JP2512662B2 - Cast fitting - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast-made connecting tool for easily and strongly connecting a pillar mainly constituting a carport and a roof lumber.

[0002]

2. Description of the Related Art A carport is one in which the four corners of the roof are supported by columns, or one end of the roof is supported by columns, and the carport is supported in a one-way manner. In any of the carports, a roofing lumber for a roof is mounted on a pillar by using a casting-made connecting member. Specifically, insert the legs of the connecting member into the pillar, insert the arm of the connecting member into the roof lumber, and fasten the pillar and the leg, and the lumber and the arm with bolts respectively. The roof plate is attached to. (For example, 3-42
209 bulletin, Jikken 4-214 bulletin)

As the roof support means of the carport, a means for directly supporting the side frame of the roof by means of a pillar, a means for directly supporting the rear part of the side frame or the rear part of the hanging lumber by means of the pillar, and a means for supporting the front part of the side frame by means of an auxiliary pillar. Is also known, and means for directly supporting the eaves girder of the roof by columns are also known. (For example, JP-A-48-11821, JP-A-58-2202, JP-A-58-64750, JP-A-61-141463, JP-A-58-64750)
61-147854)

[0004] In terms of structure, the casting connecting member used for connecting the support pillar and the lumber is constructed by first casting a connecting base material having an arm portion on one side of the base portion and a leg portion on the other side, and the arm portion of the connecting base material. Bolt insertion holes are drilled at the two positions of the and the leg afterwards, respectively, or a core corresponding to the bolt insertion hole is made in advance, and the core is arranged at the bolt insertion hole position of the mold to cast the connecting member. However, after casting the connecting member, the core was removed from the connecting member.

[0005]

In the case of a connecting member in which an insertion hole is drilled after casting, since it is difficult to punch the casting, the production efficiency deteriorates and the cost increases accordingly. However, a connection member that uses a core to form an insertion hole requires a high degree of skill in forming and arranging the core, and the core can only be used once, so it is expensive accordingly. There was a problem. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a casting connector with less post-processing.

[0006]

In order to achieve the above object, the casting connector of the present invention has a leg portion at one end of the inclined body portion and an arm portion at the other end thereof so as to project at least the leg portion. Each of the arms is provided with a concave groove that opens laterally, and a notch groove is provided in a part of the side wall of the groove that forms the concave groove, while a groove that bulges in the width direction from the groove bottom wall and opens in the opposite direction to the notch groove. A dome-shaped wall is provided, and the notch groove and the dome wall form a bolt communication hole.

[0007]

A tunnel which bulges in the width direction from the bottom wall of the groove and opens in the direction opposite to the notch groove while forming a notch groove in a part of the side wall of the groove by providing a lateral groove on the leg and arm. By forming a dome-shaped wall, coreless casting is possible. Further, since the bolt communication hole is formed by the notch groove opening in the opposite direction and the dome wall, it is possible to use the communication hole to bolt the column and the lumber.

[0008]

EXAMPLE First, the structure of the carport will be described with reference to FIG. 10. The hanging timber T of the roof S is connected to the pillar P, and several margins N are laid horizontally on the hanging timber T. Roof board G on the field N
Is attached and the roof S is supported by the pillars P from the four corners, or the rear part of the roof S is supported by the pillars P and is supported in a one-way manner. Prop P and hanging wood T that make up the carport
Is extruded into a hollow shape from a light metal material.

Next, the structure of the casting connector according to the present invention will be described with reference to the drawings of the embodiment. The connector 1 has abutting portions 2a and 2b at the upper end and the lower end of the slant body 2. , Upper striking part 2a
Further, while the arm portion 3 to be inserted into the hollow portion t of the roofing lumber T is provided in a protruding manner, the leg portion 4 to be inserted into the hollow portion p of the support pillar P is provided below the lower abutting portion 2b so as to form an arm portion 3. The leg portions 4 are provided with the concave grooves 8 and 18 which are opened laterally, and the groove side walls 8a forming the concave grooves 8 and 18,
Notch grooves 5 and 15 that cut toward the groove bottom wall 8c are provided in a part of 8b, while a tunnel-shaped dome wall that opens in a direction opposite to the notch grooves 5 and 15 in a part of the groove bottom wall 8c. 6 and 16 are formed.

