JP7027213B2 - Joined structure and fittings - Google Patents

Description

The present invention relates to a joining structure and a fitting for joining a longitudinal end face of a profile to a joining surface of another member via a sheet-shaped sealing material.

As a joining structure for joining the end face in the longitudinal direction of the profile to the joining surface of other members via a sheet-shaped sealing material, for example, a fitting is formed, and the upper frame, the lower frame, and the left and right vertical frames are wrapped around four times. A joining structure is known in which an end face in the longitudinal direction of a lower frame of a frame body forming a window frame configured as a framework is joined to a joining surface of a vertical frame (see, for example, Patent Document 1). In this joint structure, a sheet-shaped sealing material is interposed between the end surface of the lower frame and the joint surface of the vertical frame, and a screw is inserted into a screw hole formed in the joint surface of the vertical frame to form a screw hole in the lower frame. When a screw is screwed into the portion, the sealing material is compressed and sandwiched between the waterproof line forming portion formed on the end surface of the lower frame and the joint surface of the vertical frame to form a waterproof line, and the lower frame and the vertical frame are formed. It is joined to the frame. At this time, the joint surface of the vertical frame abuts on the lower frame at a position where the end surface of the screw hole portion does not overlap with the water stop line, and the clearance dimension between the vertical frame and the lower frame in which the sealing material is interposed is determined. A protrusion for setting the dimensions is provided.

Japanese Unexamined Patent Publication No. 2013-117143

In the above joint structure, the joint surface of the vertical frame is provided with a protrusion for setting the clearance dimension between the vertical frame and the lower frame to a predetermined dimension, but the tightening force of the screw screwed into the screw hole portion of the lower frame is provided. Is left to the operator, so there is a risk of variation. Therefore, when the tightening force is weak, the amount of compression of the sealing material becomes small and the water blocking performance becomes low, and when the tightening force is strong, the protrusions are crushed and the intervening sealing material is damaged. There is a risk that the water blocking performance will deteriorate due to this.

Further, even if the vertical frame and the lower frame are joined by an appropriate tightening force, the lower frame made of a long profile is stretched by heat, so that the stretched lower frame is fixed to the skeleton or the like. The vertical frame will be pressed with a stronger force, and as a result, the intervening sealing material may be torn, resulting in a decrease in water stopping performance.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a joint structure and fittings having excellent water blocking performance.

In order to achieve such an object, the joint structure of the present invention is a joint structure in which the end face in the longitudinal direction of the profile is joined to the junction surface of another member via a sheet-shaped sealing material, and the profile is a joint structure. A screw-screwed portion into which a screw entering along the longitudinal direction is screwed, and a waterproof line forming portion abutting on the sealing material to form a waterproof line, and the other member. The joint surface has an insertion hole through which a screw screwed into the screw threaded portion is inserted, and a position different from that of the water stop line formed in one of the profile and the other member. A protrusion protruding from the other side of the profile and the other member is provided, and the screw is smaller than the outer diameter of the head and is smaller than the outer diameter of the head between the head and the screw portion. It has a stepped portion having an outer diameter larger than the outer diameter of the portion, the length of the stepped portion is L, the thickness of the portion forming the joint surface of the other member is t1, the protrusion amount of the protrusion is H, and the seal. The joining structure is characterized in that the relationship of the following equations (1) to (3) is satisfied when the thickness of the material is t2, the inner diameter of the insertion hole is D1, and the outer diameter of the step portion is D2. t1 <L ≦ t1 + H ... (1), L <t1 + t2 ... (2), D2 <D1 ... (3)

According to such a joining structure, the length L of the step portion of the screw is equal to or less than the thickness t1 of the portion forming the joining surface of the other member plus the protrusion amount H of the protrusion, so that the screw is securely tightened. When the protrusion protrudes from the step portion, it is possible to crush the protruding portion of the protrusion so that the tip of the step portion and the tip of the protrusion are flush with each other. At this time, since the inner diameter D1 of the insertion hole is larger than the outer diameter D2 of the step portion, the step portion can be inserted into the insertion hole.

