JP2012233555A - Fixed structure using wood screw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely and rigidly fix an attachment body to a body to be attached by using wooden screws.SOLUTION: In a hand rail bracket 100 as the attachment body employing the fixed structure, long-hole shaped penetration holes 123 are formed at the attachment body, the wooden screws 500 are screwed into the body to be attached via the penetration holes 123, and the attachment body is pressed against a wall surface W1 as the body to be attached by using seat faces 520 of the wooden screws 500. The penetration holes 123 are vertically formed with respect to the wall surface W1, a parallel contact face 126 parallel with the wall surface W1 and an inclined contact face 127 inclined with respect to the body to be attached are formed at upper end edges 125 of the penetration holes 123, and when shafts 530 of the wooden screws 500 are obliquely screwed into the body to be attached by making it contact with an upper end terminal point 127A at the side of the inclined contact face and with a lower end terminal point 126A at the side of the parallel contact face at an opposite side with the shafts 530 sandwiched therebetween, the seat faces 520 of the wooden screws 500 contact with the inclined contact face 127.

Description

  The present invention relates to a fixing structure for fixing a handrail bracket, a handle or the like to a wall surface or the like with a wood screw.

As shown in FIG. 14, in order to fix an attachment 10 such as a handrail bracket to an attachment 11 such as a wall surface using a wood screw 1, a through hole 5 is formed in the attachment 10, and the through hole 5 Then, the wood screw 1 is screwed into the attachment object 11 via the head and the attachment object 10 is pressed against the attachment object 11 with the head 6 of the wood screw 1.
Here, when the attachment 10 is fixed to the attachment 11 with the wood screw 1 inclined, it is necessary to increase the diameter of the through hole 5.
However, if the diameter of the through hole 5 is increased, the head 6 of the wood screw may come out of the through hole 5 and the attachment 10 may not be fixed. Therefore, the washer 12 may be used as shown in FIG. However, when the washer 12 is used, there is a problem that workability is deteriorated.

  In order to eliminate the deterioration of workability due to the use of the washer 12, the invention of Japanese Patent No. 3207830 is a structure for fixing the attachment 10 to the attachment 11 by screwing the wood screw diagonally without using the washer 12. Was invented.

  The invention according to this patent No. 3207830 is “to form a through hole in the attachment, screw a wood screw into the attachment through the through hole, and press the attachment to the attachment with the head of the wood screw and fix it. In the fixing structure, a fixing structure using a wood screw in which a taper is formed in the through hole so as to expand the diameter toward an attachment, and a wood screw is inserted obliquely along the taper. ].

Japanese Patent No. 3207830

The invention according to Japanese Patent No. 3207830 has the following problems.
First, since the force with which the wood screw presses the attachment against the attachment is transmitted to the attachment through the seat surface, which is the lower surface of the head of the wood screw, the greater the contact area of the seat surface with the attachment, the more reliably the force Is transmitted to the attachment.
However, in the invention according to Japanese Patent No. 3207830, even if a counterbore which the head of the wood screw is immersed is provided, only about half of the seating surface is in contact.
For this reason, in the invention according to Japanese Patent No. 3207830, the degree of fixing of the attachment to the attached object tends to be weak.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fixing structure using wood screws that can fix an attachment to a to-be-attached object more securely and firmly.

  The first wood screw fixing structure according to the present invention forms an elongated through hole in the attachment, and screws the wood screw into the attachment through the through hole, and attaches the attachment to the head surface of the wood screw. The through hole is opened perpendicular to the object to be attached, and the upper end edge of the through hole is parallel to the object to be attached. A parallel contact surface and an inclined contact surface that is inclined with respect to the object to be attached are formed, and the axis of the wood screw is connected to the upper end point on the inclined contact surface side and the lower end point on the opposite side of the parallel contact surface across the shaft When it is screwed obliquely into the attachment object, the seat surface of the head of the wood screw comes into contact with the inclined contact surface.

