JP7318919B2 - wall mounting unit - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall-mounted unit in which a mounting member is fastened to a wall surface with fasteners.

In general, when a support member such as a clothesline is arranged on a wall surface, an attachment member such as a bracket is attached to the wall surface and the support member is arranged through the attachment member. More specifically, as shown in FIG. 13, when attaching a mounting member 1 such as a bracket to a wall surface 2, the mounting member 1 having an insertion hole 3 is arranged on the wall surface 2, and a tapping bolt 4 is passed through the insertion hole 3. He is trying to fix the mounting member 1 to the wall surface 2 by fastening it to the wall surface 2 .

Here, when the wall surface 2 is an outer wall, the wall surface 2 is composed of the outer wall material 5 facing the outside and the base material 6 positioned inside the outer wall material 5. In such a case, The tapping bolt 4 is tightened from the outer wall member 5 to the base member 6 using an electric tool such as an impact driver.

However, when tightening the tapping bolt 4 using an electric tool such as an impact driver, there is a risk that the tapping bolt 4 will be over-tightened against the wall surface 2, causing damage due to stress concentration on the wall surface 2. If a ventilation layer is provided between the outer wall material 5 and the base material 6 of the wall surface 2, there is a concern that the wall surface 2 is more likely to be damaged.

Therefore, as shown in FIG. 14, the inventor of the present invention made the mounting member 1 a hollow structure having an internal space 9 between a first surface portion 7 on the side of the wall surface 2 and a second surface portion 8 on the side opposite to the wall surface 2, Insertion holes 10 and 11 are formed in the first surface portion 7 and the second surface portion 8 to allow the tapping bolt 4 to pass through the internal space 9 in the tightening direction. 8, the receiving member 12 screwed through the tapping bolt 4 is housed in the inner space 9 so as not to rotate together (see Patent Document 1 below). .

15, as the tapping bolt 4 is tightened against the wall surface 2, the receiving member 12 relatively moves toward the bolt head 13 of the tapping bolt 4. As shown in FIG. As a result, the second surface portion 8 is clamped and held between the bolt head 13, thereby regulating the tightening amount of the tapping bolt 4 and preventing excessive tightening.

Moreover, the receiving member 12 alleviates the stress concentration due to the tightening of the tapping bolt 4 on the second surface portion 8, and the mounting member 1 itself is also pressed against the large area of the first surface portion 7, thereby causing the tapping. Local stress does not act on the tightened portion of the bolt 4 either.

As a result, even if the tapping bolt 4 is fastened using an electric tool such as an impact driver, or if the ventilation layer 14 is provided between the outer wall material 5 and the base material 6 of the wall surface 2, the tapping bolt 4 can be Damage to the wall surface 2 due to excessive tightening can be reliably prevented.

JP 2017-110335 A

However, in adopting the wall mounting unit as described above, for example, if the receiving member 12 is formed as an integrally molded metal part and is internally threaded to allow the tapping bolt 4 to be screwed through, the It takes a lot of money to process the internal threads, which leads to a large increase in costs.

Therefore, as shown in FIG. 16, the inventor of the present invention formed a reinforcing plate 15 made of a thin metal plate with screw holes 16, and assembled a plurality of the reinforcing plates 15 with a frame 17 made of resin to form a receiving member 12'. As a result, the inventors have come up with the idea of realizing an inexpensive and highly productive receiving member 12'. It was found that there is a problem that galling (fixation due to biting) is likely to occur when 4 is screwed.

That is, the receiving member 12' accommodated in the inner space 9 of the mounting member 1 so as not to rotate together is orthogonal to the tapping bolt 4 so as to uniformly press against the second surface portion 8 when the final tightening is completed. Since it is held in this posture, the screw thread of the tapping bolt 4 engages with the threaded hole 16 of the reinforcing plate 15 while being inclined in the same direction over the entire circumference. It was thought that even if the tapping bolt 4 was only caught, continued tightening of the tapping bolt 4 would result in a stronger bite, resulting in galling.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and provides a wall-mounting unit capable of smoothly tightening fasteners such as tapping bolts without galling, thereby achieving good attachment of mounting members to the wall surface. intended to provide.