The grooves 8 and 18 formed in the arm 3 and the leg 4 are
Opening laterally with respect to the protruding direction of the arm 3 and the leg 4, or opening in the vertical direction of the arm 3 and the front-back direction of the leg 4 and deeper than the rod diameter r of the bolt B. Is.
The notch grooves 5 and 15 that cut into the groove side walls 8a and 8b cut deeply toward the groove bottom wall 8c, and the dome walls 6 and 16 are recessed from the groove bottom wall 8c at positions corresponding to the notch grooves 5 and 15. It bulges out to 18 and is formed in the width direction of the arm 3 and the leg 4.

The notched grooves 5 and 15 cut into the groove side walls 8a and 8b and the dome walls 6 and 16 that bulge from the groove bottom wall 8c open slightly larger than the bolt rod diameter r, respectively, and the dome wall 6 and 16
Bulges to the opening range of the notch grooves 5, 15 and opens in the direction opposite to the notch grooves 5, 15, that is, the notch grooves 5, 15.
A bolt communication hole 10 is formed by 15 and the dome walls 6 and 16.

The slanted body 2 has an I-shaped cross section and is thicker from the side of the arm 3 toward the side of the leg 4, and has an abutting portion 2a parallel to the projecting direction of the arm 3 at the upper end and a lower end. An abutting portion 2b parallel to the protruding direction of the leg portion 4 is formed in the portion. The cross section of the arm portion 3 is formed to be slightly smaller than the upper abutting portion 2a of the inclined body portion 2, and the leg portion 4
The cross section is formed to be slightly smaller than the lower abutment portion 2b, and the arm portion 3 projects slightly upward from the horizontal direction in accordance with the inclination of the roof lumber T.

It is possible to form the concave grooves 8 and 18 of the arm portion 3 and the leg portion 4 to one side and deeply form them so that the cross sections of the arm portion 3 and the leg portion 4 are formed into a lip groove type. It is also possible to form 8 and 18 symmetrically on the left and right sides or vertically, or to form symmetrically on the front and rear sides and form the cross section of the arm 3 and the leg 4 into an I-shape. Arm 3
And the leg 4 are formed in a lip groove type, the groove side walls facing each other
It is desirable to form the reinforcing rib 7 between 8a and 8b, and also to form the reinforcing rib 17 at least at the ends of the arm 3 and the leg 4.

In FIG. 3, in the leg portion 4, a notch groove 15 is provided between the groove side wall 8a and the dome wall 16 and between the groove side wall 8b and the dome wall 16.
The bearing 19 which is continuous to the above is provided to reduce the load on the notch groove 15. It is also possible to provide the bearing 9 between the groove side walls 8a and 8b of the arm portion 3 and the dome wall 6. The connecting tool 1 of FIG. 5 has a groove 8 that opens vertically in the arm 3 and a groove 18 that opens in the front-rear direction in the leg 4, and the groove side walls 8a and 8b of the grooves 8 and 18 are formed. While forming the cutout grooves 5 and 15, the dome walls 6 and 16 are formed in the groove bottom wall 8c in the opposite direction to the cutout grooves 5 and 15 and bulge to the opening range of the cutout grooves 5 and 15. .

In FIG. 7, in the leg portion 4, the reinforcing rib 7 provided between the groove side walls 8a and 8b is provided continuously from the notch groove 15 to the outer circumference of the dome wall 16, or from the bearing 19 to the outer circumference of the dome wall 16. The dome walls 6 and 16 are continuously provided, and the reinforcing ribs 7 reinforce the dome walls 6 and 16. It is also possible to continuously provide the reinforcing rib 7 on the outer circumference of the dome wall 6 through the notch groove 5 of the arm portion 3 or on the outer circumference of the dome wall 6 through the bearing 9.

