JP3936604B2 - Polycarbonate resin cage fitting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an eaves fixture that is fixed to a building eaves or the like with screws or nails, and attaches eaves eaves etc., in particular, cracks are less likely to occur around the fixing hole of the fixing part, and is stable for a long period of time. The present invention relates to a cage made of polycarbonate resin that can be fixed.
[0002]
[Prior art]
Conventionally, as this kind of scissors fitting, there is a scissors fitting described in JP-A-10-196072. In this kite, the plasticizer of the vinyl chloride coated steel plate used for the windbreak plate comes into contact with the kite fixture of the polycarbonate resin molded body, and it is attacked by the plasticizer to cause cracks. The mounting strength of the fixture is prevented from lowering, and the mounting surface of the mounting portion is covered with an additive blocking film that blocks the passage of synthetic resin additives containing additives such as plasticizers. It is what.
[0003]
In addition, the scissor fixture described in JP-A-10-183903 has a substantially plate-like fixing plate at the base end, and extends in a direction substantially orthogonal to the plane of the fixing plate to hold the scissors. In the scissor fixture having a scissor support portion having a holding member, and at least the contact surface of the fixing plate made of polycarbonate, the contact surface has a limit stress value (50 ° C., 24 hours) of 130 to 2200 kgf / cm 2. This is characterized in that a spacer is provided. And the fitting part which mutually fits in each of a spacer and a fixed board is provided.
[0004]
[Problems to be solved by the invention]
By the way, when fixing the scissors fitting with the above structure to a windbreak plate or the like, a screw or the like is passed through the fixing hole and fixed by tightening the screw. However, high stress is generated around the fixing hole and cracks are generated. There was a risk of occurrence. In addition, the former scissor fixture needs to adhere the additive barrier film, and the latter scissor fixture is provided with a spacer, so that the number of parts increases and the cost increases, and the fixing work to the windbreak plate or the like is complicated. There is a problem that becomes.
[0005]
The present invention has been made in view of such problems, and the object of the present invention is to fix it with screws, nails or the like when fixing a polycarbonate resin fence fitting to a windbreak plate or the like of a building. An object of the present invention is to provide a saddle fitting that is unlikely to crack even if high stress is generated around the hole. It is another object of the present invention to provide a scissor mounting tool that can be configured easily with a reduced number of parts, can be fixed easily, and can reduce costs.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a scissor fixture according to the present invention comprises a fixing part formed of polycarbonate resin and fixed to a building, and a scissor support part extending in a cantilever form from the fixing part. The fixing portion has a fixing hole through which a stopper such as a screw passes, and the fixing hole is characterized in that a chamfered portion is formed only around the side facing the building. The chamfered portion is a corner chamfered portion formed by an inclined surface or a rounded chamfered portion formed by an arc surface, and a rounded chamfered portion having a radius of about 1 to 2 mm is preferable because stress is not easily concentrated.
[0007]
The cage made of polycarbonate resin according to the present invention configured as described above is fixed around the surface of the fixing hole facing the windbreak plate when the screw is inserted into the fixing hole and fixed to the windbreak plate of the building. Since the generated stress can be reduced, cracks are unlikely to occur and can be fixed in a stable state for a long period of time without lowering the fixing strength. For this reason, even if it receives wind pressure or an impact due to a typhoon or the like, it can be prevented from falling off. Further, since no other parts such as a spacer are required, the configuration can be simplified, the fixing work can be easily performed, the number of parts is small, and the cost can be reduced. Since the round chamfered portion has no corner, the stress concentration can be made smaller than that of the corner chamfered portion.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a scissors fixture according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a state in which the eaves ridge is attached by the heel fixture according to the present embodiment, FIG. 2A is a front view of the heel fixture of FIG. 1, and FIG. The bottom view which fractured | ruptured the part and FIG.2 (c) are the right view of (a).
[0009]
First, with reference to FIG. 1, the eaves fence 1 attached to the eaves etc. of a building with a eaves fixture is demonstrated. The eaves 1 is made of vinyl chloride resin, polycarbonate resin or the like, the front wall 3 extends upward from the front end of the bottom wall 2, the rear wall 4 extends upward from the rear end of the bottom wall 2, and the front wall 3 A front ear 5 is formed at the upper end to reinforce the upper end of the front wall 3, and a rear ear 6 also serving as a reinforcing portion is formed at the upper end of the rear wall 4. The eaves 1 extends with the front wall 3 and the rear wall 4 slightly expanded with respect to the bottom wall 2, has a substantially U-shaped cross section, and rainwater flows along the bottom wall 2. The front ear 5 is formed with a concave portion 5a that opens in the rear ear direction. The concave portion has a narrow width at the entrance and is curved with the back curved upward. It should be noted that the eaves bowl is not limited to the above-mentioned shape, and of course may have an appropriate shape such as a semicircular section or a U-shaped section.
[0010]
