JPH0527672Y2 - - Google Patents

Description

[Detailed description of the invention] a. Purpose of the invention (industrial application field) The sash connection part using the corner block according to this invention is a frame-shaped article such as a security grid by combining extruded aluminum materials. It is used when manufacturing a frame-shaped article to give a good appearance to the corner part of the frame-shaped article.

(Prior Art) Windows that are not equipped with shutters, such as those in bathrooms and toilets, are often provided with grids for security purposes.

To make such a surface lattice, an extruded material made by extruding aluminum material is used, and the lattice material is fixed inside a frame made of this extruded material to form a surface lattice. However, when making a grid frame using extruded materials, it is widely practiced to cut the ends of the extruded materials at a 45-degree angle and connect the ends at right angles using corner blocks. .

That is, when joining a horizontal member 1 having a cross-sectional shape as shown in FIG. 3 and a vertical member 2 having a cross-sectional shape as shown in FIG. As shown in FIG.
The cross member 1 and the vertical member 2 are assembled at right angles by cutting them diagonally at a 45-degree angle and butting the cut ends together, and by injection molding synthetic resin, the sixth
As shown in FIG. 9, the horizontal member 1 and the vertical member 2 are joined by an L-shaped corner block 3 as shown in FIGS.

Corner block 3 is made in an L-shape.
One piece 4 is formed with a cross-sectional shape that allows it to be freely inserted without rattle inside the cross member 1, and the other piece 5 is formed with a cross-sectional shape that allows it to be freely inserted without rattle inside the vertical member 2. The one piece is also provided with a through hole 9 for inserting a tapping screw 8 that is inserted from above into a circular hole 6 drilled in an end of an upper wall 10 of the cross member 1 and that screws into a tapping groove 7 formed in the inner peripheral surface of the vertical member 2.

When joining the horizontal member 1 and the vertical member 2 at right angles using such a corner block 3, the corner block 3
One piece 4 is inside the end of the horizontal member 1, and the other piece 5 is the vertical member 2.
into the inside of the ends of the upper wall 1 of the cross member 1.
A tapping screw 8 is inserted from above into a circular hole 6 bored at the end of the corner block 3, and is inserted through a through hole 9 formed in one piece of the corner block 3. and tighten it even more.

The centers of the through hole 9, the circular hole 6, and the tapping groove 7 are aligned as shown in FIG. 10, and the tapping screw inserted through the circular hole 6 bored in the cross member 1 as described above 8 is screwed into the tapping groove 7 formed in the vertical member 2 and further tightened, so that the horizontal member 1 and the vertical member 2 are joined at right angles via the corner block 3.

(Problems to be Solved by the Invention) However, when the horizontal member 1 and the vertical member 2 are joined at right angles as described above, the following disadvantages occur.

In other words, it is fine if the tapping screw 8 is tightened by hand while adjusting the tightening torque, but if the tapping screw 8 is tightened by hand while adjusting the tightening torque, it is better to tighten the tapping screw 8 by hand using an electric or automatic tool such as an air driver, as in the case of mass production in a factory. Therefore, when tightening with a large torque, the tapping screw 8 is strongly screwed into the tapping groove 7, and as a result, the vertical member 2 is strongly pulled upward at the tapping screw 7 portion, and as a result, the tip portion is pushed into the corner of the corner block 3. The vertical member 2 is positioned relative to the corner block 3 only by abutting against the convex portion 12 formed in the corner block 3.
moves while sliding the contact surface with the cross member 1,
The joint between the two materials 1 and 2 becomes misaligned as shown in FIG.

If the joint between the horizontal member 1 and the vertical member 2 deviates in this way, the appearance of a product such as a grid made of the horizontal member 1 and the vertical member 2 will become unsightly, which is not preferable.

The sash connection using the corner block of the present invention can be made by carefully arranging the position of the through-hole formed in one piece of the corner block for inserting the tapping screw.
This solves the above-mentioned inconveniences.

b. Structure of the invention (means for solving the problem) The sash joint using the corner block of the present invention is similar to the case of the conventional sash joint described above, as shown in FIG. The ends of the horizontal members 1 and the vertical members 2 are each diagonally cut at a 45-degree angle, and the obliquely cut end faces are brought together to assemble the horizontal members 1 and the vertical members 2 at right angles, and the synthetic resin is injection molded. Due to the corner block 3 built in an L shape,
As shown in FIG. 9, the horizontal member 1 and the vertical member 2 are joined.

