JP3122838B2 - Joint material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a joint material which is inserted into a joint groove and closes the joint groove.

[0002]

2. Description of the Related Art Conventionally, a joint material is inserted into a joint groove (there is an insertion type and a joint type) and serves to close the joint groove. An example is the joint material shown in FIG.

[0003]

If the joint groove width is appropriate as shown in FIG. 10 (a), the conventional joint material 100 can fulfill the original sealing function, but as shown in FIG. 10 (b). If the width of the joint groove is too large, a gap is formed between the seal piece 102 and the lip piece 104, and the joint groove cannot be completely closed. In addition, there is also an inconvenience that dust, water and the like accumulate in the gap. On the other hand, if the joint groove width is too narrow as shown in FIG. 10C, the seal piece 102 and the lip piece 104 overlap and cannot be inserted into the joint groove. Therefore,
The joint groove width is limited. Then, if this is forcibly inserted, a problem occurs that the joint material 100 is abnormally deformed. FIG. 10D shows the joint material 200 of the joint type, but shows that the right side of the lip piece 204 is forcibly deformed by the panel P.

[0004]

SUMMARY OF THE INVENTION The present invention comprises a main body, a pair of lip pieces extending from the upper end of the main body so as to form a substantially T-shape with the main body, and In a joint material having at least a pair of seal pieces projecting obliquely upward and leftward in a substantially symmetrical manner, both ends of the lip piece are more easily deformed than a base of the lip piece, and when inserted into a joint groove, the lip piece Both ends of
The seal piece is elastically deformed and the seal piece is
The above-mentioned problem has been solved by a configuration in which the structure is brought into pressure contact with the wall of the trench .

[0005]

In the joint material of the present invention, since both ends of the lip are more easily deformed than the base of the lip,
Even if the width of the joint groove fluctuates to some extent, it is absorbed by the elastic deformation of both ends of the lip piece, and the joint groove can be reliably closed. In addition, the sealing piece is pressed against the wall of the joint groove by the elastic repulsive force due to the elastic deformation of both ends of the lip piece, and the sealing effect is also increased. In this specification, terms indicating a positional relationship such as “up and down” and “left and right” are used with reference to a standard mounting state as shown in FIG. Since the joint material of the present invention has a substantially symmetrical shape, the "base" of the lip piece is closer to the center than both ends of the lip piece.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
An embodiment of the present invention will be described. In FIG.
0 indicates a joint material according to the first embodiment of the present invention.

The joint material 10 is composed of a central body 18, a pair of seal pieces 12, 1 extending obliquely upward from the lower end of the body.
2. From the upper end of the main body 18 left and right, approximately T
It comprises a lip piece 14 extending in a letter shape. The material is made of an elastic material such as rubber or plastic. Both ends 16, 16 of the lip piece 14 are
The base 4 is made of a sponge material to make it easier to deform. When inserted into the joint groove as shown in FIG. 1 (b), the seal pieces 12, 12 are elastically deformed by the joint groove wall, and each seal piece 12 is an end 1 made of a sponge material.
6. Thus, the end 16 of the lip piece 14 pressed against each seal piece 12 is elastically deformed inward. Due to the elastic repulsion generated by this elastic deformation, each seal piece 12 is pressed against the wall of the joint groove, and the sealing effect is also increased.

Next, FIG. 2 shows a joint member 20 according to a second embodiment of the present invention. The joint material 20 includes a central body 28, a pair of seal pieces 22, 22 extending diagonally upward from the lower end of the main body 28, and a lip extending substantially right and left from the upper end of the main body 28 so as to form a substantially T-shape with the main body 28. Piece 2
Consists of four. At both ends of the lip piece 24, a hollow portion 26,
26 are formed. This hollow portion 26 is formed by the lip piece 2
FIG. 1 is for facilitating the deformation of both ends of FIG.
Has the same function as the end portion 16 made of sponge material. Therefore, when the seal pieces 22 are inserted into the joint grooves as shown in FIG. 2B, the seal pieces 22 are elastically deformed by the joint groove walls, and each seal piece 22 is pressed against the end having the hollow portion 26. . The hollow portion 26 of the lip piece 24 pressed against each seal piece 22 is elastically deformed inward. Due to the elastic repulsion generated by this elastic deformation, each seal piece 2
2 is pressed against the wall of the joint groove to increase the sealing effect.