The present invention relates to a wall-mounting unit in which a mounting member is attached to a wall surface by tightening it with fasteners, and an internal wall-mounting unit is provided between a first surface portion on the wall surface side and a second surface portion on the opposite wall surface side of the mounting member. An insertion hole is provided in each of the first surface portion and the second surface portion to allow the fastener to penetrate in the tightening direction through the internal space, and between the first and second surface portions. A receiving member screwed through the fastener is accommodated in the internal space so as not to rotate together, and as the fastener is tightened against the wall surface, the receiving member moves relatively toward the fastening head of the fastener. The second surface portion is configured to move and be clamped and held between the fastening head, while the receiving member is provided with a screwing hole having a smaller diameter than the thread of the fastener and a larger diameter than the thread groove. A reinforcing plate having an opening is provided, and the reinforcing plate is held by a holding member so that at least the periphery of the screw hole of the reinforcing plate forms an inclined state along the direction of the screw thread viewed from one side of the fastener. and a pressing surface that presses against the second surface portion is formed on the opposite side of the wall surface of the holding member.

Further, in the present invention, the holding member is divided into a pair of divided pieces, and the opposing surfaces of the divided pieces are provided with holding grooves for inserting and fixing a reinforcing plate to each of the divided pieces. It is preferable to form an engaging portion that engages and connects by fitting.

Further, in the present invention, the holding member is composed of a single piece having an outer shape one size larger than that of the reinforcing plate, and the reinforcing plate is fitted and fixed to at least one of the front and back surfaces of the single piece. It is also possible to form recesses.

Further, in the present invention, a reinforcing plate is formed in a crank shape by a pair of mutually parallel flat portions having a predetermined step in the tightening direction of the fastener and an inclined portion connecting the flat portions obliquely. A threaded hole may be formed in the inclined portion.

Further, in the present invention, it is also possible to hold a plurality of reinforcing plates collectively by the holding member, and to dispose each reinforcing plate so as to be individually fitted into the screw groove of the fastener .

According to the wall-mounted unit of the present invention, the following various excellent effects can be obtained.

(I) According to the invention of claim 1 of the present invention, galling occurs in the fastener even though the receiving member having a structure in which the reinforcing plate is held by the holding member is inexpensive and highly productive. The attachment member can be smoothly attached to the wall surface by smoothly tightening the attachment member.

(II) According to the second aspect of the present invention, the reinforcing plate can be easily held by the holding member simply by fitting the divided pieces while inserting the reinforcing plate into the holding grooves of the divided pieces and fixing them. Moreover, the fitting between the split pieces can be reliably held by the engagement connection of the engagement portions.

(III) According to the third aspect of the present invention, the reinforcing plate can be easily held by the holding member simply by fitting the reinforcing plate into the fitting recess of the single piece. can be configured with only a single piece, and cost reduction can be achieved by reducing the number of parts.

(IV) According to the invention of claim 4 of the present invention, the reinforcing plate can be manufactured simply and at low cost by press working. It is possible to greatly suppress the deterioration of the properties.

(V) According to the fifth aspect of the present invention, the fixing strength can be easily improved simply by increasing the number of reinforcing plates.

