JP2012134623A - Wall embedded type fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve both insertion to a wall rear surface and sandwiching strength while maintaining a function for preventing sandwiching plates from falling off to the wall rear surface in a sandwich structure which is used for holding a base bracket for fixing a fixture body on an installation wall surface and uses the sandwiching plates installed at two positions on left and right sides for obtaining holding strengh.SOLUTION: A wall embedded type fixture includes: a frame like base bracket provided on an installation wall surface; a pair of sandwiching plates provided on a back side of the installation wall surface; and a fixture body attached to the base bracket. The wall embedded type fixture holds the installation wall surface with the base bracket and the sandwiching plates. A pair of through holes are provided at an upper part and a lower part of a vertical side on each of left and right inner peripheries of the base bracket. One through hole of each pair is formed in an elongated shape so that a screw inserted into the through hole is inclined, and the other hole of each pair is formed in a circular shape which is substantially equivalent to an outer shape of a screw.

Description

  The present invention relates to a wall-embedded instrument in which an instrument body is embedded and fixed in an embedding hole provided in a construction wall surface. Specifically, the base bracket to which the instrument body is attached and the back side of the construction wall surface are sandwiched. The present invention relates to a wall-embedded device in which a tool body is embedded and fixed in an embedding hole by sandwiching a construction wall surface with a plate.

  2. Description of the Related Art Conventionally, the structure of a pinch fitting has been widely used as a known fixing structure around electrical equipment such as a household outlet. Briefly describing this structure, first, a base bracket installed so as to surround the hole is covered with the embedded hole provided in the construction wall surface. A pair of through-holes exist above and below the base bracket, and a clamping plate having a size larger than that of the embedding hole is installed so as to sandwich the wall, and can be fixed to the wall by screwing each other.

  If it confirms from a construction procedure, a screw will be penetrated to one side among a pair of upper and lower through-holes provided in the base bracket, and a screw will be screwed into a pair of upper and lower sides provided in a sandwiching plate several times. Work is done in this state, but the sandwiching plate is larger in size than the embedding hole, so first insert it into the back of the wall so as to straddle the embedding hole. By passing the screw through the through hole and screwing it into the other side of the sandwiching plate, the screwing of the screw leads to the wall fixing.

JP2000-188030 JP2008-253020

  This time, we will apply this sandwiching structure as a structure to fix the product, but it is larger than the outlet, and it is necessary to withstand repeated loads during operation as well as its own weight, which is always applied to fix heavy products. Therefore, it was considered that a fixing structure to two places on the left and right sides is necessary for fixing the product that requires reliability. Although there were two choices in the vertical direction for installing the two sandwich plates on the left and right, most of the electrical wiring prepared on the back of the wall in advance is usually at the center of the opening hole compared to the opening hole opened by fixing the product. Since it is common to hang down from the top, considering the prevention of the pinching of the electrical wiring, it was judged that the pinching of the top and bottom was inappropriate, and it was considered to install it on the left and right.

  In this way, the product has two left and right fixed structures based on strength and reliability, but one side of the screw hole that is paired with the sandwiching plate to prevent the sandwiching plate from falling to the back of the wall during construction. Only a part (several rotations) is screwed first, and the fixing plate is inserted into the embedding hole provided in the construction wall with the sandwiching plate connected to the base bracket via the screw, and the construction wall is sandwiched. However, since the movable range of the sandwiching plate is restricted when the sandwiching plate and the base bracket are connected to the two fixed structures on the left and right, inserting the sandwiching plate into the embedding hole causes the sandwiching plate to be embedded. There was a problem that it could not be inserted at worst because it interfered with the hole.

  In order to solve the above problem, in the invention according to claim 1, a frame-shaped base bracket surrounding the periphery of the rectangular-shaped embedding hole provided on the construction wall surface, and the left and right sides of the base bracket on the back surface of the construction wall surface. A pair of sandwiching plates facing each other along the vertical sides, and an instrument body attached to the base bracket, and screws in a pair of through holes provided on the upper and lower vertical sides of the inner periphery of the base bracket. Inserting and screwing the screw into the screw hole of the sandwiching plate, thereby embedding a wall surface between the base bracket and the sandwiching plate, and a wall-embedded instrument, each of the left and right sides of the inner periphery of the base bracket In the pair of through-holes provided above and below the vertical side, one of the through-holes is formed in a long hole shape so that a screw passing therethrough can be inclined, and the other through-hole is formed. Holes are characterized by being formed in a substantially equal circular outer shape of the screw.

