JPS6153497B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a handle attachment device for preventing rattling of a handle attached to a door lock.

This type of handle can be broadly divided into a grip ball and a lever handle, but in the lever handle in particular, a square shaft for operating the locking rod is inserted into a square hole in the hub of the lever handle. The square hole is made slightly larger than the square shaft so that the square shaft can be easily inserted into the square hole, and the square shaft and the lever handle are fixed with screws. However, for a long time,
During use, the screw that fixed the lever handle gradually loosened, causing the handle to come off the square shaft.

It is an object of the present invention to eliminate such drawbacks, and this problem is fully and satisfactorily solved by the following means.

The present invention forms an engaging part at the end of the neck of a handle that is rotatably provided inside and outside the door, and also forms engaging parts on both side wall surfaces of a hub that engages with this engaging part. A device for attaching a handle of a door lock, in which the handle is fixed to a square shaft with a screw after the engaging part of the handle is engaged with the engaging part of the handle, the gist of which is within the scope of the claims. It is as stated.

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a hub that engages with the upright pieces 3' and 3'' of the latch bolt drive plate 3 when the latch bolt 2 is retracted into the door lock A, and the outer circumferential surface 1a of this hub 1
The protrusions 8, 8' formed in are in contact with the upright pieces 3', 3''.

4 is a spring that biases the latch bolt 2;
Reference numeral 5 denotes a spring that biases the latch bolt drive plate 3, and one end of each spring 4, 5 is in contact with a fixing plate 6' fixed to the case 6 of the door lock A (see Fig. 3). ).

The hub 1 also has a square hole 11 through which a square shaft 10 is inserted into a square fitting hole 9 formed in the neck 7' of the handle 7. Further, a plurality of recessed holes 12 are formed in both side wall surfaces 1b and 1c of the hub 1, and a plurality of tapered protrusions 13 formed at the neck tip 7'' of the handle 7 are fitted into the recessed holes 12. .

Hole 1 for inserting countersunk screw 14 into neck 7' of handle 7
A screw hole 16 into which a countersunk screw 14 is screwed is formed at both ends of a square shaft 10 which is fitted into a fitting hole 9 formed in the neck portion 7''.
When the square shaft 10 is fitted into the fitting hole 9 of the handle 7, the hole 15 of the handle 7 will come out slightly outward from the position of the screw hole 16 of the square shaft 10 (see the right side of Figure 2), but this is due to the countersunk screw. When the handle 14 is screwed into the screw hole 16, the protrusion 13 of the handle 7 is press-fitted into the recessed hole 12 to further prevent looseness.

Since the present invention is configured as described above, when attaching the handle 7 to the door lock A, the square shaft 10 is inserted into the fitting hole 9 of one of the handles 7 attached to either the outdoor side or the indoor side in advance. After fitting, the countersunk screw 14 is inserted into the hole 15 of the neck 7', and the countersunk screw 14 is further screwed into the screw hole 16 of the square shaft 10 to fix the handle 7.

The square shaft 10 fixed to the handle 7 in this way is fitted into the square hole 11 of the hub 1 already provided in the door lock A (see Figure 3), and this square shaft 10 is inserted into the fitting hole of the other handle 7. 9, and then insert the countersunk screw 14 through the hole 15 of the neck 7' and screw it into the screw hole 16 of the square shaft 10 to fix the handle 7.

In the present invention, the concave hole 12 of the hub 1 and the protrusion 13 of the handle 7 may be formed to be opposite to each other, and although not shown, for example, the concave hole 12 formed in the hub 1 It is also possible to form a stepped square hole or slit, and also to form a stepped square shaft or a protruding piece on the handle 7 side so that the engaging portions fit together.

In the present invention, as described above, the engaging portion is formed on the hub and the handle, and after the engaging portion is fitted, the handle is fixed to the square shaft with a countersunk screw, so that the countersunk screw does not loosen accidentally. In addition, the handle does not rattle and cause discomfort when operated, and is extremely practical.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is an exploded perspective view, Fig. 2 is a sectional view of the main part, and Fig. 3 is a side sectional view with a part of the door lock A cut away. be. A... Door lock, 1... Hub, 7... Handle, 10
...Square shaft, 15...hole, 16...screw hole.

Claims (1)

[Scope of Claims] 1. After forming an engaging part on both side wall surfaces of the hub through which a square shaft formed with a screw hole is inserted, and fitting an engaging part formed at the neck end of the handle into this engaging part. A door lock handle mounting device characterized in that the handle is fixed to the square shaft by screwing a countersunk screw into the screw hole of the square shaft and the hole of the handle. 2. Claim 1, characterized in that when the screw hole of the square shaft and the hole of the handle are slightly misaligned, the engaging portion of the handle is press-fitted into the engaging portion of the hub when the countersunk screw is screwed. Door lock handle mounting device as described in Section 1.