Corner block 3, which is entirely L-shaped,
Similar to the case of the corner block used in the conventional connection section (which the present inventor considered prior to the present invention), the cross-sectional shape is such that the piece 4 can be freely inserted into the inside of the cross member 1 without rattling. The other piece 5 is formed into a cross-sectional shape that allows it to be inserted into the inside of the vertical member 2 without rattling, and the tip edge of each member 1, 2 is provided on the outside of the corner where both pieces 4, 5 are continuous. Convex portion 12 that abuts the
is formed. In addition, a circular hole 6 bored on the upper side of the end of the cross member 1 is inserted into the piece 4 from above,
A through hole 9 is provided for inserting a tapping screw 8 which is screwed into a tapping groove 7 formed on the inner peripheral surface of the vertical member 2.

However, in the corner block 3 used for the sash connection of the present invention, the center position of the through hole 9 formed in the vertical direction in the piece 4 that can be inserted into the inside of the cross member 1 without rattling, The center position of the tapping groove 7 formed on the inner peripheral surface of the vertical member 2 and the upper wall 1 of the horizontal member
The center position of the through-hole 9 is not aligned with the center position of the circular hole 6 drilled at 0, as in the case of a corner block used for a conventional sash connection, but the center position of the through-hole 9 is aligned with the center position of the tapping groove 7 and the circular hole 6. In addition to slightly shifting the position toward the other piece 5 side, compared to the distance L from the center line a of the tapping groove 7 to the tip edge of the tapping groove 7,
The distance l from the center line b of the through hole to the other piece 5 is made slightly smaller (L>l).

In this way, the amount (L-l) by which the through hole 9 is shifted from the tapping groove 7 toward the other piece 5 side is approximately 1/20 of the outer diameter (for example, 4 mm) of the tapping screw 8, and the circular hole 6 and the through hole The lower end of the tapping screw 8 inserted through the hole 9 is screwed into the upper end of the tapping groove 7 so that it can be further tightened.

Such a corner block 3 is similar to the case of the conventional sash connection section described above.
One piece 4 is inside the end of the horizontal member 1, and the other piece 5 is the vertical member 2.
Insert each into the inside of the end of the horizontal member 1 and vertical member 2.
The tip edges of the cross members 1 and 3 are abutted against the convex portions 12 formed at the corners of the outer peripheral surface of the corner block 3, respectively, and inserted from above into the circular holes 6 bored on the upper side of the ends of the cross members 1, and the corner blocks 3 A tapping screw 8 inserted through a through hole 9 formed in one piece is screwed into a tapping groove 7 formed on the inner peripheral surface of the vertical member 2, and further tightened.

By this screwing and tightening work, the horizontal member 1 and the vertical member 2 are joined at right angles via the L-shaped corner block 3.

(Function) The corner block 3 is entirely L-shaped and has a circular hole 6 bored in the upper wall 10 of the horizontal member 1 and a through hole 9 slightly offset from the tapping groove 7 formed in the vertical member 2. During the above-mentioned screwing and tightening work, the following action is taken to prevent the joint between the horizontal member 1 and the vertical member 2 from shifting and causing an unsightly appearance.

That is, the other piece 5 is smaller than the circular hole 6 and the tapping groove 7.
As shown in FIG. 2, the tapping screw 8 that has passed through the through hole 9 that has shifted to the side and is screwed into the tapping groove 7 of the vertical member 2 is slightly deformed at the part that passes through the through hole 9, and this It enters into the tapping groove 7.

When the tapping screw 8 is screwed into the tapping groove 7 in this manner, when the tapping screw 8 is further tightened, the deformed portion of the tapping screw 8 tends to straighten, and this deformed portion extends into the through hole 7. Press the inner wall of the holder to the left in FIG. As a reaction to the force that presses the corner block 3 to the left in this manner, the upper end of the tapping screw 8 presses the horizontal member 1 and the vertical member 2 to the right.

As a result of the horizontal member 1 being pressed to the right, the tip edge of the horizontal member 1 is pressed against the convex portion 12 of the corner block 3, and as a result of pressing the vertical member 2 to the right, the inner wall of the vertical member 2 The edge of the tapping groove 7 formed in the corner block 3 is strongly pressed against the side surface of the other piece 5 of the corner block 3, and at the same time, the tip edge of the vertical member 2 is pressed against the convex portion 12.

In this way, the edge of the tapping groove 7 formed on the inner wall 11 of the vertical member 2 is aligned with the other piece 5 of the corner block 3.
As a result, the tip edge of the vertical member 2 is pressed against the convex portion 12, and in order to further rotate the tapping screw 8 and raise the vertical member 2 relative to the corner block 3, the tapping groove 7 must be A torque strong enough to deform the corner block 3 is required, and the tapping screw 8 cannot be rotated any further with the torque generated by automatic tools used in factories to assemble surface gratings, etc.