Further, the thickness obtained by adding the thickness t1 of the portion forming the joint surface of the other member and the thickness t2 of the sealing material is thicker than the length L of the step portion, and the length L of the step portion is the joint surface of the other member. Since the thickness of the portion to be formed is longer than t1, it is possible to surely provide a gap between the end surface of the profile and the joint surface of another member even if the screw is securely tightened. Therefore, even if the operator securely tightens the screw, the protrusion is not crushed and the sealing material is not torn, so that high water stopping performance can be ensured. Further, even if the profile is stretched by heat, a gap between the end surface of the profile and the joint surface of another member is secured, so that high water stopping performance can be maintained. Therefore, it is possible to provide a joint structure having excellent water blocking performance.

The bonding structure is characterized in that the sealing material has a through hole through which the screw penetrates, and the inner diameter of the through hole is smaller than the outer diameter of the step portion and larger than the outer diameter of the screw portion. And.

According to such a joining structure, the inner diameter of the through hole of the sealing material is larger than the outer diameter of the threaded portion, so that the threaded portion can be inserted without damaging the sealing material, which is larger than the outer diameter of the stepped portion. Since it is small, it is possible to interpose a sealing material between the step portion and the protrusion and the joint surface. Therefore, when the sealing material is crushed when the screw is tightened, the sealing material is interposed between the step portion and the protrusion and the joint surface without a gap. Further, when the sealing material is extruded outward from between the step portion and the protrusion and the joint surface, the sealing material around the step portion and the protrusion becomes thicker. Therefore, it is possible to further improve the water blocking performance.

The joint structure is characterized in that a counterbore larger than the outer diameter of the head of the screw is provided on the side opposite to the joint surface of the other member.
According to such a joining structure, the thickness of the portion sandwiched by the screw can be adjusted at the portion forming the joining surface of the other member by the counterbore provided on the side opposite to the joining surface of the other member. , It is not necessary to use screws with different step lengths. That is, since other members having different thicknesses can be joined with one kind of screw, the operator can work without hesitation, and the screw can be easily managed.

Further, it is possible to provide a fitting provided with a frame body which is joined by the above-mentioned joining structure and has excellent water blocking performance.

According to the present invention, it is possible to provide a joint structure and fittings having excellent water blocking performance.

It is a perspective view which shows the joint structure which concerns on this embodiment. It is an exploded perspective view which shows the structure of the joint structure which concerns on this embodiment. It is a schematic diagram which shows the cross section of the joint structure which concerns on this embodiment. It is the figure which looked at the joint part joined by the joining structure from the longitudinal direction of the lower frame. It is a schematic diagram which shows the cross section of the modification of the joint structure which concerns on this embodiment.

Hereinafter, a joining structure according to an embodiment of the present invention and a fitting provided with a frame joined by this joining structure will be described with reference to the drawings.

In the present embodiment, a bathroom fitting provided at the entrance / exit of the bathroom and provided with a frame body for supporting a folding door (not shown) is taken as an example, and an upper frame, a lower frame, and left and right vertical frames made of extruded aluminum are used as an example. The joining structure of the present invention will be described with reference to a joining portion between a lower frame as a profile and a vertical frame as another member of a frame body having a four-circle frame.

In the following explanation, when the frame is attached to the building and viewed from the bathroom side, the vertical direction is the vertical direction, the horizontal direction is the horizontal direction, and the indoor / outdoor direction is the prospective direction. Shown as. Further, the vertical frame will be described with the side facing each other in the left and right vertical frames as the inside and the opposite side as the outside in a state of being framed in a rectangular shape.

As shown in FIGS. 1 and 2, the lower frame 1 and the right vertical frame (hereinafter, simply referred to as the vertical frame) 2 constituting the frame body 10 are the joint surfaces of the right end surface 1a and the vertical frame 2 of the lower frame 1. It is joined by a screw 4 to and from the inner side surface 2a as a sheet via a sheet-shaped sealing material 3.

As shown in FIGS. 2 and 3, the screw 4 is a columnar column having an outer diameter D2 between the screw portion 4a and the head portion 4b, which is larger than the outer diameter of the screw portion 4a and smaller than the outer diameter of the head portion 4b. This is a stepped screw 4 provided with a stepped portion 4c. The length L of the step portion 4c is longer than the thickness t1 of the prospective wall portion 2b along the prospective direction of the vertical frame 2, and is more than the thickness t1 + t2 obtained by adding the thickness t1 of the prospective wall portion 2b and the thickness t2 of the sealing material 3. It is formed long.