1 is a cross-sectional view showing an embodiment of a wall-mounted unit of the present invention; FIG. FIG. 2 is a cross-sectional view showing a state in which the attachment member of FIG. 1 has been attached; FIG. 2 is a perspective view showing details of the reinforcing plate of FIG. 1; FIG. 4 is a sectional view taken along line IV-IV in FIG. 3; 2 is a perspective view showing details of one split piece of FIG. 1; FIG. FIG. 6 is a view in the direction of arrows VI-VI in FIG. 5; 2 is a perspective view showing details of the other divided piece of FIG. 1; FIG. FIG. 8 is an arrow view in the VIII-VIII direction of FIG. 7; FIG. 4 is a perspective view showing another example of a holding member used in the present invention; FIG. 10 is a perspective view showing a state in which a reinforcing plate is removed from the holding member of FIG. 9; FIG. 10 is a perspective view of the holding member and reinforcing plate of FIG. 9 cut at an intermediate portion; FIG. 12 is a side cross-sectional view of the holding member and reinforcing plate in FIG. 11 ; FIG. 11 is a cross-sectional view showing a conventional example; FIG. 11 is a cross-sectional view showing a further conventional example invented by the present inventor; FIG. 15 is a cross-sectional view showing a state in which the attachment member of FIG. 14 has been attached; FIG. 15 is a perspective view showing a structural example of the receiving member of FIG. 14 invented by the present inventor;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 2 show an embodiment of the wall mounting unit of the present invention. In this embodiment, tapping bolts 4 are attached to the wall surface 2 in substantially the same manner as the conventional example shown in FIGS. 14 and 15 described above. The mounting member 1 is attached by tightening it with a (fastener), and an internal space 9 is formed between the first surface portion 7 on the side of the wall surface 2 and the second surface portion 8 on the side opposite to the wall surface 2. Insertion holes 10 and 11 for passing the tapping bolt 4 in the tightening direction through the internal space 9 are formed in the first surface portion 7 and the second surface portion 8, respectively. A receiving member 18 screwed through the tapping bolt 4 between the portion 7 and the second surface portion 8 is accommodated in the internal space 9 so as not to rotate together. On the other hand, as it is tightened, the receiving member 18 moves relatively toward the bolt head 13 (tightening head) of the tapping bolt 4 so that the second surface portion 8 is clamped and held between the tapping bolt 4 and the bolt head 13. It has become.

However, the receiving member 18 is provided with a plurality of reinforcing plates 20 having screw holes 19 having a diameter smaller than the thread of the tapping bolt 4 and larger than the thread groove. As shown, each reinforcing plate 20 has a pair of flat portions 21 and 22 parallel to each other and having a predetermined level difference in the tightening direction of the tapping bolt 4, and an inclined portion connecting the flat portions 21 and 22 obliquely. 23, the reinforcing plate 20 is formed to have a relatively gentle crank shape (see FIG. 4) with a large bending angle. It has become so.

Each reinforcing plate 20 is held around the screw hole 19 by a resin holding member 26 which is divided into a pair of split pieces 24 and 25 as shown in FIGS. 5 to 8. By fitting holding grooves 27 and 28 for inserting and fixing the reinforcing plates 20 to the facing surfaces of the split pieces 24 and 25 and the split pieces 24 and 25, Engagement portions 29 and 30 that engage and connect are formed.

Each of the reinforcing plates 20 held by the holding member 26 has the tapping bolt 4 threaded through the screw hole 19 so that the receiving member 18 is perpendicular to the tapping bolt 4. At this time, the inclined portion 23 is arranged to form an inclined state along the direction of the screw thread seen from one side surface of the tapping bolt 4, and the side opposite to the wall surface 2 of the holding member 26 is pressed against the second surface portion 8. A pressing surface 31 is formed.

Here, the receiving member 18 formed by holding the respective reinforcing plates 20 by the holding member 26 is formed in a rectangular shape as a whole, and the mounting member 1 having a rectangular shape having a slightly larger external dimension than the receiving member 18 is formed. At least two sides (in the case of FIGS. 1 and 2, two sides not shown on the back side and front side opposite to the direction perpendicular to the drawing) are locked to the outer edge of the internal space 9 of the Thus, co-rotation of the receiving member 18 is prevented.

In the example shown here, a plurality of reinforcing plates 20 are collectively held by the holding member 26 from the viewpoint of improving the fixing strength when the mounting member 1 is mounted. At this time, each reinforcing plate 20 is arranged so as to be individually fitted into the screw groove of the tapping bolt 4 .

When the mounting member 1 is attached to the wall surface 2 by tightening the tapping bolt 4, the receiving member 18 accommodated in the internal space 9 of the mounting member 1 is locked against the outer edge of the internal space 9. Co-rotation is prevented by this, and the orientation perpendicular to the tapping bolt 4 is maintained. While forming a state of inclination along the direction of the thread, when viewed from the side opposite to 180°, it forms a state of inclination opposite to the direction of the thread, and when viewed from the intermediate side, it can be in either direction. It is designed to be in a non-tilting state.

