JP2932460B2 - Eave gutter expansion joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eaves gutter expansion joint, and more particularly to an eaves gutter expansion joint which smoothly absorbs expansion and contraction of an eaves gutter caused by a temperature difference between a temperature and a temperature and eliminates water leakage.

[0002]

2. Description of the Related Art Conventionally, as shown in the side sectional view of FIG. 5, for example, a joint body A having an eaves gutter connecting portion 41 on one end side is provided on the other end side inner surface with a packing C on the other end side. In the expansion joint for gutters, which is slidably fitted with a sliding body B having an eaves gutter joint 42, the packing C has joints at both ends, and one end side joint 43 is a joint body. A gutter expansion joint is disclosed, characterized in that it is a bellows-like packing C which is joined to the inner surface of A in a watertight manner, while the other end side joint portion 44 is joined to the outer surface of the sliding body B in a watertight manner. ing. (Japanese Utility Model Laid-open No. 7-29157)

[0003] However, the above-mentioned expansion joint for gutters is provided with joints 43 and 44 provided at both ends of the bellows-like packing C.
Is joined to the joint body A and the sliding body B in a water-tight manner, so that outflow of water is prevented, and since the bellows-like packing C is shielded by the joint body A and the sliding body B, Although it is possible to prevent the deterioration of the expansion and contraction function due to deterioration due to sunlight such as ultraviolet rays, the absorption of expansion and contraction due to the temperature difference between the eaves gutter and the bellows-like packing C on only one inner surface of the joint body A
However, since the sliding body B to which is joined is fitted, there is a problem that the sliding balance is poor and it is difficult to smoothly absorb the expansion and contraction of the eaves gutter.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its gist is to provide an outer joint and two inner joints slidably disposed inside the outer joint. In the eaves gutter expansion joint consisting of, the cover plates provided on the two inner joints are arranged to face each other, and both inner joints are connected to each other by bellows-like packing, and the bellows-like packing is
An eaves gutter expansion joint characterized in that the eaves gutter expansion joint is provided so as to be able to expand and contract between the cover plates of the outer joint and the inner joints.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view showing an eaves gutter expansion joint according to the present invention, FIG. 2 is a side sectional view taken along the line XX of FIG. 1 when the eaves gutter is maximally contracted, and FIG. 1 is a side sectional view taken along line XX of FIG. 1 at the time of maximum extension, and FIG. 4 is a perspective view showing a bellows-like packing used in the present invention.

The present invention, as shown in perspective views in FIGS. 1 and 4 and side sectional views in FIGS.
An eaves gutter expansion joint composed of two inner joints 1-1 and 1-2 slidably disposed inside the outer joint 2, provided in the two inner joints 1-1 and 1-2. Cover plate 1-11,1
-21 are opposed to each other, and both inner joints 1-1,
1-2 are connected by a bellows-like packing 3, and the bellows-like packing 3 is connected to the outer joint 2 and the inner joints 1-1 and 1-1.
It is characterized by being built-in to be able to expand and contract between the cover plates 1-1 and 1-2-1 of 1-2.

In addition, two notches 211 and 212 are provided in the joint ear holding portion 21 at the front edge of the outer joint 2,
Two notches 221 and 22 are formed in the joint ear holding portion 22 on the trailing edge.
2 and each of the two inner joints 1-1, 1-2
In the vicinity of the inner ends of the gutter ear locking portions 13-1 and 14-1 at the front edge and the rear edge of the stoppers 131, 132 and 141, respectively.
142 is formed upright, and each notch 21 of the outer joint 2 is formed.
1, 212 and 221, 222, the inner joint 1-1,
1-2 stoppers 131, 132 and 141, 14
2 can be engaged.

