JP2922382B2 - Joint cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint cover which is mounted in a gap between adjacent wall panels to close the gap.

[0002]

2. Description of the Related Art Conventionally, a joint cover has, for example, a practically-opened flat 2.
As disclosed in JP-A-58508 and JP-B-59-6986, a support leg inserted into a gap between adjacent wall panels and a relative position of the two wall panels from both side surfaces of the support leg. There is known a structure in which a pair of lip pieces that are protruded toward the end faces that come into contact with each other and are in contact with these end faces are fixed.

[0003]

As described above, in the joint cover having the support leg and the pair of lip pieces integrally, in order to enhance the sealing property and the holding force with respect to the gap between the wall panels, It is necessary to increase the projecting length of the pair of lip pieces from both side surfaces of the support leg and increase the thickness of these lip pieces to increase the resilience based on the elastic deformation of the pair of lip pieces. However, when the elasticity of the pair of lip pieces is increased as described above, it is difficult to fit the lip pieces into the gap between the adjacent wall panels while elastically deforming the lip pieces, thereby deteriorating the mountability.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to provide a joint cover which can enhance the sealing performance and the holding force while preventing deterioration of the mounting property in the gap between adjacent wall panels. That is.

[0005]

According to one aspect of the present invention, a support leg inserted into a gap between adjacent wall panels is provided. A joint cover protruding toward the opposite end faces of the panel and integrally including a pair of lip pieces in contact with these end faces, wherein at least a tip portion of the pair of lip pieces has a synthetic resin containing a foaming agent. After the legs are fitted into the gaps, the foaming agent of the pair of lip pieces is heated and foamed, so that the lips of the pair are expanded and the opposite end surfaces of the two wall panels are formed. It is configured to be in contact with the body. Further, according to the invention of claim 2, a metal wire for generating heat when a required current is supplied and causing the foaming agent of the pair of lip pieces to foam is inserted into the pair of lip pieces.

[0006]

In the joint cover according to the first aspect of the present invention, after the pair of lip pieces are fitted into the gap between the adjacent wall panels while being elastically deformed, the pair of lip pieces are foamed. The agent is heated and foamed, and these lip pieces are expanded. This increases the pressure of the lip piece against the end face of the adjacent wall panel. In the joint cover according to the second aspect, a current is applied to the metal wire inserted into the pair of lip pieces, and the wire generates heat, so that the foaming agent of the pair of lip pieces is efficiently heated and foamed. .

[0007]

【Example】

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. In FIG. 1 showing the joint cover in a perspective view and FIG.
Are a cover body 12, a support leg 16, and a pair of lip pieces 2.
1 and are integrally formed by extrusion of synthetic resin, rubber or the like.

The cover body 12 closes a gap S between the adjacent two wall panels 1, and a support leg 16 inserted into the gap S between the two wall panels 1 hangs at the center in the width direction on the back surface. It protrudes in a shape. The support leg 16 is made of a hard synthetic resin, and a metal core 17 made of a flat metal plate such as a stainless steel plate is inserted therein.

A pair of lip pieces 21 protrude toward the opposite end faces 2 of the two-wall panel 1 at the lower portions on both sides of the support leg 16. These pair of lip pieces 21 are formed of synthetic resin, rubber or the like containing a foaming agent,
Before the pair of lip pieces 21 are fitted into the gap S together with the support portion 16, the lip pieces 21 are in a non-foamed state (including a half-firing), and the protrusion length of both lip pieces 21 from both side surfaces of the support leg 16 and The wall thickness is set to the minimum necessary. That is, when the support leg 16 is fitted into the gap S while elastically deforming the lip piece 21, the two lip pieces are minimized to a degree that the joint cover 11 can be temporarily fixed by the elastic force of the lip piece 21. The protrusion length and wall thickness of 21 are set.

Further, in the first embodiment, as shown in FIG.
1, the cover body 12 is elastically deformed and pressed into contact with the cover body 12, so that the cover body 12 has an outer layer 13 made of a non-foamed soft synthetic resin and an inner layer 14 made of a synthetic resin / rubber or the like containing a foaming agent. Before mounting as shown in FIG. 3, the inner layer 14 is in an unfoamed state similarly to the two lip pieces 21, and the thickness thereof is set to a necessary minimum.

The pair of lips 21 and the cover body 12
A metal wire 22 is inserted into the inner layer 14 over the entire length of the joint cover 11. These wires 22
1, both end portions 22a and 22b are exposed by a predetermined length from both end surfaces in the longitudinal direction of the joint cover 11, and are exposed. And both ends 2 of each wire 22
A required voltage is applied to the wires 2a and 22b,
When a current is applied to the wire 2, each wire 22 generates heat,
The lip piece 2 is heated by heat energy based on the heat generation.
1 and the foaming agent of the inner layer 14 are foamed.
The inner layer 1 and the inner layer 14 are expanded as shown in FIG.