The lower frame 1 is provided with a hollow portion 1b penetrating in the longitudinal direction, and is fitted with a rail 1c through which a folding door is guided and a water blocking member (not shown) which is recessed downward on the dressing chamber side of the rail 1c. The lower frame surface portion 1e provided with the fitting groove 1d, the hollow portion forming portion 1f forming the hollow portion 1b together with the lower frame surface portion 1e under the lower frame surface portion 1e, and the lower frame surface portion 1e. It has a hanging wall portion 1 g hung from the edge on the bathroom side and two screwed portions 1h.

The fitting groove 1d is located above the hollow portion forming portion 1f and is provided so as to be recessed from the lower frame surface portion 1e to the hollow portion 1b side, and is provided below the bottom portion 1i of the fitting groove 1d, that is, in the hollow portion 1b. Is provided with one screw-screwed portion 1h, and the other screw-screwed portion 1h is provided in the vicinity of the hanging wall portion 1g of the lower frame surface portion 1e.

The two screw-threaded portions 1h have the bathroom-side portion of the bottom portion 1i or the lower frame surface portion 1e as the base end portion, and the two extension pieces 1j are extended downward with a gap from each other in the prospective direction. have. The two extension pieces 1j form an arc shape that bulges and curves in the direction opposite to each other in the prospective direction, and the tips are spaced apart from each other.

The vertical frame 2 has a prospective wall portion 2b that forms a joint surface with the lower frame 1 and is along the prospective direction. Two facing pieces 2c and two insertion holes 2d into which a stepped screw 4 for joining the lower frame 1 is inserted are provided at the lower end portion. The inner diameter D1 of the insertion hole 2d is formed to be slightly larger than the outer diameter D2 of the stepped portion 4c of the stepped screw 4.

Further, on the edge of each insertion hole 2d, protrusions 2e are provided on both sides in the prospective direction so as to project inward. The protrusions 2e are provided so as to be vertically distributed around a horizontal line passing through the center of the insertion hole 2d, and when the stepped screw 4 is tightened, the protrusion 2e and the two extension pieces 1j of the screw threaded portion 1h are provided. It is provided at a position facing the lower frame surface portion 1e including the bottom portion 1i and not facing the lower frame surface portion 1e. The insertion hole 2d and the protrusion 2e are simultaneously formed by press working using a die having a punched portion for forming the insertion hole 2d and a protruding portion for forming the protrusion 2e in the die.

The thickness from the outer surface of the prospective wall portion 2b of the vertical frame 2 to the tip of the protrusion 2e, that is, the thickness t1 + H obtained by adding the thickness t1 of the prospective wall portion 2b and the protrusion height H of the protrusion 2e is the stepped screw 4 It is formed to be slightly thicker than the length L of the step portion 4c.

The sealing material 3 has a sheet shape and is made of a soft member such as butyl rubber. The sealing material 3 has a larger shape over the entire circumference than the contoured edge of the end surface 1a in the lower frame 1 in which the water blocking member is fitted in the fitting groove 1d. Further, the sealing material 3 is stepped so as to be aligned with the screw threaded portion 1h and the insertion hole 2d when interposed between the end surface 1a of the lower frame 1 and the prospective wall portion 2b of the vertical frame 2. A through hole 3a through which the attached screw 4 is passed is provided. The inner diameter D3 of the through hole 3a is formed to be slightly larger than the outer diameter D2 of the step portion 4c of the stepped screw 4 as in the insertion hole 2d. Further, the thickness t2 of the sealing material 3 is formed to be thicker than the protruding height H of the protrusion 2e provided on the prospective wall portion 2b of the vertical frame 2.

When joining the lower frame 1 and the vertical frame 2, first, the sealing material 3 is attached to the inner side surface 2a of the prospective wall portion 2b of the vertical frame 2. At this time, the positions of the insertion hole 2d of the prospective wall portion 2b and the through hole 3a of the sealing material 3 are aligned.