Next, FIG. 3 shows a joint member 30 according to a third embodiment of the present invention. The joint material 30 includes a central body 38, a pair of seal pieces 32, 32 extending diagonally upward from the lower end of the main body 38, and a lip extending substantially right and left from the upper end of the main body 38 so as to form a substantially T-shape with the main body 38. Piece 3
Consists of four. At both ends of the lip piece 34, thin downwardly extending portions 36, 36 are formed. This extension 36
Are provided for facilitating deformation of both ends of the lip piece 34. The end 16 made of a sponge material in FIG.
It functions similarly to the hollow part 26 in the case of FIG. Although the extension portion 36 is more likely to be deformed when it is made thinner than the base of the lip piece 34, it is not always necessary to make it thinner. Accordingly, when the seal pieces 32 are inserted into the joint grooves as shown in FIG. 3B, the seal pieces 32 are elastically deformed by the joint groove walls, and each seal piece 32 is pressed against the downwardly extending portion 36. The lip pieces 3 pressed against the respective seal pieces 32 in this manner.
4 downward extension 36 is elastically deformed so as to be rounded inward. Due to the elastic repulsion generated by the elastic deformation, each seal piece 32 is pressed against the joint groove wall, and the effect of sealing the joint groove is increased.

Although the joint material described above is integrally formed as a whole, the present invention is not limited to such a case. Joint material 40 of FIG. 4 showing a fourth embodiment of the present invention
Is a modified example of the joint material 10 of FIG. 1. In this case, the center main body 48 is separate from the seal piece 42,
The lower end of 8 is inserted into a box-shaped storage portion 49 integrally formed at the lower end of the seal piece 42 so as not to fall out, so that the integral shape is maintained as a whole. Therefore, in the claims, "a pair of seal pieces projecting obliquely upward from right to left and right from the main body below the lip piece" is intended to encompass such a case.

The joint material 40 also has a pair of sealing pieces 42, 4
2 and a lip piece 44, and both end portions 46, 46 of the lip piece 44 are formed of a sponge material as in the case of FIG. This sponge material 46 has the same function as the sponge material in FIG. FIG. 4B shows a state in which the joint material 40 is inserted into the joint groove. However, the sealing function is the same as that in FIG.

Next, FIGS. 5 and 6 show a further development of the joint material 20 of FIG. 2, and show fifth and sixth embodiments of the present invention.

First, in the joint material 50 shown in FIG. 5A, a metal core bar 55 for increasing rigidity is embedded in a central main body 58. And two pairs of sealing pieces 52a, 52a, 52b, 52b projecting so as to be substantially symmetrical, and furthermore, a hollow portion 5 for facilitating deformation of the lip piece 54.
The shapes of the protrusions 57 are slightly lower than the shapes of the protrusions 57. FIG. 5B shows a state in which the joint material 50 of FIG. 5A is put in the joint groove, but the seal pieces 52a and 52 are shown.
Due to a, 52b, and 52b, the pressure contact point with the joint groove becomes two upper and lower locations, and the sealing effect is increased.

Next, in the joint material 60 of FIG. 6A, a metal core 65 is embedded in a central main body 68 as in FIG. Are formed in two pairs of sealing pieces 62a, 62a, 62b, 62b projecting so as to be substantially symmetric on the left and right.
Further, the upper and lower seal pieces 62a and 62b on the same side are connected by a connection piece 61, and the upper seal piece 62a
Are separated at a position corresponding to a substantially middle position of the large hollow portion 66. In the claims, "a pair of seal pieces projecting diagonally upward and downward from the main body substantially symmetrically below the lip piece" is intended to include such an aspect. Since the upper and lower seal pieces 62a, 62b are thus connected by the connection piece 61, further hollow portions 63, 63 are formed on both sides. FIG. 6B shows a state in which the joint material 60 of FIG. 6A is inserted into the joint groove.
It can be seen that the pressure contact area between the a, 62b, 62b and the joint groove wall increases, and the sealing effect increases.

Finally, FIGS. 7 and 8 correspond to a further development of the joint material 30 of FIG. 3, and show seventh and eighth embodiments of the present invention.

The joint material 70 shown in FIG.
8 (which also constitutes the lower side of the base of the lip piece 74) is formed of a hard material to increase the rigidity, and the seal piece 72 is formed.
The a, 72b, the downward extension 76, and the lip piece 74 are formed of a soft material having elasticity. A metal core 75 is also embedded in the center body 78 of the joint member 70 in FIG. Two pairs of seal pieces 72a, 72a, 72b, 72b projecting from the main body 78 along the longitudinal direction so that the cross section becomes substantially symmetrical on the left and right, and upper and lower seal pieces 72a, 72b on the same side are formed. Are connected by a connecting piece 71. As shown in FIG. 7B, also in this case,
It can be seen that the pressure contact area between the seal pieces 62a, 62a, 62b, 62b and the wall of the joint groove increases, and the sealing effect increases.