The first embodiment is configured as described above. Therefore, as shown in FIG. 3, before the joint cover 11 is attached to the gap S between the two wall panels 1, the lip piece 21 and the inner layer 14 of the cover body 12 are in an unfoamed state. For this reason, when the joint cover 11 is pushed with a relatively small pushing force into the gap S, the lip piece 21 and the cover body 12 are lightly elastically deformed, and as shown in FIG. The joint cover 11 is easily fitted to the position. And in this fitting position,
The joint cover 11 is temporarily fixed by a frictional force generated between each end of the lip piece 21 and the cover body 12 and the end face 2 of the wall panel 1.

Here, both ends 22a, 2a of each wire 22
A required voltage is applied to 2b. Then, a required current is applied to each wire 22, and thereby each wire 2
2 generates heat. Then, the foaming agent of the lip 21 and the inner layer 14 of the cover body 12 is foamed by thermal energy based on the heat generated by each wire 22. Then, as shown in FIG. 2, the lip 21 and the inner layer 14 are formed by the foaming action of the foaming agent.
Expands, and the tips of the lip piece 21 and the inner layer 14 strongly press against the end face 2 of the wall panel 1, thereby completing the mounting of the joint cover 11.

When the joint cover 11 is mounted as described above, the lip 21 and the inner layer 14 are strongly pressed against the end face 2 of the wall panel 1 due to the expansion of the lip 21 and the inner layer 4. Since the contact area is also increased, the sealing performance and the holding force are enhanced. For this reason, even if the gap S between the adjacent wall panels 1 varies, sufficient sealing performance and holding force can be obtained.

In the joint cover 11 according to the first embodiment, when the total length of the joint cover 11 is long, as shown in FIG.
Of the two wires 22, one end 22a of each of the two wires 22 may be connected, and a required voltage may be applied to the other end 22b to cause the wires 22 to conduct and generate heat.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described with reference to FIGS. In this embodiment, the main body of the cover body 112 and the support leg 116 forming the joint cover 111 has a metal core 117 having a substantially T-shaped cross section.
Is formed by The cover body 112 includes an upper side 117a of the core bar 117 and an outer covering layer 113 made of a synthetic resin and covering the upper side 117a.
In addition, the support leg 116 includes a vertical portion 117b of the core bar 117,
A lip 121, which covers both side surfaces of the vertical portion 117b, and a coating layer 118 made of the same material such as synthetic resin and rubber is used.

A pair of lip pieces 121 protrude downwardly on both sides of the support leg 116 toward the end face 2 of the two-wall panel 1, respectively. A locking portion 121a that engages with the rear corner of the end face 2 of the both wall panels 1 is formed in a notch shape.

The pair of lip pieces 121 are formed of a synthetic resin or rubber containing a foaming agent, and are provided in a gap S between the two wall panels 1 together with the support legs 16 as shown in FIG. Before the piece 121 is inserted,
It is in an unfoamed state as in Example 1,
The protrusion length and wall thickness of both lip pieces 121 from both side surfaces of No. 6 are set to minimum necessary.

That is, in the second embodiment, FIG.
As shown in FIG. 3, the support portion 16 is elastically deformed in the gap S between the two wall panels 1 until the rear surface of the cover body 112 contacts the outer surface of the both wall panels 1.
Is fitted to the back corner of the end surface 2 of the wall panel 1 with an engaging force enough to temporarily fix the joint cover 111 by the locking portion 121a of the lip 121. The protrusion length and wall thickness of 121 are set to the minimum required.

Further, metal wires 122 are inserted into the pair of lip pieces 121 in substantially the same manner as in the first embodiment, and both ends of these wires 122 are joined to the joint cover 1.
11 protrudes by a predetermined length from both end surfaces in the longitudinal direction and is exposed.

The joint cover 111 according to the second embodiment is configured as described above. Therefore, as shown in FIG.
Before the joint cover 111 is attached to the gap S between the two wall panels 1, the lip pieces 121 are in an unfoamed state. Therefore, when the joint cover 111 is pushed with a relatively small pushing force into the gap S, the lip piece 121 is lightly elastically deformed. As a result, the joint cover 111 is easily fitted to a predetermined position where the back surface of the cover body 112 is in contact with the outer surface of the wall panel 1. In this fitting position, the engaging portion 112 at the tip of the lip piece 121 is located.
a engages with the rear corner of the end face 2 of the wall panel 1,
The joint cover 111 is temporarily fixed.

Here, a required voltage is applied to both ends of each wire 122. Then, the foaming agent of the lip piece 121 is foamed by thermal energy based on the heat generated by the electric current flowing through each wire 122, and the lip piece 121 is foamed by the foaming action.
Expands, and these lip pieces 121 are attached to the end face 2 of the wall panel 1.
Strongly presses and engages the rear corner of the joint, thereby completing the mounting of the joint cover 111.

Therefore, also in the second embodiment, the sealing property and the holding force are enhanced, and even if the gap S between the adjacent wall panels 1 varies, the sealing property and the holding force can be sufficiently obtained. .

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. The third embodiment is a modification of the first embodiment. That is, as shown in FIGS. 9 to 11, a pair of lip pieces 21 protruding from the lower portions on both sides of the support leg 16 toward the opposite end faces of the two-wall panel 1 are two layers of an outer layer 21A and an inner layer 21B. Formed into a structure.