Next, the screw screwed portion 1h of the lower frame 1 is aligned with the through hole 3a of the sealing material 3 and the end surface 1a of the lower frame 1 is brought into contact with the sealing material 3, and the step is stepped from the outside to the inside of the prospective wall portion 2b. The attached screw 4 is inserted into the insertion hole 2d and the through hole 3a and screwed into the screw threaded portion 1h. At this time, before tightening the stepped screw 4, the protrusion 2e of the vertical frame 2 is in contact with the extension piece 1j of the screw threaded portion 1h of the lower frame 1, and the stepped screw 4 is tightened. As a result, the tip of the protrusion 2e is crushed, and the step portion 4c of the stepped screw 4 is brought into contact with the screw threaded portion 1h. At this time, the step portion 4c is not in contact with the lower frame surface portion 1e.

In the state where the stepped screw 4 is tightened, the sealing material 3 is compressed between the end surface 1a of the stepped portion 4c and the lower frame 1 and the inner side surface 2a of the prospective wall portion 2b. At this time, the sealing material 3 located between the protrusion 2e and the extension piece 1j is compressed into an extremely thin state, or the protrusion 2e and the extension piece 1j are formed between the protrusion 2e and the extension piece 1j. Is pushed out to a position where it does not face. In the state where the stepped screw 4 is tightened, as shown by the thick line in FIG. 4, the portion where the sealing material 3 is compressed by the lower frame surface portion 1e including the portion forming the fitting groove 1d is stopped. It forms a water line S. That is, the lower frame surface portion 1e corresponds to the water stop line forming portion.

According to the joining structure of the present embodiment, the length L of the stepped portion 4c of the stepped screw 4 determines the thickness t1 of the prospective wall portion 2b and the protrusion amount H of the protrusion 2e as a portion forming the joining surface of the vertical frame 2. Since it is shorter than the added thickness, by securely tightening the stepped screw 4, the portion of the protrusion 2e protruding from the step portion 4c is crushed so that the tip of the step portion 4c and the tip of the protrusion 2e are on the same surface. It is possible to do. At this time, since the inner diameter D1 of the insertion hole 2d is larger than the outer diameter D2 of the step portion 4c, the step portion 4c can be inserted into the insertion hole 2d, and the step portion 4c abuts on the end surface 1a of the lower frame 1. It is possible to make it.

Further, the thickness t1 + t2 including the thickness t1 of the prospective wall portion 2b of the vertical frame 2 and the thickness t2 of the sealing material 3 is thicker than the length L of the step portion 4c, and the length L of the step portion 4c is the prospective wall portion 2b. Since the thickness is longer than t1, even if the stepped screw 4 is securely tightened, it is possible to surely provide a gap between the end surface 1a of the lower frame 1 and the prospective wall portion 2b of the vertical frame 2. Therefore, even if the operator tightens the stepped screw 4 with a strong force, the protrusion 2e is completely crushed, and the seal is sealed between the end surface 1a of the lower frame 1 and the prospective wall portion 2b. Since the material 3 is torn, it is possible to ensure high water stopping performance.

Further, even if the lower frame 1 is stretched by heat, a gap between the end surface 1a of the lower frame 1 and the prospective wall portion 2b of the vertical frame 2 is secured, so that high water stopping performance can be maintained. be. Therefore, it is possible to provide a joint structure having excellent water blocking performance.

In the above embodiment, an example in which the inner diameter D3 of the through hole 3a of the sealing material 3 is formed larger than the outer diameter D2 of the step portion 4c has been described, but the inner diameter D3 of the through hole 3a is outside the threaded portion 4a. It may be formed to be larger than the diameter and smaller than the outer diameter D2 of the step portion 4c. In this case, the threaded portion 4a of the stepped screw 4 can be inserted without damaging the sealing material 3, and the sealing material 3 can be interposed between the stepped portion 4c and the prospective wall portion 2b. .. Therefore, when the sealing material 3 is crushed when the stepped screw 4 is tightened, the sealing material 3 is interposed between the stepped portion 4c and the protrusion 2e and the prospective wall portion 2b without a gap. Further, when the sealing material 3 is extruded outward from between the step portion 4c and the prospective wall portion 2b, the sealing material 3 around the step portion 4c becomes thicker. Therefore, it is possible to further improve the water blocking performance.

