JPH019893Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a cylinder mounting device for a lock.

Generally, locks installed on doors have a cylinder insertion hole formed in the side plate of a lock box installed inside the door, and the tip of a pin cylinder is inserted into this insertion hole to prevent it from coming out. Since this is a connection method in which the tip of a set screw screwed into the box is pressed against a part of the outer periphery of the cylinder to prevent the cylinder from falling out, an adjustable wrench is engaged with the tip of the pin cylinder that protrudes from the surface of the door to apply rotational force. As a result, the cylinder sometimes rotated and came off the lockbox, posing a crime prevention problem.

Therefore, the object of this invention is to solve the above-mentioned problems and provide a cylinder mounting device for a lock, which allows a pin cylinder to be firmly mounted to a lock box.

The structure of this device is that a vertically long hole is formed in the side plate of the lock box, and an insertion shaft is formed at the tip of the cylinder that fits into the upper part of the vertical hole and then lowers. A guide groove extending in the vertical direction is provided in the lock box, and an upper engagement piece and a lower engagement piece formed on both sides of the vertical hole are engaged with the guide groove to prevent the cylinder from coming out, and the cylinder is inserted to protrude into the inside of the lock box. Retaining pieces are formed on the top and bottom of the shaft, the lower retaining piece is engaged with the lower edge of the insertion hole, and the upper retaining piece is engaged with a wedge plate inserted between the top plate of the lock box and the upper outer periphery of the cylinder. It is characterized by the fact that

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in the figure, the lock box 1 includes opposing side plates 2, a vertically elongated hole 3 is formed in the side plate 2, an upper engaging piece 4 is provided in the center of both side edges of the vertically elongated hole 3, and A lower engagement piece 5 is formed at the lower part of the edge.

On the other hand, an insertion shaft portion 11 with flat portions 12 on both sides is formed at the tip of the cylindrical pin cylinder 10 connected to the lock box 1, and the width dimension between the flat portions 12 of the insertion shaft portion 11. is smaller than the width of the vertically elongated hole 3. Further, the height dimension of the insertion shaft portion 11 is smaller than the dimension between the upper edge of the vertically elongated hole 3 and the lower engaging piece 5, so that the insertion shaft portion 11
When inserted, the upper engagement piece 4 fits into a horizontal guide groove 13 formed in the flat part 12 of the insertion shaft part 11.

The flat part 12 of the insertion shaft part 11 has a guide groove 1.
An engagement groove 14 is formed extending perpendicularly from the end of the vertical hole 3. When the insertion shaft 11 is inserted into the upper part of the vertical hole 3 and the pin cylinder 10 is lowered along the vertical hole 3, the engagement groove 14 is formed. The upper engagement piece 4 and the lower engagement piece 5 are fitted into each other.

In addition, retaining pieces 15 and 16 are formed on the upper and lower parts of the insertion shaft 11 that protrude into the lock box 1, and the lower retaining piece 16 can be engaged with the inner surface of the lower edge of the vertically elongated hole 3. There is. Now, engage the lower retaining piece 16 with the inner surface of the lower edge of the vertically elongated hole 3 and attach the cylinder 1 to the lock box 1.
0, a gap is created between the upper retaining piece 15 and the inner surface of the side plate 2, and the slide frame 20
The wedge plate 21 becomes able to enter, and by allowing the wedge plate 21 to enter, the upper retaining piece 15 engages with the wedge plate 21.

A threaded rod 22 is rotatably supported by the slide frame 20, and the threaded rod 22 can be screwed into a screw hole 7 formed in the front plate 6 of the lock box 1.

Note that 8 indicates a front plate attached to the surface of the front plate 6 by means of screws or the like. Further, numeral 17 indicates a cam piece attached to the end face of the rotary plug of the cylinder 10.

Now, with the slide frame 20 moved laterally to the position where it abuts the inner surface of the lock box front plate 6, when the insertion shaft portion 11 of the cylinder 10 is inserted into the upper part of the vertically elongated hole 3, the upper engagement piece 4 is inserted. The pin cylinder 10 can be inserted into the guide groove 13 until the tip shoulder part contacts the surface of the side plate 2 (the fourth
(see figure).

Therefore, when the pin cylinder 10 is lowered along the longitudinal hole 3, the upper engagement piece 4 and the lower engagement piece 5 each engage with the engagement groove 14, and
The lower retaining piece 16 engages with the inner surface of the lower edge of the vertically elongated hole 3.

Next, when the threaded rod 22 shown in FIG. 4 is pushed in the axial direction, screwed into the screw hole 7, and then rotated,
The wedge plate 21 of the slide frame 20 enters between the insertion shaft 11 and the lock box top plate 9, and the lower edge of the wedge plate 21 enters between the upper retaining piece 15 and the inner surface of the side plate 2, causing the lock box 1 to be pinned. A cylinder 10 can be connected.

As shown in FIGS. 1 and 2, a through hole 18 is formed in the side surface of the insertion shaft 11, and the end of the pin 19 inserted into the through hole 18 is supported by the front plate 6. By preventing the cylinders 10 from coming off with the plate 8, the cylinders 10 can be connected more firmly.

As described above, in this invention, an insertion shaft portion with flat sides on both sides is formed at the tip of the pin cylinder, and the longitudinal engagement grooves provided in the flat portions on both sides of the insertion shaft portion are inserted into the longitudinal engagement grooves on both sides of the vertical hole. The upper retaining piece and the lower retaining piece formed on the edge are engaged, and the lower retaining piece provided at the bottom of the tip of the insertion shaft is engaged with the inner surface of the lower edge of the vertically elongated hole, and the upper retaining piece is engaged with the lower retaining piece formed on the edge. Since it is designed to engage the wedge plate that has entered between the insertion shaft and the top plate, the insertion shaft can be reliably prevented from falling out.
Moreover, by inserting the wedge plate between the insertion shaft and the top plate, the insertion shaft does not move along the vertical hole.
The pin cylinder can be firmly and reliably connected to the lock box, and the crime prevention effect can be improved.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the device according to this invention, FIG. 2 is a vertical side view of the same as above,
FIG. 3 is a plan view showing a part of the same, FIG. 4 is a partially cutaway front view showing the cylinder in the middle of installation, and FIG. 5 is an exploded perspective view showing the lock box and cylinder. 1...Lock box, 2...Side plate, 3...Vertical hole, 4...
...Upper engagement piece, 5...Lower engagement piece, 9...Top plate,
10... Pin cylinder, 11... Insertion shaft portion, 13
...Guide groove, 14...Engagement groove, 15...Upper retaining piece, 16...Lower retaining piece, 21...Wedge plate.

Claims (1)

[Scope of utility model registration request] A vertically long hole is formed in the side plate of the lock box, and an upper engaging piece and a lower engaging piece are provided on both sides of this vertically long hole, while the tip of the cylindrical pin cylinder is fitted into the upper part of the vertically long hole. An insertion shaft is formed which is brought into a connected state by lowering the insertion shaft from the mating position, and guide grooves are formed on both sides of the insertion shaft into which the upper engaging piece is fitted when mating into the vertically elongated hole. and an engagement groove into which the upper engagement piece and the lower engagement piece fit when slid downward along the vertically elongated hole, and the upper engagement piece and the lower engagement piece are inserted into the engagement groove. Connect the cylinder to the lockbox by fitting together, and provide retaining pieces at the top and bottom of the insertion shaft that protrude inside the lockbox, and between the upper retaining pieces and the inner surface of the lockbox side plate, the lockbox top plate and the outer periphery of the cylinder A cylinder attachment device for a lock with a wedge plate removably installed between the upper parts.