Since the casting connector 1 of the present invention has the above structure, the notch grooves 5 and 15 provided in the groove side walls 8a and 8b and the groove bottom wall 8c.
Since the dome walls 6 and 16 that bulge in the opposite direction are open in the opposite direction, they can be cast without using a core. Moreover, the dome wall 6,16
Bulges up to the opening range of the notch grooves 5,15, and the dome walls 6,16
Since the bolt communicating hole 10 is formed by the notch grooves 5 and 15, if the rod b of the bolt B is inserted into the communicating hole 10, the pillar P and the hanging lumber T can be fixed like the conventional connecting member A.

[0017]

Since the casting connector according to the present invention is constructed as described above, it has the following effects.
The arm and leg are provided with a concave groove that opens laterally, and the notch groove that is provided on the side wall of the groove and the dome wall that bulges on the groove bottom wall are opened in opposite directions. The connector may be cast. Moreover, since the bolt communication hole is formed by the notch groove opening in the opposite direction and the dome wall, if the bolt is inserted into the communication hole, it is possible to easily fix the column and the lumber like the conventional connecting member.

Since it is not necessary to form a bolt insertion hole in the connecting tool after casting, the production efficiency of the connecting tool is remarkably improved and the mold can be constructed without using the core. The structure of the mold is also simple and easy. As a result, the connector can be provided at low cost. The casting connector of the present invention can also be used for connecting roofing lumber and columns on balconies and terraces.

[Brief description of drawings]

FIG. 1 is a front view of a casting connector according to the present invention.

2A, 2B, and 2C are end views taken along the line AA in FIG.
It is a -B end view and a CC sectional view.

3 (A) and 3 (B) are a plan view of a leg portion and a cross-sectional view of a main portion thereof.

4 is a side view of (A), (B), and (C) legs of FIG. 4 and D of FIG.
It is a -D sectional view and an EE sectional view.

5 (A), (B), and (C) are a front view of the casting connector of the present invention, a side view of a leg portion, and a plan view of an arm portion.

6 (A) and 6 (B) are a perspective view showing a usage example of the connector of the present invention and a cross-sectional view showing a mounting example of an arm portion.

7 (A), (B), and (C) are side views of a leg portion, a central longitudinal sectional view thereof, and a lateral longitudinal sectional view thereof.

8A and 8B are FF sectional views and GG sectional views of FIG. 7.

FIG. 9 is a cross-sectional view showing a structural example of the dome wall of FIGS.

FIG. 10 is a perspective view of a conventional carport.

FIG. 11 is a perspective view showing an example of use of a conventional connecting member.

[Explanation of symbols]

 1 Connecting tool 2 Inclined body part 3 Arm part 4 Leg part 5,15 Notch groove 6,16 Dome wall 7,17 Reinforcing rib 8,18 Recessed groove, 8a, 8b Groove side wall, 8c Groove bottom wall 9,19 Bearing 10 bolt Communication hole P Strut T Roof hanging wood p, t Hollow part S Roof G Roof plate N Field edge A Connection member, a Bolt insertion hole B Bolt b Rod r Bolt rod diameter

Claims (1)

(57) [Claims] 1. A leg portion (4) is provided at one end of the inclined body portion (2),
An arm portion (3) is provided at the other end, and at least leg portions (4) and arm portions (3) are provided with concave grooves (8, 18) that open laterally, respectively, and the concave grooves (8, 18) are formed. While notch grooves (5, 15) are provided in a part of the groove side walls (8a, 8b), the groove bottom wall (8c) bulges in the width direction and opens in the direction opposite to the notch grooves (5, 15). A tunnel-shaped dome wall (6, 16) is provided, and a cutout groove (5, 5) is provided.
A casting connector which forms a bolt communication hole (10) between the dome wall (6, 16) and the dome wall (15).