Further, as shown in FIG. 5, assuming that the vertical frame 2 is provided with a counterbore 2f larger than the outer diameter of the head portion 4b of the stepped screw 4 on the side opposite to the inner side surface 2a of the prospective wall portion 2b, the prospective wall is provided. By adjusting the depth of the counterbore 2f according to the thickness of the portion 2b, even if there are a plurality of types of vertical frames having different thicknesses of the prospective wall portions 2b, a single type having the same length of the step portion 4c. It can be joined to the lower frame 1 with the stepped screw 4. Therefore, the operator can perform the construction without hesitation about the type of screw, and the stepped screw 4 can be easily managed.

In the above embodiment, an example in which the length L of the step portion 4c of the stepped screw 4 is shorter than the thickness obtained by adding the thickness t1 of the prospective wall portion 2b and the protrusion amount H of the protrusion 2e has been described, but the step portion 4c has been described. The length L of the above, the thickness t1 of the prospective wall portion 2b, and the thickness obtained by adding the protrusion amount H of the protrusion 2e are equal, and the tip of the step portion 4c and the tip of the protrusion 2e may be flush with each other. ..

In the above embodiment, an example in which the protrusion 2e is provided on the vertical frame 2 side has been described, but the present invention is not limited to this, and for example, the threaded portion on the profile side such as the lower frame 1 is separated from the water stop line forming portion. It may be formed in a vertical position.

Further, it is also possible to provide a fitting provided with a frame body 10 which is joined by the above-mentioned joining structure and has excellent water blocking performance.

In the above embodiment, an example in which the joint structure according to the present invention is applied to the joint portion between the lower frame 1 and the vertical frame 2 of the frame body 10 provided in the bathroom fittings has been described, but the present invention is not limited thereto. .. For example, the fittings do not have to be for the bathroom. Further, for example, a joint portion between the upper frame and the vertical frame, a joint portion between the vertical stile and the horizontal stile, and other members in contact with the end face of the profile material are placed in the longitudinal direction of the profile material. Any joint may be used as long as it is a joint to be joined by an entering screw.

Further, the above-described embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof, and the present invention includes an equivalent thereof.

1 Lower frame, 1a end face, 1e lower frame surface part, 1h screw threaded part, 1i bottom part,
2 Vertical frame, 2a inner surface, 2d insertion hole, 2e protrusion, 2f counterbore,
3 Sealing material, 3a through hole, 4 stepped screw (screw), 4a thread part,
4b head, 4c step, 10 frame,
Inner diameter of D1 insertion hole, outer diameter of D2 step, protrusion amount of H protrusion, length of L step,
S water stop line, t1 expected wall thickness, t2 sealing material thickness,

Claims (4)

It is a joining structure in which the end face in the longitudinal direction of the profile is joined to the joining surface of another member via a sheet-shaped sealing material.
The profile has a screw threaded portion into which a screw entering along the longitudinal direction is screwed.
It has a water stop line forming portion that is in contact with the sealing material to form a water stop line.
The joint surface of the other member has an insertion hole through which the screw screwed into the screw screw portion is inserted.
One of the profile and the other member is provided with a protrusion protruding to the other side of the profile and the other member at a position different from the formed water stop line. ,
The screw has a step portion between the head and the screw portion having an outer diameter smaller than the outer diameter of the head and larger than the outer diameter of the screw portion.
The length of the step portion is L, the thickness of the portion forming the joint surface of the other member is t1, the protrusion amount of the protrusion is H, the thickness of the sealing material is t2, the inner diameter of the insertion hole is D1, and the above. When the outer diameter of the step is D2, the relationship of the following equations (1) to (3) is satisfied.
t1 <L ≦ t1 + H ・ ・ ・ (1)
L <t1 + t2 ... (2)
D2 <D1 ... (3)
The sealing material has a joint structure having a portion interposed between the protrusion and the joint surface . The joint structure according to claim 1.
The sealing material has a through hole through which the screw penetrates.
A joining structure characterized in that the inner diameter of the through hole is smaller than the outer diameter of the step portion and larger than the outer diameter of the threaded portion. The joint structure according to claim 1 or 2.
A joint structure characterized in that a counterbore larger than the outer diameter of the head of the screw is provided on the side opposite to the joint surface of the other member. A fitting having a frame joined by the joining structure according to any one of claims 1 to 3.

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