  According to the first aspect of the present invention, the angle at which the screw connected to the sandwiching plate is tilted to the inside of the base bracket can be increased by forming a long hole, which improves the insertability of the sandwiching plate with respect to the embedded hole. Since this means that the movable range has expanded in the direction, the problem of difficulty in insertion (cannot be inserted depending on the size of the embedded hole) can be solved.

  According to a second aspect of the present invention, the through hole formed in the elongated hole shape is formed to be inclined at a predetermined angle in the vertical direction from the lower side of the base bracket, and the pair of through holes of the base bracket The interval on the vertical side of the hole is equal to the interval between the pair of screw holes of the sandwiching plate.

  According to the second aspect of the present invention, after the insertion, the sandwiching plate can be installed correctly with respect to the base bracket, and can be fixed to the wall by sandwiching with the other screw. What is important here is the position and angular relationship of the long holes. The position of the long hole is to match the position that is the outermost side of the long hole with respect to the distance between the pair of upper and lower screws of the sandwiching plate. When the upper and lower screws are screwed, the distance between the screws depends on the distance between the screws of the sandwiching plate. Therefore, when tightened, the screw position with respect to the through hole of the base bracket is guided to the outermost position of the long hole. That is, the outermost movement of the sandwiching plate can sandwich the peripheral area of the embedding hole most widely, and this is the optimum positional relationship for obtaining the sandwiching strength.

  On the other hand, even when the hole angle is the same in the horizontal direction, for example, when the screw is tightened, the position of the sandwiching plate is not fixed and cannot be stopped at the optimum position to obtain the sandwiching strength. In addition, when the hole angle is a vertical direction even with a long hole, the screw to which the sandwiching plate is connected cannot be tilted toward the center of the metal frame, so that the improvement in insertability cannot be expected.

  According to the present invention, the base bracket for fixing the instrument main body is held on the construction wall surface, and in the sandwiching structure using the sandwiching plates installed at the two left and right positions in order to obtain the retaining strength, the top and bottom 1 By inserting one side of the through hole of the base bracket provided in the pair into a long hole and installing it at an appropriate position at an angle, it can be inserted into the back of the wall while retaining the function of preventing the fall of the sandwich plate to the back of the wall. It is possible to obtain both of the sandwiching strength.

It is a perspective view which shows the relationship of product fixation of this invention. It is a perspective view which shows the fixation structure to the wall of this invention. It is a perspective view which shows the construction condition of this invention. It is a figure which shows the long hole through-hole provided in the base bracket of this invention. It is a figure which shows the inclination image of the screw accompanying the long hole through-hole of this invention. It is a perspective view which shows the inclination image of the pinching plate accompanying this invention. It is a figure which shows the positional relationship of the base bracket through-hole of this invention, and a pinching plate screw hole.

  An embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, an embedding hole 2 is formed by notching a construction wall 1 made of gypsum board and partition or the like to a predetermined dimension, and is formed on the construction wall so as to surround the embedding hole 2. A base bracket 10 to be fixed, and a pair of sandwiching plates 11 that are coupled to the base bracket 10 at two locations on the left and right sides of the base bracket 10 so as to be opposed to a part of the base bracket 10 on the surface opposite to the work wall 1. Is attached.

  The base bracket 10 is formed by, for example, punching a sheet metal and using a bending process. The base bracket 10 and the base bracket 10 are operated by inserting screws 12 into through holes provided at four corners and operating the screws from a construction wall surface. The pace bracket 10 is fixed to the construction wall surface by sandwiching the construction wall surface with the sandwiching plate 11, and when the product body 3 is secured to the base bracket 10, the product body 3 is first moved to the base bracket central opening 10c. The product can be fixed by inserting and joining the flange 3a provided on the product main body and the flange 10d provided on the base bracket with the product main body fixing screw 5.