In the present invention having the above structure, the bellows-like packing 3 is provided.
Is a cover plate 1-1 of the outer joint 2 and the inner joints 1-1 and 1-2.
Since it is built-in and protected so as to be stretchable between 1, 1-21, it is possible to prevent the accumulation of dust and the deterioration of the bellows-like packing 3, and to prevent the eaves gutters a-1 and a-2 from being affected by the temperature difference between cold and warm. The expansion and contraction is smoothly absorbed and the water leakage is eliminated, and the stoppers 131 and 141 provided on the inner joints 1-1 and 1-2 are provided.
And 132, 142, from the outer joint 2 to the inner joint 1-
1, 1-2 is prevented from deviating or causing excessive contraction.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention comprises an outer joint 2 and two inner joints 1-1 and 1-2 slidably disposed inside the outer joint 2, as shown in FIGS. The outer joint 2 has a front edge joint ear holding portion 21 and a rear edge joint ear holding portion 22, and the outer joint 2 is connected to the front edge gutter ear support portion 13-1 of one inner joint 1-1. The gutter ear support portion 14-1 at the front edge and the gutter ear support portion at the rear edge of the other inner joint 1-2 are slidably held at the edge gutter ear support portion 14-1. 14-2 is slidably held. The joint ear holding portion 21 of the outer joint 2 is provided with two cutouts 211 and 212, respectively. Are two notches 22 each
1, 222 are provided.

One of the two inner joints 1-1 and 1-2 slidably disposed inside the outer joint 2
-1 is provided with a cover plate 1-11, and the other inner joint 1-
2 is provided with a cover plate 1-21, and the cover plate 1-11 and the cover plate 1-2 are provided.
21 are slidably opposed to each other. In addition, one inner joint 1-1 is provided with a gutter ear supporting portion 13-1 at a front edge thereof and a gutter ear supporting portion 14-1 at a rear edge thereof, and the other inner joint 1-2 is provided with the same. A gutter ear support portion 13-2 is provided on the front edge and a gutter ear support portion 14-2 is provided on the rear edge, and the eave gutter is locked on the base end side of each of the cover plates 1-11 and 1-21. Part 11-
1, 11-2 are provided so that the side ends of the eaves gutters a-1, a-2 can be connected and fixed.

In the vicinity of the inner ends of the gutter ear support portions 13-1 at the front edge and the gutter ear support portions 14-1 at the rear edge of the inner joint 1-1,
The stoppers 131 and 141 are integrally formed so as to be integrally formed, and stoppers are respectively provided near the inner ends of the gutter ear support portions 13-2 at the front edge and the gutter ear support portions 14-2 at the rear edge of the inner joint 1-2. The stoppers 131 formed on the gutter ear support portion 13-1 are formed in the cutout 211 of the outer joint 2, and the stopper 141 formed on the gutter ear support portion 14-1 is formed on the outer surface. The stopper 132 formed in the notch portion 221 of the joint 2, the gutter ear support portion 13-2 is connected to the notch portion 212 of the outer joint 2, and the stopper 142 formed in the gutter ear support portion 14-2 is connected to the outer joint 2. Are respectively arranged in engagement with the notches 222. Joint ear holding portions 21 and 2 of the outer joint 2
2, notches 211, 212 and 221, 222
Are set to notch dimensions and widths corresponding to the degree of expansion and contraction of the eaves gutters a-1 and a-2 in the axial direction.

The present invention relates to an outer joint 2 having the above arrangement.
In the gap between the inner joints 1-1 and 1-2, a bellows-like packing 3 is provided.
Is the largest requirement. That is,
As shown in FIGS. 2, 3 and 4, one end of the bellows-shaped packing 3 is inserted into a packing fixing groove 12-1 formed outside the base end of the cover plate 1-11 of one inner joint 1-1. The fixing portion 31-1 bulging inward is fitted and fixed, and the bellows-like shape is fitted into the packing fixing groove 12-2 formed outside the base end of the cover plate 1-21 of the other inner joint 1-2. The inner joints 1-1 and 1 are connected via the bellows-shaped packing 3 by fitting and fixing the fixed portion 31-2 bulging and formed inside the other end of the packing 3.
-2 are connected to each other.

As described above, the two inner joints 1-1 and 1-2 connected by the bellows-shaped packing 3 make the eaves gutter a-1 and the eaves gutter a-1 in winter.
When a-2 contracts, as shown in FIG.
Is pulled to the left, and at the same time, the inner joint 1-2 is pulled to the right, so that the bellows-like packing 3 maintains an extended state. At this time, the stopper 1 of the inner gutter joint 1-1 shown in FIG.
31, 141 are located to the left of the notches 211, 221 of the outer joint 2, and the stoppers 132,
142 is located to the right of the notches 212 and 222 of the outer joint 2.

On the contrary, when the eaves gutters a-1 and a-2 thermally expand in the summer, as shown in FIG.
1-2 is pushed toward the center, the bellows-shaped packing 3 maintains the compressed state, and the stoppers 131 and 141 of the inner gutter joint 1-1 shown in FIG. The stopper 13 of the inner gutter joint 1-2 is located closer to
2 and 142 are located to the left of the notches 212 and 222 of the outer joint 2.