As a result, the screw thread of the tapping bolt 4 meshes with the threaded hole 19 of the inclined portion 23 whose direction changes one after another for each rotational position of the tapping bolt 4 . If the tapping bolt 4 continues to be tightened even if a slight biting occurs between the and the tapping bolt 4, the direction of the inclined portion 23 changes in a direction that alleviates the biting, and as a result, the slight biting immediately disappears. It is possible to avoid occurrence of galling due to unraveling.

The operation thereafter is the same as before, and as the tapping bolt 4 is tightened against the wall surface 2, the receiving member 18 relatively moves toward the bolt head 13 of the tapping bolt 4, thereby The second surface portion 8 is clamped and held between the tapping bolt 4 and the tapping bolt 4, thereby regulating the tightening amount of the tapping bolt 4 and preventing excessive tightening.

Moreover, the receiving member 18 relieves the stress concentration due to the tightening of the tapping bolt 4 on the second surface portion 8, and the mounting member 1 itself is also pressed over a wide area of the first surface portion 7, so that the tapping can be achieved. Local stress does not act on the tightened portion of the bolt 4 either.

Therefore, according to the above-described embodiment, while adopting the receiving member 18 having a structure in which the reinforcing plate 20 is held by the holding member 26 at a low cost and with high productivity, the tapping bolt 4 can be smoothly tightened without galling. It is possible to achieve good attachment of the mounting member 1 to the wall surface 2 by tightening it tightly.

Especially in this embodiment, each reinforcing plate 20 can be easily inserted into the holding grooves 27 and 28 of the split pieces 24 and 25 and fixed by fitting the split pieces 24 and 25 together. The plate 20 can be held by the holding member 26, and the fitting of the split pieces 24 and 25 can be reliably held by the engagement connection of the engaging portions 29 and 30. As shown in FIG.

Furthermore, the reinforcing plate 20 as shown in this embodiment can be manufactured easily and at low cost by press working, and the cost of the receiving member 18 increases and the productivity decreases due to the improvement from the conventional structure. can be greatly suppressed.

In addition, in this embodiment, a plurality of reinforcing plates 20 are collectively held by the holding member 26 and arranged so that each reinforcing plate 20 is individually fitted into the screw groove of the tapping bolt 4. By simply increasing the number of reinforcing plates 20 in this manner, the fixing strength can be easily improved.

9 to 12 show another example of the holding member used in the present invention. In the example shown here, the holding member is made up of a rectangular single piece having an outer shape one size larger than the reinforcing plate 20. A member 26' (single piece is not given a new reference number because the holding member 26' is substantially the same as the single piece), and both sides of the holding member 26' are provided with the reinforcements. Fitting recesses 32 for fitting and fixing the plate 20 are formed respectively.

Here, the partition wall 33 dividing the front and back of the holding member 26' has a shape corresponding to the gentle crank-like bending of the reinforcing plate 20, and the holding member 26 holds. When the tapping bolt 4 is threaded through the screw hole 19 and the receiving member 18 is positioned perpendicular to the tapping bolt 4 , the inclined portion 23 of the reinforcing plate 20 is aligned with the tapping bolt 4 . The holding member 26' has a pressing surface 31' that presses against the second surface portion 8 on the outer periphery of the holding member 26' opposite the wall surface 2. formed in the shape of

Further, in the holding member 26', a hooking piece 34 is formed at the center of one side wall of each of the fitting recesses 32 facing each other in the direction in which the reinforcing plates 20 are bent in a crank shape. On the other hand, on both ends of the other side wall, hooking claws 35 are formed. By pushing it all the way into the hooking piece 34 while bending the It is adapted to be fixed to the partition wall 33 in a closely overlapping state (see especially FIGS. 11 and 12).

Two reinforcing plates 20 are fitted to the front and back of the holding member 26' from the viewpoint of improving the fixing strength in the state where the mounting member 1 is attached. The reinforcing plates 20 on the front and back sides are arranged so as to be individually fitted into the screw grooves of the tapping bolts 4.例文帳に追加

At the center of the partition wall 33 of the holding member 26', there is a through hole 36 for allowing the screw holes 19 of the reinforcing plates 20 to pass through each other. It is preferable that the through hole 36 is opened with a relatively larger diameter than the threaded hole 19 of each of the reinforcing plates 20 so as not to hinder good screwing of the thread of the tapping bolt 4 with respect to the reinforcing plate 20 .