  The fixing structure with the second wood screw according to the present invention is such that a through hole is formed in the attachment, the wood screw is screwed into the attachment through the through hole, and the attachment is attached to the attachment surface of the head of the wood screw. The through hole has a tapered surface that is reduced in diameter toward the object to be attached, and a parallel contact that is parallel to the object to be attached to the upper end edge of the through hole. And an inclined contact surface that is slanted with respect to the attachment, and the axis of the wood screw contacts the upper end point on the inclined contact surface side and the lower end point on the opposite parallel contact surface across the shaft In addition, when it is also brought into contact with the tapered surface and screwed into the attachment object obliquely, the seating surface of the head of the wood screw comes into contact with the inclined contact surface.

  The fixing structure with the third wood screw according to the present invention is such that a through hole is formed in the attachment, the wood screw is screwed into the attachment through the through hole, and the attachment is attached to the attachment surface of the head of the wood screw. The through hole has a stepped portion that is reduced in diameter toward the object to be attached, and a parallel contact that is parallel to the object to be attached to the upper end edge of the through hole. And an inclined contact surface that is slanted with respect to the attachment, and the axis of the wood screw contacts the upper end point on the inclined contact surface side and the lower end point on the opposite parallel contact surface across the shaft In addition, when it is also brought into contact with the protruding corner portion of the staircase and screwed into the attachment object obliquely, the seating surface of the head of the wood screw comes into contact with the inclined contact surface.

The fixing structure by the wood screw according to the present invention securely fixes the attachment to the attachment by the wood screw seating surface coming into contact with the inclined contact surface even if the wood screw is obliquely screwed into the attachment and the attachment. .
Further, in the first invention, the inclined contact surface side upper terminal point and the parallel contact surface side lower terminal point, in the second invention, the inclined contact surface side upper terminal point, the parallel contact surface side lower terminal point and the tapered surface, the third surface In the invention, since the screwing of the wood screw is guided by the upper end point on the inclined contact surface side, the lower end point on the parallel contact surface side, and the protruding side corner portion of the staircase portion, it is possible to securely and firmly fix.

1 is a schematic cross-sectional view of a handrail bracket that employs a wood screw fixing structure according to a first embodiment of the present invention. 1 is a schematic plan view of a handrail bracket adopting a wood screw fixing structure according to a first embodiment of the present invention. It is a schematic front view of the bracket for handrail which employ | adopted the fixation structure by the wood screw which concerns on the 1st Embodiment of this invention. It is a schematic right view of the bracket for handrails which employ | adopted the fixation structure by the wood screw which concerns on the 1st Embodiment of this invention. It is a schematic sectional drawing which shows the state by which the bracket for handrails which employ | adopted the fixation structure by the wood screw which concerns on the 1st Embodiment of this invention was fixed to the corner. It is a schematic sectional drawing which shows the state by which the bracket for handrails which employ | adopted the fixation structure by the wood screw which concerns on the 1st Embodiment of this invention was fixed to the wall surface. It is a schematic expanded sectional view which shows the relationship between the through-hole and the wood screw of the state which the bracket for handrails which employ | adopted the fixation structure by the wood screw which concerns on the 1st Embodiment of this invention was being fixed to the entrance corner part. It is a schematic sectional drawing which shows the state by which the bracket for handrails which employ | adopted the fixation structure by the wood screw which concerns on the 2nd Embodiment of this invention was fixed to the corner. It is a schematic sectional drawing of the handrail bracket which employ | adopted the fixation structure by the wood screw which concerns on the 2nd Embodiment of this invention. It is a schematic top view of the bracket for handrails which employ | adopted the fixation structure by the wood screw which concerns on the 2nd Embodiment of this invention. It is a schematic sectional drawing which shows the state by which the bracket for handrails which employ | adopted the fixation structure by the wood screw which concerns on the 3rd Embodiment of this invention was fixed to the corner. It is a schematic sectional drawing of the handrail bracket which employ | adopted the fixation structure by the wood screw which concerns on the 3rd Embodiment of this invention. It is a schematic top view of the bracket for handrails which employ | adopted the fixation structure by the wood screw which concerns on the 3rd Embodiment of this invention. It is a schematic sectional drawing of the conventional fixing structure by this kind of wood screw. It is a schematic sectional drawing of the conventional fixing structure by this kind of wood screw.

