JPH0223733Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a structure for attaching a strike box having a latch hole to a door frame.

[Background technology]

Conventionally, the latch hole 5 was formed in the door frame 1 as shown in FIG. 7 in the diagram
is a box-shaped strike box with an opening on the front side, and is placed inside the door frame 1 from the opening 2 of the door frame 1,
A plate 6 having a latch hole 5 is arranged from the front side of the door frame 1, and a countersunk screw 12 passed through the screw hole 11 of the plate 6 is passed through the insertion opening 13 of the door frame 1, and then the screw of the mounting piece 4 of the strike box 7 is inserted. The plate 6 and strike box 7 are attached to the door frame 1 by screwing into the holes 14, and the latch hole 5 is provided in the door frame 1. However, conventionally, the latch hole 5 is formed by attaching the plate 6 to the side of the door side of the door frame 1 as described above. As a result, when the door is closed, the door hits the plate 6, causing trouble.

[Purpose of invention]

The present invention has been developed in view of the above points, and provides a structure for mounting a strike box on a door frame, which prevents the plate from protruding from the door frame and allows the door to be closed without hitting the plate. The purpose is to

[Disclosure of invention]

That is, the present invention is a mounting structure in which a strike box 7 having a plate 6 in the front face with a latch hole 5 is attached to an opening 2 formed on the side surface of the door side of a rectangular cylindrical door frame 1. Inside the opening of the door frame 1, an inner case 3 is disposed, which has a box shape with an open front and has a mounting piece 4 fixed to the inner surface of the periphery of the opening of the door frame 1 extending from the front opening edge. The strike box 7, which is housed in the inner case 3 and has the rear surface of the plate 6 in contact with the front surface of the mounting piece 4, and whose front surface is flush with the side surface of the door frame 1, can be adjusted at its bottom. It is fixed to the inner case 3 by a screw 8 which is screwed into the inner case 3 through a hole 9, and the adjustment hole 9 has a diameter larger than the shaft diameter of the screw 8 and a head 10 of the screw 8.
The above object is achieved by a structure for mounting a strike box on a door frame, which has an inner diameter smaller than the side diameter, and the screw insertion position can be adjusted within the range of the difference in diameter.

The present invention will be explained in detail below with reference to Examples. As shown in FIG. 2, the inner case 3 is formed into a box shape with an open front side, and mounting pieces 4, 4 extend above and below the upper and lower ends of the opening edge, respectively. Each mounting piece 4, 4 has screw holes 14, 14 drilled therein,
A screw hole 15 is also bored in the bottom surface of the inner case 3. Strike Box 7 has latch hole 5 on the front.
It is formed into a box shape having a plate 6 with a hole therein, and an adjustment hole 9 is formed on the bottom surface. The adjustment hole 9 has an inner diameter that is larger than the axial diameter of the screw 8 and smaller than the diameter on the head 10 side of the screw 8, here the diameter of the washer 16.

Therefore, when attaching the strike box 7 provided with the latch hole 5 to the door frame 1, it is necessary to attach the door side of the door frame 1, which is formed into a rectangular tube shape from aluminum, steel, wood, etc. An opening 2 is formed by cutting out the opening 2, an inner case 3 is placed inside the opening 2 as shown in FIG. The inner case 3 is fixed to the door frame 1 by screwing countersunk screws 12, which are brought into contact with each other so that the front surface of the door frame 1 passes through, into the screw holes 14 of the mounting piece 4. Next, the strike box 7 is put into the inner case 3, the upper and lower ends of the plate 6 are brought into contact with the top surfaces of the upper and lower mounting pieces 4, 4 of the inner case 3, respectively, and the screw 8 is inserted into the adjustment hole 9 through the washer 16. , and the tip of the screw 8 is screwed into the screw hole 15 of the inner case 3.
By tightening this screw 8, the strike box 7
The bottom surface of the plate 6 is pressed toward the inner case 3 side, and the upper and lower ends of the plate 6 are crimped to the surface of the mounting piece 4, and the washer 16 is crimped to the bottom surface of the strike box 7 to fix the strike box to the inner case 7. It is something that can be done. At that time, the mounting piece 4 of the inner case 3 is attached to a position slightly deeper than the surface of the door frame 1, so that the surface of the plate 6 and the side surface of the door frame 1 are flush with each other, and the plate 6 is attached to the door. It does not protrude from the side of the frame 1 toward the door. In addition, a difference is formed between the inner diameter of the adjustment hole 9 and the diameter of the shaft of the screw 8 as described above, and by loosening the screw 8 with a screwdriver, the strike box 7 can be moved vertically and horizontally. This allows the position of the latch hole 5 to be adjusted. At this time, an adjustment gap l is formed between the plate 6 and the door frame 1. In the above embodiment, the washer 16 was used as a member on the head 10 side of the screw 8, the washer 16 was fitted onto the screw 8, and the bottom surface of the strike box 7 was crimped with the washer 16. The head 10 of the screw 8 itself is formed larger than the diameter of the adjustment hole 9.
Alternatively, the bottom surface may be crimped with the head.

[Effect of idea]

As mentioned above, the present invention does not attach the strike box plate to the door frame, but instead uses a box-shaped plate with an opening at the front, and a mounting piece that is fixed to the inner side of the periphery of the opening of the door frame and extends from the front opening edge. Since it is in contact with the front of the mounting piece of the inner case and is fixed to the inner case, the front of the plate can be kept flush with the side of the door frame, and the plate can be kept flush with the side of the door frame. It does not protrude from the side toward the door, so there is no problem of the door hitting the plate and not closing as in the past, and the door can be closed to the door frame without any problems. Moreover, it is installed at the bottom of the strike box. The inner diameter of the adjustment hole is larger than the shaft diameter of the screw that is screwed into the inner case through this adjustment hole, and smaller than the diameter of the head side of the screw, and the screw insertion position is within the range of the difference in diameter. Since the strike box is adjustable inside, the strike box can be moved up and down, left and right by loosening the screw, and the mounting position of the latch hole can be adjusted with a single screwdriver.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a conventional example, FIG. 2 is an exploded perspective view of an embodiment of the present invention, and FIG. 3 is a sectional view of a main part of the same. 1 is a door frame, 2 is an opening, 3 is an inner case, 4 is a mounting piece, 5 is a latch hole, 6 is a plate, 7 is a strike box, 8 is a screw, 9 is an adjustment hole, and 10 is a head.

Claims (1)

[Scope of utility model registration request] This is a mounting structure in which a strike box having a plate with latch holes on the front side is attached to an opening formed on the door side side of a rectangular cylindrical door frame. An inner case is provided which has an opening box shape and has a mounting piece extending from the front opening edge, which is fixed to the inner surface side of the opening periphery of the door frame. The strike box, whose back plate is in contact with the front surface of the door frame and whose front plate is flush with the side surface of the door frame, is fixed to the inner case with a screw that screws into the inner case through the adjustment hole at the bottom of the strike box. A strike box for a door frame in which the adjustment hole has an inner diameter larger than the shaft diameter of the screw and smaller than the diameter of the head side of the screw, and the screw insertion position can be adjusted within the range of the above diameter difference. mounting structure.