According to the present invention, two inner joints 1-1 and 1-2 are arranged inside the outer joint 2 so as to face each other, and a cover plate 1-1 thereof is provided.
1, 1-21 are arranged so as to be in sliding contact with each other, and the inner joints 1-1, 1-2 are connected by the bellows-shaped packing 3, so that the eaves gutters a-1, a-2 are formed. Expansion and contraction due to the temperature difference between the temperature and the temperature is smoothly absorbed with good sliding balance. In addition, the bellows-shaped packing 3 includes the outer joint 2 and both inner joints 1-1 and 1-1.
Since it is shielded and protected by 1-2, the expansion and contraction function is not reduced by deterioration due to sunlight, and the bellows-like packing 3 is further provided with fixing portions 31-1, 31 provided at both ends thereof. -2, both inner joints 1-1, 1-2
Are fixed to the packing fixing grooves 12-1 and 12-2 in a watertight manner, so that intrusion of dust can be prevented, and water leakage to the outside can be reliably prevented.

Further, the gutter ear support portions 13-1 and 1-1 of the inner joint 1 are provided.
The stoppers 131 and 141 provided on the outer joint 2
And the stoppers 132, 1 provided in the gutter ear support portions 13-2, 14-2, respectively.
Since the recesses 42 engage with the cutouts 212 and 222, the inner joint 1 is prevented from deviating from the outer joint 2 and from being excessively contracted. Further, since the eaves gutter expansion joint of the present invention has a structure in which the inner joints 1-1 and 1-2 can be easily connected to each other with the bellows-shaped packing 3, the assembling thereof is extremely easy.

[0017]

Since the present invention has the above-described structure, the following effects can be obtained. That is, according to the present invention, since the bellows-like packing is elastically built-in and protected between the outer joint and the cover plate of both inner joints, generation of dust and deterioration of the bellows-like packing can be prevented, and the temperature of the bellows-like packing can be prevented. The expansion and contraction of the eaves gutter due to the temperature difference is smoothly absorbed with a good sliding balance, water leakage is eliminated, and the inner joint deviates from the outer joint or over-shrinks due to the stopper provided on the inner joint. This has the effect of preventing such a situation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an eaves gutter expansion joint of the present invention.

FIG. 2 is a side sectional view taken along the line XX of FIG. 1 when the eaves gutter is maximally contracted.

FIG. 3 is a side sectional view taken along line XX of FIG. 1 when the eaves gutter is fully extended.

FIG. 4 is a perspective view showing a bellows-like packing used in the present invention.

FIG. 5 shows a conventional example in a side sectional view.

[Explanation of symbols]

 1-1 One inner joint 1-11 Cover plate 1-2 The other inner joint 1-21 Cover plate 11-1 Eave gutter engaging portion 12-2 Eave gutter engaging portion 12-1 Packing fixing groove 12-2 Packing Fixed groove 13-1 Gutter ear support part 13-2 Gutter ear support part 131 Stopper 132 Stopper 14-1 Gutter ear support part 14-2 Gutter ear support part 141 Stopper 142 Stopper 2 Outer joint 21 Joint ear holding part 211 Notch 212 Notch part 22 Joint ear holding part 221 Notch part 222 Notch part 3 Bellows-shaped packing 31-1 Fixed part 31-2 Fixed part a-1 House gutter a-2 House gutter

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 55-173538 (JP, U) JP-A 57-77425 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04D 13/068 501

Claims (2)

(57) [Claims] 1. An eaves gutter expansion joint comprising an outer joint and two inner joints slidably arranged inside the outer joint, wherein the cover plates provided on the two inner joints are mutually connected. An eave characterized by being arranged to face each other and connecting both inner joints with a bellows-like packing, and the bellows-like packing is built-in and contractible between the cover plates of the outer joint and the both inner joints. Gutter expansion joint. 2. The joint ear holding portions at the front edge and the rear edge of the outer joint are formed with two notches, respectively, and the front and rear edges of the two inner joints are gutter ear locking. 2. The eaves gutter expansion joint according to claim 1, wherein a stopper is formed in the vicinity of an inner end of the portion, and each stopper is formed to be engaged with each notch of the outer joint.