Finally, the joint material 80 shown in FIG. 8A also has a metal core 85 buried in the central main body 88, and the cross section is substantially symmetrical in the longitudinal direction from the main body 88 along the longitudinal direction. Two pairs of sealing pieces 82a, 82
a, 82b, 82b are formed, and upper and lower seal pieces 82a, 82b on the same side are connected by a connecting piece 81.
The downward extension 86 of the joint material 80 has a base extending linearly obliquely downward and a tip extending further downward and inward therefrom. FIG. 8 (b) is the same as FIG.
8C shows a state in which the joint material 80 is present in a joint groove having a standard width, FIG. 8C shows a state in which the joint material 80 is present in a joint groove having a wider width, and FIG. Each state is shown in a joint groove having a narrower width. Even if the width of the joint groove fluctuates in this manner, the range that the joint material 80 can cope with is wide. FIG. 9 is a perspective view showing an actual use state of the joint material 80.

[0018]

As described above, in the joint material of the present invention, since the both ends of the lip piece pressed against the seal piece are more easily deformed than the base of the lip piece, the joint groove has a certain width. Even if it fluctuates to some extent, it is possible to cope with the elastic deformation of both ends of the lip piece, and it is possible to increase the sealing force by pressing the seal piece by the elastic repulsive force due to the elastic deformation.

And, as in the joint material of claim 5, two pairs of seal pieces are formed so as to project symmetrically from the main body,
When the upper and lower seal pieces on the same side are connected by a connection piece, a hollow portion is formed between the seal piece and the connection piece, so that especially when the joint groove width is narrow, the connection piece and the seal piece overlap and press contact. Has an effect of increasing the sealing effect.

[Brief description of the drawings]

FIGS. 1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is a cross-sectional view of a joint material, and FIG. 1B is a cross-sectional view of the joint material in a joint groove.

2A and 2B show a second embodiment of the present invention, wherein FIG. 2A is a cross-sectional view of a joint material, and FIG. 2B is a cross-sectional view of the joint material in a joint groove.

3A and 3B show a third embodiment of the present invention, wherein FIG. 3A is a cross-sectional view of a joint material, and FIG. 3B is a cross-sectional view of the joint material in a joint groove.

4A and 4B show a fourth embodiment of the present invention, wherein FIG. 4A is a cross-sectional view of a joint material, and FIG. 4B is a cross-sectional view of the joint material in a joint groove.

5A and 5B show a fifth embodiment of the present invention, wherein FIG. 5A is a cross-sectional view of a joint material, and FIG. 5B is a cross-sectional view of the joint material in a joint groove.

6A and 6B show a sixth embodiment of the present invention, in which FIG. 6A is a cross-sectional view of a joint material, and FIG. 6B is a cross-sectional view of the joint material in a joint groove.

7A and 7B show a seventh embodiment of the present invention, wherein FIG. 7A is a cross-sectional view of a joint material, and FIG. 7B is a cross-sectional view of the joint material in a joint groove.

8A and 8B show an eighth embodiment of the present invention, wherein FIG. 8A is a cross-sectional view of a joint material, FIG. 8B is a cross-sectional view of a joint existing in a normal joint groove, and FIG. FIG. 4D is a cross-sectional view in a state where the joint groove is present in a wide joint groove, and FIG.

FIG. 9 is a perspective view showing a use state of the joint material of the present invention.

FIG. 10 is a cross-sectional view showing a use state of a conventional joint material;
(A) when the joint material is in a joint groove of standard width, (b)
(C) shows the case where the joint is in the narrow joint groove, and (d) shows the case of the joint material of the joint type placed in the narrow joint groove.

[Explanation of symbols]

10, 20, 30, 40, 50, 60, 70, 80: Joint material 18, 28, 38, 48, 58, 68, 78, 88: Main body 12, 22, 32, 42: Sealing piece 52a, 62a, 72a , 82a: seal pieces 52b, 62b, 72b, 82b: seal pieces 14, 24, 34, 44, 54, 64, 74, 84: lip pieces 16, 46: end portions made of sponge material 26, 56, 66: hollow Part 36, 76, 86: downward extension

Claims (5)

(57) [Claims] 1. A main body, a pair of lip pieces extending from the upper end of the main body so as to form a substantially T-shape with the main body, and projecting obliquely upward and downward from the main body substantially symmetrically below the lip pieces. in joint fillers having at least a pair of seal pieces, the both end portions of the lip piece and easily deformed than the base of the lip piece, when inserted into the eye graben, both end portions of the lip piece the
The sealing piece is elastically deformed by the sealing piece and the sealing piece is
A joint material characterized by being pressed against a wall of a joint. 2. The joint material according to claim 1, wherein both end portions of said lip piece are formed of a sponge material. 3. Both ends of the lip are hollow.
The joint material according to claim 1. 4. The joint material according to claim 1, wherein both end portions of said lip piece are downwardly extending portions. Wherein said sealing strip is vertically 2 paired, two sealing strips on the same side are connected by a connecting piece, one of joint compound of claims 1 4.