  In the fixing structure using wood screws according to the first embodiment of the present invention, an elongated through-hole 123 is formed in an attachment, and the wood screw 500 is screwed into the attachment through the through-hole 123 to attach the attachment. The fixing structure is such that the seat surface 520 of the head 510 of the wood screw 500 is pressed against and fixed to the attachment, and the through-hole 123 is formed perpendicular to the attachment, and the upper end edge of the through-hole 123 Are formed with a parallel contact surface 126 parallel to the object to be attached and an inclined contact surface 127 oblique to the object to be attached, and the shaft 530 of the wood screw 500 is connected to the upper end point on the inclined contact surface side. When the contact surface 127A and the lower end point 126A on the opposite side of the parallel contact surface across the shaft 530 are contacted with each other and screwed obliquely into the attachment object, the seating surface 520 of the head 510 of the wood screw 500 contacts the inclined contact surface 127. It is like that.

  As shown in FIG. 1 and the like, a handrail bracket 100 as an attachment employing such a fixing structure using wood screws is fixed to a handrail fixing portion 110 to which a handrail 200 is attached and to a wall surface as an attached portion. It has a seat part 120, and a connection part 130 having a substantially ¼ arc shape that connects the handrail fixing part 110 and the fixed seat part 120. The handrail bracket 100 shown in FIG. 1 and the like is provided with a cover that is attached to the connecting portion 130 and hides the inner surfaces of the handrail fixing portion 110 and the fixed seat portion 120. However, the first embodiment of the present invention is not limited thereto. The cover is not shown in the figure because it is not necessary for the description of the fixing structure using wood screws according to the above.

  As shown in FIG. 5, the handrail bracket 100 is also fixed to a corner portion that is an inner side where two wall surfaces W1 and W2 intersect at right angles. When the handrail bracket 100 is fixed to the corner, the back surface 121 of the fixed seat 120 is in close contact with one wall surface W1, and the outer edge 122 of the fixed seat 120 is in contact with the other wall surface W2. It is supposed to be. Further, in such a corner, there is no column P on the back side of the two wall surfaces W1 and W2, and the column P is often located inside the intersection where the two wall surfaces W1 and W2 intersect.

  In addition, as shown in FIG. 6, this handrail bracket 100 can be fixed not only to the above-mentioned corner portion but also to a wall surface W3 having a pillar P on the back.

  The handrail fixing portion 110 of the handrail bracket 100 is formed in a bottomed cylindrical shape into which the end portion of the handrail 200 is inserted, and the bottom portion 111 is provided for the wood screw 500 screwed into the end portion of the handrail 200. Are opened in a horizontal row (see FIG. 4).

The fixed seat part 120 is formed in a substantially rectangular shape in plan view, and is formed at a position shifted by 90 degrees from the handrail fixing part 110. The fixing seat 120 is formed with a fixing structure using wood screws according to the first embodiment of the present invention.
This fixing structure using wood screws will be described later.

  The connecting portion 130 that connects the handrail fixing portion 110 and the fixed seat portion 120 is formed in a bowl shape with an open side that is substantially ¼ arc-shaped in a side view. That is, the opened portion is covered by attaching the above-described cover.

  The fixing structure using wood screws according to the first embodiment of the present invention is realized in the fixing seat portion 120. The two through-holes 123 having a long hole shape in plan view, which are formed in the bottom surface portion 122 of the fixed seat portion 120, are the same. The said through-hole 123 is opened perpendicularly | vertically with respect to the wall surface which is a to-be-attached object.

  In addition to the two through-holes 123, the bottom surface portion 122 has a large opening 124 positioned substantially at the center, and a small opening 125 positioned on the opposite side of the through-hole 123 across the large opening 124. Has been established.