  FIG. 2 shows that the base bracket 10 and the sandwiching plate 11 are fixed by sandwiching the wall. The sandwiching plate 11 installed on the opposite side of the construction wall is formed by punching a sheet metal and screwing it to form a shape, but the screw holes 11a installed at two locations above and below are formed on the base bracket 10. It is formed at a position to be paired with through holes provided at the four corners. The sandwiching plate 11 assembled in the vertical direction on either the left or right side first penetrates the screws 12 through the two holes on the left and right sides of the base bracket 10 and then screws into the screw holes 11a at the paired positions of the sandwiching plate 11. Thus, the base bracket 10 is fixed to the wall by tightening the two screws at the upper and lower positions. When sandwiched, the folded portion 11d installed in a convex shape in front of the sandwiching plate bites into the construction wall surface 1, thereby preventing the base bracket 10 and the sandwiching plate 11 from being displaced with respect to the embedded hole 2. The prevention of deviation of the base bracket 10 also leads to prevention of deviation of the product main body 3 fixed thereto.

  The sandwiching structure has been widely used as a known fixing structure around electrical equipment such as a household outlet. This time, this basic structure is applied as a structure to fix the product, but it is larger than the outlet, and fixing a heavy product not only has its own weight constantly applied, but also has to withstand repeated loads during operation, It was considered necessary as a structure for fixing the four corners of the base bracket 10 by installing it at two places on the left and right sides in the product fixing that requires reliability.

  The actual construction flow will be described with reference to FIG. In a base bracket 10 that is fixed to a construction wall surface so as to surround the embedding hole 2 provided in the construction wall surface 1, a sandwiching plate 11 is inserted into the back of the wall from the implantation hole 2 in order to sandwich the wall surface, and a pair of bases The method of screwing the screw 12 while aligning the positions of the bracket holes 10a and 10b and the sandwiching plate 11a is normal, but in this method, there is a high possibility that the sandwiching plate 11 is dropped to the back of the wall surface during construction. Arise. If the sandwiching plate is dropped, there is no substitute part, so that the work is interrupted and serious problems such as obtaining parts occur.

  In order to solve this problem, only one side of the screw hole 11a paired with the sandwiching plate 11 is screwed in part (several turns) first, and the sandwiching plate 11 is connected to the base bracket 10 via the screw 12 in the construction. By inserting into the embedding hole 2 provided in the wall surface 1, aligning the sandwiching plate 11, and screwing the other screw 12 as a pair, the fall of the sandwiching plate 11 to the back of the wall can be suppressed. In the construction of the outlet, a similar method has been taken.

  However, the sandwiching structure adopted this time is a fixed structure with two left and right parts in consideration of strength and reliability. However, when the sandwiching plate 11 and the base bracket are connected to each other, the sandwiching plate is inserted into the embedding hole 2. When inserting 11, the sandwiching plate 11 interferes with the embedding hole 2, and it is difficult to insert, and the worst problem is that it cannot be inserted. In order to solve the problem, a method such as enlarging the embedding hole 2 or reducing the sandwiching plate 11 can be easily considered. However, since the strength of sandwiching the wall is proportional to the area of sandwiching the wall, the strength is obtained. It cannot be done easily in product fixing. In other words, the pinching strength and the insertability are in a trade-off relationship, and an improvement is required in the two left and right fixing structures. By the way, in the single pinch structure that is the fixing structure of the outlet, the pinch plate can be moved to the center of the embedding hole, inserted into the back of the wall, fixed back to the original position, etc., and fixed in one place. This problem does not occur in the structure.

  A method for solving the above problem is the present invention and is shown in FIG. In a pair of screw through holes provided on the upper and lower vertical sides of the inner periphery of the base bracket 10 through which a pair of screws for fixing at least one of the sandwiching plates is inserted, one screw through hole is provided there. The other screw hole 10a is formed in a circular shape substantially equal to the external shape of the screw. FIG. 5 shows an image of the inclination of the screw 12 by the long hole through hole 10b provided in the base bracket 10. As shown in FIG. The hole of the base bracket 10 with respect to the screw 12 is a through hole, and the diameter of the through hole is substantially equal to the outer shape of the screw 12 and the gap is small. In contrast, if the long hole through hole 10b is used, the screw 12 can be inclined in proportion to the length of the long hole.

