JPS5914608Y2 - door strike mounting device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a strike mounting device for easily fixing a strike for fitting a door knob latch to a metal door frame.

When a strike for fitting a door knob latch is attached to a wooden pillar, a groove for fitting the strike is cut in a position facing the knob latch on the pillar, and the strike is fixed to a predetermined position on the pillar with a wood screw.

Therefore, the strike device and its mounting position relative to the wooden rod can be easily adjusted.

On the other hand, in door frames made of metal such as aluminum, the pillars that support the strike are hollow. and the door frame are integrated with screws.

However, since this door frame is thin, it is difficult to directly fix it to the frame of the strike mounting portion with screws.

This is because the door frame is thin and the screws are not screwed together, or even if they are screwed together, the number of screw threads is small and the desired strength cannot be obtained.

Therefore, when fixing a strike to a metal door frame, stack the back plate on the back of the strike, sandwich the outer periphery of the strike insertion hole in the door frame like a sandwich between the strike outer flange and the back plate, and insert from the strike side. The striker is fixed to the frame along with the back plate by screwing the screws into this back plate.

However, with this method, the back plate is inserted into the cavity of the door frame, so the installation position of the strike can be easily adjusted before the metal door frame is fixed in the specified opening. If you loosen the strike mounting screws after they have been fixed, the back plate that was fixed with these screws will slide inside the frame cavity and fall, so you should install the strike after fixing the door frame to a pillar, etc. It was impossible to adjust the mounting position.

The present invention eliminates the above-mentioned drawbacks by temporarily fixing the back plate for fixing the strike in the cavity of the metal door frame, and also makes it easy to install the strike and adjust the mounting position. Embodiments will be described below based on the drawings.

In the figure, 1 is a door frame made of metal such as aluminum having a required size, and 2 is a door provided on the door frame 1 so as to be openable and closable.

This door 2 is provided with a knob 3 for opening and closing the door,
By rotating this knob 3, the latch 4 is moved in and out, and the latch 4 can be freely fitted into a strike 5 provided on the door frame side.

The method of providing the knob and latch on this door is the same as before.

Further, a strike 5 provided on the door frame 1 is fixed together with a back plate 6.

In this case, the door frame has a third
A long hole 1a as shown in the figure is bored, and U-shaped notches 1C are formed in the short sides 1b at both ends of the long hole 1a.

The back plate 6 is made by bending a metal band plate to form flange-shaped flat parts 6C at both ends of a central U-shaped recess 6a, and U-shaped slit-like notches near both ends of the recess 6a. 6b, 6b are cut out, and the ends of the leaf spring 7 are fitted into these notches 6b, 6b, and the center part of the spring is inserted into the back plate recess 6a.
is curved and protrudes toward the back side of the door frame 1, and a protrusion 6d and a screw hole 6e are provided on the flat parts 5c and 5c at both ends of the back plate 6, respectively. It is designed to match the short side 1a of the hole 1a and the U-shaped notch 1C.

Further, the strike 5 has a recess 5a in the center where the latch 4 is fitted, and screw holes 5b, 5 on the outside of the recess.
b.

When fixing this strike 5 to the door frame 1 via the back plate 6, the back plate 6 is first inserted into the cavity of the door frame 1, and the protrusion 6d of the back plate 6 is inserted into the elongated hole.
When the plate spring 7 is fitted to the short side 1b of the door frame 1, the leaf spring 7 presses the flat part 6C of the back plate 6 around the U-shaped notch 1C of the door frame 1, so that the back plate 6 is inserted into the cavity of the door frame. It is supported without falling off.

In this state, stack the strike 5 on the front side of the door frame 1, fit the recessed part 5a of the strike 5 into the long hole 1a of the door frame 1, and insert the screw 8 into the screw hole 5b from the front side of the strike 5. Then, this screw 8 passes through the U-shaped notch 1C of the door frame 1 and is screwed into the screw hole 6e of the back plate 6, and the hole edge of the long hole 1a of the door frame 1 is held between the back plate 6 and the strike 5. and can be firmly fixed.

Also, in this case, nuts may be integrally provided in the screw holes of the back plate 6.

As explained above, the present invention uses screws to secure the strike stacked on the front side of the door frame to the back plate, which is set in a fixed position within the cavity of the door frame using the elasticity of the leaf spring. This has the advantage that the strike can be mounted securely and the mounting position can be easily adjusted.

[Brief explanation of drawings]

Fig. 1 is a front view of the door installed in the door frame, Fig. 2 is a cross-sectional plan view of the doorknob, Fig. 3 is a perspective view illustrating the state in which the strike is attached to the door frame, Fig. 4
The figure is a sectional view of the strike installed state. 1... Door frame, 1a... Long hole,
1b... Short side, 1C... U-shaped notch, 2... Door, 3... Knob, 4...
...Latch, 5...Strike, 5a...
...Indentation, 5b...Screw hole, 6...
... Back plate, 6a ... Recessed part, 6b ... Notch, 6C ... Plane part, 6d ... Protrusion,
6e... Screw hole, 7... Leaf spring, 8.
·····Screw.

Claims (1)

[Scope of utility model registration request] A substantially rectangular elongated hole is bored at a predetermined position in a door frame having a hollow interior, and U-shaped notches are formed on both short sides of the elongated hole. A back plate is loaded in which the central part in the length direction is recessed into a U-shape, and flat parts are formed in the form of flanges on both sides of this U-shaped recess, and the flat parts are attached to the U-shaped recesses between them. The spring elastically presses the periphery of the U-shaped notch of the door frame, and the projection protruding from the flat part engages the short side of the elongated hole of the door frame. A strike mounting device for a door, characterized in that a strike is stacked on the front side of the door facing the back plate, and the strike and the back plate are integrally connected with a screw passing through a U-shaped notch in the door frame.