  The through hole 123 is a portion into which the wood screw 500 is inserted. The upper end edge 125 of the through-hole 123 is connected to the outer parallel contact surface 126 and the inclined contact surface 127 on the inner side, and is raised from the other portion. For this reason, the upper end edge 125 of this through-hole 123 is formed as an upper edge part of a substantially trapezoidal shape when viewed from the front.

  The parallel contact surface 126 is a portion where the seat surface 520 of the wood screw 500 screwed perpendicularly to the wall surface W3 comes into contact (see FIG. 6). Further, the inclined contact surface 127 is a portion where the seat surface 520 of the wood screw 500 screwed obliquely with respect to the wall surface W1 comes into contact (see FIG. 5).

  Here, the point closest to the wall surface among the edges of the inclined contact surface 127 is the upper end point 127A on the inclined contact surface side, and on the opposite side, that is, among the edges of the back surface portion 121 of the fixed seat portion 120 of the through hole 123. The point farthest from the inclined contact surface side upper end point 127A is defined as a parallel contact surface side lower end point 126A.

  For example, as shown in FIG. 5, when fixing the handrail bracket 100 to the corner, there is no pillar P or the like into which the wood screw 500 is screwed directly behind the bottom surface portion 122 of the fixed seat portion 120 of the handrail bracket 100. The column P exists in an oblique direction. In such a case, in order to securely screw the wood screw 500 into the pillar P, the wood screw 500 must be screwed obliquely with respect to the wall surface W1. As shown in FIGS. 5 and 7, when the shaft 530 of the wood screw 500 is screwed so as to contact the inclined contact surface side upper terminal point 127 </ b> A and the parallel contact surface side lower terminal point 126 </ b> A, the wood screw 500 is securely and It is firmly screwed into the pillar P. In addition, the handrail bracket 100 can be fixed to the wall surface W1 by the seating surface 520 of the wood screw 500 coming into contact with the inclined contact surface 127.

The screwing direction of the wood screw 500 is guided by the inclined contact surface side upper end point 127A and the parallel contact surface side lower end point 126A. As a result, the wood screw 500 is surely screwed into the column P, and the wood screw 500 has a seating surface 520. Comes into contact with the inclined contact surface 127, so that the handrail bracket 100 can be more securely and firmly fixed.
In this case, since one screw screw 500 is screwed into each of the two through holes 123, the handrail bracket 100 is fixed to the wall surface W1 by the two wood screws 500.

On the other hand, as shown in FIG. 6, when the handrail bracket 100 is fixed to the portion where the pillar P is present on the back side instead of the corner, the wood screw 500 is screwed perpendicularly to the wall surface W3 from the through hole 123. . At this time, the wood screw 500 passes through the wall surface W3 and is screwed into the column P, and the seating surface 520 of the wood screw 500 comes into contact with the parallel contact surface 126 of the through-hole 123 to fix the handrail bracket 100 to the wall surface P3. .
In this case, the wood screw 500 is also screwed from the small opening 125. That is, in this case, the handrail bracket 100 is fixed to the wall surface P3 with the three wood screws 500.

  As described above, the handrail bracket 100 adopting this wood screw fixing structure can cope with a case where the wood screw 500 must be screwed in an oblique direction or a case where it can be screwed vertically.

  The large opening 124 is a portion used when attaching the handrail bracket 100 using an anchor bolt (not shown).

Next, a fixing structure using wood screws according to the second embodiment of the present invention will be described.
In the fixing structure using wood screws according to the second embodiment, a through hole 323 is formed in an attachment, and the wood screw 500 is screwed into an attachment through the through hole 323, and the attachment is attached to a head 510 of the wood screw 500. The through hole 323 has a tapered surface 328 that is reduced in diameter toward the attached object, and an upper end edge 325 of the through hole 323 is provided at the upper edge 325 of the through hole 323. A parallel contact surface 326 parallel to the attachment object and an inclined contact surface 327 inclined to the attachment object are formed, and the shaft 530 of the wood screw 500 is connected to the inclined contact surface side upper end point 327A. When the shaft 530 is brought into contact with the opposite lower end point 326A of the parallel contact surface on the opposite side, and the taper surface 328 is also brought into contact with the object to be mounted obliquely, the seat surface 520 of the head 510 of the wood screw 500 is obtained. Is inclined It is adapted to contact the Sawamen 327.