As mentioned above, the corner block 3 and the vertical member 2 are
The edge of the tapping groove 7 is strongly pressed against the inner surface of the other piece 5, and the tip edge of the vertical member 2 is pressed against the convex portion 12 to firmly join, so that the tapping screw 8 can be screwed and tightened. As a result, the positional relationship between the corner block 3 and the vertical member 2 does not shift. Furthermore, the corner block 3 and the cross member 1 connect the upper wall 10 of the cross member 1 to the lower surface of the head of the tapping screw 8 and the corner block 3.
Since it is firmly positioned by sandwiching it between the top surface of the piece 4 and pressing the tip edge of the cross member 1 against the convex part 12 of the corner block 3, as the tapping screw 8 is screwed and tightened. corner block 3
The positional relationship between the horizontal member 1 and the horizontal member 1 will not shift.

Therefore, the horizontal member 1 and the vertical member 2 are joined to each other without shifting through the corner block 3, and the joint portion does not shift as shown in FIG. 11. Vertical material 2
The end of the inner wall 11 is elastically deformed as the tapping screw 8 is screwed in and tightened, but this deformed portion is not visible from the outside of the grid, so it does not deteriorate the appearance of the product.

In the above explanation, horizontal and vertical materials were distinguished for clarity, but in the sash connection part of the present invention, there is no need to distinguish between horizontal and vertical materials. You can also reverse the vertical and horizontal directions. Of course, the horizontally vertical structure and the horizontally reversed structure also belong to the technical scope of the present invention.

c. Effects of the invention Since the sash joint using the corner block of the present invention is configured and operates as described above, even when the tapping screw is tightened with strong torque in the factory, the sash joints are This makes it possible to efficiently produce products with good appearance without shifting.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing the positional relationship of the holes provided in the members constituting the sash joint of the present invention, Fig. 2 is a longitudinal cross-sectional view showing the joint state, and Fig. 3 is a vertical cross-sectional view showing the joint state. FIG. 4 shows an example of a horizontal member to be joined. FIG. 4 is a cross-sectional view of an example of a vertical member. FIG. 5 is an exploded perspective view of the joint, and FIGS. 6 to 8 show corner blocks. Figure 6 is a side view, Figure 7 is a plan view,
FIG. 8 is a view seen from the right side of FIG. 6, FIG. 9 is a front view showing the joined state, and FIG. FIG. 11 is a longitudinal sectional view similar to the one shown in the figure, and a front view showing a state in which the vertical members have shifted due to the conventional structure. 1... Horizontal material, 2... Vertical material, 3... Corner block, 4... One piece, 5... Other piece, 6... Circular hole, 7...
... Tapping groove, 8... Tapping screw, 9...
Through hole, 10... Upper wall, 11... Inner wall, 12...
Convex part.

Claims (1)

[Scope of utility model registration request] The end of the horizontal member 1 and the end of the vertical member 2 are each diagonally cut at a 45 degree angle, and the beveled end faces are butted together to combine the horizontal member 1 and the vertical member 2 at right angles, and to synthesize them. In a sash connection section using a corner block that joins the horizontal member 1 and the vertical member 2 by a corner block 3 formed into an L-shape by injection molding of resin, the corner block 3 is made of one piece 4.
is formed into a cross-sectional shape that allows it to be inserted into the inside of the horizontal member 1 without play, and the other piece 5 is formed into a cross-sectional shape that allows it to be inserted into the vertical member 2 without play, and a corner where both pieces 4 and 5 are continuous is formed. A convex part 12 is formed on the outside of the corner part, and the tip edge of each member 1, 2 comes into contact with the convex part 12.
A through hole 9 is inserted from above through a circular hole 6 bored at the end of the upper wall 10, and a tapping screw 8 is inserted into the tapping groove 7 formed on the inner circumferential surface of the vertical member 2. The center position of the through hole 9, the center position of the tapping groove 7 formed on the inner circumferential surface of the vertical member 2, and the center position of the circular hole 6 bored in the upper wall 10 of the horizontal member are set in the through hole 9. The center position of the tapping groove 7 and the circular hole 6 is determined so as to be slightly shifted toward the other piece 5 side, and the distance L from the center line a of the tapping groove 7 to the tip edge of the tapping groove 7 is The distance l from the center line b of the through hole 9 to the other piece 5 is made slightly larger, and one piece 4 of the corner block 3 is placed inside the end of the horizontal member 1, and the other piece 5 is placed inside the end of the vertical member 2. ,
The end edges of the horizontal member 1 and the vertical member 2 are respectively inserted into the convex portions 12 formed at the corners of the outer peripheral surface of the corner block 3, and the circles drilled on the upper side of the ends of the horizontal member 1 are inserted. The tapping screw 8 inserted into the hole 6 from above and passed through the through hole 9 formed in one piece of the corner block 3 is screwed into the tapping groove 7 formed on the inner peripheral surface of the vertical member 2, and further tightened. A sash connection using a characteristic corner block.