By adopting such a holding member 26', the reinforcing plate 20 can be easily held by the holding member 26' simply by fitting the reinforcing plate 20 into the fitting recess 32. 26' can be constructed with only a single piece, and cost reduction can be achieved by reducing the number of parts.

However, after the holding member 26' is made of a soft resin, the through hole 36 is purposely opened with a relatively smaller diameter than the screwing hole 19 of each of the reinforcing plates 20, and the tapping bolt 4 is installed as described above. It is also possible to plastically deform the screwing hole 19 of each reinforcing plate 20 as if a female thread is carved into the screwing hole 19 and tighten the reinforcing plate 20 .

In this case, the tapping bolt 4 is tightly screwed into the through hole 36 of the partition wall 33 in the holding member 26' without any gap, so that the tapping bolt 4 engages the partition wall 33. An incidental effect is obtained that the water stopping performance at the penetrating portion is greatly enhanced.

The wall mounting unit of the present invention is not limited to the above-described embodiment, and the fastener is not necessarily limited to tapping bolts. For example, wood screws or the like may be used depending on the material of the wall surface. In addition, the number of reinforcing plates may be one, and various modifications may be made without departing from the scope of the present invention.

1 mounting member 2 wall surface 4 tapping bolt (fastener)
7 First surface portion 8 Second surface portion 9 Internal space 10 Insertion hole 11 Insertion hole 13 Bolt head (fastening head)
18 receiving member 19 screwing hole 20 reinforcing plate 21 flat portion 22 flat portion 23 inclined portion 24 split piece 25 split piece 26 holding member 26' holding member 27 holding groove 28 holding groove 29 engaging portion 30 engaging portion 31 pressing surface 31 ' Pressing surface 32 Fitting recess

Claims (5)

A wall-mounting unit in which a mounting member is attached to a wall surface by tightening it with fasteners, the wall-mounting unit having an internal space between a first surface portion on the wall surface side and a second surface portion on the opposite wall surface side of the mounting member, and An insertion hole is formed in each of the first surface portion and the second surface portion to allow the fastener to pass through the internal space in the tightening direction, and the fastener is inserted between the first surface portion and the second surface portion. The receiving member to be screwed through is accommodated in the internal space so as not to rotate together, and as the fastener is tightened against the wall surface, the receiving member moves relatively toward the fastening head side of the fastener. The reinforcing plate is configured such that the second surface portion is clamped and held between the fastening head and the receiving member has a screw hole having a smaller diameter than the thread of the fastener and a larger diameter than the thread groove. and the reinforcing plate is held by a holding member so that at least the periphery of the screw hole of the reinforcing plate forms an inclined state along the direction of the screw thread viewed from one side of the fastener, and the holding member A wall-mounting unit, characterized in that a pressing surface that presses against the second surface portion is formed on the side opposite to the wall surface of the wall-mounting unit. The holding member is divided into a pair of split pieces, and a holding groove for inserting and fixing a reinforcing plate is inserted into the opposing surfaces of the split pieces, and the split pieces are engaged and connected by fitting each other. 2. The wall-mounting unit according to claim 1, wherein an engaging portion is formed so as to connect with the wall-mounting unit. The holding member is composed of a single piece having an outer shape one size larger than that of the reinforcing plate, and a fitting recess for fitting and fixing the reinforcing plate is formed on at least one of the front and back surfaces of the single piece. The wall mounting unit according to claim 1. A reinforcing plate is formed in a crank shape by a pair of mutually parallel flat portions having a predetermined step with respect to the tightening direction of the fastener and an inclined portion connecting the flat portions obliquely, and is screwed into the inclined portions. 4. The wall mounting unit according to claim 1, 2 or 3, characterized in that it has holes. 5. The fastener according to claim 1, 2, 3 or 4, wherein a plurality of reinforcing plates are collectively held by the holding member and each reinforcing plate is arranged so as to be individually fitted into the screw groove of the fastener. Wall mounting unit as described.

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