  The handrail bracket 300 adopting the wood screw fixing structure according to the second embodiment is different from the wood screw fixing structure according to the first embodiment described above with the wood screw formed on the fixing seat 320. Since only the structure is different, description of other parts, that is, the handrail fixing part 310, the connection part 330 connecting the handrail fixing part 310 and the fixed seat part 320, and the cover attached to the connection part 330 is omitted. .

As shown in FIGS. 8 to 9, the fixing seat portion 320 of the handrail bracket 300 as an attachment to which the fixing structure using wood screws according to the second embodiment is adopted is a surface closer to the inside of the through hole 323. That is, a tapered surface 328 is formed from the terminal point 327A on the inclined contact surface toward the back surface 321 side of the fixed seat 320. The tapered surface 328 continues from the inclined contact surface 327 of the through hole 323 to the back surface portion 321 side of the fixed seat portion 320. The through hole 323 is perpendicular to the fixed seat 320 from the parallel contact surface 326.
Needless to say, the opening on the back side of the through-hole 323 is sized to allow the shaft 530 of the wood screw 500 to be used to pass through.

  When the shaft 530 of the wood screw 500 is brought into contact with the inclined contact surface side upper end point 327A and the parallel contact surface side lower end point 326A of the through hole 323, the through hole 323 comes into contact with the tapered surface 328. It has become. That is, in the handrail bracket 300 adopting the wood screw fixing structure according to the second embodiment, when the wood screw 500 is screwed in an oblique direction, the shaft 530 of the wood screw 500 causes the upper end of the through hole 323 on the inclined contact surface side. Not only the point 327A and the lower end point 326A on the parallel contact surface side but also the tapered surface 328 is guided and screwed.

  Then, when the wood screw 500 is screwed in this state, as shown in FIG. 8, the seating surface 520 of the head 510 of the wood screw 500 comes into contact with the inclined contact surface 327 and the handrail bracket 300 is fixed to the wall surface W1. .

  In addition, when screwing the wood screw 500 vertically with respect to the fixed seat 320, the shaft 530 of the wood screw 500 is brought into contact with the vertical surface that is not the tapered surface 328 and screwed. Then, the seating surface 520 of the head 510 of the wood screw 500 fixes the handrail bracket 300 to the wall surface W <b> 1 while being in contact with the parallel contact surface 326.

Next, a fixing structure using wood screws according to a third embodiment of the present invention will be described.
In the fixing structure using wood screws according to the third embodiment, a through hole 423 is formed in an attachment, and the wood screw 500 is screwed into an attachment through the through hole 423, and the attachment is attached to a head 510 of the wood screw 500. The through hole 423 has a stepped portion 429 whose diameter is reduced toward the attached object, and the upper end edge 425 of the through hole 423 has a fixed structure. A parallel contact surface 426 that is parallel to the attachment object and an inclined contact surface 427 that is inclined with respect to the attachment object are formed, and the shaft 530 of the wood screw 500 is connected to the upper end point 427A on the inclination contact surface side. When it is brought into contact with the lower end point 426A on the opposite side of the parallel contact surface across the shaft 530 and also in contact with the protruding side corner portion 429A of the staircase portion 429, the head of the wood screw 500 is Part 510 Surface 520 comes into contact with the inclined contact surface 427.

  The handrail bracket 400 adopting the wood screw fixing structure according to the third embodiment is different from the handrail bracket 300 described above only in the portion of the tapered surface 328, and will be mainly described.

  As shown in FIGS. 11 to 13, the handrail bracket 400 as an attachment that employs a wood screw fixing structure according to the third embodiment has a surface (first side) of the through hole 423 of the fixing seat 420. In the second embodiment, the portion that was the tapered surface 328) is a stepped portion 429 that is reduced in diameter toward the wall surface as an attachment.

