downlight 70 is inserted into the installation body 1 through the opening 12 of the installation body 1. Then, the wall 30 and the installation body 1 are sandwiched between the flange 73 and the leaf springs 74, and the downlight 70 can be installed.

[0039] In the above embodiment, the wall hole 31 to which the installation body 1 is fixed is formed as a circular through hole, but when the peripheral wall 10 of the installation body 1 is formed as a polygonal cylinder such as a square cylinder or a hexagonal cylinder, or an elliptical cylinder, the wall hole 31 is formed into a shape corresponding to that.

[0040] Furthermore, in the above embodiment, the wall 30 to which the installation body 1 is fixed is formed of gypsum board, but the present invention can also be applied in the same way to cases where the wall 30 is made of other wooden boards such as plywood boards. [Explanation of symbols]

[0041] 1: Installation body, 14: Wall surface contact part, 17: Screw, 18: Wall back contact part, 20: Piercing part, 30: Wall, 31: Wall hole, 32: Wall surface periphery, 33: Wall back periphery.

Claims

1. a wall back abutment portion that is inserted into a wall hole formed in the wall from the front side of the wall and is positioned so as to be able to abut against a peripheral edge of the wall back side of the wall hole; a wall surface abutment portion that abuts against the peripheral edge of the wall surface of the wall hole; a clamping operation unit that brings the wall front contact portion and the wall back contact portion relatively close to each other to clamp the peripheral wall of the wall hole from the front and back; a piercing portion that protrudes from the wall front contact portion toward the wall back contact portion and that can be pressed to pierce the periphery of the wall hole from the wall front side; An installation body for a wall hole, comprising:

2. 2. The installation body for a wall hole according to claim 1, wherein the piercing portion is located on the side of the wall hole where the wall back abutment portion is located.

3. At least a portion of the wall front contact portion and the wall back contact portion face each other across the wall, 3. The installation body for a wall hole according to claim 2, wherein the piercing portion protrudes from the corresponding wall surface abutting portion within a range where the wall back abutting portion abuts against the wall.

4. The wall back abutment portion is abutted against the wall back in a scattered manner, The installation body for a wall hole according to claim 3, characterized in that at least two of the piercing portions are provided, and each of the piercing portions pierces within the range in which the wall-back abutment portion abuts against the wall.

5. An installation body for a wall hole as described in any one of claims 1 to 4, characterized in that by inserting the entire piercing portion into the wall, relative movement with respect to the wall hole is restricted even when the wall is not clamped from the front or back, and the piercing portion is prevented from coming out due to the weight of the installation body itself.

Images