The eaves fixture 10 for attaching the eaves eaves 1 is made of polycarbonate resin , and as shown in FIG. 2, a fixing plate 11 constituting a fixing portion formed in a substantially flat plate shape at the base end portion, and a fixing plate 11 A front ear support portion 12 that extends in a cantilever shape in a direction substantially orthogonal to the plane and supports the front ear 5 of the heel 1 as a heel support portion is formed on the distal end side, and the rear end is formed on the proximal end side. A rear ear support portion 13 that supports the ear 6 is formed. The front ear support portion 12 is formed with an upper protrusion 12a that fits into the recess 5a of the front ear 5, and a recess 12b that fits the protrusion of the heel 1 below. The rear ear support portion 13 is formed with a support claw portion 13a and a projection 13b that engage with a wide step portion of the rear ear. In this way, the heel fitting 10 supports the front ear 5 and the rear ear 6 and supports the eaves jar 1 in a suspended manner.
[0011]
Three fixing holes 15 are formed in the fixing plate 11 of the saddle fixture 10. The anchor 20 is fixed to the building by inserting a screw 20 or a nail, which is a stopper, into the fixing hole 15 and screwing the screw 20 into the windbreak plate 21 of the building, for example. The fixing hole 15 is formed to have a diameter of about 3 to 4 mm, and the depth of the hole is set to about 5 to 10 mm, similar to the thickness of the fixing plate. Note that the number of fixing holes is not limited to three, but may be two or even more.
[0012]
As shown in detail in FIG. 3 (a), in the periphery of the surface of the fixed hole 15 facing the building, as a chamfered portion, at the corner on the surface side of the fixed hole 15 facing the windbreak plate, A rounded chamfered portion 16 having a radius of curvature of about 1 mm is formed. That is, when the fixing plate 11 is tightened with the screw 20, the maximum stress is generated at the corner of the surface opposite to the surface facing the head of the screw 20, and the rounded chamfered portion 16 is formed at the corner. As a chamfered portion, as shown in FIG. 3B, a corner chamfered portion 17 is formed at a corner portion of the surface of the fixing hole 15 on the side of the windbreak plate by a corner hook of about 1 mm formed by an inclined surface. . Note that the corner chamfered portion is not limited to an inclination of 45 degrees, and may be an arbitrary angle.
[0013]
Thus, since the rounded chamfered portion 16 and the corner chamfered portion 17 are formed around the surface on the opposite side to the surface with which the head of the screw 20 contacts, the fixed plate 11 is fixed when the screw 20 is tightened. The stress generated in the plate can be reduced. As a result, stress can be prevented from concentrating around the windbreak plate 21 side of the fixing hole 15, cracks are less likely to occur around the fixing hole 15, and the saddle fixture 10 can be stably maintained for a long time. Can be fixed without lowering.
[0014]
The operation of the scissor fixture of the present embodiment configured as described above will be described below.
When, for example, a screw 20 is inserted into the fixing hole 15 formed in the fixing plate 11 of the saddle fixture 10 to fix the saddle fixture 10 to the windbreak plate 21 at the eaves, the windbreak plate 21 is tightened as the screw 20 is tightened. The maximum stress is generated in the corner portion on the surface side in contact with the surface. However, since the rounded chamfered portion 16 and the corner chamfered portion 17 are formed in the corner portion, the stress is relieved and cracks are hardly generated. For this reason, fixation to the building of the eaves fixture 10 is stabilized for a long period of time, and it can prevent that fixing strength falls. When the fixing strength is reduced, there is a problem such as wind pressure acting on the eaves wall due to a storm or the like, so that the fence attachment 10 is dropped. However, the use of the fence attachment 10 of the present embodiment prevents the above-described problems. be able to. Further, when fixing the saddle fitting 10 to the windbreak plate 21, it is not necessary to sandwich other parts such as a spacer between the windbreak plate and the fixing plate 11, so that the fixing work is facilitated.
[0015]
In addition , the gutter attachment according to the present invention can attach all rain gutters such as eaves eaves, eaves, eaves eaves joints, eaves joints, eaves eaves collectors and the like. For example, in the case of a scissor fixture for fixing a scissors, a support shaft may be extended from the fixing plate and a ring-shaped scissor mounting part may be formed at the tip thereof. Moreover, although the said heel support part was taken as the structure which consists of a front ear support part and a back ear support part, it can select suitably according to the shape of the heel to which it is attached.
[0016]
【The invention's effect】
As can be understood from the above description, when the polycarbonate resin scissor fixture of the present invention is fastened to a building by fastening with a fastener such as a screw, cracks hardly occur around the fixing hole provided in the fixing plate. It can be stably fixed over a long period of time without lowering the fixing strength. For this reason, even if it receives a wind pressure or an impact, it can prevent that a saddle fixture falls off, and an eaves basket etc. do not fall off. Further, the number of parts is small, the configuration can be simplified, the fixing work is easy, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state in which an eaves basket is attached according to an embodiment of a hook fixture according to the present invention.
2A is a front view of the saddle fitting of FIG. 1, FIG. 2B is a bottom view of a portion of FIG. 1A, and FIG. 2C is a right side view of FIG.
3A is an enlarged cross-sectional view of a main part showing a fixing state of a fixing hole, and FIG. 3B is an enlarged cross-sectional view of a main part showing another fixing state of the fixing hole.
[Explanation of symbols]
10 樋 Fixture 11 Fixing plate (fixing part)
12, 13 樋 Supporting portion 15 Fixing hole 16 Round chamfered portion 17 Corner chamfered portion 20 Screw 21 Windbreak plate

Claims (1)

A polycarbonate resin scissor fixture comprising a fixing part fixed to a building and a scissor support part extending in a cantilever shape from the fixing part,
The fixing portion has a fixing hole through which a stopper such as a screw passes, and the fixing hole is formed of a polycarbonate resin characterized in that a chamfered portion is formed only around the surface facing the building .樋 Fixture.

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