The outer layer 21A of the pair of lip pieces 21 is formed of a non-foamed soft synthetic resin or rubber, while the inner layer 21B is formed of a synthetic resin or rubber containing a foaming agent. The metal wire 22 is located near the tip.
Is inserted.

The cover body 12 is made of a non-foamed soft synthetic resin or rubber of the same material as the outer layer 21A of the lip piece 21 without inserting a metal wire.
The other parts are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof will be omitted.

(Embodiment 4) Next, Embodiment 4 of the present invention will be described with reference to FIGS. The fourth embodiment is a modification of the third embodiment. That is, FIG.
As shown in FIG. 14, the tip portion 2 of the pair of lip pieces 21
Only 1C is made of a synthetic resin or rubber containing a foaming agent, and other than the tip portion 21C of the lip piece 21 is made of a non-foamed soft synthetic resin or rubber. Further, a metal wire 22 is inserted into the center of the tip portion 21C of the pair of lip pieces 21. Other parts are Example 3.
Therefore, the same reference numerals are given to the same portions and the description thereof is omitted.

Embodiment 5 Next, Embodiment 5 of the present invention will be described with reference to FIGS. The fifth embodiment is a modification of the second embodiment. That is, FIG.
As shown in FIG. 17, only the tip portions 121A of the pair of lip pieces 121 are formed of a synthetic resin or rubber containing a foaming agent, and the other portions than the tip portions of the lip pieces 121 are non-foamed soft synthetic resin. It is formed from rubber or the like. Further, a metal wire 1 is attached to the tip portion 121A of the lip piece 121.
22 are inserted. Other parts are the same as those of the second embodiment
Therefore, the same reference numerals are given to the same portions and the description thereof is omitted.

In the first to fifth embodiments,
The foaming agent contained in the lip piece was heated and foamed based on the current generated by the metal wire inserted into the pair of lip pieces.However, the present invention is not limited to this. The blowing agent contained in the lip pieces may be blown by blowing hot air from the lip.

[0030]

As described above, according to the first aspect of the present invention, after the pair of lip pieces are fitted into the gap between the adjacent wall panels while being elastically deformed, the pair of lip pieces are inserted. By expanding the foam, the pressing force of the lip piece against the end face of the adjacent wall panel can be increased. For this reason, it is possible to enhance the sealing performance and the holding force while preventing the mounting property from being deteriorated in the gap between the adjacent wall panels. According to the second aspect of the present invention, the pair of lip pieces can be efficiently heated and foamed and expanded based on the heat energy of the energized heat generated by the metal wire inserted into the pair of lip pieces, Poor foaming can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a joint cover according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view showing a state where a joint cover is mounted between both wall panels.

FIG. 3 is a cross-sectional view showing a state before the joint cover is inserted between both wall panels.

FIG. 4 is a cross-sectional view showing a state in which the joint cover is inserted into a predetermined position between both wall panels.

FIG. 5 is a perspective view showing a state where one end of each wire of the joint cover is connected.

FIG. 6 is a cross-sectional view showing a state in which a joint cover according to Embodiment 2 of the present invention is mounted between both wall panels.

FIG. 7 is a cross-sectional view showing a state before the joint cover is inserted between both wall panels.

FIG. 8 is a cross-sectional view showing a state where the joint cover is fitted to a predetermined position between both wall panels.

FIG. 9 is a sectional view showing a joint cover according to a third embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a state where the joint cover is fitted to a predetermined position between both wall panels.

FIG. 11 is a cross-sectional view showing a state where the joint cover is mounted between both wall panels.

FIG. 12 is a sectional view showing a joint cover according to a fourth embodiment of the present invention.

FIG. 13 is a cross-sectional view showing a state in which the joint cover is inserted to a predetermined position between both wall panels.

FIG. 14 is a cross-sectional view showing a state where the joint cover is mounted between both wall panels.

FIG. 15 is a sectional view showing a joint cover according to a fifth embodiment of the present invention.

FIG. 16 is a cross-sectional view showing a state where the joint cover is fitted to a predetermined position between both wall panels.

FIG. 17 is a cross-sectional view showing a state where the joint cover is mounted between both wall panels.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall panel 2 End surface 11,111 Joint cover 16,116 Support leg 21,121 Lip piece 22,122 Wire

Claims (2)

(57) [Claims] 1. A support leg inserted into a gap between adjacent wall panels, and a pair of lip pieces protruding from both side surfaces of the support leg toward opposite end surfaces of the both wall panels and contacting these end surfaces. And a joint cover integrally provided with at least a tip portion of the pair of lip pieces is made of synthetic resin, rubber, or the like containing a foaming agent, and after the legs are fitted into the gap, The joint cover is characterized in that the pair of lip pieces are expanded by heating and foaming, so that the pair of lips are expanded and elastically contact the opposite end faces of the both wall panels. 2. The joint cover according to claim 1, wherein a metal wire that generates heat when a required current is supplied and generates a foaming agent for the pair of lip pieces is inserted into the pair of lip pieces. Joint cover featured.