  FIG. 6 shows the inclination of the screw 12 of the long hole through hole 10b and the inclination of the sandwiching plate 11 associated therewith. As can be easily understood from the drawing, when the screw 12 is tilted in accordance with the direction of the long hole through hole 10b, the inclination of the sandwiching plate 11 screwed into the tip of the screw 12 increases and falls into the base bracket 10 inside. That is, since the sandwiching plates 11 at the left and right positions connected to the base bracket 10 enter the inside of the embedded hole 2, the sandwiching plate 11 can be easily inserted to the back side of the wall.

  The positions of the long hole through holes 10b are the outermost positions close to the vertical side of the long hole through holes 10b and the circular through holes with respect to the inter-screw distance 15 which is the interval between the screw holes 11a of the corresponding sandwiching plate 11. It arrange | positions so that the space | interval with the hole 10a may correspond. Further, the direction (angle) of the long hole through-hole 10b is formed so as to be inclined at a predetermined angle from the lower side of the base bracket 10 in the vertical direction. As the inclination angle, the base bracket 10 is formed in a direction of about 45 degrees from the lower side toward the vertical side. Depending on the inclination angle of the long hole through hole 10b, the sandwiching plate 11 can be greatly tilted toward the base bracket central opening 10c, and the sandwiching plate 11 screwed into the tip of the screw 12 is prevented from falling to the wall back. It is possible to tilt most efficiently while leaving

  FIG. 7 shows the positional relationship between the through holes 10 a and 10 b of the base bracket 10 and the screw holes 11 a of the sandwiching play 11. After inserting the sandwiching plate 11 into the back of the wall, align the sandwiching plate 11 and screw a new screw 12 into the other screw hole 11a to be paired. When the screw 12 is screwed in, the distance between the vertical sides of the through holes 10a and 10b of the base bracket 10 is matched to the distance 15 between the screws of the sandwiching plate 11. Therefore, if the screw is naturally screwed in, the arrangement of the long hole shape 10b is the most. It is guided in the direction of the vertical side that is the outside. This guided position can guide the sandwiching plate 11 to the outermost position on the back of the wall, that is, reliably guide the sandwiching plate 11 to a position that maximizes the sandwiched wall back surface area around the embedded hole 2. This means that the pinching strength and reliability required when fixing the product are led to the position where the pinch strength and reliability are obtained most.

  As described above, according to the present invention, in the sandwiching structure installed at the left and right two places to obtain the sandwiching strength for fixing the product, one of the through holes provided in the base bracket 10 is formed into the long hole shape 10b, and the appropriate position and angle are set. It is possible to obtain both the insertion property to the wall back and the pinching strength while leaving the method of preventing the sandwiching plate 11 from falling to the wall back.

DESCRIPTION OF SYMBOLS 1 Construction wall surface 2 Embedded hole 3 Product main body 3a Product main body flange 4 Product cover 5 Product main body fixing screw 10 Base bracket 10a Through hole (circular shape)
10b Through hole (long hole shape)
10c Base bracket central opening 10d Base bracket flange 11 Clamping plate 11a Screw hole 11d Folding claw part 12 Screw 15 Distance between screws

Claims (2)

A frame-like base bracket surrounding a rectangular embedding hole provided on the construction wall; a pair of sandwiching plates facing the left and right vertical sides of the base bracket on the back of the construction wall; and the base An instrument body attached to the bracket, and screws are inserted into a pair of through holes provided on the upper and lower vertical sides of the inner circumference of the base bracket, and the screws are screwed into the screw holes of the sandwiching plate. Then, a wall-embedded instrument that clamps a construction wall surface with the base bracket and the sandwiching plate,
In the pair of through holes provided on the upper and lower vertical sides of the inner circumference of the base bracket, one through hole is formed in a long hole shape so that a screw passing therethrough can be inclined, and the other through hole is A wall-embedded device characterized by being formed in a circular shape substantially equal to the outer shape of the screw.   The through hole formed in the shape of the long hole is inclined at a predetermined angle in the vertical direction from the lower side of the base bracket, and the interval between the pair of through holes on the vertical side of the base bracket and the sandwiching 2. The wall-embedded device according to claim 1, wherein a distance between a pair of screw holes in the plate is equal.