  In this through hole 423, the shaft 530 of the wood screw 500 is in contact with the inclined contact surface side upper terminal point 427A, the parallel contact surface side lower terminal point 426A of the through hole 423, and the protruding side corner portion 429A of the stepped portion 429. When the screw is inclined, the seating surface 520 of the wood screw 500 comes into contact with the contact inclined surface 427.

  That is, in the handrail bracket 400 adopting the wood screw fixing structure according to the third embodiment, when the wood screw 500 is screwed diagonally, the shaft 530 of the wood screw 500 causes the upper end point 427A on the inclined contact surface side of the through hole 423. Then, it is guided in contact with three points of the lower end point 426A on the parallel contact surface side and the protruding side corner portion 429A of the stepped portion 429.

  When screwing the wood screw 500 vertically with respect to the fixed seat portion 420, the shaft 530 of the wood screw 500 is brought into contact with the vertical surface on the side where the stepped portion 429 is not formed and screwed. Then, the seating surface 520 of the head 510 of the wood screw 500 fixes the handrail bracket 400 to the wall surface W2 while being in contact with the parallel contact surface 426.

  When screwing the wood screw 500 vertically with respect to the fixed seat portion 420, the shaft 530 of the wood screw 500 is brought into contact with the vertical surface on the side other than the stepped portion 429 and screwed. Then, the seating surface 520 of the head 510 of the wood screw 500 fixes the handrail bracket 300 to the wall surface in contact with the parallel contact surface 326.

  In the first to third embodiments described above, the handrail brackets 100, 300, and 400 are used as attachments, and the wall surface is used as the attachment. However, the fixing structure using wood screws according to the present invention is limited to this. It goes without saying that it is never done.

100 Handrail bracket (attachment)
123 Through-hole 126 Parallel contact surface 126A Parallel contact surface side lower end point 127 Inclined contact surface 127A Inclined contact surface upper end point 500 Wood screw 510 Head 520 Seat surface 530 Axis

Claims (3)

  In the fixing structure in which a long through hole is formed in the attachment, the wood screw is screwed into the attachment through the through hole, and the attachment is pressed against the attachment by the seating surface of the head of the wood screw. The through hole is formed perpendicular to the object to be attached, and the upper end edge of the through hole is parallel to the object to be attached and is inclined with respect to the object to be attached. An inclined contact surface is formed, and when the shaft of the wood screw is brought into contact with the upper end point on the inclined contact surface side and the lower end point on the opposite parallel contact surface across the shaft, A fixing structure using wood screws, wherein the seating surface of the head contacts the inclined contact surface.   In the fixing structure in which a through hole is formed in the attachment, and a wood screw is screwed into the attachment through the through hole, and the attachment is pressed against the attachment by the seating surface of the head of the wood screw, the through hole is A tapered surface having a diameter reduced toward the object to be attached, and a parallel contact surface parallel to the object to be attached to the upper end edge of the through hole, and an inclined contact inclined to the object to be attached And the axis of the wood screw is brought into contact with the upper end point on the inclined contact surface side and the lower end point on the opposite parallel contact surface across the shaft, and is also brought into contact with the tapered surface to the attachment object. A fixing structure using wood screws, characterized in that the seating surface of the head of the wood screw comes into contact with the inclined contact surface when screwed in at an angle.   In the fixing structure in which a through hole is formed in the attachment, and a wood screw is screwed into the attachment through the through hole, and the attachment is pressed against the attachment by the seating surface of the head of the wood screw, the through hole is It has a stepped portion that decreases in diameter toward the object to be attached, and a parallel contact surface that is parallel to the object to be attached and an inclined contact that is inclined to the object to be attached at the upper edge of the through hole. And the axis of the wood screw is brought into contact with the upper end point on the inclined contact surface side and the lower end point on the opposite parallel contact surface across the shaft, and is also brought into contact with the protruding corner portion of the stepped portion. When the screw is obliquely screwed into the attachment object, the wood screw fixing structure is characterized in that the seating surface of the head of the wood screw comes into contact with the inclined contact surface.

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